Injection mold of automobile eight-way valve body

Abstract

The invention discloses an injection mold of an automobile eight-way valve body. The injection mold comprises a mold core (5) used for forming a central through hole of the automobile eight-way valvebody and a core-pulling rod (6) used for forming a plurality of inclined pulling holes of the automobile eight-way valve body; an ejection mechanism comprises an inclined ejection device and a secondary core-pulling device, and the secondary core-pulling device is arranged between a movable mold assembly (2) and a fixed mold assembly (1) in the horizontal direction; and the mold core (5) is located in a mold cavity, one end of the core-pulling rod (6) is connected with the secondary core-pulling device, and the other end of the core-pulling rod (6) is attached to the outer circumferential surface of the mold core (5) in the mold closing process. In this way, the valve body is integrally formed through injection molding, and therefore the position accuracy and the size accuracy of an oil-way pipeline in the valve body are guaranteed.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to an injection mold for an automobile eight-way valve body. Background technique [0002] At present, more and more auto parts use injection-molded plastic products, especially some parts with complex shapes and more dense curved surfaces. However, there are also some parts with regular appearance and complex internal structure, such as the automobile eight-way valve body, which looks like a square part in appearance, but its interior is composed of many intertwined and complicated oil pipelines. Center through hole and eight oblique draw holes. The manufacture of the existing eight-way valve body is usually realized by drilling. The disadvantages of this manufacturing method are: [0003] 1) Since the oil pipeline is inside the valve body, it is difficult to guarantee the depth of the pipeline. Therefore, once the deep processing of the oil pipeline inside the valve body exceeds ...

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Problems solved by technology

[0003] 1) Since the oil pipeline is inside the valve body, it is difficult to guarantee the depth of the pipeline. Therefore, once the deep processing of the oil pipeline inside the valve body exceeds the size, it may cause the internal pipeline of the valve body to penetrate under the action of oil pressure. The phenomenon, resulting in machine failure, at this time, the valve body will be scrapped if the detection size is unqualified, and the processing error increases the production cost;

[0004] 2) Furthermore, according to actual needs, there will be inclined holes in the oil pipeline in the valve body. According to the processing of the existing technology, under the premise of limited valve body volume, the accuracy of these inclined holes is often not guaranteed, especially The slope does not meet the requirements, which increases the scrap rate and production cost

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