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Tire curing mold, tire manufacturing method, and pneumatic tire

A tire vulcanization mold and tire technology, applied in the direction of pneumatic tires, tire parts, tires, etc., can solve the problems of partial wear, uniformity deterioration, etc., and achieve the effect of reducing poor rigidity, reducing rigidity, and reducing the number of parts

Active Publication Date: 2021-07-27
TOYO TIRE & RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the difference in rigidity due to TWI may cause local uniformity to deteriorate, which may cause partial wear

Method used

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  • Tire curing mold, tire manufacturing method, and pneumatic tire
  • Tire curing mold, tire manufacturing method, and pneumatic tire
  • Tire curing mold, tire manufacturing method, and pneumatic tire

Examples

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Effect test

Embodiment Construction

[0029] Embodiments of the present invention will be described with reference to the drawings.

[0030] figure 1 A cross section of the tire vulcanizing mold 10 taken along the tire meridian is shown, and the tire vulcanizing mold 10 is in a closed state. The tire T is installed with the tire width direction facing up and down. exist figure 1 In the figure, the left direction is outside in the tire radial direction, and the right direction is inside in the tire radial direction. figure 2 Zoom in figure 1 The main part of the equivalent along the image 3 A-A to view the section. exist figure 2 , image 3 Herein, the upper direction is the outer side in the tire radial direction, and the lower direction is the inner side in the tire radial direction.

[0031] Such as Figure 1~3 As shown, the tire vulcanization mold 10 has: a tread molding surface 1 which is in contact with the tread of a tire T provided in a cavity 15; a protrusion; and a groove 3 for tread wear ind...

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PUM

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Abstract

Technical Problem: To provide a tire vulcanization mold, a tire manufacturing method, and a pneumatic tire that reduce poor rigidity due to tread wear marks and can suppress partial wear. Solution: The tire vulcanization mold of the present invention has: tread molding surface (1), and it contacts with the tread of the tire that is arranged on mold cavity (15); (1) protruding inward in the tire radial direction; a groove (3) for forming a tread wear mark, which is provided in such a manner that the top surface of the bone (2) is recessed; and a plate-shaped protrusion (6) for forming a groove ), which protrudes from the bottom surface of the groove (3) inwardly in the tire radial direction.

Description

technical field [0001] The present invention relates to a tire vulcanization mold having grooves for forming tread wear marks, a tire manufacturing method using the tire vulcanization mold, and a pneumatic tire provided with tread wear marks in tread grooves. Background technique [0002] The tire vulcanization mold has a tread molding surface that is in contact with the tread of the tire. Concavo-convex shapes for forming a tread pattern are provided on the tread molding surface. The concavo-convex shape includes bone portions for groove formation protruding inward in the tire radial direction from the tread forming surface. A tread wear indicator (hereinafter sometimes referred to as "TWI") indicating a wear-based usage limit is sometimes provided in the groove formed by the bone part. The TWI is formed by a groove provided so as to dent the top surface of the bone (for example, refer to Patent Document 1). [0003] Since the TWI is raised from the bottom of the groove,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C35/02B29C33/42B29D30/06B60C5/00
Inventor 田中正也
Owner TOYO TIRE & RUBBER CO LTD
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