Turret-type belt attachment device with belt change without facilities shutdown

Abstract

This invention relates to a turret-type belt attachment device capable of belt replacement without any facility downtime. The device includes: a rotating unit with a rotating axis and a plurality of turrets, the turrets including a first turret and a second turret connected to the rotating axis; a plurality of shafts, including a first shaft and a second shaft, respectively mounted at the ends of the first and second turrets; a first belt reel mounted on the first shaft with a first belt wound on it for use; a belt sensing sensor for sensing a lower limit of the diameter of the wound first belt; a shaft guide for guiding movement of the first shaft during rotation of the rotating unit; a belt replacement unit for mounting a second belt reel with a new second belt wound on it on an empty second shaft; and a cutter mounted on the rotating axis to cut the first belt.

Description

Technical Field

[0001] The present invention relates to a tape attachment device, and more specifically, to a turret-type tape attachment device capable of tape replacement without any facility downtime. Background Technology

[0002] Currently, with the emergence of electrode sliding control technology, methods are being researched for using tape to prevent contact between the sliding component and the electrode, as well as methods for etching the sliding component using lasers. Among these, the tape-attach method is cheaper and has a simpler structure compared to lasers, but it requires periodic tape replacement, making facility downtime unavoidable. Due to continuous roll-to-roll processes, facility downtime other than electrode failure inevitably leads to significant losses, necessitating a device capable of tape replacement without any facility downtime. Furthermore, this device, in addition to sliding control technology, can be applied to all processes requiring tape attachment. Summary of the Invention

[0003] Technical issues

[0004] Therefore, the object of the present invention is to provide a tape attachment device that minimizes lost time due to facility downtime by eliminating facility downtime procedures for tape replacement during the tape attachment process.

[0005] Technical solution

[0006] To achieve the above objectives, the present invention provides a belt attachment device comprising: a rotating unit having a rotating axis and a plurality of turrets, the plurality of turrets including a first turret and a second turret, the first turret and the second turret being connected to the rotating axis; a plurality of shafts including a first shaft and a second shaft, the first shaft and the second shaft being respectively mounted at the ends of the first turret and the second turret; a first reel mounted on a first shaft and having a first belt wound on it for use; a belt sensing sensor for sensing the diameter of the wound first belt; a shaft guide for guiding the movement of the first shaft during rotation of the rotating unit; a belt replacement unit for mounting a second reel with a new second belt wound on it on an empty second shaft; and a cutter mounted on the rotating axis for cutting the first belt.

[0007] In this invention, multiple turrets and multiple axes can be composed of n turrets (n is an integer of 2 or greater) and n axes respectively, and the n turrets and n axes can each be set at an angle of 360 / n.

[0008] In this invention, the first turret and the second turret may each include a first slit and a second slit, and the first shaft and the second shaft can move through the first slit and the second slit.

[0009] In this invention, when the first shaft moves along the shaft guide, the first shaft can move along the first slit.

[0010] In this invention, the shaft guide can be configured to form a chord with the rotation radius of the rotating unit.

[0011] In this invention, the belt replacement unit may include a mounting bracket and a pusher. The mounting bracket is equipped with a plurality of second belt reels, and the pusher pushes the second belt reels to mount them onto the second shaft.

[0012] In this invention, the cutter can be integrally mounted on the rotation axis and consists of n cutters (n is an integer of 2 or greater) along the circumferential direction of the rotation axis, and the n cutters can be set at an angle of 360 / n.

[0013] In this invention, a band sensing sensor can be arranged to sense the lower limit of the diameter of the first band, and if the band sensing sensor senses the lower limit of the diameter of the first band, the rotation of the rotating unit can begin, and then the first axis can move linearly along the axis guide.

[0014] In this invention, if the second shaft is rotated to the position of the belt replacement unit, the second belt reel can be mounted on the second shaft and can then be rotated further until the second belt contacts the first belt.

[0015] In this invention, if the second belt contacts the first belt, the first and second belts can be bonded together by an adhesive material applied to the starting portion of the second belt, while the unbonded portion of the first belt can be automatically cut by a cutter. Any combination between all claims, any combination between all elements, and any combination between all embodiments is possible.

[0016] Beneficial effects

[0017] According to the present invention, by eliminating the facility downtime procedure for replacing the belt during the belt bonding process, the lost time due to facility downtime can be minimized.

[0018] Furthermore, according to the present invention, apart from an initial operation, there is no process of a worker manually attaching the belt to the electrode, which reduces the detour error of the worker when changing the belt.

[0019] Furthermore, this invention can be applied to other processes that require continuous tape attachment.

[0020] Furthermore, according to the present invention, it can be applied to 3-turret, 4-turret, etc., depending on the available installation space. Attached Figure Description

[0021] Figure 1 This is a perspective view showing a conventional attachment device.

[0022] Figure 2 This is a side view showing a turret-type attachment device according to the present invention.

[0023] Figures 3 to 9 This is a side view showing the overall process flow using the turret-type attachment device according to the present invention.

[0024] Figure 10 and 11 The process flow using the replacement unit according to the invention is shown, wherein from left to right, they are side views of the entire device, and front and side views of the replacement unit.

[0025] Figure 12 This is a side view showing the 3-turret belt attachment device according to the present invention. Detailed Implementation

[0026] The invention will now be described in detail with reference to the accompanying drawings.

[0027] refer to Figure 1 A typical attachment device can consist of a shaft 1, a belt disc 2, a belt 3, a belt sensor 4, a belt gripper 5, a cutter 6, and an XY manual stage 7.

[0028] Shaft 1 is an air shaft, which can be operated by a manual lever. A reel 2 with the belt 3 wound on it can be mounted on shaft 1, and the belt 3 can be unwound (released) from the reel 2 and moved. A belt holder 5 is used to hold the belt during cutting and can be operated by a cylinder. A cutter 6 can be equipped with a cutting blade and can be operated by a cylinder. An XY manual worktable 7 allows for fine adjustment of the position of the belt attachment device and can be equipped with scales for position confirmation, etc.

[0029] In the case of such a conventional belt attachment device, since it consists of a single reel, regular belt replacement is required, making facility downtime unavoidable. Furthermore, due to the continuous roll-to-roll process, facility downtime, in addition to electrode defects, inevitably leads to significant losses.

[0030] The attachment device according to the invention is designed to solve the problem according to Figure 1 The conventional belt attachment device problem can be solved by eliminating the facility downtime process for belt replacement during the belt attachment process, which can minimize the lost time due to facility downtime.

[0031] Reference Figure 2 The belt attachment device according to the present invention can be composed of a rotating unit 10, a rotating axis 11, a first turret 12, a second turret 13, a first slit 14, a second slit 15, a first shaft 20, a second shaft 21, a first belt reel 30, a first belt 31, a belt sensing sensor 40, a shaft guide 50, a second belt reel 60, a second belt 61, a belt replacement unit 70, a mounting bracket 71, a pusher 72, a first cutter 80, a second cutter 81, a nip roll 90, a guide roll 91, etc.

[0032] The rotating unit 10 is used to rotate the first belt disc 30, etc. The first belt disc may have a turret structure, and specifically, it may be provided with a rotating axis 11 and multiple turrets 12, 13. The rotation direction of the rotating unit 10 may be clockwise, such as... Figure 2 As indicated by the large arrow in the diagram. The rotating unit 10 can move the disk 30, the lower limit of which has been sensed away from the path line, and bring the new tape reel 60 into contact with the path line by rotating the turrets 12 and 13 with a motor. Here, the path line refers to the path taken by the tape from unwinding from the reel to being attached to the electrode.

[0033] The rotation axis 11 serves as the rotation center (main shaft) of the rotating unit 10, around which the rotating unit 10 can rotate. The rotating unit 10 can be rotated by a motor or the like, which is suitably supported on a support member, and therefore the rotation axis 11 can be a motor axis. The rotation axis 11 can represent the entire central region of the rotating unit 10 (up to the outermost circle where the cutter is mounted in the figures), including the axis member connected to the motor and the support member supporting the axis member.

[0034] Turrets 12 and 13 are components connected to a rotation axis 11 to rotate together with it. The rotation axis 11 can be constructed as a rod extending radially outward in a long straight line shape. Turrets 12 and 13 can consist of multiple turrets, including a first turret 12 and a second turret 13. Specifically, the multiple turrets can consist of n turrets, and the n turrets can be arranged at an angle of 360 / n. For example, as in... Figure 2 In the case of two turrets 12 and 13, the arrangement interval between the two turrets 12 and 13 can be 180 degrees. Furthermore, as in... Figure 12In this configuration, when there are three turrets, the arrangement interval between the three turrets can be 120 degrees, n is an integer of 2 or greater, and can be, for example, 2 to 10, 2 to 7, or 2 to 4, and the same applies to the shafts and cutters. The number of turrets, shafts, and cutters n is usually the same, but they can also be different from each other independently.

[0035] The first turret 12 and the second turret 13 may each include a first slit 14 and a second slit 15, through which the first shaft 20 and the second shaft 21 are movable. When the first shaft 20 moves along the shaft guide 50 during rotation, the first shaft 20 moves linearly in the horizontal direction. For this linear movement of the first shaft 20, the first shaft 20 needs to move radially inward toward the axis of rotation 11. For this inward movement of the first shaft 20, the first slit 14 is formed in the first turret 12, so that when moving along the shaft guide 50, the first shaft 20 can move inward along the first slit 14. Similarly, the second slit 15 may be formed in the second turret 13, and when multiple turrets exist, a slit may be formed for each turret. The slits 14 and 15 can be formed in the form of thin and long holes or grooves, and can extend radially in a long straight line shape along the longitudinal axis of the turrets 12 and 13, and can be formed in the radial direction from the outer end of the turrets 12 and 13 toward the inner side for a certain length, such as a length, to allow linear movement of the first shaft 20, as described above.

[0036] Shafts 20 and 21 are used to mount pulleys 30 and 60, and can each be movably mounted radially at the outer ends of turrets 12 and 13. That is, the first shaft 20 can be mounted radially at the outer end of the first turret 12, and the second shaft 21 can be mounted radially at the outer end of the second turret 13. Like turrets 12 and 13, shafts 20 and 21 can also consist of multiple shafts, including the first shaft 20 and the second shaft 21. Specifically, the multiple shafts can consist of n shafts, and the n shafts can be arranged at an angle of 360 / n. Shafts 20 and 21 can be mounted radially at the outer ends of turrets 12 and 13. Figure 2 The dotted line in the diagram indicates the radius of rotation. Shafts 20 and 21 can be, for example, air shafts to which reels 30 and 60 are detachably attached.

[0037] The first reel 30 is a housing for storing a first tape 31 in roll form, which can be a reel on which the first tape 31 is wound during current use, and can be mounted on the first shaft 20. The first reel 30 can travel together with the first shaft 20 along the […]. Figure 2 The double-dotted line indicates the radius of rotation. Additionally, the direction of rotation of the first reel 30 and / or the first belt 31 itself (for unwinding or supplying the belt) is determined by... Figure 2The small arrow in the diagram indicates a counter-clockwise direction, which can be opposite to the rotation direction of the rotating unit 10. Figure 2 In this configuration, the upper surface of the first tape 31 can be a pressure-sensitive adhesive surface for adhering / bonding the second tape 61, and the lower surface of the first tape 31 can be a non-pressure-sensitive adhesive surface. A fastening hole or groove for fastening the first shaft 20 can be formed at the center of the first tape 30 and also applied to the second tape 60.

[0038] The belt sensing sensor 40 is a sensor that senses the lower limit of the diameter of the first belt 31 wound around the first belt reel 30, where diameter can refer to the diameter of the first belt 31 wound in a circular coil shape around the first belt reel 30, and the lower limit of diameter can refer to the minimum diameter setting for belt replacement. When the first belt 31 is used, the diameter of the circular coil shape of the first belt 31 gradually decreases, and the belt sensing sensor 40 can sense if the first belt 31 reaches the set lower limit of diameter (minimum diameter). The belt sensing sensor 40 can be positioned at an appropriate location adjacent to the center of the first belt reel 30 to sense the lower limit of the diameter of the first belt 31. Figure 2 The position in the image is merely illustrative and not limited thereto. It can be supported on a support or similar component in an appropriate manner and can consist of a photoelectric sensor or similar component. Based on the diameter of the circular roll before use (initial diameter), the lower limit of the diameter can be, for example, 10% or less, 5% or less, 3% or less, or 1% or less of the diameter before use.

[0039] The shaft guide 50 is designed to guide the movement of the first shaft 20 during the rotation of the rotating unit 10. Specifically, when the first pulley 30, whose lower diameter limit has been sensed, moves away from the path line, the shaft guide 50 can minimize the positional change of the path line. Specifically, it can hold the first pulley 31 in a horizontal position, for example, at the start of the rotational movement of the first pulley 30 for replacement. The shaft guide 50 can be horizontally positioned below the rotation axis 11 and can be constructed in the form of a plate or strip extending in a horizontally straight line. In particular, as... Figure 2As shown, the shaft guide 50 can be configured to form a chord with the circle of the rotation radius of the rotating unit 10. As described above, when the first shaft 20 moves along the shaft guide 50, the first shaft 20 can move radially inward along the first slit 14 from one end (right end in the figure) of the shaft guide 50 to the center (middle) of the shaft guide 50, which is one of the two intersection points (starting point) of the circle of the rotation radius of the rotating unit 10. Then, after the shaft guide 50 is maximally displaced and positioned at the radially inner end of the first slit 14 from the center of the guide 50, it can again move radially outward from the center of the shaft guide 50 to the other end (left end in the figure), which is the other end (end point) of the two intersection points. The shaft guide 50 can be supported and fixed to a support or the like in a suitable manner, and can have a length sufficient to form a chord with the circle of the rotation radius.

[0040] The second reel 60 is a housing for storing a second tape 61 in roll form. The second reel 60 can be a replacement reel for the first reel 30, i.e., a reel wound with a newly replaced second tape 61 for the purpose of replacing a nearly fully used first tape 31. The second reel 60 can be mounted on an empty second shaft 21 and can rotate together with the second shaft 21 along the radius of rotation. Furthermore, the rotation direction of the second reel 60 and the second tape 61 themselves can be counterclockwise, opposite to the rotation direction of the rotating unit 10. The second reel 60 is in a standby state on the mounting bracket 71 of the tape replacement unit 70, i.e., outside the radius of rotation of the rotating unit 10. Then, if the second shaft 21 reaches the designated replacement position, it can be mounted on the second shaft 21 when it enters the radius of rotation of the rotating unit 10. Simultaneously, an adhesive material (adhesive) is applied to the unwinding start portion of the second tape 61 to facilitate engagement with the first tape 31.

[0041] The belt replacement unit 70 is used to replace the nearly exhausted first belt reel 30 with a new second belt reel 60 that is in standby mode. The belt replacement unit 70 is designed to mount the second belt reel 60, which is wound with a new second belt 61, onto the empty second shaft 21. The belt replacement unit 70 can be located near the second shaft 21 at a replacement position within the rotation radius of the rotating unit 10, and can be supported in a suitable manner by a support member or the like.

[0042] Reference Figure 10 and 11The replacement unit 70 may consist of a mounting frame 71 and a pusher 72, etc. The mounting frame 71 stores the second reels 60, and multiple second reels 60 can be vertically aligned within the mounting frame 71 and sequentially mounted on the mounting frame 71 from the outside to the inside. Multiple locking jaws for securing the second reels 60 may be formed on the upper and / or lower parts of the mounting frame 71. The pusher 72 pushes the second reels 60 to mount them onto a second shaft 21. The second shaft 21 may be driven by a conventional drive device such as a cylinder, and can reciprocate horizontally (forward and backward). It may be mounted inside or outside the mounting frame 71. If the pusher 72 pushes the second reel located at the innermost or outermost side of the mounting bracket 71 toward the direction of the second shaft 21, the second reel 60 located at the outermost side of the mounting bracket 71 on the side of the second shaft 21 can leave the mounting bracket 71 and be mounted on the second shaft 21, while multiple second reels 60 are pushed to the outside of the mounting bracket 71 located on the side of the second shaft 21 by a space.

[0043] Cutters 80 and 81 are used to cut the first band 31, which can cut the first band 31 after the second band 61 is engaged. Cutters 80 and 81 can be mounted on the rotation axis 11, and specifically, can be integrally mounted on the rotation axis 11 and can rotate together with the rotation axis 11. Similar to turrets 12 and 13 and shafts 20 and 21, cutters 80 and 81 can also be configured as multiple cutters, including a first cutter 80 and a second cutter 81. Specifically, the multiple cutters can consist of n cutters along the circumferential direction of the rotation axis 11, and the n cutters can be arranged at an angle of 360 / n. Cutters 80 and 81 can consist of edge blades formed by radially outward projection from the outer surface of the rotation axis 11, and can have a shape based on a cross-section such as a triangle, and can be composed of right-angled triangles, especially for ease of cutting, and in this case, the vertical plane of each cutter can be oriented in the same rotational direction.

[0044] The clamping roller 90 is used to rotatably and movablely support the reels 30, 60 and / or the belts 31, 61. The clamping roller 90 may be disposed below the reels 30, 60 and may be in close contact with the belts 31, 61 to movablely support the belts. The guide roller 91 is used to guide the movement of the belts 31, 61, which may be disposed in one or more rollers.

[0045] The attachment device according to the present invention ( Figure 2 ) and existing devices ( Figure 1In comparison, this invention utilizes a turret structure instead of the existing single belt reel, whereby the belt reel can be mounted multiple times on the air shaft. Furthermore, in this invention, an integrated cutter is mounted on the rotation axis instead of on the existing cutting unit, which can automatically cut when intersecting the path line. In particular, the belt attachment device according to the invention can also incorporate new units, such as a rotation unit, shaft guide, and belt replacement unit, which are not already present in existing devices, and multiple air shafts, belt reels, and cutters can be mounted on the turret structure.

[0046] In the following text, reference will be made to Figures 2 to 9 The operation of the turret-type attachment device according to the present invention is described.

[0047] 1) The sensing sensor 40 senses the lower limit of the diameter of the first band 31 (see...) Figure 2 The lower limit of the diameter can be a preset value. At this time, the first pulley 30 can be in close contact with the clamping roller 90 and can be positioned at one (right) end (starting point position) of the shaft guide 50, and the first shaft 20 can be positioned at the radially outer end of the first slit 14. The second pulley 60 is still in standby state, so that it is in Figure 2 The middle is indicated by a dashed line.

[0048] 2) The rotation of the rotating unit 10 begins with the rotation of the rotation axis 11, which is the motor axis (see...). Figure 2 At this time, the rotation of the rotating unit 10 can be clockwise. Meanwhile, even during rotation, the first belt 31 can be unwound from the first belt reel 30 and used continuously.

[0049] 3) The first pulley 30 moves linearly along the shaft guide 50 (see...) Figure 3 (In the diagram, it moves horizontally from right to left). At this time, the first shaft 20 and the first belt reel 30 mounted on it can move together horizontally in a straight line along the shaft guide 50, and the first shaft 20 can shift inward and outward along the first slit 14, thereby continuously maintaining the linear horizontal movement of the first belt reel 30 and the first belt 31. The linear movement of the first belt reel 30 and the first belt 31 minimizes changes in the position of the path line. Figure 3 In this process, the first shaft 20 is positioned at the radially inner end of the first slit 14 from the center position of the guide 50, while being in a state of maximum displacement to the inner side in the radial direction.

[0050] 4) The first pulley 30 reaches the opposite (left) end (endpoint position) of the shaft guide 50 (see... Figure 4 The first shaft 20 can be radially positioned again at the outer end of the first slit 14. Since the shaft guide 50 is arranged in the form of a chord in the circle of the rotation radius of the first disc 30, the two intersection points of the circle of rotation radius and the shaft guide 50 can be the start and end points of the shaft guide 50, respectively.

[0051] 5) When the first pulley 30 reaches the end position of the shaft guide 50, the empty second shaft 21, located on the opposite side of the rotation radius from the first shaft 20, simultaneously reaches the position of the new second pulley 60 during standby (see...). Figure 4 The second reel 60 is in an uninstalled state, so it is still controlled by... Figure 4 The dashed line indicates this.

[0052] 6) If the second shaft 21 is rotated to the position of the belt replacement unit 70, a new second belt reel 60 is installed on the second shaft 21 via the belt replacement unit 70 (see...). Figure 5 The second reel 60 is in its current installed state, making it in Figure 5 The solid line indicates the middle.

[0053] 7) After the second belt disc 60 is mounted on the second shaft 21, the rotating unit 10 continues to rotate clockwise (see...). Figure 6 The first belt 31 is still unwound from the first belt reel 30 and is still in use.

[0054] 8) As rotation continues, the second belt 61 wound on the new second reel 60 comes into contact with the existing belt path 31, thereby joining the two belts 31, 61 (see...). Figure 7 In manufacturing the second strip 61, an adhesive material is applied to the surface of the unwinding starting portion, so that the joining of the first strip 31 and the second strip 61 can be easy.

[0055] 9) Simultaneously with the contact (joining) of the two tapes 31 and 61, the existing tape path 31 is cut by the second cutter 81 (see...). Figure 7 Specifically, if the second strip 61 contacts the first strip 31, the unjoined portion of the first strip 31 can be automatically cut simultaneously by the second cutter 81, while the first strip 31 and the second strip 61 are joined together by an adhesive material applied to the unwinding starting portion of the second strip 61. At this time, since the integrated cutters 80 and 81 are mounted on the rotation axis 11, the first strip 31 can be automatically cut when the path line of the second cutter 81 intersects with that of the first strip 31, and the second cutter 81 contacts the first strip 31 and then applies force to the first strip 31.

[0056] 10) After the rotating unit 10 rotates further, a new path line 61 is created (see...). Figure 8 The existing first belt 31 is cut off and interrupted; instead, a new path can be formed when the new second belt 61 is unwound from the new second belt reel 60.

[0057] 11) Introduce a new spare belt (see Figure 9The empty first reel 30 is removed, and the replaced second reel 60 is used as the new first reel 30, and the new second reel 60 can be introduced into the replacement position.

[0058] When the lower limit of the tape diameter during the replacement and attachment period is sensed again, processes 1) to 11) as described above can be repeated.

[0059] In the case of a changeover process, refer to Figure 10 The second shaft 21 rotates to the replacement position and then stands by. On the mounting bracket 71 with the replacement unit 70, multiple second pulleys 60 are vertically aligned and arranged sequentially from the outside, and the pusher 72 is in the rearward position.

[0060] Reference Figure 11 If the pusher 72 moves forward and pushes the second reel at the innermost side of the waiting mounting bracket 71, the outermost second reel 60 is fastened to the second shaft 21 as it is pushed out of the mounting bracket 71.

[0061] refer to Figure 12 The device according to the invention can be implemented as a 3-tower type with attachment device, and 4-tower or more types are possible.

[0062] [Explanation of reference numerals in the attached diagram]

[0063] 10: Rotating unit; 11: Rotating axis; 12: First turret; 13: Second turret; 14: First slit; 15: Second slit; 20: First shaft; 21: Second shaft; 30: First pulley; 31: First belt; 40: Belt sensing sensor; 50: Shaft guide; 60: Second pulley; 61: Second belt; 70: Belt replacement unit; 71: Mounting bracket; 72: Pusher; 80: First cutter; 81: Second cutter; 90: Clamping roller; 91: Guide roller

Claims

1. A device with an attachment, comprising: A rotating unit is provided with a rotating axis and multiple turrets, the multiple turrets including a first turret and a second turret, the first turret and the second turret being connected to the rotating axis; Multiple shafts, including a first shaft and a second shaft, wherein the first shaft and the second shaft are respectively installed at the ends of the first turret and the second turret; A first reel, which is mounted on the first shaft and has a first belt wound on it for use; The belt is equipped with a sensing sensor that senses the diameter of the first belt being wound. A shaft guide that guides the movement of the first shaft during the rotation of the rotating unit; A belt replacement unit is provided for mounting a second belt reel on an empty second shaft on which a new second belt is wound. as well as A cutter, which is mounted on the rotation axis to cut the first strip.

2. The attachment device according to claim 1, wherein... The plurality of turrets and the plurality of axes are each composed of n turrets (n is a 2 or larger integer) and n axes, and the n turrets and the n axes are each set at an angle of 360 / n.

3. The attachment device according to claim 1, wherein... The first turret and the second turret each include a first slit and a second slit, and the first shaft and the second shaft are movable through the first slit and the second slit.

4. The attachment device according to claim 3, wherein As the first shaft moves along the shaft guide, the first shaft moves along the first slit.

5. The attachment device according to claim 1, wherein... The shaft guide is configured to form a chord with the rotation radius of the rotating unit.

6. The attachment device according to claim 1, wherein... The belt replacement unit includes a mounting bracket and a pusher. The mounting bracket is equipped with a plurality of second belt reels, and the pusher pushes the second belt reels to mount them onto the second shaft.

7. The attachment device according to claim 1, wherein The cutter is integrally mounted on the rotation axis and consists of n cutters (n is an integer of 2 or greater) along the circumferential direction of the rotation axis, and the n cutters are arranged at an angle of 360 / n.

8. The attachment device according to claim 1, wherein The band sensing sensor is arranged to sense the lower limit of the diameter of the first band, and if the band sensing sensor senses the lower limit of the diameter of the first band, the rotation of the rotating unit begins, and then the first axis moves linearly along the axis guide.

9. The attachment device according to claim 8, wherein If the second shaft rotates to the position of the belt changing unit, the second belt reel is mounted on the second shaft, and then the rotating unit rotates further until the second belt contacts the first belt.

10. The attachment device according to claim 9, wherein If the second strip contacts the first strip, the first strip and the second strip are bonded together by an adhesive material applied to the starting portion of the second strip, while the unbonded portion of the first strip is automatically cut by the cutter.

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