CN2900136Y

CN2900136Y - Running gate structure

Info

Publication number: CN2900136Y
Application number: CN 200620054129
Authority: CN
Inventors: 张凯佳; 方固东; 莫荣源
Original assignee: Mitac Precision Technology Shunde Ltd
Current assignee: Mitac Precision Technology Shunde Ltd
Priority date: 2006-01-20
Filing date: 2006-01-20
Publication date: 2007-05-16
Anticipated expiration: 2016-01-20

Abstract

The utility model discloses a pouring gate structure, which mainly comprises a sleeve and an inlaid pin. Wherein, one end of the sleeve is positioned on the upper liftout plate and its another end is propped up to the finished product during the closing of mould and is applied to prop out the finished product during the opening of the mould; the inlaid pin passes through the sleeve; one end of the inlaid pin is provided with the taper shape; during the closing of mould, the taper end passes through the finished product and the pouring gate and is positioned in the pouring passage; the other end of the inlaid pin passes through the lower liftout plate and is positioned on the fixing plate. Besides, during the glue injection, the configuration of the inlaid pin can enhance the exhaust of air and prevent the producing of bubble in the glue passage, thus protecting the inlaid pin from being broken during the opening of mould. The utility model has the advantages of simple structure, easy realization and high practical value.

Description

Pouring gate structure

Technical field

The utility model relates to a kind of pouring gate structure, particularly relates to a kind of pouring gate structure at cast gate place pin.

Background technology

At present, at transparent big surface plate class plastic cement part, for fear of because of weld bond and the uneven aberration problem that produces of material temperature, mostly the designer is that the employing cold pouring channel directly advances the mode of glue a little louder when designing mould.Please refer to and Figure 1 shows that existing pouring gate structure, during injecting glue, plastic cement enters running channel 102 from gum-injecting port 101, finished product 104 by plastic cement from cast gate 103 injection mouldings in mould.

Though aforesaid way has been avoided because of weld bond and the uneven aberration problem that produces of material temperature, but under this kind mode, because running channel 102 is blocked up near glue position, cast gate 103 place, plastic cement can be easy to produce bubble when cooling, and because the sticking to mould power of plastic cement, and when the mould die sinking, break at generation bubble place easily, thereby cause and to put into production.

Summary of the invention

Main purpose of the present utility model is to provide a kind of pouring gate structure, and it can strengthen exhaust when injecting glue, is producing bubble near the cast gate place when avoiding injecting glue, and can guarantee that plastic cement is not broken when die sinking.

To achieve these goals, the utility model has adopted following technical proposals:

This pouring gate structure comprises the gate bush that is arranged in the die, and an end of this gate bush is circular-arc and is provided with the sprue gate at this circular arc central part place, be connected with the sprue gate and in be located at a running channel arranged in the gate bush, and the other end of this running channel is a cast gate; And this pouring gate structure comprises that also an end is fixed in the sleeve of upper ejector plate.In addition, wear a pin in described sleeve, and this pin that end of being the vertebra shape wears finished product and cast gate and place running channel, its other end then is to keep away the hole to wear down liftout plate and be fixed in fixed head; When the injecting glue, when plastic cement flowed down from annotating cast gate, described pin can make the glue position attenuation near the cast gate place with order, and was unlikely to because blocked uply cause producing bubble.

Pouring gate structure described in the utility model is compared with existing pouring gate structure, and it is simple in structure, only the common thimble in the original structure need be replaced with a pin, and as long as its end that is the vertebra shape is broken through finished product places running channel, has practical value.

Description of drawings

Fig. 1 is existing pouring gate structure schematic diagram;

Fig. 2 is a pouring gate structure schematic diagram described in the utility model;

Fig. 3 is a pouring gate structure overall schematic described in the utility model.

The specific embodiment

Come invention is elaborated below in conjunction with accompanying drawing and specific embodiment.

Pouring gate structure described in the utility model, referring to figs. 2 and 3 shown in.Wherein, described gate bush 100 is for being located in first die 303 and first die 304, the one end is circular-arc and is provided with a gum-injecting port 101 at this circular arc central part place, so that the discharge nozzle (not shown) of ejaculator platform be fit to this gate bush and be inserted in this gum-injecting port 101; And in this described gate bush 100, an end is located in the gate bush 100 be connected also with gum-injecting port 101 in, is provided with a running channel 102.In addition, the other end of this described running channel 102 is a cast gate 103, and described cast gate 103 be with first die 304 and second die 305 between the finished product molding space be connected.

In addition, consult again shown in Figure 2, and and in conjunction with shown in Figure 3, described pin 200 in sleeve 105, its that end that is the vertebra shape places running channel 102 for passing cast gate 103, the other end then is to be fixed on the fixed head 302 for passing down liftout plate 301.Described sleeve 105 1 ends are for being fixed on the upper ejector plate 300, and the other end then contacts when matched moulds in finished product 104, during die sinking then in order to pushing-off product 104.

Refer again to shown in Figure 3ly, it is a pouring gate structure overall schematic described in the utility model.During injecting glue, plastic cement is injected into the running channel 102 by gum-injecting port 101 from the discharge nozzle that penetrates board, and is injected into molding space shaping finished product 104 between first die 304 and second die 305 by cast gate 103.And in injection process, because the setting up of pin 200 increased exhaust, plastic cement is compared and will be approached in glue road 102 and near under the glue position of cast gate 103 positions and the prior art situation, can not produce bubble, more can not broken when die sinking.

Claims

1. pouring gate structure, comprise the gate bush that is arranged in the die, one end of this gate bush is circular-arc and is provided with the sprue gate at this circular arc central part place, be connected with the sprue gate and in be located at a running channel arranged in the gate bush, and the other end of this running channel is a cast gate; And this pouring gate structure comprises that also an end is fixed in the sleeve of upper ejector plate; It is characterized in that: wear a pin in described sleeve, this pin one end is the vertebra shape, and this end places running channel by described cast gate; Its other end then is to keep away the hole to pass down liftout plate and be fixed on the fixed head.