CN203764977U - Metal three-dimensional printer - Google Patents
Metal three-dimensional printer Download PDFInfo
- Publication number
- CN203764977U CN203764977U CN201420009714.4U CN201420009714U CN203764977U CN 203764977 U CN203764977 U CN 203764977U CN 201420009714 U CN201420009714 U CN 201420009714U CN 203764977 U CN203764977 U CN 203764977U
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- CN
- China
- Prior art keywords
- metal
- printhead
- dimensional printer
- wolfram steel
- hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000002184 metal Substances 0.000 title claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 42
- 230000006698 induction Effects 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000007639 printing Methods 0.000 claims abstract description 14
- 239000000523 sample Substances 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 23
- 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 description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000011261 inert gas Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000011214 refractory ceramic Substances 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 238000004861 thermometry Methods 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 239000012943 hotmelt Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 210000003484 anatomy Anatomy 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Abstract
The utility model discloses a metal three-dimensional printer which comprises a rack, a worktable, a printing device and a temperature controller, wherein the rack comprises a base body and a stand column arranged at the back end of the base body, the worktable can be movably arranged on the base body in an assembling way of being capable of moving along the X axis direction and the Y axis direction, the printing device comprises a high frequency electric induction heating device, a heating coil and a printing head, the high frequency electric induction heating device is arranged on the stand column through a movable base capable of moving along the Z axis direction, the heating coil is arranged at the front end of the high frequency electric induction heating device, the heating coil sleeves the outer surface of the printing head in an inlaying mode, the printing head is provided with a hole for metal wires to input, the temperature controller is used for controlling the heating power of the high frequency electric induction heating device, the temperature controller comprises an infrared temperature measuring probe, and the infrared temperature measuring probe is aligned to the lower end part of the printing head. The metal three-dimensional printer is high in heating temperature, wide in temperature controllable range, energy-saving, low in cost, simple in structure, convenient to use, high in production quality, strong in market competitiveness and the like.
Description
Technical field:
The utility model relates to former technical field in kind, refer in particular to a kind of simple in structure, cost is low, and metal three-dimensional printer easy to use, the market competitiveness is strong.
Background technology:
3D printer, i.e. a kind of machine of RP technique, it is a kind of taking mathematical model file as basis, uses powdery metal or the plastics etc. can jointing material, carrys out the technology of constructed object by the mode of successively printing.Past, its field such as mould manufacture, industrial design of being everlasting was used to modeling, existing just gradually for the direct manufacture of some products, meaned that this technology is universal.
The design process that 3D prints is: first carries out software modeling by computer, then the threedimensional model building up " anatomy " become to cross section successively, i.e. and tangent plane, thus instruct printer successively to print, and slim aspect is stacked up, until a solid body moulding.The difference of multi-functional 3D printer and conventional printer maximum is: " ink " that it uses is out and out raw material.Described raw material are generally hot melt tree lace, insert in the hot melt printing head of 3D printer the end of this hot melt tree lace, and hot melt printing head heats to realize by energising hot melt tree lace is carried out to melting, glue through melting flows out from hot melt printing head lower end, successively print, and by stacking slim aspect to realize solid body moulding.
Current 3D printer is widely used in forming plastic cement model, and it is less to be applied to the 3D printer of forming metal model, and the 3D printer that this forming metal model is used is all to adopt LASER HEATING, and its structure is very complicated, cost is higher.
In view of this, the inventor proposes following technical scheme.
Utility model content:
The purpose of this utility model is to overcome the deficiencies in the prior art, provide a kind of simple in structure, cost is low, and metal three-dimensional printer easy to use, the market competitiveness is strong.
In order to solve the problems of the technologies described above, the utility model has adopted following technical proposals: this metal three-dimensional printer comprises: a frame, and it comprises: a pedestal and be arranged at the column of pedestal rear end; One workbench, this workbench is movably installed on pedestal in the assembling mode that can move along X-direction and Y direction; One printing equipment, it comprises: the high-frequency electrical being installed on column by a Mobile base that can move along Z-direction is responded to heater, is installed on heater coil and printhead that high-frequency electrical is responded to heater front end and can be regulated according to thermograde pitch of turn between every circle, wherein, heater coil is nested in printhead outer surface, is provided with the hole for metal wire rod input in printhead; One for controlling the temperature controller of described high-frequency electrical induction heater heating power, and it comprises an infrared thermometry probe, the bottom of this infrared thermometry alignment probe printhead.
Furthermore; in technique scheme; described printhead comprises: a wolfram steel nozzle and one are fixed on the refractory ceramics protective sleeve of wolfram steel nozzle periphery and are embedded in the ceramic upper shield of wolfram steel upper end of nozzle; this wolfram steel upper end of nozzle is fixedly installed a support, and forms removable assembling by this support and high-frequency electrical induction heater.
Furthermore, in technique scheme, offer the described hole of running through upper and lower side in described wolfram steel nozzle, this hole diminishes from top to bottom gradually, and the diameter of this lower end, hole outlet is less than the diameter of metal wire rod.
Furthermore, in technique scheme, described ceramic upper shield is embedded in the upper end of described wolfram steel nozzle mesopore, and this ceramic jacket covers Yu Gai hole, the line hole connection of setting.
Furthermore, in technique scheme, between described refractory ceramics protective sleeve inwall and the groove of wolfram steel nozzle outer wall setting, be formed for spraying the Cooling Holes of inert gas.
Furthermore, in technique scheme, described heater coil is circumnutated and is formed by copper pipe, and in copper pipe, is formed with the passage that Cooling Water flows through.
Furthermore, in technique scheme, in described frame, be also provided with one for the feed mechanism to described printhead transferring metal wire rod, this feed mechanism comprises: the pinch roller of assembling and the servomotor for driving pinch roller to rotate in pairs, wherein, between this pinch roller, be formed with the gap for clamping metal wire rod feeding.
Adopt after technique scheme, the utility model has following beneficial effect compared with prior art:
1, the utility model adopts high-frequency electrical induction heater to coordinate heater coil to heat printhead, can effectively control heating-up temperature, to reach temperature stabilization, energy-conservation effect, it is high that it also has heating-up temperature, controlled range is wide, cost is low, advantages of simple structure and simple, order the utlity model has the higher market competitiveness.
2, between described printhead and high-frequency electrical induction heater, be dismountable assembling, assemble and use all very convenient.In addition, the core of heater coil is formed with the passage that cooling water flows through, so that itself has higher cooling effect.
3, the utility model can correspondingly be adjusted the size of the pitch of turn between diameter and every circle of every circle in heater coil, so that can conveniently adjust the temperature of printhead each several part, enter after printhead to meet metal wire body, from preheating, the thermograde softening, melt, extrude reaches optimum efficiency.
4, because refractory ceramics protective sleeve periphery is provided with the Cooling Holes for spraying inert gas; and spray inert gas when the work of described printhead by this Cooling Holes; so that oxidized when the metal liquid that can effectively prevent printhead ejection forms metal stack lamination on workbench; can also effectively play the effect of cooling forming to metal liquid; can effectively improve like this work quality of the present utility model, to produce superior in quality metal pattern product.
Brief description of the drawings:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the assembling schematic diagram of printhead and heater coil in the utility model;
Fig. 3 is the cutaway view of Fig. 2.
Detailed description of the invention:
Below in conjunction with specific embodiments and the drawings, the utility model is further illustrated.
Shown in Fig. 1-3, be a kind of metal three-dimensional printer, it comprises: a frame 1 and being installed in frame 1 and the workbench 2 that can move along X-direction and Y direction and printing equipment 3, the temperature controller 4 that is installed in frame 1 and can moves along Z-direction.
It comprises described frame 1: a pedestal 11 and be arranged at the column 12 of pedestal 11 rear ends, this column 12 stands on pedestal 11 rear ends.Described workbench 2 is movably installed on pedestal 11 in the assembling mode that can move along X-direction and Y direction.
Described printing equipment 3 comprises: the high-frequency electrical being installed on column 12 by a Mobile base that can move along Z-direction 13 is responded to heater 31, is installed on heater coil 32 and printhead 33 that high-frequency electrical is responded to heater 31 front ends and can be regulated according to thermograde pitch of turn between every circle, wherein, heater coil 32 is nested in printhead 33 outer surfaces, is provided with the hole 330 for metal wire rod input in printhead 33.
The utility model adopts high-frequency electrical induction heater 31 to coordinate heater coil 32 to heat printhead 33, can effectively control heating-up temperature, to reach temperature stabilization, energy-conservation effect, it is high that it also has heating-up temperature, controlled range is wide, cost is low, advantages of simple structure and simple.
Described printhead 33 comprises: a wolfram steel nozzle 331 and one are fixed on the refractory ceramics protective sleeve 332 of wolfram steel nozzle 331 peripheries and are embedded in the ceramic upper shield 333 of wolfram steel nozzle 331 upper ends; these wolfram steel nozzle 331 upper ends are fixedly installed a support 334, and form removable assembling by this support 334 and high-frequency electrical induction heater 31.
Described wolfram steel nozzle 331 has high temperature resistant, is not oxidized decortication, wear-resisting, durable advantage.
Between described printhead 33 and high-frequency electrical induction heater 31, be dismountable assembling, assemble and use all very convenient.
In described wolfram steel nozzle 331, offer the described hole 330 of running through upper and lower side, this hole 330 diminishes from top to bottom gradually, and the diameter of these hole 330 lower end outlets is less than the diameter of metal wire rod, make metal wire body can directly not be revealed in outside wolfram steel nozzle 331 through described hole 330.
Described ceramic upper shield 333 is embedded in the upper end of described wolfram steel nozzle 331 mesopores 330, and the 335Yu Gai hole, line hole 330 arranging on this pottery upper shield 333 is communicated with.
Between described refractory ceramics protective sleeve 332 inwalls and the groove of wolfram steel nozzle 331 outer wall settings, be formed for spraying the Cooling Holes of inert gas; and in the time that working, described printhead 33 sprays inert gas by this Cooling Holes; so that can effectively prevent that metal liquid that printhead 33 sprays is oxidized form metal stack lamination on workbench 2 time; can also effectively play the effect of cooling forming to metal liquid; can effectively improve like this work quality of the present utility model, to produce superior in quality mold product.Described inert gas comprises argon gas, helium, carbon dioxide or its mist etc.
Described heater coil 32 is circumnutated and is formed by copper pipe, and in copper pipe, is formed with the passage that Cooling Water flows through, so that itself has higher cooling effect.
Described heater coil 32 can regulate the pitch of turn between every circle according to thermograde, and wherein, the part efficiency of heating surface that pitch of turn is less is the highest.In addition, can also correspondingly adjust the size of the pitch of turn between diameter and every circle of every circle in heater coil 32, so that can conveniently adjust the temperature of printhead 33 each several parts, enter after printhead 33 to meet metal wire body, from preheating, the thermograde softening, melt, extrude reaches optimum efficiency.
In described frame 1, be also provided with one for the feed mechanism (not shown) to described printhead 33 transferring metal wire rods, this feed mechanism comprises: the pinch roller of assembling and the servomotor for driving pinch roller to rotate in pairs, wherein, between this pinch roller, be formed with the gap for clamping metal wire rod feeding.Described pinch roller is positioned at printhead 33 tops, and it can send into metal wire rod to printhead 33 by technique initialization.
Described temperature controller 4 is for controlling described high-frequency electrical induction heater 31 heating powers, and it comprises an infrared thermometry probe 41, the pop one's head in bottom of 41 align printhead 33 of this infrared thermometry.The temperature value detecting when infrared ray temperature probe 41 during lower than setting value, is controlled high-frequency electrical induction heater 31 and is improved heating power, and printhead 33 is normally worked; The temperature value detecting when infrared ray temperature probe 41 during higher than setting value, is controlled high-frequency electrical induction heater 31 and is reduced heating power, and printhead 33 is normally worked.
Certainly, the foregoing is only specific embodiment of the utility model, be not to limit the utility model practical range, all according to equivalence variation or modification that described in the utility model claim, structure, feature and principle are done, all should be included in the utility model claim.
Claims (7)
1. a metal three-dimensional printer, is characterized in that: comprising:
One frame (1), it comprises: a pedestal (11) and be arranged at the column (12) of pedestal (11) rear end;
One workbench (2), this workbench (2) is movably installed on pedestal (11) in the assembling mode that can move along X-direction and Y direction;
One printing equipment (3), it comprises: the high-frequency electrical being installed on column (12) by a Mobile base that can move along Z-direction (13) is responded to heater (31), is installed on heater coil (32) and printhead (33) that high-frequency electrical is responded to heater (31) front end and can be regulated according to thermograde pitch of turn between every circle, wherein, heater coil (32) is nested in printhead (33) outer surface, is provided with the hole (330) for metal wire rod input in printhead (33);
One for controlling the temperature controller (4) of described high-frequency electrical induction heater (31) heating power, and it comprises an infrared thermometry probe (41), the bottom of this infrared thermometry probe (41) align printhead (33).
2. a kind of metal three-dimensional printer according to claim 1; it is characterized in that: described printhead (33) comprising: a wolfram steel nozzle (331) and one are fixed on the peripheral refractory ceramics protective sleeve (332) of wolfram steel nozzle (331) and are embedded in the ceramic upper shield (333) of wolfram steel nozzle (331) upper end; this wolfram steel nozzle (331) upper end is fixedly installed a support (334), and forms removable assembling by this support (334) and high-frequency electrical induction heater (31).
3. a kind of metal three-dimensional printer according to claim 2, it is characterized in that: in described wolfram steel nozzle (331), offer the described hole (330) of running through upper and lower side, this hole (330) diminishes from top to bottom gradually, and the diameter of lower end, this hole (330) outlet is less than the diameter of metal wire rod.
4. a kind of metal three-dimensional printer according to claim 3, it is characterized in that: described ceramic upper shield (333) is embedded in the upper end of described wolfram steel nozzle (331) mesopore (330), and the upper line hole (335) arranging of this pottery upper shield (333) is communicated with this hole (330).
5. a kind of metal three-dimensional printer according to claim 2, is characterized in that: the Cooling Holes that is formed for spraying inert gas between described refractory ceramics protective sleeve (332) inwall and the groove of wolfram steel nozzle (331) outer wall setting.
6. according to a kind of metal three-dimensional printer described in claim 1-5 any one, it is characterized in that: described heater coil (32) is circumnutated and formed by copper pipe, and in copper pipe, is formed with the passage that Cooling Water flows through.
7. a kind of metal three-dimensional printer according to claim 6, it is characterized in that: in described frame (1), be also provided with one for the feed mechanism to described printhead (33) transferring metal wire rod, this feed mechanism comprises: the pinch roller of assembling and the servomotor for driving pinch roller to rotate in pairs, wherein, between this pinch roller, be formed with the gap for clamping metal wire rod feeding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009714.4U CN203764977U (en) | 2014-01-07 | 2014-01-07 | Metal three-dimensional printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009714.4U CN203764977U (en) | 2014-01-07 | 2014-01-07 | Metal three-dimensional printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203764977U true CN203764977U (en) | 2014-08-13 |
Family
ID=51282224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420009714.4U Expired - Fee Related CN203764977U (en) | 2014-01-07 | 2014-01-07 | Metal three-dimensional printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203764977U (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104550958A (en) * | 2014-12-19 | 2015-04-29 | 机械科学研究总院先进制造技术研究中心 | 3D metal printer nozzle |
| CN104646670A (en) * | 2015-03-06 | 2015-05-27 | 沈湧 | High-frequency induction melting type metal 3D (three-dimensional) printing machine |
| CN105499572A (en) * | 2016-01-05 | 2016-04-20 | 哈尔滨工程大学 | Extrusion spraying head of electromagnetic induction heating type 3D printer |
| CN105903970A (en) * | 2016-04-27 | 2016-08-31 | 华中科技大学 | Device and method for rapidly forming metal part through induction heating |
| CN106273456A (en) * | 2015-06-05 | 2017-01-04 | 成都金采科技有限公司 | A kind of 3D printer |
| CN106392076A (en) * | 2016-06-21 | 2017-02-15 | 中国科学院宁波材料技术与工程研究所 | 3D printing system and print head device thereof |
| US20170312849A1 (en) * | 2016-05-02 | 2017-11-02 | Electronics And Telecommunications Research Institute | Extruder for metal material and 3d printer using the same |
| CN109128681A (en) * | 2018-09-26 | 2019-01-04 | 刘军发 | A kind of electrode induction melting increasing material manufacturing apparatus and method for |
| WO2019109114A1 (en) * | 2017-12-05 | 2019-06-13 | Schreiner Konrad | Printhead for the layer-by-layer application of material |
| WO2020078055A1 (en) * | 2018-10-16 | 2020-04-23 | 南京尚吉增材制造研究院有限公司 | Metal additive manufacturing method and device employing continuous powder supply and induction heating |
| CN113423523A (en) * | 2018-12-14 | 2021-09-21 | 罗伯特·博世有限公司 | Print head for 3D printing of metal, device for additive manufacturing of three-dimensional workpieces comprising a print head and method for operating a device |
-
2014
- 2014-01-07 CN CN201420009714.4U patent/CN203764977U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104550958A (en) * | 2014-12-19 | 2015-04-29 | 机械科学研究总院先进制造技术研究中心 | 3D metal printer nozzle |
| CN104646670A (en) * | 2015-03-06 | 2015-05-27 | 沈湧 | High-frequency induction melting type metal 3D (three-dimensional) printing machine |
| CN106273456A (en) * | 2015-06-05 | 2017-01-04 | 成都金采科技有限公司 | A kind of 3D printer |
| CN105499572A (en) * | 2016-01-05 | 2016-04-20 | 哈尔滨工程大学 | Extrusion spraying head of electromagnetic induction heating type 3D printer |
| CN105499572B (en) * | 2016-01-05 | 2018-01-19 | 哈尔滨工程大学 | A kind of electromagnetic induction heating type 3D printer extrudes shower nozzle |
| CN105903970A (en) * | 2016-04-27 | 2016-08-31 | 华中科技大学 | Device and method for rapidly forming metal part through induction heating |
| US20170312849A1 (en) * | 2016-05-02 | 2017-11-02 | Electronics And Telecommunications Research Institute | Extruder for metal material and 3d printer using the same |
| CN107335806A (en) * | 2016-05-02 | 2017-11-10 | 韩国电子通信研究院 | Extruder for metal material and the 3D printer using extruder |
| US11110540B2 (en) * | 2016-05-02 | 2021-09-07 | Electronics And Telecommunications Research Institute | Extruder for metal material and 3D printer using the same |
| CN106392076A (en) * | 2016-06-21 | 2017-02-15 | 中国科学院宁波材料技术与工程研究所 | 3D printing system and print head device thereof |
| WO2019109114A1 (en) * | 2017-12-05 | 2019-06-13 | Schreiner Konrad | Printhead for the layer-by-layer application of material |
| CN109128681A (en) * | 2018-09-26 | 2019-01-04 | 刘军发 | A kind of electrode induction melting increasing material manufacturing apparatus and method for |
| WO2020078055A1 (en) * | 2018-10-16 | 2020-04-23 | 南京尚吉增材制造研究院有限公司 | Metal additive manufacturing method and device employing continuous powder supply and induction heating |
| CN113423523A (en) * | 2018-12-14 | 2021-09-21 | 罗伯特·博世有限公司 | Print head for 3D printing of metal, device for additive manufacturing of three-dimensional workpieces comprising a print head and method for operating a device |
| CN113423523B (en) * | 2018-12-14 | 2023-11-10 | 罗伯特·博世有限公司 | Print head for 3D printing of metals, device for additive manufacturing of three-dimensional workpieces comprising a print head, and method for operating a device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 |
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| CF01 | Termination of patent right due to non-payment of annual fee |