CN-114801274-B - Manufacturing method of steel bar rod body

Abstract

The invention provides a method for manufacturing a reinforcing bar body, wherein a thermoplastic resin material is fully impregnated into a reinforcing fiber material and integrated with the reinforcing fiber material to exert sufficient strength. A method for manufacturing a reinforced bar body (Sc) which is formed by impregnating basalt fibers (Fb) with polypropylene (PP) resin and integrating the basalt fibers, wherein the basalt fibers (Fb) in a non-flat bundle shape are passed through a storage tank (2) in which a liquid thermoplastic resin material is stored, the passed basalt fibers (Fb) in a non-flat bundle shape are pressed into a flat state in the storage tank (2), the PP resin is impregnated between the basalt fibers (Fb), and the basalt fibers (Fb) in a flat shape impregnated with the PP resin are reamed again to form a non-flat bundle shape.

Inventors

• NAKAGAWA HIROSHIGE
• NAKAGAWA TAKAAKI

Assignees

• 中川产业株式会社

Dates

Publication Date

20260512

Application Date

20220127

Priority Date

20210127

Claims (6)

1. 1. A method for manufacturing a reinforcing bar body, characterized in that the reinforcing bar body is manufactured by impregnating a reinforcing fiber material with a thermoplastic resin material and integrating the reinforcing fiber material, The method comprises passing a non-flat bundle-shaped reinforcing fiber material through a storage tank in which a molten thermoplastic resin material is stored, pressing the passed non-flat bundle-shaped reinforcing fiber material into a flat state in the storage tank, impregnating the thermoplastic resin material between the reinforcing fiber materials, bundling the flat reinforcing fiber material impregnated with the thermoplastic resin material again into a non-flat bundle shape to form a raw rod body, wrapping the outer periphery of the raw rod body before cooling after bundling with a predetermined fastening force by a wrapping layer made of another thermoplastic resin material, and maintaining the entire cross section of the raw rod body in a nearly circular shape by the predetermined fastening force together with the outer periphery Zhou Mige of the raw rod body.
2. 2. The method of manufacturing a bar body according to claim 1, wherein, A plurality of rod bodies are transversely arranged in the accumulation groove, and the bundle-shaped reinforcing fiber material is suspended and passed between the rod bodies in a pressure-bonding state, so that the reinforcing fiber material is pressed and flattened into a flat state.
3. 3. The method of manufacturing a bar body according to claim 1, wherein, The coating layer is formed by winding a film material of a predetermined width around the outer periphery of the raw bar body before cooling with a predetermined tightening force and coating the film material with the other thermoplastic resin material.
4. 4. The method of manufacturing a bar body according to claim 1, wherein, Before the coating by the coating layer, an elongated body extending in the longitudinal direction of the reinforcing fiber material and having an increased tensile strength is integrally welded to at least one portion of the outer periphery of the raw rod body.
5. 5. The method of manufacturing a bar body according to claim 4, wherein, As the long body, a filament is used.
6. 6. The method for manufacturing a reinforcing bar according to any one of claims 1 to 5, wherein, A connecting tool is welded to the end of the raw rod body covered by the covering layer.

Description

Manufacturing method of steel bar rod body Technical Field The present invention relates to a method for manufacturing a reinforcing bar body which can be suitably used for reinforcing concrete or the like. Background As such a reinforcing bar body, a reinforcing bar body using basalt fiber, which is rust-free and can maintain the strength of concrete for a long period of time, has been attracting attention as a replacement for the conventional iron reinforcing bar body. As such a reinforcing bar body, for example, as shown in patent document 1, a reinforcing bar body having a structure in which basalt fiber bundles are used as a core material and the surroundings thereof are covered with a thermoplastic resin layer having a predetermined thickness is proposed. As a method for forming a resin layer around a core material, conventionally, as shown in patent document 1, there is often used an immersion method in which a core material is passed through a molten resin or an emulsion. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2012-251378 Disclosure of Invention Problems to be solved by the invention However, in the case of using the impregnation method, if the thermoplastic resin material is not sufficiently impregnated with basalt fibers as the reinforcing fiber material, there is a problem in that a reinforcing bar body having sufficient strength cannot be obtained. Accordingly, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method for manufacturing a reinforcing bar body, in which a thermoplastic resin material is sufficiently impregnated into and integrated with a reinforcing fiber material to exert sufficient strength. Means for solving the problems In order to achieve the above object, in the first invention, a method for manufacturing a reinforcing bar body (Sc) formed by impregnating a thermoplastic resin material into reinforcing fiber materials (Fb) and integrating the reinforcing bar body, wherein the reinforcing fiber materials (Fb) in a non-flat bundle shape are passed through a storage tank (2) in which a liquid thermoplastic resin material is stored, the passed reinforcing fiber materials (Fb) in a non-flat bundle shape are pressed into a flat state in the storage tank (2), the thermoplastic resin material is impregnated between the reinforcing fiber materials (Fb), and the flat reinforcing fiber materials (Fb) impregnated with the thermoplastic resin material are again formed into a non-flat bundle shape by collecting the reinforcing fiber materials (Fb). In the first aspect of the present invention, the reinforcing fiber material in the form of bundles is flattened in the accumulation tank, and the thermoplastic resin material sufficiently permeates into the reinforcing fiber material, so that the reinforcing fiber material is re-gathered and formed into a bundle that is not flattened, thereby providing a reinforcing bar body with sufficient strength. In the second invention, a plurality of rods (21-23) are transversely arranged in the accumulation groove (2), and the non-flat bundle-shaped reinforcing fiber material (Fb) is suspended and passed between the rods (21-23) in a pressure-bonding state, so that the reinforcing fiber material (Fb) is pressed and flattened into a flat state. In the second aspect of the present invention, the reinforcing fiber material having a simple structure and a bundle shape can be flattened. In the third aspect of the present invention, the outer periphery of the reinforcing fiber material (St) after the completion of the beam forming is covered with a predetermined fastening force by another thermoplastic resin material. In the third aspect of the present invention, the outer periphery of the reinforcing fiber material is covered with the other thermoplastic resin material, and therefore, the feel is good, the chemical resistance is also excellent, and the strength of the reinforcing fiber material is greatly increased because the outer periphery of the reinforcing fiber material is covered with a predetermined fastening force. In the fourth invention, the outer periphery of the reinforcing fiber material (Fb) after the above-mentioned beam forming is wound with a predetermined fastening force and covered with a film material (Lh) of a predetermined width of the above-mentioned other thermoplastic resin material. In the fourth aspect of the present invention, since the reinforcing fiber material after the shaping by winding the film material with a predetermined tightening force, the outer surface thereof can be formed into a shape having a cross section close to a beautiful circular shape, and the strength of the reinforcing fiber material can be greatly increased by winding the film material with a predetermined tightening force. In the fifth invention, a long body (4) which extends in the longitudinal direction of the rein