Rotating hook line mechanism: The mechanism for completing the hook line action with a rotating hook line member, which is divided into:

Rotary hook hook mechanism: The rotary hook body in the lock stitch sewing machine is driven by the rotating mechanism, hooks the needle loop of the needle and wraps around the bobbin sleeve and the shuttle thread to form a lock stitch.

Rotary hook mechanism: In the single-line chain stitch sewing machine, a hook with a rhombic shape without a suture, a mechanism driven by a rotating mechanism, and a loop of a needle thread under the sewing material to form a single-line chain stitch .

Swing hook line mechanism: complete the hook line action mechanism with the swing hook line.

Shuttle hook mechanism: The shuttle body in the lock stitch sewing machine is driven by a semi-rotating mechanism, and the needle loop is hooked by the shuttle and the shuttle and its bobbin sleeve are interwoven with the shuttle thread to form a lock stitch. Agency.

Curved needle hook line mechanism: In the chain thread sewing machine, a hook line member with a threaded shape is used for reciprocating swing, and the thread on the needle or the line on the other hook line member is sewn to each other. , the mechanism that forms the chain stitch.

Wire hook hook line mechanism: In the single-line chain stitch sewing machine, a hook-shaped hook line without a suture is driven by a swing mechanism to drive a loop of the needle thread under the sewing material to form a single-line chain stitch. Agency.

Fork hook hook line mechanism: a hook line member with a fork at the end without a suture, which is driven by a swing mechanism to fork the sutures to form a chain stitch.