B - Operations – Transporting – 31 – B
Patent
B - Operations, Transporting
31
B
B31B 1/74 (2006.01) B24B 53/04 (2006.01) B24D 9/04 (2006.01) B26D 7/20 (2006.01) B31B 1/14 (2006.01)
Patent
CA 2311231
A rotary die cuter for a box making machine has an abrading cylinder mounted for rotation alongside the anvil for engaging and resurfacing the blanket of the anvil on a virtually continuous basis to smooth, level and even the surface of the blanket. This resurfacing occurs during normal operation of the rotary die cutter so no production is lost. The abrading cylinder has a sheet layer of abrasive material spirally wrapped on the surface of the cylinder and bonded thereto with adhesive material on the backside of the sheet layer. The abrading cylinder is movable towards or away from the anvil by a servo motor and gearbox. The position of the abrading cylinder relative to the anvil is determined by an encoder which sends the information to a computer or programmable controller which calculates the changing diameter of the blanket and the amount of speed change that must be imparted to the anvil to compensate for its changing diameter. The computer or programmable controller is connected to a drive system of the anvil to effect the speed change.
Polikov Yury
Sardella Louis M.
Gowling Lafleur Henderson Llp
Sun Automation Inc.
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