Finished product slow ejection device for casting

Abstract

The invention discloses a finished product slow ejection device for casting, and relates to the technical field of casting. The finished product slow ejection device for casting comprises a mold, a contraction groove is formed in the top of the mold, a first spring is fixedly connected to the bottom of the contraction groove, a movable block is fixedly connected to the top of the first spring, and a dielectric plate is fixedly connected to the inner wall of the movable block; and a positive plate is fixedly connected to the position, close to the right side of the contraction groove, of the inner wall of the mold. According to the finished product slow ejection device for casting, through cooperative use of a first electromagnet and a second electromagnet, after a finished product is subjected to die-cast molding, the mold is opened, the first electromagnet and the second electromagnet are both in a power-on state at the moment, the first electromagnet and the second electromagnet repel each other, however, due to the fact that the viscosity of magnetorheological fluid is increased under the magnetic action, the difficulty of the magnetorheological fluid passing through a damping hole is increased, a piston block ascends slowly, therefore, the finished product can be automatically popped out, the integrity of the finished product is not damaged, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a slow ejection device for casting finished products. Background technique [0002] Die casting is a kind of filling liquid or semi-solid metal or alloy, or liquid metal or alloy containing reinforced phase, into the cavity of die-casting mold at a high speed under high pressure, and make the metal or alloy under pressure The casting method of solidification to form castings. The pressure commonly used in die casting is 4-500MPa, and the metal filling speed is 0.5-120m / s. In the production process of current die casting, some problems often occur, resulting in production problems. [0003] Most of the current pressure casting is die-casting through high pressure, which makes it difficult to take out the finished die-casting product when it is taken out, and requires manual hand-held tools to peel it off. However, manual operations often make mistakes, resulting in damage to the f...

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Problems solved by technology

[0002] Die casting is a kind of filling liquid or semi-solid metal or alloy, or liquid metal or alloy containing reinforced phase, into the cavity of die-casting mold at a high speed under high pressure, and make the metal or alloy under pressure The casting method of solidification to form castings. The pressure commonly used in die casting is 4-500MPa, and the metal filling speed is 0.5-120m/s. In the production process of current die casting, some problems often occur, causing pr

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