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Desktop 3D printer with novel wire feeding mechanism

A technology of 3D printer and wire feeding mechanism, which is applied in the field of 3D printing, and can solve the problems of insufficient spray nozzle stability, poor printing quality, and large wire feeding resistance, and achieve stable feeding, improved effective contact, and low wire feeding resistance Effect

Pending Publication Date: 2018-07-10
QINGDAO HUANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wire feeding mechanism of a 3D printer based on FDM technology is divided into an internal wire feeding mechanism and an external wire feeding mechanism. The external wire feeding mechanism has problems such as nozzle broken wires and product defects due to insufficient wire material. The internal wire feeding mechanism has problems in printing accuracy and feeding There are defects in stability, and there are also problems such as large wire feeding resistance, insufficient nozzle spraying stability, and poor printing quality, so it is necessary to improve the performance of the entire wire feeding mechanism

Method used

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  • Desktop 3D printer with novel wire feeding mechanism
  • Desktop 3D printer with novel wire feeding mechanism
  • Desktop 3D printer with novel wire feeding mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] combine Figure 1 to Figure 6 As shown, this embodiment is a detailed description of the structure of a desktop 3D printer with a new wire feeding mechanism.

[0025] Such as figure 1 and figure 2 As shown, a desktop 3D printer with a new type of wire feeding mechanism specifically includes a wire feeding mechanism 1 , a slide rail mechanism 3 , a screw feeding mechanism 4 , a horizontal movement mechanism 5 and a printer support mechanism 2 . The printer support mechanism 2 is used as the shell support of the 3D printer. The wire feeding mechanism 1 includes an external wire feeding mechanism 11 and an internal wire feeding mechanism 12 , the external wire feeding mechanism 11 is fixedly installed on the outside of the printer or near the printer through a mounting plate, and the internal wire feeding mechanism 12 is arranged on the slide rail mechanism 3 . Lead screw feed mechanism 4 is fixed on the printer supporting mechanism, and comprises two vertical screw ma...

Embodiment 2

[0031] This embodiment is an illustration of the structural optimization design of the external wire feeding mechanism of the desktop 3D printer in Embodiment 1.

[0032] combine Figure 4 As shown, the wire reels used by desktop 3D printers mainly have specifications such as 0.5kg and 1.0kg, and the inner diameters of wire reels with different weights are inconsistent. The adjustable external wire feeding mechanism 11 is designed to adapt to different inner diameters, which can reduce wire feeding friction Resistance, the support shaft 103 and the bearing 111 provided by the external wire feeding mechanism 11 have a self-lubricating function, which avoids the problem of broken wires in the nozzle caused by insufficient wire material, resulting in product defects.

[0033] As one of the key structures of the external wire feeding mechanism, the support shaft is the main force-bearing part. The material is ordinary carbon steel Q200. The support shaft is not directly connected ...

Embodiment 3

[0036] This embodiment is an illustration of the structural optimization design of the internal wire feeding mechanism of the desktop 3D printer in Embodiment 1.

[0037] combine figure 1 , figure 2 and Figure 6 The internal wire feeding mechanism 12 shown is the main structure of the heating extrusion device. The wire feeding motor 201 uses a stepping motor to drive the active wire feeding wheel 213 to rotate, pushes the solid wire through the upper teeth of the wire feeding gear, and cooperates with the driven wheel to move The wire is sent to the wire feeding tube and enters the heating device. There are three kinds of extrusion methods: piston type, sliding vane pump type, and plunger pump type. Considering the performance of the device and the complexity of the design, the nozzle 208 is a piston type extrusion device. This design requires low control accuracy, small overall quality, and difficult processing. Small size, low processing cost and short development cycle...

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Abstract

The invention discloses a desktop 3D printer with a novel wire feeding mechanism. The desktop 3D printer solves the problem of low wire feeding power or wire release. The wire feeding mechanism comprises an external wire feeding mechanism and an internal wire feeding mechanism. A crank sliding block mechanism composed of a support ejection rod and a support inclined rod in the internal wire feeding mechanism is used for adjusting the support diameter. The end of a support shaft is provided with a fastening nut for fixing a self-tightening support inclined rod. A fixing sleeve is arranged at the top of the support ejection rod. The internal wire feeding mechanism utilizes a stepping motor to drive wire feeding gears to rotate. Teeth on the driving wire feeding gear are used for pushing a solid raw material. An adjustable spring has a fine adjustment function and is used for adjusting distances among the auxiliary wire feeding gear, the driving wire feeding gear and a raw material modelso that the effective contact between the driving wire feed gear and the raw material model is improved. The desktop 3D printer has the advantages of feeding stability, small wire feeding resistance,material spraying stability and high printing quality.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a desktop-level 3D printer with a novel wire feeding mechanism. Background technique [0002] 3D printing technology is developing rapidly. At present, desktop 3D printers are gradually becoming popular. 3D printers based on FDM technology heat ABS, PLA and other filaments to a molten state, extrude them according to a set path, and accumulate them layer by layer to form a solid body. In the process of turning into a semi-liquid molten material, there are problems such as high friction of the wire feeding device and unstable supply of raw materials. The wire feeding mechanism of a 3D printer based on FDM technology is divided into an internal wire feeding mechanism and an external wire feeding mechanism. The external wire feeding mechanism has problems such as nozzle broken wires and product defects due to insufficient wire material. The internal wire feeding mechanism has p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/118B29C64/321B33Y30/00
CPCB33Y30/00
Inventor 王海艳宋爱利王娜刘纪新姜云春庞敏邱思波王福龙
Owner QINGDAO HUANGHAI UNIV
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