Resin recovery device

Abstract

The invention discloses a resin recovery device. The device comprises a rack, a hydraulic mechanism, an air pressure mechanism, a pressing plate, a heating device and a recycling bin. An open extrusion cavity is formed in the upper end of the front side of the rack, a liquid outlet is formed in the lower end of the extrusion cavity, and the recycling bin is arranged below the liquid outlet and used for collecting resin liquid flowing out of the liquid outlet. The heating device is arranged on the periphery of the extrusion cavity and used for heating the extrusion cavity, and the pressing plate is arranged above the extrusion cavity. The resin recovery device is used for recycling supports generated by SLA photosensitive resin 3D printing parts and waste residues generated after the parts are broken, the recycling effect is achieved, production raw materials are saved, and the production cost is reduced.

Description

technical field [0001] The invention discloses a device for recovering resin, which belongs to the field of recovery equipment. Background technique [0002] SLA (StereoLithography Apparatus), this process uses photosensitive resin as raw material, and controls the ultraviolet laser beam through the computer to scan the layered section of the part processed by the slicing software point by point, so that the thin layer of resin in the scanned area is cured by photopolymerization. Forms a thin layer of the part. After one layer is cured, the workbench is moved down a distance of one layer thickness, so that a new layer of liquid resin is applied on the surface of the previously cured resin, and the scraper scrapes the liquid surface of the resin with high viscosity, and then proceeds The scanning process of the next layer, the newly cured layer is firmly bonded to the previous layer, and so on until the entire part is manufactured, and a three-dimensional solid prototype is ...

AI Technical Summary

Problems solved by technology

Since the entire part printing process is completed in the resin tank, and the part needs to be fixed on the workbench by means of printing support, it is inevitable that a thick layer of resin will be stained on the support and the surface of the part after printing. Resin, due to the high viscosity of the resin, it is extremely difficult for these resins attached to the surface to be recycled by gravity, and almost all of them will be wasted by us with the removal and disposal of supports

In addition, in the actual production printing process, it usually happens that the part layer is not firmly bonded between the layers or because of the lack of support connection with the worktable in the cross section of the first printing, the newly cured layer is pushed back and forth by the scraper. Deviate from the original position, so that the cured layer after all subsequent ultraviolet laser beam irradiation cannot be bonded to the previous layer, resulting in a large number of fragments of a single cross-sectional layer of the part, which increases the contact surface with the liquid resin in the resin tank, resulting in a large number of The waste of bad parts can usually reach 2 to 5 times the weight of the printed part itself

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