US Patent 7377212 Automatic band conveying device

An automatic band conveying device includes a band transmitting device employed to pass a band into a band rail, and a pressing rail device composed of an electromagnetic valve, a connecting rod and a pressing plate. As the electromagnetic valve is electrified, it can generate magnetic force to enable a movable member pivotally formed on its top to be moved, so that the connecting rod can be driven by the movable member to push a pressing side of the pressing plate to press on the band rail. Thus the automatic band conveying device is simply structured and easy to operate.