A 3D printed sand recycling device

Abstract

The utility model relates to 3D printing technical field discloses a kind of sand recovery devices of 3D printing, including box, the box upper surface is fixedly connected with feed hopper, the box bottom is fixedly connected with discharge pipe, the box bottom is fixedly connected with collection box, the collection box inside is slidably connected with vibrating screen, the box inside is provided with crushing assembly, and the collection box side wall is provided with fixed component;The crushing assembly includes two crushing rollers, one side the crushing roller side wall rotationally connected in the box inside, and the box inside is slidably connected with sliding frame.In the utility model, the circular gear on the rotating rod is engaged with the rack of sliding frame by motor two drive, so that the sliding frame drives one side crushing roller to slide to adjust the distance between two crushing rollers, so as to achieve flexible adjustment of crushing gap according to sand material agglomeration size, realize the effect of targeted crushing, and the accuracy of sand crushing and the adaptability of equipment to different working conditions are improved by the above structure.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a 3D printed sand recycling device. Background Technology

[0002] The application of 3D printing technology (especially sand mold 3D printing) generates a large amount of waste sand, including uncured loose sand, residual waste sand after printing, and excess sand after mold cleaning. Directly discarding this sand not only wastes resources but also causes environmental pollution due to binder residue. Therefore, developing efficient 3D printing sand recycling devices is crucial for reducing production costs and achieving resource recycling. Crushing and removing clumps from waste sand is a key step in the recycling process.

[0003] In existing technologies, fixed-gap double-roll crushing mechanisms are commonly used to break up agglomerated sand. The technical principle involves a motor driving two parallel crushing rollers to rotate in the same or opposite directions. The squeezing and shearing forces between the roller surfaces break up the falling agglomerated sand, which then enters the subsequent screening stage. This structure achieves preliminary crushing by directly applying mechanical force to the agglomerated material and is widely used in sand pretreatment applications.

[0004] However, existing fixed-gap crushing roller structures have significant limitations: due to the large variation in the size of 3D-printed sand clumps (from loose clumps as small as a few millimeters to hard blocks as large as several centimeters), a fixed roller distance cannot accommodate clumps of different sizes. For small clumps, excessive crushing can easily lead to sand pulverization, reducing the utilization rate of recyclable sand; for large clumps, incomplete crushing can leave residues, which can then clog subsequent screening equipment, affecting the efficiency of the entire recycling process. Therefore, a 3D-printed sand recycling device is proposed to solve these problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a 3D-printed sand recycling device, which aims to improve the problems of poor adaptability of fixed-spacing crushing rollers to agglomerated sand of different sizes, and the tendency to over-crush or under-crush.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A 3D-printed sand recycling device includes a box, a feeding hopper fixedly connected to the upper surface of the box, a discharge pipe fixedly connected to the bottom of the box, a collection box fixedly connected to the bottom of the box, a vibrating screen slidably connected inside the collection box, a crushing component arranged inside the box, and a fixing component arranged on the side wall of the collection box. The crushing assembly includes two crushing rollers. One side wall of the crushing roller is rotatably connected to the inside of the housing. A sliding frame is slidably connected inside the housing. The other side wall of the crushing roller is rotatably connected to the inside of the sliding frame. A bevel gear one is fixedly connected to the side wall of each crushing roller. A fixing cover is fixedly connected to the side wall of the housing. A motor one is fixedly connected to the side wall of the fixing cover. A connecting rod is fixedly connected to the output end of the motor one. A bevel gear two is fixedly connected to the side wall of the connecting rod. A bevel gear three is rotatably connected to the side wall of the sliding frame.

[0007] As a further description of the above technical solution: The fixing component includes a rotating block and a fixing sleeve. The side wall of the rotating block is rotatably connected to the side wall of the collection box, and the side wall of the fixing sleeve is fixedly connected to the inside of the rotating block.

[0008] As a further description of the above technical solution: A rotating rod is rotatably connected to the side wall of the housing, a spur gear is fixedly connected to the side wall of the rotating rod, a second motor is fixedly connected to the side wall of the housing, the output end of the second motor is fixedly connected to one end of the rotating rod, and a rack is fixedly connected to the side wall of the sliding frame, the rack meshing with the spur gear.

[0009] As a further description of the above technical solution: The side wall of the connecting rod is rotatably connected inside the fixed cover. The first bevel gear, the second bevel gear, and the third bevel gear are all located inside the fixed cover. The inner wall of the third bevel gear is slidably connected to the side wall of the connecting rod. The first bevel gear meshes with the second and third bevel gears.

[0010] As a further description of the above technical solution: The collection box is equipped with a vibration motor located below the vibrating screen. A drawer is slidably connected inside the collection box, and a waste bin is fixedly connected to the side wall of the collection box.

[0011] As a further description of the above technical solution: The fixed sleeve has a sliding connection to a pressing block inside, and a sliding column is fixedly connected to one end of the pressing block.

[0012] As a further description of the above technical solution: A spring is fitted on the side wall of the sliding column. One end of the spring is fixedly connected inside the fixed sleeve, and the other end of the spring is fixedly connected to the side wall of the pressing block.

[0013] As a further description of the above technical solution: One end of the sliding column is fixedly connected to a base, the side wall of the base is slidably connected to the inside of the fixed sleeve, the fixed sleeve is provided with a ball, the side wall of the base fits against the side wall of the ball, the side wall of the fixed sleeve is slidably connected to the inside of the vibrating screen, and the side wall of the ball is slidably connected to the inside of the vibrating screen.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the spur gear on the rotating rod driven by the second motor meshes with the rack of the sliding frame, causing the sliding frame to drive the crushing roller on one side to slide and adjust the distance between the two crushing rollers. At the same time, the transmission is maintained by the sliding connection between the bevel gear and the connecting rod. This achieves the effect of flexibly adjusting the crushing gap according to the size of the sand agglomerates and realizing targeted crushing. It solves the problem that the existing crushing rollers with fixed spacing have poor adaptability to sand agglomerates of different sizes and are prone to over-crushing or incomplete crushing. The above structure improves the accuracy of sand crushing and the adaptability of the equipment to different working conditions.

[0015] 2. In this utility model, the pressing block, in conjunction with the spring-driven ball bearing, is used to achieve a tight fit with the vibrating screen mounting groove to achieve fixation. Furthermore, pressing the pressing block and rotating the rotating block in the opposite direction allows for quick disassembly and assembly, making the vibrating screen installation stable and replacement convenient. This achieves the effect of efficient maintenance of the vibrating screen, solving the problems of cumbersome disassembly and assembly, time-consuming and labor-intensive operation of existing vibrating screens. The above structure improves the maintenance efficiency of the equipment. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of a 3D-printed sand recycling device proposed in this utility model; Figure 2 This is a cross-sectional structural diagram of the top of the box of a 3D-printed sand recycling device proposed in this utility model; Figure 3 This is a schematic diagram of the structure of the side wall of the box of a 3D-printed sand recycling device proposed in this utility model; Figure 4 This is a schematic diagram of the structure of the collection box of a 3D-printed sand recycling device proposed in this utility model; Figure 5 This is a top view structural diagram of the collection box of a 3D-printed sand recycling device proposed in this utility model; Figure 6 for Figure 5 Enlarged view of point A in the middle.

[0017] Legend: 1. Box body; 2. Feed hopper; 3. Discharge pipe; 4. Collection box; 5. Vibrating screen; 6. Crushing roller; 7. Fixing cover; 8. Motor 1; 9. Connecting rod; 10. Bevel gear 1; 11. Bevel gear 2; 12. Sliding frame; 13. Bevel gear 3; 14. Rotating rod; 15. Motor 2; 16. Circular gear; 17. Rack; 18. Vibrating motor; 19. Rotating block; 20. Fixing sleeve; 21. Pressing block; 22. Sliding column; 23. Spring; 24. Base; 25. Ball bearing; 26. Drawer; 27. Waste bin. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-5 This utility model provides an embodiment of a 3D-printed sand recycling device, including a box 1. The box 1 serves to provide a mounting carrier and protect internal components. A feed hopper 2 is fixedly connected to the upper surface of the box 1. The feed hopper 2 guides the sand to fall into the box 1. A discharge pipe 3 is fixedly connected to the bottom of the box 1. A collection box 4 is fixedly connected to the bottom of the box 1. The collection box 4 is used to collect the screened sand and waste. A vibrating screen 5 is slidably connected inside the collection box 4. The vibrating screen 5 is used to separate qualified particles and impurities in the sand through vibration, achieving the effect of sand purification. A crushing component is provided inside the box 1. The crushing component is used to break up lumps in the sand, preparing for subsequent screening. A fixing component is provided on the side wall of the collection box 4. The fixing component is used to fix the vibrating screen 5 and prevent it from loosening during vibration. The crushing assembly includes two crushing rollers 6. The crushing rollers 6 generate squeezing and shearing forces through rotation, breaking up agglomerated sand. One side wall of the crushing roller 6 is rotatably connected to the inside of the housing 1. A sliding frame 12 is slidably connected inside the housing 1, supporting one side of the crushing roller 6 and driving it to slide, thus adjusting the distance between the two crushing rollers 6. A bevel gear 10 is fixedly connected to the side wall of each crushing roller 6, transmitting power to the crushing roller 6 to drive its rotation. A fixed cover 7 is fixedly connected to the side wall of the housing 1, and a motor 8 is fixedly connected to the side wall of the fixed cover 7. The motor 8 provides power for the rotation of the crushing roller 6, acting as a power source. A connecting rod 9 is fixedly connected to the output end of the motor 8, transmitting power from the motor 8 to achieve rotation. The effect of force transmission is achieved by fixing a bevel gear 2 11 to the side wall of the connecting rod 9 and rotating a bevel gear 3 13 to the side wall of the sliding frame 12. The bevel gear 3 13 is used to cooperate with the bevel gear 2 11 to transmit power to the bevel gear 10 on the corresponding side, ensuring the effect of continuous power transmission when the sliding frame 12 moves. The side wall of the connecting rod 9 is rotatably connected inside the fixed cover 7. The bevel gear 1 10, bevel gear 2 11, and bevel gear 3 13 are all located inside the fixed cover 7. The inner wall of the bevel gear 3 13 is slidably connected to the side wall of the connecting rod 9. The bevel gear 3 13 cooperates with the connecting rod 9 to slide and rotate, achieving the effect of maintaining power transmission when the sliding frame 12 moves. The bevel gear 1 10 meshes with the bevel gear 2 11 and bevel gear 3 13. The bevel gear 1 10 cooperates with the bevel gear 2 11 and bevel gear 3 13 to perform meshing transmission, achieving the effect of driving the two crushing rollers 6 to rotate in opposite directions. A rotating rod 14 is rotatably connected to the side wall of the housing 1. A circular gear 16 is fixedly connected to the side wall of the rotating rod 14. A second motor 15 is fixedly connected to the side wall of the housing 1. The second motor 15 is used to provide power for adjusting the spacing of the crushing roller 6. As an adjustment power source, the output end of the second motor 15 is fixedly connected to one end of the rotating rod 14. The rotating rod 14 rotates in conjunction with the second motor 15, thereby driving the circular gear 16 to rotate. A rack 17 is fixedly connected to the side wall of the sliding frame 12. The rack 17 is used to cooperate with the circular gear 16 to drive the sliding frame 12 to slide, thereby achieving the effect of spacing adjustment. The rack 17 meshes with the circular gear 16. The rack 17 meshes with the circular gear 16 to achieve the effect of driving the sliding frame 12 to slide smoothly. The collection box 4 is equipped with a vibration motor 18, which provides vibration power to drive the vibrating screen 5 to vibrate at high frequency. The vibration motor 18 is located below the vibrating screen 5. The vibration motor 18 works with the vibrating screen 5 to achieve the effect of fully dispersing and screening the sand on the vibrating screen 5. The collection box 4 is slidably connected to a drawer 26, which is used to collect qualified sand that has passed through the vibrating screen 5 for easy retrieval. The collection box 4 is fixedly connected to a waste bin 27, which is used to collect the impurities and incompletely broken clumps remaining on the vibrating screen 5, achieving the effect of separating and collecting sand and waste. Reference Figures 4-6 The fixing assembly includes a rotating block 19 and a fixing sleeve 20. The rotating block 19 drives the fixing sleeve 20 to rotate, achieving the connection or separation between the fixing sleeve 20 and the vibrating screen 5. The side wall of the rotating block 19 is rotatably connected to the side wall of the collection box 4. The rotating block 19 rotates in coordination with the collection box 4, achieving the effect of adjusting the position of the fixing sleeve 20. The side wall of the fixing sleeve 20 is fixedly connected inside the rotating block 19. A pressing block 21 is slidably connected inside the fixing sleeve 20. A sliding column 22 is fixedly connected to one end of the pressing block 21. The sliding column 22 is used to transmit the force of the pressing block 21. A spring 23 is sleeved on the side wall of the sliding column 22. The spring 23 provides a restoring elastic force. One end of the spring 23 is fixedly connected inside the fixing sleeve 20, and the other end of the spring 23 is fixedly connected to the side wall of the pressing block 21. The spring 23 extends and retracts in coordination with the pressing block 21. The movement achieves the effect of automatically resetting the pressing block 21. One end of the sliding column 22 is fixedly connected to the base 24. The side wall of the base 24 is slidably connected to the inside of the fixing sleeve 20. The fixing sleeve 20 is provided with a ball bearing 25. The ball bearing 25 is used to generate friction through close contact with the vibrating screen 5, thereby fixing the vibrating screen 5. The side wall of the base 24 is in contact with the side wall of the ball bearing 25. The base 24 and the ball bearing 25 perform a squeezing movement, which achieves the effect of making the ball bearing 25 fit tightly against the vibrating screen 5. The side wall of the fixing sleeve 20 is slidably connected to the inside of the vibrating screen 5. The fixing sleeve 20 and the vibrating screen 5 perform an insertion and removal movement, which achieves the effect of quickly installing or removing the vibrating screen 5. The side wall of the ball bearing 25 is slidably connected to the inside of the vibrating screen 5. The ball bearing 25 and the vibrating screen 5 perform a clamping movement, which enhances the installation stability of the vibrating screen 5.

[0020] Working principle: The waste sand to be recycled is fed into the device through the feed hopper 2 on the upper surface of the box 1. Under the action of gravity, the sand falls to the crushing component inside the box 1. The motor 8 is fixed to the side wall of the fixed cover 7. Its output end drives the connecting rod 9 to rotate. The bevel gear 11 on the connecting rod 9 rotates synchronously. Since the bevel gear 11 meshes with the bevel gear 10 and bevel gear 13 on the two crushing rollers 6 (the bevel gear 13 is slidably connected to the connecting rod 9 and remains meshed as the sliding frame 12 moves), the two crushing rollers 6 are driven to rotate in opposite directions to squeeze and shear the falling sand and break up the lumps.

[0021] If different sizes of lumps need to be accommodated, the second motor 15 is started and drives the rotating rod 14 to rotate. The sprocket 16 on the rotating rod 14 meshes with the rack 17 on the side wall of the sliding frame 12, driving the sliding frame 12 to slide inside the box 1, thereby changing the distance between the two crushing rollers 6 (one crushing roller 6 is fixed, and the other side moves with the sliding frame 12 to achieve targeted crushing).

[0022] The crushed sand falls through the discharge pipe 3 at the bottom of the box 1 onto the vibrating screen 5 inside the collection box 4. The vibrating motor 18 inside the collection box 4 works, driving the vibrating screen 5 to vibrate at high frequency, which disperses the sand on the screen surface. Sand particles that meet the particle size requirements fall through the screen into the drawer 26 below, completing the recycling. Large particles or clumps that do not pass through the screen are pushed into the waste bin 27 on the side wall of the collection box 4 under the action of vibration, realizing the separation of sand and impurities.

[0023] The vibrating screen 5 is stably installed in the collection box 4 by a fixing component: the rotating block 19 of the fixing component is rotatably connected to the side wall of the collection box 4. By pressing the pressing block 21, the fixing sleeve 20 is embedded in the mounting groove on the edge of the vibrating screen 5. Then, the pressing block 21 is released, and the sliding column 22 is driven to slide by the spring 23, so that the base 24 squeezes the ball 25. The ball 25 is tightly attached to the inner wall of the mounting groove of the vibrating screen 5, and the vibrating screen 5 is fixed by friction to prevent it from loosening during vibration. When disassembling, simply press the pressing block 21 again to release the pressure on the ball 25, and then rotate the rotating block 19 in the opposite direction to make the fixing sleeve 20 disengage from the mounting groove of the vibrating screen 5. The vibrating screen 5 can then be quickly removed or replaced, making the operation convenient.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A 3D-printed sand recycling device, comprising a housing (1), characterized in that: The upper surface of the box (1) is fixedly connected to a feeding hopper (2), the bottom of the box (1) is fixedly connected to a discharge pipe (3), the bottom of the box (1) is fixedly connected to a collection box (4), a vibrating screen (5) is slidably connected inside the collection box (4), a crushing component is provided inside the box (1), and a fixing component is provided on the side wall of the collection box (4). The crushing assembly includes two crushing rollers (6). One side of the crushing roller (6) is rotatably connected to the inside of the housing (1). A sliding frame (12) is slidably connected inside the housing (1). The side of the crushing roller (6) is rotatably connected to the inside of the sliding frame (12). A bevel gear (10) is fixedly connected to the side of each crushing roller (6). A fixed cover (7) is fixedly connected to the side of the housing (1). A motor (8) is fixedly connected to the side of the fixed cover (7). A connecting rod (9) is fixedly connected to the output end of the motor (8). A bevel gear (11) is fixedly connected to the side of the connecting rod (9). A bevel gear (13) is rotatably connected to the side of the sliding frame (12).

2. The 3D-printed sand recycling device according to claim 1, characterized in that: The fixing component includes a rotating block (19) and a fixing sleeve (20). The side wall of the rotating block (19) is rotatably connected to the side wall of the collection box (4), and the side wall of the fixing sleeve (20) is fixedly connected to the inside of the rotating block (19).

3. The 3D-printed sand recycling device according to claim 1, characterized in that: A rotating rod (14) is rotatably connected to the side wall of the housing (1). A spur gear (16) is fixedly connected to the side wall of the rotating rod (14). A second motor (15) is fixedly connected to the side wall of the housing (1). The output end of the second motor (15) is fixedly connected to one end of the rotating rod (14). A rack (17) is fixedly connected to the side wall of the sliding frame (12). The rack (17) meshes with the spur gear (16).

4. The 3D-printed sand recycling device according to claim 1, characterized in that: The side wall of the connecting rod (9) is rotatably connected to the inside of the fixed cover (7). The first bevel gear (10), the second bevel gear (11), and the third bevel gear (13) are all located inside the fixed cover (7). The inner wall of the third bevel gear (13) is slidably connected to the side wall of the connecting rod (9). The first bevel gear (10) meshes with the second bevel gear (11) and the third bevel gear (13).

5. A 3D-printed sand recycling device according to claim 1, characterized in that: The collection box (4) is equipped with a vibration motor (18) located below the vibrating screen (5). A drawer (26) is slidably connected inside the collection box (4), and a waste bin (27) is fixedly connected to the side wall of the collection box (4).

6. A 3D-printed sand recycling device according to claim 2, characterized in that: The fixed sleeve (20) has a sliding connection to a pressing block (21), and a sliding column (22) is fixedly connected to one end of the pressing block (21).

7. A 3D-printed sand recycling device according to claim 6, characterized in that: A spring (23) is fitted on the side wall of the sliding column (22). One end of the spring (23) is fixedly connected inside the fixed sleeve (20), and the other end of the spring (23) is fixedly connected to the side wall of the pressing block (21).

8. A 3D-printed sand recycling device according to claim 7, characterized in that: One end of the sliding column (22) is fixedly connected to a base (24). The side wall of the base (24) is slidably connected to the inside of the fixed sleeve (20). A ball (25) is provided inside the fixed sleeve (20). The side wall of the base (24) is in contact with the side wall of the ball (25). The side wall of the fixed sleeve (20) is slidably connected to the inside of the vibrating screen (5). The side wall of the ball (25) is slidably connected to the inside of the vibrating screen (5).

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