Printing head and 3D printer
By designing the limit structure of the heat conductor and the throat pipe in the 3D print head and fixing the limit of the heating parts by the clamp, the safety hazards caused by the loosening of the throat pipe and heating components in the print head are solved, and the compactness and safety and stability of the print head structure are achieved.
Patent Information
- Application Number
- CN202420427545.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-06
AI Technical Summary
During the printing process, the printing head of the existing FDM type 3D printers is damaged due to loosening of the throat and heating assembly, causing the heating assembly to break away from the throat and causing it to be damaged, which poses a safety hazard.
A print head structure is designed, in which the bottom of the heat conducting member is equipped with an installation groove, a socket that is adapted to the throat pipe at the top, a limit bump is provided at the bottom of the throat pipe, the printing nozzle is installed at the bottom of the installation groove, the heating piece sleeve is installed outside the heat conducting member, and the heating piece and the temperature sensor are limited to the limit fixation to ensure the stable connection between the throat pipe and the heating piece.
Through the coordination of the limiting bumps and clamps, the stable connection between the throat and the heating parts is ensured, which reduces the safety risks of the print head during use and makes the entire print head structure compact.
Smart Images
Figure CN222697924U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of 3D printing, and in particular to a print head and a 3D printer. Background Art
[0002] The print head of an FDM 3D printer is an important component used by the 3D printer to spit out printing consumables. Its main structure is the same as the application number CN2023214953515, the patent name is print head and the print head technical scheme disclosed by the 3D printer. It mainly includes components such as a nozzle, a heating component, a heat dissipation component and a throat. In this technical scheme, the throat is used to connect the heating component and the heat dissipation component, and the throat forms a tightly fixed connection structure between the two by an interference fit plug. After this connection is continuously moved during the printing process of the print head, the print head vibrates up and down. Over time, the throat may become loose with the heating component located below, eventually causing the heating component to detach from the throat and fall off and be damaged. Therefore, there is a safety hazard in use. Utility Model Content
[0003] In order to solve the deficiencies of the prior art, the utility model provides a print head and a 3D printer. The print head has a simple structure and can reduce potential safety hazards in use.
[0004] The technical problem to be solved by the utility model is achieved through the following technical means: One aspect of the utility model is to propose a print head, including a throat, a heating element, a heat-conducting element, and a print nozzle, wherein a mounting groove is arranged in the middle of the bottom of the heat-conducting element, a plug hole adapted to the throat is arranged between the top of the heat-conducting element and the mounting groove, the inner diameter of the plug hole is smaller than the inner diameter of the mounting groove, a limiting protrusion is arranged at the bottom of the throat, the print nozzle is installed at the bottom of the mounting groove, the heating element is sleeved on the outside of the heat-conducting element, the heat-conducting element is provided with an annular groove on the upper part of the heating element, a clamp is adapted to be arranged in the annular groove, and the lower part of the clamp abuts against the upper part of the heating element.
[0005] In the above scheme, the throat can be inserted into the jack, and because there is a limiting protrusion at the bottom of the throat, the limiting protrusion can be stuck under the jack, so that the throat is limited in the jack and cannot be disengaged upward; in addition, the limiting protrusion is located in the upper part of the interior of the installation groove, and the printing nozzle is installed in the lower part of the interior of the installation groove, so the printing nozzle can be pressed against the limiting protrusion, so that the position of the limiting protrusion is fixed; therefore, under the cooperation of the printing nozzle and the limiting protrusion, the throat can be fixed and connected to the heat conducting member, and will not be separated from the heat conducting member, thereby reducing safety hazards when using the print head. In addition, the heating element is set on the outside of the heat conducting member, and the heating element can be limited by the clamp, so that the heating element is limited and fixed, so that the entire print head structure is compact.
[0006] In one embodiment, the heating element is ring-shaped.
[0007] In the above solution, the heating element can be inserted into the heat-conducting element from top to bottom.
[0008] In one embodiment, a limiting protrusion matching with the bottom of the heating element is provided at the bottom of the heat conducting element.
[0009] In the above solution, the limiting protrusion can provide a lower limit for the bottom of the heat-conducting element to prevent the heating element from being separated from the bottom of the heat-conducting element.
[0010] In one embodiment, a mounting cavity is provided on one side of the upper portion of the heat conducting member, a portion of the mounting cavity is communicated with the annular groove, a temperature sensor is provided in the mounting cavity, and a portion of the clamp clamps the temperature sensor in the mounting cavity.
[0011] In the above solution, the temperature sensor is a common accessory of the print head. In the present invention, a clamp can be used to clamp the temperature sensor so that the temperature sensor is limited and fixed.
[0012] In one embodiment, the heating element is provided with a positive electrode terminal and a negative electrode terminal.
[0013] In the above solution, the positive electrode terminal and the negative electrode terminal are used to connect the wires, and the heating element is an electric heating element, such as an annular shell plus an electric heating wire arranged on the annular shell.
[0014] In one embodiment, an external thread structure is provided on the upper portion of the print head, and the print head is screwed into the mounting groove.
[0015] In the above solution, the print head is screwed into the mounting slot.
[0016] In one embodiment, the upper portion of the print head abuts against the lower portion of the limiting protrusion, and a material passing hole adapted to the throat is provided in the middle portion of the limiting protrusion.
[0017] Another aspect of the present invention is to provide a 3D printer, which comprises the print head. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 is a schematic diagram of the structure of a print head in an embodiment;
[0019] Figure 2 It is a schematic diagram of a partial exploded structure of a print head in an embodiment. DETAILED DESCRIPTION
[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0021] like Figure 1 to Figure 2 As shown, the technical solution adopted by the utility model is that the technical problem to be solved by the utility model is achieved by the following technical means: One aspect of the utility model is to propose a print head, including a throat 1, a heating element 2, a heat-conducting element 3, and a print head 4, a mounting groove is arranged in the middle of the bottom of the heat-conducting element 3, a plug hole 5 adapted to the throat 1 is arranged between the top of the heat-conducting element 3 and the mounting groove, the inner diameter of the plug hole 5 is smaller than the inner diameter of the mounting groove, a limiting protrusion 6 is arranged at the bottom of the throat 1, the print head 4 is installed at the bottom of the mounting groove, the heating element 2 is sleeved on the outside of the heat-conducting element 3, the heat-conducting element 3 is provided with an annular groove 7 on the upper part of the heating element 2, a clamp 8 is adapted to be arranged in the annular groove 7, and the lower part of the clamp 8 is abutted against the upper part of the heating element 2.
[0022] In the above scheme, the throat 1 can be inserted into the jack 5, and since there is a limiting protrusion 6 at the bottom of the throat 1, the limiting protrusion 6 can be stuck under the jack 5, so that the throat 1 is limited in the jack 5 and cannot be disengaged upward; in addition, the limiting protrusion 6 is located in the upper part of the interior of the installation groove, and the printing nozzle 4 is installed in the lower part of the interior of the installation groove, so the printing nozzle 4 can also press the limiting protrusion 6, so that the position of the limiting protrusion 6 is fixed; therefore, under the cooperation of the printing nozzle 4 and the limiting protrusion 6, the throat 1 can be limited and fixed and connected to the heat conducting member 3, and will not be separated from the heat conducting member 3, thereby reducing the safety hazards when using the print head. In addition, the heating element 2 is sleeved on the outside of the heat conducting member 3, and the heating element 2 can be limited by the clamp 8, so that the heating element 2 is limited and fixed, so that the entire print head structure is compact.
[0023] In one embodiment, the heating element 2 is ring-shaped.
[0024] In the above solution, the heating element 2 can be inserted into the heat conducting element 3 from top to bottom.
[0025] In one embodiment, a limiting protrusion 6 matching with the bottom of the heating element 2 is provided at the bottom of the heat conducting element 3 .
[0026] In the above solution, the limiting protrusion 6 can provide a lower limit for the bottom of the heat-conducting member 3 to prevent the heating member 2 from being separated from the bottom of the heat-conducting member 3 .
[0027] In one embodiment, an installation cavity 9 is provided on one side of the upper part of the heat conductor 3, a portion of the installation cavity 9 is communicated with the annular groove 7, a temperature sensor is provided in the installation cavity 9, and a portion of the clamp 8 clamps the temperature sensor in the installation cavity 9.
[0028] In the above solution, the temperature sensor is a common accessory of the print head. In the present invention, the clamp 8 can be used to clamp the temperature sensor so that the temperature sensor is limited and fixed.
[0029] In one embodiment, the heating element 2 is provided with a positive electrode terminal 10 and a negative electrode terminal 11 .
[0030] In the above solution, the positive electrode terminal 10 and the negative electrode terminal 11 are used to connect the wires, and the heating element 2 is an electric heating element, such as an annular shell plus an electric heating wire arranged on the annular shell.
[0031] In one embodiment, an external thread structure 12 is provided on the upper portion of the print head 4, and the print head 4 is screwed into the mounting groove.
[0032] In the above solution, the print head is screwed into the mounting slot.
[0033] In one embodiment, the upper portion of the print head 4 abuts against the lower portion of the limiting protrusion 6 , and a material passing hole adapted to the throat 1 is provided in the middle portion of the limiting protrusion 6 .
[0034] Another aspect of the present invention is to provide a 3D printer, which comprises the print head.
Claims
1. A print head, comprising a throat (1), a heating element (2), a heat conducting element (3), and a print head (4), characterized in that: A mounting groove is provided in the middle of the bottom of the heat-conducting member (3); a plug hole (5) adapted to the throat (1) is provided between the top of the heat-conducting member (3) and the mounting groove; the inner diameter of the plug hole (5) is smaller than the inner diameter of the mounting groove; a limiting protrusion (6) is provided at the bottom of the throat (1); the print head (4) is mounted at the bottom of the mounting groove; the heating member (2) is sleeved on the outside of the heat-conducting member (3); the heat-conducting member (3) is provided with an annular groove (7) on the upper part of the heating member (2); a clamp (8) is adapted to be provided in the annular groove (7); the lower part of the clamp (8) abuts against the upper part of the heating member (2).
2. The print head according to claim 1, characterized in that: The heating element (2) is ring-shaped.
3. The print head according to claim 1, characterized in that: The bottom of the heat conducting element (3) is provided with a limiting protrusion (6) which matches the bottom of the heating element (2).
4. The print head according to claim 1, characterized in that: A mounting cavity (9) is provided on one side of the upper portion of the heat conducting member (3), a portion of the mounting cavity (9) is in communication with the annular groove (7), a temperature sensor is provided in the mounting cavity (9), and a portion of the clamp (8) clamps the temperature sensor in the mounting cavity (9).
5. The print head according to claim 1, characterized in that: The heating element (2) is provided with a positive electrode terminal (10) and a negative electrode terminal (11).
6. The print head according to claim 1, characterized in that: An external thread structure (12) is provided on the upper portion of the printing nozzle (4), and the printing nozzle (4) is screwed into the mounting groove.
7. The print head according to claim 1 or 6, characterized in that: The upper part of the printing nozzle (4) is in contact with the lower part of the limiting protrusion (6), and the middle part of the limiting protrusion (6) is provided with a material passing hole adapted to the throat (1).
8. A 3D printer, characterized in that: Comprising the print head as claimed in any one of claims 1 to 7.