JPH06162344A - Bag carrying-out device for vending machine and bag - Google Patents

Abstract

PURPOSE:To provide a bag carrying-out device for vending machine which is of a low cost and has a simple constitution where bags to be used in carry- back commodities are discharged one by one in accordance with the commodity selling operation. CONSTITUTION:The bag carrying-out device consisting of a bag bundle storage case 1 whose bottom part has a bag discharge hole 1b, a bag bundle suspending hook bar 2 provided on the upper part in this case 1, a feeding roll 4 which is installed in the vicinity of the bag discharge hole and has a D-shaped section, a motor 8 which rotates and drives the feeding roll basing on a bag discharging command, guide rolls 5 arranged in parallel above the feeding roll, and a mobile retaining plate 7 with energizing spring which holds the bag bundle suspensed on the hook bar between the plate 7 itself and guide rolls 5 and presses it to the feeding roll from the rear is mounted on a vending machine. The feeding roll is driven in accordance with the commodity selling operation, and bags are cut off from the bag bundle suspended on the hook bar one by one and are sent to the bag discharge hole so that a customer who purchased commodities can grasp the leading edge of the bag to freely pull out it from the case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mounted on an ice cream vending machine, a beer vending machine, etc., and automatically pays out one by one the take-out bags of the products sold in accordance with the sales operation. And a bag applied to the bag unloading device.

[0002]

2. Description of the Related Art In the above-mentioned ice cream vending machine, beer vending machine, etc., it is difficult to carry the sold products by hand, especially when a plurality of products are collectively purchased. As a service measure for customers, development of a bag unloading device for a vending machine, which is designed to provide one bag for taking out products at a time when the product is sold, is currently underway.

[0003] On the other hand, a bag unloading device which cuts out bags one by one from a bag bundle stored in a vending machine based on a command and dispenses the bags to a bag take-out port is proposed by the same applicant as the present applicant. It has already been proposed as No. 2-9795. This bag unloading device stacks a large number of flat bags and hangs them on a hook bar inside the case, and feeds them together with a feed roller and a press plate that incorporate a freewheel mechanism consisting of a combination of a ratchet wheel and a ratchet pawl. The bag is sandwiched between the two and the feed roller is driven to rotate in this state based on the bag discharge command, so that the bag is
The piece is sent out so that the tip of the bag can be seen through the bag outlet opening at the bottom of the case separated from the hook bar. And
When the customer picks the end of the bag and pulls it toward you, the free wheel mechanism of the feed roller idles and the bag can be pulled out freely.

[0004]

By the way, in the above-mentioned bag unloading device, since the feed roller has the built-in free wheel mechanism, the structure is complicated and the cost is high. The present invention has been made in view of the above points,
It is an object of the present invention to provide a bag unloading device for an automatic vending machine which allows a customer to easily pull out the bag with a simple mechanism, and a bag applied to the bag unloading device.

[0005]

In order to achieve the above object, a bag unloading device of the present invention comprises a bag bundle storage case having a bag discharge opening at the bottom and a bag bundle suspension provided at the upper part of the case. Hook rod for lowering, feed roller installed near bag outlet, motor for driving the feed roller based on the bag delivery command, guide member arranged in parallel with the feed roller, and hanging on the hook rod And a movable holding plate with a biasing spring that presses the bag bundle between the guide member and the feed roller from behind, and the feed roller is a D-shaped cross-section roller whose peripheral surface is partially cut. However, at the end of the bag dispensing operation, the feed roller is driven and controlled so that the cut surface of the roller faces the bag bundle.

Further, the above-mentioned embodiment has the following structure. (1) The guide member is composed of a plurality of guide rollers arranged in a line in the upper and lower direction in parallel with the bag bundle hung on the hook bar. (2) The guide member is composed of a guide plate arranged parallel to the bag bundle or the wall of the bag bundle storage case itself.

(3) A recess for preventing bag entrapment is formed in the peripheral area on the downstream side of the feed roller with respect to the wall surface of the guide member of the above item (2). (4) The movable holding plate is provided with a follow-up roller facing the feed roller. (5) In the above item (4), a roller window is opened at a position facing the feed roller of the movable pressing plate, and the follower roller is rotatably attached so that the roller peripheral surface faces the window.

(6) The bag bundle storage case is attached to the back surface of the front door of the vending machine, and the front door is provided with a bag take-out opening that is in line with the product take-out opening and communicates with the bag pay-out opening of the bag bundle storage case.
On the other hand, the bag for taking out goods of the present invention applied to the bag unloading device has a slit for a handle at the upper end of a flat bag, and a hooking hole for passing a hook bar, and the hole and the upper edge of the bag. A slit for tearing shall be inserted between them.

[0009]

In the above structure, in order to load and set the take-out bag (for example, a polyethylene flat bag) of the product into the bag unloading device installed in the machine, first open the front door of the vending machine and open the door. Open the lid of the bag bundle storage case attached to the back side, hang it through the hook holes in the case through the hanging holes drilled in each bag of the bag bundle, and further hold the free end of the bag bundle with the holding plate, guide member, and feed roller. Sandwich it between. In the standby state, the cut surface of the feed roller (a roller having a D-shaped cross section with a part of the peripheral surface cut) faces the bag bundle and is stopped.

In this state, a bag dispensing command is given to the bag unloading device in accordance with the product selling operation of the vending machine (the bag dispensing command is automatically given for each product selling operation, or is given by a customer's button operation). Method), the feed roller starts to rotate in a fixed direction by driving the motor. As a result, the first bag of the bag bundle, which is in contact with the peripheral surface of the roller, receives a downward handling force due to the frictional force between the bag and the slit (for example, perforated line) at the hook hole that is passed through the hook bar. ) Is torn and separated from the hook bar, and is further fed downward. Then, while the feed roller makes one rotation, the tip of the bag slightly protrudes from the bag outlet of the case and comes out through the bag outlet of the front door of the vending machine.
At the same time, the feed roller stops after one rotation. At the end of this dispensing operation, the cut surface of the feed roller faces the bag as in the standby state, so that the bag is restrained by the feed roller. Therefore, if the customer picks up the end of the bag protruding from the bag outlet and pulls it toward you, the bag can be pulled out freely with almost no resistance. Although some handling force is applied to the second and subsequent sheets of the bag bundle as the feed roller rotates, the frictional force acting between the bags is small, so the second and subsequent bags are separated from the hook bar. However, one bag is discharged in one carrying-out operation. Then, as the number of remaining bags is gradually reduced as the bags are carried out, the movable pressing plate, which is spring-biased in a manner following this, presses the remaining bag bundle toward the feed roller from behind. This makes it possible to reliably carry out all the bags to the last one.

Further, when a bag unloading operation is performed, a recess (a dent) is formed in the wall surface in the peripheral region on the downstream side of the feed roller with respect to the guide plate of the bag bundle arranged in parallel with the feed roller or the case wall. When the bag tries to get entangled with the feed roller, this recess functions as an escape for separating from the feed roller, whereby the tip of the bag is drawn into the narrow gap between the roller and the guide member, It is possible to avoid the occurrence of carry-out troubles such as clogging the place.

Further, the follow-up roller provided on the movable holding plate facing the feed roller is a roller of the feed roller when the feed roller is rotated in a state where the number of remaining bags in the case is completely discharged. It works to prevent the drive motor from locking up. That is, when the bag is out of stock in the case, there is no bag between the feed roller and the movable holding plate.In this state, if the movable holding plate is not equipped with a follow-up roller, the spring bias is applied from behind. The plate surface of the received pressing plate directly contacts and presses the feed roller. Moreover, the movable holding plate has a large friction coefficient unlike a vinyl bag, and therefore, even if the feed roller is rotationally driven, the feed roller having a D-shaped cross section cannot be rotated because it is constrained by the movable holding plate. The drive motor of (1) locks up, and this may cause a failure of the drive motor, which may hinder the sale of products in the vending machine body. In this regard, if a follower roller is provided on the movable presser plate facing the feed roller, even if the feed roller is driven to rotate while the remaining number of bags is zero, the feed roller and a follower roller that is free to rotate. Contact each other, the motor lock is avoided without restraining the rotation of the feed roller.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 shows the structure of the bag unloading device.
In the figure, reference numeral 1 is a bag bundle storage case, and 1a is an opening / closing lid which is provided on the rear surface of the case 1 and hooked to the case, and a bag outlet 1b is opened at the bottom of the case 1. Further, a hook bar 3 for suspending and supporting a bundle of bags 2 (hereinafter referred to as a “bag bundle”) is collectively provided in an upper part of the case, and a hook rod 3 is provided in a lower part of the case near the bag discharge outlet 1b. Is provided with a feed roller 4 facing the bag bundle, and further, a movable pressing plate 7 urged by guide rollers 5 and a spring 6 back and forth so as to sandwich the bag bundle hung on the hook bar 3 from the front and back. I have it. The feed roller 4 and the guide roller 5 are divided into a plurality of pieces and are dispersedly attached to the shaft extending in the width direction of the bag 2.

Here, the feed roller 4 is a roller having a D-shaped cross section in which a part of the peripheral surface is cut. The feed roller 4 is arranged so as to cross the inside of the case 1, and its shaft end is attached to the side surface of the case 1. It is connected to a drive motor 8 with a built-in reduction gear. Further, the guide roller 5 serves to guide and hold the bag bundle at a fixed position, and is rotatably supported above the feed roller 4 in a line in a vertical line. Further, the movable holding plate 7 is attached to the lid 1a of the case 1 together with the biasing spring 6, and when the lid 1a is opened, the movable holding plate 7 is pulled out from the case together.

On the other hand, FIG. 3 shows the structure of a product carry-out bag applied to the bag unloading device. That is, the bag 2 is shown in FIG.
It is a flat bag as shown in (a), and has a slit 2a for a handle at the upper end thereof and the hook rods 3 mentioned above at two left and right positions.
A hooking hole 2b to be passed through is previously processed, and a slit 2c for tearing (for example, a perforation) as shown in FIG. 2B is provided between the hooking hole 2b and the upper edge of the bag.
Is included.

Next, the operation of carrying out the bag having the above construction will be described with reference to FIG.
Will be described. Note that (a) is a standby state, (b) is
The figure shows an intermediate state of the bag dispensing operation, and the figure (c) shows the state of taking out the dispensed bag. First, in order to load and set the bag 2 in the case 1, with the case lid 1a shown in FIG. 1 opened, the hook holes 3b perforated in the bag 2 are inserted into the hook rod 3 in units of the bag bundle. After hanging, the lid 1a is closed and the bag bundle is sandwiched between the guide roller 5 and the movable holding plate 7. In the standby state shown in FIG. 7A, the feed roller 4 is stopped with its cut surface facing the bag bundle. When a bag discharge command is given to the bag discharge device in this state, the drive motor 8 is started and the feed roller 4 is rotated counterclockwise. As a result, a downward handling force is applied to the first bag 2 of the bag bundle that is in contact with the peripheral surface of the feed roller 4, and the bag 2 is torn along the slit 2c in the hooking hole 2b that is passed through the hook rod 3. (Fig. 3 (b)
(See reference) The hook rod 3 is separated from the hook rod 3, and is fed downward as shown in FIG. Then, the tip of the bag 2 slightly protrudes from the bag outlet 1b of the case 1 while the feed roller 4 makes one rotation. When the feed roller 4 makes one rotation, the drive motor 8 is stopped by the control of a self-propelled cam switch (not shown), and the feed roller 4 is in a state where the cut surface faces the bag 2 as shown in FIG. Return. That is, the restraint between the bag 2 and the feed roller 4 delivered to the bag delivery outlet 1b is released. Therefore, when the tip of the bag 2 protruding from the bag outlet 1b is grasped and pulled out forward as shown in FIG. 7C, the bag 2 can be pulled out of the case with almost no resistance without being restrained by the feed roller 4. Become. Thereafter, each time a bag dispensing command is given, one bag is dispensed. When the number of bag bundles remaining in the case decreases as the dispensing operation of the bags 2 progresses, the movable pressing plate 7 biased by the spring pushes the bag bundle forward correspondingly.

Further, in the embodiment of FIG. 1, the guide roller 5 is used as a guide member for supporting the bag bundle at a fixed position. However, instead of the guide roller, a guide plate arranged parallel to the bag bundle may be installed. Alternatively, it can be carried out using the wall of the bag bundle storage case 1 itself. In order to surely perform the series of bag discharging operation, it is preferable that the friction coefficient of the roller is large so that the feed roller 4 does not run idle.

Next, FIG. 4 shows an automatic vending machine equipped with the bag unloading device having the above construction. In the figure, 9 is a front door of the vending machine, 10 is a product outlet, the bag unloading device 11 is mounted on the back side of the front door 9 in line with the product outlet 10, and the bag bundle described in FIG. A bag outlet 12 is opened in the front door 9 so as to be connected to the bag outlet 1b of the storage case 1. In this way, by mounting the bag unloading device 11 side by side with the product outlet 10 in the vending machine, the customer of the vending machine arranges the products taken out from the product outlet 10 after purchasing the product at substantially the same position. The product can be put on the spot into the bag for taking out the product pulled out from the bag outlet 12.

FIG. 5 shows an applied embodiment corresponding to claim 4 of the present invention, in which measures are taken to prevent the occurrence of carry-out trouble in which the tip of the bag 2 is entangled with the feed roller 4 during the carry-out operation of the bag. In this embodiment, the front wall of the case 1 is used as the guide member described above, and the window 1c opened in the wall.
The end surface of the feed roller 4 is looking into the. Here, in the peripheral region on the downstream side (lower side of the roller shaft) of the feed roller 4 with respect to the case wall, there is provided a recess 1d for preventing bag entrapment, which is formed by recessing the wall surface.

That is, when the case wall as the guide member remains flat, the pressing force of the spring 6 exerts a strong force on the feed roller 4 and the bag 2 in contact therewith, especially when the number of remaining bags is large. A large amount of friction is exerted between the rollers 4 and the leading edge of the bag 2 is drawn into the gap between the roller 4 and the window 1c opened in the case wall and entangled with the roller during the bag discharge operation. There is. In this regard, as shown in FIG. 5, if the recess 1d is formed in the case wall in the downstream side peripheral region of the feed roller 4, the recess 1d functions as a relief for the entanglement of the bag 2, and the tip of the bag 2 is Before the bag is drawn into the narrow gap between the roller 4 and the window 1c, it separates from the feed roller 4 and hangs downward. Therefore, it is possible to reliably prevent the bag carrying-out trouble caused by the entanglement with the roller.

FIG. 6 shows an application example corresponding to claims 5 and 6 of the present invention in which the rotational drive of the feed roller is not restricted even when the number of remaining bags is zero. That is, in this embodiment, the follower roller 13 is provided on the movable pressing plate 7 so as to be aligned with the feed roller 4 so as to face each other. The follower roller 13 is arranged in parallel with the feed roller 4 and is rotatably supported by a shaft. The follower roller 13 is aligned with the feed roller 4 and has a roller window 7a opened in the plate surface of the movable holding plate 7 and a peripheral surface of the roller. It is pivotally supported by a bearing (not shown) provided on the back surface side of the pressing plate so as to partially face it.

With this structure, when the bags 2 set in the case 1 are all carried out and the remaining number becomes zero, the movable holding plate 7 urged by the urging spring 6 is pushed forward to the feed roller 4. The follower roller 13 comes into contact.
Therefore, even if the feed roller 4 is rotationally driven in this state, since the feed roller 4 is in contact with the follow-up roller 13 and can rotate without being restricted in rotation, the drive motor 8 is not locked.

[0023]

As described above, according to the bag carry-out device of the present invention, the take-out bag can be automatically dispensed and provided to the user of the vending machine in accordance with the product selling operation. it can. Further, as the feed roller incorporated in the apparatus, a simple roller having a D-shaped cross section with a part of the peripheral surface cut off is adopted, so that it is not necessary to use a freewheel mechanism as in the conventional apparatus and is manufactured inexpensively. it can.

Further, by forming a recessed recess on the wall surface in the peripheral region on the downstream side of the feed roller with respect to the guide plate which serves as the guide member of the bag and the case wall, the bag can be removed during the bag unloading operation. It is possible to avoid the trouble of being carried out, such as being drawn into a narrow gap between the guide wall and entangled with the roller. Furthermore, by adopting a structure in which the movable holding plate is provided with a rotation-free follower roller facing the feed roller, the feed roller is rotated with the remaining number of all the bundles of bags set in the case taken out. Even if driven, the drive motor of the feed roller is not locked by the motor. This will not hinder product sales on the vending machine itself,
It is possible to reliably carry out all the bag bundles set in the case to the last one.

On the other hand, as a bag to be applied to the bag unloading device, it has a handle slit at the upper end of the bag and a hooking hole through which a hook bar is passed, and tears between the hole and the upper edge of the bag. By using the flat bag having slits, advantages such as low cost, low cost, and smooth bag discharging operation by the bag discharging device can be obtained.

[Brief description of drawings]

1A and 1B are configuration diagrams of a bag unloading device according to an embodiment of the present invention, in which FIG. 1A is a vertical side view of the entire device, and FIG.

2A and 2B are explanatory views of a bag dispensing operation according to the configuration of FIG. 1, in which FIG. 2A is a standby state diagram, FIG. 2B is a state diagram during dispensing, and FIG.

3A and 3B show a product carry-out bag applied to the bag unloading device of FIG. 1, in which FIG. 3A is an external view of the entire bag, and FIG. 3B is a partially enlarged view of a hook hole in FIG.

FIG. 4 is a front view of a vending machine equipped with the bag unloading device of FIG.

5A and 5B are views showing an application example of the present invention in which a bag is prevented from being entangled with a feed roller, wherein FIG. 5A is a vertical side view of a bag unloading device, and FIG. Partial enlarged perspective view of the part

6A and 6B are views showing an application example of the present invention in which a motor lock prevention mechanism for a feed roller is applied, in which FIG. 6A is a vertical sectional side view of the entire bag unloading device, and FIG. Perspective layout of parts

[Explanation of symbols]

 1 Bag Bundle Storage Case 1d Bag Envelope Prevention Depression 2 Bag 2a Handle Slit 2b Hooking Hole 2c Tear Slit 3 Hook Rod 4 Feed Roller 5 Guide Roller (Guide Member) 6 Bias Spring 7 Movable Holding Plate 7a Roller Window 8 Drive motor 9 Front door 10 Product outlet 12 Bag outlet 13 Follow roller

Claims (8)

[Claims] 1. A bag unloading device which is mounted on an automatic vending machine and discharges each of the take-out bags into which a product sold for each selling operation is put out, and a bag bundle storage having a bag payout opening at the bottom thereof. A case, a hook rod for suspending a bag bundle provided in the upper part of the case, a feed roller installed in the vicinity of the bag outlet, a motor for rotationally driving the feed roller based on a bag delivery command, and the feed. A guide member for the bag bundle arranged side by side on the roller, and a movable pressing plate with a biasing spring for sandwiching the bag bundle hung on the hook bar between the guide member and pressing it against the feed roller from behind, and The feed roller is a roller having a D-shaped cross section in which a part of its peripheral surface is cut,
A bag unloading device for a vending machine, wherein the feed roller is drive-controlled so that the cut surface of the roller faces the bag bundle at the end of the bag dispensing operation. 2. The bag unloading device according to claim 1, wherein the guide member is a plurality of guide rollers arranged in a line in parallel with a bag bundle hung on a hook bar. Bag unloading device. 3. The bag unloading device according to claim 1, wherein the guide member is a guide plate arranged in parallel with the bag bundle hung on the hook bar, or a wall of the bag bundle storage case. Bag carry-out device. 4. The bag discharging device according to claim 3, wherein a recess for preventing bag entrapment is formed in a peripheral area on the downstream side of the feed roller with respect to the wall surface of the guide member. Unloading device. 5. The bag unloading device for a vending machine according to claim 1, wherein the movable pressing plate is provided with a follower roller facing the feed roller. 6. The bag unloading device according to claim 5, wherein a roller window is opened at a position of the movable holding plate facing the feed roller, and the roller peripheral surface is exposed in the window so that the follower roller is mounted rotatably. A bag unloading device for a vending machine, which is characterized in that 7. The bag unloading device according to claim 1, wherein the bag bundle storage case is attached to the back surface of the front door of the vending machine, and the front door is aligned with the product outlet to be the bag outlet of the bag bundle storage case. A bag unloading device for a vending machine, which is characterized by opening a bag outlet that communicates with the bag. 8. A flat bag is provided with a handle slit and an engaging hole through which a hook bar is passed at the upper end thereof, and a tear slit is provided between the hole and the upper edge of the bag. A bag applied to the bag unloading device according to claim 1.