CN205522296U

CN205522296U - Lateral part vacuum type thin wall injection moulding mould that admits air brokenly

Info

Publication number: CN205522296U
Application number: CN201620361558.7U
Authority: CN
Inventors: 应丕坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-25
Filing date: 2016-04-25
Publication date: 2016-08-31
Anticipated expiration: 2026-04-25

Abstract

The utility model relates to a lateral part vacuum type thin wall injection moulding mould that admits air brokenly, it inlays the mould body that needle and upper end were equipped with die cavity and core including broken vacuum, broken vacuum is inlayed the needle and is inlayed needle body and spacing ka tai including what connect from top to bottom, mould body bottom is equipped with to inlay with broken vacuum and is directed against the just vertical mounting hole that runs through the core, the vertical insert the installation hole of needle is inlayed in broken vacuum, and it is fixed through spacing ka tai, inlay needle body top end and core top end parallel and level, mould body lateral part is equipped with the lateral part inlet port, the lateral part inlet port inwards extends to inlays needle body department, and be linked together with the lower part of mounting hole, compared with the prior art, the utility model discloses the product uses easy operation, and it is more convenient that production and processing, installation are dismantled, the maintenance is changed, and production efficiency is higher, and broken vacuum effect is better, and life is longer, and the input cost is low, and the plastic products of production level smoothly, more pleasing to the eye more.

Description

Sidepiece air inlet vacuum breaker formula thin-wall injection molding die

Technical field

This utility model relates to mould applications, particularly relates to a kind of injection mold.

Background technology

Thin-wall injection molding die is generally used for producing forming thin-walled plastic.At present, thin-walled is being produced During plastic, in order to make the product can the smoothly demoulding, it will usually before a mold the bottom of mould and after The top of mould installs air pins (valve) additional, and it overcomes spring force to open valve by the air pressure of air inlet, Thin wall plastic products can be departed from smoothly for the vacuum that expellant gas destroys between thin wall plastic products and mould Mould, as shown in Figure 1.

But in actual use, the air pins demoulding has the disadvantage in that

1, spring reset is unstable, is very easy to block and causes into glue, and fault rate is high；

2, air pins (valve) is short for service life, need to often change, and maintenance cost is high, and impact produces Efficiency；

3, air pins (valve) needs interference fit when installing, and often changes easy damaged mould, shortens Die life, and affect thin wall plastic products outward appearance.

Utility model content

Technical problem to be solved in the utility model is to provide that a kind of vacuum breaker is effective, failure rate is low, Service life length, production and maintenance cost is low, produce the most smooth sidepiece attractive in appearance of thin wall plastic products Air inlet vacuum breaker formula thin-wall injection molding die.

The technical scheme that this utility model solves above-mentioned technical problem is as follows:

A kind of sidepiece air inlet vacuum breaker formula thin-wall injection molding die, it includes die ontology and vacuum breaker edge Pin, the upper end of described die ontology is provided with the die cavity for injection mo(u)lding and core, and described core is positioned at institute Stating in die cavity, described vacuum breaker pin includes spacing chuck and pin body, the bottom of described pin body Fixing with the top of described spacing chuck and be connected or one-body molded, the sectional area of described pin body is less than institute Stating the sectional area of spacing chuck, the bottom of described die ontology is provided with the peace corresponding with described vacuum breaker pin Dress hole, described installing hole vertically runs through described core, and described vacuum breaker pin vertically inserts described installing hole In, and fixed with described installing hole by described spacing chuck, the top end face of described pin body and institute The top end face stating core is concordant, and the sidepiece of described die ontology is provided with sidepiece air inlet, and described sidepiece enters Pore extends inwardly at described pin body, and is connected with the bottom of described installing hole.

Compared with prior art, the beneficial effects of the utility model are:

This utility model product has only to vertically insert bottom die ontology vacuum breaker pin in use Installing hole, and by spacing chuck, vacuum breaker pin is stuck in installing hole location, with ensure pin this The top end face of body is concordant with the top of core, and such air-flow directly can flow into pin from sidepiece air inlet Gap between body lower part and die ontology, then flow between top and the die ontology of pin body Gap, then from gap row to the top of core, makes the smooth break away from moulds body of the plastic after molding, Not only using simple to operate, vacuum breaker is effective, and the thin wall plastic products flat smooth produced, more Add attractive in appearance, be prevented effectively from employing valve inner ring and splice line and affect the situation of plastic outward appearance, and break Vacuum pin is more prone to produce, install, demolition, repair, replacement convenient, both thoroughly solve to make The problem being susceptible to fault by air pins (valve), is greatly improved production efficiency, reduces mould damage, Extend die life, reduce again production and the maintenance cost of product.

On the basis of technique scheme, this utility model can also do following improvement.

As a kind of preferred implementation of the present utility model, on the surrounding sidewall of described pin body lower part Being provided with the second cannelure, described sidepiece air inlet is connected with described second cannelure.

Above-mentioned preferred version is used to provide the benefit that: the convenient air-flow of existence of the second cannelure is from side Portion's air inlet flows into the gap between bottom and the die ontology of pin body, then flows to pin body upper part And the gap between die ontology, auxiliary vacuum breaker effect is more preferable, advantageously in the plastic product demoulding.

As another kind of preferred implementation of the present utility model, the surrounding sidewall of described pin body upper part It is provided with first annular groove, the sidewall of described pin body is vertically communicated with described first annular groove and institute State the connectivity slot of the second cannelure.

Above-mentioned preferred version is used to provide the benefit that: the air-flow entered from sidepiece air inlet can directly flow Through the second cannelure, connectivity slot, first annular groove, hence into pin body upper part and die ontology it Between gap, auxiliary vacuum breaker effect is more preferable, advantageously in the plastic product demoulding.

As another kind of preferred implementation of the present utility model, described connectivity slot, described first annular groove , " u "-shaped V-shaped with the cross sectional shape of described second cannelure or circular arc.

Above-mentioned preferred version is used to provide the benefit that: not only production and processing is simpler, and more square Just air-flow passes through.

As another kind of preferred implementation of the present utility model, the top of described pin body is provided with laterally The venthole run through, the bottom of described spacing chuck is provided with bottom inflow hole, and described bottom inflow hole passes Described spacing chuck vertically extending to described pin are the most internal until being connected with described venthole.

Above-mentioned preferred version is used to provide the benefit that: air-flow is possible not only to directly flow into from sidepiece air inlet Gap between pin body lower part and die ontology, then flow to the top of pin body and die ontology it Between gap, it is also possible to directly between bottom inflow hole flows between pin body upper part and die ontology Gap, then from gap row to the top of core, multiple intake method with the use of, air inflow is more, broken Vacuum effectiveness is more preferable, advantageously in the plastic product demoulding.

As another kind of preferred implementation of the present utility model, described venthole and described first annular groove It is connected.

Above-mentioned preferred version is used to provide the benefit that: venthole connects convenient gas with first annular groove Flow and flow into the gap between pin body upper part and die ontology from venthole, then arrange to core from gap Top, vacuum breaker effect is more preferable, advantageously in the plastic product demoulding.

As another kind of preferred implementation of the present utility model, the porch of described sidepiece air inlet is provided with Facilitate the avoiding hollow groove of air inlet.

Above-mentioned preferred version is used to provide the benefit that: convenient gas enters pin from sidepiece air inlet Gap between body and die ontology, vacuum breaker effect is more preferable.

As another kind of preferred implementation of the present utility model, described pin body is cylindrical or prism Shape, described spacing chuck is in the round pie corresponding with described pin body or polygon pie.

Above-mentioned preferred version is used to provide the benefit that: not only production and processing is simple, and facilitates operation to make With.

As another kind of preferred implementation of the present utility model, described pin body and described spacing chuck Junction be positioned at the center, upper surface of described spacing chuck.

Above-mentioned preferred version is used to provide the benefit that: to operate with convenient.

As another kind of preferred implementation of the present utility model, described vacuum breaker pin is rivet-like.

Above-mentioned preferred version is used to provide the benefit that: not only production and processing is simpler, and more square Just operate with.

Accompanying drawing explanation

Fig. 1 is the structural representation of prior art products side section；

Fig. 2 is the structural representation of a kind of scheme of this utility model product side section；

Fig. 3 is the structural representation that in Fig. 2, product overlooks face；

Fig. 4 is the perspective view of a kind of scheme of vacuum breaker pin in this utility model；

Fig. 5 is the structural representation of vacuum breaker pin side section in Fig. 4；

In accompanying drawing, the list of parts representated by each label is as follows:

1, die ontology, 2, die cavity, 3, core, 4, vacuum breaker pin, 5, spacing chuck, 6, Pin body, 7, venthole, 8, bottom inflow hole, 9, first annular groove, 10, sidepiece air inlet, 11, the second cannelure, 12, connectivity slot.

Detailed description of the invention

Being described principle of the present utility model and feature below in conjunction with accompanying drawing, example is served only for solving Release this utility model, be not intended to limit scope of the present utility model.

Embodiment

As Figure 2-Figure 5, a kind of sidepiece air inlet vacuum breaker formula thin-wall injection molding die, it includes mould Tool body 1 and vacuum breaker pin 4, the side of described die ontology 1 is provided with the die cavity for injection mo(u)lding 2 and core 3, described core 3 is positioned at described die cavity 2, and described vacuum breaker pin 4 includes limiting card Platform 5 and pin body 6, the bottom of described pin body 6 is fixing with the top of described spacing chuck 5 to be connected Connecing or one-body molded, the sectional area of described pin body 6 is less than the sectional area of described spacing chuck 5；

The bottom of described die ontology 1 is provided with the installing hole corresponding with described vacuum breaker pin 4, described peace Described core 3 is vertically run through in dress hole, and described vacuum breaker pin 4 vertically inserts in described installing hole, and leads to Cross described spacing chuck 5 to fix with described installing hole, the top end face of described pin body 6 and described type The top end face of core 3 is concordant, and the sidepiece of described die ontology 1 is provided with sidepiece air inlet 10, described sidepiece Air inlet 10 extends inwardly at described pin body 6, and is connected with the bottom of described installing hole, The porch of described sidepiece air inlet 10 is preferably provided the avoiding hollow groove 13 facilitating air inlet.

This utility model product has only to vertically insert at die ontology 1 end vacuum breaker pin 4 in use The installing hole in portion, and by spacing chuck 5, vacuum breaker pin 4 is stuck in installing hole location, to ensure Pin body 6 top end face is concordant with the top end face of core 3, and such air-flow can directly enter from sidepiece Pore 10 flows into the gap between pin body 6 bottom and die ontology 1, then flows to pin body 6 Top and die ontology 1 between gap, then from gap row to the top of core 3, after making molding Plastic smooth break away from moulds body 1.

The surrounding sidewall of described pin body 6 bottom is preferably provided the second cannelure 11, and makes described sidepiece Air inlet 10 is connected with described second cannelure 11, and convenient air-flow flows from sidepiece air inlet 10 Enter the gap between pin body 1 bottom and die ontology 1, then flow to pin body 6 top and mould Gap between body 1, auxiliary vacuum breaker effect is more preferable, advantageously in the plastic product demoulding；

The surrounding sidewall on described pin body 6 top is preferably provided first annular groove 9, meanwhile, described edge The described first annular groove 9 of vertically arranged connection and described second cannelure 11 on the sidewall of pin body 6 Connectivity slot 12, so can make from sidepiece air inlet 10 enter air-flow directly through the second cannelure 11, Connectivity slot 12, first annular groove 9, between pin body 6 top and die ontology 1 Gap, auxiliary vacuum breaker effect is more preferable, advantageously in the plastic product demoulding.

The top of described pin body 6 is preferably provided the venthole 7 extended transversely through, described spacing chuck 5 Bottom bottom inflow hole 8 is set, described bottom inflow hole 8 through described spacing chuck 5 and is vertically prolonged Extend in described pin body 6 until being connected with described venthole 7, such air-flow be possible not only to first from Sidepiece air inlet 10 flows into the gap between pin body 6 bottom and die ontology 1, then flows to pin Gap between body 6 top and die ontology 1, it is also possible to directly flow into pin from bottom inflow hole 8 Gap between body 6 top and die ontology 1, then from gap row to the top of core 3, multiple Intake method with the use of, air inflow is more, and vacuum breaker effect is more preferable, advantageously takes off in plastic product Mould；If making described venthole 7 be connected with described first annular groove 9, then air-flow is from bottom inflow hole 8 Flow into the gap between pin body 6 top and die ontology 1 convenient.

The cross sectional shape of described connectivity slot 12, described first annular groove 9 and described second cannelure 11 is Good V-shaped, " u "-shaped or circular arc etc.；Described pin body 6 can cylindrical or prism-shaped Etc. shape, described spacing chuck 5 can be in the round pie corresponding with described pin body 6 or polygon cake Shape, described pin body 6 is fixing with described spacing chuck 5 to be connected or one-body molded, and described pin is originally The junction of body 6 and described spacing chuck 5 is preferably located at the center, upper surface of described spacing chuck 5, If described vacuum breaker pin 4 is in rivet-like, then effect is more preferable.

This utility model product can directly use, it is also possible to horizontal use, inversion use or tilt to use.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all Within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, all Within protection domain of the present utility model should be included in.

Claims

1. a sidepiece air inlet vacuum breaker formula thin-wall injection molding die, it includes die ontology (1), The upper end of described die ontology (1) is provided with the die cavity (2) for injection mo(u)lding and core (3), institute State core (3) and be positioned at described die cavity (2), it is characterised in that it also includes vacuum breaker pin (4), Described vacuum breaker pin (4) includes spacing chuck (5) and pin body (6), described pin body (6) bottom is fixing with the top of described spacing chuck (5) to be connected or one-body molded, and described pin is originally The sectional area of body (6) is less than the sectional area of described spacing chuck (5), described die ontology (1) Bottom is provided with the installing hole corresponding with described vacuum breaker pin (4), and described installing hole vertically runs through described Core (3), described vacuum breaker pin (4) is vertically inserted in described installing hole, and is passed through described spacing Chuck (5) is fixed with described installing hole, the top end face of described pin body (6) and described core (3) Top end face concordant, the sidepiece of described die ontology (1) is provided with sidepiece air inlet (10), described Sidepiece air inlet (10) extends inwardly to described pin body (6) place, and with under described installing hole Portion is connected.

Sidepiece air inlet vacuum breaker formula thin-wall injection molding die the most according to claim 1, it is special Levying and be, the surrounding sidewall of described pin body (6) bottom is provided with the second cannelure (11), institute State sidepiece air inlet (10) to be connected with described second cannelure (11).

Sidepiece air inlet vacuum breaker formula thin-wall injection molding die the most according to claim 2, it is special Levying and be, the surrounding sidewall on described pin body (6) top is provided with first annular groove (9), described edge Described first annular groove (9) and described second cannelure vertically it is communicated with on the sidewall of pin body (6) (11) connectivity slot (12).

Sidepiece air inlet vacuum breaker formula thin-wall injection molding die the most according to claim 3, it is special Levy and be, described connectivity slot (12), described first annular groove (9) and described second cannelure (11) Cross sectional shape is V-shaped, " u "-shaped or circular arc.

Sidepiece air inlet vacuum breaker formula thin-wall injection molding die the most according to claim 3, it is special Levying and be, the top of described pin body (6) is provided with the venthole (7) extended transversely through, described spacing The bottom of chuck (5) is provided with bottom inflow hole (8), and described bottom inflow hole (8) passes described limit Position chuck (5) and vertically extending to described pin body (6) interior until with described venthole (7) phase Connection.

Sidepiece air inlet vacuum breaker formula thin-wall injection molding die the most according to claim 5, it is special Levying and be, described venthole (7) is connected with described first annular groove (9).

Sidepiece air inlet vacuum breaker formula thin-wall injection molding die the most according to claim 1, it is special Levying and be, the porch of described sidepiece air inlet (11) is provided with the avoiding hollow groove (13) facilitating air inlet.

8. according to the sidepiece air inlet vacuum breaker formula thin-walled injection moulding molding according to any one of claim 1-7 Mould, it is characterised in that described pin body (6) is cylindrical or prism-shaped, described spacing chuck (5) in the round pie corresponding with described pin body (6) or polygon pie.

Sidepiece air inlet vacuum breaker formula thin-wall injection molding die the most according to claim 8, it is special Levying and be, described pin body (6) is positioned at described limiting card with the junction of described spacing chuck (5) The center, upper surface of platform (5).

Sidepiece air inlet vacuum breaker formula thin-wall injection molding die the most according to claim 8, it is special Levying and be, described vacuum breaker pin (4) is in rivet-like.