Patent application number | Description | Published |
20080210075 | Longitudinal slitting machine having knife holders disposed thereon - Longitudinal slitting machine having associated upper and lower knives. Knife holders for the upper knives are supported on a crosspiece. A knife head is carried by a lowering mechanism and supports an upper knife in the form of a circular knife, the lowering mechanism including a piston having a piston rod for the knife head. A path of movement of the circular knife into a cutting position is delimited by an abutment, and a depth adjuster fixes the cutting position when the knife head is lowered. A setting instrument indicates the position of cutting edges of the upper knife relative to the lower knife with reference to the true diameter of a new circular knife. The depth adjuster is positioned in conformity with a position value determined by the setting instrument. A sensor is aligned with an outer periphery of the upper knife, and during alignment of the sensor with the cutting edges of the upper knife, which alignment is effected by positioning of the depth adjuster and/or displacement of the sensor, an adjusting mechanism for a movement of the circular knife into its cutting position is fixed. | 09-04-2008 |
20090044675 | Cutting arrangement having a tip-to-tip blade arrangement - A cutting arrangement for longitudinally cutting or dividing material comprising two blades that are disposed across from one another and that during the cutting process cooperate with one another. Each of the blades is embodied as a circular blade having a sharp cutting edge and supported by an adjusting or placement mechanism. During the cutting process the circular blades are positioned by the adjusting or placement mechanisms in such a way that the cutting edges overlap one another to form an overlap zone, the center of which coincides with the middle of the material that is to be cut or divided. | 02-19-2009 |
20090193955 | Crush Cutter Arrangement Having An Exchange Aid For The Crush Cutter - A cutter arrangement including a crush cutter holder with a pneumatically actuatable piston and a fork-shaped blade holder supported thereby. A crush cutter is disposed in a positively engaging manner between the arms of the fork. For exchange purposes, the crush cutter can be displaced and moved out of the fork. A lower blade is associated with the crush cutter. A lever is disposed on the housing of the crush cutter holder so as to be pivotable about a bearing point. The lever is pivotable out of a release position for the crush cutter into a first contact position against the outer periphery of the crush cutter, and furthermore into a displacement position for the crush cutter leading to release of the crush cutter from the fork. | 08-06-2009 |
20090288538 | Knife Carrier Having Variably Adjustable Preload of the Circular Knife - A longitudinal cutting or slitting machine having a knife carrier that supports a circular knife. A pre-tensioning element is disposed on the knife carrier for preloading the circular knife into a cutting position defined by abutment of the circular knife against a counterknife. An adjustment mechanism is disposed on the knife carrier for effecting a variable adjustment of a preloading force exerted by the pre-tensioning element onto the circular knife. | 11-26-2009 |
20090288539 | Knife Carrier Having Deactivatable Spring-Loading - A longitudinal cutting or slitting machine having a knife carrier that supports a circular knife. A pre-tensioning element is disposed on the knife carrier for pre-tensioning the circular knife into a cutting position defined by abutment of the circular knife against a counterknife. A changeover mechanism is disposed on the knife carrier for placing the pre-tensioning element in an ineffective position that provides a firm connection between the knife carrier and the circular knife. | 11-26-2009 |
20100162871 | Slitting machine having variable adjustment of the blade cutting points - A slitting machine with an upper blade arrangement having a plurality of blade holders supported on a cross beam via associated position-securing mechanisms. Each blade holder is provided with a lowering device and a cutter head for a circular blade supported thereon, each cutter head being carried by the lowering device. Each circular blade is adapted to overlap a blade edge of a lower blade to form a cutting point disposed on the entry side of the material that is to be cut. A device is provided for adjusting a horizontally measured distance of the cutting point of the circular blade from the cross beam. | 07-01-2010 |
20110252937 | Slitting Machine for Longitudinally Cutting Material Where The Cut is Critical - A slitting machine for slitting or longitudinally cutting material, especially fibrous material, where the cut is critical. A cutting arrangement produces a slit or cut that divides a sheet of material, the cutting arrangement comprising an upper blade and a lower blade. A non-cutting tool for producing a cutting channel in a surface of the sheet of material is disposed upstream of the cutting arrangement as viewed in a direction of slitting. The cutting arrangement is adapted to enter the cutting channel and to execute a cut or slit along the cutting channel. | 10-20-2011 |
20120132046 | Cutting Arrangement Having a Tip-to-Tip Blade Arrangement - A cutting arrangement for longitudinally cutting material includes two blades disposed across from one another and which cooperate during cutting. Each blade is embodied as a circular blade having a sharp cutting edge and supported by an adjusting or placement mechanism. During the cutting process, the circular blades are positioned by the adjusting or placement mechanisms so that the cutting edges overlap one another to form an overlap zone, the center of which coincides with the middle of the material that is to be cut. An adaptive control assembly includes individual drive motors for driving each blade and enables constant side load force control for each blade, such that side load pressures are adjustable in response to changes in web sped, web tension, and blade condition in real time. Automatic blade diameter sensors calculate the zero point of the cut, determine the appropriate blade speed and automatically set the overlap. | 05-31-2012 |