Foundry sand compaction molding machine

Abstract

The invention discloses a compaction moulding machine for a cast sand mould. The compaction moulding machine comprises a machine base and a guide column arranged on the machine base. The guide columnis provided with an upper box and a lower box which can move up and down. The compaction moulding machine further comprises a formwork suspension frame which can move between the upper box and the lower box. The upper part of the formwork suspension frame is provided with an upper formwork, and the lower part of the formwork suspension frame is provided with a lower formwork. The formwork suspension frame is internally provided with a driving mechanism used for driving the upper formwork to move upwards and driving the lower formwork to move downwards. The compaction moulding machine is reasonable in structural design, the formworks located between the upper box and the lower box are driven, the upper formwork moves upwards to extrude an upper box sand mould to be compact, the lower formwork moves downwards to extrude a lower box sand mould to be compact, and the upper box sand mould and the lower box sand mould are extruded to be compact at mould joints reversely; the obtained cast sand mould is low in top degree of density and high in mould joint degree of density, and the quality of a casting can be improved; and the upper sand mould and the lower sand mould are extruded to be compact simultaneously, so that force is balanced, stable and reliable.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a casting sand compaction molding machine. Background technique [0002] Most of the current casting sand compaction molding machines are relatively compacted from top to bottom, and after the upper box and the lower box cooperate, the relative compaction is carried out from the top of the upper box and the bottom of the lower box. There are following deficiencies in the compaction of existing foundry sand molds: due to compaction from the top of the sand mold, the top of the sand mold has a high density, which is not convenient for venting during casting; the density of the parting surface of the sand mold is low, which affects the quality of the casting. Contents of the invention [0003] Aiming at the deficiencies of the existing technology, the technical problem to be solved by the present invention is to provide a casting sand mold compaction molding machine, which can obt...

AI Technical Summary

Problems solved by technology

The existing casting sand mold compaction has the following disadvantages: due to the compaction from the top of the sand mold, the top of the sand mold has a high density, which is not easy to vent during casting; the parting surface of the sand mold has a low density, which affects the quality of the casting

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