3D printing device

Abstract

The invention provides a 3D printing device which comprises a housing, a crucible arranged in the housing, a cover plate fixed at the top of the housing and sealing the crucible, a liquid transportingdevice and a pressure transporting device communicating with the crucible, an outer spray nozzle fixed at the bottom of the housing, a first temperature control device for controlling the liquid temperature in the crucible, and an industrial control device, and further comprises a second thermocouple and a second heater, which are arranged in the outer spray nozzle and are close to an outlet, anda second temperature controller electrically connected with the second thermocouple and the second heater. A slide block is arranged in the outer spray nozzle, is connected with a first motor, and can open or close the outlet under the driving action of the first motor. The first motor is electrically connected with the industrial control device. A concentrated liquid flow is in the high-temperature state by heating of the heater, so that the condition that liquid is cooled and solidified to block the outlet of the spray nozzle is avoided, and a gas membrane channel constrains the concentrated liquid flow, so that the concentrated liquid flow is prevented from being in contact with the spray nozzle, and the blocking of the spray nozzle is further prevented.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a 3D printing device. Background technique [0002] 3D (Three-dimensional, three-dimensional) printing, also known as additive manufacturing, can manufacture parts by discretizing the three-dimensional model into two-dimensional cross-sections, using a method of layer-by-layer accumulation, without using molds, and overcoming the limitations of traditional processing methods. Parts with complex structures. Especially for titanium alloys and high-temperature alloys that are widely used in aerospace, the method of additive manufacturing can produce structurally optimized parts that cannot be prepared by traditional processing methods, which not only reduces the overall weight and improves efficiency, but also helps save the country important strategic resource. [0003] At present, additive manufacturing mainly adopts laser, electron beam, ultraviolet light and oth...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the solution with high melting point or easy to solidify is easy to clog the nozzle, it is necessary to provide a 3D printing device that can effectively avoid clogging the nozzle, has high additive manufacturing efficiency, and has no restrictions on the shape of the material.

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