CN206678300U - A kind of injection mold gas extraction system - Google Patents
A kind of injection mold gas extraction system Download PDFInfo
- Publication number
- CN206678300U CN206678300U CN201720036315.0U CN201720036315U CN206678300U CN 206678300 U CN206678300 U CN 206678300U CN 201720036315 U CN201720036315 U CN 201720036315U CN 206678300 U CN206678300 U CN 206678300U
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- Prior art keywords
- mold insert
- exhaust passage
- cavity
- die cavity
- air pump
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Abstract
The utility model provides a kind of injection mold gas extraction system, it is intended to solves the problems, such as easily bubble and trapped gas occur using passive exhaust in the prior art.Injection mold gas extraction system includes exhaust passage, mold insert and vacuum air pump；Mold insert is embedded on lower mould, and mold insert, upper die and lower die form die cavity, and mold insert is set close to the peak of die cavity；Exhaust passage is arranged on lower mould, and exhaust passage includes inner port and external port, and mold insert is arranged at the inner port of exhaust passage, and vacuum air pump communicates with the external port of exhaust passage.During injection, the utility model is taken away the air in die cavity by vacuum air pump, reduces the air pressure in die cavity；What it brought has the beneficial effect that：Using subnormal ambient, injection pressure can be reduced, so as to reduce lathe load；By vacuum air pump, exhaust is relatively thorough, so as to greatly reduce product because be vented it is bad caused by bubble ", " trapped gas ", " burning ", " weld bond ", " starved " the defects of.
Description
Technical field
It the utility model is related to injection molding art, more particularly to a kind of injection mold gas extraction system.
Background technology
Injection mould die trial production in often occur lack of fill, compressed air burn, internal stress very high inside product,
Phenomena such as surface streamline and fusion line.For these phenomenons in addition to considering to adjust Shooting Technique, it is also contemplated that mould gate is
It is no reasonable.After Shooting Technique and cast gate the two problems all exclude, then the problem of exhaust of mould is exactly main, solution
Certainly the Main Means of this problem are exactly to open up air discharge duct.The effect of air discharge duct mainly has at 2 points：First, in injection fused materials
When, exclude the air of intracavitary；Second, exclude material caused various gases in heating process.Generally we open up air discharge duct
It is to be slotted at preceding mould die joint, by injection pressure by the gas " extrusion " of intracavitary, so as to drain into air.Such exhaust, can
Referred to as passive exhaust.
Passive exhaust has the following disadvantages：1st, for filling time shorter product, in injection molding, leaned in the short time
Molten plastic " extrusion " gas, can exist gas row not to the utmost, and cause " bubble ", " trapped gas ", " burning ", " weld bond ", " lack
The defects of glue ".2nd, injection pressure needed for " passive exhaust " is larger.On the premise of board clamp force is certain, board load is relative
Increase.Rise mould, peak the defects of occur probability increase.
Utility model content
The utility model provides a kind of injection mold gas extraction system, it is intended to solves using passive exhaust to hold in the prior art
Easily there is the problem of bubble and trapped gas.
In order to solve the above technical problems, the utility model is achieved through the following technical solutions：
A kind of injection mold gas extraction system, including exhaust passage, mold insert and vacuum air pump；Mold insert is embedded on lower mould,
Mold insert, upper die and lower die form die cavity, and mold insert is set close to the peak of die cavity；Exhaust passage is arranged on lower mould, and exhaust is logical
Road includes inner port and external port, and mold insert is arranged at the inner port of exhaust passage, the outer end of vacuum air pump and exhaust passage
Mouth communicates.
Further, mold insert includes housing, baffle plate and compression spring；Cavity is provided with housing；Cavity is communicated with housing
With the air admission hole of die cavity, cavity and the steam vent of exhaust passage are communicated with housing；Baffle plate setting is in cavity, compression spring
It is arranged between housing and baffle plate, in the presence of compression spring, baffle plate is resisted against on housing and blocks air admission hole.
When setting air inlet pore diameter size, air admission hole be able to should hinder to be molded the entrance of liquid, but should can make sky
Gas passes through；By tiny air admission hole, it on the one hand can realize and take the gas in die cavity away, on the other hand can hinder
It is molded the entrance of liquid；Baffle plate is set further to stop that injection liquid enters in cavity.
Further, cavity is cube shaped, and baffle plate is provided with four projections, and four projections bear against four in cavity
On madial wall.It is easy to ventilate and is oriented to.
Further, mold insert is provided with air-vent.
Compared with prior art the utility model has the advantages that：
During injection, the utility model is taken away the air in die cavity by vacuum air pump, reduces the air pressure in die cavity；
What it brought has the beneficial effect that：Using subnormal ambient, injection pressure can be reduced, so as to reduce lathe load；Taken out by vacuum
Air pump, exhaust is relatively thorough, so as to greatly reduce product because be vented it is bad caused by bubble ", " trapped gas ", " burning ", " molten
The defects of wiring ", " starved ".In addition, the utility model is provided with special exhaust pathway, good exhaust effect based on mold insert.Mold insert
Peak close to die cavity is set, and can improve exhaust effect, and injection liquid can be avoided to enter exhaust passage.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not see
Work is the restriction to scope, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other related accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model in embodiment one；
Fig. 2 is structural representation of the present utility model in embodiment two；
Fig. 3 is the partial enlarged drawing at A in Fig. 2.
Embodiment
In description of the present utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " company
Connect ", the term such as " fixation " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；
Can be mechanical connection or electrical connection；Can be directly connected to or be indirectly connected by intermediary, can
To be connection or the interaction relationship of two elements of two element internals.For those of ordinary skills, may be used
To understand concrete meaning of the above-mentioned term in the utility model as the case may be.
Embodiment one：
Refering to Fig. 1, a kind of injection mold gas extraction system, including exhaust passage 21, mold insert 3 and vacuum air pump 4；Mold insert 3
It is embedded on lower mould 2, mold insert 3, upper mould 1 and lower mould 2 form die cavity 6, and mold insert 3 is set close to the peak of die cavity 6；Exhaust passage
21 are arranged on lower mould 2, and exhaust passage 21 includes inner port and external port, and mold insert 3 is arranged at the inner port of exhaust passage 21,
Vacuum air pump 4 communicates with the external port of exhaust passage 21.
Air can transmit gas by the gap between mold insert 3 and lower mould 2 in the present embodiment；Or set on mold insert 3
Put air-vent.
In injection, vacuum air pump 4 is opened, in the presence of vacuum air pump 4, the air in die cavity 6 is extracted, die cavity
6 are in negative pressure state, and injection liquid enters in die cavity 6 under less injection pressure.
Embodiment two：
Refering to Fig. 2 and Fig. 3, a kind of injection mold gas extraction system, including upper mould 1, lower mould 2, mold insert 3 and vacuum air pump 4；
Mold insert 3 is embedded on lower mould 2, and mold insert, upper mould 1 and lower mould 2 form die cavity 6；Lower mould 2 is provided with exhaust passage 21, exhaust passage
21 include inner port and external port, and mold insert 3 is arranged at the inner port of exhaust passage 21, vacuum air pump 4 and exhaust passage 21
External port communicate.
Mold insert 3 includes housing 31, baffle plate 32 and compression spring 33；Cavity 7 is provided with 31 in housing；Housing 31, which is provided with, to be connected
The air admission hole 8 of cavity body 7 and die cavity 6, cavity 7 and the steam vent 9 of exhaust passage 21 are communicated with housing 31；Baffle plate 32 is set
In cavity 7, compression spring 33 is arranged between housing and baffle plate 32, and in the presence of compression spring 33, baffle plate 32 is resisted against
On housing 31 and block air admission hole 8.
The cavity 7 is cube shaped, and baffle plate 32 is provided with four projections 5, and four projections 5 are born against in cavity 7
On four madial walls.
In injection, vacuum air pump 4 is opened, in the presence of negative pressure, baffle plate 32 pushes compression spring 33, air admission hole 8
It is opened, the air in die cavity 6 is extracted, and die cavity 6 is in negative pressure state, and injection liquid enters die cavity under less injection pressure
In 6；After pumping, baffle plate 32 resets under the effect of compression spring 33, blocks air admission hole 8, prevents that being molded liquid enters cavity 7.
Specific embodiment of the utility model is the foregoing is only, but the technical characteristics of the utility model is not limited to
This, any those skilled in the art in field of the present utility model, all cover in this practicality newly by the change or modification made
Among the scope of the claims of type.
Claims (3)
1. a kind of injection mold gas extraction system, it is characterized in that：Including mold insert (3), vacuum air pump (4) and exhaust passage (21)；
Mold insert (3) is embedded on lower mould (2), and mold insert (3), upper mould (1) and lower mould (2) form die cavity (6), and mold insert (3) is close to die cavity (6)
Peak set；Exhaust passage (21) is arranged on lower mould (2), and exhaust passage (21) include inner port and external port, mold insert
(3) it is arranged at the inner port of exhaust passage (21), vacuum air pump (4) communicates with the external port of exhaust passage (21)；
Mold insert (3) includes housing (31), baffle plate (32) and compression spring (33)；Housing (31) is provided with cavity (7)；On housing (31)
The air admission hole (8) of cavity (7) and die cavity (6) is communicated with, cavity (7) and exhaust passage (21) are communicated with housing (31)
Steam vent (9)；Baffle plate (32) is arranged in cavity (7), and compression spring (33) is arranged between housing and baffle plate (32), is being compressed
In the presence of spring (33), baffle plate (32) is resisted against on housing (31) and blocks air admission hole (8).
2. a kind of injection mold gas extraction system according to claim 1, it is characterized in that：The cavity (7) to be cube shaped,
Baffle plate (32) is provided with four projections (5), and four projections (5) are born against on four madial walls of cavity (7).
3. a kind of injection mold gas extraction system according to claim 1, it is characterized in that：Mold insert (3) is provided with air-vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720036315.0U CN206678300U (en) | 2017-01-11 | 2017-01-11 | A kind of injection mold gas extraction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720036315.0U CN206678300U (en) | 2017-01-11 | 2017-01-11 | A kind of injection mold gas extraction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206678300U true CN206678300U (en) | 2017-11-28 |
Family
ID=60395589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720036315.0U Expired - Fee Related CN206678300U (en) | 2017-01-11 | 2017-01-11 | A kind of injection mold gas extraction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206678300U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108748909A (en) * | 2018-07-03 | 2018-11-06 | 盐城市建得模塑有限公司 | A kind of method for exhausting of injection moulding mold |
| CN109551727A (en) * | 2018-12-27 | 2019-04-02 | 泰睿美精密器件(深圳)有限公司 | A kind of injection mold |
| CN109774079A (en) * | 2018-12-28 | 2019-05-21 | 瑞声精密制造科技(常州)有限公司 | A kind of mold |
| CN110303649A (en) * | 2019-07-09 | 2019-10-08 | 吴婷婷 | A kind of mold for tire of vacuum degassing bubble |
| CN111645253A (en) * | 2020-04-14 | 2020-09-11 | 苏州博琪海电器有限公司 | Soft positioning type injection molding process for shell of dust collector |
| CN111907004A (en) * | 2020-07-30 | 2020-11-10 | 重庆万邦精密模具有限公司 | Prevent injection mold of weld line production |
| CN111907005A (en) * | 2020-07-30 | 2020-11-10 | 重庆万邦精密模具有限公司 | Injection mold with elastic ejection structure |
| CN111907007A (en) * | 2020-07-30 | 2020-11-10 | 重庆万邦精密模具有限公司 | Prevent drawing accurate injection mold of material |
| CN114347385A (en) * | 2021-12-22 | 2022-04-15 | 东莞晶彩光学有限公司 | Injection mold for producing convex lens |
| TWI790840B (en) * | 2021-12-03 | 2023-01-21 | 陳銘棟 | In-mold exhaust fixture structure for plastic, rubber, and foaming molds |
-
2017
- 2017-01-11 CN CN201720036315.0U patent/CN206678300U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108748909A (en) * | 2018-07-03 | 2018-11-06 | 盐城市建得模塑有限公司 | A kind of method for exhausting of injection moulding mold |
| CN109551727A (en) * | 2018-12-27 | 2019-04-02 | 泰睿美精密器件(深圳)有限公司 | A kind of injection mold |
| CN109774079A (en) * | 2018-12-28 | 2019-05-21 | 瑞声精密制造科技(常州)有限公司 | A kind of mold |
| CN110303649A (en) * | 2019-07-09 | 2019-10-08 | 吴婷婷 | A kind of mold for tire of vacuum degassing bubble |
| CN110303649B (en) * | 2019-07-09 | 2021-11-05 | 叶豪 | Tire mold with vacuum bubble removal function |
| CN111645253A (en) * | 2020-04-14 | 2020-09-11 | 苏州博琪海电器有限公司 | Soft positioning type injection molding process for shell of dust collector |
| CN111907005A (en) * | 2020-07-30 | 2020-11-10 | 重庆万邦精密模具有限公司 | Injection mold with elastic ejection structure |
| CN111907007A (en) * | 2020-07-30 | 2020-11-10 | 重庆万邦精密模具有限公司 | Prevent drawing accurate injection mold of material |
| CN111907004A (en) * | 2020-07-30 | 2020-11-10 | 重庆万邦精密模具有限公司 | Prevent injection mold of weld line production |
| CN111907005B (en) * | 2020-07-30 | 2022-08-16 | 重庆万邦精密模具有限公司 | Injection mold with elastic ejection structure |
| TWI790840B (en) * | 2021-12-03 | 2023-01-21 | 陳銘棟 | In-mold exhaust fixture structure for plastic, rubber, and foaming molds |
| CN114347385A (en) * | 2021-12-22 | 2022-04-15 | 东莞晶彩光学有限公司 | Injection mold for producing convex lens |
| CN114347385B (en) * | 2021-12-22 | 2023-09-08 | 东莞晶彩光学有限公司 | Injection mold for producing convex lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171128 Termination date: 20210111 |