Method of manufacturing tire ply material

A manufacturing method and technology for tire cords, which are used in tires, applications, household appliances, etc., can solve the problems of not easy to high-quality tire cord material c, and it is difficult to fully ensure joint strength, etc. Effect

Inactive Publication Date: 2012-05-23
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in this technical solution, since the ends of the narrow-width strip d are joined together in abutting manner, it is difficult to secure sufficient joint strength.
Therefore, there is a problem that when the tire cord material c is cut fr

Method used

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  • Method of manufacturing tire ply material
  • Method of manufacturing tire ply material
  • Method of manufacturing tire ply material

Examples

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Example Embodiment

[0037] Next, embodiments of the present invention will be described in detail. figure 1 , 2 It is a front view and a side view which show an example of the manufacturing apparatus 2 which implements the manufacturing method of the tire carcass 1 of this invention.

[0038] exist figure 1 , 2 Among them, the manufacturing device 2 includes: a drum 3; a winding unit 8, which continuously winds the cord array body 5 and the rubber belt 6 in a spiral shape on the drum 3 to form the cord array body 5 in the radial direction. A cylindrical cord-containing winding body 7 whose inner and outer surfaces are covered by the rubber belt 6 (in Figure 4 , 5 shown in); cutting unit 9, which cuts the cord-containing winding body 7 to form tire cord material 1 (in Image 6 shown in ).

[0039] In this embodiment, the tire cord material 1 is a cord material 1 for forming a belt cord, Figure 7 A case where the tire cords 5A are arranged at a predetermined angle θ of, for example, 10 t...

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Abstract

The invention provides a method of manufacturing tire ply material. The method includes a winding process of winding a cord array and a rubber band onto a drum in a spiral manner to form a cyliner comprising a cord winding body. The drum moves toward the axial back side of the drum at a certain speed. The width (Wg) of the rubber band is made to be two times larger than an axial moving distance (L) when the drum rotates one time, so that the half width portion of the rubber band on the axial back side of the drum is overlapped on an overlapping portion of the rubber band on the axial front side of the drum, wherein the rubber band is wound at the previous rotation. The cord array is disposed beteween the back half width portion and the front half width portion of the rubber band of the overlapped portion, such that the internal surface and the external surface of the cord array on a radius manner are wrapped by the rubber band. According to the invention, the high-quality tire play material is effectively formed.

Description

technical field [0001] The present invention relates to a method for producing a tire cord material capable of efficiently forming a high-quality cord material, such as a belt cord, in which cords are arranged at a predetermined angle with respect to the longitudinal direction of the cord material. Background technique [0002] like Figure 10 As shown, in the past, tire cords such as belt cords are formed from a wide belt-shaped body b as a raw material. made. Specifically, on the one hand, the belt-shaped body b is cut at a predetermined angle θ (usually 10 to 40° in belt plies) and a predetermined length Lo with respect to the longitudinal direction, and on the other hand, each cut belt b1 is The non-cut side edges are sequentially connected to form a tire carcass c in which tire cords are arranged at the angle θ with respect to the longitudinal direction of the carcass. [0003] Once the elongated tire carcass c is wound around the roller body, it is cut into a predete...

Claims

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Application Information

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IPC IPC(8): B29D30/38B29D30/46
CPCB29D30/38B29D30/44B29L2030/003
Inventor 宫崎真一
Owner SUMITOMO RUBBER IND LTD
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