CN108688139A - The stereoforming method of photosensitive natural gum accumulation molding - Google Patents
The stereoforming method of photosensitive natural gum accumulation molding Download PDFInfo
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- CN108688139A CN108688139A CN201810447237.2A CN201810447237A CN108688139A CN 108688139 A CN108688139 A CN 108688139A CN 201810447237 A CN201810447237 A CN 201810447237A CN 108688139 A CN108688139 A CN 108688139A
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- Prior art keywords
- wall
- extrusion
- block
- drainage conduit
- material guide
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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
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
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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
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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
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
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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
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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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)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The invention discloses the stereoforming methods of photosensitive gummy accumulation molding, and step includes step 1:It is the second guide pore radius that limit material block, which is in extrusion outer wall inner wall and matches sealing state and squeeze out radius, power on, photosensitive gummy raw material is transported to material guide mechanism by bin stock mechanism, and the exhaust end of bin stock actuator base is connect with the feed end on material guide mechanism top;Step 2:The photosensitive natural gum of molten state in cavity squeezes out extrusion outer wall by the second material guide hole;Step 3:Required precision reduces, squeezes out radius increase, driving is connected thereto limit material block and is moved to the direction far from extrusion outer wall along the axis of drainage conduit and make to generate gap between limit material block and extrusion outer wall in drainage conduit motion process, the extrusion port radius that radius is extrusion outer wall is squeezed out, the photosensitive natural gum of molten state in cavity is squeezed to extrusion by second material guide hole in gap, limit material block between limit material block and extrusion outer wall and squeezed to print job face by extrusion respectively.
Description
The present invention be the applying date be on 07 27th, 2017, application No. is:2017106258222, it is entitled " a kind of
The divisional application of the patent of invention of the Method of printing of dual-caliber, variable-flow formula 3D printer ".
Technical field
The present invention relates to a kind of 3D printer extrusions, and in particular to the stereoforming method of photosensitive natural gum accumulation molding.
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.
The stereoforming method of photosensitive natural gum accumulation molding, step include:
S1. limit material block is in extrusion outer wall inner wall matches sealing state and squeezes out radius as the second guide pore radius, connects
Photosensitive gummy raw material is transported to material guide mechanism, the exhaust end and material guide mechanism of bin stock actuator base in energization source by bin stock mechanism
The feed end on top connects, and the material guide mechanism by bin stock mechanism for being squeezed consumptive material under material guide mechanism exhaust end
The print job face of side, the middle part setting of material guide mechanism are provided with the heating mechanism of heat source needed for consumptive material melting;
Material guide mechanism includes extrusion outer wall, drainage conduit, and extrusion outer wall is tapered and is provided with and extrusion wall coaxial
The inner cavity of 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 several discharges
Hole and adjacent relief hole are provided with ring packing block and ring packing block and discharge in being evenly spaced on above relief hole
Pipe is coaxial, and ring packing block is matched with extrusion outer wall inner cavity top and sealed and ring packing block can be along extrusion outer wall
Axis moves, and drainage conduit lower end is connected with control mechanism and control mechanism is accommodated in ring packing block and is formed with extrusion outer wall
Cavity
Photosensitive natural gum in drainage conduit is heated to molten state by the heat source in heating mechanism, and the photosensitive natural gum of molten state is by storing
The discharge of material mechanism exhaust end along drainage conduit flows from axis to drainage conduit and be discharged by the relief hole of drainage conduit lower end
In the cavity that extrusion outer wall, ring packing block and limit material block are formed;
S2. since control mechanism includes limit material block, limit material block is coaxially connected in the lower end of drainage conduit and to limit material block in coaxial double
Round table-like, limit material block is first gradually increased the round platform busbar for being gradually reduced and limiting material block lower part again by top to bottom round platform radius
It is parallel with the busbar of extrusion outer wall, several material guide holes are provided on limit material block, the material guide hole includes several first guides
Hole, the second material guide hole, the first material guide hole are set to the round platform on limit material block top, the first material guide hole can by ring packing block with squeeze
The cavity that outlet outer wall is formed 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 expected in limit
The bottom of block lower part round platform and the second material guide hole is connected to the first material guide hole;So that positioned at extrusion outer wall, ring packing block
And the photosensitive natural gum of molten state that limit material block is formed in cavity squeezes out extrusion outer wall by the second material guide hole;
S3. when printing precision requires to reduce or extrusion radius needs to increase, since material guide mechanism further includes control mechanism, draws
Mechanism is led, the control mechanism is installed on the bottom of material guide mechanism and can be used for controlling and squeezes out bore, squeezes out flow, described
Guiding mechanism is set to the middle part of material guide mechanism, and the leading end of guiding mechanism and the output end of driving mechanism connect and pass through drive
The output end of motivation structure can drive the leading end of guiding mechanism to be subjected to displacement on guide direction;The vectoring aircraft being connect with drainage conduit
Structure under the action of driving mechanism, driving drainage conduit moved upwards along center axis, in drainage conduit motion process driving and its
Connection limit material block moves to the direction far from extrusion outer wall along the axis of drainage conduit and makes between limit material block and extrusion outer wall
Gap is generated, the extrusion port radius that radius is extrusion outer wall is squeezed out;Positioned at extrusion outer wall, ring packing block and limit material block
The photosensitive natural gum of molten state formed in cavity is led by second of the gap, limit material block between limit material block and extrusion outer wall respectively
Material hole squeezes to extrusion and is squeezed to print job face by extrusion.
In above-mentioned steps S1, the bin stock mechanism includes that can store the material-storing chamber of consumptive material, and material-storing chamber wall coaxial is set
It is in be evenly spaced on to be equipped with several annular fins and adjacent annular cooling fin;
In above-mentioned steps S3, extrusion outer wall is connected through a screw thread part and is connect with heating mechanism shell, and threaded connector
Coaxial to be socketed on drainage conduit, threaded connector includes upper threaded connector, lower threaded connector and upper threaded connector and adds
The mounting hole matching of hot mechanism shell, lower threaded connector are matched with extrusion outer wall far from extrusion one end.
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 translation is controlled 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, squeezing out radius is become the extrusion port radius of extrusion outer wall from the second guide pore radius, 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, 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, a kind of dual-caliber of the invention, variable-flow formula 3D printer extrusion include material guide mechanism 10, drive
Motivation structure 20, heating mechanism 30, bin stock mechanism 40, bin stock mechanism 40 are provided with inner cavity and inner cavity and store for printing 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 the print job face by consumptive material by the extruding of bin stock mechanism 40 extremely below 10 exhaust end of material guide mechanism, in material guide mechanism 10
Portion's setting is provided with the heating mechanism 30 of heat source needed for consumptive material melting, and material guide mechanism 10 further includes control mechanism, guiding mechanism, institute
Control mechanism is stated to be installed on the bottom of material guide mechanism 10 and can be used for controlling the extrusion bore of consumptive material, squeeze out flow, 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 end of driving mechanism 20
The output end 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, 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 stereoforming method of photosensitive natural gum accumulation molding, 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 half
Diameter powers on, and the consumptive material in drainage conduit 12 is heated to molten state, the consumptive material of molten state by the heat source in heating mechanism 30
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
Relief hole be discharged into extrusion outer wall 11, ring packing block 13 and limit material block 14 formed cavity in;
S2. in the lower end of drainage conduit and material block is limited in coaxial double round table-like, limit material block is by top since limit material block is coaxially connected
First gradually increase the busbar of the round platform busbar and extrusion outer wall that are gradually reduced and limit material block lower part again to bottom round platform radius
It is parallel, it 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, and first
Material guide hole is set to the round platform on limit material block top, the cavity that the first material guide hole can be formed by ring packing block and extrusion outer wall
It is connected with the relief hole for being set to drainage conduit lower end, the coaxial arrangement of the second material guide hole expects the bottom of block lower part round platform simultaneously in limit
And second material guide hole be connected to the first material guide hole;So that positioned at extrusion outer wall 11, ring packing block 13 and limit material 14 shape of block
Extrusion outer wall 11 is squeezed out by the second material guide hole at the molten state consumptive material in cavity;
S3. when printing precision requires to reduce or extrusion radius needs to increase, motor 21 works, the output shaft driving of motor 21
Bootstrap block 22 connected to it is moved along the central axial direction perpendicular to drainage conduit 12, is provided with and is installed on bootstrap block 22
The guide rail that the shifting block 15 of 12 wall portion of Arrangement pipe matches can push shifting block 15 in the translation motion of bootstrap block 22 and draw Arrangement pipe
12 move upwards along center axis, and the axis for being connected thereto limit material block 14 along drainage conduit 12 is driven in 12 motion process of drainage conduit
Gap is moved and makes to generate between limit material block 14 and extrusion outer wall 11 to the direction far from extrusion outer wall 11, squeezing out radius is
The extrusion port radius of extrusion outer wall 11;It is formed in cavity positioned at extrusion outer wall 11, ring packing block 13 and limit material block 14
Molten state consumptive material pass through that limit expects gap between block 14 and extrusion outer wall 11, the second material guide hole of limit material block 14 squeezes respectively
It is squeezed to print job face to extrusion and 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. the stereoforming method of photosensitive natural gum accumulation molding, step include:
S1. limit material block is in extrusion outer wall inner wall matches sealing state and squeezes out radius as the second guide pore radius, connects
Photosensitive gummy raw material is transported to material guide mechanism, the exhaust end and material guide mechanism of bin stock actuator base in energization source by bin stock mechanism
The feed end on top connects, and the material guide mechanism by bin stock mechanism for being squeezed consumptive material under material guide mechanism exhaust end
The print job face of side, the middle part setting of material guide mechanism are provided with the heating mechanism of heat source needed for consumptive material melting;
Material guide mechanism includes extrusion outer wall, drainage conduit, and extrusion outer wall is tapered and is provided with and extrusion wall coaxial
The inner cavity of 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 several discharges
Hole and adjacent relief hole are provided with ring packing block and ring packing block and discharge in being evenly spaced on above relief hole
Pipe is coaxial, and ring packing block is matched with extrusion outer wall inner cavity top and sealed and ring packing block can be along extrusion outer wall
Axis moves, and drainage conduit lower end is connected with control mechanism and control mechanism is accommodated in ring packing block and is formed with extrusion outer wall
Cavity
Photosensitive natural gum in drainage conduit is heated to molten state by the heat source in heating mechanism, and the photosensitive natural gum of molten state is by storing
The discharge of material mechanism exhaust end along drainage conduit flows from axis to drainage conduit and be discharged by the relief hole of drainage conduit lower end
In the cavity that extrusion outer wall, ring packing block and limit material block are formed;
S2. since control mechanism includes limit material block, limit material block is coaxially connected in the lower end of drainage conduit and to limit material block in coaxial double
Round table-like, limit material block is first gradually increased the round platform busbar for being gradually reduced and limiting material block lower part again by top to bottom round platform radius
It is parallel with the busbar of extrusion outer wall, several material guide holes are provided on limit material block, the material guide hole includes several first guides
Hole, the second material guide hole, the first material guide hole are set to the round platform on limit material block top, the first material guide hole can by ring packing block with squeeze
The cavity that outlet outer wall is formed 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 expected in limit
The bottom of block lower part round platform and the second material guide hole is connected to the first material guide hole;So that positioned at extrusion outer wall, ring packing block
And the photosensitive natural gum of molten state that limit material block is formed in cavity squeezes out extrusion outer wall by the second material guide hole;
S3. when printing precision requires to reduce or extrusion radius needs to increase, since material guide mechanism further includes control mechanism, draws
Mechanism is led, the control mechanism is installed on the bottom of material guide mechanism and can be used for controlling and squeezes out bore, squeezes out flow, described
Guiding mechanism is set to the middle part of material guide mechanism, and the leading end of guiding mechanism and the output end of driving mechanism connect and pass through drive
The output end of motivation structure can drive the leading end of guiding mechanism to be subjected to displacement on guide direction;The vectoring aircraft being connect with drainage conduit
Structure under the action of driving mechanism, driving drainage conduit moved upwards along center axis, in drainage conduit motion process driving and its
Connection limit material block moves to the direction far from extrusion outer wall along the axis of drainage conduit and makes between limit material block and extrusion outer wall
Gap is generated, the extrusion port radius that radius is extrusion outer wall is squeezed out;Positioned at extrusion outer wall, ring packing block and limit material block
The photosensitive natural gum of molten state formed in cavity is led by second of the gap, limit material block between limit material block and extrusion outer wall respectively
Material hole squeezes to extrusion and is squeezed to print job face by extrusion.
2. the stereoforming method of photosensitive gummy accumulation molding according to claim 1, described in above-mentioned steps S1
Bin stock mechanism includes that can store the material-storing chamber of consumptive material, and material-storing chamber wall coaxial is provided with several annular fins and adjacent annular
Cooling fin is in be evenly spaced on;
In above-mentioned steps S3, extrusion outer wall is connected through a screw thread part and is connect with heating mechanism shell, and threaded connector
Coaxial to be socketed on drainage conduit, threaded connector includes upper threaded connector, lower threaded connector and upper threaded connector and adds
The mounting hole matching of hot mechanism shell, lower threaded connector are matched with extrusion outer wall far from extrusion one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810447237.2A CN108688139A (en) | 2017-07-27 | 2017-07-27 | The stereoforming method of photosensitive natural gum accumulation molding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810447237.2A CN108688139A (en) | 2017-07-27 | 2017-07-27 | The stereoforming method of photosensitive natural gum accumulation molding |
| CN201710625822.2A CN107263854B (en) | 2017-07-27 | 2017-07-27 | Molding variable-flow formula stereoforming method is accumulated for ceramics |
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| CN201710625822.2A Division CN107263854B (en) | 2017-07-27 | 2017-07-27 | Molding variable-flow formula stereoforming method is accumulated for ceramics |
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| CN201710625822.2A Active CN107263854B (en) | 2017-07-27 | 2017-07-27 | Molding variable-flow formula stereoforming method is accumulated for ceramics |
| CN201810447237.2A Withdrawn CN108688139A (en) | 2017-07-27 | 2017-07-27 | The stereoforming method of photosensitive natural gum accumulation molding |
| CN201810447341.1A Withdrawn CN108688140A (en) | 2017-07-27 | 2017-07-27 | Stereoforming method for the accumulation of ceramic accuracy |
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| CN107214958B (en) * | 2017-07-27 | 2018-06-26 | 苏艳敏 | A kind of dual-caliber 3D printer nozzle |
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| CN106032063B (en) * | 2015-03-16 | 2019-02-01 | 中国科学院西安光学精密机械研究所 | A kind of spraying type 3D printing spray head and its control method |
| 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 |
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- 2017-07-27 CN CN201710625822.2A patent/CN107263854B/en active Active
- 2017-07-27 CN CN201810447237.2A patent/CN108688139A/en not_active Withdrawn
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Also Published As
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|---|---|
| CN107263854B (en) | 2018-09-28 |
| CN108688140A (en) | 2018-10-23 |
| CN107263854A (en) | 2017-10-20 |
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Application publication date: 20181023 |