CN102717496B - Miniature precision injection machine - Google Patents
Miniature precision injection machine Download PDFInfo
- Publication number
- CN102717496B CN102717496B CN201110360618.5A CN201110360618A CN102717496B CN 102717496 B CN102717496 B CN 102717496B CN 201110360618 A CN201110360618 A CN 201110360618A CN 102717496 B CN102717496 B CN 102717496B
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- Prior art keywords
- rubber
- stirring
- injection
- hole
- molding machine
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Links
- 238000002347 injection Methods 0.000 title claims abstract description 56
- 239000007924 injection Substances 0.000 title claims abstract description 56
- 238000003756 stirring Methods 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 239000003292 glue Substances 0.000 claims description 40
- 239000004033 plastic Substances 0.000 claims description 35
- 229920003023 plastic Polymers 0.000 claims description 35
- 238000001746 injection moulding Methods 0.000 claims description 27
- 125000003003 spiro group Chemical group 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000008018 melting Effects 0.000 abstract description 15
- 238000002844 melting Methods 0.000 abstract description 15
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010008 shearing Methods 0.000 abstract 5
- 238000003723 Smelting Methods 0.000 abstract 1
- 230000004308 accommodation Effects 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a miniature precision injection machine. The miniature precision injection machine comprises a mold opening/closing mechanism, a melting rubber-injection mechanism and a frame. A stirring and shearing screw of the melting rubber-injection mechanism is arranged in a heating component. The stirring and shearing screw and an inner wall of the heating component form a rubber-smelting chamber. A hole with an open end is arranged in the center of the stirring and shearing screw. An injection rod extends into the hole from the open end so that an accommodation chamber is formed. The other end of the stirring and shearing screw is provided with a rubber-feeding hole. A rubber-discharge hole is arranged at a stirring and shearing screw part located at a rubber-feeding hole side far away from the open end. The rubber-feeding hole and the rubber-discharge hole rotatingly cooperate with a one-way valve core arranged at a heating component end close to the mold opening/closing mechanism so that alternative working of the rubber-feeding hole and the rubber-discharge hole is realized. The miniature precision injection machine has the advantages that the whole machine body is short; a floor space is small; a structure is compact; maintenance is easy; automatic rubber-feeding and discharge are realized; the motions of all parts can be controlled fully automatically and accurately by PLC; and an injection rod having a large ratio of the length to the cross section diameter is adopted so that the adopted injection rod has a longer stroke and the precision of an injection amount can be improved to 0.01mg.
Description
Technical field
The present invention relates to one and comprise clasp mould mechanism, molten gum-filling mechanism and frame, described clasp mould mechanism and molten gum-filling mechanism are arranged on micro precise injection molding machine in frame.
Background technology
Traditional injection machine, generally comprise clasp mould mechanism, injection moulding of melt mechanism and frame, clasp mould mechanism and injection moulding of melt mechanism in-line are arranged in frame, described injection moulding of melt mechanism all comprises the rubber melting cylinder of a strip, as the energy-saving structure for melt adhesive drum of the disclosed a kind of injection machine of Chinese patent literature CN201272008, this rubber melting cylinder comprises the screw rod of melten gel system, rubber melting cylinder and injection assembly, multiple heating circles of arranging on rubber melting cylinder, rubber melting cylinder is carried out to heat stepwise, therefore, the injection moulding of melt mechanism of this injection machine is generally all longer, make the entire length of whole injection machine also very long, floor space is larger, the in the situation that of present an inch of land is an inch of gold, take larger area, certainly will to increase user's land used cost, thereby improve the manufacturing cost of final products.
In order to address the above problem, someone has proposed the melten gel part of injection moulding of melt mechanism and injection portion to be divided into two independently parts, can shorten the length of injection moulding of melt mechanism thereby be arranged above and below, the all-electric double-screw injection molding machine of one as disclosed in Chinese patent literature CN201720992U, it is divided into two parts by glue melting device and glue injecting device exactly, and by glue melting device and the upper and lower parallel arrangement of glue injecting device, its glue melting device is positioned on glue injecting device, the plastic cement being melted from glue melting device flows in glue injecting device through ball valve, then, by injection plunger injection.This structure, can shorten the length of injection moulding of melt mechanism widely, reduces the floor space of injection machine,, this by the structure of glue melting device and the upper and lower parallel arrangement of glue injecting device, yet there is complex structure, space hold is large, and after entering glue at every turn and completing, before injecting glue, need to close ball valve, in case in the time of injecting glue because pressure is excessive, and make the glue having melted return to again glue melting device, this operation very precisely or careful, is closed a little in advance or is postponed and close the quality that all can affect product.Tool is local to be said, and close and use into glue quantity not sufficient in pass in advance, causes the product can not be by complete forming; Postponement is closed, and can cause the glue having melted to return to glue melting device, then returns out from charging aperture, and accidentally, this high temperature feed liquid of returning out can be scalded people.
Summary of the invention
The present invention seeks to overcome above-mentioned defect, a kind of length that can not only shorten injection machine be provided, and its take up room less, the micro precise injection molding machine that structure is compacter.
Another object of the present invention is can realize automatic preparation to close glue-feeder, ensures that thermosol can not turn back to melten gel part, can overcome high temperature feed liquid and scald people's hidden danger.
Technical scheme of the present invention is: design a kind of micro precise injection molding machine, comprise clasp mould mechanism, molten gum-filling mechanism and frame, described clasp mould mechanism and molten gum-filling mechanism are arranged in frame, described molten gum-filling mechanism comprises feed hopper, heating element heater, stir and shear screw, spiro driving device, injection rod, injection rod drive unit and nonreturn valve core, within described stirring and shear screw are located at described heating element heater, and form melten gel chamber with the inwall of described heating element heater, described feed hopper is located on heating element heater, and communicate with described melten gel chamber, be provided with the hole of an end opening in described stirring and shear screw central authorities, described injection rod extend in described hole and forms chamber volume from described opening, the other end at stirring and shear screw is provided with glue feeding opening, on the stirring of the side away from opening of glue feeding opening and shear screw, be provided with plastic hole, described glue feeding opening, plastic hole and movable cooperation of nonreturn valve core of one end of close clasp mould mechanism that is arranged on heating element heater, form glue feeding opening and plastic hole and select a job.
As improvement of the present invention, described nonreturn valve core comprises seal section, plastic emitting section and injection section from the inside to surface successively, injection hole is located in injection section, and communicate with the content of plastic emitting section, the interior empty internal diameter of described seal section is less than the interior empty internal diameter of plastic emitting section, and equates with the external diameter of the termination of described stirring and shear screw.
As improvement of the present invention, the and then seal section of described nonreturn valve core is also provided with empty avoiding section, and described empty avoiding section is central for outer end equals termination external diameter, and the inner is greater than the bellmouth of termination external diameter.
As improvement of the present invention, described spiro driving device comprises the first servomotor, and described the first servomotor is by stirring described in gear set drive and shear screw rotation.
As improvement of the present invention, described injection rod drive unit comprises the second servomotor, and described the second servomotor drives the first ball-screw rotation by the first synchronous belt and the first synchronizing wheel, thereby drives injection rod advance or retreat.
As improvement of the present invention, described clasp mould mechanism comprises the 3rd servomotor, and described the 3rd servomotor drives folding mould portable plate by the second synchronous belt, the second synchronizing wheel and the second ball-screw, moves with respect to front mould fixed head.
As improvement of the present invention; described folding mould portable plate and/or front mould fixed head are provided with fast mounting die mechanism; described fast mounting die mechanism comprises front card and back card/back board; described front card and back card/back board are separated by a distance by the connecting plate formation slot that is connected as a single entity, and on described connecting plate, are provided with screw rod.
As improvement of the present invention, around described frame, be provided with cabinet.
As improvement of the present invention, described glue feeding opening is a circle loose structure.
As improvement of the present invention, described plastic hole is a circle loose structure.
The present invention, due to structure after having adopted twin-screw again, not only make traditional rubber melting cylinder shorten nearly 40% length, and this structure is for the upper and lower parallel arrangement of twin-screw, and its structure is compacter, easily maintenance; Adopt unique nonreturn valve core design, in the situation that not increasing any additional mechanism, can realize and automatically enter glue and plastic emitting; All driving mechanism adopts servomotor control, can realize the full-automatic action of precisely controlling various piece with PLC, especially injection rod adopts the larger injection rod in length and cross section, make the stroke of injection rod longer, there is the long period to control injection volume, injection volume precision can be brought up to 0.01mg.Can be widely used in the injection moulding of the small parts used to medical industry, IT industry.
Brief description of the drawings
Fig. 1 is the perspective view of an embodiment of the present invention.
Fig. 2 is that Fig. 1 adds the perspective view after upper case.
Fig. 3 is the perspective view of the molten gum-filling mechanism in Fig. 1.
Fig. 4 is the perspective view of the core component of molten gum-filling mechanism in Fig. 3.
Fig. 5 is stirring in Fig. 4 and the perspective view of shear screw, the first ball-screw and injection rod.
Fig. 6 is the schematic diagram of a kind of state of cross-section structure of stirring in Fig. 4 and shear screw and nonreturn valve core.
Fig. 7 is the schematic diagram of the another kind of state of cross-section structure of stirring in Fig. 4 and shear screw and nonreturn valve core.
Fig. 8 is the planar structure schematic diagram of unit spool in Fig. 6.
Fig. 9 is the perspective view of the fast mounting die mechanism in Fig. 1.
Detailed description of the invention
Refer to Fig. 1 to Fig. 9, what Fig. 1 to Fig. 9 disclosed is a kind of micro precise injection molding machine, comprise clasp mould mechanism 1, molten gum-filling mechanism 2 and frame 3, described clasp mould mechanism 1 and molten gum-filling mechanism 2 are arranged in frame 3, described molten gum-filling mechanism 2 comprises feed hopper 21, heating element heater 22, stir and shear screw 23, spiro driving device 24, injection rod 25, injection rod drive unit 26 and nonreturn valve core 27, within described stirring and shear screw 23 are located at described heating element heater 22, and form melten gel chamber with the inwall of described heating element heater 22, described heating element heater 22 is located on seat board 221, described feed hopper 21 is located on heating element heater 22 by seat board 221, and communicate with described melten gel chamber, be provided with the hole of an end opening in described stirring and shear screw 23 central authorities, described injection rod 25 extend into and in described hole, forms chamber volume 233 from described opening, the other end at stirring and shear screw 23 is provided with glue feeding opening 231, on the stirring of the side away from opening of glue feeding opening 231 and shear screw 23, be provided with plastic hole 232, described glue feeding opening 231, plastic hole 232 and movable cooperation of nonreturn valve core 27 of one end of close clasp mould mechanism 1 that is arranged on heating element heater 22, form glue feeding opening 231 and plastic hole 232 and select a job, a side at the close injection rod drive unit 26 of described seat board 221 is provided with back-moving spring 222, during for melten gel, glue feeding opening 231 is sealed, obviously, described back-moving spring 222 also can be designed to not withstand on the structure on heating element heater 22 by seat board 221, can be designed to described back-moving spring 222 immediate roofs on heating element heater 22.
In the present invention, described spiro driving device 24 comprises the first servomotor 241, and described the first servomotor 241 drives described stirring and shear screw 23 to rotate by gear train 242.Described injection rod drive unit 26 comprises the second servomotor 261, described the second servomotor 261 drives by the first synchronous belt 262 and the first synchronizing wheel 263 sleeve rotating being arranged in ball-screw female seat 265, thereby allows the first ball-screw 264 drive injection rod 25 advance or retreat.Described clasp mould mechanism 1 comprises the 3rd servomotor 11, and described the 3rd servomotor 11 drives folding mould portable plate 15 by the second synchronous belt 12, the second synchronizing wheel 13 and the second ball-screw 14, moves with respect to front mould fixed head 16 along support 18.Be provided with fast mounting die mechanism 17 at described folding mould portable plate 15 and/or front mould fixed head 16, described fast mounting die mechanism 17 comprises front card 171 and back card/back board 172, described front card 171 and back card/back board 172 are separated by a distance to be connected as a single entity and to be formed slot 173 by connecting plate 174, on described connecting plate 174, be provided with screw rod 175, when use, front card 171 is inserted in the corresponding slot of die, back card/back board 172 inserts in the corresponding slot of folding mould portable plate 15 or front mould fixed head 16, tie down screw 175 just can be fixed on die on folding mould portable plate 15 or front mould fixed head 16, this mode can be installed die from the side, facilitate many (see figure 9)s than the die of installing from front in the past.Around described frame 3, be provided with cabinet 31.
Refer to Fig. 6 to Fig. 8, described nonreturn valve core 27 comprises seal section 271, plastic emitting section 272 and injection section 273 from the inside to surface successively, injection hole 274 is located in injection section 273, and communicate with the content of plastic emitting section 272, the interior empty internal diameter of described seal section 271 is less than the interior empty internal diameter of plastic emitting section 272, and equates with the external diameter of the termination 234 of described stirring and shear screw 23; And then the seal section 271 of described nonreturn valve core 27 is also provided with empty avoiding section 275, and described empty avoiding section 275 is central for outer end equals termination 234 external diameters, and the inner is greater than the bellmouth 276 of termination 234 external diameters.At melten gel with to the 233 encapsulating stages of chamber volume, as shown in Figure 6, the indoor plastic cement amount being melted of melten gel reach a certain amount of after, because the plastic cement stirring and shear screw 23 is ceaselessly melted these promotes to nonreturn valve core 27 1 sides, nonreturn valve core 27 is produced to thrust, because nonreturn valve core 27 is to withstand on the sprue bushing of mould, inactive, at this moment, under the effect of the reaction force of above-mentioned thrust, draw back (if while having seat board 221 together with heating element heater 22 and stirring and shear screw 23 with the supporting spacing ring 28 of nonreturn valve core 27, seat board 221 also retreats with heading), when backway exceedes preset distance, glue feeding opening 231 spills in seal section 271, among empty avoiding section 275, certainly, do not have empty avoiding section 275 to be fine yet, only need glue feeding opening 231 to spill in seal section 271 passable, (the removable preset distance of the nonreturn valve core 27 in the present embodiment is designed to 2mm, by spacing with the supporting spacing ring 28 of nonreturn valve core 27), and the sealing of sealed section 271 of plastic hole 232, at this moment, the plastic cement that is melted and shears can be the multiple glue feeding openings 231 of a circle from glue feeding opening 231(the present embodiment) poured in chamber volume 233, the liquid plastic cement entering can promote injection rod 25 gradually backward, (set in advance this distance by PLC until reach preset distance, see Fig. 6), at this moment, stop melten gel, stirring and shear screw 23 stop operating, above-mentioned thrust is kept to zero, under the effect of back-moving spring 222, spacing ring 28 resets forward together with heating element heater 22 and stirring and shear screw 23, the plastic hole of nonreturn valve core 27 232 is spilt in plastic emitting section 272, glue feeding opening 231 seals for sealed section 271, under the promotion of injection rod 25, the plastics glue being melted is the multiple plastic holes 232 of circle from the 232(the present embodiment of plastic hole) flow out, injection hole 274 and sprue bushing through plastic emitting section 272 flow in die, until complete injection moulding, after injection moulding completes, then start melten gel infusion cycles for the second time.
The present invention is the control system that core core forms by PLC, controls each step action of the present invention comprehensively, and when heating-up temperature, injection stroke and injection, and with die sinking time of clasp mould mechanism.In PLC, prestore the program of the injection moulding to different plastic raw materials, after start, only need be according to different plastics, selected corresponding injection moulding program, the present invention can inject qualified product completely automatically.
Claims (10)
1. a micro precise injection molding machine, comprise clasp mould mechanism (1), molten gum-filling mechanism (2) and frame (3), described clasp mould mechanism (1) and molten gum-filling mechanism (2) are arranged in frame (3), described molten gum-filling mechanism (2) comprises feed hopper (21), heating element heater (22), stir and shear screw (23), spiro driving device (24), injection rod (25), injection rod drive unit (26) and nonreturn valve core (27), it is characterized in that, within described stirring and shear screw (23) are located at described heating element heater (22), and form melten gel chamber with the inwall of described heating element heater (22), described feed hopper (21) is located on heating element heater (22), and communicate with described melten gel chamber, be provided with the hole of an end opening in described stirring and shear screw (23) central authorities, described injection rod (25) extend into and in described hole, forms chamber volume (233) from described opening, the other end at stirring and shear screw (23) is provided with glue feeding opening (231), on the stirring of the side away from opening of glue feeding opening (231) and shear screw (23), be provided with plastic hole (232), described glue feeding opening (231), plastic hole (232) and movable cooperation of nonreturn valve core (27) of one end of close clasp mould mechanism (1) that is arranged on heating element heater (22), form glue feeding opening (231) and plastic hole (232) and select a job.
2. micro precise injection molding machine according to claim 1, it is characterized in that, described nonreturn valve core (27) comprises seal section (271), plastic emitting section (272) and injection section (273) from the inside to surface successively, injection hole (274) is located in injection section (273), and logical with the interior Kongxiang of plastic emitting section (272), the interior empty internal diameter of described seal section (271) is less than the interior empty internal diameter of plastic emitting section (272), and equates with the external diameter of the termination (234) of described stirring and shear screw (23).
3. micro precise injection molding machine according to claim 1 and 2, it is characterized in that, and then the seal section (271) of described nonreturn valve core (27) is also provided with empty avoiding section (275), described empty avoiding section (275) is central for outer end equals termination (234) external diameter, and the inner is greater than the bellmouth (276) of termination (234) external diameter.
4. micro precise injection molding machine according to claim 3, it is characterized in that, described spiro driving device (24) comprises the first servomotor (241), and described the first servomotor (241) drives described stirring and shear screw (23) rotation by gear train (242).
5. micro precise injection molding machine according to claim 4, it is characterized in that, described injection rod drive unit (26) comprises the second servomotor (261), described the second servomotor (261) drives the first ball-screw (264) rotation by the first synchronous belt (262) and the first synchronizing wheel (263), thereby drives injection rod (25) advance or retreat.
6. micro precise injection molding machine according to claim 5; it is characterized in that; described clasp mould mechanism (1) comprises the 3rd servomotor (11); described the 3rd servomotor (11) drives folding mould portable plate (15) by the second synchronous belt (12), the second synchronizing wheel (13) and the second ball-screw (14), mobile with respect to front mould fixed head (16).
7. micro precise injection molding machine according to claim 6; it is characterized in that; described folding mould portable plate (15) and/or front mould fixed head (16) are provided with fast mounting die mechanism (17); described fast mounting die mechanism (17) comprises front card (171) and back card/back board (172); described front card (171) and back card/back board (172) are separated by a distance to be connected as a single entity and to be formed slot (173) by connecting plate (174), is provided with screw rod (175) on described connecting plate (174).
8. micro precise injection molding machine according to claim 7, is characterized in that, is provided with cabinet (31) around described frame (3).
9. micro precise injection molding machine according to claim 8, is characterized in that, described glue feeding opening (231) is a circle loose structure.
10. micro precise injection molding machine according to claim 9, is characterized in that, described plastic hole (232) are a circle loose structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110360618.5A CN102717496B (en) | 2011-11-15 | 2011-11-15 | Miniature precision injection machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110360618.5A CN102717496B (en) | 2011-11-15 | 2011-11-15 | Miniature precision injection machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102717496A CN102717496A (en) | 2012-10-10 |
| CN102717496B true CN102717496B (en) | 2014-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110360618.5A Expired - Fee Related CN102717496B (en) | 2011-11-15 | 2011-11-15 | Miniature precision injection machine |
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| Country | Link |
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| CN (1) | CN102717496B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692624B (en) * | 2013-12-30 | 2016-05-18 | 广东联塑机器制造有限公司 | A kind of injection machine |
| CN103862643A (en) * | 2014-03-18 | 2014-06-18 | 深圳市铠钜电子科技有限公司 | Micro injection molding machine |
| CN104552834B (en) * | 2015-01-16 | 2017-05-17 | 苏州宝氏自动化科技有限公司 | Screw type low pressure injection molding machine and injection molding method thereof |
| CN105459323A (en) * | 2015-12-08 | 2016-04-06 | 苏州源硕精密模具有限公司 | Injection molding machine |
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|---|---|---|---|---|
| CN201092107Y (en) * | 2007-08-06 | 2008-07-30 | 谢远鹏 | Minitype experiment injection molding machine |
| CN201268082Y (en) * | 2008-09-27 | 2009-07-08 | 宋择民 | Efficient plastic injection moulding machine |
| CN201272008Y (en) * | 2008-09-27 | 2009-07-15 | 广东伊之密精密机械有限公司 | Energy-saving structure for melt adhesive drum of injection moulding machine |
| CN201720992U (en) * | 2010-07-13 | 2011-01-26 | 深圳市成中胜贸易有限公司 | Fully electrical double-screw injection molding machine |
| CN201989283U (en) * | 2010-12-24 | 2011-09-28 | 合肥普特化轻材料有限公司 | Power device of injection molding machine |
| CN202318827U (en) * | 2011-11-15 | 2012-07-11 | 谢远鹏 | Micro precise injection molding machine |
-
2011
- 2011-11-15 CN CN201110360618.5A patent/CN102717496B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201092107Y (en) * | 2007-08-06 | 2008-07-30 | 谢远鹏 | Minitype experiment injection molding machine |
| CN201268082Y (en) * | 2008-09-27 | 2009-07-08 | 宋择民 | Efficient plastic injection moulding machine |
| CN201272008Y (en) * | 2008-09-27 | 2009-07-15 | 广东伊之密精密机械有限公司 | Energy-saving structure for melt adhesive drum of injection moulding machine |
| CN201720992U (en) * | 2010-07-13 | 2011-01-26 | 深圳市成中胜贸易有限公司 | Fully electrical double-screw injection molding machine |
| CN201989283U (en) * | 2010-12-24 | 2011-09-28 | 合肥普特化轻材料有限公司 | Power device of injection molding machine |
| CN202318827U (en) * | 2011-11-15 | 2012-07-11 | 谢远鹏 | Micro precise injection molding machine |
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| CN102717496A (en) | 2012-10-10 |
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