Original roll fitting device

Abstract

To provide an original roll fitting device where an original roll is supported and transported stably and is pushed out smoothly with a little force and attached to the film supply device.CONSTITUTION: A dolly 11 is provided with a support shaft 33 that supports the original roll, and a plurality of rollers 37 that can rotate in a horizontal plane are provided on the left and right sides of the support shaft. A plurality of disks 39 are fixedly installed in a longitudinal direction on the upper surface of the support shaft, and the disks discretely contact the inner circumferential surface of a paper tube 9a of the original roll. The roller-arranged disks make point contact with the inner circumferential surface of the paper tube, and the contact resistance is small, so that the original roll is pushed out by a small biasing force of a pusher plate member 41. Since the disks provided on the upper surface are fixedly installed and do not rotate, the contact resistance when the original roll tries to move in the axial direction is small, but has a certain magnitude and is larger than the biasing force generated on the original roll when the dolly moves. Even if the original roll tries to move in the axial direction when the dolly moves, the contact parts suppress the movement, and the original roll is prevented from falling.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a web roll mounting device. [Background technology]

[0002] The packaging machine is equipped with a film supplying device that continuously supplies a strip-shaped packaging film wound around a raw roll to the packaging machine body. This film supplying device has one or more rotating support shafts that rotatably support the raw roll. The rotating support shaft is attached in a cantilevered manner to a mounting plate located at the rear side of the film supplying device so as to be rotatable about its axis. The mounting plate may be fixed so that the position of the rotating support shaft does not change, or may be composed of a rotating disk such as the revolver type disclosed in Patent Document 1. In either case, the raw roll is set from the tip side of the cantilevered rotating support shaft.

[0003] The original roll is constructed by winding a strip of film around a cylindrical paper tube with both ends open. When the original roll is set on the rotating support shaft, an operator usually transports the original roll to the vicinity of the film supply device using a dolly or the like, lifts the original roll by hand, aligns one opening of the paper tube with the tip of the rotating support shaft, and pushes the original roll to the back. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2023-36479 A Summary of the Invention [Problem to be solved by the invention]

[0005] Since the raw roll is heavy, it is cumbersome to manually lift it up to the installation position of the rotary support shaft and then push it horizontally onto the rotary support shaft while it is lifted up. Therefore, there is a need to automate part or all of the installation process using a device.

[0006] Furthermore, when implementing such automation, if the device configuration becomes complicated, the control becomes complicated and the device becomes large, which is not preferable. Therefore, there is also a problem of wanting to realize the automation with a simple configuration.

[0007] The above-mentioned problems are described as being independent of each other, and the present invention does not necessarily have to solve all of the problems described, but it is sufficient if it can solve at least one of the problems. In addition, we intend to obtain rights to the configuration for solving this problem separately through divisional applications, amendments, etc. [Means for solving the problem]

[0008] [Background to the invention] In automating this process, the inventors came up with the idea of ​​transporting a cart equipped with a support shaft for temporarily holding the original fabric roll in a horizontal position by a self-propelled transport device such as an AGV (AUTOMATIC GUIDED VEHICLE) to the vicinity of a packaging machine (film supply device), arranging the support shaft on the cart to face the rotating support shaft of the film supply device of the packaging machine, and transferring the original fabric roll supported by the support shaft to the rotating support shaft.

[0009] When transferring the original roll, if the original roll supported by the support shaft is pushed forward from the rear side in the axial direction by being urged, it was found that if the support shaft is cylindrical, the contact resistance between the support shaft and the paper tube of the original roll is large and the transfer cannot be performed smoothly. Therefore, the problem of wanting to push out the original roll supported by the support shaft with a small force was discovered.

[0010] On the other hand, if the contact resistance between the support shaft and the original roll is reduced, it works favorably when transferring the original roll to the rotating support shaft, but there is a risk that the original roll will fall off the support shaft while the cart is moving. In particular, when the cart is automatically transported and the worker does not move with the cart, it may not be possible to detect the signs of falling. Therefore, it was found that there is another problem to simultaneously solve the conflicting problems of being able to push the original roll off the support shaft with a small force as described above and preventing the original roll from falling off the support shaft unnecessarily. The inventor has invented the following solutions based on these problems and new problems that arise accompanying them, through ingenuity.

[0011] In order to solve the above-mentioned problems, the raw roll loading device in the packaging machine of the present invention (1) comprises a cart with a support shaft that detachably supports a raw roll on which packaging film is wound, the raw roll has a hole that penetrates in the axial direction, and the raw roll is supported by inserting the support shaft into the hole, and the support shaft has a plurality of rollers on the left and right sides of the main body that are capable of rotating in a horizontal plane, and the upper surface side of the main body has a plurality of contact areas that contact the inner surface of the hole of the raw roll, discretely arranged along the longitudinal direction of the main body, and a suppression section that suppresses the raw roll from coming off the front of the support shaft due to a spring force applied to the raw roll when the cart is transporting.

[0012] In this way, the contact resistance between the inner circumferential surface of the hole of the original roll and the support shaft is reduced. Therefore, the original roll can be pushed out from the support shaft even with a small force. Therefore, the original roll can be transferred to the rotating support shaft by pushing the original roll out while the support shaft is facing the rotating support shaft to which the original roll is to be attached. In addition, since the suppressing part is provided, the original roll can be prevented from falling off the support shaft while the dolly is moving, and the original roll can be reliably transported to a place where the original roll is to be attached, such as a packaging machine. In the embodiment, the hole of the original roll is formed by a cardboard tube 9a. In the embodiment, the means for moving the original roll supported by the support shaft forward along the support shaft is pushed out by a pusher plate member 41 provided in the original roll attachment device, but is not limited to this, and may be performed by a robot device provided outside the original roll attachment device, or various other configurations may be adopted.

[0013] (2) The device includes a pusher member that moves back and forth along the support shaft, contacts the axial rear surface of the original fabric roll supported by the support shaft, and urges it forward, and a drive unit that moves the pusher member back and forth, wherein the contact resistance of the contact portion is smaller than the urging force by the pusher member and larger than the urging force applied to the original fabric roll when the cart is transporting, and the contact portion constitutes the suppression portion.

[0014] In this way, since the contact portion is disposed on the upper surface side of the support shaft, the upper portion of the inner peripheral surface of the hole of the original fabric roll is in contact with the contact portion and supported. The resistance to the axial movement of the original fabric roll is affected by the contact portion, so the axial movement is permitted by the biasing force of the pusher member. On the other hand, since the contact resistance of the contact portion is greater than the biasing force applied to the original fabric roll generated when the carriage moves, even if the original fabric roll tries to move in the axial direction when the carriage moves, the contact portion prevents the movement.

[0015] (3) The contact portion may be configured to have a plurality of disks arranged in the longitudinal direction and fixed in place, which, with a simple configuration, can suppress the movement of the original roll when the cart moves, preventing it from falling off the support shaft, and allows the transfer to be performed with a relatively small force.

[0016] (4) Preferably, part of the contact portion is a roller that rotates in a vertical plane, which can suppress movement of the original roll relative to the support shaft when the cart is moving, and can further reduce resistance when the original roll is transferred, thereby guiding the movement of the original roll smoothly.

[0017] (5) The contact area is preferably a peripheral surface of a rotating body that rotates on its axis within a vertical plane, and the rotating body is preferably configured to rotate less easily than the rollers. By making the rotating body rotate less easily than the rollers, it is possible to suppress movement of the original fabric roll relative to the support shaft when the dolly is moved while reducing contact resistance compared to that of a fixedly installed roll, thereby further reducing resistance when the original fabric roll is transferred and guiding smooth movement of the original fabric roll.

[0018] (6) The support shaft is positioned at a low position that allows feeding relative to a rotating support shaft that supports the original roll of a film supplying device of the packaging machine, and the loading side of the rotating support shaft has a tapered surface that narrows toward the tip, and the diameter of the contact area on a vertical plane perpendicular to the longitudinal direction of the support shaft and the circumscribed circle that circumscribes the left and right rollers is smaller than the inner diameter of the hole.

[0019] In this way, the outer diameter of the support shaft is smaller than the inner diameter of the hole of the original roll, so that the original roll is allowed to move in a direction perpendicular to the axial direction relative to the support shaft. Since the support shaft is located lower than the rotating support shaft, the original roll can be transferred to the rotating support shaft even if it is in a raised position relative to the support shaft. For example, when the rotating support shaft is a revolver type that moves in position as disclosed in Patent Document 1, etc., there is a positioning error due to processing accuracy and assembly accuracy, and the relative positional relationship between the support shaft and the rotating support shaft may be shifted. If the support shaft is located higher than the rotating support shaft as a result of the position shift, the original roll cannot be lowered and cannot be attached to the rotating support shaft, but the present invention can prevent such a situation from occurring as much as possible.

[0020] (7) The cart does not have a self-propelled function, and is configured so that the cart is connected to a self-propelled transport device and transported to the front side of a film supply device to which the original roll is attached, and the suppression section is configured to take a first position that suppresses the detachment of the original roll and a second position that allows the detachment, and to take the first position when the transport device is connected to the cart and the second position when the connection is released.

[0021] In this manner, when the trolley is moved, the restraint section takes on a first position and prevents the original roll from coming off the support shaft, and when the trolley stops in front of the packaging machine and the conveying device releases the connection of the trolley, the restraint section takes on a second position and moves the original roll along the support shaft, making it possible to transfer and supply it to the packaging machine side.

[0022] In addition, the configurations shown in (1) to (7) above can be configured in appropriate combinations, and based on such combined configurations, it is preferable to combine the components described in the embodiments and drawings. Effect of the Invention

[0023] According to the present invention, the raw material roll can be transported stably, and can be pushed out with a small force, so that it can be attached to, for example, a film supplying device of a packaging machine. [Brief description of the drawings]

[0024] [Figure 1] 1 is a diagram showing a preferred embodiment of a raw material roll mounting device according to the present invention, and an inverted pillow packaging machine to which the raw material roll is mounted. [Diagram 2] This is a perspective view. [Diagram 3] FIG. 2 is a perspective view showing a carriage in a preferred embodiment of the raw material roll mounting device. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] This is a left side view of the bogie (front side of the bogie). [Figure 7] FIG. [Figure 8] FIG. 2 is an enlarged perspective view of a portion of the carriage. [Figure 9] FIG. 2 is an enlarged plan view showing a part of the carriage. [Figure 10] FIG. 2 is an enlarged left side view of a portion of the carriage. [Figure 11] 1 is a diagram showing the relationship between a support shaft 33 and a raw material roll 9 and a paper tube 9a. [Figure 12] FIG. 2 is an enlarged front view of a portion of the carriage. [Figure 13] This is an enlarged perspective view (part 1) showing a part of the carriage. [Figure 14] This is an enlarged perspective view (part 2) showing a part of the cart. [Figure 15] FIG. 1 is a perspective view mainly showing a preferred embodiment of a raw material roll mounting device. [Figure 16] FIG. [Figure 17] FIG. 1 is a perspective view (part 1) showing a positioning device in a preferred embodiment of the original roll mounting device. [Figure 18] FIG. 2 is a perspective view (part 2) showing the positioning device. [Figure 19] FIG. [Figure 20] FIG. 3 is a perspective view showing the positioning device. [Figure 21] FIG. [Figure 22] 5A to 5C are diagrams illustrating the operation of the raw material roll mounting device. [Figure 23] FIG. 1 is a perspective view showing the positioning device in a pulled state. [Figure 24] FIG. 2 is a perspective view (part 2) showing the positioning device in a pulled state. [Diagram 25] FIG. 2 is a plan view showing the positioning device in a pulled state. [Figure 26] 13 is a perspective view showing the original roll mounting device in a state where the positioning device has pulled the carriage toward the original roll mounting device. FIG. [Figure 27] FIG. [Figure 28] FIG. 2 is an enlarged perspective view showing a support shaft and its periphery. [Figure 29] This is a front view. [Diagram 30] FIG. [Diagram 31] FIG. [Diagram 32] FIG. [Diagram 33] This is a perspective view. [Diagram 34] FIG. 13 is a diagram showing an example of a mechanism for preventing the original roll from coming off; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to these embodiments, and various changes, modifications, and improvements can be made based on the knowledge of those skilled in the art without departing from the scope of the present invention.

[0026] 1 and 2 show a raw material roll attachment device 10 according to a preferred embodiment of the present invention, and a part of an inverted pillow packaging machine 1, which is an example of a packaging machine to which a raw material roll is attached by the raw material roll attachment device 10. The inverted pillow packaging machine 1 includes a packaging machine main body 2, a packaged item conveying device 3 arranged upstream of the packaging machine main body 2, and a film supplying device 4 arranged below the packaged item conveying device 3. In the figure, a bag former 5 arranged on the carry-in side of the packaging machine main body 2 is shown, and the parts after the bag former 5 are not shown. The film supplying device 4 continuously pays out a strip-shaped packaging film 6 wound around a raw material roll 9, and supplies it to the bag former 5 from below.

[0027] The packaged item transport device 3 is made up of a specified conveyor device, which transports the packaged items (not shown) at specified intervals and sequentially supplies them to the bag former 5. As a result, the packaged items are positioned at equal intervals within the packaging film 6 that is made into a cylindrical bag by the bag former 5, and proceed inside the packaging machine main body 2 together with the packaging film 6.

[0028] The film supply device 4 used in this embodiment can be, for example, a film supply device disclosed in Patent Document 1 (JP Patent Publication No. 2023-36479). That is, although detailed configuration description is omitted, a rotating support shaft 7 on which the original roll 9 is mounted is attached to the disk 8. The outer diameter of the rotating support shaft 7 is approximately equal to or slightly larger than the inner diameter of the paper tube 9a of the original roll 9. The rotating support shaft 7 is equipped with a holding mechanism such as an air chuck, and holds the mounted original roll 9. Two rotating support shafts 7 are prepared and are arranged on the opposite side of a predetermined radial direction of the front surface of the disk 8, that is, at a position equidistant from the center of the disk 8. Then, each rotating support shaft 7 is attached rotatably around the axis via a bearing portion. The disk 8 rotates in a vertical plane with the central position as the center of rotation, and the rotating support shaft 7 also rotates and moves in the circumferential direction of the disk 8 along with the rotation.

[0029] One of the two rotating support shafts 7 (on the right side in FIG. 1) supports a raw web roll 9 that supplies packaging film 6 to the packaging machine main body 2, and the other supports a spare raw web roll 9. When the remaining amount of one of the raw web rolls 9 currently being supplied becomes low, the leading end of the packaging film of the other raw web roll that was waiting as a spare is connected to the end portion of the packaging film being supplied at an appropriate timing, so that the packaging film is continuously supplied from the spare raw web roll to the packaging machine main body. When the spare packaging film is connected and supplied to the packaging machine main body 2, the disk 8 rotates, and the rotating support shaft 7 on which the raw web roll 9 on which the spare packaging film was wound is mounted is controlled to move to the position where the rotating support shaft 7 on which the raw web roll 9 that had been supplying packaging film to the packaging machine main body 2 was mounted was located. This makes it possible to make the positional relationship between the raw web roll 9 currently supplying packaging film to the packaging machine main body and the raw web roll 9 waiting as a spare the same, so that the mechanism and process for connecting the spare packaging film can be made the same.

[0030] Although not shown in the figure, the film supply device 4 has a transport path for the strip-shaped packaging film 6 unwound from the original roll 9 between the film supply device 4 and the bag maker 5, and is also equipped with feed rollers for pulling out the packaging film 6 along the transport path.

[0031] The raw roll loading device 10 of this embodiment includes a trolley 11 that transports the raw roll 9, a positioning device 13 that pulls the trolley 11, which has been moved to a predetermined position in front of the film supply device 4 by a transport device 12 that moves the trolley 11, and positions it at the predetermined position, and a collaborative robot 90.

[0032] The transport device 12 has a self-propelling function, and may be, for example, an AGV (AUTOMATIC GUIDED VEHICLE) or an AMR (AUTONOMOUS MOBILE ROBOT). In this embodiment, an AGV is used. The transport device 12 has a coupling mechanism that couples and holds the cart 11 and releases and releases it, and when the cart 11 is held, the cart 11 moves together with the transport device 12 as it transports.

[0033] As shown enlarged in FIG. 3 and subsequent figures, the dolly 11 includes a loading platform 15 and a handle 17 on the rear side of the top surface of the loading platform 15. The loading platform 15 is flat and has a planar shape with the central portions of both left and right side edges cut out in a concave shape. The loading platform 15 includes casters 19 attached via connecting members 26 to the four corners of the loading platform 15, i.e., the underside of the portions that are not cut out in a concave shape and protrude outward. The casters 19 are configured such that two wheels 22 are rotatably supported by a fork 20 via a rotating shaft 21. The wheels 22 rotate around the rotating shaft 21 to guide the dolly 11 to move in the front-rear direction. The wheels 22 also include a plurality of rotating bodies 22a along the circumferential direction, and each rotating body 22a is configured to allow movement in the axial direction of the rotating shaft 21. This allows the dolly 11 to move in the front-rear and left-right directions. The dolly 11 does not include a driving source for movement and cannot run on its own. The wheels 22 of the cart 11 rotate in response to the external biasing force, and the cart 11 moves in the direction of the biasing force.

[0034] In addition, two pins 23 are arranged in a hanging state at a predetermined distance in front and behind the underside of the loading platform portion 15. A coupling mechanism provided on the upper surface of the transport device 12 utilizes these pins 23 to couple to and disconnect from the dolly 11. When the transport device 12 moves in a coupled and integrated state, the integrated dolly 11 also moves. On the other hand, when the coupling mechanism is released and the transport device 12 moves in a separated state from the dolly 11, the dolly 11 remains in its position, and the transport device 12 moves away from the dolly 11.

[0035] The upper surface of the loading platform 15 is provided with a support mechanism 30 for temporarily supporting the original roll 9. The support mechanism 30 includes a column 32 formed by combining a plurality of members formed upright on a rectangular flat plate 31 attached to the front side of the upper surface of the loading platform 15, and a support shaft 33 fixed to the front surface of the column 32 in a cantilevered manner. The support shaft 33 is located in a horizontal plane parallel to the loading platform 15 and is arranged to extend perpendicularly from the front edge of the loading platform 15 toward the front in a plan view. The support shaft 33 is provided at a height corresponding to the height position of the rotating support shaft 7 that is on standby as a spare. The height corresponding to the height should be the same as that of the rotating support shaft 7, and should be slightly lower than that of the rotating support shaft 7.

[0036] As shown in Figs. 8 to 10 and enlarged views in Figs. 28 to 33, the support shaft 33 includes a slender rectangular base plate 35 having one end connected to the column section 32, a plurality of rollers 37 attached to both left and right sides of the base plate 35 via L-shaped plates 36, and a disk 39 attached to the upper surface of the base plate 35 via an L-shaped plate 38. The upper and lower surfaces and left and right side surfaces of the one end side of the base plate 35 are provided with flat support members 34 that come into contact with the side surfaces and the front surface 32a of the column section 32. Two adjacent orthogonal surfaces of the support member 34 are fixed to the side surfaces of the base plate 35 and the front surface 32a of the column section 32, respectively, thereby reinforcing the support structure of the base plate 35 and maintaining a vertically extended position even when a heavy original roll 9 is set.

[0037] The rollers 37 are, for example, made of bearings, and are rotatably supported on shafts 40 attached to the lower surface of the horizontal portion 36a of the L-shaped plate 36 so as to extend downward, and rotate about the shafts 40. The shafts 40 are arranged on the same straight line along the longitudinal direction of the base plate 35. The rollers 37 are of the same size and shape, and are attached at the same height. As a result, the left and right rollers 37 are lined up in a row from front to back on the horizontal plane. The leftmost end of the left roller 37 and the rightmost end of the right roller 67 are located on the same plane.

[0038] The disks 39 are fixed in parallel to one surface of the vertical portion 38a extending vertically of the L-shaped plate 38. This is achieved by fastening the male threads of bolts 43 inserted into the disks 39 to the female threads provided on the vertical portion 38a, and clamping and fixing the disks 39 between the heads of the bolts 43 and the vertical portion 38a. The bolts 43 are arranged on the same straight line along the longitudinal direction of the base plate 35. As a result, the disks 39 are lined up in a row from front to back on the vertical plane. The upper ends of the disks 39 are also located on the same plane.

[0039] The diameter of the circumscribing circle where the left and right rollers 37 and the disks 39 are in contact is made smaller than the inner diameter of the paper tube 9a of the original web roll 9 (see FIG. 11). This allows the support shaft 33 to enter the paper tube 9a of the original web roll 9. Then, by inserting the tip of the support shaft 33 (the side opposite the pillar portion 32) of the original web roll 9 from one opening side of the paper tube 9a, the original web roll 9 can be set on the support shaft 33 and supported.

[0040] The upper and lower surfaces of the base plate 35 are provided with stopper portions 44 on the rear side of the area where the rollers 37 and disks 39 are arranged. The stopper portions 44 are located immediately adjacent to the rear side of the L-shaped plate 38. The upper and lower stopper portions 44 are located on the same vertical plane, on a plane perpendicular to the longitudinal direction of the base plate 35. As a result, when the original web roll 9 is pushed in from the tip side of the support shaft 33 and attached, if the axial rear surface of the original web roll 9 comes into contact with the stopper portions 44, further movement is suppressed.

[0041] In addition, the length of the section of the support shaft 33 to which the rollers 37 and disks 39 are attached is longer than the axial length of the original roll 9, i.e., the film width. As a result, when the original roll 9 is pushed all the way into the support shaft 33, the tip of the support shaft 33 protrudes outside the original roll 9 (see FIG. 12). The left and right rollers 37 and disks 39 are arranged to extend in three orthogonal directions in a vertical plane, and when viewed in a vertical plane perpendicular to the support shaft 33, the paper tube 9a of the original roll 9 attached to the support shaft 33 is supported by contact at one point on the disk 39 or at two or three points including one or both rollers 37 in the circumferential direction of the inner surface, depending on the difference between the diameter of the circumscribed circle and the inner diameter of the paper tube 9a. 11, for convenience of illustration, the upper disc 39 is in contact with the uppermost point of the inner circumferential surface of the cardboard tube 9a, and in order to depict a state in which the cardboard tube 9a is supported without shaking to the left and right, both the left and right rollers 37 are in a state of being separated from the inner circumferential surface of the cardboard tube 9a. When the original roll 9 shakes during transportation, etc., either the left or right roller 37 comes into contact with the inner circumferential surface of the cardboard tube 9a.

[0042] Furthermore, when viewed in the axial direction of the support shaft 33, i.e., the longitudinal direction, the rollers 37 and the disks 39 come into point contact at intervals equal to the arrangement pitch. This reduces the contact resistance when the original web roll 9 is moved in the axial direction. Furthermore, since the left and right rollers 37 are rotatable, for example, when the original web roll 9 moves in the axial direction and the inner circumferential surface of the paper tube 9a comes into contact with the rollers 37, the rollers 37 rotate in the direction of movement, thereby further reducing the contact resistance. This makes it possible to mount and remove the original web roll 9 from the support shaft 33 with a small force.

[0043] In addition, since the rollers 37 are arranged on the same straight line, for example, when the web roll 9 is positioned parallel to the longitudinal direction of the base plate 35, when the inner circumferential surface of the paper tube 9a comes into contact with either the left or right roller 37, the rollers 37 on the contacting side come into contact with the inner circumferential surface, and the rollers 37 rotate in the direction of movement of the web roll 9 to guide the movement. Therefore, the axial movement of the web roll 9 is stably performed.

[0044] On the other hand, the disk 39 protruding upward is fixed to the L-shaped plate 38 so as not to rotate, and therefore generates a certain degree of resistance during movement, even though the contact resistance in the axial direction of the original web roll 9 is small. Therefore, while the dolly 11 is moving with the original web roll 9 attached to the support shaft 33, the original web roll 9 is prevented from coming off the support shaft 33 as much as possible. That is, for example, if the dolly 11 suddenly stops while moving forward, the original web roll 9 is biased toward the axial direction of the support shaft 33 by inertia, and tries to move forward along the axial direction. At this time, since the disk 39 is fixed by the bolt 43, the contact portion of the disk 39 that contacts the paper tube 9a does not move even if the original web roll 9 tries to move forward, and exerts a certain degree of resistance against the paper tube 9a in the moving direction. The disk 39 is disposed above the support shaft 33, and the paper tube 9a of the original web roll 9 always comes into contact with the disk 39, and the weight of the original web roll 9 is applied to the disk 39. As a result, as described above, the disks 39 generate a certain degree of contact resistance when the original web roll 9 moves in the axial direction, and prevent the original web roll 9 from coming off the support shaft 33 as much as possible.

[0045] A pusher plate member 41 for pushing out the raw fabric roll 9 set on the support shaft 33 is provided so as to be capable of reciprocating along the support shaft 33. The pusher plate member 41 has a substantially U-shaped, i.e., flat, body 41a, and has a concave cutout portion 41b at the middle of one side extending in the up-down direction of the body 41a. The pusher plate member 41 is disposed so that the support shaft 33 is located within the concave cutout portion 41b.

[0046] The pusher plate member 41 is connected to a drive mechanism 42 that causes a reciprocating linear motion, and moves reciprocatingly along the support shaft 33. The drive mechanism 42 has the following configuration. As shown in enlarged views in Figs. 13 and 14, etc., a mounting plate 47 is fixed to the side of the tip end of a first rail 46 that constitutes a first linear guide 45. Then, L-shaped connecting plates 48 are attached to the outer surface of the mounting plate 47 (the surface opposite to the contact surface with the first rail 46) at two positions, one above the other. Furthermore, the rear side of the pusher plate member 41 is attached to the front ends of the two upper and lower connecting plates 48 to be integrated. The first rail 46 is linked to two first carriages 50 that constitute the first linear guide 45. The two first carriages 50 are attached to a support plate 51 that is formed upright on the left edge side of the upper surface of the loading platform 15 so as to be arranged in a line at the same height. As a result, the two first carriages 50 are fixed in a predetermined position. Therefore, the first rail 46 is installed so as to be movable back and forth along the longitudinal direction, i.e., the front-rear direction of the dolly 11, while being stably supported by the two first carriages 50. As the first rail 46 moves back and forth, the pusher plate member 41 attached to the first rail 46 also moves forward and backward.

[0047] Meanwhile, a ball screw 52 is disposed so as to extend parallel to the longitudinal direction of the first rail 46. That is, both ends of the ball screw 52 are rotatably supported by bearings 54. The rear end side of the first rail 46 is connected to a moving body 53 that moves forward and backward along the ball screw 52. The moving body 53 has a nut therein that meshes with the ball screw 52, ​​and moves forward and backward as the ball screw 52 rotates forward and backward. As the moving body 53 moves forward and backward, the first rail 46, and therefore the pusher plate member 41, move forward and backward.

[0048] An operating handle 55 is connected to the front end side of the ball screw 52 via a power conversion mechanism 57 that changes the rotation direction of a predetermined gear mechanism or the like. By rotating the operating handle 55 forward or backward, the ball screw 52 rotates forward or backward.

[0049] In addition, the support plate 51 is provided with a lock mechanism 56 for preventing the rotation of the operating handle 55 on the surface opposite to the surface on which the first carriage 50 is attached. In this lock mechanism 56, a lock plate 56b on the tip side opens and closes with a hinge portion 56a as a base point, and in the closed state shown in FIG. 13, etc., the lock plate 56b sandwiches the handle portion 55a of the operating handle 55 from above and below, preventing the rotation of the operating handle 55. On the other hand, when the lock plate 56b is displaced to the open state, the lock plate 56b moves away from the operating handle 55 and the handle portion 55a (see FIG. 27, etc.), allowing the rotation of the operating handle 55. In addition, a grip portion 56c is provided at a predetermined position on the upper surface of the lock plate 56b.

[0050] In this embodiment, a positioning plate 60 is provided on the front side of the loading platform 15 so as to protrude forward. A front edge 60a of the positioning plate 60 is disposed parallel to the front edge of the loading platform 15. Therefore, the front edge 60a is perpendicular to the axis of the support shaft 33 in a plan view.

[0051] The positioning plate 60 has two positioning holes 61 on the left and right. In this embodiment, the two positioning holes 61 have the same size and shape. The positioning holes 61 extend in the front-rear direction and are narrower at the front end (tip) side and wider at the back side. As a specific example, the positioning hole 61 has a first region 61a having a substantially circular shape, a second region 61b on the front side of the first region 61a, the width of which gradually narrows as it moves forward from the first region 61a, and a third region 61c provided following the front end of the second region 61b. The third regions 61c of the left and right positioning holes 61 are formed at equal distances from the front end edge 60a of the positioning plate 60.

[0052] The positioning device 13 is mainly installed on the side of the reverse pillow packaging machine 1 and the film supplying device 4, and an example of a specific configuration is as follows: As shown in Fig. 15 and subsequent figures, the positioning device 13 includes an L-shaped arm portion 66 having two positioning pins 65 at its front end that can enter positioning holes 61 of a positioning plate 60 provided on the dolly 11, a drive device 70 that raises and lowers the front end side of the arm portion 66 and moves the arm portion 66 back and forth, and a stopper member 71 that is located on the front edge side of the reverse pillow packaging machine 1 (film supplying device 4).

[0053] The arm portion 66 includes a rod-shaped first portion 66a that is arranged to extend along the front surface of the inverted pillow packaging machine 1 while protruding to the front side thereof, and a second portion 66b that extends rearward from one end of the first portion 66a. A flat plate 72 is provided on the underside of the first portion 66a, and a positioning pin 65 is attached to the underside of the flat plate 72 so as to hang down. The spacing between the two positioning pins 65 is set to match the spacing between the two positioning holes 61 provided in the positioning plate 60. The diameter of the two positioning pins 65 is set to be the same as or slightly smaller than the width of the third region 61c of the positioning hole 61.

[0054] The driving device 70 includes a first cylinder 73 as a driving source for moving the arm portion 66 forward and backward, and a second cylinder 75 as a driving source for raising and lowering the front end side of the arm portion 66, i.e., the first portion 66a. The driving device 70 is attached to a predetermined position on the upper surface of a floor plate 68. More specifically, a base plate 69 is connected to the upper surface of the floor plate 68, and the driving device 70 is provided on the base plate 69. The cylinder rod 73a of the first cylinder 73 is provided so as to move in the forward and backward directions, and the tip of the cylinder rod 73a is connected to a moving plate 76. The moving plate 76 is made of a rectangular flat plate, and is guided by a pair of second linear guides 77 arranged at a predetermined interval on the left and right, and moves forward and backward by being driven by the first cylinder 73. That is, second rails 78 constituting the second linear guide 77 are arranged on the left and right, and second carriages 79 are attached to the second rails 78 on the left and right, respectively. The moving plate 76 is disposed so as to straddle the pair of second carriages 79 , and the second carriages 79 are fixed to the lower surface of the moving plate 76 .

[0055] The first cylinder 73 is an air cylinder that operates in two stages. The operation of the first cylinder 73 is controlled so that it operates in two stages during forward movement to move the arm portion 66 forward, and operates in one stage during reverse movement to move the arm portion 66 backward.

[0056] Furthermore, a pair of bearings 80 are provided on the left and right sides of the upper surface of the moving plate 76, and a rotation shaft 81a of a block body 81 disposed between them is supported rotatably within a predetermined angular range. An end of the second part 66b of the arm part 66 is connected to the front side of the block body 81.

[0057] The second cylinder 75 is attached upright at a predetermined position forward of the second rail 78. The cylinder rod 75a of the second cylinder 75 is provided so as to move in the vertical direction, and a box-shaped frame body 83 with openings at the front and rear is connected to the tip of the cylinder rod 75a. The second part 66b of the arm part 66 is inserted into this frame body 83. The vertical distance inside the frame body 83 is longer than the height of the second part 66b to allow the arm part 66 to move relatively in the vertical direction within the frame body 83. The second part 66b of the arm part 66 moves up and down following the vertical movement of the frame body 83 driven by the second cylinder 75. As a result, the arm part 66 rotates around the rotation shaft 81a of the block body 81, rotating forward and backward within a predetermined angle range, and the first part 66a and the positioning pin 65 attached thereto move up and down.

[0058] Furthermore, in this embodiment, a guide member 85 that engages with the second portion 66b is provided in front of the second cylinder 75. The guide member 85 has a recess 85a formed in the center of the upper surface, and the second portion 66b of the arm portion 66 is inserted into the recess 85a. The width of the recess 85a is made equal to the width of the second portion 66b to prevent the arm portion 66 from shaking side to side. Furthermore, an upper holding member 86 is connected to the upper front surface of the guide member 85 to prevent the second portion 66b from rising too high.

[0059] Also, a collaborative robot 90 is provided adjacent to the positioning device 13. In relation to this embodiment, this collaborative robot 90 performs processes of opening and closing the lock mechanism 56 and rotating the operating handle 55 forward and backward. The collaborative robot 90 includes a robot arm 91 and a hand unit 92 attached to the tip of the robot arm 91. The hand unit 92 includes two claw members that can be opened and closed. The robot arm 91 appropriately rotates each joint upon receiving a command from the control device of the collaborative robot 90, and moves the hand unit 92 to a desired position in three-dimensional space. Furthermore, the hand unit 92 opens and closes the two claw members upon receiving a command from the control device.

[0060] Then, the hand unit 92, while gripping the gripping portion 56c of the locking mechanism 56, moves the hand unit 92 to open the lock plate 56b. When the hand unit 92, while gripping the handle portion 55a of the operating handle 55, rotates the operating handle 55 in the forward direction, the pusher plate member 41 moves forward. Accordingly, the pusher plate member 41 pushes the original roll 9 forward from the support shaft 33 and transfers it to the rotating support shaft 7.

[0061] In addition, the tip of the rotary support shaft 7 has a tapered surface tapered toward the tip, and is formed into a substantially truncated cone shape. As a result, even if the rotary support shaft 7 and the support shaft 33 are not on the same straight line and are slightly misaligned, the front opening portion of the paper tube 9a of the original web roll 9 pushed out by the pusher plate member 41 is guided by the tapered surface of the rotary support shaft 7 and moves forward to match the axis of the rotary support shaft 7. Furthermore, if the support shaft 33 of the dolly 11 is pushed out while being aligned to a position slightly lower than the rotary support shaft 7, the original web roll 9 can be transferred to the rotary support shaft 7 in a floating and elevated position relative to the support shaft 33. In this way, the original web roll 9 can be transferred even if it is slightly misaligned. The original web roll can be attached to the rotary support shaft 7 even if the stop position of the original web roll attachment device 10 and the stop position of the rotary support shaft 7 are roughly aligned.

[0062] The stopper member 71 is made of an L-shaped plate, and is attached so that a horizontal portion 71a is fixed to a predetermined position at the front end of the upper surface of the base plate 69, and a vertical portion 71b stands upright from the front edge of the base plate 69. The predetermined position at the front end is aligned with the position of the first portion 66a of the arm portion 66, and is provided at a height that allows contact with the positioning plate 60.

[0063] The raw fabric roll mounting device 10 configured as described above operates as follows to mount the raw fabric roll 9 on the rotating support shaft 7. First, the conveying device 12 enters the bottom side of the dolly 11, and the dolly 11 is connected and integrated by a connecting mechanism using two pins 23 provided on the underside of the loading platform 15. When the conveying device 12 moves in this state, the integrated dolly 11 also moves. Then, when the conveying device 12 is located at the storage location for the raw fabric roll, the conveying device 12 and the dolly 11 temporarily stop. At this time, the pusher plate member 41 of the dolly 11 retracts and is in a standby position near the pillar 32. An operator sets the raw fabric roll on the support shaft 33 of the dolly 11.

[0064] After the original roll is set on the support shaft 33 in this manner, the conveying device 12 moves along a predetermined route, moves the cart 11 to just before the film supplying device 4 of the reverse pillow packaging machine 1, and stops temporarily. The conveying device 12 used in this embodiment is an AGV, and the positioning accuracy of the stopping position of this AGV is not high, and has an error of, for example, about 10 mm. As a result, the position of the cart 11 when it stops just before the film supplying device 4 is not necessarily the same but may be different each time.

[0065] The position on the front side of the film supply device 4 where the dolly 11 is stopped is a position where the front end of the positioning plate 60 attached to the front edge side of the dolly 11 faces and is slightly spaced apart from the stopper member 71. At this time, the positioning device 13 is in a standby position with the arm portion 66 in the forward position (the cylinder rod 73a is extended by the forward movement of the first cylinder 73) and the first portion 66a raised (see FIG. 21, etc.).

[0066] In this standby position, the lower end of the positioning pin 65 is located above the upper surface of the positioning plate 60. Therefore, when the carriage 11 stops in front of the film supply device 4 as described above, the positioning plate 60 is located below the first portion 66a of the arm portion 66 (see Figs. 17 to 19, Fig. 22(a), etc.). In addition, the two positioning pins 65 are located in the first regions 61a of the two positioning holes 61 provided in the positioning plate 60 in a plan view. As described above, the positioning accuracy of the transport device 12 is not high and the carriage 11 cannot be stopped at a fixed position, but the first region 61a is made sufficiently large for the positioning pins 65 and is large enough to cover the range of positional deviation due to positioning error.

[0067] Next, the transport device 12 releases the hold on the cart 11 and retreats (see FIG. 22(b) and the like). Then, the second cylinder 75 is driven, and the cylinder rod 75a moves back and is stored in the main body, and the frame body 83 moves downward. In response to this, the second portion 66b of the arm portion 66 rotates and the first portion 66a moves downward, and the positioning pin 65 enters the first region 61a of the positioning hole portion 61 of the positioning plate 60.

[0068] While the arm portion 66 maintains this lowered position, the first cylinder 73 performs a double movement, and the arm portion 66 moves backward, that is, the first portion 66a moves in a direction approaching the film supply device 4. As a result, the positioning pin 65 advances from the first region 61a through the second region 61b within the positioning hole 61 to the third region 61c, and finally comes into contact with the tip of the third region 61c.

[0069] When the arm portion 66 further moves backward in this state, the positioning pin 65 pulls the positioning plate 60, and therefore the dolly 11, toward the film supply device 4. When the front end edge 60a of the positioning plate 60 comes into contact with the stopper member 71, further movement is prevented, and the dolly 11 stops at that position (see Figures 23 to 25, etc.). This stopping position is always the same due to the positional relationship between the positioning pin 65, the third region 61c of the positioning hole portion 61, and the stopper member 71, and the dolly 11 can be determined to stop at this position.

[0070] The support shaft 33 of the cart 11 stopped in this manner faces the rotary support shaft 7 in a predetermined positional relationship, for example, so as to be positioned on the same straight line (see Figures 26, 27, etc.). Note that the predetermined positional relationship is not limited to this, and any appropriate embodiment can be used, for example, the support shaft 33 can be positioned slightly lower. In any embodiment, the stopping position is specified to be the same, so the cart always stops in the set positional relationship.

[0071] Next, the collaborative robot 90 rotates the operating handle 55 in a predetermined direction. This causes the pusher plate member 41 to move forward, pushing the original web roll 9 supported by the support shaft 33 forward, i.e., toward the rotating support shaft 7 of the film supply device 4. When the pusher plate member 41 reaches the rotating support shaft 7, the original web roll 9 is transferred to the rotating support shaft 7, completing the attachment of the original web roll 9 to the rotating support shaft 7 (see FIG. 26, etc.).

[0072] As described above, the support shaft 33 includes multiple non-rotating disks 39 and multiple rotatable rollers 37 arranged on the left and right, and has a small contact resistance with the paper tube 9a. Therefore, even if the biasing force of the pusher plate member 41 on the original web roll 9 is weak, the original web roll 9 can be pushed out and transferred to the rotating support shaft 7. Particularly in this embodiment, the collaborative robot 90 controls the pusher plate member 41 to move forward by rotating the operation handle 55 in the forward direction, and although the biasing force is small, the original web roll 9 can be reliably pushed out as described above.

[0073] Next, the collaborative robot 90 rotates the operating handle 55 in the reverse direction, and moves the pusher plate member 41 backward to the standby position. The first cylinder 73 moves forward in two stages. That is, the arm portion 66 and the positioning pin 65 are returned slightly forward from the position where they were pulled in by the first forward movement. The distance of this return may be, for example, about 15 mm. As a result, the positioning pin 65 moves away from the tip of the third region 61c and reaches the third region 61c or the second region 61b. In this state, the second cylinder 75 moves forward to raise the frame 83. Accordingly, the first portion 66a of the arm portion 66 and the positioning pin 65 rise, and the positioning pin 65 leaves the positioning hole portion 61 and is positioned above the positioning plate 60. This upward movement of the positioning pin 65 occurs with the rotation of the arm portion 66, so it moves while turning in a direction approaching the film supply device 4 side, not in a vertical direction. In this embodiment, since the positioning pin 65 is separated from the tip of the third region 61c by the first-stage forward movement, the positioning pin 65 smoothly rises without interfering with the tip of the third region 61c. This puts the carriage 11 into a free state.

[0074] Thereafter, the first cylinder 73 performs a second forward movement, and the positioning pin 65 moves to a predetermined position above the first region 61a. The transport device 12 then enters the lowering of the free carriage 11, connects with it, and moves the carriage 11 to a position to receive the next original roll. By repeating the above-mentioned operations thereafter, the original roll 9 set on the support shaft 33 of the carriage 11 can be automatically attached to the rotating support shaft 7.

[0075] Furthermore, when the remaining amount of the original roll 9 that is set in the film supply device 4 and is currently supplying the packaging film 6 to the packaging machine main body 2 falls below a certain amount, the original roll 9 attached to the spare rotating support shaft 7 by the original roll attachment device 10 is connected to the packaging film 6 currently being supplied, and thereafter, the packaging film 6 is continuously supplied to the packaging machine main body 2. Then, as described above, the disk 8 rotates 180 degrees and the positions of the two rotating support shafts 7 are swapped. Therefore, the original roll 9 that was previously supplied to the packaging machine main body 2, i.e., the paper tube 9a around which a small amount of packaging film 6 is wound, is attached to the rotating support shaft 7 that has now come to the spare position.

[0076] Therefore, when the dolly 11 on which the above-mentioned original web roll 9 is set arrives in front of the film supply device 4, the above-mentioned used original web roll 9 (paper tube 9a, etc.) is attached to the spare rotating support shaft 7. Therefore, prior to the above-mentioned work of attaching the original web roll 9, it is necessary to remove the used original web roll 9. In this embodiment, the removal work is also performed automatically. That is, the collaborative robot 90 includes a robot arm 91 and a hand unit 92 attached to the tip of the robot arm 91. The hand unit 92 includes two claw members that open and close, and the hand unit 92 grips the used original web roll 9, and the robot arm 91 moves along a predetermined trajectory to remove the gripped original web roll 9 from the rotating support shaft 7. In reality, in this embodiment, the collaborative robot 90 performs this removal process before the dolly 11 arrives. Furthermore, prior to the process of removing the used original web roll 9, the film supply device releases the retention of the original web roll 9 by the air chuck of the rotating support shaft 7. Then, the collaborative robot 90 inserts one longitudinal end of the removed original fabric roll 9 into a cup-shaped collection container 95 provided on the cart 11, releases the grip of the hand unit 92, and transfers the original fabric roll 9. As a result, the rotating support shaft 7 in the spare position is empty of the original fabric roll 9, and a new original fabric roll 9 is attached to the rotating support shaft 7 by carrying out the above-mentioned process.

[0077] Furthermore, because the positioning accuracy of the transport device 12 is not high, the position of the carriage 11 when it stops in front of the film supply device 4 varies, and the positioning pin 65 reaches various positions within the first region 61a of the positioning hole 61 in a plan view. When the positioning pin 65 is located on an extension of the third region 61c, the positioning hole 61 changes position and enters the third region 61c as the arm portion 66 moves backward. On the other hand, when the positioning pin 65 is not located on an extension of the third region 61c, the positioning pin 65 comes into contact with the inner surface of the tapered second region 61b and is guided into the third region 61c.

[0078] Furthermore, when the dolly 11 stops at an angle relative to the film supply device 4, the first region 61a of the positioning hole 61 is wide, so that the dolly 11 and therefore the positioning plate 60 are at an angle and the two positioning pins 65 enter into the respective positioning holes 61. Once entered, the two positioning pins 65 pull the positioning plate 60 and therefore the dolly 11, and even if the dolly 11 approaches the film supply device 4 while remaining in an oblique position, the leading portion of the front end of the positioning plate 60 hits the stopper member 71, preventing the leading side from advancing forward. As a result of being further pulled by the positioning pins 65, the front end of the positioning plate 60 finally comes into surface contact with the stopper member 71, and the dolly 11 faces the film supply device 4. Furthermore, depending on the position at which the positioning pins 65 enter the positioning holes 61 of the positioning plate 60 of the dolly 11 stopped at an angle, the two positioning pins 65 may move toward the tip side of the positioning holes 61, and each may reach the tip of the third region 61c before the positioning plate 60 comes into contact with the stopper member 71. In that case, the orientation of the dolly 11 is corrected when the positioning pins 65 move, and thereafter, the dolly 11 is pulled toward the film supply device 4 while still facing forward, and comes into contact with the stopper member 71 to be positioned and fixed.

[0079] In the above embodiment, a plurality of disks 39 are fixedly installed on the upper surface side of the base plate 35, but some of the disks may be replaced with rotating rollers and bearings. Also, if the disks 39 do not fall during transportation, they may be rotatably attached without being fixed with bolts 43. In that case, it is preferable that the disks are harder to rotate than the rollers 37 provided on the left and right, and that the contact resistance is made larger.

[0080] In the above embodiment, the disks 39 are fixed to the upper surface of the base plate 35, but the shape of the member to which they are attached may be any shape as long as the contact areas appear discretely in the longitudinal direction. Also, the multiple contact areas may be configured with one member, such as a corrugated plate, and further, various configurations may be adopted, such as making the shape of the upper surface of the base plate 35 corrugated or providing partially protruding areas.

[0081] In the above-described embodiment, the configuration of the suppression section for suppressing the detachment of the raw roll 9 during movement of the raw roll mounting device 10 is configured to be shared by the configuration of the support shaft 33, such as a disk 39 provided on the upper surface side of the support shaft 33, but the present invention is not limited to this, and various types of detachment prevention mechanisms can be used.

[0082] 34(a-1) and (a-2), for example, a stopper plate 96 is attached to the tip side of the support shaft 33 so as to be movable up and down. When the original web roll 9 is attached, this stopper plate 96 is configured to be in a lowered position so that its upper end does not come into contact with the paper core 9a of the original web roll 9 (see FIG. 34(a-1)), and when transported, it is configured to be raised to a first position so that it can come into contact with the side of the original web roll 9 (see FIG. 34(a-2)).

[0083] Also, as in the above-described embodiment, the outer diameter (diameter of the circumscribing circle) of the support shaft 33 is smaller than the inner diameter of the paper tube 9a of the original roll 9, so even if the lower end of the stopper plate 96 protrudes below the support shaft 33 when the stopper plate 96 descends to the second position, it is sufficient that the stopper plate 96 is configured not to come into contact with the paper tube 9a. Also, it is more preferable to configure the lower end of the stopper plate 96 not to protrude below the support shaft 33 when in the second position.

[0084] The stopper plate 96 may be moved up and down by receiving power from a drive source such as a cylinder. Alternatively, the stopper plate 96 may be freely movable and moved up and down by an operator or the collaborative robot 90.

[0085] Although not shown, the support shaft 33 may be provided with disks 39 and rollers 37 on the top and left and right sides as in the above-mentioned embodiment. In this embodiment, when the original roll attachment device 10 moves, the stopper plate 96 takes the first position to prevent the original roll 9 from coming off the support shaft 33. Therefore, it is preferable to provide a rotating body such as a bearing that rotates easily like the left and right rollers 37 without providing the disk 39 or a rotating body that is difficult to rotate on the top side of the support shaft 33. In this way, the original roll 9 can be pushed out with less force when attached to the rotating support shaft 7 while preventing it from coming off during movement. This configuration is the same in various embodiments shown below.

[0086] As another embodiment of the separation prevention mechanism, for example, as shown in Fig. 34(b-1) and (b-2), a stopper plate 96 may be attached to the tip side of the support shaft 33 so as to be rotatable in a vertical plane. In this case, the stopper plate 96 may be configured so that when the original web roll 9 is attached, it is located at a lowered position and its upper end does not contact the paper core 9a of the original web roll 9, in a second posture (see Fig. 34(b-1)), and when transporting, it rotates to a higher position and is in a first posture that can contact the side of the original web roll 9 (see Fig. 34(b-2)). In addition, the center of rotation of the stopper plate 96 may be located above the center of the support shaft 33 so that the tip of the stopper plate 96 does not protrude below the support shaft 33 in the second posture, or if it does protrude, the amount of protrusion is small.

[0087] The stopper plate 96 may be moved up and down by receiving power from a drive source that outputs a rotational force, such as a motor. Alternatively, the stopper plate 96 may be freely movable and moved up and down by a worker or the collaborative robot 90. Alternatively, the stopper plate 96 may be freely rotatable and rotated by a worker or the collaborative robot 90.

[0088] As another embodiment of the separation prevention mechanism, for example, as shown in Fig. 34(c-1) and (c-2), the support shaft 33 may be provided rotatably. In the figure, a disk 39 is attached to the upper surface side of the base plate 35, but rollers are also provided on the left and right sides of the base plate 35, although not shown. When the original roll 9 is attached, the disk 39 takes the second position in the upper position as in the above-mentioned embodiment (see Fig. 34(c-1)), and when transporting, the support shaft 33 rotates and takes the second position in which the disk 39 is located at the lower position (see Fig. 34(c-2)). When in the second position, the inner surface of the paper tube 9a of the original roll 9 comes into contact with the lower surface of the base plate 35 continuously along the longitudinal direction, and the contact resistance is larger than the contact resistance with the fixed disk 39 as in the above-mentioned embodiment. Therefore, movement can be more reliably suppressed. The rotation of the support shaft 33 may be achieved by providing a mechanism for rotating the support shaft 33 around the axis using the power of various driving sources. Moreover, the disk 39 may be replaced with a roller or the like, as in the case of FIGS. 34(a-1) and (a-2).

[0089] Another embodiment of the separation prevention mechanism is configured so that, as shown in Figures 34(d-1) and (d-2), when the original web roll 9 is attached, the support shaft 33 is in the horizontal second position (see Figure 34(d-1)), and when transported, the support shaft 33 is in the second position with the upper end side of the support shaft 33 pointing upward (see Figure 34(d-2)). In this way, when in the second position, the original web roll 9 is urged by gravity toward the rear side of the support shaft 33, preventing separation during transport.

[0090] In addition, the position can be changed, for example, by mounting the plate 31 to which the support shaft 33 and the column portion 32 are attached so that they can rotate forward and backward around the rear edge as the center of rotation, and by raising and lowering the front end side using a cylinder 98 attached to the front end side.

[0091] In each of the above-described embodiments equipped with the separation prevention mechanism, when switching between the first position and the second position is performed using the force of a predetermined drive source, it is preferable to perform the switching depending on the connection state of the transport device 12 and the cart 11. That is, it is preferable to adopt the first position when the transport device 12 is connected to the cart 11, and the second position when the connection is released.

[0092] The switching control may be, for example, such that the control device of the transport device 12 wirelessly transmits information on the connection / disconnection, and the control device provided in the dolly 11 receives the information, and controls the switching of the posture based on the received information. Also, a sensor or switch that detects whether the transport device 12 is in a connected state, for example by gripping the pin 23, may be provided on the dolly 11 side, and the posture switching may be controlled based on the detection output. Also, whether or not the transport device 12 is connected is not limited to being directly detected, and may be indirectly detected, for example, by whether or not the transport device 12 is located below the dolly 11. Strictly speaking, even if the transport device 12 is located below the dolly 11, there is a period in which the connection is released, but if the transport device 12 is not at least below the dolly 11, the connection is released and the original roll is attached, so it is sufficient that the posture is in the second posture at that time. Also, since the transport device 12 is always present below the dolly 11 when the dolly 11 moves, it is sufficient that the posture is in the first posture at that time. Furthermore, the switching control is not limited to that based on the above-mentioned notification, and may be configured to be performed in conjunction with other operations. For example, a mechanism is provided that rotates the support shaft 33 around its axis by utilizing the power of a drive source for the operation of gripping the pin 23. This allows the support shaft 33 to rotate in conjunction with the operation of the transport device 12 gripping the pin 23 prior to transportation, and the operation of the transport device 12 releasing the grip of the pin 23 before transferring the original roll 9 to the rotating support shaft 7 after transporting the dolly 11 to a predetermined position on the front side of the film supply device.

[0093] Furthermore, in each of the above-described embodiments, the conveying device 12 is fixed using a pin 23 provided on the underside of the cart 11, but the method of fixing the conveying device 12 to the cart 11 is not limited to this, and various configurations can be adopted, such as, for example, raising the upper surface of the conveying device 12 and holding it in contact with the underside of the loading platform portion 15 of the cart 11.

[0094] In addition, in each of the above-described embodiments, the cart 11 does not have a self-propelled function and is configured to be transported by the transport device 12, but the present invention is not limited to this, and the cart 11 may be configured to have a self-propelled function.

[0095] Various aspects of the present invention have been described above using embodiments, but it should be noted that these embodiments and descriptions are not intended to limit the scope of the present invention, but are provided to aid in understanding the present invention. The scope of the present invention is not limited to the configurations and manufacturing methods explicitly described in the specification, but also includes combinations of various aspects of the present invention disclosed in this specification. Although the configurations of the present invention that are sought to be patented are specified in the appended claims, it is noted for the sake of clarity that configurations disclosed in this specification that are not currently specified in the claims may be claimed in the future. [Explanation of symbols]

[0096] 1: Reverse pillow packaging machine 4: Film supply device 5: Bag making machine 7: Rotating support shaft 9: Raw material roll 9a:Paper tube 10: Raw material roll mounting device 11: Cart 12: Transport device 13: Positioning device 30: Support mechanism 33: Support shaft 37: Laura 39: Disk 41: Pusher plate member 90: Collaborative robots 91: Robot arm 92: Hand section 96: Stopper plate

Claims

1. a carriage having a support shaft for detachably supporting a roll of a packaging film wound thereon; the raw web roll has a hole penetrating in an axial direction, and the support shaft is inserted into the hole to support the raw web roll; A plurality of rollers rotatable within a horizontal plane are provided on the left and right sides of the body of the support shaft, The upper surface side of the main body has a plurality of contact portions that contact the inner circumferential surfaces of the holes of the raw roll, the contact portions being discretely arranged along a longitudinal direction of the main body, The original roll mounting device includes a suppression section that suppresses the original roll from coming off from the front of the support shaft due to a biasing force applied to the original roll when the cart is transported.

2. a pusher member that moves forward and backward along the support shaft and contacts a rear surface of the raw fabric roll supported by the support shaft in the axial direction to urge the raw fabric roll forward; and a drive unit that moves the pusher member forward and backward, The contact resistance of the contact portion is smaller than the biasing force of the pusher member and larger than the biasing force applied to the original roll when the dolly is transported, and the contact portion constitutes the suppressing portion. The web roll mounting device according to claim 1 .

3. The original roll mounting device according to claim 2 , wherein the contact portion comprises a plurality of disks arranged in the longitudinal direction and fixedly installed.

4. 4. The original roll attachment device according to claim 3, wherein a part of the contact portion is a roller that rotates in a vertical plane.

5. the contact portion is a peripheral surface of a rotating body that rotates within a vertical plane, The web roll attachment device according to claim 2 , wherein the rotating body is configured to rotate less easily than the roller.

6. The support shaft is disposed at a lower position so as to be able to supply the raw material roll relative to a rotation support shaft supporting the raw material roll of a film supplying device of the packaging machine, The carrying-in side of the rotary support shaft has a tapered surface tapered toward the tip, The original roll mounting device according to any one of claims 1 to 5, wherein a diameter of a circumscribing circle circumscribing the contact portion in a vertical plane perpendicular to the longitudinal direction of the support shaft and the left and right rollers is smaller than an inner diameter of the hole.

7. The cart does not have a self-propelling function, The cart is configured to be transported to a front side of a film supplying device to which the original roll is attached while being connected to a self-propelled transporting device, The suppression unit is configured to take a first position for suppressing the separation of the original roll and a second position for allowing the separation, 2. The original roll mounting device according to claim 1, configured to take the first position when the transport device is connected to the carriage, and to take the second position when the transport device is released from the carriage.

Images