WO2019041354A1 - Dispositif d'impression 3d à recyclage de poudre et méthode de fonctionnement associée - Google Patents

Dispositif d'impression 3d à recyclage de poudre et méthode de fonctionnement associée Download PDF

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Publication number
WO2019041354A1
WO2019041354A1 PCT/CN2017/100417 CN2017100417W WO2019041354A1 WO 2019041354 A1 WO2019041354 A1 WO 2019041354A1 CN 2017100417 W CN2017100417 W CN 2017100417W WO 2019041354 A1 WO2019041354 A1 WO 2019041354A1
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WO
WIPO (PCT)
Prior art keywords
powder
laser
processing
dimensional printing
processing substrate
Prior art date
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Ceased
Application number
PCT/CN2017/100417
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English (en)
Chinese (zh)
Inventor
陈馨宝
高怀恩
王唯霖
严瑞雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tongtai Machine and Tool Co Ltd
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Tongtai Machine and Tool Co Ltd
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Publication date
Application filed by Tongtai Machine and Tool Co Ltd filed Critical Tongtai Machine and Tool Co Ltd
Priority to PCT/CN2017/100417 priority Critical patent/WO2019041354A1/fr
Publication of WO2019041354A1 publication Critical patent/WO2019041354A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00

Definitions

  • the present invention relates to a three-dimensional printing apparatus and an operating method thereof, and more particularly to a three-dimensional printing apparatus for dust recovery and an operating method thereof.
  • the current multi-layer manufacturing technology is mainly based on laser lamination manufacturing technology, which uses the principle of laser melting, and cuts into a two-dimensional geometric shape according to the three-dimensional model, deposits a powder layer with the layering device, and then focuses the laser on the powder.
  • the layer is melt-formed for the required two-dimensional shape, and the finished product is formed layer by layer, so that a complicated structure that cannot be produced by conventional processing can be achieved.
  • the powder supply of the powder layer is limited by the powder supply platform, one or more heterogeneous powders cannot be provided. Further, the blowing gas on the powder layer cannot effectively provide long-distance dust recovery, and the working range is affected by Limited to the laminar flow distance and wind speed of the gas field.
  • the scanning mode of laser light is limited due to the direction of the gas flow field, which cannot effectively provide a better scanning mode.
  • the laser beam is scanned. It must not be processed in parallel with the gas field, and the production process must be arranged in the order of scanning the parts due to the wind direction of the gas field. It is not possible to process more than one part at the same time. This increases the manufacturing process time and does not effectively reduce the processing time.
  • the main object of the present invention is to provide a three-dimensional printing device for dust recovery and a method for operating the same, which can reduce the speed limit of the gas flow field that cannot be used for long-term blowing of dust, thereby enabling the gas flow field to be designed. Increase the manufacturing process output speed, shorten the time to wait for the workpiece processing sequence in the manufacturing process, and improve the stability of the manufacturing process.
  • the present invention provides a three-dimensional printing device for dust recovery, comprising a base, a processing substrate, an optical module and a powder conveying module; the processing substrate is disposed on the base for receiving a powder body; the optical module has at least one laser source disposed above the processing substrate for emitting a laser light to the powder to form a workpiece; the powder conveying module has a two-powder channel a second powder channel port, a two gas channel and a two gas channel port, wherein the powder channel is disposed above the processing substrate; the powder channel port is respectively formed in a powder body of the powder channel And disposed on two sides of the laser light for outputting the powder to the processing substrate; the gas passage is disposed above the processing substrate; the gas passage openings are respectively formed in the gas passage a first end of the gas and located on both sides of the laser light for respectively outputting gas to the upper portion of the processing substrate and absorbing the laser light to melt the powder on the processing substrate Dust, wherein the gas passage opening between forming a
  • the powder conveying module further has at least two powder supply tanks respectively disposed at a second end of the powder passage of the powder passage.
  • the powder conveying module further has at least two scrapers respectively disposed at the powder passage opening for contacting the processing bottom plate.
  • the base has a frame body and a lifting mechanism, and the lifting mechanism is disposed on the frame body for raising or lowering the processing floor.
  • the dust recovery three-dimensional printing device further includes a vertical horizontal moving mechanism and a rotating mechanism, the vertical horizontal moving mechanism is mounted on the base, and the rotating mechanism is disposed on the In the vertical horizontal moving mechanism, the optical module and the powder conveying module are mounted on the rotating mechanism and rotate in conjunction with the rotating mechanism.
  • the optical module further has at least one coaxial vision component and at least one galvanometer component, and the coaxial vision component is combined on the laser source for performing the processing substrate A coaxial vision imaging is obtained by optical sensing; the galvanometer assembly is combined on the laser source for performing laser light scanning in cooperation with the laser source.
  • the plurality of laser sources of the optical module are arranged along a set direction, and the laser light of the laser source is orthogonal to a direction of the gas flow field or forms greater than 45 degrees. An angle.
  • the present invention further provides a method for operating a three-dimensional printing apparatus for dust recovery, comprising a powder supplying step, a powdering step, a heating step, a recycling step, and a completion determining step;
  • the powdering step is to deliver a certain amount of powder to at least one powder passage through at least one powder feeding tank, and output the powder through a powder passage opening to a processing bottom plate; a powder passage opening, wherein at least one scraper disposed at the powder passage opening flattens the powder on the processing substrate;
  • the heating step is to move at least one laser source to emit the laser source Forming a workpiece by laser light melting the powder on the processing substrate;
  • the recycling step is to use two gases located on two sides of the laser light when the laser light melts the powder on the processing substrate Forming a gas flow field to absorb a dust generated by the laser light melting the powder on the processing substrate;
  • the completion determining step is to lower the processing substrate by a height, and then determining whether the completion of the Member, if the workpiece
  • the resetting step is for moving the laser source to reset the laser light emitted by the laser source to the processing substrate An initial position.
  • the laser light in the step of spreading, is moved from an initial position of the processing substrate along a scanning path to an end position of the processing substrate, and the linkage is The powder passage opening moves, wherein the initial position and the end position are respectively located on opposite sides of the processing bottom plate, and the scanning path is in a wave path.
  • the design of the lifting mechanism, the vertical horizontal moving mechanism, and the rotating mechanism 7 can rapidly move and planarly rotate the processing substrate along the X-axis, the Y-axis, and the Z-axis, while the galvanometer assembly can Adjusting the emission angle of the laser light can reduce the orthogonal requirement limit of the processing angle direction of the laser scanning and the flow field, thereby further improving the working efficiency of molding the workpiece, and Effectively increase the working range of the processing area of the workpiece.
  • the design of the powder conveying module it is possible to reduce the speed limit of the gas flow field incapable of blowing the dust for a long stroke, thereby increasing the production process speed, shortening the waiting time for the workpiece processing sequence in the manufacturing process, and improving manufacturing. Process stability, while ensuring the quality of the workpiece.
  • Figure 1 is a perspective view of a preferred embodiment of a three-dimensional printing apparatus for dust recovery in accordance with the present invention.
  • FIG. 2 is a side elevational view of a preferred embodiment of a three-dimensional printing apparatus for dust recovery in accordance with the present invention.
  • 3 and 4 are views showing a state of use of a preferred embodiment of a three-dimensional printing apparatus for dust recovery according to the present invention.
  • 5 and 6 are schematic views of a scanning path of a laser according to a preferred embodiment of the three-dimensional printing apparatus for dust recovery according to the present invention.
  • the base 2 has a frame 21 and a lifting mechanism 22 , wherein the processing plate 3 is movably mounted on the frame 21 , and the lifting mechanism 22 is disposed on the frame
  • the body 21 is located below the processing base 3, and the lifting mechanism 22 is interlocked with the processing base 3, that is, when the lifting mechanism 22 is driven to start moving up or down,
  • the processing substrate 3 is moved up or down to move between a lowered position away from the powder conveying module 5 and a raised position adjacent to the powder conveying module 5.
  • the processing substrate 3 is disposed on the lifting mechanism 22 of the base 2 for receiving a powder 101 (see FIG. 3 ) output by the powder conveying module 5 .
  • the bottom plate 3 can be lifted by the lifting mechanism 22 to the raised position near the powder conveying module 5, and can also be lowered to the lowered position away from the powder conveying module 5.
  • the coaxial vision component 42 is combined on the laser source 41 for cooperating with a sensing component, such as a thermometer, a thermal imager, and a photosensitive coupling component ( Charge Coupled Device; CCD), photo diode, and optical sensing of the processing substrate 4 to obtain a coaxial vision imaging;
  • the galvanometer assembly 43 is combined on the laser source 41 for Laser scanning is performed in conjunction with the laser source 41;
  • the longitudinal fine adjustment base 44 is disposed on the vertical horizontal moving mechanism 6 for combining the laser sources 41 to enable the laser source 41 to be longitudinally Adjust slightly above and below.
  • the optical module 4 is provided with two laser sources 41, the laser sources 41 are arranged along a set direction, and the laser light of the laser source and the powder conveying module 5 are generated.
  • One direction of a gas flow field is orthogonal or forms an angle greater than 45 degrees.
  • the powder conveying module 5 has two powder passages 51 and two powders.
  • the powder passages 51 are disposed above the processing bottom plate 3, and the powder passage openings 52 are respectively formed at a powder first end 511 of the powder passage 51, and the powder first end 511 are respectively located on opposite sides of the laser light emitted by the laser source 41, the powder passage 51 is used to transport the powder 101, and the powder is output from the powder passage port 52 to the Processing the bottom plate 3;
  • the gas passage 53 is disposed above the processing bottom plate 3, the gas passage openings 54 are respectively formed at a gas first end 531 of the gas passage 53, and the gas first end 531 Located on opposite sides of the laser light emitted by the laser source 41, the gas channel 53 is used to transport the gas, wherein a gas passage port 54 is used to output gas to the upper surface of the processing substrate 3, another gas The passage
  • the vertical horizontal moving mechanism 6 has a moving frame 61 and a translation seat 62.
  • the moving frame 61 is erectably mounted on the base 2, and the translation seat 62 is vertically movable.
  • the movable frame 61 can be combined horizontally so that the translation seat 62 can move along the Z axis through the moving frame 61 in addition to being movable in the X-axis-Y-axis plane.
  • the vertical horizontal moving mechanism 6 and the rotating mechanism 7 can move the laser source 41 to perform positioning and resetting of the processing substrate 3, and reset the laser light 103 emitted by the laser source 41 to the An initial position of the processing substrate 3 is further controlled; then, a corresponding valve or powder supply hopper is controlled, and a certain amount of the powder 101 is supplied to the powder supply tank 55, and the type of the supplied powder 101 can also be selected.
  • the powder 101 can pass through the powder supply tank 55 to perform a certain amount of powder transportation on at least one powder passage 51, and the powder 101 is output to the processing through the powder passage opening 52.
  • the displacement of the vertical horizontal movement mechanism 6 and the rotation mechanism 7 is driven to control the angle of movement of the powder passage opening 52 and the plane movement, so that the powder passage opening 52 is disposed.
  • the scraper 56 flattens the powder 101 on the processing substrate 3; the moving of the laser source 41 is performed to perform programmed heating of the powder 101 at a specified position of the processing substrate 3, wherein one or more can be simultaneously performed Control of laser 103, And the laser light 103 emitted from the laser source 41 is melted on the processing substrate 3 to be solidified on the processing substrate 3; when the laser 103 melts the powder 101 on the processing substrate, the utilization is located
  • the two gas passage openings 54 on the two sides of the laser 103 form a gas flow field for absorbing the dust 103 generated by the laser 103 to melt the powder 101 on the processing substrate 3, wherein the two gas passage ports 54 is a program corresponding to each other and blowing and inhaling separately.
  • the powder passage port 52 on the left side starts to be supplied in the direction indicated by the arrow D1, and the gas flow field is from the left side.
  • the gas passage port 54 flows to the right gas passage port 54 in the direction indicated by the arrow C1.
  • the powder passage port 52 on the right side starts to be supplied in the direction indicated by the arrow D2
  • the gas flow field is from the right side.
  • the gas passage port 54 flows to the left gas passage port 54 in the direction indicated by the arrow D2.
  • the processing base plate 3 can be quickly moved and planarly rotated along the X-axis, the Y-axis and the Z-axis, while the The galvanometer assembly 43 can adjust the emission angle of the laser 103, and can reduce the orthogonal demand limit of the processing angle direction and the flow field of the laser scanning, thereby improving the working efficiency of molding the workpiece, and effectively improving the The working range of the machining area of the workpiece. Further, with the design of the powder conveying module 5, it is possible to reduce the speed limit in which the gas flow field cannot be blown by the long stroke.
  • the production process speed can be increased, the time for waiting for the workpiece processing sequence in the manufacturing process can be shortened, and the stability of the manufacturing process can be improved, and the processing quality of the workpiece can be ensured.
  • the powder feeding tank 55 and the powder passage 51 are designed to supply one to a plurality of different powders, and the material of the workpiece can be increased to become a composite component, and the function of the material is different. On the workpiece.
  • step S201 instructions are provided to a vertical horizontal moving mechanism 6 and a rotating mechanism 7 for moving at least one laser via a computer or numerical control.
  • the source 41 performs positioning and resetting of a processing substrate 3 to enable the laser source
  • the laser light 103 emitted by 41 is reset to an initial position of the processing substrate 3.
  • a certain amount of the powder 101 is supplied to at least one of the powder supply tanks 55 by controlling the corresponding valve or the powder supply hopper, and the supply is performed.
  • the powder 101 type can also be set according to computer command or numerical control, so that the powder 101 can transmit a certain amount of powder to the at least one powder passage 51 through the powder supply tank 55.
  • the powder 101 is output to the processing substrate 3 through a powder passage port 52.
  • the displacement of the vertical horizontal moving mechanism 6 and the rotating mechanism 7 is driven by computer command or numerical control to the powder.
  • the passage opening 52 performs angular control and planar movement of the moving direction such that at least one scraper 56 disposed at the powder passage opening 52 flattens the powder 101 on the processing substrate 3.
  • the vertical horizontal moving mechanism 6 and the rotating mechanism 7 are driven to move, and the initial position of the laser light 103 from the processing substrate 3 is along a scanning path A of FIG. 5 or one of FIG.
  • the scanning path B is moved to an end position of the processing substrate 3, and then the powder passage opening 52 is moved, wherein the initial position and the end position are respectively located on opposite sides of the processing substrate 3, and
  • the scanning path is in a wave path; in addition, during the movement of a scanning path A as shown in FIG. 5 or a scanning path B in FIG. 6, an inner rotating member 71 of the rotating mechanism 7 may be An outer rotating member 72 rotates the optical module 4 and the powder conveying module 5 respectively, thereby adjusting a laser scanning direction of the optical module 4 and a powder spreading direction of the powder conveying module 5, thereby improving The compactness and firmness of the subsequent curing of the powder 101.
  • the powder of a specified position of the processing substrate 3 is processed by moving the laser source 41 via computer command or numerical control.
  • Programmized heating wherein the control of one or more lasers 103 can be performed simultaneously, so that the laser light 103 emitted by the laser source 41 is melted on the processing substrate 3 to be solidified on the processing substrate 3 And forming a workpiece after repeating this step a plurality of times.
  • the laser in the recovery step S205, when the laser light 103 in the heating step S204 melts the powder 101 on the processing substrate, the laser is located in the processing.
  • the two gas passage openings 54 on both sides of the 103 form a gas flow field for absorbing the dust 103 generated by the laser 103 to melt the powder 101 on the processing substrate 3, wherein the two gas passage openings 54 are each other
  • the gas of the gas flow field may be nitrogen (N 2 ) or an inert gas, such as argon (Ar) and helium (He), at a certain flow rate.
  • the powder passage port 52 on the left side starts to supply powder
  • the gas flow field is from the gas passage port on the left side.
  • 54 flows to the right gas passage port 54 as indicated by the arrow; as shown in FIG. 4, when the powder conveying module 5 moves to the right as indicated by the arrow, the right powder passage port 52 starts to supply powder, the gas flow.
  • the field is a gas passage opening 54 that flows from the gas passage port 54 on the right to the left as indicated by the arrow.
  • the processing substrate 3 is lowered by a height, and then it is determined whether the workpiece is completed, and if so, the workpiece is taken out, otherwise Returning to the powdering step S202 until the workpiece is completed, wherein the workpiece may be one or more parts.
  • the processing base plate 3 can be quickly moved and planarly rotated along the X-axis, the Y-axis and the Z-axis, while the The galvanometer assembly 43 can adjust the emission angle of the laser 103, and can reduce the orthogonal demand limit of the processing angle direction and the flow field of the laser scanning, thereby improving the working efficiency of molding the workpiece, and effectively improving the The working range of the machining area of the workpiece.
  • the design of the powder conveying module 5 it is possible to reduce the speed limit in which the gas flow field cannot be blown by the long stroke, and it is possible to avoid parallel blowing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)

Abstract

L'invention concerne un dispositif d'impression 3D à recyclage de poudre et une méthode de fonctionnement associée. Le dispositif d'impression 3D à recyclage de poudre comprend une base (2), une plateforme de traitement (3), un module optique (4) et un module de transport de poudre (5). La conception du module de transport de poudre permet une augmentation de la vitesse de production pendant la fabrication, tout en diminuant également les temps d'attente et en augmentant la stabilité du procédé de fabrication.
PCT/CN2017/100417 2017-09-04 2017-09-04 Dispositif d'impression 3d à recyclage de poudre et méthode de fonctionnement associée Ceased WO2019041354A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/100417 WO2019041354A1 (fr) 2017-09-04 2017-09-04 Dispositif d'impression 3d à recyclage de poudre et méthode de fonctionnement associée

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/100417 WO2019041354A1 (fr) 2017-09-04 2017-09-04 Dispositif d'impression 3d à recyclage de poudre et méthode de fonctionnement associée

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WO2019041354A1 true WO2019041354A1 (fr) 2019-03-07

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101954330A (zh) * 2010-09-25 2011-01-26 中山市君禾机电设备有限公司 一种粉末回收装置
CN105666875A (zh) * 2012-09-05 2016-06-15 阿普雷奇亚制药公司 三维打印系统和设备组件
CN205416388U (zh) * 2016-03-16 2016-08-03 天津伟茂科技发展有限公司 一种耗材回收3d打印机
US20160236422A1 (en) * 2015-02-13 2016-08-18 Ricoh Company, Ltd. Device and method for removing powder and apparatus for fabricating three-dimensional object

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101954330A (zh) * 2010-09-25 2011-01-26 中山市君禾机电设备有限公司 一种粉末回收装置
CN105666875A (zh) * 2012-09-05 2016-06-15 阿普雷奇亚制药公司 三维打印系统和设备组件
US20160236422A1 (en) * 2015-02-13 2016-08-18 Ricoh Company, Ltd. Device and method for removing powder and apparatus for fabricating three-dimensional object
CN205416388U (zh) * 2016-03-16 2016-08-03 天津伟茂科技发展有限公司 一种耗材回收3d打印机

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