CN205148936U - Spread powder device and vibration material disk device - Google Patents
Spread powder device and vibration material disk device Download PDFInfo
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- CN205148936U CN205148936U CN201520971371.4U CN201520971371U CN205148936U CN 205148936 U CN205148936 U CN 205148936U CN 201520971371 U CN201520971371 U CN 201520971371U CN 205148936 U CN205148936 U CN 205148936U
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Abstract
The utility model discloses a spread the powder device, include: spread the powder platform, place and wait the powder material that lays, the top of spreading the powder platform is located to the scraper, lays powder material, elevating system, its rigid coupling the scraper to it goes up and down along vertical direction to drive the scraper, horizontal migration mechanism connects elevating system to it removes along the horizontal direction to drive elevating system, the controller is connected respectively in elevating system and horizontal migration mechanism. Through the adjustable scraper lower extreme of elevating system and horizontal migration mechanism and spread the clearance between the powder platform, reduce the upper story powder material who omits on spreading the powder platform, avoid leading to the fact the influence to the powder material's of one deck ratio down, the utility model provides a vibration material disk device adopts foretell shop powder device, can designate the powder material's of each layer ratio, can produce the entity part that has multiple material composition.
Description
Technical field
The utility model relates to 3D printing technique field, particularly relates to a kind of power spreading device and increasing material manufacturing installation.
Background technology
Increasing material manufacturing technology (3D printing) is the manufacturing technology that a kind of material by fusing more than one thin layer continuously builds entity component.It is the one increasing material manufacturing technology route that powder bed increases material manufacture, its basic processing step is as follows: powder supplies with pave system by dusty material at workbench upper berth generate thin layer, the beam (laser or electron beam) of high-energy-density scans a cross section of entity component on powder bed; Afterwards, workbench declines the distance of a layer thickness, at the powder that workbench upper berth one deck is new, and the next cross section of ray scanning entity component; Repeat above step, until this entity component manufacture completes.
Existing powder bed increases material manufacturing equipment major part and a kind of dusty material can only be utilized to manufacture the single part of composition, and when needing two or more different dusty material to manufacture the part of non-single component, the said equipment is also inapplicable.
And existing powder bed increases the power spreading device of material manufacturing equipment, it is fixed for the gap spread between the scraper of powder and paving powder platform, unadjustable, when scraper carries out paving powder, amount of powder particle spills from the gap between scraper and paving powder platform, omits on paving powder platform.And for the requirement adopting various powders material mixture ratio to carry out increasing material manufacture, the dusty material omitted on paving powder platform can be mixed into the dusty material of lower one deck, cause the dusty material proportioning of lower one deck to occur relatively large deviation, cause final entity component not reach manufacture requirements.
Utility model content
The purpose of this utility model is to provide a kind of power spreading device, the gap adjustable between its scraper lower end and paving powder platform, can reduce the last layer dusty material omitted on paving powder platform, avoid the proportioning of the dusty material to lower one deck to impact.
Another object of the present utility model is that providing a kind of increases material manufacturing installation, adopts above-mentioned power spreading device, can specify, can produce the entity component with multiple material composition to the proportioning of the dusty material of every one deck.
For reaching this object, the utility model by the following technical solutions:
A kind of power spreading device, comprising:
Paving powder platform, places dusty material to be laid;
Scraper, is located at the top of paving powder platform, lays described dusty material;
Elevating mechanism, its affixed described scraper, and drive scraper to be vertically elevated;
Horizontal mobile mechanism, connects described elevating mechanism, and drives elevating mechanism to move in the horizontal direction;
Controller, is connected to elevating mechanism and horizontal mobile mechanism.
As preferably, described elevating mechanism comprises vertical rail, is slidably arranged in the slide block on vertical rail, and output is fixed in slide block and drives the ultrasound electric machine of skid, and described ultrasound electric machine is connected to described controller, and scraper is installed on described slide block.
As preferably, described horizontal mobile mechanism comprises horizontal rail and drive motors, described vertical rail is slidably located in horizontal rail, described drive motors is connected with driving member, one end of vertical rail is connected to described driving member, and described drive motors drives vertical rail to slide along horizontal rail by described driving member.
As preferably, described driving member comprises Rack and gear transmission structure or screw connecting structure or Timing Belt.
As preferred technical scheme, described scraper comprises some to overlap and in the steel disc of comb shape, and described steel disc is obliquely installed.
As preferably, between adjacent two described steel discs, the comb gear of one of them steel disc is located at the comb gap place of another one steel disc.
Above-mentioned power spreading device of the present utility model is by arranging elevating mechanism, scraper can be moved up and down relative to paving powder platform, and then the gap between adjustment scraper lower end and paving powder platform, reduce the last layer dusty material omitted on paving powder platform, avoid the proportioning of the dusty material to lower one deck to impact; By arranging horizontal mobile mechanism, after dusty material has been laid by scraper, elevating mechanism oppositely can be moved to original position together with scraper, to treat paving powder next time, scraper is avoided to come in contact with the dusty material (referred to as powder bed) laid, cause powder bed damaged, affect follow-up increasing material manufacture.
The utility model also provides a kind of and increases material manufacturing installation, comprises above-mentioned power spreading device.
Further, increasing material manufacturing installation of the present utility model also comprises:
Working chamber, described power spreading device is positioned at working chamber;
At least two powder casees, place the described dusty material of identical/heterogeneity respectively;
Powder receiving box, is movably located at the below of powder case, receives and the dusty material of mixed powder case conveying, and is placed on by mixed dusty material on the paving powder platform of described power spreading device;
Formation cylinder, be arranged in working chamber, it comprises cylinder body and to be located in cylinder body and the piston moved up and down, and what described cylinder upper end face was concordant and airtight is connected to described paving powder platform, and the dusty material on paving powder platform is laid in described top land by described power spreading device;
Ray generating device, is arranged on the top of working chamber, and is positioned at the top of formation cylinder.
As preferably, described powder receiving box is provided with LOAD CELLS.
As preferably, the ray that described ray generating device produces is laser or electron beam, and when described ray is electron beam, described working chamber is vacuum state.
Above-mentioned increasing material manufacturing installation of the present utility model, by arranging above-mentioned power spreading device, can specify the proportioning of the dusty material of every one deck, producing the entity component with multiple material composition.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model power spreading device;
Fig. 2 is the structural representation that the utility model increases material manufacturing installation;
Fig. 3 is that the utility model increases material manufacturing installation power spreading device and formation cylinder with the use of schematic diagram;
Fig. 4-7 is that the utility model power spreading device completes once paving powder status of processes schematic diagram.
In figure:
1, power spreading device; 2, working chamber; 3, powder case; 4, powder receiving box; 5, formation cylinder; 6, ray generating device; 11, powder platform is spread; 12, scraper; 13, elevating mechanism; 14, horizontal mobile mechanism; 51, cylinder body; 52, piston; 131, vertical rail; 132, slide block; 141, horizontal rail; 101, powder thin layer; 102, object layer.
Detailed description of the invention
The technical solution of the utility model is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
It should be noted that: in description of the present utility model, it will be appreciated that, term " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
Concrete, the utility model provides a kind of power spreading device, and as Fig. 1, this power spreading device comprises paving powder platform 11, scraper 12, elevating mechanism 13, horizontal mobile mechanism 14, wherein:
Paving powder platform 11, for placing dusty material to be laid, paving powder platform 11 can be dull and stereotyped, also can be that other have the platform structure in horizontal operation face, only need ensure that working face has enough little flatness.
Scraper 12, is positioned at the top of paving powder platform 11, for laying the dusty material on powder platform 11; Concrete, scraper 12 comprises some overlapping and steel disc in comb shape, and above-mentioned steel disc is obliquely installed.Steel disc is set to comb structure, and the comb on it can bear certain distortion.And steel disc is obliquely installed, be because have poly-ball, protruding phenomenon through often after dusty material fusing, it is higher than paving powder plane, and scraper 12 its steel disc when spreading powder needs to scrape poly-ball, projection, and now steel disc easily produces distortion.And steel disc is obliquely installed, stress during steel disc distortion can be reduced, avoid steel disc permanent deformation and damage, improve the service life of steel disc.
In the present embodiment, the preferred certain distance that staggered by adjacent two steel discs is arranged, and make the comb of one of them steel disc keep off the comb gap place being located at another one steel disc, and then when carrying out laying dusty material, can guarantee that dusty material can not spill from the comb gap of steel disc and be retained in a large number on paving powder platform 11.
In the present embodiment, steel disc can be set to acute angle with the angle of inclination of paving powder platform 11, preferred between 50-80 degree, and then can ensure that the resistance of the comb of steel disc when spreading powder is less, be convenient to lay dusty material, when also can prevent comb from running into barrier, stress is too concentrated and is produced deformation or damage simultaneously.
Elevating mechanism 13, for driving scraper 12 to be elevated, concrete, scraper 12 is installed on elevating mechanism 13, and is vertically elevated by its drive, to regulate the gap between scraper 12 lower end and paving powder platform 11;
Concrete, elevating mechanism 13 comprises vertical rail 131, vertical rail 131 slides and is provided with slide block 132, scraper 12 is installed on slide block 132, and the distance between slide block 132 lower end to paving powder platform 11 is greater than the distance between scraper 12 lower end to paving powder platform 11, this slide block 132 is connected with ultrasound electric machine (not shown), namely the output of ultrasound electric machine is fixedly connected with slide block 132, and slide block 132 can be driven to slide along vertical rail 131, in the present embodiment, ultrasound electric machine directly can select linear ultrasonic motor, band movable slider 132 moves up and down, scraper 12 moves with the movement of slide block 132, achieve the adjustment in the gap between scraper 12 lower end and paving powder platform 11.Certain the present embodiment is not limited only to the drive source of ultrasound electric machine as elevating mechanism 13, also the mode of servomotor or stepper motor driven gear-rack-driving structure or screw connecting structure or Timing Belt can be adopted to move up and down to drive scraper 12, but it should be noted that, when carrying out scraper 12 and moving up and down, need that there is enough amount trimmed, because when carrying out the gap between scraper 12 lower end and paving powder platform 11 and adjusting, scraper 12 amount of moving up and down is very little, concrete adjustment magnitude should at micron level, therefore, the servomotor needing to select resolution ratio higher or stepper motor.Preferably ultrasound electric machine is adopted in the present embodiment.
When carrying out paving powder, powder particle inevitably spills from the gap between scraper 12 lower end and paving powder platform 11, omits on paving powder platform 11.And every layer being adopted to the manufacture of the entity component of the dusty material of heterogeneity, the dusty material of omission can be mixed into the dusty material of lower one deck, causes between the dusty material proportioning of lower one deck and preset value and occurs relatively large deviation.Now, by Driven by Ultrasonic Motors slide block 132 slight moving up and down on vertical rail 131, make servo-actuated scraper 12 adjust to optimum position, and then ensure that the dusty material spilt from the gap between scraper 12 lower end and paving powder platform 11 is minimum.In the present embodiment, universal law is: dusty material particle diameter is larger, and the gap between scraper 12 lower end and paving powder platform 11 is larger, and contact between the two should be got over " pine "; Dusty material particle diameter is less, and the gap between scraper 12 lower end and paving powder platform 11 is less, and contact between the two should be got over " tightly ".
The elevating mechanism 13 of the present embodiment also spreads the playback after powder for scraper 12, concrete, after scraper 12 completes paving powder, needs its reposition, to carry out the paving powder of lower one deck.When returning, due to scraper 12 be heeling condition and with powder bed surface contact, when counter motion, if directly level returns, the comb of scraper 12 is easily stuck in the high spot of powder bed, cause powder bed large area deformation and damage, therefore needing scraper 12 to be risen certain distance by elevating mechanism 13, avoid scraper 12 and the powder bed surface contact laid.
And during scraper 12 counter motion, it does not bear paving powder task, is lifted by scraper 12 and is conducive to its fast return yet, save time.
Playback and the paving powder of the present embodiment scraper 12 are realized by horizontal mobile mechanism 14, concrete, this horizontal mobile mechanism 14, comprise horizontal rail 141 and drive motors (not shown), the vertical rail 131 of elevating mechanism 13 is slidably located in horizontal rail 141, drive motors is connected with driving member, and one end of vertical rail 131 is connected to driving member, and drive motors drives vertical rail 131 to slide along horizontal rail 141 by driving member.When scraper 12 carries out paving powder, drive motors drives vertical rail 131 to move along horizontal rail 141 to paving powder direction, when scraper 12 spread powder complete after playback time, first to be risen by scraper 12 certain distance by elevating mechanism 13, drive vertical rail 131 to slide along horizontal rail 141 to initial position by drive motors more subsequently, decline certain distance subsequently in vertical direction, this distance is identical with climb before, that is, initial position got back to by scraper 12, to carry out the paving powder of lower one deck.
Above-mentioned drive motors can be servomotor or stepper motor, driving member can be Rack and gear transmission structure or screw connecting structure or Timing Belt, when driving member is gear-tooth bar structure, one end of vertical rail 131 is fixed on tooth bar, by drive motors driven wheel, vertical rail 131 is slided; When driving member is screw connecting structure, can arrange the screwed hole be connected with screw flight in one end of vertical rail 131, drive motors output is fixed in screw rod, by the cooperation of screw rod and screwed hole, vertical rail 131 is slided; When driving member is Timing Belt, vertical rail 131 lower end can be fixed on Timing Belt, and drive Timing Belt to move by drive motors, vertical rail 131 is slided.It should be noted that: above-mentioned drive motors and driving member are not limited in above-described structure, also can be other structures that those skilled in the art can learn, only need meet and vertical rail 131 can be made along horizontal rail 141 horizontal slip.
Above-mentioned power spreading device also includes controller, is connected to the ultrasound electric machine of elevating mechanism 13 and the drive motors of horizontal mobile mechanism 14, controls respectively to ultrasound electric machine and drive motors.
In the present embodiment, above-mentioned vertical rail 131 and horizontal rail 141 can be also the devices that polished rod etc. has motion guide, as long as realize the upper and lower of scraper 12 and move left and right.
Above-mentioned power spreading device is by arranging elevating mechanism 13, scraper 12 can be moved up and down relative to paving powder platform 11, and then the gap between adjustment scraper 12 lower end and paving powder platform 11, reduce the last layer dusty material omitted on paving powder platform 11, avoid the proportioning of the dusty material to lower one deck to impact; And by arranging horizontal mobile mechanism 14, after dusty material has been laid by scraper 12, elevating mechanism 13 oppositely can be moved to original position together with scraper 12, to treat paving powder next time, avoid scraper 12 to come in contact with the powder bed laid, cause powder bed damaged, affect follow-up increasing material manufacture.
The utility model also provides a kind of and increases material manufacturing installation, comprises above-mentioned power spreading device, with reference to Fig. 2 and Fig. 3, is 1 by power spreading device label in the present embodiment.Increasing material manufacturing installation of the present utility model also comprises:
Working chamber 2, provide the airtight chamber required for entity component manufacture, above-mentioned power spreading device 1 is positioned at working chamber 2, concrete, and power spreading device 1 is movable is connected to working chamber 2, also can be fixedly installed in working chamber 2;
At least two powder casees 3 are provided with in working chamber 2, for placing and supply dusty material, in the present embodiment, the dusty material of identical component in above-mentioned powder case 3, can be placed, also the dusty material of heterogeneity can be placed, for the manufacture of the entity component that material composition in short transverse is different.Powder case 3 is provided with discharging opening, with the discharging of dusty material in the inner, concrete, by micro-mode of shaking, dusty material can be transferred out in powder case 3, such as in powder case 3 lower end, vibrating motor is set as vibration source, is controlled the speed of discharging by the difference of its vibration frequency; Can also be arrange metrological service in powder case 3 inside, quantitative outwards carries out feeding.
Moveable powder receiving box 4 is provided with in the below of above-mentioned powder case 3, this powder receiving box 4 is for receiving the dusty material of conveying in powder case 3, and when arranging multiple powder case 3, its can move to as required treat discharging powder case 3 below, in the present embodiment, the movement of above-mentioned powder receiving box 4 can by motor or the driving such as cylinder, oil cylinder.Preferably, when the powdered material components in powder case 3 is not identical, this powder receiving box 4 also has the function of mixed-powder, concrete, (in prior art, various structures all can realize powder receiving box 4 can be arranged to the structure that can roll, do not repeat them here), to rock mixing to the dusty material of heterogeneity; Also rabbling mechanism can be set in the inside of powder receiving box 4, by carrying out dusty material stirring the effect realizing mixing.After being mixed by dusty material, mixed dusty material is placed on the paving powder platform 11 of power spreading device 1 by powder receiving box 4.
The present embodiment is provided with LOAD CELLS on powder receiving box 4, measures for the dusty material carried each powder case 3, accurately to control the proportioning of the dusty material in each powder case 3.Preferably, a weighing platform can also be set, so that the weighing of dusty material.
Formation cylinder 5 is provided with in working chamber 2, this concrete formation cylinder 5 comprises cylinder body 51 and to be located in cylinder body 51 and the piston 52 moved up and down, what wherein the upper surface of cylinder body 51 was concordant and airtight is connected to paving powder platform 11, above-mentioned at least two powder casees 3 are all arranged on the side of cylinder body 5, mixed dusty material on paving powder platform 11 is laid in the top of piston 52 by scraper 12 by power spreading device 1, specifically be paved with the space that piston 52 top and cylinder body 51 are formed, and make mixed dusty material form powder thin layer.In the present embodiment, scraper 8 across whole cylinder body 51, to ensure that the dusty material be laid on piston 52 can form required powder thin layer.
Be provided with ray generating device 6 at the top of working chamber 2, this ray generating device 6 is positioned at the top of formation cylinder 5, and produces the ray of melting powder material, scans the powder thin layer laid, melts.
In the present embodiment, the ray that ray generating device 6 produces can be electron beam, and now inside, working chamber 2 is vacuum state, and the accelerating potential of electron beam is 60kV, the maximum 3kW of power.Working chamber 2 maintains the pressure of 0.001-1Pa by vacuum equipment.Dusty material can be simple metal or metal alloy, as titanium alloy, titanium, aluminium alloy, aluminium, titanium-aluminium alloy, stainless steel, Co-Cr alloy etc., and powder diameter scope 10-150 micron.Also electron beam can be changed into laser beam, the vacuum environment in working chamber 2 is replaced with inert gas shielding environment, and dusty material is not limited to metal, can be the nonmetallic materials such as nylon, macromolecular material.
Increase the process of material manufacture below for one deck, the specific works process of the increasing material manufacturing installation of the present embodiment set forth:
Before carrying out the manufacture of increasing material, first the composition of the dusty material of this layer and proportioning are set (composition is identical, without the need to carrying out the setting of proportioning), the dusty material in powder case 3 is received subsequently by powder receiving box 4, and in receiving course, determine the conveying capacity of the dusty material in each powder case 3, carry out the mixing of dusty material subsequently and be placed on the paving powder platform 11 of power spreading device 1;
The scraper 12 of power spreading device 1 is rested on the left of the dusty material on paving powder platform 11 by horizontal mobile mechanism 14, and under the drive of elevating mechanism 13, adjust and spread the gap (as shown in Figure 4) between powder platform 11; Move to the direction of formation cylinder 5 under the drive of horizontal mobile mechanism 14 subsequently, carry out paving powder (as shown in Figure 5), the dusty material spread on powder platform 11 is laid on piston 52 the most at last, form a powder thin layer 101 (as shown in Figure 6), then scraper 12 is lifted by elevating mechanism 13, do not contact with powder thin layer 101, and by horizontal mobile mechanism 14 fast return to initial position, to treat paving powder circulation (as shown in Figure 7) next time;
Produce ray by ray generating device 6 to scan powder thin layer 101, melt, the object layer 102 needed for formation, complete the increasing material manufacture of this layer.
After completing the increasing material manufacture of this layer, piston 52 declines and equals the distance of a layer thickness, increases material manufacturing installation afterwards and continues to repeat said process, to complete the increasing material manufacture of lower one deck.
By the repeatedly circulation to above-mentioned increasing material manufacture process, produce required entity component eventually through the mode successively superposed.
Obviously, above-described embodiment of the present utility model is only used to clearly demonstrate the utility model example, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., within the protection domain that all should be included in the utility model claim.
Claims (10)
1. a power spreading device, is characterized in that, comprising:
Paving powder platform (11), places dusty material to be laid;
Scraper (12), is located at the top of paving powder platform (11), lays described dusty material;
Elevating mechanism (13), its affixed described scraper (12), and drive scraper (12) to be vertically elevated;
Horizontal mobile mechanism (14), connects described elevating mechanism (13), and drives elevating mechanism (13) to move in the horizontal direction;
Controller, is connected to elevating mechanism (13) and horizontal mobile mechanism (14).
2. power spreading device according to claim 1, it is characterized in that, described elevating mechanism (13) comprises vertical rail (131), be slidably arranged in the slide block (132) on vertical rail (131), output is fixed in slide block (132) and drives the ultrasound electric machine that slide block (132) slides, described ultrasound electric machine is connected to described controller, and scraper (12) is installed on described slide block (132).
3. power spreading device according to claim 1 and 2, it is characterized in that, described horizontal mobile mechanism (14) comprises horizontal rail (141) and drive motors, described vertical rail (131) is slidably located in horizontal rail (141), described drive motors is connected with driving member, one end of vertical rail (131) is connected to described driving member, and described drive motors drives vertical rail (131) to slide along horizontal rail (141) by described driving member.
4. power spreading device according to claim 3, is characterized in that, described driving member comprises Rack and gear transmission structure or screw connecting structure or Timing Belt.
5. power spreading device according to claim 1, is characterized in that, described scraper (2) comprises some to overlap and in the steel disc of comb shape, and described steel disc is obliquely installed.
6. power spreading device according to claim 5, is characterized in that, between adjacent two described steel discs, the comb gear of one of them steel disc is located at the comb gap place of another one steel disc.
7. increase a material manufacturing installation, it is characterized in that, comprise as arbitrary in claim 1-6 as described in power spreading device.
8. increasing material manufacturing installation according to claim 7, is characterized in that, also comprise:
Working chamber (2), described power spreading device is positioned at working chamber (2);
At least two powder casees (3), place the described dusty material of identical/heterogeneity respectively;
Powder receiving box (4), movably be located at the below of powder case (3), receive the dusty material that also mixed powder case (3) is carried, and mixed dusty material is placed on the paving powder platform (11) of described power spreading device;
Formation cylinder (5), be arranged in working chamber (2), it comprises cylinder body (51) and to be located in cylinder body (51) and the piston moved up and down (52), what described cylinder body (51) upper surface was concordant and airtight is connected to described paving powder platform (11), and the dusty material spread on powder platform (11) is laid in described piston (52) top by described power spreading device;
Ray generating device (6), is arranged on the top of working chamber (2), and is positioned at the top of formation cylinder (5).
9. increasing material manufacturing installation according to claim 8, is characterized in that, described powder receiving box (4) is provided with LOAD CELLS.
10. increasing material manufacturing installation according to claim 8, is characterized in that, the ray that described ray generating device (6) produces is laser or electron beam, and when described ray is electron beam, described working chamber (2) are vacuum state.
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| CN201520971371.4U CN205148936U (en) | 2015-11-30 | 2015-11-30 | Spread powder device and vibration material disk device |
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| CN201520971371.4U CN205148936U (en) | 2015-11-30 | 2015-11-30 | Spread powder device and vibration material disk device |
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| CN109249024A (en) * | 2018-10-25 | 2019-01-22 | 哈尔滨工程大学 | The method that precinct laser fusion increasing material manufacturing quickly prepares metallic composite molded part |
| CN109249024B (en) * | 2018-10-25 | 2020-12-04 | 哈尔滨工程大学 | Method for rapidly preparing metal composite material formed part by selective laser melting additive manufacturing |
| WO2020259425A1 (en) * | 2019-06-27 | 2020-12-30 | 共享智能铸造产业创新中心有限公司 | 3dp powder printing method, device and system, and storage medium |
| US11919247B2 (en) | 2019-06-27 | 2024-03-05 | Kocel Intelligent Machinery Limited | Powder-based three-dimensional printing (3DP) method, device and system, and computer-readable storage medium |
| GB2593870A (en) * | 2020-03-27 | 2021-10-13 | Wayland Additive Ltd | Powder material recirculation in additive layer manufacturing apparatus |
| GB2593870B (en) * | 2020-03-27 | 2023-11-08 | Wayland Additive Ltd | Powder material recirculation in additive layer manufacturing apparatus |
| CN115351302A (en) * | 2022-10-19 | 2022-11-18 | 西安赛隆增材技术股份有限公司 | Powder paving and feeding device and method for additive manufacturing equipment |
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