CN101468511B - Passive pin valve - Google Patents
Passive pin valve Download PDFInfo
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- CN101468511B CN101468511B CN2007101733828A CN200710173382A CN101468511B CN 101468511 B CN101468511 B CN 101468511B CN 2007101733828 A CN2007101733828 A CN 2007101733828A CN 200710173382 A CN200710173382 A CN 200710173382A CN 101468511 B CN101468511 B CN 101468511B
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- butt joint
- joint body
- runner
- valve
- valve nozzle
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- 239000007924 injection Substances 0.000 claims abstract description 38
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- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 241001093219 Osyris Species 0.000 description 2
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Abstract
The invention relates to a passive type pin valve. The pin valve comprises a valve nozzle, a first flow passage interconnecting body, a second flow passage interconnecting body, a valve pin, a push rod, a spring, a pouring port connecting piece and a flange disc; one end of the valve nozzle is provided with a cone body with a central feed injection port; the other end of the valve nozzle has a cavity body structure; the first flow passage interconnecting body and the second flow passage interconnecting body are arranged inside the cavity body structure of the valve nozzle and provided with central pylomes; the side of each pylome is also provided with at least one shunting passage communicated with the central feed injection port of the valve nozzle; the valve pin is arranged in the central feed injection port of the valve nozzle and the central pylome of the first flow passage interconnecting body; the push rod is arranged inside a cavity body of the second flow passage interconnecting body and is of an inverse T type; one end of the push rod is supported against one end of the valve pin; the spring is sleeved on a push rod body; one end of the spring is supported against the T type end; one side end of the pouring port connecting piece is provided with a cavity body and is sleeved at one end of the second flow passage interconnecting body; the pouring port connecting piece is provided with a central feed port which is communicated with a port of the shunting passage of the second flow passage interconnecting body; and the flange disc is sleeved on the pouring port connecting piece. The passive type pin valve adopts thread connection between parts, can meet the requirement of pressure injection molding and can automatically complete the action of opening or closing the valve along the change of fluid pressure.
Description
Technical field
The present invention relates to injection molding equipment, particularly a kind of passive pin valve.
Background technology
Passive pin valve is used for resin, rubber, gel, the processing of synthetic material (amalgam of mixed plastic, bond and powdery non-ferrous metal etc.) injection molding.
Referring to Fig. 1, the needle jet 30 that it is depicted as Japanese Fei Sha Co., Ltd. is arranged in the injection mold, and wherein, mould type central layer 10 forms die cavities 100 with mold cavity plate 20, and through adpting flange 40, needle jet 30 connects with injection machine nozzle 50 mutually.
Referring to Fig. 2, Fig. 3 a, Fig. 3 b, this needle jet 30 comprises nozzle head 301, preceding spreader 302, needle 303, spring 304, back spreader 305 and valve body 306; Establish circumferential weld structure 307 on preceding spreader 302, the back spreader 305, as runner, fluid flows through between the circumferential weld of spreader, also establishes reinforcement 308 therebetween.
There is following problem in the needle-valve of said structure:
1. needle valve structure intensity difference,
The circumferential weld structure 307 of establishing on spreader 302, the back spreader 305 before its runner adopts; The intensity and the structural stability of this thin-wall construction are very poor; Especially in requiring the confined space of miniaturization, also occupied very large space; That has caused nozzle head and valve body is connected to become being threaded of two thin-wall constructions, thereby causes the bulk strength deficiency of needle-valve can't to satisfy the injection requirement under the elevated pressures condition, referring to Fig. 1, Fig. 3 a, Fig. 3 b.
2. the pressure transitivity is poor,
To be fluid pass to needle according to Pascal's theorem with the pressure (pressure) of fluid to passive pin valve; The needle against the force of the spring moves backward and opens valve; The useful effect face of power transmission is the horizontal a certain perspective plane of needle always; It is that the unlatching performance of passive pin valve mainly relies on the flowability of fluid in the valve by the definition of the difference of the big or small external diameter that is immersed in that part of needle in the liquid.
The power transmission face of above-mentioned needle-valve 303a near the conical surface of needle-valve loophole place needle 303, and Fig. 1 is seen at the position 101 that the loophole place is a needle-valve to be contacted with mould; Needle-valve scatters and disappears very fast at the heat at this place; Very narrow and small because of the space around the needle power transmission face again, so the thermal capacity of this place's fluid is very little, this has accelerated the speed that this place's temperature descends; Cause the mobile non-constant of partial fluid; According to fluid mechanics principle, the pressure transmission capacity at this place sharply descends, and the temperature of needle-valve and mould contact position can receive influence and the instability of uncertain factor.
3. temperature control feedback signal poor reliability,
The temperature sensor (thermocouple) of luxuriant and rich with fragrance Osyris wightiane valve is to adopt stainless steel band 70 with its lead-out wire 60 and the fixing external mode of needle jet 30 bindings; This is a modal mode in using; Also be the least reliable mode, the contact reliability of point for measuring temperature relies on binding fully on the temperature-sensitive contact of front end and the needle-valve, in the cargo handling process of logistics and needle-valve and mould, is easy to bump it; Even damage it, referring to Fig. 4.
4. the heater encapsulating structure is complicated,
Present widely used band shell heater is general adopt in overcoat add the end cap at two, the mode of pressing with welding or folding is encapsulated in heat coil wherein, then in order to make surfacing and the outer surface of also need polishing attractive in appearance, thereby accomplishes the making of band shell heater.The common ground of this mode is: four parts are with two kinds of different blanks, and pipe is expected (being used for interior overcoat) and plate (being used for end cap), and Fei Sha company has adopted folding to press processing technology.
5. seal resistance to pressure and use life.
In the pressure injection industry especially in TOP-TIP; The seamless ring that widely used sealing ring mostly adopts metal (high temperature resistant) to be made into; Be generally copper ring or stainless steel ring, what use on the luxuriant and rich with fragrance Osyris wightiane valve is stainless steel ring, and it is mainly used in the butt joint of runner; The cross section of ring is generally solid or is closely knit multilayer volume stack structure; Utilize the microcosmic elasticity of metal to play sealing function at two interplanars, but its very difficult erosion of bearing the high temperature and high pressure flow material for a long time, so the sealing ring of this class formation is limited the service life under HTHP.
Summary of the invention
The objective of the invention is to design a kind of passive pin valve, its structural strength is largely increased, and can adapt to the injection requirement under the elevated pressures; Improve pressure and transmitted performance; Improve the reliability of temperature control feedback signal; Simplify the packaging technology of heater housing; The resistance to pressure and the service life of sealing ring have been improved.If mix heater and temperature sensor then can be used for TOP-TIP.
For achieving the above object, technical scheme of the present invention is,
A kind of passive pin valve comprises, valve nozzle, and the one of which end is the cone of band central feed injection mouth, the other end has a cavity body structure; The first flow butt joint body is installed in the valve nozzle cavity body structure, have on it one with the corresponding central through hole of valve nozzle central feed injection mouth; And this first flow butt joint body also offers at least one runner that intersect with the central through hole mouth and communicate with valve nozzle central feed injection mouth at the through hole side; The second runner butt joint body, one of which end are resisted against the first flow butt joint body in the described valve nozzle cavity body structure, and are connected with valve nozzle cavity body structure inner thread; The corresponding first flow butt joint body of this second runner butt joint body central through hole is provided with a cavity, and this cavity is also being established a cavity away from the bottom of first flow butt joint body one end; And this second runner butt joint body also offers the runner of at least one corresponding first flow butt joint body runner at the cavity side, and the another port of this runner is positioned at the second runner butt joint body, and another is distolateral; Needle; Its leading portion and back segment are corresponding respectively to be arranged in the central through hole of valve nozzle central feed injection mouth and first flow butt joint body; Described needle leading portion external diameter is less than back segment; Variation place of size external diameter is arcs of recesses, and variation place of needle size external diameter is positioned at the exit of first flow butt joint body runner near valve nozzle central feed injection mouth one end, or variation place of needle size external diameter is positioned at the intersection of each bar runner of first flow butt joint body near the outlet of valve nozzle central feed injection mouth one end; Push rod is arranged in the second runner butt joint body cavity, is inverted T shape, and its T type end is resisted against needle one end; The other end is embedded in the cavity of the second runner butt joint body cavity bottom; Spring is sheathed on the push rod shaft, and the one of which end is against T type end, and the other end is against the cavity bottom of the second runner butt joint body; The cast gate connector, the one of which side is established a cavity, and is sheathed on the second runner butt joint body away from an end of first flow butt joint body, also is provided with the central feeding mouth on it, and is connected with the runner port of the second runner butt joint body socket cast gate connector, one end; Ring flange is sheathed on the cast gate connector.
Further, the present invention also establishes a heater, and it comprises, housing, and it is made up of inside and outside cover, forms the housing ring wall of band accommodation space; Heater coil, cover lateral surface in it is set around; Described valve nozzle, the second runner butt joint body and cast gate connector lateral surface are established the lead-in wire groove vertically; The end of the nearly central feed injection mouth of valve nozzle offers the temperature sense hole; The temperature sensor senses probe is arranged in the described valve nozzle temperature sense hole, and its lead-out wire is set around the lead-in wire groove that described valve nozzle, the second runner butt joint body and cast gate connector lateral surface are established vertically.
Outwards curl in the interior cover two ends of described heater housing, overcoat is sheathed on interior cover.
Again, described valve nozzle, the second runner butt joint body and the cast gate connector lateral surface lead-in wire groove spirality of establishing vertically.
The transition annular groove that is connected with the groove that goes between is established in described valve nozzle, the second runner butt joint body and each junction of cast gate connector.
In addition, runner of the present invention is provided with three, is symmetrically distributed along valve nozzle central feed injection mouth circumference respectively.
The corresponding described cast gate connector of the described second runner butt joint body is concentric with central feeding mouth place and establishes annular groove on their contact-making surface, establish the hollow seal circle in the annular groove, and sealing circle medial surface has the annulus.In the pressure injection process, the fluid that docks in the passage produces interior expansive force in the annulus entering sealing ring of sealing ring, thus the bigger good flat seal effect of generation on the contact-making surface of the second runner butt joint body and cast gate connector of the high more interior expansive force of pressure.
Each parts of passive pin valve of the present invention adopt and are threaded, and composition can satisfy the overall structure of injection molding requirement.Valve can automatically be accomplished the action of unlatching or valve-off with the variation (greater than the spring force in the valve or smaller or equal to spring force) of incoming fluid pressure in this structure.
The fluid that gets into this runner butt joint body system centre charging aperture place is deflected from position, center (axle center), through again fluid being drawn go back to the center behind the space that gets out of the way one section arrangement spring.This structure is used for TOP-TIP and also can be used for non-TOP-TIP.
Compare with " needle jet " of Japanese Fei Sha Co., Ltd., the present invention has the following advantages:
1. structural strength is high
The spool of Fei Sha company needle-valve is made up of built-in needle and spring in the front and back spreader of butt joint; Its runner adopts circumferential weld (space between concentric large and small circle) mode; Fluid flows through between the circumferential weld of spreader, and its spreader is linked to be integral body to inside and outside two parts by six spoke muscle.The intensity and the structural stability of this thin-wall construction are very poor; Especially this spool has also occupied very large space in requiring the confined space of miniaturization; What this had caused valve nozzle and valve body is connected to become being threaded of two thin-wall constructions, thereby causes the bulk strength deficiency of this valve can't to satisfy the injection requirement under the elevated pressures condition.
Runner among the present invention is to adopt pore passage structure, and its intensity and structural stability all are greatly improved, and can adapt to the injection requirement under the elevated pressures.The present invention can be used for processing temperature below 500 ℃, to resin, rubber, gel, synthetic material (amalgam of mixed plastic, bond and powdery non-ferrous metal etc.) injection mo(u)lding processing.
2. pressure transmits the performance raising
The power transmission face of Fei Sha company needle-valve is on the conical surface near needle-valve loophole place needle; And the loophole place is the position that needle-valve contacts with mould; Needle-valve scatters and disappears very fast at the heat at this place; Very narrow and small because of the space around the needle power transmission face again, so the thermal capacity of this place's fluid is very little, this speed of having accelerated this place's temperature decline causes the mobile non-constant of partial fluid; Pressure transmission capacity according to this place of fluid mechanics principle sharply descends, and the temperature of needle-valve and mould contact position can receive influence and the instability of uncertain factor.
The main power transmission face of needle is positioned at the exit of runner among the present invention, or the exit that crosses of each bar runner, on the arc surface of needle external diameter thickness variation place.It is big that this place holds material space, so fluid is also big in this thermal capacity, the temperature at this place is high and more stable; Power transmission is steady under the runner that is symmetrically distributed; Ability is strong to remove foreign matter (sneaking into the solid granule of stream material), thereby the service behaviour and the service life of greatly having improved needle-valve has expanded right material scope.The needle-valve of Fei Sha company relatively, it runs into valve through regular meeting and does not open when injection PC (polycarbonate---belong to high temperature and mobile very poor resin).
Needle-valve of the present invention can be realized stable injection moulding processing (instructing technological parameter is 260-300 ℃, pressure 100-150MPA) under the process conditions that 260 ℃ of injection pressures of valve temperature are 80MPA, solved this problem well; Also solved the problem of Fei Sha company needle-valve incompatibility responsive to temperature resinoid (temperature range of good fluidity is very little) simultaneously, this dynamic duty temperature that mainly has benefited from needle-valve of the present invention is more stable.
3. the reliability of temperature control feedback signal improves
The temperature sensor (thermocouple) of Fei Sha company needle-valve is to adopt stainless steel band with its lead-out wire and the fixing external mode of needle-valve binding; The contact reliability of point for measuring temperature relies on binding fully on the temperature-sensitive contact of front end and the needle-valve; In the cargo handling process of logistics and needle-valve and mould, be easy to bump it, even damage it.
The present invention adopts embedded lead-in wire groove structure, and built-in lead-out wire makes needle-valve of the present invention not only compact overall structure, good looking appearance, has also eliminated the hidden danger of external temp sensor movability rapid wear simultaneously fully, has greatly improved the contact reliability of point for measuring temperature.Lead-in wire groove structure of the present invention also is applicable to active needle-valve (by the active needle-valve of cylinder or alternate manner driving).In addition, this lead-in wire groove structure also has good processing technology, only needs engine lathe in the process of processing parts itself, to accomplish along band, has just increased one procedure more and need not employ other process equipments and process once more, and is with low cost, the cost performance height.
4. simplified the packaging technology of heater housing
The needle-valve heater housing of Fei Sha company adopts folding to press processing technology.
The present invention only uses one type pipe material (being used for interior overcoat) because of the particularity of shell mechanism and adopts simple ripe pressure crimping processing technology; Need only once pressurize and to accomplish the encapsulation process of heater; Product is good in the intensity at crimping place after the moulding; And this structure has certain impact resistance when product falls accidentally, exempted the polishing operation, is particularly suitable for the electric heater manufacturing; Product shape is attractive in appearance, high conformity, and production efficiency is high, low processing cost, economic benefit is obvious.
5. the resistance to pressure and the service life of sealing ring have been improved
Adopt the stainless steel ring sealing ring to dock runner on the Fei Sha company needle-valve; The cross section of ring is generally solid or is closely knit multilayer volume stack structure; It mainly is to utilize the microcosmic elasticity of metal to play sealing function at two interplanars; But its very difficult erosion of bearing the high temperature and high pressure flow material for a long time is so the sealing ring of this class formation is limited the service life under HTHP.
Sealing ring of the present invention is the hollow-core construction of interior open loop seam, the resistance to pressure and the service life of having improved sealing ring than the former.
Description of drawings
Fig. 1 is the working state schematic representation of existing needle-valve;
Fig. 2 is the three-dimensional exploded view of existing needle-valve;
Fig. 3 a is the structure cutaway view of existing needle-valve spreader and needle;
Fig. 3 b is the A-A cutaway view of Fig. 3 a;
Fig. 4 is the temperature sensor lead-out wire binding mode sketch map of existing needle-valve;
Fig. 5 is perspective view of an embodiment of the present invention;
Fig. 6 is a structure cutaway view of the present invention;
Fig. 7 is a three-dimensional exploded view of the present invention;
Fig. 8 is a partial sectional view of the present invention;
Fig. 9 is the C-C cutaway view of Fig. 6;
Figure 10 is the left view of Fig. 6;
Figure 11 a, Figure 11 b bury the groove of temperature sensor wires and the sketch map of transition annular groove underground for needle-valve of the present invention;
Figure 12 a is the sketch map of heater housing of the present invention;
Figure 12 b is the sketch map of heater heater coil of the present invention;
Figure 12 c is the cutaway view of heater of the present invention;
Figure 12 d is the D portion enlarged diagram of Figure 12 c;
Figure 13 a is a sealing ring scheme of installation of the present invention;
Figure 13 b is the sketch map of sealing ring of the present invention;
Figure 14 a is the shape sketch map of three runners (coplane) outlet intersection on the butt joint body end face in one embodiment of the invention;
Figure 14 b is the shape sketch map of three runners (antarafacial) outlet intersection on the butt joint body end face in one embodiment of the invention.
The specific embodiment
Referring to Fig. 5～Figure 11 b, passive pin valve of the present invention comprises, valve nozzle 1, and the one of which end is the cone of band central feed injection mouth 11, the other end has a cavity body structure 12; First flow butt joint body 2 is installed in valve nozzle 1 cavity body structure 12, have on it one with valve nozzle 1 central feed injection mouth 11 corresponding central through holes 21; And this first flow butt joint body 2 also offers three runners 22,23,24 that intersect and communicate with valve nozzle central feed injection mouth 11 with 21 mouthfuls of central through holes at central through hole 21 sides, and is symmetrically distributed along valve nozzle central feed injection mouth 11 circumference;
The second runner butt joint body 3, one of which end are resisted against the first flow butt joint body 2 in described valve nozzle 1 cavity body structure 12, and are connected with valve nozzle 1 cavity body structure 12 inner threads; These second runner butt joint body, 3 corresponding first flow butt joint body 2 central through holes 21 are provided with a cavity 31, and a cavity 311 is also established in these cavity 31 bottoms; And this second runner butt joint body 3 also offers the runner 32,33,34 of three corresponding first flow butt joint body runners 22,23,24 at cavity 31 sides, and the other end of runner 32,33,34 is intersected in the other end of the second runner butt joint body 3;
Needle 4 is arranged at the central through hole 21 of valve nozzle 1 central feed injection mouth 11 and first flow butt joint body 2; Push rod 5 is arranged in the second runner butt joint body, 3 cavitys 31, is inverted T shape, and the one of which end is resisted against needle 4 one ends; An other end is embedded at the cavity 311 of the second runner butt joint body, 3 cavitys, 31 bottoms; Spring 6 is sheathed on push rod 5 shafts, and the one of which end is against T type end, and the other end is against cavity 31 bottoms; Cast gate connector 7, one of which side are established a cavity 71, and are sheathed on an end of the second runner butt joint body 3, also are provided with central feeding mouth 72 on it, and are connected with runner 32～34 ports of the second runner butt joint body 3; Ring flange 8 is sheathed on cast gate connector 7; K representes the switching impulse stroke of needle.
Referring to Figure 12 a～Figure 12 d, the present invention also establishes a heater 9, and it comprises, housing 91, and it is made up of interior cover 911, overcoat 912, forms the housing ring wall of band accommodation space; Heater coil 92, cover 911 lateral surfaces in it is set around; Described valve nozzle 1, the second runner butt joint body 3 and cast gate connector 7 lateral surfaces are established lead-in wire groove 14 vertically; The end of valve nozzle 1 nearly central feed injection mouth 11 offers temperature sense hole 13; Temperature sensor temperature-sensing probe 17 is arranged in the described valve nozzle temperature sense hole 13; Its lead-out wire 171 is set around the lead-in wire groove 14 that described valve nozzle 1, the second runner butt joint body 3 and cast gate connector 7 lateral surfaces are established vertically, and this lead-in wire groove 14 twist.
The transition annular groove 15 that is connected with the groove 14 that goes between is established in each junction of described valve nozzle 1, the second runner butt joint body 3 and cast gate connector 7; Referring to Figure 11 a, Figure 11 b; Supply the laying of temperature sensor temperature-sensing probe lead-out wire with this, and adapt to the wiring transition between above-mentioned three parts.
Outwards curl in interior cover 911 two ends of described heater housing 9, cover 911 in overcoat 912 is sheathed on.
Referring to Figure 13 a, Figure 13 b; The second runner butt joint body, 3 corresponding described cast gate connectors 7 of the present invention are concentric with central feeding mouth place 72 and establish annular groove 35 on their contact-making surface; Establish hollow seal circle 16 in the annular groove 35, sealing circle 16 medial surfaces have annulus 161.In the pressure injection process; Fluid in the butt joint passage gets into the interior expansive force of generation in the sealing ring 16 from the annulus of sealing ring; Pressure is high more, and interior expansive force is big more, thereby on the contact-making surface of the second runner butt joint body 3, cast gate connector 7, produces good flat seal effect.
Referring to Figure 14 a, Figure 14 b, the plane that every each section in described three runners 22,23,24 holes is gone up the intersection place of adjacent holes center line becomes coplane or antarafacial with the plane at the central axis place of butt joint body 2.Particularly antarafacial design, it is more smooth and easy that it can make fluid flow in the intersection of runner 22,23,24, is not easy to produce the material phenomenon that stagnates more.
In sum, the passive pin valve of the present invention's design through to needle-valve runner, the isostructural improvement of needle-valve stress surface, is largely increased needle valve structure intensity, can adapt to the injection requirement under the elevated pressures; And improved the reliability that pressure transmits performance and temperature control feedback signal; Simultaneously, simplified the packaging technology of heater housing; The resistance to pressure and the service life of sealing ring have also been improved.If mix heater and temperature sensor then can be used for TOP-TIP.
Claims (7)
1. a passive pin valve is characterized in that, comprise,
Valve nozzle, the one of which end is the cone of band central feed injection mouth, the other end has a cavity body structure;
The first flow butt joint body is installed in the valve nozzle cavity body structure, have on it one with the corresponding central through hole of valve nozzle central feed injection mouth; And this first flow butt joint body also offers at least one runner that intersect with the central through hole mouth and communicate with valve nozzle central feed injection mouth at the through hole side;
The second runner butt joint body, one of which end are resisted against the first flow butt joint body in the described valve nozzle cavity body structure, and are connected with valve nozzle cavity body structure inner thread; The corresponding first flow butt joint body of this second runner butt joint body central through hole is provided with a cavity, and this cavity is also being established a cavity away from the bottom of first flow butt joint body one end; And this second runner butt joint body also offers the runner of at least one corresponding first flow butt joint body runner at the cavity side, and the another port of this runner is positioned at the second runner butt joint body, and another is distolateral;
Needle; Its leading portion and back segment are corresponding respectively to be arranged in the central through hole of valve nozzle central feed injection mouth and first flow butt joint body; Described needle leading portion external diameter is less than back segment; Variation place of size external diameter is arcs of recesses, and variation place of needle size external diameter is positioned at the exit of first flow butt joint body runner near valve nozzle central feed injection mouth one end, or variation place of needle size external diameter is positioned at the intersection of each bar runner of first flow butt joint body near the outlet of valve nozzle central feed injection mouth one end;
Push rod is arranged in the second runner butt joint body cavity, is inverted T shape, and its T type end is resisted against needle one end; The other end is embedded in the cavity of the second runner butt joint body cavity bottom;
Spring is sheathed on the push rod shaft, and the one of which end is against T type end, and the other end is against the cavity bottom of the second runner butt joint body;
The cast gate connector; The one of which side is established a cavity; And be sheathed on the second runner butt joint body away from an end of first flow butt joint body, also be provided with the central feeding mouth on the cast gate connector, and be connected with the runner port of the second runner butt joint body socket cast gate connector, one end;
Ring flange is sheathed on the cast gate connector.
2. passive pin valve as claimed in claim 1 is characterized in that, also establishes a heater, and it comprises,
Housing, it is made up of inside and outside cover, forms the housing ring wall of band accommodation space;
Heater coil, cover lateral surface in it is set around;
Described valve nozzle, the second runner butt joint body and cast gate connector three's lateral surface is established the lead-in wire groove vertically; The end of the nearly central feed injection mouth of valve nozzle offers the temperature sense hole;
Temperature sensor senses probe is arranged in the described valve nozzle temperature sense hole, and its lead-out wire is set around the lead-in wire groove that described valve nozzle, the second runner butt joint body and cast gate connector three's lateral surface is established vertically.
3. passive pin valve as claimed in claim 2 is characterized in that, outwards curls in the interior cover two ends of described heater housing, and overcoat is sheathed on interior cover.
4. passive pin valve as claimed in claim 2 is characterized in that, the lead-in wire groove that described valve nozzle, the second runner butt joint body and cast gate connector three's lateral surface is established vertically twist.
5. like claim 2 or 4 described passive pin valves, it is characterized in that the junction between the described valve nozzle and the second runner butt joint body and the second runner butt joint body and the cast gate connector is established the transition annular groove that is connected with the groove that goes between respectively.
6. like claim 1 or 2 or 3 or 4 described passive pin valves, it is characterized in that the runner of the said first flow butt joint body and the second runner butt joint body respectively is provided with three, be symmetrically distributed along valve nozzle central feed injection mouth circumference respectively.
7. according to claim 1 or claim 2 passive pin valve; It is characterized in that; The corresponding described cast gate connector of the described second runner butt joint body is concentric with central feeding mouth place and establishes annular groove on their contact-making surface, establish the hollow seal circle in the annular groove, and sealing circle medial surface has the annulus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101733828A CN101468511B (en) | 2007-12-27 | 2007-12-27 | Passive pin valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101733828A CN101468511B (en) | 2007-12-27 | 2007-12-27 | Passive pin valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101468511A CN101468511A (en) | 2009-07-01 |
| CN101468511B true CN101468511B (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101733828A Expired - Fee Related CN101468511B (en) | 2007-12-27 | 2007-12-27 | Passive pin valve |
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| CN (1) | CN101468511B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107567377B (en) * | 2015-03-20 | 2019-10-01 | 圣万提注塑工业（苏州）有限公司 | Actuator cools down device and method |
| CN105936108A (en) * | 2016-04-20 | 2016-09-14 | 上海默作精密仪器有限公司 | Passive needle valve for annularly ejecting sprue |
| CN106738666A (en) * | 2016-11-22 | 2017-05-31 | 浙江思纳克热流道科技有限公司 | The needle jet of automatic open close |
| CN107962743A (en) * | 2016-12-19 | 2018-04-27 | 上海默作精密仪器有限公司 | The passive pin valve of runner is equipped with needle |
| CN109454832B (en) * | 2018-11-14 | 2023-09-19 | 杭州余杭振华日化玻璃有限公司 | Hot runner injection mold |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201147979Y (en) * | 2007-12-27 | 2008-11-12 | 高建鸣 | Passive needle valve |
-
2007
- 2007-12-27 CN CN2007101733828A patent/CN101468511B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201147979Y (en) * | 2007-12-27 | 2008-11-12 | 高建鸣 | Passive needle valve |
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| Publication number | Publication date |
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| CN101468511A (en) | 2009-07-01 |
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