CN102166813A - Ultrasonic auxiliary micro injection forming die - Google Patents
Ultrasonic auxiliary micro injection forming die Download PDFInfo
- Publication number
- CN102166813A CN102166813A CN2011100271086A CN201110027108A CN102166813A CN 102166813 A CN102166813 A CN 102166813A CN 2011100271086 A CN2011100271086 A CN 2011100271086A CN 201110027108 A CN201110027108 A CN 201110027108A CN 102166813 A CN102166813 A CN 102166813A
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- CN
- China
- Prior art keywords
- dynamic model
- template
- quiet mould
- die
- moving die
- 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.)
- Granted
Links
- 238000000520 microinjection Methods 0.000 title claims abstract description 14
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 238000000465 moulding Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 abstract description 24
- 230000000704 physical effect Effects 0.000 abstract description 2
- 238000002347 injection Methods 0.000 description 28
- 239000007924 injection Substances 0.000 description 28
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000001746 injection moulding Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007646 directional migration Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009878 intermolecular interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
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- 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
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
- B29C45/5675—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding for making orifices in or through the moulded article
-
- 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
- B29C2045/0094—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor injection moulding of small-sized articles, e.g. microarticles, ultra thin articles
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/008—Using vibrations during moulding
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The present invention discloses an ultrasonic auxiliary micro injection forming die. The die comprises a fixed die and a moving die, wherein the fixed die comprises a fixed die fixed plate, and a fixed die template is connected with the fixed die fixed plate. The moving die comprises a moving die template which is connected with a moving die insert in the middle, a moving die fixed plate is fixedly connected with the moving die template arranged above through a baffle plate. A push plate supporting device is arranged in the middle of the moving die fixed plate, and a support is fixedly arranged between the push plate and the moving die template through a pillar support. A spring is arranged between the push plate and the moving die template, and an energy transducer is connected with an ultrasonic generator. Every set of piezoelectric ceramics is connected, in a manner of being compressed, with the bottom surface of the support through double ended screws, the top end of every double ended screw is in threaded connection with the lower part of a horn, and the top part of every horn is connected with a moving die core. By adopting the device, not only the fluidity and filling performance of polymer melt can be improved, but the physical property of micro injection molded parts can also be enhanced.
Description
Technical field
The present invention relates to the injection mo(u)lding and the micro injection molding processing of polymeric material device, be specifically related to the auxiliary little injection forming mould of polymer ultrasonic.
Background technology
Along with the extensive use of polymeric material in micro-structural is made, the manufacturing technology of polymer micro-structural becomes the key issue in micro polymer Mechatronic Systems (MEMS), micro-system (MST) manufacturing.At present, the micro injection molding technology is considered to carry out the main manufacture method of polymer micro-structural, has that manufacturing process is simple, cost of manufacture is low, be easy to characteristics such as production in enormous quantities.
But, present micro injection molding technology also mostly is the pattern according to the conventional injection molding technology of tradition, to improve the shear stress of polymer melt by parameters such as raising injection speed, mold temperatures, thereby change the mobile performance of polymer melt, reach and improve its purpose the filling capacity of core rod microchannel.Along with polymer MEMS, MST are more and more littler to little feature structural dimension parameter requirement of polymer device, some following problems have appearred in existing micro injection molding technology: (1) because the lack of uniformity and the uncertainty of thermal loss in the injection moulding process, causes the form accuracy of microdevice can't stably reach the requirement of higher level; (2), when producing, the micro-structural injection moulding of carrying out high-aspect-ratio is difficult for being full of mold cavity for the very high polymer of viscosity; (3) micro injection molding is compared with conventional injection moulding, needs higher material melt temperature and mold temperature, and this has brought difficulty just for the design and the manufacturing of micro injection molding system; (4) design of miniature core rod and manufacturing also can't be satisfied the demand of micro-structural production development; (5) for the polymer that is easy to decompose, its processing temperature narrow range, fabrication process condition is difficult to control; (6) high aspect ratio microstructures is fragile, and polymer and micro-mould adhesiveness are bigger, lack effective demoulding means at present.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide that a kind of mold filling is complete, internal stress is less, melt temperature and mold temperature demand than the end, the demoulding easily and can improve the auxiliary little injection forming mould of a kind of ultrasonic wave of polymeric material device strength and optical property.
A kind of ultrasonic wave of the present invention is assisted micro injection molding die, it comprises quiet mould and dynamic model, described quiet mould comprises quiet mould fixed head, be connected with quiet mould template on described quiet mould fixed head, the center fixed of described quiet mould template is connected with its quiet mould that is provided with quiet mould core rod, sprue bush and quiet mould runner and inserts; Described dynamic model comprises its middle dynamic model template that is fixedly connected with moving die insert, dynamic mould fixing plate is fixedly linked by baffle plate and side's disposed thereon dynamic model template, the centre that is arranged on described dynamic mould fixing plate is supported in a push pedal, support is fixedly mounted between push pedal and the dynamic model template by pillar brace, between described push pedal and dynamic model template, be provided with spring, described moving die insert is provided with dynamic model core rod and dynamic model runner, each free one group at least one transducer that has the piezoelectric ceramic piece composition of interstitial hole links to each other with supersonic generator by binding post respectively, double threaded screw from each the group piezoelectric ceramics interstitial hole pass make described each the group piezoelectric ceramic piece be connected on the support bottom surface by double threaded screw is compacted, each double threaded screw top is connected with the lower thread of a luffing bar separately, and the top of each luffing bar links to each other with the dynamic model core rod respectively.
Of the present invention outstanding advantage is:
The present invention is incorporated into ultrasonic wave in the micro injection molding process, guarantee the polymer melt that is transmitted to of ultrasonic wave maximal efficiency in conjunction with the version of support by double threaded screw, utilize the mutual shearing friction that has increased on the ultrasonic vibration microcosmic between the polymer macromolecular chain on the one hand, produce a large amount of burn-offs, while constantly pushes polymer melt and discharges, reduced intermolecular interaction force, then shown as the polymer melt viscosity on the macroscopic view and elasticity reduces, mobile increasing.Make polymeric material also can obtain good mobile performance being lower than under the traditional injection moulding melt temperature situation; Under the effect of ultrasonic vibration, along the direction of vibration, directional migration will take place in the molecule of polymer on the other hand, realizes " flowing " of polymeric material.Not only can be by flowability and the filling performance that improves polymer melt.Thereby improve the injection mo(u)lding quality of polymer micro-structural, and because ultrasonic wave can change the crystalline orientation of crystal before the polymer crystals structure forms, therefore form more unified crystal structure, can improve the physical property (as light transmission etc.) of little moulding.
Description of drawings
Fig. 1 is the auxiliary scheme of installation of little injection forming mould on injection machine of a kind of ultrasonic wave of the present invention;
Fig. 2 is the structural representation of the quiet mould part of the auxiliary little injection forming mould of a kind of ultrasonic wave of the present invention;
Fig. 3 is the dynamic model structural representation of the auxiliary little injection forming mould of a kind of ultrasonic wave of the present invention;
Fig. 4 is the dismantle dynamic model interior details figure of a side shield of the present invention's dynamic model structure shown in Figure 3;
Fig. 5 is the ultrasonic system part schematic diagram of the auxiliary little injection forming mould of a kind of ultrasonic wave of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, and, the technology of the present invention is described further with reference to accompanying drawing:
A kind of as shown in the figure ultrasonic wave is assisted micro injection molding die, it comprises quiet mould 9 and dynamic model 7, described quiet mould 9 comprises quiet mould fixed head 19, on described quiet mould fixed head 19, be connected with quiet mould template 14, the center fixed of described quiet mould template 14 is connected with its quiet mould that is provided with quiet mould core rod 16, sprue bush 10 and quiet mould runner 17 and inserts 18; Described dynamic model 7 comprises its middle dynamic model template 20 that is fixedly connected with moving die insert 21, dynamic mould fixing plate 26 is fixedly linked by the dynamic model template 20 of baffle plate 25 (can be square iron) with side disposed thereon, and baffle plate 25 can adopt bolt to link to each other with dynamic mould fixing plate 26 and dynamic model template 20.The centre that is arranged on described dynamic mould fixing plate is supported in a push pedal 27, support 33 is fixedly mounted between push pedal 27 and the dynamic model template 20 by pillar brace 29, between described push pedal 27 and dynamic model template 20, be provided with spring 28, described moving die insert 21 is provided with dynamic model core rod 22 and dynamic model runner 23, each free one group at least one transducer 32 that has the piezoelectric ceramic piece composition of interstitial hole links to each other with supersonic generator 2 by binding post 30 respectively, double threaded screw 31 from each the group piezoelectric ceramics interstitial hole pass make described each the group piezoelectric ceramic piece be connected on support 33 bottom surfaces by double threaded screw is compacted, each double threaded screw top is connected with the lower thread of a luffing bar 34 separately.The top of each luffing bar 34 links to each other with dynamic model core rod 22 respectively, also can directly make core rod at the luffing boom end.This device is in installing and using process, the movable platen 5 that described dynamic model 7 utilizes pressing plate or standard bolt to connect dynamic mould fixing plate 26 and injection machine 1 is fixed together, the stationary platen 13 that the quiet mould 9 of described injection machine utilizes pressing plate or standard bolt to connect quiet mould fixed head 19 and injection machine 1 links to each other, described sprue bush 10 joins with caster emitting device 12 nozzles, can finish the production process of injection mo(u)lding by the action of injection machine 1.
End owing to transducer 32 in this device is pressed on support 33 bottom surfaces, and described support 33 is fixed in the push pedal 27 by stent strut 29, so the ultrasonic vibration that transducer 32 produces can only pass to luffing bar 34 by double threaded screw 29, thereby can guarantee the ultrasonic vibration that transducer 32 produces is passed to luffing bar 34.Luffing bar 34 and double threaded screw 31 connecting ends process the screw thread that can link with double threaded screw 29.Luffing bar 34 other ends link to each other with core rod 22, the core rod 22 plastic shape of moulding as required directly obtains in luffing bar 34 ends processing, also can make planar end surface or embedded groove, ready made core rod 22 is connect with luffing bar 34 mutually by bonding or embedded mode in luffing bar 34 ends.
When this device uses in reality, specifically carry out according to following steps:
(1) utilize standard bolt or clamp mechanism dynamic model 7, quiet mould 9 to be separately fixed on the movable platen 5 and stationary platen 13 of injection machine; And guarantee dynamic and static mould correct matched moulds and divide mould under the guide effect in lead 8, lead hole 15;
(2) utilize the thick adjustment function of mould of injection machine 1, determine the tram of sound mould matched moulds;
(3) behind dynamic model 7 and quiet mould 9 matched moulds, open supersonic generator 2, drive transducer 32 and produce ultrasonic vibration, and ultrasonic wave is passed to luffing bar 34, by luffing bar 34 ultrasonic vibration is passed to the polymer melt flow stream again by the syndeton of the present invention's design; Ultrasonic frequency vibratory can be by regulating supersonic generator 2, according to the performance requirement of polymeric material, plastic etc. ultrasonic frequency vibratory is set, and can be chosen at usually in the 18-80kHz scope and regulate.
(4) utilize the ejecting device 12 of injection machine 1 that the molten polymer melt is passed through sprue bush 10, runner via quiet mould runner 17 and 23 formation of dynamic model runner, be injected in the die cavity of forming by quiet mould core rod 16 and dynamic model core rod 22 (runner and core rod carry out the structure setting according to instructions for use), and carry out the pressurize of a period of time according to the plastic specific requirement; Dwell time and dwell pressure are set by injection machine 1;
(5) after pressurize finishes, close supersonic generator 2, cool off.The time of cooling is set by injection machine 1 according to plastic performance and polymeric material kind.
(6) cooling finishes the back die sinking, will make plastic by sprue puller 24 and ejecting mechanism 4 and take off, and goods are finished.
Apparatus of the present invention, by ultrasonic wave being directly acted on fluid channel and miniature core rod, overcoming existing can only the dependence merely of conventional micro injection molding method improves mold temperature or injection moulding speed to solve mold filling incomplete, problems such as internal stress is big, demoulding difficulty solve problem and limitation that present high-aspect-ratio micro polymer injection molding technology exists at aspects such as applicability, micro-structural injection moulding quality and efficient.
Claims (1)
1. a ultrasonic wave is assisted micro injection molding die, it comprises quiet mould and dynamic model, it is characterized in that: described quiet mould comprises quiet mould fixed head, be connected with quiet mould template on described quiet mould fixed head, the center fixed of described quiet mould template is connected with its quiet mould that is provided with quiet mould core rod, sprue bush and quiet mould runner and inserts; Described dynamic model comprises its middle dynamic model template that is fixedly connected with moving die insert, dynamic mould fixing plate is fixedly linked by baffle plate and side's disposed thereon dynamic model template, the centre that is arranged on described dynamic mould fixing plate is supported in a push pedal, support is fixedly mounted between push pedal and the dynamic model template by pillar brace, between described push pedal and dynamic model template, be provided with spring, described moving die insert is provided with dynamic model core rod and dynamic model runner, each free one group at least one transducer that has the piezoelectric ceramic piece composition of interstitial hole links to each other with supersonic generator by binding post respectively, double threaded screw from each the group piezoelectric ceramics interstitial hole pass make described each the group piezoelectric ceramic piece be connected on the support bottom surface by double threaded screw is compacted, each double threaded screw top is connected with the lower thread of a luffing bar separately, and the top of each luffing bar links to each other with the dynamic model core rod respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100271086A CN102166813B (en) | 2011-01-25 | 2011-01-25 | Ultrasonic auxiliary micro injection forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100271086A CN102166813B (en) | 2011-01-25 | 2011-01-25 | Ultrasonic auxiliary micro injection forming die |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102166813A true CN102166813A (en) | 2011-08-31 |
| CN102166813B CN102166813B (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100271086A Expired - Fee Related CN102166813B (en) | 2011-01-25 | 2011-01-25 | Ultrasonic auxiliary micro injection forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102166813B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624931A (en) * | 2013-11-01 | 2014-03-12 | 大连理工大学 | Combined-type multidirectional ultrasonic excitation injection molding visualization mould |
| CN103722703A (en) * | 2013-12-31 | 2014-04-16 | 苏州市职业大学 | Plastic microinjection structure additionally with longitudinal-torsional ultrasonic vibration |
| CN106383070A (en) * | 2016-08-23 | 2017-02-08 | 天津大学 | A testing device and a method for polymer rheological properties under ultrasonic vibration |
| CN107839168A (en) * | 2017-10-01 | 2018-03-27 | 深圳市普耐光电科技有限公司 | A kind of mould |
| CN111361084A (en) * | 2020-03-12 | 2020-07-03 | 储晓锋 | High-efficiency injection molding machine with double injection molding openings |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06312439A (en) * | 1993-04-30 | 1994-11-08 | Ryoji Ogawa | Runnerless mold for injection molding |
| KR20090114920A (en) * | 2008-04-30 | 2009-11-04 | (주)태성티아이엠 | Injection molding apparatus and injection products |
| CN101623918A (en) * | 2009-08-04 | 2010-01-13 | 深圳大学 | Ultrasonic auxiliary injection molding die and molding method thereof |
| CN201669854U (en) * | 2010-05-26 | 2010-12-15 | 重庆理工大学 | Melt pulsation auxiliary injection molding device |
-
2011
- 2011-01-25 CN CN2011100271086A patent/CN102166813B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06312439A (en) * | 1993-04-30 | 1994-11-08 | Ryoji Ogawa | Runnerless mold for injection molding |
| KR20090114920A (en) * | 2008-04-30 | 2009-11-04 | (주)태성티아이엠 | Injection molding apparatus and injection products |
| CN101623918A (en) * | 2009-08-04 | 2010-01-13 | 深圳大学 | Ultrasonic auxiliary injection molding die and molding method thereof |
| CN201669854U (en) * | 2010-05-26 | 2010-12-15 | 重庆理工大学 | Melt pulsation auxiliary injection molding device |
Non-Patent Citations (1)
| Title |
|---|
| 王海雄等: "基于超声振动注射的手机导光板注射成型", 《模具工业》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103624931A (en) * | 2013-11-01 | 2014-03-12 | 大连理工大学 | Combined-type multidirectional ultrasonic excitation injection molding visualization mould |
| CN103624931B (en) * | 2013-11-01 | 2016-05-11 | 大连理工大学 | The multidirectional ultrasonic action injection moulding of a kind of combined type visible mold |
| CN103722703A (en) * | 2013-12-31 | 2014-04-16 | 苏州市职业大学 | Plastic microinjection structure additionally with longitudinal-torsional ultrasonic vibration |
| CN103722703B (en) * | 2013-12-31 | 2016-04-20 | 苏州市职业大学 | A kind of Plastic microinjection structure of additional longitrorse ultrasonic vibration |
| CN106383070A (en) * | 2016-08-23 | 2017-02-08 | 天津大学 | A testing device and a method for polymer rheological properties under ultrasonic vibration |
| CN106383070B (en) * | 2016-08-23 | 2018-10-16 | 天津大学 | The test device and method of the lower polymeric rheology performance of ultrasonic activation effect |
| CN107839168A (en) * | 2017-10-01 | 2018-03-27 | 深圳市普耐光电科技有限公司 | A kind of mould |
| CN111361084A (en) * | 2020-03-12 | 2020-07-03 | 储晓锋 | High-efficiency injection molding machine with double injection molding openings |
| CN111361084B (en) * | 2020-03-12 | 2021-04-09 | 浙江博创机械有限公司 | High-efficiency injection molding machine with double injection molding openings |
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| Publication number | Publication date |
|---|---|
| CN102166813B (en) | 2013-03-13 |
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