CN201366770Y - Hot runner nozzle device driven by giant magnetostrictive material - Google Patents
Hot runner nozzle device driven by giant magnetostrictive material Download PDFInfo
- Publication number
- CN201366770Y CN201366770Y CNU2009201068400U CN200920106840U CN201366770Y CN 201366770 Y CN201366770 Y CN 201366770Y CN U2009201068400 U CNU2009201068400 U CN U2009201068400U CN 200920106840 U CN200920106840 U CN 200920106840U CN 201366770 Y CN201366770 Y CN 201366770Y
- Authority
- CN
- China
- Prior art keywords
- nozzle
- runner
- plate
- magnetostrictive
- giant magnetostrictive
- 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
Links
- 239000000463 material Substances 0.000 title claims abstract description 24
- 239000000498 cooling water Substances 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 150000002910 rare earth metals Chemical class 0.000 claims description 5
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 abstract description 9
- 230000004044 response Effects 0.000 abstract description 9
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- AWWAHRLLQMQIOC-UHFFFAOYSA-N [Fe].[Sm] Chemical compound [Fe].[Sm] AWWAHRLLQMQIOC-UHFFFAOYSA-N 0.000 description 1
- MOSURRVHVKOQHA-UHFFFAOYSA-N [Tb].[Dy] Chemical compound [Tb].[Dy] MOSURRVHVKOQHA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- RDTHZIGZLQSTAG-UHFFFAOYSA-N dysprosium iron Chemical compound [Fe].[Dy] RDTHZIGZLQSTAG-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- NOYZXJGXUNSQQU-UHFFFAOYSA-N holmium iron Chemical compound [Fe].[Fe].[Fe].[Fe].[Fe].[Fe].[Fe].[Fe].[Fe].[Ho] NOYZXJGXUNSQQU-UHFFFAOYSA-N 0.000 description 1
- JSUSQWYDLONJAX-UHFFFAOYSA-N iron terbium Chemical compound [Fe].[Tb] JSUSQWYDLONJAX-UHFFFAOYSA-N 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/28—Closure devices therefor
- B29C45/2806—Closure devices therefor consisting of needle valve systems
- B29C45/281—Drive means therefor
Abstract
The utility model relates to a hot runner nozzle device driven by giant magnetostrictive material, belonging to the field of precision injection mold. The hot runner nozzle device mainly comprises a main runner nozzle, a fixed half mounting plate, a runner plate, giant magnetostrictive actuators, a valve stem, a nozzle front plate, a nozzle rear plate, a nozzle insert, a nozzle heater and a nozzle, wherein the main runner nozzle is arranged in the middle of a mold; the lower end of the main runner nozzle is provided with the runner plate; one or a plurality of giant magnetostrictive actuators is/are distributed around the main runner nozzle; the giant magnetostrictive actuator drives the valve stem to move up and down for controlling the opening and closing of the nozzle; and the valve stem is in movable fit with the runner plate, the nozzle insert and a hole in the nozzle heater. The hot runner nozzle device has the advantages that the response frequency of the nozzle can reach up to more than 2,000 Hz, the requirement of ultra-high speed precision injection molding can be met, the giant magnetostrictive actuator provided with a cooling water channel is immune to the interference such as temperature fluctuation, the operation is stable and reliable, and the controlling is convenient.
Description
Technical field
The utility model relates to the hot runner nozzle device that a kind of giant magnetostrictive material drives, and belongs to the precise injection molding mould applications.
Background technology
When magnetizing in the ferromagnet outside magnetic field, its length and volume all change, remove external magnetic field after, it recovers original size again, this phenomenon is called magnetostriction.Magnetostriction materials are functional materials of realizing the two energy of electromagnetic energy-mechanical energy and efficient information conversion, and TbFe
2, SmFe
2, DyFe
2, HoFe
2, TbDyFe
2The saturation magnetostriction coefficient of rare-earth-iron based compound under magnetostatic field such as (terbium iron, samarium iron, dysprosium iron, holmium iron, terbium dysprosium ferrums) reaches 1500 * 10
-6～2000 * 10
-6, be traditional magnetostriction materials such as iron, nickel etc. 10～100 times, this class material is called as rare earth ultra-magnetostriction material.The range of linearity of rare earth ultra-magnetostriction material distortion is big, also reaches 2000 * 10 in the strain of linear zone
-6, this helps the accurate control of magnetostriction amount; The thrust that produces during its strain is very big, produces the thrust of about 2000N during the ultra-magnetic telescopic bar magnetostriction of the about 10mm of diameter, and energy conversion efficiency is up to 70%; Its elastic modelling quantity changes with magnetic field, and is adjustable; Response frequency reaches as high as more than the 2000Hz; Frequency characteristic is good, can be in low frequency (tens to 1000 hertz) work down, and working band is wide, good stability, the reliability height, its magnetostriction performance is time to time change not, does not have fatigue, no overheating failure problem.Since giant magnetostrictive material have big displacement, greatly export stress, high response speed, high reliability, drift value is little, driving voltage is low and advantage such as non-recoil, thereby all have in engineering fields such as accurate fluid control, ultraprecise processing, ultraprecise location, robot, precision valve, micro motor and vibration controls widely and use, but it is also fully developed in precision die hot flow path field.
Needle jet is a vitals in the TOP-TIP, adopt needle jet on goods, can not stay the into vestige of cast gate, can use larger-diameter cast gate, the die cavity filling is accelerated, a phenomenon appears leading in the time of can preventing die sinking, when the injector screw rod retreats, prevent the material back suction, can effectively regulate and control cast gate and seal opportunity.Present needle jet mainly contains spring needle-valve nozzle, hydraulic pressure or air pressure drive-type needle-valve nozzle, its main deficiency is the requirement that response speed can not satisfy precise injection molding, the precise injection molding injection speed reaches 1000mm/s, even 2000mm/s arranged, inject time is extremely short, as the loading time of some 3C shell product needed less than 0.5s even 0.2s, yet the conventional valve cast gate can postpone about 0.3～0.5s when control system is issued orders, and therefore conventional needle jet can't be applied to ultra-speed precise injection moulding.Need add pneumatic and fluid pressure drive device when adopting hydraulic pressure or air pressure drive-type needle-valve nozzle in addition, not only complex structure but also be subjected to die size restriction and influence.
The utility model content
The purpose of this utility model is to provide a kind of injection molding high-speed response hot runner nozzle device of ultra-speed precise that is used for.
The hot runner nozzle device that the utility model giant magnetostrictive material drives, its primary structure comprises: the sprue nozzle, the cover half installing plate, super-magnetostrictive drive, valve rod, the nozzle header board, plate behind the nozzle, nozzle heater, nozzle etc., the sprue nozzle, runner plate, nozzle insert, the nozzle header board all is equipped with attemperating unit, plastic melt is remained under the temperature of requirement, be the influence that prevents that temperature fluctuation from bringing, super-magnetostrictive drive has cooling device, be processed with cooling water channel on the cover half installing plate, make cooling water can pass in and out super-magnetostrictive drive, the sprue nozzle is installed in the middle part of cover half installing plate and runner plate, sprue nozzle lower end cooperates with runner plate, melt is gone into runner plate from the sprue nozzle flow, pass through nozzle insert again, nozzle heater, nozzle enters die cavity, one or more super-magnetostrictive drives distribute around the sprue nozzle, one end of valve rod is positioned at super-magnetostrictive drive, the rareearth super magnetostrictive rod of super-magnetostrictive drive by displacement amplifying mechanism after with the moving up and down of the common actuate valve stem of pre-compressed spring, the other end of valve rod passes runner plate successively, nozzle insert, nozzle heater, and can contact with the conical valve seat in the nozzle, the opening and closing of control nozzle when valve rod moves up and down, the external diameter of valve rod and the hole in the nozzle heater are for movingly, guarantee that valve rod moves freely, and plastic melt can not leak to nozzle insert from nozzle heater.
The primary structure of super-magnetostrictive drive comprises: cylindrical shell, magnet exciting coil, permanent magnet, cooling water channel, rareearth super magnetostrictive rod, adjustment screw, displacement amplifying mechanism and pre-compressed spring.Displacement amplifying mechanism is 3 grades or higher, and every grade of displacement enlarger multiplication factor is 3 times or bigger, and promptly total magnification is not less than 27 times.
The utility model adopts the opening and closing of giant magnetostrictive material actuate valve stem control hot-runner nozzle, its response response frequency reaches as high as more than the 2000Hz, can satisfy the injection molding requirement of ultra-speed precise, the giant magnetostrictive material driver that has cooling water channel is not subjected to the interference of temperature fluctuation etc., stable and reliable operation, control is convenient.
Description of drawings
Fig. 1 is the hot runner nozzle device schematic diagram that the utility model giant magnetostrictive material drives
Among the figure: 1-sprue nozzle, 2-cover half installing plate, 3-super-magnetostrictive drive, 4-cooling water channel, 5-runner plate, 6-valve rod, 7-nozzle insert, plate behind the 8-nozzle, 9-nozzle heater, 10-nozzle, 11-nozzle header board
The specific embodiment
The hot runner nozzle device that the utility model giant magnetostrictive material drives as shown in Figure 1, its primary structure comprises: sprue nozzle 1, cover half installing plate 2, runner plate 5, super-magnetostrictive drive 3, valve rod 6, nozzle header board 11, plate 8 behind the nozzle, nozzle insert 7, nozzle heater 9, nozzle 10 etc., cooling water channel on the super-magnetostrictive drive 3 is communicated with the cooling water channel 4 of cover half installing plate 2, sprue nozzle 1 is in the middle of mould, runner plate 5 is installed in sprue nozzle 1 lower end, one or more super-magnetostrictive drives 3 distribute around sprue nozzle 1, the valve rod 6 that super-magnetostrictive drive 3 drives passes runner plate 5 successively, nozzle insert 7, nozzle heater 9, contact cooperation with the conical surface in the nozzle 10, the opening and closing of control nozzle 10 when valve rod 6 moves up and down, the hole in valve rod 6 and the nozzle heater 9 movingly.
In the ultra-speed precise process of injection molding, during the injection melt, super-magnetostrictive drive 3 is not switched on, and valve rod 6 moves up under the effect of spring, and hot-runner nozzle 10 is in opening; After injection is finished, give the energising of the magnet exciting coil in the ultra-magnetic deformation actuator 3, giant magnetostrictive rod produces microdisplacement, after amplifying, displacement amplifying mechanism can make valve rod 6 quick closedown hot-runner nozzles 10, when next injection cycle begins, valve rod 6 is opened hot-runner nozzle 10 again, so circulation.
Giant magnetostrictive rod in the super-magnetostrictive drive 3 uses material to be the TbDyFe alloy bar, i.e. the magnetostrictive rod of Tb-Dy-Fe alloy bar material making, and its magnetostrictivity is up to 1600 * 10
-6, the response time, displacement accuracy was 10 less than 1ms
-1μ m, the best can reach nanoscale, and its elongation makes valve rod 6 produce the displacement of 1～2mm after 3 grades of displacements are amplified, thereby can control the opening and closing of hot-runner nozzle.Permanent magnet in the super-magnetostrictive drive 3 produces certain bias magnetic field, and giant magnetostrictive rod is worked in the suitable range of linearity.Cooling water channel 4 can make giant magnetostrictive rod work in suitable temperature range, eliminates because the influence to the driver output accuracy that temperature rise brings.Pre-compressed spring is used for magnetostrictive rod is applied a precompression, is beneficial to improve its expansion and contraction and guarantees be not subjected to moment of flexure, and precompression can be regulated by adjustment screw.
The scope of its valve rod 6 displacements of hot runner nozzle device that the utility model giant magnetostrictive material drives is 0～2mm, and displacement accuracy can reach 10
-1μ m, the power output scope is: 0～2500N, response frequency can reach 2200Hz, and the opening and closing time can reach 0.25ms respectively, can satisfy the injection molding requirement of ultra-speed precise.
Claims (3)
1, the hot runner nozzle device that giant magnetostrictive material drives, it is characterized in that: mainly comprise the sprue nozzle, the cover half installing plate, runner plate, super-magnetostrictive drive, valve rod, the nozzle header board, plate behind the nozzle, nozzle insert, nozzle heater, nozzle, the sprue nozzle, runner plate, nozzle insert, the nozzle header board all is equipped with attemperating unit, the cooling water channel of processing on the cooling water channel that super-magnetostrictive drive has and the cover half installing plate is communicated with, the sprue nozzle is installed in the middle part of cover half installing plate and runner plate, sprue nozzle lower end cooperates with runner plate, one or more super-magnetostrictive drives distribute around the sprue nozzle, one end of valve rod is positioned at super-magnetostrictive drive, the other end of valve rod passes runner plate successively, nozzle insert, nozzle heater can contact cooperation with conical valve seat in the nozzle, and the external diameter of valve rod and the hole in the nozzle heater are for movingly.
2, the hot runner nozzle device of giant magnetostrictive material driving according to claim 1, it is characterized in that: super-magnetostrictive drive mainly comprises cylindrical shell, magnet exciting coil, permanent magnet, cooling water channel, rareearth super magnetostrictive rod, adjustment screw, displacement amplifying mechanism and pre-compressed spring.
3, the hot runner nozzle device of giant magnetostrictive material driving according to claim 1, it is characterized in that: giant magnetostrictive material is adopted as the TbDyFe alloy bar, i.e. the magnetostrictive rod of Tb-Dy-Fe alloy bar material making.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201068400U CN201366770Y (en) | 2009-03-26 | 2009-03-26 | Hot runner nozzle device driven by giant magnetostrictive material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201068400U CN201366770Y (en) | 2009-03-26 | 2009-03-26 | Hot runner nozzle device driven by giant magnetostrictive material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201366770Y true CN201366770Y (en) | 2009-12-23 |
Family
ID=41485669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201068400U Expired - Fee Related CN201366770Y (en) | 2009-03-26 | 2009-03-26 | Hot runner nozzle device driven by giant magnetostrictive material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201366770Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3144120A1 (en) * | 2015-09-15 | 2017-03-22 | Yudo (Suzhou) Hot Runner Systems Co., Ltd. | Hot runner system, injection process and color change process thereof |
| CN110843175A (en) * | 2018-08-21 | 2020-02-28 | 丰田自动车株式会社 | Hot runner device |
-
2009
- 2009-03-26 CN CNU2009201068400U patent/CN201366770Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3144120A1 (en) * | 2015-09-15 | 2017-03-22 | Yudo (Suzhou) Hot Runner Systems Co., Ltd. | Hot runner system, injection process and color change process thereof |
| CN110843175A (en) * | 2018-08-21 | 2020-02-28 | 丰田自动车株式会社 | Hot runner device |
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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: 20091223 Termination date: 20120326 |