US20260021995A1

US20260021995A1 - Winding device and winding method

Info

Publication number: US20260021995A1
Application number: US18/998,659
Authority: US
Inventors: Shigeki Ishiguro; Masanobu SAKAUE; Kayo Shimokawa; Yosuke MAKIHATA; Atsushi Takashima
Original assignee: Nitto Denko Corp
Current assignee: Nitto Denko Corp
Priority date: 2022-07-29
Filing date: 2023-07-27
Publication date: 2026-01-22
Also published as: CN119585190A; JPWO2024024910A1; WO2024024910A1

Abstract

A winding device for winding a thread-like adhesive material around an outer circumferential surface of a linear workpiece includes a bobbin holder holding a bobbin around which the thread-like adhesive material is wound, the bobbin being held rotatably; and a guide roller provided on a path of the thread-like adhesive material between the linear workpiece and the bobbin holder, the guide roller having a groove portion on an outer circumferential surface of the guide roller and allowing the thread-like adhesive material pulled out from the bobbin to be threaded into the groove portion, wherein the thread-like adhesive material is wound around the outer circumferential surface of the linear workpiece by integrally turning the bobbin holder and the guide roller around the linear workpiece.

Description

TECHNICAL FIELD

The present invention relates to a winding device and a winding method.

BACKGROUND ART

Patent Document 1 noted below discloses a technique for binding linear workpieces such as a plurality of cables by winding an adhesive tape around an outer circumferential surface of linear workpieces. In this technique, since the outermost surface of the linear workpiece does not have adhesiveness, a functional member cannot be further attached to the outer circumferential surface of the linear workpiece.
In contrast, Patent Document 2 noted below discloses a technique for attaching a double-sided tape to an outer circumferential surface of a linear workpiece. This technique enables further attaching a functional member to the outer circumferential surface of the linear workpiece, but a mechanism for peeling off a release sheet from the double-sided tape and then winding the double-sided tape is required. In addition, in this technique, it is structurally difficult to attach the double-sided tape to the outer circumferential surface of the linear workpiece having a small diameter or an irregular shape.
In addition, Patent Document 3 noted below discloses a thread-like pressure-sensitive adhesive body including a thread-like core material and a pressure-sensitive adhesive layer covering the surface of the core material. Further, Patent Document 4 noted below discloses a thread-like adhesive material applying device using a thread-like adhesive material.

CITATION LIST

Patent Literature

- [PTL 1] Japanese Unexamined Patent Application Publication No. S63-147784
- [PTL 2] Japanese Unexamined Patent Application Publication No. 2015-124055
- [PTL 3] Japanese Unexamined Patent Application Publication No. 2021-55252
- [PTL 4] Japanese Unexamined Patent Application Publication No. 2021-161406

SUMMARY OF INVENTION

By winding the thread-like adhesive material around the outer circumferential surface of the linear workpiece such as a cable or a handle, it is possible to attach a functional material such as a design member, a protective member, or an anti-slip or waterproofing member to the outer circumferential surface of the linear workpiece.
However, in the conventional techniques, it is difficult to easily and reliably wind the thread-like adhesive material around the outer circumferential surface of the linear workpiece.
In order to solve the above-described problems, an object of the present invention is to enable a thread-like adhesive material to be easily and reliably wound around an outer circumferential surface of a linear workpiece.

Solution to Problem

A winding device according to an aspect of the present invention is a winding device for winding a thread-like adhesive material around an outer circumferential surface of a linear workpiece. The winding device includes:
a bobbin holder holding a bobbin around which the thread-like adhesive material is wound, the bobbin being held rotatably; and
a guide roller provided on a path of the thread-like adhesive material between the linear workpiece and the bobbin holder, the guide roller having a groove portion on an outer circumferential surface of the guide roller and allowing the thread-like adhesive material pulled out from the bobbin to be threaded into the groove portion,
wherein the thread-like adhesive material is wound around the outer circumferential surface of the linear workpiece by integrally turning the bobbin holder and the guide roller around the linear workpiece.

Advantageous Effects of Invention

According to the present invention, the thread-like adhesive material can be easily and reliably wound around the outer circumferential surface of the linear workpiece.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is an external perspective view of a winding device according to an embodiment.

FIG. 2 is an external perspective view of the winding device according to the embodiment.

FIG. 3 is a side view of the winding device according to the embodiment.

FIG. 4 is a side view of the winding device (in a state where the thread-like adhesive material is threaded) according to the embodiment.

FIG. 5 is a view schematically illustrating a winding operation by the winding device according to the embodiment.

FIG. 6 is a view schematically illustrating a modification of the winding operation by the winding device according to the embodiment.

FIG. 7 is a view illustrating an example (first example) of a guide roller provided in the winding device according to the embodiment.

FIG. 8 is a view illustrating an example (second example) of a guide roller provided in the winding device according to the embodiment.

FIG. 9 is a view illustrating an example (third example) of the guide roller provided in the winding device according to the embodiment.

FIG. 10 is a view illustrating an example (fourth example) of the guide roller provided in the winding device according to the embodiment.

FIG. 11 is a view illustrating an example (first example) of a drawing operation of the thread-like adhesive material in the winding device according to the embodiment.

FIG. 12A is a view illustrating an example (second example) of the drawing operation of the thread-like adhesive material in the winding device according to the embodiment.

FIG. 12B is a view illustrating an example (second example) of the drawing operation of the thread-like adhesive material in a winding device according to the embodiment.

FIG. 13 is a view illustrating an example (first example) of the winding operation of the thread-like adhesive material in the winding device according to the embodiment.

FIG. 14 is a view illustrating an example (second example) of the winding operation of the thread-like adhesive material in the winding device according to the embodiment.

FIG. 15A is a view illustrating an example of a brake mechanism included in the winding device according to the embodiment.

FIG. 15B is a view illustrating an example of the brake mechanism included in the winding device according to the embodiment.

FIG. 16 is a view illustrating a modification of the threading method of the thread-like adhesive material in the winding device according to the embodiment.

FIG. 17 is a view illustrating a modification of the threading method of the thread-like adhesive material in the winding device according to the embodiment.

DESCRIPTION OF EMBODIMENT

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
In the drawings illustrated below, for convenience, the Z-axis direction is the up-down direction, the X-axis direction is the front-rear direction, and the Y-axis direction is the left-right direction. Note that the positive Z-axis direction is an upward direction, the positive X-axis direction is a forward direction, and the positive Y-axis direction is a rightward direction. These directions do not limit the orientation of the winding device 100 during use, and the orientation of the winding device 100 during use may be any given orientation.

Configuration of Winding Device 100

FIGS. 1 and 2 are external perspective views of a winding device 100 according to an embodiment. FIG. 3 is a side view of the winding device 100 according to the embodiment. FIG. 4 is a side view of the winding device 100 (in a state where a thread-like adhesive material 30 is threaded) according to the embodiment.
The winding device 100 illustrated in FIGS. 1 to 4 is a winding device 100 for winding a thread-like adhesive material 30 around an outer circumferential surface 10A of a linear workpiece 10.
Herein, the linear workpiece 10 means any member in general having the outer circumferential surface 10A around which the thread-like adhesive material 30 can be wound. The linear workpiece 10 includes, for example, electric wires such as electric wires, cables, and wire harnesses, handles of motorcycles, bicycles, and the like, and members having a columnar shape, a cylindrical shape, and a shape similar to these shapes, such as handles of golf clubs, fishing rods, tennis rackets, and the like. The linear workpiece 10 may be made of a hard material so as not to be elastically deformed, may be made of a material having rubber elasticity so as to be elastically deformable, or may be made of a soft material so as to be plastically deformed. The linear workpiece 10 may have any shape and configuration as long as the thread-like adhesive material 30 can be wound around its outer circumferential surface 10A, and can be expressed as a “winding target”, a “wound body”, or the like.
The thread-like adhesive material 30 includes a linear (thread-like) core material and an adhesive layer covering the surface of the core material. As the core material, for example, a resin, a rubber, a foam, an inorganic fiber, a composite material of these materials, or the like can be used. The pressure-sensitive adhesive layer is formed using a pressure-sensitive adhesive. Examples of the pressure-sensitive adhesive include an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a vinyl alkyl ether-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, a polyester-based pressure-sensitive adhesive, a polyamide-based pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, a fluorine-based pressure-sensitive adhesive, and an epoxy-based pressure-sensitive adhesive.
As illustrated in FIGS. 1 to 4 , the winding device 100 includes a bobbin holder 110, a first guide roller 120-1, a second guide roller 120-2, and a cover 140.
The bobbin holder 110 holds the bobbin 20 around which the thread-like adhesive material 30 is wound, the bobbin 20 being held rotatably. The bobbin holder 110 includes a round rod-shaped shaft portion 111 having an axial direction in the left-right direction (Y-axis direction). The bobbin 20 is a cylindrical member having an outer circumferential surface 20A around which the thread-like adhesive material 30 is wound. The bobbin holder 110 holds the bobbin 20 rotatably around the axis of the shaft portion 111 by inserting the shaft portion 111 into the cylinder of the bobbin 20.
The first guide roller 120-1 and the second guide roller 120-2 are provided in series on a path of the thread-like adhesive material 30 between the linear workpiece 10 and the bobbin holder 110. The first guide roller 120-1 is provided on the front side (the positive side of the X-axis) and the lower side (the negative side of the Y-axis) of the bobbin holder 110. The second guide roller 120-2 is provided between the bobbin holder 110 and the linear workpiece 10. That is, the second guide roller 120-2 is provided on the rear side (the negative side of the X-axis) and the lower side (the negative side of the Y-axis) of the first guide roller 120-1, and on the front side (the positive side of the X-axis) of the linear workpiece 10.
The first guide roller 120-1 and the second guide roller 120-2 each have a wheel shape and have a shaft portion 121 at the center. The first guide roller 120-1 and the second guide roller 120-2 are provided rotatably around the axis of the corresponding shaft portion 121. The first guide roller 120-1 and the second guide roller 120-2 are arranged such that the axial direction of the corresponding shaft portion 121 is the left-right direction (Y-axis direction). The first guide roller 120-1 and the second guide roller 120-2 each have a groove portion 122 on outer an circumferential surface of a corresponding one of the first guide roller 120-1 and the second guide roller 120-2. The first guide roller 120-1 and the second guide roller 120-2 guide the thread-like adhesive material 30 by having the thread-like adhesive material 30 pulled out from the bobbin holder 110 threaded into the groove portion 122.
The first guide roller 120-1 applies tension to the thread-like adhesive material 30 by threading the thread-like adhesive material 30 into the groove portion 122 on the outer side (the positive side of the X-axis), and guides the direction in which the thread-like adhesive material 30 extends toward the direction in which the second guide roller 120-2 is present. The second guide roller 120-2 applies tension to the thread-like adhesive material 30 by threading the thread-like adhesive material 30 into the groove portion 122 on the outer side (the negative side of the Z-axis), and guides the direction in which the thread-like adhesive material 30 toward extends the direction in which the cover 140 is present. The first guide roller 120-1 and the second guide roller 120-2 are arranged such that, in the left-right direction (Y-axis direction), the middle position between the first guide roller 120-1 and the second guide roller 120-2 is aligned with the middle position of the bobbin holder 110.
In the winding device 100 according to the embodiment, the two guide rollers 120-1 and 120-2 are provided on the path of the thread-like adhesive material 30, but the present invention is not limited to this example, and one, or three or more guide rollers may be provided.
The cover 140 is provided on the lower side (the negative side of the Z-axis) of the bobbin holder 110. The cover 140 is a plate-like member having a constant width in the left-right direction (Y-axis direction). The cover 140 has a shape bent so as to form a U shape whose rear side (the negative side of the X-axis) is opened when viewed from the side (Y-axis direction). The cover 140 covers the outer side (the upper side (the positive side of the Z-axis), the lower side (the negative side of the Z-axis), and the front side (the positive side of the X-axis)) of the outer circumferential surface 10A of the linear workpiece 10 by disposing the linear workpiece 10 in a space 140A surrounded by the cover 140. The cover 140 has a slit 141 that is cut out linearly in the left-right direction (Y-axis direction) at a front end portion (end portion on the positive side of the X-axis) and at the middle position in the up-down direction (Z-axis direction). The cover 140 is configured such that the thread-like adhesive material 30 can be pulled into the inside of the cover 140 from the outside of the cover 140 by inserting the thread-like adhesive material 30 into the slit 141, and the height position at which the thread-like adhesive material 30 is pulled into the inside of the cover 140 can be maintained at a constant height position.

Procedure of Winding Method Using Winding Device 100

The winding device 100 configured as described above, as illustrated in FIG. 4 , installs the bobbin 20 with the thread-like adhesive material 30 wound therearound on the bobbin holder 110 (bobbin installation step), threads the thread-like adhesive material 30 pulled out forward (X-axis positive direction) and downward (Z-axis negative direction) from the bobbin 20 into the groove portion 122 of the first guide roller 120-1 and the groove portion 122 of the second guide roller 120-2 (threading step), and further pulls the thread-like adhesive material 30 into the space 140A surrounded by the cover 140 from the slit 141 of the cover 140 (pulling step) to attach the tip of the thread-like adhesive material 30 onto the outer circumferential surface 10A of the linear workpiece 10 (attaching step). Thus, the winding device 100 can perform the winding of the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 (the winding step illustrated in FIGS. 5 and 6 ).

Operation of Winding Device 100

FIG. 5 is a view schematically illustrating a winding operation by the winding device 100 according to the embodiment. As illustrated in FIG. 5 , the winding device 100 according to the embodiment can wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 by integrally turning the bobbin holder 110, the bobbin 20, the first guide roller 120-1, and the second guide roller 120-2 around the linear workpiece 10.
In the winding device 100, the components (the bobbin holder 110, the first guide roller 120-1, the second guide roller 120-2, and the cover 140) are unitized so that the relative positional relationship between the components does not change. Therefore, the winding device 100 can wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 by turning the entire unit around the linear workpiece 10 and turning the respective components around the axis of the linear workpiece 10 without changing the relative positional relationship of the respective components.
The winding device 100 includes a turning mechanism (not illustrated) including a motor, a gear, a drive belt, and the like, so that the turning mechanism can turn the unit through electric power.
For example, the operator turns on the switch of the turning mechanism to turn the unit, and can start winding the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10. Then, the operator turns off the switch of the turning mechanism to stop the turning of the unit, and can end the winding of the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10.
Here, in the winding device 100, since the bobbin 20 is rotatably held by the shaft portion 111 of the bobbin holder 110, the thread-like adhesive material 30 is pulled by the linear workpiece 10 in accordance with the rotating of the unit, and thus the thread-like adhesive material 30 can be pulled out from the bobbin 20 while the bobbin 20 rotates around the shaft portion 111 of the bobbin holder 110.
Further, the winding device 100 can guide the thread-like adhesive material 30 so that the thread-like adhesive material 30 is reliably fed to the linear workpiece 10 while appropriately applying tension to the thread-like adhesive material 30 by threading the thread-like adhesive material 30 on the first guide roller 120-1 and the second guide roller 120-2.
In particular, the winding device 100 can prevent the thread-like adhesive material 30 from falling off from the first guide roller 120-1 and the second guide roller 120-2 by threading the thread-like adhesive material 30 into the groove portion 122 of the first guide roller 120-1 and the groove portion 122 of the second guide roller 120-2, which enables the winding device 100 to guide the thread-like adhesive material 30 so that the thread-like adhesive material 30 is more reliably fed to the linear workpiece 10.
Furthermore, the winding device 100 can smoothly feed the thread-like adhesive material 30 to the linear workpiece 10 by the first guide roller 120-1 and the second guide roller 120-2 rotating around the axes of the respective shaft portions 121 in accordance with the movement of the thread-like adhesive material 30.
Note that the winding device 100 may include a feeding mechanism including a motor, a gear, a drive belt, and the like, and may be capable of feeding the linear workpiece 10 through electric power in the axial direction (Y-axis direction) of the linear workpiece 10 by the feeding mechanism. Alternatively, the linear workpiece 10 may be manually fed in the axial direction (Y-axis direction) of the linear workpiece 10 by an operator.
Thus, the winding device 100 can wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 at a constant interval by winding the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 while feeding the linear workpiece 10 in the axial direction of the linear workpiece 10 at a constant speed.

Modification of Operation of Winding Device 100

FIG. 6 is a view schematically illustrating a modification of the winding operation by the winding device 100 according to the embodiment. As illustrated in FIG. 6 , a winding device 100-2 according to the modification can wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 by rotating the linear workpiece 10 around the axis of the linear workpiece 10.
In this case, the winding device 100-2 may include a rotation mechanism (not illustrated) including, for example, a motor, a gear, a drive belt, and the like, and may be configured to be capable of rotating the linear workpiece 10 around the axis of the linear workpiece 10 by the rotation mechanism through electric power.
For example, the operator can start winding the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 by turning on the switch of the rotation mechanism to rotate the linear workpiece 10. Then, the operator turns off the switch of the rotation mechanism to stop the rotation of the linear workpiece 10, and can end the winding of the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10.
Here, in the winding device 100-2, since the bobbin 20 is rotatably held by the shaft portion 111 of the bobbin holder 110, the thread-like adhesive material 30 is pulled by the linear workpiece 10 in accordance with the rotation of the linear workpiece 10, and thus the thread-like adhesive material 30 can be pulled out from the bobbin 20 while the bobbin 20 rotates around the shaft portion 111 of the bobbin holder 110.
Further, the winding device 100-2 can guide the thread-like adhesive material 30 so that the thread-like adhesive material 30 is reliably fed to the linear workpiece 10 while appropriately applying tension to the thread-like adhesive material 30 by threading the thread-like adhesive material 30 on the first guide roller 120-1 and the second guide roller 120-2.
In particular, the winding device 100-2 can prevent the thread-like adhesive material 30 from falling off from the first guide roller 120-1 and the second guide roller 120-2 by threading the thread-like adhesive material 30 into the groove portion 122 of the first guide roller 120-1 and the groove portion 122 of the second guide roller 120-2, and the winding device 100-2 can thus guide the thread-like adhesive material 30 so that the thread-like adhesive material 30 is more reliably fed to the linear workpiece 10.
Further, the winding device 100-2 can smoothly feed the thread-like adhesive material 30 to the linear workpiece 10 by the first guide roller 120-1 and the second guide roller 120-2 rotating around the shaft portions 121 in accordance with the movement of the thread-like adhesive material 30.
The winding device 100-2 may include a feeding mechanism including a motor, a gear, a drive belt, and the like, and may be capable of feeding the linear workpiece 10 through electric power in the axial direction (Y-axis direction) of the linear workpiece 10 by the feeding mechanism. Alternatively, the linear workpiece 10 may be manually fed in the axial direction (Y-axis direction) of the linear workpiece 10 by an operator. Thus, the winding device 100-2 can wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 at a constant interval by winding the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 while feeding the linear workpiece 10 in the axial direction of the linear workpiece 10 at a constant speed.

Example of Guide Roller 120

FIGS. 7 to 10 are views illustrating examples (first to fourth examples) of guide rollers 120 included in the winding device 100 according to the embodiment. For example, the winding device 100 according to the embodiment can use any of the guide rollers 120A to 120D illustrated in FIGS. 7 to 10 as the first guide roller 120-1 and the second guide roller 120-2.
The guide rollers 120A to 120D illustrated in FIGS. 7 to 10 are all wheel-shaped with constant thicknesses, and are the same in that the guide rollers 120A to 120D each have a groove portion 122 on the outer circumferential surface and flange portions 123 having the largest diameters on both outer sides of the groove portion 122, but the shapes of the groove portions 122, are different from each other.
For example, a guide roller 120A illustrated in FIG. 7 , the groove portion 122 has a V-shaped cross section with an included angle of 60°.
According to the guide roller 120A illustrated in FIG. 7 , when the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 is within the range of 60°, the thread-like adhesive material 30 can be easily guided to the valley bottom portion (i.e., the center position in the thickness direction) of the groove portion 122 without being caught by the flange portions 123 even if the inclination angle of the guide roller 120A is fixed. Therefore, the guide roller 120A illustrated in FIG. 7 is effective when the winding width W1 (see FIGS. 11 and 12 ) of the thread-like adhesive material 30 with respect to the bobbin 20 is relatively small.
For example, in a guide roller 120B illustrated in FIG. 8 , the groove portion 122 has a V-shaped cross section with an included angle of 90°.
According to the guide roller 120B illustrated in FIG. 8 , when the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 is within the range of 90°, the thread-like adhesive material 30 can be easily guided to the valley bottom portion (i.e., the center position in the thickness direction) of the groove portion 122 without being caught by the flange portions 123 even if the inclination angle of the guide roller 120B is fixed. Therefore, the guide roller 120B illustrated in FIG. 8 is effective when the winding width W1 of the thread-like adhesive material 30 with respect to the bobbin 20 is relatively large.
For example, in a guide roller 120C illustrated in FIG. 9 , the groove portion 122 has a U-shaped cross section with a curved bottom surface.
According to the guide roller 120C illustrated in FIG. 9 , when the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 is within a relatively small angle range (i.e., when the winding width W1 of the thread-like adhesive material 30 with respect to the bobbin 20 is relatively small), the thread-like adhesive material 30 can be guided to the curved bottom portion of the groove portion 122 (i.e., the center position in the thickness direction) without being caught by the flange portions 123 even if the inclination angle of the guide roller 120C is fixed.
For example, in the guide roller 120D illustrated in FIG. 10 , the groove portion 122 has a recessed cross section with a flat bottom surface.
According to the guide roller 120D illustrated in FIG. 10 , when the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 is within a relatively small angle range (i.e., when the winding width W1 of the thread-like adhesive material 30 with respect to the bobbin 20 is relatively small), the thread-like adhesive material 30 can be guided to the flat bottom portion of the groove portion 122 (i.e., the center position in the thickness direction) without being caught by the flange portions 123 even if the inclination angle of the guide roller 120D is fixed.
However, as described later with reference to FIGS. 12A and 12B, the guide rollers 120A to 120D illustrated in FIGS. 7 to 10 are configured such that the inclination angles of the guide rollers 120A to 120D are variable, whereby even when the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 is larger (i.e., when the winding width W1 of the thread-like adhesive material 30 with respect to the bobbin 20 is larger), the thread-like adhesive material 30 can be more reliably guided to the bottom portion of the groove portion 122 without being caught by the flange portions 123.
Note that the guide rollers 120A to 120D illustrated in FIGS. 7 to 10 each have the groove portion 122, and therefore the thread-like adhesive material 30 threaded into the groove portion 122 is less likely to fall off from the groove portion 122.
In addition, in all of the guide rollers 120A to 120D illustrated in FIGS. 7 to 10 , the surfaces of the groove portions 122 are subjected to the non-adhesion treatment, and the thread-like adhesive material 30 is less likely to adhere to the surfaces of the groove portions 122, and thus the thread-like adhesive material 30 threaded into the groove portions 122 can be fed out with a low load.
The surface of the groove portion 122 is made of at least one of, for example, a fluororesin, a silicone resin, and a polyolefin resin. Alternatively, the surface of the groove portion 122 is subjected to non-adhesion treatment by at least one of fluorine coating, silicone coating, long-chain alkyl coating, and Tosical (registered trademark) S-coating, for example. The treatment with fluorine coating includes treatment with a fluororesin heat-shrinkable tube or a fluororesin fabric sheet. Alternatively, the surface of the groove portion 122 may be subjected to various non-adhesion treatments. For example, the base material may be roughened by blasting and the recessed portions of the roughened base material may be coated with a non-adhesive substance, or may be treated with PEEK (polyether ether ketone) coating, fluorine composite electroless nickel plating (fluorine resin fine particles are dispersed and co-deposited in the film of electroless nickel plating), Biserum (fluorine resin coating micronized containing ceramic particles), FRP (fiber reinforced plastics) lining, ultra-high molecular PE (polyester) lining, or the like.
The guide rollers 120A to 120D illustrated in FIGS. 7 to 10 may have “folded portions” formed by bending outer circumferential edges of the flange portions 123 inward (toward the groove portion 122) at a right angle or an acute angle. Thus, the guide rollers 120A to 120D illustrated in FIGS. 7 to 10 can make the thread-like adhesive material 30 less likely to fall off from the groove portion 122.

Example of Drawing Operation of Thread-Like Adhesive Material 30 (First Example)

FIG. 11 is a view illustrating an example (first example) of a drawing operation of the thread-like adhesive material 30 in the winding device 100 according to the embodiment. FIG. 11 illustrates an example of the drawing operation of the thread-like adhesive material 30 in the case where the inclination angle of the first guide roller 120-1 is fixed. In FIG. 11 , the guide roller 120A illustrated in FIG. 7 is used as the first guide roller 120-1.
As illustrated in FIG. 11 , in the winding device 100 according to the embodiment, the first guide roller 120-1 and the bobbin 20 are arranged such that the center position of the first guide roller 120-1 in the left-right direction (Y-axis direction) and the center position of the bobbin 20 in the left-right direction (Y-axis direction) are aligned with each other.
As illustrated in FIG. 11 , in the winding device 100 according to the embodiment, the first guide roller 120-1 has the groove portion 122, and thus the thread-like adhesive material 30 threaded into the groove portion 122 of the first guide roller 120-1 is less likely to fall off from the groove portion 122 of the first guide roller 120-1.
In the winding device 100 according to the embodiment, the surface of the groove portion 122 of the first guide roller 120-1 is subjected to the non-adhesion treatment, and the thread-like adhesive material 30 is less likely to adhere to the surface of the groove portion 122 of the first guide roller 120-1. Therefore, the first guide roller 120-1 can feed the thread-like adhesive material 30 with a low load.
In the example illustrated in FIG. 11 , the inclination angle of the first guide roller 120-1 is fixed to 0° (i.e., an angle perpendicular to the outer circumferential surface 20A of the bobbin 20).
As illustrated in FIG. 11 , the thread-like adhesive material 30 is wound around the outer circumferential surface 20A of the bobbin 20 with a winding width W1 in the left-right direction (Y-axis direction). Therefore, as illustrated in FIG. 11 , the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 of the first guide roller 120-1 changes within the angle range determined by the winding width W1.
In the example illustrated in FIG. 11 , the groove portion 122 of the first guide roller 120-1 has a V-shaped cross section with an included angle of 60°. In addition, in the example illustrated in FIG. 11 , the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 is within the range of 60° formed by the groove portion 122.
Therefore, in the example illustrated in FIG. 11 , even when the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 of the first guide roller 120-1 changes, the thread-like adhesive material 30 can be more reliably guided to the bottom portion of the groove portion 122 without being caught by the flange portions 123 of the first guide roller 120-1.

Example of Drawing Operation of Thread-Like Adhesive Material 30 (Second Example)

FIGS. 12A and 12B are views illustrating an example (second example) of a drawing operation of the thread-like adhesive material 30 in the winding device 100 according to the embodiment. FIG. 12A and FIG. 12B illustrate an example of the drawing operation of the thread-like adhesive material 30 in the case where the inclination angle of the first guide roller 120-1 is made variable. Note that in FIGS. 12A and 12B, the guide roller 120A illustrated in FIG. 7 is used as the first guide roller 120-1.
As illustrated in FIGS. 12A and 12B, in the winding device 100 according to the embodiment, the first guide roller 120-1 and the bobbin 20 are arranged such that the center position of the first guide roller 120-1 in the left-right direction (Y-axis direction) and the center position of the bobbin 20 in the left-right direction (Y-axis direction) are aligned with each other.
As illustrated in FIGS. 12A and 12B, in the winding device 100 according to the embodiment, the first guide roller 120-1 has the groove portion 122, and thus the thread-like adhesive material 30 threaded into the groove portion 122 of the first guide roller 120-1 is less likely to fall off from the groove portion 122 of the first guide roller 120-1.
In the winding device 100 according to the embodiment, the surface of the groove portion 122 of the first guide roller 120-1 is subjected to the non-adhesion treatment, and the thread-like adhesive material 30 is less likely to adhere to the surface of the groove portion 122 of the first guide roller 120-1. Therefore, the first guide roller 120-1 can feed the thread-like adhesive material 30 with a low load.
Here, in the example illustrated in FIG. 12A and FIG. 12B, the first guide roller 120-1 is configured such that the inclination angle of the first guide roller 120-1 with respect to the outer circumferential surface 20A of the bobbin 20 can be changed according to the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 of the first guide roller 120-1.
As illustrated in FIG. 12A and FIG. 12B, the thread-like adhesive material 30 is wound around the outer circumferential surface 20A of the bobbin 20 with a winding width W1 in the left-right direction (Y-axis direction). Therefore, as illustrated in FIG. 12A and FIG. 12B, the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 of the first guide roller 120-1 changes within the angle range determined by the winding width W1. Note that FIG. 12A illustrates the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 when the thread-like adhesive material 30 is drawn from the right end portion (the end portion on the positive side of the Y-axis) of the winding width W1. Further, FIG. 12B illustrates the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 when the thread-like adhesive material 30 is drawn from the left end portion (end portion on the negative side of the Y-axis) of the winding width W1.
However, in the example illustrated in FIGS. 12A and 12B, the inclination angle of the first guide roller 120-1 with respect to the outer circumferential surface 20A of the bobbin 20 changes to be substantially equal to the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 of the first guide roller 120-1 by receiving an applied force from the thread-like adhesive material 30 entering the first guide roller 120-1 (i.e., following the entry angle of the thread-like adhesive material 30).
Therefore, in the example illustrated in FIGS. 12A and 12B, even when the entry angle of the thread-like adhesive material 30 with respect to the groove portion 122 of the first guide roller 120-1 changes, the thread-like adhesive material 30 can be more reliably guided to the bottom portion of the groove portion 122 without being caught by the flange portions 123 of the first guide roller 120-1.
The first guide roller 120-1 may be configured to be switchable between a state in which the inclination angle is fixed and a state in which the inclination angle is variable.

Example of Winding Operation of Thread-Like Adhesive Material 30 (First Example)

FIG. 13 is a view illustrating an example (first example) of the winding operation of the thread-like adhesive material 30 in the winding device 100 according to the embodiment. FIG. 13 illustrates an example of the winding operation of the thread-like adhesive material 30 in the case where the inclination angle of the second guide roller 120-2 is fixed. In FIG. 13 , the guide roller 120A illustrated in FIG. 7 is used as the second guide roller 120-2.
As illustrated in FIG. 13 , in the winding device 100 according to the embodiment, the second guide roller 120-2 and the linear workpiece 10 are arranged such that the center position of the second guide roller 120-2 in the left-right direction (Y-axis direction) and the center position of the linear workpiece 10 in the left-right direction (Y-axis direction) are aligned with each other.
Thus, the winding device 100 according to the embodiment can reliably guide the thread-like adhesive material 30 to the center position of the linear workpiece 10 in the left-right direction (Y-axis direction) by the second guide roller 120-2.
As illustrated in FIG. 13 , in the winding device 100 according to the embodiment, the second guide roller 120-2 has the groove portion 122, and thus the thread-like adhesive material 30 threaded into the groove portion 122 of the second guide roller 120-2 is less likely to fall off from the groove portion 122 of the second guide roller 120-2.
In the winding device 100 according to the embodiment, the surface of the groove portion 122 of the second guide roller 120-2 is subjected to the non-adhesion treatment, and the thread-like adhesive material 30 is less likely to adhere to the surface of the groove portion 122 of the second guide roller 120-2. Therefore, the second guide roller 120-2 can feed the thread-like adhesive material 30 with a low load.
As illustrated in FIG. 13 , the winding device 100 according to one embodiment can wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 at a constant interval by winding the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 while feeding the linear workpiece 10 in the right direction (Y-axis positive direction).
In the example illustrated in FIG. 13 , the inclination angle of the second guide roller 120-2 is fixed to 0° (i.e., an angle perpendicular to the outer circumferential surface 10A of the linear workpiece 10).
As illustrated in FIG. 13 , the winding position of the thread-like adhesive material 30 on the outer circumferential surface 10A of the linear workpiece 10 may be changed from the center position of the linear workpiece 10 in the left-right direction (Y-axis direction).
However, in the example illustrated in FIG. 13 , the groove portion 122 of the second guide roller 120-2 has a V-shaped cross section with an included angle of 60°. In addition, in the example illustrated in FIG. 13 , the feeding angle of the thread-like adhesive material 30 from the groove portion 122 is within the range of 60° formed by the groove portion 122.
Therefore, in the example illustrated in FIG. 13 , even when the feeding angle of the thread-like adhesive material 30 from the groove portion 122 of the second guide roller 120-2 changes, the thread-like adhesive material 30 can be more reliably guided to the outer circumferential surface 10A of the linear workpiece 10 without being caught by the flange portions 123 of the second guide roller 120-2.

Example of Winding Operation of Thread-Like Adhesive Material 30 (Second Example)

FIG. 14 is a view illustrating an example (second example) of the winding operation of the thread-like adhesive material 30 in the winding device 100 according to the embodiment. FIG. 14 illustrates an example of the winding operation of the thread-like adhesive material 30 in the case where the inclination angle of the second guide roller 120-2 is variable. In FIG. 14 , the guide roller 120A illustrated in FIG. 7 is used as the second guide roller 120-2.
As illustrated in FIG. 14 , in the winding device 100 according to the embodiment, the second guide roller 120-2 and the linear workpiece 10 are arranged such that the center position of the second guide roller 120-2 in the left-right direction (Y-axis direction) and the center position of the linear workpiece 10 in the left-right direction (Y-axis direction) are aligned with each other.
Thus, the winding device 100 according to the embodiment can reliably guide the thread-like adhesive material 30 to the center position of the linear workpiece 10 in the left-right direction (Y-axis direction) by the second guide roller 120-2.
Further, as illustrated in FIG. 14 , in the winding device 100 according to the embodiment, since the second guide roller 120-2 has the groove portion 122, the thread-like adhesive material 30 threaded into the groove portion 122 of the second guide roller 120-2 is less likely to fall off from the groove portion 122 of the second guide roller 120-2.
In the winding device 100 according to the embodiment, the surface of the groove portion 122 of the second guide roller 120-2 is subjected to the non-adhesion treatment, and the thread-like adhesive material 30 is less likely to adhere to the surface of the groove portion 122 of the second guide roller 120-2. Therefore, the second guide roller 120-2 can feed the thread-like adhesive material 30 with a low load.
As illustrated in FIG. 14 , the winding device 100 according to one embodiment can wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 at a constant interval by winding the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 while feeding the linear workpiece 10 in the right direction (Y-axis positive direction).
In the example illustrated in FIG. 14 , the second guide roller 120-2 is configured such that the inclination angle of the second guide roller 120-2 with respect to the outer circumferential surface 10A of the linear workpiece 10 can be changed in accordance with the feeding angle of the thread-like adhesive material 30 from the groove portion 122 of the second guide roller 120-2.
As illustrated in FIG. 14 , the winding position of the thread-like adhesive material 30 on the outer circumferential surface 10A of the linear workpiece 10 may be changed from the center position of the linear workpiece 10 in the left-right direction (Y-axis direction).
However, in the example illustrated in FIG. 14 , the inclination angle of the second guide roller 120-2 with respect to the outer circumferential surface 10A of the linear workpiece 10 changes to be substantially equal to the feeding angle of the thread-like adhesive material 30 from the groove portion 122 of the second guide roller 120-2 by receiving the an applied force from the thread-like adhesive material 30 fed from the second guide roller 120-2 (i.e., following the feeding angle of the thread-like adhesive material 30).
Therefore, in the example illustrated in FIG. 14 , even when the feeding angle of the thread-like adhesive material 30 from the groove portion 122 of the second guide roller 120-2 changes, the thread-like adhesive material 30 can be more reliably guided to the outer circumferential surface 10A of the linear workpiece 10 without being caught by the flange portions 123 of the second guide roller 120-2.
The second guide roller 120-2 may be configured to be switchable between a state in which the inclination angle is fixed and a state in which the inclination angle is variable.

Brake Mechanism 150

FIG. 15A and FIG. 15B are views illustrating an example of the brake mechanism 150 included in the winding device 100 according to the embodiment. As illustrated in FIG. 15A and FIG. 15B, the winding device 100 according to the embodiment may include a brake mechanism 150 that brakes the rotation of the bobbin 20.
In the example illustrated in FIG. 15A and FIG. 15B, the brake mechanism 150 is provided at the right end portion (the end portion on the positive side of the Y-axis) of the bobbin 20.
For example, the brake mechanism 150 may be a mechanical brake (e.g., a slipping and clutch brake) that brakes the rotation of the bobbin 20 by applying a frictional force to the bobbin 20 or the bobbin holder 110.
Further, for example, the brake mechanism 150 may be an electromagnetic brake (e.g., a powder brake or the like) that brakes the rotation of the bobbin 20 by applying an electromagnetic force to the bobbin 20 or the bobbin holder 110.
The winding device 100 according to the embodiment includes the brake mechanism 150, and thus can control the tension of the thread-like adhesive material 30 drawn from the bobbin 20 to be a constant tension by controlling the braking force applied to the rotation of the bobbin 20 by the brake mechanism 150 (i.e., controlling the rotational load of the bobbin 20).
In particular, in the winding device 100 according to the embodiment, the tension of the thread-like adhesive material 30 drawn from the bobbin 20 is not maintained as constant easily due to the adhesion action between the thread-like adhesive material 30 wound around the bobbin 20, and thus the configuration in which the brake mechanism 150 is provided to control the tension of the thread-like adhesive material 30 drawn from the bobbin 20 to be a constant tension is useful. Thus, the winding device 100 according to the embodiment can wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 at any given force.

Effects

As described above, the winding device 100 according to one embodiment is a winding device 100 for winding the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10, and includes the bobbin holder 110 rotatably holding the bobbin 20 around which the thread-like adhesive material 30 is wound, and the guide roller 120 provided on the path of the thread-like adhesive material 30 between the linear workpiece 10 and the bobbin holder 110, the guide roller 120 having the groove portion 122 on the outer circumferential surface of the guide roller 120 and allowing the thread-like adhesive material 30 pulled out from the bobbin 20 to be threaded into the groove portion 122, wherein the bobbin holder 110 and the guide roller 120 integrally turn around the linear workpiece 10 to wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10.
This enables the winding device 100 according to the embodiment to easily and reliably wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 only by turning the bobbin holder 110 and the guide roller 120 around the linear workpiece 10.
In addition, the winding device 100 according to the embodiment can more reliably guide the thread-like adhesive material 30 pulled out from the bobbin 20 to the outer circumferential surface 10A of the linear workpiece 10 by the guide roller 120.
In the winding device 100 according to the embodiment, the guide roller 120 has the groove portion 122, and thus the thread-like adhesive material 30 pulled out from the bobbin 20 can be more reliably guided to the outer circumferential surface 10A of the linear workpiece 10 without allowing the guide roller 120 to fall off the thread-like adhesive material 30 from the groove portion 122.
The winding device 100-2 according to the embodiment is a winding device 100-2 for winding the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10, and includes the bobbin holder 110 rotatably holding the bobbin 20 around which the thread-like adhesive material 30 is wound, and the guide roller 120 provided on a path of the thread-like adhesive material 30 between the linear workpiece 10 and the bobbin holder 110, the guide roller 120 having the groove portion 122 on the outer circumferential surface of the guide roller 120, and allowing the thread-like adhesive material 30 pulled out from the bobbin 20 to be threaded into the groove portion 122, wherein the linear workpiece 10 rotates around the axis of the linear workpiece 10 to cause the thread-like adhesive material 30 to be wound around the outer circumferential surface 10A of the linear workpiece 10.
Thus, the winding device 100-2 according to the embodiment can easily and reliably wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 only by rotating the linear workpiece 10 around the axis of the linear workpiece 10.
In addition, the winding device 100-2 according to the embodiment can more reliably guide the thread-like adhesive material 30 pulled out from the bobbin 20 to the outer circumferential surface 10A of the linear workpiece 10 by the guide roller 120.
In the winding device 100-2 according to the embodiment, the guide roller 120 has the groove portion 122, and thus the thread-like adhesive material 30 pulled out from the bobbin 20 can be more reliably guided to the outer circumferential surface 10A of the linear workpiece 10 without allowing the guide roller 120 to fall off the thread-like adhesive material 30 from the groove portion 122.
In the winding device 100 or 100-2 according to the embodiment, the inclination of the guide roller 120 with respect to the bobbin 20 may be variable in accordance with the entry angle at which the thread-like adhesive material 30 pulled out from the bobbin 20 enters the groove portion 122.
Accordingly, the winding device 100 or 100-2 according to the embodiment can more reliably thread the thread-like adhesive material 30 pulled out from the bobbin 20 into the groove portion 122 of the guide roller 120, and can prevent the thread-like adhesive material 30 from falling off from the groove portion 122.
In the winding device 100 or 100-2 according to the embodiment, the guide roller 120 may have a non-adhesive treatment applied to the surface of the groove portion 122.
This enables the winding device 100 or 100-2 according to the embodiment to guide the thread-like adhesive material 30 pulled out from the bobbin 20 by the guide roller 120 without adhering the thread-like adhesive material 30 to the surface of the groove portion 122 of the guide roller 120 (i.e., without applying a load to the feeding of the thread-like adhesive material 30).
Further, the winding device 100 or 100-2 according to the embodiment may include a brake mechanism 150 that brakes the rotation of the bobbin 20.
This enables the winding device 100 or 100-2 according to the embodiment to control the tension of the thread-like adhesive material 30 drawn from the bobbin 20 by the brake mechanism 150 to be a constant tension. Therefore, the winding device 100 or 100-2 according to the embodiment can easily and reliably wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 at any given force.
In the winding device 100 or 100-2 according to the embodiment, the bobbin holder 110 may rotatably hold the bobbin 20 around which the thread-like adhesive material 30 is wound without interposing a release sheet.
This enables the winding device 100 or 100-2 according to the embodiment to easily and reliably wind the thread-like adhesive material 30 around the outer circumferential surface 10A of the linear workpiece 10 only by pulling out the thread-like adhesive material 30 from the bobbin 20 without requiring a process of peeling the release sheet from the thread-like adhesive material 30.
Although the embodiment and the modification of the present invention have been described in detail, the present invention is not limited to the above-described embodiment and modification, and various alterations or changes can be made within the scope of the gist of the present invention described in the claims.

Modification of Threading Method of Thread-Like Adhesive Material 30

FIGS. 16 and 17 are views illustrating a modification of the threading method of the thread-like adhesive material 30 in the winding device 100 according to the embodiment.
In the winding device 100 or 100-2 according to the embodiment, in the examples illustrated in FIGS. 4 to 6 , the thread-like adhesive material 30 is pulled out from the upper side (the positive side of the Z-axis) of the bobbin 20, and the bobbin 20 is rotated clockwise when viewed from the right side (Y-axis positive direction). Thus, the holding angle of the thread-like adhesive material 30 by the first guide roller 120-1 is increased, and hence the thread-like adhesive material 30 can be made less likely to fall off from the first guide roller 120-1.
In the winding device 100 or 100-2 according to the embodiment, the thread-like adhesive material 30 is threaded on the outer side of the first guide roller 120-1 and the outer side of the second guide roller 120-2 with the bobbin 20 side as the inner side in the examples illustrated in FIGS. 4 to 6 . However, as another example illustrated in FIG. 17 , the thread-like adhesive material 30 may be threaded on the outer side of the first guide roller 120-1 and the inner side of the second guide roller 120-2. That is, the thread-like adhesive material 30 may be threaded in an S-shape on the first guide roller 120-1 and the second guide roller 120-2. This enables the thread-like adhesive material 30 to be less likely to fall off from the first guide roller 120-1 and the second guide roller 120-2.
The present international application claims priority to Japanese Patent Application No. 2022-121411 filed on Jul. 29, 2022. The entire contents of Japanese Patent Application No. 2022-121411 are incorporated herein by reference.

REFERENCE SIGNS LIST

- 10 linear workpiece
- 10A outer circumferential surface
- 20 bobbin
- 20A outer circumferential surface
- 30 thread-like adhesive material
- 100, 100-2 winding device
- 110 bobbin holder
- 111 shaft portion
- 120A, 120B, 120C, 120D guide roller
- 120-1 first guide roller
- 120-2 second guide roller
- 121 shaft portion
- 122 groove portion
- 123 flange portion
- 140 cover
- 140A space
- 141 slit

Claims

1. A winding device for winding a thread-like adhesive material around an outer circumferential surface of a linear workpiece, the winding device comprising:

a bobbin holder holding a bobbin around which the thread-like adhesive material is wound, the bobbin being held rotatably; and

a guide roller provided on a path of the thread-like adhesive material between the linear workpiece and the bobbin holder, the guide roller having a groove portion on an outer circumferential surface of the guide roller and allowing the thread-like adhesive material pulled out from the bobbin to be threaded into the groove portion,

wherein the thread-like adhesive material is wound around the outer circumferential surface of the linear workpiece by integrally turning the bobbin holder and the guide roller around the linear workpiece.

2. A winding device for winding a thread-like adhesive material around an outer circumferential surface of a linear workpiece, the winding device comprising:

a bobbin holder holding a bobbin around which the thread-like adhesive material is wound, the bobbin being held rotatably, the bobbin being held rotatably; and

wherein the thread-like adhesive material is wound around the outer circumferential surface of the linear workpiece by rotating the linear workpiece around an axis of the linear workpiece.

3. The winding device according to claim 1,

wherein an inclination of the guide roller with respect to the bobbin is variable in accordance with an entry angle at which the thread-like adhesive material pulled out from the bobbin enters the groove portion.

4. The winding device according to claim 1,

wherein the guide roller has a non-adhesive treatment applied to a surface of the groove portion.

5. The winding device according to claim 1, further comprising:

a brake mechanism configured to brake rotation of the bobbin.

6. The winding device according to claim 1,

wherein the bobbin holder rotatably holds the bobbin around which the thread-like adhesive material is wound without interposing a release sheet.

7. A winding method for winding a thread-like adhesive material around an outer circumferential surface of a linear workpiece by using a winding device, the winding device including a bobbin holder holding a bobbin around which the thread-like adhesive material is wound, the bobbin being held rotatably; and a guide roller provided on a path of the thread-like adhesive material between the linear workpiece and the bobbin holder, the guide roller having a groove portion on an outer circumferential surface of the guide roller and allowing the thread-like adhesive material pulled out from the bobbin to be threaded into the groove portion, the winding method comprising:

integrally turning the bobbin holder and the guide roller around the linear workpiece to wind the thread-like adhesive material around the outer circumferential surface of the linear workpiece.

8. (canceled)

9. The winding method according to claim 7,

wherein an inclination of the guide roller with respect to the bobbin is variable in accordance with an entry angle at which the thread adhesive pulled out from the bobbin enters the groove portion such that the thread-like adhesive material is wound around the outer circumference of the linear workpiece while the inclination of the guide roller with respect to the bobbin is varied in accordance with the entry angle at which the thread-like adhesive material pulled out from the bobbin enters the groove portion.

10. The winding method according to claim 7,

wherein the guide roller has a non-adhesive treatment applied to a surface of the groove portion such that the thread-like adhesive material pulled out from the bobbin is wound around the outer circumferential surface of the linear workpiece without adhering to the surface of the groove portion.

11. The winding method according to claim 7,

wherein the winding device further includes a brake mechanism configured to brake rotation of the bobbin, and

wherein the thread-like adhesive material pulled out from the bobbin is wound around the outer circumferential surface of the linear workpiece while braking is applied to the rotation of the bobbin by the brake mechanism.

12. The winding method according to claim 7,

wherein the bobbin holder rotatably holds the bobbin around which the thread-like adhesive material is wound without interposing a release sheet such that the thread-like adhesive material pulled out from the bobbin is wound around the outer circumference surface of the linear workpiece without requiring a process of removing the release sheet from the thread-like adhesive material.