3D printer spray head with nozzle diameters changed in real time

Abstract

The invention discloses a 3D printer spray head with nozzle diameters changed in real time. The 3D printer spray head with the nozzle diameters changed in real time comprises a feeding throat pipe, a heating block arranged on the outer end portion of the feeding throat pipe, a nozzle butt joint position is arranged on the lower end face of the heating block, and a heating block discharging opening with an inner end communicating with a feeding inner pipe of the feeding throat pipe is arranged at the nozzle butt joint position. The 3D printer spray head with the nozzle diameters changed in real time further comprises a plurality of nozzles. A walking track groove is formed in the lower end face of the heating block, and the multiple nozzles are arranged in the walking track groove in a sliding manner. The nozzle butt joint position is arranged on the bottom wall of the walking track groove. A drive frame is arranged among the multiple nozzles in a mutual fixing manner. A drive motor is in transmission connection with the drive frame and is used for driving the multiple nozzles to slide in the walking track groove and enabling the multiple nozzles to switch at the nozzle butt joint position, and when each nozzle slides and is switched to the nozzle butt joint position, a nozzle feeding opening communicates with the heating block discharging opening in a butt joint manner. The 3D printer spray head has the beneficial effect that the nozzle diameters can be switched in real time in the printing process.

Description

technical field [0001] The invention relates to a 3D printer, in particular to a 3D printer nozzle with real-time variable nozzle diameter. Background technique [0002] 3D printing technology appeared in the 1980s, also known as "rapid prototyping technology". Its biggest advantage is that any object can be directly generated from the graphic data designed by the computer without machining or molds, thereby greatly shortening the product development cycle, improving productivity and reducing production costs. Therefore, it is widely used in art and industry. 3D printing technology, according to its different molding methods, can be divided into stereolithography (SLA), laminated entity manufacturing (LOM), selective laser sintering (SLS), fused deposition manufacturing (Fused Deposition Modeling, FDM) and so on. Among them, the most essential difference between the FDM rapid prototyping system and other systems is that it does not use a laser system, so it has the lowest ...

AI Technical Summary

Problems solved by technology

[0006] (1) Chinese Patent Publication No. CN105109041A discloses a 3D printer with replaceable nozzle printing. This technical solution completely changes the nozzle structure of the traditional FDM process 3D printer, and additional guide rails are required for transmission. This structure is not applicable 3D printers that are very popular in the market

[0007] (2) Chinese Patent Publication No. CN105965898A discloses a rotatable and switchable 3D printer nozzle. The rotation of the printer nozzle in this technical solution requires external force, such as manual switching, which is essentially not much different from the traditional manual replacement of printer nozzles. Different, most importantly, this technical solution cannot realize the function of automatic real-time switching of real-time nozzles

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