Abstract: A blade holder for cutting machines includes a blade head held on a raising and lowering device and having an adjustment mechanism for a circular blade that is held on the blade head. The adjustment mechanism for the movement of the circular blade between a cutting position and a ready position, is provided with an adjustment piston rod having an adjustment piston that is guided in a chamber of the blade head housing and can is adapted to be moved by compressed air. The adjustment piston rod is biased by a compression spring into the ready position of the circular blade. The piston surface of the adjustment piston has a cross-sectional area that is configured such that as the path of the adjustment piston in the direction of adjustment increases, the piston surface that is acted upon by compressed air increases.

Abstract: Universal cutting assembly for rotary shear, pressure or blade cutting machines of different sheet materials, of the type comprising a fixed, upper support body (T), a disc-holder unit (U) connected to said support body so as to be able to rotate by at least 180° along a vertical axis, a support flange (F) for a cutting disc (D) housed in the disc-holder unit (U). Flange (F) is subject to a perpendicular displacement to the cutting surface for moving disc (D) closer to/away from the cutting area, driven by the action of a pressurised fluid on first piston means (3), and by a displacement parallel to the cutting surface for positioning the disc (D) with respect to a counterdisc arranged below the cutting surface, driven by the action of a pressurised fluid on second piston means (17). The disc-holder unit (U) comprises an automatic device for stopping the cutting disc (D) in a rest position, which device is actuated by respective piston means in fluid connection with said second piston means.

Abstract: A blade holder for cutting machines includes a blade head held on a raising and lowering device and an adjustment mechanism for a circular blade that is held on the blade head. The adjustment mechanism, for the movement of the circular blade between a cutting position and a ready position, is provided with an adjustment piston rod having an adjustment piston that is guided in a chamber of the blade head housing and can be moved by compressed air. The adjustment piston rod is biased by a compression spring into the ready position of the circular blade. The piston surface of the adjustment piston has a cross-sectional area that is configured such that as the path of the adjustment piston in the direction of adjustment increases, the piston surface that is acted upon by compressed air increases.

Abstract: A cutting assembly (20) is removably supported on a sheet bending brake (24) for cutting a work piece (22). The cutting assembly (20) includes a cutter body (32), and a first (42) and a second cutting disk (48), each having an outer periphery defining a primary (44) and a complimentary cutting edge (50) respectively. The first (42) and second cutting disks (48) are rotatably supported by the cutter body (32) and rotate about a first axis (46) and a second axis (52) respectively. An adjustment mechanism (60) interconnects the second cutting disk (48) and the cutter body (32) for axially adjusting the complimentary cutting edge (50) with respect to the primary cutting edge (44) without having to remove the second cutting disk (48) from the cutter body (32). The cutting assembly (20) includes a locking device (82) for preventing movement of the adjustment mechanism (60) relative to the cutter body (32).

Abstract: A blade holder for cutting machines has a blade head secured at a lowering device and a blade head housing having a chamber. The blade head has a blade holding member for receiving a circular blade. An advancing device is mounted in the blade head housing. The advancing device has an advancing piston rod and an advancing piston actuating the advancing piston rod. The advancing piston rod acts on the blade holding member for moving the circular blade between a cutting position and a ready position. The advancing piston is pneumatically actuated and mounted and guided in the chamber. A pressure spring acts on the advancing piston rod to prestress the advancing piston rod into the ready position of the circular blade. A pressing device loads the pressure spring in a direction of the cutting position of the circular blade. The pressing device is decoupled from the advancing piston rod.

Abstract: A blade holder for cutting machines has a blade head secured at a lowering device and a blade head housing having a chamber. The blade head has a blade holding member for receiving a circular | blade. An advancing device is mounted in the blade head housing. The advancing device has an advancing piston rod and an advancing piston actuating the advancing piston rod. The advancing piston rod acts on the blade holding member for moving the circular blade between a cutting position and a ready position. The advancing piston is pneumatically actuated and mounted and guided in the chamber. A pressure spring acts on the advancing piston rod to prestress the advancing piston rod into the ready position of the circular blade. A pressing device loads the pressure spring in a direction of the cutting position of the circular blade. The pressing device is decoupled from the advancing piston rod.

Abstract: A ticket making apparatus includes a feed mechanism and a perforating assembly set within a housing that has an opening through which tickets are dispensed. The perforating assembly perforates a flexible material to define individual tickets. The apparatus can also include a slicer assembly to slice the flexible material into strips of tickets. The apparatus can also include a printing mechanism for adding print to the flexible material. A method for making tickets includes feeding a flexible material into a perforating assembly and dispensing the perforated material as a plurality of tickets. The method can also include synchronizing the flexible material to the rotation of the perforating assembly, slicing the flexible material into strips of tickets, and printing on the flexible material.

Abstract: The present invention relates to a control device to grind a knife shaft used in a machine intended for cutting sheets of materials into strips, for example sheets of paper, plastic, plates of photosensitive film or any other material having the form of thin sheets. The control device according to the invention enables the grinding of the knives of knife shafts of a slitter by checking and controlling the drift of the dimensional differences of position of the knives on the knife shaft and by controlling the variability of the pitches between the knives. This with the goal of obtaining the precision and the quality of cutting required for cut photographic film strips. This device especially finds its principal application in the photographic industry, in particular on grinding machines for the knives of knife shafts equipping the film slitters.

Abstract: Upper and lower rotating drums (13, 14) having shearing blades (13a, 14a) are supported by a bearing frame (12) via eccentric sleeves (15, 16). Only the upper rotating drum (13) is rotated by a drive motor 17, while the eccentric sleeves (15, 16) are rotated by a drive motor 25, so that the rotating drums (13, 14) can be made to approach and separate from each other. Interlocking gears (29, 30) are fixed to shaft end portions of the rotating drums (13, 14) to permit interlocking of the rotating drums (13, 14) when these drums approach. Oldham's couplings (41, 42) are interposed between the interlocking gears (29, 30) and timing gears (33, 34) to rotate the rotating drums (13, 14) constantly and synchronously.

Abstract: A tire cutter apparatus including a rotatable anvil wheel assembly and a cutter wheel assembly connected to a frame. The anvil wheel assembly has an anvil wheel with a smooth circumferential anvil surface. The cutter wheel assembly includes a cutter wheel having a peripheral edge. The cutter wheel assembly and the anvil wheel assembly are movable between a closed position in which the cutter wheel edge is adjacent the anvil surface to define a cutting site, and an open position in which the cutter wheel edge and the anvil surface are spaced apart. A gripping wheel having an articulated peripheral edge is connected to the cutter wheel assembly and/or to the anvil wheel assembly, so that the gripping wheel engages a portion of a tire to move the tire through the cutting site. The apparatus may be a compression cutter defining a nip, and multiple overlapping gripping wheels may be driven to drive the tire through the cutter.

Abstract: A slitting machine includes a pair of parallel arbors structured to support a plurality of cutting knives. The arbors are mounted to a head stock and tail stock on the slitting machine. The head stock and tail stock each rotatably support eccentrics which support the end portions of the arbors. Angular contact bearings, such as tapered roller bearings or ball bearings with inclined races, are positioned between the head stock and tail stock and the respective eccentrics and also within the eccentrics between the arbors and the eccentrics. Mechanisms are provided for providing an axial load across all of these bearings to eliminate play and so to accurately position the arbors so that cutting accuracy can be maintained. One such mechanism is a collet/piston supporting the operator's end of the arbors. The collet piston is received in a cylinder to which hydraulic pressure can be applied through a rotary coupling.

Abstract: A modular shear shredder having at least one shear cartridge having a shaft which carries a plurality of cutter elements mounted within a shredder housing having a support frame, opposing end walls attached to the frame, and side walls removably attached to the frame, the side walls being shaped such that removal of the one of the side walls permits the shear cartridge inserted and removed from the shredder housing. Consequently, there is no need to remove the end walls of the housing, or otherwise dismantle the unit to remove the shear cartridge. The removable side walls each support a plurality of comb elements which mesh with the cutter elements on the shear cartridge. Each shear cartridge within the shredder includes a pair of end caps removably attached to the ends of the shaft. The caps are shaped to be attached either to support bearings or drive motor output shafts.

Abstract: A cutter assembly of a strand cutting machine comprises a fixed cutter member, over which the strand is to be drawn after being cooled and dewatered, and a rotary cutter member coactive with said fixed cutter member to cut a strand of resin into pellets. The rotary cutter member includes i) a cylindrical rotary body having a forward side surface parallel to a supply-side end surface of the fixed cutter member, ii) a rotary shaft extending perpendicularly to the supply-side end surface of the fixed cutter member and supporting thereon the rotary body, and iii) a plurality of blades mounted on the rotary body in a forward inclined posture in the direction of rotation. The rotary body has a plurality of through-holes arranged at regular distances along a circle concentric with the rotary body, each through-hole extending between opposite surfaces. Each blade is attached to an inside surface 5a of the respective through-hole and has at its end a cutting edge.

Abstract: A slitter holder has a slitter blade support rod that can be moved relative to a stationary position. The slitter holder comprises a moving mechanism for moving the slitter blade support rod relative to the stationary portion between a slitter blade operation position and a slitter blade rest position, and a clamping mechanism for clamping the slitter blade support rod to the stationary portion when the slitter blade operation position.

Abstract: A pusher comprises a body with a plurality of piston holes provided on a front surface thereof, pistons slidably fitted to the piston holes and each having a front end extending in front of the body, an oil passage provided in the body and communicated with a bottom portion of each piston hole, a pressure chamber provided in the body and communicated with the oil passage, a threaded shaft threadably fitted to a threaded hole which is provided in the body and communicated with the pressure chamber, and oil filled in the bottom portion of each piston hole, the oil passage and the pressure chamber, where the piston is adapted to be pushed in front of the body by the threadable advancing of the threaded shaft at force larger than the advancing force of the threaded shaft.

Abstract: An apparatus is disclosed for automatically controlling the position of a plurality of slitters for slitting a moving web. A slitter blade and a slitter band are secured respectively to a first and second housing members such that the slitter band cooperates with the slitter blade for slitting the web between the slitter blade and the band. An electronic control is connected to a first and second motor for selectively positioning the blade and band adjacent to each other. The electronic control includes a first and second control module secured to a first and second motor respectively. A digital control computer is connected to the modules for selectively controlling movement of the modules by sending the modules to a designated location using a predetermined number of stepping increments.

Abstract: A slitter knife holder has a rod for supporting a slitter knife. Strain gauges are attached to the rod. There is provided a conversion circuit for converting changes in electric resistance of the strain gauges due to the deflection of the rod caused by the pressure of contact of the upper blade with the lower blade of the slitter knife into a signal indicative of the pressure of contact of the upper blade with the lower blade. The signal from the conversion circuit may be applied to a contact pressure monitor for indicating the signal directly to an operator or to an automatic contact-pressure control system.

Abstract: A rotary knife holder for a longitudinal slitter in which a rotary knife disc 8 is displaceable relative to a second rotary knife disc 10, co-operating therewith, by separate pneumatic cylinders 12 and 14 to which air is supplied by a common controllable feed line 26 against a resilient restoring force initially radially and then axially. To achieve instant response, to permit the feed speed and feed force for the cylinder 14 to be as independently adjustable as possible and, in addition, to avoid any slip-stick effect in the axial feed movement, an adjustable reducing valve 38 is connected prior to the cylinder 14. This reducing valve 38 is double-acting and is filled with a damping fluid which, during the feed stroke, is expelled through a throttle member 50 into an air vessel 52.

Abstract: A slitter apparatus for cutting a continuous web is disclosed comprising a slitter blade and a slitter mounting bracket. The bracket comprises a threaded depth-post assembly, a spring unit for maintaining the desired tension at the cutting surface, and a dove-tail spring-loaded base.

Abstract: A holder for a roller slitting knife is provided comprising a first selectively-operable piston assembly including a first piston and a first piston cylinder housing. The first piston has a non-circular, cross-sectional portion preferably configured as a curved triangle of constant diameter received in the mating bore of the housing. A second selectively-operable piston assembly including a second piston and a second piston housing is mounted to the first assembly and disposed for operation in a direction transverse to operation of the first piston assembly. A roller slitting knife is mounted to the second piston assembly whereby the knife is selectively positioned for operation upon selective operation of the first and second piston assemblies.

Abstract: The axial loading system is used in a tape slitter comprised of first and second arbors in spaced parallel relationship carrying male and female cutting knives for slitting tape. These cutting knives are in the form of a series of uniformly axially spaced discs on the first arbor having their corner peripheries bearing in an axial direction against corresponding female discs on the second arbor. The loading system comprises a combination threaded arrangement at one end of the first arbor with a torque applying tool for rotating the threaded means to thereby adjust the axial force of the male blades against the female blades. The torque applying tool not only enables the rotation to take place but will cease functioning after a given torque has been reached, thereby assuring that a given axial force of the male blades against the female blades will not be exceeded.

Abstract: Rigid support for adjustable slitter blade heads enables permanent factory setting of slitting overlap and the rake and toe-in angles. The upper blade is mounted on its blade head for both radial and axial movement relative to the lower blade without requiring resetting of the blade overlap and rake and toe-in angles. The blades are replaceable without requiring resetting of the blade cutting overlap and rake and toe-in angles. Full adjustment of the blade supporting heads across the web path is provided for. Setting efficiency is greatly improved.

Abstract: An arrangement for dampening vibrations in and lubricating the operative edges of a pair of cooperating sheet cutting discs. A block member having a surface comprised of a solid lubricant is yieldably biased so that said surface engages the face of one of the discs that is in operative engagement with a face of the other disc.

Abstract: Slitting apparatus for trimming the edges of a web of corrugated board and longitudinally cutting the web into a plurality of narrow webs is constructed with selectively operable fluid operated means that clamps the working heads in adjusted positions along the length of their respective drive shafts. The fluid operated means includes a plurality of spring steel pressure bars extending parallel to the length of each shaft and disposed within different grooves thereof, with each pressure bar being operatively positioned to clamp a plurality of heads in operating positions by engaging keys secured to these heads. The keys extend beyond the faces of the heads and for each of the heads include notches that provide clearance for the extending portions of the keys secured to adjacent heads.