A mold for forming arched workpieces

Abstract

The invention discloses a mold for molding an arch-shaped workpiece. The mold comprises a fixed mold, multiple outer mold cores, multiple inner mold cores, inclined ejectors and an ejector pin plate assembly. The fixed mold is provided with a pressing block, and the pressing block is provided with a limiting face extending in the front view direction. The multiple outer mold cores are used for molding outer side faces of the arch-shaped workpiece. The multiple inner mold cores are used for molding inner side faces of the arch-shaped workpiece; the back side of each inner mold core is providedwith a back face and a guiding face, wherein each back face and the side direction are arranged in a face-to-face manner, and each guiding face extends in the side direction; and each back face is provided with multiple ejection holes. The inclined ejectors are fixedly connected with the inner mold cores and used for ejecting the inner mold cores inwards in an inclined manner in the front view direction. The ejector pin plate assembly comprises a base plate, a panel and an ejector pin; the base plate and the panel are matched with the guiding faces in a sliding manner; the panel is located between the back faces and the base plate; and the edge, close to each inclined ejector, of the base plate is provided with an inclined face which is inclined inwards in the front view direction. By means of the mold for molding the arch-shaped workpiece, smooth demolding of the arch-shaped workpiece in a narrow and small space can be achieved, and thus integrated molding of the arch-shaped workpiececan be achieved conveniently; and the manufacturing process can be simplified, and the production cost can be saved.

Description

technical field [0001] The invention relates to the technical field of injection molding equipment, in particular to a mold for molding arched workpieces. Background technique [0002] Arched workpieces are generally structural members that include arched connections. For example, a headset includes an arched head and neck and earphone speaker cavities connected to both ends of the head and neck. Most of the existing earphones are formed by separately molding the head and neck and the speaker cavity, and finally assembling, which makes the production process cumbersome and the product structure complicated. After the head and neck are integrated with the speaker cavity of the earphone, the assembly process can be simplified, and the appearance of the product can be more concise and beautiful. During the demoulding process, the headphone speaker cavity must be ejected through the thimble and the cylinder, but after the head and neck are integrated with the earphone speaker ...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to propose a mold for forming arched workpieces, aiming at solving the technical problem of difficult demoulding of arched workpieces in a narrow space

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