阅读说明：本技术 一种用于3d打印机的风场装置及3d打印机 (A wind field device and 3D printer for 3D printer ) 是由 王森波 宋晓东 于峰彬 于 2021-09-10 设计创作，主要内容包括：本发明提供一种用于3D打印机的风场装置及3D打印机。风场装置包括：吹风装置,设置在3D打印机的腔室下端；进风管,固定在3D打印机的机架一侧且进风管的一端与吹风装置连接；下吸风装置,设置在腔室内部一侧下端；下出风管,固定在机架另一侧且下出风管的一端与下吸风装置连接；上吸风装置,设置在腔室内部一侧且位于下吸风装置的上端；两根上出风管,一端连接在上吸风装置的顶端两侧且另一端固定在机架的顶端；过滤芯,与下出风管的另一端、上出风管的另一端连接用于过滤烟尘残留物。根据本发明实施例的风场装置,通过设置上吸风装置与下吸风装置,切断了风场的混乱与漩涡,保证了对烟尘残留物的充分吸入,有效提高打印零件的致密度。(The invention provides an air field device for a 3D printer and the 3D printer. The wind field device includes: the blowing device is arranged at the lower end of the cavity of the 3D printer; the air inlet pipe is fixed on one side of the rack of the 3D printer, and one end of the air inlet pipe is connected with the blowing device; the lower air suction device is arranged at the lower end of one side in the cavity; the lower air outlet pipe is fixed on the other side of the rack, and one end of the lower air outlet pipe is connected with the lower air suction device; the upper air suction device is arranged on one side in the cavity and is positioned at the upper end of the lower air suction device; one end of each upper air outlet pipe is connected with two sides of the top end of the upper air suction device, and the other end of each upper air outlet pipe is fixed at the top end of the frame; and the filter element is connected with the other end of the lower air outlet pipe and the other end of the upper air outlet pipe and is used for filtering smoke dust residues. According to the wind field device provided by the embodiment of the invention, the upper air suction device and the lower air suction device are arranged, so that the disorder and the vortex of the wind field are cut off, the sufficient suction of smoke dust residues is ensured, and the density of printed parts is effectively improved.)

1. A wind field device for a 3D printer, comprising:

the blowing device is arranged at the lower end of the cavity of the 3D printer;

the air inlet pipe is fixed on one side of a rack of the 3D printer, and one end of the air inlet pipe is connected with the blowing device;

the lower air suction device is arranged at the lower end of one side in the cavity and is used for sucking smoke dust residues;

the lower air outlet pipe is fixed on the other side of the rack, and one end of the lower air outlet pipe is connected with the lower air suction device;

the upper air suction device is arranged on one side in the cavity and is positioned at the upper end of the lower air suction device for sucking smoke dust residues;

one ends of the two upper air outlet pipes are connected to two sides of the top end of the upper air suction device, and the other ends of the two upper air outlet pipes are fixed to the top end of the rack;

and the filter element is respectively connected with the other end of the lower air outlet pipe and the other end of the upper air outlet pipe and is used for filtering smoke dust residues.

2. The wind farm apparatus according to claim 1, wherein the upper outlet duct is made of stainless steel, and the upper outlet duct is butted with the filter element through a flange.

3. The wind field device of claim 1, wherein the blowing device is formed in an elongated shape, and the blowing holes are uniformly distributed on the surface of the blowing device.

4. The wind field device according to claim 3, wherein the air inlet pipe is formed as a U-shaped symmetrical pipe, one end of the U-shaped symmetrical pipe is formed with a first pipe and a second pipe, and the first pipe and the second pipe penetrate into one side of the frame and are connected with the blowing holes.

5. The wind field device according to claim 4, wherein a first fixing plate is fixed on one side of the frame, a plurality of blowing channels are arranged at the top ends of the first pipeline and the second pipeline, and the first pipeline and the second pipeline penetrate through the first fixing plate so that the blowing channels are connected with the blowing holes.

6. The wind field apparatus of claim 1, wherein the lower suction means comprises a first lower suction plate, and the first lower suction holes are uniformly distributed on the surface of the first lower suction plate.

7. The wind field device according to claim 6, wherein the lower wind suction device further comprises a second lower wind suction plate and a third lower wind suction plate, wherein the second lower wind suction plate is disposed between the first lower wind suction plate and the third lower wind suction plate, the second lower wind suction plate is provided with a second lower elongated wind suction hole, and the surface of the third lower wind suction plate is uniformly provided with rectangular third lower wind suction holes.

8. The wind field device according to claim 7, wherein the lower wind outlet pipe is formed as a Y-shaped symmetrical pipe, one end of the Y-shaped symmetrical pipe is formed as a third pipeline and a fourth pipeline, and the third pipeline and the fourth pipeline penetrate into the other side of the rack and are connected with the lower wind suction device.

9. The wind farm apparatus of claim 8, wherein a second fixing plate is fixed to the other side of the frame, and the third and fourth pipes pass through the second fixing plate and are connected to the lower suction device.

10. A3D printer, characterized by, including any one above-mentioned wind field device.

Technical Field

The invention relates to the technical field of 3D printing, in particular to an air field device for a 3D printer and the 3D printer comprising the same.

Background

Compared with the traditional material reduction manufacturing technology, the 3D printing technology is an advanced additive manufacturing technology for rapidly manufacturing parts, and the SLM3D printer is used for melting the manufactured parts which are cooled, condensed and stacked in layers by using metal powder under the heat of a laser beam. In the prior art, the confusion and the vortex of a printing wind field in a printer can cause unstable hidden troubles in the laser sintering process, thereby causing the defect of printing parts. Meanwhile, the existing wind field is simple in design structure, the air in the printing cavity can not be stably exchanged and flows, the flow velocity of the air flowing through the printing area is inconsistent, and the direction is disordered.

Disclosure of Invention

In view of this, the invention provides an air field device for a 3D printer, which can cut off the confusion and vortex of the air field, reduce the amount of metal powder sucked into the pipeline, and ensure sufficient absorption of smoke dust residues, thereby effectively improving the density of the printed parts.

In order to achieve the purpose, the invention adopts the following technical scheme:

the wind field device for the 3D printer according to the embodiment of the invention comprises:

the blowing device is arranged at the lower end of the cavity of the 3D printer;

the air inlet pipe is fixed on one side of a rack of the 3D printer, and one end of the air inlet pipe is connected with the blowing device;

the lower air suction device is arranged at the lower end of one side in the cavity and is used for sucking smoke dust residues;

the lower air outlet pipe is fixed on the other side of the rack, and one end of the lower air outlet pipe is connected with the lower air suction device;

the upper air suction device is arranged on one side in the cavity and is positioned at the upper end of the lower air suction device for sucking smoke dust residues;

one ends of the two upper air outlet pipes are connected to two sides of the top end of the upper air suction device, and the other ends of the two upper air outlet pipes are fixed to the top end of the rack;

and the filter element is respectively connected with the other end of the lower air outlet pipe and the other end of the upper air outlet pipe and is used for filtering smoke dust residues.

Furthermore, go up the tuber pipe and be stainless steel finished piece, just go up the tuber pipe through the flange with filter core butt joint.

Furthermore, the blowing device is formed into a long strip shape, and blowing holes are uniformly distributed on the surface of the blowing device.

Furthermore, the air inlet pipe is formed into a U-shaped symmetrical pipe, a first pipeline and a second pipeline are formed at one end of the U-shaped symmetrical pipe, and the first pipeline and the second pipeline penetrate into one side of the rack and are connected with the air blowing holes.

Furthermore, a first fixing plate is fixed on one side of the rack, a plurality of blowing channels are arranged at the top ends of the first pipeline and the second pipeline, and the first pipeline and the second pipeline penetrate through the first fixing plate so that the blowing channels are connected with the blowing holes.

Furthermore, the lower air suction device comprises a first lower air suction plate, and first lower air suction holes are uniformly distributed in the surface of the first lower air suction plate.

Furthermore, the lower air suction device further comprises a second lower air suction plate and a third lower air suction plate, wherein the second lower air suction plate is arranged between the first lower air suction plate and the third lower air suction plate, the upper end of the second lower air suction plate is provided with a second lower long strip-shaped air suction hole, and the surface of the third lower air suction plate is uniformly provided with third lower rectangular air suction holes.

Furthermore, the lower air outlet pipe is formed into a Y-shaped symmetrical pipe, one end of the Y-shaped symmetrical pipe is formed into a third pipeline and a fourth pipeline, and the third pipeline and the fourth pipeline penetrate into the other side of the rack and are connected with the lower air suction device.

Furthermore, a second fixing plate is fixed on the other side of the rack, and the third pipeline and the fourth pipeline penetrate through the second fixing plate and are connected with the lower air suction device.

The invention also provides a 3D printer which comprises the wind field device in any one of the embodiments.

The technical scheme of the invention at least has one of the following beneficial effects:

according to the wind field device provided by the embodiment of the invention, the upper air suction device and the lower air suction device are arranged, so that the disorder and the vortex of a wind field are cut off, the absorption of smoke dust residues with different flow rates at the upper end and the lower end of the cavity is ensured, the suction degree of the smoke dust residues can be greatly improved, and the density of a printed part is effectively improved;

furthermore, by arranging the lower air suction device comprising the first lower air suction plate, the second lower air suction plate and the third lower air suction plate, metal powder and smoke dust residues generated in the printing process can be separated, so that the probability that the metal powder is sucked into the filter element is reduced, the metal powder is recycled, and the cost is effectively reduced;

furthermore, the service life of the upper air outlet pipe can be greatly prolonged by arranging the upper air outlet pipes of the two stainless steel parts.

Drawings

FIG. 1 is a schematic structural diagram of a portion of a 3D printer including a wind field device according to an embodiment of the present invention;

FIG. 2 is a partial structural diagram of another perspective view of a 3D printer including a wind field device according to an embodiment of the present invention;

FIG. 3 is a schematic view of an embodiment of an air inlet duct;

FIG. 4 is a schematic structural diagram of a blowing device according to an embodiment of the present invention;

FIG. 5 is a schematic view of a blowing path according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a lower air suction device according to an embodiment of the present invention.

Reference numerals:

1. a blowing device; 2. an air inlet pipe; 3. a lower air suction device; 4. a lower air outlet pipe; 5. an upper air suction pipe; 6. an air outlet pipe is arranged; 7. a filter element; 8. a chamber; 9. a frame; 10. a flange; 11. an air blowing hole; 12. a first fixing plate; 13. a blowing channel; 14. a second fixing plate; 15. a lower air suction hole; 16. a first lower air suction plate; 17. a second lower air suction plate; 18. a third lower air suction plate; 19. a second lower suction hole; 20. and a third lower air suction hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

The following specifically describes an air field device for a 3D printer according to an embodiment of the present invention with reference to the accompanying drawings.

As shown in fig. 1 to 6, the wind field device for a 3D printer according to the embodiment of the present invention includes a blowing device 1, an air inlet pipe 2, a lower air suction device 3, a lower air outlet pipe 4, an upper air suction device 5, two upper air outlet pipes 6, and a filter element 7.

Blast apparatus 1 sets up 8 lower extremes in the cavity of 3D printer, and air-supply line 2 is fixed in frame 9 one side of 3D printer and the one end of air-supply line 2 is connected with blast apparatus 1.

The lower air suction device 3 is arranged at the lower end of one side in the cavity 8 and used for sucking smoke dust residues, the lower air outlet pipe 4 is fixed at the other side of the frame 9, and one end of the lower air outlet pipe 4 is connected with the lower air suction device 3.

The upper air suction device 5 is arranged on one side inside the cavity 8 and located at the upper end of the lower air suction device 3 and used for sucking smoke dust residues, and one ends of the two upper air outlet pipes 6 are connected to two sides of the top end of the upper air suction device 5, and the other ends of the two upper air outlet pipes are fixed to the top end of the frame 9.

The filter element 7 is respectively connected with the other end of the lower air outlet pipe 4 and the other end of the upper air outlet pipe 6 for filtering smoke dust residues.

That is, after the printing operation is completed, air enters from the other end of the air inlet duct 2, passes through one end of the air inlet duct 2, and is blown out to the inside of the chamber by the blowing device 1. The flow rates of the smoke residue at different locations are different due to the different gas flow rates in the chamber. The lower air suction device 3 can suck the smoke dust residues at the bottom inside the cavity 8, the upper air suction device 5 can suck the smoke dust residues at the upper part inside the cavity 8, and the smoke dust residues enter the filter element 7 through the lower air outlet pipe 4 and the two upper air outlet pipes 6 to be filtered and discharged.

Furthermore, go up out tuber pipe 6 and be stainless steel finished piece, and go up tuber pipe 6 and pass through flange 10 and filter element 7 butt joint, can promote the stability of going up tuber pipe 6 and connecting, prolonged the life of going up tuber pipe 6 self.

Further, the blowing device 1 is formed in a long strip shape, and the blowing holes 11 are uniformly distributed on the surface of the blowing device 1.

Further, as shown in fig. 3, the air inlet pipe 2 is formed as a U-shaped symmetrical pipe, and a first pipe and a second pipe are formed at one end of the U-shaped symmetrical pipe, and the first pipe and the second pipe penetrate into one side of the frame 9 to be connected with the blowing hole 11.

Further, as shown in fig. 2 and 5, a first fixing plate 12 is fixed on one side of the frame 9, a plurality of blowing channels 13 are disposed at the top ends of the first and second pipes, and the first and second pipes penetrate through the first fixing plate 12 so that the blowing channels 13 are connected to the blowing holes 11. Thus, the wind enters from the other end of the U-shaped symmetrical pipe and is blown out from the blowing device 1 to the inside of the chamber 8 through the top blowing channels 13 of the first pipeline and the second pipeline.

Further, the lower air suction device 3 includes a first lower air suction plate 16, and first lower air suction holes 15 are uniformly distributed on the surface of the first lower air suction plate.

Furthermore, the lower air suction device 3 further includes a second lower air suction plate 17 and a third lower air suction plate 18, wherein the second lower air suction plate 17 is disposed between the first lower air suction plate 16 and the third lower air suction plate 18, the upper end of the second lower air suction plate 17 is provided with a second lower air suction hole 19 in a strip shape, and the surface of the third lower air suction plate is uniformly distributed with third lower air suction holes 20 in a rectangular shape. Considering that the smoke residue and the like may flow upward, a certain inclination angle, for example, 30 degrees, may be provided between the first lower suction plate 16 and the second and third lower suction plates 17 and 18, so that the sufficiency of the absorption of the smoke residue can be ensured.

As shown in fig. 6, after the metal powder and the smoke dust residue inside the chamber 8 flow upward and enter the first lower air suction hole 15, the smoke dust residue can flow into the second lower air suction hole 19, and most of the metal powder can fall between the first lower air suction plate 16 and the second lower air suction plate 17, so that the metal powder and the smoke dust residue are separated. The smoke dust residue finally enters the third lower air suction hole 20 from the second lower air suction hole 19, and the remaining part of the metal powder falls between the second lower air suction plate 17 and the third lower air suction plate 18.

Furthermore, the lower air outlet pipe 4 is formed as a Y-shaped symmetrical pipe, one end of the Y-shaped symmetrical pipe is formed as a third pipeline and a fourth pipeline, and the third pipeline and the fourth pipeline penetrate into the other side of the rack 9 and are connected with the lower air suction device 3.

Furthermore, a second fixing plate is fixed on the other side of the frame 9, and the third and fourth pipes pass through the second fixing plate 14 and are connected with the downdraft device 3.

The invention also provides a 3D printer comprising the wind field device of any one of the embodiments.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.