Patent Publication Number: US-2015080199-A1

Title: Method of, and apparatus for, processing a moving, printed material web

Description:
CROSS-REFERENCE TO THE RELATED APPLICATIONS 
     This application is a divisional application of U.S. patent application Ser. No. 12/453,661, filed May 18, 2009, which claims priority to European Patent Application No. 08 009 232.3, filed May 20, 2008, the entire contents of which are incorporated herein by reference. 
    
    
     BACKGROUND 
     The present invention relates to methods of, and apparatus for, processing a printed material web moving in an advancement direction. The material web is preferably printed by a digital printer. 
     It is known for endless material webs printed in a digital printer to be processed into end products in a processing line following the digital printer. It is desirable for end products of various types to be produced using the same processing line. 
     SUMMARY 
     One object of the present invention, is to provide method and apparatus which make it possible for printed material webs to undergo different kinds of processing in a time-saving and space-saving manner. 
     Two processing sections are used on an optional basis and allow a printed material web to undergo different kinds of processing, and make it possible for products of different types to be produced in one and the same processing line. Arranging the processing sections one above the other shortens the processing line, which gives rise to a space-saving construction. Using a folding mechanism of roof-like design for the longitudinal folding of the material web also contributes to such a space-saving construction. Changeover from one processing mode to the other processing mode, i.e. changeover from processing of the material web in the one processing section to processing in the other processing section, can be done easily in that, when the one processing section is not in use, it is moved, preferably by lateral displacement, into a non-operational position outside the movement path of the material web. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIGS. 1 and 2  are a side view and a plan view, respectively, of the apparatus according to an embodiment of the invention during longitudinal folding of the material web, 
         FIG. 3  is a schematic of the folded material web as seen in the direction of the arrow A in  FIG. 2 , 
         FIGS. 4 and 5  show a side view and a plan view, respectively, of the apparatus according to an embodiment of the invention during longitudinal cutting of the material web and positioning of the material-web strands one above the other, 
         FIG. 6  shows two material-web strands located one above the other, as seen in the direction of the arrow B in  FIG. 5 , 
         FIG. 7  shows a front view of the two processing arrangements arranged one above the other, with the upper processing arrangement in its operating position, 
         FIG. 8  shows a front view of the two processing arrangements arranged one above the other, with the upper processing arrangement in a non-operational position, 
         FIGS. 9 and 10  show a side view and a plan view, respectively, of the apparatus according to an embodiment of the invention for the longitudinal folding of the material web, 
         FIG. 11  shows the folded product as seen in the direction of the arrow C in  FIG. 10 , and 
         FIG. 12  shows a variant of the folded product in the direction of the arrow C in  FIG. 10 . 
     
    
    
     DETAILED DESCRIPTION OF EMBODIMENTS 
     The construction of the processing apparatus  1  according to the invention will be described in the first instance with reference to  FIGS. 1 ,  2  and  4 ,  5 . 
     This processing apparatus  1  has a first processing arrangement  2  with a first processing section  3  and a second processing arrangement  4  with a second processing section  5 . The processing arrangement  2  belongs to a first processing unit  6 , while the second processing arrangement  4  belongs to a second processing unit  7 . The two processing units  6  and  7  are arranged one above the other and have a common entry  8  for the material web  9  which is to be processed. 
     The material web  9 , which runs into the processing apparatus  1  through the entry  8 , runs through a pair of braking rollers  10 , which has a merely schematically indicated longitudinal-cutting means  11  arranged downstream of it, as seen in the running direction D of the material web  9 . As  FIG. 5  shows, this longitudinal-cutting means  11  has a web-cutting unit  11   a  which serves for the longitudinal cutting of the material web  9  along a line parallel to the advancement direction D. The longitudinal-cutting means  11  also includes border-cutting units  11   b  and  11   c  which serve, if required, to cut away the border portions  9 ′ and  9 ″ of the material web  9 . A deflecting roller  12  is arranged downstream of the longitudinal-cutting means  11 . The pair of braking rollers  10 , the longitudinal-cutting means  11  and the deflecting roller  12  are accommodated in the lower processing unit  7  and belong both to the first processing section  3  and the second processing section  5 . 
     The first processing section  3  also has a pair of transporting rollers  13  and a perforating unit  14 , which are both accommodated in the upper processing unit  6 . The perforating unit  14  serves to produce longitudinal perforations  15  (tear-off perforations). It is also possible, however, for the perforating unit  14  to be set such that the line of perforations  15  is located along the envisaged folding line. The perforating unit  14  has arranged downstream of it a scoring unit  16  which provides the material web  9  with scoring  17  running along the envisaged folding line. It is also possible, however, to dispense with the scoring unit  16 . In this case, folding takes place without scoring  17 . As  FIG. 2  shows, this scoring  17  (and thus the folding line) may be offset laterally in relation to the center line of the material web  9 . Provided downstream of the scoring unit  16 , as seen in the advancement direction D of the material web  9 , is a web-guiding roller  18 , which is followed by a roof-like folding mechanism  19 , which is indicated in  FIG. 1 . This folding mechanism  19  serves for folding the material web  9  along a folding line in a manner known per se. The folded material web runs past a second perforating unit  20 , which produces longitudinal perforations  21  (tear-off perforations) which pass through the two material-web strands  9   a,    9   b  located one above the other. It is also possible, however, for this second perforating unit  20  to be dispensed with. Arranged downstream of the perforating unit  20  is a pair of transporting rollers  22 , which is followed by a compensating roller  23  which is arranged in the region of the exit  24  from the processing apparatus  1 . A pair of drawing rollers  25  is also provided in this exit region  24 . In the case of the exemplary embodiment shown in the figures, this pair of drawing rollers  25  is part of a downstream cross-cutting means, which is not shown in any more detail. It is also possible, however, for this pair of drawing rollers  25  to be configured as part of the processing apparatus  1 . 
     The above described structural elements  13 ,  14 ,  16 ,  18 ,  20 ,  22  and  23  belonging to the first processing section  3  are accommodated in the upper processing unit  6 . 
     As can be gathered, in particular, from  FIGS. 4 and 5 , the lower, second processing arrangement  4 , in addition to the pair of braking rollers  10 , the longitudinal-cutting means  11  and the deflecting roller  12 , which in the second processing arrangement  4  serves only as a web-guiding roller, also includes angle bars  26 , via which the one material-web strand  9   e  is guided, and the web-guiding roller  27 , which is arranged in the region of the exit  24 . 
     The two processing arrangements  2  and  4  arranged one above the other are used alternately—as is yet to be described. If the material web  9  is to be processed in the upper processing section  2 , that is to say folded, then the upper processing unit  6  is located in its operating position, which is shown in  FIG. 7  and in which it is located above the lower processing unit  7  and thus in the movement path of the material web  9 . 
     If, in contrast, the material web  9  is to be processed in the lower, second processing section  5 , then the upper processing unit  6  is moved into its non-operational position, which is illustrated in  FIG. 8 . This is done by the upper processing unit  6  being displaced laterally in a direction E, which runs at right angles to the advancement direction D of the material web  9  as is illustrated in  FIG. 8 . In this non-operational position, the upper processing unit  6  is thus located to the side of the movement path of the material web  9 . 
     A description will now be given hereinbelow of how the material web  9  is processed either in the upper, first processing section  3  or in the lower, second processing section  5 . 
       FIGS. 1-3 , then, will be used to explain the processing of the material web  9  in the upper processing section  3 . 
     As  FIG. 1  shows, the material web  9  is fed in a loop S to the entry  8  of the processing apparatus  1 . The tensile stressing in the material web  9  running through the processing apparatus  1  is produced by the pair of braking rollers  10  and the pair of drawing rollers  25 . As the material web  9  runs past the longitudinal-cutting means  11 , the border portions  9 ′ and  9 ″ ( FIG. 2 ) are severed. The web-cutting unit  11   a  is not activated here. The material web  9  is then guided upwards, via the deflecting roller  12 , into the upper processing unit  6 . The material web  9  then runs through the pair of transporting rollers  13  and is subsequently provided with longitudinal perforations  15  by means of the perforating unit  14 . The scoring unit  16  which follows provides the material web  9 , along the envisaged folding line, with longitudinal scoring  17  which, in the case of the exemplary embodiment shown is offset laterally in relation to the center line of the material web  9 . Downstream of the web-guiding roller  18 , the material web  9  runs over the roof-like folding mechanism  19 , which results in the material web  9  being folded along the scoring  17 . The material web  9  is guided via the folding mechanism  19  under tensile stressing. This tensile stressing is produced by the pair of transporting rollers  13 , arranged upstream of the folding mechanism  19 , and the pair of transporting rollers  22 , arranged downstream of the folding mechanism  19 . By means of the perforating unit  20 , the two material-web strands  9   a,    9   b  of the folded material web  9 , the strands being located one above the other, are provided with longitudinal perforations  21 . The folded material web  9  passing out of the first, upper processing units  6  is guided via the compensating roller  23  and passes to the pair of drawing rollers  25 , which, as has already been mentioned, belongs to the following processing unit. 
       FIG. 3  shows, the narrower material-web strand  9   b  is located beneath the wider material-web strand  9   a.  The fold here is located on the left-hand side, as seen in the advancement direction D of the material web  9 . By virtue of the folding mechanism  19  being changed over, it is also possible for the material web  9  to be folded such that the fold is located on the right-hand side, as seen in the advancement direction D of the material web  9 . By virtue of the scoring unit  16  and of the folding mechanism  19  being adjusted in a direction running at right angles to the advancement direction D of the material web  9 , it is possible to change the position of the scoring  17  and of the folding line. The width of the material-web strands  9   a  and  9   b  can be adjusted in this way. 
     If the material web  9  is then to be processed, rather than in the first processing section  3  as described, in the lower, second processing section  5  ( FIGS. 4-6 ), then the upper processing unit  6  is displaced into the non-operational position as is shown in  FIGS. 7 and 8  and has already been described with reference to these figures. If the material web  9  is still located in the first, upper processing section  3 , then it is necessary during this changeover, prior to the displacement of the upper processing unit  6 , for the material web  9  to be severed in the region of the deflecting roller  12  and introduced into the second processing section  5 . 
     In the case of the material web  9  being processed in the lower, second processing section  5 , as shown in  FIGS. 4-6 , the material web  9  is likewise fed in a loop S to the entry  8  of the processing apparatus  1 . Transportation of the material web through the processing section  5  under tensile stressing is also effected here by the pair of braking rollers  10  and the pair of drawing rollers  25 . During passage through the longitudinal-cutting means  11 , the border-cutting units  11   b,    11   c  cut away the border portions  9 ′,  9 ″ and the web-cutting unit  11   a  separates the material web  9 , along a line parallel to the advancement direction D, into two material-web strands  9   d  and  9   e  ( FIG. 5 ). The one material-web strand  9   d  runs through the second processing section  5  along an essentially rectilinear movement path, whereas the material-web strand  9   e  located alongside it is guided via angle bars  26  such that the right-hand material-web strand  9   e,  as seen in the advancement direction D, ends up located beneath the left-hand material-web strand  9   e,  as seen in the advancement direction D, as seen in  FIG. 6 . It is also possible, however, for the material-web strand  9   e  to be guided via the angle bars  26  such that this material-web strand  9   e  ends up located above the other material-web strand  9   d.  This operation of the two material-web strands  9   d,    9   e,  which are originally located one beside the other, being positioned one above the other is known per se. The material-web strands  9   d,    9   e  located one above the other run past the web-guiding roller  27  and reach the pair of drawing rollers  25 . 
     It is also possible to separate the material web  9  in the longitudinal-cutting means  11  into more than two material-web strands and then to position these material-web strands one above the other. 
       FIGS. 9-12  show another possible way of processing the material web  9  in the upper, first processing section  3 . In the case of this embodiment, the material web  9 , in the longitudinal-cutting means  11  is not only trimmed along the border, but separated into two material-web strands  9   a  and  9   c  by means of the web-cutting unit  11   a.  The material-web strand  9   a  runs through the processing section  3  in the same way as has been described with reference to  FIGS. 1 and 2 . That is to say, the material-web strand  9   a  is provided with longitudinal perforations  15  and with scoring  17 . In contrast, the material-web strand  9   c  is guided from the deflecting roller  12  directly to the folding mechanism  19  and, upstream of this folding mechanism  19 , is brought together with the other material-web strand  9   a  from beneath. As  FIG. 11  shows, by virtue of the material-web strand  9   a  being folded, the material-web strand  9   c  is incorporated in the folded material-web strand  9   a.  As can be gathered from  FIGS. 10 and 11 , the material-web strand  9   a  in the non-folded state is approximately double the width of the other material-web strand  9   c.    
     If, however, the material web  9  is divided up into two material-web strands  9   a,    9   c  of approximately equal width and the material-web strand  9   c  is fed to the folding mechanism  19  in alignment with the material-web strand  9   a,  this gives rise to the end product which is illustrated in  FIG. 12 , and in which both material-web strands  9   a  and  9   c  are folded. 
     In the case of the embodiment which is shown in  FIGS. 9 and 10 , the perforating unit  20  has been done away with. It goes without saying, however, that it is also possible, if required, for such a perforating unit  20  to be provided for this embodiment. 
     It is, of course, also possible for the material web  9  to undergo processing steps other than those described in the first processing section  3  or second processing section  5 . 
     In the case of a further variant, a further folding unit may be provided in the processing apparatus  1  downstream of the folding mechanism  19  or downstream of the angle bars  26  as seen in the advancement direction D, in order for the material web  9  which has already been folded to be folded again and/or for the two material-web strands  9   d,    9   e  located one above the other to be folded. 
     It has been described with reference to  FIGS. 7 and 8  that the upper processing unit  6  is moved out of the movement path of the material web  9  by lateral displacement. It is also possible, however, for this first processing unit  6  to be moved into the non-operational position by displacement in the upward direction. 
     In the case of the exemplary embodiments shown, the processed material web  9  leaving the processing apparatus  1  is fed to a cross-cutting apparatus. Of course, it is also possible, instead of such a cross-cutting apparatus, to provide processing modules of other types.