KR20240142919A - Packing apparatus utilizing flexble film as stnthetic rubber - Google Patents

Abstract

A load packaging device for tightly packaging loads on a pallet using an elastic film made of synthetic rubber, comprising: a transport unit for transporting loads loaded on a pallet; a detection unit for detecting the position and size of the load transported by the transport unit; a film supply unit for supplying a film for packaging the load; a packaging unit for packaging the load using the film supplied from the film supply unit; and a control unit for controlling the operations of the transport unit, the film supply unit, and the packaging unit according to a detection signal detected by the detection unit, so that the load loaded on the pallet can be accurately packaged.

Description

{Packing apparatus utilizing flexible film as stnthetic rubber}

The present invention relates to a load packaging device utilizing an elastic film, and more particularly, to a load packaging device that tightly packages a load on a pallet utilizing an elastic film made of synthetic rubber material.

Generally, when storing or moving various loads on a pallet, such as industrial products or other agricultural products, the loads are packaged to prevent them from falling over and to prevent damage to the surface due to external impact or rain, etc.

The most widely known of these packaging methods is the use of paper boxes or wooden boxes, and recently, a method of wrapping with packaging film has been proposed.

The method of wrapping and packaging with the above-mentioned packaging film has the advantages of being easy to package and being able to utilize space efficiently, and such film packaging methods have been widely proposed and studied recently. One of these methods is a method in which heat is applied to a load while it is wrapped in a film to cause the film to shrink, thereby allowing the film to adhere closely to the load and package it.

Examples of such technologies are disclosed in the following documents 1 and 2.

For example, the following Patent Document 1 discloses a method and machine for externally wrapping loads arranged in a palletized or non-palletized package form using a stretching film arranged around a pallet after being pre-stretched around the packages, wherein the film is supplied from a spool or the like stored in a pre-stretched state with a stretch of 150% to 500%, and after being relaxed, the film portion has a tension of 2 to 7 daN/mm2, preferably 2 to 3 daN/mm2, per revolution.

Also, as illustrated in FIG. 1, the following patent document 2 discloses a device for wrapping a laminate (1) of an object with a film (2), comprising: a film supply head (3) for supplying a film (2); a pull-down device (4) for covering a laminate (1) on a pallet (17) with the film (2); and a film supply portion in the form of a film coil (5); the film supply head (3) is provided with a base (6) and a rotatable support portion (7) that can be rotated relative to the base (6); the base (6) is provided with a film supply portion (8) for advancing and conveying the film (2) to the rotatable support portion (7); a guide roller or a deflection roller (9) for the film (2); and the rotatable support portion (7) is provided with a guide ring (10) connected to the base (6) and a film storage portion (11) under the guide ring (10), and an opener (15) for expanding a film section or a tubular film section.

Republic of Korea Patent Registration No. 10-0207305 (registered on April 12, 1999) Republic of Korea Patent Publication No. 2011-0115552 (published on October 21, 2011)

However, the conventional technology described above requires a separate process of applying heat, and although the problem of not being able to use the load when it is vulnerable to heat is solved, there is a problem of a long packaging time because it is wrapped and packaged multiple times.

In addition, in the conventional technology described above, although it can be easily realized for a preset load, there was a problem that the conditions of the entire system had to be changed and used when the type or amount of the load was changed.

In addition, in the above conventional technology, when used continuously for a long period of time, it is difficult to control precise positions due to deterioration in the performance of devices for transporting loads, and in severe cases, there is also a problem that the entire equipment must be reassembled.

The purpose of the present invention is to solve the problems described above, and to provide a packaging device for a load using an elastic film that can accurately package a load by recognizing the position and size of the load loaded on a pallet.

Another object of the present invention is to provide a load packaging device using an elastic film that can precisely package a load even when the function of the device itself deteriorates due to long-term use.

Another object of the present invention is to provide a load packaging device using an elastic film, which can easily and stably package various loads on a pallet by using an elastic film made of synthetic rubber material even when the types and sizes of the loads are different.

In order to achieve the above object, the present invention provides a load packaging device utilizing an elastic film, which is characterized by including a transport unit for transporting loads loaded on a pallet, a detection unit for detecting the position and size of the load transported by the transport unit, a film supply unit for supplying a film for packaging the load, a packaging unit for packaging the load using the film supplied from the film supply unit, and a control unit for controlling the operation of the transport unit, the film supply unit, and the packaging unit according to a detection signal detected by the detection unit.

In addition, in the packaging device according to the present invention, the transport section is provided with transport rails that are continuously provided in a mounting area, a packaging area, and a discharge area, and the detection section detects the size of a load loaded in the mounting area and detects the position of the load transported to the packaging area.

In addition, in the packaging device according to the present invention, the detection unit is characterized by including a width detection sensor and a height detection sensor that detect the width, length, and height of the load mounted in the mounting area, and a position detection sensor that detects the position of the load transferred from the mounting area to the packaging area.

In addition, in the packaging device according to the present invention, the packaging unit is characterized by including a film extraction and holding unit for extracting and holding a film from the film supply unit, a moving frame for movably maintaining the film extraction and holding unit and capable of moving left and right and up and down, and a pressurizing unit mounted on the moving frame for pressurizing the film extraction and holding unit.

In addition, in the packaging device according to the present invention, the film pulling-out holding portion is characterized in that it forms a space inside by stretching an open portion of the film outward at an equal angle, and the pressurizing portion wraps a load with the stretched film, and when the film reaches a position measured by the position detection sensor, it pressurizes the film pulling-out holding portion so that the film is tightly packed on the surface of the load.

As described above, according to the load packaging device utilizing the elastic film according to the present invention, the effect of being able to accurately package the load loaded on the pallet is obtained by providing a detection unit that detects the position and size of the load.

In addition, according to the load packaging device utilizing the elastic film according to the present invention, since the load is packaged by providing a detection unit, the effect of compensating for positional misalignment due to aging of the device is also obtained.

In addition, according to the packaging device for a load utilizing an elastic film according to the present invention, since the position and size of the load loaded on the pallet are recognized and the packaging operation is performed, an effect is also obtained in which the shape of the load, whether circular or polygonal or of various shapes and sizes, can be packaged in its original shape.

Figure 1 is a drawing for explaining the configuration of a device for wrapping a laminate of objects according to a conventional technique.
Figure 2 is a block diagram for explaining the configuration of a loading packaging device utilizing a flexible film according to the present invention.
Fig. 3 is a perspective view showing an example of the configuration of the transport section illustrated in Fig. 2.
Figure 4 is a plan view of the main configuration of the packaging section showing the state in which the film supplied from the film supply section illustrated in Figure 2 is mounted;
Figure 5 is a plan view showing the state in which the film is stretched to package the load in the packaging section.
Figure 6 is a drawing for explaining a configuration for separating a film after packaging a load in a packaging section.

The above and other objects and novel features of the present invention will become more apparent from the description of this specification and the accompanying drawings.

Hereinafter, the configuration of the present invention will be described with reference to FIGS. 2 and 3.

FIG. 2 is a block diagram for explaining the configuration of a loading packaging device using an elastic film according to the present invention, and FIG. 3 is a perspective view showing an example of the configuration of the transport unit illustrated in FIG. 2.

As illustrated in FIG. 2, the load packaging device according to the present invention is a load packaging device utilizing an elastic film, and includes a transfer unit (100) for transferring a load loaded on a pallet, a detection unit (200) for detecting the position and size of the load transported by the transfer unit (100), a film supply unit (300) for supplying a film for packaging the load, a packaging unit (400) for packaging the load using the film supplied from the film supply unit (300), and a control unit (500) for controlling the operation of the transfer unit (100), the film supply unit (300), and the packaging unit (400) according to a detection signal detected by the detection unit (200).

The above-mentioned transport section (100) is formed in a shape of approximately 'ㄴ' as shown in Fig. 3, and a transport rail (140) for automatic transport of the load is provided. Such transport rail (140) is continuously provided in the mounting area (110), the packaging area (120), and the discharge area (130). In the above description, the transport section (100) is described as having a structure of approximately 'ㄴ' in order to save packaging space, but it is not limited thereto, and may be provided in a "ㅡ" shape.

In addition, the detection unit (200) according to the present invention, as shown in FIGS. 2 and 3, detects the size of the load loaded in the mounting area and detects the position of the load transferred to the packaging area, and is equipped with a width detection sensor (201) and a height detection sensor (202) that detect the width, length and height of the load loaded in the mounting area (110), and a position detection sensor (203) that detects the position of the load transferred from the mounting area (110) to the packaging area (120).

The above width detection sensor (201) and height detection sensor (202) measure the width, length, and height of the load loaded on the pallet by applying, for example, a plurality of infrared detection sensors, ultrasonic sensors, or water-emitting sensors. In addition, the above position detection sensor (203) also detects whether the load loaded on the pallet is accurately placed at a designated position in the packaging area (120) by applying, for example, a plurality of infrared detection sensors, ultrasonic sensors, or water-emitting sensors.

In addition, in FIG. 3, for convenience of explanation, the width detection sensor (201) and the height detection sensor (202) are shown as having a structure provided at the upper and lower portions of the mounting area (110), but this is not limited to this, and the width detection sensor (201) and the height detection sensor (202) may be provided at the same time at any one location.

In addition, if a pallet corresponding to a preset size and a load loaded on the pallet are formed in a specific shape, the operation of the width detection sensor (201) and the height detection sensor (202) may be omitted. However, the position detection sensor (203) that detects whether it is accurately placed in a designated position in the packaging area (120) must operate under any conditions. This is because it is necessary to precisely adjust the packaging position even when the position of the transport rail (140) is misaligned due to a deterioration in the function of the transport section (100) in the packaging device according to the present invention or when the function of the pallet transport device (not shown) is deteriorated.

The above film supply unit (300) may adopt a film supply head and a film supply unit in a structure as shown in FIG. 1, for example.

That is, the film supply unit (300) extrudes a synthetic rubber elastic film into a cylindrical shape, winds a plurality of elastic films into a roll shape, cuts the elastic films wound into a length corresponding to the size of the load detected by the detection unit (200), and since both sides of the elastic film cut in this manner are developed, the upper side of the open sides is heat sealed in an approximately M shape and supplied to the packaging unit (400).

Next, the configuration and function of the packaging section (400) will be described with reference to FIGS. 4 to 6.

FIG. 4 is a plan view of the main configuration of the packaging unit (400) showing a state in which a film supplied from the film supply unit (300) shown in FIG. 2 is loaded, FIG. 5 is a plan view showing a state in which a film is stretched to package a load in the packaging unit (400), and FIG. 6 is a drawing for explaining a configuration for separating a film after packaging a load in the packaging unit.

As shown in FIGS. 4 and 6, the packaging unit (400) applied to the present invention includes a film extraction and holding unit (420) that extracts and holds a film (310) from the film supply unit (300), a moving frame (410) that movably holds the film extraction and holding unit (420) and can move left and right and up and down, and a pressurizing unit (440) mounted on the moving frame (410) and pressurizing the film extraction and holding unit (420).

In addition, as shown in Fig. 4, the film ejection holding portion (420) is provided in four pieces so that when the film (310) is ejected from the film supply portion (300), the open portion is elongated outward at an equal angle to form a space inside. The film ejection holding portion (420) is inserted into the approximately cylindrical film (310) to hold the film in a square shape as shown in Fig. 4.

In this way, as shown in Fig. 4, with the film (310) embedded in the film-extraction holding unit (420), the film (310) is stretched to a range corresponding to the width of the load detected by the detection unit (200) as shown in Fig. 5. In this way, the stretching of the elastic film (310) is performed so that it stretches to an expansion value of 150%-200% by reducing the material thereof, that is, the synthetic rubber material.

That is, the film pulling-out holding member (420) is mounted on the first cylinder (430) so as to be able to move approximately diagonally from the moving frame (410) as shown in FIG. 4. The first cylinder (430) may use pneumatic or hydraulic pressure. In addition, along with each diagonal movement of the film pulling-out holding member (420), the moving frame (410) also moves in the outward direction where the film (310) is provided as shown in the arrow direction in FIG. 4.

The movement of the moving frame (410) and the film pulling holding unit (420) as described above is realized by the control of the control unit (500) according to the signal detected by the detection unit (200).

The above pressurizing unit (440) wraps the load with an extended film, and when the moving frame (410) reaches the position measured by the position detection sensor (203), the film pulling-out holding unit (420) is pressed so that the film pulling-out holding unit (420) is pulled out from the film (310). This movement of the pressurizing unit (440) is realized by a linear movement by a second cylinder (450) having the same structure as the first cylinder (430).

As described above, when the film pulling holding member (420) is pulled out of the film (310), the stretched film (310) returns to a state as shown in FIG. 4 and is tightly packed on the surface of the load.

The above control unit (500) is composed of a conventional microprocessor and includes a memory for storing preset information. Preferably, it may be provided with a computer system equipped with a monitor and an input means so that the shape and movement of the load detected by the detection unit (200) can be displayed on the monitor and monitored, and position adjustment for the packaging area can be realized by adjustment using the input unit.

The following describes a packaging method according to the packaging device described above.

A pallet loaded with cargo to be packaged by a separate moving device is mounted on the mounting area (110) of the transport unit (100).

When the above load is mounted on the mounting area (110), the width detection sensor (201) and the height detection sensor (202) detect the width, length, and height of the load and transmit a detection signal to the control unit (500).

The control unit (500) controls the operation of the packaging unit (400) according to the detection signal. Accordingly, the packaging unit (400) maintains the moving frame (410) and the film extraction and holding unit (420) in a state as shown in Fig. 4 so as to extract and hold the film (310) from the film supply unit (300). That is, the film extraction and holding unit (420) is inserted into the approximately cylindrical film (310) to maintain the film in a square shape as shown in Fig. 4.

Thereafter, the load moves along the guide rail (14) to the packaging area (120) and stops, and in this stopping area (120), the position detection sensor (203) detects whether the load is maintained in the correct position. This position detection signal is transmitted to the control unit (500), and the control unit (500) controls the transport device that controls the transport of the load according to this position detection signal to make fine adjustments so that the load is in the correct position. That is, the control unit (500) compares the information on the up-and-down movement trajectory of the packaging unit (400) stored in the memory with the position information detected by the position detection sensor (203), and controls the transport device according to the result of this comparison so that the load is

Control to come to the correct position.

When the control unit (500) determines that the load is in the correct position, the moving frame (410) and the film pulling and holding unit (420) of the packaging unit (400) move in the direction of the arrow in FIG. 4 to maintain the state in FIG. 5 and lower the load to package it.

That is, in the packaging device according to the present invention, the film supply unit (300) is provided at the upper portion of the packaging area (120), and the packaging unit (400) is structured to move from the upper portion to the lower portion of the load on which the film supply unit (300) is provided to perform packaging.

Accordingly, as shown in Fig. 5, the film (310) that is maintained in an extended state corresponding to the width and length of the load is lowered by the vertical moving frame (410) while the film pulling out holding unit (420) maintains the film to package the load.

When the moving frame (410) reaches the vicinity of the pallet on which the load is loaded, i.e., the pressurizing member (440) illustrated in FIG. 6 wraps the load with the stretched film, and when the moving frame (410) reaches the position measured by the position detection sensor (203), the film extraction support member (420) is pressed so that the film extraction support member (420) is extracted from the film (310).

When the packaging work as described above is completed, the moving frame (410) rises toward the film supply section (300) to perform the work as shown in FIG. 4, the load in the packaging area (120) moves to the discharge area (130), and the work as described above is repeated to perform continuous packaging work.

By applying the packaging device as described above, the load can be prevented from falling over on the pallet while maintaining its shape, and the surface of the load can be protected from the outside.

Although the invention made by the present inventor has been specifically described according to the above embodiments, the present invention is not limited to the above embodiments and can be modified in various ways without departing from the spirit thereof.

100 : Transport section
200 : Detection Unit
300 : Film supply section
400 : Packaging Department
500 : Control Unit

Claims (3)

As a packaging device for cargo using elastic film,
A transport section that transports loads loaded on a pallet;
A detection unit that detects the position and size of the load being transported from the above transport unit;
A film supply section for supplying film for packaging the above load;
A packaging unit that packages the load using the film supplied from the film supply unit.
It includes a control unit that controls the operation of the transport unit, film supply unit, and packaging unit according to the detection signal detected by the detection unit.
The above transport section has transport rails continuously provided in the mounting area, packaging area, and discharge area,
A packaging device, characterized in that the detection unit includes a width detection sensor and a height detection sensor that detect the width, length, and height of a load mounted in the mounting area, and a position detection sensor that detects the position of a load transferred from the mounting area to the packaging area.
In the first paragraph,
The above packaging section comprises a film extraction and maintenance section for extracting and maintaining film from the film supply section;
The above film extraction support member is maintained in a movable state and the movable frame can move left and right and up and down,
A packaging device characterized by including a pressurizing unit mounted on the above moving frame and pressurizing the film pulling-out holding unit.
In the second paragraph,
The above film pulling maintenance part extends the open portion of the film outward at an equal angle to form a space inside,
A packaging device characterized in that the pressurizing unit wraps the load with the stretched film, and when the film reaches a position measured by the position detection sensor, pressurizes the film pulling-out holding unit so that the film is tightly packed on the surface of the load.