A screening device for 3D printing material

Abstract

The utility model discloses a kind of screening devices for 3D printing material, including counterweight seat, the top of counterweight seat is fixedly installed with base plate, the inside of base plate is provided with the screening box of floating type, the top of screening box is installed with cover, the inside of screening box is installed with the screening assembly of obliquely placed, screening assembly is used to the screening of metal powder, vibration motor is fixedly installed on the both sides outer wall of screening box, vibration motor is used to drive screening box to move up and down in the inside of base plate, the outside of screening box is fixedly installed with several elastic modules, and the bottom end of elastic module is installed on the outer wall of base plate top portion.The utility model is driven by the vibration motor of setting, can drive screening box to vibrate in the inside of base plate, to drive the screening effect of its internal screening assembly vibration to metal powder, utilize shock-absorbing mechanism simultaneously, can realize the floating of screening assembly in the inside of screening box, let the large particle powder that cannot be used for printing on the surface of filter plate smoothly discharge.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, specifically to a powder sieving device for 3D printing materials. Background Technology

[0002] In 3D printing, the raw material for printing is fine-particle metal powder. A key step in the reuse process is powder sieving, which requires separating out large particles of powder that cannot be used for printing, while the fine particles can be reused in subsequent printing processes.

[0003] According to the patent announcement number CN221413906U regarding a powder sieving device for 3D printing materials, this patent is existing technology. While it has the advantage of sieving 3D printing materials, its technical solution has the following drawbacks in practical use: Because the filter plate is located inside the sieving component and lacks mobility, unusable metal powder is trapped on its surface and discharged only through vibration. This results in uneven discharge and affects the sieving effect of the filter plate. Therefore, there is an urgent need to design a powder sieving device for 3D printing materials to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a powder screening device for 3D printing materials to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A powder sieving device for 3D printing materials includes a counterweight base, a base plate fixedly mounted on the top of the counterweight base, a floating screening box disposed inside the base plate, a cover mounted on the top of the screening box, an inclined screening component disposed inside the screening box for screening metal powder, a vibration motor fixedly mounted on both outer walls of the screening box for driving the screening box to move up and down inside the base plate, several elastic modules fixedly mounted on the outside of the screening box, with the bottom ends of the elastic modules mounted on the outer wall of the top of the base plate, a collection hopper one disposed on one side of the screening box, a collection hopper two disposed above the counterweight base, and a shock-absorbing mechanism extending through to the outside disposed inside the screening box for driving the screening component to move inside the screening box.

[0006] Preferably, the substrate has an opening at the top center, and the screening box is inserted into the opening.

[0007] Preferably, a slot is provided on the outer wall of one side of the substrate, and an insert block is provided on both sides of the bottom of the collecting hopper, the insert block being inserted into the slot.

[0008] Preferably, support columns are fixedly installed at the four bottom corners of the substrate, and the bottom ends of the support columns are fixed to the top outer wall of the counterweight base.

[0009] Preferably, a discharge bin is fixedly connected to the bottom of the screening box, and a sealing plate is inserted into one side of the bottom of the discharge bin. A discharge hopper located above the substrate is provided on one side of the screening box.

[0010] Preferably, the top of the collecting hopper is fixedly provided with a C-shaped enclosure, and the enclosure surrounds the outside of the discharge hopper.

[0011] Preferably, a hinge seat is symmetrically provided on one side of the cover, and the hinge seat is rotatably connected to the outer wall of the screening box. An observation window is provided in the middle of the cover, and a handle is fixedly provided on one side of the outer wall of the cover.

[0012] Preferably, the screening component includes a hinge fixed to the inner wall of one side of the screening box, and a frame located inside the screening box is installed on the hinge. A removable filter plate is installed inside the frame, and retractable corner protectors are provided on both inner walls of the screening box.

[0013] Preferably, an elastic connecting cover is installed on one side of the top of the second collecting hopper, and the top of the elastic connecting cover is fitted over the bottom of the discharge hopper.

[0014] Preferably, the shock-absorbing mechanism includes a top rod inserted into the screening box. The top rod has a bent structure. A support plate is fixedly installed at the top of the top rod, and the support plate is located below one side of the screening assembly. A spring is provided between the top rod and the screening box, and a spring is fixed above the counterweight seat at the bottom of the top rod.

[0015] In the above technical solution, the powder sieving device for 3D printing materials provided by this utility model has the following beneficial effects: (1) By setting a vibration motor, the screening box can be driven to vibrate inside the substrate, thereby driving the screening component inside to vibrate and achieve the screening effect of metal powder. At the same time, by using the damping mechanism, the screening component can float inside the screening box, allowing large particles of powder that cannot be used for printing to be smoothly discharged from the surface of the filter plate, thus improving the filtering effect of the filter plate on metal powder.

[0016] (2) By using the elastic module, spring one and spring two, the screening box can be made to vibrate through the elastic module. By using spring one and spring two, the top rod can be moved up and down inside the screening box. Thus, while the screening box vibrates, the filter plate can also be made to shake up and down inside it. By using the clever linkage motion, the filtration and screening effect is improved.

[0017] (3) By using the first collection hopper, large particles of powder that cannot be used for printing can be collected. By using the second collection hopper, large particles of powder that can be used for printing can be collected. The design of the enclosure and the elastic connecting cover enables better collection of powder and avoids generating a large amount of dust. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of an angle structure for an embodiment of a powder sieving device for 3D printing materials according to the present invention.

[0020] Figure 2 This is another structural schematic diagram of an embodiment of a powder sieving device for 3D printing materials according to the present invention.

[0021] Figure 3 This is a schematic diagram of the counterweight and substrate structure provided in an embodiment of a powder sieving device for 3D printing materials according to the present invention.

[0022] Figure 4 This is a cross-sectional view of the screening box structure provided in an embodiment of a powder screening device for 3D printing materials according to this utility model.

[0023] Figure 5 This is a schematic diagram of the open state structure of a powder sieving device for 3D printing materials according to an embodiment of this utility model.

[0024] 1. Counterweight base; 2. Base plate; 21. Through-hole; 22. Slot; 23. Support column; 3. Screening box; 31. Discharge bin; 32. Sealing plate; 33. Discharge hopper; 4. Cover; 41. Hinge seat; 42. Observation window; 43. Handle; 5. Screening assembly; 51. Hinge; 52. Corner bushing; 53. Enclosure frame; 54. Filter plate; 6. Vibration motor; 7. Elastic module; 8. Collection hopper one; 81. Enclosure; 82. Insert block; 9. Collection hopper two; 91. Elastic connecting cover; 10. Shock absorption mechanism; 101. Top rod; 102. Support plate; 103. Spring one; 104. Spring two. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-5As shown in the figure, the 3D printing material sieving device provided by this utility model includes a counterweight 1, a base plate 2 fixedly installed on the top of the counterweight 1, a floating screening box 3 arranged inside the base plate 2, a cover 4 installed on the top of the screening box 3, an inclined screening component 5 installed inside the screening box 3, the screening component 5 being used to sieve metal powder, a vibration motor 6 fixedly installed on both outer walls of the screening box 3, the vibration motor 6 being used to drive the screening box 3 to move up and down inside the base plate 2, a plurality of elastic modules 7 fixedly installed on the outside of the screening box 3, and the bottom end of the elastic modules 7 being installed on the top outer wall of the base plate 2, a collection hopper 1 8 arranged on one side of the screening box 3, a collection hopper 2 9 arranged above the counterweight 1, and a shock-absorbing mechanism 10 extending to the outside arranged at the bottom inside the screening box 3, the shock-absorbing mechanism 10 being used to drive the screening component 5 to move inside the screening box 3.

[0027] As one embodiment of the present invention, it includes a counterweight base 1, which can be a cast iron structure, improving the placement stability of the overall device and having a shock absorption effect. A base plate 2 is fixedly installed on the top of the counterweight base 1, and support columns 23 are fixedly installed at the four corners of the bottom of the base plate 2. The bottom end of the support column 23 is fixed to the top outer wall of the counterweight base 1. The base plate 2 is fixed to the top of the counterweight base 1 by the support columns 23. There are four support columns 23. The base plate 2, support columns 23 and counterweight base 1 constitute the frame structure of the device.

[0028] In another embodiment of this utility model, a floating screening box 3 is provided inside the substrate 2. An opening 21 is provided at the top center of the substrate 2. The screening box 3 moves up and down inside the opening 21 and is inserted into the opening 21. A discharge bin 31 is fixedly connected to the bottom of the screening box 3, and a sealing plate 32 is inserted into one side of the bottom of the discharge bin 31. The discharge bin 31 has a structure that is larger at the top and smaller at the bottom. An extension tube is installed at the bottom of the discharge bin 31 to facilitate the installation and use of the elastic connecting cover 91. A discharge hopper 33 is provided on one side of the screening box 3 above the substrate 2 to discharge unusable metal powder and allow it to enter the collection hopper 8.

[0029] In another embodiment of this utility model, a cover 4 is installed on the top of the screening box 3. A hinge seat 41 is symmetrically arranged on one side of the cover 4, and the hinge seat 41 is rotatably connected to the outer wall of the screening box 3. An observation window 42 is provided in the middle of the cover 4. The observation window 42 is a glass plate or an acrylic plate, which facilitates the observation of the metal powder inside. A handle 43 is fixedly provided on one side of the outer wall of the cover 4. The cover 4 is used to seal the top of the screening box 3 to avoid dust generation and form a closed cavity structure on the top of the screening box 3.

[0030] In one embodiment of this utility model, an inclined screening component 5 is installed inside the screening box 3. The screening component 5 is used to screen metal powder. The screening component 5 includes a hinge 51 fixed on one inner wall of the screening box 3, and a frame 53 located inside the screening box 3 is installed on the hinge 51. The frame 53 can swing up and down inside the screening box 3 through the hinge 51. A detachable filter plate 54 is installed inside the frame 53. The filter plate 54 is used to achieve the screening effect of metal powder. The detachable structure makes it easy to replace the filter plate 54. Retractable corner bushings 52 are provided on both inner walls of the screening box 3. The corner bushings 52 are elastic structures that can guide the flow of metal powder above the filter plate 54. When the filter plate 54 rotates up and down, the corner bushings 52 can retract upward to ensure the rationality of the movement.

[0031] In another embodiment of this utility model, a vibration motor 6 is fixedly installed on both outer walls of the screening box 3. The vibration motor 6 is used to drive the screening box 3 to move up and down inside the substrate 2. Several elastic modules 7 are fixedly installed on the outside of the screening box 3, and the bottom end of the elastic module 7 is installed on the outer wall of the top of the substrate 2. The elastic module 7 is composed of a mounting block and a spring. As the vibration motor 6 vibrates, the screening box 3 can vibrate up and down under the action of the elastic module 7, so as to achieve the screening effect of the metal powder inside.

[0032] In another embodiment of this utility model, a collection hopper 8 is provided on one side of the screening box 3, and a slot 22 is provided on the outer wall of one side of the substrate 2. Insert blocks 82 are provided on both sides of the bottom of the collection hopper 8. The insertion blocks 82 on both sides of the bottom of the collection hopper 8 are inserted into the slot 22 to fix the collection hopper 8 in place. A C-shaped enclosure 81 is fixedly provided on the top of the collection hopper 8, and the enclosure 81 surrounds the outside of the discharge hopper 33. The bottom of the discharge hopper 33 is inclined downwards to facilitate discharge. Using the enclosure 81, the metal powder above the filter plate 54 can flow smoothly into the interior of the collection hopper 8.

[0033] In one embodiment of this utility model, a collection hopper 2 9 is provided above the counterweight seat 1. An elastic connecting cover 91 is installed on one side of the top of the collection hopper 2 9. The top of the elastic connecting cover 91 is fitted over the bottom of the discharge bin 31. After the collection hopper 2 9 is placed above the counterweight seat 1, the elastic connecting cover 91 is pressed down so that the elastic connecting cover 91 is fitted over the bottom of the discharge bin 31, which facilitates the collection of metal powder inside the discharge bin 31 and avoids dust generation. A magnetic block is provided at the bottom of the collection hopper 2 9 so that the collection hopper 2 9 can be reliably placed above the counterweight seat 1.

[0034] In another embodiment of this utility model, a shock-absorbing mechanism 10 extending to the outside is provided at the lower interior of the screening box 3. The shock-absorbing mechanism 10 is a linkage structure that moves with the vibration of the screening box 3. The shock-absorbing mechanism 10 is used to drive the screening component 5 to move inside the screening box 3. The damping mechanism 10 includes a top rod 101 inserted inside the screening box 3. The top rod 101 has a bent structure, and a support plate 102 is fixedly installed at the top of the top rod 101. The support plate 102 increases the contact area between the top of the top rod 101 and the filter plate 54. The support plate 102 is located below one side of the screening assembly 5. A spring 103 is provided between the top rod 101 and the screening box 3, and a spring 104 is fixed above the counterweight 1 at the bottom of the top rod 101. When the spring 103 is stretched, the spring 104 is compressed, resulting in the downward movement of the top rod 101. Under the rebound action of the spring 103 and the spring 104, the top rod 101 can generate up-and-down reciprocating motion. The top rod 101 can drive the upper end of the filter plate 54 to reciprocate.

[0035] In use, the operator flips the cover 4 upwards to open it, pours the metal powder into the screening box 3, starts the vibration motor 6, and uses the vibration motor 6 to drive the screening box 3 to vibrate in the up and down direction. The screening box 3 vibrates on the elastic module 7, and the filter plate 54 inside the screening box 3 achieves the screening effect of metal powder. Large particles of powder that cannot be used for printing and are located above the filter plate 54 are discharged from the discharge hopper 33 into the collection hopper 1 8, and the large particles of powder that can be used for printing that flow into the discharge bin 31 through the filter plate 54 are discharged into the collection hopper 2 9. When the screening box 3 vibrates up and down, the presence of the damping mechanism 10 causes the frame 53 to drive the tray 102 to descend. At this time, spring 103 is compressed and spring 204 is stretched, which causes the high end of the filter plate 54 to move up and down. This allows the large powder particles that cannot be used for printing on the upper surface of the filter plate 54 to be smoothly discharged into the collection hopper 8, improving the smoothness of material discharge.

[0036] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A powder sieving device for 3D printing materials, comprising a counterweight (1), characterized in that, A base plate (2) is fixedly installed on the top of the counterweight (1). A floating screening box (3) is provided inside the base plate (2). A cover (4) is installed on the top of the screening box (3). An inclined screening component (5) is installed inside the screening box (3). The screening component (5) is used to screen metal powder. Vibration motors (6) are fixedly installed on both outer walls of the screening box (3). The vibration motors (6) are used to drive the screening box (3) to move up and down inside the base plate (2). Several elastic modules (7) are fixedly installed on the outside of the screening box (3). The bottom end of the elastic module (7) is installed on the outer wall of the top of the base plate (2). A collection hopper one (8) is provided on one side of the screening box (3). A collection hopper two (9) is provided above the counterweight (1). A shock-absorbing mechanism (10) that extends to the outside is provided at the bottom inside the screening box (3). The shock-absorbing mechanism (10) is used to drive the screening component (5) to move inside the screening box (3).

2. The powder sieving device for 3D printing materials according to claim 1, characterized in that, The substrate (2) has an opening (21) at the top center, and the screening box (3) is inserted into the opening (21).

3. The powder sieving device for 3D printing materials according to claim 1, characterized in that, A slot (22) is provided on the outer wall of one side of the substrate (2), and a plug (82) is provided on both sides of the bottom of the collection hopper (8), and the plug (82) is inserted into the slot (22).

4. The powder sieving device for 3D printing materials according to claim 1, characterized in that, Support columns (23) are fixedly installed at the four bottom corners of the base plate (2), and the bottom end of the support column (23) is fixed on the top outer wall of the counterweight base (1).

5. A powder sieving device for 3D printing materials according to claim 1, characterized in that, The bottom of the screening box (3) is fixedly connected to a discharge bin (31), and a sealing plate (32) is inserted into one side of the bottom end of the discharge bin (31). A discharge hopper (33) located above the substrate (2) is provided on one side of the screening box (3).

6. A powder sieving device for 3D printing materials according to claim 5, characterized in that, The top of the collection hopper (8) is fixedly provided with a C-shaped enclosure (81), and the enclosure (81) surrounds the outside of the discharge hopper (33).

7. A powder sieving device for 3D printing materials according to claim 1, characterized in that, A hinge seat (41) is symmetrically provided on one side of the cover (4), and the hinge seat (41) is rotatably connected to the outer wall of the screening box (3). An observation window (42) is provided in the middle of the cover (4), and a handle (43) is fixedly provided on one side of the outer wall of the cover (4).

8. A powder sieving device for 3D printing materials according to claim 1, characterized in that, The screening component (5) includes a hinge (51) fixed on the inner wall of one side of the screening box (3), and a frame (53) located inside the screening box (3) is installed on the hinge (51). A removable filter plate (54) is installed inside the frame (53), and retractable corner bushings (52) are provided on both sides of the inner wall of the screening box (3).

9. A powder sieving device for 3D printing materials according to claim 5, characterized in that, An elastic connecting cover (91) is installed on one side of the top of the collection hopper (9), and the top of the elastic connecting cover (91) is fitted outside the bottom of the discharge hopper (31).

10. A powder sieving device for 3D printing materials according to claim 1, characterized in that, The shock-absorbing mechanism (10) includes a top rod (101) inserted into the screening box (3). The top rod (101) has a bent structure. A support plate (102) is fixedly installed at the top of the top rod (101), and the support plate (102) is located below the screening assembly (5) on one side. A spring (103) is provided between the top rod (101) and the screening box (3), and a spring (104) is fixed above the counterweight seat (1) at the bottom of the top rod (101).

Images