Bag feeding method using a continuous packing bag

Abstract

To provide a bag feeding method using a continuous packaging bag body, which handle a continuous packaging bag body, such that: quality can be ensured and bag loss can be kept to a minimum; bag-feeding to the packaging part side can be unmanned or have less personnel, and a bag feeding device can be simplified and cost can be significantly reduced; and space can be economized to suit large capacity bag-feeding packaging.SOLUTION: A bag feeding method using a continuous packaging bag body includes: a conveying step for conveying a continuous packaging bag body S with a continuous packaging bag body feeding mechanism 11; a cutting step for cutting the continuous packaging bag body S into packaging bags a with a cutting mechanism 12; and a transferring step for using a packaging bag transfer mechanism 13 to transfer the packaging bags a, which have been cut by the cutting mechanism 12, to the packaging part side.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a bag supply method using a continuous web of packaging bags, which is suitable as a method for supplying packaging bags to a packaging machine or the like. [Background technology]

[0002] Conventionally, as a device for supplying packaging bags to a packaging machine or the like, a bag feeding device that sequentially supplies packaging bags into a packaging machine that performs various packaging processes has been widely used (for example, JP 2016-55904 A). This bag feeding device generally removes packaging bags stored in a box one by one by hand or using a robot, sequentially arranging them on a conveyor, and transports them to the packaging machine. On the other hand, a form-fill-seal machine makes packaging bags from packaging film wound into a roll in a bag making section and sequentially supplies them to the packaging section. Furthermore, the bag making machine makes packaging bags, packs them into boxes, and supplies them to the bag feeding device or the bag feeding and sealing machine.

[0003] However, conventional bag feeders and bag feeder / sealers require the removal of packaging bags one by one from a box and sequentially arranging them on a conveyor. Furthermore, as the volume of packaging bags increases, the installation space required and costs become concerns. In bag-making / sealers, the installation space required for the bag-making section also becomes a problem as the volume of packaging bags increases. Furthermore, the packaging bags made by the bag making machine and packed in boxes must be arranged on the conveyor of the bag feeder or bag feeder / sealer, which increases costs. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-55904 Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the object of the present invention is to provide a bag feeding method using a continuous sheet of packaging bags that can reduce the number of people required to feed bags to the packaging section or make it automatic, simplify the bag feeding device, significantly reduce costs, and is also suitable for large-volume bag feeding and packaging due to its space-saving design. [Means for solving the problem]

[0006] The object of the present invention is to solve the above-mentioned problem by a conveying process of conveying a continuous body of packaging bags, which is a long continuous body of packaging bags prepared in advance outside the machine, by a continuous body feeding mechanism of packaging bags, and a cutting mechanism of the continuous body of packaging bags. Before filling the bag with the packaged items in the bag feeding device a cutting step of cutting each of the packaging bags into individual bags; and a packaging bag delivery mechanism for delivering the packaging bags cut by the cutting mechanism. , and fill the packaged items The continuous body of packaging bags is wound in a coil and fed with the bag openings facing upward, and the continuous body of packaging bags is fed with the bag openings facing upward in the conveying step. Also in the cutting step, the continuous body of packaging bags is fed with the bag openings facing upward. Before filling the bag with the packaged items in the bag feeding device This is a bag supply method using a continuous body of packaging bags, characterized in that the packaging bags are cut and then transferred in the transfer process with the bag openings facing upward (Claim 1).

[0007] The conveying step preferably includes a pre-filling treatment step for performing a pre-filling treatment on the continuous body of packaging bags (claim 2). The conveying step preferably includes a step of retaining the continuous body of packaging bags using a retention mechanism (claim 3). The conveying step preferably includes a punching step for the continuous body of packaging bags (claim 4). [Effects of the Invention]

[0008] According to the bag feeding method using the continuous packaging bag body described in claim 1, the feeding of bags to the packaging section can be done with less manpower or automatically, the bag feeding device can be simplified, costs can be significantly reduced, and the space saving makes this a bag feeding method suitable for feeding and packaging large volumes of bags. According to the bag supply method using the continuous packaging bag body described in claim 2, the number of packaging steps on the packaging unit side can be reduced, thereby further saving space on the packaging unit side. According to the bag supply method using the continuous packaging bag web described in claim 3, even if a problem occurs on the packaging section side, there is no need to simultaneously stop the continuous packaging bag web feed mechanism, and the feed amount of the continuous packaging bag web can be adjusted appropriately. According to the bag supply method using the continuous body of packaging bags as set forth in claim 4, the continuous body of packaging bags can be punched in the conveying step to produce desired packaging bags. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic perspective view illustrating an embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. [Figure 2] FIG. 10 is a perspective view illustrating another continuous body of packaging bags having a different bag shape. [Figure 3] FIG. 10 is a perspective view illustrating another continuous body of packaging bags having a different bag shape. [Figure 4] FIG. 10 is a perspective view illustrating another continuous body of packaging bags having a different bag shape. [Figure 5] FIG. 10 is a perspective view illustrating another continuous body of packaging bags having a different bag shape. [Figure 6] 10 is a schematic perspective view illustrating another embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. FIG. [Figure 7] 10 is a schematic perspective view illustrating another embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. FIG. [Figure 8] FIG. 10 is a perspective view illustrating another continuous body of packaging bags having a different bag shape. [Figure 9] 10 is a schematic perspective view illustrating another embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. FIG. [Figure 10] 10 is a schematic perspective view illustrating another embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. FIG. [Figure 11] 10 is a schematic perspective view illustrating another embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. FIG. [Figure 12] 10 is a schematic perspective view illustrating another embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. FIG. [Figure 13] 10 is a schematic perspective view illustrating another embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. FIG. [Figure 14] 10 is a schematic perspective view illustrating another embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. FIG. [Figure 15] 10 is a schematic perspective view illustrating another embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. FIG. [Figure 16] 10 is a schematic perspective view illustrating another embodiment of a bag supply method using a continuous sheet of packaging bags according to the present invention. FIG. [Figure 17] FIG. 10 is a perspective view for explaining another embodiment of a continuous body of packaging bags. [Figure 18] FIG. 10 is a perspective view for explaining another embodiment of a continuous body of packaging bags. [Figure 19] FIG. 10 is a front view for explaining another embodiment of the continuous body of packaging bags. [Figure 20] FIG. 10 is a front view for explaining another embodiment of the continuous body of packaging bags. [Figure 21] FIG. 10 is a front view for explaining another embodiment of the continuous body of packaging bags. [Figure 22] FIG. 10 is a front view for explaining another embodiment of the continuous body of packaging bags. [Figure 23] 10A and 10B are explanatory views for explaining another embodiment of a continuous body of packaging bags, in which (a) is a perspective view of a packaging bag, and (b) is a side view of the continuous body of packaging bags. [Figure 24] 10A and 10B are explanatory views for explaining another embodiment of a continuous body of packaging bags, in which (a) is a perspective view of a packaging bag, and (b) is a front view of the continuous body of packaging bags. [Figure 25] FIG. 10 is a front view for explaining another embodiment of the continuous body of packaging bags. [Figure 26] FIG. 10 is a front view for explaining another embodiment of the continuous body of packaging bags. DETAILED DESCRIPTION OF THE INVENTION

[0010] In the present invention, there are provided a conveying step of conveying the continuous string of packaging bags S using a continuous string of packaging bags feed mechanism 11, a cutting step of cutting the continuous string of packaging bags S into individual packaging bags a using a cutting mechanism 12, and a delivery step of delivering the packaging bags a cut by the cutting mechanism 12 to the packaging unit side using a packaging bag delivery mechanism 13, and by cutting individual packaging bags from the continuous string of packaging bags S and feeding them to the packaging unit side, there is no need to manually or robotically remove packaging bags from boxes and line them up sequentially on a conveyor, and no bag-making device is required. By handling the continuous string of packaging bags, quality can be guaranteed and bag loss can be minimized, bags can be fed to the packaging machine with less or no manpower, the device can be simplified and costs can be significantly reduced, and a bag feeding method using a continuous string of packaging bags that is suitable for large-volume bag feeding and packaging due to space savings has been achieved. [Example]

[0011] A bag supply method using a continuous sheet of packaging bags according to the present invention will be described with reference to an embodiment shown in FIG. The bag supply method using the continuous web of packaging bags S of this embodiment includes a conveying step of conveying the continuous web of packaging bags S by a continuous-web of packaging bags feed mechanism 11, a cutting step of cutting the continuous web of packaging bags S into individual packaging bags a by a cutting mechanism 12, and a delivery step of delivering the packaging bags a cut by the cutting mechanism 12 to the packaging unit by a packaging bag delivery mechanism 13. Each step will be described in detail below.

[0012] The bag feeding and packaging machine P equipped with the bag feeding device Q to which the bag feeding method using the continuous packaging bag body S of this embodiment is applied is an apparatus that opens the bag opening of the packaging bag a, fills the packaged items, and seals the bag. Each of the eight stations 1 to 8 has a bag feeding process (Station 1) that supplies the packaging bag a, a bag opening process (Station 2) that opens the top opening, a bag bottom expanding / filling / bottom vibrating process (Station 3) that expands the bag bottom and fills the packaged items into the packaging bag a and vibrates the packaged items, and a bag bottom expanding / filling / bottom vibrating process (Station 4) that pushes the packaged items into the packaging bag a and vibrates the packaged items. The equipment mass-produces packaging bags a (products) filled with packaged goods by repeating the following processes: a pushing and bottom vibration process (Station 4) that applies pressure to the bag, a jam detection and empty bag discharge process (Station 5) that detects jamming and discharges the empty bag out of the machine, a top sealing and air removal process (Station 6) that horizontally top seals the area near the bag opening and removes the air from the packaging bag a, a cooling sealing process (Station 7) that cools the top seal, and a product discharge process (Station 8) that discharges the packaging bag a with the packaged goods out of the machine.

[0013] Specifically, at Station 1, a packaging bag a is held in a suspended position by a pair of grips g that move sequentially (either intermittently or continuously). At Station 2, suction cups (not shown) adhere to both sides of the top opening of the packaging bag a, opening the bag. At Station 3, the bottom of the bag is expanded, and the packaged item is filled into the packaging bag a through a filling funnel (not shown). The bottom of the bag is then vibrated by a vibrating element (not shown) to level the packaged item. At Station 4, the packaged item is pushed into the packaging bag a and vibrated. At Station 5, whether or not the packaged item is caught is detected, and the empty bag is discharged from the machine. At Station 6, a top seal is applied horizontally near the opening of the packaging bag a, and the packaging bag a is pressed to remove air from inside the packaging bag a. At Station 7, the top-sealed area is cooled. At Station 8, the packaging bag a, packed with the packaged item, is discharged from the machine as a finished product.

[0014] In this embodiment, the bag feeding method using the continuous packaging bag web of the present invention is applied to a rotary-type bag feed and packaging machine, but the bag feed and packaging machine to which the present invention is applied is not limited to this and widely includes bag feed and packaging machines other than make-fill-seal machines, such as track-type bag feed and packaging machines and linear-motion type bag feed and packaging machines. Also included are bag feed and packaging machines in which the bag gripping section is configured by something other than a grip pair. Furthermore, the content and number of each packaging station are not limited to those described above and can be modified as appropriate depending on the packaging bag or the packaged item, etc.

[0015] In this bag feeding and packaging machine P, a stand (not shown) that rotatably supports a vertically extending intermittent rotation shaft (not shown) is provided on a machine base (not shown), and eight pairs of grip pairs (bag gripping portions) g for gripping and releasing packaging bags a are provided around a movable body (disk-shaped rotating body) 10 attached to the top of the intermittent rotation shaft, protruding radially at equal angular intervals from the rotation shaft (whether intermittent rotation or continuous rotation). In the bag feeding and packaging machine P, packaging bags a are bagged using a bag feeding device Q during the bag feeding process, and the packaging bags a are fed so that they are supported in a hanging position in a vertical position to the grip pairs (bag gripping portions) g that move sequentially (whether intermittent rotation or continuous rotation) to station 1. That is, bag feeding device Q sequentially supplies packaging bags a to the grip pairs (bag gripping portions) g at station 1.

[0016] In addition, in this application, the term "continuous body of packaging bags" is a concept that broadly encompasses packaging bags that can be cut and separated to fill and seal packaged items as individual packaging bags in a packaging process or packaging machine, and / or a long continuous body of packaging bags pre-made outside the machine (outside the bag feeding device or outside the bag feeding and packaging machine). For example, it broadly encompasses not only a long continuous body of packaging bags (a continuous body of premade bags) made by a bag making machine, but also a long continuous body made by welding individual packaging bags. In addition, the concept of a "continuous body of packaging bags" also encompasses a body in which the packaging bags are continuous in the length direction, a body in which the packaging bags are continuous in the width direction, and a body in which the packaging bags are continuous in both the length direction and the width direction of the continuous body of packaging bags.

[0017] Furthermore, in this application, the "packaging unit side" means the packaging machine in the case of a bag feeding device alone, and in the case of a bag feeding and packaging machine, means the packaging unit, the bag gripping unit (e.g., a grip pair) that moves sequentially to station 1, or station 1 for feeding bags, and is a concept that broadly includes the outside where the packaging process is carried out.

[0018] The packaging bag continuum feed mechanism 11 is for feeding the packaging bag continuum S to the packaging section side (downstream side), and in this embodiment the packaging bag continuum feed mechanism 11 has a first packaging bag continuum feed 14 provided on the upstream side and a second packaging bag continuum feed 15 provided on the downstream side.

[0019] In the conveying process in which the continuous packaging bag web S is conveyed by the continuous packaging bag web feed mechanism 11, the first continuous packaging bag web feed 14 and the second continuous packaging bag web feed 15 each have a pair of feed rollers, and each pair of these feed rollers is driven to rotate, adjust the rotation speed, and stop operation by a servo motor device (not shown), so that the continuous packaging bag web S is appropriately sent to the side (downstream side) where the packaging process is carried out.

[0020] In the embodiment shown in FIG. 1, the bag shape of the unit packaging bags that make up the continuous packaging bag string S is a flat bag a, but is not limited to this and widely includes any bag that can be cut and separated into individual packaging bags in a packaging process or packaging machine, where the packaged item can be filled and sealed. For example, it may be a double bag a2 having a perforation k in the lengthwise direction in the center shown in FIG. 2, a flat bag a3 with a hole punch h shown in FIG. 3 (the hole punch h of this flat bag a3 is detected by a mark sensor 16), a stand-up bag a4 with a zipper shown in FIG. 4, a gusset bag a5 shown in FIG. 5, a four-sided bag, a three-sided bag, a gusset bag with a zipper, a flat bottle, a flat bottle with a zipper, etc.

[0021] The differences in the bag shapes of the unit packaging bags that make up the continuous packaging bag web S are recognized by a mark sensor 16 detecting a registration mark m printed on each unit packaging bag, and a control unit (not shown) controls various devices in the bag feeding and packaging machine P according to the bag shape based on the output signal from the mark sensor 16. For bags that do not have a mark sensor, bag pitch feed control is performed.

[0022] In addition, in the conveying step of this embodiment, a pre-filling treatment step is carried out to perform a pre-filling treatment on the continuous web of packaging bags. This pre-filling treatment is, for example, a printing step in which printing is performed on the continuous web of packaging bags S by a printing device 17, or a print inspection step in which printing on the continuous web of packaging bags S is inspected. By performing these steps in the bag supply step, the number of packaging steps in the packaging section can be reduced, and the packaging machine can be made more space-saving. However, the pre-filling treatment step in this application is not limited to the printing step or the print inspection step, but broadly includes a step in which pre-filling treatment is performed on the continuous web of packaging bags S.

[0023] In the conveying process of this embodiment, a process of retaining the continuous web of packaging bags S by the retention mechanism 19 is carried out as needed. This process eliminates the need to simultaneously stop the continuous web of packaging bags feed mechanism 11 even if a problem occurs on the packaging section side, and also makes it possible to appropriately adjust the feed amount of the continuous web of packaging bags S.

[0024] Specifically, the retention mechanism 19 is a mechanism that acts to store and retain the continuous packaging bag web S inside, and has a group of fixed rollers 20 provided on the upper side and a group of tension rollers 21 (a group of buffer dancer rollers) that are arranged to be able to rise and fall, and when the group of tension rollers 21 is lowered by a lifting device (e.g., a servo motor), the distance between the group of fixed rollers 20 and the group of tension rollers 21 increases, forming a serpentine path for the continuous packaging bag web S, thereby allowing the continuous packaging bag web S to be retained.

[0025] Then, for example, when the trouble in the packaging process is resolved, the second packaging bag continuous feeder 15 resumes feeding downstream, and accordingly, the tension roller groups 21 start to rise sequentially from the downstream side and return to their initial positions. When all tension roller groups 21 have returned to their initial positions, normal continuous feeding operation is resumed.

[0026] In the conveying step of this embodiment, a punching step is performed on the continuous web of packaging bags S. By this step, the continuous web of packaging bags S is punched in the conveying step, and desired packaging bags can be produced.

[0027] Specifically, the bag supply device Q has a punching device (e.g., a punch) 22 for punching the continuous packaging bag web S, which allows the continuous packaging bag web S to be punched, for example, with an R cut, a hole punch, a base notch, etc., to produce the desired packaging bag.

[0028] In the conveying process of this embodiment, the continuous web of packaging bags S is paid out from the folded continuous web of packaging bags storage section 23. This allows the continuous web of packaging bags S to be stored compactly in the continuous web of packaging bags storage section 23, and also allows the continuous web of packaging bags S to be paid out smoothly from the continuous web of packaging bags storage section 23.

[0029] Specifically, in this embodiment, the packaging bag continuum storage section 23 is a bottomed box with an open top, and the packaging bag continuum S is folded and stored in this packaging bag continuum storage section 23, and is fed out of the packaging bag continuum storage section 23 by the first packaging bag continuum feeder 14 and sent downstream.

[0030] In the cutting process in which the continuous web of packaging bags S is cut into individual packaging bags a by the cutting mechanism 12, the continuous web of packaging bags fed by the continuous web of packaging bags feed mechanism 11 (specifically, the second continuous web of packaging bags feeder 15) is cut into individual packaging bags a by the cutting mechanism 12. In this process, the continuous web of packaging bags is cut in a direction perpendicular to the conveying direction (feed direction) and separated into individual packaging bags.

[0031] In this embodiment, the cutting mechanism 12 has a cutter arranged in a direction perpendicular to the conveying direction (feed direction) of the continuous packaging bag web S, and this cutter moves up and down to cut the continuous packaging bag web S, but this is not limited to this, and any cutting mechanism, such as a fusing mechanism, may be used as long as it is capable of cutting the continuous packaging bag web S and sequentially separating it into individual packaging bags a.

[0032] In the transfer process in which the packaging bag transfer mechanism 13 transfers the packaging bags a cut by the cutting mechanism 12 to the packaging unit side, a loading process is carried out in which the packaging bags a cut by the cutting mechanism 12 are loaded onto the packaging bag loading magazine 24. In this process, the packaging bags a that have been cut and individually separated from the continuous web of packaging bags S are stacked and stocked, making it possible to adjust the timing of delivery to the packaging unit side.

[0033] In the delivery process of this embodiment, a positioning process is performed to position the packaging bag a. This process allows adjustment of the packaging bag a so that it does not shift in position on the packaging unit side before being delivered to the packaging unit side.

[0034] Specifically, the bag supply device Q of this embodiment has a positioning mechanism 25 for positioning the packaging bag a downstream of the packaging bag loading magazine 24, and the positioning mechanism 25 has a positioning table 26 on which the packaging bag a is placed, a pair of widthwise positioning plates 27 provided so as to be movable inward and outward in the width direction of the packaging bag a, and a lengthwise positioning plate 28 provided so as to be movable inward and outward in the lengthwise direction of the packaging bag a. The pair of widthwise positioning plates 27 and lengthwise positioning plate 28 move the packaging bag a placed on the positioning table 26 from both sides in the width direction and one side in the length direction inward (toward the packaging bag a), respectively, by means of a reciprocating mechanism (not shown).

[0035] The packaging bag a is transferred from the cutting mechanism 12 to the packaging bag loading magazine 24 by a first transfer mechanism 29 having a pair of suction cups 29a and configured to be able to move up and down and horizontally, and the packaging bag a is transferred from the packaging bag loading magazine 24 to the positioning mechanism 25 by a second transfer mechanism 30 having a pair of suction cups 30a and configured to be able to move up and down and horizontally.

[0036] Furthermore, the transfer process in this embodiment is for sequentially transferring packaging bags a to grip pair g at station 1, and includes a first capture process in which the first bag capture section 31 captures the packaging bag a positioned on the positioning table 26, and a second capture process in which the second bag capture section 32 receives the packaging bag a held by the first bag capture section 31 and then transfers it to grip pair g.

[0037] In the first capturing step, the packaging bag a positioned on the positioning table 26 is captured by a first bag capturing section 31 having a pivoting arm (bag capturing pipe: not shown) that captures the packaging bag a and rotates it to a vertical position, and a pair of suction cups 33 provided at the lower end of the pivoting arm that adsorbs the packaging bag a from the top side.

[0038] The first bag catching section 31 has a height correction mechanism 34 for correcting the height of the packaging bag a caught by the pair of suction cups 33 provided at the lower end of the rotating arm.

[0039] Since the packaging bags a, which are captured by the suction cups 33 and supported in a hanging state in a vertical position, range in height from low to high when gripped by the grip pair (bag gripping portion) g, this height correction mechanism 34 makes it possible to adjust the height of the suction cups 33 provided at the lower end of the pivot arm before being gripped by the grip pair (bag gripping portion) g, thereby adjusting the height above the claws of each packaging bag a (the length of the part above the grip pair g: including the height above the claws depending on the type of packaging bag a).

[0040] In the second capturing step, the packaging bag a held by the first bag capturing section 31 is received by the second bag capturing section 32, which has a pair of gripping sections 35 configured to be able to clamp in order to receive the packaging bag a supported in a vertical position by the pivoting arm of the first bag capturing section 5, and a bag transfer section 36 for transferring the packaging bag a captured by the pair of gripping sections 35 to the grip pair g, and then passes it on to the grip pair g.

[0041] As described above, the bag supply method using the continuous web of packaging bags S of this embodiment comprises a conveying step of conveying the continuous web of packaging bags S by the continuous bag feed mechanism 11, a cutting step of cutting the continuous web of packaging bags S into individual packaging bags a by the cutting mechanism 12, and a delivery step of delivering the packaging bags a cut by the cutting mechanism 12 to the packaging unit by the packaging bag delivery mechanism 13. Because individual packaging bags a are cut from the continuous web of packaging bags S and supplied, there is no need to manually or robotically remove packaging bags from boxes and line them up sequentially on a conveyor, and no bag-making device is required. This allows for labor-saving or unmanned supply of bags to the packaging unit, simplifies the bag supply device, significantly reduces costs, and saves space, making this a bag supply method suitable for large-volume bag supply and packaging.

[0042] Next, a bag supply method using the continuous bag web of the present invention shown in FIG. 6 will be described. The basic difference between the bag feeding method using the continuous sheet of packaging bags of this embodiment (the bag feeding method in bag feeding and packaging machine P2 equipped with bag feeding device Q2) and the bag feeding method using the continuous sheet of packaging bags shown in Fig. 1 (the bag feeding method in bag feeding and packaging machine P equipped with bag feeding device Q) is that the delivery process of the bag feeding method using the continuous sheet of packaging bags of this embodiment does not include a loading process of loading packaging bags a cut by cutting mechanism 12 onto packaging bag loading magazine 24 or a positioning process of positioning packaging bags a by positioning mechanism 25, but includes a correction change process of correcting the inclination of packaging bags a by packaging bag rotation mechanism 37 or changing the orientation of packaging bags a. The same components as those in bag feeding and packaging machine P equipped with bag feeding device Q are given the same reference numerals and their description will be omitted.

[0043] In this correction and change process, packaging bag rotation mechanism 37 has a pair of suction cups 38a and is configured to be able to move up and down, move horizontally, and rotate while adsorbing and holding packaging bag a, and has a packaging bag holding mechanism 38 that is configured to be able to move up and down, move horizontally, and rotate while adsorbing and holding packaging bag a, and a camera 39 for detecting the attitude (tilt or orientation) of packaging bag a, and the control unit corrects or changes the tilt or orientation of packaging bag a by controlling the rotation of packaging bag holding mechanism 38 based on the image from camera 39. Thereafter, as with bag feeding and packaging machine P equipped with bag feeding device Q, after packaging bag a is received by first bag capture unit 31, it is handed over to grip pair (bag gripping unit) g by second bag capture unit 32.

[0044] Next, a bag supply method using the continuous bag web shown in FIG. 7 will be described. The basic difference between the bag feeding method using the continuous packaging bag web of this embodiment (the bag feeding method in the bag feeding and packaging machine P3 equipped with the bag feeding device Q3) and the bag feeding method using the continuous packaging bag web described above (the bag feeding method in the bag feeding and packaging machine P equipped with the bag feeding device Q) is that the bag feeding and packaging machine P equipped with the bag feeding device Q uses a continuous packaging bag web S that is a continuous web of packaging bags a in the length direction but a single one in the width direction, whereas the bag feeding and packaging machine P3 equipped with the bag feeding device Q3 uses a continuous packaging bag web S2 that is a continuous web of packaging bags a6 having a plurality of packaging bags in the width direction. Due to this difference, the bag feeding and packaging machine P3 equipped with the bag feeding device Q3 has a second cutting mechanism 40 for dividing the continuous web of packaging bags S2 into a plurality of pieces along the conveying direction, this second cutting mechanism 40 has a sealing mechanism 41 that seals the edge portions of the continuous web of packaging bags S2 divided along the conveying direction as it cuts, a plurality of packaging bag delivery mechanisms 13 are provided, and a plurality of grip pairs g move simultaneously through each of the packaging stations 1 to 8 so that each packaging process is performed simultaneously on a plurality of packaging bags a at each of the packaging stations 1 to 8. The same components as those in the bag feeding and packaging machine P equipped with the bag feeding device Q are designated by the same reference numerals and description thereof will be omitted.

[0045] In the conveying process in the bag feeding and packaging machine P3 equipped with the bag feeding device Q3, the second cutting mechanism 40 divides the continuous packaging bag sheet S into a plurality of pieces along the conveying direction, and seals the edge portions of the continuous packaging bag sheet S divided along the conveying direction while cutting.

[0046] Specifically, the second cutting mechanism 40 in this embodiment is an ultrasonic cutting mechanism, and has a horn side rotating body 42 that rotates on one side (top side) of the continuous packaging bag body S2 as the continuous packaging bag body S2 is transported, and an anvil side rotating body 43 that rotates on the other side (bottom side) of the continuous packaging bag body S2, and the horn side rotating body 42 has a rotating blade 42a in the center, and the anvil side rotating body 43 has an annular recess 43a in the center that engages with the rotating blade 42a.

[0047] When the horn-side rotor 42 and the anvil-side rotor 43 rotate as the continuous web of packaging bags S2 is conveyed, the continuous web of packaging bags S2 is cut and divided into a plurality of pieces (two in this embodiment, but three or more pieces may be used) between the rotary blade 42a and the annular recess 43a by ultrasonic vibration energy along the conveyance of the continuous web of packaging bags S2, and the continuous web of packaging bags S2 is welded (sealed) on both sides of the rotary blade 42a and the annular recess 43a. This allows the edges of the divided continuous web of packaging bags to be sealed while being divided into bags.

[0048] In this embodiment, since the continuous web of packaging bags S2 is a continuation of flat bags a6 that do not have a center seal, a sealing mechanism 41 (in this embodiment, the opposing surfaces on both sides of the rotary blade 42a and the annular recess 43a) that seals the edge portions of the cut continuous web of packaging bags S2 is required while cutting, but as shown in Figure 8, if a continuation of flat bags a7 that have a center seal c is used, a second cutting mechanism without a sealing mechanism may be used. In addition, the second cutting mechanism is not limited to one that uses ultrasonic waves, and may be any mechanism that can cut the continuous web of packaging bags as it is conveyed, such as one that uses only a cutter or a fusing mechanism other than ultrasonic.

[0049] A bag supplying method using the continuous bag web shown in FIG. 9 (a bag supplying method in the bag supplying and packaging machine P4 equipped with the bag supplying device Q4) will be described. The difference between the bag feed and packaging machine P4 equipped with the bag feed device Q4 of this embodiment and the bag feed and packaging machine P3 equipped with the bag feed device Q3 described above is that the bag feed and packaging machine P4 equipped with the bag feed device Q4 of this embodiment has a plurality of positioning mechanisms 25 for positioning the packaging bags a. The same components as those in the bag feed and packaging machine P3 equipped with the bag feed device Q3 are designated by the same reference numerals and will not be described again.

[0050] Specifically, the bag feeding and packaging machine P4 equipped with the bag feeding device Q4 of this embodiment has two positioning mechanisms 25 arranged side by side with the bag feeding device Q4, and thereby performs a positioning step of positioning the two packaging bags a so as to prevent misalignment at the packaging section before transferring the packaging bags a to the packaging section. The positioning mechanism 25 of this embodiment is provided downstream of the cutting means 12 and includes a positioning table 26 on which the packaging bags a are placed, a pair of widthwise positioning plates 27 provided so as to be movable inward and outward in the width direction of the packaging bags a, and a lengthwise positioning plate 28 provided so as to be movable inward and outward in the lengthwise direction of the packaging bags a6. The pair of widthwise positioning plates 27 and lengthwise positioning plates 28 are configured to move the packaging bags a placed on the positioning table 26 inward (toward the packaging bags a) from both sides in the width direction and one side in the length direction by reciprocating mechanisms (not shown), respectively, to position the packaging bags a.

[0051] A bag supplying method (a bag supplying method of the bag supply and packaging machine P5 equipped with the bag supply device Q5) using the continuous bag web shown in FIG. 10 will be described. The main difference between the bag feed and packaging machine P5 equipped with the bag feed device Q5 of this embodiment and the bag feed and packaging machine P3 equipped with the bag feed device Q3 described above is that the transfer step in the bag feed and packaging machine P5 equipped with the bag feed device Q5 of this embodiment involves transferring the packaging bags a in a vertical position to the grip pair g after the cutting step in which the hanging continuous web of packaging bags S2 is cut by cutting means 12 to produce packaging bags a. The same components as those in the bag feed and packaging machine P3 equipped with the bag feed device Q3 are designated by the same reference numerals and their description will be omitted.

[0052] A bag supplying method (a bag supplying method of the bag supply and packaging machine P6 equipped with the bag supply device Q6) using the continuous bag web shown in FIG. 11 will be described. The basic differences between the bag feed and packaging machine P6 equipped with the bag feeding device Q6 of this embodiment and the bag feed and packaging machine P equipped with the above-mentioned bag feeding device Q (the bag feed and packaging machine P shown in FIG. 1) are that the bag feed and packaging machine P equipped with the bag feeding device Q feeds the packaging bags a that make up the continuous web of packaging bags S with the bag openings facing horizontally, whereas the bag feed and packaging machine P6 equipped with the bag feeding device Q6 feeds the packaging bags a that make up the continuous web of packaging bags S with the bag openings facing upward (vertical) during the conveying process, and that the continuous web of packaging bags S is unwound from a coiled state during the conveying process. The same components as those in the bag feed and packaging machine P equipped with the bag feeding device Q are designated by the same reference numerals, and description thereof will be omitted.

[0053] Specifically, in the bag feeding and packaging machine P6 equipped with the bag feeding device Q6, both the continuous packaging bag web feed mechanism 11 and the cutting mechanism 12 are provided so as to extend vertically. This eliminates the need to change the orientation of the packaging bags a when the packaging bag transfer mechanism 13 delivers the packaging bags a to the station 1 side, making it possible to further simplify and compact the device itself. Furthermore, by unwinding the continuous packaging bag web S from a coiled state, the continuous packaging bag web S can be made compact and unwind in a space-saving state.

[0054] A bag supplying method using the continuous bag web shown in FIG. 12 (a bag supplying method of the bag supply and packaging machine P7 equipped with the bag supply device Q7) will be described. The bag feed and packaging machine P7 equipped with the bag feed device Q7 of this embodiment differs fundamentally from the bag feed and packaging machine P6 equipped with the bag feed device Q6 described above in that the bag feed and packaging machine P7 equipped with the bag feed device Q7 has multiple (two in this embodiment) cutting mechanisms 12, and multiple (two in this embodiment) packaging bag transfer mechanisms 13 corresponding to the number of cutting mechanisms 12. Multiple (two in this embodiment) packaging bags a are simultaneously transferred to station 1 by the multiple packaging bag transfer mechanisms 13, and the same packaging process is performed on multiple packaging bags a simultaneously. That is, the bag feeding method of this embodiment is characterized in that the cutting process is performed so that multiple packaging bags a are separated while the bag openings of the packaging bags a constituting the continuous web S of packaging bags face upward (vertically), and the transfer process is performed on multiple packaging bags a in a vertical position with their bag openings facing upward (vertically). The same components as those of the bag feed and packaging machine P6 equipped with the bag feed device Q6 are designated by the same reference numerals, and description thereof will be omitted.

[0055] A bag supplying method (a bag supplying method of a bag supplying and packaging machine P8 equipped with a bag supplying device Q8) using the continuous bag web shown in FIG. 13 will be described. The basic difference between the bag feed and packaging machine P8 equipped with the bag feed device Q8 of this embodiment and the bag feed and packaging machine P6 equipped with the bag feed device Q6 described above is that in the conveying process of the bag feed and packaging machine P6 equipped with the bag feed device Q6, the continuous web of packaging bags S is unwound from a coiled state, whereas in the conveying process of the bag feed and packaging machine P8 equipped with the bag feed device Q8, the continuous web of packaging bags S is unwound from a zigzag state. This allows the continuous web of packaging bags S to be unwound from a compact, space-saving state. The same components as those of the bag feed and packaging machine P6 equipped with the bag feed device Q6 are designated by the same reference numerals, and their description will be omitted.

[0056] A bag supplying method (a bag supplying method of a bag supplying and packaging machine P9 equipped with a bag supplying device Q9) using the continuous bag web shown in FIG. 14 will be described. The basic difference between the bag feed and packaging machine P9 equipped with the bag feed device Q9 of this embodiment and the bag feed and packaging machine P equipped with the bag feed device Q described above is that the bag feed and packaging machine P equipped with the bag feed device Q9 of this embodiment is a truck-type bag feed and packaging machine, while the bag feed and packaging machine P9 equipped with the bag feed device Q9 of this embodiment is a truck-type bag feed and packaging machine. The main difference in the bag feeding method is that the delivery process in the bag feed device Q9 of the bag feed and packaging machine P9 does not include the loading process of loading packaging bags a cut by the cutting mechanism 12 onto the packaging bag loading magazine 24, and the positioning process of positioning the packaging bags a by the positioning mechanism 25. The same components as those in the bag feed and packaging machine P equipped with the bag feed device Q are designated by the same reference numerals, and description thereof will be omitted.

[0057] A bag supplying method (a bag supplying method of a bag supplying and packaging machine P10 equipped with a bag supplying device Q10) using the continuous bag string shown in FIG. 15 will be described. The difference between the bag feed and packaging machine P10 equipped with the bag feeding device Q10 of this embodiment and the bag feed and packaging machine P9 equipped with the bag feeding device Q9 described above is that the bag feed and packaging machine P9 equipped with the bag feeding device Q9 is configured such that the continuous web of packaging bags S is folded and stored in the continuous web of packaging bags storage section 23, and is fed out of the continuous web of packaging bags storage section 23 and sent downstream by the first continuous web of packaging bags feeder 14, whereas the bag feed and packaging machine P10 equipped with the bag feeding device Q10 has a continuous web of packaging bags bobbin 44 from which the bag feeding device Q10 feeds the continuous web of packaging bags S wound in a roll, and is sent downstream by the first continuous web of packaging bags feeder 14. As a result, in the conveying process in the bag feed and packaging machine P10 equipped with the bag feeding device Q10, the continuous web of packaging bags S can be fed from the compactly wound continuous web of packaging bags bobbin 44.

[0058] A bag supplying method (a bag supplying method of the bag supply and packaging machine P11 equipped with the bag supply device Q11) using the continuous bag web shown in FIG. 16 will be described. The difference between the bag feed and packaging machine P11 equipped with the bag feeding device Q11 of this embodiment and the bag feed and packaging machine P9 equipped with the bag feeding device Q9 described above is that the bag feed and packaging machine P9 equipped with the bag feeding device Q9 has one cutting mechanism 12 and one packaging bag transfer mechanism 13, whereas the bag feed and packaging machine P11 equipped with the bag feeding device Q11 of this embodiment has multiple (four in this embodiment) cutting mechanisms 12 and multiple (four in this embodiment) packaging bag transfer mechanisms 13 corresponding to the number of cutting mechanisms 12, and is configured so that multiple (four in this embodiment) packaging bags a are transferred to station 1 simultaneously by the multiple (four in this embodiment) packaging bag transfer mechanisms 13, and the same packaging process is performed on multiple packaging bags a simultaneously. That is, in the bag feed and packaging machine P11 equipped with the bag feed device Q11 of this embodiment, in the cutting process, a plurality of (four in this embodiment) cutting mechanisms 12 simultaneously cut the packaging bags a, and in the transfer process, a plurality of (four in this embodiment) packaging bags a are simultaneously transferred by a plurality of (four in this embodiment) packaging bag transfer mechanisms 13 to a plurality of (four in this embodiment) grip pairs g that move intermittently in sequence to station 1. The same components as those in the bag feed and packaging machine P9 equipped with the bag feed device Q9 are designated by the same reference numerals, and description thereof will be omitted.

[0059] Further, other embodiments of the continuous body of packaging bags used in the present invention shown in Figs. 17 to 26 will be described in order. Each of these continuous bodies of packaging bags S3 to S12 is formed by welding adjacent packaging bags a together. In this way, by welding the ends of adjacent packaging bags a together (preferably by partially welding them at the welding part d), various packaging bags, including irregularly shaped packaging bags, can be formed into a continuous body of packaging bags and fed to the packaging section. Note that since the fused part d cannot be discerned visually even after welding, the packaging bag a can be used as is by cutting it. Any welding method may be used, and examples include high-frequency welding, heat welding, and ultrasonic welding.

[0060] 17 shows a continuous web of packaging bags S3 in which gusset bags a are connected in both the length and width directions, and the edges of adjacent packaging bags a are welded together at three welded portions d spaced apart in the length direction and at two welded portions d spaced apart in the width direction to form the continuous web of packaging bags S3. When the continuous web of packaging bags S3 is transported downstream by, for example, the bag supply device Q3 described above, with the length direction of the packaging bags a as the traveling direction, the three welded portions d provided along the length direction are cut by the second cutting mechanism 40, and then the two welded portions d provided along the width direction are cut by the cutting mechanism 12 to form individual packaging bags (gusset bags) a. The individual packaging bags (gusset bags) a are delivered to the packaging unit side (in this embodiment, a pair of grips that move intermittently in sequence) by the packaging bag delivery mechanism 13.

[0061] 18 is a continuous web of packaging bags S4 formed by connecting gusset bags a in the width direction, with the widthwise edge portions of adjacent packaging bags a partially welded at two spaced-apart welded portions d to form the continuous web of packaging bags S4. When the continuous web of packaging bags S4 is transported downstream by, for example, the bag supply device Q9 described above, with the width direction of the packaging bags a as the traveling direction, the cutting mechanism 12 cuts the two welded portions d provided along the width direction to form individual packaging bags (gusset bags) a. The individual packaging bags (gusset bags) a are delivered to the packaging unit side (in this embodiment, a pair of grips that move intermittently in sequence) by the packaging bag delivery mechanism 13.

[0062] 19 shows a continuous web of packaging bags S5 in which irregularly shaped packaging bags a, each with an oval upper front shape and a zipper, are connected in a widthwise direction, and the widthwise edge portions of adjacent packaging bags a are partially welded at two spaced-apart welded portions d to form the continuous web of packaging bags S5. When the continuous web of packaging bags S5 is conveyed downstream by, for example, the bag supply device Q9, with the width direction of the packaging bags a as the traveling direction, the cutting mechanism 12 cuts the two welded portions d provided along the width direction to form individual packaging bags a. The individual packaging bags a are delivered to the packaging unit by a packaging bag delivery mechanism 13.

[0063] 20 is similar to the continuous packaging bag web S5 in that it is made up of irregularly shaped packaging bags a with zippers and an oval upper front shape connected in the longitudinal direction, and the widthwise edge portions of adjacent packaging bags a are partially welded together at one welded portion d to form the continuous packaging bag web S6. When the continuous packaging bag web S6 is transported downstream by, for example, the aforementioned bag supply device Q9 with the lengthwise direction of the packaging bags a as the traveling direction, the cutting mechanism 12 cuts the single welded portion d provided along the widthwise direction to form individual packaging bags a. The individual packaging bags a are delivered to the packaging unit side by the packaging bag delivery mechanism 13.

[0064] 21 is a continuous web of packaging bags S7 in which irregularly shaped packaging bags a each having a spout f on one side of the upper portion are connected in the longitudinal direction, and the widthwise edge portions of adjacent packaging bags a are partially welded together at one welded portion d to form the continuous web of packaging bags S7. When the continuous web of packaging bags S7 is conveyed downstream by, for example, the bag supply device Q9 described above, with the length direction of the packaging bags a as the traveling direction, the single welded portion d provided along the width direction is cut by the cutting mechanism 12 to form individual packaging bags a. The individual packaging bags a are delivered to the packaging unit side by the packaging bag delivery mechanism 13.

[0065] 22 shows a continuous web of packaging bags S8 in which palm-seamed (back-sealed) type packaging bags a are connected in a widthwise direction, and the widthwise edge portions of adjacent packaging bags a are partially welded at two spaced-apart welded portions d to form the continuous web of packaging bags S8. When the continuous web of packaging bags S8 is conveyed downstream by, for example, the bag supply device Q9 described above, with the width direction of the packaging bags a as the traveling direction, the cutting mechanism 12 cuts the two welded portions d provided along the widthwise direction to form individual packaging bags a. The individual packaging bags a are delivered to the packaging unit by a packaging bag delivery mechanism 13. Note that, although the continuous web of packaging bags S8 in this embodiment is formed by connecting palm-seamed (back-sealed) type packaging bags a in a widthwise direction, a continuous web formed by welding a plurality of palm-seamed (back-sealed) type packaging bags a in a lengthwise direction or in a lengthwise and widthwise direction is also included in the category of a continuous web of packaging bags.

[0066] The continuous web of packaging bags S9 shown in Fig. 23 is made up of packaging bags (gusset bags of a seam-seamed (back-sealed) type) a connected in the longitudinal direction, and the longitudinal edge portions of adjacent packaging bags a are partially welded at two spaced-apart welded portions d to form the continuous web of packaging bags S9. When the continuous web of packaging bags S9 is conveyed downstream by, for example, the bag supply device Q9 described above with the longitudinal direction of the packaging bags a as the traveling direction, the cutting mechanism 12 cuts the two welded portions d provided along the width direction to form individual packaging bags a. The individual packaging bags a are delivered to the packaging unit side by the packaging bag delivery mechanism 13. Note that although the continuous web of packaging bags S9 in this embodiment is made up of packaging bags a connected in the longitudinal direction, a continuous web of packaging bags formed by welding packaging bags a in the width direction, the longitudinal direction, and the width direction also falls within the category of a continuous web of packaging bags.

[0067] The continuous web of packaging bags S10 shown in Fig. 24 is made up of packaging bags (gusseted self-standing bags with square bottoms) a connected in the longitudinal direction, and the longitudinal edge portions of adjacent packaging bags a are partially welded together at two spaced-apart welded portions d to form a continuous web of packaging bags S9. The continuous web of packaging bags S10 is then transported downstream by, for example, the bag supply device Q9 described above, with the longitudinal direction of the packaging bags a serving as the travel direction. The cutting mechanism 12 then cuts the two welded portions d provided along the width direction to form individual packaging bags a. The individual packaging bags a are delivered to the packaging unit by the packaging bag delivery mechanism 13. Note that while the continuous web of packaging bags S10 in this embodiment is made up of packaging bags a connected in the longitudinal direction, a continuous web of packaging bags formed by welding packaging bags a in the width direction or in both the longitudinal and width directions is also included in the category of continuous webs of packaging bags.

[0068] The continuous web of packaging bags S11 shown in Fig. 25 is made up of packaging bags (one-side three-side sealed bags) a connected in the longitudinal direction, and the longitudinal edge portions of adjacent packaging bags a are partially welded at two spaced-apart welded portions d to form the continuous web of packaging bags S11. When the continuous web of packaging bags S11 is transported downstream by, for example, the bag supply device Q9 described above, with the longitudinal direction of the packaging bags a as the traveling direction, the cutting mechanism 12 cuts the two welded portions d provided along the width direction to form individual packaging bags a. The individual packaging bags a are delivered to the packaging unit by the packaging bag delivery mechanism 13. Note that while the continuous web of packaging bags S11 in this embodiment is made up of packaging bags a connected in the longitudinal direction, a continuous web of packaging bags formed by welding packaging bags a in the width direction or in both the longitudinal and width directions is also included in the category of continuous web of packaging bags.

[0069] The continuous web of packaging bags S12 shown in Fig. 26 is made up of packaging bags a (irregular-shaped packaging bags for bottles with caps e) connected in the width direction, and the widthwise edge portions of adjacent packaging bags a are partially welded together at two spaced-apart welded portions d to form the continuous web of packaging bags S12. When the continuous web of packaging bags S12 is conveyed downstream by, for example, the bag supply device Q9 described above with the width direction of the packaging bags a as the traveling direction, the cutting mechanism 12 cuts the two welded portions d provided along the width direction to form individual packaging bags a. The individual packaging bags a are delivered to the packaging unit by the packaging bag delivery mechanism 13. Note that while the continuous web of packaging bags S12 in this embodiment is made up of packaging bags a connected in the width direction, a continuous web of packaging bags formed by welding packaging bags a in the length direction or in the length and width directions is also included in the category of continuous web of packaging bags.

[0070] It should be noted that the continuous packaging bags listed in this application are merely examples, and packaging bags other than these that are welded together in the lengthwise and / or widthwise directions to form a continuous body are broadly included in the category of continuous packaging bags in this application. [Explanation of symbols]

[0071] P packaging machine Q Bag feeding device S Packaging bag continuum a packaging bag g Bag gripping part (grip pair) Packaging stations 1-8 10 Moving object (disk-shaped rotating object) 11. Packaging bag continuous feed mechanism 12 Cutting mechanism 13 Packaging bag delivery mechanism 14 First packaging bag continuous feed 15 Second continuous packaging bag feed 16 Mark Sensor 17 Printing device 18 Print inspection equipment 19 Retention mechanism 20 Fixed roller group 21 Tension roller group 22 Punching equipment 23 Packaging bag continuous body storage section 24 Packaging bag loading magazine 25 Positioning mechanism 26 Positioning table 27 Width direction positioning plate 28 Lengthwise positioning plate 29 1st transfer mechanism 30 Second transfer mechanism 31 1st bag catcher 32 2nd bag catcher 33 Sucker 34 Height correction mechanism 35 Grip 36 Bag transfer section 37 Packaging bag rotation mechanism 38 Packaging bag holding mechanism 39 Camera 40 Second cutting mechanism 41 Sealing mechanism 42 Horn side rotor 43 Anvil side rotor 44 Continuous packaging bag bobbin

Claims

1. a conveying step of conveying a continuous body of packaging bags, which is a long continuous body of packaging bags previously produced outside the machine, by a continuous body feeding mechanism; a cutting step of cutting the continuous body of packaging bags into individual packaging bags by a cutting mechanism before the continuous body of packaging bags is filled with packaged items in a bag feeding device; A delivery process is provided in which the packaging bag cut by the cutting mechanism is delivered by a packaging bag delivery mechanism to a packaging unit that fills the packaging bag with an article to be packaged, In the conveying step, the continuous body of packaging bags is coiled and unwound with the bag openings facing upward, and the packaging bags are fed with the bag openings facing upward, In the cutting step, the continuous body of packaging bags is cut with the bag openings of the packaging bags facing upward before the packaging bags are filled with the packaged items in the bag feeding device, Furthermore, the bag supply method using a continuous web of packaging bags is characterized in that the cut packaging bags are delivered in the delivery step with their bag openings facing upward.

2. 2. The bag supply method using a continuous web of packaging bags according to claim 1, wherein the conveying step includes a pre-filling treatment step for performing a pre-filling treatment on the continuous web of packaging bags.

3. 3. The bag supply method using a continuous web of packaging bags according to claim 1, wherein the conveying step includes a step of retaining the continuous web of packaging bags using a retaining mechanism.

4. 4. The bag supply method according to claim 1, wherein the conveying step includes a punching step of the continuous body of packaging bags.

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