A transfer unit is configured for use with a form, fill and seal packaging machine. The transfer unit receives a partially erected carton from a first station in a tubular form, conveys the carton to a second station, and conveys the carton from the second station to a third station. The transfer un
A transfer unit is configured for use with a form, fill and seal packaging machine. The transfer unit receives a partially erected carton from a first station in a tubular form, conveys the carton to a second station, and conveys the carton from the second station to a third station. The transfer unit includes a hub defining a longitudinal hub axis and configured for rotational movement about the hub axis. A plurality of car pairs are mounted to the hub for longitudinal movement along the hub. Each of the car pairs includes first and second cars, each of which has first and second mandrels mounted thereto. The mandrels are configured to receive a partially erected carton. Each mandrel has a mandrel axis and is rotational about its respective axis. The mandrel axes are perpendicular and tangential to the hub axis. A drive longitudinally moving the car pairs along the hub and rotationally moves the mandrels about their respective mandrel axes, about 90 degrees, between an untwisted position and a twisted position.
대표청구항▼
What is claimed is: 1. A drive assembly for longitudinally moving a pair of carrier elements along a hub having a longitudinal axis and rotating about the longitudinal axis, the drive assembly comprising: a frame; a rail disposed longitudinally along the hub and spaced from the longitudinal axis, t
What is claimed is: 1. A drive assembly for longitudinally moving a pair of carrier elements along a hub having a longitudinal axis and rotating about the longitudinal axis, the drive assembly comprising: a frame; a rail disposed longitudinally along the hub and spaced from the longitudinal axis, the rail configured to carry the carrier elements; a ring fixedly mounted to the frame and disposed about the hub, the ring defining a track and including a stationary portion and a rotating portion, the rotating portion being operably connected to a drive; first and second rotating shafts disposed on the hub, longitudinally spaced from and aligned with one another, the first shaft being a driven shaft and including a head portion disposed at and guided by the ring, the second shaft being an idler shaft; a continuous, flexible element disposed about the first and second shafts for rotational movement about the shafts, the flexible element, disposed about the shafts, defining opposing elongate sides and return portions at the shafts, the carrier elements being mounted to the flexible element; and the drive mounted to the frame and operably connected to the ring rotating portion for rotating the ring rotating portion, wherein the head portion, traverses along the ring track into the rotating ring portion and is engaged and rotated by the rotating ring portion and wherein rotation of the head portion rotates the flexible element to move the carrier elements along the rail. 2. The drive assembly in accordance with claim 1 wherein the carrier elements are mounted to respective opposing sides of the flexible element and wherein rotation of the element in a first direction drives the carrier elements toward one another and wherein rotation of the element in a second direction drives the carrier elements away from one another. 3. The drive assembly in accordance with claim 2 including a pair of cars each being mounted to opposing sides of the flexible element for opposing movement therewith. 4. The drive assembly in accordance with claim 1 wherein rotation of the flexible element drives the carrier elements in opposing directions from one another. 5. The drive assembly in accordance with claim 1 including rollers mounted to the head portion for traversing along the track. 6. The drive assembly in accordance with claim 1 wherein the ring includes two rotating portions disposed 180 degrees from one another and wherein the head portion is rotated in a first direction at one of the rotating portions and is rotated in a second, opposite direction in the other rotating portion. 7. A drive assembly for effecting movement of an effected element mounted to a hub having a longitudinal axis, the hub configured for rotating about the longitudinal axis, the drive assembly comprising: a frame; a ring fixedly mounted to the frame and disposed about the hub, the ring defining a track and including a stationary portion and a rotating portion, the rotating portion being operably connected to a drive; first and second rotating members disposed on the hub, longitudinally spaced from and aligned with one another, the first member being a driven member and including a head portion disposed at and guided by the ring, the second member being an idler member; a continuous, flexible element disposed about the first and second members for rotational movement about the members, the flexible element, disposed about the members, the effected element being operably connected to the flexible element; and the drive mounted to the frame and operably connected to the track rotating portion for rotating the track rotating portion, wherein the head portion traverses along the ring track into the rotating track portion and is engaged and rotated by the rotating track portion and wherein rotation of the head portion rotates the flexible element to move the effected element. 8. The drive assembly in accordance with claim 7 wherein the effected element is a car.
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이 특허에 인용된 특허 (15)
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