Apparatus for forming a gap in an imbricated stream of substanti

Details Apparatus for forming a gap in an imbricated stream of substanti Apparatus for forming a gap in an imbricated stream of substanti

1992-01-16

1992-10-27

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

By means to convey sheet

271202, 271182, 271302, 271197, 198462, 1984192, B65H 534

Patent

active

051582783

ABSTRACT:
A first conveyor is adjoined downstream, as viewed in a predetermined conveying direction for an imbricated product stream, by a gap-forming device. A gap is formed in the imbricated product stream by means of the gap-forming device which feeds the imbricated product stream to a second conveyor. The gap-forming device comprises a belt conveyor provided with two laterally spaced transport belts, as well as an accelerating conveyor arranged between the two transport belts. A conveyor belt of the accelerating conveyor comprises passages which are distributed over approximately one half of its length. At the region of the conveying-active path of the conveyor belt, the passages are in connection with a suction trough. In order to form a gap in the imbricated product stream, the conveyor belt is driven at a higher speed than the belt conveyor, and the suction trough is connected to a negative pressure source. As a result, the products lying on the accelerating conveyor at the beginning of gap formation are sucked onto the conveyor belt and accelerated by the latter, while the following or trailing products are further conveyed at a lower speed by means of the belt conveyor.

REFERENCES:
patent: 4534550 (1985-08-01), Reist
patent: 4585227 (1986-04-01), Muller
patent: 4948114 (1990-08-01), Bowman et al.
patent: 5050859 (1991-09-01), Payor
patent: 5054763 (1991-10-01), Achelpohl et al.

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