CN101347968A

CN101347968A - Improved exhaustion structure

Info

Publication number: CN101347968A
Application number: CNA2007100249300A
Authority: CN
Inventors: 郭康康
Original assignee: Mitac Precision Technology Kunshan Ltd
Current assignee: Mitac Precision Technology Kunshan Ltd
Priority date: 2007-07-16
Filing date: 2007-07-16
Publication date: 2009-01-21

Abstract

The invention discloses an improved exhaust structure which is suitable for a mould structure. The mould comprises a mould core, the surface of which depresses and a mould cavity is formed, wherein, the exhaust structure is arranged at one side of the mould core that is provided with the mould cavity. The exhaust structure comprises a plurality of exhaust grooves which are distributed uniformly around the mould cavity and extend from the inside of the mould cavity to the outside of the mould core; a communicating groove which is arranged at the periphery of the mould cavity and that passes through the middle of each exhaust groove. The communicating groove communicates the exhaust grooves with each other, and therefore the exhaust grooves can match with each other to let gas in the exhaust structure exhausted after uniform circulation, thus achieving good exhaust effect and enhancing production efficiency. The exhaust structure has the advantages of simple structure, easy implementation and good practicability and popularization value.

Description

The improvement exhaust structure

[technical field]

The present invention relates to mould applications, particularly the exhaust structure in the mould specifically is the preferable die venting structure of a kind of exhaust effect.

[background technology]

In die design process, the design of exhaust structure is a very important part, if exhaust structure design is not good enough, then can pore, cavity, burn, problem such as weld mark is obvious.And in the present injection mold, adopt air discharge duct to solve the exhausting problem of mould usually.

As shown in Figure 1, be existing mold exhaust structure schematic diagram; This mould comprises a male model benevolence 10, cave in and form a die cavity 11 in this male model benevolence surface, and be provided with some air discharge ducts 12 around being positioned at die cavity 11 on these male model benevolence 10 surfaces, these some air discharge ducts 12 are from the die cavity 11 interior outsides of extending the benevolence of falling the male model 10, this plurality of rows air drain 12 all is ampuliform, promptly " bottleneck " end 13 width are narrower near end of die cavity 11 for it, and it is far away and extend to one section of male model benevolence 10 edges i.e. " bottle " 14 wider width apart from die cavity 11.As shown in Figure 2, be the sectional view of air discharge duct shown in Fig. 1; " bottleneck " 13 degree of depth of this air discharge duct 12 are more shallow, and its " bottle " 14 degree of depth are darker.So, gas can be discharged by these some air discharge ducts 12.

Yet, its air discharge duct negligible amounts of this kind structure, and do not interconnect between its each air discharge duct, it is the equal independent exhaustion of each air discharge duct, because the gas flow of each air discharge duct present position differs, and easily causes the residual gas of some exhaust ports position not discharge smoothly, easily causes product bad, and need clean die by frequent dismounting mould in process of production, cause the low and increase production cost of production efficiency.

[summary of the invention]

In view of above problem, the invention provides a kind of improvement exhaust structure, to overcome the bad low defective of production efficiency that causes of existing mold exhaust structure exhaust.

For achieving the above object, improvement exhaust structure provided by the present invention, be applicable in the mould structure, this mould comprises a die, cave in and form a die cavity in this die surface, wherein this exhaust structure is positioned at surface one side that this die is provided with die cavity, and this exhaust structure comprises: the plurality of rows air drain, and it is uniformly distributed in around the die cavity and in die cavity and evenly extends to the die outside; One connectivity slot, it is positioned at the die cavity periphery and passes each air discharge duct middle part.

Compared to prior art, this improvement exhaust structure all is communicated with air discharge duct by a connectivity slot, and so, each air discharge duct can cooperatively interact, and makes the interior gas of exhaust structure evenly circulate and afterwards discharges, thereby reach exhaust effect preferably, enhances productivity; And the present invention is simple in structure, is easy to realize, so have better practicability and promotional value.

[description of drawings]

Fig. 1 is an existing mold exhaust structure schematic diagram.

Fig. 2 is an air discharge duct schematic cross-section shown in Fig. 1.

Fig. 3 is this improvement exhaust structure schematic diagram.

Fig. 4 is an air discharge duct schematic cross-section shown in Fig. 3.

[specific embodiment]

For structure of the present invention and technical characterictic are had further understanding, be elaborated below in conjunction with accompanying drawing:

As shown in Figure 3, be this improvement exhaust structure schematic diagram; This improvement exhaust structure is suitable in the mould structure, it in the present embodiment injection mold, this mould comprises a die 20, this die 20 is a male model benevolence in the present embodiment, these die 20 surfaces are recessed to form a die cavity 21, this exhaust structure is located on these die 20 upper impression 21 surfaces on every side, and this exhaust structure comprises: some air discharge ducts 22, these some air discharge ducts 22 all are distributed in around the die cavity 21 and evenly extend to die 20 outsides in die cavity 21; One connectivity slot 23, this connectivity slot 23 are positioned at die cavity 21 peripheries and pass each bar air discharge duct middle part, and this connectivity slot 23 makes between each bar air discharge duct 22 and interconnects.And compare the wider width of this connectivity slot 23 with exhaust 22 grooves.

As shown in Figure 4, be the schematic cross-section of air discharge duct shown in Fig. 3; The degree of depth of the depth ratio air discharge duct 22 of connectivity slot 23 is slightly dark, and in the present embodiment, the degree of depth of air discharge duct 22 is 0.02mm, and the degree of depth of connectivity slot 23 is 0.10mm.And in actual production process, can adjust the degree of depth of air discharge duct 22 and connectivity slot 23 according to the difference of product flow of melt, and the degree of depth of this air discharge duct 22 can be between 0.01mm between the 0.03mm, and the degree of depth of this connectivity slot 23 can be between 0.05mm between the 0.20mm.

In the present embodiment, die 20 is a male model benevolence, and in actual applications, this die also can be a mother module core, and this exhaust structure can be located at male model benevolence surface one side, also can be located at mother module core surface one side; And the position of air discharge duct 23 and density also can be adjusted according to the flowability and the product structure characteristic of product melt, repeat no more herein.

Compared with prior art, this improvement exhaust structure interconnects each the bar air discharge duct 22 around the die cavity 21 by a connectivity slot 23, so, when each air discharge duct 22 present position gas flow was uneven, it can distribute 22 gas flows of each air discharge duct by this connectivity slot 23, but make each air discharge duct 22 collaborative work, thereby reach exhaust effect preferably, thereby enhance productivity and save production cost, and the present invention is simple in structure, be easy to realize, so have better practicability and promotional value.

Claims

1. an improvement exhaust structure is applicable to that in the mould structure, this mould comprises a die, and caving in and form a die cavity in this die surface, it is characterized in that this exhaust structure is positioned at surface one side that this die is provided with die cavity, and this exhaust structure comprises:

The plurality of rows air drain, it is uniformly distributed in around the die cavity and in die cavity and evenly extends to the die outside;

One connectivity slot, it is positioned at the die cavity periphery and passes each air discharge duct middle part.

2. improvement exhaust structure as claimed in claim 1 is characterized in that: described die is a male model benevolence.

3. improvement exhaust structure as claimed in claim 1 is characterized in that: described die is a mother module core.

4. improvement exhaust structure as claimed in claim 1 is characterized in that: described connectivity slot is wideer slightly than air discharge duct.

5. improvement exhaust structure as claimed in claim 1 is characterized in that: the described air discharge duct degree of depth between 0.01mm between 0.03mm.

6. improvement exhaust structure as claimed in claim 1 is characterized in that: the described connectivity slot degree of depth between 0.05mm between the 0.20mm.

7. improvement exhaust structure as claimed in claim 1 is characterized in that: described mould is an injection mold.