Apparatus and method for cutting or perforating a paper web
AssigneeMuller Martini Holding AG
InventorsRolf Meyerhans, Roger Lüscher, Markus Bracher
Life of this patent
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Abstract
An apparatus and a method for processing a digitally printed-on paper web, conveyed continuously through the apparatus includes a perforating tool for perforating the paper web transverse to its movement direction, and a cutting tool for cutting print sheets from a downstream end of the paper web. The tools are attached spaced-apart to a tool carrier which can be moved to two operating positions in which respectively one of the tools can be made to engage with a counter tool on a rotating cutting drum.
Claims20
An apparatus for processing a paper web, digitally printed-on and moved continuously through the apparatus in a movement direction, said apparatus comprising:
- a perforating tool for perforating the paper web transverse to the movement direction;
- a cutting tool for cutting off print sheets from a downstream end of the paper web, wherein the perforating tool and the cutting tool are respectively arranged on a first side of the paper web and transverse to the movement direction of the paper web;
- at least one counter tool arranged on a side that is opposite the first side of the paper web;
- a rotatable cutting drum for holding the at least one counter tool, the drum including a rotational axis which is oriented transverse to the movement direction of the paper web;
- a joint tool carrier for accommodating the perforating tool and the cutting tool, wherein the perforating tool and the cutting tool are attached spaced-apart on the tool carrier, and wherein the tool carrier is movable between two operating positions in which the perforating tool is made to engage with the at least one counter tool in one of the two operating positions for processing the paper web and the cutting tool is made to engage with the at least one counter tool in the other of the two operating positions for processing the paper web;
- a first drive motor having a drive shaft having a drive axis;
- and
- a crankshaft connecting the tool carrier to the drive shaft of the first drive motor to realize a swivel movement of the tool carrier;
- wherein the crankshaft includes a crank arranged on the drive shaft of the first drive motor and a push rod having a first connection to the crank that defines a first axis and having a second connection to the tool carrier that defines a second axis.
An apparatus for processing a paper web, digitally printed-on and moved continuously through the apparatus in a movement direction, said apparatus comprising:
- a perforating tool for perforating the paper web transverse to the movement direction;
- a cutting tool for cutting off print sheets from a downstream end of the paper web, wherein the perforating tool and the cutting tool are respectively arranged on a first side of the paper web and transverse to the movement direction of the paper web;
- at least one counter tool arranged on a side that is opposite the first side of the paper web;
- a rotatable cutting drum for holding the at least one counter tool, the drum including a rotational axis which is oriented transverse to the movement direction of the paper web;
- a joint tool carrier for accommodating the perforating tool and the cutting tool, wherein the perforating tool and the cutting tool are attached spaced-apart on the tool carrier, and wherein the tool carrier is movable between two operating positions in which the perforating tool is made to engage with the at least one counter tool in one of the two operating positions for processing the paper web and the cutting tool is made to engage with the at least one counter tool in the other of the two operating positions for processing the paper web;
- a first drive motor having a drive shaft having a drive axis;
- a crankshaft connecting the tool carrier to the drive shaft of the first drive motor to realize a swivel movement of the tool carrier;
- a second drive motor to drive the cutting drum with the at least one counter tool;
- a drive control connected to the second drive motor for controlling a speed and an angular position of the second drive motor;
- a joint machine frame, wherein at least the cutting drum, the tool carrier and the first drive motor are positioned in the joint machine frame;
- and
- an adjustment device, wherein the machine frame has a fulcrum and the machine frame is arranged to be swiveled with the adjustment device relative to the paper web around the fulcrum parallel to the transport plane of the paper web.
Dependencies are inferred from the claim text.