Casting mold

Abstract

The invention relates to a casting mold. The casing mold comprises a first mold body and a second mold body; the first mold body and the second mold body are buckled to form a mold joint, the mold joint of the first mold body is sunken inwards to form a mold cavity, the mold joint of the second mold body is sunken inwards to form a sprue and a strip communication groove, the face, in the length direction, of the communication groove communicates with the sprue, when the first mold body and the second mold body are buckled, the communication groove communicates with the bottom face of the moldcavity, and the cross section of the communication groove in the width direction is smaller than 5 mm<2>. The casting mold has the advantages of being free of manual grinding and improving the yield.

Description

technical field [0001] The present invention relates to molds, in particular to a casting mold. Background technique [0002] The intelligent processing of the gray iron parts of the cylinder of the compressor cylinder of the modern household air conditioner and refrigerator is becoming more and more intelligent. In the prior art, there is a multifunctional combined special machine for processing such gray iron parts. One special machine is a production line. Gray iron castings are fed from blanks and semi-finished products come out. The whole process is fully automated because of the need for automatic processing. , this special machine has very high requirements on the dimensional consistency of castings. [0003] The outer surface of the existing casting on the cylinder of the air conditioner compressor includes two bottom surfaces and one side surface, and may also be provided with a groove passing through the two bottom surfaces, and edges will be formed at the transit...

AI Technical Summary

Problems solved by technology

The disadvantage is that due to the fast production speed and the large water inlet area of ​​the blank holder, it is easy to cause a lack of meat at the gate when the casting and the sprue are torn. Moreover, the casting and the gating system (sprue) are not easy to separate and need to be tapped to Separation, because the knocked part is difficult to fix, it also aggravates the lack of meat in the casting gate

Modern air-conditioning compressor castings are all pursuing light weight, the machining allowance of casting design is small, and the serious lack of meat of castings leads to the increase of defective products

The second is that the edge of the casting is fed with water. The shape of the cavity and the gating system (sprue) are all concentrated on a box. The gate of this process has a wide section in the width direction. In order to reduce the lack of meat in the casting , the gate of the casting is designed with a stress groove, which breaks from the stress groove when it is torn, and most of the castings can fall off automatically, but the residual height of the gate of the casting exceeds the actual demand standard, and it must be manually polished to meet the requirements. The quality of grinding the gate of castings is difficult to control. Missing grinding and excessive grinding will affect the clamping of intelligent manipulators and cannot adapt to the processing of intelligent machines.

No matter which process is used, the structure of the mold will cause the lack of meat or excessive allowance of the casting, which will affect the yield of the casting

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