Claims
- 1. A tire tread mould comprising a lower molding part and an upper molding part defining respectively the outer surface and the inner surface of a tread, at least one of the parts being movable between two positions corresponding to the opening and closure of the mould, wherein the upper molding part has elements for hooking a longitudinal end of the tread.
- 2. The mould of claim 1, wherein the hooking elements protrude relative to a surface of the upper molding part.
- 3. The mould of claim 1, wherein the hooking elements are formed by at least one hook.
- 4. The mould of claim 3, wherein the hook extends transversely over at least part of the width of the upper molding part.
- 5. The mould of claim 3, wherein the protruding elements comprise several hooks spaced in the transverse direction.
- 6. The mould of claim 3, wherein the hook has a free end oriented longitudinally towards the outside of the mould.
- 7. The mould of claim 3, wherein the hook has a pointed free end.
- 8. The mould of claim 6, wherein the hook has an inclined surface opposite its free end to facilitate the retraction of said hook.
- 9. The mould of claim 1, wherein the lower molding part has at least one raised transverse edge which cooperates with the hooking elements of the upper molding part.
- 10. The mould of claim 1, wherein the lower molding part has protruding elements to cooperate with the elements of the upper molding part.
- 11. The mould of claim 10, wherein the protruding elements of the lower molding part are formed at least by a hook having a free end oriented longitudinally towards the inside of the mould.
- 12. The mould of claim 10, wherein the protruding elements of the lower part of the mould comprise a molding surface for a leading edge on the tread to facilitate unhooking from the hooking elements of the upper molding part.
- 13. A molding and vulcanization apparatus for tire treads comprising a mould of claim 1, which comprises progressive demolding means for the tread.
- 14. The apparatus of claim 13, wherein the progressive demolding means are formed by the end of a plate which can be translated on the lower molding part in the longitudinal direction.
- 15. The apparatus of claim 14, wherein the end of the plate comprises at least one roller extending in the transverse direction, mounted freely in rotation.
- 16. The apparatus of claim 14, wherein the end of the plate is in the form of a shovel.
- 17. The apparatus of claim 14, wherein the plate comprises rollers extending in the transverse direction of support of the tread, said rollers being free in rotation.
- 18. The apparatus of claim 14, wherein the plate is mounted to be translatable relative to the lower molding part by means of rollers extending in the transverse direction which are mounted freely in rotation which cooperate with the longitudinal edges of said lower molding part.
Priority Claims (1)
Number |
Date |
Country |
Kind |
01/10569 |
Aug 2001 |
FR |
|
Parent Case Info
[0001] This is a continuation of International Application PCT/EP02/08759, which was published in French on Feb. 20, 2003, as International Publication WO03/013819 and which claims priority of French Application No. 01/10569, filed Aug. 7, 2001.
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/EP02/08759 |
Feb 2003 |
US |
Child |
10773469 |
Feb 2004 |
US |