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Method for manufacturing pneumatic tire with spray-painted mark and spray-painting machine

A technology of pneumatic tires and tires, which is applied in the field of manufacturing pneumatic tires, and can solve the problems of unsightly appearance of tires

Inactive Publication Date: 2012-03-07
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This also results in an unattractive appearance of the tire

Method used

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  • Method for manufacturing pneumatic tire with spray-painted mark and spray-painting machine
  • Method for manufacturing pneumatic tire with spray-painted mark and spray-painting machine
  • Method for manufacturing pneumatic tire with spray-painted mark and spray-painting machine

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Experimental program
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Effect test

Embodiment Construction

[0021] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0022] According to the present invention, in order to manufacture a pneumatic tire, a green tire 1R is vulcanized in a vulcanization mold, and then identification marks CL are provided on the tread surface 2 of the vulcanized tire 1a by using a spraying device.

[0023] The identification mark can be a large number of dots representing at least one character, a dashed or broken line, at least one continuous line, etc., arranged individually or in combination. In this embodiment, the identifying markings are two consecutive colored lines CL, where the combination of the two colors represents the tread rubber compound.

[0024] An example of a green tire 1R is shown in Figure 14 . As for the method of manufacturing the green tire 1R, various methods can be used, but in this embodiment, a so-called belt winding method is incorporated in order to manufactu...

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Abstract

A spray-painting machine for a pneumatic tire comprises: a tire holder comprising a pair of bead support disks between which the tire is held; at least one spray gun; a spray gun shifter to move the spray gun to a position near the tread face of the tire held by the tire holder; a rotator for the bead support disks to rotate the tire around the rotational axis of the tire; and a controller whichcontrols the spray gun to spray the paint onto the tread face during the tire is rotated. In a method of manufacturing a pneumatic tire, after the raw tire is vulcanized, an identification mark is spray-painted on the tread face of the vulcanized tire.

Description

technical field [0001] The present invention relates to a method of manufacturing a pneumatic tire, and more particularly to a method and apparatus for spraying markings on the tread surface of a pneumatic tire. Background technique [0002] Traditionally, the surface of an extruded strip of raw tread rubber or tread rubber compound is provided with characters and / or lines for identification of the compound, cross-sectional shape, size, etc., as disclosed in Japanese patent application JP-P2002- 36692A. This document reveals that the lines have heretofore been applied by jetting ink, which is described in the document Figure 6 shown in . [0003] Generally, pneumatic tires are provided with various information on sidewalls by means of molding. However, this information can be difficult to read if the tires are stacked or placed closely side by side. Therefore, it is very useful for tire dealers, automobile manufacturers and especially tire manufacturers to provide tire i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/06B05D5/00B05B13/00B05B13/02B05B12/00B41J3/407
CPCB05D1/002B05B13/0228B29D30/0633B05B7/1263B05B13/0442B29D2030/728
Inventor 鑓水和明鬼松博幸三木洋二郎
Owner SUMITOMO RUBBER IND LTD