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Winding method and winding device for bead filler for tire

一种胎圈三角胶、三角胶芯的技术，应用在轮胎零部件、运输和包装、胎等方向，能够解决三角胶芯质量下降、接合不良、带状橡胶接合强度不足等问题

Active Publication Date: 2016-11-09
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this state, even if the two ends of the strip-shaped rubber cut to a predetermined length are joined, a gap is generated between the two ends of the strip-shaped rubber, or the bonding strength between the two ends of the strip-shaped rubber is insufficient.
Therefore, poor bonding may occur, resulting in a decrease in the quality of the apex

Method used

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  • Winding method and winding device for bead filler for tire
  • Winding method and winding device for bead filler for tire
  • Winding method and winding device for bead filler for tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] One embodiment of a winding method and winding device for a tire bead apex rubber will be described below.

[0025] Such as figure 1 As shown, the strip-shaped rubber 100 is extruded from an extruder not shown and cut to a predetermined length. Such as figure 2 As shown, the strip-shaped rubber 100 is wound, and both ends of the strip-shaped rubber 100 are joined, thereby forming an annular apex 101 . Such as image 3 As shown, the strip rubber 100 and the apex 101 have flat triangular cross-sections. Here, the thick portion of the strip-shaped rubber 100 is defined as a base, and the thin portion is defined as a top.

[0026] Next, a winding device for winding the strip-shaped rubber 100 to form the apex 101 will be described.

[0027] Such as Figure 4 ~ Figure 10 As shown, the forming drum 21 can rotate around the horizontal drum shaft 22, and is driven by a driving motor not shown. Figure 4 ~ Figure 10 counterclockwise rotation. On the outer peripheral su...

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PUM

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Abstract

Belt-shaped rubber (100) is conveyed to a forming drum. Then, the belt-shaped rubber (100) is cut to a predetermined length by a cutter. When the tail end of the belt-shaped rubber (100) which is being conveyed is detected by a sensor, suckers (31) which convey the belt-shaped rubber (100) while sucking the belt-shaped rubber stop temporarily or the moving speed of the suckers (31) decreases. As a result, the apex of the belt-shaped rubber (100) is stretched in the length direction of the belt-shaped rubber (100). Accordingly, the amount of shrinkage of the belt-shaped rubber (100) after extrusion is compensated for, and thus the shrinkage of the belt-shaped rubber (100) is suppressed.

Description

technical field [0001] The present invention relates to a winding method and a winding device of a bead apex (hereinafter simply referred to as an apex) embedded in a bead portion of a pneumatic tire. Background technique [0002] A band-shaped rubber with a triangular cross-section extruded from an extruder and cut to a predetermined length is wound, and both ends of the band-shaped rubber are joined to form a ring-shaped bead apex (for example, Patent Document 1). [0003] prior art literature [0004] patent documents [0005] Patent Document 1: JP-A-2002-361757 [0006] The strip-shaped rubber extruded from the extruder shrinks due to temperature drop over time. In this case, the thinner the portion where the temperature tends to drop, the greater the shrinkage of the strip-shaped rubber. Therefore, when the strip-shaped rubber has a triangular cross-section and the thickness in the width direction is not constant, the thinner portions at the ends in the width di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/44B29D30/48
CPCB29D30/48B29D30/3007B29D2030/4425B29D2030/482B29D30/44B60C15/06
Inventor 野村诚明濑古章
Owner THE YOKOHAMA RUBBER CO LTD