Bobst Sa

Bobst Mex Sa

Oskar Dittli

Pierre Robadey

Michel Mermet

A very compact play-free bearing unit includes a bearing that runs without play while having a reasonably large play when assembling and during disassembly of the bearing unit from its axle. The bearing unit uses three bearings, one of which is mobile, and thanks to a preloading mechanism the play is removed when loaded. Thanks to an amplification lever, the preloading unit is able to function either with a pneumatic actuator or with a hydraulic actuator.

Bearing unit with three bearings including a preload bearing, in particular for a paper processing tool

A unit for separating a pre-cut-out substrate into a plurality of separate sub-substrates (). The unit includes upstream () and downstream () transverse guides; conveyor ramps, which convey the pre-cut-out substrate and the separate sub-substrates (), the ramps are slidably and pivotably mounted on the guides (). Upstream and downstream locks holds each ramp () in a locked position. A movable element supports upstream and downstream unlocking devices for engaging the upstream and downstream locking devices to release the ramps (). Upstream and downstream grasping devices grasp and drive the ramps () along the upstream () and downstream () guides to arrange the ramps in a fan-like configuration.

Unit for separating a pre-cut substrate positioned downstream from a cutting unit

A device for stacking sheets delivered on a first conveyor in a plurality of parallel streams of overlapping sheets, includes a second conveyor moving slower than the first conveyor that compacts the streams as they exit the first conveyor; a third conveyor that receives the streams from the second conveyor; and a plurality of stackers, each aligned with one of the streams exiting the third conveyor, formed of endless belts positionable horizontally which cooperate with stop members to stack the incoming sheets. Completed stacks are then moved downstream on the belt. When sheets in a stream are determined to be defective; its belt for that stream is tilted, and the stream falls onto a fourth conveyor for disposal. A spacer introduces spacing into each stream to delineate portions of the streams which will form successive stacks, includes adjusting devices that lengthen and shorten the second and third conveyors, and a device selectively operable to stop passage of the streams from the second conveyor to the third conveyor. The adjusting devices are coupled to simultaneously lengthen one of the conveyors and to shorten the other conveyor. A drive mechanism for the third conveyor moves the third conveyor at the same speed as the second conveyor receiving the streams from the second conveyor, and faster than the second conveyor when delineated portions of the streams are being delivered to the stackers.

Delivery and ejection device for flat elements into a machine working them

A rotating cutting apparatus has an arrangement for controlling and finishing the cutting which is arranged between a cutting station and a receiving station. This arrangement includes a conveying arrangement for box blanks, an arrangement for acting on the cut flaps of the box blanks to bend them out of the plane of the blank and an arrangement for pressing the flaps back into the plane of the blank.

Growing community of inventors

Lausanne, Switzerland

Oskar Dittli