Cutting apparatus
AssigneeNamx Ltd.
InventorNobuo NASU
Life of this patent
Estimating the term…
Abstract
A cutting apparatus cuts a fabric using a rotary blade and a fixed blade that are built into a cutter head. The fixed blade is linked, to the other-end side of a swing arm of which one end is pivotally fitted on a blade frame by a swing shaft. The fixed blade is urged by a coil spring connected to the one-end side of the swing arm. When a prescribed resistance force is applied to the fixed blade, a position sensor detects movement of the swing arm, a fixed blade drive cylinder drives the swing arm in response to the detection, and the fixed blade is moved to an accommodation position that is above the position during cutting and that is on an opposite side in the advancing direction of the cutter head.
Claims12
A cutting apparatus comprising:
- a support surface supporting a sheet material;
- a cutter head having a first cutting blade coming into contact with the sheet material on the support surface from a side farther from the support surface and a second cutting blade coming into contact with the sheet material from a side nearer to the support surface;
- and
- a cutter head drive mechanism driving the cutter head within a plane parallel to the support surface,
- with the cutter head having a second cutting blade drive portion driving the second cutting blade at the time of notching the sheet material to an accommodation position above the position at the time of cutting the sheet material,
- wherein when, at the time of cutting the sheet material, a predetermined resistance force is exerted on the second cutting blade from the sheet material, the second cutting blade drive portion drives the second cutting blade to the accommodation position.
Dependencies are inferred from the claim text.