Three-dimensional (3D) printing nozzle for preventing pipe expansion blockage

A 3D printing and nozzle technology, applied in the field of 3D printing nozzles, can solve problems such as blockage of expansion tubes, and achieve the effects of good lubricity, elimination of expansion tubes or even blockages, and low thermal conductivity.

Inactive Publication Date: 2014-09-03
句容利威尔电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an anti-expansion tube blocking the 3D printing nozzle to solve the problem of the expansion tube clogging in the through hole before the consumables are introduced into the nozzle

Method used

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  • Three-dimensional (3D) printing nozzle for preventing pipe expansion blockage
  • Three-dimensional (3D) printing nozzle for preventing pipe expansion blockage

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: as figure 1 and figure 2 As shown, the anti-expansion tube blockage 3D printing nozzle of the present invention includes a nozzle 1 and a heating device 2 surrounding the outer wall of the nozzle 1, and also includes a plastic introduction tube 4, and the through hole of the plastic introduction tube 4 is formed by docking with the through hole of the nozzle 1 Consumable delivery cavity. Wherein the heating device 2 is a heating wire, and the plastic introduction pipe 4 is a polytetrafluoroethylene pipe.

Embodiment 2

[0018] Embodiment 2: as figure 1 and figure 2 As shown, the anti-expansion tube blockage 3D printing nozzle of the present invention includes a nozzle 1 and a heating device 2 surrounding the outer wall of the nozzle 1, and also includes a plastic introduction tube 4, and the through hole of the plastic introduction tube 4 is formed by docking with the through hole of the nozzle 1 Consumable delivery cavity. Wherein the heating device 2 is a metal film resistor formed by etching, and the plastic introduction tube 4 is a nylon tube.

Embodiment 3

[0019] Embodiment 3: as figure 1 and figure 2 As shown, the anti-expansion tube blockage 3D printing nozzle of the present invention includes a nozzle 1 and a heating device 2 surrounding the outer wall of the nozzle 1, and also includes a plastic introduction tube 4, and the through hole of the plastic introduction tube 4 is formed by docking with the through hole of the nozzle 1 Consumable delivery cavity. Wherein the heating device 2 is an annular heating device made of PTC ceramics, and the plastic introduction pipe 4 is an LCP pipe or a PPS pipe.

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PUM

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Abstract

The invention discloses a three-dimensional (3D) printing nozzle for preventing pipe expansion blockage. The 3D printing nozzle comprises a nozzle and a heating device which is wound around the outer wall of the nozzle, and also comprises a high-temperature-resistant plastic lead-in pipe of which the melting point is higher than melting points of consumables, wherein a through hole of the plastic lead-in pipe is butted with a through hole of the nozzle to form a consumable conveying cavity; the plastic lead-in pipe is preferably a polytetrafluoroethylene pipe. The consumable is led in through the plastic lead-in pipe and enters the heated nozzle to be molten into jelly. Although the consumable is heated to slightly expand before entering the through hole in front of the nozzle due to the heat conduction effect, a phenomenon of the pipe expansion even blockage caused by heat conduction of heating and cooling devices in the process of allowing the consumable to enter the through hole in front of the nozzle can be well eliminated due to three factors that the plastic lead-in pipe is low in heat conductivity coefficient, the lubricating property of the lead-in pipe is high and micro deformation is generated after the pipe is heated. Therefore, the 3D printing nozzle can be compatible with consumables of various materials, and the selection range is widened.

Description

technical field [0001] The invention relates to a 3D printing component, in particular to a 3D printing nozzle. Background technique [0002] At present, the consumables of the existing 3D printing nozzles are introduced by stainless steel through holes. For example, there is a stainless steel through hole for introducing consumables in the hollow of the fixing seat. After the 3D printing consumables are introduced through the stainless steel through holes, they enter the heated nozzle and melt into glue. shape. In order to achieve a good heat dissipation effect, generally 3D printing equipment is equipped with a fan device. Later, with the development of technology, in order to reduce the weight of the pen, reduce the size of the pen, and eliminate the noise caused by the fan, 3D printing equipment gradually adopts integrated The heat dissipation method of the heat sink replaces the heat dissipation method of the fan. Generally, the heat sink is arranged around the heating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00A23G1/04A23G3/02
Inventor 魏宏辉魏天浩魏妗羽
Owner 句容利威尔电器有限公司
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