Bag feeding device

Abstract

To provide a bag-feeding device and a bag-feeding packaging machine provided with the same, 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 the 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 device Q includes: a continuous packaging bag body feeding mechanism 11 that feeds a continuous packaging bag body S; a cutting mechanism 12 that cuts the continuous packaging bag body S into packaging bags a, the continuous packaging bag body being fed from the continuous packaging bag body feeding mechanism 11; and a packaging bag transfer mechanism 13 for transferring 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 device that supplies packaging bags to a packaging machine or the like, and to a bag supply and packaging machine equipped with the same. [Background technology]

[0002] Conventionally, as a device for supplying packaging bags, a bag feeding device that sequentially supplies packaging bags into a packaging machine that performs various packaging processes for packaged items 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, etc., and sequentially arranges and transports them on a conveyor to supply 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. The installation space required for form-fill-sealers 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, an object of the present invention is to provide a bag feeding device and a bag feeding and packaging machine equipped with the same that can reduce the number of people required to feed bags to the packaging section or make it automatic, simplify the device, significantly reduce costs, and save space, making it suitable for large-volume bag feeding and packaging. [Means for solving the problem]

[0006] The object of the present invention is to solve the above-mentioned problem by providing a continuous bag feed mechanism for feeding a continuous bag body, which is a long continuous body of packaging bags prepared in advance outside the machine, and a continuous bag feed mechanism for feeding the continuous bag body fed by the continuous bag feed mechanism. before filling the packaged goods a cutting mechanism for cutting each packaging bag; and a cutting mechanism for cutting the packaging bag. , and fill the packaged items. The continuous body of packaging bags is wound up in a coiled state with the bag openings facing upward, and is fed by the continuous body of packaging bags feed mechanism with the bag openings facing upward. The continuous body of packaging bags is fed in a coiled state with the bag openings facing upward. Before filling the package This bag supply device is characterized in that the packaging bag is cut by the cutting mechanism, and then handed over to the packaging unit by the packaging bag transfer mechanism with the bag opening facing upward (Claim 1).

[0007] The bag feeding device may have a plurality of the cutting mechanisms, and the packaging bag transfer mechanism may have a plurality of the packaging bag transfer mechanisms that simultaneously transfer a plurality of the packaging bags to the packaging unit (claim 2). The bag feeding device preferably has a pre-filling treatment device for performing pre-filling treatment on the continuous web of packaging bags (for example, a printing device for printing on the continuous web of packaging bags and a print inspection device for inspecting the printing on the continuous web of packaging bags, etc.) (claim 3). The bag feeding device preferably has a retention mechanism for retaining the continuous web of packaging bags (claim 4). The bag feeding device preferably has a punching device for punching the continuous web of packaging bags (claim 5). The bag feeding device may have a second cutting mechanism for dividing the continuous web of packaging bags into a plurality of pieces along the conveying direction (claim 6). The cutting mechanism or the second cutting mechanism may be a fusing mechanism (claim 7). The second cutting mechanism preferably has a sealing mechanism for sealing the edge portions of the continuous web of packaging bags divided along the conveying direction as the cutting occurs (claim 8). The second cutting mechanism is an ultrasonic cutting mechanism and has a horn side rotating body that rotates on one side of the continuous packaging bag body as the continuous packaging bag body is transported, and an anvil side rotating body that rotates on the other side of the continuous packaging bag body, and it is preferable that the horn side rotating body has a rotating blade in the center and the anvil side rotating body has an annular recess in the center that engages with the rotating blade (Claim 9). [Effects of the Invention]

[0009] According to the bag feeding device of claim 1, the feeding of bags to the packaging section can be done with less manpower or automatically, the device can be simplified, costs can be significantly reduced, and the space saving makes it suitable for feeding and packaging large volumes of bags. According to the bag supply device of claim 2, a plurality of packaging bags can be simultaneously supplied to the packaging section side, and the same packaging process can be performed on the plurality of packaging bags simultaneously. According to the bag feeding device of claim 3, the number of packaging steps in the packaging machine can be reduced, thereby making it possible to further save space in the packaging machine. According to the bag supply device of claim 4, even if a problem occurs during the packaging process, there is no need to simultaneously stop the packaging bag continuous body feed mechanism, and the continuous body of packaging bags can be held up to adjust the feed amount. According to the bag supply device of claim 5, desired packaging bags can be produced by punching the continuous body of packaging bags. According to the bag supply device of claim 6, the continuous strip of packaging bags can be divided into a plurality of continuous strips of packaging bags as it is conveyed. According to the bag supply device of the seventh aspect, the continuous string of packaging bags can be easily divided into individual packaging bags. According to the bag supply device of claim 8, the end portions of the divided continuous web of packaging bags can be sealed while being divided to form bags. According to the bag supply device of claim 9, a second cutting mechanism can be configured that can perform cutting and sealing simultaneously. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic perspective view illustrating an embodiment of a bag feeding and packaging machine of the present invention. [Figure 2] FIG. 10 is a perspective view illustrating another embodiment of a continuous sheet of packaging bags used in the bag feeding and packaging machine of the present invention. [Figure 3] FIG. 10 is a perspective view illustrating another embodiment of a continuous sheet of packaging bags used in the bag feeding and packaging machine of the present invention. [Figure 4] FIG. 10 is a perspective view illustrating another embodiment of a continuous sheet of packaging bags used in the bag feeding and packaging machine of the present invention. [Figure 5] FIG. 10 is a perspective view illustrating another embodiment of a continuous sheet of packaging bags used in the bag feeding and packaging machine of the present invention. [Figure 6] FIG. 10 is a schematic perspective view illustrating another embodiment of the bag feeding and packaging machine of the present invention. [Figure 7] FIG. 10 is a schematic perspective view illustrating another embodiment of the bag feeding and packaging machine of the present invention. [Figure 8] 8 is a perspective view for explaining another embodiment of a continuous body of packaging bags used in the bag feeding and packaging machine shown in FIG. 7. FIG. [Figure 9] FIG. 10 is a schematic perspective view illustrating another embodiment of the bag feeding and packaging machine of the present invention. [Figure 10] FIG. 10 is a schematic perspective view illustrating another embodiment of the bag feeding and packaging machine of the present invention. [Figure 11] FIG. 10 is a schematic perspective view illustrating another embodiment of the bag feeding and packaging machine of the present invention. [Figure 12] FIG. 10 is a schematic perspective view illustrating another embodiment of the bag feeding and packaging machine of the present invention. [Figure 13] FIG. 10 is a schematic perspective view illustrating another embodiment of the bag feeding and packaging machine of the present invention. [Figure 14] FIG. 10 is a schematic perspective view illustrating another embodiment of the bag feeding and packaging machine of the present invention. [Figure 15] FIG. 10 is a schematic perspective view illustrating another embodiment of the bag feeding and packaging machine of the present invention. [Figure 16] FIG. 10 is a schematic perspective view illustrating another embodiment of the bag feeding and packaging machine of the present invention. [Figure 17] FIG. 10 is a perspective view for explaining another embodiment of a continuous body of packaging bags used in the bag feeding and packaging machine of the present invention. [Figure 18] FIG. 10 is a perspective view for explaining another embodiment of a continuous body of packaging bags used in the bag feeding and packaging machine of the present invention. [Figure 19] 10 is a front view for explaining another embodiment of a continuous body of packaging bags used in the bag feeding and packaging machine of the present invention. FIG. [Figure 20] 10 is a front view for explaining another embodiment of a continuous body of packaging bags used in the bag feeding and packaging machine of the present invention. FIG. [Figure 21] 10 is a front view for explaining another embodiment of a continuous body of packaging bags used in the bag feeding and packaging machine of the present invention. FIG. [Figure 22] 10 is a front view for explaining another embodiment of a continuous body of packaging bags used in the bag feeding and packaging machine of the present invention. FIG. [Figure 23] 10A and 10B are explanatory diagrams for explaining another embodiment of a continuous packing bag used in the bag feeding and packaging machine of the present invention, in which (a) is a perspective view of a packing bag, and (b) is a side view of the continuous packing bag. [Figure 24] 10A and 10B are explanatory diagrams for explaining another embodiment of a continuous packing bag used in the bag feeding and packaging machine of the present invention, in which (a) is a perspective view of a packing bag, and (b) is a front view of the continuous packing bag. [Figure 25] 10 is a front view for explaining another embodiment of a continuous body of packaging bags used in the bag feeding and packaging machine of the present invention. FIG. [Figure 26] 10 is a front view for explaining another embodiment of a continuous body of packaging bags used in the bag feeding and packaging machine of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present invention has a continuous packaging bag feed mechanism 11 for feeding the continuous packaging bag web S, a cutting mechanism 12 for cutting the continuous packaging bag web S fed by the continuous packaging bag feed mechanism 11 into individual packaging bags a, and a packaging bag delivery mechanism 13 for delivering the packaging bags a cut by the cutting mechanism 12 to the packaging unit side, and because individual packaging bags are cut from the continuous packaging bag web S and fed, there is no need to manually or robotically remove the packaging bags from the box and line them up one by one on the conveyor, and no bag-making device is required. By handling the continuous packaging bag web, quality can be guaranteed and bag loss can be minimized, and a bag feeding device Q and a bag feeding and packaging machine P equipped with the same can be provided, which can feed bags to the packaging machine with less or no manpower, can simplify the device, and can significantly reduce costs, and are also suitable for large-volume bag feeding and packaging due to their space-saving design. [Example]

[0012] A bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to an embodiment shown in FIG. The bag feeding and packaging machine P equipped with this bag feeding device Q has a continuous packaging bag feed mechanism 11 through which the bag feeding device Q feeds the continuous packaging bag web S, a cutting mechanism 12 for cutting the continuous packaging bag web S fed by the continuous packaging bag feed mechanism 11 into individual packaging bags a, and a packaging bag delivery mechanism 13 for delivering the packaging bags a cut by the cutting mechanism 12 to the packaging unit side. Each component of the bag feeding and packaging machine P equipped with the bag feeding device Q will be described in detail below.

[0013] The bag feeding and packaging machine P equipped with the bag feeding device Q of this embodiment is an apparatus that opens the bag mouths of packaging bags a, fills them with packaged items, and seals them. The apparatus mass-produces packaging bags a (products) filled with packaged items by repeatedly performing the following at eight stations 1 to 8: a bag feeding process (Station 1) that supplies packaging bags 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, fills the packaging bag a with the packaged items, and vibrates the packaged items; a pushing / bottom vibrating process (Station 4) that pushes the packaged items into the packaging bag a and vibrates the packaged items; a pinching detection / empty bag discharge process (Station 5) that detects pinching and discharges empty bags from the machine; a top sealing / air venting process (Station 6) that horizontally top-seals the area near the bag mouth and vents 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 bags a filled with packaged items from the machine.

[0014] 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.

[0015] Although the bag feed and packaging machine P in this embodiment is a rotary type bag feed and packaging machine, the bag feed and packaging machine of the present invention is not limited to this and widely includes bag feed and packaging machines other than bag make-fill-seal machines, such as track-type bag feed and packaging machines and linear movement 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 appropriately modified in design depending on the packaging bag or the packaged item, etc.

[0016] In addition, 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.

[0017] The bag feeding device Q in the bag feeding and packaging machine P in this embodiment has a continuous packaging bag feed mechanism 11 for feeding the continuous packaging bag string S, a cutting mechanism 12 for cutting the continuous packaging bag string S fed by the continuous packaging bag feed mechanism 11 into individual packaging bags a, and a packaging bag transfer mechanism 13 for transferring the packaging bags a cut by the cutting mechanism 12 to the packaging section side (in this embodiment, a pair of grips g that move sequentially to station 1).

[0018] The continuum packaging bag feed mechanism 11 is for feeding the continuum packaging bag web S to the side (downstream side) where the packaging process is carried out, and in this embodiment the continuum packaging bag feed mechanism 11 has a first continuum packaging bag feed 14 provided on the upstream side and a second continuum packaging bag feed 15 provided on the downstream side. The first continuum packaging bag feed 14 and the second continuum packaging bag feed 15 each have a pair of feed rollers, and each pair of feed rollers is driven to rotate, have its rotation speed adjusted, and can be stopped by a servo motor device (not shown), so that the continuum packaging bag web S is appropriately fed to the side (downstream side) where the packaging process is carried out.

[0019] 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 form individual packaging bags in a packaging process or packaging machine, where the packaged items can be filled and sealed, and / or a long continuous body of packaging bags pre-fabricated 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) produced by a bag making machine, but also a long continuous body of individual packaging bags formed by welding. Furthermore, 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.

[0020] In addition, 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.

[0021] 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.

[0022] The differences in the bag shapes of the unit packaging bags that make up the continuous 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) is configured to control various devices within the bag supply device Q according to the bag shape based on the output signal from the mark sensor 16. For devices that do not have a mark sensor, bag pitch feed control is performed.

[0023] The bag supply device Q in this embodiment has a pre-filling treatment device for performing pre-filling treatment on the continuous web of packaging bags S. This pre-filling treatment device includes, for example, a printing device 17 for printing (for example, expiration date, date, etc.) on the continuous web of packaging bags S and a print inspection device 18 for inspecting the printing on the continuous web of packaging bags. By performing the printing process and print inspection process in the bag supply device Q in this way, the number of packaging processes on the packaging machine side or packaging department can be reduced, and the entire packaging machine can be made more space-saving. However, the pre-filling treatment device in this application is not limited to a printing device or a print inspection device, and broadly includes devices that perform pre-filling treatment on the continuous web of packaging bags S.

[0024] The bag supply device Q has a retention mechanism 19 (accumulation mechanism) for retaining the continuous web of packaging bags S. This eliminates the need to simultaneously stop the continuous web of packaging bags feed mechanism 11 even if a problem occurs during the packaging process, and also makes it possible to adjust the amount of the continuous web of packaging bags S fed downstream from the retention mechanism 19 depending on the situation.

[0025] 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.

[0026] 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.

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

[0028] The bag supply device Q has a continuous string of packaging bags storage section 23 for storing the continuous string of packaging bags S. This makes it possible to pay out the continuous string of packaging bags S stored in the continuous string of packaging bags storage section 23. Specifically, the continuous string of packaging bags storage section 23 in this embodiment is a box with a bottom that is open at the top end, and the continuous string of packaging bags S is stored in the continuous string of packaging bags storage section 23 in a folded state, and is configured to be paid out of the continuous string of packaging bags storage section 23 by the first continuous string of packaging bags feeder 14 and sent downstream.

[0029] The bag supply device Q has a cutting mechanism 12 for cutting the continuous web of packaging bags S fed by the continuous web of packaging bags feed mechanism 11 (specifically, the second continuous web of packaging bags feeder 15) into individual packaging bags a. This allows the continuous web of packaging bags a to be cut in a direction perpendicular to the conveying direction (feeding direction) and separated into individual packaging bags a. Note that the cutting mechanism 12 in this embodiment has a cutter provided in a direction perpendicular to the conveying direction (feeding direction) of the continuous web of packaging bags S, and this cutter moves up and down to cut the continuous web of packaging bags S, but the present invention is not limited to this. Any cutting mechanism, such as a fusing mechanism, that can cut the continuous web of packaging bags S and sequentially separate it into individual packaging bags a is included in the scope of the present invention.

[0030] The bag supply device Q has a packaging bag loading magazine 24 for loading the packaging bags a that have been individually separated from the continuous bag web S by the cutting mechanism 12. This allows the packaging bags a to be stacked and stocked, making it possible to appropriately adjust the timing of delivery to the packaging process.

[0031] The bag supply device Q has a positioning mechanism 25 for positioning the packaging bag a. This allows the packaging bag a to be positioned to prevent misalignment before being transferred to the packaging process. Specifically, the positioning mechanism 25 in this embodiment is provided downstream of the packaging bag loading magazine 24 and includes a positioning table 26 on which the packaging bag a is placed, a pair of widthwise positioning plates 27 that are provided so as to be movable inward and outward in the width direction of the packaging bag a, and a lengthwise positioning plate 28 that is 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 are configured to 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 toward the packaging bag a by reciprocating mechanisms (not shown), respectively, to position the packaging bag a.

[0032] 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.

[0033] The packaging bag transfer mechanism 13 is for transferring the packaging bag a to the station 1, and in this embodiment has a first bag capture section 31 for capturing the packaging bag a positioned on the positioning table 26, and a second bag capture section 32 for receiving the packaging bag a held by the first bag capture section 31 and then transferring it to the grip pair (bag gripping section) g.

[0034] The first bag capturing section 31 has a pivoting arm (bag capturing pipe: not shown) that captures the packaging bag a positioned on the positioning table 26 and rotates it to a vertical position, and the pivoting arm has a pair of suction cups 33 at its lower end that each adsorb the packaging bag a from the top side.

[0035] The first bag catching section 31 also 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.

[0036] The height correction mechanism 34 is designed to adjust the height of the suction cup 33 provided at the lower end of the pivot arm before being gripped by the grip pair (bag gripping portion) g, since the packaging bags a, which are captured by the suction cup 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, and to adjust 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).

[0037] The second bag capturing section 32 has a pair of gripping sections 35 configured to be able to clamp in order to receive a packaging bag a supported in a vertical position by the pivoting arm of the first bag capturing section 5, and a bag transport section 36 for transporting the packaging bag a captured by the pair of gripping sections 35 to the grip pair g.

[0038] As described above, the bag feed and packaging machine P equipped with the bag feeding device Q of the present invention has a continuous bag feed mechanism 11 through which the bag feeding device feeds the continuous bag web S, a cutting mechanism 12 for cutting the continuous bag web S fed by the continuous bag feed mechanism 11 into individual packaging bags a, and a packaging bag delivery mechanism 13 for delivering the packaging bags a cut by the cutting mechanism 12 to the packaging unit side. Because individual packaging bags a are cut from the continuous bag web S and fed, there is no need to manually or robotically remove the packaging bags from the box and line them up one by one on the conveyor, and no bag making device is required. This allows for labor-saving or unmanned feeding of bags to the packaging process, simplifies the device, and significantly reduces costs. The space-saving design makes this a bag feed and packaging machine equipped with a bag feeding device that is also suitable for large-volume bag feeding and packaging.

[0039] Next, a bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to another embodiment shown in FIG. The basic difference between the bag feed packaging machine P2 equipped with the bag feed device Q2 of this embodiment and the bag feed packaging machine P equipped with the above-described bag feed device Q is that the bag feed device Q2 of the bag feed packaging machine P2 does not have the packaging bag loading magazine 24 and the positioning mechanism 25, but has a packaging bag rotation mechanism 37 for correcting the inclination of the packaging bags a or changing the orientation of the packaging bags a. The same components as those of the bag feed packaging machine P equipped with the bag feed device Q are given the same reference numerals and their description will be omitted.

[0040] The packaging bag rotation mechanism 37 of this embodiment has a packaging bag holding mechanism 38 equipped with a pair of suction cups 38a and configured to be able to move up and down, move horizontally, and rotate while suctioning and holding the packaging bag a, and a camera 39 for detecting the attitude (tilt or orientation) of the packaging bag a, and the control unit is configured to correct or change the tilt or orientation of the packaging bag a by controlling the rotation of the packaging bag holding mechanism 38 based on the image from the camera 39. Thereafter, as with the bag feeding and packaging machine P equipped with the bag feeding device Q described above, the packaging bag a is received by the first bag capturing unit 31, and then handed over to the grip pair (bag gripping unit) g by the second bag capturing unit 32.

[0041] Further, a bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to another embodiment shown in FIG. The basic difference between the bag feed and packaging machine P3 equipped with the bag feed device Q3 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 Q uses a continuous web of packaging bags S that is a continuous web of packaging bags a arranged in the length direction but a single one arranged in the width direction, whereas the bag feed and packaging machine P3 equipped with the bag feed device Q3 uses a continuous web of packaging bags S2 that is a continuous web of packaging bags a6 arranged in both the length direction and the width direction. Due to this difference, the bag feed and packaging machine P3 equipped with the bag feed device Q3 has a second cutting mechanism 40 for dividing the continuous web of packaging bags S2 into a plurality of pieces along the conveyance 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 conveyance direction as it is cut, a plurality of packaging bag transfer 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 simultaneously performed on a plurality of packaging bags a at each of the packaging stations 1 to 8. The same components as those of the bag feeding and packaging machine P equipped with the bag feeding device Q are designated by the same reference numerals and will not be described.

[0042] Specifically, the second cutting mechanism 40 in this embodiment is an ultrasonic cutting mechanism, and has a horn-side rotor 42 that rotates on one side (upper side) of the continuous web of packaging bags S2 as the continuous web of packaging bags S2 is conveyed, and an anvil-side rotor 43 that rotates on the other side (lower side) of the continuous web of packaging bags S2, the horn-side rotor 42 has a rotary blade 42a in its center, and the anvil-side rotor 43 has an annular recess 43a in its center that meshes with the rotary blade 42a. When the horn-side rotor 42 and the anvil-side rotor 43 rotate as the continuous web of packaging bags S2 is conveyed, ultrasonic vibration energy cuts (cuts) the continuous web of packaging bags S2 along the conveyance between the rotary blade 42a and the annular recess 43a to divide it into a plurality of pieces (two pieces in this embodiment), and both sides of the rotary blade 42a and the annular recess 43a are welded (sealed). This allows the end portions of the divided continuous web of packaging bags to be sealed while being divided into bags.

[0043] 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.

[0044] A bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to another embodiment shown in FIG. 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.

[0045] Specifically, the bag feeding and packaging machine P4 equipped with the bag feeding device Q4 of this embodiment has two positioning mechanisms 25 in which the bag feeding device Q4 is arranged side by side, thereby enabling the positioning of the packaging bag a to be adjusted so as not to cause misalignment before being delivered to the packaging unit. 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 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 a6. The pair of widthwise positioning plates 27 and lengthwise positioning plate 28 are configured to position the packaging bag a by moving the packaging bag a placed on the positioning table 26 inward (toward the packaging bag a) from both sides in the width direction and one side in the length direction using reciprocating mechanisms (not shown).

[0046] A bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to another embodiment shown in FIG. The basic 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 bag feed and packaging machine P5 equipped with the bag feed device Q5 of this embodiment cuts the hanging continuous web of packaging bags S2 with cutting means 12 to produce packaging bags a and delivers them to the grip pair g. The same components as those of the bag feed and packaging machine P3 equipped with the bag feed device Q3 are designated by the same reference numerals and description thereof will be omitted.

[0047] A bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to another embodiment shown in FIG. The basic difference between the bag feed and packaging machine P6 equipped with the bag feed device Q6 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 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 feed device Q6 feeds the packaging bags a that make up the continuous web of packaging bags S with the bag openings facing upward (vertical), and the continuous web of packaging bags S is unwound from a coiled state. 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.

[0048] 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 station 1, making it possible to 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.

[0049] A bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to another embodiment shown in FIG. The basic difference between the bag feed and packaging machine P7 equipped with the bag feed device Q7 of this embodiment and the bag feed and packaging machine P6 equipped with the bag feed device Q6 described above is that the bag feed and packaging machine P7 equipped with the bag feed device Q7 has a plurality of (two in this embodiment) cutting mechanisms 12, and also has a plurality of (two in this embodiment) packaging bag transfer mechanisms 13 corresponding to the number of cutting mechanisms 12, and is configured so that a plurality of (two in this embodiment) packaging bags a are simultaneously transferred to station 1 by the plurality of packaging bag transfer mechanisms 13, and the same packaging process is performed on a plurality of packaging bags a simultaneously. 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.

[0050] A bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to another embodiment shown in FIG. 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 the bag feed and packaging machine P6 equipped with the bag feed device Q6 pays out the continuous web of packaging bags S from a coiled state, whereas the bag feed and packaging machine P8 equipped with the bag feed device Q8 pays out the continuous web of packaging bags S from a zigzag state. This allows the continuous web of packaging bags S to be paid out from a compact, space-saving state. The same components as those in 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.

[0051] A bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to another embodiment shown in FIG. 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 P equipped with the bag feed device Q9 of this embodiment is a rotary-type bag feed and packaging machine. In this way, the bag feed and packaging machine of the present invention is not limited to a rotary-type bag feed and packaging machine, but broadly includes bag feed and packaging machines other than a make-fill-seal machine.

[0052] A bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to another embodiment shown in FIG. 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. This allows the continuous web of packaging bags S to be fed from the compactly wound continuous web of packaging bags bobbin 44.

[0053] A bag supply and packaging machine equipped with a bag supply device of the present invention will be described with reference to another embodiment shown in FIG. The difference between the bag feed and packaging machine P11 equipped with the bag feed device Q11 of this embodiment and the bag feed and packaging machine P9 equipped with the bag feed device Q9 described above is that while the bag feed and packaging machine P9 equipped with the bag feed device Q9 has one cutting mechanism 12 and one packaging bag transfer mechanism 13, the bag feed and packaging machine P11 equipped with the bag feed 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, so that multiple (four 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. The same components as those of 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.

[0054] Next, a bag supply method using a continuous sheet of packaging bags (the operation of the bag supply device of the present invention and the bag supply and packaging machine equipped with the same) will be described. In the bag feeding and packaging machine P equipped with the bag feeding device Q shown in FIG. 1, a bag feeding method using a continuous sheet of packaging bags is characterized by including a conveying step of conveying the continuous sheet of packaging bags S by a continuous sheet of packaging bags feed mechanism 11, a cutting step of cutting the continuous sheet 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 side by a packaging bag delivery mechanism 13, whereby the packaging bags a are delivered to the packaging unit side (in this embodiment, a pair of grips g that move sequentially to station 1).

[0055] The packaging bag continuum feed mechanism 11 is used to feed the packaging bag continuum S to the side (downstream side) where the packaging process is carried out, 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.

[0056] In the conveying process in which the continuous packaging bag web S is conveyed by the continuous packaging bag web feed mechanism 11 in this embodiment, 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, have its rotation speed adjusted, and is stopped 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.

[0057] 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 on a 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 center along the length direction shown in FIG. 2, a flat bag a3 with a hole punch h shown in FIG. 3, 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.

[0058] The differences in the bag shapes of the unit packaging bags that make up the continuous packaging bag string S are recognized by the mark sensor 16 detecting the registration mark m printed on each unit packaging bag, and the control unit (not shown) controls various devices within the bag feeding and packaging machine P according to the bag shape based on the output signal from the mark sensor 16.

[0059] In the conveying process in the bag supply device Q of this embodiment, a printing process is carried out in which the printing device 17 prints on the continuous web of packaging bags S, and a print inspection process is carried out in which the printing on the continuous web of packaging bags S is inspected. By carrying out these processes in the bag supply process, the number of packaging processes in the packaging section can be reduced, and the packaging machine can be made more space-saving.

[0060] In the conveying process in 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.

[0061] 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.

[0062] 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.

[0063] In the conveying process in the bag supply device Q of this embodiment, a punching process is performed on the continuous web of packaging bags S. By this process, the continuous web of packaging bags S is punched during the conveying process, and desired packaging bags can be produced.

[0064] Specifically, the bag supply device Q has a punching device (e.g., a punch) 22 for punching the continuous packaging bag web S, thereby enabling 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.

[0065] In the conveying process in the bag feeding device Q of this embodiment, the continuous web of packaging bags S is fed 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 fed out smoothly from the continuous web of packaging bags storage section 23.

[0066] 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.

[0067] 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.

[0068] In addition, the cutting mechanism 12 in this embodiment 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.

[0069] In the bag supply device Q of this embodiment, in the transfer step in which the packaging bags a cut by the cutting mechanism 12 are transferred to the packaging unit by the packaging bag transfer mechanism 13, a loading step 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 step, 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.

[0070] In the transfer process in the bag supply device Q of this embodiment, a positioning process for positioning the packaging bag a is performed. This process allows adjustment of the packaging bag a so that it does not shift in position on the packaging unit side before being transferred to the packaging unit side.

[0071] 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).

[0072] 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.

[0073] Furthermore, the transfer process in the bag feeding device Q of this embodiment is for sequentially transferring packaging bags a to grip pairs 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 the grip pair g.

[0074] 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.

[0075] 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.

[0076] 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).

[0077] 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.

[0078] As described above, the bag feeding and packaging machine P equipped with the bag feeding device Q of this embodiment has a conveying step of conveying the continuous string of packaging bags S by the 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 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 string of packaging bags S and fed, 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 feeding of bags to the packaging unit, simplifies the device, significantly reduces costs, and enables bags to be fed by a bag feeding method that is suitable for large-volume bag feeding and packaging due to the space-saving design.

[0079] Next, the operation of the bag feeding and packaging machine P2 equipped with the bag feeding device Q2 shown in FIG. 6 (bag feeding method using a continuous body of packaging bags) will be described. The basic difference between the bag feed packaging machine P2 equipped with the bag feed device Q2 of this embodiment and the bag feed packaging machine P equipped with the above-described bag feed device Q is that the transfer process in the bag feed device Q2 of the bag feed packaging machine P2 does not include a loading process in which packaging bags a cut by the cutting mechanism 12 are loaded onto the packaging bag loading magazine 24, or a positioning process in which the packaging bags a are positioned by the positioning mechanism 25, but includes a correction change process in which the inclination of the packaging bags a is corrected by the packaging bag rotation mechanism 37 or the orientation of the packaging bags a is changed. The same components as those in the bag feed packaging machine P equipped with the bag feed device Q are designated by the same reference numerals, and description thereof will be omitted.

[0080] In the correction and change process of this embodiment, the 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 the packaging bag a, and the packaging bag holding mechanism 38 has a camera 39 for detecting the tilt or orientation of the packaging bag a, and the control unit corrects or changes the tilt or orientation of the packaging bag a by controlling the rotation of the packaging bag holding mechanism 38 based on the image from the camera 39. Thereafter, as with the bag feeding and packaging machine P equipped with the bag feeding device Q, the packaging bag a is received by the first bag capturing unit 31 and then handed over to the grip pair (bag gripping unit) g by the second bag capturing unit 32.

[0081] Next, the operation of the bag feeding and packaging machine P3 equipped with the bag feeding device Q3 shown in FIG. 7 (bag feeding method using a continuous sheet of packaging bags) will be described. The bag feed and packaging machine P3 equipped with the bag feed device Q3 of this embodiment differs fundamentally from the bag feed and packaging machine P equipped with the bag feed device Q described above in that the bag feed and packaging machine P equipped with the bag feed device Q uses a continuous web of packaging bags S consisting of a plurality of packaging bags a arranged in the length direction but a single one arranged in the width direction, whereas the bag feed and packaging machine P3 equipped with the bag feed device Q3 uses a continuous web of packaging bags S2 consisting of a plurality of packaging bags a6 arranged in the width direction. Due to this difference, the bag feed and packaging machine P3 equipped with the bag feed device Q3 has a second cutting mechanism 40 for dividing the continuous web of packaging bags S2 into a plurality of pieces along the conveyance direction, a sealing mechanism 41 for sealing the edge portions of the continuous web of packaging bags S2 divided along the conveyance direction as the second cutting mechanism 40 cuts the pieces, a plurality of packaging bag transfer 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 simultaneously performed on a plurality of packaging bags a at each of the packaging stations 1 to 8. The same components as those of the bag feeding and packaging machine P equipped with the bag feeding device Q are designated by the same reference numerals and will not be described.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] 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.

[0086] The operation of the bag feeding and packaging machine P4 equipped with the bag feeding device Q4 shown in FIG. 9 (the bag feeding method using a continuous sheet of packaging bags) 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.

[0087] 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.

[0088] The operation of the bag feeding and packaging machine P5 equipped with the bag feeding device Q5 shown in FIG. 10 (the bag feeding method using a continuous sheet of packaging bags) 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.

[0089] The operation of the bag feeding and packaging machine P6 equipped with the bag feeding device Q6 shown in FIG. 11 (bag feeding method using a continuous sheet of packaging bags) 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.

[0090] 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 station 1, making it possible to 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.

[0091] The operation of the bag feeding and packaging machine P7 equipped with the bag feeding device Q7 shown in FIG. 12 (bag feeding method using a continuous sheet of packaging bags) 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.

[0092] The operation of the bag feeding and packaging machine P8 equipped with the bag feeding device Q8 shown in FIG. 13 (the bag feeding method using a continuous sheet of packaging bags) 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.

[0093] The operation of the bag feeding and packaging machine P9 equipped with the bag feeding device Q9 shown in FIG. 14 (the bag feeding method using a continuous sheet of packaging bags) 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.

[0094] The operation of the bag supply and packaging machine P10 equipped with the bag supply device Q10 shown in FIG. 15 (the bag supply method using a continuous sheet of packaging bags) 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.

[0095] The operation of the bag feeding and packaging machine P11 equipped with the bag feeding device Q11 shown in FIG. 16 (the bag feeding method using a continuous sheet of packaging bags) 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.

[0096] Further, other embodiments of the continuous bag web used in the bag feeding and packaging machine of 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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 a single 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 cutting mechanism 12 cuts the single welded portion 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 a packaging bag delivery mechanism 13.

[0102] The continuous web of packaging bags S8 shown in Fig. 22 is made up of palm-seamed (back-sealed) type packaging bags a connected in the width 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. The continuous web of packaging bags S8 is then conveyed downstream by, for example, the bag feeding device Q9 described above, with the width direction of the packaging bags a as the traveling direction, and 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, although the continuous web of packaging bags S8 in this embodiment is made up of palm-seamed (back-sealed) type packaging bags a connected in the width direction, a continuous web of packaging bags formed by welding a plurality of palm-seamed (back-sealed) type packaging bags a in the length direction or in the length direction and width direction is also included in the category of continuous webs of packaging bags.

[0103] 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 together 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 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.

[0104] The continuous web of packaging bags S10 shown in Fig. 24 is made up of packaging bags (gusseted self-standing square-bottom 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 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 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 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.

[0105] 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 together 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 also falls within the category of a continuous web of packaging bags.

[0106] 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.

[0107] 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]

[0108] 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 packaging bag transfer mechanism for transferring the packaging bags cut by the cutting mechanism to a packaging unit where the packaging bags are filled with the packaged items; and a packaging bag transfer mechanism for transferring the packaging bags cut by the cutting mechanism to a packaging unit where the packaging bags are filled with the packaged items. The packaging bag transfer mechanism is characterized in that the packaging bag is fed from a coiled state with the bag openings facing upward and is transported by the packaging bag transfer mechanism with the bag openings facing upward, the packaging bag is cut by the cutting mechanism before being filled with the packaged items, and the cut packaging bags are transferred to the packaging unit by the packaging bag transfer mechanism with the bag openings facing upward.

2. 2. The bag supply device according to claim 1, wherein the bag supply device has a plurality of the cutting mechanisms, and the packaging bag transfer mechanism has a plurality of the packaging bag transfer mechanisms that simultaneously transfer a plurality of the packaging bags to the packaging unit.

3. 3. The bag supply device according to claim 1, further comprising a pre-filling treatment device for performing a pre-filling treatment on the continuous web of packaging bags.

4. 4. The bag supply device according to claim 1, further comprising a retaining mechanism for retaining the continuous string of packaging bags.

5. 5. The bag supply device according to claim 1, further comprising a punching device for punching the continuous string of packaging bags.

6. 6. The bag supply device according to claim 1, further comprising a second cutting mechanism for dividing the continuous web of packaging bags into a plurality of pieces along the conveying direction.

7. The bag supply device according to claim 6 , wherein the cutting mechanism or the second cutting mechanism is a fusion cutting mechanism.

8. The bag supply device according to claim 6, wherein the second cutting mechanism includes a sealing mechanism that seals the edge portions of the continuous web of packaging bags divided along the conveyance direction as the cutting takes place.

9. 9. The bag feeding device according to claim 8, wherein the second cutting mechanism is an ultrasonic cutting mechanism and has a horn-side rotating body that rotates on one side of the continuous body of packaging bags as the continuous body of packaging bags is conveyed, and an anvil-side rotating body that rotates on the other side of the continuous body of packaging bags, the horn-side rotating body having a rotary blade in its center, and the anvil-side rotating body having an annular recess in its center that meshes with the rotary blade.

Images