Method and apparatus for controlling the stock tension as it is withdrawn from a coil
AssigneeAntek, Inc.
InventorEarl M. Seagrave, Jr.
Life of this patent
Estimating the term…
Abstract
A method and apparatus for controlling stock tension as it is withdrawn from a coil in which a coil support is mounted for rotation about an axis transverse to the direction of withdrawal of stock from the coil and also for limited shifting movement along a path lengthwise of the direction of stock withdrawal. Shifting movement of the coil support in the direction of stock withdrawal is yieldably opposed with a generally uniform biasing force and the rotation of the coil about its axis is variably braked in response to shifting of the coil along said path to maintain the exiting tension on the stock substantially equal to the biasing force.
Claims16
A flexible stock pay-off apparatus for controlling tension on continuous flexible stock as it is withdrawn from a coil, the pay-off apparatus including a frame, a carriage mounted on the frame for movement relative thereto along a path between a retracted position and an extended position, a coil support mounted on the carriage for rotation about an axis transverse to said path in response to withdrawal of stock from a coil on the support, means yieldably urging the carriage along said path toward said retracted position, variable brake means for controlling rotation of a coil on said coil support, and means operative in response to movement of the carriage along the path for variably operating the brake to increase and decrease the braking action as the carriage moves respectively toward and away from said retracted position.
A flexible stock pay-off apparatus for maintaining a generally uniform tension on continuous flexible stock as it is withdrawn from a coil, the pay-off apparatus including a frame, a carriage mounted on the frame for movement relative thereto along a path between a retracted position and an extended position, a coil support mounted on the carriage for rotation about an axis transverse to said path in response to withdrawal of stock from a coil on the support, means biasing said carriage in one direction along said path with a preselected generally uniform force, variable brake means for controlling rotation of said coil support, and means operative for response to movement of the carriage along the path for variably operating the brake means to increase and decrease the braking action on the coil support as the carriage moves respectively toward and away from said retracted position until the exiting tension on the stock substantially equals said preselected force on the carriage.
A method of controlling tension on continuous flexible stock as it is withdrawn in one direction from a coil of flexible stock comprising, supporting the coil of flexible stock for axial rotation about an axis extending transverse to the direction of stock withdrawal and for (limited) shifting movement lengthwise of said direction of stock withdrawal, yieldably opposing shifting movement of the coil in said direction of stock withdrawal with a biasing force, annd variably braking rotation of said coil about its axis to decrease the braking action on the coil as it shifts in said one direction to maintain the exiting tension on the stock substantially equal to said biasing force.
Dependencies are inferred from the claim text.