CN209718049U - Extruded type ceramic false tooth 3D printer - Google Patents
Extruded type ceramic false tooth 3D printer Download PDFInfo
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- CN209718049U CN209718049U CN201920010197.5U CN201920010197U CN209718049U CN 209718049 U CN209718049 U CN 209718049U CN 201920010197 U CN201920010197 U CN 201920010197U CN 209718049 U CN209718049 U CN 209718049U
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- mixing bar
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- bar
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Abstract
The utility model is a kind of extruded type ceramic false tooth 3D printer.The composition of the device includes pedestal, Y-axis guide rail, X-axis guide rail, column, Z axis guide rail, fixture, screw pump, barrel, pipeline, spray head and forming board；Wherein, column is fixed with by articulation piece on rear side of the middle part of pedestal, the top of column is fixed with Z axis guide rail, sliding block in Z axis guide rail is fixed with fixture, there are three through-holes for distribution side by side on the boss of fixture lower end, the hole in middle position is fixed with screw pump, and the side position hole of two sides is respectively equipped with a barrel, and two barrel discharge ports are connect with the feeding inlet of screw pump two sides respectively by pipeline；The bottom of screw pump is equipped with spray head.The utility model solves existing plunger type and squeezes out " cross and accumulate " for being easy to appear in discontinuous print procedure existing for 3D printer, " owing accumulation (also referred to as wire drawing) " phenomenon, and at low cost, the period is short, and stock utilization is up to 90% or more.
Description
Technical field
The utility model relates to a kind of dental hospital or the preparation facilities of ceramic false tooth used in examining, according to of people
Property demand, can be gone out with quick Fabrication and the similar ceramic false tooth of natural teeth height.
Background technique
Currently, tooth defect is the common disease of gear division in China.When defect occurs in the tooth of people, artificial tooth is used to generation
For the tooth of defect, the function of natural teeth is exercised.In modern day life, with mentioning for social development living standard
Height, the performance that people do not require nothing more than artificial tooth is good, more requires beautiful natural.Tooth is divided into enamel, dentine and dental pulp three parts,
Different piece has different structures and the pressure born is not also identical.Intensity, pattern, the dimensional accuracy of zirconium oxide ceramic false tooth
It requires very high, is usually made of CNC cutting technology, but in the production process with permeability, the material of entire artificial tooth is identical,
Structure is single, although can satisfy natural teeth of the people to the functional requirement of ceramic false tooth, with human body to a certain extent
Structure has certain gap, and many materials are cut out when machining, leads to the expensive of all-ceramic crown, but also may
There is internal fissure caused by cutting force in artificial tooth, lead to low efficiency, far from meeting ever-increasing market demand.
In conclusion problem of the existing technology is: due to ceramic false tooth and natural teeth in material, structure
Gap；Printing complex parts, realize in discontinuous print procedure, due to most extruded materials all have it is compressible
Property, the extrusion pressure of material is difficult to measure and is rationally controlled, therefore, it is difficult to avoid the generation of " salivation phenomenon ".In this way,
Phenomena such as waste of material is serious, the process-cycle is long, low efficiency will be generated, is caused expensive.
Utility model content
The purpose of this utility model is the deficiency of processing technology to be made for existing ceramic false tooth, and can produce
More close to the ceramic false tooth of human body natural tooth structure, a kind of extruded type ceramic false tooth 3D printing device is provided.The device will
Micro screw pump is used for ceramic false tooth 3D printing, and by the improvement to classic screw pump rotor, stator structure, can not only
Quick Fabrication goes out intensity height, dimensional accuracy height, material mixture ratio and internal structure and the substantially identical ceramics justice of natural teeth
Tooth, moreover it is possible to make the stock utilization of ceramic false tooth be up to 90% or more, no internal fissure, cost is relatively low, and the period is short, meets people's
Personalized customization requirement.
The technical scheme adopted by the utility model to solve the technical problem is as follows:
A kind of extruded type ceramic false tooth 3D printer, composition are led including pedestal, Y-axis guide rail, X-axis guide rail, column, Z axis
Rail, fixture, screw pump, barrel, pipeline, spray head and forming board；
Wherein, column is fixed with by articulation piece on rear side of the middle part of pedestal, the top of column is fixed with Z axis guide rail, and Z axis is led
Sliding block on rail is fixed with fixture, on the boss of fixture lower end distribution there are three or five through-holes, the hole in middle position be fixed with
Screw pump, remaining side of surrounding position hole are respectively equipped with a barrel, and each barrel discharge port is by pipeline respectively and on screw pump
Feeding inlet connection；The bottom of screw pump is equipped with spray head；
On the pedestal, the arranged on left and right sides of column is respectively fixed with a Y-axis guide rail, and 2 Y-axis guide rails are parallel；X-axis is led
The sliding block that the bottom at rail both ends is separately fixed on the sliding block in 1 Y-axis guide rail, in X-axis guide rail is fixed with profiled sheeting, profiled sheeting
Positioned at the lower part of spray head；
The composition of the screw pump includes screw pump rotor, screw pump stator and upper housing, servo motor in upper housing
Drive shaft be connected with the center-pole of the mixing part of screw pump rotor by shaft coupling；The lower outlet of screw pump stator and spray head
Entrance be connected；
The screw pump rotor is divided into two parts, and top half is mixing part, and lower half portion is feed section；
The mixing part is center bar and the mixing bar for being distributed in its surrounding；The center-pole is round bar；It is described
Mixing bar be divided into reverse mixing bar, vertical mixing bar and forward three kinds of mixing bar；The reverse mixing bar and center-pole axis
Line upwardly direction is at 45 °, and vertical mixing bar and center rod axis upwardly direction are in 90 °, forward mixing bar and center-pole axis
Line upwardly direction is at 135 °；The feed section is the screw rod with eccentricity；
The reverse mixing bar, vertical mixing bar are identical with the diameter of forward mixing bar, are uniformly distributed on center-pole,
Quantity and spacing are also identical；Reverse mixing bar, vertical mixing bar and forward vertical range of the end of mixing bar to center-pole
It is identical；
Wherein, length ratio is mixing part: feed section=4:5, the length of three kinds of mixing bar distributed areas on center-pole
Spend ratio are as follows: reverse mixing bar: vertical mixing bar: forward mixing bar=1.414:1:1.414；
The length of rotor of length and screw pump of the screw pump stator is identical, by outer rigid housing, and is mounted on just
Property shell in lower part rubber inner wall constitute, the length of rubber inner wall and the length of feed section are identical；Stator interior lower end with
Screw pump rotor lower end feed section interference fit；
The diameter of the mixing bar is 0.2mm, and the vertical range to center-pole is 0.8mm；The diameter of center-pole is
1.56mm；
The eccentricity of the screw rod is 0.28mm, diameter 1.56mm；
The diameter of the spray head is 0.41mm.
The substantive distinguishing features of the utility model are as follows:
Micro screw pump is used for ceramic false tooth 3D printing by the utility model (1), and screw pump is made full use of persistently to be fed, pressure
The constant feature of power, guarantees going on smoothly for discontinuous print procedure, avoids " salivation phenomenon ".(existing 3D printer does not have
Useful screw pump can have " salivation phenomenon " as extrusion feeding mechanism, and in print procedure, be difficult to control) (2) improvement
Classic screw pump rotor structure: increasing the mixing bar of different angle above rotor, can make two kinds or more into screw pump
The material of kind different ratio is uniformly mixed, and realization is printed in functionally gradient of both material and structure.(3) classic screw is improved
Pump stator: top half is the regular tubular of rigidity, realizes mixing process jointly with mixing bar；It is rigid material on the outside of lower half portion
Material, inside are rubber material, realize and are interference fitted with rotor lower half portion, realize feeding process, and prevent from leaking.
The utility model has the beneficial effects that are as follows:
The utility model is squeezed out using micro screw pump feeding, is solved non-existing for existing plunger type extrusion 3D printer
" cross and accumulate ", " owing accumulation (also referred to as the wire drawing) " phenomenon being easy to appear in continuous print procedure, can control in time and squeeze out silk
Start and stop；The feeding inlet of screw pump can select using number to be 2 or 4 according to actual needs, intracavitary by turning in stator type
Son realizes uniform mixing and stablizes feeding, finally can be realized the printing of more material gradients or the homogenous material of different materials proportion
The structure gradient of different densities prints；Can be with Rapid Prototyping Manufacturing Precision height, intensity is high, and material composition is natural with human body with structure feature
Tooth model height is consistent, meets the beautiful ceramic false tooth of the health of people's individual demand, and at low cost, the period is short, material benefit
It is high (reaching 90% or more) with rate, while the requirement to technical staff is reduced, also largely reduce participation production
Process personnel amount.
Detailed description of the invention:
Here is the further explanation to the utility model in conjunction with the accompanying drawings and embodiments.
Fig. 1 is the overall structure figure of the utility model；
Fig. 2 is screw pump rotor structure chart in the utility model；
Fig. 3 is the utility model screw pump rotor fragmentary cross-sectional view.
Fig. 4 is the structure chart of screw pump；
Wherein, 1. pedestal, 2. .Y axis rail, 3. .X axis rail, 4. column, 5. .Z axis rail, 6. fixture, 7. screw rod
It pumps, 8. barrel, 9. pipeline, 10. spray head,Forming board；
Reverse mixing bar,Vertical mixing bar,Forward mixing bar,Screw pump rotor feed section；Screw rod
Pump stator outer rigid housing,Screw pump stator inner rubber part,Screw pump rotor；Feeding inlet,Shaft coupling,
Servo motor；
Specific embodiment:
The structure of extruded type ceramic false tooth 3D printer described in the utility model as shown in Figure 1, include pedestal 1., Y-axis
Guide rail 2., X-axis guide rail 3., column 4., Z axis guide rail 5., fixture 6., screw pump 7., barrel 8., pipeline 9., spray head 10. and forming
Plate
Wherein, on rear side of the middle part of pedestal 1. 4. column is fixed with by articulation piece, the top of column 4. passes through 8 symmetrical cloth
5. the M3 bolt set is fixed with Z axis guide rail, Z axis guide rail 5. on sliding block be fixed with fixture 6. by 4 M3 bolts, fixture is 6.
There are three through-holes, the hole in middle position to be fixed with screw pump 7. for distribution side by side on the boss of lower end, and the side position hole of two sides is respectively installed
There is a barrel 8., 8. discharge port passes through the pipeline 9. feeding inlet with screw pump 7. two sides respectively to two barrelsConnection；Screw rod
10. pump bottom 7. is equipped with spray head that diameter is 0.41mm；
The pedestal 1. on, 2. the arranged on left and right sides of column 4. has respectively been bolted a Y-axis guide rail, 2 Y-axis
Guide rail is 2. parallel；The bottom at X-axis guide rail 3. both ends be separately fixed at 1 Y-axis guide rail 2. on sliding block on, X-axis guide rail 3. on
Sliding block is fixed with profiled sheetingProfiled sheetingPositioned at the lower part of spray head 10.；
The screw pump rotor is divided into two parts, and top half is mixing part, and lower half portion is feed section；
The mixing part is center bar and the mixing bar for being distributed in its surrounding；The center-pole is round bar；It is described
Mixing bar be divided into reverse mixing barVertical mixing barForward mixing barThree kinds；The reverse mixing barWith
Center rod axis upwardly direction is at 45 °, vertical mixing barIt is in 90 ° with center rod axis upwardly direction, forward mixing barWith center rod axis upwardly direction at 135 °；The feed section is the screw rod with eccentricity
The reverse mixing barVertical mixing barForward mixing barDiameter it is identical, on center-pole
Even distribution, quantity and spacing are also identical；Reverse mixing barVertical mixing barForward mixing barEnd to center-pole
Vertical range it is also identical；
Wherein, length ratio is mixing part: feed section=4:5, the length of three kinds of mixing bar distributed areas on center-pole
Spend ratio are as follows: reverse mixing barVertical mixing barForward mixing bar
The diameter of the mixing bar is 0.2mm, and the vertical range to center-pole is 0.8mm；The diameter of center-pole is
1.56mm；
The mixing bar quantity a little shares 39, and reverse mixing bar respectively has 4 circles, vertical mixing bar with forward mixing bar
There are 5 circles, every circle there are 3 mixing bars to be respectively distributed at 120 °, uniform crossover distribution between every circle mixing bar.Screw pump rotor material
Matter is 17-4PH hardening stainless steel, whole to be manufactured using metallurgy forming process for powder.
The eccentricity of the screw rod is 0.28mm, diameter 1.56mm；
In Fig. 3, the length of rotor of length and screw pump of the screw pump stator is identical, by outer rigid housingWith
It is mounted on the rubber inner wall of lower part in outer rigid housingIt constitutes, rubber inner wallLength it is identical as the length of feed section；It is fixed
Sub internal and screw pump rotorInterference fit；
The outer rigid housingIt is cylindrical case；Mixing bar and rigid cylindrical shellTop half match for gap
It closes, realizes uniform mixing；The lower half portion screw portion of rotor and the rubber inner wall interference of lower half portion inside cylindrical case are matched
It closes, prevents slurry from leaking.
The composition of the screw pump 7. includes screw pump rotor, screw pump stator and upper housing, upper housing as shown in Figure 4
Interior servo motorDrive shaft pass through shaft couplingIt is connected with the center-pole of the mixing part of screw pump rotor；Screw pump is fixed
The lower outlet of son is connected with the entrance of spray head 10.；
The screw pump feed inletIt is divided into left and right totally 2, it (can also be according to the different types of ceramic false tooth of printing more
Changing the outfit has the fixture of different number barrels, and increasing feed inlet number is 4) it is located at reverse mixing barThe upper housing of upper end
In the utility model, 2. 3. 5. structure composition is identical for X, Y, Z axis guide rail, is well-known device, by 1 42
Stepper motor, 1 shaft coupling, 1 one screw rods, 2 polished rods, 1 slide unit and 2 flanges are constituted, and the shape of fixture 6. is L shape,
It is the integrated product using the 3D printing of FDM technique.
The starting of the screw pump, stop operation, rotational speed regulation and input pressure are by the control connecting with screw pump
Device processed is completed.X, the movement of Y, Z guide rail belongs to well-known technique by the STM32 development board based on MARLIN firmware, using C language
Speech control: display touches drive module, is connected with display screen, completes input/display function；Stepper motor drive module, and it is each
Stepper motor on a guide rail is respectively connected with, and controls the movement of X, Y, Z guide rail；These modules are integrated on control panel, and corresponding
Hardware be connected, complete major function；Control panel is embedded in pan frontward end, convenient for observation operation.Barrel connected atmospheric pressure pump by
Its independent control is completed.
Double Y-axis guide rails be 2. fixed on pedestal 1. on, X-axis guide rail 3. be 2. connected, printing random layer process
In, it 2. with 3. links under the driving of 42 stepper motors, realizes each layer of printing, 5. Z axis guide rail is fixed on is connected with pedestal
Column 4. on, every to complete one layer of printing, 5. Z axis guide rail moves up a thickness, XY guide rail continues to print next layer；Gu
Determine mixing, feed device screw pump 7. with magazine barrel 8. be fixture 6., be 6. 7. 8. 6. fixed on Z entirely through fixture
Axis rail 5. on；7. top connects control cabinet to screw pump, realizes that the start and stop of screw pump and input pressure control；Air pump is managed by PC
8. top is connected with barrel, realizes feeding by providing atmospheric pressure；8. barrel passes through pipeline and extruded material is 9. sent into screw pump
7. uniform mixing is realized in screw pump, pressure constant output, extruded material spray head 10. in squeezed out with filament, it is final to print
Good product be fixed on X-axis guide rail 3. on acrylic board forming boardUpper printing-forming.
In the utility model, (1) printer is ceramic slurry extruded type printer, and ceramic slurry is non-newtonian fluid,
In extrusion process, the viscosity of slurry can change with the variation of shear rate, will affect the print quality of part in this way, should
Printer carries out feeding using screw rod pump configuration, and each inside slurry pressure of screw type chamber is almost unchanged, and screw-pump chamber is forward
The speed of passage and the flowing velocity of slurry, which are consistent, (there's almost no since slurry is compressed, screw-pump chamber is to being pushed forward
Move and the static immobilising phenomenon of ceramic slurry), it can be (viscous according to the rheological behavior of ceramic slurry by theoretical formula method
The relationship of degree and shear rate) corresponding screw rod revolution speed is calculated, make screw rod revolution speed and ceramic slurry viscosity shape
At the process of a dynamically adapting, the equipment debugging as caused by printed material replacement (rheological behavior of material changes) is reduced
Time solves the problems, such as in print procedure because mass defect occurs in printing part caused by ceramic slurry viscosity change.
The control section of the 3D printer is all the basic knowledge of single-chip microcontroller, can be wanted according to specific ceramic false tooth
Ask adjusting control.
For pipe stream, the flow of Power-law Fluid Laminar Through and the relationship of pressure drop meet following formula:
Q1The laminar flow for being power-law fluid in round tube；ΔPkFor slurry pressure drop in extruder head, R is round tube extruder head
Radius, L are extruder head length；N is the viscosity index (VI) of slurry, and K is the consistency coefficient of slurry, related with temperature, indicates shearing speed
RateWhen viscosity, the two can measure by experiment.
For steady extruding process, screw rod pump discharge pressure is equal to extruder head inlet pressure:
ΔPk=Pi-P0,Pi=Pin+Z·ΔP (2)
PiFor extruder head inlet pressure, P0For atmospheric pressure, PinFor screw rod pump inlet pressure.
Sealed chamber elapses forward the total volume of slurry in unit time, is determined by screw pump seal chamber volume with rotor speed
It is fixed:
Q2=4edT Ω (3)
E is screw pump eccentricity, and d is screw pump internal diameter, and T is screw pump screw pitch, and Ω is screw rod revolution speed.
Tubular extruder head flow: Q3=π R2·v (4)
V is the mean flow rate of slurry in extruder head.
For screw pump extrusion mechanism, it is intended to be allowed in steady extruding state, flowing of the slurry in screw rod pump portion
State must match with the flow regime of extruder head.Specifically, it is desirable that have to and lead to by the flow of screw rod pump portion
The flow for crossing extruder head is identical, therefore:
Q1=Q2=Q3 (5)
Analyzed above, under the conditions of known to the material property, by formula (1)-(2), (3)-(5) can obtain screw rod revolution speed with
Pressure drop, slurry viscosity, the relationship between slurry extruded velocity and screw rod revolution speed are as follows:
(2) after mixing is uniform, ceramic slurry enters the screw type chamber with eccentricity, since slurry is non-newtonian fluid,
With compressibility, compared to traditional plunger type feeding, which is equivalent to that ceramic slurry is divided in multiple screw types is intracavitary,
The pressure difference variation for largely reducing ceramic slurry inlet and outlet, can finally control slurry silk in time at spray outlet
The extrusion and stopping of body avoid occurring pressure release at spray outlet as existing caused by very big pressure difference inside slurry,
It eventually causes slurry filament to stop not in time, the inadequate problem of the element precision of printing.
(3) printing ceramic false tooth generally selects two feeding ports, because ceramic false tooth different piece has different structures
Characteristic and material composition (material composition ratio is different or structural behaviour is different), so passing through connection at screw pump feed inlet
Atmospheric pressure pump can adjust the start and stop of conveying slurry and the composition ratio of material composition at any time.
Ceramic false tooth is usually made of CNC cutting technology, and since green body quality is harder, ceramic body is in shaping by stock removal
In the process, the crackle as caused by cutting force is often generated；Using the printer, direct 3D printing forming reduces and cut
Journey avoids the crackle as caused by cutting force.
Using CNC cutting technology during making ceramic false tooth, in order to be more nearly the natural teeth of human body, use
" subtracting material manufacture " principle, has many ceramic materials and is cut out, and using the printer, what is utilized is " increasing material manufacturing " principle,
Reduce the waste of material, and use screw pump feeding extrusion mechanism, largely avoids " salivation phenomenon ", that is, work as
The problem of mechanism stops working, and slurry still squeezes out decreases the waste of material in terms of squeezing out the timely start and stop of silk, passes through reality
Calculating is tested, relative to traditional processing mode, the utilization rate of material can achieve 90% or more.
Ceramic false tooth is made using the ceramic false tooth 3D printer, waste of material rate is low, and manufacturing process is simple, without complexity
Cutting process, there is no excessively high technical requirements to staff, accordingly, with respect to classical production process, the production method at
This is lower, and fabrication cycle is short.
The utility model unaccomplished matter is well-known technique.
Claims (4)
1. a kind of extruded type ceramic false tooth 3D printer, it is characterized in that the composition of the device includes that pedestal, Y-axis guide rail, X-axis are led
Rail, column, Z axis guide rail, fixture, screw pump, barrel, pipeline, spray head and forming board；
Wherein, column is fixed with by articulation piece on rear side of the middle part of pedestal, the top of column is fixed with Z axis guide rail, in Z axis guide rail
Sliding block be fixed with fixture, on the boss of fixture lower end distribution there are three or five through-holes, the hole in middle position be fixed with screw rod
Pump, remaining side of surrounding position hole are respectively equipped with a barrel, each barrel discharge port by pipeline respectively with entering on screw pump
Material mouth connection；The bottom of screw pump is equipped with spray head；
On the pedestal, the arranged on left and right sides of column is respectively fixed with a Y-axis guide rail, and 2 Y-axis guide rails are parallel；X-axis guide rail two
The sliding block that the bottom at end is separately fixed on the sliding block in 1 Y-axis guide rail, in X-axis guide rail is fixed with profiled sheeting, and profiled sheeting is located at
The lower part of spray head；
The composition of the screw pump includes screw pump rotor, screw pump stator and upper housing, the drive of servo motor in upper housing
Moving axis is connected by shaft coupling with the center-pole of the mixing part of screw pump rotor；The lower outlet of screw pump stator and entering for spray head
Mouth is connected；
The screw pump rotor is divided into two parts, and top half is mixing part, and lower half portion is feed section；
The mixing part is center bar and the mixing bar for being distributed in its surrounding；The center-pole is round bar；Described is mixed
Material bar is divided into reverse mixing bar, vertical mixing bar and forward three kinds of mixing bar；The reverse mixing bar and center rod axis to
On direction it is at 45 °, vertical mixing bar and center rod axis upwardly direction are in 90 °, forward mixing bar and center rod axis to
On direction at 135 °；The feed section is the screw rod with eccentricity；
The reverse mixing bar, vertical mixing bar are identical with the diameter of forward mixing bar, are uniformly distributed on center-pole, quantity
It is also identical with spacing；The vertical range of reverse mixing bar, vertical mixing bar and the forward end of mixing bar to center-pole is also identical；
Wherein, length ratio is mixing part: feed section=4:5, the length ratio of three kinds of mixing bar distributed areas on center-pole
Are as follows: reverse mixing bar: vertical mixing bar: forward mixing bar=1.414:1:1.414.
2. extruded type ceramic false tooth 3D printer as described in claim 1, it is characterized in that the length of the screw pump stator
It is identical as the length of the rotor of screw pump, by outer rigid housing, and it is mounted on the rubber inner wall composition of lower part in outer rigid housing, rubber
The length of inner wall and the length of feed section are identical；Stator interior and screw pump rotor are interference fitted.
3. extruded type ceramic false tooth 3D printer as described in claim 1, it is characterized in that the diameter of the mixing bar is
0.2mm, the vertical range to center-pole are 0.8mm；The diameter of center-pole is 1.56mm；The eccentricity of the screw rod is
0.28mm, diameter 1.56mm.
4. extruded type ceramic false tooth 3D printer as described in claim 1, it is characterized in that the diameter of the spray head is
0.41mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920010197.5U CN209718049U (en) | 2019-01-04 | 2019-01-04 | Extruded type ceramic false tooth 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920010197.5U CN209718049U (en) | 2019-01-04 | 2019-01-04 | Extruded type ceramic false tooth 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209718049U true CN209718049U (en) | 2019-12-03 |
Family
ID=68679017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201920010197.5U Active CN209718049U (en) | 2019-01-04 | 2019-01-04 | Extruded type ceramic false tooth 3D printer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109435010A (en) * | 2019-01-04 | 2019-03-08 | 河北工业大学 | Extruded type ceramic false tooth 3D printer |
| CN111391063A (en) * | 2020-06-02 | 2020-07-10 | 华创智造(天津)科技有限公司 | Print shower nozzle and use its building 3D printer |
-
2019
- 2019-01-04 CN CN201920010197.5U patent/CN209718049U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109435010A (en) * | 2019-01-04 | 2019-03-08 | 河北工业大学 | Extruded type ceramic false tooth 3D printer |
| CN111391063A (en) * | 2020-06-02 | 2020-07-10 | 华创智造(天津)科技有限公司 | Print shower nozzle and use its building 3D printer |
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