Cleaning and recycling device for powder in inner cavity of selective laser melting part

Abstract

The utility model discloses a powder cleaning and recycling device for an inner cavity of a selective laser melting part, which comprises a variable-diameter hose, an adapter substitute, a three-way pipeline, a side connecting pipe, a compressed air source, an air control switch and a powder recycling device, and air inlet control is performed at the side connecting pipe connected with the compressed air source through the air control switch. Gas enters the variable-diameter hose from the compressed gas source along the three-way pipeline and the conversion connector, powder in an inner cavity of a part is blown through the variable-diameter hose, and the diameter of the variable-diameter hose stretching into the inner cavity of the part can be adjusted to adapt to different powder outlet hole diameters. The powder recovery device sucks powder from the variable-diameter hose, the adapter and the three-way pipeline, so that the powder enters the powder recovery device to be collected, cleaning of the powder in the inner cavity of the part is achieved, powder recovery work is completed, the recycling efficiency of the powder is improved, and the problem that the powder in the inner cavity of the part adheres to the inner wall is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser selective melting equipment additive manufacturing technical field especially relates to a kind of laser selective melting part inner cavity powder cleaning and recycling device. BACKGROUND

[0002] Laser selective melting equipment additive manufacturing is an advanced manufacturing technology, which uses high-energy laser beam to melt metal powder layer by layer to form complex metal parts. Specifically, the technology first slices the three-dimensional CAD model and plans the scanning path to obtain the path information of the laser beam. Then, the computer inputs the path information layer by layer, and controls the laser beam to selectively melt the metal powder through a scanning galvanometer. The powder not irradiated by the laser will remain in a loose powder state. After processing a layer, the powder cylinder rises, the forming cylinder lowers the height of the slice layer thickness, and the powder spreading device scrapes the powder from the powder cylinder onto the forming platform. The laser melts the newly spread powder and integrates it with the previous layer. This process is repeated until the forming process is complete, resulting in a metal part identical to the three-dimensional model.

[0003] Laser selective melting technology is widely used in aerospace and other fields due to its rapid and efficient processing of complex parts. However, when forming parts with internal cavities, the internal cavity may accumulate a large amount of powder that cannot be removed or utilized due to small powder outlet holes or complex internal structures. If not cleaned and heat-treated in a timely manner, the powder in the internal cavity of the part may clump and adhere to the internal wall, affecting the use of the part. Therefore, we propose a laser selective melting part internal cavity powder cleaning and recycling device. SUMMARY

[0004] The main purpose of the utility model is to provide a laser selective melting part internal cavity powder cleaning and recycling device. The gas control switch controls the gas inlet at the side connecting pipe connected to the compressed gas source. When the gas control switch is opened, the gas enters the variable diameter hose from the compressed gas source along the three-way pipe and the conversion joint. The variable diameter hose is used to blow off the powder in the internal cavity of the part. The diameter of the variable diameter hose inserted into the internal cavity of the part can adapt to different powder outlet hole diameters. After the gas control switch is closed, the powder recycling device sucks the powder from the variable diameter hose, conversion joint, and three-way pipe, so that the powder enters the powder recycling device for collection. This not only cleans the powder in the internal cavity of the part but also recycles the powder, improves the efficiency of powder reuse, and reduces the problem of powder adhering to the internal wall of the internal cavity of the part. This effectively solves the problems in the background technology.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a kind of laser selective melting part inner cavity powder cleaning and recycling device, including variable diameter hose, conversion joint, three-way pipe, side connecting pipe, compressed gas source, gas control switch and powder recycling device, the variable diameter hose is connected three-way pipe by conversion joint One group of pipe body, and the remaining two groups of pipe body of three-way pipe are respectively intercommunicated and connected with side connecting pipe and compressed gas source, the pipe body of side connecting pipe is installed with gas control switch, and the pipe orifice outside of side connecting pipe away from gas control switch is intercommunicated and welded with compressed gas source.

[0007] Further, the long connecting pipe of the three-way pipe is communicated between the powder recycling device and the conversion joint, and a branch pipe extending from the outside of the long connecting pipe of the three-way pipe is communicated with the side connecting pipe;

[0008] By adopting the above technical scheme, after the long connecting pipe of the three-way pipe is communicated between the powder recycling device and the conversion joint, the powder sucked at the variable diameter hose can be sucked by the powder recycling device through the long connecting pipe of the three-way pipe via the conversion joint for collection.

[0009] Further, the two ends of the conversion joint are inserted with the long connecting pipe of the three-way pipe and the pipe body of the variable diameter hose;

[0010] By adopting the above technical scheme, the long connecting pipe of the three-way pipe and the pipe body of the variable diameter hose can be quickly inserted and connected at the two ends of the conversion joint.

[0011] Further, the inner diameter of the pipe body of the side connecting pipe is the same as that of the pipe body of the three-way pipe;

[0012] By adopting the above technical scheme, the side connecting pipe and the pipe body of the three-way pipe have the same inner diameter to smoothly pass through the powder.

[0013] Further, the pipe body of the variable diameter hose is an elastic hose body;

[0014] By adopting the above technical scheme, the hose body of the variable diameter hose can be elastically deformed to change the diameter.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model blows and cleans the powder in the inner cavity of the part, and cooperates with the powder recycling device to suck the powder in the inner cavity of the part for reuse, which not only realizes the cleaning of the powder in the inner cavity of the part but also completes the powder recycling work, improves the powder reuse efficiency, and reduces the problem of powder adhesion to the inner wall of the inner cavity of the part. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model laser selective melting part inner cavity powder cleaning and recycling device.

[0018] In the diagram: 1. Variable diameter hose; 2. Adaptor; 3. Tee; 4. Side connecting pipe; 5. Compressed air source; 6. Gas control switch; 7. Powder recovery device. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] like Figure 1 As shown, a device for cleaning and recovering powder from the inner cavity of a laser selective melting part includes a variable diameter hose 1, a conversion joint 2, a tee pipe 3, a side connecting pipe 4, a compressed air source 5, a gas control switch 6, and a powder recovery device 7. The variable diameter hose 1 is connected to one set of pipes of the tee pipe 3 through the conversion joint 2, and the remaining two sets of pipes of the tee pipe 3 are respectively interconnected with the side connecting pipe 4 and the compressed air source 5. The gas control switch 6 is installed in the pipe body of the side connecting pipe 4, and the compressed air source 5 is welded to the pipe opening of the side connecting pipe 4 away from the gas control switch 6.

[0021] The long connecting pipe of the three-way pipe 3 is connected between the powder recovery device 7 and the conversion joint 2, and a branch pipe that is connected to the side connecting pipe 4 extends out from the long connecting pipe of the three-way pipe 3.

[0022] By adopting the above technical solution, after the long connecting pipe of the three-way pipe 3 is connected between the powder recovery device 7 and the conversion joint 2, the powder is sucked in at the variable diameter hose 1, and the powder can be collected by the powder recovery device 7 through the conversion joint 2 along the long connecting pipe of the three-way pipe 3.

[0023] The adapter 2 has two connectors at both ends connected to the long connecting pipe of the tee pipe 3 and the pipe body of the variable diameter flexible hose 1.

[0024] By adopting the above technical solution, the long connecting pipe of the tee pipe 3 and the pipe body of the variable diameter flexible hose 1 can be quickly connected by insertion at both ends of the conversion joint 2.

[0025] The inner diameter of the side connecting pipe 4 is the same as the inner diameter of the three-way pipe 3.

[0026] By adopting the above technical solution, the side connecting pipe 4 and the three-way pipe 3 have the same inner diameter, allowing powder to pass through smoothly.

[0027] The variable diameter hose 1 has an elastic hose body.

[0028] By adopting the above technical solution, the hose body of the variable diameter hose 1 can be elastically deformed to change its diameter.

[0029] It should be noted that the utility model is a kind of laser selective melting part inner cavity powder cleaning and recycling device, variable diameter hose 1 is communicated after being communicated with the long connecting pipe of three-way pipe 3 by conversion joint 2, the other end long connecting pipe of three-way pipe 3 can be communicated powder recycling device 7, then the branch pipe of three-way pipe 3 can be communicated with compressed gas source 5 by the side connecting pipe 4 of installing gas control switch 6, gas control switch 6 is opened, gas is along three-way pipe 3 and conversion joint 2 from compressed gas source 5 into variable diameter hose 1, and the powder in the inner cavity of part is swept by variable diameter hose 1, the diameter of variable diameter hose 1 that stretches into the inner cavity of part can be adapted to different powder outlet hole aperture, after gas control switch 6 is closed, powder recycling device 7 is inhaled from variable diameter hose 1, conversion joint 2, three-way pipe 3, so that powder enters powder recycling device 7 and is collected, and the cleaning and recycling of the powder in the inner cavity of part are completed.

[0030] It should be noted that the utility model is a kind of laser selective melting part inner cavity powder cleaning and recycling device, the components in the utility model are components known to those skilled in the art, and its structure and principle are known to those skilled in the art by technical manual or by conventional experimental method.

[0031] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A powder cleaning and recycling device for internal cavities of a laser selective melting part, characterized in that: The variable diameter hose (1), the conversion joint (2), the three-way pipeline (3), the side connecting pipe (4), the compressed gas source (5), the gas control switch (6) and the powder recovery device (7), the variable diameter hose (1) is connected with the three-way pipeline (3) through the conversion joint (2), and the remaining two groups of pipe bodies of the three-way pipeline (3) are respectively connected with the side connecting pipe (4) and the compressed gas source (5), the gas control switch (6) is installed on the pipe body of the side connecting pipe (4), and the pipe opening outside the side connecting pipe (4) away from the gas control switch (6) is interconnected and welded with the compressed gas source (5).

2. The powder cleaning and recycling device for internal cavity of selective laser melting part according to claim 1, characterized in that: The long connecting pipe of the three-way pipeline (3) is communicated between the powder recovery device (7) and the conversion joint (2), and the long connecting pipe of the three-way pipeline (3) has a branch pipe communicated with the side connecting pipe (4) outside.

3. The powder cleaning and recycling device for internal cavity of selective laser melting part according to claim 1, characterized in that: The two end insertion interfaces of the conversion joint (2) are inserted with the long connecting pipe of the three-way pipeline (3) and the pipe body of the variable diameter hose (1).

4. The powder cleaning and recycling device for internal cavity of selective laser melting part according to claim 1, characterized in that: The inner diameter of the pipe body of the side connecting pipe (4) is the same as that of the pipe body of the three-way pipeline (3).

5. The powder cleaning and recycling device for internal cavity of selective laser melting parts according to claim 1, characterized in that: The pipe body of the variable diameter hose (1) is an elastic hose body.

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