Plastic extrusion device for 3D forming

Abstract

The invention discloses a plastic extrusion device for 3D forming. The plastic extrusion device comprises an input device, a melting conveying device, a buffer feeding device, an extrusion conveying device and an extrusion head. The device is reasonable and simple in structure, low in production cost, convenient to install and complete in function, the arranged input device can continuously convey a plastic belt into the circular cavity to abut against the outer surface of the conveying heat conduction wheel for heating and melting, meanwhile, the conveying heat conduction wheel rotates in cooperation, the requirement for continuous heating and melting of the plastic belt is met, and the production efficiency is improved. In addition, the molten plastic can be continuously conveyed into the buffer cavity through the conveying channel to be buffered and stored, so that the feeding stability and reliability at different printing speeds are met; according to the extrusion head, it can be ensured that the two valve elements can abut against each other under the action of the second spring during non-extrusion, and therefore it is avoided that molten plastic leaks out, and the quality of products is affected.

Description

technical field [0001] The invention relates to the technical field of 3D molding equipment, in particular to a plastic extrusion device for 3D molding. Background technique [0002] 3D printing is also known as rapid prototyping, that is, putting data and raw materials into a 3D printer, and printing the product layer by layer through computer program control to finally form a finished product. 3D printing has become a trend and has begun to be widely used in the design field, especially in industrial design, digital product mold opening, etc. It can complete the printing of a mold within a few hours, saving a lot of time from product development to market launch. At present, most of the molding materials used in 3D printers are plastics. The plastics need to be melted first, and then solidified and formed on the bottom plate after being ejected through the nozzle. However, the melting efficiency of the plastic input by the existing 3D molding plastic extrusion device is re...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a plastic extrusion device for 3D molding in order to solve the above problems, which solves the problem that the melting efficiency of the plastic input by the existing 3D plastic extrusion device is relatively low and uneven, which affects the The supply of plastic extrusion, in addition, the plastic extrusion device is also prone to material leakage, which affects the quality of the product

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