JPH07237609A - Packing bag supplier - Google Patents

Abstract

PURPOSE:To allow packing bags to be easily taken out one by one with a mouth of the bag extremely easy to open or with the mouth open to provide a supplier inexpensively. CONSTITUTION:Holding members 8, 8' are brought into contact with or pressed against an uppermost surface of numerous packing bags 11 made of plastic and advanced toward a feeding direction, so that only the packing bag 11 at the most upper position can be securely sent out by a simple mechanism. Further, since a frictional member 21 is brought into contact with or pressed against a lower face of the packing bag 11 during the feeding step, relative displacement occurs on the upper and lower faces of the bag 11. The upper face of the packing bag which is easy to hold due to this relative displacement is held and transferred to a supplying position 2, so that the bag can be supplied to the supplying position in a very short time while a mouth of the bag is extremely easy to open.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention reliably secures a plastic bag used in a supermarket or the like.
The present invention relates to a packaging bag supply device that can take out products one by one and supply the packaging bags in a state where a product purchased by a customer can be easily accommodated.

[0002]

2. Description of the Related Art In supermarkets and the like, thin plastic sheet packaging bags are used to bring back products purchased by customers. These packaging bags are usually stacked near the checkout counter, and the cashier's clerk gives the customer the required number of sheets and carries them with the product purchased by the customer to the packaging table to open the packaging bag himself. Or the packaging bag taken out by the cashier's clerk is opened and the paid product is packaged and given to the customer.

[0003]

In the packaging bag, since the plastic sheets of the material are charged with static electricity or are in close contact with each other during storage, when the uppermost one is taken up, the lower one is put together. There is a problem that it takes a lot of time to take them out one by one.

Further, when a customer tries to put a product in a packaging bag, the opening of the bag is difficult to open, so that it takes a lot of time for the packaging work and there is a problem that the periphery of the packaging table is crowded.

In order to solve this problem, it is known that the supply of the packaging bag is automated. However, in these devices, after the packaging bag is removed from the supply place, the operation of supplying the next packaging bag is performed. Many started, and it took time to supply the packaging bags. In the case of a device in which the packaging bags are sequentially supplied without time, a plurality of devices intervene between the removal of the packaging bags and the supply, and the packaging bags are delivered between the devices. Therefore, there is a problem that the equipment becomes complicated and expensive, and the packaging bag cannot be reliably supplied due to the complicated process.

In view of these problems, the present invention makes it possible to easily take out the packaging bags one by one in a state where the bag mouth of the packaging bag is extremely easy to open or the mouth of the bag is open.
Moreover, it is an object of the present invention to provide an extremely simplified device that does not require much time for supply work at low cost.

[0007]

SUMMARY OF THE INVENTION In a packaging bag feeding device of the present invention, a holding member is brought into contact with or pressed against the uppermost surface of a large number of packaging sheets made of plastic sheets stacked at a feeding position to feed the packaging bag. By moving to the uppermost packaging bag, the feeding means for sequentially delivering the packaging bag to the transport surface and the lower surface of the packaging bag delivered to the transport surface are brought into contact with or pressed by the friction member, and the relative displacement is performed on the upper and lower surfaces of the packaging bag. And a gripping / conveying unit that grips and hangs the upper surface side of the peeled packaging bag and conveys the packaging bag to the supply position. There is.

In the apparatus for supplying a packaging bag according to the present invention, the feeding means is composed of a plurality of holding members spaced in the feeding direction, and at least a part of the holding members in contact with the packaging bag has higher friction than the packaging bag. Made of wood.

In the apparatus for supplying a packaging bag according to the present invention, the plurality of holding members move in a circulating manner between the feeding position and the feeding position, are separated from each other at the feeding position, and are brought into contact with or pressed against the upper surface of the packaging bag. The at least two holding members approach each other at the peeled position to form a gripping / conveying means for gripping the upper surface side of the packaging bag.

The packaging bag supply device of the present invention further comprises bag opening means for blowing air into the packaging bag during transportation to the supply position.

In the packaging bag supply device of the present invention, the bag opening means sucks almost one side of the packaging bag by the suction device having a large number of suction holes on the opposite surface on one side of the packaging bag, and the suction device is installed. It is a means for opening the bag by blowing air into the packaging bag after the bag is moved in the detaching direction.

[0012]

[Function] Since the holding member is brought into contact with or pressed against the uppermost surface of the packaging bags made of a large number of plastic sheets and proceeds in the delivery direction as it is, only the uppermost packaging bag can be reliably delivered by a simple mechanism. Since the friction member is brought into contact with or pressed against the lower surface of the packaging bag in the stage of further feeding, relative displacement occurs on the upper and lower surfaces of the packaging bag. Since the upper surface of the packaging bag that is easily pinched due to this relative displacement is gripped and conveyed to the supply position, it can be supplied to the supply position in a short time with the bag mouth of the packaging bag being very easily opened. become.

By making the coefficient of friction generated between the holding member, which is the feeding means, and the packaging bag larger than the coefficient of friction between the packaging bags, the packaging bag can be reliably transported.

By making the plurality of holding members have a function of gripping the upper surface side of the packaging bag, it is not necessary to separately provide a gripping member, and the structure is simplified.

During the transportation of the packaging bag to the supply position, air is blown into the grasped packaging bag on the upper surface side of the packaging bag, so that the user can receive the packaging bag with the bag mouth completely opened. Will be able to supply.

By adsorbing substantially the entire one side of the packaging bag with the adsorption device and then blowing air into the packaging bag, the packaging bag with the opened mouth can be more reliably supplied to the user.

[0017]

EXAMPLES Examples of the present invention will be described below.
Reference numeral 1 denotes a supply box for automatically supplying a packaging bag, and a packaging bag supply port 2 is opened at the left end of the drawing. Also,
In the supply box 1, a supply device for a packaging bag that carries the packaging bag to the supply port 2 is installed.

As shown in FIGS. 1 and 2, this packaging bag feeder has a carrier chain 5 which rotates in an endless track by the rotational power of a drive sprocket 4 driven by a motor 3 and each guide sprocket 6. is doing.

A large number of carrier pieces 7 are further installed in a grid pattern between the carrier chains 5 so as to follow the carrier chains 5. In this embodiment, two types of holding members 8 and 8'are fixed on the transport piece 7 at predetermined positions.

Although the holding member 8'is merely fixed on the carrying piece 7, the holding member 8 is basically a fixing piece 9 '.
And the movable piece 10, as will be described later, during movement,
By applying a predetermined force, only the movable piece 10 is separated from the fixed piece 9, and normally, the fixed piece 9 and the movable piece 10 are in contact with each other by a restoring spring (not shown) or the like. . At least the outer surfaces of the holding members 8 and 8 ′ are made of a soft elastic material such as rubber or resin, and when they come into contact with plastic sheets, the friction force is higher than the friction force between the plastic sheets. It is a material that gains strength. For example, a silicon-based material is preferable.

Reference numeral 11 denotes a packaging bag made of plastic sheets, and a state in which a large number of the packaging bags are stacked on the mounting table 12 is shown. A side plate 13 is fixed to one side surface of the mounting table 12, and an elevating plate 14 is guided to the side plate 13 by a vertical groove 16 so as to be vertically movable. Reference numeral 15 is a vertical plate that is guided up and down by the elevating plate 14.

The leading end of the stacked bundle of packaging bags 11 is placed on a pallet 17, and the pallet 17
The piston cylinder 18 is controlled by a controller (not shown) so that it can be moved up and down in a timely manner.

A workbench 19 functions as a conveying surface for the packaging bag 11, and an opening 20 is formed in the substantially central portion thereof. The friction member 21 looking through the opening 20 from below is
The piston cylinder 22 controlled by a controller (not shown) ascends, penetrates the opening 20, and is exposed upward. The worktable 19 and the upper surface of the pallet 17 are made of a low friction material having an extremely low coefficient of friction with respect to the plastic bag 11 made of plastic sheet.
At least the upper surface of the friction member 21 is made of a material that gives a relatively high frictional force to the packaging bag 11 made of a plastic sheet. This material is also preferably a silicon-based material.

Further, dogs 23 are extended above both sides of the pallet 17 and the workbench 19, respectively, and as shown in FIG. 5, when the holding member 8 passes through the dog 23 portion, it is fixed. The movable piece 10 is separated from the piece 9. That is, since at least the entrance portion of the dog 23 is formed into a tapered receiving opening and the inside of the dog 23 is formed narrower, the roller 28 of the movable piece 10 that rides on the dog 23 has the lever 27 centered around the axial point 27. By rotating 26, the movable piece 10 is separated from the fixed piece 9.
Of course, after passing through the dog 23 portion, the fixed piece 9 and the movable piece 10 are brought into contact with each other and restored by an unillustrated internal restoring spring.

The operation of the above-described packaging bag supply device will be described with reference to FIGS. 3 to 6. FIG. 1 shows bag opening means for surely opening the bag by blowing air into the bag 11. However, even if the bag opening means is not attached, the bag having the above structure is provided. The above-mentioned supply device can effectively supply the packaging bags one by one.

Although the controller is not shown, the motor 3, the piston cylinder 22, and the piston cylinder 18 for rotating the transport chain 5 detect when the packaging bag 11 is taken out from the supply port 2 or the supply box. It is programmed that the buttons attached to the outside of 1 operate in a linked manner, send the next packaging bag 11 to the supply port 2, and stop the operation until the next command. Of course, the holding members 8 and 8'on the endless track move the next packaging bag 11 to the position of the bag opening means even in the stopped state.
Alternatively, the next packaging bag 11 is prepared on the workbench 19 and is on standby. By using such an endless track, the next packaging bag can be supplied to the supply port 2 in a short time.

As shown in FIG. 3, the drive sprocket 4,
The guide sprocket 6 and the transport chain 5 start driving, and the holding members 8 and 8 ′ face downward at the delivery position,
It approaches the upper part of the packaging bag 11. Here, as shown in the drawing, when the piston cylinder 18 starts to rise and the uppermost surface of the packaging bag 11 is brought into contact with or pressed by the holding member 8, the one packaging bag 11 located at the uppermost position holds this. It is conveyed to the left side of the drawing by the member 8. Next, the rear holding member 8 ′ also comes into contact with the rear portion of the packaging bag 11, and the packaging bag 11 is more reliably transported to the workbench 19 as shown in FIG. 4, and at this point, as shown in FIG. The piston cylinder 18 lowers the pallet 17.

This is because the frictional force between the holding members 8 and 8'and the packaging bag 11 is larger than the frictional force between the packaging bags 11 as described above, and the packaging bag 11 has a small friction coefficient. It is transported smoothly on the table 19. Then, when this one packaging bag 11 reaches a predetermined position, the next piston cylinder 22 starts to rise, and the friction member 21 having a relatively high friction coefficient is brought into contact with or pressed against the lower surface of the packaging bag 11. As a result, relative displacement occurs on the upper and lower surfaces of the packaging bag 11, and the upper and lower surfaces of the packaging bag 11 are separated.

The operation of such a peeling means is performed by the packaging bag 11
The friction member 21 from below for a predetermined time when moving
Alternatively, the movement of the packaging bag 11 may be temporarily stopped, the friction member 21 may be applied, and then the movement of the packaging bag may be restarted.

When peeling occurs on the upper and lower surfaces of the packaging bag 11,
The upper surface of the packaging bag is in an extremely easy-to-grasp state. Here, as shown in FIGS. 5 and 6, the upper surface of the packaging bag 11 is gripped by the holding member 8, and the holding member 8 is changed to gripping / conveying means.

Here, the holding member 8 will be described. As shown in FIGS. 3 to 6, the holding member 8 is formed by a fixed piece 9 and a movable piece 10, and normally both of them are provided. The pieces 9 and 10 are abutted by a restoring spring (not shown). However, before the holding member 8 contacts the packaging bag 11, the roller 28 of the holding member 8 rides up inside the dog 23, so that the movable piece 10 is forcibly separated from the fixed piece 9.

That is, the fixed piece 9 and the movable piece 10 of the holding member 8 carry the packaging bag 11 to the workbench 19 in an opened state. Immediately after the upper and lower surfaces of the packaging bag 11 are separated, the holding member 8 is disengaged from the dog 23, so that the fixed piece 9 and the movable piece 10 approach each other as shown in FIG. 6, and the upper surface of the packaging bag 11 is gripped. Become.

After that, the piston cylinder 22 descends at a predetermined timing, and the packaging bag 11 securely gripped by the holding member 8 is conveyed to the supply port 2. In this series of work steps, since the packaging bag 11 is displaced, that is, peeled, on the upper and lower surfaces thereof, the packaging bag 11 supplied to the supply port 2 in this state is in an extremely easy-to-open state. There is. Therefore, the customer does not need time to open the packaging bag.

Next, the additional bag opening means for the packaging bag 11 will be described. This bag opening means is installed between the workbench 19 and the supply port 2 as shown in FIG. 1, and is shown in more detail in FIGS. 7 and 8.

The bag opening means is a substantially box-shaped suction member 31 which is rotated by a predetermined angle by the arm 25 with the rotary shaft 24 as a fulcrum.
A large number of intake holes 38 are formed on one surface thereof. Further, a blower 36 is provided inside the adsorbing member 31 so that the internal air can be forcibly exhausted from the exhaust port 37. An opening / closing lid 29 can be opened and closed at a predetermined timing. Reference numeral 30 denotes a fan that blows air in the opposite direction to the transport direction of the packaging bag 11.

While the packaging bag 11 is conveyed by the holding member 8, the suction member 31 which is the bag opening means is in the state shown in FIG. That is, the suction member 31 is positioned in a state substantially parallel to the traveling direction of the transport piece 7 and is on standby. During this time, the blower 36 rotates and sucks the air in the suction member 31, but since the opening / closing lid 29 is open, air is supplied from this portion into the suction member 31 and the suction hole 38 enters. The suction power hardly works.

Here, when the packaging bag 11 reaches a predetermined position, the movement of the holding member 8 is stopped, and then the opening / closing lid 29 is closed as shown by a broken line. Since the closing of the opening / closing lid 29 blocks the flow of air passing therethrough, the supply of air moves to a large number of suction holes 38, and one side of the packaging bag 11 is sucked to the suction holes 38, that is, one side of the suction member 31. To be done.

Next, when the arm 25 is moved as shown in FIG. 8 while holding one side of the packaging bag 11 almost entirely on one side of the suction member 31, both sides of the packaging bag 11 are forcibly separated. . Here, the fan 30 continuously blows air in the direction of the opening of the packaging bag 11, so that air is blown into the packaging bag 1.
It is sent to the inside of the container 1 without fail, and the packaging bag 11 is surely opened.
The operation of the arm 25, the opening / closing lid 29, etc. is adapted to be performed in accordance with the timing of the entire system by a driving force (not shown) and a controller.

Thus, if the bag opening device is provided in the packaging bag supply device, the packaging bag 11 that does not need to be opened at all can be provided.
It is supplied from the supply port 2 to the user. In this case, the bag opening means uses the suction member 31 to wrap the bag 11.
Although it is configured by the forced opening for adsorbing one side of (1) and the air supply by the fan 30, it is clear that sufficient bag opening is performed even if the air supply by the fan 30 is omitted.

The embodiments of the present invention have been described above with reference to the drawings. However, the specific structure is not limited to these embodiments, and even if there are changes and additions within the scope not departing from the gist of the present invention. Included in the invention.

[0041]

According to the present invention, by automating the carry-out of the packaging bag, the labor of taking out the packaging bag one by one can be saved, and the work of the cashier clerk at the billing counter can be made efficient. it can. In addition, since the packaging bag can be easily taken out one by one with the mouth of the packaging bag easily opened or opened, when the customer tries to put the product in the packaging bag, the time required for the packaging work Can be shortened and congestion around the packaging table can be relieved. Furthermore, the transport means
It moves cyclically between the delivery position and the supply position, and the packaging bags are sequentially supplied, so the packaging bag supply time can be shortened.
Further, since the packaging bag is not transferred between the devices from the delivery to the supply of the packaging bag, the packaging bag can be reliably supplied, and the automated device can be provided at low cost.

[0042]

[Brief description of drawings]

FIG. 1 is a system conceptual diagram of a packaging bag supply device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a delivery position of FIG.

FIG. 3 is a cross-sectional view illustrating an operating state in FIG.

FIG. 4 is a cross-sectional view illustrating an operating state in FIG.

FIG. 5 is a plan view illustrating an operating state of the holding member in FIG.

FIG. 6 is a cross-sectional view illustrating an operating state of a holding member in FIG.

FIG. 7 is a cross-sectional view illustrating an operating state of the bag opening means in FIG.

8 is a cross-sectional view illustrating an operating state of the bag opening means in FIG.

[Explanation of symbols]

1 Supply Box 2 Supply Port 3 Motor 4 Drive Sprocket 5 Conveyor Chain 6 Guide Sprocket 7 Conveyor Pieces 8, 8'Holding Member 9 Fixed Piece 10 Movable Piece 11 Packaging Bag 12 Placement Table 13 Side Plate 14 Elevating Plate 15 Vertical Plate 16 Vertical Groove 17 Pallet 18 Piston cylinder 19 Work table 20 Opening 21 Friction member 22 Piston cylinder 23 Dog 24 Rotating shaft 25 Arm 26 Lever 27 Axial point 28 Roller 29 Open / close lid 30 Fan 31 Adsorption member 36 Blower 37 Exhaust port 38 Intake hole

Claims (5)

[Claims] 1. A holding member is brought into contact with or pressed against the uppermost surface of the packaging bags made of a large number of plastic sheets stacked at the sending position to move in the sending direction,
Sending means for sequentially sending to the transport surface from the uppermost packaging bag, the lower surface of the packaging bag sent to the transport surface, by abutting or pressing a friction member, by causing relative displacement on the upper and lower surfaces of the packaging bag, An apparatus for supplying a packaging bag, comprising: a peeling means for peeling the upper and lower surfaces of the packaging bag, and a gripping / conveying means for gripping and suspending the upper surface side of the peeled packaging bag and conveying it to a supply position. . 2. The feeding means comprises a plurality of holding members which are separated from each other in the feeding direction, and at least a part of the holding member which is in contact with the packaging bag is made of a friction material higher than that of the packaging bag. 1. The packaging bag supply device according to 1. 3. A plurality of holding members move in a circulating manner between a delivery position and a supply position, are separated at the delivery position and are brought into contact with or pressed against the upper surface of the packaging bag, and at least 2 at the position where the packaging bag is peeled off. The packaging bag supply device according to claim 1 or 2, which constitutes a gripping / conveying means for gripping the upper surface side of the packaging bag when the two holding members approach each other. 4. The packaging bag feeding device according to claim 1, further comprising bag opening means for blowing air into the packaging bag during transportation to the feeding position. 5. The bag opening means adsorbs substantially the entire one surface of the packaging bag by an adsorption device having a large number of air intake holes on one side of the packaging bag, and moves the adsorption device in a separating direction. The packaging bag supply device according to claim 4, which is a means for blowing air into the packaging bag to open the bag.