A secondary ejection method

Abstract

The present invention relates to the technical field of die casting molds, specifically a secondary ejection method. The mold to which the method is applied includes a fixed module, a movable mold assembly, a first hydraulic cylinder, a mounting frame, and a lifting assembly; through the first The hydraulic cylinder drives the first hydraulic rod, and the top of the first hydraulic rod is fixed on the support table. The first hydraulic cylinder pushes the core upward to move up. The first hydraulic cylinder drives the first hydraulic rod, and the second hydraulic cylinder synchronously drives the second hydraulic cylinder. rod, so that the die casting and the core move up synchronously to realize the first ejection, the die casting and the core are separated from the moving mold assembly, when the sliding plate is close to the bottom of the moving mold assembly, the spring begins to compress, and the The baffle slows down the upward speed of the first hydraulic cylinder, the upward movement speed of the die casting is greater than the upward movement speed of the core, and the second ejection is realized, and the die casting is separated from the core, so that the die casting is ejected once and the die casting is separated from the core. The core is too tight to cause damage to the die-casting, which ensures the stability of the die-casting and improves the quality of the die-casting product.

Description

technical field [0001] The invention relates to the technical field of die casting moulds, in particular to a secondary ejection method. Background technique [0002] When the finished product produced by die casting is taken out from the mold, it is necessary to use an ejector mechanism to eject the finished product. The ejection action is generally completed at one time, but when the shape of the die cast product is special or cannot be ejected at one time due to other reasons, the A secondary ejection die-casting mold needs to be used. The secondary ejection die-casting mold can make the die-cast finished product take out from the mold more smoothly, and reduce the damage to the product caused by the excessive force of the primary ejection. [0003] However, the existing secondary ejection die-casting mold has great defects when it is reused. The ejector parts of the existing secondary ejection die-casting mold cannot be disassembled, which is inconvenient for later maint...

AI Technical Summary

Problems solved by technology

[0003] However, the existing secondary ejection die-casting molds have great defects when they are reused. The ejector parts of the existing secondary ejection die-casting molds cannot be disassembled, which is inconvenient for later maintenance and shortens the service life of the die-casting molds , is not conducive to cleaning after use, increases the impurities in the mold, reduces the quality of die-casting products, cannot be installed according to needs, and reduces the flexibility of use. The ejection parts of the existing secondary ejection die-casting mold cannot be lifted Adjustment is not conducive to expanding the application range of the product and weakening the effect of ejection. In view of the tight fit between the die-casting product and the mold, it cannot provide good ejection support and reduces the strength of ejection. When the length of the ejected part is insufficient during the mold release process, the length of the ejected part cannot be supplemented

Images