A precise and real-time controllable wire laying compaction device

Abstract

The invention discloses a precise real-time controllable fiber paving compaction device which is provided with a compaction roller driven by a servo motor and transmitted by a ball screw to move front and back. The compaction roller acts through a spring to achieve driven movement in the front-and-back direction. When carbon fibers are conveyed to the die surface through a carbon fiber composite material fiber paving head from the position below the compaction roller, the compaction roller is controlled to be in contact with the die surface, and presoaking yarns and a die are attacked and cured through the compaction roller. Compaction force of the compaction roller is obtained from spring deformation amount, a laser type displacement sensor is used for measuring the spring deformation amount, the spring deformation amount is fed back to a controller, control is achieved through a PID unit degeneration control method, the compaction servo motor is controlled to drive the ball screw to rotate, the spring compression amount is adjusted, and the compaction roller outputs constant compaction force. The precise real-time controllable fiber paving compaction device is simple in control manner, the machining cost is reduced, the compaction force suddenly-changed condition can be avoided, stress is more even, and precise real-time controllable fiber paving compaction device is suitable for carbon fiber paving at any angle.

Description

technical field [0001] The invention relates to the field of composite material molding, and integrates mechanics. Specifically, it is a compacting device that can be applied to an automatic laying head, which can compact the laid and formed carbon fiber prepreg, and accurately control the compaction force. control, which improves the quality of the placed material. Background technique [0002] Advanced Composite Materials (Advanced Composite Materials) has the advantages of high specific strength, high specific modulus, good fatigue resistance and corrosion resistance. It can not only reduce product weight and save costs, but also improve product performance. Ideal materials are used in military and The civil field has been widely used. For example, in the field of aviation, it is predicted that this proportion will reach 70%-80% by 2020. With the rapid development of national defense, the amount of composite materials is increasing year by year. As an important method f...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the compacting mechanism of the existing fiber laying equipment affects the laying effect due to laying complex curved surfaces, and the stability of the laying quality of the carbon fiber automatic laying equipment is poor, the porosity is often increased due to uneven compaction force, which is of great importance to the fiber laying equipment. The damage caused by the tow affects the laying quality, and a compaction device that can be precisely controlled in real time is proposed

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