The single wires appear at a certain distance along the direction of the strands, and the certain distance is the pitch of the strands (referred to as strand pitch for short). Another definition of torsion distance is the vertical distance that the torsion line body rotates every 360 degrees along the torsion axis, in mm, pitch in English.
A bundle of wires is twisted together by a number of single wires. Generally speaking, the single wire of the bundle is many and thin, which increases the flexibility of the wire and cable and improves the reliability of the line connection. In order to improve flexibility and reliability, some wire and cable conductors are stranded.
In order to bundle or twist the single wire with a certain helix angle (or pitch), the equipment meets the following requirements. One is to make all single wires rotate around the central axis of the device. Another is to make the twisted product perform linear motion. By changing the combination of these two movements, the size of the helix rising angle can be adjusted, so that the produced stranded wire and bundled wire meet the structural requirements.
The pipe stranding machine is composed of main parts such as pay-off, traction, pay-off and coiling, drag and transmission system, and control system. In addition, a trimmer, a side-by-side type (also called a stamper), a meter, and other devices are also included.
The stranded wire produced by the pipe stranding machine has a relatively large specification. When making a stranded wire, except for a single wire in the center, the remaining single wire discharge discs are placed in the discharge part (such as a twist cage). Through its rotation, the single wire forms a stranded wire around the central single wire. layer. According to the number of twists of the stranded wire and the number of single wires of each layer, the general twisting machine is equipped with multiple (several) rotating drawing parts, and each layer can make different stranded wires, so it is especially suitable for concentric layers of twisted wires. Production. The wire harness produced by the pipe stranding machine is small in size, and the wire harness is formed by the rotation of the basket frame and the rotating body of the wire take-up part. Since the action of the pipe stranding machine is all in the wire take-up part, the pipe stranding mechanism is installed on the rotating gondola, and its position is limited. Therefore, although the yarn winding machine can only produce products with small specifications in the twisting direction, the number of bundled single yarns can be flexibly configured as required.
