Resin coating apparatus for light solidifying rapid forming technique

Abstract

The invention relates to a resin coating device which is used in light solidifying rapid prototyping technology. It includes stock solution groove and peristaltic pump which is interlinked with the stock solution groove and controlled by the computer. The peristaltic pump is interlinked with the spray head laid according to the point by the pipeline. Cylinder body and piston fitted tightly to the cylinder body and controlled by the computer are set right under the spray head. Kick plate, transducer connected to the kick plate, and supersonic generator controlled by the computer are set the position at which the up end of the piston and the opening of the cylinder body are in the same horizontal plane. The invention adopts the piston type worktable, saves resin; and it will not disturb the resin in the resin groove in the lifting process of the worktable, this can ensure the stability of the liquid surface and realize precision coating. The complement of the resin is adopted the peristaltic pump which can precisely control the flow quantity, complemented with fixed quantity by the spray head laid according to the point, then flattened the complemented resin by the supersonic coating kick plate. The thickness of the coating can reach 0.02 millimeter if The invention discloses adopted.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping, and in particular relates to a resin coating device used in a photocuring rapid prototyping process. Background technique [0002] Photocuring rapid prototyping is to use ultraviolet light to irradiate liquid photosensitive resin, and complete the production of three-dimensional parts by layer-by-layer superposition. After one layer of liquid resin is cured, in order to scan the next layer, a layer of resin must be coated on the upper surface of the cured layer. If the layer thickness of the coating is not uniform or the thickness cannot be precisely controlled, it will lead to the loss of part precision and even the failure of the manufacturing process. Especially when making tiny parts, the required layer thickness is very small, such as a few microns. Due to the limitation of material properties, the existing methods can no longer meet the requirements. At present, there are mainly...

AI Technical Summary

Problems solved by technology

It is difficult to accurately control the amount of resin adsorbed in the coating device and the amount of resin coated on the curing surface when the device moves, and it is completely dependent on the natural flow of the resin to achieve a smooth liquid level. When the thickness of the resin coating is required to be small, it is also difficult to achieve

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