Three dimensions printing system and residual material recovery and nozzle cleaning device thereof

Abstract

The invention provides a three dimensions printing system and a residual material recovery and nozzle cleaning device thereof. The three dimensions printing system comprises a nozzle, a connection pipe and a material tank and the material tank is provided with a discharge valve. The residual material recovery and nozzle cleaning device comprises an air pump, a water pump, a collection tank and a controller. A first end of the connection pipe is connected to the nozzle and a second end of the connection pipe is communicated with the material tank by the discharge valve. The air pump is communicated with the nozzle. The water pump is communicated with the second end of the connection pipe. The controller is respectively connected to the nozzle, the discharge valve, the air pump and the water pump and controls operation of the devices. The residual material recovery and nozzle cleaning device utilizes an air inflation method to realize primary flushing of the nozzle and the connection pipe, returns the residual printing material back to the material tank by air flows thereby realizing printing material recovery and recycle, and has the advantages of simple and fast recovery method, time and labor saving, waste reduction and cost saving. The residual material recovery and nozzle cleaning device utilizes a water feeding method to realize secondary flushing of the nozzle and the connection pipe thereby avoiding deposition of a less amount of the residual printing material in the nozzle and the connection pipe after air-operated flushing.

Description

Technical field [0001] The invention relates to the technical field of three-dimensional printing, in particular to a three-dimensional printing system and a device for recovering leftover materials and cleaning nozzles. Background technique [0002] Three-dimensional printing is also called 3D printing (Three Dimensions Printing), which is a kind of rapid prototyping technology. It is a technology that builds objects based on digital model files, using bondable materials such as powdered metal or plastic, and printing them layer by layer. In the past, it was often used to make models in the fields of mold manufacturing, industrial design, etc. Now it is gradually being used in the direct manufacturing of some products, especially some high-value products (such as hip joints or teeth, or aircraft parts). Parts printed by this technology. [0003] In 3D printing, the material box storing the printing material and the nozzle used to eject the printing material are indispensable com...

AI Technical Summary

Problems solved by technology

Due to the high value of many printing materials, in the prior art, the remaining materials in the nozzles and connecting pipes are usually cleaned directly, which is difficult to recycle and causes waste

Even if there is a method to recycle the printing material, the operation steps are more complicated, time-consuming and labor-intensive, and even the nozzle and the connecting pipe cannot be fully cleaned due to the recycling of the printing material, resulting in less printing material residue

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