EP2013127A1 - Vorrichtung zum spreizen von bahnsträngen - Google Patents
Vorrichtung zum spreizen von bahnsträngenInfo
- Publication number
- EP2013127A1 EP2013127A1 EP07724790A EP07724790A EP2013127A1 EP 2013127 A1 EP2013127 A1 EP 2013127A1 EP 07724790 A EP07724790 A EP 07724790A EP 07724790 A EP07724790 A EP 07724790A EP 2013127 A1 EP2013127 A1 EP 2013127A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- deflection
- web
- bahnspreizvorrichtung
- deflecting
- 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.)
- Granted
Links
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
- B65H23/32—Arrangements for turning or reversing webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/02—Conveying or guiding webs through presses or machines
- B41F13/06—Turning-bar arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F13/00—Common details of rotary presses or machines
- B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
- B41F13/56—Folding or cutting
- B41F13/58—Folding or cutting lengthwise
-
- 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
-
- 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
- B65H2301/31—Features of transport path
- B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
- B65H2301/3112—S-shaped
-
- 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 device for spreading web strands in or for a web-processing machine, in particular printing press.
- the machine is preferably a web-fed rotary printing press, preferably for offset printing, in particular wet offset. It may be a commercial press or, more preferably, a large format newspaper press.
- Devices for spreading web strands are known, for example, from DE 103 37 248 A1 and DE 100 23 169 A1.
- the known devices are limited to the use in printing machines for a maximum of four pages wide newspaper printing.
- a device for spreading web strands, in the following web spreading device, comprises cutting devices for longitudinal cutting of a web at least in a left, a right and a middle web strand and also a left deflection for the left web strand, a right deflection for the right web strand and a middle deflection for the middle track.
- the deflection devices each comprise at least two deflecting means, each of which forms a deflection axis for one of the web strands.
- the deflection axes of at least two of the deflection devices point to the conveying direction of the respective associated web strand and also relative to the conveying direction of the remaining further web strand seen in a plan view of the respective web strand immediately before entering the associated deflection, in each case an inclination.
- the web strands deflected about the inclined deflecting axes are offset parallel to themselves after the double deflecting, relative to the position of the respective web strand before deflecting, and also to the at least one further web strand.
- the inclination of the deflection axes is preferably selected so that the at least two parallel offset web strands of the at least one further web strand and, should they be next to each other, also have a distance from each other.
- the deflection axes for the one and the deflection axes for the at least one further web strand to be offset in parallel can be inclined with respect to the conveying direction of the incoming web strands to the same side and only with angles of different sizes, so that the web strands with differently large offset, but be offset to the same side.
- the inclination angles with respect to the conveying direction each have different signs, so that one of the web strands is shifted to the left and the at least one other web strand is shifted to the right, the offset of the web strands being different or preferably the same.
- the web spreading device is particularly suitable for use in a six-page-wide printing press, in order to spread off three web strands, each two-sided wide, from each other and to convey them centrally to one longitudinal folding hopper each.
- the funnels can each be arranged in a fixed position for printing on a web of maximum width.
- the web spreading device can be printed without changing the positions of the funnels also six-page-wide webs that are narrower than the maximum width by longitudinally cut such webs and the web strands are spread in the middle of the funnels.
- the invention is not limited to the spreading of uniform web strands.
- webs that are five pages wide and can be cut longitudinally into two two-page-wide web cords and one page-wide web cords can also be processed.
- even narrower webs can be processed, for example, three-side-wide webs, which are cut longitudinally into three webs, each one-side-wide, in the following sub-strands, and positioned by spreading with respect to the funnels.
- the examples given illustrate the gain in flexibility with regard to the configuration, but do not limit the invention to the aforementioned web and sub-strand widths.
- Web spreading device can be positioned at least three sub-strands with respect to the funnels, while the funnels do not need to be adjusted and in preferred simple embodiments also transversely to the conveying direction of the funnels running partial strands not adjustable, but are immovably mounted.
- the web spreading device can also advantageously be combined with funnels which can be laterally adjusted transversely to the conveying direction in order to increase the flexibility even further.
- At least one of the deflection devices are arranged to be movable transversely to the respectively assigned sub-strand, viewed in a plan view onto the sub-strand entering the respective deflection device immediately before looping around an inclined first deflection means respective deflection.
- the longitudinal cutting devices are advantageously adjustable in the same sense, preferably one of the longitudinal cutting devices, each with a transversely adjustable deflection mechanically coupled. The mechanical coupling is such that a transverse adjustment of the respective deflection device effects a transverse adjustment of the respectively associated longitudinal cutting device by the same amount.
- At least one of its deflection means is adjustable in length transversely to the conveying direction of an associated sub-strand at least in one of the deflection devices.
- at least one deflection means of the central deflection device is adjustable in length.
- only one of the deflection means of the respective deflection device is adjustable in length.
- a plurality of the deflection means or all deflection means of the respective deflection device are adjustable in length.
- the or the further (s) deflection means of the at least one length-adjustable deflection device is or are preferably so long in the first variant that it or they support or support the wrap-around partial strand over its entire width.
- the one or more deflection means of the length-adjustable deflection device may or may extend over the entire width of the web spreading device.
- the word “or” is understood here and elsewhere in the sense of "and / or”, thus always contains the meaning of "either or” and also the further meaning of "and”, as far as the context does not necessarily mean something else can only result.
- partial strands need to be offset parallel to themselves, although a corresponding web spreading device is also an object of the invention.
- a corresponding web spreading device is also an object of the invention.
- the middle sub-strand can be conveyed without offset through the web spreading device, and the left sub-strand can be spread to the left and the right sub-strand can be spread to the right away from the middle sub-strand.
- the non-staggered sub-string is preferably guided by means of the associated deflection so that it covers the same path length as the parallel to itself offset, ie splayed partial strands.
- the respective deflection device serves as a web length compensator.
- the non-spread partial strand is deflected so that act on him at least substantially the same frictional forces as on the deflected partial strands.
- the deflection which also includes the Bruinnkompensator
- each comprise the same number of deflection and corresponding deflection axes and the sub-strands experience not only the sum of the same total wrap, but also the wrap angles are equal to each other, for example in that the first deflecting means with the same wrap angle and the at least one further second deflecting means are each looped around at the same wrap angle in each of the deflecting devices.
- the path length compensator is preferably designed such that it both aligns the path length for the relevant partial strand with the path lengths of the other partial strands and also simulates its wrap angle. It is advantageous if this deflection device is the length-adjustable deflection device.
- the Bahnsp Schwarzvorraum can be arranged only behind a printing unit or more the sub strands successive printing units, ie between the printing unit or the plurality of printing units on the one hand and a turning device and subsequent funnels on the other.
- the cutting devices can be arranged in front of the printing unit (s) or preferably behind it and preferably directly in front of the deflection devices of the spreading device.
- the web spreading device is arranged in front of a first printing unit in which one, several or all of the partial strands guided by the web spreading device are or will be printed.
- the longitudinal section of wide webs in several sub-strands before printing opens up new opportunities to dominate the so-called fan-out effect in the printing unit, since the change in width associated with a moisture absorption and the longitudinal tension in a simpler manner than in a broader overall web can be compensated.
- the web-spreading device in such embodiments is arranged between a reel splicer from which the web unwinds and the first printing press in the web path.
- the deflection device forming the web length compensator can be arranged before or more preferably in the web path behind the deflection devices for the other sub-strands.
- the deflection device for the non-displaceable sub-strand is arranged in the conveying direction at least substantially at the same height beside or preferably between other deflection devices of the web spreading device. This allows a particularly compact design, so that such a web spreading claimed only little space in the machine and the spreading of the strands and the preferred length compensation can be performed within a short track length.
- the respective deflection devices provided for this purpose can be raised and lowered in relation to the plane of the respectively assigned sub-strand.
- Lifting and lowering mechanisms for the at least three deflection devices can each have a linear guide and a drive for the lifting and lowering movements the deflection devices, preferably each have their own linear guide and its own drive per deflection.
- the drives can in particular each comprise a spindle extending in the raising and lowering direction, a rotary drive for the spindles and a spindle counterpart per spindle, wherein the spindles are in threaded engagement with the respectively assigned spindle member and the respective counter member is linearly guided, so that Rotary movements of the spindle cause a corresponding linear lifting or lowering movement of the respective spindle counter member.
- Such lifting and lowering mechanisms are particularly advantageous for the left and the right deflection.
- a lifting and lowering mechanism comprising a linkage with at least two axes and each axis at least two pivotable link arms, wherein per axis each one of the link arms hingedly connected to the frame of the web processing machine and the other linkage arm articulated to a carrier is.
- On the support is one of the deflection or are preferably two, possibly even more deflection arranged, around which or the associated sub-strand is deflected.
- the lifting and lowering mechanism further comprises a coupling member which mechanically couples the at least two axes.
- the coupling member may in particular be a spindle which is in threaded engagement with each of the two axes.
- the lifting and lowering mechanism comprises a drive, preferably an electric motor, which advantageously drives the coupling member and can be supported in such embodiments on, for example, one of the axles.
- the linkage arms spread apart like scissors during the raising and lowering movement and thus reduce the distance between the carrier and the articulated connection with the frame.
- FIG. 2 shows the web spreading device of the first exemplary embodiment in a plan view of the plane of an incoming web
- FIG. 3 shows a deflecting device of the first exemplary embodiment for length compensation in the case of a non-spread partial strand.
- FIG. 4 shows three partial strands conveyed by the web spreading device of the first exemplary embodiment
- FIG. 5 shows three partial strands spread by means of a web spreading device of a second embodiment
- FIG. 6 spreading operations that can be carried out by means of the web spreading device of the first exemplary embodiment
- FIG. 7 shows a longitudinal expansion compensator and a directly upstream guide device
- FIG. 8 shows the guide device in a longitudinal section
- FIG. 9 shows the guide device in a plan view
- FIG. 10 shows a web spreading device of a third embodiment in a state for a maximum spread of partial strands
- FIG. 11 shows the web spreading device of the third embodiment in a state for zero spread.
- Figure 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 P to be printed, which leads from a roll changer 1 via the web spreading device to a printing tower 20.
- the web spreading device includes left and right longitudinal cutters 4 which serve to cut the web P longitudinally into three web strands T and diverters 5 and 6 by means of which the sub strands T can be spread apart in parallel.
- the splayed web strands T are conveyed in the conveying direction F to the printing tower 20 and printed on both sides depending on multi-colored.
- several printing units are arranged vertically one above the other.
- the printing units each comprise two printing cylinders 24 forming a printing gap for double-sided printing, the printing-cylinder cylinders assigned to the printing cylinders 24, and associated dyeing and dampening units for the wet offset. setscher.
- the sub strands T are either separately or ever with at least one other web strand fed on formers 21, 22 and 23 or on a common former and separated by means of the former or folded together along a common former.
- Behind the former or the plurality of formers 21, 22 and 23 can be arranged in the conveying direction F, a folder or multiple folders for cross cutting and Querfalzen.
- the incoming from the roll changer 1 in the web spreading device web P is conveyed via an inlet guide 3 to the longitudinal cutting devices 4.
- the longitudinal cutting devices 4 have, per longitudinal section, two cutting blades which can be put on and off one another and between which the web P is conveyed through.
- the partial strands T obtained by the longitudinal section run close to each other up to a left deflection device for the left partial strand and a right deflection device for the right partial strand.
- the left and right deflecting means each comprise a first deflecting means 5, an immediately following second deflecting means 6 and a third deflecting means 7 following the second deflecting means 6 directly in the track.
- the left and right sub-strings wrap around the deflecting means 5, 6 and 7 of FIG respectively associated deflection device.
- the middle sub-string is conveyed straight between the deflection devices 5, 6, 7 and unaffected by these until a track length compensator 25a-c.
- the deflection means 5 and 6 have, in a plan view, the outer partial strands T running onto the deflection means 5 with an inclination to the conveying direction F of these partial strands T.
- the deflection means 6 are parallel to the deflection means 5, so that the two outer partial strands T are parallel to one another itself and offset from the middle sub-strand T away to the outside and spread in this sense.
- the deflecting means 7 are exactly perpendicular to the conveying direction F of the respective ascending partial strand T.
- the middle partial strand T is conveyed without offset through the web spreading device.
- the web length compensator 25a-c which comprises a first deflecting means 25a, a second deflecting means 25b and a third deflecting means 25c, around which the middle sub-string T is deflected in each case. All three sub-strands T are guided behind the respective third deflection device 7 or 25c via an outlet guide 8. The three sub-strands T together wrap around the outlet guide 8 and are from there via a biasing mechanism 19 in and through the printing tower 20 and finally via the funnel or the plurality of funnels 21, 22 and 23 required.
- FIG. 1 shows the two second deflection devices 6 and the two third deflection devices 7, one for the left and one for the right partial strand T, in its two possible end positions, once out of engagement with the respectively assigned partial strand T and once in one End position for maximum parallel offset.
- the mobility of the deflectors 6 and 7 is indicated by a double arrow.
- the upper position of the deflecting devices 6 and 7 is the position for zero spreading, in which the deflecting devices 6 and 7 do not touch the respectively assigned sub-string T.
- the lower position in FIG. 1 is the position for maximum spread.
- the length compensator 25a-c is shown in the state of maximum web path extension or web length enlargement, which it occupies when the deflecting devices 5, 6, 7 are in the state of maximum spread.
- the middle deflection means 25b is movable relative to the two other deflection means 25a and 25c in the direction of enlargement and in the direction of a reduction of the path length of the middle sub-strand T to and fro.
- the direction of mobility is indicated by a directional arrow.
- the deflecting means 6 and 7 and also the deflecting means 25b are preferably infinitely adjustable back and forth along the respective adjustment path, so that the extent of the offset and, matched to the offset, the web length change of the middle sub-strand T can be adjusted continuously.
- Figure 2 shows the web spreading device in a plan view of the plane of the incoming web P, which is also the level of the partial strands T to the first deflection means 5.
- the sub-strands with T 1 for the left sub-strand, T 2 for the middle and T 3 are designated for the right sub-strand.
- the outer diverters are distinguished by the use of the letters "1" for left and "r" for right.
- the left and right deflection means 51, 61 and 71 and 5r, 6r and 7r are arranged symmetrically to an imaginary, extended in the conveying direction F center line.
- the first and second deflection means 51, 61 and 71 as well as 5r, 6r and 7r have an arrow shape in the plan view against the conveying direction F, but do not abut one another in the middle. Rather, between the deflection means 51 and 5r and 5r and 6r so much space remains that the middle sub-strand T 2 between the left and right deflection means 51, 61 and 71 and 5r, 6r and 7r in a straight line, can be required without change of direction to the arranged in the conveying direction F Bruterionkomp- pensator 25a-c.
- the left and right deflection means 51 to 7r and the Bruinnkompensator 25a-c are raised and lowered not only as already mentioned for the spreading and the path length compensation with respect to the level of the respective sub-string Ti, T 2 or T 3 , in Figure 1 vertical direction, but for the purpose of adaptation to different widths of webs P or for longitudinal cutting in different width strands Ti, T 2 and T 3 transversely to the conveying direction F and to the direction of lifting and lowering mobility movable.
- the second type of mobility is a horizontal mobility.
- the web spreading device comprises a left bearing device 3 for the left deflection means 51, 61 and 71 and a right bearing device 3 for the right deflection means 5r, 6r and 7r.
- the two storage facilities 3 are supported by the frame G toward and away from each other movably.
- the storage facilities 3 are linearly guided by the frame slide.
- the first deflection means 51 and 5r are arranged stationary relative to the respective bearing device 3.
- the deflecting means 51 and 5r are fixedly connected to the respective bearing means 3 deflecting rods, which can be advantageously surrounded by an inner compressed air supply at its outer periphery with air to reduce the friction for the respective sub-strand Ti or T 3 during spreading.
- the web spreading device further comprises a left-hand carrier 101 for the left-hand deflecting means 61 and 71 and a right-hand carrier 1Or for the right-hand deflecting devices 6r and 7r.
- the left-hand carrier 101 is supported on the left-hand storage device 3, and the right-hand carrier 1Or is supported on the right-hand storage device 3, and can be lowered.
- the storage facilities 3 each form a linear guide for the associated carrier 101 or 1Or.
- the deflection means 61 and 71 are on the carrier 101 and the deflection means 6r and 7r are fixedly arranged on the carrier 1Or.
- the deflection 61 and 71 are each permanently mounted. They are deflection rods, preferably as the deflection means 51 and 5r.
- the deflecting means 71 and 7r may alternatively be rotatable about the respective carrier 101 or 1Or by one each perpendicular to the conveyor belt. be stored direction F facing deflection axis.
- the deflecting means 61, 71 and 6r and 7r are lowered into the respective sub-string Ti or T 3 , so that the respective angle of wrap increases.
- the lifting movement is understood to mean the movement in the direction of a reduction of the respective wrap angle.
- a lowering movement is accordingly the Sp DrISSchez, ie the parallel offset, increased and reduced by a lifting movement.
- the first deflecting means 25a and the third deflecting means 25c are stationary with respect to the frame G and both are arranged facing the upper or lower side of the middle sub-string T 2 .
- the deflection means 25a and 25c are rotatably mounted rotary bodies with deflection axes perpendicular to the conveying direction F of the middle sub-string T 2 .
- the middle deflecting means 25b can be raised and lowered on the other side of the sub-string T 2 seen from the deflection means 25a and 25c.
- the deflection means 25b is not rotatable, but preferably as the deflection means 5 with compressed air um Hughesbar.
- the Bruinnkompensator 25a-c is set up so that the sum of the wrap angle of the middle sub-strand T 2 at 25a, 25b and 25c at least substantially, preferably exactly equal to the sum of the wrap angle of the other two sub-strands T 1 and T 2 at 51, 61 , 71 and 5r, 6r, 7r is.
- the middle deflection 25b is adjustable in length parallel to its deflection axis. It is for this purpose formed as a telescope with a middle and a left and a right telescopic part.
- the left and the right telescopic part are axially movable relative to the central telescopic part, preferably independently of one another, whereby the axial length of the deflection means 25b is adjustable.
- the length adjustment is tuned to the adjustment of the left and right deflection 5, 6 and cutting device 4. For tuning the left telescopic part with the left bearing device 3 and the right telescopic part with the right bearing device 3 is mechanically coupled.
- the middle telescope part is, however, axially movable relative to the frame G, but only together with the left and right telescopic part raised and lowered arranged.
- the deflection means 25b is not mechanically coupled to the deflection means 61, 71 and 6r, 7r.
- the tuning is carried out for the purpose of Bruterionkompensation control technology, ie electrically or electronically.
- the left-hand cutting device 4 is supported on the left-hand bearing device 3 and the right-hand cutting device 4 is supported on the right-hand bearing device 3, so that the cutting devices 4 control the transverse movements of the respective associated bearing device 3 and, accordingly, the respective associated deflection means 61, 71 and 6r, 7r join in, so as the two transversely movable telescopic parts of the deflection means 25b are moved synchronously with the left and right deflection 61 to 7r in the transverse direction.
- the transverse movement of the bearing devices 3 and the length adjustment of the deflection means 25b are effected with a left stage 12 and a right stage 12, which are each designed as an electric rotary motor.
- the adjusters 12 each drive a transversely extending spindle.
- the spindles are each in a threaded engagement with two non-rotating linearly guided counterparts.
- One of the counter-members is immovably connected in each case with the associated bearing device 3, so that they are moved in the case of a rotary drive of the respective associated spindle in the transverse direction.
- PB denotes the maximum width of a web P that can be processed in the printing press. If, for the production of a printed product, a web P with a width PB re d reduced in relation to the maximum width PB, which is narrower by the amount of, for example, 6x than the web of maximum width PB, the web P of reduced width PB red is preferably as shown unwound centrally from the roll changer 1 and by means of the the cutters 4 longitudinally cut into the three equal width strands Ti, T 2 and T 3 .
- the funnels 21, 22 and 23 are arranged transversely to the conveying direction F such that, in the case of processing a web P of the maximum width PB, this web is cut into three equal-width sub-strands and these sub-strands are centered on the respective associated funnels 21 without offset. 22 or 23 promoted and longitudinally folded.
- the left sub-strand Tj and the right sub-strand T 3 are offset to the outside by the Sp Sonurgi 2x. After spreading, the outer side edges of the partial strands Ti and T 3 extend by the dimension x within the imaginary outer side edges of a web of the maximum width PB.
- the middle sub-strand T 2 is guided without offset through the web spreading device. He wraps successively the deflection means 25a, 25b and 25c of Bruterionkompen- sators 25a-c, wherein the deflection means 25b is lowered so far in the sub-strand T 2 , that the middle sub-strand T 2 between the inlet guide 2 and the outlet guide. 8 has the same length as the two outer sub-strands T 1 and T 3 .
- FIG. 3 shows the web length compensator 25a-c.
- the outer sub-strands T 1 and T 3 are not affected by the Bruinnkompensator 25a-c. Shown is an example case in which the processed web P has a width of 3X and is longitudinally cut into the three sub-strands Tj, T 2 and T 3 , each having the width X.
- the two outer partial strands Ti and T 3 are offset by a certain Sp Dahl fixture, for example, each 2x, to the outside.
- the length-adjustable deflection means 25b has a variable axial length Y, which is infinitely variable according to the width X of the central sub-string T 2 .
- the length Y can correspond exactly to the strand width X or have a certain oversize, but that is smaller than the Sp Schwarzstructure to each axial side, so that the deflection 25b can be lowered into the middle sub strands T 2 without the two outer strands Ti and T 3 to touch.
- Figure 4 shows the spreading operation in a schematic representation in a plan view of the web P and the sub strands Ti, T 2 and T 3 perpendicular to the conveying direction F at the inlet and outlet of the web spreading device. Shown are the two end positions, between which the left and right bearing means 3 and, accordingly, the two cutting devices 4 and the deflection means 61, 71 and 6r, 7r can be moved back and forth in the transverse direction.
- the maximum adjustment path is designated by x.
- the example case of the processing of a web P of the minimum web width PB-6x, which is also assumed in FIG. 2, is shown.
- the storage devices 3 accordingly each assume their inner end position in which they have the smallest distance measured in the transverse direction from one another. From this inner end position, they can be adjusted for the processing of wider webs P up to the maximum web width PB to the outside, preferably continuously.
- FIG. 5 shows, in a schematic illustration of a web P and sub-strands T 12 , Ti, T 2 and T 3 formed therefrom, a spreading example for a web spreading device of a second exemplary embodiment.
- the web P is cut longitudinally in a first cutting operation by means of a non-movably mounted cutting device 4 only in two sub-strands, namely the partial strands Ti 2 and T 3 .
- the sub-strand Tj 2 is twice as wide as the sub-strand T 3 .
- the sub-string Tj 2 is not shown, left in the plan view of Figure 5 deflection mittein left and the sub-strand T 3 is not shown, right in plan view deflection to the right.
- the right deflection means of the modified web spreading device may correspond to the right deflection means 5r, 6r and 7r of the first embodiment.
- the left deflection means are obtained by straight extension of the left deflection means 51, 61 and 71 of the web spreading device of the first embodiment.
- the modified deflection means differ from the deflection means of the first embodiment only by their axial length, which corresponds to twice the length of the deflection means 51, 61 and 71.
- the sub-strand Ti 2 is offset by such a Sp Drown tenu that it continues to run centered on the two funnels 21 and 22.
- the imaginary parallel to the conveying direction F center line of the sub-strand Ti 2 runs centrally between the hoppers 21 and 22.
- the sub-strand T 12 is cut by means of a downstream in the conveying direction F further fixed cutter 4 in the two sub-strands Ti and T 2 .
- the sub-strands Ti and T 2 are each spread apart by a deflection device, ie each offset away from each other parallel, so that the sub-strand Tj centered on the hopper 21 and the sub-strand T 2 is centrally conveyed to the hopper 22.
- the diverters for the partial strands Ti and T 2 may be designed as known from conventional web spreading devices. A preferred example of such a spreading device is described in DE 103 37 248 A1.
- deflection devices for the partial strands Ti and T 2 can be arranged separately from the upstream cutter 4 and the two upstream deflectors for the partial strands T 12 and T 3 or combined into a compact web spreader in a common frame.
- the downstream cutting device 4 and the associated deflection devices for the partial strands T 1 and T 2 can even be arranged downstream of the printing unit or the multiple printing units for the partial strands T 1 and T 2 .
- FIG. 6 shows examples of different spreading operations that can be carried out with the web spreading device of the first exemplary embodiment.
- Example I corresponds to the spreading operation explained with reference to FIGS. 1 to 4.
- the web P is cut only by means of the left cutting device 4, so that the left sub-strand T 1 and a wider right sub-strand arise, which is designated in Figure 6 with T 2 + T 3 .
- the sub-strand T 1 is spread by means of the deflection 51, 61, 71, and the right sub-strand T 2 + T 3 is promoted without intervention with the right deflection 5r, 6r, 7r and accordingly without offset by the Brusp Drschvorraum.
- the sub-strand T 2 + T 3 is brought to the same length as the sub-strand T 1 by means of the web length compensator 25a-c within the web spreading device.
- the deflecting means 25b is in preferred embodiments therefore extendable to the right side edge of the non-spread partial strand T 2 + T 3 , ie the right telescopic part has an extendable length which corresponds at least substantially to the length of the central part of the deflection means 25b.
- the same spreading operation is shown in mirror image form in Example III, with a right sub-strand T 3 and a double-width left sub-strand T 1 + T 2 being produced by means of only the right-hand cutting device 4.
- the explanations for Example II apply mutatis mutandis to the example III to the other side of the Brusp Schwarzvorraum out. Examples II and III demonstrate the flexibility of the spreader.
- Examples IV and V show spreading operations for 4/6-width sheets P which are unwound asymmetrically to the axial center of the roll exchanger 1.
- the settlement is such that after the section of the right in Example IV sub-strand T 2 and left in Example 5 left strand T 2 without offset centrally through the Brusp Schwarzvorraum and either the left sub-strand Ti in Example IV or the right sub-strand T 3 in the example V is offset to the left or to the right outside. Accordingly, in the example IV, the right-hand deflection device 5r, 6r, 7r and in the example V the left-hand deflection device 51, 61, 71 are not used.
- Example VI a web P is processed according to Example IV, while in Example VII, a web is processed according to Example V.
- both partial strands are offset.
- the right sub-string T 3 as described for the first embodiment is spread to the right outside.
- the left bearing device 3 is adjusted correspondingly far to the right, in particular with the left-hand deflecting device 51, 61, 71.
- the web P is longitudinally cut with one of the cutting devices 4, while the other cutting device 4 is disengaged, and spread by means of the left-hand deflecting device 51, 61, 71 as shown.
- Example VII corresponds in mirror image to example VI, with the right-hand bearing device 3, in particular the right-hand deflection device 5r, 6r, 7r, being adjusted correspondingly far to the left.
- Such extreme adjustability of the left or right bearing device 3 is an optional feature of the web spreading device.
- FIGS. 7 to 9 show a length expansion compensator 26 with a guide device 27 upstream in the web path.
- the length expansion compensator 26 and the guide device 27 preferably used in combination can be arranged in particular between two printing units in the printing tower 20 that print on the partial strands T 1 to T 3 . Preferred features of such a device are described in DE 10 2005 048 246.5.
- FIGS. 10 and 11 show a web spreading device of a third embodiment. As already explained with reference to the first exemplary embodiment, the web spreading device comprises a left and a right bearing device 3, of which only the left bearing device 3 with the components supported by it is shown in the figures.
- the left cutting device 4 and the left deflection means 51, 61 and 71 are cantilevered as in the first embodiment, so that they protrude freely inwards in the direction of the right side of the web spreading device, so have free ends.
- a left carrier is referred to, which is mounted and lowered as in the first exemplary embodiment of the left bearing device 3.
- the carrier 101 and an unrepresented carrier 1Or and in particular the deflection 51, 61 and 71 and 5r, 6r and 7r reference is made to the comments on the first embodiment.
- a Bruterionkompensator 5m, 6m, 7m for the central sub-string T 2 is not arranged in the conveying direction F down from the two outer deflection, but substantially at the same height between the left deflecting 51, 61, 71 and the right Turning device 5r, 6r, 7r.
- the web length compensator 5m, 6m, 7m is not arranged exactly with respect to the conveying direction F at the same height as the two outer deflecting devices.
- the deflection means 5m, 6m and 7m are arranged with respect to the conveying direction F a little offset from the corresponding outer deflection means 51 to 7r.
- each of the deflection means 5m, 6m and 7m may be formed according to the deflection means 25b of the first embodiment as a telescopic part.
- the middle first deflection means 5m is mounted in a manner not shown stationary with respect to the frame G.
- the middle second deflection means 6m and the middle third deflection means 7m are fastened together to a central support 10m, which can be raised and lowered relative to the frame G.
- the deflection 5m, 6m and 7m are not rotatably mounted.
- the lifting and lowering movement of the deflection 6m and 7m is effected by means of a lifting and lowering mechanism, which is formed in the exemplary embodiment as a rod.
- the mechanism comprises two axes 14, which extend transversely to the conveying direction F parallel to the deflection means 6m and 7m.
- the mechanism further includes linkage arms 15 which operate in the manner of a scissor mechanism.
- the link arms 15 are each pivotally connected at one end to one of the axles 14 and at the other end each pivotally connected in a swivel joint 16 to either the frame G or the carrier 10m.
- the attachment to the frame G can be made for example by not shown openings of the left and the right bearing device 3.
- the link arms 15 are articulated on the one hand with one of the axles 14 and on the other hand either the carrier 10m or the frame G connected so that they each intersect in pairs on one of the axes 14 and form of the respective axis 14, starting two legs of a "V" which are foldable about the respective axis 14 toward and away from each other.
- the lifting and lowering mechanism further comprises an adjuster 12, in the third embodiment also an electric rotary motor, and a coupling member 13, which is also formed in the third embodiment as a spindle.
- the stage 12 is attached to one of the axles 14.
- the coupling member 13 extends transversely to the two axles 14 and couples the two axles 14 to each other by being in mating engagement with each of the axles 14.
- the coupling engagement is designed as a threaded engagement.
- the coupling member 13 is rotationally driven by the adjuster 12, so that the non-rotatable axes 14 in the threaded engagement depending on the direction of rotation of the coupling member 13 are moved away from each other or towards each other.
- the pairs a V-forming linkage arms 15 pivoted away from each other and the carrier 10m with the attached deflecting means and 6m 7m in the partial strand T 2 lowered.
- Such lifting and lowering mechanisms are used, for example, for jack, where there is generally replaced the motorized stage 12 by a hand crank.
- the outlet guide of the second embodiment comprises two rotatably mounted, closely juxtaposed rollers 8 and 9, each extending over the entire width of
- Arrangement is the wrap angle per roll compared with a single roll and reduced the same degree of indirection.
- the spread partial strands Ti and T 3 and the aligned with respect to its web length web strand T 2 wrap around the outlet guide 8, 9 and are then conveyed via the biasing unit 19 in the printing tower 20, as will be described with reference to the first embodiment.
- the web spreading device of the third embodiment is very compact, which is primarily due to the arrangement of the Komposensators 5m, 6m, 7m between the two outer deflectors 51 to 7r.
- the second and third deflection means 61, 71, 6m, 7m, 6r and 7r are arranged lowerable from the same side in the respective sub-strand and also that the sub-strands T 1 to T 3 by means of the outlet Guide 8, 9 are guided back towards the cutting device 4, in the embodiment parallel to the incoming path P. They are before, at or even behind the cutting device 4 deflected in the illustration of Figure 10 upwards and then on to the biasing unit 19 promoted.
- FIG. 11 shows the web spreading device of the third embodiment in a state in which the web P can still be conveyed uncut through the web spreading device. All carriers 101, 10m and 1Or are raised to an end position so far that the left deflection means 51 and 61, the right deflection means 5r and 6r and the deflection means 6m and 7m of the web length compensator do not touch the web P. However, the left-hand storage facility 3 and the right-hand storage facility 3 already assume a position matched to the width of the path P in relation to the transverse direction. In this state of the web spreading device, the web P is drawn.
- the web P When drawing in, the web P is guided by the roll changer 1 via the inlet guide 2 and from there by the cut-off cutting rollers of the cutting devices 4 on the first deflection 5, in the first embodiment, the deflection 51 and 5r and in the second embodiment to the deflection 51, 5m and 5r.
- the beginning of the web is guided by the first deflection means 5 straight and uninfluenced by the liftable and lowerable deflecting means to the outlet guide, in the first embodiment, the single outlet roller 8 and in the second embodiment, the pair of outlet rollers 8 and 9, and the respective outlet guide 8 or 8, 9 wrapped around the biasing unit 19, automatically retracted by the printing tower 20 to a turning bar area, not shown. After being pulled in to the turning bar area, the web P is moved along at low speed. cut.
- the sub-strands T1, T2 and T3 have reached the turning bar area, they are further drawn in to the folder or multiple folders of the printing press.
- the printing press comprises a plurality of roll changers 1, web spreading devices and printing towers 20 according to the invention. The further webs P are drawn in accordingly. After all the webs are fed for a given print production, the webs are accelerated to the speed of the production run. In the acceleration phase, the printing process is started.
- the paper web P is completely spread in the spreader 2-fold autopaster.
- the paper web P is clamped in the correct position in the autopaster.
- the paper web is cut twice in the spreading device: once between AB and CD and once between see CD and EF.
- the cut is to be reset according to the spreading dimension (x).
- the knife 4 is moved / offset by at least x. If several spread dimensions are to be realized, this is solved by motor (maintain automation degree).
- the complicating factor is that the two blades 4 each have to move away from each other, resp. to move on.
- the middle strand T2 is just continued, the two outer strands Tl and T3 are guided by inclined deflection means 51, 61 and 5r, 6r, which, for example, as a deflection 03864
- Rods are formed.
- an expansion dimension x is achieved.
- the deflection means 51, 61 and 5r, 6r and per left and right group depending on a further deflection means 71 and 7r are cantilevered. It should be noted that the ends of these deflection means are located exactly on the cutting edge, since the three, not yet spread strands Tj, T 2 and T 3 are directly next to each other. At the beginning of the spreading process, the complete width of each strand is guided individually. The deflecting means and the respectively associated carriage 3 are each adjusted together with the knife 4 depending on the spread dimension x. If several spread dimensions are to be realized, this is solved by motor.
- the caused by the spread length difference between the outer strands Ti, T 3 and the middle strand T 2 is compensated.
- corresponding guide elements are provided on the spreading slide in the spreading device, which additionally deflect the strand T 2 .
- a separate carriage for the middle strand T 2 is provided.
- Path length difference can be compensated only with slow retraction (loss of time), 2. web tension is correspondingly different in this time.
- the main hopper is the middle hopper (web tension distribution) • complete spreading directly at the autopaster ⁇ "processing" of the paper web in one place (simplified control, since control is attached to the autopaster)
- the spreading device is fixed to a single spread. This makes a motor displacement of the blade and the deflection bars and the spreading slide (sideways) superfluous.
- the construction is similar to that of the 4/2 spreader.
- Deviating from variant 1 only one strand is cut off from the paper web and spread in the spreading device.
- the second spread is realized by the turning bars.
- the knife in this variant of the spreading is displaceable x according to Sp Drursmass. Simplifying to variant 1 is that only one knife has to be moved.
- the deflecting rods in turn end at the intersection. Both expansion slides are laterally displaceable (see description of variant 1).
- the deflection rods are asymmetrical and designed at different angles so that no track length difference occurs.
- the required length of the deflection rods for the wider strand may be more than 1500mm. This presupposes a corresponding enlargement of the constructive dimensions.
- the guides are preferably amplified (enlarged) because of the force effects.
- the double-width strand is shifted by twice the spreading dimension.
- the narrow strand is guided symmetrically as in variant 1 through the printing unit.
- the double-wide strand is carried out offset accordingly. After the printing of the double wide strand cut in the middle and spread with the turning bars by turning and sweeping.
- the minimum expansion of the turning bar is 55 mm for structural reasons.
- the orbit EF is being made through the turning bars, AB and CD are being turned around.
- the main hopper will therefore be that of the web EF.
- the spreading is also limited to 6/2 on 4 pages.
- a spreading device designed for 4/2 is mounted either on AB-CD or on CD-EF.
- the knife is located fixed on the edge between B and C or between D and E.
- the spreading is carried out as known.
- a paper web of maximum width PB is not spread. This paper web is also not guided by the spreading device, which means that the web feeder differs from Sp Dahl purity and non-spreader production.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10165313A EP2226281A1 (de) | 2006-05-02 | 2007-05-02 | Vorrichtung und Verfahren zum Spreizen von Bahnsträngen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202006006943 | 2006-05-02 | ||
PCT/EP2007/003864 WO2007124951A1 (de) | 2006-05-02 | 2007-05-02 | Vorrichtung zum spreizen von bahnsträngen |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP10165313.7 Division-Into | 2010-06-08 |
Publications (2)
Publication Number | Publication Date |
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EP2013127A1 true EP2013127A1 (de) | 2009-01-14 |
EP2013127B1 EP2013127B1 (de) | 2012-07-11 |
Family
ID=38420650
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10165313A Withdrawn EP2226281A1 (de) | 2006-05-02 | 2007-05-02 | Vorrichtung und Verfahren zum Spreizen von Bahnsträngen |
EP07724790A Not-in-force EP2013127B1 (de) | 2006-05-02 | 2007-05-02 | Vorrichtung zum spreizen von bahnsträngen |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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EP10165313A Withdrawn EP2226281A1 (de) | 2006-05-02 | 2007-05-02 | Vorrichtung und Verfahren zum Spreizen von Bahnsträngen |
Country Status (2)
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EP (2) | EP2226281A1 (de) |
WO (1) | WO2007124951A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102008005392A1 (de) * | 2008-01-21 | 2009-07-30 | Manroland Ag | Bahnspreizeinrichtung für eine Rotationsdruckmaschine und damit ausgerüstete Rotationsdruckmaschine |
EP2208616A1 (de) * | 2009-01-14 | 2010-07-21 | WIFAG Maschinenfabrik AG | Vorrichtung und Verfahren zum Spreizen von Bahnen im Rollenrotationsdruck |
DE102009044473A1 (de) * | 2009-10-05 | 2011-04-07 | Krones Ag | Einrichtung zum Führen einer variablen Anzahl von Teilbahnen einer Endlosfolie und Verfahren zum Wechseln einer ersten Anzahl auf eine zweite Anzahl geführter Teilbahnen |
DE212021000018U1 (de) * | 2021-03-02 | 2021-05-11 | Suzhou Kangfu Intelligent Technology Co., Ltd. | Eine Stoffbügelvorrichtung zur Bekleidungsherstellung |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8717253U1 (de) * | 1987-01-15 | 1988-06-23 | Benz & Hilgers GmbH, 40470 Düsseldorf | Vorrichtung zum Umlenken und seitlichen Auslenken verschiedener, aus einer Materialbahn, beispielsweise einer Papierbahn, durch Längsschnitt erzeugter Streifen |
DE19823255C2 (de) * | 1998-05-26 | 2001-05-23 | Munditia Textilvertrieb Gmbh | Verfahren und Vorrichtung zur breitenvariablen mehrbahnigen Fertigung von veredelter Bahnenware |
US6092761A (en) * | 1998-07-29 | 2000-07-25 | Clopay Plastic Products Company, Inc. | In-line web separator |
DE10023169A1 (de) | 2000-05-11 | 2001-11-15 | Roland Man Druckmasch | Doppeltwirkende Spreizeinrichtung zur Spreizung einer Bahn |
DE10234674B4 (de) * | 2002-07-30 | 2010-04-29 | Wifag Maschinenfabrik Ag | Bahnspreizvorrichtung |
DE10337248B4 (de) | 2003-08-13 | 2009-12-17 | Maschinenfabrik Wifag | Bahnspreizverfahren und Bahnspreizvorrichtung |
DE102005048246B4 (de) * | 2005-10-07 | 2009-09-10 | Maschinenfabrik Wifag | Rotationsdruckmaschine mit Längendehnungs-Kompensator und Verfahren zum Bedrucken einer längsgeschnittenen Bahn |
-
2007
- 2007-05-02 EP EP10165313A patent/EP2226281A1/de not_active Withdrawn
- 2007-05-02 WO PCT/EP2007/003864 patent/WO2007124951A1/de active Application Filing
- 2007-05-02 EP EP07724790A patent/EP2013127B1/de not_active Not-in-force
Non-Patent Citations (1)
Title |
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See references of WO2007124951A1 * |
Also Published As
Publication number | Publication date |
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EP2226281A1 (de) | 2010-09-08 |
WO2007124951A1 (de) | 2007-11-08 |
EP2013127B1 (de) | 2012-07-11 |
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