CN108501373B - Temperature-controllable 3D printing spray head capable of automatically adjusting discharging mode - Google Patents
Temperature-controllable 3D printing spray head capable of automatically adjusting discharging mode Download PDFInfo
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- CN108501373B CN108501373B CN201810476124.5A CN201810476124A CN108501373B CN 108501373 B CN108501373 B CN 108501373B CN 201810476124 A CN201810476124 A CN 201810476124A CN 108501373 B CN108501373 B CN 108501373B
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- control module
- spray head
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- wall
- charging barrel
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- 239000007921 spray Substances 0.000 title claims abstract description 24
- 238000010146 3D printing Methods 0.000 title claims abstract description 16
- 238000007599 discharging Methods 0.000 title claims abstract description 14
- 230000005684 electric field Effects 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims abstract description 12
- 238000007906 compression Methods 0.000 claims abstract description 12
- 238000001125 extrusion Methods 0.000 claims abstract description 10
- 239000012620 biological material Substances 0.000 claims description 16
- 230000017525 heat dissipation Effects 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000004033 diameter control Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000007639 printing Methods 0.000 abstract description 17
- 239000002245 particle Substances 0.000 description 4
- 230000030833 cell death Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
- B29C64/20—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
- 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
- B29C64/295—Heating elements
-
- 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
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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
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Coating Apparatus (AREA)
Abstract
The invention discloses a temperature-controllable 3D printing nozzle capable of automatically adjusting a discharging mode, and belongs to the technical field of 3D printing; the technical problems to be solved are that the existing spray head is inconvenient to regulate and control, and the temperature control and discharging mode control of printing materials are difficult; the technical scheme is as follows: the spray head shell is a hollow cylinder with an opening at the bottom and a hole at the center of the top, and the annular fixing plate is fixed at the middle lower part of the inner wall of the spray head shell to form a discharge hole; the charging barrel is a hollow round pipe and is concentrically sleeved in the sprayer shell, and the extrusion piston is sleeved in the charging barrel; the resistance wire is uniformly wound on the outer wall of the heat conducting layer, and the heat conducting layer is sleeved outside the charging barrel and is tightly attached to the outer wall of the charging barrel; the three convergence pieces are tightly attached to each other to form an inverted cone with an opening at the top, the three convergence pieces are respectively connected with the discharge hole through rotating shafts, and the three compression springs are respectively fixed between the three convergence pieces and the inner wall of the sprayer shell; the two external electric field electrode plates are symmetrically embedded at the bottom of the inner wall of the sprayer housing.
Description
Technical Field
The invention discloses a temperature-controllable 3D printing nozzle capable of automatically adjusting a discharging mode, and belongs to the technical field of 3D printing.
Background
The biological 3D printer is a rapid prototyping device which can print by adopting various biological materials, and prints out a solid 3D biological material compatibility structure by utilizing related data, and a manufactured biological printing model has an external form and an open internal structure which meet the design requirements. In brief, the biological 3D printer extrudes the biological material in a fluid state, a gel state or a paste state through air pressure by controlling the movement of the printing material cylinder in a three-dimensional space, and forms models in different shapes after the material is stacked layer by layer, thereby completing the 3D printing process.
However, due to different material properties, the requirements for printing conditions are different, such as temperature, material particle size, etc. Or the requirements on the discharging mode of the printing materials are different, and the required printing conditions are different. The existing 3D printing nozzle is usually provided with a heating module at the nozzle, so that the purpose of heating the biological material is achieved. Or the multi-channel multi-nozzle printing with different diameters is adopted for biological 3D printing, so that the printing of biological materials with different particle sizes is realized.
In the prior art, the temperature control biological 3D printing nozzle can only control the temperature of a single point, which can cause uneven heating of the biological material and influence the printing quality of the biological material. The current biological 3D printing nozzle can not realize controlling the diameter of the nozzle according to the particle size of the material, so that the biological printing nozzle is easy to block, and even leads to cell death when printing cells. In addition, the existing biological 3D printing nozzle cannot control the discharging mode of materials, so that the deviation of the printed biological 3D structure and an expected structure occurs.
Disclosure of Invention
The invention overcomes the defects of the prior art and solves the technical problems that the prior spray head is inconvenient to regulate and control and the temperature of printing materials and the discharging mode are difficult to control.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides a controllable 3D of temperature of automatically regulated ejection of compact mode prints shower nozzle, includes: the device comprises a spray head shell, a biological charging module, a temperature control module, a spray nozzle diameter control module and an external electric field electrode plate;
the spray head shell is a hollow cylinder with an opening at the bottom and a hole at the center of the top, the annular fixing plate is fixed at the middle lower part of the inner wall of the spray head shell to form a discharge hole, and the spray head shell is provided with two heat dissipation holes which are symmetrically distributed;
the biological charging module comprises a charging barrel and an extrusion piston, the charging barrel is a hollow circular tube, is concentrically sleeved in the spray head shell and is fixed on the annular fixing plate, and the extrusion piston is sleeved in the charging barrel;
the temperature control module comprises a resistance wire and a heat conduction layer, the resistance wire is uniformly wound on the outer wall of the heat conduction layer, and the heat conduction layer is sleeved outside the charging barrel and is tightly attached to the outer wall of the charging barrel;
the nozzle diameter control module comprises three convergence sheets and three compression springs, the three convergence sheets are tightly attached to each other to form an inverted cone with an open top, the three convergence sheets are respectively connected with the discharge hole through a rotating shaft, and the three compression springs are respectively fixed between the three convergence sheets and the inner wall of the nozzle shell;
the two external electric field electrode plates are symmetrically embedded at the bottom of the inner wall of the sprayer housing.
The cross section of the convergence sheet is Z-shaped, and the three convergence sheets are mutually lapped and tightly attached.
The temperature control module further comprises a temperature sensor and a main control module, the temperature sensor is welded on the inner wall of the heat conduction layer and connected with the input end of the main control module, and the output end of the main control module is connected with the heating control switch of the temperature control module.
The temperature sensor is a contact temperature sensor.
The temperature control module further comprises two heat dissipation fans which are respectively embedded in the two heat dissipation holes in the sprayer shell, and control switches of the two heat dissipation fans are connected with the output end of the main control module in the temperature control module.
Compared with the prior art, the invention has the following beneficial effects.
1. According to the invention, after the resistance wires which are uniformly wound generate heat, the biological materials in the charging barrel can be uniformly heated through the heat conduction layer, the heating temperature can be effectively controlled through the temperature sensor, and the adverse effect of inconvenient temperature control on the printing result due to nonuniform heating is effectively avoided.
2. According to the invention, the variable nozzle opening diameter is realized by arranging the 3 convergent pieces and the compression springs arranged between the 3 convergent pieces and the nozzle shell, and cell death caused by too small nozzle diameter is avoided in the printing process of biological materials such as cells.
3. According to the invention, the electric field is applied through the electrode plates, and the material discharging mode is controlled through the electric field, so that the consistency of the discharging of the biological material is realized, and the printing quality is improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
FIG. 3 is a cross-sectional view of a converging sheet of the present invention.
In the figure: the device comprises a sprayer shell 1, an external electric field electrode plate 2, a circular fixing plate 3, a discharge hole 4, a heat dissipation hole 5, a charging barrel 6, an extrusion piston 7, a resistance wire 8, a heat conduction layer 9, a convergence sheet 10, a compression spring 11, a temperature sensor 12 and a heat dissipation fan 13.
Detailed Description
As shown in fig. 1 to 3, the temperature-controllable 3D printing nozzle capable of automatically adjusting a discharging manner according to the present invention includes: the device comprises a spray head shell 1, a biological charging module, a temperature control module, a spray nozzle diameter control module and an external electric field electrode plate 2;
the sprayer housing 1 is a hollow cylinder with an opening at the bottom and a hole at the center of the top, a circular fixing plate 3 is fixed at the middle-lower part of the inner wall of the sprayer housing 1 to form a discharge hole 4, and two heat dissipation holes 5 which are symmetrically distributed are formed in the sprayer housing 1;
the biological charging module comprises a charging barrel 6 and an extrusion piston 7, wherein the charging barrel 6 is a hollow circular tube, is concentrically sleeved in the spray head shell 1 and is fixed on the annular fixing plate 3, and the extrusion piston 7 is sleeved in the charging barrel 6;
the temperature control module comprises a resistance wire 8 and a heat conduction layer 9, the resistance wire 8 is uniformly wound on the outer wall of the heat conduction layer 9, and the heat conduction layer 9 is sleeved outside the charging barrel 6 and is tightly attached to the outer wall of the charging barrel 6;
the nozzle diameter control module comprises three convergence pieces 10 and three compression springs 11, the three convergence pieces 10 are tightly attached to each other to form an inverted cone with an open top, the three convergence pieces 10 are respectively connected with the discharge hole 4 through rotating shafts, and the three compression springs 11 are respectively fixed between the three convergence pieces 10 and the inner wall of the nozzle shell 1;
the two external electric field electrode plates 2 are symmetrically embedded at the bottom of the inner wall of the sprayer housing 1.
The cross section of the convergence sheet 10 is Z-shaped, and the three convergence sheets 10 are mutually overlapped and tightly attached.
The temperature control module further comprises a temperature sensor 12 and a main control module, the temperature sensor 12 is welded on the inner wall of the heat conduction layer 9, the temperature sensor 12 is connected with the input end of the main control module, and the output end of the main control module is connected with a heating control switch of the temperature control module.
The temperature sensor 12 is a contact temperature sensor.
The temperature control module further comprises two heat dissipation fans 13 which are respectively embedded in the two heat dissipation holes 5 on the sprayer housing 1, and control switches of the two heat dissipation fans 13 are connected with the output end of the main control module in the temperature control module.
The working principle of the invention is as follows: after the printing biological material enters the charging barrel 6, the biological material is conveyed to a heating part through the extrusion piston 7, and the biological material is uniformly heated. After the heating is finished, the extrusion piston 7 continues to convey the biological material to the discharge port 4, when the particle size of the biological material is larger, pressure is generated on the convergence sheet 10 of the discharge port 4, the pressure is transmitted to the compression spring 11 through the convergence sheet 10, and the compression spring 11 contracts, so that the purpose of controlling the opening diameter of the spray head is achieved. Meanwhile, an electric field is generated between the external electric field electrode plates 2 at two sides of the discharge port 4, so that the directions of printing materials such as carbon nanotubes and nano gold rods are consistent, and the purpose of controlling the material discharge mode is achieved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (4)
1. The utility model provides a controllable 3D of temperature of automatically regulated ejection of compact mode prints shower nozzle which characterized in that includes: the device comprises a spray head shell (1), a biological charging module, a temperature control module, a spray nozzle diameter control module and an external electric field electrode plate (2);
the spray head shell (1) is a hollow cylinder with an opening at the bottom and a hole at the center of the top, a circular fixing plate (3) is fixed at the middle lower part of the inner wall of the spray head shell (1) to form a discharge hole (4), and two heat dissipation holes (5) which are symmetrically distributed are formed in the spray head shell (1);
the biological charging module comprises a charging barrel (6) and an extrusion piston (7), the charging barrel (6) is a hollow circular tube, the charging barrel is concentrically sleeved in the sprayer shell (1) and fixed on the annular fixing plate (3), and the extrusion piston (7) is sleeved in the charging barrel (6);
the temperature control module comprises a resistance wire (8) and a heat conduction layer (9), the resistance wire (8) is uniformly wound on the outer wall of the heat conduction layer (9), and the heat conduction layer (9) is sleeved outside the charging barrel (6) and is tightly attached to the outer wall of the charging barrel (6);
the nozzle diameter control module comprises three convergence sheets (10) and three compression springs (11), the three convergence sheets (10) are tightly attached to each other to form an inverted cone with an open top, the three convergence sheets (10) are respectively connected with the discharge hole (4) through rotating shafts, and the three compression springs (11) are respectively fixed between the three convergence sheets (10) and the inner wall of the sprayer housing (1); three convergence pieces (10) and three compression springs (11) arranged between the three convergence pieces (10) and the sprayer shell realize that the opening diameter of the sprayer is variable;
the cross section of each convergence sheet (10) is Z-shaped, and the three convergence sheets (10) are mutually overlapped and tightly attached;
the two external electric field electrode plates (2) are symmetrically embedded at the bottom of the inner wall of the sprayer housing (1);
the external electric field electrode plates (2) apply an electric field, and the consistency of the discharge of the biological materials is realized by controlling the material discharge mode through the electric field.
2. The temperature-controllable 3D printing spray head capable of automatically adjusting the discharging mode according to claim 1, characterized in that: the temperature control module further comprises a temperature sensor (12) and a main control module, the temperature sensor (12) is welded on the inner wall of the heat conduction layer (9), the temperature sensor (12) is connected with the input end of the main control module, and the output end of the main control module is connected with a heating control switch of the temperature control module.
3. The temperature-controllable 3D printing spray head capable of automatically adjusting the discharging mode according to claim 2, characterized in that: the temperature sensor (12) is a contact temperature sensor.
4. The temperature-controllable 3D printing spray head capable of automatically adjusting the discharging mode according to claim 2, characterized in that: the temperature control module further comprises two heat dissipation fans (13) which are respectively embedded in the two heat dissipation holes (5) on the sprayer shell (1), and control switches of the two heat dissipation fans (13) are connected with the output end of the main control module in the temperature control module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476124.5A CN108501373B (en) | 2018-05-17 | 2018-05-17 | Temperature-controllable 3D printing spray head capable of automatically adjusting discharging mode |
| US16/362,803 US10434713B1 (en) | 2018-05-15 | 2019-03-25 | Printhead device for 3D bio-printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810476124.5A CN108501373B (en) | 2018-05-17 | 2018-05-17 | Temperature-controllable 3D printing spray head capable of automatically adjusting discharging mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108501373A CN108501373A (en) | 2018-09-07 |
| CN108501373B true CN108501373B (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810476124.5A Active CN108501373B (en) | 2018-05-15 | 2018-05-17 | Temperature-controllable 3D printing spray head capable of automatically adjusting discharging mode |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE544535C2 (en) | 2020-09-02 | 2022-07-05 | Cellink Bioprinting Ab | Material cartridge arrangement for a dispensing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104441651B (en) * | 2014-05-31 | 2016-10-05 | 福州大学 | A kind of shower nozzle of the 3D printer of controlled diameter |
| CN105538715A (en) * | 2016-01-05 | 2016-05-04 | 杭州捷诺飞生物科技有限公司 | High-temperature printing spray head and 3D printing equipment applying same |
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- 2018-05-17 CN CN201810476124.5A patent/CN108501373B/en active Active
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| CN108501373A (en) | 2018-09-07 |
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Effective date of registration: 20240510 Address after: Room 703, Building 1, No. 430 Miaoqiao Road, Pudong New Area, Shanghai, 201315 Patentee after: Lanbaotai (Shanghai) Biopharmaceutical Co.,Ltd. Country or region after: China Address before: 030024 No. 79 West Main Street, Wan Berlin District, Shanxi, Taiyuan, Yingze Patentee before: Taiyuan University of Technology Country or region before: China |
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