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US 5,277,571 AGranted
Apparatus for perforation of a sheet material
AssigneeGeorge Schmitt & Company, Inc.
InventorRichard J. Brining
Life of this patent
Estimating the term…
Abstract
An apparatus for perforating a sheet material provides for a perforating die located intermediate two orbital rollers. The two orbital rollers move in orbital paths in the same orbital direction at the same speed and in positions which are 180 degrees apart. Each roller acts as a temporary storage input and output in opposite phase from each other so that incoming sheet material is alternately stored and dispensed as a loop on the orbital roller. Since the rollers are out of phase, this permits a segment of the sheet material to be stopped intermediate the orbital rollers so that the perforating die can act on the stopped segment.
Claims24
Apparatus for perforating a continuous roll of a sheet material, comprising:
- a feed mechanism for continuously moving the sheet material from an entry of said apparatus to an exit of said apparatus, said sheet material being moved at a constant and equal speed at said entry and said exit of said apparatus;
- a die mechanism having a moving die and a mating bed, said moving die being provided with a plurality of means for perforating, said moving die being movable by reciprocating motion toward said mating bed sufficiently such that said means for perforating act on and perforate the sheet material, said moving die being further movable away from said mating bed such that said moving die and said means for perforating are disengaged from the sheet material;
- a first orbital roller for receiving the sheet material having two ends, said first orbital roller having an offset mounting at each end, said offset mountings permitting said first orbital roller to be movable in an orbital path about an axis of said first orbital roller offset mountings;
- a second orbital roller for receiving the sheet material having two ends, said second orbital roller having an offset mounting at each end, said offset mountings permitting said second orbital roller to be movable in an orbital path about an axis of said second orbital roller offset mountings;
- said offset mountings being adjustable to vary a radius extending from said axes of said offset mountings and center axes of said orbital rollers;
- said first orbital roller and said second orbital roller being driven in their respective orbital paths in the same orbital direction at the same radius and speed and in positions which are 180 degrees apart, whereby when said first and second orbital rollers are located a maximum distance apart, a segment of said sheet material intermediate said first and second orbital rollers is stopped;
- and
- a common drive mechanism for said first and said second orbital rollers and said reciprocating moving die, said common drive mechanism synchronizing the reciprocating motion of the moving die to the stoppage of the sheet material to permit said moving die to perforate said segment of the sheet material intermediate said first and second orbital rollers when the sheet material is stopped.
5 more elements
Apparatus for perforating a continuous roll of a sheet material, comprising:
- a feeding mechanism for continuously moving the sheet material from an entry of said apparatus to an exit of said apparatus;
- means for perforating the sheet material intermediate said entry and exit of said apparatus;
- an intermittent feed apparatus intermediate said entry and said exit of said apparatus for receiving said sheet material and periodically stopping movement of a segment of the sheet material in a region of said perforating means, said intermittent feed apparatus including
- a first orbital roller having two ends, said first orbital roller having an offset mounting at each end, said offset mountings permitting said first orbital roller to be movable in an orbital path about an axis of said first orbital roller offset mountings,
- a second orbital roller having two ends, said second orbital roller having an offset mounting at each end, said offset mountings permitting said second orbital roller to be movable in an orbital path about an axis of said second orbital roller offset mountings,
- said first orbital roller and said second orbital roller being driven in their respective orbital paths in the same orbital direction at the same speed and in positions which are 180 degrees apart, and
- said sheet material segment being stopped intermediate said first and second orbital rollers when said first and second orbital rollers are located a maximum distance apart;
- means for synchronizing activation of said perforation means to the stoppage of the sheet material to perforate the segment of the sheet material when the segment of sheet material is stopped.
5 more elements
Apparatus for perforating a continuous roll of a sheet material, comprising:
- a feeding mechanism for continuously moving the sheet material from an entry of said apparatus to an exit of said apparatus;
- a first orbital roller having two ends, said first orbital roller having an offset mounting at each end, said offset mountings permitting said first orbital roller to be movable in an orbital path about an axis of said first orbital roller offset mountings;
- a second orbital roller having two ends, said second orbital roller having an offset mounting at each end, said offset mountings permitting said second orbital roller to be movable in an orbital path about an axis of said second orbital roller offset mountings;
- said first orbital roller and said second orbital roller being driven in their respective orbital paths in the same orbital direction at the same speed and in positions which are 180 degrees apart;
- said sheet material segment being stopped intermediate said first and second orbital rollers when said first and second orbital rollers are located a maximum distance apart;
- a die mechanism located intermediate said first and second orbital rollers, said die mechanism having a moving die and a mating bed, said moving die being provided with a plurality of means for perforating, said moving die being movable by reciprocating motion toward said mating bed sufficiently such that said means for perforating act on and perforate the sheet material, said moving die being further movable away from said mating bed such that said moving die and said means for perforating are disengaged from the sheet material;
- and
- means for synchronizing the reciprocating motion of the moving die to the stoppage of the sheet material to perforate said segment of the sheet material when the sheet material is stopped.
5 more elements
Dependencies are inferred from the claim text.