CN201140507Y - Water needle applied to water-assisted molding production - Google Patents
Water needle applied to water-assisted molding production Download PDFInfo
- Publication number
- CN201140507Y CN201140507Y CNU2007203034607U CN200720303460U CN201140507Y CN 201140507 Y CN201140507 Y CN 201140507Y CN U2007203034607 U CNU2007203034607 U CN U2007203034607U CN 200720303460 U CN200720303460 U CN 200720303460U CN 201140507 Y CN201140507 Y CN 201140507Y
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- Prior art keywords
- water
- core bar
- needle guard
- needle
- spring
- 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
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000000465 moulding Methods 0.000 title abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims description 32
- 239000007924 injection Substances 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 31
- 239000003814 drug Substances 0.000 claims description 26
- 229940079593 drug Drugs 0.000 claims description 26
- 238000007493 shaping process Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 abstract description 6
- 230000004907 flux Effects 0.000 abstract 1
- 239000010865 sewage Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 239000012736 aqueous medium Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007373 indentation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009972 noncorrosive effect Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a water needle which is applied to water-assisted molding production and comprises a needle sleeve, a core rod in the needle sleeve, a spring, a limit ring and a seal part, wherein the needle sleeve is opened with a water inlet and a water outlet, a through-hole for supporting the center of the limit ring is the water inlet, the core rod is opened with an elongated through-hole to form a gas channel, one end of the water needle which is inserted into a mould cavity, the end portions of the core rod and the needle sleeve are matched with each other to seal a channel which is connected with water and the mould cavity, wherein the core rod opens an inlet channel or a drain channel under the driven of the spring and influent pressure or gas intake pressure, the co-operating of the end portions and intelligent setting of sizes of a small airflow hole of the core rod prevent plastic flux bodies in the mould cavity to be entered into the water needle. The water needle which is applied to water-assisted molding production achieves zero leakage of gas and water due to directly sealing between the needle sleeve and moulding and between the core rod and the needle sleeve, the water needle can achieve all water supply and sewage functions in water-assisted molding technique such as water inflow, outflow and air-in, and which has the advantages of simple and compact structure and is convenient for achieving standardization. The utility model is used for water-assisted molding production and is a key device in water-assisted molding technique.
Description
Technical field
The utility model relates to plastic hollow injection moulding production system, especially relates to a kind of liquid drugs injection that water shaping is produced that is applied to.
Background technology
In the injection industry field, the water aided injection forming technology is a new technique that just grew up in recent years, belongs to the fluid-assisted injection technology with gas assisted injection molding technology.Compare through the comparatively ripe gas-assisted injection molding technology of more than ten years development, the water shaping technology also is in the starting stage, but aqueous medium has advantages such as Incoercibility, high thermoconductivity, high specific heat capacity with respect to gas, makes water shaping have shorter cool time and molding cycle, higher product quality (inner surface is smooth, thickness is even etc.), lower production cost and the advantages such as production efficiency of Geng Gao than gas assisted molding.
The key issue of water shaping technology is into water and draining, and corresponding sealing problem.Drainage problem particularly, the solution that exists has two kinds at present:
First kind is gravity drainage method, at water inlet draining valve is installed, and the water in the plastic part is discharged under the gravity effect by water inlet.This method has that efficient is low, the halfway defective of draining, and to the specific (special) requirements that is furnished with of mould design and water inlet.
Second kind is the air inlet drainage, discharges residual water by the dry air that is pressed in the product.By the air tube of extra setting, can near water inlet, the example at the mould other end be arranged also.This method efficient height, draining is thorough.
At present at home, be applied to liquid drugs injection development or the blank that water shaping is produced.In the world, do not see the liquid drugs injection patent or the correlative study report of the close-coupled that integrates water inlet, air inlet and draining yet.
Summary of the invention
The purpose of this utility model is to provide a kind of liquid drugs injection that water shaping is produced that is applied to, being used to into water, the circulation of air inlet draining control liquid breaks, interface as water shaping injection water generation equipment and mould, realize the sealing of water, gas, prevent that melt from entering into, the draining runner, be beneficial to the into unobstructed and draining rapidly and thoroughly of water, be applicable to high efficiency plastic products production.
The technical scheme that its technical problem that solves the utility model adopts is:
Support limit ring and needle guard are housed in the hole of mould, the small end of needle guard reaches in the die cavity of mould, hollow core bar broad in the middle and small in ends is housed in the needle guard, large diameter part forms with needle guard and is slidingly matched in the middle of the core bar, one end of core bar and the external part of needle guard also form and are slidingly matched, and core bar one end is with first spring, and an end of first spring withstands on the core bar one side shaft shoulder, and the other end of first spring withstands on the support limit ring, and core bar one end has radially small through hole; The core bar opposite side is with the water conservancy diversion spacing ring, the middle part of water conservancy diversion spacing ring and core bar form and are slidingly matched, the two ends of water conservancy diversion spacing ring and core bar keep circular gap, second spring housing is on the other end of core bar, one end of second spring withstands on the core bar opposite side shaft shoulder, the other end of second spring withstands on the water conservancy diversion spacing ring, adds retaining ring sealing with first O-ring seals between core bar and the needle guard, between needle guard and the mould with second O-ring seals and sealing; Have air inlet runner, water inlet flow channel and draining runner on the mould; One end of air inlet runner is communicated with the through hole of support limit ring, and the other end of air inlet runner is communicated with the air-powered electromagnetic reversal valve; One end of water inlet flow channel is communicated with the water inlet of needle guard, and the other end of water inlet flow channel is communicated with the first hydraulic pressure electro-hydraulic reversing valve; One end of draining runner is communicated with the discharge outlet of needle guard, and the other end of draining runner is communicated with the second hydraulic pressure electro-hydraulic reversing valve.
Described hollow core bar has axial slightness hole in the middle of being, through hole is stepped, and is big near the internal diameter of air inlet runner one side, little near the internal diameter of draining runner one side.
The beneficial effect that the utlity model has is:
(1) adopt cooperating of needle guard and core bar right-hand member head, core bar side-to-side movement indentation or stretch out needle guard, formation advance drainage channel, reduced the water inlet resistance, be of value to draining simultaneously, and prevent that effectively melt from entering in the liquid drugs injection, help success and assurance product quality that water shaping is produced.
(2) liquid of core bar and water conservancy diversion spacing ring formation hinders, and has improved the dynamic property of liquid drugs injection, has reduced impact, and the side-to-side movement of liquid drugs injection core bar is stablized flexibly, helps the control of water shaping water injection pressure.
(3) all seal between the liquid drugs injection installing hole of core bar and needle guard and needle guard and mould, efficiently solve the sealing problem of water, and make liquid drugs injection be applicable to the condition of work of Intermediate High Pressure with O-ring seals.
(4) this liquid drugs injection has simple and compact for structure, good manufacturability, is easy to standardized characteristics, and Assembly part is few and mostly be standard component, is suitable for producing in serial form.
(5) all assembly parts of this liquid drugs injection all adopt anti-corrosion non-corrosive material, can guarantee that liquid drugs injection has the long life-span in the aqueous medium working environment of water shaping production.
Description of drawings
Fig. 1 is a structural principle schematic diagram of the present utility model.
Fig. 2 is a water working state schematic representation into.
Fig. 3 is the drainage works view.
Among the figure: 1. support limit ring, 2. spring, 3. core bar, 4. needle guard, 5.O shape sealing ring, 6. back-up ring, 7.O shape sealing ring, 8. spring, 9. water conservancy diversion spacing ring, 10.O the shape sealing ring, 11. die cavities, 12. moulds, 13. the hydraulic pressure electro-hydraulic reversing valve, 14. draining runners, 15. hydraulic pressure electro-hydraulic reversing valves, 16. water inlet flow channel, 17. air-powered electromagnetic reversal valves, 18. air inlet runners.
The specific embodiment
As shown in Figure 1, the utility model liquid drugs injection of being applied to water shaping production comprises: core bar 3, needle guard 4, spring 2 and 8, support limit ring 1, water conservancy diversion spacing ring 9, O- ring seals 5 and 10, back-up ring 6 and O-ring seals 7.Support limit ring 1 and needle guard 4 are installed in the liquid drugs injection installing hole of mould 12, the taper small end of needle guard 4 reaches in the die cavity 11 of mould 12, it is tapered that needle guard 4 right-hand member small ends stretch into the part of die cavity 11, make and take out product easily and reduced the vestige on product surface, big and the small in ends hollow core bar 3 of mid diameter is housed in the needle guard 4, large diameter part forms with needle guard 4 and is slidingly matched in the middle of the core bar 3, one end of core bar 3 and the external part of needle guard 4 also form and are slidingly matched, and has a sealing function, seal water in the needle guard 4 to the path of die cavity 11, prevent that the plastic melt in the die cavity 11 from entering in the needle guard 4, core bar 3 one ends are with spring 2, one end of spring 2 withstands on the core bar 3 one side shafts shoulder, and the other end of spring 2 withstands on the support limit ring 1, and core bar 3 one ends have radially small through hole; Core bar 3 opposite sides are with water conservancy diversion spacing ring 9, the middle part of water conservancy diversion spacing ring 9 and core bar 3 form and are slidingly matched, the two ends of water conservancy diversion spacing ring 9 and core bar 3 keep circular gap, has the effect that liquid hinders at an end water conservancy diversion spacing ring 9 with the circular gap that core bar 3 forms near spring 8, spring 8 is enclosed within on the other end of core bar 3, one end of spring 8 withstands on the core bar 3 opposite side shaft shoulders, the other end of spring 8 withstands on the water conservancy diversion spacing ring 9, add back-up ring 6 sealings with O-ring seals 7 between core bar 3 and the needle guard 4, seal with O- ring seals 5 and 10 between needle guard 4 and the mould 12; Have air inlet runner 18, water inlet flow channel 16 and draining runner 14 on the mould 12; One end of air inlet runner 18 is communicated with the through hole of support limit ring 1, and the other end of air inlet runner 18 is communicated with air-powered electromagnetic reversal valve 17; One end of water inlet flow channel 16 is communicated with the water inlet of needle guard 4, and the other end of water inlet flow channel 16 is communicated with hydraulic pressure electro-hydraulic reversing valve 15; One end of draining runner 14 is communicated with the discharge outlet of needle guard 4, and the other end of draining runner 14 is communicated with hydraulic pressure electro-hydraulic reversing valve 13.
As shown in Figure 2, when hydraulic pressure electro-hydraulic reversing valve 15 switches to on-position, when air-powered electromagnetic reversal valve 17 and hydraulic pressure electro-hydraulic reversing valve 13 keep disconnecting, water in the water inlet flow channel 16 promotes core bar 3 to left movement, left end until core bar 3 pushes up support limit ring 1, the formation path is opened in being slidingly matched of core bar 3 right-hand member heads and needle guard 4 right-hand members, and the water in the water inlet flow channel 16 can enter in the die cavity 11 by water conservancy diversion spacing ring 9 and needle guard 4 right-hand members; At core bar 3 when left movement is opened, because the right-hand member head of core bar 3 can be fully retracted in the needle guard 4, the water of water inlet flow channel 16 enters die cavity 11 by the anchor ring between core bar 3 right-hand member heads and needle guard 4 right-hand members, helps to increase the flow area in the confined space, has reduced the water inlet resistance.
As shown in Figure 3, when hydraulic pressure electro-hydraulic reversing valve 13 and pneumatic solenoid directional control valve 17 switch to on-position, when hydraulic pressure electro-hydraulic reversing valve 15 disconnects, gas in the air inlet runner 18 promotes core bar 3 and moves right, right part until core bar 3 pushes up water conservancy diversion spacing ring 9, the formation path is opened in being slidingly matched of core bar 3 right-hand member heads and needle guard 4 right-hand members, core bar 3 right-hand member heads can stretch out needle guard 4 fully, the gas of air inlet runner 18 enters die cavity 11 by the elongated hole on the core bar 3, water in the compressing plastic part is entered in the needle guard 4 by core bar 3 right-hand member head circumference, enter draining runner 14 by water conservancy diversion spacing ring 9, being furnished with of air inlet position and draining position benefits fast and draining completely.
Have axial slightness hole in the middle of the core bar 3, through hole is stepped, and the left end internal diameter is big, and the internal diameter of right-hand member is small enough to prevent that the plastic melt in the die cavity 11 from entering in the needle guard 4; The left end of core bar 3 has radially small through hole, and is communicated with axial slightness hole, and when core bar 3 left ends pushed up support limit ring 1, the gases in the air inlet runner 18 still can be by small through hole actuating pressure radially to the left surface of the core bar 3 middle part shaft shoulders.
Adopt being slidingly matched of needle guard 4 and core bar 3 right-hand member heads, core bar 3 side-to-side movement indentations or stretch out needle guard 4, what form advances drainage channel, reduced the water inlet resistance, be of value to draining simultaneously, and prevent that effectively plastic melt from entering in the liquid drugs injection, and have the compact structure that integrates water inlet, air inlet and draining, be the utility model liquid drugs injection most important character.
All seal between the liquid drugs injection installing hole of core bar 3 and needle guard 4 and needle guard 4 and mould 12 with O-ring seals, the form of this direct sealing is good in mesohigh aqueous medium condition lower seal performance, efficiently solve the sealing problem of water, make liquid drugs injection be applicable to the condition of work of Intermediate High Pressure.
All assembly parts of this liquid drugs injection all adopt anti-corrosion non-corrosive material, can guarantee that liquid drugs injection has the long life-span in the aqueous medium working environment of water shaping production.In addition, that this liquid drugs injection has is simple and compact for structure, good manufacturability, be easy to standardized characteristics, and Assembly part is few and mostly be standard component, is suitable for producing in serial form.
Claims (2)
1, a kind of liquid drugs injection that is applied to water shaping production, it is characterized in that: support limit ring (1) and needle guard (4) are housed in the hole of mould (12), the small end of needle guard (4) reaches in the die cavity (11) of mould (12), hollow core bar (3) broad in the middle and small in ends is housed in the needle guard (4), large diameter part forms with needle guard (4) and is slidingly matched in the middle of the core bar (3), the external part of one end of core bar (3) and needle guard (4) also forms and is slidingly matched, core bar (3) one ends are with first spring (2), one end of first spring (2) withstands on core bar (3) the one side shafts shoulder, and the other end of first spring (2) withstands on the support limit ring (1), and core bar (3) one ends have radially small through hole; Core bar (3) opposite side is with water conservancy diversion spacing ring (9), the middle part of water conservancy diversion spacing ring (9) and core bar (3) form and are slidingly matched, the two ends of water conservancy diversion spacing ring (9) and core bar (3) keep circular gap, second spring (8) is enclosed within on the other end of core bar (3), one end of second spring (8) withstands on core bar (3) the opposite side shaft shoulder, the other end of second spring (8) withstands on the water conservancy diversion spacing ring (9), add back-up ring (6) sealing with first O-ring seals (7) between core bar (3) and the needle guard (4), seal with second O-ring seals (5) and (10) between needle guard (4) and the mould (12); Have air inlet runner (18), water inlet flow channel (16) and draining runner (14) on the mould (12); One end of air inlet runner (18) is communicated with the through hole of support limit ring (1), and the other end of air inlet runner (18) is communicated with air-powered electromagnetic reversal valve (17); One end of water inlet flow channel (16) is communicated with the water inlet of needle guard (4), and the other end of water inlet flow channel (16) is communicated with the first hydraulic pressure electro-hydraulic reversing valve (15); One end of draining runner (14) is communicated with the discharge outlet of needle guard (4), and the other end of draining runner (14) is communicated with the second hydraulic pressure electro-hydraulic reversing valve (13).
2. a kind of liquid drugs injection that water shaping is produced that is applied to according to claim 1, it is characterized in that: described hollow core bar (3) has axial slightness hole in the middle of being, through hole is stepped, and is big near the internal diameter of air inlet runner (18) one sides, little near the internal diameter of draining runner (14) one sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203034607U CN201140507Y (en) | 2007-12-27 | 2007-12-27 | Water needle applied to water-assisted molding production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203034607U CN201140507Y (en) | 2007-12-27 | 2007-12-27 | Water needle applied to water-assisted molding production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201140507Y true CN201140507Y (en) | 2008-10-29 |
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ID=40068221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203034607U Expired - Fee Related CN201140507Y (en) | 2007-12-27 | 2007-12-27 | Water needle applied to water-assisted molding production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201140507Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690885A (en) * | 2015-01-31 | 2015-06-10 | 北京中拓机械集团有限责任公司 | Water jet device for water injection moulding |
-
2007
- 2007-12-27 CN CNU2007203034607U patent/CN201140507Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690885A (en) * | 2015-01-31 | 2015-06-10 | 北京中拓机械集团有限责任公司 | Water jet device for water injection moulding |
| CN104690885B (en) * | 2015-01-31 | 2017-12-12 | 北京中拓机械集团有限责任公司 | The auxiliary use in injection molding water needle device of water |
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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: 20081029 Termination date: 20101227 |