CN115138875A - Metal 3D printing apparatus follows wind field system - Google Patents

Abstract

The utility model provides a metal 3D printing apparatus follows wind field system, includes forming station, leg, the piece of blowing and receive the wind piece, the forming station is used for bearing and prints the finished piece, the leg covers the forming station, the forming station surrounds with the leg and forms the cabin, the cabin is used for acceping and prints the finished piece, the piece of blowing is located one side of leg, the piece of blowing includes first pars contractilis, first pars contractilis is equipped with the mouth of blowing, receive the wind piece and locate the leg and with the relative one side of the piece of blowing, receive the wind piece and include second pars contractilis, second pars contractilis is equipped with receives the wind mouth, first pars contractilis and the second pars contractilis can stretch out and draw the mouth of blowing and receive the wind mouth and be close to and print the finished piece, the piece of blowing blows to printing the finished piece and blow in order to take away the smoke and dust, receive the wind piece and absorb the smoke and dust through receiving. The metal 3D printing equipment follows the wind field system to realize that the wind field smoothly takes away particles in the cabin, and further improves the forming quality.

Description

Metal 3D printing equipment follows wind farm system

technical field

The present application relates to the field of 3D printing, in particular to a metal 3D printing device following a wind field system.

Background technique

At present, in the process of laser metal 3D printing, the metal powder will generate a lot of soot after absorbing the laser energy, and the soot will partially gather on the surface of the powder bed, and may even reach the laser window at the top of the molding chamber. When this happens, the soot and the laser Interactions can lead to refraction and absorption of the laser beam, and thus to reduced laser power reaching the powder bed surface and distortion of the beam shape.

Therefore, it is necessary to design a wind field in the molding cabin to smoothly take away the smoke and dust through the wind field. The optimization of the wind field is difficult and there are many interference factors, such as the inconsistent quality of the printing area caused by powder blowing and powder falling. Therefore, the quality of the wind field directly affects the quality of the parts, especially the wind field in the large-scale molding range plays a decisive factor in the quality of the printed parts. However, in the current wind field in large-scale equipment, the particles can be smoothly taken away in the state of small-scale printing in the device, but it is almost impossible to realize the smooth removal of particles in the state of large-scale and long-distance printing, resulting in poor large-scale molding quality. The problem.

SUMMARY OF THE INVENTION

In view of this, it is necessary to provide a metal 3D printing device that can improve the molding quality to follow the wind field system.

An embodiment of the present application provides a metal 3D printing device following a wind field system, including a forming table, a surrounding wall, a blower, and a wind receiver. The build table is used to carry the printed parts. A surrounding wall covers the forming table, and the forming table and the surrounding wall surround to form a cabin, and the cabin is used for accommodating the printed product. The blowing element is arranged on one side of the surrounding wall, and the blowing element includes a first telescopic portion, and the first telescopic portion is provided with a blowing port. The wind collecting piece is arranged on the opposite side of the surrounding wall and the blowing piece, the wind collecting piece includes a second telescopic part, and the second telescopic part is provided with an air collecting opening. The first telescopic part and the second telescopic part can be expanded and contracted to make the air outlet and the air intake close to the printed part, and the air blower blows air to the printed part through the air outlet In order to take away the smoke and dust, the air collecting member absorbs the smoke and dust through the air collecting port.

In some embodiments, the first retractable portion and the second retractable portion are retractable along a first direction, and the first direction is the direction in which the blower points to the air receiver, or the air receiver point in the direction of the blower.

In some embodiments, the air outlet and the air receiver are disposed opposite to each other along the first direction, so that the wind direction is the direction in which the blower points to the air receiver.

In some embodiments, the telescopic distance ranges of the first telescopic portion and the second telescopic portion are both less than or equal to 1/2 of the length of the forming table.

In some embodiments, the blowing element includes a plurality of the first telescopic parts, the air collecting element includes a plurality of the second telescopic parts, and each of the first telescopic parts corresponds to one of the second telescopic parts The telescopic part corresponds to different parts of the printed part.

In some embodiments, the metal 3D printing device following the wind farm system further includes a powder spreading pipe, and the powder spreading pipe can sweep the forming table after being moved, and is used for spreading powder on the forming table to form all the materials. Printed artifact.

In some embodiments, the moving direction of the powder spreading pipe is perpendicular to the first direction.

In some embodiments, the metal 3D printing device following the wind farm system further includes a controller, the controller is communicatively connected to the first telescopic part and the second telescopic part, and the controller is used for printing In the process of forming the part, the expansion and contraction of the first telescopic part and the second telescopic part are controlled according to the size change of the printed part, so that the first telescopic part and the second telescopic part can be expanded and contracted according to the printing Dimensional changes of the article approach or move away from the printed article in real time.

In some embodiments, after the first retractable part and the second retractable part are retracted, the air outlet and the air intake can be flush with the inner surface of the surrounding wall, so as to maximize the molding table area of use.

In some embodiments, the metal 3D printing apparatus following the wind field system further includes a laser for emitting a laser to the powder of the forming station to solidify the powder to form the printed article.

The above-mentioned metal 3D printing equipment follows the wind field system to expand and contract through the first telescopic part and the second telescopic part until the air outlet and the air intake are close to the printed part, and then blow air to the printed part through the air outlet to take away the smoke and the air intake and absorb it at the same time The smoke and dust realizes the adjustable distance between the air outlet and the air intake, thereby effectively reducing the scope of the wind field required for the actual printing of the molding table, and realizing the purpose of the wind field to smoothly take away the particles in the cabin, thereby improving the molding quality.

Description of drawings

FIG. 1 is a schematic structural diagram of a metal 3D printing device following a wind farm system in an embodiment of the present application.

FIG. 2 is a schematic structural diagram of another state of the metal 3D printing device following the wind farm system in FIG. 1 .

FIG. 3 is a schematic structural diagram of another state of the metal 3D printing device following the wind farm system in FIG. 1 .

FIG. 4 is a schematic structural diagram of a metal 3D printing device following a wind field system in another embodiment.

Description of main component symbols

Metal 3D printing equipment follows wind farm system 100

Print Artifacts 200

Forming table 100a

Cabin 100b

hair dryer 10

The first telescopic part 11

wind catcher 20

Second telescopic part 21

Powder pipe 30

Detailed ways

The technical solutions of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all of the embodiments.

It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or an intervening component may also exist. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may also be an intervening component. When a component is said to be "set on" another component, it may be located directly on the other component or there may also be an intervening component. The terms "vertical", "horizontal", "left", "right" and similar expressions are used herein for the purpose of illustration only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the present application are for the purpose of describing particular embodiments only, and are not intended to limit the present application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

Referring to FIG. 1 , an embodiment of the present application provides a metal 3D printing device following a wind farm system 100 , including a forming table 100 a , a surrounding wall, a blower 10 and a wind receiver 20 . The forming table 100a is used to carry the printed product 200 during printing. The surrounding wall is used to cover the forming table 100a, and the forming table 100a and the surrounding wall form a cabin 100b. The chamber 100b is used to provide a closed space for forming the printed part 200 during printing. The blower 10 is arranged on one side of the surrounding wall. The blower 10 includes a first telescopic portion 11 . The first telescopic portion 11 is provided with a blowing port, and the blowing port communicates with the blower 10 and the cabin 100b. The blower 10 is used to blow air into the cabin 100b through the blower opening. The wind collecting member 20 is arranged on the side of the surrounding wall opposite to the blowing member 10 . The wind collecting member 20 includes a second telescopic portion 21 . The second telescopic portion 21 is provided with an air intake, and the air intake communicates with the air intake member 20 and the cabin 100b. The air collecting member 20 is used for drawing air from the cabin 100b through the air collecting port. As an exemplary example, in one embodiment, the forming method of the metal 3D printing device following the wind farm system 100 is metal powder laser 3D printing. In other embodiments, the metal 3D printing device following the wind farm system 100 may also be formed for other forms. way of 3D printing.

The first telescopic portion 11 can drive the air outlet to telescopically move toward or away from the air collecting member 20 . The second telescopic portion 21 can drive the air receiving port to telescopically move toward or away from the blower 10 . After the first telescopic part 11 and the second telescopic part 21 are telescopically moved, the air outlet and the air intake are used to make the air outlet and the air intake close to the printing part 200 being printed on the forming table 100a from both sides respectively. 200 blows air to take away the smoke and dust generated during the printing process, and the blowing direction is in the direction of the air collecting member 20, and the air collecting port absorbs the smoke and dust floating on the face, so that the smoke and dust particles will not gather on the forming table 100a and the printing part 200. The surface of the laser will not reach the laser window at the top of the cabin 100b, thereby effectively removing the smoke and dust, preventing the smoke and dust from spreading in the cabin 100b and posing a continuous threat to the laser, and improving the forming quality of the printed part 200.

In one embodiment, the first telescopic portion 11 and the second telescopic portion 21 can only expand and contract along the first direction. The first direction is the direction in which the air blower 10 points to the air receiver 20, or the direction in which the air receiver 20 points to the air blower 10, which makes it easier for the metal 3D printing device to follow the wind field system 100 and facilitates the control of the first telescopic part 11 and the first telescopic part 11 and the first telescopic part 11. The movement of the two telescopic parts 21 . In other embodiments, the first telescopic portion 11 and the second telescopic portion 21 can also be telescopically moved in any direction and angle in the space.

In one embodiment, the air outlet and the air intake are oppositely arranged along the first direction, so that the formed wind direction is the direction in which the air blowing member 10 points to the air receiving member 20, so that the airflow direction in the cabin 100b is from one side to the other side The uniform setting eliminates the backflow phenomenon caused by the reverse flow, ensures the airflow velocity, and prevents the smoke and dust from rising to other areas of the cabin 100b due to backflow, realizes the efficient removal of the smoke and dust and improves the molding quality of the printed part 200 .

Please refer to FIG. 1 and FIG. 2 , the telescopic distance ranges of the first telescopic portion 11 and the second telescopic portion 21 are both less than or equal to 1/2 of the length of the forming table 100 a. When the forming area required for the printed part 200 is only 1/2 of the total area of the forming table 100a, the first telescopic part 11 can be fully extended toward the wind collecting member 20, and the second telescopic part 21 can be fully retracted at the same time. As shown in FIG. 1 , the formable area of the forming table 100 a is only 1/2 of the total area of the side close to the air receiver 20 ; or as shown in FIG. At the same time, the first telescopic portion 11 is fully retracted, so that the formable area of the forming table 100a is only 1/2 of the total area of the side close to the wind collecting member 20 . In other embodiments, when the forming area required for the printed product 200 is greater than 1/2 of the total area of the forming table 100a, such as 1/3, the first telescopic portion 11 and the second telescopic portion 21 may only extend a part of the distance , so that the formable area of the forming table 100a is sufficient to form the printed product 200 . It can be understood that the telescopic distance range of the first telescopic portion 11 and the second telescopic portion 21 can also be other values, such as 1/3, 1/4 of the length of the forming table 100a or the length of the entire forming table 100a.

Referring to FIG. 3 , after the first telescopic portion 11 and the second telescopic portion 21 are telescopic, the air outlet and the air intake can be flush with the inner surface of the surrounding wall, so as to maximize the usable area of the forming table 100 a.

Referring to FIG. 4 , the blower 10 includes a plurality of first retractable parts 11 . The wind collecting member 20 includes a plurality of second telescopic portions 21 , and each first telescopic portion 11 corresponds to one second telescopic portion 21 along the first direction. In the case where the shape of the printed part 200 is irregular, each two of the first telescopic parts 11 and the second telescopic part 21 can be moved relative to each other and correspond to different parts of the printed part 200 , so as to realize adsorption printing according to the shape of the printed part 200 The smoke and dust generated in different parts of the printed part 200 can prevent a large number of ineffective areas on the forming table 100a due to the irregular shape of the printed part 200, and reduce the amount of the first telescopic part 11 and the second telescopic part 21 on both sides of the different parts of the printed part 200. distance, thereby improving the adsorption effect of smoke and dust.

The metal 3D printing device following the wind farm system 100 further includes a controller. The controller is communicatively connected to the plurality of first telescopic parts 11 and the second telescopic parts 21 . Due to the layer-by-layer printing of the printed product 200 during the 3D printing process, changes in shape and size will occur at different heights. The controller is used to control the expansion and contraction of the first telescopic part 11 and the second telescopic part 21 according to the shape and size of the printed part 200 during the forming process of the printed part 200 , so that the first telescopic part 11 and the second telescopic part 21 can be adjusted according to the The size change of the printed part 200 approaches or moves away from the corresponding part of the printed part 200 in real time, thereby improving the adsorption effect of smoke and dust and the forming quality of the printed part 200 .

Referring to FIG. 1 to FIG. 4 , the metal 3D printing apparatus follows the wind farm system 100 and further includes a powder spreading pipe 30 . After the powder spreading pipe 30 moves, it can sweep the area of the forming table 100a. During the sweeping process, the powder spreading tube 30 is used to spread powder layer by layer on the printed product 200 of the forming table 100 a to form the printed product 200 .

In one embodiment, the moving direction of the powder spreading pipe 30 is perpendicular to the first direction, so that the structure of the metal 3D printing device following the wind farm system 100 is more concise.

The metal 3D printing apparatus following the wind field system 100 further includes a laser, and the laser is placed on the top of the cabin 100b for emitting the laser to the powder of the forming table 100a, so as to solidify the powder to form the printed product 200 .

The above-mentioned metal 3D printing device follows the wind field system 100 to expand and contract through the first telescopic part 11 and the second telescopic part 21 until the air outlet and the air intake are close to the printed part 200, and then blow air to the printed part through the air outlet to take away the smoke and dust and The air intake also absorbs smoke and dust, so that the distance between the air outlet and the air intake can be adjusted, thereby effectively reducing the scope of the wind field required for the actual printing of the forming table 100a, enabling the wind field to smoothly take away the particles in the cabin 100b, thereby improving the molding process. quality purpose.

In addition, those of ordinary skill in the art should realize that the above embodiments are only used to illustrate the present application, not to limit the present application. Appropriate modifications and variations of these are within the scope of the disclosure of the present application.

Claims (10)

1. The utility model provides a metal 3D printing apparatus follows wind field system which characterized in that includes:

the forming table is used for bearing a printing workpiece;

the peripheral wall covers the forming table, the forming table and the peripheral wall surround to form a cabin, and the cabin is used for accommodating the printing workpiece;

the blowing piece is arranged on one side of the surrounding wall and comprises a first telescopic part, and a blowing port is formed in the first telescopic part;

the air collecting piece is arranged on one side, opposite to the blowing piece, of the surrounding wall and comprises a second telescopic part, and the second telescopic part is provided with an air collecting port;

the first expansion part and the second expansion part can expand and contract to enable the air blowing port and the air collecting port to be close to the printing workpiece.

2. The metal 3D printing apparatus following wind field system according to claim 1, wherein the first telescopic portion and the second telescopic portion are telescopic in a first direction, and the first direction is a direction in which the blowing member points to the wind scooping member, or a direction in which the wind scooping member points to the blowing member.

3. The metal 3D printing device following wind field system according to claim 2, wherein the blowing port and the wind receiving port are oppositely arranged in the first direction, so that a wind direction is a direction in which the blowing member points to the wind receiving member.

4. The metal 3D printing apparatus following wind field system according to claim 1, wherein the range of the telescopic distance of each of the first telescopic part and the second telescopic part is less than or equal to 1/2 of the length of the forming table.

5. The metal 3D printing device following wind field system according to claim 1, wherein there are a plurality of the first telescopic parts, a plurality of the second telescopic parts, and a plurality of the first telescopic parts and a plurality of the second telescopic parts correspond to each other one by one and to different portions of the printed article.

6. The metal 3D printing apparatus following wind field system according to claim 2, further comprising a powder laying pipe that lays powder on the forming table by moving to form the printed article.

7. The metal 3D printing apparatus following wind field system according to claim 6, wherein a moving direction of the powder laying pipe is perpendicular to the first direction.

8. The metal 3D printing device following wind field system according to claim 1, further comprising a controller, wherein the controller controls the telescopic lengths of the first telescopic part and the second telescopic part according to the size change or the position change of a printing area of the printed object in the forming process of the printed object.

9. The metal 3D printing device following wind farm system according to claim 1, the first telescopic part and the second telescopic part can enable the air blowing opening and the air collecting opening to be flush with the inner surface of the surrounding wall after being stretched.

10. The metal 3D printing device following wind farm system according to claim 1, wherein the metal 3D printing device following wind farm system further comprises a laser for emitting laser light to solidify the powder to form the printed article.

Images