Large 3D printer based on FDM principles

Abstract

The invention discloses a large 3D printer based on FDM principles. The 3D printer comprises an automatic leveling system, a heat dissipation control system, a material suspension control system and a process display system. The automatic leveling system comprises a range finder, a work panel, a pedestal, motors and springs, wherein the range finder is mounted above the work panel, the work panel is connected with the motors, and motor shafts are provided with the springs. The heat dissipation control system adopts a large area of fans. The material suspension control system comprises a material support, a material supporting rod, a material coil and wire rod plastics. The process display system comprises an LCD display screen and a circuit of a corresponding LCD. The large 3D printer based on the FDM principles in the invention can print large plastic structural members, enables the success rate of printing to be increased and improves reliability of FDM-series 3D printing equipment.

Description

technical field [0001] The invention relates to a printing device, in particular to a 3D printer. Background technique [0002] At present, the 3D printing manufacturing technologies on the market mainly include FDM fusion lamination molding technology, 3DP technology, SLA stereolithography technology, SLS selective laser sintering technology, DLP laser molding technology, and UV ultraviolet molding technology. [0003] FDM fusion lamination molding technology is to heat and melt the filamentous hot-melt material, and at the same time, under the control of the computer, the three-dimensional nozzle selectively coats the material on the workbench according to the cross-sectional profile information, and forms a layer after rapid cooling. section. After one layer of molding is completed, the machine table is lowered to a height (that is, the thickness of the layer) and then the next layer is formed until the entire solid shape is formed. There are many kinds of molding mater...

AI Technical Summary

Problems solved by technology

[0010] 1. The leveling of the working panel is manual leveling, which is not only troublesome but also has large errors, which has a great impact on the molding rate of the model;

[0011] 2. FDM technology has uneven cooling of the model and warping occurs, which makes FDM technology unable to print large-size parts;

[0012] 3. At present, the FDM printers on the market adopt the feeding method of side-hanging material, which makes the material enter the nozzle in the form of a curve under the drive of the feeding mechanism, which increases the resistance of the feeding and prevents the rotation of the material tray. , Difficulty feeding and other phenomena will have a serious impact on the process of printing the model, and will damage the machine;

[0013] 4. At present, FDM 3D printers lack a monitoring device for nozzle blockage, which leads to personnel not being able to find out that the printing model has failed in time, thus wasting a lot of printing calibration time

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