CN205467080U - Glued structure of leak protection of needle valve formula hot runner - Google Patents
Glued structure of leak protection of needle valve formula hot runner Download PDFInfo
- Publication number
- CN205467080U CN205467080U CN201620098197.1U CN201620098197U CN205467080U CN 205467080 U CN205467080 U CN 205467080U CN 201620098197 U CN201620098197 U CN 201620098197U CN 205467080 U CN205467080 U CN 205467080U
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- China
- Prior art keywords
- needle
- hot runner
- pin hole
- glue
- leakage
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- 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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- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a glued structure of leak protection of needle valve formula hot runner, including needle and needle cover, the needle is worn to overlap in the needle cover, needle cover inner wall is equipped with annular glue storage tank. The annular glue storage tank's of this kind of needle valve formula hot runner effect is: when the needle cover can't stop the pressure of plastic with the cooperation steric hindrance of needle cover, the plastic can be followed its fit clearance and spilled over, and the plastic that spills over will stop in annular glue storage tank, and the plastic in the annular glue storage tank can prevent also that the plastic from continuing to spill over after the long -time heating carbonization, play the effect of sealing member.
Description
Technical field
This utility model relates to Hot runner Technology field, the glue-leakage-resistant structure of particularly a kind of needle valve type hot runner (closed type hot flow passage system).
Background technology
At present at the commonly used hot runner mould of Injection Industry, closed type hot flow passage system is increasingly looked at by parent, but in the needle-valve system of existing closed type hot flow passage system, needle requires the highest with valve needle cover quality of fit, if there is any scratch in cooperation face in production process, easily lead to system leakage glue, so that change needle and valve needle cover.It addition, about the fitness requirement of needle Yu valve needle cover, being generally directed to conventional injection molding design needle is 3-8um with coordinating of valve needle cover, and under unconventional injection high pressure, this fitness then there will be leakage glue phenomenon, if gap is done little again, will card pin.Coordinate not in place between needle with valve needle cover for this reason, it may be necessary to properly settle and leak the problem of leaking glue under glue or unconventional injection, to reduce after-sale service problem, reduce hot flow path cost, and ensure that plastic cement products normally produces and quality.
See shown in Fig. 6 and Fig. 7, the structural representation of the most existing two kinds of closed type hot flow passage systems.Wherein, closed type hot flow passage system shown in Fig. 6, it includes the hot flow path assembly 10 being provided with needle 3 and valve needle cover 2, and the corresponding needle 3 of hot flow path assembly 10 is provided with pin hole 6, and it is outer and be arranged in one end of pin hole 6 that valve needle cover 2 is set in needle 3.Described needle 3 is connected with the piston 1 of driving cylinder.When valve needle cover coordinates not in place and when causing plastic cement to overflow from its fit clearance with valve needle cover, and the plastic cement of spilling will enter in driving cylinder, so that system cisco unity malfunction.
Utility model content
The purpose of this utility model is to provide a kind of simple and reasonable for structure, reduce the glue-leakage-resistant structure of the needle valve type hot runner causing Lou glue and contingency question because of needle and valve needle cover quality of fit problem, to overcome the deficiencies in the prior art, and higher injection requirement can be met, such as high speed and high pressure injection, ultra-long time pressurize injection etc..
The purpose of this utility model is achieved in that
A kind of glue-leakage-resistant structure of needle valve type hot runner, including needle and valve needle cover, needle is set in valve needle cover, it is characterised in that: described valve needle cover inwall is provided with annular storage glue groove.The effect of the annular storage glue groove of this kind of needle valve type hot runner is: when valve needle cover and when coordinating the pressure that steric hindrance can't stop plastic cement of valve needle cover, plastic cement can overflow from its fit clearance, the plastic cement overflowed will rest in annular storage glue groove, plastic cement in annular storage glue groove is after carbonization of being heated for a long time, also can prevent plastic cement from continuing to overflow, play the effect of sealing member.
The purpose of this utility model can also use techniques below measure to solve:
As more specifically scheme, the glue-leakage-resistant structure of described needle valve type hot runner also includes that hot flow path assembly, hot flow path assembly correspondence needle are provided with pin hole, valve needle cover in being arranged on one end of pin hole.
Degree of depth D of described annular storage glue groove is 0.1mm to 2mm；Preferably, degree of depth D of described annular storage glue groove is 0.3mm to 1mm.
The width H of described annular storage glue groove is 1mm to 15mm；Preferably, the width H of described annular storage glue groove is 2mm to 8mm.
Described hot flow path assembly includes nozzle body and cast gate department, and described pin hole runs through nozzle body two ends, and described valve needle cover is arranged on nozzle and is positioned at pin hole one end, and cast gate department is arranged on the pin hole other end.
Cast gate department is pointed in described needle one end, and the needle other end stretches out and is in transmission connection with driving cylinder outside pin hole.
Described driving cylinder includes cylinder body and the piston being arranged in cylinder body, and the described needle other end is connected with piston in stretching into cylinder body.
As more specifically another program, described hot flow path assembly includes flow distribution plate, nozzle body and cast gate department, flow distribution plate and nozzle body closely cooperate, described pin hole runs through flow distribution plate and nozzle body, described valve needle cover is arranged on flow distribution plate and is positioned at pin hole one end, and cast gate department is arranged on nozzle and is positioned at the pin hole other end.
The beneficial effects of the utility model are as follows:
(1) the glue-leakage-resistant structure of this kind of needle valve type hot runner is to offer the annular storage glue groove that a circle is small-sized in valve needle cover, even if coordinating inaccuracy at needle with valve needle cover, in the case of leakage glue, a small amount of plastic cement will be stopped in annular storage glue groove, the effect of sealing ring can be played after plastic cement is heated carbonization for a long time, not only reduce the order again of needle and valve needle cover, also can reduce the difficulty of processing of needle and valve needle cover, reduce the cost of hot flow path, and ensure that plastic cement products normally produces and quality；
(2), in annular storage glue groove after plastic cement carbonization, there is fitness accurately its shape and needle periphery, so sealing effectiveness is fine；It addition, carbon particle is good lubriation material in plastic carbon compound so that valve needle movements is smooth and easy, its motion is not impacted.
Accompanying drawing explanation
Fig. 1 is this utility model one example structure schematic diagram.
Fig. 2 is structural representation at A in Fig. 1.
Fig. 3 is that in Fig. 2, annular storage glue groove enters structural representation after glue.
Fig. 4 is another example structure schematic diagram of this utility model.
Fig. 5 is structural representation at B in Fig. 4.
Fig. 6 is an embodiment structural representation in prior art.
Fig. 7 is another embodiment structural representation in prior art.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is further described by embodiment.
Embodiment one, see shown in Fig. 1 and Fig. 2, a kind of glue-leakage-resistant structure of needle valve type hot runner, including the hot flow path assembly 10 being provided with needle 3 and valve needle cover 2, the corresponding needle 3 of hot flow path assembly 10 is provided with pin hole 6, valve needle cover 2 is set in outside needle 3 and is arranged in one end of pin hole 6, and described valve needle cover 2 inwall is provided with annular storage glue groove 21.
The degree of depth D about 0.5mm of described annular storage glue groove 21, the width H about 4mm of annular storage glue groove 21.
Described hot flow path assembly 10 includes that nozzle body 4 two ends are run through in nozzle body 4 and cast gate department 5, described pin hole 6, and described valve needle cover 2 is arranged on nozzle body 4 and is positioned at pin hole 6 one end, and cast gate department 5 is arranged on pin hole 6 other end.
Cast gate department 5 is pointed in described needle 3 one end, and needle 3 other end stretches out and is in transmission connection with driving cylinder outside pin hole 6.Described driving cylinder includes cylinder body (not shown) and the piston 1 being arranged in cylinder body, and described needle 3 other end is connected with piston 1 in stretching into cylinder body.
Its operation principle is: when the pressure that valve needle cover 2 and needle 1 set coordinates not in place or cooperation steric hindrance to can't stop plastic cement, plastic cement can overflow from its fit clearance, the plastic cement overflowed will rest in annular storage glue groove 21, plastic cement in annular storage glue groove 21 is heated for a long time carbonization, forms a circle sealing member 7(as shown in Figure 3), play the effect of sealing, prevent plastic cement from draining in piston 1, affect the performance of piston packing, meanwhile, also can prevent plastic cement from continuing to overflow.
Embodiment two, see shown in Fig. 4 and Fig. 5, a kind of glue-leakage-resistant structure of needle valve type hot runner, including the hot flow path assembly 10 being provided with needle 3 and valve needle cover 2, the corresponding needle 3 of hot flow path assembly 10 is provided with pin hole 6, valve needle cover 2 is set in outside needle 3 and is arranged in one end of pin hole 6, and described valve needle cover 2 inwall is provided with annular storage glue groove 21.
The degree of depth D about 0.5mm of described annular storage glue groove 21, the width H about 4mm of annular storage glue groove 21.
Described hot flow path assembly 10 includes flow distribution plate 9, nozzle body 4 and cast gate department (not shown), flow distribution plate 9 and nozzle body 4 closely cooperate, described pin hole 6 runs through flow distribution plate 9 and nozzle body 4, described valve needle cover 2 is arranged on flow distribution plate 9 and is positioned at pin hole 6 one end, and cast gate department is arranged on nozzle body 4 and is positioned at pin hole 6 other end.
Cast gate department is pointed in described needle 3 one end, and needle 3 other end stretches out and is in transmission connection with driving cylinder outside pin hole 6.
Described driving cylinder includes cylinder body 8 and the piston 1 being arranged in cylinder body 8, and described needle 3 other end is connected with piston 1 in stretching into cylinder body 8.
The glue-leakage-resistant principle that in the present embodiment, annular storage glue groove 21 plays is consistent with principle in embodiment, is not described in detail in this.
Claims (10)
1. a glue-leakage-resistant structure for needle valve type hot runner, including needle (3) and valve needle cover (2), needle (3) is set in valve needle cover (2), it is characterised in that: described valve needle cover (2) inwall is provided with annular storage glue groove (21).
The glue-leakage-resistant structure of needle valve type hot runner the most according to claim 1, it is characterised in that: degree of depth D of described annular storage glue groove (21) is 0.1mm to 2mm.
The glue-leakage-resistant structure of needle valve type hot runner the most according to claim 2, it is characterised in that: degree of depth D of described annular storage glue groove (21) is 0.3mm to 1mm.
4. according to the glue-leakage-resistant structure of needle valve type hot runner described in claim 1 or 2 or 3, it is characterised in that: the width H of described annular storage glue groove (21) is 1mm to 15mm.
The glue-leakage-resistant structure of needle valve type hot runner the most according to claim 4, it is characterised in that: the width H of described annular storage glue groove (21) is 2mm to 8mm.
The glue-leakage-resistant structure of needle valve type hot runner the most according to claim 1, it is characterised in that: also including hot flow path assembly (10), the corresponding needle (3) of hot flow path assembly (10) is provided with pin hole (6), valve needle cover (2) in being arranged on one end of pin hole (6).
The glue-leakage-resistant structure of needle valve type hot runner the most according to claim 6, it is characterized in that: described hot flow path assembly (10) includes nozzle body (4) and cast gate department (5), described pin hole (6) runs through nozzle body (4) two ends, described valve needle cover (2) is arranged on nozzle body (4) and above and is positioned at pin hole (6) one end, and cast gate department (5) is arranged on pin hole (6) other end.
The glue-leakage-resistant structure of needle valve type hot runner the most according to claim 6, it is characterized in that: described hot flow path assembly (10) includes flow distribution plate (9), nozzle body (4) and cast gate department (5), flow distribution plate (9) and nozzle body (4) closely cooperate, described pin hole (6) runs through flow distribution plate (9) and nozzle body (4), described valve needle cover (2) is arranged on flow distribution plate (9) and above and is positioned at pin hole (6) one end, and cast gate department (5) is arranged on nozzle body (4) and above and is positioned at pin hole (6) other end.
9. according to the glue-leakage-resistant structure of needle valve type hot runner described in claim 7 or 8, it is characterised in that cast gate department (5) is pointed in described needle (3) one end, and needle (3) other end stretches out pin hole (6) and is in transmission connection with driving cylinder outward.
The most according to claim 9, the glue-leakage-resistant structure of needle valve type hot runner, it is characterised in that described driving cylinder includes cylinder body (8) and the piston (1) being arranged in cylinder body (8), described needle (3) other end is connected with piston (1) in stretching into cylinder body (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620098197.1U CN205467080U (en) | 2016-02-01 | 2016-02-01 | Glued structure of leak protection of needle valve formula hot runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620098197.1U CN205467080U (en) | 2016-02-01 | 2016-02-01 | Glued structure of leak protection of needle valve formula hot runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205467080U true CN205467080U (en) | 2016-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620098197.1U Expired - Fee Related CN205467080U (en) | 2016-02-01 | 2016-02-01 | Glued structure of leak protection of needle valve formula hot runner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205467080U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426800A (en) * | 2016-09-23 | 2017-02-22 | 东莞市热恒注塑科技有限公司 | Large hot runner system without interfering system operation after glue leakage |
| CN109366902A (en) * | 2018-12-07 | 2019-02-22 | 柳道万和(苏州)热流道系统有限公司 | Needle fairlead component and hot runner system with it |
-
2016
- 2016-02-01 CN CN201620098197.1U patent/CN205467080U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106426800A (en) * | 2016-09-23 | 2017-02-22 | 东莞市热恒注塑科技有限公司 | Large hot runner system without interfering system operation after glue leakage |
| CN106426800B (en) * | 2016-09-23 | 2019-05-24 | 东莞市热恒注塑科技有限公司 | A kind of leak adhesive large-scale hot runner system that interference system is not run |
| CN109366902A (en) * | 2018-12-07 | 2019-02-22 | 柳道万和(苏州)热流道系统有限公司 | Needle fairlead component and hot runner system with it |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20190201 |