Core assembly pouring device for cylinder block casting in automobile engine

Abstract

The invention discloses a core assembly pouring device for a cylinder body casting in an automobile engine, comprising a base plate (4), two raiser cores (2), a sprue core (3), sand core assemblies (1) and a locking device (5), wherein the sand core assemblies (1) are connected on the base plate (4) and are locked by the locking device (5), the raiser core (2) and the sprue core (3) are located on the two adjacent sand core assemblies (1) which are clamped on the base plate (4), and the locking device (5) is sleeved and pressed outside the two sand core assemblies (1). By adopting the structure, the sand core of the cylinder body consists of a plurality of sand cores, and each sand core is composed of a plurality of small sand cores, thus reducing the size of each sand core, being beneficial to the forming of the sand cores and reducing casting defects of castings; and meanwhile, the number of the sand core assemblies is two, e.g. one die generates two castings, thus greatly improving production efficiency.

Description

technical field [0001] The invention relates to the technical field of metal casting, in particular to a core casting device for cylinder body castings in automobile engines. Background technique [0002] The cylinder block in an automobile engine is usually cast. Its structure is very complex and the cylinder wall is thin, so casting is difficult and the scrap rate is high. At present, there are two pouring methods for the cylinder block in the automobile engine, one is to use the high-pressure molding line after core making to shape and pour, and the other is to use the core to pour. However, these two pouring methods have the following disadvantages: [0003] 1) For the first pouring method, due to the expensive molding line equipment, this pouring method is only used in large enterprises; at the same time, it adopts a horizontal pouring process, and the water jacket wall of the cylinder is thin and easily deformed , Therefore, the scrap rate is high and the production ...

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Problems solved by technology

[0003] 1) For the first pouring method, due to the expensive molding line equipment, this pouring method is only used in large enterprises; at the same time, it adopts a horizontal pouring process, and the water jacket wall of the cylinder is thin and easily deformed , therefore, the scrap rate is high and the production cost is high

[0004] 2) For the second pouring method, since the sand core designed in the process design process is too large, the sand core is not easy to form when doing this, and casting defects of the casting will occur; The core must be fastened with bolts to increase the production process; at the same time, it is generally produced in a single piece, that is, one sand mold can only produce one product; therefore, the production efficiency is low

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