Packaging bag dispenser

Abstract

This product provides a packaging bag stocker that increases the number of packaging bags that can be stored, reduces the installation space required for the packaging machine, and allows for smoother unloading of the bags. [Solution] The packaging bag stocker 10 has a bag feeding mechanism consisting of a main transport path 12A equipped with multiple main partition members 22 arranged at predetermined intervals in the stocker body 11, and a secondary transport path 12B equipped with multiple secondary partition members 32 arranged at the same intervals as the main partition members. The main partition members and secondary partition members partition and hold multiple bundles of packaging bags in the stock room 16, and the discharge conveyor 50 smoothly discharges the packaging bags by sequentially sending the bundles of packaging bags at the bottom of the stock room to the discharge room 17.

Description

Technical Field

[0001] The present invention relates to a packaging bag stocker for stocking a plurality of packaging bags that, when stacked with their orientations aligned, have a higher bulge on one end side than on the other end side.

Background Art

[0002] A packaging machine that conveys a packaging bag along a predetermined packaging path and fills the packaging bag with a product to be packaged to produce a packaged product has a bag-feeding device for supplying the packaging bag to the packaging path. The bag-feeding device is composed of a bag-feeding conveyor on which packaging bags are arranged in order from the start end to the end, and a bag-feeding arm disposed near the end of the bag-feeding conveyor and having a suction cup at its tip. The bag-feeding device can feed the packaging bag to the packaging path by successively delivering the packaging bag that has reached the end of the bag-feeding conveyor to a gripper that is adsorbed by the bag-feeding arm and moves along the packaging path. Here, in order to easily increase the stock quantity of the packaging bags in the bag-feeding device, simply extending the bag-feeding conveyor and increasing the number of packaging bags arranged on the bag-feeding conveyor will do. However, when the bag-feeding conveyor is extended, a flat space as wide as the length of the bag-feeding conveyor is required separately from the packaging path. On the other hand, by providing a packaging bag stocker capable of stacking and stocking a plurality of packaging bags near the start end of the bag-feeding conveyor, the bag-feeding conveyor can be shortened and the packaging machine can be made compact.

[0003] As shown in FIG. 7, the packaging bag stocker has a box-shaped stocker body installed on the start-end side 100a of the bag-feeding conveyor 100. Inside the stocker body, a plurality of packaging bags are stacked and stored with their orientations aligned. And it is configured to be carried out by the bag-feeding conveyor 100 in order from the lowermost packaging bag.

Prior Art Documents

Patent Documents

[0004] [Patent Document 1] No citation [Overview of the project] [Problems that the invention aims to solve]

[0005] In the case of flat bags where the thickness of the sealed end and the open end of the packaging bag are the same, there is no particular problem, as the stacked packaging bags are unlikely to collapse even when stored in a packaging bag stocker. However, when a zippered stand-up pouch B1, as shown in Figure 5, or a zippered flat pouch B2, as shown in Figure 6, is stacked with the orientation of the packaging bags aligned, the side with the zipper will be bulkier than the side without the zipper due to the thickness of the zipper C. Figure 7 is an explanatory diagram showing the state when multiple zippered stand-up pouches B1 are stacked. In this way, when multiple zippered packaging bags are stacked, the stacked packaging bags tilt toward the side without the zipper C. Therefore, there is a problem in that the number of packaging bags that can be stored is less than the size of the packaging bag stocker. Furthermore, as shown in Figure 7, when a packaging bag is pulled out from the bottom of a tilted bundle of packaging bags by a bag-feeding conveyor, the bundle of packaging bags collapses inside the stocker body, causing the packaging bags to get caught or turned inside out at the discharge port, preventing smooth discharge, resulting in jams or a large number of packaging bags collapsing out of the discharge port at once.

[0006] Therefore, the problem that the present invention aims to solve is to provide a packaging bag stocker that increases the number of packaging bags that can be stored, reduces the installation space of the packaging machine in a planar manner, and allows for smooth unloading. [Means for solving the problem]

[0007] The packaging bag stocker according to claim 1 has a stockroom with walls on all four sides that surround bundles of packaging bags, each bundle containing a predetermined number of packaging bags where, when stacked in the same orientation, the bulk of one end edge is greater than the bulk of the other end edge; One open end face of the stockroom is provided with a supply opening for supplying the bundles of packaging bags in bundles, and the other open end face is provided with In the specified state A series of unloading rooms equipped with an outlet for removing packaging bags are installed. A packaging bag stocker that stores multiple bundles of packaging bags in the aforementioned stockroom, The packaging bag stocker is provided with a bag feeding mechanism that has a transport path for transporting the bundles of packaging bags one bundle at a time from the supply port to the discharge port. Multiple partition members are arranged at predetermined intervals in the aforementioned transport path. hand , The partition member is designed to separate and hold multiple bundles of the packaging bags, one bundle at a time. 、 A discharge conveyor is provided below the discharge room, having a surface that is stacked in the aforementioned bundle of packaging bags and has greater friction with the packaging bags than with each other. When the discharge conveyor discharges the packaging bags sequentially from the bottommost packaging bag in the bundle of packaging bags supplied to the discharge room, The packaging bags are discharged from the outlet with the lower front portion of the packaging bag to be drawn later overlapping the upper rear portion of the packaging bag that was drawn first from the bundle of packaging bags. It is characterized by the following.

[0008] The packaging bag stocker according to claim 2 is the invention according to claim 1, wherein the transport path is The supply port side and the discharge port side of the stockroom It is characterized by being configured to circle around between the two points.

[0009] The packaging bag stocker according to claim 3 is characterized in that, in the invention according to claim 1, the transport path is composed of a main transport path equipped with a power source and a secondary transport path arranged opposite the main transport path with the bundle of packaging bags in between.

[0010] The packaging bag stocker according to claim 4 is characterized in that, in the invention according to claim 3, the partition member is composed of a main partition member disposed in the main transport path and a secondary partition member disposed in the secondary transport path. [Effects of the Invention]

[0011] The packaging bag stocker according to the present invention is equipped with a bag feeding mechanism that has a transport path for transporting bundles of packaging bags from the supply port to the discharge port, and a plurality of partition members arranged at predetermined intervals along the transport path divide and hold multiple bundles of packaging bags into separate bundles. This allows even resealable packaging bags to be stored without any difference in volume between the opening and bottom by using dividers to separate each bundle. As a result, the number of packaging bags that can be stored can be increased, and the installation space for the packaging machine can be reduced in terms of horizontal space. Furthermore, because each bundle is held in place by a divider, the load on the bottommost packaging bag in a stacked bundle is smaller than that on a simply stacked bundle, allowing the bottommost packaging bag to be smoothly transported out of the packaging bag stocker by conveyor. Preferably, the transport path is designed to circle between the vicinity of the supply port and the vicinity of the discharge port of the packaging bag stocker. This allows the partition members installed in the transport path to also circle between the vicinity of the supply port and the vicinity of the discharge port, thereby increasing the number of packaging bags that can be stored. Preferably, the transport path consists of a main transport path equipped with a power source and a secondary transport path positioned opposite the main transport path with the bundle of packaging bags in between. This allows the bags to be sequentially transported downwards to the stocker by the opposing main and secondary transport paths, enabling smooth unloading of the packaging bags. More preferably, the main transport path has a main partition member, and the secondary transport path has a secondary partition member. This allows partition members to separate not only the end on the zipper side, where the volume is higher, but also the end on the opposite side, where the volume is lower, for each bundle of packaging bags. As a result, the number of packaging bags that can be stored can be increased, and the installation space of the packaging machine can be reduced in terms of planar space. Furthermore, since the main partition members are arranged in the main transport paths facing each other, and the secondary partition members are arranged in the secondary transport paths, even if the opening end for filling the packaged goods is located on the opposite side, where the volume is lower, rather than on the zipper side, where the volume is higher, the orientation of the packaging bag can be easily changed to accommodate this. [Brief explanation of the drawing]

[0012] [Figure 1] It is a perspective view showing an outline of the configuration of a packaging bag stocker according to the first embodiment. [Figure 2] It is a plan view showing an outline of the configuration of a packaging bag stocker according to the first embodiment. [Figure 3] It is a cross-sectional view taken along the line A-A in FIG. 2 in a longitudinal sectional view to show an outline of the configuration of a packaging bag stocker according to the first embodiment. [Figure 4] It is a side view showing an outline of the overall configuration of a bag feeding device to which the packaging bag stocker according to the first embodiment is applied. [Figure 5] It is an explanatory view showing an example of a packaging bag stored in the packaging bag stocker according to the first embodiment. [Figure 6] It is an explanatory view showing another example of a packaging bag stored in the packaging bag stocker according to the first embodiment. [Figure 7] It is an explanatory view showing an outline of a state in which the packaging bag bundle shown in FIG. 5 is stored in a conventional packaging bag stocker.

Example 1

[0013] An embodiment of a packaging bag stocker according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing an outline of the configuration of the packaging bag stocker according to the present embodiment.

[0014] As shown in FIG. 1, the packaging bag stocker 10 is composed of a stocker body 11, a bag feeding mechanism 12, and a bag leveling mechanism 13. As shown in FIG. 1 or FIG. 3, the stocker body 11 has four vertical wall surfaces erected so as to surround the periphery of the packaging bag B that is rectangular in plan view. On one open end face located above, there is a supply port 14 through which the packaging bag B is supplied, and on the open end face located below, there is a carry-out port 15 through which the packaging bag B is carried out. From the supply port 14 to the middle of the stocker body 11, there is a stock room 16 where a plurality of bundles of packaging bags are stocked, and near the carry-out port 15, there is a carry-out room 17 where the carried-out bundle of packaging bags is set.

[0015] As shown in Figure 3, an unloading conveyor 50 is positioned below the unloading outlet 14, and the bundles of packaging bags set in the unloading room 17 are unloaded by the unloading conveyor in order from the bottommost packaging bag. As shown in Figure 4, the unloading conveyor 50 forms part of the unloading path 50a, which is folded back so that the top and bottom of the packaging bags can be reversed. At the end of the unloading path 50a, the packaging bags are supplied from a bag feeding device (not shown) to a packaging machine (not shown). As shown in Figure 2, the storage unit body 11 has four walls that surround the periphery of the packaging bag B. Here, the wall on the side from which the discharge conveyor 50 discharges the packaging bag is designated as the first surface 11a, and the walls are designated as the second surface 11b, third surface 11c, and fourth surface 11d in a clockwise direction when viewed from above. In this embodiment, the storage unit body 11 is constructed in a box shape by fixing each wall surface 11a, 11b, 11c, and 11d, as shown in Figure 2. However, it is not limited to this configuration, and each wall surface 11a, 11b, 11c, and 11d may be configured to move toward and away from each other, and the width between each wall surface 11a, 11b, 11c, and 11d may be changed to match the size of the packaging bag. Furthermore, although the stocker body 11 in this embodiment has a wall surface erected on the discharge conveyor 50 as shown in Figure 1 or Figure 3, it is not limited to this, and the stocker body can be installed in accordance with the inclination of the discharge conveyor 50. Here, "in accordance with the inclination of the discharge conveyor 50" means that when the discharge conveyor 50 is installed at an angle, the stocker body 11 can be installed at an angle to match that angle, or when the discharge conveyor 50 is arranged vertically, and the surface of the discharge conveyor is partitioned with rails or the like, and one packaging bag can be discharged from each partition, the stocker body 11 can be installed horizontally in order to discharge the packaging bags B vertically.

[0016] As shown in Figure 1 or Figure 3, the bag feeding mechanism 12 is installed in the stockroom 16 and consists of a main transport path 12A provided on the first surface 11a of the stocker body 11 and a secondary transport path 12B provided on the third surface 11c facing the first surface 11a.

[0017] As shown in Figure 1, the main conveying path 12A consists of a main conveyor, a first main roller 24 equipped with a first power source 23, and a first subordinate roller that moves in accordance with the first main roller 24. The main conveyor consists of a main conveyor 20, which is made of a belt stretched with a predetermined tension between a first main roller 24 and a first secondary roller, and has a plurality of main partition members 22 arranged at predetermined intervals, and a pair of sub-conveyors 21, 21 arranged on both sides of the main conveyor 20.

[0018] The main partition member 22 of the main conveyor 20 is made of a flat plate, and the flat plate is fixed such that its tip points inward towards the inside of the stocker body 11 and its base end forms a predetermined angle with respect to the main conveyor 20. As shown in Figure 3, the edges of the packaging bags are hooked onto the upper surface of the main partition member 22, allowing multiple packaging bags to be stored in bundles of a predetermined number. Since each of the multiple main partition members 22 arranged in the stockroom 16 can store bundles of packaging bags, as shown in Figure 3, the stocker body 11 can store a large quantity of bundles of packaging bags in the stockroom 16. Furthermore, the main partition member 22 is not limited to being fixed to the main conveyor 20, but may also be configured to move along the main transport path 12A and to collapse onto the main conveyor 20 when it moves around to the outside of the stocker body 11. Furthermore, although the main partition member 22 in this embodiment is made of a flat plate, it is not limited to this, and can be made of any shape that can support the bundle of packaging bags, such as a frame of a predetermined shape or a mesh-like plate. Moreover, the material of the main partition member 22 can be appropriately selected from wood, synthetic resin, metal, etc.

[0019] The sub-conveyor 21 is configured such that its belt surface is flush with the belt surface of the main conveyor 20 on the inside of the first surface 11a of the stocker body 11. This prevents the edges of the packaging bags from getting caught on the inside of the first surface 11a of the stocker body 11 due to friction, even if the bundles of packaging bags that are separated and stored by the main partition member 22 tilt toward the first surface 11a, allowing the bundles of packaging bags to be smoothly sent toward the discharge room 17. In this embodiment, the main conveyor 20 and sub-conveyors 21, 21 are made of flat belts, but are not limited to this; round belts or chains may be used instead of flat belts.

[0020] The first power source 23 is a motor whose output shaft rotates at a predetermined angular velocity. Alternatively, the first power source 23 may be a servo motor whose output shaft stops at predetermined angle intervals and repeats rotation and stopping at a predetermined period. Either the motor or the servo motor is configured to operate at the timing when the number of remaining packaging bags in the bundle of packaging bags being sequentially carried out in the discharge room 17 reaches a predetermined number, thereby sending in the bottom bundle of packaging bags from the stock room 16. This allows the packaging bags to be sent to the discharge room 17 without interrupting the rows of packaging bags lined up on the discharge conveyor 50.

[0021] As shown in Figure 1, the first main roller 24 is connected to the output shaft of the first power source 23 via a first pulley 23a and a first interlocking belt 23b. The first main roller 24 has rollers that drive the main conveyor 20 and rollers that drive the sub-conveyors 21, 21, all mounted coaxially. This allows the first main roller 24 to drive the main conveyor 20 and the sub-conveyors 21, 21 in a synchronous manner. The first subordinate roller, together with the first main roller 24, is configured to support the main conveyor 20 and the sub-conveyors 21, 21, and to move in accordance with the rotation of the first main roller 24. This allows the main conveyor 20 and the sub-conveyors 21, 21 to be tensioned and driven between the first main roller 24 and the first subordinate roller with a predetermined tension.

[0022] As shown in Figure 1, the secondary conveying path 12B consists of a secondary conveyor 30 positioned opposite the main conveyor 20 of the main conveying path 12A on the first surface 11a on the third surface 11c, and a pair of secondary rollers 31, 31 that support the secondary conveyor 30. The sub-conveyor 30 consists of a belt similar to that of the main conveyor 20 of the main transport path 12A, and multiple sub-partition members 32 are arranged at predetermined intervals, the same as the main partition members 22 of the main conveyor 20. The sub-partition member 32 is made of the same plate material as the main partition member 22, and the flat plate is fixed such that its tip faces inward towards the inside of the stocker body 11 and its base end forms a predetermined angle with respect to the sub-conveyor 30. As shown in Figure 3, the edges of the packaging bags are hooked onto the upper surface of the sub-partition member 32, allowing it to work in cooperation with the main partition member 22 to separate and store multiple packaging bags in bundles of a predetermined number. Since each of the multiple sub-partition members 32 arranged in the stockroom 16 can store bundles of packaging bags, as shown in Figure 3, the stocker body 11 can store a large quantity of bundles of packaging bags in the stockroom 16. Furthermore, the sub-partition member 32 is not limited to being fixed to the sub-conveyor 30, but may also be configured to move along the sub-transport path 12B and to collapse onto the sub-conveyor 30 when it moves around to the outside of the stocker body 11. Furthermore, the sub-partition member 32 in this embodiment is not limited to a flat plate, just like the main partition member 22. It can be any shape that can support the bundle of packaging bags, such as a frame of a predetermined shape or a mesh-like plate. Moreover, the material of the sub-partition member 32 can be appropriately selected from wood, synthetic resin, metal, etc.

[0023] The auxiliary rollers 31, 31 are positioned such that one auxiliary roller 31 is located near the upper end of the stocker body 11, and the other auxiliary roller 31 is located near the lower end of the stockroom 16, and the auxiliary conveyor 30 is installed between them. This allows the auxiliary conveyor 30 to be stretched between the auxiliary rollers 31, 31 with a predetermined tension. As shown in Figure 1 or Figure 3, neither of the sub-rollers 31, 31 is connected to a power source. However, even without a power source connected to the sub-roller 31, as shown in Figure 3, the sub-partition member 32 is configured to support the bundle of packaging bags together with the opposing main partition member 22, so that the sub-conveyor 30 of the sub-conveyor path 12B and the main conveyor 20 of the main conveyor path 12A can be operated in sync, and the bundle of packaging bags can be transported. Alternatively, one or both of the sub-rollers 31, 31 may be provided with a predetermined brake mechanism to prevent the bundle of packaging bags from being sent downwards before the main conveyor path 12A. In this way, the secondary transport path 12B can eliminate the power source, thus achieving power savings, further reducing the weight of the device, and lowering costs by eliminating the number of parts such as link mechanisms and manufacturing processes.

[0024] As shown in Figure 1 or Figure 3, the bag leveling mechanism 13 is provided near the outlet 15 of the discharge room 17 and consists of a leveling belt 40 for leveling the bundles of packaging bags stored in the discharge room 17, a second main roller 41 equipped with a second power source 43 for driving the leveling belt 40, and a second subordinate roller 42 that is driven by the second main roller 41.

[0025] The leveling belt 40 consists of multiple round belts installed between the second main roller 41 and the second sub-roller 42. The round belts reduce the contact area near the edges of the packaging bags, thus preventing the ink printed on the packaging bags from rubbing off. The leveling belt 40 and the surface of the discharge conveyor 50 form an outlet 15 that tapers towards the discharge direction, as shown in Figure 3. As the leveling belt 40 and the discharge conveyor 50 move together toward the outlet 15, the bundles of packaging bags stacked in the discharge room 17 can be transformed into a series of packaging bags in which parts of the packaging bags to be pulled out later overlap the packaging bags that have been pulled out earlier, and then pulled out sequentially.

[0026] The second main roller 41 is equipped with a second power source 43 consisting of a motor, and is connected to the second pulley 43a and second interlocking belt 43b, which are pivotally supported on the output shaft of the second power source 43. The second sub-roller 42 is connected to the second main roller 41 via the leveling belt 40 and is configured to move in accordance with the rotation of the second main roller 41. When the second power source 43 is driven and power is transmitted to the second main roller 41, the bag leveling mechanism 13 operates with the power transmitted to the leveling belt 40, which works in cooperation with the discharge conveyor 50 below the discharge room 17 to level the bundle of packaging bags and push each individual packaging bag toward the discharge port 15. In this way, the bag leveling mechanism 13 levels the bundle of packaging bags stacked in the discharge room 17, making it easy to discharge, and forms a row of packaging bags in which later packaging bags are pulled out on top of packaging bags that have been pulled out earlier by the discharge conveyor 50.

[0027] The packaging bag stocker 10 having the above configuration operates as follows, as will be explained with reference to the attached drawings.

[0028] As shown in Figure 3, the packaging bag stocker 10 sequentially supplies bundles of packaging bags from the supply port 14 of the stocker body 11 to the stockroom 16, which is divided into sections by a main partition member 22 and a sub-partition member 32. In this embodiment, the packaging bags stocked in the packaging bag stocker 10 are stand-up pouches B1 with a zipper C as shown in Figure 5. Since the opening end for filling the packaging material is located on the bag opening side OP1 where the zipper C is provided, the stand-up pouches B1 are stocked with the bag opening OP1 facing the outlet 15. As a result, when the packaging bags are supplied to the packaging machine via the bag feeding device, the opening end faces upward, allowing the material to be filled into the bag from above. Furthermore, when using the flat bag B2 with zipper C shown in Figure 6, when the bags are stored, the zipper C on the opening side of the bag is closed and the bottom of the bag becomes the open end OP2, so the orientation of the packaging bag is reversed, and the side that is bulkier becomes the third side 11c side of the stockroom 16. Even when using the flat bag B2 in this way, the bundle of packaging bags can be supported between the main partition member 22 and the sub-partition member 21, and multiple partition members can partition and hold the bundles of packaging bags made of flat bags B2 in the stockroom 16, one bundle at a time.

[0029] The bag feeding mechanism 12 uses a main transport path 12A and a secondary transport path 12B to work together at a predetermined interval to supply the bundle of packaging bags at the bottom of the stockroom 16 shown in Figure 3 to the discharge room 17. The bundle of packaging bags supplied to the discharge room 17 is then discharged one by one from the discharge port 15 of the stocker body 11, starting with the bottommost bag on the discharge conveyor 50. At this time, the surface of the discharge conveyor 50 has greater friction than the underside of the next packaging bag stacked on top of the discharged packaging bag. Therefore, the bottommost packaging bag is pulled out from the discharge port 15 by the discharge conveyor 50. When the bottommost packaging bag has been pulled out to a certain extent, the underside of the next packaging bag comes into contact with the surface of the discharge conveyor 50. As a result, the bottommost packaging bag and the packaging bags stacked on top of it are pulled out onto the discharge conveyor 50 in a row resembling sashimi served on a plate, while still overlapping. If a large number of packaging bags are dropped into the discharge room 17, the bags that are sequentially pulled out will be stacked on top of the bags below, potentially causing them to clump together and block the discharge port 15. However, in this embodiment, the number of packaging bag bundles dropped into the discharge room 17 can be controlled by the main partition member 22 and the sub-partition member 32 of the bag feeding mechanism 12. Furthermore, even if the packaging bag bundles fall towards the discharge port 15 in a clump, the bag leveling mechanism 13 can shift each stacked packaging bag bundle one by one to facilitate discharge and send them to the discharge port 15. As a result, a row of packaging bags, overlapping appropriately like slices of sashimi and formed in a line, is discharged from the discharge port 15.

[0030] As shown in Figure 4, the discharge conveyor 50 forms part of the discharge channel 50a, which is folded so that the top and bottom of the packaging bags can be reversed. As shown in Figure 3, the row of packaging bags pulled out from the outlet 15 has the bottom front portion of the packaging bag that is pulled out later overlapping the top rear portion of the packaging bag that was pulled out earlier. By folding this row of packaging bags in the discharge channel 50a, it can be reversed into a row of packaging bags where the top front portion of the packaging bag that is pulled out later overlaps the bottom rear portion of the packaging bag that was pulled out earlier. When the row of packaging bags is reversed in this way, when the bag feeding device picks up the packaging bags in order at the end of the discharge channel 50a and feeds them to the packaging machine, the bags can be fed in order from the top of the row of packaging bags. This prevents the printed text from being smudged due to overlapping packaging bags rubbing against each other, and also prevents the packaging bags from sticking together due to static electricity when feeding earlier bags, thus preventing the row of packaging bags from becoming disordered.

[0031] In the packaging bag stocker 10 according to this embodiment, the main partition member 22 and the sub-partition member 32 are used to partition and hold the bundles of packaging bags in the stock room 16. This makes it possible to suppress the tilting of the bundles of packaging bags when stocking a large number of them. Furthermore, multiple bundles of packaging bags, separated within the stocker body 11, are stacked and held in place. This reduces the installation space required relative to the number of bags in stock compared to simply forming rows of packaging bags on the discharge path 50a, and consequently allows for a more compact packaging machine. Furthermore, stacking the packaging bags inside the stocker body 11 allows for easier increases in stock capacity and lowers the cost per unit of stock compared to forming a row of packaging bags on the discharge path 50a.

[0032] Furthermore, in the conventional method of forming a row of packaging bags on the discharge path 50a, a new row of packaging bags must be supplied so that it partially overlaps with the last packaging bag in the row of packaging bags being sent to the packaging machine, thereby enabling continuous supply by the bag feeding device. To achieve this, a new bundle of packaging bags must be placed on top of the last packaging bag, and the bundle of packaging bags must be supplied by pulling it backward along the discharge path 50a. In other words, in the row of packaging bags laid out on the discharge path 50a, the lower front portion of the packaging bag to be drawn later overlaps the upper back portion of the packaging bag to be drawn earlier. This increases the risk of the packaging bags rubbing against each other, and if the row of packaging bags is not formed neatly, it will not be possible to supply them smoothly to the bag feeding device, thus increasing the burden on the workers. In contrast, with the packaging bag stocker 10 according to this embodiment, packaging bags can be fed in bundles from the supply port 14 of the stocker body 11, allowing rows of packaging bags to be pulled out from the discharge port 15. Furthermore, in combination with the discharge channel 50a equipped with a reversing mechanism, the burden on workers can be reduced. [Explanation of Symbols]

[0033] 10...Packaging bag dispenser, 11...Dispenser body, 11a...First side, 11b...Second side, 11c...Third side, 11d...Fourth side 12...Bag feeding mechanism, 13...Bag leveling mechanism, 14...Supply port, 15...Discharge port, 16...Stock room, 17...Discharge room 20...Main conveyor, 21...Sub conveyor, 22...Main partition member, 23...First power source, 23a...First pulley, 23b...First interlocking belt, 24...First main roller, 30...Sub-conveyor, 31...Sub-roller, 32...Sub-partition member, 40... leveling belt, 41... second main roller, 42... second auxiliary roller, 43... second power source, 43a... second pulley, 43b... second interlocking belt, 50...export belt, 50a...export route, C... Zipper, B1... Stand-up pouch, OP1... Opening end of stand-up pouch, B2... Flat bag, OP2... Opening end of flat bag 100...Bag-feeding conveyor, 100a...Starting point of the bag-feeding conveyor.

Claims

1. A stockroom equipped with walls on all four sides that surround bundles of packaging bags, each bundled in a predetermined number, where, when multiple bags are stacked with the same orientation, the bulk of one end edge is greater than the bulk of the other end edge. The stockroom is connected to an outlet on one open end side, which is equipped with a supply port for supplying the bundles of packaging bags in bundles, and to an outlet on the other open end side, which is equipped with an outlet for removing the packaging bags in a predetermined state. A packaging bag stocker that stores multiple bundles of packaging bags in the aforementioned stockroom, The packaging bag stocker is provided with a bag feeding mechanism that has a transport path for transporting the bundles of packaging bags one bundle at a time from the supply port to the discharge port. Multiple partition members are arranged at predetermined intervals along the transport path, The partition member is designed to separate and hold multiple bundles of the aforementioned packaging bags, one bundle at a time. A discharge conveyor is provided below the discharge room, having a surface that is stacked in the aforementioned bundle of packaging bags and has greater friction with the packaging bags than with each other. When the discharge conveyor discharges the packaging bags sequentially from the bottommost packaging bag in the bundle of packaging bags supplied to the discharge room, A packaging bag stocker characterized in that the packaging bags are discharged from the discharge outlet with the lower front portion of the packaging bag to be drawn later overlapping the upper rear portion of the packaging bag that was drawn first from the bundle of packaging bags.

2. The packaging bag stocker according to claim 1, characterized in that the transport path is configured to circulate between the supply port side and the discharge port side of the stockroom.

3. The packaging bag stocker according to claim 1, characterized in that the transport path comprises a main transport path equipped with a power source and a secondary transport path positioned opposite the main transport path with the packaging bag bundle in between.

4. The packaging bag stocker according to claim 3, characterized in that the partition member comprises a main partition member disposed in the main transport path and a secondary partition member disposed in the secondary transport path.

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