What are the precautions for the use of PIN needles?
Release time:
2023-10-02 09:01
Precautions for the use of pin needles: 1. The compression amount is generally 2/3 of the total stroke. If the pressure is too small and the positive force is not enough, it will cause unstable resistance and excessive pressure, which will cause the nozzle to be injured and cause the pin needle to be stuck. Attention should also be paid to avoid bumping the nozzle and causing the pin needle to be stuck.
The pin needle is applied in the contact direction.
3. The battery contact piece or FPC gold finger paired with the Pin needle must not be dirty, oxidized, etc.
A: There should be no residual sealing liquid
The contact surface of the pin pin pair shall be free of dirt, etc.
B: There can be no other dirty residue
Pin needle assembly to avoid touching the plastic fence
4, Pinneedle head and nozzle in the assembly and use to avoid the plastic barrier.
Pin needle assembly to avoid touching the plastic fence
Pin pin spring seems to be a simple part, but if there is no good quality control and perfect manufacturing process level, it is very easy to have the problem of power failure and pin card, or the durability (life) is too short. Its process is extremely fine and complex, from lathe processing, electroplating, assembly, each process may bring serious hidden dangers.
For example, lathe processing should be processed by a Japanese automatic lathe, so that the precision of the parts can be guaranteed within/-0.01mm, but most factories are processed by a cutting machine, and the precision cannot be guaranteed at all. Second, the surface finish of the lathe, especially the inner surface finish of the needle tube is very critical. The vast majority of factories do not have surface roughness testing equipment and do not regulate this important parameter at all.
In terms of electroplating process, the thickness of the coating has a huge impact on the cost structure. The TOPLINK gold plating is 16u ", but most other brands are in 1 ~ 2u", with a large gap.
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