Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H23/00—Registering, tensioning, smoothing or guiding webs
  • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
  • B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
  • B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
  • B65H23/1882—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling longitudinal register of web
  • B65H23/1886—Synchronising two or more webs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H2701/00—Handled material; Storage means
  • B65H2701/10—Handled articles or webs
  • B65H2701/18—Form of handled article or web
  • B65H2701/186—Several articles or webs processed together
  • B65H2701/1864—Superposed webs

Definitions

• the invention relates to a method and a device suitable for executing the method for longitudinal register-controlled finishing and merging of several different paper webs according to the preamble of claims 1 and 11 respectively.
• a "paper web” in the sense of the invention is understood to mean any material which is in web form.
• a web can consist, for example, of paper or a foil material, for example a plastic material.
• the paper web can already be pre-processed. Examples of preprocessing are the printing and coating of individual paper webs or the bringing together of several individual paper webs into a new, multi-layer paper web. - t
• finishing of a paper web in the sense of the invention means any form of processing a paper web, examples of finishing processes being the printing, coating or embossing of patterns, folding, punching or punching, numbering and / or personalizing longitudinal sections of the Paper web, the creation of address windows and, if necessary, their covering, for example with transparent foils, and the application of labels, paper or plastic cards or sample packets may be mentioned.
• “Merging” individual paper webs in the sense of the invention means arranging the individual paper webs one below the other, which are separate and independent have been ennobled from each other.
• the term "arrange with one another” is normally understood here to mean that the paper webs are brought into direct contact with one another. In special applications, however, the paper webs can also remain at a certain distance from one another, but without them still moving relative to one another. After the merging, the paper webs can run through a further, common processing line.
• the paper web is provided with markings which are applied to the paper web in the longitudinal direction at regular intervals, advantageously in register with the longitudinal register. These marks are made by one
• the web scanner is registered and the signals generated by the web scanner enable a further precise processing of the paper web by means of a corresponding control of the web feed.
• the control of the web feed 5 acts, for example, on the drive of drawing rollers, which are arranged behind the processing line, as viewed in the direction of travel of the paper web, or braking on unwinding rollers, which are arranged between the rolled up or folded supply of the paper web to be finished and the processing line.
• the various paper webs are fed from a supply drum via a pair of take-off rollers serving as the first tension control unit into web-specific finishing lines, where they are individually and independently finished, possibly brought together via deflection rollers and fed to a common processing line 0.
• a pulling unit is arranged in the common processing line, preferably after the web-specific finishing lines and immediately before the common processing line, by means of which in the longitudinal direction in all paper webs between the take-off rollers and the pulling unit the paper web is built up essentially the same tension for all paper webs.
• the pull rollers are preferably designed such that there is a substantially constant tension across the full width of the respective paper webs.
• the pulling unit is preferably also designed as a pair of pulling rollers made of rubber.
• the common feed speed of the paper webs and thus the processing speed is determined via the speed of rotation of the drawing rollers. Markings are applied to the paper webs at regular intervals, which are registered with web buttons.
• the take-off rollers are controlled by a control unit controlled by the signals of the web buttons. The take-off rollers are essentially braked and the web tension prevailing on the web-specific finishing section between the take-off rollers and the drawing unit is regulated.
• the present invention is based on the object of eliminating the disadvantages of this known solution for refining and merging several paper webs.
• the present invention is intended to enable paper webs of very different quality to be refined independently of one another, but register-accurately, and at the same time to carry out very different types of finishing processes correctly and reliably, with the amount of rejects being kept as low as possible.
• the object is achieved by using a method in which all the features of claim 1 are realized, or by using a device with all the features in claims 11 and 12.
• Advantageous or alternative embodiments are described in the dependent claims.
• the essential feature of the solution according to the invention is that in the device for longitudinal register-controlled merging and finishing, in addition to the train unit attached after the common finishing line, there are at least two tension control units in at least one web-specific processing line, of which a first tension control unit before web-specific processing line and a second tension control unit is arranged between the first tension control unit and the merging unit.
• the web tension prevailing in the paper web between the first and the second tension control unit - usually along the web-specific processing line - can thus be set essentially independently of the web tension prevailing between the second tension control unit and the traction unit, in particular on the common finishing line.
• the web tension on the common processing line can be set to a value which substantially corresponds to the web tensions of the other webs. This avoids, for example, the beating of unwanted wrinkles.
• additional tension adjustment units can be added to the first and second tension adjustment units and the tension unit. This means that more than two sections can be set with defined web tensions. This is particularly advantageous when a paper web has to go through several different finishing processes in succession.
• the web tension is essentially constant when viewed in the direction of travel of the paper web.
• the voltage control units are preferably controlled in such a way that that the web tension decreases in the direction of travel of the paper web from section to section in a cascade.
• the web tensions are preferably set to a common, essentially the same value. Behind the pulling unit, particularly in the collecting device, the merged paper webs are essentially free of tension.
• the pulling unit has to pull the most in order to achieve the cascade-like, gradual drop in web tension in the running direction.
• the voltage control units located upstream are controlled so that they each pull less than the subsequent voltage control unit. Alternatively, they can also be controlled in such a way that they have a braking effect, each with a greater braking effect than the subsequent voltage control unit.
• the web tension in each paper web on the common processing line slightly different, but essentially to a value common to all webs.
• the paper webs are to be firmly connected to one another on the common processing line, then it is necessary to set the web tensions very precisely to the same value j.
• the means for building up and adjusting the web tension in particular the first, the second and possible further tension adjusting units and the tension unit, are advantageously constructed in such a way that the web tension remains essentially constant over the entire width of the paper web. This is approximately achieved in that tension control units and the train unit as
• Pull roller pairs and in particular as rubber rollers, are formed.
• the pressure on the paper web running through the pair of rollers is generally distributed more uniformly than in the case of known (hard) drawing rollers, so that the web tension is set uniformly over the width.
• the requirement for the best possible uniformity of web tension across the width of the paper web is essential. in particular to avoid tearing the paper web or the occurrence of undesired folds and thus the loss of finished material as far as possible.
• Pull rollers in particular rubber rollers, can therefore advantageously also be provided on their circumference with a specific profile which is adapted to the shape of the surface of the continuous paper web.
• finishing products applied to the paper webs can be picked up via suitable recesses in the profile when the paper webs pass through the corresponding pairs of drawing rollers, so that in this case the pressure is distributed approximately uniformly over the width of the paper web.
• Cylinder rollers of the pair of draw rollers are usually driven synchronously, so that the same
• Peripheral speed is given.
• the axes of the two cylinder rollers are precisely aligned with one another and are perpendicular to the paper transport direction. This means that the contact pressure exerted by the pair of pulling rollers on the paper webs in between is equal and the paper webs are transported in a straight line without the slightest wrap angle. It is obvious that depending on the material or the flexibility of the wrapping of the drawing rollers or on the smoothness of the surface of the paper web, the peripheral speed of the pairs of drawing rollers must be adapted to the respective thickness of the paper webs transported between them. In special applications, it can also be advantageous to drive the two pull rollers separately and independently of one another.
• the longitudinal register of a paper web can be set in two ways. The first is that the path of the paper web within the web-specific processing line can be set directly using a longitudinal register adjustment unit. Secondly, in that the stretching of the paper webs, which is connected with the elasticity of the paper webs and is dependent on the web tension, is used in order to shift the markings on the different paper webs relative to one another in such a way that they coincide with each other on the common processing line.
• the direct setting of the path has the advantage that the longitudinal register of a paper web can be set directly and independently of the web tension. It must then be ensured that, at the same time as the path of the paper web is changed, its feed on the section located in front of the longitudinal register adjustment unit is adjusted synchronously with the change in the path.
• Digital printing In digital printing, the later distortion of the printed image can already be compensated for during printing, in that the printed image is deliberately applied so distorted in the opposite direction that the later distortion is compensated for as a result of the changing stretch of the paper web.
• Printing is one of the most common types of pre-processing of paper webs to be finished.
• the combination of the technique of digital printing with the technique of strain-based longitudinal register adjustment described here offers a particular potential for simplifying and reducing the cost of finishing processes, because there is no need for pre-processing of the paper webs and cheaper raw paper can be used if all finishing processes required for the finished product can be integrated in one device.
• Tension adjusting units are preferably formed by pairs of pull rollers.
• the arrangement of other such! I tension control units are particularly advantageous if the processing line is particularly long or if several finishing steps have to be carried out in succession on the processing line in order to adapt the web tension on each section for the corresponding processing steps and to keep it safe on each section I. .
• a plurality of pairs of draw rollers set to the same transport speed can also be combined to form a tension control unit i.
• the purpose of this is sufficient
• At least one finishing process prior to the merging of all paper webs, can consist in bringing at least two paper webs together.
• Fig. 1 is a partially schematic side view of a first embodiment of a complete
• Fig. 2 is a longitudinal register setting unit for direct
• Fig. 4 is a top view of the second embodiment of a complete device;
• Fig. 5 is a schematic side view of the first
• Fig. 6 is a schematic side view of a third
• FIG. 1 shows a simplified, partially schematic representation of an embodiment of a device according to the invention, which is not to scale in all parts.
• Four paper webs 1, 2, 3 and 4 are in the direction of view
• the viewer is unrolled from feed units (not shown) and deflected to the right by a right angle in the drawing via deflection units (a deflection unit for third paper web is designated 12c in the drawing).
• the deflection units are designed as so-called turning crosses 59a, 59b, 59c and 59d.
• a turning cross is a deflection unit consisting of at least one cylindrical deflection roller, the deflection roller with its The axis of rotation is arranged parallel to the plane defined by the paper surface and at an angle of 45 ° to the running direction of the incoming paper.
• FIG. 3 A side view of such turning crosses 59a, 59b, 59c, 59d, 59e and 59f is shown in FIG. 3, and a top view in FIG. 4.
• turnstile The exact functioning of a turnstile is not essential to the invention. However, such turning crosses advantageously enable a spatially compact and space-saving construction of the entire device as clearly shown in FIGS. 2 and 3. All paper webs 1 to 6 to be refined are fed from unwinding units 40a to 40f (FIG. 4) which are arranged in parallel next to one another and are also arranged in parallel next to one another and are printed by essentially identical digital printing systems 71a to 71f (FIG. 4) and printed there, and then diverted via turning crosses 59a to 59f in the same direction.
• a first tension adjusting unit 19 follows as the first means for regulating the web tension for each paper web.
• the first tension adjusting unit for paper web 4 is denoted by 19d and framed with a dashed line.
• the tension adjusting device 19d consists of a first deflection roller 81, a variator 82, a pressure roller 83, a tension measuring roller 84 and an optional second deflection roller 85.
• the axes of all the rollers are aligned parallel to one another.
• the variator 82 is arranged in the plane of symmetry that belongs to the first deflecting roller 81 and to the tension measuring roller 84.
• the position of the variator 82 can be changed in the plane of symmetry with respect to the first deflecting roller 81 and the tension measuring roller 84 (ie upwards or downwards in the illustration of FIG. 1) while the wrap angle of the paper web around the variator 82 remains essentially the same.
• the pressure roller 83 forms a pair of rollers with the variator 82; it is arranged with pressure closure on the variator 82.
• the paper web is wrapped around the tension measuring roller 84, so that the web tension can be measured on the basis of the force effect of the tensioned paper web on the tension measuring roller 84 (in FIG. 1, a force pulling the tension measuring roller 84 upward).
• the bearings (not shown) of the axis of the tension measuring roller 84 are expediently mounted in a force transducer (not shown).
• the second deflecting roller 85 deflects the paper web at the outlet of the tension adjusting device 19d into a desired outlet direction. This function of the second deflecting roller 85 is not essential for the functioning of the arrangement shown as a tension adjusting unit.
• the web-specific processing lines 10a to 10d initially include those already described above in FIG essentially identical, first voltage control units 19a to 19d. This is followed by different web-specific finishing lines 13a to 13d, a second one
• Voltage control units 20a to 20d and means for congruent regulation of the longitudinal registers 14a to 14d.
• the paper webs 1 to 4 are then brought together in the merging unit 21 and fed to a common processing section 22.
• Paper web 1 no longer has a web-specific finishing process.
• the paper web 2 is folded in a folding plow 77 along its longitudinal direction.
• the paper web 3 passes through a gluing unit 72 the glue nozzle 78 are attached.
• the common processing section 22 in Figure 1 consists of a folding plow 79, which folds the four merged paper webs together in the longitudinal direction, the web button 24 and the pulling unit 25, which is designed as a pair of two identical, pressed against each other and rotating drive rollers.
• the common processing section 22 is followed by a catch direction 26 for the refined and merged paper webs.
• a format cutter 27 is also shown in FIG. 1 as the first element of the collecting device 26.
• possible embodiments can be seen in an exemplary embodiment further subsequent elements of a collecting device 26, in particular a first rotary format cutter 28, a 90 ° deflection station 29, a second rotary format cutter 30 and a compensating stacking device 31 for the finished products cut to size.
• the second tension adjusting unit 20a to 20d essentially consists of a pair of dissimilar, cylindrical rollers pressed against each other with pressure closure, namely the thicker, stationary second roller 92 and the thinner, against the stationary second roller 92 pressed roller 93.
• the forward speed of the paper web and thus a preferably braking effect defined in relation to the pulling unit 25 can be achieved via the rotational speed of the press roller 93 and thus on the intermediate section of the paper web, and thus Set a defined web tension in the common processing line 22, which is the same for all paper webs.
• a pulling effect and thus also a defined web tension can be built up in relation to the first tension adjusting unit 19, in particular the pressure roller pair formed from the pressure roller 83 and the variator 82.
• the means shown in the example in FIG. 1 for congruent regulation of the longitudinal registers 14 comprise the
• the longitudinal register setting unit 15 is advantageous between the end of the web-specific finishing line 13 and arranged immediately in front of the merging unit 21 and enables a direct adjustment of the path of the paper web on the web-specific finishing line 13.
• the path of the paper web can be set directly, for example, by pressing a deflection roller, which is arranged with its axis perpendicular to the direction of the paper web, substantially perpendicular to the surface of the paper web against the paper web, so that the wrap angle is thereby changed the paper web around the deflection roller changes. If the wrap angle becomes larger, the path of the paper web also increases and its register is set back in the direction of travel compared to the register of other paper webs. : ⁇ ' ⁇
• the longitudinal register setting unit 15 shown in FIG. 1 includes the movable first roller 91 and the fixed second roller 92. By changing the position of the first roller 91 essentially in the azimuthal direction around the second roller 92, the wrap angle of the paper web on the second roller 92 and thus the path of the paper web changed.
• a longitudinal register setting unit As shown in FIG. 1, a longitudinal register setting unit with a
• FIG. 1 shows the combination of the longitudinal register adjusting unit 15 with the second tension adjusting unit 20 to form an arrangement consisting of only three rollers, namely the movable first roller 91, the stationary second roller 92 and the press roller 93.
• the longitudinal register can also be set directly, for example, with a second embodiment shown in FIG. 2 consisting of three rollers.
• a fixed input roller 97 deflects the direction of the paper web 1 entering the arrangement into a specific first direction of travel, designated by the direction of adjustment 102.
• a reversing roller 98 which is displaceably arranged in the adjusting direction 102 deflects the running direction of the paper web from the adjusting direction 102 into the exactly opposite reversing direction 103.
• the likewise stationary output roller 99 deflects the paper web 1 into a freely selectable, wide range 101 of outlet angles.
• the entry angle of the paper web 1 can also be freely selected in a wide range 100. It is important that the wrap angle of the paper web around the deflecting roller 98 is exactly 180 °. This condition can be easily met by a suitable choice of the relative arrangement of the input roller 97 and the output roller 99 with respect to the reversing roller 98.
• the position of the deflection roller 98 can be shifted along the adjustment direction 102.
• the deflecting roller 98 is displaced by a certain distance ⁇ x toward (or away from) the input roller 97 or output roller 99, the path of the paper web is shortened (lengthened) by exactly twice the distance 2 ⁇ x. This makes it particularly easy to calibrate the length register setting.
• FIG. 3 shows a scale, and in particular in the area of the turning crosses 59a to 59f
• Deflection units and in the area of the merging unit 21 a technically detailed side view of a complete device according to the invention for refining and merging six paper webs 1 to 6.
• Die paper webs are donated from feed units (not shown) in the viewing direction of the viewer, printed in digital printing systems (not shown) and introduced into the device shown via the turning crosses 59a to 59f deflected to the right. After passing through the turning crosses, the paper webs already run above or below one another in spatial terms, but have not yet been brought together in the sense of the invention.
• feed units not shown
• digital printing systems not shown
• the first tension control units 19a to 19f which are also identical, starts a web-specific processing section with the following finishing stations: Paper webs 1 and 2 run directly without any further finishing step into the combination of longitudinal register setting unit 15a and 15b and second voltage setting unit 20a and 20b already described above with reference to FIG. 1, before they pass the longitudinal register buttons 16a and 16b into the merging unit 21.
• the paper web 3 first passes through a folding plow 77, the paper web 4 through a gluing unit 72 and the paper web 5 through a punching device 73.
• the paper web 6 passes through a dispensing unit 76, is then coated with glue by the glue nozzle 78 and glued together with the paper web 5 to form the paper web 5 ' , Then the paper webs 3, 4 and 5 'each run separately into a combination of longitudinal register adjustment unit 15c to 15e and second tension adjustment unit 20c to 20e. The paper webs 3 and 4 then run past the longitudinal register buttons l ⁇ c and 16d before they too, together with paper web 5, reach the merging unit 21 and are merged.
• the long register buttons 16a to l ⁇ d detect the paper webs 1 to 4 in which are running past Markings applied at regular intervals and each give a signal to the control unit (not shown) of the device.
• the control unit uses the time sequence of the arrival of the signals to check whether the longitudinal registers of the individual paper webs 1 to 4 are congruent with one another and recognizes a possible deviation for each paper web 1 to 4. If a deviation is found for one of the paper webs 1 to 4, a control signal is sent to the corresponding longitudinal register control unit 15a to 15d for each paper web running with a different register via an assigned longitudinal register control device (not shown) in order to correct the deviation.
• the web button 24 attached directly in front of the pulling unit 25 detects the markings which are made on the paper web 5 'lying on top of the other paper webs in the area of the merging unit 21 and the subsequent common processing section and outputs corresponding signals to the control unit.
• the control unit recognizes the common running speed of the merged paper web and can set the absolute running speed via a control device which controls the pulling unit.
• a possible deviation of the longitudinal register of the paper web 5 'from the longitudinal registers of the paper webs 1 to 4 can be determined from a comparison of the temporal sequence of the arrival of the signals from the web button 24 with the sequence of the signals generated by the longitudinal register buttons l ⁇ a to l ⁇ d and by actuation of the Paper register 5 'associated longitudinal register adjustment unit 15e are corrected.
• the merging unit 21 advantageously has at least one for each of the incoming paper webs 1 to 5 'on a deflection roller 94a to 94e and a guide roller 95a to 95e.
• the axes of rotation of all deflecting rollers 94a to 94e are arranged in one plane, as a result of which the paper webs 1 to 5 'abut one another after they have passed around the deflecting rollers 94a to 94e.
• Each of the deflection rollers is mounted with a force transducer, with which the web tension of the paper web in question is measured.
• the merged paper webs on the common processing line pass through a final plow 79, the traction unit 25, a format cutter and further units (not shown in FIG. 3, but shown in plan view in FIG. 4), in particular a first rotary cutter 28, through 90 ° - Deflection station 29 and a second format cutter 30.
• the individual finished products of the finishing process cut from the combined, endless paper web to format are finally stacked one above the other in a compensating stacking device 31.
• An overall view of the arrangement and attachment of the functional elements of the device shows a modular structure of the device.
• FIG. 4 shows a top view of the same device, which is shown in FIG. 3 in a side view. This view again illustrates the modular structure of the entire device.
• the parallel arrangement of the six feed units for the six paper webs 1 to 6 can be clearly seen.
• each of the feed units 10a to 10f comprises an unwinding unit 40a to 40f, which includes in particular the unwinding devices 41a to 41f with storage drums 42a to 42f and the web guiding device 49a to 49f.
• each paper web 1 to 6 runs through a digital printing system 71a to 71f.
• FIG. 5 shows a detailed side view of an individual feed unit, as is provided for each paper web in the device shown in FIGS. 3 and 4.
• the unwinding device 41 with the supply drum 42 and the web guiding device 49, as well as the digital printing system 71 in the further course of the paper web, can clearly be seen in the unwinding unit 40.

Landscapes

• Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
• Replacement Of Web Rolls (AREA)
• Laminated Bodies (AREA)
• Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Applications Claiming Priority (3)

Publications (2)

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• 2001
  • 2001-05-17 WO PCT/EP2001/005649 patent/WO2001089971A1/fr not_active Ceased
  • 2001-05-17 EP EP01940494A patent/EP1282575B1/fr not_active Expired - Lifetime
  • 2001-05-17 AU AU2001274048A patent/AU2001274048A1/en not_active Abandoned
  • 2001-05-17 HK HK03101502.6A patent/HK1049650A1/zh unknown
  • 2001-05-17 PL PL01357824A patent/PL357824A1/xx not_active IP Right Cessation
  • 2001-05-17 AT AT01940494T patent/ATE334924T1/de not_active IP Right Cessation
  • 2001-05-17 US US10/276,560 patent/US20040026056A1/en not_active Abandoned
  • 2001-05-17 ES ES01940494T patent/ES2269417T3/es not_active Expired - Lifetime
  • 2001-05-17 JP JP2001586168A patent/JP2003534174A/ja not_active Withdrawn
  • 2001-05-17 DE DE50110622T patent/DE50110622D1/de not_active Expired - Lifetime
  • 2001-05-17 CA CA002409270A patent/CA2409270A1/fr not_active Abandoned
  • 2001-05-17 RU RU2002134182/12A patent/RU2265570C2/ru not_active IP Right Cessation

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