A support device for rotary curing of composite material products with slender structure

Abstract

The invention provides a support device for rotating and solidifying an elongated structure composite material product, comprising: at least one set of support mechanisms arranged below the composite material product, the support mechanism comprising at least one support roller; the roller shaft of the support roller and the composite material product The axis of the support roller is parallel to the axis of rotation of the support roller, and the roller surface of the support roller is tangent to the revolving surface of the composite material product; the first sliding locking mechanism, located below the support mechanism, is suitable for the support mechanism to move along the axial direction of the composite material product and be locked. . The support device for rotating and curing the elongated structure composite material product of the present invention can provide good support for the rotation curing of the elongated structure composite material product, reduce the deformation of the elongated structure composite material product due to its own weight during the curing process, and improve the Product straightness and curing quality.

Description

technical field [0001] The invention belongs to the technical field of production auxiliary devices for composite material products, and in particular relates to a support device for rotary curing of composite material products with elongated structures. Background technique [0002] Fiber-reinforced resin-based composite products have gradually become one of the leading materials in the 21st century due to their low density and high strength. They are used in many fields such as aerospace, automobiles, chemicals, medicine, and sports equipment. Fiber-reinforced resin-based composite materials are obtained by impregnating resin matrix materials in fiber-reinforced materials and curing them. Composite products with a slender structure refer to slender products whose axial dimension is much larger than the radial dimension. The slender structural products are mostly prepared by a fiber winding process. The fiber winding process is based on continuous fibers impregnated with re...

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Problems solved by technology

Although the device can effectively solidify the resin glue during the rotation process, according to the deflection calculation formula of simply supported beams, when the linear density μ and elastic modulus E of the cylindrical mandrel are constant, the deformation amount ε and length of the cylindrical mandrel under its own weight L 4 Proportional to the diameter d 4 Inversely proportional, therefore, within the design requirements of product straightness, the length and diameter of the mandrel during the curing process should meet a certain proportional relationship. After the length of the mandrel exceeds the reasonable length of the proportional relationship, it will not be able to meet the straightness of the product, affecting The curing quality of composite products; on the other hand, in the preparation, the resin matrix material needs to undergo a rotation curing process from liquid to solid, that is, the irreversible chemical crosslinking reaction of the resin system makes the fiber and resin closely connected to form a composite material, and the curing process It has a direct impact on the final molding of composite products. Therefore, for composite products with slender structures, because the axial dimension is too long, it is easy to produce bending deformation in the axial direction during the process of preparing products by filament winding technology. Now Some devices cannot prevent the deformation of the mandrel or the product due to the influence of its own weight during the rotation curing process, and cannot maintain the straightness of the rotation curing of the slender structural composite product, so the straightness of the obtained product cannot be guaranteed

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