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Metal mold for vulcanizing tire treads

A tire tread and mold technology, applied to tires, household appliances, and other household appliances, can solve problems such as time required and achieve the effect of preventing misinstallation

Inactive Publication Date: 2008-12-03
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the divided pieces of the mold for tread molding need to be regularly arranged adjacent to the divided pieces with different pattern pitches. Note that it takes time

Method used

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  • Metal mold for vulcanizing tire treads
  • Metal mold for vulcanizing tire treads
  • Metal mold for vulcanizing tire treads

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0017] An embodiment of the present invention will be described below with reference to the drawings.

[0018] FIG. 1 is a schematic perspective view showing a tire tread vulcanizing mold according to an embodiment of the present invention together with a pair of side vulcanizing molds. Reference numeral 1 denotes the tire tread vulcanizing mold according to the present invention, and 2 denotes a pair of side vulcanizing molds. Add sulfur mold.

[0019] Here, the tire tread vulcanizing mold 1 is composed of a plurality of (eight are shown in the figure) sector molds 3 capable of expanding and contracting horizontally in the radial direction, and these sector molds 3 are separated by adjacent sector molds 3 . The postures that are in close contact with each other and whose diameter is reduced form a ring shape as a whole. In the figure, they are used together with a pair of upper and lower side vulcanization molds 2 to vulcanize a green tire to form the tread portion of a finis...

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PUM

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Abstract

A metal mold for vulcanizing tire treads reliably preventing incorrect assembling of split pieces. The metal mold 1 for vulcanizing tire treads to form a tread of a tire, comprises a plurality of sector molds 3 equipped with a plurality of pieces 6 which are arranged on the inner circumferential surface of a casing 5 and are split in the circumferential direction in which a tread pattern of the tire is formed, wherein among the adjacent pieces 6 in the sector molds 3, a protuberance 8 is formed on the contact surface of the one piece 6, a dent 9 corresponding to the protuberance 8 is formed in the contact surface of the another piece 6, and the positions for forming the protuberance 8 and the dent 9 are differed for each of the adjacent pieces 6 in the sector molds 3.

Description

technical field [0001] The present invention relates to a vulcanizing mold for vulcanizing and molding green tires, in particular to a tire tread vulcanizing mold which is composed of a plurality of sector molds and molds the tread portion of a product tire. A tire tread vulcanization mold for misloading of multiple pieces for forming the tread pattern on the body. Background technique [0002] As a mold for tire vulcanization, there is conventionally known a mold that is split in the circumferential direction. In such a mold, in order to discharge gas such as air trapped between the mold and the raw tire into the mold during the tire vulcanization process On the outside of the die, there are a number of small holes for exhaust called vent holes that communicate with the inside and outside of the mold. However, the vent holes described above require a step of forming a plurality of vent holes in a mold, and burrs (spue) may be cut and remain in the vent holes. [0003] For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C35/02B29K21/00B29L30/00
CPCB29D30/0629
Inventor 兵头昌树
Owner TOYO TIRE & RUBBER CO LTD
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