EP1457330B1 - Independent drive for the second folding blade cylinder - Google Patents

Abstract

The folder, at a rotary printing press, has a folding jaw cylinder (9) and a folding blade cylinder (19) which is moved in and out of action in a swing movement on the folder frame. The folding blade cylinder can be disengaged mechanically from the electromotor which drives the other cylinders (4,7,9) of the folding assembly.

Description

The invention relates to a folding apparatus of a rotary printing press according to the preamble of claim 1.

By the DE 195 09 947 A1 as well as the DE 195 25 169 C2 Folding machines are known for a rotary printing press, which have a jaw cylinder and a cooperating with the jaw cylinder folding cylinder. A disadvantage of these folders is that the product is complicated. Thus, a signature coming from a Schneidnutenzylinder must first be passed to a jaw cylinder and from there to a Querfalzzylinder before it reaches a belt control system, which conveys the product to a boom. The cross folding cylinder of these folders must constantly run in production, even if it is not used to produce a transverse fold, as it is needed to promote the signatures. Transmission or transfer errors between the cylinders can lead to so-called "paper stoppers", which can result in damage to the cylinders.

The DE 43 18 133 A1 describes a folder which selectively produces products with a transverse fold in a first mode and products with an additional second transverse fold in a second mode. For this purpose, a first and second folding blade cylinder is arranged, wherein the signatures are stripped by the products of the second folding blade optionally by means of bands.

The DE 36 36 244 C2 discloses a folder having a pivotable stapling cylinder which selectively cooperates with a first or second jaw cylinder.

The DE 44 07 375 A1 discloses a folder with at least one Jaw cylinder and a cooperating in a working position with the jaw cylinder first folding blade and a second folding blade, wherein the second folding blade from the working position is movable into a rest position.

By the EP 0 729 910 A2 and the DE 42 08 353 A1 are known folding machines with a jaw cylinder and a first and second folding blade, wherein the first folding blade and the jaw cylinder are driven jointly by an electric motor.

The DE 76 06 107 U discloses a sheet folding machine whose individual folding units are driven by electric motors.

The invention has for its object to provide a folder.

The object is achieved by the features of claim 1.

The advantages achieved by the invention are, in particular, that damage to the folder by paper stoppers are avoided, and that the accessibility of the parts of the folder is simplified for maintenance purposes.

Furthermore, to be achieved by shutdown of unnecessarily revolving cylinders to make the folder energy-saving, wear-prone and quieter.

By the displaceable folding cylinder is mounted between two side parts which are pivotable against side frames of the folder, a modular design of the folder is made possible. The use of a dedicated motor to drive the displaceable folding cylinder enables it to decouple its movement from vibrations caused in the folder by variably loaded other rotationally driven parts such as a cutting or puncturing roller.

Another advantage of using the dedicated engine is that, unlike a common drive of folding cylinder and jaw cylinder by tooth engagement, by suitable control of this motor, the phase angle of the folding cylinder relative to the cooperating with him jaw cylinder is easily changed. Thus, in particular a coupling of the rotation of the motor to the width of the jaw gap can be provided such that a folding blade of the folding cylinder engages centrally in each width of the jaw gap in this. The folder is thereby very easy and quickly adaptable to the processing of signatures of different thicknesses.

Another advantage is that the assembly with a second transverse fold has no significant effect on the design of the basic unit of the folder d. h., That the usual bearing holes and necessary for the gear drive oil space omitted and do not require an increase in the racks of the folder.

According to a preferred embodiment, the folder further comprises a stationarily mounted folding cylinder. The stationarily mounted folding cylinder can then serve to produce a first transverse fold on the product, whereas the displaceable folding cylinder can be used to produce a second transverse fold. While z. B. usually a large part of the circulation of daily newspapers, which is intended for subscription or for sale on the street, is made with a simple transverse fold, for that part of the edition, which is intended for the mail order, a second transverse fold is required to To bring the newspaper to a format suitable for mailing. The folder according to the invention allows the production of the newspaper with or without second transverse fold, being pivoted for the support part without second transverse fold of the movable folding cylinder in the rest position and its drive can be switched off when the folder is running.

Further, in a folder with two folding cylinders is preferred that the Jaw cylinder having pairs of jaws, wherein the second jaw of a pair cooperates with a different folding cylinder. This allows a simplification of the product guide, because in such an embodiment, a signature can be picked up by a holding device of the two folding cylinders and the signature folded by pushing into the gap of the first jaw by means of the folding blade of the folding cylinder and transferred to the jaw cylinder; Subsequently, the folded product in this way can be pressed by a folding blade of the other folding cylinder in the gap of the second folding door of the pair and so get its second transverse fold, without requiring a transfer to another cylinder is required. The finished folded product can therefore be transferred directly from the jaw cylinder to a tape guide system, and the product promotion is simplified.

In order to enable a respective central fold in products of different formats, the two columns of the two cooperating Falzklappenpaare are mutually advantageously circumferentially adjustable. To the same extent, the grippers adjust in the folding cylinder.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Fig. 1

einen schematischen Schnitt durch einen Falzapparat gemäß der Erfindung in einer ersten Phase des Falzvorgangs;

Fig. 2

einen partiellen Schnitt entsprechend dem aus Fig. 1 in einer zweiten Phase des Falzvorgangs;

Fig. 3

einen Teilschnitt entspricht Fig. 2 in einer dritten Phase des Falzvorgangs;

Fig. 4

einen Teilabschnitt des Falzapparats mit in eine Untätigkeitsstellung verlagertem Falzzylinder;

Fig. 5

ein Leit- oder Andrückelement;

Fig. 6

eine Greiferregulierung bzw. Falzklappenregulierung im axialen Schnitt;

Fig. 7

eine partielle Seitenansicht des Falzapparats;

Fig. 8

eine schematisierte Darstellung des Antriebs des verlagerbaren Falzzylinders;

Fig. 9

eine Weiterentwicklung des Falzapparats in einem partiellen Schnitt entsprechend der Fig. 4.

Show it:

Fig. 1

a schematic section through a folding apparatus according to the invention in a first phase of the folding operation;

Fig. 2

a partial cut according to the Fig. 1 in a second phase of the folding process;

Fig. 3

a partial section corresponds Fig. 2 in a third phase of the folding process;

Fig. 4

a portion of the folder with displaced into an idle position folding cylinder;

Fig. 5

a guiding or pressing element;

Fig. 6

a gripper regulation or jaw regulation in axial section;

Fig. 7

a partial side view of the folder;

Fig. 8

a schematic representation of the drive of the displaceable folding cylinder;

Fig. 9

a further development of the folding apparatus in a partial section corresponding to Fig. 4 ,

Fig. 1 shows a schematic section of a folding apparatus of a rotary printing press. A in the folder coming from a (not shown) Forming web incoming train 1 or a multi-web strand initially passes a pair of draw rollers 2 and then reaches a gap 3 between a cutting cylinder 4 and a stationary mounted first folding blade 7. The cutting cylinder 4th carries at its periphery knives, which cooperate with knife grooves of the first folding blade 7 and cut the web 1 into individual signatures. The individual signatures are detected by a holding device of the first folding blade cylinder 7, such as a gripper or puncturing needles, and the signature is thus guided in the counterclockwise direction of the figure between the first folding blade cylinder 7 and a first guide plate 6 embracing the lower region of the first folding blade cylinder 7.

The first baffle 6 terminates in the vicinity of a gap 8 between the first folding blade 7 and a jaw cylinder 9. This jaw cylinder 9 has at its periphery a number of first jaws 11, which are equally spaced in the circumferential direction. At the in Fig. 1 As shown, the jaw cylinder 9 has three first jaws 11 at an angular distance of 120 °. The distance between two first jaw flaps 11, measured on the circumference of the jaw cylinder 9, corresponds to the length of an unfolded signature. The first jaws 11 each have a ridge-shaped jaw 12 fixed to the jaw cylinder 9 and a jaw 13 which is pivotally coupled to the rotary movement of the jaw cylinder 9. The coupling of the movement of the pivotable jaw 13 to the rotation of the jaw cylinder 9 takes place by means of a in the Fig. 1 not shown cam. This opens the gap of the first jaw 11 shortly before it reaches the gap 8, so that a folding blade mounted on the first folding blade 7 during the passage through the gap of the first jaw 11, the signature carried by the first folding blade 7 signature in the gap of the first jaw 11 can push into it. This creates a first, central transverse fold on the signature. While after the passage through the gap 8, the folding blade of the first folding blade 7 is retracted, close the jaws 12; 13 of the first folding door 11, so that the signature remains stuck in the first folding door 11 and is thus taken over by the jaw cylinder 9 and transported further.

Up to this point, the operation of the folder corresponds to that of conventional folders, which is why a more detailed representation of the cutting cylinder 4 and the first folding blade 7, also in the Fig. 1 , can be dispensed with.

A second baffle 14 closes the Austnttszwickel of the second gap 8. It serves to fold down the front half of the signature released by the holding device of the first folding-blade cylinder 7, so that the signature with the fold advances from the jaw cylinder 9 is further promoted. Fig. 1 shows a signature, denoted 16, at this stage of the processing, wherein the formerly leading part 17 of the signature 16 along the second baffle 14 passes along.

At the second baffle 14, a control or pressing element 18 connects, the structure in Fig. 5 is shown in more detail and will be described later. This guide or pressure element 18 is located in the Emgangszwickel a third gap 10 which is defined between the jaw cylinder 9 and a second folding blade 19. This second folding blade cylinder 19 carries on its circumference two diametrically opposed holding devices, here in the form of grippers 21. Since the number of grippers 21 and the folding blade 22 is smaller than that of the first jaws 11, and the diameter of the second folding blade 19 in Ratio smaller than that of the jaw cylinder 9. This facilitates the arrangement of the two folding blade cylinders 7; 19 and described later on a tape guide system 27 on the circumference of the jaw cylinder. 9

In the in Fig. 1 phase of the folding process is one of these two grippers 21 just about to take over the signature 16 in the region of its first transverse fold of the opening first jaw 11. The second folding blade 19 also carries two folding blades 22. The distance between the gripper 21 and subsequent folding blade 22 on the second folding blade 19 is adjustable and is conveniently set to a quarter of the length of the signature 16 to the folding blade 22 a second transverse fold in the already once transversely folded signature 16 in the middle to bring.

This second folding blade cylinder 19 may have at its periphery a plurality of equally spaced holding devices, here in the form of grippers 21 and the number 2. In the same manner as those of the holding devices and the folding blades are placed, according to the format length equidistant from the holding devices , The smaller the number of holding devices or Folding blade, the smaller the design of the second folding blade cylinder can be performed. In the least case, a holding device and 1 folding blade can be present.

The phase of generation of the second transverse fold is in Fig. 2 illustrated by a partial section of the folder. In this phase, the first transverse fold of the signature 16 is lifted by the gripper 21 from the surface of the jaw cylinder 9; the first jaw 11 is empty and open. A second folding flap 23 is arranged on the circumference of the folding jaw cylinder 9 at a distance from the first folding flap 11, which corresponds to the distance between the gripper 21 and the folding blade 22 on the second folding blade cylinder 19. Also, the distance between the first and second jaw 11 and 23 is adjustable.

The folding blade 22 pushes the signature 16 in the open gap of the jaw 23 and the signature 16 is clamped in the gap. At the same time, the gripper 21 releases the first transverse fold of the signature 16.

Guide brushes 24 are arranged in the output gusset of the gap between the second folding blade cylinder 19 and jaw cylinder 9. As in Fig. 3 can be seen, they serve to pivot the two legs of the now double-folded signature 16 against the surface of the jaw cylinder 9 and so to complete the folding process that is 26 after folding through the gap between the guide brushes 24 and the jaw cylinder 9 finished product in Fig. 2 to recognize

An Indian Fig. 1 schematically illustrated belt guide system 27 with guided around rollers 28 belts 29 takes over the product 26, approximately in his in Fig. 2 shown position of the second jaw 23 is released, and it leads to a paddle wheel 31, which stores the product 26 geschuppt in a conventional manner on a belt boom 32, wherein the guide tongues 100 at a distance from the stopper 101st are pivoted, which corresponds approximately to the length of the product 26.

The second folding blade cylinder 19 forms, together with the guiding or pressing element 18 and the guide brushes 24, a modular unit which consists of the in Fig. 1 to 3 shown working position of the second folding blade cylinder 19 is displaceable in an inactivity position, in Fig. 4 is shown. In this inactivity position, the second folding blade cylinder 19 is pivoted about an axis 33 at an angle of about 105 ° to the working position, instead, a third guide plate 34 is pivoted onto the jaw cylinder 9 and thus forms a continuous guide gap 36 for the signature 16, the extends substantially without interruption from the second guide plate 14 to a guide body 37 and further to the first roller 28 of the tape guide system 27. The third baffle 34 prevents in this way that the freshly folded signature 16 unfolds on its way from the end of the second baffle 14 to the tip of the guide body 37 again when the second folding blade cylinder 19 is in its inactivity position. The guide tongues 100 are pivoted away at a distance to the stop 101, which corresponds approximately to the length of the product 26.

Thus, by simply pivoting the assembly formed by guide or pressing element 18, second folding blade 19 and guide brushes 24 between production with single and double transverse fold can be switched. Since the second folding blade 19 has no more transport function in the production with a simple transverse fold, its drive can be turned off in the idle position, even if the folder operates.

Fig. 5 shows in detail the structure of the guide or pressing element 18. It comprises a support 38 fixedly connected to a (not shown) side part (74, see Fig. 7 ), which at the same time forms a holder for the axis 33 of the second folding blade cylinder 19 and carries the guide brushes 24. An articulated to the carrier 38 pivot arm 39 carries at one end a rotatable roller 41 and at the other end two holes for a screw 42 and a threaded pin 43. The threaded pin 43 is axially adjustable and has a support 38 opposite the tip 44. This tip 44 forms a stop which pivotal movement of the roller 41 in the counterclockwise direction Fig. 5 limited. The screw 42 extends through a bore of the carrier 38 and carries at its distal end two knurled nuts 46; 47, of which a knurled nut 46 for adjusting the pivotal movement of the roller 41 and the other knurled nut 47 serves to counter the first knurled nut 46. A spring 48, z. B. a coil spring 48 exerts a torque in a clockwise direction on the pivot arm 39.

The setting of the threaded pin 43 specifies the maximum distance by which the roller 41 can move away from the latter when passing a signature 16 between it and the jaw cylinder 9 by pivoting the pivoting arm 39. This maximum distance is expediently set to a value which, with slight play, corresponds to the expected thickness of the single transverse folded signature 16. If, in the case of a Papierstopfers the thickness of the signature 16 is greater, and the roller 41 is pressed over the predetermined by the threaded pin 43 degree up, thereby the entire assembly from the working position pivoted upward, and damage to the sensitive moving parts of Jaw cylinder 9 and second folding blade 19 is avoided.

Alternatively, a servomechanism may be provided which measures the force transmitted from the roller 41 to the carrier 38 and, when a limit is exceeded, drives an actuator to swing the second folding blade cylinder 19 out of its operative position.

As Fig. 7 shows, can also on the electric motor 73 which acts on the axis 33, the Anand Abschwenkung the folding blade 19 causes and with an electrical standstill torque against the gas spring 75 the folding blade cylinder 19 holds down in working position, by torque limitation in case of overload Paper jam the pan are triggered.

In case of power failure, the gas spring 75 alone takes over the function of lifting, in order to achieve a safety distance between jaw cylinder 9 and folding blade cylinder 19 at the time of unwinding, the gripper 21 and folding blade 22 protects. Until the time of coasting, the synchronous deceleration is fed by the remaining voltage from the DC link.

A second task of the guiding or pressing element 18 is to ensure a low-friction guidance of the signature 16. Due to its rotatability, the roller 41 exerts a significantly lower friction on a continuous signature 16 than would be the case with a stationary guide plate such as the guide plate 14. Therefore, at the moment the transfer of the first transverse fold to the gripper 21 of the second folding blade cylinder 19 at most low braking frictional forces act on the signature 16, which simplifies the transfer and improves its accuracy

As already stated, in the jaw cylinder 9, the first and second jaws 11; 23 and the second folding blade 19, the gripper 21 and the folding blade 22 at a distance from each other adjustable. Fig. 6 shows in a schematic section a structure of a rotatable suspension by which such adjustment is controllable. The construction is described here with reference to the jaw cylinder 9, but is transferable to the second folding blade cylinder 19. The suspension comprises a flange 50, which is attached to one of its end faces, here the inner end face 49, on a side frame 51 of the folder. A cylindrical extension 52 engages through an opening of the side frame 51 into the interior of the folder; in an axial bore of the extension 52, a spindle 53 is guided. The spindle 53 carries at its end facing the interior of the folder a thread 54 on which a nut 56 rides A rigidly connected to the nut 56 anti-rotation pin 57 engages in a blind hole 58 of the extension 52 a. The nut 56 is thereby rotationally fixed held, but is displaced by a rotation of the spindle 53 in the axial direction back and forth.

The nut 56 carries at its outer periphery a bearing 59, z. B. a deep groove ball bearing 59. About the deep groove ball bearings 59 are axial actuating forces from the nut 56 on a rotatable adjusting drum 61; 77 transferable. The adjusting drum 61; 77 is further supported by an axially displaceable bearing 62, such as a needle bearing, on the outer circumference of the extension 52. The adjusting drum 61; 77 carries at its outer periphery two helical gears 63; 64; 82; 83, each with different helix angles. The two helical gears 63; 64; 82; 83 engage in two sprockets 66; 67; 84; 86, of which a sprocket 67; 86, the lateral surface of the jaw cylinder 9 and the fixed firmly connected to the lateral surface first jaws 11 carries; the other ring gear 66; 84 is connected to the adjustable second jaws 23.

A rotation of the spindle 53 causes an axial displacement of the adjusting drum 61; 77 and thus one depending on the helix angle of the helical gears 63; 64, 82; 83 different rotation of the two sprockets 66, 67; 84; 86 relative to each other. The stroke of the rotation depends on the difference of the helix angle and the diameter of the jaw cylinder 9. A stroke of a few centimeters relative to the circumference of the jaw cylinder 9 is fully sufficient for most practical applications.

In order to achieve the radian measure between the jaws 11 and 23 and that between the grippers 21 and the folding blade 22 simultaneously and in the correct ratio, both adjustments are respectively Fig. 6 (meshing in the jaw cylinder 9 and the folding blade 19) with an actuator which acts on the spindle 53, equipped.

At two points remote from the axis 33, an adjustable stop 78 is attached to the side frame 51. While the contact of the side member 74 with the stop 78 activates the working position of the second folding blade 19, triggers the contact of the side part 74 with the stop 80, the rest position of the second folding blade 19 from.

With the help of the stop 78, the position of the second folding blade 19 is adjustable relative to the jaw cylinder 9 in the working position regardless of the positioning accuracy of the electric motor 73 and der Untersetzungsgetriebes.

The stoppers 78 and 80 further include an initiator or switch which triggers a stop on contact with the side member 74 on the electric motor 73 and releases other drive motors on the folder back to the barrel, the second electric motor 76 included.

A non-contact state of the side part 74 to the stops 78 and 80 triggers except for the electric motor 73 in all drive motors in the folder a stop, the second electric motor 76 included.

As also described elsewhere, the electric motor 73 exerts in the working position of the second folding blade cylinder 19 over a predetermined standstill moment a pressure on the stopper 78 and on the gas spring 75, which is thus pressed and represents a counterforce. If, as a result of a paper jam, the pressure between the two cylinders 9 and 19 is too great and there is a risk of machine damage, the standstill torque on the electric motor 73 is overcome. The electric motor 73 comes into action and lifts over the gear and with the help of the gas spring 75, the second folding blade cylinder 19 from the work area upwards. All motors on the folder including the second electric motor 76 are stopped.

Fig. 7 shows a schematic side view of a part of the folder. It can be seen an upper edge 68 of the side frame 51 of the folder. Between the side frame 51 and an opposite side frame, not shown, are the cutting cylinder 4, the first folding blade cylinder 7, the jaw cylinder 9, the tape guide system 27 and the paddle wheel 31 are arranged. The scope of in the Fig. 7 On itself of the side frame 51 concealed jaw cylinder 9 is indicated by a dashed line 71. At the upper edge 68, a housing 72 is mounted with an electric motor 73. The housing 72 contains z. Example, a reduction gear for transmitting the driving force of the electric motor 73 to the axis 33 to which, as already explained, the second folding blade 19 is pivotable from its working position into the inactivity position. The second folding blade cylinder 19 is rotatably mounted between two side parts 74, one of which in the Fig. 7 can be seen, and that the side part is shown in the working position by a solid outline and in the inactivity position by a dashed outline; the axis 33 is fixedly connected to both side parts 74. On the side facing away from the viewer side of the side part 74, a direction indicated by a dashed outline second electric motor 76 is mounted by a pinion 81, via a likewise indicated by dashed lines adjusting drum 61; 77 rotatably drives the second folding blade cylinder 19. Between the two side parts 74, the guiding or pressing element 18 and the guide brushes 24 are also mounted.

Said elements 74, 76, 77, 78, 18, 19 and 24 together with the housing 72 and the electric motor 73 form a self-contained module which can be removed from the folder when not in use. This modular construction also makes it possible to produce simple and inexpensive ones To build folding machines that lack the module, but are equipped for the subsequent installation of such a module. This allows a printing company to minimize investment in a folder as long as there is no need for double cross-fold products; however, if this need arises, the folder can be made suitable for double cross rebate production by purchasing the module in a cheaper and easier and space efficient manner.

A control circuit (not shown) controls the rotational movement of the second Electric motor 76 and thus the second folding blade 19 exactly synchronously with the rotational movement of the jaw cylinder 9. It controls the relative phase of the jaw cylinder 9 and the second folding blade 19, taking into account the set on the second jaws 23 for receiving the signature 16 gap width, so that guaranteed is that a folding blade 22 of the second folding blade cylinder 19 always hits centrally in an associated jaw gap.

Fig. 8 The second electric motor 76 drives a pinion 81 via a coupling 79, which serves to shield the second electric motor 76 against irregularities in the rotational movement of the downstream transmission. This gear includes, in addition to the pinion 81 already with reference to Fig. 7 mentioned adjusting drum 61; 77. How to get in Fig. 8 recognizes, has this adjusting drum 61; 77, two helical gears 63; 64; 82; 83, of which only a helical gear 82 meshes with the pinion 81. The structure of the adjusting drum 61; 77 corresponds to that with reference to Fig. 6 described structure: the teeth 82; 83 are helical gears with different helix angle as the helical gears 63; 64, and they are axially displaceable by means of a rotary spindle driven mechanism. Due to the axial displacement is an angular offset between two of the helical gears 82, 83 driven gears 84; 86 adjustable. The gear 84 drives via a hollow shaft 87 and two in more detail Fig. 1 to be recognized arms 88 which are connected by means of cross members 90 in the axial direction with each other, the rotational movement of the folding blade 22 at; the gear 86 drives via a guided through the hollow shaft 87 shaft 89, the rotation of the shell of the second folding blade 19 and the gripper 21 at.

The FIG. 8 also schematically shows pivot arms 69, which are each connected to one of the folding blade 22 and gripper 21 and roll firmly on one of the side panels 74 connected cam 70 and so each coupled to the rotational position of the second folding blade 19 opening and closing movement of the gripper 21 or Ausschwenkbewegung the folding blade 21 ensure.

For the rotary drive of the spindle 53 on the jaw cylinder 9 and the functionally identical spindle of the adjusting drum 61; 77 coupled electric motors can be provided, it being ensured by the coupling that the distances between the first and second jaws 11; 23 on the one hand and between grippers 21 and folding blades 22 on the other hand always varies to the same extent.

Fig. 9 shows a developed embodiment of the folder in a partial section analogous to that Fig. 4 , Components already related to the Fig. 1 to 8 have been described here bear the same reference numerals and will not be described again. The second folding blade cylinder 19 is located in Fig. 9 in the idle position, in which between him and the jaw cylinder 9 is a wide gap 95. A tape guide system 91 has two movable rollers 92; 93, which, when the second folding blade 19 is in the working position, in an inactive position (not shown) behind the Leitbürsten 24, and which are coupled to the position of the second folding blade 19, that they pivot on the second folding blade 19 in its inactivity against the transport direction of the signature 16 on the jaw cylinder 9 in the in Fig. 9 advance shown positions in the direction of arrow 94. A further roller 96 of the tape guide system 91 is displaceable transversely to the general orientation of the tape guide system 91 in the direction of the arrow 97 against a spring force to that of the rollers 92; 93 guided belt 98 regardless of the position of the rollers 92; 93 tense to keep. In the in Fig. 9 shown position of the tape guide system 91 of this tape 98 touches the circumference of the jaw cylinder 9 on that part of its circumference, where open the first jaws 11 to release the promoted from the inside signature 16. The guide body 37 is pivotally suspended and touches the surface of the jaw cylinder 9 under the pressure of the belt 98. The signature 16 released by the first jaw 11 becomes so lifted by the guide body 37 from the jaw cylinder 9 and further promoted between the guide body 37 and the belt 98. At a rear end in the transport direction of the guide body 37 includes a second band 99 of the tape guide system 91 at. Between the two belts 98; 99, the signature 16 is conveyed to the entrance of a folding device (not shown) for producing a second longitudinal fold. The design of the Fig. 9 Thus, optionally, depending on the position of the second folding blade 19, the generation of a second transverse fold or a second longitudinal fold on the product 26th

A further development not shown in a separate figure comprises both the pivotable third guide plate 34 Fig. 4 and the tape guide system 91 Fig. 9 , In this embodiment, the movement of the rollers 92; 93 coupled to both the pivoting movement of the folding blade 19 and the movement of the third guide plate 34. This coupling causes when the second folding blade 19 is in its inactivity position, either the guide plate 34 can be folded against the jaw cylinder 9, as in Fig. 4 represented, or the tape guide system 91 engages in the intermediate space 95. With this configuration, the production is thus possible either with a simple transverse fold, with a double transverse fold or with a simple transverse and second longitudinal fold.

LIST OF REFERENCE NUMBERS

1

train

2

drawing rollers

3

gap

4

cutting cylinder

5

-

6

Baffle, first

7

Folding knife cylinder, first

8th

gap

9

jaw cylinder

10

gap

11

Folding flap, first

12

jaw

13

jaw

14

Baffle, second

15

-

16

signature

17

Part (16)

18

Guide or pressing element

19

Folding knife cylinder, second

20

-

21

grab

22

folding blade

23

Folding flap, second

24

Leitbürsten

25

-

26

product

27

ribbon Control System

28

role

29

tape

30

-

31

paddle wheel

32

band boom

33

axis

34

Baffle, third

35

-

36

guide gap

37

guide body

38

carrier

39

swivel arm

40

-

41

role

42

screw

43

Set screw

44

top

45

-

46

knurled nut

47

knurled nut

48

Spring, spiral spring

49

faces

50

flange

51

side frame

52

extension

53

spindle

54

thread

55

-

56

mother

57

anti-rotation pin

58

blind

59

Bearings, deep groove ball bearings

60

-

61

provides drum

62

camp

63

helical teeth

64

helical teeth

65

-

66

sprocket

67

sprocket

68

top edge

69

swivel arm

70

cam

71

Line, dashed

72

casing

73

Electric motor, first

74

side panels

75

Gas spring

76

Electric motor, second

77

provides drum

78

attack

79

clutch

80

attack

81

pinion

82

helical teeth

83

helical teeth

84

gear

85

-

86

gear

87

hollow shaft

88

poor

89

wave

90

traverse

91

Tape guide system

92

role

93

role

94

arrow

95

gap

96

role

97

arrow

98

tape

99

tape

100

guide tongue

101

attack

Claims (3)

1. A folder with at least one folding-jaw cylinder (09) and a first folding-blade cylinder (07) and a second folding-blade cylinder (19), characterized in that the first folding-blade cylinder (07) and the folding-jaw cylinder (09) are jointly driven, coupled in a positively locking manner, by a first electric motor (73), and the second folding-blade cylinder (19) is driven independently by the second electric motor (76).
2. A folder according to Claim 1, characterized in that the two folding-blade cylinders (07; 19) are arranged so as to co-operate with the folding-jaw cylinder (09).
3. A folder according to Claim 1, characterized in that the folding-jaw cylinder (09) comprises folding jaws (11; 23) with an adjustable gap width, and the rotation of the electric motor (76) of the second folding-blade cylinder (19) is coupled to the width of the gap of the folding jaws (23) in such a way that a folding blade (22) of the folding-blade cylinder (19) engages centrally in the gap at any width of the said gap.

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