A die-cast integral extrusion die

Abstract

The invention discloses an integrated die-casting extrusion die. The integrated die-casting extrusion die comprises a fixed die (1) and a movable die (3) with die feet (2), and further comprises an intermediate plate (4) parallel with the end face of the fixed die (1). The intermediate plate (4) is connected with the fixed die (1) through a guide mechanism. A sprue (5) is formed in the center of the intermediate plate (4). A distance control mechanism used for pushing the intermediate plate (4) is arranged in the fixed die (1). The integrated die-casting extrusion die has the advantages of being ingenious in design and low in cost. By adopting the integrated die-casting extrusion die, after a die-casting machine carries out die-casting on the die, an extrusion space can be reserved for the die for secondary extrusion, so that the compactness of product structures is improved, the strength of products is improved, and the quality of the products is better.

Description

technical field [0001] The invention relates to a die, in particular to a die-casting integral extrusion die. Background technique [0002] With the continuous development of die-casting technology, higher requirements are put forward for the weight, mechanical properties, complex procedures, and appearance of castings. In die-casting, especially die-castings with uneven product thickness or thicker overall wall thickness, There is a lot of liquid metal filling in the mold cavity, which is more prone to shrinkage and porosity. Although there is a pressurization process in the die-casting process, for die-castings with uneven thick walls or thicker overall wall thicknesses, the mold The molten metal in the thick part of the cavity accumulates more heat, so the solidification of the molten metal in this part will be slower than other parts, especially in the case where the inner gate of the product is not allowed to be thicker, the cooling of the ingate is obviously faster tha...

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Problems solved by technology

[0002] With the continuous development of die-casting technology, higher requirements are put forward for the weight, mechanical properties, complex procedures, and appearance of castings. In die-casting, especially die-castings with uneven product thickness or thicker overall wall thickness, There is a lot of liquid metal filling in the mold cavity, which is more prone to shrinkage and porosity. Although there is a pressurization process in the die-casting process, for die-castings with uneven thick walls or thicker overall wall thicknesses, the mold The molten metal in the thick part of the cavity accumulates more heat, so the solidification of the molten metal in this part will be slower than other parts, especially in the case where the inner gate of the product is not allowed to be thicker, the cooling of the ingate is obviously faster than that of the thick part It should be fast, and the temperature of the surrounding near-mold cavity wall is currently cooling and solidifying as the mold temperature drops, and a closed liquid pool is formed in the central thick area. The liquid has basically solidified, so the pressurization in the process cannot be normally transmitted to the thick and large parts of the product, making the structure of this part relatively loose and unable to meet the requirements of tissue compactness

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