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Multilayer strand cord twisting process and core wire straightener

A process and cord technology, which is applied to auxiliary devices for rope making, textiles and papermaking, textile cables, etc., can solve the problems of unbalanced stress of inner and outer layers of cords, affecting the performance and life of tires, and uneven film. To achieve the effect of being conducive to promotion and implementation, easy to control and adjust, and easy to use

Active Publication Date: 2013-11-13
HENAN HENGXING SCIENCE & TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are many problems in the twisting process of multi-layer cords in some twisting equipment, mainly manifested in the unbalanced stress of the inner and outer strands of the cord, and the residual torsion of the core strands after stripping the core is relatively large. The film is uneven and the edge is easy to warp, which will affect the tire production process and also affect the performance and life of the tire

Method used

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  • Multilayer strand cord twisting process and core wire straightener
  • Multilayer strand cord twisting process and core wire straightener
  • Multilayer strand cord twisting process and core wire straightener

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment one: see figure 1 , figure 2 , image 3 , this embodiment is a core wire straightener for multi-layer cord twisting, number 1 in the figure is a bracket, 2a, 2b are respectively a horizontally adjustable rolling mechanism and a vertically adjustable rolling mechanism, 3a, 3b are respectively are horizontal fixed pulley and vertical fixed pulley, 4a and 4b are horizontal movable pulley and vertical movable pulley respectively, 5a and 5b are horizontal and vertical adjustment mechanisms respectively, 6a and 6b are horizontal and vertical adjustment knobs respectively, 7a and 7b are respectively 8a and 8b are horizontal and vertical slots respectively, 9a and 9b are internal adjustment screws respectively, 10a and 10b are auxiliary horizontal and auxiliary vertical adjustable rolling mechanisms respectively, 11a, 11b are the fixed pulleys of the horizontal and vertical auxiliary adjustable rolling mechanism, 12a, 12b are the movable pulleys of the horizontal...

Embodiment 2

[0033] Embodiment 2: The drawings are not drawn, and the content is basically the same as that of Embodiment 1, and the similarities will not be repeated. The difference is that the horizontally adjustable rolling mechanism and the vertically adjustable rolling mechanism respectively include a base, and the base can be Translate and fix horizontally and vertically on the bracket, and the horizontal strip-shaped holes and vertical strip-shaped holes are respectively arranged on the corresponding bases.

Embodiment 3

[0034] Embodiment 3: The accompanying drawings are not drawn, and the content is basically the same as that of Embodiment 1, and the similarities will not be repeated. The difference is that the adjusting mechanism is a worm gear, a worm gear matching mechanism or a bevel gear matching mechanism, specifically, on the bracket , and the bottom are fixed and positioned separately to form a sandwich structure. The slide is located in the sandwich mechanism. A worm that can rotate and drag its movement is installed on the slide. A turbine is installed on the positioning plate of the sandwich and directly or on the turbine shaft. Indirect knob or lever.

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Abstract

The invention relates to a multilayer strand cord twisting process and a core wire straightener. The process comprises three steps of core strand twisting, outer layer strand twisting and external winding, wherein the pitch in core strand twisting is controlled to be 11.1-12.3mm; the straightener is additionally arranged between core strand twisting and outer layer strand twisting, and comprises a bracket and an inlet end guide wheel; a transverse adjustable rolling mechanism and a vertical adjustable rolling mechanism are simultaneously arranged on the bracket; a core strand sequentially penetrates through each pulley block of the transverse adjustable rolling mechanism and the vertical adjustable rolling mechanism of the straightener; and during outer layer strand twisting, the ratio of the core strand rotating speed to a top wire rotating speed is controlled to be any value of (0.91:1)-(0.93:1), and the over-twist speed ratio in twisting is controlled to be 97%-99%. The invention can eliminate residual stress of the core wire, so that the inner layer stress and the outer layer stress of the cord are in balance more easily, the finished product of the cord after aging is more stable in twisting, residual twisting of the cord is easier to control and adjust in the production process, the overall stress is smaller when the cord is used in a tire factory, and the cord can not generate edge lifting and unevenness easily.

Description

technical field [0001] The invention relates to a multi-layer cord twisting technology, in particular to a multi-layer cord twisting process. Background technique [0002] At present, there are many problems in the twisting process of multi-layer cords in some twisting equipment, mainly manifested in the unbalanced stress of the inner and outer strands of the cord, and the residual torsion of the core strands after stripping the core is relatively large. The film is uneven and the edge is easy to warp, which will affect the tire production process and also affect the performance and life of the tire. Contents of the invention [0003] The invention overcomes the shortcomings of the existing equipment and technology and provides a multi-layer cord twisting process. [0004] Technical solution: A core wire straightener for multi-layer cord twisting, installed at the wire inlet position between the core strand twisting and outer layer strand twisting processes, including the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/48D02G3/26
CPCD07B7/027D07B2201/2007D07B2207/4072
Inventor 左玉冰周志刚陈志杰
Owner HENAN HENGXING SCIENCE & TECHNOLOGY CO LTD
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