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CN-224210564-U - Z-axis movement device of 3D printer

CN224210564UCN 224210564 UCN224210564 UCN 224210564UCN-224210564-U

Abstract

The utility model discloses a Z-axis movement device of a 3D printer, which comprises a printing platform, wherein the printing platform is fixed in a lifting frame, ball screws capable of synchronously rotating are arranged at four corners of the lifting frame, the lifting frame is matched with the ball screws through ball screw nuts, the lifting frame and the printing platform are driven to lift together when the ball screws rotate, the left side and the right side of the printing platform are symmetrically arranged along a central line, the lifting frame comprises two cross beams and two longitudinal beams, the cross beams are connected with the front end and the rear end of the longitudinal beams through the ball screw nuts, a fixed frame is arranged above the cross beams, and the printing platform is fixed in the fixed frame.

Inventors

  • CHEN BAOHUA
  • CHEN RUIQIANG
  • FAN LIYE
  • WANG YIKE
  • WANG HAIYANG

Assignees

  • 河南速维电子科技有限公司

Dates

Publication Date
20260508
Application Date
20250428

Claims (8)

  1. 1. The utility model provides a 3D printer Z axle motion device, its characterized in that, includes print platform, print platform fixes in the lift frame, four angles departments of lift frame are equipped with synchronous pivoted ball, the lift frame passes through ball nut and ball cooperation, drive lift frame and print platform and go up and down together when ball rotates, print platform's left and right sides sets up along central line symmetry.
  2. 2. The Z-axis motion device of a 3D printer according to claim 1, wherein the lifting frame comprises two cross beams and two longitudinal beams, the cross beams and the longitudinal beams are connected end to end through ball screw nuts, a fixing frame is arranged above the cross beams, and the printing platform is fixed in the fixing frame.
  3. 3. The Z-axis motion device of a 3D printer according to claim 1 or 2, wherein the bottom of the ball screw is provided with a first synchronous wheel fixedly arranged, the two synchronous wheels on the same side are driven by a first synchronous belt, and the first synchronous belt is in driving connection with the stepper motor through a first T-shaped frame.
  4. 4. The Z-axis motion device of a 3D printer according to claim 3, wherein two limiting wheels are arranged in the first T-shaped frame, the back surface of the first synchronous belt contacts the circumference of the limiting wheels, a second synchronous wheel is arranged on the output shaft of the stepping motor, and the first synchronous belt is matched with the second synchronous wheel after passing through the limiting wheels.
  5. 5. The Z-axis motion device of a 3D printer according to claim 4, wherein the stepper motor is further provided with a third synchronizing wheel at an end of the output shaft, and the two stepper motors are cooperatively driven at the third synchronizing wheel through a second synchronizing belt.
  6. 6. The Z-axis motion device of a 3D printer according to claim 5, wherein the second synchronous belt further comprises a second T-shaped frame and a tensioning frame, a tensioning wheel is arranged in the tensioning frame, the second synchronous belt is matched with the tensioning wheel after passing through a limiting wheel in the second T-shaped frame, and the tensioning wheel moves forwards and backwards to adjust tightness of the second synchronous belt.
  7. 7. The Z-axis moving device of the 3D printer according to claim 1, wherein an optical axis is further provided between the two ball screws on the same side.
  8. 8. The Z-axis moving device of the 3D printer according to claim 1, wherein the top end of the ball screw is fixed at the top of the case through a bearing and a horizontal optical axis bracket, and the bottom end of the ball screw is rotatably connected with the case through a fixing seat.

Description

Z-axis movement device of 3D printer Technical Field The utility model relates to the technical field of 3D printing, in particular to a Z-axis movement device of a 3D printer. Background The Z-axis motion device of the 3D printer is a core part responsible for controlling the movement of a printing platform or a spray head in the vertical direction (Z-axis), and the design and the performance of the Z-axis motion device directly influence the printing precision, the interlayer adhesion degree and the overall printing quality. The prior proposal comprises a single T-shaped screw rod, a double optical axis, a single ball screw rod, a double optical axis and a double ball screw rod, wherein the optical axis can be replaced by a linear guide rail. The whole screw rod or screw rod is driven to rotate through a stepping motor, and the nut and the platform or the spray head are driven to move up and down. The T-shaped screw rod and double-optical axis structure has the problems of poor return and low transmission in use, accords with smaller problems, is lack of self-locking property, is easy to slide down due to gravity after power failure, is also lack of self-locking property, and is easy to shake due to the fact that front end and rear end of the platform are stress points, and is poor in stability. Therefore, a motion device capable of ensuring self-locking of the printing platform, enabling the printing platform to stably lift and overcome transmission errors is needed. Disclosure of utility model The utility model aims to solve the problems and provide the Z-axis movement device of the 3D printer, which can ensure the power-off self-locking and stable lifting of the printing platform, overcome transmission errors in the movement process and avoid platform deviation. In order to achieve the purpose, the technical scheme is that the Z-axis movement device of the 3D printer comprises a printing platform, wherein the printing platform is fixed in a lifting frame, ball screws capable of synchronously rotating are arranged at four corners of the lifting frame, the lifting frame is matched with the ball screws through ball screw nuts, the lifting frame and the printing platform are driven to lift together when the ball screws rotate, and the left side and the right side of the printing platform are symmetrically arranged along a central line. Preferably, the lifting frame comprises two cross beams and two longitudinal beams, the cross beams and the longitudinal beams are connected end to end through ball screw nuts, a fixing frame is arranged above the cross beams, and the printing platform is fixed in the fixing frame. Preferably, the bottom of ball all is equipped with the first synchronizing wheel of fixed setting, passes through first hold-in range transmission between two synchronous pulleys of homonymy, first hold-in range is connected with step motor transmission through first T type frame. Preferably, two limiting wheels are arranged in the first T-shaped frame, the back surface of the first synchronous belt contacts with the circumference of the limiting wheels, a second synchronous wheel is arranged on the output shaft of the stepping motor, and the first synchronous belt is matched with the second synchronous wheel after passing through the limiting wheels. Preferably, the end part of the output shaft of the stepping motor is also provided with a third synchronous wheel, and the two stepping motors are cooperatively driven at the third synchronous wheel through a second synchronous belt. Preferably, the second synchronous belt further comprises a second T-shaped frame and a tensioning frame, a tensioning wheel is arranged in the tensioning frame, the second synchronous belt is matched with the tensioning wheel after passing through a limiting wheel in the second T-shaped frame, and the tensioning wheel moves forwards and backwards to adjust tightness of the second synchronous belt. Preferably, an optical axis is further arranged between the two ball screws on the same side. Preferably, the top of the ball screw is fixed at the top of the case through a bearing and a horizontal optical axis bracket, and the bottom of the ball screw is rotatably connected with the case through a fixed seat. The utility model discloses a Z-axis movement device of a 3D printer, which comprises a printing platform, wherein the printing platform is fixed in a lifting frame, ball screws capable of synchronously rotating are arranged at four corners of the lifting frame, the lifting frame is matched with the ball screws through ball screw nuts, the lifting frame and the printing platform are driven to lift together when the ball screws rotate, the left side and the right side of the printing platform are symmetrically arranged along a central line, the lifting frame comprises two cross beams and two longitudinal beams, the cross beams are connected with the front end and the rear end of the longitudinal beams through ball scre