Filament winding molding machine

The filament winding molding machine addresses the challenge of removing large-diameter FRP molded bodies by employing a divisible mandrel design with a rotating and sliding mechanism, ensuring seamless removal and enhanced production efficiency.

JP7869413B1Active Publication Date: 2026-06-02MARUEI SANGYO
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
MARUEI SANGYO
Filing Date
2026-01-05
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Conventional filament winding molding machines face difficulties in removing large-diameter FRP molded bodies from the mandrel due to increased resistance, requiring the molded body to be divided and reassembled, which is time-consuming and results in seams.

Method used

A filament winding molding machine with a mandrel divisible into two molds by an inclined dividing surface, utilizing a cantilevered rotating mechanism and sliding mechanism to facilitate easy removal of the FRP molded body without cutting, aided by a protective material to prevent resin entry and stabilize the mold.

Benefits of technology

Enables efficient, labor-saving removal of large-diameter FRP molded bodies from the mandrel without division, improving production efficiency and mold quality by preventing seams and resin gaps.

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Abstract

This invention provides a filament winding molding machine that offers excellent labor-saving and mass-production capabilities, allowing even large-diameter FRP molded bodies to be easily removed from the mandrel without being divided. [Solution] The molding machine body 14 of a filament winding molding machine, which manufactures a cylindrical FRP molded body 38 by winding resin-impregnated roving around a rotating mandrel 11, comprises a mandrel 11 that is formed in a cylindrical shape and can be divided into a first mold 23 and a second mold 24 by a dividing surface 22 inclined with respect to the axis 21, a cantilevered rotating mechanism 25 positioned on one side of the axial direction of the mandrel 11 to rotate the mandrel 11, and a sliding mechanism 34 that slides the second mold 24 along the dividing surface 22 to the other side of the axial direction of the mandrel 11 relative to the first mold 23.
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