Metal powder screening device for 3D printing

Abstract

The metal powder screening device for 3D printing comprises a screening box body, a screening plate is arranged in the screening box body, a base is arranged at the bottom end of the screening box body in a communicating mode, a cavity is formed in the base, a collecting frame is arranged in the cavity, and a rotating plate is hinged to the inner wall of the left side of the screening box body; the screening plate is in threaded connection with the center of the rotating plate, a vibration motor is fixedly arranged on the outer wall of the front side of the screening box body, a bearing block located at the bottom end of the rotating plate is fixedly arranged on the inner wall of the right side of the screening box body, and a hydraulic telescopic rod hinged to the bottom face of the rotating plate is hinged to the top face of the bearing block. Compared with the prior art, the metal powder screening device has the advantages that rapid metal powder screening is achieved through the vibration motor, production efficiency is improved, screened defective products can be automatically discharged through cooperation of the hydraulic telescopic rod, manual operation is reduced, and labor intensity is lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, and specifically refers to a metal powder screening device for 3D printing. Background Art

[0002] 3D printing is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses 3D model files as the basis, uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing is usually achieved using digital technology material printers. It is often used to make models in the fields of mold manufacturing, industrial design, etc., and later gradually used for the direct manufacturing of some products. There are already parts printed using this technology.

[0003] The screening of metal powder is a crucial step in 3D printing, which directly affects the melting, flow and accumulation effects during the printing process, thus affecting the final printing quality. The traditional metal powder screening method mainly relies on manual screening, which has problems such as low efficiency, poor precision, and high labor intensity. In addition, the powder residues produced by screening are not convenient for unloading, so an efficient metal powder screening device for 3D printing is needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is that manual screening has low efficiency, poor precision and high labor intensity, and provides an efficient metal powder screening device for 3D printing.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a metal powder screening device for 3D printing, comprising a screening box, a screening plate is arranged in the screening box, a base is arranged at the bottom end of the screening box, a cavity is arranged in the base, a collecting frame is arranged in the cavity, the left and right side walls of the screening box are connected with openings, a rotating plate located on the opening is hingedly provided on the left inner wall of the screening box, the screening plate is screwed in the center of the rotating plate, a vibration motor is fixedly provided on the front outer wall of the screening box, a load-bearing block located at the bottom end of the rotating plate is fixedly provided on the right inner wall of the screening box, a hydraulic telescopic rod hinged to the bottom surface of the rotating plate is hingedly provided on the top surface of the load-bearing block, and a trapezoidal waste trough is fixedly provided on the left outer wall of the screening box at the bottom end of the opening.

[0006] As an improvement, the left side wall of the screening box is hingedly provided with a unloading cover plate that matches the opening, and the right side wall of the screening box is hingedly provided with a loading cover plate that matches the opening. Both the loading cover plate and the unloading cover plate are provided with handles, and a torsion spring structure is arranged between the loading cover plate, the unloading cover plate and the screening box to facilitate the sealing of the interior of the screening box and prevent powder from overflowing.

[0007] As an improvement, the loading cover plate and the unloading cover plate are both made of transparent material, which facilitates observation by operators.

[0008] As an improvement, a mounting groove for matching the screening plate is provided in the center of the rotating plate, and a plurality of fastening bolts screwed to the screening plate are evenly provided on the bottom surface of the rotating plate, so as to facilitate replacement of the screening plate and meet different screening and printing requirements.

[0009] As an improvement, a fixed through hole connected to the cavity and cooperating with the collecting frame is provided on the front side of the base, limiting grooves are provided on the left and right outer walls of the collecting frame, and a group of limiting protrusions slidably connected to the limiting grooves are symmetrically provided in the cavity, so as to facilitate the removal of the collecting frame and the unloading of the powdered metal screened therein.

[0010] As an improvement, a conical conduit located at the bottom of the rotating plate is fixed in the screening box, and the bottom end of the conical conduit extends into the cavity and is located at the upper end of the collecting frame, so as to guide the screened metal powder and collect it in the collecting frame.

[0011] Compared with the prior art, the utility model has the following advantages: the vibration motor is used to realize rapid metal powder screening, thus improving production efficiency; and the cooperation of the hydraulic telescopic rod can automatically discharge the screened defective products, thus reducing manual operation and labor intensity;

[0012] The screening plate can be flexibly adjusted and replaced according to different metal powder types and specifications to meet different printing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a first stereoscopic diagram of a metal powder screening device for 3D printing according to the utility model.

[0014] Figure 2 This is a second stereoscopic view of a metal powder screening device for 3D printing according to the utility model.

[0015] Figure 3 This is a third stereoscopic view of a metal powder screening device for 3D printing of the utility model.

[0016] Figure 4 It is a cross-sectional stereoscopic diagram of a metal powder screening device for 3D printing of the utility model.

[0017] As shown in the figure: 1. Screening box; 2. Screening plate; 3. Base; 4. Cavity; 5. Collection frame; 6. Opening; 7. Rotating plate; 8. Vibration motor; 9. Load-bearing block; 10. Hydraulic telescopic rod; 11. Trapezoidal waste trough; 12. Unloading cover plate; 13. Loading cover plate; 14. Handle; 15. Installation groove; 16. Fastening bolt; 17. Fixing through hole; 18. Limiting groove; 19. Limiting protrusion; 20. Conical guide tube. DETAILED DESCRIPTION

[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0019] Embodiment 1

[0020] Combined with Figure 1-2 As shown in Figure 4, a metal powder screening device for 3D printing includes a screening box 1, a screening plate 2 is provided in the screening box 1, a base 3 is provided at the bottom of the screening box 1, a cavity 4 is provided in the base 3, a collecting frame 5 is provided in the cavity 4, the left and right side walls of the screening box 1 are both connected with openings 6, the left side wall of the screening box 1 is hinged with a lowering cover plate 12 matching the opening 6, the right side wall of the screening box 1 is hinged with a loading cover plate 13 matching the opening 6, the loading cover plate 13 and the lowering cover plate 12 are both provided with handles 14, the loading cover plate 13, the lowering cover plate 12 and the screening box are connected to each other. The torsion spring structure is arranged between the two bodies 1, the loading cover plate 13 and the unloading cover plate 12 are made of transparent materials, the left inner wall of the screening box 1 is hinged with a rotating plate 7 located on the opening 6, the screening plate 2 is screwed to the center of the rotating plate 7, the central part of the rotating plate 7 is connected with a mounting groove 15 for matching the screening plate 2, the bottom surface of the rotating plate 7 is evenly provided with a plurality of fastening bolts 16 screwed to the screening plate 2, the front outer wall of the screening box 1 is fixed with a vibration motor 8, the screening box 1 is fixed with a conical guide tube 20 located at the bottom end of the rotating plate 7, the bottom end of the conical guide tube 20 extends into the cavity 4 and is arranged at the upper end of the collecting frame 5;

[0021] Through the above structure, the loading cover plate 13 is rotated to open, the screening plate 2 is selected according to the type and specification of the metal powder, the screening plate 2 is placed in the installation groove 15, and is fixed with the fastening bolts 16, and then the metal powder to be screened is placed on the screening plate 2, the loading cover plate 13 is released to reset it with the cooperation of the torsion spring, and the vibration motor 8 is turned on. The vibration motor 8 cooperates with the screening plate 2 to screen the metal powder, and the metal powder that meets the requirements passes through the screening plate 2 into the conical guide tube 20, and finally enters the collection frame 5 for collection;

[0022] Embodiment 2

[0023] Based on the first embodiment, combined with the attached Figure 3As shown, a load-bearing block 9 located at the bottom of the rotating plate 7 is fixedly disposed on the right inner wall of the screening box 1, and a hydraulic telescopic rod 10 hinged to the bottom of the rotating plate 7 is hingedly disposed on the top surface of the load-bearing block 9, and a trapezoidal waste trough 11 located at the bottom of the opening 6 is fixedly disposed on the left outer wall of the screening box 1, and a fixed through hole 17 communicating with the cavity 4 and cooperating with the collecting frame 5 is disposed on the front side of the base 3, and limiting grooves 18 are disposed on the left and right outer walls of the collecting frame 5, and a group of limiting protrusions 19 slidably connected to the limiting grooves 18 are symmetrically disposed in the cavity 4;

[0024] Through the above structure, during the screening process, the operator continuously observes through the loading cover plate 13 and the unloading cover plate 12. After the screening is completed, the unloading cover plate 12 is rotated to open and the hydraulic telescopic rod 10 is started, so that the hydraulic telescopic rod 10 pushes the rotating plate 7 to tilt to different angles, and the metal powder residues remaining on the screening plate 2 automatically fall into the trapezoidal waste trough 11. Finally, the collecting frame 5 is pulled out of the cavity 4 to take the metal powder in the collecting frame 5.

[0025] When the utility model is implemented, firstly, the loading cover plate 13 is rotated to open, and the screening plate 2 is selected according to the type and specification of the metal powder, and the screening plate 2 is placed in the mounting groove 15 and fixed with the fastening bolts 16;

[0026] After that, the metal powder to be screened is placed on the screening plate 2, the loading cover 13 is released to reset it with the cooperation of the torsion spring, and the vibration motor 8 is turned on. The vibration motor 8 cooperates with the screening plate 2 to screen the metal powder. The metal powder that meets the requirements enters the conical conduit 20 through the screening plate 2, and finally enters the collecting frame 5 for collection. During the screening process, the operator constantly observes through the loading cover 13 and the unloading cover 12. After the screening is completed, the unloading cover 12 is turned open and the hydraulic telescopic rod 10 is started, so that the hydraulic telescopic rod 10 pushes the rotating plate 7 to tilt to different angles. The defective metal powder remaining on the screening plate 2 automatically falls into the trapezoidal waste trough 11, and finally the collecting frame 5 is pulled to take it out of the cavity 4, and the metal powder in the collecting frame 5 is taken.

[0027] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A metal powder screening device for 3D printing, comprising a screening box (1), wherein a screening plate (2) is provided in the screening box (1), characterized in that: The bottom end of the screening box (1) is provided with a base (3) in communication, a cavity (4) is provided in the base (3), a collecting frame (5) is provided in the cavity (4), the left and right side walls of the screening box (1) are both provided with openings (6), the left inner wall of the screening box (1) is hingedly provided with a rotating plate (7) located on the opening (6), the screening plate (2) is screwed to the center of the rotating plate (7), a vibration motor (8) is fixedly provided on the front outer wall of the screening box (1), a load-bearing block (9) located at the bottom end of the rotating plate (7) is fixedly provided on the right inner wall of the screening box (1), a hydraulic telescopic rod (10) hingedly provided on the top surface of the load-bearing block (9) and hinged to the bottom surface of the rotating plate (7), and a trapezoidal waste trough (11) located at the bottom end of the opening (6) is fixedly provided on the left outer wall of the screening box (1).

2. A metal powder screening device for 3D printing according to claim 1, characterized in that: The left side wall of the screening box (1) is hingedly provided with a material unloading cover plate (12) matching the opening (6), and the right side wall of the screening box (1) is hingedly provided with a material loading cover plate (13) matching the opening (6), and the material loading cover plate (13) and the material unloading cover plate (12) are both provided with handles (14), and torsion spring structures are both provided between the material loading cover plate (13), the material unloading cover plate (12) and the screening box (1).

3. A metal powder screening device for 3D printing according to claim 2, characterized in that: The loading cover plate (13) and the unloading cover plate (12) are both made of transparent materials.

4. The metal powder screening device for 3D printing according to claim 1, characterized in that: The rotating plate (7) is provided with a mounting groove (15) in the center thereof for matching with the screening plate (2), and a plurality of fastening bolts (16) for being screwed to the screening plate (2) are evenly arranged on the bottom surface of the rotating plate (7).

5. The metal powder screening device for 3D printing according to claim 1, characterized in that: The front side of the base (3) is provided with a fixing through hole (17) which is in communication with the cavity (4) and cooperates with the collection frame (5); the left and right outer walls of the collection frame (5) are both provided with limiting grooves (18); and a group of limiting protrusions (19) which are slidably connected to the limiting grooves (18) are symmetrically provided in the cavity (4).

6. The metal powder screening device for 3D printing according to claim 1, characterized in that: A conical conduit (20) located at the bottom end of the rotating plate (7) is fixedly provided in the screening box (1), and the bottom end of the conical conduit (20) extends into the cavity (4) and is located at the upper end of the collecting frame (5).

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