CN218020180U

CN218020180U - Novel high-precision automatic hot bed leveling mechanism suitable for FDM 3D printer

Info

Publication number: CN218020180U
Application number: CN202222152540.4U
Authority: CN
Inventors: 杨丽花; 陈文龙
Original assignee: Shenzhen Zhongchuang 3d Technology Co ltd
Current assignee: Shenzhen Zhongchuang 3d Technology Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-12-13
Anticipated expiration: 2032-08-16

Abstract

The utility model relates to a novel high accuracy hot bed automatic leveling mechanism suitable for FDM 3D printer, including printing structure, platform structure and Z axle motion structure, print structrual installation on Z axle motion structure, Z axle motion structrual installation in platform structure side, print the structure including beating printer head, horizontal proximity switch sensor, sensor sliding seat, nozzle and X axle bearing sliding seat, be provided with on the printer head and extrude step motor, measure the distance between with the platform through horizontal proximity switch sensor, sensor sliding seat fixed mounting in extrude step motor is last, horizontal proximity switch sensor install in on the sensor sliding seat, the nozzle install in on the printer head, beat printer head install in on the X axle bearing sliding seat to the holistic motion of printer head is beaten in the motion drive through X axle bearing sliding seat.

Description

Novel high-precision automatic hot bed leveling mechanism suitable for FDM 3D printer

Technical Field

The utility model relates to a 3D printer technical field specifically is a novel high accuracy hot bed automatic leveling mechanism suitable for FDM 3D printer.

Background

In FDM 3D prints the molding technique, model print platform's roughness plays crucial effect to the printer operation, and under the general condition, FDM 3D printer all need carry out the leveling to model print platform before beginning to print to guarantee that the model can be stable, smooth adhesion is on print platform, ensures that the printing process is steady smoothly, and the printing failure rate reduces, and traditional FDM 3D printer leveling mode has two kinds: manual leveling and semi-automatic auxiliary leveling. The traditional manual leveling is to manually adjust a nut below a hot bed platform and control the compression amount of a hot bed spring to control the height of the hot bed platform, while the semi-automatic auxiliary leveling is to detect the heights of a printing head and a hot bed by adopting a sensor assembled on the printing head part and then manually adjust the nut below the hot bed platform to ensure the flatness of the printing platform; the traditional leveling mode is complicated, whether the platform is level or not is judged by purely manual vision, so that the leveling precision is low, and the printing failure rate is high.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a be applicable to the novel high accuracy hot bed automatic leveling mechanism of FDM 3D printer to solve the problem of mentioning in the background art.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a be applicable to novel high accuracy hot bed automatic leveling mechanism of FDM 3D printer, is including printing structure, platform structure and Z axle motion, print the structure and install in Z axle motion, Z axle motion install in platform structure side through the cooperation installation of printing structure, platform structure and Z axle motion, constitutes whole 3D printer structure, print the structure including beating printer head, horizontal proximity switch sensor, sensor sliding seat, nozzle and X axle bearing sliding seat, be provided with on the printer head and extrude step motor, realize the printing function of printer through the cooperation of beating printer head and nozzle, measure through horizontal proximity switch sensor and platform distance between, sensor sliding seat fixed mounting in extrude step motor is last, horizontal proximity switch sensor install in on the sensor sliding seat, the nozzle install in on the printer head, beat printer head install in on the X axle bearing sliding seat to there is the difference in height between the mounting height of nozzle and the mounting height of horizontal proximity switch sensor, this difference in height be the distance of reference to the contact is not steel sheet spring to the nozzle of horizontal proximity switch surface spring when still contact.

Preferably, the platform structure comprises a spring steel plate, a Y-axis sliding plate and a heating aluminum plate, four corners of the heating aluminum plate are provided with holes, isolation columns are fixedly arranged on the Y-axis sliding plate, the four isolation columns are arranged, the heating aluminum plate is arranged on the Y-axis sliding plate through matching with the isolation columns, the four isolation columns are identical in standard height, and the heating aluminum plate is fixedly arranged on the Y-axis sliding plate through a central mounting screw of the isolation column, so that the whole printing platform is guaranteed to have an assembly level.

In further preferred, be provided with the magnetism sticker on the heating aluminum plate, the one side of magnetism sticker has viscidity, and the another side has magnetism, adhesive connection between magnetism sticker and the heating aluminum plate, be connected through magnetism between magnetism sticker and the spring steel plate to be connected between heating aluminum plate and the spring steel plate through the magnetism sticker.

Preferably, the Z-axis moving structure includes a Z-axis motor, a Z-axis lead screw, a Z-axis polished rod, a Z-bearing slider seat, an X-axis optical axis and a Z-axis motor fixing seat, the Z-axis motor is installed on the Z-axis motor fixing seat, and the Z-axis motor fixing seat is installed at the side end of the platform structure, so that the printing structure is driven to move up and down through the Z-axis moving structure.

Preferably, the output end of the Z-axis motor is connected with the Z-axis screw rod, the Z-axis motor drives the Z-axis screw rod to rotate, the Z-axis light rod is fixedly installed on a fixed seat of the Z-axis motor, the Z-axis slider seat is slidably installed on the Z-axis light rod and is in threaded connection with the Z-axis screw rod, so that the Z-axis slider seat is driven to move up and down along the Z-axis light rod, two Z-axis slider seats are arranged, an X-axis optical axis is arranged between the two Z-axis slider seats, and the X-axis bearing sliding seat is slidably installed on the X-axis optical axis, so that the printing head installed on the X-axis bearing sliding seat can move longitudinally and move transversely.

In a further preferred mode, a sensor sliding plate is slidably arranged on the sensor sliding seat, the horizontal proximity switch sensor is fixedly mounted on the sensor sliding plate, an M4 height adjusting bolt is arranged between the sensor sliding seat and the sensor sliding plate, the sensor sliding plate is in threaded connection with the M4 height adjusting bolt, and the height of the sensor sliding plate is adjusted by rotating the M4 height adjusting bolt and by means of threaded fit with the sliding plate.

In a further preferred aspect, an adjusting spring is disposed between the sensor sliding seat and the sensor sliding plate, the adjusting spring is sleeved on the M4 height adjusting bolt, and the height difference between the horizontal proximity switch sensor and the nozzle is adjusted by adjusting the compression amount of the adjusting spring.

(III) advantageous effects

Compared with the prior art, the utility model provides a be applicable to novel high accuracy hot bed automatic leveling mechanism of FDM 3D printer possesses following beneficial effect:

1. the utility model discloses in install the sensor sliding seat on beating printer head through the setting to and install the horizontal proximity switch sensor on the sensor sliding seat, through setting up the difference in height between horizontal proximity switch sensor and nozzle, through the decline of beating printer head, make the surface contact of horizontal proximity switch sensor and spring steel sheet, through the contact of horizontal proximity switch sensor and the different positions of spring steel sheet, measure the data of different positions, thereby measure the distance between nozzle and the different positions of spring steel sheet. Therefore, in the printing process, the nozzle can be adjusted according to data at different positions, so that the distance between the nozzle and the spring steel plate is always kept at 0.2mm, and the automatic leveling of the printer is realized.

2. The utility model discloses in set up sensor sliding plate and M4 altitude mixture control bolt and adjusting spring through setting up, through rotating M4 altitude mixture control bolt to adjusting spring's decrement to carry out the regulation of the difference in height between horizontal proximity switch sensor and the nozzle, thereby the precision of accurate control level proximity switch sensor detection spring steel sheet ensures that the more accurate plane degree of calculating out whole spring steel sheet of horizontal proximity switch sensor, and then realizes the platform total dynamic leveling.

3. The utility model discloses in through setting up to connect through the insulated column between heating aluminum plate and the Y axle sliding plate, set up the screw through the center at the insulated column and will heat aluminum plate and Y axle sliding plate and connect to through the same standard height of insulated column, guarantee heating aluminum plate's horizontal installation, thereby guarantee the horizontal installation of horizontal spring steel sheet, the part of guaranteeing the printer and producing is in horizontal position.

Drawings

Fig. 1 is a side view of the overall structure of a novel high-precision hot bed automatic leveling mechanism for an FDM 3D printer in the present invention;

fig. 2 is a schematic structural diagram of a platform structure of a novel high-precision hot bed automatic leveling mechanism suitable for the FDM 3D printer in the present invention;

fig. 3 is a schematic view of a matching structure of a sensor sliding seat and a sensor sliding plate of the novel high-precision automatic hot bed leveling mechanism for the FDM 3D printer in the present invention;

fig. 4 is a schematic structural diagram of a printing structure of a novel high-precision hot bed automatic leveling mechanism suitable for the FDM 3D printer in the present invention;

fig. 5 is the utility model discloses in a be applicable to the overall structure's of the novel high accuracy hot bed automatic leveling mechanism of FDM 3D printer front view.

In the figure: 1. a print head; 2. a horizontal proximity switch sensor; 3. a sensor sliding seat; 4. a nozzle; 5. an X-axis bearing sliding seat; 6. extruding a stepping motor; 7. a spring steel plate; 8. a Y-axis sliding plate; 9. heating the aluminum plate; 10. an isolation column; 11. magnetic stickers; 12. a Z-axis motor; 13. a Z-axis lead screw; 14. a Z-axis polish rod; 15. a Z-bearing slider mount; 16. an X-axis optical axis; 17. a Z-axis motor fixing seat; 18. a sensor sliding plate; 19. m4 height adjusting bolts; 20. the spring is adjusted.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1-5, a novel high-precision automatic leveling mechanism for a hot bed of an FDM (fused deposition modeling) 3D printer comprises a printing structure, a platform structure and a Z-axis moving structure, wherein the printing structure is arranged on the Z-axis moving structure, the Z-axis moving structure is arranged at the side end of the platform structure, and the whole 3D printer structure is formed by the matching installation of the printing structure, the platform structure and the Z-axis moving structure, the printing structure comprises a printing head 1, a horizontal proximity switch sensor 2, a sensor sliding seat 3, a nozzle 4 and an X-axis bearing sliding seat 5, an extrusion stepping motor 6 is arranged on the printing head 1, the printing function of the printer is realized by the matching of the printing head 1 and the nozzle 4, the distance between the horizontal proximity switch sensor 2 and the platform is measured, the sensor sliding seat 3 is fixedly arranged on the extrusion stepping motor 6, the horizontal proximity switch sensor 2 is arranged on the sensor sliding seat 3, the nozzle 4 is arranged on the printing head 1, the printing head 1 is arranged on the X-axis bearing sliding seat 5, so that the whole printing head 1 is driven to move through the movement of the X-axis bearing sliding seat 5, a height difference exists between the installation height of the nozzle 4 and the installation height of the horizontal proximity switch sensor 2, the distance of the height difference is a reference distance, so that when the horizontal proximity switch sensor 2 contacts the surface of the spring steel plate 7, the nozzle 4 does not contact the surface of the spring steel plate 7, the sensor sliding seat 3 is slidably provided with a sensor sliding plate 18, the horizontal proximity switch sensor 2 is fixedly arranged on the sensor sliding plate 18, an M4 height adjusting bolt 19 is arranged between the sensor sliding seat 3 and the sensor sliding plate 18, and the sensor sliding plate 18 is connected with the M4 height adjusting bolt 19 through threads, through rotating M4 height adjusting bolt 19, through with the screw-thread fit between the sliding plate, realize the regulation to sensor sliding plate 18 height, be provided with adjusting spring 20 between sensor sliding seat 3 and the sensor sliding plate 18, adjusting spring 20 cover is established and is installed on M4 height adjusting bolt 19, through the compression of adjusting spring 20, thereby carry out the regulation to the difference in height between level proximity switch sensor 2 and the nozzle 4, thereby realize the auto leveling to the printer and adjust the difference in height between nozzle 4 and the level proximity switch.

Referring to fig. 1-5, in this embodiment, the platform structure includes a spring steel plate 7, a Y-axis sliding plate 8 and a heating aluminum plate 9, four corners of the heating aluminum plate 9 are perforated, four isolation columns 10 are fixedly disposed on the Y-axis sliding plate 8, the four isolation columns 10 are disposed, the heating aluminum plate 9 is mounted on the Y-axis sliding plate 8 through cooperation with the isolation columns 10, the four isolation columns 10 have the same standard height, the heating aluminum plate 9 is fixedly mounted on the Y-axis sliding plate 8 through a screw mounted at the center of the isolation column 10 to ensure that the entire printing platform has an assembly level, a magnetic sticker 11 is disposed on the heating aluminum plate 9, one surface of the magnetic sticker 11 has adhesiveness, the other surface has magnetism, the magnetic sticker 11 is adhesively connected with the heating aluminum plate 9, the magnetic sticker 11 is magnetically connected with the spring steel plate 7, so that the heating aluminum plate 9 is connected with the spring steel plate 7 through the magnetic sticker 11, the Z-axis motion structure comprises a Z-axis motor 12, a Z-axis screw rod 13, a Z-axis polished rod 14, Z-bearing slider seats 15, an X-axis optical shaft 16 and a Z-axis motor 12 fixing seat, wherein the Z-axis motor 12 is arranged on the Z-axis motor 12 fixing seat, the Z-axis motor 12 fixing seat is arranged at the side end of the platform structure, so that the printing structure is driven to move up and down through the Z-axis motion structure, the output end of the Z-axis motor 12 is connected with the Z-axis screw rod 13, the Z-axis screw rod 13 is driven to rotate through the Z-axis motor 12, the Z-axis polished rod 14 is fixedly arranged on the Z-axis motor 12 fixing seat, the Z-axis slider seats are slidably arranged on the Z-axis polished rod 14 and are in threaded connection with the Z-axis screw rod 13, so that the Z-axis slider seats are driven to move up and down along the Z-axis polished rod 14, two Z-axis slider seats are arranged, and the X-axis optical shaft 16 is arranged between the two Z-axis slider seats, the X-axis bearing carriage 5 is slidably mounted on the X-axis optical axis 16 to ensure that the print head 1 mounted on the X-axis bearing carriage 5 can move longitudinally and laterally while providing a horizontal object forming platform for the printer.

Example 2:

to sum up, when the printer performs the platform measurement, the Z-axis motor 12 starts to operate to drive the Z-axis screw 13 to rotate, thereby driving the Z-axis slider seat to move longitudinally along the Z-axis polished rod 14, because the horizontal proximity switch sensor 2 is fixed on the sensor sliding seat 3, the sensor sliding seat 3 is fixed on the extrusion stepping motor 6 of the printing head 1, when the printing head 1 performs the high-low motion, the horizontal proximity switch sensor 2 also moves along with the horizontal proximity switch sensor, when the horizontal proximity switch sensor 2 moves downwards, the horizontal proximity switch sensor contacts with the surface of the spring steel plate 7, thereby limiting the Z-axis to continue moving downwards, thus limiting the distance between the nozzle 4 and the spring steel plate 7 to a certain distance, and taking the distance as a reference distance, horizontal proximity switch sensor 2 carries out multiple spot position to spring steel plate 7 and surveys, survey spring steel plate 7 after different many times, the height between nozzle 4 and the whole spring steel plate 7 plane just can be surveyed out, and the record stores the measured data, then horizontal proximity switch sensor 2 carries out 16 some regional or 25 some regional surveys to spring steel plate 7 whole plane, the record stores the detection data of every regional point, the data height according to every point is in the printing process, nozzle 4 can carry out a small adjustment on every point region according to the difference of data, the higher region of data, Z axle motor 12 will rotate, reduce certain distance with nozzle 4 downwards, keep the distance between nozzle 4 and the spring steel plate 7 to keep at 0.2mm.

Example 3:

in summary, when the distance between the nozzle 4 and the horizontal proximity switch sensor 2 is adjusted, the M4 height adjusting bolt 19 is used to pass through the through hole on the sensor sliding seat 3, then the sleeve is spring-locked into the M4 threaded hole of the sensor sliding plate 18, and the adjusting bolt is screwed to adjust the compression amount of the adjusting spring 20, so that the height difference between the horizontal proximity switch sensor 2 and the nozzle 4 is adjusted, and thus the accuracy of the horizontal proximity switch sensor 2 for detecting the platform spring steel plate 7 is accurately controlled to ensure that the flatness of the whole platform spring steel plate 7 is accurately measured by the horizontal proximity switch sensor 2, and further the platform total dynamic leveling is realized.

In summary, in all the above-mentioned solutions, the connection between two components may be selected from welding, bolt and nut fit connection, bolt or screw connection or other known connection methods according to actual situations, which are not described herein in detail, and in the above description, all the references relate to fixed connection, and welding is preferred, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a be applicable to novel high accuracy hotbed automatic leveling mechanism of FDM 3D printer, includes printing structure, platform structure and Z axle motion, print the structure and install on Z axle motion, Z axle motion install in platform structure side, its characterized in that, print the structure including beat printer head (1), horizontal proximity switch sensor (2), sensor sliding seat (3), nozzle (4) and X axle bearing sliding seat (5), it extrudes step motor (6) to be provided with on printer head (1), sensor sliding seat (3) fixed mounting in extrude on step motor (6), horizontal proximity switch sensor (2) install in on sensor sliding seat (3), nozzle (4) install in beat printer head (1) on, beat printer head (1) install in on X axle bearing sliding seat (5), there is the difference in height between the mounting height of nozzle (4) and the mounting height of horizontal proximity switch sensor (2).

2. The novel high-precision automatic hot bed leveling mechanism suitable for the FDM 3D printer is characterized in that the platform structure comprises a spring steel plate (7), Y-axis sliding plates (8) and heating aluminum plates (9), four corners of each heating aluminum plate (9) are provided with holes, isolation columns (10) are fixedly arranged on the Y-axis sliding plates (8), four isolation columns (10) are arranged, and the heating aluminum plates (9) are installed on the Y-axis sliding plates (8) through matching with the isolation columns (10).

3. The novel high-precision automatic hot bed leveling mechanism suitable for the FDM 3D printer is characterized in that a magnetic sticker (11) is arranged on the heating aluminum plate (9), the magnetic sticker (11) is connected with the heating aluminum plate (9) in an adhesive mode, and the magnetic sticker (11) is connected with the spring steel plate (7) in a magnetic mode.

4. The novel high-precision automatic hot bed leveling mechanism suitable for the FDM 3D printer is characterized in that the Z-axis moving structure comprises a Z-axis motor (12), a Z-axis lead screw (13), a Z-axis light bar (14), a Z-bearing slider seat (15), an X-axis optical axis (16) and a Z-axis motor (12) fixing seat, the Z-axis motor (12) is installed on the Z-axis motor (12) fixing seat, and the Z-axis motor (12) fixing seat is installed at the side end of the platform structure.

5. The novel high-precision automatic hot bed leveling mechanism suitable for the FDM 3D printer is characterized in that the output end of the Z-axis motor (12) is connected with a Z-axis screw rod (13), the Z-axis polished rod (14) is fixedly installed on a fixed base of the Z-axis motor (12), the Z-axis slider base is slidably installed on the Z-axis polished rod (14) and is in threaded connection with the Z-axis screw rod (13), two Z-axis slider bases are arranged, an X-axis optical axis (16) is arranged between the two Z-axis slider bases, and the X-axis bearing sliding base (5) is slidably installed on the X-axis optical axis (16).

6. The novel high-precision automatic hot bed leveling mechanism suitable for the FDM 3D printer is characterized in that a sensor sliding plate (18) is slidably arranged on the sensor sliding seat (3), the horizontal proximity switch sensor (2) is fixedly installed on the sensor sliding plate (18), an M4 height adjusting bolt (19) is arranged between the sensor sliding seat (3) and the sensor sliding plate (18), and the sensor sliding plate (18) is in threaded connection with the M4 height adjusting bolt (19).

7. The novel high-precision automatic hot bed leveling mechanism suitable for the FDM 3D printer according to claim 6, wherein an adjusting spring (20) is arranged between the sensor sliding seat (3) and the sensor sliding plate (18), and the adjusting spring (20) is sleeved on the M4 height adjusting bolt (19).