CN107214958B - Double-caliber 3D printer nozzle - Google Patents
Double-caliber 3D printer nozzle Download PDFInfo
- Publication number
- CN107214958B CN107214958B CN201710625817.1A CN201710625817A CN107214958B CN 107214958 B CN107214958 B CN 107214958B CN 201710625817 A CN201710625817 A CN 201710625817A CN 107214958 B CN107214958 B CN 107214958B
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- drainage conduit
- extrusion
- extrusion outer
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- 239000000463 material Substances 0.000 claims abstract description 164
- 238000001125 extrusion Methods 0.000 claims abstract description 123
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 238000012856 packing Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 5
- 238000013519 translation Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 description 14
- 238000007639 printing Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 229920001206 natural gum Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The invention discloses a double-aperture 3D printer nozzle, which comprises an extrusion opening outer wall and a discharge pipe, wherein the extrusion opening outer wall is conical and is provided with an inner cavity coaxial with the extrusion opening outer wall, the discharge pipe can inject molten consumable materials into the inner cavity of the extrusion opening outer wall, the side wall of the lower end of the discharge pipe is circumferentially provided with a plurality of discharge holes, the adjacent discharge holes are uniformly distributed at intervals, the lower end of the discharge pipe is connected with a control mechanism, the control mechanism is accommodated in a cavity formed by an annular sealing block and the extrusion opening outer wall, the control mechanism comprises a material limiting block, the material limiting block is coaxially connected to the lower end of the discharge pipe and is in a coaxial double-truncated cone shape, the radius of the circular truncated cone from the top to the bottom of the material limiting block is gradually increased and then gradually reduced, the material limiting block is provided with a plurality of first guide holes and second guide holes, the first guide holes are arranged on the circular truncated cone at the upper part of the material limiting block, and the The holes are communicated.
Description
Technical field
The present invention relates to a kind of 3D printer extrusions, and in particular to a kind of dual-caliber, variable-flow formula 3D printer squeeze out
Mouthful.
Background technology
3D printer is a kind of cumulative manufacturing technology, i.e. a kind of machine of RP technique, it is a kind of mathematical model
Based on file, with adhesive materials such as special wax material, powdery metal or plastics, by printing jointing material from level to level
Three-dimensional object is manufactured, at this stage 3D printer forms and manufacture product by the way of successively printing.
3D printer extrusion is used to by storage cavity squeeze out jointing material to print job face, and existing printer squeezes out
The jointing material amount that mouth uses fixed bore more and squeezed out in the unit interval by extrusion has a disadvantage in that for definite value：Work as life
When producing to the required precision difference of printing, the bore of extrusion with extrusion capacity cannot respective change, i.e. required precision be higher therewith
When, fixed bore can not meet production required precision, and when required precision is relatively low, the extrusion capacity of fixed bore is smaller, printing effect
It is relatively low.
Invention content
To solve the deficiencies in the prior art, it is an object of the invention to provide a kind of tool there are two types of bore 3D printer extrusion simultaneously
And the switching of different bores need not interrupt the print procedure of printer, while the present invention is also with flux controllable function and can
According to the unit interval extrusion capacity for needing to adjust extrusion actually printed.
A kind of dual-caliber 3D printer nozzle, including extrusion outer wall, drainage conduit, extrusion outer wall is tapered and sets
The inner cavity with extrusion wall coaxial line is equipped with, drainage conduit can inject molten state consumptive material, drainage conduit to the inner cavity of extrusion outer wall
Bottom side of the wall is circumferentially arranged several relief holes and adjacent relief hole is in being evenly spaced on, and ring is provided with above relief hole
Shape sealing block and ring packing block and drainage conduit are coaxial, and ring packing block is matched with extrusion outer wall inner cavity top and sealed simultaneously
And ring packing block can be moved along the axis of extrusion outer wall, drainage conduit lower end is connected with control mechanism and control mechanism is stored
In the cavity that ring packing block and extrusion outer wall are formed, the control mechanism includes limit material block, limit material block it is coaxially connected in
The lower end of drainage conduit and limit material block in coaxial double round table-like, limit material block by top to bottom round platform radius first gradually increase again by
Round platform busbar that is decrescence small and limiting material block lower part is parallel with the busbar of extrusion outer wall, and several guides are provided on limit material block
Hole, the material guide hole include several first material guide holes, the second material guide hole, and the first material guide hole is set to the circle on limit material block top
Platform, the cavity that the first material guide hole can be formed by ring packing block and extrusion outer wall and the discharge for being set to drainage conduit lower end
Hole is connected, and the coaxial arrangement of the second material guide hole connects in the bottom of limit material block lower part round platform and the second material guide hole and the first material guide hole
Logical, the bottom of extrusion outer wall is provided with extrusion and extrusion is connected with the inner cavity of extrusion outer wall, extrusion and second
Material guide hole is coaxial and squeezes out that port radius is matched with limit material block lower part round platform radius and the diameter of the second material guide hole is less than extrusion
Diameter.
Above-mentioned technical proposal is further improved.
Guiding mechanism is provided in the middle part of drainage conduit, the leading end of guiding mechanism and the output terminal of driving mechanism connect and can
Driving drainage conduit is moved along own axes direction, and guiding mechanism can be used for guiding drainage conduit and draw limit material block along extrusion outer wall
Central axial direction move, it can be achieved that the adjustment of extrusion opening of external wall size.
Above-mentioned technical proposal is further improved.
The guiding mechanism includes being set to the shifting block of discharge wall portion, shifting block set along drainage conduit axisymmetrical and
The output end connection of radial distribution of the axis of shifting block along drainage conduit, shifting block and driving mechanism；The output end of driving mechanism
Shifting block can be pushed and draw drainage conduit and moved along own axes, can make limit material block lower part round platform with extrusion outer wall by matching status
It is converted to disengaged position or limit material block lower part round platform is made to be converted to matching status by disengaged position with extrusion outer wall.
Above-mentioned technical proposal is further improved.
The driving mechanism includes motor, bootstrap block, and the output shaft end connection bootstrap block of motor can simultaneously drive bootstrap block
Along being moved perpendicular to the direction of drainage conduit central axis, the shifting block that discharge wall portion is provided with and be installed on bootstrap block matches
Guide rail, shifting block can be pushed and draw drainage conduit moving in the translation motion of bootstrap block along center axis, drainage conduit is moved through
In journey driving be connected thereto limit material block along drainage conduit axis direction move and adjust limit material block and extrusion outer wall between
Gap.
Compared with prior art, the present invention the progress and advantage that obtain are a kind of dual-caliber of the present invention, variable-flow
Port radius is adjustable, squeezes out the adjustable function of flow with squeezing out for formula 3D printer extrusion；Bootstrap block is controlled to translate by motor
And along the first escape groove length direction and drainage conduit relative displacement, drainage conduit edge occur for bootstrap block in bootstrap block translation motion
Limit material block connected to it is driven to be moved to the direction far from extrusion outer wall in own axes motion process, limit material block is separate
During extrusion outer wall, the extrusion port radius that radius is become extrusion outer wall from the second guide pore radius is squeezed out, is realized crowded
Go out radius increase, the increased function of extrusion capacity.
Description of the drawings
In order to illustrate the embodiments of the present invention more clearly, attached drawing needed in the embodiment will be done simply below
It introduces, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the present invention, for ordinary skill people
For member, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 is first state diagrammatic cross-section of the present invention.
Fig. 3 is the second state diagrammatic cross-section of the invention.
Fig. 4 is material guide mechanism schematic diagram of the present invention.
Fig. 5 is driving mechanism schematic diagram of the present invention.
Fig. 6 is driving mechanism schematic diagram of the present invention.
Each label meaning is in figure：10. material guide mechanism, 11. extrusion outer walls, 12. drainage conduits, 13. ring packing blocks,
14. limit material block, 15. shifting blocks, 16. threaded connectors, 20. driving mechanisms, 21. motors, 22. bootstrap blocks, 30. heating arrangements, 40.
Bin stock mechanism.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Ground describes, it is clear that described embodiment is only part of the embodiment rather than whole embodiments of the present invention.Based on this hair
Embodiment in bright, those of ordinary skill in the art without making creative work, the every other reality obtained
Example is applied, belongs to the scope of the present invention.
Referring to attached drawing 1, a kind of dual-caliber of the invention, variable-flow formula 3D printer extrusion include material guide mechanism 10, drive
Motivation structure 20, heating arrangements 30, bin stock mechanism 40, bin stock mechanism 40 are provided with inner cavity and inner cavity and store to print workpiece
Consumptive material, the exhaust end of 40 bottom of bin stock mechanism connect with the feed end on 10 top of material guide mechanism, and the material guide mechanism 10 is used
In squeezing consumptive material by bin stock mechanism 40 to the print job face below 10 exhaust end of material guide mechanism, in material guide mechanism 10
Portion's setting is provided with the heating arrangements 30 of heat source needed for consumptive material melting, and material guide mechanism 10 further includes control mechanism, guiding mechanism, institute
It states control mechanism and is installed on the bottom of material guide mechanism 10 and extrusion bore, extrusion flow available for control consumptive material, it is described
Guiding mechanism is set to the middle part of material guide mechanism 10, and the leading end of guiding mechanism connect and leads to the output terminal of driving mechanism 20
The output terminal of mechanism of overdriving 20 can drive the leading end of guiding mechanism to be subjected to displacement on guide direction.
More perfect, the consumptive material can be in bond plastic, photosensitive natural gum, metal powder, ceramics, edible oil and fat
It is any one or more.
More preferably, referring to attached drawing 2-4, the material guide mechanism 10 includes extrusion outer wall 11, drainage conduit 12, outside extrusion
Wall 11 is tapered and is provided with inner cavity with 11 coaxial line of extrusion outer wall, drainage conduit 12 and the discharge of 40 bottom of bin stock mechanism
End connection, 12 bottom side of the wall of drainage conduit is circumferentially arranged several relief holes and adjacent relief hole is in being evenly spaced on, and arranges
Ring packing block 13 is provided with above material hole and ring packing block 13 and drainage conduit 12 are coaxial, ring packing block 13 and extrusion
11 inner cavity top of outer wall matches and seals and ring packing block 13 can be moved along the axis of extrusion outer wall 11, under drainage conduit 12
End is connected with control mechanism and control mechanism is accommodated in the cavity that ring packing block 13 is formed with extrusion outer wall 11, described
Control mechanism includes limit material block 14, and limit material block 14 is coaxially connected in the lower end of drainage conduit 12 and to limit material block 14 in coaxial double round platforms
Shape, by top to bottom round platform radius, first gradually increase is gradually reduced and limits the round platform busbar of 14 lower part of material block limit material block 14 again
It is parallel with the busbar of extrusion outer wall 11, several material guide holes are provided on limit material block 14, the material guide hole includes several first
Material guide hole, the second material guide hole, the first material guide hole are set to the round platform on 14 top of limit material block, and the first material guide hole can pass through ring packing
Block 13 matches with the cavity that extrusion outer wall 11 is formed with being set to the relief hole of 12 lower end of drainage conduit, and the second material guide hole is same
Axis is set to the bottom of limit material 14 lower part round platform of block and the second material guide hole is connected with the first material guide hole, the bottom of extrusion outer wall 11
Portion is provided with extrusion and extrusion is connected with the inner cavity of extrusion outer wall 11, and extrusion is coaxial with the second material guide hole and squeezes
Exit radius match with limit material 14 lower part round platform radius of block and the diameter of the second material guide hole is less than extrusion diameter, in drainage conduit 12
Portion is provided with guiding mechanism, and the leading end of guiding mechanism connect with the output terminal of driving mechanism 20 and can drive 12 edge of drainage conduit
Own axes direction moves, and guiding mechanism can be used for guiding drainage conduit 12 and draw center of the limit material block 14 along extrusion outer wall 11
Axis direction is moved, it can be achieved that the adjustment of 11 opening size of extrusion outer wall.
More preferably, adjacent first material guide hole in be evenly spaced on and the axis of the first material guide hole perpendicular to limit expect block 14
The side of upper round platform.
More specifically, the guiding mechanism includes being set to the shifting block 15 of 12 wall portion of drainage conduit, and shifting block 15 is along discharge
12 axisymmetrical of pipe is set and radial distribution of the axis of shifting block 15 along drainage conduit 12, shifting block 15 and the output of driving mechanism 20
End connects；Drainage conduit 12 along own axes move when, 14 lower part round platform of limit material block and extrusion outer wall 11 can be made by matching shape
State is converted to disengaged position or 14 lower part round platform of limit material block is made to be converted to matching status by disengaged position with extrusion outer wall 11.
More preferably, the driving mechanism 20 includes motor 21, bootstrap block 22, and being respectively arranged with first on bootstrap block 22 keeps away
Slot, the second escape groove and the first escape groove, the second escape groove depth direction center line is allowed to be respectively perpendicular the big face of bootstrap block 22,
The length direction center line of first escape groove is vertical with the axis of drainage conduit 12 and the length direction center line of the first escape groove
With the second escape groove length direction centerline collineation/parallel, the first escape groove passes through for drainage conduit 12 and bootstrap block 22 can
Moved along the first escape groove length direction, the first escape groove both sides be provided with guide rail and guide rail depth direction central axis in
12 axis of drainage conduit, guide rail is inclined to set and matches with shifting block 15, and bootstrap block 22 is moved along the first escape groove length direction
When dynamic, guide rail can push shifting block 15 and draw drainage conduit 12 and be moved along its axis direction, output shaft and the bootstrap block 22 of motor 21
It connects and motor can provide rotation power drive bootstrap block 22 and translate and the translation direction vertical guide rail depth direction of bootstrap block 22
Center line.
It is more perfect, it is socketed on drainage conduit 12 outside heating arrangements 30 and the consumptive material in drainage conduit 12 can be added
Heat, the heating arrangements 30 include housing, and housing, which is provided with, can store in drainage conduit 12, the inner cavity of bootstrap block 22 and housing
Chamber is provided with heat source along 22 axis direction of drainage conduit.
More preferably, the bin stock mechanism 40 includes that the material-storing chamber of consumptive material can be stored, if material-storing chamber wall coaxial is provided with
Dry annular fin and adjacent annular cooling fin are in be evenly spaced on；Using the layout type can to consumptive material in material-storing chamber into
Row heat dissipation prevents consumptive material in material-storing chamber by the heat transfer of drainage conduit 12 and causes temperature is excessively high to cause damaging for consumptive material in material-storing chamber
Bad, softening.
During work, under the first working condition, shifting block 15 is located at guide rail close to one end of the second escape groove, this time limit material block 14
Between lower part round platform and extrusion outer wall 11 have for consumptive material by gap and extrusion discharge radius be extrusion
Radius, the consumptive material that heating arrangements 30 work and heat source transports drainage conduit 12 heat, and the consumptive material after heating is by drainage conduit
12 bottom discharging holes are expelled to the cavity that ring packing block 13 is formed with extrusion outer wall 11 and 14 top round platform of limit material block, empty
The consumptive material of intracavitary respectively by extrusion outer wall 11 and limit material 14 lower part round platform of block between gap, limit material block 14 material guide hole squeeze
It is depressed into extrusion and is squeezed out by extrusion to print job face.
Under second working condition, when printing precision, which needs raising, consumptive material to squeeze out radius, to be needed to reduce, motor 21 works,
The output shaft of motor 21 drive bootstrap block 22 along the first escape groove length direction center line to being moved close to 21 direction of motor and
Second escape groove extends for output shaft along the second escape groove axis to close to first escape groove one end, and bootstrap block 22 is kept away along first
It allows in the motion process of slot length direction and relative displacement occurs with drainage conduit 12, the guide rail for being set to bootstrap block 22 applies shifting block 15
The active force of the vertical guide rail length direction and active force is directed toward extrusion outer wall 11 by shifting block 15, shifting block 15 is in the work of guide rail
It is moved under firmly along 12 axis of drainage conduit to 11 direction of extrusion outer wall, discharge connected to it is driven in 15 motion process of shifting block
Pipe 12 is along own axes to being moved close to extrusion direction and limit material block 14 being driven to be moved to extrusion direction, when limit expects block 14
When moving at extrusion, the lower part round platform of limit material block 14 is matched with the sealing of the side of extrusion outer wall 11 and lower part round platform bottom
Face is generally aligned in the same plane with extrusion, and the extrusion radius of extrusion, which is limited, at this time expects the second material guide hole half of 14 lower part round platform of block
Diameter, squeezing out port radius reduction causes under uniform pressure state, and the extrusion capacity of consumptive material reduces, and consumptive material is by bin stock mechanism 40 through drainage conduit
The cavity that 12 transports are formed to ring packing block 13 and extrusion outer wall 11 and 14 top round platform of limit material block, consumptive material enter cavity
It is squeezed out to print job face by the material guide hole of limit material block 14 and is cooled and shaped on print job face afterwards.
More perfect, extrusion outer wall 11 is connected through a screw thread part 16 and is connect, and screw thread with 30 housing of heating arrangements
Connector 16 is coaxially socketed on drainage conduit 12, and heating arrangements 30 are provided with mounting hole and mounting hole and drainage conduit 12 are coaxial, spiral shell
Line connector 16 includes the installation of upper threaded connector, lower threaded connector and upper threaded connector and 30 housing of heating arrangements
Hole matching, lower threaded connector are matched with extrusion outer wall 11 far from extrusion one end；The upper spiral shell being socketed on outside drainage conduit 12
Line connector can play firm effect to drainage conduit 12, and avoid the bounce of the generation radial direction of drainage conduit 12, by being threaded
Connector 16 fixes extrusion outer wall 11 and heating arrangements 30 and drainage conduit 12 is made in its circumferential degree of freedom to be zero, when leading
Rail drive shifting block 15 to 22 bottom of bootstrap block move when, be connected through a screw thread part 16 to drainage conduit 12 circumferential direction carry out freedom
The restriction of degree ensure that and is only circumferentially subjected to displacement along itself, and then limit the lower part of material block 14 when drainage conduit 12 is driven by shifting block 15
Round platform can be matched with the conical surface of extrusion outer wall, it is ensured that the stable operation of equipment.
The Method of printing of a kind of dual-caliber, variable-flow formula 3D printer, step include：
S1. limit material block 14 is in 11 inner wall of extrusion outer wall matches sealing state and squeezes out radius as the second material guide hole
Radius powers on, and the consumptive material in drainage conduit 12 is heated to molten state, the consumption of molten state by the heat source in heating arrangements 30
Flows from axis of the material from the discharge of bin stock mechanism 40 exhaust end along drainage conduit 12 to drainage conduit 12 and by 12 lower end of drainage conduit
The relief hole in portion is discharged into the cavity that extrusion outer wall 11, ring packing block 13 and limit material block 14 are formed；
S2. in the lower end of drainage conduit and limit material block in coaxial double round table-like since limit material block is coaxially connected, limit material block by
First gradually increase is gradually reduced and limits the round platform busbar of material block lower part and extrusion outer wall top to bottom round platform radius again
Busbar is parallel, and several material guide holes are provided on limit material block, and the material guide hole includes several first material guide holes, the second material guide hole,
First material guide hole is set to the round platform on limit material block top, what the first material guide hole can be formed by ring packing block and extrusion outer wall
Cavity is connected with being set to the relief hole of drainage conduit lower end, and the coaxial arrangement of the second material guide hole is in the bottom of limit material block lower part round platform
Portion and the second material guide hole is connected with the first material guide hole；So that positioned at extrusion outer wall 11, ring packing block 13 and limit material block
Molten state consumptive material in 14 formation cavitys squeezes out extrusion outer wall 11 by the second material guide hole；
S3. when printing precision, which requires to reduce, or squeezes out radius needs increase, motor 21 works, the output shaft of motor 21
Bootstrap block 22 connected to it is driven to be moved along the central axial direction perpendicular to drainage conduit 12, is provided with and pacifies on bootstrap block 22
The guide rail that shifting block 15 loaded on 12 wall portion of drainage conduit matches can push shifting block 15 and the row of traction in the translation motion of bootstrap block 22
Expects pipe 12 is moved upwards along center axis, and driving, which is connected thereto, in 12 motion process of drainage conduit limits material block 14 along drainage conduit 12
Axis moves to the direction far from extrusion outer wall 11 and makes to generate gap between limit material block 14 and extrusion outer wall 11, squeezes out half
Diameter is the extrusion port radius of extrusion outer wall 11；Sky is formed positioned at extrusion outer wall 11, ring packing block 13 and limit material block 14
The molten state consumptive material of intracavitary respectively by limit expect gap between block 14 and extrusion outer wall 11, limit material block 14 the second material guide hole
It squeezes to extrusion and is squeezed by extrusion to print job face.
More preferably, in above-mentioned steps S1, the annular fin of bin stock cavity outer wall can radiate to consumptive material in material-storing chamber,
Consumptive material in material-storing chamber is prevented by the heat transfer of drainage conduit 12 and causes temperature is excessively high to cause the damaging of consumptive material in material-storing chamber, soften.
It is more perfect, in above-mentioned steps S3, when guide rail driving shifting block 15 moves and the row of driving to 22 bottom of bootstrap block
Expects pipe 12 to extrusion outer wall 11 move when, connect since extrusion outer wall is connected through a screw thread part with heating arrangements housing, and
And threaded connector is coaxially socketed on drainage conduit, threaded connector includes upper threaded connector, lower threaded connector and upper spiral shell
Line connector is matched with the mounting hole of heating arrangements housing, lower threaded connector and extrusion outer wall are far from extrusion one end
Match；Threaded connector 16 plays firm effect to drainage conduit 12, and avoids the bounce of the generation radial direction of drainage conduit 12；Pass through screw thread
Connector 16 carries out drainage conduit 12 in circumferential direction the restriction of degree of freedom, ensure that edge when drainage conduit 12 is driven by shifting block 15
Itself is circumferentially subjected to displacement.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention；
A variety of modifications of these embodiments will be apparent for those skilled in the art, defined in the present invention
General Principle can not depart from the present invention spirit or scope in the case of, realize in other embodiments.Therefore, originally
Invention will not be defined to the embodiments shown herein, and be to fit to and the principles and novel features disclosed herein
Consistent most wide range.
Claims (1)
1. a kind of dual-caliber 3D printer nozzle, which is characterized in that it includes extrusion outer wall, drainage conduit, and extrusion outer wall is in
Taper and inner cavity with extrusion wall coaxial line is provided with, drainage conduit can inject molten state consumption to the inner cavity of extrusion outer wall
Material, drainage conduit bottom side of the wall is circumferentially arranged several relief holes and adjacent relief hole is in being evenly spaced on, on relief hole
Side is provided with ring packing block and ring packing block and drainage conduit are coaxial, ring packing block and extrusion outer wall inner cavity top
Match and seal and ring packing block can be moved along the axis of extrusion outer wall, drainage conduit lower end is connected with control mechanism and controls
Mechanism processed is accommodated in the cavity that ring packing block is formed with extrusion outer wall, and the control mechanism includes limit material block, limit material block
It is coaxially connected in the lower end of drainage conduit and to limit material block in coaxial double round table-like, limit material block by top to bottom round platform radius first by
The cumulative big round platform busbar for being gradually reduced again and limiting material block lower part is parallel with the busbar of extrusion outer wall, is provided on limit material block
Several material guide holes, the material guide hole include several first material guide holes, the second material guide hole, and the first material guide hole is set on limit material block
The round platform in portion, the cavity and be set to drainage conduit lower end that the first material guide hole can be formed by ring packing block and extrusion outer wall
Relief hole be connected, the coaxial arrangement of the second material guide hole is led in the bottom of limit material block lower part round platform and the second material guide hole with first
Expect hole connection, the bottom of extrusion outer wall is provided with extrusion and extrusion is connected with the inner cavity of extrusion outer wall, extrusion
It is coaxial with the second material guide hole and squeeze out that port radius is matched with limit material block lower part round platform radius and the diameter of the second material guide hole is less than
Extrusion diameter；
Guiding mechanism is provided in the middle part of drainage conduit, the leading end of guiding mechanism and the output terminal of driving mechanism are connected and can be driven
Drainage conduit is moved along own axes direction, and guiding mechanism can be used for guiding drainage conduit and draw limit material block along extrusion outer wall
Heart axis direction is moved, it can be achieved that the adjustment of extrusion opening of external wall size；
The guiding mechanism includes being set to the shifting block of discharge wall portion, and shifting block is set along drainage conduit axisymmetrical and shifting block
Radial distribution of the axis along drainage conduit, the output end of shifting block and driving mechanism connects；The output end of driving mechanism can push away
It moves shifting block and draws drainage conduit and moved along own axes, limit material block lower part round platform can be made to be converted with extrusion outer wall by matching status
For disengaged position or limit material block lower part round platform is made to be converted to matching status by disengaged position with extrusion outer wall；
The driving mechanism includes motor, bootstrap block, and the output shaft end connection bootstrap block of motor can simultaneously drive bootstrap block edge to hang down
Directly led in what the shifting block for being provided with and being installed on discharge wall portion in the direction of drainage conduit central axis movement, bootstrap block matched
Rail can push shifting block and draw drainage conduit moving in the translation motion of bootstrap block along center axis, in drainage conduit motion process
The axis direction that driving is connected thereto limit material block along drainage conduit moves and adjusts the gap between limit material block and extrusion outer wall.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625817.1A CN107214958B (en) | 2017-07-27 | 2017-07-27 | Double-caliber 3D printer nozzle |
| PCT/CN2018/094272 WO2019019882A1 (en) | 2017-07-27 | 2018-07-03 | Double-aperture 3d printer nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625817.1A CN107214958B (en) | 2017-07-27 | 2017-07-27 | Double-caliber 3D printer nozzle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107214958A CN107214958A (en) | 2017-09-29 |
| CN107214958B true CN107214958B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710625817.1A Active CN107214958B (en) | 2017-07-27 | 2017-07-27 | Double-caliber 3D printer nozzle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107214958B (en) |
| WO (1) | WO2019019882A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107214958B (en) * | 2017-07-27 | 2018-06-26 | 苏艳敏 | Double-caliber 3D printer nozzle |
| CN109397687B (en) * | 2018-11-27 | 2020-12-01 | 安徽工程大学 | Bore adjustable 3D print pen |
| CN110181810B (en) * | 2019-07-03 | 2024-07-30 | 常州工业职业技术学院 | Controllable flow's 3D prints graphite alkene combined material shower nozzle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104441657B (en) * | 2014-11-12 | 2016-08-17 | 广东工业大学 | The 3D printer head of a kind of controlled bore and control method thereof |
| US10537966B2 (en) * | 2015-03-04 | 2020-01-21 | Technology Research Association For Future Additive Manufacturing | Processing nozzle, processing head, machining apparatus, and control method and control program of processing nozzle |
| CN106032063B (en) * | 2015-03-16 | 2019-02-01 | 中国科学院西安光学精密机械研究所 | Powder spraying type 3D printing sprayer and control method thereof |
| WO2016151713A1 (en) * | 2015-03-20 | 2016-09-29 | 技術研究組合次世代３Ｄ積層造形技術総合開発機構 | Working nozzle, working head, working device, method for controlling working nozzle, and control program |
| CN204585850U (en) * | 2015-04-08 | 2015-08-26 | 广州建锦道自动控制科技有限公司 | A kind of device changing 3D printing needle diameter |
| US9821502B2 (en) * | 2015-09-11 | 2017-11-21 | Ut-Battelle, Llc | Multi-orifice deposition nozzle for additive manufacturing |
| KR101734862B1 (en) * | 2015-12-17 | 2017-05-12 | 한국산업기술대학교 산학협력단 | Printer head having a variable nozzle |
| WO2017106978A1 (en) * | 2015-12-21 | 2017-06-29 | Hagenbuch Patrick | Nozzle assembly |
| JP6669873B2 (en) * | 2015-12-30 | 2020-03-18 | レボテック カンパニー，リミティド | Bioprinter spray head assembly and bioprinter |
| CN108556351A (en) * | 2017-07-27 | 2018-09-21 | 张玲玲 | The photosensitive natural gum accumulation adjustable stereo shaping printer of precision |
| CN108688140A (en) * | 2017-07-27 | 2018-10-23 | 张玲玲 | Stereoforming method for the accumulation of ceramic accuracy |
| CN107214958B (en) * | 2017-07-27 | 2018-06-26 | 苏艳敏 | Double-caliber 3D printer nozzle |
-
2017
- 2017-07-27 CN CN201710625817.1A patent/CN107214958B/en active Active
-
2018
- 2018-07-03 WO PCT/CN2018/094272 patent/WO2019019882A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN107214958A (en) | 2017-09-29 |
| WO2019019882A1 (en) | 2019-01-31 |
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