Material discharging control system of novel FDM printer

Abstract

The invention provides a novel FDM printer discharge control system, including wire, connecting rod, spring, extrusion gear, pressure sensor, extrusion motor, circuit board and bracket; wherein, the bottom end of the connecting rod is provided with an extrusion Out of the roller, the top end is connected to the input end of the pressure sensor through the spring; the wire passes through the middle of the extrusion roller and the extrusion gear; the extrusion gear is connected to the extrusion through a rotating shaft The motor is connected; the output end of the pressure sensor is connected to the circuit board through a wire; the circuit board is connected to the extrusion motor through a wire. The novel FDM printer discharge control system provided by the invention adjusts the extrusion speed by detecting the diameter of the wire, stabilizes the supply of the wire, and ensures the molding quality.

Description

technical field [0001] The invention relates to the technical field of three-dimensional printing and molding, in particular to a novel FDM printer discharge control system. Background technique [0002] 3D printing technology is a high-tech based on the principle of additive manufacturing method, which is the continuation and development of rapid prototyping technology. The key to realize 3D printing technology is 3D printer and 3D printing free forming process. There are currently five common commercial 3D printing processes: laser curing (SLA), laser sintering (SLS), patch writing (LOM), inkjet sticky powder (3DP), and melt extrusion molding (FDM). [0003] Fused extrusion molding (FDM) is also called fused filament deposition molding. Its main material is thermoplastic material, such as wax, ABS, PLA, etc., and it is fed in filament form. The material is heated and melted in the nozzle, and the nozzle moves along the cross-sectional contour of the part and the filling t...

AI Technical Summary

Problems solved by technology

[0004] The advantage of FDM technology is that it is simple to manufacture and low in operation and maintenance costs, but there is a common problem with current FDM printers: the current FDM printer is not intelligent, it operates under the assumption that the diameter of the wire is very uniform

[0007] The above two utility models disclose the feeding and discharging device for wire materials. The first utility model is to make the wire feeding smoothly by pressing down the adjusting lever installed in the cavity of the wire import block; the second utility model is to use two A stepping motor increases the extrusion force on the printer wire, which can realize stable extrusion of the wire; the above two utility models can realize the discharge of the wire, but cannot realize the real-time control of the diameter of the discharge wire during the discharge process. , may cause uneven discharge wire

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