| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily regulate the thrusts of driving rollers against skid bars when imparting thrust to each of a pair of skid bars across respective pairs of driving rollers. SOLUTION: Rollers 15, 17 out of driving rollers 14-17 holding skid bars 6 therebetween are synchronously rotated via a chain 38. Both rollers 14, 15 and 16, 17 are synchronously rotated by the engagement of both synchronous gears 27, 27. Both arm brackets 19, 20 supporting the rollers 14-17 are connected to each other via an air cylinder 30 and the thrusts of the rollers 14-17 are uniformed while regulating the thrusts of the rollers 14-17 in package with the control of air pressure.</p> |
