Female die of precoated sand die of uncoupling lever bracket

Abstract

The invention provides a female die of a precoated sand die of an uncoupling lever bracket. The female die comprises a female die body, a sprue runner and die inserts. A female die cavity is formed inthe upper surface of the female die body, and comprises a third cavity and a fourth cavity. The third cavity is quadrilateral. A deep groove is formed around the inner wall of the third cavity, largecentre holes are formed in the positions of the four corners of the deep groove, a sprue groove and die insert grooves are formed in the third cavity, the upper end of the sprue runner is located inthe sprue groove, and the upper ends of the die inserts are located in the die insert grooves. The female die has the beneficial effects that through the reasonable arrangement of the cavities, a runner and sand ejecting openings, the yield of sand shells can be increased, and the yield of uncoupling lever brackets during molten iron casting is increased.

Description

technical field [0001] The invention relates to the field of hot core box manufacturing, in particular to a concave mold of a film-coated sand mold for a lift rod seat of a coupler. Background technique [0002] The coupler lift rod is mainly used on railway locomotives. The coupler lift rod plays a role in unlocking the coupled coupler. The coupler lift rod is fixed on the locomotive through the coupler lift rod seat. The coupler lift rod seat needs to bear a large force. In the prior art, the coupler lifter base is mainly manufactured by casting, but the structural strength of the cast coupler lifter base is relatively low, and multiple machining operations are required to meet the requirements after casting. Contents of the invention [0003] In order to solve the problems existing in the prior art, the present invention proposes a concave mold of a film-coated sand mold for a lift rod seat of a coupler. [0004] Technical scheme of the present invention is realized li...

AI Technical Summary

Problems solved by technology

[0002] The coupler lift rod is mainly used on railway locomotives. The coupler lift rod plays the role of unlocking the coupled coupler. The coupler lift rod is fixed on the locomotive through the coupler lift rod seat. The coupler lift rod seat needs to bear a large force. In the prior art, the coupler lifter base is mainly manufactured by casting, but the structural strength of the cast coupler lifter base is relatively low, and multiple machinings are required to meet the requirements after casting.

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