CN107298860A - A kind of silica gel 3D printer and its Method of printing - Google Patents
A kind of silica gel 3D printer and its Method of printing Download PDFInfo
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- CN107298860A CN107298860A CN201710683949.XA CN201710683949A CN107298860A CN 107298860 A CN107298860 A CN 107298860A CN 201710683949 A CN201710683949 A CN 201710683949A CN 107298860 A CN107298860 A CN 107298860A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- 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
-
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
- C08K5/5419—Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/006—Additives being defined by their surface area
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
Abstract
The present invention relates to a kind of silica gel 3D printer and its Method of printing, including motion module, print module and software control system, the motion module includes frame, the X-axis electric module set in the frame along coordinate system direction, Y-axis electric module, Z axis electric module and the floor module on the Z axis electric module, the print module includes the pressure pot being sequentially connected with, glue dispensing valve and printing head, the printing head is fixed on Y-axis electric module by fixed plate, the floor module includes the printing supporting plate being fixed on the Z axis electric module and the print cup being fixed on the printing supporting plate, the print cup is built with silica gel stoste, the fully wrapped around silica gel curing catalysts extruded from printing head of the silica gel stoste, the software control system is to X-axis electric module, Y-axis electric module, Z axis electric module, glue dispensing valve carries out Control on Communication；The present invention need not add supporting construction, and silica gel structure printout surface quality is good.
Description
Technical field
The present invention relates to 3D printing field, and in particular to a kind of silica gel 3D printer and its Method of printing.
Background technology
3D printing technique is a kind of processing and manufacturing technology fast-developing in recent years, and zero is realized by way of increasing material manufacturing
The quick manufacture of part, with the process-cycle is short, stock utilization is high, the features such as the part with labyrinth can be processed.It is common
3D printing technique mainly have fusion sediment technology, Stereolithography technology, Selective Laser Sintering etc., but can not be real
The 3D printing of existing silica gel material.
In Chinese patent CN201610122318.6 silica gel 3D printer and silica gel product Method of printing, one is disclosed
Silica gel 3D printer and Method of printing are planted, is produced with solving not printing in the prior art with soft and elastic characteristic silica gel
The technical problem of product.Its technical characterstic mainly has at 2 points：One be printing head be by Pneumatic module control silica gel extrusion and
There is preheating to shower nozzle needle tubing；Two be the curing mode of silica gel, i.e., by setting cylindric heater, pin in print area surrounding
Printing silica gel heated in real-time solidification to each layer.
The patent is primarily present problem：Need to add necessary supporting construction in the print procedure of silica gel structure to complete silicon
Glue is printed, and the later stage of supporting construction removes printout surface quality that is relatively complicated and then can influenceing silica gel structure；Silica gel structure
In traditional 3D printing form, i.e., by line to face, successively accumulated and form by the mode in face to body, the printing type is less efficient,
It is difficult to the quick production requirement for meeting large scale entity silica gel model.
The content of the invention
In view of the drawbacks described above of prior art, the technical problems to be solved by the invention are to provide a kind of without addition support
Structure, silica gel structure printout surface quality good silica gel 3D printer and its Method of printing.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of silica gel stoste, comprising following component, is calculated in mass percent：
Basic glue, 2.4-59.9wt%,
Crosslinking agent, 23-69.2wt%,
Inserts, 10-30wt%,
The basic glue is to be at least with hydroxy-end capped line style polysiloxane, or the basic glue for degree of functionality
2 polysiloxanes containing vinyl ends or side base；The crosslinking agent is to be connected with acyloxy or hydrogen atom or hydroxyl on silicon atom
Organosiloxane, or the crosslinking agent be silicon-hydrogen bond containing oligosiloxane；The inserts is reinforcing or weak reinforcement
Property filler.
It is preferred that, described reinforcing or weak reinforcing filler is to be selected from initial size for 10-50nm and specific surface area 70-
400m2/ g reinforcing filler or initial size is 300-1000nm and specific surface area is in 30m2/ below g's is weak reinforcing
Filler.It is furthermore preferred that the inserts is white carbon, carbon black, calcium carbonate, silica flour, diatomite, zinc oxide, titanium dioxide.
It is preferred that, the silica gel stoste also includes tackifier, and the tackifier are silane coupler.
It is preferred that, silica gel stoste viscosity number scope under the conditions of 25 DEG C is 3000-100000cps, the silicon after solidification
Glue hardness is 0-50A, and tensile strength is 1-5MPa, and elongation is 170-1200%, and tearing strength is 3-26kN/m.
The present invention solves another technical scheme for being used of its technical problem：
A kind of silica gel 3D printer, including motion module, print module and software control system, the motion module include
Frame, in the frame along coordinate system direction set X-axis electric module, Y-axis electric module, Z axis electric module and
Floor module on the Z axis electric module, the print module is including the pressure pot being sequentially connected with, glue dispensing valve and beats
Shower nozzle is printed, the printing head is fixed on the Y-axis electric module by fixed plate, the floor module includes being fixed on institute
The printing supporting plate on Z axis electric module and the print cup being fixed on the printing supporting plate are stated, the print cup is built with silica gel
Stoste, the fully wrapped around silica gel curing catalysts extruded from the printing head of the silica gel stoste, the software control system
Control on Communication is carried out to the X-axis electric module, Y-axis electric module, Z axis electric module, glue dispensing valve.
It is preferred that, the floor module also includes fluid infusion module, and the fluid infusion module includes pump with being connected flexible pipe, the benefit
Liquid module is connected by the connection flexible pipe with the fluid infusion being arranged on the print cup, and the software control system is to fluid infusion
Module carries out Control on Communication.
It is preferred that, the silica gel stoste is consisted of the following composition：It is calculated in weight percent, it is poly- with hydroxy-end capped line style
Organosiloxane, or degree of functionality are at least glue, 2.4- based on 2 polysiloxanes containing vinyl ends or side base
59.9wt%, to be connected with the organosiloxane of acyloxy or hydrogen atom or hydroxyl on silicon atom, or silicon-hydrogen bond containing oligomeric silica
Alkane is crosslinking agent, 23-69.2wt%, using reinforcing or weak reinforcing filler as inserts, 10-30wt%.
It is preferred that, described reinforcing or weak reinforcing filler is to be selected from initial size for 10-50nm and specific surface area 70-
400m2/ g reinforcing filler or initial size is 300-1000nm and specific surface area is in 30m2/ below g's is weak reinforcing
Filler.It is furthermore preferred that the inserts is white carbon, carbon black, calcium carbonate, silica flour, diatomite, zinc oxide, titanium dioxide.
It is preferred that, the silica gel stoste also includes tackifier, and the tackifier are silane coupler.
It is preferred that, the X-axis electric module, Y-axis electric module, Z axis electric module are respectively included in X-axis motor, Y-axis horse
Reach, Z axis motor driving under respectively along X-axis, Y-axis, Z-direction slide X sliding blocks, Y sliding blocks, Z sliding blocks, the printing supporting plate consolidate
It is scheduled on the Z sliding blocks of the Z axis electric module, it is electronic that the printing head is fixed on the Y-axis by the fixed plate
On the Y sliding blocks of module.
It is preferred that, the floor module is additionally included in the equally distributed heating galvanic couple of inwall of the print cup, described to add
Thermocouple is fixed on the inwall of the print cup by high-temperature-resistant adhesive.
It is preferred that, the preheating temperature of the heating galvanic couple is 50-120 DEG C, and the silica gel curing catalysts are that Theil indices are
15-35wt% organo-tin compound or platinum content is 0.1-1wt% platinum compounds and its complex.
It is preferred that, the pressure pot is connected by flexible pipe with the charging aperture of the glue dispensing valve, the discharging opening of the glue dispensing valve
It is connected by flexible pipe with the printing head, the air inlet connection compressed air of the glue dispensing valve.
It is preferred that, the X-axis electric module includes X-axis motor, contiguous block, shaft coupling, screw rod, optical axis slide bar and X sliding blocks,
The contiguous block is fixed in the frame, and the X-axis motor is fixed on the contiguous block, and passes through the shaft coupling
It is connected with the screw rod, the optical axis slide bar is fixed on the contiguous block, the X sliding blocks pass through the transmission on the screw rod
Screw thread is moved in the X-axis direction along the optical axis slide bar.
It is preferred that, the software control system controls the air inlet of the glue dispensing valve by the communication interface of the glue dispensing valve
Air pressure, the software control system by control it is described heating galvanic couple to the floor module carry out Control on Communication.
It is preferred that, the compressed gas air pressure of the air inlet of the glue dispensing valve is 0.6-1.5MPa.
It is preferred that, the internal diameter of the printing head is 0.1-2mm, and extruded velocity is 0.001-1mL/s.
It is preferred that, the printing head is in the software control system to the X-axis electric module and the electronic mould of the Y-axis
Translational speed under the coordinated signals of block is 0.5-50mm/s.
The present invention solves the 3rd technical scheme being used of its technical problem：
A kind of Method of printing of silica gel 3D printer, comprises the following steps：
If the silica gel product is divided into by A, software control system according to the model data information of silica gel product to be printed
Dried layer；
B, elder generation load onto silica gel stoste in print cup, and the depth of the silica gel stoste is more than the height of silica gel product to be printed
Degree；
C, when print n-th layer when, the software control system according to the model data information of silica gel product to be printed control Z
The Z axis motor rotation of axle electric module drives Z sliding blocks and the floor module being fixed on the Z sliding blocks to move to n-th layer height,
Below the liquid level that printing head is placed in the silica gel stoste, control glue dispensing valve at a particular pressure by silica gel curing catalysts from
Pressure pot is extruded through the glue dispensing valve in the printing head, by the software control system to X-axis electric module and Y-axis electricity
Printing head is moved in ad-hoc location, the silica gel curing catalysts and the print cup of extrusion by the coordinated signals of dynamic model block
The silica gel stoste solidifies rapidly after fully reacting, the structure after solidification under the high viscosity support of the silica gel stoste it is natural into
Type, completes the printing of n-th layer silica gel structure；Then the software control system controls the Z axis motor rotation of the Z axis electric module
Turn to drive Z sliding blocks and the floor module being fixed on the Z sliding blocks to decline the height of a thickness, be transferred to N+1 layers and repeat
Step printing is stated until completing the silica gel product.
It is preferred that, in stepb, the silica gel stoste is consisted of the following composition：It is calculated in weight percent, sealed with hydroxyl
The line style polysiloxane at end, or degree of functionality are at least glue based on 2 polysiloxanes containing vinyl ends or side base,
2.4-59.9wt%, to be connected with the organosiloxane of acyloxy or hydrogen atom or hydroxyl on silicon atom, or silicon-hydrogen bond containing is oligomeric
Siloxanes is crosslinking agent, 23-69.2wt%, using reinforcing or weak reinforcing filler as inserts, 10-30wt%.
It is preferred that, described reinforcing or weak reinforcing filler is to be selected from initial size for 10-50nm and specific surface area 70-
400m2/ g reinforcing filler or initial size is 300-1000nm and specific surface area is in 30m2/ below g's is weak reinforcing
Filler.It is furthermore preferred that the inserts is white carbon, carbon black, calcium carbonate, silica flour, diatomite, zinc oxide, titanium dioxide.
It is preferred that, in stepb, the silica gel stoste also includes tackifier, and the tackifier are silane coupler；In step
In rapid C, the floor module is additionally included in the equally distributed heating galvanic couple of inwall of the print cup, and the heating galvanic couple passes through
High-temperature-resistant adhesive is fixed on the inwall of the print cup, the silica gel stoste is preheated by the heating galvanic couple, in advance
Hot temperature is 50-120 DEG C, and the silica gel curing catalysts are that the organo-tin compound or platinum that Theil indices are 15-35wt% contain
The platinum compounds and its complex for 0.1-1wt% are measured, the specified pressure of the glue dispensing valve is 0.6-1.5MPa, the printing spray
The internal diameter of head is 0.1-2mm, and extruded velocity is 0.001-1mL/s, and the printing head is in the software control system to the X
Translational speed under the coordinated signals of axle electric module and the Y-axis electric module is 0.5-50mm/s.
It is preferred that, in step C, fluid infusion module ensures that the silica gel stoste continues under software control system control
It is injected into the print cup, keeps the liquid level and the distance between printing head exit end face of the silica gel stoste constant.
It is furthermore preferred that the distance between the liquid level of the silica gel stoste and printing head exit end face are 0.2-10mm.
The present invention solves the 4th technical scheme being used of its technical problem：
A kind of Method of printing of silica gel 3D printer, comprises the following steps：
A, using model treatment software silica gel model inwardly carried out along normal taking out shell processing, obtained with certain wall thickness
Hollow shell structure, by the hollow shell structure importing 3D printing Slice Software handled, obtain the hollow shell structure or
The 3D printer motion control file of physical model, is inputted in the silica gel 3D printer；
The silica gel stoste of certain depth is pre-charged with B, print cup, the silica gel stoste to print cup and its inside is arranged
Gas disposal, removes air entrapment, sets printing head starting point, and printing head is inserted in silica gel stoste, sets in print cup
Plus electric thermo-couple temperature, silica gel stoste is preheated to set temperature；
C, when print n-th layer when, the software control system according to the model data information of silica gel product to be printed control Z
The Z axis motor rotation of axle electric module drives Z sliding blocks and the floor module being fixed on the Z sliding blocks to move to n-th layer height,
Below the liquid level that printing head is placed in the silica gel stoste, control glue dispensing valve at a particular pressure by silica gel curing catalysts from
Pressure pot is extruded through the glue dispensing valve in the printing head, by the software control system to X-axis electric module and Y-axis electricity
Printing head is moved in ad-hoc location, the silica gel curing catalysts and the print cup of extrusion by the coordinated signals of dynamic model block
The silica gel stoste solidifies rapidly after fully reacting, the structure after solidification under the high viscosity support of the silica gel stoste it is natural into
Type, completes the printing of n-th layer silica gel structure, and fluid infusion module ensures that the silica gel stoste is held under software control system control
It is continuous to be injected into print cup, keep silica gel stoste liquid level and the distance between printing head exit end face constant；It is then described soft
Part control system controls the Z axis motor rotation of the Z axis electric module to drive Z sliding blocks and the bottom plate being fixed on the Z sliding blocks
Module declines the height of a thickness, is transferred to the N+1 layers of printing that repeats the above steps until completing the silica gel product；
D, the hollow silica gel shell of printing shaping taken out from print cup, the silica gel stoste of processing enclosure surface residual,
Shell is subjected to secondary solidification under the high temperature conditions, the silica gel stoste and shell solidification for making enclosure are integrated, so as to realize
The quick manufacture of entity silica gel product.
It is preferred that, in stepb, the silica gel stoste is consisted of the following composition：It is calculated in weight percent, sealed with hydroxyl
The line style polysiloxane at end, or degree of functionality are at least glue based on 2 polysiloxanes containing vinyl ends or side base,
2.4-59.9wt%, to be connected with the organosiloxane of acyloxy or hydrogen atom or hydroxyl on silicon atom, or silicon-hydrogen bond containing is oligomeric
Siloxanes is crosslinking agent, 23-69.2wt%, using reinforcing or weak reinforcing filler as inserts, 10-30wt%.
It is preferred that, described reinforcing or weak reinforcing filler is to be selected from initial size for 10-50nm and specific surface area 70-
400m2/ g reinforcing filler or initial size is 300-1000nm and specific surface area is in 30m2/ below g's is weak reinforcing
Filler.It is furthermore preferred that the inserts is white carbon, carbon black, calcium carbonate, silica flour, diatomite, zinc oxide, titanium dioxide.
It is preferred that, in stepb, the silica gel stoste also includes tackifier, and the tackifier are silane coupler；In step
In rapid C, the floor module is additionally included in the equally distributed heating galvanic couple of inwall of the print cup, and the heating galvanic couple passes through
High-temperature-resistant adhesive is fixed on the inwall of the print cup, the silica gel stoste is preheated by the heating galvanic couple, in advance
Hot temperature is 50~120 DEG C, and described hollow mold volume and the ratio of its physical model volume are 10%~50%, the silicon
Adhesive curing catalyst is the platinum chemical combination that the organo-tin compound that Theil indices are 15~35wt% or platinum content are 0.1~1wt%
Thing and its complex, the specified pressure of the glue dispensing valve is 0.6~1.5MPa, and the internal diameter of the printing head is 0.1~2mm,
Extruded velocity is 0.001~1mL/s, and the printing head is in the software control system to the X-axis electric module and the Y
Translational speed under the coordinated signals of axle electric module is 0.5~50mm/s, in step C, in the software control system control
The fluid infusion module ensures that the silica gel stoste is persistently injected into the print cup under system, keeps the liquid level of the silica gel stoste
It is 0.2~10mm with the distance between printing head exit end face.
Compared with the existing technology, advantages of the present invention and progress are as follows：
1st, the present invention is in the way of printing head immersion, to use highly viscous silica gel stoste for printing, backing material,
Coordinate the acceleration solidification printing shaping of silica gel curing catalysts again, due to silica gel knot of the highly viscous silica gel stoste to solidification
Structure has natural support effect, so need not print corresponding supporting construction for hanging silica gel structure in print procedure, beats
Print directly takes out the silica gel product of shaping after completing from print cup, and allows the silica gel stoste on its surface to trickle solid naturally
Change, so as to eliminate printing silica gel supporting construction, silica gel structure print quality can be effectively improved.
2nd, it is of the invention that silica gel stoste is preheated by uniformly pasting heating galvanic couple in print cup inwall, Ke Yiti
The effect of high solidification.
3. the present invention carries out taking out after shell processing for large scale entity silica gel product, it need to only print with certain wall thickness
Empty silica gel shell, reduces the time of silica gel 3D printing, coordinates high temperature secondary solidification to make the silica gel in hollow silica gel enclosure cavity
Stoste is integrated with shell solidification, can increase substantially the production efficiency of large scale entity silica gel product.
4. the present invention carries out sustaining supply using fluid infusion module to the stoste in print cup, it can carry out with large scale height
Silica gel model printing.
Brief description of the drawings
Fig. 1 is the structural representation of silica gel 3D printer；
Fig. 2 is the partial enlarged drawing of glue dispensing valve；
Fig. 3 is the partial enlarged drawing of X-axis electric module；
Fig. 4 is the partial enlarged drawing of floor module；
Fig. 5 is the partial enlarged drawing of printing head；
Fig. 6 is the structural representation of another embodiment of silica gel 3D printer；
Fig. 7 is to take out the hollow circuit cylinder model after shell processing；
Fig. 8 is the solid cylindrical model after secondary solidification.
Wherein, 1 is frame, and 2 be X-axis electric module, and 3 be Y-axis electric module, and 4 be Z axis electric module, and 5 be pressure pot, 6
It is glue dispensing valve, 7 be printing head, and 8 be floor module, and 9 be discharging opening, and 10 be communication interface, and 11 be charging aperture, and 12 be air inlet
Mouthful, 13 be optical axis slide bar, and 14 be screw rod, and 15 be shaft coupling, and 16 be contiguous block, and 17 be X-axis motor, and 18 be X sliding blocks, and 19 be printing
Supporting plate, 20 be print cup, and 21 be heating galvanic couple, and 22 be fixed plate, and 23 be fluid infusion module, and 24 be fluid infusion, and 25 be silica gel model
The silica gel stoste wrapped up after shell solidification, 26 be the silica gel model shell after solidification.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, develop simultaneously embodiment referring to the drawings
The present invention is described in detail.
Silica gel stoste is prepared according to following components, is calculated in mass percent：Basic 2.4~59.9wt% of glue, crosslinking agent 23
~69.2wt%, 10~30wt% of inserts, the basic glue are with hydroxy-end capped line style polysiloxane, or degree of functionality
At least 2 polysiloxanes containing vinyl ends or side base；The crosslinking agent is to be connected with acyloxy or hydrogen atom on silicon atom
Or the organosiloxane of hydroxyl, or silicon-hydrogen bond containing oligosiloxane；The inserts is reinforcing or weak reinforcing filler.
Described reinforcing or weak reinforcing filler is to be selected from initial size for 10~50nm and 70~400m of specific surface area2/ g reinforcement
Property filler or initial size be the weak reinforcing filler of 300~1000nm and specific surface area in below 30m/g, it is described to fill out
Charge is preferably white carbon, carbon black, calcium carbonate, silica flour, diatomite, zinc oxide, titanium dioxide.
Embodiment 1：The glue based on hydroxy-end capped line style polysiloxane, mass ratio is 46.4wt%；It is former with silicon
The organosiloxane that acyloxy is connected with son is crosslinking agent, and mass ratio is 23wt%；By 300nm of initial size, specific surface area
For 29.4m2/ g calcium carbonate is inserts, and mass ratio is 30wt%；Surplus is the tackifier of silane coupler.
Viscosity number is 54000cps at 25 DEG C after obtained silica gel stoste is well mixed, and (continue silica gel hardness you after solidification
(A) it is) 50, tensile strength is：5MPa, elongation is：170%, tearing strength is：26kN/m.
Embodiment 2：The glue based on hydroxy-end capped line style polysiloxane, mass ratio is 2.4wt%；With silicon atom
On be connected with hydrogen atom organosiloxane be crosslinking agent, mass ratio is 69.2wt%；By 50nm of initial size, specific surface area be
70m2/ g carbon black is inserts, and mass ratio is 27.9wt%；Surplus is the tackifier of silane coupler.
Viscosity number is 3000cps at 25 DEG C after obtained silica gel stoste is well mixed, silica gel hardness after solidification (continue your (A))
For 40, tensile strength is：4.3MPa, elongation is：240%, tearing strength is：24.1kN/m.
Embodiment 3：The glue based on hydroxy-end capped line style polysiloxane, mass ratio is 25.8wt%；It is former with silicon
The organosiloxane that hydroxyl is connected with son is crosslinking agent, and mass ratio is 58.3wt%；By 10nm of initial size, specific surface area be
400m2/ g white carbon is inserts, and mass ratio is 15.8wt%；Surplus is the tackifier of silane coupler.
Viscosity number is 75000cps at 25 DEG C after obtained silica gel stoste is well mixed, and (continue silica gel hardness you after solidification
(A) it is) 25, tensile strength is：1.8MPa, elongation is：460%, tearing strength is：15.6kN/m.
Embodiment 4：It is glue based on 2 polysiloxanes containing vinyl ends by degree of functionality, mass ratio is 59.9wt%；
Using the oligosiloxane of silicon-hydrogen bond containing as crosslinking agent, mass ratio is 26.3wt%；By 750nm of initial size, specific surface area be
7.8m2/ g silica flour is inserts, and mass ratio is 13.5wt%；Surplus is the tackifier of silane coupler.
Viscosity number is 100000cps at 25 DEG C after obtained silica gel stoste is well mixed, and (continue silica gel hardness you after solidification
(A) it is) 30, tensile strength is：1.6MPa, elongation is：730%, tearing strength is：8.3kN/m.
Embodiment 5：It is glue based on 2 polysiloxanes containing vinyl group pendant by degree of functionality, mass ratio is 44.5wt%；
Using the oligosiloxane of silicon-hydrogen bond containing as crosslinking agent, mass ratio is 45wt%；By 1000nm of initial size, specific surface area be
1.4m2/ g diatomite is inserts, and mass ratio is 10wt%；Surplus is the tackifier of silane coupler.
Viscosity number is 50000cps at 25 DEG C after obtained silica gel stoste is well mixed, and (continue silica gel hardness you after solidification
(A) it is) 0, tensile strength is：1MPa, elongation is：1200%, tearing strength is：3kN/m.
Embodiment 6：It is glue based on 10 polysiloxanes containing vinyl group pendant by degree of functionality, mass ratio is
42.5wt%；Using the oligosiloxane of silicon-hydrogen bond containing as crosslinking agent, mass ratio is 38.4wt%；By 530nm of initial size, compare
Surface area is 21m2/ g zinc oxide is inserts, and mass ratio is 18.7wt%；Surplus is the tackifier of silane coupler.
Viscosity number is 45000cps at 25 DEG C after obtained silica gel stoste is well mixed, and (continue silica gel hardness you after solidification
(A) it is) 35, tensile strength is：2.9MPa, elongation is：410%, tearing strength is：18.4kN/m.
Embodiment 7：The glue based on hydroxy-end capped line style polysiloxane, mass ratio is 38.8wt%；It is former with silicon
The organosiloxane that hydroxyl is connected with son is crosslinking agent, and mass ratio is 39.4wt%；By 630nm of initial size, specific surface area
For 13.6m2/ g titanium dioxide is inserts, and mass ratio is 21.8wt%.
Viscosity number is 43000cps at 25 DEG C after obtained silica gel stoste is well mixed, and (continue silica gel hardness you after solidification
(A) it is) 35, tensile strength is：4.0MPa, elongation is：280%, tearing strength is：22.9kN/m.
As shown in figure 1, a kind of silica gel 3D printer, including motion module, print module and software control system, the fortune
Dynamic model block include frame 1, in the frame 1 along coordinate system direction set X-axis electric module 2, Y-axis electric module 3,
Z axis electric module 4 and the floor module 8 on the Z axis electric module 4, the print module include what is be sequentially connected with
Pressure pot 5, glue dispensing valve 6 and printing head 7, as shown in Figure 5：The printing head 7 is fixed on the electronic mould of Y-axis by fixed plate 22
On block 3, as shown in Figure 4：The floor module 8 includes the printing supporting plate 19 being fixed on the Z axis electric module 4 and is fixed on
Print cup 20 on the printing supporting plate 19, the inwall that the floor module 8 is additionally included in the print cup 20 is equally distributed
Galvanic couple 21 is heated, the heating galvanic couple 21 is fixed on the inwall of the print cup 20 by high-temperature-resistant adhesive.The print cup
20 built with hydroxy-end capped line style polysiloxane, or degree of functionality be at least 2 it is poly- containing vinyl ends or side base
Glue based on siloxanes, 2.4~59.9wt%, to be connected with the organosiloxane of acyloxy or hydrogen atom or hydroxyl on silicon atom,
Or the oligosiloxane of silicon-hydrogen bond containing be crosslinking agent, 23~69.2wt%, using reinforcing or weak reinforcing filler as inserts,
10~30wt% silica gel stoste, tackifier are added by practical viscosity situation in good time, and the silica gel stoste is fully wrapped around from described
The silica gel curing catalysts that printing head 7 is extruded, the preheating temperature of the heating galvanic couple 21 is 50~120 DEG C, the silica gel solid
Change the platinum compounds for 0.1~1wt% of organo-tin compound or platinum content that catalyst is 15~35wt% of Theil indices and its match somebody with somebody
Compound.The software control system to the X-axis electric module 2, Y-axis electric module 3, Z axis electric module 4, glue dispensing valve 6, plus
Thermocouple 21 carries out Control on Communication.
Position wherein between X-axis electric module 2, Y-axis electric module 3, the component parts of Z axis electric module 4 and all parts
Annexation is put similar, by taking X-axis electric module 2 as an example, as shown in figure 3, it includes X-axis motor 17, contiguous block 16, shaft coupling
15th, screw rod 14, optical axis slide bar 13 and X sliding blocks 18, the contiguous block 16 are fixed by screws in frame 1, the X-axis motor 17
It is fixed on contiguous block 16, is connected X-axis motor 17 with screw rod 14 by screw by shaft coupling 15, optical axis slide bar 13 passes through spiral shell
Line is fixed on contiguous block 16, and X sliding blocks 18 can be transported by the motion thread on screw rod 14 along optical axis slide bar 13 to X-direction
It is dynamic.
Y-axis electric module 3 is by Y-axis motor, Y-axis contiguous block, Y-axis screw rod, Y-axis shaft coupling, Y-axis optical axis slide bar and Y sliding blocks
Composition, the Y-axis contiguous block is fixed by screws in frame 1, and the Y-axis motor is fixed on Y-axis contiguous block by screw,
Y-axis motor is connected with Y-axis screw rod by Y-axis shaft coupling, Y-axis optical axis slide bar is threadedly secured on Y-axis contiguous block, Y is slided
Block can be moved by the motion thread on Y-axis screw rod along Y-axis optical axis slide bar to Y direction.
Z axis electric module 4 is by Z axis motor, Z axis contiguous block, Z axis screw rod, Z axis shaft coupling, Z axis optical axis slide bar and Z sliding blocks
Composition, the Z axis contiguous block is fixed by screws in frame 1, and the Z axis motor is fixed on Z axis contiguous block by screw,
Z axis motor is connected with Z axis screw rod by Z axis shaft coupling, Z axis optical axis slide bar is threadedly secured on Z axis contiguous block, Z is slided
Block can be moved by the motion thread on Z axis screw rod along Z axis optical axis slide bar to Z-direction.
As shown in Fig. 2 the pressure pot 5 is connected by flexible pipe with the charging aperture 11 of the glue dispensing valve 6, the glue dispensing valve 6
Discharging opening 9 be connected by flexible pipe with the printing head 7, the air inlet 12 of the glue dispensing valve 6 connection compressed air is described soft
Part control system controls the air pressure of the air inlet 12 of glue dispensing valve 6 by the communication interface 10 of the glue dispensing valve 6.
Present invention printing silica gel model is carried out by the way of successively printing, and each layer working method is similar, software control system
If the silica gel product is divided into dried layer by system according to the model data information of silica gel product to be printed, specifically printed to n-th layer
Example：Silica gel stoste is first loaded onto in print cup 20, the depth of the silica gel stoste is more than the height of silica gel product to be printed；Software
The heating-up temperature of control system control heating galvanic couple 21 is preheated to the silica gel stoste, and preheating temperature is 50~120 DEG C；It is soft
Part control system is according to the n-th layer structure height obtained by computer aided design and manufacture software, control Z axis electric module 4
The rotation of Z axis motor, drive Z sliding blocks and floor module 8 thereon to move to corresponding height, printing head 7 is submerged to described beat
Print in the silica gel stoste in groove 20, as shown in Figure 2：Air inlet 12 is controlled to adjust compressed gas by the communication interface 10 of glue dispensing valve 6
Body air pressure (0.6Mpa to 1.5MPa), by 0.1~1wt%'s of 15~35wt% of Theil indices organo-tin compound or platinum content
Platinum compounds and its complex are squeezed into glue dispensing valve 6 from pressure pot 5 by charging aperture 11, so from internal diameter be 0.1mm to 2mm
In the range of printing head 7 in extrude, extruded velocity scope be 0.001mL/s to 1mL/s；Swept according to the filling of n-th layer structure
Path is retouched, software control system control X-axis electric module 2 links with Y-axis electric module 3 completes the movement of printing head 9, mobile
Velocity interval is 0.5mm/s to 50mm/s；After the silica gel curing catalysts printed react with the silica gel stoste in print cup 20
Rapid solidification, the structure after solidification is maintained at the position in stoste by the supporting role of silica gel stoste, completes n-th layer silica gel knot
The printing of structure；Then the software control system controls the Z axis motor rotation of the Z axis electric module 4 to drive Z sliding blocks and fixation
Floor module 8 on the Z sliding blocks declines the height of a thickness (0.1 to 0.4mm), is transferred to the printing of N+1 Rotating fields, directly
Print and complete to the silica gel product；Because highly viscous silica gel stoste has natural support effect, institute to the silica gel structure of solidification
So that in print procedure corresponding supporting construction need not be printed for hanging silica gel structure；By the silica gel product after printing completion
Model directly taken out from print cup 20, and allow the silica gel stoste on its surface to trickle naturally solidification, be finally completed silica gel production
The model manufacturing of product.
In another embodiment of the invention, as shown in fig. 6, the difference with the silica gel 3D printer shown in Fig. 1-5
Part is：The floor module 8 also includes fluid infusion module 23, and the fluid infusion module 23 includes pump with being connected flexible pipe, the benefit
Liquid module 23 is connected by connecting fluid infusion 24 of the flexible pipe with being arranged on the print cup.The software control system is to described
Fluid infusion module 23 carries out Control on Communication.The fluid infusion module 23 ensures the silica gel stoste under software control system control
Persistently it is injected into the print cup, keeps the distance between the liquid level and printing head exit end face of silica gel stoste perseverance
It is fixed.In a preferred embodiment, the distance between the liquid level of the silica gel stoste and printing head exit end face for 0.2~
10mm。
In embodiment as shown in Figure 6, the present invention prints silica gel model by the way of successively printing, and the present invention is adopted
Cylinder model inwardly carried out along normal with model treatment software to take out shell processing, hollow shell structure, the hollow shell knot is obtained
The volume of structure accounts for former physical model volume 10%~50%, should be exemplified by printing cylindrical solid, and the volume of hollow circuit cylinder model is accounted for
Former physical model volume 30%, hollow circuit cylinder model importing 3D printing Slice Software is handled, the hollow circuit cylinder is obtained
The 3D printer motion control file of model, is inputted in the silica gel 3D printer, each layer working method is similar, specifically with N
Exemplified by layer printing：The silica gel stoste of certain depth is first loaded onto in print cup 20, the silica gel stoste to print cup and its inside is entered
Row pump-down process, removes air entrapment；The heating-up temperature of software control system control heating galvanic couple 21 is entered to the silica gel stoste
Row preheating, preheating temperature is 50~120 DEG C；Software control system is according to obtained by computer aided design and manufacture software
N Rotating fields height, the Z axis motor rotation of control Z axis electric module 4 drives Z sliding blocks and floor module 8 thereon to move to phase
Should highly, printing head 7 is submerged in the silica gel stoste in the print cup 20, as shown in Figure 2：Pass through the communication of glue dispensing valve 6
The control regulation compressed gas air pressure of air inlet 12 of interface 10 (0.6Mpa to 1.5MPa), by 15~35wt% of Theil indices organotin
0.1~1wt% of compound or platinum content platinum compounds and its complex squeezes into dispensing from pressure pot 5 by charging aperture 11
In valve 6, so from internal diameter be 0.1mm to 2mm in the range of printing head 7 in extrude, extruded velocity scope be 0.001mL/s extremely
Silica gel stoste from fluid infusion 24 persistently injects print cup, is kept silica gel stoste liquid level to be sprayed with printing by 1mL/s, fluid infusion module 23
Constant the distance between head exit end face is 0.2~10mm；According to the filling scanning pattern of n-th layer structure, software control system
Control X-axis electric module 2 to be linked with Y-axis electric module 3 and complete the movement of printing head 9, translational speed scope be 0.5mm/s extremely
50mm/s；The silica gel curing catalysts printed after the silica gel stoste reaction in print cup 20 with solidifying rapidly, the knot after solidification
Structure is maintained at the position in stoste by the supporting role of silica gel stoste, completes the printing of n-th layer silica gel structure；It is then described soft
Part control system controls the Z axis motor rotation of the Z axis electric module 4 to drive Z sliding blocks and the bottom plate being fixed on the Z sliding blocks
Module 8 declines the height of a thickness (0.1 to 0.4mm), is transferred to the printing of N+1 Rotating fields, until the hollow silica gel cylinder is beaten
Print is completed, as shown in Figure 7；Because highly viscous silica gel stoste has natural support effect to the silica gel structure of solidification, so beating
Corresponding supporting construction need not be printed during print for hanging silica gel structure；Printed hollow silica gel cylinder is after solidifying
Silica gel model shell 26 and its silica gel stoste 25 of parcel constitute, printing complete after by the model of the silica gel product from printing
Directly taken out in groove 20, clear up using wiping or the mode such as vibrations or centrifugation or compressed gas blowing and be attached to the big of model surface
Part silicone gel stoste, the silica gel stoste of relief its surface residual trickle naturally, secondary solidification is carried out in a heated condition, is heated
Temperature be 80~200 DEG C, make silica gel model shell wrap up silica gel stoste 25 be fully cured and in silica gel model shell 26 melt for
One, as shown in figure 8, being finally completed the manufacture of the silica gel product.
Finally it should be noted that the foregoing is only the preferred embodiment of the present invention, this is not limited to
Invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it should be included in this hair
Within bright protection domain.
Claims (19)
1. a kind of silica gel stoste, comprising following component, is calculated in mass percent：
Basic glue, 2.4-59.9wt%,
Crosslinking agent, 23-69.2wt%,
Inserts, 10-30wt%,
The basic glue is to be at least 2 with hydroxy-end capped line style polysiloxane, or the basic glue for degree of functionality
Polysiloxanes containing vinyl ends or side base；The crosslinking agent is that having for acyloxy or hydrogen atom or hydroxyl is connected with silicon atom
Organic siloxane, or the oligosiloxane that the crosslinking agent is silicon-hydrogen bond containing；The inserts is reinforcing or weak reinforcing fill out
Fill agent.
2. silica gel stoste according to claim 1, it is characterised in that：Also include tackifier, the tackifier are that silane is even
Join agent.
3. silica gel stoste according to claim 1 or 2, it is characterised in that：Silica gel stoste viscosity under the conditions of 25 DEG C
Value scope is 3000-100000cps, and the silica gel hardness after solidification is 0-50A, and tensile strength is 1-5MPa, and elongation is 170-
1200%, tearing strength is 3-26kN/m.
4. a kind of silica gel 3D printer of the silica gel stoste any one of usage right requirement 1 to 3, it is characterised in that：Bag
Motion module, print module and software control system are included, the motion module includes frame (1), in the frame (1)
X-axis electric module (2), Y-axis electric module (3), the Z axis electric module (4) and installed in the Z axis set along coordinate system direction
Floor module (8) on electric module (4), the print module is including the pressure pot (5) being sequentially connected with, glue dispensing valve (6) and beats
Shower nozzle (7) is printed, the printing head (7) is fixed on the Y-axis electric module (3) by fixed plate (22), the bottom plate mould
Block (8) includes the printing supporting plate (19) being fixed on the Z axis electric module (4) and is fixed on the printing supporting plate (19)
Print cup (20), the print cup (20) is built with described silica gel stoste, and the silica gel stoste is fully wrapped around from the printing
The silica gel curing catalysts of shower nozzle (7) extrusion, the software control system is to the X-axis electric module (2), Y-axis electric module
(3), Z axis electric module (4), glue dispensing valve (6) carry out Control on Communication.
5. silica gel 3D printer according to claim 4, it is characterised in that：The floor module (8) also includes fluid infusion mould
Block (23), the fluid infusion module (23) includes pump with being connected flexible pipe, and the fluid infusion module (23) is by the connection flexible pipe with setting
The fluid infusion (24) put on the print cup (20) is connected, and the software control system is led to the fluid infusion module (23)
Letter control.
6. silica gel 3D printer according to claim 4, it is characterised in that：The X-axis electric module (2), the electronic mould of Y-axis
Block (3), Z axis electric module (4) are respectively included under X-axis motor (17), Y-axis motor, the driving of Z axis motor respectively along X-axis, Y
Axle, X sliding blocks (18), Y sliding blocks, the Z sliding blocks of Z-direction slip, the printing supporting plate (19) are fixed on the Z axis electric module
(4) on the Z sliding blocks, the printing head (7) is fixed on the Y-axis electric module (3) by the fixed plate (22)
On the Y sliding blocks.
7. the silica gel 3D printer according to any one of claim 4 to 6, it is characterised in that：The floor module (8) is also wrapped
The equally distributed heating galvanic couple (21) of inwall in the print cup (20) is included, the heating galvanic couple (21) is bonded by high temperature resistant
Agent is fixed on the inwall of the print cup (20).
8. silica gel 3D printer according to claim 7, it is characterised in that：It is described heating galvanic couple (21) preheating temperature be
50-120 DEG C, the silica gel curing catalysts are the organo-tin compound that Theil indices are 15-35wt% or platinum content is 0.1-
1wt% platinum compounds and its complex.
9. silica gel 3D printer according to claim 8, it is characterised in that：The pressure pot (5) by flexible pipe with it is described
The charging aperture (11) of glue dispensing valve (6) is connected, and the discharging opening (9) of the glue dispensing valve (6) passes through flexible pipe and the printing head (7) phase
Even, air inlet (12) the connection compressed air of the glue dispensing valve (6).
10. silica gel 3D printer according to claim 9, it is characterised in that：The software control system passes through the point
The communication interface (10) of glue valve (6) controls the air pressure of the air inlet (12) of the glue dispensing valve (6), and the software control system passes through
The control heating galvanic couple (21) carries out Control on Communication to the floor module (8).
11. silica gel 3D printer according to claim 10, it is characterised in that：The air inlet (12) of the glue dispensing valve (6)
Compressed gas air pressure be 0.6-1.5MPa.
12. silica gel 3D printer according to claim 7, it is characterised in that：The X-axis electric module (2) includes X-axis horse
Up to (17), contiguous block (16), shaft coupling (15), screw rod (14), optical axis slide bar (13) and X sliding blocks (18), the contiguous block (16)
It is fixed in the frame (1), the X-axis motor (17) is fixed on the contiguous block (16), and passes through the shaft coupling
Device (15) is connected with the screw rod (14), and the optical axis slide bar (13) is fixed on the contiguous block (16), the X sliding blocks
(18) moved in the X-axis direction by the motion thread on the screw rod (14) along the optical axis slide bar (13).
13. silica gel 3D printer according to claim 7, it is characterised in that：The internal diameter of the printing head (7) is 0.1-
2mm, extruded velocity is 0.001-1mL/s.
14. silica gel 3D printer according to claim 7, it is characterised in that：The printing head (7) is in the software control
System processed is 0.5- to the translational speed under the coordinated signals of the X-axis electric module (2) and the Y-axis electric module (3)
50mm/s。
15. a kind of Method of printing of the silica gel 3D printer of use silica gel stoste according to claim any one of 4-14,
Comprise the following steps：
If the silica gel product is divided into dried layer by A, software control system according to the model data information of silica gel product to be printed；
B, elder generation load onto the silica gel stoste in print cup (20), and the depth of the silica gel stoste is more than silica gel product to be printed
Highly；
C, when print n-th layer when, the software control system according to the model data information of silica gel product to be printed control Z axis electricity
It is high that the Z axis motor rotation of dynamic model block (4) drives Z sliding blocks and the floor module (8) being fixed on the Z sliding blocks to move to n-th layer
Below degree, the liquid level that printing head (7) is placed in the silica gel stoste, control glue dispensing valve (6) is at a particular pressure by silica gel solid
Change catalyst to extrude in the printing head (7) through the glue dispensing valve (6) from pressure pot (5), pass through the software control system
Ad-hoc location is moved to by printing head (7) to the coordinated signals of X-axis electric module (2) and Y-axis electric module (3), extrusion
Silica gel curing catalysts solidify rapidly after fully being reacted with the silica gel stoste in the print cup (20), the structure after solidification
It is molded naturally under the high viscosity support of the silica gel stoste, completes the printing of n-th layer silica gel structure；The then software control
System controls the Z axis motor rotation of the Z axis electric module (4) to drive Z sliding blocks and the floor module being fixed on the Z sliding blocks
(8) decline the height of a thickness, be transferred to the N+1 layers of printing that repeats the above steps until completing the silica gel product.
16. the Method of printing of silica gel 3D printer according to claim 15, it is characterised in that：In stepb, the silicon
Collagen solution also includes tackifier, and the tackifier are silane coupler；In step C, the floor module (8) is additionally included in institute
The equally distributed heating galvanic couple (21) of inwall of print cup (20) is stated, the heating galvanic couple (21) is fixed by high-temperature-resistant adhesive
Inwall in the print cup (20), is preheated, preheating temperature is by the heating galvanic couple (21) to the silica gel stoste
50-120 DEG C, the silica gel curing catalysts are Theil indices 15-35wt% organo-tin compounds or platinum content 0.1-1wt%
Platinum compounds and its complex, the specified pressure of the glue dispensing valve (6) is 0.6-1.5MPa, the printing head (7) it is interior
Footpath is 0.1-2mm, and extruded velocity is 0.001-1mL/s, and the printing head (7) is in the software control system to the X-axis
Translational speed under the coordinated signals of electric module (2) and the Y-axis electric module (3) is 0.5-50mm/s.
17. the Method of printing of silica gel 3D printer according to claim 15, it is characterised in that：In step C, described
The lower fluid infusion module of software control system control ensures that the silica gel stoste is persistently injected into the print cup, keeps the silica gel
The liquid level of stoste and the distance between printing head exit end face are constant.
18. a kind of Method of printing of the silica gel 3D printer of use silica gel stoste according to claim any one of 4-14,
Comprise the following steps：
A, using model treatment software silica gel model inwardly carried out along normal taking out shell processing, obtain hollow with certain wall thickness
Shell mechanism, hollow shell structure importing 3D printing Slice Software is handled, the hollow shell structure or entity is obtained
The 3D printer motion control file of model, is inputted in the silica gel 3D printer；
The silica gel stoste of certain depth is pre-charged with B, print cup, place is exhausted in the silica gel stoste to print cup and its inside
Manage, remove air entrapment, printing head starting point is set, printing head is inserted in silica gel stoste, adding in print cup is set
Electric thermo-couple temperature, silica gel stoste is preheated to set temperature；
C, when print n-th layer when, the software control system according to the model data information of silica gel product to be printed control Z axis electricity
The Z axis motor rotation of dynamic model block drives Z sliding blocks and the floor module being fixed on the Z sliding blocks to move to n-th layer height, will beat
Print shower nozzle is placed in below the liquid level of the silica gel stoste, and control glue dispensing valve is at a particular pressure by silica gel curing catalysts from pressure
Bucket is extruded through the glue dispensing valve in the printing head, by the software control system to X-axis electric module and the electronic mould of Y-axis
Printing head is moved to ad-hoc location by the coordinated signals of block, the silica gel curing catalysts of extrusion with it is described in the print cup
Silica gel stoste solidifies rapidly after fully reacting, and the structure after solidification is molded naturally under the high viscosity support of the silica gel stoste,
The printing of n-th layer silica gel structure is completed, fluid infusion module ensures that the silica gel stoste continues under software control system control
It is injected into print cup, keeps silica gel stoste liquid level and the distance between printing head exit end face constant；The subsequent software
Control system controls the Z axis motor rotation of the Z axis electric module to drive Z sliding blocks and the bottom plate mould being fixed on the Z sliding blocks
Block declines the height of a thickness, is transferred to the N+1 layers of printing that repeats the above steps until completing the silica gel product；
D, the hollow silica gel shell of printing shaping taken out from print cup, the silica gel stoste of processing enclosure surface residual, will be outer
Shell carries out secondary solidification under the high temperature conditions, and the silica gel stoste and shell solidification for making enclosure are integrated, so as to realize entity
The quick manufacture of silica gel product.
19. the Method of printing of silica gel 3D printer according to claim 18, it is characterised in that：In stepb, the silicon
Collagen solution also includes tackifier, and the tackifier are silane coupler；In step C, the floor module is additionally included in described
The equally distributed heating galvanic couple of inwall of print cup, the heating galvanic couple is fixed on the print cup by high-temperature-resistant adhesive
Inwall, is preheated, preheating temperature is 50~120 DEG C, described hollow mould by the heating galvanic couple to the silica gel stoste
The ratio of type volume and its physical model volume is 10%~50%, the silica gel curing catalysts are Theil indices for 15~
35wt% organo-tin compound or platinum content is 0.1~1wt% platinum compounds and its complex, the spy of the glue dispensing valve
Constant-pressure is 0.6~1.5MPa, and the internal diameter of the printing head is 0.1~2mm, and extruded velocity is 0.001~1mL/s, described
Shifting of the printing head under coordinated signals of the software control system to the X-axis electric module and the Y-axis electric module
Dynamic speed is 0.5~50mm/s, in step C, and the fluid infusion module ensures the silicon under software control system control
Collagen solution is persistently injected into the print cup, keep between the liquid level and printing head exit end face of the silica gel stoste away from
From for 0.2~10mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610820881.0A CN106433142A (en) | 2016-09-12 | 2016-09-12 | Silica gel 3D printer and printing method thereof |
| CN2016108208810 | 2016-09-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107298860A true CN107298860A (en) | 2017-10-27 |
| CN107298860B CN107298860B (en) | 2020-02-07 |
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| CN110238836A (en) * | 2019-06-21 | 2019-09-17 | 河海大学常州校区 | A kind of pneumatic software bending steering structure |
| CN110978500A (en) * | 2019-12-25 | 2020-04-10 | 深圳光韵达光电科技股份有限公司 | 3D printing method and device based on thermal initiator addition |
| CN112976572A (en) * | 2021-02-05 | 2021-06-18 | 华南理工大学 | Silica gel 3D printing device and method based on support bath |
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| CN110328852B (en) * | 2019-06-27 | 2021-11-12 | 陕西科技大学 | 3D printing equipment for continuous fiber reinforced silicone rubber and using method thereof |
| CN110978508A (en) * | 2019-11-01 | 2020-04-10 | 清华大学 | Silica gel 3D printing device and printing method thereof |
| CN112549533A (en) * | 2020-11-20 | 2021-03-26 | 芜湖英罗智能制造有限公司 | Formula 3D printer is extruded to material |
| WO2023123482A1 (en) | 2021-12-31 | 2023-07-06 | Elkem Silicones Shanghai Co., Ltd. | Two-part silicone composition for additive manufacturing |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106433142A (en) | 2017-02-22 |
| CN107298860B (en) | 2020-02-07 |
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