Apparatus for braking a succession of sheets to be stacked
AssigneeJagenberg Aktiengesellschaft
InventorsEgbert Most, Ingo Becker, Ewald G. Welp, Albrecht Blume
Life of this patent
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Abstract
A brake for a sheet feed to a stacking site in which the sheets are engaged by a belt drive from the location at which they are cut from a continuous web. The brake device has an endless belt with a brake stretch parallel to the travel plane of the sheets or declined downward slightly therefrom. The brake has at least one element with a shank over the belt and projecting above the plane at the inlet side of the braking device. The rear edge of the sheet is thus engaged by the shank and the brake belt is decelerated so that the sheet is delivered to the stack at the lower speed.
Claims19
An apparatus for braking a succession of sheets, comprising:
- a belt conveyor feeding a succession of sheets in a feed plane;
- at least one braking belt guided in a closed path below said plane and having an upper stretch extending along said plane in a feed direction of said sheets;
- at least one clamping element affixed on an outer side of said braking belt and comprising a clamping shank extending in said direction, engageable over a rear edge of a sheet to be gripped by the clamping element and adapted to press toward said braking belt to hold a clamped sheet thereagainst, said shank upon passage onto said upper stretch including an acute angle with said braking belt on opening of said clamping element and having a free end projecting above said feed plane;
- and
- a nonuniform drive operatively connected with said braking belt for initially driving same at a higher speed upon engagement of said clamping element with said rear edge of a respective sheet and then at a reduced speed for delivery of the sheet.
Dependencies are inferred from the claim text.