| US 7,540,447 B2 | ||
| Braking force control method and device for strip-shaped material feeding device | ||
| Yoshihide Shiraishi, Noda (Japan); and Hiromitsu Ebihara, Toride (Japan) | ||
| Assigned to Komori Corporation, Tokyo (Japan) | ||
| Filed on Apr. 28, 2005, as Appl. No. 11/116,369. | ||
| Claims priority of application No. 2004-136128 (JP), filed on Apr. 30, 2004. | ||
| Prior Publication US 2005/0242224 A1, Nov. 03, 2005 | ||
| Int. Cl. B65H 23/06 (2006.01) | ||
| U.S. Cl. 242—421 [242/421.4; 242/421.7] | 14 Claims |
| 1. A braking force control method for a strip-shaped material feeding device including a braking force control device and
arranged to feed a strip-shaped material of a web roll, said strip-shaped material feeding device including web roll support
means having a rotating shaft for supporting said web roll, brake means for applying a first braking force in a rotating direction
to said rotating shaft, and drive means for applying a drive force in the rotating direction to said rotating shaft and a
second braking force in the rotating direction to said rotating shaft,
said braking force control method comprising:
applying only the second braking force when a required braking force is smaller than a maximum braking force applicable by
said drive means; and
applying the first braking force simultaneously with the second braking force when the required braking force is larger than
said maximum braking force, such that the brake means applies the first braking force only when the required braking force
exceeds the maximum braking force.
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