CN106041080A - Powder material laser-sintering forming device - Google Patents

Powder material laser-sintering forming device Download PDF

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Publication number
CN106041080A
CN106041080A CN201610577575.9A CN201610577575A CN106041080A CN 106041080 A CN106041080 A CN 106041080A CN 201610577575 A CN201610577575 A CN 201610577575A CN 106041080 A CN106041080 A CN 106041080A
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powder
cylinder
preheating
molding cavity
sls
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CN201610577575.9A
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CN106041080B (en
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白培康
赵占勇
李玉新
刘斌
王建宏
刘增禄
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North University of China
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North University of China
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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
    • 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/10—Auxiliary heating means
    • B22F12/13—Auxiliary heating means to preheat the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
    • B22F12/22—Driving means
    • B22F12/224—Driving means for motion along a direction within the plane of a layer
    • 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
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • 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
    • 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
    • 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
    • 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)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)

Abstract

The invention relates to a powder material laser-sintering forming device, belongs to the technical field of 3D printing additive manufacturing technologies and provides a powder material laser-sintering forming device which is simple to operate, high in powder spreading efficiency, good in powder spreading effect and wide in application range. The powder material laser-sintering forming device adopts the technical scheme that hydraulic oil cylinders are arranged in a material collecting cylinder, a forming cylinder and a powder supply cylinder; material pushing baffles are arranged on the hydraulic oil cylinders; powder spreading sliding rails are arranged in the middle of a forming cavity; a roller rack is mounted on the powder spreading sliding rails in a sliding way; a powder spreading roller is mounted on the roller rack; roller rack lead screws are arranged on the roller rack; preheating guide rails are arranged at the upper part of the forming cavity; a preheating housing is mounted on the preheating guide rails in a sliding way; preheating rods are arranged in the preheating housing; an infrared thermometer is arranged outside the preheating housing; a laser scanning system is arranged at the top of the forming cavity; and a gas intake and exhaust device is arranged on the side wall of the forming cavity. The powder material laser-sintering forming device is widely used for laser-sintering forming of powder material.

Description

Dusty material laser sintering (SLS) device
Technical field
The present invention relates to a kind of dusty material laser sintering (SLS) device, belong to 3D and print increasing material manufacturing technology field.
Background technology
In recent years, 3D printing technique has started one 3D with the advantage of its uniqueness printed upsurge in academia, industrial circle.3D Printing is according to threedimensional model, with materials such as high molecule plastic, photosensitive resin, metal dust, overlay film powders as raw material, by by The technology such as stacking adds the principle of material to realize the manufacture of threedimensional model, collects CAD, mechanical automation in one, have rapidity, The feature such as high flexibility, high efficiency, is particularly suitable for manufacturing the labyrinth model of small lot, and its product is own in automobile making, boat The fields such as empty space flight have been applied.
Selective laser sintering (SLS) technology belongs to the one of 3D printing technique, and SLS is to use laser to be layered selectively Sintering solid powder, and make the cured layer of sinter molding be layering generate required form part.Its whole technical process is: During work, powder cylinder piston (powder feeding piston) rises, by powder-laying roller by powder uniform spreading last layer on moulding cylinder, computer root Hierarchical model according to prototype controls the two-dimensional scan track of laser beam, and sintering solid dusty material is to form part selectively One aspect.After having sintered one layer, moulding cylinder piston declines a thickness, and paving powder system is spread new powder, controlled laser beam again Scanning sinters new layer.So move in circles, be layering, until 3 d part molding.SLS shapes prominent advantage and is its institute The moulding material used is extensive, and at present, the material that can successfully carry out SLS forming has paraffin, macromolecule, metal, ceramics End etc. and composite powder material thereof.Owing to SLS moulding material is wide in variety, materials are saved, drip molding function admirable and SLS become Shape is without supporting, so the application of SLS is more and more extensive.
At present in SLS forming process, still suffering from problems with needs to solve: 1. paving powder difficult quality monitoring.Paving powder quality Drip molding quality is had material impact, during the powder inequality of pawnshop, easily causes drip molding internal flaw, thus reduce product matter , even there is waste product in amount.
2. in forming process, whether drip molding occurs buckling deformation to be difficult to monitor, in forming process, when part generation warpage During deformation, if can not find in time, timely adjusting process parameter, it will make deformation extent increasingly severe, thus cause into Shape failure.
3. formed powder preheating is uneven, preheating temperature accuracy is low, and during paving powder, the preheating to powder mainly has two Individual thermal source, one is the drip molding preheating to spread powder itself, and two is the pre-heating system preheating to powder.Due to size of formed part Difference, different parts Temperature Distribution is different, and the preheating to spread powder is uneven.Pre-heating system is difficult to compensate for owing to shaping simultaneously The preheating that spread powder is caused by part itself is uneven, therefore ultimately results in formed powder preheating inequality, preheats temperature control precision Not, thus affecting drip molding quality, What is more is difficult to shape.
4. in forming cavity, gas protection system air inlet is uneven, and in forming process, some powder needs to carry out gas shield Anti-oxidation, but in SLS forming process, if forming cavity is protected gas skewness, it will make drip molding aoxidize, Thus affect drip molding quality.
5. owing to there is problem above, an equipment is difficult to shape different powder.Such as nylon preheats temperature to powder Control accuracy requires the strictest, it is necessary to high-precision pre-heating system；Need during some powder forming to carry out gas guarantor Protect, prevent drip molding from aoxidizing, it is necessary to gas protection system is installed.The SLS former of exploitation is primarily directed to specific at present Formed powder, it is difficult to meet multiple different powder forming.
Summary of the invention
For solving the technical problem that prior art exists, the invention provides a kind of simple to operate, paving powder efficiency is high, spreads powder Effective, applied widely dusty material laser sintering (SLS) device.
For achieving the above object, the technical solution adopted in the present invention is dusty material laser sintering (SLS) device, including Molding cavity, described molding cavity bottom is provided with the cylinder that gathers materials, moulding cylinder and supplies powder cylinder, and described moulding cylinder is positioned at gather materials cylinder and confession Between powder cylinder, described in gather materials cylinder, moulding cylinder and for being provided with hydraulic jack in powder cylinder, the piston rod of described hydraulic jack sets Being equipped with pusher baffle plate, the middle part of described molding cavity is provided with paving powder slide rail, and cylinder frame is slidably mounted on paving powder slide rail, described Being provided with paving powder cylinder on cylinder frame, the side of paving powder cylinder is provided with drum drive motor, described cylinder frame is additionally provided with Cylinder frame leading screw, the end of described cylinder frame leading screw is provided with cylinder frame and drives motor, and described molding cavity top is provided with pre- Thermal conductance rail, preheating housing is arranged on preheating guide rail by preheating bracket slide, is provided with pre-hot pin, in advance in described preheating housing Hot housing is outside equipped with infrared radiation thermometer, and preheating inner walls is provided with reflector, and the top of described molding cavity is provided with Laser scanning system, described molding cavity sidewall is provided with air inlet and outlet device, described hydraulic jack, cylinder frame drive motor, Pre-hot pin, infrared radiation thermometer are all connected with master control system with laser scanning system.
Preferably, described air inlet and outlet device is mainly filled by the multiple airscoop shrouds being arranged on molding cavity sidewall and aerofluxus Putting, described airscoop shroud, exhaust apparatus are all connected with gas-recycling plant by admission line, discharge duct, oxygen sensor Being arranged on the inwall of molding cavity, described air inlet circulating device, oxygen sensor are connected with master control system.
Preferably, being provided with paving powder heating rod and paving powder thermometric galvanic couple in described paving powder cylinder, the both sides of cylinder frame are respectively It is provided with infrared transmitting device and infrared receiver, described paving powder heating rod, paving powder thermometric galvanic couple, infrared emitting dress Put and be all connected with master control system with infrared receiver.
Preferably, described confession powder cylinder is mainly made up of four blocks of coaming plates and framework, and described four blocks of coaming plates head and the tail connect solid successively Being scheduled on lower portion, the outer wall of coaming plate is provided with ear mount, and ear mount is bolted on framework, and described coaming plate is hollow knot Structure, is provided with confession powder heater in described coaming plate, described confession powder heater is connected with master control system.
Preferably, described coaming plate is aluminum alloy material.
Preferably, the top of described molding cavity is additionally provided with image collecting device, and the both sides of described molding cavity are arranged Light compensating lamp, described image collecting device is had all to be connected with master control system with light compensating lamp.
Preferably, the outside of described image collecting device is provided with lens protective cover.
Preferably, described image collector is set to high-resolution industrial CCD camera, and light compensating lamp is LED.
Compared with prior art, the present invention has following technical effect that the present invention can monitor paving opaque amount and drip molding Whether there is buckling deformation, and can report to the police, make shaping grain weight paving or adjusting process parameter；Spread powder can be made Preheating uniformly, improves the pre-thermal efficiency of powder；Can make the protection gas in forming cavity even into forming cavity, and can shape Chamber is uniformly distributed, it is to avoid in forming process, drip molding aoxidizes；Drip molding quality and production efficiency can be improve, right The development of SLS forming technique is significant；And applied widely, it is possible to 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, Merlon powder.
Accompanying drawing explanation
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 in the present invention for powder cylinder.
Fig. 6 is the structural representation of coaming plate in the present invention.
Fig. 7 is the structural representation preheating housing in the present invention.
Fig. 8 is the structural representation of intermediate roll frame of the present invention.
Fig. 9 is the structural representation of middle berth powder cylinder of the present invention.
Detailed description of the invention
In order to make the technical problem to be solved, technical scheme and beneficial effect clearer, below tie Close drawings and Examples, the present invention is further elaborated.Only should be appreciated that specific embodiment described herein In order 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, molding cavity 5 times Portion is provided with the cylinder 15 that gathers materials, moulding cylinder 14 and confession powder cylinder 10, and moulding cylinder 14 is gathering materials between cylinder 15 and confession powder cylinder 10, and gather materials cylinder 15, it is provided with hydraulic jack 13 in moulding cylinder 14 and confession powder cylinder 10, the piston rod of hydraulic jack 13 is provided with pusher baffle plate 11, the middle part of molding cavity 5 is provided with paving powder slide rail 19, and cylinder frame 20 is slidably mounted on paving powder slide rail 19, on cylinder frame 20 Being provided with paving powder cylinder 18, the side of paving powder cylinder 18 is provided with drum drive motor 29, cylinder frame 20 is additionally provided with cylinder Frame leading screw 17, the end of cylinder frame leading screw 17 is provided with cylinder frame and drives motor 9, and molding cavity 5 top is provided with preheating guide rail 7, preheating housing 24 is slidably mounted on preheating guide rail 7 by preheating support 25, thus realizes the movement to whole preheating device. Being provided with pre-hot pin 37 in preheating housing 7, preheating housing is outside equipped with infrared radiation thermometer 39, and preheating housing 24 inwall is arranged There are reflector 38, the top of molding cavity 5 to be provided with laser scanning system 1, molding cavity 5 sidewall is provided with intake and exhaust dress Put, hydraulic jack 13, cylinder frame drive motor 9, pre-hot pin 37, infrared radiation thermometer 39 and laser scanning system 1 all with master control system System 8 is connected.Installation infrared line temperature measurer 39 on preheating housing 24, carries out thermometric, and feeds back information to main spread powder Ore-controlling Role, thus accurately adjust preheating temperature.Preheating housing 24 is arranged on preheating support 25, internally installed at preheating housing 24 The pre-hot pin of multilamellar 37, every layer is connected into square by four pre-hot pins 37.Preheating housing 24 inwall installs reflector 38, in advance The heat of hot pin 37 radiation reflects, and improves the efficiency of heating surface.Above-mentioned all devices are connected with master control system 8, it is achieved spread powder Uniformly preheating and the precision of guarantee powder preheating temperature.
As shown in Figure 8, Figure 9, in paving powder cylinder, it is provided with paving powder heating rod 32 and paving powder thermometric galvanic couple 31, cylinder frame 20 Both sides are respectively arranged with infrared transmitting device 22 and infrared receiver 30, paving powder heating rod 32, paving powder thermometric galvanic couple 31, Infrared transmitting device 22 is all connected with master control system 8 with infrared receiver 30.
Paving powder cylinder 18 internally installed paving powder thermometric galvanic couple 31 and paving powder heating rod 32, for carrying out thermometric to paving powder cylinder And preheating, thus realize the preheating spreading powder cylinder 18 to formed powder during paving powder.Paving powder cylinder 18 is arranged on cylinder frame On 20, cylinder frame 20 side is provided with drum drive motor 29 and is connected with paving powder cylinder 18.20 liang of side bottoms of cylinder frame are provided with Cylinder frame leading screw 17, cylinder frame leading screw 17 drives motor 9 to be connected with cylinder frame, drives motor 9 to drive cylinder frame by cylinder frame Leading screw 17 rotates, thus drives cylinder frame 20 to move on paving powder slide rail 19.Paving powder cylinder 18 front end cylinder frame 20 is installed There are infrared transmitting device 22 and infrared receiver 30, are used for measuring whether part occurs buckling deformation.When part occurs During buckling deformation, it will block the infrared ray that infrared transmitting device 22 sends, thus infrared receiver 30 can not receive To infrared signal, it will this information is fed back to master control system 8, thus reminds operator to regulate technological parameter.
As shown in Figure 5, Figure 6, being mainly made up of four blocks of coaming plates 12 and framework 34 for powder cylinder 10, four pieces of coaming plate 12 head and the tail connect Being sequentially fixed at framework 34 internal, the outer wall of coaming plate 12 is provided with ear mount 35, and ear mount 35 is fixing on the framework 34 by bolt 33, Coaming plate 12 uses aluminum alloy material, and is hollow-core construction, is provided with for powder heater 36, for powder heater 36 in coaming plate 12 It is connected with master control system 8.Preheat for the formed powder in powder cylinder for powder heater 36.Pusher baffle plate 11 lower end leads to Crossing the piston rod with hydraulic cylinder 13 to be connected, pusher baffle plate 11 lifts and is mainly lifted real by master control system 8 to adjust hydraulic cylinder 13 Existing.Near for powder cylinder formation cylinder 14 and the cylinder 15 that gathers materials be installed, formation cylinder 14 with gather materials cylinder 15 structure and hydraulic system with for 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 on molding cavity sidewall and row Device of air 16, airscoop shroud 23, exhaust apparatus 16 are all connected with gas-recycling plant 28 by admission line 26, discharge duct 27 Connecing, oxygen sensor 21 is arranged on the inwall of molding cavity 5, air inlet circulating device 28, oxygen sensor 21 and master control system 8 It is connected.Admission line 26 one end is connected with forming cavity, and netted airscoop shroud 23 is installed in admission line 26 exit position, is used for adjusting Air-flow even into.Admission line 26 other end is connected with air inlet circulating device 28.Oxygen sensor 21 is arranged on shaped cavity Interior diverse location, is used for measuring forming cavity diverse location oxygen content, and oxygen content information is fed back to master control system 8, Thus adjust noble gas air inflow by air inlet circulating device 28.Exhaust apparatus 16 is arranged on forming cavity front end, exhaust apparatus 16 are connected with air inlet circulating device 28 by discharge duct 27, it is achieved the supply of protective gas and circulation.
Additionally, as it is 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 set Being equipped with light compensating lamp 6, image collecting device 2 is all connected with master control system 8 with light compensating lamp 6.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, illuminates at both sides, shaped cavity top mounted LED lamp, the process of taking pictures is carried out light compensation. In high-resolution industrial CCD camera outermost, lens protective cover 4 is installed, it is to avoid camera lens is polluted by powder.Lens protective cover 4 is Full-closed structure, material is thermostable transparent lucite.Paving powder surface and sinter layer drip molding profile are carried out by imaging system Take pictures, and pictorial information is transferred to image processing system.Image processing system receives the pictorial information of formation system shooting After, this photo is analyzed detection.Gray scale detection paving powder whether uniform ground according to paving powder, examines according to the image of drip molding Survey sinter layer drip molding overall size, it is achieved the graphical measurements such as point, line, circle, arc, distance, ellipse, angle, and information is fed back To master control system 8.Master control system 8 is according to feedback information, it is judged that paving powder is the most uniform, and whether sinter layer drip molding overall size reaches To requiring, it may be judged whether need carry out secondary or repeatedly spread powder, thus paving powder system and laser sintering (SLS) system are sent Instruction, adjusts paving powder number of times and laser sintering (SLS) technique.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention Any amendment, equivalent and the improvement etc. made within god and principle, all should wrap within the scope of the present invention.

Claims (8)

1. dusty material laser sintering (SLS) device, including molding cavity, it is characterised in that: described molding cavity bottom is provided with Gather materials cylinder, moulding cylinder and for powder cylinder, described moulding cylinder gathering materials cylinder and for powder cylinder between, described in gather materials cylinder, moulding cylinder and confession It is provided with hydraulic jack in powder cylinder, the piston rod of described hydraulic jack is provided with pusher baffle plate, in described molding cavity Portion is provided with paving powder slide rail, and cylinder frame is slidably mounted on paving powder slide rail, and described cylinder frame is provided with paving powder cylinder, paving powder rolling The side of cylinder is provided with drum drive motor, and described cylinder frame is additionally provided with cylinder frame leading screw, the end of described cylinder frame leading screw Portion is provided with cylinder frame and drives motor, and described molding cavity top is provided with preheating guide rail, and preheating housing is sliding by preheating support Dynamic being arranged on preheats on guide rail, is provided with pre-hot pin in described preheating housing, arranges infrared radiation thermometer, and preheating outside preheating housing Inner walls is provided with reflector, and the top of described molding cavity is provided with laser scanning system, on described molding cavity sidewall Being provided with air inlet and outlet device, described hydraulic jack, cylinder frame drive motor, pre-hot pin, infrared radiation thermometer and laser scanning system All it is connected with master control system.
Dusty material laser sintering (SLS) device the most according to claim 1, it is characterised in that: described air inlet and outlet device master Air inlet is all passed through by the multiple airscoop shrouds being arranged on molding cavity sidewall and exhaust apparatus, described airscoop shroud, exhaust apparatus Pipeline, discharge duct are connected with gas-recycling plant, and oxygen sensor is arranged on the inwall of molding cavity, and described air inlet follows Loop device, oxygen sensor are connected with master control system.
Dusty material laser sintering (SLS) device the most according to claim 1, it is characterised in that: set in described paving powder cylinder Being equipped with paving powder heating rod and paving powder thermometric galvanic couple, the both sides of cylinder frame are respectively arranged with infrared transmitting device and infrared receiver Device, described paving powder heating rod, paving powder thermometric galvanic couple, infrared transmitting device and infrared receiver all with master control system phase Connect.
Dusty material laser sintering (SLS) device the most according to claim 1, it is characterised in that: described for powder cylinder mainly by Four blocks of coaming plates and framework are constituted, and described 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 is bolted on framework, and described coaming plate is hollow-core construction, is provided with for powder heater in described coaming plate, Described confession powder heater is connected with master control system.
Dusty material laser sintering (SLS) device the most according to claim 4, it is characterised in that: described coaming plate is aluminium alloy Material.
Dusty material laser sintering (SLS) device the most according to claim 1, it is characterised in that: the top of described molding cavity Portion is additionally provided with image collecting device, and the both sides of described molding cavity are provided with light compensating lamp, described image collecting device and light filling Lamp is all connected with master control system.
Dusty material laser sintering (SLS) device the most according to claim 6, it is characterised in that: described image collecting device Outside be provided with lens protective cover.
8. according to the dusty material laser sintering (SLS) device described in claim 6 or 7, it is characterised in that: described image acquisition Device is high-resolution industrial CCD camera, and light compensating lamp is LED.
CN201610577575.9A 2016-07-21 2016-07-21 Dusty material laser sintering (SLS) device Active CN106041080B (en)

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CN106735199A (en) * 2016-11-28 2017-05-31 南通金源智能技术有限公司 For the PMS of laser accurate forming technique
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CN109047761A (en) * 2018-08-24 2018-12-21 西安科技大学 A kind of metal increasing material manufacturing technique
CN109158597A (en) * 2018-08-20 2019-01-08 湖南华曙高科技有限责任公司 Powdering quality detection method, equipment, readable storage medium storing program for executing and three-dimension object manufacturing method
CN109420762A (en) * 2017-08-31 2019-03-05 上海微电子装备（集团）股份有限公司 A kind of 3D printing device and method
CN109514856A (en) * 2018-10-30 2019-03-26 谢明仿 A kind of two-way double roller power spreading device of laser gain material materials being fabricated bucket type
CN109604598A (en) * 2019-01-09 2019-04-12 深圳光韵达光电科技股份有限公司 A kind of increase and decrease material combined-machining equipment
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CN110014652A (en) * 2019-05-14 2019-07-16 哈尔滨福沃德多维智能装备有限公司 Powder uniform high temperature preheating structure and method in a kind of closed cavity
CN110214075A (en) * 2016-12-18 2019-09-06 Csir公司 Material is preheated in increasing material manufacturing equipment
CN110834096A (en) * 2019-11-26 2020-02-25 湖北工业大学 Metal powder 3D printing apparatus
WO2020167576A1 (en) * 2019-02-12 2020-08-20 Essentium, Inc. Infrared heating of additive printed part
CN111590885A (en) * 2020-06-16 2020-08-28 哈尔滨自由智造科技开发有限公司 Desktop level 3D printing apparatus
CN111819064A (en) * 2018-04-30 2020-10-23 惠普发展公司，有限责任合伙企业 Build material heater with baffle
CN112139497A (en) * 2020-09-21 2020-12-29 大连理工大学 High-temperature integral preheating auxiliary additive manufacturing device and method
CN112222358A (en) * 2020-09-29 2021-01-15 北京机科国创轻量化科学研究院有限公司 3D prints forming device
CN112809398A (en) * 2020-08-18 2021-05-18 连灿鑫 Material increasing and decreasing combined machining center
CN113059118A (en) * 2021-03-05 2021-07-02 康硕(江西)智能制造有限公司 High accuracy wax matrix 3D printer
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CN115138876A (en) * 2021-03-30 2022-10-04 广东汉邦激光科技有限公司 Purified wind field generating device and additive manufacturing equipment
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CN110014652B (en) * 2019-05-14 2024-06-04 哈尔滨福沃德多维智能装备有限公司 Uniform high-temperature preheating structure and method for powder in closed cavity

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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
CN106563806A (en) * 2016-11-03 2017-04-19 西安交通大学 Electromagnetic induction heating type powder supplying and laying integrated system for powder bed additive manufacturing
CN106513677A (en) * 2016-11-28 2017-03-22 南通金源智能技术有限公司 Process monitoring system for laser precision forming technology and monitoring method thereof
CN106735199A (en) * 2016-11-28 2017-05-31 南通金源智能技术有限公司 For the PMS of laser accurate forming technique
US10661382B2 (en) 2016-12-07 2020-05-26 North University Of China SLM forming device for multiple metal powder materials
CN106493366A (en) * 2016-12-07 2017-03-15 中北大学 Various metals dusty material selective laser melting forming device
US11485083B2 (en) 2016-12-18 2022-11-01 Csir Preheating of material in an additive manufacturing apparatus
CN110214075B (en) * 2016-12-18 2022-08-23 Csir公司 Preheating material in an additive manufacturing apparatus
CN110214075A (en) * 2016-12-18 2019-09-06 Csir公司 Material is preheated in increasing material manufacturing equipment
US11446867B2 (en) 2017-02-24 2022-09-20 Essentium, Inc. Atmospheric plasma conduction pathway for the application of electromagnetic energy to 3D printed parts
CN106891614B (en) * 2017-02-28 2018-08-17 华中科技大学 A kind of curved surface printing real-time sintering curing device and method of laser
CN106891614A (en) * 2017-02-28 2017-06-27 华中科技大学 A kind of curved surface prints the real-time sintering curing apparatus and method of laser
CN106925784A (en) * 2017-04-14 2017-07-07 华南理工大学 A kind of 3D printing course monitoring method and device based on camera captured in real-time
CN108788143A (en) * 2017-04-28 2018-11-13 戴弗根特技术有限公司 Increasing material manufacturing control system
CN108788143B (en) * 2017-04-28 2022-09-20 戴弗根特技术有限公司 Additive manufacturing control system
CN106914618A (en) * 2017-05-03 2017-07-04 广东工业大学 A kind of laser sintered increasing material process equipment
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CN107187050A (en) * 2017-05-25 2017-09-22 安徽恒利增材制造科技有限公司 A kind of shaped platform of double feed cylinder 3d printers
CN107150442A (en) * 2017-05-29 2017-09-12 安徽科元三维技术有限公司 Power spreading device on rapid forming equipment
CN107214950B (en) * 2017-07-19 2018-08-07 广州恒尚科技有限公司 Automatically adjust 3D printer powdering amount devices and methods therefor
CN107214950A (en) * 2017-07-19 2017-09-29 广州恒尚科技有限公司 Automatically adjust 3D printer powdering amount devices and methods therefor
CN109420762A (en) * 2017-08-31 2019-03-05 上海微电子装备（集团）股份有限公司 A kind of 3D printing device and method
CN109420762B (en) * 2017-08-31 2021-05-25 上海微电子装备（集团）股份有限公司 3D printing device and method
WO2019114318A1 (en) * 2017-12-13 2019-06-20 广东科达洁能股份有限公司 Powder laying state detection method and device for 3d printer
CN108405859A (en) * 2018-04-25 2018-08-17 金华市盛志科技服务有限公司 A kind of multi link formula stepping power metallurgy equipment
CN111819064B (en) * 2018-04-30 2022-07-05 惠普发展公司，有限责任合伙企业 Build material heater with baffle
US11858215B2 (en) 2018-04-30 2024-01-02 Hewlett-Packard Development Company, L.P. Build material heaters with baffles
CN111819064A (en) * 2018-04-30 2020-10-23 惠普发展公司，有限责任合伙企业 Build material heater with baffle
CN109158597B (en) * 2018-08-20 2020-12-08 湖南华曙高科技有限责任公司 Powder laying quality detection method and device, readable storage medium and three-dimensional object manufacturing method
CN109158597A (en) * 2018-08-20 2019-01-08 湖南华曙高科技有限责任公司 Powdering quality detection method, equipment, readable storage medium storing program for executing and three-dimension object manufacturing method
CN109047761A (en) * 2018-08-24 2018-12-21 西安科技大学 A kind of metal increasing material manufacturing technique
CN109514856A (en) * 2018-10-30 2019-03-26 谢明仿 A kind of two-way double roller power spreading device of laser gain material materials being fabricated bucket type
CN109604598A (en) * 2019-01-09 2019-04-12 深圳光韵达光电科技股份有限公司 A kind of increase and decrease material combined-machining equipment
WO2020167576A1 (en) * 2019-02-12 2020-08-20 Essentium, Inc. Infrared heating of additive printed part
US11987001B2 (en) 2019-02-12 2024-05-21 NEXA3D Inc. Machine for producing an additive printed part
CN110014652B (en) * 2019-05-14 2024-06-04 哈尔滨福沃德多维智能装备有限公司 Uniform high-temperature preheating structure and method for powder in closed cavity
CN110014652A (en) * 2019-05-14 2019-07-16 哈尔滨福沃德多维智能装备有限公司 Powder uniform high temperature preheating structure and method in a kind of closed cavity
CN110834096A (en) * 2019-11-26 2020-02-25 湖北工业大学 Metal powder 3D printing apparatus
CN111590885A (en) * 2020-06-16 2020-08-28 哈尔滨自由智造科技开发有限公司 Desktop level 3D printing apparatus
CN112809398A (en) * 2020-08-18 2021-05-18 连灿鑫 Material increasing and decreasing combined machining center
CN112139497B (en) * 2020-09-21 2021-12-17 大连理工大学 High-temperature integral preheating auxiliary additive manufacturing device and method
CN112139497A (en) * 2020-09-21 2020-12-29 大连理工大学 High-temperature integral preheating auxiliary additive manufacturing device and method
CN112222358B (en) * 2020-09-29 2022-05-17 北京机科国创轻量化科学研究院有限公司 3D prints forming device
CN112222358A (en) * 2020-09-29 2021-01-15 北京机科国创轻量化科学研究院有限公司 3D prints forming device
CN113059118A (en) * 2021-03-05 2021-07-02 康硕(江西)智能制造有限公司 High accuracy wax matrix 3D printer
CN115138876A (en) * 2021-03-30 2022-10-04 广东汉邦激光科技有限公司 Purified wind field generating device and additive manufacturing equipment
CN115138876B (en) * 2021-03-30 2024-03-19 广东汉邦激光科技有限公司 Purifying wind field generating device and additive manufacturing equipment
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CN115533128A (en) * 2022-10-28 2022-12-30 哈尔滨理工大学 SLM metal 3D printer based on powder metallurgy

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