Importance

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Abstract

The dosing method and apparatus meters predeterminate quantities of fiber flocks per unit of time by means of two feed devices arranged at the lower end of a flock chute and which form therebetween a conveying gap and an opening roll is preferably arranged beneath the feed devices. The feed devices selectively comprise either: (a) a rotatable feed roll and an oppositely situated slide; or (b) a rotatable feed roll and an oppositely situated driven or freely revolving belt; or (c) two oppositely situated revolving belts, wherein at least one of the revolving belts is driven and the other either revolves or is likewise driven; or (d) a driven revolving belt and a oppositely situated slide; or (e) a rotatable feed roll and an oppositely situated freely rotatable further feed roll; or (f) a rotatable feed roll and an oppositely situated feed trough; or wherein, for all of the indicated possible embodiments (a) to (f) the conveying gap converges to a minimum width and at least one of the feed devices is pre-biased in the direction of the other feed device and is movable away from the other feed device by the force of the fiber flocks such that the spacing between both of the feed devices is changed in the sense that there is altered the minimum width x of the conveying gap, there is selectively determined the minimum width of the conveying gap or a value proportional thereto, and the surface velocity u of the driven feed device or feed devices is regulated such that at least the average value of the product x.multidot.u of this minimum width x and the surface velocity u remains essentially constant.

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