| 摘要 |
<p>A band sealer for sealing thermoplastic bags including superposed endless heat transfer bands and conveyor chains with adjacent bag-engaging and return runs immediately above rigid frame plates, a motor connected by chain driven and meshed pinions driving the conveyor chains, the sealing bands driven from band wheels overlying the chains, mounting brackets beneath the wheels with upstanding stub shafts upon which the wheels are journaled, each band wheel having a ring gear meshed with a pinion beneath the wheel and a sprocket coaxial with the pinion and meshed with the adjacent chain for driving the wheel.</p> |
