CN200939670Y

CN200939670Y - Exhaust nosespike structure

Info

Publication number: CN200939670Y
Application number: CN 200620063350
Authority: CN
Inventors: 杨俊梅
Original assignee: Mitac Precision Technology Shunde Ltd
Current assignee: Mitac Precision Technology Shunde Ltd
Priority date: 2006-08-25
Filing date: 2006-08-25
Publication date: 2007-08-29
Anticipated expiration: 2016-08-25

Abstract

The utility model discloses a new structure of exhaust thimble, which is mainly applied in mold composed of a core and a cavity plates in relative and an open setting. A formed space is reserved between the core and cavity plate, and a core insert is arranged in the core plate, one side, away from the cavity plate, of the core plate is in adjacent setting with a ejector plate. Besides, a plurality of exhaust thimbles are fixed on the ejector plate one-ended, the other ends are penetrated through the core plate and the core insert, extending in the formed space. The end of the thimble is tight fitted with the core insert, and the minute gap, formed between the sidewall of the exhaust thimble a certain distance from the end and the core plate, does good to exhaust. The utility model has the advantages of simple structure and fine exhaust performance.

Description

A kind of exhaust thimble structure

Technical field

The utility model relates to a kind of mould structure, particularly a kind of exhaust thimble structure.

Background technology

When utilizing mould-forming process to make plastic product at present, need to utilize the mould structure of making in advance, and the plastics of fusion are injected among the mould to reach the purpose of shaped article by injection machine.

When the relatively large product of injection mo(u)lding, its temperature also reduces the plastics of fusion thereupon gradually along with the progress of injection moulding, be easy to generate joint line and fill condition of poor, and exhaust is bad, though common thimble also has scavenging action, in order to strengthen exhaust when the injection moulding, present way is in the temperature lower, or product is difficult for penetrating full and the serious local inserting piece of joint line when moulding, but this kind adopts the form of inserting piece to need line to cut and is manufactured into son, the processing charges height, and product is easy to generate burr and offset, increased the matched moulds difficulty.

Summary of the invention

In view of the above problems, the utility model has disclosed a kind of novel exhaust thimble structure, and this exhaust thimble structure is simple, and exhaust effect is good.

For reaching above-mentioned purpose, the utility model has adopted following technical scheme: a kind of exhaust thimble structure, this structure is mainly used in the mould that comprises a male model plate and a caster, but this male model plate and this caster is oppositely arranged and folding, and reserve a molding space between this male model plate and this caster, in order to shaped article, in addition, be combined with a male model benevolence on this male model plate, and adjacent setting with a liftout plate on the side of this male model plate away from this caster, and be fixed with plurality of rows pneumatic jack pin on this liftout plate, these exhaust thimbles run through this male model plate and this male model benevolence successively, and the one end is stretched and placed above-mentioned molding space, and these exhaust thimbles should be held and this male model benevolence tight fit, and between the sidewall of this end a distance and this male model plate, leave minim gap, be beneficial to exhaust.

Preferable, the utility model provides a kind of exhaust thimble structure, wherein, a distance apart from these exhaust thimbles and the friction tight end of this male model benevolence is concaved with an annular groove, and the two opposite side walls that this exhaust thimble and this annular groove join is set to a plane respectively, forms a chamfered edge section, so, leave minim gap between this chamfered edge section, this annular groove and this male model plate, thereby easily gas is discharged outside the mould.

Above-mentioned technical scheme provides a kind of novel exhaust thimble structure, and this exhaust thimble structure is simple, and has good exhaust performance.

Description of drawings

Fig. 1 is a cutaway view of the present utility model

Fig. 2 is the cutaway view of exhaust thimble

Fig. 3 is the schematic perspective view of exhaust thimble

The specific embodiment

See also shown in Figure 1ly, be cutaway view of the present utility model.Wherein, the utility model is mainly used in the mould with male model part and master mold part, this master mold part mainly comprises a caster 10, be combined with a mother module core 101 on it, but the male model plate 20 on this caster 10 and this male model part is oppositely arranged and folding, again, be combined with a male model benevolence 201 on this male model plate 20, and set in advance effigurate molding space between this mother module core 101 and this male model benevolence 201, its gum-injecting port 401 that utilizes an injection machine 40 injects the plastics of fusion in this molding space, can mold the product consistent with this molding space shape 30.

In addition, this male model plate 20 is away from a side and a upper ejector plate 203 adjacent settings of this caster 10, and this upper ejector plate 203 and liftout plate 204 adjacent settings once, on these, also be set with plurality of rows pneumatic jack pin 202 on the following

liftout plate

203 and 204, as shown in Figures 2 and 3, cutaway view and schematic perspective view for these exhaust thimbles 202, these exhaust thimble 202 1 ends 2024 are fixed on these, on the following

liftout plate

203 and 204, its other end 2021 runs through this male model plate 20 and this male model benevolence 201 successively, and stretch and place above-mentioned molding space, and these exhaust thimbles 202 are somebody's turn to do end 2021 and these male model benevolence 201 tight fits, be concaved with an annular groove 2023 apart from these end 2021 a distance, in addition, these exhaust thimbles 202 are not carried out chamfered edge with the two opposite sides of these male model benevolence 201 friction tight outer walls, form a chamfered edge section 2022, and this chamfered edge section 2022 need be longer than this male model benevolence 201, so, leave minim gap between this annular groove 2023 and this chamfered edge section 2022 and this male model benevolence 201, be beneficial to when shaped article 30, carry out exhaust.

Certainly, these exhaust thimbles 202 also can be designed to the thimble structure of another kind of form, promptly these exhaust thimbles 202 are not ground with this male model benevolence 201 friction tight outer walls and be less one section of diameter, and an end 2021 joints at this section and this close-fitting import a circular arc, make its unlikely male model benevolence 201 of colluding when return, to reach the exhaust purpose, be not described in detail in this.

After 401 pairs of molding spaces of gum-injecting port of injection machine 40 were filled, promptly formable products 30, and in the process of filling, the gas in the molding space carries out exhaust by the gap of 201 of these exhaust thimbles 202 and this male model benevolence, is beneficial to shaped article 30.When die sinking, at first male and

female template

20 and 10 is opened certain space, and these upper and

lower liftout plates

203 and 204 move upward, and moves upward thereby drive these exhaust thimbles 202, and the product 30 of forming is ejected this male model benevolence 201; When mould once more during matched moulds, before contacting, this male and

female template

20 and 10 touches caster 10 earlier by the release link (not shown) that is loaded in the mould structure on upper and

lower liftout plate

203 and 204 earlier, promote upper and

lower liftout plate

203 and 204 move downward reach return after, thereby make mould be in the matched moulds state once more.

Claims

1. exhaust thimble structure, but its be applied to a male model plate and a caster is oppositely arranged and the mould of folding in, this mould mainly comprises:

One molding space, it is arranged between this male model plate and this caster;

One liftout plate, this liftout plate is adjacent to be arranged on the side of this male model plate away from this caster; It is characterized in that:

Plurality of rows pneumatic jack pin, these exhaust thimble one ends are fixed on this liftout plate, its other end runs through this male model plate, and stretch and place above-mentioned molding space, these exhaust thimbles should be held and this male model plate tight fit, and, be beneficial to exhaust apart from leaving minim gap between the sidewall of this end certain position and this male model plate.

2. exhaust thimble structure according to claim 1 is characterized in that, this this friction tight end of exhaust thimble distance is concaved with an annular groove.

3. exhaust thimble structure according to claim 2 is characterized in that, the two opposite side walls that this exhaust thimble and this annular groove join is set to a plane respectively.