3D printing platform self-adaptive leveling device

Abstract

The invention discloses a self-adaptive leveling device for a 3D printing platform, and relates to the technical field of printing equipment. The device comprises a base, a supporting platform is arranged at the top of the base, and a bubble level is installed on one side of the supporting platform; a supporting mechanism is arranged on the top of the base and comprises a bottom plate installed on the top of the base. Through the arrangement of the spherical shell and the movable ball, the inclination angle of the supporting column can be flexibly adjusted, the situation that the platform inclines due to uneven weight distribution is avoided, the stability of the 3D printing platform is remarkably improved, through the linkage design of the elastic piece, the piston rod and the compressed gas tank, reverse acting force is rapidly provided when the platform inclines, automatic reset is achieved, and the working efficiency is improved. The four groups of balancing weights are matched with the traction rope, so that the stress of the four corners of the platform is dynamically balanced, the high-precision horizontal state can still be maintained under the complex working condition, and the problem that a traditional leveling device is easily interfered by external force is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of printing devices, and particularly relates to a 3D printing platform adaptive leveling device. Background Art

[0002] The 3D printing support table is an important component indispensable in the 3D printing process. It is mainly used to provide stable support for the model during printing. When printing a model with a suspended structure or complex geometric shape, the support table can prevent the model from deforming or collapsing due to gravity. The support table usually has good flatness and stability, can ensure the accurate position of the model during printing, and its material generally matches the printing material or has appropriate physical properties, facilitating easy removal after printing without causing excessive damage to the model. The design and performance of the support table directly affect the quality and success rate of 3D printing, and are one of the key factors to ensure the smooth progress of printing.

[0003] A Chinese patent application (or patent) with the publication number CN206983291U discloses a 3D printing platform automatic leveling structure and a printer, including: a printing platform, on the printing surface of the printing platform, there are at least three induction contacts, and the induction contacts are connected to each other and not on the same straight line; a print head, the print head is a conductive print head, and the print head is located on the same side of the printing surface of the printing platform, solving the problems that the current manual or semi-automatic leveling of the 3D printing platform is not only time-consuming but also has a high labor cost.

[0004] However, the following problems still exist in the implementation of the above device: when adjusting the angle of the printing platform by turning the adjustment knob, the weight of the entire platform will press on the top of the spring, and since the spring has elasticity, when the weight of the printing sample on the top of the platform is unbalanced, the entire platform will also tilt accordingly. At this time, after rotating the adjustment knob to tighten the spring for adjustment, the printing platform will still shake when affected by vibration. Moreover, when detecting the coordinates of the current position of the printing platform through the position detector, an electronic sensor is required, and in a high-temperature and dusty environment, the sensor is easily interfered, resulting in inaccurate adjustment of the printing platform.

[0005] Therefore, we provide a 3D printing platform adaptive leveling device to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a 3D printing platform adaptive leveling device, which solves the problems that the printing platform in the prior art is prone to tilt when bearing weight, and when detecting the coordinates of the current position of the printing platform through the position detector, an electronic sensor is required, and in a high-temperature and dusty environment, the sensor is easily interfered, resulting in inaccurate adjustment of the printing platform, through the cooperation of a support mechanism, a reset mechanism, and a counterweight mechanism.

[0007] To solve the above technical problems, the present invention is achieved through the following technical solutions.

[0008] The present invention relates to a 3D printing platform adaptive leveling device, including a base. A support platform is arranged on the top of the base, and a bubble level is installed on one side of the support platform; a support mechanism is arranged on the top of the base, and the support mechanism includes a bottom plate installed on the top of the base, a spherical shell installed on the top of the bottom plate, a movable ball movably connected inside the spherical shell, and a support column installed on the top of the movable ball. The stability of the support platform is maintained through the support mechanism; a reset mechanism is arranged at the bottom of the support platform, and the reset mechanism includes a telescopic tube arranged at the bottom of the support platform, a piston rod slidably connected inside the telescopic tube, a moving shell installed on one side of the piston rod, a movable groove opened inside the moving shell, a moving shaft slidably connected inside the movable groove, a first connecting rod and a second connecting rod movably connected to the surface of the moving shaft, and an elastic piece installed on one side of the first connecting rod. The balance of the support platform is adjusted through the reset mechanism; a counterweight mechanism is arranged on the top of the support platform, and the counterweight mechanism includes a fixed tube installed inside the base, a counterweight block slidably connected inside the fixed tube, and a traction rope installed on the top of the counterweight block. The counterweight block helps the support platform maintain a horizontal state; an adjustment mechanism is arranged on one side of the bottom plate, and the adjustment mechanism includes a fixed sleeve installed inside the bottom plate and a screw rod threadedly connected inside the fixed sleeve. The angle of the support platform is fixed through the adjustment mechanism.

[0009] The present invention is further provided that the reset mechanism further includes a spring sleeved on the surface of the piston rod, a piston piece installed at one end of the piston rod, an air delivery pipe communicated with the bottom of the telescopic tube, an adjustment shell communicated with the other end of the air delivery pipe, and a compressed gas tank communicated with the other side of the adjustment shell. The piston piece is slidably connected with the inner wall of the telescopic tube.

[0010] The present invention is further provided that a linkage mechanism is arranged inside the bottom plate, and the linkage mechanism includes a slider installed at the bottom of the moving shell, a toothed plate installed on one side of the slider, a gear meshed with one side of the toothed plate, a rotating block movably connected inside the adjustment shell, a through groove opened inside the rotating block, and a rotating shaft installed on the top of the gear.

[0011] The present invention is further provided that the top of the rotating shaft is fixedly connected with the gear, the bottom of the slider is slidably connected with the bottom plate, and one side of the telescopic tube is fixedly connected with the spherical shell.

[0012] The present invention is further provided that the other end of the second connecting rod is movably connected with a mounting seat through a pin shaft, the bottom of the mounting seat is fixedly connected with the bottom plate, the other end of the elastic piece is fixedly connected with the mounting seat, and the other end of the first connecting rod is fixedly connected with a spherical block.

[0013] The present invention is further configured such that the adjustment mechanism further includes an adjustment rod installed at the bottom of the support platform, a disc installed at the top of the screw rod, and a knob installed at the bottom of the screw rod.

[0014] The present invention is further configured such that a damper is provided at the top of the bottom plate, and the top and bottom of the damper are respectively movably connected to the bottom plate and the support platform through universal ball joint connectors.

[0015] The present invention is further configured such that the counterweight mechanism further includes a support frame and a guide ring sleeved on the surface of the traction rope. The bottom of the support frame is fixedly connected to the fixed pipe, and the bottom of the guide ring is fixedly connected to the bottom plate.

[0016] The present invention is further configured such that the other end of the traction rope is fixedly connected to a vertical rod, and the top of the vertical rod is fixedly connected to the support platform.

[0017] The present invention is further configured such that a connecting shaft is installed inside the support frame, and an auxiliary wheel is fixedly connected to the surface of the connecting shaft.

[0018] The present invention has the following beneficial effects: Through the setting of the spherical shell and the movable ball, the present invention enables the support column to flexibly adjust the inclination angle, avoiding the inclination of the platform due to uneven weight distribution, and significantly improving the stability of the 3D printing platform. Through the linkage design of the elastic sheet, the piston rod and the compressed gas tank, a reverse acting force is quickly provided when the platform inclines, realizing automatic reset and eliminating the secondary offset caused by vibration. By using the cooperation of the four groups of counterweight blocks and the traction rope, the forces on the four corners of the platform are dynamically balanced, ensuring that a high-precision horizontal state can still be maintained under complex working conditions, and solving the problem that the traditional leveling device is easily interfered by external forces. The present invention can complete the leveling operation without relying on electronic sensors, has strong environmental adaptability. The adjustment mechanism adopts the mechanical transmission structure of the screw rod, combined with the intuitive feedback of the bubble level, and can accurately control the platform angle in harsh environments such as high temperature and dust. The combined design of the damper and the universal ball joint connector not only suppresses the vibration impact during the movement of the platform, but also endows the ability to flexibly adjust at multiple angles, avoiding stress concentration caused by rigid connection. The linkage mechanism realizes efficient reset by converting the platform inclination into a gas injection action through the mechanical transmission chain of the toothed plate, the gear and the rotating block, and solves the technical pain points of easy failure of sensors and insufficient adjustment accuracy in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below.

[0020] Figure 1 It is a perspective view of a 3D printing platform adaptive leveling device.

[0021] Figure 2Schematic diagram of the separation of the bottom plate and the support platform in a self - adaptive leveling device for a 3D printing platform.

[0022] Figure 3 It is a self - adaptive leveling device for a 3D printing platform Figure 2 Bottom view.

[0023] Figure 4 Partial cross - sectional view of the bottom plate in a self - adaptive leveling device for a 3D printing platform.

[0024] Figure 5 Cross - sectional view of the spherical shell in a self - adaptive leveling device for a 3D printing platform.

[0025] Figure 6 Cross - sectional view of the moving shell in a self - adaptive leveling device for a 3D printing platform.

[0026] Figure 7 Cross - sectional view of the adjusting shell in a self - adaptive leveling device for a 3D printing platform.

[0027] Figure 8 Cross - sectional view of the telescopic tube in a self - adaptive leveling device for a 3D printing platform.

[0028] Figure 9 Cross - sectional view of the bottom plate and the fixed tube in a self - adaptive leveling device for a 3D printing platform.

[0029] In the drawings: 1, base; 2, support platform; 3, bubble level; 4, bottom plate; 5, spherical shell; 6, movable ball; 7, support pillar; 8, telescopic tube; 9, piston rod; 10, moving shell; 11, movable groove; 12, moving shaft; 13, first connecting rod; 14, second connecting rod; 15, elastic sheet; 16, fixed tube; 17, counterweight; 18, towing rope; 19, fixed sleeve; 20, screw; 21, spring; 22, piston sheet; 23, air delivery pipe; 24, adjusting shell; 25, compressed gas tank; 26, slider; 27, toothed plate; 28, gear; 29, rotating block; 30, through - slot; 31, rotating shaft; 32, mounting seat; 33, spherical block; 34, adjusting rod; 35, disc; 36, knob; 37, damper; 38, support frame; 39, guide ring; 40, vertical rod; 41, connecting shaft; 42, auxiliary wheel. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be described with reference to the drawings in the embodiments of the present invention. The described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0031] Embodiment 1 Please refer to Figures 1-9, the present invention is a 3D printing platform adaptive leveling device, including a base 1. A support platform 2 is arranged on the top of the base 1, and a bubble level 3 is installed on one side of the support platform 2; a support mechanism is arranged on the top of the base 1, and the support mechanism includes a bottom plate 4 installed on the top of the base 1, a spherical shell 5 installed on the top of the bottom plate 4, a movable ball 6 movably connected inside the spherical shell 5, and a support column 7 installed on the top of the movable ball 6. The stability of the support platform 2 is maintained through the support mechanism; a reset mechanism is arranged at the bottom of the support platform 2, and the reset mechanism includes a telescopic tube 8 arranged at the bottom of the support platform 2, a piston rod 9 slidably connected inside the telescopic tube 8, a moving shell 10 installed on one side of the piston rod 9, a movable groove 11 opened inside the moving shell 10, a moving shaft 12 slidably connected inside the movable groove 11, a first connecting rod 13 and a second connecting rod 14 movably connected to the surface of the moving shaft 12, and an elastic sheet 15 installed on one side of the first connecting rod 13. The balance of the support platform 2 is adjusted through the reset mechanism; a weight mechanism is arranged on the top of the support platform 2, and the weight mechanism includes a fixed tube 16 installed inside the base 1, a weight block 17 slidably connected inside the fixed tube 16, and a traction rope 18 installed on the top of the weight block 17. The weight block 17 helps the support platform 2 to maintain a horizontal state; an adjusting mechanism is arranged on one side of the bottom plate 4, and the adjusting mechanism includes a fixed sleeve 19 installed inside the bottom plate 4 and a screw rod 20 threadedly connected inside the fixed sleeve 19. The angle of the support platform 2 is fixed through the adjusting mechanism.

[0032] Specifically: The support platform 2 is used to be installed at the bottom of the 3D printer to help position the printing components and support the printing components at the same time, improving the stability during printing. There are four groups of bubble levels 3, which are respectively installed on the four sides of the support platform 2, facilitating the staff to observe the horizontal angle of the support platform 2 and providing a reference for adjustment. The movable ball 6 is movably connected inside the spherical shell 5, enabling the support column 7 to rotate around the movable ball 6 as the axis, improving the stability of the inclination of the support platform 2. The first connecting rod 13 and the second connecting rod 14 are movably connected through the moving shaft 12. The elastic sheet 15 has the function of elastic reset and can elastically support the support platform 2. There are four groups of reset components, evenly distributed at the bottom of the support platform 2, which can help the support platform 2 maintain a horizontal state. The moving shaft 12 is slidably connected inside the movable groove 11. When the first connecting rod 13 tilts downward, it can push the moving shell 10 to move, converting the tilting force into a lateral force to buffer the tilt of the support platform 2. The traction rope 18 is connected between the weight block 17 and the vertical rod 40. When the support platform 2 tilts downward and upward on one side, the traction rope 18 can be pulled. There are four groups of weight blocks 17, and the four groups of weight blocks 17 respectively weigh the four corners of the support platform 2, which can help the support platform 2 maintain a horizontal state.

[0033] Embodiment 2 Please refer to Figures 1-9 , on the basis of Embodiment 1, the reset mechanism further includes a spring 21 sleeved on the surface of the piston rod 9, a piston piece 22 installed at one end of the piston rod 9, an air delivery pipe 23 communicated with the bottom of the telescopic pipe 8, an adjustment shell 24 communicated with the other end of the air delivery pipe 23, a compressed gas tank 25 communicated with the other side of the adjustment shell 24. The piston piece 22 is slidably connected to the inner wall of the telescopic pipe 8. A linkage mechanism is arranged inside the bottom plate 4. The linkage mechanism includes a slider 26 installed at the bottom of the moving shell 10, a toothed plate 27 installed on one side of the slider 26, a gear 28 meshed with one side of the toothed plate 27, a rotating block 29 movably connected inside the adjustment shell 24, a through groove 30 opened inside the rotating block 29, a rotating shaft 31 installed on the top of the gear 28. The top of the rotating shaft 31 is fixedly connected to the gear 28. The bottom of the slider 26 is slidably connected to the bottom plate 4. One side of the telescopic pipe 8 is fixedly connected to the spherical shell 5. The other end of the second connecting rod 14 is movably connected with a mounting seat 32 through a pin shaft. The bottom of the mounting seat 32 is fixedly connected to the bottom plate 4. The other end of the elastic piece 15 is fixedly connected to the mounting seat 32. The other end of the first connecting rod 13 is fixedly connected to a spherical block 33.

[0034] Specifically: The surface of the screw rod 20 is threadedly connected to the fixed sleeve 19 through threads. When the screw rod 20 is rotated, the height of the disc 35 can be adjusted. The number of the screw rods 20 and the fixed sleeves 19 are both set to four groups. The four groups of fixed sleeves 19 are installed at the four corners of the bottom plate 4 and correspond to the four groups of adjusting rods 34. The spring 21 has the function of compressing and storing energy, and can elastically support the adjustment shell 24, providing elastic potential energy for the reset of the support platform 2. The piston piece 22 is slidably connected to the inner wall of the telescopic pipe 8. The compressed gas tank 25 stores compressed gas, and the compressed gas can be injected into the telescopic pipe 8 to push the piston piece 22 to reset. The slider 26 is slidably connected to the top of the bottom plate 4. The surface of the rotating shaft 31 is movably connected to the inner wall of the bottom plate 4 through a bearing. The rotating block 29 is cylindrical, and the rotating block 29 is movably connected to the inside of the adjustment shell 24. When the toothed plate 27 moves, it can cooperate with the gear 28 to push the rotating block 29 to rotate. When the through groove 30 inside the rotating block 29 rotates, the air delivery pipe 23 and the compressed gas tank 25 can be communicated, so that the compressed gas can be injected into the telescopic pipe 8.

[0035] Embodiment 3 Please refer to Figures 1-9, based on Embodiment 1 and Embodiment 2, the adjusting mechanism further includes an adjusting rod 34 installed at the bottom of the support platform 2, a disc 35 installed at the top of the screw rod 20, a knob 36 installed at the bottom of the screw rod 20, a damper 37 is arranged on the top of the bottom plate 4, and the top and bottom of the damper 37 are movably connected to the bottom plate 4 and the support platform 2 respectively through universal ball joint connectors. The counterweight mechanism further includes a support frame 38 and a guide ring 39 sleeved on the surface of the traction rope 18. The bottom of the support frame 38 is fixedly connected to the fixed pipe 16, the bottom of the guide ring 39 is fixedly connected to the bottom plate 4, the other end of the traction rope 18 is fixedly connected to a vertical rod 40, and the top of the vertical rod 40 is fixedly connected to the support platform 2. A connecting shaft 41 is installed inside the support frame 38, and an auxiliary wheel 42 is fixedly connected to the surface of the connecting shaft 41.

[0036] Specifically: The top of the spherical block 33 is in contact with the support platform 2. When the support platform 2 is tilted, it can ensure that the spherical block 33 is always in contact with the support platform 2. The diameter of the adjusting disc is larger than that of the adjusting rod 34. When the adjusting rod 34 follows the tilt of the support platform 2, the disc 35 can move upward to contact the adjusting rod 34 and play a supporting role. The damper 37 is movably connected to the bottom plate 4 and the support platform 2 through universal ball joint connectors. The universal ball joint connectors can provide the function of inclined connection. The damper 37 and the universal ball joint connectors play important roles. The damper 37 can effectively buffer and dissipate energy, suppress excessive vibration and impact during the movement of the platform, and improve stability and safety. The universal ball joint connectors endow the system with multi-directional movement ability, enabling the support platform 2 to flexibly adapt to different attitude changes and achieve multi-angle adjustment and movement. The two work together to not only ensure the stability of the connection between the bottom plate 4 and the support platform 2, but also ensure the flexibility and controllability of the platform movement. The guide ring 39 is sleeved on the surface of the traction rope 18, which can improve the smoothness when the traction rope 18 is pulled. The inside of the guide ring 39 is designed as an arc, providing a sliding function when the traction rope 18 is pulled to avoid friction of the traction rope 18. The auxiliary wheel 42 is installed inside the support frame 38, which can assist in pulling the traction rope 18 and help the traction rope 18 pull the counterweight block 17 smoothly.

[0037] The working principle of the present invention is as follows: When a printing component is placed on the top of the support platform 2 and subsequent processing is carried out on the printing component, due to the unbalanced weight of the printed sample, the support platform 2 will be driven to tilt. At this time, the support platform 2 will drive the support pillar 7 to tilt with the movable ball 6 as the axis. When the support platform 2 tilts, it will push the spherical block 33 and the first connecting rod 13 to move. When the first connecting rod 13 tilts, it will squeeze the elastic piece 15, and the elastic piece 15 provides elastic potential energy for the reset of the support platform 2. When the first connecting rod 13 tilts, it cooperates with the second connecting rod 14 to push the moving shaft 12 to move. The moving shaft 12 pushes the moving shell 10 to move and pushes the spring 21 and the piston rod 9. The spring 21 provides elastic potential energy for the reset of the support platform 2 to help the support platform 2 maintain a balanced state.

[0038] While the moving housing 10 moves, it drives the slider 26 and the toothed plate 27 to move. The toothed plate 27 cooperates with the gear 28 to drive the rotating shaft 31 and the rotating block 29 to rotate. When the through groove 30 inside the rotating block 29 rotates, the air delivery pipe 23 and the compressed gas tank 25 can be connected, enabling the compressed gas to be injected into the telescopic pipe 8. The gas injected into the telescopic pipe 8 can push the piston piece 22 and the piston rod 9 to reset. The piston rod 9 cooperates with the moving housing 10 to push the moving shaft 12 and the first connecting rod 13 to reset, so that the support platform 2 can offset the tilting force.

[0039] While the support platform 2 tilts, it can drive the vertical rod 40 to move. When the vertical rod 40 moves, it pulls the towing rope 18. The towing rope 18 drives the counterweight 17 to move. There are four groups of counterweights 17, which are distributed at the four corners of the bottom of the support platform 2, and can provide stable pulling force to the four corners of the support platform 2 to achieve the leveling of the support platform 2.

[0040] After that, the staff observes the inclination of the support platform 2 through the bubble level 3, and then manually rotates the four groups of knobs 36. The knobs 36 cooperate with the screw rod 20 to drive the disc 35 to move upward. When the disc 35 contacts the vertical rod 40, the support angle of the support platform 2 can be fixed to help the support platform 2 maintain a balanced state. The entire leveling work does not require the use of external electronic sensors and can be used in high-temperature and dusty environments.

[0041] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different 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 protection scope of the claims of the present invention.

Claims

1. An adaptive leveling device for a 3D printing platform, comprising a base (1), characterized in that: A support platform (2) is provided on the top of the base (1), and a bubble level (3) is installed on one side of the support platform (2); A support mechanism is provided on the top of the base (1). The support mechanism includes a bottom plate (4) installed on the top of the base (1), a spherical shell (5) installed on the top of the bottom plate (4), a movable ball (6) movably connected inside the spherical shell (5), and a support column (7) installed on the top of the movable ball (6); A reset mechanism is provided at the bottom of the support platform (2). The reset mechanism includes a telescopic tube (8) provided at the bottom of the support platform (2), a piston rod (9) slidably connected inside the telescopic tube (8), a moving shell (10) installed on one side of the piston rod (9), a movable slot (11) opened inside the moving shell (10), a moving shaft (12) slidably connected inside the movable slot (11), a first connecting rod (13) and a second connecting rod (14) movably connected to the surface of the moving shaft (12), and an elastic sheet (15) installed on one side of the first connecting rod (13); A weight mechanism is provided on the top of the support platform (2). The weight mechanism includes a fixed tube (16) installed inside the base (1), a weight block (17) slidably connected inside the fixed tube (16), and a traction rope (18) installed on the top of the weight block (17); An adjusting mechanism is provided on one side of the bottom plate (4). The adjusting mechanism includes a fixed sleeve (19) installed inside the bottom plate (4), and a screw rod (20) threadedly connected inside the fixed sleeve (19).

2. The self - adaptive leveling device for a 3D printing platform according to claim 1, characterized in that: The reset mechanism further includes a spring (21) sleeved on the surface of the piston rod (9), a piston piece (22) installed at one end of the piston rod (9), an air delivery pipe (23) communicated with the bottom of the telescopic tube (8), an adjusting shell (24) communicated with the other end of the air delivery pipe (23), and a compressed gas tank (25) communicated with the other side of the adjusting shell (24). The piston piece (22) is slidably connected to the inner wall of the telescopic tube (8).

3. The self - adaptive leveling device for a 3D printing platform according to claim 1, characterized in that: A linkage mechanism is provided inside the bottom plate (4). The linkage mechanism includes a slider (26) installed at the bottom of the moving shell (10), a toothed plate (27) installed on one side of the slider (26), a gear (28) meshed with one side of the toothed plate (27), a rotating block (29) movably connected inside the adjusting shell (24), a through slot (30) opened inside the rotating block (29), and a rotating shaft (31) installed on the top of the gear (28).

4. The self - adaptive leveling device for a 3D printing platform according to claim 3, wherein: The top of the rotating shaft (31) is fixedly connected to the gear (28), the bottom of the slider (26) is slidably connected to the bottom plate (4), and one side of the telescopic tube (8) is fixedly connected to the spherical shell (5).

5. The self - adaptive leveling device for a 3D printing platform according to claim 2, wherein: The other end of the second connecting rod (14) is movably connected to a mounting seat (32) through a pin shaft. The bottom of the mounting seat (32) is fixedly connected to the bottom plate (4). The other end of the elastic sheet (15) is fixedly connected to the mounting seat (32). The other end of the first connecting rod (13) is fixedly connected to a spherical block (33).

6. The self - adaptive leveling device for a 3D printing platform according to claim 1, wherein: The adjusting mechanism further includes an adjusting rod (34) installed at the bottom of the support platform (2), a disc (35) installed on the top of the screw rod (20), and a knob (36) installed on the bottom of the screw rod (20).

7. The self - adaptive leveling device for a 3D printing platform according to claim 1, wherein: A damper (37) is provided on the top of the bottom plate (4), and the top and bottom of the damper (37) are movably connected to the bottom plate (4) and the support platform (2) respectively through universal ball joint connectors.

8. A 3D printing platform adaptive leveling device according to claim 1, characterized in that: The weight mechanism further includes a support frame (38) and a guide ring (39) sleeved on the surface of the traction rope (18). The bottom of the support frame (38) is fixedly connected to the fixed pipe (16), and the bottom of the guide ring (39) is fixedly connected to the bottom plate (4).

9. The self - adaptive leveling device for a 3D printing platform according to claim 1, characterized in that: The other end of the traction rope (18) is fixedly connected to a vertical rod (40), and the top of the vertical rod (40) is fixedly connected to the support platform (2).

10. The self - adaptive leveling device for a 3D printing platform according to claim 8, wherein: A connecting shaft (41) is installed inside the support frame (38), and an auxiliary wheel (42) is fixedly connected to the surface of the connecting shaft (41).

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