SLM (selective laser melting) printing piece powder cleaning equipment

Abstract

An SLM (selective laser melting) printing piece powder cleaning device belongs to the technical field of printing piece powder cleaning and comprises a powder cleaning cabinet with a hinged door, two fixing plates and a dust collecting cover are fixedly mounted in the powder cleaning cabinet, a trapezoidal frame is rotatably mounted between the two fixing plates and located above the dust collecting cover, and a gear motor is fixedly mounted on the right surface of the right fixing plate. The output end of the speed reduction motor is fixedly connected with the right end of the trapezoidal frame, a rotary speed reduction motor is fixedly installed in the trapezoidal frame, a vibration carrying hammer is fixedly installed on a rotary disc of the rotary speed reduction motor through a flange and used for being connected with an external clamp to clamp and place a printing piece, and a discharging pipe is fixedly installed on the lower surface of the dust collection cover. According to the powder cleaning cabinet, residual powder in a 3D printing piece can be cleaned out through vibration generated by the vibration carrying hammer, the powder cleaning efficiency is improved, the whole powder cleaning process is carried out in the powder cleaning cabinet, the powder can be prevented from being diffused to the outside, the risk of combustion or explosion accidents is reduced, and the safety performance of equipment is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder cleaning of printed parts, and in particular relates to a powder cleaning device for SLM printed parts. Background Art

[0002] SLM (Selective Laser Melting) prints are manufactured using selective laser melting technology. During 3D printing, residual powder remains on the workpiece. Some of this powder is trapped in complex geometric paths with narrow dimensions, making it difficult to clean with conventional cleaning methods. The metal powder in 3D printed workpieces is often flammable and explosive, generating dust during cleaning, posing a potential metal dust explosion hazard.

[0003] The traditional powder cleaning process for 3D printing relies heavily on manual labor, resulting in inconsistent and inefficient cleaning results, poor operational rationality, and poor repeatability. The cleaned powder is dispersed into the surrounding environment and cannot be effectively recovered, resulting in powder waste, increased processing costs, and a dusty environment that seriously endangers operator and equipment safety. Furthermore, handling powder in an open environment promotes oxidation of powder particles, especially highly reactive powders such as aluminum and titanium, which are prone to combustion or explosion, causing serious accidents.

[0004] In order to solve the above technical problems, a powder cleaning device for SLM printing parts is provided. Utility Model Content

[0005] In view of the problems of low efficiency and poor safety when manually cleaning metal powder in 3D printed workpieces in the prior art, the present invention provides an SLM printed part powder cleaning device, which can load the 3D printed part onto a vibrating hammer through an external clamp. Afterwards, the ladder frame and the vibrating hammer can be driven by a reduction motor to flip the 3D printed part downward, and the residual powder in the 3D printed part can be cleaned out by using the vibration generated by the vibrating hammer. The rotary reduction motor can also be started to drive the vibrating hammer and the 3D printed part to rotate circumferentially to speed up the powder cleaning efficiency. The entire powder cleaning process is carried out in a powder cleaning cabinet, effectively replacing the manual knocking cleaning method. It is not only more efficient, but the cleaned powder is isolated in the powder cleaning cabinet and can be collected uniformly through a dust hood. This prevents the powder from spreading to the outside world, reduces the risk of combustion or explosion accidents, greatly improves the safety performance of the equipment, and effectively solves the problems of low efficiency and poor safety when manually cleaning metal powder in 3D printed workpieces in the prior art. The specific technical solution is as follows:

[0006] A powder cleaning device for SLM printed parts, comprising a powder cleaning cabinet with a double-door, wherein two fixed plates and a dust collecting hood are fixedly installed in the powder cleaning cabinet, a ladder frame is rotatably installed between the two fixed plates, the ladder frame is located above the dust collecting hood, a reduction motor is fixedly installed on the right surface of the right fixed plate, the output end of the reduction motor is fixedly connected to the right end of the ladder frame, a rotary reduction motor is fixedly installed in the ladder frame, a vibrating hammer is fixedly installed on the turntable of the rotary reduction motor through a flange, the vibrating hammer is used to connect to an external clamp to clamp and place the printed part, and a discharge pipe is fixedly installed on the lower surface of the dust collecting hood.

[0007] In the above technical solution, the vibration load hammer includes a connecting plate and a top plate, the connecting plate is fixedly connected to the turntable of the rotary reduction motor through a flange, and a plurality of springs are fixedly installed between the connecting plate and the top plate, two vibrators are fixedly installed symmetrically on the lower surface of the top plate, and a plurality of mounting holes for connecting external clamps are opened on the upper surface of the top plate;

[0008] In the above technical solution, four directional sliding rods are symmetrically fixedly installed on the lower surface of the top plate, and the directional sliding rods are slidably connected to the connecting plate;

[0009] In the above technical solution, a plurality of air nozzles are fixedly installed on the inner side wall of the dust collecting hood, and the air inlet ends of the air nozzles are fixedly connected to an air source connector, which is used to connect to an external compressed air supply device, and the air source connector is located below the dust collecting hood;

[0010] In the above technical solution, a powder return tank is screwed onto the discharge end of the discharge pipe.

[0011] Compared with the prior art, the present invention provides an SLM printing part powder cleaning device with the following beneficial effects:

[0012] The utility model can drive the ladder frame and the vibrating hammer to flip through the reduction motor, turn the 3D printed part downward, and use the vibrating hammer to generate vibration to clean out the residual powder in the 3D printed part. The rotary reduction motor can also be started to drive the vibrating hammer and the 3D printed part to rotate circumferentially, thereby accelerating the powder cleaning efficiency. The entire powder cleaning process is carried out in the powder cleaning cabinet, effectively replacing the manual knocking cleaning method. Not only is the efficiency higher, but the cleaned powder is isolated in the powder cleaning cabinet and can be collected uniformly through the dust collection hood, effectively preventing the powder from spreading to the outside, reducing the risk of combustion or explosion accidents, and greatly improving the safety performance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the main structure of the present utility model.

[0014] Figure 2It is a rear view structural schematic diagram of the present utility model.

[0015] Figure 3 This is a schematic diagram of the internal structure of the powder cleaning cabinet of the present invention.

[0016] Figure 4 This is a schematic diagram of the main structure of the vibration load hammer of the present utility model.

[0017] Figure 5 This is a schematic diagram of the structure of the rotary reduction motor of the present utility model.

[0018] Figure 6 This is a schematic diagram of the top plate structure of the present utility model.

[0019] Figures 1-6 Among them: 1. Powder cleaning cabinet; 11. Fixed plate; 12. Dust hood; 13. Feeding pipe; 14. Powder return tank; 2. Ladder frame; 3. Reducer motor; 4. Rotary reducer motor; 5. Vibrating hammer; 51. Connecting plate; 52. Spring; 53. Top plate; 531. Mounting hole; 54. Vibrator; 55. Directional slide bar; 6. Air nozzle; 7. Air source connector. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In this embodiment, front, back, left, right, up and down are represented by Figure 1 Describes the datum. Figures 1-6 , the utility model provides a technical solution:

[0022] A powder cleaning device for SLM printed parts, comprising a powder cleaning cabinet 1 with a double-door, wherein two fixed plates 11 and a dust collecting cover 12 are fixedly installed in the powder cleaning cabinet 1, a ladder frame 2 is rotatably installed between the two fixed plates 11, the ladder frame 2 is located above the dust collecting cover 12, a reduction motor 3 is fixedly installed on the right surface of the right fixed plate 11, the output end of the reduction motor 3 is fixedly connected to the right end of the ladder frame 2, a rotary reduction motor 4 (a rotary reducer with a power source of model WEA9) is fixedly installed in the ladder frame 2, a vibrating hammer 5 is fixedly installed on the turntable of the rotary reduction motor 4 through a flange, the vibrating hammer 5 is used to connect to an external fixture to clamp and place the printed part, a discharge pipe 13 is fixedly installed on the lower surface of the dust collecting cover 12, and a powder return tank 14 is screwed on the discharge end of the discharge pipe 13;

[0023] It should be said that, combined with Figure 3 、 Figure 4 、 Figure 5 and Figure 6 As shown, the vibrating hammer 5 includes a connecting plate 51 and a top plate 53. The connecting plate 51 is fixedly connected to the turntable of the rotary reduction motor 4 through a flange, and a plurality of springs 52 are fixedly installed between the connecting plate 51 and the top plate 53. Two vibrators 54 are fixedly installed symmetrically on the left and right of the lower surface of the top plate 53. The upper surface of the top plate 53 is provided with a plurality of mounting holes 531 for connecting external clamps.

[0024] Before use, connect the reduction motor 3, the rotary reduction motor 4 and the vibrator 54 to the external electric control cabinet to facilitate the control of the start, stop and speed adjustment of the two motors and the control of the vibrator 54. Then, install the external clamp on the upper surface of the top plate 53 through the mounting hole 531.

[0025] During use, the double doors of the powder cleaning cabinet 1 are opened, and the 3D printed part to be cleaned is clamped and installed on the top plate 53 using an external clamp. Afterwards, the reduction motor 3 is controlled to rotate by the external electric control cabinet, and the ladder frame 2 is flipped 180° so that the top of the clamped 3D printed part faces downward. Then, the vibrator 54 is started. Under the action of the spring 52, the top plate 53 and the 3D printed part vibrate, thereby cleaning the dust inside the 3D printed part. The cleaned dust falls into the dust collecting hood 12 and enters the powder return tank 14 through the discharge pipe 13 for collection. Compared with the prior art, the present device can effectively replace the manual knocking cleaning method for cleaning 3D printed parts. It is not only more efficient, but also the cleaned powder is isolated in the powder cleaning cabinet 1 and can be collected uniformly through the dust collecting hood 12, effectively preventing the powder from spreading to the outside world, reducing the risk of combustion or explosion accidents, and greatly improving the safety performance of the equipment.

[0026] To enhance the operational stability of the vibrating hammer 5, four symmetrically mounted directional slide bars 55 are fixed to the lower surface of the top plate 53. These slide bars 55 are slidably connected to the connecting plate 51. These slide bars 55 ensure that the top plate 53 repeatedly vibrates in a predetermined direction, effectively improving the operational stability of the equipment. In practice, these slide bars 55 constrain the motion of the top plate 53, preventing it from deviating from the predetermined direction during vibration, thereby ensuring efficient and stable operation of the powder cleaning equipment.

[0027] Finally, in order to further enhance the powder cleaning effect and efficiency, such as Figure 1 and Figure 3As shown, multiple air nozzles 6 are fixedly mounted on the inner side wall of the dust hood 12. The air inlet ends of the air nozzles 6 are fixedly connected to an air source connector 7, which is used to connect to an external compressed air supply device. The air source connector 7 is located below the dust hood 12. During the powder cleaning process, the air source connector 7 can be used to connect to an external compressed air supply device, and the air nozzles 6 can be used to blow air to the outer surface of the 3D printed part. During this blowing process, the rotary reduction motor 4 can be used to drive the vibrating hammer 5 to rotate the 3D printed part, adjusting the cleaning surface to align with the air nozzles 6, thereby effectively improving the powder cleaning efficiency.

Claims

1. A powder cleaning device for SLM printing parts, characterized in that: The invention comprises a powder cleaning cabinet (1) with a double-door, wherein two fixed plates (11) and a dust collecting hood (12) are fixedly installed in the powder cleaning cabinet (1), a ladder frame (2) is rotatably installed between the two fixed plates (11), the ladder frame (2) is located above the dust collecting hood (12), a reduction motor (3) is fixedly installed on the right surface of the right fixed plate (11), the output end of the reduction motor (3) is fixedly connected to the right end of the ladder frame (2), a rotary reduction motor (4) is fixedly installed in the ladder frame (2), a vibration load hammer (5) is fixedly installed on the turntable of the rotary reduction motor (4) through a flange, and the vibration load hammer (5) is used to connect an external fixture to clamp and place the printed part, and a discharge pipe (13) is fixedly installed on the lower surface of the dust collecting hood (12).

2. The SLM printing part powder cleaning device according to claim 1, characterized in that: The vibration load hammer (5) comprises a connecting plate (51) and a top plate (53); the connecting plate (51) is fixedly connected to the turntable of the rotary reduction motor (4) via a flange; a plurality of springs (52) are fixedly installed between the connecting plate (51) and the top plate (53); two vibrators (54) are fixedly installed on the lower surface of the top plate (53) in a bilaterally symmetrical manner; and a plurality of mounting holes (531) for connecting external fixtures are provided on the upper surface of the top plate (53).

3. The SLM printing part powder cleaning device according to claim 2, characterized in that: Four directional sliding rods (55) are symmetrically fixedly mounted on the lower surface of the top plate (53), and the directional sliding rods (55) are slidably connected to the connecting plate (51).

4. The SLM printing part powder cleaning device according to claim 1, characterized in that: A plurality of air nozzles (6) are fixedly mounted on the inner side wall of the dust collecting hood (12), and the air inlet ends of the air nozzles (6) are fixedly connected to an air source connector (7), the air source connector (7) being used to connect to an external compressed air supply device, and the air source connector (7) is located below the dust collecting hood (12).

5. The SLM printing part powder cleaning device according to claim 1, characterized in that: The discharge end of the discharge pipe (13) is screwed with a powder return tank (14).

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