Trim eliminator for log saw
AssigneePaper Converting Machine Company
InventorLarry D. Wierschke
Life of this patent
Estimating the term…
Abstract
Trim eliminator for log saw and method in connection with the rewinding of webs into logs and rolls or toilet tissue and toweling wherein two independently adjustable suspensions systems are employed for each log/roll lane so as to suspend rolls over a cull area but not the trim annuli generated from cutting the log ends.
Claims14
Apparatus for handling rolls and trim annuli resulting from transversely severing a series of logs of convolutely wound web material, each log having an upstream end and a downstream end and including an upstream roll and a downstream roll, comprising a frame, trough means on said frame defining a horizontal path with said trough means and said path each also having upstream and downstream ends for supporting each of said logs and said rolls, pusher means operably associated with said trough means for engaging the upstream end of each log to advance said log toward the downstream end of said path, blade means movably mounted on said frame for transversely severing each log into a plurality of retail-size rolls and upstream and downstream trim annuli,
- said trough means adjacent its downstream end being equipped with means for opening said trough means to remove support from said retail-size rolls and trim annuli, said opening means having a horizontal length sufficient to allow a trim annulus to fall through said trough means, and
- first means mounted on said frame above said opening means for suspending at least a first log upstream roll and second means above said opening for suspending at least a following log downstream roll independently of said first log upstream roll, neither of said first and second means being operative to suspend said trim annuli whereby said trim annuli are adapted to fall out of said path.
Apparatus for handling rolls and trim annuli resulting from transversely severing a series of logs of convolutely wound web material, each log having an upstream end and a downstream end and including an upstream roll and a downstream roll, comprising a frame, trough means on said frame defining a horizontal path with said trough means and said path each also having upstream and downstream ends for supporting each of said logs and said rolls, pusher means operably associated with said trough means for engaging the upstream end of each log to advance said log toward the downstream end of said path, blade means movably mounted on said frame for transversely severing each log into a plurality of retail-size rolls and upstream and downstream trim annuli,
- said trough means adjacent its downstream end being equipped with means for opening said trough means to remove support from said retail-size rolls and trim annuli, and
- first means mounted on said frame above said opening means for suspending a first log upstream roll and second means above said opening for suspending a following log downstream roll independently of said first log upstream roll, neither of said first and second means being operative to suspend said trim annuli whereby said trim annuli are adapted to fall out of said path, each of said suspending means including an elongated continuous belt having a lower run above said opening means, each belt having a foraminous pad extending only partway of the length of the belt, an open bottomed vacuum chamber above said lower runs operative to apply a roll suspending vacuum to said foraminous pads.
Dependencies are inferred from the claim text.