JP2021066066A - Bonding roller and spiral wire formation method using the same - Google Patents

Abstract

To provide a bonding roller which bonds a wire to a bonded surface in a spiral form without causing misalignment.SOLUTION: A bonding roller 1 is used to bond a wire w in a spiral form. The bonding roller 1 includes: a support shaft 2; and a flange-like part 3 which is supported by the support shaft 2 and protrudes to the radial outer side of the support shaft 2 farther than an outer peripheral surface 2a of the support shaft 2. The flange-like part 3 includes a first flange part 4 and a second flange part 5 which form a space larger than a diameter of the wire w therebetween in an axial direction of the support shaft 2. The first flange part 4 is disposed closer to one radial side of the spiral than the second flange part 5. The second flange part 5 may elastically deform to the radial inner side of the support shaft 2.SELECTED DRAWING: Figure 7

Description

The present invention relates to a sticking roller and a method for forming a spiral wire using the sticking roller.

The following Patent Document 1 describes a method for manufacturing a pneumatic tire using a core. The core has an outer surface that can form the inner surface of a pneumatic tire. A bead wire is spirally attached to the outer surface around the tire rotation axis by a pressing roller.

Specifically, the bead wire is attached so that the bead wire is attached along the tire circumferential direction at the pressing position by the pressing roller and the pressing position moves outward in the tire radial direction of the core. The tire rotation axis of the core is tilted continuously or stepwise.

Japanese Unexamined Patent Publication No. 2012-157996

The above-mentioned Patent Document 1 has room for study on suppressing the misalignment that occurs when the bead wire is attached.

The present invention has been devised in view of the above-mentioned actual conditions, and is a sticking roller capable of sticking a wire to a sticking surface without being displaced in a spiral shape, and a sticking roller using the roller. The main purpose is to provide a forming method for forming a shape.

The present invention is a sticking roller for winding a wire toward one side in the radial direction of a spiral and sticking the wire to the sticking surface, and has a support shaft having an outer peripheral surface for pressing the wire against the sticking surface. A collar-shaped portion that is supported by the support shaft and projects outward from the outer peripheral surface of the support shaft in the radial direction of the support shaft is included, and the collar-shaped portion includes the diameter of the wire in the axial direction of the support shaft. The first flange portion includes a first flange portion and a second flange portion that are more separated from each other, and the first collar portion is arranged on one side of the second collar portion in the radial direction of the spiral, and the second collar portion is located on one side in the radial direction of the spiral portion. , It is elastically deformable inward in the radial direction of the support shaft.

In the sticking roller according to the present invention, the radial distance of the support shaft between the outer peripheral surface of the first flange portion and the outer peripheral surface of the support shaft is 50% to 80% of the diameter of the wire. Is desirable.

In the sticking roller according to the present invention, it is desirable that the outer peripheral surface of the second flange portion can be elastically deformed to the same position as the outer peripheral surface of the support shaft.

In the sticking roller according to the present invention, the second flange portion is between an inner ring concentric with the support shaft, an outer ring separated from the inner ring on the outer side in the radial direction of the support shaft, and between the inner ring and the outer ring. It is desirable to include a spoke portion that elastically connects the two.

In the sticking roller according to the present invention, the sticking roller has a horizontal plate that is supported by the support shaft and is adjacent to the second flange portion, and the outer peripheral surface of the horizontal plate is inside the support shaft in the axial direction. It is desirable that it is tapered toward.

In the sticking roller according to the present invention, it is desirable that the outer peripheral surface of the horizontal plate is located inside the outer peripheral surface of the second flange portion after elastic deformation in the radial direction of the support shaft.

It is desirable that the sticking roller according to the present invention has a concave inner arc-shaped receiving portion for receiving the wire between the first flange portion and the second flange portion on the outer peripheral surface of the support shaft.

In the sticking roller according to the present invention, it is desirable that the wire forms a bead core of a pneumatic tire.

The present invention is a forming method for forming a spiral by continuously winding a wire on one side in the radial direction of the spiral using the sticking roller according to any one of claims 1 to 8.

The sticking roller of the present invention is for winding a wire toward one side in the radial direction of a spiral and sticking it to a sticking surface. The sticking roller has a support shaft having an outer peripheral surface for pressing the wire against the sticking surface, and a collar shape that is supported by the support shaft and projects outward from the outer peripheral surface of the support shaft in the radial direction of the support shaft. Includes part and. The flange-shaped portion includes a first flange portion and a second flange portion that are separated from each other by a diameter larger than the diameter of the wire in the axial direction of the support shaft. The first flange portion is arranged on one side of the spiral portion in the radial direction with respect to the second flange portion. The second flange portion is elastically deformable inward in the radial direction of the support shaft.

Since such a sticking roller can hold the wire between the first flange portion and the second flange portion, the position of the spiral of the wire is displaced in the radial direction at the time of sticking the wire. Suppress. Further, when the wire is attached once in the circumferential direction of the spiral, the second flange portion abuts on the wound wire and elastically deforms inward in the radial direction of the support shaft. As a result, the second flange portion is prevented from being caught by the attached wire, so that the smooth relative movement of the attached roller on one side in the radial direction of the spiral is not hindered. Further, since the attached wire is held between the attached wire adjacent to the spiral in the radial direction and the first flange portion, the displacement of the spiral in the radial direction is suppressed. Therefore, the sticking roller of the present invention can suppress the displacement of the spiral in the radial direction and stick the wire to the sticking surface in a spiral shape at a desired position.

It is sectional drawing of the pneumatic tire manufactured by using the sticking roller of this embodiment. It is a perspective view of the apparatus for manufacturing a tire. It is a side view of the apparatus of FIG. It is a front view of the inner core. It is a partial perspective view which shows the formation method of the inner core. (A) is an enlarged view of the cross section of the core near the bead forming surface, and (b) is a schematic view for explaining the attachment of the wire on the bead forming surface. It is sectional drawing of the sticking roller. It is the schematic explaining the sticking of a wire by a sticking roller. (A) is a perspective view of the second flange portion, and (b) is a side view of the second flange portion.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view of a pneumatic tire (hereinafter, may be simply referred to as a “tire”) T manufactured by using the sticking roller 1 (shown in FIG. 1) of the present embodiment. The tire T includes, for example, a carcass K bridged between the bead portions T1, a bead core Co embedded in the bead portion T1, and an apex rubber Ap sandwiching the bead core Co from both sides in the tire axial direction. The bead core Co includes, for example, an inner core C1 arranged inside the carcass K in the tire axial direction and an outer core C2 arranged outside the carcass K in the tire axial direction. The apex rubber Ap includes, for example, an inner apex A1 arranged inside the inner core C1 in the tire axial direction and an outer apex A2 arranged outside the outer core C2 in the tire axial direction. In this embodiment, the known configurations of Carcus K and Apex Rubber Ap are adopted. The sticking roller 1 of the present embodiment is not limited to the one for manufacturing the tire T.

FIG. 2 is a perspective view of the device S including the sticking roller 1 for manufacturing the tire T. FIG. 3 is a side view of the device S of FIG. As shown in FIGS. 2 and 3, the device S of the present embodiment includes a core N, a rotating device R for rotating the core N, and a sticking device P for attaching the wire w to the core N. I'm out. The device S is not limited to such an aspect.

The core N of the present embodiment includes an outer surface N1 capable of forming the inner cavity surface i (shown in FIG. 1) of the tire T. A component for forming various tires T including, for example, bead core Co, carcass K, and apex rubber Ap is attached to the outer surface N1 of the core N. The outer surface N1 of the core N is a pair of bead forming surfaces Na for forming the inner surface of the bead portion T1 of the tire T and a pair of sidewalls for forming the inner surface of the sidewall portion T2 (shown in FIG. 1). It includes a molding surface Nb. It is desirable that such core N is composed of a metal material, a heat-resistant resin, or the like that can withstand the heat and pressure during vulcanization.

The rotating device R includes a support base 101 that can move the floor surface in the horizontal direction (X-axis direction in this embodiment), and an L-shaped support frame 102 that is rotatably held by the support base 101 around the vertical axis. Includes a holding shaft 103 that is rotatably held by the support frame 102.

In the present embodiment, the support base 101 has a slide mechanism 104 including a guide rail 104a laid on the floor surface extending in the X-axis direction and an engaging portion 104b that engages with the guide rail 104a. As a result, the support base 101 can move in the X-axis direction. Further, the support base 101 of the present embodiment has a rotatable vertical axis 105 extending in the vertical direction (Z-axis direction).

The support frame 102 is configured to include, for example, a horizontally extending horizontal portion 102a and a vertical portion 102b connected to the horizontal portion 102a and extending in the vertical direction. The horizontal portion 102a is attached to, for example, the vertical axis 105.

The holding shaft 103 is held in a horizontal state on the upper end side of the vertical portion 102b, for example. In the present embodiment, the core N is detachably fixed to the holding shaft 103. This allows the core N to rotate about a horizontal axis. The rotation axis CL of the core N is, for example, the same as the rotation axis of the tire T.

Such a rotating device R can move the core N in the X-axis direction by the slide mechanism 104. Further, the vertical axis 105 of the rotating device R can tilt the rotating axis CL of the core N around the vertical axis 105.

The sticking device P of the present embodiment includes, for example, a sticking roller 1, a plurality of well-known structure transport rollers 107 for transporting the wire w to the sticking roller 1, and a well-known structure cutting tool 108 for cutting the wire w. Includes.

The wire w is wound around, for example, a reel (not shown). The outer peripheral surface of the wire w is covered with unvulcanized rubber, for example, during transportation to the core N. Such a wire w has adhesiveness on the surface and has a high adhesive force with the constituent members of the tire T attached to the core N.

The transport roller 107 is attached, for example, to a fixed plate 109 having a vertical mounting surface so that it can rotate horizontally. The transport roller 107 is provided with a groove 110 on the outer peripheral surface for transporting the wire w to prevent the wire w from falling off.

In the present embodiment, the sticking roller 1 sticks the wire w on the outer surface N1 of the core N. The sticking roller 1 is supported by, for example, the actuator 111. The actuator 111 moves the sticking roller 1 in the Y-axis direction and sticks the wire w on the outer surface N1 of the core N by the pressing force of the actuator 111.

Next, a method of manufacturing the tire T using such a device S will be described. In the manufacturing method of the present embodiment, the constituent members of the inner apex A1, the inner core C1, the carcass K, the outer core C2, and the outer apex A2 are attached to the outer surface N1 of the core N in this order. Since the inner apex A1, the carcass K and the outer apex A2 are molded by a well-known method, the description thereof will be omitted. Further, since the inner core C1 and the outer core C2 are molded by the same method, the molding method of the inner core C1 will be described as a representative in the present specification.

FIG. 4 is a front view (side view of the core N) of the inner core C1. As shown in FIG. 4, the inner core C1 is formed by one continuous wire w. FIG. 5 is a partial perspective view showing a method of forming the inner core C1. As shown in FIGS. 4 and 5, the inner core C1 is formed by spirally winding the wire w on the bead forming surface Na. Specifically, the inner core C1 is formed by rotating the core N held by the holding shaft 103 and sticking the wire w carried by the transport roller 107 to the sticking surface 120 by the sticking roller 1. .. At this time, by moving the support base 101 and the support frame 102, the wire w being attached can be moved in the radial direction of the core N. As a result, the wire w is formed in a spiral shape centered on the rotation axis CL of the core N, for example. The inner core C1 is not limited to the one formed in such an embodiment, and may be formed, for example, by moving the sticking device P in the radial direction of the core N while rotating the core N. .. Further, the inner core C1 may be formed by fixing the core N and moving the sticking device P in a spiral direction in the circumferential direction of the core N by a moving device having a well-known structure (not shown).

In this way, the inner core C1 is formed by winding the wire w toward one side in the radial direction of the spiral. In the present embodiment, the inner core C1 is formed by winding the wire w from the inside to the outside in the radial direction of the spiral (in the present embodiment, the radial direction of the core N). The inner core C1 may be formed by, for example, winding the wire w from the outside to the inside in the radial direction of the spiral.

FIG. 6A is an enlarged view of the vicinity of the bead forming surface Na in the cross section passing through the rotation axis CL of the core N. As shown in FIG. 6A, the inner core C1 of the present embodiment is formed on the attachment surface 120 on the bead forming surface Na. In this embodiment, the surface to be attached 120 includes an inner apex A1 wound on the bead forming surface Na. Such a sticking surface 120 is formed, for example, in a smooth curved shape (wavy shape) inside and outside the core N in the radial direction. Specifically, the sticking surface 120 is connected to the first curved surface portion 120a extending outward in the radial direction of the core N toward the outside in the radial direction of the core N, and the core N connected to the first curved surface portion 120a. It includes a second curved surface portion 120b extending inward in the axial direction of the core N to the outside in the radial direction. As described above, the inner core C1 of the present embodiment is formed on the curved surface to be attached 120.

FIG. 7 is a cross-sectional view of the sticking roller 1. As shown in FIG. 7, the sticking roller 1 of the present embodiment has a support shaft 2 having an outer peripheral surface 2a for pressing the wire w against the sticking surface 120, and an outer peripheral surface 2a of the support shaft 2 supported by the support shaft 2. It includes a flange-shaped portion 3 projecting outward in the radial direction of the support shaft 2.

The flange-shaped portion 3 of the present embodiment includes a first flange portion 4 and a second flange portion 5 that are separated from each other in the axial direction of the support shaft 2 by a diameter d1 of the wire w (shown in FIG. 6B). I'm out. As a result, the wire w can be held between the first flange portion 4 and the second flange portion 5, so that the positional deviation of the spiral of the wire w in the radial direction is suppressed when the wire w is attached. .. If the axial distance L of the support shaft 2 between the first flange portion 4 and the second flange portion 5 is excessively larger than the diameter d1 of the wire w, the misalignment cannot be suppressed. Therefore, it is desirable that the distance L adopts a value that allows the wire w to be smoothly attached while suppressing the misalignment. The diameter d1 of the wire w is preferably about 1.5 to 3.0 mm, for example.

The first flange portion 4 is arranged on one side in the radial direction of the spiral with respect to the second flange portion 5. In the present embodiment, the first flange portion 4 is arranged outside the second flange portion 5 in the radial direction of the spiral. In other words, the first flange portion 4 is arranged on the side where the wire w is wound rather than the second flange portion 5.

FIG. 8 is a schematic view illustrating attachment of the wire w by the attachment roller 1. The second flange portion 5 of the present embodiment is elastically deformable inward in the radial direction of the support shaft 2. As a result, as shown in FIG. 8, when the wire w is attached once in the circumferential direction of the spiral, the second flange portion 5 abuts on the wound wire w1 and the radius of the support shaft 2 thereafter. Elastically deforms inward in the direction. As a result, the second flange portion 5 is prevented from being caught by the attached wire w1, so that the second flange portion 5 does not hinder the smooth relative movement of the attached roller 1 to the outside in the radial direction of the spiral. Further, since the attached wire w2 is held between the attached wire w1 adjacent to the spiral in the radial direction and the first flange portion 4, the positional deviation in the radial direction of the spiral is suppressed. Therefore, the sticking roller 1 of the present embodiment can suppress the positional deviation of the spiral in the radial direction and form the wire w in a spiral shape at a desired position. From this point of view, it is desirable that the outer peripheral surface 5a of the second flange portion 5 can be elastically deformed to the same position as the outer peripheral surface 2a of the support shaft 2.

As shown in FIG. 7, the support shaft 2 of the present embodiment is supported by the spindle portion 6 supported by the support piece 111a extending from the actuator 111, the rotary cylinder 7 held by the spindle portion 6, and the rotary cylinder 7. It includes a protrusion 8 that protrudes outward in the radial direction of the shaft 2 and has an outer peripheral surface 2a. The spindle portion 6 has, for example, a columnar shape, and both ends thereof are supported by the support piece 111a. The rotary cylinder 7 has a cylindrical shape, for example, and is concentrically arranged on the outer side in the radial direction of the spindle portion 6 via a bearing 9. The rotary cylinder 7 of the present embodiment can rotate independently of the spindle portion 6. In the present embodiment, the protrusion 8 is formed in a ring shape and is rotatably supported by the spindle portion 6 via the rotary cylinder 7.

In the present embodiment, the outer peripheral surface 2a of the support shaft 2 preferably has a concave inner arc-shaped receiving portion 10 that receives the wire w between the first flange portion 4 and the second flange portion 5. Such a receiving portion 10 increases the contact area between the outer peripheral surface 2a and the wire w, and suppresses the misalignment of the wire w to a high degree.

The first flange portion 4 is formed in a ring shape, for example, and is rotatably supported by the spindle portion 6 via a rotary cylinder 7. The first flange portion 4 has an outer peripheral surface 4a facing the attachment surface 120 side and an inward surface 4b facing the second flange portion 5 side and protruding outward in the radial direction of the support shaft 2 from the protrusion 8. Have. The inward surface 4b of the present embodiment is a portion that comes into contact with the wire w when the wire w is attached, and suppresses the displacement thereof.

The radial distance (maximum distance) h1 of the support shaft 2 between the outer peripheral surface 4a of the first flange portion 4 and the outer peripheral surface 2a of the support shaft 2 is 50% to 80% of the diameter d1 of the wire w. Is desirable. Such a first flange portion 4 can reliably hold the wire w and suppress damage caused by the first flange portion 4 coming into contact with the surface to be attached surface 120.

FIG. 9A is a perspective view of the second flange portion 5. FIG. 9B is a side view of the second flange portion 5. As shown in FIG. 9, in the present embodiment, the second flange portion 5 includes an inner ring 13 concentric with the support shaft 2, an outer ring 14 separated from the inner ring 13 radially outward of the support shaft 2, and an inner ring. It includes a spoke portion 15 that elastically connects the 13 and the outer ring 14.

The inner ring 13 and the outer ring 14 are formed in a ring shape, for example. In the present embodiment, the inner ring 13 is rotatably supported by the spindle portion 6 (shown in FIG. 7) via the rotary cylinder 7. In the present embodiment, the outer ring 14 has an inner diameter larger than the outer diameter of the inner ring 13. The outer ring 14 is arranged concentrically with the inner ring 13, for example.

The spoke portion 15 of the present embodiment is formed so as to spirally extend from the outer peripheral surface 13o of the inner ring 13 to the inner peripheral surface 14i of the outer ring 14. As a result, a gap 16 in which the spoke portion 15 is not provided is provided between the outer ring 14 and the inner ring 13. Such spoke portions 15 can elastically deform the outer ring 14 in the radial direction of the support shaft 12 through the gap 16.

The gap 16 of the present embodiment includes an inner portion 16a arranged between the inner ring 13 and the spoke portion 15 and an outer portion 16b arranged between the spoke portion 15 and the outer ring 14. In the inner portion 16a, for example, the length d2 in the radial direction gradually increases toward one direction side in the circumferential direction of the support shaft 2 (in the present embodiment, the direction in which the spoke portion 15 extends from the inner ring 13 to the outer ring 14 side). There is. In the outer portion 16b, for example, the length d3 in the radial direction gradually decreases toward the unidirectional side in the circumferential direction of the support shaft 2. According to such an embodiment, it is desirable that the second flange portion 5 has the same amount of elastic deformation in the radial direction of the support shaft 2 at any position in the circumferential direction of the support shaft 2.

As shown in FIG. 8, the second flange portion 5 further has an inward surface 5b facing the first flange portion 4 side. The inward surface 5b of the present embodiment is a portion that comes into contact with the wire w when the wire w is attached, and suppresses the positional deviation thereof.

When the radial distance h1 of the support shaft 2 between the outer peripheral surface 4a of the first flange portion 4 and the outer peripheral surface 2a of the support shaft 2 is larger than the diameter d1 of the wire w, the wire w is attached to the surface 120 to be attached. It may not be possible to apply pressing force. Even if the radial distance (maximum distance) h2 of the support shaft 2 between the outer peripheral surface 5a of the second flange portion 5 and the outer peripheral surface 2a of the support shaft 2 is larger than the diameter d1 of the wire w, the second flange portion Since 5 is elastically deformed, a pressing force can be applied to the wire w. From this point of view, it is desirable that the distance h1 is smaller than the distance h2.

Although not particularly limited, the radial distance h2 of the support shaft 2 between the outer peripheral surface 5a of the second flange portion 5 and the outer peripheral surface 2a of the support shaft 2 is 50% or more of the diameter d1 of the wire w. Is desirable, and 70% or more is even more desirable. Further, the distance h2 is preferably 100% or less of the diameter d1 of the wire w, and more preferably 80% or less.

FIG. 6B is a schematic view for explaining the attachment of the wire w to the attachment surface 120 on the bead forming surface Na. As shown in FIG. 6B, the surface to be attached 120 of the present embodiment includes the second curved surface portion 120b. For example, when the wire w is attached to the second curved surface portion 120b, the newly attached wire w2 is arranged inside the core N in the axial direction with respect to the already attached wire w1. In this case, in order to move the sticking roller 1 smoothly, the outer peripheral surface 5a of the second flange portion 5 can be elastically deformed to a position inside the support shaft 2 in the radial direction with respect to the outer peripheral surface 2a of the support shaft 2. Is even more desirable.

As shown in FIG. 8, the sticking roller 1 further has a horizontal plate 18 supported by the support shaft 2 and adjacent to the second flange portion 5. In the present embodiment, the horizontal plate 18 has a ring shape and is rotatably supported by the spindle portion 6 via the rotary cylinder 7. The horizontal plate 18 is arranged outside the support shaft 2 in the axial direction with respect to the second flange portion 5.

In the present embodiment, the outer peripheral surface 18a of the horizontal plate 18 is tapered inward in the axial direction of the support shaft 2. Such a horizontal plate 18 suppresses contact with the wire w attached to the surface to be attached 120.

It is desirable that the outer peripheral surface 18a of the horizontal plate 18 is located inside the outer peripheral surface 5a of the second flange portion 5 after elastic deformation in the radial direction of the support shaft 2. Such a horizontal plate 18 further reduces the chance of contact with the wire w after sticking, so that the smooth movement of the sticking roller 1 is more effectively ensured.

As described above, the sticking roller 1 of the present embodiment includes the first flange portion 4 and the second flange portion 5, and the second flange portion 5 elastically deforms inward in the radial direction of the support shaft 2, so that the wire w is attached. Even if the speed is increased, the wire w can be attached without being displaced. Therefore, the sticking roller 1 can increase the productivity. Further, the sticking roller 1 can stick a thick wire w by increasing the axial length L of the support shaft 2 between the first flange portion 4 and the second flange portion 5, for example. .. In this way, the sticking roller 1 can increase the productivity.

Although the particularly preferable embodiments of the present invention have been described in detail above, the present invention is not limited to the illustrated embodiments and can be modified into various embodiments.

A spiral inner core was manufactured based on the specifications in Table 1 using the apparatus shown in FIG. 2 and the sticking roller having the basic structure shown in FIG. 7, and the shape of the inner core at this time was visually confirmed by a tester. Was done. The result is that the inner core that is judged to be unacceptable due to the misalignment of the wire is disabled, and the inner core that is judged to be passed without the wire being misaligned is considered to be good.
The results are shown in Table 1. “Standard” in Table 1 is a wire having a diameter of 1.8 mm, and “thick” is a wire having a diameter of 2.2 mm. Further, the first flange portion of the sticking roller has the same specifications as in FIG. 7.

As a result of the test, it can be understood that the sticking roller of the example can form a spiral inner core without the misalignment of the wire even if the sticking speed and the diameter of the wire are increased as compared with the roller of the comparative example.

1 Sticking roller 2 Support shaft 2a Outer surface of support shaft 3 Flange-shaped part 4 1st brim part 5 2nd brim w Wire

Claims (9)

A sticking roller for winding a wire toward one side in the radial direction of a spiral and sticking it to a sticking surface.
A support shaft having an outer peripheral surface for pressing the wire against the attachment surface, and a collar-shaped portion supported by the support shaft and protruding outward in the radial direction of the support shaft from the outer peripheral surface of the support shaft.
The flange-shaped portion includes a first flange portion and a second flange portion that are separated from each other by a diameter larger than the diameter of the wire in the axial direction of the support shaft.
The first flange portion is arranged on one side in the radial direction of the spiral from the second flange portion.
The second flange portion is elastically deformable inward in the radial direction of the support shaft.
Sticking roller. The sticking roller according to claim 1, wherein the radial distance of the support shaft between the outer peripheral surface of the first flange portion and the outer peripheral surface of the support shaft is 50% to 80% of the diameter of the wire. .. The sticking roller according to claim 1 or 2, wherein the outer peripheral surface of the second flange portion can be elastically deformed to the same position as the outer peripheral surface of the support shaft. The second flange portion is a spoke portion that elastically connects the inner ring concentric with the support shaft, the outer ring separated from the inner ring radially outward of the support shaft, and the inner ring and the outer ring. The sticking roller according to any one of claims 1 to 3, including the above. The sticking roller has a horizontal plate supported by the support shaft and adjacent to the second flange portion.
The sticking roller according to any one of claims 1 to 4, wherein the outer peripheral surface of the horizontal plate is tapered inward in the axial direction of the support shaft. The sticking roller according to claim 5, wherein the outer peripheral surface of the horizontal plate is located inside the outer peripheral surface of the second flange portion after elastic deformation in the radial direction of the support shaft. The sticking roller according to any one of claims 1 to 6, wherein the outer peripheral surface of the support shaft has a concave arc-shaped receiving portion for receiving the wire between the first flange portion and the second flange portion. The sticking roller according to any one of claims 1 to 7, wherein the wire forms a bead core of a pneumatic tire. A method for forming a spiral by continuously winding a wire on one side in the radial direction of the spiral using the sticking roller according to any one of claims 1 to 8.

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