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A self-threading stitching device for joining uncured composite laminates which comprises a vertically mounted needle shaft adapted for reciprocal motion, a thread feeding means operating synchronously with the needle shaft and self-threading needle means adapted to pick up the thread from the threa

A self-threading stitching device for joining uncured composite laminates which comprises a vertically mounted needle shaft adapted for reciprocal motion, a thread feeding means operating synchronously with the needle shaft and self-threading needle means adapted to pick up the thread from the thread feeding means and carry the thread through uncured composite laminate being penetrated by the needle and release the thread in the laminate as the needle withdraws therefrom.

대표청구항 ▼

A self-threading stitching device for joining uncured composite laminates comprising a machine platform, a vertically reciprocating needle shaft mounted on said platform, means for imparting reciprocating motion to said needle shaft, a thread feeding means operating synchronously with the needle sha

A self-threading stitching device for joining uncured composite laminates comprising a machine platform, a vertically reciprocating needle shaft mounted on said platform, means for imparting reciprocating motion to said needle shaft, a thread feeding means operating synchronously with the needle shaft, means for synchronizing the movement of said thread feeding means with the movement of said shaft and self-threading needle means adapted to pick up thread on its down-stroke and to carry said thread through said uncured composite laminate as said needle means penetrates said laminate, said needle means being further adapted to release said thread in said laminate as the needle shaft begins its upward stroke so that a thread loop is left protruding from that side of the composite laminate which is the opposite side from needle entry.