EP1386869B1 - Web spreading device - Google Patents
Web spreading device Download PDFInfo
- Publication number
- EP1386869B1 EP1386869B1 EP03405562A EP03405562A EP1386869B1 EP 1386869 B1 EP1386869 B1 EP 1386869B1 EP 03405562 A EP03405562 A EP 03405562A EP 03405562 A EP03405562 A EP 03405562A EP 1386869 B1 EP1386869 B1 EP 1386869B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- hand
- deflecting means
- spreading device
- strand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003892 spreading Methods 0.000 title claims abstract description 57
- 238000005520 cutting process Methods 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
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
- B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
-
- 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
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/032—Controlling transverse register of web
- B65H23/035—Controlling transverse register of web by guide bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
- B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/30—Orientation, displacement, position of the handled material
- B65H2301/35—Spacing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/41—Winding, unwinding
- B65H2301/414—Winding
- B65H2301/4148—Winding slitting
Definitions
- the invention relates to a web spreading device for or in a web-processing machine in which a material web to be processed, for example a plastic film or metal foil or in particular a paper web, is endlessly conveyed and processed.
- the processing machine may in particular be a rotary printing machine, preferably for the printing of large newspaper editions.
- the DE 100 23 169 A1 describes a web spreading device with two arrow-shaped turning bars, which are arranged in the web conveying direction behind a longitudinal cutting device behind the other and are mounted relative to each other movable in a machine frame.
- By adjusting the two arrow-shaped turning bars relative to each other two web strands of a longitudinally cut web can be offset in parallel and thereby spread apart.
- the spreading device is compact.
- the two web strands are offset symmetrically in relation to the longitudinal section in parallel, ie each by the same offset.
- the invention relates to a web spreading device which is arranged in a web processing machine or provided for the arrangement in a web processing machine. It serves to create a distance between parallel web strands transversely to a web conveying direction or to change an optionally existing distance, preferably to increase it.
- the web spreading device is inserted in the machine or preferably in the machine before acting on the web Processing unit arranged, in the case of several processing units, for example, before the first processing unit seen in the web conveying direction to adjust the position of the web strands with respect to the processing unit or the plurality of processing units transversely to the web conveying direction.
- the longitudinal direction of the uncut web and the longitudinal direction of the parallel offset web strands are generally referred to below in the following.
- the web spreading device comprises a frame, a cutting device for slitting a web into a left web strand, and at least one further, right web strand, at least two left web strand redirecting devices, and at least two right web strand web redirecting devices.
- the deflecting each have obliquely to the web conveying direction.
- the left-hand deflectors are looped around by the left-hand web strand and the right-hand deflectors are looped around by the right web strand, i.
- Each of the deflection devices forms a deflection axis for that track, to which it is assigned.
- Each of the deflection devices can be formed in particular in the manner of a turning bar. It can also form a rotatably mounted deflection roller one of the deflection, which is advantageous for the web guide, but increases the complexity of Brusp Rudvorraum.
- the at least two left-hand deflection devices are arranged one behind the other in the web conveying direction. They are therefore referred to as up-stream, first left diverter and down-link, second left diverter. Preferably, they are arranged directly behind one another in the strand path of the left-hand web strand, ie there is no further deflection device between them which the left-hand web strand wraps around.
- the at least two right-hand deflection devices which are referred to below as the first right deflection device and the second right deflection device, what has been said about the left-hand deflection devices applies equally to the right-hand web strand.
- first left-hand deflecting device and the first right-hand deflecting device point toward one another in a plan view of the web and the deflecting axes formed by them have an angle of less than 180 ° in plan view lock in.
- the second left-hand deflecting device and the second right-hand deflecting device also point towards one another in plan view, wherein their deflecting axes also include an angle of less than 180 ° in plan view.
- the deflecting devices or a part of the deflecting devices are pivotably mounted in the frame in order to pivot the deflecting devices or a part of the deflecting devices for the purpose of adjusting the angle in the web plane or web path level, however, it is also conceivable that the deflecting devices facing each other are aligned in a swiveling position, However, then there is no spread through the respective deflection.
- the deflection devices are shaped and arranged relative to one another such that the left-hand web strand is spread parallel to one another by looping around the left-hand deflection devices and the right-hand web strand is looped around by the right-hand deflection devices.
- a Aufgluzuspreizen, ie a parallel offset to each other is basically conceivable alternative. With appropriate pivoting of the deflection, could also be either spread or spread.
- the web strands are each offset parallel to their position before the looping of the associated first deflecting device. The distance that the splayed web strands have perpendicular to the web conveying direction from each other is referred to below as Sp Grande.
- At least one of the left deflecting relative to the other of the left deflecting means and at least one of the right deflecting relative to the other of the right deflectors in the frame is each movably mounted by an adjustment.
- These at least two adjustment paths are preferably parallel to one another and furthermore preferably also the same length.
- the parallelism of the offset can be ensured most simply by the fact that the left-hand deflecting devices have the same cross-sectional shape and size among each other via their lengths acting on the left-hand web strand and the same cross-sectional shape and also the right-hand deflecting devices have the same cross-sectional shape and size over their lengths acting on the right-hand web strand; the deflection axes of the left-hand deflection devices in the adjustment positions and also the deflection axes of the right-hand deflection devices in the adjustment positions are parallel to one another in pairs.
- the first deflection means or more preferably the second deflection means are movable relative to each other.
- both the first deflection devices relative to one another and the second deflection devices can be movable relative to one another.
- the mounting of the movable deflection devices is preferably such that the movable deflection devices can each be moved independently of each other of the deflection devices along their displacement path. Due to the adjustability according to the invention, the path lengths traveled by the web strands between the associated deflectors can be varied with each other, i.
- the path length traveled by the left-hand web strand between the first left and second left-hand deflecting means may optionally be greater or smaller than the path length traveled by the right-hand web strand between the first right and the second right-hand deflecting means.
- the deflection can also be adjusted in positions in which the path lengths of the two web strands between the respective associated deflection are equal.
- the parallel offset of the two web strands can therefore be chosen differently large. It can also pass the Brusp Schwarzvorraum without parallel offset one of the web strands while the other is offset in parallel.
- the invention opens up the possibility of setting the parallel offset of one of the web strands independently of the other of the web strands.
- the web spreading device can therefore form the actuator of a web edge control for at least one of the web strands and preferably for both web strands.
- each of the deflection devices can be mounted individually movable in the frame. It is conceivable, for example, that the first left-hand deflecting device and the second right-hand deflecting device are movably mounted and the other two deflecting devices are firmly clamped in the frame.
- a possible adjustability for the purpose of compensating for manufacturing tolerances is once again disregarded as far as the term of the fixed clamping is concerned.
- the invention rather means that the respective deflection device is still movable while maintaining such an adjustment if necessary.
- the mobility is also preferably such that the respective deflection device can be moved after the entry of a new track in the desired adjustment position. Particularly preferably, it can also be moved in the current production along its displacement.
- the spreading device comprises a control device which has a drive device for driving the movable deflection devices and can advantageously be further developed into a control and regulating device.
- the invention also relates to a web spreading device in which the movable deflection devices are manually moved to the desired adjustment positions and fixed in these adjustment positions.
- the flexibility can be further increased if the deflecting devices and the longitudinal cutting device are movable in a linear manner transversely to the web conveying direction.
- the deflecting means and the longitudinal cutting means are mounted together in the frame, and the frame as a whole is movable straight relative to the processing unit or the plurality of processing units transversely to the web conveying direction.
- FIG. 1 shows components of a web-fed rotary printing press comprising a web spreading device according to the invention. Shown is the path of a web to be printed B of a reel changer 1 via a web spreading device to a printing unit 9, which is formed as a printing tower.
- the spreading device includes a longitudinal cutting device 4, which serves to cut the web B longitudinally into two web strands Bl and Br, and deflection devices 5 and 6, which serve to spread the formed web strands Bl and Br parallel to each other.
- the splayed web strands Bl and Br are conveyed in the web conveying direction F to a printing tower 9 and printed on both sides depending on multi-color.
- the printing tower 9 From the printing tower 9, two cylinder bridges, each formed from two printing on the web strands Bl and Br blanket cylinders and each associated with a plate cylinder, are shown.
- the printing tower 9 can also comprise further such cylinder bridges in order to print the web strands B1 and Br four-color on both sides, for example.
- the web strands B1 and Br are either separately or ever with at least one other web strand on a former 20 or together on a common former 20 and separated in the formers or folded along in the former together.
- a folding apparatus or a plurality of folders for cross-cutting and transverse folding can be arranged behind the former 20 or the plurality of folders.
- the uncut web B entering the spreading device from the roll changer 1 is conveyed via an inlet guide 3 to the longitudinal cutting device 4.
- the longitudinal cutting device 4 is essentially formed by two cutting rollers which can be placed on and off one another and between which the web B is conveyed. By the longitudinal section of the left Bahnstrang Bl and the right rail track Br are formed.
- the web strands Bl and Br are guided via a first deflection device 5, an immediately following second deflection device 6 and a discharge guide device 7. Subsequently, they are conveyed to the printing tower 9 via further guide devices, of which one next to the outlet guide 7 next adjacent guide 8 is shown.
- the longitudinal cutting device 4 and the first deflection device 5 are mounted in a fixed positional relationship to each other in a frame 2.
- the inlet guide 3 is a guide roller which is rotatably mounted in the frame 2.
- the first deflection device 5 is not rotatable.
- the second deflection device 6 is movably supported linearly guided together with the outlet guide 7 in the frame 2.
- a linear guide track 11 of the bearing is fixedly connected to the frame 2.
- the second deflection device 6 and the outlet guide device 7 are continuously movable back and forth along the linear guide 11 between two extreme positions. One of the two extreme positions is in FIG. 1 in solid line and the other shown in dashed line.
- a control device 15 controls a drive device 12 based on instructions that can be input to the control device 15 or to a higher-level machine control such that the second deflection device 6 and the outlet guide device 7 assume the desired adjustment position on the adjustment path.
- FIG. 2 shows the web spreading device in a first state in a plan view of the web plane.
- the second deflection device 6 and the outlet guide device 7 are each divided in the middle into two symmetrical halves.
- the two halves are independently linearly guided on a frame-fixed linear guide 11 (FIG. FIG. 1 ) movably mounted.
- the adjustment paths and also the extreme positions of the two halves are the same.
- the movements of the two Halves are controlled by the controller 15 via the drive means 12 and optionally also regulated.
- the two halves can be moved in particular together or individually or in opposite directions along their adjustment paths and fixed in any position between the extreme positions.
- a second left diverter 6l and a second right diverter 6r and a left outlet guide 7l and a right outlet guide 7r are formed.
- the second left diverter 6l and the left exit diverter 7l are associated with the left web strand Bl, i. they only come in contact with the left-hand track Bl.
- the second right hand deflector 6r and right hand runner 7r are associated with the right hand web strand Br, i. they only come in contact with the right-hand track Br. Accordingly, there is also an assignment in the first deflection device 5.
- the first deflection device 5 is, however, fixed in the frame at the two opposite frame sides 2l and 2r.
- the first deflection device 5 functionally breaks down into a first left-hand deflection device 5l and a first right-hand deflection device 5r.
- the deflection devices 5l, 5r, 6l and 6r each have the same cross section. In the exemplary embodiment, they are each formed as circular rods.
- the first deflection devices 5l and 5r and in particular the deflection axes formed by them form in the plan view of the plane of the incoming web B an arrow shape, the tip of which faces the web conveying direction F.
- the first deflection devices 5l and 5r are firmly connected to one another in the middle in the area of the "arrowhead". The tip itself is worked around to avoid the risk of scoring the web B.
- the longitudinal cutting device 4 and the tip formed by the first deflecting means 5l and 5r lie exactly on the machine axis S.
- the arrangement of the parts of the spreading device associated with the left web strand Bl is symmetrical with the arrangement of the parts associated with the right web strand Br are. In that regard, the machine axis S also simultaneously forms an axis of symmetry of the spreading device.
- the right-hand deflection devices 5r and 6r form mutually parallel deflection axes for the right-hand web strand Br.
- the adjustment paths of the second deflection devices 6l and 6r run in such a way that the parallelism of the deflection axes in each Adjustment of the second deflection 6l and 6r is maintained.
- the outlet guide means 7l and 7r are arranged relative to the second deflecting means 6l and 6r so that the web strand level defined by the second left deflecting means 6l and the left outlet guide 7l in the case of wrapping and that of the second right deflecting means 6r and Right outlet outlet guide 7r in the case of wrapping defined Brustranbinee is parallel to the orbital plane, which is predetermined by the inlet guide 3 and the two first deflection 5l and 5r in the case of their wrap.
- the outlet guide devices 7l and 7r form deflection axes pointing perpendicular to the web conveying direction F.
- the second left-hand deflecting device 6l and the left-hand outlet guide 7l are mounted together on a left-hand carriage 10l.
- the bearing on the carriage 10l is such that the deflection axes of the second left deflection 6l and the left outlet guide 7l are adjustable relative to the carriage 10l at most in the context of tolerance-compensating adjustments.
- the two carriages 10l and 10r are each movable along their own frame guide 11 on their respective frame side 2l and 2r, the left linear guide 11 being parallel to the right linear guide 11 and being arranged at the same height with respect to the web conveying direction F.
- the two outlet guide means 7l and 7r may be rotatably mounted on the respective slide 10l and 10r. Basically, the same applies to the second deflection 6l and 6r, but the simpler construction is preferred because of the formation each as a non-rotatable rod.
- the second left deflecting 6l and the second right deflecting 6r each an adjustment position in which they a single to the incoming web B plane parallel plane for the Web strands Bl and Br define.
- the second deflecting means 6l and 6r also form an arrow shape with each other, but with a narrow gap between their free ends, which exactly overlap one another in these positions.
- the deflection axes formed by the second deflection devices 6l and 6r intersect accordingly.
- the deflection axes formed by the outlet guide devices 7l and 7r are aligned in these adjustment positions.
- the web B enters symmetrically to the machine axis S in the spreading device. Because of this track symmetry and the positioning of the second deflection devices 6l and 6r in a common plane, the two web strands Bl and Br are each spread apart to one side away from the machine axis S by the same offset parallel to each other. This results in the Sp Drruc X, which designates the transversely to the web conveying direction F measured clear distance between the web strands Bl and Br. "M" is the distance measured in the web plane between a left boundary line and a right boundary line, up to which the web strands Bl and Br can be displaced parallel to the left outside or right outside with sufficient web width by means of the spreading device.
- the widths of the web strands Bl and Br are indicated by A, and the widths on both sides of the longitudinal folds Ll and Lr are indicated by A '.
- the web B runs asymmetrically to the machine axis S in the spreading device.
- the symmetry longitudinal axis of the web B is denoted by S B. It is laterally offset to the machine axis S.
- the web B is cut asymmetrically into a left web strand Bl and a right web strand Br by means of the cutting device 4 in accordance with the offset of the axes S and S B.
- the spreading device is in a state in which the right slide 10r with the second right turning device 6r and the right run guide 7r does not protrude into the path of the right web strand Br, and accordingly, no wrap-around contact with the right web strand Br Has.
- the right web strand Br is therefore conveyed through without lateral displacement by the spreading device.
- the adjustment position of the second right deflection 6r and the right outlet guide 7r corresponds to the in FIG. 1 dashed line position shown.
- the second left-hand deflecting device 6l and the left-hand outlet guide device 7l are moved into the path of the left-hand web strand B1, for example into the in FIG. 1 shown in a solid line other extreme position.
- the reel changer 1 is in the embodiment of FIG.
- the second left-hand deflecting device 6l has been moved together with the left-hand outlet guide 7l relative to the first left-hand deflecting device 5l into such an adjustment position that it experiences a parallel displacement corresponding to the spreading dimension X, which is so great that the left-hand web strand Bl is centered is conveyed to the associated Lssensfalztrichter 20.
- the web B has a different width Z than the web B of FIG. 2 has shown first example.
- the distance X of The outer edge of the left web strand Bl from the left boundary line corresponds to the spread dimension X.
- the widths of the web strands Bl and Br are indicated by B and C.
- Both sides of the fold lines Ll and Lr have the web strands Bl and Br because of the central conveying on the Lticiansfalztrichter 20 and 21 each have the same widths, which are given for the left web strand Bl with B 'and for the right web strand Br with C'.
- the web B is supported by the paster 1 symmetrical to the machine axis S, ie, the machine axis S coincides with the central longitudinal axis S B of the web B. Since the longitudinal section is performed on the machine axis S, the two resulting web strands Bl and Br each have the same width A, wherein it is assumed that the width Z of the web is the same as in the embodiment of FIG. 2 is.
- the web spreading device is in the same state as in the second embodiment. The right-hand web strand Br passes the web spreading device accordingly unaffected. Unlike in the embodiment of FIG.
- the right web strand Br to the rightmost edge on a distance Y so that the right web strand Br as in the first embodiment of the FIG. 2 shown only longitudinally would be folded along, if it would spread the web spreading device to the parallel offset Y / 2 with respect to the machine axis S to the right outside parallel.
- the right-hand web strand Br is consequently conveyed eccentrically onto the longitudinal folding hopper 21 and, accordingly, folded longitudinally off-center.
- the printed image printed on it is correspondingly asymmetrical.
- the part width of the right web strand Br to the one side of the longitudinal fold line Lr is denoted by A "and the width different therefrom to the other side of the longitudinal fold line Lr is denoted by A"'.
- the second left-hand deflecting device 6l assumes such an adjustment position relative to the first left-hand deflecting device 5l that the left-hand web strand Bl is conveyed centrally onto the longitudinal-folding hopper 20.
- the parallel offset X of the left web strand Bl corresponds to the Sp Dahlmann.
- the partial widths on both sides of the longitudinal fold line L1 are the same in the left-hand web strand B1 and are accordingly denoted by A '.
- the new web Upon entry of a free web start of a new web, the new web is passed from the reel changer 1 via the inlet guide 3 and between the cut-off cutting rollers of the cutter 4. Subsequently, the beginning of the web is straight, that is performed without looping around the deflection 5l to 6r and outlet guide 7l and 7r up to the other outlet guide 8 and looping around the outlet guide 8 and optionally via even more guide devices through the pressure nip or more Pressure column of the printing tower 9 fed to the formers 20 and 21.
- the former 20 and 21 may, as already mentioned, be a single former, to which both web strands Bl and Br are brought together.
- the second baffles 6l and 6r and the outlet baffles 7l and 7r take their in FIG.
- the deflection devices 5l to 6r have blowing air holes on their mantle surfaces, through which the wrap-around web strands Bl and Br can be exposed to blown air, as known from turning bars. As soon as one of the deflection devices 5l to 6r is moved against the relevant web strand Bl or Br, the blowing air is switched on.
- the switching on of the blowing air is of course automated, for example as a function of the adjustment position of the second deflection devices 6l and 6r and preferably under the control of the control device 15.
- the predetermined by the shape of the two linear guides 11 adjustment paths of the second deflection 6l and 6r and outlet guide 7l and 7r extend obliquely linear to the orbital plane each within a perpendicular to the web plane, pointing longitudinally to the web Verstellwecreatee.
- the two adjustment paths are parallel to each other, as already mentioned.
- the orientation of the adjustment paths is further such that the second deflection means 6l and 6r and outlet guide means 7l and 7r are moved to increase the spread dimension X against the web conveying direction F.
- the web strands Bl and Br run between the first deflecting means 5l and 5r and the second deflecting means 6l and 6r at a right angle to the web plane defined by the inlet guide 3 and the first deflecting means 5l and 5r.
- the web path level defined by the second deflection devices 6l and 6r and the outlet guide devices 7l and 7r is parallel to this web plane.
- the web plane between the inlet guide 3 and the first deflection 5l and 5r on the one hand and the Brustranselle between the second deflection 6l and 6r and the outlet guide means 7l and 7r on the other hand are parallel in all adjustment positions.
Landscapes
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Treatment Of Fiber Materials (AREA)
- Paper (AREA)
- Rotary Presses (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Prostheses (AREA)
Abstract
Description
Die Erfindung betrifft eine Bahnspreizvorrichtung für eine oder in einer Bahnbearbeitungsmaschine, in der eine zu bearbeitende Materialbahn, beispielsweise eine Kunststoffolie oder Metallfolie oder insbesondere eine Papierbahn, endlos gefördert und dabei bearbeitet wird. Die Bearbeitungsmaschine kann insbesondere eine Rotationsdruckmaschine sein, vorzugsweise für den Druck von großen Zeitungsauflagen.The invention relates to a web spreading device for or in a web-processing machine in which a material web to be processed, for example a plastic film or metal foil or in particular a paper web, is endlessly conveyed and processed. The processing machine may in particular be a rotary printing machine, preferably for the printing of large newspaper editions.
Die
Es ist eine Aufgabe der Erfindung, die Flexibilität einer Bahnspreizvorrichtung hinsichtlich der möglichen Bahnführungen zu erhöhen.It is an object of the invention to increase the flexibility of a web spreading device with regard to the possible web guides.
Die Erfindung betrifft eine Bahnspreizvorrichtung, die in einer Bahnbearbeitungsmaschine angeordnet oder für die Anordnung in einer Bahnbearbeitungsmaschine vorgesehen ist. Sie dient dazu, quer zu einer Bahnförderrichtung einen Abstand zwischen parallelen Bahnsträngen zu schaffen oder einen gegebenenfalls bereits vorhandenen Abstand zu verändern, vorzugsweise zu vergrößern. Die Bahnspreizvorrichtung wird in die Maschine oder ist in der Maschine vorzugsweise vor einer auf die Bahn wirkenden Bearbeitungseinheit angeordnet, im Falle mehrerer Bearbeitungseinheiten beispielsweise vor der in Bahnförderrichtung gesehen ersten Bearbeitungseinheit, um die Position der Bahnstränge in Bezug auf die Bearbeitungseinheit oder die mehreren Bearbeitungseinheiten quer zur Bahnförderrichtung einzustellen. Als Bahnförderrichtung wird im folgenden generell die Längsrichtung der ungeschnittenen Bahn und die Längsrichtung der parallel versetzten Bahnstränge gleichermaßen bezeichnet.The invention relates to a web spreading device which is arranged in a web processing machine or provided for the arrangement in a web processing machine. It serves to create a distance between parallel web strands transversely to a web conveying direction or to change an optionally existing distance, preferably to increase it. The web spreading device is inserted in the machine or preferably in the machine before acting on the web Processing unit arranged, in the case of several processing units, for example, before the first processing unit seen in the web conveying direction to adjust the position of the web strands with respect to the processing unit or the plurality of processing units transversely to the web conveying direction. As the web conveying direction, the longitudinal direction of the uncut web and the longitudinal direction of the parallel offset web strands are generally referred to below in the following.
Die Bahnspreizvorrichtung umfasst ein Gestell, eine Schneideinrichtung zum Längsschneiden einer Bahn in einen linken Bahnstrang und wenigstens einen weiteren, rechten Bahnstrang, wenigstens zwei linke Umlenkeinrichtungen für den linken Bahnstrang und wenigstens zwei rechte Umlenkeinrichtungen für den rechten Bahnstrang. Die Umlenkeinrichtungen weisen je schräg zu der Bahnförderrichtung. In der Produktion, beispielsweise einer Druckproduktion, werden die linken Umlenkeinrichtungen von dem linken Bahnstrang und die rechten Umlenkeinrichtungen von dem rechten Bahnstrang umschlungen, d.h. jede der Umlenkeinrichtungen bildet eine Umlenkachse für denjenigen Bahnstrang, dem sie zugeordnet ist. Jede der Umlenkeinrichtungen kann insbesondere in der Art einer Wendestange gebildet sein. Es kann auch je eine drehgelagerte Umlenkwalze eine der Umlenkeinrichtungen bilden, was vorteilhaft für die Bahnführung ist, aber die Komplexität der Bahnspreizvorrichtung erhöht.The web spreading device comprises a frame, a cutting device for slitting a web into a left web strand, and at least one further, right web strand, at least two left web strand redirecting devices, and at least two right web strand web redirecting devices. The deflecting each have obliquely to the web conveying direction. In the production, for example a print production, the left-hand deflectors are looped around by the left-hand web strand and the right-hand deflectors are looped around by the right web strand, i. Each of the deflection devices forms a deflection axis for that track, to which it is assigned. Each of the deflection devices can be formed in particular in the manner of a turning bar. It can also form a rotatably mounted deflection roller one of the deflection, which is advantageous for the web guide, but increases the complexity of Bahnspreizvorrichtung.
Die wenigstens zwei linken Umlenkeinrichtungen sind in Bahnförderrichtung hintereinander, angeordnet. Sie werden im folgenden daher als bahnaufwärtige, erste linke Umlenkeinrichtung und bahnabwärtige, zweite linke Umlenkeinrichtung bezeichnet. Vorzugsweise sind sie im Strangweg des linken Bahnstrangs unmittelbar hintereinander angeordnet, d.h. zwischen ihnen befindet sich keine weitere Umlenkeinrichtung, die der linke Bahnstrang umschlingt. Für die wenigstens zwei rechten Umlenkeinrichtungen, die im folgenden als erste rechte Umlenkeinrichtung und zweite rechte Umlenkeinrichtung bezeichnet werden, gilt das zu den linken Umlenkeinrichtungen Gesagte in gleicher Weise bezüglich des rechten Bahnstrangs. Zu der Anordnung der Umlenkeinrichtungen ist noch zu bemerken, dass die erste linke Umlenkeinrichtung und die erste rechte Umlenkeinrichtung in einer Draufsicht auf die Bahn aufeinander zu weisen und die von ihnen gebildeten Umlenkachsen in der Draufsicht einen Winkel von weniger als 180° einschließen. Auch die zweite linke Umlenkeinrichtung und die zweite rechte Umlenkeinrichtung weisen in der Draufsicht aufeinander zu, wobei auch deren Umlenkachsen in der Draufsicht einen Winkel von weniger als 180° einschließen. Falls die Umlenkeinrichtungen oder ein Teil der Umlenkeinrichtungen im Gestell schwenkbar gelagert sind, um die Umlenkeinrichtungen oder einen Teil der Umlenkeinrichtungen zwecks Winkelverstellung in der Bahnebene oder Bahnstrangebene zu verschwenken, ist allerdings auch der Fall denkbar, dass die aufeinander zu weisenden Umlenkeinrichtungen in einer Schwenkposition fluchten, allerdings findet dann keine Spreizung durch die betreffenden Umlenkeinrichtungen statt.The at least two left-hand deflection devices are arranged one behind the other in the web conveying direction. They are therefore referred to as up-stream, first left diverter and down-link, second left diverter. Preferably, they are arranged directly behind one another in the strand path of the left-hand web strand, ie there is no further deflection device between them which the left-hand web strand wraps around. For the at least two right-hand deflection devices, which are referred to below as the first right deflection device and the second right deflection device, what has been said about the left-hand deflection devices applies equally to the right-hand web strand. It should also be noted with regard to the arrangement of the deflecting devices that the first left-hand deflecting device and the first right-hand deflecting device point toward one another in a plan view of the web and the deflecting axes formed by them have an angle of less than 180 ° in plan view lock in. The second left-hand deflecting device and the second right-hand deflecting device also point towards one another in plan view, wherein their deflecting axes also include an angle of less than 180 ° in plan view. If the deflecting devices or a part of the deflecting devices are pivotably mounted in the frame in order to pivot the deflecting devices or a part of the deflecting devices for the purpose of adjusting the angle in the web plane or web path level, however, it is also conceivable that the deflecting devices facing each other are aligned in a swiveling position, However, then there is no spread through the respective deflection.
Die Umlenkeinrichtungen sind so geformt und relativ zueinander angeordnet, dass der linke Bahnstrang durch Umschlingung der linken Umlenkeinrichtungen und der rechte Bahnstrang durch Umschlingung der rechten Umlenkeinrichtungen parallel voneinander abgespreizt werden. Ein Aufeinanderzuspreizen, d.h. ein Parallelversatz aufeinander zu, ist grundsätzlich alternativ denkbar. Bei entsprechender Schwenkbarkeit der Umlenkeinrichtungen, könnte auch wahlweise ab- oder zugespreizt werden. Die Bahnstränge werden je zu ihrer Position vor der Umschlingung der zugeordneten ersten Umlenkeinrichtung parallel versetzt. Der Abstand, den die abgespreizten Bahnstränge senkrecht zu der Bahnförderrichtung voneinander aufweisen, wird im folgenden als Spreizmaß bezeichnet. Um das Spreizmaß verstellen zu können, ist wenigstens eine der linken Umlenkeinrichtungen relativ zu der anderen der linken Umlenkeinrichtungen und wenigstens eine der rechten Umlenkeinrichtungen relativ zu der anderen der rechten Umlenkeinrichtungen in dem Gestell je um einen Verstellweg bewegbar gelagert. Diese wenigstens zwei Verstellwege sind vorzugsweise parallel zueinander und ferner vorzugsweise auch gleich lang. Die Parallelität des Versatzes kann am einfachsten dadurch gewährleistet werden, dass die linken Umlenkeinrichtungen über ihre auf den linken Bahnstrang wirkenden Längen untereinander die gleiche Querschnittsform und auch die rechten Umlenkeinrichtungen über ihre auf den rechten Bahnstrang wirkenden Längen untereinander die gleiche Querschnittsform und -größe haben und ferner die Umlenkachsen der linken Umlenkeinrichtungen in den Verstellpositionen und auch die Umlenkachsen der rechten Umlenkeinrichtungen in den Verstellpositionen paarweise zueinander parallel sind.The deflection devices are shaped and arranged relative to one another such that the left-hand web strand is spread parallel to one another by looping around the left-hand deflection devices and the right-hand web strand is looped around by the right-hand deflection devices. A Aufeinanderzuspreizen, ie a parallel offset to each other, is basically conceivable alternative. With appropriate pivoting of the deflection, could also be either spread or spread. The web strands are each offset parallel to their position before the looping of the associated first deflecting device. The distance that the splayed web strands have perpendicular to the web conveying direction from each other is referred to below as Spreizmaß. In order to adjust the Spreizmaß, at least one of the left deflecting relative to the other of the left deflecting means and at least one of the right deflecting relative to the other of the right deflectors in the frame is each movably mounted by an adjustment. These at least two adjustment paths are preferably parallel to one another and furthermore preferably also the same length. The parallelism of the offset can be ensured most simply by the fact that the left-hand deflecting devices have the same cross-sectional shape and size among each other via their lengths acting on the left-hand web strand and the same cross-sectional shape and also the right-hand deflecting devices have the same cross-sectional shape and size over their lengths acting on the right-hand web strand; the deflection axes of the left-hand deflection devices in the adjustment positions and also the deflection axes of the right-hand deflection devices in the adjustment positions are parallel to one another in pairs.
Nach der Erfindung sind die ersten Umlenkeinrichtungen oder bevorzugter die zweiten Umlenkeinrichtungen relativ zueinander bewegbar. Grundsätzlich können auch sowohl die ersten Umlenkeinrichtungen relativ zueinander als auch die zweiten Umlenkeinrichtungen relativ zueinander bewegbar sein. Die Lagerung der bewegbaren Umlenkeinrichtungen ist vorzugsweise so, dass die bewegbaren Umlenkeinrichtungen je unabhängig von jeder anderen der Umlenkeinrichtungen entlang ihres Verstellweges bewegt werden können. Aufgrund der erfindungsgemäßen Verstellbarkeit können die Weglängen, welche die Bahnstränge zwischen den zugeordneten Umlenkeinrichtungen zurücklegen, zueinander variiert werden, d.h. es kann die Weglänge, die der linke Bahnstrang zwischen der ersten linken und der zweiten linken Umlenkeinrichtung zurücklegt, wahlweise größer oder kleiner als die Weglänge sein, die der rechte Bahnstrang zwischen der ersten rechten und der zweiten rechten Umlenkeinrichtung zurücklegt. Selbstverständlich können die Umlenkeinrichtungen auch in Positionen verstellt werden, in denen die Weglängen der beiden Bahnstränge zwischen den jeweils zugeordneten Umlenkeinrichtungen gleich sind.According to the invention, the first deflection means or more preferably the second deflection means are movable relative to each other. In principle, both the first deflection devices relative to one another and the second deflection devices can be movable relative to one another. The mounting of the movable deflection devices is preferably such that the movable deflection devices can each be moved independently of each other of the deflection devices along their displacement path. Due to the adjustability according to the invention, the path lengths traveled by the web strands between the associated deflectors can be varied with each other, i. the path length traveled by the left-hand web strand between the first left and second left-hand deflecting means may optionally be greater or smaller than the path length traveled by the right-hand web strand between the first right and the second right-hand deflecting means. Of course, the deflection can also be adjusted in positions in which the path lengths of the two web strands between the respective associated deflection are equal.
Der Parallelversatz der beiden Bahnstränge kann daher unterschiedlich groß gewählt werden. Es kann auch einer der Bahnstränge die Bahnspreizvorrichtung ohne Parallelversatz passieren während der andere parallel versetzt wird. Als besonderen Vorteil eröffnet die Erfindung die Möglichkeit, den Parallelversatz des einen der Bahnstränge unabhängig von dem anderen der Bahnstränge einzustellen.The parallel offset of the two web strands can therefore be chosen differently large. It can also pass the Bahnspreizvorrichtung without parallel offset one of the web strands while the other is offset in parallel. As a particular advantage, the invention opens up the possibility of setting the parallel offset of one of the web strands independently of the other of the web strands.
Die erfindungsgemäße Bahnspreizvorrichtung kann deshalb das Stellglied einer Bahnkantensteuerung für wenigstens einen der Bahnstränge und vorzugsweise für beide Bahnstränge bilden.The web spreading device according to the invention can therefore form the actuator of a web edge control for at least one of the web strands and preferably for both web strands.
Was die Verstellbarkeit anbetrifft, so kann beispielsweise jede der Umlenkeinrichtungen einzeln bewegbar in dem Gestell gelagert sein. Denkbar ist es beispielsweise auch, dass die erste linke Umlenkeinrichtung und die zweite rechte Umlenkeinrichtung bewegbar gelagert und die beiden anderen Umlenkeinrichtungen in dem Gestell fest eingespannt sind. Eine eventuelle Justierbarkeit zum Zwecke eines Ausgleichs von Fertigungstoleranzen sei was den Begriff der festen Einspannung anbetrifft einmal unberücksichtigt. Unter Verstellbarkeit versteht die Erfindung vielmehr, dass die betreffende Umlenkeinrichtung auch unter Beibehaltung solch einer gegebenenfalls vorgenommenen Justierung noch bewegbar ist. Die Bewegbarkeit ist ferner vorzugsweise so, dass die betreffende Umlenkeinrichtung nach dem Einzug einer neuen Bahn in die gewünschte Verstellposition bewegt werden kann. Besonders bevorzugt kann sie auch in der laufenden Produktion entlang ihres Verstellwegs bewegt werden. Dementsprechend umfasst die Spreizvorrichtung in besonders bevorzugter Ausführung eine Steuerungseinrichtung, die über eine Antriebseinrichtung für den Antrieb der bewegbaren Umlenkeinrichtungen verfügt und vorteilhafterweise zu einer Steuerungs- und Regelungseinrichtung weiterentwickelt sein kann. Grundsätzlich betrifft die Erfindung jedoch auch eine Bahnspreizvorrichtung, bei der die bewegbaren Umlenkeinrichtungen manuell in die gewünschten Verstellpositionen bewegt und in diesen Verstellpositionen fixiert werden.As far as the adjustability is concerned, for example each of the deflection devices can be mounted individually movable in the frame. It is conceivable, for example, that the first left-hand deflecting device and the second right-hand deflecting device are movably mounted and the other two deflecting devices are firmly clamped in the frame. A possible adjustability for the purpose of compensating for manufacturing tolerances is once again disregarded as far as the term of the fixed clamping is concerned. By adjustability, the invention rather means that the respective deflection device is still movable while maintaining such an adjustment if necessary. The mobility is also preferably such that the respective deflection device can be moved after the entry of a new track in the desired adjustment position. Particularly preferably, it can also be moved in the current production along its displacement. Accordingly, in a particularly preferred embodiment, the spreading device comprises a control device which has a drive device for driving the movable deflection devices and can advantageously be further developed into a control and regulating device. Basically, however, the invention also relates to a web spreading device in which the movable deflection devices are manually moved to the desired adjustment positions and fixed in these adjustment positions.
Die Flexibilität kann noch weiter gesteigert werden, wenn die Umlenkeinrichtungen und die Längsschneideinrichtung gemeinsam quer zu der Bahnförderrichtung linear geführt bewegbar sind. Vorzugsweise sind die Umlenkeinrichtungen und die Längsschneideinrichtung gemeinsam in dem Gestell gelagert, und es ist das Gestell im Ganzen relativ zu der Bearbeitungseinheit oder den mehreren Bearbeitungseinheiten quer zu der Bahnförderrichtung geradgeführt bewegbar.The flexibility can be further increased if the deflecting devices and the longitudinal cutting device are movable in a linear manner transversely to the web conveying direction. Preferably, the deflecting means and the longitudinal cutting means are mounted together in the frame, and the frame as a whole is movable straight relative to the processing unit or the plurality of processing units transversely to the web conveying direction.
Angemerkt sei schließlich noch, dass in einer laufenden Produktion nicht unumgänglich eine in der Spreizvorrichtung längs geschnittene Bahn verarbeitet werden muss, sondern es ebenso sein kann, dass die Bahn bereits in Strangbreite einläuft, beispielsweise weil sie bereits nur in Strangbreite auf einer Rolle aufgewickelt ist.It should be noted, finally, that in a current production not necessarily in the spreading longitudinally cut web must be processed, but it may also be that the web already enters strand width, for example, because it is already wound only in strand width on a roll.
Weitere bevorzugte Ausgestaltungen der Erfindung werden auch in den Unteransprüchen beschrieben.Further preferred embodiments of the invention are also described in the subclaims.
Die Erfindung wird nachfolgend an einem Ausführungsbeispiel erläutert. An dem Ausführungsbeispiel offenbar werdende Merkmale bilden je einzeln und in jeder Merkmalskombination die Gegenstände der Ansprüche weiter. Es zeigen:
Figur 1- eine Bahnspreizvorrichtung in einer Rollenrotationsdruckmaschine,
Figur 2- die Bahnspreizvorrichtung in einem Zustand, in dem zwei Stränge einer Bahn symmetrisch voneinander abgespreizt und mittig auf je einen Falztrichter geführt werden,
Figur 3- die Bahnspreizvorrichtung in einem Zustand, in dem die Stränge einer Bahn asymmetrisch voneinander abgespreizt und mittig je auf einen Falztrichter zugeführt werden und
Figur 4- die Spreizvorrichtung in einem Zustand, in dem die Stränge einer Bahn asymmetrisch voneinander abgespreizt und einer der Bahnstränge mittig und der andere der Bahnstränge außer mittig je auf einen Falztrichter geführt werden.
- FIG. 1
- a web spreading device in a web-fed rotary printing press,
- FIG. 2
- the web spreading device in a state in which two strands of a web are spread apart symmetrically from each other and guided centrally on a respective former,
- FIG. 3
- the web spreading device in a state in which the strands of a web are asymmetrically spread apart from each other and each fed centrally to a former, and
- FIG. 4
- the spreading device in a state in which the strands of a web are asymmetrically spread apart from each other and one of the web strands centered and the other of the web strands out of the center each guided on a former.
Die von dem Rollenwechsler 1 her in die Spreizvorrichtung einlaufende, ungeschnittene Bahn B wird über eine Einlauf-Leiteinrichtung 3 zu der Längsschneideinrichtung 4 gefördert. Die Längsschneideinrichtung 4 wird im wesentlichen von zwei aufeinander zuund voneinander abstellbaren Schneidrollen gebildet, zwischen denen die Bahn B hindurchgefördert wird. Durch den Längsschnitt werden der linke Bahnstrang Bl und der rechte Bahnstrang Br gebildet. Die Bahnstränge Bl und Br werden über eine erste Umlenkeinrichtung 5, eine unmittelbar folgende zweite Umlenkeinrichtung 6 und eine Auslaufleiteinrichtung 7 geführt. Anschließend werden sie über weitere Leiteinrichtungen, von denen eine auf die Auslauf-Leiteinrichtung 7 nächstbenachbart folgende Leiteinrichtung 8 dargestellt ist, zu dem Druckturm 9 gefördert. Die Längsschneideinrichtung 4 und die erste Umlenkeinrichtung 5 sind in einer festen Lagebeziehung zueinander in einem Gestell 2 gelagert. Die Einlauf-Leiteinrichtung 3 ist eine Leitwalze, die in dem Gestell 2 drehgelagert ist. Die erste Umlenkeinrichtung 5 ist nicht drehbar.The uncut web B entering the spreading device from the
Die zweite Umlenkeinrichtung 6 ist zusammen mit der Auslauf-Leiteinrichtung 7 in dem Gestell 2 lineargeführt bewegbar gelagert. Eine Linearführungsbahn 11 der Lagerung ist fest mit dem Gestell 2 verbunden. Die zweite Umlenkeinrichtung 6 und die Auslauf-Leiteinrichtung 7 sind entlang der Linearführung 11 zwischen zwei Extrempositionen kontinuierlich hin und her bewegbar. Die eine der beiden Extrempositionen ist in
Durch die mittige Teilung werden eine zweite linke Umlenkeinrichtung 6l und eine zweite rechte Umlenkeinrichtung 6r sowie eine linke Auslauf-Leiteinrichtung 7l und eine rechte Auslauf-Leiteinrichtung 7r gebildet. Die zweite linke Umlenkeinrichtung 6l und die linke Auslauf-Leiteinrichtung 7l sind dem linken Bahnstrang Bl zugeordnet, d.h. sie kommen nur mit dem linken Bahnstrang Bl in Kontakt. Die zweite rechte Umlenkeinrichtung 6r und die rechte Auslauf-Leiteinrichtung 7r sind dem rechten Bahnstrang Br zugeordnet, d.h. sie kommen nur mit dem rechten Bahnstrang Br in Kontakt. Entsprechend besteht auch eine Zuordnung bei der ersten Umlenkeinrichtung 5. Die erste Umlenkeinrichtung 5 ist allerdings in dem Gestell an dessen beiden gegenüberliegenden Gestellseiten 2l und 2r befestigt. Die erste Umlenkeinrichtung 5 zerfällt funktional in eine erste linke Umlenkeinrichtung 5l und eine erste rechte Umlenkeinrichtung 5r. Die Umlenkeinrichtungen 5l, 5r, 6l und 6r haben je den gleichen Querschnitt. Im Ausführungsbeispiel sind sie jeweils als kreisrunde Stangen gebildet.By the central division, a second left diverter 6l and a second
Die ersten Umlenkeinrichtungen 5l und 5r und insbesondere die von ihnen gebildeten Umlenkachsen bilden in der Draufsicht auf die Ebene der einlaufenden Bahn B eine Pfeilform, deren Spitze gegen die Bahnförderrichtung F weist. Die ersten Umlenkeinrichtungen 5l und 5r sind in der Mitte im Bereich der "Pfeilspitze" fest miteinander verbunden. Die Spitze selbst ist rund gearbeitet, um die Gefahr eines Anritzens der Bahn B zu vermeiden. Die Längsschneideinrichtung 4 und die von den ersten Umlenkeinrichtungen 5l und 5r gebildete Spitze liegen exakt auf der Maschinenachse S. Die Anordnung der Teile der Spreizvorrichtung, die dem linken Bahnstrang Bl zugeordnet sind, ist symmetrisch zu der Anordnung der Teile, die dem rechten Bahnstrang Br zugeordnet sind. Insoweit bildet die Maschinenachse S auch gleichzeitig eine Symmetrieachse der Spreizvorrichtung.The
Die linken Umlenkeinrichtungen 5l und 6l bilden zueinander parallele Umlenkachsen für den linken Bahnstrang Bl. Die rechten Umlenkeinrichtungen 5r und 6r bilden zueinander parallele Umlenkachsen für den rechten Bahnstrang Br. Die Verstellwege der zweiten Umlenkeinrichtungen 6l und 6r verlaufen so, dass die Parallelität der Umlenkachsen in jeder Verstellposition der zweiten Umlenkeinrichtungen 6l und 6r erhalten bleibt.The right-
Die Auslauf-Leiteinrichtungen 7l und 7r sind relativ zu den zweiten Umlenkeinrichtungen 6l und 6r so angeordnet, dass die von der zweiten linken Umlenkeinrichtung 6l und der linken Auslauf-Leiteinrichtung 7l im Falle der Umschlingung definierte Bahnstrangebene und die von der zweiten rechten Umlenkeinrichtung 6r und der rechten Auslauf-Leiteinrichtung 7r im Falle der Umschlingung definierte Bahnstrangebene parallel zu der Bahnebene ist, die von der Einlauf-Leiteinrichtung 3 und den beiden ersten Umlenkeinrichtungen 5l und 5r im Falle von deren Umschlingung vorgegeben wird. Die Auslauf-Leiteinrichtungen 7l und 7r bilden senkrecht zu der Bahnförderrichtung F weisende Umlenkachsen. Die zweite linke Umlenkeinrichtung 6l und die linke Auslauf-Leiteinrichtung 7l sind gemeinsam an einem linken Schlitten 10l gelagert. Die Lagerung an dem Schlitten 10l ist derart, dass die Umlenkachsen der zweiten linken Umlenkeinrichtung 6l und der linken Auslauf-Leiteinrichtung 7l relativ zu dem Schlitten 10l allenfalls im Rahmen von toleranzausgleichenden Justierungen verstellbar sind. Sinngemäß das gleiche gilt für die Lagerung der zweiten rechten Umlenkeinrichtung 6r und der rechten Auslauf-Leiteinrichtung 7r an dem rechten Schlitten 10r. Die beiden Schlitten 10l und 10r sind an ihrer jeweiligen Gestellseite 2l und 2r je entlang einer eigenen Linearführung 11 bewegbar, wobei die linke Linearführung 11 parallel zu der rechten Linearführung 11 weist und bezüglich der Bahnförderrichtung F auf der gleichen Höhe angeordnet ist. Die beiden Auslauf-Leiteinrichtungen 7l und 7r können an dem betreffenden Schlitten 10l und 10r drehgelagert sein. Grundsätzlich das gleiche gilt auch für die zweiten Umlenkeinrichtungen 6l und 6r, wobei der einfacheren Konstruktion wegen jedoch die Bildung jeweils als nicht drehbare Stange bevorzugt wird.The outlet guide means 7l and 7r are arranged relative to the second deflecting means 6l and 6r so that the web strand level defined by the second left deflecting means 6l and the left outlet guide 7l in the case of wrapping and that of the second right deflecting means 6r and Right
In dem in
Die Bahn B läuft symmetrisch zu der Maschinenachse S in die Spreizvorrichtung ein. Aufgrund dieser Bahnsymmetrie und der Positionierung der zweiten Umlenkeinrichtungen 6l und 6r in einer gemeinsamen Ebene werden die beiden Bahnstränge Bl und Br je zu einer Seite von der Maschinenachse S weg um den gleichen Versatz parallel nach außen voneinander abgespreizt. Es ergibt sich das Spreizmaß X, das den quer zu der Bahnförderrichtung F gemessenen lichten Abstand zwischen den Bahnsträngen Bl und Br bezeichnet. Mit "M" ist der in der Bahnebene gemessene Abstand zwischen einer linken Begrenzungslinie und einer rechten Begrenzungslinie bezeichnet, bis zu denen die Bahnstränge Bl und Br bei ausreichender Bahnbreite mittels der Spreizvorrichtung maximal nach links außen bzw. rechts außen parallel versetzt werden können. In dem dargestellten Zustand der Spreizvorrichtung bei symmetrischem Einlauf der Bahn B verbleibt zwischen der linken Außenkante des linken Bahnstrangs Bl und der linken Begrenzungslinie ein Abstand X/2. Ein ebensolcher Abstand verbleibt zwischen der rechten Begrenzungslinie und der rechten Bahnkante des rechten Bahnstrangs Br. Aufgrund der Bahnbreite Z, des symmetrischen Einlaufs, des symmetrischen Schnitts und der symmetrischen Abspreizung auf das Spreizmaß X, läuft der linke Bahnstrang Bl mittig in den ihm zugeordneten Längsfalztrichter 20, und der rechte Bahnstrang Br läuft ebenfalls mittig in den ihm zugeordneten Längsfalztrichter 21. Die Bahnstränge Bl und Br werden auch symmetrisch zu ihrem Längsfalz Ll und Lr bedruckt. Die Breiten der Bahnstränge Bl und Br sind mit A und die Teilbreiten beidseitig der Längsfalze Ll und Lr sind mit A' angegeben. Es gilt somit: Z = 2A = 4A'. Anzumerken ist, dass der Falztrichter 20 und der Falztrichter 21 von einem einzigen Falztrichter gebildet werden können.The web B enters symmetrically to the machine axis S in the spreading device. Because of this track symmetry and the positioning of the
In dem Ausführungsbeispiel der
In dem zweiten Ausführungsbeispiel befindet sich die Spreizvorrichtung in einem Zustand, in dem der rechte Schlitten 10r mit der zweiten rechten Umlenkeinrichtung 6r und der rechten Auslauf-Leiteinrichtung 7r nicht in den Weg des rechten Bahnstrangs Br ragt und dementsprechend keinen umschlingenden Kontakt mit dem rechten Bahnstrang Br hat. Der rechte Bahnstrang Br wird daher ohne seitlichen Versatz durch die Spreizvorrichtung hindurchgefördert. Die Verstellposition der zweiten rechten Umlenkeinrichtung 6r und der rechten Auslauf-Leiteinrichtung 7r entspricht der in
Für das zweite Ausführungsbeispiel wird unterstellt, dass die Bahn B eine andere Breite Z als die Bahn B des in
In dem in
Bei dem Einzug eines freien Bahnanfangs einer neuen Bahn wird die neue Bahn von dem Rollenwechsler 1 über die Einlauf-Leiteinrichtung 3 und zwischen den voneinander abgestellten Schneidrollen der Schneideinrichtung 4 hindurchgeführt. Anschließend wird der Bahnanfang gerade, d.h. ohne Umschlingung der Umlenkeinrichtungen 5l bis 6r und Auslauf-Leiteinrichtungen 7l und 7r bis zu der weiteren Auslauf-Leiteinrichtung 8 geführt und unter Umschlingung der Auslauf-Leiteinrichtung 8 sowie gegebenenfalls über noch weitere Leiteinrichtungen durch den Druckspalt oder die mehreren Druckspalte des Druckturms 9 bis auf die Falztrichter 20 und 21 eingezogen. Die Falztrichter 20 und 21 können, wie bereits erwähnt, ein einziger Falztrichter sein, auf den beide Bahnstränge Bl und Br zusammengeführt werden. Die zweiten Umlenkeinrichtungen 6l und 6r und die Auslauf-Leiteinrichtungen 7l und 7r nehmen ihre in
Um die Reibung zu verringern, weisen die Umlenkeinrichtungen 5l bis 6r auf ihren Manteloberflächen Blasluftlöcher auf, durch die hindurch wie von Wendestangen bekannt die umschlingenden Bahnstränge Bl und Br mit Blasluft beaufschlagbar sind. Sobald eine der Umlenkeinrichtungen 5l bis 6r gegen den betreffenden Bahnstrang Bl oder Br gefahren wird, wird die Blasluft eingeschaltet. Das Einschalten der Blasluft erfolgt selbstverständlich automatisiert, beispielsweise in Abhängigkeit von der Verstellposition der zweiten Umlenkeinrichtungen 6l und 6r und vorzugsweise unter der Kontrolle der Steuerungseinrichtung 15.In order to reduce the friction, the
Die durch die Form der beiden Linearführungen 11 vorgegebenen Verstellwege der zweiten Umlenkeinrichtungen 6l und 6r und Auslauf-Leiteinrichtungen 7l und 7r verlaufen schräg linear zu der Bahnebene je innerhalb einer zu der Bahnebene senkrechten, längs zu der Bahn weisenden Verstellwegebene. Die beiden Verstellwege sind wie bereits erwähnt zueinander parallel. Die Ausrichtung der Verstellwege ist ferner so, dass die zweiten Umlenkeinrichtungen 6l und 6r und Auslauf-Leiteinrichtungen 7l und 7r für eine Vergrößerung des Spreizmaßes X gegen die Bahnförderrichtung F bewegt werden. In der Extremposition der maximalen Abspreizung laufen die Bahnstränge Bl und Br zwischen den ersten Umlenkeinrichtungen 5l und 5r und den zweiten Umlenkeinrichtungen 6l und 6r in einem rechten Winkel zu der durch die Einlauf-Leiteinrichtung 3 und die ersten Umlenkeinrichtungen 5l und 5r definierten Bahnebene. Zu dieser Bahnebene ist, wie bereits erwähnt, die von den zweiten Umlenkeinrichtungen 6l und 6r und den Auslauf-Leiteinrichtungen 7l und 7r definierte Bahnstrangebene parallel. Die Bahnebene zwischen der Einlauf-Leiteinrichtung 3 und den ersten Umlenkeinrichtungen 5l und 5r einerseits und die Bahnstrangebene zwischen den zweiten Umlenkeinrichtungen 6l und 6r und den Auslauf-Leiteinrichtungen 7l und 7r andererseits sind in allen Verstellpositionen je parallel.The predetermined by the shape of the two
Claims (13)
- A web spreading device for a web processing machine, in particular a rotary printing machine, said web spreading device comprising:a) a frame (2);b) a cutting means (4) for longitudinally cutting a web (B) into a left-hand web strand (Bl) and a right-hand web strand (Br);c) a first left-hand deflecting means (5l) for the left-hand web strand (Bl);d) a second left-hand deflecting means (6l) for the left-hand web strand (Bl), which is arranged downstream of the first left-hand deflecting means (5l) in the web conveying direction (F);e) a first right-hand deflecting means (5r) for the right-hand web strand (Br), which points towards the first left-hand deflecting means (5l);f) and a second right-hand deflecting means (6r) for the right-hand web strand (Br), which is arranged downstream of the first right-hand deflecting means (5r) in the web conveying direction (F) and points towards the second left-hand deflecting means (61),g) wherein the web strands (Bl, Br) can be spread relative to each other in parallel by a degree of spreading (X) by looping around the deflecting means (5l, 6l, 5r, 6r),h) and wherein at least one of the left-hand deflecting means (5l, 6l) and at least one of the right-hand deflecting means (5r, 6r) are mounted in the frame (2) such that they can each be moved by an adjustment path, in order to be able to adjust the degree of spreading (X),
characterised in thati) one of the second deflecting means (6l, 6r) can be moved by an adjustment path relative to the other of the second deflecting means (6l, 6r) and/or one of the first deflecting means can be moved by an adjustment path relative to the other of the first deflecting means, such that the length of the strand path between the left-hand deflecting means (5l, 6l) differs from the length of the strand path between the right-hand deflecting means (5r, 6r). - The web spreading device according to the preceding claim, characterised in that either the first deflecting means (5l, 5r) or the second deflecting means (6l, 6r) are fixedly clamped in the frame (2).
- The web spreading device according to any one of the preceding claims, characterised in that the at least one movably mounted left-hand deflecting means (6l) and the at least one movably mounted right-hand deflecting means (6r) are both a first deflecting means or are both a second deflecting means (6l, 6r).
- The web spreading device according to the preceding claim, characterised in that the at least one movably mounted left-hand deflecting means (6l) and the at least one movably mounted right-hand deflecting means (6r) can be moved on their adjustment paths into a number of adjustment positions and into joint web strand planes in which they jointly form an arrow shape.
- The web strand device according to the preceding claim, characterised in that the at least one movably mounted left-hand deflecting means (6l) and the at least one movably mounted right-hand deflecting means (6r) can be moved jointly moved along their adjustment paths, while maintaining their arrow shape.
- The spreading device according to any one of the preceding claims, characterised in that a control means (15) is provided which comprises a drive means (12) for the movably mounted deflecting means (6l, 6r) in order to move the movably mounted deflecting means (6l, 6r) into the adjustment positions required for setting the degree of spreading (X) and to fix them in the adjustment positions.
- The web spreading device according to any one of the preceding claims, characterised in that the spreading device comprises a left-hand run-out channelling means (71) for the left-hand web strand (Bl) and a right-hand run-out channelling means (7r) for the right-hand web strand (Br), which are mounted in the frame (2) such that they can be moved relative to each other downstream of the second deflecting means (6l, 6r) in the web conveying direction (F), and in that the run-out channelling means (7l, 7r) and the movably mounted second deflecting means (7l, 7r) can be moved into adjustment positions in which they jointly determine a plane for the web strands (Bl, Br).
- The web spreading device according to the preceding claim, characterised in that the left-hand run-out channelling means (7l) and the second left-hand deflecting means (6l) are mounted such that they can be moved jointly, and the right-hand run-out channelling means (7l) and the second right-hand deflecting means (7l) are also mounted such that they can be moved jointly.
- The web spreading device according to any one of the preceding claims, characterised in that the movably mounted deflecting means (6l, 6r) can be moved into adjustment positions in which only the left-hand deflecting means (5l, 6l) are looped around by the left-hand web strand (Bl) or only the right-hand deflecting means (5r, 6r) are looped around by the right-hand web strand (Br), in order to offset one of the web strands (Bl, Br) in parallel and to convey the other of the web strands (Bl, Br) through the spreading device without being offset.
- The web spreading device according to any one of the preceding claims, characterised in that the movably mounted deflecting means (6l, 6r) are linearly guided on their adjustment paths.
- The web spreading device according to the preceding claim, characterised in that the movably mounted deflecting means (6l, 6r) project from carriages (10l, 10r) which are each guided on a linear guide (11) of the frame (2).
- The web spreading device according to any one of the preceding claims, characterised in that the cutting means (4) and the deflecting means (5l, 6l, 5r, 6r) are mounted such that they can be jointly moved transverse to the web conveying direction (F), relative to the web (B).
- The web spreading device according to any one of the preceding claims, characterised in that the web spreading device is used as an actuating member of a web edge controller of at least one of the web strands (Bl, Br).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10234674A DE10234674B4 (en) | 2002-07-30 | 2002-07-30 | Bahnspreizvorrichtung |
DE10234674 | 2002-07-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1386869A2 EP1386869A2 (en) | 2004-02-04 |
EP1386869A3 EP1386869A3 (en) | 2005-04-06 |
EP1386869B1 true EP1386869B1 (en) | 2008-03-26 |
Family
ID=30010510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03405562A Expired - Lifetime EP1386869B1 (en) | 2002-07-30 | 2003-07-28 | Web spreading device |
Country Status (5)
Country | Link |
---|---|
US (1) | US6802110B2 (en) |
EP (1) | EP1386869B1 (en) |
JP (1) | JP2004106516A (en) |
AT (1) | ATE390375T1 (en) |
DE (2) | DE10234674B4 (en) |
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US6938309B2 (en) * | 2002-12-13 | 2005-09-06 | 3M Innovative Properties Company | Zoned stretching of a web |
DE10337248B4 (en) | 2003-08-13 | 2009-12-17 | Maschinenfabrik Wifag | Web spreading method and web spreading device |
ITMI20041669A1 (en) * | 2004-08-26 | 2004-11-26 | S I A T Societa Internaz | METHOD AND MACHINE FOR CUTTING A SELF-ADHESIVE TAPE IN A MULTIPLE OF THIN TAPES AND FOR THEIR REWINDING. |
EP1634831B1 (en) * | 2004-09-10 | 2010-08-04 | WIFAG Maschinenfabrik AG | Web spreading method and web spreading device |
GB2419876A (en) * | 2004-11-08 | 2006-05-10 | Goss Graphic Systems Ltd | Device and method for cutting and deflecting a printing web |
CN100363246C (en) * | 2005-03-18 | 2008-01-23 | 李法岗 | Soft roll material translation device |
DE102005034331B4 (en) * | 2005-04-13 | 2009-04-09 | Koenig & Bauer Aktiengesellschaft | Rotary press |
JP4008023B2 (en) * | 2005-09-05 | 2007-11-14 | 住友ベークライト株式会社 | Tubular resin film cutting and winding apparatus and cutting and winding method |
DE102005048246B4 (en) * | 2005-10-07 | 2009-09-10 | Maschinenfabrik Wifag | Rotary printing machine with elongation compensator and method for printing a longitudinally cut web |
WO2007124951A1 (en) * | 2006-05-02 | 2007-11-08 | Wifag Maschinenfabrik Ag | Device for spreading web runs |
JP4587999B2 (en) * | 2006-08-31 | 2010-11-24 | 花王株式会社 | Absorbent article manufacturing method and manufacturing apparatus |
DE102007004408B4 (en) * | 2007-01-30 | 2011-12-08 | Koenig & Bauer Aktiengesellschaft | Method for compensating for a transverse expansion of a substrate web and a printing press |
US20080203131A1 (en) * | 2007-02-26 | 2008-08-28 | Mirek Planeta | Film guiding assembly |
DE102007016496A1 (en) * | 2007-04-05 | 2008-10-09 | Koenig & Bauer Aktiengesellschaft | Rotary printing machine for printing newspaper, has hoppers to fold partial webs that are spaced at distance from each other by unit before webs are guided to hoppers such that webs are guided independent of each other in hopper levels |
JP2008265918A (en) | 2007-04-18 | 2008-11-06 | Tokyo Kikai Seisakusho Ltd | Turn bar device for rotary press |
DE102007035432A1 (en) * | 2007-07-28 | 2009-01-29 | Manroland Ag | Rotary press |
DE102008005392A1 (en) | 2008-01-21 | 2009-07-30 | Manroland Ag | Paper web spreading device for rotary printing press, has deflection device and/or deflection units adjusted, where web running sections length is adjustable in breadth direction of web, and units adapted to web breadths |
EP2208616A1 (en) * | 2009-01-14 | 2010-07-21 | WIFAG Maschinenfabrik AG | Device and method for spreading webs in rotary printing |
DE102009044473A1 (en) * | 2009-10-05 | 2011-04-07 | Krones Ag | Device for guiding a variable number of partial webs of a continuous film and method for changing a first number to a second number of guided partial webs |
DE102012009648A1 (en) * | 2012-05-14 | 2013-11-14 | Weber Maschinenbau Gmbh Breidenbach | spreading |
DE102012106389A1 (en) * | 2012-07-16 | 2014-05-22 | Windmöller & Hölscher Kg | Reversing device for a film web |
CN103568479A (en) * | 2013-10-10 | 2014-02-12 | 安徽华印机电股份有限公司 | Web gravure press |
DE102013113289A1 (en) * | 2013-12-02 | 2015-06-03 | Khs Gmbh | Device and method for cutting a web material in partial webs and spreading the partial webs |
JP6875875B2 (en) * | 2017-02-16 | 2021-05-26 | 株式会社ミマキエンジニアリング | Printing equipment and curl correction method |
IT202100026405A1 (en) * | 2021-10-14 | 2023-04-14 | Costruzioni Mecc Luigi Bandera S P A | APPARATUS TO PERFORM THE DIVISION AND SPREADING OF A CONTINUOUS BELT |
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US1927849A (en) * | 1932-06-29 | 1933-09-26 | Hellwig Silk Dyeing Company | Cloth expander and guide |
US2198656A (en) * | 1938-02-16 | 1940-04-30 | Samcoe Holding Corp | Apparatus for rectifying traveling strips |
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US3161563A (en) * | 1962-09-04 | 1964-12-15 | Method and apparatus for the lateral stretching of webs, and resultant product | |
US3171579A (en) * | 1963-08-22 | 1965-03-02 | Mount Hope Machinery Ltd | Sheet guiding and width control apparatus |
US3719975A (en) * | 1970-06-11 | 1973-03-13 | Ivanovsky Ni Ex K Mashinostroi | Arrangement for eliminating distortions of weft threads in fabric |
US4017227A (en) * | 1974-06-29 | 1977-04-12 | Hoechst Aktiengesellschaft | Apparatus for increasing the production output of stretched flat film webs composed of thermoplastic material |
US4495124A (en) * | 1980-04-22 | 1985-01-22 | Signode Corporation | Method for producing polypropylene sheet |
DE8717253U1 (en) * | 1987-01-15 | 1988-06-23 | Benz & Hilgers GmbH, 40470 Düsseldorf | Device for deflecting and lateral deflection of various strips produced from a material web, for example a paper web, by longitudinal cutting |
US4811880A (en) * | 1987-11-17 | 1989-03-14 | M-A-N Ashton Inc. | Continuous web handling apparatus and method of separating web sections |
DE10023169A1 (en) * | 2000-05-11 | 2001-11-15 | Roland Man Druckmasch | Dual action spreader for spreading strip material in rotation print machine with cutter has arrow-shaped turning bars either side of material, each with two connected rods in plane |
US6785937B2 (en) * | 2002-04-24 | 2004-09-07 | Kimberly-Clark Worldwide, Inc. | Slit neck spunbond process and material |
-
2002
- 2002-07-30 DE DE10234674A patent/DE10234674B4/en not_active Expired - Fee Related
-
2003
- 2003-07-28 EP EP03405562A patent/EP1386869B1/en not_active Expired - Lifetime
- 2003-07-28 US US10/629,046 patent/US6802110B2/en not_active Expired - Fee Related
- 2003-07-28 JP JP2003202535A patent/JP2004106516A/en active Pending
- 2003-07-28 AT AT03405562T patent/ATE390375T1/en not_active IP Right Cessation
- 2003-07-28 DE DE50309447T patent/DE50309447D1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE10234674A1 (en) | 2004-02-19 |
ATE390375T1 (en) | 2008-04-15 |
EP1386869A3 (en) | 2005-04-06 |
US20040021032A1 (en) | 2004-02-05 |
DE50309447D1 (en) | 2008-05-08 |
EP1386869A2 (en) | 2004-02-04 |
DE10234674B4 (en) | 2010-04-29 |
US6802110B2 (en) | 2004-10-12 |
JP2004106516A (en) | 2004-04-08 |
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