Winding apparatus with programmed torque control

Claim 2

A programmed torque control system for winding a web of material supplied at constant tension, into a roll of material having programmed tensive gradations throughout, by controlling the magnitudes of the torques provided by first and second drum winders driven by first and second electric motors respectively, comprising: a. means for speed regulating said second motor; b. means for providing varying control signals which are a function of the torque magnitude selected for the respective drum winders; c. means for voltage regulating said first motor, connected to the terminals of said first motor, and coupled both to said varying control signal means and to the terminals of said second motor, the terminal voltage of said first motor being a function of both said varying control signals and the terminal voltage of said second motor.

Claim 3

A programmed torque control system according to claim 1 wherein: said voltage regulating means comprises variable voltage supply means in series with said first motor, the serial combination being electrically in parallel with said second motor, said varying control signals being applied to said voltage supply means to vary the output thereof.

Claim 4

A programmed torque control system according to claim 1 wherein: said voltage regulating means comprises variable voltage supply means and voltage summation means, said variable voltage means being connected across the terminals of said first motor and having a feedback path connected to said voltage summation means, said voltage summation means being coupled to said second motor and to said varying control signal means, and having a summation output connected to said variable voltage supply means to vary the voltage output thereof.

Claim 5

A programmed torque control system for winding a web of material supplied at constant tension into a roll of material having programmed tensive gradations throughout, by controlling the magnitudes of the torques provided by first and second drum winders driven by first and second electric motors respectively, comprising: a. means for speed regulating said second motor; b. means for providing varying control signals which are a function of: ((2a-1)+2(b-a)D)ein where a an operator adjustment in the region (0 to 1) which determines the magnitude of the torque developed by the first drum at the completion of said roll; b an operator adjustment in the region (0to 1) which determines the magnitude of the torque developed by the first drum at the beginning of the rolling operation. D a multiplier decreasing monotonically from 1 to 0 as a function of the increasing roll diameter. ein a voltage proportional to said constant tension and c. means for voltage regulating said first motor, connected to the terminals of said first motor and coupled to said varying control signal means and to the terminals of said second motor, the terminal voltage of said first motor being a function of both said varying control signals and the terminal voltage of said second motor.

Claim 6

A programmed torque control system for winding a web of material supplied at constant tension into a roll of material having programmed tensive gradations throughout, by controlling the magnitudes of the torques provided by first and second drum winders driven by first and second electric motors respectively, comprising: a. means for speed regulating said second motor; b. means for providing varying control signals which are a function of: ((2a-1)+2(b-a)D)ein where a an operator adjustment in the region (0 to 1) which determines the magnitude of the torque developed by the first drum at the completion of said roll; b an operator adjustment in the region (0to 1) which determines the magnitude of the torque developed by the first drum at the beginning of the rolling operation. D a multiplier decreasing monotonically from 1 to 0 as a function of the increasing roll diameter. ein a voltage proportional to said constant tension and c. means for voltage regulating said first motor, connected to the terminals of said first motor and coupled to said varying control signal means and to the terminals of said second motor, the terminal voltage of said first motor being a function of both said varying control signals and the terminal voltage of said second motor.

Claim 7

A programmed torque control system according to claim 2 wherein said variable voltage supply means is an electric generator.

Claim 8

A programmed torque control system according to claim 3 wherein said variable voltage supply means is an electric generator.

Claim 9

A programmed torque control system according to claim 2 wherein said variable voltage supply means is an electric generator having a fiEld winding to which said variable control signals are applied.

Claim 10

A programmed torque control system according to claim 3 wherein said variable voltage supply means is an electric generator having a field winding to which said summation output is applied.