Special core support for sand box for large engine cylinder block
A technology for engine cylinder block and sand box, which is applied to mold boxes, casting equipment, metal processing equipment, etc., can solve the problems of poor deformation prevention effect of sand core, insufficient rigidity and strength of core support, deformation of sand core due to heat, etc. Broad market application prospects, ensuring multi-directional positioning, and the effect of simple core support structure
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[0016] The present invention will be further explained below in conjunction with the drawings:
[0017] Reference figure 1 and figure 2 , The present invention includes four dumbbell-shaped pillars (upper right pillar 2, lower right pillar 3, lower left pillar 4 and upper left pillar 5) installed on two side plates 1.1 of saddle-shaped bottom plate 1, with 2 pillars on each side, Corresponding installation, the height of the pillar H=(0.6-0.9)×the wall thickness of the sand box on the same side; the minimum diameter of the middle section of the pillar is D=(0.2-0.5)×the diameter of the hot section, both ends of the pillar (ie dumbbell shape) The maximum diameter of the two ends) is 1.5-2 times the minimum diameter. The distance between pillars on the same side is L=(0.2-0.5)×sand core height H1. See figure 1 In this embodiment, due to the different wall thicknesses of the flasks corresponding to the pillars on both sides of the plate 1.1, the heights of the pillars on both side...
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