CN110549603B - Laser sintering forming machine - Google Patents
Laser sintering forming machine Download PDFInfo
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- CN110549603B CN110549603B CN201810562439.1A CN201810562439A CN110549603B CN 110549603 B CN110549603 B CN 110549603B CN 201810562439 A CN201810562439 A CN 201810562439A CN 110549603 B CN110549603 B CN 110549603B
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- 238000000149 argon plasma sintering Methods 0.000 title claims abstract description 15
- 239000000843 powder Substances 0.000 claims abstract description 127
- 230000007480 spreading Effects 0.000 claims description 36
- 238000003892 spreading Methods 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 9
- 239000000084 colloidal system Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims 6
- 238000007789 sealing Methods 0.000 abstract description 13
- 238000004140 cleaning Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract 1
- 230000007246 mechanism Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000011002 quantification Methods 0.000 description 3
- 238000010410 dusting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/141—Processes of additive manufacturing using only solid materials
- B29C64/153—Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
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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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
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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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/205—Means for applying layers
- B29C64/218—Rollers
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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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/245—Platforms or substrates
-
- 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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/255—Enclosures for the building material, e.g. powder containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention discloses a laser sintering forming machine, which belongs to the field of additive manufacturing and comprises an upper cylinder body, a lower cylinder body, a workbench and a telescopic structure. The workbench is fixed in the lower cylinder body, so that the sealing between the workbench and the cylinder body is realized; the upper cylinder body and the lower cylinder body are connected through the telescopic structure, the whole forming cylinder is guaranteed to be in a closed state, the sealing problem is solved, meanwhile, the forming quality of parts is guaranteed, and the problem of cleaning can be well solved. Compared with the prior art, the scheme adopted by the invention has no sealing problem between the workbench and the forming cylinder, can reduce external devices, reduce the manufacturing cost, reduce the waste of powder, avoid abrasion, reduce the maintenance amount and reduce the replacement of parts.
Description
Technical Field
The invention relates to the field of additive manufacturing, in particular to a laser sintering forming machine.
Background
In the laser sintering technology, the requirement on the sealing condition of the forming chamber is high, and most of the current technologies focus on researching how to realize the sealing state of the forming chamber by using external conditions, for example, a vacuum pump is arranged outside the forming chamber and the sealing is realized by using vacuum; or how to design a better sealing part or material to realize the sealing between the workbench and the forming cylinder wall, but the prior art can not achieve a more ideal sealing effect, and the sealing effect is increasingly poor due to abrasion, so that a series of maintenance problems are caused due to the need of frequently replacing a sealing element, and more importantly, the quality of the forming part can not meet the requirement; in addition, these current techniques do not solve the cleaning problem, and cleaning of the forming cylinder is important when multiple powders are to be printed in the same forming cylinder.
The existing powder spreading device comprises quantitative powder spreading and non-quantitative powder spreading, the quantitative powder spreading can save materials in the printing process, and manpower and material resources are saved in the recovery of the printed powder. The existing quantitative powder paving has mechanical quantification and electric quantification, and the quantitative mode of the mechanical quantification is only suitable for a 3D printer of one material, but is not suitable for paving powder of different materials and different quantities; the electric quantitative determination can be suitable for different materials and quantitative determination of different quantities, but the structure is complex and the requirement on equipment is high.
Disclosure of Invention
The invention aims to provide a telescopic forming cylinder which can completely solve the problems of sealing and cleaning, realizes quantitative supply of powder by using a quantitative powder laying mechanism, and has the advantages of simple equipment and low cost.
In order to achieve the purpose, the invention adopts the technical scheme that: a laser sintering forming machine comprises a frame 1, an upper cylinder body 2, a lower cylinder body 5, a lead screw nut pair 7, a directional cylinder body 6 and a powder paving mechanism 3;
the upper cylinder body and the lower cylinder body are connected through a telescopic structure 4, preferably, the connection is fixed connection so as to ensure that a forming chamber is a closed space; guide rails 9 are arranged on two symmetrical walls in the directional cylinder body 6, preferably, a pair of guide rails is arranged on each of the two walls and should be arranged in the middle of the cylinder wall of the directional cylinder body 6 to ensure that the lower cylinder body 5 keeps balance in the lifting process, correspondingly, sliding blocks 8 are arranged on the two symmetrical walls of the lower cylinder body 5, and the sliding blocks 8 are matched with the guide rails 9 to further realize the connection of the lower cylinder body 5 and the directional cylinder body 6; the screw-nut pair 7 is positioned at the center of the bottom end outside the lower cylinder 5, and two ends of the screw-nut pair 7 are respectively connected with the lower cylinder 5 and the directional cylinder 6 and are consistent with the cylinder Z-axis direction;
the powder paving device 3 comprises a controller 12, a horizontal guide rail 11, a horizontal sliding block 10 and a quantitative powder supply mechanism 19; the quantitative powder supply mechanism 19 comprises a powder supply groove 15, a powder spreading roller 16 and a scraper 14, wherein the powder supply groove 15 is in an inverted trapezoid shape, the bottom of the powder supply groove 15 is in an arc shape, the arc top is upward, and the arc bottom of the powder supply groove 15 is provided with a powder outlet 20 along the axial direction of the arc bottom; horizontal sliding blocks 10 are arranged at two ends of the top surface of the powder supply groove 15, the horizontal sliding blocks 10 are fixedly arranged on the top surface of the powder supply groove 15, and correspondingly, horizontal guide rails 11 are arranged in the horizontal sliding blocks 15 and movably connected with the horizontal guide rails; two ends of each horizontal guide rail 11 are fixed in the upper cylinder body 2, and when the powder spreading device works, the whole powder spreading device 3 moves along the horizontal guide rails 11 in the horizontal direction; the two ends of the air cylinder 23 are respectively connected with the powder spreading device 3 and the horizontal sliding block 10;
two ends of the powder supply groove 15 are provided with brackets 17, and the shape of the brackets is the same as that of the powder supply groove 15; the powder paving roller 16 is arranged at the arc-shaped bottom of the powder supply groove 15, rotating shafts 22 are arranged at two ends of the powder paving roller, and the powder paving roller 16 is connected with the bracket 17 through the rotating shafts 22 at the two ends of the powder paving roller, so that the powder paving roller 16 and the powder supply groove 15 are in a connected state; the diameter of the powder paving roller 16 is the same as that of the arc-shaped bottom of the powder supply groove 15, and the powder paving roller and the powder supply groove are in clearance fit; the powder spreading roller 16 is connected with a power device 18; the powder paving roller 16 is provided with a powder paving channel 21 corresponding to the powder outlet 20 along the axial direction;
two scraper supports 13 are respectively arranged on two sides of the powder supply groove 15 along the axial direction and are fixedly connected, and a support column is arranged on each scraper support 13; correspondingly, the scrapers 14 are symmetrically arranged on two sides of the powder supply groove 15 along the axial direction and are fixedly connected with the scraper bracket 13 through a strut; the height of the scraper 14 after fixing should be greater than the height of the dusting roller 16.
Further, the size of the gap is 0.1-0.2mm, preferably, 0.2 mm.
Further, the telescopic structure 4 is made of rubber, and preferably, the telescopic framework 4 comprises 4 pieces of telescopic rubber, and is preferably made of PVC material to prevent fatigue wear during working.
Further, the cross section of the telescopic structure 4 is rectangular or circular, and preferably, the left end and the right end of each telescopic colloid are fixedly connected with the two telescopic colloids.
Further, the height of the directional cylinder 6 is higher than that of the lower cylinder 5 and is located below the telescopic structure 4, and the slidable distance of the sliding block 8 is adapted to the telescopic distance of the telescopic structure 4, that is, the lifting distance of the lower cylinder 5 is at least less than or equal to the telescopic distance of the telescopic structure 4.
Further, the rack 1 comprises an upper mounting plate, a lower mounting plate and a bracket; the support is composed of 4 upright posts and 2 symmetrical cross beams, and two ends of each upright post are fixedly connected with the upper mounting plate and the lower mounting plate; the two ends of each beam are fixedly connected with the upright columns, and the two ends of the directional guide rail 6 are respectively fixedly connected with the lower mounting plate and the beams.
Compared with the prior art, the invention has the following advantages:
a laser sintering forming machine, a telescopic forming cylinder which can completely solve the problems of sealing and cleaning, and can greatly reduce the mass of the whole forming cylinder body; spread powder simple structure, spread powder quantity adjustable moreover.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a front sectional view of embodiment 1 of the present invention.
Fig. 2 is a schematic view of a guide rail and a slider according to embodiment 1 of the present invention.
Fig. 3 is a schematic view of a powder laying device in embodiment 1 of the invention.
Fig. 4 is an enlarged view of a front sectional view of the powder spreading device in embodiment 1 of the present invention.
FIG. 5 is a schematic view of a powder spreading roller in example 1 of the present invention.
The corresponding part names indicated by the numbers in the figures:
1. the powder spreading machine comprises a frame 2, an upper cylinder body 3, a powder spreading device 4, a telescopic structure 5, a lower cylinder body 6, a directional cylinder body 7, a screw-nut pair 8, a slide block 9, a guide rail 10, a horizontal slide block 11, a horizontal guide rail 12, a controller 13, a scraper support 14, a scraper 15, a powder supply groove 16, a powder spreading roller 17, a support 18, a power device 19, a quantitative powder supply mechanism 20, a powder outlet 21, a powder spreading channel 22, a rotating shaft 23, a cylinder 23, a powder feeding groove 16, a powder spreading roller 17, a powder spreading roller 18, a powder feeding mechanism 20, a powder outlet 21, a powder spreading channel 22, a rotating shaft 23, a powder spreading roller, a powder
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like refer to orientations or positional relationships based on those shown in the drawings or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, and are used for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
Example 1:
referring to fig. 1 to 5, a laser sintering forming machine comprises a frame 1, an upper cylinder 2, a lower cylinder 5, a screw-nut pair 7, a directional cylinder 6 and a powder spreading mechanism 3; the upper cylinder body and the lower cylinder body are fixedly connected with the telescopic structure 4 through embedding so as to ensure that the forming chamber is a closed space.
In this embodiment, two symmetrical walls inside the directional cylinder body 6 are provided with guide rails 9, each of the two walls is provided with a pair of guide rails and should be installed at the middle position of the cylinder wall of the directional cylinder body 6 to ensure that the lower cylinder body 5 keeps balance in the lifting process, correspondingly, two symmetrical walls of the lower cylinder body 5 are provided with slide blocks 8, and the slide blocks 8 are matched with the guide rails 9 to further realize the connection between the lower cylinder body 5 and the directional cylinder body 6; the screw-nut pair 7 is located at the center of the bottom end outside the lower cylinder 5, and two ends of the screw-nut pair 7 are respectively connected with the lower cylinder 5 and the directional cylinder 6 and are consistent with the cylinder Z-axis direction.
The powder paving device 3 comprises a controller 12, a horizontal guide rail 11, a horizontal sliding block 10 and a quantitative powder supply mechanism 19; the quantitative powder supply mechanism 19 comprises a powder supply groove 15, a powder spreading roller 16 and a scraper 14, wherein the powder supply groove 15 is in an inverted trapezoid shape, the bottom of the powder supply groove 15 is in an arc shape, the arc top is upward, and the arc bottom of the powder supply groove 15 is provided with a powder outlet 20 along the axial direction of the arc bottom; horizontal sliding blocks 10 are arranged at two ends of the top surface of the powder supply groove 15, the horizontal sliding blocks 10 are fixedly arranged on the top surface of the powder supply groove 15, and correspondingly, horizontal guide rails 11 are arranged in the horizontal sliding blocks 15 and movably connected with the horizontal guide rails; two ends of each horizontal guide rail 11 are fixed in the upper cylinder body 2, and when the powder spreading device works, the whole powder spreading device 3 moves along the horizontal guide rails 11 in the horizontal direction; and two ends of the air cylinder (23) are respectively connected with the powder spreading device (3) and the horizontal sliding block (10).
Two ends of the powder supply groove 15 are provided with brackets 17, and the shape of the brackets is the same as that of the powder supply groove 15; the powder paving roller 16 is arranged at the arc-shaped bottom of the powder supply groove 15, rotating shafts 22 are arranged at two ends of the powder paving roller, and the powder paving roller 16 is connected with the bracket 17 through the rotating shafts 22 at the two ends of the powder paving roller, so that the powder paving roller 16 and the powder supply groove 15 are in a connected state; the diameter of the powder paving roller 16 is the same as that of the arc-shaped bottom of the powder supply groove 15, and the powder paving roller and the powder supply groove are in clearance fit; the powder spreading roller 16 is connected with a power device 18; the powder spreading roller 16 is provided with a powder spreading channel 21 corresponding to the powder outlet 20 along the axial direction.
Two scraper supports 13 are respectively arranged on two sides of the powder supply groove 15 along the axial direction and are fixedly connected, and a support column is arranged on each scraper support 13; correspondingly, the scrapers 14 are symmetrically arranged on two sides of the powder supply groove 15 along the axial direction and are fixedly connected with the scraper bracket 13 through a strut; the height of the scraper 14 after fixing should be greater than the height of the dusting roller 16.
The size of the gap is 0.2 mm.
The telescopic structure 4 is 4 blocks of telescopic colloids, and is made of PVC materials to prevent fatigue wear in the working process.
The cross section of the telescopic structure 4 is rectangular, and the left end and the right end of each telescopic colloid are fixedly connected with the two telescopic colloids.
The height of the directional cylinder body 6 is higher than that of the lower cylinder body 5 and is positioned below the telescopic structure 4, and the slidable distance of the sliding block 8 is matched with the telescopic distance of the telescopic structure 4, namely, the lifting distance of the lower cylinder body 5 is smaller than the telescopic distance of the telescopic structure 4.
The rack 1 comprises an upper mounting plate, a lower mounting plate and a bracket; the support is composed of 4 upright posts and 2 symmetrical cross beams, and two ends of each upright post are fixedly connected with the upper mounting plate and the lower mounting plate in a bolt mode; the two ends of each beam are fixedly connected with the upright columns through welding, and the two ends of the directional guide rail 6 are fixedly connected with the lower mounting plate and the beams through bolts respectively.
The working mode of the invention is as follows:
during the operation, when printing one layer, the lower cylinder body descends one layer, the upper cylinder body is fixed, and the lower cylinder body is driven by the elastic telescopic structure to do lifting motion;
the controller controls the powder spreading device to move in a horizontal plane and controls the power device to rotate so as to drive the powder spreading roller to rotate
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a laser sintering make-up machine, includes frame (1), cylinder (23), horizontal guide rail (11), horizontal slider (10), cylinder body, directional cylinder body (6), screw-nut pair (7) and shop powder device (3), its characterized in that: the cylinder body comprises an upper cylinder body (2) and a lower cylinder body (5), the upper cylinder body and the lower cylinder body are fixedly connected with the telescopic structure (4), and the upper cylinder body and the lower cylinder body form a sealed cavity together;
the screw-nut pair (7) is positioned at the center of the bottom end outside the lower cylinder body (5) and is consistent with the cylinder body in the Z-axis direction;
guide rails (9) are arranged on two symmetrical walls in the directional cylinder body (6), and correspondingly, sliding blocks (8) are arranged on two symmetrical walls of the lower cylinder body (5); the sliding block (8) is matched with the guide rail (9);
the powder paving device (3) comprises a controller (12), a powder supply groove (15), a powder paving roller (16) and a scraper (14); the bottom of the powder supply groove (15) is arc-shaped, the arc top is upward, and the arc-shaped bottom of the powder supply groove (15) is provided with a powder outlet (20) along the axial direction; horizontal sliding blocks (10) are arranged at two ends of the upper plane of the powder supply groove (15), correspondingly, horizontal guide rails (11) are arranged in the horizontal sliding blocks (10), and the horizontal sliding blocks and the horizontal guide rails are movably connected; two ends of the horizontal guide rail (11) are fixed in the upper cylinder body (2), and two ends of the air cylinder (23) are respectively connected with the powder spreading device (3) and the horizontal sliding block (10); two ends of the powder supply groove (15) are fixedly provided with a bracket (17); the powder spreading roller (16) is arranged at the arc-shaped bottom of the powder supply groove (15), rotating shafts (22) are arranged at two ends of the powder spreading roller, and the powder spreading roller (16) is connected with the bracket (17) through the rotating shafts (22) at the two ends of the powder spreading roller; the diameter of the powder paving roller (16) is the same as that of the arc-shaped bottom of the powder supply groove (15), and the powder paving roller and the powder supply groove are in clearance fit; the powder spreading roller (16) is connected with a power device (18); the powder paving roller (16) is provided with a powder paving channel (21) corresponding to the powder outlet (20) along the axial direction;
two scraper supports (13) are respectively arranged on two sides of the powder supply groove (15) along the axial direction and are fixedly connected, and a support column is arranged on each scraper support (13); correspondingly, the scrapers (14) are symmetrically arranged at two sides of the powder supply groove (15) along the axial direction and are fixedly connected with the scraper bracket (13) through a strut; the height of the scraper after fixing is larger than the height of the powder spreading roller (16).
2. The laser sintering molding machine according to claim 1, characterized in that: the size of the gap is 0.1-0.2 mm.
3. The laser sintering molding machine according to claim 2, characterized in that: the telescopic structure (4) is colloid.
4. The laser sintering molding machine according to claim 3, characterized in that: the colloid is made of PVC material.
5. The laser sintering molding machine according to claim 3, characterized in that: the section of the telescopic structure (4) is rectangular or circular.
6. The laser sintering molding machine according to claim 3, characterized in that: the rack (1) comprises an upper mounting plate, a lower mounting plate and a bracket; the support is composed of 4 upright posts and 2 symmetrical cross beams, and two ends of each upright post are fixedly connected with the upper mounting plate and the lower mounting plate; and two ends of each beam are fixedly connected with the upright post, and two ends of the directional guide rail are respectively fixedly connected with the lower mounting plate and the beam.
7. The laser sintering molding machine according to claim 5, characterized in that: the height of the directional cylinder body (6) is higher than that of the lower cylinder body (5) and is positioned below the telescopic structure (4), and the sliding distance of the sliding block is adapted to the telescopic distance of the telescopic structure (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562439.1A CN110549603B (en) | 2018-06-04 | 2018-06-04 | Laser sintering forming machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562439.1A CN110549603B (en) | 2018-06-04 | 2018-06-04 | Laser sintering forming machine |
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| CN110549603A CN110549603A (en) | 2019-12-10 |
| CN110549603B true CN110549603B (en) | 2022-03-18 |
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| CN207154777U (en) * | 2017-08-22 | 2018-03-30 | 重庆大学 | The board-like powder conveying device of selective laser melting Adjustable device |
| CN107627607A (en) * | 2017-10-13 | 2018-01-26 | 芜湖天梦信息科技有限公司 | A kind of sedimentation workbench of 3D printer |
| CN107962776A (en) * | 2017-11-24 | 2018-04-27 | 安徽科元三维技术有限公司 | Multifunctional S L S printing product cleaning device |
| CN107867400A (en) * | 2017-12-19 | 2018-04-03 | 浙江大学 | The fog machine liquid case that a kind of automatic anti-earthquake swings |
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