An electrospinning device that can be used for 3D printing

Abstract

The invention discloses an electrostatic spinning device available for 3D (three-dimensional) printing. The electrostatic spinning device comprises a spherical high-voltage electrode, a receiving plate, an insulating connection part, a fixing support, a head, a head heating ring, a miniature screw rod, a coupler, a stepping motor, a heat insulation gasket, a plug, a spinning nozzle, a spinning nozzle heating ring, a ground electrode, a spherical ground electrode, a workpiece, a high-voltage electrostatic generator and the like. When the electrostatic spinning device is in operation, the miniature screw rod rotates to convey melt or solution to the spinning nozzle; the spinning nozzle is in threaded connection with the head, the spherical ground electrode is half wrapped at the lower end of the spinning nozzle, and the melt or solution uniformly flows from the surface of the spherical ground electrode to the lower end of the spherical ground electrode through notches peripherally distributed at the lower end of the spinning nozzle. Since the high-voltage electrode and the ground electrode are both spherical electrodes, the defect of proneness to blockage of needle eyes or pores in normal spinning equipment is overcome, and compared with point electrodes, the spherical electrodes have the advantages that point discharge is alleviated, and higher voltage strength can be achieved under the condition of equal distance.

Description

technical field [0001] The invention relates to an electrostatic spinning device that can be used for 3D printing, and belongs to the field of electrostatic spinning. Background technique [0002] 3D printing (3D printing), a type of rapid prototyping technology, is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. [0003] The 3D printing equipment developed by using plastic materials has the advantages of compact equipment, low price, and wide application. It can be used in large-scale industrial production, and it is also the best choice for 3D printing equipment to enter ordinary people's families in the future. However, the currently developed fused deposition method 3D printing equipment has a nozzle diameter of 0.2-0.6mm, and due to the extrusion expansion effect of the material, the precision of the finished product is not high, which seriously restricts the develo...

AI Technical Summary

Problems solved by technology

[0006] The present invention proposes an electrospinning device that can be used for 3D printing. The electrospinning technology is organically combined with the 3D printing technology. The machine head and the spherical high-voltage electrode are connected together through insulating connectors. The spherical high-voltage electrode moves in the X and Y directions, and the receiving plate moves in the Z direction, which ensures the uniformity of the electric field intensity at the tip of the spinning nozzle to the greatest extent, thereby ensuring the targeting and stability of the deposited fibers. Through software programming Realize the layer-by-layer printing of the workpiece, and then achieve the purpose of 3D printing of precision parts, and can adjust the fineness of the wire by adjusting the high-voltage static electricity and the size of the spinning distance, and then adjust the precision of the parts, or it can be produced without adding static electricity. Fill the inside of the part with silk to further improve the efficiency of 3D printing. Under the premise of triggering a single directional jet, the device can independently control the temperature of the spinning nozzle, which overcomes the disadvantage of difficult temperature control of the needle in conventional needle spinning. , and solve the problem of easy clogging in conventional needle or small hole spinning

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