Abstract: A tool positioning apparatus which is adapted to position by numerical control a plurality of pairs of tools attached to a pair of parallel shafts so that longitudinal slits, scores or the like may be produced along a web of board such as corrugated board conveyed through between said pair of shafts is provided with a tool positioning apparatus, said apparatus comprising tool feed control devices which are provided correspondingly to the number of said pairs of tools and are movable respectively on a guide member disposed parallel to said shafts by driving motors which are numerically controlled by a positioning controller and which have shifters insertably engageable with pairs of tool holders corresponding thereto respectively on which said pairs of tools are fixed; and a moving device which enables said shifters to engage with and disengage from simultaneously said pairs of tool holders corresponding thereto respectively.

Abstract: An automatic slitter scorer apparatus is disclosed for slitting and scoring a corrugated paperboard web. The apparatus includes an upper pair of slitter shafts and an upper pair of scorer shafts, as well as a lower pair of slitter shafts and a lower pair of scorer shafts thereby defining two web paths through the apparatus. The web paths are used alternately. All of said shafts are selectively rotated by means of a single motor at one end of the apparatus. A set of trim chutes is provided for each pair of slitter shafts and is located downstream therefrom.

Abstract: An automatic slitter-scorer apparatus is disclosed for slitting and scoring a corrugated paperboard web. The apparatus includes an upper pair of slitter shafts and an upper pair of scorer shafts, as well as a lower pair of slitter shafts and a lower pair of scorer shafts thereby defining two web paths through the apparatus. The web paths are used alternately. All of said shafts are selectively rotated by means of a single motor at one end of the apparatus. A set of trim chutes is provided for each pair of slitter shafts and is located downstream therefrom.

Abstract: Cutting width modifying means for a machine for cutting a web of material and having groups of cutting elements of the bottom blade kind for longitudinal cutting of the web wherein the cutting elements are provided as sleeves mounted on a shaft, releasably secured against rotation thereon by keys and axially adjustable by means of externally screw threaded rings mounted in screw threaded portions of the bores of the sleeves and non-rotatably secured on the shaft, retaining means being provided selectively to retain one or more of the sleeves against rotation so that it or they is or are axially adjusted on the shaft upon rotation of the shaft by a servo motor.

Abstract: Slitter knives on a paper winder are moved to new positions by a bar to which the knife supports are coupled by means of a pin, carried on each support, and which engages in one of a number of holes equi-spaced along the bar. The bar is reciprocated so that the supports may be moved, in either direction, by successive increments equal to the hole pitch. The supports are moved in this manner until they each reach the nearest and most expedient hole to the new position. The bar is then moved one more pitch and as each support is determined to be at its new position its pin is withdrawn from the hole and it is clamped to stationary rails.Mounted on the bar opposite each hole is a switch arranged for operation by the pin, and connected to a central micro-processor which continuously monitors and controls movement of the knife supports.

Abstract: A movable carriage which is connected to a smooth actuating rod for movement therewith to a desired position where it is locked to a fixed bridge permitting the actuating rod to move with respect thereto. The movable carriage or head is clamped to the actuating rod with a continual friction force which is easily overcome by the force with which the carriage is locked to the fixed bridge. The actuating rod is movable back and forth along its longitudinal axis by manual or automatic positioning apparatus. By successive moving and locking operations for the carriage, the carriage can be moved along the entire bridge while the movement of the actuating rod is more limited. The actuating rod can be a smooth metallic rod with the carriages permanently clamped thereto with a determinable friction force, alternately the carriage can be clamped to the actuating rod until the carriage is clamped to the fixed bridge. A drive motor is used for moving the actuating rod back and forth.

Abstract: An automatic corrugated paperboard slitter scorer has slitting and scoring heads movable individually or as a group along an expandable shaft by a way of a master shifter. The expandable shaft provides a friction drag to maintain a head in position until all heads are simultaneoulsy locked to the shaft.

Abstract: A high bulk traveling web paper slitter for slitting a traveling web of a single layer or multiple layers with an unwinder for supplying the web and web processing equipment such as winders, sheeters, printing presses, etc., which take up the web and a slitting station having upper and lower rotating sharp edged slitting blades for slitting moving webs, and both the upper and/or lower sections can incorporate web support means with either or both driven independently or by the web and having drum surfaces on each side with the means suppporting the web reducing the dust, and the blades and support means being axially adjustable in position.

Abstract: Apparatus is disclosed for slitting a web of material such as paperboard utilizing at least two rotatable turrets disposed one above the other. Each turret has a pair of shafts adapted to have blades selectively positionable thereon by way of a master shifter which adjusts the blades for the next production run on one of the shafts which is in an inoperative position while the other shaft on each turret is in an operative position.BACKGROUNDSlitting apparatus particularly of the type known as an automatic slitter-scorer which includes either a computer or a mini-processor have been proposed heretofore. See U.S. Pat. Nos. 3,651,723; 3,961,547; 3,646,418; 3,831,502, 3,587,374; 4,010,677; 4,033,217. In the apparatus disclosed in said patents, blades are moved along a shaft to a predetermined position and then secured to the shaft for rotation therewith.

Abstract: A positioning device for transferring a plurality of carriages or the like into desired positions along a guide, and for holding the carriages in said positions, said device having at least one transfer bar extending along the guide and being movable reciprocally within certain end positions and each carriage having a locking mechanism which, in one condition, locks the carriage to the transfer bar for movement therewith and, in another condition, locks the carriage to the guide, wherein said locking mechanism comprises two pistons movable axially in relation to each other and provided with means for engagement with the guide and with the transfer bar respectively, a pressure medium channel leading to a space between said pistons and one of the pistons being provided with spring means so that with no pressure medium applied said one piston is forced into engagement by the spring force while, upon application of pressure between the pistons, said one piston is released and the other piston forced into its enga

Abstract: A rotary shearing apparatus for slitting sheet material into a plurality of strips of predetermined width is disclosed. The apparatus comprises a plurality of tool carriages each having upper and lower tool-holding members supporting upper and lower shearing tools, respectively, and mounted for axial movement in a machine frame for ease of positioning of the tool carriages and replacement of the shearing tools when necessary. Mechanisms are provided for adjusting the vertical overlap of the shearing tools and for automatically moving the tool carriages independently of one another at high or low speed to vary the spacing between the tool carriages and thereby adjust the width of the strips to be slit from the sheet material.

Abstract: Lateral and rotary axis controls for automatically setting up the position of a rotary element mounted on a rotatable shaft in a box-making machine. The lateral position of the element determines the position of the creases and slots in a box blank. The rotary position of the element determines the depth of the slots in the blank.

Abstract: A web slitting apparatus for operating on a traveling web of paper or the like to trim the web and/or slit the web into multiple webs having different widths comprises two or more slitter units consisting of coacting pairs of slitter blade elements and slitter band elements located above and below the web. Each of the slitter units is mounted to traverse the web from side-to-side either individually or simultaneously in response to a single driving means which adjusts the position of the slitter units across the web.

Abstract: A duplex slitter is provided with two stationary stations each having one or more pairs of drive shafts rotated on fixed centers and carrying a plurality of slitting and creasing head pairs. Each station is provided with a single mechanism for power adjustment of all head pairs. The mechanism is movable the entire length of the shafts and is selectively engageable and disengageable with each head pair. After the head pairs are in desired longitudinal positions along the shafts, the adjusting mechanism is parked at one end of the shafts outboard of the web path or working area of the station.

Abstract: An apparatus for positioning a plurality of heads slidably disposed along a shaft on, in which said respective heads are disposed and set at any desired positions through the steps of conveying said heads either individually or in groups each consisting of two or more heads by means of a shifter, isolating each said head from said shifter to set it when it reaches a desired position, and repeating the aforementioned operations. Said shifter is constructed of a slave shifter provided with means for holding and releasing said head and a master shifter provided with means for reciprocating said slave shifter along said shaft by a predetermined distance relative to said master shifter.

Abstract: A system for controlling the spacing between a plurality of saw blades. Precise control is insured by cascading an electrical feedback system in series with a mechanical feedback system.The electrical feedback system includes a position register for recording the actual location of each saw blade, a command register for recording the desired position of each saw blade, a comparator for generating an error signal corresponding to the difference between the actual and desired saw positions, and a stepper motor responsive to the error signal. The stepper motor drives a control shaft having a shaft encoder secured thereto which feeds pulses back to increment or decrement the position register, thereby synchronizing the contents of the position register to the actual position of the stepper motor.

Abstract: A device for the longitudinal cutting of webs comprises two hollow shafts, each bearing a blade, and supported on a respective spindle. One spindle is supported eccentrically in a frame so that its rotation sets the inter-axis spacing of the two shafts, whereby the blades may be engaged and disengaged in the radial sense. The same spindle is displaceable axially whereby the blades may be engaged and disengaged in the axial sense. Both operations are performed by means of one and the same handle. Means is also provided for displacing simultaneously both spindles in the axial directions in order to position the blades relative to the web.