Twisting machine system solution

Infinite speed regulation, consistent wire arrangement, higher precision, energy-saving and consumption reduction

A stranding machine is a device that twists several metal wires into a strand with a specific pitch and direction. The product, steel wire rope, is widely used in various industries and fields such as tires, metallurgy, shipping, elevators, cable cars, mining, marine, bridges, military, and aerospace.

Industry background

Stranding is the process of arranging rope strands in a helical pattern around the rope core to produce steel wire rope. A stranding machine typically consists of main components such as a transmission device, twisting body, wire pressing device, traction device, safety and parking device, and take-up and laying device. It twists multiple metal wires into strands with a specific pitch and direction. Based on structure, it can be classified into skip-type, tubular, and bow-type stranders (double-twist, jump rope-type stranders). The products, steel wire ropes, are widely used in industries and fields such as tires, metallurgy, shipping, elevators, cable cars, mining, marine, bridges, military, and aerospace.

System principle

A double twist machine is primarily used for producing small gauge line contact steel wire strands and steel cord. Unlike tubular machines, this type of equipment does not have a cylinder, resulting in a smaller rotational inertia and increased operating speeds, typically reaching up to 5000~6000 r/min. It mainly consists of the following components: flywheel pay-off section, synchronous twisting unit, synchronous traction unit, tension balance arm, take-up, and traverse. The machine twists multiple fine wires into a single strand according to the set speed and twist pitch, and finally collects the strand onto a specific spool according to the predetermined length.

System topology

Program advantage

Support online modification of speed and twist pitch parameters

Allows twisting of any strand pitch without changing mechanical structure, achieving stepless speed regulation.

Supports manual/automatic adjustment of false twist speed

In automatic mode, the ATC device enables automatic speed adjustment of the false twister, and supports extension for multiple false twister shafts.

Take-up uses closed-loop PID constant tension control

Utilizes analog balance arm feedback for PID control, ensuring the balance arm remains stable in the middle position to achieve constant tension winding.

Automatic traverse speed adjustment

Traverse can automatically adjust based on the speed of the take-up motor to ensure consistency

Features a comprehensive alarm system

Includes broken wire detection, balance arm alarm, driver alarm, length alarm, supporting real-time and historical alarm records.

Adopts more stable EtherCAT bus solution

With shorter scan cycles, higher response, and guaranteed precision, the "one network" connection reduces wiring and labor costs.

Supports the expansion of information products

With XINJE information products, easily implement remote monitoring of equipment status, supporting mobile and computer monitoring, and customizable displays and functions per user requirements.

Features a shared bus power outage solution to prevent wire breakage

The shared bus solution ensures stable equipment shutdown during unexpected power outages, preventing wire tangling or breaking, effectively reducing production losses and saving energy.