Ultra-large type manual core box mold of v-type engine cylinder body and core making method

Abstract

The invention discloses an ultra-large type manual core box mold of a v-type engine cylinder body, belongs to the technical field of sand mold casting, and solves the problem that an existing manual core box mold is not easy to demold. The core box mold comprises a bottom mold and a side mold assembly, wherein the side mold assembly comprises a first side mold, a second side mold, a third side mold and a fourth side mold which are split, the second side mold is arranged on one side of the bottom mold, the fourth side mold is arranged on the other side of the bottom mold, the first side mold and the third side mold are clamped between the two sides of the second side mold and the fourth side mold correspondingly, a pattern area is arranged in an area surrounded by the first side mold, the second side mold, the third side mold and the fourth side mold, and a plurality of split-type patterns are arranged in the pattern area. According to the core box mold, the sand core quality and precision can be effectively improved. The invention further discloses a core making method. The method is used for core making, so that the on-site operation convenience can be ensured.

Description

technical field [0001] The present invention relates to the technical field of sand casting, more specifically, it relates to a super-large manual core box mold for a V-type engine cylinder block, and also relates to a manufacturing of a super-large manual core box mold using a V-type engine cylinder block core method. Background technique [0002] In-line engines are widely used due to their advantages of simple structure, high stability, and low cost. Common in-line engines are generally four-cylinder or six-cylinder, and are all low-to-medium power engines. But for some large and medium power engines, when the displacement and the number of cylinders increase, if the in-line structure is adopted, the length of the engine will be greatly increased, and the installation and arrangement of the engine will be very difficult. Therefore, many large and medium-power engines generally do not use an in-line structure, and are often designed as V-shaped, especially high-power engi...

AI Technical Summary

Problems solved by technology

Due to the relationship between structure and size, it is easy to cause problems such as short service life of the mold, easy scrapping, poor dimensional accuracy of the sand core, difficulty in core assembly, and poor dimensional accuracy of the casting, thereby increasing manufacturing costs, difficult mold demoulding, and core-making site. It is time-consuming and laborious to operate, and the core-making efficiency is low

[0004] According to the existing manual core box mold and core making method of V-type engine cylinder block, although the production of V-type engine cylinder block can also be completed, this casting process still has obvious shortcomings, mainly in: appearance The overall structure design not only wastes raw materials, but also affects processing efficiency and increases processing costs. Moreover, the mold pattern of the overall structure is easily deformed, resulting in problems such as short service life of the pattern, easy scrapping, poor dimensional accuracy of the sand core, and difficulty in core assembly. , thereby affecting the quality and dimensional accuracy of castings; it is difficult to demould the mold, it is time-consuming and laborious to operate the core making on-site, and the core making efficiency is low

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