Fiber placement press roller mechanism capable of adjusting fiber prepreg tape and press roller wrap angle

Abstract

The invention discloses a fiber placement press roller mechanism capable of adjusting a fiber prepreg tape and a press roller wrap angle, which is applied to the fiber placement manufacture field of resin matrix composite components. The mechanism disclosed by the invention mainly comprises a guide wheel (6), a rolling wheel (5), a flexible press roller (1), a limit bolt (7), and a driving element for the device, namely a cylinder (8). According to the mechanism, the rigid guide wheel (6) is arranged on the bracket of the flexible press roller (1) through a four-bar mechanism; in the placement process, after the flexible press roller is pressed down, the guide wheel is pressed down under the driving of the cylinder and supported by the rolling wheel (5), so that the guide wheel is cooperated with the flexible press roller (1); and the limit bolt (7) is used for limiting the motion range of the four-bar mechanism. An inclined angle between a fiber prepreg tape (2) and the tangential plane of the surface of a core mould (3) is adjusted by the guide wheel (6) before rolling, so that a contact wrap angle between the fiber prepreg tape and the flexible press roller (1) is reduced, the bad influences (such as cutting slippage caused by dragging, poor placement cohesiveness and the like) on the fiber prepreg tape from the flexible press roller (1) are relieved in the placement process, therefore the equipment reliability is improved; moreover, the mechanism has the advantages of simple structure, convenience for use and the like.

Description

Technical field: [0001] The patent of the invention relates to the field of resin-based composite material manufacturing, which is used in fiber laying equipment, and specifically relates to a fiber laying roller mechanism that can adjust the wrapping angle between the fiber prepreg tape and the pressing roller. Background technique: [0002] The fiber placement device is mainly used in the manufacturing of aerospace, shipbuilding, automobiles and other industrial fields. The manufactured resin-based fiber-reinforced composite products have high specific strength, high specific modulus, corrosion resistance, fatigue resistance, creep resistance, A series of advantages such as electrical conductivity, thermal conductivity and small thermal expansion coefficient. [0003] At present, most of the composite material components are manufactured by the fiber laying process, that is, the fiber prepreg tape is laid layer by layer on the surface of the mandrel, and after several laye...

AI Technical Summary

Problems solved by technology

Factors such as radial deformation and moving speed of the flexible pressure roller (1), adhesion and friction with the fiber prepreg tape (2) will cause the flexible pressure roller (1) to produce a fiber prepreg tape (2) along the core mold ( 3) The drag force in the direction of the tangential plane, when the force is too large, the fiber prepreg tape (2) that has been laid (section AB) will produce shear slip or cause poor bonding performance, thus destroying the prepreg tape. Molded parts, reducing reliability of fiber placement equipment

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