EP0810971A1 - Jam monitoring device for a paper transporting device, in particular a paper web transporting device - Google Patents

Jam monitoring device for a paper transporting device, in particular a paper web transporting device

Info

Publication number
EP0810971A1
EP0810971A1 EP95942047A EP95942047A EP0810971A1 EP 0810971 A1 EP0810971 A1 EP 0810971A1 EP 95942047 A EP95942047 A EP 95942047A EP 95942047 A EP95942047 A EP 95942047A EP 0810971 A1 EP0810971 A1 EP 0810971A1
Authority
EP
European Patent Office
Prior art keywords
paper
roller
pressure roller
drive roller
sensors
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
EP95942047A
Other languages
German (de)
French (fr)
Other versions
EP0810971B1 (en
Inventor
Alfred Walz
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.)
Boewe Systec AG
Original Assignee
Boewe Systec AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Boewe Systec AG filed Critical Boewe Systec AG
Publication of EP0810971A1 publication Critical patent/EP0810971A1/en
Application granted granted Critical
Publication of EP0810971B1 publication Critical patent/EP0810971B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • 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
    • B65H7/06—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 responsive to presence of faulty articles or incorrect separation or feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2220/00—Function indicators
    • B65H2220/02—Function indicators indicating an entity which is controlled, adjusted or changed by a control process, i.e. output
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/52—Defective operating conditions
    • B65H2511/528—Jam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B65H2513/11—Speed angular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2551/00—Means for control to be used by operator; User interfaces
    • B65H2551/20—Display means; Information output means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2553/00—Sensing or detecting means
    • B65H2553/20—Sensing or detecting means using electric elements
    • B65H2553/24—Inductive detectors

Definitions

  • Jam monitoring device for a transport device for paper, in particular for a paper web is a jam monitoring device for a transport device for paper, in particular for a paper web.
  • the invention relates to a jam monitoring device for a transport device for paper, in particular for a paper web, with at least one drive roller and a freely rotatable pressure roller arranged parallel to the axis, the paper being passed between the two rollers and pressed by the pressure roller onto the drive roller.
  • paper processing machines e.g. an automatic account postprocessing system, which is connected to a laser printer, can be used in a wide variety of ways
  • the invention is therefore based on the object to provide a jam monitoring device for a transport device for paper, in particular for a paper web, of the type mentioned, which also enables the monitoring of an unperforated paper web and possibly also of successive individual paper sheets with a simple, inexpensive construction .
  • each of these rollers is assigned a stationary sensor, and in that an evaluation circuit is provided for comparing the signals emitted by both sensors per unit of time or deg Deviation from a predetermined ratio of the signals emitted by the sensors emits a fault signal.
  • the invention is based on the idea
  • the drive roller drives the paper web pressed against it by the pressure roller.
  • the pinch roller rolls on the paper web and is driven by the paper web at a peripheral speed which, apart from a negligible slip, corresponds to the peripheral speed of the drive roller.
  • the signals emanating from the sensor of the drive roller are assigned a specific number of signals from the sensor of the pressure roller, ie the signals are in a specific one Relationship to each other. Since this ratio corresponds to a predetermined ratio programmed in the evaluation circuit, the evaluation circuit does not emit a fault signal as long as the paper run runs smoothly.
  • the evaluation circuit recognizes this deviation from the predetermined ratio and emits a fault signal indicating the fault, which causes the transport device and, if appropriate, further upstream and downstream units to be stopped.
  • the traffic jam monitoring device is characterized by a particularly simple construction and enables cost-effective production. It is suitable for any width of paper web without adjustment. It can be used to monitor perforated paper webs as well as paper webs without a perforated edge. In a further embodiment of the invention, the jam monitoring of individual, successive sheets of paper is also possible. Advantageous embodiments of the invention are in the
  • FIG. 1 shows a side view of a first exemplary embodiment of the traffic jam monitoring device
  • FIG. 2 shows a plan view in the direction II of FIG. 1
  • Figure 3 shows another embodiment in side view.
  • the drive roller 1 of a transport device for a paper web 2 is driven by a motor 13 in the direction A indicated.
  • a freely rotatable pressure roller 3 is provided, which is arranged axially parallel to the drive roller 1.
  • the paper web 2 is passed between the two rollers 1, 3 and is pressed against the drive roller 1 by the pressure roller 3.
  • Guide rails or plates 4 prevent lateral deflection of the paper web 2 transversely to its running direction B.
  • a first sensor 5 is provided for monitoring the speed of the pressure roller 3.
  • This sensor 5 is expediently an inductive sensor which responds to individual metal bodies 6 which are arranged at equal circumferential angular intervals in the pressure roller 3. at
  • Rotation of the pressure roller 3 causes each metal body 6 to generate a signal which is output by the sensor 5 to an evaluation circuit 7.
  • the drive roller 1 is assigned a sensor 8, which cooperates with metal bodies 9 in a disc 10, which in turn is firmly connected to the shaft 11 of the drive roller 1.
  • the signals emitted by the second sensor B are also fed to the evaluation circuit 7.
  • Both roles 1, 3 are of the same size and the number of signals output by the two sensors 5, B to the evaluation circuit 7 is in a specific ratio, which corresponds to a predetermined ratio programmed in the evaluation circuit 7. The evaluation circuit therefore does not respond.
  • Fault signal indicating a fault. This fault signal stops the motor 13 and, if appropriate, other units connected upstream and downstream of the transp ⁇ rt device.
  • the invention is used to monitor individual successive sheets of paper. The one shown on the far left
  • Drive roller 1 and the pressure roller 3 assigned to it and the motor 13 correspond in structure and in their
  • the pressure roller 3 is also a sensor 5 and the drive roller 1 Assigned to sensor 8.
  • the signals emitted by both sensors 5, 8 are also fed to an evaluation circuit 7.
  • the above description therefore also applies analogously to the exemplary embodiment shown in FIG. 3. Since individual, successive paper sheets are to be monitored with this transport device shown in FIG. 3, further pressure rollers 3 'arranged at a distance from one another are provided in the paper travel direction B of the paper sheets, each of which is assigned a sensor 5'.
  • the signals emitted by the sensors 5 ' are also fed to the evaluation circuit 7.
  • the mutual center distance a of the pressure rollers 3 and 3 ' should be smaller than the format height of the paper sheets.
  • the drive roller 1 drives at least one endless
  • Transport belt 12 which is passed under the further pressure roller 3 '.
  • a support roller 14 supporting the transport belt 12 is arranged in the region of each further pressure roller 3 '. If a paper jam occurs between any adjacent pair of pressure rollers 3 or 3 'and the movement of the paper sheet passing under the relevant pressure roller 3 or 3' is slowed down or stopped, the speed of the corresponding pressure roller 3 or 3 also slows accordingly 'or it goes to zero. In contrast, the drive roller 1 and the transport belt 12 continue to be driven at operating speed. This changes the ratio of the decelerated or stopped by the sensor 8 and the sensor 5 or 5 '

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

In a jam monitoring device for a paper transporting device, the paper is transported between a driving roller (1) and a freely rotating pressure roller (3) whose axis is parallel to the axis of the driving roller (1). A stationary sensor (5, 8) is associated to each roller to monitor separately the speeds of the driving roller (1) and pressure roller (3). An evaluation circuit (7) is provided to compare the signals emitted by time or distance unit by both sensors. The evaluation circuit (7) emits a malfunction signal when the relation between the signals from the sensors (5, 8) deviates from a predetermined relation.

Description

Stauüberwachungseinrichtung für eine Transportvorrichtung für Papier, insbesondere für eine Papierbahn. Jam monitoring device for a transport device for paper, in particular for a paper web.
Die Erfindung betrifft eine Stauüberuiachungseinrichtung für eine Transportvorrichtung für Papier, insbesondere für eine Papierbahn, mit mindestens einer Antriebsrolle und einer achsparallel zu dieser angeordneten, frei drehbaren Andruckrolle, wobei das Papier zwischen beiden Rollen hindurchgeführt und von der Andruckrolle an die Antriebsrolle gedrückt wird. The invention relates to a jam monitoring device for a transport device for paper, in particular for a paper web, with at least one drive roller and a freely rotatable pressure roller arranged parallel to the axis, the paper being passed between the two rollers and pressed by the pressure roller onto the drive roller.
Bei papierverarbeitenden Maschinen, z.B. einer automatisehen Kontennachbearbeitungsanlage, die einem Laserdrucker nachgeschal tet ist, kann es aus den verschiedensten For paper processing machines, e.g. an automatic account postprocessing system, which is connected to a laser printer, can be used in a wide variety of ways
Gründen zu einem Papierstau kommen. Um hierbei Schaden zu vermeiden, kommt es darauf an, einen Papierstau sofort zu erkennen und dann die Maschine zu stoppen. Bei einer bisher bekannten Stauüberwachungseinrichtung erfolgt die Überwachung einer an ihrem Rand gelochten Papierbahn durch Überwachung des Lochrandes mittels einer in diesem Bereich angeordneten Lichtschranke. Denn deren Lichtstrahl infolge eines Papierstaus nicht mehr in regelmäßigen Abständen unterbrochen wird, bewirkt die Lichtschranke ein Stillsetzen der Maschine. Eine solche Stauüberwachungseinrichtung ist jedoch nur für Papierbahnen geeignet, die einen seitlichen Lochrand aufweisen. Zur Führung einer solchen gelochten Papierbahn ist ein Traktor mit in die Löcher eingreifenden Stachelbändern erforderlich, wobei der gegenseitige Abstand der Stachelbänder wegen unterschiedlicher Papierbahnbrei ten brei tenverstellbar sein muß. Durch diesen Traktor verteuert sich die Überwachungseinrichtung. Da eine Papierbahn ohne seitlichen Lochrand mit der bekannten Stauüberwachungseinrichtung überhaupt nicht überwacht werden kann, ergibt sich der weitere Nachteil, daß in einem Bereich nach dem Abtrennen des Lochrandes keine Stauüberwachung mehr möglich ist Reasons for a paper jam. To avoid damage, it is important to immediately detect a paper jam and then stop the machine. In a previously known jam monitoring device, the monitoring of a paper web perforated at its edge is carried out by monitoring the edge of the hole by means of a light barrier arranged in this area. Because the light beam is no longer interrupted at regular intervals due to a paper jam, the light barrier causes the machine to stop. However, such a jam monitoring device is only suitable for paper webs that have a lateral hole edge. To guide such a perforated paper web, a tractor with engaging barbed ribbons is required, the mutual spacing of the barbed belts must be ten adjustable due to different Papierbahnbrei th. The monitoring device becomes more expensive due to this tractor. Since a paper web without a lateral hole edge cannot be monitored at all with the known jam monitoring device, there is the further disadvantage that in an area after the separation of the hole edge is no longer possible to monitor traffic jams
Der Erfindung liegt daher die Aufgabe zugrunde, eine Stauüberwachungseinrichtung für eine Transportvorri chtung für Papier, insbesondere für eine Papierbahn, der eingangs erwähnten Art zu schaffen, die bei einfachem, kostengünstigem Aufbau auch die Überwachung einer nicht gelochten Papierbahn und gegebenenfalls auch von aufeinanderfolgenden einzelnen Papierblättern ermöglicht. The invention is therefore based on the object to provide a jam monitoring device for a transport device for paper, in particular for a paper web, of the type mentioned, which also enables the monitoring of an unperforated paper web and possibly also of successive individual paper sheets with a simple, inexpensive construction .
Dies wird nach der Erfindung dadurch erreicht, daß zur getrennten Überwachung der Geschwindigkeiten von Antriebsrolle und Andruckrolle jeder dieser Rollen ein stationärer Sensor zugeordnet ist, und daß zum Vergleich der von beiden Sensoren pro Zeit- bzw. Degeinheit abgegebenen Signale eine Auswerteschaltung vorgesehen ist, die bei Abweichung von einem vorbestimmten Verhältnis der von den Sensoren ausgehenden Signale ein Störungssignal abgibt. This is achieved according to the invention in that for the separate monitoring of the speeds of the drive roller and pressure roller each of these rollers is assigned a stationary sensor, and in that an evaluation circuit is provided for comparing the signals emitted by both sensors per unit of time or deg Deviation from a predetermined ratio of the signals emitted by the sensors emits a fault signal.
Die Erfindung geht also von dem Gedanken aus, The invention is based on the idea
die Geschwindigkeit der Andruckrolle mittels eines the speed of the pinch roller by means of a
Sensors fortlaufend zu überwachen und mit der der Antriebsrolle zu vergleichen. Bei störungsfreiem Papiertranspαrt treibt die Antriebsrolle die von der Andruckrolle an sie angedrückte Papierbahn an. Die Andruckrolle rollt dabei auf der Papierbahn ab und wird durch die Papierbahn mit einer Umfangsgeschwindigkeit angetrieben, die abgesehen von einem zu vernachlässigenden Schlupf, der Umfangsgeschwindigkeit der Antriebsrolle entspricht. Bei störungsfreiem Papierlauf ist den von dem Sensor der Antriebsrolle ausgehenden Signalen eine bestimmte Anzahl von Signalen des Sensors der Andruckrolle zugeordnet, d.h. die Signale stehen in einem bestimmten Verhältnis zueinander. Da dieses Verhältnis einem in der Auswerteschaltung programmierten, vorbestimmten Verhältnis entspricht, gibt die Auswerteschaltung kein Störungssignal ab, solange der Papierlauf störungsfrei verläuft. Monitor the sensor continuously and compare it with that of the drive roller. In the case of trouble-free paper transport, the drive roller drives the paper web pressed against it by the pressure roller. The pinch roller rolls on the paper web and is driven by the paper web at a peripheral speed which, apart from a negligible slip, corresponds to the peripheral speed of the drive roller. In the case of trouble-free paper flow, the signals emanating from the sensor of the drive roller are assigned a specific number of signals from the sensor of the pressure roller, ie the signals are in a specific one Relationship to each other. Since this ratio corresponds to a predetermined ratio programmed in the evaluation circuit, the evaluation circuit does not emit a fault signal as long as the paper run runs smoothly.
Beim Papierstau wird jedoch die Bewegung der Papierbahn verlangsamt bzw. gestoppt. Dementsprechend verringert sich die Umfangs- bzw. Drehgeschwindigkeit der von der Papierbahn angetriebenen Andruckrolle bzw. geht sie auf Null, während sich die Antriebsrolle mit der vorgegebenen Betriebsdrehzahl weiterdreht. Mit der Verzögerung der Geschwindigkeit der Andruckrolle verringert sich die Anzahl der von ihrem zugeordneten Sensor abgegebenen However, when the paper is jammed, the movement of the paper web is slowed down or stopped. Accordingly, the peripheral or rotational speed of the pinch roller driven by the paper web decreases or goes to zero while the drive roller continues to rotate at the predetermined operating speed. As the speed of the pressure roller decelerates, the number of sensors emitted by its assigned sensor decreases
Signale und damit auch das Verhältnis zu den vom Sensor der Antriebsrolle abgegebenen Signale. Die Auswerteschaltung erkennt diese Abweichung von dem vorbestimmten Verhältnis und gibt ein die Störung anzeigendes Störungssignal ab, welches das Stillsetzen der Transportvαrrichtung und gegebenenfalls weiterer vor- und nachgeschal teter Aggregate bewirkt. Signals and thus also the relationship to the signals emitted by the sensor of the drive roller. The evaluation circuit recognizes this deviation from the predetermined ratio and emits a fault signal indicating the fault, which causes the transport device and, if appropriate, further upstream and downstream units to be stopped.
Die erfindungsgemäße Stauüberwachungseinrichtung zeichnet sich durch besonders einfachen Aufbau aus und ermöglicht eine kostengünstige Herstellung. Sie ist ohne Einstellarbeiten für jede Papierbahnbreite geeignet. Mit ihr können sowohl gelochte Papierbahnen als auch Papierbahnen ohne Lochrand überwacht werden. In weiterer Ausgestaltung der Erfindung ist auch die Stauüberwachung einzelner, aufeinanderfolgender Papierblätter möglich. Vorteilhafte Ausgestaltungen der Erfindung sind in den The traffic jam monitoring device according to the invention is characterized by a particularly simple construction and enables cost-effective production. It is suitable for any width of paper web without adjustment. It can be used to monitor perforated paper webs as well as paper webs without a perforated edge. In a further embodiment of the invention, the jam monitoring of individual, successive sheets of paper is also possible. Advantageous embodiments of the invention are in the
Unteransprüchen gekennzeichnet. Subclaims marked.
Die Erfindung ist in folgendem, anhand von in der Zeichnung dargestellten Ausführungsbeispielen, näher erläutert. E s z e i gen : The invention is explained in more detail below with reference to exemplary embodiments shown in the drawing. Show it :
Figur 1 eine Seitenansicht eines ersten Ausf ührungsbeispieles der Stauüberwachungseinrichtung, Figur 2 eine Draufsicht in Richtung II der Figur 1,1 shows a side view of a first exemplary embodiment of the traffic jam monitoring device, FIG. 2 shows a plan view in the direction II of FIG. 1,
Figur 3 eine weitere Ausführungsform in Seitenansicht. Figure 3 shows another embodiment in side view.
Die Antriebsrolle 1 einer Transportvorrichtung für eine Papierbahn 2 wird von einem Motor 13 in der angegebenen Richtung A angetrieben. Auf der anderen Seite der Papierbahn 2 ist eine frei drehbare Andruckrolle 3 vorgesehen, die achsparallel zur Antriebsrolle 1 angeordnet ist. Die Papierbahn 2 ist zwischen beiden Rollen 1, 3 hindurchgeführt und wird durch die Andruckrolle 3 an die Antriebsrolle 1 angedrückt. Hierdurch wird die Antriebskraft von der Antriebsrolle auf die Papierbahn 2 übertragen und die Papierbahn in Papierlaufrichtung B bewegt. Führungsschienen oder -platten 4 verhindern ein seitliches Ausweichen der Papierbahn 2 quer zu ihrer Laufrichtung B. The drive roller 1 of a transport device for a paper web 2 is driven by a motor 13 in the direction A indicated. On the other side of the paper web 2, a freely rotatable pressure roller 3 is provided, which is arranged axially parallel to the drive roller 1. The paper web 2 is passed between the two rollers 1, 3 and is pressed against the drive roller 1 by the pressure roller 3. As a result, the driving force is transmitted from the drive roller to the paper web 2 and the paper web is moved in the paper running direction B. Guide rails or plates 4 prevent lateral deflection of the paper web 2 transversely to its running direction B.
Zur Überwachung der Geschwindigkeit der Andruckrolle 3 ist ein erster Sensor 5 vorgesehen. Dieser Sensor 5 ist zweckmäßig ein Induktivgeber, der auf einzelne Metallkörper 6 anspricht, die in gleichen Umfangswinkelabständen in der Andruckrolle 3 angeordnet sind. BeiA first sensor 5 is provided for monitoring the speed of the pressure roller 3. This sensor 5 is expediently an inductive sensor which responds to individual metal bodies 6 which are arranged at equal circumferential angular intervals in the pressure roller 3. at
Drehung der Andruckrolle 3 bewirkt jeder Metallkörper 6 ein Signal, das vom Sensor 5 an eine Auswerteschaltung 7 abgegeben wird. In ähnlicher Weise ist der Antriebsrolle 1 ein Sensor 8 zugeordnet, der mit Metallkörpern 9 in einer Scheibe 10 zusammenwirkt, die ihrerseits mit der Welle 11 der Antriebsrolle 1 fest verbunden ist. Die vom zweiten Sensor B abgegebenen Signale werden ebenfalls der Auswerteschaltung 7 zugeführt. Bei störungsfreiem Papierlauf wird die Papierbahn 2 von der Antriebsrolle 1 angetrieben und die Papierbahn 2 Rotation of the pressure roller 3 causes each metal body 6 to generate a signal which is output by the sensor 5 to an evaluation circuit 7. Similarly, the drive roller 1 is assigned a sensor 8, which cooperates with metal bodies 9 in a disc 10, which in turn is firmly connected to the shaft 11 of the drive roller 1. The signals emitted by the second sensor B are also fed to the evaluation circuit 7. When the paper runs smoothly, the paper web 2 is driven by the drive roller 1 and the paper web 2
nimmt ihrerseits die Andruckrolle 3 mit. Bei störungsfreiem Papierlauf sind die Umfangsgeschwindigkeiten in turn takes the pinch roller 3. The circumferential speeds are when the paper runs smoothly
beider Rollen 1, 3 gleich groß und die Anzahl der von den beiden Sensoren 5, B an die Auswerteschaltung 7 abgegebenen Signale steht in einem bestimmten Verhältnis, welches einem vorbestimmten, in der Auswerteschaltung 7 programmierten Verhältnis entspricht. Deshalb reagiert die Auswerteschaltung nicht. Both roles 1, 3 are of the same size and the number of signals output by the two sensors 5, B to the evaluation circuit 7 is in a specific ratio, which corresponds to a predetermined ratio programmed in the evaluation circuit 7. The evaluation circuit therefore does not respond.
Tritt jedoch eine Störung des Papierlaufs ein, dann verlangsamt sich die Bewegung der Papierbahn 2 bzw. sie wird ganz gestoppt. Dementsprechend verringert sich auch die However, if the paper flow is disrupted, the movement of the paper web 2 slows down or it is stopped completely. Accordingly, the
Geschwindigkeit der von der Papierbahn 2 angetriebenen Speed of the paper web 2 driven
Andruckrolle 3, während sich die vom Motor 13 mit vorbestimmter Betriebsdrehzahl angetriebene Antriebsrolle 1 weiterdreht. Es verändert sich hierdurch das Verhältnis der von den Sensoren 5 und B pro Zeit- bzw. Wegeinheit abgegebenen Signale. Diese Abweichung vom vorbestimmten, programmierten Verhältnis wird von der Auswerteschaltung 7 festgestellt und diese erzeugt an ihrem Ausgang 7a ein die Pinch roller 3 while the drive roller 1 driven by the motor 13 at a predetermined operating speed continues to rotate. This changes the ratio of the signals emitted by sensors 5 and B per unit of time or distance. This deviation from the predetermined, programmed ratio is determined by the evaluation circuit 7 and this generates a at its output 7a
Störung anzeigendes Störungssignal. Durch dieses Störungssignal werden der Motor 13 und gegebenenfalls weitere, der Transpαrtvorrichtung vor- und nachgeschaltete Aggregate stillgesetzt. Fault signal indicating a fault. This fault signal stops the motor 13 and, if appropriate, other units connected upstream and downstream of the transpαrt device.
Die in Figur 3 dargestellte weitere Ausgestaltung der The further embodiment shown in FIG
Erfindung dient zur Überwachung einzelner aufeinanderfolgender Papierblätter. Die ganz links dargestellte The invention is used to monitor individual successive sheets of paper. The one shown on the far left
Antriebsrolle 1 und die ihr zugeordnete Andruckrolle 3 sowie der Motor 13 entsprechen im Aufbau und in ihrer Drive roller 1 and the pressure roller 3 assigned to it and the motor 13 correspond in structure and in their
Wirkungsweise den im Zusammenhang mit der Beschreibung der Figur 1 und 2 beschriebenen Teilen. Der Andruckrolle 3 ist ebenso ein Sensor 5 und der Antriebsrolle 1 ein Sensor 8 zugeordnet. Die von beiden Sensoren 5, 8 abgegebenen Signale werden ebenfalls einer Auswerteschaltung 7 zugeführt. Vorstehende Beschreibung trifft daher sinngemä auch auf das in Figur 3 gezeigte Ausführungsbeispiel zu. Da mit dieser in Figur 3 dargestellten TransportVorrichtung einzelne aufeinanderfolgende Papierblätter überwacht werden sollen, sind in Papierlaufrichtung B der Papierblätter weitere, in Abstand voneinander angeordnete, Andruckrollen 3' vorgesehen, denen jeweils ein Sensor 5' zugeordnet ist. Die von den Sensoren 5' abgegebenen Signal werden ebenfalls der Auswerteschaltung 7 zugeführt. Der gegenseitige Achsabstand a der Andruckrollen 3 bzw. 3' sollte kleiner sein als die Formathöhe der Papierblätter. Die Antriebsrolle 1 treibt mindestens einen endlosen Mode of operation of the parts described in connection with the description of Figures 1 and 2. The pressure roller 3 is also a sensor 5 and the drive roller 1 Assigned to sensor 8. The signals emitted by both sensors 5, 8 are also fed to an evaluation circuit 7. The above description therefore also applies analogously to the exemplary embodiment shown in FIG. 3. Since individual, successive paper sheets are to be monitored with this transport device shown in FIG. 3, further pressure rollers 3 'arranged at a distance from one another are provided in the paper travel direction B of the paper sheets, each of which is assigned a sensor 5'. The signals emitted by the sensors 5 'are also fed to the evaluation circuit 7. The mutual center distance a of the pressure rollers 3 and 3 'should be smaller than the format height of the paper sheets. The drive roller 1 drives at least one endless
Transportriemen 12 an, der unter der weiteren Andruckrolle 3' hindurchgeführt ist. Im Bereich jeder weiteren Andruckrolle 3' ist eine den Transportriemen 12 abstützend Stützrolle 14 angeordnet. Wenn zwischen irgendeinem benachbarten Paar von Andruckrollen 3 bzw. 3' ein Papierstau auftritt und hierdurch das unter der betreffenden Andruckrolle 3 oder 3' hindurchlaufende Papierblatt in seiner Bewegung verlangsamt oder gestoppt wird, dann verlangsamt sich dementsprechend auch die Geschwindigkeit der entsprechenden Andruckrolle 3 bzw. 3' bzw. sie geht auf Null. Demgegenüber werde die Antriebsrolle 1 und der Transportriemen 12 weiterhin mit Betriebsgeschwindigkeit angetrieben. Hierdurch verändert sich das Verhältnis der vom Sensor 8 und von dem Sensor 5 bzw. 5' der verlangsamten bzw. stillgesetztenTransport belt 12, which is passed under the further pressure roller 3 '. A support roller 14 supporting the transport belt 12 is arranged in the region of each further pressure roller 3 '. If a paper jam occurs between any adjacent pair of pressure rollers 3 or 3 'and the movement of the paper sheet passing under the relevant pressure roller 3 or 3' is slowed down or stopped, the speed of the corresponding pressure roller 3 or 3 also slows accordingly 'or it goes to zero. In contrast, the drive roller 1 and the transport belt 12 continue to be driven at operating speed. This changes the ratio of the decelerated or stopped by the sensor 8 and the sensor 5 or 5 '
Andruckrolle 3 bzw. 3' abgegebenen Signale. Die Auswerteschaltung 7 erkennt dies und setzt den Motor 13 still. Pressure roller 3 or 3 'emitted signals. The evaluation circuit 7 recognizes this and stops the motor 13.

Claims

Patentansprüche 1. Stauüberwachungseinrichtung für eine Transportvorrichtung für Papier, insbesondere für eine Papierbahn, mit mindestens einer Antriebsrolle und einer achsparallel zu dieser angeordneten, frei drehbaren Andruckrolle, wobei das Papier zwischen beiden Rollen hindurchgeführt und von der Andruckrolle an die Antriebsrolle gedrückt wird, dadurch gekennzeichnet, daß zur getrennten Überwachung der Geschwindigkeiten von Antriebsrolle (1) und Andruckrolle (3, 3') jeder dieser Rollen ein stationärer Sensor (5, 5', 8) zugeordnet ist, und daß zum Vergleich der von beiden Sensoren pro Zeit- bzw. Wegeinheit abgegebenen Signale eine Auswerteschaltung (7) vorgesehen ist, die bei Abweichung von einem vorbestimmten Verhältnis der von den Sensoren (5, 5', 8) ausgehenden Signale ein Störungssignal abgibt. 1. Jam monitoring device for a transport device for paper, in particular for a paper web, with at least one drive roller and an axially parallel to this, freely rotatable pressure roller, the paper being passed between the two rollers and pressed by the pressure roller to the drive roller, characterized in that that for the separate monitoring of the speeds of the drive roller (1) and pressure roller (3, 3 ') each of these rollers is assigned a stationary sensor (5, 5', 8), and that for comparison of the two sensors per unit of time or distance emitted signals an evaluation circuit (7) is provided which emits a fault signal in the event of a deviation from a predetermined ratio of the signals emitted by the sensors (5, 5 ', 8).
2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß mittels des Störungssignals die Transportvorrichtung gestoppt wird. 2. Device according to claim 1, characterized in that the transport device is stopped by means of the interference signal.
3. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß als Sensoren (5, 5', 8) Induktivgeber vorgesehen sind, die mit einzelnen Metallkörpern (6, 9) zusammenwirken, welche gegenüber den Drehachsen von Antriebsrolle (1) und Andruckrolle (3, 3') jeweils in gleichen Umfangswinkelabständen angeordnet sind und zusammen mit der Antriebsrolle (1) bzw. der Andruckrolle (3,3. Device according to claim 1, characterized in that there are provided as sensors (5, 5 ', 8) inductive sensors which cooperate with individual metal bodies (6, 9) which, relative to the axes of rotation of the drive roller (1) and pressure roller (3, 3 ') are each arranged at the same circumferential angular intervals and together with the drive roller (1) or the pressure roller (3,
3') rotieren. Einrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zur Überwachung von einzelnen Papierblättern außer der der Antriebsrolle (1) zugeordneten Andruckrolle (3) weitere in Papierl aufrichtung in Abstand (a) voneinander angeordnete Andruckrollen (3') vorgesehen sind, wobei der gegenseitige Achsabstand (a) der Andruckrollen (3, 3') kleiner ist als die Formathöhe der Papierblätter und jeder Andruckrolle (3, 3') ein Sensor (5, 5') zugeordnet ist. 3 ') rotate. Device according to claim 1 or 2, characterized in that for monitoring individual paper sheets, in addition to the pressure roller (3) assigned to the drive roller (1), further pressure rollers (3 ') are arranged in the paper direction at a distance (a) from one another, the mutual Center distance (a) of the pressure rollers (3, 3 ') is smaller than the format height of the paper sheets and each pressure roller (3, 3') is assigned a sensor (5, 5 ').
Einrichtung nach Anspruch 4 , dadurch gekennzeichnet, daß die Antriebsrolle (1) mindestens einen unter den Andruckrollen (3, 3') hindurchgeführten und an diesem anliegenden Transportriemen (12) antreibt und daß im Bereich jeder weiteren Andruckrolle (3') eine den Transportriemen abstützende Stützrolle (14) angeordnet ist. Device according to Claim 4, characterized in that the drive roller (1) drives at least one transport belt (12) which is guided under the pressure rollers (3, 3 ') and which bears against it, and in the region of each further pressure roller (3') which supports the transport belt Support roller (14) is arranged.
EP95942047A 1995-02-24 1995-12-21 Jam monitoring device for a paper transporting device, in particular a paper web transporting device Expired - Lifetime EP0810971B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19506463 1995-02-24
DE19506463A DE19506463C2 (en) 1995-02-24 1995-02-24 Jam monitoring device for a transport device for paper, in particular for a paper web
PCT/DE1995/001860 WO1996026147A1 (en) 1995-02-24 1995-12-21 Jam monitoring device for a paper transporting device, in particular a paper web transporting device

Publications (2)

Publication Number Publication Date
EP0810971A1 true EP0810971A1 (en) 1997-12-10
EP0810971B1 EP0810971B1 (en) 1998-12-02

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Application Number Title Priority Date Filing Date
EP95942047A Expired - Lifetime EP0810971B1 (en) 1995-02-24 1995-12-21 Jam monitoring device for a paper transporting device, in particular a paper web transporting device

Country Status (6)

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EP (1) EP0810971B1 (en)
JP (1) JPH11500397A (en)
CA (1) CA2212042A1 (en)
DE (1) DE19506463C2 (en)
ES (1) ES2126335T3 (en)
WO (1) WO1996026147A1 (en)

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US5827533A (en) * 1997-02-06 1998-10-27 Duke University Liposomes containing active agents aggregated with lipid surfactants
DE29802400U1 (en) * 1998-02-12 1999-06-10 Eduard Küsters Maschinenfabrik GmbH & Co. KG, 47805 Krefeld Pair of rollers
DE10129889A1 (en) 2000-07-14 2002-01-24 Heidelberger Druckmasch Ag Detecting paper strip break during transport through roller rotary printing machine
DE102004005041A1 (en) * 2004-02-02 2005-08-18 Eduard Küsters Maschinenfabrik GmbH Monitoring textile web passing through calender, measures and compares web entry- and exit velocities, stopping the machine on difference
JP2013018628A (en) * 2011-07-13 2013-01-31 Seiko Epson Corp Device and method for transporting roll-shaped medium, and printing apparatus

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See references of WO9626147A1 *

Also Published As

Publication number Publication date
CA2212042A1 (en) 1996-08-29
JPH11500397A (en) 1999-01-12
EP0810971B1 (en) 1998-12-02
ES2126335T3 (en) 1999-03-16
DE19506463A1 (en) 1996-08-29
WO1996026147A1 (en) 1996-08-29
DE19506463C2 (en) 1998-11-12

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