Green tire forming apparatus
US5310328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1992 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Jul 29, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29D30/24
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A green tire forming apparatus has a driving section (2) and a forming section (1) supported by a shaft extended from the driving section (2). A center former section (10) of the forming section (1) has a pair of first former elements (11A), (11B) and a pair of second former elements (12A), (12B) arranged at the outside of the first former elements so as to be movable in an axial direction. The total width of the center former section can be shortened to about one fourth of the maximum. According to the apparatus, during green carcass formation, the width of the center former section (10) can be set as the required one, and during toroidal shaping, the width can be shortened to about one fourth of the maximum, whereby a distance (BW.sub.3) between beads can be made close to that of a metal mold. As a result, generation of wrinkles during tire formation is largely decreased and tire quality can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.