Working unit movement guide device

Abstract

To provide a movement guide device for a work unit that can move the work unit smoothly and improve precision of work by the work unit.SOLUTION: A movement guide device for a work unit comprises: a moving body frame 56 to which the work unit can be fitted; a moving body 51 which has a preceding roller 53 provided to the moving body frame 56 and a following roller 54; and a movement guide member 52 which comprises a preceding roller movement guide member 57 comprising a first section 52a and a second section 52b where the preceding roller 53 moves and a following roller movement guide member 58 comprising the first section 52a and second section 52b where the following roller 54 moves, wherein the first section 52a and second section 52b have different movement path shapes, and in a section of the movement guide member 52 in which the work unit is driven, the following roller 54 moves from the first section 52a to the second section 52b while the following roller 53 moves from the first section 52a to the second section 52b.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a movement guide device for a working unit. [Background technology]

[0002] Conventional methods for intermittently driving a work unit on continuously supplied work objects to perform the desired work include a method of mounting a rotating body such as a roller on the work unit to move the work unit, and a method of forming a moving body that rotates the work unit and rotating the work unit itself to perform continuous work (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-51590 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional configuration, the mechanism for installing and moving / rotating the working unit generally uses a method of moving and rotating the working unit using multiple traveling rollers. In this case, the traveling roller moving ahead and the traveling roller moving behind move along the same path of the moving path of the working unit. Therefore, when the moving path shapes are different, such as straight lines and curves, there is a problem that the traveling rollers cannot move smoothly along the moving guide due to vibrations and rattles caused by changes in the moving path shapes between each roller at the connecting part between one moving path and the other moving path. As a result, there is a problem that the working accuracy of the working unit is affected, causing a strange appearance of the product and quality problems such as foreign matter being mixed into the product.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and aims to provide a work unit movement guide device that can smoothly move the work unit and improve the work accuracy performed by the work unit. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the moving guide device for a working unit of the present invention comprises a moving body having a moving body frame to which a working unit can be attached, a leading roller that moves ahead and is provided on the moving body frame, and a trailing roller that moves behind and is provided on the moving body frame, a leading roller moving guide member in which a first moving path is formed with a first section along which the leading roller moves and a second section continuous with the first section, and a trailing roller moving guide member in which a second moving path is formed with the first section and the second section along which the trailing roller moves, wherein the first section and the second section have different moving path shapes, and are configured such that in the section of the moving guide member in which the working unit is driven, the leading roller moves from the first section to the second section at the same time that the trailing roller moves from the first section to the second section.

[0007] With the above configuration, when the leading roller and the trailing roller move from the first section to the second section or from the second section to the first section, they can simultaneously move from one section to the other section, and therefore the moving body can move smoothly without vibration or rattling due to changes in the shape of the moving path between the first section and the second section during the movement.

[0008] In addition, in the working unit movement guide device of the present invention, the leading roller movement guide member and the trailing roller movement guide member each have a ring-shaped outer shape, are formed from a plate-shaped member, and are arranged in a direction perpendicular to the movement direction of the moving body.

[0009] With the above-described configuration, it becomes possible to use the device as a movement guide device for a work unit that performs continuous work intermittently. Furthermore, since the space required for installing the movement guide device can be reduced, it is possible to provide the movement guide device and the working unit in a small space.

[0010] In addition, in the moving guide device for a working unit according to the present invention, the moving guide member has an annular shape with the first section formed in a straight line and the second section formed in a curved shape, the leading roller and the trailing roller are arranged on the same side of either the inside or the outside of the ring, and a clamping roller capable of moving following at least one of the leading roller and the trailing roller is arranged on the other side, the second section of at least one of the leading roller and the trailing roller and the annular section of the clamping roller are formed with the same center of rotation, and the radius of curvature may be determined by the distance from the center of rotation to the rotation axis of each roller.

[0011] With the above configuration, the leading roller, the trailing roller, and the clamping roller can move with the moving guide member clamped between them, preventing the rollers from coming off when moving. Also, the leading roller and the trailing roller can move from one section to the other section at the same time, and the clamping roller can move following at least one of the rollers, so that the moving body can move smoothly while more firmly preventing vibrations and rattles caused by changes in the shape of the moving path between the first section and the second section during movement. Effect of the Invention

[0012] According to the present invention, it is possible to provide a movement guide device for a working unit that can smoothly move the working unit and improve the accuracy of work performed by the working unit. [Brief description of the drawings]

[0013] [Figure 1]4 is a flowchart showing an overview of a film wrapping mechanism to which an example of a movement guide device for an operational unit according to an embodiment of the present invention is applied. [Diagram 2] 1 is a perspective view showing an example of a movement guide device for a working unit according to an embodiment of the present invention; [Diagram 3] 1 is a plan view showing an example of a movement guide device for a working unit according to an embodiment of the present invention. [Figure 4] 4(a) is a cross-sectional view taken along the line AA in Fig. 3. (b) is a view seen from the direction of the arrow B in Fig. 3. [Diagram 5] 1A is a perspective view showing a packaged product wrapped in a film before a flap expanding process is performed to which an example of a moving guide device for a working unit according to an embodiment of the present invention is applied, and FIG. 1B is a perspective view showing a packaged product wrapped in a film after a flap expanding process is performed to which an example of a moving guide device for a working unit according to an embodiment of the present invention is applied. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, a moving guide device for a working unit according to this embodiment will be described with reference to Fig. 1 to Fig. 5. In this embodiment, a film wrapping mechanism 1 that wraps a box-shaped product with film will be used as a mechanism that includes a working unit to which the moving guide device is applied.

[0015] As shown in Fig. 1, the film packaging mechanism 1 is a mechanism that includes multiple processes described below for packaging a packaged product 2 with a film 3. The film packaging mechanism 1 is provided with a film payout / cut process 11, a film body wrapping and sealing process 12, a flap expansion process 13, a fin welding process 14, a fin folding process 15, a flap folding process 16, and a flap bonding process 17 along the movement direction of a process movement mechanism 10 that transfers the packaged product 2 to each process in sequence. After going through the above processes, a packaged product 4 is supplied in which the packaged product 2 is wrapped in the film 3 in a desired configuration. The process movement mechanism 10 is composed of a known belt conveyor or the like. In addition, the direction in which the surfaces of the packaged product 2 on which the fins 141 and flaps 142 described later are formed faces is the X direction, the direction in which the packaged product 2 is transported by the process movement mechanism 10 is the Y direction, and the direction perpendicular to the X direction and the Y direction is the Z direction.

[0016] The packaged products 2 have a box-like outer shape that is long in the X direction, are intermittently supplied to the film packaging mechanism 1 at regular intervals, and are first transferred to the film feeding / cutting process 11. In the film feeding / cutting process 11, a film 3 of a length that can wrap the packaged products 2 is fed from a supply film 30 arranged perpendicular to the Y direction, and the lower end of the film 3 is pressed against the front side in the transfer direction of the surface of the packaged product 2 facing the Y direction. The film 3 extends from both ends of the packaged product 2 in the X direction, sufficiently longer than the length of the packaged product 2 in the X direction. Films 3 having the above-mentioned configuration are sequentially cut from a supply film 30 for packaged products 2 that are supplied intermittently, and the films 3 are wrapped around the surfaces of the packaged products 2 facing the Y and Z directions, forming a cylindrical shape with both ends of the packaged products 2 in the X direction open.

[0017] In the subsequent film wrapping and sealing process 12, the Y-direction ends of the film 3 wrapped around the Y-direction and Z-direction surfaces of the packaged product 2 are heat-sealed in the X-direction at the overlapping portions on the packaged product 2, forming a cylindrical wrapped package shape with open sides in the X-direction. The portions of the film 3 extending from both ends of the packaged product 2 in the X-direction are formed as film extensions 31, 31.

[0018] In the subsequent flap expansion process 13, a pair of opening / closing claws 131, 131 provided on a flap expansion unit 50 formed adjacently facing one of the film extension portions 31 in the film extension portions 31, 31 move simultaneously in synchronization with the packaged products 2 (perform a box motion) while being inserted into one of the adjacently facing film extension portions 31, and expand the film extension portion 31 to the left and right in the Y direction. Thereafter, by releasing the pair of opening / closing claws 131, 131 from the expanded film extension portion 31, a fin 141 facing in the Z direction from the film extension portion 31 and a pair of triangular flaps 142, 142 are formed. In the other film extending portion 31, a fin 141 and a pair of flaps 142, 142 are formed by a similar mechanism.

[0019] Each member provided in the movement guide device 5 will be described with reference to FIGS. The movement guide device 5 is provided as a movement guide device for a flap extension unit 50 applied in the flap extension process 13 shown in FIG. 2 to 4, the moving guide device 5 includes a moving body 51 and a moving guide member 52 along which the moving body 51 moves. The moving guide member 52 is formed in an annular shape. The moving body 51 is provided with a pair of opening / closing claws 131, 131 shown in FIG. 1 (not shown) and a mechanism for opening and closing the pair of opening / closing claws 131, 131, which constitute a flap extension unit 50 that performs flap extension on the film extension portion 31 that faces closely.

[0020] The movable body 51 is provided outside the ring of the movable guide member 52 and comprises a leading roller 53 that moves ahead in the movement direction, a trailing roller 54 that moves behind in the movement direction, an inner roller 55 (clamping roller) that is provided inside the ring of the movable guide member 52 and moves following either the leading roller 53 or the trailing roller 54, and a movable body frame 56 to which these rollers are attached.

[0021] In addition, the leading roller 53, the trailing roller 54, the inner roller 55 and the moving body frame 56 are joined by bolts. Note that as long as the moving body 51 can move smoothly on the moving guide member 52, the configuration is not limited to that of this embodiment.

[0022] The moving guide member 52 has the moving body 51 movably attached thereto, and includes a leading roller moving guide member 57 along the outside of the ring along which the leading roller 53 moves, and a trailing roller moving guide member 58 along the outside of the ring along which the trailing roller 54 moves. The leading roller movement guide member 57 has a leading roller movement path (first movement path) 570 formed outside the ring, the leading roller movement path (first movement path) 570 including straight portions (first sections) 52a, 52a and curved portions (second sections) 52b, 52b continuing from the straight portions 52a, 52a. The trailing roller movement guide member 58 has a trailing roller movement path (second movement path) 580 formed outside the ring, the trailing roller movement path (second movement path) 580 including straight portions (first sections) 52a, 52a and curved portions (second sections) 52b, 52b.

[0023] The method of connecting the leading roller movement guide member 57 and the trailing roller movement guide member 58 is not limited to a specific method as long as the moving body 51 can move smoothly. For example, in this embodiment, the leading roller movement guide member 57 and the trailing roller movement guide member 58 are joined at predetermined locations with bolts with the bolt heads embedded so as not to impede the movement of the moving body 51. Also, as long as the moving body 51 can move smoothly, the leading roller movement path 570 and the trailing roller movement path 580 may be formed in the same moving guide member.

[0024] In addition, in this embodiment, the movement path surfaces between the leading roller movement path 570 and the trailing roller movement path 580 and the contact surfaces between the leading roller 53 and the trailing roller 54 are formed smoothly, and the moving body 51 moves smoothly on the moving guide member 52.

[0025] Further, the leading roller movement guide member 57 and the trailing roller movement guide member 58 are each formed of a flattened ring-shaped (oval shape having straight portions 52a, 52a) plate-shaped member in the movement direction of the moving body 51. Note that the shape is not limited to that of this embodiment as long as the moving body 51 can move smoothly. For example, the leading roller movement guide member 57 and the trailing roller movement guide member 58 may be formed of one straight portion 52a and three curved portions 52b, 52b, 52b.

[0026] In this embodiment, the inner roller 55 moves following the leading roller 53. The leading roller movement guide member 57 is provided with an inner roller movement path 550 including inner straight portions 55a, 55a along which the inner roller 55 can move inside the ring, and inner curved portions 55b, 55b continuing from the inner straight portions 55a, 55a. Therefore, in this embodiment, the leading roller movement guide member 57 is configured so that the roller moves both inside and outside the ring. Note that the configuration of the moving body 51 is not limited to the present embodiment as long as it can perform the desired function. For example, the following roller movement guide member 58 may have a configuration in which the inner straight portions 55a, 55a and the inner curved portions 55b, 55b are provided inside the ring, the following roller movement guide member 58 has a roller moving both inside and outside the ring, and the inner roller 55 moves following the following roller 54.

[0027] As shown in FIG. 4(b), the leading roller 53 and the trailing roller 54 are arranged with their positions shifted in a direction perpendicular to the moving direction of the moving body 51. Note that the configuration of the moving body 51 is not limited to this embodiment as long as the moving guide device 5 can exhibit the desired performance. For example, the moving guide device 5 may be configured such that the leading roller 53 and the trailing roller 54 are provided inside the ring of the leading roller moving guide member 57 and the trailing roller moving guide member 58, and the inner roller 55 is provided outside the ring as the clamping roller 55, so that the rollers move continuously along each moving path while clamping the moving guide member 52.

[0028] As shown in Figs. 2 and 3, each of the leading roller movement guide member 57 and the following roller movement guide member 58 has four continuous portions 52c which are continuous and transitional portions between the straight portion 52a and the curved portion 52b.

[0029] Each continuous portion 52c formed on one roller movement guide member is provided with a distance of a movement path shape change start difference 59 from each continuous portion 52c provided at a corresponding position on the other roller movement guide member in the movement direction of the moving body 51. In this embodiment, the movement path shape change start difference 59 substantially coincides with the length between the rotation axes of the leading roller 53 and the trailing roller 54. With this configuration, when the leading roller 53 moves from the straight portion 52a to the curved portion 52b in the moving body 51, the trailing roller 54 moves from the straight portion 52a to the curved portion 52b at the same time. Similarly, when the leading roller 53 moves from the curved portion 52b to the straight portion 52a, they move at the same time. Therefore, when the moving body 51 moves from the straight portion 52a to the curved portion 52b or in the opposite direction, there is no vibration or rattling due to a change in the shape of the moving path between the straight portion 52a and the curved portion 52b, and the moving body 51 can move smoothly.

[0030] 3, the rotation center R of the curved portions 52b, 52b and the inner curved portions 55b, 55b of the leading roller movement guide member 57 is formed to be the same. The curvature radius of the curved portion 52b and the inner curved portion 55b of the leading roller movement guide member 57 is determined by the distance from the rotation center R of the curved portion 52b and the inner curved portion 55b to the roller rotation axis of the leading roller 53 and the inner roller 55, and the outer shape of the curved portion 52b is controlled. In addition, the configuration is not limited to this embodiment as long as the movable body 51 can exhibit the desired function. For example, the rotation centers R of the curved portion 52b of the leading roller movement guide member 57 and the curved portion 52b and the inner curved portion 55b of the trailing roller movement guide member 58 may be formed to be the same.

[0031] 1, the moving guide device 5 is provided at one end in the X direction of the packaged product 2 at an installation position where one straight portion 52a of the moving guide member 52 faces closely one film extending portion 31 so that a pair of opening and closing claws 131, 131 provided in the flap extending unit 50 perform box motion. Also, a moving guide device 5 with a similar configuration is provided at the other end in the X direction of the packaged product 2. In addition, a pair of opening / closing claws 131, 131 provided on the flap extension unit 50 are provided at the upper part of the movable body frame 56 in the Z direction, and a mechanism for opening and closing the pair of opening / closing claws 131, 131 (not shown) is also provided on the movable body frame 56.

[0032] The opening and closing claws 131 are formed of plate-like members elongated in the direction of insertion into the closely opposed film extension portions 31, and are formed so that the surfaces that adhere to the film 3 when the closely opposed film extension portions 31 are expanded as a pair of opening and closing claws 131, 131 are in close contact with the film 3. The movement of the flap extension unit 50 at this time is a movement on the straight portion 52a of the moving guide device 5 that closely faces the packaged product 2, and the movement speed is the same as the movement speed of the packaged product 2 by the process movement mechanism 10 and moves in synchronization. Therefore, the pair of opening and closing claws 131, 131 can expand the closely opposed film extension portions 31 while preventing damage to the film 3 due to the expanding operation.

[0033] The moving guide device 5 is provided with a rotation mechanism (not shown) that moves the moving body 51 on the moving guide member 52. The rotation mechanism (not shown) is not limited to a specific method as long as it is provided with a rotation mechanism (box motion mechanism) that drives the moving guide device 5 that moves the flap extension unit 50 that expands the closely facing film extension portion 31. For example, a known rotation mechanism using a metal chain may be provided, or the moving body 51 may be moved by a known belt conveyor or timing pulley.

[0034] In this embodiment, the movable bodies 51, 51 adjacent to the film extending portions 31, 31 respectively move in opposite directions on the movable guide members 52. In Fig. 1, the movable body 51 of the movable guide device 5 arranged on the rear side of the packaged product 2 in the X direction moves counterclockwise, and the movable body 51 of the movable guide device 5 arranged on the front side of the packaged product 2 in the X direction moves clockwise.

[0035] Furthermore, the movement guide devices 5, 5 adjacent to the film extending portions 31, 31, respectively, may be configured in consideration of the opposite movement directions of the above-mentioned moving bodies 51, 51. For example, in the moving body 51 adjacent to one film extending portion 31, the inner roller 55 moves inside the ring of the leading roller movement guide member 57, and in the moving body 51 adjacent to the other film extending portion 31, the inner roller 55 moves inside the ring of the trailing roller movement guide member 58.

[0036] In addition, the leading roller movement guide member 57 and the trailing roller movement guide member 58 provided in each of the movement guide devices 5, 5 are configured so that the continuous portions 52c are formed at predetermined positions with a gap of the movement path shape change start difference 59 between them, so that the leading roller 53 and the trailing roller 54 move simultaneously from the straight portion 52a to the curved portion 52b, or in the opposite direction, and therefore can move smoothly without vibration or rattling due to changes in the movement path shape between the straight portion 52a and the curved portion 52b. Therefore, the pair of opening / closing claws 131, 131 provided on the flap expansion unit 50 provided on the moving body 51 can expand the closely facing film extension portions 31 without vibration or rattle due to changes in the shape of the moving path during movement, so that the fins 141 and the pair of flaps 142, 142 can be formed from each of the film extension portions 31, 31 with the desired work precision without causing misalignment or gaps, etc. Therefore, quality problems such as an uncomfortable appearance of the packaged product 2 or the packaged product 4 and the intrusion of foreign matter into the interior can be prevented.

[0037] The above mechanism completes the flap expansion process 13, and the packaged product 2 changes from a state in which the film extension portions 31, 31 shown in Figure 5(a) are formed to a state in which a fin 141 and a pair of flaps 142, 142 are formed from each of the film extension portions 31, 31 as shown in Figure 5(b). From the above state, as shown in Fig. 1, in the subsequent fin welding process 14, the pair of fins 141, 141 are heat-sealed in the Z direction. In the subsequent fin folding up process 15, the pair of heat-sealed fins 141, 141 are folded up to face both end faces in the X direction of the packaged product 2. In the subsequent flap folding process 16, the pair of flaps 142, 142 formed on both ends facing the X direction of the packaged product 2 are folded up to face both end faces in the X direction of the packaged product 2. Through the above process, the film extensions 31, 31 are all folded onto both end faces in the X direction of the packaged product 2. In the subsequent flap bonding process 17, the pair of flaps 142, 142 folded onto each face are heat-sealed and fixed in the folded state. Through the above steps, a packaged product 4 is provided in which the product 2 is packaged in the film 3 with the desired quality.

[0038] Next, the operation and effect of the working unit movement guide device according to the embodiment of the present invention described above will be described with reference to FIGS.

[0039] As shown in Figures 1 to 3, one straight portion 52a faces closely to both of the film extension portions 31, 31 formed at both ends in the X direction of the packaged product 2 that has completed the film wrapping sealing process 12 and been transferred to the flap expansion process 13, and a flap expansion unit 50 is provided in close proximity to the moving guide devices 5, 5 equipped on the moving body 51. In one of the moving guide devices 5, the moving body 51 moves on the moving guide member 52 to reach the straight section 52a adjacent to one of the film extension parts 31, and inserts a pair of opening and closing claws 131, 131 provided on the flap extension unit 50 provided on the upper part of the moving body 51 in the Z direction into one of the adjacent and opposing film extension parts 31. With the pair of opening and closing claws 131, 131 inserted into one of the film extension parts 31, the moving body 51 moves along the straight section 52a adjacent to one of the film extension parts 31 in synchronization with the movement of the packaged product 2, so that the pair of opening and closing claws 131, 131 provided on the flap extension unit 50 expands one of the film extension parts 31. By expanding one of the film extension parts 31 to a desired position, a fin 141 and a pair of flaps 142, 142 are formed. In addition, as the movable body 51 moves from the straight portion 52a adjacent to and facing one of the film extension portions 31 to the curved portion 52b continuing in the moving direction of the movable body 51, the flap extension unit 50 detaches from both ends of the fin 141 in the Y direction.

[0040] By the above mechanism, the flap expansion process 13 of the packaged product 2 is completed, and the desired packaged configuration of the packaged product 2 shown in FIG. 5(b) is obtained. The packaged products 2 having fins 141 and a pair of flaps 142, 142 formed on both sides in the X direction are transferred to the next process by the process moving mechanism 10, and at the same time, packaged products 2 having film extensions 31, 31 formed on both ends in the X direction are sequentially transferred to the flap expanding process 13. In addition, the moving body 51 makes one revolution around the moving guide member 52 and moves again to the straight section 52a adjacent to and facing one of the film extensions 31, and repeats the same expanding operation for the packaged products 2 being sequentially transferred.

[0041] The above operation is simultaneously performed in the other movement guide device 5 adjacent to and facing the other film extending portion 31. By the above mechanism, the desired fin 141 and a pair of flaps 142, 142 are formed from each of the film extending portions 31, 31.

[0042] The above mechanism makes it possible to form the fins 141 and a pair of flaps 142, 142 with the desired quality at both ends of the packaged product 2 in the X direction without damaging the film 3, so that the desired work in the flap expansion process 13 can be completed and the packaged product 2 can be transported to the next process after the work has been completed.

[0043] In addition, in each moving body 51, the leading roller 53 and the trailing roller 54 can move simultaneously from the straight portion 52a to the curved portion 52b, or in the opposite direction, so that each moving body 51 can move smoothly between the straight portion 52a and the curved portion 52b without vibration or rattling due to changes in the shape of the moving path. Furthermore, with the above-mentioned configuration, the pair of opening / closing claws 131, 131 in each flap extension unit 50 can be moved without vibration or rattle, the adjacent film extension portions 31 can be expanded, and the fins 141 can be formed without misalignment or gaps, etc. Therefore, quality problems such as discomfort in the appearance of the packaged product 2 or the packaged product 4 and the intrusion of foreign matter into the interior can be prevented.

[0044] In addition, in each moving guide device 5, the leading roller 53, the trailing roller 54 and the inner roller 55 move while clamping the moving guide member 52, thereby preventing each roller from coming off the tracks, enabling the moving body 51 to move stably, and improving the accuracy of work performed by the flap extension unit 50.

[0045] In addition, in each moving guide member 52, the leading roller moving guide member 57 and the trailing roller moving guide member 58 are each formed from a flat annular plate-like member in the movement direction of the moving body 51, so that each moving guide device 5 can be provided in a small space.

[0046] Furthermore, since the leading roller movement guide member 57 and the trailing roller movement guide member 58 are formed from members of the same shape, the desired movement guide member 52 and movement guide device 5 can be easily constructed.

[0047] Although an embodiment of the working unit movement guide device according to the present invention has been described above, the present invention is not limited to the above embodiment and can be modified as appropriate without departing from the spirit of the present invention. For example, in the above embodiment, the moving guide device 5 is applied to the film packaging mechanism 1, but it may be applied to other working mechanisms that require a rotating mechanism (box motion mechanism). Also, in the above embodiment, each continuous portion 52c is formed as a continuous and changing portion between the straight portion 52a and the curved portion 52b, but the parts corresponding to these continuous portions 52c may be formed smoothly, and the moving path shape between the straight portion 52a and the curved portion 52b may be formed to be continuous with high accuracy. With the above configuration, it is possible to more efficiently eliminate vibrations and rattles during the movement of the moving body due to changes in the moving surface shape. [Explanation of symbols]

[0048] 1 Film wrapping mechanism 2 Packaged products 3. Film 4 Completed packaging product 5. Mobile guide device 10 Process movement mechanism 11 Film unwinding and cutting process 12 Film wrapping and sealing process 13 Flap expansion process 14 Fin welding process 15 Fin folding process 16 Flap folding process 17 Flap bonding process 30 Supply Film 31 Film extension 50 Flap extension unit (working unit) 51 Mobile 52 Moving guide member 52a Straight section (first section) 52b Curved section (second section) 52c Continuous section 53 Leading Roller 54 Trailing Roller 55 Inner roller (clamping roller) 55a Inner straight section 55b Inner curve 56 Mobile Frame 57 Leading roller movement guide member 58 Trailing roller movement guide member 59 Path shape change start difference 131 Opening and closing claw 141 Finn 142 Flap 550 Inner roller path 570 Leading roller path (first path) 580 Trailing roller path (second path) R Rotation center

Claims

1. a moving body frame to which a working unit can be attached; A leading roller that moves in advance and is provided on the moving body frame; A trailing roller that is provided on the moving body frame and moves in a trailing manner; A moving body having a leading roller movement guide member having a first movement path formed therein, the first movement path including a leading first section along which the leading roller moves and a leading second section continuous with the leading first section; a trailing roller movement guide member in which a second movement path is formed, the second movement path including a trailing first section along which the trailing roller moves and a trailing second section continuous with the trailing first section; A moving guide member having Equipped with The preceding first section and the preceding second section have different moving path shapes, and the following first section and the following second section have different moving path shapes, In a section of the movable guide member in which the working unit is driven, the leading roller moves from the leading first section to the leading second section, and at the same time, the trailing roller moves from the trailing first section to the trailing second section, The preceding roller movement guide member and the following roller movement guide member are arranged in a direction perpendicular to the moving direction of the moving body, When viewed from a direction perpendicular to the moving direction, the first moving path including the leading first section and the leading second section and the second moving path including the trailing first section and the trailing second section overlap each other over an entire length in the moving direction, The leading change section between the leading first section and the leading second section and the trailing change section between the trailing first section and the trailing second section are provided with a difference in the start of the change in the shape of the moving path corresponding to the length between the rotation axes of the leading roller and the trailing roller. A movement guide device for a working unit.

2. The preceding roller movement guide member and the following roller movement guide member each have an annular outer shape, are formed of a plate-like member, and are arranged in a direction perpendicular to the moving direction of the moving body. The movement guide device for a working unit according to claim 1 .

3. The preceding roller movement guide member is The preceding first section is formed in a straight line, and the preceding second section is formed in a curved annular shape, The trailing roller movement guide member is The trailing first section is formed in a straight line, and the trailing second section is formed in a curved annular shape, The preceding roller and the trailing roller are disposed on the same side of either the inside or the outside of the ring, and a pinching roller that can move following at least one of the preceding roller and the trailing roller is disposed on the other side, The leading second section and the trailing second section in which at least one of the leading roller and the trailing roller is arranged, and the annular section in which the pinch roller is arranged are formed with the same rotation center, and the radius of curvature is determined by the distance from the rotation center to the rotation axis of each roller.

3. A movement guide device for a working unit according to claim 1 or 2.

Images