Melt deposition type 3D printer spray head cooling device

Abstract

The invention provides a melt deposition type 3D printer spray head cooling device which comprises a spray head hot end assembly, the hot end assembly is connected with a venturi assembly through a threaded structure, the venturi assembly is connected with a venturi cooling assembly through a threaded structure, the venturi cooling assembly is connected with a wire feeding mechanism through a fixing frame, the venturi cooling assembly is connected with a refrigerating device through a first cooling pipe connector and a second cooling pipe connector, and a control device is connected with the spray head hot end assembly through a power line. Work of the melt deposition type 3D printer spray head cooling device includes the steps of (1), selection of a PTC heater; (2), installation of the PTC heater; (3), injection of high-temperature conduction oil; (4), injection of heat-exchange liquid; (5), adjustment of a feeding wheel assembly; (6), start of a refrigeration device; (7), start of a venturi temperature sensor; (8), start of the PTC heater; (9), start of a 3D printer; (10), monitoring of material wire temperature; (11), temperature control over the venturi assembly; and by means of the melt deposition type 3D printer spray head cooling device, constant-temperature melting of the material wire in a spray nozzle and self-cooling of the material wire in a heat dissipation body can be achieved.

Description

technical field [0001] The invention belongs to the technical field of 3D printers, and in particular relates to a nozzle cooling device of a fused deposition type 3D printer. Background technique [0002] Fused deposition 3D printing technology is a kind of rapid prototyping technology. Its basic working principle is to process the three-dimensional product model established in the computer in layers to obtain several two-dimensional plane graphics, and then use the wire feeding mechanism of the nozzle to transfer the thermoplastic material Send it to the nozzle and heat it to a molten state. Then, according to the contour information of the two-dimensional plane figure, under the control of the computer, the molten material is extruded from the tiny holes of the nozzle to print these two-dimensional plane figures layer by layer. After layer-by-layer stacking Form a three-dimensional solid model. [0003] During the working process, the nozzles of 3D printers are often clo...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide a nozzle cooling device for a fused deposition type 3D printer, which can effectively reduce the temperature of the radiator and the throat, reduce the thermal expansion of the two filaments, and Make the filament in the throat have enough strength to squeeze the molten filament in the nozzle out of the micropores for printing, so as to solve the problem of nozzle clogging

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