EP0931747B1 - Folder for a printing press - Google Patents

Description

The invention relates to a folder for rotary printing presses, especially a folder that works without a point.

From the prior art, DE 44 46 753 A1 is a folding device for a Printing machine became known. The folder comprises a first one Folding cylinder, which is equipped with controllable grippers, and a second Folding cylinder, which is also equipped with controllable grippers. The second folding cylinder is equipped with additional, controllable grippers that in addition to the controllable grippers already present on its circumference are provided to the rear end of the signatures against the scope of the second folding cylinder. The additional controllable gripper exists from a spring steel blade, which is received by a bearing that with a transverse pipe is connected. The additional controllable gripper works with a bracket that is a strip of elastic material receives.

DE 43 42 037 C1 describes a method and a device for transverse folding of Signatures become known. The signatures are in one Rotary press subordinate folder with one on one Collecting cylinder in the starting area of a holding device, half of the first or leading half of signatures. this happens by the penetration of a folding knife into folding jaws Folding jaw cylinders, with the half-folded copies in the folding jaws being held. Then a second or trailing half the signatures in an area of the intersection of one of the axes of rotation the imaginary plane connecting the cylinder with a tangent to the circumference of the collecting cylinder from a controllable holding device in your Gripped and held end area. After that, the beginning area the first or prefixing half of the signatures from the holding devices of the collecting cylinder no later than its speed zero or close to Zero are released until the beginning and end of each in Signature flaps held approximately on top of each other. Finally there each the holding device of the jaw cylinder the trailing or second half of each copy released.

The problem of the whip effect arises with transverse folding processes. By the at Transition of the specimens from a high to the other cylinder Accelerations, there is an uncontrolled spreading or fanning out the end of the second, d. H. trailing half of a signature; also a Turning corners is possible. According to the solution shown DE 43 42 037 C1 the problem that arises is only partially solved, since that other end of the signature remains free. In previous attempts at solution also the problem of an extension movement of the specimen gripping gripper always in the gap between copy-leading cylinders during a longer period of rotation of the cylinders in the circumferential direction resulted in an enlargement of the envelope around the cylinder in question.

The present invention is therefore based on the object Product transition of a signature from one to the other leading the copy Optimize cylinders and the acceleration processes that occur to make it manageable.

According to the invention, this object is achieved through the features of Claim 1 solved.

The advantages that can be achieved are diverse. The holding devices allow a fixation of the open material web ends to a particular critical point in time during the transition between the moving surfaces the cylinder.

The holding and copy guidance devices according to the invention enable a much more precise guidance of the leading material web end in the cutting gap wake and thus allow higher production speeds for Folders too.

In a further embodiment of the inventive idea, the holding and Copy guidance devices arranged on sliding supports that allow more precise guidance of the same. The supports can be easy to manufacture as slide guides. Will the Copy guide devices like a backdrop essentially parallel to Normals guided on the axes of rotation of the cylinders can be exactly Determine measurable entry and exit movements that also apply different are each adaptable to the material web thickness to be processed. The Support of the copy guidance device can be done via a lever connection the rotation of an actuating shaft on which the lever connection is arranged be moved. The control shaft in turn can be a control roller or be actuated by means of an energy store.

The item guidance devices can be placed side by side, like the Tines of a rake can be arranged so that they with the im Cutting gap overrun emerging from the opposite cylinder Do not collide holding devices. The specimen guide devices dive also in the retracted state in recesses of the cutting knife storage and therefore do not affect the geometry of the cutting gap.

The support on which the holding devices are included is included Provide openings that are penetrated by fasteners. To this The position of the shift path of the support is precisely defined, upper and bottom dead center are fixed. Support is moved by a on a control cam rolling control roller, which is connected to the Support are connected. The control curve can be both a act closed as well as an open control curve. When using an open cam an additional spring element is provided to the Contact between the surfaces of the cam and the control roller Ensure maintenance of a preload.

• Der Abtrennung eines Exemplars von einer Materialbahn in einem Schneidspalt und einer ersten bewegten Oberfläche und einer zweiten bewegten Oberfläche,
• dem Ausfahren von Exemplarführungseinrichtungen und deren Anstellung an das vorlaufende Ende einer Materialbahn an die zweite bewegte Oberfläche bei der Passage eines Schneidspaltnachlaufs,
• dem Ergreifen des vorlaufenden Endes der Materialbahn durch Halteeinrichtungen, die während der Passage des Schneidspaltnachlaufes aus der ersten bewegten Oberfläche austreten und
• dem Einfahren der Exemplarführungseinrichtungen in die zweite bewegte Oberfläche.

The present invention also comprises a method for transferring an end of a material web after a cutting process to a first moving surface, with the following method steps:

• The separation of a specimen from a material web in a cutting gap and a first moving surface and a second moving surface,
• the extension of copy guiding devices and their placement at the leading end of a material web on the second moving surface when passing a cutting gap wake,
• the gripping of the leading end of the material web by holding devices which emerge from the first moving surface during the passage of the cutting gap trailing and
• the insertion of the item guidance devices into the second moving surface.

Other procedural features include the fact that Extending movement of the holding devices on the first moving surface against the transport direction of the material web through the cutting gap outlet runs. Also contact the outside of the item guide the front end of the web of material and place it against the first moving one Surface. Finally, the retraction and extension movement of the holding device a rotational movement is superimposed on or in the first moving surface. During the retraction and extension movement of the holding devices by the on the The control roller running on the cam becomes the sliding surface for the support forming guide body pivoted by turning the control shaft. The Rotation of the control shaft can either be via a cam roller mechanism or via an electric motor adjustment or the like.

The invention will be explained in more detail below with reference to a drawing.

Fig. 1

die Seitenansicht einer Zylinderkonfiguration gemäß der Erfindung mit einem exemplarführenden Zylinder zugeordneten Schneidzylinder,

Fig. 2

am Schneidzylinder auf einer Kulissenführung bewegbar angeordnete Exemplarführungseinrichtung im eingefahrenen Zustand,

Fig. 3

die in Fig. 2 erläuterte bewegbare Exemplarführungseinrichtung im ausgefahrenen Zustand,

Fig. 4

eine Draufsicht auf die Exemplarführungseinrichtungen am Schneidzylinder,

Fig. 5 - 7

am ersten exemplarführenden Zylinder aufgenommen zusätzliche Halteeinrichtungen, in verschiedenen Ausfahrpositionen ebenfalls kulissenartig geführt und

Fig. 8

eine Draufsicht auf die kulissenartige Führung der zusätzlichen Halteelemente am ersten exemplarführenden Zylinder.

It shows:

Fig. 1

the side view of a cylinder configuration according to the invention with a cutting cylinder assigned to the example-leading cylinder,

Fig. 2

Copy guide device movably arranged on the cutting cylinder on a link guide in the retracted state,

Fig. 3

2 the movable specimen guide device explained in the extended state,

Fig. 4

a plan view of the copy guide devices on the cutting cylinder,

5 - 7

Additional holding devices are accommodated on the first specimen-guiding cylinder, also guided in the manner of a backdrop and in different extension positions

Fig. 8

a plan view of the backdrop-like guidance of the additional holding elements on the first exemplar cylinder.

Fig. 1 shows the side view of a cylinder configuration according to the invention in Folder with a cylinder assigned to the specimen leading cylinder Cutting cylinder.

The material web 3, which over the first or the further pair of draw rollers 2 or 4 enters the folder 1, without the interposition of conveyor belts into the cutting gap 12 between the first cylinder 6 and the cutting cylinder 5 transported. The cutting cylinder 5 comprises two Cutting knife 8 and has two copies on its outer surface to record one after the other, one also speaks in this context of double diameter, while the first exemplary cylinder 6, the Folding knife cylinder, in this configuration four copies on his Circumferential surface 11 can accommodate one behind the other. The Copy holding devices on the folding knife cylinder 6 are in the following figures described in more detail. The folding knife cylinder 6 works with the one that also holds four copies in this configuration Folding jaw cylinder 7 together, which is equipped with folding jaws 15. Grippers 20 on the two transport cylinders 16 and 17 take the cross-folded copies from the circumference of the jaw cylinder 7 and direct they to an upper or a lower delivery 18 or 19.

Fig. 2 shows the representation of a cutting cylinder with a backdrop Movable copy guide device, which is in the cutting cylinder retracted state.

The cutting cylinder 5 partially shown here rotates about its axis 21 and is provided on its outer surface 23 with at least one cutting knife 8, which with groove bar on the opposite first specimen leading Cylinder 6, in this example the folding knife cylinder, works together Separate copies from material web 3. The cutting knife 8 is in one Cutting knife storage 35 added, which on one side with Recesses 35.1 is provided. The cutting knife bearing 35 further comprises two clamping strips made of elastic, resilient material 35.2 and 35.3, with which the cutting knife 8 is held.

Below the cutting knife bearing 35, a guide 28 is provided, which only slightly inclined, essentially parallel to the normal 29 on the Rotation axis 21 of the cutting cylinder 5 extends. The guide 28 can include a sliding guide 28.1 similar to which a Support 27 - in the vertical direction - is movable. On the support 27 is one Copy guide device 24 fixed by means of a fastening 25. The top - towards the cutting knife 8 - curved end of the Copy guide device 24 is in the retracted state on the Recess 35.1 of the cutting knife bearing 35. The essentially parallel to the normal 29 extending and retracting the Copy guide device 24 is provided by a vertical one Sliding movement of the support 27 on the sliding guide 28.1, for example one Backdrop guidance - generated. On a shaft 31, a lever 30 is clamped, the extended lever arm connected to the support 27 by means of a bolt 34 is. Via a control roller 32 on a control cam 36, not shown here rolls (see FIG. 4), a rotation of the Adjustment shaft 31 brought about, which by means of the extended lever arm of the Lever 30 is transmitted as a vertical sliding movement on the support 27. The essentially vertical entry and exit movement of the Copy guide device 24 is indicated by the double arrow 26 next to the Copy guide device 24 indicated.

In FIG. 3, the copy guide device 24 explained in FIG. 2 is shown in FIG Cutting cylinder shown extended state.

By means of the above-described movement of the levers 30, 33 around the actuating shaft 31 is the support 27 on which the item guidance device 24 is received, extended from the cylinder 5. In this operating state cover the individual tongues of the copy guide device 24, of which several side by side across the width of the cutting cylinder 5 can be provided, the cutting knife 8. The rotation of the actuating shaft 31st counterclockwise leads to a shift of the support 27 along its sliding guide 28.1 to top dead center. Are in this state the bent ends of the specimen guide means 24 in the illustrated Extended way out of the inside of the cutting cylinder 5.

3 is transferred to FIG. 1 explained at the beginning the first example-leading one arranged opposite the cutting cylinder 5 Cylinder 6 gives the following:

By interaction of the cutting knife 8 with the grooved bar of the first copy-leading cylinder 6, the copies of the material web 3rd separated. Im following the cutting gap 12 Cutting gap outlet 14 occurs through that shown in FIG. 3 Extending movement 26 of the specimen guide devices 24 from the Shell surface 23 of the cutting cylinder 5 for pressing one end of a each new specimen on the peripheral surface 11 of the first copy-leading cylinder 6. Immediately after the cut in the cutting gap 12 cutting blades 8 and grooved beams are used to create new ones Copy ends on the peripheral surface 11 of the first copy leading Cylinder 6 pressed where - as will be shown below - from Holding devices 10 are taken over. For multi-layer material webs 3 is thus a perfect transition of the specimens to the peripheral surface 11 of the first copy-leading cylinder 6 - here the folding knife cylinder - guaranteed.

Fig. 4 gives a top view of the item guide devices on Cutting cylinder again.

In this schematically illustrated top view of the cutting cylinder 5 is right the control roller 32 can be seen, which rolls on a control cam 36, whereby the movement of the actuating shaft 31 is initiated. In turn these are in the End regions attached to the lever 30 with their extended lever arms, which via the bolts 34 to the support 27, the inward and outward movement 26, as in 2 and 3 shown, emboss. At Support 27 are across the width of the Cutting cylinder 5 seen, several copy guide devices 24th arranged; whose bent ends (see Fig. 3) dip into the already mentioned recesses 35.1 of the cutting knife bearing 35 on Cutting cylinder 5 a. The actuating shaft 31 is in bearings in the end faces 5.1 and 5.2 of the cutting cylinder 5 rotatably mounted, which in turn about his Rotation axis 21 rotates.

Fig. 5 shows an additional on the first exemplary cylinder Holding device 10 in an extended position.

On the first copy-leading cylinder 6, which rotates about its axis of rotation 37, grooved bars 39 are added. These are in the peripheral surface 11 of the first copy-leading cylinder 6 inserted and cooperate with cutting blades 8 on cutting cylinder 5 are cut off of copies of the material web 3 in the cutting gap 12.

Mittels des Führungskörpers 48 sind die Halteeinrichtungen 10 an einer Stellwelle 31 - die baugleich zur Stellwelle 31 in den Figuren 2 und 3 ausgeführt sein kann - verdrehbar. Dies erfolgt durch eine Steuerrolle 32, die auf einer Steuerkurvenkontur 51.1 einer Steuerkurve 51 abläuft. Die Steuerrolle 32 ist über einen Hebel 33 - analog zu der Ausführung bei den Exemplarführungseinrichtungen 24 - mit der Stellwelle 31 verbunden und bewirkt deren Verdrehung je nach Steuerkurvenkonturverlauf. Da der Führungskörper 48 auf der Stellwelle 31 geklemmt ist, folgt er deren Verdrehbewegungen im oder entgegen des Uhrzeigersinns. Neben der Verdrehbewegung der Halteeinrichtungen 10 erfordert deren Einfahren in das Innere des ersten exemplarführenden Zylinders 6 auch eine Absenkbewegung der Halteeinrichtungen 10. Zu diesem Zwecke ist der Support 40, auf dessen Oberseite sich die Halteeinrichtungen 10 befinden, über einen in Fig. 5 aus Gründen der Klarheit nicht dargestellten Hebel 44 (s. Fig. 8) mit einer Steuerrolle 43 verbunden, die ihrerseits mit einer in Fig. 5 nur schematisch angedeuteten Steuerkurve 46 zusammenwirkt.

The holding devices 10 consist of a curved end 10.2 which overlaps the respective specimen end above the grooved bar 39 and a guide part 10.1 with which the holding devices 10 are accommodated next to one another on a support 40. The support receiving the holding devices 10 executes an inward and outward movement indicated by the double arrow 50 from the interior of the first cylinder 6 which carries the exemplar, or an inward movement therein. This extension and retraction movement of the holding devices 10 on the first copy-guiding cylinder take place essentially parallel to the normal 38 on the axis of rotation 37 of the first copy-guiding cylinder 6. The support 40 moves along a guide surface 49 of the guide body 48, which is designed as a sliding or link guide can be. The support 40 is provided with a plurality of openings 41, which can be designed as elongated holes or the like. The length of the openings 41 in the support 40 define the top and bottom dead center of the displacement path of the support 50 along the guide surface 49. By means of a fastening 42, the support 40 with the holding devices 10 received thereon and the guide body 48 are connected to one another in such a way that a vertical up and down movement of the support 40 along the guide surface 49 is ensured. The rotating and lowering movements required for the retraction of the holding devices 10 into the first cylinder 6 carrying the exemplar are brought about as follows:

By means of the guide body 48, the holding devices 10 on an actuating shaft 31 - which can be constructed identically to the actuating shaft 31 in FIGS. 2 and 3 - can be rotated. This is done by a control roller 32, which runs on a control cam contour 51.1 of a control cam 51. The control roller 32 is connected to the actuating shaft 31 via a lever 33 - analogous to the version in the case of the item guiding devices 24 - and causes its rotation depending on the course of the control curve. Since the guide body 48 is clamped on the actuating shaft 31, it follows its twisting movements in the clockwise or counterclockwise direction. In addition to the twisting movement of the holding devices 10, their entry into the interior of the first cylinder 6, which is the example, also requires a lowering movement of the holding devices 10. For this purpose, the support 40, on the upper side of which the holding devices 10 are located, can be moved via one in FIG Lever 44 (see FIG. 8), not shown in clarity, is connected to a control roller 43 which in turn interacts with a control cam 46, which is only schematically indicated in FIG. 5.

5 shows an open control cam 46, which is connected to the control roller 43 cooperates. To ensure permanent contact between the control cam contour and To ensure control roller 43, a spring element 45 is provided, which for Maintaining a constant bias between the control roller 43 and the Contour of the control curve 46 ensures. Alternatively, a closed curve 47 used, the installation of a spring element 45 can be omitted because the Control roller 43 is positively guided on both sides in this embodiment, so that it there can be no loss of contact between the treads.

6 shows how the holding devices on the first product-carrying cylinder 6 have moved into an extended position.

A comparison of the relative positions of the control roller 32 to Control cam contour 51.1 and the control roller 43 relative to the control cam 46 shows that both a rotation of the holding devices 10 and one Extending movement of the holding devices 10 from the first leading example Cylinders have taken place. Compared to that shown in Fig. 6 Operating position, the control roller 43 has a certain distance the cam contour 51.1 of the cam 41 moves, which leads to a Rotation of the actuating shaft 31 in a clockwise direction - can be read on gap formed between the guide part 10.1 and the grooved bar 39. At the same time, the control curve 43 has moved relative to the control curve 46, which increases a sliding movement of the support 40 along the sliding surface 49 has - can be read at the top dead center position of the support 40 relative to the Guide body 48 and its guide surface 49. The slot-like Openings 41 are not shown in FIG. 6. The maximum extension movement of the Holding devices 10 over the circumferential surface 11 of the first example leading Cylinder 6 falls when it reaches the lowest - based on the control curve 46 Point of the cam 46 together by the control roller 43. The same applies to the use of closed curve 47.

Fig. 7 finally shows the holding devices 10, after which they again completely behind the circumferential surface 11 of the first cylinder 6 holding the exemplar have returned.

A comparison to the previous Fig. 6 shows that the Relative positions of the control roller 32 to the cam 41 and of the control roller 43 to the control curve 46 compared to FIG. 6 have changed again. The one on the Control cam contour 51.1 running control roller 32 causes another Twist control shaft 31, whereby the bent end 10.2 of Holding device 10 next to the grooved bar 39 is rotated so that immediately thereafter an immersion movement of the holding devices 10 in the Can connect cylinder interior.

After the holding devices 10 into the free space next to the grooved bar 39 have been rotated, the lever 44 (FIG. 8) with the control roller 43 connected support 40 by following the curve contour of the control curve 46 Control roller drawn into the first copy-leading cylinder 6. The on the Control cam 46 running control roller 43 has a - in this operating position the contour of the control curve related - high position reached. In this Operating position, the spring element 45 between the support 40 and the Guide body 48 compressed. In the state shown in Fig. 7 the holding devices 10 at the bottom dead center of the substantially vertical running entry movement into the cylinder interior.

Fig. 8 shows the top view of a backdrop-like guidance of the additional Holding elements on the first specimen-leading cylinder.

From the top view of the first sketched here only schematically exemplary cylinder 6 with only stylized, not detailed reproduced end faces, it can be seen that the actuating shaft 31 in this End faces is stored. The rotation of the control shaft 31 is in this by the initiated on the lever 33 control roller 32 initiated. The control roller 32 runs on the curve contour 51.1 of the control curve 51 and already ensures the above described rotational movement of the holding devices 10. In Fig. 8 is above the displacement path predetermined by the openings 41 can also be seen, the holding devices 10 on support 40 when they are Cover extension movement from inside the cylinder. Support 40 moves itself on the sliding surface 49 of the not shown here Guide body 48 which is clamped on the circumference of the actuating shaft 31. 8 that the control rollers 43 are connected to the support 40 via lever 44 and the sliding movement in initiate this after the rotational movement of the holding devices 10 has taken place. The open or closed curve 46 or 47 is in FIG. 8 not shown.

Returning to the illustration according to FIG. 1, the above results presented a working sequence of the invention as follows Holding devices 10 and the invention Copy Guides 24.

After in the cutting gap 12 a separation of a copy from leading end of a material web 3 has taken place, one Extending movement of the copy guide devices 10 from the inside of the Cutting cylinder 5 instead. By the copy guidance devices 10 that leading end of the material web 3 against the peripheral surface 11 of the Cutting cylinder 5 opposite first copy-leading cylinder 6 pressed. The fluttering or the dreaded corner turning can help multilayer material webs of the leading end of the material web 3 in Cutting gap tracking 14 does not occur. The copy guidance devices 10 press the leading end of the new from the material web 3 copy to be separated against the peripheral surface 11 of the first copy-leading cylinder 6. At the same time, the first copy-leading cylinder 6 - here the folding knife cylinder - provided Holding devices 10 activated by this to grasp the copy end in substantially parallel to the normal 38 on the axis of rotation 37 of the cylinder 6 extend, overlap the end of the specimen with the described rotary movement and then - due to the interaction of the control roller 43 with the Control cam 46 - along the guide surface 49 into the interior of the first Retract copy-leading cylinder 6. This state is shown in Fig. 5. In this position, the curved ends 10.2 overlap Holding devices 10 the end of the newly to be separated from the material web 3 Copy and fix this above the grooved beam 39 on the Circumferential surface 11 of the first cylinder 6 holding the exemplar. For a collision of active item guidance devices 24 with which the end of the To avoid specimen-taking holding devices 10, these are offset from one another across the width of the respective cylinders 5, 6 to enable a comb-like overlap. During the further joint rotation of the first leading example Cylinder 6 with the cutting cylinder 5 drive it Copy guides 24 back into the cutting cylinder 5 after that of the copy guide devices 24 on the peripheral surface 11 of the first copy leading cylinder 6 pressed end of a new one to be separated Copy of the holding devices 10 is overlapped.

parts list

1

folding

2

first pair of pull rollers

3

web

4

second pair of pull rollers

5

cutting cylinder

5.1

end face

5.2

front

6

first exemplary cylinder

7

second exemplary cylinder

8th

cutting blade

9

folding blade

10

holder

10.1

guide part

10.2

curved end

11

peripheral surface

12

cutting gap

13

Cutting gap inlet

14

Cutting gap outlet

15

jaws

16

upper transport cylinder

17

lower transport cylinder

18

upper display

19

lower display

20

Gripper (transport cylinder)

21

Axis (cutting cylinder)

22

Cutting blade storage

23

lateral surface

24

Copy guide device

25

attachment

26

A / extension direction

27

Support

28

link guide

29

Normal to axis 21

30

lever

31

wave

32

control roller

33

lever

34

bolt

35

Cutting blade storage

35.1

recess

35.2

terminal block

35.3

terminal block

36

cam

37

Axis of the first leading cylinder

38

Normal to axis 37

39

Nutenbalken

40

Support

41

opening

42

attachment

43

cam

44

cam lever

45

feather

46

open curve

47

closed curve

48

guide body

49

guide surface

50

A / extension movement

51

cam

51.1

Cam contour

Claims (19)

1. Folder for a rotary printing press having at least one product guiding cylinder, on of the product guiding cylinders being equipped with additional gripper devices for gripping an end of a product,
   characterized in that the inward/outward movements (26, 50) of gripper devices (10) at the first product guiding cylinder (6) and of product guiding devices (24) at a cutting cylinder (5) co-operating with the first product guiding cylinder (6) are substantially parallel with the normal (29, 38) to the axes of rotation (21, 37) of the cylinders (5, 6).
2. Folder for a rotary printing press according to claim 1,
   characterized in that the holding devices (10) and the product guiding devices (24) are arranged on displaceable supports (27, 40).
3. Folder for rotary printing press according to claim 2,
   characterized in that the supports (27, 40) are displaceable on sliding guides (28.1, 49).
4. Folder for rotary printing press according to claim 1,
   characterized in that the product guiding devices (24) are guided in a coulisse-like manner substantially parallel with the normal (29) of the axis of rotation (21).
5. Folder for rotary printing press according to claim 2,
   characterized in that the support (27) of the product guiding devices (24) is actuatable via a lever connection (30) by rotating an adjustment shaft (31).
6. Folder for rotary printing press according to claim 5,
   characterized in that the adjustment shaft (31) is actuatable by means of a control roller (32).
7. Folder for rotary printing press according to claim 5,
   characterized in that the adjustment shaft (31) is actuatable by means of an accumulator.
8. Folder for rotary printing press according to claim 2,
   characterized in that the product guiding devices (24) are received on the support (27) adjacent to each other and spaced apart from each other.
9. Folder for rotary printing press according to claim 1,
   characterized in that in the retracted condition the product guiding devices (24) penetrate into recesses (35.1) of the cutting blade support (35).
10. Folder for rotary printing press according to claim 2,
    characterized in that the support (40) comprises openings (41) through which fastening means (42) extend.
11. Folder for rotary printing press according to claim 2,
    characterized in that by means of connecting webs (44) the support (40) is connected to a control roller (43) which co-operates with a control cam (46).
12. Folder for rotary printing press according to claim 11,
    characterized in that the control cam is an open control cam (46).
13. Folder for rotary printing press according to claim 11,
    characterized in that the control cam is a closed control cam (47).
14. Folder for rotary printing press according to claim 11,
    characterized in that between the support (40) and the guide body (48) a spring element (45) is provided for maintaining a permanent pre-tension between the open cam (465) and the control roller (43).
15. Method for transferring an end of a web of material to a first moving surface after a cutting operation, the method having the following method steps:

    severing a product from a web (3) of material in a cutting nip (12) between a first moving surface (11) and a second moving surface (23),

    moving product guiding devices (24) outward and bringing the leading end of the web (3) of material into contact with the first moving surface (11) when passing a cutting nip outlet (14),

    gripping the leading end of the web (3) of material by means of holding devices (10) moving out of the first moving surface (11) while passing the cutting nip outlet (14), and

    retracting the product cutting device (24) into the second moving surface (23).
16. Method for transferring an end of a web of material according to claim 15,
    characterized in that the outward movement (50) of the holding devices (10) at the first moving surface (11) is directed counter to the transport direction of the web (3) of material through the cutting nip outlet (14).
17. Method for transferring an end of a web of material according to claim 15,
    characterized in that the outer sides of the product guiding devices (24) act upon the front end of the web (3) of material and bring it into contact with the first moving surface (1).
18. Method for transferring an end of a web of material according to claim 15,
    characterized in that a rotational movement is superimposed on the inward/outward movement (50) of the holding devices (10).
19. Method for transferring an end of a web of material according to claim 18,
    characterized in that during the inward/outward movement (50) of the holding devices (10) by means of the control roller (43) rolling on the control cam (46, 47) the guide body (48) forming the sliding surface (48) for the support (40) is swivelled by rotating the adjustment shaft (31).

Images