In daily life, the common terminal connecting wires inside the equipment often encounter such phenomena as end pressure falling off, PVC shrinking due to heating, and the tension after end pressure not reaching the standard, which lead to abnormal use of the client. So how to prevent bad phenomena in the processing of terminal connecting wires, and analyze the common problems of terminal connecting wires

The following problems often occur in the processing of terminal connecting wires:

1、 PVC shrinks when heated

In the tin dipping process of terminal connecting wire, if the tin dipping temperature is too high and the tin dipping time is too long, PVC will shrink when heated. The tin dipping material will generally choose Sn99.5-Cu0.5 tin copper, which requires the furnace temperature to reach the melting point of 220-227 ℃. The melting point is high and the mechanical properties are slightly inferior, but the manufacturing cost is low. Therefore, to solve the PVC shrink when heated, you can choose a temperature resistant PVC sheath or control the tin dipping time not to be too long

Terminal connecting wire

2、 The tension after crimping is not up to standard

The conductor and terminal will generate tension after crimping. The main factors affecting the tension are the pressing height of the front and rear feet, the terminal material and blade material, and whether the structure design is reasonable during the end crimping process. One of the main factors of the pressing height of the front and rear feet, such as 1007 # 24AWG electronic wire, is generally 4N in minimum tension. The pressing height of the front foot is required to be 0.7 ± 0.03mm, and the pressing height of the rear foot is required to be 1.35 ± 0.05mm, Therefore, if the tension is not enough, the height of the terminal in the pressing process can be properly adjusted to improve

3、 Terminal off PIN

It is an indispensable process to penetrate the rubber shell during the processing of terminal connecting wire, but the problem of terminal PIN off often occurs during the operation. To avoid this problem, the operator can hear the sound, hear the card or pull back to ensure that the terminal is in place