Cutting knife for fused deposition molding part

Abstract

The cutting knife comprises a shell, a power source assembly and a heating assembly, and is characterized in that the shell comprises a left shell body, a right shell body, an end cover, cooling fins, a universal hose and a heat insulation silicon rubber sleeve, and the power source assembly comprises a power source, a pressing switch and a charging interface; the heating assembly comprises a circuit board, a knob switch, heat insulation cotton, a heating pipe, a temperature sensor and a tool bit. A push switch is arranged at the tail end of the left shell and is a main power switch of the cutting knife; the universal hose can be bent to extend into the cavity for cutting; the replaceable tool bit can be attached to the shape of a cutting face to conduct high-attaching-degree cutting, the cutting quality is high, the speed is high, and operation is safe, convenient and fast.

Description

technical field [0001] The invention relates to the field of plastic cutting equipment, in particular to a cutting knife used for fusion accumulation molded parts. Background technique [0002] Fusion accumulation molding technology is to heat and melt filamentous hot-melt materials. Under the control of the computer, according to the cross-sectional profile information, the molding is completed layer by layer. There are many types of molding materials, high strength and high precision of the moldings. It is suitable for molding small plastic parts, especially cavity-like plastic parts. At present, most of the fused deposition molding plastic parts have low surface roughness and problems such as wire drawing. At the same time, there are support residues that are difficult to peel off on the inner and outer surfaces of the cavity. [0003] At present, the cutting device for plastic parts is relatively large, and cannot enter the cavity of small plastic parts to cut excess ma...

AI Technical Summary

Problems solved by technology

At present, most of the plastic parts of fused deposition molding have low surface roughness and problems such as wire drawing, and at the same time, there are support residues that are difficult to peel off on the inner and outer surfaces of the cavity.

[0003] At present, the cutting device for plastic parts is relatively large, and cannot enter the cavity of small plastic parts to cut excess materials; at the same time, the knife surface is mostly linear, and it is impossible to perform fine and non-linear cutting on plastic parts on the surface

Usually, in 3D printing, for the plastic parts formed by fusion deposition, after the machine is formed, it is necessary to manually grind and cut the excess plastic. Ordinary grinding and cutting will cause problems such as whitening, roughness and irregular shape of the cutting surface, and the cutting The process relies entirely on manpower to generate shear stress, thereby destroying the plastic structure to achieve the cutting effect. The operation is time-consuming and laborious, and at the same time has a certain degree of danger.

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