阅读说明：本技术 一种新型3d打印笔保温防烫喷嘴 (Novel 3D print pen keeps warm and prevents scalding nozzle ) 是由 苏力人 许雷 乔成雪 陈庆武 张永升 于 2019-11-14 设计创作，主要内容包括：一种新型3D打印笔保温防烫喷嘴,属于3D打印技术领域。本发明的陶瓷喷头外侧均匀绕有加热电阻丝,加热电阻丝的表面覆有热敏电阻,热敏电阻和加热电阻丝分别引出接线连到插接端子头上；陶瓷喷头通过尾部的长管与连接件相连,陶瓷喷头的前端套有隔热垫圈；陶瓷喷头的外部套有内壳,内壳的外部套有外壳。本发明结构简单,内外壳的设计使内壳保温得同时减小热量传递到外壳,陶瓷喷头前后分别安装有四氟管和隔热垫圈,能避免热量的快速传递,从而达到保温防烫的目的,整个结构相对独立,外壳采用卡爪结构形式紧固连接,组装简单、拆卸更换方便。(A novel heat-preservation and scald-prevention nozzle of a 3D printing pen belongs to the technical field of 3D printing. Heating resistance wires are uniformly wound on the outer side of the ceramic sprayer, thermistors are covered on the surfaces of the heating resistance wires, and the thermistors and the heating resistance wires are respectively led out to be connected to plug terminals; the ceramic nozzle is connected with the connecting piece through a long pipe at the tail part, and the front end of the ceramic nozzle is sleeved with a heat insulation gasket; the outer sleeve of pottery shower nozzle has the inner shell, and the outside cover of inner shell has the shell. The ceramic sprayer is simple in structure, the inner shell is insulated by the design of the inner shell and the outer shell, heat is reduced from being transferred to the outer shell, the front and the back of the ceramic sprayer are respectively provided with the tetrafluoride pipe and the heat insulation gaskets, the heat can be prevented from being rapidly transferred, the heat insulation and scald prevention purposes are achieved, the whole structure is relatively independent, the outer shell is fastened and connected in a clamping jaw structure mode, the assembly is simple, and the disassembly and the replacement are convenient.)

1. The utility model provides a novel 3D print pen prevents scalding nozzle that keeps warm, includes ceramic shower nozzle (3), its characterized in that: heating resistance wires (6) are uniformly wound on the outer side of the ceramic nozzle (3), a thermistor (5) is covered on the surface of the heating resistance wires (6), and the thermistor (5) and the heating resistance wires (6) are respectively led out to be connected to plug-in terminal heads (7); the ceramic nozzle (3) is connected with a connecting piece (9) through a long pipe (8) at the tail part, and the front end of the ceramic nozzle (3) is sleeved with a heat insulation gasket (4); the ceramic nozzle is characterized in that an inner shell (2) is sleeved outside the ceramic nozzle (5), and an outer shell (1) is sleeved outside the inner shell (2).

2. The novel heat-preservation and anti-scald nozzle for the 3D printing pen as claimed in claim 1, is characterized in that: a gap of 1-2mm is reserved between the outer shell (1) and the inner shell (2).

3. The novel heat-preservation and anti-scald nozzle for the 3D printing pen as claimed in claim 2, characterized in that: a plurality of strip-shaped heat dissipation holes are uniformly distributed on the outer contour of the shell (1).

4. The novel heat-preservation and anti-scald nozzle for the 3D printing pen as claimed in claim 1, is characterized in that: the heat insulation gasket (4) is made of a Teflon material.

5. The novel heat-preservation and anti-scald nozzle for the 3D printing pen as claimed in claim 1, is characterized in that: the thermistor (5) is fixed on the surface of the heating resistance wire (6) by a high-temperature resistant adhesive tape.

6. The novel 3D printing pen heat-preservation and burn-proof nozzle as claimed in claim 1, wherein a clamping structure is adopted between the shell (1) and the connecting piece (9).

Technical Field

The invention belongs to the technical field of 3D printing, and particularly relates to a novel heat-preservation scald-proof nozzle of a 3D printing pen.

Background

3D print pen is free scribble for hand-held type 3D and makes drawing pen, and the consumptive material that needs for drawing because of 3D print pen scribbles is plastics wire rods such as solid PLA, ABS, and the wire rod needs heat to 180 ℃ and melts, then extrusion moulding makes the drawing, so the temperature can concentrate on the nib, to handheld drawing, forms safety problems such as scald easily. Therefore, the invention of the novel heat-preservation scald-proof nozzle of the 3D printing pen is very necessary.

Disclosure of Invention

The invention provides a novel heat-preservation scald-proof nozzle of a 3D printing pen, and aims to solve the problems that the existing 3D printing pen is easy to scald and poor in safety.

In order to achieve the technical purpose and achieve the technical effect, the invention is realized by the following technical scheme: a novel heat-preservation and scald-proof nozzle for a 3D printing pen comprises a ceramic sprayer, wherein heating resistance wires are uniformly wound on the outer side of the ceramic sprayer, thermistors are covered on the surfaces of the heating resistance wires, and the thermistors and the heating resistance wires are respectively led out to be connected to plug-in terminals; the ceramic nozzle is connected with the connecting piece through a long pipe at the tail part, and the front end of the ceramic nozzle is sleeved with a heat insulation gasket; the ceramic sprayer is characterized in that an inner shell is sleeved outside the ceramic sprayer, and an outer shell is sleeved outside the inner shell.

Preferably, a gap of 1-2mm is reserved between the outer shell and the inner shell, and the double-layer nozzle has an anti-scald function.

Preferably, a plurality of strip-shaped heat dissipation holes are uniformly distributed in the outer contour of the shell, so that the shell can dissipate heat better.

Preferably, the long pipe is a tetrafluoride pipe; the heat conduction of the tetrafluoride tube is slow.

Preferably, the heat insulating gasket of the present invention is made of teflon.

Preferably, the thermistor of the present invention is fixed to the surface of the heating resistance wire by a high temperature resistant tape.

Preferably, the shell and the connecting piece of the invention adopt a clamping structure.

The invention has the advantages that the gap is arranged between the inner shell and the outer shell, and the heat of the inner shell is preserved while the heat transfer to the outer shell is reduced; the front and the back of the ceramic nozzle are respectively provided with the tetrafluoride pipe and the heat insulation gasket, so that the rapid heat transfer can be avoided, and the purposes of heat preservation and scald prevention are achieved; the invention has relatively independent structure, the shell adopts a clamping structure for fastening connection, the assembly is simple, and the disassembly and the replacement are convenient.

Drawings

Fig. 1 is an exploded view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the overall structure of the present invention.

In the figure: 1-outer shell, 2-inner shell, 3-ceramic nozzle, 4-heat-insulating washer, 5-thermistor, 6-heating resistance wire, 7-plug terminal, 8-long tube, 9-connecting piece.

Detailed Description

The invention is further described below with reference to the accompanying drawings: as shown in fig. 1 and 2, the novel heat-preservation and anti-scald nozzle for the 3D printing pen comprises an outer shell 1, an inner shell 2, a ceramic spray head 3, a heat-insulation washer 4, a thermistor 5, a heating resistance wire 6, a plug-in terminal head 7, a long tube 8 and a connecting piece 9; the heating resistance wire 6 evenly winds on the ceramic nozzle 3, the thermistor 5 is fixed on the surface of the heating resistance wire 6 by utilizing a high-temperature resistant adhesive tape, the thermistor 5 and the heating resistance wire 6 are respectively led out to be connected to the plug-in terminal head 7, the front end of the ceramic nozzle 3 is fixedly connected with the heat insulation gasket 4, the ceramic nozzle 3 is connected with the connecting piece 9 through the long tube 8 at the tail part, the inner shell 2 and the outer shell 1 are sequentially sleeved on the outer surface of the ceramic nozzle 3, and a clamping type structure is adopted between the outer shell 1 and the connecting piece 9.

Wherein a gap of 1-2mm is left between the outer shell 1 and the inner shell 2; a plurality of strip-shaped heat dissipation holes are uniformly distributed on the outer contour of the shell 1; the heat insulation gasket 4 is made of a teflon material; the long pipe 8 is a tetrafluoride pipe; a plurality of claws at the upper end of the shell 1 are clamped in the inner hole of the connecting piece 9.