Packaging material feeding device

Abstract

To provide a packaging material supply device capable of imparting a rotational driving force to a plurality of delivery rollers turning with a plurality of reel shafts, with a simple structure.SOLUTION: A packaging material supply device includes: a turning arm for turning a plurality of reel shafts loaded with a packaging material; a plurality of delivery rollers 80 provided at the turning arm corresponding to each of the plurality of reel shafts, and for delivering the packaging material from the reel shaft; and a delivery roller drive device 100 for rotationally driving the plurality of delivery rollers 80. The delivery roller drive device 100 includes: a servo motor 110 provided at a body frame; a driving force output member 120 rotatable by a rotational driving force from the servo motor 110; and an engagement member 150 provide corresponding to each of the plurality of delivery rollers 80, and for transmitting the rotational driving force from the driving force output member 120 to the delivery roller 80 by being engaged with the driving force output member 120 when the reel shaft L moves to a delivery position.SELECTED DRAWING: Figure 10

Description

[Technical Field]

[0001] The present invention relates to a packaging material supplying device. [Background technology]

[0002] Conventionally, there is known technology relating to a packaging machine equipped with a packaging material supply device that loads packaging material onto multiple reel shafts and switches between the packaging materials to be used. For example, Patent Document 1 discloses a form-fill-seal packaging machine in which an upper winding roll and a lower winding roll are loaded onto an upper winding shaft and a lower winding shaft, respectively, which serve as reel shafts fixedly arranged above and below each other. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6125204 Summary of the Invention [Problem to be solved by the invention]

[0004] In the form-fill-seal machine described in Patent Document 1, the positions of the multiple reel shafts are fixed, which can make loading new packaging material more time-consuming depending on the height of the reel shafts. Therefore, the multiple reel shafts may be rotated to set the desired feeding position for feeding the packaging material and the desired standby position. In this case, a possible solution is to use a structure in which a payout roller for paying out packaging material from the reel shaft at the feeding position corresponds to each reel shaft and rotates together with the reel shaft. However, providing multiple payout rollers requires multiple rotational drive sources and mechanisms for transmitting rotational drive force to the payout rollers. Furthermore, a configuration in which the rotational drive sources and mechanisms for transmitting drive force rotate together with the payout rollers results in complex device structure and electrical wiring.

[0005] The present invention has been made in consideration of these problems, and its purpose is to provide a packaging material supply device that is capable of applying a rotational driving force to multiple payout rollers that rotate together with multiple reel shafts using a simple structure. [Means for solving the problem]

[0006] In order to achieve the above object, the packaging material supply device of the present invention comprises a plurality of reel shafts on which packaging material is loaded, a pivot arm rotatably attached to a main frame and which rotates the plurality of reel shafts between a feed position where the packaging material is fed and used and a standby position before the packaging material is fed and used, a plurality of payout rollers provided on the pivot arm corresponding to each of the plurality of reel shafts and which pay out the packaging material from the reel shafts, and a payout roller drive device which rotationally drives the plurality of payout rollers, the payout roller drive device having a rotational drive source provided on the main frame, a drive force output member which can be rotated by the rotational drive force from the rotational drive source, and an engagement member provided corresponding to each of the plurality of payout rollers which engages with the drive force output member to transmit the rotational drive force of the drive force output member to the payout roller when the reel shaft moves to the feed position as the pivot arm pivots. [Effects of the Invention]

[0007] According to the packaging material supply device of the present invention, it is possible to apply a rotational driving force to a plurality of feed rollers that rotate together with a plurality of reel shafts with a simple structure. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view showing an outline of a bag making, filling and packaging machine equipped with a packaging material supplying device according to an embodiment. [Figure 2] 1 is a diagram showing an outline of the system configuration of a bag making, filling and packaging machine. [Figure 3] FIG. 2 is a side view showing an outline of the packaging material supply device. [Figure 4] FIG. 2 is a perspective view showing an outline of the packaging material supply device. [Figure 5] 4 is an enlarged side view showing the packaging material supply device in the vicinity of the holding member. FIG. [Figure 6] 10 is an explanatory diagram showing how the end of a preceding packaging material and the front end of a following packaging material are connected by a connector. FIG. [Figure 7] 10 is an explanatory diagram showing the state of the packaging material supply device in steps S1 and S2 during execution of packaging material supply control. FIG. [Figure 8] 10 is an explanatory diagram showing the state of the packaging material supply device in steps S3 and S4 during the execution of packaging material supply control. FIG. [Figure 9] 10 is an explanatory diagram showing the state of the packaging material supply device in steps S5 and S6 during execution of packaging material supply control. FIG. [Figure 10] FIG. 2 is a perspective view showing an outline of a delivery roller driving device. [Figure 11] FIG. 2 is a perspective view showing a driving force output member. [Figure 12] FIG. 2 is a front view showing a driving force output member. [Figure 13] FIG. [Figure 14] 10A and 10B are explanatory views showing a state in which an engaging member is inserted into a driving force output member. [Figure 15] 10 is an explanatory diagram showing a state in which an engagement member is engaged with a driving force output member; FIG. [Figure 16] 10 is an explanatory diagram showing a state in which an engaged driving force output member and an engaging member rotate. FIG. [Figure 17] 10 is an explanatory view showing a state in which the engaging member is in a position where it is extracted from the drive force output member. FIG. [Figure 18] 10 is an explanatory diagram showing a state in which the engaging member is pulled out from the driving force output member. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0010] (Bag making, filling and packaging machine) Fig. 1 is a perspective view showing an outline of a form, fill, and seal machine equipped with a packaging material supply device according to an embodiment, and Fig. 2 is a configuration diagram showing an outline of the system configuration of the form, fill, and seal machine. The form, fill, and seal machine 1 includes a packaging material supply device 10 according to an embodiment, a bag manufacturing and packaging device 20, and a control device 30 (see Fig. 2).

[0011] (Packaging material supply device) The packaging material supply device 10 is a device that supplies packaging material W to the bag-making and packaging device 20. The packaging material W is made of a heat-sealable film or the like. The packaging material supply device 10 has multiple (two in this embodiment) reel shafts L (see FIG. 3 ), and supplies packaging material W from a packaging material roll WR loaded on each reel shaft L via multiple path rollers R1 to the bag-making and packaging device 20. The multiple path rollers R1 include tension adjustment mechanisms 14, also known as dancer rollers, that can adjust the tension of the packaging material W between the packaging material supply device 10 and the bag-making and packaging device 20 by adjusting the position of a movable roller. The detailed configuration of the packaging material supply device 10 will be described later.

[0012] (Bag making and packaging equipment) The bag-making and packaging apparatus 20 is an apparatus that forms the packaging material W supplied from the packaging material supply apparatus 10 into a bag shape and fills the formed bags with a filling material such as powder or granular material or snack foods. Note that FIG. 1 does not partially illustrate the packaging material W passing through the bag-making and packaging apparatus 20. The bag-making and packaging apparatus 20 is provided with a bag-making tube 22 extending in the vertical direction below a hopper 21 that supplies the contents. A filling tube 26 is disposed within the bag-making tube 22, and the filling tube 26 protrudes upward from the bag-making tube 22 and connects to the hopper 21. A former 27 is provided above the bag-making tube 22 to form and guide the packaging material W supplied from the packaging material supply apparatus 10 into a generally cylindrical shape. As the packaging material W passes through the former 27, a wrap portion is formed in which both side edges are overlapped with each other in a predetermined shape. A pair of feeding belts 23 (packaging material feeders) is provided on both sides of the bag-making tube 22, and the packaging material W extending along the periphery of the bag-making tube 22 is fed downward by the pair of feeding belts 23. Note that below the bag-making tube 22, a forming guide (not shown) is provided to form the packaging material W into a predetermined shape.

[0013] An openable vertical sealer 24 is provided near the bag-forming tube 22. The vertical sealer 24 heat-seals the lap portion of the packaging material W, forming vertical seal flaps by bonding both side edges together. An openable horizontal sealer 25 is provided below the bag-forming tube 22. The horizontal sealer 25 has a pair of heater blocks 25a, 25b and a cutter (not shown). When the horizontal sealer 25 closes, the pair of heater blocks 25a, 25b sandwich the packaging material W from the front and back, forming horizontal seals in the packaging material W, and the packaging material W is cut by the cutter (not shown). This closes the top and bottom ends of the packaging material W with horizontal seals, forming a bag F filled with contents supplied from the hopper 21 via the filling tube 26, as shown in FIG. 1.

[0014] (Control device) The control device 30 is a controller that performs overall control of the form-fill-seal packaging machine 1. As shown in Fig. 2, the input side of the control device 30 is electrically connected to the setting input device 2, an optical sensor 90 (described later), and the like. The output side of the control device 30 is also electrically connected to the tension adjustment mechanism 14, a feed-out roller drive device 100, a swivel arm drive device 200, a connector 70 (described later), a feed-out belt 23, a vertical sealer 24, a horizontal sealer 25, and the like.

[0015] The setting input device 2 is an interface through which an operator inputs various setting values ​​for operating the form-fill-seal machine 1. The optical sensor 90 is a sensor for detecting the trailing end E of the packaging material W (see FIGS. 6 and 8). Note that an ultrasonic sensor or the like may be used instead of the optical sensor 90. In that case, the reflector 91, which will be described later, may be omitted. The feed roller drive device 100 is a device that rotates and drives a plurality of feed rollers 80, which will be described later, and includes at least a servo motor 110 (see FIG. 10). The swivel arm drive device 200 is a device that rotates and drives a swivel arm 40, which will be described later, and includes at least a servo motor (not shown). The control device 30 controls the various devices connected to the output side according to various settings input by the operator via the setting input device 2. In this embodiment, the control device 30 executes packaging material supply control, which selectively switches between packaging material rolls WR loaded on the plurality of reel shafts L of the packaging material supply device 10 to supply packaging material W to the bag-making and packaging device 20. Details of the packaging material supply control will be described later.

[0016] (Detailed configuration of packaging material supply device) Next, a detailed configuration of the packaging material supplying device 10 according to the embodiment will be described. Fig. 3 is a side view showing an outline of the packaging material supplying device 10, and Fig. 4 is a perspective view showing an outline of the packaging material supplying device 10. Note that Fig. 4 omits the illustration of some of the components of the packaging material supplying device 10. The packaging material supplying device 10 includes the plurality of reel shafts L, a swivel arm 40 centered on a central axis 40a, a plurality of holding members 50, a plurality of connection bases 60, a connector 70, a plurality of pay-out rollers 80, a receiving roller 85, an optical sensor 90, the pay-out roller driving device 100, and the swivel arm driving device 200.

[0017] (Multiple reel axes) The multiple reel shafts L are arranged at positions rotated a predetermined angle relative to each other with respect to the central axis 40a of the pivot arm 40. The same applies to the members provided corresponding to the reel shafts L below. In this embodiment, the multiple reel shafts L have a first reel shaft LA and a second reel shaft LB that are parallel to each other. As shown in FIG. 3, the first reel shaft LA and the second reel shaft LB are arranged at positions rotated 180 degrees relative to each other with respect to the central axis 40a of the pivot arm 40. Each reel shaft L is fitted with a disc (not shown) that applies a braking force to the rotation of the reel shaft L by pressing or clamping it with an air-driven brake device (not shown).

[0018] As shown in FIG. 3 , the first reel shaft LA and the second reel shaft LB are configured to be able to rotate by a pivot arm 40 between a payout position P1, where the packaging material W is paid out and used, and a standby position P2, where the packaging material W is paid out and used. In the following description, the packaging material W that is used first from the packaging roll WR loaded on the reel shaft L at the payout position P1 will be referred to as the "previous packaging material W1," and the packaging material W that is used next after the previous packaging material W1, i.e., the packaging material W of the packaging roll WR loaded on the reel shaft L at the standby position P2, will be referred to as the "following packaging material W2." In the following description, the orientations of the components of the packaging material supply device 10 will be defined based on the states in which the reel shafts L are at the payout position P1 and the standby position P2. In the following description, the axial direction of the pivot arm 40 will be simply referred to as the "axial direction," and the orientations of the components of the packaging material supply device 10 will be defined. In addition, the up-down direction in FIG. 3 is the vertical up-down direction, the left-right direction is the horizontal direction, and the direction of the paper surface is the axial direction.

[0019] (swivel arm) As described above, the swivel arm 40 is a member that rotates the first reel shaft LA and the second reel shaft LB between the unwinding position P1 and the standby position P2. The swivel arm 40 is attached to a main body frame (not shown) of the packaging material supply device 10 so as to be rotatable about a central shaft 40a. A servo motor (not shown) of the swivel arm drive device 200 is connected to the central shaft 40a. The swivel arm 40 can be rotated about the central shaft 40a by being driven by the servo motor, and its position can be fixed at any angle.

[0020] A plurality of (two in this embodiment) reel shaft support members 41 that support the reel shafts L are attached to the pivot arm 40. The reel shaft support members 41 include a first reel shaft support member 41A that extends toward the first reel shaft LA and rotatably supports the first reel shaft LA, and a second reel shaft support member 41B that extends toward the second reel shaft LB and rotatably supports the second reel shaft LB. The first reel shaft support member 41A and the second reel shaft support member 41B have the same configuration, except that they are located at positions rotated 180 degrees from each other around the center shaft 40a.

[0021] Additionally, a plurality of (two in this embodiment) frame members 42 are attached to the pivot arm 40 via the respective reel shaft support members 41. The frame members 42 include a first frame member 42A extending above the packaging material roll WR loaded on the first reel shaft LA and a second frame member 42B extending below the packaging material roll WR loaded on the second reel shaft LB. The first frame member 42A and the second frame member 42B have the same configuration except that they are positioned at positions rotated 180 degrees from each other around the central axis 40a. A plurality of (two in this embodiment) path rollers R2 for guiding the packaging material W are provided at the tip of the first frame member 42A. Similarly, a plurality of (two in this embodiment) path rollers R2 for guiding the packaging material W are provided at the tip of the second frame member 42B.

[0022] Furthermore, a reflector 91 of an optical sensor 90 is attached to each path roller R2 of the frame member 42. As shown in FIG. 3, the optical sensor 90 is disposed near the reel shaft L at the payout position P1, and is a sensor that emits light toward the reflector 91 and receives the light reflected from the reflector 91. The optical sensor 90 detects whether or not a packaging material W (i.e., a preceding packaging material W1) is present between it and the reflector 91, depending on the intensity of the reflected light it receives, and outputs the detection result to the control device 30.

[0023] (holding member) The holding members 50 are members for holding the connection base 60 and the payout roller 80, which will be described later. As shown in FIG. 4, a pair of holding members 50 are provided at both axial ends of a plate-like member 44 provided at the vertical end of the swivel arm 40. The holding members 50 include a first holding member 50A provided corresponding to the first reel shaft LA and a second holding member 50B provided corresponding to the second reel shaft LB. As shown in FIG. 3, the first holding member 50A and the second holding member 50B have the same configuration except that they are positioned at positions rotated 180 degrees from each other with respect to the central shaft 40a.

[0024] FIG. 5 is an enlarged side view showing the packaging material supply device 10 in the vicinity of the holding member 50. The holding member 50 is a flat plate-shaped member and has legs 51, a connection table holding portion 52, and a roller holding portion 53. The legs 51 extend vertically from the plate-shaped member 44. The connection table holding portions 52 extend horizontally on both sides from the legs 51. A path roller R3 for guiding the packaging material W is provided at the end of the connection table holding portion 52 on the corresponding reel shaft L side in the horizontal direction (the left side in FIG. 4). The roller holding portion 53 is a portion that juts out in a substantially triangular shape at the horizontal center of the connection table holding portion 52 toward the opposite side from the legs 51. The roller holding portion 53 rotatably supports the shaft end of the feed roller 80.

[0025] (Connection stand) 3 to 5, the multiple connection bases 60 will be described. The connection base 60 is a member that serves as a base when connecting the leading end S of the leading packaging material W1 and the trailing packaging material W2 with the connector 70. In other words, the connection base 60 is a member that sandwiches the leading packaging material W1 and the trailing packaging material W2 between itself and a pair of heater blocks 71 of the connector 70, which will be described later.

[0026] The connecting stand 60 is provided corresponding to the reel shaft L on which the packaging roll WR of the leading packaging material W1 is loaded in order to connect the following packaging material W2 to the leading packaging material W1. Specifically, the connecting stand 60 includes a first connecting stand 60A provided corresponding to the first reel shaft LA and a second connecting stand 60B provided corresponding to the second reel shaft LB. As shown in FIG. 3, the first connecting stand 60A is attached to the first holding member 50A, and the second connecting stand 60B is attached to the second holding member 50B. The first connecting stand 60A and the second connecting stand 60B have the same configuration except that they are positioned at positions rotated 180 degrees from each other with respect to the central axis 40a, as shown in FIG.

[0027] As shown in FIG. 4, each connecting base 60 extends axially between a pair of holding members 50 so as to be wider than the width of the packaging material W, and is held by the connecting base holding portion 52 of each holding member 50. The connecting base 60 is disposed horizontally opposite (to the right in FIG. 4) the corresponding reel axis L of the payout roller 80 held by the holding member 50. The connecting base 60 has a clamping mechanism 61 and two base portions 62. The clamping mechanism 61 is configured so that an operator can manually open and close it vertically to clamp the leading end of the trailing packaging material W2. The two base portions 62 are spaced apart at a distance corresponding to a pair of heater blocks 71 of the connecting device 70 (described later), and are portions that sandwich the leading end S of the leading packaging material W1 and the trailing packaging material W2 between the pair of heater blocks 71. A path roller R4 for guiding the trailing packaging material W2 is provided near the base portion 62 of the connecting base 60.

[0028] (connector) As shown in FIG. 3, the splicer 70 is disposed above a connection table 60 (first connection table 60A in FIG. 3) provided on a holding member 50 that holds a feed roller 80 that is feeding out the preceding packaging material W1. The splicer 70 is disposed downstream of the feed roller 80, which will be described later, in the feeding direction of the preceding packaging material W1. The splicer 70 has a pair of heater blocks 71 and a cutter 72 disposed between the pair of heater blocks 71. The pair of heater blocks 71 and the cutter 72 of the splicer 70 are movable in the vertical direction and are driven and controlled by the control device 30. Note that, although the splicer 70 has a pair of heater blocks 71 in this embodiment, the splicer 70 may also have another sealer, such as an ultrasonic sealer, that can splice together packaging materials W. In this case, the splicer 70 may have an ultrasonic vibration horn of the ultrasonic sealer, and the splicer table 60 may have an anvil as a fixing jig that clamps the packaging material W between the ultrasonic vibration horn and the connection table 60.

[0029] FIG. 6 is an explanatory diagram showing how the leading end S of the leading packaging material W1 and the trailing packaging material W2 are connected by a connector 70. As shown in the figure, the connector 70 connects the leading end S of the leading packaging material W1 and the trailing packaging material W2, which are stacked one above the other, by heat welding while pressing them against the base 62 of the connection stand 60 using a pair of heater blocks 71. The leading end S of the bonded leading packaging material W1 and the trailing packaging material W2 is then cut by a cutter 72. As a result, the portions of the bonded leading packaging material W1 and the trailing packaging material W2 that are downstream of the cutter 72 in the feeding direction become a single continuous piece of packaging material W. Meanwhile, the portions of the bonded leading packaging material W1 and the trailing packaging material W2 that are upstream of the cutter 72 in the feeding direction become a single piece of scrap. In this way, by locating the cutter 72 between the pair of heater blocks 71, it is possible to leave a single scrap of scrap that is bonded together, making it easier to dispose of the scrap. The cut pieces naturally fall into the packaging material supply device 10. The connection process between the leading end S of the preceding packaging material W1 and the following packaging material W2 by the pair of heater blocks 71 and the cutting process by the cutter 72 are performed before the trailing end E of the preceding packaging material W1 passes the payout roller 80.

[0030] (feed roller) The plurality of pay-out rollers 80 are provided corresponding to the reel shaft L on which the packaging roll WR of the preceding packaging material W1 is loaded in order to pay-out the preceding packaging material W1. Specifically, the plurality of pay-out rollers 80 include a first pay-out roller 80A provided corresponding to the first reel shaft LA and a second pay-out roller 80B provided corresponding to the second reel shaft LB. As shown in FIG. 3, the first pay-out roller 80A is attached to the first holding member 50A, and the second pay-out roller 80B is attached to the second holding member 50B.

[0031] As shown in FIGS. 4 and 5, each of the payout rollers 80 has its shaft end rotatably supported by roller holding portions 53 of a pair of holding members 50 arranged in the axial direction of the payout roller 80. Each payout roller 80 is rotationally driven by a servo motor 110 of a payout roller drive device 100. Also, as shown in FIGS. 3 and 4, a rotatable receiving roller 85 is disposed above the payout roller 80 (first payout roller 80A in FIGS. 3 and 4) corresponding to the reel shaft L on which the packaging roll WR of the preceding packaging material W1 is loaded. The receiving roller 85 is configured to be movable substantially in the vertical direction and can sandwich the preceding packaging material W1 between itself and the payout roller 80. As a result, when the payout roller 80 is rotationally driven by the servo motor 110, the preceding packaging material W1 sandwiched between the payout roller 80 and the receiving roller 85 is paid out from the packaging roll WR by the rotation of the payout roller 80.

[0032] 3, the first payout roller 80A and the receiving roller 85 are provided closer to the first reel shaft LA than the connector 70. In other words, the payout roller 80 and the receiving roller 85 are provided closer to the reel shaft L on which the preceding packaging material W1 is loaded than the connection position CP (see FIG. 6) where the preceding packaging material W1 and the following packaging material W2 are connected by the connector 70 in the payout direction of the preceding packaging material W1. The side of the reel shaft L on which the preceding packaging material W1 is loaded means the upstream side in the payout direction of the preceding packaging material W1.

[0033] (Operation of the form-fill-seal machine) The operation of the form fill and pack packaging machine 1 configured as described above will be described with reference to Figures 7 to 9. Figures 7 to 9 show the state of packaging material supply device 10 in steps S1 to S6 while packaging material supply control is being executed by control device 30. Figure 7 is an explanatory diagram showing the state of packaging material supply device 10 in steps S1 and S2 while packaging material supply control is being executed. Figure 8 is an explanatory diagram showing the state of packaging material supply device 10 in steps S3 and S4 while packaging material supply control is being executed. Figure 9 is an explanatory diagram showing the state of packaging material supply device 10 in steps S5 and S6 while packaging material supply control is being executed.

[0034] First, as shown in step S1 of FIG. 7, assume that the first reel shaft LA is positioned at the payout position P1 and the second reel shaft LB is positioned at the standby position P2. At this time, the preceding packaging material W1 from the packaging roll WR loaded on the first reel shaft LA is sandwiched between the first payout roller 80A attached to the first holding member 50A and the receiving roller 85. In the state shown in step S1, the control device 30 controls the drive of the payout roller drive device 100 and the payout belt 23, causing the first payout roller 80A and the payout belt 23 to pay out the preceding packaging material W1 from the first reel shaft LA and supply it to the bag-making and packaging apparatus 20. As described above, by providing the path roller R2 on the first frame member 42A and the path roller R3 on the first holding member 50A, the preceding packaging material W1 can be guided in a stable position to the first payout roller 80A.

[0035] As the leading packaging material W1 is unwound from the first reel shaft LA, the diameter of the packaging roll WR loaded on the first reel shaft LA decreases, as shown in step S2. During this time, the operator, at any or designated time, sets a new packaging roll WR on the second reel shaft LB in standby position P2 and sets the leading end S of the loaded packaging roll WR of the trailing packaging material W2 in the clamp mechanism 61 of the connection stand 60. Setting the trailing packaging material W2 on the connection stand 60 can be performed without stopping the unwinding of the leading packaging material W1, for example, by making the connection stand 60 movable toward the reel shaft L side (here, the second reel shaft LB side) on which the packaging roll WR of the trailing packaging material W2 is loaded. However, loading the new packaging roll WR onto the reel shaft L and setting the trailing packaging material W2 on the connection stand 60 may be performed after the rotation of the pivot arm 40 is temporarily stopped in the state of step S5 shown in FIG. 9 .

[0036] If the state shown in FIG. 7 continues, the leading packaging material W1 is used up and separated from the first reel axis LA, as shown in step S3 of FIG. 8. As a result, the intensity of the reflected light from the reflector 91 received by the optical sensor 90 changes from the state in which the leading packaging material W1 was between the optical sensor 90 and the reflector 91. This causes the optical sensor 90 to detect that the leading packaging material W1 on the first reel axis LA has been used up, i.e., that the trailing end E of the leading packaging material W1 has passed between the optical sensor 90 and the reflector 91, and the detection result is output to the control device 30. When this detection result is input, the control device 30 temporarily stops the feeding of the leading packaging material W1 by the first feed roller 80A and the feed belt 23. Then, the control device 30 connects the leading packaging material W1 and the leading end S of the following packaging material W2 using the connector 70 (see FIG. 6). As described above, the optical sensor 90 may be replaced with another sensor, such as an ultrasonic sensor.

[0037] As described above, the payout roller 80 that pays out the leading packaging material W1 is located closer to the reel axis L (here, the first reel axis LA) of the leading packaging material W1 than the connection position CP between the leading packaging material W1 and the trailing packaging material W2. Therefore, even after the leading packaging material W1 separates from the reel axis L, the tension on the leading packaging material W1 is maintained between the payout roller 80 and the connection position CP. This prevents the leading packaging material W1 from becoming unstable due to the loss of tension in the leading packaging material W1, which prevents the leading packaging material W1 and the trailing packaging material W2 from being unable to be connected at the desired position.

[0038] Next, as shown in step S4, the control device 30 drives and controls the swivel arm drive device 200 to rotate the swivel arm 40 about the central axis 40a, as indicated by the solid arrow. As a result, the first reel shaft LA moves from the unwinding position P1 toward the standby position P2, and the second reel shaft LB moves from the standby position P2 toward the unwinding position P1. At this time, the entire swivel arm 40 rotates, causing the first holding member 50A and the second holding member 50B to rotate in the same direction. As the swivel arm 40 continues to rotate, the path roller R3 of the second frame member 42B and the path roller R3 of the second holding member 50B come into contact with the trailing packaging material W2, as shown in step S5 of FIG. 9. This allows the posture of the trailing packaging material W2 to be stably maintained even while the swivel arm 40 is rotating.

[0039] Then, as shown in step S6, the second reel shaft LB is positioned at the unwinding position P1, and the first reel shaft LA is positioned at the standby position P2. At this point, the control device 30 stops the rotation of the swivel arm 40 using the servo motor of the swivel arm drive device 200 and fixes the swivel arm 40 in the posture of step S6. As a result, the following packaging material W2 is sandwiched between the second unwinding roller 80B and the receiving roller 85 attached to the second holding member 50B, and is ready to be unwound by the second unwinding roller 80B. In other words, the packaging material W of the packaging material roll WR loaded on the second reel shaft LB becomes the preceding packaging material W1. The control device 30 again drives and controls the unwinding roller drive device 100 and the unwinding belt 23, causing the second unwinding roller 80B and the unwinding belt 23 to unwind the preceding packaging material W1 from the second reel shaft LB and supply it to the bag-making and packaging device 20. By repeatedly executing the processes from step S1 to step S6 described above, the packaging material W from the packaging material rolls WR loaded on the first reel shaft LA and the second reel shaft LB can be sequentially supplied to the bag-making and packaging apparatus 20.

[0040] (Feed-out roller drive device) Next, a structure for rotationally driving the feed roller 80 will be described as a main part of the packaging material supply device 10 according to this embodiment. The packaging material supply device 10 is equipped with the feed roller drive device 100 for rotationally driving the feed roller 80. FIG. 10 is a perspective view showing an outline of the feed roller drive device 100. The feed roller drive device 100 is equipped with a servo motor 110 (rotational drive source), a first pulley 112, a second pulley 114, a belt 116, a drive force output member 120, a pair of position detection sensors 140, and a plurality of engagement members 150.

[0041] (Servomotor and mechanism that transmits driving force from the servomotor) The servo motor 110 is a rotational drive source that is driven and controlled by the control device 30 and outputs a rotational drive force. The servo motor 110 is disposed near the unwinding roller 80 that corresponds to the reel shaft L positioned at the unwinding position P1 and is fixed to a main body frame (not shown). The first pulley 112 is attached to the output shaft of the servo motor 110 and rotates together with the servo motor 110. The second pulley 114 is rotatably fixed to the main body frame (not shown) via a fixing member 115 and is also fixed to a drive force output member 120. The belt 116 is wound around the first pulley 112 and the second pulley 114. As a result, the rotational drive force of the servo motor 110 is transmitted to the drive force output member 120 via the first pulley 112, the second pulley 114, and the belt 116.

[0042] (driving force output member) The driving force output member 120 is a member for outputting the rotational driving force of the servo motor 110 to the payout roller 80, and is fixed to a main body frame (not shown) via a second pulley 114. Fig. 11 is a perspective view showing the driving force output member 120, and Fig. 12 is a front view showing the driving force output member 120. The driving force output member 120 has a base member 122 and a pair of groove forming members 124.

[0043] The base member 122 is a disk-shaped member, and is fixed to the second pulley 114 so that the rotation axis 120a of the driving force output member 120 and the central axis of the second pulley 114 coincide with each other. In other words, the driving force output member 120 rotates coaxially with the second pulley 114. The rotation axis 120a of the driving force output member 120 is disposed on the rotation path (see the solid arrows in FIGS. 14 and 18) of the feed roller 80, which rotates together with the rotating arm 40. The pair of groove forming members 124 are provided on a surface of the base member 122 opposite to the second pulley 114. The pair of groove forming members 124 are disposed facing each other with a gap between them, sandwiching the rotation axis 120a therebetween.

[0044] Between the pair of groove forming members 124, an engagement groove 130 is formed in a range that includes the rotation axis 120a, extending in a direction perpendicular to the rotation axis 120a. In this embodiment, the engagement groove 130 has openings 130a formed at both ends. Here, the opening at one end is referred to as the "first opening 131a," and the opening at the other end is referred to as the "second opening 132a." Note that the edges of the pair of groove forming members 124 that form the first opening 131a and the second opening 132a are rounded.

[0045] The configuration of the engagement groove 130 will be described in detail. As shown in FIG. 12, the engagement groove 130 has a first groove portion 131, a second groove portion 132, and a third groove portion 133. The first groove portion 131 extends linearly from the first opening 131a toward the second opening 132a. The first groove portion 131 is formed with a width H1 that is slightly wider than the width of the engagement protrusion 154 provided on the engagement member 150 shown in FIG. 10, i.e., the diameter D1 (see FIG. 13) of the engagement roller 155. In other words, the first groove portion 131 is formed with a width H1 that sandwiches the engagement roller 155 to an extent that it can rotate and slide. The second groove portion 132 extends linearly from the second opening 132a toward the first opening 131a. The second groove portion 132 is formed with a width H2 that is wider than the width H1 of the first groove portion 131 and the diameter D1 of the engagement roller 155. Therefore, the first opening 131a of the engagement groove 130 is larger than the second opening 132a. The third groove portion 133 extends while increasing in width from the first groove portion 131 toward the second groove portion 132. In other words, the third groove portion 133 forms a slope that connects the first groove portion 131 and the second groove portion 132.

[0046] The driving force output member 120 is also provided with a sensor reaction plate 126 that protrudes radially outward from the periphery of the base member 122. The sensor reaction plate 126 is located on the second opening 132a side of the engagement groove 130, and is provided on the base member 122 so as to extend along the extension direction of the engagement groove 130.

[0047] (position detection sensor) As shown in FIGS. 10 and 12 , the pair of position detection sensors 140 are disposed near the driving force output member 120 and fixed to a main body frame (not shown). The pair of position detection sensors 140 are non-contact proximity sensors that detect the sensor reaction plate 126 formed on the driving force output member 120. The pair of position detection sensors 140 are disposed at positions where the detection units and the sensor reaction plate 126 can overlap when viewed from the direction along the rotation axis 120a. The pair of position detection sensors 140 each include an entry-side position detection sensor 141 and an exit-side position detection sensor 142. The entry-side position detection sensor 141 is disposed on the opposite side of the driving force output member 120 from the rotation direction of the feed roller 80 that rotates together with the rotating arm 40 (see the solid arrow in FIGS. 14 and 18 ). On the other hand, the exit-side position detection sensor 142 is disposed on the rotation direction side of the driving force output member 120 of the feed roller 80.

[0048] (Engagement member) An engagement member 150 is provided corresponding to each of the plurality of feed rollers 80. That is, one engagement member 150 is attached to each of the first feed roller 80A and the second feed roller 80B. Figure 13 is a perspective view showing the engagement member 150. As shown in the figure, the engagement member 150 has a main body 152, an engagement protrusion 154, and a weight 156.

[0049] The main body 152 is a substantially triangular plate-like member. A plate-shaped feed roller mounting portion 153 is fixed to one end surface 152a of the main body 152. The engagement protrusion 154 is a protrusion that protrudes from the other end surface 152b of the main body 152 and is composed of multiple (two in this embodiment) engagement rollers 155. The multiple engagement rollers 155 are attached to each of two corners of the substantially triangular main body 152, sandwiching the rotation axis 150a of the engagement member 150. Each engagement roller 155 is rotatable around its own rotation axis relative to the main body 152, and the rotation axes are arranged parallel to each other. Therefore, it can be said that the engagement protrusion 154 extends in a direction perpendicular to the rotation axis 150a of the engagement member 150 due to the multiple engagement rollers 155, while protruding in the same direction as the rotation axis 150a. Furthermore, each engagement roller 155 is formed to have the same diameter D1. The weight 156 is fixed to the delivery roller attachment portion 153 so as to be located at a corner of the main body 152 other than the corner where the engagement roller 155 is located.

[0050] 10, the payout roller mounting part 153 is fixed to the end part 81 of the payout roller 80. This allows both the engagement member 150 and the payout roller 80 to rotate around the central axis 80a. The payout roller 80 is mounted to the payout roller mounting part 153 so that the central axis 80a is located in the center between the rotation axes of the multiple engagement rollers 155 on a straight line connecting the rotation axes of the multiple engagement rollers 155. The position of the central axis 80a is the same as the position of the rotation axis 150a.

[0051] (Operation of the feeding roller drive device) With the above configuration, as shown in Fig. 10, the feed roller drive device 100 transmits the rotational drive force from the servo motor 110 to the feed roller 80 while the engagement member 150 attached to the feed roller 80 is engaged with the drive force output member 120. The operation of the feed roller drive device 100, including the engagement operation between the drive force output member 120 and the engagement member 150, will be described below with reference to Figs. 14 to 18.

[0052] FIG. 14 is an explanatory diagram showing the state in which the engaging member 150 is inserted into the driving force output member 120. FIG. 15 is an explanatory diagram showing a state in which the engaging member 150 is engaged with the driving force output member 120. FIG. 16 is an explanatory diagram showing the state in which the engaged driving force output member 120 and the engaging member 150 rotate. FIG. 17 is an explanatory diagram showing a state in which the engaging member 150 is in a position to be extracted from the driving force output member 120. FIG. 18 is an explanatory diagram showing the state in which the engaging member 150 is extracted from the driving force output member 120. In FIGS. 14 and 18, solid arrows indicate the rotational path and direction of the central shaft 80a when the feed roller 80 rotates in conjunction with the rotation of the rotating arm 40.

[0053] 8 and 9, when the control device 30 moves the reel shaft L from the standby position P2 to the payout position P1, it controls the drive of the swivel arm drive device 200 to turn the swivel arm 40. As a result, the payout roller 80 corresponding to the reel shaft L that will next move to the payout position P1 turns together with the swivel arm 40. The payout roller 80 and the engagement member 150 attached to the payout roller 80 move closer to the drive force output member 120 along the swing path indicated by the solid arrow in FIG.

[0054] At this time, the control device 30 controls the drive of the servo motor 110 so that the driving force output member 120 is held in a predetermined entry-side position Pin. The entry-side position Pin is a position of the driving force output member 120 in which multiple engagement rollers 155 can be inserted into the engagement groove 130 through the second opening 132a. Specifically, the entry-side position Pin is predetermined so that the second opening 132a of the engagement groove 130 faces the direction of the rotational path. As a result, the second opening 132a and the engagement roller 155 located on the rotational direction side (the engagement roller 155 on the left side in the figure that is inserted into the engagement groove 130 first) face each other. In this embodiment, when the driving force output member 120 is in the entry-side position Pin, the entry-side position detection sensor 141 detects the sensor reaction plate 126 provided on the driving force output member 120. The control device 30 determines, based on the detection result of the entry-side position detection sensor 141, that the driving force output member 120 has taken on the entry-side position Pin.

[0055] As described above, the engagement member 150 of this embodiment has the weight 156. Therefore, as shown by the two-dot chain line in the figure, the engagement member 150 maintains a constant posture in which the weight 156 is positioned vertically downward while rotating together with the feed roller 80. Therefore, while the engagement member 150 is rotating, the posture of the engagement roller 155 is also determined to be constant. As a result, the entry-side posture Pin of the drive force output member 120 when inserting the engagement roller 155 can be easily determined in advance. As a result, the engagement roller 155 is inserted into the second opening 132a of the engagement groove 130, which is maintained in the entry-side posture Pin. In this embodiment, the width H2 of the second opening 132a and the second groove portion 132 is formed wider than the diameter D1 of the engagement roller 155, so the engagement roller 155 can be easily inserted into the engagement groove 130.

[0056] As the payout roller 80 continues to rotate, both engagement rollers 155 are inserted into the engagement grooves 130. When the reel shaft L corresponding to that payout roller 80 is positioned at the payout position P1, as shown in FIG. 15 , the engagement roller 155 located on the side facing the turning direction is sandwiched between the first groove portion 131, and the engagement roller 155 located on the side opposite to the turning direction is in contact with one surface located on the lower side of the second groove portion 132. This brings the driving force output member 120 and the engagement member 150 into an engaged state. When engaged, the driving force output member 120 and the engagement member 150 are configured so that the central axis 80a of the payout roller 80 and the rotation axes 120a, 150a are coaxially aligned.

[0057] Then, when the packaging material W can be unwound from the reel shaft L positioned at the unwinding position P1, the control device 30 controls the drive of the servo motor 110 to rotate the drive force output member 120, as indicated by the outline arrow in Fig. 16. As a result, the rotational drive force is transmitted to the engagement member 150 via the engagement roller 155 sandwiched in the first groove portion 131 and the engagement roller 155 abutting against one surface of the second groove portion 132, and the unwinding roller 80 is driven to rotate.

[0058] When the packaging material W on the reel shaft L positioned at the unwinding position P1 is used up, the control device 30 controls the servo motor 110 to maintain the driving force output member 120 in a predetermined delivery position Pout, as shown in FIG. 17 . The delivery position Pout is the position of the driving force output member 120 when the engagement rollers 155 are removed from the engagement groove 130. Specifically, the delivery position Pout is predetermined so that the second opening 132a of the engagement groove 130 faces in a direction along the above-mentioned rotation path, as shown in FIG. 18 . In this embodiment, when the engagement groove 130 reaches the delivery position Pout, the delivery position detection sensor 142 detects the sensor reaction plate 126 provided on the driving force output member 120. The control device 30 determines that the driving force output member 120 has reached the delivery position Pout based on the detection result of the delivery position detection sensor 142. In this way, the pair of position detection sensors 140 can be said to be sensors that detect the orientations of the driving force output member 120, that is, the inlet orientation Pin and the outlet orientation Pout, by detecting the sensor reaction plate 126.

[0059] When the pivot arm 40 starts pivoting again to move the reel shaft L, which was at the reel-out position P1, to the standby position P2, the engaging member 150 pivots together with the reel-out roller 80, as shown in FIG. 18. This causes the engaging roller 155, which is located on the reel-out direction side, to be pulled out of the second opening 132a of the engagement groove 130, and the engagement between the driving force output member 120 and the engaging member 150 is released. Because the width H2 of the second opening 132a is larger than the diameter D1 of the engaging roller 155, the engaging roller 155 can be easily pulled out of the second opening 132a. When the engagement between the driving force output member 120 and the engaging member 150 is released, the engaging member 150 assumes a position in which the weight 156 is positioned vertically below, as indicated by the two-dot chain line in the figure, and continues to pivot together with the reel-out roller 80.

[0060] (Effects of the embodiment) As described above, the packaging material supply device 10 according to the embodiment includes a plurality of reel shafts L on which packaging material W is loaded, a pivot arm 40 rotatably attached to a main body frame (not shown) and configured to pivot the plurality of reel shafts L between a payout position P1 where the packaging material W is paid out and used and a standby position P2 before the packaging material W is paid out and used, a plurality of payout rollers 80 provided on the pivot arm 40 corresponding to each of the plurality of reel shafts L and which pay out the packaging material W from the reel shafts L, and a payout roller rotatably driving the plurality of payout rollers 80. The payout roller drive device 100 includes a servo motor 110 (rotational drive source) provided on the main body frame, a drive force output member 120 that can rotate by the rotational drive force from the servo motor 110, and an engagement member 150 that is provided corresponding to each of the plurality of payout rollers 80 and that engages with the drive force output member 120 to transmit the rotational drive force from the drive force output member 120 to the payout rollers 80 when the reel shaft L moves to the payout position P1 as the swivel arm 40 rotates.

[0061] With this configuration, when the reel shaft L moves to the unwinding position P1, the engaging member 150 engages with the drive force output member 120 provided on the main body frame, thereby transmitting a rotational drive force to the unwind roller 80. In other words, by simply providing each unwind roller 80 with an engaging member 150 that can engage with the drive force output member 120, it is possible to provide only one servo motor 110 (rotational drive source), one drive force output member 120, and a mechanism for transmitting power between them (first pulley 112, second pulley 114, belt 116), etc. on the main body frame, and they do not need to rotate together with the pivot arm 40. Therefore, with the packaging material supply device 10 according to this embodiment, it is possible to apply a rotational drive force to multiple unwind rollers 80 that rotate together with multiple reel shafts L, using a simple structure.

[0062] Either the driving force output member 120 or the engaging member 150 has an engaging groove 130 with 130a formed in at least one end, and the other of the driving force output member 120 or the engaging member 150 has an engaging protrusion 154 that is inserted into the engaging groove 130 through the opening 130a and is sandwiched in the engaging groove 130. This configuration makes it possible to easily engage the driving force output member 120 and the engaging member 150.

[0063] Furthermore, the engagement groove 130 is formed in the drive force output member 120, and the engagement protrusion 154 is formed in the engagement member 150, and is an engagement roller 155 that is rotatable about its own axis. With this configuration, the engagement roller 155 can be smoothly inserted into and removed from the engagement groove 130 while being rotated. Furthermore, because the engagement roller 155 rotates together with the swivel arm 40, when the engagement roller 155 needs to be replaced due to wear, the swivel arm 40 can be positioned to make it easy to replace the engagement roller 155, allowing for easy replacement.

[0064] Furthermore, the engagement groove 130 has a first groove portion 131 that sandwiches the engagement protrusion 154, and a second groove portion 132 that extends from the second opening 132a toward the first groove portion 131, and the second opening 132a and the second groove portion 132 are formed to have a width H2 that is wider than the engagement protrusion 154 (the diameter D1 of the engagement roller 155). With this configuration, the engagement protrusion 154 (the engagement roller 155) can be smoothly inserted into and removed from the engagement groove 130 via the second opening 132a and the second groove portion 132.

[0065] The engagement groove 130 has a first groove portion 131 and a second groove portion 132 formed in a straight line, and a third groove portion 133 that forms a slope connecting the first groove portion 131 and the second groove portion 132. With this configuration, the engagement groove 130 can be formed in a simple shape.

[0066] The device further includes a control device 30 that drives and controls the servo motor 110 of the payout roller drive device 100. When engaging the drive force output member 120 with the engagement member 150, the control device 30 drives and controls the servo motor 110 so that the drive force output member 120 is held in an entry position in which the engagement protrusion 154 can be inserted into the engagement groove 130 through the opening 130a, and when disengaging the drive force output member 120 from the engagement member 150, the control device 30 drives and controls the servo motor 110 so that the drive force output member 120 is held in an exit position in which the engagement protrusion 154 can be removed from the engagement groove 130 through the opening 130a.

[0067] With this configuration, the control device 30 holds the driving force output member 120 in the inlet position Pin, so that the engaging member 150 that is turning and approaching can easily engage with the driving force output member 120. Furthermore, the control device 30 holds the driving force output member 120 in the outlet position Pout, so that the engagement between the engaging member 150 that is turning and trying to disengage and the driving force output member 120 can be easily released.

[0068] The engaging member 150 also has a weight 156 for maintaining its position while it is rotating together with the delivery roller 80. With this configuration, by keeping the position of the engaging member 150 constant while it is rotating, the position of the engaging protrusion 154 (engagement roller 155) can also be kept constant. This makes it possible to easily determine the upper writing side position Pin of the driving force output member 120.

[0069] (Variation) Although the description of the embodiment is now complete, the aspects of the present invention are not limited to this embodiment. In this embodiment, the multiple reel shafts L include a first reel shaft LA and a second reel shaft LB, but the number of reel shafts L is not limited to two and may be three or more.

[0070] In addition, in this embodiment, the driving force output member 120 has the engagement groove 130, and the engaging member 150 has the engagement protrusion 154 (engagement roller 155). However, the engagement structure between the driving force output member 120 and the engaging member 150 may be any structure as long as they can be engaged and disengaged with each other. Alternatively, the driving force output member 120 may have the engagement protrusion 154 (engagement roller 155), and the engaging member 150 may have the engagement groove 130. Furthermore, a plurality of engagement grooves 130 and a plurality of engagement protrusions 154 may be provided on the driving force output member 120 and the engaging member 150. In this case, both the driving force output member 120 and the engaging member 150 may have a plurality of engagement grooves 130 and a plurality of engagement protrusions 154, as long as they have shapes that allow them to engage with each other as the swing arm 40 swings.

[0071] Furthermore, in this embodiment, the engagement protrusion 154 is configured by the engagement roller 155, but the engagement protrusion 154 may have any shape, such as a convex shape extending along the engagement groove 130, as long as it can be inserted into and removed from the engagement groove 130 and can be sandwiched in the engagement groove 130. Furthermore, it is sufficient that at least one engagement roller 155 is disposed, and three or more engagement rollers 155 may also be disposed.

[0072] In addition, in this embodiment, the engagement groove 130 has openings 130a at both ends, but the ends of the engagement groove 130 may be closed. In other words, the engagement groove 130 may have only the second opening 132a.

[0073] Furthermore, in this embodiment, the second opening 132a and the second groove portion 132 are formed to a width H2 that is wider than the width of the engagement protrusion 154 (the diameter D1 of the engagement roller 155), but the engagement groove 130 may be formed to a size that allows the engagement protrusion 154 to be inserted and removed and to be sandwiched therein. In other words, the engagement groove 130 may be formed entirely of the first groove portion 131, and may have an opening 130a at either end.

[0074] In addition, in this embodiment, the first groove portion 131 and the second groove portion 132 are formed linearly, and the third groove portion 133 is formed between the first groove portion 131 and the second groove portion 132, forming a slope, but the shape of the engagement groove 130 is not limited to this. For example, the second groove portion 132 may be shaped to extend from the first groove portion 131 toward the second opening 132a while increasing in width.

[0075] Furthermore, the engagement groove 130 may extend in an arc shape along the rotation path of the engagement member 150 (preferably the rotation path of the engagement protrusion 154). In this case, too, it is preferable that the opening 130a or the groove portion on the side where the engagement protrusion 154 is inserted or removed is wider than the engagement protrusion 154.

[0076] In this embodiment, the engaging protrusion 154 is inserted into and removed from the second opening 132a in both the inlet position Pin and the outlet position Pout. However, the engaging protrusion 154 may be inserted into and removed from the first opening 131a. That is, the opening 130a through which the engaging protrusion 154 is inserted and removed may be different between the inlet position Pin and the outlet position Pout. In this case, the sensor reaction plate 126 may be provided in a position corresponding to both of the openings 130a of the engagement groove 130. This allows the control device 30 to determine whether the driving force output member 120 has reached the inlet position Pin or the outlet position Pout based on the pair of position detection sensors 140 detecting the sensor reaction plate 126.

[0077] Furthermore, if the posture of the engaging protrusion 154 when inserted into the engaging groove 130 can be kept constant, or if the control device 30 can detect this posture and determine the entry posture Pin of the driving force output member 120, the weight 156 may be omitted from the engaging member 150. [Explanation of symbols]

[0078] 1 Bag making, filling and packaging machine 10 Packaging material supply device 20 Bag making and packaging equipment 30 Control device 40 Swivel Arm 40a center axis 41 Reel shaft support member 42 Frame members 50 Retaining member 60 connection units 70 Connector 80 Feed roller 85 Receiving roller 100 Payout roller drive device 110 Servo motor (rotation drive source) 120 driving force output member 120a, 150a rotating shaft 130 engagement groove 130a aperture 131 First groove 131a 1st opening 132 Second groove 132a 2nd opening 133 Third Groove 140 Position detection sensor 150 Engagement member 154 Engagement protrusion 155 Engagement roller 156 Weight L reel shaft P1 Feeding position P2 Standby position Pin entrance position Pout Outward posture W packaging material WR packaging roll

Claims

1. a plurality of reel shafts loaded with packaging material; a pivoting arm rotatably attached to the main body frame, which pivots the plurality of reel shafts between a feeding position where the packaging material is fed and used and a standby position before the packaging material is fed and used; a plurality of pay-out rollers provided on the pivot arm corresponding to the plurality of reel shafts, the pay-out rollers paying out the packaging material from the reel shafts; a delivery roller drive device that drives and rotates the plurality of delivery rollers; Equipped with The delivery roller driving device a rotation drive source provided on the main body frame; a driving force output member that is rotatable by the rotational driving force from the rotary driving source; an engaging member provided corresponding to each of the plurality of payout rollers, the engaging member engaging with the driving force output member to transmit a rotational driving force from the driving force output member to the payout roller when the reel shaft moves to the payout position as the pivot arm pivots; A packaging material supply device having the same.

2. one of the driving force output member and the engaging member has an engaging groove with an opening formed in at least one end thereof, The other of the driving force output member and the engaging member has an engaging protrusion that is inserted into the engaging groove through the opening and is sandwiched in the engaging groove. The packaging material supply device according to claim 1 .

3. the engagement groove is formed in the driving force output member, The engaging projection is an engaging roller formed on the engaging member and rotatable around its own axis. The packaging material supply device according to claim 2 .

4. The engagement groove has a first groove portion that sandwiches the engagement protrusion and a second groove portion that extends from the opening toward the first groove portion, The opening and the second groove are formed to have a width greater than the width of the engaging projection. The packaging material supplying device according to claim 2 or 3.

5. 5. The packaging material supply device according to claim 4, wherein the engagement groove has the first groove portion and the second groove portion formed in a straight line, and a third groove portion forming a slope connecting the first groove portion and the second groove portion.

6. a control device that controls the drive of the rotation drive source of the delivery roller drive device, The control device driving and controlling the rotational drive source so that, when the drive force output member and the engagement member are engaged with each other, the drive force output member is held in an insertion position in which the engagement projection can be inserted into the engagement groove through the opening; When the engagement between the driving force output member and the engaging member is released, the driving of the rotational driving source is controlled so that the driving force output member is held in an output position in which the engaging projection can be extracted from the engaging groove through the opening. The packaging material supplying device according to claim 2 or 3.

7. 7. The packaging material supplying device according to claim 6, wherein the engaging member has a weight for maintaining a position while rotating together with the feed roller.

Images