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A technology of 3D printers and nozzles, which is applied in coating devices, additive processing, etc., and can solve problems such as the difficulty of achieving color printing with a single nozzle, color 3D printing, and other problems
Active Publication Date: 2018-05-18
HARBIN ENG UNIV
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[0004] The purpose of the present invention is to provide a color 3D printer extrusion nozzle that solves the problems of current 3D printers that are difficult to achieve color printing with a single nozzle and color difference in color 3D printing.
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[0019] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0020] combine Figure 1~4 , an extrusion nozzle of a color 3D printer in the present invention, comprising a small gear 1, a large gear 2, a nozzle 3, a heat-resistant glass 4, a micro stirring rod 5, a rotary sleeve 6, a retaining ring 7, a resistance wire heater 8, a screw Column I 9, water cooling pipe 10, throat 11, feeding assembly I 12, stud II 13, laser heater 14, laser head 15, feeding assembly II 16, feeding assembly III 17, temperature detector 18, motor Support 19, stepping motor 20, conical mixing chamber 21, through hole 22, flow channel I 23, annular groove 24, flow channel II 25, flow channel III 26 are arranged in the nozzle 3.
[0021] The feed components I-III, the motor bracket 19 and the resistance wire heater 8 are installed on the rotary mixing nozzle assembly, and the laser heater 14 is installed on the motor bracket 19 . The motor bracke...
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Abstract
The purpose of the present invention is to provide a color 3D printer extrusion nozzle, including a nozzle assembly, the nozzle assembly includes a nozzle, a rotary sleeve, a large gear, a small gear, a stepping motor, and the rotary sleeve is installed on the outside of the nozzle and passed through the ring on the rotary sleeve. The protrusion is positioned, a conical mixing chamber is formed between the bottom of the nozzle and the rotary sleeve, the nozzle is set under the conical mixing chamber, the large gear is installed outside the rotary sleeve through the elastic retaining ring, the small gear meshes with the large gear, and is fixed on the motor bracket. The stepper motor is connected to the pinion, and the motor bracket is fixed on the nozzle. The nozzle is provided with an annular groove, flow channel I, flow channel II and flow channel III, and the flow channel I, flow channel II, and flow channel III are all connected to the conical mixing chamber. , The resistance wire heater is installed in the annular groove, and the feed assembly I, feed assembly II, and feed assembly III are respectively installed outside the flow channel I, flow channel II, and flow channel III. The invention can solve the problems that the current 3D printers are difficult to realize single nozzle color printing and the color difference exists in the color 3D printing.
Description
technical field [0001] The invention relates to a 3D printer, in particular to a nozzle structure of the 3D printer. Background technique [0002] 3D printing (3DP) is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. According to the different molding methods and available materials, it can be divided into selective laser sintering (SLS), fused deposition modeling (FDM), stereolithography (SLA) and layered manufacturing (LOM). Among them, fused deposition modeling (FDM) ) has the advantages of high material utilization rate, low material cost, many types of optional materials, and simple process. FDM has developed rapidly and has been widely used. [0003] For 3D printers based on the principle of FDM, the current mainstream materials are PLA and ABS plastic wires. Most 3D printers on the market can only achieve single-color ...
Claims
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Application Information
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