DE2445908A1 - INKING UNIT AND DENSITY CONTROL DEVICE FOR WEB PROCESSING PRESSES - Google Patents

Description

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September 25, 1974 Gzf / pn

DIDDE-GLASER, INC., 1200-1500 Graphic Arts Road, Emporia,

Kansas, U.S.A.

Inking unit and density control device for web-processing printing presses

The invention relates to dye units for use in High-speed, in-line web-processing printing presses capable of running a moving Accurately color web during changes in web speed without the need for manual adjustment the unit exists. In particular, the invention relates to dyeing units of the class described which have a A plurality of distribution nozzles are used for supplying a coloring liquid to first distribution rollers, the lower one Form the end of corresponding opposite roller trains, and preferably has flexible, plate-like measuring elements in braced, tangential, prestressed engagement with the Distributor rollers on to a variable control of the amount of dye liquid that is ultimately applied to the moving web will allow.

In recent years, the demand for colored backgrounds on printed materials as opposed to increased

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a plain white background. Accordingly, it became necessary for the printer to have a large store of colored papers of different shades to satisfy the most diverse demands of its customers. That alone is because of the tremendous cost associated with such a large warehouse and the need to reorganize the paint warehouse frequently associated costs, less than desirable. Perhaps more important is the fact that colored Bearings are necessarily more expensive than plain white bearings and in some cases the cost can even be prohibitive. Furthermore, the printer always depends on the goodwill of the supplier, which leads to annoyance and possibly costly delays the supplier should not be able to process the order for specific colors, paper types, roll widths, to meet in an appropriate time.

Simultaneously with the increasing demand for colored paper backgrounds is the increasing use of so-called in-line web processing printing presses in the printing industry, which paper supplies in roll form use. Such presses are suitable to continuously feed a paper web through various To allow stations to progress where various processes, such as printing, punching and gluing, are carried out will. When looking at the size and quantity of such rolls, it becomes clear that storage, handling and Cost problems corresponding to the above increase to a great extent. To such a press for a new one To prepare an order that requires a different colored paper than the one previously used, it is necessary to use the arduous steps of removing the old roll, des

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Bringing back to the warehouse, removing the new roll from that Stocking and applying the latter to go through on the printing press. If this procedure several times in one If repeated on a single day of operation, it becomes clear that these problems are even more pronounced.

About the difficulties associated with the use of differently colored webs in in-line web-processing printing presses connected, it has been proposed to arrange a inking unit as a separate station on the printing press itself, which is capable of coloring the paper in any desired shade in a continuous manner. In the In practice, such a unit consists of a large number of inking rollers that are rotatably mounted in upright frames and represent an application gap for the coloring of a paper web moving through it. This unit is Suitable for installation in the conveyor path of the train, in order to continuously dye the same as it passes through the dyeing station is moved.

When using such an in-line inking unit, various problems were encountered which limited the use of the structure in high-speed printing presses. The most important was in the described Färbeinheiten who were just able and uniformly tracks at a Geschwind igke it 'to ^8,150 m / min ^ color to control the color quality when the web speeds exceed these values. Since the in-line printing presses themselves are in many cases able to process webs at speeds of up to approx. 850 m / mift (250 barrels / inm), it is clear that

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adding an in-line staining unit at a high speed would reduce the delivery capacity of the printing press, making it impossible for the latter to use a Work peak efficiency.

Preferably, different web speeds are often used when using in-line printing presses therefore it is necessary that any inking unit used be capable of a given web speed to ensure uniform coloring of the moving web during such changes. Around To achieve this need, the staining devices available heretofore required a variety of manual adjustments the amount of ink inflow in order to adjust the mode of operation as a function of the changing web speeds change. Usually this required continuous monitoring and frequent adjustment of the liquid flow control devices by the operator to ensure uniformity of the web coloring.

There is, therefore, a need in the art for a dyeing unit that can be used in high speed in-line web processing Printing presses can be used which is able to accurately and consistently move at an extremely high speed moving web to color, and which is further able to have a uniform coloration during wide changes to perform the web speed without it being necessary to continuously monitor the device and manually to adjust.

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Accordingly, it was discovered that a trajectory-driven Dyeing unit for use in high-speed web processing Printing presses can be created that is capable of uniformly and accurately one or both sides to dye a moving web at the same time and an automatic compensation of the changing web speed without manual adjustment is necessary. The unit uses two separate, opposite, freely rotating single drum rollers which are rotatably mounted in the entire frame structure and cooperating at the upper end thereof create a gap for the web to pass therebetween. A roller absorbing the coloring liquid forms the lowest roller of each roller train and a plurality of horizontally arranged dye liquid nozzles are arranged adjacent to it, to apply a steady stream of coloring liquid thereon. If a Brought paper web through the gap and at the same time applied a coloring liquid to the adjacent distributor roller the rollers are made to rotate in the corresponding trains, and the coloring liquid is thereon is transferred to the applicator rollers that form the gap and thereby onto the web itself.

In a particularly preferred embodiment there is a bendable, plate-like measuring part made of synthetic resin for a coloring liquid in a braced, tangentially biased arrangement to the corresponding coloring liquid receiving rollers arranged to automatically measure the amount of dye liquid and so the color density, which ultimately applied to the moving web. in the

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special are the bendable measuring parts in tangential, prestressed Engaging with the FarbflUssigkeit receiving rollers arranged between the point where the dyeing liquid from the adjacent nozzles is applied to it, and the gaps created by the take-up rollers and the adjacent rollers in separate trains are formed in the direction of rotation of the aforementioned. The measuring elements are capable of being dependent of the variable hydraulic pressure to automatically output which against it from the accumulated paint liquid is applied to the rotating take-up rollers during the change in web speeds. if As the web speed increases, the hydraulic pressure created by the dyeing liquid on the rotating rises Distributor roller is formed, in a similar manner to thereby raise the bendable measuring members or otherwise bending, thereby allowing greater amounts of coloring liquid to reach the respective application rollers; due to the fact that the web moves between the latter with increasing speed, the one applied remains Dye liquid per meter on the web is essentially constant, thereby providing a uniform web color when leaving the staining unit.

Each separate roller train is preferably in separate rotatably interconnected segments of the overall frame rotatably mounted to selectively open and close the web nips created by the corresponding application rollers are formed, to thereby facilitate the loading of the device. It was also found advantageous use three separate freely rotating reels in each turn,

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namely, a metallic coloring liquid receiving spreader roll as the bottom, a middle transfer roller and one uppermost resilient applicator roll, all of which are in tangential transverse engagement with one another for the transfer of the coloring liquid to the topmost applicator roll while the unit is in operation.

Mechanical devices can be provided to reduce the nip pressures between the engaged rolls in Adjust each of the respective single drum rollers and pneumatically operated connection devices can be provided to optionally open and close the units to facilitate loading.

An embodiment of the invention is shown in the drawing and is described in more detail below.

Show it:

Fig. 1 is a front view of a dyeing unit according to the invention, the pulley trains and the therewith shows associated liquid nozzles and the underlying collecting tray construction;

FIG. 2 shows a view of the dyeing unit from FIG. 1 with various Rollers with part broken away to make the liquid nozzles clearer;

Fig. 3 is a vertical cross-section of the staining unit of Figs. 1 and 2 taken along line 3-3 of Fig. 1; during use in dyeing a moving web of paper;

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Fig. 4 is a partially enlarged view in vertical section partially showing the structure of the dye liquid nozzle, Figure 9 shows the dye liquid take-up roller and flexible measuring device associated therewith;

Fig. 4a is a partial front view of the flexible measuring member, which is suitable in a tensioned, pretensioned Engaging with each of the corresponding coloring liquid supply rollers of the separate roller trains get;

5 is a partial end view showing the far right end of an inking unit shown in FIG with the rollers of the respective roller trains being shown in phantom;

Fig. 6 is a fragmentary view in vertical section taken along line 6-6 of Fig. 5 showing the manual adjustment device for moving the lower pair of rollers in each respective pulley for engagement shows with the application roller;

Fig. 7 is a partial view, partly in section, showing the arrangement of the eccentrically mounted setting rollers shows, i.e. in transverse, tangential engagement with the application roller of each roller train;

Fig. 8 is a partial section along line 8-8 of Fig. 5 showing the fine adjustment mechanism for the Change in the orientation of the lowermost dye-receiving roller in each roller train shows;

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Figure 9 is a partial cross-sectional view taken along line 9-9 of Figure 5 showing the rotatable connection between the separate moving parts of the entire support frame of the dyeing unit;

Fig. IO is a schematic representation of the parts that make up the device for applying the coloring liquid to the first distribution rollers of each separate roller train shows, and

11 is a side view of an in-line web-processing printing press on which an inking unit correspondingly of the invention is attached.

In Figures 1 and 2 there is shown a staining unit, indicated generally by the reference numeral 20, which is suitable to be attached to high-speed web-processing printing presses directly at the head of the first printing station to become continuously a web of paper or other material as it passes through the unit, to color. By and large, the unit 20 comprises a pair of opposed, spaced upwardly extending sections Supports 22 and 24 which are connected to one another by means of a pair of fastened cross members 26. Additionally points the unit 20 includes a plurality of rollers rotatable for free rotation between the supports 22 and 24 therein are stored and form two separate, essentially the same roller trains, which are described in detail below. Adjustment knobs 28, 30, 32, 34, 36 and 38 are for adjusting the relative orientation and engagement of the rollers

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provided on the corresponding trains. Two sets of horizontally arranged liquid nozzles 39 are also in communication
with the separate, underlying suspended floor structure 40 which serves to accommodate any leakage of the coloring liquid from the nozzles 39.

If you look at Fig. 3, you can see that the sub-

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Supports 22 and 24 are the same and each has a first generally L-shaped stationary member 42 and a second rotatably mounted, movable, substantially rectangular member 44. An optional reciprocating rotary movement
of segment 44 is achieved through the use of a pair of pneumatically operated piston and cylinder devices 46 having connecting rods 48 extending therefrom which in turn by means of an annular collar 49 with opposed stationary shafts 50 (see FIG. 2).
which extend from the severed movable segments 44.

Identical pulley blocks 52 and 54 are rotatably mounted between the opposing segments 42 and 44 of the corresponding upright supports 22 and 24. Everyone
The roller train has a lowermost metallic paint liquid receiving distribution roller 56, a middle resilient transfer roller 58 and an upper resilient application roller 60. In addition, there are eccentrically attached, resilient adjustment rollers

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62 for the purpose described in detail below.

As can be seen from Fig. 3, the corresponding single drum rollers are
52 and 54 so shaped and arranged that when the rotatable
attached segments 44 are moved to the left, a gap

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is formed between the respective application rollers for the passage of a paper web 64. Are in this connection a plurality of idler rollers 66, 68, 70 and 72 also rotatably provided between the upright supports 22 and 24, to form a path for web 64 through unit 20.

Separate, like collection tray assemblies 40 are generally disposed in underlying relation to the respective coloring fluid pick-up rollers 56 and include a pan portion 74, a generally vertical, horizontally forwardly extending baffle 76, a pair of generally L-shaped side walls 77 and a short vertical rear wall 79. Additionally, rear upstanding impact monitors 80 are fixedly secured between the supports 22 and 24 and have forwardly extending side impact monitors 78 attached thereto. To facilitate the cleaning and the operation of the corresponding drum rollers, the collecting shelves 40 are connected, as shown fixed at 81, secured to the latter to be to allow · moved outside for the reasons mentioned gradually be moved back into the operating positions. ^ A plurality of horizontally arranged liquid nozzles 39 are arranged along an upper angled beam 82 provided on each front baffle 76 for applying a coloring liquid to the corresponding coloring liquid distributing rollers 76 located thereunder. In this connection it should be pointed out that resilient, annular seat rings 41 made of neoprene, rubber or the like are used for the seat of the nozzles 39 in the carrier 82 and separate dye liquid supply hoses

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84 is between a common manifold 86 and each of the respective segments 42 and 44 of the separate nozzle sets 39 extend. In addition, a supply line 88 extends from that part of a tub 74 to the interior of which it is connected is to provide a reflux for excessive coloring liquid delivered from the nozzles 39. In this regard it is a distribution block 89 is connected to the line 88 and provided therebetween with an O-ring 91 as a seal (see FIG Fig. 4). A check valve 90 is between the block 89 on the manifold 86 for flow monitoring of the dye liquid bypass while a flexible tube 92 extends from the block 89 directly to the coloring liquid supply source extends.

The bendable, synthetic resin, apertured, plate-like gauge member 94 is connected between the side walls 77 of the roller units 40 and frictionally extends to a corresponding adjacent dye liquid receiving roller 56. In this regard, it should be noted that each member 94 has a corresponding one roller 56 contacts at a point between the gap, the receiving by the transfer roller 58 and the coloring liquid roller 56 and the area of the roller 56 is formed where coloring liquid 39 is directed from the nozzles.

In Fig. 4 is the exact orientation of the nozzle 39, the coloring liquid receiving roller 56 and the measuring part 94 shown in greater detail. In this context, was found it particularly advantageous to arrange the nozzles 39 with respect to the roller 56 receiving the dyeing liquid so that

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that the angle (referred to in the drawing as angle ^M X ^M ) formed between a first imaginary vertical plane passing through the center of roller 56 (shown by dashed line 96) and an angled plane containing the horizontally oriented nozzles 39 intersects (represented by line 98) is approximately 45 °. Further, the nozzles 39 extend from the carrier 82 through openings 95 provided in the member 94 so that the latter serves as a central baffle for the coloring liquid from the nozzles 39. In addition, as described above, each measuring member 94 extends in biased, tangential contact with the corresponding roller 56 and the distal horizontal edge is somewhat spaced from the cylindrical surface of the roller 56.

As best seen in Fig. 4a, the measuring member 94 is a relatively thin, synthetic resin plate that forms a row Openings 95 has. In order to reinforce the plate 94, further separate reinforcement members (not shown) made of synthetic resin material can be used glued or otherwise attached to the appropriate ends for reinforcement purposes.

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In Fig. 10 essentially a diagram is shown which shows the entire dye liquid supply and return system. In particular, it has a supply tank 100 of a suitable coloring liquid and a supply line 102 which leads to a conventional distributor 86. A pump 104 is located in line 102 for supplying the coloring liquid for distribution "86" under pressure. A plurality of supply lines 84 connect the distribution 86 and the separate liquid nozzles 39 described above, wherein

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the latter are arranged in the vicinity of the collecting tray structure 40. Finally, a first return line 92 connects the block 89, which is connected to the bottom 40 for the return of the collected coloring liquid to the tank 100 * _t a shut-off valve 90 is arranged in the second return line, which the manifold 86 and the block 88 from those described above Reasons connects.

It is the same in the dyeing units according to the invention Desirably a device for adjusting the nip pressure between the various rolls of each respective one Compactors 52 and 54 to create. For this reason, there are removable adjustment knobs 28-38 on the outside of the Supports 22 and 24 are provided, as best seen in Figure 5, where the rollers of the respective compactors are shown in dashed lines. As the control mechanism associated with each respective compactor is, is the same, only the structure with the roller train 52, which is between the movable parts 44 of the carrier 22 and 24 is rotatably mounted, will be described in detail.

The position of the dye liquid receiving roller 56 and the transfer roller 58 can be adjusted with respect to the applicator roller 60 can be adjusted evenly by the use of an adjustment structure, denoted by the reference numeral 106 and is shown in detail in FIG. In particular, the structure 106 has a vertical one rectangular plate 108 which is in sliding engagement with part 44 of support 22. The plate 108 has an integral forward extending arm 110 and a central rectangular opening 112. The

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Removable wave-like projections form part of the adjustment handles 28 and 30 and extend through the top of the part 44 as well as the openings in the arm 110 in the plate 108 and are connected to the latter by means of nuts 114. The depending connecting bolts 116 and 118 are threadedly connected to the shaft-like extensions of the handles 28 and 30 for vertical movement therewith. A back and forth movement of the plate 108 is made possible by an eccentric cam 119 which is rotatably connected to the shaft 120 and is connected therewith to adjust the handle 36. The cam 119 has vertical projections 122 disposed therein and the plate 108 has a pair of spaced horizontally extending stops 124 and 126. The shaft 120 extends through the segment 44 of the carrier 22 and is connected thereto by means of a collar 128; the collar 128 also serves to connect the ends of the cross member 26 remote from the body, which extend between the spaced apart segments 44.

As can be seen from the foregoing description, the cam 119 comes when the adjustment handle 36 is turned counterclockwise is rotated, as can be seen in Figures 5 and 6, with the plate 108 engages and moves the latter below, whereby the depending connecting bolts 116 and 118 and the wave-like extension of the handle 28 and 30 can be moved similarly. Similarly, rods 116 and 118 and associated structure move upward moved when the handle 36 is rotated clockwise. It can be seen that the movement of the cam 119 in both

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Directions by the stop of the vertical bolt 122 with the corresponding stop members 124 and 126 is limited.

As shown in detail in Fig. 8, the connecting rods 116 and 118 are with a corresponding roller 156 and connected by generally rectangular, pivotally mounted plates 130 and 132. In Fig. 8 it can be seen that each The end of the roller 56 'that receives the dye liquid is one segment 44 a corresponding support 22 by means of a cup-shaped Bearing member 134 is rotatably mounted, the latter being connected to the segment 44 by bolts 136 and a nut 138 connected is. One end of the right angle plate 132 is rotatable with the segment 44 by means of a screw connection 140 connected and the vertical connecting rod 118 is at the remaining end of the plate 132 with a horizontal Shaft 142 connected. Similarly, the transfer roller 58 is right-angled rotatably attached by another outer Plate 130 connected to rod 116.

Since the respective connecting rods 116 and 118 are moved vertically by operating the handle 36, the Rollers 56 and 58 are evenly moved into or out of contact with the application roller 60. The relative setting of the nip pressure between the rollers 56 and 58 is provided by the simple means of axially adjusting either the handle 28 or reached 30. This is used to move vertically threaded rods 116 or 118 to thereby adjust the rollers associated with the latter. In this way, both rollers can move relative to each other Rotating the handles 28 and 30 can be moved in the appropriate direction. It can be seen that the use of the adjustment structure

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106 preferably occurs when it is initially desired that rollers 56 and 58 come into contact with adjustment roller 60 and that the fine adjustment of the first can be achieved through the special use of the handles 28 and 30 can.

In Fig. 7, the connection of the eccentric adjustment roller 62 is shown in detail. A cup-like one is special Link 144 with an eccentrically attached shaft 146 connected to segment 44 by means of a locking collar 148, which is welded to the latter. The collar 148 has an adjusting screw 150 (shown in Fig. 7) which is adapted to adjust the locking collar 44 in any desired To fasten position. The roller 62 has an axial shaft 152 received in the cup-like member 144 and is thus held by means of a connecting part 154 with a hexagon socket (Allen head). The unity also has a set of ball bearings 156 which allow roller 62 to rotate freely against application roller 60. If desires to adjust the tension between rollers 60 and 62, adjust screw 150 on the latter loosened and the roller 62 brought into suitable engagement with the application roller 60 by hand. At this point the Adjustment screw 150 tightened to ensure secure engagement between the respective rollers.

As further shown in Figures 1 and 7, the application roller 60 is between the corresponding parts 44 of the Carriers 22 and 24 are attached by means of cup-like, concentric bearings 158 which receive shaft 160, which

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again axially aligned with the corresponding application roller 60 is. It can be seen that cup-like bearing 158 is similar to bearing 144 in many ways, except that the former is concentric and has a threaded shaft extending through segment 44 and thereon is releasably attached by means of a nut 162.

In Figures 5 and 9 is the rotatable connection between the segments 42 and 44 of the respective supports 22 and 24 shown in detail. The connection has in particular a rectangular plate 164 which with the transversely extending arm portion of the fixed segment 42 and extending upwardly therefrom. The segment 44 is rotatably attached to plate 164 by a bolt 166 which extends through segment 44 and plate 164 extends and is thus secured by means of a snap ring 168. In this way, segment 44 is for a variety of purposes Formation of a paper web-receiving gap between the corresponding application rollers 60 of the roller train 52 and 54, as described above, rotatably movable. For this purpose a pneumatically operated connecting rod 48 is connected provided with the piston assembly 46 and the latter is controlled by a pneumatic valve 170 which is located on the outside of the corresponding carrier 22 and 24 is arranged, regulated. As can be seen in Fig. 5, pneumatic lines are the extending from a pneumatic source, shown with mating connection 172 and valve 170 connected thereto connected and the effect is controlled by means of a toggle switch. Pneumatic lines extend further (shown disconnected for purposes of illustration) between valve 170 and a separate pneumatic piston assembly 46 to optionally regulate the latter.

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The dyeing unit described above is particularly advantageous when used in conjunction with a high-speed in Row arranged a web-processing printing press of the type shown in Fig. 11 is used, which there with the Reference numeral 176 is designated. The press 176 in this case has only one roll stand for the purpose of illustration 178, which has a roll of endless off-white paper 180 in it. The first part of the press carries the dyeing unit 20, which has been described in detail above, followed by a sponge unit 182 which is used to make a suitable Apply tension to the paper web as it moves through the press. A pair of printing towers 184 and 186 are shown positioned downstream of the tension unit 182 to print on the colored web which running through it. The press 176 can, for example, by a numbering or punching head 188 and by a cutting or Perforation station 190 are supplemented, which forms the end. By using such presses (which in other circumstances have other operating units such as additional printing screens or web processing units can) it is possible to color sequentially, to print, number, punch, punch and prepare for shipment, with a single unit in in a continuous high speed fashion with minimal operational control. After this the unit 20 is arranged in an in-line web processing press 176 in the arrangement shown, the go through the following operations to carry out the dyeing operation. First are the appropriate segments and 44 of the upper supports 22 and 24 by means of the pneumatic

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Piston assembly 46 and the connecting rod 48 connected thereto are separated. For this purpose, the toggle switch 174 is rotated, to activate the valve 170 and allow pressurized air to enter the piston chambers 46 to the corresponding Segments 42 and 44 open.

The next step involves passing a web of paper 64 through the unit, particularly around the idler rollers 66, 68, 70 and 72 which form the staining path through the unit. The toggle switch 174 is then returned to its original Position moved back, whereby compressed air exits the valve 170 to retract the connecting rod 48, whereby a movement of the segments 42 and 44 against one another is effected. This creates a gap between the applicator rolls 60 of each respective roller train 52 and 54 with the web 64 therebetween. The gap pressure between the rollers in each compactor are next adjusted to have a transverse tangential engagement therebetween to ensure and the appropriate coloring liquid is introduced into the tank 100, which is provided for this. (In the In practice, a separate tank 100 or bottle is preferably provided for each colorant. Keep the cleaning work as little as possible when color changes be performed.)

The web 64 is then moved through the inking unit and the entire press 176, which in turn is the freely movable application rollers in contact with it. As best seen in Figure 3, the web 64 moves in a general manner vertically downward direction through the nip formed between the respective applicator rolls 60

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is formed, causing the latter to rotate counterclockwise. As a result of it moves the center transfer roller 58 clockwise as best seen in Figure 4 and receiving the dye liquid Roller 56 in engagement therewith is thereby caused to rotate in the opposite direction.

At the same time as the movement of the roller trains 52 and 54, which are correspondingly driven by the web, a coloring liquid is generated of the horizontally arranged nozzle sets 39, which are connected to the roller 55 which absorbs the corresponding dye liquid are upset. It will be understood that the coloring liquid can only be applied by one nozzle set 39 to only to dye one side of the web 64, but for the purpose of illustrating the operation in detail in this case is the Staining is done on both sides of the web.

If coloring liquid is incident from the nozzles 39 onto the rotating rollers 56, the _x liquid is in turn transmitted to the resilient transfer rollers 58 and finally against the resilient application rollers 60th At this point the coloring liquid is applied directly to the adjacent surface of the moving web 64 that is in contact with the roller.

Two separate devices are for regulating the accuracy and uniformity of coloring liquid application to the web 64 is provided. In particular, each line 84 is the extends from distribution 86 by means of conventional control valves controlled by a series of rotatable control handles 192 (see Fig. 5). These handles are on

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the outside of the support 22 attached to the actuation to facilitate and the associated mechanism serves to reduce the amount of staining liquid that comes out of the associated Nozzles 39 exits to regulate. In this way, it is possible to uniformly control the amount of water discharged from each nozzle 39 To regulate coloring liquid and to carry out a fine adjustment during the operation of the device in order to ensure that the web 64 is uniformly colored.

What is more important, however, is that an accurate measurement of the amount of liquid and color density that was last applied to the web 64 is made is achieved through the use of the bendable synthetic resin plate-like measuring member 94. the the latter are in a spanning, tangential, biased engagement with each respective coloring liquid receiving roller 56 between the point where the coloring liquid meets the latter and the gaps between the Rollers 56 and 58. By using the measuring members 94 it is possible to increase the flow from the corresponding nozzles 39 set a corresponding value and the same during substantially all changes in the web speeds The changes in web speeds often occur during high-speed printing. The resulting properties of the sensing members 94 permit action on the transfer roller 58 and in turn on the web amount of dye applied during corresponding changes to vary the forward speed of the latter. This is done without the need for constant monitoring or adjustment of the flow controls 192 or some similar setting, leaving the operator for other tasks is free, which allows more economical operation and more economical compliance with the color quality.

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Although the more precise way and way of working of the measuring element 94 is not fully understood, it is believed that when the coloring liquid receiving rollers 56 with rotate at a higher rotational speed due to the increasing web speed, larger amounts of dye liquid get onto the underside of the links 94 causing the latter to rise or to a larger one Adjust measure than they would normally adhere to. This resulting increase in hydraulic pressure causes more dye fluid, the pretensioned connection between the measuring members 94 and the dye fluid receiving rollers and the transfer roller 58 also passes over it. Therefore, as the web speeds increase, a larger one comes out Amount of dye liquid ultimately onto the applicator rollers 56 which is then applied to the web. Similar drips in lower web speeds more dye liquid from the dye liquid absorbing rollers 56, which then in the floor structures 40 are collected and smaller amounts of dye get through the connections between the Measuring elements 94 and the rollers 56. It is therefore even up to 500 m / min at essentially all web speeds (1500 feet per minute) and more allows the moving web to be uniformly colored without fear of voids or oversaturation.

When the commissioning of the dyeing unit according to the invention has been carried out, it is advisable to reduce the nip pressure between the different rollers in the roller trains to achieve optimal coloring. For this purpose, the im Adjustment device described in detail can be used and

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the unit can be started up again. Once the optimal conditions have been reached, it generally is it is not necessary to readjust the entire unit to avoid differences in the density of the liquid or the tendency to evaporate and other differences in coloring liquid and atmospheric Equalize conditions.

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Claims (20)

Claims 1. j Inking unit for use in web-processing printing presses with devices to move the web through the press, characterized in that a frame Has pair of upstanding supports which are adapted to be spaced from opposite to opposite Sides of the web to be placed when the unit is on the press, the first and second rollers are rotatably mounted between the carriers, each of the compactors having a number of freely rotatable rollers in the transverse direction tangential singriff, which consists of an application roller at one end and a dyeing liquid receiving roller at the opposite end consist of the application rollers in the first and second roller trains are arranged between the beams in adjacent transverse alignment to provide a gap for the web, when the unit is at the press and the web is passing through, and that devices with the unit are connected to a uniform flow of a coloring liquid on at least one of the coloring liquid receiving To bring rollers, which when the unit is at the press and a web through the nip runs, the rollers of the first and second roller train are driven evenly by the moving web be in order to thereby dye liquid, which initially on the Dye liquid receiving roller is directed to apply to at least one of the surfaces of the web. - 26 - B09815 / 092Ö 2. dyeing unit according to claim 1, characterized in that measuring devices with the flow devices and the dye liquid receiving rollers are connected to the amount of the coloring liquid applied to the web rules. 3. dyeing unit according to claim 2, characterized in that the measuring devices are a flexible, plate-like member have, the transversely mounted in biased, tangential contact on each dye-absorbing roller is that the measuring members with the corresponding dye liquid receiving rollers at points of the latter come into engagement, which lie in front of the points in the direction of rotation at which dye liquid is applied to the Y / alze is, and that corresponding gaps through the dye liquid receiving rollers and the adjacent rollers of the Train are formed that the measuring elements depending on the various hydraulic pressures that during the Change of the web speeds through the dyeing liquid on the rollers receiving the dyeing liquid are adjustable to allow a varying amount of the coloring liquid on the applicator roll to be transferred. 4. Dyeing unit according to claim 1, characterized in that the roller trains have an applicator roller, a transfer roller and a coloring liquid receiving roller with a coloring liquid receiving tray underneath the dyeing liquid take-up roller is to take up excess dyeing liquid that falls on the latter was applied. - 27 509815/0920 5. dyeing unit according to claim 4, characterized in that each of the pulley trains with an eccentric attached Adjustment roller is attached, which is in transverse, tangential engagement with the applicator roller for change of the nip pressure between the applicator rolls. 6. dyeing unit according to claim 1, characterized in that the upstanding carrier have the same opposing first fixed segments, in which a first The roller train is rotatably mounted in between and has second movable segments that are opposite one another, which are rotatably connected to the first segments and that the second compactors are rotatable between the second Segments are mounted, which are unitarily rotatable from a first position in which the applicator rollers of the first and second compactors in a transverse direction adjacent orientation are to be rotatably moved to a second position to form a gap which the applicator rolls are separate. 7. dyeing unit according to claim 6, characterized in that devices for moving the first and second segments are provided between a first and second position. 8. A staining unit according to claim 7, characterized in that it comprises a pneumatically operated reciprocating connecting rod connected to the first and second segments of each carrier for uniting the first and second segments of both carriers between the first and second positions move. - 28 - 509815/0920 9. Färbeinheit according to claim 1, characterized in that the flow devices comprise a set of nozzles that are adjacent at a distance in spanning relationship to each /And The application roller is arranged and suitable for / to apply a uniform stream of a coloring liquid to it, that a supply source for the coloring liquid is provided, that a pump and a line with the supply source are connected that a pump and nozzles for supplying the coloring liquid under pressure to the latter are provided when the unit is on the press and a web is moving through it. 10. dyeing unit according to claim 9, characterized in that the feed devices are from the supply source extend to a common manifold for each of the compactors, with a pump in between for pumping of the coloring liquid from the supply source to the separate manifolds is arranged in that separate supply devices extend from each of the common manifolds to the associated nozzles that are adjacent are arranged to the coloring liquid receiving rollers to lead coloring liquid to the nozzles. 11. dyeing unit according to claim 10, characterized in that each of the manifolds associated therewith devices for has independent change in the flow volume of the coloring liquid, which are fed to the nozzles. 12. Dyeing unit according to claim 1, characterized in that adjusting devices for adjusting the pressure between the rollers are provided in each of the compactors. - 29 509815/0920 _ oq _ 13. Dyeing unit according to claim 1, characterized in that idle rollers are rotatably arranged between the carriers are to guide the web through the nip formed by the applicator rolls when the unit is on a press and moves a web through it v / ircl. 14. Dyeing unit in combination with a web processing unit Printing press through which a web of paper moves, characterized in that a frame is a pair has above-standing carrier, which are arranged at a distance from one another on opposite sides of the web are that first and second compactors are rotatably mounted between the carriers, the compactors a Have a number of freely rotating rollers in the transverse direction tangential contact, and that an applicator roller at one end, a dye-absorbing roller is provided at the other end that the applicator roller are aligned adjacent in the transverse direction between the beams in the first and second roller trains, to form a gap through which the web passes so that devices are connected to the unit, to one to provide a uniform flow of a coloring liquid onto at least one of the rollers receiving the coloring liquid, as the web advances, that the rollers of the first and second roller trains pass evenly through the moving one Web are driven to thereby a coloring liquid, which is initially absorbed by the coloring liquid Roller was applied to at least one of the surfaces in the web. - OO - 509815/0920 15. Dyeing unit according to claim 14, characterized in that a movable plate-like consisting of a synthetic resin Measuring device is provided, which is stretched to each of the dye liquid receiving rollers and in transverse, prestressed, tangential contact with it is that the measuring members with the corresponding colored liquid receiving rollers at points of the latter come into engagement, which in the direction of rotation before the points lie on what coloring liquid is applied to them at which corresponding gaps are formed by the rollers receiving the coloring liquid and the adjacent ones Rolling of the trains> that the measuring members depending on the variable hydraulic directed against them During the change of the web speeds through the dyeing liquid absorbing pressure on the dyeing liquid Rollers are adjustable to allow varying amounts of the coloring liquid on the applicator roll to be transferred. 16. Dyeing unit according to claim 14, characterized in that the roller trains have an applicator roller, a transfer roller and a coloring liquid receiving roller that has a hingedly attached coloring liquid collecting tray is arranged under the roller absorbing the dye liquid, to collect superfluous coloring liquid applied to the latter. 17. Dyeing unit according to claim 14, characterized in that upstanding frame support same opposite one another have first fixed segments, between which a first - 31 - 509815/092 0 The roller train is rotatably mounted, and that second identical opposing segments are rotatable with the first segments are connected, between which a second Y / alzug is rotatably mounted that the second segments at the same time rotatable from a first position, in which the applicator rollers of the first and second roller train in a transverse direction adjacent orientation to form a gap are movable to a second position which the applicator rolls are separated. 18. dyeing unit according to claim 14, characterized in that Flow devices have a set of nozzles on iron, which are spaced adjacent in spanning relation to each the applicator rollers are arranged and suitable for applying an equal stream of a dye liquid to them, that a supply source for the dye liquid is provided, that pumps and feed devices with the Supply source are connected, and that pumps and nozzles for the supply of the coloring liquid to the latter are provided. 19. Web-processing dyeing unit with a plurality of freely movable ones Rollers in transverse, tangential engagement disposed between spaced apart beams to form first and second roller tails, each draw having an applicator roller at one end and a coloring liquid receiving roller at the remaining end, with the corresponding applicator rollers in adjacent transverse alignment are arranged to form a gap therebetween to provide a method of - 32 - 5 0 9 8 15/0920 To carry out coloring of a web of material, characterized in that devices are created to evenly applying a stream of a coloring liquid to at least one of the rollers receiving the coloring liquid, that a web of material advances through the gap, and thereby the rollers of the first and second roller train drives uniformly that a stream of a coloring liquid on at least one of the coloring liquid receiving rollers is applied, whereby, as the web advances and the rollers of the respective rollers are driven are, the coloring liquid from the coloring liquid-absorbing roller to the applicator roller and thereby onto the Railway is transmitted. 20. The method according to claim 19, characterized in that the amount of the coloring liquid applied to the web is automatically regulated depending on the changing web speeds. 5 0 9 8 15/0920