A transmission mechanism of a 3D printer

Abstract

The invention discloses a transmission mechanism of a 3D printer. 2 Z-guiding rods vertically arranged at the front of the base plate are slidingly connected with the front slider, 2 square bars and 2 lead screws are vertically installed at the rear of the base plate, and the square bars pass through the square hole pulleys provided on the rear support. The screw is screwed to the rear support; the front slider is connected to the rear support through the Y-guiding rod, and the Y-guiding rods on both sides are connected to the nozzle bracket through the Y-direction slider to form an H-shaped frame; the Y-direction slider is connected to the The front pulley on the front slider is connected to the nozzle timing belt on the square hole pulley; the Z-direction stepping motor and the Y-direction stepping motor are fixed on the bottom plate; the Z-direction stepping motor drives the screw to rotate and drive through the synchronous belt. The rear support moves along the lead screw, driving the H-shaped frame to move in the Z direction; the Y-direction stepping motor drives the square bar to rotate through the synchronous belt, and the square bar drives the nozzle bracket to move in the Y direction along the Y guide rod through the synchronous belt of the nozzle. In the present invention, the motor controls the nozzle to complete the movement in the up, down, front, back, left, and right directions, so that the performance is more stable.

Description

technical field [0001] The invention relates to a transmission mechanism of a 3D printer. Background technique [0002] FDM technology is to heat the filamentary or granular plastic to a molten state, and at the same time, under the control of the computer, the three-dimensional nozzle selectively coats the material on the working plane according to the cross-sectional profile information, prints out the plane profile, and finishes printing in one layer Finally, the workbench is lowered by one layer thickness or the nozzle is raised by one layer thickness, and the overall shape is finally completed by printing layer by layer. FDM technology is mainly used in small plastic products. [0003] The FDM3D printers currently on the market fix the nozzle on the X-axis slider, the X-axis slider is installed on the X-axis direction guide rail, the X-axis guide rail is fixedly connected to the Y-axis slider, and the Y-axis slider is installed on the On the Y-axis guide rail, the X-a...

AI Technical Summary

Problems solved by technology

[0004] Due to the heavy worktable, the required motor torque is higher and the movement is not smooth

At the same time, both the X-axis motor and the Y-axis motor are installed on the visible surface above the workbench. The motor wires are exposed, easy to be damaged and there is a risk of electric shock, and the precision requirements for the frame are also high.

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