EP2411313B1 - Procédé destiné à la correction d'une position inclinée d'un produit sortant d'un espace séparant deux cylindres de pliage d'une plieuse longitudinale et plieuse longitudinale - Google Patents

Procédé destiné à la correction d'une position inclinée d'un produit sortant d'un espace séparant deux cylindres de pliage d'une plieuse longitudinale et plieuse longitudinale Download PDF

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Publication number
EP2411313B1
EP2411313B1 EP09801215.6A EP09801215A EP2411313B1 EP 2411313 B1 EP2411313 B1 EP 2411313B1 EP 09801215 A EP09801215 A EP 09801215A EP 2411313 B1 EP2411313 B1 EP 2411313B1
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EP
European Patent Office
Prior art keywords
product
folding
folding table
braking
stop
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EP09801215.6A
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German (de)
English (en)
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EP2411313A1 (fr
Inventor
Markus Wilhelm Decker
Klaus Friederich
Christof Horst HÖGER
Holger Ratz
Gerd Weiler
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Koenig and Bauer AG
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Koenig and Bauer AG
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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
    • B65H43/00—Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
    • B65H43/08—Photoelectric devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/14—Retarding or controlling the forward movement of articles as they approach stops
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/33—Modifying, selecting, changing orientation
    • B65H2301/331—Skewing, correcting skew, i.e. changing slightly orientation of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/50—Surface of the elements in contact with the forwarded or guided material
    • B65H2404/56—Flexible surface
    • B65H2404/561—Bristles, brushes
    • 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
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • B65H2511/514—Particular portion of element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/51—Sequence of process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading edge

Definitions

  • the invention relates to a method for correcting an inclined position of a product emerging from a folding nip of two folding rollers of a longitudinal folding apparatus according to the features of claim 1 and a longitudinal folding apparatus according to the preamble of claim 11.
  • a longitudinal folding apparatus is known, the folding table on each side of the folding knife a braking device, for. B. a brake brush is provided in order to prevent the product to be folded from coming into contact with the stop at full speed. Rather, the product should be braked in a defined manner via the braking device and aligned with the stop in a defined manner.
  • Each brake brush is mounted on a holder and is adjustable via actuators, the two brake devices being connected in such a way that they can be moved away from the folding table together.
  • the DE 694 00 629 T2 discloses a longitudinal folding device with a folding knife and a stop delimiting the folding area on the folding table. Furthermore, a brush brake device with brushes is provided, a servo unit being provided for setting the brush pressure for each brush or brush group.
  • Two sensor systems spaced apart transversely to the product direction are provided on both sides of the folding knife, which on a product path side each consist of a plurality of in the transport direction by z. B. 1 mm spaced detectors, as well as exist on the other side of the product path of an infrared source illuminating the respective sensor system. The measuring range of these sensor systems extends over an area lying in front of the stop and an area in front of it on the product side.
  • a possibly incorrect braking effect can be identified and automatically corrected.
  • a comparison of the distance between the stop and the product edge via the degree of coverage of the two sensor systems enables the front edge to be checked for inclined or incorrect alignment.
  • the effect of the braking device is adjusted depending on the display of the sensor device in such a way that the folding knife acts on each product when it is optimally aligned in the folding area, with the front edge facing the stop face so that the printed product does not damaged and accurately folded.
  • the folding knife moves out of phase with the printed product feed, so that it moves downwards in order to come into engagement with the top of each printed product when it is completely in the folding area, with the front edge being directly on or very close to the stop face comes.
  • the braking effect can be regulated by changing the phase setting of its folding movement.
  • a longitudinal folding device and a method for operating the longitudinal folding apparatus is known, two speeds being determined one behind the other in the transport direction by means of two detector systems and the product to be folded longitudinally by a frictional connection exerted on the printed product, e.g. B. by the folding knife, is reduced from the first speed to the second speed while the printed product moves along a braking distance on the folding table.
  • the point in time for a start of the frictional engagement braking the printed product, e.g. B. the first contact with the folding knife is set as a function of a deviation which a determined actual value of the second speed of the printed product has from a predetermined setpoint value for this second speed.
  • the aim here is to push the product against the stop To ensure deceleration and alignment.
  • the DE 198 56 373 A1 relates to an early warning system and method for detecting jams of printed signatures.
  • sets of sensors are provided after the cross cutter of the cross folding apparatus and upstream of two longitudinal folding devices. If a tilt is detected, an error message is output and the printing press is braked or stopped.
  • a method and a device for determining the accuracy of a fold position is disclosed, with markings printed on the imbricated flow being detected in the product display, the position of which is relative to the fold spine and a statement about the fold quality is to be made.
  • This can serve as an aid for the operator in diagnosing errors and also enables feedback of the folding accuracy to the folder.
  • measures to increase the folding accuracy can be initiated, such as B. a correction of a phase position from the folding knife to the folding jaw, a regulation of a speed of the transport element transporting the imbricated flow, or even switching off the printing machine.
  • a pocket folding device with a sensor wherein the sensor or two sensors spaced transversely to the transport direction characterize the process of the impact of the leading workpiece edge.
  • the sensor or sensors can be designed as a microphone, as an acceleration sensor, as a strain measuring strip, or in the form of ultrasonic sensors. In the latter case, it should be possible to generate orientation signals characterizing the orientation of a leading edge to be moved towards the pocket stop. Adjusting means for adjusting the orientation of the pocket stop are controlled by means of the measured values from the sensor or the sensors.
  • the DE 32 34 148 A1 relates to a method and a device for checking folded sheets for deviations between the fold line and the desired fold line as a function of the type area in pocket or knife folders.
  • two sensors spaced transversely to the flow are provided in the flow of the folded products, which detect the distances between the fold marks applied to the product and the fold edge, with an evaluation unit calculating, displaying and displaying an average value deviation from the nominal value for length and angle deviations of the fold break from this information / or to control the machine. This enables specific correction of set machine values.
  • a sheet feed of sheets to be printed into a printing unit of a sheet-fed printing machine whereby information about the position of a separated sheet to be fed to the printing unit is provided by means of two ultrasonic sensors spaced transversely to the flow before it is fed to the printing unit by a gripper.
  • an inclined position or a faulty double position can be identified, which is connected to a control and regulating device connected to the gripper.
  • the DE 195 04 769 A1 relates to a longitudinal folding apparatus, whereby first sensors are provided on the front wall of the stop or in recesses of the stop, which measure the distance of the front edge while the product to be folded is sliding towards it and a control circuit evaluates by comparison whether both halves are approaching at the same speed. If one side is closer to the stop, the brake arrangement assigned to this side is brought closer to the folding table in order to brake this side more strongly. Further sensors are provided for measuring a curling of the folded copy. These sensors measuring the waviness can, as optical sensors, detect the distance to the top of the product or, as strain gauges, the force exerted on them by the deformation of the top measure up. When a maximum value is exceeded, the position of the braking devices is changed.
  • the invention is based on the object of creating an improved method for longitudinally folding a product on a folding table of a longitudinal folding apparatus and a longitudinal folding apparatus suitable for this purpose.
  • a longitudinal folding device also referred to as a "third fold” or “second longitudinal fold” in web-fed rotary printing presses, is created for higher performance and less manual intervention with good folding quality.
  • z. B a lever folding knife system with sensor-controlled folding time regulation (z. B. folding time regulation of the folding knife) and / or a sensor-controlled inclination control (inclination correction by brushing), z. B. with four motorized brush systems that are integrated in an automatic control, application.
  • An optimal adaptation to the requirements can be achieved by means of a control concept based on the operating modes and / or phases.
  • Fig. 1 shows one designed as a longitudinal folder 01, or folder 01 for short Processing stage 01 in a simplified sectional view (without details such as brush systems described below), Fig. 2 in a simplified side view and Figs. 3 to 5 schematically in plan view.
  • the longitudinal folding apparatus 01 comprises a folding table 02 or an upper side of the folding table 02, in which an elongated folding gap 06, in particular parallel to a first transport direction T1 of a product 03 entering the longitudinal folding apparatus 01 from an entry side 18, is provided.
  • This product 03 or intermediate product 03 represents e.g. B. a possibly previously already longitudinally and / or transversely folded product section of a printed product printed in a web processing machine, preferably a printing machine, in particular a web-fed rotary printing machine.
  • folding rollers 07 Under the folding table 02 at the level of the folding gap 06 there is a pair of folding rollers 07 ( Fig. 1 , 2 and 3 ) arranged in such a way that they form a gap which is oriented parallel to the folding gap 06 and located directly below it.
  • a folding knife 04 is also provided, which is also oriented parallel to the folding gap 06, which dips into the folding gap 06 by moving up and down and leaves it upwards again.
  • pivotable levers 08, z. B. folding levers 08 which carry the folding knife 04. When the folding levers 08 are pivoted, the folding knife 04 can penetrate into the folding gap 06.
  • a one-piece or segment-like stop device 09 delimiting the path of the product 03 in the active position, the stop surface facing a product 03 - one or more parts - essentially in a line transverse to the alignment of the rebate gap 06 runs.
  • the folding knife 04 is preferably in the form of one that can be moved up and down with respect to the folding table 02 relative to the folding table 02, e.g. B. pivotable, knife 04 executed.
  • the knife 04 is z. B. mounted on the folding levers 08, which in turn are mounted pivotably about an axis 11 with respect to the folding table 02.
  • the knife 04 can also be used as a be arranged eccentrically on a continuously rotating body of revolution. It can also be arranged eccentrically on a rotating planet gear.
  • the movement of the folding knife 04 is mechanically driven by the drive of the upstream units (such as the drive of printing units and / or the drive of a cross folder and / or the drive of the folding process upstream conveyors) independent drive, in particular a drive means 17 independent of these units, e.g. B. a drive motor 17 is provided.
  • the drive of the upstream units such as the drive of printing units and / or the drive of a cross folder and / or the drive of the folding process upstream conveyors
  • a drive means 17 independent of these units e.g. B. a drive motor 17 is provided.
  • the folding knife 04 is preferably driven via a cam gear.
  • the folding knife 04 is arranged on the lever 08, which is at a pivot point, for. B. the axis 11, is pivotably mounted.
  • the lever 08 can either be a lever arm 08 of a lever designed as a double lever with a second lever arm 12, or else be designed as a one-armed lever, the second lever 12 then being non-rotatably connected to the rotatably mounted axle 11.
  • At the fulcrum remote end of the second lever 12 (or second lever arm 12) is a curved line of a rotatable body 13, for. B. a cam 13, cooperating stop 14, z. B. executed as rotatably mounted on the lever 12 roller 14, arranged.
  • the cam 13 is rotatably mounted on a shaft 16, which can be driven in rotation either directly or via a transmission by the drive motor 17, which is only indicated schematically.
  • the cam 13 can preferably be one in relation to its axis of rotation have irregular and asymmetrical curved lines which, when rotated via the crank mechanism (levers 08 and 12), cause a corresponding movement of the folding knife 04.
  • the cam disc 13 is designed as a circular disc with a circular circumferential line, which, however, is arranged eccentrically on the shaft 16.
  • its rotation causes a defined up and down movement of the folding knife 04, whose movement profile is fixed when the shaft 16 or the drive motor 17 rotates constantly, but the speed for the sequence of this fixed movement profile is dependent from the drive speed of the shaft 16 or the drive motor 17 is variable.
  • the knife 04 thus continuously moves through a periodically recurring movement profile during operation in its up and down movement, the phase length (period length) representing a complete up and down movement up to the next same phase position with the same direction of movement and its frequency as specified the drive speed of the shaft 16 or the drive motor 17 is determined and preferably changeable.
  • the folding knife 04 is thus mechanically independent of the longitudinal folding apparatus 01 upstream conveyor and / or production devices (such as conveyor or transport belts feeding the product 03 and / or printing units and / or an upstream transverse folding apparatus) , e.g. B. assigned own drive means 17.
  • the drive means 17 can then be designed in the above-mentioned manner as a drive motor 17, which via a transmission, for. B. cam gear, an eccentric or a crank drive, the folding knife 04 clocked to a desired position of a product 03 on the folding table 02 lowers or raises.
  • the drive motor 17 via a mechanical drive connection, for. B. via a gear connection from the shaft 16, the folding rollers 07 driven in rotation.
  • the paddle wheel 21 and / or possibly even the delivery device 22 could also be driven by the drive motor 17 via corresponding drive connections.
  • the impeller 21 advantageously has its own, not shown Drive motor on.
  • a holding brake can be provided, which with a non-rotatable with a motor shaft or the folding knife drive, z. B. the shaft 16 or the cam 13, connected brake disc acts together.
  • the drive 17 is controlled, for example, by a folding blade drive (and / or, if these are driven together, the folding roller drive) associated with Fig. 1
  • Control and / or regulating device 10 indicated only schematically as a box, or control device 10 for short, which using information detailed below regarding a speed V of the printing press or a conveyor line conveying the product 03 to and / or into the folder 01 and / or using information from sensors Sx (see below) controls the drive of the folding knife 04 in such a way that the movement of the folding knife 04 is synchronized with the product stream of the products 03 entering the longitudinal folding apparatus 01 in a desired manner and, if necessary, the synchronization in their relative phase position ⁇ is or can be consciously varied or corrected (see below).
  • the folding knife 04 is preferably driven in the stationary operating state with respect to its folding frequency, synchronized with the product flow to be fed to the folding apparatus 01.
  • this synchronization can in principle be based on a speed V of the upstream printing press or its drives, e.g. B. on a unit of the printing press, on an upstream folder or on an upstream conveyor line that promotes the products 03.
  • the basic synchronization with respect to the folding frequency e.g. B. the speed of the drive motor 17, in a simpler embodiment, for example, via signal transmitters on upstream systems, eg. B. on a moving part of the conveyor line, or via the frequency of the incoming products 03 or, as described below, via an electronic master axis.
  • the at least speed-synchronous drive of the folding knife 04 is advantageously carried out on the basis of data, in particular data relevant to speed and / or angular position, from the electronic or virtual master axis.
  • data can be based on angular positions of a revolving master axis, on angular speeds and / or on a speed specification, which is specified in the Fig. 1 is indicated as a circumferential angular position t (t) or more generally as a speed V.
  • These master axis data are, for. B.
  • control module 23 assigned to the drive motor 17, for the direct control of the drive motor 17 or a control loop that regulates the position and / or speed of the drive motor 17.
  • the control module 23 can be used as a purely software-based control process 23 within a sterile device containing several such or different control processes or as a structurally separate unit, e.g. B. with its own housing or as a plug-in card, as a so-called.
  • control module 23 is shown in the figures as part of a control device designated overall with control device 10, the components of which are in a common control means, e.g. B. logic circuit arrangement (z. B. PLC) and / or data processing means (z. B. computer, PC), or in several, signal-technically interconnected control means, z. B. Logical circuits (e.g. PLCs) and / or data processing means (e.g. computer, PC) are provided.
  • a common control means e.g. B. logic circuit arrangement (z. B. PLC) and / or data processing means (z. B. computer, PC)
  • z. B. Logical circuits e.g. PLCs
  • data processing means e.g. computer, PC
  • the above-mentioned signal processing of the master axis data in z. B. the control module 23 and / or the control device 10 takes place, for example, taking into account a geometry-related offset value ⁇ (z. B. correction angle ⁇ ) and / or gear factor G.
  • the former ( ⁇ ) represents the relative phase position between z. B. the circumferential master axis angular position ⁇ (t) (or a position and / or clock generating unit) and the folding knife position for the correct folding time and the latter (G) brings the phase length (period length) of the master axis revolution or the following machine movement (product generation, e.g.
  • the above to be set target relative position ⁇ R goes z. B. in the offset value ⁇ or even corresponds to this in the event that no other geometrically caused offset variables are to be taken into account.
  • the desired relative position ⁇ R to be set can be monitored and maintained via a control loop that compares and, if necessary, corrects the product flow (e.g. by means of an input-side sensor S0) and the folding knife phase position (e.g. on its drive).
  • a correspondingly synchronized operation with regard to a required relative position ⁇ R to be maintained can then take place, for example, as shown:
  • the longitudinal folding apparatus 01 or its folding knife 04 is driven by the drive motor 17 through the conveying section which is mechanically independent of the upstream products 03 conveying. If the relative phase position deviates, ie the actual relative position ⁇ between the product phase position ⁇ P , z. B. determined on an "input sensor", e.g. B. a sensor S0 at the entry point 18 or on the upstream conveyor line, and the angular position ⁇ A of the folding knife drive, z. B.
  • a correction is made by a relative phase change between the conveyor drive and the folding blade drive, z. B. by relative rotation of the folding blade drive by a correction angle ⁇ .
  • This can e.g. B. happen that the folding knife 04 driving drive motor 17 depending on the deviation time limited faster or slower than the speed V, z. B. the speed corresponding to the machine speed or the conveyor speed is operated until the target relative position ⁇ R is restored.
  • the offset value ⁇ is varied accordingly by a correction value in order to restore the setpoint relative position ⁇ R or the resulting setpoint angular position ⁇ 3 .
  • This inner control loop for maintaining a specified target relative position ⁇ R or target angular position ⁇ 3 is shown in Fig. 6 not specifically shown.
  • this control loop thus controls depending on the arrival time of the product 03 at a sensor provided for this purpose, e.g. B. by means of a sensor S0 upstream of the folding knife 04, the phase position of the folding knife 04, in particular its drive motor 17, relative to the product 03.
  • a signal representing the entry or exit of a product 03 is detected by means of the sensor S0, one for Time of the signal assumed angular position ⁇ A of the drive motor 17 detected, z. B.
  • the actual relative position ⁇ is determined, and this The actual relative position ⁇ l is compared with the required relative position ⁇ R , and if there is a discrepancy, as described above, a phase change is made by means of a correction angle ⁇ .
  • the longitudinal folding apparatus 01 is operated in production operation in such a way that the conveyed product 03 is first touched by the folding knife 04 while the product 03 is still moving on the folding table 02 and before the stop 09; (or 46, see below) is located.
  • a (“basic") synchronization of the folding blade phase with the product phase can be advantageous.
  • z. B. initially conveyed a product 03 into an intended contact position on the folding table 02 at a lower set-up speed than a production speed, and after reaching the intended contact position with the conveyor line at rest, the drive or drive motor 17 of the folding blade 04 is rotated until the folding blade 04 is in the movement phase on the product 03 to this just touched or is about to touch (first contact).
  • z. B. the assumed for the contact position angular position ⁇ A of the folding knife drive or drive motor 17 as a zero angle position (for the Abfalzzeitddling) recorded, then with an active conveyor line z. B.
  • This setpoint relative position ⁇ R assigned to the drive motor 17 could then in principle be retained and held for a production run or even generally.
  • a procedure explained in more detail below is advantageous, according to which the target relative position ⁇ R or the offset value ⁇ - and thus the folding time or the time and / or location of the first contact between product 03 and folding knife 04 on folding table 02 - close Control purposes of the folding process is specifically varied. This can then, for example, by adding a corresponding, positive or negative correction value k ⁇ already in the control module 23 or the drive controller 23, for example by changing the memory value for the setpoint relative position ⁇ R or the offset value ⁇ (as in Fig.
  • a correction value k ⁇ (not shown) to the target angular position ⁇ S (T) generated by the control module 23 or the drive controller 23 for the time T.
  • the determination of such a correction value k ⁇ ; k ⁇ can, as explained in more detail below, in a control module 51 (possibly also just a software control process) directly from stored relationships with the production process related data M (z. B. production phase and / or speed and / or product strength and / or used Substrate) take place, e.g. B. can be read from stored tables or functions.
  • the determination can preferably take place in a correspondingly designed process module 51 using the aforementioned data M relating to the production process and measured values relating to the folding process (e.g. phase positions and / or product positions).
  • Fig. 6 is the process module 51 in the z. B. as a drive controller 23 implemented control module 23, but can also be designed as an integrated or independent, but signal-technically connected to the control module 23 or the angle signal fed from the control module 23 to the drive motor 17 module.
  • the target angular position ⁇ S (T) in the correspondingly designed control device 10 is thus preferably derived from the master axis angular position ⁇ (t) using a possibly required gear factor G and an offset value ⁇ formed, the latter either by a correction values k ⁇ ; k ⁇ variable specification for the relative position ⁇ R itself is varied or the variable specification for the relative position ⁇ R is taken into account separately in a different way in the algorithm for determining the target angular position ⁇ S (T). As in Fig. 6 indicated, applies z. B.
  • this procedure can also be applied to a control of the drive that is based only on a speed or rotational speed setpoint specified by the master axis.
  • a control of the drive that is based only on a speed or rotational speed setpoint specified by the master axis.
  • at least one reference angle signal per motor revolution and / or per folding knife cycle must be available for the phase adjustment.
  • a variation of the relative phase position can then be achieved by a time-limited variation of the speed specification via a corresponding offset or correction value ⁇ ; k ⁇ ; k ⁇ take place.
  • the drive means 17 designed as a drive motor 17 is thus at least as a drive motor 17 which can be regulated with respect to its speed, e.g. B. electric motor formed. In an advantageous further development, it is designed as a stepping motor or even preferably as a drive motor 17 which can be regulated with regard to its rotational angle position.
  • the design of the drive motor 17 as a drive motor 17 that can be regulated at least with regard to its speed or with regard to a relative change in position (defined steps) or preferably with regard to an absolute angular position is particularly advantageous with regard to the procedure (s) described below for setting and / or variation of the synchronization of folding blade movement with regard to the product position and / or changing operating parameters (e.g. machine speed, machine acceleration, product properties, etc.).
  • the drive of the folding knife 03 could be mechanically coupled to upstream conveying and / or production facilities (see above), but a relative speed and / or relative phase position compared to the upstream units, e.g. B. is designed to be changeable and controllable via a remotely operated steplessly variable in the gear factor in the drive branch for driving the knife 04.
  • a relative speed and / or relative phase position compared to the upstream units e.g. B.
  • a relative speed and / or relative phase position compared to the upstream units e.g. B. is designed to be changeable and controllable via a remotely operated steplessly variable in the gear factor in the drive branch for driving the knife 04.
  • the senor S0 for. B. be provided in the first transport direction T1 in front of the folding gap 06, which is connected to the control device 10, and based on the product passage signals, the described basic triggering of the folding blade drive takes place.
  • one of the sensors or measurement locations or measurement points S1 to S4, S7 or S8 mentioned below, in particular possibly S3 and / or S4, could be used to process a corresponding signal in a manner described for sensor S0. This is then done z. B. as described by comparing the phase position of the sensor S0 or the alternatively used sensor, z. B. S3, passing or entering products 03 and the phase position of the folding knife drive, z. B.
  • the described setting and triggering of the phase position of the folding knife 04 in relation to the product flow is preferably supplemented by one or more of the methods described below.
  • measures are shown below, which are considered individually, but are particularly advantageous in combination with several of these measures.
  • the measures relate to corresponding designs of the longitudinal folder 01 as well as procedures for operating the folder 01.
  • an ideal folding time or an ideal folding location is ensured despite varying production speeds V and / or different products 03 (thickness, material) by a device and procedure for controlling the folding time explained below.
  • a first and a second sensor S1 which detects the presence of the product 03 in the respective detection area (measurement location) on the folding table 02; S2 (or measuring location S1; S2) are provided, which, viewed in the first transport direction T1, are spaced from one another.
  • S1 which detects the presence of the product 03 in the respective detection area (measurement location) on the folding table 02
  • S2 or measuring location S1; S2
  • the two sensors to be evaluated S1; S2 or measuring locations S1; S2 are significantly spaced from one another in the first transport direction T1, but preferably adjacent to one another when viewed in the first transport direction T1, that is to say without the need for further measurement locations arranged in between.
  • a first sensor S1 is provided directly on or immediately in front of the surface of the stop device 09 that acts as a stop surface or is at least arranged in such a way that it detects the presence of the product 03 on the folding table 02 at a measuring location S1 directly on or immediately in front of the stop surface.
  • Sensor S1 or its measurement location S1 are not here at all, or z. B. at most 10 mm, preferably at most 5 mm in front of the effective surface of the stop device 09 as a stop surface.
  • the sensor S1 or its measurement location S1 is preferably as close as possible at the same time, e.g. B. transversely to the first transport direction T1 at most by a distance a1 of 100 mm, advantageously at most 50 mm, preferably at most 15 mm from a preferably substantially vertical plane E extending through the longitudinal direction of the folding knife 04.
  • a second sensor S2 is preferably provided, which or its measurement location S2 viewed in the first transport direction T1, e.g. B. at least 3 mm, but at most a distance a1,2 of 20 mm, advantageously by a maximum of 10 mm, preferably by 3 mm to 8 mm, from the stop surface of the stop device 09 or from the first sensor S1 and / or across the first Transport direction T1 considered z. B. by a distance a2 of at most 50 mm, advantageously at most 20 mm, preferably at most 10 mm, from the plane E or, if the sensor S1 is present, from the sensor S1 or its measurement location S1.
  • the products 03 to be folded are z. B. held in a so-called “capture area" between sensor S1 and sensor S2.
  • Capture area between sensor S1 and sensor S2.
  • Sensor S1 should / must not "see”, ie the product 03 to be folded over must not be detected at measuring location S1 of the first sensor S1, and sensor S2 should see, that is, each product 03 to be folded should be before or at least during the folding at measuring location S2 of the second Sensor S2, at least briefly, are detected. This position is achieved by shifting the contact between folding knife 04 and product 03 over time and is maintained during this operating mode.
  • folding time ie the relative phase position ⁇ between the product entry and the folding knife phase position
  • folding time ie the relative phase position ⁇ between the product entry and the folding knife phase position
  • the drive in particular the drive motor 17 when calculating the target angular position ⁇ S (T), depending on the direction of the required change, a positive or negative, correction value k ⁇ 1 (or k ⁇ 1) is applied.
  • This is done, for example, by a defined relative rotation of the cam 13, which is independent of upstream and / or the folding table 02 associated transport devices, such as. B. belts, is driven via the drive motor 17 by the above-mentioned target relative position ⁇ R or the offset value ⁇ containing or representing this with a corresponding correction value k ⁇ ; (k ⁇ ) is applied.
  • FIG Fig. 7 An advantageous embodiment of a stepwise regulation of the folding time for the longitudinal fold (e.g. also referred to as a third fold or as a second longitudinal fold) with partial or complete use of the above-mentioned devices is described below and with reference to FIG Fig. 7 explained:
  • the products 03 become harder and harder against the stop 46 with increasing machine speed; (09) driven and from a critical speed V, the z. B. also depends on the nature of the product 03 is damaged.
  • the automatic start-up (especially synchronous with the upstream Web-fed rotary printing press z. B. via the electronic master axis) is in several, z. B. four, operating modes or levels divided.
  • a first mode of operation is, for example, an acceleration phase of the machine.
  • the production speed V and the associated frequency of the incoming products 03 z. B. increased along a predetermined curve or ramp.
  • the movement of the folding knife 04 is regulated so that the product contact of the folding knife 04 occurs earlier successively.
  • the point of contact between the folding knife 04 and the product 03 is gradually and deliberately removed from the stop 46; (09) regulated away, d. H.
  • a later point in time for a lower production speed V and an earlier point in time of the first contact for a higher production speed V are regulated in such a way that no contact or at most contact of the stop 46; (09) without significant speed, i.e. H. a speed of essentially 0 m / s, e.g. B. less than 0.3 m / s, in particular less than 0.1 m / s.
  • This process is exemplary for three different speeds V, which are achieved one after the other during acceleration, in ascending order in the partial images 1., 2. and 3. der Figure 7a ) shown. It can be seen here that the product 03 increases with Speed V further from stop 46; (09) is removed. In this case, with increasing speed V (part 1, 2, 3), the folding drive or drive motor 17 is controlled in such a way that the contact occurs earlier and earlier relative to the position of the product 03 on the folding table 02. This is z. B. causes that as soon as the sensor S1, z. B.
  • a product leading edge detects the above-mentioned target relative position ⁇ R or the offset value ⁇ containing this with a correction value k ⁇ 2; (k ⁇ 2) is applied.
  • the previously changed setpoint relative position ⁇ der R or the changed offset value ⁇ containing this is again given the correction value k ⁇ 2; (k ⁇ 2) applied.
  • This correction value k ⁇ 2; (k ⁇ 2) can be stored in a memory, e.g. B. in a memory of the control device 10, the control module 51 or a machine control, held and preferably changeable.
  • a second advantageous mode of operation (e.g. a second stage of a production cycle) ( Figure 7b )) describes z. B. a constant production speed V, for example below a certain second limit speed V2, z. B. V2 ⁇ 45,000 copies / hour.
  • V constant production speed
  • V2 z. B. V2 ⁇ 45,000 copies / hour.
  • the time at which the folding knife 04 is used is the stop 46; (09) regulated, that is, for example, the folding knife drive is delayed (correction of the existing nominal relative position ⁇ R ). This is done again by successively applying the current target relative position ⁇ R with a, here z. B. negative, correction value k ⁇ 3; (k ⁇ 3).
  • the product 03 touches the stop 46; (09) either just not yet or at least no significant speed, ie a speed of essentially 0 m / s, e.g. B. less than 0.3 m / s, in particular less than 0.1 m / s. It is advantageous if an additional manual correction of the folding knife position towards or away from the Stop 46; (09), ie a manual change of the target relative position ⁇ R obtained can be carried out. At a constant production speed V, e.g. B. less than V2, the product 03 is thus on or in the immediate vicinity of the stop 46; (09) positioned and folded. The product 03 then has no or only slight contact with the stop 46; (09).
  • the stop 46; (09) can be used here, e.g. B. pneumatically, be turned off.
  • the folding position is determined by the sensor S1 at or directly in front of the stop 46; (09) and the second sensor S2, the z. B. about 5 mm from the stop 46; (09) sits, supervises.
  • a product leading edge is the contact point of the folding knife 04 z. B. by applying a correction value k ⁇ 3 to the target relative position ⁇ R ; (k ⁇ 3) based on the signals from sensor S1 from stop 46; (09) regulated away, ie the time of the first contact moved forward.
  • the z. B. can be dependent on the product cycle (speed), no more products 03 are detected, the contact point is again to the stop 46; (09), so z. B. the relative angular position of the drive, regulated again in the other direction.
  • a limit speed V2 e.g. B. V2 ⁇ 45,000 copies / hour
  • V2 e.g. B. V2 ⁇ 45,000 copies / hour
  • the sensor S1 the product edge regulated by successively subjecting the target relative position ⁇ R so that the application takes place when no product 03 is detected at the sensor S1 over a time window T3.
  • the product 03 is in this mode of operation directly in front of or at the stop 46; (09) positioned.
  • the signals m2 of the second sensor S2 and the signals m1 of the first sensor S1 are z. B. detected via a probe function of the control device on two probes.
  • the probe function for probe 1 and 2 is used e.g. B. set via an integrated PLC of the drive control 23 and takes place z. B. when the drive control 23 has reached the operating mode.
  • the longitudinal folding apparatus 01 additionally has one or more devices and / or procedures for monitoring and correcting an inclined position of the product 03 to be longitudinally folded on the folding table 02 and / or an inclined position of one of the folding rollers 07 leaving longitudinally folded product 03 on ( Fig. 5 and 10 ).
  • At least one braking device 24 is provided in the longitudinal folding apparatus 01 above the folding table 02; 36 are provided, which have at least two braking elements 31; arranged transversely to the first transport direction T1, in particular on both sides of the folding gap 06.
  • 32; 33; 34 or groups 26; 27; 28; 29 of deceleration elements 31; 32; 33; 34 has which, in an advantageous embodiment, for. B. as brushes 31; 32; 33; 34 or groups of brushes 26; 27; 28; 29 are formed.
  • one or more of the braking elements 31 provided for correcting the inclined position of the folding table 02; 32; 33; 34 or groups 26; 27; 28; 29 of deceleration elements 31; 32; 33; 34 apply for both purposes.
  • braking elements 31; 32 or groups 26; 27 one Braking device 24 closer to the entry side.
  • the braking elements 31; 32; 33; 34 or groups 26; 27; 28; 29 of deceleration elements 31; 32; 33; 34 preferably have actuators 41; 42; 43; 44, e.g. B. drives 41; 42; 43; 44 on.
  • two sensors S3 and S4 that detect the presence of the product 03 on the folding table 02 are provided (see Fig Fig. 3 ), which or their measuring points S3; S4 viewed transversely to the first transport direction T1 from one another by a distance a3,4, e.g. B. are spaced apart by at least 100 mm, advantageously by at least 150 mm, preferably by 150 mm to 250 mm.
  • the two sensors S3 and S4 or their measuring points S3; S4 are preferably arranged on both sides of a plane E extending through the longitudinal direction of the folding knife 04, in particular approximately equidistant from this plane E (ie up to a deviation of ⁇ 10 mm).
  • You or their measuring points S3; S4 are preferably arranged in the same alignment running perpendicular to the first transport direction T1 and / or perpendicular to the plane E. Furthermore, they can advantageously be arranged at essentially the same vertical distance a03, in particular a03 of 3 mm to 10 mm, from a product 03 lying on the folding table 02 between folding table 02 and sensor S3 or S4.
  • the two sensors S3; S4 or measuring points S3; S4, viewed in the first transport direction T1, are preferably at a distance aT1 from the position of the stop surface in the active state of the stop device 09; (46) arranged, which is at least 20 mm, advantageously at least 30 mm, preferably between 30 mm and 200 mm, in particular approximately 40 mm.
  • aT1 a distance from the position of the stop surface in the active state of the stop device 09; (46) arranged, which is at least 20 mm, advantageously at least 30 mm, preferably between 30 mm and 200 mm, in particular approximately 40 mm.
  • they are advantageously arranged in the area of the folding table 02, ie between the entrance area of the entry side 18 and the stop device 09 or the above-mentioned distance.
  • they are oeiden sensors S3; S4 or measuring points S3; S4 viewed in the first transport direction T1 at a level in the area of the immersion length of the folding knife 04, in particular at the level of a braking device 36; 24, ie, for example, across the first transport device T1 viewed with the immersion length or a length L33 of braking elements 31; 32; 33; 34 arranged overlapping.
  • the sensors S3 and S4 or their evaluation means detect a time offset when the leading product edge passes through. If there is a deviation ⁇ t1 in the time offset from a target time offset, e.g. B. with several successive products 03, present, the drive begins 41 to 44, z. B. drive 41 or 42, the side on which the product edge is recognized first, "his" brush group 26; 27; 28; 29 or brushes 31; 32; 33; 34, in particular brushes 31 or 32; turn down. With a higher brush pressure on one side of the product, this side is held back more than the other and thus rotated slightly. If the changed braking effect then leads to an adjusted folding time, z. B.
  • the drive 41 to 44 for. B. drive 41 or 42, the side on which the product edge is recognized as the second, "his" brush group 26; 27; 28; 29 or brushes 31; 32; 33; 34, especially brushes 31 or 32, up. Due to the lower brush pressure on one side of the product, this side is held back less than the other and the product 03 is thus also rotated slightly. If necessary, the time of folding is corrected as set out above.
  • signals m3 and m4 from sensors S3 and S4 takes place, for example by appropriate means in a control module 38 (possibly also just a software control process 38), briefly module 38, which z. B. can also be part of the control device 10 (as shown) or individually.
  • the signals m3 and m4 of the sensors S3 and S4 are fed into this module 38, these signals m3 and m4 are evaluated, and a result in the form of an actuating signal is sent to one or more of the drives 41; 42; 43; 43, in particular drive 41 and / or 42, out.
  • the principle of tilt detection is z. B. implemented with the help of a trigger module.
  • the module 38 has z. B. two signal inputs, e.g. B. inputs E1; E2, a pulse output A1 and a direction output A2.
  • On the input E1 z. B. the sensor S3 for the detection on a first page and on the input E2 of the sensor S4 of the second side of the folder 01 is given.
  • the pulse output A1 is set when input E1 (e.g. by signal m3) or input E2 (e.g. by signal m4) supplies a first signal.
  • the pulse output A1 is reset when the other of the two inputs E2; E1 (e.g. by signal m4 or m3) subsequently supplies a signal.
  • the direction output A2 supplies z. E.g. a signal if input E2 (e.g. by signal m4) was set before input E1 (e.g. by signal m3). Conversely, no signal is set.
  • Fig. 8 is an example of a signal sequence for the trigger module.
  • the pulse length of the pulse output A1 is preferably used as a measure for the detected product skew.
  • the direction output A2 supplies the information on which side the product 03 was first detected.
  • the pulse output A1 supplies a signal, this is read in via a time measurement function of the measuring probe function of the module 38 and ultimately evaluated in a logic.
  • the timing function delivers z. B. a unit of time in microseconds. This time is converted in the logic, for example, taking into account the time that a product 03 needs per mm of travel depending on the machine speed, into an indication in 1/100 millimeters.
  • a correspondingly large control signal is then sent to the actuator to be addressed, i.e. H. one of the drives 41 to 44, in particular one of the drives 41 or 42 of brushes 31; 32 issued.
  • At least two braking devices 24 are spaced apart from one another in the first transport direction T1 above the folding table 02 in the longitudinal folding apparatus 01; 36, namely a braking device 24 closer to the entry side and a braking device further away from the entry side; 36, are provided which, in a corresponding contact position, are able to decelerate a product 03 when it passes through, in particular via friction.
  • the respective braking device 24; 36 has at least one braking element 31; 32; 33; 34 or at least one group 26; 27; 28; 29 of deceleration elements 31; 32; 33; 34, which in an advantageous embodiment z. B. as brushes 31; 32; 33; 34 is or are formed.
  • the braking device 24 closer to the entry side is provided by at least one actuator 37, preferably by at least one z. B. designed as a pneumatic or hydraulic cylinder pressure medium-actuated actuator 37, at a distance from the folding table 02, z. B. by a maximum of 50 mm, changeable and / or optionally brought into or out of contact with the product flow passing through ( Figs. 11-15 ).
  • one or more of the products 03 provided for correcting the inclined position of the product 03 leaving the folding rollers 07 can be used Braking elements 31; 32 or at least one group 26, in particular closer to the entrance; 27 of deceleration elements 31; 32 apply for both purposes.
  • the braking device 24 closer to the entry side can consist of a total of an effective area of the folding table 02, e.g. B. be arranged so that it can be swiveled out by more than 200 mm away from the folding table 02 ( Fig. 12 and 13 ).
  • At least one of the at least two braking devices 24; 36, preferably both braking devices 24; 36, have at least two braking elements 31; 32; 33; 34, e.g. B. Brushes 31; 32; 33; 34 or "stop brushes” 33 further away from the entry side; 34 and "central brushes” 31; 32, or at least two groups 26; 27; 28; 29 of deceleration elements 31; 32; 33; 34, e.g. B. brush groups 26; 27; 28; 29 or brush systems 26; 27; 28; 29 on.
  • the braking elements 31; 32; 33; 34 or groups 26; 27; 28; 29 of deceleration elements 31; 32; 33; 34 preferably have actuators 41; 42; 43; 44 on.
  • two braking devices 24; 36 each with two groups 26; 27; 28; 29 of deceleration elements 31; 32; 33; 34 is provided, the four braking elements 31; 32; 33; 34 or four groups 26; 27; 28; 29 each independently of one another by one actuator 41; 42; 43; 44 can be changed in their distance from the folding table 02.
  • the first two groups 26; 27 show e.g. B each of four deceleration elements 31; 32, e.g. B.
  • each with a length L31 in the first transport direction T1 of z. B. at least 100 mm, preferably at least 150 mm, in particular approximately 200 mm, the two second groups 27; 28 z. B. three braking elements 33 each; 34, e.g. B. each with a length L33 in the first transport direction T1 of z. B. at least 50 mm, preferably at least 70 mm, in particular about 90 mm.
  • At least one of the entry-side closer and one of the entry-side further deceleration elements 31; 32; 33; 34 or groups 26; 27; 28; 29 can be changed independently of one another in terms of their distance from the folding table 02 or from the product 03 arranged thereon, in particular by means of an actuator 41; 42; 43; 44, formed.
  • the (respective) actuator 41; 42; 43; 44 is e.g. B. as a motor, in particular as a servomotor or stepper motor, which (r) preferably via a gear, z. B. a screw drive, or in some other way on the braking elements 31 to be set; 32; 33; 34 or groups 26; 27; 28; 29 for adjusting the distance to the folding table 02 acts.
  • two sensors S5 and S6 which detect the presence of the longitudinally folded product 03 after passing through the folding gap 06, in particular under the folding table 02, are provided, which or their measuring point S5; S6 viewed in a direction parallel to the longitudinal direction of a folding roller 07 and / and to the longitudinal direction of the folding gap 06 and / or to the longitudinal direction of the folding knife 04 by a distance a5,6, z. B. are spaced apart by at least 80 mm, advantageously by at least 120 mm, preferably by 120 mm to 180 mm ( Fig. 9 ).
  • the two sensors S5; S6 or measuring points S5; S6 are preferably at substantially the same vertical distance a5,6,02, e.g. B. 150 mm to 400 mm, in particular a maximum of 350 mm, to a surface of the folding table 02 that supports the product 03 before folding and / or in particular behind the folding rollers 07 when viewed in the product path.
  • One of the two sensors S6; S5 or measuring point (s) S6; S5 is e.g. B. in a to the longitudinal direction of a folding roller 07 or to the longitudinal direction of the folding gap 06 or to Longitudinal direction of the folding knife 04 parallel direction viewed at most by a distance a6.09 of z. B.
  • the two sensors S5; S6 is the same distance from the position of the product 03 being passed.
  • the exit of the folded product 03 under the folding table 02 is observed during production by the sensors S5 and S6 or at their measuring locations S5 and S6. If the folded product 03, e.g. B. with its leading edge, not guided out of the folding rollers 07 parallel to the folding roller axes, creases or tears on the outside of the product 03 can occur at high speeds.
  • a higher brush pressure, for example, of the front brush groups 28; 29 would cause the product end advancing with respect to the first transport direction T1 to be more strongly retained when passing through the folding rollers 07 and would therefore twist the folded product 03 in one direction and vice versa.
  • the processing of signals m5 and m6 of the sensors S5 and S6 takes place, for example, by appropriate means in a control or process module 39, briefly module 39, which z. B. can also be part of the control device 10 (as shown) or individually.
  • the signals m5 and m6 are the Sensors S5 and S6 out, these signals m5 and m6 are evaluated, and a result in the form of an actuating signal to one or more of the drives 41; 42; 43; 43, in particular drive 43 and / or 44, out.
  • the evaluation can preferably be implemented with the aid of a trigger module in the same way as described above in connection with m3 and m4.
  • a correspondingly large control signal is then sent to the actuator or actuators to be addressed ( e.g. as drives with assigned brushes), d. H. to one or more of the drives 41 to 44, here in particular the drives 43 and / or 44 (or generally the "drive" of a braking device 36, in particular the braking device 36 remote from the entry side).
  • two sensors S5 and S6 spaced transversely to the second transport direction T2 detect a time offset ⁇ t2 or a deviation ⁇ t2 from a target time offset (e.g. zero seconds) when the leading product edge.
  • a target time offset e.g. zero seconds
  • the product 03 can e.g. B. either on side I or on side II to stop 09, ie the braking effect of the brushes 31; 32; 33; 34 on the respective side I or II can be influenced.
  • Another advantageous development is the possibility of manual intervention by the operator in order to improve the spreading behavior of the product 03 on the folding table 02.
  • the central brushes 31; 32 or the two groups 26; 27 closer to the entry side closer to the folding table 02 or further away.
  • the permissible skewness of a product 03 on the folding table 02 can be fixed in an advantageous embodiment, e.g. B. to half a millimeter, but preferably changeable. Under the folding table 02 the permissible skew is z. B. 10 mm.
  • An embodiment of a device or a method with one or both of the above-mentioned inclination corrections, which is in connection with the above-mentioned device or method for controlling the folding time, is particularly advantageous.
  • the folding time ie the product distance from the stop 09, is advantageously monitored in parallel in every phase of operation, but at least during or directly following the above-mentioned corrective measures for inclined positions; (46) when first touching the folding process, in the manner described above.
  • one or more brushes 31; 32; 33; 34 press on the product 03, this may affect the position of the product 03 on the folding table 02 during rebating.
  • the product 03 remains behind and no longer comes far enough to the stop 09; (46).
  • the above-described folding time regulation acting on the folding blade drive takes effect and compensates for this lag of the product 03 behind its target position by setting the target relative position ⁇ R by applying a corresponding correction value k ⁇ ; (k ⁇ ) is corrected (see above).
  • the first point of contact of the folding knife 04 with the Product 03 by applying a correction value k ⁇ x; (k ⁇ x) in the direction of the stop 09; (46) relocated, ie the folding knife drive is delayed at least for a short time.
  • the first point of contact of the folding knife 04 with the product 03 is activated by applying a correction value k ⁇ x; (k ⁇ x) shifted in the direction of the entry side 18, ie the folding knife drive accelerated at least briefly.
  • the first point of contact of the folding knife 04 is z. B. depending on the working frequency (cycles per hour) of the folding knife 04.
  • a guide value for the safe first point of contact is z. B. at least 1 mm distance from the stop 09; (46) per 1,000 cycles / hour of work frequency.
  • the above Control of the brushes to correct the skew (on and / or under the folding table 02) is z. B. switched active from an operating frequency on the folding knife 04 of, for example, 20,000 cycles / hour. So that the brushes 31; 32; 33; 34 have immediate contact with the product 03, they can in an advantageous embodiment in an initial phase of the production to be carried out, z. B. at a speed V of z. B. ⁇ 1,500 cycles / hour, on both sides of the folding gap 06 (e.g. on side I and side II) dressed separately relative to the product 03 to be folded, d. H. can be set or zeroed in their distance.
  • the dressed value of each brush 31; 32; 33; 34 or brush group 26; 27; 28; 29 is retained until a production changeover that requires a new setting has been carried out on the fold or the operator manually resets or changes the dressing value.
  • two sensors S7 and S8 which detect the presence of the product 03 on the folding table 02 are provided, which or their measuring point S7; S8 viewed transversely to the first transport direction T1, from each other by a distance a7,8, z. B. by at least 100 mm, advantageously by at least 150 mm, preferably 150 mm to 250 mm, spaced, but are preferably arranged substantially symmetrically to the E plane.
  • the two sensors S7 and S8 or their measuring points S7; S8 are arranged in the same alignment running perpendicular to the first transport direction T1 and / or perpendicular to the plane E. They are, for example, at an essentially the same vertical distance a03, in particular 3 mm to 10 mm, from an on the folding table 02 between folding table 02 and sensor S7; S8 placed product 03.
  • One of the two sensors S7; S8, in particular sensor S8, can be omitted.
  • the two measuring locations S7; S8 for the dressing process against each other evaluating method an above mentioned measuring point also used elsewhere z. B.
  • the measuring point S1 of the above-mentioned sensor S1 arranged directly on the stop 09 can be used.
  • the sensor S8 can be omitted here.
  • the sensor S7 or its measurement location can be arranged in a position indicated by S7 ', which can have a substantially (up to ⁇ 3 mm) same distance a1 from the plane E as the sensor S1, but on the other side II of level E is arranged.
  • the position of the brushes 31; 32; (33; 34) or groups 26 and 27; (28; 29), in which this change becomes visible for the first time, is the dressing position referred to above. This process is carried out successively for both sides I; II carried out.
  • the determined dressing values are z. B. held in a memory device until they are possibly overwritten by new values.
  • the information and display of their location or position in the folder 01 is synonymous to be understood as the location of the measurement location S0 to S8 so that at their exit or at their exits between the presence and absence of the product 03 can be distinguished at the measuring location S0 to S8 observed by the relevant sensor S0 to S8.
  • the sensor S0 to S8 can thus also be arranged in the folder 01 in a position deviating from the illustration with the proviso that it monitors the relevant measuring location S0 to S8 or measuring point S0 to S8, identified above and in the figures by sensors S0 to S8.
  • the “location or position of the sensor” can thus be understood in general terms to be the “location or position of the measuring location or the measuring position” of the sensor S0 to S8 in question.
  • a sensor S0 to S4 shown arranged above the folding table 02 can also be arranged under or in the folding table 02 with appropriate precautions (such as an opening), provided that it monitors the relevant measuring location or measuring point.
  • the sensor or said sensors S0 to S8 is or are preferably optical sensors, e.g. B. light guide sensor (s), advantageously in the form of a reflection type, formed.
  • An embodiment (in particular for sensors S1; S2; S3; S4; S7; (S7 ') and S8) with a convergent light beam, e.g. B. formed on a point focusable or focused light point, the diameter of the light point at the focal point at most 0.7 mm, advantageously at most 0.5 mm, and / or the focal length less than 20 mm, advantageously at most 10 mm.
  • the sensors S5 and S6 can be of the same type with the same technical data, but also with a larger focal length, e.g. B. larger than 20 mm or possibly also be designed in the manner of a light barrier in deviation from the reflection type.
  • the sensors S0 to S8 mentioned do not have to be sensors providing spatial resolution, but preferably represent singular, spaced-apart measuring locations, since essentially only times of passage need to be determined and evaluated.
  • FIGs. 11-15 an advantageous embodiment of the longitudinal folding apparatus 01 is shown in different views.
  • the folding table 02 can have, in addition to stationary, ie fixed support areas 48, belts 49 which run parallel to the first transport direction T1 and transport the product 03. This can be upstream of a further, not shown transport device, for. B. a conveyor belt, through which the longitudinally folding products 03 are conveyed into the entrance area of the entry side 18 or up to the belts 49.
  • the folding knife drive is preferably mechanically independent and independently adjustable relative to the drive of the belts 49 and / or the upstream transport device.
  • the stop device 09 is provided, which is preferably designed for this purpose - e.g. B. at least in an active position - to limit the path of the product 03 along the transport direction T1.
  • the stop device 09 has an elongated stop element 46 or a plurality of stop elements 46 arranged side by side transversely to the first transport direction T1, the effective stop surface facing a product 03 formed by the one or more stops 46 essentially in a line perpendicular to the first transport direction T1 and / or to the longitudinal direction of the folding gap 06.
  • the one or more stop elements 46 is or are by at least one actuator 47, for. B. designed to be movable by a pneumatic or hydraulic drive 47.
  • the one or more stop elements 46 can optionally be switched on or off, preferably brought into or removed from the movement plane of the product 03 with their effective surface and / or in the movement plane of the product 03 with their stop surface, optionally at a distance from the entry side 18 changeable. In this case, several or several groups of stop elements 46 can be moved by several actuators 47.
  • the stop device 09 can then be switched off during the folding.

Landscapes

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

Claims (15)

  1. Procédé destiné à corriger une position d'inclinaison d'un produit (03) qui sort d'un interstice de rouleau de pliage de deux rouleaux de pliage (07) d'un appareil de pliage longitudinal (01), dans lequel
    - le produit (03) est acheminé sur une table de pliage (02) depuis un côté d'entrée (18) dans une première direction de transport (T1), de préférence parallèle au plan de la table de pliage, et est poussé jusque dans l'interstice de rouleau de pliage par une lame de pliage (04) déplaçable vers le haut et vers le bas par rapport à la table de pliage (02), quitte l'interstice de rouleau de pliage et est acheminé dans une seconde direction de transport (T2),
    - dans lequel au niveau de deux emplacements de mesure (S5 ; S6) espacés l'un de l'autre transversalement à la seconde direction de transport (T2) du produit (03) plié est respectivement saisi un moment de passage d'un bord de produit du produit (03) qui vient avant ou après,
    - à l'aide des moments de passage saisis au niveau des deux points de mesure (S5 ; S6), un écart Δt2 est, du point de vue de la technique de circuit et/ou de traitement des données, constaté et évalué entre un décalage temporel saisi lors du passage du bord de produit considéré au niveau des deux points de mesure (S5 ; S6) et un décalage temporel de consigne,
    - et en conséquence d'un écart Δt2 qui dépasse au moins d'une plage de tolérance, une action qui va à l'encontre de l'écart Δt2 est engagée par un processus de pilotage (39), laquelle action repose sur une rétention du produit (03) plus ou moins forte lors de la traversée des rouleaux de pliage (07) et/ou sur plus ou moins de friction entre des éléments de freinage (31 ; 32 ; 33 ; 34) avec le produit (03), caractérisé en ce que le moment de passage est saisi au niveau d'un bord de produit (3) d'un produit (3) plié qui sort de l'interstice de rouleau de pliage après traversée le long de l'interstice de pliage (06).
  2. Procédé selon la revendication 1, caractérisé en ce que l'action est engagée uniquement après constatation d'un écart Δt2 au niveau d'un nombre définissable de produits (03) qui se succèdent.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce qu'en tant qu'action un élément de freinage (31 ; 32 ; 33 ; 34) agencé par-dessus la table de pliage (02) ou un groupe (26 ; 27 ; 28 ; 29) d'éléments de freinage (31 ; 32 ; 33 ; 34) agencé par-dessus la table de pliage (02) est déplacé encore plus vers le produit (03) ou encore plus depuis le produit (03).
  4. Procédé selon la revendication 3, caractérisé en ce qu'en tant qu'action l'un de deux éléments de freinage (31 ; 32 ; 33 ; 34) espacés l'un de l'autre par-dessus la table de pliage (02) dans une première direction de transport (T1) ou l'un de deux groupes (26 ; 27 ; 28 ; 29) d'éléments de freinage (31 ; 32 ; 33 ; 34) espacés l'un de l'autre par-dessus la table de pliage (02) dans la direction de transport (T1) est déplacé encore plus vers la table de pliage (02) ou encore plus depuis la table de pliage (02).
  5. Procédé selon la revendication 4, caractérisé en ce que pendant ce temps l'autre des deux éléments de freinage (31 ; 32 ; 33 ; 34) ou l'autre groupe (26 ; 27 ; 28 ; 29) n'est pas modifié dans son espacement.
  6. Procédé selon la revendication 1, 3 ou 4, caractérisé en ce qu'en tant qu'action, une pression de brosse d'au moins un élément de freinage (31 ; 32 ; 33 ; 34) formé en tant que brosse (31 ; 32 ; 33 ; 34) et qui coopère dans un état actif avec les produits (03) sur la table de pliage (02) est modifiée.
  7. Procédé selon la revendication 1 ou 6, caractérisé en ce qu'en tant qu'action une variation d'un effet de freinage, en particulier d'une pression de brosse, se produit dans une région d'une moitié de produit qui vient avant des produits (03) qui se trouvent sur la table de pliage (02).
  8. Procédé selon la revendication 7, caractérisé en ce que par une augmentation de la pression de brosse d'une ou plusieurs brosses (33 ; 34) ou groupes de brosses (28 ; 29) plus éloignées du côté d'entrée est provoquée une rétention plus forte de l'extrémité de produit venant avant quant à la première direction de transport (T1) lors de la traversée des rouleaux de pliage (07), et ce faisant une rotation du produit (03) qui quitte l'interstice de rouleau de pliage.
  9. Procédé selon la revendication 1, caractérisé en ce que l'évaluation de signaux (m5 ; m6) récupérés au niveau des emplacements de mesure (S5 ; S6) se produit en utilisant un circuit de déclenchement de telle sorte que les courbes temporelles des signaux (m5 ; m6), en particulier de leurs fronts dans un contexte de statut qui change, soient évaluées dans le temps les unes par rapport aux autres, et à l'aide d'une logique se produit tant une mesure pour l'inclinaison de produit qu'une information quant à la direction de la position d'inclinaison.
  10. Procédé selon la revendication 1 ou 9, caractérisé en ce que via la différence temporelle de deux signaux (m5 ; m6) est établie une longueur d'impulsion en tant que mesure pour l'inclinaison de produit, et via l'ordre de deux signaux (m5 ; m6) est établie la direction de la position d'inclinaison.
  11. Appareil de pliage longitudinal (01), en particulier pour la mise en œuvre du procédé selon une ou plusieurs des revendications 1 à 10 avec une table de pliage (02) vers laquelle peut être amené depuis un côté d'entrée (18) dans une première direction de transport (T1), de préférence parallèle au plan de la table de pliage, un produit (03) à plier, avec une lame de pliage (04) déplaçable vers le haut et vers le bas par rapport à la table de pliage (02) et un interstice de rouleau de pliage agencé en-dessous de la table de pliage (02), caractérisé en ce que, sur un chemin de transport agencé en aval de l'interstice de rouleau de pliage, deux capteurs (S5 ; S6) qui reconnaissent la présence d'un produit (03) plié longitudinalement sont prévus espacés l'un de l'autre transversalement à la seconde direction de transport (T2) du produit (03) à faire passer, un processus de pilotage (39) est prévu par lequel les signaux (m5 ; m6) de ces capteurs (S5 ; S6) peuvent être évalués en fonction d'une position d'inclinaison de produit, et en ce qu'au moins un élément de réglage réglable à la suite d'un signal de sortie du processus de pilotage (39) est prévu pour influer sur une position d'inclinaison de produit, dans lequel en tant qu'élément de réglage est prévu au moins un élément de freinage (31 ; 32 ; 33 ; 34) variable dans son action de freinage et actionnable par un actionneur (41 ; 42 ; 43 ; 44).
  12. Appareil de pliage longitudinal selon la revendication 11, caractérisé en ce que le au moins un élément de freinage (31 ; 32 ; 33 ; 34) est agencé par-dessus la table de pliage (02) et agencé en coopération avec le produit (03).
  13. Appareil de pliage longitudinal selon la revendication 12, caractérisé en ce qu'un élément de freinage (31 ; 32 ; 33 ; 34) actionnable est agencé de telle sorte que, dans un état actif lors de l'opération de pliage dans une région d'une moitié de produit qui vient avant, il soit agencé en coopération avec le produit (03) qui se trouve sur la table de pliage (02).
  14. Appareil de pliage longitudinal selon la revendication 12 ou 13, caractérisé en ce qu'un élément de freinage (31 ; 32 ; 33 ; 34) actionnable est agencé de telle sorte que, dans un état actif lors de l'opération de pliage dans une région d'une moitié de produit qui vient après, il soit agencé en coopération avec le produit (03) qui se trouve sur la table de pliage (02).
  15. Appareil de pliage longitudinal selon la revendication 14, caractérisé en ce qu'au moins un élément de freinage (31 ; 32 ; 33 ; 34) actionnable et plus éloigné du côté d'entrée est agencé dans la région d'une moitié de produit qui vient avant, et un élément de freinage (31 ; 32 ; 33 ; 34) actionnable et plus rapproché du côté d'entrée est agencé dans la région d'une moitié de produit qui vient après, dans lequel les deux éléments de freinage (31 ; 32 ; 33 ; 34) sont conçus actionnables indépendamment l'un de l'autre.
EP09801215.6A 2009-03-27 2009-12-23 Procédé destiné à la correction d'une position inclinée d'un produit sortant d'un espace séparant deux cylindres de pliage d'une plieuse longitudinale et plieuse longitudinale Active EP2411313B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102009001956 2009-03-27
DE102009003240.1A DE102009003240B4 (de) 2009-03-27 2009-05-19 Verfahren zur Korrektur einer Schräglage eines aus einem Falzwalzenspalt eines Längsfalzapparates austretenden Produktes und Längsfalzapparat
PCT/EP2009/067830 WO2010108561A1 (fr) 2009-03-27 2009-12-23 Procédé destiné à la correction d'une position inclinée d'un produit sortant d'un espace séparant deux cylindres de pliage d'une plieuse longitudinale et plieuse longitudinale

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EP2411313A1 EP2411313A1 (fr) 2012-02-01
EP2411313B1 true EP2411313B1 (fr) 2021-01-13

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EP09801215.6A Active EP2411313B1 (fr) 2009-03-27 2009-12-23 Procédé destiné à la correction d'une position inclinée d'un produit sortant d'un espace séparant deux cylindres de pliage d'une plieuse longitudinale et plieuse longitudinale
EP09801213.1A Active EP2411309B1 (fr) 2009-03-27 2009-12-23 Procédé pour faire fonctionner une plieuse longitudinale présentant une lame de pliage et une table de pliage et plieuse longitudinale
EP09801214.9A Active EP2411312B1 (fr) 2009-03-27 2009-12-23 Procédé destiné à la correction d'une position inclinée d'un produit à plier sur une table de pliage d'une plieuse longitudinale et plieuse longitudinale

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EP09801213.1A Active EP2411309B1 (fr) 2009-03-27 2009-12-23 Procédé pour faire fonctionner une plieuse longitudinale présentant une lame de pliage et une table de pliage et plieuse longitudinale
EP09801214.9A Active EP2411312B1 (fr) 2009-03-27 2009-12-23 Procédé destiné à la correction d'une position inclinée d'un produit à plier sur une table de pliage d'une plieuse longitudinale et plieuse longitudinale

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US (2) US8323162B2 (fr)
EP (3) EP2411313B1 (fr)
CN (3) CN102365224B (fr)
DE (3) DE102009003240B4 (fr)
WO (3) WO2010108561A1 (fr)

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CN102365220A (zh) 2012-02-29
CN102365224B (zh) 2014-06-25
DE102009003235B3 (de) 2010-07-08
DE102009003240B4 (de) 2021-01-28
EP2411313A1 (fr) 2012-02-01
US8323162B2 (en) 2012-12-04
WO2010108560A1 (fr) 2010-09-30
EP2411312A1 (fr) 2012-02-01
CN102365220B (zh) 2015-06-03
CN102365223B (zh) 2015-07-15
CN102365223A (zh) 2012-02-29
US8251882B2 (en) 2012-08-28
DE102009003237A1 (de) 2010-10-07
DE102009003240A1 (de) 2010-10-07
EP2411309B1 (fr) 2015-11-11
EP2411309A1 (fr) 2012-02-01
WO2010108559A1 (fr) 2010-09-30
EP2411312B1 (fr) 2018-08-22
US20120035032A1 (en) 2012-02-09
WO2010108561A1 (fr) 2010-09-30
CN102365224A (zh) 2012-02-29
US20120035040A1 (en) 2012-02-09

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