JP2023177811A - Packaging material feeder - Google Patents

Abstract

To provide a packaging material feeder for a bag making, filling and packaging machine that can reduce work time and thus improve operating efficiency by facilitating the work of loading packaging material onto multiple reel shafts.SOLUTION: A packaging material feeder 10 of a bag making, filling, and packaging machine 1 has a plurality of reel shafts L onto which packaging material W is loaded, and a swivel arm 40 that swivels the plurality of reel shafts L between an ejection position P1 where the packaging material W is ejected for use and a standby position P2 before the packing material W is ejected for use. The plurality of reel shafts L are mounted on the swivel arm 40 so as to rotate around a loading rotation axis Z in which an angle between the plurality of reel shafts L and a central axis 40a of the swivel arm 40 is different between when the packaging material is supplied and when the packaging material is loaded.SELECTED DRAWING: Figure 12

Description

Application for application of Article 30, Paragraph 2 of the Patent Act has been filed Published at JAPAN PACK 2022 (Japan Packaging Industry Exhibition) held from February 15th to February 18th, 2022. It was delivered to the customer on March 5, 2022. It was delivered to the customer on March 26, 2022.

The present invention relates to a packaging material supply device.

2. Description of the Related Art Conventionally, there has been known a technology related to a packaging machine equipped with a packaging material supply device that loads packaging materials onto a plurality of reel shafts and switches the packaging material to be used. For example, Patent Document 1 discloses a bag making, filling and packaging machine in which an upper winding roll and a lower winding roll are respectively loaded onto an upper winding shaft and a lower winding shaft which are fixedly arranged vertically. There is. In this bag-forming-fill-sealing machine, the upper winding shaft and the lower winding shaft are each rotatable around shafts extending in the vertical direction.

Patent No. 6125204

In the bag-forming-fill-sealing machine described in Patent Document 1, the upper winding shaft and the lower winding shaft are rotatable, so that packaging material can be easily loaded onto each winding shaft when replacing the packaging material roll. are doing. However, since the upper winding shaft and the lower winding shaft are fixed vertically, it becomes difficult to load the packaging material depending on the height position of each winding shaft, and the process takes time. There is a risk that the operating efficiency of the bag filling and packaging machine will decrease.

The present invention has been made in view of these problems, and its purpose is to shorten the work time by facilitating the loading of packaging materials onto a plurality of reel shafts, thereby reducing operational time. An object of the present invention is to provide a packaging material supply device that can improve efficiency.

In order to achieve the above object, the packaging material supply device of the present invention includes a plurality of reel shafts into which packaging materials are loaded, a feeding position where the packaging materials are fed out and used, and a position where the packaging materials are fed out and used before being used. a rotating arm that rotates the plurality of reel shafts between the standby position and the plurality of reel shafts, and the plurality of reel shafts have an angle between them and a central axis of the rotating arm when supplying packaging material and when loading packaging material. It is attached to the pivot arm so as to be rotatable about a loading rotation axis at different angles.

With this configuration, the plurality of reel shafts are rotated between the feeding position and the standby position by the rotating arm, so that it is possible to predetermine the standby position where it is easy for the worker to load the packaging material. In addition, since the reel shaft can rotate around the loading rotation axis, which makes the angle between the reel shaft and the central axis of the swing arm different when feeding packaging material and when loading packaging material, the reel shaft can be rotated at a predetermined angle. It is possible to easily load packaging materials by rotating the rotating arm so that the packaging material is loaded. Therefore, according to the packaging material supply device of the present invention, by making it easier to load packaging materials onto a plurality of reel shafts, it is possible to shorten the working time and improve operational efficiency. .

Further, it is preferable that the loading rotation shaft is located on the opposite side of the central axis of the rotating arm with the reel shaft in between. With this configuration, when the reel shaft is moved to the packaging material loading position, the member rotating with the reel shaft is aligned with the center axis of the swing arm, compared to when the rotation shaft is closer to the swing arm than the reel shaft. The area that extends in the direction becomes smaller, and the installation space can be reduced.

Further, the packaging material supply device further includes a plurality of locking mechanisms provided corresponding to each of the plurality of reel shafts and locking the rotation of the reel shaft about the loading rotation axis with respect to the rotation arm, The mechanism includes a frame member rotatable around the loading rotation axis together with the reel shaft, a lock shaft rotatably attached to the frame member around its own axis, and a mechanism that rotates the lock shaft around its own axis. A handle and a rotating arm are provided opposite to the tip of the lock shaft, and when the lock shaft rotates around its own axis, the reel shaft and the frame member cannot rotate around the loading rotation axis. It is preferable to have a lock block that can be lockingly engaged with the tip.

With this configuration, when the reel shaft rotates around the loading rotation axis relative to the swing arm, the lock shaft also rotates together with the frame member around the loading rotation axis in the same direction. Therefore, simply by moving the reel shaft, the lock shaft attached to the frame member can be easily moved relative to the lock block provided on the swing arm. In addition, the operator must rotate the reel shaft around the loading rotation axis so that it is in the position when loading the packaging material, then replace the packaging material on the reel shaft with a new one, and then rotate the reel shaft again around the loading rotation axis. Rotate it around and set it to the position when supplying packaging material. When the operator rotates the lock shaft with the handle, the tip of the lock shaft is locked into locking engagement with the lock block, making it easy to lock the rotation of the reel shaft relative to the rotating arm when supplying packaging material. can.

Further, the tip of the lock shaft has a pair of first surfaces that extend in an arc shape while facing each other, and a pair of second surfaces that extend between the pair of first surfaces while facing each other, The lock block has a circular first groove and extends in a long hole shape from the first groove along a trajectory in which the tip of the lock shaft moves as the reel shaft rotates with respect to the swing arm. and a second groove, the first groove is formed to be slidable on the pair of first surfaces, and the second groove is longer than the maximum distance between the pair of first surfaces. It is preferable that the width is narrow and wider than the distance between the pair of second surface parts.

With this configuration, the tip of the lock shaft and the lock block can be easily locked and engaged without shifting in the rotational direction around the loading rotation axis, without providing a complicated mechanism on the tip of the lock shaft or the lock block. can do.

Further, it is preferable that the frame member is provided with a guide member that guides the tip end of the lock shaft with respect to the engagement groove of the lock block. With this configuration, the lock shaft can be easily inserted into and removed from the engagement groove of the lock block.

The packaging material supply device also includes an air path through which air flows, a rotary joint that is attached to the central axis of the swing arm and forms a part of the air path, and a pressure sensor that detects the pressure in the air path. a detection sensor; a mechanical valve that switches the air path between an exhaust state and a non-exhaust state depending on whether a push button is pressed or not; and a mechanical valve that is attached to the lock shaft and rotates together with the lock shaft. , the push button of the mechanical valve is not pressed when the tip is not in locking engagement with the lock block, and the push button of the mechanical valve is not pushed when the tip is in locking engagement with the lock block. a pressing contact member; and a control device that determines whether rotation of the reel shaft with respect to the swing arm by the lock mechanism is locked based on the pressure in the air path detected by the pressure detection sensor. It is preferable to further provide.

With this configuration, an electric sensor is installed at the part that rotates around the central axis of the swing arm to detect whether the tip of the lock shaft is locked or not engaged with the lock block. Detection can be performed based on pressure changes in the air path without the need for any installation. Therefore, it is possible to suppress an increase in electrical wiring around the swing arm.

Further, the abutting member is provided on the handle. With this configuration, there is no need to separately provide a contact member that needs to rotate together with the lock shaft, so it is possible to suppress an increase in the number of parts.

According to the packaging material supply device of the present invention, it is possible to easily load packaging materials onto a plurality of reel shafts, thereby improving operational efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view schematically showing a bag-forming-filling-sealing machine including a packaging material supply device according to an embodiment. 1 is a configuration diagram showing an outline of a system configuration of a bag making, filling and packaging machine. FIG. 2 is a side view schematically showing a packaging material supply device. It is a perspective view showing an outline of a packaging material supply device. FIG. 3 is an enlarged side view showing the packaging material supply device in the vicinity of the holding member. FIG. 3 is an explanatory diagram showing how the terminal end of the preceding packaging material and the leading end of the trailing packaging material are connected by a connector. FIG. 3 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. 3 is an explanatory diagram showing the state of the packaging material supply device in steps S3 and S4 during execution of packaging material supply control. FIG. 6 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. It is a perspective view showing a part of packaging material supply device seen from the base end side of a reel shaft. FIG. 3 is a perspective view showing a part of the packaging material supply device as seen from the base end side of the reel shaft in a state where the reel shaft is open. FIG. 3 is a perspective view showing a part of the packaging material supply device as seen from the distal end side of the reel shaft in a state where the reel shaft is open. FIG. 6 is an explanatory diagram showing a state in which the tip of the lock shaft and the engagement groove of the lock block are locked and engaged. FIG. 3 is a cross-sectional view showing the tip of the lock shaft. It is a front view showing a lock block. FIG. 7 is an explanatory diagram showing a process in which the tip end of the lock shaft is locked into the engagement groove of the lock block. FIG. 2 is a schematic configuration diagram showing main parts of an operating state detection device for a lock mechanism.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

(Bag making, filling and packaging machine)
FIG. 1 is a perspective view schematically showing a bag-forming-fill-sealing machine including a packaging material supply device according to an embodiment, and FIG. 2 is a configuration diagram schematically showing a system configuration of the bag-forming-filling-sealing machine. The bag making, filling and packaging machine 1 includes a packaging material supply device 10 according to the embodiment, a bag making and packaging device 20, and a control device 30 (see FIG. 2).

(Packaging material supply device)
The packaging material supply device 10 is a device that supplies the 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 includes a plurality of (in this embodiment, two) reel shafts L (see FIG. 3), and feeds a plurality of packaging materials W from a packaging material roll WR loaded onto each reel shaft L. It is supplied to the bag making and packaging apparatus 20 via the path roller R1. The plurality of path rollers R1 are tension adjustment mechanisms called 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 the movable rolls. Contains 14. The detailed configuration of the packaging material supply device 10 will be described later.

(bag making and packaging equipment)
The bag making and packaging device 20 is a device that forms the packaging material W supplied from the packaging material supply device 10 into a bag shape, and fills the formed bag with a filler such as powder or snacks. In addition, in FIG. 1, some illustrations of the packaging material W passing through the bag making and packaging apparatus 20 are omitted. 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 contents. A filling tube 26 is disposed within the bag making tube, and the filling tube 26 projects upward from the bag making tube 22 and is connected to the hopper 21 . Furthermore, a former 27 is provided at the top of the bag-making tube 22 to form and guide the packaging material W supplied from the packaging material supply device 10 into a substantially cylindrical shape. When 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 manner. A pair of feed-out belts 23 (packaging material feeders) are provided on both sides of the bag-making tube 22, and the pair of feed-out belts 23 feed the packaging material W extending along the periphery of the bag-making tube 22 downward. It will be done. Note that a forming guide (not shown) is provided below the bag-making tube 22 to form the packaging material W into a predetermined shape.

Further, a vertical sealer 24 that can be opened and closed is provided near the bag-making tube 22. The vertical sealer 24 heat-seals the wrap portion of the packaging material W to form a vertical seal flap with both side edges adhered to each other. Further, below the bag-making tube 22, a horizontal sealer 25 that can be opened and closed is provided. The horizontal sealer 25 has a pair of heater blocks 25a and 25b and a cutter (not shown). When the horizontal sealer 25 performs a closing operation, the pair of heater blocks 25a and 25b sandwich the packaging material W from the front and back, forming a horizontal seal on the packaging material W, and the packaging material W is cut by the cutter. Thereby, the upper and lower ends of the packaging material W are closed by horizontal seals, and a bag F filled with the contents supplied from the hopper 21 via the filling tube 26 is formed, as shown in FIG.

(Control device)
The control device 30 is a controller that performs overall control of the bag making, filling and packaging machine 1. As shown in FIG. 2, the control device 30 has a setting input device 2, an optical sensor 90 (described later), a plurality of pressure detection sensors 494 (described later), etc. electrically connected to the input side of the control device 30. The control device 30 also includes a tension adjustment mechanism 14, a feeding roller drive device 100, a swing arm driving device 200, a connector 70 (described later), a feeding belt 23, a vertical sealer 24, a horizontal sealer 25, and a plurality of air pumps (described later) on the output side. A supply valve 496 and the like are electrically connected.

The setting input device 2 is an interface for an operator to input various setting values for driving the bag making, filling and packaging machine 1. The optical sensor 90 is a sensor for detecting the terminal end E (see FIGS. 6 and 8) of the packaging material W. Note that an ultrasonic sensor or the like may be used instead of the optical sensor 90. In that case, the reflecting plate 91 described later may be omitted. The feed roller drive device 100 is a device that rotationally drives a plurality of feed rollers 80, which will be described later, and includes at least a servo motor (not shown). The swing arm drive device 200 is a device that rotationally drives a swing 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 inputted by an operator using the setting input device 2 . Further, in the present embodiment, the control device 30 supplies the packaging material W to the bag making and packaging device 20 while selectively switching the packaging material rolls WR loaded onto the plurality of reel shafts L of the packaging material supplying device 10. Execute packaging material supply control. Details of the packaging material supply control will be described later.

(Detailed configuration of packaging material supply device)
Next, a detailed configuration of the packaging material supply device 10 according to the embodiment will be described. FIG. 3 is a side view schematically showing the packaging material supply device 10, and FIG. 4 is a perspective view schematically showing the packaging material supply device 10. In addition, in FIG. 4, description of some components of the packaging material supply device 10 is omitted. The packaging material supply device 10 includes the plurality of reel shafts L, a rotating arm 40 centered on the central axis 40a, a plurality of holding members 50, a plurality of connection stands 60, a connector 70, and a plurality of feeding rollers. 80, a receiving roller 85, an optical sensor 90, the feeding roller drive device 100, and the swing arm drive device 200.

(Multiple reel axes)
The plurality of reel shafts L are arranged at positions rotated by a predetermined angle from each other with respect to the central axis 40a of the rotating arm 40. The same applies to the members provided corresponding to the reel axis L below. In this embodiment, the plurality of reel axes L include a first reel axis LA and a second reel axis LB that are parallel to each other. As shown in FIG. 3, the first reel axis LA and the second reel axis LB are arranged at positions rotated by 180 degrees (deg) with respect to the central axis 40a of the swing arm 40. Each reel shaft L is provided with a disc D (see FIGS. 10 to 12) for applying braking force to the rotation of the reel shaft L by being pressed or sandwiched by an air-driven brake device 5 (see FIGS. 10 to 12). 12) is attached.

As shown in FIG. 3, the first reel axis LA and the second reel axis LB are moved by the rotating arm 40 to a feeding position P1 where the packaging material W is fed and used, and a standby position before the packaging material W is fed and used. It is configured to be able to rotate and switch positions between P2 and P2. In the following explanation, the packaging material W that is used in advance from the packaging material roll WR loaded on the reel shaft L at the feeding position P1 is referred to as "preceding packaging material W1", and the packaging material W that is used after the preceding packaging material W1 is referred to as "preceding packaging material W1". The packaging material W, that is, the packaging material W of the packaging material roll WR loaded on the reel shaft L at the standby position P2 is referred to as a "trailing packaging material W2." Furthermore, in the following description, the directions of the components of the packaging material supply device 10 will be defined based on the state in which each reel shaft L is in the feeding position P1 and the standby position P2. Furthermore, in the following description, the axial direction of the swing arm 40 is simply referred to as the "axial direction" to define the direction of the components of the packaging material supply device 10. Note that the up-down direction in FIG. 3 is the vertical up-down direction, the left-right direction is the horizontal direction, and the paper direction is the above-mentioned axial direction.

(swivel arm)
As described above, the swing arm 40 is a member that swings the first reel shaft LA and the second reel shaft LB between the payout position P1 and the standby position P2. The swing arm 40 is rotatably attached to a main body frame (not shown) of the packaging material supply device 10 about a central axis 40a. A servo motor (not shown) of the swing arm drive device 200 is connected to the center shaft 40a. The rotating arm 40 can be rotated about a central axis 40a by driving a servo motor, and can be fixed at an arbitrary angle.

A plurality of (in this embodiment, two) reel shaft support members 41 that support the reel shaft L are attached to the swing arm 40. The reel shaft support member 41 includes a first reel shaft support member 41A that extends toward the first reel shaft LA side and rotatably supports the first reel shaft LA, and a first reel shaft support member 41A that extends toward the second reel shaft LB side and rotatably supports the first reel shaft LA. and a second reel shaft support member 41B that rotatably supports the second reel shaft support member 41B. The first reel shaft support member 41A and the second reel shaft support member 41B have the same configuration except that they are arranged at positions rotated by 180 degrees (deg) with respect to the central axis 40a.

Further, a plurality of (in this embodiment, two) frame members 42 are attached to the swing arm 40 via each reel shaft support member 41 . The frame member 42 includes a first frame member 42A extending above the packaging material roll WR loaded on the first reel shaft LA, and a first frame member 42A extending below the packaging material roll WR loaded on the second reel shaft LB. It has a second frame member 42B. The first frame member 42A and the second frame member 42B have the same configuration except that they are arranged at positions rotated by 180 degrees (deg) relative to the central axis 40a. A plurality of (in this embodiment, two) path rollers R2 for guiding the packaging material W are provided at the tip of the first frame member 42A. Similarly, a plurality (in this embodiment, two) of path rollers R2 for guiding the packaging material W are provided at the tip of the second frame member 42B.

Further, a reflecting plate 91 of the 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 a sensor that is disposed near the reel axis L at the payout position P1, emits light toward the reflective plate 91, and receives reflected light from the reflective plate 91. . The optical sensor 90 detects whether or not the packaging material W (i.e., the preceding packaging material W1) exists between it and the reflecting plate 91 according to the intensity of the received reflected light, and sends the detection result to the control device 30. Output.

(Holding member)
The holding member 50 is a member for holding a connection stand 60 and a feeding roller 80, which will be described later. As shown in FIG. 4, the holding members 50 are provided as a pair at both ends in the axial direction of the plate member 44 provided at the ends in the vertical direction of the swing arm 40. The holding member 50 includes a first holding member 50A provided corresponding to the first reel axis LA, and a second holding member 50B provided corresponding to the second reel axis 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 arranged at positions rotated by 180 degrees (deg) with respect to the central axis 40a.

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-like member, and includes a leg portion 51, a connection stand holding portion 52, and a roller holding portion 53. The leg portion 51 is a portion that extends from the plate member 44 in the vertical direction. The connection stand holding portion 52 extends from the leg portion 51 on both sides in the horizontal direction. A path roller R3 for guiding the packaging material W is provided at the end of the connecting table holder 52 on the corresponding reel axis L side (left side in FIG. 4) in the horizontal direction. The roller holding portion 53 is a portion extending in a substantially triangular shape toward the opposite side from the leg portions 51 at the horizontal center portion of the connection stand holding portion 52 . The roller holding section 53 rotatably supports the shaft end of the feeding roller 80.

(Connection stand)
The plurality of connection stands 60 will be explained with reference to FIGS. 3 to 5. The connecting base 60 is a member that serves as a base when connecting the leading end portion S of the preceding packaging material W1 and the trailing packaging material W2 using the connector 70. That is, the connecting stand 60 is a member that sandwiches the preceding packaging material W1 and the trailing packaging material W2 between a pair of heater blocks 71 of a connector 70, which will be described later.

The connection stand 60 is provided corresponding to the reel shaft L loaded with the packaging material roll WR of the preceding packaging material W1, in order to connect the trailing packaging material W2 to the preceding packaging material W1. Specifically, the connection stand 60 includes a first connection stand 60A provided corresponding to the first reel axis LA, and a second connection stand 60B provided corresponding to the second reel axis LB. As shown in FIG. 3, the first connection stand 60A is attached to the first holding member 50A, and the second connection stand 60B is attached to the second holding member 50B. As shown in FIG. 3, the first connection stand 60A and the second connection stand 60B have the same configuration except that they are arranged at positions rotated by 180 degrees (deg) with respect to the central axis 40a.

As shown in FIG. 4, each connection stand 60 extends between a pair of holding members 50 in the axial direction so as to be wider than the width of the packaging material W, and connects each holding member 50. It is held by the stand holding part 52. The connection stand 60 is arranged on the opposite side in the horizontal direction (on the right side in FIG. 4) of the corresponding reel axis L with respect to the feeding roller 80 held by the holding member 50. The connection stand 60 has a clamp mechanism 61 and two pedestals 62. The clamp mechanism 61 is configured so that an operator can manually open and close it up and down to clamp the leading end of the trailing packaging material W2. The two pedestals 62 are provided with an interval corresponding to a pair of heater blocks 71 of a connector 70 to be described later, and between the pair of heater blocks 71, the leading end portions of the leading packaging material W1 and the trailing packaging material W2 are connected. This is the part that sandwiches S. Furthermore, a path roller R4 for guiding the trailing packaging material W2 is provided near the pedestal portion 62 of the connection table 60.

(connector)
As shown in FIG. 3, the connector 70 is located above a connecting base 60 (first connecting base 60A in FIG. 3) provided on the holding member 50 that holds the feeding roller 80 that is feeding out the preceding packaging material W1. It is set up so that The connector 70 is arranged on the downstream side in the direction in which the preceding packaging material W1 is fed out, rather than a feed-out roller 80, which will be described later. The connector 70 includes a pair of heater blocks 71 and a cutter 72 disposed between the pair of heater blocks 71. In the connector 70, a pair of heater blocks 71 and a cutter 72 are movable in the vertical direction, and are driven and controlled by the control device 30. In addition, in this embodiment, the connector 70 has a pair of heater blocks 71, but the connector 70 has another sealer capable of connecting the packaging materials W to each other, such as an ultrasonic sealer. Good too. In that case, it is only necessary that the connector 70 includes an ultrasonic vibration horn of an ultrasonic sealer, and the connection stand 60 includes an anvil serving as a fixing jig for sandwiching the packaging material W between the connector 70 and the ultrasonic vibration horn.

FIG. 6 is an explanatory diagram showing how the leading end portion S of the preceding packaging material W1 and the trailing packaging material W2 are connected by the connector 70. As shown in the figure, the connector 70 heat-welds the leading ends S of the leading packaging material W1 and the trailing packaging material W2, which are stacked vertically, while pressing them against the pedestal part 62 of the connecting base 60 with a pair of heater blocks 71. Glue and connect. Then, the cutter 72 cuts the bonded leading packaging material W1 and the leading end S of the trailing packaging material W2. As a result, of the bonded leading packaging material W1 and trailing packaging material W2, the portion located downstream of the cutter 72 in the feeding direction becomes one continuous packaging material W. On the other hand, of the bonded leading packaging material W1 and trailing packaging material W2, the portion located upstream of the cutter 72 in the feeding direction becomes one scrap. By arranging the cutter 72 between the pair of heater blocks 71 in this way, it is possible to leave a single piece of paper that is glued to each other, making it easier to dispose of the piece. Note that the scraps naturally fall into the packaging material supply device 10. The process of connecting the leading end S of the leading packaging material W1 and the trailing packaging material W2 by the pair of heater blocks 71 and the cutting process of the cutter 72 are performed before the end part E of the leading packaging material W1 passes through the feeding roller 80. be exposed.

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

As shown in FIGS. 4 and 5, each feeding roller 80 is rotatably supported at its axial end by a pair of roller holding portions 53 of the holding member 50 provided in the axial direction. Each feeding roller 80 is rotationally driven by a servo motor (not shown) of the feeding roller driving device 100. Further, as shown in FIGS. 3 and 4, the upper part of the feeding roller 80 (first feeding roller 80A in FIGS. 3 and 4) corresponding to the reel shaft L loaded with the packaging material roll WR of the preceding packaging material W1 is A rotatable receiving roller 85 is arranged. The receiving roller 85 is configured to be movable substantially in the vertical direction, and can sandwich the preceding packaging material W1 between it and the feeding roller 80. As a result, when the feed roller 80 is rotationally driven by a servo motor (not shown), the preceding packaging material W1 sandwiched between the feed roller 80 and the receiving roller 85 is fed out from the packaging material roll WR by the rotation of the feed roller 80. .

Here, as shown in FIG. 3, the first feeding roller 80A and the receiving roller 85 are provided closer to the first reel axis LA than the connector 70, as shown in FIG. That is, in the feeding direction of the preceding packaging material W1, the feeding roller 80 and the receiving roller 85 move the preceding packaging material beyond the connection position CP (see FIG. 6) between the preceding packaging material W1 and the trailing packaging material W2 by the connector 70. It is provided on the reel shaft L side loaded with W1. The reel shaft L side loaded with the preceding packaging material W1 means the upstream side in the feeding direction of the preceding packaging material W1.

(Operation of bag making, filling and packaging machine)
The operation of the bag making, filling and packaging machine 1 configured as above will be explained with reference to FIGS. 7 to 9. 7 to 9 show the states of the packaging material supply device 10 from step S1 to step S6 while the control device 30 is executing the packaging material supply control. FIG. 7 is an explanatory diagram showing the state of the packaging material supply device 10 in steps S1 and S2 during execution of packaging material supply control. FIG. 8 is an explanatory diagram showing the state of the packaging material supply device 10 in steps S3 and S4 during execution of packaging material supply control. FIG. 9 is an explanatory diagram showing the state of the packaging material supply device 10 at steps S5 and S6 during execution of packaging material supply control.

First, as shown in step S1 in FIG. 7, it is assumed 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 material roll WR loaded on the first reel shaft LA is in a state of being sandwiched between the first feeding 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 drives and controls the feed-out roller drive device 100 and the feed-out belt 23, and causes the first feed-out roller 80A and the feed-out belt 23 to feed out the preceding packaging material W1 from the first reel shaft LA. It is supplied to the bag making and packaging apparatus 20. As described above, the first frame member 42A is provided with the path roller R2, and the first holding member 50A is provided with the path roller R3, thereby guiding the preceding packaging material W1 to the first feeding roller 80A in a stable posture. be able to.

As the preceding packaging material W1 is fed out from the first reel axis LA, the diameter of the packaging material roll WR loaded onto the first reel axis LA decreases, as shown in step S2. During this time, at any time or at a specified time, the worker sets a new packaging material roll WR on the second reel shaft LB located at the standby position P2, and also sets the new packaging material roll WR on the second reel shaft LB located at the standby position P2. The tip S is set on the clamp mechanism 61 of the connection stand 60. In addition, when setting the trailing packaging material W2 on the connection base 60, for example, the connection base 60 is set on the reel shaft L side loaded with the packaging material roll WR of the trailing packaging material W2 (here, the second reel shaft LB side). ), the preceding packaging material W1 can be fed out without stopping. However, loading the new packaging material roll WR onto the reel shaft L and setting the trailing packaging material W2 onto the connection table 60 are performed by temporarily stopping the rotation of the rotating arm 40 in the state of step S5 shown in FIG. It may be done above.

If the state shown in FIG. 7 continues, as shown in step S3 in FIG. 8, the preceding packaging material W1 is used up and becomes separated from the first reel axis LA. As a result, the intensity of the reflected light from the reflecting plate 91 that the optical sensor 90 receives changes from the state in which the preceding packaging material W1 is present between the optical sensor 90 and the reflecting plate 91. As a result, the optical sensor 90 detects that the preceding packaging material W1 on the first reel axis LA has been used up, that is, that the terminal end E of the preceding packaging material W1 has passed between the optical sensor 90 and the reflecting plate 91. , the detection results are output to the control device 30. When the detection result is input, the control device 30 temporarily stops feeding out the preceding packaging material W1 by the first feeding roller 80A and the feeding belt 23. Then, the control device 30 connects the leading end portion S of the preceding packaging material W1 and the trailing packaging material W2 using the connector 70 (see FIG. 6). Note that, as described above, the optical sensor 90 may be replaced with another sensor such as an ultrasonic sensor.

Here, as described above, the feed-out roller 80 that feeds out the preceding packaging material W1 moves from the reel axis L of the preceding packaging material W1 (here, the first It is provided on the reel axis LA) side. Therefore, even after the preceding packaging material W1 is separated from the reel axis L, the tension of the preceding packaging material W1 from the feeding roller 80 to the connection position CP is maintained. This prevents the situation in which the leading packaging material W1 becomes unstable due to the loss of tension in the leading packaging material W1, which makes it impossible to connect the leading packaging material W1 and the trailing packaging material W2 at a desired position. Ru.

Next, as shown in step S4, the control device 30 drives and controls the swing arm drive device 200 to swing the swing arm 40 around the central axis 40a as shown by the solid arrow. As a result, the first reel shaft LA moves from the payout position P1 side to the standby position P2 side, and the second reel shaft LB moves from the standby position P2 side to the payout position P1 side. At this time, since the entire turning arm 40 turns, the first holding member 50A and the second holding member 50B also turn in the same direction. As the rotation of the rotation arm 40 further progresses, as shown in step S5 in FIG. 9, 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. Thereby, the posture of the trailing packaging material W2 can be stably maintained even while the pivot arm 40 is pivoting.

Then, as shown in step S6, the second reel shaft LB is positioned at the payout position P1, and the first reel shaft LA is positioned at the standby position P2. At this point, the control device 30 causes the servo motor of the swing arm drive device 200 to stop the swing arm 40, and fixes the swing arm 40 in the posture of step S6. As a result, the trailing packaging material W2 is sandwiched between the second feeding roller 80B attached to the second holding member 50B and the receiving roller 85, and becomes ready to be fed out by the second feeding roller 80B. In other words, the packaging material W of the packaging material roll WR loaded onto the second reel shaft LB becomes the preceding packaging material W1. The control device 30 drives and controls the feed roller drive device 100 and the feed belt 23 again, and the second feed roller 80B and the feed belt 23 feed the preceding packaging material W1 from the second reel shaft LB to the bag making and packaging device 20. and supply it. By repeatedly performing the processes from step S1 to step S6 above, the packaging material W from the packaging material roll WR loaded on the first reel shaft LA and the second reel shaft LB is sequentially supplied to the bag making and packaging apparatus 20. can do.

(Reel shaft installation structure)
Next, as a main part of the packaging material supply device 10 of the bag-forming-fill-sealing machine 1 according to the embodiment, a structure for attaching the reel shaft L to the rotating arm 40 will be described with reference to FIGS. 10 to 12. FIG. 10 is a perspective view showing a part of the packaging material supply device 10 viewed from the base end side of the reel shaft L. FIG. 11 is a perspective view showing a part of the packaging material supply device 10 as seen from the base end side of the reel shaft L in a state where the reel shaft L is open. Further, FIG. 12 is a perspective view showing a part of the packaging material supply device 10 as seen from the distal end side of the reel shaft L in a state where the reel shaft L is opened. As shown in FIGS. 10 to 12, in this embodiment, the reel shaft L is rotatably attached to the swing arm 40. In the following description, the state in which the reel axis L shown in FIG. 10 is parallel to the center axis 40a of the swing arm 40 will be referred to as the "state in which the reel shaft L is closed," and the state in which the reel shaft L shown in FIGS. 11 to 12 is closed. The state in which the reel shaft L is rotated from the open state is referred to as the "state in which the reel shaft L is opened."

As shown in FIG. 10, the reel shaft support member 41 includes a pair of support frames 410 attached to a side wall 40b on one axial side of the swing arm 40. The pair of support frames 410 are attached to the side wall 40b at intervals in the vertical direction, and extend horizontally from the side wall 40b. A loading rotation shaft Z extending in a direction perpendicular to the central axis 40a of the swing arm 40, that is, in the vertical direction, is rotatably attached to the end of the pair of support frames 410 opposite to the swing arm 40. There is. Note that an air-driven brake device 5 is provided on one side of the support frame 410 for applying braking force to the reel shaft L by pressing a disc D fixed to the reel shaft L. Other drive type brake devices, such as a type, may also be used.

Furthermore, a fixed block 412 is arranged between the pair of support frames 410 so as to be slidable with respect to the pair of support frames 410 . The fixed block 412 is attached so that the base end L1 of the reel shaft L can rotate around its own axis. Further, in the fixed block 412, the loading rotation shaft Z is inserted through an end portion of the fixed block 412 that is further away from the swing arm 40 than the base end L1 of the reel shaft L. Therefore, the fixed block 412 is attached to the pair of support frames 410 so as to be rotatable around the loading rotation axis Z extending along the vertical direction. The loading rotation axis Z is located on the opposite side of the central axis 40a of the rotation arm 40 across the reel axis L in the horizontal direction (here, a direction perpendicular to the central axis 40a of the rotation arm 40 and the loading rotation axis Z). I will do it. Thereby, the reel axis L can rotate around the loading rotation axis Z with respect to the pair of support frames 410, as shown by the arc-shaped white arrow in FIG. In other words, the loading rotation axis Z sets the angle between the reel axis L and the center axis 40a of the rotating arm 40 at a different angle ( In this embodiment, the rotation axis is 90 degrees (deg). Then, as shown in FIG. 11, by opening the reel shaft L with respect to the swing arm 40, the operator can easily load a new packaging material roll WR onto the reel shaft L.

Note that, as shown in FIGS. 10 and 11, the reel shaft L is provided with a plurality of protrusions LT protruding from the outer peripheral surface. The plurality of convex parts LT can further protrude radially from the outer peripheral surface of the reel shaft L by supplying air into the interior of the reel shaft L from the air supply path connected to the base end L1. As a result, the plurality of convex portions LT presses the inner circumferential surface of the packaging material roll WR loaded onto the reel shaft L, and the packaging material roll WR is stably fixed to the reel shaft L.

(Lock mechanism)
Next, an interlock mechanism that locks the rotation of the reel shaft L with respect to the swing arm 40 will be explained. As shown in FIGS. 10 to 12, the packaging material supply device 10 includes a lock mechanism 450 as the interlock mechanism. The lock mechanism 450 is provided corresponding to each reel axis L. That is, the lock mechanism 450 includes a first lock mechanism 450A corresponding to the first reel axis LA and a second lock mechanism 450B corresponding to the second reel axis LB. The first locking mechanism 450A and the second locking mechanism 450B have the same configuration except that they are arranged symmetrically with respect to the central axis 40a. Each lock mechanism 450 includes the frame member 42, a lock shaft 460, a handle 470, and a lock block 480 (see FIG. 12).

The frame member 42 has a fixed block 421 that is arranged vertically apart from the pair of support frames 410 and fixed to the loading rotation axis Z. Therefore, the frame member 42 is rotatable together with the reel shaft L as the loading rotation shaft Z rotates.

Further, a proximal frame 422 extending along a direction perpendicular to the reel axis L is connected to the fixed block 421, and the proximal frame 422 includes an inner frame 42i and an outer frame 42o extending along the reel axis L. are connected. The inner frame 42i and the outer frame 42o are spaced apart from each other. Further, a first distal frame 424 disposed opposite to the proximal frame 422 is connected to an end of the inner frame 42i on the opposite side from the proximal frame 422. The first distal frame 424 is connected to a midway portion of the outer frame 42o. Further, a second distal frame 425 is connected to an end of the outer frame 42o on the opposite side from the proximal frame 422. The second distal frame 425 is arranged to face a portion of the proximal frame 422 that protrudes beyond the outer frame 42o. The two path rollers R2 described above are rotatably attached between the proximal frame 422 and the second distal frame 425. Further, the above-mentioned reflecting plate 91 is attached to the base end frame 422 so as to be located between the two path rollers R2.

The lock shaft 460 extends between the inner frame 42i and the outer frame 42o in a direction perpendicular to the reel axis L, as shown in FIGS. 10 and 11. The lock shaft 460 is attached near the ends of the inner frame 42i and the outer frame 42o on the opposite side from the proximal frame 422. That is, as shown in FIG. 10, the lock shaft 460 is attached to the inner frame 42i and the outer frame 42o so that it is located near the side wall 40c on the other axial side of the swing arm 40 when the reel shaft L is closed. It will be done. The lock shaft 460 is supported by the inner frame 42i and the outer frame 42o so as to be rotatable around its own axis. Note that the outer frame 42o is provided with a lock shaft support member 426 that rotatably supports the lock shaft 460.

As shown in FIG. 12, the tip portion 460a of the lock shaft 460 protrudes from the inner end surface 421i of the inner frame 42i. Note that the inner end surface 421i of the inner frame 42i is the end surface of the inner frame 42i located on the swing arm 40 side when the reel shaft L is closed. A distal end portion 460a of the lock shaft 460 is capable of locking engagement with a lock block 480, which will be described later. "Lock engagement" here means that the tip portion 460a is rotated around the loading rotation axis Z so as to restrict the rotation of the frame member 42 to which the lock shaft 460 is attached or the reel shaft L around the loading rotation axis Z. This means that it is engaged with the lock block 480 so as not to be movable in the rotational direction. FIG. 13 is an explanatory diagram showing a state in which the lock shaft 460 and the lock block 480 are lockingly engaged. Note that in FIG. 13, only the portion of the swing arm 40 to which the lock block 480 is attached is shown, and the frame member 42 is not shown. As shown in the figure, a pair of guide members 427 are provided around the lock shaft 460, sandwiching the tip portion 460a above and below. A pair of guide members 427 are provided on the inner end surface 421i of the inner frame 42i (see FIG. 12). The pair of guide members 427 slide on the top and bottom surfaces of the lock block 480 and guide the tip 460a of the lock shaft 460 to the lock block 480.

The handle 470 is connected to the lock shaft 460 near the outer end surface 422i (see FIG. 11) of the inner frame 42i. Note that the outer end surface 422i of the inner frame 42i is the end surface of the inner frame 42i located on the opposite side of the swing arm 40 when the reel shaft L is closed. As shown in FIG. 13, the handle 470 includes a connecting member 471 connected to the lock shaft 460, and a gripping member 472 and an abutting member 473 extending from the connecting member 471 in the same direction as the lock shaft 460. The gripping member 472 is a portion by which the operator grips the handle 470 in order to rotate the lock shaft 460, and extends toward the side opposite to the inner frame 42i. The contact member 473 extends toward the opposite side from the grip member 472, and protrudes to a position straddling the inner frame 42i, as shown in FIG. The contact member 473 becomes a contact member that comes into contact with a push button B (see FIG. 16) of the mechanical valve V (described later) to push the mechanical valve V when the lock shaft 460 and the lock block 480 are locked. .

The lock block 480 is a rectangular parallelepiped member attached to the swing arm 40, as shown in FIGS. 12 and 13. The lock block 480 is provided at a position facing the tip 460a of the lock shaft 460 when the reel shaft L is closed. The lock block 480 is formed with an engagement groove 480a that can lock into the tip portion 460a when the lock shaft 460 rotates around its own axis.

(Lock engagement structure between lock shaft and lock block)
FIG. 14 is a sectional view showing the tip 460a of the lock shaft 460, and FIG. 15 is a front view showing the lock block 480. As shown in FIG. 14, the tip portion 460a of the lock shaft 460 has a pair of first surface portions 461 that extend in an arc shape while facing each other, and a pair of second surface portions 461 that extend while facing each other between the pair of first surface portions 461. It has a surface portion 462. In this embodiment, the pair of second surface portions 462 are formed in a straight line. Note that the pair of second surface portions 462 are not limited to a linear shape, but may be formed, for example, in an arc shape. That is, the tip portion 460a of the lock shaft 460 may be formed, for example, so that the pair of first surface portions 461 and the pair of second surface portions 462 are entirely elliptical.

On the other hand, as shown in FIG. 15, the engagement groove 480a of the lock block 480 has a circular first groove part 481 and a second groove part 482 formed continuously with the first groove part 481. The diameter D3 of the first groove portion 481 is formed to be slightly larger than the maximum distance D1 between the pair of first surface portions 461 of the tip portion 460a of the lock shaft 460. This allows the tip portion 460a to slide on the inner surface of the first groove portion 481 (see steps S20 and S30 in FIG. 16).

The second groove portion 482 extends in the axial direction from the first groove portion 481 toward the side wall 40c of the swing arm 40. In other words, the second groove part 482 extends from the first groove part 481 along a trajectory (see the solid line arrow in FIG. 16) along which the tip end 460a of the lock shaft 460 moves as the reel shaft L rotates with respect to the swing arm 40. Extends like a hole. The second groove portion 482 is formed to have a width D4 slightly wider than the distance D2 between the pair of second surface portions 462 of the tip portion 460a of the lock shaft 460. Thereby, the tip portion 460a with the pair of second surface portions 462 positioned above and below can slide on the inner surface of the second groove portion 482 (see steps S10 and S20 in FIG. 16). Note that the second groove portion 482 may be formed to have a width that allows the tip portion 460a with the pair of second surface portions 462 positioned above and below to be inserted therein. However, the second groove portion 482 is formed to have a width D4 narrower than the maximum distance D1 between the pair of first surface portions 461 of the tip portion 460a of the lock shaft 460.

(Lock engagement operation between lock shaft and lock block)
FIG. 16 is an explanatory diagram showing a process in which the distal end portion 460a of the lock shaft 460 is engaged with the engagement groove 480a of the lock block 480. When the frame member 42 approaches the swing arm 40 as the reel shaft L rotates, the tip 460a of the lock shaft 460 approaches the engagement groove 480a from the side closer to the side wall 40c of the swing arm 40 (the left side in FIG. 16). Then, the pair of second surface portions 462 are inserted into the second groove portion 482 with the pair of second surface portions 462 positioned vertically (step S10). At this time, as described above, the pair of guide members 427 slide while sandwiching the lock block 480 vertically, and guide the tip portion 460a of the lock shaft 460 with respect to the lock block 480. When the frame member 42 further approaches the swing arm 40 and the reel shaft L is closed, the tip portion 460a slides on the inner surface of the second groove 482 and moves toward the side wall 40b of the swing arm 40 (see FIG. 16). right side) and inserted into the first groove portion 481 (step S20).

In this state, when the operator operates the handle 470 to rotate the lock shaft 460 around its own axis, the pair of first surfaces 461 of the tip portion 460a slide on the inner surface of the first groove portion 481, and The first surface portion 461 of is placed vertically (step S30). As a result, the movement of the tip portion 460a toward the second groove portion 482, which is formed to have a width D4 narrower than the maximum distance D1 between the pair of first surface portions 461, is restricted. As a result, as shown in FIG. 13, the lock shaft 460 is locked into the engagement groove 480a, the frame member 42 becomes immovable relative to the swing arm 40, and the reel shaft L is connected to the swing arm 40 in a closed state. locked. Note that when releasing the lock to open the reel shaft L, the operations from step S10 to step S30 may be performed in the reverse order.

(Lock mechanism operating state detection device)
Next, the operating state detection device 490 of the lock mechanism 450 will be explained. FIG. 17 is a schematic configuration diagram showing the main parts of the operating state detection device 490 of the lock mechanism 450. The packaging material supply device 10 of this embodiment includes, as an operating state detection device 490, the control device 30, a plurality of air paths AL, a rotary joint 492, a plurality of pressure detection sensors 494, and a plurality of air supply valves 496. and a plurality of mechanical valves V.

The plurality of air paths AL are connected to various air-driven devices mounted on the packaging material supply device 10, such as the brake device 5, for example, and are paths for supplying driving air to the various devices. The air path AL also includes a path for supplying air to various devices for detecting the operating states of various interlock mechanisms. Each air path AL is connected to an air supply source (not shown) via each air supply valve 496 which is a solenoid valve, and the control device 30 drives each air supply valve 496 at a predetermined timing to Start and stop of air supply to route AL is controlled. In this embodiment, among the plurality of air paths AL, the first air path ALA provided corresponding to the first lock mechanism 450A and the second air path ALB provided corresponding to the second lock mechanism 450B are It is included in the operating state detection device 490.

The rotary joint 492 is a rotary shaft joint that forms part of a plurality of air paths AL therein for supplying fluid such as air to the various rotating devices described above. Although not shown in FIGS. 1 to 13, the rotary joint 492 is attached to the center shaft 40a of the swing arm 40.

The plurality of pressure detection sensors 494 include a first pressure detection sensor 494A provided corresponding to the first lock mechanism 450A, and a second pressure detection sensor 494B provided corresponding to the second lock mechanism 450B. Each pressure detection sensor 494 is attached to a location that is not a location that rotates together with the swing arm 40. The first pressure detection sensor 494A is connected to the first air path ALA and detects the pressure within the first air path ALA. The second pressure detection sensor 494B is connected to the second air path ALB and detects the pressure within the second air path ALB. The first pressure detection sensor 494A and the second pressure detection sensor 494B output detection results to the control device 30.

The mechanical valve V is a push-type valve that switches the connected path between an exhaust state and a non-exhaust state by changing the position of the internal spool depending on whether the push button B is pressed or not. This is an air pressure input on/off valve. In this embodiment, the mechanical valve V is a normally open type on-off valve. The mechanical valve V includes a first mechanical valve VA provided corresponding to the first lock mechanism 450A, and a second mechanical valve VB provided corresponding to the second lock mechanism 450B. The first mechanical valve VA is connected to the first air path ALA, and when the push button B is not pressed, the first air path ALA is in an exhaust state, and when the push button B is pressed, the first air path ALA is connected to the first air path ALA. Bring ALA to non-exhaust state. Further, the second mechanical valve VB is connected to the second air path ALB, and when the push button B is not pressed, the second air path ALB is in an exhaust state, and when the push button B is pressed, the second mechanical valve VB is connected to the second air path ALB. The air path ALB is brought into a non-exhaust state.

The mechanical valve V is attached to the swing arm 40 near the lock block 480, as shown in FIG. More specifically, the mechanical valve V is arranged so that the push button B is located on the rotational trajectory of the abutting member 473 when the handle 470 of the locking mechanism 450 rotates. As a result, when the lock shaft 460 rotates and the tip 460a locks into the lock block 480 (the engagement groove 480a, the first groove 481), the contact member 473 rotates and comes into contact with the push button B. Push button B is pressed (step S30 in FIG. 16). On the other hand, when the tip 460a of the lock shaft 460 is not in locking engagement with the lock block 480 (the engagement groove 480a, the first groove 481), the contact member 473 and the push button B of the mechanical valve V are in contact with each other. The user does not press the push button B (steps S10 and S20 in FIG. 16). Therefore, when the reel shaft L is locked to the swing arm 40, the mechanical valve V puts the connected first air path ALA or second air path ALB into a non-exhaust state. On the other hand, when the reel shaft L is not locked to the swing arm 40, the mechanical valve V puts the connected first air path ALA or second air path ALB into an exhaust state.

With the above configuration, when the locking mechanism 450 changes the reel shaft L from an unlocked state to a locked state to the swing arm 40, the air path AL (first air path ALA or second air path ALA) detected by the pressure detection sensor 494 The pressure in the air path ALB) increases. Therefore, based on the input from the pressure detection sensor 494, the control device 30 locks the reel shaft L to the rotation arm 40 by the locking mechanism 450 when the pressure in the air path AL is less than a predetermined value. If the pressure in the air path AL is equal to or higher than a predetermined value, it is determined that the reel shaft L is locked to the swing arm 40 by the locking mechanism 450. The predetermined value is a value that is preset as the pressure value of the air path AL according to the operation of the lock mechanism 450. Note that the control device 30 determines whether the reel shaft L is locked to the swing arm 40 or not based on the amount of pressure fluctuation detected by the pressure detection sensor 494. Good too.

Furthermore, as described above, the air path AL is connected to an air supply source (not shown) via the air supply valve 496. This makes it possible to avoid unnecessary air supply. As an example, after the reel shaft L is locked with respect to the rotating arm 40, an operator closes a safety cover (not shown) provided on the packaging material supply device 10. The control device 30 detects with a sensor (not shown) that the safety cover is closed, and controls the air supply valve 496 to supply the air to the corresponding air path AL (first air path ALA or second air path ALB, not shown). Start supplying air from the air supply source. Thereby, the pressure detection sensor 494 detects that the pressure in the air path AL is equal to or higher than a predetermined value, and the control device 30 determines that the reel shaft L is locked to the swing arm 40 by the lock mechanism 450. It becomes possible to judge. When the control device 30 determines that the reel shaft L is locked to the swing arm 40, it controls the air supply valve 496 to stop the supply of air into the air path AL. Note that, for example, a button is provided on the operation panel included in the setting input device 2 to instruct the operator to replace the packaging material W, and in response to an instruction input by the operator via the button, , the control device 30 may control the supply of air to the air path AL.

(Effects of embodiment)
As described above, the packaging material supply device 10 according to the embodiment includes a plurality of reel shafts L into which packaging materials W are loaded, a feeding position P1 where the packaging materials W are fed out and used, and a feeding position P1 where the packaging materials W are fed out and used. A swing arm 40 that swings a plurality of reel shafts L between a standby position P2 before use, and a swing arm 40 that swings a plurality of reel shafts L between a standby position P2 and a standby position P2 before use, and the plurality of reel shafts L have an angle between the center axis 40a of the swing arm 40 and a center axis 40a of the swing arm 40 when supplying packaging material. It is attached to the swing arm 40 so as to be rotatable around a loading rotation axis Z that has different angles when loading the packaging material and when loading the packaging material.

With this configuration, in order to rotate the plurality of reel shafts L between the feeding position P1 and the standby position P2 using the rotating arm 40, an operator can load the packaging material W (i.e., a new packaging material roll WR). A convenient standby position P2 can be determined in advance. In addition, since the reel axis L is rotatable around the loading rotation axis Z that makes the angle between the reel axis L and the central axis 40a of the swing arm 40 different between when supplying packaging material and when loading packaging material, the reel axis L By rotating the rotating arm 40 at a predetermined angle for the operator, loading the packaging material W can be easily carried out. Therefore, according to the packaging material supply device 10, by making it easier to load the packaging materials W onto the plurality of reel shafts L, it is possible to shorten the working time and improve operational efficiency. .

Further, the loading rotation axis Z is located on the opposite side of the central axis 40a of the rotating arm 40 with the reel axis L interposed therebetween. With this configuration, when the reel axis L is moved to the packaging material loading position, the members rotating together with the reel axis L (for example, the frame The range in which the member 42 and the disk D) extend from the loading rotation axis Z in the direction along the central axis 40a of the swing arm 40 (see the straight white arrow in FIG. 11) becomes smaller.

For example, assume that the loading rotation axis Z' is located at the position indicated by the broken line in FIG. In this case, the range A1 located on the opposite side of the central axis 40a of the swing arm 40 with respect to the loading rotation axis Z' becomes the above-mentioned "projecting range". On the other hand, in this embodiment, the range A2 located on the opposite side of the central axis 40a of the swing arm 40 with respect to the loading rotation axis Z is the above-mentioned "projecting range". In this way, according to the configuration of this embodiment, the range A2, which is shorter than the range A1, becomes the above-mentioned "projecting range". Therefore, the installation space for the packaging material supply device 10 can be reduced.

In addition, in the configuration of this embodiment, compared to the case where the loading rotation axis Z is closer to the center axis 40a of the swing arm 40 than the reel axis L, when the reel axis L is opened, the loading rotation axis Z is The rotating member will protrude toward the opposite side of the central axis 40a. However, since this direction is the direction in which a new packaging material W is inserted into and removed from the reel shaft L, it can be said that this direction is a direction in which a working space is secured in advance.

The packaging material supply device 10 further includes a plurality of locking mechanisms 450 that are provided correspondingly to the plurality of reel shafts L and lock the rotation of the reel shaft L with respect to the rotation arm 40. A frame member 42 that is rotatable around the rotation axis together with the axis L, a lock shaft 460 that is rotatably attached to the frame member 42 around its own axis, and a handle 470 that rotates the lock shaft 460 around its own axis; It is provided on the swing arm 40 at a position facing the tip 460a of the lock shaft 460, and when the lock shaft 460 rotates around its own axis, the reel shaft L and the frame member 42 cannot rotate around the loading rotation axis Z. As shown in FIG.

With this configuration, when the reel axis L rotates around the loading rotation axis Z with respect to the swing arm 40, the lock shaft 460 also rotates around the loading rotation axis Z in the same direction together with the frame member 42. Therefore, simply by moving the reel shaft L, the lock shaft 460 attached to the frame member 42 can be easily moved relative to the lock block 480 provided on the swing arm 40. In addition, the operator rotates the reel shaft L around the loading rotation axis Z so that it is in the position when loading the packaging material (FIG. 11), and then replaces the packaging material W on the reel shaft L with a new one. The reel shaft L is again rotated around the loading rotation shaft Z and set to the position at the time of packaging material supply (FIG. 10). When the operator rotates the lock shaft 460 with the handle 470, the tip 460a of the lock shaft 460 is locked into the lock block 480, so that the reel shaft L rotates with respect to the swing arm 40 during packaging material supply. can be locked easily.

Further, in the lock block 480, the distal end portion 460a of the lock shaft 460 has a pair of first surface portions 461 extending in an arc shape while facing each other, and a pair of second surface portions 461 extending while facing each other between the pair of first surface portions 461. The first groove 480a includes a first groove 481 having a circular shape and a second groove 482 extending in a long hole shape from the first groove 481. The second groove portion 482 is formed to be slidable on the surface portion 461, and has a width D4 that is narrower than the maximum distance D1 between the pair of first surface portions 461 and wider than the distance D2 between the pair of second surface portions 462. be done.

With this configuration, the tip 460a of the lock shaft 460 and the lock block 480 can be easily shifted in the rotational direction around the loading rotation axis Z without providing a complicated mechanism to the tip 460a of the lock shaft 460 or the lock block 480. Instead, it can be lockingly engaged.

Further, the frame member 42 is provided with a guide member 427 that guides the tip end 460a of the lock shaft 460 with respect to the engagement groove 480a of the lock block 480. With this configuration, the lock shaft 460 can be easily inserted into and removed from the engagement groove 480a of the lock block 480.

The packaging material supply device 10 also includes an air path AL through which air flows, a rotary joint 492 that is attached to the central axis 40a of the swing arm 40 and forms a part of the air path AL, and a rotary joint 492 that controls the pressure in the air path AL. A pressure detection sensor 494 for detecting pressure, a mechanical valve V that switches the air path AL between an exhaust state and a non-exhaust state depending on whether the push button B is pressed or not, and which is attached to the lock shaft 460. The mechanical valve V rotates together with the lock shaft 460, and when the tip 460a is not locked into the lock block 480, the push button B of the mechanical valve V is not pressed, and when the tip 460a is engaged with the lock block 480, the mechanical valve V Based on the pressure in the air path AL detected by the contact member 473 that presses the push button B of and a control device 30 that makes the determination.

With this configuration, it is possible to detect whether or not the rotation of the reel shaft L with respect to the swing arm 40 is locked by changing the pressure in the air path AL without placing an electric sensor at the part of the swing arm 40 that rotates about the central axis 40a. can be detected based on Therefore, it is possible to suppress an increase in electrical wiring around the swing arm 40.

Further, the contact member 473 is provided on the handle 470. With this configuration, there is no need to separately provide the abutment member 473 that needs to rotate together with the lock shaft 460, so an increase in the number of parts can be suppressed.

(Modified example)
This concludes the description of the embodiment, but aspects of the present invention are not limited to this embodiment. For example, in the present embodiment, the plurality of reel axes L include the first reel axis LA and the second reel axis LB, but the number of reel axes L is not limited to two, but may be three or more. Good too.

Furthermore, in the present embodiment, the loading rotation axis Z is located on the opposite side of the central axis 40a of the swing arm 40 with the reel axis L interposed therebetween. 40 may be provided on the central axis 40a side.

The interlock mechanism for locking the rotation of the reel axis L around the loading rotation axis Z with respect to the swing arm 40 is not limited to the lock mechanism 450 of the embodiment, but may be any mechanism. For example, the interlock mechanism may be a mechanism that does not rotate with respect to the swing arm 40 together with the reel shaft L, but is provided on the swing arm 40 and fixes the reel shaft L in the closed state to the swing arm 40. good.

Further, the lock engagement structure between the tip end 460a of the lock shaft 460 and the lock block 480 is not limited to the structure described in the embodiment, but may be any structure as long as it is capable of locking engagement with each other and releasing the lock engagement. It may be a structure. Further, the guide member 427 may be omitted from the lock mechanism 450.

Further, in this embodiment, the normally open type mechanical valve V is used to switch the air path AL between the exhaust state and the non-exhaust state, but the mechanical valve V may be a normally closed type. That is, when the reel shaft L changes from being unlocked to the swing arm 40 to being locked by the locking mechanism 450, the corresponding air path AL (first air path ALA or second air path ALB) is opened by the mechanical valve V. The state may change from a non-exhaust state to an exhaust state. In that case, since the pressure in the air path AL detected by the pressure detection sensor 494 decreases, the control device 30 causes the reel shaft L to rotate based on the fact that the pressure in the air path AL is less than a predetermined value. It is only necessary to determine that the arm 40 is locked.

Furthermore, whether or not the rotation of the reel shaft L about the loading rotation axis Z with respect to the swing arm 40 is locked may be detected using an electrical sensor instead of the mechanical valve V.

Further, the contact member 473 may be attached to the lock shaft 460 separately from the handle 470.

1 Bag-making-fill-sealing machine 10 Packaging material supply device 20 Bag-making and packaging device 30 Control device 40 Swivel arm 40a Center shaft 41 Reel shaft support member 42 Frame member 50 Holding member 60 Connection stand 70 Connector 80 Feeding roller 85 Receiving roller 427 Guide Member 450 Lock mechanism 460 Lock shaft 460a Tip 461 Pair of first surfaces 462 Pair of second surfaces 470 Handle 473 Contact member 480 Lock block 480a Engagement groove 481 First groove 482 Second groove 490 Operating state detection device 492 Rotary Joint 494 Pressure detection sensor AL Air path B Push button L Reel shaft P1 Feeding position P2 Standby position V Mechanical valve W Packaging material WR Packaging material roll Z Loading rotation shaft

Claims (7)

a plurality of reel shafts into which packaging materials are loaded;
a rotating arm that rotates the plurality of reel shafts between a feeding position where the packaging material is fed out and used, and a standby position before the packaging material is fed out and used;
The plurality of reel shafts are attached to the rotating arm so as to be rotatable around a loading rotation axis that makes the angle between the plurality of reel shafts and the central axis of the rotating arm different when supplying the packaging material and when loading the packaging material. Attached packaging material supply device. The packaging material supply device according to claim 1, wherein the loading rotation shaft is located on the opposite side of the central axis of the swing arm with the reel shaft in between. further comprising a plurality of locking mechanisms provided corresponding to each of the plurality of reel shafts and locking the rotation of the reel shaft about the loading rotation axis with respect to the rotation arm,
The locking mechanism is
a frame member rotatable around the loading rotation axis together with the reel axis;
a lock shaft rotatably attached to the frame member around its own axis;
a handle that rotates the lock shaft around its own axis;
provided on the swing arm to face the tip of the lock shaft so that when the lock shaft rotates around its own axis, the reel shaft and the frame member cannot rotate around the loading rotation axis; The packaging material supply device according to claim 1, further comprising a lock block that can be lockingly engaged with the tip. The distal end portion of the lock shaft has a pair of first surface portions that extend in an arc shape while facing each other, and a pair of second surface portions that extend between the pair of first surface portions while facing each other,
The lock block includes an engagement groove having a circular first groove and a second groove extending in a long hole shape from the first groove,
The first groove portion is formed to be slidable on the pair of first surface portions,
The packaging material supply device according to claim 3, wherein the second groove is formed to have a width narrower than a distance between the pair of first surface portions and wider than a maximum distance between the pair of second surface portions. The packaging material supply device according to claim 4, wherein the frame member is provided with a guide member that guides the tip end of the lock shaft with respect to the engagement groove of the lock block. An air path through which air flows,
a rotary joint attached to the central axis of the swing arm and forming a part of the air path;
a pressure detection sensor that detects the pressure within the air path;
a mechanical valve that switches the air path between an exhaust state and a non-exhaust state depending on whether a push button is pressed or not;
The mechanical valve is attached to the lock shaft and rotates together with the lock shaft, and when the tip is not in locking engagement with the lock block, the push button of the mechanical valve is not pressed, and the tip is locked to the lock block. an abutment member that presses the push button of the mechanical valve when engaged;
4. The reel shaft according to claim 3, further comprising: a control device that determines whether or not rotation of the reel shaft with respect to the swing arm by the lock mechanism is locked based on the pressure in the air path detected by the pressure detection sensor. The described packaging material supply device. The packaging material supply device according to claim 6, wherein the abutting member is provided on the handle.

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