Article supply device

Abstract

To provide an article supply device that allows film-like or tape-like articles to be easily set on the device and can improve productivity.SOLUTION: In a supply device (article supply device), a control device controls a dancer lever drive device (drive device) so that a swing position of a dancer lever 15 (support member) is positioned at a predetermined set position P1 during a setting operation in which a zipper tape T (article) is inserted into a delivery passage, and controls the dancer lever drive device so that the swing position of the dancer lever 15 is positioned at a predetermined use position P2 during supply (article supply) in which the zipper tape T is delivered along the delivery passage.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an article supplying device that supplies film-like or tape-like articles. [Background technology]

[0002] Conventionally, there is known technology relating to an article supplying device that supplies film-like or tape-like articles. For example, Patent Document 1 describes a device that supplies zipper tape for forming zipper pieces in a zipper application device that applies zipper pieces to packaging material on a packaging machine. In this device, a tension applying member (tension adjusting device) is provided on the zipper tape payout path. The tension applying member includes multiple fixed rollers arranged side by side in the horizontal direction, a tension lever (support member) that is rotatable up and down around its upstream end as a rotation center, and multiple oscillating rollers (movable rollers) supported by the tension lever. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-069624 Summary of the Invention [Problem to be solved by the invention]

[0004] In the device described in Patent Document 1, when an operator performs a setting operation to re-insert the zipper tape (item) into the feeding path, the operator must loop the zipper tape around each fixed roller and each movable roller one by one, which takes time. Therefore, if the operation of the packaging machine is stopped during this time, there is a problem of reduced productivity.

[0005] The present invention was made in consideration of such problems, and its purpose is to provide an article supply device that allows film-like or tape-like articles to be easily set into the device, thereby improving productivity. [Means for solving the problem]

[0006] In order to achieve the above object, the article supplying device of the present invention is an article supplying device including a tension adjusting device that adjusts the tension of an article in a feed path of a film-like or tape-like article, and a control device that controls the tension adjusting device, wherein the tension adjusting device includes a plurality of rotatable fixed rollers aligned along the feed path, a plurality of rotatable movable rollers arranged alternately with the plurality of fixed rollers, a support member that supports the plurality of movable rollers and swings relative to the plurality of fixed rollers, a drive device that swings the support member, and a detection device that detects the swing position of the support member and outputs the detected swing position to the control device, The support member is configured to be able to swing between a predetermined use position in which the item is hung around the multiple fixed rollers and the multiple movable rollers, and a predetermined set position in which a gap is created between the multiple movable rollers and the multiple fixed rollers through which the item can be inserted, and the control device controls the drive device so that the swing position of the support member is positioned at the predetermined set position during a set operation in which the item is inserted into the payout path, and controls the drive device so that the swing position of the support member is positioned at the predetermined use position during item supply in which the item is paid out along the payout path. [Effects of the Invention]

[0007] According to the article supplying device of the present invention, film-like or tape-like articles can be easily set in the device, thereby improving productivity. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic configuration diagram showing a bag making, filling and packaging machine equipped with a zipper application device to which an article supplying device according to an embodiment is applied. [Figure 2] FIG. 2 is an explanatory diagram schematically showing a zipper piece. [Figure 3] 1 is a perspective view showing an article supply device according to an embodiment. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is an explanatory diagram showing a dancer lever drive device included in the tension adjusting device. DETAILED DESCRIPTION OF THE INVENTION

[0009] (Bag making, filling and packaging machine) An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a schematic diagram showing a bag making, filling and packaging machine equipped with a zipper application device to which an article supplying device according to the embodiment is applied. A vertical bag making, filling and packaging machine 1 (hereinafter referred to as "packaging machine 1") includes a bag making tube 2, a packaging material feeder 3 (feeding device), a vertical sealing device 4, a horizontal sealing device 5, a control device 8, and a zipper application device 9. Each component of the packaging machine 1 is supported by a main body frame (not shown). In the following description, "frame members not shown" refers to frame members fixed to the main body frame.

[0010] Packaging machine 1 is supplied with a filling material such as a powder or solid material, such as food, to be filled into bags F. Bag-forming tube 2 extends vertically and receives the filling material through a hopper (not shown) connected to its upper end. Alternatively, a filling tube extending vertically inside the bag-forming tube and connected to a hopper may be disposed, and the filling material may be supplied into bag-forming tube 2 via the filling tube.

[0011] A former 6 is attached to the bag-making tube 2, and a payout path 7 extends from the former 6 to the packaging material roll WR. A packaging material tension adjustment unit 7a is located midway along the payout path 7, which uses multiple dancer rollers to adjust the tension of the packaging material W along the path. A zipper piece Z (see Figure 2) supplied from a zipper application device 9 is temporarily attached to the packaging material W by welding at a predetermined attachment position P midway along the payout path 7. Note that Figure 1 is a schematic diagram, and the reference numerals for the former 6 and bag-making tube 2 indicate the parts that are inside the packaging material W.

[0012] The packaging material feeders 3 are arranged below the formers 6, one on each side of the bag-formed tube 2. Each packaging material feeder 3 has an endless suction belt that adsorbs the packaging material W onto the suction belt, and as the suction belt moves, pays out the packaging material W downward along the outer periphery of the bag-formed tube 2. As a result, the packaging material W, such as a heat-sealable film, is paid out from the packaging material roll WR along the payout path 7 and is guided downward along the outer periphery of the bag-formed tube 2 while being formed into a cylindrical shape that surrounds the bag-formed tube 2 by the formers 6. At this time, a lap portion is formed in the packaging material W, with both side edges of the cylindrical packaging material W overlapping each other in a predetermined shape.

[0013] The vertical sealing device 4 is disposed adjacent to the packaging material W on the outer peripheral surface of the bag-forming tube 2, and opens and closes relative to the bag-forming tube 2, using a pair of heater blocks to heat-seal the lapped portion of the packaging material W. The horizontal sealing device 5 is provided below the bag-forming tube 2, and forms a horizontal seal in the packaging material W by sandwiching and heat-sealing the packaging material W between a pair of openable and closable heater blocks, and then cuts the packaging material W with a cutter.

[0014] Additionally, a pair of zipper heater blocks 5z that finally attach the zipper pieces Z to the packaging material are provided adjacent to the pair of heater blocks of the horizontal sealing device 5. The pair of zipper heater blocks 5z open and close independently of the pair of heater blocks of the horizontal sealing device 5. As a result, when a horizontal seal is formed in the packaging material W, the zipper pieces Z are finally attached by welding to the inner surface of the cylindrically formed packaging material W by the pair of zipper heater blocks 5z. With the above configuration, the top and bottom ends of the cut packaging material W are closed, and a zippered bag F filled with a content is formed. The zipper pieces Z are provided in a location that corresponds to the opening position of the bag F.

[0015] The control device 8 is configured to include input / output devices, memory devices (ROM, RAM, non-volatile RAM, etc.), a central processing unit (CPU), etc., and performs overall control of the packaging machine 1. Specifically, the control device 8 controls the various devices and equipment of the packaging machine 1, such as the packaging material feeder 3, the vertical sealing device 4, the horizontal sealing device 5, and the zipper application device 9, in accordance with various settings input via the input / output devices.

[0016] (Zipper piece) FIG. 2 is an explanatory diagram showing a schematic view of a zipper piece Z. FIG. 2(a) is a front view of the zipper piece Z, and FIG. 2(b) is a cross-sectional view taken along line AA in (a). The zipper piece Z has a male zipper piece ZA and a female zipper piece ZB. The male zipper piece ZA has a mating convex portion ZAt extending in the longitudinal direction and a male flange portion ZAf extending from the mating convex portion ZAt to one side in the lateral direction (width direction). The female zipper piece ZB has a mating recess ZBu extending in the longitudinal direction and female flange portions ZBf extending from the mating recess ZBu to both sides in the lateral direction (width direction). The male zipper piece ZA and the female zipper piece ZB form a mating portion Za by mating their mating convex portions ZAt and mating recesses ZBu with each other, thereby forming an integral zipper piece Z. The male flange portion ZAf and the female flange portion ZBf of the zipper piece Z are to be welded to the opposing inner surfaces of the bag F. At both longitudinal ends of the zipper piece Z, there are formed compressed portions Zb formed by compressing the mating portions Za, and crushed portions Zc formed by further crushing and welding the central portions of the compressed portions Zb. Such zipper pieces Z are formed by cutting the zipper tape T at the centers Zd of the crushed portions Zc.

[0017] (Zipper attaching device) 1, the zipper application device 9 includes a supply device 10 (article supply device) according to this embodiment, a direction changing section 20, an end welding device 30, a cutting device 40, and a payout / conveying device 50, and temporarily attaches a zipper piece Z to the packaging material W at a predetermined application position P on the packaging material W by thermocompression bonding using a welding device (not shown). The predetermined application position P is determined so that the center of the packaging material W in the width direction coincides with the center of the zipper piece Z in the longitudinal direction. As shown in FIG. 1, an edge sensor E is provided near the packaging material W to detect the meandering of the packaging material W at its end, and a control device 8 controls the payout / conveying device 50 (described later) based on the detection result of the edge sensor E.

[0018] The supply device 10 is driven to rotate by an electric motor (not shown) to feed out a zipper roll ZR around which a zipper tape T, which is a tape-like article according to the embodiment, is wound. The zipper tape T fed from the zipper roll ZR is also fed out by a feeding and conveying device 50 (described later). The tension of the zipper tape T in the feeding path is adjusted by a tension adjusting device 11 (FIG. 3) (described later). After passing through the tension adjusting device 11, the zipper tape T is twisted between a plurality of direction changing rollers 21 to 24 (FIG. 3) of a direction changing section 20, thereby changing its moving direction by 180 degrees.

[0019] The end welding device 30 is provided downstream of the direction change unit 20. The end welding device 30 is an ultrasonic device having an ultrasonic head 31 and an anvil (not shown) arranged opposite each other with the zipper tape T sandwiched therebetween. The end welding device 30 is driven and controlled by the control device 8, and generates ultrasonic waves from the ultrasonic head 31 while pressing and clamping the zipper tape T between the ultrasonic head 31 and the anvil, thereby forming the above-mentioned compressed portions Zb and crushed portions Zc in the zipper tape T. The compressed portions Zb and crushed portions Zc are formed at intervals corresponding to the length of the zipper piece Z by intermittently feeding out the zipper tape T.

[0020] The cutting device 40 is provided downstream of the end welding device 30. The cutting device 40 has a knife 44 that is movable vertically, a drive device (not shown) that moves the knife 44, and a clamping member (not shown) that clamps the zipper tape T when the zipper tape T is cut by the knife 44. The cutting device 40 is driven and controlled by the control device 8, and cuts the zipper tape T with the knife 44 at intervals corresponding to the length of the zipper pieces Z. In this embodiment, the end welding device 30 and the cutting device 40 are configured so that their relative positions in the direction X can be adjusted, allowing the length of the zipper pieces Z to be easily adjusted.

[0021] The unwinding and conveying device 50 has a unwinding member 51 and a conveying member 52. The unwinding member 51 is a mechanism for intermittently unwinding the zipper tape T at a length of the zipper piece Z according to the product specifications of the bag F. The unwinding member 51 includes gripping claws for gripping the tip of the zipper tape T and an air chuck for opening and closing the gripping claws, and is configured to be movable along the direction X by power from, for example, an electric motor. The conveying member 52 is a mechanism for conveying the zipper piece Z after cutting to the joining position P. The conveying member 52 includes gripping claws for gripping the zipper piece Z and an air chuck for opening and closing the gripping claws, and is configured to be movable along the direction X by power from, for example, an electric motor. The control device 8 controls the driving of the unwinding member 51 and the conveying member 52.

[0022] (Feeding device) Next, the configuration of the supply device 10 according to the embodiment will be described. In the following description, one of the horizontal directions in which the zipper tape T moves will be referred to as "direction X," and the other horizontal direction perpendicular to direction X will be referred to as "direction Y." The direction perpendicular to direction X and direction Y is the up-down direction. FIG. 3 is a perspective view showing the supply device 10. As shown in FIG. 3, the supply device 10 includes a zipper roll ZR around which the zipper tape T is wound, an electric motor M that drives and rotates the zipper roll ZR, and a tension adjustment device 11. The zipper roll ZR and electric motor M are rotatably attached to a first fixed plate 101. The electric motor M is driven and controlled by a control device 8.

[0023] The tension adjusting device 11 adjusts the tension of the zipper tape T unwound from the zipper roll ZR. Fig. 4 is a perspective view of the tension adjusting device 11, and Fig. 5 is a front view of the tension adjusting device 11. Fig. 6 is an explanatory diagram showing a dancer lever drive device 16 included in the tension adjusting device 11. Fig. 4(a) shows the tension adjusting device 11 as viewed from one side in direction Y, and Fig. 4(b) shows the tension adjusting device 11 as viewed from the other side in direction Y. Figs. 5(a) and 6(a) show the state during the setting operation of the zipper tape T, and Figs. 5(b) and 6(b) show the state during the supply of the zipper tape T (when supplying an item).

[0024] The tension adjusting device 11 is attached to a second fixed plate 102 provided above a first fixed plate 101. The first fixed plate 101 and the second fixed plate 102 are both attached to a frame member (not shown). The tension adjusting device 11 includes a plurality of fixed rollers 12, a plurality of movable rollers 13, a fixed roller support member 14, a dancer lever 15 (support member), a dancer lever drive device 16 (drive device), and a stroke position detection sensor 17 (detection device).

[0025] As shown in FIG. 5, the fixed rollers 12 are arranged in a line above the zipper roll ZR at intervals along the direction X. The movable rollers 13 are arranged above the zipper roll ZR alternately with the fixed rollers 12 (one roller is arranged between the fixed rollers 12). The movable rollers 13 are provided at different distances from a dancer lever shaft 151, which will be described later. The zipper tape T is wound around each fixed roller 12 and each movable roller 13 when the zipper tape T is supplied (see FIG. 5(b)). As a result, each fixed roller 12 and each movable roller 13 forms part of the payout path of the zipper tape T.

[0026] As shown in Fig. 4, the fixed roller support member 14 is a plate-like member extending along direction X. The fixed roller support member 14 is attached to a second fixed plate 102 provided above the first fixed plate 101 via multiple attachment shafts 141 extending in direction Y. The fixed roller support member 14 is formed with multiple roller support shafts 142 extending in direction Y, and the fixed rollers 12 are rotatably supported by these roller support shafts 142 and the attachment shafts 141.

[0027] The dancer lever 15 is a plate-like member extending along direction X. The dancer lever 15 is formed with a plurality of roller support shafts 154 extending in direction Y, and each movable roller 13 is rotatably attached to the roller support shafts 154. One end 15a of the dancer lever 15 is rotatably attached to the second fixed plate 102 via a dancer lever shaft 151 extending along direction Y. The dancer lever shaft 151 is configured to be rotatable forward and reverse within a predetermined angular range. The dancer lever 15 also has an operating shaft 152 attached to it adjacent to the dancer lever shaft 151 and extending along direction Y. A groove 102a extending in the swing direction of the dancer lever 15 is formed in the second fixed plate 102, and the operating shaft 152 is inserted into the groove 102a and extends to the side of the second fixed plate 102 opposite the dancer lever 15.

[0028] 4 to 6, the dancer lever drive device 16 has a swing lever 161, an air cylinder 162, and a solenoid valve 163. As shown in FIG. 4(b), the swing lever 161 is disposed on the opposite side of the second fixed plate 102 from the dancer lever 15, and is connected at one end to the dancer lever shaft 151 and at the other end to the operating shaft 152. The tip of the cylinder rod 162a of the air cylinder 162 is attached to the other end of the swing lever 161.

[0029] The air cylinder 162 extends and retracts a cylinder rod 162a using air pressure from the air supply source 18 (FIG. 6). When the cylinder rod 162a of the air cylinder 162 extends and retracts, the swing lever 161 swings (pivots) around the dancer lever shaft 151, and as the dancer lever shaft 151 rotates, the operating shaft 152 swings along the groove 102a. As a result, the dancer lever 15 swings around the dancer lever shaft 151 as the pivot. The air cylinder 162 is provided with a speed controller 164a at its rod-side intake and exhaust port and a speed controller 164b at its head-side intake and exhaust port (FIG. 6). The speed controllers 164a and 164b adjust the amount of air circulating to adjust the operating speed of the air cylinder 162.

[0030] As shown in FIG. 6, the solenoid valve 163 is a double solenoid valve, a so-called exhaust center type three-position valve. The solenoid valve 163 is connected to two intake and exhaust ports of the air cylinder 162 and is configured to adjust the air pressure supplied to the air cylinder 162. A regulator 165 serving as a pressure reducing valve is provided between the rod-side intake and exhaust port of the air cylinder 162 and the solenoid valve 163. When energized, the solenoid valve 163 establishes an air supply position that connects the air supply source 18 to either the rod-side intake and exhaust port or the head-side intake and exhaust port of the air cylinder 162 and connects the other of the rod-side intake and exhaust port or the head-side intake and exhaust port to an exhaust passage. For example, FIG. 6(a) shows a state in which the rod-side intake and exhaust port is connected to the air supply source 18 and the head-side intake and exhaust port is connected to an exhaust passage. In addition, the solenoid valve 163 forms an exhaust position where both the intake and exhaust ports of the air cylinder 162 communicate with the exhaust passage when it is not energized (FIG. 6(b)). The solenoid valve 163 is driven and controlled by the control device 8.

[0031] The stroke position detection sensor 17 is attached to the air cylinder 162 and is capable of linearly detecting the stroke position of the cylinder rod 162a and outputting the detection result as an analog signal. The stroke position detection sensor 17 outputs the detection result to the control device 8. The control device 8 recognizes the swing position of the dancer lever 15 based on the detection result input from the stroke position detection sensor 17.

[0032] (Operation of the supply device) Here, when replacing the zipper roll ZR, the zipper tape T is reinserted into the payout path. During this setting operation, the operation of the packaging machine 1 and the supply device 10 is stopped. Note that if a plurality of zipper rolls ZR and corresponding payout paths for the zipper tape T are provided, it is not necessary to stop the operation of all of the packaging machine 1 and the supply device 10, but payout of the zipper tape T is stopped at least in the payout path through which the zipper tape T is inserted. The start of the setting operation itself can be instructed by an operator via an operation panel (not shown) provided on the packaging machine 1 or the supply device 10.

[0033] In this setting operation, the operator manually passes the zipper tape T wound around the zipper roll ZR, starting from the leading end, through the payout path. First, starting from the state in which the zipper tape T is being supplied as shown in FIG. 5(b), the operator grasps the gripping portion 153 provided on the dancer lever 15 and moves the other end 15b of the dancer lever 15 upward. During the setting operation, the solenoid valve 163 is controlled to assume the exhaust position (see FIG. 6(b)), allowing the operator to easily swing the dancer lever 15 by manually extending the cylinder rod 162a of the air cylinder 162.

[0034] When the operator moves the dancer lever 15 in this manner, the control device 8 recognizes that the other end 15b of the dancer lever 15 has moved upward based on the detection result of the stroke position detection sensor 17. When the control device 8 recognizes the movement of the dancer lever 15, it controls the solenoid valve 163 to the air supply position ( FIG. 6( a) ) so that the swing position of the dancer lever 15 is maintained at a predetermined set position P1. The predetermined set position P1, as shown in FIG. 5( a) , is the position of the dancer lever 15 where, in the swing direction of the dancer lever 15, there are gaps between the fixed rollers 12 and the movable rollers 13 that allow at least the zipper tape T to be inserted therethrough. This ensures that even if the operator releases the dancer lever 15, the force of the air cylinder 162 will maintain the dancer lever 15 at the predetermined set position P1. Therefore, the operator can easily thread the zipper tape T between the fixed rollers 12 and the movable rollers 13.

[0035] After the operator has finished inserting the zipper tape T through the entire payout path, he or she manually moves the other end 15b of the dancer lever 15 downward against the force of the air cylinder 162 holding the dancer lever 15 at the predetermined set position P1. When the control device 8 recognizes this movement of the dancer lever 15 based on the detection result of the stroke position detection sensor 17, it sets the solenoid valve 163 to the exhaust position ( FIG. 6( b) ). As a result, the holding force is released, and the other end 15b of the dancer lever 15 moves downward due to its own weight, as shown in FIG. 5( b), and the swing position of the dancer lever 15 is positioned at the predetermined use position P2. The predetermined use position P2 is the position of the dancer lever 15 where the zipper tape T is wound around the multiple fixed rollers 12 and the multiple movable rollers 13 and tensioned. In this state, the control device 8 drives and controls the solenoid valve 163 to control the air pressure supplied to the air cylinder 162, and causes the zipper tape T to be unwound and fed along the unwinding path while appropriately adjusting the tension applied to the zipper tape T.

[0036] (Effects of the embodiment) As described above, in the supply device 10 (item supply device) of the embodiment, the control device 8 controls the dancer lever drive device 16 (drive device) so that the swing position of the dancer lever 15 (support member) is positioned at a predetermined set position P1 during the setting operation in which the zipper tape T (item) is inserted into the payout path, and controls the dancer lever drive device 16 so that the swing position of the dancer lever 15 is positioned at a predetermined use position P2 during the supply operation in which the zipper tape T is paid out along the payout path (item supply operation).

[0037] With this configuration, the operator does not need to wrap the zipper tape T around each roller one by one, and the setting of the zipper tape T can be completed in a short time. Therefore, according to the supplying device 10 of the embodiment, the zipper tape T, which is a tape-like article, can be easily set in the supplying device 10, and ultimately, the productivity of the packaging machine 1 to which the supplying device 10 is applied can be improved.

[0038] The dancer lever drive device 16 also includes an air cylinder 162 that swings the dancer lever 15 and an electromagnetic valve 163 that can adjust the air pressure supplied to the air cylinder 162. The stroke position detection sensor 17 (detection device) is a sensor that detects the stroke position of the air cylinder 162, and the control device 8 drives and controls the electromagnetic valve 163 based on the detection result of the stroke position detection sensor 17 during the setting work.

[0039] With this configuration, the swinging motion of the dancer lever 15 can be controlled based on the detection results of the stroke position of the air cylinder 162. In other words, there is no need to operate a switch or the like to instruct the swinging motion of the dancer lever 15. Therefore, there is no need for an operator to go to an operation panel located away from the dancer lever 15 to perform the operation, making the setup work easier and faster. Furthermore, since an interface such as an operation switch is not required, the device can be simplified. Furthermore, the dancer lever drive device 16 can be constructed using a relatively inexpensive air cylinder 162.

[0040] Furthermore, when the stroke position detection sensor 17 detects that the dancer lever 15 is moving from the predetermined use position P2 toward the predetermined set position P1 during the setting operation, the control device 8 controls the dancer lever drive device 16 so that the dancer lever 15 is held at the predetermined set position P1.

[0041] With this configuration, once the operator moves the dancer lever 15 toward the predetermined set position P1, the dancer lever 15 automatically moves toward the predetermined set position P1 and is held there, even if the operator then releases the dancer lever 15. This allows the operator to easily and quickly set the zipper tape T. Furthermore, as described above, there is no need to operate a switch to move and hold the dancer lever 15 at the predetermined set position P1, improving operability.

[0042] Furthermore, when the stroke position detection sensor 17 detects that the dancer lever 15 has moved from the predetermined set position P1 toward the predetermined use position P2 during the setting operation, the control device 8 controls the dancer lever drive device 16 so as to release the force holding the dancer lever 15 at the predetermined set position P1.

[0043] With this configuration, when the operator moves the dancer lever 15 from the predetermined set position P1, the holding force on the dancer lever 15 is quickly released, allowing the dancer lever 15 to be easily moved toward the predetermined use position P2. Also, there is no need to operate a switch to move the dancer lever 15 to the predetermined use position P2, improving operability.

[0044] The article is a zipper tape T that becomes a zipper piece Z to be attached to the packaging material W. With this configuration, as described above, the zipper tape T can be easily set in the supply device 10, and the productivity of the supply device 10, and therefore the productivity of the packaging machine 1, can be improved.

[0045] This concludes the description of the embodiment, but the aspects of the present invention are not limited to this embodiment. For example, in this embodiment, the article is a tape-like zipper tape T, but the present invention can be applied to any film-like or tape-like article. The article may be, for example, the packaging material W. In other words, the configuration of the tension adjusting device 11 and the control method by the control device 8 may be applied to the packaging material tension adjusting unit 7a provided on the feeding path 7 of the packaging material W.

[0046] In addition, in this embodiment, the payout path of the zipper tape T extends along direction X, which is one of the horizontal directions, and the dancer lever 15 swings up and down, but the extension direction of the payout path of the zipper tape T and the swing direction of the dancer lever 15 are not limited to these. Depending on the swing direction of the dancer lever 15, the dancer lever 15 may not move due to its own weight. In such a case, the dancer lever drive device 16 may be configured to operate the dancer lever 15.

[0047] Furthermore, the dancer lever drive device 16 and the detection device are not limited to those shown in the embodiment. The dancer lever drive device 16 may be a device that rotates the dancer lever shaft 151 using the power of an electric motor, for example, to swing the dancer lever 15, and the detection device may be a sensor that detects the rotation angle of the dancer lever shaft 151. Also, an interface such as a switch for operating the dancer lever drive device 16 may be provided, and the swing position of the dancer lever 15 may be controlled in accordance with operating instructions from an operator. [Explanation of symbols]

[0048] 1 Bag making, filling and packaging machine (packaging machine) 8 Control Device 9 Zipper attachment device 10 Feeding device (goods feeding device) 11 Tension adjustment device 12 Multiple fixed rollers 13 Multiple movable rollers 15 Dancer lever (support member) 16 Dancer lever drive device (drive device) 162 Air cylinder 163 Solenoid valve 17 Stroke position detection sensor (detection device) P1 Predetermined set position P2 Prescribed use position T zipper tape W packaging material Z zipper piece

Claims

1. An article supplying device including a tension adjusting device that adjusts the tension of a film-like or tape-like article within a feeding path of the article, and a control device that controls the tension adjusting device, The tension adjusting device is a plurality of rotatable fixed rollers arranged along the feeding path; a plurality of rotatable movable rollers arranged alternately with the plurality of fixed rollers; a support member that supports the plurality of movable rollers and swings relative to the plurality of fixed rollers; a drive device that causes the support member to swing; a detection device that detects the swing position of the support member and outputs the detected swing position to the control device, the support member is configured to be swingable between a predetermined use position in which the article is wound around the plurality of fixed rollers and the plurality of movable rollers, and a predetermined set position in which a gap is formed between the plurality of movable rollers and the plurality of fixed rollers so that the article can be inserted therethrough; The control device controls the drive device so that the swing position of the support member is positioned at the predetermined set position during a setting operation in which the article is inserted into the feeding path, and controls the drive device so that the swing position of the support member is positioned at the predetermined use position during article supply in which the article is fed along the feeding path. Goods supply device.

2. the drive device includes an air cylinder that swings the support member, and an electromagnetic valve that can adjust the air pressure supplied to the air cylinder, the detection device is a sensor that detects a stroke position of the air cylinder, The article supply device according to claim 1 , wherein the control device controls the actuation of the solenoid valve based on the detection result of the sensor during the setting operation.

3. The item supply device described in claim 2, wherein when the detection device detects that the support member is moving from the predetermined use position toward the predetermined set position during the setting operation, the control device controls the drive device so that the support member is maintained at the predetermined set position.

4. The item supply device described in claim 2 or claim 3, wherein the control device controls the drive device so that the force holding the support member at the predetermined set position is released when the detection device detects that the support member has moved from the predetermined set position toward the predetermined use position during the setting operation.

5. 2. The article supplying device according to claim 1, wherein the article is a packaging material or a zipper tape.

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