A method for providing a nonlinear line of weakness on a web material includes: providing a counter component comprising a nonlinear shape, where the nonlinear shape has a shape width, W; providing a blade in operative relationship with the counter component and comprising a plurality of teeth; rotating at least one of the blade and the counter component into interacting relationship with the other of the blade and the counter component; feeding a web between the counter component and the blade such that while in interacting relationship the blade cooperates with the counter component to perforate the web, wherein the web is moving in a machine direction; and reciprocally shifting one of the counter component and the blade for a distance, D, in a shifting direction, wherein D is at least the translational distance that one tooth travels to cover the shape width, W.

The disclosed fiberglass cutting device with yoke-supported adjustable roller is a device, or “gun,” with on-the-fly—during operation adjustment of the spacing between the anvil roller and cutter. This adjustability is accomplished using only a single tension-adjusting knob located to one side of the anvil roller. This is superior to the prior art that required, at a minimum, two tension-adjusting knobs—one for each side of the anvil roller. To solve this problem, the fiberglass cutting device with yoke-supported adjustable roller supports the supports the anvil roller on both ends using a yoke. The position of the yoke is controlled by a single tension-adjustment knob that moves both arms of the yoke, thus maintaining the anvil roller in a position parallel to the cutting roller. The use of the yoke also avoids only supporting the anvil roller at a single end, which creates an unstable cantilevered-roller.

The invention relates to an apparatus comprising a pair of rollers (2) with a nip and having respective axes thereof in a common plane therebetween, first and second roller mounting arrangements (8) at respective opposite ends of said pair (2), said arrangements having a hinging system (26, 30) at one side of said common plane and whereby one of the pair of rollers (2) can be turned relative to the other. The invention also relates to an associated method.

A cutting apparatus for cutting a web within a frame includes a die cutter assembly including a cutting blade projecting from a cylindrical surface and a counter anvil including first and second ends journaled into the frame. The counter anvil is positioned below the die cutter assembly for receiving the web fed therebetween across a width of the frame. The cutting apparatus includes first and second outboard bearing assemblies positioned on the die cutter near the first and second opposing ends, respectively, and one or more inboard bearing assemblies positioned about the die cutter assembly and spaced inwardly from the outboard bearing assemblies. Each outboard bearing assembly is configured to control a spacing between the die cutter assembly and the counter anvil along the width of the frame. The cutting apparatus also includes one or more actuators positioned atop the frame in connection with the one or more inboard bearing.

An adjustable wedge apparatus is provided that includes a split wedge, a first block, a second block, a threaded adjustment screw, and an expandable and contractable biasing device. The split wedge is configured to be sandwiched between the first block and the second block. The first block and the second block are configured to be held together, with the split wedge between, by the expandable and contractable biasing device. The spilt wedge has a narrow end divided into two tines, and a threaded through-hole. The threaded adjustment screw has an external thread that is complementary to the internal thread of the through-hole. Tightening the threaded adjustment screw spreads apart the first block and the second block. An axle alignment system including the adjustable wedge apparatus is also provided, for example, a rotary die cutter alignment system. A method skew of adjustment is also provided.

A cutting apparatus including an apparatus frame and a cutting station, for forming interconnected bags, is provided. The cutting station includes a rotary anvil having an axis of rotation and mounted to a first frame structure, a rotary cutting die disposed adjacent to said rotary anvil and having an axis of rotation parallel to said first axis of rotation, said rotary cutting die including a rotatable cylindrical shaft carrying a die blade, said rotary cutting die being mounted to a frame structure, and an adjustment mechanism for varying the distance between said anvil and said cutting die, said mechanism including a rotatable spindle having threaded portions of different pitch. A first threaded portion engages a threaded portion of said first or said second frame structure and said second threaded portion engaging a threaded portion of said apparatus frame.

A sheet processing apparatus includes a conveyance unit that conveys a sheet, a processing unit that performs processing on the sheet conveyed by the conveyance unit, and a controller that controls the conveyance unit and the processing unit. The processing unit includes a cutting unit capable of cutting the sheet along a cutting line, a holding unit that is configured to be movable between a holding position and a release position and that is disposed such that a holding line, which is formed on the sheet when the sheet is held, is substantially parallel to the cutting line, and an angle adjuster capable of adjusting an angle of the cutting unit and the holding unit with respect to a conveying direction.

A tool-holder column for a unit for converting a flat substrate that has two upper bearings (14, 16) each for supporting one end of an upper rotary tool (10), and two lower bearings (15, 17) each for supporting one end of a lower rotary tool (11), the flat substrate being movable longitudinally between the upper rotary tool (10) and the lower rotary tool (11), the bearings (14, 15, 16, 17) being vertically movable in opposite directions on either side of the longitudinal direction (L) of movement of the flat substrate, and a common drive for the bearings (14, 15, 16, 17) allowing the bearings (14, 15, 16, 17) to be moved simultaneously by one and the same distance in opposite directions, and including a screw device (25), the bearings (14, 15, 16, 17) being mounted one above another on the screw device (25) such that the rotation of the screw device (25) causes the linear movement of the bearings (14, 15, 16, 17) in opposite directions.

The present disclosure relates to apparatuses and methods for adjusting and maintaining a position of cutting surfaces used to create lines of weakness in rolled products. During cutting operations, intermittent contact between cutting surfaces causes cutting components to become heated, which in turn, causes an overlap distance between cutting surfaces to vary from desired values. Conversely, when cutting operations are stopped, the components cool, which in turn, may cause the overlap distance to vary from desired values at steady state operating conditions. To help reduce or eliminate the changes to overlap distances caused by cyclical heating and cooling between times of cutting operations and shutdowns, one or more heaters may be utilized to apply heat to one or more components to maintain relatively constant temperatures during periods of cutting operations and/or when cutting operations are paused or stopped. In turn, the heater(s) may operate to maintain and/or change the overlap distance to desired values.

A perforating apparatus has a base having at least one counter component. The counter component has a length, L.sub.CC, and a nonlinear repeat length. A support is operatively engaged with the base. A blade having a length, L.sub.B, is disposed on the support so as to cooperate in interacting relationship with the counter component. The blade has a plurality of teeth. A web material is perforated as it passes between the base and the support and the blade cooperates with the counter component. A driving means is associated with one of the support and the base to reciprocally shift the one of the support or the base for a distance, D, in a shifting direction.