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Tire mold and method for manufacturing tire mold

A technology for tire molds and tires, which is applied to tires, household appliances, and other household appliances. It can solve the problems of difficult deformation of tread segments and the inability to correct tread segments, etc., and achieve the effect of reducing deformation.

Active Publication Date: 2019-07-16
BRIDGESTONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this regard, in the conventional metal mold, the tread segment cannot be corrected, and it is difficult to reduce the deformation of the tread segment

Method used

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  • Tire mold and method for manufacturing tire mold
  • Tire mold and method for manufacturing tire mold
  • Tire mold and method for manufacturing tire mold

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Embodiment Construction

[0021] An embodiment of the tire mold and tire mold manufacturing method of the present invention will be described with reference to the drawings.

[0022] The tire mold of the present embodiment is a mold for tire molding, and is manufactured by the tire mold manufacturing method of the present embodiment. The tire mold is set in the tire vulcanizing device, which is used to shape unvulcanized tires.

[0023] figure 1 It is a cross-sectional view showing the tire vulcanizing device 1 of the present embodiment, and showing the tire vulcanizing device 1 and the tire 2 cut along the width direction of the tire 2 (tire width direction W).

[0024] As shown in the figure, the tire 2 is an unvulcanized tire and has a tread portion 2A, a pair of bead portions 2B, and a pair of sidewall portions 2C. The tread portion 2A is a portion including the outer peripheral surface of the tire 2 and is formed in a ring shape along the circumferential direction of the tire 2 (tire circumferential di...

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Abstract

The present invention facilitates correction of a molding mold of a tire mold and reduces distortion of the molding mold. A holder (40) holds a molding mold (30) on a mounting surface (44) on which the molding mold (30) is mounted. A plurality of bolts (5) are attached to the holder (40) once the molding mold (30) is pulled toward the holder (40), and correct distortion of the molding mold (30). The molding mold (30) has a contact surface (35) that comes into contact with the mounting surface (44), projection rows (37) comprising a plurality of projections (36) that are arranged with interposed gaps in the tire circumferential direction, and threaded holes (38) formed in the projections (36). The holder (40) has recessed parts (45) that accommodate the projections (36) of the molding mold(30), and insertion holes (46) into which threaded parts (5A) of the bolts (5) are inserted, said insertion holes (46) being formed in the bottom surfaces of the recessed parts (45).

Description

Technical field [0001] The present invention relates to a tire mold for forming a tire and a method for manufacturing a tire mold using a layered molding to form a tire mold. Background technique [0002] In the manufacture of tires, unvulcanized tires (green tires) are vulcanized using a tire vulcanizing device to manufacture tires. At this time, the tire vulcanizing device stores the tire in a tire mold and molds the tire using the tire mold. In addition, as a tire mold, a metal mold provided with a plurality of tread segments divided in the tire circumferential direction has been known in the past (see Patent Document 1). [0003] In the conventional metal mold described in Patent Document 1, a plurality of tread segments are forming molds for forming the tread pattern of the tire, and are arranged annularly around the tire. However, depending on the thickness of the tread segment, the formation method of the tread segment, etc., there is a possibility that the tread segment i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/02B29C35/02B29L30/00
CPCB29D30/0606B29D30/0629B29D2030/0607B29D2030/0617B29C33/02B29C35/02
Inventor 前田敏之
Owner BRIDGESTONE CORP
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