CN106041080B - Dusty material laser sintering (SLS) device - Google Patents
Dusty material laser sintering (SLS) device Download PDFInfo
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- CN106041080B CN106041080B CN201610577575.9A CN201610577575A CN106041080B CN 106041080 B CN106041080 B CN 106041080B CN 201610577575 A CN201610577575 A CN 201610577575A CN 106041080 B CN106041080 B CN 106041080B
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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
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
- B22F10/362—Process control of energy beam parameters for preheating
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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
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
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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
- B22F10/70—Recycling
- B22F10/77—Recycling of gas
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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
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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
- B22F12/224—Driving means for motion along a direction within the plane of a layer
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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
- B22F12/60—Planarisation devices; Compression devices
- B22F12/63—Rollers
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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
- B22F12/70—Gas flow 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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/64—Burning or sintering processes
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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
- B22F12/49—Scanners
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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 present invention relates to a kind of dusty material laser sintering (SLS) device,Belong to 3D printing increases material manufacturing technology field,Provide a kind of simple to operate,Powdering efficiency high,Powdering effect is good,Dusty material laser sintering (SLS) device applied widely,The technical scheme used is collection material cylinder,Hydraulic jack is provided with moulding cylinder and confession powder cylinder,Pusher baffle plate is provided with hydraulic jack,Powdering slide rail is provided with the middle part of molding cavity,Roller frame is slidably mounted on powdering slide rail,Powdering roller is installed on roller frame,Roller frame leading screw is provided with roller frame,Molding cavity top is provided with preheating guide rail,Preheating housing is slidably mounted on preheating guide rail,Preheat bar is provided with preheating housing,Infrared radiation thermometer is set outside preheating housing,Laser scanning system is provided with the top of molding cavity,Air inlet and outlet device is provided with molding cavity side wall；The present invention is widely used in dusty material laser sintering (SLS).
Description
Technical field
The present invention relates to a kind of dusty material laser sintering (SLS) device, belongs to 3D printing increases material manufacturing technology field.
Background technology
In recent years, 3D printing technique has started one 3D printing upsurge with its unique advantage in academia, industrial circle.3D
Printing be according to threedimensional model, using materials such as high molecule plastic, photosensitive resin, metal dust, overlay film powders as raw material, by by
The principle of stacking plus material realizes the manufacture of threedimensional model, the collection technology such as CAD, mechanical automation in one, have rapidity,
The features such as high flexibility, high efficiency, particularly suitable for manufacture small lot labyrinth model, its product oneself automobile making, boat
Apply in the fields such as empty space flight.
Selective laser sintering（SLS）Technology belongs to one kind of 3D printing technique, and SLS is selectively layered using laser
Sintering solid powder, and make sinter molding cured layer be layering generation needed for shape part.
Its whole technical process is：During work powder cylinder piston (powder feeding piston) rise, by powder-laying roller by powder on moulding cylinder
Uniform layer overlay, computer control the two-dimensional scan track of laser beam according to the hierarchical model of prototype, and selectively sintering is solid
Body dusty material is to form part aspect.After sintering completes one layer, moulding cylinder piston declines a thickness, powdering system
New powder is spread, control laser beam scans the new layer of sintering again.So move in circles, be layering, until 3 d part is molded.SLS
The advantages of shaping is prominent is that moulding material used in it is extensive, and at present, the material that successfully can carry out SLS forming has stone
Wax, macromolecule, metal, ceramic powders etc. and its composite powder material.Because SLS moulding materials are wide in variety, materials are saved, shaping
Part function admirable and SLS shapings are without support, so SLS application is more and more extensive.
At present in SLS forming processes, still suffering from problems with needs to solve：1. powdering quality is difficult to monitor.Powdering quality
There is material impact to drip molding quality, when powdering inequality, easily cause drip molding internal flaw, so as to reduce product matter
Amount, or even there is waste product.
2. whether drip molding occurs buckling deformation and be difficult to monitor in forming process, in forming process, when warpage occurs for part
During deformation, if can not find in time, timely adjusting process parameter, it will make deformation extent increasingly severe, so as to cause into
Shape fails.
3. formed powder preheating is uneven, preheating temperature precision is low, the preheating to powder during powdering mainly has two
Individual thermal source, when the drip molding preheating to institute's powdering end in itself, second, preheating of the pre-heating system to powder.Due to size of formed part
Difference, different parts Temperature Distribution is different, and the preheating to institute's powdering end is uneven.Pre-heating system is difficult to compensate for due to shaping simultaneously
Part is uneven to preheating caused by institute's powdering end in itself, therefore ultimately results in formed powder and preheat uneven, preheating temperature control accuracy
Not enough, so as to influence drip molding quality, What is more is difficult to shape.
4. gas protection system air inlet is uneven in forming cavity, in forming process, some powder need to carry out gas shield
Anti- oxidation, but in SLS forming processes, if protecting gas skewness in forming cavity, it will drip molding is aoxidized,
So as to influence drip molding quality.
5. due to problem above be present, an equipment is difficult to shape different powder.Such as nylon is to powder preheating temperature
Control accuracy requirement is very strict, it is necessary to high-precision pre-heating system；Need to carry out gas guarantor during some powder formings
Shield, prevents drip molding from aoxidizing, it is necessary to install gas protection system.The SLS formers developed at present are primarily directed to specific
Formed powder, it is difficult to meet a variety of different powder formings.
The content of the invention
To solve technical problem existing for prior art, the invention provides a kind of simple to operate, powdering efficiency high, powdering
Effect is good, dusty material laser sintering (SLS) device applied widely.
To achieve the above object, the technical solution adopted in the present invention is dusty material laser sintering (SLS) device, including
Molding cavity, the molding cavity bottom are provided with collection material cylinder, moulding cylinder and supply powder cylinder, and the moulding cylinder is positioned at collection material cylinder and confession
It is described to collect material cylinder, moulding cylinder and for being provided with hydraulic jack in powder cylinder between powder cylinder, set on the piston rod of the hydraulic jack
Pusher baffle plate is equipped with, powdering slide rail is provided with the middle part of the molding cavity, roller frame is slidably mounted on powdering slide rail, described
Powdering roller is installed, the side of powdering roller is provided with drum drive motor, is additionally provided with the roller frame on roller frame
Roller frame leading screw, the end set of the roller frame leading screw have roller frame motor, and the molding cavity top is provided with pre-
Thermal conductivity rail, preheating housing are arranged on preheating guide rail by preheating bracket slide, are provided with preheat bar in the preheating housing, in advance
Infrared radiation thermometer is provided with outside hot housing, and preheats inner walls and is provided with reflector, is provided with the top of the molding cavity
Laser scanning system, is provided with air inlet and outlet device in the molding cavity side wall, the hydraulic jack, roller frame motor,
Preheat bar, infrared radiation thermometer and laser scanning system are connected with master control system.
Preferably, the air inlet and outlet device is mainly filled by the multiple airscoop shrouds and exhaust that are arranged in molding cavity side wall
Put, the airscoop shroud, exhaust apparatus are connected by admission line, discharge duct with gas-recycling plant, oxygen sensor
On the inwall of molding cavity, the air inlet EGR, oxygen sensor are connected with master control system.
Preferably, powdering heating rod and powdering thermometric galvanic couple, the both sides difference of roller frame are provided with the powdering roller
It is provided with infrared transmitting device and infrared receiver, the powdering heating rod, powdering thermometric galvanic couple, infrared emitting dress
Put and be connected with infrared receiver with master control system.
Preferably, described to be mainly made up of for powder cylinder four blocks of coaming plates and framework, four blocks of coaming plates head and the tail connection is solid successively
Lower portion is scheduled on, the outer wall of coaming plate is provided with ear mount, and ear mount is bolted on framework, and the coaming plate is hollow knot
Structure, it is provided with the coaming plate for powder heater, it is described to be connected for powder heater with master control system.
Preferably, the coaming plate is aluminum alloy material.
Preferably, image collecting device is additionally provided with the top of the molding cavity, the both sides of the molding cavity are set
There is light compensating lamp, described image harvester and light compensating lamp are connected with master control system.
Preferably, the outside of described image harvester is provided with lens protective cover.
Preferably, described image harvester is high-resolution industrial CCD camera, and light compensating lamp is LED.
Compared with prior art, the present invention has following technique effect：The present invention can monitor powdering quality and drip molding
Buckling deformation whether occurs, and can be alarmed, shaping powder is spread again or adjusting process parameter；Institute's powdering end can be made
Preheating is uniform, improves the pre- thermal efficiency of powder；The protection gas in forming cavity can be made even into forming cavity, and can shaped
Chamber is uniformly distributed, and is avoided drip molding in forming process and is aoxidized；Drip molding quality and production efficiency can be improved, it is right
The development of SLS forming techniques is significant；And it is applied widely, can carry out wax powder, polystyrene powder, nylon powder,
The laser sintering (SLS) of the materials such as film coated ceramic, precoated metal powder, precoated sand, makrolon powder.
Brief description of the drawings
Fig. 1 is the structural representation one of the present invention.
Fig. 2 is the structural representation two of the present invention.
Fig. 3 is the structural representation one of air inlet and outlet device in the present invention.
Fig. 4 is the structural representation two of air inlet and outlet device in the present invention.
Fig. 5 is the structural representation that powder cylinder is supplied in the present invention.
Fig. 6 is the structural representation of coaming plate in the present invention.
Fig. 7 is the structural representation that housing is preheated in the present invention.
Fig. 8 is the structural representation of roller frame in the present invention.
Fig. 9 is the structural representation of powdering roller in the present invention.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
As shown in Fig. 1, Fig. 7 to Fig. 9, dusty material laser sintering (SLS) device, including molding cavity 5, under molding cavity 5
Portion is provided with collection material cylinder 15, moulding cylinder 14 and for powder cylinder 10, and moulding cylinder 14 is positioned at collection material cylinder 15 and between powder cylinder 10, collecting material cylinder
15th, hydraulic jack 13 is provided with moulding cylinder 14 and confession powder cylinder 10, pusher baffle plate is provided with the piston rod of hydraulic jack 13
11, the middle part of molding cavity 5 is provided with powdering slide rail 19, and roller frame 20 is slidably mounted on powdering slide rail 19, on roller frame 20
Powdering roller 18 is installed, the side of powdering roller 18 is provided with drum drive motor 29, roller is additionally provided with roller frame 20
Frame leading screw 17, the end set of roller frame leading screw 17 have roller frame motor 9, and the top of molding cavity 5 is provided with preheating guide rail
7, preheating housing 24 is slidably mounted on preheating guide rail 7 by preheating support 25, so as to realize the movement to whole preheating device.
Preheat bar 37 is provided with preheating housing 7, infrared radiation thermometer 39 is provided with outside preheating housing, and preheats the inwall of housing 24 and sets
There is reflector 38, the top of molding cavity 5 is provided with laser scanning system 1, and intake and exhaust dress is provided with the side wall of molding cavity 5
Put, hydraulic jack 13, roller frame motor 9, preheat bar 37, infrared radiation thermometer 39 and laser scanning system 1 with master control system
System 8 is connected.Preheat and infrared thermometer 39 is installed on housing 24, thermometric is carried out to institute's powdering end, and feed back information to master
Control system, so as to accurately adjust preheating temperature.Preheat housing 24 to be arranged on preheating support 25, installed inside preheating housing 24
Multilayer preheat bar 37, every layer connects squarely by four preheat bars 37.The inwall of housing 24 installation reflector 38 is preheated, for pre-
The heat that hot pin 37 radiates is reflected, and improves the efficiency of heating surface.Above-mentioned all devices are connected with master control system 8, realize institute's powdering end
The uniformly precision of preheating and guarantee powder preheating temperature.
As shown in Figure 8, Figure 9, powdering heating rod 32 and powdering thermometric galvanic couple 31 are provided with powdering roller, roller frame 20
Both sides are respectively arranged with infrared transmitting device 22 and infrared receiver 30, powdering heating rod 32, powdering thermometric galvanic couple 31,
Infrared transmitting device 22 and infrared receiver 30 are connected with master control system 8.
The inside of powdering roller 18 installation powdering thermometric galvanic couple 31 and powdering heating rod 32, for carrying out thermometric to powdering roller
And preheating, so as to realize preheating of the powdering roller 18 to formed powder during powdering.Powdering roller 18 is arranged on roller frame
On 20, the side of roller frame 20 is provided with drum drive motor 29 and is connected with powdering roller 18.20 liang of side bottoms of roller frame are provided with
Roller frame leading screw 17, roller frame leading screw 17 are connected with roller frame motor 9, pass through the driving drum frame of roller frame motor 9
Leading screw 17 rotates, so as to which driving drum frame 20 moves on powdering slide rail 19.Installed on the front end roller frame 20 of powdering roller 18
There are infrared transmitting device 22 and infrared receiver 30, for measuring whether part occurs buckling deformation.When part occurs
During buckling deformation, it will the infrared ray that infrared transmitting device 22 is sent is blocked, so as to which infrared receiver 30 can not receive
To infrared signal, it will this feedback of the information to master control system 8, so as to remind operator to adjust technological parameter.
As shown in Figure 5, Figure 6, mainly it is made up of for powder cylinder 10 four blocks of coaming plates 12 and framework 34, four blocks of coaming plates 12 connect from beginning to end
It is sequentially fixed inside framework 34, the outer wall of coaming plate 12 is provided with ear mount 35, and ear mount 35 is fixed on the framework 34 by bolt 33,
Coaming plate 12 uses aluminum alloy material, and is hollow-core construction, is provided with coaming plate 12 for powder heater 36, for powder heater 36
It is connected with master control system 8.For powder heater 36 to being preheated for the formed powder in powder cylinder.The lower end of pusher baffle plate 11 leads to
Cross and be connected with the piston rod of hydraulic cylinder 13, pusher baffle plate 11 lifts mainly to be adjusted hydraulic cylinder 13 and lifted to come in fact by master control system 8
It is existing.Formation cylinder 14 and collection material cylinder 15 are installed close to for powder cylinder, formation cylinder 14 is with collecting the structure of material cylinder 15 and hydraulic system and supplying powder
Cylinder is the same.
As shown in Figures 2 to 4, air inlet and outlet device is mainly by the multiple airscoop shrouds 23 being arranged in molding cavity side wall and row
Device of air 16, airscoop shroud 23, exhaust apparatus 16 are connected by admission line 26, discharge duct 27 with gas-recycling plant 28
Connect, oxygen sensor 21 is arranged on the inwall of molding cavity 5, air inlet EGR 28, oxygen sensor 21 and master control system 8
It is connected.The one end of admission line 26 is connected with forming cavity, and netted airscoop shroud 23 is installed in the outlet port of admission line 26, for adjusting
Air-flow even into.The other end of admission line 26 is connected with air inlet EGR 28.Oxygen sensor 21 is arranged on shaped cavity
Interior diverse location, for measuring forming cavity diverse location oxygen content, and by oxygen content feedback of the information to master control system 8,
So as to adjust inert gas air inflow by air inlet EGR 28.Exhaust apparatus 16 is arranged on forming cavity front end, exhaust apparatus
16 are connected by discharge duct 27 with air inlet EGR 28, realize the supply and circulation of protective gas.
In addition, as shown in figure 1, the top of molding cavity 5 is additionally provided with image collecting device 2, the both sides of molding cavity 5 are set
Light compensating lamp 6 is equipped with, image collecting device 2 and light compensating lamp 6 are connected with master control system 8.The outside setting of image collecting device 2
There is lens protective cover 4.Image collecting device 2 is high-resolution industrial CCD camera, and light compensating lamp 6 is LED.High-resolution industrial CCD phase
Machine is arranged on the top of shaped cavity, and both sides mounted LED lamp illuminates at the top of shaped cavity, and to taking pictures, process carries out light compensation.
Lens protective cover 4 is installed in high-resolution industrial CCD camera outermost, avoids powder from polluting camera lens.Lens protective cover 4 is
Full-closed structure, material are thermostable transparent lucite.Imaging system is carried out to powdering surface and sinter layer drip molding profile
Take pictures, and pictorial information is transferred to image processing system.Image processing system receives the pictorial information of formation system shooting
Afterwards, analysis detection is carried out to the photo.According to the gray scale detection powdering of powdering whether uniform ground, according to the image of drip molding examine
Sinter layer drip molding overall size is surveyed, realizes the graphical measurements such as point, line, circle, arc, distance, ellipse, angle, and by feedback of the information
To master control system 8.Master control system 8 judges whether powdering is uniform, whether sinter layer drip molding overall size reaches according to feedback information
To requiring, judge whether to need to carry out secondary or multiple powdering, so as to send powdering system and laser sintering (SLS) system
Instruction, adjust powdering number and laser sintering (SLS) technique.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., all should be wrapped within the scope of the present invention.
Claims (8)
1. dusty material laser sintering (SLS) device, including molding cavity, it is characterised in that：The molding cavity bottom is provided with
Collect material cylinder, moulding cylinder and supply powder cylinder, the moulding cylinder is between collecting material cylinder and supplying powder cylinder, collection material cylinder, moulding cylinder and the confession
Hydraulic jack is provided with powder cylinder, is provided with pusher baffle plate on the piston rod of the hydraulic jack, in the molding cavity
Portion is provided with powdering slide rail, and roller frame is slidably mounted on powdering slide rail, and powdering roller, powdering rolling are provided with the roller frame
The side of cylinder is provided with drum drive motor, and roller frame leading screw, the end of the roller frame leading screw are additionally provided with the roller frame
Portion is provided with roller frame motor, and the molding cavity top is provided with preheating guide rail, and preheating housing is slided by preheating support
It is dynamic to be arranged on preheating guide rail, preheat bar is provided with the preheating housing, infrared radiation thermometer is set outside preheating housing, and is preheated
Inner walls are provided with reflector, are provided with laser scanning system at the top of the molding cavity, in the molding cavity side wall
It is provided with air inlet and outlet device, the hydraulic jack, roller frame motor, preheat bar, infrared radiation thermometer and laser scanning system
It is connected with master control system.
2. dusty material laser sintering (SLS) device according to claim 1, it is characterised in that：The air inlet and outlet device master
Will be by the multiple airscoop shrouds and exhaust apparatus that are arranged in molding cavity side wall, the airscoop shroud, exhaust apparatus pass through air inlet
Pipeline, discharge duct are connected with gas-recycling plant, and oxygen sensor is arranged on the inwall of molding cavity, and the air inlet follows
Loop device, oxygen sensor are connected with master control system.
3. dusty material laser sintering (SLS) device according to claim 1, it is characterised in that：Set in the powdering roller
Powdering heating rod and powdering thermometric galvanic couple are equipped with, the both sides of roller frame are respectively arranged with infrared transmitting device and infrared receiver
Device, the powdering heating rod, powdering thermometric galvanic couple, infrared transmitting device and infrared receiver with master control system phase
Connection.
4. dusty material laser sintering (SLS) device according to claim 1, it is characterised in that：It is described for powder cylinder mainly by
Four blocks of coaming plates and framework are formed, and four blocks of coaming plates head and the tail connection is sequentially fixed at lower portion, and the outer wall of coaming plate is provided with ear
Seat, ear mount are bolted on framework, and the coaming plate is hollow-core construction, is provided with the coaming plate for powder heater,
It is described to be connected for powder heater with master control system.
5. dusty material laser sintering (SLS) device according to claim 4, it is characterised in that：The coaming plate is aluminium alloy
Material.
6. dusty material laser sintering (SLS) device according to claim 1, it is characterised in that：The top of the molding cavity
Portion is additionally provided with image collecting device, and the both sides of the molding cavity are provided with light compensating lamp, described image harvester and light filling
Lamp is connected with master control system.
7. dusty material laser sintering (SLS) device according to claim 6, it is characterised in that：Described image harvester
Outside be provided with lens protective cover.
8. the dusty material laser sintering (SLS) device according to claim 6 or 7, it is characterised in that：Described image gathers
Device is high-resolution industrial CCD camera, and light compensating lamp is LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577575.9A CN106041080B (en) | 2016-07-21 | 2016-07-21 | Dusty material laser sintering (SLS) device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577575.9A CN106041080B (en) | 2016-07-21 | 2016-07-21 | Dusty material laser sintering (SLS) device |
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| Publication Number | Publication Date |
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| CN106041080A CN106041080A (en) | 2016-10-26 |
| CN106041080B true CN106041080B (en) | 2018-01-16 |
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| CN201610577575.9A Active CN106041080B (en) | 2016-07-21 | 2016-07-21 | Dusty material laser sintering (SLS) device |
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| CN106563806B (en) * | 2016-11-03 | 2018-07-03 | 西安交通大学 | A kind of electromagnetic induction heating of powder bed increasing material manufacturing supplies powdering integral system |
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