CN113954362A - Multi-material reducing screw extrusion 3D printing device - Google Patents
Multi-material reducing screw extrusion 3D printing device Download PDFInfo
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- CN113954362A CN113954362A CN202111279122.5A CN202111279122A CN113954362A CN 113954362 A CN113954362 A CN 113954362A CN 202111279122 A CN202111279122 A CN 202111279122A CN 113954362 A CN113954362 A CN 113954362A
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- 239000000463 material Substances 0.000 title claims abstract description 51
- 238000001125 extrusion Methods 0.000 title claims abstract description 36
- 238000010146 3D printing Methods 0.000 title claims abstract description 25
- 238000007639 printing Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000002002 slurry Substances 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
- B29C64/336—Feeding of two or more materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/227—Driving means
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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
- B29C64/245—Platforms or substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/314—Preparation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
- B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/10—Pre-treatment
-
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Coating Apparatus (AREA)
Abstract
The invention relates to and provides a multi-material reducing screw extrusion 3D printing device, wherein an X-axis driving unit is arranged on a bottom plate, a Y-axis driving unit is arranged on the X-axis driving unit, a printing platform is connected above the Y-axis driving unit, and the X-axis driving unit and the Y-axis driving unit drive the printing platform to horizontally move; install feeding unit and Z axle drive unit on the riser, the drive of Z axle drive unit prints the unit and carries out vertical lift. According to the invention, the slurry is added into the mixing cavity through the feeding pipe in the opposite direction, so that the primary mixing effect of the slurry just entering the mixing cavity is improved; the screw is designed by adopting the variable-inner-diameter and unequal-depth screw grooves, and the flowing direction of the slurry is disordered continuously when the slurry is mixed by the variable-diameter screw, so that the mixing effect of the slurry is further improved; the gap between the screw grooves of the feeding section and the mixing section of the variable-diameter screw and the inner wall of the charging barrel is gradually reduced, the extrusion force is continuously increased, the gap between the extrusion sections is not changed, and the uniformity and the stability of extrusion of the high-viscosity material are ensured.
Description
Technical Field
The invention belongs to the technical field of 3D printers, and particularly relates to a multi-material reducing screw extrusion 3D printing device.
Background
The 3D printing technology is also called additive manufacturing technology, and is a novel advanced manufacturing technology which integrates machinery, numerical control, computers and materials and is developed in the later period of the 20 th century and the 80 th year. 3D printing is a digital manufacturing technique that directly shapes three-dimensional complex structures by simple two-dimensional layer-by-layer addition of material. The method can directly manufacture parts and structures with any complex internal structure and unlimited external shape and geometric dimension, and can flexibly and digitally control the materials and properties of different parts of the parts in the digital printing manufacturing process point by point, line by line and layer by layer, thereby endowing the member with extraordinary performance which is not possessed by the traditional single material.
Most of the existing 3D printing can only realize single-material printing, and especially, high-viscosity materials such as ceramic clay, high-solid-content materials, viscous polymers and the like cannot be printed. Most of the developed multi-material 3D printers have a plurality of nozzles, and have a lot of defects and limitations: the number of configured nozzles is limited, the structure and operation of multiple nozzles are complex, and the multiple nozzles need to be frequently switched, so that the printing efficiency is reduced. The existing multi-material 3D printing technology basically adopts a material passive mixing method, cannot realize active mixing and accurate control of each component of a plurality of materials, and has the defects of uneven multi-material mixing, low mixing efficiency and poor controllability.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multi-material reducing screw extrusion 3D printing device, which realizes accurate feeding of multiple materials through an electric cylinder push rod and realizes uniform mixing and extrusion of the multiple materials through a reducing screw, thereby being beneficial to realizing functional gradient printing of high-viscosity materials.
The technical problem to be solved by the invention is realized by the following technical scheme:
the utility model provides a many materials reducing screw extrusion 3D printing device which characterized in that: the X-axis driving unit and the Y-axis driving unit are arranged on the bottom plate, a printing platform is connected above the Y-axis driving unit, and the X-axis driving unit and the Y-axis driving unit drive the printing platform to move horizontally; install feeding unit and Z axle drive unit on the riser, be connected with the printing unit on the Z axle drive unit, the feeding unit with print the unit connection, the unit is printed in the drive of Z axle drive unit and carries out vertical lift.
And, the feeding unit number is two, and the symmetry set up in the riser both ends, the feeding unit includes box and coaxial electric jar push rod, the syringe that sets up in the box, the box pass through the bolt install in on the riser, be provided with pressure sensor between electric jar push rod and the syringe, electric jar push rod promotes the syringe and accomplishes the thick liquids feeding.
Furthermore, the printing unit comprises a left mounting plate, a right mounting plate, an intermediate connecting plate and a material cylinder, wherein the left mounting plate, the right mounting plate and the intermediate connecting plate are all connected onto a slide block of the Z-axis driving unit through bolts, a material mixing cavity is arranged inside the left mounting plate, the right mounting plate and the intermediate connecting plate, pneumatic connectors are symmetrically arranged on two sides of the material mixing cavity, the material mixing cavity is connected to the feeding unit through the pneumatic connectors, the bottom end of the material mixing cavity is connected to the material cylinder, a reducing screw rod is coaxially arranged in the material cylinder and the material mixing cavity in a penetrating manner, the reducing screw rod is connected with the material mixing cavity in a sealing manner through a sealing ball bearing, the lower end of the material cylinder is sequentially connected with an adapter and a nozzle, L-shaped mounting brackets are all clamped and connected into grooves on two sides of the upper end of the material cylinder, and the side faces of the L-shaped mounting brackets are connected with a motor supporting plate through bolts, and a stepping speed reducing motor is arranged on the motor supporting plate and is connected to the top end of the reducing screw rod through a coupler.
And, feed cylinder, adapter and nozzle all pass through threaded connection.
Moreover, the vertical plate is an aluminum alloy section.
Moreover, the diameter of the reducing screw is gradually increased from top to bottom.
And a reinforcing rib is arranged between the vertical plate and the bottom plate.
And, X axle drive unit number is 2, and evenly distributed in Y axle drive unit below.
And the box body is provided with an observation window corresponding to the position of the injector.
The invention has the advantages and beneficial effects that:
1. according to the multi-material reducing screw extrusion 3D printing device, the slurry is added into the mixing cavity in the opposite direction through the feeding pipe, so that the primary mixing effect of the slurry just entering the mixing cavity is improved; the screw is designed by adopting the variable-inner-diameter and unequal-depth screw grooves, and the flowing direction of the slurry is disordered continuously when the slurry is mixed by the variable-diameter screw, so that the mixing effect of the slurry is further improved; the gap between the screw grooves of the feeding section and the mixing section of the variable-diameter screw and the inner wall of the charging barrel is gradually reduced, the extrusion force is continuously increased, the gap between the extrusion sections is not changed, and the uniformity and the stability of extrusion of the high-viscosity material are ensured.
2. The multi-material reducing screw extrusion 3D printing device can realize real-time mixing and extrusion of slurry, and has obvious advantages in a multi-material 3D printing process.
3. According to the multi-material reducing screw extrusion 3D printing device, the feeding unit adopts the electric cylinder push rod, compared with an air pump mode, the feeding pressure is more stable, the regulation and control are more convenient and accurate, the stable movement of the push rod is ensured due to the design of the electric cylinder push rod clamp,
4. according to the multi-material reducing screw extrusion 3D printing device, the vertical plate is an aluminum alloy section, and compared with an aluminum plate, the weight is reduced, and the cost is lower.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a printing unit of the present invention;
FIG. 3 is a schematic view of the structure of a feed unit according to the present invention.
Description of the reference numerals
The automatic feeding device comprises a base plate 1, a 2-Y-axis ball screw, a 3-X-axis ball screw, a 4-left mounting plate, a 5-middle connecting plate, a 6-Z-axis sliding block, a 7-Z-axis ball screw, a 8-vertical plate, a 9-electric cylinder push rod, a 10-box body, a 11-pressure sensor, a 12-injector, a 13-stepping speed reducing motor, a 14-motor supporting plate, a 15-right mounting plate, a 16-mixing cavity, a 17-pneumatic connector, an 18-L-shaped mounting bracket, a 19-charging barrel, a 20-adapter, a 21-nozzle, a 22-reducing screw, a 23-sealing ball bearing, a 24-coupler, a 25-printing platform, a 26-reinforcing rib and a 27-observation window.
Detailed Description
The present invention is further illustrated by the following specific examples, which are intended to be illustrative, not limiting and are not intended to limit the scope of the invention.
The utility model provides a many materials reducing screw extrusion 3D printing device which innovation point in: the printing machine comprises a bottom plate 1 and a vertical plate 8 vertically arranged on the bottom plate 1, wherein an X-axis driving unit is arranged on the bottom plate 1, a Y-axis driving unit is arranged on the X-axis driving unit, a printing platform 25 is connected above the Y-axis driving unit, and the X-axis driving unit and the Y-axis driving unit drive the printing platform 25 to horizontally move; install feeding unit and Z axle drive unit on the riser 8, be connected with the printing unit on the Z axle drive unit, the feeding unit with print the unit connection, the Z axle drive unit drive prints the unit and carries out vertical lift.
The number of the feeding units is two, the feeding units are symmetrically arranged at two ends of the vertical plate 8, each feeding unit comprises a box body 10, an electric cylinder push rod 9 and an injector 12 which are coaxially arranged in the box body 10, the box body 10 is arranged on the vertical plate 8 through bolts, a pressure sensor 11 is arranged between the electric cylinder push rod 9 and the injector 12, the electric cylinder push rod 9 pushes the injector 12 to complete slurry feeding, the feeding module is arranged on an aluminum alloy section vertical plate 8 through a box body 10, the aluminum alloy section can reduce weight and cost relative to an aluminum plate, the electric cylinder push rod 9 and the injector 12 are clamped and fixed through the box body 10, a pressure sensor 11 is arranged between the electric cylinder push rod 9 and the injector 12, the device is used for monitoring the extrusion pressure of the electric cylinder push rod 9 to accurately control the extrusion pressure of the slurry, and the electric cylinder push rod 9 pushes the piston rod of the injector 12 to extrude the slurry.
The printing unit comprises a left mounting plate 4, a right mounting plate 15, an intermediate connecting plate 5 and a charging barrel 19, wherein the left mounting plate 4, the right mounting plate 15 and the intermediate connecting plate 5 are all connected to a Z-axis slider 6 of a Z-axis driving unit through bolts, a mixing cavity 16 is installed on the inner sides of the left mounting plate 4, the right mounting plate 15 and the intermediate connecting plate 5, pneumatic connectors 17 are symmetrically arranged on two sides of the mixing cavity 16, the mixing cavity 16 is connected to the feeding unit through the pneumatic connectors 17, the bottom end of the mixing cavity 16 is connected to the charging barrel 19, reducing screws 22 are arranged in the charging barrel 19 and the mixing cavity 16 in a same-axis mode, the reducing screws 22 are connected with the mixing cavity 16 through sealing ball bearings 23 in a sealing mode, the lower end of the charging barrel 19 is sequentially connected with an adapter 20 and a nozzle 21, and L-shaped mounting brackets 18 are clamped in grooves on two sides of the upper end of the charging barrel 19, the side of L type installing support 18 has motor support plate 14 through bolted connection, install step reduction motor 13 on the motor support plate 14, step reduction motor 13 is connected to through shaft coupling 24 reducing screw 22 top.
Reducing screw 22 adopts the design of the not deep screw groove of variable internal diameter, including reinforced section, mixed section and extrusion section, the pan feeding mouth screw groove is more dark to be favorable to thick liquids to flow in, and increase screw groove storage capacity diminishes along with the screw groove degree of depth gradually, and the extrusion force constantly increases, and thick liquids are steadily carried forward when following the screw rotation and mixing, and extrusion mouth speed is undulant little, and conveying efficiency improves.
The charging barrel 19, the adapter 20 and the nozzle 21 are connected through threads, so that the assembly and disassembly are convenient, and the replacement of the nozzles 21 with different specifications is convenient.
Be provided with strengthening rib 26 between riser 8 and the bottom plate 1, reinforcing joint strength guarantees the steady operation of device.
The number of the X-axis driving units is 2, and the X-axis driving units are uniformly distributed below the Y-axis driving units, so that the moving stability of the printing platform 25 is improved, and the printing effect is improved.
The box body 10 is provided with an observation window 27 corresponding to the injector 12, so that the weight is reduced, and the discharging condition of the slurry in the injector 12 can be conveniently observed.
The working principle of the invention is as follows:
the position of the printing platform is adjusted under the extrusion nozzle through an X-axis ball screw of the X-axis driving unit and a Y-axis ball screw of the Y-axis driving unit, and the longitudinal position of the printing unit is adjusted through a motor of the Z-axis driving unit and a Z-axis ball screw 7;
after the prepared high-viscosity material is loaded into an injector, an electric cylinder push rod is utilized to push a piston rod of the injector, a piston pushes slurry to enter a feeding pipe, extrusion pressure is detected through a pressure sensor, and the feeding speed of the electric cylinder push rod and the injector is controlled by the driving of an external motor to control the feeding proportion of multiple materials; the slurry enters the mixing cavity through the feeding pipe in the opposite direction through the pneumatic connector, and the primary mixing effect of the slurry just entering the mixing cavity is improved; the speed reduction stepping motor performs secondary mixing and axial extrusion on the slurry by adjusting the rotating speed of the variable-diameter screw, and finally prints through the spray head.
Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.
Claims (9)
1. The utility model provides a many materials reducing screw extrusion 3D printing device which characterized in that: the X-axis driving unit and the Y-axis driving unit are arranged on the bottom plate, a printing platform is connected above the Y-axis driving unit, and the X-axis driving unit and the Y-axis driving unit drive the printing platform to move horizontally; install feeding unit and Z axle drive unit on the riser, be connected with the printing unit on the Z axle drive unit, the feeding unit with print the unit connection, the unit is printed in the drive of Z axle drive unit and carries out vertical lift.
2. The multi-material reducing screw extrusion 3D printing device according to claim 1, wherein: the feeding unit number is two, and the symmetry set up in the riser both ends, the feeding unit includes box and coaxial electric jar push rod, the syringe that sets up in the box, the box pass through the bolt install in on the riser, be provided with pressure sensor between electric jar push rod and the syringe, electric jar push rod promotes the syringe and accomplishes the thick liquids feeding.
3. The multi-material reducing screw extrusion 3D printing device according to claim 1, wherein: the printing unit comprises a left mounting plate, a right mounting plate, an intermediate connecting plate and a charging barrel, wherein the left mounting plate, the right mounting plate and the intermediate connecting plate are all connected onto a sliding block of the Z-axis driving unit through bolts, a mixing cavity is arranged on the inner sides of the left mounting plate, the right mounting plate and the intermediate connecting plate, pneumatic connectors are symmetrically arranged on two sides of the mixing cavity, the mixing cavity is connected onto the feeding unit through the pneumatic connectors, the bottom end of the mixing cavity is connected onto the charging barrel, a reducing screw rod is coaxially arranged in the charging barrel and the mixing cavity in a penetrating manner, the reducing screw rod is hermetically connected with the mixing cavity through a sealing ball bearing, the lower end of the charging barrel is sequentially connected with an adapter and a nozzle, L-shaped mounting brackets are respectively clamped and connected into grooves on two sides of the upper end of the charging barrel, and the side faces of the L-shaped mounting brackets are connected with a motor supporting plate through bolts, and a stepping speed reducing motor is arranged on the motor supporting plate and is connected to the top end of the reducing screw rod through a coupler.
4. The multi-material reducing screw extrusion 3D printing device according to claim 1, wherein: the charging barrel, the adapter and the nozzle are all connected through threads.
5. The multi-material reducing screw extrusion 3D printing device according to claim 1, wherein: the vertical plate is an aluminum alloy section.
6. The multi-material reducing screw extrusion 3D printing device according to claim 1, wherein: the diameter of the reducing screw is sequentially increased from top to bottom.
7. The multi-material reducing screw extrusion 3D printing device according to claim 1, wherein: and reinforcing ribs are arranged between the vertical plates and the bottom plate.
8. The multi-material reducing screw extrusion 3D printing device according to claim 1, wherein: the number of the X-axis driving units is 2, and the X-axis driving units are uniformly distributed below the Y-axis driving units.
9. The multi-material reducing screw extrusion 3D printing device according to claim 1, wherein: and the box body is provided with an observation window corresponding to the position of the injector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111279122.5A CN113954362A (en) | 2021-10-31 | 2021-10-31 | Multi-material reducing screw extrusion 3D printing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111279122.5A CN113954362A (en) | 2021-10-31 | 2021-10-31 | Multi-material reducing screw extrusion 3D printing device |
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| Publication Number | Publication Date |
|---|---|
| CN113954362A true CN113954362A (en) | 2022-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111279122.5A Pending CN113954362A (en) | 2021-10-31 | 2021-10-31 | Multi-material reducing screw extrusion 3D printing device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208359473U (en) * | 2018-07-04 | 2019-01-11 | 青岛理工大学 | Integrated nozzle for electric field driven injection of multi-material 3D printing |
| CN110509542A (en) * | 2019-08-20 | 2019-11-29 | 西安增材制造国家研究院有限公司 | A kind of compound 3D printing structure of polychrome and Method of printing |
| CN113386239A (en) * | 2021-07-07 | 2021-09-14 | 河北工业大学 | Multi-material 3D printing method and micro-flow extrusion printer based on same |
-
2021
- 2021-10-31 CN CN202111279122.5A patent/CN113954362A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208359473U (en) * | 2018-07-04 | 2019-01-11 | 青岛理工大学 | Integrated nozzle for electric field driven injection of multi-material 3D printing |
| CN110509542A (en) * | 2019-08-20 | 2019-11-29 | 西安增材制造国家研究院有限公司 | A kind of compound 3D printing structure of polychrome and Method of printing |
| CN113386239A (en) * | 2021-07-07 | 2021-09-14 | 河北工业大学 | Multi-material 3D printing method and micro-flow extrusion printer based on same |
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