Device (clamp) for retaining rolls or logs by pressure in cutters for the production of toilet paper and other items
AssigneeFabio Perini S.p.A.
InventorGuglilemo Biagiotti
Life of this patent
Estimating the term…
Abstract
The pressure-retaining device or clamp acts on the roll or log adjacently to the cutting plane and may be adapted to various diameters of the material being processed; for each path of advance of the rolls or logs (B) and on each side of the cutting plane, it comprises: a pair of symmetrically curved flexible strips (12, 14) projecting from enclosing supports (9A, 10; 7A, 10) and having end portions able to move according to the variation in the diameter of the roll, and a strap (22) fixed to elastic return holders (24A) and adjusting holders, said strap surrounding the pair of strips (12, 14) so as to vary their geometry in relation to the variation in the diameter of the material being processed.
Claims14
A log-clamping device for a log-cutting machine capable of cutting one or more logs, including for each log an advancing path with a log-cutting device operating in a log-cutting plane at right angle to the advancing path, and on each side of each log-cutting plane:
- a pair of enclosing supports;
- a pair of symmetrically curved, elastically flexible strips, each having an inner surface and an outer surface;
- a first end of each strip being supported by a respective one of said pair of enclosing supports with a portion of said strip extending from said support to form, with its inner surface, a sliding seat for the log, the portion of said strip extending from said support capable to spread apart elastically;
- an elastic holder;
- an adjusting holder;
- a strap having a first end which is anchored to said elastic holder and a second end anchored to a mobile adjusting holder with said strap surrounding said pair of flexible strips, said adjusting holder adjusting a variation of the geometry of said flexible strips in relation to a variation in the diameter of the log to be processed;
- and
- two opposing oscillating cradles arranged adjacent to said enclosing support, said cradles being in contact with the outer surface of each said flexible strip.
Dependencies are inferred from the claim text.