Ksl Keilmann Sondermaschinenbau Gmbh

Pfaff Industriesysteme Und Maschinen Gmbh

Robert Horst Keilmann

Berthold Becker

Harald Kallenbach

Guido Jaeger

Jörg Rippert

Ernst Biermann

Thomas Markfort

Friedrich Rau

A sewing system serves for sewing seams which the multi-dimensionally in space. A needle-bar upper part of a sewing head is mounted so as to be pivotable in a driven manner about a needle-bar longitudinal axis. A gripper lower part is mounted so as to be pivotable in a driven manner, and in a manner synchronous with the needle-bar upper part, about the needle-bar longitudinal axis, in the sewing-head lower part. Motor components for driving the movement of a needle bar, for pivoting the needle-bar upper part, for driving a gripper in a manner synchronous with the needle bar and for pivoting the gripper lower part are disposed outside the needle-bar upper part and outside the gripper lower part. Parts to be sewn that are topographically non-uniform are also rendered accessible.

Sewing system

A double chain stitch sewing machine includes an upper section () and a lower section (), which can be displaced synchronously parallel to a sewing product plane () The upper section includes a needle rod () holding a needle (), and a drive () for displacing the needle rod perpendicularly to the sewing product plane. The lower section has a hook (), which reciprocates in a plane parallel to the displacement direction of the needle rod and cooperates with the needle to form the stitch At least one needle stabilizer (or) in the lower section can be displaced synchronously with the needle rod and hook displacements between a first needle position close to the needle path, in which the needle stabilizer supports the needle against deflection transverse to the displacement path of the hook ,and a second position offset from the needle path.

Double chain stitch sewing machine

A sewing machine including a sewing machine upper portion with a frame, a needle rod and a sewing foot rod, which rods are guided in the frame for back and forth movement parallel to one another, a rack connected with each of the rods and which racks are driven by separate pinions driven by separate electric motors. These motors and possibly other motors for positioning other parts of the sewing machine are separately controlled independently of one another by a program controlled control unit so that the movement of needle road and of the sewing foot rod can be independently program controlled during a sewing procedure.

Sewing machine

A blind stitch sewing mechanism includes a sewing head ( ) with a carrier ( ), a needle shaft ( ) rotatably supported on the carrier ( ), which needle shaft is connected with a needle holder ( ) radially extending from the needle shaft for holding an arc shaped needle curved about the axis ( ) of the needle shaft ( ), a needle drive ( ) for moving the needle ( ) back and forth, a loop catcher ( ) moveably supported on the carrier ( ) for receiving a thread loop formed by the withdrawal of the needle from the work material, a catcher drive for moving the loop catcher ( ) in timewise coordination with the movement of the needle ( ), and a device ( ) creating a relative movement between the sewing head ( ) and the work material, the loop catcher ( ) being formed for a back and forth movement perpendicular to the movement path of the needle ( ) and the device ( ) creating a relative movement between the sewing head ( ) and the work material being so formed that the created sewn seam runs at least nearly in the direction of the movement path of the arc shaped needle ( ).

Blind stitch sewing mechanism

A sewing machine for producing a seam along a three-dimensional bent curve including first and second carriers for supporting a needle system and a looper system for translation along and rotation about three coordinate axes and first control means for synchronizing needle and looper drives and second control means for operating positioning devices for positioning the needle system and looper system to provide a differential spatial relationship between the needle system and the looper system before and after the sewing operation and for synchronizing the positioning devices.

Growing community of inventors

Lorsch, Germany

Robert Horst Keilmann