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Continuous fiber reinforced composite 3D printing head with self-cleaning function

A reinforced composite material and continuous fiber technology, applied in the field of 3D printing, can solve problems such as nozzles being easily blocked, and achieve the effects of convenient cleaning, reduced energy consumption, and high heating efficiency

Active Publication Date: 2021-07-16
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the prior art, the present invention effectively solves the technical problem that the existing nozzles are easily blocked

Method used

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  • Continuous fiber reinforced composite 3D printing head with self-cleaning function
  • Continuous fiber reinforced composite 3D printing head with self-cleaning function
  • Continuous fiber reinforced composite 3D printing head with self-cleaning function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This embodiment provides a 3D printing head with no dead angle and self-cleaning function, which can prevent nozzles from being blocked during actual use, thereby facilitating continuous printing. Such as Figure 1-3 As shown, it includes a heating component, a fixed component and a metal capillary 1, and the specific structure, position and connection relationship of each component are as follows:

[0034] The heating assembly includes at least two stacked heating blocks 2. The heating block 2 can be an aluminum block or a stainless steel block. The heating block 2 is an existing conventional product, and its structural shape can be consistent with the existing conventional product. Each heating block 2 can satisfy the function of accurately controlling temperature. For example, the heating block 2 can be a square structure, and a temperature sensor and a heating rod can be arranged inside it to meet the functions of heating and temperature control.

[0035]Further, ...

Embodiment 2

[0041] On the basis of Example 1, in order to better heat the prepreg wire and ensure the plasticization quality of the prepreg wire, this embodiment adopts separate temperature control for each heating block 2. In actual operation, it is preferable to heat The heating temperature of block 2 decreases sequentially from top to bottom.

Embodiment 3

[0043] On the basis of Embodiment 1 or Embodiment 2, in order to better fix the heating component, this embodiment defines the structure of the fixing component, such as Figure 1-3 As shown, the fixing assembly includes a connecting plate 5 and a plurality of screws 6 , and the connecting plate 5 is fixed on the heating assembly through the screws 6 . Specifically, the two ends of the connecting plate 5 are respectively located on the sides of the uppermost and lowermost heating blocks 2, and each heating block 2 is provided with screw holes, and the connecting plate 5 is provided with corresponding screw holes, through which a plurality of screws 6 are respectively inserted. The connecting plate 5 can be fixed on the heating assembly through the screw holes. In order to ensure the overall stability of the heating assembly, preferably the fixing assembly is symmetrically fixed on both sides of the heating assembly.

[0044] The present invention will be specifically describe...

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Abstract

The invention discloses a continuous fiber reinforced composite 3D printing head with a self-cleaning function, and relates to the technical field of 3D printing. The continuous fiber reinforced composite 3D printing head comprises a heating assembly, a fixing assembly and a metal capillary tube, the heating assembly comprises at least two stacked heating blocks, a heat insulation layer is arranged between the adjacent heating blocks, and the heating assembly is fixed into a whole through the fixing assembly; and the metal capillary tube penetrates through the heating assembly from top to bottom, the two ends of the metal capillary tube are an upper feeding end and a lower discharging end respectively, and the lower discharging end serves as a nozzle and extends out of the heating assembly. A feeding channel and a forming channel are integrated, and dynamic dead angles in the printing head are thoroughly eliminated. Meanwhile, the size of the feeding channel is designed to be matched with the diameter of a wire material, so that the wire material peels off resin staying for a longer time and carries out possibly formed residues in the moving process, and the self-cleaning function is achieved. Compared with the prior art, the technical problem that an existing nozzle is prone to being blocked is effectively solved.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to the technical field of 3D printing of continuous fiber reinforced composite materials, in particular to a 3D printing head of continuous fiber reinforced composite materials with self-cleaning function. Background technique [0002] There are two main modes of 3D printing of continuous fiber reinforced composites: one is online impregnation, resin filament and fiber dry yarn enter the print head from two places, and melt impregnation is realized in the print head. The second is off-line impregnation. The fibers are pre-melted and impregnated in the impregnation mold to prepare prepreg filaments for 3D printing, and then 3D printing is performed directly on the prepreg filaments. It is generally believed that the impregnation effect of fibers and resins in printing patterns using prepreg filaments is better, and the interface properties are better. [0003] At present, there ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/112B29C64/295B29C64/35B29C64/321B33Y30/00B33Y40/00
CPCB29C64/112B29C64/295B29C64/35B29C64/321B33Y30/00B33Y40/00
Inventor 王孝军徐奔杨家操杨杰卫志美张刚龙盛如
Owner SICHUAN UNIV
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