CN202727249U - Plastic mold - Google Patents

Abstract

The utility model discloses a plastic mold, which comprises a stationary mold and a movable mold, wherein the stationary mold comprises a gate, a stationary mold plate and a stationary mold core which is fixedly connected with the stationary mold plate; the movable mold comprises a movable mold plate, a movable mold core, a pulling core, a knock-out lever and a push plate, and the movable mold core is arranged on the movable mold plate; one end of the pulling core is fixed on the movable mold plate, and the other end of the pulling core is arranged inside the movable core; one end of the knock-out lever is fixed on the push plate, and the other end penetrates the pulling core; and a spring is arranged between the movable mold core and the movable mold plate, one end of the spring is connected with the movable mold core, and the other end is connected with the movable mold plate. According to the plastic mold, the principle that the plastic has a retraction property is utilized, and a two-demolding way is used for designing the plastic mold, so that a slide block or an oblique ejector mechanism is saved, the size of the mold is correspondingly reduced, and the mold cost is greatly reduced.

Description

A kind of plastic mould

Technical field

The utility model relates to a kind of plastic mould, belongs to die industry.

Background technology

In Design of Dies, the selection of die joint is a vital step.The selection of die joint should be convenient to the demoulding of product, makes product stay dynamic model on one side when die sinking as far as possible.In the time of can not forming the structure of product or shape when mould vertically divides mould, the designer tends to adopt oblique top, slide block or the design of loosing core.

For a kind of plastic cap nut shown in Figure 1, this product is cylinder-shaped thin wall spare, and there is blind hole B1 its inside, and outer rim has a few sawtooth A1.If with product traverse discharge, die joint then can pass the center of cylinder, then needs to adopt slide block or oblique top design to realize the product demoulding, has virtually increased the manufacturing cost of mould.

The utility model content

For solving the problems of the technologies described above, the utility model provides a kind of plastic mould, to realize reducing the purpose of die cost.

For achieving the above object, the technical solution of the utility model is as follows:

A kind of plastic mould comprises fixed half and moving half, and described cover half comprises cast gate, solid plate and the fixed mold core of fixing with solid plate; Described dynamic model comprises moving platen, mavable module core, looses core, beats bar and push pedal, and described mavable module core is positioned on the described moving platen;

A described end of loosing core is fixed on the described moving platen, and the other end is arranged in described mavable module core;

A described end of making bar is fixed in the described push pedal, and the other end passes described loosing core;

Be provided with flexible member between described mavable module core and the described moving platen, an end of described flexible member is connected with described mavable module core, and the other end is connected with described moving platen.

Preferably, described flexible member is spring.

By technique scheme, the plastic mould that the utility model provides has utilized plastics to have these characteristics of shrinkage, and the end face of getting product is die joint, product is vertically placed carried out discharge.Die sinking after the product cooling is shunk, spring separates mavable module core and moving platen, and product breaks away from first looses core, and then push rod is forced product to eject from mavable module core.The disclosed plastic mould of the utility model adopts the mode of two demouldings to design, and has saved slide block or pitched roof mechanism, and the size of mould has also been dwindled accordingly, has therefore reduced widely die cost.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.

Fig. 1 is a kind of sectional front view of nut;

Fig. 2 is the generalized section of the disclosed a kind of plastic mould of the utility model embodiment;

Fig. 3～4 are the die sinking process generalized section of the disclosed a kind of plastic mould of the utility model embodiment.

The specific embodiment

Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described.

The utility model provides a kind of plastic mould (referring to Fig. 2), comprises fixed half and moving half.Cover half comprises cast gate 11, solid plate 12 and the fixed mold core 13 of fixing with solid plate 12; Dynamic model comprises moving platen 16, mavable module core 14, loose core 15, play bar 17 and push pedal 18.

Mavable module core 14 is positioned on the moving platen 16; 15 the end of loosing core is fixed on the moving platen 16, and the other end is arranged in mavable module core 14.

An end of making bar 17 is fixed in the push pedal 18, and the other end passes looses core 15.

Be provided with spring 19 between mavable module core 14 and the described moving platen 16, an end of spring 19 is connected with mavable module core 14, and the other end is connected with moving platen 16.Adopt excellent power glue also can realize the function identical with spring 19, be not described specifically at this.

The die sinking process of the disclosed plastic mould of the utility model is as follows:

Referring to Fig. 3, dynamic model is decorporated backward, and the strength of filling on spring 19 disappears, and spring 19 resiliences separate mavable module core 14 and moving platen 16, and product A can break away from looses core 15.

Referring to Fig. 4, because plastics have shrinkage, product A can shrink through cooling after injection moulding.Product A breaks away from looses core after 15, and the push rod K1 on the injection machine advances and promotes push pedal 18, and then drives and make bar 17 product A is ejected.

The plastic mould that the utility model provides has utilized plastics to have these characteristics of shrinkage, and the end face of getting product is die joint, product is vertically placed carried out discharge.Die sinking after the product cooling is shunk, spring separates mavable module core and moving platen, and product breaks away from first looses core, and then push rod is forced product to eject from mavable module core.The disclosed plastic mould of the utility model adopts the mode of two demouldings to design, and has saved slide block or pitched roof mechanism, and the size of mould has also been dwindled accordingly, has therefore reduced widely die cost.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (2)

1. a plastic mould is characterized in that, comprises fixed half and moving half, and described cover half comprises cast gate, solid plate and the fixed mold core of fixing with solid plate; Described dynamic model comprises moving platen, mavable module core, looses core, beats bar and push pedal, and described mavable module core is positioned on the described moving platen;

A described end of loosing core is fixed on the described moving platen, and the other end is arranged in described mavable module core;

A described end of making bar is fixed in the described push pedal, and the other end passes described loosing core;

Be provided with flexible member between described mavable module core and the described moving platen, an end of described flexible member is connected with described mavable module core, and the other end is connected with described moving platen.

2. a kind of plastic mould according to claim 1 is characterized in that, described flexible member is spring.

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