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Device and method for producing a breaker ply

A technology of a buffer layer and a conveying device, which is applied to tires, household appliances, other household appliances, etc., can solve the problems that the tire product is prone to resonance, the weight distribution of the tire product is uneven, and the weight distribution is uneven.

Active Publication Date: 2006-03-01
VMI HOLLAND BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is the uneven weight distribution around the finished tire that may be formed
And this uneven weight distribution is periodic, which makes the finished tire prone to resonance

Method used

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  • Device and method for producing a breaker ply
  • Device and method for producing a breaker ply
  • Device and method for producing a breaker ply

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0080] In Fig. 1, a device 1 for manufacturing a buffer layer is shown, which comprises two devices positioned in parallel for manufacturing buffer layers 2, 2'. Each device for manufacturing the cushioning layer 2, 2' comprises an unrolling device 3, 3' provided with reels on which the strands are provided. Typically, these strands are steel cords.

[0081] For each device for making cushioning layers, the above-mentioned device 1 further comprises extrusion means for extruding unvulcanized rubber around the above-mentioned strands 4, 4' and cooling devices 5, 5', where buffers are also provided Circulation to cool the extruded material. Interruptions in the machining process are also prevented here. When a continuous strip of rubber is provided with longitudinal wires, it is difficult to stretch or otherwise deform the strip.

[0082] Subsequently, the continuous strip of synthetic rubber with embedded longitudinal cords 6, 6' is fed onto the cutting device 7, 7' by means...

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PUM

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Abstract

The invention relates to a method for manufacturing a breaker ply having a longitudinal axis, a breaker ply ( 12 ) length and mutually parallel cords at a pre-set cord angle to the longitudinal axis (A), wherein a continuous rubber strip ( 6 ) is provided with substantially parallel longitudinal cords; a set strip width and set centre-to-centre distance between the longitudinal cords one to the other, is produced in the longitudinal direction by means of a continuous extrusion process, the continuous rubber strip is cut into bands at the cord angle, a predetermined number of bands having cords substantially parallel to each other at a set band distance with respect to each other forming a breaker ply having a ( 12 ) pre-set breaker ply length are placed on a support surface ( 10 ), wherein the mutual distance of the bands is calculated in order to realise a set length of the breaker ply, when the breaker ply has reached the target breaker ply length, the breaker ply is transported in the longitudinal direction to a building drum ( 15 ) and is wound onto the building drum, as well as a device for it.

Description

technical field [0001] The present invention relates to an apparatus and method for manufacturing a breaker or belt having a longitudinal axis, breaker length and cords parallel to each other at a preset cord angle relative to the longitudinal axis. Background technique [0002] The process for making breakers for automobile tires will be described below. First, a wide strip is made of unvulcanized rubber, with the cords arranged in the longitudinal direction. The strips are roughly 800-1600 mm wide and are cut to the cords at an angle, the cord angle, so as to form parallelogram-shaped strips containing cord portions. In so-called splicing machines, the belts are spliced ​​together by splitting the sides, the aforementioned cord portions being parallel to each other (splicing) into one long strip. With respect to the longitudinal direction of the strip, the strip has diagonal cord portions at cord corners. The strips are then rolled onto rolls and stored until use. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D30/42B29D30/70
CPCB29D30/1657B29D30/3057B29D30/42B29D30/70B29D2030/082B29D2030/381B29L2030/003
Inventor H·古特克内希特
Owner VMI HOLLAND BV