EP2159178A1 - Dispositif de pliage dans une machine plieuse à grande vitesse - Google Patents

Dispositif de pliage dans une machine plieuse à grande vitesse Download PDF

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Publication number
EP2159178A1
EP2159178A1 EP09176788A EP09176788A EP2159178A1 EP 2159178 A1 EP2159178 A1 EP 2159178A1 EP 09176788 A EP09176788 A EP 09176788A EP 09176788 A EP09176788 A EP 09176788A EP 2159178 A1 EP2159178 A1 EP 2159178A1
Authority
EP
European Patent Office
Prior art keywords
signature
signatures
folding
cylinder
grouping
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.)
Withdrawn
Application number
EP09176788A
Other languages
German (de)
English (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
Original Assignee
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
Application filed by Goss International Americas LLC filed Critical Goss International Americas LLC
Publication of EP2159178A1 publication Critical patent/EP2159178A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/18—Oscillating or reciprocating blade folders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/68—Reducing the speed of articles as they advance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H39/00—Associating, collating, or gathering articles or webs
    • B65H39/10—Associating articles from a single source, to form, e.g. a writing-pad
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement

Definitions

  • the present invention relates to printing machines, and more particularly to means for folding signatures in the folder of a printing press.
  • 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.
  • 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 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.
  • 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.
  • 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.
  • 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.
  • 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 54% 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.
  • 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.
  • one embodiment of the present invention provides a folding blade for creating a second longitudinal fold approximately twice the length of a single signature.
  • a folding blade for creating a second longitudinal fold approximately twice the length of a single signature.
  • 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.
  • 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.
  • the further processing of the signatures 400 involves the process of providing them with a second longitudinal fold.
  • the signatures 400 are successively conveyed by the conveyor 300 into a folding device 240 for the second longitudinal fold.
  • 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.
  • a deceleration mechanism 250 may be provided between the paddle wheel 220 and the Folding means 240 may be arranged for the second Lijnsfalz 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 it can 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.
  • the signatures 400 move below the folding blade 10 in position.
  • the folding blade 10 moves down on the signatures and generates in these between the cylinders 150 a longitudinal fold.
  • 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.
  • 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.
  • 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.
  • the feed rate of the signatures 400 conveyed by the upstream processing units to the present folding device is changed to simultaneously feed a plurality of signatures to the folding blade 10, with the folding blade 10 maintaining or reducing its folding speed.
  • 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.
  • the signatures 400 initially move in a 50% duty cycle.
  • 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.
  • each signature 400 is followed by approximately the same space or space.
  • 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.
  • 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.
  • the folding of the signature pair 1-2 is performed approximately halfway.
  • 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.
  • 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.
  • 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.
  • 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.
  • the feed rate of the signatures 400 and thus the throughput of the folding device 240 can be doubled.
  • the folder 240 remains at a 50% duty cycle (i.e., the lengths of the signature pairs follow equal lengths of spaces between the signature pairs).
  • any combination of feed rate 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.
  • 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.
  • a folding blade 10 can be constructed, the z.
  • the folding process is accomplished by cycloidal motion well known in the art in less than 50% of the available cycle of operation.
  • 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.
  • 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. Any suitable delay mechanism may also be used.
  • the delay of a signature 400 on the tape can take place, ie while the signature is being moved from the tape 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 a band delay mechanism.
  • 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.
  • the front stop 302 may be a pivotally mounted member that reciprocates between a raised position 302.1 and a lowered position 302.2.
  • 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.
  • 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.
  • 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 further delay mechanism according to an embodiment of the present invention, which is referred to as cylinder deceleration.
  • 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 (e.g., 504.1-504.2) spaced about its circumference.
  • 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.
  • 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.
  • the gripper 504.1 of the second cylinder 502 passes the signature to the gripper 503.2 of the first cylinder 501.
  • 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 Umwindungssexzentriztician, 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 delay band system according to the present invention, 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP09176788A 1997-10-23 1998-09-21 Dispositif de pliage dans une machine plieuse à grande vitesse Withdrawn EP2159178A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/956,912 US6551228B1 (en) 1997-10-23 1997-10-23 High speed quarterfolder
EP98117878A EP0911291B1 (fr) 1997-10-23 1998-09-21 Dispositif de pliage dans une machine plieuse à grande vitesse

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP98117878.3 Division 1998-09-21

Publications (1)

Publication Number Publication Date
EP2159178A1 true EP2159178A1 (fr) 2010-03-03

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP09176788A Withdrawn EP2159178A1 (fr) 1997-10-23 1998-09-21 Dispositif de pliage dans une machine plieuse à grande vitesse
EP98117878A Expired - Lifetime EP0911291B1 (fr) 1997-10-23 1998-09-21 Dispositif de pliage dans une machine plieuse à grande vitesse

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP98117878A Expired - Lifetime EP0911291B1 (fr) 1997-10-23 1998-09-21 Dispositif de pliage dans une machine plieuse à grande vitesse

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US (1) US6551228B1 (fr)
EP (2) EP2159178A1 (fr)
JP (1) JPH11193177A (fr)
DE (1) DE59814413D1 (fr)

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US4509939A (en) 1980-12-06 1985-04-09 Heidelberger Druckmaschinen Ag Folding device for web-fed rotary printing presses
US4531722A (en) * 1983-07-15 1985-07-30 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Folding apparatus receiving printed products from a rotary printing machine and method of redeposition
US4720091A (en) * 1985-08-02 1988-01-19 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Printed copy folding and assembly apparatus
EP0533150A1 (fr) * 1991-09-20 1993-03-24 METEOR-SIEGEN Apparatebau Paul Schmeck GmbH Dispositif de pliage pour feuilles et articles plats
US5458557A (en) 1992-10-26 1995-10-17 Heidelberger Druckmaschinen Ag Quarter fold folding device having a balancing system

Also Published As

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EP0911291B1 (fr) 2009-11-25
EP0911291A3 (fr) 1999-12-01
DE59814413D1 (de) 2010-01-07
US6551228B1 (en) 2003-04-22
JPH11193177A (ja) 1999-07-21
EP0911291A2 (fr) 1999-04-28

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