WEB CUTTING DEVICE AND WEB CUTTING METHOD

摘要

In a web cutting device, a web held by pads has a section between mutually adjacent pads that is sandwiched between an anvil and a blade edge of a cutter and cut. A stop member is fixed in a rotating member. The cutter is biased by a biasing member and comes in contact with the stop member. The stop member obstructs travel by the cutter towards the outside in the radial direction of the rotating member, when the cutter comes in contact with the stop member. The biasing member biases the cutter to the outside in the radial direction of the rotating member and causes the cutter to come in contact with the stop member, by using a predetermined biasing force, and allows the cutter to retreat when the reaction force acting on the cutter is greater than the predetermined biasing force.

主权项

1. A web cutting device comprising:
a plurality of pads that move in a circumferential direction along a cylindrical movement path and hold a web in a releasable manner; a plurality of anvils that are arranged between the pads adjacent to each other and that move in the circumferential direction together with the pads; a revolving member that is arranged, with an interval in between, opposite to the web moved in a state of being held by the pads and that revolves in synchronization with movement of the anvils; a cutter that is held by the revolving member in a manner of being retractable from a predetermined position toward the inner side of the revolving member and that has a blade edge protruding to the outer side of the revolving member and, when the blade edge becomes such as to face the anvil in association with revolution of the revolving member, cuts the web pinched between the blade edge and the anvil; and a biasing member that biases the cutter to the outer side of the revolving member by using a predetermined biasing force so as to hold the cutter at the predetermined position and, on the other hand, when a reaction force acting on the blade edge of the cutter is greater than the predetermined biasing force, allows the cutter to retract from the predetermined position.