CN107283819B - A kind of 3D printing equipment and Method of printing towards high molecular weight silicon rubber - Google Patents
A kind of 3D printing equipment and Method of printing towards high molecular weight silicon rubber Download PDFInfo
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- CN107283819B CN107283819B CN201710582485.3A CN201710582485A CN107283819B CN 107283819 B CN107283819 B CN 107283819B CN 201710582485 A CN201710582485 A CN 201710582485A CN 107283819 B CN107283819 B CN 107283819B
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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
- B33Y10/00—Processes of additive manufacturing
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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
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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
- B33Y70/00—Materials specially adapted for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
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Abstract
A kind of 3D printing equipment and Method of printing towards high molecular weight silicon rubber, 3D printing head system uses hundred micron order micropore nozzles of the screw extruding power with high-rate of shear and high crushing strength, the kinematic viscosity for greatly reducing high molecular weight silicon rubber realizes the 3D printing molding of high molecular weight, high compression modulus and high service life silastic material；Extrusion and swell stability of the material at hundred micron order micropore nozzles are improved, the dimensional accuracy of 3D printing fluid line is accurately controlled, realizes high quality, high-precision and the high efficiency of 3D printing process；In such a way that optical and thermal second order solidifies 3D printing material, the solidification rate and dimensional accuracy of 3D printing material is greatly improved, improves the high quality stability of 3D printing high molecular weight silastic material, realizes the macro property and adjustability of structure of 3D printing material.
Description
Technical field
The present invention relates to heavy viscous material 3D printing technique fields, and in particular to a kind of 3D towards high molecular weight silicon rubber
Printing device and Method of printing.
Background technique
Existing silicon rubber 3D printing system is the increasing material manufacturing system based on 3DP printing technique (drop injection), is relied on
It is preferable to squeeze out low molecular weight, low viscosity and mobility by printing nozzle micropore for material self gravity or the effect of piston press power
Silicon rubber drop or fluid, drop or fluid mutually blend into streamline and ultra-violet curing elastomer-forming rapidly, can print
Regulate and control the spatial distribution of printed droplets and fluid in journey, thus prepare porous with macro property and structure controllability or
Solid silicone rubber products.However, existing silicon rubber 3D printing method has the following problems:
One, existing silicon rubber 3D printing method mostly uses greatly the conventional ink-jet printing nozzle in 3DP printing technique, due to
By material self gravity and the lesser limitation of piston extrusion force, it is preferable that low molecular weight, low viscosity and mobility can only be printed
Silicon rubber, and itself poor flexibility, compression modulus are low, and the silastic material brittleness printed is larger, easy curling, it is difficult in work
Large-scale application in industry.
Two, existing silicon rubber 3D printing method relies on two kinds of molding modes of material self gravity and piston extrusion pressure,
Therefore the material density printed is lower, and discharges slowly, and shaping efficiency is lower, while being difficult to accurately control 3D printing drop
With dimensional accuracy of the fluid after nozzle extrusion and swell, the high quality, high-precision and high efficiency of 3D printing process cannot achieve.
Three, existing silicon rubber 3D printing method is solidified by ultraviolet light, and curing efficiency and degree are lower, it is difficult to
Rapid curing is formed in short time, and the easy crosslinking curing in region in a fluid at the heart is not thorough, to influence silicon rubber printing
The quality stability of product.
Summary of the invention
In order to overcome above-mentioned prior art application disadvantage, it is an object of that present invention to provide one kind towards high molecular weight silicon rubber
3D printing equipment and Method of printing, high molecular weight, high intensity and highly viscous silicon rubber are prepared by novel printing device
Material, and realize the macro property and adjustability of structure of 3D printing material.
In order to achieve the above object, the present invention adopts the following technical scheme that:
A kind of 3D printing equipment towards high molecular weight silicon rubber, the three-dimensional including connecting in 3D printer rack 7 are mobile
Plateform system 6 is equipped with 3D printer substrate 5 in three-dimensional mobile platform system 6, and the top of 3D printer substrate 5 is beaten equipped with 3D
Print head system 1, photocuring controller 3 and heat cure controller 4,3D printing head system 1, photocuring controller 3, heat cure control
Device 4 and three-dimensional mobile platform system 6 and 3D printer control cabinet 2 connect；
The 3D printing head system 1 has 100 μm -150 μm hundred micron-sized nozzle microcellular structures, realizes high molecular weight
The extrusion function of high viscosity macromolecule silicon rubber.
The 3D printer control cabinet 2 realizes accurate micro- extrusion process control, movement control using PID control technology
System, temperature control and optical and thermal second order solidify control, the accurate compensation of macro-size and control.
Silastic material after 3 pairs of the photocuring controller printings carries out rapid photocuring crosslinked action；Described
Silastic material after 4 pairs of heat cure controller printings carries out rapid thermosetting crosslinked action.
The material surface of the 3D printer substrate 5 has wetability, and micro- extrudate can on 3D printer substrate 5
Support own wt.
The 3D printing head system 1 includes hundred micron order micropore nozzles 8, and hundred micron order micropore nozzles 8 are connected to screw rod
One end of extruding cavity 10, the inside of Screw Extrusion chamber 10 are equipped with screw rod 9, the other end and silastic material of Screw Extrusion chamber 10 into
Material mouth 11 connects, power intake and linear motor 13 connection of screw rod 9, is equipped with outside screw rod 9 and 13 junction of linear motor
Cooler bin 12.
Hundred micron order micropore nozzles, 8 micro-pore diameter is 100 μm -150 μm.
9 diameter of screw rod is 20mm, draw ratio 20:1.
It is 2.2KW that the linear motor 13, which provides power, and extrusion pressure is the power of 150MPa,
A kind of 3D printing method towards high molecular weight silicon rubber, comprising the following steps:
1) 3D printing data processing: by the digital three-dimensional model that need to be printed handle for individual-layer data, Route Planning Data,
Optical and thermal curing process data, by treated, data are imported in 3D printer control cabinet 2, and send data to 3D printing head
System 1, photocuring controller 3, heat cure controller 4, three-dimensional mobile platform system 6；
2) 3D printing experimental material prepare: select molecular weight for 100,000-100 ten thousand high viscoplasticity silicone materials, and
Supporting material, light curing agent is added, printed material is packed into the Screw Extrusion of 3D printing head system 1 by feed of silicone mouth 11
In chamber 10；
3) hundred micron order micropore extrusion process: the linear motor 13 in 3D printing head system 1 drives screw rod 9 to 3D printing material
Material carries out spiral shearing, silastic material be squeezed power and by hundred micron order micropore nozzles 8,3D printer control cabinet 2 into
The control of row micropore procession parameters and printing precision, in print procedure, cooler bin 12 carries out reality to 3D printing head system 1
When it is cooling；
4) optical and thermal second order curing process: 3D printing head system 1 is squeezed by photocuring controller 3 and heat cure controller 4
Silicon rubber fluid out carries out the solidification of optical and thermal second order, and 3D printer control cabinet 2 carries out optical and thermal second order curing process parameter and consolidates
Change the control of precision；
5) 5 coordinated movement of various economic factors of 3D printer substrate: 3D printer control cabinet 2 is by coordinating 3D printing head system 1,3D printer
The relative position of 6 three of substrate 5 and three-dimensional mobile platform system, printer model needed for gradually layering is accumulated out；
6) step 3)-step 5) is repeated, until part Layered manufacturing is completed.
Advantages of the present invention:
The present invention is sprayed by using the hundred micron order micropores with high-rate of shear and the screw extruding power of high crushing strength
Mouth 8 can greatly reduce the kinematic viscosity of high molecular weight silicon rubber, realize high molecular weight, high compression modulus and high service life silicon
The 3D printing of rubber material forms；Extrusion and swell stability of the material at hundred micron order micropore nozzles 8 can be greatly improved, it is quasi-
The really dimensional accuracy of control 3D printing fluid line, realizes high quality, high-precision and the high efficiency of 3D printing process；Using optical and thermal
Second order solidifies the mode of 3D printing material, and the solidification rate and dimensional accuracy of 3D printing material can be greatly improved, and improves 3D printing
The high quality stability of high molecular weight silastic material.
Detailed description of the invention
Fig. 1 is the 3D printing equipment schematic diagram of high molecular weight silicon rubber of the present invention.
Fig. 2 is the 3D printing head system schematic diagram of high molecular weight silicon rubber of the present invention.
Specific embodiment
Below in conjunction with drawings and examples, the present invention is described in further detail.
Referring to Fig.1, a kind of 3D printing equipment towards high molecular weight silicon rubber, including what is connected in 3D printer rack 7
Three-dimensional mobile platform system 6 is equipped with 3D printer substrate 5, the top of 3D printer substrate 5 in three-dimensional mobile platform system 6
Equipped with 3D printing head system 1, photocuring controller 3 and heat cure controller 4,3D printing head system 1, photocuring controller 3, heat
Solidify controller 4 and three-dimensional mobile platform system 6 and 3D printer control cabinet 2 connects.
The 3D printing head system 1 has the nozzle microcellular structure of hundred micron orders (100 μm -150 μm), realizes macromolecule
Measure the extrusion function of high viscosity macromolecule silicon rubber.
The 3D printer control cabinet 2 realizes accurate micro- extrusion process control, movement control using PID control technology
System, temperature control and optical and thermal second order solidify control, the accurate compensation of macro-size and control.
Silastic material after 3 pairs of the photocuring controller printings carries out rapid photocuring crosslinked action, improves material
Expect obdurability, realizes the dimensional accuracy controllability of printing-fluid.
Silastic material after 4 pairs of the heat cure controller printings carries out rapid thermosetting crosslinked action, improves material
Expect obdurability, realizes the dimensional accuracy controllability of printing-fluid.
The material surface of the 3D printer substrate 5 has wetability, and micro- extrudate can on 3D printer substrate 5
Support own wt.
The three-dimensional mobile platform system 6 realizes the accurate of micro- extrusion nozzle and three-dimensional mobile platform relative movement
Positioning, it is accurate to control 3D printing part size.
Referring to Fig. 2, the 3D printing head system 1 includes hundred micron order micropore nozzles 8, and hundred micron order micropore nozzles 8 are micro-
Bore dia is 100 μm -150 μm, and hundred micron order micropore nozzles 8 are connected to one end of Screw Extrusion chamber 10, Screw Extrusion chamber 10
Inside is equipped with screw rod 9, and 9 diameter of screw rod is 20mm, draw ratio 20:1, the other end and silastic material of Screw Extrusion chamber 10 into
Material mouth 11 connects, and 10 dischargeable capacity of Screw Extrusion chamber is 1L, and the power intake and linear motor 13 of screw rod 9 connect, straight-line electric
It is 2.2KW that machine 13, which provides power, and extrusion pressure is the power of 150MPa, is equipped with outside screw rod 9 and 13 junction of linear motor cold
But case 12.
Referring to Figures 1 and 2, a kind of 3D printing method towards high molecular weight silicon rubber, comprising the following steps:
1) 3D printing data processing: by the digital three-dimensional model that need to be printed handle for individual-layer data, Route Planning Data,
Optical and thermal curing process data, by treated, data are imported in 3D printer control cabinet 2, and send data to 3D printing head
System 1, photocuring controller 3, heat cure controller 4, three-dimensional mobile platform system 6；
2) 3D printing experimental material prepare: select molecular weight for 100,000-100 ten thousand high viscoplasticity silicone materials, and
Supporting material, light curing agent is added, printed material is packed into the Screw Extrusion of 3D printing head system 1 by feed of silicone mouth 11
In chamber 10；
3) hundred micron order micropore extrusion process: the linear motor 13 in 3D printing head system 1 drives screw rod 9 to 3D printing material
Material carries out spiral shearing, silastic material be squeezed power and by hundred micron order micropore nozzles 8,3D printer control cabinet 2 into
The control of row micropore procession parameters and printing precision, in print procedure, cooler bin 12 carries out reality to 3D printing head system 1
When it is cooling；
4) optical and thermal second order curing process: 3D printing head system 1 is squeezed by photocuring controller 3 and heat cure controller 4
Silicon rubber fluid out carries out the solidification of optical and thermal second order, and 3D printer control cabinet 2 carries out optical and thermal second order curing process parameter and consolidates
Change the control of precision；
5) 5 coordinated movement of various economic factors of 3D printer substrate: 3D printer control cabinet 2 is by coordinating 3D printing head system 1,3D printer
The relative position of 6 three of substrate 5 and three-dimensional mobile platform system, printer model needed for gradually layering is accumulated out；
6) step 3)-step 5) is repeated, until part Layered manufacturing is completed.
Claims (9)
1. a kind of 3D printing method towards high molecular weight silicon rubber, which comprises the following steps:
1) 3D printing data processing: the digital three-dimensional model that need to be printed is handled as individual-layer data, Route Planning Data, optical and thermal
Curing process data, by treated, data are imported in 3D printer control cabinet (2), and send data to 3D printing head system
(1), photocuring controller (3), heat cure controller (4), three-dimensional mobile platform system (6)；
2) 3D printing experimental material prepares: selecting molecular weight for 100,000-100 ten thousand high viscoplasticity silicone materials, and is added
Printed material is packed into the Screw Extrusion of 3D printing head system (1) by supporting material, light curing agent by feed of silicone mouth (11)
In chamber (10)；
3) hundred micron order micropore extrusion process: the linear motor (13) in 3D printing head system (1) drives screw rod (9) to 3D printing
Material carries out spiral shearing, and silastic material is squeezed power and passes through hundred micron order micropore nozzles (8), 3D printer control cabinet
(2) control of micropore procession parameters and printing precision is carried out, in print procedure, cooler bin (12) is to 3D printing head system
(1) it is cooled down in real time；
4) optical and thermal second order curing process: by photocuring controller (3) and heat cure controller (4) to 3D printing head system (1)
The silicon rubber fluid of extrusion carries out the solidification of optical and thermal second order, and 3D printer control cabinet (2) carries out optical and thermal second order curing process parameter
With the control for solidifying precision；
5) 3D printer substrate (5) coordinated movement of various economic factors: 3D printer control cabinet (2) is by coordinating 3D printing head system (1), 3D printing
The relative position of machine substrate (5) and three-dimensional mobile platform system (6) three, printer model needed for gradually layering is accumulated out；
6) step 3)-step 5) is repeated, until part Layered manufacturing is completed.
2. a kind of 3D printing equipment towards high molecular weight silicon rubber that 3D printing method according to claim 1 uses,
It is characterized by comprising the three-dimensional mobile platform system (6) connected on 3D printer rack (7), three-dimensional mobile platform systems (6)
On be equipped with 3D printer substrate (5), the top of 3D printer substrate (5) is equipped with 3D printing head system (1), photocuring controller
(3) it is moved with heat cure controller (4), 3D printing head system (1), photocuring controller (3), heat cure controller (4) and three-dimensional
Moving platform system (6) and 3D printer control cabinet (2) connection；
The 3D printing head system (1) has 100 μm -150 μm hundred micron-sized nozzle microcellular structures, realizes that high molecular weight is high
The extrusion function of viscosity macromolecule silicon rubber.
3. a kind of 3D printing equipment towards high molecular weight silicon rubber according to claim 2, it is characterised in that: described
3D printer control cabinet (2) using PID control technology realize accurate micro- extrusion process control, motion control, temperature control and
Optical and thermal second order solidifies control, the accurate compensation of macro-size and control.
4. a kind of 3D printing equipment towards high molecular weight silicon rubber according to claim 2, it is characterised in that: described
Photocuring controller (3) carries out rapid photocuring crosslinked action to the silastic material after printing；The heat cure controller
(4) rapid thermosetting crosslinked action is carried out to the silastic material after printing.
5. a kind of 3D printing equipment towards high molecular weight silicon rubber according to claim 2, it is characterised in that: described
The material surface of 3D printer substrate (5) has wetability, and micro- extrudate can support itself weight on 3D printer substrate (5)
Amount.
6. a kind of 3D printing equipment towards high molecular weight silicon rubber according to claim 2, it is characterised in that: described
3D printing head system (1) includes hundred micron order micropore nozzles (8), and hundred micron order micropore nozzles (8) are connected to Screw Extrusion chamber
(10) inside of one end, Screw Extrusion chamber (10) is equipped with screw rod (9), the other end and silastic material of Screw Extrusion chamber (10)
Feed inlet (11) connection, power intake and linear motor (13) connection of screw rod (9), screw rod (9) and linear motor (13) are even
It is external equipped with cooler bin (12) to meet place.
7. a kind of 3D printing equipment towards high molecular weight silicon rubber according to claim 6, it is characterised in that: described
Hundred micron order micropore nozzle (8) micro-pore diameters are 100 μm -150 μm.
8. a kind of 3D printing equipment towards high molecular weight silicon rubber according to claim 6, it is characterised in that: described
Screw rod (9) diameter is 20mm, draw ratio 20:1.
9. a kind of 3D printing equipment towards high molecular weight silicon rubber according to claim 6, it is characterised in that: described
It is 2.2KW that linear motor (13), which provides power, and extrusion pressure is the power of 150MPa.
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| CN201710582485.3A CN107283819B (en) | 2017-07-17 | 2017-07-17 | A kind of 3D printing equipment and Method of printing towards high molecular weight silicon rubber |
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| CN109553503B (en) * | 2018-12-19 | 2021-04-13 | 西安近代化学研究所 | Photothermal composite 4D printing device for explosives and powders and forming method |
| CN109762116B (en) * | 2019-01-28 | 2020-01-14 | 中国科学院兰州化学物理研究所 | Ultraviolet light-assisted curing direct-writing silicone rubber additive manufacturing method |
| DE102019110718A1 (en) * | 2019-04-25 | 2020-10-29 | Freudenberg Se | Additive manufacturing process for the production of a molded body made of elastomer |
| DK3983198T3 (en) | 2019-06-11 | 2023-05-30 | Trelleborg Sealing Solutions Germany Gmbh | PROCEDURE FOR 3D PRINTING OF AN ELASTOMERIC DEFORMABLE RUBBER BODY, IN PARTICULAR A RUBBER SEAL |
| CN111331837A (en) * | 2020-03-19 | 2020-06-26 | 合肥工业大学 | Moisture-curing silica gel 3D printer and printing method thereof |
| CN112895426B (en) * | 2021-01-20 | 2022-03-11 | 青岛理工大学 | Micro-nano 3D printing method for single-plate electrode electric field driven jet deposition |
| CN113733563B (en) * | 2021-08-31 | 2024-02-20 | 北京软体机器人科技股份有限公司 | Manufacturing method and device of 3D printed resistor type soft sensor |
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| CN106313505B (en) * | 2016-09-12 | 2019-02-19 | 宁波创导三维医疗科技有限公司 | A kind of two-component mixing silica gel 3D printer and its Method of printing |
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Inventor after: Zhao Meng Inventor after: Wang Yongxin Inventor after: Liang Jin Inventor after: Hou Xishuo Inventor before: Wang Yongxin Inventor before: Zhao Meng Inventor before: Liang Jin Inventor before: Hou Xishuo |
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Effective date of registration: 20230518 Address after: 710000, Building 102, 7th Floor, Jiawei Technology Industry Base, No. 99 Aerospace East Road, National Civil Aerospace Industry Base, Xi'an City, Shaanxi Province Patentee after: XI'AN LIANCHUANG ADVANCED MANUFACTURING PROFESSIONAL INCUBATOR CO.,LTD. Address before: Beilin District Xianning West Road 710049, Shaanxi city of Xi'an province No. 28 Patentee before: XI'AN JIAOTONG University |