CN221757916U - Roll-on packing machine - Google Patents

Abstract

The utility model discloses a rotating loading type packaging machine, comprising a frame and a bag-holding device, at least two bag-holding devices are arranged at positions corresponding to the frame, and a rotating bag-feeding device is also arranged on the frame, two rows of plastic bags are first sequentially loaded into one of the packaging bags held open by the bag-holding device, after the packaging bag is full, the two rows of plastic bags are loaded into the packaging bag held open by the other bag-holding device, when another packaging bag is loaded, the filled packaging bag can be randomly taken away and replaced, so that a longer time is gained for replacing the packaging bag, and the problem of not having enough time to replace the packaging bag during the packaging process is solved, so that the bag changing work is unhurried, and the utility model has a simple and compact structure and high efficiency.

Description

Roll-on packing machine

Technical Field

The utility model relates to the field of packaging machinery, in particular to a rotationally loaded packaging machine.

Background Art

Existing bag making machines are generally equipped with folding and bundling mechanisms. After producing dozens of bags, they will be automatically folded and bundled into long strips. In order to improve production efficiency, most bag making machines and bundling machines are double-line, that is, the bag making machine and the bundling machine are equipped with two workstations, and some bundling machines are also equipped with a discharge device at the back, which can discharge two rows of plastic bags like bricks, or discharge them to the left and right material collection points, that is, temporary storage positions. In order to facilitate storage, transportation and sales, plastic bags need to be loaded into packaging bags (usually nylon woven bags, also known as snakeskin bags) row by row to achieve packaging of plastic bags.

Application publication number CN113998182A discloses a leak-in type packaging machine, which includes a frame, a bag feeding device, a bag support device, a leak-in device, a compacting (pressing plate) device, and a lifting and lowering support device; authorization announcement number CN218594744U discloses a plastic bag filling device, which includes a bracket, a bag support frame (equivalent to a bag support device), a packaging bag bottom support mechanism (equivalent to a lifting and lowering support device), and a loading device. The common feature of the prior art in the way of transporting plastic bags to the packaging bag mouth position is that the mechanical clamp for conveying plastic bags has only one unloading point, that is, the mechanical clamp can only grab rows of plastic bags and then transport and load them into a bag support device. The existing problems are: the bag making machine works continuously, and the plastic bag strapping machine continuously delivers plastic bags from the conveyor belt. The time and cycle required to fill a bag are basically fixed. It takes about 2 minutes to output two rows of plastic bags. Each bag can generally be loaded with 10 rows (10 layers). Every 20 minutes, the left and right bags will be filled at the same time. After filling, the bags must be removed and replaced immediately. The two bags that have been filled with plastic bags must be removed within 2 minutes, because another row of plastic bags will be delivered in 2 minutes, and two empty bags must be replaced (one per minute on average). This speed is almost difficult to complete; and the employees responsible for packaging must wait there and dare not slack off. Once missed, the entire packaging process will be disrupted, and even the bag making and strapping work of packaging cannot be carried out normally. Moreover, one person can only operate one machine, which is inefficient, so manual packaging is still used in the market.

Summary of the invention

In order to solve the deficiencies of the prior art, the utility model proposes a rotation-loading packaging machine, which can first load two rows of plastic bags into one of the packaging bags in turn, and then load the two rows of plastic bags into another packaging bag after it is full. The problem of not having enough time to replace the packaging bags is solved by the rotation-loading method.

To achieve the above technical objectives, the technical solution of the utility model is: a shift-loading packaging machine includes a frame and a bag-holding device, characterized in that: at least two bag-holding devices are arranged at corresponding positions on one side or both sides of the frame, and a shift-bag delivery device is also provided on the frame, the shift-bag delivery device includes a longitudinal bag transfer mechanism and a transverse bag transfer mechanism, and also includes an upper and lower driving mechanism, a pressure plate, and a mechanical clamp, the upper and lower driving mechanism is used to drive the pressure plate to move up and down or drive the mechanical clamp to move up and down, the mechanical clamp includes a clamp and an opening and closing mechanism, and the clamp is connected to the opening and closing mechanism.

The alternating bag feeding device is provided with two material taking points and at least two material discharging points. The two material taking points correspond to the temporary storage positions of two rows of plastic bags respectively, and the at least two material discharging points correspond to the at least two bag supporting devices up and down.

The material taking point is the location where the plastic bags are clamped, or the temporary storage location of the plastic bags waiting to be packaged; the material unloading point is the release location of the mechanical clamp, which is the position of the packaging bag opened by the bag-opening device.

The two material taking points and at least two material unloading points are provided, which means that the mechanical clamp of the bag-feeding device can clamp both the left row of plastic bags and the right row of plastic bags. No matter whether it is the left row of plastic bags or the right row of plastic bags, it can be transported to the position corresponding to the upper and lower positions of the bag-supporting device on the left, or to the position corresponding to the upper and lower positions of the bag-supporting device on the right.

As a further improvement, a leak plate is provided at the position corresponding to the unloading point, and a leak plate cylinder is connected to the leak plate. The leak plate cooperates with the bag support device to reduce the drop when the plastic bags are loaded and improve the neatness of the plastic bags loaded.

The longitudinal bag transfer mechanism and the transverse bag transfer mechanism include two forms of movement, namely, front-to-back longitudinal movement and left-to-right transverse movement. The longitudinal bag transfer mechanism is used to move the plastic bag in the front-to-back longitudinal direction; the transverse bag transfer mechanism is used to move the plastic bag in the left-to-right direction.

The longitudinal bag moving mechanism and the transverse bag moving mechanism are like a plane coordinate system from the perspective of the moving trajectory of the plastic bag. No matter whether the moving trajectory of the plastic bag is straight or curved, as long as the plastic bag is moving from the material picking point to the bag supporting device, the coordinate values on the longitudinal and transverse axes change. As long as the longitudinal coordinate value changes, it indicates that longitudinal movement has occurred. As long as the transverse coordinate value changes, it indicates that transverse movement has occurred. The mechanism that drives the plastic bag to move should be understood as a longitudinal bag moving mechanism or a transverse bag moving mechanism.

The longitudinal bag moving mechanism and the transverse bag moving mechanism have many specific implementation modes. The longitudinal bag moving mechanism can be a bag supporting plate that moves forward and backward, or it can push the plastic bag backward during the forward and backward swing of the flip plate, or it can be the longitudinal movement of the push rod in the plastic bag discharge device, or it can be the longitudinal movement of the mechanical clamp; the transverse bag moving mechanism can be a belt drive mechanism or an electric slide, or it can be a bag supporting plate that moves laterally, or it can use a push plate to push the plastic bag laterally. There are many implementation modes to choose from.

As a preferred technical solution, the longitudinal bag transfer mechanism includes a belt transmission mechanism, a guide rail, a slider, and a crossbeam, and the transverse bag transfer mechanism is connected to the crossbeam of the longitudinal bag transfer mechanism. This design enables the crossbeam and the transverse motion mechanism connected to the crossbeam to move forward and backward in a balanced manner by pulling the two ends of the crossbeam with the synchronous belt of the belt transmission mechanism arranged on both sides of the frame, so that the crossbeam and the transverse motion mechanism connected to the crossbeam can move forward and backward in a stable manner, with high accuracy in delivery to the destination, simple structure, and convenient adjustment.

The belt transmission mechanism includes a motor, a transmission shaft, a synchronous wheel, a synchronous belt, etc. The belt transmission mechanism can also be replaced by a chain transmission mechanism, and the belt transmission mechanism can also be replaced by a cylinder or an electric slide, which are all equivalent technical features. The transverse transmission mechanism can also be composed of a motor, a synchronous wheel, and a synchronous belt.

The up-down driving mechanism may be provided with only one or more. Some up-down driving mechanisms are used to drive the mechanical clamp to move up and down, and some up-down driving mechanisms are used to drive the pressing plate to move up and down to press the plastic bag into the packaging bag. The up-down driving mechanism that drives the mechanical clamp to move up and down can be connected to the longitudinal bag moving mechanism or the transverse bag moving mechanism. The up-down driving mechanism that drives the pressing plate can be connected to the longitudinal bag moving mechanism or the transverse bag moving mechanism, or it can be completely connected to the frame. The movement form of the up-down driving mechanism can be linear motion or swinging motion. The up-down driving mechanism can be a cylinder, such as a guide rod cylinder, a double rod cylinder, or an electric slide or electric cylinder.

As a preferred technical solution, the mechanical clamp is connected to an upper and lower driving mechanism, and the upper and lower driving mechanism is connected to a longitudinal bag transfer mechanism or a transverse bag transfer mechanism.

The mechanical clamp is used to clamp and transfer plastic bags. One, two or more mechanical clamps can be set. The mechanical clamp can be directly connected to the longitudinal bag transfer mechanism or the transverse bag transfer mechanism, or can be connected to the upper and lower driving mechanisms, and then the upper and lower driving mechanisms are connected to the longitudinal bag transfer mechanism or the transverse bag transfer mechanism.

As a preferred technical solution, a bag-supporting rod is further provided under the clamping plate to prevent the plastic bags from sagging and scattering due to their own weight during the movement of the mechanical clamp, and can also further press the plastic bags loaded last time or this time into the packaging bag, which can play a role and effect equivalent to the pressing plate, and can replace the pressing plate. The pressing plate can be omitted in the specific implementation with the bag-supporting rod. The bag-supporting rod can be a rod-shaped body or a plate-shaped body.

The opening and closing mechanism is used to drive the clamping plate to move and clamp the plastic bag. The opening and closing mechanism can be a cylinder, such as a slide cylinder, a double-rod cylinder, a clamping plate cylinder, etc., or it can be an electric slide or an electric cylinder.

The pressing plate is connected to the upper and lower driving mechanisms and is used to press the plastic bag clamped by the mechanical clamp into the packaging bag. The bag stripping plate and its upper and lower driving mechanisms can be connected to the longitudinal bag moving mechanism or the transverse bag moving mechanism, or can be set on the frame.

As a preferred technical solution, the pressing plate is connected to the upper and lower driving mechanism, and the upper and lower driving mechanism is connected to the mechanical clamp, specifically, connected to the opening and closing mechanism of the mechanical clamp. This design can reduce the stroke of the upper and lower driving mechanism and improve work efficiency.

The bag-holding device is used to hold open a packaging bag (generally a nylon woven bag, also called a snakeskin bag) or to hold open the bag opening of the packaging bag to facilitate the loading of a plastic bag. The bag-holding device belongs to the prior art and has multiple implementations to choose from.

The at least two bag-supporting devices are arranged at corresponding positions on one side or both sides of the frame. This means that at least two bag-supporting devices are arranged, and three or four bag-supporting devices may be arranged, and they may be arranged at corresponding positions on the rear side of the frame, or at corresponding positions on either side or both sides of the frame.

As a preferred technical solution, at least two bag-supporting devices are provided, and the bag-supporting devices include two groups of support plates and a bag-supporting cylinder, and the bag-supporting cylinder is connected to the support plates. The support plates can be a rod-shaped body or a plate-shaped body, and each group of support plates can be composed of two or more support plates, or a rectangular plate-shaped body; the bag-supporting cylinder can be connected to one group of support plates, and the other group of support plates can be fixed on the frame, or the bag-supporting cylinder can be connected to both groups of support plates; the bag-supporting cylinder is used to drive the relative movement between the two groups of support plates, and the bag-supporting cylinder can be a guide rod cylinder, and the guide rod and the sliding sleeve of the guide rod cylinder have the functions of a guide rail and a slider, and the guide rail and the slider can be omitted when the guide rod cylinder is used as the bag-supporting cylinder.

As a further improvement, a foot switch is also connected to the bag-opening cylinder, and the foot switch independently controls the opening and releasing of each bag-opening cylinder by controlling the circuit or the air path reversing (mechanical valve). This design can randomly control the opening and releasing of one of the bag-opening devices by touching the foot, freeing both hands to hang the bag opening of the packaging bag on the supporting plate, so that both hands and feet can participate in the bag-opening work, and bag changing is convenient and timely.

As a preferred technical solution, a bag-blocking plate is also provided above the bag-supporting device, which is used to limit the position of the plastic bag in the front-to-back direction after the clamp is released, so that the front-to-back width of the plastic bag remains corresponding to the bag mouth of the stretched packaging bag, and can also play a guiding role in the process of the plastic bag being loaded into the packaging bag downward. The bag-blocking plate is a plate-like body or a rod-like body, which is arranged above the support plate, and can be formed into a group by two or more bag-blocking plates distributed at intervals. The gaps between the bag-blocking plates facilitate the passage of the clamp or bag-supporting rod of the mechanical clamp. Each group of bag-blocking plates can also be composed of a rectangular plate-like body, and a clearance notch is provided on the plate-like body. The bag-blocking plate can be fixedly connected to the support plate, or movably connected to the support plate through a cylinder.

The bag-blocking plate can also be lengthened in the upper and lower heights of the support plate so that the support plate is extended upward for a section. The lower part of the support plate is used to open the packaging bag. The section of the support plate extended upward has the function of limiting the front and rear width of the plastic bag, thus forming a bag-blocking plate. This is an integrated design of the support plate and the bag-blocking plate, and this design includes two technical features of the support plate and the bag-blocking plate.

As another embodiment of the bag support device, the bag support device is a bag support frame (also called a packaging bag support device), which is mainly composed of a packaging bag support arm and a bottom plate, and the four packaging bag support arms are distributed in a rectangular shape, and their lower ends are slidably mounted on the bottom plate. The bag support frame or packaging bag support device belongs to the prior art and will not be described in detail here.

As a preferred technical solution, a lifting and lowering support plate device is also provided at the position corresponding to the bag-supporting device, and the lifting and lowering support plate device includes a lifting mechanism and a support plate, and the support plate is connected to the lifting mechanism. It is used to support the bottom or both sides of the packaging bag to reduce the drop of the plastic bag when it is loaded, prevent the plastic bag from being in a mess due to a large drop when it is loaded, and improve the neatness of loading.

As a further improvement, the pallets include two left pallets and two right pallets, which are respectively slidably connected to the pallet seats, and are respectively connected to the pallet cylinders. In this design, the two bag-supporting devices can share a lifting mechanism, and the opening and closing of one group of pallets can be independently controlled, which is convenient for replacing packaging bags, and when replacing packaging bags, it will not affect the normal packaging work of another packaging bag.

The beneficial effect of the utility model is that the bag making machine and the strapping machine can output two rows of plastic bags approximately every 2 minutes. We have done experiments. If two bag-supporting devices are set correspondingly to the two rows of plastic bags, two mechanical clamps are used to simultaneously load the left row of plastic bags into the left packaging bags, and the right packaging bags into the right packaging bags, the left and right packaging bags are filled at the same time. This requires that the two full packaging bags must be immediately removed within 2 minutes, and then replaced with two empty packaging bags. The bag-changing time for each packaging bag is only 1 minute. This bag-changing speed is difficult to achieve, and the operator must always be there, not daring to relax. Once the bag-changing opportunity is missed, the program will be disrupted, and even the work of the bag-making machine will be affected. The utility model can first convey and load the two rows of plastic bags into one of the packaging bags, and then load the other packaging bag after the packaging bag is full. At this time, the full packaging bag can be randomly removed, and the empty packaging bag can be replaced on the bag-supporting device. Each packaging bag generally needs to be filled with ten layers, and it takes about 5 minutes to replace the packaging bag. And only one packaging bag needs to be taken out and replaced, which saves 5 times the time for bag changing, making the bag changing work unhurried. One operator can complete the bag changing work of two machines, thereby improving packaging efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic front view of the structural principle of the first embodiment;

FIG2 is a schematic top view of the structural principle of the first embodiment;

FIG3 is a left schematic diagram of the structural principle of the first embodiment;

4 and 5 are schematic diagrams on the left side showing the working principle and working steps of the first embodiment;

FIG6 is a schematic front view of the structural principle of the second embodiment;

FIG7 is a schematic top view of the structural principle of the second embodiment;

FIG8 is a schematic diagram of the right side of the structural principle of the second embodiment;

9, 10 and 11 are schematic diagrams of the working principle and working steps of the second embodiment;

FIG12 is a schematic top view of the structural principle of Embodiment 3;

FIG13 is a schematic diagram of the structural principle of the third embodiment on the left side;

14 is a schematic diagram of the structural principle of the push rod mechanism of Example 3;

FIG15 is a schematic diagram of the working principle of the third embodiment on the left;

16 is a schematic diagram of the left side of the structural principle of the longitudinal motion mechanism of the fourth embodiment;

FIG17 is a left side view of the structural principle of Embodiment 5;

FIG18 is a schematic top view of the structural principle of Embodiment 5;

19 and 20 are schematic top views of the working principle of the fifth embodiment.

In the figure: 1-frame; 10-gap; 11-gap; 12-square mouth; 2-longitudinal bag transfer mechanism; 20-crossbeam; 21-belt transmission mechanism; 210-synchronous belt; 211-motor; 212-drive shaft; 213-pulley; 22-guide rail; 23-mechanical swing arm; 231-swing column; 232-servo motor; 233-swing arm; 234-stepping motor; 24-slider; 25-push rod; 251-guide rod cylinder; 252-connecting plate; 26-push rod cylinder; 261-push rod cylinder Cylinder; 27-turn plate; 271-turn cylinder; 272-rocker; 28-bundling machine conveyor belt; 3-lateral bag transfer mechanism; 30-electric slide; 301-slide seat; 31-belt transmission mechanism; 311-synchronous belt; 312-pulley; 32-guide rail; 33-slider; 34-left bag tray; 35-right bag tray; 36-lateral cylinder; 37-guide rail; 38-slider; 39-stepping motor; 4-up and down drive mechanism; 41-guide rod cylinder; 42-guide rod; 43-guide rod seat; 44-swing arm cylinder Cylinder; 45-double-rod cylinder; 46-guide rod seat; 47-cylinder; 48-guide rod; 49-connecting plate; 5-mechanical clamp; 50-opening and closing mechanism; 501-cylinder; 502-guide rail; 503-slider; 504-plywood cylinder; 51-plywood; 52-bag supporting rod; 53-pressing plate; 6-bag supporting device; 60-supporting plate; 61-bag supporting cylinder; 611-foot switch; 62-guide rail; 63-slider; 64-connecting plate; 65-bag blocking plate; 66-leakage plate; 661-leakage plate cylinder; 662- Guide rail; 663-slider; 67-bag support arm; 68-bottom plate; 7-lifting pallet device; 71-pallet; 710-pallet seat; 711-left pallet; 712-right pallet; 713-pallet cylinder; 714-guide rail; 715-slider; 716-square pallet; 72-lifting mechanism; 721-chain; 722-sprocket; 723-reduction motor; 724-drive shaft; 725-lifting cylinder; 8-plastic bag; 81-left row of plastic bags; 82-right row of plastic bags; 9-packaging bag.

DETAILED DESCRIPTION

In order to fully disclose the utility model, the following five embodiments are used in conjunction with the accompanying drawings to specifically describe the technical solution of the utility model. In the description of the utility model, the top of Figure 2 (top view) is the front of the utility model, the up and down direction of Figure 2 is the front and back direction of the utility model, that is, the longitudinal direction, and the left and right sides of Figure 2 are the left and right directions, that is, the transverse direction; in Figure 2, the position of the left row of plastic bags 81 is a material collection point, that is, the left material collection point, and the position of the right row of plastic bags 82 is also a material collection point, that is, the right material collection point; there are two unloading points, which are the positions of the two bag support devices 6.

Embodiment 1

As shown in Figures 1 to 5, in the first embodiment, two bag-supporting devices 6 are provided, both of which are arranged at corresponding positions on the rear side (one side) of the frame 1. The longitudinal bag-moving mechanism 2 includes a belt transmission mechanism 21, a guide rail 22, a slider 24, and a crossbeam 20. The belt transmission mechanism 21 includes a transmission shaft 212, a pulley 213, a synchronous belt 210, and a motor 211 (which can also be a stepping motor or a servo motor); the transverse bag-moving mechanism 3 includes a belt transmission mechanism 31, a guide rail 32, and a slider 33. The belt transmission mechanism 31 includes a synchronous belt 311, a pulley 312, and a stepping motor 39; the transverse bag-moving mechanism 3 is connected to the crossbeam 20 of the longitudinal bag-moving mechanism 2; the mechanical clamp 5 is connected to the upper and lower driving mechanisms 4, and the upper and lower driving mechanisms 4 are connected to the transverse bag-moving mechanism 3. The upper and lower driving mechanisms of the first embodiment are used to drive the mechanical clamp up and down. Movement; each bag-supporting device 6 includes two front and rear groups of support plates 60 and a bag-supporting cylinder 61, and also includes a guide rail 62, a slider 63, and a connecting plate 64. A foot switch 611 is connected to the bag-supporting cylinder 61; two front and rear groups of bag-blocking plates 65 are also provided on the connecting plates 64 of the two bag-supporting devices 6 and the frame 1; the mechanical clamp 5 of Example 1 includes a clamping plate 51, and the opening and closing mechanism 50 includes a cylinder 501, a guide rail 502, and a slider 503. A bag-supporting rod 52 is also provided under the clamping plate 51; the lifting and lowering pallet device 7 includes a lifting mechanism 72 and two groups of pallets 71. The lifting mechanism 72 is a chain transmission mechanism, and the pallet 71 includes two left pallets 711 and two right pallets 712; in Example 1, because the bag-supporting rod 52 is provided, a pressing plate may not be provided, and the upper and lower driving mechanism for driving the pressing plate to move up and down may also be omitted.

As shown in Figures 1, 2 and 3, a transmission shaft 212 is rotatably installed at the front end of the frame 1, two pulleys 213 are installed on the transmission shaft 212, and a motor 211 is connected to one end of the transmission shaft 212. The motor 211 is a stepping motor or a servo motor. The body of the motor 211 is installed on the frame 1, and a half-axis is installed on both sides of the rear end of the frame 1. A driven pulley 213 is rotatably installed on each of the two half-axis. A synchronous belt 210 is installed on the front and rear pulleys 213 on both sides of the frame 1. The distance between the front and rear pulleys 213 on each side is greater than the stroke of the reciprocating movement of the beam 20. A guide rail 22 is installed on the left and right sides of the frame 1, and a slider 24 is slidably installed on the two guide rails 22. A crossbeam 20 is installed on the slider 24, and a point on the upper or lower layer of the two synchronous belts 210 is fixedly connected to one end of the crossbeam 20 (not shown in the drawings). A proximity switch (not shown in the drawings) is installed at the front and rear ends of one side of the frame 1. When the mechanical clamp 5 is at the material-retrieving point, the front proximity switch can detect that the mechanical clamp 5 is in place, and when the mechanical clamp 5 moves to the position of the unloading point, the rear proximity switch can detect it; two pulleys 312 are installed on the left and right sides of the crossbeam 20, and a synchronous belt 311 is installed on the left and right pulleys 312, and a proximity switch (not shown in the drawings) is installed on the left and right sides of the crossbeam 20; a guide rail 32 is installed in the left and right directions of the crossbeam 20, and a sliding plate 32 is installed on the guide rail 32. Two sliders 33 are installed dynamically, a connecting plate 49 is connected to the two sliders 33, a guide rod cylinder 41 is installed on the connecting plate 49, two guide rods 42 are slidably installed on the positions of the connecting plates 49 on the left and right sides of the guide rod cylinder 41, the lower ends of the two guide rods 42 and the cylinder rods of the guide rod cylinder 41 are installed on the guide rod seat 43, a guide rail 502 is installed on the guide rod seat 43 in the front and back directions, two sliders 503 are slidably installed on the guide rail 502, two cylinders 501 are cross-installed below the guide rail 502, and two cylinder rods are extended forward and backward after the two cylinders 501 are cross-installed, and the two cylinder rods are respectively connected to the two sliders 503 through connecting pieces, and two clamping plates 51 are respectively installed on the connecting pieces of the two sliders 503, and the four clamping plates 51 are installed below the front and back. Two bag holding rods 52 are installed horizontally at the ends, and the bag holding rod 52 is a rod-shaped body. The two front bag holding rods 52 and the two rear bag holding rods 52 are staggered and correspond to each other front and back; two square openings 12 are arranged on the left and right sides of the rear of the frame 1, and a guide rail 62 is installed on the left and right sides of each square opening 12, and a slider 63 is slidably installed on the four guide rails 62, and a connecting plate 64 is connected to the two sliders 63 on both sides of each square opening 12. Two support plates 60 are installed downwardly on the left and right sides of each connecting plate 64 near the rear side of the slider 63, and the two support plates 60 form a group of support plates. A bag supporting cylinder 61 is connected to the middle front side of the connecting plate 64, and the tail end of the bag supporting cylinder 61 is connected to the frame. The two bag supporting cylinders 61 are respectively connected with air pipes. It is connected to the electromagnetic valve of the bag-supporting cylinder 61, and then a wire is connected to the electromagnetic valve, and the other end of the wire is connected to a foot switch 611. The two foot switches 611 are respectively arranged at positions on the frame or on the ground that are convenient for foot operation. When the foot switch is stepped on, a corresponding bag-supporting cylinder 61 can be opened or released; two bag-blocking plates 65 are installed at intervals on the left and right sides between the two support plates 60 on the rear side of each connecting plate 64, and two support plates 60 are also installed on the rear side of the square opening 12 at positions of the frame 1 corresponding to the two support plates (a group of support plates) on the connecting plate 64. The two support plates 60 form a group, and the outer side distance between the left and right support plates 60 (i.e., each group of support plates) is greater than or equal to the length of the plastic bag 8. Two bag blocking plates 65 are also installed on the rear side, and two bag blocking plates 65 are also installed on the frame positions (rear positions of the square opening 12) corresponding to the front and rear of the two bag blocking plates 65 installed on the connecting plate 64. The interval gap formed between the left and right blocking plates 65 and between the two supporting plates 60 corresponds to the upper bag pressing rod 52; a guide rail 726 is installed on the two sides below the two square openings 12 of the frame 1, and a slider 725 is slidably installed on the two guide rails 726, a support plate seat 710 is installed on the two sliders 725, a guide rail 714 is installed on the support plate seat 710, four sliders are installed on the guide rail 714, and a connecting plate is installed on each of the four sliders. Every two sliders and the connecting plate are divided into a group, and the left and right sides of each group are connected. A left support plate 711 is connected to the two connecting plates on the sides respectively, and a right support plate 712 is installed on the two connecting plates on the right side of each group respectively, and a support cylinder 713 is connected to each left support plate 711 and each right support plate 712 respectively. The left support plate 711 and the right support plate 712 are a kind of cylinder (or a plate-shaped body), so that the distance between the left support plate 711 and the right support plate 712 after moving to the middle is smaller than the left and right lengths of the plastic bag 8, and the distance between the left support plate 711 and the right support plate 712 when they are separated to the sides is greater than the length of the plastic bag 8; a transmission shaft 724 is rotatably installed under both sides of the frame 1, and three sprocket wheels 722 are installed on the transmission shaft 724, and two sprocket wheels 722 are also installed above the frame corresponding to the two sprocket wheels 722 upward, A chain 721 is installed between the two groups of upper and lower sprockets 722 respectively, and the left and right chains 721 are connected to the two ends of the support plate seat 710. A reduction motor 723 is installed in front of the transmission shaft 724, and the reduction motor 723 is connected to the sprocket 722 installed on the left side of the transmission shaft 7724 by a chain; a clearance gap 10 is set at the position of each row of plastic bags 8 (i.e., the left row of plastic bags 81 and the right row of plastic bags 82) at the front of the frame 1, and each clearance gap 10 corresponds to the bag supporting rod 52 and the clamping plate 51 up and down respectively; through programming, the initial position of the motor 211, i.e., the origin position of the mechanical clamp 5, is set to the position corresponding to the left and right of the two material picking points (i.e., a proximity switch is set at this position), and the stroke of the mechanical clamp 5 is set to the distance to the unloading point.

The specific working process of the first embodiment is as follows: as shown in Figures 4 and 5, in the initial state, the left support plate 711 and the right support plate 712 are separated to the left and right sides. First, the foot switch 611 should be stepped on to open one of the bag-holding cylinders 61 to drive a group of support plates 60 to move backward, and then the opening position of the packaging bag 9 is opened with both hands and hung on the front and rear two groups of support plates, that is, hung on the four support plates 60, and pulled backward, and then the foot switch 611 is released, and the packaging bag 9 is stretched and tightened in the front and rear directions by the two groups of support plates 60. After the two bag-holding devices 6 are covered with the packaging bags 9, the reduction motor 723 rotates the drive chain 721 to move the support plate seat 710 upward to a position about the height of a plastic bag 8 away from the support plate 60 and stop, and then the four support plate cylinders 713 are all opened, and the left support plate 711 and the right support plate 712 of each group are moved closer to the middle, so that the left and right packaging bags 9 are both in the interval gap between the left support plate 711 and the right support plate 712. If the left row of plastic bags, i.e. the left row of plastic bags 81, has been loaded into the left packaging bag 9, then the motor 211 rotates to drive the synchronous belt 210 to pull the crossbeam 20 forward along the guide rail 22 to the position corresponding to the left and right sides of the right row of plastic bags 82, and then the stepper motor 39 turns on the drive pulley 312 to rotate the cylinder 41, the guide rod seat 43 and the mechanical clamp 5 to move rightward along the guide rail 32. When the mechanical clamp 5 moves to the position corresponding to the upper and lower sides of the right row of plastic bags 82, i.e. the position of the right material picking point, the proximity switch installed in front of the frame 1 detects that the mechanical clamp 5 is in place, thereby feeding back the switch signal to The control system stops the motor 211, and then the guide rod cylinder 41 opens to drive the mechanical clamp 5 to move downward until the bag holding rod 52 enters the clearance gap 10 and stops. Then the cylinder 501 opens to drive the front and rear sliders 503 and the four clamping plates 51 and the four bag holding rods 52 to move from the front and rear sides to the middle to clamp the right row of plastic bags 82. Then the cylinder 41 is released, driving the clamping plates 51 and the bag holding rods 52 to clamp and carry the right row of plastic bags 82 upward. At this time, the mechanical clamp 5 has clamped the right row of plastic bags 82 at the right material picking point, forming the state shown in Figure 4; then, the motor 2 11 rotates to drive the crossbeam 20, the mechanical clamp 5, and the right row of plastic bags 82 to move backward together (i.e., longitudinal movement). During the backward movement, the stepper motor 39 is also turned on and drives the mechanical clamp 5 and the right row of plastic bags 82 to move leftward to a position corresponding to the front and rear of the bag-supporting device 6 (i.e., lateral movement). The proximity switch installed on the right side of the crossbeam 20 can detect the arrival of the mechanical clamp 5 and stop the stepper motor 39. When the right row of plastic bags 82 are transported to the upper position corresponding to the bag-supporting device 6 on the left, i.e., the position of the left unloading point, the proximity switch installed at the rear end of the frame can detect the arrival of the mechanical clamp 5. 5, and the left and right pallets 711 and 712 are moved downwards by the guide rod 41. The left and right pallets 711 and 712 are moved downwards by the guide rod 41. The left and right pallets 711 and 712 are moved downwards by the guide rod 41. When the two left and right supporting plates descend at the same time, the bag supporting rod 52 above also applies pressure downwards. During the downward movement of the mechanical clamp 5, the bag supporting rod 52 presses the plastic bag loaded last time, i.e., the left row of plastic bags 81, into the packaging bag 9. The mechanical clamp 5 can also be lifted after releasing the plastic bag 8, and then the opening and closing mechanism drives the clamp plate 51 again to bring the front and rear bag supporting rods 52 together again, and then press down again, so that the plastic bag delivered this time can be pressed into the packaging bag. Therefore, after the bag supporting rod 52 is arranged on the clamp plate 51, it can replace the pressing plate 53. When the plastic bag is pressed in by the bag supporting rod 52, the two front and rear sides The bag-blocking plates 65 have the function of guiding and directing. When the rods of the guide rod cylinder 41 are all extended downward, the reduction motor 723 stops, the left support rod 711 and the right support rod 712 stop moving downward, and the right row of plastic bags 82 moves down to the original position of the left row of plastic bags 81. At this time, the right row of plastic bags 82 is between the front and rear groups of baffles 65. After that, the cylinder 501 opens the driving clamping plate 51 and the bag-supporting rod 52 to be drawn out to the front and rear sides. Because of the blocking effect of the front and rear groups of bag-blocking plates 65, the plastic bags will not be drawn out in disorder during the process of the bag-supporting rod 52 being drawn out. After that, the guide rod cylinder 41 is released, and the motor 211 returns to The mechanical clamp 5 is driven to return to the position of the left row of plastic bags 81, that is, the position of the left material taking point, and the left row of plastic bags 81 outputted by the strapping machine or the plastic bag discharging machine are fed and loaded, and this process is repeated until the packaging bags 9 on the left are full. After the packaging bags on the left are full, the left supporting plate 711 and the right supporting plate 712 on both sides of the left bag supporting device are respectively moved to the left and right sides and separated under the drive of the two cylinder supporting plates 713; then the left row of plastic bags 81 and the right row of plastic bags 82 are continuously loaded into the packaging bags 9 on the right. When loading the packaging bags 9 on the right, a step can be randomly stepped on. The foot switch 611 on the left is pressed to release the bag-holding cylinder 61 to loosen the packaging bag 9. After the full packaging bag 9 on the left is taken away, the foot switch 611 on the left is pressed again to put the bag opening of the next packaging bag on the front and rear sets of support plates 60 of the bag-holding device on the left. After the foot switch 611 is released, the bag-holding cylinder 61 is turned on to drive the support plates 60 to move and hold the packaging bag 9 open and tight. Then the left support plate 711 and the right support plate 712 on the left move toward the middle at the same time, clamping the packaging bag 9 between the left support plate 711 and the right support plate 712, and then waiting for the next cycle of loading, and so on.

Embodiment 2

As shown in Figures 6 to 11: The main difference between Example 2 and Example 1 is that: the lateral bag transfer mechanism 3 of Example 2 is composed of two groups of bag holding plates that can be moved horizontally left and right under the drive of the lateral movement cylinder 36, including a left bag holding plate 34 and a right bag holding plate 35, a guide rail 37, a slider 38, and a lateral movement cylinder 36; Example 2 is provided with two mechanical clamps 5, and the two mechanical clamps 5 are not connected to the upper and lower driving mechanisms 4, but are directly connected to the longitudinal bag transfer mechanism 2, that is, connected to the crossbeam 20 of the longitudinal bag transfer mechanism (2); four upper and lower driving mechanisms 4 are provided on the crossbeam 20 of the longitudinal bag transfer mechanism 2, and the upper and lower driving mechanisms 4 are used to drive the up and down movement of the pressure plate 53, and the upper and lower driving mechanisms 4 include a double-rod cylinder 45, at each A pressing plate 53 is connected to each double-rod cylinder 45, and the pressing plate 53 is uprightly installed on the cylinder rod seat of the double-rod cylinder 45, and the pressing plate 53 is located at corresponding positions on both sides of the opening and closing mechanism 50; the bag-holding device 6 is a packaging bag supporting device surrounded by four angle iron-shaped packaging bag supporting arms 67, and the lifting and lowering support plate device 7 includes a square support plate 716 and a lifting cylinder 725; the opening and closing mechanism 50 is a splint cylinder 504 (it can also be composed of two guide rod cylinders), the left material picking point of the second embodiment is on the left bag supporting plate 34, and the right material picking point is on the right bag supporting plate 35, the bag supporting rod and the bag blocking plate are omitted, and a leakage plate 66 is provided on the left and right sides above each bag-holding device 6 (or only one leakage plate can be provided, which is provided on the front or rear side of the bag-holding device 6).

As shown in FIG6 , two bag-supporting devices 6 are arranged on the left and right sides of the rear part of the frame 1. The bag-supporting device 6 is a bag-supporting device surrounded by four angle iron-shaped bag-supporting arms 67. A lifting plate device 7 is arranged in the bag-supporting device. The lifting plate device 7 is a bag-supporting mechanism, including a square plate 716 and a lifting cylinder 725. The bag-supporting device and the bag-supporting mechanism belong to the prior art, and reference may be made to the plastic bag filling machine disclosed in Publication No. CN116986069A or to a plastic bag filling device disclosed in Authorization Announcement No. CN218594744U; the bag-supporting device 6 on the left corresponds front to back to the left row of plastic bags 81, and the bag-supporting device 6 on the right corresponds front to back to the right row of plastic bags 82; as shown in FIG6 , FIG7 , and FIG8 : a slider 663 is respectively installed at the rear part of the frame 1 at a position corresponding to the upper front side of each bag-supporting device 6, i.e., a position corresponding to the unloading point, and a setting is provided. A leak plate 66 is installed on each of the leak plates 66, and a guide rail 662 is installed on each of the leak plates 66. The leak plates 66 are slidably installed on the slider 663 through the guide rail 662, and a leak plate cylinder 661 is connected to each of the leak plates 66; as shown in Figures 6, 7, 8, and 9: two clamping plate cylinders 504 are installed on the left and right sides of the crossbeam 20, and clamping plates 51 are installed at the front and rear ends of each clamping plate cylinder 504. The clamping plate cylinder 504 is a cylinder with a clamping function, which is an integrated design of the cylinder and the clamping plate. The distance between the two clamping plates 51 after clamping is the same as the front and rear ends of each row of plastic bags 8. To adapt to the predetermined length, a clamping cylinder 504 can also be formed by installing a clamping plate 51 on two guide rod cylinders or double-rod cylinders; a double-rod cylinder 45 is respectively installed at the position of the left and right sides of the cross beam 20 of the clamping plate cylinder 504, and a pressing plate 53 is respectively installed on the four double-rod cylinders 45; as shown in Figures 7, 8, 9, and 11: two cylinders 47 are installed on the left and right sides of the front position of the frame, and two guide rails 48 are slidably installed on the front and rear sides of each cylinder 47, and the upper end of the guide rail 48 and the cylinder rod of the guide rod cylinder 47 are installed on the guide rod seat 46, Two sliders 38 are respectively installed on the two guide rod seats 46, and two bag supporting plates are set, namely a left bag supporting plate 34 and a right bag supporting plate 35. Two guide rails 37 are respectively installed on the bottom surfaces of the two bag supporting plates. The left bag supporting plate 34 is slidably installed on the left guide rod seat 46 through the guide rails 37 and the sliders 38, and the right bag supporting plate 35 is installed on the right guide rod seat 46. In this way, two groups of bag supporting plates that can move up and down and left and right are formed, and one end of a transverse movement cylinder 36 is respectively connected to each bag supporting plate, and the other end of the transverse movement cylinder 36 is respectively connected to the guide rod seat 46.

The specific working process of the second embodiment is as follows: as shown in Figure 10, the left row of plastic bags 81 is on the left bag supporting plate 34 on the left, and the right row of plastic bags 82 is on the right bag supporting plate 35 on the right, that is, the left material taking point is on the left bag supporting plate 34, and the right material taking point is on the right bag supporting plate 35. At this time, the cylinder rods of the two cylinders 47 are retracted downward, the left bag supporting plate 34 and the right bag supporting plate 35 are both in a low position, and the plastic bag 8 is under the mechanical clamp 5. At this time, the two groups of four leak plates 66 are respectively extended to the middle of the upper part of the bag supporting device 6, covering the positions on both sides of the bag opening of the stretched packaging bag 9. First, the motor 211 rotates to drive the crossbeam 20 and the two mechanical clamps 5 to move forward to the positions corresponding to the upward positions of the left row of plastic bags 81 and the right row of plastic bags 82, respectively, forming the state shown in Figure 8; first, the cylinder 47 on the left opens to drive the left bag supporting plate 34 to move upward to put the plastic bags above it 81 is lifted up from bottom to top between the two clamping plates 51 of the left mechanical clamp 5, and then the two clamping plates 51 clamp the left row of plastic bags 81 under the drive of the clamping plate cylinder 54, and the right mechanical clamp 5 is in an idle state at this time; because there is no bag supporting rod under the clamping plate 51 of the second embodiment, and there is no baffle plate on the bag supporting device 6, the mechanical clamp generally does not need to be lifted up during the forward and backward movement, and only slides forward and backward on the frame. Under the drive of the longitudinal bag moving mechanism 2, the two clamping plates 51 of the left mechanical clamp 5 clamp the left row of plastic bags 81 and slide backward. Because the upper surface of the bag supporting plate is slightly higher than the upper surface of the leaking plate 66, the leaking plate 66 acts as a bridge, so the plastic bags can slide smoothly to the top of the leaking plate 66, that is, the position of the left unloading point, forming the state shown in Figure 10; after that, the leaking plate cylinders 661 are all opened at the same time, and the clamping plate cylinders 504 are in The two double-rod cylinders 45 on both sides (i.e., the upper and lower driving mechanisms 4) are also opened at the same time, at which time the square support plate 716 of the lifting support plate device 7 also begins to move downward, and the pressing plate 53 pushes downward at the same time, and the left row of plastic bags 81 leaks from the positions of the two leak plates 66 into the packaging bags 9 to form a layer. When the pressing plate 53 extends downward to the lower dead point, the lifting support plate device 7 (square support plate 716) stops moving downward; then, driven by the longitudinal bag moving mechanism 2, it returns to the upper position of the left bag supporting plate 34; thereafter, the cylinder 47 on the left side is released, and the left bag supporting plate 34 moves downward and resets to avoid the right bag supporting plate 35 moving to the left, and then, the cylinder 47 on the right side is opened to drive the right bag supporting plate 35 to rise, and then the transverse moving cylinder 36 on the right side is opened to drive the right bag supporting plate 35 and the guide rail 37 to move to the left along the slider 38, so that the right row of plastic bags 82 originally on the right bag supporting plate 35 on the right side moves to the left The left plastic bag 81 is moved to the position where the left plastic bag 81 was originally located, and the right plastic bag 82 enters the mechanical clamp 5 from the right side between the front and rear clamps 51 along with the right bag tray 35, forming a state as shown in Figure 11 (rear view); afterwards, the mechanical clamp 5 on the left clamps the right plastic bag 82 again and moves backward to the two leaking plates 66 on the left bag support device 6; then the leaking plate cylinder 661, the double-rod cylinder 45, and the lifting oil cylinder 725 of the lifting support plate device 7 are opened, and the two square support plates 716 move downward at the same time to the height of a plastic bag 8, and with the downward pressure of the pressing plate 53 and the descent of the support plate, the right plastic bag 82 is also loaded into the packaging bag 9, until the packaging bag 9 on the left is filled, and then the right plastic bag 82 and the left plastic bag 81 are continuously loaded into the packaging bag 9 on the right, and at this time, the mechanical clamp 5 on the right can be used to clamp the plastic bag. In this way, the technical purpose of loading in turns is achieved.

Embodiment 3, as shown in Figures 12, 13, 14, and 15: The main difference between Embodiment 3 and Embodiment 1 or Embodiment 2 is that: the longitudinal bag transfer mechanism 2 is a plastic bag discharge device, including a push rod 25, a push rod cylinder 26, a push rod cylinder 261, a guide rod cylinder 251, a connecting plate 252, a flip plate 27, a flip cylinder 271, and a rocker arm 272; the transverse bag transfer mechanism is an electric slide 30, which is connected to the frame 1; the mechanical clamp 5 is connected to the upper and lower drive mechanisms 4, and the upper and lower drive mechanisms 4 is arranged on the transverse bag transfer mechanism 3; an up-down driving mechanism 4 is also installed on each opening and closing mechanism 50, and the pressing plate 53 is installed on the cylinder rod seat of the double-rod cylinder 45 in a plane, so that the pressing plate 53 is located at the bottom side of the opening and closing mechanism 50; the two bag-supporting devices 6 can be any kind of bag-supporting devices, and the two bag-supporting devices 6 are respectively arranged at the corresponding positions of the rear end of the frame 1, that is, at the corresponding positions of the frame 1, that is, at the corresponding left and right sides of the rear end of the frame 1, and the material taking point of the mechanical clamp 5 is located between the two push rods 25. As an example, this embodiment only cites one row of plastic bags 8, and due to space limitations, another row of plastic bags is not mentioned and is not shown in the drawings.

Two notches 11 are provided at the front of the frame 1 at the placement position of each row of plastic bags 8, a rotating shaft is installed on the left and right sides below the notch 11, two flip plates 27 are installed on the rotating shaft, a rocker arm 272 is installed at one end of the rotating shaft, a flip cylinder 271 is connected to the rocker arm 27, the tail end of the flip cylinder 271 is installed on the frame 1, and a guide rail 22 is installed on both sides of the frame 1 behind the flip plate 27, and two front and rear connecting plates are installed horizontally on the two guide rails 22 through sliders. 252, a guide rod cylinder 251 is uprightly installed on each connecting plate 252, and two push rods 25 are installed on the cylinder rod seat of the guide rod cylinder 251, so that the two front push rods 25 correspond to the front flip plate 27 in a staggered manner. When the guide rod cylinder 251 is opened, the two push rods 25 can be driven to move up and down in the notch 11. A push plate cylinder 26 is connected to the front connecting plate 252, and a push rod cylinder 261 is connected to the rear connecting plate 252. Only one air pipe is passed through the push rod cylinder 261, and the air pipe is passed through the air inlet at the rear of the push rod cylinder 261, and the air outlet at the front is open to the outside; the conveyor belt 28 of the plastic bag strapping machine is extended to be able to convey the plastic bag 8 to the top of the flip plate 27 (as shown in Figure 13); an electric slide 30 is installed at the upper position of the rear end of the frame 1, a connecting plate 49 is installed on the slide seat 31 of the electric slide 30, a guide rod cylinder 41 is installed on the connecting plate 49, and the front and rear sides of the guide rod cylinder 41 are divided into A guide rod 42 is slidably installed, a guide rod seat 43 is installed on the lower ends of the two guide rods 42 and the cylinder rod of the guide rod cylinder 41, and a clamping plate cylinder 504 is installed on the guide rod seat 43; a double-rod cylinder 45 (a guide rod cylinder can also be used) is installed on the clamping plate cylinder 504 or the guide rod seat 43, and a pressing plate 53 is installed flat on the cylinder rod seat of the double-rod cylinder 45; a bag supporting device 6 is respectively installed on the left and right sides of the frame 1, and the bag supporting device 6 can be any method in the prior art.

The working process of the third embodiment is as follows: as shown in FIGS. 12, 13 and 15, when a bundle of plastic bags 8 tied by the strapping machine is transported to the position of the front flip plate 27 of the frame 1 by the conveying device 28 of the strapping machine, the flip cylinder 271 opens and pulls the rocker arm 272 to make the rotating shaft drive the two flip plates 27 to swing backward, flipping the plastic bags 8 thereon to the front of the front push rod 25, at which time the plastic bags 8 are in an inclined state; then, the guide rod cylinder 251 opens to drive the two front push rods 25 to retract downward from the notch 11, and then the push rod cylinder 26 opens. The guide rod cylinder 251 is driven to move forward along the guide rail 22 to the front of the flip plate 27 and the plastic bag 8, and then the guide rod cylinder 251 is opened to drive the two push rods 25 to extend upward from the notch 11. At this time, the two push rods 25 in front have gone around the front of the plastic bag 8, forming the state shown in Figure 15. After that, the push rod cylinder 26 is opened to drive the tilted plastic bag 8 that has just been flipped over to move backward. The backward push of the push rod 25 makes the tilted plastic bag 8 be straightened, and the multiple bundles of plastic bags 8 at the back are also pushed backward at the same time. The air inlet of the cylinder 261 is open to the outside world under the control of the electromagnetic valve, and the air outlet at the front is not connected to the air pipe and is also open to the outside world. The cylinder rod of the push rod cylinder 261 is in a free state, and the push rod will move backwards as the front push rod 25 pushes backwards. Because of the support of the rear push rod 25, the plastic bag 8 will not fall and remain upright until the plastic bag 8 is pushed backwards to the position corresponding to the left and right of the bag-supporting devices 6 on both sides, so that the technical purpose of moving the plastic bag longitudinally is achieved. This is a longitudinal movement mechanism 2; then the electric The slide 30 drives the upper and lower driving mechanisms 4 and the mechanical clamp 5 to move horizontally to the positions corresponding to the upper and lower positions of the plastic bags 8 and stops. Then the upper and lower driving mechanisms 4 drive the clamp cylinder 504 to move downward so that the clamp 51 is located on the front and back sides of a row of plastic bags 8. Then the clamp cylinder 504 opens to clamp the row of plastic bags 8. Then the electric slide 30 drives the clamp cylinder 504 to continue to move left to the position corresponding to the upper and lower positions of the bag holding device 6 and stops. A row of plastic bags 8 are loaded into the packaging bag 9 on the left until the packaging bag 9 on the left is full and then loaded into the packaging bag 9 on the right.

Embodiment 4

The main difference between the fourth embodiment and the first embodiment or the third embodiment is that: as shown in Figure 16 (left schematic diagram), the longitudinal movement mechanism (2) of the fourth embodiment is a push rod mechanism, including two groups of front and rear push rods 25, the push rods 25 are respectively connected to the cylinder rod seats of two guide rod cylinders 251, the two guide rod cylinders 251 are slidably installed on the guide rails 22 through sliders, the guide rails 22 are installed on both sides of the bottom of the frame 1, the push rod cylinder 26 is connected to the front push rod 25 and the guide rod cylinder 251, and a push rod cylinder 261 is connected between the front and rear guide rod cylinders 251; the embodiment should also need to set a pressure plate 53, which is not shown in the drawings due to space limitations, and can be implemented with reference to the second or third embodiment.

The working process of the fourth embodiment is as follows: as shown in Figure 16, first the push rod cylinder 26 is opened to drive the guide rod cylinder 261 and the push rod 25 behind to move backward, so that the distance between the front and rear push rods is greater than the front and rear width of the plastic bag 8, and then the two guide rod cylinders 251 are opened to drive the front and rear push rods 25 to extend upward from the notch 11, and the two push rods 25 are located in front and behind the plastic bag 8, and then the push rod cylinder 261 is opened to drive the two push rods 25 to move and clamp the plastic bag 8, and then the push rod cylinder 26 is opened to drive the two guide rod cylinders 251 and the push rods 25 and the plastic bag 8 clamped by them to move backward together, until the plastic bag 8 is pushed to the position corresponding to the left and right of the bag support device 6 and stops, and then the plastic bag 8 is clamped by the mechanical clamp 5, and then the two guide rod cylinders 92 are released, and the two push rods 25 are retracted downward into the notch 11; then the mechanical clamp 5 moves the plastic bag 8 to the top of the bag support device 6 under the drive of the lateral movement mechanism.

Embodiment 5

As shown in Figures 17, 18, 19 and 20: The main difference of Example 5 is that the longitudinal bag transfer mechanism (2) and the transverse bag transfer mechanism (3) are a mechanical swing arm 23. Since the mechanical swing arm 23 has both the longitudinal bag transfer function of the longitudinal bag transfer mechanism 2 and the transverse bag transfer function of the transverse bag transfer mechanism 3, the mechanical swing arm is marked as 23, which is a combination of the longitudinal bag transfer mechanism 2 and the transverse bag transfer mechanism 3; the bag supporting device 6 can be one of Examples 1 and 2, or any other method; the upper and lower driving mechanism 4 is a swing arm cylinder 44 and a swing arm 233. As shown in FIG17 , the mechanical swing arm 23 comprises a servo motor 232, a swing arm 233, a swing column 231, and a stepper motor 234. The servo motor 232 is installed at the front-to-back middle position between the plastic bag 8 and the bag-supporting device 6, and is located at the middle position between the left row of plastic bags 81 and the right row of plastic bags 82 in the left-right direction. The left bag-supporting device 6 corresponds to the left row of plastic bags 81, and the right bag-supporting device 6 corresponds to the right row of plastic bags 82. The swing column 231 is installed on the turntable of the servo motor 232. The swing arm 233 is hinged at the upper end of the swing column 231. The stepper motor 234 is installed at the other end of the swing arm 233. The clamping plate cylinder 504 is installed on the stepper motor 234. A swing arm cylinder 44 is connected between the swing column 231 and the swing arm 233. The swing arm cylinder 44 is a common telescopic cylinder, which is called a swing arm cylinder because it can drive the swing arm 233 to swing up and down. The other aspects of the fifth embodiment are basically the same as those of the first and second embodiments.

The working process of the fifth embodiment is as follows: as shown in FIGS. 18, 19 and 20, the servo motor 232 is turned on to drive the swing column 231 to make the swing arm 233 swing leftward to the position where the mechanical clamp corresponds to the downward position of the left plastic bag 81, that is, it stops when it reaches the left material taking point. After that, the stepper motor 234 is also turned on to rotate a certain angle to drive the mechanical clamp to swing so that the two clamps 51 are parallel to the left row of plastic bags 81, and then the swing arm cylinder 44 is turned on to drive the swing arm 32 and the mechanical clamp to swing downward, so that the plastic bag 81 is between the two clamps 51 and stops. After that, the clamp cylinder 504 is turned on to drive the two clamps 51 to move downward. The clamping plate 51 clamps the left plastic bag 81, and then the swing arm cylinder 44 drives the swing arm 32 to lift the mechanical clamp and the left plastic bag 81 clamped by it, forming a state as shown in FIG. 18; then the servo motor 232 rotates again to drive the swing arm 231 to make the mechanical clamp clamp the left plastic bag 81 and swing to the left to a position corresponding to the upper and lower positions of the left bag-holding device 6, that is, the position of the left unloading point, and then the left row of plastic bags 81 are loaded into the left packaging bag held open by the left bag-holding device 6 (the loading process is basically the same as that of the first embodiment or the second embodiment), forming the state as shown in FIG. 9; after that, the servo motor 232 is turned on again to drive the swing arm 231 and the mechanical clamp 5 to swing backward and rightward to the position corresponding to the upper and lower positions of the right row of plastic bags 82, that is, the right material picking point, and then the stepper motor 234 drives the clamping plate cylinder 504 to swing a certain angle again, so that the two clamping plates 51 are parallel to the right row of plastic bags 82, and then the swing arm cylinder 44 is turned on again to drive the swing arm 233 and the mechanical clamp 5 to move downward to clamp the right row of plastic bags 82, and then the swing arm cylinder 44 is turned on again to drive the mechanical clamp and the right row of plastic bags 82 it clamps to lift up, forming the state shown in FIG. 20; then the servo motor 232 drives the swing column 231 again to make the swing arm 233, the mechanical clamp 5, and the right row of plastic bags 82 swing to the position corresponding to the upper and lower positions of the bag-supporting device 6 on the left, that is, the right unloading point, and once again forms the state shown in Figure 19, and then the swing arm cylinder 44 drives the swing arm 233 and the mechanical clamp again to load the right row of plastic bags 82 into the packaging bags on the left (the working steps of the bag stripping plate 53 are omitted) until the packaging bags on the left are full. After the packaging bags on the left are full, the left row of plastic bags and the right row of plastic bags 82 are loaded into the packaging bags on the right.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

The above-described implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (11)

1. A packaging machine for alternate loading, comprising a frame (1) and a bag-holding device (6), characterized in that at least two bag-holding devices (6) are arranged at corresponding positions on one side or both sides of the frame (1); a bag-feeding device for alternate loading is also arranged on the frame (1); the bag-feeding device for alternate loading comprises a longitudinal bag-moving mechanism (2) and a transverse bag-moving mechanism (3); and also comprises an upper and lower driving mechanism (4), a pressing plate (53), and a mechanical clamp (5); the upper and lower driving mechanism (4) is used to drive the pressing plate (53) to move up and down or to drive the mechanical clamp (5) to move up and down; the mechanical clamp (5) comprises a clamping plate (51) and an opening and closing mechanism (50); the clamping plate (51) is connected to the opening and closing mechanism (50). 2. The alternating loading packaging machine according to claim 1 is characterized in that: the alternating bag feeding device is provided with two material picking points and at least two material unloading points, the two material picking points respectively correspond to the temporary storage positions of two rows of plastic bags (8), and the at least two material unloading points correspond to the at least two bag supporting devices (6) up and down. 3. The rotation-loading packaging machine according to claim 2 is characterized in that a leak plate (66) is also provided at the position corresponding to the unloading point, and a leak plate cylinder (661) is connected to the leak plate (66). 4. The rotation-loading packaging machine according to claim 1 is characterized in that the longitudinal bag transfer mechanism (2) includes a belt transmission mechanism (21), a guide rail (22), a slider (24), and a crossbeam (20), and the transverse bag transfer mechanism (3) is connected to the crossbeam (20) of the longitudinal bag transfer mechanism (2). 5. The rotating loading packaging machine according to claim 1, characterized in that a bag holding rod (52) is also provided at the lower end of the clamping plate (51). 6. The rotating loading packaging machine according to claim 1, characterized in that a bag blocking plate (65) is also provided on the upper position of the bag supporting device (6). 7. The shift-loading packaging machine according to claim 1 is characterized in that the bag-holding device (6) comprises a bag-holding cylinder (61) and two sets of holding plates (60), the bag-holding cylinder (61) is connected to the holding plates (60), and the bag-holding cylinder (61) is also connected to a foot switch (611). 8. The rotation-loading packaging machine according to claim 1 is characterized in that the mechanical clamp (5) is connected to the upper and lower driving mechanisms (4), and the upper and lower driving mechanisms (4) are connected to the longitudinal bag transfer mechanism (2) or the transverse bag transfer mechanism (3). 9. The rotation-loading packaging machine according to claim 1 is characterized in that a lifting and lowering plate device (7) is also provided on the frame (1), and the lifting and lowering plate device (7) includes a lifting mechanism (72) and a plate (71), and the plate (71) is connected to the lifting mechanism (72). 10. The rotation-loading packaging machine according to claim 9 is characterized in that: the pallet (71) includes two left pallets (711) and two right pallets (712), the two left pallets (711) and the two right pallets (712) are respectively slidably connected to the pallet seats (710), and the two left pallets (711) and the two right pallets (712) are respectively connected to pallet cylinders (713). 11. The rotating loading packaging machine according to claim 1 is characterized in that the pressing plate (53) is connected to the upper and lower driving mechanism (4), and the upper and lower driving mechanism (4) is connected to the mechanical clamp (5).