CN107282925A - A kind of 3 D-printing device and method - Google Patents
A kind of 3 D-printing device and method Download PDFInfo
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- CN107282925A CN107282925A CN201710560370.4A CN201710560370A CN107282925A CN 107282925 A CN107282925 A CN 107282925A CN 201710560370 A CN201710560370 A CN 201710560370A CN 107282925 A CN107282925 A CN 107282925A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/41—Radiation means characterised by the type, e.g. laser or electron beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/10—Auxiliary heating means
- B22F12/13—Auxiliary heating means to preheat the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/20—Cooling means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/90—Means for process control, e.g. cameras or sensors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/32—Process control of the atmosphere, e.g. composition or pressure in a building chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/22—Driving means
- B22F12/226—Driving means for rotary motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/53—Nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/50—Means for feeding of material, e.g. heads
- B22F12/55—Two or more means for feeding material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a kind of 3 D-printing device and method.3 D-printing equipment includes raw metal conveying device, high frequency magnetic field preheating apparatus, position drive device, laser control apparatus, printhead, sensor group and controller；High frequency magnetic field preheating apparatus includes electromagnetic induction coil, and in the heating cavity for the electromagnetic induction coil formation that raw metal is delivered in the printhead by raw metal conveying device, raw metal is preheated；Printhead is delivered to the metal after correct location of pixels, preheating and exported from the raw material output port of printhead to correct location of pixels by position drive device；Laser print apparatus carries out laser heating to the metal after the preheating of correct location of pixels, realizes that three-dimensional laser is printed, and the state and positional information detected by controller according to sensor group is to the real-time control of print procedure.Production cost can be reduced while printing precision is ensured using the equipment or method of the present invention.
Description
Technical field
The present invention relates to 3 D-printing field, more particularly to a kind of 3 D-printing device and method.
Background technology
Three-dimensional printing technology originates from the U.S. in 19 end of the centurys earliest, until the seventies and eighties in 20th century is in Japan and the U.S.
Improve and be commercialized.Now common main flow three-dimensional printing technology, including stereolithography apparatus method (Stereo
Lithography Apparatus, SLA), Fused Deposition Modeling (Fused Deposition Modeling, FDM), selectivity
Laser sintered (Selecting Laser Sintering, SLS), three-dimensional powder bonding (Three Dimensional
Printing and Gluing, 3DP), it is commercialized in the 80s and 90s in 20th century in the U.S..Wherein, metal material is three-dimensional
The technology of printing, mainly there is selective laser melting process (Selective Laser Melting, SLM) and electron beam melting skill
Art (Electron Beam Melting, EBM), but SLM and EBM technologies all exist manufacturing cost it is high, printing produce metal
The low shortcoming of the density of material of part；For the shortcoming of above-mentioned SLM and EBM technologies, also occur in that and much use other shaping sides
The inexpensive metal three-dimensional printing technology of method, but there is the low problem of formed precision in these technologies.
The content of the invention
The purpose of the present invention is that there is provided 3 D-printing equipment and side in order to reduce cost while printing precision is ensured
Method.
To achieve the above object, the invention provides following scheme：
A kind of 3 D-printing equipment, including raw metal conveying device, high frequency magnetic field preheating apparatus, position driving dress
Put, laser control apparatus, printhead, sensor group and controller；
The printhead includes raw material input port, raw material output port, and the raw material input port and the raw material are defeated
Exit port is respectively arranged at the two ends of the printhead；
The raw metal conveying device is connected by pipeline with the raw material input port of the printhead, for by metal
Feedstock transportation is to printhead；
The high frequency magnetic field preheating apparatus includes forming hollow knot in electromagnetic induction coil, the electromagnetic induction coil
Structure, the hollow-core construction is heating cavity, and the electromagnetic induction coil is arranged at the inside of the printhead, the electromagnetic induction
The raw material output port of the heating cavity of coil, the raw material input port of the printhead and the printhead is communicated；The height
Frequency magnetic field preheating apparatus is used to carry out anticipation heat to the raw metal of the raw material input port input from printhead；
The position drive device is connected with the printhead, for the printhead to be adjusted to correct pixel position
Put；
The laser control apparatus includes laser and laser output optical fibre, and the laser output optical fibre is from the laser
The printhead is connected to, the laser output optical fibre is arranged at the outside of the printhead, for by from the raw material of printhead
Output port flows out to the metal after the preheating of correct location of pixels and carries out laser heating, realizes that three-dimensional laser is printed；
The sensor group is used to obtain the state and positional information needed for 3 D-printing；
The controller respectively with the sensor group, the high frequency magnetic field preheating apparatus, the laser control apparatus,
The communication signal connection of the position drive device, the raw metal conveying device, is filled for realizing to convey raw metal
Put, the control of high frequency magnetic field preheating apparatus, position drive device and laser control apparatus.
Optionally, the laser control apparatus also includes laser and laser power control, the laser power control
Device is electrically connected with the laser, and the laser is connected with the laser output optical fibre, and the laser is used to produce laser,
The laser power control is used for the size of the power for the laser for controlling the laser to produce, and the laser output optical fibre is used
Exported in the laser for producing the laser to the printhead.
Optionally, the high frequency magnetic field preheating apparatus also includes pre-add hot actuating device, the pre-add hot actuating device
Control end be connected with the controller, the output end of the pre-add hot actuating device is connected with the electromagnetic induction coil, use
Electromagnetic field of high frequency is produced in driving electromagnetic induction coil under the control in the controller.
Optionally, the 3 D-printing equipment also includes contact detecting apparatus, the contact detecting apparatus and the control
Device is connected, and the control is delivered to for detecting whether the printhead contacts with correct location of pixels, and by testing result
Device.
Optionally, the raw metal conveying device includes metal raw feed bin, raw metal conveying mechanism, the metal raw
The raw material input port of feed bin and the printhead is by pipeline connection, and the feedstock transportation mechanism is used for the raw metal
Raw metal in storehouse passes through Pipeline transport to the printhead.
Optionally, the controller be all-purpose computer, embedded computer, industrial computer or all-purpose computer with it is embedded
The complex computer systems that computer is constituted.
Optionally, the 3 D-printing equipment also includes air-tightness protection casing, protective gas conveying device, vacuum suction
Device, cooling device and cool air injection device；
The air-tightness protects casing by the high frequency magnetic field preheating apparatus, the position drive device, the laser
Control device, the printhead are enclosed in the airtight volume of the air-tightness guard box body formation；
The protective gas conveying device is connected with the position drive device, is conveyed for protective position drive device
The metal after preheating in journey；
Affiliated vacuum suction device is mechanical vacuum pump, is connected with the air-tightness guard box body phase, for described
Airtight volume is evacuated to reduce the oxygen concentration in body；
The cooling device includes water cooling plant and air cooling equipment, is installed on the outside of the 3 D-printing equipment, is used for
The 3 D-printing equipment is cooled；
The cool air injection device is connected with the position drive device, quick for being carried out to the metal after printing shaping
Cooling.
A kind of 3 D-printing method, the 3 D-printing method is applied to described 3 D-printing equipment, including following step
Suddenly：
The high frequency magnetic field being delivered to raw metal by the raw metal conveying device in the printhead is preheated
In the heating cavity of device；
Raw metal is preheated by the high frequency magnetic field preheating apparatus, the gold for being softened but not melted
Category；
The softening in printhead but the metal that does not melt are delivered to and correctly beaten by the position drive device
Position is printed, and is exported the metal for softening but not melting to correct pixel by the raw material output port of the printhead
Position；
The softening of the correct location of pixels but the metal that does not melt are carried out by the laser control apparatus
Laser is heated, and realizes that three-dimensional laser is printed.
Optionally, it is described by the laser control apparatus to the softening of the print position but the metal that does not melt
Laser heating is carried out, realizing the specific steps of three-dimensional laser printing includes：
Step S1 starts to print first layer, using supporting layer as the basis of printing first layer, and first layer is layer to be printed,
Under the control of controller, the softening but the metal that does not melt with it is to be printed with controller generation on the supporting layer
The position corresponding to first pixel among pixel queue to be printed in layer is contacted, by first pixel
Corresponding position is as correct location of pixels, and the upper surface of the supporting layer and the bottom surface of layer to be printed are coplanar；
The parameter that step S2 controllers are set according to user or controller is produced, applies to the correct location of pixels and swashs
Light, and the power of the laser applied by the controller control laser print apparatus, complete the correct location of pixels
Printing；
Step S3 controllers judge whether the printing of layer to be printed completes, if do not completed, will be treated in the layer to be printed
Do not melt as correct location of pixels by the softening but the position corresponding to next pixel among print pixel queue
The metal of change is contacted with the correct location of pixels, then repeat step S2-S3, if having completed the printing of layer to be printed,
And need to print next layer, be put into step S4, if next layer need not be printed, printing terminates；
Step S4, starts one layer of printing newly, using the layer of printing shaping as one layer new of basis of printing, new one
Layer is layer to be printed, under the control of the controller, the softening but the metal that does not melt with the layer of printing shaping with control
The position corresponding to first pixel among pixel queue to be printed in the layer to be printed that device processed is produced is contacted, institute
The position corresponding to first pixel is stated as the upper surface of the correct location of pixels, the layer of printing shaping of layer to be printed
Bottom surface with layer to be printed is coplanar, repeat step S2-S3.
Optionally, the laser power control is controlled to adjust the work(that the laser applies laser by the controller
Rate, completing the specific steps of the printing of the correct location of pixels includes：
The power of the laser of the application of the laser control apparatus is controlled by the controller, makes the print position
Metal temperature after preheating is raised but not melted, completes the printing of complementary support；
The power of the laser of the application of the laser control apparatus is controlled by the controller, makes the print position
Metal temperature rise and thawing after preheating, complete the printing of target part.
The specific embodiment provided according to the present invention, the invention discloses following technique effect：
The invention discloses 3 D-printing device and method, the 3 D-printing equipment include raw metal conveying device,
High frequency magnetic field preheating apparatus, position drive device, laser control apparatus, printhead, sensor group and controller, using high frequency
Magnetic field preheating apparatus is preheated to raw metal, makes the power needed for metal melt during laser printing to reduce, reduction
The cost of 3 D-printing, carries out laser printing using laser printing unit, it is ensured that the precision of 3 D-printing, includes high frequency magnetic
The 3 D-printing equipment of field preheating apparatus and laser control apparatus not only ensure that printing precision but also reduce cost.
In addition, realizing target part and dismountable complementary branch by adjusting the output laser power of laser control apparatus
The printing of frame, realizes the printing of the internal part that there is complicated cavity structure.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawings
Obtain other accompanying drawings.
A kind of structural representation of the one embodiment for 3 D-printing equipment that Fig. 1 provides for the present invention；
A kind of flow chart for 3 D-printing method that Fig. 2 provides for the present invention；
A kind of flow chart of one embodiment of the laser printing process for 3 D-printing method that Fig. 3 provides for the present invention；
A kind of first layer of another embodiment of the laser printing process for 3 D-printing method that Fig. 4 provides for the present invention
The flow chart of printing；
A kind of n-th layer of another embodiment of the laser printing process for 3 D-printing method that Fig. 5 provides for the present invention
The flow chart of printing (n is more than or equal to 2)；
A kind of printing effect figure for 3 D-printing method that Fig. 6 provides for the present invention；
Wherein, 1 is flexible support system, and 2 be print platform, and 3 be printhead, and 4 be pipeline, and 5 be sensor group, and 6 be height
The pre-add hot actuating device of frequency magnetic field preheating apparatus, 7 be the electromagnetic induction coil of the estimated thermal of high frequency magnetic field, and 8 be laser
The laser output optical fibre of control device, 9 be the laser power control and laser of laser control apparatus, and 12 be that vacuum suction is filled
The vavuum pump put, 13 be cool air injection device, and 14 be the protective gas bottle of protective gas conveying device, and 15 fill for contact detection
Put, 16 be that raw material send device, and 17 be that air-tightness protects casing, and 18 be raw metal, and 10 be controller, and 21 be that position drives dress
Put.
Embodiment
It is an object of the invention to provide a kind of 3 D-printing device and method.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
As shown in figure 1, a kind of 3 D-printing equipment, including preheated including raw metal conveying device 16, high frequency magnetic field
Device, position drive device, laser control apparatus, printhead 3, sensor group 5 and controller 10；
The printhead 3 includes raw material input port, raw material output port, and the raw material input port and the raw material are defeated
Exit port is respectively arranged at the two ends of the printhead；
The raw metal conveying device is connected by pipeline 4 with the raw material input port of the printhead 3, for by gold
Category raw material 18 is delivered to printhead 3；
The high frequency magnetic field preheating apparatus includes forming hollow knot in electromagnetic induction coil 7, the electromagnetic induction coil
Structure, the hollow-core construction is heating cavity, and the electromagnetic induction coil is arranged at the inside of the printhead, the electromagnetic induction
The raw material output port of the heating cavity of coil 7, the raw material input port of the printhead 3 and the printhead 3 is communicated；It is described
High frequency magnetic field preheating apparatus is used to carry out anticipation heat to the raw metal of the raw material input port input from printhead 3；
The position drive device 21 is connected with the printhead, for the printhead to be adjusted to correct pixel position
Put；
The laser control apparatus includes laser and laser output optical fibre 8, and the laser output optical fibre 8 is from the laser
Device is connected to the printhead 3, and the laser output optical fibre 8 is arranged at the outside of the printhead 3, specifically, the laser
The outlet of output optical fibre 8 and the raw material output port of the printhead 3 are mutually circumscribed, for by from the raw material output end of printhead 3
The metal that mouth is flowed out to after the preheating of correct location of pixels carries out laser heating, realizes that three-dimensional laser is printed；
The sensor group 5 is used to obtain the state and positional information needed for 3 D-printing；
The controller respectively with the sensor group, the high frequency magnetic field preheating apparatus, the laser control apparatus,
The communication signal connection of the position drive device, the raw metal conveying device, is filled for realizing to convey raw metal
Put, the control of high frequency magnetic field preheating apparatus, position drive device and laser control apparatus.
Specifically, the sensor group 5 is used to obtain the status information needed for 3 D-printing, the status information includes gold
Belong to feedstock transportation status information (including the information such as real-time speed, the position in raw metal course of conveying, and the gold currently conveyed
Belong to information of amount etc. of raw material), preheated state information (including real time temperature in preheating process and raw metal state
Information etc.), cooling system state of temperature information (including coolant water temperature and temperature) and preheating after metal feed status letter
Breath (including real-time speed, positional information and the information of quantity of pre-warmed metal of conveying in course of conveying etc.), printing
Status information (including real time position, status information etc. in print procedure)；
Optionally, the laser control apparatus also includes laser and laser power control, the laser power control
Device is electrically connected with the laser, and the laser is connected with the laser output optical fibre, and the laser is used to produce laser,
The laser power control is used for the size of the power for the laser for controlling the laser to produce, and the laser output optical fibre is used
Exported in the laser for producing the laser to the printhead.
Optionally, the high frequency magnetic field preheating apparatus also includes pre-add hot actuating device, the pre-add hot actuating device
Control end be connected with the controller, the output end of the pre-add hot actuating device is connected with the electromagnetic induction coil, use
Electromagnetic field of high frequency is produced in driving electromagnetic induction coil under the control in the controller.Specifically, the quantity of the printhead
Can be single or multiple.For example：The quantity of printhead is two, and two printheads are by two high frequency magnetic field pre-add
Thermal is heated, two high frequency magnetic field preheating apparatus common sparing structures, but is independently controlled；The original of one printhead
Expect a diameter of 50 microns of wire of output port, a diameter of 1 millimeter of gold of the raw material output port of another printhead
Belong to silk, a diameter of 1 millimeter of printhead is used to slightly print, and a diameter of 20 microns of printhead is used to finely print；Two printings
Head cooperates in print procedure, it is possible to achieve flying print.
Optionally, the position drive device 3 is Multi-shaft movement mechanism, for example：XYZ three-axis movings mechanism, five shaft mechanicals
Arm or the linkage of multiple multi-spindle machining devices, for example：Drive machinery of the mechanical device of printing with carrying out turning Milling Machining
Device interactive.
Optionally, the 3 D-printing equipment also include contact detecting apparatus 15, the contact detecting apparatus 15 with it is described
Controller 10 is connected, and for detecting whether the printhead 3 contacts with correct location of pixels, and testing result is delivered into institute
State controller 10.
Optionally, the raw metal conveying device 16 includes metal raw feed bin, raw metal conveying mechanism, the metal
The raw material input port of raw material cabin and the printhead is by pipeline connection, and the feedstock transportation mechanism is used for the metal raw
Raw metal in feed bin passes through Pipeline transport to the printhead.Specifically, the raw metal is metal silk or metal
Slurry, metal silk is the wire of the continuous certain length of certain diameter, metal paste be by metal dust, additive and
One class of organic carrier composition is applied to the paste of printing or coating, and metal paste is widely used in electronics industry.
Optionally, the controller 10 is all-purpose computer, embedded computer, industrial computer or all-purpose computer and insertion
The complex computer systems that formula computer is constituted.
Optionally, the 3 D-printing equipment is also taken out including air-tightness protection casing 17, protective gas conveying device, vacuum
Device of air 12, cooling device and cool air injection device 13；
The air-tightness protects casing 17 by the high frequency magnetic field preheating apparatus, the position drive device, swashs described
Light generating apparatus, the printhead are enclosed in the airtight volume of the air-tightness guard box body formation；
The protective gas conveying device includes protective gas bottle 14 and protective gas pipeline, the protective gas pipeline with
The position drive device connection, for the metal after the preheating in protective position drive device course of conveying；
Affiliated vacuum suction device 12 is mechanical vacuum pump, is connected with the air-tightness guard box body phase, for institute
Airtight volume is stated to be evacuated to reduce the oxygen concentration in body；
The cooling device includes water cooling plant and air cooling equipment, is installed on the outside of the 3 D-printing equipment, is used for
The 3 D-printing equipment is cooled；
The cool air injection device 13 is connected with the position drive device, fast for being carried out to the metal after printing shaping
But, optionally, the cool air injection device 13 includes cooling gas cylinder to quickly cooling.
Specifically, the vacuum suction device includes vavuum pump magnetic valve, pressure sensor block, oxygen concentration sensing mould
Block；Specifically, magnetic valve is used for controlling the switch of vavuum pump pumping management, opens, closed in vavuum pump after vavuum pump unlatching
It is preceding to close, for completely cutting off extraneous air.Oxygen concentration sensing module monitors the oxygen concentration in Photocopy Room in real time, works as oxygen concentration
Protective gas conveying device and vavuum pump are then opened when can not meet print conditions, is closed when oxygen concentration meets print conditions
Vavuum pump.The vavuum pump is installed on the outside of 3 D-printing equipment.The vacuum suction device is controlled by control unit.
Specifically, the airtight protection casing is used for the printing shaping mistake that high frequency magnetic field preheating apparatus and laser are heated
Journey and isolated from atmosphere.
Optionally, the 3 D-printing equipment can also include excess metal collector, for collecting excess metal；Opening
Metal quilt in the preparation stage and printing pause, print procedure before beginning formally to print after preheating is trans-regional over long distances
When transfer, excess metal collector prevents accumulation of metal and dropped；Excess metal collector is controlled by computer.
The excess metal collector is using turnable or rotatable structure, mainly by collecting board, rotating shaft, rotation driving
Mechanism (such as motor or electromagnet) is constituted；Operationally, the collecting board of excess metal collector is turned over excess metal collector
Turn or rotate the lower section of tremendously high frequency magnetic field preheating apparatus；Space below high frequency magnetic field preheating apparatus, which is adjusted, to be large enough to hold
Receive the collecting board of excess metal collector.
As shown in Fig. 2 a kind of 3 D-printing method, the 3 D-printing method is applied to described 3 D-printing equipment,
Comprise the following steps：
Raw metal is delivered to the high frequency magnetic field in the printhead by the raw metal conveying device by step 201
In the heating cavity of preheating apparatus；
Step 202 is preheated by the high frequency magnetic field preheating apparatus to raw metal, is softened but not melted
The metal of change；
The softening in printhead but the metal that does not melt are delivered to just by step 203 by the position drive device
True print position, and exported the metal for softening but not melting to correct by the raw material output port of the printhead
Location of pixels；
Step 204 is by the laser control apparatus to the softening of the correct location of pixels but the gold that does not melt
Category carries out laser heating, realizes that three-dimensional laser is printed.
Optionally, as shown in figure 3, as a kind of embodiment, by the laser control apparatus to institute described in step 204
The metal stated the softening of print position but do not melted carries out laser heating, realizes the specific steps bag of three-dimensional laser printing
Include：
Step S1 starts to print first layer, using supporting layer as the basis of printing first layer, and first layer is layer to be printed,
Under the control of controller, the softening but the metal that does not melt with it is to be printed with controller generation on the supporting layer
The position corresponding to first pixel among pixel queue to be printed in layer is contacted, by first pixel
Corresponding position is as correct location of pixels, and the upper surface of the supporting layer and the bottom surface of layer to be printed are coplanar；
The parameter that step S2 controllers are set according to user or controller is produced, applies to the correct location of pixels and swashs
Light, and the power of the laser applied by the controller control laser print apparatus, complete the correct location of pixels
Printing；
Step S3 controllers judge whether the printing of layer to be printed completes, if do not completed, will be treated in the layer to be printed
Do not melt as correct location of pixels by the softening but the position corresponding to next pixel among print pixel queue
The metal of change is contacted with the correct location of pixels, then repeat step S2-S3, if having completed the printing of layer to be printed,
And need to print next layer, be put into step S4, if next layer need not be printed, printing terminates；
Step S4, starts one layer of printing newly, using the layer of printing shaping as one layer new of basis of printing, new one
Layer is layer to be printed, under the control of the controller, the softening but the metal that does not melt with the layer of printing shaping with control
The position corresponding to first pixel among pixel queue to be printed in the layer to be printed that device processed is produced is contacted, institute
The position corresponding to first pixel is stated as the upper surface of the correct location of pixels, the layer of printing shaping of layer to be printed
Bottom surface with layer to be printed is coplanar, repeat step S2-S3.
Optionally, it is described to control the laser power control to adjust the laser application laser by the controller
Power, completing the specific steps of the printing of the correct location of pixels includes：
The power of the laser of the application of the laser control apparatus is controlled by the controller, makes the print position
Metal temperature after preheating is raised but not melted, completes the printing of complementary support；
The power of the laser of the application of the laser control apparatus is controlled by the controller, makes the print position
Metal temperature rise and thawing after preheating, complete the printing of target part.
As another embodiment, institute of the laser control apparatus to the print position is passed through described in step 204
The metal stated softening but do not melted carries out laser heating, realizes that three-dimensional laser is printed, including the step of printing first layer and printing
The step of n-th layer, wherein, n is more than or equal to 2, is specially：
As shown in figure 4, first layer prints flow, comprise the following steps：
Step S401 preparation sex works are ready, prepare the first layer for starting to print metal object；Using print platform as beating
Print the basis of first layer；Controller adjusts the distance between raw material output port and print platform 2 of printhead 3 to meet printing
The need for precision.Under normal circumstances, first layer should be shelf layer, and not part layer, is not required between shelf layer and print platform
Will too strong adhesion, the part for being easy to printing to complete can remove easily from print platform.
Under the control of the controller, raw metal is delivered to by the high frequency magnetic field by the raw metal conveying device
Preheating apparatus, while printhead is moved to the original position for first pixel to be printed by position drive device；
Step S402 is preheated by the high frequency magnetic field preheating apparatus to raw metal, is softened but not melted
The metal of change；Specifically, the raw metal to be printed is heated by the high frequency magnetic field preheating apparatus, in high frequency magnetic field
The interior critical-temperature for being heated rapidly to melt by raw metal, at this moment metal is softened but is also equipped with certain rigidity intensity,
The metal after heating is continued using this residual intensity to be transported to print position from the output port of printhead；
The signal that step S403 controllers are detected by contact detecting apparatus judges that the metal after softening is with print platform
No formation good contact；
If the metal after step S404 softenings does not reach print platform also, time-out position drive device waits raw material
Metal after softening is delivered to print platform by conveying device；
Step S405 is set according to print conditions, it is determined whether heated using laser, if heated using laser, is opened
Laser is simultaneously adjusted to suitable power output.
Step S406 is entered by the laser control apparatus to the softening of the print position but the metal that does not melt
Row laser is heated, and is realized three-dimensionally shaped；Specifically, in print position, carrying out laser heating by laser print apparatus, making pre-add
Metal after heat is welded together with molded metal or supporting layer, by changing the depth of focus and power of laser, change layer with
Adhesion between layer and between pixel, realizes the printing of auxiliary stand and target part.
Step S407 judges whether laser heating completes according to print conditions, after the completion of, then perform S408 and close laser
Device, if do not completed, continuously carries out S406 until completion.
Step S409 judges whether to complete the printing of all pixels according to the setting of print conditions, if completed,
The printing of all pixels, then perform step S411.If also residual pixel is not completed, step 410 is performed.
Step S410 printheads are moved to next location of pixels and export the metal after preheating, perform S402 to S409.
Step S411 terminates first layer printing.
As shown in figure 5, the flow of printing n-th layer (wherein n is more than or equal to 2)：
First layers of the step S501 to complete printing starts the printing of rest layers as new basal layer, and controller adjustment is beaten
The need for the distance between print first 3 and new basal layer are to meet printing precision.
Step S502 under the control of the controller, the softening but the metal that does not melt with the new basal layer with
The position corresponding to first pixel among pixel queue to be printed in the layer to be printed that the controller is produced is carried out
Contact, using the position corresponding to first pixel as print position, the upper surface of the new basal layer is beaten with waiting
The bottom surface for printing layer is coplanar；
The metal for softening but not melting is delivered to laser printing by the position drive device and filled by step S503
The print position put, while judging whether the metal after softening forms good contact with new basal layer；
If the metal after step S504 softenings does not reach new basal layer also, time-out position drive device waits former
Metal after softening is delivered to new basal layer by material conveying device；
Step S505 is set according to print conditions, it is determined whether heated using laser, if heated using laser, is opened
Laser is simultaneously adjusted to suitable power output.
Step S506 is entered by the laser control apparatus to the softening of the print position but the metal that does not melt
Row laser is heated, and is realized three-dimensionally shaped；Specifically, in print position, carrying out laser heating by laser control apparatus, making pre-add
Metal after heat is welded together with molded metal or supporting layer, by changing the depth of focus and power of laser, change layer with
Adhesion between layer and between pixel, realizes the printing of auxiliary stand and target part.As shown in printing effect Fig. 6, figure
Middle M02 regions are still a part for shelf layer, then do not export laser or output low power laser, and reduction Coating combination is strong
Degree, it is easy to disassemble.M05 regions are part layers in figure, then output high-power laser, the metal of softening is thoroughly melted and in before
The layer of printing is merged completely, forms closely knit design of part.
Step S507 judges whether laser heating completes according to print conditions, after the completion of, then perform S508 and close laser
Device, if do not completed, continuously carries out S506 until completion.
Step S509 judges whether to complete all layers of printing, if having completed institute according to the setting of print conditions
There is the printing of layer, then perform step S511.If also remaining layer is not completed, step step S510 is performed.
Untill step S510 printheads are moved to next pixel, and export it is preheated after metal, repeat S502
To S509.
S511 terminates this printing.
Specifically, the process of the pixel queue to be printed in the layer to be printed that the controller is produced is divided into two kinds of situations：
Shape, structure of the controller according to target part (part that will print), are automatically generated dismountable
Complementary type-script (such as the complementary support of generation synchronous with target part), dismantles for convenience, dismountable complementary
The forming process of most pixels of type-script need not strengthen its structural strength by laser irradiation；It is dismountable complementary
All pixels that need not strengthen its structural strength by laser irradiation of type-script are all marked as to apply sharp
The parameter (situation one) of light；The forming process of all pixels point in the entity area of target part needs to strengthen by laser irradiation
Its structural strength, the pixel in all entity areas of target part is all marked as the parameter (situation two) for needing to apply laser.
Among specific implementation process：Part print area, mainly determined by the shape for the part to be printed and/or
Set, or determined by the algorithm of computer optimization by user, for example：When printing first layer, for the ease of that will be printed
Part be fixed on supporting layer but for the ease of printed part is disassembled from supporting layer, in some printings
(four Along ents of the contour line of such as first layer) need to apply between the metal after preheating and supporting layer and swashed in region
Light is to strengthen connection between the two, and metal that need not be after preheating in other print areas of first layer and support
Apply laser between layer in order to avoid causing the adhesion between printed part and supporting layer too strong and being difficult to dismantle.
Among specific implementation process：Part print area, region and the low shaping for being broadly divided into high shaping strength is strong
The region of degree.For example：All layers of target part are set as the region of high shaping strength, the region of high shaping strength is to melt
Mode connect shaping (i.e. the intensity of laser irradiation be enough to melt the contact site of the metal of the metal and molded layer after preheating
Position)；All layers of this kind of complementary supporting structure of stake body are set as the region of low shaping strength, the region of low shaping strength
Forming process be not required to apply the laser of laser or application and be not enough to melt the metal of metal and molded layer after preheating.
Among specific implementation process：Part print area, is broadly divided into the region of high shaping strength, middle shaping strength
Region and low shaping strength region.For example：The region of high shaping strength the need for corresponding to all layers of target part
Be set as high shaping strength region, the region of shaping strength in the need for corresponding to all layers of target part be set as it is middle into
All layers of complementary supporting structure, are set as the region of low shaping strength by type intensity area, and per class print area institute
The laser intensity that need to apply can be set；Wherein, it is not necessary to apply the situation of laser it is considered that laser intensity is zero.
Among specific implementation process：During the laser printing, to the further laser of metal after preheating
The fusing degree or softening degree of heating are adjustable, by adjusting temperature height to realize, and are controlled by computer；Laser is heated
The flowing velocity of metal afterwards and the flow within the unit interval are adjustable, are realized by adjusting extrusion pressure size, and by
The control of computer.
Among specific implementation process：Apply between the metal of described metal after preheating and molded layer
Laser, is to start to apply laser until connecing before the metal and the metal of molded layer after monitoring preheating contact with each other
After touching.
Among specific implementation process：The way of contact between metal and print position after preheating is that point is dipped in or dragged
Drag；Described point is dipped in, that is, the metal after preheating is contacted and connected with the metal of molded layer in the corresponding position of a pixel
Be lifted after connecing, part preheat after metal and molded layer metal adhesion and stay in above the metal of molded layer, its
Metal after the preheating of its part is separated with the metal of molded layer, when print next pixel when again with molded layer
Metal contact；Described dragging, i.e., the metal after being preheated in print procedure exists in the form of metal stream, and metal stream exists
Need printing region in relative to molded layer metal it is mobile while holding contacted with the metal of molded layer, metal
The front portion of stream is contacted in the metal with molded layer, then forms pixel, follow-up metal stream and pixel institute to be printed
Corresponding position contact, until printing terminates or time-out printing.
Optionally, controlled to apply the power of laser by the controller, complete the specific step of the printing of the print position
Suddenly include：
The power of the application laser of the laser print apparatus is controlled by the controller, makes the pre- of the print position
Metal temperature after heating is raised but not melted, completes the printing of complementary support；
The power of the application laser of the laser print apparatus is controlled by the controller, makes the pre- of the print position
Metal temperature rise and thawing after heating, complete the printing of target part.
The specific embodiment provided according to the present invention, the invention discloses following technique effect：
(1) apply laser during the present invention in pixel by being molded, be different from existing some metals three-dimensional and beat
The electric arc that print technology is used is generated heat, high-temperature plasma is heated, the principle of contact resistance heating, is solved by space of single pixel point
Molded metallic object is melted or improved the temperature of interface by analysis degree with the current interface for being molded pixel, is improved
Print the inter-layer bonding force of the metallic object produced；(should especially in the state of pixel is currently molded still in fusing
Molten state is held time extremely short), using laser by the side instant melting of the molded metallic object of the interface, molded
Metallic object side produces miniature " molten bath " of the interface, it is possible to achieve connect both in the way of " melting ", the company
The process connect is similar to " electric welding ", is by accurate welding to molded metallic object equivalent to each pixel；Therefore, use
The part strength height of the technology printing generation of the present invention, print speed are faster than the mode of heating of contact resistance heating.
(2) by the present invention in that with metal (especially with molten metal) and the molded metal of fusing or softening
Body is contacted, and the contact process exist the layer that is molded between mechanicals efforts, pixel and with it is molded before
Gas between layer is driven away, gap is filled, between pixel and " the gap network " of interlayer few (" gap network " is tied
Structure is generally deposited in existing selective laser melting process SLM and electron beam melting technology EBM using paving metal bisque mode
, it is necessary to which carrying out high-temperature heat treatment after printing improves density of material)；Therefore, print what is produced using the technology of the present invention
Metal parts density is high.
(3) metal raw of each pixel of Sensor monitoring is used during the present invention in single pixel point by being molded
Material is realized to each pixel forming process with whether realizing electrical connection (i.e. whether both contact) between molded metallic object
Real-time monitoring, it is ensured that each pixel effectively can be connected with molded metallic object.
(4) present invention is by controlling the pixel and laser power between the metallic object of printing shaping of specific region
Power, it is synchronous to produce the low metallic object conduct of inter-layer bonding force while the metal parts of high intensity inter-layer bonding force is printed
Complementary support, complementary support is removed after printing terminates；Can also by multiple printheads (or use multiple metals
Liquefaction unit), one or some printheads output higher melt metal material be used for print target part, another or it is another
A little printhead outputs are used to print complementary stake body compared with the metal material of low melting point, after printing is complete melt low-melting-point metal
Change and remove；Therefore such as the present invention can synchronously produce complementary support/stake body, interior to realize printing complex parts
There is the metal parts of complicated cavity and pipeline in portion.
(5) present invention is by (especially melt after) after raw metal pre-add heat fusing or softening, under the irradiation of laser, liquid
State metal with while printing shaping metallic object is contacted, quickly move printhead, can because liquid metal itself has viscosity
With the smaller pixel of the internal diameter for producing the raw material output port than the printhead；Due to the raw material output port of printhead
Position is accurately controlled, and the position for the liquid metal extruded, which is also accurately controlled, (is different from some existing use " sprays
The metal three-dimensional printing technology of metal powder " mode), and use the mode of " laser welding " come connect pixel with it is molded
Metallic object, the energy sphere of action of laser is small and controllability is high (is different from what some existing metal three-dimensional printing technologies were used
Electric arc heating, high-temperature plasma heating, contact resistance mode of heating), therefore, formed precision of the invention is high.
(6) position drive device of the invention controls the conveying of the metal after preheating using simple motion driving mechanism
Position and inter-layer bonding force is strengthened using laser irradiation mode, the breadth of printing depends on the motion control of position drive device
Scope, if using large-scale Multi-shaft movement mechanism, such as large-scale XYZ three-axis movings controlling organization, it is possible to print band large-scale metal
Structural member.
(8) present invention uses the mode of high-frequency electromagnetic induction preheating, it is not necessary to high-power laser system (high power laser
System price is expensive, and the service life of laser is universal within 10,000 hours), it is possible to printed under non-vacuum environment
(electron beam melting technology EBM needs to be molded under vacuum conditions, and EBM device fabrications cost and use cost are high for shaping
It is high), the implementation cost of invention is cheap, i.e. production cost and use cost is low.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.For system disclosed in embodiment
For, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is said referring to method part
It is bright.
Specific case used herein is set forth to the principle and embodiment of invention, the explanation of above example
The method and its core concept for helping to understand the present invention are only intended to, described embodiment is only that the part of the present invention is real
Example, rather than whole embodiments are applied, based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
It is described above, only as the preferred embodiment of the present invention, it is impossible to the practical range of the present invention is limited with this, i.e.,
The equivalent transformation done according to claims of the present invention and description and modification, all still fall within the model that the present invention covers
Enclose.
Claims (10)
1. a kind of 3 D-printing equipment, it is characterised in that including raw metal conveying device, high frequency magnetic field preheating apparatus, position
Put drive device, laser control apparatus, printhead, sensor group and controller；
The printhead includes raw material input port, raw material output port, the raw material input port and the raw material output end
Mouth is respectively arranged at the two ends of the printhead；
The raw metal conveying device is connected by pipeline with the raw material input port of the printhead, for by raw metal
It is delivered to printhead；
The high frequency magnetic field preheating apparatus includes forming hollow-core construction, institute in electromagnetic induction coil, the electromagnetic induction coil
Hollow-core construction is stated for heating cavity, the electromagnetic induction coil is arranged at the inside of the printhead, the electromagnetic induction coil
Heating cavity, the raw material input port of the printhead and the raw material output port of the printhead communicate；The high frequency magnetic
Field preheating apparatus is used to carry out anticipation heat to the raw metal of the raw material input port input from printhead；
The position drive device is connected with the printhead, for the printhead to be adjusted to correct location of pixels；
The laser control apparatus includes laser and laser output optical fibre, and the laser output optical fibre is connected from the laser
To the printhead, the laser output optical fibre is arranged at the outside of the printhead, for will be exported from the raw material of printhead
Port flows out to the metal after the preheating of correct location of pixels and carries out laser heating, realizes that three-dimensional laser is printed；
The sensor group is used to obtain the state and positional information needed for 3 D-printing；
The controller respectively with the sensor group, the high frequency magnetic field preheating apparatus, the laser control apparatus, described
The communication signal connection of position drive device, the raw metal conveying device, for realizing to raw metal conveying device, height
The control of frequency magnetic field preheating apparatus, position drive device and laser control apparatus.
2. printing device according to claim 1, it is characterised in that the laser control apparatus also includes laser power control
Device processed, the laser power control is electrically connected with the laser, and the laser is connected with the laser output optical fibre, institute
Stating laser is used to produce laser, and the laser power control is used for the big of the power for the laser for controlling the laser to produce
Small, the laser that the laser output optical fibre is used to produce in the laser is exported to the printhead.
3. a kind of 3 D-printing equipment according to claim 1, it is characterised in that the high frequency magnetic field preheating apparatus is also
Including pre-add hot actuating device, the control end of the pre-add hot actuating device is connected with the controller, the pre-add thermal drivers
The output end of device is connected with the electromagnetic induction coil, for driving electromagnetic induction coil production under the control of the controller
Raw electromagnetic field of high frequency.
4. a kind of 3 D-printing equipment according to claim 1, it is characterised in that described also including contact detecting apparatus
Contact detecting apparatus is connected with the controller, for detecting whether the printhead contacts with correct location of pixels, and will
Testing result is delivered to the controller.
5. a kind of 3 D-printing equipment according to claim 1, it is characterised in that the raw metal conveying device includes
Metal raw feed bin, raw metal conveying mechanism, the raw material input port of the metal raw feed bin and the printhead pass through pipeline
Connection, the feedstock transportation mechanism is used to the raw metal in the metal raw feed bin passing through Pipeline transport to the printing
Head.
6. a kind of 3 D-printing equipment according to claim 1, it is characterised in that the controller be all-purpose computer,
The complex computer systems that embedded computer, industrial computer or all-purpose computer and embedded computer are constituted.
7. a kind of 3 D-printing equipment according to claim 1, it is characterised in that the 3 D-printing equipment also includes gas
Close property protection casing, protective gas conveying device, vacuum suction device, cooling device and cool air injection device；
The air-tightness protects casing by the high frequency magnetic field preheating apparatus, the position drive device, the laser controlling
Device, the printhead are enclosed in the airtight volume of the air-tightness guard box body formation；
The protective gas conveying device is connected with the position drive device, in protective position drive device course of conveying
Preheating after metal；
Affiliated vacuum suction device is mechanical vacuum pump, is connected with the air-tightness guard box body phase, for described airtight
Property space is evacuated to reduce the oxygen concentration in body；
The cooling device includes water cooling plant and air cooling equipment, the outside of the 3 D-printing equipment is installed on, for institute
3 D-printing equipment is stated to be cooled；
The cool air injection device is connected with the position drive device, for carrying out fast quickly cooling to the metal after printing shaping
But.
8. a kind of 3 D-printing method, it is characterised in that the 3 D-printing method is applied to claim 1-7 any one institute
The 3 D-printing equipment stated, comprises the following steps：
Raw metal is delivered to the high frequency magnetic field preheating apparatus in the printhead by the raw metal conveying device
Heating cavity in；
Raw metal is preheated by the high frequency magnetic field preheating apparatus, the metal for being softened but not melted；
By the way that the position drive device is by the softening in printhead but the metal that does not melt is delivered to correct printing position
Put, and exported the metal for softening but not melting to correct pixel position by the raw material output port of the printhead
Put；
By the way that the laser control apparatus is to the softening of the correct location of pixels but the metal that does not melt carries out laser
Heating, realizes that three-dimensional laser is printed.
9. a kind of 3 D-printing method according to claim 8, it is characterised in that described to pass through the laser control apparatus
The softening to the print position but metal not melted carries out laser heating, realizes the specific steps of three-dimensional laser printing
Including：
Step S1 starts to print first layer, using supporting layer as the basis of printing first layer, and first layer is layer to be printed, in control
Under the control of device, in the layer to be printed produced with the controller in the softening but the metal and the supporting layer that do not melt
Pixel queue to be printed among first pixel corresponding to position contacted, by first pixel institute it is right
The position answered is as correct location of pixels, and the upper surface of the supporting layer and the bottom surface of layer to be printed are coplanar；
The parameter that step S2 controllers are set according to user or controller is produced, laser is applied to the correct location of pixels,
And the power of the laser of the laser print apparatus application is controlled by the controller, complete beating for the correct location of pixels
Print；
Step S3 controllers judge whether the printing of layer to be printed completes, will be to be printed in the layer to be printed if do not completed
The position corresponding to next pixel among pixel queue do not melt the softening but as correct location of pixels
Metal is contacted with the correct location of pixels, then repeat step S2-S3, if the printing of layer to be printed has been completed, and
Need to print next layer, be put into step S4, if next layer need not be printed, printing terminates；
Step S4, starts one layer of printing newly, and using the layer of printing shaping as one layer new of basis of printing, new one layer is
Layer to be printed, under the control of the controller, the softening but the metal and on the layer of printing shaping and controller that do not melt
The position corresponding to first pixel among pixel queue to be printed in the layer to be printed produced is contacted, and described the
Position corresponding to one pixel is as the correct location of pixels of layer to be printed, and the upper surface of the layer of printing shaping is with treating
The bottom surface of printable layer is coplanar, repeat step S2-S3.
10. a kind of 3 D-printing method according to claim 9, it is characterised in that swashed by controller control is described
Light power controller adjusts the power that the laser applies laser, completes the specific step of the printing of the correct location of pixels
Suddenly include：
The power of the laser of the application of the laser control apparatus is controlled by the controller, makes the pre-add of the print position
Metal temperature after heat is raised but not melted, completes the printing of complementary support；
The power of the laser of the application of the laser control apparatus is controlled by the controller, makes the pre-add of the print position
Metal temperature rise and thawing after heat, complete the printing of target part.
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| EP3807032A4 (en) * | 2018-06-12 | 2022-05-04 | Al-Bohacen Kft. | Method and apparatus for producing a 3-dimensional metal object, in particular a 3-dimensional solid metal object |
| CN109971140A (en) * | 2019-03-20 | 2019-07-05 | 福建师范大学 | A kind of preparation method and its device with three dimentional heat conduction network chain composite material |
| CN109971140B (en) * | 2019-03-20 | 2021-12-31 | 福建师范大学 | Preparation method and device of composite material with three-dimensional heat conduction network chain |
| CN116890124A (en) * | 2023-09-11 | 2023-10-17 | 山东创瑞激光科技有限公司 | Powder jar structure of controllable preheating in succession |
| CN116890124B (en) * | 2023-09-11 | 2023-11-14 | 山东创瑞激光科技有限公司 | Powder jar structure of controllable preheating in succession |
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| CN107282925B (en) | 2019-11-26 |
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Effective date of registration: 20191226 Address after: No.218, Zhufeng street, hi tech Zone, Shijiazhuang City, Hebei Province 16-111 Patentee after: Hebei dianzan Electronic Technology Co., Ltd Address before: 052160, Zhenxing North Street, Xiguan village, Xiguan Town, Xiguan Town, Shijiazhuang City, Hebei, Gaocheng, 42 Patentee before: Yue Haijun |