A hot melt material extrusion device

Abstract

The invention relates to a hot-melt material extrusion device, which includes a heating device, an extrusion head, an air conduit extension pipe, a flexible feeding conduit, a flexible gas conduit, a hollow connection device, a gas circulation device, A driving device, the driving device is provided with a gas circulation device, the gas circulation device is provided with a hollow connection device, the driving device is connected to the flexible feeding conduit, one end of the gas flexible conduit communicates with the hollow connection device, and the other end of the gas flexible conduit is provided with an air conduit The extension pipe and the air duct extension pipe are provided with a heating device, the upper end of the heating device is connected with the flexible feeding pipe, and the lower end of the heating device is connected with the extrusion head. The beneficial effects of the present invention are: reducing the mass of the moving part in the extrusion device, thereby increasing the moving speed; the gas circulation device generates air flow around the extrusion head through the conduit to cool the molten filaments extruded by the extrusion head .

Description

technical field [0001] The invention relates to a melt extrusion device, in particular to a hot melt material extrusion device. Background technique [0002] Rapid prototyping technology is an emerging advanced manufacturing technology in the late 1980s, and it is a prototype manufacturing technology based on the idea of ​​discrete accumulation. The outstanding advantages of rapid prototyping technology are reflected in: firstly, it is a digital manufacturing technology based entirely on digital drive, which realizes the manufacturing process directly with CAD prototype, without special tooling and fixtures; secondly, the forming process has nothing to do with the complexity of the parts, Parts of any complex shape can be manufactured. Rapid prototyping has a wide range of applications, especially in the new product development stage, the use of rapid prototyping technology can greatly shorten the product development cycle, greatly reduce product trial manufacturing costs, ...

AI Technical Summary

Problems solved by technology

[0006] The mass of the melt continuous extrusion device disclosed above is large, and its drive motor is heavy and poor in mobility. The mass of the entire extrusion device is greater by accumulating the transmission part and the heating part; the extrusion device limits the moving speed of the extrusion head on the one hand, that is, The speed of three-dimensional rapid prototyping; on the other hand, the mechanical strength requirements of the X and Y axes are relatively high, and a certain driving power is required to achieve the moving speed, which further increases the cost; at the same time, some molten hot-melt materials will produce peculiar smell, Long-term inhalation of this gas can affect health

Although it is possible to close the entire 3D printing molding space, add an exhaust fan and filter it, the cost is high, and a large amount of air circulation is not conducive to maintaining the temperature of the 3D molding cavity

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