Calender for the production of packing sheets and method of cont

Details Calender for the production of packing sheets and method of cont Calender for the production of packing sheets and method of cont

1993-02-23

1994-06-07

Simmons, David A.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Control means responsive to product weight or dimension

264175, 425367, 425372, 492 10, B29C 3500

Patent

active

053184300

ABSTRACT:
A calender for producing packing sheets, in particular packing sheets reinforced with synthetic fiber, has a large diameter heated cylinder, on which a packing sheet is formed and vulcanized, rotatably supported by spaced calender stands and driven by a direct current motor. An unheated cylinder of smaller diameter also driven by a direct current motor, is supported by the calender stands for rotation and for movement toward and away from the heated cylinder and is hydraulically pressed toward the heated cylinder as a pressure roller. The circumferential speed of each of the cylinders is sensed by a pick-up activated by uniformly spaced marks on the circumference of the cylinder and the thickness of the packing sheet on the heated cylinder is sensed by sensing the position of the shaft of the pressure roller. Signals of the pick-ups which sense circumferential speeds of the cylinders and the sensor which senses position of the shaft of the pressure roller shaft are fed to inputs of a processor of which two outputs are connected respectively to speed controls of the motors which drive the cylinders. The processor is programmed to synchronize the circumferential speed of the two cylinders, or alternatively, to provide a small speed difference to apply friction to the packing sheet.

REFERENCES:
patent: 3292208 (1966-12-01), Wood
patent: 3531827 (1970-10-01), Dragonette
patent: 3600747 (1971-08-01), McCarthy
patent: 3655312 (1972-04-01), Erb et al.
patent: 3893795 (1975-07-01), Nauta
patent: 4038012 (1977-07-01), Sander
patent: 4117054 (1978-09-01), Salo
patent: 4260578 (1981-04-01), Moody
patent: 4302478 (1981-11-01), Hamann et al.
patent: 4319868 (1982-03-01), Riemersma et al.
patent: 4519757 (1985-05-01), Wittkopf et al.

Affiliated with

Also associated with

Rating

Calender for the production of packing sheets and method of cont does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Calender for the production of packing sheets and method of cont, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calender for the production of packing sheets and method of cont will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-789178