CN103507273B - Extruded type wire rod melting heat nozzle assembly and use the 3D printer of this assembly - Google Patents
Extruded type wire rod melting heat nozzle assembly and use the 3D printer of this assembly Download PDFInfo
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- CN103507273B CN103507273B CN201310448021.5A CN201310448021A CN103507273B CN 103507273 B CN103507273 B CN 103507273B CN 201310448021 A CN201310448021 A CN 201310448021A CN 103507273 B CN103507273 B CN 103507273B
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- heating tube
- section
- instlated tubular
- wire rod
- sleeve
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- 238000002844 melting Methods 0.000 title claims abstract description 40
- 230000008018 melting Effects 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 69
- 239000011148 porous material Substances 0.000 claims abstract description 23
- 238000003032 molecular docking Methods 0.000 claims abstract description 13
- 230000002093 peripheral effect Effects 0.000 claims abstract description 13
- 238000010276 construction Methods 0.000 claims abstract description 11
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 235000009967 Erodium cicutarium Nutrition 0.000 claims description 13
- 239000004411 aluminium Substances 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000004044 response Effects 0.000 abstract description 4
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 230000005144 thermotropism Effects 0.000 description 2
- 241000680172 Platytroctidae Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
The present invention relates to extruded type wire rod melting heat nozzle assembly and use the 3D printer of this assembly.The instlated tubular that wherein extruded type wire rod melting heat nozzle assembly comprises the heating tube for the formation of molten room that axis extends along the vertical direction, docking is arranged on heating tube upper end, the pore of heating tube has epimere and hypomere in the vertical direction, epimere is that the sleeve coaxially plugged for instlated tubular coordinates section, hypomere for molten room, the lower end of instlated tubular is inserted sleeve and is coordinated the degree of depth of one section of setting in section and formed and plug together docking structure, the pore of instlated tubular communicates with molten room, and the pore of heating tube has the hermetically-sealed construction be sealed and matched with the bottom end face of heating tube and/or bottom outer peripheral face.Because instlated tubular heat conductivility is poor, therefore the wire rod only entering the molten room of sleeve cooperation pars infrasegmentalis could by heating and melting, thus shortening the length of molten room, the inertia of melting wire rod entirety all reduces with the adhesive force of the molten chamber interior walls be subject to, and enters silk and moves back a fast response time.
Description
Technical field
The present invention relates to extruded type wire rod melting heat nozzle assembly and use the 3D printer of this assembly.
Background technology
Some occasions need by thermoplastics type's wire rod by the melting of extruded type wire rod melting heat nozzle assembly after extrude from extrusion 99, such as, adopt fused glass pellet (fuseddepositionmodeling in prior art, FDM) the 3D printer of technology, its printhead is provided with extruded type wire rod melting heat nozzle assembly, the structure of this assembly, as shown in Fig. 1-Fig. 2, comprising the gusset piece 90 on the corresponding moving assembly for being fixed on printer, being assemblied in cold junction assembly 92 on gusset piece 90 and hot junction assembly 95.Wherein gusset piece 90 is provided with the wire rod perforation 91 penetrated for wire rod, and cold junction assembly 92 comprises the instlated tubular 93, the heat sink copper pot 94 be set on instlated tubular 93 that are docked in wire rod perforation 91, and hot junction assembly 95 comprises the heating tube 96 being provided with axially extending bore.The end face on heating tube 96 top docks with instlated tubular 93, middle part is provided with heater 97, lower end is fixed with hot mouth 98, the outer peripheral face on heating tube 96 top is connected with the corresponding insulating supports 910 arranged by external screw thread, insulating supports 910 is fixed, to realize fixing and avoiding the heat conduction of heating tube 96 to other parts heating tube 96 with gusset piece 90 by seat board 911 and bolt 912.The lower surface of heat sink copper pot 94 and the upper surface compression fit of insulating supports 910, to avoid insulating supports 910 overheated.During use, the pore of heating tube 96 forms molten room 913, and instlated tubular 93 thermal conductivity is very poor, and the wire rod in instlated tubular 93 then can not be melted.Wire rod penetrates from the wire rod perforation 91 gusset piece 90, enter in hot mouth 98 through instlated tubular 93, heating tube 96, wire rod in molten room 913 is heated to molten condition, corresponding wire feeder promotes wire rod thermotropism mouth 98 and moves when needs discharging, the wire rod of molten condition in molten room 913 can be extruded from the extrusion 99 of hot mouth 98.
But, heating tube 96 in the extruded type wire rod melting heat nozzle assembly of said structure is longer by the limited length of mounting structure, therefore too much thawing wire rod can be retained in molten room 913, due to the inertia of liquid body and the adhesive force of thawing wire rod and molten room 913 inwall, enter silk in printing and move back silk and will there is certain delay, response speed is slow, thus have impact on print quality.And, because instlated tubular 93 and heating tube 96 are that end face docks and is connected, therefore melt wire rod and easily overflow generation flash from both docking faying faces, during hot nozzle assembly fallback action, flash can enter instlated tubular 93 with fallback action and form melting material cold front, cause instlated tubular 93 and heating tube 96 end face can not normal press seal, and the melting material cold front of irregular form can hinder wire rod after course feed, will cause hot mouth 98 cannot wire vent time serious.Moreover the heat dispersion of heat sink copper pot 94 is not good, and its top needs correspondence to arrange support set location, complex structure.
Summary of the invention
The object of this invention is to provide a kind of enter silk move back silk and respond fast extruded type wire rod melting heat nozzle assembly, a kind of 3D printer using this assembly is provided simultaneously.
The technical scheme that in the present invention, extruded type wire rod melting heat nozzle assembly adopts is: extruded type wire rod melting heat nozzle assembly, comprise the heating tube for the formation of molten room that axis extends along the vertical direction, docking is arranged on the instlated tubular of heating tube upper end, the pore of described heating tube has epimere and hypomere in the vertical direction, epimere is that the sleeve coaxially plugged for instlated tubular coordinates section, hypomere is molten room, the lower end of described instlated tubular is inserted described sleeve and is coordinated the degree of depth of one section of setting in section and formed and plug together docking structure, the pore of described instlated tubular communicates with described molten room, the pore of described heating tube has the hermetically-sealed construction be sealed and matched with the bottom end face of described heating tube and/or bottom outer peripheral face.
The pore of described heating tube is the shoulder hole that top diameter is greater than base diameter, and described sleeve cooperation section is the top section of shoulder hole, and described hermetically-sealed construction comprises the internal face coordinating section in shoulder hole towards the annular table terrace at heating tube top and sleeve.
The internal diameter of described instlated tubular is greater than the diameter of molten room.
The top of described heating tube is provided with the insulating supports for fixing heating tube, and described insulating supports top is provided with the radiating piece with its top end face compression fit, and described radiating piece is heronsbill aluminium section bar fin.
Heat insulating mattress is provided with between the top end face of described heronsbill aluminium section bar fin and the gusset piece of extruded type wire rod melting heat nozzle assembly.
The technical scheme that in the present invention, 3D printer adopts is: 3D printer, comprise the printhead being provided with extruded type wire rod melting heat nozzle assembly, described extruded type wire rod melting heat nozzle assembly comprises the heating tube for the formation of molten room that axis extends along the vertical direction, docking is arranged on the instlated tubular of heating tube upper end, the pore of described heating tube has epimere and hypomere in the vertical direction, epimere is that the sleeve coaxially plugged for instlated tubular coordinates section, hypomere is molten room, the lower end of described instlated tubular is inserted described sleeve and is coordinated the degree of depth of one section of setting in section and formed and plug together docking structure, the pore of described instlated tubular communicates with described molten room, the pore of described heating tube has the hermetically-sealed construction be sealed and matched with the bottom end face of described heating tube and/or bottom outer peripheral face.
The pore of described heating tube is the shoulder hole that top diameter is greater than base diameter, and described sleeve cooperation section is the top section of shoulder hole, and described hermetically-sealed construction comprises the internal face coordinating section in shoulder hole towards the annular table terrace at heating tube top and sleeve.
The internal diameter of described instlated tubular is greater than the diameter of molten room.
The top of described heating tube is provided with the insulating supports for fixing heating tube, and described insulating supports top is provided with the radiating piece with its top end face compression fit, and described radiating piece is heronsbill aluminium section bar fin.
Heat insulating mattress is provided with between the top end face of described heronsbill aluminium section bar fin and the gusset piece of extruded type wire rod melting heat nozzle assembly.
The present invention adopts technique scheme, the pore of described heating tube has epimere and hypomere in the vertical direction, epimere is that the sleeve coaxially plugged for instlated tubular coordinates section, hypomere is molten room, the lower end of described instlated tubular is plugged in described sleeve and coordinates formation in section to plug together docking structure, the pore of described instlated tubular communicates with described molten room, because instlated tubular heat conductivility is poor, therefore the heat of the sleeve cooperation section of heating tube can not be directly passed to the wire rod in instlated tubular, the wire rod only entering the molten room of sleeve cooperation pars infrasegmentalis could by heating and melting, thus shorten the length of molten room, the inertia of melting wire rod entirety all reduces with the adhesive force of the molten chamber interior walls be subject to, therefore enter silk and move back a fast response time, print quality can be improved, and described axially extending bore has the hermetically-sealed construction be sealed and matched with the bottom end face of described heating tube and/or bottom outer peripheral face, melting wire rod can not overflow from both faying faces, the normal work of printer can be ensured.
Accompanying drawing explanation
Fig. 1 is the perspective view of extruded type wire rod melting heat nozzle assembly in prior art;
Fig. 2 is the internal structure schematic diagram of extruded type wire rod melting heat nozzle assembly in Fig. 1.
The name that in figure, each Reference numeral is corresponding is called: 90 gusset pieces, 91 wire rod perforation, 92 cold junction assemblies, 93 instlated tubulars, 94 heat sink copper pots, 95 hot junction assemblies, 96 heating tubes, 97 heaters, 98 hot mouths, 99 extrusions, 910 insulating supports, 911 seat boards, 912 bolts, 913 molten rooms.
Fig. 3 is the perspective view of an embodiment of extruded type wire rod melting heat nozzle assembly in the present invention;
Fig. 4 is the perspective view of another angle of extruded type wire rod melting heat nozzle assembly in Fig. 3;
Fig. 5 is the side view of Fig. 3;
Fig. 6 is A-A sectional view of Fig. 5.
The name that in figure, each Reference numeral is corresponding is called: 1 gusset piece, 2 wire rod perforation, 3 cold junction assemblies, 4 instlated tubulars, 5 heronsbill aluminium section bar fin, 6 heat insulating mattress, 7 hot junction assemblies, 8 metallic studs, 9 heat-conducting blocks, 10 heating element heaters, 11 hot mouths, 12 extrusions, 13 insulating supports, 14 seat boards, 15 bolts, 16 molten rooms.
Detailed description of the invention
In the present invention, an embodiment of extruded type wire rod melting heat nozzle assembly is as shown in Fig. 3 ~ Fig. 6, comprising the gusset piece 1 on the corresponding moving assembly for being fixed on printer, being assemblied in cold junction assembly 3 on gusset piece 1 and hot junction assembly 7.
Wherein gusset piece 1 is provided with the wire rod perforation 2 penetrated for wire rod, cold junction assembly 3 comprising instlated tubular 4 on the aperture, lower end being docked at wire rod perforation 2, being set in the outer heronsbill aluminium section bar fin 5 for dispelling the heat of instlated tubular 4, instlated tubular 4 adopts PTFE material to make, there is good resistance to elevated temperatures and heat-proof quality, heronsbill aluminium section bar fin 5 is radiating elements conventional in prior art, concrete structure repeats no more, and it is set on instlated tubular 4.For avoiding heat to conduct on gusset piece 1 too much, between the top end face of heronsbill aluminium section bar fin 5 and gusset piece 1, be provided with heat insulating mattress 6.
Hot junction assembly 7 comprises the metallic stud 8 being provided with axially extending bore, this metallic stud 8 is heating tube, and its outer surface is provided with external screw thread, and the lower end of metallic stud 8 is fixed with hot mouth 11 by external thread bolt connection, middle part is bolted and fixed with heat-conducting block 9, heat-conducting block 9 is inserted with heating element heater 10.The axially extending bore of metallic stud 8 is the shoulder hole that top diameter is greater than base diameter, be divided into epimere and hypomere, epimere diameter is larger, that the sleeve coaxially plugged for instlated tubular 4 coordinates section, hypomere diameter is less, for forming the molten room 16 of melting wire rod, epimere forms the counterbore with set depth at metallic stud 8 top end face, and this counterbore is that sleeve coordinates section.The lower end of instlated tubular 4 is inserted sleeve and to be coordinated in section and its pore communicates with molten room 16, its bottom end face and the bottom surface compression fit of counterbore and seal, bottom outer peripheral face that it is plugged in the sleeve section of cooperation passes through interference fit seal with the internal face of the sleeve section of cooperation.In addition, the internal diameter of instlated tubular 4 is greater than the diameter of shoulder hole base diameter smaller portions, can reduce the contact of wire rod and instlated tubular 4 inwall, avoids wire rod in instlated tubular 4 internal strain even melting, prevents into silk bad.The top of metallic stud 8 is threaded connection to be fixed with insulating supports 13, this insulating supports 13 adopts Peek material to make, there is good resistance to elevated temperatures and heat-proof quality equally, metallic stud 8 can be reduced to the heat conduction of upper end parts and can reduce the heat loss of metallic stud 8.The top end face of insulating supports 13 and the lower surface compression fit of heronsbill aluminium section bar fin 5, can outwards distribute heat, good heat dissipation effect in time.Be provided with seat board 14 below the flange of insulating supports 13, seat board 14 is connected by bolt 15 and connecting plate, realizes the fixing of cold junction assembly 3 and hot junction assembly 7.
During use, wire rod penetrates from the wire rod perforation 2 gusset piece 1, enter in hot mouth 11 through instlated tubular 4, heating tube, wire rod in molten room 16 is heated to molten condition, corresponding wire feeder promotes wire rod thermotropism mouth 11 and moves when needs discharging, the wire rod of molten condition in molten room 16 can be extruded from the extrusion 12 of hot mouth 11.Owing to adopting the above-mentioned structure be plugged in by instlated tubular 4 in metallic stud 8, decrease the length of molten room 16 on the one hand, the response speed that silk moves back silk is entered when improve printing, on the other hand, rely on the hermetically-sealed construction in bottom end face and the bottom outer peripheral face of instlated tubular 4 and shoulder hole, solve instlated tubular 4 and heating tube in prior art well and adopt the flash problem existed during docking structure, can ensure that printer normally works, improve reliability, reduce maintenance cost.
In the present invention, an embodiment of 3D printer comprising frame, having the printhead of extruded type wire rod melting heat nozzle assembly, for driving moving assembly, the drive unit and control device etc. of printhead movement on three coordinate directions, wherein the extruded type wire rod melting heat nozzle assembly of printhead is identical with the structure of above-mentioned extruded type wire rod melting heat nozzle assembly, other structures outside printhead are same as the prior art, repeat no more herein.
In the above-described embodiments, what heating tube adopted is metallic stud 8, the PTFE tube that instlated tubular 4 adopts, in other embodiments of the invention, heating tube and instlated tubular 4 all can replace to other forms, and such as heating tube outer surface adopts light face, and corresponding hot mouth 11, heat-conducting block 9 etc. can be fixed on heating tube by holding screw, and instlated tubular 4 also can adopt other materials to make, such as Peek material etc.In addition, in above-described embodiment, the axially extending bore of metallic stud 8 is the shoulder hole with annular table terrace, the bottom end face of heating tube and annular table terrace, the bottom outer peripheral face of heating tube is all sealed and matched with the internal face of the shoulder hole sleeve section of cooperation, in other embodiments, sleeve coordinates between section internal face and instlated tubular 4 outer peripheral face also can adopt matched in clearance, the bottom end face of instlated tubular 4 and the compression fit of annular table terrace is only relied on to realize sealing, and the axially extending bore of metallic stud 8 also can be arranged to the consistent form of internal diameter, shoulder hole sleeve is only relied on to coordinate the internal face of section and instlated tubular 4 to be sealed and matched, or the axially extending bore of metallic stud 8 is arranged to screwed hole, instlated tubular and screwed hole adopt threaded sealing fit.Moreover the internal diameter of instlated tubular 4 also can be less than or equal to the diameter bottom heating tube shoulder hole.
Claims (6)
1. extruded type wire rod melting heat nozzle assembly, comprise the heating tube for the formation of molten room that axis extends along the vertical direction, docking is arranged on the instlated tubular of heating tube upper end, it is characterized in that: the pore of described heating tube is the shoulder hole that top diameter is greater than base diameter, the pore of heating tube has epimere and hypomere in the vertical direction, epimere is that the sleeve coaxially plugged for instlated tubular coordinates section, hypomere is molten room, sleeve cooperation section is the top section of shoulder hole, the lower end of described instlated tubular is inserted described sleeve and is coordinated the degree of depth of one section of setting in section and formed and plug together docking structure, the internal diameter of instlated tubular is greater than the diameter of molten room, the pore of described instlated tubular communicates with described molten room, the pore of described heating tube has the hermetically-sealed construction be sealed and matched with the bottom end face of described heating tube and bottom outer peripheral face, hermetically-sealed construction comprises the internal face coordinating section in shoulder hole towards the annular table terrace at heating tube top and sleeve, instlated tubular bottom end face seals with the bottom surface compression fit of the sleeve section of cooperation, being plugged in sleeve coordinates the bottom outer peripheral face of section to pass through interference fit seal with the internal face of the sleeve section of cooperation.
2. extruded type wire rod melting heat nozzle assembly according to claim 1, it is characterized in that: the top of described heating tube is provided with the insulating supports for fixing heating tube, described insulating supports top is provided with the radiating piece with its top end face compression fit, and described radiating piece is heronsbill aluminium section bar fin.
3. extruded type wire rod melting heat nozzle assembly according to claim 2, is characterized in that: be provided with heat insulating mattress between the top end face of described heronsbill aluminium section bar fin and the gusset piece of extruded type wire rod melting heat nozzle assembly.
4.3D printer, comprise the printhead being provided with extruded type wire rod melting heat nozzle assembly, described extruded type wire rod melting heat nozzle assembly comprises the heating tube for the formation of molten room that axis extends along the vertical direction, docking is arranged on the instlated tubular of heating tube upper end, it is characterized in that: the pore of described heating tube is the shoulder hole that top diameter is greater than base diameter, the pore of heating tube has epimere and hypomere in the vertical direction, epimere is that the sleeve coaxially plugged for instlated tubular coordinates section, hypomere is molten room, sleeve cooperation section is the top section of shoulder hole, the lower end of described instlated tubular is inserted described sleeve and is coordinated the degree of depth of one section of setting in section and formed and plug together docking structure, the internal diameter of instlated tubular is greater than the diameter of molten room, the pore of described instlated tubular communicates with described molten room, the pore of described heating tube has the hermetically-sealed construction be sealed and matched with the bottom end face of described heating tube and bottom outer peripheral face, hermetically-sealed construction comprises the internal face coordinating section in shoulder hole towards the annular table terrace at heating tube top and sleeve, instlated tubular bottom end face seals with the bottom surface compression fit of the sleeve section of cooperation, being plugged in sleeve coordinates the bottom outer peripheral face of section to pass through interference fit seal with the internal face of the sleeve section of cooperation.
5. 3D printer according to claim 4, it is characterized in that: the top of described heating tube is provided with the insulating supports for fixing heating tube, described insulating supports top is provided with the radiating piece with its top end face compression fit, and described radiating piece is heronsbill aluminium section bar fin.
6. 3D printer according to claim 5, is characterized in that: be provided with heat insulating mattress between the top end face of described heronsbill aluminium section bar fin and the gusset piece of extruded type wire rod melting heat nozzle assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310448021.5A CN103507273B (en) | 2013-09-27 | 2013-09-27 | Extruded type wire rod melting heat nozzle assembly and use the 3D printer of this assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310448021.5A CN103507273B (en) | 2013-09-27 | 2013-09-27 | Extruded type wire rod melting heat nozzle assembly and use the 3D printer of this assembly |
Publications (2)
| Publication Number | Publication Date |
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| CN103507273A CN103507273A (en) | 2014-01-15 |
| CN103507273B true CN103507273B (en) | 2016-01-06 |
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| CN201310448021.5A Expired - Fee Related CN103507273B (en) | 2013-09-27 | 2013-09-27 | Extruded type wire rod melting heat nozzle assembly and use the 3D printer of this assembly |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103894614B (en) * | 2014-04-17 | 2017-02-01 | 机械科学研究总院先进制造技术研究中心 | Metal material melt extrusion device based on high-frequency induction heating |
| CN104149343B (en) * | 2014-07-29 | 2017-01-25 | 厦门达天电子科技有限公司 | Hot-melting material extruding device by use of flexible guide pipe |
| CN105252773B (en) * | 2015-11-19 | 2017-04-12 | 梁智明 | Hot end device of desktop-level FDM (frequency-division multiplexing) 3D printer |
| CN115027055B (en) * | 2022-06-11 | 2023-12-05 | 上海占瑞模具设备有限公司 | 3D prints hot mouth subassembly and hot runner system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201219196A (en) * | 2010-09-22 | 2012-05-16 | Stratasys Inc | Liquefier assembly for use in extrusion-based additive manufacturing systems |
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2013
- 2013-09-27 CN CN201310448021.5A patent/CN103507273B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201219196A (en) * | 2010-09-22 | 2012-05-16 | Stratasys Inc | Liquefier assembly for use in extrusion-based additive manufacturing systems |
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