Rewinding machine for the formation of logs of wound paper which can be cut to form usable small rolls

• US 5,040,738 A
• Filed: 03/23/1990
• Issued: 08/20/1991
• Est. Priority Date: 03/30/1989
• Status: Expired due to Fees

• Current Assignee: Fabio Perini S.P.A. (Korber AG)
• Original Assignee: Perini SPA Fabio
• Inventors: Biagiotti, Guglielmo
• Primary Examiner(s): Jillions, John M.
• Application Number:
  US07/497,924
• Time in Patent Office: 515 Days
• Field of Search: 242/66, 242/74, 242/56 A, 242/56 R, 156/458, 156/578, 156/356, 156/357
• US Class Current: 242/532.3
• CPC Class Codes: B65H 19/2269 Cradle
• CPC Class Codes: B65H 19/283 by applying adhesive to the core
• CPC Class Codes: B65H 2301/41812 by conveyor belt or chain running in closed loop
• CPC Class Codes: B65H 2301/41824 from below, e.g. between rollers of winding bed
• CPC Class Codes: B65H 2301/41826 by gripping or pushing means, mechanical or suction gripper
• CPC Class Codes: B65H 2301/4607 by adhesive tape
• CPC Class Codes: B65H 2408/235 Cradles

Abstract

The machine for rewinding webs of paper from a large roll onto a core to form small rolls includes a continuous conveyor for the cores, a distributor associated with said conveyor for applying adhesive to the cores, an upper winding cylinder, a lower winding cylinder defining a nip with the upper cylinder for receiving a core, and an insertion group which advaces up the core from said conveyor into said nip. The lower cylinder is smooth. The adhesive distributor includes a dispensing cylinder having a cylindrical surface abe to apply the adhesive substantially in the form of an axially-extending longitudinal strip onto the surface of the cores.

Claims

1. A rewinding machine for the production of small rolls of toilet paper, kitchen towels and the like, from a large supply of rolls, said machine including:

a core supply including a quantity of cores, and [a continuous conveyor for the cores]

a distributor with adhesive for applying adhesive to the cores,

an upper winding cylinder,

a lower winding cylinder,

a nip between the upper cylinder and the lower cylinder for receiving a core,

a continuous conveyor for the cores which extends from said distributor to a zone close to the nip between the two winding cylinders,

an insertion device which picks up the core from said conveyor and inserts it into said nip, and

said lower cylinder having no grooves.

2. The rewinding machine of claim 1 wherein the adhesive distributor includes a dispensing cylinder developed with a cylindrical surface to apply the adhesive substantially in the form of an axially-extending longitudinal strip onto the surface of the cores.

3. A rewinding machine of claim 2 wherein the surface of the adhesive dispensing cylinder is provided with spaced-apart narrow annular grooves which form short interruptions in said longitudinal strip of adhesive on the cores.

4. The rewinding machine of claim 3 including a pusher in said insertion device for moving said cores, said pusher arranged in alignment with the spaced-apart grooves, said pusher picking up each core and inserting it into said nip.

5. The rewinding machine of claim 2 wherein the adhesive applicator includes means for controlling the width of strip of adhesive on the core.

6. The rewinding machine of claim 1 including a support adjacent said nip for receiving a core from said conveyor and holding it until removed therefrom by said insertion device.

7. The rewinding machine of claim 1 including a third movable winding roller.