Bag body feeding device

Abstract

To provide a bag body feeding device for improving convenience.SOLUTION: A bag body feeding device 1 includes: a casing 100 having a bag body discharge port 111; a bag body roll 210 provided within the casing 100 and wound with a plurality of bag bodies b via a continuous predetermined breaking line; and a delivery mechanism 230 capable of delivering the bag bodies b one by one from the bag body discharge port 111. That is, the bag body feeding device 1 is provided with the delivery mechanism 230 that can deliver the bag bodies b one by one from the bag body discharge port 111. This makes it possible to automatically feed the bag bodies b one by one, thereby improving convenience.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a bag supplying device capable of supplying bags. [Background technology]

[0002] A bag supplying device capable of supplying bags is known in the art (see Patent Document 1). In this bag supplying device, a continuous bag string consisting of a plurality of bags connected together via a planned tear line is arranged so that the bags can be manually removed one by one. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 7098028 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional bag supplying devices are unable to automatically supply bags, which may reduce convenience. An object of the present invention is to improve convenience. [Means for solving the problem]

[0005] In order to achieve the above object, the bag body supplying device of the first invention is characterized by comprising a casing having an outlet, a roll arranged within the casing and on which a plurality of continuous bag bodies are wound with a planned breaking line interposed therebetween, and a delivery mechanism capable of delivering the bag bodies one by one from the outlet. The bag supply device according to the first aspect of the present invention is equipped with a delivery mechanism that can deliver bags one by one from the outlet, which makes it possible to automatically supply bags one by one, thereby improving convenience. Here, the bag body supplying device corresponds, for example, to the bag body supplying device 1 described later. The discharge port corresponds, for example, to the bag body discharge port 111 described later. The casing corresponds, for example, to the casing 100 described later. The planned tear line corresponds, for example, to the planned tear line described later. The bag corresponds, for example, to the bag body b described later. The roll corresponds, for example, to the bag body roll 210 described later. The delivery mechanism corresponds, for example, to the delivery mechanism 230 described later.

[0006] The bag body supplying device of the second invention is characterized in that, in the bag body supplying device of the first invention, it is provided with a pair of axial members that are detachable from the core of the roll, and the roll is rotatably arranged within the casing via the pair of axial members. The bag supply device according to the second aspect of the present invention includes a pair of shaft members that are detachable from the core of the roll, which allows for the placement of rolls of bags of various widths by providing shaft members according to the width of the bags. Here, the shaft member corresponds to, for example, the shaft member 220 described below.

[0007] The bag body supplying device of the third invention is characterized in that, in the bag body supplying device of the first or second invention, it is provided with a resistance force applying mechanism that applies resistance force to the rotation of the roll associated with the delivery of the bag body by the delivery mechanism. In the bag body supplying device according to the third aspect of the present invention, it is possible to prevent problems caused by the bag body being bent between the roll and the delivery mechanism. Here, the resistance force applying mechanism corresponds to, for example, a support roller 254, which will be described later.

[0008] The bag body supplying device according to the fourth invention is the bag body supplying device according to the first or second invention, characterized in that it is provided with a detection means for detecting a decrease in the number of bags wound around the roll. The bag body supplying device according to the fourth aspect of the present invention makes it possible to easily replenish bags. Here, the detecting means corresponds to, for example, a bag shortage detection sensor 244, which will be described later. [Effects of the Invention]

[0009] According to the present invention, it is possible to improve convenience. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view showing a state in which a bag body supplying device 1 is viewed from above. [Figure 2] FIG. 2 is a perspective view showing the bag body supplying device 1 as viewed from below. [Figure 3] FIG. 2 is a perspective view showing the bag supplying device 1 with the opening / closing door 112 removed. [Figure 4] FIG. 2 is a perspective view showing the main unit 200 as viewed from the right. [Figure 5] FIG. 2 is a perspective view showing the main unit 200 as seen from the left. [Figure 6] 2 is a perspective view showing a shaft member 220 attached to a bag roll 210. FIG. [Figure 7] FIG. 2 is a diagram showing a state in which some members are removed from the main unit 200. [Figure 8] 10 is a diagram illustrating the arrangement of the bag body b in the delivery mechanism 230. FIG. [Figure 9] 3 is a block diagram showing the configuration of a control system of the bag body supplying device 1. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] (Configuration of bag supply device 1) Hereinafter, a bag body supplying device 1 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the bag supplying device 1 as viewed from above. FIG. 2 is a perspective view of the bag supplying device 1 as viewed from below. FIG. 3 is a perspective view of the bag supplying device 1 with the opening / closing door 112 removed. FIG. 4 is a perspective view of the main unit 200 as viewed from the right. FIG. 5 is a perspective view of the main unit 200 as viewed from the left. FIG. 6 is a perspective view of the shaft member 220 attached to the bag roll 210. FIG. 7 is a view showing the main unit 200 with some members removed. Note that FIG. 7 shows the main unit 200 with the left side plate 241, left operating lever 246, etc. removed. As shown in FIGS. 1 to 3, the bag supplying device 1 includes a casing (outer packaging) 100, a main unit 200, and a control board 300 (see FIG. 9). The casing 100 includes an upper casing 110 and a lower casing 120 . The upper casing 110 is formed in a box shape. The upper casing 110 protrudes toward the front side relative to the lower casing 120. A bag body discharge outlet 111 is provided on the lower surface of the upper casing 110. The bag body discharge outlet 111 is a through-hole that extends linearly in the left-right direction (a through-hole that connects the inside and outside of the upper casing 110). The front and top surfaces of the upper casing 110 are configured as opening / closing doors 112 that can be opened and closed. The opening / closing doors 112 can be opened upward.

[0012] The lower casing 120 is formed in a box shape. On the front surface of the lower casing 120, a coin insertion port 121, a bag detection sensor 122, a right opening / closing door 123, and a central opening / closing door 124 are provided. The coin insertion unit 121 allows a user to insert coins, and in response to detection of the insertion of a coin, outputs a predetermined detection signal to the control board 300. The coin insertion unit 121 can be realized by a coin selector or the like. The bag detection sensor 122 is disposed below the bag discharge outlet 111. The bag detection sensor 122 outputs a predetermined detection signal to the control board 300 in response to detection of the bag b being supplied (discharged) (hanging) from the bag discharge outlet 111. The bag detection sensor 122 can be realized by an ultrasonic sensor or the like. The right opening / closing door 123 is provided below the coin insertion portion 121. Inside the right opening / closing door 123, a control board 300 is housed. The central opening / closing door 124 is provided below the bag discharge port 111. A spare (replacement) bag roll 210 can be stored inside the central opening / closing door 124.

[0013] As shown in FIG. 3, the main unit 200 is disposed inside the upper casing 110. A pair of slide rails 113 is provided on the bottom surface of the upper casing 110. Each slide rail 113 extends in the front-to-rear direction. The main unit 200 is attached to the bottom surface of the upper casing 110 via the pair of slide rails 113. This allows the main unit 200 to be pulled out toward the front side of the upper casing 110. That is, in this embodiment, with the opening / closing door 112 open, the main unit 200 can be pulled out to the outside (front side) of the upper casing 110 by moving the main unit 200 toward the front side. This allows the bag roll 210 to be easily installed. As shown in FIGS. 4 and 5, the main unit 200 includes a bag roll 210 and a delivery mechanism 230. The bag roll 210 is constructed by winding a sheet material (continuous body) consisting of a plurality of bags b connected together via planned break lines around a cylindrical core c. The planned break lines are constructed by slits such as perforations or partial cuts. Each bag b has a predetermined gusset in a folded state. In this embodiment, each bag b has a hole (hereinafter referred to as a "handle hole") that serves as a handle. In this embodiment, each bag b is made of a resin material containing 25% or more biomass plastic. Each bag b has been subjected to an anti-static treatment (anti-static processing).

[0014] The bag roll 210 is disposed in a delivery mechanism 230 via a pair of shaft members 220 . Each shaft member 220 is made of resin. Each shaft member 220 is formed in a generally cylindrical shape as a whole. As shown in Fig. 6, each shaft member 220 includes a cylindrical support portion 221, a cylindrical shaft portion 222, and a disk-shaped flange portion 223 provided between the support portion 221 and the shaft portion 222. The support portion 221, the shaft portion 222, and the flange portion 223 are arranged coaxially (arranged so that the central axis forms a single axis). Of the pair of shaft members 220, one shaft member 220 is attached to one end of the bag body roll 210 in the direction in which the central axis (core) of the bag body roll 210 extends, and the other shaft member 220 is attached to the other end of the bag body roll 210 in the direction in which the central axis (core) of the bag body roll 210 extends. At this time, each shaft member 220 is attached to each end of the bag body roll 210 in the direction in which the central axis (core) of the bag body roll 210 extends, by press-fitting (inserting) the support portion 221 into the inside of the core material c of the bag body roll 210. When the pair of shaft members 220 is attached to the bag body roll 210, the pair of shaft members 220 and the bag body roll 210 are arranged coaxially. Then, the bag body roll 210 is installed in the feed mechanism 230 by inserting each shaft member 220 into a bearing hole 243 described later. In particular, in this embodiment, multiple types of shaft members 220 are prepared according to the width of the bag body roll 210 (bag body b) to be used. For example, a first bag body roll 210 and a second bag body roll 210 having a width (dimension in the direction in which the central axis extends) larger than that of the first bag body roll 210 are prepared as the bag body roll 210. Furthermore, a first shaft member 220 corresponding to the first bag body roll 210 and a second shaft member 220 corresponding to the second bag body roll 210 are prepared as the shaft members 220. The flange portion 223 of the first shaft member 220 is configured to be longer than that of the second shaft member 220. This makes it possible to install bag body rolls 210 (bag bodies b) of various widths in the delivery mechanism 230 by using the shaft member 220 corresponding to the bag body roll 210.

[0015] As shown in FIGS. 4, 5, and 7, the feed mechanism 230 includes a base 240, a guide roller 251, a drive roller 252, a driven roller 253, and a support roller 254. The base 240 includes a pair of side plates 241 and a frame 242 connecting the pair of side plates 241. Each side plate 241 is formed in a flat plate shape. The pair of side plates 241 are arranged to face each other. Each side plate 241 is provided with a bearing hole 243. The bearing hole 243 is formed as a notch with an open top and extends in the vertical direction. The bearing hole 243 of each side plate 241 can rotatably support the shaft portion 222 of the shaft member 220. At this time, the shaft portion 222 is supported within the bearing hole 243 so as to be movable in the vertical direction. As a result, as will be described later, as the remaining amount of bag body b wound around the bag body roll 210 decreases (i.e., as the outer diameter of the bag body roll 210 decreases), the shaft portion 222 moves to a lower position within the bearing hole 243. The bag body roll 210 is arranged so that its central axis extends in the left-right direction.

[0016] The right side plate 241 is provided with a bag shortage detection sensor 244 that detects when the remaining amount of bags b wound around the bag roll 210 decreases. Specifically, the out-of-bag detection sensor 244 can be configured using a photosensor or the like. The out-of-bag detection sensor 244 includes a light-emitting unit and a light-receiving unit that receives light emitted from the light-emitting unit. The out-of-bag detection sensor 244 outputs a detection signal to the control board 300 (sets the pulse signal to a high level) in response to the light-receiving unit receiving (detecting) the light emitted from the light-emitting unit, and stops outputting the detection signal to the control board 300 (sets the pulse signal to a low level) when the light-receiving unit does not receive (detect) the light emitted from the light-emitting unit. Further, a rocking plate 245 is provided on the right side plate 241. The rocking plate 245 is formed in a rod shape with a predetermined length. The rocking plate 245 is disposed so as to extend in the front-to-rear direction. The rocking plate 245 is attached to the right side plate 241 via a rotation shaft 245a provided in approximately the center in the longitudinal direction. The rocking plate 245 is capable of rocking around the rotation shaft 245a. The rear end of the rocking plate 245 is disposed in a position overlapping with the bearing hole 243. The front end of the rocking plate 245 is disposed below the bag empty detection sensor 244. The front end of the rocking plate 245 is configured to be heavier than the rear end. As a result, when no external force is applied to the rocking plate 245, the front end is lowered and the rear end is raised. Then, as the remaining amount of bags b wound around bag roll 210 decreases (i.e., as the outer diameter of bag roll 210 becomes smaller), shaft 222 moves to a lower position, and the upper surface of the rear end of swing plate 245 is pressed down by shaft 222, causing the front end of swing plate 245 to rise. Furthermore, when the remaining amount of bags b wound around bag roll 210 falls below a predetermined amount, the front end of swing plate 245 enters between the light-emitting unit and light-receiving unit of bag-out detection sensor 244, blocking the light-receiving unit from receiving the light emitted from the light-emitting unit. This causes bag-out detection sensor 244 to stop outputting a detection signal. As described above, the control board 300 can grasp the reduction in the remaining amount of bags b wound around the bag roll 210 based on the input status of the detection signal from the bag-out detection sensor 244. In this embodiment, a bag-out notification lamp (not shown) is provided in the lower casing 120. The control board 300 starts to turn on the bag-out lamp in response to the cessation of the input of the detection signal from the bag-out detection sensor 244. This allows the operator to grasp the reduction in the remaining amount of bags b wound around the bag roll 210. Furthermore, in this embodiment, when the input of the detection signal from the bag-out detection sensor 244 to the control board 300 is halted, the bag supply operation, which will be described later, is not performed.

[0017] The guide roller 251 is disposed on the front side of the bag roll 210. The guide roller 251 is rotatably supported by a pair of side plates 241. The guide roller 251 is disposed so that its central axis extends in the left-right direction. In other words, the guide roller 251 is disposed parallel to the bag roll 210. The outer circumferential surface of the guide roller 251 is made of an elastic material such as rubber. In particular, the guide roller 251 is subjected to an anti-static treatment (anti-static treatment). The drive roller 252 is disposed below the guide roller 251. In particular, the drive roller 252 is disposed above the bag discharge port 111. The drive roller 252 is rotatably supported by a pair of side plates 241. The drive roller 252 is disposed so that its central axis extends in the left-right direction. That is, the drive roller 252 is disposed parallel to the bag roll 210. The outer circumferential surface of the drive roller 252 is made of an elastic material such as rubber. In particular, the drive roller 252 is subjected to an anti-static treatment (anti-static treatment). A motor 252a is provided on the right side plate 241. A brushless motor can be used as the motor 252a. The driving of the motor 252a is controlled by the control board 300. The drive roller 252 is driven (rotated) by the motor 252a.

[0018] The driven roller 253 is disposed in front of the drive roller 252. The outer peripheral surface of the driven roller 253 is made of an elastic material such as rubber. The driven roller 253 is subjected to anti-static treatment (anti-static treatment). The driven roller 253 is disposed so that its central axis extends in the left-right direction. In other words, the driven roller 253 is disposed parallel to the bag roll 210. In particular, the driven roller 253 is biased in a direction approaching the drive roller 252. Specifically, an operation lever 246 is provided on each side plate 241. The operation lever 246 is formed in a rod shape of a predetermined length. The operation lever 246 is arranged to extend in the vertical direction. The operation lever 246 is attached to the side plate 241 via a rotation shaft 246a provided at the lower end in the longitudinal direction. The upper end of the operation lever 246 can swing around the rotation shaft 246a. The driven roller 253 is rotatably supported by the pair of operation levers 246. In particular, the upper end of each operation lever 246 is biased toward the rear side by a spring 246b. As a result, in a state where no external force is applied, the upper ends of the pair of operation levers 246 are urged toward the rear side, and as a result, the driven roller 253 is urged in a direction approaching the drive roller 252, and the outer circumferential surface of the driven roller 253 is pressed against the outer circumferential surface of the drive roller 252. Then, the operator can move the driven roller 253 away from the drive roller 252 by pulling out the upper ends of the pair of operation levers 246 toward the front side.

[0019] The support roller 254 is disposed below the bag roll 210. The support roller 254 is rotatably supported by a pair of side plates 241. The support roller 254 is disposed so that its central axis extends in the left-right direction. In other words, the support roller 254 is disposed parallel to the bag roll 210. The outer circumferential surface of the support roller 254 is made of an elastic material such as rubber. In particular, the support roller 254 is subjected to an anti-static treatment (anti-static treatment). The support rollers 254 support the lower end surface of the bag body roll 210. In other words, the bag body roll 210 is placed on the upper surface of the support rollers 254 when it is placed in the feed-out mechanism 230. That is, as described above, each bearing hole 243 extends in the up-down direction. As a result, when the bag body roll 210 is placed in the feed-out mechanism 230, the lower surface of the bag body roll 210 is supported by the upper surface of the support rollers 254, and the shafts 222 inserted in each bearing hole 243 are raised above the lower ends of the bearing holes 243. Furthermore, the outer diameter of the bag body roll 210 increases as the remaining amount of wound bag body b in the bag body roll 210 increases, and therefore the shafts 222 inserted in each bearing hole 243 are positioned (supported) at an upper position within the bearing holes 243. On the other hand, as the remaining amount of bag body b wound around the bag body roll 210 decreases, the outer diameter of the bag body roll 210 becomes smaller, and therefore the shaft portion 222 inserted into each bearing hole 243 is positioned (supported) at a lower position within the bearing hole 24. In this embodiment, the support roller 254 is connected to the drive roller 252 via a belt 254a. As a result, the rotational force of the drive roller 252 is transmitted to the support roller 254 via the belt 254a. Therefore, the support roller 254 rotates as the drive roller 252 rotates in the feed direction (in this embodiment, clockwise when viewed from the left side, counterclockwise when viewed from the right side). At this time, the rotation direction of the support roller 254 is the same as the rotation direction of the drive roller 252. As a result, as will be described later, the rotation direction of the support roller 254, which rotates as the drive roller 252 rotates in the feed direction, is the same as the rotation direction of the bag body roll 210, which rotates as the drive roller 252 rotates in the feed direction. In this case, the outer circumferential surface of the lower surface of the bag body roll 210 moves as if being pulled in from the front side to the back side, whereas the outer circumferential surface of the upper surface of the support roller 254 moves as if being pushed out from the back side to the front side. Therefore, the rotation of the support roller 254 makes it possible to apply resistance to the rotation of the bag body roll 210 that accompanies the delivery of the bag body b by the delivery mechanism 230, and as a result, it becomes possible to prevent the bag body b from bending between the bag body roll 210 and the delivery mechanism 230.

[0020] The delivery mechanism 230 is also provided with a plurality of charge-removing brushes 255. Each charge-removing brush 255 is grounded to remove static electricity from the bag body b. Each charge-removing brush 255 can be made of conductive gold fiber, carbon fiber, or the like. In this embodiment, the anti-static brush 255 is disposed above the drive roller 252 (at a position between the guide roller 251 and the drive roller 252) and below the drive roller 252 (at a position between the drive roller 252 and the bag body discharge outlet 111).

[0021] (Method of Arranging the Bag Roll 210 in the Delivery Mechanism 230) Next, a method for arranging the bag roll 210 in the delivery mechanism 230 will be described. Fig. 8 is a diagram illustrating the arrangement of the bag body b in the delivery mechanism 230. Fig. 8 shows a cross section of the delivery mechanism 230 along a plane parallel to the side surface (a plane perpendicular to the front and top surfaces). The arrangement of the bag body roll 210 in the delivery mechanism 230 is performed by an operator. To arrange the bag body roll 210 in the delivery mechanism 230, first, a bag body roll 210 with a sufficient remaining amount of wound bag bodies b is prepared, and shaft members 220 are attached to each end of the bag body roll 210. To do this, the shaft members 220 are attached by press-fitting (inserting) the support portions 221 of the shaft members 220 into the core material c of the bag body roll 210 at each end face of the bag body roll 210. Next, the opening and closing door 112 is opened, and the main unit 200 is moved toward the front side and pulled out to the outside (front side) of the upper casing 110. Next, the bag body roll 210 to which the shaft members 220 are attached is placed in the delivery mechanism 230. To do this, the shaft portions 222 of the shaft members 220 are inserted into the bearing holes 243 of the side plates 241, thereby placing the bag body roll 210 in the delivery mechanism 230. At this time, the bag body roll 210 is placed so that the bag bodies b are delivered from the upper surface side (so that the bag bodies b are delivered from the back side to the front side on the upper surface side). Next, the tip of bag body b wound around bag body roll 210 is pulled out and hooked onto the upper surface side of guide roller 251, and then passed between drive roller 252 and driven roller 253. At this time, by pulling out the upper ends of the pair of operation levers 246 toward the front side, bag body b can be passed between drive roller 252 and driven roller 253 in a state where driven roller 253 is separated from drive roller 252. Next, the main unit 200 is moved toward the rear side and returned to the inside of the upper casing 110, and then the opening and closing door 112 is closed. With the above, the arrangement of the bag roll 210 in the delivery mechanism 230 is completed.

[0022] As shown in Figure 8, when the placement of the bag body roll 210 in the delivery mechanism 230 is complete, the tip of the bag body b pulled out from the bag body roll 210 is hooked on the upper surface side of the guide roller 251, passes between the drive roller 252 and the driven roller 253, and then reaches the bag body discharge outlet 111. As a result, by driving the motor 252a and rotating the drive roller 252 in the feed direction (in this embodiment, clockwise when viewed from the left side, counterclockwise when viewed from the right side), the bag body b sandwiched between the drive roller 252 and the driven roller 253 is fed downward, and as a result, the bag body b wound around the bag body roll 210 is pulled out, causing the bag body roll 210 to rotate (be driven) in the feed direction (in this embodiment, clockwise when viewed from the left side, counterclockwise when viewed from the right side). At this time, the support roller 254 rotates in a direction that applies resistance to the rotation of the bag body roll 210 accompanying the pulling out of the bag body b, thereby suppressing the occurrence of bending of the bag body b between the bag body roll 210 and the feed mechanism 230. As described above, the bags b wound around the bag roll 210 can be sequentially discharged from the bag discharge port 111 by driving the motor 252a.

[0023] (Control system configuration) Next, the configuration of the control system of the bag supplying device 1 will be described. FIG. 9 is a block diagram showing the configuration of a control system of the bag supplying device 1. As shown in FIG. The bag body supplying device 1 includes a control board 300. The control board 300 is disposed inside the lower casing 120. As shown in FIG. 9 , the control board 300 includes a processing unit 310, a storage unit 320, and a storage medium 330. The storage unit 320 serves as a work area for the processing unit 310. The storage unit 320 can be realized by a semiconductor memory, an HDD, an SSD, an optical disk device, or the like. The storage medium 330 stores programs, data, etc. The processing unit 310 executes various processes based on the programs and data stored in the storage medium 330. The storage medium 330 can be realized by an optical disk, a HDD, a semiconductor memory, etc. The processing unit 310 can be realized by a processor and a memory. The processing unit 310 executes processing required for supplying the bag body b based on detection signals input from the coin insertion unit 121, detection signals input from the bag body detection sensor 122, detection signals input from the bag empty detection sensor 244, detection signals input from the origin detection sensor 115 described below, and programs and data stored in the memory unit 320. In particular, the processing unit 310 controls the driving of the motor 252a based on detection signals input from various sensors.

[0024] (Control of supply of bag body b by bag body supply device 1) Next, the control of supply of the bag body b by the bag body supplying device 1 will be described. In this embodiment, based on a detection signal input from the origin detection sensor 115, the bags b can be supplied (discharged) one by one from the bag discharge port 111. That is, an origin detection sensor 115 is provided inside the upper casing 110 (see FIG. 3). The origin detection sensor 115 is disposed between the drive roller 252 and the bag discharge port 111. The origin detection sensor 115 can be configured using a photosensor or the like. The origin detection sensor 115 includes a light-emitting unit and a light-receiving unit that receives light emitted from the light-emitting unit. The origin detection sensor 115 outputs a detection signal to the control board 300 (sets the pulse signal to a high level) in response to the light-receiving unit receiving (detecting) the light emitted from the light-emitting unit, and stops outputting the detection signal to the control board 300 (sets the pulse signal to a low level) when the light-receiving unit does not receive (detect) the light emitted from the light-emitting unit. The origin detection sensor 115 detects the handle hole of each bag b fed out by the feed-out mechanism 230. That is, the light-emitting unit and light-receiving unit of the origin detection sensor 115 are arranged to sandwich the bag b fed out by the feed-out mechanism 230. When the portion of the bag b excluding the handle hole is arranged between the light-emitting unit and light-receiving unit of the origin detection sensor 155, the light-receiving unit blocks reception of the light emitted from the light-emitting unit, and the origin detection sensor 115 stops outputting a detection signal. On the other hand, when the handle hole of the bag b is arranged between the light-emitting unit and light-receiving unit of the origin detection sensor 155, the light-receiving unit receives the light emitted from the light-emitting unit, and the origin detection sensor 115 outputs a detection signal. As a result, the control board 300 can determine whether the handle hole of the bag b is positioned at a predetermined position (a predetermined position above the bag discharge outlet 111) based on the input status of the detection signal from the origin detection sensor 115. In particular, by controlling the drive of the motor 252a based on the detection signal input from the origin detection sensor 115, it is possible to supply (discharge) the bags b one by one from the bag discharge outlet 111. Hereinafter, the control of the supply of the bag body b by the bag body supplying device 1 will be described in detail.

[0025] In the bag body supplying device 1, the operator places the bag body roll 210 in the delivery mechanism 230 according to the above procedure, and then presses an initialization button (not shown), thereby executing an initialization operation. Then, when the initialization operation is completed and no detection signal is input from the bag body detection sensor 122 to the control board 300, a state in which the bag body b can be supplied (hereinafter referred to as a "supply-enabled state") is set. In the initialization operation, the bag supply operation is executed once. The bag supply operation is an operation of supplying (discharging) one bag b from the bag discharge port 111. Specifically, in the bag supply operation, the motor 252a is driven to rotate the drive roller 252 in the delivery direction (in this embodiment, clockwise when viewed from the left side, counterclockwise when viewed from the right side), and the control board 300 monitors the input of a detection signal from the origin detection sensor 115. Then, in response to the elapse of a predetermined time after the control board 300 determines that the detection signal has been input from the origin detection sensor 115, the drive of the motor 252a is stopped (the rotation of the drive roller 252 is stopped), and the bag supply operation is terminated. In this embodiment, when a detection signal is input from the bag detection sensor 122 to the control board 300, the supply prohibition state is set. Then, while the supply prohibition state is set, the supply of the bag b is prohibited. In other words, while the supply prohibition state is set, the supply start condition, which will be described later, is not established. In the initialization operation, one bag supply operation is performed, and one bag b is supplied (discharged) from the bag discharge port 111. As a result, when the initialization operation is completed, one bag b is hanging down below the bag discharge port 111, and a detection signal from the bag detection sensor 122 is input to the control board 300. Therefore, when the initialization operation is completed, a supply prohibited state is set. Therefore, after the initialization operation is completed, the operator must remove the supply bag by cutting the bag b (hereinafter referred to as the "supply bag") being supplied (discharged) from the bag discharge port 111 along the planned breaking line provided between the bag b continuous with the supply bag on the upstream side. As a result, the control board 300 is placed in a state where no detection signal is input from the bag detection sensor 122, and a supply enabled state is set. While the supply possible state is set, a bag supply operation is executed once each time the supply start condition is met. In this embodiment, the supply start condition is met when the control board 300 determines that a detection signal has been input from the coin insertion port 121 (when a coin is accepted for insertion into the coin insertion port 121). Here, as described above, in this embodiment, when the control board 300 receives a detection signal from the bag detection sensor 122, the supply prohibited state is set. Therefore, after each bag supply operation is completed, the next bag supply operation can be executed by removing the supplied bag.

[0026] (Action of bag body supply device 1) The bag body supplying device 1 includes a casing 100 having a bag body discharge outlet 111, a bag body roll 210 disposed inside the casing 100 and having a plurality of continuous bag bodies b wound thereon with a planned tear line interposed therebetween, and a delivery mechanism 230 capable of delivering the bag bodies b one by one from the bag body discharge outlet 111. That is, the bag body supplying device 1 includes the delivery mechanism 230 capable of delivering the bag bodies b one by one from the bag body discharge outlet 111. This makes it possible to automatically supply the bag bodies b one by one, thereby improving convenience. The bag body supplying device 1 also includes a pair of shaft members 220 that are detachable from the core of the bag body roll 210. The bag body roll 210 is rotatably disposed within the casing 100 via the pair of shaft members 220. That is, the bag body supplying device 1 includes a pair of shaft members 220 that are detachable from the core of the bag body roll 210. This makes it possible to arrange bag body rolls 210 made up of bag bodies b of various widths by preparing shaft members 220 according to the width of the bag bodies b. The bag body supplying device 1 also includes a support roller 254 that applies resistance to the rotation of the bag body roll 210 that accompanies the feeding of the bag body b by the feeding mechanism 230. This makes it possible for the bag body supplying device 1 to prevent problems caused by bending of the bag body b between the bag body roll 210 and the feeding mechanism 230. The bag supplying device 1 also includes a bag shortage detection sensor 244 that detects a decrease in the number of bags b wound around the bag roll 210. This makes it possible for the bag supplying device 1 to easily replenish the bags b.

[0027] (Variation) Although the embodiment of the present invention has been described above, various modifications can be made to the above embodiment. For example, in the above embodiment, a configuration may be adopted in which a supply button is provided instead of the coin insertion portion 121. Then, a configuration may be adopted in which the supply start condition is met when a press operation of the supply button is detected. In the above embodiment, a handle hole is provided in the bag body b, and the origin detection sensor 115 is configured to detect the handle hole of the bag body b. However, a handle hole may not be provided in the bag body b, and the origin detection sensor 115 may be configured to detect the planned tear line of the bag body b. Furthermore, among the configurations according to the above-described embodiment and the configurations according to the modified examples, a plurality of configurations may be combined as appropriate. [Explanation of symbols]

[0028] 1 Bag supply device 100 casing 111 Bag outlet 210 Bag roll 230 Delivery mechanism 244 Bag end detection sensor b Bag body

Claims

1. a casing having an outlet; a roll disposed within the casing and on which a plurality of continuous bags are wound with a break line therebetween; a delivery mechanism capable of delivering the bags one by one from the discharge opening.

2. a pair of shaft members detachable from the core of the roll; 2. The bag supplying device according to claim 1, wherein the roll is rotatably disposed within the casing via the pair of shaft members.

3. 3. The bag supplying device according to claim 1, further comprising a resistance force applying mechanism that applies resistance force to the rotation of the roll that accompanies the feeding of the bag by the feeding mechanism.

4. 3. The bag supplying device according to claim 1, further comprising a detection means for detecting a decrease in the number of bags wound on the roll.

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