Cutting mechanism, winding machine and cutting method

Abstract

Provided is a cutting mechanism that contributes to improving the cutting performance of a film material. A cutting mechanism (61) according to one aspect of the present disclosure is used in a winding machine (1) configured to wind a film material (2) into a roll, the cutting mechanism being configured to cut the film material (2) by moving a cutter (66) in a left-right direction of the winding machine (1), and the cutting mechanism comprising: a guide mechanism configured to guide the film material (2) in the left-right direction of the winding machine (1); the cutter (66) is configured to guide the cutter (66) in the left-right direction of the winding machine (1); a driving mechanism configured to move the cutter (66) in the left-right direction of the winding machine (1); and a holding mechanism (65) configured to hold the cutter (66) at a preset initial position, the holding mechanism (65) including a first magnet (65a) provided in the cutter (66) and a second magnet (65b) provided in a stopped portion in the winder (1) when the cutter (66) moves, and the first magnet (65a) and the second magnet (65b) being magnetically connected to each other at the initial position.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a cutting mechanism, a winding machine, and a cutting method. BACKGROUND

[0002] Generally, a winding machine is used to wind a film material such as a long resin film into a roll shape. For example, as disclosed in Patent Literature 1, when winding of a film material is transferred from a first roll core to a second roll core, a cutter is moved in a left-right direction of the winding machine, thereby cutting the film material between the first roll core and the second roll core.

[0003] REFERENCES

[0004] PATENT LITERATURE

[0005] Patent Literature 1: Japanese Unexamined Patent Application Publication No. 2019-59587 SUMMARY

[0006] TECHNICAL PROBLEM

[0007] The applicant has found the following problem. As shown in FIG. 1, when a conventional winding machine reciprocates a cutter 66 along a guide rail 62a in a left-right direction of the winding machine and returns it to its initial position, in some cases, for example, the winding machine brings the cutter 66 into contact with a receiving mechanism 64 in the initial position to stop it. Figure 10

[0008] In this example, as shown in FIG. 2, the cutter 66 receives a reaction force from the receiving mechanism 64, and the cutter 66 cannot be accurately stopped at its initial position. That is, the position at which the cutter 66 stops can be different each time the film material is cut. Figure 10

[0009] Therefore, the position at which the cutter 66 starts to move to cut the film material is different each time the film material is cut, as a result, the acceleration distance of the cutter 66 is different, and thus the speed at which the film material is cut fluctuates, which can affect the cut surface of the film material.

[0010] The present disclosure was made in view of the above problem, and to provide a cutting mechanism, a winding machine, and a cutting method that contribute to improvement in cutting performance of a film material.

[0011] SOLUTION TO PROBLEM

[0012] A cutting mechanism according to an aspect of the present disclosure is a cutting mechanism used in a winding machine configured to wind a film material into a roll shape, the cutting mechanism being configured to cut the film material by moving a cutter in a left-right direction of the winding machine, and the cutting mechanism including:

[0013] ​​a guide mechanism configured to guide the cutter in the left-right direction of the winding machine;

[0014] a drive mechanism configured to move the cutter in the left-right direction of the winding machine; and

[0015] a holding mechanism configured to hold the cutter at a preset initial position, wherein the holding mechanism includes a first magnet provided in the cutter and a second magnet provided in a portion of the winding machine where the cutter stops when the cutter is moved, and the first magnet and the second magnet are magnetically connected to each other at the initial position.

[0016] The winding machine according to one aspect of the present disclosure includes the above-described cutting mechanism.

[0017] The cutting method according to one aspect of the present disclosure is a cutting method for cutting a film material wound in a roll shape by moving a cutter in the left-right direction of a winding machine, wherein, when the cutter has been reciprocated in the left-right direction of the winding machine and then returned to a preset initial position, a first magnet provided in the cutter and a second magnet provided in a portion of the winding machine where the cutter stops when the cutter is moved are magnetically connected to each other, and the cutter is held at the initial position.

[0018] Advantages of the Invention

[0019] According to the present disclosure, it is possible to provide a cutting mechanism, a winding machine, and a cutting method that contribute to improvement in cutting performance of a film material. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a view showing a configuration of a winding machine according to an embodiment when viewed from the side;

[0022] Figure 2 is a view showing a configuration of a first drive mechanism of a cutting mechanism in a winding machine according to an embodiment;

[0023] Figure 3 is a view showing a holding mechanism and the like of a cutting mechanism in a winding machine according to an embodiment;

[0024] Figure 4 is a view for explaining a procedure for transferring winding of a film material from a first core to a second core by using a winding machine according to an embodiment;

[0025] Figure 5is a diagram for explaining a procedure of a winding of a film material being transferred from a first winding core to a second winding core by using a winder according to an embodiment;

[0026] Figure 6 is a diagram for explaining a procedure of a winding of a film material being transferred from a first winding core to a second winding core by using a winder according to an embodiment;

[0027] Figure 7 is a diagram for explaining a procedure of a winding of a film material being transferred from a first winding core to a second winding core by using a winder according to an embodiment;

[0028] Figure 8 is a diagram showing a state in which a film material is pulled into a second winding core by using a pulling mechanism of a winder according to an embodiment;

[0029] Figure 9 is a diagram for explaining a stop position of a cutter in a winder according to an embodiment; and

[0030] Figure 10 is a diagram for explaining a stop position of a cutter in a general winder. DETAILED DESCRIPTION

[0031] Hereinafter, specific embodiments to which the present disclosure is applied will be described in detail with reference to the accompanying drawings. However, the present disclosure is not limited to the following embodiments. In addition, the following description and drawings are simplified appropriately for the sake of clarity.

[0032] First, the configuration of a winder according to the present embodiment will be described. Figure 1 is a diagram showing the configuration of a winder according to the present embodiment when viewed from the side. Note that, for the sake of clarity, Figure 1 is simplified and is partially shown as a perspective view.

[0033] For the sake of clarity of explanation, the following description will be made using a three-dimensional (XYZ) coordinate system. In this example, the X-axis positive side is the right side of the winder, and the X-axis negative side is the left side of the winder. The Y-axis positive side is the front side of the winder and is the downstream side in the direction in which the film material is fed, and the Y-axis negative side is the rear side of the winder and is the upstream side in the direction in which the film material is fed. The Z-axis positive side is the upper side of the winder, and the Z-axis negative side is the lower side of the winder.

[0034] As Figure 1 shown, a winder 1 according to the present embodiment is adapted to wind a film material 2 such as a long resin film into a roll shape. As Figure 1 shown, the winder 1 includes a plurality of first support portions 21, a plurality of second support portions 31, a feeding roller 41, a pulling mechanism 51, and a cutting mechanism 61.

[0035] Note that the plurality of first support portions 21, the plurality of second support portions 31, the feeding roller 41, and the pulling mechanism 51 are substantially plane-symmetric with respect to a plane that passes through the center of the first winding core 3 supported by the first support portion 21 in the X-axis direction as described later and is parallel to the YZ plane. Therefore, the configuration on the negative side of the X axis can be described as a representative example.

[0036] As shown in FIG. 1, the first support portion 21 supports the first winding core 3. Specifically, the first support portions 21 are disposed at intervals in the X-axis direction to support respective end portions of the first winding core 3 on the positive side of the X axis and on the negative side of the X axis, and each of the first support portions 21 has a long-arm shape in one axial direction, for example, when viewed from the X-axis direction. The first winding core 3 is a core member for winding the film material 2, and is, for example, a cylindrical member. Figure 1

[0037] Further, one end portion of the first support portion 21 is connected to the frame portion 11 of the winding machine 1 in a manner that it can rotate around the X axis, and the first support portion 21 is rotated by a driving force of a first driving mechanism (not shown).

[0038] Note that the frame portion 11 of the winding machine 1 is not an essential part of the present disclosure, and thus a description thereof will be omitted. However, preferably, the frame portion 11 is shaped so that other members of the winding machine 1 can be supported and the operation of the other members is not hindered.

[0039] A chuck portion to which and from which the first winding core 3 is attached and detached is provided at the other end portion of the first support portion 21. In a state in which the end portion of the first winding core 3 is attached to the chuck portion of the first support portion 21, the first winding core 3 is supported by the first support portion 21 in a manner that it extends in the X-axis direction.

[0040] Further, the first support portion 21 is configured to be able to transmit a driving force from a second driving mechanism (not shown) to the first winding core 3 via the chuck portion in a state in which the end portion of the first winding core 3 is attached to the chuck portion of the first support portion 21, so that the first winding core 3 can rotate on its own axis around the X axis.

[0041] At this time, for example, when viewed from the positive side of the X axis, the first winding core 3 can rotate counterclockwise on its own axis. With this configuration, the first support portion 21 can support the first winding core 3 in a manner that the first winding core 3 can revolve around the X axis and can rotate on its own axis.

[0042] As shown in FIG. 1, the first support portion 21 supports the first winding core 3. Specifically, the first support portions 21 are disposed at intervals in the X-axis direction to support respective end portions of the first winding core 3 on the positive side of the X axis and on the negative side of the X axis, and each of the first support portions 21 has a long-arm shape in one axial direction, for example, when viewed from the X-axis direction. The first winding core 3 is a core member for winding the film material 2, and is, for example, a cylindrical member. Figure 1 ​As shown, the second support portion 31 supports the second core 4. Specifically, the second support portions 31 are spaced apart along the X-axis to support corresponding ends of the second core 4 on the positive and negative sides of the X-axis, and each of the second support portions 31 has, for example, a long arm-like shape in one axial direction when viewed from the X-axis direction. The second core 4 is a core component for winding the film material 2, for example, a cylindrical component.

[0043] Furthermore, one end of the second support 31 is connected to the frame portion 11 of the winding machine 1 in a manner that allows it to rotate about the X-axis, and the second support 31 is rotated by the driving force of a third drive mechanism (not shown). At this time, as... Figure 1 As shown, the first support portion 21 and the second support portion 31 are rotatable about the same rotation axis AX1 and are configured such that they do not interfere with each other when rotating relative to each other.

[0044] The chuck portion to which the second core 4 is attached and detached is located at the other end of the second support portion 31. With the end of the second core 4 attached to the chuck portion of the second support portion 31, the second core 4 is supported by the second support portion 31 in a manner that extends along the X-axis direction.

[0045] At this time, as Figure 1 As shown, the distance between the central axis AX2 of the first core 3 supported by the first support 21 and the rotation axis AX1 can be substantially equal to the distance between the central axis AX3 of the second core 4 supported by the second support 31 and the rotation axis AX1.

[0046] The second support portion 31 is configured such that, when the end of the second core 4 is attached to the chuck portion of the second support portion 31, driving force can be transmitted from the fourth drive mechanism (not shown) to the second core 4 via the chuck portion, so that the second core 4 can rotate around the X-axis.

[0047] At this time, for example, when viewed from the positive side of the X-axis, the second core 4 can rotate counterclockwise. With this structure, the second support 31 can support the second core 4 in a manner that allows the second core 4 to revolve around the X-axis and rotate on its own axis.

[0048] like Figure 1 As shown, the feed roller 41 is a fade roller or guide roller, which is disposed on the negative side of the Y-axis relative to the first support 21 and the second support 31 to feed the film material 2 to the first core 3 or the second core 4. The feed roller 41 extends along the X-axis and is supported by the frame portion 11 of the winding machine 1 in such a way that it can rotate about the X-axis.

[0049] With the first core 3 revolving around the X-axis and thus separated from the feed roller 41 towards the positive Y-axis, and the second core 4 revolving around the X-axis and thus in contact with the film material 2 between the first core 3 and the feed roller 41, the pulling mechanism 51, which will be described in detail below, pulls the film material 2 toward the second core 4, so that the film material 2 is wound around the second core 4 in the direction of rotation of the second core 4.

[0050] like Figure 1 As shown, for example, when the membrane material 2 is not pulled toward the second core 4, the pulling mechanism 51 is disposed on the negative side of the Z-axis relative to the feed roller 41. Furthermore, in the X-axis direction, the pulling mechanism 51 is disposed between the first support portion 21 and the second support portion 31 on the positive side of the X-axis and the first support portion 21 and the second support portion 31 on the negative side of the X-axis.

[0051] Note that the following settings are sufficient: the first support part 21 supporting the first core 3, the second support part 31 supporting the second core 4, and the pulling mechanism 51 are configured so that they can operate without interfering with each other.

[0052] like Figure 1 As shown, the pulling mechanism 51 includes a contact portion 52, an arm mechanism 53, and a sliding mechanism 54. When the membrane material 2 is pulled towards the second core 4, the contact portion 52 contacts the membrane material 2. The contact portion 52 includes a first roller 52a, a second roller 52b, and a third roller 52c.

[0053] like Figure 1 As shown, the first roller 52a, the second roller 52b, and the third roller 52c extend along the X-axis direction, and their central axes are arranged substantially in a straight line when viewed from the X-axis direction. The first roller 52a, the second roller 52b, and the third roller 52c described above may be composed of a fade roller, a guide roller, or a combination thereof.

[0054] like Figure 1 As shown, the arm mechanism 53 includes a plurality of first arm portions 53a, a plurality of second arm portions 53b, a first cylinder 53c, and a second cylinder 53d. Each of the first arm portions 53a is a plate-like member substantially parallel to the YZ plane and is longer in one axial direction, for example, when viewed from the X-axis direction. The first arm portions 53a are spaced apart along the X-axis direction to support the corresponding ends of the first roller 52a, the second roller 52b, and the third roller 52c on the positive and negative sides of the X-axis.

[0055] like Figure 1 As shown, a first roller 52a is rotatably disposed at one end of a first arm portion 53a. A second roller 52b is rotatably disposed at the other end of the first arm portion 53a. Furthermore, a third roller 52c is rotatably disposed in the portion of the first arm portion 53a between one end and the other end.

[0056] As Figure 1 shown, the second arm portion 53b is a plate-like member substantially parallel to the YZ plane, and is bent counterclockwise, for example, when viewed from the positive side of the X axis. The second arm portion 53b is disposed spaced apart in the X axis direction. Further, one end portion of the second arm portion 53b is connected to the other end portion of the first arm portion 53a in a manner such that it can rotate about the X axis. Further, the other end portion of the second arm portion 53b is connected to the sliding mechanism 54 in a manner such that it can rotate about the X axis.

[0057] The first cylinder 53c is a drive source for rotating the first arm portion 53a about the X axis with respect to the second arm portion 53b. One end portion of the first cylinder 53c is connected to the other end portion of the first arm portion 53a in a manner such that it can rotate about the X axis. Further, the other end portion of the first cylinder 53c is connected to the second arm portion 53b in a manner such that it can rotate about the X axis. However, any drive device capable of rotating the first arm portion 53a about the X axis with respect to the second arm portion 53b can be used.

[0058] The second cylinder 53d is a drive source for rotating the second arm portion 53b about the X axis with respect to the sliding mechanism 54. One end portion of the second cylinder 53d is connected to the second arm portion 53b in a manner such that it can rotate about the X axis. Further, the other end portion of the second cylinder 53d is connected to the sliding mechanism 54 in a manner such that it can rotate about the X axis. However, any drive device capable of rotating the second arm portion 53b about the X axis with respect to the sliding mechanism 54 can be used.

[0059] The sliding mechanism 54 moves the contact portion 52 and the arm mechanism 53 in the Y axis direction. As Figure 1 shown, the sliding mechanism 54 includes a sliding plate 54a, a linear rail 54b, and a drive mechanism 54c. The sliding plate 54a is a plate-like member substantially parallel to the YZ plane, and is disposed spaced apart in the X axis direction. Further, the other end portion of the second arm portion 53b is connected to the surface of the sliding plate 54a on the inside of the winder 1.

[0060] Like a general linear rail, as Figure 2 shown, the linear rail 54b includes a guide rail 54d and a slider (not shown) that slides along the guide rail 54d. The guide rail 54d extends in the Y axis direction, and is fixed to the surface of the winder 1 frame portion 11 on the inside of the winder 1. The slider is fixed to the surface of the sliding plate 54a on the outside of the winder 1.

[0061] The drive mechanism 54c slides the slider along the guide rail 54d. The drive mechanism 54c can be composed of, for example, a linear motion mechanism using a ball screw or the like, and is connected to the slider so that linear motion can be transmitted.

[0062] The driving mechanism 54c is fixed to the surface of the frame portion 11 of the winder 1 on the inner side of the winder 1. With the above-described configuration, by operating the driving mechanism 54c, the contact portion 52 and the arm mechanism 53 can move in the Y-axis direction via the sliding plate 54a. However, any driving device that enables the contact portion 52 and the arm mechanism 53 to move in the Y-axis direction can be used.

[0063] Figure 3 is a view showing the configuration of a first driving mechanism of a cutting mechanism in the winder according to the present embodiment. Figure 1 is a view showing a holding mechanism and the like of the cutting mechanism in the winder according to the present embodiment. As shown in Figures 1 to 3 for example, the cutting mechanism 61 is disposed on the Y-axis negative side with respect to the first support portion 21 and the second support portion 31, and is disposed on the Z-axis positive side with respect to the sliding mechanism 54 of the pulling mechanism 51.

[0064] As shown in Figure 3 , the cutting mechanism 61 includes a first guide mechanism 62, a first driving mechanism 63, a receiving mechanism 64, a holding mechanism 65, a cutter 66, a second guide mechanism 67, and a second driving mechanism 68.

[0065] As shown in Figure 2 , the first guide mechanism 62 includes a guide rail 62a and a holder 62b. The guide rail 62a extends in the X-axis direction, and is fixed to the surface of a beam member 62c on the Y-axis positive side, for example, the beam member 62c extending in the X-axis direction between the frame portion 11 of the winder 1 on the X-axis positive side and the frame portion 11 of the winder 1 on the X-axis negative side. Note that the beam member 62c is a rectangular member, for example.

[0066] The holder 62b is slidably engaged with the guide rail 62a along the guide rail 62a. The holder 62b has an inverted L shape when viewed in the X-axis direction, for example, and includes a horizontal portion covering the surface of the beam member 62c on the Z-axis positive side, and a vertical portion extending from the end of the horizontal portion on the Y-axis positive side toward the Z-axis negative side and covering the surface of the beam member 62c on the Y-axis positive side, and the guide rail 62a is engaged with a groove portion formed in the vertical portion.

[0067] The first driving mechanism 63 moves the holder 62b along the guide rail 62a. As shown in Figure 2 , the first driving mechanism 63 includes a motor 63a, a first pulley 63b, a clutch 63c, a second pulley 63d, a first belt 63e, a third pulley 63f, a fourth pulley 63g, and a second belt 63h.

[0068] The motor 63a is fixed to the end of the beam member 62c on the X-axis negative side in the first guide mechanism 62, for example, via a first bracket (not shown), and the drive shaft of the motor 63a protrudes toward the Y-axis negative side. As shown inFigure 2 The first pulley 63b is fixed to a drive shaft of the motor 63a, as shown.

[0069] The clutch 63c can be, for example, any ordinary clutch mechanism capable of switching between transmission and interruption of driving force. The clutch 63c is fixed to the end of the beam member 62c in the first guide mechanism 62 on the negative side of the X axis and in the vicinity of the motor 63a, for example, via a second bracket (not shown). However, the clutch 63c can be omitted.

[0070] As Figure 3 shown, the second pulley 63d is fixed to an input shaft protruding from the clutch 63c toward the negative side of the Y axis, for example. The first belt 63e is a looped belt (jointless belt) and extends between the first pulley 63b and the second pulley 63d. The first pulley 63b, the second pulley 63d, and the first belt 63e described above form an input side transmission portion of the first drive mechanism 63.

[0071] The third pulley 63f is fixed to an output shaft protruding from the clutch 63c toward the positive side of the Y axis. The fourth pulley 63g is fixed to the end of the beam member 62c in the first guide mechanism 62 on the positive side of the X axis in such a manner that it can rotate around the Y axis via a third bracket 63i (see Figure 2 ).

[0072] The second belt 63h is a looped belt and extends between the third pulley 63f and the fourth pulley 63g, as shown. Figure 3 The third pulley 63f, the fourth pulley 63g, and the second belt 63h described above form an output side transmission portion of the first drive mechanism 63.

[0073] The holder 62b of the first guide mechanism 62 is fixed to the second belt 63h. Thus, the driving force of the motor 63a is transmitted to the second belt 63h via the first pulley 63b, the first belt 63e, the second pulley 63d, the clutch 63c, and the third pulley 63f, and the holder 62b moves in the X axis direction along with the movement of the second belt 63h in the X axis direction, the second belt 63h being rotated between the third pulley 63f and the fourth pulley 63g.

[0074] That is, the first pulley 63b, the clutch 63c, the second pulley 63d, the first belt 63e, the third pulley 63f, the fourth pulley 63g, and the second belt 63h form a drive transmission portion that transmits the driving force of the motor 63a to the holder 62b of the first guide mechanism 62.

[0075] Note that preferably, the weight of the second pulley 63d is heavier than the weight of each of the first pulley 63b, the third pulley 63f, and the fourth pulley 63g. With this configuration, a large amount of rotational energy stored by the rotation of the second pulley 63d can be transmitted to the holder 62b via the clutch 63c. That is, the second pulley 63d functions as an amplification section that amplifies the driving force of the motor 63a.

[0076] As described above, the receiving mechanism 64 contacts and receives the holder 62b that moves in the X-axis direction at the initial position of the holder 62b. For example, when the end portion of the beam member 62c of the first guide mechanism 62 on the positive side of the X-axis is set as the initial position of the holder 62b, as shown in Figure 3 the receiving mechanism 64 is fixed to the end portion of the beam member 62c on the positive side of the X-axis.

[0077] Therefore, the receiving mechanism 64 can receive the holder 62b that moves on the positive side of the X-axis at the initial position of the holder 62b. However, the position of the receiving mechanism 64 can be appropriately changed depending on the initial position of the holder 62b.

[0078] The holding mechanism 65 temporarily holds the holder 62b of the first guide mechanism 62 at the initial position of the holder 62b. As shown in Figure 3 the holding mechanism 65 includes a first magnet 65a and a second magnet 65b that can be magnetically connected to each other.

[0079] At this time, the magnetic connection force between the first magnet 65a and the second magnet 65b is a magnetic connection force by which the magnetic connection between the first magnet 65a and the second magnet 65b can be released when the driving force of the motor 63a of the first drive mechanism 63 is transmitted to the holder 62b.

[0080] However, when the first magnet 65a and the second magnet 65b are made of electromagnets, the magnetic connection force can be controlled by controlling the current supplied to the first magnet 65a and the second magnet 65b.

[0081] As shown in Figure 3 the first magnet 65a is fixed to the holder 62b, for example. The first magnet 65a is fixed to the surface of the horizontal portion of the holder 62b on the positive side of the Z-axis, for example. In a state in which the holder 62b of the first guide mechanism 62 is disposed at its initial position, the second magnet 65b is fixed to the portion that is stopped when the holder 62b moves in the winding machine 1 in a manner that magnetically connects to the first magnet 65a.

[0082] As shown in Figure 3As shown, for example, the second magnet 65b is fixed to the third bracket 63i via a bracket 65c, and the third bracket 63i is used to fix the fourth pulley 63g to the beam member 62c of the first guide mechanism 62. Note that the bracket 65c has, for example, an inverted T shape when viewed from the Y-axis direction, and includes a vertical portion extending in the Z-axis direction and a horizontal portion protruding from an end portion of the vertical portion on the negative side of the Z-axis toward the positive and negative sides of the Y-axis.

[0083] Further, as Figure 1 As shown, the bracket 65c protrudes from the third bracket 63i toward the positive side of the Y-axis between a portion of the second belt 63h in the first drive mechanism 63 on the positive side of the Z-axis and a portion of the second belt 63h in the first drive mechanism 63 on the negative side of the Z-axis, and the third bracket 63i is used to fix the fourth pulley 63g to the beam member 62c of the first guide mechanism 62. The second magnet 65b is fixed, for example, to a surface of the horizontal portion of the bracket 65c on the negative side of the Z-axis.

[0084] Thus, for example, in a state in which the holder 62b of the first guide mechanism 62 is disposed at its initial position, the first magnet 65a and the second magnet 65b coincide with each other in the Z-axis direction and magnetically connect with each other, and thus the holder 62b can be temporarily held at its initial position. Note that the positions of the first magnet 65a and the second magnet 65b are not limited to the above-described positions, and can be any positions at which the holder 62b can be temporarily held at its initial position.

[0085] The cutter 66 protrudes from the holder 62b of the first guide mechanism 62 toward the positive side of the Y-axis. As described later, in a state in which the pulling mechanism 51 pulls the film material 2 toward the second winding core 4 side, each of the second guide mechanisms 67 guides the cutter 66 so as to contact the film material 2 disposed between the first roller 52a of the pulling mechanism 51 and the second winding core 4.

[0086] Each of the second guide mechanisms 67 can be composed of a common straight rail, and they are disposed spaced apart in the X-axis direction. Further, the rail of the second guide mechanism 67 is fixed to the frame portion 11 of the winding machine 1, and a slider that slides along the rail is fixed to the beam member 62c of the first guide mechanism 62.

[0087] At this time, for example, the rail of the second guide mechanism 67 is disposed so as to gradually incline toward the positive side of the Y-axis in the negative side direction of the Z-axis, so that the cutter 66 can be guided toward the film material 2 disposed between the first roller 52a of the pulling mechanism 51 and the second winding core 4 via the first guide mechanism 62 as described above.

[0088] The second drive mechanism 68 moves the slider of the second guide mechanism 67. The second drive mechanism 68 can be, for example, a common linear motor as Figures 4 to 7The second drive mechanism 68 is connected to the first guide mechanism 62 at one end portion thereof, and is connected to the slider of the second guide mechanism 67 at the other end portion thereof.

[0089] Thus, the cutter 66 is caused to move along the guide rail of the second guide mechanism 67 via the slider of the second guide mechanism 67 and the first guide mechanism 62 by the extension and retraction of the second drive mechanism 68.

[0090] Next, a procedure in which the winding of the film material 2 is transferred from the first winding core 3 to the second winding core 4 by using the winder 1 according to the present embodiment will be described. Figure 8 Each of FIGS. 10A to 10C is a diagram that explains a procedure in which the winding of the film material is transferred from the first winding core to the second winding core by using the winder according to the present embodiment. Figures 4 to 7 is a diagram that shows a state in which the film material is pulled to the second winding core by using the pulling mechanism of the winder according to the present embodiment. Note that, for the sake of clarity, Figure 8 Each of FIGS. 10A to 10C is a diagram that explains a procedure in which the winding of the film material is transferred from the first winding core to the second winding core by using the winder according to the present embodiment. Figure 1 is also simplified.

[0091] First, as shown in FIG. 10A, the first winding core 3 revolves to wind the film material 2 that is fed via the feeding roller 41. Then, as the winding of the film material 2 by the first winding core 3 continues, as shown in FIG. 10B, Figure 4 Figure 5 and Figure 6 When viewed from the positive side of the X axis, the first winding core 3 revolves counterclockwise via the first support portion 21.

[0092] At this time, the second winding core 4 is disposed, for example, on the positive side of the Z axis with respect to the first winding core 3. Further, when viewed from the positive side of the X axis, for example, the first arm portion 53a of the pulling mechanism 51 has been rotated to the most counterclockwise position with respect to the second arm portion 53b, and the second arm portion 53b has been rotated to the most clockwise position with respect to the sliding plate 54a of the pulling mechanism 51.

[0093] Further, for example, the sliding plate 54a of the pulling mechanism 51 is disposed at the most negative side of the Y axis. Further, for example, in a state in which the first guide mechanism 62 of the cutting mechanism 61 is disposed at the most negative side of the Y axis, the holder 62b of the first guide mechanism 62 is disposed at its initial position (for example, the end portion of the guide rail 62a of the first guide mechanism 62 on the positive side of the X axis).

[0094] When the amount of the winding of the film material 2 by the first winding core 3 approaches a predetermined amount, as shown in FIG. 10C, Figure 7 ​As shown, when viewed from the positive X-axis side, the first core 3 revolves counterclockwise via the first support 21, and the second core 4 revolves counterclockwise via the second support 31. The second core 4 contacts the film material 2 between the first core 3 and the feed roller 41 from the positive Z-axis side. At this time, the second core 4 is rotating.

[0095] Next, the drive mechanism 54c of the pulling mechanism 51 operates to move the contact portion 52 and the arm mechanism 53 towards the positive Y-axis via the sliding plate 54a. Then, the first cylinder 53c of the pulling mechanism 51 is retracted, the first arm portion 53a is rotated clockwise when viewed from the positive X-axis side, and the first roller 52a contacts the film material 2 between the first core 3 and the second core 4 from the negative Z-axis side. At this time, when viewed from the positive X-axis side, the first arm portion 53a is bent counterclockwise relative to the second arm portion 53b.

[0096] Next, the second cylinder 53d of the pulling mechanism 51 is extended, and the second arm 53b is rotated counterclockwise when viewed from the positive side of the X-axis. The first roller 52a pulls the film material 2 between the first core 3 and the second core 4 toward the second core 4, so that the portion of the film material 2 between the first core 3 and the second core 4 in which the first roller 52a is positioned on the negative side of the Y-axis is wound around the second core 4 in the direction of rotation of the second core 4.

[0097] Next, the second drive mechanism 68 of the cutting mechanism 61 is extended, causing the first guide mechanism 62 and the like to move along the guide rail of the second guide mechanism 67 toward the positive Y-axis. At this time, when viewed from the Y-axis direction, the cutter 66 of the cutting mechanism 61 is positioned outside the first support portion 21 and the second support portion 31 along the X-axis direction. For example, when viewed from the Y-axis direction, the cutter 66 of the cutting mechanism 61 is positioned on the positive X-axis side relative to the film material 2.

[0098] Next, the first cylinder 53d of the pulling mechanism 51 is extended, as... Figure 8 As shown, when viewed from the positive side of the X-axis, the second arm 53a is rotated counterclockwise, and the first roller 52a pulls the film material 2 between the first core 3 and the second core 4 toward the second core 4, so that the portion of the film material 2 between the first core 3 and the second core 4 in which the first roller 52a is positioned on the negative side of the Y-axis is further wound around the second core 4 in the direction of rotation of the second core 4.

[0099] In other words, the pulling mechanism 51 moves the first roller 52a to wind up the film material 2 between the first core 3 and the second core 4 around the second core 4 in the direction of the second core 4's rotation. At this time, when viewed from the X-axis direction, the end of the cutter 66 on the positive side of the Y-axis is arranged to coincide with the film material 2 disposed between the second core 4 and the first roller 52a.

[0100] Note that, as Figure 8 As shown, with the first roller 52a positioned on the positive side of the Z-axis relative to the second core 4, preferably, the end of the first roller 52a of the pulling mechanism 51 on the negative side of the Y-axis is positioned on the negative side of the Y-axis, that is, on the side in the direction of rotation of the second core 4 relative to the central axis AX3 of the second core 4.

[0101] With this structure, the Z-axis positive end of the portion of the membrane material 2 between the first core 3 and the second core 4 in which the first roller 52a is positioned on the negative Y-axis side can be positioned on the negative Y-axis side relative to the central axis AX3 of the second core 4. As will be described later, when the membrane material 2 positioned between the second core 4 and the first roller 52a is cut, the end of the membrane material 2 can fall off due to its own weight by being pulled by the rotation of the second core 4.

[0102] In addition, such as Figure 8 As shown, preferably, the third roller 52c of the pulling mechanism 51 pushes the film material 2 against one side of the second core 4. This reliably maintains the state in which the film material 2 is wound around the second core 4.

[0103] At this time, when viewed from the X-axis direction, preferably, the third roller 52c pushes (presses) the film material 2 against one side of the second core 4 near the contact point where it contacts the second core 4 along the straight line formed by the film material 2 between the second core 4 and the first roller 52a of the pulling mechanism 51. As a result, the entry of air bubbles when the film material 2 is wound around the second core 4 can be reduced, and the stress on the film material 2 can be reduced.

[0104] In addition, such as Figure 1 As shown, when viewed from the X-axis direction, preferably, one end of the second arm 53b of the pulling mechanism 51 is positioned on the positive side of the Z-axis relative to the central axis AX3 of the second core 4, according to the bending shape of the second arm 53b. Thus, when the first arm 53a is rotated toward the second core 4, the portion of the film material 2 between the first core 3 and the second core 4 in which the first roller 52a is positioned on the negative Y-axis side can be wound around the second core 4 over a wider area.

[0105] Next, with the clutch 63c of the cutting mechanism 61 pre-disengaged, the motor 63a is rotated, and when the rotational speed of the motor 63a reaches or exceeds a preset rotational speed, the clutch 63c is engaged. Thus, the driving force of the motor 63a is transmitted to the cutter 66 via the first pulley 63b, the first belt 63e, the second pulley 63d, the clutch 63c, the third pulley 63f, the second belt 63h, and the retainer 62b.

[0106] Then, the magnetic connection between the first magnet 65a and the second magnet 65b of the holding mechanism 65 is released, and the cutter 66 moves toward the X-axis negative side to cut the film material 2 provided between the second winding core 4 and the first roller 52a of the pulling mechanism 51. At this time, when the second pulley 63d is used as a magnification portion, a large amount of rotational energy can be transmitted to the cutter 66, and the cutter 66 accelerated from the outside of the first support portion 21 and the second support portion 31 cuts the film material 2 across the film material 2. Thereby, the film material 2 can be desirably cut.

[0107] Thereafter, the winding of the film material 2 by the second winding core 4 is started, and the winding of the film material 2 is transferred from the first winding core 3 to the second winding core 4. At this time, the film material 2 provided between the second winding core 4 and the first roller 52a of the pulling mechanism 51 can be cut near the second winding core 4.

[0108] When the winding of the film material 2 is transferred from the first winding core 3 to the second winding core 4 as described above, the pulling mechanism 51 pulls the film material 2 between the first winding core 3 and the second winding core 4 toward the second winding core 4 side, so that a portion of the film material 2 between the first winding core 3 and the second winding core 4, which is positioned on the Y-axis negative side with the first roller 52a therebetween, is wound around the second winding core 4 in the direction of the self-rotation of the second winding core 4.

[0109] Therefore, compared with a general winder, the area of the film material 2 in contact with the second winding core 4 when the winding of the film material 2 is transferred from the first winding core 3 to the second winding core 4 is larger, and the film material 2 can be desirably wound by the second winding core 4. Thereafter, while the first winding core 3 and the second winding core 4 are interchanged, the state shown in Figures 4 to 7 and Figure 9 is repeated, whereby the film material 2 can be continuously wound.

[0110] Figure 10 is a diagram for explaining the cutter stop position in the winder according to the present embodiment. If the holding mechanism 65 is not provided, the holder 62b receives a reaction force from the receiving mechanism 64, and as shown in Figure 9 , not only the holder 62b but also the cutter 66 cannot be accurately stopped at its initial position. That is, the position where the cutter 66 stops can be different each time the film material 2 is cut.

[0111] Therefore, the position where the cutter 66 starts to move toward the X-axis negative side to cut the film material 2 is different each time the film material 2 is cut, as a result, the acceleration distance of the cutter 66 is different, and thus the speed at which the film material 2 is cut fluctuates, so that the cut surface of the film material 2 can be affected.

[0112] On the contrary, because the winder 1 according to the present embodiment includes the holding mechanism 65, as​ As shown, when the holder 62b is moved to the positive side of the X-axis after the cutter 66 of the cutting mechanism 61 cuts the film material 2 and returns to the initial position thereof, even in the case where the holder 62b contacts the receiving mechanism 64 and receives a reaction force from the receiving mechanism 64, the holder 62b can be accurately held at the initial position thereof by the magnetic connection force of the holding mechanism 65.

[0113] Thus, the position at which the cutter 66 starts to move to the negative side of the X-axis can be made substantially the same each time the film material 2 is cut. Thus, this can ensure that the acceleration distance of the cutter 66 is substantially the same each time the film material 2 is cut, and variation in the speed at which the film material 2 is cut can be reduced, thereby making it possible to improve the cutting performance of the film material 2.

[0114] As described above, in the cutting mechanism 61, the winding machine 1, and the winding method according to the present embodiment, thus, it is possible to ensure that the acceleration distance of the cutter 66 is substantially the same each time the film material 2 is cut and variation in the speed at which the film material 2 is cut can be reduced, thereby making it possible to improve the cutting performance of the film material 2.

[0115] Furthermore, in the case where the holding mechanism is contact type and is configured to be able to hold the holder 62b at the initial position thereof, when the holding member contacts the same, foreign matter such as a fragment of the holding member can be generated. However, the holding mechanism 65 according to the present embodiment is configured to be able to hold the holder 62b at the initial position thereof in a non-contact manner using the magnetic connection force. Therefore, it is possible to reduce the possibility of generation of (extraneous) foreign matter, and as a result, it is possible to reduce the possibility of contamination due to foreign matter when the film material 2 is wound.

[0116] The present disclosure is not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present disclosure.

[0117] For example, the winding machine 1 according to the above-described embodiments is one example of a winding machine to which the cutting mechanism 61 is applied, and as a member of the winding machine 1 other than the cutting mechanism 61, a member of a general winding machine can be applied.

[0118] For example, the first guide mechanism 62, the first drive mechanism 63, the second guide mechanism 67, and the second drive mechanism 68 of the cutting mechanism 61 according to the above-described embodiments are examples, and these members can be included as long as the cutter 66 can be moved close to the film material 2 or moved in the X-axis direction when the film material 2 is cut.

[0119] For example, although the cutting mechanism 61 according to the above-described embodiments includes the receiving mechanism 64, it can be omitted.

[0120] This application is based on Japanese Patent Application No. 2023-54808 filed March 30, 2023, and claims priority to it, the disclosure of which is incorporated herein in its entirety by reference.

[0121] List of Reference Signs

[0122] 1 winding machine

[0123] 2 film material

[0124] 3 first winding core

[0125] 4 second winding core

[0126] 11 frame portion of the winding machine

[0127] 21 first support portion

[0128] 31 second support portion

[0129] 41 feeding roller

[0130] 51 pulling mechanism

[0131] 52 contact portion, 52a first roller, 52b second roller, 52c third roller

[0132] 53 arm mechanism, 53a first arm portion, 53b second arm portion, 53c first cylinder, 53d second cylinder

[0133] 54 sliding mechanism, 54a sliding plate, 54b linear rail, 54c driving mechanism, 54d guide rail

[0134] 61 cutting mechanism

[0135] 62 first guide mechanism, 62a guide rail, 62b holder, 62c beam member

[0136] 63 first driving mechanism, 63a motor, 63b first pulley, 63c clutch, 63d second pulley, 63e first belt, 63f third pulley, 63g fourth pulley, 63h second belt, 63i third bracket

[0137] 64 receiving mechanism

[0138] 65 holding mechanism, 65a first magnet, 65b second magnet, 65c bracket

[0139] 66 cutter

[0140] 67 guide mechanism

[0141] 68 driving mechanism

[0142] AX1 rotation axis of each of the first support portion and the second support portion

[0143] AX2 central axis of the first winding core

[0144] AX3 central axis of the second winding core

Claims

1. A cutting mechanism used in a winding machine configured to wind a film material into a roll shape, the cutting mechanism being configured to cut the film material by moving a cutter in a left-right direction of the winding machine, and comprising: a guide mechanism configured to guide the cutter in the left-right direction of the winding machine; a drive mechanism configured to move the cutter in the left-right direction of the winding machine; and a holding mechanism configured to hold the cutter at a preset initial position, wherein the holding mechanism includes a first magnet provided in the cutter and a second magnet provided in a portion of the winding machine where the cutter stops when the cutter has been moved, and the first magnet and the second magnet are magnetically connected to each other at the initial position.

2. The cutting mechanism according to claim 1, wherein the drive mechanism includes a motor and a drive transmission portion configured to transmit a driving force of the motor to the cutter, the drive transmission portion includes a clutch provided between the motor and the cutter, an input-side transmission portion between the motor and the clutch, and an output-side transmission portion between the clutch and the cutter, and the input-side transmission portion includes an amplification portion configured to amplify the driving force of the motor.

3. The cutting mechanism of claim 1 or 2, wherein, the cutting mechanism includes a receiving mechanism configured to receive the cutter in a state where the cutter has been reciprocated in the left-right direction of the winding machine and then returned to the initial position.

4. The cutting mechanism of claim 1 or 2, wherein, the magnetic connection between the first magnet and the second magnet is released when the driving force of the drive mechanism is transmitted to the cutter.

5. The cutting mechanism of claim 1 or 2, wherein, the first magnet and the second magnet are electromagnets.

6. The cutting mechanism of claim 1 or 2, wherein, the film material is a long resin film.

7. A winding machine including the cutting mechanism according to claim 1 or 2.

8. A cutting method for cutting a film material wound into a roll shape by moving a cutter in a left-right direction of a winding machine, wherein, when the cutter has been reciprocated in the left-right direction of the winding machine and then returned to a preset initial position, a first magnet provided in the cutter and a second magnet provided in a portion of the winding machine where the cutter stops when the cutter has been moved are magnetically connected to each other, and the cutter is held at the initial position.

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