Automatic leveling structure of 3D printer

Abstract

The utility model provides an automatic leveling structure of a 3D printer, comprising a base plate, a three-axis driving component arranged on the base plate, a nozzle arranged on the three-axis driving component and a printing platform arranged on the base plate, and also comprising a control system and an adjustment component arranged between the base plate and the printing platform, a driving motor is arranged at the bottom of the base plate, and a detection component for detecting Z-axis direction coordinates is also arranged on the nozzle, the detection component transmits Z-axis height data of each point on the printing platform to the control system, and the control system drives the corresponding driving motor according to the Z-axis height data to adjust the Z-axis height of each point on the printing platform to be consistent.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to an automatic leveling structure of a 3D printer. Background Art

[0002] 3D printer, also known as three-dimensional printer, is an important device of rapid prototyping technology. Its working principle is similar to that of traditional printers. It is composed of control components, mechanical components, print heads, consumables and media. However, unlike traditional printers that can only print flat materials, 3D printers can convert three-dimensional models on computers into physical objects by printing layer by layer.

[0003] At present, a Chinese patent with announcement number CN216941834U discloses a 3D printer with an adjustable tray, including a printer main body, a Z-axis moving mechanism is arranged on the printer main body, a base plate is arranged on the Z-axis moving mechanism, a tray is arranged on the base plate, a second adjustment mechanism and a second level bubble are arranged on the tray, the second adjustment mechanism includes a second screw rod, a gull spring is sleeved under the second screw rod, a butterfly nut is arranged on the upper end of the second screw rod, and the leveling of the tray is completed by observing the second level bubble and screwing the butterfly nut.

[0004] The above patent still has shortcomings. In actual use, due to wear of mechanical parts, assembly errors or external vibrations, the printer platform may be slightly uneven. In order to adapt to some materials and printing needs, the printer platform needs to be set to a specific angle to obtain the best printing effect. Inexperienced operators cannot observe the horizontality of the printer platform with the naked eye, which may easily lead to the problem of non-adhesion between the material and the printer platform during printing, which has a certain impact on the printing stability. In addition, the manual adjustment of the butterfly nut requires relatively high operating experience. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide an automatic leveling structure of a 3D printer, which has the function of automatically completing leveling.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: an automatic leveling structure of a 3D printer, comprising a base plate, a three-axis drive component arranged on the base plate, a nozzle arranged on the three-axis drive component and a printing platform arranged on the base plate, and also comprising a control system and an adjustment component arranged between the base plate and the printing platform, the adjustment components are respectively arranged on the four corners of the printing platform, and a drive motor for driving the adjustment component to automatically adjust is also arranged at the bottom of the base plate, and a detection component for detecting the Z-axis direction coordinate is also arranged on the nozzle, the detection component and the drive motor are both electrically connected to the control system, and the detection component transmits the Z-axis height data of each point on the printing platform to the control system, and the control system drives the corresponding drive motor according to the Z-axis height data to adjust the Z-axis height of each point on the printing platform to be consistent.

[0007] Through the above technical means, the detection component performs Z-axis value detection on multiple points on the printing platform and feeds back to the control system. The control system collects the values ​​of each point on the printing platform and performs comparative analysis, and sends instructions to the drive motor to control the adjustment component to adjust the printing platform, thereby achieving the function of automatic leveling.

[0008] Preferably, the adjustment component includes an adjustment column and a spring. A through hole is provided on the printing platform for the adjustment column to pass through. A pressure head is provided on the top of the adjustment column, and the pressure head presses against the upper end surface of the printing platform. The spring is sleeved on the adjustment column, one end of the spring presses against the lower end surface of the printing platform, and the other end presses against the bottom plate. The drive motor drives the adjustment column to move up and down.

[0009] Through the above technical means, the adjustment of the four corners of the printing platform in the Z-axis direction is completed by moving the adjustment column up and down, and the spring is placed on the adjustment column so that the spring is pressed against the printing platform and pressed tightly against the bottom surface of the pressure head, thereby completing the fixation of the printing platform.

[0010] Preferably, a limit column is also provided on the base plate, a limit hole is provided in the middle of the limit column, limit protrusions are provided at both ends of the limit hole, limit grooves are provided at both ends of the adjustment column, the limit protrusions are slidably connected to the limit grooves, a screw is provided at the output end of the drive motor, a screw hole is provided at the bottom of the adjustment column, and the screw is threadedly connected to the screw hole.

[0011] Through the above technical means, through the cooperation between the limiting groove and the limiting protrusion, and through the cooperation between the screw and the screw hole, when the driving motor drives the screw to rotate, the limiting column moves along the axis of the limiting hole to complete the height adjustment.

[0012] Preferably, the detection component includes a micro switch, a mounting bracket is provided at the side end of the nozzle, and the micro switch is arranged on the mounting bracket.

[0013] Through the above technical means, the upper end surface of the printing platform is touched by the micro switch, so as to achieve high-precision recording of the Z-axis value of each point on the printing platform.

[0014] Preferably, the micro switch is detachably connected to the mounting bracket, a placement bracket for placing the micro switch is further provided at the side end of the printing platform, and a locking member for fixing the micro switch is also provided on the mounting bracket.

[0015] Through the above technical means, the micro switch is fixed by a locking piece, and a placement rack is set at the side end of the printing platform, so that the nozzle is moved to the placement rack to take out the micro switch during detection, and the micro switch is put back into the placement rack during printing, thereby preventing interference between the nozzle and the micro switch, and preventing the micro switch from affecting the printed product during printing.

[0016] Preferably, the locking member includes a linear motor installed on the side end of the mounting frame, a locking rod is provided at the output end of the linear motor, a mounting groove is provided on the mounting frame, the tail of the micro switch is adapted to the mounting groove, a locking hole is provided at the tail of the micro switch, and the locking rod slides with the locking hole to fix the micro switch.

[0017] By means of the above technical means, the micro switch and the mounting bracket are fixed by the cooperation between the mounting groove and the micro switch and the cooperation between the lock rod and the lock hole.

[0018] Preferably, the printing platform includes a base and a support plate, a plate slot is provided on the base, the support plate is detachably arranged in the plate slot, a support hole is also laterally provided on the upper side end of the base, a support column is arranged in the support hole, and the support hole is threadedly connected to the support column.

[0019] Through the above technical means, the support plate and the base are detachable, thereby facilitating the replacement and maintenance of the support plate. At the same time, an appropriate support plate can be selected according to different printing materials to increase the applicability of the equipment. The support plate is tightened by the support column to prevent sliding and offset during printing.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The detection component detects the Z-axis values ​​of multiple points on the printing platform to achieve the function of automatic leveling. By setting a placement rack at the side of the printing platform, the nozzle is moved to the placement rack to take out the micro switch during detection, and the micro switch is put back into the placement rack during printing to prevent the micro switch from affecting the printed product during printing;

[0022] 2. By putting the spring on the adjusting column, the spring is pressed against the printing platform and pressed tightly against the bottom surface of the pressure head, so that the printing platform is fixed. Through the cooperation between the limit groove and the limit protrusion, and through the cooperation between the screw and the screw hole, when the driving motor drives the screw to rotate, the limit column moves along the axis of the limit hole to complete the height adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of an embodiment;

[0024] Figure 2 It is a schematic diagram of the structure of the regulating component;

[0025] Figure 3 It is a schematic diagram of the structure of the detection component;

[0026] Figure 4 This is a structural diagram of the printing platform.

[0027] Figure numerals: 1. base plate; 2. three-axis drive assembly; 3. nozzle; 4. printing platform; 5. adjustment assembly; 6. detection assembly; 7. drive motor; 8. adjustment column; 9. spring; 10. through hole; 11. pressure head; 12. limit column; 13. limit hole; 14. limit bump; 15. limit groove; 16. screw; 17. screw hole; 18. micro switch; 19. mounting bracket; 20. placement bracket; 21. linear motor; 22. locking rod; 23. mounting groove; 24. socket; 25. interface; 26. locking hole; 27. substrate; 28. support plate; 29. ​​plate groove; 30. support hole; 31. support column. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0029] An automatic leveling structure of a 3D printer includes a base plate 1, a three-axis driving component 2 arranged on the base plate 1, a nozzle 3 arranged on the three-axis driving component 2, and a printing platform 4 arranged on the base plate 1. The printing platform 4 is square, and also includes a control system and an adjustment component 5 arranged between the base plate 1 and the printing platform 4. The adjustment component 5 is arranged at the four corners of the printing platform 4. The control system is composed of a main board and corresponding software. The main board is integrated with a processor, a storage and various interfaces 25. The main board is a prior art and will not be described in detail here. The adjustment components 5 are respectively arranged at the four corners of the printing platform 4. The bottom of the base plate 1 is also provided with a drive adjustment component 5 to automatically adjust the printing platform 4. A drive motor 7 for dynamic adjustment is provided, and a detection component 6 for detecting the Z-axis coordinate is also provided on the nozzle 3. The detection component 6 and the drive motor 7 are electrically connected to the control system. The detection component 6 transmits the Z-axis height data of each point on the printing platform 4 to the control system. The points detected by the detection component 6 are the four corners, four sides and center of the printing platform 4. The control system compares the Z-axis height data and determines the highest point as the standard data. At the same time, it drives the corresponding drive motor 7 to adjust the Z-axis height of each point of the printing platform 4 to the standard data value, and then re-drives the detection component 6 for repeated detection to ensure the leveling accuracy of the printing platform 4 and achieve the function of automatic leveling.

[0030] The adjustment component 5 includes an adjustment column 8 and a spring 9. A through hole 10 is provided on the printing platform 4 for the adjustment column 8 to pass through. A pressure head 11 is provided on the top of the adjustment column 8. The diameter of the through hole 10 is larger than the diameter of the adjustment column 8 and smaller than the diameter of the pressure head 11. The bottom surface of the pressure head 11 abuts against the upper end surface of the printing platform 4. The spring 9 is sleeved on the adjustment column 8. One end of the spring 9 abuts against the lower end surface of the printing platform 4, and the other end abuts against the bottom plate 1. A limiting column 12 is provided on the bottom plate 1. A limiting hole 13 is provided in the middle of the limiting column 12. The adjustment column 8 passes through the limiting hole 13. Limiting protrusions 14 are arranged at both ends of the limiting hole 13, and limiting grooves 15 are provided at both ends of the adjusting column 8. The limiting protrusions 14 are slidably connected with the limiting grooves 15. A screw 16 is provided at the output end of the driving motor 7, and a screw hole 17 is provided at the bottom of the adjusting column 8. The screw 16 penetrates into the limiting hole 13 and is threadedly connected with the screw hole 17. The limiting protrusions 14 and the limiting grooves 15 cooperate to prevent the adjusting column 8 from rotating, and at the same time increase the sliding accuracy of the adjusting column 8. When the driving motor 7 drives the screw 16 to rotate, the adjusting column 8 moves up and down, thereby completing the height adjustment.

[0031] The detection component 6 includes a micro switch 18, and a mounting bracket 19 is provided at the side end of the nozzle 3. The micro switch 18 is arranged in the mounting bracket 19. The micro switch 18 is cylindrical, and its trigger point faces the printing platform 4 below. The micro switch 18 is detachably connected to the mounting bracket 19. A placement bracket 20 for placing the micro switch 18 is also provided at the side end of the printing platform 4. A locking part for fixing the micro switch 18 is also provided on the mounting bracket 19. When the equipment is performing printing processing, the three-axis drive component 2 drives the mounting bracket 19 to move to the placement bracket 20 and places the micro switch 18 in the placement bracket 20, thereby preventing the micro switch 18 from interfering with the nozzle 3 and preventing the micro switch 18 from touching the product during printing to cause the product to collapse.

[0032] The locking member includes a linear motor 21 installed at the side end of a mounting frame 19, a locking rod 22 is provided at the output end of the linear motor 21, a mounting slot 23 is provided on the mounting frame 19, the tail of the micro switch 18 is adapted to the mounting slot 23, a socket 24 and an interface 25 are respectively provided at the tail of the micro switch 18 and in the mounting slot 23, the micro switch 18 is energized by the cooperation of the buckle and the interface 25, a locking hole 26 is also provided at the tail of the micro switch 18, the locking rod 22 and the locking hole 26 are slidably cooperated and fix the micro switch 18, when leveling is required, the micro switch 18 is inserted into the mounting frame 19, the socket 24 and the interface 25 are plugged in, and the locking rod 22 is controlled by the linear motor 21 to be inserted into the locking hole 26, so that the micro switch 18 is locked in the mounting slot 23, at which time the micro switch 18 is in a connected state with the control system.

[0033] The printing platform 4 includes a base and a support plate 28. A plate slot 29 is opened on the base. The support plate 28 is detachably arranged in the plate slot 29. A support hole 30 is also opened horizontally on the side end of the base. A support column 31 is arranged in the support hole 30. The support hole 30 is threadedly connected with the support column 31. When the support plate 28 needs to be removed, the support column 31 can be loosened to take out the support plate 28. The support plate 28 and the base are detachable, so that the support plate 28 can be easily replaced and repaired. At the same time, the appropriate support plate 28 can be selected according to different printing materials to increase the applicability of the equipment. The support plate 28 is pressed tightly by the support column 31 to prevent the support plate 28 from sliding and offset during printing.

[0034] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An automatic leveling structure for a 3D printer, comprising a base plate (1), a three-axis driving assembly (2) arranged on the base plate (1), a nozzle (3) arranged on the three-axis driving assembly (2), and a printing platform (4) arranged on the base plate (1), wherein: The invention also comprises a control system and an adjustment component (5) arranged between the base plate (1) and the printing platform (4), wherein the adjustment component (5) is arranged at the four corners of the printing platform (4) respectively, and a driving motor (7) for driving the adjustment component (5) to automatically adjust is also arranged at the bottom of the base plate (1), and a detection component (6) for detecting the coordinates in the Z-axis direction is also arranged on the nozzle (3), and the detection component (6) and the driving motor (7) are both electrically connected to the control system, and the detection component (6) transmits the Z-axis height data of each point on the printing platform (4) to the control system, and the control system drives the corresponding driving motor (7) according to the Z-axis height data to adjust the Z-axis heights of each point on the printing platform (4) to be consistent.

2. The automatic leveling structure of a 3D printer according to claim 1, characterized in that: The adjustment component (5) comprises an adjustment column (8) and a spring (9); a through hole (10) for the adjustment column (8) to pass through is provided on the printing platform (4); a pressure head (11) is provided on the top of the adjustment column (8); the pressure head (11) abuts against the upper end surface of the printing platform (4); the spring (9) is sleeved on the adjustment column (8); one end of the spring (9) abuts against the lower end surface of the printing platform (4) and the other end abuts against the bottom plate (1); the driving motor (7) drives the adjustment column (8) to move up and down.

3. The automatic leveling structure of a 3D printer according to claim 2, characterized in that: The bottom plate (1) is also provided with a limiting column (12), a limiting hole (13) is provided in the middle of the limiting column (12), limiting protrusions (14) are provided at both ends of the limiting hole (13), limiting grooves (15) are provided at both ends of the adjusting column (8), the limiting protrusions (14) are slidably connected to the limiting grooves (15), a screw rod (16) is provided at the output end of the driving motor (7), a screw hole (17) is provided at the bottom of the adjusting column (8), and the screw rod (16) is threadedly connected to the screw hole (17).

4. The automatic leveling structure of a 3D printer according to claim 1, characterized in that: The detection component (6) comprises a micro switch (18), a mounting frame (19) is provided at the side end of the nozzle (3), and the micro switch (18) is arranged on the mounting frame (19).

5. The automatic leveling structure of a 3D printer according to claim 4, characterized in that: The micro switch (18) is detachably connected to the mounting frame (19); a placement frame (20) for placing the micro switch (18) is also provided at the side end of the printing platform (4); and a locking member for fixing the micro switch (18) is also provided on the mounting frame (19).

6. The automatic leveling structure of a 3D printer according to claim 5, characterized in that: The locking member comprises a linear motor (21) mounted on a side end of a mounting frame (19); a locking rod (22) is arranged at an output end of the linear motor (21); a mounting slot (23) is provided on the mounting frame (19); a tail of the micro switch (18) is adapted to the mounting slot (23); a locking hole (26) is provided at the tail of the micro switch (18); the locking rod (22) is slidably matched with the locking hole (26) to fix the micro switch (18).

7. The automatic leveling structure of a 3D printer according to claim 1, characterized in that: The printing platform (4) includes a base and a support plate (28), wherein a plate slot (29) is provided on the base, wherein the support plate (28) is detachably arranged in the plate slot (29), and an abutment hole (30) is also laterally provided on the upper side end of the base, wherein an abutment column (31) is arranged in the abutment hole (30), and the abutment hole (30) is threadedly connected to the abutment column (31).

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