CN104772870A

CN104772870A - Gas discharge structure

Info

Publication number: CN104772870A
Application number: CN201410012092.5A
Authority: CN
Inventors: 白绒
Original assignee: Mitac Precision Technology Kunshan Ltd
Current assignee: Mitac Precision Technology Kunshan Ltd
Priority date: 2014-01-10
Filing date: 2014-01-10
Publication date: 2015-07-15

Abstract

The present invention discloses a gas discharge structure, which is used in a mold and comprises: a plurality of first gas discharge inserts connected in series; a second gas discharge insert group, wherein the second gas discharge insert group is insertedly arranged between the plurality of the first gas discharge inserts and is provided with two second gas discharge inserts, and the opposite surfaces of the two second gas discharge inserts have the inclination; and a third gas discharge insert insertedly arranged between the two second gas discharge inserts of the second gas discharge insert group, wherein the both sides of the third gas discharge insert have the corresponding inclination for close combination of the both sides and the two second gas discharge inserts. According to the present invention, the first gas discharge inserts and the second gas discharge inserts are arranged, then the third gas discharge insert is arranged, and the gap between various inserts can be adjusted through the inclination between the second gas discharge insert and the third gas discharge insert so as to avoid the generation of the burrs, such that the gas discharge insert is not required to be reproduced because the fitter has the adjustable space when the burr is generated during the mold testing.

Description

Exhaust structure

[technical field]

The present invention relates to a kind of exhaust structure, be specifically related to a kind of exhaust structure be applied in mould.

[background technology]

When injection mo(u)lding plastic parts product, die cavity is made to produce gas along with the injection of melt plastic cement liquid, this gas mainly comprises: air existing in die cavity and running gate system, the moisture contained in plastic raw materials at high temperature evaporates produced steam, and in the gas that under high temperature, plastics produces and plastics, some additive volatilizees the gas produced.When injection moulding, if these gases can not be discharged in time from die cavity, then when shaped article these gases can produce pore, gas line, cavity on the surface of product, burn, the great number of issues such as bubble.

At present, mainly utilize in mould and be vented and be exhausted into son.Please jointly consult Fig. 1, the one that Fig. 1 illustrates prior art is vented into minor structure schematic diagram.

In Fig. 1, the exhaust of prior art enters minor structure and comprises several and be vented into son 10, and these are some is vented and is linked together by alignment pin (not shown) into son 10, and is fixed in mould eventually through screw 11.

But, being mutually connected in series by alignment pin (not shown) into son 10 owing to being vented in this exhaust structure, and each exhaust has machining tolerance into son 10, easily causes in production process the problem of overflow glue and then generation burr after cumulative limit.Because above-mentioned exhaust is fixed into sub 10 finished sizes, the space that pincers worker can not regulate, if therefore die trial time there is the problems such as burr, be then vented into son 10 need reform, cost of idleness.

In view of this, be necessary to provide a kind of novel exhaust structure, to solve the problems referred to above in existing exhaust structure in fact.

[summary of the invention]

Therefore, the object of this invention is to provide a kind of exhaust structure, this exhaust structure can solve to be vented and fix into sub-finished size, occur during die trial burr then pincers worker without adjustable space, be vented and need into son the problem reformed.

In order to achieve the above object, exhaust structure of the present invention, is applied in mould, and this exhaust structure comprises:

Several first are vented into son, these several first be vented and be connected in series into son;

Second is vented into subgroup, and this second is vented subgroup and is inserted in described several and first is vented between son, and this second is vented and has 2 second into subgroup and be vented into son, and this 2 second is vented and has gradient into sub-opposite face;

3rd is vented into son, be inserted in this second be vented subgroup this 2 second be vented between son, the 3rd is vented to have into sub-both sides and second is vented into sub corresponding gradient of combining closely with this.

Optionally, the described first deflation area be vented into son is rectangular.

Optionally, the described second deflation area be vented into son is at right angles trapezoidal.

Optionally, the described 3rd deflation area be vented into son is isosceles trapezoid.

Optionally, described each exhaust is connected by alignment pin into son.

Optionally, described exhaust structure also has the first screw, and described first screw is two, and described first screw is fixed described first and is vented son on mould.

Optionally, described exhaust structure also has the second screw, and described second screw is fixed the described 3rd and is vented son on mould.

Optionally, described second be vented and be vented into the gradient that has of opposite face of son and the angle of vertical direction into 2 second of subgroup to be 5 ~ 10 degree, to be preferably 5 degree.

Compared to prior art, exhaust structure of the present invention, first be vented described first and be vented into son installation into son, second, installing the described 3rd afterwards is again vented into son, be vented son and the 3rd by second and be vented gradient between son, the gap respectively entered between son can be regulated, thus avoid the generation of burr.Visible, occur burr during die trial, pincers worker, owing to having adjustable space, is therefore vented into son without the need to reforming.

[accompanying drawing explanation]

The one that Fig. 1 illustrates prior art is vented into minor structure schematic diagram.

Fig. 2 illustrates the structural representation of a preferred embodiment of exhaust structure of the present invention.

[detailed description of the invention]

Refer to shown in Fig. 2, Fig. 2 illustrates the structural representation of a preferred embodiment of exhaust structure of the present invention.

Several first are vented into son 100, these several first be vented and 100 be connected in series into son;

Second is vented into subgroup, and this second is vented subgroup and is inserted in described several and first is vented between son 100, and this second is vented and has 2 second into subgroup and be vented into son 101, and this 2 second is vented and has gradient into sub 101 opposite faces;

3rd is vented into son 102, be inserted in this second be vented subgroup this 2 second be vented between son 101, the 3rd is vented to have into sub 102 both sides and second is vented into sub 101 corresponding gradients of combining closely with this.

Wherein, the described first deflation area be vented into son 100 can be rectangular, conveniently installs arrangement; Described second deflation area be vented into son 101 is at right angles trapezoidal, and outside and described first is vented into son 100 corresponding, and inner side and the described 3rd is vented into son 102 corresponding; Described 3rd deflation area be vented into son 102 is isosceles trapezoid, and both sides are vented the inner side be vented into son 101 into 2 second of son respectively with described second corresponding.

Wherein, described each exhaust can be connected by alignment pin (not shown) into son.

Wherein, described exhaust structure can also have the first screw 103, and described first screw 103 is such as two, and described first screw 103 is fixed described first and is vented son 100 on mould; Described exhaust structure can also have the second screw 104, and described second screw 104 is fixed the described 3rd and is vented son 102 on mould.

Wherein, described second is vented to be vented into 2 second of subgroup and can be 5 ~ 10 degree into the gradient that has of opposite face of son 101 and the angle of vertical direction, is preferably 5 degree, so can smooth and easy insertion and adjustment.

Compared to prior art, exhaust structure of the present invention, first be vented described first and be vented into son 101 installation into son 100, second, installing the described 3rd afterwards is again vented into son 102, by second be vented son 101 and the 3rd be vented son 102 between gradient, the gap respectively entered between son can be regulated, thus avoid the generation of burr.Visible, occur burr during die trial, pincers worker, owing to having adjustable space, is therefore vented into son without the need to reforming.

It is noted that the invention is not restricted to above-mentioned embodiment, any simple modification that any those skilled in the art do above-described embodiment based on technical solution of the present invention, equivalent variations and modification, all fall within the scope of protection of the present invention.

Claims

1. an exhaust structure, is applied in mould, it is characterized in that, this exhaust structure comprises:

2. exhaust structure as claimed in claim 1, is characterized in that, the described first deflation area be vented into son is rectangular.

3. exhaust structure as claimed in claim 1, is characterized in that, the described second deflation area be vented into son is at right angles trapezoidal.

4. exhaust structure as claimed in claim 1, is characterized in that, the described 3rd deflation area be vented into son is isosceles trapezoid.

5. the exhaust structure according to any one of claim 1-4, is characterized in that, described each exhaust is connected by alignment pin into son.

6. the exhaust structure according to any one of claim 1-4, is characterized in that, it is characterized in that, described exhaust structure also has the first screw, and described first screw is two, and described first screw is fixed described first and is vented son on mould.

7. the exhaust structure according to any one of claim 1-4, is characterized in that, described exhaust structure also has the second screw, and described second screw is fixed the described 3rd and is vented son on mould.

8. the exhaust structure according to any one of claim 1-4, is characterized in that, described second is vented and is vented into subnumber equal into first of subgroup both sides.

9. the exhaust structure according to any one of claim 1-4, is characterized in that, described second is vented that to be vented into the gradient that has of opposite face of son and the angle of vertical direction into 2 second of subgroup be 5 ~ 10 degree.

10. exhaust structure as claimed in claim 1, is characterized in that, described second to be vented the angle being vented gradient that the opposite face into son has and vertical direction into 2 second of subgroup be 5 degree.