Tension control device for paper web in a rotary printing machin

Details Tension control device for paper web in a rotary printing machin Tension control device for paper web in a rotary printing machin

1999-05-06

2000-06-13

Walsh, Donald P.

Winding, tensioning, or guiding

Tension control or brake

Supply controlled

2425545, 2425546, B65H 2306

Patent

active

060738766

ABSTRACT:
A tension control device for paper web used in a rotary printing machine which includes paper rolls each of which has a brake mechanism varied in response to fluid pressure to splice to a new roll when a preceding roll reaches to a predetermined remain level, comprises; a tension detecting mechanism for detecting the magnitude of the tension applied to the paper web; a fluid pressure feeding system including at least three routes for feeding respective different pressures to the brake mechanisms; a first brake-force adjusting mechanism to provide a first pressure which is reduced as the tension applied to the paper web increases; a second brake-force adjusting mechanism to provide a second pressure which is reduced as the tension applied to the paper web increases and is greater than the first pressure; a first switching mechanism to switch the fluid pressure route in response to one of predetermined emergency signals; and a second switching mechanism for feeding a third pressure greater than the maximum of the second pressure in response to a splicing operation signal.

REFERENCES:
patent: 2965326 (1960-12-01), Rockstrom
patent: 3813052 (1974-05-01), Swann et al.
patent: 4000865 (1977-01-01), Gaskins
patent: 4288045 (1981-09-01), Romhild
patent: 4709872 (1987-12-01), Hammer et al.
patent: 5186409 (1993-02-01), Kansaku

Affiliated with

Also associated with

Rating

Tension control device for paper web in a rotary printing machin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tension control device for paper web in a rotary printing machin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tension control device for paper web in a rotary printing machin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2062046