CN115446332B - Powder spreading vehicle for laser selective melting equipment - Google Patents
Powder spreading vehicle for laser selective melting equipment Download PDFInfo
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- CN115446332B CN115446332B CN202211199622.2A CN202211199622A CN115446332B CN 115446332 B CN115446332 B CN 115446332B CN 202211199622 A CN202211199622 A CN 202211199622A CN 115446332 B CN115446332 B CN 115446332B
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- scraper
- powder storage
- storage box
- powder
- driving
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- 239000000843 powder Substances 0.000 title claims abstract description 232
- 230000007480 spreading Effects 0.000 title claims abstract description 27
- 238000003892 spreading Methods 0.000 title claims abstract description 27
- 238000002844 melting Methods 0.000 title claims abstract description 16
- 230000008018 melting Effects 0.000 title claims abstract description 16
- 238000003860 storage Methods 0.000 claims abstract description 144
- 238000007789 sealing Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000007599 discharging Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 abstract description 10
- 238000007639 printing Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005415 magnetization Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 3
- 230000002457 bidirectional effect Effects 0.000 description 7
- 239000006260 foam Substances 0.000 description 4
- 238000007790 scraping Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000012945 sealing adhesive Substances 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007306 turnover Effects 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
- B22F12/50—Means for feeding of material, e.g. heads
-
- 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]
-
- 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
- B22F12/67—Blades
-
- 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
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention discloses a powder spreading vehicle for laser selective melting equipment, which comprises a scraper rest, a scraper and a powder storage box, wherein the scraper is arranged on the bottom surface of the scraper rest; according to the powder spreading vehicle for the laser selective melting equipment, disclosed by the invention, the powder storage box is independently arranged on the side surface of the scraper rest, so that the tightness of the powder storage box is improved; the scraper is arranged at the bottom of the scraper rest, so that the separation of the scraper and the powder storage box is realized, the magnetization of printing materials is avoided, and the printing effect is effectively improved; the invention has simple integral structure, less contact between the printing material metal powder and the scraper shaft during use, good sealing performance and easy processing and manufacturing of the scraper during the powder carrying movement, effectively reduces the manufacturing cost and improves the integral economy.
Description
Technical Field
The invention belongs to the technical field of 3D printing equipment, and relates to a powder paving vehicle for laser selective melting equipment.
Background
For improving printing efficiency, the large-scale laser selective melting equipment often selects a bidirectional powder spreading scraper, and because the bidirectional powder spreading scraper needs to carry powder to move for first-pass powder spreading after receiving metal powder, the powder leakage hidden danger in the scraper in the powder spreading process exists in the traditional roller type powder discharging scraper and the impact plate type powder discharging scraper, so that the powder spreading surface quality is seriously influenced. Meanwhile, the roller type powder unloading scraper is easy to bring powder into magnetism due to repeated friction between the roller and the metal powder in the roller box, so that the printing effect of the metal powder is affected; in addition, as the scraper with the structure meets the relative sealing requirement if being processed, the required parts have higher materials and processing difficulty, and the manufacturing cost of the scraper is high.
In order to solve the problems, a powder paving vehicle with simple structure and good sealing performance is required to be designed.
Disclosure of Invention
In view of the above, the invention discloses a powder spreading vehicle for laser selective melting equipment, a powder storage box is arranged outside the side surface of a scraper frame, a scraper is arranged at the bottom of the scraper frame, the independent powder storage box has higher tightness, and the separation of the scraper and the powder storage box avoids the magnetization of printing materials and effectively improves the printing effect.
A shop's powder car for laser selective melting equipment, includes scraper frame, scraper and stores up the powder box, the scraper is installed in the bottom surface of scraper frame, store up the powder box and install in the scraper frame, store up and have the discharge opening that is used for spreading the powder on the powder box, the opening and closing of discharge opening controllable. In the technical scheme of the invention, the powder storage box can be arranged on the side surface of the scraper frame or on the top surface of the scraper frame, so long as the powder storage box and the scraper are respectively arranged at different positions of the scraper frame.
Further, the powder storage box is provided with a powder storage cavity for storing powder, and the powder storage cavity is communicated with the discharge opening.
Further, store up the powder box and install in the side of scraper frame, wherein, the side can be the front side of scraper frame, also can be the rear side of scraper frame, store up the powder box and be provided with the pivot along self length direction, scraper frame length direction's both ends are provided with the powder box supporting shoe that is used for installing the powder box that stores up respectively, the both ends of pivot correspond respectively and hinge in storing up the powder box supporting shoe, the discharge opening sets up in storing up one side that the powder box is close to the scraper frame and is located the bottom of storing up the powder chamber, the driving piece has stiff end and drive end, the stiff end is installed in the top of scraper frame, the drive end is connected with the upper portion of storing up the powder box, the pivot sets up in the position department between driving piece and discharge opening.
Further, the powder storage box is provided with a material receiving state and a material discharging state; in the receiving state, the upper part of the powder storage box is driven by the driving end of the driving piece to be far away from the scraper rest, and the powder storage box rotates around the rotating shaft and enables the discharging opening to be attached to the side face of the scraper rest; under the unloading state, the upper part of the powder storage box is driven by the driving end of the driving piece to be close to the scraper rest, and the powder storage box rotates around the rotating shaft along with the powder storage box and enables the unloading opening to be far away from the scraper rest. According to the invention, the powder storage box is driven to rotate around the rotating shaft by the driving piece, so that the opening and closing of the discharge opening are controlled by tightly attaching the discharge opening to or keeping away from the side surface of the scraper frame.
Further, the vertical section of the powder storage cavity is of a conical structure with a large upper part and a small lower part. The powder storage cavity adopts an inverted conical design with a small-angle steep slope, so that the metal powder can be rapidly discharged from the powder storage cavity.
Further, the scraper knife further comprises a sealing strip, wherein the sealing strip is arranged on the scraper knife rest and is positioned between the discharging opening and the scraper knife rest. The sealing strips are arranged, so that the problem that effective sealing cannot be formed between the scraper rest and the discharge opening is effectively solved, the overall sealing performance is greatly improved, the quantity of the sealing strips is integral multiple of the quantity of the powder storage boxes, namely, at least one sealing strip is arranged in one powder storage box, and the sealing performance of the powder storage boxes is guaranteed.
Further, two powder storage boxes are arranged, namely a front powder storage box arranged on the front side of the scraper and a rear powder storage box arranged on the rear side of the scraper.
Further, the driving piece has a plurality of, and a plurality of the driving piece is along storing up powder box length direction interval setting in scraping the knife rest, and part the driving piece is for installing in scraping the knife rest and being located and be used for driving the preceding powder box that stores up of preceding powder box position department storing up powder box, remaining the driving piece is for installing in scraping the knife rest and being located and be used for driving the back powder box that stores up the back powder box of back storing up powder box position department storing up. The number of the driving parts is determined according to the size, capacity and other conditions of the powder storage boxes, and different powder storage boxes are required to be provided with different numbers of driving parts.
Further, the upper portion of storing up the powder box still is provided with the elastic component that makes the discharge opening laminate inseparabler with the scraper frame side under receiving material state, the one end of elastic component is installed in the upper portion of storing up the powder box, and the other end is connected in the upper portion of scraper frame. The setting of elastic component is equivalent to additionally having exerted an outside thrust on the upper portion of storing up the powder box, according to lever principle, the discharge opening then can receive an inside thrust, so can make the discharge opening inseparabler with the side laminating of scraper frame, this design also is in order to improve the leakproofness of storing up the powder box.
Further, the scraper rack is further provided with two scraper racks and a scraper front hanging plate, the two scraper racks are respectively arranged at two ends of the length direction of the scraper rack, and the scraper front hanging plate is arranged on the scraper rack and is positioned at the outer side of the front powder storage box.
The invention has the beneficial effects that:
the invention discloses a powder spreading vehicle for laser selective melting equipment, wherein a powder storage box is independently arranged on the side surface of a scraper rest, so that the tightness of the powder storage box is improved; the scraper is arranged at the bottom of the scraper rest, so that the separation of the scraper and the powder storage box is realized, the magnetization of printing materials is avoided, and the printing effect is effectively improved; the invention has simple integral structure, less contact between the printing material metal powder and the scraper shaft during use, good sealing performance and easy processing and manufacturing of the scraper during the powder carrying movement, effectively reduces the manufacturing cost and improves the integral economy.
Drawings
FIG. 1 is a schematic view of an axial structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a left side view of the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 2;
FIG. 6 is a cross-sectional view B-B of FIG. 2;
FIG. 7 is a cross-sectional view of C-C of FIG. 2;
FIG. 8 is a sectional view of D-D of FIG. 3;
fig. 9 is a partial enlarged view at E in fig. 7.
Detailed Description
FIG. 1 is a schematic view of an axial structure of the present invention; FIG. 2 is a front view of the present invention; FIG. 3 is a top view of the present invention; FIG. 4 is a left side view of the present invention; FIG. 5 is a cross-sectional view A-A of FIG. 2; FIG. 6 is a cross-sectional view B-B of FIG. 2; FIG. 7 is a cross-sectional view of C-C of FIG. 2; FIG. 8 is a sectional view of D-D of FIG. 3; fig. 9 is a partial enlarged view at E in fig. 7. It should be noted that, in the description of the present specification, the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In this embodiment, the side far away from the scraper rest is the outer side, and if no special description is provided, the installation, connection, and the like mentioned in the embodiments of the present disclosure are all realized by a detachable connection manner such as a bolt connection, which is a method or means that can be understood by those skilled in the art, and will not be described herein again.
As shown in the figure, the invention discloses a powder spreading vehicle for laser selective melting equipment, which comprises a scraper rest 1, a scraper 11 and a powder storage box, wherein the scraper 11 is arranged on the bottom surface of the scraper rest 1 through a scraper mounting frame 12, the powder storage box is arranged on the scraper rest 1, a discharge opening for spreading powder is formed in the powder storage box, and the discharge opening can be controlled to be opened and closed.
In the embodiment, the top of the powder storage box is recessed inwards to form a powder storage cavity 10 communicated with the discharge opening, the vertical section of the powder storage cavity 10 is of a conical structure with a large upper part and a small lower part, and the powder storage cavity 10 adopts an inverted conical design with a small-angle steep slope to ensure that metal powder can be discharged from the powder storage cavity 10 quickly; the driving piece is flexible cylinder, and flexible cylinder has a stiff end and a drive end, and flexible cylinder's stiff end is installed in scraper frame 1's top, and flexible cylinder's drive end is provided with a spherical joint, spherical joint installs in storing up the powder box and is located the upper portion of storing up the powder box, and spherical joint's setting is more smooth and easy in order to let the driving piece when the rotation of drive storing up the powder box, and flexible cylinder stores up the switching of powder box control discharge opening through the drive.
In this embodiment, the powder storage box is mounted on the side surface of the doctor frame 1, and the powder storage box is provided with a rotating shaft along the length direction of the powder storage box, so that in this embodiment, in order to avoid the rotating shaft from affecting the powder storage and discharging of the powder storage cavity 10, and meanwhile, in consideration of the light weight design, the rotating shaft of this embodiment is a split type rotating shaft, that is, two end surfaces on two sides of the length direction of the powder storage box are respectively provided with a rotating shaft, the rotating shafts on two sides only need to be coaxially arranged, two ends of the length direction of the doctor frame 1 are respectively provided with a powder storage box supporting block for mounting the powder storage box, and two rotating shafts are respectively correspondingly hinged to supporting blocks on two ends of the powder storage box; the discharging opening is arranged on one side of the powder storage box, which is close to the scraper rest 1, and is positioned at the bottom of the powder storage cavity 10; the embodiment also comprises a sealing strip, wherein the sealing strip is an elastic foam sealing rubber strip, the area of the sealing strip is larger than that of the discharge opening so as to ensure the tightness of the sealing strip, and the sealing strip is arranged on the scraper frame 1 and is positioned between the discharge opening and the scraper frame 1; the sealing strips are arranged, so that the problem that effective sealing cannot be formed between the scraper rest 1 and the discharge opening is effectively solved, the overall sealing performance is greatly improved, the quantity of the sealing strips is an integral multiple of the quantity of the powder storage boxes, namely, at least one sealing strip is arranged in one powder storage box, and the sealing performance of the powder storage boxes is guaranteed. The discharge opening of this embodiment is designed as vertical incision, and it is convenient for it and sealing strip laminating.
In this embodiment, the upper portion of storing up the powder box still is provided with and makes the discharge opening in receiving under the material state with scrape knife rest 1 side laminating inseparabler elastic component 8, and elastic component 8 is compression spring, the one end of elastic component 8 is installed in the upper portion of storing up the powder box, and the other end is connected in the upper portion of scraping knife rest 1. The arrangement of the elastic piece 8 is equivalent to that an outward pushing force is additionally applied to the upper part of the powder storage box, and the discharge opening can receive an inward pushing force according to the lever principle, so that the discharge opening can be tightly attached to the side face of the scraper rest 1, and the design is also used for improving the tightness of the powder storage box.
In this embodiment, the opening and closing of the discharge opening of the present invention is achieved by driving the powder storage box to rotate around the rotating shaft by the driving member, so that the discharge opening is closely attached to or far away from the side surface of the scraper rest 1, and in the design of the present invention, the side surface of the scraper rest 1 is equivalent to a cover plate for closing the discharge opening. The powder storage box in the embodiment has a material receiving state and a material discharging state; in the material receiving state, the driving end of the telescopic cylinder is in an extension state, the upper part of the powder storage box is pushed outwards by a spherical joint on the driving end of the telescopic cylinder to be far away from the scraper rest 1, and the powder storage box rotates around a rotating shaft along with the powder storage box and enables the discharging opening to be attached to the side face of the scraper rest 1; under the state of unloading, the drive end of flexible cylinder is the shrink state, the upper portion of storing up the powder box is inwards pulled by the spherical joint on the flexible cylinder drive end and is close to scraper rest 1, and the storing up the powder box and revolute the rotation of rotating along with it and make the discharge opening keep away from scraper rest 1.
In this embodiment, two powder storage boxes are provided, which are a front powder storage box 2 arranged on the front side of the scraper rest 1 and a rear powder storage box 3 arranged on the rear side of the scraper rest 1. In order to achieve the purpose of light weight design, the powder storage box supporting blocks in the embodiment also adopt split type design, namely two powder storage box supporting blocks installed at two ends of the scraper frame 1 are designed into two front powder storage box supporting blocks 7A for supporting the front powder storage box 2 and two rear powder storage box supporting blocks 7B for supporting the rear powder storage box 3, and compared with the integral type design, the split type design has smaller volume and lighter weight. Two front powder storage box supporting blocks 7A are arranged at two ends of the scraper frame 1 in the length direction and are positioned at positions close to the front side of the scraper frame 1, and two rear powder storage box supporting blocks 7B are arranged at two ends of the scraper frame 1 in the length direction and are positioned at positions close to the rear side of the scraper frame 1; the rotating shaft 9A of the front powder storage box 2 is hinged with the front powder storage box supporting block 7A, and the rotating shaft 9B of the rear powder storage box 3 is hinged with the rear powder storage box supporting block 7B. Meanwhile, in order to make the rotation of the powder storage box smoother, in the embodiment, a deep groove ball bearing 13 is sleeved on the periphery of the rotating shaft, as shown in fig. 8; in this embodiment, since two powder storage boxes are provided, two sealing strips are also required, namely, a sealing strip 14A disposed on the doctor blade holder and close to one side of the front powder storage box 2, and a sealing strip 14B disposed on the doctor blade holder and close to one side of the rear powder storage box 3, where the sealing strip 14A is used to improve the tightness of the front powder storage box 2, and the sealing strip 14B is used to improve the tightness of the rear powder storage box 3.
In this embodiment, there are four driving members, wherein driving member 4A and driving member 4B are used to drive front powder storage box 2, and driving member 4C and driving member 4D are used to drive rear powder storage box 3; the driving piece 4A and the driving piece 4B are arranged on the scraper frame 1 and are positioned at a position close to the front powder storage box 2, and the driving piece 4A and the driving piece 4B are respectively arranged at two sides of the front powder storage box 2 in the length direction and are positioned at a position close to the end part; the driving piece 4C and the driving piece 4D are arranged on the scraper frame 1 and are positioned at positions close to the rear powder storage box 3, and the driving piece 4C and the driving piece 4D are respectively arranged at positions close to the end parts on two sides of the length direction of the rear powder storage box 3. Meanwhile, in this embodiment, four elastic members 8 are also provided, two of which are used for the front powder storage box 2, and the remaining two are used for the rear powder storage box 3, and two elastic members for the front powder storage box 2 are respectively and correspondingly provided at two ends of the front powder storage box 2 in the length direction, and two elastic members for the rear powder storage box 3 are respectively and correspondingly provided at two ends of the rear powder storage box 3 in the length direction.
In this embodiment, still be provided with scraper rack 6 and scraper front trailer 5 on the scraper rack 1, scraper rack 6 has two, two scraper rack 6 install respectively in scraper rack 1 length direction's both ends and lie in the top of scraper rack, install scraper front trailer 5 on preceding powder storage box supporting shoe 7A in this embodiment.
The specific use method of the bidirectional powder paving vehicle comprises the following steps:
a. all stretching cylinders are adjusted to be in an stretching state and set to be in an original position, at the moment, the bidirectional powder paving vehicle is operated to a printer bin internal connecting position for receiving materials, and quantitative metal powder is sequentially received by the rear powder storage box 3 and the front powder storage box 2;
b. after powder is received, the bidirectional powder spreading vehicle runs to a front powder spreading position, at the moment, the front powder storage box 2 stretches the cylinder to shrink to drive the front powder storage box 2 to turn over a certain angle by taking the rotating shaft 9A as a rotating center, and at the moment, the discharging opening of the front powder storage box 2 is separated from the foam sealing adhesive tape on the side wall of the main body of the scraper frame 1, so that the metal powder is discharged;
c. after the unloading is finished, the stretching cylinder of the front powder storage box 2 is restored to an extension state, the front powder storage box 2 is attached to the foam sealing rubber strip again under the action force of the compression spring, and at the moment, the bidirectional powder spreading vehicle carries the scraper 11 to continue to run, and forward powder spreading is started;
d. when the front powder spreading is completed, the scraper 11 moves to a rear powder spreading stop position, and at the moment, the rear powder storage box 3 is driven by the stretching cylinder of the rear powder storage box 3 to shrink, the rear powder storage box 3 is overturned for a certain angle by taking the rotating shaft 9B as a rotating center, and the metal powder in the rear powder storage box 3 is dismounted;
e. the unloading of the rear powder storage box 3 is completed, the rear powder storage box 3 stretches the cylinder to recover to be in an extension state, the rear powder storage box 3 is attached to the foam sealing adhesive tape under the action force of the compression spring, and then the bidirectional powder spreading vehicle carries the scraper 11 to spread powder in the backward direction after the operation starts;
the scraper 11 finishes the backward powder spreading, returns to the original material receiving position, and continuously repeats the actions of the steps a-e.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (6)
1. A shop's powder car for laser selective melting equipment, its characterized in that: the powder storage box is arranged on the scraper frame and is provided with a discharge opening for paving powder, and the discharge opening can be controlled to be opened and closed; the powder storage box is provided with a powder storage cavity for storing powder, and the powder storage cavity is communicated with the discharge opening;
the powder storage box is arranged on the side face of the scraper frame, a rotating shaft is arranged on the powder storage box along the length direction of the powder storage box, powder storage box supporting blocks for installing the powder storage box are respectively arranged at the two ends of the scraper frame in the length direction, the two ends of the rotating shaft are respectively hinged to the powder storage box supporting blocks in a corresponding mode, the discharging opening is formed in one side, close to the scraper frame, of the powder storage box and is located at the bottom of the powder storage cavity, the driving piece is provided with a fixed end and a driving end, the fixed end is arranged at the top of the scraper frame, the driving end is connected with the upper portion of the powder storage box, and the rotating shaft is arranged at the position between the driving piece and the discharging opening;
the powder storage box is provided with a material receiving state and a discharging state; in the receiving state, the upper part of the powder storage box is driven by the driving end of the driving piece to be far away from the scraper rest, and the powder storage box rotates around the rotating shaft and enables the discharging opening to be attached to the side face of the scraper rest; in the unloading state, the upper part of the powder storage box is driven by the driving end of the driving piece to be close to the scraper rest, and the powder storage box rotates around the rotating shaft and enables the unloading opening to be far away from the scraper rest;
the powder storage boxes are two, namely a front powder storage box arranged on the front side of the scraper and a rear powder storage box arranged on the rear side of the scraper.
2. The powder spreading vehicle for a laser selective melting apparatus of claim 1, wherein: the vertical section of the powder storage cavity is of a conical structure with a large upper part and a small lower part.
3. The powder spreading vehicle for a laser selective melting apparatus of claim 2, wherein: the scraper knife further comprises a sealing strip, wherein the sealing strip is arranged on the scraper knife rest and is positioned between the discharge opening and the scraper knife rest.
4. The powder spreading vehicle for a laser selective melting apparatus of claim 1, wherein: the powder storage device comprises a scraper frame, a plurality of driving pieces, a part of powder storage box driving pieces, a rear powder storage box driving piece, a front powder storage box driving piece and a rear powder storage box driving piece, wherein the driving pieces are arranged on the scraper frame at intervals in the length direction of the powder storage box, the part of the driving pieces are arranged on the scraper frame and are positioned at the position close to the front powder storage box and used for driving the front powder storage box, and the rest of the driving pieces are arranged on the scraper frame and are positioned at the position close to the rear powder storage box and used for driving the rear powder storage box.
5. The powder spreading vehicle for a laser selective melting apparatus of claim 1, wherein: the upper portion of storing up the powder box still is provided with the elastic component that makes the discharge opening laminate inseparabler with the scraper frame side under receiving material state, the one end of elastic component is installed in the upper portion of storing up the powder box, and the other end is connected in the upper portion of scraper frame.
6. The powder spreading vehicle for a laser selective melting apparatus of claim 1, wherein: the scraper rack is further provided with two scraper racks and two front scraper hanging plates, the two scraper racks are respectively arranged at two ends of the length direction of the scraper rack, and the front scraper hanging plates are arranged on the scraper rack and are positioned at the outer side of the front powder storage box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211199622.2A CN115446332B (en) | 2022-09-29 | 2022-09-29 | Powder spreading vehicle for laser selective melting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211199622.2A CN115446332B (en) | 2022-09-29 | 2022-09-29 | Powder spreading vehicle for laser selective melting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115446332A CN115446332A (en) | 2022-12-09 |
| CN115446332B true CN115446332B (en) | 2024-02-23 |
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| CN202211199622.2A Active CN115446332B (en) | 2022-09-29 | 2022-09-29 | Powder spreading vehicle for laser selective melting equipment |
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| CN115446332A (en) | 2022-12-09 |
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