CN202071300U

CN202071300U - Injection mold core pulling mechanism

Info

Publication number: CN202071300U
Application number: CN2011201490917U
Authority: CN
Inventors: 夏飞行
Original assignee: Yanfeng Visteon Automotive Tooling Co Ltd
Current assignee: Yanfeng Automotive Trim Systems Co Ltd; Yanfeng Automotive Trim Mould Technology Co Ltd
Priority date: 2011-05-11
Filing date: 2011-05-11
Publication date: 2011-12-14
Anticipated expiration: 2021-05-11

Abstract

The utility model relates to an injection mold core pulling mechanism which comprise a first slider and a second slider, wherein the first slider is connected with a first elastic guide rod which is used for guiding the demolding direction or the demolding angle of the first slider, the second slider is connected with a second elastic guide rod which is used for guiding the demolding direction or the demolding angle of the second slider, the second slider is positioned in a sliding cavity in the first slider, the position of the sliding cavity corresponds to that of an reversed plastic part of an injection product in a core pulling direction, and the sliding core pulling distance of the second slider in the sliding cavity is not less than the height of the reversed plastic part. According to the injection mold core pulling mechanism, the demolding of different parts of the product is respectively controlled or avoided by setting core pulling sliders capable of sliding in multiple directions, so that under the condition that glue is shoveled by inverted buckles in the main core pulling direction, the demolding of the whole product can be achieved in virtue of the characteristic of controlling the sliders to displace relatively.

Description

The injection mold core-pulling mechanism

Technical field

The utility model relates to a kind of core-pulling mechanism of injection mold.

Background technology

For the injection mold combined mechanism of loosing core, (meaning of shovel glue just is meant that mechanism and plastic product have the shovel of interference to hinder the product of wounding particularly to be provided with shovel glue in the direction of loosing core in the face of injection mold.The meaning refers on injection mold is loosed core direction working of plastics is arranged herein, and mechanism can wound in motion process and shovel the injured labour product).Loosing core during task of product or shovel glue zone, in the prior art, injection mold adopts two kinds of schemes when direction is provided with shovel glue product or shovel glue zone usually realizing loosing core: (1), core-pulling mechanism get out of the way shovel glue zone as far as possible; (2), change product structure, to avoid the contradiction that existing mold mechanism can't realize.

If adopt first kind of scheme, will cause intensity that institute gets out of the way the product corresponding site that shovels the glue zone a little less than, and easy deformation is if core-pulling mechanism cover half then cost can raise greatly; And adopt second kind of scheme, and promptly can't realize changing product structure owing to mold mechanism, in actual mechanical process, often be difficult to the persuasion client and do like this.

Above-mentioned contradiction mainly shows as at product looses core direction when back-off shovel glue is arranged, and the demoulding of loosing core of product will be affected, and adopts traditional mould structure of loosing core will be difficult to realization.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of and looses core direction when having back-off shovel glue at product, the injection mold core-pulling mechanism of the demoulding that helps loosing core.

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

A kind of injection mold core-pulling mechanism comprises:

First slide block, described first slide block connects the first elastic guide bar, and the described first elastic guide bar is used for guiding the stripping direction or the demoulding angle of described first slide block;

Second slide block, described second slide block connects the second elastic guide bar, and the described second elastic guide bar is used for guiding the stripping direction or the demoulding angle of described second slide block;

Wherein, described second slide block is placed in the slippage cavity of being offered in described first slide block, described second slide block can the relative first slide block slippage in described slippage cavity, described slippage cavity to offer the position corresponding in the position of back-off that direction the has shovel glue of loosing core with the institute injecting products, and keep the slippage of second slide block in the described slippage cavity distance of loosing core to be not less than the height of projection of described back-off shovel glue.

As the further improvement of the technical program, the described second slide block integral body is placed in the slippage chamber of being offered in described first slide block.

Also as the further improvement of the technical program, the described first elastic guide bar elastic guide bar space trend parallels with described the.

Also as the further improvement of the technical program, this mechanism also comprises a releasable interlock drag hook, and one of described interlock drag hook connects described first slide block, and the other end connects the dynamic model portion of mould.

As one of preferred embodiment of the present utility model, this mechanism comprises that also one connects inserted link, and an end of described connection inserted link is connected with second slide block, and the other end inserts in slide opening that first slide block is offered or sliding hole; This connection inserted link is used for connecting first slide block and second slide block and guides both relative displacements.

Adopt the injection mold core-pulling mechanism of technique scheme, by the demoulding that can control or dodge the product different piece respectively along the slide block of loosing core of a plurality of direction slippages is set, and by means of control each slide block movable relatively characteristics, and then realized in the face of the loose core demoulding of direction entire product when having back-off shovel glue of main body.

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 the loose core shovel glue schematic diagram of direction of product in the utility model;

Fig. 2 is the structural representation of this combined mechanism of loosing core;

Fig. 3 is the structural representation of the existing combined mechanism of loosing core;

Fig. 4 is the structural representation of big bullet piece and drag hook position in this combined mechanism of loosing core;

Fig. 5 is the structural representation of submissile piece position in this combined mechanism of loosing core;

Fig. 6 (Fig. 6 a, Fig. 6 b and Fig. 6 c) is this core-pulling mechanism when motion structural change schematic diagram at different sections of loosing core;

---cover half 2---dynamic model 3---big bullet piece 31---cavity 4,41,42---drag hook 5---big bullet piece guide rod 6---big bullet piece spring 7---limited block 8---support bar 9---briquetting 10---submissile piece spring 11---submissile piece guide rod 12---submissile piece 13---product 131---shovel glue 14---demoulding space among the figure: 1

The specific embodiment

For convenience of description, in embodiment of the present utility model, the A direction that ejects directional diagram 1 definition of product, the B direction be the direction of loosing core, the C direction is for shoveling the glue direction of loosing core.

With reference to Fig. 2, Fig. 4 and shown in Figure 5, this combination structure of loosing core is to be combined by the submissile pieces 12 in big bullet piece 3 of 1 cover half and the big bullet piece 3, by die sinking, the submissile piece was along the reverse sync displacement of big bullet piece with angle when big bullet piece ejected cover half, corresponding had displacement submissile piece 12 and cover half 1 then motionless with regard to equaling big bullet piece 3 with cover half 1, behind submissile piece extraction shovel glue zone, big bullet piece and submissile piece synchronous shift extraction are again loosed core greatly and are finished.

Concrete structure is as follows:

Big bullet piece 3 is loosed core through the big bullet piece guide rod 5 guiding demouldings that big bullet piece spring 6 drives,, fix with dynamic model 2 by the big bullet piece 3 of interlock drag hook 4 (comprising 41 and 42 two parts that can discharge).

Big bullet piece 3 has a cavity 31, submissile piece 12 integral body are placed in this cavity 31, and insert in the jack of on big bullet piece 3, being offered or slotting hole by coupled support bar 8, and through its guiding, the control of the submissile piece guide rod 11 under 10 controls of submissile piece spring can be with respect to big bullet piece 3 displacements (slippage) in cavity 31; Submissile piece 12 demoulding that will satisfy shovel glue 131 in the slipping space of cavity 31 needs of loosing core wherein, promptly skidding distance is not less than the height of projection of shovel glue 131; Certainly the position of cavity 31 should adapt with the position of shovel glue 131 when design.One end of submissile piece guide rod 11 and submissile piece 12 are fixing, and the other end is provided with briquetting 9; Big bullet piece guide rod 5 then passes from big bullet piece 3, is provided with limited block 7 in the lower end of big bullet piece guide rod 5 simultaneously.Can by means of support bar 8 when keeping big small slide block to be shifted relatively, also can keep both appropriateness to connect in addition, for example can not come off.

Wherein, submissile piece guide rod 11 and big bullet piece guide rod 5 are used for controlling the direction or the angle of the loosing core of two bullet pieces or the demoulding respectively, and both are arranged in parallel here.

When below with reference to Fig. 6 this injection mold core-pulling mechanism being moved, the changing condition at different structure position describes:

Step 1: shown in Fig. 6 b, when mould when arrow C shovel glue is loosed core direction die sinking 10mm in Fig. 1, cover half 1 transfixion, dynamic model 2 and product 13 are to bottom offset 10mm (i.e. the size variation in the demoulding space 14 between dynamic model 2 and cover half 1), big bullet piece 3 relies on drag hook 4 and big bullet piece spring 6 to drive by big bullet piece guide rod 5 directions and dynamic model 2 synchronous shift, submissile piece 12 relies on submissile piece spring 10 to drive and presses submissile piece guide rod 11 directions and big bullet piece 3 reverse displacements simultaneously, and when running into big bullet piece 3 inwalls, stop, submissile piece 12 and cover half 1 transfixion are extracted C direction back-off on the product 13 (131 demouldings of shovel glue are finished among Fig. 6 b) out thereby finish submissile piece 12 relatively.

Step 2: shown in Fig. 6 c, along the indicated direction of loosing core of arrow B among Fig. 1,14 further become big in demoulding space, for example when mould die sinking 130mm, cover half 1 transfixion, dynamic model 2 and product 13 are to bottom offset 130mm, and big bullet piece spring 6 drivings of

big bullet piece

3 and 12 dependence of submissile piece are run into limited block 7 by big bullet piece guide rod 5 directions and dynamic model 2 synchronous shift and stopped, thus B direction back-off on the big bullet piece 3 extraction products 13; Link up with 4 pairs of dynamic models 2 this moment and remove with the interlock of big bullet piece 3, hook 4 is decomposed into 41 and 42 two parts.

Step 3: mould ejects direction along the product of arrow A among Fig. 1 to be continued to eject product after the die sinking and finishes.Product the 13 whole strippers of loosing core finish.

The above-mentioned core-pulling mechanism that the utility model provides, drive big bullet piece with respect to prior art by 2 springs and replaced 2 group oil cylinders that the cover half oblique top is produced, 2 push pedals, 2 push pedal guide pillars, 4 release links and screw and rubbish nail cost reduced cost dramatically, and stripping result are reliable, simply, be easy to assembling.

Claims

1. injection mold core-pulling mechanism comprises:

Wherein, described second slide block is placed in the slippage cavity of being offered in described first slide block, described slippage cavity to offer the position corresponding in the position of back-off that direction the has shovel glue of loosing core with the institute injecting products, and keep the slippage of second slide block in the described slippage cavity distance of loosing core to be not less than the height of projection of described back-off shovel glue.

2. injection mold core-pulling mechanism according to claim 1 is characterized in that, the described second slide block integral body is placed in the slippage chamber of being offered in described first slide block.

3. injection mold core-pulling mechanism according to claim 1 is characterized in that, the elastic guide bar space trend with described the of the described first elastic guide bar parallels.

4. injection mold core-pulling mechanism according to claim 1 is characterized in that, also comprises a releasable interlock drag hook, and an end of described interlock drag hook connects described first slide block, and the other end connects the dynamic model portion of mould.

5. injection mold core-pulling mechanism according to claim 1 is characterized in that, comprises that also one connects inserted link, and an end of described connection inserted link is connected with second slide block, and the other end inserts in slide opening that first slide block is offered or sliding hole.