JP2002041122A - System for controlling process of plastics bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To newly provide a process control system of a plastics bag, and to achieve the rationalization and automation of a work process following the manufacture of the plastics bag. SOLUTION: In a bag-manufacturing station A for manufacturing a plastics bag 2 in which identification codes such as bar codes 3 are attached to many holders 1, each holder 1 is allowed to hold the proper number of plastics bags, and then the identification codes of the holders are detected by detectors such as bar code readers 12 and 15. In a station B in the other process, the holders and the plastics bags are controlled by a computer 9 based on the detection signals of the detectors.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic bag process control system.

[0002] For example, when a plastic bag is filled with an article such as food in a plurality of filling machines, generally,
After the production of the plastic bag, it is manually transported to each filling machine, which requires time and effort. In some cases, it is required to supply different types of plastic bags to each filling machine, and there is a problem that it is troublesome. Before the supply of plastic bags, it is also required to inspect them appropriately. Therefore, after the production of the plastic bag, there is a strong demand for streamlining and automating the subsequent working steps.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a new process control system for plastic bags, and to achieve the rationalization and automation of the subsequent work process after the production of the plastic bags.

[0004]

According to the present invention, an identification code such as a bar code is applied to a large number of holders. The holder is suitable for holding a plastic bag. Then, in a bag making station for manufacturing plastic bags, an appropriate number of plastic bags are held for each holder. Thereafter, each holder is sequentially sent to a station of another process, and an identification code of the holder is detected by a detector such as a bar code reader.At a station of another process, the holder and the holder are detected by a computer based on a detection signal of the detector. Plastic bags are managed.

In a preferred embodiment, each holder is fed by a feed conveyor.

Further, a plastic bag handling station is formed as a station for another process. Then, each holder is sequentially sent to a plastic bag handling station. At the plastic bag handling station, the computer manages the holder and the plastic bag based on the detection signal of the detector, and the plastic bag is supplied as appropriate.

[0007] The plastic bag handling station comprises an article filling station. Accordingly, each holder is sequentially sent to the article filling station, where the holder and the plastic bag are managed by the computer based on the detection signal of the detector,
The plastic bag is supplied as appropriate. Further, the supplied plastic bag is filled with articles such as foodstuffs, and after filling, the plastic bag is discharged from the article filling station.

Further, a plurality of bag making machines are provided at the bag making station, a plurality of filling machines are provided at the article filling station, and at the bag making station, different types of plastic bags are manufactured by each bag making machine. The holder holds it, and each holder is sequentially sent to the article filling station.At the article filling station, the holder and the plastic bag are managed by a computer based on the detection signal of the detector, and the corresponding plastic bag is stored in each filling machine. Is supplied, and the plastic bag is filled with articles such as foodstuffs.

[0009] The plastic bag handling station may be a plastic bag shipping station. Then, each holder is sequentially sent to the plastic bag shipping station. At the plastic bag shipping station, the computer manages the holder and the plastic bag based on the detection signal of the detector, and the plastic bags are supplied, bundled and shipped as appropriate. May be performed.

After the supply of the plastic bags, empty holders are sequentially collected from the plastic bag handling station,
It may be sent to a bag making station and circulated.

In addition to the plastic bag handling station, a holder buffer station is formed as a station for other processes. After the empty holders are collected, they are sequentially passed through the holder buffer station and sent to the bag making station. In the above, the empty holder may be managed by a computer based on the detection signal of the detector, and may be appropriately stored.

In addition to the plastic bag handling station, a plastic bag inspection station is formed as a station for other processes, and before the supply of the plastic bags, each holder is sequentially sent to the plastic bag inspection station. The holder and the plastic bag may be managed by a computer based on the detection signal of the container, and the plastic bag may be inspected as appropriate.

In addition to the plastic bag handling station, a plastic bag buffer station is formed as a station for other processes. Before the supply of the plastic bags, each holder is sequentially sent to the plastic bag buffer station. The holder and the plastic bag may be managed by a computer based on the detection signal of the container, and may be appropriately stored.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below.

In FIG. 1, this is a process management system for a plastic bag, which is a type using a large number of holders 1. As shown in FIG. 2 and FIG.
Is suitable for holding a plastic bag 2 and has a bar code 3. For example, a bottom surface 4, a side surface 5, and an end surface 6 are formed in the holder 1, the bottom surface 4 is rectangular, and the side surface 5 is formed.
Is formed along one side edge of the bottom surface 4, and the end surface 6 is formed along one edge of the bottom surface 4. Further, the bottom surface 4 is inclined downward toward the side surface 5 and downward toward the end surface 6, and the side surface 5 and the end surface 6 are inclined toward the bottom surface 4.
, And is inclined upward and outward. Therefore, a plurality of plastic bags 2 are stacked on the bottom surface 4 of the holder 1 and lean on the side surface 5 and the end surface 6,
Thereby, each plastic bag 2 can be held and stabilized. The bar code 3 is provided on the upper surface of the upper end of the end surface 6 of the holder 1. further,
A plurality of notches 7 are formed on the bottom surface 4 of the holder 1. After holding the plastic bag 2, a plurality of claws can be inserted into the notches 7 and pressed against the lower surface of the plastic bag 2. At the same time, a plurality of claws are pressed against the upper surface of the plastic bag 2, the entire plastic bag 2 is grasped by the claws, and this can be lifted out of the holder 1 and taken out.

In the bag making station A for manufacturing the plastic bags 2, an appropriate number of the plastic bags 2 are held for each holder 1. Then, each holder 1 is sequentially sent to the station of another process. In this embodiment, a circulation conveyor 8 is used as a feed conveyor for the holders 1, and each holder 1 is fed by the circulation conveyor 8. The circulation conveyor 8 comprises a belt conveyor, a chain conveyor, a roller conveyor or a crescent conveyor. Further, a bar code reader is provided at a predetermined position of the circulation conveyor 8, and the bar code 3 of the holder 1 is read and detected by the bar code reader.
The detection signal is sent to the computer 9, and in the station in another process, the holder 1 and the plastic bag 2 are managed by the computer 9 based on the detection signal of the bar code reader.

For example, a plastic bag handling station is formed as a station for another process. The plastic bag handling station comprises an article filling station B. Accordingly, each holder 1 is sequentially sent to the article filling station B, where the holder 1 and the plastic bag 2 are managed by the computer 9 based on the detection signal of the bar code reader, and the plastic bag 2 is supplied appropriately. Is what is done. The entire plastic bag 2 may be grasped by a plurality of claws, lifted from the holder 1, taken out, and supplied. Thereafter, the supplied plastic bag 2 is filled with an article such as food, and after filling, the plastic bag 2 is discharged from the article filling station B.

In this embodiment, a plurality of bag making machines 10 are provided in the bag making station A, and different types of plastic bags 2 are manufactured by each bag making machine 10 in the bag making station A. Further, in each bag making machine 10, a bypass conveyor 11 is provided on one side of the circulation conveyor 8 and reaches the vicinity of the bag making machine 10, and after the plastic bag 2 is manufactured, it is processed manually, and the bypass conveyor 11 is provided. 1
On 1, each plastic bag 2 is loaded and held in the holder 1, each holder 1 is sent by the bypass conveyor 11, passed to the circulation conveyor 8, and each holder 1 is sent by the circulation conveyor 8. The bypass conveyor 11 also comprises a belt conveyor, a chain conveyor, a roller conveyor or a crescent conveyor. Further, in each bag making machine 10, a bar code reader 12 is provided at a predetermined position of the bypass conveyor 11, and each of the holders 1
Passes through the position, the barcode 3 of the holder 1 is read and detected by the barcode reader 12,
The detection signal is sent to the computer 9.

Thereafter, each holder 1 is sequentially sent to the article filling station B. Further, a plurality of filling machines 13 are provided in the article filling station B. The filling machine 13 is of the type using different types of plastic bags 2. Further, at the article filling station B, the branch conveyor 14 branches off from the circulation conveyor 8 and reaches the vicinity of the filling machine 13, a bar code reader 15 is provided at a predetermined position of the circulation conveyor 8, and each holder 1 is positioned at the predetermined position. When passing, the barcode 3 of the holder 1 is read and detected by the barcode reader 15, and the detection signal is sent to the computer 9. Branch conveyor 14
It also comprises a belt conveyor, a chain conveyor or a roller conveyor.

Thereafter, at the article filling station B, the circulation conveyor 8 and the branch conveyor 14 are controlled by the computer 9 based on the detection signals of the bar code readers 12 and 15, and the specific conveyor 1 is sent by the branch conveyor 14. In this way, the holder 1 and the plastic bag 2 are managed, the corresponding type of plastic bag 2 is supplied to each filling machine 13, and the plastic bag 2 is filled with articles such as food.

Therefore, after the production of the plastic bag 2,
The subsequent work process can be rationalized and automated. Even if it is required to supply different types of plastic bags 2 to each filling machine 13, this can be easily dealt with and there is no problem.

Further, in this embodiment, a plastic bag shipping station C is formed as a plastic bag handling station in addition to the article filling station B, and each holder 1 can be sequentially sent to the plastic bag shipping station C. Further, similar to the article filling station B, the plastic bag shipping station C
In FIG. 7, the branch conveyor 16 branches off from the circulation conveyor 8, reaches the vicinity of the plastic bag shipping table 17, a bar code reader 18 is provided at a predetermined position of the circulation conveyor 8, and the bar code reader 18 controls the bar code 3 of the holder 1. Is read and detected, and the detection signal is sent to the computer 9. Therefore, the barcode reader 1
Based on the detection signals 2 and 18, the circulation conveyor 8 and the branch conveyor 16 can be controlled by the computer 9 and the specific holder 1 can be sent by the branch conveyor 16. Thus, the holder 1 and the plastic bag 2 can be managed, and the plastic bag 2 can be appropriately supplied, bundled, and shipped. The branch conveyor 16 also comprises a belt conveyor, a chain conveyor, a roller conveyor or a crescent conveyor.

Further, in this embodiment, at the article filling station B and the plastic bag shipping station C, after the plastic bags 2 are supplied, empty holders 1 are sequentially collected from the article filling station B and the plastic bag shipping station C and branched. It is sent by the conveyors 14, 16 and the empty holder 1 is passed to the circulation conveyor 8, sent to the bag making station A and circulated. Similarly to the bag making station A, a bypass conveyor may be used for the branch conveyors 14 and 16, each holder 1 may be sent by the bypass conveyor, and an empty holder 1 may be transferred to the circulation conveyor 8. In each of the branch conveyors 14, 16, two rows of parallel conveyors may be used, one holder sending each holder 1 and the other conveyor sending an empty holder 1. Therefore, after that, at the bag making station A, each holder 1
Each time, an appropriate number of plastic bags 2 can be held and sent again. Further, a bar code reader 19 is provided at a predetermined position on the circulating conveyor 8, and the bar code reader 19 reads and detects the bar code 3 of the holder 1. Based on the detection signal, the computer 9 controls the circulating conveyor 8 and the bypass. The conveyor 11 can be controlled to manage empty holders 1.

Further, in this embodiment, not only the plastic bag handling station but also a holder buffer station D is formed as a station of another process, and after the empty holder 1 is collected, the holder buffer station D is sequentially connected to the holder buffer station D. It is sent to the bag making station A. Further, in the holder buffer station D, a bar code reader 20 is provided at a predetermined position of the circulating conveyor 8, and the bar code reader 20 reads and detects the bar code 3 of the holder 1. Based on the detection signal, the computer 9 Thus, the empty holder 1 can be managed and can be appropriately stored. For example, a plurality of pushers 21 are arranged on one side of the circulation conveyor 8,
A plurality of pushers 22 are arranged on the other side of the circulation conveyor 8. Then, based on the detection signal of the bar code reader 20, the pusher 21 is driven by the computer 9 to push the empty holder 1 to the other side of the circulating conveyor pusher 8, to store the same, and to wait. Thereafter, if necessary, the pusher 22 can be driven to return the empty holder 1 onto the circulation conveyor 8 and send it to the bag making station A. On the other side of the circulation conveyor 8, the empty holder 1 is
Can be raised or lowered, and empty holders 1 can be stacked in multiple stages and stored effectively. It is also conceivable to combine the cleaning device with the cleaning device and appropriately clean the empty holder 1.

Further, as described above, the holders 1 are sequentially sent to the article filling station B and the plastic bag shipping station C, and the plastic bags 2 are supplied appropriately, as described above. A plastic bag inspection station E is formed as a station, and the holders 1 are sequentially sent to the plastic bag inspection station E before the supply of the plastic bags 2. Further, at the plastic bag inspection station E, a bar code reader 23 is provided at a predetermined position of the circulating conveyor 8, and the bar code reader 23 reads and detects the bar code 3 of the holder 1. Based on the detection signal, a computer 9, the holder 1 and the plastic bag 2 can be managed, and the plastic bag 2 can be inspected. For example, at the plastic bag inspection station E, the bypass conveyor 24 is branched from the circulation conveyor 8, and the circulation conveyor 8 and the bypass conveyor 24 are controlled by the computer 9 based on the detection signal of the bar code reader 23. Only the holder 1 is sent, and only the plastic bag 2 is extracted and inspected for inspection. It is also possible to send all the holders 1 by the bypass conveyor 24 and inspect and inspect all the plastic bags 2. When a defective product is found, the entire system may be stopped by operating a switch, or the operator of the bag making station A may be instructed to that effect. The bypass conveyor 24 also comprises a belt conveyor, a chain conveyor, a roller conveyor or a crescent conveyor.

Further, in this embodiment, a plastic bag buffer station F is used as a station for another process.
Before the supply of the plastic bag 2, each holder 1 is sequentially sent to the plastic bag buffer station F. Further, at the plastic bag buffer station F, a bar code reader 25 is provided at a predetermined position of the circulating conveyor 8, and the bar code reader 25 reads and detects the bar code 3 of the holder 1. Based on the detection signal, the computer Holder 1 by 9
And the plastic bag 2 can be managed and stored as appropriate. For example, as in the case of the holder buffer station D, a plurality of pushers 26 are arranged on one side of the circulation conveyor 8 and a plurality of pushers 27 are arranged on the other side of the circulation conveyor 8. And the plastic bag 2 is pushed out to the other side of the circulating conveyor pusher 8, stored, and put on standby. Thereafter, if necessary, the pusher 27 can be driven, and the holder 1 and the plastic bag 2 can be returned to the circulation conveyor 8 and sent to the article filling station B or the plastic bag shipping station C. On the other side of the circulation conveyor 8, the holder 1 and the plastic bag 2 are raised or lowered by the lifter, and as shown in FIG.
The holder 1 and the plastic bag 2 are stacked in many stages,
It can also be stored effectively.

Further, as described above, different types of plastic bags 2 are manufactured by the respective bag-making machines 10 at the bag-making station A. Of the plastic bags 2, a specific type of plastic bag 2 is manufactured. Can be stored in the plastic bag buffer station F, and only the other types of plastic bags 2 can be sent to the article filling station B or the plastic bag shipping station C. Thereafter, another type of plastic bag 2 is transferred to the article filling station B or the plastic bag shipping station C.
It is also possible to send to.

As shown in FIG. 5, in the plastic bag buffer station F, a pusher 28 is provided on one side of the circulating conveyor 8 and a bypass 29 is provided in the circulating conveyor 8.
The pusher 28 is driven by the computer 9 based on the detection signal of the bar code reader 25, and the holder 1 and the plastic bag 2 are connected to the bypass path 29.
It may be extruded upward and stored. The same applies to the holder buffer station D.

For the plastic bag 2, information such as the date of manufacture can be collected and stored by the computer 9 based on the detection signal of the bar code reader 12. Based on the detection signal of the barcode reader 23, the computer 9 can also collect and store information such as the date of inspection and the like. With respect to the articles packed in the plastic bag 2, information such as the filling date can be collected and stored by the computer 9 based on the detection signal of the barcode reader 15.

In this embodiment, the holder 1 is controlled by the bar code readers 12, 15, 18, 20, 23, 25.
Although the bar code 3 is read and detected, it is not always necessary. It is also conceivable that the holder 1 is provided with an identification code other than the barcode 3 and is detected by a detector other than the barcode reader.

The holder 1 may be of any type as long as it can hold the plastic bag 2. For example, the holder 1 may be what is called a cassette, magazine or cartridge, or may be of other types. Holder 1
A type in which the plastic bag 2 is sandwiched between claws may be used, or a type in which the plastic bag 2 is hung may be used.

[0032]

As described above, according to the present invention, after the production of a plastic bag, the subsequent work steps can be rationalized and automated, and the initial purpose can be achieved. .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention.

FIG. 2 is a side view of the holder and the plastic bag of FIG.

FIG. 3 is a perspective view of the holder of FIG. 2;

FIG. 4 is a side view showing a state in which the holder and the plastic bags of FIG. 2 are stacked.

FIG. 5 is an explanatory diagram showing another embodiment.

[Explanation of symbols]

A bag making station B article filling station C plastic bag shipping station D holder buffer station E inspection station F plastic bag buffer station 1 holder 2 plastic bag 3 bar code 9 computer 10 bag making machine 12, 15, 18, 19, 20, 23 , 25 Bar code reader 13 Filling machine

Claims (10)

[Claims] 1. A plurality of holders suitable for holding plastic bags are provided with an identification code such as a bar code, and an appropriate number of plastic bags are held in each of the holders at a bag making station for manufacturing plastic bags. Then, the holders are sequentially sent to stations in other processes, and the identification codes of the holders are detected by a detector such as a barcode reader, and the detection signals of the detectors are sent to the stations in the other processes. A process management system for plastic bags, wherein the holder and the plastic bags are managed by a computer. 2. The process management system for plastic bags according to claim 1, wherein each holder is fed by a feed conveyor. 3. A plastic bag handling station is formed as a station for the other process, and each of the holders is sequentially sent to the plastic bag handling station. At the plastic bag handling station, the computer based on the detection signal of the detector is used. The plastic bag process management system according to claim 1 or 2, wherein the holder and the plastic bag are managed by the control unit, and the plastic bag is supplied as needed. 4. The plastic bag handling station comprises an article filling station, wherein each of the holders is sequentially sent to the article filling station, and at the article filling station, the holder and the plastic bag are processed by a computer based on a detection signal of the detector. Is managed, the plastic bag is appropriately supplied, the supplied plastic bag is filled with an article such as food, and after filling, the plastic bag is discharged from the article filling station. The process management system for a plastic bag according to claim 3. 5. The bag making station is provided with a plurality of bag making machines, the article filling station is provided with a plurality of filling machines, and in the bag making station, different types of plastic bags are provided by each of the bag making machines. It is manufactured and held in each of the holders, and each of the holders is sequentially sent to an article filling station.At the article filling station, the computer manages the holder and the plastic bag based on a detection signal of the detector. 5. A plastic bag of a corresponding type is supplied to each filling machine, and the plastic bag is filled with an article such as food.
A process management system for plastic bags according to item 1. 6. The plastic bag handling station comprises a plastic bag shipping station, wherein each of the holders is sequentially sent to the plastic bag shipping station. At the plastic bag shipping station, based on the detection signal of the detector, the computer operates the plastic bag handling station. The plastic bag process management system according to any one of claims 3 to 5, wherein the holder and the plastic bag are managed, and the plastic bag is appropriately supplied, bundled, and shipped. 7. The method according to claim 3, wherein after the supply of the plastic bag, empty holders are sequentially collected from the plastic bag handling station, sent to the bag making station, and circulated. Process management system for plastic bags described in Crab. 8. In addition to the plastic bag handling station, a holder buffer station is formed as a station for the other process, and after the empty holders are collected, they are sequentially passed through the holder buffer station to the bag making station. Sent at the holder buffer station based on the detection signal of the detector,
8. The computer according to claim 7, wherein said computer manages empty holders and stores them as appropriate.
A process management system for plastic bags according to item 1. 9. In addition to the plastic bag handling station, a plastic bag inspection station is formed as a station of the other process, and before the supply of the plastic bag, each of the holders is sequentially sent to the plastic bag inspection station, 9. The inspection station according to claim 3, wherein the holder and the plastic bag are managed by the computer based on a detection signal of the detector, and the plastic bag is inspected appropriately. Process management system for the plastic bag described. 10. In addition to the plastic bag handling station, a plastic bag buffer station is formed as a station for the other process, and before the supply of the plastic bags, each of the holders is sequentially sent to the plastic bag buffer station. 10. The buffer station according to claim 3, wherein the computer manages the holder and the plastic bag based on the detection signal of the detector, and stores the bag and the plastic bag appropriately. Process management system for plastic bags.