3D printing platform adaptive leveling device

Abstract

The application discloses a 3D printing platform self-adaptive leveling device and relates to the technical field of printing equipment.The application comprises a base, the top of the base is provided with a supporting platform, the supporting platform is provided with a bubble level on one side, the top of the base is provided with a supporting mechanism, and the supporting mechanism comprises a bottom plate which is installed on the top of the base.The application can flexibly adjust the inclination angle of the supporting column through the setting of the spherical shell and the movable ball, can avoid the inclination of the platform due to uneven weight distribution, can significantly improve the stability of the 3D printing platform, can quickly provide a reverse force when the platform is inclined through the linkage design of the elastic sheet, the piston rod and the compressed gas tank, can realize automatic resetting, can eliminate secondary deviation caused by vibration, can dynamically balance the stress on the four corners of the platform through the cooperation of the four groups of counterweights and the traction ropes, can ensure that the high-precision horizontal state can be maintained under complex working conditions, and can solve the problem that the traditional leveling device is easily disturbed by external force.

Description

Technical Field

[0001] This invention belongs to the field of printing equipment technology, and in particular relates to an adaptive leveling device for a 3D printing platform. Background Technology

[0002] A 3D printing support platform is an indispensable component in the 3D printing process. Its primary function is to provide stable support for the model during printing. When printing models with suspended structures or complex geometries, the support platform prevents deformation or collapse due to gravity. Support platforms typically possess good flatness and stability, ensuring precise positioning of the model during printing. Their material is generally compatible with the printing material or has suitable physical properties, facilitating easy removal after printing without causing excessive damage to the model. The design and performance of the support platform directly affect the quality and success rate of 3D printing, making it a key factor in ensuring smooth printing.

[0003] A Chinese patent application (or patent) with publication number CN206983291U discloses an automatic leveling structure for a 3D printing platform and a printer, comprising: a printing platform, wherein at least three sensing contacts are provided on the printing surface of the printing platform, the sensing contacts being interconnected and not on the same straight line; and a print head, wherein 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. This invention solves the problem that manual or semi-automatic leveling of current 3D printing platforms is not only time-consuming but also has high labor costs.

[0004] However, the above-mentioned device still has the following problems in the implementation process: 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. Moreover, the spring is elastic. When the weight of the printed sample on the top of the platform is unbalanced, the entire platform will also tilt. At this time, after adjusting by turning the adjustment knob to tighten the spring, the printing platform will also shake when affected by vibration. In addition, when detecting the coordinates of the current position of the printing platform by the position detector, an electronic sensor is required. In a high-temperature and dusty environment, the sensor is easily interfered with, making the adjustment of the printing platform not accurate enough.

[0005] To address these issues, we provide an adaptive leveling device for a 3D printing platform. Summary of the Invention

[0006] The purpose of this invention is to provide an adaptive leveling device for a 3D printing platform. By cooperating with a support mechanism, a reset mechanism and a counterweight mechanism, it solves the problems in the prior art where the printing platform is prone to tilting when bearing weight, and where electronic sensors are required to detect the coordinates of the current position of the printing platform by a position detector. In high-temperature and dusty environments, the sensors are easily interfered with, resulting in inaccurate adjustment of the printing platform.

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

[0008] This invention relates to an adaptive leveling device for a 3D printing platform, comprising a base, a support platform on top of the base, and a bubble level mounted on one side of the support platform; a support mechanism on top of the base, comprising a base plate mounted on top of the base, a spherical shell mounted on top of the base plate, a movable ball movably connected inside the spherical shell, and a support column mounted on top of the movable ball, thereby maintaining the stability of the support platform; and a reset mechanism at the bottom of the support platform, comprising a telescopic tube at the bottom of the support platform, a piston rod slidably connected inside the telescopic tube, a movable shell mounted on one side of the piston rod, and a movable groove formed inside the movable shell. A movable shaft is slidably connected inside the movable groove, and a first connecting rod and a second connecting rod are movably connected to the surface of the movable shaft. An elastic plate is installed on one side of the first connecting rod. The balance of the support platform is adjusted by a reset mechanism. A counterweight mechanism is provided on the top of the support platform. 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 to maintain the support platform in a horizontal state. An adjustment mechanism is provided on one side of the base plate. The adjustment mechanism includes a fixed sleeve installed inside the base plate and a screw threadedly connected inside the fixed sleeve. The angle of the support platform is fixed by the adjustment mechanism.

[0009] The invention is further configured such that the reset mechanism includes a spring sleeved on the surface of the piston rod, a piston plate installed at one end of the piston rod, a gas supply pipe connected to the bottom of the telescopic tube, an adjusting shell connected to the other end of the gas supply pipe, and a compressed gas tank connected to the other side of the adjusting shell, wherein the piston plate is slidably connected to the inner wall of the telescopic tube.

[0010] The present invention is further configured such that a linkage mechanism is provided inside the base plate, the linkage mechanism including a slider installed at the bottom of the movable shell, a toothed plate installed on one side of the slider, a gear meshing on one side of the toothed plate, a rotating block movably connected inside the adjusting shell, a through groove opened inside the rotating block, and a rotating shaft installed on the top of the gear.

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

[0012] The present invention is further configured such that the other end of the second connecting rod is movably connected to a mounting base via a pin, the bottom of the mounting base is fixedly connected to the base plate, the other end of the elastic sheet is fixedly connected to the mounting base, and the other end of the first connecting rod is fixedly connected to a spherical block.

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

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

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

[0016] The invention is further configured such that a vertical rod is fixedly connected to the other end of the traction rope, 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] This invention offers the following advantages: By using a spherical shell and a movable ball, the support column can flexibly adjust its tilt angle, preventing the platform from tilting due to uneven weight distribution and significantly improving the stability of the 3D printing platform. Through the coordinated design of the elastic plate, piston rod, and compressed gas tank, a reverse force is quickly provided when the platform tilts, achieving automatic reset and eliminating secondary offset caused by vibration. The cooperation of four sets of counterweights and traction ropes dynamically balances the forces at the four corners of the platform, ensuring a high-precision level even under complex working conditions, thus solving the problem of traditional leveling devices being easily affected by external forces. This invention does not rely on… The electronic sensor can complete the leveling operation, which has strong environmental adaptability. The adjustment mechanism adopts a screw mechanical transmission structure, combined with the intuitive feedback of the bubble level, which can accurately control the platform angle in harsh environments such as high temperature and dust. The combination design of the damper and universal ball joint not only suppresses the vibration and impact during platform movement, but also provides flexible multi-angle adjustment capability, avoiding stress concentration caused by rigid connection. The linkage mechanism converts the platform tilting into a gas injection action through the mechanical transmission chain of toothed plate, gear and rotating block, realizing efficient reset, and solving the technical pain points of easy sensor failure and insufficient adjustment accuracy in the existing technology. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a three-dimensional view of an adaptive leveling device for a 3D printing platform.

[0021] Figure 2This is a schematic diagram showing the separation of the base plate and the support platform in an adaptive leveling device for a 3D printing platform.

[0022] Figure 3 An adaptive leveling device for a 3D printing platform Figure 2 A bottom view.

[0023] Figure 4 This is a partial cross-sectional view of the base plate in an adaptive leveling device for a 3D printing platform.

[0024] Figure 5 This is a cross-sectional view of a spherical shell in an adaptive leveling device for a 3D printing platform.

[0025] Figure 6 This is a cross-sectional view of a moving shell in an adaptive leveling device for a 3D printing platform.

[0026] Figure 7 This is a cross-sectional view of the adjusting shell in an adaptive leveling device for a 3D printing platform.

[0027] Figure 8 This is a cross-sectional view of a telescopic tube in an adaptive leveling device for a 3D printing platform.

[0028] Figure 9 This is a cross-sectional view of the base plate and fixing tube in an adaptive leveling device for a 3D printing platform.

[0029] In the attached diagram: 1. Base; 2. Support platform; 3. Bubble level; 4. Base plate; 5. Spherical shell; 6. Movable ball; 7. Support column; 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. Traction rope; 19. Fixed sleeve; 20. Screw; 21. Spring 21. Spring; 22. Piston plate; 23. Gas pipe; 24. Adjusting shell; 25. Compressed gas tank; 26. Slider; 27. Tooth plate; 28. Gear; 29. ​​Rotating block; 30. Through groove; 31. Rotating shaft; 32. Mounting base; 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

[0030] The technical solutions of the present invention will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Example 1

[0032] Please see Figures 1-9This invention relates to an adaptive leveling device for a 3D printing platform, comprising a base 1, a support platform 2 on top of the base 1, and a bubble level 3 mounted on one side of the support platform 2; a support mechanism is provided on top of the base 1, the support mechanism including a base plate 4 mounted on top of the base 1, a spherical shell 5 mounted on top of the base plate 4, a movable ball 6 movably connected inside the spherical shell 5, and a support column 7 mounted on top of the movable ball 6, the support mechanism maintaining the stability of the support platform 2; a reset mechanism is provided at the bottom of the support platform 2, the reset mechanism including a telescopic tube 8 located at the bottom of the support platform 2, a piston rod 9 slidably connected inside the telescopic tube 8, a movable shell 10 mounted on one side of the piston rod 9, and a movable groove 11 opened inside the movable shell 10, slidably connected to the movable ball 6. The movable shaft 12 inside the movable groove 11, the first connecting rod 13 and the second connecting rod 14 movably connected to the surface of the movable shaft 12, and the elastic plate 15 installed on one side of the first connecting rod 13, adjust the balance of the support platform 2 through the reset mechanism; the top of the support platform 2 is provided with a counterweight mechanism, which includes a fixed tube 16 installed inside the base 1, a counterweight block 17 slidably connected inside the fixed tube 16, and a traction rope 18 installed on the top of the counterweight block 17, which helps the support platform 2 to maintain a horizontal state through the counterweight block 17; an adjustment mechanism is provided on one side of the base plate 4, which includes a fixed sleeve 19 installed inside the base plate 4 and a screw 20 threadedly connected inside the fixed sleeve 19, which fixes the angle of the support platform 2 through the adjustment mechanism.

[0033] Specifically: Support platform 2 is installed at the bottom of the 3D printer to help position the printed parts and support them, improving stability during printing. Four sets of bubble levels 3 are installed on the four sides of support platform 2, allowing operators to easily observe the horizontal angle of the support platform 2 and providing a reference for adjustment. Movable ball 6 is movably connected inside spherical shell 5, allowing support column 7 to rotate around the movable ball 6, improving the stability of the support platform 2 when tilted. The first connecting rod 13 and the second connecting rod 14 are movably connected via movable shaft 12. Elastic sheet 15 has an elastic restoring function, providing elastic support for support platform 2. The support and reset components are arranged in four sets, 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 to the inside of 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, thus buffering the tilt of the support platform 2. The traction rope 18 is connected between the counterweight 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 sets of counterweight blocks 17, which respectively provide weight to the four corners of the support platform 2, which can help the support platform 2 maintain a horizontal state.

[0034] Example 2

[0035] Please see Figures 1-9 Based on Embodiment 1, the reset mechanism further includes a spring 21 sleeved on the surface of the piston rod 9, a piston plate 22 installed at one end of the piston rod 9, an air supply pipe 23 connected to the bottom of the telescopic tube 8, an adjusting shell 24 connected to the other end of the air supply pipe 23, and a compressed gas tank 25 connected to the other side of the adjusting shell 24. The piston plate 22 is slidably connected to the inner wall of the telescopic tube 8. A linkage mechanism is provided inside the base plate 4. The linkage mechanism includes a slider 26 installed at the bottom of the movable shell 10, a toothed plate 27 installed on one side of the slider 26, and teeth meshing on one side of the toothed plate 27. The gear 28 is movably connected to the rotating block 29 inside the adjusting shell 24. A through groove 30 is opened inside the rotating block 29. A rotating shaft 31 is 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 base plate 4. One side of the telescopic tube 8 is fixedly connected to the spherical shell 5. The other end of the second connecting rod 14 is movably connected to the mounting base 32 through a pin. The bottom of the mounting base 32 is fixedly connected to the base plate 4. The other end of the elastic plate 15 is fixedly connected to the mounting base 32. The other end of the first connecting rod 13 is fixedly connected to the spherical block 33.

[0036] Specifically: the screw 20 is threadedly connected to the fixed sleeve 19. Rotating the screw 20 allows adjustment of the height of the disc 35. Four sets of screws 20 and fixed sleeves 19 are provided. The four sets of fixed sleeves 19 are installed at the four corners of the base plate 4, corresponding to the four sets of adjusting rods 34. The spring 21 has a compression and energy storage function, providing elastic support to the adjusting shell 24 and providing elastic potential energy for the reset of the support platform 2. The piston plate 22 is slidably connected to the inner wall of the telescopic tube 8. The compressed gas tank 25 stores [unclear - possibly a specific gas or energy]. Compressed gas can be injected into the telescopic tube 8 to push the piston plate 22 to reset. The slider 26 is slidably connected to the top of the base plate 4. The surface of the rotating shaft 31 is movably connected to the inner wall of the base plate 4 through the bearing. The rotating block 29 is cylindrical and is movably connected to the inside of the adjusting 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, it can connect the gas supply pipe 23 and the compressed gas tank 25, so that the compressed gas can be injected into the telescopic tube 8.

[0037] Example 3

[0038] Please see Figures 1-9Based on Embodiments 1 and 2, the adjustment mechanism further includes an adjustment rod 34 installed at the bottom of the support platform 2, a disc 35 installed at the top of the screw 20, a knob 36 installed at the bottom of the screw 20, a damper 37 provided at the top of the base plate 4, and the top and bottom of the damper 37 being movably connected to the base 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 tube 16, and the bottom of the guide ring 39 is fixedly connected to the base 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.

[0039] Specifically: The top of the spherical block 33 contacts the support platform 2, ensuring that the spherical block 33 remains in contact with the support platform 2 when the platform is tilted. The diameter of the adjusting disc is larger than the diameter of the adjusting rod 34. When the adjusting rod 34 tilts with the support platform 2, the disc 35 moves upward to contact the adjusting rod 34, providing support. The damper 37 is movably connected to the base plate 4 and the support platform 2 via a universal ball joint connector. The universal ball joint connector provides tilting connection. The damper 37 and the universal ball joint connector play important roles. The damper 37 effectively buffers and dissipates energy, suppressing excessive vibration and impact during platform movement, thus improving stability and safety. The universal ball joint connector gives the system multi-directional mobility, allowing the support platform 2 to flexibly adapt to different posture changes and achieve multi-angle adjustment and movement. The two work together to ensure the stability of the connection between the base plate 4 and the support platform 2, and to 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 stability of the traction rope 18 when it is pulled. The inside of the guide ring 39 is an arc-shaped design, which provides a sliding effect when the traction rope 18 is pulled, and avoids friction of the traction rope 18. The auxiliary wheel 42 is installed inside the support frame 38, which can assist the pulling of the traction rope 18 and help the traction rope 18 pull the counterweight 17 smoothly.

[0040] The working principle of this invention is as follows: A printing component is placed on top of the support platform 2. When the printing component is processed, the unbalanced weight of the printed sample will cause the support platform 2 to tilt. At this time, the support platform 2 will cause the support column 7 to tilt around 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 sheet 15. The elastic sheet 15 provides elastic potential energy for the reset of the support platform 2. When the first connecting rod 13 tilts, it will cooperate 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, helping the support platform 2 to maintain a balanced state.

[0041] As the movable housing 10 moves, it drives the slider 26 and the toothed plate 27 to move. The toothed plate 27, in conjunction with the gear 28, drives the rotating shaft 31 and the rotating block 29 to rotate. When the through groove 30 inside the rotating block 29 rotates, it can connect the gas supply pipe 23 and the compressed gas tank 25, allowing the compressed gas to be injected into the telescopic pipe 8. The gas injected into the telescopic pipe 8 can push the piston plate 22 and the piston rod 9 to reset. The piston rod 9, in conjunction with the movable housing 10, pushes the movable shaft 12 and the first connecting rod 13 to reset, so that the support platform 2 can counteract the tilting force.

[0042] When the support platform 2 tilts, it can move the vertical rod 40. When the vertical rod 40 moves, it pulls the traction rope 18. The traction rope 18 moves the counterweight 17. There are four sets of counterweights 17, which are distributed at the four corners of the bottom of the support platform 2. They can provide stable tension to the four corners of the support platform 2 and achieve leveling of the support platform 2.

[0043] Afterwards, the staff observed the tilt of the support platform 2 by observing the bubble level 3, and then manually rotated the four sets of knobs 36. The knobs 36, together with the screw 20, drove the disc 35 to move upward. When the disc 35 contacted the vertical rod 40, the support angle of the support platform 2 could be fixed, helping the support platform 2 to 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.

[0044] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. 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 foregoing 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 3D printing platform self-adaptive leveling device, comprising a base (1), characterized in that: The base (1) top is provided with a support platform (2), one side of the support platform (2) is provided with a bubble level (3); The base (1) top is provided with a support mechanism, the support mechanism comprises 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), a support column (7) installed on the top of the movable ball (6); The support platform (2) bottom is provided with a reset mechanism, the reset mechanism comprises a telescopic pipe (8) arranged on the bottom of the support platform (2), a piston rod (9) slidably connected inside the telescopic pipe (8), a moving shell (10) installed on one side of the piston rod (9), an active slot (11) opened in the moving shell (10), a moving shaft (12) slidably connected inside the active slot (11), a first connecting rod (13) and a second connecting rod (14) movably connected on the surface of the moving shaft (12), an elastic sheet (15) installed on one side of the first connecting rod (13); The support platform (2) top is provided with a counterweight mechanism, the counterweight mechanism comprises a fixed pipe (16) installed inside the base (1), a counterweight block (17) slidably connected inside the fixed pipe (16), a traction rope (18) installed on the top of the counterweight block (17); One side of the bottom plate (4) is provided with an adjusting mechanism, the adjusting mechanism comprises a fixed sleeve (19) installed inside the bottom plate (4), a screw rod (20) threadedly connected inside the fixed sleeve (19); The reset mechanism further comprises a spring (21) sleeved on the surface of the piston rod (9), a piston sheet (22) installed on one end of the piston rod (9), a gas conveying pipe (23) communicated with the bottom of the telescopic pipe (8), an adjusting shell (24) communicated with the other end of the gas conveying pipe (23), a compressed gas tank (25) communicated with the other side of the adjusting shell (24), and the piston sheet (22) is slidably connected with the inner wall of the telescopic pipe (8); The bottom plate (4) is provided with a linkage mechanism, the linkage mechanism comprises a sliding block (26) installed on the bottom of the moving shell (10), a toothed plate (27) installed on one side of the sliding block (26), a gear (28) engaged on one side of the toothed plate (27), a rotating block (29) movably connected inside the adjusting shell (24), a through slot (30) opened in the rotating block (29), and a rotating shaft (31) installed on the top of the gear (28).

2. The 3D printing platform self-adaptive leveling device according to claim 1, wherein: The rotating shaft (31) top is fixedly connected with the gear (28), the sliding block (26) bottom is slidably connected with the bottom plate (4), and one side of the telescopic pipe (8) is fixedly connected with the spherical shell (5).

3. The 3D printing platform self-adaptive leveling device according to claim 1, wherein: The other end of the second connecting rod (14) is movably connected with a mounting seat (32) through a pin shaft, the mounting seat (32) bottom is fixedly connected with the bottom plate (4), the other end of the elastic sheet (15) is fixedly connected with the mounting seat (32), and the other end of the first connecting rod (13) is fixedly connected with a spherical block (33).

4. The 3D printing platform self-adaptive leveling device according to claim 1, wherein: The adjusting mechanism further comprises an adjusting rod (34) installed on 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).

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

6. The 3D printing platform self-adaptive leveling device according to claim 1, wherein: The counterweight mechanism further comprises 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 with the fixed pipe (16), and the bottom of the guide ring (39) is fixedly connected with the bottom plate (4).

7. The 3D printing platform self-adaptive leveling device according to claim 1, wherein: The other end of the traction rope (18) is fixedly connected with a vertical rod (40), and the top of the vertical rod (40) is fixedly connected with the support platform (2). 8.The 3D printing platform self-adaptive leveling device according to claim 6, wherein: The inside of the support frame (38) is provided with a connecting shaft (41), and the surface of the connecting shaft (41) is fixedly connected with an auxiliary wheel (42).

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