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Vulcanizing mould with enhanced sealing

A mold and molding technology, used in household appliances, other household appliances, tires, etc., can solve the problems of expensive mold manufacturing and complicated mold manufacturing, and achieve the effect of avoiding molding overflow, simple solution, and eliminating sealing problems.

Active Publication Date: 2018-08-03
OCIETE DE TECH MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the ring segments have to be manufactured individually, assembled and then fastened to each sector, thereby complicating the manufacture of the moulds.
In addition, this solution requires a large number of additional parts, including ring sections and fastening parts, thus making the mold expensive to manufacture

Method used

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  • Vulcanizing mould with enhanced sealing
  • Vulcanizing mould with enhanced sealing
  • Vulcanizing mould with enhanced sealing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Figure 1a A partial view of a section in a meridian plane through a sector mold 1 for tires known from the prior art is shown. The mold 1 comprises a set of sectors 2 forming a ring of sectors, and two shells 3 , one being a lower shell and the other being an upper shell. Each sector 2 in the ring constituted by the sectors comprises a radially inner face 2' with a molded lining 2". The mold 1 also has a band 4 for holding the sector when the mold 1 is closed. Zone 2 stays together.

[0032] Figure 1b Yes Figure 1a A section on the axis AA' shown in , which shows the first closed configuration of the mold 1, in which the closure first takes place by contact between the adjacent sectors 2, and in the ring formed by the sectors 2 and the housing 3, more specifically there is a clearance J at the interlocking circle.

[0033] Figure 1c the same is Figure 1a Section on the axis AA' shown in , which shows the second closed configuration of the mold 1, where the clos...

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PUM

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Abstract

The invention relates to a tyre mould (10) comprising two shells (30) each intended to mould one sidewall of the tyre, a ring of segments (20) intended to mould a tread of the tyre, each segment (20)of the ring of segments comprising a radially inner face (21) comprising a mould lining (22), characterized in that the mould (10) comprises microstructures (50) arranged in such a way as to fill thegap that remains between two mould linings (22) of adjacent segments (20) and / or between a mould lining (22) of a segment (20) and a shell (30) when the mould is closed.

Description

technical field [0001] The invention relates to the field of molds for tyres, in particular of the sectored type. Background technique [0002] A sector mold generally has two lateral shells for molding the sidewalls of the tire, and several peripheral sectors arranged between the shells for molding the tread of the tire. The tread is more precisely molded from the liner that includes the tire pattern. These molded liners are attached and fastened to the inner face of each sector or integrally formed. [0003] During vulcanization, with the green green body of the future tire being firmly pressed and held against the mould, said green body is subjected to certain pressure and temperature conditions which cause the raw rubber compound to become fluid. Therefore, a very good sealing of the mold is necessary to avoid flash on the tire during curing. [0004] However, in practice, the vulcanization mold is difficult to achieve closure on sector molds known from the prior art ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/06B29C43/38B29C33/00
CPCB29C33/0038B29C43/38B29D30/0629B29D2030/0616
Inventor E·布朗切特T·莱斯屈尔
Owner OCIETE DE TECH MICHELIN