Tension control apparatus
AssigneeSumitomo Electric Industries, Ltd.
InventorsSaburo Kawabata, Shigeru Suemori
Life of this patent
Estimating the term…
Abstract
A tension control apparatus includes at least two guide rollers and at least one dancer roller disposed so as to be movable relative to said guide rollers, and applies a predetermined amount of tension to a linear body wound about the guide rollers and dancer roller. This apparatus has a tension control device for variably controlling the tension applied to the linear body by adjusting an angle between a vertical line and a line connecting respective rotational centers of the guide rollers and dancer roller.
Claims10
A tension control apparatus comprising
- at least two guide rollers,
- at least one dancer roller disposed so as to be movable relative to said guide rollers for applying a predetermined amount of tension to a linear body wound about said guide rollers and dancer roller,
- tension control means for holding said dancer roller and moving said dancer roller along a predetermined line which does not cross a vertical line extending from said guide rollers so as to control the tension applied to said linear body by adjusting an angle between a vertical line and a line connecting respective rotational centers of said guide rollers and dancer roller.
A tension control method in which a linear body is wound about at least two guide rollers and at least one dancer roller movably disposed relative to said guide rollers so as to apply a predetermined amount of tension to said linear body, said method comprising:
- variably controlling the tension applied to said linear body by moving said dancer roller along a predetermined line which does not cross a vertical line extending from said guide rollers to adjust an angle between a vertical line and a line connecting respective rotational centers of said guide rollers and dancer roller.
Dependencies are inferred from the claim text.