What are the common problems of hardware connectors

We can no longer understand the hardware connector, but many manufacturers often ignore some problems when producing the hardware connector, resulting in the final scrapping of the hardware connector. For example, the hardware connector is prone to problems at the beginning. If the hardware connector cannot be used normally due to neglect, what problems often occur in the hardware connector< br> 1. Eccentricity: poor installation of the second punch and improper adjustment of the machine< br> 2. Crooked head: one punch is not installed properly and the machine is not adjusted properly< br> 3. Head not round: improper selection of a die or insufficient filling of a die< br> 4. Mold crack: the mold is broken or the R angle of the mold is improper, which causes the mold to be scratched by two blows< br>