Know anything about wiring harnesses?

1、Is 3M a monopoly supplier of wire harness tape? A: No, 3M does not have a monopoly in the wire harness tape market, its price is 3-4 times of the LOCAL supplier. Harness tape selection rules are mainly based on its noise reduction and wear-resistant grade, choose the most advantageous price. 2, the meaning of the wire in the wire type? A: The first is the temperature resistance level; the second is the thickness of the insulating skin; the third A or B is just the structure of the conductor, is the structure of the guide body inside the symmetrical and asymmetrical; the fourth refers to the surface plating, D indicates copper plating. 3, the core technology of the terminals, what exactly is it? A: The core technology of the terminal is mainly through the laser cutting metal sheet to form different patterns, and domestic suppliers can only copy this structure, but it is not clear why it is so designed. 4, the whole car terminals divided into regions? For example, which part of the region is more complex and expensive? A: Not divided. It is the structure of the terminal that determines the cost. 5. Is there any mechanized method to wrap the tape? A: Yes, automatic tape-wrapping machine. But it is more suitable for single, long wire harness. For complex, multi-variable wire harnesses, it is still mainly by manual winding. 6, is there any process method that can save the working hours of tape winding? A: Yes, there is a small automatic tape cutter, or a serrated tape tearing machine, or a pneumatic stripping machine. One of the automatic tape-wrapping machine, due to more nodes of the wire harness, can not be used on a wide scale, only the demand for a large number of harnesses have the opportunity to use automatic tape-wrapping machine, complex can not be used, automatic tape-wrapping machine cost is expected to be within a few tens of thousands of dollars; in addition to a small tape-cutting equipment, you can automatically cut the tape of a certain length, to avoid manual operation, improve the efficiency of the; 7, the production process of wire harnesses, the purpose of the fixed plate? A: The production of wire harness is carried out in the fixed plate, the fixed plate will be in accordance with the drawings of each node on the connecting wire, connectors and other spare parts labeling, the production of connectors and connecting wires into the connectors and so on, and then tape the connecting wires and other tape wrapping on the board for the amount of small & simple harnesses, the board is fixed; if a large amount of large & complex harnesses using rotating plates, and each employee only do a process, that is, usually If large & complex wiring harnesses use rotary boards, and each employee only does one process, that is, the usual assembly line operation, which largely improves the production efficiency of the wiring harnesses. 8, is the generality of the wiring harnesses high? A: On different OEM, different models, because of different functions, different vehicle layout, there is almost no common. 9, what are the terminal plating layer? Under what circumstances will be plated with silver, under what circumstances will be plated with gold? A: Mainly copper plating, gold plating, nickel plating. Gold-plated conductivity is better, 4G network and other network lines, airbag line as a lifeline, requiring higher transmission speeds, more use of gold-plated terminals. In the terminal pricing process, the general use of terminal pricing as a whole, rather than in accordance with the plating thickness of the pricing of 10, baking shrinkage process can be introduced? A: In the case of heating will shrink, generally in the hot oven heating, hot melt adhesive will overflow, play a waterproof protective role, more companies are using infrared + crawler heating method, high production efficiency, uniform heating. Oven has been a backward baking shrinkage process. 11, new electric vehicles, and even smart car wiring harness, compared to the traditional car what are the changes? How will the cost change? A: The cost of Tesla wiring harness is lower than that of traditional car companies, within 100 meters. Tesla mainly replaces the wiring harness by chips or circuit boards, and may keep reducing the use of wiring harness in the future. The future trend is that the transmission efficiency is getting higher and higher, and the cost is getting more and more economical.12. Can the wiring harness of the whole car be automated? A: too many changes in the harness, the function of the change, is the need to change the harness to achieve the function, the harness is basically changing every day, resulting in automated production can not be implemented, and automation of the investment is relatively high, the generality of the case is not high, not economic. 13, what is the general composition of the cost of the harness situation? A: Roughly cost share: about 70% of the material, about 7% of the labor, equipment depreciation and management fees about 8%, 15% of the profit. Material costs in the special wire accounted for a relatively large.

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