Rewinding machine and method for the formation of logs of web material with means for severing the web material

An automatic rewinding machine for receiving a web material for winding the web material on cores to form logs, said web material being in continuous motion at a web feeding speed and having spaced apart lines of perforations, the machine comprising a web material feeder, a winding cradle constructed and arranged to contact a log during at least a portion of the winding of the web material on a core, a core, inserter, and a movable web material separator constructed and arranged to move at a speed faster than said web feeding speed and is adapted to periodically contact said web material and modify the speed of the web material, with said contact by said separator being downstream of a newly inserted core, said separator thereby adapted to cause said web material to separate along a line of said lines of perforations at a point in said web material located between said newly inserted core and a nearly completed log.

An automatic rewinding machine for receiving a web material for winding the web material on cores to form logs, said web material being in continuous motion at a web feeding speed and having spaced apart lines of perforations, the machine comprising a first winding roller, a second winding roller, and a third winding roller;

• said first winding roller, said second winding roller and said third winding roller being positioned for simultaneously contacting a log during at least a portion of the winding of the web material on a core;
• a core inserter;
• and a movable web material separator constructed and arranged to move at a speed faster than said web feeding speed and is adapted to periodically contact said web material at a point downstream of a newly inserted core to modify the speed of the web material, said separator thereby adapted to cause said web material to separate along a line of said lines of perforations at a point in said web material located between said newly inserted core and a nearly completed log.

An automatic rewinding machine for receiving a web material in continuous motion and for winding the web material on cores to form logs, the machine comprising a first winding roller around which said web material is moved, a second winding roller, and a third winding roller;

• said first winding roller, said second winding roller and said third winding roller positioned for simultaneously contacting a log during at least a portion of the winding of the web material on a core;
• a core inserter;
• and a movable web material separator which moves at a speed faster than a speed of said web material and said movable web material separator is adapted to coact with said first winding roller to pinch said web material and modify the speed of the web material and thereby separate said web material at a point in said web material located between a newly inserted core and a nearly completed log.

A method of winding a web material on a series of cores, the method comprising advancing said web material at a speed along a path around an outer surface of a first winding roller and onto a log being wound, introducing a core into a channel formed between said first winding roller and a surface spaced from said first winding roller, the core pinching the web material against said first winding roller at an upstream portion of said path, and periodically actuating a web material separator which is spaced from said first winding roller before and after web separation to pinch the web material against said first winding roller at a portion of said path downstream from where said core is introduced while said web material separator is moving at a speed faster than a speed of the web material to thereby cause said web material to separate at a point in the web material located between said core and a nearly completed log.

A method of winding a web material on a series of cores, said web material having longitudinally spaced transversely extending lines of perforations and the method comprising advancing said web material at a speed along a path around an outer surface of a first winding roller and onto a log being wound, introducing a core and bringing said core into contact with said web material driven around said first winding roller so that the core pinches the web material against said first winding roller at an upstream portion of said path, and periodically actuating a web material separator spaced from said first winding roller before and after web material separation to pinch said web material against said first winding roller at a portion of said path downstream from where said core is introduced while said web material separator is moving at a speed faster than a speed of the web material to thereby cause said web material to separate at a point in said web material located between said core and a nearly completed log.