Metal powder collecting device of metal 3D printer

Abstract

The utility model discloses a metal 3D printer metal powder collecting device which comprises a collecting box, two guide plates are fixedly connected to the interior of the collecting box, a frame is fixedly connected to the outer wall of the collecting box, a motor is fixedly connected to the interior of the frame, a small gear is fixedly arranged on the outer wall of an output shaft of the motor in a sleeved mode, and the outer wall of the output shaft of the motor is fixedly connected with a transmission shaft. The outer wall of the small gear is connected with a gear ring in a meshed mode, and a blocking plate is placed on the inner wall of the gear ring. According to the metal powder screening device, the material guide plate, the pinion, the gear ring, the blocking plate, the L-shaped rod, the fine-hole screening barrel, the extension rod, the spring, the metal ball and the rectangular plate are arranged, the fine-hole screening barrel conducts rapid screening on metal powder in the rotating process, and vibration generated by collision between the rectangular plate and the metal ball can achieve rapid screening. And the caked metal powder is prevented from blocking a plurality of fine holes in the fine hole screening barrel, rapid collection is facilitated, and the caked metal powder is independently discharged through the center pipe and the two waste collecting pipes.

Description

Technical Field

[0001] This utility model relates to the field of metal 3D printing technology, and in particular to a metal powder collection device for a metal 3D printer. Background Technology

[0002] Metal powder plays a crucial role in metal 3D printing, serving as a key material for additive manufacturing. Metal powder is melted and fused together by laser or electron beams through a layer-by-layer stacking process to form the desired three-dimensional object. However, after printing, the completed part is embedded in the metal powder. This powder needs to be recycled and sieved for reuse. This saves costs and reduces the need for new powder.

[0003] In existing technologies, during the laser printing process, some metal powder fills the edges of the printed layer and may undergo physical and chemical changes such as partial melting and sintering. These changes can cause the powder particles to clump together and increase in volume, thereby affecting the powder's flowability and packing density. When collected and reused, this affects the quality of subsequent printed parts. Therefore, we propose a metal powder collection device for metal 3D printers to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a metal powder collection device for metal 3D printers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A metal powder collection device for a metal 3D printer includes a collection box, two guide plates fixedly connected inside the collection box, a frame fixedly connected to the outer wall of the collection box, a motor fixedly connected inside the frame, a small gear fixedly sleeved on the outer wall of the motor output shaft, a gear ring meshing with the outer wall of the small gear, a sealing plate placed on the inner wall of the gear ring, an L-shaped rod fixedly connected to the outer wall of the sealing plate, one end of the L-shaped rod being fixedly connected to the inner wall of the frame, a fine-pore screening cylinder fixedly sleeved on the outer wall of the gear ring, a vibration mechanism on the outer wall of the sealing plate, and a waste collection mechanism on the outer wall of the collection box.

[0007] Preferably, the vibration mechanism includes an extension rod, the outer wall of the sealing plate is fixedly connected to one end of the extension rod, a plurality of springs are fixedly connected to the outer wall of the extension rod, a metal ball is fixedly connected to one end of each of the springs, and a plurality of rectangular plates are fixedly connected inside the fine-pore screening cylinder. By setting the vibration mechanism to drive the fine-pore screening cylinder to vibrate, it is helpful for the rapid screening and collection of metal powder.

[0008] Preferably, the waste collection mechanism includes a central tube, and the outer wall of the collection box has two through holes. The inner walls of the two through holes are fixedly connected to waste collection pipes. The tops of the two waste collection pipes are fixedly connected to the outer wall of the central tube. A dust removal fan is fixedly connected to one end of the central tube. Waste is collected separately by setting up the waste collection mechanism.

[0009] Preferably, the top of the collection box is fixedly connected to a powder inlet pipe, one end of the powder inlet pipe is fixedly connected to a diaphragm pump, the input end of the diaphragm pump is fixedly connected to a metal bellows, and one end of the metal bellows is located inside the metal 3D printer.

[0010] Preferably, the outer wall of the collection box has a circular hole, the inner wall of the circular hole is rotatably connected to the outer wall of the toothed ring, the outer wall of the toothed ring is fixedly fitted with a bearing, and the outer ring of the bearing is fixedly connected to the inner wall of the circular hole.

[0011] Preferably, the outer wall of the collection box is fixedly connected to a powder discharge pipe.

[0012] Preferably, the outer wall of the collection box is hinged with a sealing door, the outer wall of the sealing door is fixedly inlaid with tempered glass, and multiple hinge pieces are installed on the left outer wall of the sealing door, with one end of the multiple hinge pieces fixedly connected to the outer wall of the collection box.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] This solution incorporates a guide plate, pinion, gear ring, sealing plate, L-shaped rod, fine-pore screening cylinder, extension rod, spring, metal ball, and rectangular plate. During rotation, the fine-pore screening cylinder rapidly screens the metal powder. The vibration generated by the collision between the rectangular plate and the metal ball prevents clumped metal powder from clogging the multiple pores on the screening cylinder, facilitating rapid collection. The clumped metal powder is then individually discharged through a central tube and two waste collection pipes. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of a metal powder collection device for a metal 3D printer proposed in this utility model;

[0017] Figure 2 This is a front view cross-sectional structural diagram of a metal powder collection device for a metal 3D printer proposed in this utility model;

[0018] Figure 3 This is a rear cross-sectional view of a metal powder collection device for a metal 3D printer proposed in this utility model.

[0019] Figure 4 This is a partial three-dimensional structural diagram of a metal powder collection device for a metal 3D printer proposed in this utility model.

[0020] Figure 5 This is a schematic diagram of the toothed ring structure of a metal powder collection device for a metal 3D printer proposed in this utility model;

[0021] Figure 6 This is a schematic diagram of the guide plate structure of a metal powder collection device for a metal 3D printer proposed in this utility model.

[0022] In the diagram: 1. Collection box; 2. Powder inlet pipe; 3. Guide plate; 4. Frame; 5. Pinion gear; 6. Gear ring; 7. Sealing plate; 8. L-shaped rod; 9. Fine mesh screening cylinder; 10. Extension rod; 11. Spring; 12. Metal ball; 13. Waste collection pipe; 14. Central pipe; 15. Powder discharge pipe; 16. Sealing door; 17. Rectangular plate. Detailed Implementation

[0023] The following will be combined with the accompanying 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.

[0024] Depend on Figures 1-6 As shown, a metal powder collection device for a metal 3D printer is disclosed, comprising a collection box 1, a powder inlet pipe 2 fixedly connected to the top of the collection box 1, and a diaphragm pump fixedly connected to one end of the powder inlet pipe 2. The diaphragm pump uses a mechanical device to make the diaphragm inside the pump reciprocate, thereby compressing and stretching the air in the pump chamber to form a negative pressure and thus forming suction. Two guide plates 3 are fixedly connected inside the collection box 1, and the outer walls of the two guide plates 3 are slidably connected to the outer wall of the fine-pore screening cylinder 9.

[0025] A frame 4 is fixedly connected to the outer wall of the collection box 1. A motor is fixedly connected inside the frame 4. A small gear 5 is fixedly sleeved on the outer wall of the motor output shaft. A gear ring 6 is meshed with the outer wall of the small gear 5. A round hole is opened on the outer wall of the collection box 1. The inner wall of the round hole is rotatably connected to the outer wall of the gear ring 6. The motor drives the small gear 5 and the gear ring 6 to rotate.

[0026] A sealing plate 7 is placed on the inner wall of the toothed ring 6. The contact surface between the sealing plate 7 and the toothed ring 6 is sealed. An L-shaped rod 8 is fixedly connected to the outer wall of the sealing plate 7. One end of the L-shaped rod 8 is fixedly connected to the inner wall of the frame 4. The L-shaped rod 8 provides fixed support for the sealing plate 7 and the extension rod 10. A fine-pore screening cylinder 9 is fixedly sleeved on the outer wall of the toothed ring 6. The rotation of the toothed ring 6 drives the fine-pore screening cylinder 9 to rotate.

[0027] The outer wall of the sealing plate 7 is provided with a vibration mechanism, which includes an extension rod 10. The outer wall of the sealing plate 7 is fixedly connected to one end of the extension rod 10. Multiple springs 11 are fixedly connected to the outer wall of the extension rod 10. A metal ball 12 is fixedly connected to one end of each of the multiple springs 11. The multiple springs 11 support the multiple metal balls 12. Multiple rectangular plates 17 are fixedly connected inside the fine-pore screening cylinder 9. When the multiple rectangular plates 17 encounter the multiple metal balls 12 during rotation, they collide.

[0028] The outer wall of the collection box 1 is equipped with a waste collection mechanism, which includes a central tube 14. The outer wall of the collection box 1 has two through holes, and the inner walls of the two through holes are fixedly connected to waste collection pipes 13. The waste collection pipes 13 are L-shaped, and the tops of the two waste collection pipes 13 are fixedly connected to the outer wall of the central tube 14. One end of the central tube 14 is fixedly connected to a dust removal fan, and an existing dust removal filter bag is installed inside the air inlet of the dust removal fan.

[0029] The outer wall of the collection box 1 is fixedly connected to the powder discharge pipe 15, and the outer wall of the collection box 1 is hinged to the sealing door 16. The outer wall of the sealing door 16 is fixedly inlaid with tempered glass.

[0030] Working principle: When metal powder needs to be collected, the diaphragm pump operates to transport the metal powder into the collection box 1. Through two guide plates 3, the metal powder contacts the outer wall of the fine-mesh screening cylinder 9. The motor drives the pinion 5 to rotate, which in turn drives the gear ring 6 to rotate. The gear ring 6 then drives the fine-mesh screening cylinder 9 to rotate, which in turn drives multiple rectangular plates 17 to rotate. During this process, the rotation of the fine-mesh screening cylinder 9 screens the metal powder, placing agglomerated metal powder between the two guide plates 3, while finer metal powder flows smoothly... The fine-pore screening cylinder 9 enters the bottom of the inner wall of the collection box 1. At the same time, during screening, multiple rectangular plates 17 rotate and collide with multiple metal balls 12. The vibration generated by the collision is transmitted to the fine-pore screening cylinder 9, which prevents the agglomerated metal powder from clogging the multiple fine holes on the fine-pore screening cylinder 9 and helps to collect quickly. During collection, the metal powder is discharged through the powder discharge pipe 15. The dust removal fan operates to extract the agglomerated metal powder through the central pipe 14 and two waste collection pipes 13, and intercepts it through the filter bag inside the dust removal fan.

[0031] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0032] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A metal powder collection device for a metal 3D printer, comprising a collection box (1), characterized in that, The collection box (1) has two guide plates (3) fixedly connected inside. The outer wall of the collection box (1) is fixedly connected to a frame (4). The frame (4) is fixedly connected inside. A small gear (5) is fixedly sleeved on the outer wall of the motor output shaft. A gear ring (6) is meshed on the outer wall of the small gear (5). A sealing plate (7) is placed on the inner wall of the gear ring (6). An L-shaped rod (8) is fixedly connected to the outer wall of the sealing plate (7). One end of the L-shaped rod (8) is fixedly connected to the inner wall of the frame (4). A fine-hole screening cylinder (9) is fixedly sleeved on the outer wall of the gear ring (6). A vibration mechanism is provided on the outer wall of the sealing plate (7). A waste collection mechanism is provided on the outer wall of the collection box (1).

2. The metal powder collection device for a metal 3D printer according to claim 1, characterized in that, The vibration mechanism includes an extension rod (10), the outer wall of the sealing plate (7) is fixedly connected to one end of the extension rod (10), a plurality of springs (11) are fixedly connected to the outer wall of the extension rod (10), a metal ball (12) is fixedly connected to one end of each of the plurality of springs (11), and a plurality of rectangular plates (17) are fixedly connected inside the fine-pore screening cylinder (9).

3. The metal powder collection device for a metal 3D printer according to claim 2, characterized in that, The waste collection mechanism includes a central tube (14). The outer wall of the collection box (1) has two through holes. The inner walls of the two through holes are fixedly connected to waste collection pipes (13). The tops of the two waste collection pipes (13) are fixedly connected to the outer wall of the central tube (14). One end of the central tube (14) is fixedly connected to a dust removal fan.

4. The metal powder collection device for a metal 3D printer according to claim 1, characterized in that, The top of the collection box (1) is fixedly connected to a powder inlet pipe (2), and one end of the powder inlet pipe (2) is fixedly connected to a diaphragm pump.

5. The metal powder collection device for a metal 3D printer according to claim 1, characterized in that, The outer wall of the collection box (1) is provided with a circular hole, and the inner wall of the circular hole is rotatably connected to the outer wall of the toothed ring (6).

6. The metal powder collection device for a metal 3D printer according to claim 1, characterized in that, The outer wall of the collection box (1) is fixedly connected to a powder discharge pipe (15).

7. A metal powder collection device for a metal 3D printer according to claim 1, characterized in that, The outer wall of the collection box (1) is hinged with a sealing door (16), and the outer wall of the sealing door (16) is fixedly inlaid with tempered glass.

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