How to deal with the gap between injection molds?

The scrap is basically the reverse image of the hole forming. In other words, the same direction is the opposite direction. After checking the scrap, you can judge whether the gap between the upper and lower injection molds is correct. If the gaps are too large, the waste will have a rough, bumpy broken appearance and narrow bright band areas. The larger the gap, the larger the crack point and the larger the bright band area. If the gap is too small, the scrap will show cracks with small visible dots and wide bright bands.

The gap between the injection molds is too large, resulting in a large curved tear edge, which in turn makes the profile slightly protruding and the edge thins. If the gap between the injection molds is too small, the strip will bend slightly and tear at a large angle, and then the section will be roughly perpendicular to the material surface. The ideal waste should have a reasonable crushing angle and a uniform bright band. This will keep the drilling pressure very low and create a clean round hole with few burrs. From this point of view, increasing the gap between injection molds to extend the service life of the mold will reduce the quality of the finished hole.

The gap between Automotive Mould is related to the type and thickness of stamping data. Unreasonable clearance will lead to the following problems: if the clearance is too large, the burr of the stamping part will be larger and the stamping quality will be poor. If the gap is too small, although the punching quality is good, the wear of the die is serious, which greatly reduces the service life of the die, and only the crack of the punch will be formed. If the gap is too large or too small, it is easy to create adhesion on the punch data, resulting in stripes during the punching process. If the gap is too small, a simple vacuum is created between the bottom face of the punch and the sheet.