CN107175819A - 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
- Publication number
- CN107175819A CN107175819A CN201710625824.1A CN201710625824A CN107175819A CN 107175819 A CN107175819 A CN 107175819A CN 201710625824 A CN201710625824 A CN 201710625824A CN 107175819 A CN107175819 A CN 107175819A
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- China
- Prior art keywords
- flow control
- control body
- wall
- extrusion
- guiding tube
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Classifications
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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
- 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]
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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
- 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
Abstract
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 with supportive body, supportive body lower end is connected with shower nozzle, shower nozzle includes the material guiding tube for being used to convey consumptive material and arrange with material storage pipe coaxial line, material guiding tube is slidably socketed with material storage pipe and material guiding tube can be slided along own axes, thermal source is provided with supportive body and the consumptive material being delivered to by material storage pipe in material guiding tube can be heated to molten state by thermal source, shower nozzle can extrude the molten state consumptive material conveyed by material guiding tube to print job face, shower nozzle also includes extrusion outer wall, flow control body, the inwall of flow control body and extrusion outer wall can be in the change of extrusion capacity to be coordinated or disengaged position, 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 control accuracy is high, can significantly reduce 3D printer in the time needed for the relatively low object of printing precision.
Description
Technical field
The present invention relates to a kind of 3D printer, and in particular to a kind of flow automatic diameter changing 3D printing extruder head.
Background technology
3D printing technique brings great convenience for human lives, and 3D printing technique has in terms of food, building, medical science
It is widely applied, its manufacture to complex part has big advantage, and 3D printer can pass through the cooperation with computer, lathe
Complicated workpiece is manufactured 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 is in printing workpiece fabrication, and the extrusion radius of extrusion is changeless, when beating
When printing workpiece and needing bigger extrusion capacity with extrusion radius, existing extrusion can not change its extrusion capacity according to the need for workpiece
With extrusion radius.
The content 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 extruded in a kind of print procedure
Printer extruder head, and the present invention has the function for the extrusion radius that automatically switches according to extrusion capacity.
To realize 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 being provided with supportive body, supportive body for storing printing
The material storage pipe of consumptive material, supportive body lower end is connected with shower nozzle, shower nozzle include being used for conveying consumptive material and with material storage pipe coaxial line cloth
The material guiding tube put, material guiding tube is slidably socketed with material storage pipe and material guiding tube can be slided along own axes, is provided with supportive body
The thermal source and consumptive material being delivered to by material storage pipe in material guiding tube can be heated to molten state by thermal source, shower nozzle will can be conveyed by material guiding tube
Molten state consumptive material extrude to print job face, shower nozzle also include extrusion outer wall, flow control body, flow control body with extrusion
The inwall of mouth outer wall can be in the change of extrusion capacity to be coordinated or disengaged position, and adjusts the extrusion bore of extrusion outer wall.
The further improvement of above-mentioned technical proposal.
Extrusion outer wall, flow control body are coaxially disposed in round table-like and extrusion outer wall close to material storage pipe side respectively
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
Measure the column block sealing matching of control volume and the bus of extrusion outer wall and the bus of flow control body are parallel, extrusion outer wall
It is provided with cavity and cavity can stores 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
The inwall and flow control body for exporting outer wall can be set along own axes closer or far from extrusion outer wall on flow control body
There are some 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 with material guiding tube, the diameter of the first material guide hole is less than the extrusion half of extrusion outer wall
Footpath, circumferentially disposed and second material guide hole axis of second material guide hole along flow control body is perpendicular to the side of flow control body
And second material guide hole connected with material guiding tube；When consumptive material extrusion capacity is smaller, shower nozzle is in first state, and flow control body is by gravity
Flow control body, which is applied, with consumptive material at the second material guide hole makes pressure of the flow control body away from extrusion outer wall and consumptive material pair
The component of its pressure vertical direction is less than flow control body self gravitation, and now flow control body and extrusion outer wall inwall is tight
Closely connected to close, extrusion matches with the bottom surface of flow control body and extrudes the radius that radius is the first material guide hole；When consumptive material extrusion
When measuring larger, shower nozzle is in the second state, and consumptive material is more than flow control body to the pressure of flow control body in vertical direction component
Self gravitation, now flow control body moved along own axes to the direction away from extrusion outer wall inwall, flow control body with
There is contact gap between extrusion outer wall inwall, molten state consumptive material is discharged by the first material guide hole, the second material guide hole respectively, melting
State consumptive material moves to extrusion, molten state consumptive material after the discharge of the second material guide hole along flow control body after the discharge of the first material guide hole
Moved with the gap of extrusion outer wall to extrusion, the first material guide hole, the consumptive material of the second material guide hole discharge collaborate at extrusion
And there is extrusion to extrude to print job face.
The further improvement of above-mentioned technical proposal.
The threaded connector that shower nozzle and supportive body can be fixed, threaded connector are provided between shower nozzle and supportive body
Upper end be connected with supportive body, the extrusion outer wall connection of the lower end of threaded connector and shower nozzle and threaded connector be with squeezing
Avoidance chamber is formed between outlet outer wall.
The further improvement of above-mentioned technical proposal.
The bullet for making flow control body be located remotely from each other with 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 ensures that flow control body is with squeezing in the first state
The contact gap for exporting outer wall is zero, prevents what consumptive material under first state from applying to flow control body to make it away from extrusion outer wall
Extrusion stress is more than the self gravitation of flow control body, it is ensured that first state flow control body does not occur de- with extrusion outer wall
From and ensure that extrusion extrude consumptive material when stability.
The further improvement of above-mentioned technical proposal.
Second material guide hole is along the circumferential uniform intervals distribution of flow control body and adjacent second material guide hole setting height(from bottom) is identical；
The component phase of molten state consumptive material in second material guide hole to the pressure of flow control body in the horizontal direction is made using the layout type
Mutually balance, can prevent the pressure that molten state consumptive material is produced from causing the displacement of flow control body radially.
A kind of flow automatic diameter changing 3D printing extrusion method, its step includes：
S1. switch on power, the consumptive material in material guiding tube is heated to molten state, molten state consumptive material edge by the thermal source in supportive body
The axis of material guiding tube flows to flow control body direction；
S2. under first state, the inwall of extrusion outer wall is matched with flow control body sealing, due to extrusion outer wall, flow control
It is close that body processed is coaxially arranged with cylindrical outer wall, flow control body in round table-like and extrusion outer wall close to material storage pipe side respectively
Material storage pipe side is coaxially arranged with column block, and the cylindrical outer wall of extrusion outer wall is matched simultaneously with the column block sealing of flow control body
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 store stream
Control volume is measured, the bottom of extrusion outer wall is provided with extrusion and extrusion is matched with the bottom surface of flow control body, flow control
Body processed is fixedly connected with the exhaust end of material guiding tube, and flow control body is coaxially socketed on the inwall of extrusion outer wall and flow is controlled
Body can be provided with some material guide holes, the material guide hole bag along own axes closer or far from extrusion outer wall on flow control body
Include the first material guide hole, the second material guide hole, the first material guide hole be coaxially disposed in the bottom of flow control body and the first material guide hole with
Material guiding tube is connected, 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 body
Circumferentially disposed and the second material guide hole axis connected perpendicular to the side of flow control body and the second material guide hole with material guiding tube；
Now, the pressure that molten state consumptive material controls flow side to apply sensing flow control body axis is less than in the component of vertical direction
Flow control body self gravitation, molten state consumptive material is extruded to print job face after being discharged from material guiding tube by the first material guide hole；
S3. when printing precision reduction, extrusion capacity are improved needed for workpiece, material is drawn in the extrusion pressure increase of material storage pipe extrusion consumptive material
The molten state consumptive material motion stress increase of way train, the sensing flow that molten state consumptive material is produced to flow control body side is controlled
The pressure of body axis increase and point to the pressure of flow control body axis the component of vertical direction be more than flow control body from
Body gravity, flow control body is made in the pressure for pointing to flow control body axis by flow control body surface that molten state consumptive material is produced
Under, axis of the flow control body along material guiding tube is away from formation between extrusion outer wall and flow control body and extrusion outer wall
The material guiding tube being secured to is drawn in the space for being available for molten state consumptive material to pass through, and flow control body motion process synchronously to transport
It is dynamic；
S4. in above-mentioned steps S3, the molten state consumptive material positioned at material guiding tube is arranged by the first material guide hole, the second material guide hole respectively
Go out, the consumptive material of the second material guide hole discharge is by the gap between flow control body and extrusion outer wall and the discharge of the first material guide hole
Molten state consumptive material collaborates and extruded by extrusion to print job face.
More optimize, in above-mentioned step S1, bin stock pipe outer wall, which is provided with, to be radiated 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 too high to cause consumptive material in material storage pipe
Damage, soften.
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 delayed heat again transmission from material guiding tube to material storage pipe, it is ensured that storage consumptive material is not because temperature is too high and soft in material storage pipe
Change.
It is more excellent, be provided with 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, the sensing flow control body axis produced when molten state consumptive material to flow control body side
Pressure increase and point to the pressure of flow control body axis and be more than flow control body self gravitation in the component of vertical direction
With spring force make a concerted effort when, flow control body can along its own axis runout extrusion outer wall, and cause flow control body with
Formed between extrusion outer wall and be available for the space that molten state consumptive material is passed through；Spring ensure that the interior of extrusion outer wall under first state
Sealing between wall and flow control body is matched, and annular spacing groove makes flow control body in the axial direction in moving process, spring
Do not occur along the circumferential displacement of flow control body and ensure that spring is not caught between flow control body and extrusion outer wall, it is ensured that
The stability of stability and the working condition switching of printing.
Compared with prior art, the progress of acquirement and advantage are that the present invention enters according to consumptive material flow velocity, flow to the present invention
The adaptivity adjustment of row opening range, and control accuracy is high, can significantly reduce 3D printer in the relatively low object institute of printing precision
The time needed.
Brief description of the drawings
In order to illustrate the embodiments of the present invention more clearly, the required accompanying drawing used in embodiment will be done simply below
Introduce, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ordinary skill people
For member, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying 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 shower nozzle 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 view of the invention.
Fig. 7 is the second state shower nozzle schematic diagram of the invention.
The label meaning of each in figure is：10. shower nozzle, 11. material guiding tubes, 12. extrusion outer walls, 13. flow control bodies, 14.
Threaded connector, 15. springs；
20. supportive body；
30. material storage pipe.
Embodiment
With reference to the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Ground is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on this hair
Embodiment in bright, those of ordinary skill in the art are not under the premise of creative work is made, the every other reality obtained
Example is applied, the scope of the present invention is belonged to.
Referring to accompanying drawing 1,2, a kind of flow automatic diameter changing 3D printing extruder head includes being used to supporting and connecting whole mechanism
The material storage pipe 30 for storing printing consumables is provided with supportive body 20, supportive body 20, the lower end of supportive body 20 is connected with
Shower nozzle 10, shower nozzle 10 includes the material guiding tube 11 for being used to convey 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, thermal source is provided with supportive body 20 and thermal source can be by by bin stock
The consumptive material that pipe 30 is delivered in material guiding tube 11 is heated to molten state, and shower nozzle 10 can squeeze the molten state consumptive material conveyed by material guiding tube 11
Print job face is depressed into, the screw thread that shower nozzle 10 and supportive body 20 can be fixed by being provided between shower nozzle 10 and supportive body 20 connects
Fitting 14, shower nozzle 10 also includes extrusion outer wall 12, flow control body 13, the inwall of flow control body 13 and extrusion outer wall 12
It can be in and coordinate or disengaged position with the change of extrusion capacity；Coordinate when the inwall of flow control body 13 and extrusion outer wall 12 is in
State, extrusion is in first state, i.e., small-bore, small extrusion capacity 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 capacity state.
More specifically, the upper end of threaded connector 14 be connected with supportive body 20, the lower end of threaded connector 14 and spray
First 10 extrusion outer wall 12 connects and avoidance chamber is formed between threaded connector 14 and extrusion outer wall 12；When flow control
When the inwall of body 13 processed and extrusion outer wall 12 is in disengaged position, the avoidance between threaded connector 14 and extrusion outer wall 12
Chamber can provide for flow control body 13 and sufficiently avoid space, prevent from causing because avoiding insufficient space flow control body 13 with squeezing
The inwall of outlet outer wall 12 can not depart from.
More specifically, extrusion outer wall 12, flow control body 13 are in round table-like respectively and extrusion outer wall 12 is close
The side of threaded connector 14 is coaxially arranged with cylindrical outer wall, flow control body 13 and is coaxially arranged with close to the side of threaded connector 14
Column block, the cylindrical outer wall of extrusion outer wall 12 is matched with the column block sealing 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 inwall and stream of extrusion outer wall 12
Some material guide holes can be provided with along own axes closer or far from extrusion outer wall 12 on flow control body 13 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 connected with 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
Circumferentially disposed and second material guide hole axis of the material guide hole along flow control body 13 perpendicular to the side of flow control body 13 and
Second material guide hole is connected with material guiding tube 11；When consumptive material extrusion capacity is smaller, shower nozzle is in first state, and flow control body 13 is by weight
Power applies with consumptive material at the second material guide hole to flow control body 13 makes pressure of the flow control body 13 away from extrusion outer wall 12 simultaneously
And consumptive material is less than the self gravitation of flow control body 13 to the component of its pressure vertical direction, now flow control body 13 and extrusion
The contact gap of the inwall of outer wall 12 is zero, and extrusion matches with the bottom surface of flow control body 13 and extrudes radius for the first guide
The radius in hole, when consumptive material extrusion capacity is larger, shower nozzle 10 is in the second state, and consumptive material is to the pressure of flow control body 13 vertical
Direction component is more than the self gravitation of flow control body 13, and now flow control body 13 is along own axes to away from extrusion outer wall 12
, there is contact gap, molten state consumptive material difference between flow control body 13 and the inwall of extrusion outer wall 12 in the direction motion of inwall
Discharged by the first material guide hole, the second material guide hole, molten state consumptive material moves to extrusion, molten state after the discharge of the first material guide hole and consumed
Material is moved after being discharged from the second material guide hole along the gap of flow control body and extrusion outer wall 12 to extrusion, the first material guide hole,
The consumptive material of second material guide hole discharge collaborates at extrusion and has extrusion to extrude to print job face.
More optimize, the second material guide hole is distributed and adjacent second material guide hole along the circumferential uniform intervals of flow control body 13
Setting height(from bottom) 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 is mutually balanced, and can prevent the pressure that molten state consumptive material is produced from causing the displacement of flow control body 13 radially.
More perfect, being provided between flow control body 13 and threaded connector 14 makes flow control body 13 connect with screw thread
The spring 15 that fitting 14 is located remotely from each other；Spring 15 is active force and the guarantee that flow control body 13 provides 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 that consumptive material is to flow under first state
What control volume 13 applied makes it away from the self gravitation that the extrusion stress of extrusion outer wall 12 is more than flow control body 13, it is ensured that the
One state flow control body 13 does not occur to depart from and ensure that stability of the extrusion when extruding consumptive material with extrusion outer wall 12.
More optimize, described material storage pipe 30 includes that the material storage pipe of consumptive material can be stored, if material storage pipe wall coaxial is provided with
Do annular fin and adjacent annular fin is distributed in uniform intervals；Consumptive material in material storage pipe can be entered using the layout type
Row radiating, prevents consumptive material in material storage pipe by the heat transfer of material guiding tube 11 and causes temperature is too high to cause damaging for consumptive material in material storage pipe
Bad, softening.
Further, material guiding tube 11 is socketed on outside the thermal source set in supportive body 20；It can extend by this way and draw
Consumptive material is thermally formed and consumptive material is fully melted to molten state in expects pipe 11, prevents because heating is uneven or it is insufficient to heat
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 transmission of the heat from material guiding tube 11 to material storage pipe 30, it is ensured that the work temperature of material storage pipe 30
Spend and prevent its temperature too high and cause 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 the side of threaded connector 14
Position groove can store spring 15；When flow control body 13 is moved 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 cause flow control body 13
In the pressure by molten state consumptive material, it is impossible to moved along material guiding tube axis direction.
A kind of flow automatic diameter changing 3D printing extrusion method, its step includes：
S1. switch on power, the consumptive material in material guiding tube 11 is heated to molten state, molten state consumption by the thermal source in supportive body 20
Axis of the material along material guiding tube 11 flows to the direction of flow control body 13；
S2. under first state, the inwall of extrusion outer wall 12 is matched with the sealing of flow control body 13, and molten state consumptive material is to flow control
The pressure that the side of system 13 applies the sensing axis of flow control body 13 is heavy less than flow control body 13 itself in the component of vertical direction
Power, molten state consumptive material is extruded to print job face after being discharged from material guiding tube 11 by the first material guide hole；
S3. when printing precision reduction, extrusion capacity are improved needed for workpiece, the extrusion pressure increase of the extrusion consumptive material of material storage pipe 30 is drawn
The molten state consumptive material motion stress increase of transport in expects pipe 11, the sensing stream that molten state consumptive material is produced sideways to flow control body 13
The pressure of the amount axis of control volume 13 increases and points to the pressure of the axis of flow control body 13 is more than stream in the component of vertical direction
The self gravitation of control volume 13 is measured, flow control body 13 points to flow control what molten state consumptive material was produced by the surface of flow control body 13
Under the pressure effect of the axis of body 13 processed, axis of the flow control body 13 along material guiding tube 11 is away from extrusion outer wall 12 and flow control
Formed between body 13 and extrusion outer wall 12 processed and be available for the space that molten state consumptive material is passed through, and the motion process of flow control body 13
The middle material guiding tube 11 being secured to that draws is synchronized with the movement；
S4. in above-mentioned steps S3, the molten state consumptive material positioned at material guiding tube 11 is arranged by the first material guide hole, the second material guide hole respectively
Go out, the consumptive material of the second material guide hole discharge is arranged by the gap between flow control body 13 and extrusion outer wall 12 with the first material guide hole
The molten state consumptive material gone out collaborates and extruded by extrusion to print job face.
More optimize, in above-mentioned step S1, the annular fin of bin stock pipe outer wall can be entered to consumptive material in material storage pipe
Row radiating, prevents consumptive material in material storage pipe by the heat transfer of material guiding tube 11 and causes temperature is too high to cause damaging for consumptive material in material storage pipe
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
Cross annular thermal boundary delayed heat again transmission from material guiding tube 11 to material storage pipe 30, it is ensured that storage consumptive material is not because of temperature in material storage pipe 30
Spend high and soften.
More excellent, in above-mentioned steps S3, being provided between threaded connector 14 and flow control body 13 makes threaded connection
The spring 15 that part 14 is located remotely from each other with flow control body 13, the sensing stream produced sideways to flow control body 13 when molten state consumptive material
The pressure of the amount axis of control volume 13 increases and points to the pressure of the axis of flow control body 13 is more than stream in the component of vertical direction
Measure when making a concerted effort of the self gravitation of control volume 13 and the elastic force of spring 15, flow control body 13 can be along outside its own axis runout extrusion
Wall 12, and make it that formation is available for the space that molten state consumptive material is passed through between flow control body 13 and extrusion outer wall 12；Spring 15
It ensure that the sealing under first state between the inwall of extrusion outer wall 12 and flow control body 13 is matched, annular spacing groove makes stream
Amount control volume 13 is in the axial direction in moving process, and spring 15 does not occur along the circumferential displacement of flow control body 13 and ensures spring
15 are not caught between flow control body 13 and extrusion outer wall 12, it is ensured that it is steady that the stability and working condition of printing switch
It is qualitative.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention；
A variety of modifications to these embodiments will be apparent for those skilled in the art, defined in the present invention
General Principle can not depart from the present invention spirit or scope in the case of, realize in other embodiments.Therefore, originally
Invention will not be defined to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty
Consistent most wide scope.
Claims (5)
1. a kind of flow automatic diameter changing 3D printing extruder head includes supportive body, it is characterised in that use is provided with supportive body
In the material storage pipe of storage printing consumables, supportive body lower end is connected with shower nozzle, and shower nozzle includes being used to convey consumptive material and and bin stock
The material guiding tube of pipe coaxial line arrangement, material guiding tube is slidably socketed with material storage pipe and material guiding tube can be slided along own axes, support master
Be provided with thermal source in vivo and the consumptive material being delivered to by material storage pipe in material guiding tube can be heated to molten state by thermal source, shower nozzle can by by
The molten state consumptive material of material guiding tube conveying is extruded to print job face, and shower nozzle also includes extrusion outer wall, flow control body, flow control
The inwall of body processed and extrusion outer wall can be in the change of extrusion capacity to be coordinated or disengaged position, and adjusts squeezing for extrusion outer wall
Go out bore.
2. a kind of flow automatic diameter changing 3D printing extruder head according to claim 1 includes supportive body, it is characterised in that
Extrusion outer wall, flow control body are coaxially arranged with outside column in round table-like and extrusion outer wall close to material storage pipe side respectively
Wall, flow control body are coaxially arranged with column block, the cylindrical outer wall and flow control body of extrusion outer wall close to material storage pipe side
Column block sealing matching and the bus of extrusion outer wall and the bus of flow control body are parallel, extrusion outer wall sets free
Chamber and cavity can store flow control body, the bottom of extrusion outer wall is provided with extrusion and extrusion and flow control body
Bottom surface matching, flow control body is fixedly connected with the exhaust end of material guiding tube, and flow control body is coaxially socketed on extrusion outer wall
Inwall and flow control body can be provided with some lead along own axes closer or far from extrusion outer wall on flow control body
Expect hole, 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
And the first material guide hole is connected with material guiding tube, the diameter of the first material guide hole is less than the extrusion port radius of extrusion outer wall, and second leads
Circumferentially disposed and second material guide hole axis of the hole along flow control body is expected perpendicular to the side of flow control body and second is led
Material hole is connected with material guiding tube.
3. a kind of flow automatic diameter changing 3D printing extruder head according to claim 2 includes supportive body, it is characterised in that
Be provided with the threaded connector that shower nozzle and supportive body can be fixed between shower nozzle and supportive body, the upper end of threaded connector with
The extrusion outer wall connection of supportive body connection, the lower end of threaded connector and shower nozzle and threaded connector and extrusion outer wall
Between be formed with avoidance chamber.
4. a kind of flow automatic diameter changing 3D printing extruder head according to claim 3 includes supportive body, it is characterised in that
The spring for making flow control body be located remotely from each other with threaded connector is provided between flow control body and threaded connector.
5. a kind of flow automatic diameter changing 3D printing extruder head according to claim 2 includes supportive body, it is characterised in that
Second material guide hole is along the circumferential uniform intervals distribution of flow control body and adjacent second material guide hole setting height(from bottom) is identical.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810533742.9A CN108819245A (en) | 2017-07-27 | 2017-07-27 | More bore stereoforming methods for increasing material manufacturing |
| CN201810532323.3A CN108437466A (en) | 2017-07-27 | 2017-07-27 | 3D printing extruder head applied to increasing material manufacturing flow automatic diameter changing |
| 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 |
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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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| CN201810532323.3A Division CN108437466A (en) | 2017-07-27 | 2017-07-27 | 3D printing extruder head applied to increasing material manufacturing flow automatic diameter changing |
| CN201810533742.9A Division CN108819245A (en) | 2017-07-27 | 2017-07-27 | More bore stereoforming methods for increasing material manufacturing |
| CN201810532322.9A Division CN108790148A (en) | 2017-07-27 | 2017-07-27 | More bore stereo shaping extruder heads for increasing material manufacturing |
Publications (2)
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| CN107175819A true CN107175819A (en) | 2017-09-19 |
| CN107175819B CN107175819B (en) | 2019-03-22 |
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| CN201810532323.3A Withdrawn CN108437466A (en) | 2017-07-27 | 2017-07-27 | 3D printing extruder head applied to increasing material manufacturing flow automatic diameter changing |
| CN201710625824.1A Active CN107175819B (en) | 2017-07-27 | 2017-07-27 | A kind of flow automatic diameter changing 3D printing extruder head |
| CN201810532322.9A Withdrawn CN108790148A (en) | 2017-07-27 | 2017-07-27 | More bore stereo shaping extruder heads for increasing material manufacturing |
| CN201810533742.9A Withdrawn CN108819245A (en) | 2017-07-27 | 2017-07-27 | More bore stereoforming methods for increasing material manufacturing |
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| CN201810532323.3A Withdrawn 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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| CN201810532322.9A Withdrawn CN108790148A (en) | 2017-07-27 | 2017-07-27 | More bore stereo shaping extruder heads for increasing material manufacturing |
| CN201810533742.9A Withdrawn CN108819245A (en) | 2017-07-27 | 2017-07-27 | More bore stereoforming methods for increasing material manufacturing |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582792A (en) * | 2018-03-27 | 2018-09-28 | 共享智能铸造产业创新中心有限公司 | A method of printing extruded stock inertia compensation for FDM |
| CN110181810A (en) * | 2019-07-03 | 2019-08-30 | 常州轻工职业技术学院 | A kind of 3D printing graphene composite material spray head of flow-controllable |
| WO2020087359A1 (en) * | 2018-10-31 | 2020-05-07 | 黄卫东 | Apparatus for 3d printing and control method thereof |
| CN112373026A (en) * | 2020-10-26 | 2021-02-19 | 华东数字医学工程研究院 | Reducing pipe printing nozzle and reducing pipe printing method |
| WO2021196858A1 (en) * | 2020-04-03 | 2021-10-07 | 苏州美梦机器有限公司 | Apparatus for 3d printing and control method therefor |
| CN113751727A (en) * | 2021-08-26 | 2021-12-07 | 南方科技大学 | 3D prints shower nozzle and 3D printing device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109397687B (en) * | 2018-11-27 | 2020-12-01 | 安徽工程大学 | Bore adjustable 3D print pen |
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- 2017-07-27 CN CN201810532322.9A patent/CN108790148A/en not_active Withdrawn
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| US20170072614A1 (en) * | 2015-09-11 | 2017-03-16 | Ut-Battelle, Llc | Multi-orifice deposition nozzle for additive manufacturing |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108582792A (en) * | 2018-03-27 | 2018-09-28 | 共享智能铸造产业创新中心有限公司 | A method of printing extruded stock inertia compensation for FDM |
| 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 |
| WO2020087359A1 (en) * | 2018-10-31 | 2020-05-07 | 黄卫东 | Apparatus for 3d printing and control method thereof |
| CN111386187A (en) * | 2018-10-31 | 2020-07-07 | 黄卫东 | Apparatus for 3D printing and control method thereof |
| JP2021505424A (en) * | 2018-10-31 | 2021-02-18 | ▲衛▼▲東▼ 黄 | 3D printing equipment and its control method |
| US11433612B2 (en) | 2018-10-31 | 2022-09-06 | Weidong Huang | Device for 3D printing and control method thereof |
| CN111386187B (en) * | 2018-10-31 | 2022-11-29 | 黄卫东 | Apparatus for 3D printing and control method thereof |
| CN110181810A (en) * | 2019-07-03 | 2019-08-30 | 常州轻工职业技术学院 | A kind of 3D printing graphene composite material spray head of flow-controllable |
| WO2021196858A1 (en) * | 2020-04-03 | 2021-10-07 | 苏州美梦机器有限公司 | Apparatus for 3d printing and control method therefor |
| CN112373026A (en) * | 2020-10-26 | 2021-02-19 | 华东数字医学工程研究院 | Reducing pipe printing nozzle and reducing pipe printing method |
| CN113751727A (en) * | 2021-08-26 | 2021-12-07 | 南方科技大学 | 3D prints shower nozzle and 3D printing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108790148A (en) | 2018-11-13 |
| CN107175819B (en) | 2019-03-22 |
| CN108437466A (en) | 2018-08-24 |
| CN108819245A (en) | 2018-11-16 |
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