CN203713002U

CN203713002U - Ejector pin structure of mould

Info

Publication number: CN203713002U
Application number: CN201320848360.8U
Authority: CN
Inventors: 谷曌曌
Original assignee: Mitac Precision Technology Kunshan Ltd
Current assignee: Mitac Precision Technology Kunshan Ltd
Priority date: 2013-12-20
Filing date: 2013-12-20
Publication date: 2014-07-16
Anticipated expiration: 2023-12-20

Abstract

The utility model discloses an ejector pin structure of a mould. The structure comprises a cylindrical ejector pin rod body, a material pull head which is arranged in the front of the ejector pin rod body and provided with a hooked gap and a boss arranged in the front of the ejector pin rod body, wherein the diameter of the cross section of the boss is smaller than the diameter of the cross section of the ejector pin rod body and the boss is arranged on the extending position of the center of the ejector pin rod body. The ejector pin structure of the mould, disclosed by the utility model, has the advantages that the requirement of pulling condensate materials in a main runner out from the main runner is met and the balance needed in the process of ejecting the condensate materials is guaranteed.

Description

The thimble structure of mould

[technical field]

The utility model relates to a kind of mould structure, is specifically related to a kind of thimble structure of mould.

[background technology]

Thimble is to eject or the mould accessory of effect such as firmly for playing, and it is very extensive that thimble is applied in mould, and for example, thimble from mold ejection, makes product or runner separated with mould etc. product or runner.

In plastic mould, fill with mouth and claim again sprue bush, filling with mouth is to allow the plastic material of melting from the nozzle of injection machine, be injected into the part of mould inside.In order to reduce the size of die holder and forming machine, save die cost, product is not misplaced, thimble can be located to the below of filling with mouth, therefore the requirement for thimble has just improved.When mould die sinking, need thimble the condensation material in sprue should be pulled out from sprue, guarantee again the balance when condensation material ejects.

Refer to shown in Fig. 1 and Fig. 2, what in Fig. 1, first thimble 10 one end of prior art had a hook breach draws stub bar 101, and described the first thimble 10 only can be pulled out the condensation material in sprue from sprue, but can not guarantee the balance when ejecting; In Fig. 2, second thimble 20 one end of prior art have boss 201, and described the second thimble 20 can guarantee the balance when ejecting, but the condensation material in sprue can not be pulled out from sprue.

In view of this, be necessary to develop in fact a kind of thimble structure of novel mould, to meet the above-mentioned requirement that condensation material in sprue should be pulled out from sprue, can guarantee balance required when ejecting condensation material again.

[summary of the invention]

Therefore, the purpose of this utility model is to provide a kind of thimble structure of mould, and the thimble structure of this mould can be pulled out the condensation material in sprue from sprue, can guarantee balance required when ejecting condensation material again.

In order to achieve the above object, the thimble structure of mould of the present utility model, it comprises:

The thimble body of rod, it is cylindric;

Draw stub bar, it is located at the front portion of the described thimble body of rod, described in draw stub bar to there is hook breach;

Boss, it is located at the front portion of the described thimble body of rod, and the cross-sectional diameter of described boss is less than the cross-sectional diameter of the described thimble body of rod, and described boss is located on the extended position at described thimble body of rod center.

Preferably, described hook breach is C type.

Preferably, described boss is column, and the cross-sectional diameter of described boss becomes large by boss gradually to thimble body of rod direction.

Compared to prior art, the thimble structure of mould of the present utility model, it had both possessed the stub bar that draws of hook breach, there is again boss, the stub bar that draws with hook breach can be pulled out the condensation material in sprue from sprue, boss can guarantee balance when ejecting condensation material, has met the requirement that the condensation material in sprue should be pulled out from sprue, can guarantee balance required when ejecting condensation material again.

[accompanying drawing explanation]

Fig. 1 illustrates the schematic diagram of the first thimble in prior art.

Fig. 2 illustrates the schematic diagram of the second thimble in prior art.

Fig. 3 illustrates the schematic diagram of the thimble structure of the utility model mould.

The schematic diagram of the thimble structure that Fig. 4 illustrates the utility model mould in mould.

[specific embodiment]

Refer to shown in Fig. 3 and Fig. 4, it has illustrated respectively the schematic diagram of thimble structure and the schematic diagram of the thimble structure of the utility model mould in mould of the utility model mould.

In the present embodiment, the thimble structure 30 of mould of the present utility model, it comprises:

The thimble body of rod 301, it is cylindric, and the afterbody of the described thimble body of rod 301 is fixed on the liftout plate of mould;

Draw stub bar 302, it is located at the front portion of the described thimble body of rod 301, described in draw stub bar 302 to there is hook breach 303, described hook breach 303 is for catching on the condensation material 40 of sprue;

Boss 304, it is located at the front portion of the described thimble body of rod 301, and the cross-sectional diameter of described boss 304 is less than the cross-sectional diameter of the described thimble body of rod 301, and described boss 304 is located on the extended position at the described thimble body of rod 301 centers.

Wherein, described hook breach 303 is C type, and the parameters such as the angle that described hook breach 303 is offered and the degree of depth are determined according to actual conditions.

Wherein, described boss 304 is column, and the cross-sectional diameter of described boss 304 becomes large by boss 304 gradually to the thimble body of rod 301 directions.

The thimble structure 30 of described mould, what it had both had a hook breach 303 draws stub bar 302, have again boss 304, the stub bar 302 that draws with hook breach 303 can be pulled out the condensation material 40 in sprue from sprue, and boss 304 can guarantee balance when ejecting condensation material 40.

Refer to shown in Fig. 4, when mould die sinking, male model plate and the caster of mould separate, first the thimble structure 30 of described mould pulls out the condensation material 40 in sprue from sprue, then under the effect of the liftout plate of mould, the thimble structure 30 of described mould by condensation material 40 from mold ejection.

In sum, the thimble structure 30 of mould of the present utility model has overcome the defect of two kinds of conventional thimbles, has met the requirement that the condensation material 40 in sprue should be pulled out from sprue, has guaranteed again balance required when ejecting condensation material 40.

Claims

1. a thimble structure for mould, is characterized in that, the thimble structure of described mould comprises:

The thimble body of rod, it is cylindric;

2. the thimble structure of mould according to claim 1, is characterized in that, described hook breach is C type.

3. the thimble structure of mould according to claim 1, is characterized in that, described boss is column, and the cross-sectional diameter of described boss becomes large by boss gradually to thimble body of rod direction.