Workpiece mounting tool and 3D printed part internal flow channel post-processing system

Abstract

The utility model relates to 3D printing piece production technical field, the technical problem that the utility model solves is low efficiency, and the flushing effect is poor. In order to solve the above technical problem, the utility model provides a work piece mounting frock and 3D printing piece inner runner postprocessing system. The utility model includes: work piece mounting frock includes: annular main body is equipped with import; The inner wall at the front side of annular main body is equipped with first sealing station; The inner wall of first sealing station is sealed with 3D printing piece; The inner wall at the back side of annular main body is equipped with second sealing station; Along the radial direction of annular main body, the size of second sealing station is greater than the size of first sealing station; Second sealing station is arranged at the back side of 3D printing piece, and the side wall of second sealing station towards first sealing station is sealed with the back side of 3D printing piece; Sealing passage is arranged in the inner wall of annular main body and is located between first sealing station and second sealing station; Sealing passage is communicated with import. The utility model improves effect and flushing effect.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing production technology, and in particular to a post-processing system for the internal flow channel of a 3D printed part for workpiece mounting fixture. Background Technology

[0002] 3D printing technology is widely used in the aerospace field. It can manufacture complex metal parts with a shorter one-piece manufacturing cycle, avoiding the risks associated with multiple machining and welding processes. However, 3D printed parts have many flow channels, which are long and winding. During 3D printing, metal powder residue remains in these channels (since the material of 3D printed parts is a high-temperature alloy), requiring repeated pressurized forward and reverse rinsing operations.

[0003] The 3D printed parts are made of high-temperature alloys and have multiple evenly distributed flow channels inside. Because powder residue is generated during the 3D printing process and remains on the surface of the part, while the powder residue on the outer surface is relatively easy to clean, the flow channels inside the tubes are long, narrow, and winding, making it difficult to remove excess material. After production, the 3D printed parts require post-processing (rinsing, drying, and baking). Existing post-processing systems separate the rinsing and drying processes, requiring separate rinsing and drying fixtures. This necessitates repeatedly mounting the 3D printed parts onto the fixtures, resulting in low efficiency and poor rinsing effectiveness. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the above-mentioned problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a workpiece mounting fixture, comprising: The main body is ring-shaped and has an inlet. The first sealing platform is located on the inner wall of the front side of the annular main body; the inner wall of the first sealing platform is sealed with the 3D printed part. The second sealing platform is located on the inner wall of the rear side of the annular body; the size of the second sealing platform is larger than that of the first sealing platform along the radial direction of the annular body; the second sealing platform abuts against the rear side of the 3D printed part, and the side wall of the second sealing platform facing the first sealing platform seals with the rear side of the 3D printed part. The sealing channel is located on the inner wall of the annular body and between the first sealing platform and the second sealing platform; the sealing channel is connected to the inlet.

[0006] In one embodiment of this utility model, the inner wall of the first sealing platform is provided with a first sealing groove, and a first sealing ring is provided in the first sealing groove. The side wall of the second sealing platform is provided with a second sealing groove, and a second sealing ring is provided in the second sealing groove.

[0007] In one embodiment of this utility model, the workpiece mounting fixture is detachably connected to the 3D printed part.

[0008] In one embodiment of this utility model, the outer wall of the annular body is provided with a plurality of first connecting ears along the circumferential direction; the 3D printed part is provided with a plurality of second connecting ears along the circumferential direction; the second connecting ears are provided in a one-to-one correspondence with the first connecting ears, and the two are connected by bolts.

[0009] In one embodiment of the present invention, the first connecting ear is located on the front side of the outer wall of the annular body.

[0010] In one embodiment of this utility model, the width of the contact position between the second sealing stage and the 3D printed part is greater than 5mm.

[0011] In one embodiment of this utility model, there are multiple inlets, which are evenly arranged along the circumference of the annular body.

[0012] This utility model also provides a post-processing system for internal flow channels in 3D printed parts, including: The workpiece mounting fixture in any of the above embodiments; The water supply equipment is connected to the inlet of the workpiece installation fixture via a flexible hose; The air source equipment is connected to the inlet of the workpiece installation fixture via a flexible hose.

[0013] In one embodiment of this utility model, this application also includes a tee, which is configured to correspond one-to-one with the inlet; the inlet, water source equipment and gas source equipment are connected through the tee.

[0014] In one embodiment of this utility model, control valves are respectively provided at the position where the three-way valve is connected to the water source equipment and at the position where it is connected to the gas source equipment.

[0015] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art: The workpiece mounting fixture and 3D printed part internal flow channel post-processing system described in this utility model combine the rinsing and drying processes. The 3D printed part is mounted on this fixture, and the rinsing and drying processes are switched by changing the inlet to a water source or an air source. Therefore, this application only requires one set of fixtures to complete the rinsing and drying processes, eliminating the need to change fixtures between the two processes and improving efficiency. During the rinsing process, this application achieves alternating water rinsing and air purging by switching the inlet to a water source or an air source. The alternating flow of water and air into the flow channel cleans fine particles adsorbed on the inner wall of the flow channel, allowing for better removal of excess material and improving the cleaning effect. After rinsing and cleaning, the inlet is connected to the air source, and clean compressed air is used to dry the moisture in the flow channel, completing the drying process. Furthermore, this application seals the sides and sidewalls of the 3D printed part to improve the sealing effect and prevent water and air leakage. Attached Figure Description

[0016] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 This is a schematic diagram of the structure of a workpiece mounting fixture in a preferred embodiment of the present invention; Figure 2 yes Figure 1 The front view of the workpiece mounting fixture shown; Figure 3 yes Figure 2 AA section view; Figure 4 yes Figure 1 The diagram shows the structure of the workpiece mounting fixture after removing the first and second sealing rings. Figure 5 yes Figure 1 The diagram shows the installation of the workpiece mounting fixture and the 3D printed part. Explanation of reference numerals in the accompanying drawings: 100, annular body; 110, inlet; 120, first connecting lug; 200, First sealing platform; 210, First sealing groove; 220, First sealing ring; 300. Second sealing platform; 310. Second sealing groove; 320. Second sealing ring; 400. Sealed passage; 500, 3D printed parts; 510, runners; 600, Three-way. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0018] Reference Figures 1-5 As shown, this embodiment of the present invention provides a 3D printed part internal flow channel post-processing system, including a workpiece mounting fixture, a water source device, and an air source device (the water source device is used to provide rinsing liquid; the air source device is used to provide compressed air). The water source device is connected to the inlet 110 of the workpiece mounting fixture via a hose; the air source device is connected to the inlet 110 of the workpiece mounting fixture via a hose.

[0019] The workpiece mounting fixture includes an annular body 100, a first sealing platform 200, a second sealing platform 300, and a sealing channel 400. The annular body 100 has an inlet 110; the first sealing platform 200 is located on the inner wall of the front side of the annular body 100; the inner wall of the first sealing platform 200 seals against the 3D printed part 500; the second sealing platform 300 is located on the inner wall of the rear side of the annular body 100; along the radial direction of the annular body 100, the size of the second sealing platform 300 is larger than the size of the first sealing platform 200; the second sealing platform 300 abuts against the rear side of the 3D printed part 500, and the side wall of the second sealing platform 300 facing the first sealing platform 200 seals against the rear side of the 3D printed part 500; the sealing channel 400 is located on the inner wall of the annular body 100 and between the first sealing platform 200 and the second sealing platform 300; the sealing channel 400 communicates with the inlet 110.

[0020] Specifically, this embodiment combines the rinsing and drying processes. The 3D printed part 500 is mounted on this fixture, and the rinsing and drying processes are switched by changing the inlet 110 to either a water source or an air source. This application requires only one set of fixtures to complete both processes, eliminating the need to change fixtures between them and improving efficiency. During rinsing, the application achieves alternating water rinsing and air purging by switching the inlet 110 to either a water source or an air source. The alternating flow of water and air into the channel 510 cleans fine particles adsorbed on the inner wall of the channel 510, allowing for better removal of excess material and improved cleaning effectiveness. After rinsing, the inlet 110 is connected to the air source, and clean compressed air is used to dry the moisture in the channel 510, completing the drying process. Furthermore, this application seals the 3D printed part 500 from its sides and sidewalls to improve sealing and prevent water and air leakage.

[0021] Furthermore, the inner wall of the first sealing platform 200 is provided with a first sealing groove 210, and a first sealing ring 220 is provided in the first sealing groove 210. The side wall of the second sealing platform 300 is provided with a second sealing groove 310, and a second sealing ring 320 is provided in the second sealing groove 310.

[0022] Specifically, this embodiment improves the sealing effect between the tooling and the 3D printed part 500 by using sealing rings (first sealing ring 220 and second sealing ring 320). The sealing rings (first sealing ring 220 and second sealing ring 320) are limited and fixed by sealing grooves (first sealing groove 210 and second sealing groove 310), ensuring that the sealing rings are securely installed on the first sealing platform 200 and the second sealing platform 300, thereby improving their service life.

[0023] Furthermore, the workpiece mounting fixture is detachably connected to the 3D printed part 500. In some possible embodiments, the outer wall of the annular body 100 is provided with a plurality of first connecting ears 120 along the circumferential direction; the annular body 100 and the first connecting ears 120 can be integrally machined. The 3D printed part 500 is provided with a plurality of second connecting ears along the circumferential direction; the second connecting ears are provided in a one-to-one correspondence with the first connecting ears 120, and the two are connected by bolts.

[0024] Specifically, in this embodiment, bolts are used to connect the workpiece mounting fixture to the 3D printed part 500, which facilitates quick installation and disassembly and improves efficiency.

[0025] Furthermore, the first connecting ear 120 is located on the front side of the outer wall of the annular body 100.

[0026] Specifically, in this embodiment, when installing the 3D printed part 500, the 3D printed part 500 is first placed against the second sealing platform 300 on the rear side of the workpiece mounting fixture, and then connected to the 3D printed part 500 from the front side of the workpiece mounting fixture, thereby ensuring the stability and reliability of the connection between the workpiece mounting fixture and the 3D printed part 500.

[0027] Furthermore, the width B at the contact point between the second sealing stage 300 and the 3D printed part 500 is greater than 5mm.

[0028] Specifically, this embodiment can ensure that the 3D printed part 500 is firmly and reliably abutted against the second sealing platform 300, thereby preventing the 3D printed part 500 from shifting during rinsing and drying, which would lead to sealing failure and affect rinsing and drying.

[0029] Furthermore, there are multiple inlets 110 (e.g., two), and the multiple inlets 110 are evenly arranged around the circumference of the annular body 100.

[0030] Specifically, this embodiment sets up multiple inlets 110 to improve efficiency.

[0031] Furthermore, this application also includes a tee 600, which is set up one-to-one with the inlet 110; the inlet 110, the water source equipment and the gas source equipment are connected through the tee 600.

[0032] Specifically, this embodiment uses a T-junction 600 to enable a single tooling to connect water and gas supply equipment, resulting in a simple structure and low cost.

[0033] Furthermore, in the 600 three-way valve, control valves are installed at the connection points with the water source equipment and the gas source equipment, respectively.

[0034] Specifically, this embodiment controls the opening and closing of two control valves to switch between water or air supply to inlet 110, thereby realizing the rinsing and drying processes.

[0035] In some embodiments, the workpiece mounting fixture is made of 304 stainless steel.

[0036] In some embodiments, this application also includes an oven.

[0037] The specific operational steps for this application are as follows: The 3D printed part 500 is placed against the second sealing platform 300. The first connecting ear 120 is aligned with the second connecting ear and connected by bolts. The first sealing ring 220, the second sealing ring 320, the side wall of the 3D printed part 500, and the sealing channel 400 form a sealed cavity. A water source and an air source are alternately connected to the inlet 110, thereby alternately introducing air and water into the sealed cavity for repeated flushing (water and air flow into the sealed cavity from the tee 600, and then into the flow channel 510 of the 3D printed part 500). During the flushing process, different pressures and times can be set (these can be set on the water source and air source). The outlet of the 3D printed part 500 is wrapped with a white cloth until no visible residue remains on the cloth, indicating that the flushing is successful. After flushing, the inlet 110 is connected to the air source again, and clean compressed air is used to dry the moisture in the flow channel 510. Remove the 3D printed part 500 from the workpiece mounting fixture, and then place it in an oven to dry it to prevent rust. After rinsing, promptly use an oven to dry the moisture inside the 3D printed part 500 to prevent rust.

[0038] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A workpiece mounting fixture, characterized in that: include: The main body is ring-shaped and has an inlet. The first sealing platform is located on the inner wall of the front side of the annular body; the inner wall of the first sealing platform is sealed with the 3D printed part. The second sealing platform is located on the inner wall of the rear side of the annular body; the size of the second sealing platform is larger than the size of the first sealing platform along the radial direction of the annular body; the second sealing platform abuts against the rear side of the 3D printed part, and the side wall of the second sealing platform facing the first sealing platform seals with the rear side of the 3D printed part. A sealing channel is provided on the inner wall of the annular body and located between the first sealing platform and the second sealing platform; the sealing channel is connected to the inlet.

2. The workpiece mounting fixture according to claim 1, characterized in that: The inner wall of the first sealing platform is provided with a first sealing groove, and a first sealing ring is provided in the first sealing groove; And / or, the side wall of the second sealing platform is provided with a second sealing groove, and a second sealing ring is provided in the second sealing groove.

3. The workpiece mounting fixture according to claim 1, characterized in that: The workpiece mounting fixture is detachably connected to the 3D printed part.

4. The workpiece mounting fixture according to claim 3, characterized in that: The outer wall of the ring-shaped main body is provided with a plurality of first connecting ears along the circumferential direction; the 3D printed part is provided with a plurality of second connecting ears along the circumferential direction; the second connecting ears are provided in a one-to-one correspondence with the first connecting ears, and the two are connected by bolts.

5. The workpiece mounting fixture according to claim 4, characterized in that: The first connecting ear is located on the front side of the outer wall of the annular body.

6. The workpiece mounting fixture according to claim 1, characterized in that: The width of the second sealing stage at the contact point with the 3D printed part is greater than 5mm.

7. The workpiece mounting fixture according to claim 1, characterized in that: There are multiple inlets, and the multiple inlets are evenly arranged along the circumference of the annular body.

8. A post-processing system for internal flow channels in 3D printed parts, characterized in that: include: The workpiece mounting fixture according to any one of claims 1 to 7; Water source equipment, connected to the inlet of the workpiece installation fixture; The gas source equipment is connected to the inlet of the workpiece mounting fixture.

9. The 3D printed part internal flow channel post-processing system according to claim 8, characterized in that: It also includes a tee, which is set one-to-one with the inlet; the inlet, the water source equipment and the gas source equipment are connected through the tee.

10. The 3D printed part internal flow channel post-processing system according to claim 9, characterized in that: In the three-way valve, control valves are respectively installed at the location where it is connected to the water source equipment and at the location where it is connected to the gas source equipment.

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