CN110549612B - Laser sintering forming machine - Google Patents
Laser sintering forming machine Download PDFInfo
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- CN110549612B CN110549612B CN201810567386.2A CN201810567386A CN110549612B CN 110549612 B CN110549612 B CN 110549612B CN 201810567386 A CN201810567386 A CN 201810567386A CN 110549612 B CN110549612 B CN 110549612B
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- strickle
- guide rail
- lower cylinder
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- 238000000149 argon plasma sintering Methods 0.000 title claims description 18
- 239000000843 powder Substances 0.000 claims abstract description 113
- 238000003892 spreading Methods 0.000 claims abstract description 12
- 230000007480 spreading Effects 0.000 claims abstract description 12
- 238000007790 scraping Methods 0.000 claims description 9
- 239000000084 colloidal system Substances 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 abstract 1
- 230000018109 developmental process Effects 0.000 abstract 1
- 238000010146 3D printing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 241000500881 Lepisma Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005245 sintering 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
- B29C64/10—Processes of additive manufacturing
- B29C64/188—Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control
- B29C64/194—Processes of additive manufacturing involving additional operations performed on the added layers, e.g. smoothing, grinding or thickness control during lay-up
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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
-
- 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
- B29C64/214—Doctor blades
-
- 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
- B29C64/25—Housings, e.g. machine housings
-
- 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
- B29C64/30—Auxiliary operations or equipment
- B29C64/357—Recycling
-
- 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
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses a telescopic forming cylinder, which belongs to the field of additive manufacturing and comprises a cylinder body, a workbench, a spiral powder spreading device and a powder collecting box, wherein the cylinder body comprises an upper cylinder body and a lower cylinder body; the workbench is positioned inside the lower cylinder body; the outer part of the lower cylinder body is provided with a directional guide rail which supports the cylinder body and enables the lower cylinder body to do lifting motion by matching with the screw nut pair; the working table is provided with a powder outlet, and the spiral powder laying device comprises a horizontal strickling device and a powder supply device; the strickle device is the developments strickle, the powder supply device is helical structure. Compared with the prior art, the scheme adopted by the invention has the advantages that the powder outlet is formed in the workbench, so that the powder can be efficiently collected, and meanwhile, the problem of sealing and difficult powder removal can be completely solved; due to the adoption of the dynamic strickle, the strickle device can be prevented from being damaged; by adopting the powder supply mode of the spiral structure, the high-quality powder laying effect can be realized, and the powder laying efficiency can be improved.
Description
Technical Field
The invention relates to the field of additive manufacturing, in particular to a laser sintering forming machine.
Background
In the 3D printing technology, after the processing is finished, the powder on the workbench needs to be collected and processed, and the powder is pushed into a powder collecting box beside a forming chamber by a scraper in a general mode, so that the mode has the great problem of low efficiency; because the laser sintering has high requirements on the sealing conditions of the forming chamber, most of the existing 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, the current technologies cannot solve the problem of removing powder, and when multiple kinds of powder need to be printed in the same forming cylinder, it is important to remove the redundant powder in the forming cylinder.
In the laser sintering technology, the requirement on the part forming quality is high, the part forming quality is determined by the powder laying quality, if the powder laying quality is not high, the powder laying effect is not good, if the powder contains pores, the powder is not uniform, and the machined part has the defects of pores and the like. Therefore, powder spreading and leveling are very important in the laser sintering technique. In the prior art, a plurality of methods for spreading and leveling powder exist, but the implementation effect is not satisfactory, for example, after the powder is spread by a plurality of powder spreading devices, the powder is distributed on a workbench unevenly, and the leveling is difficult.
Disclosure of Invention
The invention aims to provide a laser sintering forming machine which can be used for conveniently and efficiently collecting powder, can completely solve the sealing problem and can solve the problems of difficult cleaning and the like caused by sealing.
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 4, a workbench 13, a screw-nut pair 8, an electromagnetic control valve 12, a spiral powder laying device 9 and a powder collecting box 7; the upper cylinder body and the lower cylinder body are connected through a telescopic structure 3 to form a closed space together;
the workbench 13 is positioned inside the lower cylinder body 4 and is fixedly connected with the lower cylinder body 4;
the screw-nut pair 8 is positioned at the center of the bottom end outside the lower cylinder 4 and is consistent with the cylinder Z-axis direction, the screw-nut pair 8 comprises a screw 14 and a nut pair 15, the nut pair 15 is controlled to rotate, the screw 14 is driven to rotate, and the lower cylinder 4 is controlled to do lifting movement;
the outside of the lower cylinder body 4 is provided with a directional guide rail 5 which supports the cylinder body and enables the lower cylinder body 4 to do lifting motion by matching with a screw nut pair 8; the directional guide rail 5 comprises a guide rail 32 and a sliding block 31, wherein the guide rail 32 is fixed on the lower mounting plate 16 of the frame 1, and correspondingly, the sliding block 31 is mounted on two symmetrical walls of the lower cylinder 4;
a powder outlet 17 is arranged on the workbench 13, the lower part of the powder outlet 17 is connected with the powder collecting box 7 through a powder outlet pipeline 6, the powder collecting box 7 is arranged outside the forming chamber and close to the powder outlet 17, an electromagnetic control valve 12 is arranged below the workbench, during work, the electromagnetic control valve 12 is controlled to be closed, the powder outlet pipeline 6 is in a closed state at the moment, powder cannot leak out, and after the processing is finished, the electromagnetic control valve 12 is controlled to be opened to collect the powder;
the spiral powder spreading device 9 comprises a scraping device 10 and a powder supply device 25; the strickle device 10 is a dynamic strickle, and the powder supply device 25 is of a spiral structure; the powder supply device 25 is connected with the horizontal guide rail 18 through the air cylinder 11, and the strickle device 10 is connected with the horizontal guide rail 18 through the air cylinder 11.
Further, the powder outlet 17 is circular or rectangular, and preferably, the powder outlet is circular.
Further, the strickle device 10 comprises a strickle groove 26, a strickle plate 27, a strut 28, a spring 29 and a resistance wire 24, and two ends of the cylinder 11 are respectively connected with the strickle device 26 and the horizontal guide rail 18; two struts 28 are arranged in the strickle groove 26, and the strickle plate 27 is connected 28 with the strickle groove 26 through the struts; mounting a spring 29 on the strut 28; the resistance wire 24 is arranged on the strike plate 27.
Further, the powder supply device 25 comprises a support plate 20, a first power device, a second power device, a spiral roller 22 and a powder supply sleeve 21, wherein an arc opening is formed in the powder supply sleeve 21 along the axial direction; the two ends of the cylinder 11 are respectively connected with the supporting plate 20 and the horizontal guide rail 18; the spiral roller 22 is arranged on the supporting plate 20 through rotating shafts at two ends of the spiral roller and is connected with the first power device 19, and a gap is formed between the outer edge of the spiral roller and the inner wall of the powder supply sleeve 21 and is 0.1-0.2 mm; the powder supply sleeve 21 is mounted on the support plate 20 through rotating shafts at two ends thereof and is connected with the second power device 23.
Further, the telescopic structure 3 is a rubber body, and preferably, the telescopic structure 3 comprises 4 pieces of telescopic rubber bodies, and is preferably made of PVC material.
Further, the cross section of the telescopic structure 3 is rectangular or circular, and preferably, the left end and the right end of each telescopic colloid are respectively and fixedly connected with the two telescopic colloids.
Further, the rack 7 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 12 are respectively fixedly connected with the lower mounting plate 6 and the beams.
Furthermore, the lower end of the directional guide rail 5 is fixed on the frame 1, the joint of the directional guide rail and the lower cylinder 4 is located below the telescopic structure 3, and the slidable distance of the directional guide rail 5 is adapted to the telescopic distance of the telescopic structure 3.
Compared with the prior art, the invention has the following advantages:
a laser sintering forming machine, because of using the dynamic slicker, can avoid the slicking device to damage; the powder supply mode of the spiral structure is adopted, the powder is uniformly distributed in the powder supply sleeve, and then the powder is uniformly spread on the workbench, so that the space of the spiral structure is proper, the high-quality powder spreading effect can be realized, and the powder spreading efficiency can be improved; a powder outlet is arranged on the workbench, the sintered powder is collected, and a collecting box is prevented from being added beside the forming chamber to increase the volume; 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 in addition, redundant powder can be removed.
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 an overall schematic view of embodiment 1.
Fig. 2 is a sectional view of a front view of embodiment 1.
FIG. 3 is a schematic view of a stage of example 1.
Fig. 4 is a schematic view of the powder laying apparatus of example 1.
Fig. 5 is a schematic view of the strickle device of example 1.
Fig. 6 is a schematic view of the spiral structure of example 1.
The corresponding part names indicated by the numbers in the figures:
1. the machine frame 2, the upper cylinder body 3, the telescopic structure 4, the lower cylinder body 5, the directional guide rail 6, the powder outlet pipeline 7, the powder collecting box 8, the screw rod and nut pair 9, the spiral powder spreading device 10, the scraping device 11, the air cylinder 12, the electromagnetic control valve 13, the workbench 14, the screw rod 15, the nut pair 16, the lower mounting plate 17, the powder outlet 18, the horizontal guide rail 19, the first power device 20, the support plate 21, the powder supply sleeve 22, the spiral roller 23, the second power device 24, the resistance wire 25, the powder supply device 26, the scraping groove 27, the scraping plate 28, the support 29, the spring 29, the powder feeding device 26, the powder supply device 26, the scraping groove 27, the scraping plate 28, the support 29, the powder discharging box, the powder collecting box, the screw rod and the screw powder spreading device 10
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 and 2, the laser sintering forming machine comprises a frame 1, an upper cylinder 2, a lower cylinder 4, a workbench 13, a screw-nut pair 8, an electromagnetic control valve 12, a spiral powder spreading device 9 and a powder collecting box 7.
In this embodiment, the upper and lower cylinders are fixedly connected in a jogged manner by the telescopic structure 3 to jointly form a closed space; the workbench 13 is located inside the lower cylinder 4 and is fixedly connected with the lower cylinder 4 in a welding mode.
The screw and nut pair 8 comprises a screw 14 and a nut pair 15, is located at the center of the bottom end outside the lower cylinder body 4 and is consistent with the Z-axis direction of the cylinder body, and controls the nut pair 15 to rotate so as to drive the screw 14 to rotate and further control the lower cylinder body 4 to do lifting motion.
The outside of the lower cylinder body 4 is provided with a directional guide rail 5 which supports the cylinder body and enables the lower cylinder body 4 to do lifting motion by matching with a screw nut pair 8; the directional guide 5 comprises a guide rail 32 and a sliding block 31, wherein the guide rail 32 is fixed on the lower mounting plate 16 of the frame 1 by a bolt connection mode, and correspondingly, the sliding block 31 is mounted on two symmetrical walls of the lower cylinder 4 by a bolt connection mode.
A powder outlet 17 is arranged on the workbench 13, and the lower part of the powder outlet 17 is connected with the powder collecting box 7 through a powder outlet pipeline 6 in an embedded mode; the powder collection bin 7 is disposed outside the molding chamber.
The spiral powder spreading device 9 comprises a scraping device 10 and a powder supply device 25; the strickle device 10 is a dynamic strickle, and the powder supply device 25 is a spiral structure.
The powder outlet 17 is circular, so that the collection of powder can be better controlled.
Two ends of the cylinder 11 are respectively fixedly connected with the strickle device 26 and the horizontal guide rail 18 in a bolt connection mode; two support posts 28 are arranged in the strickle groove 26 and are embedded in the strickle through corresponding support post holes on the strickle groove 26; the strickle 27 is connected with the strickle groove 26 through a support 28 in a jogged mode; a spring 29 is arranged on the support 28 and sleeved on the support 28; the resistance wire 24 is arranged on the scraper plate 27 and functions to preheat each layer of powder laid on the work table.
The powder supply sleeve 21 is provided with an arc opening along the axial direction; two ends of the cylinder 11 are respectively fixedly connected with the support plate 20 and the horizontal guide rail 18 in a bolt manner; the spiral roller 22 is fixed on the supporting plate 20 through rotating shafts at two ends of the spiral roller and is fixedly connected with the first power device 19 through a coupler, and a gap is formed between the outer edge of the spiral roller and the inner wall of the powder supply sleeve 21 and is 0.1 mm; the powder supply sleeve 21 is installed on the support plate 20 through rotating shafts at two ends of the powder supply sleeve, and is fixedly connected with the second power device 23 through a coupler.
The telescopic structure 3 is 4 telescopic colloids made of PVC materials.
The cross-section of the telescopic structure 3 is rectangular, and the left end and the right end of each telescopic colloid are fixedly connected with the two telescopic colloids respectively in an embedded mode.
The rack 7 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, and the two ends of the directional guide rail 12 are respectively fixedly connected with the lower mounting plate 6 and the beams.
Example 2:
the embodiment is different from embodiment 1 only in that, in order to meet different types of 3D printing requirements, the cross-sectional shape of the telescopic structure formed by the telescopic colloid is circular, and correspondingly, the upper and lower cylinder bodies are also circular forming cylinders, and when the telescopic structure is applied to the circular 3D printing forming cylinder, the processing efficiency can be improved to a great extent, and the equipment is simple.
The operation and other structures and connection modes of the present embodiment are the same as those of embodiment 1.
Example 3:
the present embodiment is different from embodiment 1 only in that, in order to meet different kinds of 3D printing requirements, the powder outlet is configured as a rectangle, and a powder outlet pipe matched with the rectangle is arranged below the powder outlet, and by such a design, powder can be better collected.
The operation and other structures and connection modes of the present embodiment are the same as those of embodiment 1.
A laser sintering forming machine is provided with a powder outlet on a workbench, and powder after sintering is collected, so that a collecting box is prevented from being added beside a forming chamber to increase the volume.
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 (11), horizontal guide (18), cylinder body, workstation (13), screw nut is vice (8), spiral powder paving device (9) and powder collecting box (7), its characterized in that: the cylinder body comprises an upper cylinder body (2) and a lower cylinder body (4), and the upper cylinder body and the lower cylinder body are connected through a telescopic structure (3); the two are fixedly connected with the telescopic structure (3) and form a sealed cavity together with the upper cylinder body and the lower cylinder body;
the workbench (13) is positioned inside the lower cylinder body (4) and is fixedly connected with the lower cylinder body (4);
the screw-nut pair (8) is positioned at the center of the bottom end outside the lower cylinder body (4) and is consistent with the cylinder body in the Z-axis direction;
a directional guide rail (5) which supports the cylinder body and enables the lower cylinder body (4) to do lifting motion by matching with a screw nut pair (8) is arranged outside the lower cylinder body (4);
a powder outlet (17) is formed in the workbench (13), the lower part of the powder outlet (17) is connected with the powder collecting box (7) through a powder outlet pipeline (6), and the powder collecting box (7) is arranged outside the forming chamber;
the spiral powder spreading device (9) comprises a scraping device (10) and a powder supply device (25); the strickle device (10) is a dynamic strickle, and the powder supply device (25) is of a spiral structure; the powder supply device (25) is connected with the horizontal guide rail (18) through the air cylinder (11), the strickle device (10) is connected with the horizontal guide rail (18) through the air cylinder (11),
the strickle device (10) comprises a strickle groove (26), a strickle plate (27), a strut (28), a spring (29) and a resistance wire (24), and two ends of the cylinder (11) are respectively connected with the strickle device (10) and the horizontal guide rail (18); two struts (28) are arranged in the strickle groove (26), and the strickle plate (27) is connected with the strickle groove (26) through the struts (28); mounting a spring (29) on the strut (28); the resistance wire (24) is arranged on the scraping plate (27),
the powder supply device (25) comprises a support plate (20), a first power device, a second power device, a spiral roller (22) and a powder supply sleeve (21), and an arc opening is formed in the powder supply sleeve (21) along the axial direction; two ends of the cylinder (11) are respectively connected with the supporting plate (20) and the horizontal guide rail (18); the spiral roller (22) is arranged on the supporting plate (20) through rotating shafts at two ends of the spiral roller and is connected with the first power device (19), and a gap is formed between the outer edge of the spiral roller and the inner wall of the powder supply sleeve (21) and is 0.1-0.2 mm; the powder supply sleeve (21) is arranged on the support plate (20) through rotating shafts at two ends of the powder supply sleeve and is connected with the second power device (23).
2. The laser sintering molding machine according to claim 1, characterized in that: the powder outlet (17) is round or rectangular.
3. The laser sintering molding machine according to claim 1, characterized in that: the telescopic structure (3) 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 1, characterized in that: the section of the telescopic structure (3) is rectangular or circular.
6. The laser sintering molding machine according to claim 1, 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; the two ends of each beam are fixedly connected with the upright columns, and the two ends of the directional guide rail (5) are respectively fixedly connected with the lower mounting plate (16) and the beams.
7. The laser sintering molding machine according to claim 1, characterized in that: the joint of the directional guide rail (5) and the lower cylinder body (4) is positioned below the telescopic structure (3), and the slidable distance of the directional guide rail (5) is adapted to the telescopic distance of the telescopic structure (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810567386.2A CN110549612B (en) | 2018-06-04 | 2018-06-04 | Laser sintering forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810567386.2A CN110549612B (en) | 2018-06-04 | 2018-06-04 | Laser sintering forming machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110549612A CN110549612A (en) | 2019-12-10 |
| CN110549612B true CN110549612B (en) | 2022-03-18 |
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| CN201810567386.2A Active CN110549612B (en) | 2018-06-04 | 2018-06-04 | Laser sintering forming machine |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625062A (en) * | 2015-03-03 | 2015-05-20 | 重庆大学 | Reciprocating powder laying device for selective laser melting |
| CN104959603A (en) * | 2015-07-15 | 2015-10-07 | 广东奥基德信机电有限公司 | System suitable for metal powder melting material increasing manufacturing |
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| 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 |
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| CN206140936U (en) * | 2016-10-10 | 2017-05-03 | 深圳市圆梦精密技术研究院 | Sealing device and three -dimensional inkjet printer |
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|---|---|---|---|---|
| CN104625062A (en) * | 2015-03-03 | 2015-05-20 | 重庆大学 | Reciprocating powder laying device for selective laser melting |
| CN104959603A (en) * | 2015-07-15 | 2015-10-07 | 广东奥基德信机电有限公司 | System suitable for metal powder melting material increasing manufacturing |
| CN206242497U (en) * | 2016-12-10 | 2017-06-13 | 硕威三维打印科技（上海）有限公司 | A kind of doctor blade device with heating scraper |
| 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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