CN203510648U - Valve needle guide sleeve and needle valve hot runner system using same - Google Patents
Valve needle guide sleeve and needle valve hot runner system using same Download PDFInfo
- Publication number
- CN203510648U CN203510648U CN201320682804.5U CN201320682804U CN203510648U CN 203510648 U CN203510648 U CN 203510648U CN 201320682804 U CN201320682804 U CN 201320682804U CN 203510648 U CN203510648 U CN 203510648U
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- China
- Prior art keywords
- needle
- fairlead
- mouth
- hole
- valve
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- Expired - Fee Related
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model relates to a valve needle guide sleeve and a needle valve hot runner system using the same. The valve needle guide sleeve comprises a guide sleeve body, wherein a through hole for a valve needle to pass through is formed in the center of the body, a plurality of spirally distributed spiral blades are arranged on the side wall of the body, and a rubber passing channel for rubber to pass through is formed between the two adjacent spiral blades. According to the needle valve hot runner system using the valve needle guide sleeve, the valve needle is always in the valve needle guide sleeve, therefore, the through hole formed in the valve needle guide sleeve is coaxial with a rubber outlet, the problem that the valve needle and the rubber outlet are non-coaxial can be effectively avoided, the problem of damaging the rubber sealing surface of the valve needle and the rubber outlet of a die, as well as the problem that the clamping and deformation of the valve needle, can be further effectively avoided.
Description
Technical field
The utility model relates to fairlead, is specifically related to a kind of needle fairlead, and uses the needle valve hot flow passage system of this fairlead.
Background technology
Along with the technology of hot flow path industry develops rapidly, needle valve type hot runner system is widely used in Injection Industry, and it can economize in raw materials and reduce costs, simplify Jiao Kou, reduces molding cycle, adjust deformation of products etc.As Fig. 1 provides the structural representation of a typical needle valve type hot runner system.But needle valve type hot runner system is more complicated than general TOP-TIP, and therefore, it is high that needle valve type hot runner price is also wanted relatively.
In current needle valve type hot runner system, needle, in sealing process, there will be the axis disalignment of needle and plastic hole, and fragile needle sealing face causes sealing not tight; Destroy the cast gate of mould simultaneously, increased the maintenance cost of hot flow path, also reduced the service life of mould; And both disalignments, also can cause needle distortion during work, card pin phenomenon, the TOP-TIP series of problems such as cannot normally work.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of needle fairlead that ensures the coaxial setting in needle and plastic hole.
For addressing the above problem, the technical scheme that the utility model adopts is as follows:
A needle fairlead, comprises fairlead body, and body center is provided with the through hole that confession needle passes through, and the sidewall of body is provided with a plurality of helical blades, forms the glue groove excessively passing through for sizing material between two adjacent spiral helical blades.
Helical blade middle part is provided with protruding arcwall face.
The upper and lower end face of helical blade is equipped with arc transiting surface.
The quantity of helical blade is four.
Another object of the present utility model is to provide a kind of needle valve hot flow passage system of applying above-mentioned needle fairlead, and concrete scheme is as follows:
Apply a needle valve hot flow passage system for needle fairlead, flow distribution plate is connected between main sprue bushing and mouth body, and main sprue bushing, flow distribution plate and mouth are provided with the sizing material passage interconnecting with it; Mouth core is arranged in the sizing material passage of mouth body, mouth in-core is provided with the mouth core runner hole with sizing material channel connection, the bottom of mouth core is provided with gum outlet, and needle fairlead is arranged in the mouth core runner hole of mouth body, and the through hole in needle fairlead is coaxial with mouth body plastic hole; Needle passes the through hole that is positioned at sizing material passage, the mouth core runner hole of mouth body and is positioned at needle fairlead, and can be used for shutoff or open plastic hole.
Needle fairlead and mouth core runner hole interference fit.
Compared to existing technology, the beneficial effects of the utility model are: the needle valve hot flow passage system of the needle fairlead that use the utility model provides, because needle is always in needle fairlead, therefore, coaxial with plastic hole at the through hole that needle fairlead is installed, just can effectively avoid needle and plastic hole out-of-alignment problem, thereby effectively avoid destroying the problem of needle sealing face and mould plastic hole, also can effectively avoid the problem of card pin and needle distortion.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
The structural representation of a kind of typical needle-valve TOP-TIP that Fig. 1 provides for the utility model;
The assembling schematic diagram of the needle fairlead that Fig. 2 provides for the utility model preferred embodiment;
The structural representation of the needle fairlead that Fig. 3 provides for the utility model preferred embodiment.
1, mouth core; 2, plastic hole; 3, needle; 4, needle fairlead; 41, through hole; 42, cross glue groove; 43, arc transiting surface; 44, helical blade; 5, main sprue bushing; 6, flow distribution plate; 7, mouth body.
The specific embodiment
Below in conjunction with concrete embodiment and accompanying drawing, for the technical solution of the utility model, further explain.
As shown in Figures 2 and 3, a kind of needle fairlead 4, comprises fairlead body, and body center is provided with the through hole 41 that confession needle 3 passes through, and the sidewall of body is provided with a plurality of helical blades, forms the glue groove 42 excessively passing through for sizing material between two adjacent spiral helical blades.
The needle valve hot flow passage system of the needle fairlead 4 that use the utility model provides, because needle 3 is always in needle fairlead 4, therefore, the through hole 41 that guarantees when mounted needle fairlead 4 is coaxial with plastic hole 2, just can effectively avoid needle 3 and plastic hole 2 out-of-alignment problems, thereby the problem of effectively avoiding destroying needle 3 sealing faces and destroying mould plastic hole 2, the problem that also can effectively avoid card pin and needle 3 to be out of shape.
Meanwhile, the glue groove 42 excessively of spiral setting, can allow the melten gel flowing in 4 punishment of needle fairlead well again merge.
Helical blade middle part is provided with protruding arcwall face.Better to guarantee the smooth transition of melten gel.The upper and lower end face of helical blade is equipped with arc transiting surface 43.Arc transiting surface 43 is set and can prevents that melten gel from running into wedge angle generation transition and shearing.
The quantity of helical blade is four.
Another object of the present utility model is to provide a kind of needle valve hot flow passage system of applying above-mentioned needle fairlead 4, and concrete scheme is as follows:
As depicted in figs. 1 and 2, a kind of needle valve hot flow passage system of applying needle fairlead 4, flow distribution plate 6 is connected between main sprue bushing 5 and mouth body 7, and main sprue bushing 5, flow distribution plate 6 and mouth body 7 are provided with the sizing material passage interconnecting; Mouth core 1 is arranged in the sizing material passage of mouth body 7, in mouth core 1, be provided with the mouth core runner hole with sizing material channel connection, the bottom of mouth core 1 is provided with gum outlet, and needle fairlead 4 is arranged in the mouth core runner hole of mouth body 7, and the through hole in needle fairlead 4 41 is coaxial with mouth core 1 plastic hole 2; Needle 3 passes the through hole 41 that is positioned at sizing material passage, the mouth core runner hole of mouth body 7 and is positioned at needle fairlead 4, and can be used for shutoff or open plastic hole 2.
Needle fairlead 4 and mouth core runner hole interference fit.
Interference fit can effectively prevent needle fairlead 4 vibration in mouth core runner hole.
The needle valve hot flow passage system of the needle fairlead 4 that use the utility model provides, when cast gate need to be closed, drive unit promotes needle 3 and moves ahead, needle 3 slides in needle 3 pilot holes, force needle 3 coaxial with plastic hole 2 in sealing process, avoided like this needle 3 to train off, the possibility that needle 3 sealing faces and cast gate destroy, has improved the performance of needle valve hot flow passage system.When cast gate is opened, drive unit drives needle 3 to retreat, and needle 3 accurately returns along needle fairlead 4.And so forth, needle 3 is done rectilinear motion all the time, has greatly reduced the diastrophic possibility of needle 3.
Above-mentioned embodiment is only preferred embodiment of the present utility model; can not limit with this scope of the utility model protection, the variation of any unsubstantiality that those skilled in the art does on basis of the present utility model and replacement all belong to the utility model scope required for protection.
Claims (6)
1. a needle fairlead, is characterized in that, comprises fairlead body, and fairlead body center is provided with the through hole that confession needle passes through, and the sidewall of fairlead body is provided with a plurality of helical blades, forms the glue groove excessively passing through for sizing material between two adjacent helical blades.
2. needle fairlead according to claim 1, is characterized in that, helical blade middle part is provided with protruding arcwall face.
3. needle fairlead according to claim 1, is characterized in that, the upper and lower end face of helical blade is equipped with arc transiting surface.
4. needle fairlead according to claim 1, is characterized in that, the quantity of helical blade is four.
5. application rights requires the 1 needle valve hot flow passage system to claim 4 any one needle fairlead, it is characterized in that, flow distribution plate is connected between main sprue bushing and mouth body, and main sprue bushing, flow distribution plate and mouth are provided with the sizing material passage interconnecting with it;
Mouth core is arranged in the sizing material passage of mouth body, mouth in-core is provided with the mouth core runner hole with sizing material channel connection, the bottom of mouth core is provided with gum outlet, and needle fairlead is arranged in the mouth core runner hole of mouth body, and the through hole in needle fairlead is coaxial with mouth body plastic hole;
Needle passes the through hole that is positioned at sizing material passage, the mouth core runner hole of mouth body and is positioned at needle fairlead, and can be used for shutoff or open plastic hole.
6. needle valve hot flow passage system according to claim 5, is characterized in that, needle fairlead and mouth core runner hole interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682804.5U CN203510648U (en) | 2013-10-31 | 2013-10-31 | Valve needle guide sleeve and needle valve hot runner system using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320682804.5U CN203510648U (en) | 2013-10-31 | 2013-10-31 | Valve needle guide sleeve and needle valve hot runner system using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203510648U true CN203510648U (en) | 2014-04-02 |
Family
ID=50369630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320682804.5U Expired - Fee Related CN203510648U (en) | 2013-10-31 | 2013-10-31 | Valve needle guide sleeve and needle valve hot runner system using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203510648U (en) |
-
2013
- 2013-10-31 CN CN201320682804.5U patent/CN203510648U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20201031 |