Fabric spreading speed control device and method for fabric spreading machine

Abstract

The invention relates to the technical field of a numerical control machine tool, and discloses a fabric spreading speed control device and method for a fabric spreading machine. The fabric spreading machine comprises a fabric conveying mechanism and a fabric spreading table. The fabric spreading speed control method for the fabric spreading machine comprises the following steps: the fabric conveying mechanism conveys to-be-spread fabric to the fabric spreading table through a fabric pressing mechanism, wherein the position of the fabric pressing mechanism is changed with change of the fabric conveying speed of the fabric conveying mechanism; when the fabric conveying speed exceeds a preset range, a position sensing mechanism senses the position of the fabric pressing mechanism and outputs the position to a controller; the controller acquires the fabric conveying speed according to the received data, and adjusts the fabric conveying speed of the fabric conveying mechanism to be within the preset range. Compared with the prior art, the fabric conveying speed of the fabric conveying mechanism is detected in real time and is adjusted according to a detection result, a to-be-spread material can be spread to an accurate preset length, the cutting accuracy is improved, the defective rate is reduced, materials are saved, and loss is reduced.

Description

technical field [0001] The invention relates to the technical field of numerical control machine tools, in particular to a spreading speed control device and method for a spreading machine. Background technique [0002] At present, in the leather and cloth cutting industry, it is often necessary to cut the material according to the production needs. Before cutting the cloth, leather and other materials, the cloth or leather must first be laid on the cloth spreading table with a spreading machine. The spreading machine includes a spreading table, a cloth feeding roller and a controller of the roller. Cloth (or leather) is wound layer by layer on the roller. The roller rotates at a preset speed under the control of the controller, so that the cloth Put it down at the corresponding linear speed, and at the same time, the spreading table should also move toward the preset direction at the above linear speed, so that the fabric (or leather) can be laid on the spreading table accu...

AI Technical Summary

Problems solved by technology

[0003] However, in fact, during the laying process, the radius of the cloth (or leather) winding on the drum becomes smaller and smaller, and the line speed of the cloth laying at the same speed will gradually decrease with time. If it does not match, the position and length of the cloth laying will be inaccurate

In this way, the position of the material to be cut (that is, the laid cloth or leather) that is sent to the cutting table is often not accurate enough, which has a great impact on the quality of cutting, resulting in an increase in the rate of defective products and waste of materials, especially when the material to be cut is processed. When cutting in batches, the cutting quality of the entire batch of materials will be affected, which will lead to a sharp increase in the defective rate and cause unforeseen losses

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