Wire feeding speed control system and method of FDM rapid molding machine

A technology of speed control and control system, which is applied in the direction of additive processing, etc., can solve the problems affecting the speed of wire output, uneven thickness of initial speed, and clogging of printing nozzles, so as to improve printing quality, good adaptability, and improve molding quality effect

Active Publication Date: 2015-06-03
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current FDM rapid prototyping machine basically uses a fixed speed for constant speed control, but the actual density of different types of materials is different, and the thickness of the printing materials is not uniform enough to affect the quality of the printing materials that actuall

Method used

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  • Wire feeding speed control system and method of FDM rapid molding machine
  • Wire feeding speed control system and method of FDM rapid molding machine
  • Wire feeding speed control system and method of FDM rapid molding machine

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[0027] First of all, it should be explained that the present invention relates to engineering control technology, which is an application of computer technology in the field of engineering control technology. During the implementation of the present invention, the application of multiple software function modules will be involved. The applicant believes that, after carefully reading the application documents and accurately understanding the realization principle and purpose of the present invention, combined with existing known technologies, those skilled in the art can fully implement the present invention by using their software programming skills. The aforementioned software functional modules include but are not limited to: pressure setting module, closed-loop control module, wire feeding motor control module, etc. All mentioned in the application documents of the present invention belong to this category, and the applicant will not list them one by one.

[0028] The follo...

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Abstract

The invention relates to a control technology of a fused wire deposition molding 3D printing device and aims at providing a wire feeding speed control system and a wire feeding speed control method of an FDM rapid molding machine. The system comprises a pressure sensor arranged on an FDM printing nozzle; the pressure sensor and a pressure setting module are connected with a closed ring control module; the closed ring control module is sequentially connected with a motor control module and a wire feeding motor by a signal wire; and the wire feeding motor is connected with a friction wheel by transmission equipment. According to the system, a wire feeding speed is indirectly controlled according to the pressure of fused printing materials in a printing nozzle mold cavity, so that a wire feeding mount and a wire discharging amount are the same and the molding quality of fused wire deposition molding (FDM) is improved. The control on the wire feedings peed has better self-adaptability; and the influence on the wire feeding amount, caused by various interference factors of the outside, can be overcome through real-time online closed ring calculation control of the closed ring control module, so that the printing nozzle keeps a fixe wire discharging speed to print and the printing quality is improved.

Description

technical field [0001] The present invention relates to a control method of a fused deposition modeling (Fused Deposition Modeling, FDM) 3D printing device. More specifically, the present invention relates to a wire feeding speed control system and method for an FDM rapid prototyping machine. Background technique [0002] Fused Deposition Modeling (Fused Deposition Modeling, FDM) is a 3D printing processing method, which is currently one of the fastest-growing and most promising rapid prototyping technologies. The FDM rapid prototyping machine consists of a wire feeding mechanism, a printing nozzle, a motion control structure, a printing nozzle temperature control module, and a controller. The working principle of fused deposition modeling is to melt hot-melt materials (such as ABS, wax, etc.) through a heater, and the materials are first drawn into filaments for printing. Then the FDM molding equipment sends the filamentary printing material into the hot-melt nozzle throug...

Claims

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Application Information

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IPC IPC(8): B29C67/00B29C31/08B33Y50/02
Inventor 彭勇刚陆玲霞
Owner ZHEJIANG UNIV
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