Automatic envelope leak detection during tire curing

A technology for tires and cured films, applied in tires, household appliances, other household appliances, etc., can solve problems such as the inability to reduce manifold pressure

Active Publication Date: 2013-02-13
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Restrictor 140 cannot relieve manifold greater pressure due to restricted flow and release of pressure through restrictor 140

Method used

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  • Automatic envelope leak detection during tire curing
  • Automatic envelope leak detection during tire curing
  • Automatic envelope leak detection during tire curing

Examples

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Embodiment Construction

[0018] Certain embodiments of the present invention provide methods and apparatus for curing retreaded tires, including methods and apparatus for detecting fluid leakage in a tire-membrane assembly during a curing operation of a retreaded tire. Curing operations include preparations that take place prior to initiating the curing process, which involves increasing the heat and pressure within the curing chamber to cure the tread to the tire carcass.

[0019]Particular embodiments of such methods may include the step of placing a plurality of tire-membrane assemblies within a tire curing chamber of a tire curing system, each tire-membrane assembly comprising a retreaded tire and a flexible curing membrane surrounding the At least a portion of the retreaded tire is mounted to form a sealed fluid chamber between the membrane and the tire. Before the curing process begins, a plurality of retreaded tires are loaded into the curing chamber of the curing system for curing. A flexible...

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Abstract

The present invention includes methods and apparatus for curing retread tires, which includes detecting and controlling a leak in a tire-membrane assembly during such curing operations. The steps of the method include placing a plurality of tire-membrane assemblies within a tire curing chamber; connecting a membrane fluid passage to each curing membrane of each tire-membrane assembly where each passage extends in fluid communication between one of the curing membranes and a pressure source and / or a vacuum source, each membrane fluid passage including a transducer for measuring pressure within the passage and a flow restrictor, in particular embodiments; initiating a curing process; receiving a one or more signal responses from each transducer generated as a function of the fluid pressure within the membrane fluid passages; and determining through a controller whether the signal responses received in the prior step indicate an undesired change in pressure in each curing membrane.

Description

technical field [0001] The present invention generally relates to methods and apparatus for curing retreaded tires. More particularly, the present invention relates to such methods and apparatus for curing retreaded tires, including methods and apparatus for detecting and controlling leaks in tire-membrane assemblies during the curing operation of retreaded tires. Background technique [0002] Retreaded tires consist of new tread attached to a previously existing tire carcass. The carcass is prepared to receive the new tread by removing the previous tread, for example by a grinding operation. The new tread is then applied to the tire carcass and cured to secure the new tread to the carcass. A method of curing a retreaded tire includes placing the retreaded tire at least partially within a flexible curing membrane to create a sealed fluid chamber between the curing membrane and the tire. The combination of a retreaded tire and an installed curing membrane is referred to he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/52
CPCB29D2030/0666B29D30/0061B29D30/542B29D2030/0675B29D2030/546
Inventor R·扬S·曼努埃尔N·克里斯多佛
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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