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Abstract

An apparatus of the tobacco industry for the rejection of defective rod-like articles from a mass flow of rod-like articles, comprising a monitoring unit (100) adapted to optically determine geometrical parameters of rod-like articles (R), and at least one rejecting unit (200) adapted to remove a rod-like article from the mass flow (M) of rod-like articles (R), wherein the mass flow (M) being transported on the conveyor (10), such unit (200) being situated behind the monitoring unit (100) with reference to the direction (T) of the mass flow (M) of rod-like articles (R). The apparatus is characterised in that the monitoring unit (100) has optical recorders (101) recording images of opposite side surfaces of the mass flow (M) of rod-like articles (R) on a conveyor (10) wherein said side surfaces are formed by front surfaces or rod-like articles (R). The apparatus comprises the controller (300) which basing on the recorded images, using the criteria concerning geometrical parameters of the opposite front surfaces of rod-like articles (R), identifies defective rod-like articles (Rd) in the mass flow (M), and determines the position of the defective rod-like articles (Rd) in the mass flow (M), and the rejecting unit (200) comprises at least one rejecting element (201, 203, 204, 205, 205′) adapted to reject the defective rod-like article (Rd), the rejection unit (200) being mounted in such a way that it moves along together with the mass flow (M) in a position enabling it to reject the defective rod-like article (Rd).

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First Claim