CN201544422U

CN201544422U - Injection molding stub bar disconnecting device

Info

Publication number: CN201544422U
Application number: CN2010201283306U
Authority: CN
Inventors: 简延吉
Original assignee: YISHENG ELECTRIC WIRE PLASTIC (KUNSHAN) CO Ltd
Current assignee: YISHENG ELECTRIC WIRE PLASTIC (KUNSHAN) CO Ltd
Priority date: 2010-03-11
Filing date: 2010-03-11
Publication date: 2010-08-11
Anticipated expiration: 2020-03-11

Abstract

The utility model relates to an injection molding stub bar disconnecting device, including a stub bar cutting insert and its shifting block, wherein the stub bar cutting insert is inlayed in the injection mould cavity Insert, a flow passage for generating the injection molding stub bar is provided on the upper end-face of the stub bar cutting insert, and the stub bar cutting insert is rotatable relative to the cavity Insert; the shifting block is inlayed in the core Insert of the injection mould, a boss is provided on the shifting block, and at least the boss protruding the matching surface of the cavity insert and the core insert. A sliding chute with inner slope periphery rotating along the stub bar cutting insert relative to the cavity Insert is provided on at least one side of the wall of the stub bar cutting insert, the boss is matched with the sliding chute, and is ensured that the boss shifts upwards and downwards along the sliding chute and drives the cutting insert to rotate relative to the core insert when the stub bar cutting insert shifting block shifts up and down. By the action of the shifting block to the slope channel, the shifting block drives the stub bar cutting insert to rotate in the core inset when the shifting block ascends along the cavity insert during die sinking, to further cut off the stub bar in the flow passage and to realize the automatic pruning to the stub bar during pattern drawing.

Description

A kind of injection moulding stub bar shearing device

Technical field

The utility model is used for molded product and injection moulding stub bar are cut off a kind of injection moulding stub bar shearing device that separates when relating to injecting products production.

Background technology

In injection moulding is produced, the plastic products of ejection formation do not have the hot glue road or three template die persons all need manually to prune its stub bar, because the output of injecting products is generally all bigger, thereby the artificial operating type of pruning certainly will influence production efficiency, makes that still the cut-out of stub bar can't be pruned link in the very high injection moulding production process of automaticity include in the automated procedures; Though the pruning cut-out meeting of stub bar is had different required precisions according to the appearance requirement of actual injecting products, if but the goods of institute's injection mo(u)lding are non-outward appearance part, if then can behind die forming, automatically this product be separated with stub bar and will save numerous manpowers and time, thereby reach the effect that reduces cost, make this finished product have more competitiveness.

And industry does not see that Related product or technology occur at present.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of injection moulding stub bar shearing device, it can realize the automatic cut-out of stub bar and injection molding product when molding, thereby give up extra artificial pruning operation to stub bar, improve the automatization level of producing greatly, and improved production cost.

Its technical problem to be solved can be implemented by the following technical programs.

A kind of injection moulding stub bar shearing device comprises:

Stub bar cuts off into son; Described stub bar cuts off son and is embedded in the mother module core of injection mould, and the upper surface that this stub bar cuts off into son offers the runner that produces described injection moulding stub bar, and described stub bar cuts off into son rotatable with respect to described mother module core; And

Stub bar cuts off into sub-shifting block; Described stub bar cuts off in the male model benevolence that sub-shifting block is embedded at injection mould, and this stub bar cuts off sub-shifting block and is provided with boss, and keeps described at least boss to stretch out the mating surface of described male model benevolence and mother module core;

Wherein, described stub bar cuts off sub at least one side perisporium and offers along stub bar and cut off that son rotates in the formed periphery with respect to mother module core and the chute established, described boss and described chute match when merge keeping described stub bar to cut off being shifted up and down into sub-shifting block, and described boss is along described chute upper and lower displacement and drive described stub bar and cut off into son and rotate with respect to described mother module core.

As the further improvement of the technical program, it is cylindrical that described stub bar cuts off into son, and described chute is located on the outer circumference surface of cylindrical column.

As the further improvement of the technical program, described stub bar cuts off into the relative both sides of sub-perisporium and is equipped with described chute.

Adopt the injection moulding stub bar shearing device of this technical scheme, by cutting off oblique conduit is set on the son at stub bar, and through being embedded the effect of shifting block together with mother module core, when making the injection mould die sinking, shifting block rotates in male model benevolence along with drive stub bar in the process of mother module core rising cuts off son, and then cut off stub bar and cut off into residual stub bar in the runner of son upper end, when having realized molding to the automatic pruning of stub bar.

Description of drawings

Below in conjunction with accompanying drawing the specific embodiment of the present utility model being done one describes in detail.

Fig. 1 is a STRUCTURE DECOMPOSITION schematic diagram of the present utility model;

View of the present utility model when Fig. 2 opens for injection mould;

Fig. 3 is the partial enlarged drawing at B place among Fig. 2;

View of the present utility model when Fig. 4 is the injection mould matched moulds;

Fig. 5 is the partial enlarged drawing at A place among Fig. 4;

Fig. 6 for the injection moulding stub bar when not cutting off stub bar and product concern schematic diagram;

Fig. 7 cuts off the schematic diagram that concerns of back stub bar and product for the injection moulding stub bar.

Among the figure: 11--mother module core 12--male model benevolence 111--positioning chamber 21--stub bar cuts off into sub-shifting block (abbreviation shifting block) 211--boss 121--positioning chamber 1211--locating slot 3--product 31--stub bar 4--stub bar and cuts off the chute into son (son gone in abbreviation) 41--runner 42--

The specific embodiment

As Fig. 1 to injection moulding stub bar shearing device shown in Figure 7, cylindrical stub bar cuts off in son 4 positioning chambers 121 that are embedded on the male model benevolence 12 of injection mould, the upper end that stub bar cuts off into son 4 offers runner 41, the two ends of runner 41 connect the mold cavity of injecting products 3, connect as one without the product 3 of the stub bar 31 that cuts off with two ends after injection moulding is finished.

Stub bar cuts off the chute 42 that offers inclination on the circumferential wall of both sides, sub 4 front and back, and boss 211 width that the width of chute 42 and stub bar cut off into sub-shifting block 21 lower ends roughly adapt; And former and later two shifting blocks 21 are embedded in the positioning chamber of being offered on the mother module core 11 of injection mould 111; Wherein boss 211 stretches out downwards, after guaranteeing male model benevolence 12 and mother module core 11 matched moulds, the boss 211 that is embedded the shifting block 21 in mother module core 11 can insert stub bar and cut off into certain depth in the chute 42 of son 4, and the part of shifting block 21 just in time inlay card in locating slot 1211.

Because chute 42 has certain gradient, therefore after injection moulding is finished, in the die sinking process, be in the process of mother module core 11 risings, the shifting block 21 that is stabilized in mother module core 11 positioning chambers 111 also together rises, and then drives the inwall of boss 211 extruding chutes 42, impels whole stub bar to cut off into son 4 and rotates in positioning chamber 121, so the stub bar 31 that will link to each other with product 3 twists off, realize the purpose of cutting in rotation.

Its concrete effect and working mechanism are as follows:

1, stub bar cuts off into the son 4 male model benevolence 12 of packing into, and going into son 4 needs to keep along sliding fit with male model benevolence 12;

2, stub bar cuts off into sub-shifting block 21 mother module core 11 of packing into, and shifting block 21 need be made anti-rotation with mother module core 11 and handle;

3, shifting block 21 leading portion small boss 211 structures are inserted the male model stub bar and are cut off in the sub 4 both sides gradient chutes 42 during the mould matched moulds, make it rest on design and enter the glue position;

4, moulding finishes the back mold open, because gradient chute 42 matching relationships driving stub bar cuts off into son 4 rotations, product 3 is separated with runner in the master mold shifting block 21 die sinking processes; Reach the unmanned stub bar of excision automatically function;

5, repeat the action of the 3rd step, carry out moulding next time.

This injection moulding stub bar shearing device imports in the injection mold by cutting off structure, drives one and be rotated into son stub bar is separated with finished product when mold open, and stub bar and finished product are kept in the center again and be able to penetrate the state of charging behind the mould matched moulds.By be made into the whole series go into son make this device structurally be easy to the assembling; This device can reduce manpower, shortens the plastic friendship phase, reduce cost, and is convenient to maintenance.

Stub bar was connected with product after it had solved the traditional moulds moulding, needed to adopt the back processing mode that stub bar is separated with product, the deficiency of waste of manpower and increase expense; Adopt this device product behind mould molding to separate, can realize the unattended duty fully-automatic production, save a large amount of manpowers and correlative charges with stub bar.

Claims

1. an injection moulding stub bar shearing device is characterized in that, comprising:

2. injection moulding stub bar shearing device according to claim 1 is characterized in that, it is cylindrical that described stub bar cuts off into son, and described chute is located on the outer circumference surface of cylindrical column.

3. injection moulding stub bar shearing device according to claim 1 and 2 is characterized in that described stub bar cuts off into the relative both sides of sub-perisporium and is equipped with described chute.