Cylinder head sand core group and assembling method

Abstract

The invention discloses a cylinder head sand core group and an assembling method. The cylinder head sand core group comprises a chassis sand core, a lower main body sand core, an air channel sand core and an upper main body sand core, wherein the lower main body sand core is locked with the chassis sand core through a first screw, a frame of the lower main body sand core is provided with an adhesive convex platform, an adhesive groove is formed in a frame of the upper main body sand core, the adhesive groove is buckled with the adhesive convex platform to form a chamber, the chamber is communicated with the outer side of the upper main body sand core through an injection hole, and a hot melt adhesive enters the chamber through the injection hole and is solidified to enable the upper main body sand core and the lower main body sand core to be bonded together. The invention also discloses an assembling method of a cylinder head sand core. The cylinder head sand core group is high in production speed, firm in structure and low in cost.

Description

Technical field [0001] The invention relates to the field of engine casting, in particular to a cylinder head sand core assembly and an assembly method. Background technique [0002] In the casting process, sometimes the product produced has a cavity structure. When casting this cavity structure, a sand core with the same shape as the cavity is often used as a model. The sand core model is wrapped in molten metal. After cooling and forming, shock the casting to break the sand core in the inner cavity of the casting, and pour out the broken sand to obtain the desired cavity structure. Therefore, before casting this kind of product, the sand core must be made first, and the sand core is generally made through a core box. When making sand cores with complex shapes, such as engine cylinder heads, they cannot be made in a core box. Now the general method of making sand cores is to divide the sand cores into several parts, and each part of the sand core is made in a single core box. ...

AI Technical Summary

Problems solved by technology

[0004] However, this method has a long time for the viscose to solidify, sometimes the bonding is not firm, and it is prone to dislocation or movement during the sand core circulation process

In order to ensure solidification, it is often necessary to dry the viscose in a matching oven to extend the production cycle

In addition, the amount of glue used is large and there are many bonding parts, the cost of glue is high, and the operation is frequent, which is not suitable for the rapid production rhythm of mechanized assembly lines

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