Stable-pressure device of Zinc alloy die casting mold

Abstract

The invention discloses a stable-pressure device of Zinc alloy die casting mold which includes a container chamber (1), a flow channel (2), a mechanism chamber (3), a piston (4), a piston bush (5), a spring (6) and a limit cover (7). The die casting mold is equipped with an elastic damping absorbing device which is composed of the piston (4) and the spring (6), and is communicated with a die cavity. The elastic damping absorbing device stabilizes pressure by staying acting time of impact force. The stable-pressure device of Zinc alloy die casting mold reduces and eliminates harm to the mold and product by inertial impaction of melt flow through the piston (4) and the spring (6) buffering absorbing which makes the die casting mold and casting technique no-depending on 'high cost', 'low efficiency' for resisting 'liquid hammer' impacting, and reaches aims of reducing mold cost, prolonging mold working life, increasing producing efficiency and stabilizing product quality.

Description

technical field [0001] The present invention relates to a zinc alloy die-casting mold, specifically refers to a zinc alloy die-casting mold voltage stabilizing device which is installed in the die-casting mold and is used to buffer and eliminate the inertial impact pressure which is harmful to the molding of the mold and the product produced by the zinc alloy molten fluid at the moment of die-casting . Background technique [0002] Zinc alloy die-casting parts, which are widely used in automobiles and electromechanical products, are pressurized by a die-casting machine to inject hot molten liquid zinc alloy fluid into the cavity of a die-casting mold to condense and form it. During die-casting, the zinc alloy molten fluid rushing into the mold cavity acquires a certain speed, that is, the momentum mv, when it is pushed by the die-casting piston. When the molten fluid fills the mold cavity and stops flowing, its momentum m·v is all converted into impulse When f·t is released...

AI Technical Summary

Problems solved by technology

The "liquid hammer" effect in die-casting seriously affects the working life of the die-casting mold, causing deformation and damage, and leads to the instability of the product size, which is easy to cause overflow defects at the parting surface of the mold

In the existing technology, in the mold making, the impact of the "liquid hammer" is resisted by using high-impact materials, increasing the wall thickness of the mold, and improving the mechanical strength of the mold. Rapid injection is used to reduce the effect of "liquid hammer", but this will increase the cost of the mold, and at the same time, it will cause the problem that the product is prone to condensation and lack of material at the end of the cavity, and the production efficiency is low.

Therefore, there are problems and deficiencies such as high mold cost, low production efficiency, and unstable product quality in the prior art.

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