| 摘要 |
A mechanism for automatically centering sub-guide rollers and adjusting the clearance between the sub-guide rollers thereby to adjust the clamping condition of the material to be rolled, for use in the material guiding apparatus of a rolling mill for rolling a steel blank into wires, bars and so forth, the material guiding apparatus being of a type having a pair of roller holders 2, 3 each of which carrying corresponding one of a pair of main guide rollers 4, 5 and a pair of sub-guide rollers 41, 51. Each of the sub-guide rollers is rotatably carried by corresponding one of a pair of eccentric shafts pins 26 unitary with each of a pair of support shafts 25 supported by a corresponding roller holder. A right hand screw gear 27 and a left hand screw gear 28 are attached to respective ones of the support shafts 25. A manually operable right hand screw worm 29 and a right hand screw worm 30 which is also manually operable are made to engage with the gears 27, 28, respectively. The worms are carried by respective shafts 13, 14 which are brought into engagement for unitary rotation with each other as necessitated.
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