Support device for rotation and curing of composite material product with long and thin structure

Abstract

The invention provides a support device for rotation and curing of a composite material product with a long and thin structure. The support device comprises at least one group of support mechanism anda first sliding locking mechanism, the support mechanism is arranged below the composite material product and comprises at least one support roller; the roll shaft of the support roller is parallel with the axis of the composite material product; the roll surface of the support roller is tangent with the rotative surface of the composite material product; the first sliding locking mechanism is arranged below the support mechanism and is suitable for enabling the support mechanism to move and to be locked in the axial direction of the composite material product. The support device can providegood support for rotation and curing of the composite material product with a long and thin structure, so that deformation of the composite material product due to dead weight during the curing process is reduced, and the straightness and the curing quality of the composite material product are improved.

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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