It is well known that the ratio of MLCC in the material loss of SMT factories is the highest. The loss rate is usually set at 0.2-0.5%, but it may actually be higher. But do you know the main human factors that cause loss? How can we avoid and reduce the loss of human factors?
Look at the following factors summarized from the SMT factory:
1. When the material is installed, the tearing tape is too long and the material is too much to cause loss of material;
2. After the FEEDER is installed, there is debris on the TABLE which causes it to be out of place, shaking and not fetching materials;
3. The material tray is not installed on the FEEDER, causing the chuck and FEEDER TAPE to float and throw materials;
4. Failure to remove the coiled material in time, causing tension changes, non-coiling, poor feeding, and FEEDER TAPE floating and throwing materials;
5. Loss caused by reversing the board, jumping the wrong board, rubbing the board, etc.;
6. Reading the wrong material location and P/N cause wrong material;
7. The quantity of materials is wrong, PCBA is excessive, and the material tray is lost by mistake;
8. The packaging parameters in the edited program are not set correctly, and the number of feeding times used does not match the packaging PITCH, resulting in throwing;
9. Wrong placement and station setting in the edited program cause wrong material;
10. During the production process, FEEDER, NOZZLE, and material throwing technicians failed to follow up the throwing material in time, and the data caused a large amount of throwing material;
11. The feeder cover is not fastened, and the feeder is loaded without checking the feeder;
12. FEEDER is randomly stacked to cause deformation, FEEDER STOPPER is randomly disassembled and placed in disorder;
13. The bad FEEDER failed to be repaired and reused in time, causing throwing.
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