Device for making cuts in the direction of the advance of pieces of thin material

A device for making cuts in a piece of thin material, said device comprising:

• a cutter carrying drum having a periphery and rotating about a drum axis in a direction of advance of the thin material, the drum axis defining a radial direction;
• a peripheral cutter including a cutting edge which is curved about an axis coaxial with the drum axis;
• a cutter mounting base including
• a fixing base removably attached to said cutter carrying drum,
• a radially outer portion attached to said peripheral cutter, said cutting edge orientated parallel to the direction of advance and projecting radially beyond the periphery of said cutter carrying drum, and
• an elastic support portion intermediate said common fixing base and said radially outer portion, said recess providing (a) a radial elasticity to said peripheral cutter relative to the drum axis, and (b) an oscillatory elasticity to said peripheral cutter relative to an oscillatory axis parallel to the drum axis, said elastic support portion including
• (a) first and second lateral sides extending radially between said fixing base and said radially outer portion
• (b) a first slit having two opposite closed ends, said first slit disposed between said first and second lateral sides, and disposed adjacent to a radially outer position of said elastic support portion;
• (c) a second slit having two opposite closed ends, said second slit spaced radially inward from said first slit, said second slit disposed between said first and second lateral sides, and disposed adjacent to a radially inner position of said elastic support portion;
• and
• (d) two laterally aligned third slits spaced intermediate said first slit and said second slit, said third slits each having an open end, which extends into a respective one of said first and second lateral sides of said elastic support portion, and said third slits having an opposite closed end being laterally adjacent but spaced from the other closed end;
• and
• a cutting bed drum having a periphery and rotating in the direction of advance and which interacts with the periphery of said cutter carrying drum.