A cutting unit includes a stationary frame, a cutting drum, and an anvil drum. The cutting drum and the anvil drum are arranged one over the other for cutting web material fed therebetween. The upper drum is centerd on a rotatable arbour and rotatably supported in the stationary frame. The lower drum is rotatable and movable towards and away from the upper drum. A rotatable carrier, movable towards and away from the upper drum, includes at least two contact rollers. The lower drum is shaftless and rests on the contact rollers. At least one contact roller is situated on either side of a central vertical plane of the lower drum for providing support of the lower drum by the contact rollers only. A pressing device moves the carrier and the lower drum towards and against the upper drum for providing cutting pressure between the upper drum and the lower drum.

A method for providing a nonlinear line of weakness on a web material including providing: a base, a support, a blade, and a driving means. The base may comprise at least one counter component having a length (L.sub.CC) where the counter component comprises a nonlinear shape having a shape width (W). The support may be operatively engaged with the base. The blade may have a length (L.sub.B) and may be disposed on the support so as to either contact or to come in close proximity with the counter component. At least one of the counter component and the blade may have a nonlinear shape and at least one of the counter component and the blade may comprise multiple segments.

The present disclosure relates to adjusting and maintaining a position of a cutting surface used to create lines of weakness for rolled products. A perforating apparatus includes a housing rotatably supported by a frame, wherein the housing is adapted to rotate about a first axis. A support member including a first cutting surface is rotatably supported by the housing, wherein the support member is adapted to rotate about a second axis offset from the first axis. A roll including a second cutting surface is positioned adjacent the support member, wherein the roll is adapted to rotate about a third axis. The second cutting surface is adapted to contact the first cutting surface as the roll rotates about the third axis. The perforating apparatus is configured such that the functions of adjusting the position of the first cutting surface and holding the first cutting surface in a fixed position are separate.

An electrically powered disc cutting machine for cutting off discs from in particular elongate material to be cut, preferably food, includes: a cutting device having a circular blade that rotates in a cutting plane about an axis of rotation perpendicular to the cutting plane and is driven by a blade motor. The cutting device includes: a carriage for carrying a carriage plate in a carriage plane perpendicular to the cutting plane and to carry at least one carriage wall that protrudes from the carriage plane; and a holder for material to be cut, the holder having a bearing surface for receiving the material to be cut and for bringing the material to be cut closer to the circular blade at an angle <90 relative to the cutting plane. The holder for material to be cut includes a fastening apparatus for fastening the holder for material to be cut.

The present invention relates to a rotary cutting apparatus for cutting a web of material, including a cutting unit rotatably mounted on a support, a rotary cutter rotatably disposed in the cutting unit, the rotary cutter having a longitudinal axis, and at least one cutting edge disposed on the rotary cutter, wherein the at least one cutting edge is orientated at an angle to the longitudinal axis of the cutter. The cutting unit being counter orientated to the feed direction of the web by an adjustable angle equal to the cutting edge angle, less than the cutting edge angle or greater than the cutting edge angle.

A machine for cutting or beveling a pipe. A cutter unit rotates around the pipe while cutting any surface of the pipe after gripping and fixing the pipe. The machine includes: a main body which a pipe passes through the center portion thereof to be fixed; and a cutter unit coupled to the main body unit rotates around the fixed pipe to cut or bevel the pipe. The cutter unit may have a rotating unit on one side to pull the cutter unit aside and a locking unit on the other side to restrain or release the cutter unit. An entry control unit operating the cutter unit includes: a lever gear-engaged with an outer side surface of an entry control plate; and a clutch formed on a rotation shaft of the lever such that the restraint is released when the lever is lifted or pressed in the axial direction.

A rotary cutting device comprising an anvil and roll having at least one knife affixed thereon, the roll being rotatably mounted to the machine by bearings disposed on opposing ends of the roll and supported by bearing mounts connected to the machine frame. A thermal isolating mounting arrangement orients the bearing mounts so that thermal growth occurs along an axis generally perpendicular to a plane in which the knife and anvil interface. A thermal isolator may also be disposed between the bearing mounts and the machine frame to further inhibit heat transfer into the frame and the resultant effect on knife position.

A roll cutting device for a web processing machine having a cutter roll with only one knife affixed thereto, the cutter roll being rotatably mounted to the machine and configured to perforate or cut the web once per revolution of the cutter roll, and a stress balancing member mounted to the cutter roll in diametric opposition to the knife, the knife and the stress balancing member being connected to the cutter roll by similar connection means so that mechanical stresses caused by connection of the knife and the stress balancing member are balanced and the cutter roll rotates without stress-induced eccentricity.

An apparatus for processing a flexible material (14) comprises: a first roller (5) extending along a main axis (A1); a second roller (6) extending along a longitudinal axis (A2), the first roller (5) and the second roller (6) being mutually co-operating to carry out an operation on the flexible material (14), an interspace (37) being defined between the first roller (5) and the second roller (6) though which the flexible material (14) can pass; a pressing device for pushing the first roller (5) and the second roller (6) one towards another; a position adjustment device for adjusting the relative position of the first roller (5) and the second roller (6), the position adjustment device being distinct from the pressing device.

Examples include a die-cutting unit that includes a device for changing a die-cutting cylinder. The die-cutting unit includes at least one die-cutting cylinder and at least one anvil cylinder. The die-cutting cylinder is arranged in a die-cutting position for die-cutting, and is exchangeable for at least one further die-cutting cylinder by means of the device for changing the die-cutting cylinder. One of the die-cutting cylinders is arrangeable in a waiting position for guiding the two die-cutting cylinders past one another. The waiting position is a position that is outside a direct guide path between the die-cutting position and a maintenance position for the set-up and/or maintenance of one of the die-cutting cylinders. Further, the waiting position is arranged lower, in the vertical direction, by no more than 100 percent of a diameter of the die-cutting cylinder in the die-cutting position or, alternatively, is located above the die-cutting position.