Apparatus for the transverse cutting of weblike material
AssigneeFosber S.p.A.
InventorMauro Adami
Life of this patent
Estimating the term…
Abstract
A rotating cutting cylinder and an opposing member, wherein the cutting cylinder is fitted with a plurality of blade segments distributed along the length of the cutting cylinder and connected to one or more actuators for producing a movement of selective extension and retraction of said blade segments with respect to said cutting cylinder.
Claims45
An apparatus for cutting a web material fed continuously along a path through said apparatus, said apparatus comprising:
- a rotating cutting cylinder having a length and including a plurality of blade segments distributed along the length of the cutting cylinder and a plurality of actuators connected to the plurality of blade segments and operable to produce selective extension and retraction of the blade segments with respect to the cutting cylinder, at least one of the plurality of blade segments remaining retracted during a full rotation of the cutting cylinder;
- and
- an opposing member, the cutting cylinder and the opposing member being arranged on opposite sides of the path.
An apparatus for cutting a web material fed continuously along a path through said apparatus, said apparatus comprising:
- a rotating cutting cylinder having a length and including a plurality of blade segments distributed along the length of the cutting cylinder and a plurality of actuators connected to the plurality of blade segments and operable to produce selective extension and retraction of the blade segments with respect to the cutting cylinder, at least one of the plurality of blade segments remaining retracted during a rotation of the cutting cylinder;
- and
- an opposing member, the cutting cylinder and the opposing member being arranged on opposite sides of the path,
- wherein each blade segment is supported by a pivoting part hinged about a hinge axis, extension and retraction of the blade segments being produced by a pivoting movement of the pivoting part about the hinge axis, and
- wherein the cutting cylinder defines a circumference, and wherein the hinge axis is radially external to the circumference of the cutting cylinder.
An apparatus for cutting a web material fed continuously along a path through said apparatus, said apparatus comprising:
- a rotating cutting cylinder having a length and including a plurality of blade segments distributed along the length of the cutting cylinder, each of the plurality of blade segments being selectively extended and retracted such that, during a full rotation of the cutting cylinder, one of the plurality of blade segments is extended to cut the material and another of the plurality of blade segments remains retracted so as to not cut the material;
- and
- an opposing member, the cutting cylinder and the opposing member being arranged on opposite sides of the path.
An apparatus for cutting a web material fed continuously along a path through said apparatus, said apparatus comprising:
- a rotating cutting cylinder having a length and including a plurality of blade segments distributed along the length of the cutting cylinder, each of the plurality of blade segments being selectively extended and retracted such that, during a rotation of the cutting cylinder, one of the plurality of blade segments is extended to cut the material and another of the plurality of blade segments remains retracted so as to not cut the material;
- and
- an opposing member, the cutting cylinder and the opposing member being arranged on opposite sides of the path,
- wherein each blade segment is supported by a pivoting part hinged about a hinge axis, extension and retraction of the blade segments being produced by a pivoting movement of the pivoting part about the hinge axis, and
- wherein the cutting cylinder defines a circumference, wherein the hinge axis is radially external to the circumference of the cutting cylinder.
An apparatus for cutting a web material fed continuously along a path through said apparatus, said apparatus comprising:
- a rotating cutting cylinder having a length and including a plurality of blade segments distributed along the length of the cutting cylinder, each of the plurality of blade segments being selectively extended and retracted such that, during a full rotation of the cutting cylinder, one of the plurality of blade segments is extended to cut the material and another of the plurality of blade segments remains retracted so as to not cut the material.
An apparatus for cutting a web material fed continuously along a path through said apparatus, said apparatus comprising:
- a rotating cutting cylinder having a length and including a plurality of blade segments distributed along the length of the cutting cylinder, each of the plurality of blade segments being selectively extended and retracted such that, during a rotation of the cutting cylinder, one of the plurality of blade segments is extended to cut the material and another of the plurality of blade segments remains retracted so as to not cut the material,
- wherein each blade segment is supported by a pivoting part hinged about a hinge axis, extension and retraction of the blade segments being produced by a pivoting movement of the pivoting part about the hinge axis, and
- wherein the cutting cylinder defines a circumference, wherein the hinge axis is radially external to the circumference of the cutting cylinder.
An apparatus for cutting a web material fed continuously along a path through said apparatus, said apparatus comprising:
- a rotating cutting cylinder having a length and including a plurality of blade segments distributed along the length of the cutting cylinder;
- a plurality of actuators connected to the plurality of blade segments, the actuators being operable to selectively extend and retract the blade segments with respect to the cutting cylinder, at least one of the plurality of blade segments being retracted and not cutting the web material;
- and
- an opposing member, the cutting cylinder and the opposing member being arranged on opposite sides of the path.
Dependencies are inferred from the claim text.