Molding element comprising a particular assembly means

Patent metadata

Field	Value
Publication number	US-11090888-B2
Application number	US-201816768438-A
Country	US
Kind code	B2
Filing date	Nov 27, 2018
Priority date	Nov 30, 2017
Publication date	Aug 17, 2021
Grant date	Aug 17, 2021

Abstract

A set ( 1 ) of moulding elements intended to be added to a mould comprise a main moulding element ( 10 ) and a secondary moulding element ( 20 ) comprising an edge ( 21 ), said main moulding element ( 10 ) comprising a contact zone ( 11 ) adapted to be in contact with all or part of the edge ( 21 ) of the secondary element, said contact zone ( 11 ) not being flat, and the edge ( 21 ) of said secondary moulding element ( 20 ) comprising at least one recessed portion ( 22 ) complementary to the non-flat contact zone ( 11 ) of the main element.

First claim

The invention claimed is:

1. A set of molding elements intended to be added to a mold for vulcanizing a tire tread, the set comprising a main molding element and a secondary molding element,
wherein the secondary molding element comprises an edge, the main molding element comprises on at least one contact face, a contact zone configured to be in contact with all or part of the edge of the secondary molding element, the contact zone is not flat, and the edge of the secondary molding element comprises a double cut having a profile complementary to a profile of a double undulation of the main molding element thereby matching a profile of the contact face of the main molding element.

2. The set according to claim 1 , wherein the set further comprises assembly means for assembling the secondary molding element to the main molding element.

3. The set according to claim 2 , wherein the assembly means comprise a notch in the main molding element for receiving part of the edge of the secondary molding element.

4. The set according to claim 2 , wherein the assembly means comprise at least one protrusion protruding from the edge of the secondary molding element.

5. The set according to claim 1 , wherein the main and secondary molding elements are blades.

6. A mold for vulcanizing a tire tread comprising a plurality of sets of molding elements according to claim 1 .

Assignees

• Michelin & Cie

Inventors

• Chigros Pierre
• Bardin Damien

Classifications

• B29D30/0606 Primary

  Vulcanising moulds not integral with vulcanising presses (for solid tyres B29D30/02) · CPC title

• B60C11/12

  characterised by the use of narrow slits or incisions, e.g. sipes · CPC title

• B29D2030/0613

  Means, e.g. sipes or blade-like elements, for forming narrow recesses in the tyres, e.g. cuts or incisions for winter tyres · CPC title

• B29D2030/0612

  Means for forming recesses or protrusions in the tyres, e.g. grooves or ribs, to create the tread or sidewalls patterns · CPC title

• B29C33/302

  Assembling a large number of mould elements to constitute one cavity · CPC title