Arrangement and method for adjustment of rail at a conveyor

A method for guide rail adjustment in an arrangement for guide rail adjustment on a conveyor, the arrangement comprising:

• at least one set of guide rails,
• a plurality of sets of mounting elements, which each support at least one moveably suspended guide rail, and
• means for simultaneous individual adjustment of said sets of mounting elements, the means permitting simultaneous adjustment of the position of the guide rails moveably supported by the mounting elements, in which said means for simultaneous adjustment of said plurality of sets of mounting elements comprises a plurality of synchronous or stepping motors, which are fed from a common voltage source, the method comprises applying a feed voltage to all synchronous or stepping motors in said set of synchronous or stepping motors, the moveable guide rails being moved simultaneously at a common speed;
• wherein simultaneous calibration of the adjustment of all moveably arranged guide rails supported by said mounting elements is performed through the following steps:
• applying the feed voltage to all synchronous or stepping motors in said set of synchronous or stepping motors, simultaneously bringing about the movement of the moveable guide rails towards a stop position situated on each mounting element,
• continuing to apply the feed voltage to said synchronous or stepping motors, the guide rails being braked at a stop position and held for a period of time, said means for simultaneous adjustment of said set of mounting elements ensuring that the position of all moveable guide rails has been calibrated,
• wherein each mounting element in said set of mounting elements comprises a stop device designed to mechanically prevent movement of a moveable guide rail arranged in the mounting element, said means for simultaneous individual adjustment of said set of mounting elements simultaneously calibrating the adjustment of all moveably arranged guide rails by moving all guide rails into contact with said stop devices.

A conveyor guide rail, comprising:

• at least one set of guide rails,
• a plurality of sets of mounting elements to moveably support the sets of guide rails, and
• an adjuster comprising a set of motors, which are fed from a common voltage source, operably connected to the plurality of sets of mounting elements, and selected from a group consisting of a synchronous motor, the adjuster to permit simultaneous adjustment of a position of the at least one set of guide rails moveably supported by the mounting elements;
• wherein said common voltage source is to deliver a first feed voltage with a first phase for driving the set of motors in a first direction of rotation and to deliver a second feed voltage with a second phase to drive the set of motors in a second direction of rotation.