Original roll mounting device in packaging machine

Abstract

To provide an original roll mounting device that fixes the position of a carriage relative to a film supply device of a packaging machine.CONSTITUTION: The original roll mounting device includes: a dolly 11 having a support shaft for supporting the original roll 9; a positioning device 13 provided on the packaging machine side for pulling the dolly to the film supply device 4 side; and a stopper member 71. The dolly has a positioning plate 60 having a positioning hole 61 at the front end. The positioning device includes: a positioning pin 65 that can enter the positioning hole; an arm 63 to which the positioning pin is attached; and a drive unit 70 that moves the arm forward and backward and swings to raise and lower the positioning pin side. The first region 61a into which the positioning pin enters the positioning hole is wide, and the third region 61c continuing to the front side is narrow, so that even if there is a positioning error during temporary stop, the positioning pin can reliably enter and reach the third region and be pulled forward. The positioning plate comes into contact with the stopper member to be positioned.SELECTED DRAWING: Figure 16

Description

[Technical field]

[0001] The present invention relates to a roll mounting device for a packaging machine. [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 that temporarily holds 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), aligning the support shaft on the cart with the rotating support shaft of the film supply device of the packaging machine, and transferring the original fabric roll held by the support shaft to the rotating support shaft.

[0009] The inner diameter of the paper core of the raw roll is almost equal to the outer diameter of the rotating support shaft, with the inner diameter of the paper core being slightly longer. Therefore, the relative positional relationship between the rotating support shaft and the support shaft on the cart needs to be aligned with high precision. In contrast, a transport device such as an AGV that transports the cart has a positioning error of, for example, about 10 mm. Therefore, the cart cannot be positioned at a predetermined position in the packaging machine simply by transporting it with an AGV or the like. In other words, if there is an error of 10 mm between the rotating support shaft and the support shaft, the raw roll cannot be transferred, and the installation of the raw roll cannot be automated.

[0010] The inventor therefore discovered a problem of how to accurately position the support shaft on the cart and the rotating support shaft on the packaging machine side, and after much ingenuity based on this problem, he devised the solutions described below.

[0011] In order to solve the above-mentioned problems, the fabric roll mounting device in the packaging machine of the present invention includes: (1) a cart having a support shaft for detachably supporting a fabric roll around which packaging film is wound; and a positioning device that is provided on the film supply device side of the packaging machine and positions a stop position of the cart, the support shaft being disposed on the front side of the cart at a height corresponding to a rotation support shaft that supports the fabric roll of the film supply device; the cart includes a positioning plate member provided on the front side, the positioning plate member having a first positioning portion, and the positioning device is disposed on the film supply device side at a stop position of the cart. the first positioning portion of the trolley, which is temporarily stopped in front of the film supply device, and a pulling means for pulling the second positioning portion toward the film supply device while the second positioning portion is linked to the first positioning portion so as to be movable relative to the film supply device, wherein the second positioning portion pulled by the pulling means comes into contact with the first positioning portion and urges the trolley in the pulling direction, and the front positioning portion of the trolley moving in the pulling direction comes into contact with a stopper portion, preventing further movement of the trolley and positioning the stop position of the trolley.

[0012] According to the present invention, a cart with a roll of raw material attached to a support shaft is positioned in front of a film supply device of a packaging machine and temporarily stopped. This temporary stop position does not need to be a specific fixed position, but is a position where the first positioning unit and the second positioning unit can be linked to be relatively movable. The positioning device links the first positioning unit and the second positioning unit with respect to the temporarily stopped cart and draws it toward the film supply device. Then, at the beginning of the drawing, the first positioning unit and the second positioning unit move relatively, but the cart remains at the temporarily stopped position because it does not contact the positioning plate. Then, when the first positioning unit and the second positioning unit come into contact with each other, a biasing force is applied to the positioning plate and thus to the cart in the moving direction of the second positioning unit. The cart moves toward the film supply device under the biasing force. Then, when the positioning unit provided on the front side of the cart comes into contact with the stopper unit, further movement is suppressed. Therefore, even if the temporary stop position is not determined, the position where the cart finally stops is uniquely determined at the position where it comes into contact with the stopper unit, and the cart is positioned. Since the support shaft detachably supports the original fabric roll, the original fabric roll supported by the support shaft can be pushed forward by a predetermined means, so that the original fabric roll can be attached to the rotating support shaft. The predetermined means may be, for example, the pushing means described in (9).

[0013] The positioning of the support shaft at a height corresponding to the rotating support shaft may, for example, mean that the support shaft and the rotating support shaft are at the same height and can be arranged on the same straight line, but is not limited to this and may be slightly shifted. In either position, it is preferable that the positional relationship is such that the raw roll pushed out from the support shaft in the positioned state can be transferred to the rotating support shaft side.

[0014] In the embodiment, the stopper portion corresponds to the stopper member 71. In the embodiment, it is arranged as a separate member from the packaging machine / film supply device, but for example, the surface of a side plate, machine frame, or other member provided on the packaging machine may be used as the stopper portion as long as it is a portion that can be uniquely positioned. Similarly, in the embodiment, the positioning portion on the dolly side is the front end surface of the positioning plate 60, but it is not limited to this and may be a portion that comes into contact with the stopper portion.

[0015] (2) The positioning portion may be the front edge of the positioning plate member. The positioning plate member is provided with a positioning hole portion into which the positioning pin enters, and is a member that is directly attracted by the positioning pin. Therefore, by making the front edge of the positioning plate member the positioning portion, a stopper portion can be disposed in front of the direction of attraction by the positioning pin. Also, there is no need to prepare a separate positioning portion.

[0016] (3) It is preferable that two positioning holes are provided on the left and right, and an imaginary line connecting the front end positions of the left and right positioning holes is perpendicular to the axial direction of the support shaft in a plan view. In this way, when positioned, the support shaft is oriented perpendicular to the film supply device. Therefore, it becomes parallel to the rotating support shaft, and the original roll can be smoothly transferred.

[0017] (4) The pulling means may include an arm portion that is movable toward and away from the trolley, and the positioning pin may be provided on the upper or lower surface of the tip of the arm portion, and the pulling may be performed by moving the tip of the arm portion toward the film supply device while the positioning pin is positioned within the positioning hole.

[0018] In this way, the positioning pin can be moved toward or away from the film supply device or the dolly by moving the arm part forward and backward. In addition, when the positioning pin is fixed to the upper or lower surface of the arm part, the positioning pin can be inserted into or removed from the positioning hole by moving the tip side of the arm part up and down. The positioning pin can be inserted and removed from the positioning hole not only based on the up and down movement of the arm part, but also configured to move up and down relative to the arm part, and various configurations can be adopted. In addition, the mounting position of the positioning pin is the lower surface of the tip side (first part) of the arm part in the embodiment, but is not limited to this and may be provided on the upper surface. However, when provided on the upper surface, the positioning pin is inserted from below the positioning hole, so that in a configuration in which the positioning pin is inserted as the arm part moves up and down, for example, it may be difficult to secure a space for lowering the tip side of the arm part. In contrast, providing it on the lower surface is preferable because it is easy to secure a movement space for the arm part. In addition, the positioning pin and the arm part may be formed of separate members or integrally formed of the same member.

[0019] (5) The arm portion is configured to be L-shaped in a plan view, the tip side of the arm portion is arranged to extend in a direction perpendicular to the advancing and retreating direction of the arm portion, two positioning pins are provided at a predetermined interval on the underside of the tip side, two positioning holes are provided on the left and right, and the positioning pins can enter the respective positioning holes. In this way, the device that moves the arm portion can be positioned offset to the side with respect to the positioning pins. This makes it possible to prevent interference with the original roll set in the film supply device, the rotating support shaft, and the members arranged around it.

[0020] (6) The L-shaped arm portion is configured such that a portion extending along the advancing / retreating direction rotates forward and backward within a predetermined angle range in a vertical plane, and the positioning pin provided on the tip side is raised and lowered by the forward and reverse rotation. In this way, the positioning pin can be raised and lowered with a simple configuration. The portion extending along the advancing / retreating direction corresponds to the second portion 66b in the embodiment.

[0021] (7) The positioning hole portion has a main region into which the positioning pin enters and a positioning region in front of the main region, the main region and the positioning region are connected, the positioning pin is formed to be able to move from the main region to the positioning region, the main region is wider than the planar dimension and shape of the positioning pin, and the horizontal width of the positioning region is equal to the horizontal width of the positioning pin.

[0022] In this way, even if the position where the carriage stops varies, the positioning pin can enter the positioning hole. In addition, since the width of the positioning area and the width of the positioning pin are equal, the position is determined by the positioning pin entering the positioning area. The main area corresponds to the first area 61a in this embodiment, and the positioning area corresponds to the third area 61c in this embodiment.

[0023] (8) It is preferable that the width of the region connecting the main region and the positioning region is gradually narrowed, so that the positioning pin that has entered the main region is smoothly guided into the positioning region by moving in the retracting direction.

[0024] (9) The carriage may include a push-out means for pushing out the raw fabric roll supported by the support shaft from the front end of the support shaft. The push-out means may include, for example, a pusher member that contacts the rear end side of the axial direction of the raw fabric roll, and a drive mechanism for moving the pusher member forward and backward along the support shaft. In the embodiment, the drive mechanism moves the pusher member forward and backward by turning an operating handle of the collaborative robot, but is not limited to this. For example, a drive motor, a cylinder, or other drive source is disposed on the carriage side, and the pusher member is moved forward and backward using the power of the drive source. In the embodiment, the pusher member corresponds to the pusher plate member 41.

[0025] (10) The first positioning portion is a positioning hole portion, and the second positioning portion is a positioning pin that can enter the positioning hole portion, and the positioning pin attracted by the attracting means contacts an inner surface of the positioning hole portion and urges the cart in the attracting direction.

[0026] In this way, the cart with the raw roll attached to the support shaft is positioned in front of the film supply device of the packaging machine and temporarily stopped. This temporary stop position does not need to be a specific fixed position, but is a position where the positioning pin can enter the positioning hole. The positioning device enters the positioning pin into the positioning hole and pulls the temporarily stopped cart toward the film supply device. Then, at the beginning of the pull, the positioning pin moves inside the positioning hole, but the cart remains at the temporary stop position because it does not contact the positioning plate. Then, when the positioning pin contacts the inner surface of the positioning hole, a biasing force in the direction of movement of the positioning pin is applied to the positioning plate and the cart. The cart moves toward the film supply device by receiving this biasing force. Then, when the positioning part provided on the front side of the cart contacts the stopper part, further movement is suppressed. Therefore, even if the temporary stop position is not determined, the position where the cart finally stops is uniquely determined at the position where it contacts the stopper part, and it is positioned.

[0027] (11) The cart may not have a self-propelled function, and may be configured so that the cart is transported to the front side of the film supply device while being connected to a self-propelled transport device.

[0028] In addition, the configurations shown in (1) to (11) 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

[0029] According to the present invention, even if there is a positioning error when the dolly is temporarily stopped in front of the film supply device, the dolly can be fixed at a predetermined position relative to the film supply device of the packaging machine. [Brief description of the drawings]

[0030] [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 original roll mounting device. [Diagram 23] FIG. 1 is a perspective view (part 1) 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. 4 is a plan view showing an example of a positioning hole portion. [Figure 29] FIG. 13 illustrates another embodiment of a positioning device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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 is omitted, a rotating support shaft 7 on which a raw roll 9 is mounted is attached to a disk 8. Two rotating support shafts 7 are prepared and 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 so as to be rotatable around its 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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 base 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.

[0042] As shown enlarged in Figs. 8 to 10, the support shaft 33 includes a slender rectangular base plate 35, one end of which is connected to the column portion 32 via a connecting member 34, a plurality of rollers 37 attached to both the left and right sides of the base plate 35 via an L-shaped plate 36, and a disk 39 attached to the upper surface of the base plate 35 via an L-shaped plate 38. The rollers 37 are made of, for example, bearings, and are rotatably supported by an axis 40 attached to the horizontally extending surface of the L-shaped plate 36 so as to extend downward, and rotate around the axis 40. As a result, the left and right rollers 37 are aligned in a line from front to back in a horizontal plane. The disks 39 are fixedly installed parallel to the vertically extending surface of the L-shaped plate 38. As a result, the disks 39 are aligned in a line from front to back in a vertical plane.

[0043] 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.

[0044] 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.

[0045] Furthermore, when viewed in the axial direction of the support shaft 33, i.e., in the longitudinal direction, the rollers 37 and the disks 39 make point contact at intervals equal to the arrangement pitch. This reduces the contact resistance when moving the original web roll 9 in the axial direction. This makes it possible to mount and remove the original web roll 9 on and from the support shaft 33 with a small force. Furthermore, since the disks 39 protruding upward are fixed to the L-shaped plate 38 so as not to rotate, a certain degree of resistance is generated during movement, even though the contact resistance in the axial direction of the original web roll 9 is small. This prevents the original web roll 9 from coming off the support shaft 33 as much as possible while the cart 11 is moving with the original web roll 9 mounted on the support shaft 33.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] Furthermore, the support plate 51 is provided with a lock mechanism 56 for preventing rotation of the operating handle 55 on the surface opposite to the surface on which the first carriage 50 is attached. This lock mechanism 56 has a lock plate 56b on the tip side which opens and closes around a hinge portion 56a, 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 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 rotation of the operating handle 55.

[0051] 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.

[0052] 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.

[0053] 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).

[0054] 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.

[0055] 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 .

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] In addition, a collaborative robot 90 is provided adjacent to the positioning device 13. In relation to this embodiment, the collaborative robot 90 performs processes of opening and closing the lock mechanism 56 and rotating the operating handle 55 forward and backward. As a result, the operating handle 55 is rotated forward, the pusher plate member 41 is moved forward, the original roll 9 is pushed forward from the support shaft 33, and the original roll 9 is transferred to the rotation support shaft 7.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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.).

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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 position, so the cart always stops in the set positional relationship.

[0070] 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.).

[0071] 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.

[0072] 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.

[0073] 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.

[0074] Therefore, when the dolly 11 on which the above-mentioned original roll 9 is set reaches the front of the film supply device 4, the above-mentioned used original roll 9 (paper tube 9a, etc.) is attached to the spare rotating support shaft 7. Therefore, before performing the above-mentioned work of attaching the original roll 9, it is necessary to remove the used original 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 has two claw members that open and close, and the hand unit 92 grips the used original roll 9, and the robot arm 91 moves along a predetermined trajectory to remove the gripped original roll 9 from the rotating support shaft 7. The collaborative robot 90 then inserts one end of the removed original roll 9 in the longitudinal direction into a cup-shaped collection container unit 95 prepared on the dolly 11, releases the grip of the hand unit 92, and transfers it. As a result, the rotating support shaft 7 in the spare position is empty and does not contain the original fabric roll 9, so that a new original fabric roll 9 is attached to the rotating support shaft 7 by performing the above-mentioned process.

[0075] 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.

[0076] 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.

[0077] In the above embodiment, the circular first region 61a is tapered at the tip end and passes through the second region 61b, but the shape of the positioning hole 61 may be of various shapes. That is, the region into which the positioning pin enters may be made wide in consideration of the positioning accuracy of the carriage 11 by the transport device, the width of the third region 61c (one example of the positioning region) at the front end may be set to a length corresponding to (for example, the same as) the diameter of the positioning pin 65, and the inner surface of the positioning hole may be shaped to have a guide surface that guides the positioning pin 65 from the wide region on the entry side to the region at the tip end. As an example, as shown in FIG. 28(a), the entry side region is made circular, and a tip region (third region 61c) for positioning is disposed on the tip side of the circular region. In the illustrated example, the third region 61c is approximately semicircular in shape, the same as the diameter of the positioning pin 65, and a part of the positioning pin 65 that is entered and positioned in the third region 61c is present in the first region 61a. In addition, as shown in Figure 28(b), the tip region (third region 61c) may be a strip-shaped long hole, or as shown in Figure 28(c), the long hole of the third region 61c may be shaped to have a tapered surface that tapers toward the tip, or various other shapes may be adopted.

[0078] Furthermore, the shape is not limited to the shape having a protruding area in front of the first area 61a as shown in the figure, and may be a shape without a protruding area. For example, it may be a circle. In the case of a circle, the positioning pin that contacts the inner surface moves along the circumferential direction and finally reaches the part located most forward on the circumference and is positioned. It may also be a triangle or other polygon, and in such a shape, one apex angle is formed to face forward. In this way, the positioning pin 65 moves forward inside the positioning hole 61, and when it contacts any side of the inner surface, it moves forward along that side and finally reaches one apex angle located forward and is positioned.

[0079] In the above embodiment, the arm 66 to which the positioning pin 65 is attached is rotated to move up and down, but it may be raised and lowered vertically. If it is raised and lowered vertically, there is no interference with the positioning hole 61 when the positioning pin 65 is raised, so it may be raised at a fixed position without being returned in two stages as in the above embodiment.

[0080] Also, instead of raising and lowering the arm portion 66, the positioning pin 65 may be attached to the arm portion 66 so as to be movable up and down, and the positioning pin 65 may be raised and lowered.

[0081] In the above-described embodiment, the arm portion 66 to which the positioning pin 65 is attached is L-shaped in a plan view, but the present invention is not limited to this, and for example, as shown in Fig. 29, two arm portions 96 extending in the front-rear direction are provided, and a positioning pin 97 extending downward is provided at the tip of the arm portion 96. In the illustrated example, the arm portions 96 and the positioning pin 97 are integrally formed. In other words, it is preferable to configure the tip of a rod-shaped plate to be bent downward.

[0082] The rear end of the arm 96 is connected to a rotating shaft 98, and both ends of the rotating shaft 98 are rotatably supported by bearings 99. Although not shown, the bearings 99 may be formed upright on the upper surface of the moving plate 76 in the above-mentioned embodiment, and may be linked to a drive device that moves the moving plate 76 forward and backward. Furthermore, the arm 96 is configured to be rotatable forward and backward within a predetermined angle range with the rotating shaft 98 as the center of rotation. As a result, when the tip of the arm 96 is positioned upward (see the two-dot chain line in FIG. 29(a-2)), the positioning pin 97 is positioned above the positioning plate 60, and when the tip of the arm 96 is positioned downward (see the solid line in FIG. 29(a-2)), the positioning pin 97 enters the positioning hole 61.

[0083] Furthermore, this arm portion 96 moves forward and backward in the same manner as in the embodiment described above, and when the arm portion 96 is moved backward while the positioning pin 97 is present within the positioning hole portion 61, the positioning pin 97 enters the third region 61c of the positioning hole portion 61 and continues to move backward, drawing the positioning plate 60 toward the film supply device 4 and bringing it into contact with the stopper member 71 to position and fix it (see Figures 29 (b-1, b-2), etc.).

[0084] Furthermore, by configuring the arm portion 66 to be L-shaped in a plan view as in the above-described embodiment, the drive mechanism for moving the arm portion 66 back and forth and raising and lowering it can be installed next to the film supply device, etc. in the film supply device 4, which is preferable because it allows installation space to be secured even if the film supply device is installed too low to place the drive mechanism below it.

[0085] In addition, in the above-described embodiment, the positioning hole 61 is provided in the positioning plate 60 and the positioning pin 65 is attached to the arm portion 66, but the arrangement may be reversed, with a positioning pin provided on the positioning plate provided on the trolley 11, and a member with a positioning hole into which the positioning pin can be inserted provided on the positioning device 13, and the trolley 11 may be pulled to a predetermined position by raising and lowering the member and moving it forward and backward.

[0086] In the above embodiment, the pusher plate member 41 and the drive mechanism 42 constituting the pushing means for pushing the web roll 9 mounted on the support shaft 33 forward are provided on the cart 11, and the drive mechanism 42 is operated by the collaborative robot 90 provided on the packaging machine side, but the present invention is not limited to this, and a drive source such as a drive motor for operating the drive mechanism 42 may also be provided on the cart 11. However, if a drive source is not provided on the cart 11 side as in the above embodiment, and the drive mechanism 42 is operated using the collaborative robot 90 provided on the packaging machine side, the weight of the cart 11 can be reduced, which is advantageous. In particular, when a plurality of carts 11 are prepared and the plurality of carts 11 are used to transport and transfer the web roll 9, the drive of the drive mechanism 42 provided on the plurality of carts 11 can be shared by the collaborative robot 90.

[0087] Furthermore, if the drive mechanism 42 is not provided and the pusher plate member 41 is moved forward and backward by a device provided outside the carriage 11, such as the collaborative robot 90, the weight can be further reduced by the amount of the omission of the drive mechanism 42. Furthermore, it is preferable to configure the original roll 9 to be directly pushed out by the collaborative robot 90 or the like. In this way, push-out means such as the pusher plate member 41 and a mechanism for guiding the forward and backward movement of the pusher plate member 41 becomes unnecessary, and the weight can be further reduced and the configuration can be simplified.

[0088] 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]

[0089] 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 roll mounting device 11: Cart 12: Transport device 13: Positioning device 30: Support mechanism 33: Support shaft 41: Pusher plate member 42: Driving mechanism 60: Positioning plate 60a: Front edge 61: Positioning hole 61a: 1st area 61b:Second area 61c: Third area 65: Positioning pin 66: Arm section 66a: 1st part 66b: 2nd part 70: Drive unit 71: Stopper part 90: Collaborative robots 91: Robot arm 92: Hand section

Claims

1. A cart having a support shaft for detachably supporting a roll of packaging film on which the packaging film is wound; A positioning device is provided on the film supply device side of the packaging machine and determines a stop position of the carriage, the support shaft is disposed on the front side of the dolly at a height corresponding to a rotation support shaft that supports the original web roll of the film supply device, The carriage includes a positioning plate member provided on a front side thereof, The positioning plate member has a first positioning portion, the positioning device includes a second positioning portion linked to the first positioning portion of the carriage, the carriage being temporarily stopped in front of the film supply device, so as to be movable relative to the first positioning portion, and a pulling means for pulling the second positioning portion toward the film supply device while being linked to the first positioning portion so as to be movable relative to the second positioning portion; The second positioning portion attracted by the attracting means comes into contact with the first positioning portion, and urges the carriage in the attracting direction, This original roll mounting device is characterized in that the front positioning portion of the cart moving in the pulling direction contacts a stopper portion, thereby preventing further movement of the cart and positioning the stopping position of the cart.

2. 2. The original roll mounting device according to claim 1, wherein the positioning portion is a front edge of the positioning plate member.

3. The positioning holes are provided in two locations, one on the left and one on the right.

2. The original roll mounting device according to claim 1, wherein an imaginary line connecting front end positions of the left and right positioning holes is perpendicular to an axial direction of the support shaft in a plan view.

4. The pulling means includes an arm portion that is provided so as to be capable of moving toward and away from the cart, The positioning pin is provided on an upper surface or a lower surface of the tip side of the arm portion, The pulling is performed by moving the tip side of the arm portion toward the film supply device while the positioning pin is positioned within the positioning hole. The web roll mounting device according to claim 1 .

5. The arm portion is configured in an L-shape in a plan view, The tip side of the arm portion is disposed so as to extend in a direction perpendicular to a direction in which the arm portion moves forward and backward, The two positioning pins are provided at a predetermined interval on the lower surface of the tip side, The web roll mounting device according to claim 4, wherein the positioning holes are provided in two portions, one on each side, and the positioning pins are adapted to be able to enter the respective positioning holes.

6. The L-shaped arm portion is configured such that a portion extending along the forward / backward direction rotates forward and backward within a predetermined angle range within a vertical plane, The positioning pin provided on the tip side rises and falls due to the forward and reverse rotation. The web roll mounting device according to claim 5.

7. The positioning hole portion has a main area into which the positioning pin enters, A positioning area is provided on the front side of the main area, the main region and the positioning region are connected, and the positioning pin is formed to be movable from the main region to the positioning region; The main region is wider than the planar dimension of the positioning pin, 2. The original roll mounting device according to claim 1, wherein a width of the positioning area is equal to a width of the positioning pin.

8. The original roll mounting device according to claim 7, wherein a width of the region connecting the main region and the positioning region is gradually narrowed.

9. The web roll transport device according to claim 1 , wherein the carriage includes a push-out means for pushing out the web roll supported by the support shaft from a front end of the support shaft.

10. The first positioning portion is a positioning hole portion, the second positioning portion is a positioning pin that can enter the positioning hole portion, 2. The original roll transport device according to claim 1, wherein the positioning pin attracted by the attracting means comes into contact with an inner surface of the positioning hole portion to urge the carriage in the attracting direction.

11. The cart does not have a self-propelling function, 11. The original web roll mounting device according to claim 1, wherein the carriage is connected to a self-propelled transport device and transported to a position in front of the film supply device.

Images