Aluminum alloy die casting mold

Abstract

The invention discloses an aluminum alloy die casting mold. The aluminum alloy die casting mold comprises an upper mold, a lower mold and an ejector plate; the lower mold is provided with a transversecore pulling slide block; a mold core outer molding surface of the lower mold consists of a first molding surface and a second molding surface; the wall thickness of a die-cast piece corresponding tothe second molding surface is larger than the wall thickness of a die-cast piece corresponding to the first molding surface; a mold core is provided with a feeding hole in the second molding surface;a pressing rod associated with a driving oil cylinder is arranged in the feeding hole; the driving oil cylinder enables the pressing rod to axially move from a molding position to a feeding position;the lower mold is provided with a spraying hole corresponding to the transverse core pulling slide block; a plunger spraying device is arranged in the spraying hole; a sealing plate associated with the plunger spraying device is arranged in an opening of the spraying hole; and the sealing plate has a molding state for shielding the plunger spraying device, and a spraying state for exposing the spraying hole outside. The aluminum alloy die casting mold can effectively improve the problems of shrinkage recesses and shrinkage holes, can realize automatic spraying of a die casting release agent,and facilitates demolding of the transverse core pulling slide block.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy die-casting molds, in particular to an aluminum alloy die-casting mold that can effectively prevent shrinkage pores in die-casting parts and facilitate the demoulding of a horizontal core-pulling slider. Background technique [0002] Aluminum alloy die-casting molds usually include an upper mold, a lower mold, a cavity set on the upper mold to match the outside of the product, and a mold core set on the lower mold to match the inside of the product. During die-casting, the upper and lower molds are closed. At this time The gap between the inner molding surface of the cavity and the outer molding surface of the mold core is the molding cavity, and the high-temperature molten aluminum alloy liquid enters the molding cavity through the gate, and then is cooled by the cooling system to form an aluminum alloy The product is then ejected by the ejector mechanism. [0003] When the liquid aluminu...

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Problems solved by technology

[0006] The first purpose of the present invention is to provide an aluminum alloy die-casting mold that can easily form shrinkage depressions and shrinkage holes in thicker parts of the existing aluminum alloy die-casting molds Effectively improve shrinkage sag and shrinkage hole problems under the premise of design, thereby improving the strength and quality of die castings

[0007] The second purpose of the present invention is to solve the problems of difficulty in automatic spraying, low production efficiency, and affecting the safety of operators when spraying mold release agents in die-casting molds with horizontal core-pulling sliders, and to provide a The aluminum alloy die-casting mold can realize the automatic spraying of the die-casting release agent, and the spraying of the release agent is uniform, which is beneficial to the release of the horizontal core-pulling slider

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