EP2933215B1 - Zweitfalzwalze mit varibaler Abstandssteuerung - Google Patents

Zweitfalzwalze mit varibaler Abstandssteuerung Download PDF

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Publication number
EP2933215B1
EP2933215B1 EP14165250.3A EP14165250A EP2933215B1 EP 2933215 B1 EP2933215 B1 EP 2933215B1 EP 14165250 A EP14165250 A EP 14165250A EP 2933215 B1 EP2933215 B1 EP 2933215B1
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EP
European Patent Office
Prior art keywords
size
gap
nip
assembly
book
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.)
Not-in-force
Application number
EP14165250.3A
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English (en)
French (fr)
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EP2933215A1 (de
Inventor
Charles A. Tomczak
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Goss International Americas LLC
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Goss International Americas LLC
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Priority to EP14165250.3A priority Critical patent/EP2933215B1/de
Publication of EP2933215A1 publication Critical patent/EP2933215A1/de
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Publication of EP2933215B1 publication Critical patent/EP2933215B1/de
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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
    • B65H45/16—Rotary folders
    • B65H45/161—Flying tuck 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
    • 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
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • B65H2511/224—Nip between rollers, between belts or between rollers and belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/20—Avoiding or preventing undesirable effects
    • B65H2601/25—Damages to handled material
    • B65H2601/251—Smearing

Definitions

  • This application relates to a device for adjusting the gap between rollers of a second fold roller in a folder of a printing press.
  • a web of material is typically cut to form signatures, and the signatures are typically folded at least once to produce the desired configuration for the end product which may, for example, be a newspaper, periodical, or catalog.
  • One of the known mechanisms for creating the fold is referred to as a rotary folder or couple, wherein a pair of second fold rollers are positioned proximate a folding cylinder with a gap or nip being provided between the second fold rollers.
  • the web of material is wrapped around the folding cylinder and a folding blade is adapted to extend from the folding cylinder in a position corresponding to the nip.
  • the folding blade is typically mounted to a spider assembly used to appropriately time the extension of the folding blade.
  • a folding blade extends from the folding cylinder, the folding blade extends into the nip, pushing the signature cut from the web into the nip.
  • the second fold rollers which rotate away from the folding cylinder, complete the fold in the signature initiated by the folding blade, and process the folded signature on to a delivery system including such things as delivery flies and conveyor belts.
  • U.S. Patent No. 6,279,890 describes a printing press having a jaw mode assembly and a rotary mode assembly with a single folding cylinder adapted to feed either the jaw mode assembly or the rotary mode assembly is disclosed.
  • a moving web of material is initially trained about the folding cylinder and cut into a signatures which are then temporarily held on the folding cylinder.
  • a folding blade extends from the folding cylinder to initiate a fold in each signature and direct each signature to either the jaw mode assembly or the rotary mode assembly.
  • the timing of the folding blade is coordinated and adjusted using an indexable spider assembly to feed either the jaw mode assembly or the rotary mode assembly.
  • the second fold is imparted with a pair of second fold rollers located below the folding cylinder.
  • U.S. Patent No. 5,937,757 describes a device for adjusting the gap size between folding rollers of a rotary press folding machine in order to permit automated setting of operating parameters while also facilitating the removal of paper jams.
  • the device for adjusting the gap size between folding rollers of a rotary press folding machine includes a pair of counter-rotating folding rollers which define a folding nip or gap therebetween. Each folding roller is mounted to one end of a pivoting support arm, and a link arm is slidably and pivotably mounted to the other end.
  • An extensible member connects the link arms to each other, which enables the distance between the rollers to be quickly and easily adjusted.
  • An inflatable bag is disposed between the support arms which forces the rollers towards each other to resist spreading of the rollers when a paper passes through the gap between the rollers.
  • the bag can be quickly deflated from a remote location to allow removal of jammed papers, and can be quickly re-inflated to the desired setting to minimize down time.
  • a control system controlling both the extensible member and the inflatable bag permits rapid adjustment of the folding machine to accommodate changes in paper thickness.
  • U.S. Patent No. 5,964,154 purports to describe a device for accurately setting a roller gap of a folding device of a rotary web-fed press uses a rotatable threaded spindle with contrarotating threads at both of its ends.
  • a drivable differential screw gear mechanism is associated with each threaded spindle end and operates to pivot two-armed levers that support the folding rollers to thus vary the roller gap.
  • U.S. Patent No. 5,147,276 purports to describe a longitudinal folding device for folding symmetrical and asymmetrical paper products has a folding blade and cooperating folding rollers whose positions with respect to each other can be varied.
  • the folding blade or the folding roller pair can be shifted laterally with respect to a longitudinal fold line.
  • the spacing between the folding rollers can be adjusted in accordance with paper thickness and number of sheets in the product to be folded.
  • U.S. Patent No. 3,954,258 describes a second fold roller mounting and adjustment assembly.
  • the second fold roller assembly of the folder includes adjustable stop members associated with the fold roller support levers for regulating and maintaining a predetermined space between the rollers in their operative position.
  • Spring members are provided to bias the support levers against the stop members and these spring members are mounted on the stop members so that when space adjustments of the rollers are effected, the stop members, the support levers and the spring members move in unison as an integral unit and the preset tension of the spring members remains constant throughout all positions of adjustment.
  • a second fold roller assembly in accordance with a first embodiment of the present invention, includes a pair of second fold rollers, each supported on a support element, the pair of second fold rollers forming a nip therebetween for transporting a book, the pair of second fold rollers being separated by a gap at the nip.
  • the assembly also includes one or more actuators coupled to the support elements and a controller coupled to the one or more actuators.
  • the controller controls the one or more actuators to vary a size of the gap, wherein the size of the gap is controlled to be a first size when a leading edge of the book enters the nip and the size of the gap is controlled to be a second size after the leading edge of the book has exited the nip and while a portion of the book is in the nip, the second size being greater than the first size.
  • the assembly may further include a sensor for detecting a position of a folding blade, the controller coupled to the sensor, the controller controlling the size of the gap as a function of the position.
  • the assembly may further include a first bias assembly coupled to the support element of a first of the pair of second fold rollers, and a second bias assembly coupled the support element of a second of the pair second fold rollers, wherein the gap is the first size when the first and second bias assemblies are extended.
  • the one or more actuators may include a first actuator coupled to the first bias assembly and a second actuator coupled to the second bias assembly, and the controller may control the first and second actuators to retract the first and second bias assemblies to change the size of the gap to the second size.
  • the first and second bias assemblies may, for example, be pneumatic piston rod cylinders.
  • the first and second bias assemblies each may comprise a connecting rod and a pneumatic cylinder, or alternatively, a connecting rod and a spring.
  • the first and second actuators may, for example, be hydraulic piston rod cylinders.
  • the hydraulic piston rod cylinders each may be connected to a connecting rod of the first and second bias assemblies, or if the bias assemblies are pneumatic piston rod cylinders, to the piston rods.
  • each support element may have a first end and a second end, the first end supporting one of the second fold rollers, and the second end connected to an associated one of the first and second bias assemblies. Further, each support element may be rotatable about a respective pivot located between the first end and the second end.
  • a method of varying a gap between second fold rollers of a folder as a book passes through the gap includes the steps of : providing a pair of second fold rollers, each supported on a support element, the pair of second fold rollers forming a nip therebetween for transporting a book, the pair of second fold rollers being separated by a gap at the nip; rotating the pair of second fold rollers; setting the gap at a first size; inserting a leading edge of a book into the nip between the rotating pair of second fold rollers while the gap is at the first size; and changing the gap to a second size after the leading edge of the book has exited the nip between the rotating pair of second fold rollers and while a portion of the book is in the nip between the rotating pair of second fold rollers, the second size being greater than the first size.
  • the aforementioned second embodiment may also include other optional components and features.
  • the method may further include detecting a position of a folding blade and changing the size of the gap as a function of the position.
  • the method may, for example, include the steps of providing a first bias assembly coupled to the support element of a first of the pair of second fold rollers; providing a second bias assembly coupled to the support element of a second of the pair second fold rollers, wherein the gap is the first size when the first and second bias assemblies are extended; and wherein the step of changing further includes retracting the first and second bias assemblies to change the size of the gap to the second size.
  • a second fold roller assembly is typically employed downstream of a folding cylinder of a rotary folder of a printing press.
  • Each printed product on the folding cylinder upon reaching a predetermined angular position on the folding cylinder, is severed from the ensuing web by a cutting cylinder, and a folding blade of the folding cylinder tucks the product into a nip formed by a pair of second fold rollers.
  • the product is typically a set of folded sheets (or signatures) which is generally referred to as a book, or in the example of newspaper production, a section of the newspaper.
  • the second fold rollers may impart marking onto the outside pages of the book due to residual ink on the second fold rollers.
  • This marking often called “set-off” in the printing industry, is highly undesirable. Set-off can also occur on inside pages of the book where ink from one inside page marks the page it faces.
  • the amount of marking created is a function of the pressure applied by the second fold rollers to the book. Pressure is not the only factor, for example, ink density also affects marking. However, in general, greater pressure results in more marking, and less pressure results in less marking.
  • the nip pressure between the second fold rollers is dynamically controlled as the book passes through the nip.
  • the nip pressure is greatest when the second fold rollers initially contact the book, and the nip pressure is thereafter reduced by increasing the gap between the second fold rollers as the remainder of the book passes through the nip.
  • This process is then repeated for the next book entering the nip.
  • it is the initial contact of the nip with the leading edge of the book that is most critical in ensuring a proper positioning of the book as it passes through the nip in order to effect a correct release of the book to downstream processing by, for example, a delivery fan or conveyor.
  • nip pressure can be implemented by synchronizing the control of nip pressure with the position of the folding blade which inserts the book into the entrance of the second fold roller nip. This synchronization can be implemented electronically or mechanically as explained below.
  • tabloid rollers rollers are undercut in the printed area of the roller so that, in the center, it has only a working surface of about 24,5mm (1 ") in the circumferential direction (called the "crushing strip").
  • each tabloid roller in a pair has a pair of 9,525mm (3/8") wide fully circumferential surfaces forming a pair of side nips between the rollers.
  • the rotation of the tabloid rollers is timed so that as the leading edge of a signature reaches tabloid roller pair, the crushing strips meet to form a nip to grip the signature.
  • tabloid rollers are undesirable for a number of reasons. For example, due to the above-referenced positioning of the crushing strip and side strips, tabloid rollers are web width dependent. This problem is exponentially compounded when considering multi-web presses (i.e. presses that print in a number of widths). Tabloid rollers are also more difficult to manufacture than conventional rollers. Further, with tabloid rollers, the web can wander during production, and the grip on the paper can be haphazard leading to delivery problems.
  • FIG. 1 schematically illustrates a pair of second fold rollers 14,16 and a folding blade 3.
  • Second fold rollers 14, 16 are driven rollers which receive a book 1, newspaper section or set of signatures (hereinafter "book") at a nip 2 formed between rollers 14, 16.
  • the book is inserted into the nip 2 by a folding blade 3 which extends to place the book 1 into the nip and then retracts to allow the book to pass through the nip. This process is then repeated for each book.
  • the rotational movement of the driven rollers 14, 16 and the movement of the folding blade 3 can be implemented in any known manner and thus will not be described herein.
  • a controller 10 which controls a gap or distance "d” between second fold rollers 14, 16. Controller 10 varies the gap or distance "d” as each book 1 passes through the nip to vary the pressure applied to the book. Controller 10 controls the gap "d” between rollers 14, 16 through one or more actuators, such as motor(s), solenoid(s), or pistons. The rollers are supported for movement relative to each other by the actuator(s) through one or more support elements, such as rotatable arm(s), translatable carriage(s), eccentric bearing(s), or other movable element(s). Controller 10 is an electronic controller which may be implemented as software executing on a computer, may be implemented entirely in hardware (as for example, an ASIC, FPGA, or other circuitry not employing software), or may be implemented as a combination of software and hardware.
  • Controller 10 controls the relative position between rollers 14 and 16 to maintain a gap "d" of a first size as the rollers 14, 16 secure a leading edge of the book 1 in a nip 2 formed between rollers 14, 16.
  • the controller controls the rollers 14, 16 to increase the gap "d" to a second size, greater than a first size, as the book passes thought the nip.
  • the controller then controls the roller to maintain a gap of the first size as the next book enters the nip, and the process repeats.
  • the rollers 14, 16 are illustrated as separated by a gap "d" of the first size since the leading edge of the book is just entering the nip.
  • Controller 10 synchronizes the change in gap size to the movement of the folding blade 3.
  • the position of the folding blade 3 can be monitored by the controller in a variety of ways, including, for example, a sensor such as an encoder or resolver on the motor shaft driving the folding blade, an encoder or resolver on a gear in a gear train between the motor and the folding blade, or by directly sensing a position of the folding blade, for example, with an optical sensor and target.
  • the timing of the gap change, as well as the magnitude of the change in gap size can be controlled via the controller 10. For example, it may be desirable to have a larger change in gap size for a 120 page signature than for a four page signature.
  • the gap size is preferably increased after the leading edge of the signature has exited the nip but at or before about 25,4mm (about 1 inch) of the signature has exited the nip, preferably at or before 15,875mm (5/8 inch) of the signature has exited the nip. Most preferably, the gap size is increased when about 12,7mm (1 ⁇ 2 inch) of the signature has exited the nip.
  • FIG. 1 illustrates controller 10 as an electronic controller
  • gap control could be implemented in an entirely mechanical manner as well.
  • synchronization of the change in gap "d" with the position of a folding blade could be implemented with a cam and cam follower coupled to the support element(s) via a linkage arrangement.
  • FIG. 2 shows an exemplary arrangement for controlling the size of the gap between rollers 14, 16.
  • the folding blade 3 has been omitted for ease of illustration.
  • This design is implemented as a modification of the second fold roller design described in U.S. Patent No. 5,937,757 .
  • Roller 14 is mounted on support arm 22, and pivotable about fixed shaft axis 24.
  • Roller 16 is mounted on support arm 20, and pivotable about fixed shaft axis 26.
  • a distal end 32 of support arm 20 is connected to connecting rod bias assembly 48 at pivot pin 45, and distal end 34 of support arm 22 is connected to connecting rod bias assembly 50 at a pivot pin 46.
  • a gap between the rollers 14, 16 increases as the assemblies 48, 50 retract, and decreases as the assemblies 48, 50 extend.
  • the set (minimum) gap between the rollers 14, 16 is set by the position of the screw 72 and supports 74, 76.
  • First end block 483 is secured to support 74 at pivot pin 54
  • first support block 503 is secured to support 76 at pivot pin 64. Movement of the screw 72 causes the pivot pins 64, 54 to become closer or farther apart.
  • Connecting rods 481, 501 are fixed to first block 483, 503 and are slidingly engaged to second block 484, 504, respectively, as described in further detail below.
  • Bias assemblies 48, 50 include pneumatic cylinders 482, 502 and connecting rods 481, 501.
  • the pneumatic cylinders 482, 502 will bias the connecting rods 481, 501 to full extension, causing the rollers 14, 16 to be separated by a minimum gap which is set as a function of the distance between pivot pins 54, 64, which in turn, is set by the screw 72.
  • the screw position can be set manually, or if desired via the controller 10 (dashed lines).
  • the pneumatic cylinders 482, 502 act as a safety feature to prevent equipment damage in the event there is a jam in the second fold roller, in similar manner as described in U.S. Patent No. 5,937,757 .
  • a number of consecutive sections of papers may become stuck between the folding rollers 14, 16.
  • the rollers 14, 16 are forced apart, overcoming the pneumatic pressure of the cylinders 482, 502 and causing them to retract.
  • the pneumatic cylinders 482, 502 keep the rod 481, 501 (which permits center 45 to slide toward center 54) at its greatest length.
  • a hydraulic actuator 80, 82 is coupled to each rod 481, 501.
  • the hydraulic actuators 80, 82 are controlled by the controller 10 to force rods 481,501 to overcome the bias of the cylinders 482, 502 and retract and thereby increase the gap size.
  • controller 10 provides a valve control signal 90 (illustrated as a square wave) to the solenoid valve 91.
  • Solenoid valve 91 is connected to hydraulic actuators 80,82 and variable volume accumulator 92 via line 901. Solenoid valve 91 interacts with accumulator 92 and variable volume accumulator 93 to extend and retract the pistons of the hydraulic actuators 80, 82 according to the valve control signal 90.
  • Line 902 is the return line from accumulator 93.
  • the hydraulic actuators 80, 82 are illustrated as "micro" hydraulic cylinders, each having a piston which is pinned to the rod 481, 501, as shown in further detail in Figures 3B-C .
  • These hydraulic actuators 80, 82 are able to impart sufficient force to overcome the pressure applied by the pneumatic cylinders and cause the pneumatic cylinders to retract, thereby increasing the gap "d".
  • the amplitude of the cylinder movement of the hydraulic cylinder can be varied by varying the volume in the variable volume accumulator. If desired, this can be adjusted manually, or via the controller 10 (dashed lines).
  • FIGS 3A-C show a connecting rod bias assembly 48 in further detail.
  • Connecting rod bias assembly 50 may have the same structure.
  • Figure 3A illustrates the assembly 48 as it would appear on an existing system prior to being modified by variable gap control, and as such, the hydraulic actuator 80 is omitted.
  • a spring 482.1 is shown for providing a bias force for the rod 481.
  • spring 482.1 of Figure 3A can be replaced with the pneumatic cylinder 482 of Figures 2 and Figure 3B , and vice versa. Accordingly, it should be understood that in each of Figures 2 , 3A-E , the pneumatic cylinder 482 can be replaced with a spring 482.1.
  • FIG 3B shows the assembly 48 of Figure 2 with the hydraulic actuator 80 and Figure 3C shows the manner in which the hydraulic actuator 80 is secured to the rod 481 in further detail.
  • assembly 48 includes a connecting rod 481, a pneumatic cylinder 482 (or spring 482.1), a first end block 483 and a second end block 484.
  • Each block 483 has a bore 483.1 into which the rod 481 can freely slide until limited by stop 500 secured to the end of rod 481.
  • the connecting rod 481 is secured or pinned to the second block 483.
  • the opposing ends of the pneumatic cylinder 482 (or spring 482.1) are secured to the first 484 and second 483 blocks respectively.
  • the pneumatic cylinder 482 biases the rod towards extension by exerting a force against the first and second blocks, thereby providing the set gap.
  • piston 801 of hydraulic acutuator 80 is secured or pinned to the rod 481 at stop 500.
  • the pneumatic cylinder 482 applies a bias force against the blocks 483, 484.
  • the addition of sufficient hydraulic pressure through input 802 to exceed the bias force causes the piston to move toward first block 484, resulting in first block 484 moving towards second block 483 and increasing the gap size "d".
  • this will cause the piston 801 to move away from the first block 484, resulting in first block 484 moving away from the second block 483 and decreasing the gap size "d" until it returns to the set minimum gap.
  • the hydraulic actuator 80 is controlled by a solenoid 91 which pressurizes the actuator 80 causing the piston 801 in the actuator to move which, in turn, creates a force upon block 484 moving it toward center 54.
  • rod 481 slides through the bore 483.1 in first block 484.
  • the variable volume accumulator 93 is used to set the amplitude of the force.
  • Variable volume accumulator 93 controls the volume of the hydraulic fluid in the line by diverting some of the fluid accumulator 92.
  • FIG. 2 has the further advantage in that it can be used as a retrofit to upgrade existing second fold rollers that employ either a pneumatic cylinder or spring.
  • existing second fold rollers include rollers 14, 16, support arms 20, 22, lead screw 72, rods 581, 501 and pneumatic cylinders 482, 502 (or springs).
  • a micro hydraulic piston 80, 82 is provided in rod block 484, 504, and is secured to the existing rod 481, 501 at stops 500.
  • the microhydraulic piston is then connected to a controller 10 to dynamically change the gap as described above.
  • pneumatic cylinders 482, 502 may be replaced with springs which would operate similarly to bias the assemblies 48, 50 to extend to the set (minimum gap).
  • the separate pneumatic cylinder (482, 502) and rods (481, 501) could be replaced by a single pneumatic piston cylinder as illustrated in Figure 3F .
  • the hydraulic actuators 80, 82 would be secured to the piston of the pneumatic piston cylinders.
  • micro hydraulic cylinders are illustrated in Figure 2 for overcoming the pressure applied by the cylinders 48, 50, and this is advantageous, it will be appreciated that alternative mechanisms known in the art can be used to overcome the pressure applied by the bias assemblies 48, 50 and cause them to retract.
  • springs, pneumatic cylinders, and pneumatic piston cylinders are advantageous, alternative types of bias assemblies can be used to apply the bias force to reach the minimum gap.
  • Figure 3D shows an alternative arrangement in which the hydraulic actuator 80 (or 82) pinned to connecting rod 481 (or 501) is located in bock 483 (or 503).
  • the other end of the connecting rod 481 (or 501) terminates in stop 500, and is slidable within block 484 (or 504) via a clearance hole or bushing. If a jam condition were to occur, the spring (or alternatively, a pneumatic cylinder) would compress as block 45 is moved towards block 54. The hydraulic actuator 80 (or 82) would not be affected.
  • Figure 3E shows an embodiment wherein the rod 481 (or 501) is a two part telescopic rod, with the inner rod 481.1 secured or pinned to one block (illustrated in reference to block 483) and the outer sleeve 481.2 secured to the other block, and the hydraulic piston pinned or secured to the inner rod 481.1.

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  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Claims (15)

  1. Zweitfalzwalzeneinheit, umfassend:
    ein Paar von Zweitfalzwalzen (14, 16), die jeweils auf einem Stützelement (20, 22) gestützt sind, wobei das Paar von Zweitfalzwalzen einen Spalt (2) dazwischen bildet, um ein Buch zu transportieren, wobei das Paar von Zweitfalzwalzen durch einen Abstand (d) am Spalt getrennt ist;
    ein oder mehrere Betätigungsvorrichtungen (80, 82), die an die Stützelemente gekoppelt sind; und
    eine Steuervorrichtung (10), die mit dem einen oder den mehreren Betätigungsvorrichtungen gekoppelt ist, wobei die Steuervorrichtung die eine oder die mehreren Betätigungsvorrichtungen steuert, um eine Größe des Abstands zu variieren;
    dadurch gekennzeichnet, dass die Größe des Abstands gesteuert ist, um eine erste Größe zu sein, wenn eine vordere Kante des Buchs in den Spalt eintritt, und die Größe des Abstands gesteuert ist, um eine zweite Größe zu sein, nachdem die vordere Kante des Buchs den Spalt verlassen hat und während sich ein Abschnitt des Buchs im Spalt befindet, wobei die zweite Größe größer als die erste Größe ist.
  2. Einheit nach Anspruch 1, weiter umfassend einen Sensor zum Nachweis einer Position einer Faltklinge, wobei die Steuervorrichtung (10) mit dem Sensor gekoppelt ist, wobei die Steuervorrichtung die Größe des Abstands als eine Funktion der Position steuert.
  3. Einheit nach Anspruch 1 oder 2, weiter umfassend
    eine erste Vorspanneinheit (48), die mit dem Stützelement eines ersten des Paares von Zweitfalzwalzen (14, 16) gekoppelt ist;
    eine zweite Vorspanneinheit (50), die mit dem Stützelement eines zweiten des Paars von Zweitfalzwalzen (14, 16) gekoppelt ist; wobei der Abstand die erste Größe ist, wenn die erste und die zweite Vorspanneinheit erweitert sind;
    wobei die eine oder die mehreren Betätigungsvorrichtungen eine erste Betätigungsvorrichtung (80) umfassen, die mit der ersten Vorspanneinheit gekoppelt ist, und eine zweite Betätigungsvorrichtung (82), die mit der zweiten Vorpanneinheit gekoppelt ist, und wobei die Steuervorrichtung (10) die erste und die zweite Betätigungsvorrichtung steuert, um die erste und die zweite Vorspanneinheit zurückzuziehen, um die Größe des Abstands auf die zweite Größe zu ändern.
  4. Einheit nach Anspruch 3, wobei die erste und die zweite Betätigungsvorrichtung hydraulische Kolbenstangenzylinder (80, 82) sind
  5. Einheit nach Anspruch 3 oder 4, wobei die erste und zweite Vorspanneinheit pneumatische Kolbenstangenzylinder (482, 502) sind.
  6. Einheit nach Anspruch 3 oder 4, wobei die erste und zweite Vorspanneinheit jeweils eine Verbindungsstange (481, 501) und entweder eine Feder oder einen pneumatischen Zylinder umfasst.
  7. Einheit nach einem der Ansprüche 3 bis 6, wobei jedes Stützelement (20, 22) ein erstes Ende und ein zweites Ende aufweist, wobei das erste Ende eines der Zweitfalzwalzen (14, 16) stützt und das zweite Ende mit einer Assoziierten der Vorspanneinheiten verbunden ist.
  8. Einheit nach Anspruch 7, wobei jedes Stützelement (20, 22) um einen entsprechenden Zapfen (24, 26) drehbar ist, der sich zwischen dem ersten und dem zweiten Ende befindet.
  9. Einheit nach einem der Ansprüche 1 bis 8, wobei die Steuervorrichtung den Abstand von der ersten Größe zur zweiten Größe ändert, nachdem die Signatur in den Spalt eingetreten ist, und bevor 25,4 mm (ein Inch) einer vorderen Kante der Signatur aus dem Spalt ausgetreten ist.
  10. Verfahren zum Variieren eines Abstands zwischen Zweitfalzwalzen (14, 16) einer Falzvorrichtung, wenn ein Buch durch den Abstand verläuft, umfassend:
    Bereitstellen eines Paars von Zweitfalzwalzen (14, 16), die jeweils auf einem Stützelement (20, 22) gestützt sind, wobei das Paar von Zweitfalzwalzen einen Spalt dazwischen bildet, um ein Buch zu transportieren, wobei das Paar von Zweitfalzwalzen durch einen Abstand (d) am Spalt (2) getrennt ist;
    Drehen des Paars von Zweitfalzwalzen;
    dadurch gekennzeichnet, dass das Verfahren außerdem Folgendes umfasst:
    Einstellen des Abstands (d) auf eine erste Größe;
    Einführen einer vorderen Kante eines Buchs (1) in den Spalt zwischen das drehende Paar von Zweitfalzwalzen, während der Abstand die erste Größe aufweist;
    Ändern des Abstands auf eine zweite Größe, mit einem oder mit mehreren Betätigungsvorrichtungen, nachdem die vordere Kante des Buchs aus dem Spalt (2) zwischen dem drehenden Paar von Zweitfalzwalzen ausgetreten ist, und während sich ein Abschnitt des Buchs im Spalt zwischen dem drehenden Paar von Zweitfalzwalzen befindet, wobei die zweite Größe größer als die erste Größe ist.
  11. Verfahren nach Anspruch 10, weiter umfassend Nachweisen einer Position einer Faltklinge (3) und Ändern der Größe des Abstands als einer Funktion der Position.
  12. Verfahren nach Anspruch 10 oder 11, weiter umfassend
    Bereitstellen einer ersten Vorspanneinheit (48), die mit dem Stützelement eines ersten des Paares von Zweitfalzwalzen gekoppelt ist;
    Bereitstellen einer zweiten Vorspanneinheit (50), die mit dem Stützelement eines zweiten des Paars von Zweitfalzwalzen gekoppelt ist; wobei der Abstand die erste Größe ist, wenn die erste und die zweite Vorspanneinheit erweitert sind; und
    wobei der Schritt des Änderns weiter das Zurückziehen der ersten und der zweiten Vorspanneinheit (48, 50) umfasst, um die Größe des Abstands auf die zweite Größe zu ändern.
  13. Verfahren nach einem der Ansprüche 10 bis 12, wobei der Schritt des Änderns die Änderung des Abstands von der ersten Größe zur zweiten Größe umfasst, nachdem das Buch in den Spalt eingetreten ist, und bevor 25,4 mm (ein Inch) einer vorderen Kante des Buchs aus dem Spalt ausgetreten ist.
  14. Verfahren nach mindestens Anspruch 12, wobei die erste und zweite Vorspanneinheit pneumatische Kolbenstangenzylinder (482, 502) sind.
  15. Verfahren mindestens nach Anspruch 12, wobei die erste und zweite Vorspanneinheit jeweils eine Verbindungsstange (481, 501) und entweder eine Feder oder einen pneumatischen Zylinder (482, 502) umfasst.
EP14165250.3A 2014-04-17 2014-04-17 Zweitfalzwalze mit varibaler Abstandssteuerung Not-in-force EP2933215B1 (de)

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TWI825821B (zh) * 2022-07-03 2023-12-11 健彰實業股份有限公司 可嬈性網體熱壓褶皺製造設備

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Publication number Priority date Publication date Assignee Title
US3954258A (en) 1975-03-24 1976-05-04 Rockwell International Corporation Second fold roller mounting and adjustment means
DE4020937C2 (de) 1990-06-30 1996-07-11 Koenig & Bauer Albert Ag Längsfalzvorrichtung
DE59604849D1 (de) 1995-11-08 2000-05-04 Koenig & Bauer Ag Falzvorrichtung
US5937757A (en) 1998-01-07 1999-08-17 Goss Graphic Systems, Inc. Gap adjusting device with pressure relief for a second fold roller
US6279890B1 (en) 2000-04-11 2001-08-28 Goss Graphic Systems, Inc. Combination rotary and jaw folder for a printing press
US8105227B2 (en) * 2009-04-29 2012-01-31 Xerox Corporation Pressure reducing folding system
JP5631056B2 (ja) * 2010-05-14 2014-11-26 キヤノン株式会社 シート処理装置

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