EP1452472B1 - Device for turning a web - Google Patents

Abstract

A web deflecting device comprises two turning bar holders connected with axial ends of a shiftable turning bar and guided movably along two guides, respectively; an adjusting mechanism for adjusting the first and/or second turning bar holders along the guides to position the first and/or second turning bar holders for the shifting of the turning bar; and a manually operable connection between the turning bar and the first holder. A web deflecting device comprises a shiftable turning bar (1, 2); a first turning bar holder (11a, 11b, 11c) connected with one axial end of the turning bar for holding the turning bar; a second turning bar holder (12) connected with the other axial end of the turning bar for holding the turning bar; two guides (21, 22); an adjusting mechanism for adjusting the first and/or second turning bar holders along the two guides to position the first and/or second turning bar holders for the shifting of the turning bar; a manually operable connection between the turning bar and the first turning bar holder for manual separation and establishing a connection manually to separate the turning bar manually from the first turning bar holder during a shifting of the turning bar and to connect the turning bar manually with the first turning bar holder positioned in a shifted position. The turning bar holders are guided movably along the two guides, respectively.

Description

The invention relates to a device for deflecting a web, preferably for turning and / or sweeping. The device has at least one convertible turning bar.

Turning bars are used in machines that process or process web-shaped material, for turning or sweeping a web or just to redirect the web with respect to its conveying direction, for example by 90 °. Prominent examples of such machines are web-fed rotary printing presses, as it is also preferred for the invention. In order to increase the flexibility in the merger of multiple tracks, which in the following also the strands of a longitudinally cut web to increase or change in the case of a simple change of direction only the new direction, the turning bars of an arrangement of several turning bars or only individual turning bars of Arrangement or optionally also only one of the turning bars umlegbar. The property of relocatable means that the respective turning bar can be moved from a starting position which it occupies in the web plane to a new position in the web plane in which it points at a different angle than in the starting position to the conveying direction of the web. In general, the turning bars of rotary printing presses are at an angle of 45 ° to the conveying direction of the incoming web and are rotated or pivoted at the deflecting by 90 ° so that they point after deflecting at an angle of 135 ° to the conveying direction of the incoming web ,

Problems causes the turning of turning bars, in particular in the web-fed rotary printing, to which the invention preferably but not exclusively is directed. In web-fed rotary presses, the turning bars serve to bring together several webs. A large number of turning bars is often combined in such an arrangement in the smallest space. In the conversion of the machine from one printed product to another printed product, for example from a newspaper product to another newspaper product, generally several, possibly all turning bars of the arrangement must be transferred in order to adapt the arrangement to new web paths. Not least because of the poor accessibility to the individual turning bars, the configuration is time-consuming and therefore costly.

From the US-A-2,284,318 is a device for deflecting a web, for example for a printing machine, known which has longitudinal guide rails. On the guide rails sliders are mounted, which are moved along the guide rails, but can be fixed in certain positions. On the slides pivot heads are attached, which can be fixed in any desired angular position on the slides. Through the heads extending turner bars, which can be moved in relation to the heads and fixed in desired positions. By loosening the respective fixations, the sliders along the guide rails can be moved to a desired position, resulting in a corresponding movement of the turning bars without loosening of the heads.

From the US-A-5,100,117 or the corresponding DE-C1 40 13 229 For example, there is known a turner bar assembly for superposing strands for a web-fed rotary printing press wherein the turner bars have a bar head at one end. These rod ends are stored in turning bar carriers. The turner bar supports are longitudinally slidably mounted on a traverse which is mounted at both ends in the side walls of the turning bar structure of the printing press. Each turning bar carrier is assigned a threaded spindle whose longitudinal axes are parallel to the traverse. A geared motor interacts with the threaded spindle.

The other end of the turning bars is held in each case in a sliding guide; Each slide is associated with a threaded spindle, which is each connected to a geared motor.

When changing production, the turner bars can be turned by 90 ° by means of the gearmotors.

Automatically reversible turning bars, such as those from the DE 43 11 437 A1 are known to eliminate these disadvantages, but are associated with a high mechanical and also regulatory technical effort. For the turning of a turning bar several motors are required, and it must be coordinated with each other, the motor-driven movements of the turning bar with respect to two axes of movement. Corresponding effort is also to operate for the storage of the turning bar.

It is an object of the invention to reduce the to be operated for the rapid transfer of a turning bar technical effort.

The invention relates to a device for deflecting a web, preferably for turning and / or sweeping a web. The device comprises at least one foldable turning bar. If it is a device for turning and / or sweeping a web, the device comprises at least one further turning bar, which is preferably also convertible, but need not be. For sweeping a path to the at least one pair of turning bars preferably also includes a laterally arranged from the pair deflection, promoted by the one turning bar expiring web and is guided by looping the lateral deflecting back and over the other turning bar of the pair. Particularly preferably, the device comprises a plurality of turning bar pairs and more preferably per turning bar pair each at least one such lateral deflecting device. Each of the turning bar pairs and the optionally provided per pair lateral deflecting device can in particular in be summarized a floor, wherein the device in this case has two, three or more superimposed floors of this type.

The apparatus further comprises for the at least one foldable turning bar a first turning bar holding means connected to one axial end of the turning bar, a first guide along which the first turning bar holding means is movably guided, and another second turning bar holding means connected to the other axial end the turning bar is connected, and a second guide, along which the second turning bar holding means is movably guided. The turning bar thus extends between the two transversely to the turning bar facing guides and can be adjusted along the guides. The guides are preferably linear guides and may in particular extend in or parallel to the web plane, preferably horizontally.

The device further comprises an adjusting device for at least one of the two turning bar holding devices. The respective turning bar holding device is adjustable by means of the adjustment along its guide in order to reposition them for a turning of the turning bar. The adjusting device can be coupled to both turning bar holding devices for their adjustment. Preferably, it is coupled to only one of the two. Particularly preferably, the first adjusting device is adjustable by means of the adjusting device.

The connection between the turning bar and the first turning bar holding device is manually detachable and can also be made manually. Preferably, the compound is formed as a quick release, which can be quickly solved without tools and also produced quickly. When turning the turning bar is released manually in a first step by the first turning bar holding device. The connection between the turning bar and the second turning bar holding device remains during the Umlegvorgang exist. In this sense, it is a permanent connection, which is preferably solved only for an exchange of the turning bar.

After loosening, the first turning bar holding device is moved along the first guide from a starting position, which it assumes before folding, into the predetermined new position, which determines the orientation of the turned over turning bar. Preferably, the adjustment and positioning, d. H. Fixation in the new position, effected by the adjustment. After loosening and before, after or preferably during the positioning of the first turning bar holding device, the second turning bar holding device is moved along the second guide to its new position, which in the case of the preferred for the second turning bar holding device manual adjustment advantageously by appropriate handling of the turning bar can be accomplished. If the adjustment causes the adjustment of the second turning bar holding device, the turning bar is held during the adjustment by the operator. The new position of the manually adjustable turning bar holding device is predetermined by the total length of the turning bar extending between the guides and the two adjoining turning bar holding devices. After the second turning bar holder has been moved to its new position, the first guide facing, still free end of the turning bar is manually set again on the first guide. The fixing is effected by connecting the turning bar to the first turning bar holding means.

The first turner bar holder may be formed by a single first turner bar holder. Preferably, however, the first turning bar holding means comprises at least two first turning bar holders, each of which is formed such that the foldable turning bar is manually connectable to each of the first turning bar holders and manually releasable from the respective first turning bar holder. The at least two first turner bar holders each form at least one, preferably only one, connection point for connection to the turner bar, wherein the junctions are of identical construction or at least identical in that the connection to the turner bar can be made and released with the same handles.

In preferred embodiments, the two or more first turning bar holders are movably guided along the first guide and can be adjusted together by means of the adjusting device.

If the first turning bar holding device comprises at least two first turning bar holders as described, the turning bar is connected to one of the at least two first turning bar holders prior to folding, while after the folding is preferably connected to the other of the at least two first turning bar holders. The first turning bar holding device is accordingly adjusted, preferably by means of the adjusting device, that the one of the at least two first turning bar holder, which was not connected to the turning bar prior to folding, adjusted to the new position and then connected to the turning bar. By arranging two or more first turning bar holders per foldable turning bar, which are adjusted together by the adjustment so that one of the first turning bar holder occupies the new position, compared to a device with only a single first turning bar holder per turning bar shortened the adjustment and the Verstellzeit be reduced accordingly.

The adjustment of the adjustable by means of adjusting turner bar holding device is preferably effected by motor. In this case, it is preferred if a separate, separate adjusting motor is provided for each reversible turning bar. The adjusting motor or, in the case of a plurality of reversible turning bars, which act correspondingly to a plurality of adjusting motors or preferably each act via a gear on the turning bar holding device. Preferably, a threaded spindle and the turning bar holding device form a screw joint or the plurality of turning bar holders of the respective turning bar holding device each a screw joint. Such a motor may have its associated threaded spindle directly as a rotor or preferably coupled via another gear with the threaded spindle. Basically, a hand crank can be provided per umlegbarer turning bar instead of an adjusting motor, which also acts in a preferred embodiment via a threaded spindle on the associated Wendestangenhalteeinrichtung. A manually operable adjusting device can instead of a threaded spindle via a Linkage, although less preferred, acts on the associated turning bar holding device. In principle, this also applies to the preferred motor adjustment, for example in the case of a motorized adjustment by means of linear drive.

The invention combines the advantages of purely manual and fully automatic assignment of turning bars together, but at the same time avoids significant disadvantages of these two methods. Thus, to relocate the turning bar, the operator does not have to disengage both bar ends from their respective holding devices, as is common in purely manual methods, but only has to disengage one end from the first turning bar holding means while maintaining the connection at the other end of the turning bar. The adjustment of the turning bar holding device coupled to the adjusting device is either carried out automatically or can be carried out manually, for example, from a side wall of a frame carrying the guides. Subsequently, or during the adjustment of the respective turning bar holding device, the operator, the loose end of the turning bar holding the second turning bar holding device by means of the turning bar to direct in their new position, if the position must be changed. The turning bar itself serves via the articulated connection with the second turning bar holding device as Verstellgestänge. If the second turning bar holding device is adjusted by means of the adjusting device or a further adjusting device, the operator need only hold the dissolved turning bar and adjust the first turning bar holding device, if this is not automatically adjusted.

In preferred embodiments, the connection of the turning bar with the first turning bar holding device is a latching or snap connection. If the turning bar is assigned a plurality of first turning bar holders, each of these first turning bar holders is designed to obtain a latching or snap connection with the turning bar.

The latching or snap connection is preferably formed as a quick release, which allows a quick release and a quick connection by hand without tools. The quick release is preferably formed by a receptacle which is open on one side and a connecting element which can be received in the receptacle. The recording may be at the end of the turning bar and the connecting member may be provided on the first turning bar holding means. However, the receptacle is preferably formed on the first turning bar holding device and the connecting element on the end of the turning bar. The receptacle is preferably open to such a side, that the connecting element passes through a taking place in the web plane pivotal movement of the turning bar in the receptacle and from the recording. The receptacle and the connecting element are preferably even formed so that the connection can be made only by a pivoting movement in the web plane and can only be solved by such a pivoting movement, wherein the here for purposes of determining the recording cited pivoting movement preferably only a small part of Pivoting movement makes, which performs the turning bar in the total folding.

The latching or snap connection is advantageously secured by means of a blocking element, which is tensioned by application of a resilient force in a locking position. Such a locking means may in particular be a linearly guided locking pin or a pivotable snap hook in the manner of a pawl. The locking element is advantageously asymmetrically shaped, such that the connecting element is moved by the pivoting movement of the turning bar in the receptacle and thereby pushes the locking element against the elastic force from the locking position, but it is reliably prevented from it by the pressing in the direction of pivoting turning bar its blocking position can be moved. For swinging, d. H. for the release of the turning bar, the locking element must rather be moved by hand against the elasticity force of the locking position, for example, by being pulled, pushed or pivoted.

The second turning bar holding device is preferably continuously free along the second guide and can be displaced with little friction. The second guide preferably forms a sliding guide for the second turning bar holding device.

The connection of the turning bar with the second turning bar holding device is formed in a preferred embodiment of a rotary joint. The axis of rotation of the swivel joint preferably has vertical to the web plane when the turning bar is connected to the first turning bar holding device, so that the pivoting movement of the turning bar taking place in the web plane is made possible by the articulation of the turning bar on the second turning bar holding device.

The turning bar detached from the first turning bar holding device but still connected to the second turning bar holding device is, in a preferred embodiment, pivotable not only in the web plane but also out of the web plane. In order to enable this pivoting movement, a pivot joint is formed with a pivot axis extending in or parallel to the web plane, preferably pointing perpendicularly to the conveying direction of the web. This swivel joint is preferably also formed as a hinge, preferably between the second turning bar holding device and the second guide, in that the second guide form the pivot axis and the second turning bar holding device forms a bush partially or fully embracing the second guide. The rotary joint for the pivoting movement of the turning bar about the vertical plane of rotation to the web and pivot axis is preferably formed on a rigidly projecting from the sleeve arm.

It should also be noted with regard to the first guide and the first turning bar holding device that the first guide in a preferred embodiment also forms a sliding guide for the first turning bar holding device. In this case, the first turning bar holding device may in particular have a guide part which is shaped as a partial bushing or preferably a full bushing, which partially or preferably completely surrounds the first guide and is guided in a closely guided manner on the first guide. The connection with the foldable turning bar is preferably formed on a rigidly projecting from the guide member arm. If the first turning bar holding device is coupled to the adjusting device, it has an engagement part, which is in engagement with the adjusting device. If the engagement as preferred formed with a threaded spindle of the adjustment, the engagement member forms a partial or full sleeve with an internal thread, which is in engagement with the thread of the threaded spindle. If a plurality of first turning bar holders form the first turning bar holding device, then preferably each of the first turning bar holders is formed in this way. If the second Turning bar holding device is coupled to the adjustment or another adjustment, applies mutatis mutandis the same.

Preferred further features of the invention are also described in the subclaims and by the combinations of claims.

Fig. 1

eine Wendestangenanordnung mit umlegbaren Wendestangen in einer Ausgangskonfi guration;

Fig. 2

die Wendestangenanordnung in der Seitenansicht A der Fig. 1;

Fig. 3

die obere Etage der Wendestangenanordnung der Fig. 1 mit zwei umlegbaren Wendestangen, die je die in Fig. 1 dargestellte Ausgangsposition einnehmen;

Fig. 4

die beiden Wendestangen der Fig. 3 während eines ersten Umlegvorgangs;

Fig. 5

die Seitenansicht B der Fig. 4;

Fig. 6

die obere Etage in einer ersten neuen Konfiguration nach Abschluss des ersten Umlegvorgangs;

Fig. 7

die beiden Wendestangen der Fig. 3 während eines anderen Umlegvorgangs, bei dem nur eine der Wendestangen umgelegt wird;

Fig. 8

die Wendestangen in der Seitenansicht C der Fig. 7;

Fig. 9

die obere Etage in einer zweiten neuen Konfiguration nach Abschluss des zweiten Umlegvorgangs;

Fig. 10

die obere Etage in einer dritten neuen Konfiguration nach einem Parallelversatz von einer der beiden Wendestangen; und

Fig. 11

eine Verbindung von einer der Wendestangen mit einem Wendestangestangenhalter einer ersten Wendestangenhalteeinrichtung.

The invention will be explained below with reference to a preferred embodiment. The features disclosed in the exemplary embodiment form each individually and in each combination of features the subject matter of the claims and also the features explained above in a preferred manner. Show it:

Fig. 1

a turner bar assembly with foldable turner bars in a Ausgangskonfi guration;

Fig. 2

the turning bar arrangement in the side view A of Fig. 1 ;

Fig. 3

the upper floor of the turning bar arrangement of Fig. 1 with two foldable turning bars, each in the Fig. 1 take the initial position shown;

Fig. 4

the two turning bars of the Fig. 3 during a first transfer operation;

Fig. 5

the side view B of Fig. 4 ;

Fig. 6

the upper floor in a first new configuration after completing the first transfer operation;

Fig. 7

the two turning bars of the Fig. 3 during another transfer operation, in which only one of the turning bars is folded;

Fig. 8

the turning bars in the side view C of the Fig. 7 ;

Fig. 9

the upper floor in a second new configuration after completion of the second transfer operation;

Fig. 10

the upper floor in a third new configuration after a parallel offset of one of the two turning bars; and

Fig. 11

a connection of one of the turning bars with a turning bar rod holder of a first turning bar holding device.

Fig. 1 shows in a perspective view and Fig. 2 in side view A a turning bar assembly with two turning bar floors, namely an upper floor 3 and a lower floor 4, which serves for the merging of printed web strands in a web-fed rotary printing press for the printing of large newspaper editions. The two turning bar floors 3 and 4 are each formed by two turning bars 1 and 2 and the associated facilities for storing and adjusting the turning bars 1 and 2. The turning bar floors 3 and 4 differ only by their arrangement, ie the floor 3 is arranged vertically above the floor 4, but otherwise, ie, in themselves, identical to each other. With the exception of minor differences that play no role in the invention, the turning bars 1 and 2 of each floor 3 and 4 and the respective associated facilities for storing and adjusting the turning bars 1 and 2 are identical to each other.

The entire turning bar arrangement is mounted between two frame walls of the machine, of which only the front frame wall 10 is shown. Each of the turning bars 1 and 2 is connected at one of its two axial ends to a first turning bar holder 11a and at the other end to a second turning bar holder 12. The turning bars 1 and 2 are each associated with a first guide 21 and a second guide 22, which are formed in the embodiment as usual as linear guides. Here, per turning bar 1 and 2, the first turning bar holder 11a on the first guide 21 and the second turning bar holder 12 on the second guide 22 closely slidably guided. The guides 21 and 22 extend transversely to the turning bars 1 and 2 and are secured at their ends to the front frame wall 10 and the opposite, not shown, frame wall of the machine frame. The guides 21 and 22 are per turning bar 1 and 2 in pairs and each other to each other guides 21 and 22 parallel.

Per turning bar 1 and 2, a second turning bar holder 12 is provided. The turning bar 1 or 2 is released from its second turning bar holder 12 only for maintenance or repair work, in particular for replacement, and is in this sense permanently connected to its second turning bar holder 12. Per turning bar 1 and 2, however, several first turner bar holder are provided. For the upper turning bar 1 per floor 3 and 4, two first turning bar holders 11a and 11b are provided while the lower turning bar 2 per floor 3 or 4 three first turning bar holders 11a, 11b and 11c are assigned. The upper turning bars 1 are connected to either the first turning bar holder 11a or the second turning bar holder 11b according to their position, ie, orientation with respect to the web conveying direction. The lower turning bars 2 are also connected to either the first turning bar holder 11a, the first turning bar holder 11b, or the first turning bar holder 11c according to their position, ie, orientation with respect to the web conveying direction. The turning bar holders 11a and 11b of the turning bars 1 and 2 differ only with respect to a receptacle 14 formed on each of the turning bar holders 11a and 11b, which is shaped like an eye open to one side. When the turning bars 1 are connected to one of their first turning bar holders 11a and 11b, a connecting element 7 is received in the receptacle 13 of the respective turning bar holder 11a or 11b which is formed per turning bar 1 at its end facing the first guide 21.

The connection is in Fig. 11 shown in detail. Also, the first turning bar holder 11a, 11b and 11c of the lower turning bar 2 are equal to each other except for the orientation of their respective receptacle 13. The turning bar holder 11c corresponds to the turning bar holder 11a. The turning bar holders 11a and 11b of the turning bar 1 and the turning bar holders 11a to 11c of the turning bar 2 have different orientations for easier pivoting in and out of the respective turning bar 1 or 2 into the receptacle 13 of the first turning bar holder 11a forming the connection , 11b or 11c. The pivoting and pivoting of the turning bars 1 and 2 serving receptacles 13 are open to such a page that the associated turning bar 1 or 2 with its connecting element 7 only by a pivoting movement that takes place in its last or first part in the web plane in swing the receptacle 13 or swing out of the receptacle 13.

The connection of the turning bars 1 and 2, each with one of the associated first turning bar holder 11 a, 11 b and 11 c is as rigid as possible, but on the other hand allows a comfortable, quick release and connecting the turning bars 1 and 2 with the first Turner bar holder 11a, 11b or 11c with a few simple steps without the aid of tools or other aids.

The first turning bar holders 11a, 11b and 11c each have a blocking element 14, which is formed as a linearly guided locking pin. The blocking element 14 is stretched by a resilience, which is generated for example by a force acting on the locking element 14 compression spring in a locked position in which it prevents that between the turning bar 1 or 2 and one of the associated turning bar holder 11 a, 11 b or 11 c existing Connection can be solved.

The connection of the turning bars 1 and 2 with the respectively associated first turning bar holder, for example, also representative of the other, with the first turning bar holder 11 a, is in Fig. 11 shown for the turning bar 2. Any differences in the compounds, on the one hand for those of the turning bar 1 and on the other hand, those for the turning bar 2, are irrelevant to the invention. Fig. 11 shows the turning bar 2 and the first turning bar holder 11 a in the connected state. The connecting element 7 of the turning bar 2 is closely received in the receptacle 13 and is secured by the locking element 14 located in its locking position. The securing takes place in that the blocking element 14 locks the open side of the receptacle 13 by protruding a little way into the receptacle 13, so that it comes to lie in front of the connecting element 7 as seen from the open side of the receptacle 13. The blocking element 14 is asymmetrically shaped at its end projecting into the receptacle 13, such that its front side facing the open side of the receptacle 13 is tapered towards the free end of the blocking element 14, while its rear side facing the connecting element 7 has a shape which reliably prevents the turning bar 2 can be pivoted with its connecting element 7 alone by acting in the direction of pivoting force from the receptacle 13. Due to the taper of the locking element 14 at the front, the turning bar 2, however, can be pivoted into the receptacle 13 and thus into the connection with the turning bar holder 11a, without requiring the locking position releasing operation of the locking element 14. The blocking element 14 is from the pivoting connecting element 7 rather against the elastic force simply from the locking position pressed, however, snaps behind the pivoted-in connecting element 7 by itself again in the locked position, when the connecting element 7 has passed the locking element 14 during pivoting. For releasing the connection, the blocking element against the elasticity force by hand is sufficiently far from the receptacle 13 and thus moved from the locked position.

Each of the first turning bar holders 11a to 11c is motor-adjustable along its first guide 21. The adjustment is effected by means of an adjusting device comprising per turning bar 1 and 2, a separate, own adjusting motor 20 and a variable speed. Each of the adjusting mechanism consists of a threaded spindle 19 which extends parallel to the respectively associated first guide 21. The first turning bar holders 11a, 11b and 11c form a screw joint with the respective associated threaded spindle 19 so that an adjustment movement of the first turning bar holders 11a, 11b takes place during a rotary drive of the spindles 19 because of the guidance of the first turning bar holders 11a, 11b and 11c on the first guides 21 and 11c along the first guide 21 causes. The motors 20 are coupled with their respective associated threaded spindle 19 via a reduction gear.

The first turning bar holders 11a and 11b of the upper turning bar 1 are guided by the same first guide 21. They also form with the same adjusting spindle 17 each a screw joint, ie they are adjusted together and retain their adjustment in the direction of the first guide 21 measured distance. This distance is half as large as the total available for the adjustment length of the first guide 21, on which the first turning bar holders 11a and 11b of the upper turning bar 1 are guided. By arranging a pair of first turning bar holders 11a and 11b, not only the opening of the receptacle 13 required for pivoting in and out can thus be optimally aligned, but also the adjustment path to be traversed for the adjustment in comparison with the arrangement of only a single first turning bar holder 11a or 11b per turning bar 1 are reduced. The conditions in the first turning bar holders 11a, 11b and 11c of the lower turning bars 2 are the same, and the turning bar holder 11c is specially provided for so-called three-judge productions.

In order to reduce or ideally eliminate frictional forces between the turning bars 1 and 2 and the webs or web strands of a longitudinally cut web which wrap around them, the turning bars 1 and 2 are surrounded with blast air. The blowing air passes through blown air holes 5 to the surface of the turning bars 1 and 2. The turning bars 1 and 2 are correspondingly hollow, so that the blown air depending on a Blasluftanschluss 6 in the hollow turning bars 1 and 2 and from there via the Blasluftlöcher 5 to the surface the respective turning bar 1 and 2 and thus passes under the web or the web. For Blasluftversorgung also include per turning bar 1 and 2, a blast line 17, which extends over the length of the respective turning bar 1 and 2 associated first guide 21 and from which a Blasluftanschluss 18 branches, connected to the Blasluftanschluss 6 of the respective turning bar 1 and 2 is, wherein in the figures, the flexible connection between the Blasluftanschlüssen 6 and 18 is not shown. The blowing air holes 5 are formed per turning bar 1 and 2 only on a hemisphere of the circular cylindrical surface. The circular cylindrical shells of the turning bars 1 and 2 are respectively rotatable about the longitudinal axes of the turning bars 1 and 2 in order to rotate the blast air holes 5 in all positions of the turning bars 1 and 2 in each of the web or web strand looped peripheral region. The rotation can be made in particular between two locking positions, in which the rotatable shells of the turning bars 1 and 2 are rotated in an adjustment of the turning bars 1 and 2 corresponding to the web guide. Instead of Blasluftlöchern 5 and the corresponding Blasluftversorgung the turning bars 1 and 2 could also be provided with a friction-reducing coating. However, the blast air supply is preferred.

Fig. 3 shows a single of the turning bar floors 3 and 4 in the same state as the FIGS. 1 and 2 , In this state, the two turning bars 1 and 2 of the floor 3 or 4 parallel to each other and between them in the direction of the guides 21 and 22 measured distance. The turning bars 1 and 2 are each connected to their first turning bar holders 11a.

It is assumed that the web or the web strand enters the turning bar floor 3 or 4 in the conveying direction F on the side of the adjusting motors 20. If only the term "web" is used in the following, this term should also apply to a web strand which has been obtained by longitudinal section of a web of several strands. In the assumed conveying direction F, the web first passes over the upper turning bar 1, wraps around the turning bar 1 and runs exactly at right angles to the original conveying direction F on the lower turning bar 2, wraps around the turning bar 2 also and is thus turned over. The web experiences by the looping of the pair of turning bars 1 and 2, a parallel offset away from the side with the adjusting 20. The thus turned path is half as wide in the embodiment as the turning bar floors 3 and 4 or narrow, for example one third as wide.

If the turning bar floor 3 or 4 serve in another print production turning a web with half the width, which enters the turning bar floor 3 or 4 on the side facing away from the adjusting motors 20, both turning bars 1 and 2 of the floor 3 or 4 are allocated accordingly , By flipping the orientation of the turning bars 1 and 2 seen in the plane of the web is changed by 90 °.

The Fig. 4 and 5 show the transition from the initial configuration of the Fig. 3 to a first new configuration. The initial configuration and the first new configuration are reversing configurations.

Fig. 6 shows the turning bar floor 3 or 4 in the first new configuration, in which the turning bars 1 and 2 are again parallel to each other, but in a 90 ° pivoted orientation, as seen in the plane of the web.

The turning bars 1 and 2 are pivoted in a folding by superimposing a pivoting movement in the plane of the web with a leading out of the plane of the web pivoting movement. A pure pivoting movement in the plane of the web is not possible in the embodiment. For the superimposed pivoting movement, the turning bars 1 and 2 each form a first pivot through the connection with their These rotary joints form rotary axes V which, in the operating state, ie when the turning bars 1 and 2 are connected to their associated first turning bar holders 11a, 11b or 11c, are vertical to the plane of the incoming web. Depending on a second pivot joint is formed by the second turning bar holders 12 and the respectively associated second guide 22. The axes of rotation H of the second hinges extend in the plane of the incoming web, which coincides generally with the horizontal, but this is not absolutely necessary. To form the second rotary joint with the associated second guide 22, the second turner bar holder 12 each have a guide part which forms a guide sleeve 22 completely, tightly enclosing slide bushing , From the guide part of each turning bar holder 12 each a short arm protrudes stiffly in the direction of the opposite first guide 21 from. The first pivot, ie pivot for the pivotal movement in the plane of the incoming web, is formed at each of the second turning bar holder 12 at its projecting arm. In the exemplary embodiment, the projecting arms are each provided with a pointing in the direction of the axis of rotation V of the relevant joint bore. At the end of the associated turning bar 1 or 2, a pin is accordingly formed projecting perpendicular to the longitudinal axis of the turning bar 1 or 2, which is rotatably received in the bore of the associated turning bar holder 12. In this way, with the turning bar 1 or 2, the associated second turning bar holder 12 and the associated second guide 22 as joint elements per turning bar 1 and 2 each receive a double joint with the rotary and pivot axes H and V.

Below is the transfer of the initial configuration of Fig. 3 in the first new configuration of the Fig. 6 based on Fig. 3 to 6 and the transfer of the configuration of Fig. 3 into a second configuration based on the Fig. 3 and 7 to 9 described.

For the transfer, an operator enters through the between the guides 21 and 22 perforated frame wall 10 directly into the area of the turning bars 1 and 2 and solves by hand depending on the connection of the turning bars 1 and 2 with the associated first turning bar holder 11a, namely by pulling the locking elements 14 and pivoting the turning bars 1 and 2 from the receptacles 13. After loosening the two compounds, the upper turning bar 1 from the plane of the incoming web is up and the lower turning bar 2 down to the swung out respective pivot axis H, as from the Fig. 4 and 5 is apparent. Subsequently, the tilted from the web plane turning bars 1 and 2 are pivoted to the plane of the incoming web slightly tilted pivot axes V each 90 °. Before, during or after the execution of this superimposed pivoting movement per turning bar 1 and 2, but of course after the manual release of the compounds, the first turning bar holder 11a and 11b of the upper turning bar 1 together by means of the associated adjusting device 19, 20 to the maximum adjustment of the Adjusting motors 20 away in the direction of the opposite frame wall to adjusted in their respect to this adjustment direction outermost positions 19 and fixed by means of the associated adjusting device 19, 20 in their new positions and thereby positioned. The fixation causes at fixed adjusting spindle 19 of the adjustment in each screw joint. Also, the first turning bar holder 11a to 11c of the lower turning bar 2 are adjusted together by means of their adjusting device 19, 20, but in the opposite direction to the adjusting motors 20 to their outermost with respect to this direction positions. After the first turning bar holders 11a to 11c have assumed the new positions, the turning bars 1 and 2 are connected to those of the associated first turning bar holders 11a and 11b and 11a to 11c, respectively, which occupies the position corresponding to the new configuration. For the upper turning bar 1, this is the turning bar holder 11b facing away from the side of the adjusting motors 20, and for the lower turning bar 2 this is the turning bar holder 11b furthest away from the side of the adjusting motors 20.

Already during the superimposed pivoting movement, the second turning bar holders 12 are moved in a sliding manner on their second guides 22. For this purpose, the sliding guide between the second guides 22 and the second turning bar holders 12 is advantageously low-friction, but narrow, so that the turning bar holder 12 can be moved along the second guides 22 along as smoothly as possible. The adjustment of the positions of the second turning bar holder 12 can be connected to the second Turn bar holders 12 are made directly. Advantageously, however, the turning bars 1 and 2 can be used for the adjustment of the second turning bar holder 12 as a linkage. For this purpose, it is advantageous if the distance between the hinge axes H and the guides 22 and thus the lever arms acting as rods when using the turning bars 1 and 2 are as short as possible.

During the folding, the operator further rotates the coats of the turning bar 1 and 2 provided with the blowing air holes 5 each by 180 °, as can be seen from the comparison of FIGS Figures 3 and 6 and in particular the comparison of the views of Figures 2 and 5 is recognizable. The turning bars 1 and 2 are provided for this purpose with locking means which form per turning bar 1 and 2 for their coats the corresponding locking positions.

The connection between the turning bars 1 and 2 and their new holders 11b is effected by a slight pivoting back of the turning bars 1 and 2 and pivoting into the receptacle 13 of the respective associated turning bar holder 11b. The pivoting alone is sufficient to push the locking elements 14 of the turning bar holder 11b out of the way of the connecting element 7 and thus out of the blocking position. Behind the pivoted-in connecting element 7, the blocking elements 14 again snap in, so that the turning bars 1 and 2 are secured to the turning bar holders 11b and the connections are made.

The folding of the turning bars 1 and 2 can be carried out at the same time. Appropriately, the turning bars 1 and 2, however, are successively folded.

Fig. 9 shows the turning bars 1 and 2 in a sweeping configuration. In this second new configuration, a web half maximum width, or even smaller width, for example, a third width, which enters at the side facing away from the adjusting 20, by wrapping the upper turning bar 1 by 90 ° from the conveying direction F of the incoming web on a Guided deflection, for example, a guide roller, which is arranged on the side of the adjusting motors 20. The redirected path is looped around the reversing device in the turning bar floor 3 or 4 and guided on the lower turning bar 2, wraps around the lower turning bar. 2 and runs while maintaining the conveying direction F of the incoming web but with interchanged top and bottom of the turning bar floor 3 or 4.

For the transfer of the turning configuration of the Fig. 3 in the reciprocating configuration of Fig. 9 only the upper turning bar 1 must be folded, while the lower turning bar 2 maintains its position including orientation. The position of the upper turning bar 1 in the reciprocating configuration corresponds to the position in the turning configuration of FIG Fig. 6 , Accordingly, for the upper turning bar 1, the same handles and motor adjustments as in the transfer from the turning configuration of Fig. 3 in the turning configuration of Fig. 6 performed.

The configuration of Fig. 10 will be out of the configuration of Fig. 3 obtained by the fact that the upper turning bar 1 is simply offset parallel to itself, while the lower turning bar 2 their in the configuration of Fig. 3 retains the assumed position. The offset movement of the upper turning bar 1 is performed without unhooking the turning bar 1. The parallel offset is thus effected solely by the adjusting device 19, 20. Of course, it must be ensured that the second turning bar holder 12 can not jam during the displacement movement. Instead of causing the parallel offset by means of the adjusting device 19, 20, the turning bar 1 concerned could, however, also be released manually from the first turning bar holder 11a, then manually adjust the first turning bar holder 11a by means of the adjusting device 19, 20 and the second turning bar holder 12, and finally the turning bar 1 again manually connected to the located in the new position first turning bar holder 11a. In the case of a parallel offset, either an automatic / manual or a fully automatic adjustment can thus optionally be undertaken. The fully automatic adjustment is preferred for the parallel offset.

The embodiment shows how a simple and therefore inexpensive turning bar arrangement can be created by a combination of manual and automatic adjustment made by means of adjusting motor, which can be configured much more convenient and in a shorter time compared to a purely manual folding the turning bars. Setting up for a new production becomes too comparatively significantly reduced costs. A cost reduction could be achieved by replacing each of the variable displacement motors 20 with a hand crank. Such a purely manual solution, however, can easily lead to a significant extension of the time required for the transfer, especially if in a set up several turning bars must be transferred.

Reference numerals:

1

turning bar

2

turning bar

3

Turning bar floor

4

Turning bar floor

5

Blasluftlöcher

6

air ventilation

7

connecting element

8th

-

9

-

10

frame wall

11a

first turner bar holder

11b

first turner bar holder

11c

first turner bar holder

12

second turner bar holder

13

admission

14

blocking element

15

-

16

mudguard

17

blast air

18

air ventilation

19

adjusting spindle

20

adjusting

21

first guide

22

second leadership

Claims (27)

1. A device for deflecting a web, comprising:

   a) at least one reversible turning bar (1; 2);

   b) a first turning bar holding means (11a, 11b; 11a, 11b, 11c) which is connected to one axial end of the turning bar (1; 2);

   c) a second turning bar holding means (12) which is connected to the other axial end of the turning bar (1; 2);

   d) a first guide (21) along which the first turning bar holding means (11a, 11b; 11a, 11b, 11c) is movably guided;

   e) a second guide (22) along which the second turning bar holding means (12) is movably guided;

   f) and an adjusting means (19, 20) by means of which at least one (11a, 11b; 11a, 11b, 11c) of the turning bar holding means can be adjusted along its guide (21) in order to position it (11a, 11b; 11a, 11b, 11c) for reversing the turning bar (1; 2),

   g) characterised in that the connection between the turning bar (1; 2) and the first turning bar holding means (11a, 11b; 11a, 11b, 11c) can be manually released and manually established, in order to be able to manually detach the turning bar (1; 2) from the first turning bar holding means (11a, 11b; 11a, 11b, 11c) during reversing and to manually connect the turning bar (1; 2) to the positioned first turning bar holding means (11a, 11b; 11a, 11b, 11c).
2. The device according to claim 1, characterised in that the adjusting means (19, 20) comprises an adjusting motor (20) in order to motorically adjust the turning bar holding means (11a, 11b; 11a, 11b, 11c) which can be adjusted by means of the adjusting means (19, 20).
3. The device according to any one of the preceding claims, characterised in that the adjusting means (19, 20) comprises an adjusting spindle (19) with which the turning bar holding means (11a, 11b; 11a, 11b, 11c) which can be adjusted by means of the adjusting means (19, 20) forms a screw joint, along the joint axis of which the turning bar holding means (11a, 11b; 11a, 11b, 11c) is adjusted.
4. The device according to any one of the preceding claims, characterised in that the connection between the turning bar (1; 2) and the first turning bar holding means (11a, 11b; 11a, 11b, 11c) is a locking connection or a snap-on connection.
5. The device according to any one of the preceding claims, characterised in that a receptacle (13) is formed on one (11a, 11b; 11a, 11b, 11c) of the turning bar (1; 2) and the first turning bar holding means (11a, 11b; 11a, 11b, 11c), and a connecting element (7) which can be accommodated in the receptacle (13) is formed on the other (1; 2) of the turning bar (1; 2) and the first turning bar holding means (11a, 11b; 11a, 11b, 11c), wherein the receptacle (13) is open towards one side, such that the connecting element (7) can be pivoted into and out of the receptacle (13).
6. The device according to the preceding claim, characterised in that the receptacle (13) is open towards a side such that the connecting element (7) can be pivoted into and out of the receptacle (13) in or parallel to the plane of the web which is being fed into the device.
7. The device according to any one of the preceding two claims, characterised in that a blocking element (14) is movably connected to a part of the first turning bar holding means (11a, 11b; 11a, 11b, 11c) or the turning bar (1; 2) which forms the receptacle (13), and in that the blocking element (14) is tensed by means of an elasticity force into a blocking position in which it protrudes into or through the receptacle (13) on the open side of the receptacle (13) when the connecting element (7) is accommodated in the receptacle (13), and in that the blocking element (14) is shaped such that it is pressed out of the blocking position, against the elasticity force, by the connecting element (7) pivoting in, in order to enable the connecting element (7) to pivot in without additional hand movements, but blocks the connecting element (7) when it is accommodated in the receptacle (13) in order to prevent the connection between the turning bar (1; 2) and the first turning bar holding means (11a, 11b; 11a, 11b, 11c) from being inadvertently released.
8. The device according to any one of the preceding claims, characterised in that one (12) of the turning bar holding means is fixed along its guide (22) via the turning bar (1; 2) by the other turning bar holding means (11a, 11b; 11a, 11b, 11c) which is positioned by means of the adjusting means (19, 20), when the turning bar (1; 2) is connected to the other turning bar holding means (11a, 11b; 11a, 11b, 11c).
9. The device according to any one of the preceding claims, characterised in that one (12) of the turning bar holding means can be shifted along its guide (22).
10. The device according to the preceding claim, characterised in that the turning bar holding means (12) can be freely shifted.
11. The device according to any one of the preceding claims, characterised in that at least one (12) of the turning bar holding means is narrowly guided on its guide (22) as it slides.
12. The device according to any one of the preceding claims, characterised in that the turning bar (1; 2) can be pivoted about two axes (H, V) relative to the second guide.
13. The device according to any one of the preceding claims, characterised in that the turning bar (1; 2) is mounted by means of the second turning bar holding means (12) such that it can be pivoted about an axis (V) which points perpendicular to the plane of the web which is being fed into the device, in relation to the position which the turning bar (1; 2) assumes when it is connected to both turning bar holding means (11a, 11b, 12; 11a, 11b, 11c, 12).
14. The device according to the preceding claim, characterised in that the turning bar (1; 2) is connected to the second turning bar holding means (12) such that it can be pivoted about the axis (V).
15. The device according to any one of the preceding claims, characterised in that the turning bar (1; 2) is pivotably mounted by means of the second turning bar holding means (12), such that it can be pivoted out of the plane of the web which is being fed into the device, when the connection to the first turning bar holding means (11a, 11b; 11a, 11b, 11c) is released.
16. The device according to the preceding claim, characterised in that in order to acquire the ability to pivot out of the plane of the web, the second turning bar holding means (12) is mounted such that it can be pivoted about an axis (H) which points in the same direction as its guide (22) or in a direction parallel to its guide (22).
17. The device according to the preceding claim, characterised in that the second turning bar holding means (12) and its guide (22) form a rotary joint.
18. The device according to any one of the preceding claims, characterised in that the turning bar (1; 2) is mounted by means of the second turning bar holding means (12) such that it can perform a superimposed pivoting movement about two mutually perpendicular axes (H, V) when the connection between the turning bar (1; 2) and the first turning bar holding means (11a, 11b; 11a, 11b, 11c) is released, wherein one (V) of the two axes (H, V) points vertically with respect to the plane of the web which is being fed into the device, and the other axis (H) points in or parallel to the plane of the web which is being fed in and transverse to the conveying direction of the web, in each case in relation to the position which the turning bar (1; 2) assumes as long as it is connected to both turning bar holding means (11a, 11b, 12; 11a, 11b, 11c, 12).
19. The device according to any one of the preceding claims, characterised in that the first turning bar holding means (11a, 11b; 11a, 11b, 11c) comprises at least two first turning bar holders (11a, 11b; 11a, 11b, 11c), at least one of which is movably guided along the first guide (21) and coupled to the adjusting means (19, 20) such that it can be adjusted along the first guide (21) by means of the adjusting means (19, 20) and positioned for reversing the turning bar (1; 2).
20. The device according to the preceding claim, characterised in that the other of the at least two first turning bar holders (11a, 11b; 11a, 11b, 11c) is also guided along the first guide (21) and coupled to the adjusting means (19, 20) such that it can be adjusted and positioned along the first guide (21) by means of the adjusting means (19, 20).
21. The device according to the preceding claim, characterised in that the adjusting means (19, 20) couples the at least two first turning bar holders (11a, 11b; 11a, 11b, 11c) to each other such that they are jointly adjusted by means of the adjusting means (19, 20).
22. The device according to any one of the preceding three claims, characterised in that the turning bar (1; 2) is detached from one of the at least two first turning bar holders (11a, 11b; 11a, 11b, 11c) during reversing and is connected to the positioned other one of the at least two first turning bar holders (11a, 11b; 11a, 11b, 11c).
23. The device according to any one of the preceding claims, characterised in that the device comprises an additional turning bar (1; 2) which together with the at least one reversible turning bar (1; 2) forms a pair of turning bars (1; 2) for turning the web.
24. The device according to the preceding claim, characterised in that the additional turning bar (1; 2) is a reversible turning bar (1; 2) in accordance with any one of the above claims.
25. The device according to any one of the preceding two claims, characterised in that the device comprises a number of the pairs of turning bars (1; 2).
26. A method for setting-up a device in accordance with any one of the above claims, wherein the following steps are performed in order to reverse the at least one reversible turning bar (1 ; 2):

    a) manually detaching the turning bar (1; 2) from the first turning bar holding means (11a, 11b; 11a, 11b, 11c);

    b) manually pivoting the turning bar (1; 2) which is detached from the first turning bar holding means (11a, 11b; 11a, 11b, 11c) and still connected to the second guide (22) via the second turning bar holding means (12);

    c) manually adjusting one (12) of the turning bar holding means along its guide (22);

    d) adjusting the other turning bar holding means (11a, 11b; 11a, 11b, 11c) into a new position by means of the adjusting means (19, 20);

    e) and manually connecting the turning bar (1; 2) to the first turning bar holding means (11a, 11b; 11a, 11b, 11c) when the turning bar holding means (11a, 11b; 11a, 11b, 11c) which is adjusted by means of the adjusting means (19, 20) assumes the new position.
27. The method according to the preceding claim, characterised in that the turning bar (1; 2) is connected to both turning bar holding means (11a, 11b, 12; 11a, 11b, 11c, 12) during an offset movement which is performed for a parallel offset.

Images