CN114103112A - Compound printing device based on electrohydrodynamic effect - Google Patents
Compound printing device based on electrohydrodynamic effect Download PDFInfo
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- CN114103112A CN114103112A CN202111297757.8A CN202111297757A CN114103112A CN 114103112 A CN114103112 A CN 114103112A CN 202111297757 A CN202111297757 A CN 202111297757A CN 114103112 A CN114103112 A CN 114103112A
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- 238000007639 printing Methods 0.000 title claims abstract description 87
- 230000000694 effects Effects 0.000 title claims abstract description 20
- 150000001875 compounds Chemical class 0.000 title abstract description 5
- 239000007921 spray Substances 0.000 claims abstract description 83
- 239000002131 composite material Substances 0.000 claims abstract description 54
- 238000001523 electrospinning Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims description 54
- 239000007788 liquid Substances 0.000 claims description 44
- 238000005507 spraying Methods 0.000 claims description 39
- 238000003860 storage Methods 0.000 claims description 37
- 239000000243 solution Substances 0.000 claims description 36
- 238000009987 spinning Methods 0.000 claims description 36
- 239000000758 substrate Substances 0.000 claims description 23
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 230000005684 electric field Effects 0.000 claims description 14
- 238000000889 atomisation Methods 0.000 claims description 9
- 238000007787 electrohydrodynamic spraying Methods 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 239000011156 metal matrix composite Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- 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
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/112—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
-
- 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
- B29C64/10—Processes of additive manufacturing
- B29C64/171—Processes of additive manufacturing specially adapted for manufacturing multiple 3D objects
- B29C64/182—Processes of additive manufacturing specially adapted for manufacturing multiple 3D objects in parallel batches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/209—Heads; Nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/227—Driving means
- B29C64/241—Driving means for rotary motion
-
- 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
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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)
- Electrostatic Spraying Apparatus (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention belongs to the technical field of advanced manufacturing, and relates to a composite printing device based on an electrohydrodynamic effect, which comprises an electrohydrodynamic module, a spray head switching module and a composite structure preparation module, wherein three processes of electrospray, electrospray printing and electrospinning can be obtained by switching different spray needles and adjusting process parameters, the three processes of electrospray, electrospray printing and electrospinning are switched on line, the electrospray layer, the electrospray printing layer and the electrospinning layer are combined, and composite manufacturing of various structures can be realized according to composite structure design. The compound printing device based on the electrohydrodynamic effect has the advantages of being low in cost, short in period and wide in applicability.
Description
Technical Field
The invention belongs to the technical field of advanced manufacturing, and relates to a composite printing device based on an electrohydrodynamic effect.
Background
The composite structure is formed by compounding multiple materials, and due to the composite effect of the multiple materials, the composite structure obtains the special performance which is not possessed by the original single material, the performance of the structure and a device is greatly improved, and the composite structures can be composed of films, fibers, particles and the like. However, at present, the resin-based composite structure is formed by injection molding, compression molding, pultrusion and other forming methods; the metal matrix composite structure is mostly formed by a solid phase forming method and a liquid phase forming method. The method for preparing the composite structure has the process limitations of long preparation period, low material utilization rate, high process cost and the like.
The printing technology developed in the year provides an effective means for manufacturing various micro-nano structures and devices. Based on the preparation technology of the electrohydrodynamic effect, the method drives the functional liquid spray needle port to generate fine jet flow by using external electric field force and fluid pressure, and the method for pulling out jet liquid drop jet flow or liquid drop on the spray needle meniscus by relying on the electrohydrodynamic effect has the advantages of high resolution, wide material adaptability, short production period and the like. In addition, three forms of electric atomization, electric spray printing and electric spinning can be obtained by changing physical property parameters (viscosity, conductivity, surface tension and the like) and printing process parameters (material and inner diameter size of a spray needle, external electric field intensity, printing height, electrode form and position) of the functional liquid, and the three forms are used for preparing structures with different shapes and sizes. However, most of the current preparation technologies based on the electrohydrodynamic effect are single-function, and three processes of electrospray, electrospray printing and electrospinning cannot be simultaneously obtained on one device, so that the application range of the preparation technologies based on the electrohydrodynamic effect is limited, and a composite structure is difficult to prepare.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the technology, and the invention provides a composite printing device based on the electrohydrodynamic effect, which adopts the technical scheme that:
a composite printing device based on an electrohydrodynamic effect is characterized by comprising an electrohydrodynamic module, a spray head switching module and a composite structure preparation module; the electrohydrodynamic module comprises an injection pump, a connecting port, a high-voltage power supply, a liquid storage bin clamp, a spray head electrode, an upper computer, a light source, a buffer tube clamp, a buffer tube and a connecting guide tube; the injection pump conveys the functional solution into the buffer tube through a connecting conduit; the buffer tube is fixed on the buffer tube clamp to play a role in stabilizing the flow; the liquid storage bin is fixed on the liquid storage bin clamp, and a connecting port is formed in the top end of the liquid storage bin; the solution in the buffer tube reaches the liquid storage bin through the connecting conduit and the connecting port; the spray head electrode is positioned on the liquid storage bin; the output end of the high-voltage power supply is communicated with the spray head electrode; the upper computer is used for controlling the printing device; the light source is positioned at one side of the liquid storage bin;
the spray head switching module comprises a conversion head bevel gear, a conversion head, an electric atomization spray head, an electric spray printing spray head, an electric spinning spray head, a motor bevel gear, a conversion motor clamp, a longitudinal support beam, a transverse bearing beam, a screw rod, a motor clamp and an alternating current servo motor; the conical tooth of the conversion head is positioned at the top end of the conversion head and drives the conversion head to rotate; an electric atomizing nozzle, an electric spraying printing nozzle and an electric spinning nozzle are fixed below the conversion head, and included angles among the nozzles are all 120 degrees; the alternating current servo motor is fixed on the motor clamp; the lead screw is connected with an alternating current servo motor; the transverse bearing beam is arranged on the track of the longitudinal supporting beam and is matched with the lead screw; the alternating current servo motor drives the screw rod to rotate and drives the transverse bearing beam to move; the switching motor clamp is positioned below the transverse bearing beam; the conversion motor is fixed on the conversion motor clamp; the motor bevel gear is arranged at one end of the conversion motor and is meshed with the conversion head bevel gear; the conversion motor drives the motor bevel gear and drives the conversion head bevel gear to rotate;
the composite structure preparation module comprises a moving base, a substrate clamp, a substrate, an electric atomization layer, an electric spraying printing layer and an electric spinning layer; a substrate clamp is fixed above the moving base; the substrate is fixed on the substrate clamp; the high-voltage power supply provides high voltage for the electric atomizing nozzle, the electric spraying printing nozzle and the electric spinning nozzle through the nozzle electrode, and a driving electric field is formed between the substrate and the electric atomizing nozzle or the electric spraying printing nozzle or the electric spinning nozzle; the functional solution in the electric atomizing nozzle is deposited on the substrate in a spraying mode under the action of a high-voltage electric field to form an electric atomizing layer; the functional solution in the electric spraying printing nozzle is deposited on the electric atomizing layer in a jet flow mode under the action of a high-voltage electric field to form an electric spraying printing layer, and the electric spraying printing layer and the electric atomizing layer are combined to form a composite structure; the functional solution in the electrospinning spray head is deposited on the electrospraying printing layer in a spinning mode under the action of a high-voltage electric field to form an electrospinning layer; the electrospraying layer, the electrospraying printing layer and the electrospinning layer are combined together to form a composite structure; the electrospraying layer, the electrospraying printing layer and the electrospinning layer are prepared in different orders, so that different composite structures can be prepared.
The printing device is adopted to perform composite printing based on the electrohydrodynamic effect, and is characterized by comprising the following steps:
first, transporting the solution
Conveying the functional solution into a liquid storage bin at a fixed flow rate through a connecting guide pipe by utilizing the pushing pressure of an injection pump, wherein the injection pump firstly conveys the functional solution into a buffer pipe through the connecting guide pipe, the buffer pipe plays roles of buffering and stabilizing the flow, and the functional solution in the buffer pipe reaches an electric atomizing nozzle, an electric spraying printing nozzle and an electric spinning nozzle at the fixed flow rate under the action of the continuous fluid pressure and the self gravity of the solution of the injection pump;
second, switching the spray head
According to the requirement of preparing the composite structure, an electric atomizing nozzle, an electric spraying printing nozzle and an electric spinning nozzle are switched on line; the conversion motor drives the motor bevel gear to rotate, the motor bevel gear is in meshing transmission with the conversion head bevel gear, the rotation of the conversion head bevel gear drives the switching among the electric atomizing spray head, the electric spraying printing spray head and the electric spinning spray head, the spray head switched to the working position is communicated with the upper liquid storage bin, and the solution in the liquid storage bin enters the switched spray head;
third, preparing the composite structure
After the spray heads are switched, the alternating current servo motor drives the screw rod to rotate, the transverse bearing beam is driven to move to adjust the vertical height of the spray heads, the high-voltage power supply adjusts the voltage output value, high voltage is applied to the spray heads through spray head electrodes, functional solution flowing into the spray heads through the buffer tubes and the liquid storage bins forms liquid drops or jet flow at the outlets of the spray heads under the multi-force composite action, the preparation sequence of the electric atomization layer, the electric spraying printing layer and the electric spinning layer is different according to different composite structures, and the electric atomization spray heads, the electric spraying printing spray heads and the electric spinning spray heads are switched smoothly and also different; after the spray heads are switched, the upper computer adjusts key technological parameters and controls the printing device, the electric atomization layer, the electric spraying printing layer and the electric spinning layer to be sequentially prepared according to different composite structures, and the composite structures are prepared by combining layer by layer.
The invention has the beneficial effects that: a composite printing device based on an electrohydrodynamic effect obtains three jet forms of electrospray, electrospray printing and electrospinning, realizes the on-line switching of the three processes of the electrospray, the electrospray printing and the electrospinning, combines an electrospray layer, an electrospray printing layer and an electrospinning layer, and can realize the composite manufacturing of various structures according to the design of a composite structure. The compound printing device based on the electrohydrodynamic effect has the advantages of being low in cost, short in period and wide in applicability.
Description of the drawings:
fig. 1 is a schematic diagram of a hybrid printing apparatus based on the electrohydrodynamic effect in an embodiment of the present invention.
FIG. 2 is a schematic diagram of a showerhead switch module according to an embodiment of the invention.
FIG. 3 is a schematic illustration of a composite structure fabrication process in an embodiment of the present invention.
In the figure: the device comprises an injection pump 1, a connection port 2, a high-voltage power supply 3, a liquid storage bin 4, a liquid storage bin fixture 5, a spray head electrode 6, a control computer 7, a light source 8, a conversion head bevel gear 9, a conversion head 10, a motion base 11, a substrate fixture 12, a substrate 13, an electric atomizing spray head 14, an electric spraying printing spray head 15, an electric spinning spray head 16, a motor bevel gear 17, a conversion motor 18, a conversion motor fixture 19, a longitudinal support beam 20, a transverse bearing beam 21, a lead screw 22, a motor fixture 23, an alternating current servo motor 24, a buffer tube fixture 25, a buffer tube 26, a connecting guide tube 27, an electric atomizing layer 28, an electric spraying printing layer 29 and an electric spinning layer 30.
Detailed Description
The following detailed description of the embodiments of the invention refers to the accompanying drawings. See fig. 1-3.
The embodiment discloses a composite printing device based on an electrohydrodynamic effect, which is characterized by comprising an electrohydrodynamic module, a spray head switching module and a composite structure preparation module; the electrohydrodynamic module comprises an injection pump 1, a connection port 2, a high-voltage power supply 3, a liquid storage bin 4, a liquid storage bin clamp 5, a spray head electrode 6, an upper computer 7, a light source 8, a buffer tube clamp 25, a buffer tube 26 and a connecting guide pipe 27; the syringe pump 1 delivers the functional solution into the buffer tube 26 through the connecting conduit 27; the buffer tube 26 is fixed on the buffer tube clamp 25 and plays a role in stabilizing the flow; the liquid storage bin 4 is fixed on the liquid storage bin clamp 5, and the top end of the liquid storage bin 4 is provided with a connecting port 2; the solution in the buffer tube 26 reaches the liquid storage bin 4 through the connecting conduit 27 and the connecting port 2; the spray head electrode 6 is positioned on the liquid storage bin 4; the output end of the high-voltage power supply 3 is communicated with the spray head electrode 6; the upper computer 7 is used for controlling the printing device; the light source 8 is positioned at one side of the liquid storage bin 4;
specifically, the nozzle switching module comprises a conversion head bevel gear 9, a conversion head 10, an electric atomizing nozzle 14, an electric spraying printing nozzle 15, an electric spinning nozzle 16, a motor bevel gear 17, a conversion motor 18, a conversion motor clamp 19, a longitudinal support beam 20, a transverse bearing beam 21, a lead screw 22, a motor clamp 23 and an alternating current servo motor 24; the conversion head bevel gear 9 is positioned at the top end of the conversion head 10 and drives the conversion head 10 to rotate; an electric atomizing nozzle 14, an electric spraying printing nozzle 15 and an electric spinning nozzle 16 are fixed below the conversion head 10, and included angles among the nozzles are all 120 degrees; the alternating current servo motor 24 is fixed on the motor clamp 23; the lead screw 22 is connected with an alternating current servo motor 24; the transverse bearing beam 21 is arranged on the track of the longitudinal supporting beam 20 and is matched with the lead screw 22; the alternating current servo motor 24 drives the lead screw 22 to rotate and drives the transverse bearing beam 21 to move; the switching motor clamp 19 is positioned below the transverse bearing beam 21; the conversion motor 18 is fixed on the conversion motor clamp 19; the motor bevel gear 17 is arranged at one end of the conversion motor 18 and is meshed with the conversion head bevel gear 9; the conversion motor 18 drives the motor bevel gear 17 and drives the conversion head bevel gear 9 to rotate;
specifically, the composite structure preparation module comprises a moving base 11, a substrate clamp 12, a substrate 13, an electrospray layer 28, an electrospray printing layer 29 and an electrospinning layer 30; a substrate clamp 12 is fixed above the moving base 11; the substrate 13 is fixed on the substrate clamp 12; the high-voltage power supply 3 provides high voltage for the electric atomizing nozzle 14, the electric spraying printing nozzle 15 and the electric spinning nozzle 16 through the nozzle electrode 6, and forms a driving electric field between the substrate 13 and the electric atomizing nozzle 14 or the electric spraying printing nozzle 15 or the electric spinning nozzle 16; the functional solution in the electric atomizing nozzle 14 is deposited on the substrate 13 in a form of spray under the action of a high-voltage electric field to form an electric atomizing layer 28; the functional solution in the electric spraying printing nozzle 15 is deposited on the electric atomizing layer 28 in a jet flow mode under the action of a high-voltage electric field to form an electric spraying printing layer 29, and is combined with the electric atomizing layer 28 to form a composite structure; the functional solution in the electrospinning spray head 16 is deposited on the electrospraying printing layer 29 in a spinning mode under the action of a high-voltage electric field to form an electrospinning layer 30; the electrospray layer 28, the electrospray printing layer 29 and the electrospinning layer 30 are combined together to form a composite structure; the electrospray layer 28, the electrospray printing layer 29 and the electrospinning layer 30 are prepared in different sequences, so that different composite structures can be prepared.
Adopt above-mentioned printing device to carry out compound printing based on electrohydrodynamic effect, its characterized in that, the step is as follows:
first, transporting the solution
Conveying PVP solution in a syringe with the range of 10-1000 mu L into a liquid storage bin 4 at the flow rate of 0.001 mu L/min-2 mu L/min through a connecting conduit 27 with the diameter of 30-500 mu m by utilizing the pushing pressure of an injection pump 1, wherein the injection pump 1 firstly conveys the functional solution into a buffer tube 26 with the capacity of 30-1000 mu L through the connecting conduit 27, the buffer tube 26 plays the roles of buffering and stabilizing the flow, and under the action of the continuous fluid pressure and the self gravity of the solution of the injection pump 1, the functional solution in the buffer tube 26 reaches the inside of an electric atomizing nozzle 14 with the inner diameter of 50-500 mu m, an electric jet printing nozzle 15 with the inner diameter of 10-100 mu m and an electric spinning nozzle 16 with the inner diameter of 30-200 mu m at a fixed flow rate;
second, switching the spray head
Determining different preparation process methods according to different layers and structural characteristics of the composite structure, and switching the electric atomizing nozzle 14, the electric spraying printing nozzle 15 and the electric spinning nozzle 16 on line; a conversion motor 18 with rated power of 5-100W drives a motor bevel gear 17 to rotate, the motor bevel gear 17 is in meshing transmission with a conversion head bevel gear 9, the rotation of the conversion head bevel gear 9 drives the switching among an electric atomizing spray head 14, an electric spraying printing spray head 15 and an electric spinning spray head 16, the spray head switched to a working position is communicated with a liquid storage bin 4 above, and the solution in the liquid storage bin 4 enters the switched spray head;
third, preparing the composite structure
After the spray heads are switched, the alternating current servo motor 24 drives the screw rod 22 to rotate, the transverse bearing beam 21 is driven to move to adjust the vertical height of the spray head, the high-voltage power supply 3 with the maximum range of 10000V adjusts the voltage output value, 1000-5000V high voltage is applied to the spray head through the spray head electrode 6, and PVP solution flowing into the spray head through the buffer tube 26 and the liquid storage bin 4 forms liquid drops or jet flow with the diameter of 40nm-200 mu m at the outlet of the spray head under the multi-force composite action, according to different composite structures, the preparation sequence of the electric atomizing layer 28, the electric spraying printing layer 29 and the electric spinning layer 30 is different, so that the electric atomizing spray head 14, the electric spraying printing spray head 15 and the electric spinning spray head 16 are switched smoothly and also different; after the nozzles are switched, the upper computer 7 adjusts key process parameters, controls the printing device, and sequentially prepares the electric atomization layer 28, the electric injection printing layer 29 and the electrospinning layer 30 according to different composite structures, and combines layer by layer to prepare the composite structure.
Claims (2)
1. A composite printing device based on an electrohydrodynamic effect is characterized by comprising an electrohydrodynamic module, a spray head switching module and a composite structure preparation module; the electrohydrodynamic module comprises an injection pump (1), a connecting port (2), a high-voltage power supply (3), a liquid storage bin (4), a liquid storage bin clamp (5), a spray head electrode (6), an upper computer (7), a light source (8), a buffer tube clamp (25), a buffer tube (26) and a connecting guide tube (27); the injection pump (1) delivers the functional solution to the buffer tube (26) through the connecting conduit (27); the buffer tube (26) is fixed on the buffer tube clamp (25) to play a role in stabilizing the flow; the liquid storage bin (4) is fixed on the liquid storage bin clamp (5), and the top end of the liquid storage bin (4) is provided with a connecting port (2); the solution in the buffer tube (26) reaches the liquid storage bin (4) through the connecting conduit (27) and the connecting port (2); the spray head electrode (6) is positioned on the liquid storage bin (4); the output end of the high-voltage power supply (3) is communicated with the spray head electrode (6); the upper computer (7) is used for controlling the printing device; the light source (8) is positioned at one side of the liquid storage bin (4);
the spray head switching module comprises a conversion head bevel gear (9), a conversion head (10), an electric atomizing spray head (14), an electric spraying printing spray head (15), an electric spinning spray head (16), a motor bevel gear (17), a conversion motor (18), a conversion motor clamp (19), a longitudinal support beam (20), a transverse bearing beam (21), a screw rod (22), a motor clamp (23) and an alternating current servo motor (24); the conversion head bevel gear (9) is positioned at the top end of the conversion head (10) and drives the conversion head (10) to rotate; an electric atomizing nozzle (14), an electric spraying printing nozzle (15) and an electric spinning nozzle (16) are fixed below the conversion head (10), and included angles among the nozzles are 120 degrees; the alternating current servo motor (24) is fixed on the motor clamp (23); the lead screw (22) is connected with an alternating current servo motor (24); the transverse bearing beam (21) is arranged on the track of the longitudinal supporting beam (20) and is matched with the lead screw (22); the alternating current servo motor (24) drives the lead screw (22) to rotate and drives the transverse bearing beam (21) to move; the switching motor clamp (19) is positioned below the transverse bearing beam (21); the conversion motor (18) is fixed on the conversion motor clamp (19); the motor bevel gear (17) is arranged at one end of the conversion motor (18) and is meshed with the conversion head bevel gear (9); the conversion motor (18) drives the motor bevel gear (17) and drives the conversion head bevel gear (9) to rotate;
the composite structure preparation module comprises a moving base (11), a substrate clamp (12), a substrate (13), an electrospray layer (28), an electrospray printing layer (29) and an electrospinning layer (30); a substrate clamp (12) is fixed above the moving base (11); the substrate (13) is fixed on the substrate clamp (12); the high-voltage power supply (3) provides high voltage for the electric atomizing nozzle (14), the electric spraying printing nozzle (15) and the electric spinning nozzle (16) through the nozzle electrode (6), and forms a driving electric field between the substrate (13) and the electric atomizing nozzle (14) or the electric spraying printing nozzle (15) or the electric spinning nozzle (16); the functional solution in the electric atomizing nozzle (14) is deposited on the substrate (13) in a spraying mode under the action of a high-voltage electric field to form an electric atomizing layer (28); the functional solution in the electric spraying printing nozzle (15) is deposited on the electric atomizing layer (28) in a jet flow mode under the action of a high-voltage electric field to form an electric spraying printing layer (29), and the electric spraying printing layer and the electric atomizing layer (28) are combined to form a composite structure; the functional solution in the electrospinning spray head (16) is deposited on the electrospraying printing layer (29) in a spinning mode under the action of a high-voltage electric field to form an electrospinning layer (30); the electrospray layer (28), the electrospray printing layer (29) and the electrospinning layer (30) are combined together to form a composite structure; the electro-atomization layer (28), the electro-spray printing layer (29) and the electro-spinning layer (30) are prepared in different sequences, and different composite structures can be prepared.
2. Composite printing based on the electrohydrodynamic effect with a printing device according to claim 1, characterized by the following steps:
first, transporting the solution
Conveying the functional solution into the liquid storage bin (4) at a fixed flow rate through the connecting conduit (27) by utilizing the pushing pressure of the injection pump (1), wherein the injection pump (1) firstly conveys the functional solution into the buffer tube (26) through the connecting conduit (27), the buffer tube (26) plays a role of buffering and stabilizing the flow, and the functional solution in the buffer tube (26) reaches the inside of the electric atomizing nozzle (14), the electric spraying printing nozzle (15) and the electric spinning nozzle (16) at the fixed flow rate under the action of the continuous fluid pressure and the solution self gravity of the injection pump (1);
second, switching the spray head
According to the requirement of composite structure preparation, an electric atomizing nozzle (14), an electric spraying printing nozzle (15) and an electric spinning nozzle (16) are switched on line; the conversion motor (18) drives the motor bevel gear (17) to rotate, the motor bevel gear (17) is in meshing transmission with the conversion head bevel gear (9), the rotation of the conversion head bevel gear (9) drives the switching among the electric atomizing spray head (14), the electric spraying printing spray head (15) and the electric spinning spray head (16), the spray head switched to the working position is communicated with the liquid storage bin (4) above, and the solution in the liquid storage bin (4) enters the switched spray head;
third, preparing the composite structure
After the spray heads are switched, the alternating current servo motor (24) drives the lead screw (22) to rotate, the transverse bearing beam (21) is driven to move to adjust the vertical height of the spray heads, the high-voltage power supply (3) adjusts the voltage output value, high voltage is applied to the spray heads through the spray head electrodes (6), and functional solution flowing into the spray heads through the buffer tubes (26) and the liquid storage bins (4) forms liquid drops or jet flow at the outlets of the spray heads under the multi-force composite action, according to different composite structures, the preparation sequences of the electric atomizing layer (28), the electric spraying printing layer (29) and the electric spinning layer (30) are different, so that the electric atomizing spray heads (14), the electric spraying printing spray heads (15) and the electric spinning spray heads (16) are switched smoothly and also different; after the spray heads are switched, the upper computer (7) adjusts key process parameters, controls the printing device, and sequentially prepares the electric atomization layer (28), the electric injection printing layer (29) and the electric spinning layer (30) according to different composite structures, and combines layer by layer to prepare the composite structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111297757.8A CN114103112A (en) | 2021-10-28 | 2021-10-28 | Compound printing device based on electrohydrodynamic effect |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111297757.8A CN114103112A (en) | 2021-10-28 | 2021-10-28 | Compound printing device based on electrohydrodynamic effect |
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| Publication Number | Publication Date |
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| CN114103112A true CN114103112A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111297757.8A Pending CN114103112A (en) | 2021-10-28 | 2021-10-28 | Compound printing device based on electrohydrodynamic effect |
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Citations (4)
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| CN204526175U (en) * | 2015-03-09 | 2015-08-05 | 广东工业大学 | A kind of multiinjector 3D printer head |
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2021
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| CN105522803A (en) * | 2014-09-29 | 2016-04-27 | 苏州工业园区新国大研究院 | Method for preparing functional gradient coating through 3D printing based on electrostatic spinning and spraying |
| CN204526175U (en) * | 2015-03-09 | 2015-08-05 | 广东工业大学 | A kind of multiinjector 3D printer head |
| CN107199693A (en) * | 2017-04-18 | 2017-09-26 | 华中科技大学 | A kind of integrated jet printing appts for being used to increase and decrease material manufacture |
| CN113547739A (en) * | 2021-06-08 | 2021-10-26 | 青岛理工大学 | 3D printer for preparing multi-material micro-nano composite film and working method thereof |
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