Method of winding logs with different sheet counts

A method of winding a continuous web of material onto hollow cores to form individual logs, the logs having different lengths of the material wound thereon, the method comprising the steps of:

• providing a rotatably driven turret assembly supporting a plurality of rotatably driven mandrels for winding the web of material onto cores supported on the mandrels;
• providing a rotatably driven bedroll for transferring the web of material to the rotatably driven turret assembly;
• rotating the bedroll;
• rotating the turret assembly to carry the mandrels in a closed path;
• winding a first length of the material onto cores supported on the mandrels to form logs having the first length of the material;
• changing the speed of rotation of the turret assembly relative to the speed of rotation of the bedroll while rotating the turret assembly;
• and
• winding a second length of material onto cores supported on the mandrels to form logs having the second length of material, wherein the second length is different from the first length.

A method of winding a continuous web of material onto hollow cores to form individual logs, the logs having different lengths of the material wound thereon, the method comprising the steps of:

• providing at least two independently driven components, the position of each independently driven component being mechanically decoupled from the positions of the other independently driven components, wherein at least one of the independently driven components comprises a rotatably driven turret assembly supporting a plurality of rotatably driven mandrels for winding the logs;
• providing a rotatably driven bedroll for transferring the web of material to the rotatably driven turret assembly, wherein the position of the bedroll is mechanically decoupled from the positions of the independently driven components;
• providing a programmable control system for controlling the position of the independently driven components;
• providing memory accessible to the programmable control system;
• providing a first mandrel winding speed schedule and a second mandrel winding speed schedule in memory accessible to the programmable control system, wherein the first mandrel winding speed schedule corresponds to a log having a first length of the material, and wherein the second mandrel winding speed schedule corresponds to a log having a second length of the material;
• rotating the bedroll;
• driving the independently driven components, wherein the turret assembly is rotated to carry the mandrels in a closed path;
• varying the winding speed of the mandrels according to the first mandrel winding speed schedule for winding logs having the first length of the material;
• changing the speeds of the individually driven components relative to the rotational speed of the bedroll while rotating the turret assembly;
• and
• varying the winding speed of the mandrels according to the second mandrel winding speed schedule for winding logs having the second length of material.