Packaging bag stocker

Abstract

To provide a packaging bag stocker in which the number of stored packaging bags is increased to achieve space-saving of an installation space of a packaging machine in a two dimensional manner, and which can be smoothly conveyed.SOLUTION: A packaging bag stocker comprises: one end side wall surface 12 facing one end side edge part which is not provided with a chuck C of a stand bag B1 with chuck; and a stocker body 11 provided with the other end side wall surface 13 facing the other end side edge part on the chuck C side. On the one end side wall surface 12, one end side stopper 15 is formed at a predetermined height along a width direction. Since the other end side of a packaging bag bundle 20 formed by piling up the stand bags from a bottom part of the stocker body and an upper surface side of the stand bag B1 bridged between with the one end side stopper are made nearly planar, the stand bags can be further piled up, and the number of the packaging bags stored in the stocker body can be increased.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a packaging bag stocker that stores a plurality of packaging bags that, when stacked in the same orientation, are bulkier at one end than at the other end. [Background technology]

[0002] 2. Description of the Related Art A packaging machine that conveys packaging bags along a predetermined packaging path and fills the packaging bags with packaged items to produce a packaged product has a bag feeder that supplies packaging bags to the packaging path. The bag feeding device has a bag feeding conveyor that lines up packaging bags in order from the start to the end. Near the end of the bag feeding conveyor, the packaging bags are attracted to a bag feeding arm with a suction cup at the tip and handed over to a gripper that moves along the packaging path. This allows the bag feeding device to feed the packaging bags to the packaging path. To easily increase the stock of packaging bags in a bag supply device, the bag supply conveyor can be simply extended to increase the number of packaging bags that can be lined up on it. However, extending the bag supply conveyor requires a larger space in addition to the packaging path, corresponding to the length of the bag supply conveyor. In response to this problem, by providing a packaging bag stocker that can store a plurality of packaging bags in a stack near the starting end of the bag supply conveyor, the packaging machine can be made compact.

[0003] As shown in Fig. 9, the packaging bag stocker has a box-shaped stocker body installed at starting end 100a of bag supply conveyor 100. Inside the stocker body, a plurality of packaging bags are stored in a stack with the same orientation. The packaging bags are then transported by bag supply conveyor 100 in order, starting with the bottommost bag. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] No quotes Summary of the Invention [Problem to be solved by the invention]

[0005] Here, in the case of flat bags in which the thickness of one sealed end of the packaging bag and the other open end are the same, even when the packaging bags are stacked and stored in a packaging bag stocker, the stacked packaging bags are unlikely to collapse, so there is no particular problem. However, when the packaging bags of a stand-up bag B1 with a zipper as shown in Fig. 2 or a flat bag B2 with a zipper as shown in Fig. 3 are stacked in the same orientation, the bulk of the side with the zipper is greater than the bulk of the side without the zipper C by the thickness of the zipper C. Fig. 9 is an explanatory diagram showing a state in which a plurality of stand-up bags B1 with a zipper are stacked. In this way, when a plurality of packaging bags with zippers are stacked, the stacked packaging bags tilt toward the side without the zipper C. This poses a problem in that the number of packaging bags that can be stored in the packaging bag stocker is reduced relative to its size. Furthermore, as shown in FIG. 9, when packaging bags are drawn out from the bottom end of a tilted stack of packaging bags by the bag feed conveyor, the stack of packaging bags may fall over inside the stocker body, causing the packaging bags to get caught or turn inside out at the discharge port, preventing smooth discharge and resulting in clogging or a large number of packaging bags spilling out of the discharge port all at once.

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

[0007] The packaging bag stocker according to claim 1 has a one-end wall surface erected opposite the one-end edge, and an other-end wall surface erected opposite the other-end edge, sandwiching a packaging bag whose other-end edge is larger than the one-end edge when a plurality of packaging bags are stacked in the same orientation, A supply port is provided at the top through which the packaging bags are supplied, and a discharge port is provided at the bottom through which the packaging bags can be removed, a packaging bag stocker configured to stack a predetermined number of packaging bags supplied from the supply port between the one end side wall surface and the other end side wall surface, and to sequentially transport the stacked packaging bags from the transport port toward a bag supply device in order starting from the lowest packaging bag, The one end wall surface is provided with a one end stopper that engages with the one end edge of the packaging bag.

[0008] The packaging bag stocker described in claim 2 is the invention described in claim 1, characterized in that another one-end stopper is provided either above or below the one-end stopper.

[0009] The packaging bag stocker according to claim 3 is the invention according to claim 1 or claim 2, wherein two or more one-end stoppers are provided at predetermined intervals on the one-end wall surface, At least one other end stopper is provided on the other end wall surface to engage with the other end edge of the packaging bag, The one end stopper and the other end stopper are arranged to face each other in a staggered manner.

[0010] The packaging bag stocker described in claim 4 is characterized in that, in the invention described in claim 1, an ejection guide is provided near the ejection outlet, and the side edge of the packaging bag being ejected is abutted against the ejection guide, causing the upper surface of the packaging bag to slide from the side edge. [Effects of the Invention]

[0011] According to the packaging bag stocker of the present invention, at least one one-end stopper is provided on the one-end wall surface opposite the one-end edge portion that becomes less bulky relative to the other end side of the packaging bag when multiple bags are stacked, and the one-end edge portion of the packaging bag is engaged with the one-end stopper. This allows the lower-bulk one-end edge of the stacked packaging bags to be lifted, and the height of the one-end edge and the other-end edge to be leveled, flattening the top surface of the stack of packaging bags and increasing the number of packaging bags that can be stored. In this way, the number of bags that can be stored in the packaging bag stocker can be increased, so the installation space for a packaging machine incorporating a bag supply device that includes the packaging bag stocker can be made compact, and the installation space can be significantly reduced compared to conventional packaging machines. Preferably, another one end stopper is provided above or below the one end stopper. As a result, the lower bulky one-end edge of the stacked packaging bags is lifted by the two one-end stoppers, so the bulk of the one-end edge and the other-end edge can be leveled to make the top surface of the stack of packaging bags flat, and the number of packaging bags that can be stored can be increased. Furthermore, preferably, at least one other-end stopper that engages with the other-end edge of the packaging bag is provided on the other-end wall surface opposite the one-end wall surface of the packaging bag stocker, and at least one other-end stopper is arranged between two or more one-end stoppers including one one-end stopper and the other one-end stopper, so that the one-end stoppers and the other end stoppers are arranged opposite each other in a staggered manner. As a result, the one-end stopper lifts the one-end edge of the stacked packaging bags, while the other-end stopper supports the other-end edge of the packaging bags to prevent them from sliding downward, so that the volume at one end and the other end can be made uniform, and in addition to being able to increase the number of packaging bags that can be stored, the other-end edge engages with the other-end stopper, allowing further packaging bag bundles to be stacked above the stacked packaging bags. Furthermore, preferably, a discharge guide is provided near the discharge outlet of the packaging bag stocker, which abuts against the side edge of the packaging bag being discharged and allows the upper surface of the packaging bag to slide from the side edge. This allows the carry-out guide to slide and separate the stacked packaging bags, preventing the stacked packaging bags from being carried out while still overlapping due to friction, or preventing the zipper part of one zippered packaging bag from getting caught on the raised zipper part of another packaging bag, causing the packaging bags to form a clump and become clogged near the carry-out port. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is an explanatory diagram showing an outline of the configuration of a packaging bag stocker according to a first embodiment. [Figure 2] 1 is an explanatory diagram showing an outline of the configuration of a stand-up bag with a zipper stocked in a packaging bag stocker according to a first embodiment.

[0022] FIG. [Figure 3] 1 is an explanatory diagram showing an outline of the configuration of a flat bag with a zipper stocked in a packaging bag stocker according to a first embodiment. FIG. [Figure 4] 1 is an explanatory cross-sectional view showing an outline of a state of stand-up bags with zippers stacked inside a stocker body in a packaging bag stocker according to a first embodiment. FIG. [Figure 5] 1 is an explanatory cross-sectional view showing an outline of the state of flat bags with zippers stacked inside a stocker body in a packaging bag stocker according to a first embodiment. FIG. [Figure 6] 10 is an explanatory cross-sectional view showing an outline of the state of zippered stand-up bags stacked inside the stocker body of the packaging bag stocker according to the second embodiment. FIG. [Figure 7] 10 is an explanatory cross-sectional view showing an outline of the state of zippered stand-up bags stacked inside the stocker body of the packaging bag stocker according to the third embodiment. FIG. [Figure 8] FIG. 10 is an explanatory diagram showing the outline of the configuration of a packaging bag stocker according to a fourth embodiment. [Figure 9] 1 is an explanatory cross-sectional view showing an outline of a state of stand-up bags with zippers stacked inside a stocker body 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.

[0014] As shown in Fig. 1, the packaging bag stocker 10 according to this embodiment has a stocker body 11. The stocker body 11 has a supply opening 11a at the top and a discharge opening 11b at the bottom. The packaging bag used in this embodiment is a stand-up bag B1 with a zipper as shown in FIG. 2 or a flat bag B2 with a zipper as shown in FIG. As shown in Fig. 2, the stand-up bag B1 with zipper has an opening OP1 at the top end on the zipper C side, through which the packaged item is placed. As shown in Fig. 3, the flat bag B2 with zipper has an opening OP2 at the bottom end on the side opposite the zipper C. When multiple bags are stacked, the stand-up bag B1 with zipper has a higher volume at the side edge where the zipper C is attached, and the flat bag B2 with zipper has a lower volume at the side edge where the zipper C is not attached, as shown in Fig. 4 and Fig. 5, respectively. Here, the opening OP1 provided in the stand-up bag B1 with a zipper is provided at the upper end of the packaging bag, and the opening OP2 provided in the flat bag B2 with a zipper is provided at the lower end of the packaging bag, so that they are upside down, and when the bag feeding device feeds the packaging bags to the packaging path of the packaging machine, the filling device for the packaged item that constitutes the packaging machine puts the packaged item into the opening of the packaging bag from above.Therefore, as shown in Figures 4 and 5, in the case of the stand-up bag B1 with a zipper, the up-down direction of the packaging bag is along the traveling direction of the bag feeding conveyor 100, and in the case of the flat bag B2 with a zipper, the up-down direction of the packaging bag is opposite to the traveling direction of the bag feeding conveyor 100. In this embodiment, the side edge of the packaging bag that becomes less bulky when the packaging bags are stacked will be referred to as the one end side edge, and the side edge of the packaging bag that becomes more bulky than the one end side edge will be referred to as the other end side edge. Furthermore, the present invention is not limited to the stand-up bag B1 with a zipper or the flat bag B2 with a zipper, but can also be applied to, for example, a stand-up bag that does not have a zipper C and has a bag bottom Bt that is boat-shaped in plan view due to the folded packaging material, or a flat bag that does not have a zipper C and has a bottom gusset due to the folded packaging material, because the volume of the packaging material on the lower side of the packaging bag increases when multiple sheets are stacked, and there is a risk that the bundle of packaging bags will tilt toward the upper side of the packaging bag, just like packaging bags with zippers.

[0015] 1, the stocker body 11 has a first end wall surface 12 facing one end edge of the chuck stand-up bag B1, and an second end wall surface 13 facing the other end edge of the chuck stand-up bag B1. The supply opening 11a is open so that the chuck stand-up bags B1 that are stacked in the same orientation can be supplied. The discharge opening 11b is configured so that the chuck stand-up bags B1 can be discharged one by one onto the bag supply conveyor 100. In this embodiment, the stocker body 11 has a pair of side walls 14 (one of the side walls 14 is omitted in Figure 1) connecting the one end wall surface 12 and the other end wall surface 13, and is exemplified as a hollow box-like body that matches the shape of a predetermined size of zippered stand-up bag B1. However, the shape of the stocker body 11 is not limited to this box-like body, and the side walls 14 may be formed into an accordion-like, expandable shape, for example, or the one end wall surface 12 and the other end wall surface 13 may be connected by an expandable slider, or the other end wall surface 13 may be configured to be able to move toward and away from the one end wall surface 12, so that the height or size of the zippered stand-up bag B1, etc., can be adjusted to match the size of the packaging bag.

[0016] 1, the one-end wall surface 12 has a one-end stopper 15. The one-end stopper 15 is made up of a protrusion formed across the width of the one-end wall surface 12, protruding to a predetermined height toward the edge of one end of the resealable stand-up bag B1, and the protrusion is made up of a semi-cylinder, which is formed by dividing a cylinder in half along the radial direction and fixing it to the one-end wall surface. The one-end stopper 15 is not limited to the above-mentioned protrusion, but may have any shape that protrudes from the one-end wall surface to an extent that it engages with the one-end edge of the stacked packaging bags. That is, in this embodiment, the one-end stopper 15 is exemplified as a protrusion that engages with the entire one-end edge, but the shape of the one-end stopper is not limited to this protrusion, and it may be formed with at least one or more convex portions that engage with predetermined positions on the one-end edge. Furthermore, the one-end stopper 15 is not limited to being configured as a protrusion or convex portion protruding from the one-end wall surface 12 toward the one-end edge of the zippered stand bag B1, as described above, but may also be configured by cutting out or recessing a portion of the one-end wall surface 12 in a groove shape so that the one-end edge of the zippered stand bag B1 can engage with it. As a result, when stacked resealable stand bags B1 are fed into the stocker main body 11 from the upper supply port 11a, one end edge of the resealable stand bags B1 engages with the one end stopper 15 and stops partway along the one end wall surface 12, while the other end edge of the resealable stand bags B1 that does not engage with the one end stopper 15 and falls down becomes stacked, and as shown in Figure 1 or Figure 4, the one end edge of the resealable stand bags B1 engaged with the one end stopper 15 and the stacked other end edge lift the resealable stand bags B1, making the top surface flat. Therefore, even when packaging bags that have different thicknesses near one end edge and near the other end edge due to the zipper, such as the resealable stand bag B1, are stacked, the top surfaces of the stacked packaging bags do not tilt toward the one end edge where the volume is lower, so that more packaging bags can be stacked and the number of packaging bags that can be stocked in the stocker main body 11 can be increased.

[0017] As shown in FIG. 1 or 4, the other end wall surface 13 is formed with a flap portion 16 that protrudes from the carry-out opening 11b along the feeding direction of the zippered stand-up bags B1. A bag supply conveyor 100 is installed below the carry-out port 11b. The bag supply conveyor 100 is positioned so that its starting end 100a is near the stocker main body 11 and its terminal end (not shown) is the bag supply device. This allows the resealable stand-up bags B1 transported from the starting end 100a to be fed from a bag transfer section provided in the bag supply device at the terminal end onto a packaging path formed in the packaging machine. The flap portion 16 is configured to come into contact with the other end edge of the overlapped zippered stand-up bags B1 when the bag feed conveyor 100 pulls out the packaging bags stacked in a bundle in order from the bottom end and the overlapped zippered stand-up bags B1 move toward the bag feed device while remaining overlapped due to friction between the overlapped zippered stand-up bags B1. This allows the zippered stand-up bags B1 to be shifted at least one by one and the overlapping zippered stand-up bags B1 to be peeled off, so that the stack of zippered stand-up bags B1 can be carried out sequentially from the bottommost one toward the bag supply device. The above explanation is based on Fig. 4 using the resealable stand-up bag B1. Meanwhile, as shown in Fig. 2 and Fig. 3, the opening OP1 of the resealable stand-up bag B1 and the opening OP2 of the resealable flat bag B2 are positioned differently, and when stacked in a bundle, the sides that become bulkier are different. Therefore, as shown in Fig. 5, in the case of the resealable flat bag B2, the one-end wall surface 12 provided with the one-end stopper 15 and the other-end wall surface 13 are erected in positions opposite to those of the packaging bag stocker shown in Fig. 4, and the flap portion 16 is provided adjacent to the one-end wall surface 12 in accordance with the orientation of the packaging bag.

[0018] The method of using the packaging bag stocker 10 having the above-described configuration will be described below with reference to the accompanying drawings.

[0019] The packaging bag stocker is installed near the starting end 100a of the bag supply conveyor 100, as shown in FIG. On the bag supply conveyor 100, the resealable stand-up bags B1 carried out from the packaging bag stocker 10 are arranged with their openings OP1 facing the terminal end, and the edges of the openings OP1 side are slightly shifted while partially overlapping each other so that the vicinity of the openings OP1 can be easily transferred at the bag transfer section of the bag supply device. In this way, the resealable stand-up bags B1 transported to the vicinity of the terminal end of the bag supply conveyor 100 are gripped or sucked near the openings at the bag transfer section and transferred to a gripper circulating along the packaging path.

[0020] As shown in Fig. 4, when a plurality of resealable stand-up bags B1 stored in the packaging bag stocker are stacked to form a bundle of packaging bags, the bulk of the other end edge provided with the resealable bag C is greater than the bulk of the one end edge due to the thickness of the resealable bag C. Similarly, as shown in Fig. 5, when packaging bags are stored in a bundle of resealable flat bags B2, the bulk of the other end edge provided with the resealable bag C is greater than the bulk of the one end edge due to the thickness of the resealable bag C. In either case, the packaging bag stocker 10 installed on the bag supply conveyor 100 has a flap portion 16 that projects from the wall surface facing the terminal end side of the bag supply conveyor 100. In this way, the packaging bag stocker 10 is installed on the bag supply conveyor 100 as shown in Figure 1, and stores a predetermined number of stacked resealable stand-up bags B1 in a bundle with the opening ends OP1 aligned. This allows the packaging bag stocker 10 to stock a large number of stacked resealable stand-up bags B1 in a bundle.

[0021] The stand-up bags with zippers B1 stocked inside the packaging bag stocker 10 are stacked in order from the bottom up, where the carry-out opening 11b is provided, as shown in FIG. Hereinafter, a bundle of resealable stand-up bags B1 stacked until the height of the other end edge of the resealable stand-up bags B1 reaches approximately the same height as the one-end stopper 15 will be referred to as the "packaging bag bundle 20." At this time, as shown in FIG. 4, the other end of the packaging bag bundle 20 is stacked at approximately the same height as the one-end stopper 15, so that a new resealable stand-up bag B1 to be stacked on top of the packaging bag bundle 20 is placed so that its top surface is approximately flat. When multiple stand-up bags B1 are stacked on top of the stand-up bag B1, the top surface is formed approximately flat, so that more resealable stand-up bags B1 can be stacked on top of the packaging bag bundle 20. This makes it easy to increase the number of resealable stand-up bags B1 that can be stocked in the packaging bag stocker 10.

[0022] 4, the packaging bag bundle 20 is sequentially removed from the bottommost resealable stand-up bag B1 by the bag feed conveyor 100 through the removal opening 11b and carried out. At this time, as the resealable stand-up bag B1 is removed from the bottommost end of the stocker main body 11, the bulk of the packaging bag bundle 20 decreases overall, and the bulk at the other end becomes even smaller. When the height of the other end becomes lower than a predetermined level, the resealable stand-up bag B1 that was stacked on top of the packaging bag bundle 20 and supported by the one-end stopper 15 and the other end of the packaging bag bundle 20 has its other end edge lowered to match the height of the other end of the packaging bag bundle 20. In this way, the other end edge of the resealable stand-up bag B1 that was spanning between the one-end stopper 15 and the other end of the packaging bag bundle 20 lowers, and when the stand-up bag B1 becomes slanted, the other stand-up bags B1 stacked on top of the stand-up bag B1 also become slanted in the same way, and the one end edge of the resealable stand-up bag B1 stacked on top of the packaging bag bundle 20 becomes more likely to disengage from the one-end stopper 15. At this time, when another zippered stand-up bag B1 is removed from the bottom, the multiple zippered stand-up bags B1 stacked on top of the packaging bag bundle 20 apply weight to the stand-up bag B1 engaged with the one-end stopper 15, causing the one-end edge of the stand-up bag B1 to slide off the one-end stopper 15, disengaging the one-end stopper 15 from the one-end edge, and the zippered stand-up bag B1 falls onto the packaging bag bundle 20. In this way, when more resealable stand-up bags B1 are supplied from above to the packaging bag bundle 20, whose volume at the other end has decreased, and they are stacked together so that the height of the other end of the packaging bag bundle 20 is approximately the same height as the one-end stopper 15, that is, when the newly supplied resealable stand-up bag B1 is placed on top of the packaging bag bundle 20 so that it is approximately flat, the resealable stand-up bags B1 stop falling and more resealable stand-up bags B1 can be stacked up. Furthermore, by providing the one-end stopper 15, it is possible to restrict the number of packaging bag bundles 20 stocked below the one-end stopper 15 to a substantially constant number. Therefore, when removing the resealable stand-up bags B1 from the bottom of the packaging bag bundle 20, the frictional force between the packaging bags acting on the bottommost resealable stand-up bag B1 due to the weight of the multiple stacked resealable stand-up bags B1 can be reduced compared to a packaging bag stocker 10 without the one-end stopper 15, so it is possible to prevent a large number of packaging bags from being conveyed out while overlapping each other near the discharge port 11b or from becoming clogged with packaging bags at the discharge port 11b. The above has been a description of stacking resealable stand-up bags B1, but the resealable flat bags B2 are similar in other respects except for the orientation of the packaging bags as shown in Figure 5, so a description thereof will be omitted.

[0023] The packaging bag stocker 10 according to this embodiment is configured so that a plurality of stand-up bags B1 with zippers or flat bags B2 with zippers are stacked in the stocker main body 11 to form a packaging bag bundle 20, and when the bulk of the other end edge where the zipper part is thick of the packaging bag bundle 20 becomes large, the one end edge where the bulk is low is lifted to form a substantially flat surface above the packaging bag bundle 20, and further packaging bags can be stacked. This improves the state in which the packaging bag bundle 20 tilts toward the one end side where the bulk is low, and further packaging bags can be stacked on top of the packaging bag bundle 20 to easily stock a large amount of packaging bags. Furthermore, by using the packaging bag stocker 10 according to this embodiment, packaging bags can be stacked vertically for storage, regardless of the length of the bag feed conveyor 100, which conventionally stocked multiple packaging bags side by side. This reduces the installation space for the packaging machine, making it possible to provide a compact, space-saving packaging machine. In addition, it is easy to incorporate into an existing packaging machine equipped with the bag feed conveyor 100, making it easy to increase the number of packaging bags stored. Example 2

[0024] Next, another embodiment of the packaging bag stocker will be described with reference to the accompanying drawings.

[0025] As shown in Fig. 6, the packaging bag stocker 10A according to the second embodiment has a supply opening 11a and a discharge opening 11b, similar to the packaging bag stocker 10 described in the first embodiment, and has a flap portion 16 below the other end wall surface 13. Also similar is the fact that a bag feed conveyor 100 is disposed below the discharge opening 11b. And, similar to the packaging bag stocker 10 described in the first embodiment, a one end stopper is provided at a predetermined position on the one end wall surface 12. In this embodiment, this one end stopper is referred to as a first one end stopper 15a. The difference between the packaging bag stocker 10A according to the second embodiment and the packaging bag stocker 10 according to the first embodiment is the presence or absence of a one-end second stopper 15b. As shown in Fig. 6, the one-end second stopper 15b is located at a predetermined position above the one-end first stopper 15a provided on the one-end wall surface 12 of the stocker main body 11, and is composed of a protrusion that protrudes across the width of the one-end wall surface 12 toward the one-end edge of the resealable stand-up bag B1. Like the one-end stopper 15 according to the first embodiment, the one-end second stopper 15b according to this embodiment is not limited to the above-described protrusion, but may have any shape that protrudes from the one-end wall surface to an extent that it engages with the one-end edge of the stacked resealable stand-up bags B1. That is, in this embodiment, the one-end first stopper 15a and the one-end second stopper 15b are exemplified as protrusions that engage with the entire one-end edge, but the shape of the one-end stoppers 15a, 15b is not limited to this protrusion, and they may have at least one or more convex portions that engage with predetermined positions on the one-end edge. Furthermore, the one-end stoppers 15a, 15b are not limited to being configured to protrude from the one-end wall surface 12 toward the one-end edge portion of the zippered stand bag B1 like the above-mentioned protrusions or convex portions, but may also be configured to have a groove-shaped notch or recess in a portion of the one-end wall surface 12 so that the one-end edge portion of the zippered stand bag B1 engages with it. As a result, when stacked resealable stand bags B1 are fed into the stocker body 11 from the upper supply port 11a, one end edge of the resealable stand bags B1 engages with the one end stoppers 15a, 15b and stops halfway on the one end wall surface 12, while the other end edge of the resealable stand bags B1 that does not engage with the one end stoppers 15a, 15b and falls down becomes stacked, and as shown in Figure 6, the one end edge of the resealable stand bags B1 engaged with the one end stoppers 15a, 15b and the stacked other end edge lift the resealable stand bags B1, making the top surface flat. Therefore, even when packaging bags having different thicknesses near one end edge and near the other end edge due to the zipper, such as the zippered stand-up bag B1, the top surfaces of the stacked packaging bags do not tilt toward the lower end edge as shown in Figure 9, so more packaging bags can be stacked and the number of packaging bags that can be stocked in the stocker main body 11 can be increased.

[0026] How to use the packaging bag stocker 10A having the above-described configuration will be described below with reference to the accompanying drawings.

[0027] 6, the packaging bag stocker 10A is installed on the bag supply conveyor 100 in the same manner as in the first embodiment, so a description thereof will be omitted. When a plurality of resealable stand-up bags B1 stored in the packaging bag stocker 10A are stacked to form a bundle of resealable stand-up bags B1 as shown in FIG. 6, the bulk of the other end edge portion equipped with the resealable stand-up bags B1 is greater than the bulk of the one end edge portion due to the thickness of the resealable stand-up bags C. Packaging bag stocker 10A installed on bag supply conveyor 100 has flap portion 16 protruding from the wall surface facing the terminal end side of bag supply conveyor 100. In this way, the packaging bag stocker 10 is placed on the bag supply conveyor 100 as shown in Fig. 6, and stores a predetermined number of stacked resealable stand-up bags B1 in a bundle with the opening ends OP1 aligned. This allows the packaging bag stocker 10A to stock a large number of stacked resealable stand-up bags B1 in a bundle.

[0028] The stand-up bags B1 with zippers stocked inside the packaging bag stocker 10A are stacked in order from the bottom up, at the area with the carry-out opening 11b, as shown in FIG. Hereinafter, the bundle of resealable stand-up bags B1 stacked until the height of the other end edge of the resealable stand-up bags B1 reaches approximately the same height as the one-end first stopper 15a will be referred to as the "first packaging bag bundle 20a." At this time, as shown in FIG. 6, the other end of the first packaging bag bundle 20a is stacked to approximately the same height as the one-end first stopper 15a, so the resealable stand-up bag B1 newly stacked on the first packaging bag bundle 20a is placed so that its top surface is approximately flat. When multiple stand-up bags B1 are stacked on top of the stand-up bag B1, the top surface is formed approximately flat, so more resealable stand-up bags B1 can be stacked on top of the first packaging bag bundle 20a. Furthermore, a bundle of resealable stand-up bags B1 stacked until the height of the other end edge of the resealable stand-up bags B1 reaches approximately the same height as the one-end second stopper 15b will be referred to as the "second packaging bag bundle 20b." At this time, as shown in Figure 6, the other end of the second packaging bag bundle 20b is stacked to approximately the same height as the one-end second stopper 15b, so the resealable stand-up bag B1 newly stacked on the second packaging bag bundle 20b is placed so that its top surface is approximately flat. When multiple stand-up bags B1 are stacked on top of the stand-up bag B1, the top surface is formed approximately flat, so more resealable stand-up bags B1 can be stacked on top of the first packaging bag bundle 20a. This makes it possible to easily increase the number of stand-up bags with zippers B1 that can be stocked in the packaging bag stocker 10.

[0029] 6, the first packaging bag bundle 20a is sequentially removed from the discharge port 11b by the bag feed conveyor 100, starting with the lowest resealable stand-up bag B1, and carried out. At this time, as the resealable stand-up bags B1 are removed from the lowest end of the stocker main body 11, the bulk of the first packaging bag bundle 20a decreases overall, and the bulk at the other end becomes even smaller. When the height of the other end becomes lower than a predetermined level, the resealable stand-up bag B1 at the bottom of the second packaging bag bundle 20b, which was stacked on top of the first packaging bag bundle 20a and supported by the one-end first stopper 15a and the other end of the first packaging bag bundle 20a, has its other end edge lowered to match the height of the other end of the first packaging bag bundle 20a. In this way, the other end edge of the resealable stand-up bag B1 of the second packaging bag bundle 20b, which was bridged between the one-end first stopper 15a and the other end of the first packaging bag bundle 20a, lowers and the stand-up bag B1 becomes slanted, and the second packaging bag bundle 20b stacked on top of the stand-up bag B1 also becomes slanted in the same way, and the one end edge of the resealable stand-up bag B1 stacked on top of the first packaging bag bundle 20a becomes more likely to disengage from the one-end stopper 15. At this time, when another zippered stand-up bag B1 is removed from the bottom, the zippered stand-up bag B1 of the second packaging bag bundle 20b stacked on top of the first packaging bag bundle 20a applies weight to the stand-up bag B1 engaged with the one-end first stopper 15a, causing the one-end edge of the stand-up bag B1 to slide off the one-end first stopper 15a, disengaging the one-end first stopper 15a from the one-end edge, and the zippered stand-up bag B1 falls onto the first packaging bag bundle 20a. Similarly, with respect to the resealable stand-up bag B1 stacked on top of the second packaging bag bundle 20b, weight is applied to the stand-up bag B1 engaged with the one-end second stopper 15b, causing the one-end edge of the stand-up bag B1 to slide off the one-end second stopper 15b, disengaging the one-end edge from the one-end second stopper 15b, and the resealable stand-up bag B1 falls onto the second packaging bag bundle 20b. In this way, when more resealable stand-up bags B1 are supplied from above to the first packaging bag bundle 20a or the second packaging bag bundle 20b, whose volume at the other end has decreased, and they are stacked together so that the height of the other end of the first packaging bag bundle 20a or the second packaging bag bundle 20b becomes approximately the same height as the one-end first stopper 15a or the one-end second stopper 15b, in other words, when the newly supplied resealable stand-up bags B1 are placed on top of the packaging bag bundles 20a, 20b so that they are approximately flat, the resealable stand-up bags B1 stop falling and more resealable stand-up bags B1 can be stacked up. Furthermore, the one-end stoppers 15a, 15b can restrict the number of first packaging bag bundles 20a stocked below the one-end first stopper 15a to a substantially constant number. Therefore, when removing the resealable stand-up bags B1 from the first packaging bag bundle 20a in order from the bottom, the frictional force between the packaging bags acting on the bottommost resealable stand-up bag B1 due to the weight of the multiple stacked resealable stand-up bags B1 can be reduced compared to a packaging bag stocker 10 without the one-end first stopper 15a, so it is possible to prevent a large number of packaging bags from being conveyed out while overlapping each other near the discharge port 11b or from becoming clogged with packaging bags at the discharge port 11b. The above has been an explanation of stacking zippered stand-up bags B1, but in the case of zippered flat bags B2, the only difference is the orientation of the packaging bags as shown in the first embodiment, and other aspects are the same, so explanation will be omitted.

[0030] The packaging bag stocker 10A according to this embodiment is configured so that a first packaging bag bundle 20a is formed by stacking a plurality of resealable stand-up bags B1 or resealable flat bags B2 inside the stocker main body 11, and when the bulk of the other end of the first packaging bag bundle 20a, where the resealable bags C are thick, the lower bulk end can be lifted to flatten the resealable packaging bags stacked above the first packaging bag bundle 20a, and then the second packaging bag bundle 20b can be stacked on top of it. This makes it possible to prevent the first packaging bag bundle 20a and the second packaging bag bundle 20b from tilting toward their lower bulk ends, and the second packaging bag bundle 20b can be easily stacked on top of the first packaging bag bundle 20a, and furthermore, resealable packaging bags can be stacked on top of the second packaging bag bundle 20b, making it easy to stock a large amount of packaging bags. Furthermore, by using the packaging bag stocker 10A according to this embodiment, packaging bags can be stacked vertically as a first packaging bag bundle 20a and a second packaging bag bundle 20b and stored, without relying on the length of the bag feed conveyor 100, which conventionally stocked multiple packaging bags side by side. This reduces the installation space for the packaging machine, making it possible to provide a compact, space-saving packaging machine. In addition, the packaging bag stocker 10A can be easily incorporated into an existing packaging machine equipped with the bag feed conveyor 100, making it easy to increase the number of packaging bags stored. Example 3

[0031] Further, another embodiment of the packaging bag stocker will be described with reference to the accompanying drawings.

[0032] 7, the packaging bag stocker 10B according to the third embodiment has a supply opening 11a and a discharge opening 11b, similar to the packaging bag stocker 10 described in the first embodiment, and has a flap portion 16 below the other end wall surface 13. Also similar is the fact that a bag feed conveyor 100 is disposed below the discharge opening 11b. And, similar to the packaging bag stocker 10A described in the second embodiment, a first one-end stopper 15a and a second one-end stopper 15b are provided at predetermined positions on the one end wall surface 12. Here, the difference from the first and second embodiments is that, as shown in Figure 7, the other end wall surface 13 of the stocker main body 11 is configured with an other end first stopper 25a and an other end second stopper 25b, which are protrusions that protrude to a predetermined height toward the other end edge of the zippered stand-up bag B1 across the width of the other end wall surface 13.

[0033] 7, the other-end first stopper 25a is disposed at a position facing the midpoint between the one-end first stopper 15a and the one-end second stopper 15b, and the distance between the other-end first stopper 25a and the other-end second stopper 25b is the same as the distance between the one-end first stopper 15a and the one-end second stopper 15b that are disposed opposite each other. As a result, the one-end stoppers 15a, 15b and the other-end stoppers 25a, 25b are disposed opposite each other so that the stoppers 15a, 15b, 25a, 25b are alternately arranged between the one-end wall surface 12 and the other-end wall surface 13 of the stocker main body 11 in the order from bottom to top, namely, the one-end first stopper 15a, the other-end first stopper 25a, the one-end second stopper 15b, and the other-end second stopper 25b.

[0034] The other-end first stopper 25a and the other-end second stopper 25b are configured by fixing a semi-cylinder, which is formed by dividing a cylinder in half along the radial direction, to the other-end wall surface 13, similar to the one-end first stopper 15a and the one-end second stopper 15b, but are not limited to this, and similar to the one-end first stopper 15a and the one-end second stopper 15b, they only need to protrude to an extent that they can engage with the other-end edge of the stacked zippered stand-up bags B1. In this embodiment, the entire edge of the other end is formed as a protrusion that engages, but this is not limited to this. As suggested in the first and second embodiments, it is also possible to form at least one or more convex portions that engage at predetermined positions on the edge of the other end, or to cut or recess the wall surface 13 of the other end into a groove shape so that the edge of the stand-up bag B1 with the zipper can engage with it. Furthermore, the present invention is not limited to the two one-end stoppers 15a, 15b and the two other-end stoppers 25a, 25b shown in this embodiment, and it is also possible to increase the number of protrusions and projections on the one-end wall surface 12 and the other-end wall surface 13 at a predetermined interval.

[0035] The method of using the packaging bag stocker 10B having the above-described configuration will be described below with reference to the accompanying drawings.

[0036] 7, the packaging bag stocker 10B is installed on the bag supply conveyor 100 in the same manner as in the first and second embodiments, so a description thereof will be omitted. As shown in Figure 7, when multiple stand-up bags B1 with zippers stored in the packaging bag stocker 10B are stacked in a bundle with the same orientation, the volume of the other end equipped with the zipper C is greater than the volume of the one end by the thickness of the zipper C of the other stand-up bags B1 stacked above and below. A bran ramp portion 16 is provided below the other end wall surface 13 so as to project toward the terminal end of the bag supply conveyor 100, and a stand-up bag B1 with a zipper is pulled out from the flap portion 16. In this way, the packaging bag stocker 10B is installed on the bag supply conveyor 100 as shown in Fig. 7, and stores a bundle of a predetermined number of resealable stand-up bags B1 stacked one on top of the other with the opening ends OP1 oriented in the same direction. This allows the packaging bag stocker 10B to stock a bundle of resealable stand-up bags stacked one on top of the other.

[0037] The stand-up bags with zippers B1 stocked inside the packaging bag stocker 10B are stacked in order from the bottom up, where the carry-out opening 11b is provided, as shown in FIG. Here, when the height of the other end side of the resealable stand-up bag B1 reaches approximately the same height as the first stopper 15a on one end side, the stacked bundle of packaging bags is hereinafter referred to as the first packaging bag bundle 20a, and when another resealable stand-up bag B1 is stacked on top of the first packaging bag bundle 20a and the height of the other end side of the stand-up bag B1 reaches approximately the same height as the second stopper 15b on one end side, the stacked bundle of packaging bags is hereinafter referred to as the second packaging bag bundle 20b, and the bundle of packaging bags further stacked on top of the second packaging bag bundle is hereinafter referred to as the third packaging bag bundle 20c. 7, one end of the first packaging bag bundle 20a is lifted by the one-end first stopper 15a, and the other end is piled up to approximately the same height as the one-end first stopper 15a, so that the stand-up bag B1 at the bottom of the second packaging bag bundle 20b is bridged between the one-end first stopper 15a and the other end of the first packaging bag bundle 20a, forming an approximately flat top surface.Furthermore, in the second packaging bag bundle 20b, the stand-up bag B1 at the bottom of the third packaging bag bundle 20c is similarly bridged between the one-end second stopper 15b and the other end of the second packaging bag bundle 20b, forming an approximately flat top surface. In this way, the resealable stand-up bags B1 placed on the upper surface of each of the packaging bag bundles 20a, 20b, 20c form a substantially flat surface, so that the second packaging bag bundle 20b can be stacked on top of the first packaging bag bundle 20a, the third packaging bag bundle 20c on top of the second packaging bag bundle 20b, and the resealable stand-up bags B1 on top of the third packaging bag bundle 20c, thereby increasing the number of packaging bags that can be stocked in the packaging bag stocker 10B.

[0038] The other end first stopper 25a divides the other end side of the second packaging bag bundle 20b into two, and the other end second stopper 25b divides the other end side of the third packaging bag bundle 20c into two. Here, for example, as shown in the second embodiment, when the one end stoppers 15a, 15b are installed only on the one end wall surface 12, if the packaging material of the resealable stand bags B1 constituting the first packaging bag bundle 20a and the second packaging bag bundle 20b is relatively hard and difficult to bend, even if the resealable stand bags B1 are removed in order from the bottom end of the first packaging bag bundle 20a, the resealable stand bags B1 at the bottom end of the second packaging bag bundle 20b will not easily fall onto the first packaging bag 20a because the resealable stand bags will not bend, and a space will be created below the one end first stopper 15a, making it impossible to pull out the resealable stand bags B1 from the discharge opening 11b at the specified intervals, or the resealable stand bags will fall downward in a bundle-like clump into the created space. In such a case, by arranging the other end stoppers 25a, 25b on the other end wall surface 13 to separate the other end sides of the second packaging bag bundle 20b and the third packaging bag bundle 2c, and by arranging the one end stoppers 15a, 15b and the other end stoppers 25a, 25b alternately facing the one end wall surface 12 and the other end wall surface 13, the zippered stand-up bag B1 constituting the second packaging bag bundle 20b or the third packaging bag bundle 20c is bridged diagonally between the one end wall surface 12 and the other end wall surface 13 of the stopper body 11, and the one end edge of the zippered stand-up bag B1 is easily disengaged from the one end stoppers 15a, 15b. As a result, when the weight of the resealable stand-up bags B1 stacked on each of the packaging bag bundles 20a, 20b, 20c causes the resealable stand-up bags B1 that are diagonally suspended between the one-end stoppers 15a, 15b and the other-end stoppers 25a, 25b to bend even slightly, the resealable stand-up bags B1 can slide toward the one-end wall surface 12 or the other-end wall surface 13, making it easier to disengage from the stoppers 15a, 15b, 25a, 25b. Therefore, even when, for example, not only flexible packaging bags but also harder, less flexible packaging bags are stored in the stocker main body 11, the stacked packaging bags can be easily dropped down without hindrance.

[0039] 7, the first packaging bag bundle 20a is successively removed from the discharge port 11b by the bag feed conveyor 100, starting with the lowest resealable stand-up bag B1, and carried out. At this time, as the resealable stand-up bags B1 are removed from the lowest end of the stocker main body 11, the bulk of the first packaging bag bundle 20a decreases overall, and the bulk at the other end becomes even smaller. When the height of the other end becomes lower than a predetermined level, the resealable stand-up bag B1 at the bottom of the second packaging bag bundle 20b, which was stacked on top of the first packaging bag bundle 20a and supported by the one-end first stopper 15a and the other end of the first packaging bag bundle 20a, has its other end edge lowered to match the height of the other end of the first packaging bag bundle 20a. In this way, the other end edge of the resealable stand-up bag B1 of the second packaging bag bundle 20b, which was bridged between the one-end first stopper 15a and the other end of the first packaging bag bundle 20a, lowers and the stand-up bag B1 becomes slanted, and the second packaging bag bundle 20b stacked on top of the stand-up bag B1 also becomes slanted in the same way, and the one end edge of the resealable stand-up bag B1 stacked on top of the first packaging bag bundle 20a becomes more likely to disengage from the one-end stopper 15. At this time, when another zippered stand-up bag B1 is removed from the bottom, the zippered stand-up bag B1 of the second packaging bag bundle 20b stacked on top of the first packaging bag bundle 20a applies weight to the stand-up bag B1 engaged with the one-end first stopper 15a, causing the one-end edge of the stand-up bag B1 to slide off the one-end first stopper 15a, disengaging the one-end first stopper 15a from the one-end edge, and the zippered stand-up bag B1 falls onto the first packaging bag bundle 20a. Furthermore, the zippered stand-up bag B1 of the second packaging bag bundle 20b, which was diagonally suspended between the other end side first stopper 25a and the one end side first stopper 15a, slides toward the one end side wall surface 12 and bends and falls due to the weight from above, as a space is created on the other end side of the second packaging bag bundle 20b, and falls one after another to fill the space created on the other end side of the second packaging bag bundle 20b. This creates a space above the other-end first stopper 25a, and the resealable stand-up bags B1 in the upper half of the second packaging bag bundle 20b, which are diagonally spanned between the other-end first stopper 25a and the one-end second stopper 15b, slide toward the other-end first stopper 25a and bend and fall due to the weight from above, and resealable stand-up bags B1 are supplied from the third packaging bag bundle 20c until the other end side of the second packaging bag bundle 20b is approximately the same height as the one-end second stopper 15b, and the other end side of the second packaging bag bundle 20b and the one-end second stopper 15b support the top surface of the resealable stand-up bag B1 at the bottom end of the third packaging bag bundle 20c so that it is flat. Similarly, for the third packaging bag bundle 20c stacked on top of the second packaging bag bundle 20b, the zippered stand-up bag B1 that is diagonally suspended between the one end side second stopper 15b and the other end side second stopper 25b slides toward the one end side wall surface 12 and bends due to the weight from the top, falling so as to fill the space created below the other end side second stopper 25b.

[0040] In this way, the stand bag B1 with a zipper is slid toward the one end side wall surface 12 or the other end side wall surface 13, and the stand bag B1 with a zipper is bent by the weight from above and made to fall downwards, so that when the stand bag B1 with a zipper is stored in the stocker body 11, it can fall downwards without clogging and can be easily pulled out from the discharge opening 11b at predetermined intervals. Furthermore, the one-end stoppers 15a, 15b can restrict the number of first packaging bag bundles 20a stocked below the one-end first stopper 15a to a substantially constant number. Therefore, when removing the resealable stand-up bags B1 from the first packaging bag bundle 20a in order from the bottom, the frictional force between the packaging bags acting on the bottommost resealable stand-up bag B1 due to the weight of the multiple stacked resealable stand-up bags B1 can be reduced compared to a packaging bag stocker 10 without the one-end first stopper 15a, so it is possible to prevent a large number of packaging bags from being conveyed out while overlapping each other near the discharge port 11b or from becoming clogged with packaging bags at the discharge port 11b. The above has been an explanation of stacking zippered stand-up bags B1, but in the case of zippered flat bags B2, the only difference is the orientation of the packaging bags as shown in the first embodiment, and other aspects are the same, so explanation will be omitted.

[0041] According to the packaging bag stocker 10B of this embodiment, a plurality of resealable stand-up bags B1 are stacked in the stocker main body 11 to form a first packaging bag bundle 20a, and the top surface of the resealable stand-up bag B1 at the bottom of the second packaging bag bundle 20b is supported between the other end side of the first packaging bag bundle 20a and the one-end side first stopper 15a so that it is approximately flat, thereby stacking the second packaging bag bundle 20b, and further, the top surface of the resealable stand-up bag B1 at the bottom of the third packaging bag bundle 20c is supported between the other end side of the second packaging bag bundle 20b and the one-end side second stopper 15b so that it is approximately flat, thereby storing a large number of resealable stand-up bags B1 so as to stack the third packaging bag bundle 20c. This makes it possible to prevent the packing bag bundles 20a, 20b, 20c from tilting toward one end where the bulk of the packing bag bundles 20a, 20b, 20c becomes smaller, and the stand-up bags B1 with zippers can be easily stacked in a bundle, making it easy to stock a large amount of packing bags. Furthermore, by using the packaging bag stocker 10B according to this embodiment, packaging bags can be stacked vertically in bundles for storage, regardless of the length of the bag feed conveyor 100, which conventionally stocked multiple packaging bags side by side. This reduces the installation space for the packaging machine, making it possible to provide a compact, space-saving packaging machine. In addition, the packaging bag stocker 10B can be easily incorporated into an existing packaging machine equipped with the bag feed conveyor 100, making it easy to increase the number of packaging bags that can be stocked. Example 4

[0042] Further, another embodiment of the packaging bag stocker will be described with reference to the accompanying drawings.

[0043] 8, the packaging bag stocker 10C according to the fourth embodiment has a supply opening 11a and a discharge opening 11b, and a flap portion 16 below the other end wall surface 13, similar to the packaging bag stocker 10 described in the first embodiment. Also similar is the fact that a bag feed conveyor 100 is disposed below the discharge opening 11b. Also similar to the packaging bag stocker 10B described in the third embodiment, a first one-end stopper 15a and a second one-end stopper 15b are provided at predetermined positions on the one end wall surface 12, and a first other-end stopper 25a and a second other-end stopper 25b are provided at predetermined positions on the other end wall surface 13. That is, the main configuration of the packaging bag stocker 10C according to the present embodiment is configured similarly to the packaging bag stocker 10B described in the third embodiment. Therefore, the construction and method of use of the stoppers 15a, 15b, 25a, 25b provided on the one end wall surface 12 and the other end wall surface 13 of the stocker body 11 are the same as those in the third embodiment, and therefore a description thereof will be omitted. Here, the difference between the packaging bag stocker 10C of this embodiment and the packaging bag stocker 10B of the third embodiment is that, as shown in Figure 8, an ejection guide 30 is provided inside the flap portion 16 of the ejection opening 11b.

[0044] The discharge guide 30 is made of a rod curved in an arc shape. The rod is preferably made of rubber, silicone, or the like, and has appropriate elasticity and slip resistance. The rod may be a rectangular or cylindrical rod as long as it has appropriate elasticity and slip resistance. The discharge guides 30 are fixed to the inside of the flap portion 16 so as to slope downward from the back of the discharge opening 11b to the front. In this embodiment, one discharge guide 30 is installed on each of the left and right sides inside the flap portion 16, but this is not limitative and, for example, one discharge guide may be fixed to the center of the inside of the flap portion 16.

[0045] The method of using the packaging bag stocker 10C having the above-described configuration will be described below with reference to the accompanying drawings.

[0046] As shown in Figs. 7 and 8, the packaging bag stocker 10C according to the fourth embodiment has the same packaging bag bundles 20a, 20b, and 20c stored in the stocker main body 11 as those in the third embodiment, and therefore a description thereof will be omitted.

[0047] Here, when the bag supply conveyor 100 sequentially removes the zippered stand-up bag B1 from the bottom of the first packaging bag bundle 20a, the weight of the zippered stand-up bag B1 that constitutes the first packaging bag bundle 20a from the stand-up bag B1 stacked on top of it and friction between the stand-up bags B1 may cause the first packaging bag bundle 20a to form a clump and be pulled toward the discharge port 11b. At this time, as shown in Figure 7, the other end side of the first packaging bag bundle 20a is bulkier by the thickness of the zipper, so the other end opening of the stand-up bag B1 abuts against the flap portion 16, causing the stand-up bag B1 to roll up or bend in a large upward arc, which may cause it to get stuck at the discharge outlet 11b.

[0048] 8, the carry-out guide 30 abuts against the other end edge of the first packaging bag bundle 20a. The resealable stand-up bags B1, whose other end edge abuts against the arc-curved carry-out guide 30, are pushed back by the elasticity of the carry-out guide 30, and slide along the arc from the other end edge to the upper surface near the other end edge in contact with the carry-out guide 30. Since the carry-out guide 30 is configured to be non-slip, the resealable stand-up bags B1 constituting the first packaging bag bundle 20a are extracted in order, starting with the lowest resealable stand-up bag B1 that has come off the carry-out guide 30. Furthermore, the discharge guide 30 holds the first packaging bag bundle 20a in the opposite direction to the direction in which the bag supply conveyor 100 pulls the zippered stand-up bags B1, so that even if the zippered stand-up bags B1 that make up the first packaging bag 20a have stuck together due to frictional force, static electricity, or the like, they can be easily peeled apart.

[0049] According to the packaging bag stocker 10C of this embodiment, the discharge guide 30 restrains the other end of the first packaging bag bundle 20a stacked near the discharge opening 11b and supports the lowermost resealable stand-up bags B1 of the first packaging bag bundle 20a so that they can be pulled out one by one. Therefore, even if the stand-up bags B1 stick together due to the weight of the resealable stand-up bags B1 stacked on top of each other, friction between the stand-up bags B1, or static electricity generated at the contact surfaces of the overlapping stand-up bags B1, the resealable stand-up bags B1 can be pulled out one by one from the discharge opening 11b by the bag feed conveyor 100.

[0050] The packaging bag stockers 10, 10A, 10B, and 10C according to the first to fourth embodiments prevent the resealable packaging bags from tilting inside the stocker body 11, as shown in Fig. 9 in the past, and allow the packaging bags to be stacked with the same orientation, enabling a large quantity to be stocked. Furthermore, by incorporating the packaging bag stockers 10, 10A, 10B, and 10C into the bag feeding device of a packaging machine, the planar space required for installing the packaging machine can be significantly reduced, making it possible to provide a compact packaging machine with a large-capacity bag feeding function. [Explanation of symbols]

[0051] 10, 10A, 10B, 10C...Packaging bag stocker, 11...stocker body, 11a...supply port, 11b...unloading port, 12... one end side wall surface, 13... other end side wall surface, 14... side wall, 15... one end side stopper, 15a... one end side first stopper, 15b... one end side second stopper, 16...Flap section, 20...packaging bag bundle, 20a...first packaging bag bundle, 20b...second packaging bag bundle, 20c...third packaging bag bundle, 25a...first stopper on the other end side, 25b...second stopper on the other end side, 30...Export guide, B1...Stand-up pouch with zipper, B1...Flat pouch with zipper, C...Zipper part OP1...opening end before packaging of stand-up bag B1 with zipper, OP2...opening end before packaging of flat bag B2 with zipper, Bt...Bottom of the zippered stand-up bag B1.

Claims

1. When a plurality of sheets are stacked in the same orientation, a packaging bag is sandwiched between the one end edge portion and the other end edge portion, the one end edge portion being larger in volume than the other end edge portion, and the one end wall surface is erected opposite the one end edge portion, and the other end wall surface is erected opposite the other end edge portion, A supply port is provided at the top through which the packaging bags are supplied, and a discharge port is provided at the bottom through which the packaging bags can be removed, a packaging bag stocker configured to stack a predetermined number of packaging bags supplied from the supply port between the one end side wall surface and the other end side wall surface, and to sequentially transport the stacked packaging bags from the transport port toward a bag supply device in order starting from the lowest packaging bag, A packaging bag stocker characterized in that a one-end stopper that engages with one end edge of the packaging bag is provided on the one-end wall surface.

2. 2. The packaging bag stocker according to claim 1, wherein another one-end stopper is provided above or below the one-end stopper.

3. two or more one-end stoppers are provided at predetermined intervals on the one-end wall surface, At least one other end stopper is provided on the other end wall surface to engage with the other end edge of the packaging bag, 3. The packaging bag stocker according to claim 1, wherein the one end stopper and the other end stopper are arranged opposite each other in a staggered manner.

4. The packaging bag stocker according to claim 1, characterized in that an ejection guide is provided near the ejection opening, and the side edge of the packaging bag being ejected is abutted against the ejection guide, causing the upper surface of the packaging bag to slide from the side edge.

Images