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Automatic bead assembly device

An automatic assembly device and bead technology, which is applied to tires, other household appliances, household appliances, etc., can solve problems such as poor bonding, poor bonding, and poor quality, and achieve the effect of suppressing poor bonding

Active Publication Date: 2017-03-01
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] When the bead apex G is wound spirally around the molding machine 42, the winding start end (front end surface) and winding end portion (rear end surface) of the bead apex G to be wound are shifted, so E.g image 3 As shown in (A), there is a joint failure between the front end surface and the rear end surface of the bead apex G, or, for example, image 3 As shown in (B), there is a gap between the bead core C and the bead apex G, resulting in poor adhesion.
[0010] In addition, tires manufactured using such beads with defective joints and poor adhesion may result in poor quality

Method used

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  • Automatic bead assembly device
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Examples

Experimental program
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Effect test

Embodiment

[0042] 1. Examples and Comparative Examples

[0043] An automatic bead assembly device using a bead forming machine formed of a blade portion having a tapered portion with an angle α shown in Table 1 on the outer peripheral surface, consisting of a bead core of 22.5-63S / 1, and a hard layer and a filling layer bead apex to form the bead.

[0044] The assembly operation of each bead automatic assembly device is repeated for one day to evaluate the occurrence of defective products.

[0045] Specifically, the processing conditions of the bead obtained, such as poor bonding at the joint between the front end surface and the rear end surface of the bead apex, and poor adhesion between the bead core and the bead apex at the joint, were evaluated. commented.

[0046] The results are shown in Table 1. In addition, in Table 1, "◎" indicates that the incidence of defective products is less than 1%, "○" indicates that the incidence of defective products is more than 1% and less than 3%, ...

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PUM

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Abstract

The invention provides a tire bead automatic assembly device which, in the production of a tire bead, can inhibit poor joint of tire bead filler and poor adhesion between a tire bead core and the tire bead filler. After the tire bead filler is wound on the periphery of a forming machine formed by making multiple blade parts be disposed annularly side by side, the blade parts are made to stand up, and thus the tire tread filler and the tire tread core are joined to form a tire tread. In the tire tread automatic assembly device, conical parts are disposed on a surface of peripheral sides of the multiple blade parts in a manner that the conical parts are made to stand up toward an outer side from a tire tread core side. In the tire tread automatic assembly side, an angle of each conical part (alpha) satisfies 0 DEG<alpha<=15 DEG. The tire tread assembly device is a device for forming tire treads of tires for trucks and cars.

Description

technical field [0001] The present invention relates to an automatic bead fitting device for forming a bead by automatically fitting and joining a bead apex and a bead core of a tire. Background technique [0002] When assembling a raw tire, an automatic bead assembly device is used to automatically assemble and join the bead apex with a slender triangular cross-section and the bead core with a polygonal (usually hexagonal) cross-section. This shaped bead (for example, Patent Document 1). [0003] figure 2 The main part of a conventional typical automatic bead assembly device is schematically shown in . Such as figure 2 As shown, the automatic bead assembly device 41 includes a molding machine 42 for winding the bead apex G into a cylindrical shape. [0004] The molding machine 42 is configured by arranging a plurality of blade portions 48 in an annular arrangement around the central axis L of rotation. Each blade portion 48 is configured to stand up by rotating about a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/18B29D30/32
Inventor 安宅郁夫
Owner SUMITOMO RUBBER IND LTD