A forming chamber dust recovery screening device for 3D metal printing

Abstract

The utility model discloses a kind of forming chamber dust recovery screening devices for 3D metal printing, it is related to 3D metal printing technical field.The utility model, including rack and cone barrel, rack is provided with elastic connecting piece, rack is elastically connected with cone barrel through elastic connecting piece, the rotating assembly is arranged on the cone barrel, and the rotating part of rotating assembly is provided with screening bucket.The utility model, through the upper end of elastic connecting piece and rack connection, lower end and cone barrel connection, make cone barrel suspend in rack, allow it to vibrate within certain amplitude, the metal powder to be handled is screened by screening bucket, and qualified fine powder is screened and falls into the bottom of cone barrel and is collected, coarse particle impurity is left in screening bucket, simultaneously, rotating assembly is rotated to screening bucket, periodic exciting force is generated by driving assembly start, and driving whole cone barrel generates high-frequency micro-amplitude vibration under the action of elastic connecting piece.

Description

Technical Field

[0001] This utility model relates to the field of 3D metal printing technology, specifically to a dust recovery and screening device for a molding chamber in 3D metal printing. Background Technology

[0002] In the field of metal 3D printing, with the continuous development of technology and the growth of market demand, the requirements for printing efficiency and cost control are getting higher and higher. In the process of metal 3D printing, after each layer of powder is sintered by the laser, the excess powder needs to be recovered by a powder scraper.

[0003] After each printing, a large amount of old powder mixed with impurities is generated in the forming chamber. This old powder not only contains incompletely sintered metal powder, but may also contain impurities such as oxides and carbides. Since metal powder consumables are expensive and have flammable and explosive properties, the powder in the forming chamber must be recycled after each printing.

[0004] To address this, a dust recovery and screening device for the molding chamber in 3D metal printing is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a dust recovery and screening device for molding chambers in 3D metal printing in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution: A dust collection and screening device for a molding chamber in 3D metal printing includes a frame and a cone. An elastic connector is provided on the frame, and the cone is elastically connected to the frame via the elastic connector. A rotating component is provided on the cone, and a screening hopper is provided on the rotating part of the rotating component for screening 3D metal printing dust. A driving component is provided on the surface of the cone to drive the cone to vibrate.

[0007] Furthermore, the elastic connector includes a rod fixedly installed on the top surface of the frame, and a connecting frame is movably sleeved on the surface of the rod. The connecting frame is fixedly connected to the cone barrel. A spring is sleeved on the surface of the rod, and a limit pin is inserted into the through hole on the surface of the rod.

[0008] Furthermore, the rotating assembly includes an annular track fixedly installed on the bottom surface of the cone top cover, a toothed ring rotatably sleeved on the surface of the annular track, a bearing ring fixedly installed on the inner ring of the toothed ring, a first motor fixedly installed on the top surface of the cone top cover, and a gear fixedly connected to the output end of the first motor, the gear meshing with the toothed ring.

[0009] Furthermore, when the screening hopper is inserted into the bearing ring, the edge of the top of the screening hopper is in contact with the top surface of the bearing ring. The top surface of the bearing ring is provided with a threaded post, and the edge of the top of the screening hopper is inserted into the threaded post, and the nut is fixed thereto.

[0010] Furthermore, the drive assembly includes a motor mounting bracket fixedly installed on both sides of the cone, a second motor fixedly installed on one side wall of the motor mounting bracket, and an eccentric block fixedly sleeved through the motor mounting bracket at the output end of the second motor.

[0011] Furthermore, the cross-section of the annular track is T-shaped, and its toothed ring has an annular groove on its end face that is rotatably fitted with the annular track.

[0012] The beneficial effects of this utility model are as follows: The upper end of the elastic connector is connected to the frame, and the lower end is connected to the cone, which suspends the cone within the frame, allowing it to vibrate to a certain amplitude. The metal powder to be processed is screened through the screening hopper. Qualified fine powder passes through the sieve and falls to the bottom of the cone for collection, while coarse particles remain in the screening hopper. At the same time, the screening hopper is rotated by the rotating component, and the driving component is activated to generate periodic excitation force, which drives the entire cone to produce high-frequency micro-amplitude vibration under the action of the elastic connector. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a utility model Figure 2 Enlarged view of part A; Figure 4 This is a front sectional view of the present invention; Reference numerals: 1. Frame; 2. Elastic connector; 201. Rod; 202. Connecting frame; 203. Spring; 204. Limiting pin; 3. Conical barrel; 4. Rotating assembly; 401. Circular track; 402. Gear ring; 403. Bearing ring; 404. First motor; 405. Gear; 5. Screening hopper; 6. Drive assembly; 601. Motor mounting bracket; 602. Second motor; 603. Eccentric block. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0017] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figures 1 to 4 As shown, a dust recovery and screening device for molding chamber in 3D metal printing includes a frame 1 and a cone 3. An elastic connector 2 is provided on the frame 1, and the cone 3 is elastically connected to the frame 1 via the elastic connector 2. like Figures 1 to 3 As shown, specifically, the elastic connector 2 includes a rod 201 fixedly installed on the top surface of the frame 1, and a connecting frame 202 is movably sleeved on the surface of the rod 201. The connecting frame 202 is fixedly connected to the cone 3. A spring 203 is sleeved on the surface of the rod 201, and a limit pin 204 is inserted into the through hole on the surface of the rod 201.

[0019] More specifically, the cone barrel 3 can move axially along the rod 201 via the connecting frame 202. The spring 203, which is sleeved on the rod 201, is compressed between the frame 1 and the connecting frame 202. Its elasticity provides suspension support for the cone barrel 3 and absorbs some vibration energy. The limiting pin 204 is inserted into the through hole on the surface of the rod 201. Its position is below the connecting frame 202 and is used to limit the maximum downward displacement of the connecting frame 202 and the cone barrel 3.

[0020] A rotating assembly 4 is provided on the cone 3, and a screening hopper 5 is provided on the rotating part of the rotating assembly 4 for screening 3D metal printing dust. like Figure 1 , Figure 2 and Figure 4 As shown, specifically, the rotating assembly 4 includes an annular track 401 fixedly installed on the bottom surface of the top cover of the cone barrel 3. A toothed ring 402 is rotatably sleeved on the surface of the annular track 401. A bearing ring 403 is fixedly installed on the inner ring of the toothed ring 402. A first motor 404 is fixedly installed on the top surface of the top cover of the cone barrel 3, and a gear 405 is fixedly connected to the output end of the first motor 404. The gear 405 meshes with the toothed ring 402.

[0021] More specifically, when the first motor 404 is started, it drives the gear 405 to rotate. Through the meshing of the gear 405 and the gear ring 402, the gear ring 402, the bearing ring 403 and the screening hopper 5 are driven to rotate together around the annular track 401, thereby driving the screening hopper 5 to rotate and increasing the screening efficiency of dust.

[0022] In some practical applications, when the screening hopper 5 is inserted into the bearing ring 403, the edge of the top of the screening hopper 5 is in contact with the top surface of the bearing ring 403. The top surface of the bearing ring 403 is provided with threaded posts, and the edge of the top of the screening hopper 5 is inserted into the threaded posts and the nuts are fixed to them.

[0023] More specifically, the top edge of the screening hopper 5 has a hole corresponding to the threaded post. During installation, align the hole of the screening hopper 5 with the threaded post and lower it so that the top edge of the hopper 5 fits against the top surface of the bearing ring 403. Then, use a nut to screw the threaded post in from above and tighten it.

[0024] In some practical applications, the cross-section of the annular track 401 is T-shaped, and its toothed ring 402 has a circular groove on its end face and is rotatably fitted with the annular track 401.

[0025] More specifically, the annular groove on the end face of the toothed ring 402 cooperates with the T-shaped annular track 401, ensuring that the toothed ring 402 can rotate smoothly around the annular track 401.

[0026] A drive assembly 6 is provided on the surface of the cone barrel 3 to drive the cone barrel 3 to vibrate; like Figure 1 and Figure 2 As shown, specifically, the drive assembly 6 includes a motor mounting bracket 601 fixedly installed on both sides of the cone barrel 3. A second motor 602 is fixedly installed on one side wall of the motor mounting bracket 601, and an eccentric block 603 is fixedly sleeved on the output end of the second motor 602 through the motor mounting bracket 601.

[0027] More specifically, the eccentric block 603 is driven to rotate by the output shaft of the second motor 602. Since the center of mass of the eccentric block 603 does not coincide with its center of rotation, it will generate periodic vibrations when rotating at high speed.

[0028] In summary: The upper end of the elastic connector 2 is connected to the frame 1, and the lower end is connected to the cone 3, so that the cone 3 is suspended inside the frame 1, allowing it to vibrate to a certain extent. The metal powder to be processed is screened through the screening hopper 5. The qualified fine powder passes through the sieve and falls to the bottom of the cone 3 for collection, while the coarse particles remain in the screening hopper 5. At the same time, the rotating component 4 rotates the screening hopper 5, and the driving component 6 is activated to generate periodic excitation force, driving the entire cone 3 to generate high-frequency micro-amplitude vibration under the action of the elastic connector 2.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dust recovery and screening device for a molding chamber in 3D metal printing, characterized in that, The device includes a frame (1) and a cone (3). The frame (1) is provided with an elastic connector (2). The cone (3) is elastically connected to the frame (1) via the elastic connector (2). The cone (3) is provided with a rotating component (4). The rotating part of the rotating component (4) is provided with a screening bucket (5) for screening 3D metal printing dust. The surface of the cone (3) is provided with a driving component (6) to drive the cone (3) to vibrate.

2. The dust recovery and screening device for a molding chamber in 3D metal printing according to claim 1, characterized in that, The elastic connector (2) includes a rod (201) fixedly installed on the top surface of the frame (1), and a connecting frame (202) is movably sleeved on the surface of the rod (201). The connecting frame (202) is fixedly connected to the cone (3). A spring (203) is sleeved on the surface of the rod (201), and a limit pin (204) is inserted into the through hole on the surface of the rod (201).

3. The dust recovery and screening device for the molding chamber of 3D metal printing according to claim 1, characterized in that, The rotating assembly (4) includes an annular track (401) fixedly installed on the bottom surface of the top cover of the cone barrel (3). A toothed ring (402) is rotatably sleeved on the surface of the annular track (401). A bearing ring (403) is fixedly installed on the inner ring of the toothed ring (402). A first motor (404) is fixedly installed on the top surface of the top cover of the cone barrel (3), and a gear (405) is fixedly connected to the output end of the first motor (404). The gear (405) meshes with the toothed ring (402).

4. The dust recovery and screening device for a molding chamber in 3D metal printing according to claim 3, characterized in that, When the screening hopper (5) is inserted into the bearing ring (403), the edge of the top of the screening hopper (5) is in contact with the top surface of the bearing ring (403). The top surface of the bearing ring (403) is provided with a threaded column, the edge of the top of the screening hopper (5) is inserted into the threaded column, and the nut is fixed to it.

5. A dust recovery and screening device for a molding chamber in 3D metal printing according to claim 1, characterized in that, The drive assembly (6) includes a motor mounting bracket (601) fixedly installed on both sides of the cone (3). A second motor (602) is fixedly installed on one side of the motor mounting bracket (601), and an eccentric block (603) is fixedly sleeved through the motor mounting bracket (601) at the output end of the second motor (602).

6. The dust recovery and screening device for a molding chamber in 3D metal printing according to claim 3, characterized in that, The cross-section of the annular track (401) is T-shaped, and its toothed ring (402) has a circular groove on its end face and is rotatably fitted with the annular track (401).

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