3D printer head with temperature truncation function

Abstract

The invention discloses a 3D printer head with a temperature truncation function. A first hole is formed in a bottom face of a heat dissipation shell, and a second hole is formed in a top face of the heat dissipation shell. A wire feeding guide pipe is arranged in the first hole of the heat dissipation shell, and the two ends of the wire feeding guide pipe are a feeding end and a discharging end. The second hole of the heat dissipation shell communicates with the feeding end and the discharging end of the wire feeding guide pipe to form a wire feeding channel, the part, located outside the heat dissipation shell, of the wire feeding guide pipe is a heating area, the part, located inside the heat dissipation shell, of the wire feeding guide pipe is a heat dissipation area, and temperature truncation through holes which are formed in the radial direction are formed in the heat dissipation area of the wire feeding guide pipe. A heating block is fixedly arranged on the heating area of the wire feeding guide pipe. The feeding end of a printing nozzle is connected with the discharging end of the wire feeding guide pipe. The 3D printer head has the temperature truncation function, conduction of heat to the upper end of the wire feeding guide pipe is reduced, and accordingly the downward extruding resistance of consumable materials is reduced, and the 3D printing precision and the printing efficiency are improved.

Description

Technical field [0001] The invention relates to the field of printers, in particular to a 3D printer head with a temperature cutoff function. Background technique [0002] The consumables used by the 3D printer are plastic filaments, which are squeezed into the heating nozzle through the extruder. The extruder and the nozzle are connected by a tube to ensure that the plastic filaments will not bend and all enter the nozzle, and at the same time play a role of heat insulation. Prevent the heat of the heating nozzle from being conducted to the extruder, causing the consumables to soften and unable to be extruded [0003] Existing ducts generally use a PTFE round tube as an inner tube, and a PEEK or aluminum shell as an external support. At the same time, a fan is used to cool the PEEK or aluminum shell to dissipate the heat conducted by the heating nozzle in time. The existing device has poor heat dissipation effect, and the temperature of the duct drops uniformly from bottom to top...

AI Technical Summary

Problems solved by technology

The heat dissipation effect of the existing device is not good, and the temperature of the conduit decreases uniformly from bottom to top (such as image 3 ), unable to quickly cut off the temperature conduction, causing a long period of consumables to soften, increasing the resistance of consumables to extrude downwards, easily reducing the accuracy of 3D printing, and causing plugging

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