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US 11,001,052 B2Granted
Apparatus for actuating a hydraulic carrier rod of a rotary printing machine
AssigneeBobst Bielefeld GmbH
InventorLorenz Landenberger
Life of this patent
Estimating the term…
Abstract
The invention is about a convenient way of fixing a sleeve over a mandrel in a press. The sleeve is attached by applying a hydraulic pressure into the mandrel which deforms itself and grips on the sleeve. The pressure is brought by a piston mounted on a screw inside the mandrel, which when tightened increases the pressure and grips the sleeve.
Claims5
A hydraulic carrier rod of a rotary printing machine in combination with an apparatus for actuating the hydraulic carrier rod, the apparatus comprising
- a rotary drive for the carrier rod;
- an electronic control device for the rotary drive;
- and
- a removable bearing arrangement for supporting one end of the carrier rod,
- wherein the carrier rod has a hydraulic clamping system for clamping a cylinder sleeve pushed onto the carrier rod,
- the hydraulic clamping system has a rotatable actuating member at the one end of the carrier rod, the rotatable actuating member is mounted in the removable bearing arrangement and includes a coupling for a tool,
- the hydraulic clamping system includes a plurality of hydraulic bushes,
- each of the plurality of hydraulic bushes has an annular chamber within a circumferential wall of the carrier rod,
- the annular chamber is connected to a pressure chamber and fillable with a hydraulic fluid,
- the removable bearing arrangement includes a tool holder, the tool holder holds the tool axially movably and rotationally rigidly on the removable bearing arrangement,
- the electronic control device is configured to:
- control an axial extension movement of the tool holder and thereby to engage the tool with the coupling, and
- activate the rotary drive to thereby rotate the carrier rod relatively to the tool, and
- the electronic control device is further configured to:
- rotate the carrier rod to a defined angle relative to the rotatable actuating member held by the tool when clamping and/or relieving the hydraulic clamping system, and/or
- monitor a torque generated by the rotary drive and, when the clamping and/or the relieving the hydraulic clamping system, terminate rotation of the carrier rod as soon as the torque reaches a predetermined threshold value.
13 more elements
A hydraulic carrier rod of a rotary printing machine in combination with an apparatus for actuating the hydraulic carrier rod, the apparatus comprising
- a rotary drive for the carrier rod;
- an electronic control device for the rotary drive;
- and
- a removable bearing arrangement for supporting one end of the carrier rod,
- wherein the carrier rod has a hydraulic clamping system for clamping a cylinder sleeve pushed onto the carrier rod,
- the hydraulic clamping system has a rotatable actuating member at the one end of the carrier rod, the rotatable actuating member is mounted in the removable bearing arrangement and includes a coupling for a tool,
- the hydraulic clamping system includes a plurality of hydraulic bushes,
- each of the plurality of hydraulic bushes has an annular chamber within a circumferential wall of the carrier rod,
- the annular chamber is connected to a pressure chamber and fillable with a hydraulic fluid,
- the removable bearing arrangement includes a tool holder, the tool holder holds the tool axially movably and rotationally rigidly on the removable bearing arrangement, and
- the electronic control device is configured to:
- control an axial extension movement of the tool holder and thereby to engage the tool with the coupling,
- activate the rotary drive to thereby rotate the carrier rod relatively to the tool,
- monitor a torque generated by the rotary drive, and,
- when clamping and/or relieving the hydraulic clamping system, terminate rotation of the carrier rod as soon as the torque reaches a predetermined threshold value.
12 more elements
A hydraulic carrier rod of a rotary printing machine in combination with an apparatus for actuating the hydraulic carrier rod, the apparatus comprising:
- a rotary drive for the carrier rod;
- an electronic control device for the rotary drive;
- and
- a removable bearing arrangement for supporting one end of the carrier rod,
- wherein the carrier rod has a hydraulic clamping system for clamping a cylinder sleeve pushed onto the carrier rod,
- the hydraulic clamping system has a rotatable actuating member at the one end of the carrier rod, the rotatable actuating member is mounted in the removable bearing arrangement and includes a coupling for a tool,
- the hydraulic clamping system includes a plurality of hydraulic bushes,
- each of the plurality of hydraulic bushes has an annular chamber within a circumferential wall of the carrier rod,
- the rotatable actuating member includes a screw,
- the carrier rod includes a plug on the one end of the carrier rod,
- the plug includes a pressure chamber,
- the screw goes into/out of the plug on the one end of the carrier rod to compress/decompress the pressure chamber,
- the removable bearing arrangement includes a tool holder, the tool holder holds the tool axially movably and rotationally rigidly on the removable bearing arrangement, and
- the electronic control device is configured to:
- control an axial extension movement of the tool holder and thereby to engage the tool with the coupling,
- activate the rotary drive to thereby rotate the carrier rod relatively to the tool,
- monitor a torque generated by the rotary drive, and,
- when clamping and/or relieving the hydraulic clamping system, terminate rotation of the carrier rod as soon as the torque reaches a predetermined threshold value.
15 more elements
Dependencies are inferred from the claim text.