3d printing feeding device

Abstract

The invention relates to quick forming technology field and aims at providing a 3D (three dimensional) printing feeding device which comprises a baseboard and at least two printing heads, wherein each printing head comprises a vertical board, a rotation arm, a supporting block, a wire feeding roll, a wire feeding gear, a stepping motor and a feeding head; the vertical board is fixedly connected with the baseboard; the upper end of the rotation arm is provided with an upper inclined surface and is in pivot connection with the vertical board; the supporting block is provided with a lower inclined surface opposite to the upper inclined surface and is fixedly connected with the vertical board; the wire feeding roll is in pivot connection with the lower end of the rotation arm; the wire feeding gear is opposite to the wire feeding roll and is in pivot connection with the vertical board; the stepping motor is fixedly connected with the vertical board, and an output shaft of the stepping motor and the wire feeding gear are fixedly connected; the feeding head is provided with a wire hole and a heating device and is connected with the baseboard; an adjustment spring is arranged between the upper inclined surface and the lower inclined surface. By adopting the 3D printing feeding device, a plurality of plastic materials can be simultaneously used and the precision of discharging materials is relatively high.

Description

technical field [0001] The invention relates to the technical field of rapid prototyping, in particular to a 3D printing feeding device. Background technique [0002] 3D printing (three-dimensional printing) is a kind of rapid prototyping technology. It is based on a digital model file, using plastic and other materials, extruded through a nozzle with a fine nozzle, and heated at a temperature lower than solid [0003] It begins to solidify after heating temperature, and finally forms a finished product through layer-by-layer accumulation of plastic materials. It is a technology to construct objects by layer-by-layer printing. Chinese patent application number: CN201310242128.4 discloses a 3D printing nozzle, including: a melt tank, an electric valve, a gear pump, a first motor, a second motor and a nozzle; wherein, the first motor is fixedly arranged on One side of the electric valve, and controls the switch of the electric valve; the second motor control is fixedly arrang...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of current 3D printing nozzles that cannot use multiple plastic materials at the same time and have low output accuracy, and provide a 3D printing feeding device that can use multiple plastic materials at the same time and has high output accuracy

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