CN110014652A - Powder uniform high temperature preheating structure and method in a kind of closed cavity - Google Patents
Powder uniform high temperature preheating structure and method in a kind of closed cavity Download PDFInfo
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- CN110014652A CN110014652A CN201910398858.0A CN201910398858A CN110014652A CN 110014652 A CN110014652 A CN 110014652A CN 201910398858 A CN201910398858 A CN 201910398858A CN 110014652 A CN110014652 A CN 110014652A
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- 239000000843 powder Substances 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 102
- 230000005855 radiation Effects 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 30
- 206010020843 Hyperthermia Diseases 0.000 claims abstract description 26
- 230000036031 hyperthermia Effects 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims description 21
- 238000010146 3D printing Methods 0.000 claims description 15
- 238000007639 printing Methods 0.000 claims description 10
- 239000000919 ceramic Substances 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000009877 rendering Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 210000001364 upper extremity Anatomy 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000000110 selective laser sintering Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/295—Heating elements
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Powder Metallurgy (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The present invention provides powder uniform high temperature preheating structure and method in a kind of closed cavity, and powder uniform high temperature preheating structure includes: fixing seat unit and hyperthermia radiation heating unit in closed cavity；Hyperthermia radiation heating unit includes radiant heating shell, and hyperthermia radiation heating unit can move left and right；Left radiating heat element is hingedly installed in the left side of radiant heating shell, and right radiating heat element is hingedly arranged in right side；The left radiating heat element and the right radiating heat element are symmetrical set, and can be rotated relative to the radiant heating shell, and then adjust radiation scope.Advantage are as follows: 1) it can according to heating need adjust high and low position, left-right position and the power of heating structure, it is easy to use, it is applied widely；2) disassembly of heating unit structure can be carried out according to the requirement of the rate of heat addition；3) computer heating control is simple, high-efficient；4) directly metal powder is preheated above metal powder, is preheated uniform and high-efficient.
Description
Technical field
The invention belongs to 3D printing thermal sintering technical fields, and in particular to powder uniform high temperature is pre- in a kind of closed cavity
Heat structure and method.
Background technique
3D printing technique, referred to as increases material manufacturing technology in the industry, equipment print form is selective laser sintering high score earlier
Sub- dusty material, as general artistic model and prototype.And with the development of material science, there is novel high-performance polymerization
Object material is laid a good foundation to expand the application field of macromolecule laser 3D printing machine.
The laser sintered 3D printing equipment of polymeric powder needs heating device to preheat surface layer powder, if necessary to beat
The high polymer material glass temperature for being printed as shape is higher, and guarantees not occurring to shape warping phenomenon in print procedure, is just sure to
Make glass transition temperature of the heating device to the preheating temperature of powder close to material, before powder is not sintered, preheating temperature
Higher, sintering temperature field is more uniform, and forming effect is better.When the glass transition temperature of dusty material is excessively high, it is to preheating
The thermal efficiency requirement of device is higher, for example PEEK material, fusing point reach 340 DEG C, and generally requiring preheating temperature is more than 300 DEG C,
Reaching this temperature must be completed in a short time, and otherwise be easy to cause powder scaling loss and excessively bonding.This undoubtedly sets to heating
Standby structure proposes high requirement.
In the prior art, most methods for using substrate bottom-heated, it may be assumed that spread by power spreading device in the upper surface of substrate
Powder；Then, start heating device, pre- hot substrate, and powder is passed up to by the heat of substrate, thus pre- hot substrate upper berth
If powder, and then reach the pre-heat effect to powder.Such mode has the following deficiencies: heating device is fixed under substrate
Portion, the powder that heat conducts upwards and pre- hot substrate and substrate are laid with, although can be laid with to substrate and substrate at printing initial stage
Powder preheated, but with the promotion of printing height, it may be assumed that with the continuous improvement of the powder compacting number of plies, heating device with
The distance of powder finished surface continues to increase, it is difficult to effectively be preheated to the powder of finished surface.Therefore, how one is designed
Kind can be the key that high-melting-point polymer laser 3D printing device to the heating equipment that powder is effectively preheated.
Summary of the invention
In view of the defects existing in the prior art, the present invention provide in a kind of closed cavity powder uniform high temperature preheating structure and
Method can effectively solve the above problems.
The technical solution adopted by the invention is as follows:
The present invention provides powder uniform high temperature preheating structure in a kind of closed cavity, comprising: fixing seat unit (100) and height
Warm radiant heating unit (200)；
The fixed top for hanging on closed cavity of the fixing seat unit (100), including fixing seat ontology (101), it is described
The center of fixing seat ontology (101) opens up laser emitting hole (102)；There are four supporting legs for fixing seat ontology (101) tool, each
The supporting leg is rectangle rack structure, respectively left front supporting leg (103), left back supporting leg (104), right anterior branch leg (105) and the right side
Rear support leg (106)；Liftable installs left slideway (107) above for the left front supporting leg (103) and the left back supporting leg (104)；Institute
Stating right anterior branch leg (105) and the right rear support leg (106), liftable installs right slideway (108) above；
The hyperthermia radiation heating unit (200) includes radiant heating shell (201), the radiant heating shell (201)
Central area be the aperture (202) being connected to the laser emitting hole (102)；The top of the radiant heating shell (201)
Left rail (203) are installed in left side, and right guide rail (204) is installed on right side；The left rail (203) and the left slideway (107) are slided
Connection；The right guide rail (204) is slidably connected with the right slideway (108), and then makes the hyperthermia radiation heating unit (200)
It can move left and right；Left radiating heat element is hingedly installed in the left side of the radiant heating shell (201), and right spoke is hingedly arranged in right side
Penetrate heating element；The left radiating heat element and the right radiating heat element are symmetrical set, can the relatively described radiation
Heated shell (201) is rotated, and then adjusts radiation scope；The front side of the radiant heating shell (201) and rear side are respectively set
Horizontal the first infrared radiator (208) is set, the first infrared reflective plate is installed below first infrared radiator (208)
(209)；First infrared radiator (208) emits downwards infrared ray, and reflects through first infrared reflective plate (209)
Afterwards, it is emitted from top.
Preferably, the left radiating heat element and the right radiating heat element include: ceramic insulation block (205) with
And radiant heating chamber；The ceramic insulation block (205) is located at the outside of the radiant heating chamber；The inner wall of the radiant heating chamber
It arranges the second infrared reflective plate (206), the radiant heating is intracavitary to be mounted equidistant multiple second infrared radiators (207), described
Powder of second infrared radiator (207) on the printing substrate being disposed below emits infrared ray.
Preferably, the radiation adjustable range of the left radiating heat element and the right radiating heat element is ± 25 DEG C.
Preferably, the spacing of second infrared radiator (207) is 15mm~25mm.
Preferably, distance of the bottom surface of the hyperthermia radiation heating unit (200) apart from printing substrate be 150mm~
250mm。
The present invention also provides a kind of pre-heating means of powder uniform high temperature preheating structure in closed cavity, including following step
It is rapid:
Step 1, powder uniform high temperature preheating structure in closed cavity is hung on right above the center of 3D printing working chamber；
Wherein, it is locked at the top of fixing seat unit (100) and 3D printing working chamber；
Step 2, when initial, the height of hyperthermia radiation heating unit (200) is adjusted along rectangle rack structure, is adjusted to setting
Height value；It is laid with the areal extent of metal powder in advance according to substrate surface, adjusts left radiating heat element and right radiant heating portion
The angle of radiation of part makes the radiations heat energy stepless action of left radiating heat element and right radiating heat element in metal powder；
Step 3, then, it is laid with metal powder to substrate surface, heating temperature is set according to metal powder property, to control
Make the transmission power of each first infrared radiator (208) and the second infrared radiator (207)；First infrared radiator (208)
Metal powder is preheated with the second infrared radiator (207)；
Specifically, the first infrared radiator (208) and the infrared ray of the second infrared radiator (207) transmitting are not made directly
For metal powder；First infrared reflective plate is directly acted on for the infrared ray of the first infrared radiator (208), transmitting
(209), it and through the first infrared reflective plate (209) reflects upwards；But since the first infrared reflective plate (209) is heated, thus to
Metal powder transmits heat and preheated metallic powder；Likewise, what is emitted is red for each second infrared radiator (207)
Outside line directly acts on the second infrared reflective plate (206), and through the second infrared reflective plate (206), reflects upwards；But due to second
Infrared reflective plate (206) is heated, to transmit heat and preheated metallic powder to metal powder；
Also, during hyperthermia radiation heating unit (200) preheated metallic powder, hyperthermia radiation heating unit is pushed
(200) it is at the uniform velocity slided along the slideway or so of fixing seat unit (100), and then uniformly preheated metallic powder；
Step 4, after preheating time reaching setting time, 3D printing forming is carried out；
When this layer of printing terminates, after carrying out powdering again, hyperthermia radiation heating unit (200) are adjusted along rectangle rack structure
Height, make its rising, so that hyperthermia radiation heating unit (200) be made to remain unchanged apart from the distance of top layer's powdering, and follow
Powder uniform high temperature warm in ring performs chamber body.
Powder uniform high temperature preheating structure and method have the advantage that in a kind of closed cavity provided by the invention
1) it can need to adjust high and low position, left-right position and the power of heating structure according to heating, it is easy to use, it is applicable in model
It encloses wide；
2) disassembly of heating unit structure can be carried out according to the requirement of the rate of heat addition；
3) computer heating control is simple, high-efficient；
4) directly metal powder is preheated above metal powder, is preheated uniform and high-efficient.
Detailed description of the invention
Fig. 1 is the decomposing state figure of powder uniform high temperature preheating structure in closed cavity provided by the invention；
Fig. 2 is the sectional view of powder uniform high temperature preheating structure in closed cavity provided by the invention；
Fig. 3 is the arrangement top view of the second infrared radiator provided by the invention.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein only to
It explains the present invention, is not intended to limit the present invention.
The present invention provides powder uniform high temperature preheating structure in a kind of closed cavity, belongs to polymeric powder 3D printing sintering
Molding field mainly solves the problems, such as that the part in closed environment is heated at high temperature rapidly, also, heated height and position flexibly may be used
It adjusts, it is easy to use.
With reference to Fig. 1-Fig. 3, powder uniform high temperature preheating structure includes: fixing seat unit 100 and high temperature spoke in closed cavity
Penetrate heating unit 200；
The fixed top for hanging on closed cavity of fixing seat unit 100, including fixing seat ontology 101, fixing seat ontology 101
Center open up laser emitting hole 102；There are four supporting legs for the tool of fixing seat ontology 101, and each supporting leg is rectangle rack structure, point
It Wei not left front supporting leg 103, left back supporting leg 104, right anterior branch leg 105 and right rear support leg 106；Left front supporting leg 103 and left back supporting leg 104
Liftable installs left slideway 107 above；Liftable installs right slideway 108 above for right anterior branch leg 105 and right rear support leg 106；With reference to
Fig. 1 implements the mode of lifting are as follows: so that slideway is elevated to desired height position along rectangle rack structure, then using locking
Screw locking.
Hyperthermia radiation heating unit 200 includes radiant heating shell 201, the central area of radiant heating shell 201 be with
The aperture 202 that laser emitting hole 102 is connected to；The top left side of radiant heating shell 201 installs left rail 203, and right side installation is right
Guide rail 204；Left rail 203 is slidably connected with left slideway 107；Right guide rail 204 is slidably connected with right slideway 108, and then makes high temperature
Radiant heating unit 200 can move left and right；The left side of radiant heating shell 201 is hingedly installed by left radiating heat element, right side hinge
Connect the right radiating heat element of setting；Left radiating heat element and right radiating heat element are symmetrical set, can relative radiation add
Hot shell 201 is rotated, and then adjusts radiation scope；Horizontal is respectively arranged in the front side of radiant heating shell 201 and rear side
One infrared radiator 208 installs the first infrared reflective plate 209 below first infrared radiator 208；First infrared radiator
208 emit downwards infrared ray, and after the reflection of the first infrared reflective plate 209, are emitted from top.
Left radiating heat element and right radiating heat element include: ceramic insulation block 205 and radiant heating chamber；Ceramics
Heat insulation 205 is used for heat-blocking action.Ceramic insulation block 205 is located at the outside of radiant heating chamber；The inner wall of radiant heating chamber is arranged
Second infrared reflective plate 206, radiant heating is intracavitary to be mounted equidistant multiple second infrared radiators 207, the second infrared radiator 207
Powder on the printing substrate being disposed below emits infrared ray.
A kind of specific embodiment is described below:
Powder uniform high temperature preheating structure integral layout figure is as shown in Figure 1 in closed cavity, it can be seen that this heating structure
It is mainly made of upper and lower two parts, top is divided into fixing seat unit 100, it may be assumed that beaten from the part of 210 or more moving handle to be same
Print the installation compatible portion at the top of machine cavity body, wherein 211 be limited block；212 be block terminal；Lower part is divided into hyperthermia radiation and adds
Hot cell 200.The primary structure of upper part is suspension connecting plate, and intermediate there are a circular laser emitting holes 102, for outgoing
Laser is used, and the rectangle rack gear for adjusting heater height is further provided with.
Lower part is mainly hyperthermia radiation heating unit 200, and main includes the arragement construction of guide rail and heater, and guide rail is main
Function is to adjust moving left and right for heater for convenience.The installation and adjustment of the structure are fairly simple, top by connecting plate with
The top of cavity uses screw-threaded coupling, then in place by the heating structure of guide rail promotion lower part, and is carried out by rectangle rack gear
Height adjustment.
The whole height of superstructure is according to laser depending on the intracorporal path height of closing chamber；The main basis of substructure
It is claimed below to be designed:
1) the power 400w -1000w of heating tube (i.e. infrared radiator)
2) absorptivity 10%-30% of the dusty material to the heat radiation of specific wavelength
3) heating radiation area 300mm × 300mm-450mm × 450mm
4) rate of heat addition
Thus the geometrical relationship for designing substructure is as shown in Figure 2:
1) projection of the fluorescent tube arranged on swept area, the distance that projector distance heats gross area rectangular edges are
20-30mm
2) the practical spacing of heating lamp are as follows: 15mm-25mm
3) elevation coverage of both wings heating lamp: 25 ° -40 °
4) heated height is apart from powder bed are as follows: 150mm-250mm.
In heating process, according to material-to-be-heated thermal property parameter and the target temperature for needing to heat, can specifically it grasp
The heating power of heating lamp is controlled, to keep heating near target temperature, heating lamp can set heating temperature detection, and heat
Movement is nearby opened and closed in target temperature.
The present invention also provides a kind of pre-heating means of powder uniform high temperature preheating structure in closed cavity, including following step
It is rapid:
Step 1, powder uniform high temperature preheating structure in closed cavity is hung on right above the center of 3D printing working chamber；
Wherein, it is locked at the top of fixing seat unit 100 and 3D printing working chamber；
Step 2, when initial, the height of hyperthermia radiation heating unit 200 is adjusted along rectangle rack structure, is adjusted high to setting
Angle value；It is laid with the areal extent of metal powder in advance according to substrate surface, adjusts left radiating heat element and right radiating heat element
Angle of radiation, make the radiations heat energy stepless action of left radiating heat element and right radiating heat element in metal powder；
Step 3, then, it is laid with metal powder to substrate surface, heating temperature is set according to metal powder property, to control
Make the transmission power of each first infrared radiator 208 and the second infrared radiator 207；First infrared radiator 208 and second
Infrared radiator 207 preheats metal powder；
Specifically, the first infrared radiator 208 and the second infrared radiator 207 transmitting infrared ray and be not directly placed on
Metal powder；First infrared reflective plate 209 is directly acted on for the infrared ray of the first infrared radiator 208, transmitting, and is passed through
First reflection upwards of infrared reflective plate 209；But since the first infrared reflective plate 209 is heated, to transmit heat to metal powder
It measures and preheated metallic powder；Likewise, for each second infrared radiator 207, the infrared ray of transmitting directly acts on the
Two infrared reflective plates 206, and through the second infrared reflective plate 206, it reflects upwards；But since the second infrared reflective plate 206 is heated,
To transmit heat and preheated metallic powder to metal powder；
Also, during 200 preheated metallic powder of hyperthermia radiation heating unit, hyperthermia radiation heating unit is pushed
200 at the uniform velocity slide along slideway of fixing seat unit 100 or so, and then uniformly preheated metallic powder；
Step 4, after preheating time reaching setting time, 3D printing forming is carried out；
When this layer of printing terminates, after carrying out powdering again, hyperthermia radiation heating unit 200 is adjusted along rectangle rack structure
Highly, make its rising, so that hyperthermia radiation heating unit 200 be made to remain unchanged apart from the distance of top layer's powdering, and recycle and hold
Powder uniform high temperature warm in an actor's rendering of an operatic tune body.
Powder uniform high temperature preheating structure and method have the advantage that in a kind of closed cavity provided by the invention
1) it can need to adjust high and low position, left-right position and the power of heating structure according to heating, it is easy to use, it is applicable in model
It encloses wide；
2) disassembly of heating unit structure can be carried out according to the requirement of the rate of heat addition；
3) computer heating control is simple, high-efficient；
4) directly metal powder is preheated above metal powder, is preheated uniform and high-efficient.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
Depending on protection scope of the present invention.
Claims (6)
1. powder uniform high temperature preheating structure in a kind of closed cavity characterized by comprising fixing seat unit (100) and height
Warm radiant heating unit (200)；
The fixed top for hanging on closed cavity of the fixing seat unit (100), including fixing seat ontology (101), the fixation
The center of seat ontology (101) opens up laser emitting hole (102)；There are four supporting legs for fixing seat ontology (101) tool, each described
Supporting leg is rectangle rack structure, is propped up behind respectively left front supporting leg (103), left back supporting leg (104), right anterior branch leg (105) and the right side
Leg (106)；Liftable installs left slideway (107) above for the left front supporting leg (103) and the left back supporting leg (104)；The right side
Liftable installs right slideway (108) above for front leg strut (105) and the right rear support leg (106)；
The hyperthermia radiation heating unit (200) includes radiant heating shell (201), in the radiant heating shell (201)
Heart district domain is the aperture (202) being connected to the laser emitting hole (102)；The top left side of the radiant heating shell (201)
It installs left rail (203), right guide rail (204) is installed on right side；The left rail (203) is slidably connected with the left slideway (107)；
The right guide rail (204) is slidably connected with the right slideway (108), and then keeps the hyperthermia radiation heating unit (200) left
It moves right；Left radiating heat element is hingedly installed in the left side of the radiant heating shell (201), and right side is hingedly arranged right radiation and adds
Thermal part；The left radiating heat element and the right radiating heat element are symmetrical set, can the relatively described radiant heating
Shell (201) is rotated, and then adjusts radiation scope；Water is respectively arranged in the front side of the radiant heating shell (201) and rear side
Flat the first infrared radiator (208) installs the first infrared reflective plate (209) below first infrared radiator (208)；
First infrared radiator (208) emits downwards infrared ray, and after first infrared reflective plate (209) reflection, from upper
Side's outgoing.
2. powder uniform high temperature preheating structure in closed cavity according to claim 1, which is characterized in that the left radiation
Heating element and the right radiating heat element include: ceramic insulation block (205) and radiant heating chamber；The ceramic insulation
Block (205) is located at the outside of the radiant heating chamber；The inner wall of the radiant heating chamber arranges the second infrared reflective plate (206),
The radiant heating is intracavitary to be mounted equidistant multiple second infrared radiators (207), and second infrared radiator (207) is to being located at
Powder on printing substrate below emits infrared ray.
3. powder uniform high temperature preheating structure in closed cavity according to claim 2, which is characterized in that the left radiation
The radiation adjustable range of heating element and the right radiating heat element is ± 25 DEG C.
4. powder uniform high temperature preheating structure in closed cavity according to claim 2, which is characterized in that described second is red
The spacing of external radiation device (207) is 15mm~25mm.
5. powder uniform high temperature preheating structure in closed cavity according to claim 1, which is characterized in that the high temperature spoke
Penetrating distance of the bottom surface of heating unit (200) apart from printing substrate is 150mm~250mm.
6. the pre-heating mean of powder uniform high temperature preheating structure in a kind of described in any item closed cavities of claim 1-5,
It is characterized in that, comprising the following steps:
Step 1, powder uniform high temperature preheating structure in closed cavity is hung on right above the center of 3D printing working chamber；Its
In, it is locked at the top of fixing seat unit (100) and 3D printing working chamber；
Step 2, when initial, the height of hyperthermia radiation heating unit (200) is adjusted along rectangle rack structure, is adjusted and is arrived setting height
Value；It is laid with the areal extent of metal powder in advance according to substrate surface, adjusts left radiating heat element and right radiating heat element
Angle of radiation makes the radiations heat energy stepless action of left radiating heat element and right radiating heat element in metal powder；
Step 3, then, it is laid with metal powder to substrate surface, heating temperature is set according to metal powder property, so that control is each
The transmission power of a first infrared radiator (208) and the second infrared radiator (207)；First infrared radiator (208) and
Two infrared radiators (207) preheat metal powder；
Specifically, the first infrared radiator (208) and the second infrared radiator (207) transmitting infrared ray and be not directly placed on
Metal powder；First infrared reflective plate (209) are directly acted on for the infrared ray of the first infrared radiator (208), transmitting,
And it is reflected upwards through the first infrared reflective plate (209)；But since the first infrared reflective plate (209) is heated, thus to metal powder
End transmitting heat and preheated metallic powder；Likewise, the infrared ray of transmitting is straight for each second infrared radiator (207)
It connects and acts on the second infrared reflective plate (206), and through the second infrared reflective plate (206), reflect upwards；But due to second infrared anti-
It penetrates plate (206) to be heated, to transmit heat and preheated metallic powder to metal powder；
Also, during hyperthermia radiation heating unit (200) preheated metallic powder, hyperthermia radiation heating unit is pushed
(200) it is at the uniform velocity slided along the slideway or so of fixing seat unit (100), and then uniformly preheated metallic powder；
Step 4, after preheating time reaching setting time, 3D printing forming is carried out；
When this layer of printing terminates, after carrying out powdering again, the height of hyperthermia radiation heating unit (200) is adjusted along rectangle rack structure
Degree, makes its rising, so that hyperthermia radiation heating unit (200) be made to remain unchanged apart from the distance of top layer's powdering, and recycles and holds
Powder uniform high temperature warm in an actor's rendering of an operatic tune body.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202591611U (en) * | 2012-05-29 | 2012-12-12 | 西安科技大学 | Movable preheating device for laser rapid prototyping |
| DE102012012344A1 (en) * | 2012-03-21 | 2013-09-26 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for manufacturing workpiece e.g. three-dimensional object, involves preheating material adjacent to storage chamber located in process chamber before removing stock material from chamber and transferring to process chamber |
| CN106041080A (en) * | 2016-07-21 | 2016-10-26 | 中北大学 | Powder material laser-sintering forming device |
| CN107379527A (en) * | 2017-07-25 | 2017-11-24 | 华中科技大学 | A kind of pre-heating mean and device suitable for powdering formula increasing material manufacturing |
| WO2018193744A1 (en) * | 2017-04-19 | 2018-10-25 | 三菱電機株式会社 | Three-dimensional manufacturing device |
| CN208664399U (en) * | 2018-07-24 | 2019-03-29 | 重庆大学 | Liftable heating device and laser sintered equipment |
| CN209888157U (en) * | 2019-05-14 | 2020-01-03 | 哈尔滨福沃德多维智能装备有限公司 | Uniform high-temperature powder preheating structure in closed cavity |
-
2019
- 2019-05-14 CN CN201910398858.0A patent/CN110014652B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012012344A1 (en) * | 2012-03-21 | 2013-09-26 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for manufacturing workpiece e.g. three-dimensional object, involves preheating material adjacent to storage chamber located in process chamber before removing stock material from chamber and transferring to process chamber |
| CN202591611U (en) * | 2012-05-29 | 2012-12-12 | 西安科技大学 | Movable preheating device for laser rapid prototyping |
| CN106041080A (en) * | 2016-07-21 | 2016-10-26 | 中北大学 | Powder material laser-sintering forming device |
| WO2018193744A1 (en) * | 2017-04-19 | 2018-10-25 | 三菱電機株式会社 | Three-dimensional manufacturing device |
| CN107379527A (en) * | 2017-07-25 | 2017-11-24 | 华中科技大学 | A kind of pre-heating mean and device suitable for powdering formula increasing material manufacturing |
| CN208664399U (en) * | 2018-07-24 | 2019-03-29 | 重庆大学 | Liftable heating device and laser sintered equipment |
| CN209888157U (en) * | 2019-05-14 | 2020-01-03 | 哈尔滨福沃德多维智能装备有限公司 | Uniform high-temperature powder preheating structure in closed cavity |
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