Industry News

How to maintain the convex and concave molds for metal stamping?

2023-05-26

Maintenance of convex and concave molds for metal stamping:

1. When replacing the metal stamping convex mold, it is necessary to test whether the demolding block concave mold is smooth and whether the gap between the test insertion and the concave mold is even; When replacing the metal stamping die, it is also necessary to test whether the gap between the insertion and the punch is even.

2. When disassembling the convex and concave molds for metal stamping, attention should be paid to the original condition of the molds for easy restoration during subsequent mold installation; If there is padding or displacement, the thickness of the gasket should be engraved on the part and recorded.

3. When assembling the metal stamping punch, it is necessary to check whether the gap between the punch and the fixed block or plate is sufficient, and if there is a pressure block, it is necessary to check whether there is any movement margin left. The assembly of the concave mold should be placed horizontally, and then a flat iron block should be placed on the surface of the concave mold. It should be lightly tapped into place with a copper rod, and should not be tilted or forcefully knocked in. The bottom of the metal stamping concave mold should be chamfered. After installation, check whether the concave mold surface is flush with the mold surface.

4. In order to shorten the punch after grinding, it is necessary to add shims to achieve the required length. It is necessary to check whether the effective length of the punch is sufficient. To replace the broken metal stamping punch, the cause should be identified, and the corresponding concave mold should be checked for any broken edges and whether grinding of the edges is necessary.

5. Pay attention to the confirmation of the locking of the screws on the stripper plate for hardware stamping. When locking, balance the force from the inside out, and cross lock. Do not lock one screw first and then another screw to avoid tilting the stripper plate, causing the punch to break or reducing the accuracy of the mold.

6. After the assembly of the metal stamping punch and core, necessary inspections should be carried out on the care belt to check if any parts are installed incorrectly or reversed. The metal stamping punch and cushion blocks should be checked to see if they are installed reversed, if the material hole is blocked, if new parts need to be stolen, if there is enough material to be stolen, and if the mold needs to be locked tightly.