Automatic metal powder adding device for 3D printing production line

Abstract

The utility model relates to the technical field of 3D printing, in particular to an automatic metal powder adding device for a 3D printing production line, which comprises a 3D printer, a powder feeding pipeline and a powder bin, the powder bin is arranged at the top of one end of the powder feeding pipeline, the 3D printer is connected with the powder feeding pipeline through a directly connected feeding barrel, and a rotating shaft with an auger is arranged in the powder feeding pipeline. The motor at one end drives the rotating shaft to rotate; a movable baffle is arranged above the direct-connection feeding barrel and fixedly connected with an air cylinder below the powder feeding pipeline through a bolt, and the air cylinder stretches out and draws back to control the movable baffle to open and close the direct-connection feeding barrel. The device has the advantages that the conveying pipeline is directly arranged on the upper portion, the auger is arranged in the conveying pipeline, pipeline blockage is avoided, and the manufacturing cost is lower than that of a navigation magnetic track laid on the ground; secondly, feeding is directly controlled through an air cylinder, safety and rapidness are achieved, the situation that the AGVs conduct feeding one by one is avoided, and production safety is improved; and thirdly, the powder is prevented from being scattered to other places due to system problems of the AGV transport vehicle through direct connection of the pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to an automatic metal powder adding device for a 3D printing production line. Background Art

[0002] 3D printing is a rapid prototyping technology. Based on a digital model file, hierarchical data of a part is generated by computer-aided design and imported into a forming device, and a part is formed by sintering powder materials layer by layer with a laser. During the process of 3D printing, insufficient powder materials will directly lead to the failure of part printing. As the processing size of 3D printed parts gradually increases, its manufacturing cycle becomes longer and longer. However, only a part of the powder materials can be stored inside the 3D printing device, so powder materials must be added to the device during printing.

[0003] An automatic metal powder adding device for a 3D printing production line with the patent number CN201911370328.1 includes a base. An AGV transport vehicle is provided on the base. A navigation magnetic track for the AGV transport vehicle is laid on the base. At least two 3D printers are arranged in the navigation magnetic track. A printer powder storage cylinder is arranged on the top of each 3D printer. A powder storage cylinder support is vertically arranged on one side of the base. A powder storage cylinder is installed on the top of the powder storage cylinder support. The powder storage cylinder is located above the AGV transport vehicle. A transfer powder cylinder is installed on the AGV transport vehicle. The transfer powder cylinder is respectively docked with the powder storage cylinder and the printer powder storage cylinder by the AGV transport vehicle through the navigation magnetic track. The AGV transport vehicle is connected with a controller.

[0004] However, there are the following problems: First, transporting metal powder by an AGV transport vehicle requires laying a navigation magnetic track on the ground, increasing the manufacturing cost. Second, when the AGV transport vehicle transports metal powder, it is necessary to send the transfer powder cylinder to the top of the 3D printer. If the weight is heavy and the height increases, it is easy to cause the center of gravity to tilt forward, resulting in tipping and causing safety accidents. Third, if the system fails, it cannot be transported to the designated position, resulting in the transfer powder cylinder being scattered to other places on the top of the 3D printer, causing environmental pollution. Summary of the Invention

[0005] The purpose of the utility model is to provide an automatic metal powder adding device for a 3D printing production line to solve the problems in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solutions: An automatic metal powder adding device for a 3D printing production line, including a 3D printer 1, a powder feeding pipeline 3, and a powder bin 4. The powder bin 4 is arranged at the top of one end of the powder feeding pipeline 3. The 3D printer 1 is connected to the powder feeding pipeline 3 through a direct-connected feeding bucket 2. It is characterized in that: A rotating shaft 9 with a screw conveyor 10 is arranged in the powder feeding pipeline 3 and is driven to rotate by a motor 10 at one end; A moving baffle 5 is arranged above the direct-connected feeding bucket 2 and is fixedly connected to the cylinder 8 below the powder feeding pipeline 3 through bolts. The expansion and contraction of the cylinder 8 controls the opening and closing of the moving baffle 5 for the direct-connected feeding bucket 2.

[0007] Preferably, a scraper 6 is arranged on the inner wall of the direct-connected feeding bucket 2 near the cylinder 8.

[0008] Preferably, the scraper 6 is arranged on the upper and lower sides of the moving baffle 5 and is attached to the moving baffle 5.

[0009] Preferably, the stroke of the cylinder 8 is equal to the width of the direct-connected feeding bucket 2.

[0010] Preferably, the outer diameter of the screw conveyor 10 is the same as the inner diameter of the powder feeding pipeline 3.

[0011] Preferably, the cylinder 8 is connected to the powder feeding pipeline 3 through a bracket 7, and the bracket 7 is fixedly welded to the powder feeding pipeline 3.

[0012] Compared with the prior art, the beneficial effects of the present utility model are: First, directly by arranging the conveying pipeline above and having a screw conveyor in the conveying pipeline, it avoids pipeline blockage, and the manufacturing cost is lower than that of laying a navigation magnetic track on the ground; Second, directly controlling the feeding through the cylinder is safe and fast, avoiding the one-by-one feeding of AGV transport vehicles, and improving production safety; Third, through direct pipeline connection, it avoids the powder being scattered to other places by the AGV transport vehicle due to system problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a structural schematic diagram of the present utility model;

[0014] Figure 2 is Figure 1 a partial enlarged view of K in

[0015] In the figure: 1, 3D printer; 2, direct-connected feeding bucket; 3, powder feeding pipeline; 4, powder bin; 5, moving baffle; 6, scraper; 7, bracket; 8, cylinder; 9, rotating shaft; 10, screw conveyor; 11, motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figure 1-2 , the present utility model provides a technical solution: an automatic metal powder adding device for a 3D printing production line, including a 3D printer 1, a powder feeding pipe 3, and a powder bin 4. The powder bin 4 is arranged at the top of one end of the powder feeding pipe 3, and the 3D printer 1 is connected to the powder feeding pipe 3 through a direct connection feeding bucket 2.

[0018] A rotating shaft 9 with a screw conveyor 10 is arranged in the powder feeding pipe 3 and is driven to rotate by a motor 10 at one end. The outer diameter of the screw conveyor 10 is the same as the inner diameter of the powder feeding pipe 3 to prevent powder from accumulating and caking in the powder feeding pipe 3; a moving baffle 5 is arranged above the direct connection feeding bucket 2 and is fixedly connected to the cylinder 8 below the powder feeding pipe 3 through bolts. The expansion and contraction of the cylinder 8 control the opening and closing of the moving baffle 5 for the direct connection feeding bucket 2.

[0019] The cylinder 8 is connected to the powder feeding pipe 3 through a bracket 7, and the bracket 7 is fixedly welded to the powder feeding pipe 3. At the same time, a scraper 6 is arranged on the inner wall of the direct connection feeding bucket 2 near the cylinder 8, and the scraper 6 is arranged on both the upper and lower sides of the moving baffle 5 and is in contact with the moving baffle 5 to prevent powder from spilling out.

[0020] The stroke of the cylinder 8 is equal to the width of the direct connection feeding bucket 2 to prevent the cylinder 8 from completely pulling out the moving baffle 5 from the direct connection feeding bucket 2.

[0021] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic metal powder adding device for a 3D printing production line, comprising a 3D printer (1), a powder feeding pipeline (3) and a powder bin (4). The powder bin (4) is arranged at the top of one end of the powder feeding pipeline (3). The 3D printer (1) is connected to the powder feeding pipeline (3) through a directly-connected feeding barrel (2), and is characterized in that: The powder feeding pipeline (3) is provided with a rotating shaft (9) with a screw conveyor (10), and is driven to rotate by a motor (10) at one end; a movable baffle (5) is arranged above the direct-connected feeding barrel (2), and is fixedly connected to a cylinder (8) below the powder feeding pipeline (3) by bolts, and the expansion and contraction of the cylinder (8) controls the opening and closing of the movable baffle (5) for the direct-connected feeding barrel (2).

2. The automatic metal powder adding device for a 3D printing production line according to claim 1, characterized in that: A scraper (6) is arranged on the inner wall of the direct-connected feeding barrel (2) near the cylinder (8).

3. The automatic metal powder adding device for a 3D printing production line according to claim 1, characterized in that: The scraper (6) is arranged on the upper and lower sides of the movable baffle (5) and is attached to the movable baffle (5).

4. An automatic metal powder adding device for a 3D printing production line according to claim 1, characterized in that: The stroke of the cylinder (8) is equal to the width of the direct-connected feeding barrel (2).

5. The automatic metal powder adding device for a 3D printing production line according to claim 1, characterized in that: The outer diameter of the screw conveyor (10) is the same as the inner diameter of the powder feeding pipeline (3).

6. The automatic metal powder adding device for a 3D printing production line according to claim 1, wherein: The cylinder (8) is connected to the powder feeding pipeline (3) through a bracket (7), and the bracket (7) is fixedly welded to the powder feeding pipeline (3).

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