CN109228195A - A kind of micro-nano device ultrasound plasticizing Coinjection molding apparatus - Google Patents
A kind of micro-nano device ultrasound plasticizing Coinjection molding apparatus Download PDFInfo
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- CN109228195A CN109228195A CN201811124373.4A CN201811124373A CN109228195A CN 109228195 A CN109228195 A CN 109228195A CN 201811124373 A CN201811124373 A CN 201811124373A CN 109228195 A CN109228195 A CN 109228195A
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- upper mold
- ultrasonic transducer
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- 238000000465 moulding Methods 0.000 title claims abstract description 46
- 238000002604 ultrasonography Methods 0.000 title claims abstract description 23
- 238000002347 injection Methods 0.000 claims abstract description 50
- 239000007924 injection Substances 0.000 claims abstract description 50
- 229920000642 polymer Polymers 0.000 claims abstract description 41
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000005264 electron capture Effects 0.000 claims description 24
- 238000006073 displacement reaction Methods 0.000 claims description 18
- 239000000523 sample Substances 0.000 claims description 13
- 239000000919 ceramic Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- 239000008187 granular material Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 2
- 230000026683 transduction Effects 0.000 claims 1
- 238000010361 transduction Methods 0.000 claims 1
- 239000011324 bead Substances 0.000 abstract description 16
- 230000004927 fusion Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000000520 microinjection Methods 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012667 polymer degradation Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
-
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
- B29C45/585—Vibration means for the injection unit or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of micro-nano device ultrasound plasticizing Coinjection molding apparatus, it includes pedestal and the injection structure being arranged on the pedestal and at mode structure, the injection structure includes ultrasonic transducer and the injection driving unit for driving the ultrasonic transducer realization bottom and top feed, the ultrasonic transducer is used at the polymer beads in mode structure described in fusion plastification, and auxiliary molten polymer is injection moulded；Described at mode structure includes die unit and closing unit, and the closing unit is used to carry out die closing, molding and the die sinking of die unit；The die unit includes the upper mold for being built-in with upper core and the lower mold for being built-in with mo(u)ld bottom half core, and the upper core and the mo(u)ld bottom half core cooperatively form into model cavity, molten polymer pressure maintaining formed.
Description
Technical field
The present invention relates to a kind of Coinjection molding apparatus, specifically, relate to a kind of plasticizing of micro-nano device ultrasound and are injected into
Type device.
Background technique
The a large amount of micro-nano devices of the development need of MEMS, this provides wide application demand and market for micro-nano device
Scale.Micro injection molding is one of the major technique of polymer micro-nano device manufacture, since micro-nano device size is smaller, structure is multiple
It is miscellaneous, injection molding channel is small, there are mold filling resistances in injection molding it is big, filling is uneven, waste of material and Forming Quality are poor the problems such as.
If micro injection molding owner changes mold system or designed on the basis of conventional injection molding machine at present, asked there is also following
Topic: (1) micro injection molding machine overall dimensions are larger, mold runner longer dimension, not with formed micro-nano device structure size
Match, polymer material waste is serious, and energy consumption is larger；(2) there are miniflow channel effects, and filling is uneven, micro-nano device Forming Quality
Difference.
In order to solve the problems such as there are miniflow channel effect and poor Forming Qualities in micro-nano device forming process, height can be used
The methods of injection speed, high injection pressure, vacuumize process and change mould temperature, but it is big etc. in the presence of increase molding cycle and die deformation
Problem.
In order to solve the above problems, people are seeking always a kind of ideal technical solution.
Summary of the invention
The purpose of the present invention is in view of the deficiencies of the prior art, it is injected into provide a kind of micro-nano device ultrasound plasticizing
Type device.
To achieve the goals above, the technical scheme adopted by the invention is that: a kind of plasticizing of micro-nano device ultrasound is injected into
Type device comprising pedestal and the injection structure being arranged on the pedestal and at mode structure, the injection structure includes super
Sonic transducer and for driving the ultrasonic transducer to realize that the injection driving unit of bottom and top feed, the ultrasonic transducer are used for
Melt polymerization composition granule and to described at injecting molten polymer in mode structure；Described at mode structure includes die unit and molding
Unit, the closing unit are used to carry out die closing, molding and the die sinking of die unit；The die unit includes being built-in with mo(u)ld top half
The upper mold of core and the lower mold for being built-in with mo(u)ld bottom half core, the upper core and the mo(u)ld bottom half core cooperatively form into model cavity, will
Molten polymer pressure maintaining molding.
Based on above-mentioned, the injection driving unit includes the guide rail being arranged on the pedestal, first ball screw and
One servo motor is arranged with the first track base on the guide rail, injection bracket, the ultrasound is installed on first track base
Energy converter is fixed on the injection bracket；The first sliding block is arranged on first ball screw, first sliding block is affixed
The injection bracket；The first servo motor drives the first ball screw rotation, and first sliding block is with described first
Straight reciprocating motion is done in the rotation of ball-screw, and the injection bracket and the ultrasonic transducer follow the straight of first sliding block
Line, which moves back and forth, realizes bottom and top feed.
Based on above-mentioned, the ultrasonic transducer includes piezoelectric vibrator, amplitude transformer and Ultrasonic probe, the piezoelectric vibrator packet
Back shroud, piezoelectric ceramic piece, front shroud, pretension bolt and spring shim are included, it will by the pretension bolt and the spring shim
The back shroud, the piezoelectric ceramic piece and the front shroud are affixed, and the front shroud is fixed on the injection branch by flange
On frame；One end of the amplitude transformer and the front shroud are integrally formed, and the other end of the amplitude transformer is fixedly connected with described super
Sound tool heads.
Based on above-mentioned, the closing unit includes that moving template, the moving template for driving the moving template to move back and forth drive
Dynamic structure is parallel to quiet template that the moving template is fixed on the pedestal and through setting in the moving template and described
Guide post between quiet template, the moving template driving structure include the second ball-screw and second being arranged on the pedestal
Servo motor is arranged with the second track base on the guide rail, moving template, second ball is installed on second track base
The second sliding block, the affixed moving template of the second sliding block are arranged on screw rod；The upper mold is packed on the moving template,
The lower mold is packed in the quiet template top, locating piece is provided on the upper mold, on the lower mold described in correspondence
Locating piece is provided with location hole, and the guide post, the locating piece and the location hole cooperate jointly realizes molding and die sinking
Guiding.
Based on above-mentioned, the upper mold further includes feed opening and the modeling for being connected to the feed opening and the upper core
Change chamber, the structure of the plasticizing chamber is adapted with the Ultrasonic probe of the ultrasonic transducer.
Based on above-mentioned, the upper core include communicated with the sprue of the plasticizing chamber connection, with the sprue to
A few runner and the cast gate being arranged at the top of the runner；The mo(u)ld bottom half core includes multiple corresponding with the cast gate sets
The micro-cell electron capture detector device type chamber set, the number of the micro-cell electron capture detector device type chamber are identical as the number of the runner.
Based on above-mentioned, each micro-cell electron capture detector type is intracavitary to be provided with jogger hole, is arranged in the guide post below the mo(u)ld bottom half core
There is liftout plate, the liftout plate passes through the affixed moving template of connecting rod, corresponds to the micro-cell electron capture detector device type on the liftout plate
The jogger hole of chamber is provided with multiple mandrils.
Based on above-mentioned, the upper core and the mo(u)ld bottom half in-core are additionally provided with hot flow path.
Based on above-mentioned, the upper core and the upper mold taper fit, the mo(u)ld bottom half core are matched with the lower mold taper
It closes, core side is provided on the upper mold and the lower mold and takes out hole.
It further include controller, temperature and pressure sensor and displacement sensor, the setting of institute's displacement sensors based on above-mentioned
In the displacement sensor mounting hole of the upper mold, for detecting the moving displacement of the upper mold；The temperature and pressure passes
Sensor is mounted in the temperature and pressure mounting hole of the upper mold, for detecting the temperature value and pressure value at mode structure；
The controller control connects the temperature and pressure sensor, institute's displacement sensors, the ultrasonic transducer, described first
Servo motor and second servo motor.
The present invention has substantive distinguishing features outstanding and significant progress compared with the prior art, specifically, present invention benefit
The fusion plastification that polymer beads are realized with ultrasonic transducer high-frequency vibration carries out melt polymerization in combination with the die unit
Injection, the pressure maintaining molding of object；The viscosity that ultrasonic vibration can reduce molten polymer makes it easier to mold filling, reduces fluid channel effect
It answers；It can be realized polymer beads Flashmelt, shorten micro-nano device molding cycle, reduce molten polymer degradation；And ultrasound
Vibrate lower melting of polymer pellets plasticizing more evenly, polymer beads spherulite size is smaller, can be effectively improved micro-nano device molding
Quality；By replacement ultrasonic transducer, adjust supersonic generator frequency or phase, realize different materials micro-nano device at
Type effectively reduces cost；Inserted type core is devised, the quick-replaceable of mold cores, mentions when realizing molding different components
High efficiency；While micro-nano device matches with molding equipment structure size, structure size is smaller, also effectively reduces polymer
Particle it is serious, the advantages that having saved raw material, reduced costs.
Detailed description of the invention
Fig. 1 is schematic perspective view of the invention.
Fig. 2 is schematic view of the front view of the invention.
Fig. 3 is left view structural representation of the invention.
Fig. 4 is right side structural representation of the invention.
Fig. 5 is overlooking structure diagram of the invention.
Fig. 6 is the cross-sectional view in the face A-A in Fig. 5.
Fig. 7 is driving structure schematic diagram of the invention.
Fig. 8 is the structural schematic diagram of injection bracket of the present invention.
Fig. 9 is the structural schematic diagram of ultrasonic transducer of the present invention.
Figure 10 is the schematic cross-sectional view of upper mold of the present invention.
Figure 11 is that upper mold of the present invention looks up schematic perspective view.
Figure 12 is the present invention looks up structural representation of upper core of the present invention.
Figure 13 is the schematic perspective view of lower mold of the present invention.
In figure, 1. pedestals；2. ultrasonic transducer；3. shaft coupling；4. hold-down support；5. guide rail；6. first servo motor；7.
First ball screw；8. the first track base；9. injecting bracket；10. the first sliding block；11. the first L shape steel plate；12. ear tongue；13. pressure
Electric tachometer indicator；131. back shroud；132. piezoelectric ceramic piece；133. front shroud；134. pretension bolt；135. spring shim；14. luffing
Bar；15. flange；16. Ultrasonic probe；17. moving template；18. upper mold；181. feed opening；182. plasticizing chambers；183. mo(u)ld top half
Core；184. sprue；185. runner；186. cast gate；187. temperature and pressure sensor mounting hole；Take out hole in 188. sides；19. quiet
Template；20. lower mold；201. mo(u)ld bottom half cores；202. micro-cell electron capture detector device type chambers；203. jogger hole；204. displacement sensor mounting holes；
205. slag well；21. guide post；22. locating piece；23. liftout plate；24. mandril；25. the second ball-screw；26. the second servo
Motor；27. the second track base；28. the second sliding block；29. hot flow path；30. storage device；31. location hole；32. pilot hole；33.
Temperature and pressure sensor.
Specific embodiment
Below by specific embodiment, technical scheme of the present invention will be described in further detail.
As shown in figs 1 to 6, the present invention provide a kind of micro-nano device ultrasound plasticizing Coinjection molding apparatus, including pedestal 1 with
And the injection structure on the pedestal 1 is set and at mode structure, the injection structure includes ultrasonic transducer 2 and for driving
The ultrasonic transducer 2 realizes the driving unit of bottom and top feed, the ultrasonic transducer 2 for melt polymerization composition granule and to
It is described at injecting molten polymer in mode structure；Described at mode structure includes die unit and closing unit, the closing unit
For carrying out die closing, molding and the die sinking of die unit；The die unit includes 18 He of upper mold for being built-in with upper core 183
It is built-in with the lower mold 20 of mo(u)ld bottom half core 201, the upper core 183 and the mo(u)ld bottom half core 201 cooperatively form into model cavity, will melt
Melt polymer pressure maintaining molding.
In use process, using 220V, the power supply of 50Hz directly provides power supply for supersonic generator, then is sent out by ultrasonic wave
Raw device is powered to the ultrasonic transducer 2；Preferably, supersonic generator is the supersonic generator of Frequency Adjustable, phase modulation；Plasticizing
When forming the micro-nano device of different materials, the polymer beads of unlike material are plasticized when melting required ultrasonic frequency not
Together, ultrasonic transducer is only needed to change, and adjusts the phase and/or frequency of supersonic generator, unlike material can be met
The fusion plastification requirement of polymer beads.
When plasticizing forming, the molding that the closing unit realizes the upper mold 18 and the lower mold 20 is first passed through, so
Polymer beads are sent into afterwards in the plasticizing chamber 182 of the upper mold 18, then by described in injection driving unit control
The realization of ultrasonic transducer 2 is fed down；It is described super when the ultrasonic transducer 2 protrudes into the plasticizing chamber 182 of the upper mold 18
Sonic transducer 2 works under the driving for the driving voltage that the supersonic generator provides, and the high-frequency vibration of generation directly acts on
In polymer beads, melted under interface friction heat, the ultrasonic mechanism collective effect such as viscoelasticity heat and ultrasound cavitation effect
Polymer beads form molten polymer；When polymer beads melt completely, the injection driving unit controls the ultrasound
Energy converter 2 continues to feed down, and molten polymer is injected into the upper core 183 and the mo(u)ld bottom half core 201, and injection is completed
Afterwards, the ultrasonic transducer feed-disabling, holding position is motionless, is implemented as the holding of model cavity internal pressure power, molten polymer is in institute
State that upper core 183 and the mo(u)ld bottom half core 201 formed at being formed in model cavity, form micro-nano device；The injection driving unit
The ultrasonic transducer 2 is driven to move upwards, the closing unit controls the upper mold 18 and the lower mold 20 realization is opened
Mould completes a plasticizing forming.
Specifically, as shown in fig. 7, the injection driving unit includes that the guide rail 5, first being arranged on the pedestal 1 rolls
Ballscrew 7 and first servo motor 6, it is preferred that be provided between the first ball screw 7 and the first servo motor 6
Shaft coupling 3, the first ball screw 7 are fixed on the pedestal 1 by hold-down support 4；First is arranged on the guide rail 5
Track base 8, injection bracket 9 is installed on first track base 8, and the ultrasonic transducer 2 is fixed on the injection bracket 9
On；The first sliding block 10, the affixed injection bracket 9 of the first sliding block 10 are arranged on first ball screw；Described
One servo motor 6 drives the first ball screw 7 to rotate, first sliding block 10 with the first ball screw 7 rotation
Straight reciprocating motion is done, the injection bracket 9 and the ultrasonic transducer 2 follow the straight reciprocating motion of first sliding block 10
Realize bottom and top feed.
Preferably, as shown in figure 8, the injection bracket 9 includes the first L shape steel plate 11, the flange of the ultrasonic transducer 2
15 are bolted on the transverse slat of the first L shape steel plate 11；The riser top of the first L shape steel plate 11 is additionally provided with
Ear tongue 12, first sliding block 10 are fixed on the ear tongue 12 by bolt and nut.
As shown in figure 9, the ultrasonic transducer 2 includes piezoelectric vibrator 13, amplitude transformer 14 and Ultrasonic probe 16, the pressure
Electric tachometer indicator 13 includes sequentially connected back shroud 131, piezoelectric ceramic piece 132, front shroud 133 and is used for the affixed back shroud
131, the pretension bolt 134 and spring shim 135 of the piezoelectric ceramic piece 132 and the front shroud 133, for the ease of the pressure
The fixed installation of electric tachometer indicator 13, integrally formed with flange 15 on the front shroud 133, the front shroud 133 passes through the flange
15 are fixed on the injection bracket 9；One end of the amplitude transformer 14 and the front shroud 133 are integrally formed, and can effectively be kept away
Exempt from energy loss, guarantees that the energy of ultrasonic transducer 2 can be exported efficiently；The other end of the amplitude transformer 14 is fixedly connected
State Ultrasonic probe 16.
When the piezoelectric ceramic piece 132 loads high frequency excitation voltage, high frequency is converted electrical energy under inverse piezoelectric effect
Vibrational energy, the amplification through the amplitude transformer 14 are acted directly on described in form unit by the Ultrasonic probe 16
On polymer beads, fusion plastification and the injection of polymer beads are completed.
The closing unit includes moving template 17, the moving template driving structure for driving the moving template 17 to move back and forth
And it is parallel to the quiet template 19 that the moving template 17 is fixed on the pedestal 1, the moving template 17 and the quiet template 19
On be respectively arranged with pilot hole 32, guide post 21 is by the pilot hole 32 through being arranged in the moving template 17 and the quiet mould
Guide post 21 between plate 19, as shown in fig. 7, the moving template driving structure includes the second rolling being arranged on the pedestal 1
Ballscrew 25 and the second servo motor 26, are arranged with the second track base 27 on the guide rail 5, fixed on second track base 27
There is the moving template 17, the second sliding block 28, the affixed dynamic model of the second sliding block 28 are arranged on second ball screw
Plate 17；The upper mold 18 is packed on the moving template 17, and the lower mold 20 is packed in 19 top of quiet template, described
It is provided with locating piece 22 on upper mold 18, corresponds to the locating piece 22 on the lower mold 20 and is provided with location hole 31, it is described to lead
To column 21, the locating piece 22 and the location hole 31 jointly cooperation realize the upper mold 18 and the lower molding of mold 20 with
The guiding of die sinking.
Preferably, the moving template 17 includes the 2nd L shape steel plate, and the upper mold 18 is bolted on described second
On the transverse slat of L shape steel plate；Open up fluted on the riser of the 2nd L shape steel plate, the transverse slat of the 2nd L shape steel plate passes through institute
Stating groove and being extended has fixation hole, and second sliding block 28 is fixed on the fixation hole by bolt and nut；The quiet mould
Plate 19 and the pedestal 1 are integrally formed.
Specifically, the micro-nano device ultrasound plasticizing Coinjection molding apparatus further includes controller, temperature and pressure sensor 33
And displacement sensor, institute's displacement sensors are arranged in the displacement sensor mounting hole 204 of the upper mold 18, for detecting
The moving displacement of the upper mold 18, the controller respectively with institute displacement sensors, the first servo motor 6 and described
The control connection of second servo motor 26 forms the kinetic control system of the injection bracket 9, the moving template 17；The temperature-
Pressure sensor 33 is mounted in the temperature and pressure sensor mounting hole 187 of the upper mold 18, for detecting the mold list
The temperature value and pressure value of member, the controller control connect the temperature and pressure sensor 33, form the die unit
Temperature control system；The controller also controls the connection ultrasonic transducer 2.
As shown in Figure 10, the upper mold 18 further includes feed opening 181 and for being connected to the feed opening 181 and described
The plasticizing chamber 182 of upper core 183, the structure of the plasticizing chamber 182 and 16 phase of Ultrasonic probe of the ultrasonic transducer 2 are suitable
Match.
When designing the plasticizing chamber 182, need in conjunction with the Ultrasonic probe 16, the quality of micro-nano device, charging system
System and diameter, volume, depth and the wall thickness that the plasticizing chamber 182 is designed with the thermal convection of external environment and heat radiation；Example
Such as, if 16 diameter of Ultrasonic probe of 2 front end of the ultrasonic transducer is 8.8mm, length 51mm can then design the plasticizing
182 diameter of chamber is 9.1mm；If the micro-nano device biggest quality is 1.3g, the depth that the plasticizing chamber 182 is obtained by calculation is
25mm, volume are 1.63 × 103cm3；If 181 diameter of feed opening is 5mm, plasticizing 182 total depth of chamber can be designed and be set as
35mm；Thermal convection and heat radiation are generated to reduce the plasticizing chamber 182 with external environment, designs the wall thickness of the plasticizing chamber 182
For 7.5mm.
As shown in figure 11, the upper core 183 includes the sprue 184 being connected to the plasticizing chamber 182 and the mainstream
At least one runner 185 that road 184 communicates and the cast gate 186 being arranged at the top of the runner 185；Preferably, described
The taper of sprue 184 is 3 °, and the number of the runner 185 is 8, and the section of each of which runner 185 is that U-shaped is cut
Face；The cast gate 186 uses semicircular structure.
As shown in figure 12, the mo(u)ld bottom half core 201 includes multiple micro-cell electron capture detector device type chambers being correspondingly arranged with the cast gate 186
202, the number of the micro-cell electron capture detector device type chamber 202 is identical as the number of the runner 185, the micro-cell electron capture detector type chamber 202
The forming recess is collectively formed with the sprue 184 and the runner 185；Preferably, the micro-cell electron capture detector device type chamber
202 numbers are 8, and the number of teeth of each micro-cell electron capture detector device type chamber 202 is 17, modulus 0.25, reference diameter 4.25mm, tooth
Thickness is 1mm.
In forming process, molten polymer passes through 186 note of the sprue 184, the runner 185 and the cast gate
Enter in the corresponding micro-cell electron capture detector device type chamber 202, and the sprue 184, the runner are made by the injection structure
185 and the micro-cell electron capture detector device type chamber 202 in keep certain pressure, promote molten polymer pressure maintaining form, formed micro-nano device
Part.
Micro-nano device is taken out after for the ease of molding, as shown in figure 13, each micro-cell electron capture detector type is intracavitary to be provided with
Jogger hole 203 is arranged with liftout plate 23 in the guide post 21 of 201 lower section of the mo(u)ld bottom half core, and the liftout plate 23 passes through connecting rod
The affixed moving template 17, correspond on the liftout plate 23 the micro-cell electron capture detector device type chamber 202 jogger hole 203 be provided with it is multiple
Mandril 24, each jogger hole 203 can pass through at least one mandril 24.
After molding, when the closing unit controls the 17 upward die sinking of moving template, the liftout plate 23 is with institute
The movement for stating moving template 17 is moved upwards along the guide post 21, thus drive the mandril 24 by molding micro-nano device from
It is ejected in the micro-cell electron capture detector device type chamber 202.
Preferably, the intracavitary number of jogger hole 203 of each micro-cell electron capture detector type is more, more can be quickly and easily by micro-nano device top
Out.
In order to compensate for loss heat, it is additionally provided with hot flow path 29 in the upper core 183 and the mo(u)ld bottom half core 201, and tie
The temperature control system for closing the temperature and pressure sensor and controller composition controls the temperature at form unit.
One-pass molding periodic process of the invention is as follows:
Matched moulds stage
The controller controls second servo motor 26 and rotates forward, so that second ball-screw 25 is driven to rotate forward,
And then the moving template 17 and the upper mold 18 is driven to move downward, by institute's displacement sensors, the guide post 21 and institute
The Bit andits control and positioning and guiding in the realization motion process of locating piece 22 are stated, upper core 183 and the institute of the upper mold 18 are promoted
The mo(u)ld bottom half core 201 for stating lower mold 20 is closed, and is formed into model cavity.
Charging stage
The storage device 30 according to preset molten polymer plastics capacity by the feed opening 181 of the upper mold 18 to
The plasticizing chamber 182 of the upper mold 18 is precisely sent into polymer beads.
Plastic phase
The controller controls the first servo motor 6 and rotates forward, so that the first ball screw 7 is driven to rotate forward, into
And the injection bracket 9 and the ultrasonic transducer 2 is driven to move downward, promote the ultrasonic work of 2 front end of ultrasonic transducer
The plasticizing chamber 182 for having head 16 and the upper mold 18 is closed；
Then the controller controls the first servo motor 6 and stops operating, and is swashed by control supersonic generator load
Voltage is encouraged to drive the ultrasonic transducer 2 to work, the high-frequency vibration that the Ultrasonic probe 16 generates directly acts on polymerization
Composition granule, fusion plastification is poly- under interface friction heat, the ultrasonic mechanism collective effect such as viscoelasticity heat and ultrasound cavitation effect
Polymer beads form molten polymer.
Injection stage
In melting process, the temperature and pressure sensor acquires temperature and pressure and feedback in the plasticizing chamber 182 in real time
To the controller, whether the controller judge polymer beads according to the data that the temperature and pressure sensor acquires
Through complete fusion plastification；When the controller judges polymer beads complete fusion plastification, first servo is controlled
Motor 6 continues to rotate forward, and to drive the injection bracket 9 and the ultrasonic transducer 2 to continue to move downward with pre-set velocity, will melt
Melt polymer and the sprue 184, the runner 185 and the micro-cell electron capture detector are injected into default injection speed and preset pressure
In the forming recess that type chamber 202 collectively constitutes, the high-frequency vibration of the ultrasonic transducer 2 plays the work of auxiliary injection at this time
With；
Since ultrasonic wave high-frequency vibration acts on molten polymer in injection process, Melt Flow Viscosity and flowing resistance can reduce
Power improves miniflow channel effect, so that molten polymer is in the sprue 184, the runner 185 and the micro-cell electron capture detector device
Type chamber 202 fills uniformly, improves the Forming Quality of micro-nano device；
And ultrasonic wave high-frequency vibration acts on molten polymer, additionally it is possible to reduce forming temperature and dwell pressure, shorten molding
Time reduces the degradation of molten polymer.
Pressure maintaining formative stage
When the temperature and pressure sensor detects that the pressure value in the upper mold 18 reaches dwell pressure, the control
Device control supersonic generator stops powering to the ultrasonic transducer 2, so that the ultrasonic transducer 2 be promoted to stop vibration；
The controller controls the first servo motor 6 and stops rotating forward simultaneously, so that the ultrasonic transducer 2 be promoted to stop transporting downwards
It is dynamic, make to keep certain pressure in the upper mold 18, the runner 185 and the micro-cell electron capture detector type chamber 202, promotes to melt
Polymer pressure maintaining molding, forms micro-nano device；The temperature control system of the temperature and pressure sensor composition passes through the hot flow path 29
Control the cooling procedure of the upper mold 18 and the lower mold 20.
It is opened the pickup stage
When pressure maintaining reaches after a certain period of time, the controller controls the first servo motor 6 and inverts, to drive described first
Ball-screw 7 rotates backward, and then the injection bracket 9 is driven to move upwards；When the injection bracket 9 move upward to it is default
Move up apart from when, the controller controls 26 counter motion of the second servo motor, to drive the moving template 17 upwards
Movement promotes the upper mold 18 and the lower mold 20 to separate, institute's displacement sensors and the cooperation control of the guide post 21
The die sinking process of the moving template 17 and the upper mold 18；
When the moving template 17 and the upper mold 18 move upwards die sinking, the liftout plate 23 follows the fortune of the moving template 17
Dynamic to move upwards along the guide post 21, the mandril 24 ejects micro-nano device from the micro-cell electron capture detector type chamber 202, completes
The molding a cycle of micro-nano device, and prepare next molding cycle.
It is described to use side pumping and mosaic texture at form unit to be conveniently replaceable disassembly, it is conveniently replaceable into model cavity and saving
Die space.Specifically, the upper mold 18 and the lower mold 20 are embedded in the moving template 17 and institute using bolt respectively
It states in quiet template 19；It is provided with core side on the upper mold 18 and the lower mold 20 and takes out hole 188, for convenient for core side
It takes out, the upper core 183 uses taper fit with the upper mold 18, and the mo(u)ld bottom half core 201 is used with the lower mold 20 and bored
Degree cooperation, it is preferred that the taper of the upper core 183 and the upper mold 18 is 5 °, the mo(u)ld bottom half core 201 and the lower mold
20 taper is 5 °, and takes out in hole 188 in the core side and be also screwed into screw.In the micro-nano device of molding different shape and size
When, only hole 188 need to be taken out by the core side replace the upper core 183 and the mo(u)ld bottom half core 201, it is simple and efficient, and
Cost can be saved.
It is for the benefit of vented, the roughness on the joint surface of the upper core 183 and the mo(u)ld bottom half core 201 is higher, and and mandril
Hole 203 also has gap.
The slag well 205 for collecting initial cryogenic melt is additionally provided in the mo(u)ld bottom half core 201, a molding cycle is complete
Cheng Hou, low-temperature melt are recycled by the slag well 205.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, it should be understood by those ordinary skilled in the art that: still
It can modify to a specific embodiment of the invention or some technical features can be equivalently replaced；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (10)
1. a kind of micro-nano device ultrasound is plasticized Coinjection molding apparatus, it is characterised in that: including pedestal and be arranged in the pedestal
On injection structure and at mode structure, the injection structure includes ultrasonic transducer and for driving the ultrasonic transducer to realize
The injection driving unit of bottom and top feed, the ultrasonic transducer is for melt polymerization composition granule and to described at injecting in mode structure
Molten polymer；Described at mode structure includes die unit and closing unit, and the closing unit is for carrying out die unit
Die closing, molding and die sinking；The die unit includes the upper mold for being built-in with upper core and the lower mold for being built-in with mo(u)ld bottom half core, institute
It states upper core and the mo(u)ld bottom half core cooperatively forms into model cavity, molten polymer pressure maintaining is formed.
2. micro-nano device ultrasound according to claim 1 is plasticized Coinjection molding apparatus, it is characterised in that: the injection driving
Unit includes the guide rail being arranged on the pedestal, first ball screw and first servo motor, and is arranged on the guide rail
One track base is installed with injection bracket on first track base, and the ultrasonic transducer is fixed on the injection bracket；Institute
It states and is arranged with the first sliding block on the first ball screw, the affixed injection bracket of the first sliding block；The first servo motor
The first ball screw is driven to rotate, first sliding block does straight reciprocating motion with the rotation of the first ball screw,
The injection bracket and the ultrasonic transducer follow the straight reciprocating motion of first sliding block to realize bottom and top feed.
3. micro-nano device ultrasound according to claim 2 is plasticized Coinjection molding apparatus, it is characterised in that: the ultrasonic transduction
Device includes piezoelectric vibrator, amplitude transformer and Ultrasonic probe, and the piezoelectric vibrator includes back shroud, piezoelectric ceramic piece, front shroud, pre-
Tight bolt and spring washer piece, by the pretension bolt and the spring shim by the back shroud, the piezoelectric ceramic piece and institute
It is affixed to state front shroud, the front shroud is fixed on the injection bracket by integrally formed flange；The one of the amplitude transformer
End is integrally formed with the front shroud, and the other end of the amplitude transformer is fixedly connected with the Ultrasonic probe.
4. micro-nano device ultrasound according to claim 2 is plasticized Coinjection molding apparatus, it is characterised in that: the closing unit
Including moving template, the moving template driving structure for driving the moving template to move back and forth, it is parallel to the moving template and is fixed on
Quiet template on the pedestal and through the guide post being arranged between the moving template and the quiet template, the moving template
Driving structure includes the second ball-screw and the second servo motor being arranged on the pedestal, is arranged with second on the guide rail
Track base is installed with moving template on second track base, is arranged with the second sliding block on second ball screw, and described second
The affixed moving template of sliding block；The upper mold is packed on the moving template, and the lower mold is packed in the quiet template
Portion is provided with locating piece on the upper mold, the locating piece is corresponded on the lower mold and is provided with location hole, the guiding
Column, the locating piece and the location hole cooperate the guiding for realizing molding with die sinking jointly.
5. micro-nano device ultrasound according to claim 4 is plasticized Coinjection molding apparatus, it is characterised in that: the upper mold is also
The structure of plasticizing chamber including feed opening and for being connected to the feed opening and the upper core, the plasticizing chamber surpasses with described
The Ultrasonic probe of sonic transducer is adapted.
6. micro-nano device ultrasound according to claim 5 is plasticized Coinjection molding apparatus, it is characterised in that: the upper core packet
It includes with the sprue of the plasticizing chamber connection, at least one runner communicated with the sprue and setting in the shunting
Cast gate at the top of road；The mo(u)ld bottom half core includes multiple micro-cell electron capture detector device type chambers being correspondingly arranged with the cast gate, the micro-cell electron capture detector
The number of device type chamber is identical as the number of the runner.
7. micro-nano device ultrasound according to claim 6 is plasticized Coinjection molding apparatus, it is characterised in that: each micro-cell electron capture detector device
Part type is intracavitary to be provided with jogger hole, liftout plate is arranged in the guide post below the mo(u)ld bottom half core, the liftout plate passes through connection
The affixed moving template of bar, the jogger hole that the micro-cell electron capture detector device type chamber is corresponded on the liftout plate are provided with multiple mandrils.
8. micro-nano device ultrasound according to claim 1-7 is plasticized Coinjection molding apparatus, it is characterised in that: described
Upper core and the mo(u)ld bottom half in-core are additionally provided with hot flow path.
9. micro-nano device ultrasound according to claim 1-7 is plasticized Coinjection molding apparatus, it is characterised in that: described
Upper core and the upper mold taper fit, the mo(u)ld bottom half core and the lower mold taper fit, the upper mold and it is described under
It is provided with core side on mold and takes out hole.
10. micro-nano device ultrasound according to claim 6 is plasticized Coinjection molding apparatus, it is characterised in that: further include control
The displacement sensor installation of the upper mold is arranged in device, temperature and pressure sensor and displacement sensor, institute's displacement sensors
In hole, for detecting the moving displacement of the upper mold；The temperature and pressure sensor is mounted on the temperature-of the upper mold
In pressure mounting hole, for detecting the temperature value and pressure value at mode structure；The controller control connects the temperature-
Pressure sensor, institute's displacement sensors, the ultrasonic transducer, the first servo motor and second servo motor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124373.4A CN109228195A (en) | 2018-09-26 | 2018-09-26 | A kind of micro-nano device ultrasound plasticizing Coinjection molding apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811124373.4A CN109228195A (en) | 2018-09-26 | 2018-09-26 | A kind of micro-nano device ultrasound plasticizing Coinjection molding apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113677456A (en) * | 2019-02-20 | 2021-11-19 | 芝浦机械株式会社 | Die casting machine, die casting machine with die, control device for die casting machine, and die casting method |
| CN114434739A (en) * | 2022-01-27 | 2022-05-06 | 中南大学 | Micro-injection compression molding device and method based on ultrasonic plasticization |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213257A (en) * | 2013-04-09 | 2013-07-24 | 中南大学 | Screw-free ultrasonic microinjection molding device for molten and plasticized polymer and molding method |
| CN208896428U (en) * | 2018-09-26 | 2019-05-24 | 郑州大学 | A kind of micro-nano device ultrasound plasticizing Coinjection molding apparatus |
-
2018
- 2018-09-26 CN CN201811124373.4A patent/CN109228195A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213257A (en) * | 2013-04-09 | 2013-07-24 | 中南大学 | Screw-free ultrasonic microinjection molding device for molten and plasticized polymer and molding method |
| CN208896428U (en) * | 2018-09-26 | 2019-05-24 | 郑州大学 | A kind of micro-nano device ultrasound plasticizing Coinjection molding apparatus |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113677456A (en) * | 2019-02-20 | 2021-11-19 | 芝浦机械株式会社 | Die casting machine, die casting machine with die, control device for die casting machine, and die casting method |
| CN113677456B (en) * | 2019-02-20 | 2024-04-09 | 芝浦机械株式会社 | Die casting machine, die casting machine with die, control device for die casting machine, and die casting method |
| CN114434739A (en) * | 2022-01-27 | 2022-05-06 | 中南大学 | Micro-injection compression molding device and method based on ultrasonic plasticization |
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