System for producing strapped rolls of wire screening

A system for producing strapped rolls of wire screening or mesh having

• a windup device (3) including a driven mandrel (4);
• means (1, 7;
• P.sub.1) for delivering wire screening or mesh to the windup device, include guide means (5, 6) for feeding the wire screening or mesh on the mandrel;
• a stripper device (23) axially movable with respect to the mandrel for stripping wound-up, or rolled-up wire screening or mesh from the mandrel (4);
• a plurality of gripper arm units (18, 19, 20, 21), each including
• movable gripper arms (19, 20, 21), and
• support means (18) for movably supporting the movable gripper arms;
• a gripper carriage means (16, 17) for simultaneously moving said gripper arm units with respect to said mandrel (4), said gripper carriage means being movable between a first position (W), in which the gripper arm units engage the wound-up roll of wire screening or mesh on the winding device and a second position (A) spaced from the first position (W) by a distance exceeding the length of the roll of wire screening or mesh in the direction of the windup mandrel axis (x--x), and remote from the wind-up mandrel (4), each of said gripper arm units being mounted on said gripper carriage means for independent movement relative to the other of said gripper arm units;
• and
• a strapping unit, said strapping unit including
• a strapping frame (28) adjustable at right angles with respect to the (axis x--x) of the winding mandrel (4) and
• a strapping frame carriage means (26) for moving said strapping frame relative to said axis of said mandrel and guide means (25), supporting the strapping frame carriage means, the strapping frame carriage means supporting the strapping frame (28) for movement parallel with respect to the axis (x--x) of the windup mandrel (4) to freely selectable strapping positions axially on the roll of wound wire screening of mesh;
• and
• wherein the gripper arms (19, 20, 21) of at least one of said gripper arm units are pivotably mounted on the support means (18) for movement towards and away from the roll of wire screening or mesh in a controlled manner to permit, selectively, gripping of the wire screening or mesh roll by the gripper arms and passage of the strapping frame carriage means (26) and the strapping frame (28) thereon past said at least one gripper arm unit.