Wire feeding mechanism for fused deposition additive manufacturing of flexible wires

A fused deposition and additive manufacturing technology, applied in the field of 3D printing, can solve the problems of wire winding and wire wrapping, and achieve the effect of precise wire feeding, avoiding wire wrapping and improving work stability.

Active Publication Date: 2017-03-22
HARBIN UNIV OF SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention aims to solve the problem that the wire feeding mechanism of the existing fused deposition method 3D printing is prone to wire winding and wi

Method used

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  • Wire feeding mechanism for fused deposition additive manufacturing of flexible wires
  • Wire feeding mechanism for fused deposition additive manufacturing of flexible wires
  • Wire feeding mechanism for fused deposition additive manufacturing of flexible wires

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Example Embodiment

[0024] Specific implementation mode 1: the following combination figure 1 with figure 2 To explain this embodiment, the wire feeding mechanism for fused deposition additive manufacturing of flexible wire material in this embodiment includes a driving gear 3, a driven gear 4, and a nozzle 6. There is a gap between the driving gear 3 and the driven gear 4. And the driving gear 3 and the driven gear 4 are symmetrically arranged on the 3D printed support 7, and the gap value is 0.9 times the diameter of the printed wire. A nozzle 6 is provided directly below the gap between the driving gear 3 and the driven gear 4. The wire feeding mechanism also includes a driving gear fixed housing 1, a driven gear fixed housing 2 and a throat pipe 5. The driving gear fixed housing 1 and the driven gear fixed housing 2 are symmetrically mounted on the bracket, and the driving gear 3 and the driven gear 4 A throat tube 5 is arranged between the top surface of the throat tube 5 and the lower edge...

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Abstract

The invention discloses a wire feeding mechanism for fused deposition additive manufacturing of flexible wires, and belongs to the technical field of 3D printing. The wire feeding mechanism solves the problem that in an existing fused deposition method 3D printing wire feeding mechanism, when relatively-soft flexible materials are printed, the phenomena of wire winding and wrapping are prone to being generated. According to the wire feeding mechanism, a driving gear and a driven gear are precisely located in a clearance fit manner or through fixing bolts; a throat pipe is arranged between the driving gear and the driven gear; the top face of the throat pipe is not lower than the lower edge of the driving gear; the throat pipe is made of a heat insulation material; the lower portion of the throat pipe is detachably connected with a material storage device; a feeding opening is formed in the position, close to the throat pipe, of the bottom of the material storage device; the bottom of the material storage device is detachably connected with a nozzle; and the top of the nozzle communicates with the feeding opening of the material storage device. According to the wire feeding mechanism, the phenomena of wire winding and wrapping of TPU and other flexible materials on a common fused deposition method 3D printing machine are avoided, and 3D printing of the flexible materials can be carried out smoothly. Normal printing can still be achieved when the HA of the flexible materials can be reduced to 60.

Description

Technical field [0001] The invention belongs to the technical field of 3D printing; relates to a wire feeding mechanism for fused deposition additive manufacturing of flexible filaments; specifically relates to a wire feeding mechanism for TPU flexible material additive manufacturing technology, which can solve the problem of TPU flexible material increase in fused deposition method. The winding and winding phenomenon in the printing process of material manufacturing technology ensures the smooth progress of the printing process. Background technique [0002] At present, the well-known fused deposition method 3D printing filament feeding mechanism (see image 3 ), which is mainly composed of the driving gear 21, the spring 25, the driven gear 27, and the corresponding brackets driven by the motor. The wire feeding mechanism of this structure can work normally for the harder materials of ABS and PLA. When printing relatively soft and flexible materials, such as TPU materials, it is...

Claims

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Application Information

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IPC IPC(8): B29C64/118B29C64/321B33Y30/00B33Y40/00
CPCB33Y30/00B33Y40/00
Inventor 张晓华贾国钊付晓爽陈晓桐黄子鸿
Owner HARBIN UNIV OF SCI & TECH
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