CN106346779A - Laser sintering 3D (three-dimensional) printer - Google Patents
Laser sintering 3D (three-dimensional) printer Download PDFInfo
- Publication number
- CN106346779A CN106346779A CN201611037956.4A CN201611037956A CN106346779A CN 106346779 A CN106346779 A CN 106346779A CN 201611037956 A CN201611037956 A CN 201611037956A CN 106346779 A CN106346779 A CN 106346779A
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- Prior art keywords
- powder
- dust feeder
- heating plate
- platform
- laser
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
Abstract
The invention discloses a laser sintering 3D (three-dimensional) printer. The laser sintering 3D printer comprises a machine base, a working platform, a first powder feeding device, a second powder feeding device, a heating plate, a laser and a scanning galvanometer system, wherein a focus lens, an X-axis galvanometer and a Y-axis galvanometer are arranged in the scanning galvanometer system, so a formed laser beam is small in diameter, power density is high, and the quality of power sintering is effectively improved; the movable heating plate is arranged above the working platform, and can be used for downwards pressing the powder tightly, so that a clearance between the powder can be reduced, the molding quality of a produced part is improved, and the defects of surface roughness and insufficient strength due to holes are avoided; the lower surface of the heating plate is used for heating the powder, so that energy absorption efficiency of the powder to laser is improved, the absorption energy of the powder is uniform, and the sintering quality of the powder is improved; displacement sensors are arranged in the working platform, a first power supplying platform and a second power supplying platform, and can be used for acquiring position information in real time and accurately controlling the lifting height, so that the molding quality of the produced part is improved.
Description
Technical field:
The invention belongs to 3d printing technique field, it is specifically related to a kind of laser sintered 3d printer.
Background technology:
3d prints, i.e. one kind of rapid shaping technique, it be a kind of based on mathematical model file, with powdered gold
Belong to or plastics etc. can jointing material, carry out the technology of constructed object by way of successively printing.3d prints and is typically with numeral
Technologic material printer is realizing.Often be used for modeling in fields such as Making mold, industrial designs, after be gradually available for one
The direct manufacture of a little products, has had the parts printing using this technology.Existing 3d printing technique mainly has molten
Thaw collapse amasss forming technique, Selective Laser Sintering, stereolithography technology, digital optical processing technique.
Selective Laser Sintering, with laser instrument as energy source, by the energy of infrared laser beam, makes irradiated site
The powder of plastics, wax, pottery, metal or its complex melts and is equably sintered in processing in plane.The plastic material of the method
Extensively, the dusty material that can form bonding between atom after any heating can serve as the one-tenth of Selective Laser Sintering to material
Section bar material；The powder in un-sintered region can be played a supporting role to upper strata sintering region, therefore need not additionally double-colored machine support
System；Can only be compared with the perparation of specimen or model, because Selective Laser Sintering is directly by former material with other 3d printing techniques
Material sinter molding it is ensured that the intensity of product, therefore can the complicated high intensity parts of straight forming, thus effectively reducing list
Die cost when part or small lot batch manufacture part.There is following technical problem: laser list in existing laser sintered 3d printer
It is of poor quality that the path error of unit is big, light energy loss is many, powder sintered；There is gap, make in the dusty material on workbench
The heat conductivity of dusty material is low thus impact is low to the energy absorption efficiency of laser, energy absorption is uneven, between dusty material
There is gap, lead to the rough surface of finished product, intensity is not enough；The lifting displacement error of workbench and powder feeding platform is big, affects product
Forming Quality.
Content of the invention:
For this reason, the technical problem to be solved is the laser cell of laser sintered 3d printer in prior art
That path error is big, light energy loss is many, powder sintered is of poor quality；There is gap, make in the dusty material product on workbench
Dusty material heat conductivity low thus impact is low to the energy absorption efficiency of laser, energy absorption is uneven, dusty material it
Between there is gap, lead to the rough surface of finished product, intensity not enough；The lifting displacement error of workbench and powder feeding platform is big, impact system
The Forming Quality of part, thus propose a kind of laser sintered 3d printer.
For reaching above-mentioned purpose, technical scheme is as follows:
A kind of laser sintered 3d printer, comprising:
Support, is provided with powder recovering device in described support.
Work platformses, described work platformses are arranged on the top of described support by the first cylinder.
First dust feeder and the second dust feeder, described first dust feeder and described second dust feeder are respectively provided with
In the both sides of described work platformses, described first dust feeder and described second dust feeder pass through respectively the second cylinder, the 3rd
Cylinder is arranged on the top of described support.
Heating plate, described heating plate is movably disposed at the top of described work platformses, is provided with described heating plate
First heater and temperature sensor.
Laser instrument and scanning galvanometer system, described laser instrument and described scanning galvanometer system are arranged on described work platformses
Top, described scanning galvanometer system includes focus lamp, x-axis galvanometer, y-axis galvanometer.
Preferred as technique scheme, it is provided with the first powder supplies platform in described first dust feeder, described
The lower section of one powder supplies platform connects the piston rod of described second cylinder, and the top of described first powder supplies platform is equipped with first
Dusty material, the top of described first dusty material is provided with the first roller.
It is provided with the second powder supplies platform, the lower section of described second powder supplies platform connects institute in described second dust feeder
State the second piston bar of the 3rd cylinder, the top of described first powder supplies platform is equipped with the second dusty material, described second powder
The top of powder material is provided with the second roller.
Preferred as technique scheme, described work platformses, described first powder supplies platform, described second powder supply
Answer and in platform, be provided with displacement transducer.
Preferred as technique scheme, the top of described first dust feeder and described second dust feeder sets respectively
It is equipped with secondary heating mechanism and the 3rd heater.
Preferred as technique scheme, the first end lower surface of described heating plate is connected with the 4th cylinder, and described
The lower end of four cylinders is connected with sliding shoe, and described support is fixedly installed rail plate, and described sliding shoe is led in described slip
Slide on rail.
Preferred as technique scheme, the setting direction of described rail plate and described first dust feeder and described
The closure of the second dust feeder is contrary.
Preferred as technique scheme, described heating plate lower surface is made using Heat Conduction Material, described heating plate
Four sides and upper surface are made using adiabator.
Preferred as technique scheme, the lower surface of described heating plate does release treatment.
The beneficial effects of the present invention is: it passes through setting focus lamp, x-axis galvanometer, y-axis galvanometer in scanning galvanometer system
The diameter of the laser beam being formed is little, and power density is high, effectively improves powder sintered quality；It passes through upper in work platformses
Side arranges moveable heating plate, can powder compaction downwards, reduce the gap between powder, improve the molding matter of product
Amount, it is to avoid the rough surface that hole causes and intensity are not enough, and the lower surface of heating plate heats to powder, improve powder
The energy absorption efficiency of material for laser light, dusty material energy absorption uniformly, further increases the sintering quality of powder；It leads to
Cross setting displacement transducer in work platformses, the first powder supplies platform, the second powder supplies platform, position can be obtained in real time
Confidence ceases, and accurately controls work platformses, the first powder supplies platform, the adjustable height of the second powder supplies platform, enters one
Step improves the Forming Quality of product.
Brief description:
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein:
Fig. 1 is the laser 3d printer arrangement schematic diagram of one embodiment of the invention；
Fig. 2 is the first dust feeder structural representation of one embodiment of the invention；
Second dust feeder structural representation of Fig. 3 position one embodiment of the invention；
Fig. 4 is the heating board structure schematic diagram of one embodiment of the invention.
In figure symbol description:
1- support, 2- work platformses, 3- first dust feeder, 4- second dust feeder, 5- heating plate, 6- laser instrument, 7-
Scanning galvanometer system, 8- displacement transducer, 9- computer, 101- powder recovering device, 102- first cylinder, 103- second gas
Cylinder, 104- the 3rd cylinder, 105- the 4th cylinder, 106- sliding shoe, 107- rail plate, 301- the first powder supplies platform, 302-
First dusty material, 303- first roller, 304- secondary heating mechanism, 401- the second powder supplies platform, 402- the second powder material
Material, 403- second roller, 404- the 3rd heater, 501- first heater, 502- temperature sensor, 701- focus lamp,
702-x axle galvanometer, 703-y axle galvanometer, 1031- First piston bar, 1041- second piston bar.
Specific embodiment:
As shown in figure 1, the laser sintered 3d printer of the present invention, comprising: support 1, work platformses 2, the first dust feeder
3, the second dust feeder 4, heating plate 5, laser instrument 6, scanning galvanometer system 7.
It is provided with powder recovering device 101, described powder recovering device 101 is arranged on described support 1 in described support 1
Centre position, for reclaiming the excessive powder material in described work platformses 2.
Described work platformses 2 are arranged on the top of described support 1, the cylinder of described first cylinder 102 by the first cylinder 102
Body is fixed on the upper surface of described support 1, and the lower surface of described work platformses 2 connects the piston rod of described first cylinder 102, institute
State work platformses 2 to be lifted in the effect of described first cylinder 102, the upper surface of described work platformses 2 is used for putting
Put and treat laser sintered powder, in described work platformses 2, be provided with displacement transducer 8, for obtaining the position of described work platformses 2
Confidence ceases.
Described first dust feeder 3 and described second dust feeder 4 are separately positioned on the both sides of described work platformses 2, institute
State the first dust feeder 3 and described second dust feeder 4 passes through the second cylinder 103 respectively, the 3rd cylinder 104 is arranged on described machine
The top of seat 1, the cylinder body of described second cylinder 103 and the cylinder body of described 3rd cylinder 104 are fixedly installed on described support 1.
The structure of described first dust feeder 3 is identical with the structure of described second dust feeder 4, as shown in Fig. 2 described first powder feeding dress
Put and in 3, be provided with the first powder supplies platform 301, the lower section of described first powder supplies platform 301 connects described second cylinder 103
Piston rod 1031, the top of described first powder supplies platform 301 is equipped with the first dusty material 302, described first dusty material
302 top is provided with the first roller 303, and described first roller 303, can be by described first dusty material by motor control
302 smooth being layered on described work platformses 2, the top of described first dust feeder 3 is the upper of described first dusty material 302
Side is provided with secondary heating mechanism 304, for carrying out heating and thermal insulation to described first dusty material 302.As shown in figure 3, it is described
It is provided with the second powder supplies platform 401, the lower section of described second powder supplies platform 401 connects described the in second dust feeder 4
The second piston bar 1041 of three cylinders 104, the top of described first powder supplies platform 401 is equipped with the second dusty material 402, institute
The top stating the second dusty material 402 is provided with the second roller 403.Described second roller 403, can will be described by motor control
What the second dusty material 402 was smooth is layered on described work platformses 2, and the top of described second dust feeder 4 is described second powder
The top of powder material 402 is provided with the 3rd heater 404, for carrying out heating and thermal insulation, institute to described second dusty material 402
Stating the first dusty material 302 and described second dusty material 402 can be identical dusty material or different powder
Material.It is provided with displacement transducer 8, for obtaining in described first powder supplies platform 301, described second powder supplies platform 401
First powder supplies platform 301, the positional information of described second powder supplies platform 401, are easy to accurately control described piston rod band
Move described first powder supplies platform 301, described second powder supplies platform 401 is lifted.
Described heating plate 5 is movably disposed at the top of described work platformses 2, as shown in figure 4, in described heating plate 5
It is provided with first heater 501 and temperature sensor 502.Described first heater 501 is set to realize to work platformses 2
On dusty material uniform heating, improve dusty material to the energy absorption efficiency of laser so that dusty material energy absorption
Uniformly, thus improve the sintering quality of powder, described temperature sensor 502 being set and can perceive described heater 501
Heating-up temperature and control described heater 501 to continue heating or suspend heating.The first end lower surface of described heating plate 5 is even
It is connected to the 4th cylinder 105, the lower end of described 4th cylinder 105 is connected with sliding shoe 106, and described support 1 is fixedly installed cunning
Dynamic guide rail 107, described sliding shoe 106 slides on described rail plate 107.The setting direction of described rail plate 107 and institute
State the first dust feeder 3 and the closure of described second dust feeder 4 is contrary.By described 4th cylinder 105, described slip
Block 106, described rail plate 107 drive the oscilaltion of described heating plate 5 and move left and right, and described heating plate 5 lower surface is adopted
Made with Heat Conduction Material, four sides of described heating plate 5 and upper surface are made using adiabator.Under described heating plate 5
Release treatment is done on surface, and the lower surface placing described heating plate 5 is stained with described dusty material.
Described laser instrument 6 and described scanning galvanometer system 7 are arranged on the top of described work platformses 2, described scanning galvanometer
System 7 includes focus lamp 701, x-axis galvanometer 702, y-axis galvanometer 703, and the light beam that described laser instrument 6 sends enters through focus lamp 701
Line focusing, then through x-axis galvanometer with described y-axis galvanometer carries out light path converting so that described laser beam accurately gets to described work
Make the powder area to be sintered of platform, described scanning galvanometer system 7 connects computer 9 and is controlled by computer 9, by calculating
The light path converting in described scanning galvanometer system 7 is made in machine control 9.
Operation principle: work platformses 2 decline an aspect, described second cylinder 103 and institute simultaneously by the first cylinder 102
Stating the 3rd cylinder 104 drives described first powder supplies platform 301 and described second powder supplies platform 401 to rise certain altitude, institute
State secondary heating mechanism 304 and described 3rd heater 404 to described first dusty material 302 and described second dusty material
402 are preheated, and described first roller 303 and described second roller 304 are by described first dusty material 302 and described second powder
Powder material 402 is delivered on described work platformses 2, and described sliding shoe 106 slides on described rail plate 107 and drives described heating
Plate 5 moves to the top of described work platformses 2, and described 4th cylinder 105 drives described heating plate 5 to compress downwards described work and puts down
Dusty material on platform 2, and start described first heater 501, by the lower surface of described heating plate 5 to described powder material
Material is heated, and when temperature sensor 502 detects temperature and reaches certain value, described 4th cylinder 105 drives described heating plate 5
Upper shifting, and by described sliding shoe 106 slide on described rail plate 107 drive described heating plate 5 away from described work put down
The top of platform 2, laser instrument 6 sends laser beam, and laser beam is scanned through the powder layer surface to work platformses 2 for the galvanometer system 7,
The rotation of scanning galvanometer system 7 is controlled by computer 9, and three-dimensional modeling data is cut into slices by computer 9, path planning, then
Laser beam is made to be irradiated to the powder bed table above work platformses according to computer project path by the rotation of scanning galvanometer system 7
Face, realizes laser sintered to dusty material, completes the selective laser sintering of an aspect, repeat the above steps complete the next one
Aspect laser sintered, until the completing of this whole product.
Laser sintered 3d printer described in the present embodiment, comprising: support, work platformses, the first dust feeder, second send
Powder device, heating plate, laser instrument, scanning galvanometer system.It passes through setting focus lamp, x-axis galvanometer, y in scanning galvanometer system
The diameter of the laser beam that axle galvanometer is formed is little, and power density is high, effectively improves powder sintered quality；It passes through flat in work
The top of platform arranges moveable heating plate, can powder compaction downwards, reduce the gap between powder, improve product
Forming Quality, it is to avoid the rough surface that hole causes and intensity are not enough, and the lower surface of heating plate heats to powder, improve
The energy absorption efficiency to laser for the dusty material, dusty material energy absorption uniformly, further increases the sintering matter of powder
Amount；It passes through to arrange displacement transducer, Ke Yishi in work platformses, the first powder supplies platform, the second powder supplies platform
When obtain positional information, and accurately control work platformses, the first powder supplies platform, the second powder supplies platform lifting high
Degree, further increases the Forming Quality of product.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.Right
For those of ordinary skill in the art, can also make on the basis of the above description other multi-forms change or
Change.There is no need to be exhaustive to all of embodiment.And the obvious change thus extended out or
Change among still in the protection domain of the invention.
Claims (8)
1. a kind of laser sintered 3d printer is it is characterised in that include:
Support (1), is provided with powder recovering device (101) in described support (1)；
Work platformses (2), described work platformses (2) are arranged on the top of described support (1) by the first cylinder (102)；
First dust feeder (3) and the second dust feeder (4), described first dust feeder (3) and described second dust feeder (4)
It is separately positioned on the both sides of described work platformses (2), described first dust feeder (3) and described second dust feeder (4) are respectively
It is arranged on the top of described support (1) by the second cylinder (103), the 3rd cylinder (104)；
Heating plate (5), described heating plate (5) is movably disposed at the top of described work platformses (2), described heating plate (5)
Inside it is provided with first heater (501) and temperature sensor (502)；
Laser instrument (6) and scanning galvanometer system (7), described laser instrument (6) and described scanning galvanometer system (7) are arranged on described work
Make the top of platform (2), described scanning galvanometer system (7) includes focus lamp (701), x-axis galvanometer (702), y-axis galvanometer (703).
2. laser sintered 3d printer according to claim 1 it is characterised in that:
It is provided with the first powder supplies platform (301) in described first dust feeder (3), described first powder supplies platform (301)
Lower section connects the piston rod (1031) of described second cylinder (103), and the top of described first powder supplies platform (301) is equipped with the
One dusty material (302), the top of described first dusty material (302) is provided with the first roller (303)；
It is provided with the second powder supplies platform (401) in described second dust feeder (4), described second powder supplies platform (401)
Lower section connects the second piston bar (1041) of described 3rd cylinder (104), the top laying of described first powder supplies platform (401)
There is the second dusty material (402), the top of described second dusty material (402) is provided with the second roller (403).
3. laser sintered 3d printer according to claim 2 it is characterised in that: described work platformses (2), described first
It is provided with displacement transducer (8) in powder supplies platform (301), described second powder supplies platform (401).
4. laser sintered 3d printer according to claim 2 it is characterised in that: described first dust feeder (3) and institute
The top stating the second dust feeder (4) is respectively arranged with secondary heating mechanism (304) and the 3rd heater (404).
5. laser sintered 3d printer according to claim 1 it is characterised in that: under the first end of described heating plate (5)
Surface is connected with the 4th cylinder (105), and the lower end of described 4th cylinder (105) is connected with sliding shoe (106), described support (1)
On be fixedly installed rail plate (107), described sliding shoe (106) is slided described rail plate (107) is upper.
6. laser sintered 3d printer according to claim 5 it is characterised in that: the setting of described rail plate (107)
Direction is contrary with the closure of described first dust feeder (3) and described second dust feeder (4).
7. laser sintered 3d printer according to claim 5 it is characterised in that: described heating plate (5) lower surface adopts
Heat Conduction Material is made, and four sides of described heating plate (5) and upper surface are made using adiabator.
8. laser sintered 3d printer according to claim 7 it is characterised in that: the lower surface of described heating plate (5) does
Release treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037956.4A CN106346779A (en) | 2016-11-23 | 2016-11-23 | Laser sintering 3D (three-dimensional) printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611037956.4A CN106346779A (en) | 2016-11-23 | 2016-11-23 | Laser sintering 3D (three-dimensional) printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106346779A true CN106346779A (en) | 2017-01-25 |
Family
ID=57861764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611037956.4A Withdrawn CN106346779A (en) | 2016-11-23 | 2016-11-23 | Laser sintering 3D (three-dimensional) printer |
Country Status (1)
| Country | Link |
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| CN (1) | CN106346779A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106914618A (en) * | 2017-05-03 | 2017-07-04 | 广东工业大学 | A kind of laser sintered increasing material process equipment |
| CN106956430A (en) * | 2017-03-29 | 2017-07-18 | 深圳市大业激光成型技术有限公司 | The calibrating installation of galvanometer scanning system a kind of and apply its 3D printer system |
| 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 |
| CN108673888A (en) * | 2018-07-18 | 2018-10-19 | 北京化工大学 | A kind of focus ultrasonic polymer 3D printing equipment and processing method |
| WO2018194687A1 (en) * | 2017-04-21 | 2018-10-25 | Hewlett-Packard Development Company, L.P. | Additive manufacturing |
| CN108943323A (en) * | 2017-05-18 | 2018-12-07 | 昆山博力迈三维打印科技有限公司 | A kind of ceramics 3D printer |
| CN109366985A (en) * | 2018-11-20 | 2019-02-22 | 青岛科技大学 | A kind of laser sintered 3D printing molding machine of rubber powder and Method of printing |
| CN110696361A (en) * | 2019-10-14 | 2020-01-17 | 华育昌(肇庆)智能科技研究有限公司 | 3D printer |
| CN115969013A (en) * | 2023-01-10 | 2023-04-18 | 大连工业大学 | 3D printing equipment for coupling control of coaxial extrusion and laser-targeted curing of surimi |
| EP4135969A4 (en) * | 2020-04-17 | 2024-01-03 | Freemelt Ab | Preheating of powder bed |
-
2016
- 2016-11-23 CN CN201611037956.4A patent/CN106346779A/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106956430A (en) * | 2017-03-29 | 2017-07-18 | 深圳市大业激光成型技术有限公司 | The calibrating installation of galvanometer scanning system a kind of and apply its 3D printer system |
| WO2018194687A1 (en) * | 2017-04-21 | 2018-10-25 | Hewlett-Packard Development Company, L.P. | Additive manufacturing |
| CN106914618A (en) * | 2017-05-03 | 2017-07-04 | 广东工业大学 | A kind of laser sintered increasing material process equipment |
| CN108943323A (en) * | 2017-05-18 | 2018-12-07 | 昆山博力迈三维打印科技有限公司 | A kind of ceramics 3D printer |
| 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 |
| CN107379527B (en) * | 2017-07-25 | 2019-12-24 | 华中科技大学 | Preheating method and device suitable for powder-laying type additive manufacturing |
| CN108673888A (en) * | 2018-07-18 | 2018-10-19 | 北京化工大学 | A kind of focus ultrasonic polymer 3D printing equipment and processing method |
| CN109366985A (en) * | 2018-11-20 | 2019-02-22 | 青岛科技大学 | A kind of laser sintered 3D printing molding machine of rubber powder and Method of printing |
| CN110696361A (en) * | 2019-10-14 | 2020-01-17 | 华育昌(肇庆)智能科技研究有限公司 | 3D printer |
| CN110696361B (en) * | 2019-10-14 | 2020-06-23 | 华育昌(肇庆)智能科技研究有限公司 | 3D printer |
| EP4135969A4 (en) * | 2020-04-17 | 2024-01-03 | Freemelt Ab | Preheating of powder bed |
| CN115969013A (en) * | 2023-01-10 | 2023-04-18 | 大连工业大学 | 3D printing equipment for coupling control of coaxial extrusion and laser-targeted curing of surimi |
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