Patent ID: 11945131
Assignee: UNITED CONVERTING TISSUE S.R.L.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. Device for locking two adjacent sections of a paper roll placed on the sides of a cutting section plane defined by the cutting advancement movement through the roll of a cutting blade of a cutting machine, wherein the device comprises
a pair of clamping devices, each configured to be able to assume an unlocking configuration and a locking configuration of a respective adjacent sections of the roll,
at least a first actuator operable on command to pass said clamping devices from the unlocking configuration to the locking configuration of the respective adjacent sections, and vice versa,
at least a second actuator connected to the clamping devices and configured to perform a distancing movement of the clamping devices in locking configuration with respect to said cutting section plane,
wherein it comprises
inhibition means of the mutual distancing movement of the active clamping devices during the cutting advancement of the blade through the roll, and,
control and activation means operatively connected to said inhibition means and to said second actuator of the clamping devices, configured to deactivate said inhibition means and activate said second actuator to perform the mutual distancing of the clamping devices at the end of a complete cutting step of the roll performed by the blade.