Paper splicing device

A paper splicing device for splicing paper of a preceding to a succeeding paper roll having a tuning mechanism for tuning paper delivery speed of the succeeding paper roll to that of the preceding paper roll from which paper is fed while rotated, wherein a start portion of the paper of the succeeding paper roll is adhered to the paper of the preceding paper roll while peripheral speeds of said preceding and succeeding paper rolls are tuned to each other, said paper splicing device being characterized in that said timing mechanism is provided with connection means for connecting a first rotor rotating in contact with a peripheral surface of the preceding paper roll and a second rotor rotating in contact with a peripheral surface of the succeeding paper roll to a single driving source, said connection means transmitting a driving force to the first rotor from the driving source, and a tuning control section connected to the second rotor from a connection system by said connection means through an electromagnetic powder clutch capable of varying the driving so that a rotary peripheral speed of said second rotor rotating in contact with the peripheral surface of said succeeding paper roll can be gradually tuned to a rotary peripheral speed of said first rotor rotating in contact with the peripheral surface of said preceding paper roll.