Blank feeder and method for controlling the same

Details Blank feeder and method for controlling the same Blank feeder and method for controlling the same

1990-08-17

1991-09-24

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

Separator and conveyor

271 99, 271112, 271114, 271116, 271270, 271137, 271139, 4147977, 4147979, B65H 508

Patent

active

050508520

ABSTRACT:
A blank feeder for feeding blanks. It has a feed table on which a plurality of blanks are stacked, a suction unit provided under the table to suck the lowermost one of the stack downward, a motor-driven first feed rolls mounted in the suction unit and adapted to feed the lowermost blank in contact therewith, and second feed rolls located downstream of the first feed rolls and adapted to be driven at a constant speed. The first feed rolls are accelerated from zero speed to the speed of the second feed rolls before the front end of the blank reaches the second rolls, then driven synchronized with the second feed rolls, and decelerated to zero speed again by the time the next cycle begins. A kicker for pushing out the blank may be provided. The kicker is moved forward so as to be synchronized with the second feed rolls before the front end of the blank reaches the second feed rolls. Once synchronized, this state is maintained until the rear end of the blank gets off from the kicker.

REFERENCES:
patent: 3173682 (1965-03-01), Shields
patent: 4494745 (1985-01-01), Ward, Sr. et al.
patent: 4519601 (1985-05-01), Watanabe
patent: 4630812 (1986-12-01), Yano et al.
patent: 4632381 (1986-12-01), Cair et al.
patent: 4889331 (1989-12-01), Sardella
patent: 4896872 (1990-01-01), Sardella

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