Mould of air cooler sand core in large diesel engine

Abstract

The invention discloses a sand core mould of an air cooler sand core in a large diesel engine. The sand core mould comprises an upper core box, a lower core box and a plurality of side surface loose pieces, wherein the upper core box is provided with an upper cavity of the air cooler sand core; a lower cavity of the air cooler sand core, which is matched with the upper cavity of the upper core box and is provided with a plurality of yielding loose piece-shaped surfaces, is formed in the lower core box; the side surface loose pieces are arranged in the yielding loose piece-shaped surfaces of the lower core box. According to the mould, the structure is simple and reasonable, each core box is made of a cast iron material, the shape of the periphery of the core box is designed to be matched with the sand core, and the total weight of the mould can be reduced and the manufacturing cost can be saved while the strength of the core box is guaranteed and the deformation is prevented; the local part of the core box adopts a loose piece structure, so that the problem that the sand core cannot be smoothly demoulded is effectively solved, the operation is convenient and flexible, and the core-making efficiency is high; moreover, the made sand core is small in deformation and good in sizing precision.

Description

technical field [0001] The invention relates to the field of large diesel engines, in particular to a sand core mold for an air cooler of a large diesel engine. Background technique [0002] The structure of the front-end box of the existing large diesel engine is illegally complicated, and its internal structure is arranged compactly, such as figure 1 As shown, the air cooler sand core 1 of the large diesel engine front box is independent, with a length of 2 meters and a width of 1 meter. The spatial shape is Z-shaped, and has a first shape surface 11, a second shape surface 12, a second shape surface Three shape surfaces 13, the fourth shape surface 14 and the fifth shape surface 15, resulting in a more complex shape, [0003] The sand cores of low-power diesel engines mostly adopt core-shooting machine cores, and the sand cores of air coolers in front-end boxes of large-scale diesel engines are too long and easily deformed, so it is difficult to use core-shooting machine...

AI Technical Summary

Problems solved by technology

[0002] The structure of the front-end box of the existing large diesel engine is illegally complicated, and its internal structure is arranged compactly, such as figure 1 As shown, the air cooler sand core 1 of the large diesel engine front box is independent, with a length of 2 meters and a width of 1 meter. The spatial shape is Z-shaped, and has a first shape surface 11, a second shape surface 12, a second shape surface Three shape surfaces 13, the fourth shape surface 14 and the fifth shape surface 15, resulting in a more complex shape,

[0003] The sand cores of low-power diesel engines mostly adopt core-shooting machine cores, and the sand cores of air coolers in front-end boxes of large-scale diesel engines are too long and easily deformed, so it is difficult to use core-shooting machine cores.

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