Control bobbin holder for thread winding unit

JP7877326B2Active Publication Date: 2026-06-22COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
COMMISSARIAT A LENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Filing Date
2021-12-24
Publication Date
2026-06-22

AI Technical Summary

Technical Problem

Existing winding systems fail to maintain constant axial tension on stranded wire during unwinding, leading to twist formation and manufacturing defects, particularly when using pre-impregnated fibers, which affects the geometric shape and mechanical properties of composite materials.

Method used

A bobbin holder device with translational and rotational movement control mechanisms, including a bobbin holder that rotates around its axis and is translationally moved along an axis perpendicular to the plate, guided by a connecting component, and equipped with sensors to maintain constant axial position of the strands, preventing twist formation.

Benefits of technology

The solution ensures consistent axial position of strands during unwinding, preventing twist and maintaining the geometric shape and mechanical properties of the composite materials, enhancing manufacturing precision and reducing defects.

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Patent Text Reader

Abstract

The present document relates to a device (28) for unwinding a stranded wire (37) from a bobbin (31), the device (28) comprising a plate (30) supporting at least one bobbin holder (32), the bobbin holder (32) extending along an axis (A) substantially perpendicular to the plate (30) and intended to receive a bobbin (31) capable of rotating around the axis of the bobbin holder (32), means (34) for translationally moving the bobbin along the axis of the bobbin holder (32), and means (41) for controlling the moving means (34) configured to maintain the stranded wire (37) leaving the bobbin (31) in a substantially constant position along the axis (A) of the bobbin holder (32).
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Citation Information

Patent Citations

  • JP1983109227A

  • JP1991239420A

  • JP2012232808A

  • JP2014514974A

  • US20180037433A1