Sewing head

The composite sewing head with parallel needle motion and real-time thickness compensation addresses support and stitching irregularities, enhancing efficiency and consistency in sewing composite materials.

WO2026096942A1 Publication Date: 2026-05-07INTEVA PRODUCTS LLC
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Patent Information

Application Number
PCT/US2025/053598
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-05-13
Filing Date
2025-10-31
Publication Date
2026-05-07

AI Technical Summary

Technical Problem

Existing sewing heads struggle with supporting composite materials during stitching prior to curing, leading to issues like material displacement, increased processing time, and stitching irregularities due to inadequate needle power, needle breakage, and inconsistent thread tension.

Method used

A composite sewing head with a needle and sleeve design, featuring parallel needle motion and adjustable needle angles, along with real-time thickness compensation using sensors, and a catcher needle sleeve to prevent hook engagement with laminate fibers, enhancing sewing speed and consistency.

Benefits of technology

The solution provides stable support for composite materials, reduces processing time, minimizes material displacement, and ensures consistent stitching quality by maintaining needle penetration depth and thread tension, thereby improving the efficiency and reliability of the sewing process.

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Abstract

A composite sewing head, including; a feed needle bar configured to drive a feed needle; and a catcher needle bar configured to drive a catcher needle, wherein the feed needle bar and the catcher needle bar are configured to have linear and rotary motion when a stitch is created by the composite sewing head.
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