Liquid raw material generation device used for three-dimensional printing and control method of liquid raw material generation device

Abstract

The invention discloses a liquid raw material generation device used for three-dimensional printing and a control method of the liquid raw material generation device. The device is mainly composed of a heating unit used for generating liquid raw materials, a first opening and closing device which is used for controlling internal space of the heating unit to communicate with the external atmosphere or a negative-pressure device, a second opening and closing device used for controlling solid raw materials to enter the internal space of the heating unit, an air pressure sensing device, a liquid level sensing circuit and a temperature sensing circuit. The device has the beneficial effects that the problem that liquid raw materials of an extrusion head leak from a solid raw material inlet in the current FDM three-dimensional printing technology is solved; continuous solid raw material supply in the three-dimensional printing process is achieved, and printing of large parts is facilitated; liquid drops can be generated, and continuous liquid raw material flow can also be generated; liquid raw material fluid can be flexibly controlled; real-time monitoring on parameters such the size and the temperature of the liquid raw materials in a heating cavity can be achieved; and high feasibility and practicability are achieved, and the application range is wide. The liquid raw material generation device and the control method have substantive progress.

Description

technical field [0001] The invention relates to a liquid raw material generating technology in three-dimensional printing technology, in particular to a liquid raw material generating device for three-dimensional printing and a control method thereof, belonging to the technical field of additive manufacturing. Background technique [0002] 3D printing technology first originated in the United States at the end of the 19th century, and was perfected and commercialized in Japan and the United States until the 1970s and 1980s. Common mainstream 3D printing technologies, such as stereolithography (StereoLithography Apparatus, SLA), fused deposition manufacturing (Fused Deposition Modeling, FDM), selective laser sintering (Selecting Laser Sintering, SLS), three-dimensional powder bonding (Three DimensionalPrinting and Gluing, 3DP), was commercialized in the United States in the 1980s and 1990s. In technologies that realize 3D printing by stacking molten raw materials, such as co...

AI Technical Summary

Problems solved by technology

These methods of producing metal droplets all produce metal droplets by applying pressure and utilizing the characteristics of the fluid, and can also produce continuous liquid metal flow, but cannot continuously add solid raw materials during the working process, which will bring problems to some printing situations. Inconvenient, such as printing large metal parts; and there are difficulties in monitoring the liquid level of liquid metal in the micro furnace / crucible

Images