Z-axis lifting mechanism of 3D printing equipment
By employing servo motor drive, planetary helical gear reducer, and marble lifting motion plate in the 3D printing equipment, the problem of insufficient precision in the Z-axis motion mechanism was solved, achieving high-precision and stable printing results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2026-03-13
AI Technical Summary
The Z-axis motion mechanism of existing 3D printing equipment lacks precision, which affects the quality of printed models.
It adopts a servo motor drive, a planetary helical gear right angle reducer, a ball screw and a marble lifting motion plate, combined with a high-precision screw nut and slider guide rail to ensure motion accuracy and load capacity, and eliminate the gap between the screw and the screw nut.
It improves the accuracy and stability of Z-axis motion, enhances load capacity, ensures the vertical orientation of the printing platform remains unchanged, and improves the quality of the printed model.
Smart Images
Figure CN223989074U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to 3D printing equipment, and more particularly to a Z-axis lifting mechanism for 3D printing equipment. Background Technology
[0002] With the continuous improvement of 3D printing technology, metal 3D printing technology has become increasingly mature, and high-precision 3D printing equipment has emerged. Currently, the mainstream metal 3D printing equipment basically uses lasers to melt metal powder layer by layer, thereby printing the metal model layer by layer. During printing, the printing platform needs to repeatedly descend, spread powder, and print, cyclically performing the above actions until the model to be printed is completed. This layer-by-layer printing method has very high requirements for the descent accuracy and stability of the printing platform. However, the existing Z-axis motion mechanism has insufficient accuracy, which greatly affects the quality of the printed model. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a Z-axis lifting mechanism for 3D printing equipment that has high lifting motion accuracy, strong load-bearing capacity, and stable structure, in order to address the shortcomings of the existing technology.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.
[0005] A Z-axis lifting mechanism for a 3D printing device includes a drive motor, a reducer, a lead screw, a lead screw nut, a lifting motion plate, and a printing platform. The lead screw and the lifting motion plate are parallel to each other and both are vertically arranged. The reducer is drivenly connected between the drive end of the drive motor and the lower end of the lead screw. The lead screw passes through the lead screw nut, and the two are threadedly linked. The lead screw nut is fixedly connected to the lifting motion plate, which is a marble slab. The printing platform is fixed to the top of the lifting motion plate.
[0006] Preferably, it includes a lead screw fixing seat, through which the lead screw passes and the two are rotatably engaged.
[0007] Preferably, the lead screw fixing seat is located below the lead screw nut.
[0008] Preferably, the lower end of the lead screw is connected to the power output end of the reducer via a coupling.
[0009] Preferably, the reducer is a planetary helical gear right-angle reducer.
[0010] Preferably, the drive motor is a servo motor.
[0011] Preferably, it includes a vertical slide rail, and a slider is fixed to the back of the lifting motion plate, the slider slidingly engaging with the vertical slide rail.
[0012] In the Z-axis lifting mechanism of the 3D printing equipment disclosed in this utility model, the drive motor and the reducer can be fixedly installed on the frame of the 3D printing equipment. The lead screw can be supported by a fixed seat that rotates with it. The lifting motion plate can slide vertically relative to the frame. When the drive motor rotates, it drives the lead screw through the reducer. Based on the threaded engagement between the lead screw and the lead screw nut, the lifting motion plate is driven to move up and down. This utility model uses servo motors, high-precision lead screws, and other mechanisms to ensure its operating accuracy. The lifting motion plate is made of marble, so that this utility model will not deform due to excessive load or natural gravity under long-term working conditions. At the same time, the marble material of the lifting motion plate can ensure that the vertical posture remains unchanged. Under natural gravity, it can eliminate the gaps existing between the lead screw and the lead screw nut and inside the reducer, thereby improving the Z-axis motion accuracy. In addition, this utility model has a stronger load-bearing capacity and a more stable structure. Attached Figure Description
[0013] Figure 1 This is a front view of the Z-axis lifting mechanism of the 3D printing equipment of this utility model;
[0014] Figure 2 This is a side view of the Z-axis lifting mechanism of the 3D printing equipment of this utility model. Detailed Implementation
[0015] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.
[0016] This utility model discloses a Z-axis lifting mechanism for a 3D printing device, combined with... Figure 1 and Figure 2 As shown, it includes a drive motor 1, a reducer 2, a lead screw 3, a lead screw nut 4, a lifting motion plate 5, and a printing platform 6. The lead screw 3 and the lifting motion plate 5 are parallel to each other and both are vertically arranged. The reducer 2 is driven between the drive end of the drive motor 1 and the lower end of the lead screw 3. The lead screw 3 passes through the lead screw nut 4 and the two are threadedly linked. The lead screw nut 4 is fixedly connected to the lifting motion plate 5. The lifting motion plate 5 is a marble slab. The printing platform 6 is fixed to the top of the lifting motion plate 5.
[0017] In the above structure, the drive motor 1 and the reducer 2 can be fixedly installed on the frame of the 3D printing equipment. The lead screw 3 can be supported by a fixed seat that rotates with it. The lifting motion plate 5 can slide vertically relative to the frame. When the drive motor 1 rotates, it drives the lead screw 3 through the reducer 2. Based on the threaded engagement between the lead screw 3 and the lead screw nut 4, the lifting motion plate 5 is driven to move up and down. This utility model uses servo motors, high-precision lead screws and other mechanisms to ensure its operating accuracy. The lifting motion plate 5 is made of marble, so that this utility model will not deform due to excessive load or natural gravity under long-term working conditions. At the same time, the marble material of the lifting motion plate 5 can ensure that the vertical posture remains unchanged. Under natural gravity, it can eliminate the gaps between the lead screw and the lead screw nut and inside the reducer, thereby improving the Z-axis motion accuracy. In addition, this utility model has a stronger load-bearing capacity and a more stable structure.
[0018] To support the lead screw 3, this embodiment includes a lead screw fixing seat 7, through which the lead screw 3 passes and is rotatably engaged. Furthermore, the lead screw fixing seat 7 is located below the lead screw nut 4.
[0019] In a preferred embodiment, the lower end of the lead screw 3 is connected to the power output end of the reducer 2 via a coupling 8. In this embodiment, the reducer 2 is a planetary helical gear right-angle reducer. The drive motor 1 is a servo motor.
[0020] In a preferred embodiment of this invention, the Z-axis lifting mechanism of the 3D printing equipment uses a servo motor as the power source for Z-axis lifting motion. A high-precision planetary helical gear reducer amplifies the output force of the servo motor, increasing the operating load of the structure. The high-precision planetary helical gear reducer adopts an L-shaped right angle to reduce the height of the structure in the Z-direction, thereby reducing space and increasing the Z-axis travel. A high-torque, high-rigidity coupling connects the reducer output end and the ball screw. The ball screw uses high precision, ground, and low lead to improve its accuracy and load capacity. Two sets of high-precision, high-load double-slider guide rails serve as the guiding and load-bearing components for the vertical up-and-down movement of the axis. The connection between the printing platform, guide rail sliders, and ball screw nuts is made of marble. The marble's resistance to deformation, high hardness, and long service life ensure the overall stability of the structure and its long-term usability, preventing accuracy reduction due to structural deformation.
[0021] As a preferred embodiment, this embodiment includes a vertical slide rail 9, and a slider 10 is fixed to the back of the lifting motion plate 5. The slider 10 slides in conjunction with the vertical slide rail 9. In practical applications, when the servo motor is running, it drives the reducer to rotate, and through the coupling, it drives the ball screw to rotate, thereby causing the marble to move upward or downward. The servo motor, high-precision ball screw, and high-precision guide rail used in this embodiment are the main sources of ensuring the structural operating accuracy. Using a low-lead ball screw and reducer can improve the load capacity of the structure. The main connecting parts are made of marble to ensure that the structure will not deform due to excessive load or natural gravity during long-term use, thus affecting its accuracy. This structural design can eliminate the gaps between the ball screw and the ball screw nut and inside the reducer under natural gravity, thereby improving the Z-axis accuracy.
[0022] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.
Claims
1. A 3D printing apparatus Z-axis lifting mechanism, characterized in that, The utility model relates to a 3D printer, including drive motor (1), speed reducer (2), screw rod (3), screw rod nut (4), lift movement board (5) and printing platform (6), the screw rod (3) with lift movement board (5) each other parallel and both vertical settings, speed reducer (2) transmission connection is driven in drive motor (1) the drive end with the lower end between screw rod (3), screw rod (3) passes through screw rod nut (4) and both thread linkage cooperation, screw rod nut (4) with lift movement board (5) fixed connection, lift movement board (5) is marble board, printing platform (6) is fixed in lift movement board (5) top.
2. The 3D printing device Z-axis lifting mechanism according to claim 1, characterized in that, Including screw rod fixed seat (7), the screw rod (3) passes through the screw rod fixed seat (7) and both rotation cooperation.
3. The 3D printing device Z-axis lifting mechanism of claim 2, wherein, The screw rod fixed seat (7) is located below the screw rod nut (4).
4. The 3D printing apparatus Z-axis lifting mechanism according to claim 1, wherein, The lower end of the screw rod (3) and the power output end of the speed reducer (2) are connected by a shaft coupling (8).
5. The 3D printing device Z-axis lifting mechanism according to claim 1, characterized in that, The speed reducer (2) is a planetary helical gear right-angle speed reducer.
6. The 3D printing device Z-axis lifting mechanism of claim 1, wherein, The drive motor (1) is a servo motor.
7. The 3D printing device Z-axis lifting mechanism according to claim 1, characterized in that, Including vertical slide rail (9), the back of lift movement board (5) is fixed with sliding block (10), the sliding block (10) and vertical slide rail (9) slide fit.