US 4,929,226 A · Process and apparatus for producing and conveying pack blanks

Abstract

When blanks for producing (cigarette) packs are made in the region of the packaging machine itself, especially by being severed from a web of material (12), the blank production must be matched to the performance of the packaging machine. For severing blanks (10, 11) from a web of material (12) having stampings, perforations, etc. drawing rollers (25, 26) and conveying rollers (33, 34), on the one hand, and tearing rollers (27, 28 and 35, 36) running at a higher speed, on the other hand are used. The blanks (10, 11) are torn off as a result of the difference in the conveying speed. In the simultaneous processing of two blanks (10, 11), units (23) comprising two blanks (10, 11) are first servered from the web of material (12) and these are then divided into individual blanks (10, 11) which are conveyed further, especially fed to a folding turret (20).

Claims11

Dependent claims

In a process for producing pack blanks (10, 11) by tearing the blanks (10, 11) from a web of material conveyed in a conveying direction (12), said blanks being defined by perforations in the web which run only transversely relative to the conveying direction in the web of material (12), the improvement comprising the steps of:

performing said tearing step by tearing off from the web of material (12) two of the blanks (10, 11), in succession in the conveying direction, as an attached unit (23);
then, severing the unit (23) into two individual blanks (10, 11) by exerting tensile force only in the conveying direction;
and then simultaneously feeding the two severed blanks (10, 11), transversely to the conveying direction of the web of material (12), to a folding unit (20).

In an apparatus for producing pack blanks (10, 11) by tearing off the blanks (10, 11) from a conveyed web of material (12), and feeding the blanks to a folding turret the blanks (10, 11) being defined by perforations that run only transversely to the conveying direction of the web of material (12);

and wherein a conveying means conveys the web of material (12) along a conveying track (17) in the conveying direction;
the improvement comprising:
two successive severing station means (18, 32) respectively provided with a first pair and a second and second pair of tearing rollers (27, 28 or 35, 36) the respective pairs having different drive speeds, of which the first severing station means (18) tears from the web (12) a unit (23) consisting of two attached blanks (10, 11), and of which the second severing station means (32) tears each unit into individual blanks (10, 11) by pulling only in the conveying direction;
said first pair of tearing rollers (27, 28) grasping the trailing blank (11) of the unit (23) to be severed and pulling it from the web, and said second pair of tearing rollers (35, 36) grasping the severed unit (23) in a region of the leading blank (10) and pulling it only in the conveying direction;
and
blank track means (19), running transversely relative to the conveying direction of the web of material (12), for feeding the severed blanks to the folding turret (10).

3 more elements

Dependencies are inferred from the claim text.

Process and apparatus for producing and conveying pack blanks

Life of this patent

Process and apparatus for producing and conveying pack blanks

Life of this patent

Abstract

Claims11