Patent ID: 7014544

Claim:
A reciprocating and deflecting swing device for a roller of a cylindrical emery-polishing machine comprising: a machine base, said machine base assembled with a conveyer on a topside, said machine base having one end provided with a motor fixing base having a motor installed on an outer side thereof, said motor fixing base having an inner side provided with a roller holder positioned above said conveyer, said roller holder having an emery-tape roller fitted axially in an interior thereof, said emery-tape roller driven by said motor to swing, wherein said roller holder comprising an upper holder and a lower holder, said lower holder connected with the inner side of said motor fixing base, said upper holder transversely engaged and positioned on said lower holder, said emery-tape roller axially fitted between the opposite ends of said upper holder: a shaft-coupling unit consisting of a first shaft coupling member and a second shaft coupling member, said first and said second shaft coupling member movably fitted with each other and able to be elastically pulled outward or pushed inward a preset distance, said first shaft-coupling member having a free end connected with a shaft of said emery-tape roller, said second shaft-coupling member having a free end connected with a shaft of said motor, power output by said motor transmitted by said shaft-coupling unit to actuate said emery-tape roller to rotate, said second shaft-coupling member fixed with a belt pulley actuated by said second shaft-coupling member to rotate: a speed-reducing device secured at a preset portion of the inner side of said motor fixing base, said speed-reducing device provided with a power input terminal and a power output terminal, said power input terminal fixed thereon with a time-marking belt pulley, said time-marking belt pulley connected to said belt pulley of said shaft-coupling unit by an endless belt, said output power of said motor transmitted to said speed-reducing device through said shaft-coupling unit, said speed-reducing device having its output terminal outputting said power after reducing speed, said power output terminal of said speed-reducing device assembled thereon with an eccentric wheel: and a rod-connecting unit consisting of plural connecting rods pivotally connected with one another, said connecting rods respectively and pivotally connected with the inner wall of said motor fixing base and the corresponding end of said upper holder of said roller holder and said eccentric wheel of said speed-reducing device, said rod-connecting unit actuated by said eccentric wheel to push and pull said upper holder of said roller holder and actuate said emery-tape roller to reciprocate toward and away from said motor base.