CN108407042A - Building 3D printer continuous feeding system - Google Patents
Building 3D printer continuous feeding system Download PDFInfo
- Publication number
- CN108407042A CN108407042A CN201810463264.9A CN201810463264A CN108407042A CN 108407042 A CN108407042 A CN 108407042A CN 201810463264 A CN201810463264 A CN 201810463264A CN 108407042 A CN108407042 A CN 108407042A
- Authority
- CN
- China
- Prior art keywords
- stirring
- spiral
- hopper
- building
- discharge port
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003756 stirring Methods 0.000 claims abstract description 92
- 238000007599 discharging Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 238000005086 pumping Methods 0.000 abstract description 6
- 238000004537 pulping Methods 0.000 abstract description 5
- 239000011083 cement mortar Substances 0.000 description 9
- 238000010146 3D printing Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012615 aggregate Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 239000006052 feed supplement Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/001—Rapid manufacturing of 3D objects by additive depositing, agglomerating or laminating of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses a continuous feeding system of a building 3D printer, which comprises a continuous pulping machine, a spiral pumping machine and a stirring spiral extruder, wherein the continuous pulping machine comprises a stirring bin and a spiral discharging pipeline communicated with the stirring bin, a discharging port of the spiral discharging pipeline is connected with a feeding port of the spiral pumping machine, a feeding port of the spiral pumping machine is connected with a feeding port of the stirring spiral extruder, and the stirring spiral extruder comprises a stirring bin, a stirring paddle shaft and a conical screw, wherein the stirring paddle shaft and the conical screw are arranged in the stirring bin. The invention efficiently makes pulp by the continuous pulping machine, and performs multi-level cache by the stirring bin of the continuous pulping machine, the spiral pumping machine and the stirring hopper of the stirring spiral extruder, thereby realizing continuous and uninterrupted feeding of the printer.
Description
Technical field
The present invention relates to building 3D printing field, specifically a kind of building 3D printer continuous feeding systems.
Background technology
3D printing（3DP) i.e. one kind of rapid shaping technique, it is one kind based on three-dimensional digital model file, is used
The adhesive materials such as powdery metal or plastic construct the technology of object by layer-by-layer printing.Build 3D printing skill
Art is the new application that developed on the basis of FDM (fused glass pellet), and principle is by three-dimensional slice software to building
The threedimensional model for building component carries out slicing delamination generation printer movement code, is then driven by three coordinate mobile platforms of printer
Dynamic extruder successively squeezes out special cement mortar, repeatedly stacks building element of the molding with utility function.
Currently, building 3D printer is influenced with printed material factor greatly by printing building element size, there are easy solidifications
The easy failure of putty, feeding system can not the problems such as continuous feeding, feeding system the degree of automation are low, feed precision is difficult to control.
Invention content
The technical problem to be solved in the present invention is to provide a kind of building 3D printer continuous feeding systems, can realize raw material
The automatic function of lacking material and monitor the control that accurately discharges with extruder of automatic stirring slurrying feed and system after input, effectively
Improve building 3D printer production efficiency and print quality.
The technical scheme is that：
A kind of building 3D printer continuous feeding system, includes continous way pulper, and spiral pump machine and agitating auger squeeze out
Machine；The continous way pulper includes stirring bunker, be set to stirring bunker in the auger that is driven by mixer drive
Blade, the spiral discharging pipeline being connected to stirring bunker, the water supply line being connected to spiral discharging pipeline and it is set to stirring
The discharge end of screw drives axis in feed bin and spiral discharging pipeline, the spiral discharging pipeline is provided with discharge port；It is described
The feed inlet of spiral pump machine be connected to the discharge port of spiral discharging pipeline；The agitating auger extruder includes stirring
Hopper, decelerating motor, stepper motor, the output shaft company with the mixing paddle axle of the output axis connection of decelerating motor, with stepper motor
The screw drive shaft connect and the conical screw with screw drive axis connection, are provided at the top of the stirring hopper and spiral shell
The feed inlet of the discharge port connection of pumping machine is revolved, the bottom end for stirring hopper is provided with discharge port, the mixing paddle axle and taper
Screw rod may be contained in stirring hopper, and mixing paddle axle is hollow structure, and the screw drive shaft being connect with stepper motor passes through hollow
Mixing paddle axle after connect with conical screw.
The stirring bunker includes the unclosed stirring warehouse in top and the warehouse lid for being connected to stirring warehouse top.
The continous way pulper further includes having feed bin supporting rack, and the stirring bunker is fixed on feed bin supporting rack
On, it is fixed on the driving device for slow-run and screw drives axis connection of feed bin supporting rack, the spiral being connect with driving device for slow-run is driven
Moving axis is extend into after passing through stirring bunker in spiral discharging pipeline.
The spiral pump rack is set to the lower section of spiral discharging pipeline, and the conveyance conduit of spiral pump machine is to tilt
Mechanism, feed inlet are located at the top of neighbouring conveyance conduit, and discharge port is located at the bottom end of conveyance conduit, spiral pump machine into
Caching hopper, the feed inlet on the discharge port direction caching hopper top of the spiral discharging pipeline are connected at material mouth.
The stirring hopper of the agitating auger extruder includes cylindrical tubular structure top and tapered tubular structure
Lower part, the feed inlet of the stirring hopper is set to the top of stirring hopper and by delivery hose and spiral pump machine
Discharge port connects, and the mixing paddle axle is set to the top of stirring hopper, and the conical screw is set to stirring hopper
Lower part, the discharge port of the stirring hopper are set to the bottom end of stirring hopper lower part.
The decelerating motor of the agitating auger extruder is located at the lower section of stepper motor, is connect with stepper motor output shaft
Screw drive shaft sequentially pass through decelerating motor retarder and hollow mixing paddle axle after connect with conical screw.
The top of the stirring hopper is built-in with level-sensing device, and bulkhead vibration is provided on the side wall of stirring hopper lower part
The discharge port of device, stirring hopper lower part is connected with extruder head, screw drives axis, the spiral pump of the continous way pulper
Machine, level-sensing device are connect with external control system.
Advantages of the present invention：
（1）, the present invention agitating auger extruder, pass through stirring, ancillary vibration and the cone to cement mortar in taper feed bin
Shape screw extrusion is capable of the extrusion cement mortar of uniformly continuous, improves printer print quality and stability, effectively prevent blocking up
Material；
（2）, the present invention high effective slurry preparation is carried out by continous way pulper, and pass through the stirring bunker of continous way pulper, spiral
The caching hopper of pumping machine and the stirring hopper of agitating auger extruder carry out multi-level buffer, realize that printer continuously uninterruptedly supplies
Material；
（3）, the present invention control system by being arranged the level-sensing device on agitating auger extruder, in real time monitoring stirring hopper
The material position of material, and startup continous way pulper carries out slurrying conveying automatically, spiral pump machine is pumped, operating personnel only need
For the interval feed supplement of continous way pulper, effectively improve in the prior art that the degree of automation is low, personnel labor intensity is big, production
The case where efficiency is low, putty high failure rate realizes function efficiently, in high quality buildings 3D printing.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the structural schematic diagram of continous way pulper and spiral pump machine of the present invention.
Fig. 3 is the structural schematic diagram of agitating auger extruder of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
See that Fig. 1-Fig. 3, a kind of building 3D printer continuous feeding system include continous way pulper, spiral pump machine
With agitating auger extruder；
Stirring bunker and the screw drives dress that continous way pulper includes feed bin supporting rack 11, is fixed on feed bin supporting rack 11
It sets 14, be set to the interior packing auger blade 15 driven by mixer drive of stirring bunker, the spiral discharging being connected to stirring bunker
Pipeline 16, the water supply line 18 being connected to spiral discharging pipeline 16 and the screw drives axis that is connect with driving device for slow-run 14
17, wherein stirring bunker includes the unclosed stirring warehouse 12 in top and is connected to the warehouse lid 13 for stirring 12 top of warehouse, with
The screw drives axis 17 that driving device for slow-run 14 connects is extend into after passing through stirring bunker in spiral discharging pipeline 16, spiral discharging
The discharge end of pipeline 16 is provided with discharge port 19；
Spiral pump machine 2 is set up in the lower section of spiral discharging pipeline 16, and the conveyance conduit of spiral pump machine 2 is leaning device,
Its feed inlet is located at the top of neighbouring conveyance conduit, and discharge port is located at the bottom end of conveyance conduit, the feed inlet of spiral pump machine 2
Place is connected with caching hopper 21, the feed inlet of the discharge port 19 of spiral discharging pipeline 16 towards 21 top of caching hopper；Caching material
Bucket 21 has a certain amount of caching capabilities, when cement mortar is continuously pumped into agitating auger extruder by spiral pump machine 2, continuously
Formula pulper starts the pulp making operations of next batch, it is ensured that systems stay is constantly fed；
Agitating auger extruder includes to stir hopper 31, decelerating motor 32, stepper motor 33, the output shaft with decelerating motor 32
The mixing paddle axle 34 of connection connects with the screw drive shaft 35 of the output axis connection of stepper motor 33 and with screw drive shaft 35
The stirring hopper 31 of the conical screw 36 connect, agitating auger extruder includes cylindrical tubular structure top and tapered tubular knot
The feed inlet of the lower part of structure, stirring hopper 31 is set to the top of stirring hopper 31 and by delivery hose 4 and spiral pump machine 2
Discharge port connection, the discharge port of stirring hopper 31 is set to the bottom end of stirring hopper 31 lower part, and mixing paddle axle 34, which is set to, to be stirred
The top of spice bucket 31 and be hollow structure, conical screw 36 be set to stirring hopper 31 lower part, mix subtracting for extruser
Speed motor 32 is located at the lower section of stepper motor 33, and the screw drive shaft 35 that axis connection is exported with stepper motor 33 sequentially passes through deceleration
It is connect with conical screw 36 after the retarder of motor 32 and hollow mixing paddle axle 34；Wherein, the top of stirring hopper 31 is also interior
It is equipped with level-sensing device 37, hopper wall vibrator 38, the discharge port of 31 lower part of stirring hopper are provided on the side wall of 31 lower part of stirring hopper
It is connected with extruder head 39, the extruder head 39 of different bores, continous way slurrying can be replaced according to different materials and print component situation
Screw drives axis 17, spiral pump machine 2, the level-sensing device 37 of machine are connect with external control system.
The lower part for stirring hopper 31 is tapered tube configuration, has the function of caching material, conical screw 36 is by stepper motor
33 drivings, it is ensured that material keeps the uniform extrusion of certain pressure according to setting flow；
The operation principle of the present invention：
Manually input cement, aggregate, additive small powder enter to stir in warehouse 12 first, according to the proportioning that control system is set, supply
Waterpipe 18 is passed through gauge water, and carries out stirring pulping, and after the completion of waiting for slurrying, screw drives axis 17 is by cement mortar continuous conveying
And drop into caching hopper 21, screw drives axis 17, spiral pump machine 2 stop conveying；Then the cement in hopper 21 is cached
Mortar enters stirring in stirring hopper 31, and agitating auger extruder drives mixing paddle axle 34 uninterruptedly to stir by decelerating motor 32
Cement mortar is mixed, prevents its condensation from blocking, and stir the lower compression cement mortar of hopper 31 downwards, agitating auger extruder is logical
The driving cone screw rod 36 of stepper motor 33 is crossed, continuously cement mortar, supply building are provided to replaceable extruder head 39
3D printer accumulation printing building structure is used.
When the level-sensing device 37 of agitating auger extruder detects cement mortar less than setting liquid level, control system control is continuous
Screw drives axis 17, the spiral pump machine 2 of formula pulper are again started up the supply conveying for carrying out cement slurry, between realizing not
Disconnected continuous feeding.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of building 3D printer continuous feeding system, it is characterised in that：Include continous way pulper, spiral pump machine and
Agitating auger extruder；The continous way pulper includes stirring bunker, being set to stirring bunker, interior driven by stirring fills
The packing auger blade for setting driving, the spiral discharging pipeline being connected to stirring bunker, the water supply line being connected to spiral discharging pipeline, with
And it is set to the screw drives axis in stirring bunker and spiral discharging pipeline, the discharge end of the spiral discharging pipeline is provided with
Discharge port；The feed inlet of the spiral pump machine is connected to the discharge port of spiral discharging pipeline；The agitating auger squeezes out
Machine includes the mixing paddle axle and stepping electricity for the output axis connection for stirring hopper, decelerating motor, stepper motor and decelerating motor
The screw drive shaft of the output axis connection of machine and the conical screw with screw drive axis connection, the top of the stirring hopper
Portion is provided with the feed inlet being connect with the discharge port of spiral pump machine, and the bottom end for stirring hopper is provided with discharge port, and described stirs
It mixes paddle shaft and conical screw may be contained in stirring hopper, mixing paddle axle is hollow structure, and the screw rod being connect with stepper motor drives
Moving axis is connect after passing through hollow mixing paddle axle with conical screw.
2. a kind of building 3D printer continuous feeding system according to claim 1, it is characterised in that：The stirring material
Storehouse includes the unclosed stirring warehouse in top and the warehouse lid for being connected to stirring warehouse top.
3. a kind of building 3D printer continuous feeding system according to claim 1, it is characterised in that：The continous way
Pulper further includes having feed bin supporting rack, and the stirring bunker is fixed on feed bin supporting rack, is fixed on feed bin supporting rack
Driving device for slow-run and screw drives axis connection, the screw drives axis being connect with driving device for slow-run stretch into after passing through stirring bunker
Into spiral discharging pipeline.
4. a kind of building 3D printer continuous feeding system according to claim 1, it is characterised in that：The helicoidal pump
The lower section for sending rack to be set to spiral discharging pipeline, and the conveyance conduit of spiral pump machine is leaning device, feed inlet is located at neighbour
The top of nearly conveyance conduit, discharge port are located at the bottom end of conveyance conduit, and caching material is connected at the feed inlet of spiral pump machine
Bucket, the feed inlet on the discharge port direction caching hopper top of the spiral discharging pipeline.
5. a kind of building 3D printer continuous feeding system according to claim 1, it is characterised in that：The stirring spiral shell
The stirring hopper of rotation extruder includes the lower part on cylindrical tubular structure top and tapered tubular structure, the stirring hopper
Feed inlet be set to stirring hopper top and connect with the discharge port of spiral pump machine by delivery hose, the stirring
Paddle shaft is set to the top of stirring hopper, and the conical screw is set to the lower part of stirring hopper, the stirring hopper
Discharge port is set to the bottom end of stirring hopper lower part.
6. a kind of building 3D printer continuous feeding system according to claim 1, it is characterised in that：The stirring spiral shell
The decelerating motor of rotation extruder is located at the lower section of stepper motor, and the screw drive shaft being connect with stepper motor output shaft sequentially passes through
It is connect with conical screw after the retarder of decelerating motor and hollow mixing paddle axle.
7. a kind of building 3D printer continuous feeding system according to claim 5, it is characterised in that：The stirring material
The top of bucket is built-in with level-sensing device, and hopper wall vibrator, the discharging of stirring hopper lower part are provided on the side wall of stirring hopper lower part
Mouth is connected with extruder head, the screw drives axis of the continous way pulper, spiral pump machine, level-sensing device with external control
System connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810463264.9A CN108407042A (en) | 2018-05-15 | 2018-05-15 | Building 3D printer continuous feeding system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810463264.9A CN108407042A (en) | 2018-05-15 | 2018-05-15 | Building 3D printer continuous feeding system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108407042A true CN108407042A (en) | 2018-08-17 |
Family
ID=63139488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810463264.9A Pending CN108407042A (en) | 2018-05-15 | 2018-05-15 | Building 3D printer continuous feeding system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108407042A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108943419A (en) * | 2018-09-17 | 2018-12-07 | 中铁四局集团有限公司 | Concrete continuous stirring pumping control system and control method based on 3D printing |
| CN109779260A (en) * | 2018-10-22 | 2019-05-21 | 北京中瑞麦通科技有限公司 | A kind of robot wisdom 3D building printer |
| CN110421681A (en) * | 2019-07-10 | 2019-11-08 | 中国建筑第八工程局有限公司 | Walking builds 3D printing process control system and method |
| CN110925217A (en) * | 2019-11-29 | 2020-03-27 | 湖南工业大学 | Special melt pump for high-filling wood-plastic composite material |
| CN111251410A (en) * | 2020-01-16 | 2020-06-09 | 河北工业大学 | Feeding mechanism and building 3D printing system using same |
| CN111391062A (en) * | 2020-01-16 | 2020-07-10 | 华创智造(天津)科技有限公司 | Desktop formula concrete 3D printer |
| CN111660527A (en) * | 2020-05-25 | 2020-09-15 | 浙江雅盛塑胶有限公司 | Extrusion equipment is used in production of environment-friendly food level cosmetics packaging hose |
| CN112440465A (en) * | 2019-08-30 | 2021-03-05 | 精工爱普生株式会社 | Three-dimensional molding device and injection molding device |
| CN112677282A (en) * | 2020-12-02 | 2021-04-20 | 同济大学 | Concrete 3D beats printer head and printing apparatus |
| CN113021562A (en) * | 2021-04-16 | 2021-06-25 | 北京工业大学 | Piezoelectric aggregate automation buries device underground based on cement base 3D prints |
| WO2021196850A1 (en) * | 2020-04-02 | 2021-10-07 | 苏州美梦机器有限公司 | Screw feeding device, and material extrusion system and method for 3d printing |
| CN114776009A (en) * | 2022-04-21 | 2022-07-22 | 南京嘉翼精密机器制造股份有限公司 | Building concrete 3D beats printer head and 3D printer |
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| GB1380082A (en) * | 1971-02-25 | 1975-01-08 | Matthews Co Worcester Ltd K R | Feed hoppers |
| US20170008193A1 (en) * | 2013-12-10 | 2017-01-12 | S&P Clever Reinforcement Company Ag | Mixing and conveying facility for dry building materials from a supply silo |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108943419A (en) * | 2018-09-17 | 2018-12-07 | 中铁四局集团有限公司 | Concrete continuous stirring pumping control system and control method based on 3D printing |
| CN109779260A (en) * | 2018-10-22 | 2019-05-21 | 北京中瑞麦通科技有限公司 | A kind of robot wisdom 3D building printer |
| CN109779260B (en) * | 2018-10-22 | 2023-12-05 | 北京美斯顿科技开发有限公司 | Intelligent 3D building printer of robot |
| CN110421681A (en) * | 2019-07-10 | 2019-11-08 | 中国建筑第八工程局有限公司 | Walking builds 3D printing process control system and method |
| CN112440465A (en) * | 2019-08-30 | 2021-03-05 | 精工爱普生株式会社 | Three-dimensional molding device and injection molding device |
| CN110925217A (en) * | 2019-11-29 | 2020-03-27 | 湖南工业大学 | Special melt pump for high-filling wood-plastic composite material |
| CN111391062B (en) * | 2020-01-16 | 2021-08-27 | 华创智造(天津)科技有限公司 | Desktop formula concrete 3D printer |
| CN111251410A (en) * | 2020-01-16 | 2020-06-09 | 河北工业大学 | Feeding mechanism and building 3D printing system using same |
| CN111391062A (en) * | 2020-01-16 | 2020-07-10 | 华创智造(天津)科技有限公司 | Desktop formula concrete 3D printer |
| WO2021196850A1 (en) * | 2020-04-02 | 2021-10-07 | 苏州美梦机器有限公司 | Screw feeding device, and material extrusion system and method for 3d printing |
| CN111660527A (en) * | 2020-05-25 | 2020-09-15 | 浙江雅盛塑胶有限公司 | Extrusion equipment is used in production of environment-friendly food level cosmetics packaging hose |
| CN112677282A (en) * | 2020-12-02 | 2021-04-20 | 同济大学 | Concrete 3D beats printer head and printing apparatus |
| CN113021562A (en) * | 2021-04-16 | 2021-06-25 | 北京工业大学 | Piezoelectric aggregate automation buries device underground based on cement base 3D prints |
| CN113021562B (en) * | 2021-04-16 | 2022-05-27 | 北京工业大学 | Piezoelectric aggregate automation buries device underground based on cement base 3D prints |
| CN114776009A (en) * | 2022-04-21 | 2022-07-22 | 南京嘉翼精密机器制造股份有限公司 | Building concrete 3D beats printer head and 3D printer |
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