CN206912249U - Metal dust 3D laser formation power spreading devices - Google Patents
Metal dust 3D laser formation power spreading devices Download PDFInfo
- Publication number
- CN206912249U CN206912249U CN201720908088.6U CN201720908088U CN206912249U CN 206912249 U CN206912249 U CN 206912249U CN 201720908088 U CN201720908088 U CN 201720908088U CN 206912249 U CN206912249 U CN 206912249U
- Authority
- CN
- China
- Prior art keywords
- powder
- outlet device
- metal dust
- road
- power spreading
- Prior art date
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of metal dust 3D laser formation power spreading devices, powder outlet device inner upper is dress powder tank, fill powder tank bottom surface and certain angle is tilted to opening, powder road is tilted below dress powder tank with one by opening to be connected, tilt and cylindrical hole is provided with the powder outlet device at the powder road back side, the size of cylindrical hole is less than the size for tilting and radian being opened above powder road；Meal outlet below powder road is tilted until the bottom of powder outlet device；Tilt powder road bottom opening be connected by screw size it is different go out powder plate, go out powder plate and be fixed by screws on powder outlet device；Square slotted eye is also set up on the powder outlet device；Stepper motor is fixed by screws in the position of the square slotted eye of powder outlet device；Stepper motor is arranged on the position of cylindrical hole by gear and powder feeding axis connection, powder feeding axle.Solve the problems, such as that formed precision is low in the prior art, powder using efficiency is low, and avoid it is conventional need more adjuvant powders, it is size-constrained the problem of.
Description
Technical field
The utility model belongs to 3D laser forming technologies field, more particularly to a kind of metal dust 3D laser formation powderings
Device.
Background technology
Powder using efficiency is not high in existing synchronous powder feeding system laser gain material manufacturing process, and metal powdering laser 3D into
Auxiliary support powder is more during type, and shaping workpiece size is easily limited by powdering casing size；So that metal dust 3D swashs
Stereo lithography large-scale application is restricted.
Specifically, synchronous powder feeding system, it is to utilize airborne formula powder feeder, laser cladding powder is directly conveyed into hot spot,
As hot spot is in the movement of workpiece surface, formation cladding layer.But it is big to utilize gas powder feeding powder to waste, and boundary shape essence
Degree is whard to control, that is, causes that powder using efficiency is not high, and formed precision is relatively low.
Utility model content
The purpose of the utility model embodiment is to provide a kind of metal dust 3D laser formation power spreading devices solve existing
There is the problem of formed precision is low, powder using efficiency is low in technology, and avoid the conventional more adjuvant powders, size-constrained of needing
Problem.
The utility model is the technical scheme adopted is that metal dust 3D laser formation power spreading devices, including powder outlet device,
Powder outlet device inner upper is dress powder tank, and dress powder tank bottom surface tilts certain angle to opening, passes through opening below dress powder tank
Powder road is tilted with one to be connected, tilts and cylindrical hole is provided with the powder outlet device at the powder road back side, and the size of cylindrical hole, which is less than, to be tilted
The size of radian is opened above powder road；Meal outlet below powder road is tilted until the bottom of powder outlet device；Powder road bottom is tilted to open
Mouth be connected by screw size it is different go out powder plate, go out powder plate and be fixed by screws on powder outlet device；It is described go out powder dress
Put and also set up square slotted eye；Stepper motor is fixed by screws in the position of the square slotted eye of powder outlet device；Stepper motor leads to
Gear and powder feeding axis connection are crossed, powder feeding axle is arranged on the position of cylindrical hole.
Further, it is provided with array slotted eye on the powder feeding axle.
Further, the position of cylindrical hole is provided with two down through bolted semicircle on the powder outlet device
Supporting plate, semicircle supporting plate are used for the position for fixing and adjusting powder feeding axle so that the top half of powder feeding shaft compression cylindrical hole.
Further, the meal outlet tilted below powder road is 0.3mm-1.2mm single circular hole, array circular hole or
Different size slotted eyes.
Further, rosin alcohol nozzle is bolted to connection in the side of the powder outlet device nearer from meal outlet,
And its injection flow direction and meal outlet powder feeding direction can be made to have friendship in the range of 4-8 height during the installation of rosin alcohol nozzle
Point.
Further, the rosin alcohol nozzle is micro-injection nozzle or atomizer.
Further, the atomizer, the flow for being sent into liquid is controlled using flow pump.
Further, the micro-injection nozzle controls the flow of injection using digital control system control nozzle opening and closing frequency.
The beneficial effects of the utility model are by powder sending quantity controllable precise and the powder feeding mechanism of flour opening reconfigurable and one
The power spreading device that the rosin alcohol binding agent Nozzle combination of individual flow controllable precise forms, and it is equipped with corresponding technique so that gold
Belong to powder using efficiency more than 96%, and the formed precision having had, avoid laser synchronization powder feeding 3D moulding process powder profit
With the problem of rate is low, formed precision is not high；It also avoid conventional casing powdering laser 3D moulding process simultaneously needs more to rise
The adjuvant powders of supporting role, size are limited by the problem of powdering casing size, in laser remanufacturing and laser gain material manufacture neck
There are important application value and huge social benefit in domain.Simple in construction, easy to operate, powder conveying continuous uniform and border shape
Shape precision is controllable.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the sectional view of powder outlet device in the utility model embodiment.
Fig. 2 is the stereogram of powder outlet device in the utility model embodiment.
Fig. 3 is the axle sectional side view of powder outlet device in the utility model embodiment.
Fig. 4 is the front view of metal dust 3D laser formation power spreading devices in the utility model embodiment.
Fig. 5 is the top view of metal dust 3D laser formation power spreading devices in the utility model embodiment.
Fig. 6 is the structural representation of powder feeding axle in the utility model embodiment.
Fig. 7 is the structural representation of semicircle supporting plate in the utility model embodiment.
Fig. 8 is the metal powder laser katatectic strata picture that the utility model embodiment obtains.
In figure, 1. dress powder tanks, 2. cylindrical holes, 3. tilt powder road, and 4. screws, 5. go out powder plate, and 6. square slotted eyes, 7. go out powder
Device, 8. gears, 9. rosin alcohol nozzles, 10. powder feeding axles, 11. stepper motors, 12. semicircle supporting plates, 13. array slotted eyes.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Metal dust 3D laser formation power spreading devices, structure as shown in figs. 1-7, including powder outlet device 7, powder outlet device 7
Structure is as Figure 1-3；The inner upper of powder outlet device 7 is dress powder tank 1, and dress powder tank 1 is that bottom surface tilts certain angle to opening
Degree, the lower section of dress powder tank 1 tilt powder road 3 with one by opening and are connected, tilt and be provided with circle on the powder outlet device 7 at the back side of powder road 3
Post holes 2, the size of cylindrical hole 2, which is less than, tilts the size that radian is opened in the top of powder road 3；The lower section meal outlet of powder road 3 is tilted until going out
The bottom of powder device 7；Tilt at the lower opening of powder road 3 by the size for connection of screw 4 it is different go out powder plate 5, in powder outlet device 7
On also set up square slotted eye 6.
As illustrated in figures 4-5, stepper motor 11 is fixed by screws in the position of the square slotted eye 6 of powder outlet device 7；Stepping electricity
Machine 11 is connected by gear 8 with powder feeding axle 10, and powder feeding axle 10 is arranged on the position of cylindrical hole 2；As shown in Fig. 4,7, going out powder dress
The position for putting cylindrical hole 2 on 7 is provided with two down through bolted semicircle supporting plate 12, and semicircle supporting plate 12 is for solid
Fixed and regulation powder feeding axle 10 position so that powder feeding axle 10 compresses the top half of cylindrical hole 2；Rosin alcohol nozzle 9 passes through spiral shell
Bolt is fixedly connected on the side of the powder outlet device 7 nearer from meal outlet.And during the installation of rosin alcohol nozzle its can be made to spray liquid
There is intersection point in direction and meal outlet powder feeding direction in the range of 4-8 height.
As shown in fig. 6, array slotted eye 13 is provided with powder feeding axle 10.
The meal outlet for tilting the lower section of powder road 3 can be 0.3mm-1.2mm single circular hole, array circular hole, different size groove
Hole, for controlling the boundary shape precision of powdering.
There is powder delivery groove (array slotted eye 13) a series of and with one fixed width and depth on powder feeding axle 10, by by stepping
The drive device that motor 11 and gear 8 form drives powder feeding axle 10 to rotate and control rotating speed, realizes that powder uniformly continuous is supplied；Go out
The meal outlet shape of powder device 7 can be adjusted by changing the different powder plates that goes out.The width of notch, depth on powder feeding axle 10
Degree and quantity, shape can be adjusted by technological requirement.
, will be of the present utility model by the rotating speed of step motor control powder feeding axle 10 and the walking sweep speed of power spreading device
Power spreading device is fixed in the robot, and the threedimensional model established is cut into slices using Slice Software, the number of slices that will be obtained
According to manipulator control system is imported, manipulator is walked with power spreading device at the position of required shaping and scan.It can make containing pine
The metal dust coating thickness of cordiale essence binding agent be 0.1mm-0.8mm it is adjustable so as to reach control powder sending quantity purpose.
Rosin alcohol nozzle 9 is micro-injection nozzle or atomizer.Atomizer, it is molded suitable for large-area laser；It is micro-
Injection nozzle, it is molded suitable for high accuracy, small area.Controlled when rosin alcohol nozzle 9 is using atomizer using flow pump
Be sent into liquid flow, when rosin alcohol nozzle 9 using micro-injection nozzle when using digital control system control nozzle be opened and closed frequency come
Control the flow of injection.
Metal dust 3D laser formation methods, are specifically followed the steps below：
Step 1, the preparation of metal dust initialization layer
Choose after metal dust crosses 150 mesh sieves and dry, ensure that metal dust has good mobile performance；Configure rosin wine
Smart solution is as binding agent；
Metal dust 3D laser formations power spreading device is fixed in the robot, using three-dimensional software design elements model,
Rapid shaping form is exported, hierarchy slicing software design patterns parameter is imported and is cut into slices, slice of data is obtained, then by slice of data
Import the control system of manipulator so that manipulator is with metal dust 3D laser formations power spreading device at the position of required shaping
Walking scanning, while powder feeding axle 10 and rosin alcohol nozzle 9 are started, the powder of meal outlet outflow is sprayed using rosin alcohol nozzle 9
The rosin alcohol binding agent gone out is needing forming area surface to meet, and it is about that 0.1mm-0.8mm contains rosin wine to form a layer thickness
The metal dust initialization layer of essence；After the completion of the area planar surface sweeping that need to be entirely molded, the number of slices that is obtained using data modeling
It is 10w/mm according to controlling digital control system to drive power density2-30w/mm2, sweep speed 7mm/s-15mm/s light beam is to containing pine
The metal dust initialization layer scanning of cordiale essence is heated, and makes alcohol volatilize to form rosin as Binder Phase and bond by force with certain completely
The metal dust initialization layer of degree；
Step 2 prepares metal powder laser and melts lamination
The slice of data control digital control system obtained using data modeling drives the laser beam of high-energy-density to one
Determine the metal dust initialization layer scanning fusing sintering of adhesion strength, form layer of metal powder laser and melt lamination, wherein laser beam
Power density 200w/mm2-300w/mm2, sweep speed 5mm/s-7mm/s；Using digital control system drive metal dust 3D laser into
Type power spreading device rises the height that a metal powder laser melts lamination, and the process of repeated melting sintering prepares required metal
Molding part.What is finally obtained is as shown in Figure 8.
Wherein, rosin alcohol binding agent plays bonding and fluxing effect, mass concentration 1%-6%；
The thickness of metal dust initialization layer is in 0.1mm-0.8mm；The walking that its thickness passes through powder feed rate and power spreading device
Sweep speed coordinates control.
There are two kinds of metal dust initialization layer boundary shape control methods, a kind of is the slice of data obtained using data modeling
Control digital control system drives power spreading device to start powder feeding mechanism and atomizer while the region for needing to be molded is scanned,
The powder of meal outlet outflow and the rosin alcohol binding agent sprayed using atomizer are needing forming area surface to meet, and form one
Thickness degree contains the metal dust initialization layer of rosin alcohol, the boundary shape precision of metal dust initialization layer for 0.1mm-0.8mm
Controlled by the cooperation of powder feeding mouth size and powder feed rate, such a control method can be used for large area powdering, boundary shape requirement
Not high application field；While another kind is that the region for driving power spreading device to be molded in needs using digital control system is scanned
Start powder feeding mechanism and micro-injection nozzle, the powder of powder feeding mouth outflow and the rosin alcohol binding agent sprayed using micro-injection nozzle
Forming area surface is being needed to meet, it is the metal dust initialization layer that 0.1mm-0.8 contains rosin alcohol to form a layer thickness, is utilized
The shape of microprojection systems control rosin alcohol binding agent spraying area controls the purpose of powdering boundary shape precision to reach, this
Kind control method can be applied to the application field high to border form accuracy requirement.
The utility model is using simple efficient mechanical device powder feeding, the powder and utilize micro-injection nozzle that powder feeding mouth flows out
Or the rosin alcohol binding agent that atomizer sprays is needing forming area surface to meet, it is about 0.1mm- to form a layer thickness
0.8mm contains the metal dust initialization layer of rosin alcohol binding agent；The boundary shape precision and thickness of metal dust initialization layer are led to
The cooperation for crossing the width, depth and quantity of powder feeding mouth-shaped size and powder feed rate and the notch on powder feeding axle controls.And match somebody with somebody
With corresponding technique, metal dust utilization rate is may be such that more than 96%, and the formed precision having had, avoid laser synchronization
The problem of powder feeding 3D moulding process powder using efficiencies are low, formed precision is not high；It it also avoid conventional casing powdering laser 3D simultaneously
The problem of moulding process needs the more adjuvant powders to play a supportive role, size to be limited by powdering casing size, in laser again
Manufacture and laser gain material manufacturing field have important application value and huge social benefit.
Embodiment 1：
Step 1, the preparation of metal dust initialization layer.
Data modeling：Using three-dimensional software design elements model, rapid shaping form is exported, hierarchy slicing software is imported and sets
Put parameter to be cut into slices, obtain slice of data；Choose after metal dust crosses 150 mesh sieves and dry, ensure that powder has good stream
Dynamic performance；It is 1% that rosin alcoholic solution, which is configured, as binding agent mass concentration；Design powder sending quantity controllable precise and flour opening shape
The power spreading device that the rosin alcohol nozzle 9 of adjustable powder feeding mechanism and flow controllable precise forms；Powder loads dress after drying
Divide groove, the slice of data control digital control system obtained using data modeling drives above-mentioned power spreading device to enter in the region for needing to be molded
Powder feeding mechanism and rosin alcohol binding agent nozzle are started while row scanning, the powder and sprayed using atomizer that powder feeding mouth flows out
The rosin alcohol binding agent gone out is needing forming area surface to meet, and it is about the gold that 0.3mm contains rosin alcohol to form a layer thickness
Belong to powder initialization layer；After the completion of the area planar surface sweeping that need to be entirely molded, the slice of data obtained using data modeling is controlled
It is 10w/mm that digital control system, which drives power density,2, sweep speed 15mm/s light beam is pre- to the metal dust containing rosin alcohol
Layer scanning heating is put, makes alcohol volatilize to form rosin as Binder Phase and have the metal dust of certain adhesion strength preset completely
Layer.
Step 2 prepares metal powder laser and melts lamination
The slice of data control digital control system obtained using data modeling drives the laser beam of high-energy-density to above-mentioned tool
There is the metal dust initialization layer scanning fusing sintering of certain adhesion strength, form layer of metal powder laser and melt lamination, wherein swashing
Beam power density 200w/mm2, sweep speed 7mm/s；Drive power spreading device to rise a metal dust using digital control system to swash
Light melts the height of lamination, repeats said process and prepares required metal forming part.
Embodiment 2
Selected rosin alcohol quality concentration is 6%；The slice of data obtained in step 1 using data modeling controls numerical control system
The dynamic power density of regiment commander is 30w/mm2, sweep speed 7mm/s light beam is to the metal dust initialization layer scanning containing rosin alcohol
Heat, laser beam power density 300w/mm in step 22, sweep speed 5mm/s；Other processes are the same as embodiment 1.
Embodiment 3
Selected rosin alcohol quality concentration is 4%；The slice of data obtained in step 1 using data modeling controls numerical control system
The dynamic power density of regiment commander is 20w/mm2, sweep speed 10mm/s light beam sweeps to the metal dust initialization layer containing rosin alcohol
Retouch heating, laser beam power density 250w/mm in step 22, sweep speed 6mm/s；Other processes are the same as embodiment 1.
Each embodiment in this specification is described by the way of related, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.It is real especially for system
For applying example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring to embodiment of the method
Part explanation.
Preferred embodiment of the present utility model is the foregoing is only, is not intended to limit protection model of the present utility model
Enclose.All made within spirit of the present utility model and principle any modification, equivalent substitution and improvements etc., are all contained in this reality
With in new protection domain.
Claims (8)
1. metal dust 3D laser formation power spreading devices, it is characterised in that including powder outlet device (7), on powder outlet device (7) inside
Side is dress powder tank (1), and dress powder tank (1) bottom surface tilts certain angle to opening, passes through opening and one below dress powder tank (1)
Powder road (3) connection is tilted, tilts and is provided with cylindrical hole (2), the size of cylindrical hole (2) on the powder outlet device (7) at powder road (3) back side
Less than the size for tilting opening radian above powder road (3)；Meal outlet below powder road (3) is tilted until the bottom of powder outlet device (7)；
Tilt powder road (3) bottom opening by screw (4) size for connection it is different go out powder plate (5), go out powder plate (5) and pass through screw
(4) it is fixed on powder outlet device (7)；Square slotted eye (6) is also set up on the powder outlet device (7)；Stepper motor (11) passes through spiral shell
Nail is fixed on the position of the square slotted eye (6) of powder outlet device (7)；Stepper motor (11) is connected by gear (8) and powder feeding axle (10)
Connect, powder feeding axle (10) is arranged on the position of cylindrical hole (2).
2. metal dust 3D laser formation power spreading devices according to claim 1, it is characterised in that the powder feeding axle (10)
On be provided with array slotted eye (13).
3. metal dust 3D laser formation power spreading devices according to claim 1, it is characterised in that the powder outlet device
(7) position of cylindrical hole (2) is provided with two down through bolted semicircle supporting plate (12), semicircle supporting plate (12) on
For fixing and adjusting the position of powder feeding axle (10) so that powder feeding axle (10) compresses the top half of cylindrical hole (2).
4. metal dust 3D laser formation power spreading devices according to claim 1, it is characterised in that the inclination powder road
(3) single circular hole, array circular hole or the different size slotted eyes that the meal outlet below is 0.3mm-1.2mm.
5. metal dust 3D laser formation power spreading devices according to claim 1, it is characterised in that rosin alcohol nozzle
(9) it is bolted to connection in the side of the powder outlet device (7) nearer from meal outlet, and rosin alcohol nozzle (9) can make it
There is intersection point in injection flow direction and meal outlet powder feeding direction in the range of 4-8 height.
6. metal dust 3D laser formation power spreading devices according to claim 5, it is characterised in that the rosin alcohol spray
Mouth (9) is micro-injection nozzle or atomizer.
7. metal dust 3D laser formation power spreading devices according to claim 6, it is characterised in that the atomizer,
The flow for being sent into liquid is controlled using flow pump.
8. metal dust 3D laser formation power spreading devices according to claim 6, it is characterised in that the micro-injection nozzle
The flow of injection is controlled using digital control system control nozzle opening and closing frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720908088.6U CN206912249U (en) | 2017-07-25 | 2017-07-25 | Metal dust 3D laser formation power spreading devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720908088.6U CN206912249U (en) | 2017-07-25 | 2017-07-25 | Metal dust 3D laser formation power spreading devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206912249U true CN206912249U (en) | 2018-01-23 |
Family
ID=61348281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720908088.6U Active CN206912249U (en) | 2017-07-25 | 2017-07-25 | Metal dust 3D laser formation power spreading devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206912249U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225245A (en) * | 2017-07-25 | 2017-10-03 | 南华大学 | Metal dust 3D laser formations power spreading device and forming method |
| CN110961623A (en) * | 2018-09-30 | 2020-04-07 | 天津大学 | Powder feeding device of metal 3D printer |
| CN111014676A (en) * | 2019-12-31 | 2020-04-17 | 西安赛隆金属材料有限责任公司 | Powder feeding device |
-
2017
- 2017-07-25 CN CN201720908088.6U patent/CN206912249U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107225245A (en) * | 2017-07-25 | 2017-10-03 | 南华大学 | Metal dust 3D laser formations power spreading device and forming method |
| CN107225245B (en) * | 2017-07-25 | 2023-02-10 | 南华大学 | Metal powder 3D laser forming powder laying device and forming method |
| CN110961623A (en) * | 2018-09-30 | 2020-04-07 | 天津大学 | Powder feeding device of metal 3D printer |
| CN111014676A (en) * | 2019-12-31 | 2020-04-17 | 西安赛隆金属材料有限责任公司 | Powder feeding device |
| CN111014676B (en) * | 2019-12-31 | 2023-10-03 | 西安赛隆金属材料有限责任公司 | Powder feeding device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206912249U (en) | Metal dust 3D laser formation power spreading devices | |
| AU2019201593C1 (en) | 3D printing using spiral buildup | |
| US20100323301A1 (en) | Method and apparatus for making three-dimensional parts | |
| CN106077639A (en) | A kind of selective laser fusing former and manufacturing process thereof | |
| CN107553899B (en) | Recoating unit, recoating method, device and method for additive manufacturing of three-dimensional objects | |
| US10150247B2 (en) | 3D printing using spiral buildup and high viscosity build materials | |
| CN103978446B (en) | A kind of rapid molding device of abrasive material regular array grinding tool and method | |
| JP2800937B2 (en) | Equipment for manufacturing parts by selective sintering | |
| JP5861117B2 (en) | Manufacturing method and manufacturing apparatus for three-dimensional shaped object | |
| JP2021107150A (en) | Three-dimensional modeling method and device for objects with high resolution background | |
| CN106513680A (en) | Double-laser four-station rotary plate type selective laser melting forming device and method | |
| CN107466258A (en) | For the method by thermal jet manufacture component and the equipment for manufacturing component with thermal jet device | |
| CN107470624A (en) | The increasing material manufacturing method and apparatus of more silk material function gradient structures | |
| KR101906553B1 (en) | 3D laser printing apparatus having powder supplying method using wiper and roller structure | |
| CN107225245A (en) | Metal dust 3D laser formations power spreading device and forming method | |
| CN104785786A (en) | Slurry feeding type metal part material increase manufacturing method and device | |
| EP3856492B1 (en) | Method and system for additive manufacturing with a sacrificial structure for easy removal | |
| EP3735346A1 (en) | Systems and methods for additive manufacturing | |
| CN106493368A (en) | A kind of selective laser fusing high efficiency forming device and method | |
| CN106182772A (en) | Multiple material rapid prototyping shaped device and method | |
| CN105365219A (en) | 3d printer and printing method thereof | |
| KR20180103333A (en) | 3D printing apparatus using rotating roller inside powder supplyng hopper | |
| EP2263861A1 (en) | Method and apparatus for making three-dimensional parts | |
| KR102148637B1 (en) | Pellet Injection Method Of Pellet 3D printer And Pellet Transfer System | |
| CN107008903B (en) | Cuboid 3D printing equipment and 3D printer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |