CN103932369A - Controllable jetting type food 3D (Three-Dimensional) printing equipment and method - Google Patents

Controllable jetting type food 3D (Three-Dimensional) printing equipment and method Download PDF

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Publication number
CN103932369A
CN103932369A CN201410140733.5A CN201410140733A CN103932369A CN 103932369 A CN103932369 A CN 103932369A CN 201410140733 A CN201410140733 A CN 201410140733A CN 103932369 A CN103932369 A CN 103932369A
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China
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axis
nozzle
printing
food
supporting frame
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CN103932369B (en
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魏正英
杜军
付丽倩
卢秉恒
魏培
赵光喜
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SHAANXI QINTUDI AGRICULTURAL TECHNOLOGY Co Ltd
Xian Jiaotong University
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SHAANXI QINTUDI AGRICULTURAL TECHNOLOGY Co Ltd
Xian Jiaotong University
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Abstract

The invention discloses controllable jetting type food 3D (Three-Dimensional) printing equipment and method. The controllable jetting type food 3D printing equipment comprises a space three-dimensional locating device and a discharging device with rotatable nozzles, wherein the space three-dimensional locating device comprises sliding blocks which can freely move in an XY plane and a substrate which can move up and down along a Z direction, a nozzle fixing device is installed on a sliding block by virtue of a rotatable disc, the rotatable disc is provided with the five cylindrical nozzles, the nozzles correspond to different feeding cylinders, and flat mouth nozzles which are slantingly installed is also equipped and can be used for replacing the cylindrical nozzles. The controllable jetting type food 3D printing equipment and method are suitable for 3D printing of arbitrary flowing paste liquid food, can have the arbitrary functions of 2D drawing, 3D stereo-lithography and the like and have the advantages of high efficiency, wide application range, high precision and the like.

Description

A kind of controlled jetting type food 3D printing device and method
Technical field
The invention belongs to food processing technology field, relate to a kind of food-processing method and equipment, particularly a kind of controlled jetting type food 3D printing device and method.
Background technology
The academic name of " 3D printing " is called rapid shaping technique, also referred to as increasing material manufacturing technology, that a kind of traditional lathe, fixture and cutter of not needing just can produce arbitrary shape, according to the three-dimensional modeling data of object, by former with material layer by layer cumulative mode make the technology of mock-up.It is more and more extensive that 3D prints the article that can make, from machine components to food, then arrives human organ etc.Along with scientific technological advance and social progress, people are more and more higher to the requirement of food.Consumer not only requires food hygiene, more and more payes attention to especially the aesthetic appearance of food.Existing printing technique has considerable restraint and restriction on printing food material, and this Method of printing and equipment are applicable to the various food that can be made into pulp-like, thereby has greatly expanded the range of application of 3D printing food.
Summary of the invention
The object of the present invention is to provide a kind of controlled jetting type food 3D printing device and method, the method is simple in structure, easy to operate, highly effective, can print slurries paste like food.
To achieve these goals, the technical solution adopted in the present invention is:
A kind of controlled jetting type food 3D printing device, comprise supporting frame, 3 D locating device is installed on supporting frame, and in 3 D locating device, X-axis positioner and Y-axis positioner are arranged on the top of supporting frame, and Z axis positioner is arranged on the side of supporting frame; On X-axis positioner, be provided with can rotate for spraying the drawing mechanism of slurries paste like food, drawing mechanism is positioned at the center at supporting frame top; On Z axis positioner, be provided with for accepting the substrate of slurries paste like food, substrate is arranged on supporting frame inside, and is positioned at the below of drawing mechanism, and can under the control of Z axis positioner, along Z-direction, move; On drawing mechanism, be connected with the control loop of controlling slurries paste like food spray volume and spouting velocity by controller; Some nozzles are installed on drawing mechanism, and the compressed air inlet of nozzle and material inlet are connected with control loop and corresponding material feed drum respectively.
Described X-axis positioner comprises the X-axis turn-screw being positioned in X-direction and is sleeved on the nozzle slide block on X-axis turn-screw; On two relative supports of supporting frame top Y direction, be separately installed with Y-axis slide block, in one of them Y-axis slide block, X-axis stepper motor is installed, the output shaft of X-axis stepper motor is fixedly connected with X-axis turn-screw one end, and the other end of X-axis turn-screw is arranged on another Y-axis slide block.
Described Y-axis positioner comprises the Y-axis leading screw being sleeved on Y-axis slide block; On a support of supporting frame top X-direction, motor cabinet is installed, Double shaft-extension stepper motor is installed on motor cabinet, on the output shaft at Double shaft-extension stepper motor two ends, be all fixedly connected with power transmission shaft, two power transmission shafts are all connected with two Y-axis leading screws at supporting frame top respectively by bevel gear; Two Y-axis leading screws are set in two Y-axis slide blocks.
Described Z axis positioner comprises Z axis leading screw, and substrate is sleeved on Z axis leading screw; The top of Z axis leading screw is arranged on the bottom of motor cabinet, and bottom is fixedly connected with the output shaft of Z axis stepper motor, and Z axis stepper motor is arranged on a support of supporting frame bottom X-direction.
Described drawing mechanism also comprises the disk and provide the air compressor of power for nozzle of being rotatably connected that is arranged on nozzle slider bottom; The air intake of some nozzles is all connected with air compressor; Some nozzles are arranged on and are rotatably connected on disk, the spout of nozzle-the be positioned at top of substrate.
The spout of described nozzle-cross section and horizontal direction be obliquely installed.
The periphery of described supporting frame is also provided with the casing for the protection of supporting frame internal structure, and casing is made by glass material; Substrate is made by plating complexing gold copper-base alloy; Be rotatably connected on disk and be installed with five nozzles.
Between each described nozzle and air compressor, all by control loop, be connected, wherein each group control loop comprises main air pipeline and secondary compressed air line, the input of main air pipeline and secondary compressed air line is all connected with the air compressor as compressed air source, and output is all connected with nozzle.
The outlet of described air compressor is connected with tap valve, on the pipeline between air compressor and tap valve, is also connected with pressure gauge, and the entrance of nozzle is connected with triple valve; Main air pipeline comprise successively connect for control the pressure regulation proportioning valve of inlet amount and the first magnetic valve-, secondary compressed air line comprise connect successively the second magnetic valve-, Air-regulating valves and branch pipe; Pressure regulation proportioning valve and the second magnetic valve-entrance are connected respectively on two entrances of tap valve, the first magnetic valve-be connected respectively on two entrances of triple valve with the outlet of branch pipe; Wherein, the control signal output of controller respectively with pressure regulation proportioning valve, the first magnetic valve-, the second magnetic valve-and the control signal input of triple valve be connected.
A 3D Method of printing for controlled jetting type food, comprises the following steps:
1) select corresponding food, be processed into concentration suitable can flowable slurry aqueous, be placed in respectively corresponding material feed drum;
2) with alcohol, base-plate cleaning is clean;
3) adjust the distance of nozzle and substrate, make the liquid stream focus of reference nozzle in substrate surface;
4), according to the component of every layer of food, the scope of corresponding nozzle movement velocity and air compressing acc power is set;
5) open air compressor, adjust air pressure to guarantee feeding flow field;
6) successively start pressure regulation proportioning valve and the magnetic valve of respective nozzle, nozzle carries out scanning and printing according to the track of procedure stipulation;
7) printed after one deck, the distance of substrate decline a layer thickness is carried out the printing of lower one deck, and in forming process, keep the quantitative value summation of powder feeding cylinder constant, to guarantee the forming thickness uniformity of every layer, finally realize controlled jetting type food 3D printing shaping.
Compared with prior art, the present invention has following beneficial effect:
The present invention is arranged on 3 D locating device on supporting frame by appropriate design, drawing mechanism is arranged on X-axis positioner, the cooperation of the positioner by three directions, thus can realize drawing mechanism in the actions such as arbitrary line motion, circular motion and three-dimensional space curve motion in space; Drawing mechanism is by controller and control loop simultaneously, control spouting velocity and the spray volume of material, in conjunction with the printing of lining by line scan of the good track of procedure stipulation, realize functions such as drawing X-Y scheme and 3 D stereo moulding, there is the advantages such as high, the easy and simple to handle and high precision of efficiency.
Further, the present invention prints the food of the different viscosityes of variety classes for convenience, has designed the nozzle arrangements of applicable printing high viscosity liquid, by the orifice design of nozzle, is skewed, is conducive to increase the paste like food of ejection and the degree of adhesion of lower floor's matrix.The design of this incline structure not only can improve slurry is combined rate with substrate, and outlet-inclined impeller vane Cross section Design can also reduce contact-making surface and the surface tension of spout and slurry, thereby has effectively avoided printing the wire drawing phenomenon while stopping.
Further, the two-dimensional working platform interior locating device of X of the present invention and Y is comprised of X-axis turn-screw, nozzle slide block, X-axis stepper motor, X-axis turn-screw is connected on Y-axis leading screw by Y-axis slide block, and Y-direction drives two Y-axis lead screw transmission by Double shaft-extension stepper motor.This structure not only can realize the planar motion of arbitrfary point of slide block, and can improve the accuracy of its motion.
Further, the present invention is by pressure regulation proportional valve control food charging aperture flow, in real time fine adjustment inlet amount.
Further, the setting of drawing mechanism of the present invention is according to the designing requirement of printing objects gradient, to calculate the component proportion of diverse location, and using calculated value as food 3D printer powder feeder the numerical control variate-value of different powder buckets, in forming process, pass through controller, give variate-value of pressure regulation proportioning valve, pressure regulation proportioning valve is controlled powder sending quantity according to specified value, realizes the accurate control that distributes different food liquid flows according to diverse location and shape.
Further, the present invention is provided with for the protection of the internal structure of installing and makes it the more attractive in appearance casing of being made by glass material in supporting frame periphery.
Further, the secondary compressed air line of the present invention adopts branch pipe, and branch pipe is connected with atmosphere, thereby make the pressure in branch pipe be negative pressure, piston type spout is by the promotion of air pressure and the accurate control of timing controller in addition, food liquid is extruded from syringe needle, and negative pressure produces resorption to food liquid simultaneously, makes spout not have residual phenomenon.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention;
Fig. 2 is the work loop schematic diagram of single-nozzle of the present invention;
Fig. 3 is the distributed architecture schematic diagram of nozzle of the present invention;
Fig. 4 is the structural representation of spout of the present invention.
Wherein: 1 is supporting frame; 2 is Y-axis leading screw; 3 is Y-axis slide block; 4 is X-axis stepper motor; 5 is X-axis turn-screw; 6 is Double shaft-extension stepper motor; 7 is power transmission shaft; 8 is bevel gear; 9 is nozzle slide block; 10 is the disk that is rotatably connected; 11 is nozzle; 11-1 is spout; 12 is substrate; 13 is Z axis leading screw; 14 is air compressor; 15 is tap valve; 16 is pressure regulation proportioning valve; 17-1 is the first magnetic valve; 17-2 is the second magnetic valve; 18 is triple valve; 19 is branch pipe; 20 is Air-regulating valves; 21 is controller; 22 pressure gauges.
The specific embodiment
Below in conjunction with accompanying drawing and example, the present invention is described in further detail.
Referring to Fig. 1 to Fig. 4, a kind of controlled jetting type food 3D printing device of the present invention, comprises supporting frame 1, and the periphery of supporting frame 1 is also provided with the casing for the protection of supporting frame 1 internal structure, and casing is made by glass material; On supporting frame 1,3 D locating device is installed, in 3 D locating device, X-axis positioner and Y-axis positioner are arranged on the top of supporting frame, and Z axis positioner is arranged on the side of supporting frame; On X-axis positioner, be provided with can rotate for spraying the drawing mechanism of slurries paste like food, drawing mechanism is positioned at the center at supporting frame top; On Z axis positioner, be provided with for accepting the substrate 12 of slurries paste like food, substrate 12 is made by plating complexing gold copper-base alloy; Substrate 12 is arranged on supporting frame 1 inside, and is positioned at the below of drawing mechanism, and can under the control of Z axis positioner, along Z-direction, move; On drawing mechanism, be connected with the control loop of controlling slurries paste like food spray volume and spouting velocity by controller 21; Some nozzles 11 are installed on drawing mechanism, and the compressed air inlet of nozzle 11 and material inlet are connected with control loop and corresponding material feed drum respectively.
X-axis positioner comprises the X-axis turn-screw 5 being positioned in X-direction and is sleeved on the nozzle slide block 9 on X-axis turn-screw 5; On two relative supports of supporting frame 1 top Y direction, be separately installed with Y-axis slide block 3, in one of them Y-axis slide block 3, X-axis stepper motor 4 is installed, the output shaft of X-axis stepper motor 4 is fixedly connected with X-axis turn-screw 5 one end, and the other end of X-axis turn-screw 5 is arranged on another Y-axis slide block 3.
Y-axis positioner comprises the Y-axis leading screw 2 being sleeved on Y-axis slide block 3; On a support of supporting frame 1 top X-direction, motor cabinet is installed, Double shaft-extension stepper motor 6 is installed on motor cabinet, on the output shaft at Double shaft-extension stepper motor 6 two ends, being all fixedly connected with 7, two power transmission shafts 7 of power transmission shaft is all connected with two Y-axis leading screws 2 at supporting frame 1 top respectively by bevel gear 8; Two Y-axis leading screws 2 are set in two Y-axis slide blocks 3.
Z axis positioner comprises Z axis leading screw 13, and substrate 12 is sleeved on Z axis leading screw 13; The top of Z axis leading screw 13 is arranged on the bottom of motor cabinet, and bottom is fixedly connected with the output shaft of Z axis stepper motor, and Z axis stepper motor is arranged on a support of supporting frame 1 bottom X-direction.
Drawing mechanism also comprises the disk 10 and provide the air compressor 14 of power for nozzle 11 of being rotatably connected that is arranged on nozzle slide block 9 bottoms; Be rotatably connected on disk 10 and be installed with five nozzles 11, and arrange one with reference to nozzle.Each nozzle 11 air intake is all connected with air compressor 14; The spout 11-1 of nozzle 11 is positioned at the top of substrate 12.Cross section and the horizontal direction of the spout 11-1 of nozzle 11 are obliquely installed.
As shown in Figure 2, between each nozzle 11 and air compressor 14, all by control loop, be connected, wherein each group control loop comprises main air pipeline and secondary compressed air line, the input of main air pipeline and secondary compressed air line is all connected with the air compressor 14 as compressed air source, and output is all connected with nozzle 11.The outlet of air compressor 14 is connected with tap valve 15, on the pipeline between air compressor 14 and tap valve 15, is also connected with pressure gauge 22, and the entrance of nozzle 11 is connected with triple valve 18; Main air pipeline comprise successively connect for controlling pressure regulation proportioning valve 16 and the first magnetic valve 17-1 of inlet amount, secondary compressed air line comprises and connects successively the second magnetic valve 17-2, Air-regulating valves 20 and branch pipe 19; Pressure regulation proportioning valve 16 and the second magnetic valve 17-2 entrance are connected respectively on two entrances of tap valve 15, and the outlet of the first magnetic valve 17-1 and branch pipe 19 is connected respectively on two entrances of triple valve 18; Wherein, the control signal output of controller 21 is connected with the control signal input of pressure regulation proportioning valve 16, the first magnetic valve 17-1, the second magnetic valve 17-2 and triple valve 18 respectively.
The invention also discloses a kind of controlled jetting type food 3D Method of printing, comprise the following steps:
1) select corresponding food, be processed into can flowable slurry aqueously, be placed in respectively corresponding material feed drum;
2) with alcohol, base-plate cleaning is clean;
3) adjust the distance of nozzle and substrate, make the liquid stream focus of reference nozzle in substrate surface;
4), according to the component of every layer of food, the scope of corresponding nozzle movement velocity and air compressing acc power is set;
5) open air compressor, adjust air pressure to guarantee feeding flow field;
6) successively start pressure regulation proportioning valve and the magnetic valve of respective nozzle, nozzle carries out scanning and printing according to the track of procedure stipulation;
7) printed after one deck, the distance of substrate decline a layer thickness is carried out the printing of lower one deck, and in forming process, keep the quantitative value summation of powder feeding cylinder constant, to guarantee the forming thickness uniformity of every layer, finally realize controlled jetting type food 3D printing shaping.
Principle of the present invention:
The food 3D printing device of the controlled spray of the present invention, comprises the drawing mechanism of space three-dimensional positioner and rotatable nozzle.The nozzle slide block 9 that wherein, can move freely in X, Y plane, Y-axis slide block 3 and the substrate 12 that can move up and down in Z direction have formed the 3 D locating device of this equipment.Nozzle 11 is arranged on nozzle slide block 9 by the disk 10 that is rotatably connected; As shown in Figure 3, five nozzles are installed on the disk 10 that is rotatably connected, the corresponding different material feed drums of each nozzle.The power of drawing mechanism is provided by air compressor 14.
Shown in Fig. 4, print for convenience the food of the different viscosityes of variety classes, also designed the nozzle arrangements of applicable printing high viscosity liquid, orifice design is skewed be conducive to the increase paste like food of ejection and the degree of adhesion of lower floor's matrix.Spout cross section is inclined design, and the design of this project organization not only can improve slurry is combined rate with substrate, and outlet-inclined impeller vane Cross section Design can also reduce contact-making surface and the surface tension of spout and slurry, thus the wire drawing phenomenon while effectively having avoided printing termination.Food charging aperture flow is controlled by pressure regulation proportioning valve 16, in real time fine adjustment inlet amount.Spout can make food and matrix realize the rate of cohering more greatly.And the charging aperture of nozzle and outlet are designed with the device of capable of regulating flow quantity size.Each nozzle has the supporting a series of interchangeable nozzle that varies in size, and for the food slurries of printing the variable concentrations of different-grain diameter, can replace nozzle to reach best effects.
Wherein the setting of drawing mechanism is according to the designing requirement of printing objects gradient, to calculate the component proportion of diverse location, and using calculated value as food 3D printer powder feeder the numerical control variate-value of different powder buckets, in forming process, by controller 21, give 16 1 variate-values of pressure regulation proportioning valve, pressure regulation proportioning valve 16 is controlled powder sending quantity according to specified value, realizes the accurate control that distributes different food liquid flows according to diverse location and shape.The summation of each powder barrelage control variate-value is constant, so that the print thickness of every layer is consistent, finally realizes the food of the food 3D printing shaping of laser.
In addition, two-dimensional working platform interior locating device is comprised of X-axis turn-screw 5, nozzle slide block 9, X-axis stepper motor 4, and X-axis turn-screw 5 is connected on Y-axis leading screw 2 by Y-axis slide block 3, and Y-direction drives two Y-axis leading screw 2 transmissions by Double shaft-extension stepper motor 6.This method for arranging not only can be realized the planar motion of arbitrfary point of slide block, and can improve the accuracy of its motion.
Nozzle 11 is connected by the disk 10 that is rotatably connected with nozzle slide block 9, fixedly mounts five nozzles on the disk 10 that is rotatably connected, and each nozzle connects respectively different material feed drums.Each nozzle is controlled by a cover system separately, mainly comprises compressed air source, main air pipeline, secondary compressed air line, nozzle.In main air pipeline, be provided with successively pressure regulation proportioning valve 16, pressure gauge 22, the first magnetic valve 17-1 and triple valve 18, and its one end is connected with compressed air source, the other end is connected with flexible pipe.In the secondary compressed air line being connected with compressed air source, be provided with successively the second magnetic valve 17-2, Air-regulating valves 20 and branch pipe 19, branch pipe 19 is communicated with atmosphere, thereby makes the pressure in branch pipe 19 be negative pressure.Piston type spout, by the promotion of air pressure and the accurate control of timing controller, extrudes food liquid from syringe needle in addition, and negative pressure produces resorption to food liquid simultaneously, makes spout not have residual phenomenon.
As shown in Figure 1, this printing equipment nozzle can be realized the arbitrary motion in plane on a two-dimensional working platform, and substrate can move up and down.Between nozzle and slide block, by a rotatable disk, be connected, fixedly mounted five nozzles on disk, each nozzle connects different material feed drums.If take nozzle as printing reference position, by disk clockwise or rotate counterclockwise 72 °, 144 ° and can realize and switch the foodstuffs of printing other nozzles.If make time pressure formula nozzle, when nozzle is not worked, pressure regulation proportioning valve and magnetic valve are closed condition.When nozzle is started working, pressure regulation proportioning valve is opened, and air pressure is by pressure regulation ratio pressure regulating valve separately, the flow spraying with Control Nozzle, meanwhile, its corresponding magnetic valve is opened, nozzle under pressure, starts to spray food, prints work.When printing stops, the closed electromagnetic valve being connected with air pressure is opened the magnetic valve that is connected with vacuum simultaneously, and nozzle is produced to vacuum resorption, with instantaneous interruption nozzle ejection food, and does not produce liquid slip-stream and wire drawing phenomenon.Before starting to print, according to the designing requirement of printing objects, analyze in advance the component proportion of diverse location, calculate the corresponding force value of powder sending quantity as the different powder cylinders of food 3D printer powder feeder, realize the precise control of flew of printout diverse location.The summation of each powder cylinder numerical control variate-value is constant, so that the print thickness of every layer is consistent, finally realizes food 3D printing shaping.Concrete steps are as follows:
A, select corresponding food, be processed into concentration suitable can flowable slurry aqueous, be placed in respectively corresponding material feed drum.
B, in order to guarantee forming effect and hygienic requirements, substrate adopts laser absorption rate better and the plating complexing gold copper-base alloy of safety and sanitation, before printing, with alcohol, cleans up.
The distance of C, adjustment nozzle and substrate, makes the liquid stream focus of reference nozzle 11-1 in substrate surface.
D, according to every layer of food component difference, the scope of nozzle movement velocity, air compressing acc power is set.
E, open air compressor, adjust air pressure, guarantee feeding flow field.
F, priority start pressure regulation proportioning valve and the magnetic valve of respective nozzle, and nozzle carries out scanning and printing according to the track of procedure stipulation.
G, printed after one deck, the distance of workbench decline a layer thickness is carried out the printing of lower one deck, and in forming process, keeps the quantitative value summation of powder feeding cylinder constant, to guarantee the forming thickness uniformity of every layer.
Above content is only explanation technological thought of the present invention; can not limit protection scope of the present invention with this; every technological thought proposing according to the present invention, any change of doing on technical scheme basis, within all falling into the protection domain of the claims in the present invention book.

Claims (10)

1. a controlled jetting type food 3D printing device, it is characterized in that: comprise supporting frame (1), supporting frame is provided with 3 D locating device on (1), in 3 D locating device, X-axis positioner and Y-axis positioner are arranged on the top of supporting frame, and Z axis positioner is arranged on the side of supporting frame; On X-axis positioner, be provided with can rotate for spraying the drawing mechanism of slurries paste like food, drawing mechanism is positioned at the center at supporting frame top; Substrate (12) for accepting slurries paste like food is installed on Z axis positioner, and substrate (12) is arranged on supporting frame (1) inside, and is positioned at the below of drawing mechanism, and can under the control of Z axis positioner, along Z-direction, move; On drawing mechanism, be connected with the control loop of controlling slurries paste like food spray volume and spouting velocity by controller (21); Some nozzles (11) are installed on drawing mechanism, and the compressed air inlet of nozzle (11) and material inlet are connected with control loop and corresponding material feed drum respectively.
2. controlled jetting type food 3D printing device according to claim 1, is characterized in that: described X-axis positioner comprises the X-axis turn-screw (5) being positioned in X-direction and is sleeved on the nozzle slide block (9) on X-axis turn-screw (5); On two relative supports of supporting frame (1) top Y direction, be separately installed with Y-axis slide block (3), in one of them Y-axis slide block (3), X-axis stepper motor (4) is installed, the output shaft of X-axis stepper motor (4) is fixedly connected with X-axis turn-screw (5) one end, and the other end of X-axis turn-screw (5) is arranged on another Y-axis slide block (3).
3. controlled jetting type food 3D printing device according to claim 2, is characterized in that: described Y-axis positioner comprises the Y-axis leading screw (2) being sleeved on Y-axis slide block (3); On a support of supporting frame (1) top X-direction, motor cabinet is installed, Double shaft-extension stepper motor (6) is installed on motor cabinet, on the output shaft at Double shaft-extension stepper motor (6) two ends, be all fixedly connected with power transmission shaft (7), two power transmission shafts (7) are all connected with two Y-axis leading screws (2) at supporting frame (1) top respectively by bevel gear (8); Two Y-axis leading screws (2) are set in two Y-axis slide blocks (3).
4. controlled jetting type food 3D printing device according to claim 3, is characterized in that: described Z axis positioner comprises Z axis leading screw (13), and substrate (12) is sleeved on Z axis leading screw (13); The top of Z axis leading screw (13) is arranged on the bottom of motor cabinet, and bottom is fixedly connected with the output shaft of Z axis stepper motor, and Z axis stepper motor is arranged on a support of supporting frame (1) bottom X-direction.
5. controlled jetting type food 3D printing device according to claim 1, is characterized in that: described drawing mechanism also comprises and is arranged on the disk that is rotatably connected (10) of nozzle slide block (9) bottom and provides the air compressor (14) of power for nozzle (11); The air intake of some nozzles (11) is all connected with air compressor (14); It is upper that some nozzles (11) are arranged on the disk that is rotatably connected (10), and the spout (11-1) of nozzle (11) is positioned at the top of substrate (12).
6. controlled jetting type food 3D printing device according to claim 5, is characterized in that: cross section and the horizontal direction of the spout (11-1) of described nozzle (11) are obliquely installed.
7. controlled jetting type food 3D printing device according to claim 5, is characterized in that: the periphery of described supporting frame (1) is also provided with the casing for the protection of supporting frame (1) internal structure, and casing is made by glass material; Substrate (12) is made by plating complexing gold copper-base alloy; Be rotatably connected on disk (10) and be installed with five nozzles (11).
8. controlled jetting type food 3D printing device according to claim 5, it is characterized in that: between described each nozzle (11) and air compressor (14), all by control loop, be connected, wherein each group control loop comprises main air pipeline and secondary compressed air line, the input of main air pipeline and secondary compressed air line is all connected with the air compressor (14) as compressed air source, and output is all connected with nozzle (11).
9. controlled jetting type food 3D printing device according to claim 8, it is characterized in that: the outlet of described air compressor (14) is connected with tap valve (15), on pipeline between air compressor (14) and tap valve (15), be also connected with pressure gauge (22), the entrance of nozzle (11) is connected with triple valve (18); Main air pipeline comprise successively connect for controlling pressure regulation proportioning valve (16) and first magnetic valve (17-1) of inlet amount, secondary compressed air line comprises and connects successively the second magnetic valve (17-2), Air-regulating valves (20) and branch pipe (19); Pressure regulation proportioning valve (16) and the second magnetic valve (17-2) entrance are connected respectively on two entrances of tap valve (15), and the outlet of the first magnetic valve (17-1) and branch pipe (19) is connected respectively on two entrances of triple valve (18); Wherein, the control signal output of controller (21) is connected with the control signal input of pressure regulation proportioning valve (16), the first magnetic valve (17-1), the second magnetic valve (17-2) and triple valve (18) respectively.
10. the Method of printing based on controlled jetting type food 3D printing device described in claim 1 to 9 any one, is characterized in that, comprises the following steps:
1) select corresponding food, be processed into concentration suitable can flowable slurry aqueous, be placed in respectively corresponding material feed drum;
2) with alcohol, base-plate cleaning is clean;
3) adjust the distance of nozzle and substrate, make the liquid stream focus of reference nozzle in substrate surface;
4), according to the component of every layer of food, the scope of corresponding nozzle movement velocity and air compressing acc power is set;
5) open air compressor, adjust air pressure to guarantee feeding flow field;
6) successively start pressure regulation proportioning valve and the magnetic valve of respective nozzle, nozzle carries out scanning and printing according to the track of procedure stipulation;
7) printed after one deck, the distance of substrate decline a layer thickness is carried out the printing of lower one deck, and in forming process, keep the quantitative value summation of powder feeding cylinder constant, to guarantee the forming thickness uniformity of every layer, finally realize controlled jetting type food 3D printing shaping.
CN201410140733.5A 2014-04-09 2014-04-09 A kind of controlled jetting type food 3D printing device and method Active CN103932369B (en)

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Cited By (7)

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CN104149346A (en) * 2014-07-30 2014-11-19 宁波华狮智能科技有限公司 Uniform discharging method and device for three-dimensional printing of viscous substances
CN104175557A (en) * 2014-08-06 2014-12-03 西安交通大学 3D printing head system based on droplet control and printing method thereof
CN106036972A (en) * 2016-07-29 2016-10-26 南京工业职业技术学院 3D printing machine for food
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CN108260839A (en) * 2017-01-03 2018-07-10 莫智文 From the 3 D-printing system and method for the biomaterial from esculent swift edible bird's nest
CN108260839B (en) * 2017-01-03 2020-12-01 莫智文 Three-dimensional printing system and method from biological material derived from swiftlet edible bird's nest
CN109226766A (en) * 2018-08-07 2019-01-18 北京科技大学 A kind of device and method that high throughput prepares metal-base composites
CN109226766B (en) * 2018-08-07 2020-01-10 北京科技大学 Device and method for preparing metal matrix composite material in high flux

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