EP0911291B1 - Folding device in a high speed folding apparatus - Google Patents

Folding device in a high speed folding apparatus Download PDF

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Publication number
EP0911291B1
EP0911291B1 EP19980117878 EP98117878A EP0911291B1 EP 0911291 B1 EP0911291 B1 EP 0911291B1 EP 19980117878 EP19980117878 EP 19980117878 EP 98117878 A EP98117878 A EP 98117878A EP 0911291 B1 EP0911291 B1 EP 0911291B1
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EP
European Patent Office
Prior art keywords
signatures
signature
folding
longitudinal fold
folding blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19980117878
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German (de)
French (fr)
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EP0911291A2 (en
EP0911291A3 (en
Inventor
John Sheridan Richards
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Goss International Americas LLC
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Goss International Americas LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US956912 priority Critical
Priority to US08/956,912 priority patent/US6551228B1/en
Application filed by Goss International Americas LLC filed Critical Goss International Americas LLC
Publication of EP0911291A2 publication Critical patent/EP0911291A2/en
Publication of EP0911291A3 publication Critical patent/EP0911291A3/en
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Publication of EP0911291B1 publication Critical patent/EP0911291B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00Folding thin material
    • B65H45/12Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/18Oscillating or reciprocating blade folders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68Reducing the speed of articles as they advance
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H39/00Associating, collating or gathering articles or webs
    • B65H39/10Associating articles from a single source, to form, e.g. a writing-pad
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00Folding thin material
    • B65H45/12Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement

Description

  • The present invention relates to a device for producing a Längsfalzes according to the preamble of claim 1 and a use according to claim 7.
  • Such a device is for example from the US-A-4, 531, 722 known. The US-A-4, 720, 091 describes another folding device.
  • In the printing industry, the speed at which print copies can be produced is constantly being increased. The printing, shaping, folding and cutting operations are often performed by a continuous machine, feeding a blank paper web from a roll and laying out a printed, cut and folded product, often referred to as a signature. For example, a web in the process moves to a finished product through a series of processing units, such as the like. a. through the printing units, the dryer, the cooling unit, the folder and the stacker. One of these processing units in the folder is a device for producing a second longitudinal fold.
  • The generation of a second longitudinal fold in the web running direction z. B. after the signature or the sheet has been cut from the web. So the signature can already have been folded before it receives the second longitudinal fold. Usually, the second longitudinal fold is carried out by z. B. the signatures are successively supplied to a folding mechanism, which moves down to the respective signature and this drives through a slot and between recording ready rollers, which fold the signature. Normally, the signatures to be provided with a second longitudinal fold are presented in a 50% duty cycle, ie a signature of a specific length follows a distance of approximately the same length until the next signature appears. Thus, the folding mechanism moves down to signatures presented in half the time of the work cycle.
  • Mechanisms for creating a second longitudinal fold are known in the art. For example disclosed US 4,509,939 As referred to herein, mechanisms for creating a second longitudinal fold are known in the art. For example disclosed US 4,509,939 to which reference is hereby made, a device for producing a second longitudinal fold with a longitudinal folding knife, which is arranged parallel to the transport direction of a signature and has the purpose of introducing the signature between two rotating cylinders, parallel to the transport direction, so as to longitudinal fold to generate in the signature. The second longitudinal fold generating device is suspended from two drive cranks which are rotated in parallel in the same direction and at the same speed by means of two additional rotating cranks, each connected by a pivot to one end of the drive cranks. The drive cranks, which carry the folding blade which generates the second longitudinal fold, move it vertically between a lower and an upper position. The signatures are sequentially and periodically fed to the folding mechanism for the second longitudinal fold in accordance with the timing of the movement of the knife from top to bottom.
  • However, the process of creating a second longitudinal fold is speed dependent on the rates at which the mechanisms and signatures can be handled at a 50% duty cycle as mentioned above. To achieve higher speeds, two separate folding devices for the second longitudinal fold can be provided in a folder and z. B. be arranged so that each folding device folds every second signature. However, this concept requires additional costs and more space, so that it is not feasible in many smaller printing machines and limits their speed potential.
  • It is an object of the present invention to provide a folding device for the second longitudinal fold and a method wherein signatures selected from a signature stream are delayed in order to form signature groups such. To form signature pairs, which are then folded by a folding blade of appropriate size, and wherein the speed at which the signatures are conveyed, and the folding speed due to the formation of the signature groups can be varied.
  • Thus, according to the method and apparatus of the present invention, a higher signature throughput is achieved since only one fold cycle for multiple signatures is performed with a single means for creating a second longitudinal fold. The signatures are grouped into pairs, for example, then with a single folding blade of suitable length, z. As an extended folding blade, a second longitudinal fold in the group of signatures generated. The folding device according to the invention can thus record signature pairs and thus a larger number of signatures in a 50% duty cycle, the signature throughput is increased. The device according to the present invention is usable in folders or Planoauslegern in which by a folding mechanism, a transverse fold is to be generated in a sheet or a signature.
  • The process of producing the second longitudinal fold according to the present invention comprises e.g. Example, the delay of alternately moving signatures on their way to the device for the second longitudinal fold, so that every second signature is moved back and a smaller gap behind it and a larger gap in front of it arises. This larger gap allows a folding mechanism z. B. can maintain a 50% duty cycle while increasing the number of signatures provided with a second longitudinal fold in a given period of time, or while reducing the folding speed for the same number of signatures to be folded in a given period of time or a combination of both. The signatures, which are processed simultaneously, are z. B. brought together by a delay process into pairs. However, a suitable signature delay mechanism may group the signatures as desired to prepare them for the process of being provided with the second longitudinal fold.
  • Thus, one embodiment of the present invention provides a folding blade for creating a second longitudinal fold approximately twice the length of a single signature. By controlling the speed at which the signature stream is fed to the folding blade and by delaying certain signatures becomes a grouping of signatures, e.g. As a pair formed, and both signatures are provided simultaneously by a single folding blade with the second longitudinal fold, without increasing the folding speed of the folding blade.
  • The means for producing a second longitudinal fold may also comprise a system for compensating for the dynamic forces created by the movement of the folding blade as described in US Pat US Pat. 5,458,557 is described.
  • The present invention will become more apparent from the following description of non-limiting embodiments, taken in conjunction with the accompanying drawings, below.
  • Show it:
  • Fig. 1
    a plan view of a folding unit of a printing press with means for generating a second longitudinal fold according to the present invention;
    Fig. 2
    a partial side view along a vertical line of the longitudinal folding device according to an embodiment of the present invention;
    Fig. 3
    a top view of the Fig. 2 shown folding device;
    Fig. 4
    a schematic view of a stream of signatures which are prepared to obtain a second longitudinal fold according to the present invention;
    Fig. 5
    a signature stream adapted to a 67% duty cycle;
    Fig. 6
    a side view of an example of a retarding tape system according to the present invention;
    Fig. 7
    a side view of a retarding cylinder system
    Fig. 8
    a side view of a retarding tape system for alternate signature storage; and
    Fig. 9
    a side view of a portion of the retarding tape system of Figure 8 , in which an alternating grouping of the signatures is shown.
  • Fig. 1 shows a hopper section of a printing machine with a web 40 or an arrangement of several superimposed strands 40, which is passed over the hopper plate 200 of a folder. The funnel plate 200 is generally triangular and has a width corresponding to the width of the web strands passing over the funnel plate 200. At its downstream side, the triangular funnel plate 200 narrows to a tip 201. The funnel plate 200 creates a longitudinal fold in the strands or track 40 approximately along the centerline thereof as they move over the tip 201 of the funnel plate 200. The strands or web 40 then move between folding rollers 202 below the funnel plate 200 and on to cutting cylinders 210 where the continuous strands or web 40 are cut into individual signatures 400.
  • The coming of the cutting cylinders 210 signatures 400 may, for. B. braked by a paddle wheel 220 and then placed on a conveyor 300 for further processing. Often, the further processing of the signatures 400 involves the process of providing them with a second longitudinal fold. For this purpose, the signatures 400 are successively conveyed by the conveyor 300 into a folding device 240 for the second longitudinal fold. In Fig. 1 For example, this folder 240 is shown with a folding blade 10 and a folding mechanism, including cylinders 150 for receiving each signature 400 driven by the folding blade 10 between both cylinders 150. According to an embodiment of the present invention, a deceleration mechanism 250 may be provided between the paddle wheel 220 and the Folding means 240 may be arranged for the second Längsfalz to handle the signatures 400 before the folding device 240, as described below.
  • Fig. 2 and 3 show an embodiment of a folding device 240 which generates a second longitudinal fold in a signature 400 or in a pairwise grouping of the signatures 400 in the direction of movement of the signatures 400 on a horizontal plane (as indicated by the arrow 21 in FIG Fig. 3 indicated) with the signatures moving in a front end-to-back arrangement in which the open front end of the signature follows the back end of the signature. Folding means for producing the second longitudinal fold are known in the art, and according to the present invention, other conventional folding means for the second longitudinal fold, such. B. the in US 4,509,939 described device can be used.
  • The folding device 240 includes z. B. a vertically mounted frame 100 with two horizontal bearings, which are both on the same plane and ball bearings 102, 102 'have, in which two central axes of rotation 20 a, 30 a are mounted perpendicular to the frame 100 and parallel to each other. The folding blade 10 is connected by hinge arms 25 and 35 with rotary bodies 20 and 30, which rotate about the axes of rotation 20a and 30a, respectively. The rotation of the rotating bodies 20 and 30 causes the folding blade 10 used for the folding operation to reciprocate on a vertical path 22. When the blade 10 is in a raised position, the signatures 400 move below the folding blade 10 in position. Then, the folding blade 10 moves down on the signatures and generates in these between the cylinders 150 a longitudinal fold.
  • As in Fig. 3 shown, the folding blade 10 extends to produce a second longitudinal fold horizontally and is positioned parallel to the transport direction 21 of the signature 400, above the signature 400, the z. B. is placed on a folding table 260 having a folding slot which is parallel to the transport direction 21 of the signature and the folding blade 10 opposite. The folding blade is at pivot points 11 and 12, which are located on opposite sides of the Folding blade 10 are rotatably connected to the articulated arms 25 and 35. The rotational movement of the rotary bodies 20 and 30 is transformed into a vertical reciprocating movement 22 of the folding blade 10.
  • The folding device according to the present invention comprises a folding blade 10 of suitable length to signature groupings such. B. to provide two signatures, which are in a front end-to-back end arrangement, with a second longitudinal fold. Thus, for example, two signatures 400 can enter the folding device 240 and be provided by means of the folding blade 10 at the same time with a second longitudinal fold. The groupings can be done alternately and the length of the folding blade 10 can be adjusted respectively.
  • According to the present invention, signatures 400 are folded in groups in a folder for the second longitudinal fold, e.g. B. in pairs and not individually, as is known in the art. The signatures 400 are usually z. B. supplied by cutting cylinders in evenly spaced arrangement. As described in more detail below, the feed rate of the signatures 400 conveyed by the upstream processing units to the folder according to the invention is changed to simultaneously feed a plurality of signatures to the folding blade 10, wherein the folding blade 10 maintains or reduces its folding speed.
  • Fig. 4 FIG. 12 illustrates a schematic example of a signature display according to an embodiment of the present invention showing fifteen time-related snapshots showing the positions of the signatures 400 as they are conveyed to the folder of the present invention over time. How out Fig. 4 As can be seen, the signatures 400 initially move in a 50% duty cycle. For example, the signature 2 at the time interval T3 has assumed the position that the signature 1 had taken at the time interval T1. The time interval T2 required for signatures 1 and 2 to travel gives the 50% duty cycle. As illustrated, each signature 400 is followed by approximately the same space or space.
  • At time interval T5, three signatures 400 (numbered 1, 2 and 3) are still at their original distance from each other. However, between time interval T5 and T6, the signature 1 is delayed according to the present invention, so that z. B. signature 2 forms a signature pair. All signatures then move on until time interval T9. Between the time intervals T9 and T10, however, signature 3 is delayed and a further pair with signature 4 is formed. Although in Fig. 4 only pairs of signatures are formed, it is also possible to form groupings with multiple signatures, e.g. B. groupings of three, with a second delay is used to z. As signature group 1, 2 and 3 and group 4, 5 and 6, etc. to form.
  • At the time interval T10, the signature pairs 1-2 and 3-4 are formed and are at a distance from each other such that a "pair" of voids lies between two signature pairs. At the time interval T11, the folding device 240 starts to produce a second longitudinal fold in the pair 1-2, while the pair 3-4 and the individual signatures 5 and 6 continue to move on the folding blade 10. At the time interval T12, the folding of the signature pair 1-2 is performed approximately halfway. At time interval T13, the folding blade 10 is raised so far that the signature pair 3-4 can approach and thus the signature current can continue, as shown at the time intervals T14 and T15, etc. Thus, if a delay is caused for selected signatures, such as alternately delaying the signatures 400 to form signature pairs, e.g. Signature pairs 1-2, 3-4, etc., then the space between each pair of signatures 400 is absent or minimal. There are z. B. substantially no white space between the signature pairs 1-2, 3-4, 5-6, etc. The signature pairs are each submitted to the folding device according to the invention to together, d. H. as pairs to obtain a second longitudinal fold.
  • By delaying selected signatures 400 to create signature groupings, e.g. B. pairs to form, there are several advantages. For example, if the feeding speed of the signatures 400 to the folding device 240 is kept constant and selected signatures 400 are retarded to form pairs, the folding speed of the folding blade 10 of the present invention can be reduced by 50% while maintaining the same throughput performance as a conventional single signature folding blade. This is because signature pairs arrive at the folding blade 10 in half the frequency at which individual signatures 400 (before delay) are presented to the folding blade 10 for individual folding. Alternatively, the folding speed of the folding blade 10 may be maintained or partially reduced, if accompanied by a corresponding increase in the feeding speed of the signatures 400.
  • If z. B. the folding speed of the folding blade 10 is maintained and signature pairs are formed with a delay mechanism according to the present invention, the feed rate of the signatures 400 and thus the throughput of the folding device 240 can be doubled. In such a case, the folder 240 remains at a 50% duty cycle (ie, equal lengths of signature pairs follow the lengths of the signature pairs). In accordance with the present invention, by delaying selected signatures 400 grouping and with a single folding motion In fact, any combination of feed speed increase for signatures 400 and corresponding reduction in the folding speed of the folding blade 10 can be achieved. For example, increasing the feed rate from 100% to 150% would cause the folding speed to be reduced from 100% to 75% when the folding blade 10 is operated in a 50% duty cycle. It is also possible to feed in a cycle other than a 50% duty cycle by changing the speeds of all signatures.
  • For example, if a signature stream having a pair of signatures followed by a single signature length space has a 67% duty cycle, the folding blade 10 folds two signatures 400 in one-third of the duty cycle and is then delayed by two-thirds of the duty cycle, while FIG two other signatures 400 (ie a signature pair) move into position under the folding blade 10.
  • Fig. 5 shows a signature stream, the z. B. to be adapted to a 67% duty cycle. A paddle wheel or deceleration drum 220 conveys signatures 400 z. B. on a conveyor belt 300 with a spacing between the signatures 400 of half a signature length. Delaying each second signature 400 by half a signature length results in signature pairs having a distance from each other corresponding to a single signature. This determines a 67% duty cycle, where in two-thirds of the cycle signatures are to be processed and one-third of the cycle is white space.
  • In this case, a folding blade 10 can be constructed, the z. For example, the folding process is accomplished by cycloidal motion well known in the art in less than 50% of the available cycle of operation. Thus, in the two-thirds of the cycle in which the knife lingers over the signature, the conveyor belt 300 can transport a pair of signatures into position below the folding blade 10 while the folding takes place in the remaining third of the cycle and a subsequent pair of signatures Folding blade 10 approaches.
  • As indicated above, processing a stream of signatures 400 in the folding device to create a second longitudinal fold in accordance with the present invention involves delaying selected signatures 400, e.g. B. a delay mechanism 250 (see Fig. 1 ) disposed upstream of the folding device 240. The delay of a signature 400 takes place on the belt, ie while the signature is being moved from the belt to the folding blade 10 of the folding device 240. The signatures 400 may be alternately delayed by e.g. B. stopped on their transport to the folding device on the tape and restarted. In the same way, the delay of more than two signatures 400 can be achieved.
  • Fig. 6 shows an example of an on-band delay mechanism. Below a paddle wheel 220 or a delay device, not shown, conveyor belts 300 and 301 are arranged, which receive the 400 coming from the paddle wheel or the delay device signatures. The conveyor belts 300 and 301 convey the signatures 400 to the folding blade 10 of a folding device for the second longitudinal fold, which is arranged downstream of the conveyor belts. A front stop 302 is located on the conveyor belts 300 and 301 at a suitable location between the upstream device, e.g. As the paddle wheel or the deceleration drum 220 (see Fig. 1 ) and the downstream device, for. For example, the front stop 302 may be a pivotally mounted member that reciprocates between a raised position 302.1 and a lowered position 302.2. In the raised position 302.1, the front stop 302 brakes the movement of the signature 400 to delay it until it is substantially adjacent to the following signature 401. The front stop 302 may then pivot to the lowered position 302.2 so as not to slow the movement of the signature 400 any longer so that the signatures 400, 401 may continue to move as a signature pair. By swinging back and forth of the front stop 302 in the corresponding time cycle, the pairs of signatures 400, which are fed to the folding blade 10 according to the present invention form.
  • It can except the in Fig. 6 also shown other types of on-tape delay mechanisms are used. For example, trailing edge grippers or other devices known in the art may be used to decelerate or control signatures 400 so that different gap systems between signatures 400 may be achieved, such as, for example, US Pat. Example, a front-to-back arrangement, a grouping of three signatures, or the "mother-father" configuration, in which two superimposed signatures are folded, so that a signature 400 is folded into the other. It is also possible to use gripping mechanisms which comprise the trailing edge of a signature 400 or a position between the front edge and the trailing edge of the signature 400 take, for example, on a conveyor to delay, so that form signature groups, which are then fed to the folding blade.
  • Fig. 7 shows a delay mechanism, referred to as cylinder deceleration. As in Fig. 9 1, a first cylinder 501 has a plurality of grippers 503 (eg 503.1-503.6) which are arranged at a distance from each other around the circumference of the cylinder. The cylinder 501 is arranged next to a conveyor belt 300, for example. The grippers 503 access the signatures 400 from the conveyor belt 300 by means of a conventional gripping mechanism. A second cylinder 502, for example, having a different diameter than the first cylinder 501, also has a plurality of grippers 504 (eg, 504.1-504.2) spaced about its unifang. The second cylinder 502 is disposed substantially parallel to the first cylinder 501 with a center-to-center distance which allows the grippers 503 of the first cylinder 501 and the grippers 504 of the second cylinder 502 to cooperate. The two cylinders 501, 502 may be equipped with grippers 503, 504 known in the art which are adapted to transfer the signatures 400 from one cylinder to the other or from a cylinder to a conveyor belt.
  • During operation of the folding device, a signature 400, which is taken over by the first cylinder 501 of upstream processing units in a conventional manner, for example, transferred from the gripper 503.1 to the gripper 504.1 of the second cylinder 502. The perimeters of the cylinders 501, 502 are of appropriate dimension, so that z. B. on successive revolutions, the gripper 503 of the first cylinder 501 with another gripper 504 of the second cylinder 502 cooperate, as is the case with the known gripper-to-gripper transfer method. Thus, the gripper 504.1 of the second cylinder 502 passes the signature to the gripper 503.2 of the first cylinder 501. Then, the first cylinder 501 can deposit two signatures on the conveyor 300 in a front end-back end arrangement, ie substantially without clearance between the open Front end of a signature 400 and the back end of a previous signature 400. The Signatures 400 thus enter the folding device 240 in order to be provided jointly according to the present invention with the second longitudinal fold.
  • The first cylinder 501 or the second cylinder 502 may, for. B. also have a low Umdrehungssexzentrizität, so that in the transmission of the signature from one cylinder to the other, the gripper on the cylinder to which the signature is transmitted moves faster than the gripper on the cylinder, from which the signature is removed , For example, when transferring the signature from gripper 503.4 to gripper 504.2, gripper 504.2 moves slightly faster than gripper 503.4.
  • Fig. 8 shows a delaying tape system in which z. B. every second signature 400 can be released from a signature product stream and transported to another tape system with different path lengths to the folding device. The embodiment of Fig. 8 shows a conventional folding cylinder 601, which is arranged substantially perpendicular to the signature path and receives signatures of upstream processing units of the printing press. The cylinder 601 has a plurality of grippers 602.1, 602.2 distributed around its circumference. Adjacent to the cylinder 601 are two belt paths 610 and 620. The belt path 610 is formed by a belt 611 rotating about rollers 612 and by a belt 613 rotating about rollers 614. A second belt path 620 is formed by a belt 621 rotating about rollers 622 and by a belt 623 rotating about rollers 624. The tape paths 610 and 620 ultimately merge. In Fig. 8 form the band paths 610 and 620 z. B. a third tape path 630, which leads to a folding blade 10, which generates a second longitudinal fold. Alternatively, via the tape paths 610 and 620, signatures 400 may be deposited on an independent conveyor, not shown, located immediately downstream of the tape paths 610 and 620 and which then conveys the signatures to the folding blade 10.
  • When operating the in Fig. 8 shown therein the signatures 400 are supplied in a front end-to-back end arrangement and z. B. directed alternately in different band paths. The gripper 602.1 gives a first Signature 401 in the first band path 610 free. Thereafter, the gripper 602.2 releases a second signature 402 into the second tape path 620. The lengths of the paths and the speed of the bands are matched so that the signatures 401 and 402 can be conveyed in a front-to-back end arrangement into a single pair in the common pathway 630. The signature pair 401, 402 is then transported to the folding blade 10 which reciprocates on a vertical path 22 to create the second longitudinal fold.
  • Fig. 9 shows an alternate display of the signatures 400 over different band paths. Here, the signatures 400 and 401 are deposited on the common tape path 630, one on top of the other and not in the front end-to-back arrangement. This is advantageous because, when folding two signatures, the signatures are interlaced, which is also known as a "mom-and-dad" arrangement. This "mom-and-dad" arrangement can also be achieved with other delay mechanisms described above.
  • The throughput of a printing press can be further improved by z. For example, a signature stream is split either before or after the formation of the above-described groupings of signatures 400, and each of the divided signature streams is processed in a separate folding device 240 according to the invention for producing a second longitudinal fold. Thus, the folding speed z. Example, be quadrupled when the signature stream is divided and from each stream a pairwise signature grouping a separate folding blade 10 is fed, each of the two folding blade 10 with the folding speed, as prevailed before the delay is operated.
  • LIST OF REFERENCE SIGNS
  • 1 - 6
    Signatures of a grouping
    10
    folding blade
    11
    pivot point
    12
    pivot point
    20
    rotating body
    20a
    axis of rotation
    21
    transport direction
    22
    Vertical movement / path of the folding blade 10
    25
    articulated arm
    30
    rotating body
    30a
    axis of rotation
    35
    articulated arm
    40
    Train / train
    100
    frame
    102
    ball-bearing
    102 '
    ball-bearing
    150
    folding cylinder
    200
    former board
    201
    Top of the funnel plate
    202
    folding roller
    210
    cutting cylinder
    220
    Paddlewheel / deceleration drum
    240
    Folding device for generating the second longitudinal fold
    250
    delay mechanism
    260
    folding table
    300
    conveyor belt
    301
    conveyor belt
    302
    frontgauge
    302.1
    raised position of the front stop 302
    302.2
    lowered position of the front stop 302
    400
    signature
    401 - 402
    the following signatures / signature pair
    501
    first cylinder ( Fig. 7 )
    502
    second cylinder ( Fig. 7 )
    503.1 - 503.6
    Gripper ( Fig. 7 )
    504
    Gripper ( Fig. 7 )
    504.1 - 504.2
    Gripper ( Fig. 7 )
    601
    folding cylinder
    602.1 - 602.2
    grab
    610
    tape path
    611
    tape
    612
    roll
    613
    tape
    614
    roll
    620
    tape path
    621
    tape
    622
    roll
    623
    tape
    624
    roll
    630
    tape path

Claims (7)

  1. Device for forming a longitudinal fold in signatures being conveyed by a conveyor system, wherein the device comprises the following features:
    a delay mechanism (250) for selectively processing individual signatures (400) in order to form at least one signature grouping;
    a folding blade (10), arranged downstream of the delay mechanism (250) and parallel to the feeding direction (21) of the at least one signature grouping; and a folding mechanism (240) located below the folding blade (10), the folding mechanism receiving the signatures (400) of the at least one signature grouping and forming a longitudinal fold in the signatures (400) of the at least one signature grouping, wherein the folding blade (10) is moved between a first and a second position, the folding blade in the second position drives the signatures (400) of the at least one signature grouping into the folding mechanism (240),
    characterized in that
    the conveyor system comprises a conveyor (300), and
    the delay mechanism (250) has an on-belt delay mechanism, which is designed to impede the motion of a signature while the signature is moved from the conveyor (300) towards the folding blade (10) of the folding device.
  2. Device according to Claim 1,
    characterized in that
    the at least one signature grouping, acted upon by the folding blade (10), includes a head-to-tail pairing of adjacent signatures.
  3. Device according to Claim 1,
    characterized in that
    the delay mechanism (250) comprises a headstop (302) fitted on the conveyor system, the headstop being movable between a first and a second position (302.1, 302.2), so that in the first position (302.1) of the headstop (302) the forward motion of at least one of the signatures (400) is impeded and in the second position (302.2) of the headstop (302) the forward motion of at least one of the signatures (400) is not impeded.
  4. Device according to Claim 1,
    characterized in that
    the delay mechanism (250) comprises a tail gripper.
  5. Device according to Claim 1,
    characterized in that
    the folding mechanism (240) comprises a first cylinder (150), which is arranged opposite a second cylinder (150), so that the first and the second cylinder (150) form a gap, into which the at least one signature grouping is driven in order to be folded.
  6. Device according to Claim 1,
    characterized in that
    the folding blade (10) exhibits a length adapted to the length of the at least one signature grouping.
  7. Use of a device according to any one of the preceding claims for the formation of a second longitudinal fold in signatures, which formation comprises the following steps:
    delivering a stream of signatures from an upstream processing unit of a printing press;
    delaying signatures selected from the signature stream in order to form at least one signature grouping;
    conveying the at least one signature grouping into the device for the formation of a second longitudinal fold; and
    forming a second longitudinal fold in the at least one signature grouping.
EP19980117878 1997-10-23 1998-09-21 Folding device in a high speed folding apparatus Expired - Lifetime EP0911291B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US956912 1997-10-23
US08/956,912 US6551228B1 (en) 1997-10-23 1997-10-23 High speed quarterfolder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09176788A EP2159178A1 (en) 1997-10-23 1998-09-21 Folding device in a high speed folding apparatus

Publications (3)

Publication Number Publication Date
EP0911291A2 EP0911291A2 (en) 1999-04-28
EP0911291A3 EP0911291A3 (en) 1999-12-01
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EP19980117878 Expired - Lifetime EP0911291B1 (en) 1997-10-23 1998-09-21 Folding device in a high speed folding apparatus
EP09176788A Withdrawn EP2159178A1 (en) 1997-10-23 1998-09-21 Folding device in a high speed folding apparatus

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Also Published As

Publication number Publication date
DE59814413D1 (en) 2010-01-07
JPH11193177A (en) 1999-07-21
EP0911291A3 (en) 1999-12-01
EP0911291A2 (en) 1999-04-28
EP2159178A1 (en) 2010-03-03
US6551228B1 (en) 2003-04-22

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