Injection mold with ring structure ejection mechanism

Abstract

The invention provides an injection mould provided with a mould stripping mechanism with an annular structure. A movable mould core is internally provided with the mould stripping mechanism of a molded product column body; the mould stripping of a convex ring undercut part of a product is realized without a slide block and is realized according to self properties of a plastic part product; a column body of the plastic part product is provided with a special structure, namely a notch; the free end of the column body of the product has a certain deformable performance by virtue of the structure so that the free end of the column body is expanded to be separated from an annular concave ring in a relative movement process of the convex ring undercut and the annular concave ring on a first embedding piece by virtue of a suspension and forced stripping manner of the first embedding piece, and furthermore, the mould stripping movement is finished; therefore, a large mould space is saved by the mould stripping mechanism, a phenomenon that mould cavities are influenced by the slide block to enlarge a gap is avoided and the structure of the mould is simplified; and the embedding piece floating manner is used for replacing a previous mould stripping manner which adopts the slide block, so that the mould manufacturing cost and the injection cost are greatly saved. The injection mould belongs to the technical field of mould equipment.

Description

technical field [0001] The invention belongs to the technical field of mold equipment, and in particular relates to an injection mold provided with a ring-shaped mold ejection mechanism. Background technique [0002] Such as figure 1 Shown product 4, at present, for plastic parts, it is made up of two semi-hollow cylinders, and the outer surface of the cylinder 4.1 has an annular protruding protruding ring undercut 4.2. A slider is used to realize the forming of the convex ring undercut 4.2. When demolding, the two sliders are cut to both sides; the hollow part is realized by a vertically set slider. The disadvantage of such a mold is that there must be enough holes on the mold. The space allows the slider to slide, but for a multi-cavity mold, the slider will cause a great waste of mold layout, which will greatly increase the mold manufacturing cost and mold injection molding cost. Contents of the invention [0003] The technical problem to be solved by the present inve...

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Problems solved by technology

[0002] like figure 1 Shown product 4, at present, for plastic parts, it is made up of two semi-hollow cylinders, and the outer surface of the cylinder 4.1 has an annular protruding protruding ring undercut 4.2. A slider is used to realize the forming of the convex ring undercut 4.2. When demolding, the two sliders are cut to both sides; the hollow part is realized by a vertically set slider. The disadvantage of such a mold is that there must be enough holes on the mold. The space allows the slider to slide, but for a multi-cavity mold, the slider will cause a great waste of mold layout, which will greatly increase the mold manufacturing cost and mold injection cost

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