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US 6,491,492 B1Granted
Batch sheet feeder
AssigneeLongford Equipment International Limited
InventorEdward J. Cook
Life of this patent
Estimating the term…
Abstract
A shingling nip roll is added between an infeed conveyor and a reciprocating table. The nip roll slows the speed of the sheets thereby reducing bruising and buckling as sheets are ejected to the table. Further, the trailing end of a dropped sheet is overlapped by a leading end of the next upstream sheet which assists in maintaining control of the dropped sheet as it drops onto the reciprocating table.
Claims21
A batch sheet feeder, comprising:
- a sheet feeding conveyor operating at a first speed;
- a shingling nip roll spaced downstream of a downstream end of said sheet feeding conveyor, said nip roll operating at a second speed slower than said first speed;
- a sheet support extending between said downstream end of said sheet feeding conveyor and said nip roll;
- a horizontally reciprocating table downstream and below said nip roll;
- a sheet sensor;
- and
- a controller responsive to said sheet sensor for counting sheets and for reciprocating said horizontally reciprocating table when a desired batch of sheets has been counted.
4 more elements
A sheet feeder comprising:
- a sheet feeding conveyor operating at a first speed,
- a shingling nip roll spaced downstream of a downstream end of said sheet feeding conveyor, said nip roll operating at a second speed slower than said first speed;
- a sheet support extending between said downstream end of said sheet feeding conveyor and said nip roll;
- a horizontally reciprocating table downstream and below said nip roll;
- a pair of side walls extending upwardly from said reciprocating table, said side walls defining a funnel-shaped top portion and a funnel-shaped upstream end portion for funnelling sheets onto said table in a stack.
2 more elements
A feeder, comprising:
- a sheet feeding conveyor operating at a first speed;
- a shingling nip roll spaced downstream of a downstream end of said sheet feeding conveyor, said nip roll operating at a second speed slower than said first speed;
- a sheet support extending between said downstream end of said sheet feeding conveyor and said nip roll;
- a horizontally reciprocating table downstream and below said nip roll;
- a travelling belt having a substantially vertical run extending between two spaced supports, said vertical run feeding downwardly toward said reciprocating table and positioned proximate an upstream end of said reciprocating table for urging ailing end of sheets downwardly onto said reciprocating table.
2 more elements
A feeder, comprising:
- a sheet feeding conveyor operating at a first speed;
- a shingling nip roll spaced downstream of a downstream end of said sheet feeding conveyor, said nip roll operating at a second speed slower than said first speed;
- a sheet support extending between said downstream end of said sheet feeding conveyor and said nip roll;
- a horizontally reciprocating table downstream and below said nip roll;
- a travelling belt having a substantially vertical run feeding downwardly toward said reciprocating table and positioned proximate an upstream end of said reciprocating table for urging trailing end of sheets downwardly onto said reciprocating table;
- an eccentric roll for acting against said vertical run of said travelling belt in order to intermittently jog said vertical run of said belt in a generally downstream direction whereby to tamp a trailing end of sheets stacked on said reciprocating table.
3 more elements
A feeder comprising
- a sheet feeding conveyor operating at a first speed;
- a shingling nip roll spaced downstream of a downstream end of said sheet feeding conveyor, said nip roll operating at a second speed slower than said first speed;
- a sheet support extending between said downstream end of said sheet feeding conveyor and said nip roll;
- a horizontally reciprocating table downstream and below said nip roll;
- a lockable slide mount for said nip roll such that a downstream position of said nip roll my be adjusted.
2 more elements
Dependencies are inferred from the claim text.