The present invention is directed to a printing unit and to a web-fed rotary printing press. The printing unit has at least two pairs of two cylinders each.
DE 25 28 008 A1 shows a printing press for a direct printing method, and having forme cylinders which can be equipped with six printing plates in the axial direction, and with two printing plates in the circumferential direction, and having counter-pressure cylinders which can be supplied with three printing blankets in the axial direction, and with one printing blanket in the circumferential direction. The printing plates, which are arranged side- by-side, as well as the printing blankets, which are arranged side-by-side, are each arranged offset in the circumferential direction.
DE 25 10 057 A1 also discloses a printing press for the direct printing method. The forme cylinder, which works together with a counter-pressure cylinder, supports six printing plates over its width and two printing plates on its circumference.
A printing group with forme, transfer and counter-pressure cylinders is known from JP 56-021860 A. Each one of the three cylinders is driven by its own drive motor.
A triple-width web-fed rotary printing press, with two formers arranged on two levels, that are located one on top of the other, is known from DE 41 28 797 A1.
A printing press with printing groups of a width of six newspaper pages is known from “Newspapers & Technology”, December 2000. The printing groups are configured as bridge printing groups. The transfer cylinders are covered by rubber blanket sleeves.
WO 01/70608 A1 discloses a turning bar arrangement, in which two turning bars, which are substantially of a partial web width, are displaceably arranged on a support transversely to the direction of the incoming partial web. A register roller is arranged at the respective sides outside of the lateral frames. Its longitudinal axis extends substantially parallel with the lateral frame. It can also be displaced along a rail in a direction transverse to the direction of the incoming partial web.
A folding assembly is known from U.S. Pat. No. 4,671,501. Two formers are arranged above one another wherein, after passing over lead rollers, webs are linearly cut ahead of a third former, the partial webs are turned by 90° via a third former, and are subsequently combined into two strands and are conducted to the two formers which are arranged above one another.
A folding assembly with two groups of formers, which are offset with respect to each other, is known from EP 1 072 551 A2. A harp, i.e. a group of collection, receiving or harp rollers, is arranged above each of the groups of formers, over which the respective partial webs are conducted to the assigned groups of formers.
A folding assembly is known from WO 97/17200 A2. Cut partial webs, which are offset transversely with respect to each other, are conducted to various formers. The formers, that are arranged horizontally side-by-side, are also partially arranged vertically offset with respect to each other.
DE 44 19 217 A1 shows a superstructure of a web-fed rotary printing press with a turning device. Partial webs are offset by one-half of a partial web width in order to conduct them on top of each other and to a common former.
A six newspaper pages wide bridge printing group and a three-cylinder printing group are disclosed in DE 100 16 409 A1. The covering of the transfer cylinder with rubber blankets is alternating. The opening in the area of the shell surface has a width of, for example, between 1 and 3 mm in the circumferential direction.
DE 198 03 809 A1 D1 discloses a printing group for four pages in newspaper format or for more, for example six or eight printed pages, located side-by-side, in book format.
DE 101 20 134 A1 discloses, printing forme sections positioned side-by-side and in section a segment, independent from the other segment, for use in pressing on or holding a dressing.
The object of the present invention is directed to providing a printing unit and to providing a web-fed rotary printing press.
In accordance with the present invention, this object is attained by the provision of a printing unit having at least two pairs of two cylinders each. Each pair includes a transfer cylinder and a forme cylinder. Both the transfer cylinder and the forme cylinder have a width sufficient to print six newspaper pages arranged axially side-by-side. A web-fed rotary printing press can have two of these printing units, with each such printing unit having four cylinder pairs. Each such cylinder pair consists of a transfer cylinder and a forme cylinder. The two printing units are each embodied as satellite printing units.
The advantages to be gained by the present invention rest, in particular, in that a simple, cost-effective and space-saving construction, together with the provision of a high variability of the product or intermediate product, is made possible.
Advantages also lie, in particular, in that, in comparison to double-width printing presses, the production dependability is considerably increased with the same target size of a product. Also, when retaining the number of printing units, the yield of the printing press, or of each printing group, can be increased by 50%.
The number of roll changers, and their associated investment costs, the frequency of roll changes and the resultant loss of production dependability, as well as the set-up time when drawing in webs and the increase in cycle times, can all be reduced for the same production size in comparison with a double-width printing press.
In an advantageous embodiment, the printing units are structured as nine-cylinder satellite printing units, which results in high precision of the ink register, and otherwise in a low-oscillation construction. Oscillations are also reduced by the advantageous arrangement, structure and fastening of dressings on the cylinders. For one, openings on the shell surface in the circumferential direction are minimized. It is furthermore also possible to arrange the openings, at least on the transfer cylinder, alternatingly offset in the circumferential direction, in such a way, that a closed shell surface always works together with the forme or satellite cylinder, at least over the length of a section of the forme or satellite cylinder. Thirdly, out-of-roundness and production costs are minimized because, although channels which are axially dispersed on the barrel over its entire effective length are provided, openings in the direction toward the shell surface only exist in the mentioned sections. Devices for fastening of dressing ends and/or fillers are selectively inserted into the channels.
At least six devices for the axial positioning of printing formes are arranged in the channel or channels of the forme cylinders. These devices are embodied, for example, as register pins that are positively acting together with the printing forme ends, which are arranged inside the channel and which can be axially movable manually or by remote control.
For equipping the forme cylinders with printing formes which can be reproduced with exact registration and color congruence, the configuration of the printing groups with associated pressing devices is advantageous. Because of these, it is possible to fix dressings, resting on the shell surface of the cylinders, in place by use of respectively at least one pressing element, as needed, while one end of a dressing or of several dressings is or are released for being removed or attached.
The drive mechanism of the satellite cylinder, or cylinders, which is mechanically independent of the pairs of cylinders, offers particular advantages, with respect to a possibility of a variable operation. Thus it is possible, for example, to perform a set-up operation during production, for example a flying printing forme change, or a forme washing. On the other hand, a web can be drawn in while other cylinders, or other pairs of cylinders, are stopped or are being cycled through a set-up program. If rubber blankets, with positively or negatively conveying properties, are present, it is also advantageous to operate the satellite cylinder with a surface speed which differs from that of the remaining cylinders.
In an advantageous embodiment of the present invention, a superstructure of the printing press has at least one longitudinal cutting device with at least five cutters, which cutters are spaced apart from each other transversely to the paper conveying direction. In an advantageous embodiment, two register elements, which can be moved transversely, with respect to the paper conveying direction, are provided for each printing tower, or respectively for each eight print positions, for compensating for the paths of the partial webs. In a further development, these register elements can be structurally connected with respective turning devices, each of the width of a partial web. Also, subsequent guide elements, which are only assigned to partial webs, are, for example, substantially embodied to have only a partial web width. These configurations make possible a low-oscillation, and therefore also an exactly matching conveyance of the web. Fluctuations in the web tension, occurring, for example during load changes, or during a change of the printing speed, and caused by the inertia of long, thick guide elements only driven by the partial web or webs, can be effectively-reduced.
With a view to dependable operation and to a cost-saving construction, it is also advantageous to provide the possibility of turning a partial web by an odd-numbered multiple of half a partial web in the superstructure. With this, the draw-in and imprinting of partial webs of half a former width, for example a newspaper page can be omitted.
In connection with the reduction of costs and for providing a space-saving construction, it is advantageous, in one embodiment, to place a so-called harp, i.e. a plurality of lead rollers which, as a rule, are not driven, ahead of only one of two formers, which are themselves arranged above one another. Webs can be transported from the harp to the other former. Strands of variable sizes or numbers of partial webs of the same alignment can be supplied to the two formers which are arranged vertically above one another.
In one preferred embodiment, partial webs from one harp assigned to the one group of formers can be supplied to the other group of formers, and vice versa. In an advantageous embodiment, a so-called harp, i.e. a plurality of lead rollers, which are also called collecting or receiving rollers, is to be placed ahead of only one of two formers that are arranged above each other. Webs from the common harp can then be transferred to the other former. Strands of variable size, or numbers of partial webs of the same alignment, can be supplied to the two formers which are arranged vertically above one another.
In an advantageous embodiment of a turning device, the partial web can be displaced, or is displaced, only by an odd-numbered multiple of half a partial web. In this way, it is possible, with little outlay, to avoid, for example, to have to imprint very narrow webs, or to provide additional printing units. The construction of at least one of the turning bars, which at least one bar can be moved transversely in respect to the web, allows a large amount of variability.
The drive mechanism of rollers of the structure of the former and/or of the folding apparatus, which drive mechanism is mechanically independent from the printing units, is advantageous. This is the case particularly in respect to good registration and variable operation.
Preferred embodiments of the present invention are represented in the drawings and will be described in greater detail in what follows.
Shown are in:
A web-fed rotary printing press in accordance with the present invention, and represented, by way of example, in
One superstructure 04 for each section is provided downstream, in the direction of travel of a web 03 which is passing through the printing towers 01, or printing units 02, in this case, superstructure 04 is situated above the printing towers 01, and in which superstructure 04 the web 03, or the webs 03, are cut by longitudinal cutting arrangements 06. The resultant partial webs can possibly be offset and/or cambered, the linear register of the partial webs can be aligned by the use of register arrangements 08, only depicted schematically in
In the printing press shown in
Each printing unit 02 has a plurality, in the preferred embodiment depicted in
In an advantageous embodiment, the inking unit 14 shown in
In a first embodiment, the forme cylinder 16 has a circumference between 850 and 1,000 mm, and in particular between 900 and 940 mm. For example, for receiving two vertical printed pages, for example two newspaper pages in broadsheet format, the circumference is designed with two dressings or covers 19, for example two flexible printing formes 19, which can be fixed in place, one behind the other, in the circumferential direction on the forme cylinder 16. The printing formes 19 can be fixed in place in the circumferential direction on the forme cylinder 16 and, in the configuration represented schematically in
In the first embodiment, the length L16 of the usable barrel of the forme cylinder 16, as shown in
In a second embodiment, the forme cylinder 16 has a circumference, for example, of between 980 and 1,300 mm, and in particular of between 1,000 and 1,200 mm. In this case, the length of the usable barrel is, for example, 1,950 to 2,400 mm, and in particular is between 2,000 and 2,400 mm. The covering corresponds to the above mentioned embodiment.
In the first embodiment, the transfer cylinder 17 also has a circumference of, for example, between 850 and 1,000 mm, and in particular of between 900 and 940 mm. The length L17 of the usable barrel of the transfer cylinder 17 in the first embodiment is, for example, 1,850 to 2,400 mm, and in particular is between 1,900 to 2,300 mm, and it is equipped, in the linear direction, with, for example, three dressings 21, for example rubber blankets 21, shown as sections AB to EF. They substantially extend in the circumferential direction over the entire circumference. Advantageously affecting the oscillating behavior of the printing group during operation, the rubber blankets 21 are arranged alternatingly offset in respect to each other, for example by 180°, as shown in
In the second embodiment, the transfer cylinder 17 has a circumference, for example, between 980 and 1,300 mm, and in particular between 1,000 and 1,200 mm. The length L17 of the usable barrel here is, for example, 1,950 to 2,400 mm, and in particular from 2,000 to 2,400 mm. The covering with dressings 21 corresponds to that of the first embodiment.
In the first above mentioned embodiment, the diameters of the barrels of the cylinders 16, 17 lie, for example, between 270 to 320 mm, and in particular are approximately 285 to 300 mm in diameter. In the second above mentioned embodiment, the diameters of the barrels of the cylinders 16, 17 lie, for example, between approximately 310 to 410 mm, and in particular between 320 and approximately 380 mm. The ratio of the lengths of the usable barrels of the cylinders 16, 17 to their diameters should be 5.8 to 8.8, for example between 6.3 to 8.0, and in a wide embodiment, in particular between 6.5 to 8.0.
The width or length of the barrel is here understood to be that length L16, L17 of the usable barrel which is suited for receiving dressings, covers or blankets 19, 21. This barrel width also approximately corresponds to a maximally possible web width of a web 03 to be imprinted. In relation to the total length of the barrels of the cylinders 16, 17 it would be necessary here to add to this length L16, L17 of the usable barrel the width of possibly existing cylinder bearing rings, of possibly existing channels and of possibly existing shell surface areas which must be accessible, for example, for operating bracing and/or clamping devices.
In an advantageous embodiment, the satellite or counter-pressure cylinder 18 also substantially has the above-mentioned dimensions and ratios of at least the associated transfer cylinder 17.
As schematically represented in
In principle, the beveled edges 24, 26 of the dressing 19, 21 can now be inserted into a slit-shaped opening, which extends axis-parallel, and in the longitudinal direction, on the circumference of the respective cylinder 16, 17. The ends 24, 26 of the dressing 19, 21 are maintained in place by their shape, by friction or by deformation, for example. However, the dressing ends 24, 26 can also be basically fixed in place by application of a spring force, by pressure devices, or by a centrifugal force which is effective during the press operation. In an advantageous embodiment, the slit-shaped openings for printing plates 19, arranged side-by-side in the axial direction on the forme cylinder 16, are each arranged in alignment, for example are each arranged in the form of a continuous slit-shaped opening, as will be described subsequently, while the openings for the rubber blankets 21, which are arranged side-by- side on the transfer cylinder 17, are not continuously offset, but instead are arranged in alternation with each other by 180° in the circumferential direction. In a perspective view, as shown in
The beveled edges 24, 26 of the printing forme 19 can now each be inserted into one of the openings 28, which are axis-parallel in the longitudinal direction on the circumference, and can be fixed in place, or at least the trailing end 26 can be fixed in place, by the use of a holding device 29, 31 which is arranged in the channel 27.
Here, the holding device 29, 31 has at least one clamping element 29 and a spring element 31, as seen in
In an advantageous embodiment, not only one clamping element 29 is arranged in each channel 27. Several clamping elements 29 are arranged axially side-by-side in the form of segments, each with at least one spring element 31, over the length of the sections A to Fig., and which are represented “pulled out of” the cylinder 16 in
In the embodiment represented in
In a perspective view, shown in
The two channels 36, 37, which are arranged underneath a shell surface 40, and thus in the interior of the cylinder 17, are embodied, for example, as circular bores, have a total, for example three, narrow, slit-shaped openings 38, 39, 41 facing toward the shell surface 40 of the cylinder 17, as shown in
Now the beveled edges 24, 26 of the rubber blanket 21 can each be inserted into one of the openings 38, 39, 41, respectively and extending axis-parallel at the circumference, and can be, at least for the trailing end 26, fixed in place by respectively at least one holding device 43, 44 which is arranged in the channel 36, 37. Preferably the two ends 24, 26 of the same rubber blanket 21 are introduced through the same opening 38, 39, 41 into the same channel 36, 37.
Here, the holding device 43, 44 has at least one clamping element 43 and one spring element 44, as seen in
In an advantageous embodiment, not only is one clamping element 43 arranged in each channel 36, 37, but several clamping elements 43 are arranged axially side-by-side in the form of individual segments, each with at least one spring element 44, over the length of the sections AB, CD, EF, which are represented “pulled out of” the cylinder 17 in
In the embodiment represented in
In accordance with
In a different embodiment of the channels 36, 37, these can be embodied so they do not continuously extend over the entire length. For example, respectively one channel 36, 37, if required, with an appropriate holding device, is provided in the area of each cylinder section AB, CD, EF, wherein the channel 37 of the center dressing 21 is offset by 180° in respect to the two outer ones. This is depicted, only schematically, in
In an embodiment which is particularly advantageous in connection with the printing units 02, or in connection with cylinders 16, 17 of a width of six pages, a device 52 for pushing a dressing 19, 21 against a cylinder 16, 17, and in particular for pushing a printing forme 19 against the forme cylinder 16 of at least one of the printing towers 01, is assigned to at least two cylinders 16, 17, in particular two forme cylinders 16. This device 52 is referred to as a pressing device 52 in what follows. For example, use of this pressing device 52 is advantageous if it is intended to perform a rapid, for example a flying plate change, in two corresponding printing groups 13. It is advantageous, in particular, for a rapid, dependable and exact product change if such a pressing device 52 is assigned to all of the forme cylinders 16 of a printing tower 01. An appropriate pressing device 52 in accordance with the present invention has one or several pressing elements 53, 54, for example strips, plungers or roller elements 53, 54, which can be selectively placed against one or against several dressings 19, 21. This makes possible a controlled and guided draw-on, or tensioning or a controlled releasing or removing of the dressing 19, 21. It is also possible, by use of this pressing device 52, to move one end 24, 26 of the dressing 19, 21 into the corresponding channel 27, 36, 37, or into the opening 28, 38, 39, 41, or to keep down a released end 24, 26, or the partially released dressing 19, 21 in a desired position. The pressing device 52 extends along the cylinder 16, 17 at least in the entire area of the sections A to F, i.e. in the area of the barrel of the cylinder 16, 17 which is effective for printing.
The embodiment of the pressing device 52 depicted in
For each section A to F, in the case of six dressings 19 arranged side-by-side, or for each section AB, CD, EF, in case of three dressings 21 arranged side-by-side, the pressing device 52 has at least one first pressing element 53, for example one first pressing roller element 53. In an advantageous embodiment, in accordance with
The roller elements 53, 54, which are arranged axially side-by-side, as well as the roller elements 53, 54 which are arranged one behind the other in the circumferential direction, if both roller elements 53, 54 are provided, are, in principle, arranged, to be movable independently of each other, for example, on a cross arm 56, or on several cross arms 56. The sole first roller element 53, or the group of first roller elements 53 of each section A to F, or AB to EF, as well as the sole second roller element 54, or the group of second roller elements 54, if provided, of each section A to F, or AB to EF, can be actuated independently of each other by their respective own actuating devices 57, 58. These actuating devices 57, 88 are embodied as reversibly deformable hollow bodies 57, 58 which can be actuated by a pressure medium, and in particular are embodied as hoses 57, 58. However, it is also possible to provide differently configured, such as electrically or magnetically actuable actuating devices. For stretching a dressing 16, 17 on one of the sections A to F, or AB to EF, the leading end 24 of the dressing, which leading end of the dressing 16, 17 is beveled at an acute angle, is inserted into the appropriate opening 28, 38, 39, 41. The first roller element, or elements assigned to this section A to F, or AB to EF, as well as, if provided, the second roller element, or elements assigned to this section A to F, or AB to EF, are placed against the cylinder 16, 17, or the against already suspended dressing 19, 21 to be drawn on. If one or if several dressings 19, 21 have already been arranged on the cylinder 16, 17 and are to remain there, the first and/or the second roller elements 53, 54 assigned to this section A to F, or AB to EF, are also placed against the respective dressing 19, 21. If first and second roller elements 53, 54 are provided, in the course of the cylinder 16, 17 with the roller elements 53, 54 rolling off against each other, the second roller element 54 pushes the trailing beveled end 26 of the dressing 19, 21 into the opening 28, 38, 39, 41 when rolling across it. If only first roller elements 53 are provided, these perform the inserting pressure. In the course of this procedure, the roller elements 53, 54 remain stationary, while the cylinder 16, 17 is rotated in a production direction P, as seen in
When releasing a dressing 19, 21, it is necessary to ascertain whether one or several dressings 19, 21 should remain on the cylinder 16, 17. In this case, initially at least one of the roller elements 53, 54, which is assigned to the remaining dressing 19, 21, should be placed or is placed against this remaining dressing in the area of its trailing end 26, or close to the opening 28, 38, 39, 41. The roller element 53, 54 assigned to the dressing 19, 21 to be released can remain in place or is pulled back. The holding element for the sections A to F, or AB to EF is opened. The trailing end 26 of the dressing 19, 21 to be released will be released or removed from the channel 27, 36, 37 by its inherent tension, while the dressings 19, 21 which are to remain are held down by the roller elements 53, 54. The holding element is then closed again. If the pressing device 52 has first and second roller elements 53, 54 respectively, the dressings 19, 21 which are to remain in place are advantageously held down by at least the second roller elements 54. In connection with the dressing 19, 21 to be removed, at least the second roller element 54 is initially pulled back, so that the trailing end 26 can leave the channel 27, 36, 37, and the first roller element 53 is placed against it, so that the already partially released dressing 19, 21 is still guided and maintained on the cylinder 16, 17.
Thereafter, the cylinder 16, 17 can be rotated, preferably opposite to the production direction P, until the leading end 24 can be removed from the channel 27, 36, 37 and the dressing 19, 21 can be removed. If, in the course of unclamping the dressing 19, 21, no remaining dressings 19, 21 need to be considered, the roller elements 53, 54 relating to the dressing 19, 21 pertaining to the sections A to F, or AB to EF can, in principle, assume any arbitrary operating position during the procedure, and are preferably pulled away.
It is thus possible to fix dressings 19, 21, placed on the shell surface 30, 40 of the cylinder 16, 17, in place, as needed, by respectively at least one pressing element 53, 54, while an end 24, 26 of a dressing 19, 21, or several dressings 19, 21, is, or are released, i.e. is or are not pressed on.
In an advantageous embodiment, cylinders 16, 17, 18 of the printing unit 02 are driven in such a way that the printing groups 13 of the printing unit 02 can each be rotatably driven by a drive motor 61, as seen in
All nine cylinders 16, 17, 18 in
In contrast to
In contrast to
In contrast to the embodiment indicated by dotted lines in FIGS. 8 or 9 without the individual rotatory driving of the inking and/or of the dampening system 14, 20, it is however advantageous, in a further development, to transfer power from the transfer cylinder 17 to the inking and/or to the dampening system 14, 20. It is thus possible to achieve an unequivocal moment flow and to possibly prevent otherwise occurring tooth profile changes. An embodiment of such a drive train is schematically represented in
The drive motor 61 drives a drive wheel 72, via a pinion 71, and a drive wheel 73 which is torsionally rigidly connected with the transfer cylinder 17. The drive wheel 73 is either embodied wider than drive wheel 72, or a second drive wheel 74 is connected with the transfer cylinder 17. The widened or additional drive wheel 73, 74 drives a drive wheel 78 of the inking and/or dampening system 14, 20 via a drive wheel 77, which drive wheel 77 is rotatably arranged on a journal 76 of the forme cylinder 16. The drive wheels 72, 73, 74, 77, 78 are preferably embodied as gear wheels. For the case wherein the forme cylinder 16 is embodied to change its location by, for example, ±Delta L, for adjusting its axial position, at least the pinion gear 71, as well as the drive wheels 72 to 74 are embodied with spur gear toothing. An encapsulated attached gear 62′, which is indicated by dashed lines in
The above-described embodiments of the printing unit 02, or of the printing groups 13, or of their cylinders 16, 17, 18, or of the drive mechanism, allow low-oscillation, exactly color congruent printing of high quality with a small technical and spatial outlay, in regard to the attainable product size.
After the web 03 of, for example, a width of six printed pages has been imprinted, it runs into the area of the superstructure 04, as shown in
A first preferred embodiment of at least a portion of the superstructure 04 is represented in
As is customary, the turning device 07 has two parallel or crossed turning bars 82 as the guide element 82, which two turning bars 82 form an angle of approximately 45°, or of approximately 135° with the conveying direction of the incoming partial web 03a, 03b, 03c, and by the use of which turning bars 82 an incoming web 03a, 03b, 03c can be laterally offset or cambered. Advantageously, the turning bars 82 have a length L82, whose projection on the transverse extension of the incoming partial web 03a, 03b, 03c is slightly greater, for example is 0% to 20% greater, than the width of the incoming partial web 03a, 03b, 03c, i.e. the turning bar length L82 is approximately 1.4 to 1.7 times that of the partial web width. The length L82 has been selected to be at least such, that its projection is less than or equal to twice the width of a partial web 03a, 03b, 03c of a width of two pages, i.e. the length L82 is at most 2.8 times the partial web width. In an advantageous further development, the turning bars 82 are each separately seated on individual supports 83, the location of which supports 83 can be changed transversely to the direction of the incoming partial web 03a, 03b, 03c on at least one guide element 84. The now “short” turning bars 82 can now be brought from the desired web guidance into the required position in accordance with the respective requirements. Possibly both turning bars 82 can be seated on such a support 83.
Offset, turned, transferred and/or cambered partial webs 03a, 03b, 03c as a rule undergo an offset in the running direction in comparison with other partial webs 03a, 03b, 03c, and their linear register is therefore corrected by the use of a register arrangement 08. The register arrangement 08 has as seen in
Besides being cut, turned and possibly registered, the partial web 03a, 03b, 03c is now conducted in the superstructure 04, possibly by the use of further, non-driven guide elements, such as guide rollers, which are not specifically represented, until it finally is conducted to a lead or a harp roller 88 of the so-called harp 09, which is shown in
In an advantageous embodiment, again as seen in
However, instead, of or in addition to a section 88, the “short” harp roller 88, 93 can also be embodied as a separate harp roller 93 arranged, on a frame, as represented in
Since the offset, in the course of turning, offsetting, cambering, or the like, only effects this partial web 03a, 03b, 03c and is tied to its specific web guidance, it is possible, in an advantageous embodiment, to assign the required register arrangement 08 to at least one of the guide elements determining the course of the partial web 03a, 03b, 03c, such as, for example, the turning device 07, or a turning bar 82, or the harp 09, or a “short” harp roller 93.
In
In
In an advantageous further development, two such “short” devices, which can be displaced together with the register and turning arrangement 08, 07, or with the register or harp roller 93, are arranged above or below each other per full web 03 in the superstructure 04 of a triple-wide printing press.
The guide elements 84, 96, as seen in
Various transitions or offsets of partial webs 03a, 03b, 03c over one or two partial web widths, or also over multiples of half a partial web width, are possible by the use of the transversely displaceable turning bar 82. In the course of this, the imprinted partial webs 03a, 03b, 03c are aligned with one of several, here three, formers 101, 102, 103 of the folding structure 11, as seen in
In an advantageous embodiment, the superstructure 04 has at least (n*(m/2−1) turning arrangements 07 for n full webs 03, 03′, for example n printing towers 01, to be imprinted, each with a maximum width b03 of m printed pages. In the case of a printing press of a width of six pages and, for example, three webs 03, 03′, or three printing towers 01, per section, six turning arrangements 07 per sector are advantageous.
In an embodiment of a printing press with, for example, two sections of three printing towers 01 each and a total of six webs 03, 03′, 03″ of a width of four printed pages and intended for four-color imprinting on both sides, at least three turning arrangements 07 per section are arranged.
In an advantageous embodiment of a printing press with, for example, two sections of two printing towers 01 each, and a total of six webs 03, 03′, 03″ of a width of four printed pages and intended for four-color imprinting on both sides, four turning arrangements 07 per section are arranged, for example. A product of a total size of 96 pages can then be produced in collection operation in this printing press with two sections, or a total of four printing towers 01 and with four webs 03, 03′. Besides the offset of a partial web 03a, 03b, 03c by a whole number multiple of its partial web width b03a, a type of operation is advantageous wherein a partial web 03a, 03b, 03c is offset by an odd-numbered multiple of half a partial web width b03a and/or former width i.e. the partial web is offset by a factor of 0.5, 1.5, 2.5 as seen in
The partial web 03a, 03b, 03c, which is offset by an odd-numbered multiple of half a former width b101, or by a partial web width b03a, thus runs “between” the formers 101, 102, 103. This is represented in
The partial web 03a, 03b, 03c, offset by an odd-numbered multiple of half a partial web width b03a, is longitudinally cut upstream of the former 101, 102, 103 in an alignment between the two aligned formers 101, 102, 103 and moves toward the folding structure 11, or the harp 09, i.e. the undivided and/or divided harp roller 89 and/or the “short” harp roller 93 as seen in
A schematic section of
In a further embodiment, the harp rollers 89, 93, in particular if they are embodied as being undivided over their entire length, can be rotatorily driven by their own, non-represented drive motors. The drive motors for these harp rollers are then embodied controllable, for example with respect to their rpm, and possibly with respect to their position, and are connected with the printing press control device, or with an electronic guide shaft, for accepting desired reference variables.
As represented in
In accordance with
Viewed in the running direction of the web, the folding structure 11 has, at least upstream of one of the two groups of formers 101, 102, 103, or 106, 107, 108 which are arranged on top of each other, the harp 09 defining the entry into the former of the webs 03, 03′, or of the partial webs 03a, 03b, 03c, i.e. a group of several parallel lead or harp rollers 89, 93, offset in the radial direction in respect to each other, over which the various webs 03, 03′, or partial webs 03a, 03b, 03c, or 03a′, 03b′, 03c′, are transferred from the superstructure 04 into the folding structure 11. Downstream of the harp rollers 89, 93 these webs or partial webs are combined into a strand 109, 111, 112, or into several strands 109, 111, 112. The future position of each partial web 03a, 03b, 03c, or 03a′, 03b′, 03c′ in the strand 109, 111, 112, or of their printed pages in the intermediate and/or final product, is already fixed in the harp 09, inter alia, by the selection of the relative position of the web or partial web in respect to the other partial webs 03a, 03b, 03c, or 03a′, 03b′, 03c′ passing through the harp 09. The harp rollers 89, 93 of a harp 09 are offset vertically and/or horizontally with respect to each other and are preferably seated as a modular unit in a common frame. Such a harp 09 can be provided, in principle, for each one of the groups of formers 101, 102, 103, or 106, 107, 108 which are vertically offset from each other.
To accomplish a savings in structural height, the two formers 101, 102, 103, or 106, 107, 108, which are arranged on top of each other, but which are aligned with each other in their plane of symmetry, respectively, have a common harp 09 in an advantageous embodiment as represented in
In an embodiment of a section of a printing press with three printing towers 01 and with three webs 03, 03′, 03″ intended for four-color printing on both sides, at least nine harp rollers 88, 89, 93 have been arranged per harp 09. During collection operations, a product of a total size of 72 pages can then be created in this section.
In an advantageous embodiment of a printing press with, for example, two sections, each of respectively three printing towers 01 and with a total of four webs 03, 03′, 03″ of a width of six pages intended for four-color printing on both sides, at least six harp rollers 88, 89, 93 per harp 09 of one section are arranged. These six harp rollers 88, 89, 93 per section, i.e. twelve in this case, can be arranged in two structurally separate harps 09, for example via a common folding structure 11 or two folding structures 11, but also in a structurally common harp 09, for example in two rows. It is then possible to create a product with a total size of 96 pages during collecting operations in this printing press with two sections.
In an advantageous embodiment of a printing press with, for example, two sections each of two printing towers 01 and with a total of four webs 03, 03′, 03″ of a width of six pages intended for four-color printing on both sides, at least six harp rollers 88, 89, 93 per harp 09 of one section are arranged. These six harp rollers 88, 89, 93 per section, i.e. twelve in this case, can be arranged in two structurally separate harps 09, for example via a common folding structure 11 or two folding structures 11, but also in a structurally common harp 09, for example in two rows. It is then possible to create a product with a total size of 96 pages during collecting operations in this printing press with two sections.
If only one folding structure 11 is provided for two sections, the number of required harp rollers 89, 93 must be determined in accordance with the configuration of the two sections. If the folding structure 11 is arranged between these two sections, either all of the harp rollers 89, 93 are arranged in one row or, for saving structural height, the harp rollers 89, 93 of each section are arranged in a row, and the rows are horizontally offset from each other in the radial direction. The harp rollers 89, 93 of the two rows are here arranged again in a common frame, for example.
If, in fact and as indicated in
As may be seen in
In the case of multi-colored products and when using the above-described folding structure 11 with a common harp 09, it is advantageous, with regard to flexibility, to embody all printing units 02 or printing towers 01, or the paths of the web 03, 03′ in the same color. For example, the web 03, 03′ and/or partial web 03a, 03b, 03c etc., of the printing group 13 can be flexibly selected for a colored cover sheet, and the size of the intermediate products is variable.
The above mentioned folding structure 11 with only one harp 09 for two groups of formers 101, 102, 103, or 106, 107, 108, with the two groups arranged on top of each other, is also suitable for other printing presses with different cylinder widths and cylinder circumferences. Such a folding superstructure 11, consisting of two groups of formers 101, 102, 103, and 106, 107, 108 arranged on top of each other and with a common harp 09, can also be arranged above a third former with its own harp 09. The described folding structure 11 with a harp 09 assigned to several formers 101, 102, 103, 106, 107, 108 vertically offset in respect to each other can also be well applied to three formers 101, 102, 103, 106, 107, 108 arranged on top of each other.
Thus, the outer pages, for example of a book, can be assigned to a defined web course and/or to a defined printing tower/printing unit.
By the use of the harp 09 assigned to several formers 101, 102, 103, 106, 107, 108, it is possible to process the partial webs 03a, 03b, 03c, etc. located on top of each other, in a flexible manner, into books of different size, depending on the desired product, without a large outlay for additional, superfluous offsets of partial webs 03a, 03b, 03c, etc. being required. For example, of four partial webs 03a, 03b, 03c, etc. located on top of each other, it is possible, in one case, to conduct three webs to one former, and one web to the other former 101, 102, 103, 106, 107, 108, while at another time, respectively two partial webs 03a, 03b, 03c, etc. are combined and are conducted to a former 101, 102, 103, 106, 107, 108. It is particularly advantageous that strands 109, 111, 112, 113, 114, 116, which lie side-by-side, can be combined in different sizes, as represented in
In an advantageous embodiment, traction rollers 117, and former inlet rollers 118, respectively are arranged upstream of the formers 101, 102, 103, 106, 107, 108 and have their own drive motors 119. The same applies to traction rollers 121, shown in
It is particularly advantageous, for example in a view toward maintaining or setting linear registers, if the folding apparatus 12, as seen in
It is thus possible, in an embodiment of the present invention, to preset an angular position in relation to a virtual electronic guide axis in the printing units 02 and the folding apparatus 12, or their drive motors 61, 120, which are driven mechanically independently of each other. In another embodiment, the angular position of, for example the folding apparatus 12, or of its drive motor 120, is determined, and on the basis of this determination, the relative angular position, with respect to it, of the printing units 02, or of the printing groups 13, is preset. The drive motors 80, 119 of the driven rollers 81, 117, 118 which, for example, are only controlled with respect to their number of revolutions, obtain the presetting of their number of revolutions from the printing press control, for example.
By the embodiment of the web-fed rotary printing press with triple wide and double size transfer and forme cylinders, and the corresponding embodiment of the folding structure it is possible by use of a web, for example in double production, to produce
The number of pages of the intermediate products which are then collected from two longitudinally folded sections are doubled with collection production.
The respective number of pages should be doubled in connection with printing in tabloid format. The dimensioning of the cylinders 16, 17, 18, as well as of the groups of folders 101, 102, 103, 106, 107, 108 should be correspondingly applied to respective “horizontal” printed pages, wherein a section A, B, C has two horizontal printed pages in the circumferential direction, or running direction, of the web 03, 03′, 03a, 03b, 03c, so that the forme cylinder 16 then has a circumference corresponding to four horizontal printed pages in tabloid format, for example. The number of printed pages in the longitudinal direction per web 03, 03′, 03a, 03b, 03c, or cylinder 16, 17, 18, or former width, remains.
While preferred embodiments of a printing unit and of a rotary web-fed printing press, in accordance with the present invention, have been set forth fully and completely hereinabove, it will be apparent to one of skill in the art that various changes in, for example, the type of web being printed, the particular composition of the printing formes and the dressings, and the like could be made without departing from the true spirit and scope of the present invention, which is accordingly to be limited only by the following claims.
Number | Date | Country | Kind |
---|---|---|---|
10149068.2 | Oct 2001 | DE | national |
10149997.3 | Oct 2001 | DE | national |
10202033.7 | Jan 2002 | DE | national |
10228970.0 | Jun 2002 | DE | national |
10228968.9 | Mar 2002 | DE | national |
PCT/DE02/02410 | Jul 2002 | WO | international |
10230316.9 | Jul 2002 | DE | national |
10235391.3 | Aug 2002 | DE | national |
10238177.1 | Aug 2002 | DE | national |
This U.S. patent application is a division of U.S. patent application Ser. No. 10/490,377, filed Apr. 2, 2004. That application was the U.S. national phase of PCT/DE02/03692, filed Sep. 30, 2002 and published as WO 03/031180 A2 on Apr. 17, 2003. The PCT application claims priority to nine prior German and PCT applications, the earliest of which was filed on May 10, 2001 and all of which are listed on the Declaration filed with this application. The disclosures of these various documents are expressly incorporated herein by reference.
Number | Date | Country | |
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Parent | 10490377 | Apr 2004 | US |
Child | 11589105 | Oct 2006 | US |