CN110548867A - Laser 3D printer with telescopic cylinder body - Google Patents
Laser 3D printer with telescopic cylinder body Download PDFInfo
- Publication number
- CN110548867A CN110548867A CN201810562433.4A CN201810562433A CN110548867A CN 110548867 A CN110548867 A CN 110548867A CN 201810562433 A CN201810562433 A CN 201810562433A CN 110548867 A CN110548867 A CN 110548867A
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- China
- Prior art keywords
- powder
- cylinder body
- ball screw
- supply groove
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000843 powder Substances 0.000 claims abstract description 149
- 230000007480 spreading Effects 0.000 claims abstract description 33
- 238000003892 spreading Methods 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000007790 scraping Methods 0.000 claims description 46
- 238000005096 rolling process Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 238000007639 printing Methods 0.000 abstract description 21
- 238000010146 3D printing Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 5
- 230000000087 stabilizing effect Effects 0.000 description 5
- 238000000149 argon plasma sintering Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/60—Planarisation devices; Compression devices
- B22F12/63—Rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- 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
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
Abstract
The invention belongs to the field of 3D printing, and particularly discloses a laser 3D printer with a telescopic cylinder body. Mainly comprises a frame, a forming cylinder, a laser head and a powder spreading device. The forming cylinder is composed of a lower cylinder body and an upper cylinder body, the upper cylinder body is connected with the lower cylinder body through a telescopic structure, the upper cylinder body, the lower cylinder body and the telescopic structure form a sealed printing cavity, and printing work is carried out in the printing cavity. According to the 3D printer disclosed by the invention, the movement of the whole cylinder body is used for replacing the movement of the original printing platform, the matching of the printing platform and the cylinder body is reduced, and compared with the prior art, the 3D printer has the characteristics of simplicity in sealing, convenience in cleaning and the like. Meanwhile, the powder supplying and spreading device is simple in structure, can realize quantitative powder supply, prevents redundant powder from being accumulated, and improves the powder spreading quality.
Description
[ technical field ] A method for producing a semiconductor device
The invention belongs to the field of 3D printing, and particularly relates to a laser 3D printer with a telescopic cylinder body.
[ background of the invention ]
With the development of 3D printing technology, the research on laser sintering technology is more and more intensive. The laser sintering process of the parts comprises the steps that a certain amount of powder is spread on a workbench by a powder spreading device, the powder is flattened by a flattening device, then the laser head sinters the powder on the current layer, after the parts are machined, the powder is spread by a powder supplying and spreading device, the flattening sintering is continued, and the process is repeated until the whole printing work is completed.
In laser 3D printing based on metal powder materials, the printing chamber must be in a sealed state, and sealing must also be achieved between the forming cylinder and the printing platform surface to prevent powder from flowing into the cylinder, resulting in material waste and equipment damage. The sealing ring is arranged between the forming cylinder body and the printing platform surface in the prior art, so that the problem of sealing between the forming cylinder and the printing platform is solved, however, the printing powder is very fine, and the powder cannot be prevented from entering the sealing ring. Therefore, cleaning of the sealing gap between the respective apparatuses becomes very difficult. Meanwhile, the quantitative powder paving device in the prior art is complex in structure and needs to be matched with the powder leakage device to prevent redundant powder from being accumulated in the powder paving process, and the complexity of the structure is further increased.
[ summary of the invention ]
The invention aims to provide a laser 3D printer with a telescopic cylinder body, which solves the problems of sealing of a printer forming chamber and sealing between a forming cylinder body and a printing platform in the prior art, and is easy to clean; meanwhile, the powder spreading and leveling device can simultaneously realize quantitative powder supply and prevent redundant printing powder from being accumulated.
The laser head powder spreading machine comprises a forming cylinder, a laser head ball screw pair, a powder spreading device and a rack for mounting the forming cylinder, wherein the forming cylinder is arranged in the rack and comprises an upper cylinder body, a lower cylinder body and a telescopic structure, the upper cylinder body is fixedly connected to the upper part of the rack, the lower cylinder body is movably connected with the bottom of the rack through a vertical ball screw pair, the upper cylinder body is connected with the lower cylinder body through the telescopic structure, and the upper cylinder body and the lower cylinder body form a closed cavity through the telescopic structure.
The two opposite sides of the bottom of the rack are provided with stabilizing guide rails, the outer wall of the lower cylinder body and the position corresponding to the stabilizing guide rails are fixedly provided with sliding blocks, the sliding blocks and the stabilizing guide rails are connected in a sliding mode under the matching of the sliding blocks and the stabilizing guide rails, and the lower cylinder body moves up and down along the stabilizing guide rails.
Spread the powder device and include that horizontal ball is vice, spliced pole, confession powder groove, spread the powder roller and scrape the board, the spliced pole is four, the inside top of last cylinder body of the two liang of fixed mounting that correspond in top of spliced pole, the bottom fixed mounting of spliced pole has screw bearing supporting seat, install screw bearing on the screw bearing supporting seat. The horizontal ball screw pair is two pairs which are arranged in parallel on the horizontal plane. And the ball screw of the horizontal ball screw pair is arranged in the ball screw bearing. One end of the ball screw is connected with a direct current speed reducing motor through a coupler, the direct current speed reducing motor is fixedly connected with a screw bearing supporting seat through a motor mounting seat, and a screw nut is mounted on the ball screw.
The bottom of the powder supply groove is arc-shaped, the arc top is upward, and the arc-shaped bottom of the powder supply groove is provided with a powder leakage opening along the axial direction of the powder supply groove; the powder feeding device is characterized in that supporting plates are fixedly connected to two ends of the powder feeding groove, and one end, far away from the powder feeding groove, of each supporting plate is fixedly connected with a screw nut on the ball screw pair.
Spread the powder roller setting and be in supply the bottom in powder groove, the both ends of spreading the powder roller are provided with the roll pivot, the fixed pivot support piece that is provided with in bottom of backup pad, the roll pivot is rotated through pivot support piece and backup pad and is connected. The diameter of the powder paving roller is the same as that of the arc-shaped bottom of the powder supply groove, and under the action of the rotating shaft supporting piece, the powder paving roller is matched with the bottom of the powder supply groove and is in sealing connection with the powder supply groove. And the powder paving roller is provided with a powder paving channel corresponding to the powder leakage port along the axial direction. The powder paving machine is characterized in that a powder paving motor is installed on the upper portion of the supporting plate, a rolling rotating shaft at one end of the powder paving roller is connected with the powder paving motor through a belt wheel assembly, and the rolling rotating shaft drives the powder paving roller to rotate under the driving of the powder paving motor.
The both sides of the backup pad bottom at confession powder groove both ends all install the scraping plate draw-in groove, and the notch of each side scraping plate draw-in groove is to right, install the scraping plate in the scraping plate draw-in groove, the scraping plate draw-in groove sets up the both sides at shop's powder roller with the scraping plate.
In the forming cylinder, the length of the connecting column enables the scraping plate to be close to the printing platform by the distance of one layer of powder under the condition that the telescopic structure is not extended.
as an improvement, a sealing gasket is arranged between the arc-shaped bottom of the powder supply groove and the powder spreading roller.
In actual use: before the print job begins, extending structure does not extend, and spread the powder device and spread the powder on print platform and strickle, and the laser head is printed, accomplishes the one deck and prints the back, and ball drives down the cylinder body decline one deck, and extending structure is tensile, spreads the powder device once more and spread the powder, and the laser head is printed once more, repeats above-mentioned process until accomplishing and printing.
According to the 3D printer disclosed by the invention, the lifting of the original printing platform is replaced by the lifting of the whole cylinder body, the matching of the printing platform and the cylinder body is reduced, and meanwhile, the printing chamber is replaced by the whole cylinder body. The used powder spreading and leveling device is simple in structure, and can simultaneously realize quantitative powder supply and prevent redundant printing powder from being accumulated.
[ description of the drawings ]
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an external structural view of the present embodiment 1.
Fig. 2 is a sectional view taken along a-a of fig. 1.
Fig. 3 is a sectional view taken along the direction B-B of fig. 2.
Fig. 4 is an isometric view of the powdering device with portions broken away.
Fig. 5 is an isometric view of the powder spreading device.
fig. 6 is a cross-sectional view of the powder spreading device perpendicular to the axis.
Shown in the figure: 1. the powder feeding device comprises a rack 2, a forming cylinder 2-1, an upper cylinder 2-2, a lower cylinder 2-3, a telescopic structure 3, a vertical ball screw pair 4, a stable guide rail 4-1, a sliding block 5, a laser head 6, a connecting column 7, a ball screw 7-1, a ball screw 7-2, a ball screw 8, a screw bearing support seat 8-1, a screw bearing support seat 8-2, a screw bearing support seat 8-3, a screw bearing support seat 9, a powder paving device 9-1, a powder supply groove 9-11, a powder leakage opening 9-2, a powder paving roller 9-21, a powder paving channel 9-3, a powder paving motor 9-4a, a support plate 9-4b, a support plate 9-5, a powder paving channel, The device comprises rolling rotating shafts 9-5a, rolling rotating shafts 9-5b, rolling rotating shafts 9-6, rotating shaft supporting pieces 9-6a, rotating shaft supporting pieces 9-6b, rotating shaft supporting pieces 9-7, belt pulley assemblies 9-8, scraping plates 9-8a, scraping plates 9-8b, scraping plates 9-9, scraping plate clamping grooves 9-9a, scraping plate clamping grooves 9-9b, scraping plate clamping grooves 9-9c, scraping plate clamping grooves 9-9d, scraping plate clamping grooves 10, direct-current speed reduction motors 11, couplers 12, motor mounting seats 13, lead screw nuts 14, lead screw bearings 14-1, lead screw bearings 14-2, lead screw bearings 14-3, lead screw bearings 14-4 and lead screw bearings.
[ detailed description ] embodiments
The technical scheme of the invention is clearly and completely described in the following with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. Other embodiments, which can be derived by one of ordinary skill in the art from the embodiments of the present invention without creative efforts, are within the scope of the present invention.
In the description of the present invention, it is to be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly unless otherwise specifically indicated and limited. For example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two original parts can be directly connected, or connected through an intermediate medium, or internally communicated. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1: refer to fig. 1 to 6
A cylinder body retractable laser 3D printer comprises a rack 1, a forming cylinder 2, a laser head 5 and a powder spreading device 9, wherein the forming cylinder 2 is installed in the rack 1, the forming cylinder 2 comprises an upper cylinder body 2-1 and a lower cylinder body 2-2, the laser head 5 is installed at the top end of the inner portion of the upper cylinder body 2-1, and a printing platform 14 integrally formed with the lower cylinder body 2-2 is arranged at the bottom end of the inner portion of the lower cylinder body 2-2.
The upper cylinder body 2-1 is fixedly connected to the upper portion of the rack 1, the lower cylinder body 2-2 is movably connected with the bottom of the rack 1 through a vertical ball screw pair 3, and the lower cylinder body 2-2 is driven by the vertical ball screw pair 3 to move up and down in the rack 1. The upper cylinder body 2-1 is connected with the lower cylinder body 2-2 through a telescopic structure 2-3, and the upper cylinder body 2-1 and the lower cylinder body 2-2 form a closed cavity through the telescopic structure 2-3. A stable guide rail 4 is arranged on one side of the bottom of the rack, a sliding block 4-1 is fixedly arranged at the corresponding position of the lower cylinder body 2-2 and the stable guide rail 4, the sliding block 4-1 is in sliding connection with the stable guide rail 4, and the lower cylinder body 2-2 stably runs during lifting movement under the matching of the sliding block 4-1 and the stable guide rail 4.
The powder spreading device 9 comprises a horizontal ball screw pair, a connecting column 6, a powder supply groove 9-1, a powder spreading roller 9-2 and a scraping plate 9-8. The connecting columns 6 are respectively a connecting column 6-1, a connecting column 6-2, a connecting column 6-3 and a connecting column 6-4, and the top ends of the connecting columns (6) are fixedly arranged at the top end of the inner part of the upper cylinder body 2-1 in a pairwise correspondence manner. The bottom end of the connecting column 6-1 is fixedly provided with a screw bearing supporting seat 8-1, the bottom end of the connecting column 6-2 is fixedly provided with a screw bearing supporting seat 8-2, the bottom end of the connecting column 6-3 is fixedly provided with a screw bearing supporting seat 8-3, and the bottom end of the connecting column 6-4 is fixedly provided with a screw bearing supporting seat 8-4. A screw bearing 14-1 is arranged on the screw bearing supporting seat 8-1, a screw bearing 14-2 is arranged on the screw bearing supporting seat 8-2, a screw bearing 14-3 is arranged on the screw bearing supporting seat 8-3, and a screw bearing 14-4 is arranged on the screw bearing supporting seat 8-4. One end of a ball screw 7-1 of the first horizontal ball screw pair is arranged in a ball screw bearing 14-1, and the other end of the ball screw 7-1 of the first horizontal ball screw pair is arranged in the other opposite ball screw bearing 14-2; one end of the ball screw 7-2 of the second horizontal ball screw pair is mounted in the ball screw bearing 14-4, and the other end is mounted in the opposite ball screw bearing 14-3. One end of the ball screw 7-1 is connected with a direct current speed reducing motor 10-1 through a coupler 11-1, and the direct current speed reducing motor 10-1 is fixedly connected with a screw bearing supporting seat 8-2 through a motor mounting seat 12-1; one end of a ball screw 7-2 is connected with a direct current speed reducing motor 10-2 through a coupler 11-2, the direct current speed reducing motor 10-2 is fixedly connected with a screw bearing support seat 8-3 through a motor mounting seat 12-2, and two ball screw pairs are arranged at the bottom end of a connecting column 6 in parallel. A screw nut 13-1 is arranged on the ball screw 7-1; the ball screw 7-2 is provided with a screw nut 13-2. The powder spreading device 9 is arranged between the screw nut 13-1 and the screw nut 13-2, and the powder spreading device 9 can horizontally move on the printing platform along the ball screw 7-1 and the ball screw 7-2 under the driving of the screw nut 13-1 and the screw nut 13-2 which are parallel to each other.
The powder spreading device 9 comprises a powder supply groove 9-1, a powder spreading roller 9-2 and a scraping plate 9-8. The cross section of the powder supply groove 9-1 is inverted trapezoid, the bottom of the powder supply groove 9-1 is arc-shaped, and the arc top is upward. Two ends of the powder supply groove 9-1 are provided with a supporting plate 9-4a and a supporting plate 9-4b, one end of the supporting plate 9-4a far away from the powder supply groove 9-1 is fixedly connected with the screw nut 13-1, and one end of the supporting plate 9-4b far away from the powder supply groove 9-1 is fixedly connected with the screw nut 13-2. The upper part of the supporting plate 9-4b is provided with a powder spreading motor 9-3, the bottom of the supporting plate 9-4a is provided with a rotating shaft supporting piece 9-6a, and the bottom of the supporting plate 9-4b is provided with a rotating shaft supporting piece 9-5 b; one side of the bottom of the supporting plate 9-4a is provided with a scraping plate clamping groove 9-9a, the other side is provided with a scraping plate clamping groove 9-9b, one side of the bottom of the supporting plate 9-4b is provided with a scraping plate clamping groove 9-9c, and the other side is provided with a scraping plate clamping groove 9-9 d. The notches of the scraping plate clamping grooves 9-9a and the scraping plate clamping grooves 9-9b are opposite, the notches of the scraping plate clamping grooves 9-9c and the scraping plate clamping grooves 9-9d are opposite, one end of the scraping plate 9-8a is installed in the scraping plate clamping grooves 9-9a, the other end of the scraping plate 9-8a is installed in the scraping plate clamping grooves 9-9c, one end of the scraping plate 9-8b is installed in the scraping plate clamping grooves 9-9b, and the other end of the scraping plate 9-8b is installed in the scraping plate clamping grooves 9-9 d. The bottom of the powder supply groove 9-1 is provided with a rectangular powder leakage opening 9-11.
The scraping plate 9-8a can move up and down in the scraping plate slot 9-9a and the scraping plate 9-9c to adjust the height of the plate 9-8a, and the scraping plate 9-8b can move up and down in the scraping plate slot 9-9b and the scraping plate 9-9d to adjust the height of the plate 9-8 b.
One end of the powder spreading roller 9-2 is fixedly provided with a rolling rotating shaft 9-5a, the other end is provided with a rolling rotating shaft 9-5b, the rolling rotating shaft 9-5a is arranged in a rotating shaft supporting piece 9-6a and is rotationally connected with the rotating shaft supporting piece 9-6a, and the rolling rotating shaft 9-5b is arranged in a rotating shaft supporting piece 9-6b and is rotationally connected with the rotating shaft supporting piece 9-6 b. One end of the rolling rotating shaft 9-5b, which extends out of the rotating shaft supporting piece 9-6b, is connected with the powder paving motor 9-3 through the belt wheel assembly 9-7, and the powder paving motor 9-3 drives the rolling rotating shaft 9-5a and the rolling rotating shaft 9-5b to rotate through the belt wheel assembly 9-7, so as to drive the powder paving roller 9-2 to rotate. The powder spreading roller 9-2 is provided with a powder spreading channel 9-21, and the powder spreading channel 9-21 extends from the cylindrical surface at one side of the powder spreading roller 9-2 to the cylindrical surface at the other side. The diameter of the powder paving roller 9-2 is the same as that of the arc-shaped bottom of the powder supply groove 9-1, the powder paving roller 9-2 is hermetically connected with the arc-shaped bottom of the powder supply groove 9-1 under the action of the rotary supporting piece 9-6a and the rotary supporting piece 9-6b, and the powder paving roller 9-2 can rotate relative to the bottom of the powder supply groove 9-2.
In the process that the powder paving roller 9-2 rotates relative to the bottom of the powder supply groove 9-1, the powder paving channel 9-21 is directly opposite to the powder leakage port 9-11, so that powder is paved from the powder leakage port 9-11 through the powder paving channel 9-21, or a part of the powder paving channel 9-21 is opposite to the powder leakage port 9-11, the size of the opening of the powder leakage port 9-11 is changed, and the powder leakage amount of the powder leakage port 9-11 in unit time is changed.
In the preferred scheme of the embodiment, a sealing gasket is arranged between the circular arc-shaped bottom of the powder supply groove 9-1 and the powder paving roller 9-2.
The above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. The present invention is not limited to the precise arrangements described above and illustrated in the drawings, and it is not intended that the specific embodiments of the present invention be limited to the specific details set forth herein. Various changes and modifications to the invention, which will be apparent to those skilled in the art, can be made without departing from the spirit of the invention, and are intended to be within the scope of the invention.
Claims (2)
1. A laser 3D printer with a telescopic cylinder body comprises a forming cylinder (2), a ball screw (3), a laser head (5) and a powder spreading device (9);
the method is characterized in that: the laser head forming machine further comprises a rack (1) used for mounting the forming cylinder (2), the forming cylinder (2) is arranged in the rack (1), the forming cylinder (2) comprises an upper cylinder body (2-1), a lower cylinder body (2-2) and a telescopic structure (2-3), and the laser head (5) is mounted at the top end of the inner part of the upper cylinder body (2-1);
the upper cylinder body (2-1) is fixedly connected to the upper part of the rack (1), the lower cylinder body (2-2) is movably connected with the bottom of the rack (1) through a vertical ball screw pair (3), the upper cylinder body (2-1) is connected with the lower cylinder body (2-2) through a telescopic structure (2-3), and the upper cylinder body (2-1) and the lower cylinder body (2-2) form a closed cavity through the telescopic structure (2-3); the two opposite sides of the bottom of the rack (1) are provided with stable guide rails (4), the outer wall of the lower cylinder body (2-2) and the positions corresponding to the stable guide rails (4) are fixedly provided with sliding blocks (4-1), and the sliding blocks (4-1) are connected with the stable guide rails (4) in a sliding manner;
The powder paving device (9) comprises horizontal ball screws (3), connecting columns (6), four powder supply grooves (9-1), powder paving rollers (9-2) and scraping plates (9-8), the top ends of the connecting columns (6) are fixedly mounted at the top ends of the inner parts of the upper cylinder bodies (2-1) in a pairwise corresponding mode, screw bearing supporting seats (8) are fixedly mounted at the bottom ends of the connecting columns (6), and screw bearings (14) are mounted on the screw bearing supporting seats (8); the horizontal ball screw pair is two, and a ball screw (7) of the horizontal ball screw pair is arranged in the ball screw bearing (14); one end of the ball screw (7) is connected with a direct current speed reducing motor (10) through a coupler (11), and the direct current speed reducing motor (10) is fixedly connected with a screw bearing supporting seat (8) through a motor mounting seat (12); a screw nut (13) is arranged on the ball screw (7);
The bottom of the powder supply groove (9-1) is arc-shaped, the arc top is upward, and the arc-shaped bottom of the powder supply groove (9-1) is provided with a powder leakage opening (9-11) along the axial direction of the powder supply groove (9-1); both ends of the powder supply groove (9-1) are fixedly connected with supporting plates (9-4), and one end, far away from the powder supply groove (9-1), of each supporting plate (9-4) is fixedly connected with a screw nut (13) on the ball screw pair;
The powder paving roller (9-2) is arranged at the bottom of the powder supply groove (9-1), and rolling rotating shafts (9-5) are arranged at two ends of the powder paving roller (9-2); a rotating shaft supporting piece (9-6) is fixedly arranged at the bottom of the supporting plate (9-4), and the rolling rotating shaft (9-5) is rotatably connected with the supporting plate (9-4) through the rotating shaft supporting piece (9-6); the diameter of the powder paving roller (9-2) is the same as that of the arc-shaped bottom of the powder supply groove (9-1), and under the action of the rotating shaft supporting piece (9-6), the powder paving roller (9-2) is matched with the bottom of the powder supply groove (9-1) and is in sealing connection with the bottom; the powder spreading roller (9-2) is provided with a powder spreading channel (9-21) corresponding to the powder leakage port (9-11) along the axial direction; a powder paving motor (9-3) is installed on the upper portion of the supporting plate (9-4), a rolling rotating shaft (9-5) at one end of the powder paving roller (9-2) is connected with the powder paving motor (9-3) through a belt wheel assembly (9-7), and the rolling rotating shaft (9-5) drives the powder paving roller (9-2) to rotate under the driving of the powder paving motor (9-3);
scraping plate clamping grooves (9-9) are arranged on two sides of the bottoms of the supporting plates (9-4) at two ends of the powder supply groove (9-1), notches of the scraping plate clamping grooves (9-9) on each side face to face, scraping plates (9-8) are arranged in the scraping plate clamping grooves (9-9), and the scraping plate clamping grooves (9-9) and the scraping plates (9-8) are arranged on two sides of the powder spreading roller (9-2).
2. A powder spreading device with adjustable powder spreading amount according to claim 1, wherein: a sealing gasket is arranged between the arc-shaped bottom of the powder supply groove (9-1) and the powder spreading roller (9-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562433.4A CN110548867B (en) | 2018-06-04 | 2018-06-04 | Laser 3D printer with telescopic cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810562433.4A CN110548867B (en) | 2018-06-04 | 2018-06-04 | Laser 3D printer with telescopic cylinder body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110548867A true CN110548867A (en) | 2019-12-10 |
| CN110548867B CN110548867B (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810562433.4A Active CN110548867B (en) | 2018-06-04 | 2018-06-04 | Laser 3D printer with telescopic cylinder body |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112677482A (en) * | 2020-12-11 | 2021-04-20 | 大族激光科技产业集团股份有限公司 | 3D printing device and powder laying method |
| CN112974855A (en) * | 2021-02-07 | 2021-06-18 | 佛山市佛威精密机器有限公司 | Powder feeding device for SLM type metal 3D printer |
| CN114393824A (en) * | 2022-01-13 | 2022-04-26 | 南宁三帝科技有限公司 | Large-scale 3D printer |
| CN115647394A (en) * | 2022-12-12 | 2023-01-31 | 苏州倍丰智能科技有限公司 | Selective laser melting forming equipment capable of realizing continuous production |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN115647394A (en) * | 2022-12-12 | 2023-01-31 | 苏州倍丰智能科技有限公司 | Selective laser melting forming equipment capable of realizing continuous production |
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