Adaptive feeder for 3D printer head

Abstract

The invention discloses an adaptive feeder for a 3D printer head. The adaptive feeder is composed of an elastic handle, a pedestal and a spring. The elastic handle is hinged on the pedestal, and the spring is arranged between the elastic handle and the pedestal. The elastic handle is composed of a handle, a bearing and an end cap. The pedestal is composed of a motor, a mechanism base and a wire feed roll. A wire material is arranged between the bearing and the wire feed roll. Under the action of the spring, the elastic handle drives the bearing to tightly press the wire material on the wire feed roll, and it is ensured that the position of the wire material is directly facing a pipework. The adaptive feeder provided by the invention has low sensitivity to mechanism abrasion and diameter size of the wire material, thus avoiding wire blocking, wire slipping and unstable extrusion force. The adaptive feeder has advantages of convenient feeding and returning operation, simple structure and low cost.

Description

technical field [0001] The invention relates to the field of structural design of 3D printers, in particular to an adaptive feeding device for nozzles of fused deposition 3D printers. Background technique [0002] 3D printing technology appeared in the 1980s and is often called "rapid prototyping machine technology". However, due to cost reasons, it has only entered the art world and industry in recent years, where it is used to make prosthetics, auto parts, furniture and jewelry. [0003] The working principle of the fused deposition 3D printer is: through the nozzle, the solid molding material is heated into a semi-molten state and then extruded, and manufactured layer by layer according to the predetermined trajectory of each layer of the part. This repeated construction casts the final entity. [0004] The solid molding material is sent to the nozzle of the 3D printer through the feeding device of the fused deposition 3D printer. Since the feeding speed of the feeding...

AI Technical Summary

Problems solved by technology

[0005] However, the existing feeding device still has the following problems: 1. Due to long-term work, the feeding device is worn out, which will cause problems such as silk slippage, slow wire movement, and uneven extrusion force, resulting in reduced printing accuracy of the machine and weakened workpiece strength; 2. The existing feeding device ensures that the wire material is fed into the throat through the position and size of the material inlet and outlet. In the process, the filament material expands after heating, which will cause the phenomenon that the filament material is stuck in the outlet when the material is returned, which brings a lot of inconvenience to the use of the printer.

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