Cutting mechanism, winding machine and cutting process

Abstract

A cutting mechanism is provided that contributes to improving the performance when cutting a film material. A cutting mechanism (61) according to one aspect of the present disclosure is a cutting mechanism used in a winding machine (1) configured to wind a film material (2) into a roll, wherein the cutting mechanism is configured to cut the film material (2) by cutting a cutting blade (66) in a left / right direction of the winding machine (1), and comprises: a guide mechanism configured to guide the cutting blade (66) in the left / right direction of the winding machine (1); a drive mechanism configured to move the cutting blade (66) in the left / right direction of the winding machine (1); and a holding mechanism (65) configured to hold the cutting blade (66) in a preset home position.The holding mechanism (65) comprises a first magnet (65a) provided in the cutting knife (66) and a second magnet (65b) provided in a part of the winding machine (1) which is stopped when the cutting knife (66) moves, wherein the first magnet (65a) and the second magnet (65b) are magnetically connected to each other in the starting position.

Description

Technical field

[0001] The present disclosure relates to a cutting mechanism, a winding machine and a cutting method. State of the art

[0002] In general, a winding machine is used to wind a film material, such as a long resin film, into a roll. As disclosed, for example, in patent literature 1, when the winding of a film material is transferred from a first winding core to a second winding core, a cutting blade is moved in the left / right direction of a winding machine to cut the film material between the first winding core and the second winding core. Citation list for patent literature

[0003] Patent literature 1: Japanese publication no. 2019-59587 Summary of invention Technical task

[0004] The applicant has identified the following problem: As in Fig. As shown in Figure 10, when the winding machine moves a cutting knife 66 back and forth along a guide rail 62a in the left / right direction of the winding machine and returns it to its starting position, in some cases the cutting knife 66 comes into contact with a receiving mechanism 64 in its starting position in order to stop it.

[0005] In this case, the cutting blade receives 66, as in Fig. Figure 10 shows a reaction force from the receiving mechanism 64, and the cutting blade 66 cannot be stopped precisely in its starting position. This means that the position at which the cutting blade 66 stops can be different each time a film material is cut.

[0006] Therefore, the position at which the cutting blade 66 begins cutting the film material differs with each cutting of the film material, which results in a difference in the acceleration distance of the cutting blade 66 and thus fluctuations in the speed at which the film material is cut, so that the cut surface of the film material can be affected.

[0007] The present disclosure was made taking into account the problem described above and provides a cutting mechanism, a winding machine and a cutting method that contribute to improving the performance when cutting a film material. Solution to the problem

[0008] A cutting mechanism according to one aspect of the present disclosure is a cutting mechanism used in a winding machine configured for winding a film material in roll form, wherein the cutting mechanism is configured to cut the film material by moving a cutting blade in a left / right direction of the winding machine and comprises: a guide mechanism configured to guide the cutting blade in the left / right direction of the winding machine; a drive mechanism configured to move the cutting blade in the left / right direction of the winding machine; and a holding mechanism configured to hold the cutting blade in a preset starting position, wherein the holding mechanism comprises a first magnet provided in the cutting blade and a second magnet provided in a part of the winding machine which is stopped when the cutting blade moves, and wherein the first magnet and the second magnet are magnetically connected to each other in the starting position.

[0009] A winding machine according to one aspect of the present disclosure comprises the cutting mechanism described above.

[0010] A cutting method according to one aspect of the present disclosure is a cutting method for cutting a film material wound in roll form by moving a cutting knife in a left / right direction of a winding machine, wherein, when the cutting knife has moved back and forth in the left / right direction of the winding machine and has then returned to a preset starting position, a first magnet provided in the cutting knife and a second magnet provided in a part of the winding machine which is stopped when the cutting knife moves are magnetically connected to each other and the cutting knife is held in the starting position. Advantageous effects of the invention

[0011] According to the present disclosure, it is possible to provide a cutting mechanism, a winding machine and a cutting method that contribute to improving the performance when cutting a film material. Brief description of the drawings Fig. 1 is a diagram showing a side view of a configuration of a winding machine according to one embodiment; Fig. 2 is a diagram showing a configuration of a first drive mechanism of a cutting mechanism in the winding machine according to the embodiment; Fig. Figure 3 is a diagram showing a holding mechanism and the like of the cutting mechanism in the winding machine according to the embodiment; Fig. Figure 4 is a diagram illustrating a process in which the winding of a film material using the winding machine according to the embodiment is shifted from a first winding core to a second winding core; Fig. Figure 5 is a diagram illustrating the process in which the winding of the film material is shifted from the first winding core to the second winding core using the winding machine according to the embodiment; Fig. Figure 6 is a diagram illustrating the process in which the winding of the film material is shifted from the first winding core to the second winding core using the winding machine according to the embodiment; Fig. Figure 7 is a diagram illustrating the process in which the winding of the film material is shifted from the first winding core to the second winding core using the winding machine according to the embodiment; Fig. Figure 8 is a diagram showing a state in which the film material is drawn into the second winding core using a pulling mechanism of the winding machine according to the embodiment; Fig. 9 is a diagram illustrating a position at which a cutting blade stops in the winding machine according to the embodiment; and Fig. Figure 10 is a diagram illustrating a position where a cutting blade stops in a conventional winding machine. Description of the embodiments

[0012] Specific embodiments to which this disclosure relates are described in detail below with reference to the drawings. However, this disclosure is not limited to the following embodiments. For the sake of clarity, the following descriptions and drawings have been simplified accordingly.

[0013] First, a configuration of a winding machine according to this embodiment is described. Fig. Figure 1 is a diagram showing the side view configuration of the winding machine according to this embodiment. It should be noted that Fig. 1 is simplified for clarity and partly presented as a perspective view.

[0014] The following description uses a three-dimensional (XYZ) coordinate system for clarity. In this example, the positive side of the X-axis is the right side of the winding machine, and the negative side is the left side. The positive side of the Y-axis is the front of the winding machine and the downstream side in the direction of film material feed, while the negative side is the back of the winding machine and the upstream side in the direction of film material feed. The positive side of the Z-axis is the top of the winding machine, and the negative side is the bottom.

[0015] As in Fig. As shown in Figure 1, a winding machine 1 according to this embodiment is suitable for winding a film material 2, such as a long resin film, into roll form. As shown in Figure 1, a winding machine 1 according to this embodiment is suitable for winding a film material 2, such as a long resin film, into roll form. Fig. As shown in Figure 1, the winding machine comprises first support parts 21, second support parts 31, a feed roller 41, a pulling mechanism 51 and a cutting mechanism 61.

[0016] It should be noted that the first support elements 21, the second support elements 31, the feed roller 41, and the tension mechanism 51 are essentially surface-symmetrical with respect to a plane passing through the center of a first winding core 3, which, as will be described later, is supported by the first support elements 21 in the X-axis direction 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.

[0017] The first support elements 21 support the first winding core 3, as shown in Fig. Figure 1 shows that the first support elements 21 are arranged at intervals in the X-axis direction to support the respective ends of the first winding core 3 on the positive and negative sides of the X-axis, and each of them has, for example, an arm shape that is long in an axial direction when viewed from the X-axis direction. The first winding core 3 is a core element for winding the film material 2 and is, for example, a cylindrical element.

[0018] Furthermore, one end of the first support part 21 is connected to a frame part 11 of the winding machine 1 in such a way that it is rotatable about the X-axis, and the first support part 21 is rotated by a driving force of a first drive mechanism (not shown).

[0019] It should be noted that the frame part 11 of the winding machine 1 is not an essential element of the present disclosure and is therefore not described in detail. However, the frame part 11 preferably has a shape that allows it to support other elements of the winding machine 1 without hindering its operation.

[0020] A chuck part, to which the first winding core 3 is attached and from which it is detached, is provided at the other end of the first support part 21. The first winding core 3 is supported by the first support part 21 such that it extends in the X-axis direction in a state in which the end of the first winding core 3 is attached to the chuck part of the first support part 21.

[0021] Furthermore, the first support part 21 is configured such that, in a state where the end of the first winding core 3 is attached to the chuck part of the first support part 21, it can transmit a driving force from a second drive mechanism (not shown) via the chuck part to the first winding core 3, so that the first winding core 3 can rotate about the X-axis.

[0022] At this point, for example, the first winding core 3 can rotate counterclockwise from the positive side of the X-axis. This configuration allows the first support element 21 to support the first winding core 3 so that it can rotate around the X-axis.

[0023] The second support elements 31 support a second winding core 4, as in Fig. Figure 1 shows that the second support elements 31 are arranged at intervals in the X-axis direction to support the respective ends of the second winding core 4 on the positive and negative sides of the X-axis. Each of these supports has, for example, an arm shape that is long in an axial direction when viewed from the X-axis direction. The second winding core 4 is a core element for winding the film material 2 and is, for example, a cylindrical element.

[0024] Furthermore, one end of the second support part 31 is connected to the frame part 11 of the winding machine 1 in such a way that it is rotatable about the X-axis, and the second support part 31 is rotated by a driving force of a third drive mechanism (not shown). At this point, as in Fig. As shown in Figure 1, the first support part 21 and the second support part 31 are rotatable about the same axis of rotation AX1 and are arranged so that they do not interfere with each other when rotated relative to each other.

[0025] A chuck part, to which the second winding core 4 is attached and from which it is detached, is provided at the other end of the second support part 31. The second winding core 4 is held by the second support part 31 such that it extends in the X-axis direction, with the end of the second winding core 4 attached to the chuck part of the second support part 31.

[0026] At this point, as in Fig. Figure 1 shows that the distance between a central axis AX2 of the first winding core 3, which is supported by the first support part 21, and the axis of rotation AX1 is essentially equal to the distance between a central axis AX3 of the second winding core 4, which is supported by the second support part 31, and the axis of rotation AX1.

[0027] The second support part 31 is configured such that, in a state where the end of the second winding core 4 is attached to the chuck part of the second support part 31, it can transmit a driving force from a fourth drive mechanism (not shown) via the chuck part to the second winding core 4, so that the second winding core 4 can rotate about the X-axis.

[0028] At this point, for example, the second winding core 4 can rotate counterclockwise from the positive side of the X-axis. This configuration allows the second support element 31 to support the second winding core 4 so that it can rotate around the X-axis.

[0029] As in Fig. As shown in Figure 1, the feed roller 41 is a guide roller or guide roller located on the negative side of the Y-axis with respect to the first support part 21 and the second support part 31 to feed the film material 2 to the first winding core 3 or the second winding core 4. The feed roller 41 extends in the X-axis direction and is supported by the frame part 11 of the winding machine 1 so that it is rotatable about the X-axis.

[0030] The pulling mechanism 51, the details of which will be described later, pulls the film material 2 to the side of the second winding core 4, so that the film material 2 is wound around the second winding core 4 in the direction in which the second winding core 4 rotates, in a state in which the first winding core 3 rotates about the X-axis and is thus spaced away from the feed roller 41 in the direction of the positive side of the Y-axis and the second winding core 4 rotates about the X-axis and is thus in contact with the film material 2 between the first winding core 3 and the feed roller 41.

[0031] For example, in Fig. As shown in Figure 1, the tensioning mechanism 51 is arranged on the negative side of the Z-axis with respect to the feed roller 41 in a state in which the film material 2 is not pulled towards the side of the second winding core 4. Furthermore, the tensioning mechanism 51 is arranged in the X-axis direction between the first support part 21 and the second support part 31 on the positive side of the X-axis and between the first support part 21 and the second support part 31 on the negative side of the X-axis.

[0032] It should be noted that it is sufficient if the first support part 21, which supports the first winding core 3, the second support part 31, which supports the second winding core 4, and the tensioning mechanism 51 are arranged in such a way that they can function without mutual interference.

[0033] As in Fig. As shown in Figure 1, the pulling mechanism 51 comprises a contact part 52, an arm mechanism 53, and a sliding mechanism 54. The contact part 52 comes into contact with the film material 2 when the film material 2 is pulled to the side of the second winding core 4. The contact part 52 comprises a first roller 52a, a second roller 52b, and a third roller 52c.

[0034] As in Fig. As shown in Figure 1, the first roller 52a, the second roller 52b, and the third roller 52c extend in the X-axis direction, and their central axes are arranged essentially linearly from the X-axis direction. The first roller 52a, the second roller 52b, and the third roller 52c described above can consist of guide rollers, pilot rollers, or a combination thereof.

[0035] As in Fig. As shown in Figure 1, the arm mechanism 53 comprises first arm sections 53a, second arm sections 53b, a first cylinder 53c, and a second cylinder 53d. Each of the first arm sections 53a is a plate-like element that is essentially parallel to the YZ plane and, for example, has an axial length when viewed from the direction of the X-axis. The first arm sections 53a are spaced at intervals in the X-axis direction to support the respective ends of the first roller 53a, the second roller 53b, and the third roller 53c on the positive and negative sides of the X-axis, respectively.

[0036] As in Fig. As shown in Figure 1, the first roller 52a is rotatably mounted at one end of the first arm section 53a. The second roller 52b is rotatably mounted at the other end of the first arm section 53a. Furthermore, the third roller 52c is rotatably mounted in a section of the first arm section 53a between its one end and its other end.

[0037] As in Fig. As shown in Figure 1, the second arm section 53b is a plate-like element that is essentially parallel to the YZ plane and, for example, curved counterclockwise when viewed from the positive side of the X-axis. The second arm sections 53b are arranged at intervals in the X-axis direction. Furthermore, one end of the second arm section 53b is connected to the other end of the first arm section 53a such that it is rotatable about the X-axis. The other end of the second arm section 53b is also connected to the sliding mechanism 54 such that it is rotatable about the X-axis.

[0038] The first cylinder 53c is a drive source for rotating the first arm section 53a about the X-axis relative to the second arm section 53b. One end of the first cylinder 53c is connected to the other end of the first arm section 53a in such a way that it can rotate about the X-axis. Furthermore, the other end of the first cylinder 53c is connected to the second arm section 53b in such a way that it can rotate about the X-axis. However, any drive means that can rotate the first arm section 53a about the X-axis relative to the second arm section 53b can be used.

[0039] The second cylinder 53d is a drive source for rotating the second arm section 53b about the X-axis relative to the sliding mechanism 54. One end of the second cylinder 53d is connected to the second arm section 53b so that it can rotate about the X-axis. The other end of the second cylinder 53d is connected to the sliding mechanism 54 so that it can rotate about the X-axis. However, any drive means that can rotate the second arm section 53b about the X-axis relative to the sliding mechanism 54 can be used.

[0040] The sliding mechanism 54 moves the contact part 52 and the arm mechanism 53 in the Y-axis direction. As in Fig. As shown in Figure 1, the sliding mechanism 54 comprises sliding plates 54a, a linear rail 54b, and a drive mechanism 54c. The sliding plates 54a are plate-like elements that are essentially parallel to the YZ plane and arranged at intervals in the X-axis direction. Furthermore, the other end of the second arm section 53b is connected to a surface of the sliding plate 54a on the inside of the winding machine 1.

[0041] Like an ordinary linear rail, the linear rail 54b comprises, as in Fig. Figure 1 shows a guide rail 54d and a carriage (not shown) that slides along the guide rail 54d. The guide rail 54d extends in the Y direction and is attached to a surface of the frame part 11 of the winding machine 1 on the inside of the winding machine 1. The carriage is attached to a surface of the sliding plate 54a on the outside of the winding machine 1.

[0042] The drive mechanism 54c moves the carriage along the guide rail 54d. The drive mechanism 54c can, for example, consist of a linear motion mechanism with a ball screw drive, etc., and is connected to the carriage so that a linear motion can be transmitted.

[0043] The drive mechanism 54c is attached to the surface of the frame part 11 of the winding machine 1 on the inside of the winding machine 1. With the above configuration, the contact part 52 and the arm mechanism 53 can be moved in the Y-axis direction by actuating the drive mechanism 54c via the sliding plate 54a. However, any drive mechanism capable of moving the contact part 52 and the arm mechanism 53 in the Y-axis direction can be used.

[0044] Fig. Figure 2 is a diagram showing a configuration of a first drive mechanism of the cutting mechanism in the winding machine according to this embodiment. Fig. Figure 3 is a diagram showing a holding mechanism and the like of the cutting mechanism in the winding machine according to this embodiment. As, for example, in Fig. As shown in Figure 1, the cutting mechanism 61 is located on the negative side of the Y-axis with respect to the first support part 21 and the second support part 31 and on the positive side of the Z-axis with respect to the sliding mechanism 54 of the pulling mechanism 51.

[0045] As in Fig. As shown in Figures 1 to 3, the cutting mechanism 61 comprises a first guide mechanism 62, a first drive mechanism 63, the receiving mechanism 64, a holding mechanism 65, the cutting blade 66, second guide mechanisms 67 and a second drive mechanism 68.

[0046] As in Fig. As shown in Figure 3, the first guide mechanism 62 comprises the guide rail 62a and a holder 62b. The guide rail 62a extends in the X-axis direction and is, for example, attached to a surface of a support element 62c on the positive side of the Y-axis, the support element 62c extending in the X-axis direction between the frame part 11 of the winding machine 1 on the positive side of the X-axis and the frame part 11 of the winding machine 1 on the negative side of the X-axis. It should be noted that the support element 62c is, for example, a rectangular element.

[0047] The holder 62b is slidably positioned along the guide rail 62a and engages with the guide rail 62a. The holder 62b has, for example, an inverted L-shape when viewed from the direction of the X-axis and comprises a horizontal part that covers a surface of the support element 62c on the positive side of the Z-axis, and a vertical part that extends from the end of the horizontal part on the positive side of the Y-axis to the negative side of the Z-axis and covers a surface of the support element 62c on the positive side of the Y-axis, and the guide rail 62a engages with a groove section formed in the vertical part.

[0048] The first drive mechanism 63 moves the holder 62b along the guide rail 62a. As in Fig. As shown in Figure 2, the first drive mechanism 63 comprises 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.

[0049] For example, the motor 63a is attached via a first bracket (not shown) at the end of the support element 62c in the first guide mechanism 62 on the negative side of the X-axis, and a drive shaft of the motor 63a projects towards the negative side of the Y-axis. As shown in Fig. As shown in Figure 2, the first pulley 63b is attached to the drive shaft of the motor 63a.

[0050] The coupling 63c can, for example, be any ordinary coupling mechanism capable of switching between transmitting and interrupting a driving force. The coupling 63c is, for instance, attached to the end of the support element 62c in the first guide mechanism 62 on the negative side of the X-axis and near the motor 63a via a second bracket (not shown). However, the coupling 63c can also be omitted.

[0051] As in Fig. As shown in Figure 2, the second pulley 63d is, for example, attached to a drive shaft that projects from the clutch 63c in the direction of the negative Y-axis. The first belt 63e is an endless 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 part of the first drive mechanism 63.

[0052] The third pulley 63f is attached to an output shaft that projects from the coupling 63c in the direction of the positive Y-axis. The fourth pulley 63g is located at the end of the support element 62c in the first guide mechanism 62 on the positive side of the X-axis via a third bracket 63i (see Fig. 3) so that it can rotate around the Y-axis.

[0053] The second belt 63h is an endless belt and extends between the third pulley 63f and the fourth pulley 63g, as shown in Fig. 2 shown. The third pulley 63f, the fourth pulley 63g and the second belt 63h form an output-side transmission part of the first drive mechanism 63.

[0054] The holder 62b of the first guide mechanism 62 is attached to the second belt 63h. Thus, a driving force from the motor 63a is transmitted via the first pulley 63b, the first belt 63e, the second pulley 63d, the clutch 63c and the third pulley 63f to the second belt 63h, and the holder 62b moves in the X-axis direction according to the movement of the second belt 63h, which is rotated in the X-axis direction between the third pulley 63f and the fourth pulley 63g.

[0055] 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 part that transmits the drive force of the motor 63a to the holder 62b of the first guide mechanism 62.

[0056] It should be noted that the weight of the second pulley 63d is preferably greater than that of the first pulley 63b, the third pulley 63f, and the fourth pulley 63g. This configuration allows a large amount of rotational energy stored by the rotation of the second pulley 63d to be transferred via the clutch 63c to the holder 62b. In other words, the second pulley 63d acts as a reinforcing element, increasing the driving force of the motor 63a.

[0057] As described above, the receiving mechanism 64 comes into contact with the holder 62b, which moves in the X-axis direction, at the starting position of the holder 62b and receives the holder 62b. If, for example, the end of the support element 62c of the first guide mechanism 62 is set on the positive side of the X-axis as the starting position of the holder 62b, the receiving mechanism 64 is positioned as shown in Fig. 3 shown attached to the end of the support element 62c on the positive side of the X-axis.

[0058] Thus, the receiving mechanism 64 can receive the holder 62b, which moves from the holder 62b's initial position towards the positive side of the X-axis. However, the position of the receiving mechanism 64 can be changed as needed, corresponding to the initial position of the holder 62b.

[0059] The holding mechanism 65 temporarily holds the holder 62b of the first guide mechanism 62 in the starting position of the holder 62b. As in Fig. As shown in Figure 3, the holding mechanism 65 comprises a first magnet 65a and a second magnet 65b, which can be magnetically connected to each other.

[0060] At this point, the magnetic connection force between the first magnet 65a and the second magnet 65b is a magnetic connection force with 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 transferred to the holder 62b.

[0061] However, if the first magnet 65a and the second magnet 65b are made of electromagnets, the magnetic connection force can be controlled by controlling the currents supplied to the first magnet 65a and the second magnet 65b.

[0062] The first magnet 65a, for example, is attached to the holder 62b, as shown in Fig. Figure 3 illustrates this. The first magnet 65a, for example, is attached to a surface of the horizontal part of the holder 62b on the positive side of the Z-axis. The second magnet 65b is attached to a part of the winding machine 1, which is stopped when the holder 62b moves such that the second magnet 65b is magnetically connected to the first magnet 65a when the holder 62b of the first guide mechanism 62 is in its starting position.

[0063] For example, in Fig. As shown in Figure 3, the second magnet 65b is attached to the third bracket 63i to secure the fourth pulley 63g to the support element 62c of the first guide mechanism 62 via a bracket 65c. It should be noted that the bracket 65c, viewed from the Y-axis direction, has an inverted T-shape and comprises a vertical part extending in the Z-axis direction and a horizontal part projecting from one end of the vertical part on the negative side of the Z-axis towards the positive and negative sides of the Y-axis.

[0064] As in Fig. As shown in Figure 3, the bracket 65c projects from the third bracket 63i to attach the fourth pulley 63g to the support element 62c of the first guide mechanism 62 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. The second magnet 65b, for example, is attached to a surface of the horizontal part of the bracket 65c on the negative side of the Z-axis.

[0065] For example, the first magnet 65a and the second magnet 65b overlap in the Z-axis direction and are magnetically connected to each other when the holder 62b of the first guide mechanism 62 is in its initial position, so that the holder 62b can be temporarily held in its initial position. It should be noted that the positions of the first magnet 65a and the second magnet 65b are not limited to those described above, but can be any position in which the holder 62b can be temporarily held in its initial position.

[0066] The cutting blade 66 protrudes from the holder 62b of the first guide mechanism 62 in the direction of the positive side of the Y-axis. As will be described later, each of the second guide mechanisms 67 guides the cutting blade 66 such that the cutting blade 66 comes into contact with the film material 2 arranged between the first roller 52a of the pulling mechanism 51 and the second winding core 4 in a state in which the pulling mechanism 51 pulls the film material 2 towards the second winding core 4.

[0067] Each of the second guide mechanisms 67 can consist of an ordinary linear rail, and they are arranged at intervals in the X-axis direction. Furthermore, a guide rail of the second guide mechanism 67 is attached to the frame part 11 of the winding machine 1, and a carriage that slides along the guide rail is attached to the support element 62c of the first guide mechanism 62.

[0068] At this point, for example, the guide rail of the second guide mechanism 67 is arranged such that it is gradually inclined in the direction of the negative Z-axis to the positive Y-axis, so that the cutting knife 66 can be guided by the first guide mechanism 62 to the film material 2, which is arranged between the first roller 52a of the tension mechanism 51 and the second winding core 4, as described above.

[0069] The second drive mechanism 68 moves the slide of the second guide mechanism 67. The second drive mechanism 68 can, for example, be a cylinder, as in Fig. 1 shown, and one end of the second drive mechanism 68 is connected to the slide of the second guide mechanism 67, and the other end of the second drive mechanism 68 is connected to the frame part 11 of the winding machine 1.

[0070] In this way, the cutting blade 66 can be moved along the guide rail of the second guide mechanism 67 by the extension and contraction of the second drive mechanism 68 via the slide of the second guide mechanism 67 and the first guide mechanism 62.

[0071] Next, a process is described in which the winding of the film material 2 is shifted from the first winding core 3 to the second winding core 4 using the winding machine 1 according to this embodiment. Fig. Figures 4 to 7 are diagrams illustrating the process in which the winding of the film material is shifted from the first winding core to the second winding core using the winding machine according to this embodiment. Fig. Figure 8 is a diagram showing a state in which the film material is drawn into the second winding core using the pulling mechanism of the winding machine according to this embodiment. It should be noted that each of the Fig. Figures 4 to 7 are simplified and partially presented in perspective for the sake of clarity. Fig. Figure 8 has been simplified for clarity.

[0072] Initially, as in Fig. Figure 1 shows the first winding core 3 for winding the film material 2 fed by the feed roller 41. Then, while the winding of the film material 2 continues through the first winding core 3, the first winding core 3 rotates counterclockwise through the first support part 21, as shown in the Fig. 4 and Fig. 5 shown from the positive side of the X-axis.

[0073] At this point, the second winding core 4 is, for example, located on the positive side of the Z-axis with respect to the first winding core 3. Furthermore, viewed, for example, from the positive side of the X-axis, the first arm part 53a of the tensioning mechanism 51 has been rotated furthest counterclockwise with respect to the second arm part 53b, and the second arm part 53b has been rotated furthest clockwise with respect to the sliding plate 54a of the tensioning mechanism 51.

[0074] Furthermore, for example, the sliding plate 54a of the pulling mechanism 51 is arranged on the most negative side of the Y-axis. Furthermore, for example, the holder 62b of the first guide mechanism 62 is arranged at its initial position (e.g., the end of the guide rail 62a of the first guide mechanism 62 on the positive side of the X-axis) in a state in which the first guide mechanism 62 of the cutting mechanism 61 is arranged on the most negative side of the Y-axis.

[0075] When the amount of film material 2 wound through the first winding core 3 approaches a predetermined amount, as in Fig. As shown in Figure 6, viewed from the positive side of the X-axis, the first winding core 3 rotates counterclockwise through the first support part 21, the second winding core 4 rotates counterclockwise through the second support part 31, and the second winding core 4 comes into contact with the film material 2 between the first winding core 3 and the feed roller 41 from the positive side of the Z-axis. At this point, the second winding core 4 is rotating.

[0076] Next, the drive mechanism 54c of the tension mechanism 51 is actuated, causing the contact part 52 and the arm mechanism 53 to move across the sliding plate 54a towards the positive side of the Y-axis. Then, the first cylinder 53c of the tension mechanism 51 is contracted, the first arm part 53a is rotated clockwise (viewed from the positive side of the X-axis), and the first roller 52a comes into contact with the film material 2 between the first winding core 3 and the second winding core 4 from the negative side of the Z-axis. At this point, the first arm part 53a is bent counterclockwise relative to the second arm part 53b (viewed from the positive side of the X-axis).

[0077] Next, the second cylinder 53d of the pulling mechanism 51 is extended, the second arm part 53b is rotated counterclockwise from the positive side of the X-axis, and the first roller 52a pulls the film material 2 between the first winding core 3 and the second winding core 4 to the side of the second winding core 4, so that a part of the film material 2 between the first winding core 3 and the second winding core 4 is wound around the second winding core 4 on the negative side of the Y-axis with the first roller 52a in between in the direction of the rotation of the second winding core 4.

[0078] 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 in the direction of the positive Y-axis. At this point, the cutting blade 66 of the cutting mechanism 61 is positioned outside the first support part 21 and the second support part 31 in the X-axis direction when viewed from the Y-axis direction. For example, it is positioned on the positive side of the X-axis with respect to the film material 2 when viewed from the Y-axis direction.

[0079] Next, the first cylinder 53c of the traction mechanism 51 is extended, and as in Fig. As shown in Figure 7, the first arm part 53a is rotated counterclockwise from the positive side of the X-axis, and the first roller 52a pulls the film material 2 between the first winding core 3 and the second winding core 4 to the side of the second winding core 4, so that the part of the film material 2 between the first winding core 3 and the second winding core 4 on the negative side of the Y-axis with the first roller 52a in between is wound further around the second winding core 4 in the direction in which the second winding core 4 is rotating.

[0080] This means that the traction mechanism 51 moves the first roller 52a to wind the film material 2 between the first winding core 3 and the second winding core 4 around the second winding core 4 in the direction in which the second winding core 4 rotates. At this point, one end of the cutting blade 66 is positioned on the positive side of the Y-axis such that it overlaps the film material 2 located between the second winding core 4 and the first roller 52a when viewed from the direction of the X-axis.

[0081] It should be noted that, as in Fig. Figure 8 shows that one end of the first roller 52a of the traction mechanism 51 is arranged on the negative side of the Y-axis, preferably on the negative side of the Y-axis, which is the side in the direction in which the second winding core 4 rotates with respect to the central axis AX3 of the second winding core 4, in a state in which the first roller 52a is arranged with respect to the second winding core 4 on the positive side of the Z-axis.

[0082] This configuration allows the positive end of the Z-axis of the portion of the film material 2 between the first winding core 3 and the second winding core 4 to be positioned on the negative side of the Y-axis, with the first roller 52a positioned between them, relative to the central axis AX3 of the second winding core 4, and as will be described later, when the film material 2 arranged between the second winding core 4 and the first roller 52a is cut, a tip of the film material 2 can be dropped by its own weight such that the tip of the film material 2 is pulled by the rotation of the second winding core 4.

[0083] As in Fig. As shown in Figure 8, the third roller 52c of the traction mechanism 51 preferably presses the film material 2 against the side of the second winding core 4. In this way, a state in which the film material 2 is wound around the second winding core 4 can be reliably maintained.

[0084] At this point, the third roller 52c, viewed from the X-axis direction, preferably presses the film material 2 against the side of the second winding core 4 near a contact point where a straight line formed along the film material 2 between the second winding core 4 and the first roller 52a of the tensioning mechanism 51 comes into contact with the second winding core 4. In this way, the penetration of air bubbles and the stress on the film material 2 during winding of the film material 2 onto the second winding core 4 can be reduced.

[0085] As in Fig. As shown in Figure 8, it is also advantageous if one end of the second arm section 53b of the pulling mechanism 51, viewed in the direction of the X-axis, is arranged on the positive side of the Z-axis with respect to the central axis AX3 of the second winding core 4, corresponding to the curved shape of the second arm section 53b. In this way, when the first arm section 53a is rotated towards the second winding core 4, the portion of the film material 2 between the first winding core 3 and the second winding core 4 on the negative side of the Y-axis, with the first roller 52a located between them, can be further wound around the second winding core 4.

[0086] Next, the motor 63a is rotated in a state where the clutch 63c of the cutting mechanism 61 is pre-disengaged, and when the speed of the motor 63a reaches or exceeds a preset speed, the clutch 63c is engaged. In this way, the driving force of the motor 63a is transmitted to the cutting blade 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 holder 62b.

[0087] Then the magnetic connection between the first magnet 65a and the second magnet 65b of the holding mechanism 65 is released, and the cutting blade 66 moves to the negative side of the X-axis to cut the film material 2 located between the second winding core 4 and the first roller 52a of the tensioning mechanism 51. If, at this point, the second pulley 63d acts as a reinforcing element, a large amount of rotational energy can be transferred to the cutting blade 66, and the cutting blade 66, accelerated from the outside of the first support element 21 and the second support element 31, cuts the film material 2 in such a way that it intersects it. In this way, the film material 2 can be satisfactorily cut.

[0088] The winding of the film material 2 through the second winding core 4 is then 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 point, the film material 2 located 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.

[0089] When the winding of the film material 2 is shifted 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 in the direction of the second winding core 4, so that the part of the film material 2 between the first winding core 3 and the second winding core 4 is wound around the second winding core 4 on the negative side of the Y-axis with the first roller 52a in between in the direction of the rotation of the second winding core 4.

[0090] Therefore, the area in which the film material 2 comes into contact with the second winding core 4 is larger than in an ordinary winding machine when the winding of the film material 2 is shifted from the first winding core 3 to the second winding core 4, and the film material 2 can be satisfactorily wound through the second winding core 4. Afterwards, the [unclear] in the Fig. States 1 and 4 to 7 shown are repeated while the first winding core 3 and the second winding core 4 are exchanged, allowing the foil material 2 to be wound continuously.

[0091] Fig. Figure 9 is a diagram illustrating a position at which the cutting knife stops in the winding machine according to this embodiment. If the holding mechanism 65 for the holder 62b is not provided, the holder 62b receives a reaction force from the receiving mechanism 64, and as shown in Fig. As shown in Figure 10, not only the holder 62b but also the cutting blade 66 cannot be stopped precisely at their starting positions. This means that the position at which the cutting blade 66 stops can be different each time the film material 2 is cut.

[0092] Therefore, the position at which the cutting blade 66 moves in the direction of the negative side of the X-axis to cut the foil material 2 differs with each cut of the foil material 2, which results in a difference in the acceleration distance of the cutting blade 66 and thus fluctuations in the speed at which the foil material 2 is cut occur, so that the cut surface of the foil material 2 can be affected.

[0093] In contrast, since the winding machine 1 according to this embodiment includes the holding mechanism 65, the holder 62b can be held precisely in its initial position by the magnetic connecting force of the holding mechanism 65, even when the holder 62b comes into contact with the receiving mechanism 64 and receives a reaction force from the receiving mechanism 64 when the holder 62b is moved to the positive side of the X-axis and returns to its initial position after the cutting blade 66 of the cutting mechanism 61 has cut the film material 2, as shown in Fig. 9 shown.

[0094] In this way, the position at which the cutting blade 66 begins to move towards the negative side of the X-axis can be kept essentially the same for each cut of the film material 2. This ensures that the acceleration distance of the cutting blade 66 is essentially the same for each cut of the film material 2, and reduces variations in the speed at which the film material 2 is cut, thus improving the cutting performance of the film material 2.

[0095] As described above, with the cutting mechanism 61, the winding machine 1 and the winding method according to this embodiment, it can be ensured that the acceleration distance of the cutting knife 66 is essentially the same for each cutting of the film material 2 and that fluctuations in the speed at which the film material 2 is cut can be reduced, so that the performance when cutting the film material 2 can be improved.

[0096] If the holding mechanism is a contact mechanism and is configured to hold the holder 62b in its initial position, foreign matter such as fragments of a holding element can also be generated when the holding element comes into contact with it. However, the holding mechanism 65 according to this embodiment is configured to hold the holder 62b in its initial position without contact using a magnetic connecting force. Therefore, the possibility of foreign matter formation can be reduced, thereby minimizing the possibility of contamination by foreign matter during the winding of the film material 2.

[0097] The present disclosure is not limited to the embodiments described above and may be modified as necessary without departing from the spirit of the present disclosure.

[0098] For example, the winding machine 1 according to the embodiment described above is an example of a winding machine in which the cutting mechanism 61 is used, and components of an ordinary winding machine can be used as components of the winding machine 1 that do not belong to the cutting mechanism 61.

[0099] 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 embodiment are examples, and it is sufficient that components are included by which the cutting blade 66 can be moved closer to the film material 2 or moved in the X-axis direction when the film material 2 is cut.

[0100] For example, according to the above embodiment, the cutting mechanism 61 includes a receiving mechanism 64, but this can also be omitted.

[0101] This application is based on Japanese patent application No. 2023-54808, filed on March 30, 2023, and claims priority therefrom. The entire contents of that application are hereby incorporated by reference. List of reference symbols 1 WRAPPING MACHINE 2 FOIL MATERIAL 3 FIRST WINDING CORE 4 SECOND WINDING CORE 11 FRAME PART OF THE WRAPPING MACHINE 21 FIRST SUPPORT PART 31 SECOND SUPPORT PART 41 Feed Roller 51 TRAIN MECHANISM 52 CONTACT PART, 52a FIRST ROLLER, 52b SECOND ROLLER, 52c THIRD ROLLER 53 ARM MECHANISM, 53a FIRST ARM PART, 53b SECOND ARM PART, 53c FIRST CYLINDER, 53d SECOND CYLINDER 54 SLIDING MECHANISM, 54a SLIDING PLATE, 54b LINEAR RAIL, 54c DRIVE MECHANISM, 54d GUIDE RAIL 61 CUTTING MECHANISM 62 FIRST GUIDE MECHANISM, 62a GUIDE RAIL, 62b BRACKET, 62c SUPPORT ELEMENT 63 FIRST DRIVE MECHANISM, 63a ENGINE, 63b FIRST PULLEY, 63c CLUTCH, 63d SECOND PULLEY, 63e FIRST BELT, 63f THIRD PULLEY, 63g FOURTH PULLEY, 63h SECOND BELT, 63i THIRD BRACKET 64 RECORDING MECHANISM 65 Holding mechanism, 65a First magnet, 65b Second magnet, 65c Mounting 66 CUTTING KNIVES 67 LEADERSHIP MECHANISM 68 DRIVE MECHANISM AX1 Rotating axle of the first support part and the second support part AX2 CENTER AXIS OF THE FIRST WINDING CORE AX3 CENTER AXIS OF THE SECOND WINDING CORE QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2019-59587

[0003] JP 2023-54808

[0101]

Claims

[1] Cutting mechanism used in a winding machine configured for winding a film material in roll form, wherein the cutting mechanism is configured to cut the film material by moving a cutting blade in a left / right direction of the winding machine and comprises: a guide mechanism configured to guide the cutting blade in the left / right direction of the winding machine; a drive mechanism configured to move the cutting blade in the left / right direction of the winding machine; and a holding mechanism configured to hold the cutting blade in a preset starting position, wherein the holding mechanism comprises a first magnet provided in the cutting blade and a second magnet provided in a part of the winding machine which is stopped when the cutting blade moves, and wherein the first magnet and the second magnet are magnetically connected to each other in the starting position. [2] Cutting mechanism according to claim 1, wherein The drive mechanism comprises a motor and a drive transmission part configured to transmit a drive force from the motor to the cutting blade. the drive transmission part comprises a coupling arranged between the motor and the cutting blade, an input-side transmission part between the motor and the coupling, and an output-side transmission part between the coupling and the cutting blade, and The input-side transmission part includes a gain component configured to increase the driving force of the motor. [3] Cutting mechanism according to claim 1 or 2, wherein the cutting mechanism comprises a receiving mechanism configured to receive the cutting knife in a state in which the cutting knife has been moved back and forth in the left / right direction of the winding machine and has then returned to its starting position. [4] Cutting mechanism according to claim 1 or 2, wherein a magnetic connection between the first magnet and the second magnet is released when a driving force of the drive mechanism is transferred to the cutting blade. [5] Cutting mechanism according to claim 1 or 2, wherein the first magnet and the second magnet are electromagnets. [6] Cutting mechanism according to claim 1 or 2, wherein the film material is a long resin film. [7] Winding machine comprising the cutting mechanism according to claim 1 or 2. [8] Cutting method for cutting a film material wound in roll form by moving a cutting knife in a left / right direction of a winding machine, wherein, when the cutting knife has moved back and forth in the left / right direction of the winding machine and has then returned to a preset starting position, a first magnet provided in the cutting knife and a second magnet provided in a part of the winding machine which is stopped when the cutting knife moves, are magnetically connected to each other and the cutting knife is held in the starting position.

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