Patent ID: 8241454

Claim:
A corrugating machine for producing corrugated cardboard, comprising a. at least three splicing devices ( 3 , 4 , 74 ) for providing at least three continuous webs of material ( 13 , 21 , 65 ); b. at least one corrugating device ( 5 ) for producing at least one corrugated web ( 23 ) from at least one of the webs of material ( 21 ); c. at least one first production device ( 6 ) for joining the at least one corrugated web ( 23 ) to at least another web of material ( 13 ) to form at least one web of single-faced corrugated cardboard ( 2 ); d. at least one second production device ( 61 ) for joining the at least one web of single-faced corrugated cardboard ( 2 ) to at least another web of material ( 65 ) to form at least one web of double-faced corrugated cardboard ( 66 ); e. at least one storage device ( 34 ) for temporarily storing the at least one web of single-faced corrugated cardboard ( 2 ), the storage device ( 34 ) being disposed between the production devices ( 6 , 61 ); f. at least one marking device ( 39 ) for applying at least one color mark ( 40 ) to at least one of the webs ( 2 , 13 , 21 , 23 ), the marking device ( 39 ) being disposed upstream of the at least one storage device ( 34 ) when seen in a transport direction ( 35 ), wherein the at least one marking device ( 39 ) is designed such that a coloring agent ( 41 ) is applicable to create a color mark ( 40 ) by rubbing off on at least one of the webs ( 2 , 13 , 21 , 23 ), the coloring agent ( 41 ) being present in solid form, wherein the at least one marking device ( 39 ) comprises a piston-cylinder unit comprising a cylinder ( 42 ) and a piston ( 44 ) that is displaceable therein along a direction of displacement ( 43 ), said piston having a holder with a recess against which said coloring agent abuts, and the holder being located inside the cylinder, and wherein the at least one marking device ( 39 ) is disposed relative to one of the webs of material ( 21 ) such that the direction of displacement ( 43 ) is substantially perpendicular to a plane spanned by said web of material ( 21 ) in the vicinity of the at least one marking device; g. at least one detection device ( 60 ) for detecting the at least one color mark ( 40 ), the detection device ( 60 ) being disposed downstream of the at least one storage device ( 34 ) when seen in the transport direction ( 35 ); h. at least one electronic control device ( 86 ) for determining a web length (LB) of the at least one temporarily stored web of corrugated cardboard ( 2 ) by means of the at least one applied and detected color mark ( 40 ); i. at least one cross-cutting device ( 82 ) for cutting the at least one web of double-faced corrugated cardboard ( 66 ) in dependence of the determined web length (LB); and j. a support component ( 55 ) comprising a roller mounted for rotation disposed relative to the at least one of the webs of material ( 21 ) opposite to the marking device.