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Method and device for measuring length of lay for steel cord

A technology for measuring devices and steel cords, applied in measuring devices, instruments, etc., can solve the problems of inconvenient manual operation, inaccurate lay length, and easy to generate errors, so as to avoid the increase of untwisting rotation number and the untwisting rotation number Precise, precision-enhancing effects

Active Publication Date: 2009-12-09
JIANGSU XINGDA STEEL TYPE CORD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The twist length measured by this method is not accurate, and errors are prone to occur. The repeated test data often fluctuates, which cannot meet the tire factory's performance parameter requirements for steel cords, and manual operation is inconvenient.

Method used

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  • Method and device for measuring length of lay for steel cord
  • Method and device for measuring length of lay for steel cord
  • Method and device for measuring length of lay for steel cord

Examples

Experimental program
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Embodiment Construction

[0012] according to figure 1 As shown, the steel cord twist length measuring device of the present invention mainly consists of a motor controller 1, a motor 6, a rotating holder 2, a fixed holder 3, a guide rod 10, a support 14, a base 15 and a weight 16 composition. The support 17 on the right side of the base 15 is provided with a motor controller 1, a motor 6 and a rotary holder 2; Holder 3, weight 16 is hung on the left end of guide rod 10, fixed holder 3 and rotating holder 2 are arranged on the same horizontal line; the left side of base 15 is provided with guide wheel 4, and weight 16 is bypassed by the sling Guide wheel 4, the weight of weight 16 is generally less than 40N.

[0013] according to image 3 As shown, the motor 6 is fixed on the bracket 17, the motor output shaft 7 is connected with the flange 5 through the transmission of the key (such as a flat key or spline) and the keyway, and the flange 5 and the rotating holder 2 are fixed by countersunk screws. ...

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Abstract

This invention discloses one steel cord pitch measurement method and its device, which comprises the following steps: putting the two ends of the cord into the clamper for tightening; exerting the tension force one end with its force less than 40N; then rotating the other end to the reverse pitch of the cord till the steel pitch all loose and recording the rotation number n; measuring the clamper distance d; computing the steel cord pitch according to the formula L=d / n.

Description

technical field [0001] The invention relates to a method and a device for measuring the twist length of steel cords. Background technique [0002] Steel cord is used as a reinforcing material for tires, and its lay length is an important parameter. If the lay length is large, the production efficiency is high, but the fatigue resistance performance is reduced; if the lay length is small, the fatigue resistance performance is improved, and the elongation is increased, but the twisting loss of strength is large, and the production efficiency is also reduced, so the lay length measurement is the steel cord production an essential part of the process. The traditional method of measuring the lay length of steel cord is to use manual measurement. The finished steel cord is cut to a fixed length, placed on a piece of white paper, and the twist trace of the steel cord is traced with a pencil or copy paper. Every ten lay lengths is one Group, take the average value to get the lay l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/00
Inventor 王金和李江
Owner JIANGSU XINGDA STEEL TYPE CORD