DEVICE FOR PIECE SEPARATION FROM STACK AND DISPENSING NEWSPAPERS AND SIMILAR PRODUCTS Russian patent published in 2004 - IPC

FIELD: engineering of newspapers selling machines.

SUBSTANCE: device has lifting mechanism for displacing stack of papers, stop for limiting raising of uppermost paper in stack and dispensing mechanism, which is placed above the stack and is used for moving uppermost paper relatively to stack by drive in plane of uppermost paper sheet until a portion of it appears in output slit by holder in form of roller. Roller is jointly mounted in a carriage. A portion of carriage with roller is supported below stop in contact with it by spring. Stop provides for limiting raising of roller and upper paper in stack pressed to roller by lifting mechanism with force no more than necessary for piece separation of thinnest paper sheets without movement of carriage from stop, said sheets being in separate stack, from several papers, for dispensing of which the device is meant. Roller is mounted on the axis placed between output slit and geometric plane passing though axis of joint connection of carriage perpendicularly to upper side of stack, lower and in parallel to axis of joint connection. In case of increase of braking friction force between uppermost and following papers from effect of external factors and in case of separation of thicker papers roller has capability for rolling without slippage during each dispensing along upper paper fixed relatively to stack aside from output slit, pressing on stack and increasing force of engagement of roller with upper paper and deflecting carriage from stop and increasing due to counteraction of support spring to carriage deflection of force of effect of roller in direction towards output slit until overpowering this component of braking friction force. Roller moves uppermost paper towards output slit and though it at speed equal to linear speed of movement of roller surface being pressed against paper. Also present is possibility for stopping further deviation of roller from slit and downwards and increasing friction forces acting from side of upper moving paper on paper below it, more than value set during that, not enough of moving it. Roller also has capability for deviating from slit and upwards into basic position of carriage with stop under effect of lower paper and support spring during extraction of upper paper from under freely rotating roller and from output slit after stopping of drive.

EFFECT: higher efficiency.

1 dwg