3D (3-dimensional) printing device

Abstract

The invention provides a 3D (3-dimensional) printing device, which comprises a case, a crucible, a cover plate, a liquid conveying device, a pressure conveying device, an outer spray nozzle, a first temperature control device, an industrial control device, a second thermocouple, a second heater and a second temperature control instrument, wherein the crucible is arranged in the case; the cover plate is fixedly arranged on the top of the case and seals the crucible; the liquid conveying device and the pressure conveying device are communicated with the crucible; the outer spray nozzle is fixedly arranged at the bottom of the case; the first temperature control device is used for controlling the temperature of liquid in the crucible; the second thermocouple and the second heater are arranged in positions, near an outlet, in the outer spray nozzle; the second temperature control instrument is connected with the second thermocouple and the second heater; a slide block is also arranged in the outer spray nozzle, and is connected with a first motor; the outlet can be opened or closed through the slide block being driven by the first motor, and the first motor is electrically connected with the industrial control device. The heater is used for heating, so that the concentrated liquid flow is enabled to be in a high-temperature state, and the spray nozzle outlet blockage due to liquid cooling condensation is avoided; an air film passage restrains the concentrated liquid flow, and prevents the concentrated liquid flow from contacting the spray nozzle, and the spray nozzle is further prevented from being blocked.

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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