PULLING DRUM OF DRAWING BENCH Russian patent published in 2005 - IPC

FIELD: wire production by drawing, possibly designs of drawing benches.

SUBSTANCE: pulling drum of drawing bench rotatably mounted in axle and having mechanism for automatically clamping wire end has on one end portion of cylindrical surface of drum annular bead and on other end portion of drum it has annular stepped shoulder. Clamping mechanism includes pair of rings successively mounted on step of shoulder. Inner ring is mounted with possibility of motion along step of shoulder and it is provided with drive unit for rotating it relative to outer ring rigidly mounted in direction opposite relative to rotation direction of drum. Said rings are spring-loaded for providing their mutual contact along end inclined protrusions and recesses. At axial movement of inner ring caused by its rotation it is formed annular clamping space between flat end surface of inner ring and end surface of shoulder.

EFFECT: improved design not needing fixation of drum in predetermined angular position for introducing wire into clamping space, possibility for clamping/unclamping wire at rotation of drum.

4 cl, 3 dwg