What are the reasons for injection mold cracking?
1. The uneven colouring of the pressing surface and the bad rubbing will lead to the bad surface quality of the mould, which is easy to cause cracking.
The solutions include adjusting air cushion pressure, using cushion gauze or other plastic cloth to change the flow and inflow of sheet metal, thereby improving the quality of the pressing surface.
2, the damage of pressing bar and the different installation length of mould support stem are also one of the reasons that lead to mould cracking.
For these problems, it is necessary to deal with and repair one by one, to ensure that the mold structure is intact and stable installation.
3, the unreasonable design of exhaust hole and drawing fillet can also lead to die cracking.
In order to solve these problems, we can change the size of blanking plate, increase the process hole, and even print the grid line on the test blanking plate in order to understand the condition of the plate more clearly.
4, the rough surface in the direction of material flow also needs to be polished, and the rounded corners of the complementary parts of the process can be enlarged to ensure that the rounded corners of the shaping and drawing die correspond to each other, thus reducing the risk of cracking. Mold cracking, injection mold cracking is a serious problem, need to consider all kinds of factors and take appropriate measures to solve. By optimizing die design, adjusting process parameters and strengthening die maintenance, the risk of die cracking can be effectively reduced and the product quality and production efficiency can be improved.