Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1981-06-23
1983-12-20
Jillions, John M.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 63, 242 721, 242 781, B65H 1904, B65H 7524
Patent
active
044212836
ABSTRACT:
A strip recoiling drum including a gripper slot and a movable gripper bar for gripping the end of a strip to be recoiled and a pair of axially pivotable drum walls to vary the drum circumference. The gripper bar and drum walls are movable by means of longitudinally movable internal wedge members which are simultaneously actuated by an hydraulic piston and cylinder arrangement to close the gripper slot and expand the drum circumference. The gripper bar includes wedge elements which engage cooperating wedge elements on the gripper wedge member and a radially movable wedge to move the drum walls is cooperatively engaged with an axially movable drum wedge actuator member. Initial movement of the wedge members grasps the leading edge of the strip in the gripper slot and simultaneously moves the drum walls outwardly to their maximum circumference positions. Hydraulically operated external wedges are adapted to move the internal wedge members in an opposite direction, thereby releasing the grip of the gripper bar on the leading edge of the strip being recoiled and simultaneously causing the drum walls to be moved inwardly to reduce the drum circumference. The movement of the wedge members in either direction can be accomplished while the drum is rotating.
REFERENCES:
patent: 2352042 (1944-06-01), Linde
patent: 3870243 (1975-03-01), Briggs
patent: 4093140 (1978-06-01), Matsunaga
patent: 4175715 (1979-11-01), Raynor
patent: 4199116 (1980-04-01), Matsunaga
patent: 4201352 (1980-05-01), Madachy
patent: 4280671 (1981-07-01), Miller
Jillions John M.
Pro-Eco Limited
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