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Method and apparatus of manufacturing annular concentric stranded bead cord

A technology of stranded strands and beads, applied in the field of bead cords, can solve the problems of unstable rotation of the annular core 1, disturbance of the arrangement of side wires, etc., and achieve the effect of good formability and good winding performance

Inactive Publication Date: 2008-06-18
SUMITOMO (SEI) STEEL WIRE CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the entire device becomes larger, the rotation of the annular core 1 in the circumferential direction becomes unstable, and the arrangement of the side wires will be disturbed

Method used

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  • Method and apparatus of manufacturing annular concentric stranded bead cord
  • Method and apparatus of manufacturing annular concentric stranded bead cord
  • Method and apparatus of manufacturing annular concentric stranded bead cord

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Embodiment Construction

[0053] An apparatus for manufacturing an annular concentric stranded bead cord according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 8 .

[0054] The manufacturing apparatus includes a drive unit 10 and a supply unit 20 . The drive unit 10 rotates the annular core 1 in the circumferential direction at a fixed position. The supply unit 20 supplies the side wire 2 wound on the drum 21 to the winding portion of the annular core 1 .

[0055] The drive unit 10 includes two pinch rollers 12a and 12b connected to a drive motor for rotating the annular core 1 in a circumferential direction in a vertical plane. Pinch rollers 12 a and 12 b are provided on the pillar 11 of the table 14 .

[0056] The clamping unit 13 surrounding the annular core 1 is provided on the support 11 so as to be arranged on the supply side of the side wire 2 in the direction opposite to the rotation direction of the annular core 1 . The clamping unit 13 incl...

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PUM

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Abstract

A method of manufacturing an annular concentric stranded bead cord, wherein, while rotating an annular core at a fixed position in a peripheral direction, a reel, upon which a lateral wire is wound, repeatedly performs a pendulum swinging movement and a perpendicular movement with respect to the annular core, thereby spirally winding the lateral wire upon the annular core to form a sheath layer. When forming the sheath layer, a fulcrum of the pendulum swinging movement of the reel is determined so that, with reference to a tangential line of a circle of the annular core passing through a winding point where the lateral wire is wound upon the annular core, the lateral wire is wound upon the winding point of the annular core within 15 degrees at a position above the tangential line and within a range of 55 degrees at a position below the tangential line.

Description

technical field [0001] The present invention relates to a bead cord embedded in a bead portion of a pneumatic tire. More specifically, the present invention relates to a method and apparatus for manufacturing an annular concentric stranded bead cord having a sheath or a sheath formed by continuously helically winding side wires around an annular core. Multiple layers. Background technique [0002] Toroidal concentric strand bead cords are used in various types of vehicles. [0003] As shown in FIGS. 9A and 9B , the annular concentric stranded bead cord includes a sheath of side wires 2 provided on an annular core 1 . The above-mentioned ring is manufactured by continuously helically winding the side wire 2 along the ring core 1 by passing the side wire 2 from the outside of the ring core 1 to the inside of the turns of the ring core 1 and then passing the side wire 2 from the outside of the turn to the inside of the turn. Concentric stranded bead cord. [0004] The follo...

Claims

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Application Information

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IPC IPC(8): B29D30/48B21F37/00
Inventor 佐野裕一若原仁志冈本贤一
Owner SUMITOMO (SEI) STEEL WIRE CORP
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