EP0236702A1 - Device for adjusting the tension of a web with an emergency stop device - Google Patents

Device for adjusting the tension of a web with an emergency stop device Download PDF

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Publication number
EP0236702A1
EP0236702A1 EP87100881A EP87100881A EP0236702A1 EP 0236702 A1 EP0236702 A1 EP 0236702A1 EP 87100881 A EP87100881 A EP 87100881A EP 87100881 A EP87100881 A EP 87100881A EP 0236702 A1 EP0236702 A1 EP 0236702A1
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EP
European Patent Office
Prior art keywords
brake
solenoid valve
control
emergency stop
pneumatic
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.)
Granted
Application number
EP87100881A
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German (de)
French (fr)
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EP0236702B1 (en
Inventor
Josef Hammer
Walter Handschuher
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.)
Manroland AG
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MAN Roland Druckmaschinen AG
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Publication of EP0236702A1 publication Critical patent/EP0236702A1/en
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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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • B65H23/063—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/70—Clutches; Couplings
    • B65H2403/72—Clutches, brakes, e.g. one-way clutch +F204
    • B65H2403/725—Brakes
    • B65H2403/7253—Brakes pneumatically controlled

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • a device is known from DE-PS 30 44 462.
  • further brakes are required, which means a considerable expenditure of material with the necessary control means, it is not possible to carry out a regulated quick stop in dangerous situations or when necessary.
  • Another disadvantage is that the use of electrical or electromagnetic brakes means that the response time is relatively high both during the control process in normal operation and during an emergency stop.
  • the object of the invention is to provide a device for regulating the tension of a print carrier web which, in addition to a compact, inexpensive construction, requires fewer control elements, which reacts faster both in normal operation and when an emergency stop is to be carried out, with which a regulated emergency stop can be carried out and with the addition of only two switching elements, if desired, a quick stop in the event of a power failure and the use of the existing brakes as a residual roller brake for a reel changer is possible.
  • the invention is preferably used in a web-fed rotary printing press in which print carrier webs, for example paper webs, are printed.
  • a roller carrier (1) is usually used for this purpose, around whose bearing (2), preferably two material rollers (4, 5) arranged on a double arm (3), are rotatably positioned.
  • the print carrier web (14) to be regulated is drawn off from one of the rollers, for example from the roller (5), and fed to a rotary printing press, not shown.
  • the material rolls (4 and 5) are rotatably mounted on a pair of mandrels or on a roll core (6, 7).
  • a core brake (8 or 9) is arranged on each of the roller cores (6, 7).
  • Each of the core brakes (8, 9) has at least two brake calipers (10, 11 and 12, 13). It is advantageous to use the brake calipers (11 and 13) that are required for the emergency stop regulated according to the invention with a higher coefficient of friction to design as the brake calipers (10 and 12) required for normal operation and / or to provide them twice.
  • the print carrier web (14) to be controlled is guided over several conventional deflection rollers.
  • a deflectable roller for example a so-called dancer roller (17), is arranged between the deflection rollers (15 and 16), the position of which roller is scanned in order to obtain control signals for the web tension.
  • a pneumatic piston (18) is used to preset the web tension or the desired web tension with the aid of a device (20).
  • the pneumatic cylinder (18) allows the dancer roller (17) to move in the direction of the double arrow (19).
  • the deflection of the dancer roller (17) is determined by means of its pivotable arm (21), the upper and lower maximum deflection being limited by stops (22, 23).
  • An electrical transducer (24) is used for this purpose, which detects the respective angular position of the arm (21).
  • a control / computing unit (28) via a line (25), which is shown in FIG.
  • this can include, for example, a freely programmable microprocessor.
  • control / computing unit (28) determines control information which is required for normal operation and for a regulated emergency stop. These pass through a line (27) to an electrically controllable air pressure regulator (26), which can also be referred to as an electro-pneumatic converter.
  • the compressed air coming from a compressor is fed to the air pressure regulator (26) via an air line (29).
  • the air pressure is regulated in accordance with the electrical control signals applied to it, so that a proportional pressure change corresponding to the electrical ones at the outlet (30) Values occurs.
  • the minimum air pressure at the outlet (30) is preferably at least 0.5 bar.
  • the output (30) is connected to the input of a solenoid valve (31), which is preferably a servo solenoid valve, which is why an additional line (32) pressurized with compressed air is required.
  • the solenoid valve (31) has two compressed air outlets (35 and 35 ⁇ ).
  • one of the lines (35 or 35 ⁇ ) is pressurized with compressed air.
  • the line (35) leads to a control part (34) which is assigned to the material roll (5) and the corresponding brakes (10, 11), while the line (35 ⁇ ) to the control parts (34 ⁇ ) constructed in the same way and to the brakes (12, 13) for the material roll (4).
  • the air line (35) leads to a further solenoid valve (36) with two outlets (41 and 43) in the circuit part (34) for the material roll (5).
  • the solenoid valve (36) is preferably also a servo solenoid valve, a compressed air line (37) is also required.
  • One of the outputs (41) of the solenoid valve (36) is located at an input of a pneumatic OR element (42), while the other output (43) is preferably via a further OR element (44), the output line (46) of which is via the OR element (42) the brake (10) and is directly connected to the brake (11) for regulated emergency stop.
  • the output of the OR element (42) is connected to the brake (10) for normal operation via a line (47).
  • the control signals from the control / computing unit (28) either the air line (41) or the air line (43) with regulated compressed air acted upon.
  • the line (41) carries compressed air, which reaches the brake (10) for normal operation via the OR element (42), so that sensitive, fast-reacting web tension control is made possible during normal operation.
  • control and computing unit (28) reverses the solenoid valve (36) so that the brake (11) for is now directly via the air line (43), the OR element (44) and the air line (46) an emergency stop can be acted upon with the regulated compressed air, and the output of the OR element (44) is simultaneously applied to the brake (10) via the OR element (42).
  • a controlled and thus sensitive emergency stop can thus be carried out via both brakes (10, 11). As a result, the risk of a web break is largely reduced or can be avoided entirely.
  • a servo solenoid valve (38) which is connected to air lines (40 and 39), through which uncontrolled compressed air is supplied, the electr. Tension and when changing the roll for residual roll braking via the line (45) compressed air to the OR link (44) and thus, even if unregulated, again to the brakes (10 and 11) at the same time, so that in these situations, even if unregulated, a quick Stopping or braking the respective roll, here the material roll (4) is guaranteed. If there is a voltage from the control / computing unit (28) to the solenoid valve (38), this is blocked, so that the air does not reach the outlet, i.e. reaches the line (45).
  • the solenoid valve (31) When performing a roll change, the solenoid valve (31) is switched over via the line (48) from the control / computing unit (28), so that compressed air reaches the line (35 ⁇ ).

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Abstract

Zur Durchführung eines schnell reagierenden, geregelten Notstopps werden die die Bahnspannung jeweils interpretierenden elektrischen Signale über eine Steuer-/Recheneinheit (28) einem elektrisch steuerbaren Druckluftregler (26) zugeführt. Von diesem wird geregelte Druckluft über ein weiteres Magnetventil (36), entweder über ein Oderglied (42) direkt der Bremse (10) für den Normalbetrieb oder bei Notstopp über das Oderglied (44) und direkt der Bremse für den Normalbetrieb und einer Notbremse (11) zugeführt. Somit ist ein geregelter Notstopp über beide Bremsen möglich.To carry out a quickly reacting, regulated emergency stop, the electrical signals that interpret the web tension are fed via a control / computing unit (28) to an electrically controllable compressed air regulator (26). Regulated compressed air is supplied by this via a further solenoid valve (36), either via an OR element (42) directly to the brake (10) for normal operation or in the event of an emergency stop via the OR element (44) and directly to the brake for normal operation and an emergency brake (11 ) fed. This means that a controlled emergency stop is possible using both brakes.

Description

Die Erfindung betrifft eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1. Eine derartige Vorrichtung ist aus der DE-PS 30 44 462 bekannt. Abgesehen davon, daß bei dieser bekannten Anordnung neben der auf dem Dornpaar des Rollenträgers angeordneten Kernbremse weitere Bremsen benötigt werden, was mit den dazu erforderlichen Steuermitteln einen erheblichen Materialaufwand bedeutet, ist es dort nicht möglich, einen geregelten Schnellstopp in Gefahrensituationen bzw. im Bedarfsfall durchzuführen. Ein weiterer Nachteil ist darin zu sehen, daß durch die Verwendung von elektrischen bzw. elektromagnetischen Bremsen die Ansprechzeit sowohl während des Regelvorganges im Normalbetrieb als auch beim Notstopp verhältnismäßig hoch ist.The invention relates to a device according to the preamble of claim 1. Such a device is known from DE-PS 30 44 462. Apart from the fact that in this known arrangement, in addition to the core brake arranged on the pair of mandrels of the roller carrier, further brakes are required, which means a considerable expenditure of material with the necessary control means, it is not possible to carry out a regulated quick stop in dangerous situations or when necessary. Another disadvantage is that the use of electrical or electromagnetic brakes means that the response time is relatively high both during the control process in normal operation and during an emergency stop.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung zum Regeln der Spannung einer Druckträgerbahn aufzuzeigen, die neben einer kompakten preiswerten Bauweise weniger Steuerelemente benötigt, die sowohl im Normalbetrieb als auch bei einem auszuführenden Notstopp schneller reagiert, mit der ein geregelter Notstopp durchführbar ist und mit der gewünschtenfalls durch die Hinzufügung nur zweier Schaltelemente ein schneller Stopp bei Spannungsausfall sowie die Verwendung der vorhandenen Bremsen als Restrollenbremse bei einem Rollenwechsler möglich ist.Proceeding from this, the object of the invention is to provide a device for regulating the tension of a print carrier web which, in addition to a compact, inexpensive construction, requires fewer control elements, which reacts faster both in normal operation and when an emergency stop is to be carried out, with which a regulated emergency stop can be carried out and with the addition of only two switching elements, if desired, a quick stop in the event of a power failure and the use of the existing brakes as a residual roller brake for a reel changer is possible.

Diese Aufgabe wird durch die Anwendung der Merkmale gemäß dem kennzeichnenden Teil des Patentanspruchs 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen sowie aus der Beschreibung in Verbindung mit den Zeichnungen. Aus der europäischen Patentschrift 00 13 368 ist es zwar bereits bekannt, einen Notstopp durchzuführen, der an die gerade herrschenden Betriebsbedingungen angepaßt, also geregelt ist, jedoch wird dafür eine aufwendige Steuer- und Regelschaltung benötigt, die u.a. wegen der verwendeten Drosselstellen das System dämpft und die somit besonders bei starken Bahnzugschwankungen eine zu große Totzeit im Regelkreis und damit eine zu späte Reaktion erwarten läßt.This object is achieved by using the features according to the characterizing part of patent claim 1. Advantageous developments of the invention result from the subclaims and from the description in conjunction with the drawings. From European patent specification 00 13 368, it is already known to carry out an emergency stop, which is to the the prevailing operating conditions are adjusted, i.e. regulated, but this requires a complex control circuit which, among other things, dampens the system because of the throttling points used, and which therefore leads to an excessive dead time in the control circuit and thus a late reaction, especially in the event of strong web train fluctuations .

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels beschrieben, wobei Bezug auf die beiliegenden Zeichnungen genommen wird. In diesen zeigen:

  • Fig.1 eine schematische Darstellung eines Abschnittes der zu regelnden Druckträgerbahn mit einem Meßwertaufnehmer hinter einem Rollenwechsler und
  • Fig.2 ein elektro-pneumatisches Schaltbild zur Durchführung der normalen Regelung und des Notstopps.
The invention is described below using an exemplary embodiment, reference being made to the accompanying drawings. In these show:
  • 1 shows a schematic representation of a section of the print carrier web to be controlled with a sensor behind a reel changer and
  • 2 shows an electro-pneumatic circuit diagram for carrying out the normal control and the emergency stop.

Vorzugsweise wird die Erfindung in einer Rollenrotationsdruckmaschine verwendet, in der Druckträgerbahnen, beispielsweise Papierbahnen, bedruckt werden. Hierfür wird üblicherweise ein Rollenträger (1) verwendet, um dessen Lager (2) drehbar vorzugsweise zwei, an einem Doppelarm (3) angeordnete Materialrollen (4, 5) positioniert werden. Von einer der Rollen, beispielsweise von der Rolle (5) wird bei der Darstellung gemäß Fig.1 die zu regelnde Druckträgerbahn (14) abgezogen und einer nicht dargestellten Rollenrotationsdruckmaschine zugeführt.The invention is preferably used in a web-fed rotary printing press in which print carrier webs, for example paper webs, are printed. A roller carrier (1) is usually used for this purpose, around whose bearing (2), preferably two material rollers (4, 5) arranged on a double arm (3), are rotatably positioned. In the illustration according to FIG. 1, the print carrier web (14) to be regulated is drawn off from one of the rollers, for example from the roller (5), and fed to a rotary printing press, not shown.

Die Materialrollen (4 und 5) sind auf jeweils einem Dornpaar bzw. auf einem Rollenkern (6, 7) drehbar gelagert. Auf jedem der Rollenkerne (6, 7) ist erfindungsgemäß eine Kernbremse (8 bzw. 9) angeordnet. Jede der Kernbremsen (8, 9) weist mindestens zwei Bremszangen (10, 11 bzw. 12, 13) auf. Es ist vorteilhaft, die Bremszangen (11 und 13), die für den erfindungsgemäß geregelten Notstopp benötigt werden, mit einem höheren Reibwert auszugestalten, als die für den Normalbetrieb benötigten Bremszangen (10 und 12) und/oder diese doppelt vorzusehen.The material rolls (4 and 5) are rotatably mounted on a pair of mandrels or on a roll core (6, 7). According to the invention, a core brake (8 or 9) is arranged on each of the roller cores (6, 7). Each of the core brakes (8, 9) has at least two brake calipers (10, 11 and 12, 13). It is advantageous to use the brake calipers (11 and 13) that are required for the emergency stop regulated according to the invention with a higher coefficient of friction to design as the brake calipers (10 and 12) required for normal operation and / or to provide them twice.

Die zu regelnde Druckträgerbahn (14) wird über mehrere herkömmliche Umlenkwalzen geführt. Zwischen den Umlenkwalzen (15 und 16) ist eine auslenkbare Walze, beispielsweise eine sogenannte Tänzerwalze (17) angeordnet, deren Position abgetastet wird, um Regelsignale für die Bahnspannung zu erhalten.The print carrier web (14) to be controlled is guided over several conventional deflection rollers. A deflectable roller, for example a so-called dancer roller (17), is arranged between the deflection rollers (15 and 16), the position of which roller is scanned in order to obtain control signals for the web tension.

Durch einen Pneumatikkolben (18) wird mit Hilfe einer Vorrichtung (20) der Bahnzug bzw. die gewünschte Bahnspannung voreingestellt. Der Pneumatikzylinder (18) läßt eine Bewegung der Tänzerwalze (17) in Richtung des Doppelpfeiles (19) zu. Die Auslenkung der Tänzerwalze (17) wird mittels ihres verschwenkbaren Armes (21) ermittelt, wobei die obere und untere maximale Auslenkung durch Anschläge (22, 23) begrenzt ist. Hierfür wird ein elektrischer Meßwertaufnehmer (24) eingesetzt, der die jeweilige Winkellage des Armes (21) feststellt. Entsprechend der Winkellage wird über eine Leitung (25) ein elektrisches Signal an eine Steuer-/Recheneinheit (28) gegeben, die in Fig.2 gezeigt ist. Diese kann in der Praxis beispielsweise einen freiprogrammierbaren Mikroprozessor umfassen. Aus den von dem Meßwertaufnehmer (24) kommenden elektrischen Signalen, ggf. in Verbindung mit Voreinstellwerten von der Vorrichtung (20), ermittelt die Steuer-/Recheneinheit (28) Steuerinformationen, die für den Normalbetrieb und für einen geregelten Notstopp benötigt werden. Diese gelangen über eine Leitung (27) an einen elektrisch steuerbaren Luftdruckregler (26), der auch als elektro-pneumatischer Wandler bezeichnet werden kann.A pneumatic piston (18) is used to preset the web tension or the desired web tension with the aid of a device (20). The pneumatic cylinder (18) allows the dancer roller (17) to move in the direction of the double arrow (19). The deflection of the dancer roller (17) is determined by means of its pivotable arm (21), the upper and lower maximum deflection being limited by stops (22, 23). An electrical transducer (24) is used for this purpose, which detects the respective angular position of the arm (21). Depending on the angular position, an electrical signal is given to a control / computing unit (28) via a line (25), which is shown in FIG. In practice, this can include, for example, a freely programmable microprocessor. From the electrical signals coming from the transducer (24), possibly in connection with preset values from the device (20), the control / computing unit (28) determines control information which is required for normal operation and for a regulated emergency stop. These pass through a line (27) to an electrically controllable air pressure regulator (26), which can also be referred to as an electro-pneumatic converter.

Gemäß der Erfindung wird dem Luftdruckregler (26) über eine Luftleitung (29) die beispielsweise von einem Kompressor kommende Druckluft zugeführt. In dem Luftdruckregler (26) wird entsprechend den an diesen anliegenden elektrischen Steuersignalen der Luftdruck geregelt, so daß am Ausgang (30) eine proportionale Druckänderung entsprechend den elektrischen Werten auftritt. Vorzugsweise liegt der minimale Luftdruck am Ausgang (30) mindestens bei 0,5 bar. Der Ausgang (30) ist mit dem Eingang eines Magnetventiles (31) verbunden, das vorzugsweise ein Servomagnetventil ist, weshalb eine zusätzliche mit Druckluft beaufschlagte Leitung (32) erforderlich ist. Das Magnetventil (31) weist zwei Druckluftausgänge (35 und 35ʹ) auf. Entsprechend der Ansteuerung des Magnetventils (31) durch die Steuer-/Recheneinheit (28) ist eine der Leitungen (35 oder 35ʹ) mit Druckluft beaufschlagt. Die Leitung (35) führt zu einem Steuerteil (34), der der Materialrolle (5) und den entsprechenden Bremsen (10, 11) zugeordnet ist, während die Leitung(35ʹ) zu den in der gleichen Weise aufgebauten Steuerteilen (34ʹ) und zu den Bremsen (12, 13) für die Materialrolle (4) führt. Aus Vereinfachungsgründen wird im nachfolgenden lediglich der rechte Teil (34) der Schaltung in Fig. 2 beschrieben, der für die Materialrolle (5) benötigt wird, wenn von dieser die zu regelnde Bahn (14) abgenommen wird.According to the invention, the compressed air coming from a compressor, for example, is fed to the air pressure regulator (26) via an air line (29). In the air pressure regulator (26), the air pressure is regulated in accordance with the electrical control signals applied to it, so that a proportional pressure change corresponding to the electrical ones at the outlet (30) Values occurs. The minimum air pressure at the outlet (30) is preferably at least 0.5 bar. The output (30) is connected to the input of a solenoid valve (31), which is preferably a servo solenoid valve, which is why an additional line (32) pressurized with compressed air is required. The solenoid valve (31) has two compressed air outlets (35 and 35ʹ). Corresponding to the control of the solenoid valve (31) by the control / computing unit (28), one of the lines (35 or 35ʹ) is pressurized with compressed air. The line (35) leads to a control part (34) which is assigned to the material roll (5) and the corresponding brakes (10, 11), while the line (35ʹ) to the control parts (34ʹ) constructed in the same way and to the brakes (12, 13) for the material roll (4). For reasons of simplification, only the right-hand part (34) of the circuit in FIG. 2, which is required for the material roll (5) when the web (14) to be regulated is removed, is described below.

Die Luftleitung (35) führt zu einem weiteren Magnetventil (36) mit zwei Ausgängen (41 und 43) im Schaltungsteil (34) für die Materialrolle (5). Für die Materialrolle (4) wird das zuvor erwähnte Steuerteil (34ʹ) benötigt. Da vorzugsweise auch das Magnetventil (36) ein Servomagnetventil ist, wird zusätzlich eine Druckluftleitung (37) benötigt. Einer der Ausgänge (41) des Magnetventils (36) liegt an einem Eingang eines pneumatischen Odergliedes (42), während der andere Ausgang (43) vorzugsweise über ein weiteres Oderglied (44), dessen Ausgangsleitung (46) über das Oderglied (42) mit der Bremse (10) und direkt mit der Bremse (11) für geregelten Notstopp verbunden ist. Der Ausgang des Odergliedes (42) ist über eine Leitung (47) mit der Bremse (10) für Normalbetrieb verbunden. Entsprechend der Steuersignale von der Steuer-/Recheneinheit (28) wird entweder die Luftleitung (41) oder die Luftleitung (43) mit geregelter Druckluft beaufschlagt. Für den Normalbetrieb führt die Leitung (41) Druckluft, die über das Oderglied (42) an die Bremse (10) für Normalbetrieb gelangt, so daß eine feinfühlige, schnellreagierende Bahnspannungsregelung während des Normalbetriebes ermöglicht wird. Wird eine Notsituation festgestellt, so steuert die Steuer- und Recheneinheit (28) das Magnetventil (36) um, so daß nunmehr über die Luftleitung (43), das Oderglied (44) und die Luftleitung (46) direkt die Bremse (11) für einen Notstopp mit der geregelten Druckluft beaufschlagbar ist, und außerdem wird über das Oderglied (42) der Ausgang des Odergliedes (44) gleichzeitig an die Bremse (10) angelegt. Somit kann über beide Bremsen (10, 11) ein geregelter und somit feinfühliger Notstopp durchgeführt werden. Dadurch ist die Gefahr eines Bahnrisses weitestgehend reduziert bzw. ein solcher kann gänzlich vermieden werden.The air line (35) leads to a further solenoid valve (36) with two outlets (41 and 43) in the circuit part (34) for the material roll (5). For the material roll (4) the previously mentioned control part (34ʹ) is required. Since the solenoid valve (36) is preferably also a servo solenoid valve, a compressed air line (37) is also required. One of the outputs (41) of the solenoid valve (36) is located at an input of a pneumatic OR element (42), while the other output (43) is preferably via a further OR element (44), the output line (46) of which is via the OR element (42) the brake (10) and is directly connected to the brake (11) for regulated emergency stop. The output of the OR element (42) is connected to the brake (10) for normal operation via a line (47). According to the control signals from the control / computing unit (28), either the air line (41) or the air line (43) with regulated compressed air acted upon. For normal operation, the line (41) carries compressed air, which reaches the brake (10) for normal operation via the OR element (42), so that sensitive, fast-reacting web tension control is made possible during normal operation. If an emergency situation is determined, the control and computing unit (28) reverses the solenoid valve (36) so that the brake (11) for is now directly via the air line (43), the OR element (44) and the air line (46) an emergency stop can be acted upon with the regulated compressed air, and the output of the OR element (44) is simultaneously applied to the brake (10) via the OR element (42). A controlled and thus sensitive emergency stop can thus be carried out via both brakes (10, 11). As a result, the risk of a web break is largely reduced or can be avoided entirely.

Ober ein Servomagnetventil (38), das mit Luftleitungen (40 und 39) verbunden ist, über die ungeregelte Druckluft zugeführt wird, gelangt beim Ausfall der elektr. Spannung und bei einem Rollenwechsel zur Restrollenbremsung über die Leitung (45) Druckluft an das Oderglied (44) und somit, wenn auch ungeregelt, wiederum gleichzeitig an die Bremsen (10 und 11), so daß in diesen Situationen, wenn auch ungeregelt, ein schnelles Anhalten bzw. Abbremsen der jeweiligen Rolle, hier der Materialrolle (4) gewährleistet ist. Liegt von der Steuer-/Recheneinheit (28) an dem Magnetventil (38) eine Spannung an, so ist dieses gesperrt, so daß die Luft nicht an den Ausgang, d.h. an die Leitung (45) gelangt.Via a servo solenoid valve (38), which is connected to air lines (40 and 39), through which uncontrolled compressed air is supplied, the electr. Tension and when changing the roll for residual roll braking via the line (45) compressed air to the OR link (44) and thus, even if unregulated, again to the brakes (10 and 11) at the same time, so that in these situations, even if unregulated, a quick Stopping or braking the respective roll, here the material roll (4) is guaranteed. If there is a voltage from the control / computing unit (28) to the solenoid valve (38), this is blocked, so that the air does not reach the outlet, i.e. reaches the line (45).

Zur Ansteuerung der Magnetventile (31, 36, 38) führen zu diesen elektrische Leitungen (48, 49 und 50) von der Steuer- und Recheneinheit (28). In entsprechender Weise werden über Leitungen (49ʹ und 50ʹ) die entsprechenden Magnetventile (36ʹ und 38ʹ) des Schaltungsteils (34ʹ) für die Materialrolle (4) angesteuert.To control the solenoid valves (31, 36, 38) lead to these electrical lines (48, 49 and 50) from the control and computing unit (28). In a corresponding manner, the corresponding solenoid valves (36ʹ and 38ʹ) of the circuit part (34ʹ) for the material roll (4) are controlled via lines (49ʹ and 50ʹ).

Bei der Durchführung eines Rollenwechsels wird über die Leitung (48) von der Steuer-/Recheneinheit (28) her das Magnetventil (31) umgeschaltet, so daß Druckluft auf die Leitung (35ʹ) gelangt.When performing a roll change, the solenoid valve (31) is switched over via the line (48) from the control / computing unit (28), so that compressed air reaches the line (35ʹ).

Claims (6)

1. Vorrichtung zur Regelung der Spannung einer Druckträgerbahn mit einer Notsstoppeinrichtung, insbesondere für Rollenrotationsdruckmaschinen, mit einem Rollenträger zur Aufnahme mindestens einer Materialrolle, bei der im geregelten Normalbetrieb mit einer Steuerbremse und bei Gefahr oder Schnellstopp zusätzlich mit einer Notbremse die Materialrolle abbremsbar ist, wobei die Bahnspannung durch Abtastung der Lage einer von der Druckträgerbahn teilweise umschlungenen auslenkbaren Walze mittels eines Meßwertaufnehmers in Form von elektrischen Signalen ermittelt wird und letztere einer Steuer-/Recheneinheit zuführbar sind, dadurch gekennzeichnet, daß die Steuer-/Recheneinheit (28) mit einem elektrisch steuerbaren Luftdruckregler (26) und mit einem elektrisch umschaltbaren Magnetventil (36) mit zwei Druckluftausgängen (41, 43) verbunden ist, dem die geregelte Druckluft von dem elektrisch steuerbaren Luftdruckregler (26) zuführbar ist und daß einer der Ausgänge (41) des Magnetventils (36) über ein pneumatisches Oderglied (42) mit der Bremse (10) für den Normalbetrieb und für geregelten Notstopp,der andere Ausgang (43) mit der Notbremse (11) und über das pneumatische Oderglied (42) ebenfalls mit der Bremse (10) verbunden ist, so daß im Normalbetrieb über das pneumatische Oderglied (42) die Bremse (10) und beim Notstopp die Bremse (10) und die Bremse (11) geregelt ansteuerbar sind.1.Device for regulating the tension of a print carrier web with an emergency stop device, in particular for web-fed rotary printing presses, with a roll carrier for receiving at least one material roll, in which the material roll can be braked with a control brake in normal operation and, in the event of danger or rapid stop, with an emergency brake, the Web tension is determined by scanning the position of a deflectable roller which is partially wrapped around by the print carrier web by means of a transducer in the form of electrical signals and the latter can be fed to a control / computing unit, characterized in that the control / computing unit (28) has an electrically controllable air pressure regulator (26) and is connected to an electrically switchable solenoid valve (36) with two compressed air outlets (41, 43), to which the regulated compressed air can be supplied by the electrically controllable air pressure regulator (26) and that one of the outputs (41) of the solenoid valve (36) practice he has a pneumatic OR element (42) with the brake (10) for normal operation and for a controlled emergency stop, the other output (43) with the emergency brake (11) and also via the pneumatic OR element (42) with the brake (10) , so that the brake (10) and the brake (10) and the brake (11) can be controlled in a controlled manner in normal operation via the pneumatic OR element (42). 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Bremsen (10, 11) in Form einer Kernbremse (8) mit mehreren Bremszangen ausgebildet sind, die unterschiedliche Reibwerte aufweisen.2. Device according to claim 1, characterized in that the brakes (10, 11) are designed in the form of a core brake (8) with a plurality of brake calipers which have different coefficients of friction. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Ausgang des elektrisch steuerbaren Luftdruckreglers (26) mit einem elektrisch umschaltbaren Magnetventil (31) mit zwei Druckluftausgängen (35, 35ʹ) verbunden ist, die für die Steuerung eines Rollenwechslers (1) mit zwei Materialrollen (4, 5) jeweils mit den zugeordneten nachfolgenden pneumatischen Steuerelementen (36, 36ʹ) verbunden sind.Device according to one of the preceding claims, characterized in that the outlet of the electrically controllable air pressure regulator (26) has an electrically switchable solenoid valve (31) with two compressed air outlets (35, 35ʹ) is connected, which are connected to the control of a reel changer (1) with two material reels (4, 5) each with the associated subsequent pneumatic control elements (36, 36ʹ). 4. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zwischen dem Ausgang (43) des Magnetventils (36) und der Bremse (11) für den gesteuerten Notstopp ein weiteres pneumatisches Oderglied (44) angeordnet ist, das bei Spannungsausfall oder beim Rollenwechsel (Restrollenbremsung) von einem weiteren elektrisch steuerbaren Magnetventil (38) mit Druckluft beaufschlagt wird, so daß bei Spannungsausfall oder Rollenwechsel über das pneumatische Oderglied (44) sowohl die Bremse (10) für den Normalbetrieb als auch die Bremse (11) für den Notstopp betätigbar sind, wobei das weitere Magnetventil (38) elektrisch mit der Steuer-/Recheneinheit (28) verbunden ist.4. Apparatus according to claim 1 or 2, characterized in that a further pneumatic OR element (44) is arranged between the output (43) of the solenoid valve (36) and the brake (11) for the controlled emergency stop, which in the event of a power failure or when changing roles (Residual roller braking) is acted upon by a further electrically controllable solenoid valve (38) with compressed air, so that both the brake (10) for normal operation and the brake (11) for the emergency stop can be operated in the event of a power failure or role change via the pneumatic OR element (44) are, the further solenoid valve (38) being electrically connected to the control / computing unit (28). 5. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die elektrisch umschaltbaren Magnetventile (31, 36, 38) Servomagnetventile sind.5. Device according to one of the preceding claims, characterized in that the electrically switchable solenoid valves (31, 36, 38) are servo solenoid valves. 6. Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der geregelte Ausgang des elektrisch steuerbaren Luftdruckreglers (26) mindestens 0,5 bar beträgt.6. Device according to one of the preceding claims, characterized in that the regulated output of the electrically controllable air pressure regulator (26) is at least 0.5 bar.
EP87100881A 1986-03-12 1987-01-22 Device for adjusting the tension of a web with an emergency stop device Expired EP0236702B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3608182 1986-03-12
DE19863608182 DE3608182A1 (en) 1986-03-12 1986-03-12 DEVICE FOR REGULATING THE TENSION OF A PRESSURE CARRIER RAIL WITH AN EMERGENCY STOP DEVICE

Publications (2)

Publication Number Publication Date
EP0236702A1 true EP0236702A1 (en) 1987-09-16
EP0236702B1 EP0236702B1 (en) 1988-12-28

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ID=6296135

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EP87100881A Expired EP0236702B1 (en) 1986-03-12 1987-01-22 Device for adjusting the tension of a web with an emergency stop device

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US (1) US4709872A (en)
EP (1) EP0236702B1 (en)
JP (1) JP2553069B2 (en)
DE (1) DE3608182A1 (en)

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EP0312868A2 (en) * 1987-10-13 1989-04-26 SANPACK-GESELLSCHAFT LOHSS & CO. (GMBH & CO.) Method and device for wrapping goods with a film
EP1004528A1 (en) * 1998-11-25 2000-05-31 Kabushiki Kaisha Tokyo Kikai Seisakusho Tension control device for paper web in a rotary printing machine
WO2015000558A1 (en) * 2013-07-01 2015-01-08 Bobst Mex Sa Device for braking a reel of tape

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DE3822497A1 (en) * 1987-12-02 1989-10-19 Kotterer Grafotec DEVICE FOR PREVENTING MACHINE DAMAGE
DE4039108C1 (en) * 1990-12-07 1992-04-16 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
DE4312534A1 (en) * 1993-04-16 1995-01-05 Bhs Corr Masch & Anlagenbau Device for regulating the web tension regulation of a material web, especially of a paper web
DE4418729C2 (en) * 1993-06-26 1996-07-04 Mayer Textilmaschf Device for regulating the thread tension in a creel
JP2829853B2 (en) * 1997-01-24 1998-12-02 株式会社東京機械製作所 Remaining paper winding device
DE19722243C2 (en) * 1997-05-28 1999-12-16 Roland Man Druckmasch Drive of a rotary printing machine for multi-web operation
JP3394931B2 (en) * 1999-12-22 2003-04-07 株式会社東京機械製作所 Winding paper braking device
US6293192B1 (en) * 2000-04-03 2001-09-25 Norman C. Bartlett Newsprint core brake system for newspaper presses
EP1158092B1 (en) * 2000-05-24 2006-09-06 Voith Paper Patent GmbH Drying section
US6547707B2 (en) * 2001-01-10 2003-04-15 Heidelberger Druckmaschinen Ag Strain control in an infeed of a printing machine
JP5340218B2 (en) * 2010-04-22 2013-11-13 キヤノン株式会社 Printing apparatus and sheet processing apparatus
DE112010006036B4 (en) * 2010-11-30 2018-07-26 Toshiba Mitsubishi-Electric Industrial Systems Corporation Lead wire extraction means
DE102012001816B4 (en) * 2012-01-31 2013-09-05 Multivac Sepp Haggenmüller Gmbh & Co. Kg Packaging machine with unwinding device with axial adjustment
WO2016036640A1 (en) * 2014-09-02 2016-03-10 The Montalvo Corporation Self-contained tension control system
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DE2344591A1 (en) * 1972-09-11 1974-03-28 Wifag Maschf DEVICE FOR REGULATING THE WEB TENSION WHEN UNROLLING THE MATERIAL WEB FROM ROLLS
DE2843190A1 (en) * 1978-10-04 1980-04-10 Weyland Kg Gustav Pneumatic brake control for regulating tension - uses adjustable tensioning regulator made as pressure reducing valve subject to primary pressure
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Cited By (5)

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EP0312868A2 (en) * 1987-10-13 1989-04-26 SANPACK-GESELLSCHAFT LOHSS & CO. (GMBH & CO.) Method and device for wrapping goods with a film
EP0312868A3 (en) * 1987-10-13 1989-08-30 SANPACK-GESELLSCHAFT LOHSS & CO. (GMBH & CO.) Method and device for wrapping goods with a film
EP1004528A1 (en) * 1998-11-25 2000-05-31 Kabushiki Kaisha Tokyo Kikai Seisakusho Tension control device for paper web in a rotary printing machine
WO2015000558A1 (en) * 2013-07-01 2015-01-08 Bobst Mex Sa Device for braking a reel of tape
US10093506B2 (en) 2013-07-01 2018-10-09 Bobst Mex Sa Braking device for a tape reel

Also Published As

Publication number Publication date
DE3608182A1 (en) 1987-10-01
EP0236702B1 (en) 1988-12-28
JP2553069B2 (en) 1996-11-13
DE3608182C2 (en) 1988-12-15
US4709872A (en) 1987-12-01
JPS62218352A (en) 1987-09-25

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