3D printing pen capable of reducing surface temperature of pen point

Abstract

The 3D printing pen capable of reducing the surface temperature of the pen point comprises a metal heating head, a plastic support and a plastic shell front cover wrapping the metal heating head, the front portion of the plastic shell front cover is a discharging nozzle, and the front portion of the metal heating head is located in the discharging nozzle. The rear end of the metal heating head extends out of the plastic shell front cover and is connected with the front end of the plastic support, and a temperature resistance material is arranged between the inner wall of the plastic shell front cover and the outer wall of the front part of the metal heating head; according to the 3D printing pen capable of reducing the surface temperature of the pen point, the temperature rise of the pen point of the 3D printing pen is within the national standard management and control range, so that the pen point of the 3D printing pen is not swollen during use, and a 3D printing pen user is better protected.

Description

Technical Field

[0001] This utility model belongs to the field of 3D printing, specifically relating to a 3D printing pen that can reduce the surface temperature of the pen tip. Background Technology

[0002] As 3D printing technology matures, in addition to commercially available stereolithography machines and 3D printers, innovative 3D printing pens have been developed, breaking the limitations of writing and drawing on the two-dimensional space of paper. These pens can quickly transform any shape of design graphics from a 2D plane into a 3D solid object.

[0003] Chinese patent CN202021720174.2 discloses a novel 3D drawing pen. This novel 3D drawing pen includes a shell, within which a heating head, circuit board, battery, motor gearbox, feed tube, and USB interface are installed. The heating head is located on the front side of the shell, and the USB interface is located on the rear side. The circuit board, motor gearbox, and feed tube are all located behind the heating head, while the circuit board, battery, and motor gearbox are all located in front of the USB interface. The shell includes a body and a front cover, which are rotatably fastened to the body. The heating head is located inside the front cover. A protective plastic is fixed inside the front cover, with the front end of the protective plastic extending beyond the front end of the front cover. The front end of the heating head extends into the protective plastic but does not protrude beyond its front end.

[0004] This new type of 3D drawing pen reduces the space occupied by the motor and gearbox, and shrinks the diameter of the outer shell, making the 3D drawing pen more compact. However, there is no structure to prevent heat conduction between the heating head and the protective plastic. Due to the problem of excessively high temperature rise of the heating head, the protective plastic directly absorbs the heat of the heating head and releases the absorbed heat directly. This may cause the temperature rise of the 3D drawing pen tip to exceed the national standard control, making it easy to burn your hands during use.

[0005] Therefore, improvements are needed. Utility Model Content

[0006] The purpose of this invention is to provide a 3D printing pen that can reduce the surface temperature of the pen tip, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution used in this utility model is as follows:

[0008] A 3D printed pen that can reduce the surface temperature of the pen tip includes a metal heating head, a plastic support, and a plastic shell front cover that wraps around the metal heating head. The front part of the plastic shell front cover is a discharge nozzle, the front part of the metal heating head is located inside the discharge nozzle, the rear end of the metal heating head extends out of the plastic shell front cover and is connected to the front end of the plastic support, and a heat-insulating material is provided between the inner wall of the plastic shell front cover and the outer wall of the front part of the metal heating head.

[0009] Furthermore, the front of the metal heating head is provided with an anti-detachment structure to prevent the heat-insulating material from falling off.

[0010] Furthermore, the heat-insulating material is a sleeve covering the front of the metal heating head, and the anti-detachment structure is a recessed hanging groove or a raised hanging platform formed on the outer surface of the front of the metal heating head.

[0011] Furthermore, the recessed groove is an annular recessed groove, which is located on the outer side of the front part of the metal heating head.

[0012] Furthermore, the raised mounting platform is an annular boss, which is located on the outer side of the front part of the metal heating head.

[0013] Furthermore, the temperature-resistant material is made of Teflon.

[0014] Compared with the prior art, the main advantages of this utility model are: by setting a heat-insulating material between the inner wall of the plastic shell front cover and the outer wall of the front of the metal heating head, the heat-insulating material can reduce the surface temperature of the plastic shell front cover, so that the temperature rise of the 3D printing pen tip is within the national standard control range, making the 3D printing pen tip less hot to the touch and better protecting the 3D printing pen user. Attached Figure Description

[0015] Figure 1 A perspective view of one embodiment of the 3D printing pen of this utility model;

[0016] Figure 2 for Figure 1 A sectional view;

[0017] Figure 3 To remove Figure 1 A 3D view of the plastic shell front cover;

[0018] Figure 4 for Figure 3 A sectional view;

[0019] Figure 5 To drop the picture Figure 3 A three-dimensional diagram of the temperature-resistant material in the image;

[0020] Figure 6 for Figure 5 A sectional view;

[0021] Figure 7 This is a cross-sectional view of another embodiment of the 3D printing pen of this utility model.

[0022] Explanation of the reference numerals: 1. Metal heating head; 2. Plastic bracket; 3. Teflon tube; 4. Plastic shell front cover; 41. Conical part; 5. Temperature-insulating material; 6. Recessed hanging groove; 7. Raised hanging platform; 8. Annular groove. Detailed Implementation

[0023] To facilitate a better understanding of the purpose, structure, features, and effects of this utility model, the present utility model will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figure 1-6 As shown, the 3D printed pen that can reduce the surface temperature of the pen tip includes a metal heating head 1, a plastic support 2, a Teflon tube 3, and a plastic shell front cover 4 wrapped around the metal heating head 1. The front part of the plastic shell front cover 4 is a conical part 41, the front part of the metal heating head 1 is located inside the conical part 41, the rear part of the Teflon tube 3 is located inside the plastic support 2, the front part of the Teflon tube 3 is located inside the metal heating head 1, the rear end of the metal heating head 1 extends out of the plastic shell front cover 4 and is connected to the front end of the plastic support 2, and a heat-insulating material 5 is provided between the inner wall of the conical part 41 of the plastic shell front cover 4 and the outer wall of the front part of the metal heating head 1.

[0025] The front of the metal heating head 1 is provided with an anti-detachment structure to prevent the heat-insulating material 5 from falling off. The heat-insulating material 5 is a sleeve covering the front of the metal heating head 1. The anti-detachment structure is a recessed hanging groove 6 formed on the outer surface of the front of the metal heating head 1. The recessed hanging groove 6 is an annular recessed groove located on the outer side of the front of the metal heating head 1 and close to the rear end of the sleeve, and is completely covered by the sleeve. The heat-insulating material 5 is made of Teflon. When the metal heating head 1 heats up, the Teflon heat-insulating material 5 deforms due to the heat of the metal heating head 1 and fills the recessed hanging groove 6, forming a hook structure that hangs in the recessed hanging groove 6, making it difficult for the sleeve (i.e., the heat-insulating material 5) to fall off.

[0026] Compared with the prior art, the main advantages of this utility model are as follows: by providing a heat-insulating material 5 between the inner wall of the conical part 41 of the plastic shell front cover 4 and the outer wall of the front part of the metal heating head 1, the heat-insulating material 5 can reduce the surface temperature of the plastic shell front cover 4, so that the temperature rise of the 3D printing pen tip is within the national standard control range, making the 3D printing pen tip less hot to the touch when used, and better protecting the 3D printing pen user.

[0027] In other implementations, such as Figure 7As shown, the anti-detachment structure is a raised platform 7 formed on the outer front surface of the metal heating head 1. The raised platform 7 is an annular boss, and an annular groove 8 is located behind the annular boss. The annular boss is located on the outer front side of the metal heating head 1 and close to the rear end of the sleeve. The annular boss and the annular groove 8 are completely covered by the sleeve. When the metal heating head 1 heats up, the Teflon heat-insulating material 5 deforms behind the raised platform 7 due to the heat from the metal heating head 1, forming a hook structure that matches the annular groove 8 and hangs on the raised platform 7, making it difficult for the sleeve (i.e., the heat-insulating material 5) to fall off.

[0028] In other embodiments, the temperature-resistant material 5 is made of polyimide.

[0029] The present invention has been described above in conjunction with the preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A 3D printing pen capable of reducing the surface temperature of the pen tip, comprising a metal heating head, a plastic support, and a plastic shell front cover enclosing the metal heating head, wherein the front part of the plastic shell front cover is a discharge nozzle, the front part of the metal heating head is located inside the discharge nozzle, and the rear end of the metal heating head extends out of the plastic shell front cover and is connected to the front end of the plastic support, characterized in that: A heat-insulating material is provided between the inner wall of the plastic shell front cover and the outer wall of the front part of the metal heating head.

2. The 3D printing pen that can reduce the surface temperature of the pen tip according to claim 1, characterized in that: The front of the metal heating head is provided with an anti-detachment structure to prevent the heat-insulating material from falling off.

3. The 3D printing pen that can reduce the surface temperature of the pen tip according to claim 2, characterized in that: The heat-insulating material is a sleeve covering the front of the metal heating head, and the anti-detachment structure is a recessed hanging groove or a raised hanging platform formed on the outer surface of the front of the metal heating head.

4. The 3D printing pen that can reduce the surface temperature of the pen tip according to claim 3, characterized in that: The recessed groove is an annular recessed groove, located on the outer front part of the metal heating head.

5. The 3D printing pen that can reduce the surface temperature of the pen tip according to claim 3, characterized in that: The raised mounting platform is an annular boss, which is located on the outer side of the front part of the metal heating head.

6. The 3D printing pen capable of reducing the surface temperature of the pen tip according to any one of claims 1-5, characterized in that: The temperature-resistant material is made of Teflon.

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