Apparatus for the transverse cutting of weblike material
AssigneeFosber S.p.A.
InventorMauro Adami
Life of this patent
Estimating the term…
Abstract
The apparatus for cutting a weblike material (N) fed continuously along a path (P) through said apparatus comprises a rotating cutting cylinder (101) and an opposing member (105), these being arranged on opposite sides of said path (P). On the cutting cylinder are a plurality of blade segments (111) distributed along the length of the cutting cylinder and connected to actuators (119, 121) for producing a movement of selective extension and retraction of the blade segments (111) with respect to the cutting cylinder (101).
Claims16
An apparatus for cutting a web material fed continuously along a path through said apparatus, the apparatus comprising:
- a rotating cutting cylinder;
- and
- an opposing member;
- said cutting cylinder and said opposing member being arranged on opposite sides of said path, said cutting cylinder having a length and a plurality of blade segments distributed along the length of said cutting cylinder and connected to a plurality of actuators so as to produce selective extension and retraction of said blade segments with respect to said cutting cylinder;
- wherein each blade segment is supported by a pivoting part hinged about a hinge axis, the extension and retraction of said blade segments being produced by a pivoting movement of said pivoting part about said hinge axis;
- and
- a stop engageable with each pivoting part to absorb at least a portion of a stress exerted on the corresponding blade segment during cutting of the material, each pivoting part being disengaged from said stop in a non-cutting position of the corresponding blade segment;
- wherein said cutting cylinder defines a circumference, wherein said stop is on a block attached to an outer circumferential surface of the cutting cylinder, said block carrying a pivot pin for the pivoting part of the corresponding blade segment.
An apparatus for cutting a web material fed continuously along a path through said apparatus, the apparatus comprising:
- a rotating cutting cylinder;
- and
- an opposing member;
- said cutting cylinder and said opposing member being arranged on opposite sides of said path, said cutting cylinder having a length and a plurality of blade segments distributed along the length of said cutting cylinder and connected to a plurality of actuators so as to produce selective extension and retraction of said blade segments with respect to said cutting cylinder;
- wherein said plurality of actuators are housed in an axial cavity inside said cutting cylinder;
- wherein each blade segment is supported by a pivoting part hinged about a hinge axis, the extension and retraction of said blade segments being produced by a pivoting movement of said pivoting part about said hinge axis;
- and
- a stop engageable with each pivoting part to absorb at least a portion of a stress exerted on the corresponding blade segment during cutting of the material, each pivoting part being disengaged from said stop in a non-cutting position of the corresponding blade segment;
- wherein said cutting cylinder defines a circumference, wherein said stop is on a block attached to an outer circumferential surface of the cutting cylinder, said block carrying a pivot pin for the pivoting part of the corresponding blade segment.
Dependencies are inferred from the claim text.