Bead filler attaching device, holding piece, and method for manufacturing preset beads

Abstract

To provide a bead filler application device that does not require sequential part replacement or adjustment even if a shape or size of a bead filler is slightly different, thereby realizes appropriate bead filler application; a holding piece; and a preset bead manufacturing method.SOLUTION: A bead filler application device 100 comprises: a mounting table 1 for mounting a bead filler 91; and a holding piece 5 that sandwiches the bead filler 91 between the holding piece and the mounting table 1. The mounting table 1 comprises: an inclined surface portion 10, which is an annular state in top view, is inclined downward toward a radially outer side, and on which the bead filler 91 is mounted; and a bead core supporting portion 3 that supports an inner peripheral surface of a bead core 95. The holding piece 5 comprises: a pressing portion 6; and a biasing portion 7. The biasing portion 7 biases the bead filler 91 placed on the inclined surface portion 10 toward the inclined surface portion 10. The pressing portion 6 presses the bead filler 91 placed on the inclined surface portion 10 against the bead core 95 supported by the bead core supporting portion 3 and the inclined surface portion 10.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a bead filler attaching device, a holding piece, and a method for manufacturing a preset bead.

Background Art

[0002] Patent Document 1 describes a method and an apparatus for manufacturing a bead member in relation to the manufacture of a pneumatic tire. In this manufacturing method, a bead filler having a predetermined cross-sectional shape is wound around the outer periphery of an annular bead wire to manufacture a bead member. The bead wire is held on a rotating table. The bead filler is wound around the outer periphery of the bead wire while rotating the bead wire in the circumferential direction by the rotating table. The bead filler is given a force directed radially inward by a crimping roller and is crimped to the bead wire.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] As described in Patent Document 1, there are cases where a bead member is manufactured by winding a bead filler around the outer periphery of a bead core such as an annular bead wire held on a rotating table and attaching the bead filler to the outer periphery of the bead core by crimping or the like. In this case, a holding mechanism for pressing the bead filler against the outer peripheral surface of the bead core is used. As the holding mechanism, there are cases where the above-described crimping roller or a holding piece having a spatula-like shape or the like is used.

[0005] Bead fillers are set in various shapes and sizes according to the required characteristics of the tires to be manufactured. Therefore, in order to properly attach the bead filler, it is desirable to use a holding mechanism such as a holding piece having a shape adapted to the shape and size of the bead filler. However, it is inefficient to use different holding mechanisms for each individual bead filler. For example, problems such as the labor of adjusting and replacing the holding mechanism, an increase in the number of parts, and an associated increase in cost will occur. Therefore, even if the shape and size of the bead filler are somewhat different, it is desirable to provide an apparatus and method that can realize proper attachment of the bead filler without requiring sequential part replacement or adjustment and following this.

[0006] The present invention has been made in view of such a situation, and an object thereof is to provide a bead filler attaching apparatus, a holding piece, and a method for manufacturing a preset bead that can realize proper attachment of a bead filler without requiring sequential part replacement or adjustment and following this even if the shape and size of the bead filler are somewhat different.

Means for Solving the Problems

[0007] The bead filler attaching apparatus according to the present invention for achieving the above object includes a mounting table on which a bead filler is placed, and a holding piece that sandwiches the bead filler between the mounting table, The mounting table is relatively rotatable with respect to the holding piece, has an annular shape in a top view and is inclined downward toward the radially outer side, and has an inclined surface portion on which the bead filler is placed, and a bead core support portion that supports the inner peripheral surface of the bead core, and The holding piece is a pressing portion that sandwiches the bead filler between the inclined surface portion, a biasing portion disposed on a side farther from the bead core support portion than the pressing portion, and The biasing portion biases the bead filler placed on the inclined surface portion against the inclined surface portion, The pressing portion presses the bead filler placed on the inclined surface portion against the bead core supported by the bead core support portion and the inclined surface portion.

[0008] According to the above configuration, even if the shape and size of the bead filler are somewhat different, it is not necessary to perform sequential component replacement or adjustment, and appropriate attachment of the bead filler can be realized following this. That is, when manufacturing a preset bead by attaching a bead filler to the bead core supported by the bead core support portion, first, place the bead filler on the inclined surface portion of the mounting table and rotate the mounting table relatively in the circumferential direction of the inclined surface portion. While rotating the mounting table, the holding piece sandwiches the bead filler between the mounting table. At this time, since the biasing portion is arranged on the side farther from the bead core support portion than the pressing portion of the holding piece, the pressing portion of the holding piece can abut and press against the bead filler on the side closer to the bead core. Thereby, the biasing portion can abut and bias the bead filler on the side farther from the bead core than the pressing portion.

[0009] Also, when sandwiching the bead filler between the mounting table, the biasing portion of the holding piece biases the bead filler placed on the inclined surface portion against the inclined surface portion. That is, even when the size and shape of the bead filler are somewhat different, the biasing portion deforms following the changes in the size and shape of each bead filler and biases the bead filler. Thereby, the bead filler is stably held on the inclined surface portion.

[0010] Also, the pressing portion of the holding piece presses the bead filler placed on the inclined surface portion against the bead core and the inclined surface portion. Thereby, attachment of the bead filler to the bead core is realized. Note that the adhesion for attachment can be performed by crimping. Since the pressing portion presses the bead filler on the side closer to the bead core than the biasing portion, the pressing effect of the pressing portion is less affected by changes in the size and shape of the bead filler. That is, the bead filler is stably pressed against the bead core.

[0011] Due to the actions of the biasing portion and the pressing portion as described above, as described above, even if the shape and size of the bead filler are somewhat different, it is possible to realize appropriate attachment of the bead filler following this without requiring sequential component replacement or adjustment. Further, due to this effect, productivity is improved.

[0012] The bead filler attaching device according to the present invention is The placement table is circular in top view and is rotatable in its circumferential direction. The bead core support portion is cylindrical or columnar and extends upward from a portion radially inner than the inner circumference of the ring of the inclined surface portion, and supports the inner circumferential surface of the bead core on its outer circumferential surface. The holding piece further has a plate-shaped main body portion having a first surface portion facing the inclined surface portion. The pressing portion is disposed on the first surface portion. The biasing portion is disposed on the first surface portion on the side spaced apart from the bead core support portion relative to the pressing portion. The pressing portion may press the bead filler placed on the inclined surface portion against the bead core fitted outside the bead core support portion and the inclined surface portion.

[0013] According to the above configuration, a bead filler is attached to a bead core fitted and supported outside the bead core support portion. When attaching a bead filler to the bead core, first, the bead core is fitted outside the cylinder of the bead core support portion. Then, the bead filler is placed on the inclined surface portion of the placement table, and the placement table is rotated in the circumferential direction. By the rotation of the placement table, the bead filler is drawn into the circumferential direction of the inclined surface portion. While rotating the placement table, the holding piece sandwiches the bead filler between itself and the placement table. At this time, since the biasing portion is disposed on the side of the first surface portion of the holding piece that is spaced apart from the bead core support portion relative to the pressing portion, the pressing portion of the holding piece can contact and press the bead filler on the side close to the bead core. As a result, the bead filler is stably pressed against the bead core.

[0014] The bead filler attaching device according to the present invention is The pressing portion presses the upper surface of the end portion on the side close to the bead core support portion in the bead filler. The biasing portion may bias a portion of the bead filler that is spaced apart from the bead core support portion rather than the portion pressed by the pressing portion.

[0015] According to the above configuration, since the pressing portion presses the upper surface of the end portion on the side close to the bead core support portion in the bead filler, the bead filler can be stably attached to the bead core. In addition, by biasing a portion of the bead filler that is spaced apart from the bead core support portion rather than the portion pressed by the pressing portion, the biasing portion, together with the pressing portion, holds both ends of the bead filler in the direction of approaching and separating from the bead core support portion, and can stably hold it on the mounting table. In particular, by biasing a portion of the bead filler that is spaced apart from the bead core support portion, it is possible to avoid a problem in which the end portion on the side spaced apart from the bead core support portion in the bead filler is turned up.

[0016] The bead filler attaching device according to the present invention The holding piece further has a plate-shaped main body portion having a first surface facing the inclined surface portion. The biasing portion may be biased in a direction away from the first surface.

[0017] According to the above configuration, the elastic member can surely bias the bead filler with respect to the mounting table while being supported by the plate-shaped main body portion.

[0018] The bead filler attaching device according to the present invention The holding piece is allowed to approach and separate with respect to the bead core support portion and the inclined surface portion. The biasing portion has a plate-shaped portion arranged along the first surface. The plate-shaped portion is located at the end portion on the side spaced apart from the bead core support portion and is a supported portion supported by the main body portion, In a state where the holding piece is separated from the bead filler, it has a separation plate portion whose plate surface is separated from the first surface portion from the side separated from the bead core support portion toward the approaching side. In a state where the holding piece sandwiches the bead filler between the holding piece and the mounting table, the separation plate portion may abut against and bias the bead filler.

[0019] According to the above configuration, the holding piece can approach and separate from the bead filler, and a state transition between a state of being separated from the bead filler and a state of sandwiching the bead filler between the holding piece and the mounting table becomes possible. And in the process of the holding piece approaching and abutting against the bead filler, the end portion on the side approaching the bead filler in the separation plate portion abuts against the bead filler at a relatively initial stage and biases it. Thereby, in the process until the holding piece sandwiches and holds the bead filler, the bead filler can be temporarily fixed so to speak. Note that temporary fixing means fixing the position of the bead filler so that the bead filler does not shift in the process until it is sandwiched and held.

[0020] The plate-like portion supports the supported portion by the main body portion. And in a state where the holding piece sandwiches the bead filler between the holding piece and the mounting table, the bead filler can be biased through the separation plate portion.

[0021] In a state where the holding piece is separated from the bead filler, the separation plate portion is in a state where its plate surface is separated from the first surface portion from the side separated from the bead core support portion toward the approaching side. Therefore, when transitioning from a state where the holding piece is separated from the bead filler to a state where the holding piece sandwiches the bead filler between the holding piece and the mounting table, as the holding piece approaches the bead filler, the plate surface of the separation plate portion abuts against the bead filler, and it becomes possible to stably bias the bead filler by surface contact with the bead filler.

[0022] The bead filler attaching device according to the present invention is The plate-shaped portion further has a bent portion that is bent in a direction approaching the first surface portion. The separation plate portion may be disposed between the bent portion and the supported portion.

[0023] According to the above configuration, when the holding piece transitions from a state of being separated from the bead filler to a state of sandwiching the bead filler between the holding piece and the mounting table, first, the bent portion comes into contact with the bead filler.

[0024] The bead filler attaching device according to the present invention In a state where the holding piece is separated from the bead filler, the separation plate portion may have a plate surface that approaches the bead filler from a side separated from the bead core support portion to a side approaching the bead filler.

[0025] According to the above configuration, when the holding piece transitions from a state of being separated from the bead filler to a state of sandwiching the bead filler between the holding piece and the mounting table, first, the vicinity of the end portion on the side of the separation plate portion close to the bead core support portion comes into contact with the bead filler. Thereby, the bead filler can be held on the inclined surface portion. Thereafter, as the holding piece approaches the bead filler, the plate surface of the separation plate portion comes into contact with the bead filler, and the bead filler can be stably biased.

[0026] The bead filler attaching device according to the present invention In a state where the holding piece sandwiches the bead filler between the holding piece and the mounting table, the supported portion and the end portion of the separation plate portion are separated from the mounting table. The distance between the end portion on the supported portion side of the separation plate portion and the inclined surface portion may be 0.5 mm or more and 1.0 mm or less.

[0027] According to the above configuration, by setting the distance between the end portion on the supported portion side of the separation plate portion and the inclined surface portion to be 0.5 mm or more and 1.0 mm or less, contact between the holding piece and the inclined surface portion can be avoided, and damage to the mounting table such as scratching can be avoided.

[0028] The bead filler attaching device according to the present invention is The biasing portion may have a bag body that expands by the supply of fluid.

[0029] According to the above configuration, it can be biased by the expansion of the bag body.

[0030] The bead filler attaching device according to the present invention is The holding piece further has a plate-shaped main body portion having a first surface portion facing the inclined surface portion, The pressing portion may have a pressing surface that inclines toward the surface opposite to the first surface portion from the side separated from the bead core support portion toward the approaching side.

[0031] According to the above configuration, the pressing surface can be brought into surface contact with the surface of the bead filler to stably press it.

[0032] The bead filler attaching device according to the present invention is The device further includes a drive mechanism that moves the holding piece along the direction approaching the inclined surface portion and inward in the radial direction of the mounting table, The drive mechanism may be fixed relative to the mounting table.

[0033] According to the above configuration, the drive mechanism enables the holding piece to approach and separate from the bead core support portion and the inclined surface portion, that is, the holding piece can approach and separate from the bead filler. And the holding piece can be evenly pressed against the bead filler. Thereby, the bead filler can be stably held on the mounting table.

[0034] The holding piece according to the present invention for achieving the above object is A holding piece for adhering a bead filler to a bead core, A rectangular plate-shaped main body portion, A pressing portion disposed at one end side in the longitudinal direction of the main body portion and on a first surface portion that is one surface portion of the main body portion, On the other end side in the longitudinal direction in the main body portion, and the biasing portion disposed on the first surface portion, has, The biasing portion is biasable in a direction along a direction perpendicular to the first surface portion, The direction in which the pressing portion presses is toward the one end side rather than the direction in which the biasing portion biases.

[0035] The holding piece according to the present invention, The biasing portion may be biasable in a direction away from the first surface portion.

[0036] The holding piece according to the present invention, The biasing portion has a plate-like portion disposed along the first surface portion, The plate-like portion, is located at an end portion on the other end side and is a supported portion supported by the main body portion, has a separation plate portion whose plate surface is separated from the first surface portion from the other end side to the one end side, At least a part of the separation plate portion may be disposed at a position separated from the first surface portion more than the pressing portion in a direction perpendicular to the first surface portion.

[0037] According to each of the above configurations, a holding piece suitable for the above-described bead filler attaching device can be provided. Further, the same operational effects as those of the above-described bead filler attaching device can be achieved

[0038] A method for manufacturing a preset bead according to the present invention for achieving the above object, a mounting table on which a bead filler is mounted, a holding piece that sandwiches the bead filler between the holding piece and the mounting table, The mounting table, is relatively rotatable with respect to the holding piece, has an annular top view and is inclined downward toward the radially outer side, and an inclined surface portion on which the beef filler is mounted, a bead core support portion that supports the inner peripheral surface of the bead core, A method for manufacturing a preset bead using a bead filler attaching device having including a clamping step of clamping a bead filler between the placement table and the holding piece, The clamping step is a biasing step of biasing the bead filler placed on the inclined surface portion against the inclined surface portion, a pressing step of pressing the bead filler placed on the inclined surface portion against the bead core supported by the bead core support portion and the inclined surface portion at a position closer to the bead core support portion than the position where biasing is performed in the biasing step.

[0039] The method for manufacturing a preset bead according to the present invention The clamping step may further include a moving step of moving the holding piece along a direction close to the inclined surface portion and inward in the radial direction of the inclined surface portion.

[0040] According to each of the above methods, the same operational effects as those of the above-described bead filler attaching device can be achieved.

Effects of the Invention

[0041] Provided are a bead filler attaching device, a holding piece, and a method for manufacturing a preset bead that can realize appropriate attachment of a bead filler following the shape and size of the bead filler even if they are somewhat different, without requiring sequential component replacement or adjustment.

Brief Description of the Drawings

[0042]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Mode for Carrying Out the Invention

[0043] Based on the drawings, a bead filler attaching device, a holding piece, and a method for manufacturing a preset bead according to an embodiment of the present invention will be described.

[0044] (Explanation of the Outline) In FIGS. 1 to 3, a bead filler attaching device 100 according to the present embodiment (hereinafter, may be simply referred to as the attaching device 100) is shown. FIG. 1 is a side view of the attaching device 100. FIG. 2 is a side view of the attaching device 100. FIG. 3 is a side view seen from a side intersecting at a right angle with FIG. 1. The method for manufacturing a preset bead according to the present embodiment is realized by this bead filler attaching device 100 as an example.

[0045] As shown in FIGS. 1 to 3, the attaching device 100 includes a mounting table 1 on which a bead filler is placed, and a holding piece 5 that sandwiches the bead filler 91 between the mounting table 1.

[0046] The mounting table 1 has an annular shape in top view and is inclined downward toward the radially outer side, and includes an inclined surface portion 10 on which the bead filler 91 is mounted, and a bead core support portion 3 that supports the inner peripheral surface of the bead core 95. Hereinafter, with reference to the mounting table 1 in FIGS. 1 to 3, the side of the bead core support portion 3 is referred to as up, and the side of the mounting table 1 is referred to as down when viewed from the bead core support portion 3, and the following description will be based on these vertical directions.

[0047] When viewed in relation to the mounting table 1, as shown in FIG. 1, the holding piece 5 has a pressing portion 6 that sandwiches the bead filler 91 between the inclined surface portion 10, and a biasing portion 7 that is disposed on the lower surface side of the main body portion 50 and is spaced farther from the bead core support portion 3 than the pressing portion 6.

[0048] The biasing portion 7 biases the bead filler 91 placed on the inclined surface portion 10 toward the inclined surface portion 10.

[0049] The pressing portion 6 presses the bead filler 91 placed on the inclined surface portion 10 against the bead core 95 supported by the bead core support portion 3 and the inclined surface portion 10.

[0050] The method for manufacturing the preset bead of the present embodiment includes a sandwiching step of sandwiching the bead filler 91 between the mounting table 1 and the holding piece 5. The sandwiching step includes a biasing step and a pressing step. The biasing step biases the bead filler 91 placed on the inclined surface portion 10 toward the inclined surface portion 10. The pressing step presses the bead filler 91 placed on the inclined surface portion 10 against the bead core 95 supported by the bead core support portion 3 and the inclined surface portion 10 at a position closer to the bead core support portion 3 than the position where the biasing is performed in the biasing step.

[0051] The method for manufacturing the preset bead and the pasting device 100 according to the present embodiment can realize the pasting of the appropriate bead filler 91 following different shapes and sizes without requiring sequential component replacement or adjustment of components such as the holding piece 5 even if the shape and size of the bead filler 91 are somewhat different.

[0052] (Detailed description) As shown in FIG. 1, the pasting device 100 includes a mounting table 1, a base 8 that supports the mounting table 1 from below, an actuator 82 fixed to the base 8, and a holding piece 5. The pasting device 100 is a device for manufacturing a preset bead 9 (see FIG. 6) by pasting a bead filler 91 (see FIGS. 1 and 4), which is a member for forming a tire of a vehicle, around the outer periphery of a bead core 95 (see FIGS. 1 and 5) by winding and adhering it. The preset bead 9 is a component of a tire for fixing both ends of a carcass cord, which forms the skeleton of the tire, and for forming a shape for fixing the tire to a rim.

[0053] As shown in FIGS. 1 and 5, an example of the bead core 95 is formed by winding a plurality of turns in a ring shape in the tire circumferential direction while winding a bead wire made of a metal wire or the like around a forming drum or the like.

[0054] As shown in FIGS. 1 to 4, the bead filler 91 is a ribbon-shaped member made of rubber. An example of the shape of the bead filler 91 is such that, as shown in FIG. 4, the cross-sectional shape of the cross-section intersecting the longitudinal direction is triangular. As shown in FIG. 6, the preset bead 9 can be manufactured, for example, by pasting this side portion along the outer peripheral surface of the bead core 95 with the surface including the short side portion in the triangular cross-sectional shape of the bead filler 91 (hereinafter sometimes simply referred to as the bottom portion 92 of the bead filler 91) along the outer peripheral surface of the bead core 95 and forming the bead filler 91 in a ring shape on the outer peripheral side of the bead core 95.

[0055] In this embodiment, an example will be described below in which the vertex with the sharpest angle in the cross-sectional shape of the bead filler 91 is located at the top (hereinafter sometimes simply referred to as the top 93 of the bead filler 91) that is the end in the width direction, which is the direction orthogonal to the longitudinal direction of the bead filler 91, and is the farthest from the bead core 95. Further, as shown in FIG. 1, when the bead filler 91 is placed on the inclined surface portion 10 of the mounting table 1, the surface exposed in the bead filler 91 is referred to as the filler surface 91A of the bead filler 91. The filler surface 91A is a surface including the short side portion in the triangular cross-sectional shape of the bead filler 91.

[0056] As shown in FIG. 2, the mounting table 1 is a member having a circular shape in a top view and a trapezoidal shape in a side view as shown in FIGS. 1 and 3, for example, a frustum of a cone shape. The mounting table 1 may be formed of a metal or metal alloy such as stainless steel. The bead filler 91 and the bead core are placed on the mounting table 1.

[0057] As shown in FIGS. 1 to 3, the mounting table 1 has, on the upper surface side, an inclined surface portion 10 that is inclined downward toward the outside in the radial direction of the mounting table 1 and has an annular shape in a top view, and an upper surface portion 11 that is inside the ring of the inclined surface portion 10 and is a surface of the top in the frustum of a cone shape and has a circular shape in a top view. The mounting table 1 is pivotally supported on the base 8 so as to be rotatable in the circumferential direction. The mounting table 1 may be rotationally driven by a motor or the like built in the base 8. In FIGS. 1 and 2, the rotation axis center of the mounting table 1 is shown as the axis center G. In this embodiment, an example in which it rotates counterclockwise in a top view as shown in FIG. 2 will be described.

[0058] As shown in FIG. 1, the inclined surface portion 10 has an annular shape in which the center of the ring coincides with the axis center G in a top view. As shown in FIGS. 2 and 3, the inclined surface portion 10 is inclined downward at a certain angle, for example, toward the outside in the radial direction.

[0059] As shown in FIGS. 1 and 2, the upper surface portion 11 is the surface portion at the top in the shape of a frustum of a cone. Also, the upper surface portion 11 is a circular surface whose center coincides with the axis G in a top view. The upper surface portion 11 is located inside the ring of the inclined surface portion 10 on the mounting table 1. The outer peripheral portion of the upper surface portion 11 and the inner peripheral portion of the inclined surface portion 10 are continuous. The upper surface portion 11 has a bead core support portion 3.

[0060] The bead core support portion 3 is provided on the surface of the upper surface portion 11. The bead core support portion 3 is formed to extend upward in a low cylindrical or columnar shape from a portion slightly inside the outer peripheral portion of the upper surface portion 11, that is, a portion further radially inward than the inner circumference of the ring of the inclined surface portion 10 on the mounting table 1. In the present embodiment, the case where the bead core support portion 3 is a low cylinder is illustrated. The center of the bead core support portion 3 in a top view coincides with the axis G. The bead core support portion 3 supports the inner peripheral surface of the bead core 95 on its outer peripheral surface. In the present embodiment, the bead core 95 is fitted outside the bead core support portion 3, whereby the inner peripheral surface of the bead core 95 is supported by the bead core support portion 3.

[0061] As shown in FIG. 1, the holding piece 5 is used to adhere the bead filler 91 to the bead core 95. The holding piece 5 is a spatula-shaped jig for sandwiching the bead filler 91 between it and the mounting table 1 (an example of a sandwiching step) and attaching the bead filler 91 to the bead core 95.

[0062] The holding piece 5 is driven by, for example, a drive mechanism A so as to be able to approach and separate from the bead core support portion 3 and the inclined surface portion 10. Thereby, the holding piece 5 can approach and separate from the bead filler 91 placed on the inclined surface portion 10. That is, the holding piece 5 is capable of state transition between a state of being separated from the bead filler 91 and a state of sandwiching the bead filler 91 between the holding piece 5 and the mounting table 1. In the present embodiment, the drive mechanism A is configured to move the holding piece 5 in a direction approaching the inclined surface portion 10 and inward in the radial direction of the mounting table 1 so as to bring the holding piece 5 closer to the bead filler 91. The drive mechanism A is preferably fixed relative to the mounting table 1. Thereby, the accuracy of position control of the holding piece 5 is improved. In the present embodiment, the drive mechanism A includes an actuator 82 such as an air cylinder or a hydraulic cylinder, a cylinder shaft 83 that is telescopically driven by the actuator 82 to approach and separate from the bead core support portion 3, and a connecting portion 84 that is connected to the cylinder shaft 83 and the holding piece 5 and transmits the operation of the cylinder shaft 83 to the holding piece 5 to bring the holding piece 5 closer to and separate from the bead filler 91. In the present embodiment, the actuator 82 is fixed to the base portion 8 and thus is fixed relative to the mounting table 1. By fixing the actuator 82 to the base portion 8, the attaching device 100 can be configured to be compact.

[0063] The holding piece 5 includes a plate-shaped main body portion 50 having a first surface portion 50A facing the inclined surface portion 10, a pressing portion 6 and a biasing portion 7 disposed on the first surface portion 50A. Note that, in the present embodiment, the surface portion of one surface of the main body portion 50 that faces the inclined surface portion 10 is the first surface portion 50A.

[0064] FIG. 7 shows a top view of the holding piece 5. FIG. 8 shows a side view of the holding piece 5. FIG. 9 shows a bottom view, that is, the holding piece 5 as viewed from the side of the first surface portion 50A. FIGS. 10 and 11 show a state in which the holding piece 5 sandwiches the bead filler 91 between the holding piece 5 and the mounting table 1 in a side view of the holding piece 5. FIG. 10 shows an intermediate stage in which the holding piece 5 approaches the bead filler 91 and shows a stage in which the holding piece 5 sandwiches the bead filler 91 between the holding piece 5 and the mounting table 1 (hereinafter sometimes referred to as the energized state). FIG. 11 shows a stage in which the holding piece 5 sandwiches the bead filler 91 between the holding piece 5 and the mounting table 1 and holds the bead filler 91 (hereinafter sometimes referred to as the holding state). The energized state and the holding state will be described later.

[0065] As shown in FIG. 7, the main body portion 50 is rectangular in a top view or a bottom view. Also, as shown in FIGS. 7 and 8, the main body portion 50 is plate-shaped. The main body portion 50 is a base that supports the pressing portion 6 and the biasing portion 7 as shown in FIG. 7.

[0066] As shown in FIGS. 1 and 8, the pressing portion 6 is disposed on one end side in the longitudinal direction of the main body portion 50 and on the side closer to the bead core support portion 3 (see FIG. 1) than the biasing portion 7. Hereinafter, the side closer to the bead core support portion 3 in the main body portion 50 will be simply described as the distal end side, and the other end side as viewed from the distal end side in the longitudinal direction of the main body portion 50, that is, the side separated from the bead core support portion 3 will be simply described as the proximal end side.

[0067] As an example, the pressing portion 6 can be formed as a pressing surface 60 that inclines the first surface portion 50A on the distal end side of the main body portion 50 toward the surface side opposite to the first surface portion 50A. That is, the pressing surface 60 is a surface along the filler surface 91A. Thereby, the pressing surface 60 can be brought into surface contact with the surface of the bead filler 91 so as to stably press.

[0068] As shown in Fig. 11, the pressing portion 6 presses the bead filler 91 placed on the inclined surface portion 10 against the bead core 95 fitted outside the cylinder of the bead core support portion 3 (see Fig. 2) and the inclined surface portion 10. That is, the pressing force of the pressing portion 6 includes a force directed toward the bead core 95 and a force directed toward the inclined surface portion 10. The direction in which the pressing portion 6 presses is set to be toward the tip side rather than the direction in which the biasing portion 7 described later biases.

[0069] In the present embodiment, as shown in Fig. 10, the pressing surface 60 is inclined by an angle R1 toward the surface side opposite to the first surface portion 50A. Note that the virtual line L1 shown in Figs. 8 and 10 is a line parallel to the pressing surface 60 and intersecting the axis G (see Fig. 2). The virtual line L2 is a line parallel to the first surface portion 50A and intersecting the axis G. The virtual line L3 shown in Fig. 10 is a line parallel to the filler surface 91A and intersecting the axis G.

[0070] The angle R1 shown in Figs. 8 and 10 is the intersection angle between the virtual line L1 and the virtual line L2, and is an acute angle. The angle R1 is preferably about 5 degrees to 30 degrees. Thereby, the pressing portion 6 can appropriately press the bead filler 91 against the bead core 95 and the inclined surface portion 10.

[0071] Note that, as shown in Figs. 10 and 11, when the main body portion 50 is brought close to the bead filler 91 and the pressing surface 60 is brought into contact with the bead filler 91, it is preferable to maintain a state in which the tip of the first surface portion 50A of the main body portion 50 is positioned below the upper end of the filler surface 91A. Then, the main body portion 50 is preferably linearly slid in the upward direction and in the direction approaching the inclined surface portion 10. Thereby, the pressing portion 6 can more appropriately press the bead filler 91 against the bead core 95 and the inclined surface portion 10. As a result, the adhesion of the bead core 95 to the bead core 95 is ensured.

[0072] As shown in FIGS. 1 and 8, the biasing portion 7 is disposed on the other longitudinal end side of the first surface portion 50A of the main body portion 50, that is, on the side spaced apart from the bead core support portion 3 (see FIG. 1) more than the pressing portion 6. The biasing portion 7 has a plate-like portion 70 disposed along the first surface portion 50A.

[0073] As shown in FIG. 11, the biasing portion 7 biases the base end side portion of the bead filler 91 rather than the portion pressed by the pressing portion 6 in the bead filler 91. Thereby, the biasing portion 7, together with the pressing portion 6, can hold both ends of the bead filler 91 in the direction of approaching and separating from the bead core support portion 3, and can realize stably holding the bead filler 91 on the mounting table 1. In particular, by the biasing portion 7 biasing the base end side portion of the bead filler 91, that is, the portion near the top portion 93, a problem that the end portion on the base end side of the bead filler 91 turns up from the inclined surface portion 10 is avoided, and the bead filler 91 is appropriately held on the inclined surface portion 10.

[0074] The plate-like portion 70 is formed of an elastic member that elastically deforms as an example. As the elastic member, a leaf spring, for example, a plate material of a metal material such as stainless steel may be used within a range not exceeding the yield stress. The biasing portion 7 biases the bead filler 91 placed on the inclined surface portion 10 by the biasing force accompanying the elastic deformation of the plate-like portion 70 to the inclined surface portion 10. The plate-like portion 70 is configured to be biasable along the direction perpendicular to the first surface portion 50A. The biasing portion 7 is preferably biasable in the direction away from the first surface portion 50A. Thereby, in a state where the plate-like portion 70 is supported by the plate-like main body portion 50, the bead filler 91 can be surely biased with respect to the mounting table 1.

[0075] In this embodiment, as shown in FIGS. 10 and 11, when the holding piece 5 sandwiches the bead filler 91 between the mounting table 1, the separation plate portion 71 abuts against the filler surface 91A of the bead filler 91 to urge the bead filler 91 toward the inclined surface portion 10. Hereinafter, abutting against the filler surface 91A of the bead filler 91 will be simply described as abutting against the bead filler 91. Note that the biasing portion 7 biases the bead filler 91 placed on the inclined surface portion 10 toward the inclined surface portion 10 by a biasing force accompanying elastic deformation of the plate-like portion 70 as an elastic member.

[0076] As shown in FIG. 8, the plate-like portion 70 has a supported portion 73 supported by the main body portion 50, a separation plate portion 71 whose plate surface is separated from the first surface portion 50A, a connecting plate portion 72 between the supported portion 73 and the separation plate portion 71, and a bent portion 74 extending from the tip side of the separation plate portion 71. In the plate-like portion 70, the supported portion 73, the connecting plate portion 72, the separation plate portion 71, and the bent portion 74 are arranged in this order from the base end side to the tip side. The supported portion 73, the connecting plate portion 72, the separation plate portion 71, and the bent portion 74 have intersecting surface orientations between adjacent portions. The plate-like portion 70 may be formed by bending a metal such as stainless steel or a metal plate material.

[0077] The supported portion 73 is a base portion for supporting the plate-like portion 70 on the main body portion 50. The plate-like portion 70 is supported by the supported portion 73 on the main body portion 50. The supported portion 73 is located at the end portion on the base end side and is connected and supported to the main body portion 50 by welding or the like.

[0078] As shown in Fig. 10, the spacer plate portion 71 is a plate portion in the biasing portion 7 that abuts against the bead filler 91 and biases the bead filler 91. The spacer plate portion 71 is disposed between a bent portion 74 and a supported portion 73, which will be described later. The spacer plate portion 71 extends from the base end side to the tip end side such that its plate surface approaches the bead filler 91 in a state where the holding piece 5 is separated from the bead filler 91 (see Fig. 1). Further, in a state where the holding piece 5 is separated from the bead filler 91, the spacer plate portion 71 intersects the virtual line L2 as shown in Fig. 8. In a state where the holding piece 5 is separated from the bead filler 91 and when the holding piece 5 abuts against the bead filler 91, the spacer plate portion 71 is preferably approximately parallel to the first surface portion 50A.

[0079] As shown in Figs. 10 and 11, in a state where the holding piece 5 sandwiches the bead filler 91 between the holding piece 5 and the mounting table 1, the spacer plate portion 71 abuts against the bead filler 91 and biases the bead filler 91. In the biasing state shown in Fig. 10, the pressing surface 60 does not abut against the bead filler 91, but the spacer plate portion 71 abuts against the bead filler 91 and biases the bead filler 91. In the holding state shown in Fig. 11, the pressing surface 60 abuts against the bead filler 91 and presses the bead filler 91, and the spacer plate portion 71 abuts against the bead filler 91 and biases the bead filler 91. When the spacer plate portion 71 abuts against the bead filler 91 and biases the bead filler 91, the spacer plate portion 71 may be gently curved so as to bulge toward the inclined surface portion 10. Thereby, the spacer plate portion 71 conforms to the filler surface 91A, the spacer plate portion 71 widely abuts against the filler surface 91A, and the biasing of the bead filler 91 by the spacer plate portion 71 becomes stable. In Fig. 8, the shape of the spacer plate portion 71 when the spacer plate portion 71 abuts against the bead filler 91 and biases the bead filler 91 is illustrated by a two-dot chain line.

[0080] As shown in FIGS. 8 and 10, the separation plate portion 71 has a plate surface that is separated from the first surface portion 50A from the base end side to the tip end side in a state where the holding piece 5 is separated from the bead filler 91. At least a part of the separation plate portion 71 is disposed at a position separated from the first surface portion 50A by more than the pressing surface 60 of the pressing portion 6 in a direction perpendicular to the first surface portion 50A and away from the main body portion 50. In the present embodiment, the entire separation plate portion 71 is separated from the first surface portion 50A by more than the pressing surface 60.

[0081] As shown in FIG. 8, the connecting plate portion 72 is a plate portion extending between the separation plate portion 71 and the supported portion 73. The connecting plate portion 72 has a plate surface that is separated from the first surface portion 50A from the base end side to the tip end side. The connecting plate portion 72 supports the separation plate portion 71 by the supported portion 73.

[0082] The bent portion 74 is a plate portion that extends from the tip end side of the separation plate portion 71 and bends in a direction approaching the first surface portion 50A. In the present embodiment, as shown in FIG. 11, the tip end portion of the bent portion 74 is in contact with the first surface portion 50A in the held state. On the other hand, as shown in FIG. 10, in the biased state, the tip end portion of the bent portion 74 is separated from the first surface portion 50A.

[0083] The angle R2 shown in FIG. 10 is the intersection angle of the virtual line L2 and the virtual line L3, and is an acute angle. The angle R2 is preferably approximately the same as the angle R2, that is, about 5 degrees to 30 degrees. By setting the angle R2 in this way, the biasing portion 7 biases the bead filler 91 against the inclined surface portion 10 more appropriately. Thereby, the bead filler 91 is held more appropriately. More preferably, the angle R2 is set to the same angle as the angle R1. As a result, the virtual line L2 and the virtual line L3 become parallel, and the pressing by the pressing portion 6 and the biasing by the biasing portion 7 are appropriately balanced, so that the bead filler 91 is more securely held on the inclined surface portion 10 and the attachment of the bead filler 91 to the bead core 95 is ensured.

[0084] (Description of Operation and Action) As described above, the pasting device 100 shown in FIG. 1 can realize a sandwiching process in which the bead filler 91 is sandwiched between the mounting table 1 and the holding piece 5. The sandwiching process includes a biasing process, a pressing process, and a moving process. By executing the sandwiching process, the pasting device 100 can paste the appropriate bead filler 91 following the differences in the shape and size of the bead filler 91 without the need for sequential component replacement or adjustment of the holding piece 5 and related components, even if the shape and size of the bead filler 91 vary somewhat.

[0085] As shown in FIG. 11, the biasing process is a process of biasing the bead filler 91 placed on the inclined surface portion 10 by the plate-like portion 70 of the biasing portion 7 against the inclined surface portion 10.

[0086] The pressing process is a process of pressing the bead filler 91 placed on the inclined surface portion 10 against the bead core 95 fitted outside the cylinder of the bead core support portion 3 and the inclined surface portion at a position on the tip side of the position where the biasing portion 7 biases in the biasing process.

[0087] The moving process is a process of moving the holding piece 5 along the direction approaching the inclined surface portion 10 and inward in the radial direction of the mounting table 1. The movement of the holding piece 5 can be performed by the drive mechanism A. In the present embodiment, as the moving process progresses, the biasing process and the pressing process are sequentially started in this order. The state in which only the biasing process is performed is the above-described biasing state. Also, the state in which the biasing process and the pressing process are performed is the above-described holding state.

[0088] In the present embodiment, since the drive mechanism A moves the holding piece 5 in the direction approaching the inclined surface portion 10 and inward in the radial direction of the mounting table 1, in the holding state, the holding piece 5 can be evenly pressed against the bead filler 91. As a result, the bead filler 91 can be stably held on the mounting table 1.

[0089] When executing the sandwiching process, as shown in FIG. 2 etc., the bead core 95 is fitted in advance outside the cylinder of the bead core support portion 3. The sandwiching process is then executed.

[0090] In the clamping step, the bead filler 91 is placed on the inclined surface portion 10 of the mounting table 1, and the bead filler 91 is clamped between the holding piece 5, the mounting table 1, and the bead core 95. Further, the mounting table 1 is rotated in the circumferential direction. As the mounting table 1 rotates, the bead filler 91 is drawn into the circumferential direction of the inclined surface portion 10 by the frictional force with the inclined surface portion 10. Then, while rotating the mounting table 1, the holding piece 5 maintains the state in which the bead filler 91 is clamped between the mounting table 1. Thereby, as the mounting table 1 rotates, the bead filler 91 is wound around the bead core 95 and attached.

[0091] In the clamping step, as shown in FIG. 11, since the biasing portion 7 is disposed on the proximal end side of the pressing portion 6 in the first surface portion 50A of the holding piece 5, the biasing portion 7 is on the side separated from the bead core 95 more than the pressing portion 6, that is, it can abut on the bead filler 91 closer to the top portion 93 of the bead filler 91 than the position pressed by the pressing portion 6. Further, the pressing portion 6 of the holding piece 5 can abut on the bead filler 91 on the side close to the bead core 95 and press it. Therefore, as described above, the bead filler 91 can be stably held on the mounting table 1.

[0092] Now, the moving step is started in a state where the holding piece 5 is separated from the bead filler 91 (see FIG. 1). When the holding piece 5 is brought close to the bead filler 91 and the pressing surface 60 is brought into contact with the bead filler 91 (see FIG. 11), the main body portion 50 is slid upward and in a direction approaching the inclined surface portion 10 while maintaining the state in which the tip of the first surface portion 50A of the main body portion 50 is positioned below the upper end of the filler surface 91A (see FIG. 10).

[0093] Here, as shown in FIGS. 1 and 8, the separation plate portion 71 has its plate surface separated from the first surface portion 50A from the base end side to the tip end side. Further, as shown in FIG. 8, in a state where the holding piece 5 is separated from the bead filler 91, the plate-like portion 70 of the biasing portion 7 intersects the virtual line L1 at the portion of the separation plate portion 71. Further, the separation plate portion 71 is configured such that its plate surface approaches the bead filler 91 from the base end side to the tip end side in a state where the holding piece 5 is separated from the bead filler 91. Therefore, in the holding piece 5, as shown in FIG. 10, in the process of sandwiching the bead filler 91 between the placement table 1, the separation plate portion 71 of the biasing portion 7 contacts the bead filler 91 prior to the pressing portion 6. In other words, when transitioning from a state where the holding piece 5 is separated from the bead filler 91 (see FIG. 1) to a biased state where the holding piece 5 sandwiches the bead filler 91 between the placement table 1 (see FIG. 10), that is, at the start of the biasing process, first, the vicinity of the tip end side end portion of the separation plate portion 71 comes into contact with the bead filler 91 (see FIG. 10). Thereby, the holding piece 5 can hold the bead filler 91 on the inclined surface portion 10. Note that the vicinity of the tip end side end portion of the separation plate portion 71 is the tip end side end portion of the separation plate portion 71 or the base end side end portion of the bent portion 74.

[0094] In the present embodiment, since the bent portion 74 is formed, when the vicinity of the tip end side end portion of the separation plate portion 71 contacts the bead filler 91 at the start of the biasing process, damage such that the tip end of the plate-like portion 70 damages the bead filler 91 is prevented.

[0095] After the separation plate portion 71 contacts the bead filler and the holding piece 5 is further brought closer to the bead filler 91, the plate-like portion 70 elastically deforms so that the whole approaches the first surface portion 50A. The biasing portion 7 of the holding piece 5 biases the bead filler 91 placed on the inclined surface portion 10 against the inclined surface portion 10 by the elastically deformed plate-like portion 70. Thus, in the process of the holding piece 5 approaching and contacting the bead filler 91, the tip end side end portion of the separation plate portion 71 contacts the bead filler 91 at a relatively initial stage and biases it.

[0096] When the biasing portion 7 biases the bead filler 91, the plate-shaped portion 70 biases with the force trying to recover from the elastically deformed state to realize the biasing process. As a result, even when the size and shape of the bead filler 91 are somewhat different, the plate-shaped portion 70 can bias the bead filler 91 while deforming following the changes in the size and shape of the individual bead fillers 91. Consequently, the bead filler 91 is stably held on the inclined surface portion.

[0097] In the process of transitioning from the biasing state to the holding state (see FIG. 11), as the holding piece 5 approaches the bead filler 91, the plate surface of the spaced plate portion 71 comes into contact with the bead filler 91, and it becomes possible to stably bias the bead filler 91. That is, the holding piece 5 can perform temporary fixing to fix the position of the bead filler 91 so that the bead filler 91 does not shift during the process until it sandwiches and holds the bead filler 91.

[0098] Note that if the elastic force of the spaced plate portion 71 is appropriately adjusted, in the holding state, while making the spaced plate portion 71 bend, a wider surface can be made to contact the bead filler 91, and it becomes possible to more stably bias the bead filler 91.

[0099] In the holding state, the pressing portion 6 of the holding piece 5 realizes the pressing process by pressing the bead filler 91 placed on the inclined surface portion 10 against the bead core 95 and the inclined surface portion 10. Thereby, adhesion of the bead filler 91 to the bead core 95 is realized. Note that for adhesion for attachment, either crimping or an adhesive may be used. Since the pressing portion 6 presses the bead filler 91 on the tip side rather than the biasing portion 7, it presses the portion closest to the bead core 95. Therefore, the pressing effect of the pressing portion 6 is less affected by changes in the size and shape of the bead filler 91. That is, the bead filler 91 is stably pressed against the bead core 95.

[0100] The pressing portion 6 may press the filler surface 91A, which is the end portion of the bead filler 91 on the side close to the bead core support portion 3, that is, the upper surface near the bottom portion 92. By doing so, the bead filler 91 is pressed on the bottom portion 29 side of the bead filler 91 where the thickness is the thickest and the shape is least likely to collapse. Thereby, the bead filler 91 can be stably attached to the bead core 95.

[0101] In this way, in the holding state (see FIG. 11), the separation plate portion 71 of the plate-like portion 70 abuts against and biases the bead filler 91. Further, the pressing surface 60 of the pressing portion 6 abuts against and presses the bead filler 91.

[0102] Incidentally, in the holding state, the end portion of the supported portion 73 in the supported portion 73, the connecting plate portion 72, and the separation plate portion 71 may be separated from the mounting table 1. Thereby, regardless of whether the bead filler 91 is placed on the inclined surface portion 10 of the mounting table 1, it is possible to prevent the biasing portion 7 from damaging the mounting table 1, particularly the inclined surface portion 10. The end portion of the supported portion 73 in the separation plate portion 71 refers to the end portion on the proximal end side of the separation plate portion 71. The distance between the end portion on the supported portion 73 side of the separation plate portion 71 and the inclined surface portion 10 is preferably 0.5 mm or more and 1.0 mm or less. With this distance range, while preventing damage to the mounting table 1, the holding of the bead filler 91 by the holding piece 5 can be ensured.

[0103] As described above, the bead filler attaching device and the holding piece realize the method for manufacturing the preset bead, and even if the shape and size of the bead filler are somewhat different, sequential component replacement and adjustment are not required, and appropriate attachment of the bead filler can be realized following this.

[0104] 〔Alternative Embodiment〕 (1) In the above-described embodiment, the biasing portion 7 has the plate-shaped portion 70 as an elastic member that elastically deforms, and the case where the bead filler 91 placed on the inclined surface portion 10 is biased against the inclined surface portion 10 by the biasing force of the plate-shaped portion 70 has been described. However, the biasing portion 7 is not limited to having the plate-shaped portion 70 as an elastic member. As shown in FIGS. 12 to 16, the biasing portion 7 may have a bag body 79 that expands by the supply of a fluid as an elastic member.

[0105] The bag body 79 may be supplied with an incompressible fluid such as water or oil as the fluid, or may be supplied with an incompressible fluid such as air as the fluid. When the bag body 79 is supplied with an incompressible fluid as the fluid, if the bag body 79 is formed of a rubber-like material or the like, the bag body 79 can function as an elastic member in a state where the fluid is supplied. When the bag body 79 is supplied with an incompressible fluid as the fluid, the bag body 79 can function as an elastic member due to the compression and expansion of the fluid. It is a so-called air spring. Hereinafter, the case where the bag body 79 is supplied with air will be exemplified and described.

[0106] As shown in FIGS. 12 and 13, the bag body 79 may be provided on the first surface portion 50A on the base end side with respect to the pressing portion 6. In FIG. 12, the bag body 79 in a state where no air is supplied is drawn with a solid line, and the bag body 79 inflated by the supply of air is drawn with a two-dot chain line. Different from the above-described embodiment, the pressing portion 6 protrudes from the first surface portion 50A by the thickness of the bag body 79 in a state where no air is supplied. The aspect of the pressing surface 60 is the same as that of the above-described embodiment. As shown in FIG. 14, the pressing portion 6 protrudes so that the bag body 79 in a state where no air is supplied does not intersect the virtual line L1.

[0107] As shown in FIGS. 14 and 15, when bringing the holding piece 5 close to the bead filler 91, unlike the above-described embodiment, the bag body 79 as the biasing portion 7 does not have to contact the bead filler prior to the pressing portion 6. The bag body 79 is inflated after the pressing portion 6 contacts the bead filler 91 (see FIG. 15) (see FIG. 16). That is, when using the bag body 79 as the biasing portion 7, the biasing process is started after starting the pressing process. Therefore, in this case, there is no biasing state. As described above, when using the bag body 79 as the biasing portion 7, since there is no biasing state, when the pressing portion 6 presses the bead filler 91 against the bead core 95, the bead filler 91 moves easily on the inclined surface portion 10, and the bead filler 91 may be appropriately positioned with respect to the bead core 95, resulting in a good sticking state.

[0108] As shown in FIG. 12, as an example of a mechanism for supplying air to the bag body 79, the attaching device 100 may include a pump 87 that supplies air to the bag body 79, an actuator 85 for driving the pump 87, and an air pipe 88 that supplies the air sent from the pump 87 to the bag body 79. FIG. 12 shows a case where the pump 87 has a piston 86 that can reciprocate within its internal space and can send out a predetermined amount of air with one reciprocation of the piston 86. The actuator 85 performs a telescopic operation for reciprocating the piston 86.

[0109] (2) In the above-described embodiment, the case where the biasing portion 7 has the plate-like portion 70 as an elastic member that elastically deforms and biases the bead filler 91 placed on the inclined surface portion 10 by the biasing force of the plate-like portion 70 has been described. However, the biasing portion 7 is not limited to the case of having only the plate-like portion 70 as the elastic member. The biasing portion 7 may have, together with the plate-like portion 70, the above-described bag body 79 or another elastic member such as a coil spring (hereinafter referred to as a second elastic member). For example, a second elastic member may be disposed between the plate-like portion 70 and the main body portion 50, and the bead filler 91 may be biased by the elastic force of the plate-like portion 70 and the elastic force of the second elastic member.

[0110] Note that the configurations disclosed in the above embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with the configurations disclosed in other embodiments as long as there is no contradiction. Also, the embodiments disclosed in this specification are examples, and the embodiments of the present invention are not limited to these, and can be appropriately modified within the scope not departing from the object of the present invention.

Industrial Applicability

[0111] The present invention can be applied to a bead filler attaching device, a holding piece, and a method for manufacturing a preset bead.

Explanation of Reference Numerals

[0112] 1 Mounting table 10 Inclined surface portion 100 Attaching device (bead filler attaching device) 11 Upper surface portion 29 Bottom portion 3 Bead core support portion 5 Holding piece 50 Main body portion 50A First surface portion 6 Pressing portion 60 Pressing surface 7 Biasing portion 70 Plate-like portion 71 Spacing plate portion 72 Connecting plate portion 73 Support portion 74 Bending portion 79 Bag body 8 Base portion 82 Actuator 83 Cylinder shaft 84 Connecting portion 85 Actuator 86 Piston 87 Pump 88 Air pipe 9 Preset bead 91 Bead filler 91A Filler surface 92 Bottom portion 93 Top portion 95 Bead core A Drive mechanism Axis G Virtual line L1 Virtual line L2 Virtual line L3 Angle R1 Angle R2

Claims

1. A mounting table for mounting a bead filler, and a holding piece for sandwiching the bead filler between the mounting table, comprising: The mounting table is relatively rotatable with respect to the holding piece, annular in top view, inclined downward toward the radially outer side, and having an inclined surface portion on which the bead filler is mounted, a bead core support portion for supporting the inner peripheral surface of the bead core, having, The holding piece is a pressing portion for sandwiching the bead filler between the inclined surface portion, a biasing portion disposed on a side spaced apart from the bead core support portion rather than the pressing portion, having, The biasing portion has a bag body that expands by supply of fluid, and biases the bead filler placed on the inclined surface portion to the inclined surface portion, The pressing portion is a bead filler attaching device that presses the bead filler placed on the inclined surface portion against the bead core supported by the bead core support portion and the inclined surface portion.

2. The mounting table is circular in top view and rotatable in its circumferential direction, The bead core support portion is cylindrical or columnar extending upward from a portion further radially inward than the inner circumference of the ring of the inclined surface portion, and supports the inner peripheral surface of the bead core on its outer peripheral surface, The holding piece further has a plate-shaped main body portion having a first surface facing the inclined surface portion, The pressing portion is disposed on the first surface, The biasing portion is disposed on the first surface on a side spaced apart from the bead core support portion rather than the pressing portion, The pressing portion presses the bead filler placed on the inclined surface portion against the bead core fitted outside the bead core support portion and the inclined surface portion. The bead filler attaching device according to claim 1.

3. The pressing portion presses the upper surface of the end portion of the bead filler on the side close to the bead core support portion, The biasing portion biases a portion of the bead filler spaced apart from the bead core support portion rather than the portion pressed by the pressing portion. The bead filler attaching device according to claim 1 or 2.

4. The holding piece further has a plate-shaped main body portion having a first surface facing the inclined surface portion, The biasing portion is capable of biasing in a direction away from the first surface. The bead filler attaching device according to any one of claims 1 to 3.

5. The holding piece is capable of approaching and separating from the bead core support portion and the inclined surface portion, The biasing portion has a plate-shaped portion disposed along the first surface portion. The plate-shaped portion is located at an end portion on the side away from the bead core support portion, and has a supported portion supported by the main body portion, and in a state where the holding piece is separated from the bead filler, has a separation plate portion whose plate surface is separated from the first surface portion from the side away from the bead core support portion to the approaching side. The bead filler attaching device according to claim 4, wherein in a state where the holding piece sandwiches the bead filler with the mounting table, the separation plate portion abuts against and biases the bead filler.

6. The plate-shaped portion further has a bent portion bent in a direction approaching the first surface portion, The bead filler attaching device according to claim 5, wherein the separation plate portion is disposed between the bent portion and the supported portion.

7. The bead filler attaching device according to claim 6, wherein in a state where the holding piece is separated from the bead filler, the plate surface of the separation plate portion approaches the bead filler from the side away from the bead core support portion to the approaching side.

8. In a state where the holding piece sandwiches the bead filler with the mounting table, the supported portion and the end portion of the separation plate portion are separated from the mounting table, The bead filler attaching device according to any one of claims 5 to 7, wherein the distance between the end portion on the supported portion side of the separation plate portion and the inclined surface portion is 0.5 mm or more and 1.0 mm or less.

9. The holding piece further has a plate-shaped main body portion having a first surface portion facing the inclined surface portion, The bead filler attaching device according to any one of claims 1 to 8, wherein the pressing portion has a pressing surface inclined toward the surface opposite to the first surface portion from the side away from the bead core support portion to the approaching side.

10. The bead filler attaching device further includes a drive mechanism that moves the holding piece along a direction approaching the inclined surface portion and inward in the radial direction of the inclined surface portion, The bead filler attaching device according to any one of claims 1 to 9, wherein the drive mechanism is fixed relative to the mounting table.

11. A holding piece for adhering a bead filler to a bead core, a rectangular plate-shaped main body portion, a pressing portion disposed at one end side in the longitudinal direction of the main body portion and on a first surface portion which is one surface portion of the main body portion, On the other end side in the longitudinal direction in the main body portion, and an urging portion disposed on the first surface portion, having, The urging portion is capable of urging in a direction along a direction perpendicular to the first surface portion, The direction in which the pressing portion presses is a holding piece that faces the one end side more than the direction in which the urging portion urges.

12. The holding piece according to claim 11, wherein the urging portion is capable of urging in a direction away from the first surface portion.

13. The urging portion has a plate-shaped portion disposed along the first surface portion, The plate-shaped portion, A supported portion that is located at the end portion on the other end side and is supported by the main body portion, From the other end side to the one end side, it has a separation plate portion whose plate surface is separated from the first surface portion, The holding piece according to claim 12, wherein at least a part of the separation plate portion is disposed at a position separated from the first surface portion more than the pressing portion in a direction perpendicular to the first surface portion.

14. The holding piece according to claim 12 or 13, wherein the urging portion has a bag body that expands by supplying fluid.

15. A mounting table for mounting a bead filler, And a holding piece that sandwiches the bead filler between the mounting table, The mounting table, Is rotatable relative to the holding piece, In a top view, it is annular and inclined downward toward the radially outer side, an inclined surface portion on which the bead filler is mounted, A bead core support portion that supports the inner peripheral surface of the bead core, A method for manufacturing a preset bead using a bead filler attaching device having, Including a sandwiching step of sandwiching the bead filler between the mounting table and the holding piece, The sandwiching step, An urging step of urging the bead filler placed on the inclined surface portion against the inclined surface portion, A pressing step of pressing the bead filler placed on the inclined surface portion against the bead core supported by the bead core support portion and the inclined surface portion at a position closer to the bead core support portion than the position where it is urged in the urging step, In the urging step, a method for manufacturing a preset bead in which fluid is supplied to the bag body to expand it, and the bead filler is urged by the expansion of the bag body.

16. The method for manufacturing a preset bead according to claim 15, wherein the sandwiching step further includes a moving step of moving the holding piece along a direction close to the inclined surface portion and an inner direction in the radial direction of the inclined surface portion.

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