CN105172145A - Multi-knife automatic knife changing type powder laying scraper knife device of 3D printer - Google Patents
Multi-knife automatic knife changing type powder laying scraper knife device of 3D printer Download PDFInfo
- Publication number
- CN105172145A CN105172145A CN201510653250.XA CN201510653250A CN105172145A CN 105172145 A CN105172145 A CN 105172145A CN 201510653250 A CN201510653250 A CN 201510653250A CN 105172145 A CN105172145 A CN 105172145A
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- China
- Prior art keywords
- knife
- printer
- wing
- doctor blade
- paving powder
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- 239000000843 powder Substances 0.000 title claims abstract description 42
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000017105 transposition Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 238000005245 sintering Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention belongs to the field of additive manufacturing, and relates to a multi-knife automatic knife changing type powder laying scraper knife device of a 3D printer. The device is arranged above a sinter molding face or a curing molding face and can do reciprocating motion along guide rails, and scraper knife blades are used for striking off powder and completing the powder laying procedure. The device is characterized in that the scraper knife blades are arranged, the scraper knife blade at the lowest position serves as a work knife blade, the rest of knife blades serve as spare knife blades, the spare knife blades can be automatically exchanged to the lower work positions under control of a control system, and therefore normal running of a machine is guaranteed; shutdown is not needed when a knife holder shaft turns, and therefore the production cost of the 3D printer is reduced, and time is saved.
Description
Technical field
The present invention relates to and increase material and manufacture field, especially Layered manufacturing, successively superpose and form the 3D printer of part.
Background technology
Adopt different materials or different moulding process, the structure of 3D printer and principle are also different, successively spread powder sintering or successively spread the 3D printer of powder curing molding, be one of 3D printer that current structure is comparatively ripe, comprise metal powder and non-metal powder 3D printer.As shown in Figure 1 and Figure 2, be the main frame schematic diagram successively spreading the shaping 3D printer of powder, primarily of powder feeder unit 1, paving powder doctor blade device 7, forming cavity system 6, sintering or solidification equipment 8, receive powder chamber 5 and the formation such as control system, the gentle circulatory system of cooling; Paving powder is the critical process in the 3D printer course of work, due to the repetitive process that paving powder operation is a frequent cycle, so the frequent paving powder doctor blade used can often damage, once scraper damages, workpiece just may be caused to give up halfway, palpus maintenance down or need more allowing blade replacement; Because most of part needs the protection of inert gas in print procedure, so shut down start again and can waste a large amount of inert gases, operating process also quite bothers, this just substantially increases the printing cost of printer, also will delay the very long working time.
Summary of the invention
In order to solve quick-replaceable 3D printer paving powder doctor blade problem, the invention provides a kind of multitool automatic tool changer formula 3D printer paving powder doctor blade device, this device has multiple doctor blade, and can by the control realization automatic tool changer of control system.
The technical scheme that the present invention takes is: paving powder doctor blade device is placed in sinter molding or is solidified into the top of profile, can be reciprocating along guide rail, and strikes off powder by its wing, completes paving powder operation; Paving powder doctor blade device is provided with multiple wing, and wherein the wing of bottom is working blade, and all the other blades are spare blades, and spare blade under control of the control system, can exchange to the operating position of below automatically.
The invention has the beneficial effects as follows, cutter holder axle is rotated by reductor, shaft coupling, worm screw, worm-gear driven by motor A, and the rotation of cutter holder axle makes wing automatically change to the operating position of below, thus ensure that the normal operation of machine; Do not need during the transposition of cutter holder axle to shut down, therefore, make 3D printer reduce production cost, saved the time.
Accompanying drawing explanation
Fig. 1 is 3D printer host cross-sectional schematic.
Fig. 2 is the A-A cross-sectional schematic of Fig. 1.
Fig. 3 is the profile schematic three dimensional views of paving powder doctor blade device.
Fig. 4 is the transmission schematic three dimensional views of paving powder doctor blade device.
Fig. 5 is the part schematic three dimensional views of paving powder doctor blade device.
Fig. 6 is cutter holder axle generalized section.
In figure: 1. powder feeder unit, 2. use powder, 3. piston, 4. workpiece, 5. receive powder chamber, 6. forming cavity system, 7. spread powder doctor blade device, 8. sintering or solidification equipment, 9. camera, 701. cutter holder axles, 702. wings, 703. push type broach bars, 704. screws, 705. guide rails, 706. tool-post structures, 707. motor A, 708. reductors, 709. holdbacks-moving plate, 710. force snesor (or torque sensor), 711. holdbacks-still, 712. shaft couplings, 713. worm screws, 714. worm gears.
Detailed description of the invention
1. as shown in Fig. 3, Fig. 6, it is the embodiment of described paving powder doctor blade device, paving powder doctor blade device is placed in sinter molding or is solidified into the top of profile, can be reciprocating along guide rail (705), and strikes off powder by its wing (702), completes paving powder operation; Paving powder doctor blade device is provided with multiple wing (702), and wherein the wing of bottom is working blade, and all the other blades are spare blades, and spare blade under control of the control system, can exchange to the operating position of below automatically.
2. as shown in Figure 5, Figure 6, wing (702) is inlaid in the dovetail groove of cutter holder axle (701), and wing (702) is compressed by push type broach bar (703), screw (704), and the cross section of push type broach bar (703) is trapezoidal or wedge shape.
3. as shown in Figure 3, Figure 4, the two ends of cutter holder axle (701) are arranged on tool-post structure (706), and tool-post structure (706) is arranged on guide rail (705), and tool-post structure (706) separately has drive unit to drive, and move back and forth during work along guide rail (705) timing; Cutter holder axle (701) is by motor A(707) drive rotate by reductor (708), shaft coupling (712), worm screw (713), worm gear (714), the rotation of cutter holder axle (701) makes wing (702) transposition, and arrives the operating position of below exactly; Cutter holder axle (701) also can realize driving by other kind of drive and rotate.
4. as shown in Fig. 3, Fig. 4, Fig. 5, the end of cutter holder axle (701) is fixed with holdback-moving plate (709), and holdback-moving plate (709) and holdback-still (711) are coupled; Due to the effect of holdback, motor A(707) drive during cutter holder axle (701) tool changing and can only one direction rotate, also be the effect due to holdback, during wing (702) work, suffered power can pass through cutter holder axle (701), holdback directly passes to tool-post structure (706), counter-force suffered by worm gear-endless screw pair is reduced, not even by counter-force, therefore, what worm gear-endless screw pair can design is very little.
5. as shown in Fig. 3, Fig. 4, Fig. 5, the one end of force snesor (or torque sensor) (710) is packed on holdback-still (711), the other end of force snesor (or torque sensor) (710) is packed on tool-post structure (706), and force snesor (or torque sensor) (710) are connected with control system by wire; Force snesor (or torque sensor) (710) can pass through the force-bearing situation that holdback-still (711), holdback-moving plate (709) and cutter holder axle (701) monitor wing (702) at any time; and being sent to control system by force signal, control system implements omnidistance overload protection according to the stressed or overload situations of wing (702) to wing (702).
Claims (5)
1. multitool automatic tool changer formula 3D printer paving powder doctor blade device, is placed in sinter molding or is solidified into the top of profile, can be reciprocating along guide rail (705), and strikes off powder by its wing (702), completes paving powder operation; It is characterized in that: paving powder doctor blade device is provided with multiple wing (702), and wherein the wing of bottom is working blade, and all the other blades are spare blades, and spare blade under control of the control system, can exchange to the operating position of below automatically.
2. multitool automatic tool changer formula 3D printer paving powder doctor blade device according to claim 1, it is characterized in that: wing (702) is inlaid in the dovetail groove of cutter holder axle (701), wing (702) is compressed by push type broach bar (703), screw (704), and the cross section of push type broach bar (703) is trapezoidal or wedge shape.
3. multitool automatic tool changer formula 3D printer paving powder doctor blade device according to claim 1, the two ends of cutter holder axle (701) are arranged on tool-post structure (706), tool-post structure (706) is arranged on guide rail (705), tool-post structure (706) separately has drive unit to drive, and moves back and forth during work along guide rail (705) timing; It is characterized in that: cutter holder axle (701) is by motor A(707) drive rotate by reductor (708), shaft coupling (712), worm screw (713), worm gear (714), the rotation of cutter holder axle (701) makes wing (702) transposition, and can arrive the operating position of below exactly.
4. multitool automatic tool changer formula 3D printer paving powder doctor blade device according to claim 1, it is characterized in that: the end of cutter holder axle (701) is fixed with holdback-moving plate (709), holdback-moving plate (709) and holdback-still (711) are coupled.
5. multitool automatic tool changer formula 3D printer paving powder doctor blade device according to claim 1, it is characterized in that: the one end of force snesor (or torque sensor) (710) is packed on holdback-still (711), the other end of force snesor (or torque sensor) (710) is packed on tool-post structure (706), and force snesor (or torque sensor) (710) are connected with control system by wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510653250.XA CN105172145A (en) | 2015-10-11 | 2015-10-11 | Multi-knife automatic knife changing type powder laying scraper knife device of 3D printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510653250.XA CN105172145A (en) | 2015-10-11 | 2015-10-11 | Multi-knife automatic knife changing type powder laying scraper knife device of 3D printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105172145A true CN105172145A (en) | 2015-12-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510653250.XA Pending CN105172145A (en) | 2015-10-11 | 2015-10-11 | Multi-knife automatic knife changing type powder laying scraper knife device of 3D printer |
Country Status (1)
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| CN (1) | CN105172145A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729127A (en) * | 2016-05-05 | 2016-07-06 | 安徽中科镭泰激光科技有限公司 | A teaching machine for laser manufacturing |
| CN106964775A (en) * | 2017-05-10 | 2017-07-21 | 窦鹤鸿 | 3D printing equipment and 3D printer |
| CN107262975A (en) * | 2017-06-29 | 2017-10-20 | 重庆科技学院 | Alloy powder ball squeegee apparatus |
| CN107716203A (en) * | 2017-11-17 | 2018-02-23 | 江苏闳业机械股份有限公司 | A kind of difunctional scraper mechanism of compounding machine |
| WO2018132204A1 (en) * | 2017-01-13 | 2018-07-19 | General Electric Company | Method and apparatus for continuously refreshing a recoater blade for additive manufacturing |
| CN109203463A (en) * | 2017-11-24 | 2019-01-15 | 中国航空制造技术研究院 | Powder bed Multifunctional scraper, increasing material manufacturing powder bed and control method |
| CN110340364A (en) * | 2019-08-06 | 2019-10-18 | 飞而康快速制造科技有限责任公司 | Scraper more changing device, doctor assemblies and 3D printer |
| CN110494238A (en) * | 2017-02-21 | 2019-11-22 | 通用电气公司 | The increasing material manufacturing carried out using the heavy applicator with the heavy applicator blade that can be replaced in situ |
| CN113828775A (en) * | 2020-06-24 | 2021-12-24 | 天津大学 | Powder laying device for laser additive manufacturing of multilayer materials |
| US11312072B2 (en) | 2019-07-31 | 2022-04-26 | Hamilton Sundstrand Corporation | Blade changers for additive manufacturing systems and methods of interchanging re-coater blades in additive manufacturing systems |
| CN114571727A (en) * | 2020-12-02 | 2022-06-03 | 天津工业大学 | Electric scraper replacing and powder spreading system, additive manufacturing equipment and method |
| US11351725B2 (en) | 2019-01-25 | 2022-06-07 | Hamilton Sundstrand Corporation | Enhanced recoater edges |
| CN114603849A (en) * | 2022-04-14 | 2022-06-10 | 南京铖联激光科技有限公司 | Novel scraper device for additive manufacturing and powder laying method |
| US12024458B2 (en) | 2020-09-04 | 2024-07-02 | Hamilton Sundstrand Corporation | Glass-ceramic matrix composite feedstock and forming |
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| CN201493454U (en) * | 2009-08-24 | 2010-06-02 | 王建武 | Narrow edge widening device of mechanical crystallizer |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729127A (en) * | 2016-05-05 | 2016-07-06 | 安徽中科镭泰激光科技有限公司 | A teaching machine for laser manufacturing |
| US11167454B2 (en) | 2017-01-13 | 2021-11-09 | General Electric Company | Method and apparatus for continuously refreshing a recoater blade for additive manufacturing |
| WO2018132204A1 (en) * | 2017-01-13 | 2018-07-19 | General Electric Company | Method and apparatus for continuously refreshing a recoater blade for additive manufacturing |
| US11801633B2 (en) | 2017-01-13 | 2023-10-31 | General Electric Company | Apparatuses for continuously refreshing a recoater blade for additive manufacturing including a blade feed unit and arm portion |
| CN110494238A (en) * | 2017-02-21 | 2019-11-22 | 通用电气公司 | The increasing material manufacturing carried out using the heavy applicator with the heavy applicator blade that can be replaced in situ |
| CN106964775A (en) * | 2017-05-10 | 2017-07-21 | 窦鹤鸿 | 3D printing equipment and 3D printer |
| CN107262975A (en) * | 2017-06-29 | 2017-10-20 | 重庆科技学院 | Alloy powder ball squeegee apparatus |
| CN107262975B (en) * | 2017-06-29 | 2019-07-19 | 重庆科技学院 | Alloy powder coating device |
| CN107716203A (en) * | 2017-11-17 | 2018-02-23 | 江苏闳业机械股份有限公司 | A kind of difunctional scraper mechanism of compounding machine |
| CN109203463A (en) * | 2017-11-24 | 2019-01-15 | 中国航空制造技术研究院 | Powder bed Multifunctional scraper, increasing material manufacturing powder bed and control method |
| CN109203463B (en) * | 2017-11-24 | 2021-06-08 | 中国航空制造技术研究院 | Multifunctional scraper for powder bed, additive manufacturing powder bed and control method |
| US11351725B2 (en) | 2019-01-25 | 2022-06-07 | Hamilton Sundstrand Corporation | Enhanced recoater edges |
| US11745416B2 (en) | 2019-01-25 | 2023-09-05 | Hamilton Sundstrand Corporation | Enhanced recoater edges |
| US11312072B2 (en) | 2019-07-31 | 2022-04-26 | Hamilton Sundstrand Corporation | Blade changers for additive manufacturing systems and methods of interchanging re-coater blades in additive manufacturing systems |
| CN110340364B (en) * | 2019-08-06 | 2022-04-19 | 飞而康快速制造科技有限责任公司 | Scraper replacing device, scraper assembly and 3D printer |
| CN110340364A (en) * | 2019-08-06 | 2019-10-18 | 飞而康快速制造科技有限责任公司 | Scraper more changing device, doctor assemblies and 3D printer |
| CN113828775A (en) * | 2020-06-24 | 2021-12-24 | 天津大学 | Powder laying device for laser additive manufacturing of multilayer materials |
| US12024458B2 (en) | 2020-09-04 | 2024-07-02 | Hamilton Sundstrand Corporation | Glass-ceramic matrix composite feedstock and forming |
| CN114571727A (en) * | 2020-12-02 | 2022-06-03 | 天津工业大学 | Electric scraper replacing and powder spreading system, additive manufacturing equipment and method |
| CN114603849A (en) * | 2022-04-14 | 2022-06-10 | 南京铖联激光科技有限公司 | Novel scraper device for additive manufacturing and powder laying method |
| CN114603849B (en) * | 2022-04-14 | 2024-01-26 | 南京铖联激光科技有限公司 | Novel scraper device for additive manufacturing and powder spreading method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20151223 |