Apparatus for winding stiffened coreless rolls and method
AssigneeElsner Engineering Works, Inc.
InventorRobert E. Molison
Life of this patent
Estimating the term…
Abstract
An apparatus and method for winding stiffened coreless rolls which include a spiral wound roll formed from this product paper, conventionally paper having a printed pattern or design on one side, and a spiral stiffener sheet extending completely around the roll to stiffen the roll. The apparatus receives continuous webs of product paper and stiffening paper, severs the stiffening paper into short lengths for winding into the roll of product paper and automatically feeds the stiffening sheet onto a length of product paper which is wound into a roll. The two webs are fed to either side of a continuous rotating cutter roll. Anvil assemblies are moved into engagement with a knife carried on the cutter roll for selectively severing the webs as required.
Claims33
Apparatus for winding a spiral paper roll having a stiffening layer, the apparatus comprising,
- A) product paper feed means for moving product paper from a source of product paper downstream along a product paper feed path;
- B) web rolling means for forming a spiral roll from product paper fed downstream along the product paper feed path;
- C) stiffening paper feed means for feeding stiffening paper from a source of stiffening paper downstream along a stiffening paper feed path, the stiffening paper feed path joining the product paper feed path upstream of the web rolling means;
- and
- D) a paper cutting assembly including,
- i. a cutter roll located between said feed paths, a cutter knife on the cutter roll, and drive means for rotating the cutter roll so that the cutter knife is rotated downstream along one path and upstream along the other path;
- ii) a product paper anvil blade located on the side of the product paper feed path away from the cutter roll, said product paper feed path extending between the product paper anvil blade and the cutter roll;
- and
- iii) a stiffening paper anvil blade located on the side of the stiffening paper feed path away from the cutter roll, said stiffening paper feed path extending between the stiffening paper anvil blade and the cutter roll;
Apparatus for cutting spaced webs, said apparatus comprising,
- A) a rotary cutter roll, a knife blade secured to and rotatable with the cutter roll, and drive means for rotating the cutter roll;
- B) first means for feeding a first web of paper along a first path located on a first side of the cutter roll;
- C) second means for feeding a second web of paper along a second path located on a second side of the cutter roll opposite from said first side;
- D) a first anvil blade located on said first side of said cutter roll outside of the first path co-operable with said knife blade to sever a first web of paper on the first path when in a first web cutting position and rotation of the roll moves the knife blade past the first anvil blade, and third means for moving such first anvil blade toward and away from said first web cutting position;
- and
- E) a second anvil blade located on said second side of said cutter roll co-operable with said knife blade to sever a second web of paper on the second path when in a second web cutting position and rotation of the roll moves the knife blade past the second anvil blade, and fourth means for moving said second anvil blade toward and away from said second web cutting position.
The method of winding a stiffened paper roll from a length of product paper and a length of stiffening paper, comprising the steps of:
- A) feeding a web of product paper from a source of product paper downstream along a first path to a cutter roll, the first path extending to a roll winding assembly;
- B) feeding a web of stiffening paper from a source of stiffening paper downstream along a second path spaced a distance from the first path to a cutter roll, the second path extending to a junction with the first path;
- C) continuously rotating a cutter roll located between said first and second paths to move a blade on the cutter roll upstream and downstream along said paths;
- D) relatively moving a first anvil located on the side of the first path away from the cutter roll and the blade toward and away from each other so that the first anvil and blade cooperate to selectively sever a length of product paper from the product paper web;
- E) relatively moving a second anvil located on the side of the second path away from the cutter roll and the blade toward and away from each other so that the second anvil and blade cooperate to selectively sever a length of stiffening paper from the stiffening paper web;
- F) feeding the severed lengths of the product paper and the stiffening paper the said paths to the roll winding station;
- and
- G) winding the severed lengths together at the roll winding assembly to form a stiffened paper roll.
Dependencies are inferred from the claim text.