Digitally-controlled wire drawing machine and control method thereof

Abstract

The invention relates to the technical field of digitally-controlled wire drawing machines, in particular to a digitally-controlled wire drawing machine and a control method thereof. The digitally-controlled wire drawing machine comprises a middle guide wheel, a steering guide wheel, a tension sensor for a branched guide wheel and a take-up reel speed-measuring device. A capstan, the branched guide wheel and the middle guide wheel are positioned on a first routing plane; the steering guide wheel and a winding guide wheel are positioned on a second routing plane; and the first routing plane is perpendicular to the second routing plane. The reciprocating linear movement of the winding guide wheel is left-to-right movement on the second routing plane, and the winding guide wheel is positioned at the lower left of the steering guide wheel. A rotating shaft of a take-up reel is parallel to the second routing plane. In addition, in the aspect of the control of the take-up tension, the tension detection structure and the control method are changed, so that the digitally-controlled wire drawing machine is more stable, reliable and easier to operate and maintain. A ceramic wave eyelet is removed, so that the wire is not scratched.

Description

Technical field: [0001] The invention relates to the technical field of numerically controlled wire drawing machines, in particular to a numerically controlled wire drawing machine and a control method thereof. Background technique: [0002] Wire drawing machine is the basic equipment of the wire processing industry and is widely used in wire and cable related industries. The existing wire drawing machines can be divided into two categories: single frequency conversion wire drawing machines and double frequency conversion wire drawing machines. [0003] For the structure of single frequency conversion wire drawing machine see figure 1 and figure 2 As shown, the single frequency conversion wire drawing machine includes a wire dividing guide wheel 1, a fixed speed wheel 11, a buffer guide wheel, an elastic swing bar device 19, a cable rod 13, a pigtail ring 14, a cable guide wheel 15, a cable device 17 and Take-up reel 16 etc.; Its take-up tension control method is: detect...

AI Technical Summary

Problems solved by technology

However, there are the following disadvantages in use: 1) The potentiometer for detecting the rotation angle has a high failure rate; 2) When producing wires with different specifications, it is necessary to change the counterweight or cylinder air pressure, which is not conducive to operation and management; 3) The relationship between the rotation angle and the tension There is no linear relationship, accidental results are prone to occur in control, and the reliability of operation is not high enough

The main reasons why the conical take-up reel is not used in the wire drawing machine are: 1. The users after the wire drawing and take-up are generally the next process in the wire production factory, and are not as influential as the external users of the enameled wire; 2. The existing tapered cable technology has a high cost, and the application in the wire drawing machine will excessively increase the cost of the wire drawing machine

[0006] In addition, the direction of wire arranging of the existing wire drawing machine is parallel to the direction of the axis of the wire arranging guide wheel. Constantly changing, the angle between the tangent line of the wire trough is positive and negative, and there is a risk of jumping out of the wire trough

For this reason, usually a pigtail ring 14 is set before the wire rod enters the wire arrangement guide wheel 15, and the wire rod is forced to align with the wire slot without jumping out, but the consequence is that strong friction occurs between the wire rod and the pigtail ring 14, causing the wire rod to be scratched and the pigtail Consequences of rapid wear on circle 14

The wire rods entering the take-up reel 16 are often finished wires, which will directly affect the product quality after being scratched by the pigtail ring 14

There is a technology of moving the take-up reel 16 instead of moving the wire-guiding wheel 15 to arrange the wires, which can effectively solve this problem, but it has not been widely used because of its complicated structure and high cost.

Images