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

Abstract

In a turret-type film winding device, it is possible to achieve both good film cutting and avoiding interference with a guide roller of a take-out device. [Solution] A guide roller position switching device 5 is made up of a guide roller unit 6 that changes the relative position of a guide roller 64 with respect to a turret mechanism 1 by the operation of 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 replacement position P2. Regulating the position of the guide roller 64 that guides the film 150 suppresses variations in the cuttability of the film 150 caused by variations in the cut film span. In addition, adjusting the position of the guide roller 64 with respect to the winding roll that has moved to replacement position P2 eliminates concerns that the take-out device will interfere with the guide roller 64 when the winding roll is taken out.

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] 2. Description of the Related 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] FIG. 12 is a schematic diagram showing a turret mechanism b and its surroundings in a conventional 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 Fig. 12, the turret mechanism b is equipped with replaceable winding cores d1 and d2 at positions spaced 180° apart in the circumferential direction (opposing positions across the turret center O). The turret mechanism b is also equipped with guide rollers e1 and e2 corresponding to the winding cores d1 and d2, respectively. These guide rollers e1 and e2 are for guiding the film c toward the winding roll f when the winding roll f, which is formed by winding the film c around the winding cores d1 and d2, is moved downstream (to the discharge side) (see the state shown in Fig. 12(c)). The film winding device a is also equipped with a cutting mechanism g for cutting the film c during rewinding (when switching between the winding cores d1 and d2 that wind the film c).

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

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

[0007] Then, as shown in FIG. 12(d), the film c between the guide roller e1 and the touch roller h is cut by the cutting mechanism g while the core d2 moved upstream is in contact with the touch roller h. As a result, the film c downstream of the cutting position is wound up on the winding roll f, and the film c supplied from the previous process is started to be wound up by the core d2 moved upstream. After that, as shown in FIG. 12(e), the turret mechanism b is further rotated to arrange the touch roller h, the core d2, and the winding roll f in a horizontal line, and while the core d2 moved upstream continues to wind up the film c, the winding roll f moved downstream is taken out by a take-out device (not shown). An example of the 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 core on which the film c is not wound is attached downstream of the turret mechanism b (see the state shown in FIG. 12(a)). By repeating this operation, it becomes possible to continuously wind the film c onto each of the cores d1 and d2 without stopping the supply of the film c.

[0008] The take-up roll f that has been moved downstream by 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 by the rotation of the turret mechanism b to take 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] JP 2023-7179 A Summary of the Invention [Problem to be solved by the invention]

[0010] In conventional film winding device a, the rotation shafts of guide rollers e1, e2 were fixed to turret mechanism b, so when turret mechanism b rotated, guide rollers e1, 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)) between imaginary lines connecting turret center O and the central positions of winding cores d1, d2 (lines i1, i2 shown by dashed lines in FIG. 12(a)) and imaginary lines connecting turret center O and the central positions of guide rollers e1, e2 (lines j1, j2 shown by dashed 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 differ 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 that guides the film c (hereinafter referred to as the cut film span: see fs in Figure 12(c)) to vary, resulting in variation in the cuttability of the film c.

[0012] For example, Fig. 13 is a diagram corresponding to Fig. 12(c) in the case where winding cores d3 and d4 having diameters larger than the winding cores d1 and d2 shown in Fig. 12 are used, and Fig. 14 is a diagram corresponding to Fig. 12(c) in the case where film is added to an additional winding 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 the additional winding roll f', causing variations in the cuttability of the film c.

[0013] In order 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 have a short distance between the touch roller h and the guide roller e1. To achieve this, it is effective to make the angle θ small.

[0014] However, if the angle θ is made small, as shown in Fig. 12(e), when the winding roll f is taken out, the guide roller e2 is located below the winding roll f, and there is a concern that the take-out device may interfere with the guide roller e2. Therefore, in order to avoid this interference, there are problems in that the take-out operation by the take-out device becomes complicated and the worker performing the take-out operation is required to have a high level of skill.

[0015] Thus, 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 up until now.

[0016] The present invention has been made in consideration of the above points, and its object 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 are capable of achieving both good film cutting and avoiding interference with the guide roller of the take-out device. [Means for solving the problem]

[0017] The solution of the present invention for achieving the above object is directed to a guide roller position switching device for a turret-type film winding device, which includes a turret mechanism with multiple replaceable cores, a touch roller that contacts a take-up roll formed by winding a film around a core located upstream of the multiple cores in the film supply direction when the film is being wound around the core, guide rollers that are provided corresponding to each of the cores and guide the film toward the take-up roll when the take-up roll, with a predetermined amount of the film wound around the upstream core, is moved downstream by turning 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 core that winds the film. This guide roller position switching device is configured to change the relative position of each guide roller with respect to the turret mechanism. The larger the outer diameter of the core that has been moved to the upstream side 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 that guides the film is set around the rotation center of the turret mechanism. It is characterized by:

[0018] Due to this specification, when the film span between the touch roller and the guide roller is cut by the cutting unit during rewinding, the position of the guide roller (relative position to the turret mechanism) is variable by the guide roller position switching device, so that the length of the film (cut film span) between the touch roller and the guide roller (the guide roller guiding the film) can be adjusted to a desired length by adjusting the position of the guide roller according to the outer diameter dimension of the winding core and the amount of film taken up on the rewind roll. Therefore, it is possible to suppress variation in the cuttability of the film caused by variation in the cut film span. In addition, even when the winding roll is taken out, since the position of the guide roller is variable by the guide roller position switching device, it is possible to eliminate the guide roller being located near the winding roll, and it is possible to eliminate the concern that the take-out device will interfere with the guide roller. In this way, with this solution, it is possible to achieve both good cutting of the film and avoiding interference of the take-out device with the guide roller.

[0020] As shown in Fig. 13, the larger the outer diameter of the winding core that has moved upstream due to the rotation of the turret mechanism, the closer the guide roller is to the rotation position of the turret mechanism when the winding core comes into contact with the touch roller, compared to when the outer diameter of the winding core is small. In other words, in the 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 may cause variation 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 and the center position of the guide roller that guides the film is set to be, thereby suppressing variation in the cut film span and thereby suppressing variation in the cuttability of the film.

[0021] As another solution, 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 add more winding, the larger the outer diameter dimension of the winding roll moved upstream, the larger the angular interval between the center position of the winding roll and the center position of the guide roller that guides the film is set around the center of rotation of the turret mechanism.

[0022] As shown in Fig. 14, the larger the outer diameter of the winding roll (addition roll) that has moved upstream by the rotation of the turret mechanism, the closer the guide roller is to the touch roller as the rotation position of the turret mechanism when the winding roll comes into contact with the touch roller, compared to when the outer diameter of the winding roll is small. In other words, in the conventional technology, even when adding wind to the winding 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 winding roll, which may cause variations in the cuttability of the film. In view of this point, in this solution, the larger the outer diameter of the winding roll that has moved upstream, the larger the angle interval between the center position of the winding roll and the center position of the guide roller that guides the film is set around the rotation center of the turret mechanism, thereby suppressing variations in the cut film span, and thereby suppressing variations in the cuttability of the film.

[0023] As another solution, The apparatus is provided with a first actuator that changes the position of each of the guide rollers, and a second actuator that moves a stopper member for regulating 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 supports the turret mechanism so that it can rotate.

[0024] Since each guide roller rotates integrally with the turret mechanism, the first actuator that 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 that moves the stopper member. For this reason, in this solution, the second actuator is attached to the device body (the device body that rotatably supports the turret mechanism). In general, when an actuator 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 complex configuration. However, in this solution, the second actuator for moving the stopper member that does not need to rotate integrally with the turret mechanism is attached to the device body (a non-rotating member), making it possible to smoothly move the stopper member by operating the second actuator while simplifying the configuration.

[0025] As another solution, 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, 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 large, and the guide roller is displaced in a direction away from the movement trajectory of the take-out device.

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

[0027] The technical idea of ​​the present invention also includes a guide roller position switching method implemented by the guide roller position switching device. That is, the present invention targets 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 in which multiple cores are replaceable, a touch roller that contacts a take-up roll formed by winding a film around a core located upstream of the multiple cores in the film supply direction when the film is being wound around the core, guide rollers that are provided corresponding to each of the cores and guide the film toward the take-up roll when the take-up roll with a predetermined amount of the film wound around the upstream core is moved downstream by turning 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 core that winds the film. This guide roller position switching method is characterized in that it defines a target position of the guide roller guiding the film, and when the winding roll that has moved to the downstream side by rotation of the turret mechanism is taken out by the take-out device, it defines a target position of the guide roller in a direction to retract from the movement trajectory of the take-out device, and controls the guide roller to restrict or move to each of the target positions.

[0028] This feature also makes it possible to suppress variations in the cutting ability of the film caused by variations in the cut film span, and to eliminate concerns that the take-out device may interfere with the guide roller when the winding roll is taken out, thereby achieving both good cutting of the film and avoiding interference of the take-out device with the guide roller.

[0029] The technical idea of ​​the present invention also includes a film winding device equipped with the above-mentioned guide roller position switching device. That is, the film winding device is characterized in that it is equipped with the guide roller position switching device, adjusts the position of the guide roller that guides the film, and adjusts 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 to the downstream side by the rotation of the turret mechanism.

[0030] This specification 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. Effect of the Invention

[0031] In the present invention, a turret-type film winding device is configured such that the relative position of each guide roller provided for each winding core with respect to the turret mechanism can be changed. This can suppress variations in the cutting ability of the film caused by variations in the cut film span, and can eliminate the concern that the take-out device will interfere with the guide rollers when the winding roll is taken out. This makes it possible to achieve both good cutting of the film and avoiding interference of the take-out device with the guide rollers. [Brief description 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. [Diagram 2] 2 is a view taken along the arrow II in FIG. 1, showing the periphery of the guide roller position switching device. [Diagram 3] FIG. 13 is a diagram showing a state at the start of rewinding. [Figure 4] FIG. 13 is a diagram showing a state when the touch roller is detached. [Diagram 5]13A and 13B are diagrams illustrating a guide roller position regulation state. [Figure 6] FIG. 13 is a diagram showing a film cutting preparation state. [Figure 7] FIG. 13 is a diagram showing a state at the time of contact of the touch roller. [Figure 8] FIG. 13 is a diagram showing the state at the time when the film is cut. [Figure 9] FIG. 13 is a diagram showing a state when the winding roll is removed. [Figure 10] FIG. 13 is a diagram showing the state at the time of contact of the touch roller when a large diameter winding core is used. [Figure 11] 11A and 11B are diagrams showing the state at the time of contact of the touch roller when rewinding the film. [Figure 12] FIG. 1 shows an outline of the operation of a film winding device according to prior art, where (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 additional film is being wound in a film winding device according to the prior art. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0033] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In this embodiment, the present invention is applied to a tape winding method 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 a static electricity winding method in which a film is wound around a core by utilizing static electricity.

[0034] -Outline of film winding device- First, a 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 periphery in a film winding device 100 according to this embodiment. In FIG. 1, the Y1 direction side is the upstream side (the upstream side in the supply direction of the film 150), the Y2 direction side is the downstream side (the downstream side in the supply direction of the film 150), the X1 direction side is the left side of the film winding device 100, the X2 direction side is the right side of the film winding device 100, the Z1 direction side is the upper side (the upper side in the vertical direction), and the Z2 direction side is the lower side (the lower side in the vertical direction). In addition, FIG. 1 shows the configuration of the turret mechanism 1 and its periphery on one side (e.g., the left side) in the left-right direction of the film winding device 100, but the turret mechanism 1 and its periphery on the other side (e.g., the right side) have the same 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] The 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 the film 150 can be changed, and the 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 (e.g., 200 m / min). The winding modes of film winding device 100 include upper winding, in which film 150 is supplied so that its bottom surface is positioned on the inside of a winding roll (a winding roll formed by winding a film around a core), and lower winding, in which film 150 is supplied so that its top surface is positioned on the inside of a 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, which can rotate around a horizontal axis (around the turret center O) by receiving a driving force from a power source (such as an electric motor) not shown. The turret plate 11 may be circular. On the turret plate 11, winding cores 81, 82 are replaceably mounted at positions (opposite positions sandwiching the turret center O) spaced apart by an angle of 180° in the rotation direction. These winding cores 81, 82 are mounted on a rotating shaft provided on the turret plate 11, and can wind up the film 150 by rotating integrally with the rotating shaft. 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, and the central axis of the connecting shaft 12 is 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 for allowing 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, so that each of the winding cores 81, 82 can 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 the 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 around 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 around the winding core 81 (82) or a position for keeping the winding roll on standby to wind more film.

[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 (such as an electric motor) 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 capable of rotating about a horizontal axis by receiving power from this power source. As the arm 22 rotates, the touch roller 21 is capable of moving in a direction approaching or moving away from the outer circumferential surface of the winding core 81 or winding roll located at the 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] The transport rollers 3, 3 and the 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 taken up 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 the touch roller unit 2 with respect to the outer circumferential 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 the first arm 41 is rotatably supported by the main body (device main body) of the film winding device 100. One end of the second arm 42 is rotatably supported by the other end of the first arm 41. The cutting blade 43 is attached to the other end of the second arm 42. The position of the cutting unit 4 shown in FIG. 1 is a standby position, which is a position in a state in which the film 150 is not cut (see FIG. 8 for the state in which the film 150 is cut) and in a state in which preparation for cutting is not being made (see FIG. 6 for the state in which the film 150 is prepared). When cutting the film 150, the first arm 41 rotates clockwise in the figure as indicated by the arrow A in the figure, and the second arm 42 rotates counterclockwise in the figure as indicated by the arrow B in the figure, whereby the cutting blade 43 cuts the cut film span between the touch roller 21 and the guide roller 64 that guides the film 150 (see FIG. 8). The cutting unit 4 is of a guillotine type in which a cutting blade 43 having a length equal 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 the line 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 includes a guide roller unit 6 that supports a 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. 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, as shown in FIG. 5. Since 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, the same reference numerals are used for the components of the second guide roller unit 6B that are the same as those of the first guide roller unit 6A.

[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 advances and retreats relative to the cylinder body 61a. An air chamber (not shown) is provided inside the cylinder body 61a, and the piston rod 61b advances and retreats according to 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 suspended 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] As a result, as the piston rod 61b moves back and forth, the first arm 62 and the second arm 63 rotate, thereby allowing the guide roller 64 to change its position around the center of the support shaft 65, which is the rotation center 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 protruding amount 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 protruding amount 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] On the other hand, in the second guide roller unit 6B located on the Z2 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 core 82 (or the take-up roll formed by winding film 150 around the 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 core 82 (or the take-up roll formed by winding film 150 around the 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 regulate the rotational position of the second arm 63 by abutting against a stopper member 72 of the stopper unit 7 described below (see the state shown in FIG. 5), thereby regulating the position of the guide roller 64.

[0058] <Stopper unit> The stopper unit 7 is a unit for regulating the position of the guide roller 64 that guides the film 150. In other words, this stopper unit 7 is provided for regulating 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. Since each stopper unit 7 has the same configuration, 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) will be described as an example here.

[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 according 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 body 110. This allows the stopper member 72 to rotate about the support member 112 as the center of rotation as the piston rod 71b advances and retreats. A stopper 73 capable of abutting against the stopper receiving portion 66 is attached to the tip of the stopper member 72 by means of bolts or the like. 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 receiving portion 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 flip-up posture) in which it extends horizontally. In this case, the stopper 73 of the stopper member 72 is in a position that is out of the movement path 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 Fig. 5, when the piston rod 71b is protruding (the protruding amount 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 turns, and when the stopper receiving portion 66 moves toward the stopper 73, the stopper receiving portion 66 abuts against the stopper 73. This restricts the position of the guide roller 64. Since the position of the guide roller 64 is restricted by the stopper 73 in this way, 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 when film winding begins), when the winding operation of film 150 begins, winding of film 150 onto core 81 begins with the rotation of 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 core 82 on which film 150 is not wound is attached 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 extending along the horizontal direction (a jumped-up position).

[0067] Then, as shown in Fig. 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 winding 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 protruding amount of the piston rod 71b of the air cylinder 71 of the stopper unit 7 is increased, and the stopper member 72 is put into a position extending along the vertical direction.

[0069] Here, the positional relationship between the touch roller 21 and the guide roller 64 according to the outer diameter of the winding core 82 will be described. As described above with reference to Fig. 13, in the conventional technology, 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 closer the guide roller e1 is to the touch roller h as the rotation position of the turret mechanism b when the winding core d3 comes into contact with the touch roller h, compared to when the outer diameter of the winding core is small. In other words, in the conventional technology, the cut film span fs (see Fig. 12(c)) varies depending on the outer diameter of the winding core d3, causing variation in the cuttability of the film c.

[0070] Considering this, in this embodiment, the position of the guide roller 64 is restricted by a stopper member 72 (more specifically, a stopper 73) so that the position of the guide roller 64 is restricted to a predetermined position regardless of the rotation position of the turret mechanism 1. FIG. 7 shows a state in which the touch roller 21 contacts the winding core 82 via the film 150 in this embodiment, and FIG. 10 shows a state in which the touch roller 21 contacts the winding core 84 via the film 150 when large-diameter winding cores 83, 84 are used. In this way, the rotation position of the turret mechanism 1 in a state in which the touch roller 21 contacts the winding core via the film 150 differs between a case in which the outer diameter dimensions of the winding cores 83, 84 are large and a case in which the outer diameter dimensions of the winding cores 81, 82 are small. In this embodiment, even when the rotation position of the turret mechanism 1 differs in this way, the position of the guide roller 64 is restricted by the stopper 73 so that the film span (cut film span) FS between the touch roller 21 and the guide roller 64 guiding the film 150 is approximately constant (approximately the same). In other words, regardless of the outer diameter of the core, the film span FS between the touch roller 21 and the guide roller 64 is kept approximately constant. 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 approximately constant. This type of operation corresponds to what is said in this 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 between the center position of that core around the rotation center of the turret mechanism and the center position of the guide roller that guides the film is set."

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

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

[0073] By such a rotation of the turret mechanism 1, the winding roll 200 located at the winding position P1 moves to the replacement position P2, and the winding core 82 located at the replacement position P2 moves to the winding position P1, and as shown in Fig. 5, the film 150 supplied toward the winding roll 200 that has moved to the replacement position P2 is guided by the guide roller 64 of the second guide roller unit 6B. In the state shown in Fig. 5, the first guide roller unit 6A that has moved downward by the rotation of the turret mechanism 1 increases the protruding amount of the piston rod 61b of the air cylinder 61, and the second arm 63 rotates in the clockwise direction in Fig. 5. As a result, the position of the guide roller 64 moves away from the winding roll 200 located at the replacement position P2.

[0074] 6 (a diagram showing a state in which the film is prepared to be cut), first arm 41 of cutting unit 4 rotates clockwise as indicated by arrow A in the figure, thereby preparing to cut film 150 with cutting blade 43. In other words, film 150 is cut simply by rotating second arm 42 counterclockwise as indicated 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 the present 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 is rotated counterclockwise in the figure as indicated by arrow B in the figure, thereby cutting film 150. As a result, film 150 downstream of the cutting position is taken up by 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 so that the touch roller 21, the winding core 82, and the winding roll 200 are aligned horizontally, and while the winding of the film 150 continues around the winding core 82, which has moved to the winding position P1, the winding roll 200, which has moved to the replacement position P2, is removed by an removal device (not shown).

[0078] At this time, as described above, the protruding amount of the piston rod 61b of the air cylinder 61 of the first guide roller unit 6A becomes large, and the position of the guide roller 64 is moved away from the winding roll 200 located at the replacement position P2. In other words, the guide roller 64 retreats 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, since the guide roller 64 retreats from below the winding roll 200, there is no risk of the take-out device interfering with the guide roller 64.

[0079] Then, after winding roll 200 is removed, a new winding core on which film 150 is not wound is attached to replacement position P2 of turret mechanism 1. By repeating this operation, film 150 is continuously wound onto each of winding cores 81, 82 without stopping the supply of film 150.

[0080] -Effects of the embodiment- As described above, in this embodiment, when the film span FS between the touch roller 21 and the guide roller 64 (the guide roller 64 guiding the film 150) is cut by the cutting unit 4 during rewinding, the guide roller position switching device 5 changes the relative position of the guide roller 64 with respect to the turret mechanism 1, so that it is 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 makes it possible to suppress variations in the cuttability of the film 150 caused by variations in the cut film span. In addition, even when the winding roll 200 is taken out, the guide roller 64 can be prevented from being positioned near the winding roll 200 because the position of the guide roller 64 is changeable by the guide roller position switching device 5, so that it is possible to eliminate concerns that the take-out device will interfere with the guide roller 64. In this way, in this embodiment, it is possible to achieve both good cutting of the film 150 and avoiding interference of the take-out 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 (device body that rotatably supports the turret mechanism 1) 110. 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 satisfactorily 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 embodiment, 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 from the top 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 from the bottom.

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

[0085] Also, in the above embodiment, since the film winding device 100 is of the tape winding type, the cutting unit 4 is 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 a cutting blade slides left and rightward 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 Film 200 Winding roll 210 Add-on roll O Turret center (rotation center of the turret mechanism)

Claims

1. A turret mechanism in which a plurality of winding cores can be replaced; a touch roller that comes into contact with a take-up roll formed by winding the film around a core that is located upstream in a film supply direction among the plurality of cores; 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 a film span between the touch roller and the guide roller that guides the film when switching between winding cores that wind the film, The relative position of each of the guide rollers with respect to the turret mechanism is variable, a guide roller position switching device, characterized in that the larger the outer diameter dimension of the core moved to the upstream side 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 that guides the film around the rotation center of the turret mechanism.

2. A turret mechanism in which multiple winding cores can be replaced; a touch roller that comes into contact with a take-up roll formed by winding the film around a core that is located upstream in a film supply direction among the plurality of cores; 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 a film span between the touch roller and the guide roller that guides the film when switching between winding cores that wind the film, The relative position of each of the guide rollers with respect to the turret mechanism is variable, 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 add more winding, the larger the outer diameter dimension of the winding roll moved to the upstream side, 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 center of rotation of the turret mechanism.

3. A turret mechanism in which multiple winding cores can be replaced; a touch roller that comes into contact with a take-up roll formed by winding the film around a core that is located upstream in a film supply direction among the plurality of cores; 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 a film span between the touch roller and the guide roller that guides the film when switching between winding cores that wind the film, The relative position of each of the guide rollers with respect to the turret mechanism is variable, a first actuator for varying the position of each of the guide rollers, and a second actuator for moving a stopper member for regulating the position of the guide rollers guiding 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 an apparatus body that rotatably supports the turret mechanism.

4. A turret mechanism in which multiple winding cores can be replaced; a touch roller that comes into contact with a take-up roll formed by winding the film around a core that is located upstream in a film supply direction among the plurality of cores; 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 a film span between the touch roller and the guide roller that guides the film when switching between winding cores that wind the film, The relative position of each of the guide rollers with respect to the turret mechanism is variable, a guide roller position switching device characterized in that, when the winding roll that has been moved to the downstream side by the rotation of the turret mechanism is taken out by a take-out device, the angular interval 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 located on the approach side of the take-out device relative to the winding roll is set large, and the guide roller is displaced in a direction away from the movement trajectory of the take-out device.

5. A guide roller position switching method for switching the position of the guide roller in a turret-type film winding device comprising: a turret mechanism in which a plurality of winding cores are replaceable; a touch roller that contacts a winding roll formed by winding a film around a winding core located upstream in a film supply direction among the plurality of winding cores; guide rollers provided corresponding to each of the winding cores and guiding the film toward the winding roll when the winding roll, with a predetermined amount of the film wound around the upstream winding core, is moved downstream by rotating 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 around 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 trajectory 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, comprising controlling the guide roller to be restricted or moved to each of the target positions.

6. A guide roller position switching device according to any one of claims 1 to 4, 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-up roll, which has moved to the downstream side by rotation of the turret mechanism, is taken out by the take-out device.

Images