Verify the root cause of the quality new energy rectangular contact pre-broken copper wire

When the pre-breaking punches of the upper and lower molds are misaligned, the pre-breaking part of the quality new energy rectangular contact will form a pre-breaking residual material and lead to defective copper wires.

Countermeasures for the disappearance of the quality new energy rectangular contact pre-broken copper wire problem:

1. Repair the mold, replace the pre-breaking punch, and confirm that the new punch meets the specifications of the drawing.
2. The pre-break shape control is added to the manufacturing process, and the upper and lower molds of the connector terminals are required to be misaligned in the proper position.
3. Add pre-broken copper wire inspection to the production process, and use a microscope to confirm whether there is any copper wire in the pre-broken part of the quality new energy rectangular contact for each continuous trial folding of 50PCS.

Reasons for poor quality new energy rectangular contact hole pitch:

1. The mold gap is offset on one side
2. The mold hole distance itself is incorrect
3. The parts are not pushed in place during punching

The reason for the excessive burr of the quality new energy rectangular contact:

1. Convex and concave die blades are unfavorable
2. The mold gap is too large
3. The mold gap is offset on one side

The reason why the quality new energy rectangular contact hole is biased to one side:

1. The part is not aligned when punching
2. The mold design of quality new energy rectangular contact has defects