Casting sand mold compaction molding machine

Abstract

The invention relates to the technical field of casting, in particular to a casting sand mold compaction molding machine which comprises a machine box mechanism, a temperature control mechanism and amolding mechanism. The temperature control mechanism is fixedly arranged on the machine box mechanism and located below the molding mechanism, and a molding sand molding chamber is filled with moldingsand. The molding sand in the molding sand molding chamber is compacted in the downward pressing process of an active molding driving assembly, stepped change of the pressure borne by the molding sand is achieved through the arrangement of a telescopic connecting rod, the situation that the molding sand is dispersed unevenly due to the fact that the molding sand is pressed excessively when beingin initial contact with a molding sand die-casting plate is prevented, and the molding strength is improved. When a driving rod presses downwards, a pressing plate moves downwards, an inner push plateis driven to extrude the molding sand in a molding box from the side face, the molding sand die-casting plate is assisted in achieving the compaction operation of the molding sand, the tightness degree of the molding sand is improved, a switch is triggered through the pressing plate, automatic starting and stopping of the cooling process along with the compaction operation are achieved, the structure is simple, the equipment manufacturing cost is reduced, and the economic applicability is higher.

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] Sand casting refers to the casting method of producing castings in sand molds. Steel, iron and most non-ferrous alloy castings can be obtained by sand casting methods. Because the molding materials used in sand casting are cheap and easy to obtain, the casting molds are easy to manufacture. It can be adapted to piece production, batch production and mass production. For a long time, it has been the basic process in casting production. In the sand casting process, in order to realize the plastic process of the molding sand, the casting sand compaction molding machine is usually used to compact the molding sand. In practical operation, the foundry sand compaction molding machine uses the pressure plate to compact the molding sand from top to bottom, but the existing pressure plate is directly fixed on the driv...

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Problems solved by technology

[0003] The object of the present invention is to provide a casting sand compaction molding machine, which can reduce the pressure on the molding sand die-casting plate and the molding sand when it is just in contact, realize the stepwise change of the pressure on the molding sand, and prevent the molding sand from initially contacting the molding sand die-casting plate. The problem of uneven dispersion of the molding sand caused by excessive pressure during the time can avoid cracks inside the compacted molding sand, improve the molding strength, improve the compactness of the molding sand, and realize the automatic start and stop of the cooling process accompanied by the compaction operation without manual operation. , and there is no need to install complicated control programs, the structure is simple, easy to use, the manufacturing cost of the equipment can be greatly reduced under the condition of unmanned operation, and the advantages of stronger economic applicability are used to solve the drive The components provide high pressure for the pressing plate. When the pressing plate is just in contact with the molding sand, excessive pressure will easily lead to untimely and uneven dispersion of the molding sand, resulting in cracks in the middle of the molding sand, reducing the molding strength of the molding sand, and after the molding sand is compacted It fits closely with the modeling box, it is inconvenient for the staff to take it out, and the problem of poor practicability

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