A tread length measuring device and method

Abstract

The invention relates to a tyre surface length measuring device and method. The device comprises a sorting, weighing and conveying roller way, a first range finding sensor, a second range finding sensor, a length measuring roller, a length measurement encoder, a controller and a display, wherein the length measuring roller is mounted on the sorting, weighing and conveying roller way, the length measurement encoder is connected with the length measuring roller, and detects the rolling distance of the length measuring roller, the controller is connected with the length measurement encoder and the display, the first range finding sensor is mounted over the sorting, weighing and conveying roller way, and detects the distance to the tyre surface downwardly, the second range finding sensor is mounted under the sorting, weighing and conveying roller way and detects the distance to the tyre surface upwardly, the horizontal installation distance between the first range finding sensor and the second range finding sensor is L, and L is greater than the maximal length of the tyre surface and lower than the length of the sorting, weighing and conveying roller way. Thus, the length of the tyre surface can be accurately measured, and errors of measurement is reduced.

Description

technical field [0001] The invention relates to the field of tire manufacturing, in particular to a tread length measuring device and method. Background technique [0002] The tread extrusion composite production line is mainly composed of composite extruder, calender lamination, auxiliary line 1, fixed-length cutting, auxiliary line 2, etc. It is the main equipment for tread production. The fixed-length cutting is to cut the continuous tread on the production line according to the set length. In order to check whether the length of each tread meets the process requirements after the fixed-length cutting, it needs to be measured. [0003] The principle of the existing length measuring device is to use the length measuring encoder to calculate the length by detecting the starting point and end point of the movement of the object. The long device includes a sorting scale conveyor belt, one side of the sorting scale conveyor belt is respectively provided with sensor one and se...

AI Technical Summary

Problems solved by technology

[0005] 1. The tread extruded by the compound extruder has a certain shape. After being cut by a cutter at a certain angle during the fixed-length cutting, the shape of the incision is irregular, and because the bottom of the tread is pasted with plastic paper, Its width is larger than the width of the tread, which is easy to cause detection errors;

[0006] 2. In the auxiliary line, the speeds of the quick separation roller table, the water blowing roller table, the sorting conveyor and the pick-up roller table are all different, and the tread will slip when passing the above roller table, resulting in inaccurate detection;

[0007] 3. The position of the tread in the roller table will shift due to the action of the cutter, which will cause detection errors

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