Three-dimensional printer extrusion head capable of feeding in switching mode
A technology of 3D printers and extrusion heads, applied in the field of 3D printers, can solve problems such as mechanical positioning errors, increase costs, increase the weight of extrusion head components, etc., achieve constant feeding friction, avoid mechanical positioning errors, and stabilize feeding effects
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[0022] Examples:
[0023] Refer to Figure 1 and figure 2 As shown, a three-dimensional printer extrusion head with switchable feeding includes a base 1, a feeding switch assembly (3,4,10,11,12,13,14,15,16), and a feeding switch assembly passes through the first A rotating shaft 9 is rotatably connected with the base 1, and the passive feed rollers (3, 4) of the feed switching assembly are respectively arranged on both sides of the active feed wheel 2; the front of the base 1 is equipped with a printing filament heating and melting flow channel ( 7, 8), one end is connected to the printing filament (5, 6), the other end is connected to the printing filament extrusion nozzle (18, 19), the printing filament (5, 6) is respectively pressed against the passive feeding roller (3, 4) and the active feed wheel 2;
[0024] It includes a wire drive motor 24 installed on the back of the base 1, and an active feed wheel 2 directly connected to the wire drive motor 24. The wire drive motor 24 ...
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