CN107160689B - Metal powder increases the variable-flow formula stereo shaping printer of material accumulation - Google Patents
Metal powder increases the variable-flow formula stereo shaping printer of material accumulation Download PDFInfo
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- CN107160689B CN107160689B CN201710626528.3A CN201710626528A CN107160689B CN 107160689 B CN107160689 B CN 107160689B CN 201710626528 A CN201710626528 A CN 201710626528A CN 107160689 B CN107160689 B CN 107160689B
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- Prior art keywords
- block
- material guide
- extrusion
- wall
- drainage conduit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/295—Heating elements
-
- 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)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The variable-flow formula stereo shaping printer for increasing material accumulation the invention discloses metal powder includes material guide mechanism,Driving mechanism,Heating mechanism,Bin stock mechanism,Bin stock mechanism is provided with inner cavity and inner cavity stores the consumptive material for printing workpiece,The exhaust end of bin stock actuator base is connect with the feed end on material guide mechanism top,The material guide mechanism by bin stock mechanism for being squeezed consumptive material to the print job face below material guide mechanism exhaust end,The middle part setting of material guide mechanism is provided with the heating mechanism of heat source needed for consumptive material melting,Material guide mechanism further includes control mechanism,Guiding mechanism,The control mechanism is installed on the bottom of material guide mechanism and can be used for controlling the extrusion bore of consumptive material,Squeeze out flow,The guiding mechanism is set to the middle part of material guide mechanism,The leading end of guiding mechanism and the output end of driving mechanism connect and the leading end of guiding mechanism can be driven to be subjected to displacement on guide direction by the output end of driving mechanism.
Description
Technical field
The present invention relates to a kind of 3D printer extrusions, and in particular to metal powder increase material accumulation variable-flow formula solid at
Type printer.
Background technology
3D printer is a kind of cumulative manufacturing technology, i.e. a kind of machine of rapid prototyping technology, 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 constitutes by the way of successively printing and manufacture product.
3D printer extrusion is used to by storage cavity squeeze out jointing material to print job face, and existing printer squeezes out
It is definite value that mouth, which mostly uses fixed bore and the unit interval interior jointing material amount squeezed out by extrusion, is had a disadvantage in that：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 is unable to 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 print procedure of the switching of different bores without interrupting printer, while the present invention also has flux controllable function and can
According to the unit interval extrusion capacity for needing to adjust extrusion actually printed.
Metal powder increases the variable-flow formula stereo shaping printer of material accumulation comprising material guide mechanism, driving mechanism, heating
Mechanism, bin stock mechanism, bin stock mechanism is provided with inner cavity and inner cavity stores the consumptive material for printing workpiece, bin stock actuator base
Exhaust end connect with the feed end on material guide mechanism top, the material guide mechanism by bin stock mechanism for being squeezed consumptive material to position
The middle part setting in the print job face below material guide mechanism exhaust end, material guide mechanism is provided with adding for heat source needed for consumptive material melting
Heat engine structure, material guide mechanism further include control mechanism, guiding mechanism, and the control mechanism is installed on the bottom of material guide mechanism and can
For controlling the extrusion bore of consumptive material, squeezing out flow, the guiding mechanism is set to the middle part of material guide mechanism, guiding mechanism
Leading end and the output end of driving mechanism connect and the leading end of guiding mechanism can be driven to exist by the output end of driving mechanism
Guide is subjected to displacement on direction.
Above-mentioned technical proposal is further improved.
The material guide mechanism includes extrusion outer wall, drainage conduit, and extrusion outer wall is tapered and is provided with and squeezes out
The inner cavity of mouth wall coaxial line, drainage conduit are connected to the exhaust end of bin stock actuator base, and drainage conduit bottom side of the wall is circumferentially arranged
There are several relief holes and adjacent relief hole is in being evenly spaced on, ring packing block is provided with above relief hole and annular is close
It is coaxial to seal block and drainage conduit, ring packing block is matched with extrusion outer wall inner cavity top and sealed and ring packing block can be along crowded
The axis movement of outer wall is exported, drainage conduit lower end is connected with control mechanism and control mechanism is accommodated in ring packing block and squeezes out
The cavity that mouth outer wall is formed, the control mechanism include limit material block, and it is coaxially connected in the lower end of drainage conduit and limit to limit material block
Expect that block is round table-like in coaxial pair, first gradually increase is gradually reduced and limits under material block limit material block again by top to bottom round platform radius
The round platform busbar in portion is parallel with the busbar of extrusion outer wall, is provided with several material guide holes on limit material block, the material guide hole includes
Several first material guide holes, the second material guide hole, the first material guide hole are set to the round platform on limit material block top, and the first material guide hole can pass through ring
The cavity that shape sealing block is formed with extrusion outer wall is connected with the relief hole for being set to drainage conduit lower end, and the second material guide hole is same
Axis is set to the bottom of limit material block lower part round platform and the second material guide hole is connected to the first material guide hole, and the bottom of extrusion outer wall is set
It is equipped with extrusion and extrusion is connected to the inner cavity of extrusion outer wall, extrusion is coaxial with the second material guide hole and extrusion half
Diameter 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, is provided with and draws in the middle part of drainage conduit
Mechanism is led, the leading end of guiding mechanism and the output end of driving mechanism connect and drainage conduit can be driven to be transported along own axes direction
It is dynamic, guiding mechanism can be used for guiding drainage conduit and draw limit material block moved along the central axial direction of extrusion outer wall, 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 along drainage conduit axisymmetrical be arranged and
The axis of shifting block is along the radial distribution of drainage conduit, the output end connection of 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
Disengaged position is converted to, 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 simultaneously can 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 the axis direction of drainage conduit move and adjust limit material block and extrusion outer wall between
Gap.
Above-mentioned technical proposal is further improved.
The first escape groove passed through for drainage conduit, and the first escape groove depth direction center are further opened on bootstrap block
The length direction center line in the big face of line vertical guide block, the first escape groove is vertical with the axis of drainage conduit, the first escape groove two
Side is provided with guide rail and guide rail depth direction central axis is in drainage conduit axis, guide rail be inclined to set and with shifting block phase
Match, and when bootstrap block is moved along the first escape groove length direction, guide rail can push shifting block and draw drainage conduit along its axis direction
Movement, the output shaft of motor is connect with bootstrap block and motor can provide the translation of rotation power drive bootstrap block and the translation of bootstrap block
Direction vertical guide rail depth direction center line.
Above-mentioned technical proposal is further improved.
The second escape groove is further opened on bootstrap block, the second escape groove depth direction center line is respectively perpendicular the big of bootstrap block
Face, the length direction center line of the first escape groove and the second escape groove length direction centerline collineation/parallel, it is defeated to be connected to motor
The lead screw of shaft and coaxial line extends in the second escape groove, and the central axial direction of lead screw and the second escape groove
Length direction it is parallel, lead screw and be set to bootstrap block screw coordinate, lead screw receive motor provide rotary force simultaneously will rotation
Power is transferred to bootstrap block, and bootstrap block is pushed to be moved along the axis direction perpendicular to drainage conduit.
Above-mentioned technical proposal is further improved.
It is socketed on drainage conduit outside heating mechanism and the consumptive material in drainage conduit can be heated, the heating mechanism packet
Include shell, shell is provided with and can store drainage conduit, the inner cavity of bootstrap block and housing cavity and be provided with along discharge tube axis direction
Heat source.
Compared with prior art, the present invention the progress and advantage that obtain are that the metal powder of the present invention increases material accumulation
Port radius is adjustable, squeezes out the adjustable function of flow with squeezing out for variable-flow formula stereo shaping printer；It is controlled and is guided by motor
Block translates and along the first escape groove length direction and drainage conduit relative displacement, row occur for bootstrap block in bootstrap block translation motion
Expects pipe drives limit material block connected to it to be moved to the direction far from extrusion outer wall along own axes motion process, limit material block
During far from extrusion outer wall, squeezing out radius is become the extrusion port radius of extrusion outer wall from the second guide pore radius, real
The increase of extrusion radius, the increased function of extrusion capacity are showed.
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, drawings in the following description are only some embodiments of the invention, for ordinary skill people
For member, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is overall structure 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 mechanisms, 40.
Bin stock mechanism.
Specific implementation mode
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.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, the scope of the present invention is belonged to.
Referring to attached drawing 1, the variable-flow formula stereo shaping printer that metal powder of the invention increases material accumulation includes material guiding machine
Structure 10, driving mechanism 20, heating mechanism 30, bin stock mechanism 40, bin stock mechanism 40 are provided with inner cavity and inner cavity and store and be used for
The consumptive material of workpiece is printed, the exhaust end of 40 bottom of bin stock mechanism is connect with the feed end on 10 top of material guide mechanism, the guide
Mechanism 10 is used to by bin stock mechanism 40 squeeze consumptive material to the print job face being located at below 10 exhaust end of material guide mechanism, material guiding machine
The middle part setting of structure 10 is provided with the heating mechanism 30 of heat source needed for consumptive material melting, and material guide mechanism 10 further includes control mechanism, draws
Mechanism is led, the control mechanism is installed on the bottom of material guide mechanism 10 and can be used for controlling extrusion bore, the extrudate flow of consumptive material
Amount, the guiding mechanism are set to the middle part of material guide mechanism 10, the output end of the leading end and driving mechanism 20 of guiding mechanism
It connects and the leading end of guiding mechanism can be driven to be subjected to displacement on guide direction by the output end of driving mechanism 20.
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, the discharge of drainage conduit 12 and 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
It is provided with ring packing block 13 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, limit material block 14 are first gradually increased the round platform busbar for being gradually reduced and limiting 14 lower part of material block again by top to bottom round platform radius
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
The cavity that block 13 is formed with extrusion outer wall 11 matches with the relief hole for being set to 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 to the first material guide hole, the bottom of extrusion outer wall 11
Portion is provided with extrusion and extrusion is connected to 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 end 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 limit material block 14 along the center of extrusion outer wall 11
Axis direction moves the adjustment, it can be achieved that 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 arranged and the axis of shifting block 15 is along the radial distribution of drainage conduit 12, the output of shifting block 15 and driving mechanism 20
End connects；When drainage conduit 12 is moved along own axes, 14 lower part round platform of limit material block can be made with extrusion outer wall 11 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 the translation direction vertical guide rail depth direction for rotating 22 translation of power drive bootstrap block and bootstrap block 22
Center line.
It is more perfect, it is socketed on drainage conduit 12 outside heating mechanism 30 and the consumptive material in drainage conduit 12 can be added
Heat, the heating mechanism 30 include shell, and shell, which is provided with, can store in drainage conduit 12, the inner cavity of bootstrap block 22 and shell
Chamber is provided with heat source along 22 axis direction of drainage conduit.
More preferably, the bin stock mechanism 40 includes that can store the material-storing chamber of consumptive material, 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.
When 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 expects block 14
Between lower part round platform and extrusion outer wall 11 have for consumptive material by gap and extrusion discharge radius be extrusion
The consumptive material that radius, the work of heating mechanism 30 and heat source transport drainage conduit 12 heats, 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 is squeezed by the material guide hole in gap, limit material block 14 between extrusion outer wall 11 and limit material 14 lower part round platform of block respectively
It is depressed into extrusion and is squeezed out to print job face by extrusion.
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 driving bootstrap block 22 of motor 21 along the first escape groove length direction center line to moving close to 21 direction of motor and
Second escape groove extends along the second escape groove axis to close to first escape groove one end for output shaft, 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 vertical guide rail length direction and the active force are directed toward extrusion outer wall 11, work of the shifting block 15 in guide rail by shifting block 15
It is moved to 11 direction of extrusion outer wall along 12 axis of drainage conduit under firmly, discharge connected to it is driven in 15 motion process of shifting block
Pipe 12, to being moved close to extrusion direction and limit material block 14 being driven to be moved to extrusion direction, expects block 14 along own axes when limiting
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 with 30 shell of heating mechanism, and screw thread
Connector 16 is coaxially socketed on drainage conduit 12, and heating mechanism 30 is 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 shell of heating mechanism
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 drainage conduit 12 is avoided to generate radial bounce, by being threaded
Connector 16 makes extrusion outer wall 11 and heating mechanism 30 fix and drainage conduit 12 is made in its circumferential degree of freedom to be zero, when leading
When rail driving shifting block 15 is moved to 22 bottom of bootstrap block, it is connected through a screw thread part 16 and drainage conduit 12 is carried out freely in circumferential direction
The restriction of degree ensure that and be only circumferentially subjected to displacement along itself when drainage conduit 12 is driven by shifting block 15, and then limits the lower part of material block 14
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 mechanism 30
The axis along drainage conduit 12 is discharged to the flows of drainage conduit 12 and by 12 lower end of drainage conduit from 40 exhaust end of bin stock mechanism in material
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
Top to bottom round platform radius first gradually increases the round platform busbar and extrusion outer wall for being gradually reduced and limiting material block lower part 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 the relief hole for being set to 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 to 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 requires to reduce or extrusion radius needs to increase, motor 21 works, the output shaft of motor 21
It drives bootstrap block 22 connected to it 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 and makes to generate between limit material block 14 and extrusion outer wall 11 gap to the direction far from 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 passes through second material guide hole in gap, limit material block 14 between limit material block 14 and extrusion outer wall 11 respectively
It squeezes to extrusion and is squeezed to print job face by extrusion.
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
When expects pipe 12 is moved to extrusion outer wall 11, it is connect with heating mechanism shell since extrusion outer wall is connected through a screw thread part, 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 mechanism shell, 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 drainage conduit 12 is avoided to generate radial bounce；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 those skilled in the art to implement or use the present invention；
Various modifications to these embodiments will be apparent to 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 widest range.
Claims (2)
1. metal powder increases the variable-flow formula stereo shaping printer of material accumulation, which is characterized in that it includes material guide mechanism, driving
Mechanism, heating mechanism, bin stock mechanism, bin stock mechanism is provided with inner cavity and inner cavity stores the consumptive material for printing workpiece, storage
The exhaust end of material actuator base is connect with the feed end on material guide mechanism top, and the material guide mechanism is used for consumptive material by material storage machine
Structure is squeezed to the print job face below material guide mechanism exhaust end, and the middle part setting of material guide mechanism is provided with consumptive material melting institute
It further includes control mechanism, guiding mechanism to need the heating mechanism of heat source, material guide mechanism, and the control mechanism is installed on material guide mechanism
Bottom and it can be used for controlling the extrusion bore of consumptive material, squeeze out flow, the guiding mechanism is set to the middle part of material guide mechanism,
The leading end of guiding mechanism and the output end of driving mechanism connect and can drive guiding mechanism by the output end of driving mechanism
Leading end be subjected to displacement on guide direction；
The material guide mechanism includes extrusion outer wall, drainage conduit, extrusion outer wall it is tapered and be provided with outside extrusion
The inner cavity of wall coaxial line, drainage conduit are connected to the exhaust end of bin stock actuator base, are had if drainage conduit bottom side of the wall is circumferentially arranged
Dry relief hole and adjacent relief hole are in be evenly spaced on, and ring packing block and ring packing block are provided with above relief hole
Coaxial with drainage conduit, ring packing block is matched with extrusion outer wall inner cavity top and is sealed and ring packing block can be along extrusion
The axis of outer wall moves, and drainage conduit lower end is connected with control mechanism and control mechanism is accommodated in outside ring packing block and extrusion
The cavity that wall is formed, the control mechanism include limit material block, and limit material block is coaxially connected in the lower end of drainage conduit and to limit material block
Round table-like in coaxial pair, by top to bottom round platform radius, first gradually increase is gradually reduced and limits material block lower part limit material block again
Round platform busbar is parallel with the busbar of extrusion outer wall, is provided with several material guide holes on limit material block, 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 limit material block top, and the first material guide hole can be close by annular
The cavity that envelope block is formed with extrusion outer wall is connected with the relief hole for being set to drainage conduit lower end, and the second material guide hole is coaxially set
The bottom and the second material guide hole for being placed in limit material block lower part round platform are connected to the first material guide hole, and the bottom of extrusion outer wall is provided with
Extrusion and extrusion is connected to the inner cavity of extrusion outer wall, extrusion it is coaxial with the second material guide hole and squeeze out port radius with
The diameter of the round platform radius matching of limit material block lower part and the second material guide hole is less than extrusion diameter, and vectoring aircraft is provided in the middle part of drainage conduit
Structure, the leading end of guiding mechanism and the output end of driving mechanism connect and drainage conduit can be driven to be moved along own axes direction,
Guiding mechanism, which can be used for guiding drainage conduit and draw limit material block, to be moved along the central axial direction of extrusion outer wall, it can be achieved that squeezing out
The adjustment of mouth opening of external wall size.
2. metal powder according to claim 1 increases the variable-flow formula stereo shaping printer of material accumulation, which is characterized in that
The guiding mechanism includes being set to the shifting block of discharge wall portion, and shifting block is arranged along drainage conduit axisymmetrical and the axis of shifting block
Line is along the radial distribution of drainage conduit, the output end connection of shifting block and driving mechanism；The output end of driving mechanism, which can push, to be dialled
Block simultaneously draws drainage conduit and is moved along own axes, limit material block lower part round platform can be made to be converted to by matching status with extrusion outer wall de-
From state, or limit material block lower part round platform is made to be converted to matching status by disengaged position with extrusion outer wall.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710626528.3A CN107160689B (en) | 2017-07-27 | 2017-07-27 | Metal powder increases the variable-flow formula stereo shaping printer of material accumulation |
| CN201810447433.XA CN108556351A (en) | 2017-07-27 | 2017-07-27 | The photosensitive natural gum accumulation adjustable stereo shaping printer of precision |
| CN201810447451.8A CN108501372A (en) | 2017-07-27 | 2017-07-27 | Ceramics accumulate the molding adjustable stereo shaping printer of accuracy |
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| CN201710626528.3A CN107160689B (en) | 2017-07-27 | 2017-07-27 | Metal powder increases the variable-flow formula stereo shaping printer of material accumulation |
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| CN201810447433.XA Division CN108556351A (en) | 2017-07-27 | 2017-07-27 | The photosensitive natural gum accumulation adjustable stereo shaping printer of precision |
| CN201810447451.8A Division CN108501372A (en) | 2017-07-27 | 2017-07-27 | Ceramics accumulate the molding adjustable stereo shaping printer of accuracy |
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| CN107160689B true CN107160689B (en) | 2018-09-28 |
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| CN201810447433.XA Withdrawn CN108556351A (en) | 2017-07-27 | 2017-07-27 | The photosensitive natural gum accumulation adjustable stereo shaping printer of precision |
| CN201810447451.8A Withdrawn CN108501372A (en) | 2017-07-27 | 2017-07-27 | Ceramics accumulate the molding adjustable stereo shaping printer of accuracy |
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| CN201810447433.XA Withdrawn CN108556351A (en) | 2017-07-27 | 2017-07-27 | The photosensitive natural gum accumulation adjustable stereo shaping printer of precision |
| CN201810447451.8A Withdrawn CN108501372A (en) | 2017-07-27 | 2017-07-27 | Ceramics accumulate the molding adjustable stereo shaping printer of accuracy |
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| CN107214958B (en) * | 2017-07-27 | 2018-06-26 | 苏艳敏 | Double-caliber 3D printer nozzle |
| EP3875251B1 (en) * | 2018-10-31 | 2022-12-07 | Weidong Huang | Apparatus for 3d printing and control method thereof |
| CN111113888B (en) * | 2018-10-31 | 2021-10-19 | 黄卫东 | Apparatus for 3D printing and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204367422U (en) * | 2014-12-10 | 2015-06-03 | 南京煜宸激光科技有限公司 | A kind of printing head assembly printed for 3D |
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| 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 |
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2017
- 2017-07-27 CN CN201710626528.3A patent/CN107160689B/en active Active
- 2017-07-27 CN CN201810447433.XA patent/CN108556351A/en not_active Withdrawn
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| CN204367422U (en) * | 2014-12-10 | 2015-06-03 | 南京煜宸激光科技有限公司 | A kind of printing head assembly printed for 3D |
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| CN107160689A (en) | 2017-09-15 |
| CN108501372A (en) | 2018-09-07 |
| CN108556351A (en) | 2018-09-21 |
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