CN201856359U - Gas needle for gas assisting of plastic injection mould - Google Patents
Gas needle for gas assisting of plastic injection mould Download PDFInfo
- Publication number
- CN201856359U CN201856359U CN2010200489640U CN201020048964U CN201856359U CN 201856359 U CN201856359 U CN 201856359U CN 2010200489640 U CN2010200489640 U CN 2010200489640U CN 201020048964 U CN201020048964 U CN 201020048964U CN 201856359 U CN201856359 U CN 201856359U
- Authority
- CN
- China
- Prior art keywords
- ejector sleeve
- gas
- core
- mould
- push pedal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229920003023 plastic Polymers 0.000 title claims abstract description 23
- 239000004033 plastic Substances 0.000 title claims abstract description 23
- 238000002347 injection Methods 0.000 title abstract description 9
- 239000007924 injection Substances 0.000 title abstract description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 238000001746 injection moulding Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 18
- 239000004568 cement Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to an assistant part in a plastic injection mould, specifically to a gas needle, used as an intake for allowing gas to enter a cavity in a gas-assisted injection process, for gas assisting of the plastic injection mould. Structure of the gas needle is formed in such a manner that holes are processed on a mould core, a moving mould plate, a push pipe fixing plate, a push plate and a moving mould holder plate, the push pipe is installed in the series of holes, a push pipe mould core is installed in the push pipe, a gas channel is axially processed on a surface of the push pipe mould core, a blind hole extending to the mould core is processed in the push plate, the push pipe mould core is fixed at one end of the moving mould holder plate, and each connection point of an airflow channel is sealed. The gas needle can substitute a special gas needle, so that design space of the moving mould plate is saved, processing cost of the mould can be reduced, and parts of the gas needle are easy to manufacture and convenient to install, adjust and maintain.
Description
Technical field
The utility model relates to a kind of auxiliary component in plastic injection mold, specifically is to serve as the part that gas enters the inlet of die cavity in the gas aided injection mould.
Background technology
The gas assisted molding technology is the technology more widely of using in the injection-moulding plastic.Mainly be high pressure nitrogen through the auxilliary master controller of gas and air tube directly injection enter in the plasticizing plastics in the die cavity, make that plastic parts is inner to expand and cause hollow, but still keep product surface and profile perfect.Particularly hang down the plastic product of easy deformation than big or structural strength, can effectively avoid the surperficial shrink mark and the distortion of product, can also save plastic material simultaneously, reduce injection pressure, the shortening injection cycle for wall thickness.In gas assistant injection molding, air tube is the vitals that influences Forming Quality, often because the air tube design is improper, influences gas assisted molding.At present, general air tube structure is made up of air tube core and core retainer plate.Core retainer plate is overlapping the air tube core.In the use air tube is installed in the mold cores, air tube one end connects appendix, and the other end connects die cavity.Gas flows to air tube from appendix and enters die cavity.The speed that air flue control gas on the air tube core enters prevents that plastic cement from entering appendix.But, must in moving platen, design air flue when adopting general air tube, taken limited space.And making that the processing cost of mould is higher, the installation of air tube, debugging, maintenance are cumbersome, simultaneously, generally can stay the air inlet vestige of air tube at surface of plastic product, influence the presentation quality of plastic cement products.
Summary of the invention
In order to overcome the above deficiency of existing air tube, the purpose of this utility model provides a kind of air tube, this air tube not only makes the processing cost of mould reduce, the installation of air tube, debugging, maintenance are more convenient, and on plastic cement products, can not stay air inlet, thereby guaranteed the presentation quality of product.
The technical scheme that its technical problem that solves the utility model adopts is: processing is porose on core, moving platen, ejector sleeve fixed head, push pedal and the Bottom clamp plate of mould, ejector sleeve is packed in these a series of holes, assembling ejector sleeve core in the ejector sleeve, the ejector sleeve whose surfaces is processed with an air flue vertically, be processed with the blind hole that extends to core in the push pedal, the ejector sleeve core is fixed at an end of Bottom clamp plate, each contact place sealing of gas channel.
Each contact place hermetically-sealed construction of described gas channel is: sealing ring is set around the ejector sleeve core position between ejector sleeve fixed head and push pedal, at push pedal lower surface and ejector sleeve core contact position conical seal ring is installed, the end that conical seal ring extends out is pressed in the Bottom clamp plate upper surface.
Pack in the hole of described Bottom clamp plate trip bolt and compress the end of ejector sleeve core, conical seal ring is fixed by pin and ejector sleeve core.
The beneficial effects of the utility model are that gas can pass through the air flue between ejector sleeve and the ejector sleeve core by the blind hole conducting air-flow in the push pedal, enters mold cavity, has saved the design space of moving platen.Core with the band ejector sleeve has replaced special air tube, has saved processing cost, and replacement part is obtained easily.Install, debug, safeguard more convenient.
Description of drawings
Fig. 1 is the vertical section structural map of first embodiment of the present utility model;
Fig. 2 is the vertical section structural map of second embodiment of the present utility model;
Fig. 1-1 is ejector sleeve and the plastic parts place enlarged drawing of first embodiment;
Fig. 1-2 is ejector sleeve fixed head and the push pedal place sealing enlarged drawing of first embodiment;
Fig. 1-3 is push pedal bottom and ejector sleeve core sealing enlarged drawings of first embodiment;
Fig. 2-1 is ejector sleeve and the plastic parts place enlarged drawing of second embodiment.
Among the figure: ejector sleeve 1, ejector sleeve core 2, sealing ring 3, conical seal ring 4, fastening screw 5, core 6, moving platen 7, ejector sleeve fixed head 8, push pedal 9, Bottom clamp plate 10, pin 11, plastic parts 12, air flue 13, blind hole 14.
The specific embodiment
In Fig. 1, Fig. 1-1, Fig. 1-2 and Fig. 1-3 illustrated embodiment, plastic parts 12 has the screw column of projection.The blind hole 14 of processing delivery air in push pedal 9, and extend to till the position of ejector sleeve core 2.Between ejector sleeve fixed head 8 and push pedal 9, be processed with seal groove, place sealing ring 3 in the groove.Conical seal ring 4 is installed at the place, slit that combines with ejector sleeve core 2 in the hole of push pedal 9 lower surfaces, and conical seal ring 4 extends the outer end that portals and is pressed in Bottom clamp plate 10 upper surfaces.Processing air flue 13 on ejector sleeve core 2, gas enters through push pedal 9 outside mould, enters die cavity by the air flue on the ejector sleeve core 2 13.Sealing ring 3 prevents that gas from leaking from the slit of ejector sleeve 1 and ejector sleeve fixed head 8 and push pedal 9.The tapered segment of conical seal ring 4 closely contacts with push pedal 9, prevents to leak the slit of gas between conical seal ring 4 and push pedal 9.The taper seat of conical seal ring 4 is subjected to the extruding of push pedal 9, makes it that ejector sleeve core is packed tightly, and prevents to leak the slit of gas between conical seal ring 4 and ejector sleeve core 2.Conical seal ring 4 is fixed on the ejector sleeve core 2 by pin 11.
In Fig. 2 and Fig. 2-1 illustrated embodiment, plastic parts 12 does not have the screw column of projection.Ejector sleeve core 2 and ejector sleeve 1 end extend to the surface of plastic parts 12.Processing air flue 13 on ejector sleeve core 2, gas is the gas transmission blind hole 14 through push pedal 9 outside mould, enters die cavity by the air flue of processing on the ejector sleeve core 2 13.
Claims (3)
1. an injection-moulding plastic mould gas is assisted and is used air tube, it is characterized in that: processing is porose on core, moving platen, ejector sleeve fixed head, push pedal and the Bottom clamp plate of mould, ejector sleeve is packed in these a series of holes, assembling ejector sleeve core in the ejector sleeve, the ejector sleeve whose surfaces is processed with an air flue vertically, be processed with the blind hole that extends to core in the push pedal, the ejector sleeve core is fixed at an end of Bottom clamp plate, each contact place sealing of gas channel.
2. the auxilliary air tube of using of injection-moulding plastic mould gas according to claim 1, it is characterized in that: sealing ring is set around the ejector sleeve core position between ejector sleeve fixed head and push pedal, at push pedal lower surface and ejector sleeve core contact position conical seal ring is installed, the end that conical seal ring extends out is pressed in the Bottom clamp plate upper surface.
3. injection-moulding plastic mould gas according to claim 2 is auxilliary uses air tube, it is characterized in that: the trip bolt and compress the end of ejector sleeve core of packing in the hole of Bottom clamp plate, conical seal ring is fixed by pin and ejector sleeve core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200489640U CN201856359U (en) | 2010-01-20 | 2010-01-20 | Gas needle for gas assisting of plastic injection mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200489640U CN201856359U (en) | 2010-01-20 | 2010-01-20 | Gas needle for gas assisting of plastic injection mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201856359U true CN201856359U (en) | 2011-06-08 |
Family
ID=44102175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200489640U Expired - Fee Related CN201856359U (en) | 2010-01-20 | 2010-01-20 | Gas needle for gas assisting of plastic injection mould |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201856359U (en) |
-
2010
- 2010-01-20 CN CN2010200489640U patent/CN201856359U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20130120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |