CN215970118U

CN215970118U - 3D print pen of interchangeable nib

Info

Publication number: CN215970118U
Application number: CN202121560996.3U
Authority: CN
Inventors: 杨沫; 刘德政; 李炎; 尚练达
Original assignee: Hubei Sibo Chuangke 3d Technology Co ltd
Current assignee: Hubei Sibo Chuangke 3d Technology Co ltd
Priority date: 2021-07-09
Filing date: 2021-07-09
Publication date: 2022-03-08
Anticipated expiration: 2031-07-09

Abstract

The utility model discloses a 3D printing pen with a replaceable pen point, which comprises a shell, a pen point and a pen cap, wherein the pen point is detachably arranged at the front end of the shell through the pen cap; the casing is inside to be inlayed and to be equipped with heating device, heating device includes heating head and heating pipe, the heating pipe outer wall is equipped with the heater strip, the heating pipe is installed on the heating head, and the discharge gate and the nib butt of heating pipe. According to the utility model, the round table is arranged in the pen cap, and the pen head is fixed at the discharge port of the heating pipe through the threaded connection of the pen cap and the front end of the shell, so that the disassembling and assembling processes of the pen head are simplified, and the replacement of the pen head is more convenient; by replacing the pen points with different shapes, the spinning requirements of different shapes during 3D drawing can be met.

Description

3D print pen of interchangeable nib

Technical Field

The utility model belongs to the technical field of 3D printing, and particularly relates to a 3D printing pen with a replaceable pen point.

Background

At present, acrylonitrile-butadiene-styrene (ABS) filaments or polylactic acid (PLA) filaments are mostly adopted by 3D printing pens as printing materials. The softening temperature of the ABS filament is higher than 200 ℃, and the softening temperature of the PLA filament is close to 200 ℃. When the softened printing consumables are extruded from the discharge hole of the nozzle, the nozzle with better heat dissipation performance can be heated to higher temperature by the softened printing consumables.

The nib of 3D printing pen stretches out from the shell mostly, and the discharge gate on the nib is extruded and is hardened on print media from being convenient for like this to the printing material, and along with the application of 3D printing pen is more and more extensive, has had clear and definite requirement to the specific shape of the material that the nib was spit out thereupon, is convenient for like this satisfy the demand of handling special surface in drawing three-dimensional works. Most nibs are the integration in the existing market, generally adopt couple formula structure and body of a brush to be connected, appear easily because putty or some other reasons make the nib be difficult for dismantling and fragile, so, need urgently need to implement to improve to original round mouth single coating shape and original difficult nib of dismantling.

Chinese patent with publication number CN204773647U discloses a 3D printing pen with replaceable pen point, which comprises a printing pen point installed at the front end of a printing pen shell through threaded connection, wherein a connector socket is installed inside the printing pen shell, a connector matched with the connector socket is arranged at the tail of the printing pen point, a nozzle penetrates out from the inside to the top of the printing pen point, and the tail of the nozzle is connected with a feeding pipe through the connector. The utility model solves the problem that the pen point of the original 3D printing pen is difficult to disassemble and replace, and simultaneously meets the requirements of different spinning shapes during 3D drawing. The utility model enables a user to simply and quickly replace the pen points with multiple functions on the same 3D printing pen at any time, and provides more possibilities and flexibility for 3D creation activities. If the nib appears damaging and the problem of jam, the user also can be light realizes the maintenance replacement work, has optimized the structural design of product. Although this patent has improved the structure of nib, owing to set up connector and connector socket, frequently change the in-process of nib, lead to connector and socket to damage easily, life is not long.

Disclosure of Invention

The utility model aims to provide a 3D printing pen with a replaceable pen point, aiming at the problems in the prior art.

In order to achieve the purpose, the utility model adopts the technical scheme that:

A3D printing pen with a replaceable pen point comprises a shell, a pen point and a pen cap, wherein the pen point is detachably mounted at the front end of the shell through the pen cap; the casing is inside to be inlayed and to be equipped with heating device, heating device includes heating head and heating pipe, the heating pipe outer wall is equipped with the heater strip, the heating pipe is installed on the heating head, and the discharge gate and the nib butt of heating pipe.

Preferably, the outside of heating pipe is equipped with prevents scalding the shell, can reduce the heating pipe and transmit the heat of casing, reduces the temperature of casing, causes the risk of scald when avoiding the user to use.

Preferably, the housing is cylindrical, aesthetically pleasing and more convenient for a user to grasp.

Specifically, the front end of casing is equipped with the external screw thread, the inner wall of pen cap be equipped with the internal thread that the external screw thread matches, pen cap and casing front end pass through helicitic texture and can dismantle the connection. The pen cap can be more conveniently detached and installed through threaded connection, so that the pen point can be conveniently replaced.

Preferably, the pen point comprises a mounting ring and a conical nozzle, a circular truncated cone is arranged inside the pen cap, a through conical hole is formed in the middle of the circular truncated cone, and the conical degree of the inner wall of the conical hole is matched with the conical degree of the outer wall of the nozzle; the outer diameter of the mounting ring is larger than the maximum outer diameter of the tapered hole; one end of the nozzle penetrates through the conical hole, and the other end of the nozzle is abutted to a discharge hole of the heating pipe. When the pen point is installed, the pen point is directly placed in the pen cap, the nozzle is inserted into the conical hole, and the installation ring is placed on the end face of the circular truncated cone; and then the pen cap is in threaded connection with the front end of the shell, so that the pen point can be installed.

Optionally, the nib includes round thick nib, round thin nib and flat wide nib, through changing the nib of different shapes, can satisfy the laying head demand of different shapes during the 3D drawing.

Compared with the prior art, the utility model has the beneficial effects that: (1) according to the utility model, the round table is arranged in the pen cap, and the pen head is fixed at the discharge port of the heating pipe through the threaded connection of the pen cap and the front end of the shell, so that the disassembling and assembling processes of the pen head are simplified, and the replacement of the pen head is more convenient; (2) according to the utility model, the anti-scald shell is arranged outside the heating pipe, so that the temperature of the shell is further reduced, the risk of scalding when a user uses the printing pen is reduced, and the safety coefficient of the 3D printing pen is improved.

Drawings

FIG. 1 is an exploded view of a 3D printing pen with a replaceable pen point according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an internal structure of a 3D printing pen with a replaceable pen point according to an embodiment of the present invention;

FIG. 3 is a schematic external view of a 3D printing pen with a replaceable pen point according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of an internal structure of a pen cap according to an embodiment of the present invention;

in the figure: 1. a housing; 2. a heating head; 3. heating a tube; 4. heating wires; 5. an anti-scald housing; 6. an external thread; 7. an internal thread; 8. a mounting ring; 9. a nozzle; 10. a circular truncated cone; 11. a tapered hole; 12. a connecting ring; 13. a protective cover; 14. a round thick pen point; 15. a round thin pen point; 16. a flat and wide pen point; 17. a limit ring.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, the present embodiment provides a 3D printing pen with replaceable pen point, which includes a cylindrical housing 1, a pen point and a pen cap, wherein the pen point is detachably mounted at the front end of the housing 1 through the pen cap; the casing 1 is inside to be inlayed and to be equipped with heating device, heating device includes heating head 2 and

heating pipe

3, 3 outer walls of heating pipe are equipped with heater strip 4, heating pipe 3 is installed on heating head 2, and the discharge gate and the nib butt of heating pipe 3. The rear end of the shell 1 is provided with a limiting ring 17 which is used for fixing the heating device in the shell 1 in cooperation with a pen cap.

Preferably, the heating pipe 3 is provided with the anti-scalding shell 5 outside, so that the heat transmitted to the shell 1 by the heating pipe 3 can be reduced, the temperature of the shell 1 is reduced, and the risk of scalding caused by a user in use is avoided.

Further, the inner wall of the anti-scalding shell 5 is coated with a high-temperature-resistant heat-insulating coating, so that the temperature of the heating pipe 3 can be further isolated, the temperature of the shell 1 is further reduced, and the safety of a user in the using process is greatly improved.

Specifically, the front end of casing 1 is equipped with external screw thread 6, the inner wall of pen cap be equipped with internal thread 7 that external screw thread 6 matches, pen cap and casing 1 front end pass through helicitic texture and can dismantle the connection. The pen cap can be more conveniently detached and installed through threaded connection, so that the pen point can be conveniently replaced.

Preferably, the pen point comprises a mounting ring 8 and a conical nozzle 9, a circular truncated cone 10 is arranged inside the pen cap, a through conical hole 11 is formed in the middle of the circular truncated cone 10, and the conical degree of the inner wall of the conical hole 11 is matched with the conical degree of the outer wall of the nozzle 9; the outer diameter of the mounting ring 8 is larger than the maximum outer diameter of the tapered hole 11; one end of the nozzle 9 penetrates through the tapered hole 11, and the other end of the nozzle is abutted to a discharge hole of the heating pipe 3. When the pen point is installed, the pen point is directly placed in the pen cap, the nozzle 9 is inserted into the tapered hole 11, and the installation ring 8 is placed on the end face of the circular truncated cone 10; and then the pen cap is screwed with the front end of the shell 1, so that the installation of the pen point can be realized.

Specifically, in this embodiment, the pen cap includes a connection ring 12 and a protection cover 13, and the protection cover 13 is a hemisphere shape and is used for protecting the pen point and preventing a user from being scalded; the inner wall of the connecting ring 12 is provided with an internal thread 7; the circular truncated cone 10 is arranged in the protective cover 13.

Optionally, the pen points comprise a round thick pen point 14, a round thin pen point 15 and a flat wide pen point 16, and the requirement of different shapes for spinning during 3D painting can be met by replacing the pen points with different shapes.

In the use process of the 3D printing pen, when the pen point needs to be replaced, the pen cap is unscrewed from the shell 1, and then the pen point is taken out of the pen cap; then a new pen point is put into the pen cap, the nozzle 9 of the pen point is inserted into the conical hole 11 of the pen cap, and then the pen cap is screwed on the shell 1, and the inlet of the nozzle 9 is just abutted against the discharge hole of the heating pipe 3. The 3D printing pen of this embodiment is simple in structure, low cost, convenient operation, change nib easily.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The 3D printing pen with the replaceable pen point is characterized by comprising a shell, a pen point and a pen cap, wherein the pen point is detachably mounted at the front end of the shell through the pen cap; a heating device is embedded in the shell and comprises a heating head and a heating pipe, a heating wire is arranged on the outer wall of the heating pipe, the heating pipe is installed on the heating head, and a discharge port of the heating pipe is abutted to the pen point; the pen point comprises a mounting ring and a conical nozzle, a circular truncated cone is arranged in the pen cap, a through conical hole is formed in the middle of the circular truncated cone, and the conical degree of the inner wall of the conical hole is matched with the conical degree of the outer wall of the nozzle; the outer diameter of the mounting ring is larger than the maximum outer diameter of the tapered hole; one end of the nozzle penetrates through the conical hole, and the other end of the nozzle is abutted to a discharge hole of the heating pipe.

2. The 3D printing pen with the replaceable pen point according to claim 1, wherein an anti-burn shell is arranged outside the heating tube.

3. The 3D printing pen with the replaceable pen point as claimed in claim 1, wherein the housing is cylindrical.

4. The 3D printing pen with the replaceable pen point according to claim 1, wherein the front end of the shell is provided with external threads, the inner wall of the pen cap is provided with internal threads matched with the external threads, and the pen cap is detachably connected with the front end of the shell through a threaded structure.

5. The 3D printing pen with the replaceable pen point as claimed in claim 1, wherein the pen point comprises a round thick pen point, a round thin pen point and a flat wide pen point.