CN201271997Y - Vacuum auxiliary injection mold - Google Patents
Vacuum auxiliary injection mold Download PDFInfo
- Publication number
- CN201271997Y CN201271997Y CNU2008201713468U CN200820171346U CN201271997Y CN 201271997 Y CN201271997 Y CN 201271997Y CN U2008201713468 U CNU2008201713468 U CN U2008201713468U CN 200820171346 U CN200820171346 U CN 200820171346U CN 201271997 Y CN201271997 Y CN 201271997Y
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- mold
- cavity
- injection
- core
- mold cavity
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Abstract
The utility model discloses a vacuum auxiliary injection mold which comprises a shaping part provided with a mold core and a cavity mold; the utility model is characterized in that the mold core and the cavity mold form a closed mold cavity after the mold is closed; the mold cavity is provided with an injection port connected with a nozzle and a vacuum pump joint. Compared with the prior art, the utility model is provided with a pressure pad on a mold foot to lead the mold cavity formed by the mold core and the cavity mold after the mold is closed to become a completely sealed space; the pressure pad is provided with at least one joint which can be connected with a vacuum pump. Before injection, the air in the mold cavity can be vacuumized by the vacuum pump, and then injection is carried out; as a certain pressure different exits, the injection molten material is led to easily enter each corner of the mold cavity from the nozzle, thus not only improving the quality of an injected piece, but also effectively prolonging the service life of the mold.
Description
Technical field
The utility model relates to a kind of injection mold that can gas clean-up.
Background technology
In the mould design, as die casting, injection etc. after the mould closure, are comprising air in die cavity, for when injecting fused materials, guarantee that the air in the die cavity can be discharged, and need to be provided with in mould specially air discharge duct.
Usually, thin-gage goods, away from the position of cast gate, offering of air discharge duct just seems particularly important.Except can guaranteeing smooth discharge of gas in the die cavity, air discharge duct can also realize getting rid of all gases that material produces in heating process, in addition, for small articles or precision component, air discharge duct except can avoid product surface burn and the injection volume deficiency, can also eliminate the various defectives of goods, reduce mold fouling etc.
But, for material flowability poor plastic or the very thin product of wall thickness, can effectively discharge air in the injection moulding process though offer air discharge duct, but because die cavity narrow space, there is certain air pressure again in mould inside, be difficult to reach filling effect preferably, the injection moulding liquid of fusion often can not inject and be full of the every nook and cranny of mould fully, can influence the molding effect of die products.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of can improve mould vacuum and make the more easy vacuum aided injection mold of moulding at above-mentioned prior art present situation.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this vacuum aided injection mold, comprise the profiled part of forming by core and die, it is characterized in that: described core and recessed film form the mold cavity of a sealing behind matched moulds, offer the inlet and the vavuum pump interface that link to each other with nozzle on this mold cavity.
For the ease of the connection of vavuum pump, described mold cavity is respectively arranged with a pressing plate at the mould pin two ends that are positioned at core one side, offers at least one described interface on the described pressing plate, and described vavuum pump is connected on this interface.
In order to improve the sealing of die cavity, also be provided with a sealing strip between the side form pin of each described pressing plate and correspondence, the sealing bar can guarantee the sealing reliability between cover plate and the mould pin.
Compared with prior art, advantage of the present utility model is: on the mould pin pressing plate is set, makes that core and the recessed film formed mold cavity behind the matched moulds becomes a complete sealed space, have the interface that at least one can connect vavuum pump on the pressing plate.Before injection moulding, can earlier the air in the mold cavity be vacuumized by vavuum pump, and then carry out injection moulding, owing to there is certain pressure reduction, make the injection moulding melt can enter into each corner of die cavity easily from nozzle, both promote the quality of plastic, also prolonged the service life of mould effectively.
Description of drawings
Fig. 1 is the mould structure schematic diagram of the utility model embodiment one.
Fig. 2 is the cutaway view of mould shown in Figure 1.
Fig. 3 is the mould structure cutaway view of the utility model embodiment two.
The specific embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
As shown in Figure 1, be first embodiment of the present utility model, the vacuum aided injection mold of this embodiment one includes sky plate 1 and the floor 2 that is positioned at both sides, and the backing plate 3 between sky plate 1 and floor 2, core plate 4 and recessed film 5, wherein, form the mold cavity of a sealing behind core plate 4 and recessed film 5 matched moulds, this mold cavity is being respectively arranged with pressing plate 7 again in mould pin 6 both sides that are positioned at core plate 4 one sides, have sealing strip 8 between each pressing plate 7 and the corresponding side form pin 6, also offer two interfaces 71 that can connect vavuum pump therein on the pressing plate 7 of a side.
As shown in Figure 2, can see mould internal structure and this formed in mould thin-wall product A of utilization behind matched moulds of embodiment one.Before injection moulding, external vavuum pump can be connected on the interface 71 that is positioned at mould pin one side guide 7, vacuumize earlier, make the air in the mold cavity discharge outside the die cavity fully, and then carry out the melt injection moulding, need not big injection pressure, melt just is easy to enter into from nozzle each corner of die cavity, shaping efficiency is higher, has both promoted the quality of plastic, has also prolonged the service life of mould effectively.
The basic injection moulding flow process of the mould of present embodiment is: matched moulds → vacuumize → injection moulding → cooling → die sinking → eject → pickup → matched moulds → next circulation.
As shown in Figure 3, be second embodiment of the present utility model, the shaped article B of this embodiment two still is a thin-wall product, the mould of this product B comprise day plate 1 ', floor 2 ' and be arranged on day plate 1 ' and floor 2 ' between cavity plate 3 ', core plate 4 ' and backing plate 5 ', wherein, injection machine nozzle 8 ' be arranged on day plate 1 ' on, injection machine bump mouth 8 ' below be connected with the sprue bush 9 that stretches in the mold cavity ', mould pin 6 ' the side then also be provided with two connectors 71 that can connect vavuum pump '.
Before injection moulding, the air in the mold cavity is discharged earlier by vavuum pump, realize vacuumizing, and then bump mouth 8 ' through sprue bush 9 ' be injected in the mold cavity melt from injection machine.The mold injection flow process of embodiment two is identical with embodiment one, does not do at this and gives unnecessary details.
Claims (3)
1, a kind of vacuum aided injection mold, comprise profiled part with core and die, it is characterized in that: described core and recessed film form the mold cavity of a sealing behind matched moulds, offer the inlet and the vavuum pump interface that link to each other with nozzle on this mold cavity.
2, vacuum aided injection mold according to claim 1, it is characterized in that: described mold cavity is respectively arranged with a pressing plate at the mould pin two ends that are positioned at core one side, offer at least one described interface on the described pressing plate, described vavuum pump is connected on this interface.
3, vacuum aided injection mold according to claim 1 is characterized in that: also be provided with a sealing strip between the side form pin of each described pressing plate and correspondence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201713468U CN201271997Y (en) | 2008-12-16 | 2008-12-16 | Vacuum auxiliary injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201713468U CN201271997Y (en) | 2008-12-16 | 2008-12-16 | Vacuum auxiliary injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201271997Y true CN201271997Y (en) | 2009-07-15 |
Family
ID=40882349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201713468U Expired - Fee Related CN201271997Y (en) | 2008-12-16 | 2008-12-16 | Vacuum auxiliary injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201271997Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823332A (en) * | 2010-04-26 | 2010-09-08 | 重庆理工大学 | Method and device for regulating thickness of extrusion-blown moulding hollow work piece by utilizing local vacuum-pumping |
| CN102145531A (en) * | 2010-02-09 | 2011-08-10 | 昆山宏泽电子有限公司 | Vacuum auxiliary injection forming equipment |
| CN103991172A (en) * | 2014-05-28 | 2014-08-20 | 珠海正友科技有限公司 | Traceless rapid forming mould and forming method |
| CN105612038A (en) * | 2013-08-29 | 2016-05-25 | 简易制造欧洲有限公司 | Mold for producing three-dimensional items |
| CN105881824A (en) * | 2016-06-19 | 2016-08-24 | 浙江台州美多模具有限公司 | Injection mold for storage boxes of automobiles |
| CN106079256A (en) * | 2016-06-19 | 2016-11-09 | 浙江台州美多模具有限公司 | The ornamental strip mould of air conditioner integrated formula molding |
| CN112677401A (en) * | 2020-12-09 | 2021-04-20 | 安徽双羽新材料包装有限公司 | Injection mold is used in production of degradable cutlery box |
| CN113771305A (en) * | 2021-09-24 | 2021-12-10 | 广东柳道热流道系统有限公司 | Gas-assisted runner structure, hot runner system and injection molding method |
| CN114131808A (en) * | 2021-11-03 | 2022-03-04 | 河北浩凯建材有限公司 | Production device for wrapping type sealing strip and use method |
-
2008
- 2008-12-16 CN CNU2008201713468U patent/CN201271997Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145531A (en) * | 2010-02-09 | 2011-08-10 | 昆山宏泽电子有限公司 | Vacuum auxiliary injection forming equipment |
| CN101823332A (en) * | 2010-04-26 | 2010-09-08 | 重庆理工大学 | Method and device for regulating thickness of extrusion-blown moulding hollow work piece by utilizing local vacuum-pumping |
| CN101823332B (en) * | 2010-04-26 | 2012-09-12 | 重庆理工大学 | Method and device for regulating thickness of extrusion-blown moulding hollow work piece by utilizing local vacuum-pumping |
| CN105612038A (en) * | 2013-08-29 | 2016-05-25 | 简易制造欧洲有限公司 | Mold for producing three-dimensional items |
| CN103991172A (en) * | 2014-05-28 | 2014-08-20 | 珠海正友科技有限公司 | Traceless rapid forming mould and forming method |
| CN105881824A (en) * | 2016-06-19 | 2016-08-24 | 浙江台州美多模具有限公司 | Injection mold for storage boxes of automobiles |
| CN106079256A (en) * | 2016-06-19 | 2016-11-09 | 浙江台州美多模具有限公司 | The ornamental strip mould of air conditioner integrated formula molding |
| CN112677401A (en) * | 2020-12-09 | 2021-04-20 | 安徽双羽新材料包装有限公司 | Injection mold is used in production of degradable cutlery box |
| CN113771305A (en) * | 2021-09-24 | 2021-12-10 | 广东柳道热流道系统有限公司 | Gas-assisted runner structure, hot runner system and injection molding method |
| CN114131808A (en) * | 2021-11-03 | 2022-03-04 | 河北浩凯建材有限公司 | Production device for wrapping type sealing strip and use method |
| CN114131808B (en) * | 2021-11-03 | 2024-03-29 | 河北浩凯建材有限公司 | Production device for wrapped sealing strip and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20131216 |