CN203779870U - Printing head and three-dimensional printer - Google Patents
Printing head and three-dimensional printer Download PDFInfo
- Publication number
- CN203779870U CN203779870U CN201420100839.8U CN201420100839U CN203779870U CN 203779870 U CN203779870 U CN 203779870U CN 201420100839 U CN201420100839 U CN 201420100839U CN 203779870 U CN203779870 U CN 203779870U
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- heater
- printing
- dimensional printer
- printhead
- printing nozzle
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Abstract
The utility model relates to a printing head for a fused deposition type rapid prototyping device. The printing head comprises a printing spray nozzle, a heater, a feeding device and a feeding pressure device, wherein a discharge opening of the feeding device is communicated with a feeding opening of the heater; the printing spray nozzle is arranged on a printing vehicle of the three-dimensional printer; the heater is arranged on a rack of the three-dimensional printer; a discharge opening of the heater is communicated with a feeding opening of the printing spray nozzle through a hose, namely, a molten molding material in a heating fusion chamber of the heater is conveyed to the inner part of the printing spray nozzle through the high temperature resistant hose; the feeding pressure device is used for providing feeding pressure to the heating fusion chamber of the heater. The printing head aims at reducing vibration of the printing spray nozzle of the printing head in the printing process so as to improve the printing quality. In addition, the utility model also provides the three-dimensional printer comprising the printing head.
Description
Technical field
The rapid molding device that the utility model relates to a kind of parts of rapid molding device and comprises these parts, particularly a kind of for the printhead of fusion sediment type rapid molding device and the three-dimensional printer that comprises this printhead.
Background technology
Three-dimensional printer, is a kind of based on mathematical model, utilizes powdery metal or plastic or other material, constructs the equipment of three-dimensional body by the mode of successively printing.Wherein a kind of three-dimensional printer is to supply with moulding material with the form of filament to printhead, moulding material is heated to molten condition in electrically heated mode in printhead, and three-dimensional body is printed in mode in layer in the path that the printhead that printhead produces the controller according to three-dimensional printer moves relative to substrate.
Notification number is to have described a kind of three-dimensional printer from filament form to printhead that supply with moulding material with in the background technology of patent documentation of CN1216726C, referring to Fig. 1, on reel 011, be wound with filament 013, this reel 011 is mounted in the rotating shaft 012 of reel installing rack of three-dimensional printer, thereby can realizes the printhead 015 that filament 013 is offered to three-dimensional printer.In use, filament 013 is pulled out from reel 011, make the filament being straightened by the conduit 014 of being made by the less material of frictional resistance, until filament is supplied to a pair of feed roller 0152 and 0153 being driven by motor 0154 on printhead 015, under the driving of feed roller 0152 and 0153, filament 013 enters heater 0151, filament is in heater 0151, moulding material through being heated into molten condition, under the effect of follow-up filament thrust, is extruded and is removably deposited on objective table from being located at the printing nozzle 01511 of heater 0151 end; The controller of this three-dimensional printer moves in the X-Y plane of level by controlling printhead 015, controls objective table in the motion of vertical Z-direction simultaneously, thus in layer print three-dimensional body; In addition, the speed of filament also controlled feed roller 0152 and 0153 and supplying with to heater 0151 by the controller of this three-dimensional printer.Because printhead 015 phase countershaft 012 is movably, so conduit 014 is a flexible pipe; Be installed on integrated heater 0151, printing nozzle 01511, motor 0154, feed roller 0152 and feed roller 0153 on the printhead 015 of printing on car, have very large inertia so the quality of printhead is very large, cause its response sensitivity to reduce, and in speed-change process, easily cause vibrations, cause printing nozzle constantly vibrations in print procedure, there is ripple in the surface of the profiled member printing, the quality that impact is printed; The rotation of motor 0154 and speed change also can cause the vibrations of printhead; In addition, the increase of quality also can be accelerated the wearing and tearing of printhead and guide rail Contact face.
Notification number is to have announced a kind of print head assembly being used in fusion sediment moulding system in the patent documentation of CN203381196U, this print head assembly comprises cooling unit, this cooling unit is a unit that comprises fan, under the guiding of the air-flow that air produces at fan, in liquifier pump assembly and barrel assembly, force the internals of cooling printhead, thereby preventing from separating and making material melts prematurely.Fan is installed on printhead, and the vibroseis that it not only forms printhead vibrations also can make the inertia of printhead increase, thereby reduce print quality.
Referring to Fig. 2, a kind of existing three-dimensional printer, comprises printhead 03, print cartridge, objective table 04 and print cartridge installing rack 02, and print cartridge is made up of the filament cassette 021, filament cassette 022, filament cassette 023 and the filament cassette 024 that carry respectively different colours filament.
Referring to Fig. 3, printhead 03 comprises printing nozzle, heater, feed arrangement and cooling device.In order to print polychrome target profiled member, the heater of printhead 03 has heating and melting chamber 0321,0322,0323 and 0324, the printing nozzle 0311,0312,0313 and 0314 being communicated with the discharging opening of these four heating and melting chambers accordingly, the feed arrangement 0331,0332,0333 and 0334 being communicated with the charging aperture of four heating and melting chambers accordingly, is installed on the cooling device 0341,0342,0343 and 0344 on the matrix of four heating and melting chambers accordingly.In order to realize multi-color printing, not only increase the quality of printhead, also increase the vibroseis that causes printhead vibrations, for example send the fan on drive motors and the cooling device on materials device to, thereby reduced print quality.
Summary of the invention
Main purpose of the present utility model is to provide a kind of printhead for three-dimensional printer, and the vibrations of the printing nozzle that is intended to reduce printhead in print procedure improve the print quality of three-dimensional printer.
Another object of the present utility model is to provide a kind of three-dimensional printer that comprises above-mentioned printhead.
In order to realize above-mentioned main purpose, the printhead that the utility model is provided for three-dimensional printer comprises printing nozzle, heater and feed arrangement; The discharging opening of feed arrangement is communicated with the charging aperture of heater; Wherein, printing nozzle is installed on the printing car of three-dimensional printer; Heater is installed in the frame of three-dimensional printer; The discharging opening of heater and the charging aperture of printing nozzle, by soft pipe connection, are delivered to the moulding material that is molten condition in the heating and melting chamber of heater in printing nozzle by resistant to elevated temperatures flexible pipe; Feeding pressure apparatus, provides feeding pressure for the heating and melting chamber to heater.
From above scheme, in print procedure, that moves with the printing car of three-dimensional printer only has printing nozzle, reduce the quality of motion parts, compared with prior art, its response sensitivity is improved, meet flying print requirement, and reduce the vibrations of the printing nozzle causing due to speed change, effectively isolate the impact on printing nozzle of vibroseis on printhead, reduce the vibrations of printing nozzle in print procedure, print position is more accurate, improve the print quality of three-dimensional printer, be particularly suitable for the three-dimensional printer that multiple printing nozzles are printed together, can also effectively reduce the wearing and tearing of printing between car and guide rail contact-making surface, because being provides pressure that the moulding material that is molten condition is extruded to heating and melting chamber by feeding pressure apparatus to heating and melting chamber, the control of being more convenient for to extruded velocity, the different and impact of the mobility that can effectively tackle moulding material is to the problem of printing nozzle feed.In addition, feed arrangement is installed in the frame of three-dimensional printer, for three-dimensional printer from filament form to printhead that supply with forming material with, the charging aperture of feed arrangement can be located near the discharging opening of feeding device of three-dimensional printer, compared with prior art, without the conduit with less friction, the filament in feeding device is guided to printhead; For providing three-dimensional printer granular or powder compacting material with hopper to printhead, the charging aperture of feed arrangement can be located near the discharging opening of hopper, compared with prior art, without using conduit to be communicated with or hopper being located at and being printed on car.
A concrete scheme is that this printhead also comprises negative pressure device, provides negative pressure for the heating and melting chamber to heater.Complete after the printing of target profiled member, the controller control negative pressure device of three-dimensional printer provides negative pressure to the heating and melting chamber of heater, moulding material remaining in flexible pipe and printing nozzle is sucked back in heating and melting chamber, prevent from stopping up flexible pipe and printing nozzle, affect follow-up printing.
Another concrete scheme is that this printhead also comprises cooling device, for regulating and controlling the temperature of heater and feed arrangement.Regulate and control the temperature of heater by cooling device, make the temperature of the moulding material of extruding from the discharging opening of heater even, ensure the print quality of target profiled member; Control the temperature of feed arrangement, can prevent moulding material melted by heating and stop up the discharging opening of feed arrangement in feed arrangement.
Scheme is more specifically, and flexible pipe has one layer of heat preservation layer, can be the heat-insulation layer without heating function at flexible pipe outer wrapping one deck, can be also that parcel one deck has the heat-insulation layer of heating function, can also be flexible pipe itself have insulation and/heating function.Can effectively prevent that the moulding material that is molten condition from freezing in flexible pipe, stop up flexible pipe; Can especially effectively tackle the variation of flexible pipe ambient temperature.
For realizing above-mentioned another object, the three-dimensional printer that the utility model provides comprises frame, controller, feeding device and printhead; Printhead comprises printing nozzle, heater and feed arrangement, and the discharging opening of feed arrangement is communicated with the charging aperture of heater; The printing car being controlled by the controller is installed in frame movably; Feeding device is for being provided as shaped material to feed arrangement; Wherein, printing nozzle is installed on and prints on car; Heater is installed in frame; The discharging opening of heater and the charging aperture of printing nozzle pass through soft pipe connection; Feeding pressure apparatus, provides feeding pressure for the heating and melting chamber to heater.
From above scheme, in print procedure, only has printing nozzle with what print that car moves, reduce the quality of motion parts, compared with prior art, its response sensitivity is improved, meet flying print demand, and reduce the vibrations of the printing nozzle causing due to speed change, effectively isolate the impact on printing nozzle of vibroseis on printhead, reduce the vibrations of printing nozzle in print procedure, print position is more accurate, put forward print quality, be particularly suitable for the three-dimensional printer that multiple printing nozzles are printed together; Can also effectively reduce the wearing and tearing of printing between car and guide rail contact-making surface; Because being provides pressure that the moulding material that is molten condition is extruded to heating and melting chamber by feeding pressure apparatus to heating and melting chamber, the control of being more convenient for to extruded velocity, can tackle the problem of the different and impact of different moulding material mobility to printing nozzle feed effectively.
A concrete scheme is that above-mentioned three-dimensional printer also wraps negative pressure device, provides negative pressure for the heating and melting chamber to heater.
Another concrete scheme is that above-mentioned three-dimensional printer also comprises cooling device, for regulating and controlling the temperature of heater and feed arrangement.
One more specifically scheme be, flexible pipe has one layer of heat preservation layer, can be the heat-insulation layer without heating function at flexible pipe outer wrapping one deck, can be also that parcel one deck has the heat-insulation layer of heating function, can also be flexible pipe itself have insulation and/heating function.
Another more specifically scheme be that the discharging opening of feeding device is located near the charging aperture of feed arrangement.Can realize feeding device and directly be provided as shaped material to feed arrangement, without using conduit to connect the two, compared with prior art, can more effectively supply with moulding material to printhead.
Another more specifically scheme be that controller, according to the indoor temperature of temperature adjusting heating and melting of moulding material in the flexible pipe that detects and printing nozzle, regulates and controls the temperature of the moulding material of extruding from the discharging opening of heater.The temperature of the moulding material of extruding from printing nozzle is kept evenly, ensure the quality of target profiled member and successfully manage the variation of printing environment.
Brief description of the drawings
Fig. 1 is a kind of structural representation of existing three-dimensional printer;
Fig. 2 is the structure chart of another kind of existing three-dimensional printer;
Fig. 3 is the structural representation of the printhead of three-dimensional printer in Fig. 2;
Fig. 4 is the structural representation of the utility model printhead the first embodiment;
Fig. 5 is the structural representation of the utility model printhead the second embodiment;
Fig. 6 is A partial enlarged drawing in Fig. 5.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Detailed description of the invention
Printhead the first embodiment
Referring to Fig. 4, printhead is made up of printing nozzle 1, flexible pipe 2, heater 3, feed arrangement 4, cooling device 5 and feed pressure device 6.The discharging opening of heater 3 is communicated with by flexible pipe 2 with the charging aperture of printing nozzle 1, and flexible pipe 2 is heat-resistant light flexible pipe, for the moulding material that is heated to molten condition in the heating and melting chamber 31 of heater 3 is imported to printing nozzle 1; Feed arrangement 4 has a pair of feed roller near the charging aperture of being located at heater 3, under the control of 3 D-printing machine controller, for the filament on three-dimensional printer filament cassette is sent in heating and melting chamber 31 with given pace; Cooling device 5 has a fan 51, fan 51 rotates the air-flow producing for heater 3 and heater 3 are regulated and controled with the temperature of feed arrangement 4 junctions, the temperature that guarantee enters the moulding material in flexible pipe 2 is even, improve printing effect, can also prevent that moulding material from affecting charging at heater 3 with feed arrangement 4 junction melted by heating; Feed pressure device 6 is used to heating and melting chamber 31 that certain air pressure is provided, to in heating and melting chamber 31, be pressed in flexible pipe 2 in the moulding material of molten condition, and spray and realize and printing from the outlet of printing nozzle 1, the flowing velocity of shaped material in flexible pipe 2 and printing nozzle 1 can be effectively controlled to by the air pressure of controlling in heating and melting chamber 31, the moulding material that mobility is different can be effectively tackled; Printing nozzle 1 is provided with the installing plate 11 on the printing car for printing nozzle 1 being installed on to three-dimensional printer.
Printhead the second embodiment
As the explanation to the utility model printhead the second embodiment, below only to describing with the difference of above-mentioned printhead the first embodiment.
Referring to Fig. 5 and Fig. 6, the quantity of heating and melting chamber, feed arrangement, cooling device and the feed pressure device of the printing nozzle of this routine printhead, flexible pipe, heater is four, be respectively printing nozzle 211,212,213 and 214, flexible pipe 221,222,223 and 224, the heating and melting chamber 231,232,233 and 234 of heater, feed arrangement 241,242,243 and 244, cooling device 251,252,253 and 254, and feed pressure device 261,262,263 and 264; Four printing nozzles are installed on the printing car of three-dimensional printer by installing plate 2111, are respectively used to print the moulding material of three kinds of primary colours and black; Flexible pipe 221,222,223 is connected printing nozzle and heater with 224 with the form of comb.
Printhead the 3rd embodiment
As the explanation to the utility model the 3rd embodiment, below only to describing with the difference of above-mentioned printhead the first embodiment, on this routine printhead, be also provided with negative pressure device, be used to the heating and melting chamber of heater that negative pressure is provided, complete after the printing of target profiled member, moulding material in printing nozzle and flexible pipe is sucked back in heating and melting chamber, effectively prevent that remaining moulding material is condensed in flexible pipe and printing nozzle, hinders follow-up printing.
Printhead the 4th embodiment
As the explanation to the utility model the 4th embodiment, below only to describing with the difference of above-mentioned printhead the first embodiment, outside flexible pipe, also cover has the heat-insulation layer of one deck without heating function, be particularly suitable for the printhead that hose length is grown, prevent moulding material cooled and solidified and stop up flexible pipe in flexible pipe.
Printhead the 5th embodiment
As the explanation to the utility model printhead the 5th embodiment, below only to describing with the difference of above-mentioned printhead the 4th embodiment, heat-insulation layer is the heat preservation layer that one deck is controlled by the controller.
Three-dimensional printer the first embodiment
Three-dimensional printer is made up of frame, printing car, feeding device, controller and printhead; Printhead is identical with above-mentioned printhead the first embodiment, by the installing plate of printing nozzle, printing nozzle is installed on and is printed on car, and heater is installed in frame; Print car and be located at movably on the guide rail of frame, printing nozzle is realized the motion of relative objective table with the movement of printing car; Feeding device is the filament cassette being installed on the filament cassette installing rack of frame, is provided as shaped material with the form of filament to the feed arrangement of printhead; The charging aperture of the feed arrangement of printhead is located near the discharging opening of filament cassette.
In print procedure, by filament pull-out in filament cassette, until filament is supplied on feed arrangement by motor-driven a pair of feed roller, thereby the speed of filament controlled feed arrangement and supplies with to the heating and melting chamber of heater by controller by controlling the rotating speed of motor; The filament heating that controller control heater is indoor to heating and melting, in the time that filament is heated to molten condition, be heated to the temperature higher than the freezing point of moulding material by the temperature of moulding material, controller control feed pressure device applies certain pressure to heating and melting chamber, the moulding material that is molten condition with certain speed by flexible pipe and arrive printing nozzle, and under the effect of pressure with given pace ejection printing nozzle; The motion of the relative guide rail of car is printed in controller control, relatively carries stage by the motion of predetermined design path thereby realize printing nozzle, prints target profiled member; After completing the printing of target profiled member, controller control printing car shifts out printing nozzle the scope of target profiled member, and control feed pressure device and provide high pressure to heating and melting chamber, moulding material in flexible pipe and printing nozzle is extruded to flexible pipe and printing nozzle, prevent that these moulding materials are condensed in flexible pipe and printing nozzle, hinder printing next time.
Three-dimensional printer the second embodiment
As the explanation to the utility model three-dimensional printer the second embodiment, below only to describing with the difference of above-mentioned three-dimensional printer the first embodiment, wherein printhead is the printhead in above-mentioned printhead the second embodiment, instead of printhead in above-mentioned printhead the first embodiment.
In print procedure, controller is according to the designing requirement of target profiled member, and the printhead of controlling respectively different colours prints the different colours part of target profiled member, thereby realizes the printing of polychrome target profiled member.
Three-dimensional printer the 3rd embodiment
As the explanation to the utility model three-dimensional printer the 3rd embodiment, below only to describing with the difference of above-mentioned three-dimensional printer the first embodiment.
On the printhead of this routine three-dimensional printer, be also provided with negative pressure device, be used to the heating and melting chamber of heater that negative pressure is provided, the moulding material in printing nozzle and flexible pipe is sucked back to heating and melting indoor.
In print procedure, after completing the printing of target profiled member, controller cuts out feed pressure device, open negative pressure device, remaining moulding material in flexible pipe and printing nozzle is sucked back to heating and melting chamber, prevent that remaining moulding material is condensed in flexible pipe and printing nozzle, impact printing next time.
Three-dimensional printer the 4th embodiment
As the explanation to the utility model three-dimensional printer the 4th embodiment, below only to describing with the difference of above-mentioned three-dimensional printer the first embodiment, outside flexible pipe, also cover has the heat-insulation layer of one deck without heating function.
Three-dimensional printer the 5th embodiment
As the explanation to the utility model three-dimensional printer the 5th embodiment, below only to describing with the difference of above-mentioned three-dimensional printer the 4th embodiment, heat-insulation layer is the heat preservation layer that one deck is controlled by the controller.
Three-dimensional printer the 6th embodiment
As the explanation to the utility model three-dimensional printer the 6th embodiment, below only to describing with the difference of above-mentioned three-dimensional printer the 6th embodiment, wherein feeding device is not the filament cassette that is provided as shaped material with silk material form to printhead, but is provided as the hopper of shaped material to printhead with granular or powder type.
Design of the present utility model is mainly by the printing nozzle of printhead being installed on the printing car of three-dimensional printer, move with printing car, other parts of printhead are installed in the frame of three-dimensional printer, between the heater of printhead and printing nozzle, pass through soft pipe connection, reduce the quality of motion parts, and then improve the response sensitivity of printing car, and reduce the vibrations of printing nozzle in print procedure, improve print quality; According to this design, the structure of printhead, feed mode and control mode also have multiple apparent variation.
Claims (10)
1. printhead, for three-dimensional printer, comprises printing nozzle, heater and feed arrangement;
The discharging opening of described feed arrangement is communicated with the charging aperture of described heater;
It is characterized in that:
Described printing nozzle is installed on the printing car of described three-dimensional printer;
Described heater is installed in the frame of described three-dimensional printer;
The discharging opening of described heater and the charging aperture of described printing nozzle pass through soft pipe connection;
Feeding pressure apparatus, provides feeding pressure for the heating and melting chamber to described heater.
2. printhead according to claim 1, is characterized in that:
Also comprise negative pressure device, for providing negative pressure to described heating and melting chamber.
3. printhead according to claim 1, is characterized in that:
Also comprise cooling device, for regulating and controlling the temperature of described heater and described feed arrangement.
4. according to printhead described in claims 1 to 3 any one, it is characterized in that:
Described flexible pipe has one layer of heat preservation layer.
5. three-dimensional printer, comprises frame, controller, feeding device and printhead;
Described printhead comprises printing nozzle, heater and feed arrangement, and the discharging opening of described feed arrangement is communicated with the charging aperture of described heater;
The printing car that is subject to described controller control is installed in described frame movably;
Described feeding device is for being provided as shaped material to described feed arrangement;
It is characterized in that:
Described printing nozzle is installed on described printing car;
Described heater is installed in described frame;
The discharging opening of described heater and the charging aperture of described printing nozzle pass through soft pipe connection;
Feeding pressure apparatus, provides feeding pressure for the heating and melting chamber to described heater.
6. three-dimensional printer according to claim 5, is characterized in that:
Also comprise negative pressure device, for providing negative pressure to described heating and melting chamber.
7. three-dimensional printer according to claim 5, is characterized in that:
Also comprise cooling device, for regulating and controlling the temperature of described heater and described feed arrangement.
8. according to three-dimensional printer described in claim 5 to 7 any one, it is characterized in that:
Described flexible pipe has one layer of heat preservation layer.
9. according to three-dimensional printer described in claim 5 to 7 any one, it is characterized in that:
The discharging opening of described feeding device is located near the charging aperture of described feed arrangement.
10. according to three-dimensional printer described in claim 5 to 7 any one, it is characterized in that:
Described controller is according to the indoor temperature of heating and melting described in the temperature adjusting of moulding material in described flexible pipe and described printing nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420100839.8U CN203779870U (en) | 2014-03-06 | 2014-03-06 | Printing head and three-dimensional printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420100839.8U CN203779870U (en) | 2014-03-06 | 2014-03-06 | Printing head and three-dimensional printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203779870U true CN203779870U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420100839.8U Expired - Fee Related CN203779870U (en) | 2014-03-06 | 2014-03-06 | Printing head and three-dimensional printer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203779870U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895223A (en) * | 2014-03-06 | 2014-07-02 | 珠海天威飞马打印耗材有限公司 | Printing head and three-dimensional printing machine |
| CN107009092A (en) * | 2015-12-11 | 2017-08-04 | 福特全球技术公司 | Vehicle assembly is manufactured |
| TWI623441B (en) * | 2014-12-31 | 2018-05-11 | 遠東科技大學 | 3d printing device with automatic paint dispenser |
| CN109760312A (en) * | 2019-02-26 | 2019-05-17 | 上海氢流三维科技有限公司 | A kind of high performance plastics 3D printer and its control method |
-
2014
- 2014-03-06 CN CN201420100839.8U patent/CN203779870U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103895223A (en) * | 2014-03-06 | 2014-07-02 | 珠海天威飞马打印耗材有限公司 | Printing head and three-dimensional printing machine |
| WO2015131833A1 (en) * | 2014-03-06 | 2015-09-11 | 珠海天威飞马打印耗材有限公司 | Print head and three-dimensional printer |
| CN103895223B (en) * | 2014-03-06 | 2016-08-24 | 珠海天威飞马打印耗材有限公司 | Printhead and three-dimensional printer |
| TWI623441B (en) * | 2014-12-31 | 2018-05-11 | 遠東科技大學 | 3d printing device with automatic paint dispenser |
| CN107009092A (en) * | 2015-12-11 | 2017-08-04 | 福特全球技术公司 | Vehicle assembly is manufactured |
| US10307781B2 (en) | 2015-12-11 | 2019-06-04 | Ford Global Technologies, Llc | Vehicle component fabrication |
| CN109760312A (en) * | 2019-02-26 | 2019-05-17 | 上海氢流三维科技有限公司 | A kind of high performance plastics 3D printer and its control method |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20200306 |
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| CF01 | Termination of patent right due to non-payment of annual fee |