Interlayer reinforcement technology for 3D printing of fiber reinforced composite

A technology of interlayer enhancement and 3D printing, applied in the direction of additive processing, 3D object support structure, additive manufacturing, etc., can solve the problems of poor interlayer bonding force, no improvement, and limited development, etc., to achieve good intralayer performance, Improve the effect of weak inter-layer performance and expand the application field

Inactive Publication Date: 2018-11-13
TIANJIN POLYTECHNIC UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the 3D printing technology of continuous fiber reinforced thermoplastic resin matrix composites adopts the same layer-by-layer lay-up process as the traditional technology to form products, and the poor interlayer bonding force o

Method used

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  • Interlayer reinforcement technology for 3D printing of fiber reinforced composite
  • Interlayer reinforcement technology for 3D printing of fiber reinforced composite
  • Interlayer reinforcement technology for 3D printing of fiber reinforced composite

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Embodiment Construction

[0020] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0021] The fiber-reinforced thermoplastic 3D printer in this embodiment has two nozzles, one nozzle is used to print continuous fiber-reinforced thermoplastic materials in the plane of the product (referred to as in-plane nozzle 120), and the other nozzle is a special nozzle for interlayer reinforcement (referred to as reinforcement nozzle 110). The interlayer reinforcement of 3D printed products is realized in the process of printing multiple layers of two-dimensional laminated intralayer materials by the 3D printer. The reinforcement nozzle 110 includes a heating device (guiding tube 111 and heating tube 112), a pushing mechanism (pushing block 113 and clamping block 114) and cutting mechanism (cutting knife 115), such as figure 1 As shown, wherein, the heating tube 112 heats the guide tube 111, and the guide tube 111 can transfer heat to the reinfor...

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Abstract

The invention relates to an interlayer reinforcement technology for 3D printing of a fiber reinforced composite and belongs to the technical field of interlayer reinforcement technologies for 3D printing of continuous fiber reinforced thermoplastic resin matrix composites. 3D printing equipment involved in the interlayer reinforcement technology comprises at least two printing nozzles, namely a fiber reinforced thermoplastic resin printing nozzle (an in-plane nozzle) and an interlayer reinforcement nozzle. The interlayer reinforcement technology comprises the following working steps: firstly,printing certain layers of an in-plane material by using the in-plane nozzle till the thickness reaches 0.5 mm to 30 mm; secondly, according to the design space, implanting a thin bar into a multi-point position of the printed layered area by using the interlayer reinforcement nozzle so as to complete the one-layer reinforcement operation; and thirdly, repeating step 1 to step 2 so as to completethe multi-layer printing and reinforcement operation till a product is printed. The interlayer reinforcement technology provided by the invention has the beneficial effects that the cost is low; the degree of automation is high; and the weak interlayer performance of a 3D printing product can be greatly improved.

Description

technical field [0001] The invention relates to the field of 3D printing of fiber-reinforced composite materials, in particular to an interlayer reinforcement technology for 3D printing of continuous fiber-reinforced thermoplastic resin-based composite materials. Background technique [0002] 3D printing technology is an emerging technology in the field of rapid prototyping, which comprehensively applies new manufacturing processes in cutting-edge technology fields such as computer-aided design, polymer material science, and digital control. 3D printing technology omits the processing and manufacturing of product molds, greatly shortens the product development cycle in terms of time, and is not limited by the complexity of the shape of the parts, and is receiving more and more attention. [0003] In the early stage of the development of 3D printing technology, thermoplastic resin consumables that can be heated and melted are generally used as molding materials. The material ...

Claims

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Application Information

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IPC IPC(8): B29C64/112B29C64/20B29C64/30B33Y10/00B33Y30/00B33Y40/00
CPCB33Y10/00B33Y30/00B33Y40/00B29C64/112B29C64/20B29C64/30
Inventor 王晓旭刘海辉王怡扬
Owner TIANJIN POLYTECHNIC UNIV
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