Pultrusion molding device for multi-layer structural product

Abstract

The invention relates to a pultrusion molding device for a multi-layer structural product, which comprises a groove tool comprising grooves with the same inner wall interval. The grooves thereon are at least provided with a first die and a second die, the first die thereon is provided with a first molding through hole used for molding the inner layer structure of the multi-layer structural product, the second die thereon is provided with a second molding through hole used for molding the outer layer structure of the multi-layer structural product, and the first molding through hole and the second molding through hole are arranged coaxially. By the pultrusion molding device for a multi-layer structural product structured by the first die and the second die arranged on the grooves of the groove tool and by using the structural features that the first molding through hole of the first die and the second molding through hole of the second mold are coaxial, the device is capable of realizing the purpose that the geometric centers of the sections of the manufactured multi-layer structural products are coaxial so as to obviously improve the performances, such as the tensile strength, the elasticity modulus and the like, of the multi-layer structural product.

Description

technical field [0001] The invention relates to the technical field of material processing, in particular to a pultrusion molding device for multi-layer structural products. Background technique [0002] In the field of engineering, multi-layer structure products are used in many occasions. Usually, this multi-layer structure product can be a multi-layer structure formed by different fibers through a pultrusion process. In order to improve the tensile strength and The elastic modulus and other properties require that each layer has the same shape and the geometric centerline of the section is coaxial. In the prior art, a single mold is commonly used to form multilayer structural products. Since different fibers after dipping will slip at the boundary when entering the mold, it is difficult to meet the requirements of the shape of the interface between two adjacent layers. Stability, which in turn leads to the difference in the shape of each layer structure; in order to solv...

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Problems solved by technology

In the prior art, a single mold is commonly used to form multilayer structural products. Since different fibers after dipping will slip at the boundary when entering the mold, it is difficult to meet the requirements of the shape of the interface between two adjacent layers. Stability, which in turn leads to the difference in the shape of each layer structure; in order to solve the defect that it is difficult to meet the same shape of each layer structure by using a single mold to form multi-layer structure products, the original equipment is transformed and multiple molds are used to form multi-layer structures The manufacturing process of the product, although it meets the requirements of the same shape of each layer structure, it is difficult to ensure that the geometric center of the cross-section of the multi-layer structure product remains coaxial, resulting in the eccentric coating of each layer of the formed multi-layer structure product, thus The tensile strength and elastic modulus of the multi-layer structure product are reduced, and the quality is unreliable. At the same time, there are relatively potential safety hazards in the project of using this multi-layer structure product whose cross-sectional geometric centerline is different from the axis.

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