EP0131310B1 - Blade folding machine - Google Patents

Blade folding machine Download PDF

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Publication number
EP0131310B1
EP0131310B1 EP84108113A EP84108113A EP0131310B1 EP 0131310 B1 EP0131310 B1 EP 0131310B1 EP 84108113 A EP84108113 A EP 84108113A EP 84108113 A EP84108113 A EP 84108113A EP 0131310 B1 EP0131310 B1 EP 0131310B1
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EP
European Patent Office
Prior art keywords
sheet
folding machine
blade
machine according
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84108113A
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German (de)
French (fr)
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EP0131310A1 (en
Inventor
Gerhard Will
Manfred Dutzi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stahl GmbH and Co Maschinenfabrik
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Stahl GmbH and Co Maschinenfabrik
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Publication date
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Publication of EP0131310A1 publication Critical patent/EP0131310A1/en
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    • 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
    • B65H7/00—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors

Definitions

  • the invention relates to a sword folding machine with at least one folding roller, a folding sword interacting with it, conveyor belts running parallel to the folding sword, a stop arranged transversely to the conveyor belts, a sheet detector which registers the passage of a sheet to be folded on the conveyor belts and its distance from the stop is dimensioned such that a sheet ready for folding at the stop is no longer in the detection area of the sheet detector, a folding sword control evaluating the signal of the sheet detector, which activates the folding sword only after a sheet brought up to the stop after detection by the sheet detector has left its detection area , and with a drive control for the drive of the conveyor belts, which stops this drive when an approached sheet registered by the sheet detector begins the detection area of the sheet detector after the sheet detection begins has not left the measuring span again.
  • the sheet detector is designed as a light barrier with a light transmitter and a photo cell.
  • the light barrier is arranged in relation to the stop running transversely to the conveyor belts so that even the longest sheets to be folded which are to be folded on this machine have released the light barrier again after they have come to rest at the stop and for folding are ready.
  • a path pulse generator coupled to the conveyor belts emits a pulse signal which is intended to represent the speed of the movement of the sheets on the conveyor belts.
  • the pulse signal emitted by the displacement pulse generator is applied to the control input of an adjustable counter. Each counting process of the counter is triggered by the light barrier when it registers the passage of an arc.
  • the sword drive is released. If, on the other hand, the preset counter reading is reached before the end of the sheet has passed the light barrier, not only the sword drive is stopped, but also the drive of the conveyor belts. In this way, on the one hand it is avoided that an incorrectly aligned sheet is knocked and folded in the folding gap of the folding roller by the folding sword, and on the other hand it is avoided that in such a case further sheets are brought up to the stop.
  • the known sword folding machine must be set to the format of the respective sheet to be folded at the beginning of a folding work by entering a counter reading in the presettable counter which corresponds to the relevant sheet length.
  • This setting which is essential for the functioning of the folding machine, is time-consuming, especially when it is not uncommon for inches to centimeters to be converted.
  • a sheet that is to be folded and is to be folded requires a certain calming time before it can be folded into the folding gap.
  • the dimensioning of this calming time also causes difficulties in the known folding machine, since the required calming time depends on the working speed of the folding machine, which, however, can only be taken into account when the counter is preset if it is constant. However, this condition is not met with clock-controlled folding machines.
  • the known folding machine has the disadvantage that it can only be used on machines in which the working speed is always the same as that of a preceding folding unit. With loosely adjustable folding machines, however, this condition is not met. Rather, it can happen that a sheet is still held by the folding rollers of the preceding folding machine and therefore the e.g. exhibits slower speed of the preceding folding machine. If such a sheet is taken over by the known sword folding machine, its light barrier would register a sheet that appears to be longer than in reality. The predetermined count would be reached before the sheet end is registered. In such a case, the folding machine would be stopped immediately. Under the circumstances described, the known sword folding machine would be inoperable.
  • the invention has for its object to provide a sword folding machine of the type specified in such a way that it is free from the described shortcomings of the conventional folding machines and in particular enables easy adjustment to the sheet format, even without the drive in the event of a malfunctioning arrangement being operational and is functional regardless of the speed of a previous folding machine.
  • the sheet detector is at a distance from the stop which is adjustable according to the sheet length
  • the drive control for driving the conveyor belts is independent of the folding blade control and the measuring span relevant for stopping the drive of the conveyor belts is a predetermined period of time.
  • the adjustment to the sheet format in question can be carried out only by setting the sheet detector, which is generally designed as a light barrier, in such a way that it has a predetermined distance from the rear edge of a sheet to be folded at the stop. This process is simple to use and does not require any conversion or special knowledge.
  • the drive control which stops the drive of the conveyor belts of the folding machine when a fault is detected, is also independent of the sword control, so that retrofitting of existing machines is easily possible and the drive control can be easily adapted to the respective needs and conditions without changing the sword control can.
  • a major advantage of the folding machine according to the invention is that the period of time until the drive is switched off can be generously dimensioned in the event of a fault, e.g. B. so large that several sheets are brought up to the stop after a fault has been registered. Such a fault can still be easily remedied. Furthermore, the period of time mentioned can be dimensioned such that the takeover of a sheet to be folded from an upstream folding unit which operates at a lower speed and still holds the sheet does not result in the drive of this downstream folding machine being switched off.
  • the sword folding machine according to the invention can thus be operated in virtually any combination with other folding machines.
  • a speed-dependent signal then automatically controls the length of the time span.
  • the time period is determined by the draw-in length, which must be set anyway in the case of clock-controlled machines.
  • a potentiometer is used to adjust the feed length, from whose grinder a signal is picked up.
  • This signal can, if necessary after being linked to the previously described speed-dependent signal, be applied to the control input of a timer, in order in this way to set the predetermined period of time after which the drive of the conveyor belts is to be stopped if the sheet within this period of time detects the detection area the sheet detector has not left again, e.g. is folded or is not parallel to the stop.
  • the folding mechanism of a sword folding machine shown schematically in FIG. 1 has four parallel conveyor belts 10, 12, 14, 16 which are mounted on two mutually parallel rollers 18, 20 arranged at a distance from one another and are driven by at least one of them.
  • the roller 20 is only hinted at in the drawing.
  • the sheets to be folded are brought via the conveyor belts 10, 12, 14, 16 in the direction of an arrow F to a stop 22 which is arranged transversely to the direction of transport F.
  • a folding sword 24, which is arranged parallel to the conveyor belts and between the conveyor belts 12, 14, cooperates with the folding roller, which is arranged under the conveyor belts 10, 12, 14, 16 and is not shown in the drawing.
  • This folding sword 24 can be moved up and down. Its up and down movement is controlled by a folding sword control, not shown.
  • a sheet detector 26 which has the task of registering the passage of a sheet, is adjustably arranged on a rail 28 parallel to the conveyor belts in such a way that its distance from the stop 22 can be adjusted.
  • a locking screw 30 is used on the rail 28 to determine the arc detector 26, which is preferably designed as a light barrier.
  • the first embodiment of a drive control for controlling the drive of the conveyor belts 10, 12, 14, 16 shown in the block diagram of FIG. 2 contains a timer 32 in the form of a monostable multivibrator, the proper time of which can be set at a control input 34.
  • the timer 32 also has a trigger input 36, which is connected to the output of the arc detector 26 via an electrical line.
  • the output 38 of the timer 32 controls an inverting input of an AND circuit 40, the second, non-inverting input of which is connected to the output of the arc detector 26.
  • the output of the AND circuit 40 drives the input of an amplifier 42, the output of which is connected to an arrangement (not shown) which stops the drive of the conveyor belts 10, 12, 14, 16 when the amplifier 42 delivers an output signal.
  • the control signal applied to the control input 34 is the output signal of a differential amplifier 44, the inverting input of which is connected to the output of a tachometer generator 46.
  • the tachometer generator 46 generates a signal which is proportional to the drive speed of the conveyor belts 10, 12, 14, 16.
  • the non-inverting input of the differential amplifier 44 is connected to the output of a control unit 48, which contains a potentiometer, at the wiper of which a signal is tapped whose level corresponds to the set feed length of the folding machine.
  • the control unit 48 is present in particular on clock-controlled folding machines and is used to adjust the feed length in accordance with the sheets to be folded. A signal thus arrives at the differential amplifier 44, which is available anyway in the case of folding machines of the type in question and is used for a further purpose in the folding machine according to the invention, namely the setting of the natural time of the timer 32.
  • the differential amplifier 44 forms the difference between the signal representing the set feed length from the setting unit 48 and the speed-dependent signal from the tachometer generator 46.
  • the difference signal which is applied to the input 34 of the timer 32, determines the period of time after which the AND Circuit 40 of the amplifier 42 is activated to stop the drive of the conveyor belts 10, 12, 14, 16 if, at the end of this period, the signal emitted by the sheet detector 26 does not indicate that the trailing edge of the sheet has passed the sheet detector.
  • the amplifier 42 therefore only delivers a switch-off signal to the drive of the conveyor belts if, after the detection of the leading edge of a sheet by the sheet detector 26, a predetermined period of time has elapsed without the sheet detector 26 having detected the trailing edge of this sheet.
  • This time period depends on the one hand on the feed length set and on the other on the working speed of the folding machine. The longer the feed length, the longer the time span. The higher the working speed of the folding machine, the shorter the time span. In this way, an automatic setting of the time period in question depending on the respective feed length and working speed of the folding machine is achieved, which ensures that the machine is switched off sufficiently quickly in the event of a fault, so that a fault can still be easily remedied.
  • the duration of the time period is preferably such that the machine is switched off when, after the arrival of a folded or slanting sheet, about two more sheets have been brought up to the stop 22. With a significantly larger number of gusts, the elimination of the disturbance is already more difficult.
  • the setting unit 48, the differential amplifier 44 and the amplifier 42 correspond to the embodiment according to FIG. 2 and are therefore not explained further.
  • the amplifier 42 receives its drive signal from the output of a threshold value detector 50, the input 52 of which defines the threshold value is connected to the output of the differential amplifier 44 and the signal input 54 of which is connected to the output of an integrator 56, the input of which With the output of the arc detector 26 is connected.
  • the inverting input of the differential amplifier 44 receives the output signal of a frequency / voltage converter 58, the signal input 60 of which is connected to the output of a clock generator 62.
  • the clock generator 62 is present in any case in clock-controlled folding machines and determines their operating speed.
  • the output voltage output by the frequency / voltage converter 58 is a DC voltage, the level of which is therefore proportional to the operating speed of the folding machine.
  • the embodiment shown in Fig. 3 also includes a timer; this timer is formed by the threshold detector 50, which outputs an output signal to the amplifier 42 as soon as the signal output by the integrator 56 reaches the level of the output signal of the differential amplifier 44.
  • the output signal of the integrator 56 is the time integral of its input signal emitted by the arc detector 26 and therefore has a level which increases over time in accordance with the characteristic curve of the integrator 56.
  • FIG. 3 is particularly advantageous in the case of clock-controlled folding machines, since an additional tachometer generator (46 in FIG. 2) can be omitted.
  • FIG. 3 instead of the tachometer generator 46, the arrangement shown in FIG. 3 consisting of clock signal generator 62 and frequency / voltage converter 58 can be used, just as in the embodiment according to FIG. 3 a timer 32 instead of the integrator 56 as in FIG the embodiment of FIG. 2 can be used.

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

Description

Die Erfindung betrifft eine Schwertfalzmaschine mit wenigstens einer Falzwalze, einem mit dieser zusammenwirkenden Falzschwert, parallel zum Falzschwert verlaufenden Transportbändern, einem quer zu den Transportbändern angeordneten Anschlag, einem Bogendetektor, der den Durchgang eines zu falzenden Bogens auf den Transportbändern registriert und dessen Abstand von dem Anschlag so bemessen ist, daß ein am Anschlag zum Falzen bereitliegender Bogen nicht mehr im Erfassungsbereich des Bogendetektors liegt, einer das Signal des Bogendetektors auswertenden Falzschwertsteuerung, die das Falzschwert nur aktiviert, nachdem ein an den Anschlag herangeführter Bogen nach Erfassung durch den Bogendetektor dessen Erfassungsbereich verlassen hat, und mit einer Antriebssteuerung für den Antrieb der Transportbänder, welche diesen Antrieb stillsetzt, wenn ein herangeführter, durch den Bogendetektor registrierter Bogen den Erfassungsbereich des Bogendetektors nach Ablauf einer mit der Bogenerfassung beginnenden Meßspanne nicht wieder verlassen hat.The invention relates to a sword folding machine with at least one folding roller, a folding sword interacting with it, conveyor belts running parallel to the folding sword, a stop arranged transversely to the conveyor belts, a sheet detector which registers the passage of a sheet to be folded on the conveyor belts and its distance from the stop is dimensioned such that a sheet ready for folding at the stop is no longer in the detection area of the sheet detector, a folding sword control evaluating the signal of the sheet detector, which activates the folding sword only after a sheet brought up to the stop after detection by the sheet detector has left its detection area , and with a drive control for the drive of the conveyor belts, which stops this drive when an approached sheet registered by the sheet detector begins the detection area of the sheet detector after the sheet detection begins has not left the measuring span again.

Eine derartige Schwertfalzmaschine ist bereits aus der DE-A-30 22 607 bekannt. Bei dieser bekannten Schwertfalzmaschine ist der Bogendetektor als Lichtschranke mit einem Lichtsender und einer Photozelle ausgebildet. Die Lichtschranke ist in bezug auf den quer zu den Transportbändern verlaufenden Anschlag so angeordnet, daß auch die längsten zu falzenden Bogen, die auf dieser Maschine gefalzt werden sollen, die Lichtschranke wieder freigegeben haben, nachdem sie an dem Anschlag zur Ruhe gekommen sind und zum Falzen bereitliegen. Ein mit den Transportbändern gekoppelter Weg-Impulsgeber gibt ein Impulssignal ab, das die Geschwindigkeit der Bewegung der Bogen auf den Transportbändern darstellen soll. Das von dem Weg-Impulsgeber abgegebene Impulssignal ist an den Steuereingang eines einstellbaren Zählers angelegt. Jeder Zählvorgang des Zählers wird durch die Lichtschranke ausge-löst, wenn diese den Durchgang eines Bogens registriert. Wenn der Zähler den voreingestellten Zählerstand erreicht hat und das Ende des Bogens die Lichtschranke passiert hat, wird der Schwertantrieb freigegeben. Wenn hingegen der voreingestellte Zählerstand erreicht ist, bevor das Ende des Bogens die Lichtschranke passiert hat, wird nicht nur der Schwertantrieb stillgesetzt, sondern auch der Antrieb der Transportbänder. Auf diese Weise wird zum einen vermieden, daß ein nicht korrekt ausgerichter Bogen durch das Falzschwert in den Falzspalt der Falzwalze eingeschlagen und verfalzt wird, und zum anderen wird vermieden, daß in einem solchen Fall weitere Bogen an den Anschlag herangeführt werden.Such a sword folding machine is already known from DE-A-30 22 607. In this known sword folding machine, the sheet detector is designed as a light barrier with a light transmitter and a photo cell. The light barrier is arranged in relation to the stop running transversely to the conveyor belts so that even the longest sheets to be folded which are to be folded on this machine have released the light barrier again after they have come to rest at the stop and for folding are ready. A path pulse generator coupled to the conveyor belts emits a pulse signal which is intended to represent the speed of the movement of the sheets on the conveyor belts. The pulse signal emitted by the displacement pulse generator is applied to the control input of an adjustable counter. Each counting process of the counter is triggered by the light barrier when it registers the passage of an arc. When the counter has reached the preset counter reading and the end of the curve has passed the light barrier, the sword drive is released. If, on the other hand, the preset counter reading is reached before the end of the sheet has passed the light barrier, not only the sword drive is stopped, but also the drive of the conveyor belts. In this way, on the one hand it is avoided that an incorrectly aligned sheet is knocked and folded in the folding gap of the folding roller by the folding sword, and on the other hand it is avoided that in such a case further sheets are brought up to the stop.

Bei der bekannten Schwertfalzmaschine ist die Anordnung, durch welche der Antrieb der Transportbänder stillgesetzt. wird, wenn ein verfalzter Bogen ankommt, Bestandteil der Falzschwertsteuerung. Es bereitet daher Schwierigkeiten, vorhandene Falzmaschinen nachträglich mit einer solchen Anordnung auszurüsten. Der Betrieb der Falzmaschine ist auch nicht möglich, wenn diese Anordnung entfernt wird.In the known sword folding machine, the arrangement by which the drive of the conveyor belts is stopped. If a folded sheet arrives, it becomes part of the folding sword control. It is therefore difficult to retrofit existing folding machines with such an arrangement. The operation of the folding machine is also not possible if this arrangement is removed.

Ferner muß die bekannte Schwertfalzmaschine zu Beginn einer Falzarbeit auf das Format der jeweiligen zu falzenden Bogen eingestellt werden, indem in den voreinstellbaren Zähler ein Zählerstand eingegeben wird, welcher der betreffenden Bogenlänge entspricht. Diese Einstellung, die für das Funktionieren der Falzmaschine von wesentlicher Bedeutung ist, ist zeitaufwendig, besonders wenn in nicht seltenen Fällen von Zoll in Zentimeter umgerechnet werden muß.Furthermore, the known sword folding machine must be set to the format of the respective sheet to be folded at the beginning of a folding work by entering a counter reading in the presettable counter which corresponds to the relevant sheet length. This setting, which is essential for the functioning of the folding machine, is time-consuming, especially when it is not uncommon for inches to centimeters to be converted.

Ein am Anschlag angelangender, zu falzender Bogen benötigt eine gewisse Beruhigungszeit, bevor er in den Falzspalt eingeschlagen werden kann. Die Bemessung dieser Beruhigungszeit verursacht bei der bekannten Falzmaschine ebenfalls Schwierigkeiten, da die erforderliche Beruhigungszeit von der Arbeitsgeschwindigkeit der Falzmaschine abhängt, die jedoch bei der Voreinstellung des Zählers nur berücksichtigt werden kann, wenn sie konstant ist. Diese Bedingung ist aber bei taktgesteuerten Falzmaschinen nicht erfüllt.A sheet that is to be folded and is to be folded requires a certain calming time before it can be folded into the folding gap. The dimensioning of this calming time also causes difficulties in the known folding machine, since the required calming time depends on the working speed of the folding machine, which, however, can only be taken into account when the counter is preset if it is constant. However, this condition is not met with clock-controlled folding machines.

Schließlich ist bei der bekannten Falzmaschine nachteilig, daß sie nur an Maschinen einsetzbar ist, bei denen die Arbeitsgeschwindigkeit immer gleich derjenigen eines vorangeschalteten Falzwerks ist. Bei lose anstellbaren Falzmaschinen ist diese Bedingung aber nicht erfüllt. Vielmehr kann es hier vorkommen, daß ein Bogen noch von den Falzwalzen der vorangehenden Falzmaschine gehalten wird und daher die z.B. langsamere Geschwindigkeit der vorausgehenden Falzmaschine aufweist. Wenn ein solcher Bogen von der bekannten Schwertfalzmaschine übernommen wird, so würde deren Lichtschranke einen Bogen registrieren, der scheinbar länger ist als in Wirklichkeit. Der vorbestimmte Zählerstand würde erreicht werden, bevor das Bogenende registriert wird. Die Falzmaschine würde in einem solchen Fall sofort stillgesetzt werden. Unter den beschriebenen Umständen wäre also die bekannte Schwertfalzmaschine funktionsuntüchtig.Finally, the known folding machine has the disadvantage that it can only be used on machines in which the working speed is always the same as that of a preceding folding unit. With loosely adjustable folding machines, however, this condition is not met. Rather, it can happen that a sheet is still held by the folding rollers of the preceding folding machine and therefore the e.g. exhibits slower speed of the preceding folding machine. If such a sheet is taken over by the known sword folding machine, its light barrier would register a sheet that appears to be longer than in reality. The predetermined count would be reached before the sheet end is registered. In such a case, the folding machine would be stopped immediately. Under the circumstances described, the known sword folding machine would be inoperable.

Der Erfindung liegt die Aufgabe zugrunde, eine Schwertfalzmaschine der eingangs angegebenen Art so auszubilden, daß sie von den beschriebenen Mängeln der herkömmlichen Falzmaschinen frei ist und insbesondere eine leichte Einstellung auf das Bogenformat ermöglicht, auch ohne die der Antrieb bei einer Störung stillsetzende Anordnung betriebsfähig ist und unabhängig von der Geschwindigkeit einer vorausgehenden Falzmaschine funktionstüchtig ist.The invention has for its object to provide a sword folding machine of the type specified in such a way that it is free from the described shortcomings of the conventional folding machines and in particular enables easy adjustment to the sheet format, even without the drive in the event of a malfunctioning arrangement being operational and is functional regardless of the speed of a previous folding machine.

Diese Aufgabe wird bei der eingangs beschriebenen Schwertfatzmaschine erfindungsgemäß dadurch gelöst, daß der Bogendetektor einen entsprechend der Bogenlänge einstellbaren Abstand von dem Anschlag aufweist, die Antriebssteuerung für den Antrieb der Transportbänder unabhängig von der Falzschwertsteuerung ist und die für das Stillsetzen des Antriebs der Transportbänder maßgebliche Meßspanne eine vorbestimmte Zeitspanne ist.This object is achieved according to the invention in the sword scraper machine described at the outset in that the sheet detector is at a distance from the stop which is adjustable according to the sheet length, the drive control for driving the conveyor belts is independent of the folding blade control and the measuring span relevant for stopping the drive of the conveyor belts is a predetermined period of time.

Bei der erfindungsgemäßen Schwertfalzmaschine kann die Einstellung auf das betreffende Bogenformat allein dadurch erfolgen, daß der Bogendetektor, der im allgemeinen als Lichtschranke ausgebildet ist, so eingestellt wird, daß er einen vorbestimmten Abstand von der Hinterkante eines am Anschlagruhenden zu falzenden Bogens hat. Dieser Vorgang ist eine einfache Handhabung, die keinerlei Umrechnung und besondere Kenntnisse erfordert.In the sword folding machine according to the invention, the adjustment to the sheet format in question can be carried out only by setting the sheet detector, which is generally designed as a light barrier, in such a way that it has a predetermined distance from the rear edge of a sheet to be folded at the stop. This process is simple to use and does not require any conversion or special knowledge.

Die Anstriebssteuerung, welche den Antrieb der Transportbänder der Falzmaschine stillsetzt, wenn eine Störung festgestellt wird, ist ferner von der Schwertsteuerung unabhängig, so daß eine Nachrüstung vorhandener Maschinen leicht möglich ist und die Antriebssteuerung ohne Änderung der Schwertsteuerung leicht an die jeweiligen Bedürfnisse und Verhältnisse angepaßt werden kann.The drive control, which stops the drive of the conveyor belts of the folding machine when a fault is detected, is also independent of the sword control, so that retrofitting of existing machines is easily possible and the drive control can be easily adapted to the respective needs and conditions without changing the sword control can.

Ein wesentlicher Vorteil der erfindungsgemäßen Falzmaschine besteht darin, daß die Zeitspanne bis zum Abschalten des Antriebs im Falle einer Störung großzügig bemessen werden kann, z. B. so groß, daß noch mehrere Bogen bis an den Anschlag herangeführt werden, nachdem eine Störung registriert wurde. Eine solche Störung läßt sich noch leicht beheben. Ferner kann die genannte Zeitspanne so bemessen werden, daß die Übernahme eines zu falzenden Bogens von einem vorgeschalteten Falzwerk, das mit niedrigerer Geschwindigkeit arbeitet und den Bogen noch festhält, nicht zum Abschalten des Antriebs dieser nachgeschalteten Falzmaschine führt. Somit kann die erfindungsgemäße Schwertfalzmaschine in praktisch beliebiger Kombination mit anderen Falzmaschinen betrieben werden.A major advantage of the folding machine according to the invention is that the period of time until the drive is switched off can be generously dimensioned in the event of a fault, e.g. B. so large that several sheets are brought up to the stop after a fault has been registered. Such a fault can still be easily remedied. Furthermore, the period of time mentioned can be dimensioned such that the takeover of a sheet to be folded from an upstream folding unit which operates at a lower speed and still holds the sheet does not result in the drive of this downstream folding machine being switched off. The sword folding machine according to the invention can thus be operated in virtually any combination with other folding machines.

In vielen Fällen ist es zweckmäßig, die genannte Zeitspanne variabel auszulegen, so daß sie insbesondere der Arbeitsgeschwindigkeit der Maschine angepaßt wird. Ein geschwindigkeitsabhängiges Signal steuert dann automatisch die Länge der Zeitspanne.In many cases, it is expedient to design the specified time period variably, so that it is particularly adapted to the working speed of the machine. A speed-dependent signal then automatically controls the length of the time span.

Gemäß einer weiteren vorteilhaften Ausbildung der Erfindung wird die Zeitspanne durch die Einzugslänge bestimmt, die bei taktgesteuerten Maschinen ohnehin eingestellt werden muß. Zur Einstellung der Einzugslänge dient bei solchen Maschinen ein Potentiometer, an dessen Schleifer ein Signal abgegriffen wird. Dieses Signal kann, gegebenenfalls nach Verknüpfung mit dem zuvor beschriebenen geschwindigkeitsabhängigen Signal, an den Steuereingang eines Zeitgebers angelegt werden, um auf diese Weise die vorbestimmte Zeitspanne einzustellen, nach Ablauf welcher der Antrieb der Transportbänder stillgesetzt werden soll, wenn der Bogen innerhalb dieser Zeitspanne den Erfassungsbereich des Bogendetektors nicht wieder verlassen hat, also z.B. verfalzt ist oder nicht parallel am Anschlag liegt.According to a further advantageous embodiment of the invention, the time period is determined by the draw-in length, which must be set anyway in the case of clock-controlled machines. In such machines, a potentiometer is used to adjust the feed length, from whose grinder a signal is picked up. This signal can, if necessary after being linked to the previously described speed-dependent signal, be applied to the control input of a timer, in order in this way to set the predetermined period of time after which the drive of the conveyor belts is to be stopped if the sheet within this period of time detects the detection area the sheet detector has not left again, e.g. is folded or is not parallel to the stop.

Vorteilhafte Weiterbildungen der Erfindung sind insbesondere in den Unteransprüchen angegeben.Advantageous developments of the invention are specified in particular in the subclaims.

Weitere Vorteile der Erfindung ergeben sich aus der folgenden Beschreibung von Ausführungsbeispielen und aus der Zeichnung, auf die Bezug genommen wird. In der Zeichnung zeigen:

  • Fig. 1 eine schematische Darstellung der wesentlichen Elemente eines Falzwerks und der Relativanordnung eines Bogendetektors zu dem quer zu den Transportbändern verlaufenden Anschlag;
  • Fig. 2 ein Blockschaltbild einer ersten Ausführungsform einer Antriebssteuerung für den Antrieb der Transportbänder; und
  • Fig. 3 ein Blockschaltbild einer weiteren Ausführungsform der Antriebssteuerung.
Further advantages of the invention result from the following description of exemplary embodiments and from the drawing, to which reference is made. The drawing shows:
  • Figure 1 is a schematic representation of the essential elements of a folding unit and the relative arrangement of a sheet detector to the stop extending transversely to the conveyor belts.
  • 2 shows a block diagram of a first embodiment of a drive control for driving the conveyor belts; and
  • Fig. 3 is a block diagram of another embodiment of the drive control.

Das in Fig. 1 schematisch gezeigte Falzwerk einer Schwertfalzmaschine weist vier parallele Transportbänder 10,12,14,16 auf, die auf zwei zueinander parallele, im Abstand voneinander angeordnete Walzen 18, 20 aufgezogen sind und von wenigstens einer derselben angetrieben werden. Die Walze 20 ist in der Zeichnung nur angedeutet. Die zu falzenden Bogen werden über die Transportbänder 10,12,14,16 in Richtung eines Pfeiles F an einen Anschlag 22 herangeführt, der quer zur Transportrichtung F angeordnet ist. Mit der unter den Transportriemen 10, 12, 14,16 angeordneten, in der Zeichnung nicht dargestellten Falzwalze arbeitet ein Falzschwert 24 zusammen, das parallel zu den Transportbändern und zwischen den Transportbändern 12,14 angeordnet ist. Dieses Falzschwert 24 ist aufund abbewegbar. Seine Auf- und Abbewegung wird durch eine nicht dargestellte Falzschwertsteuerung gesteuert.The folding mechanism of a sword folding machine shown schematically in FIG. 1 has four parallel conveyor belts 10, 12, 14, 16 which are mounted on two mutually parallel rollers 18, 20 arranged at a distance from one another and are driven by at least one of them. The roller 20 is only hinted at in the drawing. The sheets to be folded are brought via the conveyor belts 10, 12, 14, 16 in the direction of an arrow F to a stop 22 which is arranged transversely to the direction of transport F. A folding sword 24, which is arranged parallel to the conveyor belts and between the conveyor belts 12, 14, cooperates with the folding roller, which is arranged under the conveyor belts 10, 12, 14, 16 and is not shown in the drawing. This folding sword 24 can be moved up and down. Its up and down movement is controlled by a folding sword control, not shown.

Ein Bogendetektor 26, der die Aufgabe hat, den Durchgang eines Bogens zu registrieren, ist auf einer zu den Transportbändern parallelen Schiene 28 derart einstellbar angeordnet, daß sein Abstand von dem Anschlag 22 eingestellt werden kann. Zur Feststellung des Bogendetektors 26, der vorzugsweise als Lichtschranke ausgebildet ist, auf der Schiene 28 dient eine Feststellschraube 30.A sheet detector 26, which has the task of registering the passage of a sheet, is adjustably arranged on a rail 28 parallel to the conveyor belts in such a way that its distance from the stop 22 can be adjusted. A locking screw 30 is used on the rail 28 to determine the arc detector 26, which is preferably designed as a light barrier.

Nachdem ein (nicht dargestellter) zu falzender Bogen in Richtung des Pfeiles F herangeführt und von'den Transportbändern 10.12,14,16 übernommen ist, gelangt seine Vorderkante unter den Bogendetektor 26 und wird von diesem durch Abgabe eines Signals erfaßt. Anschließend wird der Bogen bis an den Anschlag 22 weitergeführt, wo er nach einer kurzen Beruhigungszeit parallel zu diesem Anschlag 22 liegen bleibt, um dann von dem Falzschwert 24 in den darunterliegenden Falzspalt der (nicht dargestellten) Falzwalze eingeschlagen zu werden. Der Abstand des Bogendetektors 26 von dem Anschlag 22 wird so eingestellt, daß die Hinterkante des zu falzenden Bogens den Bogendetektor 26 bereits passiert hat. Wenn hingegen der an dem Anschlag 22 liegende Bogen falsch ausgerichtet ist oder verfalzt ist und daher eine zu große Länge aufweist, hat die Hinterkante des Bogens den Bogendetektor noch nicht passiert. Dieser gibt weiterhin ein Signal ab, das der Anwesenheit eines Bogens entspricht.After a sheet (not shown) to be folded is brought in the direction of arrow F and taken over by the conveyor belts 10, 12, 14, 16, its front edge passes under the sheet detector 26 and is detected by this by emitting a signal. The sheet is then continued up to the stop 22, where it runs parallel after a short calming time remains at this stop 22, in order then to be driven by the folding sword 24 into the underlying folding gap of the folding roller (not shown). The distance of the sheet detector 26 from the stop 22 is set so that the rear edge of the sheet to be folded has already passed the sheet detector 26. If, on the other hand, the sheet lying on the stop 22 is misaligned or folded and is therefore too long, the rear edge of the sheet has not yet passed the sheet detector. This continues to emit a signal corresponding to the presence of an arc.

Die in dem Blockschaltbild der Fig. 2 gezeigte erste Ausführungsform einer Antriebssteuerung zur Steuerung des Antriebs der Transportbänder 10, 12, 14, 16 enthält einen Zeitgeber 32 in Form eines monostabilen Multivibrators, dessen Eigenzeit an einem Steuereingang 34 eingestellt werden kann. Der Zeitgeber 32 weist ferner einen Auslöseeingang 36 auf, der über eine elektrische Leitung mit dem Ausgang des Bogendetektors 26 verbunden ist. Der Ausgang 38 des Zeitgebers 32 steuert einen invertierenden Eingang einer AND-Schaltung 40 an, deren zweiter, nichtinvertierender Eingang mit dem Ausgang des Bogendetektors 26 verbunden ist. Der Ausgang der AND-Schaltung 40 steuert den Eingang eines Verstärkers 42 an, dessen Ausgang mit einer (nicht dargestellten) Anordnung verbunden ist, welche den Antrieb der Transportbänder 10, 12, 14, 16 stillsetzt, wenn der Verstärker 42 ein Ausgangssignal liefert.The first embodiment of a drive control for controlling the drive of the conveyor belts 10, 12, 14, 16 shown in the block diagram of FIG. 2 contains a timer 32 in the form of a monostable multivibrator, the proper time of which can be set at a control input 34. The timer 32 also has a trigger input 36, which is connected to the output of the arc detector 26 via an electrical line. The output 38 of the timer 32 controls an inverting input of an AND circuit 40, the second, non-inverting input of which is connected to the output of the arc detector 26. The output of the AND circuit 40 drives the input of an amplifier 42, the output of which is connected to an arrangement (not shown) which stops the drive of the conveyor belts 10, 12, 14, 16 when the amplifier 42 delivers an output signal.

Das an den Steuereingang 34 angelegte Steuersignal ist das Ausgangssignal eines Differenzverstärkers 44, dessen invertierender Eingang mit dem Ausgang eines Tachometergenerators 46 verbunden ist. Der Tachometergenerator 46 erzeugt ein Signal, welches der Antriebsgeschwindigkeit der Transportbänder 10,12,14,16 proportional ist. Der nichtinvertierende Eingang des Differenzverstärkers 44 ist mit dem Ausgang einer Steuereinheit 48 verbunden, die ein Potentiometer enthält, an dessen Schleifer ein Signal abgegriffen wird, dessen Pegel der eingestellten Einzuglänge der Falzmaschine entspricht. Die Steuereinheit 48 ist insbesondere an taktgesteuerten Falzmaschinen vorhanden und dient bei diesen zur Einstellung der Einzuglänge entsprechend den zu falzenden Bogen. An den Differenzverstärker 44 gelangt somit ein Signal, das bei Falzmaschinen der betreffenden Art ohnehin zur Verfügung steht und bei der erfindungsgemäßen Falzmaschine einem weiteren Zweck zugeführt wird, nämlich der Einstellung der Eigenzeit des Zeitgebers 32.The control signal applied to the control input 34 is the output signal of a differential amplifier 44, the inverting input of which is connected to the output of a tachometer generator 46. The tachometer generator 46 generates a signal which is proportional to the drive speed of the conveyor belts 10, 12, 14, 16. The non-inverting input of the differential amplifier 44 is connected to the output of a control unit 48, which contains a potentiometer, at the wiper of which a signal is tapped whose level corresponds to the set feed length of the folding machine. The control unit 48 is present in particular on clock-controlled folding machines and is used to adjust the feed length in accordance with the sheets to be folded. A signal thus arrives at the differential amplifier 44, which is available anyway in the case of folding machines of the type in question and is used for a further purpose in the folding machine according to the invention, namely the setting of the natural time of the timer 32.

Der Differenzverstärker 44 bildet die Differenz aus dem die eingestellte Einzuglänge darstellenden Signal aus der Einstelleinheit 48 und dem geschwindigkeitsabhängigen Signal aus dem Tachometergenerator 46. Das Differenzsignal, welches an den Eingang 34 des Zeitgeber 32 angelegt ist, bestimmt die Zeitspanne, nach deren Ablauf über die AND-Schaltung 40 der Verstärker 42 angesteuert wird, um den Antrieb der Transportbänder 10,12,14.16 stillzusetzen, wenn am Ende dieser Zeitspanne nicht das von dem Bogendetektor 26 abgegebene Signal anzeigt, daß die Hinterkante des Bogens den Bogendetektor passiert hat. Der Verstärker 42 liefert also nur dann ein Abschaltsignal an den Antrieb der Transportbänder, wenn nach der Erfassung der Vorderkante eines Bogens durch den Bogendetektor 26 eine vorbestimmte Zeitspanne abgelaufen ist, ohne daß der Bogendetektor 26 die Hinterkante dieses Bogens erfaßt hat. Diese Zeitspanne hängt einerseits von der eingestellten Einzuglänge, andererseits von der Arbeitsgeschwindigkeit der Falzmaschine ab. Je größer die Einzuglänge ist, desto größer ist die Zeitspanne. Je höher die Arbeitsgeschwindigkeit der Falzmaschine ist, desto kürzer ist die Zeitspanne. Auf diese Weise wird eine selbsttätige Einstellung der betreffenden Zeitspanne in Abhängigkeit von der jeweiligen Einzuglänge und Arbeitsgeschwindigkeit der Falzmaschine erreicht, die gewährleistet, daß eine Abschaltung der Maschine im Falle einer Störung ausreichend schnell erfolgt, damit eine Störung noch leicht behoben werden kann. Die Dauer der Zeitspanne wird vorzugsweise so bemessen, daß die Abschaltung der Maschine erfolgt, wenn nach der Ankunft eines verfalzten oder schrägliegenden Bogens an dem Anschlag 22 noch etwa zwei weitere Bogen herangeführt worden sind. Bei einer wesentlich größeren Anzahl von Boen bereitet die Beseitigung der Störung bereits größere Schwierigkeiten. Eine sofortige Abschaltung nach Feststellung eines verfalzten oder schrägliegenden Bogens am Anschlag 22 hätte aber zur Folge, daß eine Abschaltung in unerwünschter Weise auch dann erfolgen würde, wenn die zu falzenden Bogen von einer vorgeschalteten Falzmaschine übernommen werden, die mit einer niedrigeren Geschwindigkeit arbeitet und die Bogen noch eine Weile festhält, bis sie mit der den Transportbändern 10, 12, 14, 16 entsprechenden Geschwindigkeit weitertransportiert werden. Die Eigenzeit des Zeitgebers 32 wird daher in vorteilhafter Weise wesentlich größer bemessen, als die Zeit, die ein Bogen benötigt, um nach Registrierung seiner Vorderkante durch den Bogendetektor dessen Erfassungsbereich vollständig zu verlassen.The differential amplifier 44 forms the difference between the signal representing the set feed length from the setting unit 48 and the speed-dependent signal from the tachometer generator 46. The difference signal, which is applied to the input 34 of the timer 32, determines the period of time after which the AND Circuit 40 of the amplifier 42 is activated to stop the drive of the conveyor belts 10, 12, 14, 16 if, at the end of this period, the signal emitted by the sheet detector 26 does not indicate that the trailing edge of the sheet has passed the sheet detector. The amplifier 42 therefore only delivers a switch-off signal to the drive of the conveyor belts if, after the detection of the leading edge of a sheet by the sheet detector 26, a predetermined period of time has elapsed without the sheet detector 26 having detected the trailing edge of this sheet. This time period depends on the one hand on the feed length set and on the other on the working speed of the folding machine. The longer the feed length, the longer the time span. The higher the working speed of the folding machine, the shorter the time span. In this way, an automatic setting of the time period in question depending on the respective feed length and working speed of the folding machine is achieved, which ensures that the machine is switched off sufficiently quickly in the event of a fault, so that a fault can still be easily remedied. The duration of the time period is preferably such that the machine is switched off when, after the arrival of a folded or slanting sheet, about two more sheets have been brought up to the stop 22. With a significantly larger number of gusts, the elimination of the disturbance is already more difficult. An immediate shutdown after detection of a folded or inclined sheet at the stop 22 would have the consequence that a shutdown would occur in an undesirable manner even if the sheets to be folded are taken over by an upstream folding machine that works at a lower speed and the sheets holds for a while until they are transported at the speed corresponding to the conveyor belts 10, 12, 14, 16. The intrinsic time of the timer 32 is therefore advantageously dimensioned much larger than the time it takes for a sheet to completely leave its detection area after the sheet detector has registered its leading edge.

Bei der Ausführungsform nach Fig. 3 stimmen die Einstelleinheit 48, der Differenzverstärker 44 und der Verstärker 42 mit der Ausführungsform nach Fig. 2 überein und werden daher nicht weiter erläutert. Anstelle einer AND-Schaltung 40 bei Fig. 2 erhält jedoch der Verstärker 42 sein Ansteuersignal vom Ausgang eines Schwellwertdetektors 50, dessen den Schwellwert festlegender Eingang 52 mit dem Ausgang des Differenzverstärkers 44 und dessen Signaleingang 54 mit dem Ausgang eines Integrators 56 verbunden ist, dessen Eingang mit dem Ausgang des Bogendetektors 26 verbunden ist.In the embodiment according to FIG. 3, the setting unit 48, the differential amplifier 44 and the amplifier 42 correspond to the embodiment according to FIG. 2 and are therefore not explained further. Instead of an AND circuit 40 in FIG. 2, however, the amplifier 42 receives its drive signal from the output of a threshold value detector 50, the input 52 of which defines the threshold value is connected to the output of the differential amplifier 44 and the signal input 54 of which is connected to the output of an integrator 56, the input of which With the output of the arc detector 26 is connected.

Ferner empfängt der invertierende Eingang des Differenzverstärkers 44 das Ausgangssignal eines Frequenz/Spannungs-Umsetzers 58, dessen Signaleingang 60 mit dem Ausgang eines Taktgenerators 62 verbunden ist. Der Taktgenerator 62 ist bei taktgesteuerten Falzmaschinen ohnehin vorhanden und bestimmt deren Arbeitsgeschwindigkeit. Die von dem Frequenz/Spannungs-Umsetzer 58 abgegebene Ausgangsspannung ist eine Gleichspannung, deren Pegel somit der Arbeitsgeschwindigkeit der Falzmaschine proportional ist.Furthermore, the inverting input of the differential amplifier 44 receives the output signal of a frequency / voltage converter 58, the signal input 60 of which is connected to the output of a clock generator 62. The clock generator 62 is present in any case in clock-controlled folding machines and determines their operating speed. The output voltage output by the frequency / voltage converter 58 is a DC voltage, the level of which is therefore proportional to the operating speed of the folding machine.

Auch die in Fig. 3 gezeigte Ausführungsform enthält einen Zeitgeber; dieser Zeitgeber ist durch den Schwellwertdetektor 50 gebildet, der ein Ausgangssignal an den Verstärker 42 abgibt, sobald das von dem Integrator 56 abgegebene Signal den Pegel des Ausgangssignals des Differenzverstärkers 44 erreicht. Das Ausgangssignal des Integrators 56 ist das Zeitintegral seines von dem Bogendetektor 26 abgegebenen Eingangssignals und weist daher einen Pegel auf, der mit der Zeit entsprechend der Kennlinie des Integrators 56 zunimmt.The embodiment shown in Fig. 3 also includes a timer; this timer is formed by the threshold detector 50, which outputs an output signal to the amplifier 42 as soon as the signal output by the integrator 56 reaches the level of the output signal of the differential amplifier 44. The output signal of the integrator 56 is the time integral of its input signal emitted by the arc detector 26 and therefore has a level which increases over time in accordance with the characteristic curve of the integrator 56.

Die Ausführungsform nach Fig. 3 ist besonders bei taktgesteuerten Falzmaschinen von Vorteil, da bei diesen ein zusätzlicher Tachometergenerator (46 bei Fig. 2) entfallen kann.The embodiment according to FIG. 3 is particularly advantageous in the case of clock-controlled folding machines, since an additional tachometer generator (46 in FIG. 2) can be omitted.

Bei der Ausführungsform nach Fig. 2 kann anstelle des Tachometergenerators 46 die in Fig. 3 gezeigte Anordnung aus Taktsignalgenerator 62 und Frequenz/Spannungs-Umsetzer 58 verwendet werden, ebenso wie bei der Ausführungsform nach Fig. 3 anstelle des Integrators 56 ein Zeitgeber 32 wie bei der Ausführungsform nach Fig. 2 verwendet werden kann.In the embodiment according to FIG. 2, instead of the tachometer generator 46, the arrangement shown in FIG. 3 consisting of clock signal generator 62 and frequency / voltage converter 58 can be used, just as in the embodiment according to FIG. 3 a timer 32 instead of the integrator 56 as in FIG the embodiment of FIG. 2 can be used.

Die in den Figuren 2 und 3 gezeigten Ausführungsformen können unter Verwendung von herkömmlichen, im Handel verfügbaren Bauteilen verwirklicht werden. Diese Verwirklichung bereitet für den Fachmann auf dem Gebiet der Elektronik keinerlei Schwierigkeiten und wird daher hier nicht weiter erläutert.The embodiments shown in Figures 2 and 3 can be implemented using conventional, commercially available components. This realization does not pose any difficulties for the person skilled in the electronics field and is therefore not further explained here.

Claims (14)

1. Blade folding machine having at least one folding roller, a folding blade (24) co-operating therewith, feed belts (10, 12, 14, 16) extending parallel to the folding blade, a stop (22) disposed transvensely of the feed belts, a sheet detector (26) which registers the passage of a sheet to be folded on the feed belts and the distance of which from the stop (22) is so dimensioned that a sheet lying ready for folding at the stop no longer lies in the detection region of the sheet detector (26), a folding blade control which evaluates the signal of the sheet detector (26) and activates the folding blade (24) only after a sheet led up to the stop (22) after detection by the sheet detector has left the detection region thereof, and a drive control for the drive of the feed belts (10, 12, 14, 16) which stops the drive when a sheet which has been brought up and registered by the sheet detector (26) has not left the detection region of the sheet detector again after expiry of a measurement period starting with the sheet detection, characterized in that the sheet detector (26) is spaced from the stop (22) a distance corresponding to the sheet length, the drive control for the drive of the feed sheets is independent of the folding blade control and the measurement period decisive for the stopping of the drive of the feed belts (10, 12, 14, 16) is a predetermined period.
2. Blade folding machine according to claim 1, characterized in that the predetermined period is set so that after a sheet has been brought up to the stop if said sheet has not again left the detection region of the sheet detector (26) a number n of further sheets are brought up before the drive is stopped.
3. Blade folding machine according to claim 2, characterized in that the number n is equal to 1.
4. Blade folding machine according to claim 2, characterized in that the number n is equal to 2.
5. Blade folding machine according to any one of the preceding claims, characterized in that the drive control for the drive of the feed belts includes a timer (32; 56, 50) whose activating input (36; 54) is connected to the signal output of the sheet detector (26).
6. Blade folding machine according to claim 5, characterized in that the timer (32; 56, 50) has a controllable intrinsic time.
7. Blade folding machine according to claim 6, characterized in that the intrinsic time of the timer (32; 56, 50) is controlled by a speed-dependent signal derived from the speed of the feed belts (10,12,14,16).
8. Blade folding machine according to claim 6, characterized in that the intrinsic time of the timer (32; 56, 50) is controlled by a signal derived from a sheet feed length setting unit (48).
9. Blade folding machine according to claims 7 and 8, characterized in that the speed-dependent signal and the signal derived from the sheet feed length setting unit (48) are applied to the inputs of a differential amplifier (44) whose output is connected to the intrinsic time control input (34; 52) of the timer (32; 56, 50).
10. Blade folding machine according to claim 7 or 9, characterized in that the speed-dependent signal is derived by a tachometer generator (46) coupled to the drive of the feed belts (10,12, 14, 16).
11. Blade folding machine according to claim 7 or 9, characterized in that the speed-dependent signal is derived by a frequency-voltage converter (58) which converts the clock signal of a clock signal generator (62) controlling the drive of the folding machine to a voltage signal proportional to the clock signal frequency.
12. Blade folding machine according to any one of claims 9 to 11, characterized in that the timer is formed by a monostable multivibrator (32) whose intrinsic time control input (34) is connected to the output of the differential amplifier (44).
13. Blade folding machine according to any one of claims 9 to 11, characterized in that the timer is formed by a threshold detector (50) and an integrator (56) whose output is connected to the signal input (54) of the threshold detector (50) and whose input (52) defining the threshold is connected to the output of the differential amplifier (44) whilst the input of the integrator (56) is connected to the output of the sheet detector (26).
14. Blade folding machine according to any one of the preceding claims, characterized in that the sheet detector is displaceable on a rail (28) disposed parallel to the lead-up direction (F) of the sheet to be folded and is lockable on said rail (28) so that its distance from the stop (22) is adjustable.
EP84108113A 1983-07-12 1984-07-11 Blade folding machine Expired EP0131310B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833325139 DE3325139A1 (en) 1983-07-12 1983-07-12 SWORD FOLDING MACHINE
DE3325139 1983-07-12

Publications (2)

Publication Number Publication Date
EP0131310A1 EP0131310A1 (en) 1985-01-16
EP0131310B1 true EP0131310B1 (en) 1986-10-15

Family

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EP84108113A Expired EP0131310B1 (en) 1983-07-12 1984-07-11 Blade folding machine

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EP (1) EP0131310B1 (en)
JP (1) JPS60501807A (en)
DD (1) DD219645A5 (en)
DE (2) DE3325139A1 (en)
WO (1) WO1985000350A1 (en)

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DE4109730A1 (en) * 1990-04-04 1991-10-24 Brehmer Buchbindereimaschinen Stop for knife folders for sheets of paper - consists of holders movable mounted on support arm with lifting magnet, plunger and spring

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JPH083419Y2 (en) * 1990-10-08 1996-01-31 株式会社小森コーポレーション Signature inspection device
IT1249953B (en) * 1991-07-08 1995-03-30 Bonelli Ind S R L BENDING MACHINE, PARTICULARLY FOR THE REALIZATION OF PRINTING SIGNATURES
DE4315095A1 (en) * 1993-05-06 1994-11-10 Stahl Gmbh & Co Maschf Method for operating a folding machine
DE10059271A1 (en) * 2000-11-29 2002-06-06 Heidelberger Druckmasch Ag Falzschwertsteuerung
JP2005126233A (en) * 2003-10-27 2005-05-19 Heidelberger Druckmas Ag Apparatus for processing intermediate product in graphics industry
DE102004040620A1 (en) * 2004-05-05 2005-12-01 Man Roland Druckmaschinen Ag Device for scanning of front edges of sheet for aligning in sheet feed system of press has front marks on feed table provided with sensors movable in relation to front marks inside guides orientated in direction of movement of sheets

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JPS5081347A (en) * 1973-11-19 1975-07-02
DE3022607C2 (en) * 1980-06-16 1984-01-26 Maschinenbau Oppenweiler Binder GmbH & Co, 7155 Oppenweiler Folding machine
DE3201403A1 (en) * 1981-01-20 1982-08-12 Canon K.K., Tokyo AUTOMATIC DOCUMENT FEEDER
JPS5863959A (en) * 1981-10-14 1983-04-16 Canon Inc Detector for jam of copying material

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4109730A1 (en) * 1990-04-04 1991-10-24 Brehmer Buchbindereimaschinen Stop for knife folders for sheets of paper - consists of holders movable mounted on support arm with lifting magnet, plunger and spring

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WO1985000350A1 (en) 1985-01-31
DD219645A5 (en) 1985-03-13
JPS60501807A (en) 1985-10-24
DE3460960D1 (en) 1986-11-20
EP0131310A1 (en) 1985-01-16
DE3325139A1 (en) 1985-01-24

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