Secondary ejection die casting die

Abstract

The invention relates to the technical field of die casting dies, in particular to a secondary ejection die casting die. The secondary ejection die casting die comprises a fixed die block, a movable die assembly, a first hydraulic cylinder, a mounting frame and a lifting assembly. The first hydraulic cylinder drives a first hydraulic rod, the top end of the first hydraulic rod is fixed to a supporting table, the first hydraulic cylinder pushes a die core upwards to move upwards, the first hydraulic cylinder drives the first hydraulic rod and a second hydraulic cylinder to synchronously drive a second hydraulic rod, a die casting and the die core synchronously move upwards, first-time ejection and separation of the die casting and the die core from the movable die assembly are achieved, when a sliding plate is tightly attached to the bottom end of the movable die assembly, a spring starts to be compressed, a baffle at the bottom end of the spring reduces the upward speed of the first hydraulic cylinder, the upward moving speed of the die casting is larger than that of the die core, secondary ejection is achieved, the die casting is separated from the die core, and therefore damage to the die casting due to one-time ejection of the die casting and over-tight die core is avoided, the stability of the die casting is ensured, and the quality of die-cast products is improved.

Description

technical field [0001] The invention relates to the technical field of die casting molds, in particular to a secondary ejection die casting mold. Background technique [0002] When the finished product produced by die-casting is taken out from the mold, it is necessary to use an ejection mechanism to eject the finished product. The ejection action is generally completed at one time, but when the die-casting product has a special shape or cannot be ejected at one time due to other reasons, it is necessary A secondary ejection die-casting mold is needed. The secondary ejection die-casting mold can make the die-casting finished product be taken out of 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 ejection parts of the existing secondary ejection die-casting mold cannot be disassembled, which is not conv...

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

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