Conveyors: power-driven – Conveyor frame or casing – Adjustable conveyor frame or casing
Reexamination Certificate
2002-06-26
2004-01-27
Bidwell, James R. (Department: 3651)
Conveyors: power-driven
Conveyor frame or casing
Adjustable conveyor frame or casing
C198S813000
Reexamination Certificate
active
06681923
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to a method and conveying device for mounting and removing a continuous conveyor belt for a printing press.
BACKGROUND OF THE INVENTION
Conveyor belts of printing presses (also known as webs), for conveying stock through the printing press, include a continuous belt, which is stretched around a frame and which is driven by high-speed rollers. With the operation of a printing press, a change of the web is required from time to time, whereby the mounted web is removed and another web is mounted in its place. The changing of the web is particularly impeded by the fact that the web is a continuous closed loop that cannot be separated. As such there are considerable possibilities that the web will come into damaging contact with various elements of the printing press located in proximity to the web and its path within the printing press.
To date, a maintenance technician trained on the specialized printing press had to be called to the premises of the printing press in order to have the web changed. The changing of the web, even for a dedicated maintenance technician, is difficult and takes a considerable amount of time. This creates high maintenance costs for the printing press and long, costly down times of the printing press.
SUMMARY OF THE INVENTION
In view of the above, this invention is directed to mounting and removing a continuous conveyor belt for a printing press. A sub-carrier is attached to each front side of a frame which is approximately the same width as the conveyor belt, and has surface shape that is somewhat similar to the track of the conveyor belt on the frame in the areas of the frame; and the continuous conveyor belt or is mounted or removed from the frame via the sub-carriers.
The purpose of the invention is to mount a continuous conveyor belt or web on a frame or to remove it from the frame in a cost-effective, quick and simple manner. The invention makes it possible for a single operator of a machine to simply and quickly change the continuous conveyor belt or web. In order to reduce the force required to change the web, the frame with the web is folded down prior to the change of the web.
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Bidwell James R.
Kessler Lawrence P.
NexPress Solutions LLC
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