DE10336757A1 - Method for folding optionally overlapping sheets comprises gradually increasing folding force by reducing nip between folding rollers and then activating e.g. vacuum rollers - Google Patents

Abstract

The method for folding optionally overlapping sheets (13) comprises a first stage in which the nip between the folding rollers (1, 2) is adjusted so that the sheets are not compressed as they are fed into the pocket (7) and up to the stop (12). The nip is then reduced to give frictional coupling between the rollers and sheets. Finally friction increasing conveyors, vacuum rollers, etc. are activated to increase the force for folding the sheets. An independent claim is included for a machine for use in the method.

Description

The present invention relates to a method for improving the performance and / or quality of a pocket folder by adjusting the folding gap width of the feeding folding rollers 1 + 2 in sub-phases of a continuous folding operation falzzyklusabhängig is increased or decreased, and a corresponding device for applying the method. The method is not only suitable for folding conventionally fed sheets 13 (Eg paper sheet), but in particular also for folding of an imbricated overlapping supplied sheet 13 ,

In a subdividable into different sub-phases continuous folding cycle in a pocket folder conventional design, the arc 13 into the pocket with a running speed matched to the paper texture 7 promoted. When abutting the front edge of the sheet on the pocket stop 12 (Beginning of the compression phase) and at the same time advancement of the bow 13 forms between the three folding rollers 1 + 2 + 3 (where the compression phase with the entry of the bow 13 in the folding gap of the rolls 2 + 3 ends) the fold. The arc 13 leaves the folding pocket 7 and the next sheet is in the fold pocket 7 guided.

In Pocket folders have become increasingly efficient in recent years. This affects both the pure folding speed, as well as the handling, with regard to fault monitoring and control improved to a lower susceptibility to interference and higher continuity out has been.

It But there are still disturbing Influences that have a performance-limiting effect.

Even if the bows 13 However, when fed into the fold pocket, they are subject to different frictional forces and slippage as a result of tolerance variations, which explains the reason for the orientation drifting off.

For example, the feeding folding rollers have 1 + 2 during the transport of the bow 13 to the pocket stop 12 (In particular, at higher speeds) in so far an unfavorable influence, as the sheet tends to drift from an ideal entry angle, because this by tolerance variations in paper thickness and tolerance variations of the seam gap due to Falzwalzenradiustoleranzen the feeding folding rollers 1 + 2 not unaffected in the fold pocket 7 enters.

It is further observed that ideally oriented arcs 13 (Setting angle of the alignment ruler at 90 ° angle to the feeding folding rollers 1 + 2 ) from the feeding rollers 1 + 2 are influenced less by lateral drift, as less precisely aligned bow 13 , If the adjustable angle, however, chosen greater than 90 °, it is favorable that results in the folding pocket 7 incoming bow 13 from the feeding folding rollers 13 pressed against the Anlagegelineal and thus (against the investment ruler supporting) less laterally "danced", but it also comes to a (at least minimally) crooked folding result.

It is even worse if the angle is less than 90 °, because the arc 13 then from the feeding folding rollers 1 + 2 is pulled away from the investment ruler, which is just because so bad, because this (bow 13 ) then no lateral support more and the aforementioned variations in material thickness, and minimal Falzspaltweitenschwankungen lead to a very uneven folding result, since these fluctuations are no longer intercepted by the investment terminal.

Another observation in the daily folding practice is that the uniformity of the folding gap width of the feeding folding rollers 1 + 2 , which should at least theoretically be the same width over the entire width, also of great importance for a uniform shrinkage of the bow 13 in the fold pocket 7 and thus for a uniform angle accurate folding result.

In fact, it can also be observed here that a theoretically ideal setting leads to a proper result. Is the Falzwalzenspalt the feeding folding rollers 1 + 2 but on the side with the investment ruler set a little narrower than on the opposite side, it comes to even more stable (in terms of uniformity of the folding result) results, as with uniform fold gap, since the incoming bow 13 By the greater slip on the, the investment ruler opposite side and the more intense adhesion on the side with the investment ruler is basically stronger pressed against the investment ruler. This then leads to the fact that, due to the increased contact pressure against the investment ruler, the variations in lateral drift resulting from the material and seam-gap fluctuations no longer appear as much as when the folding seam width of the feeding folding rolls is set uniformly 1 + 2 , The folding result is more stable.

Accordingly unsatisfactory are the folding results when the folding gap width of the feeding folding rollers 1 + 2 insofar as it is not uniform, than that the seam gap on the side with the investment ruler is set further than on the opposite side. The incoming bow 13 is pressed less against the investment ruler and can more easily drift sideways from the investment ruler, which is just as observable and leads to uneven folding results.

Consequently, experienced operators pay as much attention as possible that in the sense of uniform folding results, especially at high production speeds, the inlet angle is never set below 90 ° as possible and that the folding gap between the feeding folding rollers 1 + 2 never set as close to the opposite side of the investment ruler as on the side with the investment ruler.

Experienced experts therefore generally tend, in the sense of the greatest possible uniformity, to always set the entry angle always slightly above 90 ° and the folding gap width between the feeding folding rollers 1 + 2 on the side with the investment ruler set a little narrower, so that the risk of drifting in the bow standing 13 basically pressed a little more firmly against the investment ruler and thus runs smoothly and results in more uniform folding results. The resulting angle errors in the folding result are then accepted according to the motto "rather even something wrong, as uneven and sometimes even straighter", or it will be the pocket ashes 7 for the purpose of compensating the angular error opposite skewed, which in terms of folding technically equally less ideal, but daily practice and unsatisfactory.

Furthermore, it can be observed that in the context of performance optimization, the distances between the sheets to be folded have been achieved 13 with great technical effort to shorten ever further.

It would be even better, if you use the folded sheets 13 time could be even closer, without increasing the speed of the pocket folder. But even closer timing would mean that the bows 13 when entering touch or even overlap, which leads to disturbances, because the folding gap width (Falzwalzenabstand) of the feeding folding rollers 1 + 2 , is set to the simple strength of an incoming bow and not to the double product thickness resulting from the overlap.

The feeding folding rollers 1 + 2 theoretically must be accurate to the strength of the bow to be recovered 13 be adjusted (in Folgefalzwerke on the strength of the supplied, already partially folded sheet) as they are the bow 13 in the entire width evenly with slight pressure capture and promote. But you can dodge against spring pressure, so that no disturbances occur when the gap is set a bit too tight. The correct folding roller adjustment and thus the uniform, resilient pressure are very important for achieving a straight sheet transport and a precise folding.

The reason for this is that paper is yielding to a certain degree and that between two folding rollers (so, for example, the feeding folding rollers 1 + 2 ) Depending on the pressure a more or less large slip compared to the peripheral speed of the folding rollers occurs. Is this different across the width of the bow 13 , he goes (of the aforementioned, umständehalber, because wanted, minimal, the bow against the investment ruler pressing misalignments apart) forcibly wrong and then folded wrong.

If one were to set the folder gap, for example, to double or even greater paper thickness, then the incoming sheet would 13 although from the conveyor belt of Ausrichtisches 11 (or eg an inclined roller conveyor table) up to the stop 12 the folding pocket 7 transported, the frictional engagement for compression but would be missing, so that there is no desired folding.

At this setting, the bow would be 13 when entering the folding pocket 7 with respect to the inlet angle but less, or not warped, since the effects described above, the lateral drifting of the sheet 13 can lead, due to the low or ideally lack of frictional force between appropriately set retracting folding rollers 1 + 2 and the folded sheet 13 not even arise and can affect it unfavorably.

This applies to a correspondingly further adjustment of the Falzwalzenspaltes between the feeding folding rollers 1 + 2 even for overlapping bows 13 if the Zuförderakt is chosen so narrow that the arc form a scale flow.

It Although there are many things, also automated setting systems for adjusting the roll spacing (Folding gap), but they are all in common that they of the repression of the passing paper, with a fixed distance and an uncontrolled pressure, because of a firm attitude, work.

If this fixed setting would be much too tight, because, for example, when setting to simple blade thickness, two overlapping sheets must squeeze through this narrow folding gap, correspondingly even greater fluctuations or disturbances are to be expected, which is why an overlapping, imbricated stream like feeder made no sense.

Of the Invention are now based on the two tasks, a method and to provide a corresponding device which in a continuous (not e.g. interrupted for the purpose of sheet collecting etc.) folding both to lower disturbance forces in refers to the lateral drifting of the incoming bow, as also the trouble-free Run in overlapping Folded sheet (with extended folder gap) allows, without in the upsetting Phase of uninterrupted folding process too little frictional force for the seaming to have.

The two independent aspects of the problem underlying the invention are by the method of claim 1 according to the invention both, by falzzyklussynchrones further and Engerstellen the Falzwalzenabstandes the feeding folding rollers 1 + 2 by means of at least one folding cycle-dependent control, which opens the folding gap width in non-upsetting phases (or at least in phases of the non-upsetting phases) of a continuous folding operation by means of at least one opening device and (at least) in the upsetting phase by means of at least one control operated closing device to eg the usual degree (Eg simple blade thickness at hitherto unfolded folded sheet 13 or simple product thickness in prefolded sheets 13 in a follower) is solved.

aufgrung from e.g. inertia from e.g. the control / regulation, the inertia of the material to be folded, etc., Even if in this application, in principle, only the "upsetting phase" is mentioned according to the invention WHILE the upsetting phase of the folding gap to be reopened, or the falzkrafterhöhung means be deactivated if due to the material condition, etc. already a shorter one Shut down the folding gap, or increase the driving force for seaming is sufficient.

The extent to which the Falzwalzenabstand (Falzspaltweite) should be increased, according to the invention need not be large. For example, just a few hundredths of a millimeter are more than a simple folded sheet, to the unfavorable influences of the feeding folding rollers 1 + 2 during the entry of the bow 13 in the fold pocket 7 to reduce. Be bow 13 supplied overlapping, for example, already sufficient to enlarge, for example, twice the strength of the incoming Falzgutes.

It makes sense, but also quite a triple or even more folding gap, so even overlapping bow 13 in the non-upsetting phases of the folding process as possible not in frictional engagement with the feeding folding rollers 1 + 2 devices.

It is important, however, to open the folding gap preferably precisely parallel (ie uniformly across the width) and to lower the closing process precisely simultaneously and equally on both sides, even if it is not specifically pointed out in the exemplary embodiments, so that the frictional connection is even across the width of the bow 13 takes place and this particular is not warped during the closing process.

The possible concern that the folded sheet 13 without tight adjustment of the feeding folding rollers 1 + 2 not up to the bag stop 12 penetrates, is unfounded insofar as that the necessary force from the alignment table 11 (or feed, Schrägrollförderisch etc.) goes out.

For this purpose, in this context, if necessary, the Antiebskraft the Ausrichtisches 11 or any other feed device (eg inclined roller conveyor table in a follower), eg in which the sheet to be supplied 13 by additional and / or heavier balls, for example, on the opposite side of the investment ruler, (or additional alternative, possibly amplified alternative drive sources, eg also on the opposite side of the investment ruler) on a conveyor belt or rolls or zB au additionally mounted transport roller etc. is pressed on the opposite side of the investment ruler, or eg the vacuum performance of a feeding vacuum belt is increased and / or a wider vacuum belt is used, and / or another, (eg obliquely or not obliquely aligned) vacuum belt on the opposite side of the investment ruler is attached.

The Enlarge the Folding gap width (distance of the rolls) should of course preferably over the entire Width of the rolls are uniform, which is why this e.g. in both lateral bearings (e.g. Rolling lever) evenly raised or should be lowered.

Also conceivable (although less meaningful) is the possibility of the roll axes are not in height but laterally (for example horizontally achsabstandvergrößernd) too move.

In the case of reduced demands, for example, if overlapping feeding is dispensed with and the measure is better in the bag 7 should serve (but also, if not ideally, if necessary, with overlapping feeder) could also "for emergencies" on only one side of the roll holder (lever, etc.) raise and lower, preferably then on the opposite side of the investment ruler and then eg with a larger stroke.

A synchronous linkage a folding gap width control (or, or possibly also and falzkraftverstärkender Means) according to the invention by controllers a variety of construction, such as are listed in the claims, respectively.

By using an electronic control can be eg quite simple, for example by photoelectric sensors (eg on the folding pocket 7 , eg below the pocket stop 12 attached) or electronic odometer (eg incremental encoder and computer, etc.) achieve a falzzyklusabhängige combination of folding phase and erfingunsgemäßen opening and closing devices or Falzkrafterhöhender means.

For example, the fact that one at the folding pocket 7 below the pocket stop 12 mounted photocell, the incoming arch 13 recognizes, by means of a simple circuit (possibly even a simple relay that attracts as long as the photocell "paper sees") as long as a frictional engagement must be an otherwise activated opening device turns off, for example, one or more electromagnets (or eg Opening devices), for example, on two-armed, the folding roller rotatably / pivotally mounted lever arms is / are attached, (preferably on the side on which the pressure / return spring is usually mounted and preferably now with an extended lever arm. (In which the return / pressure springs in the non-activated state of the opening device are also the delivery device, so with very little effort in the phases where no frictional engagement with the retracting facile rolls 1 + 2 is necessary, by means of simple electromagnets on (each) a lever arm a small stroke on the folding gap between the feeding folding rollers 1 + 2 exercised (and this thus increased beyond the normal setting out), but in the moment where the friction is necessary (the Lichschranke recognizes the arc 13 below the pocket stop 12 ), the opening device is deactivated (until the bow 13 for the light barrier "is gone again") and there is a regular adhesion of the feeding folding rollers 1 + 2 with the bow 13 at the crucial moment of seaming. If you need, why always, temporarily a conventional working pocket folder, you just need to turn off this opening device. Of course, a device designed in this way can also have a regular fold gap width setting (eg of conventional design, eg with material pattern clamping device).

But it is also possible that, for example, the upper feeding folding roller 1 rigidly between "open" and "closed" alternates, while the lower feeding folding roller 2 a (preferably, as usual on each side of the roller a) Faltspaltweiteneinstellvorrichtung (eg of conventional design), or vice versa, ie the upper retracting folding roller 1 is set to the desired folding gap width dimension and the lower feeding folding roller 2 opens and closes depending on the folding cycle.

However, a mechanical, (ideally self-regulating) control / mechanics, where, for example, the lower retracting folding roller appears to be particularly interesting 2 by appropriate storage / suspension (such as in 3 shown schematically) at the same time the control and Falzspalterweiternde and under the influence of, for example, at least one oppositely acting return spring 15 also falzspaltrotuzierende opening and closing device is. The control / regulation takes place by the lower feeding folding roller 2 by displacing the between the folding rollers 2 + 3 entering fold sheet 13 temporarily preferentially diagonal (at the same time to the right, as well as down) evades (as long as the folded sheet 13 between the folding rollers 2 + 3 is), resulting in an increase in the folding gap between the feeding folding rollers 1 + 2 results.

Likewise, the opening and closing of the folding gap can be done in a variety of ways, both in terms of the nature of the drive of opening and closing devices, as well as where they attack, whether at the lower retracting folding roller 1 or the upper feeding folder 2 or both feeding rabbets 1 + 2 ,

The Key to this invention is in the synchronous linking of Folding cycle and folding gap width control by means of a controller to see!

The two sub-tasks of the invention are based on the deliberate compilation of the seam gap width to a degree with adequate frictional force in (at least) the upsetting phase and opening of the seam gap width in non-upsetting phases (at least in partial phases of the non-upsetting phases). in which the foldsheet 13 unhindered (even if subsequent folds already overlap) in the folding pocket 7 can come in, solved.

This is not possible with machines of conventional design! Although there are in the prior art Taschenfalzwerke, for the purpose of interrupting the folding process (for collecting folded sheets) the folding gap between the einzie hanging folding rollers 1 + 2 zoom and then reduce this fold gap again for the purpose of restarting the folding process, but this does not correspond to the intention of Taschenfalzverfahrens my application, because in contrast to my Taschenfalzverfahren before, the folding (folding cycle) possible not to interrupt, although the Folding gap of the feeding folding rollers 1 + 2 in sub-phases of the folding process in which he does not have to be put together, not compiled compelling, but just to interrupt without the folding process can be opened, resulting in a more precise and possibly even overlapping feeding the signatures 13 allows.

One folding method according to the invention, and a corresponding device for using this method (according to claims 1 + 2) according to the state of the art yet unknown, although it is now also pocket folders with e.g. electrically, pneumatically etc. adjustable folding gap width adjustment devices which, for example, by means of cascaded pneumatic cylinders etc., also fast Enable regular times, but so far not yet in the sense of my hereby pending Taschenfalzverfahrens falzzyklusabhängig are controlled in such a way that they as described, the folding gap width within and during one uninterrupted folding cycle to narrow the folding gap Close the fold, but on the other hand within the same folding cycle for reduction unwanted, previously accepted disturbing influences (e.g. a smooth overlapping Respectively prevented) increase the folding gap width.

For the most diverse Folding tasks arise depending on the setting or design of the controller diverse further possibilities for improvement across from conventional Crimping with fixed fold gap width, of which some below should be called.

It is, for example (as already mentioned above) waiving overlapping feeding by means of falzzyklisch synchronous opening and closing of the feeding folding rollers 1 + 2 it is possible to feed individual folded sheets in the form that the disturbing forces with respect to lateral drifting, as can be observed with fixed roll adjustment, are almost completely eliminated by the sheet 13 with the folded folding nip between the feeding folding rollers 1 + 2 in the fold pocket 7 is transported and the adhesion between the bow 13 and the feeding folding rollers 1 + 2 by narrowing the folding gap width of the feeding folding rollers 1 + 2 later, for example, then takes place when the bow 13 already largely in the fold pocket 7 is introduced.

Another possible application of the device according to the invention results in dispensing with the first of the two aspects of the invention underlying aspects, reducing the disturbance forces with respect to the lateral drifting of the incoming sheet. Thus, it is also possible according to the invention, the folding gap between the feeding folding rollers 1 + 2 to increase by means of appropriately designed control only in the phase of the folding process, in which the two overlapping sheet parts of the overlapping supplied sheet 13 together between the feeding folding rollers 1 + 2 are located.

This is meaningful, for example, if there is only slight overlap and / or if the bow is to be deliberately guided as long and / or as intensively as possible, eg, if the bow 13 consciously not only in the compression phase under adhesion with the feeding folding rollers 1 + 2 , but over a larger area / distance in the frictional connection with the feeding folding rollers 1 + 2 should stand.

For example by placing in front of the feeding folding rollers 1 + 2 An opacity control photocell is attached to the bow 13 rayed. If, due to poorer visibility, it detects that there are two sheets (beginning of the sheet of the next sheet lies on the sheet end of the incoming sheet 13 ) partially overlap, this photocell triggers by means of a controller (eg relay, possibly with delay circuit, etc.) temporarily the falzzyklusabhängige Falzspaltöffnungsvorrichtung from, which is the folding gap between the feeding folding rollers 1 + 2 opens and this then eg by means of correspondingly oppositely acting return springs, or eg by means of a delivery device back to normal (eg simple material thickness) closes.

As an alternative solution for controlling / regulating the nip width of the feeding folding rollers 1 + 2 (or optionally as a supplement to the control / regulation of the nip width of the feeding folding rollers 1 + 2 ), the Falzwalzenspalt can also be set more than usual overall or the slip, for example by reducing the contact pressure of the feeding folding rollers 1 + 2 increases and thus the frictional engagement of the pull-in folding rollers 1 + 2 with the bow 13 be reduced.

But then for the compression and fold formation (because the frictional force resulting from the folding gap width is no longer sufficient for the fold formation) sufficient driving force on the sheet 13 To act here is by means of folding cycle-dependent control additional folding force, for example by means of additional falzzyklisch activated transport (eg rubbing transport devices) on the signatures 13 brought.

The advantages of the invention according to the godparents Claims 1 to 67 are, firstly, that a folded sheet 13 unhindered with respect to lateral drifting in the folding pocket 7 can run in (because this is then more under the directionally higher quality drive influence of Ausrichtisches 11 as under the fluctuating influence of the feeding folding rollers 1 + 2 ) and on the other hand, that overlapping incoming (because of the previous method too tightly fed) bow 13 do not lead to disturbances, but according to 2a to 2f (For simplicity, only shown with three rollers) ideally already in the folding pocket 7 come in while the previous one still leaves!

During the opening and closing of the roll gap (Falzwalzenspalt) a straighter curving of the bow 13 and thus allows a higher folding precision, increases the overlapping feeding the signatures 13 at the same machine speed, the performance.

It let yourself thus at elevated Achieving a better quality at the same time!

Furthermore, the precise alignment of the supplied sheet 13 not as before, by a rigid attitude and the resulting drifting, deteriorated.

It is therefore also possible, alone in the sense of increased quality (absence of the disturbing influences of the feeding folding rollers 1 + 2 ) with the device according to the invention regularly folded sheets 13 nacheininder and not overlapping feed. The higher quality results when, for example, an unfolded sheet 13 according to the scheme set forth in claim 6 with increased folding gap width in the folding pocket 7 enters and later, at the latest at the beginning of the upsetting phase, in frictional engagement with the feeding folding rollers 1 + 2 comes.

Consequently, the investment ruler with respect to the entry angle for the first time actually completely free (and preferably adjustable according to the actual requirements, such as compensation of an oblique print image, etc.) and can then be set almost arbitrarily smaller or larger than 90 °, since the arc 13 neither pulled away from the investment ruler, nor pressed against it too strong, so that it could lead to unwanted wrinkling, since the frictional engagement of the feeding folding rollers 1 + 2 to the incoming bow 13 eg only at the moment takes place in which this, after trouble-free feeding preferably to the pocket stop 12 (or just before) has penetrated and only now the feeding folding rollers 1 + 2 if they can no longer do any harm in terms of lateral drifting, they will be assembled to form a fold.

Thus, the folding gap width of the feeding folding rollers must 1 + 2 also not necessarily be set as precisely as previously required, especially when the bow 13 completely or almost completely until the pocket stop 12 is transported before it is in frictional engagement with the feeding folding rollers 1 + 2 comes. A less precisely set seam gap width is then, if at the decisive fold-forming moment enough force for a fold on the sheet 13 acts, less disturbing, since the bow in the so sensitive in terms of lateral drifting phase of being transported into the folding pocket 7 preferably not in frictional engagement with the feeding folding rollers 1 + 2 device.

Therefore This method is also particularly suitable for automated folding gap width adjustment devices, which then may not necessarily be as precise and expensive as so far.

On the other hand, it is now much more possible, the folding gap between the feeding folding rollers 1 + 2 actually set in parallel, as can be dispensed with by the uneven setting effect of better investing on the investment ruler, since the bow 13 as long as he is not in frictional engagement with the feeding folding rollers 1 + 2 is, even from these can not be warped laterally.

In view of the fact that the seam gap preferably closes during a continuous folding operation for seaming, it is also to be expected that there will be fewer roll marks on the paper to be processed and also that the roll wear on the particularly wear-sensitive feeding fold rolls 1 + 2 less, since a part (or a large part) of the bow 13 not at all in force with the feeding folding rollers 1 + 2 comes and thus less slip and friction wear results.

by virtue of that the Roller adjustment according to the invention rather in The upsetting phase is important, it is expected that the pocket folder good-naturedly (for example, also opposite low incorrect settings, etc.) behaves.

As well is therefore to be expected that even folding rollers, the one have certain roll wear, for the reasons mentioned above still decent and definitely much better folding results obtain as without Falzzyklusabhängiges opening and Shut down the folding gap width.

If as control an electronic control is selected, also possibly existing sheet sensors be included, which saves costs.

Is it unintentional to distance fluctuations in the supply of signatures 13 , so unintentionally lead to early coming bow 13 only to a greater overlap and not necessarily mandatory to a fault or machine shutdown, as can be observed in previous machines.

According to the invention, and allowed to the special features of the invention but also like switched off be, or otherwise functionally limited, e.g. for certain Application (s) to a pocket folder of conventional design and accordingly conventional Fall back on folding method to be able to.

Ever The technology lends itself to being reduced by controlling frictional forces in non-upsetting phases excellent for use in conventionally feeding Machines, because the folding precision due to the fact that angle-worsening influences when using the control / regulation according to the invention reduced are much higher is.

For extreme processing speeds (eg for very small folders), which would overwhelm the actuator, this should possibly be turned off, so that in such cases unregulated and folded conventionally, possibly also by means of an automatic, in which, for example, a computer known upon reaching him maximum opening and closing frequency of the opening and closing device (s), for example, increases the arc distance and / or limits the machine speed and / or conventional feeding, dH supply of sheets 13 not overlapping, but switched one after the other.

The degree of overlap and the choice of the control diagram (how much or little of the nip in the phases of the non-upsetting phase is open or closed), according to the invention completely free and adaptable at the discretion of Maschineneinrichters eg the concrete requirements or Gege benheiten a folder application. Consequently, there are both very small overlaps with appropriate freedom in the choice of the control diagram (eg according to the patent claims 3 to 7 ), as well as any mediocre overlap widths, up to a very extreme overlap (from eg to approximately 50%), where only the part of an arc 13 remains uncovered by the subsequent sheet, in which then actually the frictional engagement must be done to buckling, which is why in this case the diagram of claim 3 then recommends, after which the folding gap between the feeding folding rollers 1 + 2 is preferably compiled only in the upsetting phase.

With full-size sheets and consistent application of the invention in full, overlaps of, for example, 35% and more between each individual sheet are normally easily achieved 13 and the respective subsequent bend, resulting in a very significant increase in performance.

Another advantage of the invention is the fact that the bow 13 when feeding into a arranged at 90 ° angle Folgefalzwerk quiet "around the corner", since the fast braked during this process sheet that is accelerated immediately side, with the same folding performance of the follower drive overlapping at a much lower speed must be accelerated laterally.

Consequently, but also with unchanged high lateral acceleration significantly more arc 13 , are supplied overlapping, without that a possibly critical acceleration / Geschwindigikeit should be further increased.

In addition, the angle between the adjustable pocket stop 12 and the adjustable investment rake angle now consistently be always 90 °, since there are no more false positions must be compensated and the other hand, an entry angle between the investment ruler and the folding rollers for the first time can easily have less than 90 °.

presumably However, there are further advantages due to a folding cycle-dependent controlled folding gap opening. and closing device.

The invention will be explained in more detail by means of exemplary embodiments. Out of that and out of the 2 and 3 There are further features, details and advantages.

The Drawings show:

1 Side view of a conventional Taschenfalzwerks with reference numerals.

2 Folding scheme very strong (to illustrate possibly exaggerated strong) overlapping supplied folded sheet in a, for the sake of simplicity illustrated with only three folding rollers Taschfalzwerk, in the order: 2a . 2 B . 2c , 2d ,

2a shows one in the folding pocket 7 incoming folded sheet 13 whose previous sheet just leaves the folder and its subsequent sheet from the feeding folding rollers 1 + 2 not yet recorded. The folding gap between the feeding folding rollers 1 + 2 can be open.

2 B shows the beginning of the upsetting phase, with the pocket stop 12 adjacent folded sheet 13 , the previous sheet has already left the folder. The folding gap between the feeding folding rollers 1 + 2 must be compiled (eg simple product strength).

2c shows the folded sheet 13 in the phase in which he came off the folding rollers 2 + 3 is detected and the end of the sheet together with the subsequent beginning of the successor sheet between the feeding folding rollers 1 + 2 located. The folding gap between the feeding rollers should be open (eg at least twice, even better about three times the product thickness).

2d shows the folded sheet 13 whose bow beginning the folding pocket 7 leaves, while the subsequent bow already in the folding pocket 7 enters, although the bow end of the signature 13 still between the feeding folding rollers 1 + 2 is. The folding gap between the feeding folding rollers 1 + 2 should preferably still be open (eg two to three times the product strength).

3 Schematic side view of a Taschenfalzwerkes as an embodiment according to claim 11.

According to the inventive method Claim 1 are diverse design options possible. Importantly, the device as set forth in claim 2, to synchronously synchronize with the folding cycle by means of a control, thus set a narrower folding gap width in upsetting phases is when in non-upsetting phases. As previously described, is the type of control, as well as the type of technical implementation according to the invention in a variety of ways implemented.

As well There are also different according to the invention Options, the control cycle of the folding cycle-dependent folding gap opening and closing device to associate with the folding cycle.

So is e.g. according to claim 3, the control cycle of the Falzspaltöffnungs- and closing device by means of independent Control to the actual Bowing e.g. Adjust by means of falzzykluserkennender measuring means.

As well it is according to claim 4 possible, (e.g., waiving sheet-fed and / or hemming cycles) measuring means) e.g. by means of a common (preferably the time offset or time / distance offset consider Direction and / or e.g. by the bow start / bow distance rhythm with the Control rhythm of the folding gap control meaningfully coupling) control both the sheet start, as well as the Falzspaltöffnungs- or closing device to steer together.

According to claim 5 is provided the falzzyklusabhängige control (as in Seilchenspringen where two people swing a rope, and a third person, the spring jumps on the Schwingungsrythmus of the rope looking ahead at the right moment) realize so that the Falzspaltöffnungs- and closing device of an independent Control eg permanently open and close, and the bow 13 by means of a control, which is based on the control cycle of the Falzspaltöffnungs- and shooting device control, the arc 13 commences in a forward-looking manner, as was previously the case, for example, with the sword folders in mechanically controlled combination folding machines.

Depending on the intended use, type of fold, etc. and whether, or how much arc parts overlap, whether the bow 13 as possible "loosely" touched or as intensive as possible and should not get into frictional overlapping parts, and possibly depending on different control devices and types of control arise according to the claims 6 to 10 various inventive meaningful control options or control diagrams, In design of Control according to claim 6, for example, a very strong overlap of the bow is possible. Furthermore, the previously carefully aligned bow 13 before the fold so only as much as absolutely necessary "touched" and therefore can hardly "sway" out of its ideal orientation. After the fold has broken in the first folding pocket 7 The bow needs no guidance (and certainly no more drive) by the feeding folding rollers 1 + 2 ,

When designing the controller according to claim 7, the Taschenfalzwerk behaves, for example, similar to a pocket folder conventional design, without it overlapping feed to disruptions caused by too thick material because of an overlapping for this moment too narrow folding seam of the retracting Falzwwalzen 1 + 2 comes because at this moment the fold gap is extended.

When designing the controller according to claim 8, the Taschenfalzwerk behaves so that the folding gap between the retractable folding rollers 1 + 2 after folding in the first folding pocket 7 (eg by using a controller according to claim 11) until the complete entry of the sheet 13 in the feeding folding rollers 1 + 2 remains open. Regardless of how much a subsequent arc overlaps, it automatically results (with no further overlap, eg up to approx. 45% overlap), in the subsequent arc in time for hemming in frictional engagement with the feeding folding rollers 1 + 2 device.

When designing the controller according to claim 9, the Taschenfalzwerk behaves so that a bow 13 as unaffected by its previous orientation in the folding pocket 7 enters. This quite simple control behavior / control diagram, the advantage of which can be seen, for example, in a relatively quiet regulation of the seam gap width, is suitable, inter alia, for example for a non-overlapping, but higher-quality feed of the sheet 13 in the fold pocket 7 eg a combination folding machine.

to Achievement of the effect / advantages according to the invention have to the aforementioned control types / control diagrams not mandatory be used in pure form.

Further are according to claim 10 also others, not closer called control types / control diagrams according to the invention makes sense, the e.g. also combinations of the claims 6 to 9 can be called control types / control diagrams.

As already mentioned, (e.g., in the claims 1 + 2) it is already sufficient according to the invention, to compile the seam gap width in the upsetting phase alone.

claim 11 therefore provides, the composition of the folding gap exactly at the beginning of the upsetting phase.

However, since, for example, depending on the type of control / regulation of the seam gap with (eg inertia-related) delays the actual folding seam narrowing is to be expected (delayed reaction time), it is provided according to claim 12, that the compilation of the seam gap width is already triggered before the beginning of the upsetting phase in order to compensate, for example, for inertia-delayed execution of the control. This could happen, for example, that a light barrier, which triggers a falzspaltweitenverengende locking device, not directly on the pocket stop 12 but is placed appropriately deeper.

Alternatively, claim 13, intentionally to delay the triggering of falzspaltweitenverengenden locking device. This has the consequence that within a (not aborted and again inganggesetztem, but still continuous) continuous folding cycle by the minimum delay reaction time results in a very short (minimum fractions of seconds!) Alignment phase in which the arc 13 with the swing resulting from the feed against the pocket stop 12 bumps and, even before the frictional connection with the feeding folding rollers 1 + 2 takes place, unimpeded align before by the frictional engagement with the feeding folding rollers 1 + 2 the fold break occurs.

As a recommendation for the measure of the folding gap width (roll spacing) of the feeding folding rollers 1 + 2 In the upsetting phase, for example, the material thickness of the sheet to be folded 13 apply, so that a sufficient frictional connection (by frictional engagement with the feeding folding rollers 1 + 2 ) comes about. If the folder is a follower, to which already folded sheets are fed, the measure of the thickness (material thickness) of the supplied sheet is the approximate recommendation for the measure of the folding gap between the feeding folding rollers 1 + 2 ,

The folding gap dimension for the folding gap opened by means of folding cycle-dependent controlled opening device between the feeding folding rollers 1 + 2 can (in the open state), as already mentioned in the description, different and, for example, as previously described be selected.

According to the measures / features mentioned in claim 14, it is provided the bow 13 possibly with increased force to transport, so that this without friction with the feeding folding rollers 1 + 2 without problems until the bag stop 12 can reach before this with the feeding folding rollers 1 + 2 in force.

An exemplary embodiment of a mechanical device for the application of the folding method according to the invention is, according to patent document 15 in FIG 3 shown schematically.

The mechanical control works by the type of (preferably the same on both sides of the folding roller / machine) suspension of the lower retracting folding roller 2 , at one in the warehouse 10 rotatable swivel arm 9 which is at an angle α, (eg between 20 degrees and 70 degrees) on the machine body 8th is appropriate.

(As an alternative to this suspension could but based on the situation in the drawing, where the swivel arm is struck on the top right, this also posted at a similar angle bottom left and would then also the Falzwalzenspalt between the retracting rollers 1 + 2 open when the folded sheet 13 the Falzwalzenspalt between the folding rollers 2 + 3 Furthermore, according to the invention, other embodiments and suspensions / mounting of the lower retracting folding roller 2 conceivable and useful, where these due to their storage / suspension by the displacement through the bow 13 between the folding rollers 2 + 3 so evades (eg diagonal) that thus simultaneously the Faltwalzenspaltweite between the feeding folding rollers 1 + 2 increased.

The between the folding rollers 2 + 3 incoming just folded bow 13 Now press the lower retracting fold roller 2 from the folding roller 3 away and thus increases (due to the nature of the suspension conditionally) the folding gap between the feeding folding rollers 1 + 2 as long as the bow 13 between the folding rollers 2 + 3 located. Under the influence of acting in the opposite direction reset / pressure spring 15 (or preferably on each of the two sides of the machine, that is, on each of the two pivot arms mounted return / pressure springs 15 ) gives way to the lower feeding folding roller 2 after the emergence of the folded sheet 13 from the Falzwalzenspalt between the folding rollers 2 + 3 back to the upper position, which leads to the folding gap width of the feeding folding rollers 1 + 2 is reduced again and folds the next, ideally already incoming or run in next sheet.

In this embodiment, the lower feeding folding roller 2 at the same time control and also opening and closing device.

The folding roller 3 should according to claim 19 only on fairly strong springs (stronger than that of the lower retracting folding roller 2 ) or preferably be stored stationary according to claim 18, (but also, for example, in conjunction with folding gap width adjustment for adjustment to the type of paper used) in which the roller bearing (eg rotatable arm) eg by means of activatable clamping device is stationary arritized.

Or, for example, that the folding roller 3 basically stationary and only in your camp is able to rotate around its own axis attached attached.

Depending on the angle α results in a different ratio of displacement between the folding rollers 2 + 3 and the folding gap between the feeding folding rollers 1 + 2 ,

This angle α could also be variably adjustable for the purpose of adapting the control conditions / control ratios, eg for different paper, folding schemes, etc. according to claim 16, eg by means of pivotable holding arms / pivoting arms which can be locked in different positions 9 ,

For folds in which the first break is not centered, but asymmetrical, (eg the first break of a Wickelfalzes, or the first breakage of a zigzag fold, etc.) and the Falzzspalt usually between the folding rollers 2 + 3 is set for at least one other Folgefalz with simple material thickness, a particularly small angle α is recommended. At a small angle α (resulting in a sufficiently large opening of the folding gap between the feeding folding rollers 1 + 2 at a relatively low displacement in the folding gap between the folding rollers 2 + 3 results) is recommended in particular a combination (eg according to claim 42) with an additional electronic control / regulation.

For good control characteristics, the rollers (generally mounted on pivoting bearing arms) could (or should preferably) be mounted and supported at pivots selected to be biased under the influence of the displacement of paper passed therethrough 3 (minimally) dodge in the following directions:
The upper feeding folding roller 1 dodges upwards.

The lower feeding folding roller 2 deviates simultaneously to the right and down (resulting from the angle α).

The folding roller 3 is preferably stationary and does not give way (or possibly low, or eg lower than the lower retracting folding roller 2 ) out.

The folding roller 4 dodges down.

The folding roller 5 Dodge to the left.

The folding roller 6 dodges down.

any further folding rollers e.g. according to this scheme.

However, it is recommended, depending on the use and type of execution of the folding unit, according to claim 21 to provide a (preferably adjustable) limitation of the opening stroke, for example, to limit the open nip to twice or three times the material thickness. This limitation (eg limit stop 18 , if necessary by means of adjusting device, eg threaded screw, etc. 16 adjustable, according to claim 17) allows until reaching the limit stop 18 a slight opening of the swivel arm 9 ,

The swivel arm 9 hits the limit stop when striking 18 on a mechanical, limiting resistance, by the spring 17 goes out, at one end of the limit stop 18 is attached and the other end, for example, with mounting material (screw clamp, mounting bracket, casting, etc.), for example, on the machine body 8th is attached. With the help of an adjusting screw 16 eg on the machine body or on the spring 17 eg in the area in which it is suspended "supports" and their thread preferably engages in the provided with a corresponding internal thread limit stop, the spring 17 stretched as far as this depends on the desired folding gap between the folding rollers 2 + 3 makes sense.

Thus, this is also a Faltspaltweiteneinstelleinrichtung for the folding gap between the folding rollers 2 + 3 because the swivel arm 9 , the waiver of other (eg electrical etc.) aids / adjusting devices solely by the material displacement between the folding rollers 2 + 3 against the return spring 15 is moved, to some extent, by the adjustment of the adjustment screw 16 dependent degree very easily and then, depending on the hardness of the spring, these upsetting very difficult to move on. Of course, these arrangements should be equally applied to both sides of the machine / roll.

claim 22 sees a wide embodiment (Under very many according to the invention other possible embodiments in front.

To avoid that the folding rollers 2 + 3 in times / folding phases, where in between the folding rollers 2 + 3 resulting folding gap no bow 13 is too close and therefore unnecessarily rub against each other and therefore unnecessarily wear, should according to claim 23 at least one limit stop, better at least one limit stop on each side of the machine (eg 3 ), for example by means of an adjusting screw 21 , for example, at the upper end, for example by means of a mounting bracket 22 supported on the machine body and the lower end with the thread in a provided with a corresponding internal thread limit stop 19 engages, which adjusted accordingly, an unnecessary touch of the folding rollers 2 + 3 prevented.

Thus, the controller according to claim 15 is as universally applicable, it is useful according to claim 24, that the contact pressure of the swivel arm 9 according to 3 attached lower feeding folding roller 2 against the folding roller 3 is controllable. This regulation can take place, for example, in that the return spring 15 be exchanged for harder or softer springs. Or eg by the fact that on both swivel arms 9 in each case several mounts for return springs 15 are attached, of which depending on the desired contact pressure / restoring force correspondingly more or less (possibly even different strong) return springs are used.

Especially in a purely manual control / regulation is adjusting the Pressing force of Return spring to the folded material to achieve the highest Performance therefore makes sense, because different papers, in particular but different inlet widths of the material to be folded at stronger or weaker contact forces lead different control behavior of the control / regulation.

So it is advisable, for example, with narrow folding material to reduce the contact pressure, so that the swivel arm can escape more easily. When processing wide folding material, however, the contact pressure can be high, as a wide arc 13 also applies more force and on the other hand, to avoid unnecessary slippage also requires more contact force. Accordingly arise depending on the inlet width, but also on the nature of the material variably different ideal contact forces.

According to claim 25 is provided, the regulation of the contact pressure of the return spring 15 via a regulation of the spring preload of the return spring 15 make.

At such a device could e.g. a scale may be attached, e.g. so labeled that in order Simplification of setting, with correct setting depending on from the inlet width to read the corresponding inlet width is.

you So just set the spring preload with the help of the scale the inlet width of the arch.

claim 26 provides to make the spring preload by means of automated adjusting device.

Such an automated adjusting device is ideally controlled by a computer (eg programmed process computer, etc.) according to claim 27, for example, by means of a manually entered or eg metrologically (eg on the distance of the investment ruler of the center of Ausrichtisches) detected size for the inlet width (and if necessary, eg a material-dependent additional correction control eg via a manually adjusted potentiometer eg on the control panel etc.) automatically a setting (or at least rough presetting) of the spring preload of the return spring (s) 15 performs.

If you want to use the pocket folder times like a pocket folder conventional design, you just need the swing arm 9 determine (for example, by, if available, the controllable spring preload festzustellt) and the Arrretierung the folding roller 3 (see claim 19) solve, so that it is no longer stationary.

To reduce the friction in the area of the upper Ta rule lip 14 at the pocket mouth of the fold pocket 7 with simultaneous entry and exit of the bow 13 can reduce there, according to claim 28 bores can be mounted, which can be acted upon with compressed air (to avoid electrostatic effects like ionized compressed air).

The further, not closer illustrated embodiments for Falspaltweitenregelung see the use of at least one electronic control before, depending on the version even faster regulations (and correspondingly higher Folding frequency).

For electronic control already extends a simple photocell (according to claim 29), for example, below the stop on the folding pocket 7 is attached and when entering a bow 13 for upsetting causes a Falzspaltverringernde delivery device triggers.

When leaving the folding pocket eliminates this signal, which leads, for example by return springs to assemble the folding gap. Reach the next arch 13 this stop, repeats the desired control process. Through the use of multiple light barriers (or sheet sensors, etc.), the timing can be even better adapted to the folding phases of the folding cycle and specify.

Under Use of a computer (e.g., process computer, programmed process computer, microprocessor etc.), the control of the folding gap width (according to claim 30) without further Sensors, e.g. be done by including the calculator a (preferably adjustable) time delay or according to claim 32 involving an electronic odometer, (e.g. Inkrementalwegstreckenzähler, the with with a drive element, folding roller, etc. of the folding machine connected) and the time known by the computer when the sheet is started, (be it that from the computer, or e.g. An investor reports that just a bow is released) a time delay or better a track delay until calculated to the upsetting phase, and the fold gap width control precise delayed activated and thus controlled Falzphensynchron, since the odometer (e.g. Incremental encoder with computer) gives the computer pulse signals, each of which a certain way of the arc is assigned, since the Impulse of the position sensor from unitary angles each result in a concrete one Corresponding route.

One An important advantage of a computer-aided control is also therein to see that through appropriate programming of the computer technical delays the response of the opening and closing devices can be compensated.

Further, according to claim 31, for example, in a simple embodiment, an electronic control, for example, alone of a sensor signal (eg strain gauges on the lower lip of the pocket mouth of the folding pocket 7 ) or below the folding pocket 7 attached sensor, or alone by the pressing apart of the folding rollers 2 + 3 (possibly even perceived only by a simple switching contact) to control the Falzspaltweitenregelung.

According to claim 33, a computer includes additional sensors. This can e.g. sensors be in the feed (Ausrichtisch etc.) bow starts and / or Bow ends, overlapping Sheet (e.g., by opacity, Druckbildauslese etc.) etc. recognize and this for the synchronization of Report the computer to the computer with the folding cycle.

But this could also be a sensor, for example, which is the shrinkage of the sheet between the folding rollers 2 + 3 indicates what an even faster triggering of the folding gap extension between the feeding folding rollers 1 + 2 allows, as such a signal signals the end of the upsetting phase. For example, this could be on the lower lip of the fold pocket 7 be mounted strain gauge, or, for example, a laser light barrier, the space between the rollers below the folding pocket 7 detected.

According to claim 34, the opening means (this could, for example, an attached to a pivotable lever arm, the folding roller 1 be lifting solenoid), while the return movement occurs in the absence of control, for example by a return spring.

claim 35 provides an inversely functioning device, according to which the closure is controlled and an opening via return means he follows.

Especially fast control times are to be expected when according to claim 36 both an opening device, as well as a locking device are active in alternation.

through appropriate programming and possibly with the inclusion of further Sensors is according to claim 37 the inclusion of a calculation algorithm for autonomous distance control, such as she already in conventional Machines are used, provided.

For example, this automatic distance control could be set so that there will only ever be so much overlap (eg, a value set between 5cm and 10cm) so that the paper surfaces within the folder pocket 7 only barely or not flatly rub against each other, but only the end of the bow and the beginning of the bow are "rushing past each other".

Or this automatic distance control could be set to accommodate the Measure of overlap automatically as big as possible upregulated, so that the Folding operation if possible high performance still just as trouble-free remains.

Obviously revealed but also more meaningful specifications for such a distance automatic.

Claim 38 provides, the upper retracting folding roller 1 or the lower feeding folder 2 deflecting by means of an eccentric splzspalterweiternd or falzspaltveröringernd. Such a device, for example, could work as simple, common in bookbinding creasing machines, for example, as follows.

The corresponding retractable folding roller is e.g. on pivoting stored lever arms mounted at one end of each Roller is attached and at the other end, for example. a crank mechanism attacks, over a e.g. Electromagnetic coupling is triggered in each case for one revolution and thus the folding roller raises or lowers. Of course, should the device in each case on the two roll ends of a folding roller attached and e.g. be rigidly coupled, so that the corresponding folding roller evenly lifts or lowers.

According to claim 39 could such a device at the same time on both feeding Folding rollers act or be attached so that they themselves move away from each other or move towards each other.

In claim 40 is proposed as an alternative to active opening and closing operations, by means of control usually generated by compression springs contact pressure acts, for example via pivoting lever arms on the folding rollers to reduce by means of control, so that, for example, by the weight (at the lower retracting folding roller 2 ) and / or results in the opening of the folding gap width by the displacement of the urging through the Falzwalzenspalte paper. To close the seam gap, the contact pressure is then increased again. This could be done for example by means of pneumatic cylinders or electromagnets, etc.

But it would be according to claim 40, (eg lower demands / effort), for example, already sufficient without necessarily equal to a larger Falzspalt must result by means Falzzyklusabhängiger control in the non-upsetting phase, or partial phases of the non-upsetting phase, on reducing the spring preload the pressure / return springs the adhesion between the bow 13 and the feeding folding rollers 1 + 2 to weaken and thus produce a larger slip.

According to claim 41 is provided, the upper lip of the pocket 14 the pocket mouth of the fold pocket 7 slidably attach to these by means of control from the end of the upsetting phase, for example by means of electromagnetic drive, for example, 1.5 cm in the direction of the pocket stop 12 lift, so that the next sheet better in the folding pocket 7 can run in while the fold located in the fold 13 still the fold pocket 7 leaves. For example, by means of return spring etc, and appropriate control, it must be ensured that the upper lip of the pocket 14 is back in the lowered, regular position at the beginning of the next upsetting phase.

Claim 42 provides a combination of a according to claim 15 in 3 illustrated mechanical control with an electronic control.

For this should be at least one or better more of the aforementioned electrical / electronic Design features with the already self-regulating device combined, resulting in even shorter timing and a corresponding higher Result in performance, e.g. in combination with claim 36, which to a loss of the return spring to lead could. The opening could be by means of additional Actuating force (of, for example, at least one electromagnet) and according to "anticipatory" acting computer control substantially done faster while the closing process also actively controlled (for example also by at least one electromagnet) he follows.

Another, compared to the aforementioned embodiment simplified embodiment could, for example, be such that on a device according to claim 15 instead of (or in addition to) the return spring 15 on each of the two pivot arms 9 a switchable (in the activated state falzspaltverengende) power source (eg solenoid, electric motor driven eccentric, pneumatic cylinder, etc.) is mounted, for example, by means of electronic control (eg from a light barrier below the pocket stop 12 triggered) the contact pressure of the lower retracting folding roller 2 against the folding roller 3 At the beginning (or eg just before) the compression phase is reduced (power source disabled at this moment), resulting in a better folding away the pivot arms 9 leads. Even if, in very simple control by eg only a light barrier on the pocket stop 12 the pressure builds up again while the bow 13 still in the folding gap between the folding rollers 2 + 3 This is very well according to the invention, since this results in correspondingly fast closing times of the folding gap width after the sheet has emerged 13 from the folding gap between the folding rollers 2 + 3 result.

For this purpose, the switchable Ktaftquelle could, for example, one at the limit stop 19 attached, the swivel arm in the activated state attracting electromagnet, or it could, for example, the limit stop 19 even be a corre sponding electromagnet.

Further meaningful embodiments arise according to the claims 17 and / or 18th

So is provided eg unterhab or on the swivel arm 9 Measuring means, such as a switch to install.

With the help of eg a switch, eg attached to or near the limit stop 18 , for example, an electromagnet, for example, at the same time the limit stop 19 is, when touched by the swivel arm 9 turns on, it follows that the swivel arm 9 relatively easy to press down and accordingly quickly and easily by a between the folding rollers 2 + 3 urgent bow 13 can be deflected, but immediately, (eg waiving a delay circuit or delay setting accordingly short), for example, while the sheet in the folding gap between the folding rollers 2 + 3 is located, a restoring force builds up, so that the swivel arm 9 after leaving the arch 13 from the folding gap between the folding rollers 2 + 3 fast and with more power than just the pressure / return spring 15 moved back to the position in which between the feeding folding rollers 1 + 2 the collapsed fold gap results.

Due to the fact that in several aforementioned embodiments, the lower retracting folding roller 2 in order to increase the folding gap width deviates down, it is particularly in Folgefalzwerken (with correspondingly thick products and correspondingly large deflection of the lower retracting folding roller 2 ) makes sense, according to claim 43 in the design / manufacture of such Taschenfalzwerkes a height offset between the folding rollers 2 + 3 provided.

This results in then also in (possibly quite strong) lowered lower retracting folding roller 2 geometrical conditions that are approximately comparable to the geometrical conditions up to now. For this purpose, depending on the point at which a machine consisting of a plurality of Taschenfalzwerke a Taschenfalzwerk is used, a correspondingly smaller or larger offset (eg, some tenths mm or eg 1, 2 or 3mm) makes sense

in view of of that it is preferably desirable, the fold gap according to the invention as possible even, so on both sides at the same time and equate to close, is provided in claim 44, the two lever arms, the one controlled according Falzzyklusabhängig Store the folding roller and deflect it with respect to the folding gap width, preferably rigidly connect with each other. This is e.g. mites rods, trusses, Frame etc. possible and useful.

According to claim 45 is it possible to have one Folding roller with only one Falzzyklusabhängig controlled Falzspaltöffnungs- and Falzspaltschließvorrichtung to regulate. This should then preferably in the middle of such Attack the traverse / connecting rod, etc. to deflect the folding roller as evenly as possible.

Become a plurality (then preferably, for example, two), folding gap opening and folding gap closing devices attached to such, the roller bearing lever connecting mechanism, so it is according to claim 46 makes sense, their attack points as evenly as possible to distribute this connecting mechanism.

in the Meaning possible faster control times inventions necessarily makes sense, the moving mass and in particular the mass of the folding roller to be controlled according to claim 47 as low as possible though, of course, at correspondingly generously dimensioned Regulation also a regular Control folding roller according to the invention leaves.

A Reduction of the mass of the folding roller to be controlled is according to the state the technique of course possible in different ways.

Be it, that one e.g. the roller with as many as possible Holes drilled, the roller made of other, lighter material, or even off composed of different materials, creates as many hollow bodies as possible, or e.g. a roll shell over one possible Massearmes rolling mill stands, etc.

Likewise, it seems appropriate to the roll diameter of the invention to be controlled To reduce folding roller. This seems particularly interesting if the regulated folding roller, the upper retracting folding roller 1 is.

Claim 49 provides, by means of at least one, but preferably two (mounted on both sides of the machine, eg on each of the two, the corresponding folding roller lever each one) mounted adjustable limit stops, which limits the closing stroke and thus the closing size to an additional Falzspaltweiteneinstelleinrichtung (For example, conventional design) for the folding gap between the feeding folding rollers 1 + 2 to dispense, since it is sufficient to adjust the Falzspaltmaßes with closed / assembled folding gap by means of Falzzyklusabhängigen Falzspaltschließeinrichtung to one, or better both limit stops accordingly. Thus, then a corresponding limit stop could be configured as Falzspaltzweiteneinstelleinrichtung. This means that the limit stop (better at least two limit stops) the respective Falzspaltweiteneinstelleinrichtung replaced (eg of conventional design) and thus the limit stop is the Falzspaltweiteneinstelleinrichtung.

Of course it is it independent from the limit stop (preferably two limit stops) for the assembled dimension makes sense and recommended, e.g. For the setting of the opening dimension more adjustable limit stops to install.

Claim 50 provides that a Falzzyklusabhängig controlled Falzspaltöffnungsvorrichtung and / or Falzzyklusabhängig controlled Falzspaltschließvorrichtung together with a Falzspaltweiteneinstelleinrichtung (eg of conventional design) together on a (eg two-armed, rotatably mounted in the middle) lever (eg of conventional design), the folding roller (eg the upper feeding folding roller 1 and / or the lower feeding folding roller 2 ) is mounted, for example, by the additional falzyklusabhängig controlled opening / closing device (eg pneumatic cylinder, cascaded pneumatic cylinder, solenoid, eccentric device, geared motor with one-speed clutch, etc.) is attached to the usual point of the Falzspaltweiteneinstelleinrichtung, between the Falzspaltweiteneinstelleinrichtung and this point.

According to claim 51 is provided, sufficiently fast Falzspaltweiteneinstelleinrichtungen conventional Type (e.g., cascaded pneumatic cylinders) by means of additional falzyklusabhängiger Control according to the invention both simultaneously for setting the closed (normal size) as well as the opened one Falzspaltes and according Falschen cycle dependent back and forth to use.

According to claim 52 is provided, the falzspalterweiternde- or fold gap narrowing actuator in or on the lever arm holding the folding roller (for example, more pivotable Hebelarm) to install, or that the Lever arm itself an opening or closing device is. this could e.g. an opening one and / or divisible lever arm, in which the opening or closing device is integrated.

Claim 53 provides that at the upper retracting folding roller 1 Falzzyklusabhängige Falzspaltöffnungs- and Falzzyklusabhängige Falzspaltschließvorrichtung attached and to the lower feeding folding roller 2 Folding gap width adjustment (eg of conventional design) for adjusting the regular folding gap width (eg, set / effective with closed Falzzyklusabhängig controlled Falzspaltschließvorrichtung attached) are mounted.

Claim 54 provides that at the lower retracting folding roller 2 Falzzyklusabhängige Falzspaltöffnungs- and Falzzyklusabhängige Falzspaltschließvorrichtung are attached and to the upper feeding folding roller 1 Folding gap width adjustment (eg of conventional design) for adjusting the regular folding gap width (eg, set / effective with closed Falzzyklusabhängig controlled Falzspaltschließvorrichtung attached) are mounted.

claim 55 provides that a Folding gap width regulating opening or closing device by means of additional Lever arms directly on the lever arm holding the folding roller (e.g. pivoting lever arm) acts.

Claim 56 provides a variant in which by means of a deflection device (eg one or more lever, etc.), the upper retracting folding roller 1 by means of the displacement force of the (preferably folded) sheet 13 between the folding rollers 2 + 3 raised and thus the folding gap is increased.

According to claim 57 are different speed relations between the Zufördersystemen (Bias Tape Roller conveyance etc.) and the peripheral speed of the folding rollers makes sense.

According to claim 58 is provided, the adjustable investment rake angle (angle between the folding rollers and the investment ruler, which is preferably set to 90 °, for example by means of a Bowden cable with the angular correction of the Ta rule stopper 12 To couple (by this is nachgestellt / nachgeschoben), so that at a different setting of the contact angle (eg 87 ° or 93 ° to the folding rollers) of the pocket stop 12 Automatically adjusts, so that the angle between the investment ruler and the pocket stop is always 90 °, regardless of how the angle between the investment line and the folding rollers is set.

According to claim 59 is provided to install a plurality of preferably controlled narrow folding rollers instead of a wide (possibly regulated) folding roller. On the one hand, this results in a smaller individual mass of the narrow rolls to be controlled. On the other hand, it is (with alternative use of at least two controlled narrow folding rollers next to each other, instead of one) so possible, even in Doppelstromfalzanlagen for not simultaneously running next to each other folded sheets 13 to process this invention. In the now following, unspecified (drawing) illustrated embodiments are variants that do not falzspalterweiternd or falzspaltverringernd work, but as a complement or alternatively by other means the force required for the compression and folding formation (especially then, if due to an increased folding gap between the feeding folding rollers 1 + 2 the frictional force emanating from these rollers is insufficient).

When using the term "upsetting phase" in the following embodiments, of course, there is the fact that it is too wide asked Falzspaltweite to the feeding Falzwalzen 1 + 2 Without appropriate aids not (or unsatisfactory) comes to a compression. Therefore, for the following descriptions, when using the term "upsetting phase", this also applies, if necessary, only through the use of the respectively recommended means.

When using such designs, the folding gap width can then ideally be set so large that even overlapping sheets 13 undisturbed and without (or without too large) laterally distorting disturbing forces in the folding pocket 7 can run into.

Claim 60 provides that the arc 13 for this purpose by means of a control of small pressing transport means, such as small transport rolls, to the lower feeding folding roller 2 is pressed.

According to patent claim 61, the adhesion results from the fact that one or more of the folding rollers 1 + 2 + 3 a suction roll is.

According to claim 62 is provided, before the feeding folding rollers 1 + 2 Mechanical systems, such as rollers or shafts or rollers or balls, etc. to install, by means of control, at least in the upsetting phase an increased driving force on the bow 13 judge. This could also be, for example, according to claim 63, upstream knife shafts, as they are attached to some pocket folding conventional design, but by means of control (eg eccentric, as in claim 16) only in certain phases of a folding cycle a frictional connection with the bow 13 build up.

Claim 64 provides, by means of at least one driven or non-driven transport roller (but may for example also be a disc, etc.), (preferably a plurality of such transport rollers, in front of the feeding folding rollers 1 + 2 preferably arranged side by side) which the bow 13 in the upsetting phase against a relative to the role attached counterpart (eg driven transport roller, etc.) press, falzzyklusabhängig controlled to provide the bow with the necessary transport force to form the Stauchfalzes, the corresponding spaced-apart retracting folding rollers 1 + 2 just can not afford. For example, by performing on these movably mounted transport rollers such as electromagnetic or pneumatic actuators movement.

Claim 65 provides such transport rollers against the bow drive (eg bias binding, Schrägrollenantriebswalze etc.), the bow 13 conveys over the alignment distance to the fold pocket (with the bow 13 in between).

Claim 66 provides that the feeding folding rollers 1 + 2 Vacuum systems (eg vacuum rollers, suction wheels, etc.) are upstream, which are acted upon by means of control, at least in the upsetting phase with vacuum and thus an increased drive and folding force on the sheet 13 bring.

According to claim 67 are falzkrafterhöhende means on the folding pocket 7 appropriate. Depending on the design, these can also be used to determine the geometric parameters, such as, for example, clear width, position of the pocket upper part, 14 or pocket bottom lip with include in control operations and correspond faltszyklisch eg move / adjust.

According to claim 68 it is provided that the bow 13 by means of a blast air blast triggered by a control (of, for example, several hundred bars), for example starting from at least one of the tasks, at the upper lip of the flask 14 the pocket mouth of the fold pocket 7 supplied blown air device (eg blowing air nozzles, which are on the folding gap between the roller 2 + 3 directional are), in the upsetting phase in the folding rollers 2 + 3 is encountered.

These execution according to claim 68 is e.g. well combinable with an embodiment according to claim 64th

According to claim 69 is provided by means of control slide or pressing means, for example on Ausrichtisch 11 on the bow 13 let act, so that necessary for forming the upsetting arc drive comes about.

Claim 70 provides, on one of the two retracting folding rollers 1 + 2 or both feeding folding rollers 1 + 2 Balloon-like devices which are acted upon by means of control in at least the upsetting phase with compressed air and thus temporarily increase the roll diameter, to install, so as to produce a frictional connection (friction) to the sheet at otherwise too large folding gap. This could be, for example, on occasional (preferably, the roller circumferentially excavated) locations of the roller attached rubber coatings, for example, via corresponding holes and, for example, laterally placed in the roller compressed air falzphasenabhängig "inflated".

Claim 71 provides the reverse mode of action of claim 70. Consequently, at one of the two feeding folding rollers 1 + 2 or both feeding folding rollers 1 + 2 attached balloon-like devices, which are applied in non-upsetting phases with vacuum and thus temporarily reduce the roll diameter, thus resulting in an increase in the folding gap width. This could for example be on isolated (preferably, the roller circumferentially excavated) locations of the roller attached rubber coatings, for example, sucked via corresponding holes and eg laterally applied to the roller vacuum falzphasenabhängig and thus reduces the effective diameter of these points of the roller.

According to claim 72 could a device as in claim 70, of course, also work hydraulically.

claim 73 provides a device as in claim 71, which hydraulically is operated.

The claims 74 and 75 provide further roll diameter control, e.g. from the side from the outside exerted on the rollers, e.g. pulsating pressure by means of a roller installed in the Mechanics a change of the roll diameter, or by means of e.g. elektroagnetischer Force that contracts or stretches the roll in diameter in front

According to claim 76 is provided by means of a control triggered fast pulsed drive (eg electromagnetic, pneumatic, etc.), where the pocket stop 12 is appropriate to hit the sheet in the upsetting phase down, so that this of the folding rollers 2 + 3 is detected.

Claim 77 provides that the pocket upper lip 14 the pocket mouth of the fold pocket 7 is movably mounted and beats down the arc in the upsetting phase by means of the control activated drive, which the compression space between the folding rollers 1 + 2 + 3 reduced and thus to a capture of the bow 13 from the folding rollers 2 + 3 leads. It is also useful, for example, a technical combination of the features of claim 77 with the features of claim 41, which also allows an optimal entry of overlapping bow in the pocket.

According to claim 78 is provided on the folding pocket 7 eg in the area of the (possibly by wegschiebenden or wegklappenden away) pocket upper lip 14 at the pocket mouth of the fold pocket 7 a folding blade (eg with drive and control conventional design) to attach, which is the bow 13 due to a control signal from the control in the nip of the rolls 2 + 3 suggests.

Claim 79 provides a variant in which one of the two retracting folding rollers 1 + 2 or both feeding folding rollers 1 + 2 are out of round and / or are mounted eccentrically, so that only activated by means of control in certain Abrollzuständen a frictional connection with the bow 13 results.

Claim 80 provides, at least one preferably non-round (eg recessed at one point) or eccentrically mounted folding roller (preferably the upper retracting folding roller 1 ) as a function of the folding phase (at otherwise continuing folding) stop at the furthest possible gap, and activate by means of control for compression formation in an uninterrupted folding operation falzphasenabhängig again. As a result, the sheet slides undisturbed in the folding pocket 7 and gets at the crucial moment of the formation of the fold the necessary drive by Reibungskraftschluss.

Claim 81 provides that the upper retracting folding roller 1 or the lower feeding folder 2 or preferably both feeding folding rollers 1 + 2 Made of softer material than usual and seen over the width of the roller or rollers harder zones (eg harder material, or eg underlaid with harder material) ha ben, by means of control to increase the frictional force on the sheet 13 come together only in certain folding phases, or that, for example, by means of computers, the sheet start is controlled so that the bow 13 in the falzbildenden phase of the harder part of the feeding folding rollers 1 + 2 is detected.

Claim 82 provides that also other folding gap widths, as the folding gap between the feeding folding rollers 1 + 2 , be opened or closed by means of control.

claim 83 provides that one or more of the foregoing features e.g. for adjustment purposes (temporarily) can be deactivated.

Claims (83)

Method for folding sheets (preferably overlapping in the feed) (but also regularly fed sheets) in a pocket folder, characterized in that the folding gap width between the feeding folding rollers 1 + 2 is extended by at least one opening device triggered by at least one controller in non-upsetting phases (or at least partial phases of the non-upsetting phases) during a continuous folding operation. The preferably overlapping sheets 13 (Where possible, the beginning of the sheet of a subsequent sheet on the sheet end of the previous sheet 13 rests) are, for example, with normal (eg because two overlapping parts of the sheet together possibly as thick as the open Falzspaltweite), little or no frictional engagement of the feeding folding rollers 1 + 2 to the bow 13 in the fold pocket 7 and at their stop 12 transported. At the latest now (beginning of the upsetting phase) and without delaying or even interrupting the folding process, the folding gap width between the folding rollers is reduced by control 1 + 2 (eg on simple product strength). Consequently, there is a frictional engagement between the folding rollers in this upsetting phase of the folding operation 1 + 2 and the folded sheet 13 , so that it is folded and transported, or, if appropriate, and that the signatures 13 at (eg, in principle) extended folding gap width between the feeding folding rollers 1 + 2 and / or reduced contact pressure of the feeding folding rollers 1 + 2 and correspondingly increased slip and therefore correspondingly reduced (or even non-existent) frictional engagement between the signatures and the folding rollers 1 + 2 in the pocket 7 and to the stop 12 transported. At least now (beginning of the upsetting phase) and preferably without interrupting the folding operation are activated by control, the folding force increasing means (eg transport devices, rubbing transport devices, vacuum rollers, slides, etc.), so that there is less frictional engagement between the feeding folding rollers 1 + 2 and the folded sheet 13 it comes to a compression and a fold (which would not happen without the appropriate forward drive). Device for the application of the method folding machine with at least one pocket folder with a regular successive zufördernden conveyor (eg of conventional design) or preferably an imbricated conveying conveyor eg at the first folding unit a folding machine a feeder, or a feeder with suction conveyor that transports at least in phases faster than the aligning table 11 , or a shingling, possibly multi-level alignment table 11 possibly with different speeds, eg slowing down and therefore shingling conveyor speeds, whose bow starts are overlapping preferably on the sheet ends of the preceding sheet, or eg when using multiple folders a follower, which is set so much slower than the zufördernde folding unit or the zufördernde machine, that on the conveyor table 11 accumulating foldsheet 13 form an overlapping imbricated stream whose bow beginnings are preferably overlapping on the sheet ends of the preceding sheets, characterized in that the apparatus consists of a pocket folder (conventional type) on which at least one folding cycle-dependent control or regulation (eg mechanical, mechanically self-regulating, electromechanical, electrical, electronic, optical, opto-electronic, pneumatic, hydraulic, etc. control) for controlling the folding gap width (roll spacing) in non-upsetting phases (at least in phases of non-upsetting phases) of a continuous folding operation on the lower feed roll 2 , or the upper feed roller 1 , or both feed rollers 1 + 2 at least one eg ektromagnetisch, with spring force, electric motor, pneumatic, hydraulic, etc. driven falzspalterweiternde opening device (eg on pivotally mounted lever, etc.) triggers (actuated), and at least in the upsetting phase at least one correspondingly reversed acting (eg, electromagnetic, with spring force electromotive, pneumatic, hydraulic etc. driven) falzspaltweitenverringernde closing device (eg pivotally mounted lever, etc.) triggers, is attached, or, or possibly also and that the device consists of a pocket folder (conventional design), at the opposite in conventional setting enlarged folding gap wide, and / or reduced contact pressure of the feeding folding rollers 1 + 2 and correspondingly increased slip and therefore correspondingly reduced (or even non-existent) frictional engagement between the signatures 13 and the feeding folding rollers 1 + 2 at least one falzzyklusabhängige control or regulation (eg mechanical, mechanical self-regulating, electromechanical, electrical, electronic, optical, optoelectronic, hydraulic etc. control) for falzzyklusabhängigen activation of (optionally additionally attached) the folding force increasing means (eg temporarily activatable transport facilities such as temporarily assembled, the feeding folding rollers 1 + 2 upstream, driven knife shafts and / or at least one, preferably a plurality of temporarily zusammengestelle, the retracting folding rollers upstream, driven transport rollers, for example by means of their own actuator such as solenoid, pneumatic cylinders, etc. or eg by means of common drive, for example, on these transport rollers opposite transport rollers or eg press / close a roller, etc.) activated by the controller at least in the upsetting phase of a continuous folding operation (or at least initiating the upsetting phase of an uninterrupted folding operation by its assembly / activation, etc.). Method and apparatus for using the method according to one or more of the preceding claims, characterized in that the folding cycle-synchronous linking of actual folding cycle / folding phase and control / regulation of the folding gap expanding opening or folding gap narrowing closing device with respect to the location of a sheet in the machine and / or time / distance ratio of the sheet at the time of folding / folding location (eg pocket stop 12 ), and / or time and / or path of the bow to reach the pocket stop 12 etc. by means of at least one measuring means (eg light barrier and / or other, eg mechanical, mechanically self-regulating, electromechanical, electrical, electronic, optical, optoelectronic, pneumatic, hydraulic, etc. measuring means) takes place, the arc 13 detects / recognizes, etc. and thus a control / regulation (eg mechanical, mechanically self-regulating, electromechanical, electrical, electronic, optical, optoelectronic, pneumatic, hydraulic etc. control / regulation) for controlling / regulating a falzspalterweiternden opening device or falzspaltweitenverringernden closing device with the Actual state of the sheet position / folding phase linked. Method and device for using the method according to one or more of the preceding claims, characterized characterized in that falzzyklussynchone shortcut from actual Folding cycle / folding phase and control / regulation of Falzspalterweiternden opening device or Fold gap narrowing closing device, e.g. by means of the odometer (e.g. Inkrementalwegstreckenzähler etc.) and / or time delay device etc., e.g. by linking one, the bow start triggering electrical / electromechanical etc. controlled Saugrades / sheet feeder etc. with the track delay and / or delayed Control of the control / regulation for the folding gap opening opening according to the invention or folding gap width closing device by means of e.g. a corresponding, e.g. mechanical, mechanically self-regulating, electromechanical, electrical, electronic, optical, optoelectronic, pneumatic, hydraulic, etc. (e.g., distance-dependent Time Delay e.g. by means of incremental route counter and computer etc.) and / or Time Delay Control / regulation e.g. by means of a computer, e.g. without further Sensors / measuring means he follows. Method and device for using the method according to one or more of the preceding claims, characterized in that the falzzyklussynchrone linkage of actual folding cycle / folding phase and control / regulation of falzspalterweiternden opening device or falzspaltverengenden closing device, for example, takes place in that the falzspalterweiternde opening device or falzspaltweitenverringernde closing device its own, falzzyklusunabhängige, preferably in the clock frequency (eg, coupled by means of odometer, etc. to the transport of the folding / pocket folder) and in the ratio of opening and closing times / states adjustable control has, and the sheet start / sheet transport / bowing ( eg by means of electrically / electromechanically controlled suction wheel / sheet feeder etc.) of a separate, eg the, the falzspalterweiternde opening and falzspaltweitenverringerndene closing / re regulating control over the respective actual state of the folding gap between the feeding folding rollers 1 + 2 and eg via the control data / Steuerrythmus etc. (or but eg by means of sensors, measuring means, for example, to the feeding folding rollers 1 + 2 etc.) informed control (eg mechanical, mechanically self-regulating, electromechanical, electrical, electronic, optical, optoelectronic, pneumatic, hydraulic etc. control, preferably a computer) and eg taking into account the way / time to the pocket stop 12 (or beginning of the upsetting phase) with the thus predetermined control cycle of Falzspaltöffnungs- or Schließvorrich linked with precision (anticipation) is triggered. Method and device for using the method according to one or more of the preceding claims, characterized characterized in that Control is preferably designed so that the falzspaltweitenvergrößernde opening device before and after the upsetting phase as long as possible to open is actuated and the falzspaltweitenverringernde closing device as short as possible (ideally only during the upsetting phase, e.g. already shortly before) is pressed to close. Method and apparatus for using the method according to one or more of the preceding claims, characterized in that the control is preferably designed so that the seam gap decreasing closing device, before and after the phase in which overlapping sheet ends / sheet beginnings of overlapping sheets fed together between the feeding folding rollers 1 + 2 as long as possible to close and the fold gap width enlarging opening device is as short as possible (preferably only during the phase in which overlapping sheet ends / sheet beginnings of overlapping sheet fed together between the feeding folding rolls 1 + 2 are) operated to open. Method and device for the use of the method according to one or more of the preceding claims, characterized in that the control is preferably designed so that the falzspaltweitenvergrößernde opening device is actuated after the upsetting phase to open and at least until the complete entry of the sheet 13 in the feeding folding rollers 1 + 2 to open (opened) remains. Method and device for using the method according to one or more of the preceding claims, characterized in that the control is preferably designed so that the falzspaltweitenvergrößernde opening device until the upsetting phase (or eg shortly before) is actuated (and thus open) and that with the upsetting phase (or shortly before) the falzspaltweitenverringernde closing device is actuated and, for example, until the complete retraction of the sheet in the feeding folding rollers 1 + 2 pressed (closed) remains. Method and device for using the method according to one or more of the preceding claims, characterized characterized in that Control for actuating the opening or closing devices other, further and possibly individual (for example, order-changing) opening and closing regulations (or opening and closing diagrams), e.g. involving over (possibly movable) mounted sensors (e.g., photoelectric sensors, etc.) obtained information e.g. above Beginning of sheet, end of sheet, sheet position, folding time etc. has, from which Individual hemming cycle synchronous opening and closing operations result the e.g. also mixed forms of the aforementioned claims. Method and device for using the method according to one or more of the preceding claims, characterized characterized in that Assemble the seam gap exactly at the beginning of the upsetting Phase triggered becomes. Method and device for using the method according to one or more of the preceding claims, characterized characterized in that Composing the seam gap width before beginning the upsetting phase triggered becomes. Method and device for using the method according to one or more of the preceding claims, characterized in that the assembly of the seam gap width is minimally delayed (eg a few tenths of a second or a few hundredths of a second) after the sheet has stopped 13 to the bag stop 12 is triggered, resulting in a very short-term alignment before the actual upsetting phase. Apparatus for using the method according to one or more of the preceding claims, characterized in that to increase the drive force of the alignment table 11 and / or other feeding device such as inclined roller conveyor table, etc. (eg in addition to the measures in Taschenfalzwerken conventional design), one or more of the following measures are applied: - additional and / or heavier, the bow 13 on an aligned eg in sheet transport direction or eg inclined (eg conventional design) alignment / drive belt and / or inclined roller conveyor table etc. pressing balls, rollers, etc., - one (or more) additional drive belt / drive belt / drive rollers etc, eg also on the investment ruler opposite side and, for example, with the arc pressing on balls, etc., - additional drive sources, such as vacuum belts, etc., which, as conventionally inclined, or are straight, dH promoting in the direction of the sheet transport direction. Apparatus for using the method according to one or more of the preceding claims, characterized in that the lower feeding folding roller 2 by the type of suspension (eg as in 3 shown schematically, on a rotatable pivot arm 9 at an angle α eg between 20 degrees and 60 degrees at a bearing point 10 eg on the machine body 8th attached), is a mechanical control / regulation to the folding gap width, by displacing the between the folding rollers 2 + 3 entering fold sheet 13 temporarily preferably diverges diagonally and thus the Falzwalzenspalt between the feeding folding rollers 1 + 2 increased. Device for using the method according to one or more of the preceding claims, characterized in that the swivel arm 9 adjustably mounted (eg by means of rritable plug-in device, swivel device, etc.) and thus the angle α is variable. Device for using the method according to one or more of the preceding claims, characterized in that on the swivel arm 9 a measuring means (eg switch, switching contact, etc.) is mounted (eg on the underside of the swivel arm 9 ) which is triggered when opening the folding gap. Device for using the method according to one or more of the preceding claims, characterized in that below the pivoting arm 9 (and triggered by this with the fold gap open) a measuring means (switch, switching contact, inductive sensor photocell, etc.) is attached (eg at the limit stop 18 , or that, for example, the limit stop 18 the measuring means is). Apparatus for the use of the method according to one or more of the preceding claims, characterized in that in addition to the lower retracting folding roller 2 lying folding roller 3 no longer pivotable by a locking device (or no longer pivotable), but against lateral dodging (pushing away, etc.) is fixed in place, or that this folding roller is basically mounted stationary. Apparatus for the use of the method according to one or more of the preceding claims, characterized in that in addition to the lower retracting folding roller 2 lying folding roller 3 by means of correspondingly harder springs and / or shorter spring travel, etc. is sprung harder against dodging (and thus has a higher contact pressure) than the (preferably) diagonally (at an angle) suspended lower retracting folding roller 2 , Apparatus for using the method according to one or more of the preceding claims, characterized in that (as shown schematically in FIG 3 shown) at least one (preferably adjustable) limit stop 18 , but preferably at least two (preferably adjustable) limit stops 18 (on each of the two swivel arms 9 at least one) on a compression spring 17 (eg at the other end of the machine body 8th attached) is attached, by means of an adjusting screw 16 (which passes through the compression spring and into an internal thread on Begrenzunsanschlag 18 engages) is adjustable in the distance to the pivot arm and thus a Falzspaltweiteneinstellvorrichtung for the Falzwalzspalt between the folding rollers 2 + 3 is. Device for using the method according to one or more of the preceding claims, characterized that at least a (preferably adjustable) limit stop, preferably however, at least two (preferably adjustable) limit stops (at each one Roller bearing levers passing through an opening and closing device moves one) are attached to limit the opening stroke, the e.g. are also resilient (e.g., by attaching rubber blocks, etc.). Device for using the method according to one or more of the preceding claims, characterized in that (as in, for example, US Pat 3 shown schematically) at least one (preferably adjustable) limit stop 19 , but preferably at least two (preferably adjustable) limit stops 19 (on each roller bearing lever or swivel arm 9 which is moved by an opening and closing device a) to limit the closing stroke, for example by means of a fastening part 20 eg on the machine body 8th is attached, for example, by attachment (eg between the limit stop 19 and the swivel arm 9 ) of rubber blocks, etc. is resilient and preferably by means of an adjusting screw 21 (For example, in an internal thread in the mounting block 20 engages and on its out of the mounting block 20 outstanding screw end of the limit stop is slipped over) is adjustable, is attached. Device for using the method according to one or more of the preceding claims, characterized in that the contact pressure of the swivel arm 9 according to 3 attached lower feeding folding roller 2 against the folding roller 3 adjustable, eg by removing or adding further return springs 15 to suitably mounted brackets and / or by replacing it with harder or softer return springs 15 , is. Device for implementing the method according to one or more of the preceding claims, characterized in that on the return spring 15 for pressing on the swivel arm 9 according to 3 attached lower feeding folding roller 2 against the folding roller 3 at least one device for regulating the spring preload and thus the contact pressure (eg threaded screw, the spring 15 stronger or weaker biasing / compresses) is appropriate. Device for using the method according to one or more of the preceding claims, characterized in that the regulation of the spring preload and thus the restoring force of the return spring 15 by means of at least one automated adjusting device (eg servomotor, pneumatic cylinder, cascaded pneumatic cylinder, etc.) takes place. Method and device for using the method according to one or more of the preceding claims, characterized in that the automated adjusting device for regulating the restoring force of the return spring 15 is controlled by a controller (eg programmed computer, etc.), the contact pressure, for example, depends on the inlet width of the incoming sheet 13 regulates. Device for using the method according to one or more of the preceding claims, characterized in that on the upper lip of the pocket 14 the pocket mouth of the fold pocket 7 Blasluftdüsen are attached, for example, perpendicular to the incoming folded sheet 13 are directed. Device for using the method according to one or more of the preceding claims, characterized that the Control for the folding gap width a simple electrical or electronic control without computer (e.g. programmed process computer etc.). Device for using the method according to one or more of the preceding claims, characterized that the Control to control the folding gap width an electrical or electronic control comprising at least one computer (e.g. Process computer programmed process computer, Microprocessor, etc.). Device for using the method according to one or more of the preceding claims, characterized that the Control to control the folding gap width an electrical or electronic control is by means of at least one sensor (e.g., light barrier, laser light barrier, strain gage, etc.) with the folding cycle or the folding phase is synchronized. Device for using the method according to one or more of the preceding claims, characterized that the Control to control the folding gap width an electrical or electronic control means of electronic odometer (e.g. Inkrementalwegstreckenzähler) is synchronized with the folding cycle or the folding phase. Device for using the method according to one or more of the preceding claims, characterized that the Control to control the folding gap width an electrical or electronic control means of electronic odometer (e.g. Inkrementalwegstreckenzähler) and at least one sensor (e.g., light barrier, laser light barrier, strain gauges etc) is synchronized with the folding cycle or the folding phase. Device for using the method according to one or more of the preceding claims, characterized that the Control in non-upsetting phases an opening device (e.g., solenoid on a pivotable bearing arm of a retractable folding roller, etc.) triggers and that the correspondingly opposite locking device a self-contained return means (e.g., return spring etc.). Device for using the method according to one or more of the preceding claims, characterized that the Control at least in the upsetting phase a locking device (e.g., electromagnet on a pivotable bearing arm of a retractable folding roller etc.) triggers and that the corresponding oppositely acting opening means an independent return means (e.g., return spring, etc.) is. Device for using the method according to one or more of the preceding claims, characterized that the Control both an opening device with at least one drive (for example electromagnet, pneumatic cylinder, motorized eccentric etc.) as well as a locking device with at least one drive (e.g., solenoid, pneumatic cylinder, motorized eccentric, etc.) in alternation. Device for using the method according to one or more of the preceding claims, characterized in that a computer is attached to the controller (or the controller itself is a computer, for example), which is replaced by means algorithms performs an independent distance control of the signatures. Device for using the method according to one or more of the preceding claims, characterized in that the opening device and / or closing device is an eccentric device (eg by means of electrically switchable coupling activatable eccentric disc, eg with eccentrically mounted crankpin, crank mechanism, etc.) which (eg Bars, levers, etc.) the upper feeding folding roller 1 raises or lowers or the lower retracting folding roller 2 raises or lowers and thus regulates the folding gap width. Device for using the method according to one or more of the preceding claims, characterized in that the opening device and / or closing device is an eccentric device (eg by means of electrically switchable coupling activatable eccentric disc, eg with eccentrically mounted crankpin, crank mechanism, etc.) which (eg Bars, levers, etc.) the two feeding folding rollers 1 + 2 apart sets or together and thus regulates the folding gap width. Device for using the method according to one or more of the preceding claims, characterized in that by means of control (eg by falzzyklusabhängige temporary reduction of the spring bias of the pressure / return springs eg solenoid, pneumatic cylinder, cascaded pneumatic cylinder, actuators with threaded engagement, etc.) of the contact pressure of the pivotable bearing arms the upper feeding folding roller 1 or the lower feeding folder 2 or both feeding folding rollers 1 + 2 is reduced to open the Falzspaltweite, so that these under the influence of a continuous arc 13 and possibly weight (eg at the lower retracting folding roller) falzspaltweitend (eg minimal, or even friction-reducing or slip-increasing) opens and closes eg by increasing the contact pressure, at least in the upsetting phase again (or again slip-reducing the full frictional produces). Device for using the method according to one or more of the preceding claims, characterized in that the upper lip of the flap 14 the pocket mouth of the fold pocket 7 slidably mounted and by means of control from the end of the upsetting phase (the moment when the folding rollers 2 + 3 the bow 13 eg by means of a selenoid adapter in the direction of the pocket stop 12 is pushed and before the next sheet 13 the pocket stop 12 reached, back into the regular position (eg, under the influence of a return spring) is pushed back. Device for using the method according to one or more of the preceding claims, characterized that the Control a combination of a mechanical control (e.g. according to claim 11) and an electrical or electronic control / regulation is. Device for using the method according to one or more of the preceding claims, characterized in that the folding roller 3 especially at Taschenfalzwerken, which are Folgefalzwerke, slightly lower than the feeding folding roller 2 attached (eg 2mm height offset). Method and device for using the method according to one or more of the preceding claims, characterized in that the on both sides of the roller / machine at the (upper retracting folding roller 1 or lower feeding folding roller 2 or both feeding folding rollers 1 + 2 ) with a folding cycle-dependent folding gap width control (opening and closing device) equipped roller mounted pivotable / rotatable bearing lever with a, both bearing levers in their falzspaltweitenrelevrelevant deflection connecting mechanism (eg a crossbar, connecting rod, linkage, rack linkage, possibly also cables, etc.) is connected, so that (as a result of this connection) both bearing levers deflect as far as possible and the same distance so that the seam gap opens uniformly. Method and device for using the method according to one or more of the preceding claims, characterized in that the on both sides of the folding roller / machine at the (upper feeding folding roller 1 or lower feeding folding roller 2 or if necessary, two feeding folding rollers 1 + 2 , Wherein the claims and description relating hereinafter only to a folding roller then for both the upper folding roller 1 as well as for the lower folding roller 2 apply) with a Falzzyklusabhängigen Folding gap width control (opening and closing device) equipped folding roller mounted pivoting / rotatable bearing lever with a, both bearing levers of a folding roller with respect to their falzspaltweitenrelevante deflection connecting mechanism (eg a crossbar, connecting rod, linkage, rack linkage, possibly also cables etc .) Is connected, so that these two bearing levers (due to this compound) as far as possible and equally far deflect, so that the folding gap opens uniformly and that both rotatably mounted / pivotally mounted, the folding roller bearing lever / lever arms, by means of a common (a common pro Folding roller) the folding roller deflecting Falzzyklusabhängige fold gap width control (opening device and closing device) is equipped, which preferably in the middle of the folding roller stored two bearing lever / lever arms connecting mechanism (eg crossbar, connecting rod, etc.) attacks. Method and device for using the method according to one or more of the preceding claims, characterized in that the on both sides of the folding roller / machine at the (upper feeding folding roller 1 or lower feeding folding roller 2 or if necessary, two feeding folding rollers 1 + 2 , Wherein the claims and description relating hereinafter only to a folding roller then for both the upper folding roller 1 as well as for the lower folding roller 2 apply) with a Falzzyklusabhängigen Folding gap width control (opening and closing device) equipped folding roller mounted pivoting / rotatable bearing lever with a, both bearing levers of a folding roller with respect to their falzspaltweitenrelevante deflection connecting mechanism (eg a crossbar, connecting rod, linkage, rack linkage, possibly also cables etc .) Is connected so that these two bearing levers (due to this compound) as far as possible and equally far deflect, so that the folding gap opens uniformly and that both rotatably mounted / pivotally mounted, the folding roller bearing lever / lever arms, by means of several (preferably two per Folding roller) the folding roller deflecting falzzyklusabhängigen Falzspaltweitenregelungn (opening devices and closing devices) are equipped, preferably evenly connected to the folding roller bearing two bearing lever / lever arms connecting mechanism (eg Tra verse, connecting rod, etc.) attack (eg, respectively on the outer sides of a connecting rod). Method and device for using the method according to one or more of the preceding claims, characterized in that the folding roller provided with a folding cycle-dependent folding gap width control (opening and closing device) (the upper retracting folding roller 1 or the lower feeding folder 2 or possibly also both feeding folding rollers 1 + 2 ) in lightweight construction (eg lighter material, different materials, provided with hollow bodies, with various material-lifting holes, etc.) and thus is lighter than a folding roller of conventional design. Method and device for using the method according to one or more of the preceding claims, characterized in that the folding roller provided with a folding cycle-dependent folding gap width control (opening and closing device) (the upper retracting folding roller 1 or the lower feeding folder 2 or possibly also both feeding folding rollers 1 + 2 ) has a smaller diameter (than folding rollers of conventional design) (eg, that the upper feeding folding roller 1 is provided with a Falzzyklusabhängigen Falzspaltweitenregelung and has a smaller diameter than the other folding rollers of the Taschenfalzwerkes. Method and device for using the method according to one or more of the preceding claims, characterized characterized in that falzzyklusabhängige Falzspaltöffnungsvorrichtung and falzzyklusabhängige Falzspaltschließvorrichtung at the same time also a folding gap width adjustment (at least for the put together measure of Folding gap width), e.g. by at one, the folding roller opposite Lever arm of a folding roller holding a pivotable, e.g. in the center of the lever (for example, two-armed, in the middle of rotating / pivoting mounted lever arm) a Falzzyklusabhängig controlled Falzspaltöffnungsvorrichtung or falzzyklusabhängig controlled seam gap closing device (e.g., pneumatic cylinder, cascaded pneumatic cylinder, electromagnet, Eccentric, geared motor with one-way clutch, etc.) attached is, the folding gap closing device with at least one (preferably on both sides of the machine / roll, That For each of the two lever arms supporting the roller at least one each) adjustable limit stop is provided, which limits the closing size adjustable and thus a folding gap width adjustment for the assembled folding gap width (e.g., in the upsetting phase). Device for implementing the method according to one or more of the preceding claims, characterized in that the folding cycle-dependent opening and closing device is (additionally) attached to a folding gap width adjustment device (conventional design), for example by the folding gap width setting device (eg of conventional design) not being directly attached to a the folding roller opposite lever arm of a folding roller holding a pivotable, for example, in the middle gelagedrten lever (eg two-armed, rotatably mounted in the middle / lever arm mounted) is mounted, but by between this point to which the Falzspalzeinstelleinrichtung ZB means push rod, extensions or direct adhesion etc, acts, and the Falzspaltweiteneinstelleinrichtung, so for example between a correspondingly separate push rod or eg simply between the Falzspaltweiteneinstelleinrichtung and the lever, etc. an additional, in their effect on the Folding gap width setting device preferably adding (or subtracting in another interpretation) folding gap opening device (eg pneumatic cylinder, cascaded pneumatic cylinder, electromagnet, eccentric device, Geared motor with single-speed clutch, etc.) in the deactivated state then, for example, the falzzykluaabhängig controlled feed device is attached. Method and device for using the method according to one or more of the preceding claims, characterized in that sufficiently fast adjustable folding gap width setting devices of conventional design (eg folding gap width setting devices, which make the folding gap width by means of differently controlled cascaded pneumatic cylinders, etc.) the folding cycle dependent opening and closing of the folding gap between the feeding folding rollers 1 + 2 by means of an additional control (eg computer, programmed process computer, etc.), by briefly adding a further opening value to the regular setting value and setting it accordingly. Device for using the method according to one or more of the preceding claims, characterized that the Falzspalterweiternde opening device and the fold-gap narrowing closure device in (or at) the the folding roller holding lever arm (e.g., swinging lever arm) is attached, or that the Lever arm (e.g., by attaching force / motion generating drives such as. Electromagnets, eccentric geared motors, pneumatic cylinders etc.) even an opening or closing device is. Device for the use of the method according to one or more of the preceding claims, characterized in that (preferably for both sides of the machine / roll storage applies) the upper retracting folding roller 1 on a rotary / Schwenkbeweglichen lever arm (preferably with extended lever on the side to which the roller is not attached) is attached to the same time, preferably at the, opposite to the roller, preferably extended lever arm a Falzzyklusabhängig controlled Falzspaltöffnungs- and Falzspaltschließvorrichtung ( For example, pneumatic cylinder, cascaded pneumatic cylinder, solenoid, Exzenetantrieb, geared motor with eccentric and single-speed clutch, etc.) is attached and that at the lower retracting folding roller 2 a folding gap width adjustment device (eg of conventional type) is mounted. Device for using the method according to one or more of the preceding claims, characterized in that (preferably for both sides of the machine / roll storage applies) the lower retracting folding roller 2 on a rotary / Schwenkbeweglichen lever arm (preferably with extended lever on the side to which the roller is not attached) is attached to the same time, preferably at the, opposite to the roller, preferably extended lever arm a Falzzyklusabhängig controlled Falzspaltöffnungs- and Falzspaltschließvorrichtung ( For example, pneumatic cylinder, cascaded pneumatic cylinder, electromagnet, Exzenetantrieb, geared motor with eccentric and single-speed clutch, etc.) is attached and that at the upper retracting folding roller 1 a folding gap width adjustment device (eg of conventional type) is mounted. Method and device for using the method according to one or more of the preceding claims, characterized characterized in that Falzspaltvergrößernde opening device and the folding gap reducing locking device by means of additional Lever arms falzspaltvergrößernde or Falzspaltverringernde force / movement on the folding roller holding Apply lever arm (e.g., pivoting lever arm). Method and device for using the method, according to one or more of the preceding claims, characterized in that by means of a deflecting device (eg one or more reversing levers etc.) the upper retracting folding roller 1 , by means of the displacement force of the (preferably folded) sheet 13 between the folding rollers 2 + 3 , raised and thus the folding gap is increased. Method and device for using the method according to one or more of the preceding claims, characterized in that the sheet 13 to the folding pocket 7 transporting transport device (eg bias belt with balls, vacuum-loaded bias belt, inclined roller conveyor table, etc.) a relatively similar (eg, slightly lower, lower, slightly higher, higher or the same) transport speed, such as the peripheral speed of the feeding folding rollers 1 + 2 has and possibly in the speed (relative to the peripheral speed of the feeding folding rollers), for example by means of an intermediate continuously variable transmission is adjustable. Method and device for using the method, according to one or more of the preceding claims, characterized in that the angle correction (for example of conventional design) of the pocket stop 12 (Eg electrically, eg by means of servomotor, geared motor, servomotor etc. and / or mechanically, eg by means of Bowden cable etc.) in a fixed (preferably 90 °, if necessary, but also adjustable) angle is connected to the investment ruler, so that the angle between the investment ruler and the pocket stop 12 always the firmly assigned angle (preferably 90 °) remains and thus the pocket stop when adjusting the contact angle (angle between the Anla gelineal and the feeding folding rollers) or the contact angle when adjusting the pocket stop and / or both together eg by means of a common (eg electrical, mechanical, electromechanical, etc.) nachstellt control so that the angle between the investment ruler and the pocket stop 12 always adjusted automatically to preferably 90 ° / readjusted. Method and device for using the method according to one or more of the preceding claims, characterized in that the lower retracting folding roller 2 or both feeding folding rollers 1 + 2 , or preferably, the upper retracting folding roller is multi-part (at least two parts), so that instead of a wide folding roller a plurality of correspondingly narrow folding rollers are mounted side by side. Method and device for using the method according to one or more of the preceding claims, characterized in that by means of control at least in the compression phase falzkraftverstärkende means (eg transport means such as small wheels etc) the bow 13 to the upper feeding folding roller 1 and / or preferably to the lower feeding folding roller 2 press down. Device for using the method according to one or more of the preceding claims, characterized in that at least one (or two or three) of the folding rollers 1 + 2 + 3 a suction roll that is ideally (eg, because it is a roll shell, which rolls over a support structure) has a directable or limited suction area. Method and device for using the method according to one or more of the preceding claims, characterized in that the feeding folding rollers 1 + 2 mechanical systems (eg rollers, shafts or rollers or balls, etc.) are mounted upstream, which by means of control, at least in the upsetting phase, the drive and thus folding force on the sheet 13 increase. Method and device for using the method according to one or more of the preceding claims, characterized in that the feeding folding rollers 1 + 2 By means of appropriate opening and closing device assembled driven knife shafts (eg of conventional design), to which one or more transport rollers are mounted, are upstream, which are assembled at least in the upsetting phase means falzzyklusabhängiger control. Device for using the method according to one or more of the preceding claims, characterized in that the feeding folding rollers 1 + 2 by means of appropriate opening and closing device individually or collectively assembled transport devices, for example, at least one, preferably a plurality of driven or non-driven transport rollers, which compiled the bow 13 For example, press against a preferably driven counter-roller / countershaft / counter-roller (it is immaterial whether the counter-roller / countershaft / counter-roller below the arc 13 and the transport rollers above the arch 13 , or the transport rollers below the bow 13 and the counter roll / countershaft / counter roll above the bow 13 are mounted), which preferably (at least) in the upsetting phase means falzzyklusabhängiger control eg by means of individual opening and closing device (each transport roller is pressed individually eg against the counter roll) or by means of common opening and closing device (a plurality of transport rollers have a common opening - And closing device that presses the rollers together, for example, against the counter roll), the opening and closing device, for example by means of electromagnet, pneumatic cylinder, return spring, etc. (eg, according to one or more of the various embodiments) is driven. Device for using the method according to one or more of the preceding claims, characterized in that the feeding folding rollers 1 + 2 by means of appropriate opening and closing device individually or collectively assembled transport devices, for example, at least one, preferably a plurality of driven or non-driven transport rollers, which compiled the bow 13 For example, against the sheet transport (eg of conventional design) such as a Schrägrollenband and / or one or more additional, possibly straight conveyor belts, etc., and / or Schrägrollenzuförderungen, Schrägrollentische etc., and / or other feed systems press, are upstream, preferably (At least) in the upsetting phase means falzzyklusabhängiger control eg by means of individual opening and closing device (each transport roller is pressed individually against the sheet transport) or by means of common opening and closing device (a plurality of transport rollers have a common opening and closing device, the rollers together against the sheet transport presses), are assembled, the opening and closing device, for example by means of electromagnet, Pneu matic cylinder, return spring, etc. (eg, according to one or more of the various embodiments) is driven. Device for using the method according to one or more of the preceding claims, characterized in that the feeding folding rollers 1 + 2 Vacuum systems (eg vacuum rollers, suction wheels, etc.) are mounted upstream, which are acted upon by means of control at least in the upsetting phase with vacuum, and thus the drive and folding force on the sheet 13 increase. Device for applying the method according to one or more of the preceding claims, characterized in that the folding force increasing means on the folding pocket 7 are attached, by means of control, at least in the upsetting phase on the bow 13 Act. Device for using the method according to one or more of the preceding claims, characterized in that on the upper pocket lip of the pocket mouth of the folding pocket 7 a blown air device (eg on the folding gap of the folding rollers 2 + 3 directed blast air nozzles) is attached, which by means of the controller in the upsetting phase triggered blast air blast (eg several hundred bar) the arc 13 in the folding gap of the folding rollers 2 + 3 suggests. Device for using the method according to one or more of the preceding claims, characterized in that slides or pressing means (eg on the alignment table 11 attached) are activated. Device for using the method according to one or more of the preceding claims, characterized in that balloon-like (the roller diameter temporarily increasing) devices (preferably on one of the two retracting folding rollers 1 + 2 or both feeding folding rollers 1 + 2 attached) are acted upon by means of control at least in the upsetting phase with compressed air. Device for using the method according to one or more of the preceding claims, characterized in that balloon-like devices (preferably on one of the two feeding folding rollers 1 + 2 , or attached to both) by means of control in non-upsetting phases (in order to reduce the diameter and thus reduce the frictional engagement with the arc 13 ) are subjected to a vacuum. Device for using the method according to one or more of the preceding claims, characterized in that balloon-like (the roller diameter temporarily increasing) devices (preferably on one of the two retracting folding rollers 1 + 2 or both feeding folding rollers 1 + 2 mounted) by means of control at least in the upsetting phase (eg as part of a hydraulic system) are pressurized. Device for using the method according to one or more of the preceding claims, characterized in that balloon-like devices (preferably on one of the two feeding folding rollers 1 + 2 , or attached to both) by means of control in non-upsetting phases (in order to reduce the diameter and thus reduce the frictional engagement with the arc 13 ), for example, as Bestanteil a hydraulic system are temporarily subjected to reduced / absent / ansaugendem pressure / vacuum. Apparatus for the use of the method according to one or more of the preceding claims, characterized in that the roller diameter temporarily enlarging devices (eg mechanically, electromechanically, electromagnetically etc. operated devices) preferably on the upper retracting folding roller 1 , or the lower einzenhneden folding roller 2 or both feeding folding rollers 1 + 2 be activated by means of control at least in the upsetting phase. Device for using the method according to one or more of the preceding claims, characterized in that the roller diameter temporarily (eg mechanically, electromagnetically etc.) reducing devices, preferably at the upper of the two retracting folding rollers 1 , or the lower feeding folding roller 2 , or on both feeding folding rollers 1 + 2 by means of control in non-upsetting phases (in order to reduce the diameter and thus reduce the frictional engagement with the arc 13 ) are activated (eg, by temporarily attracting magnetic roll shells to the interior of the roll and / or at least one mechanism drawing a roll sheath roll diameter down into the interior of the roll). Device for using the method according to one or more of the preceding claims, characterized in that the pocket stop 12 in the fold pocket 7 attached to a (preferably fast, pulse-like) drive (eg solenoid, pneumatic cylinder, etc.), which is the bow 13 by means of control in the upsetting phase downwards in the direction of the folding gap of the folding rollers 2 + 3 beats (pushes). Device for using the method according to one or more of the preceding claims, characterized in that the pocket upper lip 14 at the pocket mouth of the bag 7 is movably mounted and has a drive (eg solenoid, pneumatic cylinder, etc.), which by means of control in the compression phase, the arc 13 down into the folding nip of the folding rollers 2 + 3 suggests. Device for using the method according to one or more of the preceding claims, characterized in that on the folding pocket 7 eg in the area of the (possibly by wegschiebenden or wegklappenden away) pocket upper lip 14 at the pocket mouth of the fold pocket 7 a Falzschwertvorrichtung (folding blade with drive and control of conventional design) is attached to the bow 13 triggered in the upsetting phase of the control between the folding rollers 2 + 3 suggests. Device for using the method according to one or more of the preceding claims, characterized in that the upper retracting folding roller 1 or the lower feeding folder 2 or both retracting folding rollers is out of round or eccentric, so that activated only by control in certain Abrollzuständen a frictional connection with the bow 13 results, or that, for example, by means of computers, the sheet start is controlled so that the bow 13 in the hemming phase of the touching roll parts of the feeding folding rolls 1 + 2 is detected. Device for using the method according to one or more of the preceding claims, characterized in that preferably the upper retracting folding roller 1 or the lower feeding folder 2 or both retracting folding rollers is out of round or eccentric, so that activated only by control, in certain Abrollzuständen a frictional connection with the bow 13 yields, and that at least one of the two feeding folding rollers 1 + 2 , preferably the upper feeding folding roller 1 at otherwise continuing folding, for example by means of an electrically actuated clutch (after the fold in the rotational state in which the fold is open) stopped and by means falzzyklusabhängiger control for compression of the next fold in the appropriate moment of an uninterrupted folding in a timely manner and without being delayed by triggering still comes to an interruption of the folding process (apart from a possible alignment phase in the range of fractions of a second) comes, again engaged and thus falzbildend is put into short-term rotation (eg one revolution). Device for using the method according to one or more of the preceding claims, characterized in that the upper retracting folding roller 1 or the lower feeding folder 2 or preferably both feeding folding rollers 1 + 2 Made of softer material than usual and seen across the width of the roller or rollers have harder zones (eg made of harder material, or eg underlaid with harder material, etc.), by means of control in order to increase the frictional force on the sheet 13 come together only in certain folding phases, or that, for example, by means of computers, the sheet start is controlled so that the bow 13 in the hemming phase of the harder part of the feeding folding rollers 1 + 2 is detected. Apparatus for the use of the method according to one or more of the preceding claims, characterized in that also different folding gap widths, as the folding gap width between the feeding-in folding rollers 1 + 2 , be opened or closed by means of control. Device for using the method according to one or more of the preceding claims, characterized that one or several of the aforementioned, if necessary attached to a pocket folder Temporarily by simple accessories, e.g. for adjustment purposes can be deactivated.