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Retreaded tyre vulcanization die

A technology for retreading tires and vulcanizing molds, which is applied in the field of rubber machinery. It can solve the problems of unreasonable heating form and cavity design, and achieve the effects of reducing radiation heat transfer, heating up quickly, and avoiding heat conduction.

Inactive Publication Date: 2009-08-26
钟爱民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to change the overall heating form and unreasonable cavity design of the current tire retreading mold, and provide a new type of energy-saving retreading tire vulcanization mold

Method used

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  • Retreaded tyre vulcanization die

Examples

Experimental program
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Effect test

Embodiment Construction

[0026] Embodiment, as shown in the figure, the 11.00R20 retreaded tire vulcanization mold is divided into an upper mold and a lower mold, and the mold shell 1 is made of a steel plate with a thickness greater than 12mm, which can constrain the mold liner and bear the pressure of the vulcanized tire together with the liner. Several reinforcing ribs are welded on the shell, and the outside is wrapped with an insulating layer. The shell 1 of the upper die is also welded with several locking bolt seats and the jacking cylinder frame for opening the upper die, etc., and the bottom surface of the shell 1 of the lower die is provided with a mold support and a locking bolt frame corresponding to the upper die.

[0027] The crown liner 2 and the sidewall toe liner 4 made of aluminum alloy are fastened on the casing 1, and there is a heat insulation gap 3 between the crown liner 2 and the sidewall toe liner 4, and the insulation The thermal gap 3 has a width of 2 mm and is filled with h...

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PUM

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Abstract

The invention relates to a die used for retreading tyre, comprising a skin, a die lining board and an electric heating component. The die is characterized in that the lining board of the retreaded tyre vulcanization die is heated divisionally; four heating units composed of electric heating components respectively heat the lining boards on treads of tyre and lining boards at sidewall toe opening of the upper and lower dies and can control temperature and time respectively. The technical problem to be solved in the invention is to change the integral heating manner and irrational design of die cavity of the prior retreaded tyre die and provide a novel and energy-saving retreaded tyre vulcanization die.

Description

technical field [0001] The invention relates to a mold for tire retreading, which belongs to the technical field of rubber machinery. Background technique [0002] At present, the molds used for tire retreading are all split up and down. Whether it is patterned or non-patterned, the molds heated by steam, thermal oil or electric heating are all heated as a whole. The current popular tire retreading methods are mostly for crown retreading, also known as top retreading. During vulcanization, only the tire crown part needs to be heated. The overall heated mold not only wastes heat energy, but also easily causes damage to the carcass, and affects Service life of vulcanized inner tubes. All-steel radial tires are popularized rapidly. In the near future, bias tires will be eliminated for road transport vehicles and replaced by radial tires. Most of the tire retreading molds used now are used for retreading bias tires. The cavity size design Unreasonable and non-standard, it is e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/08B29C35/02B29C35/12B29L30/00
CPCB29D30/0662B29D2030/0674
Inventor 钟爱民
Owner 钟爱民
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