Automatic mold release mechanism for engine casting complex sand core mold

Abstract

The invention discloses an automatic mold release mechanism for an engine casting complex sand core mold. The automatic mold release mechanism comprises a lower core box and a mold cavity formed in the lower core box and matched with the outer contour of the lower portion of a sand core. The mold cavity of the lower core box is internally and slidably provided with a movable block in an up-down mode, and the movable block and the mold cavity enclose a cavity matched with the outer contour of the lower portion of the sand core. A jacking mold release mechanism capable of jacking the movable block and the sand core upwards is arranged on the lower part of the lower core box, and a sliding guiding structure is arranged between the lower core box and the movable block. According to the automatic mold release mechanism, the structural design is reasonable, the automatic mold release during casting can be met, efficiency is high, core-making precision is high, production cost is low, a moldis convenient to use, and the cumbersome equipment interface design is not required; and since the parts are less, the mold use and maintenance are convenient, automated core-taking production can berealized, and meanwhile, the labor intensity of operators is reduced.

Description

technical field [0001] The invention relates to the technical field of casting, more specifically, it relates to an automatic demoulding mechanism for complex sand core molds in engine casting. Background technique [0002] With the expansion and improvement of engine functions and performance, engine parts are becoming more and more complex, especially the engine body, cylinder head and other parts, and the engine body and cylinder head are basically obtained by casting. Due to structural reasons, casting Difficulty in mold demoulding design, and a new demoulding mechanism is urgently needed to solve these problems. [0003] General casting molds only have two mold opening directions, up and down, which requires that the parting surface of the sand core can only be a continuous surface, and the projections in the demoulding direction do not overlap. For special and complex sand core structures, the current general There are two demoulding mechanisms; [0004] One is to in...

AI Technical Summary

Problems solved by technology

[0006] The first solution is for sand cores with relatively special structures, such as the water jacket core of the machine body. Due to the sand cleaning hole structure on the side, it is necessary to adopt a four-opening mold structure to be able to open the mold. If this structure is adopted, the complexity of the mold design will be greatly increased, and the manufacturing cost and maintenance cost of the mold will be greatly increased.

[0007] The second scheme has a simpler structure, but it will increase the labor intensity of the on-site operators, because after manually taking out the live block, it needs to be manually put back into the mold, which will also have a great impact on the production efficiency

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