A hot end protection device for a 3D printer

Abstract

The utility model provides a kind of 3D printer's spray head hot end protection device, it is related to 3D printing technical field, comprising: protective outer cover;The protective outer cover is sleeved in 3D printing spray head outside, and two movable clamping columns are connected in protective outer cover inside, and movable clamping column inner end is contacted with 3D printing spray head;The movable sleeve is sleeved in the outside of the protective outer cover, and two bolts are connected in movable sleeve bottom, and bolt is connected with movable clamping column, and nut is threadedly connected in bolt end portion;Reset spring is sleeved in the outside of the protective outer cover.The utility model when protective outer cover is sleeved in 3D printing spray head outside, by protective outer cover, 3D printing spray head protection effect is played, direct touch the body of 3D printing spray head is avoided, and high temperature scald accident occurs;Movable sleeve moves downward under reset spring thrust, and movable sleeve drives two movable clamping columns to move synchronously inward by bolt, so that movable clamping column inner end is closely contacted with 3D printing spray head, and clamping fixed effect is played, and installation is more simple and time-saving.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a hot end protection device for the nozzle of a 3D printer. Background Technology

[0002] 3D printing technology, also known as additive manufacturing technology, is a technology that uses digital model files as a basis and employs powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. The hot end of the nozzle of a 3D printer needs to heat the printing material to a high temperature during operation, usually between 180℃ and 300℃, or even higher. Such a high temperature makes the hot end of the nozzle a potential source of danger.

[0003] In current practical applications of 3D printers, their printheads generally lack effective protection mechanisms. If operators accidentally touch the hot end of the printhead during daily printing operations, model removal, or equipment debugging, the excessively high temperature can instantly cause severe burns to the contact area, greatly threatening the personal safety of the operators. This is because the hot end of the printhead needs to heat the printing material to a high temperature during operation. Utility Model Content

[0004] This utility model relates to a hot-end protection device for the nozzle of a 3D printer, which solves the problem that the nozzles used in existing 3D printers lack effective protection in actual applications, and that if operators accidentally come into contact with the hot end of the nozzle, the excessively high temperature of the hot end can easily cause burns.

[0005] In a first aspect, this utility model provides a hot-end protection device for the nozzle of a 3D printer, specifically comprising: a protective jacket, movable clamping posts, a movable sliding sleeve, bolts, nuts, and a return spring; the protective jacket is fitted over the 3D printing nozzle, and two movable clamping posts are connected inside the protective jacket, with the inner ends of the movable clamping posts contacting the 3D printing nozzle; when the protective jacket is fitted over the 3D printing nozzle, it provides protection for the 3D printing nozzle, preventing direct contact with the nozzle body and thus avoiding burns; the movable sliding sleeve is fitted over the protective jacket, with two bolts connected to the bottom of the sliding sleeve, the bolts being connected to the movable clamping posts, and nuts being threaded onto the ends of the bolts; a return spring is fitted over the protective jacket, located above the movable sliding sleeve.

[0006] Furthermore, the protective jacket is surrounded by heat sinks, and guide holes are symmetrically arranged on the outside of the protective jacket. The movable clamping column is slidably connected in the guide holes, and the heat sinks ensure the heat release effect of the 3D printing nozzle.

[0007] Furthermore, the movable sliding sleeve is slidably connected to the protective outer sleeve. The protective outer sleeve has symmetrically arranged fixed blocks on its outer side, and the movable sliding sleeve has symmetrically arranged movable holes inside its inner side. The fixed blocks are slidably connected to the movable holes. Through the sliding cooperation between the fixed blocks and the movable holes, the movable sliding sleeve is guided to move.

[0008] Furthermore, the movable clamping column has an internal connecting hole, and the movable sliding sleeve has symmetrically arranged external oblique holes, with the internal connecting hole and the external oblique hole communicating with each other.

[0009] Furthermore, the bolt passes through and connects the outer inclined hole and the inner connecting hole, with both ends of the bolt slidably connected in the outer inclined hole.

[0010] Furthermore, when the movable sliding sleeve is at its lowest point, the bolt moves to the upper end of the outer inclined hole, and the movable clamping column moves to its innermost point. When the movable sliding sleeve is at its highest point, the bolt moves to the lower end of the outer inclined hole, and the movable clamping column moves to its outermost point.

[0011] Furthermore, the upper end of the return spring contacts the protective jacket, and the lower end of the return spring contacts the top of the movable sliding sleeve. The return spring provides an elastic return effect to the movable sliding sleeve. When the protective jacket is fitted onto the outside of the 3D printing nozzle, the movable sliding sleeve moves downward under the push of the return spring. The movable sliding sleeve drives the two movable clamping columns to move inward synchronously through the bolts, so that the inner ends of the movable clamping columns are in close contact with the 3D printing nozzle, achieving a clamping and fixing effect and ensuring the firmness of the connection between the device and the 3D printing nozzle.

[0012] This utility model provides a hot-end protection device for the nozzle of a 3D printer, which has the following beneficial effects: When in use, this invention, once the protective cover is securely fitted over the 3D printing nozzle, fully utilizes its protective function, effectively preventing direct contact with the nozzle body and thus avoiding burns from high temperatures. The heat sink on the protective cover ensures that the heat generated by the 3D printing nozzle is fully released, guaranteeing its normal operating temperature.

[0013] Furthermore, the fixed block and the movable hole adopt a sliding fit, which provides precise guidance for the movement of the movable sleeve, ensuring that the movable sleeve can move smoothly and linearly. The setting of the return spring gives the movable sleeve an elastic return function. When the protective cover is put on the outside of the 3D printing nozzle, the movable sleeve will automatically move downward under the push of the return spring. The movable sleeve drives the two movable clamping columns to move inward synchronously through the bolts, so that the inner end of the movable clamping column is tightly fitted with the 3D printing nozzle, achieving a stable clamping and fixing effect, ensuring the firmness of the connection between the entire device and the 3D printing nozzle. The installation process is simple and quick, greatly saving installation time.

[0014] Other advantages, objectives and features of this invention will be apparent in part from the description which follows, and in part from the understanding of those skilled in the art through study and practice of this invention. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0017] In the attached diagram: Figure 1 A schematic diagram of the overall axonometric structure of this application is shown; Figure 2 A schematic diagram of the axial structure of the protective jacket of this application is shown; Figure 3 A schematic diagram of the disassembled structure of the movable clamping column and bolts of this application is shown; Figure 4 A schematic diagram of the axle side structure of the movable sliding sleeve of this application is shown.

[0018] Figure label: 1. Protective jacket; 11. Heat sink; 12. Guide hole; 13. Fixed block; 2. Movable clamping post; 21. Internal connecting hole; 3. Movable sliding sleeve; 31. Movable hole; 32. External oblique hole; 4. Bolt; 5. Nut; 6. Return spring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example 1: Please refer to Figures 1 to 4 : This utility model proposes a hot-end protection device for the nozzle of a 3D printer, comprising: a protective jacket 1, movable clamping posts 2, movable sliding sleeve 3, bolts 4, nuts 5, and a return spring 6; the protective jacket 1 is fitted over the outside of the 3D printer nozzle, and two movable clamping posts 2 are connected inside the protective jacket 1, with the inner ends of the movable clamping posts 2 in contact with the 3D printer nozzle; the movable sliding sleeve 3 is fitted over the protective jacket 1, and two bolts 4 are connected to the bottom of the movable sliding sleeve 3, the bolts 4 being connected to the movable clamping posts 2, and nuts 5 being threaded to the ends of the bolts 4; the return spring 6 is fitted over the protective jacket 1, and the return spring 6 is located above the movable sliding sleeve 3.

[0021] In this embodiment of the utility model, a heat sink 11 is arranged around the outside of the protective jacket 1, and guide holes 12 are symmetrically arranged on the outside of the protective jacket 1. The movable clamping post 2 is slidably connected to the guide hole 12. Using the above technical solution, when the protective jacket 1 is put on the outside of the 3D printing nozzle, the protective jacket 1 can protect the 3D printing nozzle from direct contact with the body of the 3D printing nozzle, thus preventing high temperature burns. The heat sink 11 ensures the heat release effect of the 3D printing nozzle.

[0022] In this embodiment of the utility model, the movable sliding sleeve 3 is slidably connected to the protective outer sleeve 1, the protective outer sleeve 1 is symmetrically provided with fixed blocks 13 on the outside, the movable sliding sleeve 3 is symmetrically provided with movable holes 31 inside, and the fixed blocks 13 are slidably connected to the movable holes 31. By adopting the above technical solution, the fixed block 13 and the movable hole 31 slide together to guide the movement of the movable sliding sleeve 3.

[0023] In this embodiment of the utility model, the movable clamping column 2 is provided with an inner connecting hole 21, and the movable sliding sleeve 3 is provided with an outer oblique hole 32 symmetrically arranged on the outside. The inner connecting hole 21 and the outer oblique hole 32 are connected. The bolt 4 passes through and is connected to the outer oblique hole 32 and the inner connecting hole 21 in the connected state. The two ends of the bolt 4 are slidably connected to the outer oblique hole 32. When the movable sliding sleeve 3 is at the lowest end, the bolt 4 moves to the upper end of the outer oblique hole 32 and the movable clamping column 2 moves to the innermost end. When the movable sliding sleeve 3 is at the highest end, the bolt 4 moves to the lower end of the outer oblique hole 32 and the movable clamping column 2 moves to the outermost end. The upper end of the return spring 6 contacts the protective sleeve 1, and the lower end of the return spring 6 contacts the top of the movable sliding sleeve 3. Using the above technical solution, the reset spring 6 provides an elastic reset effect for the movable sliding sleeve 3. When the protective cover 1 is fitted onto the outside of the 3D printing nozzle, the movable sliding sleeve 3 moves downward under the push of the reset spring 6. The movable sliding sleeve 3 drives the two movable clamping columns 2 to move inward synchronously through the bolt 4, so that the inner end of the movable clamping column 2 is in close contact with the 3D printing nozzle, achieving a clamping and fixing effect, ensuring the firmness of the connection between the device and the 3D printing nozzle, and making the installation simpler and more time-saving.

[0024] The working principle of this embodiment is as follows: First, the protective sleeve 1 is placed on the outside of the 3D printing nozzle. The movable sliding sleeve 3 moves downward under the push of the return spring 6. The movable sliding sleeve 3 drives the two movable clamping columns 2 to move inward synchronously through the bolt 4, so that the inner end of the movable clamping column 2 is in close contact with the 3D printing nozzle, which achieves the clamping and fixing effect, ensuring the firmness of the connection between the device and the 3D printing nozzle, and making the installation simpler and more time-saving. The protective sleeve 1 provides protection for the 3D printing nozzle, avoiding direct contact with the body of the 3D printing nozzle and preventing high temperature burns. The heat sink 11 ensures the heat release effect of the 3D printing nozzle.

[0025] The following points should be noted in this article: 1. The accompanying drawings of this utility model embodiment only involve the structure involved in this utility model embodiment; other structures can refer to general designs.

[0026] 2. Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0027] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A hot-end protection device for the nozzle of a 3D printer, comprising: The protective jacket (1), movable clamping column (2), movable sliding sleeve (3), bolt (4), nut (5), and return spring (6) are characterized in that the protective jacket (1) is fitted outside the 3D printing nozzle, and two movable clamping columns (2) are connected inside the protective jacket (1), with the inner end of the movable clamping column (2) in contact with the 3D printing nozzle; the protective jacket (1) is fitted with a movable sliding sleeve (3), and two bolts (4) are connected to the bottom of the movable sliding sleeve (3), with the bolts (4) connected to the movable clamping column (2), and the end of the bolts (4) is threaded with a nut (5); the protective jacket (1) is fitted with a return spring (6), which is located above the movable sliding sleeve (3).

2. The nozzle hot-end protection device for a 3D printer according to claim 1, characterized in that, The protective jacket (1) is surrounded by heat sinks (11), and guide holes (12) are symmetrically arranged on the outside of the protective jacket (1). The movable clamping column (2) is slidably connected in the guide hole (12).

3. The nozzle hot-end protection device for a 3D printer according to claim 2, characterized in that, The movable sliding sleeve (3) is slidably connected to the protective outer sleeve (1). The protective outer sleeve (1) is symmetrically provided with fixed blocks (13) on the outside. The movable sliding sleeve (3) is symmetrically provided with movable holes (31) inside. The fixed blocks (13) are slidably connected to the movable holes (31).

4. A nozzle hot-end protection device for a 3D printer according to claim 3, characterized in that, The movable clamping column (2) has an internal connecting hole (21) inside, and the movable sliding sleeve (3) has symmetrically arranged external inclined holes (32) on the outside. The internal connecting hole (21) and the external inclined hole (32) are connected.

5. A nozzle hot-end protection device for a 3D printer according to claim 4, characterized in that, The bolt (4) is connected through the outer inclined hole (32) and the inner connecting hole (21) in a connected state, and the two ends of the bolt (4) are slidably connected in the outer inclined hole (32).

6. A nozzle hot-end protection device for a 3D printer according to claim 5, characterized in that, When the movable sliding sleeve (3) is at the lowest end, the bolt (4) moves to the upper end of the outer inclined hole (32) and the movable clamping column (2) moves to the innermost end. When the movable sliding sleeve (3) is at the highest end, the bolt (4) moves to the lower end of the outer inclined hole (32) and the movable clamping column (2) moves to the outermost end.

7. A nozzle hot-end protection device for a 3D printer according to claim 1, characterized in that, The upper end of the return spring (6) contacts the protective jacket (1), and the lower end of the return spring (6) contacts the top of the movable sliding sleeve (3).

Images