Tire direct-pressure shaping and electromagnetic induction heating curing method and apparatus
US9827725B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 28, 2017 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Jun 28, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D2030/0677
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A tire direct-pressure shaping and electromagnetic induction heating curing method uses an inner metal mold including large and small segments, a telescoping mechanism, supporting plates attached to the segments, and induction heating coils. A cavity in the middle of the segments is filled of phase change material. The temperature of the mold rises rapidly by the thermal effect of an eddy current generated on the surface of the segments to heat the green tire. When the middle part of the segment is heated to a certain temperature, the phase change material absorbs and stores the excess heat. Therefore, the temperature of the middle part of the segment differs from one of two ends of the segment. Once the tire is cured, the inner mold in the expanded condition and the outer mold support very high pressure for the green tire together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.