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A method for detecting the stiffness of automatic laying prepreg

A technology of automatic wire laying and detection method, applied in non-electric variable control, simultaneous control of multiple variables, instruments, etc., can solve the problems of detecting the performance of prepreg tow, cannot be directly applied, and increase the test cost, and achieve detection Fast, intuitive results and easy-to-use effects

Active Publication Date: 2021-09-03
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing automatic wire laying machine is expensive, complex in structure and requires multiple people to operate, which greatly increases the test cost
In addition, the existing laying test platform is mainly aimed at wider prepreg tapes, which cannot be directly applied to test the performance of prepreg tows

Method used

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  • A method for detecting the stiffness of automatic laying prepreg
  • A method for detecting the stiffness of automatic laying prepreg
  • A method for detecting the stiffness of automatic laying prepreg

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This example discloses an automatic paving prepreg constant detection method, and specifically includes the following steps:

[0040] S1, from the cold storage of 1000 mm long prepreg wire, place the prepreg wire in the constant temperature and humidity test chamber;

[0041] S2, after 60min, the prepreg silk beam is removed from the constant temperature and humidity test chamber, and the three-piece length of the three-piece length is 60 mm, and the excess material is re-placed back to the test chamber;

[0042] S3, remove the two prepreg yovings on the automatic paving test platform, adjust the position of the two slice buttons to completely cover the prepreg tow;

[0043] S4, the placing pressure of the test platform is 100 N, the release speed is 10 m / min, the release temperature is 35 ° C, the automatic paving test platform is activated, and two prepreg wire is bonded;

[0044] S5, placed on the prepreg stack formed in step S4, which also ensures that the wire beam i...

Embodiment 2

[0050] This example discloses an automatic paving test platform for realizing the paving fitting of the prepreg tow, referring to the accompanying drawings Figure 1 - Figure 3 The automatic paving test platform mainly includes a base 1, an SR80 double-wire rail ribbar slide 2, a laying platform 3, a placing pressure control unit 4, a laying temperature control unit, and a PLC controller; further, The two-wire rail roller slide 2 includes a lead screw support plate 21, a motor support plate 22, a servo motor 23, a ball screw 24, a working platform 25, and a wire rail 26, a lead screw support plate 21, a motor support plate 22, and a motor support plate 22. The line rail 26 is disposed on the base 1, and the finite-up switch is provided on both ends of the wire rail 26, which is the first limit switch and the second limit switch, and the two limit switches are connected to the PLC controller, the limit switch. The entire working platform and the spreading platform are separated from...

Embodiment 3

[0055] This example discloses a control method of an automatic paving test platform, and the entire control process includes a paving pressure closed loop control, a laying temperature closed loop control, and a lapse speed closed loop control. When the automatic paving test platform is activated, people The machine interface first transmits the electric cylinder 41 and the two-wire rail ribs slide 2 zero command to the PLC controller, and the PLC controller sends the zero command to the electric cylinder driver and the servo motor driver, each driver receives the zero command. And perform a zero operation, the entire process determines whether the electric cylinder 41 and the two-wire pulling bead bar slide 2 are returned by the corresponding limit switch.

[0056] In the present embodiment, the placing pressure control and the temperature control are simultaneously performed simultaneously, specific:

[0057] Paving pressure closed loop control:

[0058] The user first sets the ...

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PUM

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Abstract

The invention relates to the technical field of automatic laying of composite materials, and discloses a method for detecting the stiffness of automatic laying prepregs. The method measures the maximum bending force of multi-layer prepregs through a three-point bending test, and stiffens the tow The small value of degree is amplified, which reduces the detection error and ensures the measurement accuracy. Compared with the existing method of inspecting the stiffness of prepreg tow by using the drape method, the detection speed is faster and the result is more intuitive.

Description

Technical field [0001] The present invention relates to the field of automatic spreading techniques of composite materials, and more particularly to an automatic paving prepreg hard alaid detection method. Background technique [0002] The automatic paving process is a low-cost, automated molding manufacturing process, which is usually applied to the manufacture of large curvature composite materials such as the aircraft fuselage, S-type airway. During the release process, the prepreg silk beam viscosity, hard atrial and joint strength have a great influence on the final quality of the paving product. If the pre-immersion tie is high or too low, it is difficult to smoothly fit between adjacent layers during the laying, resulting in a laying layer to generate a bridge in the mold curved region, and reduce the quality of the final paving member. [0003] In order to ensure the quality of the paving member, on the one hand, it is necessary to detect its hard atrial before the wire b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D27/02
CPCG05D27/02
Inventor 缑建杰杨扬张川邓晓春陈代鑫徐龙周沈周宇帆
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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