Abstract: A method for producing stacks of sheet material transversely and longitudinally cuts rectangular starting stacks using a single cutting machine and short travel paths for the material being cut. The starting stack arranged on a rear table is pushed forward under a cutting blade and is separated into at least two partial stacks which are aligned, rotated 90 degrees and pushed back under the cutting blade to form a plurality of finished partial stacks.

Abstract: An apparatus and method for separating and aerating sheets of material arranged in a stack include a stack support member on which the stack is retained in a generally flat condition, and a clamping member which clamps onto an edge portion of the stack. Upper and lower rollers are positioned above and below the stack of sheet material, and an adjustment member converges and diverges the same into and out of engagement with the stack. A conveyor member shifts the stack of sheet material between the upper and lower rollers. The upper roller and lower roller are arranged in a staggered relationship, such that an imaginary plane extending between the two rollers is disposed at an angle with respect to both the horizontal and the vertical.

Abstract: A method for producing stacks of sheet material transversely and longitudinally cuts rectangular starting stacks using a single cutting machine and short travel paths for the material being cut. The starting stack arranged on a rear table is pushed forward under a cutting blade and is separated into at least two partial stacks which are aligned, rotated 90 degrees and pushed back under the cutting blade to form a plurality of finished partial stacks.

Abstract: An apparatus and a method for separating and aerating sheet material arranged in a stack include a support to receive the sheet material stack thereon before the same is separated and aerated. A roll mechanism clamps the sheet material stack between an upper rotatable roll and a lower drivable roll. The sheet material stack is conveyed into a position between the upper and lower rolls when the same are in an open position. A ram converges the upper and lower rolls to clamp the sheet material stack therebetween. A drive rotates the lower roll in the conveying direction of the sheet material stack, and a gripper selectively grips the front end of the sheet material stack.

Abstract: An apparatus and method for separating and aerating sheets of material arranged in a stack include a stack support member on which the stack is retained in a generally flat condition, and a clamping member which clamps onto an edge portion of the stack. Upper and lower rollers are positioned above and below the stack of sheet material, and an adjustment member converges and diverges the same into and out of engagement with the stack. A conveyor member shifts the stack of sheet material between the upper and lower rollers. The upper roller and lower roller are arranged in a staggered relationship, such that an imaginary plane extending between the two rollers is disposed at an angle with respect to both the horizontal and the vertical.

Abstract: The invention concerns a device for die-cutting a stack of sheet-like materials, particularly labels, whereby the stack is pressed into the die-cutter blade by a relative movement of a punching ram and a hollow cylindrical die-cutter blade. For a device such as this, it is proposed that the die-cutter blade 18 is adjustably held in a frame 16, and the frame 16 is accommodated by a receiving apparatus 13 which is mounted in a punch platen 12 and is adjustable relative to it, whereby the frame 16 can be slid in a plane parallel to the punch platen 12, in particular is adjustable in the direction of two major axes that are essentially arranged perpendicular to one another, and can also be tilted out of the plane. Such a device allows for precise orientation of the die-cutter blade relative to the stack to be punched.

Abstract: The invention concerns a device for die-cutting a stack of sheet-like materials, particularly labels, whereby the stack is pressed into the die-cutter blade by a relative movement of a punching ram and a hollow cylindrical die-cutter blade.

Abstract: The invention concerns a device for die-cutting a stack of sheet-like materials, particularly labels, whereby the stack is pressed into the die-cutter blade by a relative movement of a punching ram and a hollow cylindrical die-cutter blade.

Abstract: A machine for cutting flat stock, especially sheets of material. The machine has a counter that accommodates the stock and a cutting assembly. The cutting assembly has a knife mounted on a beam that travels up and down toward and away from the counter in a machinery frame. The beam accommodates at least two separate knife-positioning components that force the back of the knife against the beam. Each knife-positioning component rests against a pressure-accommodating component on the back of the knife. At least that area of the pressure-accommodating component that comes into contact with the knife-positioning component is hard.

Abstract: A hydraulic system includes a multi-position valve which controls the flow of system fluid pressure to various work stations. The multi-position valve is biased by a centering spring to a neutral position from which it can be shifted to a selected working position. A retaining mechanism is able to retain the valve in the selected working position when the system pressure is in a prescribed pressure range. The retaining mechanism is urged to its retaining position by a control fluid pressure which is derived from the system pressure. When the system pressure is below or above the prescribed pressure range the retaining mechanism is unable to resist the force of the centering spring and the valve assumes a neutral position. When the system pressure is in the prescribed range, a constant control pressure is supplied to the retaining mechanism for effectively resisting the force of the centering spring.