Winding-pressing forming process and device of fiber-reinforced composite material

A composite material and fiber reinforced technology, applied in the field of fiber reinforced composite material wrapping molding process and device, can solve the problems of weak interlayer connection performance, poor mechanical performance, long manufacturing cycle, etc., and achieve good mechanical performance and short manufacturing cycle. , the effect of short production cycle

Pending Publication Date: 2018-08-07
泰安市中研复合材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above-mentioned deficiencies, an object of the present invention is to provide a fiber-reinforced composite material winding compression molding process, through continuous fiber composite material winding molding, to prepare a product preform with a rough apparent shape, and then wind the preform The molded body is placed in the high-precision molding cavity of the final product for molding, which solves the problems of poor mechanical properties, weak interlayer connection performance, long manufacturing cycle and complicated manufacturing caused by cutting fibers of traditional fiber reinforced composite materials. It has better mechanical properties and shorter production cycle

Method used

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  • Winding-pressing forming process and device of fiber-reinforced composite material
  • Winding-pressing forming process and device of fiber-reinforced composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A thermosetting fiber-reinforced composite material winding and pressing molding process includes the following steps:

[0050] 1. Feeding and spreading yarn: the fiber yarn shaft is fixedly placed on the creel, and the yarn is spread through the creel;

[0051] 2. Preheating, dipping, and spreading: preheat the fiber spreading yarn and enter the dipping device to fully dipping, put the thermoplastic resin pellets into the feed port of the extruder, and melt in the extruder before entering the dipping The device impregnates the die head and impregnates the fibers in the die head. The prepreg wire is formed through the outlet of the die head of the dipping device, and then the prepreg wire with smooth surface is formed by the setting device; the prepreg after setting is passed through the spreading roller Spread the yarn.

[0052] 3. Traction and winding: The prepreg wire or prepreg tape is drawn through the traction winding device, and the molten prepreg wire or prepreg tape ...

Embodiment 2

[0057] A thermoplastic fiber-reinforced composite material wrapping and molding process includes the following steps:

[0058] 1. Feeding and spreading yarn: the fiber yarn shaft is fixedly placed on the creel, and the yarn is spread through the creel;

[0059] 2. Preheating, dipping, and spreading: preheat the fiber spreading yarn and enter the dipping device to fully dipping, put the thermoplastic resin pellets into the feed port of the extruder, and melt in the extruder before entering the dipping The device impregnates the die head and impregnates the fibers in the die head. The prepreg wire is formed through the outlet of the die head of the dipping device, and then the prepreg wire with smooth surface is formed by the setting device; the prepreg after setting is passed through the spreading roller Spread the yarn.

[0060] 3. Traction and winding: The prepreg wire or prepreg tape is drawn through the traction winding device, and the molten prepreg wire or prepreg tape is passe...

Embodiment 3

[0067] A one-step fiber-reinforced thermoplastic composite material wrapping and forming device, such as figure 1 with figure 2 As shown, it includes: wire feeding machine 1, yarn spreading frame 2, preheating device 3, impregnating device 4, setting device 5, yarn spreading roller 6, winding traction device and molding device; the wire feeding machine 1 is placed at the forefront, and After that, the yarn spreading rack 2, the preheating device 3, the dipping device 4, the setting device 5, the yarn spreading roller 6, the winding traction device and the molding device are arranged in sequence. The dipping device 4 is composed of a single screw extruder and a die dipping die The dipping tank and dipping roller are arranged in the dipping die of the machine head, and the dipping roller is installed in the dipping tank. The winding traction device is composed of a hot air gun 7, an infrared thermometer 8, a pressure roller 9, a transmission shaft 10, a servo motor (not shown in ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a winding-pressing forming process and device of a fiber-reinforced composite material. The process comprises the steps: placing filaments, spreading yarns, preheating, dipping, drawing and winding. The forming process comprises the specific steps: fixedly placing a fiber-yarn shaft on a yarn frame, carrying out yarn spreading by a yarn spreading frame, leading the spread fiber yarn to enter a gum-dipping device after preheating, forming a prepreg wire by an outlet of a mold head of the gum-dipping device, then forming a sizing prepreg with smooth surface by a sizing device, drawing the sizing prepreg by a drawing and winding device, winding and sizing by a mold to obtain a pre-formed body, heating the pre-formed body to a needed temperature, pushing into a moldingcavity by a guide rail or a mechanical arm, pressurizing, curing and molding. The winding-pressing forming process and device disclosed by the invention have the beneficial effects that the characteristics of high specific strength and high specific rigidity of the composite material are furthest exerted by a mold-forming process, and the problems of poor mechanical property, weak interlayer connecting property, long manufacturing period and complex manufacture and the like caused by fiber cutting of the traditional fiber-reinforced composite material are solved, so that the application prospect is wide.

Description

Technical field [0001] The invention relates to the technical field of composite material sheet forming, in particular to a fiber-reinforced composite material winding and pressing forming process and device. Background technique [0002] With the rapid development of material technology, composite materials have the advantages of high specific strength and high specific stiffness, designable mechanical properties, excellent fatigue resistance, excellent shock absorption and corrosion resistance compared with metal materials. It is widely used in the internal equipment and load-bearing structure of airplanes and trains. [0003] The existing composite window frame manufacturing processes mainly include SMC compression molding and RTM molding with chopped fiber and thermosetting resin as raw materials. However, chopped fiber will cause the strength and rigidity of the laminate to decrease, stress concentration at the hole edge and edge effects will be It causes partial premature de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/32B29C70/34B29C70/54
CPCB29C70/32B29C70/345B29C70/347B29C70/54
Inventor 张博明李宏福王洋
Owner 泰安市中研复合材料科技有限公司
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