CN107175819B - A kind of flow automatic diameter changing 3D printing extruder head - Google Patents
A kind of flow automatic diameter changing 3D printing extruder head Download PDFInfo
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- CN107175819B CN107175819B CN201710625824.1A CN201710625824A CN107175819B CN 107175819 B CN107175819 B CN 107175819B CN 201710625824 A CN201710625824 A CN 201710625824A CN 107175819 B CN107175819 B CN 107175819B
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- flow control
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- guiding tube
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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
- B29C64/10—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
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- 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
- B33Y10/00—Processes of additive manufacturing
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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)
- Coating Apparatus (AREA)
Abstract
It include supportive body the invention discloses a kind of flow automatic diameter changing 3D printing extruder head, the material storage pipe for storing printing consumables is provided on supportive body, supportive body lower end is connected with spray head, spray head includes the material guiding tube for conveying consumptive material and with material storage pipe coaxial line arrangement, material guiding tube and material storage pipe are slidably socketed and material guiding tube can be slided along own axes, it is provided with heat source in supportive body and the consumptive material being delivered in material guiding tube by material storage pipe can be heated to molten state by heat source, spray head can squeeze the molten state consumptive material conveyed by material guiding tube to print job face, spray head further includes extrusion outer wall, flow control body, the inner wall of flow control body and extrusion outer wall can be in cooperation or disengaged position with the variation of extrusion output, and adjust the extrusion bore of extrusion outer wall；The present invention carries out the adaptivity adjustment of opening range according to consumptive material flow velocity, flow, and controls precision height, can significantly reduce 3D printer time needed for the lower object of printing precision.
Description
Technical field
The present invention relates to a kind of 3D printers, and in particular to a kind of flow automatic diameter changing 3D printing extruder head.
Background technique
3D printing technique brings great convenience for human lives, and 3D printing technique has in terms of food, building, medicine
It is widely applied, there is big advantage to the manufacture of complex part, 3D printer can pass through the cooperation with computer, lathe
Manufacture is carried out to complicated workpiece and its manufacturing time is short, manufacturing cost is low, the accuracy of manufacture compared with conventional fabrication processes
It is high.
Existing 3D printing extruder head in printing workpiece fabrication, the extrusion radius of extrusion be it is changeless, when beating
When printing the bigger extrusion output of workpiece needs and squeezing out radius, existing extrusion can not need to change its extrusion output according to workpiece
With extrusion radius.
Summary of the invention
To solve the deficiencies in the prior art, it is an object of the invention to provide the changeable 3D of radius is squeezed out in a kind of print procedure
Printer extruder head, and the present invention has the function of automatically switching to squeeze out radius according to extrusion output.
To realize the above-mentioned technical purpose, the technical solution adopted in the present invention is as follows.
A kind of flow automatic diameter changing 3D printing extruder head includes supportive body, is provided on supportive body for storing printing
The material storage pipe of consumptive material, supportive body lower end are connected with spray head, spray head include for convey consumptive material and with material storage pipe coaxial line cloth
The material guiding tube set, material guiding tube and material storage pipe are slidably socketed and material guiding tube can be slided along own axes, is provided in supportive body
Heat source and heat source can be heated to molten state for the consumptive material in material guiding tube is delivered to by material storage pipe, spray head can will be conveyed by material guiding tube
Molten state consumptive material squeeze to print job face, spray head further includes extrusion outer wall, flow control body, flow control body and is squeezed out
The inner wall of mouth outer wall can be in cooperation or disengaged position with the variation of extrusion output, and adjust the extrusion bore of extrusion outer wall.
The further improvement of above-mentioned technical proposal.
Extrusion outer wall, flow control body are distinguished in a circular table shape and extrusion outer wall and are coaxially disposed close to material storage pipe side
There are cylindrical outer wall, flow control body to be coaxially arranged with column block, the cylindrical outer wall and stream of extrusion outer wall close to material storage pipe side
It measures the column block sealing matching of control volume and the bus of extrusion outer wall and the bus of flow control body is parallel, extrusion outer wall
It is provided with cavity and cavity can store flow control body, the bottom of extrusion outer wall is provided with extrusion and extrusion and stream
The bottom surface matching of control volume is measured, flow control body is fixedly connected with the exhaust end of material guiding tube, and flow control body is coaxially socketed on crowded
It exports the inner wall of outer wall and flow control body can be arranged on flow control body along own axes close to or far from extrusion outer wall
There are several material guide holes, the material guide hole includes the first material guide hole, the second material guide hole, and the first material guide hole is coaxially disposed in flow control
The bottom of body and the first material guide hole is connected to material guiding tube, the diameter of the first material guide hole are less than the extrusion half of extrusion outer wall
Diameter, the second material guide hole along flow control body circumferential setting and the second material guide hole axis perpendicular to flow control body side
And second material guide hole be connected to material guiding tube；When consumptive material extrusion output is smaller, spray head is in first state, and flow control body is by gravity
Pressure and consumptive material pair of the flow control body far from extrusion outer wall are made to flow control body application with consumptive material at the second material guide hole
The component of its pressure vertical direction is less than flow control body self gravity, and flow control body and extrusion outer wall inner wall is tight at this time
Closely connected conjunction, extrusion match with the bottom surface of flow control body and squeeze out the radius that radius is the first material guide hole；When consumptive material squeezes out
When measuring larger, spray head is in the second state, and consumptive material is greater than flow control body in vertical direction component to the pressure of flow control body
Self gravity, flow control body is moved along own axes to far from the direction of extrusion outer wall inner wall at this time, flow control body with
There are contact gap between extrusion outer wall inner wall, molten state consumptive material is discharged by the first material guide hole, the second material guide hole respectively, melting
Along flow control body after state consumptive material moves to extrusion after being discharged by the first material guide hole, molten state consumptive material is discharged by the second material guide hole
It is moved with the gap of extrusion outer wall to extrusion, the consumptive material that the first material guide hole, the second material guide hole are discharged collaborates at extrusion
And there is extrusion to squeeze to print job face.
The further improvement of above-mentioned technical proposal.
Threaded connector that can be fixed by spray head and supportive body, threaded connector are provided between spray head and supportive body
Upper end connect, the connection of the extrusion outer wall of the lower end of threaded connector and spray head and threaded connector and squeeze with supportive body
Evacuation chamber is formed between outlet outer wall.
The further improvement of above-mentioned technical proposal.
The bullet for being located remotely from each other flow control body and threaded connector is provided between flow control body and threaded connector
Spring；Spring provides the active force close to extrusion outer wall for flow control body and guarantees flow control body in the first state and squeeze
The contact gap for exporting outer wall is zero, prevents consumptive material under first state from making it away from extrusion outer wall to what flow control body applied
Extrusion stress is greater than the self gravity of flow control body, and it is de- to ensure that first state flow control body does not occur with extrusion outer wall
From and ensure stability of the extrusion when squeezing out consumptive material.
The further improvement of above-mentioned technical proposal.
Second material guide hole is circumferentially evenly spaced on along flow control body and adjacent second material guide hole mounting height is identical；
The component phase of molten state consumptive material in second material guide hole in the horizontal direction to the pressure of flow control body is made using the layout type
Mutually balance, the pressure that can prevent molten state consumptive material from generating cause the displacement of flow control body radially.
A kind of flow automatic diameter changing 3D printing extrusion method, step include:
S1. power on, the consumptive material being located in material guiding tube is heated to molten state, molten state consumption by the heat source in supportive body
Material is flowed along the axis of material guiding tube to flow control body direction；
S2. under first state, the inner wall of extrusion outer wall is matched with flow control body sealing, due to extrusion outer wall, stream
Control volume is in a circular table shape respectively and extrusion outer wall close to material storage pipe side is coaxially arranged with cylindrical outer wall, flow control body for amount
Column block, the column block sealing of the cylindrical outer wall and flow control body of extrusion outer wall are coaxially arranged with close to material storage pipe side
Match and the bus of extrusion outer wall is parallel with the bus of flow control body, extrusion outer wall is provided with cavity and cavity can be received
Receive flow control body, the bottom of extrusion outer wall is provided with extrusion and extrusion is matched with the bottom surface of flow control body, stream
Amount control volume is fixedly connected with the exhaust end of material guiding tube, and flow control body is coaxially socketed on the inner wall and flow of extrusion outer wall
Control volume can be provided with several material guide holes, the guide on flow control body along own axes close to or far from extrusion outer wall
Hole includes the first material guide hole, the second material guide hole, bottom and first guide of the first material guide hole coaxial arrangement in flow control body
Hole is connected to material guiding tube, and the diameter of the first material guide hole is less than the extrusion port radius of extrusion outer wall, and the second material guide hole is along flow control
Side and second material guide hole and material guiding tube of the axis of the circumferential setting of body processed and the second material guide hole perpendicular to flow control body
Connection；At this point, molten state consumptive material applies point for being directed toward the pressure of flow control body axis in vertical direction to flow control side
Power is less than flow control body self gravity, and molten state consumptive material is squeezed out by the first material guide hole to print job after being discharged from material guiding tube
Face；
S3. when the printing precision needed for workpiece reduces, extrusion output improves, the extrusion pressure that material storage pipe squeezes out consumptive material increases,
The molten state consumptive material motion stress transported in material guiding tube increases, the direction flow that molten state consumptive material generates flow control body side
The pressure of control body axis, which increases and is directed toward the pressure of flow control body axis, is greater than flow control in the component of vertical direction
Body self gravity, the pressure that flow control body axis is directed toward by flow control body surface that flow control body is generated in molten state consumptive material
Power effect under, flow control body along material guiding tube axis far between extrusion outer wall and flow control body and extrusion outer wall
The gap passed through for molten state consumptive material is formed, and it is synchronous that the material guiding tube being secured to is drawn in flow control body motion process
Movement；
S4. in above-mentioned steps S3, pass through the first material guide hole, the second material guide hole respectively positioned at the molten state consumptive material of material guiding tube
The consumptive material of discharge, the discharge of the second material guide hole is discharged by the gap between flow control body and extrusion outer wall with the first material guide hole
Molten state consumptive material collaborate and pass through extrusion to squeeze out to print job face.
More optimize, in above-mentioned step S1, bin stock pipe outer wall, which is provided with, to radiate to consumptive material in material storage pipe
Annular fin；Consumptive material in material storage pipe is prevented by the heat transfer of material guiding tube and causes temperature is excessively high to cause consumptive material in material storage pipe
Damage, softening.
Further, in above-mentioned steps S1, the junction of material storage pipe and material guiding tube is provided with annular thermal boundary；Pass through ring
Shape thermal boundary has delayed heat transmitting of the material guiding tube to material storage pipe again, ensure that storage consumptive material is because temperature is excessively high and soft in material storage pipe
Change.
More preferably, be provided in above-mentioned steps S3, between threaded connector and flow control body make threaded connector with
The spring that flow control body is located remotely from each other, when the direction flow control body axis that molten state consumptive material generates flow control body side
Pressure increase and be directed toward the pressure of flow control body axis and be greater than flow control body self gravity in the component of vertical direction
When with the resultant force of spring force, flow control body can along its own axis runout extrusion outer wall, and make flow control body with
The gap passed through for molten state consumptive material is formed between extrusion outer wall；Spring ensure that the interior of extrusion outer wall under first state
Sealing between wall and flow control body matches, and annular spacing groove makes flow control body in the axial direction in moving process, spring
The displacement along flow control body circumferential direction does not occur and guarantees that spring is not caught between flow control body and extrusion outer wall, ensure that
The stability of stability and the working condition switching of printing.
Compared with prior art, the present invention obtain progress and advantage be the present invention according to consumptive material flow velocity, flow into
The adaptivity of row opening range adjusts, and controls precision height, can significantly reduce 3D printer in the lower object institute of printing precision
The time needed.
Detailed description of the invention
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, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is schematic structural view of the invention.
Fig. 2 is entirety sectional view of the present invention.
Fig. 3 is material storage pipe of the present invention and spray head connection figure.
Fig. 4 is nozzle structure schematic diagram of the present invention.
Fig. 5 is first state schematic diagram of the present invention.
Fig. 6 is the second status diagram of the invention.
Fig. 7 is the second state spray head schematic diagram of the invention.
Each label meaning in figure are as follows: 10. spray heads, 11. material guiding tubes, 12. extrusion outer walls, 13. flow control bodies, 14.
Threaded connector, 15. springs；
20. supportive body；
30. material storage pipe.
Specific embodiment
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 description, 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, every other reality obtained
Example is applied, the scope of the present invention is belonged to.
Referring to attached drawing 1,2, a kind of flow automatic diameter changing 3D printing extruder head includes being used to support and connecting entire mechanism
Supportive body 20 is provided with the material storage pipe 30 for storing printing consumables on supportive body 20, and 20 lower end of supportive body is connected with
Spray head 10, spray head 10 include the material guiding tube 11 for conveying consumptive material and coaxial line arrangement, material guiding tube 11 and material storage pipe 30
It is slidably socketed and material guiding tube 11 can be slided along own axes, heat source and heat source are provided in supportive body 20 can will be by bin stock
The consumptive material that pipe 30 is delivered in material guiding tube 11 is heated to molten state, and spray head 10 can squeeze the molten state consumptive material conveyed by material guiding tube 11
It is depressed into print job face, the fixed screw thread of spray head 10 and supportive body 20 can be connected by being provided between spray head 10 and supportive body 20
Fitting 14, spray head 10 further include extrusion outer wall 12, flow control body 13, the inner wall of flow control body 13 and extrusion outer wall 12
Cooperation or disengaged position can be in the variation of extrusion output；When the inner wall of flow control body 13 and extrusion outer wall 12 is in cooperation
State, extrusion are in first state, i.e., small-bore, small extrusion output print state, when flow control body 13 and extrusion outer wall
12 are in disengaged position, and extrusion is in the second state, i.e. heavy caliber, big extrusion output state.
More specifically, the upper end of threaded connector 14 connect with supportive body 20, the lower end of threaded connector 14 and spray
First 10 extrusion outer wall 12 connects and is formed with evacuation chamber between threaded connector 14 and extrusion outer wall 12；When flow control
When the inner wall of body 13 processed and extrusion outer wall 12 is in disengaged position, the evacuation between threaded connector 14 and extrusion outer wall 12
Chamber can provide sufficient avoiding space for flow control body 13, prevent from leading to flow control body 13 because of avoiding space deficiency and squeeze
The inner wall of outlet outer wall 12 can not be detached from.
More specifically, it is close to distinguish in a circular table shape and extrusion outer wall 12 for extrusion outer wall 12, flow control body 13
14 side of threaded connector is coaxially arranged with cylindrical outer wall, flow control body 13 is coaxially arranged with close to 14 side of threaded connector
Column block, the cylindrical outer wall of extrusion outer wall 12 is matched with the sealing of the column block of flow control body 13 and extrusion outer wall 12
Bus is parallel with the bus of flow control body 13, and extrusion outer wall 12 is provided with cavity and cavity can store flow control body
13, the bottom of extrusion outer wall 12 is provided with extrusion and extrusion is matched with the bottom surface of flow control body 13, flow control
Body 13 is fixedly connected with the exhaust end of material guiding tube 11, and flow control body 13 is coaxially socketed on the inner wall and stream of extrusion outer wall 12
Several material guide holes can be provided on flow control body 13 along own axes close to or far from extrusion outer wall 12 by measuring control volume 13,
The material guide hole includes the first material guide hole, the second material guide hole, and the first material guide hole is coaxially disposed in the bottom of flow control body 13 simultaneously
And first material guide hole be connected to material guiding tube 11, the diameter of the first material guide hole is less than the extrusion port radius of extrusion outer wall 12, second
Material guide hole along flow control body 13 circumferential setting and the second material guide hole axis perpendicular to flow control body 13 side and
Second material guide hole is connected to material guiding tube 11；When consumptive material extrusion output is smaller, spray head is in first state, and flow control body 13 is by weight
Consumptive material makes pressure of the flow control body 13 far from extrusion outer wall 12 simultaneously to the application of flow control body 13 at power and the second material guide hole
And consumptive material is less than 13 self gravity of flow control body to the component of its pressure vertical direction, flow control body 13 and extrusion at this time
The contact gap of 12 inner wall of outer wall is zero, and it is the first guide that extrusion, which matches with the bottom surface of flow control body 13 and squeezes out radius,
The radius in hole, when consumptive material extrusion output is larger, spray head 10 is in the second state, and consumptive material is to the pressure of flow control body 13 vertical
Direction component is greater than 13 self gravity of flow control body, and flow control body 13 is along own axes to far from extrusion outer wall 12 at this time
The direction of inner wall moves, and there are contact gap, molten state consumptive material difference between 12 inner wall of flow control body 13 and extrusion outer wall
It is discharged by the first material guide hole, the second material guide hole, molten state consumptive material moves to extrusion after being discharged by the first material guide hole, molten state consumes
Material is moved along the gap of flow control body and extrusion outer wall 12 to extrusion after being discharged from the second material guide hole, the first material guide hole,
The consumptive material of second material guide hole discharge collaborates at extrusion and has extrusion to squeeze to print job face.
More optimize, the second material guide hole is circumferentially evenly spaced on along flow control body 13 and adjacent second material guide hole
Mounting height is identical；Make in the second material guide hole molten state consumptive material to the pressure of flow control body 13 in level using the layout type
Component on direction mutually balances, and the pressure that can prevent molten state consumptive material from generating causes the displacement of flow control body 13 radially.
More perfect, being provided between flow control body 13 and threaded connector 14 connects flow control body 13 and screw thread
The spring 15 that fitting 14 is located remotely from each other；Spring 15 is that flow control body 13 provides active force and the guarantee of close extrusion outer wall 12
The contact gap of flow control body 13 and extrusion outer wall 12 is zero in the first state, prevents under first state consumptive material to flow
What control volume 13 applied makes it away from the self gravity that 12 extrusion stress of extrusion outer wall is greater than flow control body 13, ensure that the
One state flow control body 13 does not occur to be detached from and ensures stability of the extrusion when squeezing out consumptive material with extrusion outer wall 12.
More optimized, the material storage pipe 30 includes the material storage pipe that can store consumptive material, if material storage pipe 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 storage pipe into
Row heat dissipation, prevents consumptive material in material storage pipe by the heat transfer of material guiding tube 11 and leads to the excessively high damage for causing consumptive material in material storage pipe of temperature
Bad, softening.
Further, material guiding tube 11 is socketed on outside the heat source being arranged in supportive body 20；It can extend by this way and draw
Consumptive material is thermally formed and melt consumptive material can sufficiently to molten state in expects pipe 11, prevents due to heating is uneven or heating is insufficient
Solid-state consumptive material is caused to block extrusion.
More optimize, the junction of material storage pipe 30 and material guiding tube 11 is provided with annular thermal boundary；Annular thermal boundary passes through increase
Heat transfer resistance, itself heat absorption have delayed transmitting of the heat from material guiding tube 11 to material storage pipe 30, ensure that the work temperature of material storage pipe 30
It spends and prevents that its temperature is excessively high and lead to the damage of consumptive material in material storage pipe, softening.
More optimize, flow control body 13 is provided with annular spacing groove and annular limit close to 14 side of threaded connector
Position slot can store spring 15；When flow control body 13 moves in the axial direction, annular spacing groove limited spring is along flow control body
13 are circumferentially subjected to displacement and avoid being caught between flow control body 13 and extrusion outer wall 12, and then lead to flow control body 13
In the pressure by molten state consumptive material, can not be moved along material guiding tube axis direction.
A kind of flow automatic diameter changing 3D printing extrusion method, step include:
S1. power on, the consumptive material being located in material guiding tube 11 is heated to molten state by the heat source in supportive body 20, is melted
State consumptive material is flowed along the axis of material guiding tube 11 to 13 direction of flow control body；
S2. under first state, the inner wall of extrusion outer wall 12 is matched with the sealing of flow control body 13, molten state consumptive material convection current
The pressure for measuring 13 sides of control application direction 13 axis of flow control body is less than flow control body 13 certainly in the component of vertical direction
Body gravity, molten state consumptive material are squeezed out by the first material guide hole to print job face after being discharged from material guiding tube 11；
S3. when the printing precision needed for workpiece reduces, extrusion output improves, the extrusion pressure that material storage pipe 30 squeezes out consumptive material increases
Greatly, the molten state consumptive material motion stress transported in material guiding tube 11 increases, and molten state consumptive material generates 13 side of flow control body
The pressure for being directed toward 13 axis of flow control body increases and is directed toward component of the pressure in vertical direction of 13 axis of flow control body
Greater than 13 self gravity of flow control body, flow control body 13 is directed toward what molten state consumptive material generated by 13 surface of flow control body
Under the pressure effect of 13 axis of flow control body, flow control body 13 along material guiding tube 11 axis far from extrusion outer wall 12 and
The gap passed through for molten state consumptive material is formed between flow control body 13 and extrusion outer wall 12, and flow control body 13 is transported
It is dynamic to draw the material guiding tube 11 being secured in the process and move synchronously；
S4. in above-mentioned steps S3, pass through the first material guide hole, the second guide respectively positioned at the molten state consumptive material of material guiding tube 11
The consumptive material of hole discharge, the discharge of the second material guide hole passes through the gap between flow control body 13 and extrusion outer wall 12 and the first guide
The molten state consumptive material of hole discharge collaborates and passes through extrusion to squeeze out to print job face.
More optimize, in above-mentioned step S1, the annular fin of bin stock pipe outer wall can to consumptive material in material storage pipe into
Row heat dissipation, prevents consumptive material in material storage pipe by the heat transfer of material guiding tube 11 and leads to the excessively high damage for causing consumptive material in material storage pipe of temperature
Bad, softening.
Further, in above-mentioned steps S1, the junction of material storage pipe 30 and material guiding tube 11 is provided with annular thermal boundary；It is logical
It crosses annular thermal boundary and has delayed heat transmitting of the material guiding tube 11 to material storage pipe 30 again, ensure that storage consumptive material is not because of temperature in material storage pipe 30
It spends high and softens.
More preferably, in above-mentioned steps S3, being provided between threaded connector 14 and flow control body 13 makes to be threadedly coupled
The spring 15 that part 14 and flow control body 13 are located remotely from each other, when the direction stream that molten state consumptive material generates 13 side of flow control body
The pressure increase of amount 13 axis of control volume and the pressure for being directed toward 13 axis of flow control body are greater than in the component of vertical direction to flow
When measuring 13 self gravity of control volume and the resultant force of 15 elastic force of spring, flow control body 13 can be outside its own axis runout extrusion
Wall 12, and to form the gap passed through for molten state consumptive material between flow control body 13 and extrusion outer wall 12；Spring 15
It ensure that the sealing under first state between the inner wall of extrusion outer wall 12 and flow control body 13 matches, annular spacing groove makes to flow
In the axial direction in moving process, spring 15 does not occur along the circumferential displacement of flow control body 13 and guarantees spring amount control volume 13
15 are not caught between flow control body 13 and extrusion outer wall 12, and it is steady to ensure that the stability of printing and working condition switch
It is qualitative.
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 readily apparent to those skilled in the art, defined in the present invention
General Principle can be realized in other embodiments in the case where not departing from spirit or scope of the invention.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 scope.
Claims (4)
1. a kind of flow automatic diameter changing 3D printing extruder head, which is characterized in that be provided on supportive body for storing printing consumption
The material storage pipe of material, supportive body lower end are connected with spray head, and spray head includes for conveying consumptive material and arranging with material storage pipe coaxial line
Material guiding tube, material guiding tube and material storage pipe are slidably socketed and material guiding tube can be slided along own axes, and heat is provided in supportive body
Source and heat source can be heated to molten state for the consumptive material in material guiding tube is delivered to by material storage pipe, and spray head can will be conveyed by material guiding tube
Molten state consumptive material is squeezed to print job face, and spray head further includes extrusion outer wall, flow control body, flow control body and extrusion
The inner wall of outer wall can be in cooperation or disengaged position with the variation of extrusion output, and adjust the extrusion bore of extrusion outer wall；
Extrusion outer wall, flow control body be in a circular table shape respectively and extrusion outer wall close to material storage pipe side is coaxially arranged with column
Shape outer wall, flow control body are coaxially arranged with column block, the cylindrical outer wall of extrusion outer wall and flow control close to material storage pipe side
The column block sealing of body processed matches and the bus of extrusion outer wall and the bus of flow control body are parallel, the setting of extrusion outer wall
There is cavity and cavity can store flow control body, the bottom of extrusion outer wall is provided with extrusion and extrusion and flow control
The bottom surface of body processed matches, and flow control body is fixedly connected with the exhaust end of material guiding tube, and flow control body is coaxially socketed on extrusion
The inner wall and flow control body of outer wall can be along own axes close to or far from extrusion outer wall, if being provided on flow control body
Dry material guide hole, the material guide hole include the first material guide hole, the second material guide hole, and the first material guide hole is coaxially disposed in flow control body
Bottom and the first material guide hole is connected to material guiding tube, the diameter of the first material guide hole are less than the extrusion port radius of extrusion outer wall, the
Two material guide holes along flow control body circumferential setting and the second material guide hole axis perpendicular to flow control body side and the
Two material guide holes are connected to material guiding tube.
2. a kind of flow automatic diameter changing 3D printing extruder head according to claim 1, which is characterized in that spray head and support are led
Threaded connector that can be fixed by spray head and supportive body is provided between body, the upper end of threaded connector and supportive body connect
It connects, the extrusion outer wall of the lower end of threaded connector and spray head is connected and is formed between threaded connector and extrusion outer wall
Avoid chamber.
3. a kind of flow automatic diameter changing 3D printing extruder head according to claim 2, which is characterized in that flow control body with
The spring for being located remotely from each other flow control body and threaded connector is provided between threaded connector.
4. a kind of flow automatic diameter changing 3D printing extruder head according to claim 1, which is characterized in that the second material guide hole edge
Flow control body is circumferentially evenly spaced on and adjacent second material guide hole mounting height is identical.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810532322.9A CN108790148A (en) | 2017-07-27 | 2017-07-27 | More bore stereo shaping extruder heads for increasing material manufacturing |
| CN201710625824.1A CN107175819B (en) | 2017-07-27 | 2017-07-27 | A kind of flow automatic diameter changing 3D printing extruder head |
| CN201810532323.3A CN108437466A (en) | 2017-07-27 | 2017-07-27 | 3D printing extruder head applied to increasing material manufacturing flow automatic diameter changing |
| CN201810533742.9A CN108819245A (en) | 2017-07-27 | 2017-07-27 | More bore stereoforming methods for increasing material manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710625824.1A CN107175819B (en) | 2017-07-27 | 2017-07-27 | A kind of flow automatic diameter changing 3D printing extruder head |
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| CN201810532322.9A Division CN108790148A (en) | 2017-07-27 | 2017-07-27 | More bore stereo shaping extruder heads for increasing material manufacturing |
| CN201810533742.9A Division CN108819245A (en) | 2017-07-27 | 2017-07-27 | More bore stereoforming methods for increasing material manufacturing |
| CN201810532323.3A Division CN108437466A (en) | 2017-07-27 | 2017-07-27 | 3D printing extruder head applied to increasing material manufacturing flow automatic diameter changing |
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| Publication Number | Publication Date |
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| CN107175819A CN107175819A (en) | 2017-09-19 |
| CN107175819B true CN107175819B (en) | 2019-03-22 |
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| CN201710625824.1A Active CN107175819B (en) | 2017-07-27 | 2017-07-27 | A kind of flow automatic diameter changing 3D printing extruder head |
| CN201810533742.9A Withdrawn CN108819245A (en) | 2017-07-27 | 2017-07-27 | More bore stereoforming methods for increasing material manufacturing |
| CN201810532323.3A Withdrawn CN108437466A (en) | 2017-07-27 | 2017-07-27 | 3D printing extruder head applied to increasing material manufacturing flow automatic diameter changing |
| CN201810532322.9A Withdrawn CN108790148A (en) | 2017-07-27 | 2017-07-27 | More bore stereo shaping extruder heads for increasing material manufacturing |
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| CN201810533742.9A Withdrawn CN108819245A (en) | 2017-07-27 | 2017-07-27 | More bore stereoforming methods for increasing material manufacturing |
| CN201810532323.3A Withdrawn CN108437466A (en) | 2017-07-27 | 2017-07-27 | 3D printing extruder head applied to increasing material manufacturing flow automatic diameter changing |
| CN201810532322.9A Withdrawn CN108790148A (en) | 2017-07-27 | 2017-07-27 | More bore stereo shaping extruder heads for increasing material manufacturing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108582792B (en) * | 2018-03-27 | 2020-07-28 | 共享智能铸造产业创新中心有限公司 | Method for inertial compensation of FDM printing extrusion material |
| CN111386187B (en) * | 2018-10-31 | 2022-11-29 | 黄卫东 | Apparatus for 3D printing and control method thereof |
| CN109397687B (en) * | 2018-11-27 | 2020-12-01 | 安徽工程大学 | A 3D printing pen with adjustable caliber |
| 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 |
| CN110884128B (en) * | 2019-10-18 | 2024-05-03 | 深圳市捷泰技术有限公司 | Double-head feeding automatic switching printing device |
| CN112757623B (en) * | 2020-04-03 | 2023-01-20 | 苏州美梦机器有限公司 | Apparatus for 3D printing and control method thereof |
| CN112373026B (en) * | 2020-10-26 | 2022-09-16 | 华东数字医学工程研究院 | Reducing pipe printing nozzle and reducing pipe printing method |
| CN113751727B (en) * | 2021-08-26 | 2023-06-09 | 南方科技大学 | 3D prints shower nozzle and 3D printing device |
Citations (4)
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|---|---|---|---|---|
| EP1810812B1 (en) * | 1999-09-21 | 2013-02-20 | Synventive Molding Solutions, Inc. | Manifold system having flow control |
| CN103876263A (en) * | 2014-03-21 | 2014-06-25 | 浙江大学 | Three-dimensional printer for printing liquid materials |
| CN205553224U (en) * | 2016-02-20 | 2016-09-07 | 苏州市慧通塑胶有限公司 | Take 3D printer of nozzle system |
| CN105965021A (en) * | 2016-07-13 | 2016-09-28 | 云南增材佳维科技有限公司 | Spray nozzle of tabletop low-melting-point metal three-dimensional printer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9821502B2 (en) * | 2015-09-11 | 2017-11-21 | Ut-Battelle, Llc | Multi-orifice deposition nozzle for additive manufacturing |
-
2017
- 2017-07-27 CN CN201710625824.1A patent/CN107175819B/en active Active
- 2017-07-27 CN CN201810533742.9A patent/CN108819245A/en not_active Withdrawn
- 2017-07-27 CN CN201810532323.3A patent/CN108437466A/en not_active Withdrawn
- 2017-07-27 CN CN201810532322.9A patent/CN108790148A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1810812B1 (en) * | 1999-09-21 | 2013-02-20 | Synventive Molding Solutions, Inc. | Manifold system having flow control |
| CN103876263A (en) * | 2014-03-21 | 2014-06-25 | 浙江大学 | Three-dimensional printer for printing liquid materials |
| CN205553224U (en) * | 2016-02-20 | 2016-09-07 | 苏州市慧通塑胶有限公司 | Take 3D printer of nozzle system |
| CN105965021A (en) * | 2016-07-13 | 2016-09-28 | 云南增材佳维科技有限公司 | Spray nozzle of tabletop low-melting-point metal three-dimensional printer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107175819A (en) | 2017-09-19 |
| CN108437466A (en) | 2018-08-24 |
| CN108819245A (en) | 2018-11-16 |
| CN108790148A (en) | 2018-11-13 |
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