CN216730490U

CN216730490U - Automatic nozzle replacing device

Info

Publication number: CN216730490U
Application number: CN202122561589.0U
Authority: CN
Inventors: 闫方波; 翟文元; 陈鹏
Original assignee: Jinan Bodor Laser Co Ltd
Current assignee: Jinan Bodor Laser Co Ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-06-14
Anticipated expiration: 2031-10-22

Abstract

The utility model relates to an automatic nozzle replacing device. The technical scheme includes that the automatic nozzle replacing device comprises a driving motor and a certain number of nozzle replacing assemblies, the driving motor drives the nozzle replacing assemblies to rotate through a belt transmission system, a one-way overload protection device is arranged in the belt transmission system, and the driving motor can rotate forwards and backwards. The utility model has the advantages that the rotation resistance is increased sharply after the nozzle is installed in place, the one-way overload protection device slips, the automatic nozzle replacement component stops rotating at the moment, and meanwhile, when the motor drives the nozzle replacement component to rotate reversely, the one-way overload protection device keeps a stable locking state to transmit the maximum torque, thereby ensuring the smooth detachment of the nozzle; the device can simultaneously complete the dismounting and mounting of the nozzle, ensures the mounting in place for the set torque value of the maximum torque during the mounting, does not loosen or tighten, and ensures the use effect of the laser head.

Description

Automatic nozzle replacing device

Technical Field

The utility model relates to the field of laser processing equipment, in particular to an automatic nozzle replacing device.

Background

In laser processing equipment, a nozzle used for executing a cutting process on a laser head is damaged due to corrosion, chipping, plate protrusion deformation, contact abrasion or collision between a raised edge and the nozzle after plate cutting, and therefore the nozzle of the laser head needs to be replaced regularly; meanwhile, due to different processing parameters, the nozzle needs to be replaced sometimes. Because the nozzle is closest to the processing position, the self temperature is very high, the manual replacement needs to wait for the complete cooling of the nozzle, and the time is consumed, the process of replacing the nozzle is gradually completed by adopting machine equipment.

However, in the existing nozzle replacing device, a servo motor is adopted for driving, a planetary reducer and a gear are used for transmission, and the nozzle tightening degree is controlled through current feedback or voltage feedback. When the nozzle replacing device in the form is adopted, if the current or voltage value of a control system has deviation or the nozzle is installed and inclined due to the deviation between the nozzle and a laser head, the situation that the current or voltage value is set when the nozzle is not installed in place is easily caused to be replaced, and the problem that the nozzle is installed too tightly or loosens is further caused.

Disclosure of Invention

The utility model provides an automatic nozzle replacing device, aiming at the problem that the existing nozzle replacing device is easy to be mounted too tightly or loose.

In order to solve the problems, the technical scheme adopted by the utility model is that the automatic nozzle replacing device comprises a driving motor and a certain number of nozzle replacing assemblies, wherein the driving motor drives each nozzle replacing assembly to rotate through a belt transmission system, a one-way overload protection device is arranged in the belt transmission system, and the driving motor can rotate forwards and backwards. When the nozzle is installed, the driving motor drives the nozzle replacing component to continuously rotate, the rotating resistance is increased sharply after the nozzle is installed in place, the one-way overload protection device slips, the nozzle automatic replacing component stops rotating, and meanwhile, due to the one-way overload protection, when the motor drives the nozzle replacing component to reversely rotate, the one-way overload protection device keeps a stable locking state to transmit maximum torque, so that the smooth dismounting of the nozzle is ensured; the device can simultaneously complete the dismounting and mounting of the nozzle, ensures the mounting in place for the set torque value of the maximum torque during the mounting, does not loosen or tighten, and ensures the use effect of the laser head.

Preferably, belt drive system includes one-level drive belt and secondary drive belt, be equipped with the one-level action wheel on driving motor's the output shaft, the one-level action wheel passes through one-level drive belt drive one-level and rotates from the driving wheel, the one-level is followed the driving wheel and is passed through one-way overload protection device drive secondary drive wheel and is rotated, the secondary drive wheel passes through secondary drive belt drive secondary and rotates from the driving wheel, the secondary is followed the driving wheel and is equipped with a plurality ofly, each nozzle replacement subassembly is connected with the secondary driven wheel respectively, the secondary drives nozzle replacement subassembly rotation from the driving wheel. And the two-stage conveyor belt is convenient for arranging an overload protection device between the two conveyor belts.

Preferably, the unidirectional overload protection device comprises a fixed shaft and a driving fluted disc and a driven fluted disc which are matched with each other, wherein a first-stage driven wheel is fixedly installed at one end of the fixed shaft, the driven fluted disc is coaxially and fixedly connected with a second-stage driving wheel, the second-stage driving wheel is arranged on one surface of the driven fluted disc, which is opposite to the driving fluted disc, the driven fluted disc and the second-stage driving wheel are integrally sleeved in the middle of the fixed shaft, and the driving fluted disc and the fixed shaft are circumferentially fixed relatively and are axially in sliding fit; one of the joint surfaces of the driving fluted disc and the driven fluted disc is provided with a ratchet, the other joint surface of the driving fluted disc and the driven fluted disc is provided with a ratchet groove, the ratchet is meshed with the ratchet groove, the fixed shaft is also provided with a pre-tightening assembly, and the pre-tightening assembly can enable the driving fluted disc to tightly press the driven fluted disc with certain pressure.

Preferably, one end of the fixed shaft, which is far away from the first-stage driven wheel, is provided with a threaded portion, the threaded portion is provided with an adjusting nut through threads, one side of the driving fluted disc, which faces away from the driven fluted disc, is provided with a spring, the spring is sleeved on the fixed shaft, one end of the spring is abutted to the driving fluted disc, and the other end of the spring is abutted to the adjusting nut. The adjusting nut is screwed, and the pressing force is adjusted through the compression spring, so that the structure is simple and effective, and the operation is easy.

Preferably, the device further comprises a certain number of tension pulleys, the secondary transmission belt between two adjacent secondary driven wheels bypasses the tension pulleys, the pressure direction of the secondary transmission belt on the secondary driven wheels is opposite to the pressure direction of the secondary transmission belt on the tension pulleys or forms an obtuse angle, and the rotation direction of the secondary driven wheels is opposite to the rotation direction of the tension pulleys. The tension is provided, the wrap angle of the secondary driven wheel is increased, the transmission friction force is improved, the pulley is prevented from slipping, and the transmission is accurate and stable.

Preferably, the drive motor is provided with a speed reducer. The output torque of the drive motor is increased.

Preferably, still include the box, be equipped with the bed plate in the box, driving motor and second grade drive belt are located the below at the bed plate, and driving motor's output shaft and one-way overload protection device pass the bed plate, and the subassembly is changed to one-level drive belt and nozzle is located the top of bed plate, and the position that the top surface of box corresponds nozzle and changes the subassembly is equipped with the window, and the nozzle is changed the subassembly and is located the window. The transmission structure adopts a double-layer design, so that the whole volume of the equipment is reduced, and the installation and the use are convenient.

Preferably, a flip cover is arranged above the window, the size of the flip cover is matched with that of the window, and when the flip cover is closed, the window is completely covered. And impurities such as slag, dust and the like are prevented from falling into the nozzle replacing component.

Preferably, install flip driving motor and flip axle on the bed plate, be equipped with the driving gear on flip driving motor's the output shaft, the epaxial driven gear that is equipped with of flip, driving gear and driven gear meshing, flip's both sides are provided with the rotor arm respectively, the tip and the flip axle fixed connection of rotor arm, flip driving motor action and then make flip open or closed.

Preferably, the rotating arms are respectively positioned at two sides of the box body, at least one side of the two sides of the box body is provided with an inductive switch, the inductive switch is used for detecting the position of the rotating arms, and the inductive switch is in signal connection with the flip cover driving motor. Realize automatic opening and shutting, can cooperate production line overall control system, realize automatic the change.

The utility model has the advantages that two stages of belt transmission are adopted, the unidirectional overload protection device is arranged between the two stages of belt transmission, the nozzle can be installed in place through setting torque during installation, and the nozzle cannot be loosened or tightened too much, so that the use effect of the laser head is ensured; the nozzle can be disassembled with the maximum torque when being disassembled, so that smooth disassembly is ensured; the transmission structure is reasonable in arrangement, accurate and stable in transmission, small in overall size and convenient to install and use; the automatic slag cutting device is provided with the box body and the turnover cover capable of automatically controlling opening and closing, so that the device is fully protected, and the influence of dust and cutting slag is avoided.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

Fig. 1 is a schematic view of the internal structure of the embodiment of the present invention.

Fig. 2 is a schematic view of the bottom surface of the base plate in the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a unidirectional overload protection apparatus according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of the present invention.

FIG. 5 is a schematic structural view of a driven sprocket according to an embodiment of the present invention.

In the figure: 1. the automatic transmission device comprises a driving motor, 2, a speed reducer, 3, a base plate, 4, a one-way overload protection device, 41, a driving fluted disc, 411, ratchets, 42, a driven fluted disc, 421, an installation table, 422, a key groove, 43, a fixed shaft, 44, a spring, 45, an adjusting nut, 46, a compression nut, 5, a nozzle replacement component, 6, a primary transmission belt, 7, a secondary transmission belt, 8, a primary driving wheel, 9, a primary driven wheel, 10, a secondary driving wheel, 11, a secondary driven wheel, 12, a tension wheel, 13, a box body, 14, a driven gear, 15, a window, 16, a flip cover, 17, a rotating arm, 18, a flip cover shaft, 19, a flip cover driving motor, 20, an inductive switch, 21, a driving gear, 22, a laser head, 23, a nozzle and 24, and an installation plate.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present embodiment, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

As shown in fig. 1-4, an automatic nozzle replacing device comprises a box body 13, a base plate 3 is arranged in the box body 13, a certain number of nozzle replacing assemblies 5 are arranged on the base plate 3, a driving motor 1 and a speed reducer 2 are arranged at the bottom of the base plate 3, the driving motor 1 is used for inputting torque of the speed reducer 2, an output shaft of the speed reducer 2 penetrates through the base plate 3 and is positioned on the base plate 3, a primary driving wheel 8 is arranged on the base plate 3, a unidirectional overload protection device 4 is further arranged on the base plate 3, the unidirectional overload protection device 4 comprises a mounting plate 24 and a fixed shaft 43, the mounting plate 24 is arranged on the base plate 3, the fixed shaft 43 penetrates through the mounting plate 24 and the base plate 3, a primary driven wheel 9 is fixedly arranged at the upper end of the fixed shaft 43, a primary driving belt 6 is arranged between the primary driving wheel 8 and the primary driven wheel 9, the primary driving wheel 8 drives the primary driven wheel 9 and the fixed shaft 43 to rotate through the primary driving belt 6, the middle of the fixed shaft 43 is provided with a driving fluted disc 41 and a driven fluted disc 42 which are mutually matched, one side of the driven fluted disc 42, which is back to the driving fluted disc 41, is coaxially and fixedly provided with a secondary driving wheel 10, one side of the driven fluted disc 42, which is back to the driving fluted disc 41, is provided with an installation table 421, the side surface of the installation table 421 is provided with a key groove 422, the secondary driving wheel 10 is provided with a matched key groove, the driven fluted disc 42 and the secondary driving wheel 10 are in key connection transmission, the whole body formed by the driven fluted disc 42 and the secondary driving wheel 10 is sleeved on the fixed shaft 43 through a shaft sleeve, the driving fluted disc 41 and the fixed shaft 43 are circumferentially fixed and are in axial sliding fit, namely, the driving fluted disc 41 can slide up and down along the fixed shaft 43 and cannot rotate relatively, and the driving fluted disc 41 synchronously rotates along with the fixed shaft 43;

one side of the driving fluted disc 41, which is in contact with the driven fluted disc 42, is provided with a ratchet 411, one side of the driven fluted disc 42, which is in contact with the driving fluted disc 41, is provided with a ratchet groove, the ratchet 411 and the ratchet groove are mutually meshed, one end of the fixed shaft, which is far away from the first-stage driven wheel, is provided with a threaded part, an adjusting nut 45 is installed on the threaded part through threads, one side of the driving fluted disc 41, which is back to the driven fluted disc 42, is provided with a spring 44, the spring 44 is sleeved on a fixed shaft 43, one end of the spring 44 is abutted against the driving fluted disc 41, the other end of the spring 44 is abutted against the adjusting nut 45, the compression amount of the spring 44 is set through the adjusting nut 45, and further the maximum torque of slipping between the two fluted discs is set;

the working principle of the unidirectional overload protection device is as follows: when the primary driven wheel drives the fixed axial ratchet to rotate in the locking direction, the driving fluted disc 41 and the driven fluted disc 42 are locked, the torque is transmitted to the driven fluted disc 42, and the driven fluted disc 42 drives the secondary driving wheel to rotate and output the torque; when the first-stage driven wheel rotates in the opposite direction and the load on the second-stage driving wheel exceeds the set torque, the spring is compressed, the driving toothed disc descends, the ratchet teeth are separated from the ratchet teeth grooves, namely, the power transmission path from the driving toothed disc to the driven toothed disc is interrupted, the driven toothed disc 42 and the second-stage driving wheel stop rotating, namely, the set torque can be transmitted in the steering process, and the overload protection effect can be achieved when the set torque is exceeded. And a compression nut 46 is further arranged on one side of the adjusting nut 45, which is back to the spring 44, and the adjusting nut 45 is tightly attached to the compression nut 46 to ensure that the adjusting nut 45 cannot be loosened.

The secondary driving wheel 10 and the two fluted discs are positioned on the bottom surface of the base plate 3, a certain number of secondary driven wheels 11 and tensioning wheels 12 are also arranged on the bottom surface of the base plate 3, the secondary driving wheel 10 drives each secondary driven wheel 11 and the tensioning wheel 12 to rotate through a secondary transmission belt 7, each secondary driven wheel 11 drives one nozzle replacing component 5 to rotate, and a connecting shaft between each secondary driven wheel 11 and each nozzle replacing component 5 penetrates through the base plate 3; as shown in fig. 2, the secondary transmission belt 7 between two adjacent secondary driven wheels 11 bypasses the tension pulley 12, the pressure direction of the secondary transmission belt 7 on the secondary driven wheels 11 is opposite to the pressure direction of the secondary transmission belt 7 on the tension pulley 12, and the rotation direction of the secondary driven wheels 11 is opposite to the rotation direction of the tension pulley 12, so that the wrap angle of the secondary transmission belt 7 on the secondary driven wheels 11 can be increased, and the slip is avoided.

The top surface of the box body 13 is provided with a window 15 corresponding to the position of the nozzle replacing component 5, the nozzle replacing component 5 is positioned in the window 15, a flip 16 is arranged above the window 15, the size of the flip 16 is matched with that of the window 15, and when the flip 16 is closed, the window 15 is completely covered.

The base plate 3 is also provided with a flip driving motor 19 and a flip shaft 18, an output shaft of the flip driving motor 19 is provided with a driving gear 21, the flip shaft 18 is provided with a driven gear 14, the driving gear 21 is meshed with the driven gear 14, the flip driving motor 19 can drive the flip shaft 18 to rotate, two sides of the flip 16 are respectively provided with a rotating arm 17, the end part of the rotating arm is fixedly connected with the flip shaft 18, and the flip driving motor 19 acts to open or close the flip 16. The two rotating arms 17 are respectively located at two sides of the box body 13, the two sides of the box body 13 are provided with inductive switches 20, the inductive switches 20 are used for detecting the positions of the rotating arms 17, the inductive switches 20 are in signal connection with the flip cover driving motor 19, and when the inductive switches 20 detect that the rotating arms 17 reach the set positions, the flip cover driving motor 19 stops rotating.

In the embodiment, the driving motor 1 adopts a stepping motor, so that the requirements of the system program of the electric control and laser cutting machine are reduced, the problem of incompatibility of various control systems is solved, the control program is simpler and easier to operate, meanwhile, an integrated speed reducing motor can be adopted, namely, a speed reducer is integrated on the motor, and the output shaft of the motor is directly connected with a primary driving wheel; the cross section of the ratchet 411 is in a right trapezoid shape, and when the driving fluted disc rotates towards the direction of a right-angle side, the driving fluted disc 41 and the driven fluted disc 42 are locked to transfer the maximum torque; when the driving fluted disc rotates towards the direction of the inclined edge, the inclined surfaces of the ratchets and the ratchet grooves are pressed and staggered when the resistance torque of the driven fluted disc exceeds the set torque, so that the driving fluted disc is disengaged from the driven fluted disc, and the set torque is transmitted in the direction. In other embodiments, the cross section of the ratchet can also adopt other shapes such as a right triangle and the like, and the use requirement is only required to be met.

The working process of the utility model is, as shown in fig. 4, when the nozzle needs to be replaced, the flip cover driving motor 19 drives the flip cover to open, at least one of the nozzle replacing components 5 in the device is not provided with a nozzle, the device is in an idle state, the laser head 22 needing to replace the nozzle moves to the upper part of the device through the shaft-driven system, then the laser head 22 descends, the original nozzle 23 of the laser head 22 is clamped into the nozzle replacing component 5 in the idle state, then the motor 1 is driven to rotate in a steering way locked by the unidirectional overload protection device 4, at the moment, the nozzle replacing component 5 outputs the maximum torque, and the nozzle 23 is detached; then the laser head 22 moves to the upper part of another nozzle replacing component 5 with a new nozzle and descends, the driving motor 1 rotates reversely, the new nozzle is rotatably installed on the laser head 22, after the new nozzle is installed in place, the rotation resistance is increased sharply, the set torque of the one-way overload protection device 4 is reached, at the moment, the spring 44 is compressed, the driving fluted disc 41 descends and is disengaged from the driven fluted disc 42, the driven fluted disc 42 and the secondary driving wheel 10 stop rotating, the nozzle replacing component 5 stops rotating, and over-tight installation is avoided; at the moment, the replacement of the nozzle of the laser head is finished, and the flip cover is closed after the replacement is finished.

According to the technical scheme, the laser head has the beneficial effects that two stages of belt transmission are adopted, the unidirectional overload protection device is arranged between the two stages of belt transmission, the nozzle can be installed in place through setting torque during installation, and the nozzle cannot be loosened or tightened too much, so that the using effect of the laser head is ensured; the nozzle can be disassembled with the maximum torque when being disassembled, so that smooth disassembly is ensured; the transmission structure is reasonable in arrangement, accurate and stable in transmission, small in overall size and convenient to install and use; the automatic slag cutting device is provided with the box body and the turnover cover capable of automatically controlling opening and closing, so that the device is fully protected, and the influence of dust and cutting slag is avoided.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides an automatic device of changing of nozzle, changes subassembly (5) including driving motor (1) and a certain amount of nozzle, its characterized in that, driving motor (1) is respectively through taking the transmission system drive subassembly (5) are changed to the nozzle and are rotated, be equipped with one-way overload protection device (4) in the belt transmission system, driving motor (1) can corotation and reversal.

2. Automatic nozzle changing device according to claim 1, characterized in that the belt drive system comprises a primary belt (6) and a secondary belt (7), a primary driving wheel (8) is arranged on an output shaft of the driving motor (1), the primary driving wheel (8) drives a primary driven wheel (9) to rotate through the primary transmission belt (6), the primary driven wheel (9) drives the secondary driving wheel (10) to rotate through the unidirectional overload protection device (4), the secondary driving wheel (10) drives the secondary driven wheel (11) to rotate through the secondary transmission belt (7), a plurality of secondary driven wheels (11) are arranged, each nozzle replacing component (5) is respectively connected with the secondary driven wheels (11), the secondary driven wheel (11) drives the nozzle replacing component (5) to rotate.

3. The automatic nozzle replacing device according to claim 2, wherein the unidirectional overload protection device comprises a fixed shaft (43) and a driving fluted disc (41) and a driven fluted disc (42) which are matched with each other, one end of the fixed shaft (43) is fixedly provided with the primary driven wheel (9), the driven fluted disc (42) is coaxially and fixedly connected with the secondary driving wheel (10), the secondary driving wheel (10) is arranged on one side of the driven fluted disc (42) opposite to the driving fluted disc (41), the driven fluted disc (42) and the secondary driving wheel (10) are integrally sleeved on the middle of the fixed shaft (43), and the driving fluted disc (41) and the fixed shaft (43) are circumferentially relatively fixed and are axially in sliding fit;

one of the joint surfaces of the driving fluted disc (41) and the driven fluted disc (42) is provided with ratchet teeth (411), the other joint surface of the driving fluted disc and the driven fluted disc is provided with a ratchet tooth groove, the ratchet teeth (411) are meshed with the ratchet tooth groove, and the fixed shaft (43) is also provided with a pre-tightening assembly which can enable the driving fluted disc (41) to tightly press the driven fluted disc (42) with certain pressure.

4. The automatic nozzle replacing device according to claim 3, wherein a threaded portion is formed at one end of the fixed shaft (43) far away from the primary driven wheel (9), an adjusting nut (45) is mounted on the threaded portion through threads, a spring (44) is arranged on one side, back to the driven fluted disc (42), of the driving fluted disc (41), the spring (44) is sleeved on the fixed shaft (43), one end of the spring (44) abuts against the driving fluted disc (41), and the other end of the spring (44) abuts against the adjusting nut (45).

5. The automatic nozzle changing device according to any one of claims 2 to 4, further comprising a number of tension pulleys (12), wherein the secondary transmission belt (7) between two adjacent secondary driven wheels (11) passes around the tension pulleys (12), the pressure direction of the secondary transmission belt (7) on the secondary driven wheels (11) is opposite to or obtuse to the pressure direction of the secondary transmission belt (7) on the tension pulleys (12), and the rotation direction of the secondary driven wheels (11) is opposite to the rotation direction of the tension pulleys (12).

6. The automatic nozzle replacing device according to any one of claims 2 to 4, further comprising a box body (13), wherein a base plate (3) is arranged in the box body (13), the driving motor (1) and the secondary transmission belt (7) are positioned below the base plate (3), the output shaft of the driving motor (1) and the one-way overload protection device penetrate through the base plate (3), the primary transmission belt (6) and the nozzle replacing component (5) are positioned above the base plate (3), a window (15) is arranged on the top surface of the box body (13) corresponding to the position of the nozzle replacing component (5), and the nozzle replacing component (5) is positioned in the window (15).

7. Automatic nozzle changing device according to claim 6, characterized in that a flap (16) is provided above the window (15), the flap (16) being adapted to the dimensions of the window (15), the window (15) being completely covered when the flap (16) is closed.

8. The automatic nozzle replacing device according to claim 7, wherein the base plate (3) is provided with a flip driving motor (19) and a flip shaft (18), an output shaft of the flip driving motor (19) is provided with a driving gear (21), the flip shaft (18) is provided with a driven gear (14), the driving gear (21) is meshed with the driven gear (14), two sides of the flip (16) are respectively provided with a rotating arm (17), the end part of the rotating arm (17) is fixedly connected with the flip shaft (18), and the flip driving motor (19) acts to open or close the flip (16).

9. The automatic nozzle changing device according to claim 8, wherein the rotating arms (17) are respectively located at two sides of the box body (13), at least one of the two sides of the box body (13) is provided with an inductive switch (20), the inductive switch (20) is used for detecting the position of the rotating arms (17), and the inductive switch (20) is in signal connection with the flip cover driving motor (19).