Guide roller position switching device and guide roller position switching method, and film winding device

Abstract

To provide a turret type film winding device capable of achieving both of cutting a film well and avoiding interference of a take-out device with a guide roller.SOLUTION: A guide roller position switching device 5 according to the present invention comprises a guide roller unit 6 that changes the relative position of a guide roller 64 with respect to a turret mechanism 1 by operating an air cylinder 61, and a stopper unit 7 that regulates the position of the guide roller 64 that guides a film 150 toward a winding roll that has moved to a replacement position P2. By regulating the position of the guide roller 64 that guides the film 150, variations in the cutability of the film 150 caused by variations in the cut film span are suppressed. Furthermore, by adjusting the position of the guide roller 64 relative to the winding roll that has moved to the replacement position P2, concerns such as the take-out device interfering with the guide roller 64 during removal of the winding roll are eliminated.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a guide roller position switching device, a guide roller position switching method, and a film winding device. [Background technology]

[0002] BACKGROUND ART Conventionally, as a film winding device for winding up a film supplied from a previous process, a turret-type film winding device equipped with a turret mechanism in which a plurality of winding cores are replaceable has been known (for example, Patent Document 1).

[0003] Figure 12 is a schematic diagram showing a turret mechanism b and its surrounding area in a conventional, typical turret-type film winding device a, as viewed from a direction along the center line of the rotation center of the turret mechanism b (hereinafter referred to as the turret center O).

[0004] As shown in Figure 12, turret mechanism b has replaceable winding cores d1 and d2 mounted at positions spaced 180° apart in the circumferential direction (positions facing each other across turret center O). Turret mechanism b also has guide rollers e1 and e2 attached to each winding core d1 and d2, respectively. These guide rollers e1 and e2 guide film c toward winding roll f when winding roll f, formed by winding film c around winding cores d1 and d2, is moved downstream (to the discharge side) (see the state shown in Figure 12(c)). Film winding device a also has a cutting mechanism g for cutting film c during rewinding (when switching between winding cores d1 and d2).

[0005] As an outline of the operation of film winding device a, when the winding operation of film c begins, as shown in Figure 12(a), winding of film c begins around winding core d1 located upstream in the supply direction of film c (left side in Figure 12(a)). Note that in the state shown in Figure 12(a), a new winding core d2 on which film c is not wound is attached downstream of turret mechanism b (right side in Figure 12(a)).

[0006] Then, as shown in Fig. 12(b), when rewinding is required after a predetermined amount of film c has been wound around winding core d1, turret mechanism b is rotated around turret center O, so that winding roll f, which was located on the upstream side, moves downstream and winding core d2, which was located downstream, moves upstream, as shown in Fig. 12(c). At this time (before film c is cut), film c being fed toward winding roll f, which has moved downstream, is guided by guide roller e1.

[0007] Then, as shown in Figure 12(d), with the winding core d2 moved upstream and in contact with the touch roller h, the film c between the guide roller e1 and the touch roller h is cut by the cutting mechanism g. As a result, the film c downstream of the cutting position is taken up onto the winding roll f, and the winding roll f supplied from the previous process begins to be taken up by the winding core d2 moved upstream. After that, as shown in Figure 12(e), the turret mechanism b is further rotated so that the touch roller h, winding core d2, and winding roll f are aligned horizontally. While the winding of film c by the winding core d2 moved upstream continues, the winding roll f moved downstream is taken up by a take-out device (not shown). An example of a take-out device is one that approaches the winding roll f from below and supports the winding roll f from below as it is removed from the turret mechanism b. After the winding roll f is removed, a new winding core without film c wound on it is installed downstream of the turret mechanism b (see the state shown in Figure 12(a)). By repeating this operation, it becomes possible to continuously wind film c onto each of the winding cores d1 and d2 without stopping the supply of film c.

[0008] Note that the take-up roll f that has moved downstream due to the rotation of the turret mechanism b is not necessarily taken out by the take-out device when it moves downstream, but may move upstream again due to the rotation of the turret mechanism b, thereby winding up more film c. Hereinafter, this operation will be referred to as film rewinding, and this take-up roll will be referred to as the rewind roll. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Publication No. 2023-7179 Summary of the Invention [Problem to be solved by the invention]

[0010] In conventional film winding device a, the rotation axes of guide rollers e1 and e2 were fixed to turret mechanism b, so when turret mechanism b rotated, guide rollers e1 and e2 also moved (revolved) around turret center O by the same angle as the rotation angle. In other words, the angle (angle θ in FIG. 12(a)) formed by imaginary lines connecting turret center O and the central positions of winding cores d1 and d2 (lines i1 and i2 shown by dashed dotted lines in FIG. 12(a)) and imaginary lines connecting turret center O and the central positions of guide rollers e1 and e2 (lines j1 and j2 shown by dashed dotted lines in FIG. 12(a)) was fixed.

[0011] However, when the film c is cut by the cutting mechanism g, the rotation angle of the turret mechanism b when the cores d1, d2 and the additional roll are in contact with the touch roller h will vary depending on the outer diameter of the cores d1, d2 and the amount of film c taken up on the additional roll. This causes the length of the film c between the touch roller h and the guide roller e1 guiding the film c (hereinafter referred to as the cut film span: see fs in Figure 12(c)) to fluctuate, resulting in variations in the cuttability of the film c.

[0012] For example, Fig. 13 is a diagram corresponding to Fig. 12(c) when winding cores d3 and d4 with larger diameters than winding cores d1 and d2 shown in Fig. 12 are used, and Fig. 14 is a diagram corresponding to Fig. 12(c) when winding additional film onto additional roll f'. In this way, the cut film span fs varies depending on the outer diameter of the winding cores d3 and d4 and the amount of film c taken up on additional roll f', resulting in variations in the cuttability of film c.

[0013] To cut the film c well, it is preferable to set the length of the cut film span fs to be short and consistent. In other words, it is preferable to shorten the distance between the touch roller h and the guide roller e1. To achieve this, it is effective to reduce the angle θ.

[0014] However, if the angle θ is reduced, as shown in Fig. 12(e), the guide roller e2 will be located below the winding roll f when the winding roll f is being taken out, which may cause the take-out device to interfere with the guide roller e2. Therefore, in order to avoid this interference, the take-out operation using the take-out device becomes complicated and requires a high level of skill from the worker performing the take-out operation, which is a problem.

[0015] As such, there is a trade-off between successfully cutting the film c and avoiding interference with the guide roller e2 of the take-out device, and no proposals have been made to solve this problem until now.

[0016] The present invention has been made in consideration of the above points, and its purpose is to provide a guide roller position switching device, a guide roller position switching method, and a film winding device in a turret-type film winding device that can achieve both good film cutting and avoiding interference with the guide rollers of the take-out device. [Means for solving the problem]

[0017] The solution to achieve the above object of the present invention is a guide roller position switching device for a turret-type film winding device that includes a turret mechanism with multiple replaceable winding cores, a touch roller that contacts a take-up roll formed by winding a film onto an upstream core of the multiple winding cores when the film is being wound onto the upstream core, guide rollers that are provided corresponding to each of the winding cores and guide the film toward the take-up roll when the turret mechanism rotates to move the take-up roll, with a predetermined amount of film wound onto the upstream core, downstream, and a cutting unit that cuts the film span between the touch roller and the guide roller guiding the film when switching the winding core onto which the film is being wound.The guide roller position switching device is characterized by being configured to change the relative position of each guide roller with respect to the turret mechanism.

[0018] This feature allows the guide roller position switching device to change the position of the guide roller (relative to the turret mechanism) when the cutting unit cuts the film span between the touch roller and the guide roller during rewinding. This allows the length of the film (the cut film span) between the touch roller and the guide roller (the guide roller guiding the film) to be adjusted to the desired length by adjusting the position of the guide roller according to the outer diameter of the winding core and the amount of film wound on the top-up roll. This reduces variations in the film cuttability caused by variations in the cut film span. Furthermore, even when unwinding the winding roll, the guide roller position switching device changes the position of the guide roller, eliminating the possibility of the guide roller being positioned near the winding roll and eliminating the risk of the unwinding device interfering with the guide roller. In this way, this solution allows for both good film cutting and avoiding interference of the unwinding device with the guide roller.

[0019] Furthermore, in the guide roller position switching device, it is preferable that the larger the outer diameter dimension of the core moved upstream by the rotation of the turret mechanism, the larger the angular interval between the center position of the core and the center position of the guide roller guiding the film around the rotation center of the turret mechanism is set.

[0020] As shown in Figure 13 above, the larger the outer diameter of the winding core that has moved upstream due to the rotation of the turret mechanism, the closer the rotation position of the turret mechanism will be to the guide roller when the winding core contacts the touch roller, compared to when the outer diameter of the winding core is small. In other words, in conventional technology, the length of the film between the touch roller and the guide roller (the cut film span) varies depending on the outer diameter of the winding core, which can result in variations in the cuttability of the film. In view of this, in this solution, the larger the outer diameter of the winding core that has moved upstream, the larger the angular interval between the center position of the winding core around the rotation center of the turret mechanism and the center position of the guide roller that guides the film is set, thereby suppressing variations in the cut film span and thereby suppressing variations in the cuttability of the film.

[0021] Furthermore, in the guide roller position switching device, when the winding roll that has moved downstream due to the rotation of the turret mechanism is moved back upstream to perform additional winding, the larger the outer diameter of the winding roll that has moved upstream, the larger the angular interval set between the center position of the winding roll around the rotation center of the turret mechanism and the center position of the guide roller that is guiding the film.

[0022] As shown in Figure 14, the larger the outer diameter of the take-up roll (addition roll) that moves upstream as the turret mechanism rotates, the closer the guide roller will be to the rotation position of the turret mechanism when the take-up roll contacts the touch roller, compared to when the outer diameter of the take-up roll is small. In other words, in prior art, even when adding film to the take-up roll, the length of the film between the touch roller and the guide roller (the cut film span) varies depending on the outer diameter of the take-up roll, which can result in variations in the cuttability of the film. In view of this, in this solution, the larger the outer diameter of the take-up roll that moves upstream, the larger the angular distance between the center position of the take-up roll around the rotation center of the turret mechanism and the center position of the guide roller that guides the film is set to be, thereby suppressing variations in the cut film span and thereby suppressing variations in the cuttability of the film.

[0023] Furthermore, the guide roller position switching device preferably includes a first actuator that changes the position of each of the guide rollers, and a second actuator that moves a stopper member that regulates the position of the guide rollers that guide the film, and the first actuator is attached to the turret mechanism, while the second actuator is attached to an apparatus main body that rotatably supports the turret mechanism.

[0024] Because each guide roller rotates integrally with the turret mechanism, the first actuator, which changes the position of these guide rollers, needs to be attached to the turret mechanism, but there is no such requirement for the second actuator, which moves the stopper member. Therefore, in this solution, the second actuator is attached to the device body (the device body that rotatably supports the turret mechanism). Generally, when an actuator is attached to a rotating body, a slip ring must be provided in the electrical system of a switching device, such as an electromagnetic valve, for switching the rotation direction, which can lead to a complex configuration. However, in this solution, the second actuator, which moves the stopper member that does not need to rotate integrally with the turret mechanism, is attached to the device body (a non-rotating member). This simplifies the configuration while still allowing the stopper member to be moved smoothly by the operation of the second actuator.

[0025] Furthermore, in the guide roller position switching device, when the winding roll that has moved downstream due to the rotation of the turret mechanism is taken out by the take-out device, the angular interval between the center position of the winding roll around the center of rotation of the turret mechanism and the center position of the guide roller that is located on the approach side of the take-out device relative to the winding roll is set to be large, and the guide roller is displaced in a direction that moves it away from the movement trajectory of the take-out device.

[0026] As described above, when the winding roll is being unloaded, if a guide roller is located near the winding roll (for example, below the winding roll), there is a concern that the unloading device may interfere with the guide roller. In view of this, the present solution displaces the guide roller in a direction that retracts it from the movement trajectory of the unloading device when the winding roll is being unloaded, thereby making it possible to prevent the unloading device from interfering with the guide roller.

[0027] The technical concept of the present invention also encompasses a guide roller position switching method implemented by the guide roller position switching device. That is, the present invention covers a guide roller position switching method for switching the position of the guide roller in a turret-type film winding device that includes a turret mechanism with multiple replaceable winding cores, a touch roller that contacts a take-up roll formed by winding a film onto a winding core that is located upstream in the film supply direction of the multiple winding cores, guide rollers that are provided corresponding to each winding core and guide the film toward the winding roll when the winding roll, with a predetermined amount of film wound onto the upstream winding core, is moved downstream by the rotation of the turret mechanism, and a cutting unit that cuts the film span between the touch roller and the guide roller guiding the film when switching the winding core onto which the film is wound. This guide roller position switching method defines a target position for the guide roller that guides the film, and when the take-up device takes out the winding roll that has moved downstream due to the rotation of the turret mechanism, defines a target position for the guide roller in a direction that moves it away from the movement trajectory of the take-up device, and controls the guide roller to restrict or move to each target position.

[0028] This feature also reduces variations in the cutting performance of the film due to variations in the cut film span, and eliminates concerns that the take-out device may interfere with the guide roller when the take-up roll is being taken out, making it possible to achieve both good cutting of the film and avoiding interference of the take-out device with the guide roller.

[0029] The technical concept of the present invention also encompasses a film winding device equipped with the above-described guide roller position switching device. That is, the film winding device is characterized by being equipped with the guide roller position switching device, and configured to adjust the position of the guide roller that guides the film, and to adjust the position of the guide roller in a direction away from the movement trajectory of the take-out device when the take-out device takes out the take-up roll that has moved downstream due to the rotation of the turret mechanism.

[0030] This specific feature makes it possible to provide a film winding device that can achieve the aforementioned effects of both effectively cutting the film and avoiding interference with the guide roller of the take-out device. [Effects of the Invention]

[0031] In this invention, the relative position of each guide roller provided for each core in a turret-type film winding device with respect to the turret mechanism is variable. This configuration suppresses variations in film cutting performance resulting from variations in the cut film span and eliminates concerns that the take-out device may interfere with the guide rollers when the winding roll is being taken out. This allows for both good film cutting and avoiding interference of the take-out device with the guide rollers. [Brief explanation of the drawings]

[0032] [Figure 1] FIG. 2 is a schematic diagram showing a turret mechanism and its surroundings in the film winding device according to the embodiment, illustrating the state at the start of film winding. [Figure 2] 2 is a view taken along the arrow II in FIG. 1, showing the periphery of the guide roller position switching device. [Figure 3] FIG. 10 is a diagram showing a state at the start of rewinding. [Figure 4] FIG. 10 is a diagram showing a state when the touch roller is detached. [Figure 5]10A and 10B are diagrams illustrating a guide roller position regulation state. [Figure 6] FIG. 10 is a diagram showing a state in which the film is being prepared for cutting. [Figure 7] FIG. 10 is a diagram showing the state at the time of contact of the touch roller. [Figure 8] FIG. 10 is a diagram showing the state at the time of cutting the film. [Figure 9] FIG. 10 is a diagram showing a state when the winding roll is removed. [Figure 10] FIG. 10 is a diagram showing the state at the time of contact of the touch roller when a large-diameter core is used. [Figure 11] 10A and 10B are diagrams illustrating the state at the time of contact of the touch roller when film rewinding is performed. [Figure 12] These figures show an outline of the operation of a film winding device according to prior art, in which (a) shows the state when film winding begins, (b) shows the state when rewinding begins, (c) shows the state after the turret mechanism has rotated, (d) shows the state at the time the film is cut, and (e) shows the state when the winding roll is removed. [Figure 13] FIG. 12(c) shows a conventional film winding device using a large-diameter winding core. [Figure 14] FIG. 12(c) is a diagram illustrating a case where film is rewound in a film winding device according to the prior art. DETAILED DESCRIPTION OF THE INVENTION

[0033] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the present invention will be described as being applied to a tape winding system in which a film is wound around a core by applying an adhesive treatment such as an adhesive tape to the outer peripheral surface of the core. Note that the present invention can also be applied to an electrostatic winding system in which a film is wound around a core using static electricity.

[0034] -Outline of film winding device- First, the schematic configuration of the film winding device according to this embodiment will be described. FIG. 1 is a schematic diagram showing a turret mechanism 1 and its surroundings in a film winding device 100 according to this embodiment. In FIG. 1, the Y1 direction is the upstream side (the upstream side in the supply direction of the film 150), the Y2 direction is the downstream side (the downstream side in the supply direction of the film 150), the X1 direction is the left side of the film winding device 100, the X2 direction is the right side of the film winding device 100, the Z1 direction is the upper side (the upper side in the vertical direction), and the Z2 direction is the lower side (the lower side in the vertical direction). Furthermore, while FIG. 1 shows the configuration of the turret mechanism 1 and its surroundings on one side (e.g., the left side) in the left-right direction of the film winding device 100, the turret mechanism 1 and its surroundings on the other side (e.g., the right side) have a similar configuration.

[0035] Film winding device 100 winds up film 150 supplied from a previous process on the upstream side (Y1 direction side), and is configured to be able to switch between winding cores 81, 82 around which film 150 is wound.

[0036] Film 150 is, for example, a strip-shaped film made of resin, and has a wide width (for example, 4400 mm). The thickness and material of film 150 can be changed, and film winding device 100 can wind up films 150 of different thicknesses and materials.

[0037] Furthermore, film winding device 100 is configured to be able to wind up film 150 at high speed (for example, 200 m / min). Winding modes in film winding device 100 include upper winding, in which the bottom surface of supplied film 150 is wound so that it is positioned on the inside of the winding roll (a winding roll formed by winding a film around a core), and lower winding, in which the top surface of supplied film 150 is wound so that it is positioned on the inside of the winding roll. In this embodiment, the case where upper winding is performed will be described as an example.

[0038] The film winding device 100 includes a turret mechanism 1, a touch roller unit 2, a plurality of transport rollers 3, 3, a cutting unit 4, and a guide roller position switching device 5.

[0039] (Turret mechanism) The turret mechanism 1 has a substantially rectangular turret plate 11 that can rotate around a horizontal axis (around turret center O) by receiving driving force from a power source (such as an electric motor) not shown. The turret plate 11 may also be circular. Removable winding cores 81, 82 are mounted on the turret plate 11 at positions (opposite positions across the turret center O) spaced 180° apart in the rotation direction. These winding cores 81, 82 are mounted on a rotating shaft provided on the turret plate 11 and rotate integrally with this shaft, thereby enabling the film 150 to be wound. The centers of the turret plates 11 of the turret mechanisms 1 disposed on both the left and right sides of the film winding device 100 are connected by a cylindrical connecting shaft 12, the central axis of which corresponds to the turret center O. In this way, the left and right turret plates 11 are connected to each other by the connecting shaft 12, so that these turret plates 11 can rotate synchronously. However, the configuration that allows the turret plates 11 to rotate synchronously is not limited to this.

[0040] In the turret mechanism 1, the turret plate 11 rotates 180° around the turret center O, allowing each of the winding cores 81, 82 to move (revolve around the turret center O) between a state in which one winding core 81 is located at a winding position P1 and the other winding core 82 is located at a replacement position P2, and conversely, a state in which one winding core 81 is located at a replacement position P2 and the other winding core 82 is located at the winding position P1. The winding position P1 is an upstream position in the supply direction of the film 150, and is a position for winding the film 150 onto the winding core 81 (82). The replacement position P2 is a downstream position in the supply direction of the film 150, and is a position for removing the winding roll 200 (see FIG. 9) formed by winding the film 150 onto the winding core 81 (82), or a position where the winding roll is on standby for additional film winding.

[0041] (Touch roller unit) The touch roller unit 2 includes a touch roller 21, an arm (simply shown by a dashed line in FIG. 1) 22, and a power source (for example, an electric motor, etc.) not shown. The touch roller 21 is rotatably supported at the tip end (the lower end in the state shown in FIG. 1) of the arm 22. The base end (the upper end in the state shown in FIG. 1) of the arm 22 is connected to the power source and is able to rotate about a horizontal axis by receiving power from this power source. As the arm 22 rotates, the touch roller 21 can move toward or away from the outer peripheral surface of the winding core 81 or winding roll located at winding position P1.

[0042] (Transport roller) The conveying rollers 3, 3 are provided to convey the film 150 supplied from the upstream side via the touch roller 21 toward the winding core 81 located at the winding position P1 or toward the winding roll in the middle of winding at the winding position P1.

[0043] These transport rollers 3, 3 and touch roller unit 2 are rotatably supported by a sliding device (not shown) of the film winding device 100. The sliding device is movable along the Y1 and Y2 directions, and slides in the Y1 direction according to the amount of film 150 wound around the winding core 81 located at winding position P1 (the outer diameter of the winding roll), thereby maintaining a constant relative position of the transport rollers 3, 3 and touch roller unit 2 with respect to the outer peripheral surface of the winding roll.

[0044] (Cutting unit) Cutting unit 4 is provided to cut film 150 during rewinding (when the core around which film 150 is wound is switched from one core 81 to the other core 82).

[0045] The cutting unit 4 includes a first arm 41, a second arm 42, and a cutting blade 43. In Fig. 1, the arms 41 and 42 are simply indicated by dashed lines.

[0046] One end of first arm 41 is rotatably supported on the main body (device main body) of film winding device 100. One end of second arm 42 is rotatably supported on the other end of first arm 41. Cutting blade 43 is attached to the other end of second arm 42. The position of cutting unit 4 shown in FIG. 1 is a standby position, which is a position in which film 150 is not being cut (see FIG. 8 for the state in which film 150 is being cut) and is not being prepared for cutting (see FIG. 6 for the state in which film 150 is being prepared for cutting). When film 150 is to be cut, first arm 41 rotates clockwise as indicated by arrow A in the figure, and second arm 42 rotates counterclockwise as indicated by arrow B in the figure, causing cutting blade 43 to cut the cut film span between touch roller 21 and guide roller 64, which guides film 150 (see FIG. 8). The cutting unit 4 is of a guillotine type, in which a cutting blade 43 having a length equivalent to the width dimension of the film 150 is pressed against the film 150 to cut the film 150 .

[0047] (Guide roller position switching device) Next, the guide roller position switching device 5 will be described. Fig. 2 is a view taken along arrow II in Fig. 1, showing the periphery of the guide roller position switching device 5 (one guide roller unit 6A of a pair of guide roller units 6A, 6B, which will be described later, and a stopper unit 7). As shown in Figs. 1 and 2, the function of the guide roller position switching device 5 is to change the relative position of the guide roller 64 with respect to the turret mechanism 1.

[0048] The guide roller position switching device 5 is configured to include a guide roller unit 6 that supports the guide roller 64 and changes the position of the guide roller 64, and a stopper unit 7 that regulates the position of the guide roller 64. The guide roller unit 6 and the stopper unit 7 will be described below.

[0049] <Guide roller unit> The guide roller unit 6 has a first guide roller unit 6A provided corresponding to the core 82 and a second guide roller unit 6B provided corresponding to the core 81. The first guide roller unit 6A is provided to change the position of the guide roller 64 that guides the film 150 toward the take-up roll formed by winding the film 150 around the core 82 when the take-up roll is moved to the replacement position P2. As shown in FIG. 5 , the second guide roller unit 6B is provided to change the position of the guide roller 64 that guides the film 150 toward the take-up roll 200 when the take-up roll 200 formed by winding the film 150 around the core 81 is moved to the replacement position P2. Because the guide roller units 6A and 6B have the same configuration, the first guide roller unit 6A will be described here as an example. In the drawings, components of the second guide roller unit 6B that are the same as those of the first guide roller unit 6A are designated by the same reference numerals.

[0050] The first guide roller unit 6A includes an air cylinder 61 (a first actuator in the present invention), a first arm 62, a second arm 63, and a guide roller 64.

[0051] The air cylinder 61 includes a cylinder body 61a and a piston rod 61b that moves forward and backward relative to the cylinder body 61a. An air chamber (not shown) is provided inside the cylinder body 61a, and the piston rod 61b moves forward and backward according to the air pressure supplied to the air chamber. The cylinder body 61a is rotatably supported by a support member 13 fixed to the turret plate 11.

[0052] Shaft support brackets 14, 14 are bolted to the outer circumferential surface of the connecting shaft 12. A support shaft 65 is bridged between the shaft support brackets 14, 14 of each of the pair of left and right guide roller units 6.

[0053] One end of a first arm 62 is rotatably connected to the tip of the piston rod 61b, and the other end of the first arm 62 is connected to a support shaft 65. One end of a second arm 63 is also connected to the support shaft 65, so that as the piston rod 61b moves back and forth, the first arm 62 and the second arm 63 rotate in conjunction with the rotation of the support shaft 65. A guide roller 64 is rotatably supported on the other end of the second arm 63.

[0054] Therefore, as the piston rod 61b moves back and forth, the first arm 62 and the second arm 63 rotate, allowing the guide roller 64 to change its position around the center of the support shaft 65, which is the center of rotation of the second arm 63.

[0055] Specifically, in the first guide roller unit 6A located on the Z1 direction side in Fig. 1, as the amount of protrusion of the piston rod 61b decreases, the second arm 63 rotates counterclockwise in Fig. 1, and the position of the guide roller 64 in this case moves closer to the touch roller 21. Conversely, as the amount of protrusion of the piston rod 61b increases, the second arm 63 rotates clockwise in Fig. 1, and the position of the guide roller 64 in this case moves farther away from the touch roller 21.

[0056] 1, as the amount of protrusion of the piston rod 61b decreases, the second arm 63 rotates counterclockwise in Fig. 1, and the position of the guide roller 64 in this case moves closer to the winding core 82 (or the winding roll formed by winding the film 150 around the winding core 82) located at replacement position P2. Conversely, as the amount of protrusion of the piston rod 61b increases, the second arm 63 rotates clockwise in Fig. 1, and the position of the guide roller 64 in this case moves farther away from the winding core 82 (or the winding roll formed by winding the film 150 around the winding core 82) located at replacement position P2.

[0057] A stopper receiving portion 66 is attached to the side surface of the second arm 63 by means of bolts or the like. This stopper receiving portion 66 is provided to restrict the rotational position of the second arm 63 by abutting against a stopper member 72 of the stopper unit 7 (described later) (see the state shown in FIG. 5), thereby restricting the position of the guide roller 64.

[0058] <Stopper unit> The stopper unit 7 is a unit that regulates the position of the guide roller 64 that guides the film 150. In other words, this stopper unit 7 is provided to regulate the position of the guide roller 64 in the guide roller unit 6 that is located on the Z1 direction side in FIG. 1 (see the state shown in FIG. 5). The stopper units 7 are disposed on both the left and right sides of the film winding device 100. Because each stopper unit 7 has the same configuration, the following explanation will be given taking one of the stopper units 7 (the stopper unit 7 disposed on the left side of the film winding device 100 as shown in FIG. 1) as an example.

[0059] The stopper unit 7 includes an air cylinder 71 (a second actuator in the present invention) and a stopper member 72.

[0060] The air cylinder 71 includes a cylinder body 71a and a piston rod 71b that advances and retreats relative to the cylinder body 71a. An air chamber (not shown) is provided inside the cylinder body 71a, and the piston rod 71b advances and retreats in response to air pressure supplied to the air chamber. The cylinder body 71a is rotatably supported by a support member 111 fixed to a device body 110 that rotatably supports the turret mechanism 1.

[0061] One end of a stopper member 72 is rotatably connected to the tip of the piston rod 71b. The stopper member 72 is rotatably supported at its longitudinal center by a support member 112 fixed to the device main body 110. This allows the stopper member 72 to rotate around the support member 112 as the rotation center as the piston rod 71b moves back and forth. A stopper 73 that can abut against the stopper receiver 66 is attached to the tip of the stopper member 72 by means of bolts or other means. As shown in FIG. 2, the position of the stopper 73 in the left-right direction of the film winding device 100 is the same as the position of the stopper receiver 66 in the left-right direction of the film winding device 100.

[0062] 1, when the piston rod 71b is retracted (when the amount of protrusion is small), the stopper member 72 is in a posture (a jumped-up posture) in which it extends horizontally. In this case, the stopper 73 of the stopper member 72 is positioned outside the movement trajectory of the stopper receiving portion 66 when the turret mechanism 1 turns, and the stopper 73 does not come into contact with the stopper receiving portion 66 when the turret mechanism 1 turns.

[0063] On the other hand, as shown in Figure 5, when the piston rod 71b is protruded (the amount of protrusion is large), the stopper member 72 is in a position extending along the vertical direction. In this case, the stopper 73 of the stopper member 72 is located on the movement path of the stopper receiving portion 66 when the turret mechanism 1 is turned, and when the stopper receiving portion 66 moves toward this stopper 73, the stopper receiving portion 66 comes into contact with the stopper 73. This restricts the position of the guide roller 64. In this way, since the position of the guide roller 64 is restricted by the stopper 73, it is possible to restrict the position of the guide roller 64 to a predetermined position regardless of the turning position of the turret mechanism 1.

[0064] -Film winding operation- Next, the film winding operation by the film winding device 100 configured as described above will be described.

[0065] 1 (a diagram showing the state at the start of film winding), when the winding operation of film 150 begins, winding of film 150 onto winding core 81 begins with the rotation of winding core 81, which is located at winding position P1 (upstream in the supply direction of film 150: left side in FIG. 1). In the state shown in FIG. 1, a new winding core 82 on which film 150 is not wound is installed at replacement position P2 (downstream in the supply direction of film 150: right side in FIG. 1).

[0066] In this state, the amount of protrusion of the piston rod 71b in the air cylinder 71 of the stopper unit 7 is reduced, and the stopper member 72 is in a position (a jumped-up position) extending along the horizontal direction.

[0067] 3 (a diagram showing the state at the start of rewinding), when rewinding is to be performed after a predetermined amount of film 150 has been wound around core 81, arm 22 of touch roller unit 2 rotates (see arrow) to cause touch roller 21 to retreat from take-up roll 200, as shown in FIG. 4 (a diagram showing the state when touch roller 21 is detached). In this state, turret mechanism 1 rotates to start rewinding.

[0068] At this time, as shown in FIG. 4, the protrusion amount of the piston rod 71b of the air cylinder 71 of the stopper unit 7 is increased, and the stopper member 72 is set in a position extending along the vertical direction.

[0069] Here, we will explain the positional relationship between the touch roller 21 and the guide roller 64 depending on the outer diameter of the winding core 82. As described above with reference to Figure 13, in the prior art, the larger the outer diameter of the winding core d3 that moves to the winding position by the rotation of the turret mechanism b, the more the rotation position of the turret mechanism b when the winding core d3 comes into contact with the touch roller h will be such that the guide roller e1 is closer to the touch roller h than when the outer diameter of the winding core is small. In other words, in the prior art, the cut film span fs (see Figure 12(c)) varies depending on the outer diameter of the winding core d3, causing variations in the cuttability of the film c.

[0070] Taking this into consideration, in this embodiment, the position of guide roller 64 is restricted by stopper member 72 (more specifically, stopper 73), so that the position of guide roller 64 is restricted to a predetermined position regardless of the rotational position of turret mechanism 1. FIG. 7 shows a state in this embodiment in which touch roller 21 contacts winding core 82 via film 150, and FIG. 10 shows a state in which touch roller 21 contacts winding core 84 via film 150 when large-diameter winding cores 83, 84 are used. As described above, the rotational position of turret mechanism 1 when touch roller 21 contacts winding core 84 via film 150 differs between when the outer diameters of winding cores 83, 84 are large and when the outer diameters of winding cores 81, 82 are small. In this embodiment, even when the rotational position of turret mechanism 1 differs, the position of guide roller 64 is restricted by stopper 73 so that the film span (cut film span) FS between touch roller 21 and guide roller 64 guiding film 150 remains substantially constant (substantially the same). In other words, the film span FS between the touch roller 21 and the guide roller 64 is kept approximately constant regardless of the outer diameter of the core. In this case, the angle θ2 in Fig. 10 is set larger than the angle θ1 in Fig. 7, so that the film span FS is kept approximately constant. This type of operation corresponds to what is said in the present invention: "The larger the outer diameter of the core that has moved upstream due to the rotation of the turret mechanism, the larger the angular interval set between the center position of that core around the rotation center of the turret mechanism and the center position of the guide roller that is guiding the film."

[0071] The same principle applies when film rewinding is performed, in that the position of the guide roller 64 is regulated by the stopper 73 to keep the film span FS approximately constant. FIG. 11 shows the state in which the touch roller 21 contacts the rewinding roll 210 via the film 150 when film rewinding is performed. As described above, the pivot position of the turret mechanism 1 when the touch roller 21 contacts the rewinding roll 210 or the rewinding core 82 via the film 150 differs between when film rewinding is performed (the case shown in FIG. 11) and when film rewinding is not performed (when film 150 is wound around a new rewinding core: the case shown in FIG. 7). In this embodiment, even in such a case, the position of the guide roller 64 is regulated by the stopper 73 so that the film span FS between the touch roller 21 and the guide roller 64 guiding the film 150 is kept approximately constant (substantially the same). In other words, the film span FS between the touch roller 21 and the guide roller 64 is kept approximately constant regardless of the outer diameter of the rewinding roll 210. In this case, the angle θ3 in Fig. 11 is set larger than the angle θ1 in Fig. 7, and the film span FS is kept substantially constant. This type of operation corresponds to what is said in the present invention: "When the take-up roll, which has been moved downstream by the rotation of the turret mechanism, is moved upstream again to add more winding, the larger the outer diameter of the take-up roll that has been moved upstream, the larger the angular interval set between the center position of the take-up roll around the rotation center of the turret mechanism and the center position of the guide roller that guides the film."

[0072] With the posture of the stopper member 72 regulated as shown in Figure 4, when the turret mechanism 1 is rotated a predetermined amount, the stopper receiving portion 66 will come into contact with the stopper 73 as shown in Figure 5 (a diagram showing the guide roller position regulated state), thereby regulating the position of the guide roller 64.

[0073] As a result of this rotation of the turret mechanism 1, the take-up roll 200, which was located at the winding position P1, moves to the replacement position P2, and the winding core 82, which was located at the replacement position P2, moves to the winding position P1. As shown in Fig. 5, the film 150 supplied toward the take-up roll 200 that has moved to the replacement position P2 is guided by the guide roller 64 of the second guide roller unit 6B. Note that in the state shown in Fig. 5, the first guide roller unit 6A, which has moved downward due to the rotation of the turret mechanism 1, has the piston rod 61b of the air cylinder 61 protrude more, and the second arm 63 rotates clockwise in Fig. 5. As a result, the position of the guide roller 64 moves away from the take-up roll 200, which is located at the replacement position P2.

[0074] 6 (a diagram showing the film cutting preparation state), first arm 41 of cutting unit 4 rotates clockwise as shown by arrow A in the figure, thereby preparing to cut film 150 with cutting blade 43. In other words, film 150 can be cut simply by rotating second arm 42 counterclockwise as shown by arrow B in FIG.

[0075] 7 and 8 show the operation of bringing film 150 into contact with winding core 82 and the operation of cutting film 150. As described above, film winding device 100 according to this embodiment uses a tape winding method, and therefore the operation of bringing film 150 into contact with winding core 82 and the operation of cutting film 150 are performed approximately simultaneously, or the operation of cutting film 150 is performed slightly later than the operation of bringing film 150 into contact with winding core 82.

[0076] 7, arm 22 of touch roller unit 2 rotates (see arrow), causing touch roller 21 to advance toward core 82 and press film 150 against core 82. Then, as shown in FIG. 8, second arm 42 of cutting unit 4 rotates counterclockwise as shown by arrow B in the figure, thereby cutting film 150. As a result, film 150 downstream of the cutting position is taken up onto take-up roll 200 located at replacement position P2, and film 150 supplied from the previous process begins to be taken up by core 82 located at take-up position P1.

[0077] Thereafter, as shown in FIG. 9, the turret mechanism 1 is rotated slightly further to position the touch roller 21, the winding core 82, and the winding roll 200 in a horizontal alignment, and while the winding of the film 150 continues around the winding core 82 that has moved to the winding position P1, the winding roll 200 that has moved to the replacement position P2 is removed by a removal device (not shown).

[0078] At this time, as described above, the protrusion amount of the piston rod 61b of the air cylinder 61 of the first guide roller unit 6A increases, and the position of the guide roller 64 is moved away from the winding roll 200, which is located at the replacement position P2. In other words, the guide roller 64 is retracted from below the winding roll 200. The take-out device approaches the winding roll 200 from below and supports the winding roll 200 from below as it is removed from the turret mechanism 1. However, because the guide roller 64 is retracted from below the winding roll 200, there is no risk of the take-out device interfering with the guide roller 64.

[0079] After take-up roll 200 is removed, a new core without film 150 wound thereon is attached to replacement position P2 of turret mechanism 1. By repeating this operation, film 150 is continuously wound onto each of cores 81, 82 without interrupting the supply of film 150.

[0080] -Effects of the embodiment- As described above, in this embodiment, when the cutting unit 4 cuts the film span FS between the touch roller 21 and the guide roller 64 (the guide roller 64 guiding the film 150) during rewinding, the guide roller position switching device 5 changes the position of the guide roller 64 relative to the turret mechanism 1, making it possible to adjust the length of the film 150 between the touch roller 21 and the guide roller 64 (the cut film span) to a desired length. This reduces variations in the cuttability of the film 150 due to variations in the cut film span. Furthermore, even when the take-up roll 200 is unwound, the guide roller position switching device 5 changes the position of the guide roller 64, preventing the guide roller 64 from being positioned near the take-up roll 200, eliminating concerns that the take-up device will interfere with the guide roller 64. In this way, this embodiment can achieve both good cutting of the film 150 and avoiding interference of the take-up device with the guide roller 64.

[0081] Also, in the present invention, the air cylinder 71 of the stopper unit 7 is attached to the device body 110 (the device body that rotatably supports the turret mechanism 1). Generally, when an actuator such as the air cylinder 71 is attached to a rotating body, it is necessary to provide a slip ring in the electrical system of a switching means such as an electromagnetic valve for switching the rotation direction, which may lead to a complicated configuration. However, in this embodiment, by attaching the air cylinder 71 for moving the stopper member 72, which does not need to rotate integrally with the turret mechanism 1, to the device body 110, it is possible to smoothly move the stopper member 72 by operating the air cylinder 71 while simplifying the configuration.

[0082] -Other embodiments- The present invention is not limited to the above-described embodiments, and all modifications and applications within the scope of the claims and equivalents thereto are possible.

[0083] For example, in the above embodiment, the case where film 150 is wound up on the top side has been described as an example, but the above-described effects can be achieved by a similar operation even when film 150 is wound up on the bottom side.

[0084] Furthermore, the film winding device 100 according to the above embodiment is equipped with only one supply system for the film 150. However, the present invention is not limited to this, and can also be applied to a film winding device equipped with multiple supply systems for the film 150, that is, a film winding device in which multiple configurations shown in FIG. 1 are arranged in parallel.

[0085] Furthermore, in the above embodiment, the film winding device 100 was of the tape winding type, and therefore the cutting unit 4 was of the guillotine type. However, the present invention is not limited to this, and if the film winding device 100 is of the electrostatic winding type, the cutting unit 4 is not limited to the guillotine type, and may be of a type in which the cutting blade slides left and right on the film winding device 100 to cut the film 150. [Industrial Applicability]

[0086] The present invention is applicable to a guide roller position switching device provided in a turret-type film winding device. [Explanation of symbols]

[0087] 1 Turret mechanism 21 Touch roller 4 Cutting Unit 5. Guide roller position switching device 6 Guide roller unit 61 Air cylinder (first actuator) 64 Guide roller 7 Stopper unit 71 Air cylinder (second actuator) 81~84 Core 100 Film winding device 150 films 200 winding rolls 210 Add-on Roll O Turret center (rotation center of turret mechanism)

Claims

1. a turret mechanism that allows multiple winding cores to be replaced; a touch roller that comes into contact with a take-up roll formed by winding the film around one of the plurality of winding cores that is located upstream in the film supply direction; and a guide roller provided corresponding to each of the winding cores, the guide roller guiding the film toward the winding roll when the winding roll, on which a predetermined amount of the film has been wound around the winding core located on the upstream side, is moved downstream by the rotation of the turret mechanism; a cutting unit that cuts the film span between the touch roller and the guide roller that guides the film when switching between winding cores that wind the film, A guide roller position switching device characterized in that the relative position of each of the guide rollers with respect to the turret mechanism is variable.

2. 2. The guide roller position switching device according to claim 1, a guide roller position switching device, characterized in that the larger the outer diameter of the core moved upstream by the rotation of the turret mechanism, the larger the angular interval set between the center position of the core and the center position of the guide roller guiding the film around the rotation center of the turret mechanism.

3. 2. The guide roller position switching device according to claim 1, a guide roller position switching device characterized in that, when the winding roll, which has been moved to the downstream side by the rotation of the turret mechanism, is moved again to the upstream side to rewind the film, the larger the outer diameter of the winding roll that has been moved upstream, the larger the angular interval set between the center position of the winding roll and the center position of the guide roller that guides the film around the rotation center of the turret mechanism.

4. 4. The guide roller position switching device according to claim 1, 2 or 3, a first actuator that varies the positions of the guide rollers, and a second actuator that moves a stopper member that regulates the positions of the guide rollers that guide the film, A guide roller position switching device, characterized in that the first actuator is attached to the turret mechanism, while the second actuator is attached to a device body that rotatably supports the turret mechanism.

5. 2. The guide roller position switching device according to claim 1, a guide roller position switching device, characterized in that when the winding roll that has moved to the downstream side by the rotation of the turret mechanism is taken out by the take-out device, a large angular interval is set around the rotation center of the turret mechanism between the center position of the winding roll and the center position of the guide roller that is located on the approach side of the take-out device relative to the winding roll, and the guide roller is displaced in a direction away from the movement trajectory of the take-out device.

6. a touch roller that contacts a take-up roll formed by winding a film onto a core located upstream in a film supply direction among the plurality of cores; a guide roller that is provided corresponding to each core and guides the film toward the take-up roll when the take-up roll, with a predetermined amount of film wound onto the upstream core, is moved downstream by turning the turret mechanism; and a cutting unit that cuts a film span between the touch roller and the guide roller guiding the film when switching the core onto which the film is wound, a target position of the guide roller guiding the film is defined, and a target position of the guide roller in a direction away from a movement locus of the take-out device is defined when the take-up roll, which has moved to the downstream side by the rotation of the turret mechanism, is taken out by the take-out device; A guide roller position switching method, characterized in that control is performed to restrict or move the guide roller to each of the target positions.

7. The guide roller position switching device according to claim 1 is installed, adjusting the position of the guide roller that guides the film; a film winding device configured to adjust the position of the guide roller in a direction away from the movement trajectory of the take-out device when the take-out device takes out the winding roll that has moved downstream due to the rotation of the turret mechanism.

Images