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   In industrial equipment, electronic control system is closely related to wire harness. Someone once made a vivid analogy: a microcomputer is equivalent to a human brain, a sensor is equivalent to a sensory organ, and an executive component is equivalent to a motor organ. Then the wire harness is a nerve and blood vessel. Industrial wire harness can be divided into two types by function: the power line carrying the power of driving executive assembly (actuator) and the signal line transmitting the input command of sensor. Power line is a thick wire that carries large current, while signal line is a thin wire that does not carry power (optical fiber communication). In addition to considering the electrical performance, the selection of wires is also restricted by the physical performance of the equipment during operation. For example, the frequent start / stop system operation of industrial equipment and the wires across the equipment should be composed of wires with good flexibility. In recent years, the use of electromagnetic shielding wire in weak signal circuit is also increasing. With the improvement of products, the increasing demand for equipment functions and the widespread application of electronic control technology, the number of circuits and power consumption on the equipment increase significantly, and the wiring harness becomes thicker and heavier. How to make a large number of wiring harness more effectively and reasonably arranged in the limited internal space of the equipment, so that the industrial wiring harness can play a greater role, has become a problem faced by the industrial equipment manufacturing industry.