EP1947040A1 - Sheet printing machine - Google Patents
Sheet printing machine Download PDFInfo
- Publication number
- EP1947040A1 EP1947040A1 EP08033502A EP08033502A EP1947040A1 EP 1947040 A1 EP1947040 A1 EP 1947040A1 EP 08033502 A EP08033502 A EP 08033502A EP 08033502 A EP08033502 A EP 08033502A EP 1947040 A1 EP1947040 A1 EP 1947040A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- measuring
- space
- printing machine
- fed printing
- 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.)
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Classifications
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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
- 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
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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
- B65H2220/00—Function indicators
- B65H2220/02—Function indicators indicating an entity which is controlled, adjusted or changed by a control process, i.e. output
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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
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/50—Occurence
- B65H2511/52—Defective operating conditions
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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
- B65H2551/00—Means for control to be used by operator; User interfaces
- B65H2551/20—Display means; Information output means
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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
- B65H2553/00—Sensing or detecting means
- B65H2553/20—Sensing or detecting means using electric elements
- B65H2553/23—Capacitive detectors, e.g. electrode arrangements
Definitions
- the invention relates to a sheet-fed printing machine according to the preamble of claim 1.
- sheet-fed printing presses are held ready as a plant stack, with sheets are individually lifted by means of suction devices from the investment pile and stored on a trained as Anlegeisch docking device.
- About the feed table the sheets are fed to a sheet feeding the sheetfed presses.
- the raised from the investment pile sheets are fed through the feed table usually in shingled sheet as a scale flow of the sheet feeder.
- a false sheet may be a double sheet of two printed sheets positioned one above the other. If such a double sheet fed to the sheet-fed press, this can lead to damage of the same. The detection of false bows is therefore important.
- false arch should be understood to mean all printed sheets which deviate from a proper printed sheet with regard to at least one property.
- these can also be missing sheets, multiple sheets, oblique sheets, early sheets, late sheets, thick sheets or thin sheets. Missing sheets and multiple sheets, like double sheets, deviate from a proper sheet in terms of sheet counts.
- the position of the sheet deviates from that of a proper signature, as in the case of a slanted sheet. Thick sheet and thin sheet deviate from a proper signature in terms of the substrate thickness.
- double sheet control devices are used, which are based either on the principle of optical transmission or the absorption or reflection of ultrasonic waves.
- optical double sheet control devices or ultrasonic double sheet control devices require the presence of a single sheet for double sheet control. In a sheet-fed press, this condition is met only for a short time and only immediately before a mechanical access to the sheet by the sheet feeder of the sheet-fed press. It follows immediately that when a double sheet is identified by means of an optical double sheet control device or an ultrasonic double sheet control device, only a short time is available for the measurement.
- the present invention is based on the problem to provide a novel sheet-fed press with a capacitive false-arc sensor.
- This problem is solved by a sheet-fed printing machine according to claim 1.
- the sheet-fed printing press comprises at least one delimiting device which is arranged at least in sections in the condenser space, the or each delimiting device defining or delimiting a measuring space of the condenser space in which a homogeneous field line distribution prevails, and wherein the or each delimiting device guides printed sheets in such a way that the printed sheets are in the measuring room of the condenser room during the measurement.
- Fig. 1 shows a schematic representation of a false-arc sensor 20 of a sheet-fed press, wherein the false-arc sensor 20 comprises a measuring capacitor formed by two measuring electrodes 21 and 22.
- the measuring electrodes 21, 22 form a measuring capacitor and define a capacitor space 23 which extends between the two measuring electrodes 21, 22.
- the measuring electrode 21 is formed as a tip-shaped electrode and the measuring electrode 22 as a plate-shaped electrode, wherein field lines 24 between the two measuring electrodes 21, 22 extend.
- the field lines 24 extend in a section 25 of the condenser space 23 to form a homogeneous field line distribution in approximately parallel to each other, this section 25 being particularly suitable for measuring purposes.
- a false-arc sensor in a sheet-fed press such that it is assigned at least one delimiting device which is arranged at least in sections in the condenser space, the or each delimiting device defining or delimiting a measuring space of the condenser space which has a homogeneous field line distribution, wherein the or each limiting device pressure sheet leads such that the sheets are for measurement in the measuring space of the condenser space.
- the false-arc sensor 20 is associated with a limiting device 26 which extends completely in the condenser space 23 and defines as a subspace of the condenser space 23 a measuring space 27 in which a homogeneous field line distribution prevails.
- the sheet guiding device 26 ensures that printing sheets are located in the measuring space 27 of the condenser space 23 for the purpose of measuring.
- Fig. 3 shows the false-arc sensor 20 of the Fig. 1 with an alternative limiting device 28, wherein according to Fig. 3 the limiting device 28 only partially in the condenser space, which is formed between the two measuring electrodes 21 and 22, is arranged.
- the limiting device 28 may be a housing.
- the limiting device 28 is preferably non-conductive. However, it can also be conductive, namely when distances to the measuring electrode are sufficiently large.
- a particularly preferred embodiment of the invention shows Fig. 4 , wherein in the embodiment of the Fig. 4 the tip-shaped electrode 21 of the measuring capacitor is embedded in or enclosed by a limiting device 29.
- a measuring space 27 with a homogeneous field line distribution be defined or delimited, it also prevents the tip-shaped measuring electrode 21 from becoming dirty.
- the limiting device 29, in which the measuring electrode 21 of the measuring capacitor is embedded formed of a non-conductive material with a dielectric constant between 3 and 20, in particular between 10 and 15.
- the parallelization or homogenization of the field line course in the measuring space 27 can be supported.
- the limiting device 29 of Fig. 4 can also be the limiting device 26 of Fig. 2 be designed for parallelization or homogenization of the field line course in the measuring chamber 27 made of a non-conductive material with the above-specified dielectric constant.
- Fig. 5 a design of a false-arc sensor 30, in which a capacitor space 31 is defined by two tip-shaped measuring electrodes 32 and 33.
- section 34 of the condenser space 31 there is an approximately parallel course of the field lines 35 and thus a homogeneous field line profile, wherein the section 34 is suitable as a measuring space.
- the measuring chamber 34 For delimitation or definition of the measuring chamber 34 with respect to the condenser space 31 z.
- two limiting devices 26 are positioned, as in Fig. 2 in connection with the false-arc sensor 20 are shown.
- the measuring electrodes 21 and 32 and 33 may also be formed by a plurality of point-shaped measuring electrodes, which preferably have a constant distance from one another and from the opposite measuring electrode. As a result, the capacity of the respective measuring capacitor and the accuracy of the false-arch detection can be increased.
- Fig. 6 shows a concept of a false-arc sensor 36 of a sheet-fed press, in which a condenser space 37 is defined by a rod-shaped measuring electrode 38 and a plate-shaped measuring electrode 39.
- a section 40 of the condenser space 37 there is a substantially parallel course of field lines 41, wherein this section 40 is again suitable for the measurement and thus for false-arch detection.
- the section 40 can be delimited as a measuring chamber from the condenser space 37.
- the rod-shaped measuring electrode 38 in analogy to the embodiment of Fig. 4 to embed in a limiting device 29.
- a limiting device 28 may be used, which is arranged only in sections in the condenser space 37.
- the embodiments of the Fig. 1 to 6 each show false-arc sensors of a printing press, in which a capacitor space is provided by positioned at different levels measuring electrodes.
- Opposite shows Fig. 7 the concept of a false-arc sensor 42, in which measuring electrodes 43 and 44, between which field lines 45 extend, are positioned in a plane. In this way, an open measuring capacitor is created, with a section 46 being suitable as a measuring space for false-sheet detection.
- the measuring electrode 43 can enclose the measuring electrode 44 in an annular manner.
- the false-arc sensors can, as described below with reference to Fig. 8, 9 will be assigned to a side table 48 associated with a feed table 47.
- the contact table 47 preferably forms a plate-shaped measuring electrode of the false-arc sensor, a point-shaped measuring electrode 49 is positioned above a hold-down device 50 of the side pulling device 48. With the hold-down device 50 of the side pulling device 48, a side stop 54 cooperates when aligning the printed sheet.
- the hold-down device 50 of the limiting device 28 corresponds. Accordingly, the hold-down device 50 delimits from the condenser space defined by the measuring electrodes 47, 49 a measuring space in which a homogeneous field line distribution prevails, the hold-down device 50 holding printed sheets 51 for measurement in the measuring space delimited by the condenser space.
- the hold-down device 50 is adjustable relative to the feed table 47 in accordance with the double arrow 52 in order to adapt the dimension of the measuring space to the thickness of the printed sheet 51.
- a suction cup 53 is integrated, which sucks the sheet in the measurement of the same in the measuring space and so limited for a defined position of the sheet 51 in the false sheet detection within the of the hold-down device 50 of the side pulling 48 and the feed table 47 Measuring room ensures. As a result, the accuracy of the false arch detection can be increased.
- Fig. 10 to 13 Visualize embodiments of the invention, in which a false-arc sensor associated with a feed table conveyor 55, which has a feed roller 56 and a control roller 57 is assigned.
- the conveyor 55 is used to transport printed sheets 58 along an in Fig. 10 to 13 not shown, with printed sheets 58 are moved between the conveyor roller 56 and the control roller 57 through.
- 11 is connected to the clock roller 57, a first measuring electrode 58, the conveying roller 56 acts as a second measuring electrode 59.
- the clock roller 57 performs a clock movement in the sense of the double arrow 60, wherein according to the double arrow 61 coupled to the clock roller 57 measuring electrode 58 also performs the clock movement.
- the measuring electrode 58 is not coupled to the clock roller 57, but rather mounted on a fixed side stand 62. Accordingly, leads in the embodiment of Fig. 12 the measuring electrode 58, the clock movement of the clock roller 57 is not with, but is much the same as the Sidestand 62 stationary executed. Also in the embodiment of Fig. 12 the conveyor roller 56 serves as a second measuring electrode 59. It is also conceivable how Fig. 13 shows that the clock roller 57 serves as a first measuring electrode 58 and the conveying roller 56 as a second measuring electrode 59.
- the embodiments of the Fig. 10 to 13 is common that the clock roller 57 serves as a limiting device to define a measuring space in which there is a homogeneous field line distribution.
- the embodiments of the Fig. 10 to 13 about the advantage that serving as a limiting device clock roller 57 temporarily clamps the printed sheets 58 in the defined measuring space between the control roller 57 and conveyor roller 56 and thus ensures a defined position of the pressure sheet 58 to be measured in the measuring space. In this way, a particularly accurate false-arch detection can be realized.
- FIGS. 14 and 15 show FIGS. 14 and 15 , where in FIGS. 14 and 15 a false-arc sensor, which in principle like the false-arc sensor 42 of the Fig. 7 is constructed, is integrated in a suction device 63.
- the suction device 63 By means of the suction device 63, printed sheets can be lifted from a supply stack and conveyed in the direction of the feed table.
- the suction device 63 has a suction housing 64, to which a deformable suction lip 65 connects.
- the two measuring electrodes 43 and 44, which lie in one plane, are according to Fig. 15 provided with holes 66 through which a sheet 67 can be acted upon with suction.
- the suction device 63 forms here so to speak the limiting device.
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- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Controlling Sheets Or Webs (AREA)
Abstract
Description
Die Erfindung betrifft eine Bogendruckmaschine gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a sheet-fed printing machine according to the preamble of claim 1.
In Bogendruckmaschinen werden Druckbogen als Anlagestapel bereitgehalten, wobei Druckbogen mit Hilfe von Saugeinrichtungen einzeln vom Anlagestapel abgehoben und auf einer als Anlegtisch ausgebildeten Anlegeinrichtung abgelegt werden. Über den Anlegtisch werden die Druckbogen einer Bogenzuführeinrichtung der Bogendruckmaschinen zugeführt. Die vom Anlagestapel abgehobenen Druckbogen werden über den Anlegtisch in der Regel in geschuppter Bogenlage als Schuppenstrom der Bogenzuführeinrichtung zugeführt. Zur Gewährleistung eines ordnungsgemäßen Betriebs einer Bogendruckmaschine ist von Bedeutung, dass keine sogenannten Falschbogen auftreten. Bei einem Falschbogen kann es sich zum Beispiel um einen Doppelbogen aus zwei übereinander positionierten Druckbogen handeln. Wird ein solcher Doppelbogen der Bogendruckmaschine zugeführt, so kann dies zu Beschädigungen derselben führen. Das Erkennen von Falschbogen ist demnach von Bedeutung.In sheet-fed printing presses are held ready as a plant stack, with sheets are individually lifted by means of suction devices from the investment pile and stored on a trained as Anlegeisch docking device. About the feed table the sheets are fed to a sheet feeding the sheetfed presses. The raised from the investment pile sheets are fed through the feed table usually in shingled sheet as a scale flow of the sheet feeder. To ensure proper operation of a sheetfed press is important that no so-called false sheets occur. For example, a false sheet may be a double sheet of two printed sheets positioned one above the other. If such a double sheet fed to the sheet-fed press, this can lead to damage of the same. The detection of false bows is therefore important.
Unter dem Begriff Falschbogen sollen alle Druckbogen verstanden werden, die hinsichtlich wenigstens einer Eigenschaft von einem ordnungsgemäßen Druckbogen abweichen. Neben Doppelbogen können dies auch Fehlbogen, Mehrfachbogen, Schrägbogen, Frühbogen, Spätbogen, Dickbogen oder Dünnbogen sein. Fehlbogen und Mehrfachbogen weichen wie Doppelbogen hinsichtlich der Bogenanzahl von einem ordnungsgemäßen Druckbogen ab. Bei Frühbogen und Spätbogen weicht wie bei Schrägbogen die Position des Druckbogens von der eines ordnungsgemäßen Druckbogens ab. Dickbogen und Dünnbogen weichen hinsichtlich der Bedruckstoffstärke von einem ordnungsgemäßen Druckbogen ab.The term false arch should be understood to mean all printed sheets which deviate from a proper printed sheet with regard to at least one property. In addition to double sheets, these can also be missing sheets, multiple sheets, oblique sheets, early sheets, late sheets, thick sheets or thin sheets. Missing sheets and multiple sheets, like double sheets, deviate from a proper sheet in terms of sheet counts. In the case of early and late arches, the position of the sheet deviates from that of a proper signature, as in the case of a slanted sheet. Thick sheet and thin sheet deviate from a proper signature in terms of the substrate thickness.
In der Praxis kommen zur Identifikation von Doppelbogen in der Regel mechanisch arbeitende Vorrichtungen zum Einsatz, die den zu überprüfenden Schuppenstrom der Druckbogen mechanisch abtasten. Hierbei rollt die mechanische Doppelbogenkontrolleinrichtung auf den Druckbogen ab, wodurch auf den Druckbogen Laufmarkierungen verursacht werden können. Laufmarkierungen auf den Druckbogen beeinträchtigen die Qualität derselben und sind daher von Nachteil.In practice, for the identification of double sheets usually mechanically working devices are used, which are to be checked scale flow mechanically scan the printed sheet. In this case, the mechanical double sheet control device rolls onto the printed sheet, which can cause run marks on the printed sheet. Run marks on the printed sheet affect the quality of the same and are therefore disadvantageous.
Weiterhin kommen in der Praxis Doppelbogenkontrolleinrichtungen zum Einsatz, die entweder auf dem Prinzip der optischen Transmission oder der Absorption bzw. Reflexion von Ultraschallwellen beruhen. Optische Doppelbogenkontrolleinrichtungen bzw. Ultraschall-Doppelbogenkontrolleinrichtungen setzen jedoch zur Doppelbogenkontrolle das Vorhandensein eines Einzelbogens voraus. In einer Bogendruckmaschine wird diese Bedingung nur kurzzeitig und nur unmittelbar vor einem mechanischen Zugriff auf die Druckbogen durch die Bogenzuführeinrichtung der Bogendruckmaschine erfüllt. Daraus folgt unmittelbar, dass dann, wenn mithilfe einer optischen Doppelbogenkontrolleinrichtung oder einer Ultraschall-Doppelbogenkontrolleinrichtung ein Doppelbogen identifiziert wird, zur Messung lediglich eine kurze Zeit zur Verfügung steht.Furthermore, in practice double sheet control devices are used, which are based either on the principle of optical transmission or the absorption or reflection of ultrasonic waves. However, optical double sheet control devices or ultrasonic double sheet control devices require the presence of a single sheet for double sheet control. In a sheet-fed press, this condition is met only for a short time and only immediately before a mechanical access to the sheet by the sheet feeder of the sheet-fed press. It follows immediately that when a double sheet is identified by means of an optical double sheet control device or an ultrasonic double sheet control device, only a short time is available for the measurement.
Zur Vermeidung der obigen Nachteile der in der Praxis bislang eingesetzten Doppelbogenkontrolleinrichtungen werden nach dem Stand der Technik gemäß der
Da sämtliche Bedruckstoffe eine von Luft abweichende Dielektrizität aufweisen, ändert sich bei Hindurchbewegen des Schuppenstroms durch den Kondensatorraum des Messkondenstors die Kapazität desselben, wobei aus der Kapazitätsänderung prinzipiell Falschbogen identifiziert werden können.Since all printing materials have a dielectric different from air, changes in the flow of the scale through the condenser space of Messkondenstors the capacity of the same, whereby from the change in capacity in principle false bows can be identified.
Bei aus der Praxis bekannten, kapazitiven Falschbogensensoren von Bogendruckmaschinen besteht das Problem, dass dieselben lediglich eine relativ ungenaue Messung erlauben und demnach keine zuverlässige Falschbogendetektion möglich ist. Es besteht daher ein Bedarf an einer Bogendruckmaschine mit einer zuverlässigen Falschbogendetektion.When known from practice, capacitive false-arc sensors of sheet-fed presses, the problem is that they allow only a relatively inaccurate measurement and therefore no reliable false-sheet detection is possible. There is therefore a need for a sheet-fed printing press with a reliable false-sheet detection.
Hiervon ausgehend liegt der vorliegenden Erfindung das Problem zugrunde, eine neuartige Bogendruckmaschine mit einem kapazitiven Falschbogensensor zu schaffen. Dieses Problem wird durch eine Bogendruckmaschine gemäß Anspruch 1 gelöst. Erfindungsgemäß umfasst die Bogendruckmaschine mindestens eine Begrenzungseinrichtung, die zumindest abschnittsweise in dem Kondensatorraum angeordnet ist, wobei die oder jede Begrenzungseinrichtung einen Messraum des Kondensatorraums definiert bzw. abgrenzt, in welchem eine homogene Feldlinienverteilung herrscht, und wobei die oder jede Begrenzungseinrichtung Druckbogen derart führt, dass sich die Druckbogen bei der Messung im Messraum des Kondensatorraums befinden.On this basis, the present invention is based on the problem to provide a novel sheet-fed press with a capacitive false-arc sensor. This problem is solved by a sheet-fed printing machine according to claim 1. According to the invention, the sheet-fed printing press comprises at least one delimiting device which is arranged at least in sections in the condenser space, the or each delimiting device defining or delimiting a measuring space of the condenser space in which a homogeneous field line distribution prevails, and wherein the or each delimiting device guides printed sheets in such a way that the printed sheets are in the measuring room of the condenser room during the measurement.
Bei der erfindungsgemäßen Bogendruckmaschine ist eine zuverlässige Falschbogendetektion möglich.In the sheet-fed printing machine according to the invention, reliable false-sheet detection is possible.
Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ausführungsbeispiele der Erfindung werden, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:
- Fig. 1:
- eine schematisierte Darstellung einer ersten Form eines Falschbogensensors einer erfindungsgemäßen Bogendruckmaschine;
- Fig. 2:
- der Sensor gemäß
Fig: 1 mit einer ersten Begrenzungseinrichtung; - Fig. 3:
- der Sensor gemäß
Fig. 1 mit einer zweiten Begrenzungseinrichtung; - Fig. 4:
- der Sensor gemäß
Fig. 1 mit einer dritten Begrenzungseinrichtung; - Fig. 5:
- eine schematisierte Darstellung einer zweiten Form eines Falschbogensensors einer erfindungsgemäßen Bogendruckmaschine;
- Fig. 6:
- eine schematisierte Darstellung einer dritten Form eines Falschbogensensors einer erfindungsgemäßen Bogendruckmaschine;
- Fig. 7:
- eine schematisierte Darstellung einer vierten Form eines Falschbogensensors einer erfindungsgemäßen Bogendruckmaschine;
- Fig. 8:
- einen schematisierten Ausschnitt aus einer erfindungsgemäßen Bogendruckmaschine im Bereich einer einem Anlegtisch zugeordneten Seitenzieheinrichtung in Seitenansicht;
- Fig. 9:
- die Anordnung der
Fig. 8 in Vorderansicht; - Fig. 10:
- einen schematisierten Ausschnitt aus einer erfindungsgemäßen Bogendruckmaschine im Bereich einer einem Anlegtisch zugeordneten Fördereinrichtung in Seitenansicht;
- Fig. 11:
- eine erste Variante der Anordnung gemäß
Fig. 10 in Vorderansicht; - Fig. 12:
- eine zweite Variante der Anordnung gemäß
Fig. 10 in Vorderansicht; - Fig. 13:
- eine dritte Variante der Anordnung gemäß
Fig. 10 in Vorderansicht; - Fig. 14:
- einen schematisierten Ausschnitt aus einer erfindungsgemäßen Bogendruckmaschine im Bereich einer Saugeinrichtung; und
- Fig. 15:
- die Anordnung der
Fig. 14 in einer Ansicht von unten.
- Fig. 1:
- a schematic representation of a first form of a false-sheet sensor of a sheet-fed press according to the invention;
- Fig. 2:
- the sensor according to
Fig. 1 with a first limiting device; - 3:
- the sensor according to
Fig. 1 with a second limiting device; - 4:
- the sensor according to
Fig. 1 with a third limiting device; - Fig. 5:
- a schematic representation of a second form of a false-sheet sensor of a sheet-fed press according to the invention;
- Fig. 6:
- a schematic representation of a third form of a false-sheet sensor of a sheet-fed printing machine according to the invention;
- Fig. 7:
- a schematic representation of a fourth form of a false-sheet sensor of a sheet-fed press according to the invention;
- Fig. 8:
- a schematic section of a sheet-fed printing machine according to the invention in the region of a side table associated with a feed table in side view;
- Fig. 9:
- the arrangement of
Fig. 8 in front view; - Fig. 10:
- a schematic section of a sheet-fed printing machine according to the invention in the region of a feed table associated conveyor in side view;
- Fig. 11:
- a first variant of the arrangement according to
Fig. 10 in front view; - Fig. 12:
- a second variant of the arrangement according to
Fig. 10 in front view; - Fig. 13:
- a third variant of the arrangement according to
Fig. 10 in front view; - Fig. 14:
- a schematic section of a sheet-fed printing machine according to the invention in the region of a suction device; and
- Fig. 15:
- the arrangement of
Fig. 14 in a view from below.
Gemäß
Im Sinne der hier vorliegenden Erfindung wird vorgeschlagen, einen Falschbogensensor derart in eine Bogendruckmaschine zu integrieren, dass demselben mindestens eine Begrenzungseinrichtung zugeordnet ist, die zumindest abschnittsweise in dem Kondensatorraum angeordnet ist, wobei die oder jede Begrenzungseinrichtung einen Messraum des Kondensatorraums definiert bzw. abgrenzt, in welchem eine homogene Feldlinienverteilung herrscht, wobei die oder jede Begrenzungseinrichtung Druckbogen derart führt, dass sich die Druckbogen zur Messung im Messraum des Kondensatorraums befinden.For the purposes of the present invention, it is proposed to integrate a false-arc sensor in a sheet-fed press such that it is assigned at least one delimiting device which is arranged at least in sections in the condenser space, the or each delimiting device defining or delimiting a measuring space of the condenser space which has a homogeneous field line distribution, wherein the or each limiting device pressure sheet leads such that the sheets are for measurement in the measuring space of the condenser space.
So ist in der Ausführungsform der
Eine besonders bevorzugte Ausführungsform der Erfindung zeigt
Vorzugsweise ist die Begrenzungseinrichtung 29, in welche die Messelektrode 21 des Messkondensators eingebettet ist, aus einem nicht-leitenden Werkstoff mit einer Dielektrizitätskonstante zwischen 3 und 20, insbesondere zwischen 10 und 15, ausgebildet. Hierdurch kann die Parallelisierung bzw. Homogenisierung des Feldlinienverlaufs im Messraum 27 unterstützt werden. Ebenso wie die Begrenzungseinrichtung 29 der
Obwohl die Verwendung eines Falschbogensensors mit einer spitzenförmigen Messelektrode und einer plattenförmigen Messelektrode zur Begrenzung des Kondensatorraums 23 bevorzugt ist, sei an dieser Stelle darauf hingewiesen, dass auch andere Bauformen von Falschbogensensoren Verwendung finden können.Although the use of a false-arc sensor with a tip-shaped measuring electrode and a plate-shaped measuring electrode for limiting the
So zeigt
In den Ausführungsbeispielen der
Auch ist es möglich, die stabförmige Messelektrode 38 in Analogie zum Ausführungsbeispiel der
Die Ausführungsbeispiele der
Die Falschbogensensoren können, wie nachfolgend unter Bezugnahme auf
Im Ausführungsbeispiel der
Gemäß
Im Ausführungsbeispiel der
Den Ausführungsbeispielen der
Eine weitere Ausführungsform der hier vorliegenden Erfindung zeigen
Mit Hilfe der Saugeinrichtung 63 können Druckbogen von einem Anlegstapel abgehoben und in Richtung auf den Anlegtisch gefördert werden. Die Saugeinrichtung 63 verfügt über ein Sauggehäuse 64, an welches sich eine verformbare Sauglippe 65 anschließt. Die beiden Messelektroden 43 und 44, die in einer Ebene liegen, sind gemäß
Beim Ansaugen eines Druckbogens 67 kommt derselbe nahezu flächig an den Messelektroden 43, 44 zur Anlage, wodurch eine definierte Lage der zu vermessenden Druckbogen und damit genaue Falschbogendetektion realisiert werden kann. Die Saugeinrichtung 63 bildet hier sozusagen die Begrenzungseinrichtung.When a printing sheet 67 is sucked in, it comes into abutment almost flat against the measuring
- 2020
- FalschbogensensorFalse sheet sensor
- 2121
- Messelektrodemeasuring electrode
- 2222
- Messelektrodemeasuring electrode
- 2323
- Kondensatorraumcondenser space
- 2424
- Feldlinienfield lines
- 2525
- Abschnittsection
- 2626
- Begrenzungseinrichtunglimiting device
- 2727
- Messraummeasuring room
- 2828
- Begrenzungseinrichtunglimiting device
- 2929
- Begrenzungseinrichtunglimiting device
- 3030
- FalschbogensensorFalse sheet sensor
- 3131
- Kondensatorraumcondenser space
- 3232
- Messelektrodemeasuring electrode
- 3333
- Messelektrodemeasuring electrode
- 3434
- Abschnitt/MessraumSection / measuring room
- 3535
- Feldlinienfield lines
- 3636
- FalschbogensensorFalse sheet sensor
- 3737
- Kondensatorraumcondenser space
- 3838
- Messelektrodemeasuring electrode
- 3939
- Messelektrodemeasuring electrode
- 4040
- Abschnitt/MessraumSection / measuring room
- 4141
- Feldlinienfield lines
- 4242
- FalschbogensensorFalse sheet sensor
- 4343
- Messelektrodemeasuring electrode
- 4444
- Messelektrodemeasuring electrode
- 4545
- Feldlinienfield lines
- 4646
- Abschnitt/MessraumSection / measuring room
- 4747
- Anlegtischfeed table
- 4848
- SeitenzieheinrichtungPage puller
- 4949
- Messelektrodemeasuring electrode
- 5050
- NiederhalteeinrichtungHold-down device
- 5151
- Druckbogensheet
- 5252
- Doppelpfeildouble arrow
- 5353
- Saugtellersuction cups
- 5454
- Seitenanschlagside stop
- 5555
- FördereinrichtungConveyor
- 5656
- Förderwalzeconveyor roller
- 5757
- Taktrollesynchronizing roller
- 5858
- Messelektrodemeasuring electrode
- 5959
- Messelektrodemeasuring electrode
- 6060
- Doppelpfeildouble arrow
- 6161
- Doppelpfeildouble arrow
- 6262
- Seitenständerkickstand
- 6363
- Saugeinrichtungsuction
- 6464
- SauggehäuseSuction housing
- 6565
- Sauglippesqueegee
- 6666
- Lochhole
- 6767
- Druckbogensheet
Claims (17)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007003001A DE102007003001A1 (en) | 2007-01-20 | 2007-01-20 | Sheetfed |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1947040A1 true EP1947040A1 (en) | 2008-07-23 |
Family
ID=39111411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08033502A Ceased EP1947040A1 (en) | 2007-01-20 | 2008-01-08 | Sheet printing machine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1947040A1 (en) |
JP (1) | JP2008173977A (en) |
CN (1) | CN101284607A (en) |
DE (1) | DE102007003001A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012220200A1 (en) | 2012-05-02 | 2013-11-07 | manroland sheetfed GmbH | False sheet control of a sheetfed press |
JP2017088270A (en) * | 2015-11-04 | 2017-05-25 | ニスカ株式会社 | Sheet transport device, image formation device, and sheet post-processing device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3300320A1 (en) * | 1982-02-10 | 1983-09-01 | VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig | Monitoring and evaluation device for fault and multiple-sheet monitoring and measurement of thickness |
DE4003532A1 (en) * | 1989-02-15 | 1990-08-16 | Polygraph Leipzig | Capacitive double sheet control unit for printing machine - has measuring and counter electrodes laying on table, and evaluation circuit and electronic processing circuit |
JP2001240271A (en) * | 2000-03-03 | 2001-09-04 | Glory Ltd | Paper sheet discriminating device |
EP1403202A1 (en) * | 2002-09-26 | 2004-03-31 | Leuze electronic GmbH + Co. | Method for the operation of a sensor for detecting sheets in a sheet processing machine |
EP1886949A2 (en) | 2006-08-09 | 2008-02-13 | MAN Roland Druckmaschinen AG | Wrong sheet sensor of a machine manipulating printed sheets |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD279793A3 (en) * | 1986-07-08 | 1990-06-20 | Polygraph Leipzig | DEVICE FOR DETECTING MULTI-ARCH AND LAYER THICKNESS MONITORING |
DE4416287A1 (en) * | 1994-05-07 | 1995-11-09 | Heidelberger Druckmasch Ag | Device for generating signals on a suction head |
DE4431934B4 (en) * | 1994-09-08 | 2006-04-27 | Heidelberger Druckmaschinen Ag | Non-contact double sheet control device |
DE102005019617A1 (en) * | 2004-12-22 | 2006-07-06 | Man Roland Druckmaschinen Ag | Sheet processing device e.g. sheet-fed printing press has capacitive sensor, which is provided in the area of adjustment or guiding device whereby feed device, is designed as feed table, on which sheets e.g. printed sheets can be moved |
-
2007
- 2007-01-20 DE DE102007003001A patent/DE102007003001A1/en not_active Withdrawn
-
2008
- 2008-01-08 EP EP08033502A patent/EP1947040A1/en not_active Ceased
- 2008-01-18 CN CNA2008100035236A patent/CN101284607A/en active Pending
- 2008-01-18 JP JP2008009580A patent/JP2008173977A/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3300320A1 (en) * | 1982-02-10 | 1983-09-01 | VEB Kombinat Polygraph "Werner Lamberz" Leipzig, DDR 7050 Leipzig | Monitoring and evaluation device for fault and multiple-sheet monitoring and measurement of thickness |
DE4003532A1 (en) * | 1989-02-15 | 1990-08-16 | Polygraph Leipzig | Capacitive double sheet control unit for printing machine - has measuring and counter electrodes laying on table, and evaluation circuit and electronic processing circuit |
JP2001240271A (en) * | 2000-03-03 | 2001-09-04 | Glory Ltd | Paper sheet discriminating device |
EP1403202A1 (en) * | 2002-09-26 | 2004-03-31 | Leuze electronic GmbH + Co. | Method for the operation of a sensor for detecting sheets in a sheet processing machine |
EP1886949A2 (en) | 2006-08-09 | 2008-02-13 | MAN Roland Druckmaschinen AG | Wrong sheet sensor of a machine manipulating printed sheets |
Also Published As
Publication number | Publication date |
---|---|
CN101284607A (en) | 2008-10-15 |
JP2008173977A (en) | 2008-07-31 |
DE102007003001A1 (en) | 2008-07-24 |
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