Rewinding machine for the formation of rolls or logs, and windin

Details Rewinding machine for the formation of rolls or logs, and windin Rewinding machine for the formation of rolls or logs, and windin

1990-07-02

1992-08-11

Stodola, Daniel P.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 56R, B65H 1820, B65H 1800

Patent

active

051372258

ABSTRACT:
The rewinding machine of the present invention produces rolls or logs of paper such as toilet paper, kitchen towels, etc. It includes an upper winding cylinder (9; 109), a lower winding cylinder (10) forming with the upper one an interspace (12), a mobile roller (14) able to define with said two cylinders a space in which the roll is wound. A pusher (22) inserts individual cores (A) in said interspace, and an applicator (34, 36, 38) wets the cores with adhesive. In combination with one (9; 109) of the two winding cylinders (9, 109; 10) a fixed surface (52; 80) is provided. A web of incoming paper N slides along the surface (52; 80). The pusher (22) moves the core (A1) at an insertion speed which is lower than the paper-feeding speed. During its insertion into the interspace (12) the core (A1) moves toward the fixed surface (52; 80), providing a temporary braking effect on the web N lying between the fixed surface (52; 80) and the core (A1). This causes the web to tear between the just-completely formed roll (R) and the incoming core (A1).

REFERENCES:
patent: 4121409 (1978-10-01), Uchida et al.
patent: 4327877 (1982-05-01), Perini
patent: 4721263 (1988-01-01), Mayazaki
patent: 4723724 (1988-02-01), Bradley
patent: 4828195 (1989-05-01), Hertel et al.
patent: 4931130 (1990-06-01), Biagiotti

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