CN102837393B - Annular arc discharge-type auxiliary injection molding air needle of external gas - Google Patents
Annular arc discharge-type auxiliary injection molding air needle of external gas Download PDFInfo
- Publication number
- CN102837393B CN102837393B CN201210187390.9A CN201210187390A CN102837393B CN 102837393 B CN102837393 B CN 102837393B CN 201210187390 A CN201210187390 A CN 201210187390A CN 102837393 B CN102837393 B CN 102837393B
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- Prior art keywords
- air tube
- air
- core body
- injection molding
- air needle
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 22
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 30
- 238000005516 engineering process Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
An annular arc discharge-type auxiliary injection molding air needle of external gas comprises a hollow air needle tube and an air needle core, wherein a needle ring step is arranged at the air inlet end of the air needle tube; an inner thread is arranged at the air outlet end of the air needle tube; the air needle core comprises a core body and an end cover; the end cover is fixed at the tail end of the core body; the tail end of the core body is provided with an outer thread section matched with the inner thread of the air needle tube; the front end of the core body has conical degree; and two sides of the outer thread section at the tail end of the core body are symmetrically chipped to form a chipped part, and the air needle core and the air needle tube form a gas channel in common. The annular arc discharge-type auxiliary injection molding air needle has the beneficial effects that 1) the air needle core and the air needle tube are convenient to mount and dismantle, so that the efficiency is improved and the cost is reduced; and 2) the tail end of the air needle core is matched with the air outlet end of the air needle tube to form an arc air duct, so that the gas is discharged along the arc air duct and uniformly distributed on the surface of a plastic part.
Description
Technical field
The present invention relates to a kind of ring-type arc air-out type extraneous gas aid injection molding air tube
Background technology
Extraneous gas aid injection molding technology is the one of gas assistant injection molding, is mainly used in injection mo(u)lding.Extraneous gas aid injection molding can produce the effect that internal gas aid injection molding produces, and need to not offer air flue in components interior, thereby is widely used in the processing of plastic products.
Gas in extraneous gas assistant injection molding system, from external air source, generally can enter die cavity via specially designed air tube, acts on the surface of plastic.Because extraneous gas aid injection molding technology is mainly applicable to the large thin-wall product of putting down and have rib-like structure, while requiring gas air inlet, be farthest parallel to action face.Air tube is mounted on mould, and the air tube in existing extraneous gas assistant injection molding system is generally traditional air tube, mainly by air tube core, and air tube urceolus, grub screw, water proof ring composition, intake method is the plastic surface-pressure of concentrating vertical air tube.The advantage of this structure is that point is exerted pressure, but can not meet the requirement of extraneous gas aid injection molding technology.
Summary of the invention
In order to overcome existing air tube at intake method and to act on the deficiency aspect the gas flow direction on plastic surface, the present invention proposes a kind of ring-type arc air-out type extraneous gas aid injection molding air tube.
Ring-type arc air-out type extraneous gas aid injection molding air tube of the present invention, is characterized in that: comprise air tube cylinder, the air tube core of hollow, the inlet end of described air tube cylinder arranges needle cycle step; The outlet side of described air tube cylinder arranges internal thread; Described air tube core comprises core body and end cap, and described end cap is fixed on the end of described core body; The external thread section that the setting of described core body end is mated with the internal thread of air tube cylinder, the front end of described core body is with tapering; The external thread section bilateral symmetry of described core body end is scabbled, and forms and scabbles place; Described air tube core and described air tube cylinder form gas passage jointly.
The port inner wall of described outlet side is arranged to arc.
The front end of described core body is offered groove.
Described end cap and described end junction have radian, and jointly form arc airway with the arc of described outlet side.
The outer dia of described needle cycle step is greater than the outer dia of the cylindrical shell of described air tube cylinder.
Described needle cycle step and described moving platen arrange cannelure between inserting.
Resistant to elevated temperatures O RunddichtringO is installed in described cannelure.
The height of described air tube cylinder is greater than the moving platen height of fitting plane of inserting.
The end of described core body is connected with the stub end of the tapering of described front end.
When use, after first will air tube core inserting air tube cylinder, screw, and undertaken fasteningly by the groove of air tube core front end, in the cannelure of inserting at moving platen, pack into after O RunddichtringO, whole air tube cylinder is pressed into from the moving platen back side of inserting, utilizes needle cycle step and mould bases backing plate to fix; The tapering of the front end of air tube core reduces gas flow, has formed annular gas flow channel, along with runner diminishes gradually, makes balanced inlet air, after the end of air tube core coordinates with the outlet side of air tube cylinder, forms arc airway; Gases at high pressure enter the airway of mould bases backing plate by nitrogen gas generator, then gas jointly forms gas passage by air tube core and air tube cylinder and gives vent to anger, and is farthest evenly distributed on plastic surface.
Beneficial effect of the present invention: 1) air tube core and the installation of air tube cylinder, convenient disassembly, raise the efficiency, reduce costs; 2) end of air tube core forms arc airway after coordinating with air tube cylinder outlet side, and gas is given vent to anger along arc airway, is evenly distributed on plastic surface.
Brief description of the drawings
Fig. 1 is explosive view of the present invention
Fig. 2 is installation diagram of the present invention
Fig. 3 be in Fig. 2 A place enlarged drawing (d1 is the thickness of needle cycle step; The gap at d2 place is the gap of step side and counterbore medial surface, and assembling needs; The gap at d3 place is the reaming gap in non-length of fit, is beneficial to assembling and exhaust)
Fig. 4 is air tube cored structure figure of the present invention
Fig. 5 is air tube barrel structure figure of the present invention
Fig. 6 is the mobile schematic diagrames of gases at high pressure of the present invention
Detailed description of the invention
Further illustrate the present invention below in conjunction with accompanying drawing
With reference to accompanying drawing:
Ring-type arc air-out type extraneous gas aid injection molding air tube of the present invention, comprises air tube cylinder 1, the air tube core 2 of hollow, and the inlet end 11 of described air tube cylinder 1 arranges needle cycle step 111; The outlet side 12 of described air tube cylinder 1 arranges internal thread 121; Described air tube core 2 comprises core body 21 and end cap 22, and described end cap 22 is fixed on the end of described core body 21; Described core body 21 ends 211 arrange the external thread section mating with the internal thread 12 of air tube cylinder 1, and the front end 212 of described core body 21 is with tapering; The external thread section bilateral symmetry of described core body 21 ends 211 is scabbled, and forms and scabbles place 2111; Described air tube core 2 and the common gas passage that forms of described air tube cylinder 1.
The port inner wall of described outlet side 12 is arranged to arc 122.
The front end 212 of described core body 21 is offered groove 2121.
Described end cap 22 has radian with described end 211 junctions, and jointly forms arc airway with the arc of described outlet side 12.
The outer dia of described needle cycle step 111 is greater than the outer dia of the cylindrical shell of described air tube cylinder 1.
Described needle cycle step 111 and described moving platen are inserted cannelure are set between 4.
Resistant to elevated temperatures O RunddichtringO 5 is installed in described cannelure.
The height of described air tube cylinder 1 is greater than the moving platen height of 4 fitting plane of inserting.
The end 211 of described core body 21 is connected with the stub end of the tapering of described front end 212.
When use, after first air tube core 2 being inserted to air tube cylinder 1, screw, and undertaken fasteningly by the groove of air tube core 2 front ends 22, in moving platen is inserted 4 cannelure, pack into after O RunddichtringO 5, whole air tube cylinder is pressed into from moving platen 4 back sides of inserting, utilizes needle cycle step 111 fixing with mould bases backing plate 3; The tapering of the front end 22 of air tube core 2 reduces gas flow, has formed annular gas flow channel, along with runner diminishes gradually, makes balanced inlet air, after the end 21 of air tube core 2 coordinates with the outlet side 12 of air tube cylinder 1, forms arc airway; Gases at high pressure enter the airway 31 of mould bases backing plate 3 by nitrogen gas generator, then gas is given vent to anger by the common gas passage that forms of air tube core 2 and air tube cylinder 1, is farthest evenly distributed on plastic surface.
Content described in this description embodiment is only enumerating of way of realization to inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention is also and conceive the equivalent technologies means that can expect according to the present invention in those skilled in the art.
Claims (6)
1. ring-type arc air-out type extraneous gas aid injection molding air tube, is characterized in that: comprise air tube cylinder, the air tube core of hollow, the inlet end of described air tube cylinder arranges needle cycle step; The outlet side of described air tube cylinder arranges internal thread; Described air tube core comprises core body and end cap, and described end cap is fixed on the end of described core body; The external thread section that the setting of described core body end is mated with the internal thread of air tube cylinder, the front end of described core body is with tapering, and the end of described core body is connected with the stub end of the tapering of described front end; The external thread section bilateral symmetry of described core body end is scabbled, and forms and scabbles place; Described air tube core and described air tube cylinder form gas passage jointly; The port inner wall of described outlet side is arranged to arc, and described end cap and described end junction have radian, and jointly forms arc airway with the arc of described outlet side.
2. ring-type arc air-out type extraneous gas aid injection molding air tube as claimed in claim 1, is characterized in that: the front end of described core body is offered groove.
3. ring-type arc air-out type extraneous gas aid injection molding air tube as claimed in claim 1, is characterized in that: the outer dia of described needle cycle step is greater than the outer dia of the cylindrical shell of described air tube cylinder.
4. ring-type arc air-out type extraneous gas aid injection molding air tube as claimed in claim 2, is characterized in that: described needle cycle step and moving platen arrange cannelure between inserting.
5. ring-type arc air-out type extraneous gas aid injection molding air tube as claimed in claim 4, is characterized in that: resistant to elevated temperatures O RunddichtringO is installed in described cannelure.
6. ring-type arc air-out type extraneous gas aid injection molding air tube as claimed in claim 5, is characterized in that: the height of described air tube cylinder is greater than the moving platen height of fitting plane of inserting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210187390.9A CN102837393B (en) | 2012-06-05 | 2012-06-05 | Annular arc discharge-type auxiliary injection molding air needle of external gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210187390.9A CN102837393B (en) | 2012-06-05 | 2012-06-05 | Annular arc discharge-type auxiliary injection molding air needle of external gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102837393A CN102837393A (en) | 2012-12-26 |
| CN102837393B true CN102837393B (en) | 2014-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210187390.9A Active CN102837393B (en) | 2012-06-05 | 2012-06-05 | Annular arc discharge-type auxiliary injection molding air needle of external gas |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201338373Y (en) * | 2008-12-30 | 2009-11-04 | 中山志和家电制品有限公司 | Air needle for air-assisted plastic injection molding system |
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2012
- 2012-06-05 CN CN201210187390.9A patent/CN102837393B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201338373Y (en) * | 2008-12-30 | 2009-11-04 | 中山志和家电制品有限公司 | Air needle for air-assisted plastic injection molding system |
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| Publication number | Publication date |
|---|---|
| CN102837393A (en) | 2012-12-26 |
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