一种打印头
By designing heat dissipation components and throats in the printhead with vertical contact and setting a cavity structure, the problem of consumable expansion and blockage caused by poor heat conduction in the printhead is solved, achieving efficient heat dissipation and stable material output.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN HANIN CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-07-17
AI Technical Summary
Existing 3D printers have poor heat conduction in the print head, which causes the filament inside the throat to expand, increasing the extrusion pressure and causing blockages that prevent material from being discharged.
Design a printhead including a heat sink and a throat. The heat sink and the throat are respectively provided with a heat dissipation section and a material feeding section. The contact area is increased by the heat dissipation sections that abut each other in a vertical direction, and a cavity is set between the material feeding sections. The air in the cavity is used to conduct heat to achieve rapid heat dissipation.
It improves heat dissipation efficiency, prevents consumables from expanding, reduces blockages, ensures smooth material discharge, and enhances the strength and connection stability of the throat.
Smart Images
Figure CN224510431U_ABST
Abstract
Claims
1. A printhead, characterized by: include The heat dissipation component (1) is provided with a first heat dissipation part (12), a first material passage part (13) and a first material channel (14), wherein the first material channel (14) passes through the first material passage part (13); The throat (2) is provided with a second heat dissipation part (21), a second material passage part (22) and a second material channel (23). The second material channel (23) passes through the second material passage part (22). The first material passage part (13) and the second material passage part (22) are adapted to abut against each other along a first direction (6) so that the second material channel (23) is adapted to communicate with the first material channel (14). The first heat dissipation part (12) and the second heat dissipation part (21) abut against each other in a direction perpendicular to the first direction (6), and the second heat dissipation part (21) has a cavity (7) between itself and the outer wall of the first material passage part (13) or the second material passage part (22) in a direction perpendicular to the first direction (6).
2. A printhead as in claim 1, wherein: The second heat dissipation part (21) and the first heat dissipation part (12) are not attached to the outer walls of the first material passing part (13) and the second material passing part (22).
3. A printhead as in claim 1, wherein: The first heat dissipation part (12) is annular, the second heat dissipation part (21) is annular, the first heat dissipation part (12) and the second heat dissipation part (21) are threadedly connected, or the second heat dissipation part (21) and the first heat dissipation part (12) are inserted along the first direction (6).
4. A printhead as in Claim 1, wherein: It also includes a fastener (8), the heat sink (1) is provided with a first threaded hole (15) penetrating the first heat sink (12), and the fastener (8) is adapted to be threadedly engaged with the first threaded hole (15) and abut against the second heat sink (21).
5. A printhead as in Claim 1, wherein: The contact area between the first material feeding section (13) and the second material feeding section (22) is smaller than the contact area between the first heat dissipation section (12) and the second heat dissipation section (21).
6. A printhead as claimed in any one of claims 1 to 5 wherein: It also includes a nozzle (3) and a heating element (4). The nozzle (3) is provided with a discharge channel (33) that communicates with the discharge end of the second material channel (23). The heating element (4) covers part of the outer wall of the nozzle (3) and the throat (2) to melt the consumables in the second material channel (23) and the discharge channel (33).
7. A printhead as in claim 6 wherein: The outer wall dimension of the middle part of the throat (2) is smaller than the dimension of the end that mates with the heat sink (1) and the end that mates with the nozzle (3).
8. A printhead as in Claim 6, wherein: The nozzle (3) is threadedly connected to the heating element (4), and the throat (2) is threadedly connected to the heating element (4); the portions of the throat (2) and the nozzle (3) exposed on the heating element (4) are provided with operating surfaces (9).
9. A printhead as in Claim 6, wherein: It also includes a heat insulation sleeve (5), which is fitted over the heating element (4).
10. A printhead as in Claim 6, wherein: It also includes a temperature sensing element, which is mounted on the heating element (4) and is adapted to detect the temperature of the heating element (4).