| 摘要 |
A track and flap assembly includes a brake section and terminates with a curved section and a support member, for guiding a cutting tape transversely across a moving web of paper, and employs a plurality of movable sections enabling relocation of the brake section, and the curved section and its support member without changing their configuration to accommodate different trim widths of the web. The assembly includes a track that has an open channel containing the cutting tape and at least one flap for frictionally engaging the cutting tape when the tape exits laterally from the channel to assist in controlling the tension thereon and its movement. A pair of flaps may extend over a portion of the channel less than the entire width of the channel, and a third flap may overlie and at least cover the space between the pair of flaps forming a complete seal therein. A single flap may form with the channel the top of the guideway for the tape. The pair of flaps may also control the exit direction of the cutting tape from the curved section with one such flap being more pliable and longer than the other. The track includes compressed air or coolant to keep the channel free of contaminants and control its temperature or a liquid coolant to just control its temperature.
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