Insert type demolding mechanism

Abstract

The invention provides an insert type demolding mechanism. The demolding mechanism comprises a core formed on a movable die, wherein the core is of an integrated structure, a straight-channel side blowing hole is formed in the core, the side blowing hole transversely penetrates through the whole core and communicates with a corresponding air flow channel; an insert is embedded in the side blowinghole, an annular side wall of the insert is matched with the inner wall of the side blowing hole, and an air passing gap is formed by an installation gap between the insert and the side blowing hole;and the insert is oppositely provided with a first end face and a second end face, the outer edges of the first end face and the second end face are respectively matched with two ports of the side blowing hole to form two annular blowing ports, and the first end face and the second end face are matched with side forming faces of the core to form auxiliary forming faces. The insert type demolding mechanism can effectively solve the problems that the demolding of the thin-wall deep-cavity plastic parts is difficult and the quality cannot be guaranteed, and the molds are small in processing difficulty, low in processing cost and long in service life.

Description

technical field [0001] The invention belongs to the technical field of injection molds, in particular to an insert type demoulding mechanism. Background technique [0002] Injection molds are widely used in the production and manufacture of plastic products. After the plastic parts are cooled and formed, they need to be demolded under the action of the demoulding structure. The demoulding mechanisms commonly used are push plates and ejector pins. For thin-walled deep-cavity plastic parts, the wall It is thin and easy to be damaged, and the injection molded product has a strong adsorption force on the core, so it is difficult to demould. If the above demoulding mechanism is used for demoulding, it is not only easy to damage the plastic part, but also in order to be able to completely push the plastic part out of the core, it is generally required The height of the mold foot is greater than the depth of the product to meet the needs of the ejection stroke, so the steel consump...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an insert-type demoulding mechanism for the existing thin-walled deep-cavity plastic parts that are difficult to demould, the quality cannot be guaranteed, and the forming mold is difficult to process, high in cost and short in service life.

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