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Additive manufacturing device

An additive manufacturing and thermosetting technology, applied in the field of additive manufacturing devices, continuous fiber reinforced resin prepreg additive manufacturing devices, can solve the problems of aggravating the deformation of parts, reducing the overall strength and warping of parts, and achieving The effect of reducing glue content, improving mechanical properties and temperature resistance, and narrowing the limit range

Active Publication Date: 2018-11-02
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2) The problem of interfacial stress. The thermosetting resin undergoes a chemical-physical reaction when it is heated on the laying interface. The volume of the material is not only affected by heat, but also greatly changed by the influence of molecular chemical reactions. Therefore, it gathers on the interface. Larger stress increases the probability of deformation and warpage of the part, and reduces the overall strength of the part

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0054] The product is prepared using 12K carbon fiber reinforced medium temperature epoxy resin prepreg tape.

[0055] This example uses as figure 1 In the additive manufacturing device shown, the temperature parameters are set as 100°C in the conveying pipe, 160°C in the pre-pressing roller, and 90°C in the post-processing roller.

[0056] After using the device of the present invention, from design directly to production test, the time for mold preparation and conventional molding preparation is saved, about half of the original time is used, and the cost is about one-fifth of the original. The properties of the produced parts are better than conventional methods.

Embodiment 2

[0058] The product is prepared using 12K carbon fiber reinforced medium temperature epoxy resin prepreg tape.

[0059] This example uses as figure 2 In the additive manufacturing device shown, the temperature parameters are set as follows: the temperature in the conveying pipe is set to 100°C, the temperature of the pre-pressing roller is 180°C, the temperature of the second heat source is 180°C, and the temperature of the post-processing roller is 80°C.

[0060] After using the device of the present invention, from design directly to production test, the time for mold preparation and conventional molding preparation is saved, about one-third of the original time is used, and the cost is about one-fourth of the original. The properties of the produced parts are better than conventional methods.

[0061]For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe the The spati...

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Abstract

The invention provides an additive manufacturing device. The additive manufacturing device comprises a movable support, a conveying roller, a transverse rod, a conveying pipe and a prepressing roller,wherein the conveying roller is fixed to the support and used for conveying a continuous fiber-reinforced thermosetting resin prepreg tape; the transverse rod is horizontally arranged on the supportand placed below the conveying roller; the conveying pipe is a pipe with the two ends open, is fixed to the transverse rod and is perpendicular to the transverse rod, and a first heat source is arranged in the conveying pipe and used for preheating the prepreg tape passing through the conveying pipe and a to-be-laid pre-laid face of the prepreg tape at the same time; and the prepressing roller isconnected with the transverse rod and is close to an opening in the lower end of the conveying pipe, and the prepressing roller presses the pre-laid face and is used for molding the preheated prepregtape onto the preheated pre-laid face. The device is applicable to additive manufacturing of continuous fiber-reinforced thermosetting prepreg, and the technical problem that in the prior art, additive manufacturing with the continuous fiber-reinforced thermosetting prepreg as a raw material is limited can be solved.

Description

technical field [0001] The invention relates to the technical field of composite material manufacturing, in particular to an additive manufacturing device, in particular to a device suitable for additive manufacturing of continuous fiber reinforced resin prepregs. Background technique [0002] The additive technology of using continuous fiber to reinforce 3D printing wire is a new method proposed based on the original thermoplastic pure resin wire printing technology in order to increase the mechanical strength and use function of the part; it absorbs the common printing technology The advantages of fast design test, rapid prototyping, simple preparation, low cost and green manufacturing, etc., can also apply the excellent mechanical properties and directional layup design of continuous fibers to load-bearing parts or sub-load-bearing parts, which is a new development for additive manufacturing technology. Wide application in military and civilian fields such as aerospace, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/147B29C64/218B33Y30/00
CPCB29C64/147B29C64/218B33Y30/00
Inventor 毕向军张辰威
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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