EP1172317A2 - Dispositif de contrôle pour l'alimentation de feuilles à une machine à traiter des feuilles et procédé de contrôler un courant de feuilles et sa formation - Google Patents

Dispositif de contrôle pour l'alimentation de feuilles à une machine à traiter des feuilles et procédé de contrôler un courant de feuilles et sa formation Download PDF

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Publication number
EP1172317A2
EP1172317A2 EP01113648A EP01113648A EP1172317A2 EP 1172317 A2 EP1172317 A2 EP 1172317A2 EP 01113648 A EP01113648 A EP 01113648A EP 01113648 A EP01113648 A EP 01113648A EP 1172317 A2 EP1172317 A2 EP 1172317A2
Authority
EP
European Patent Office
Prior art keywords
sheet
monitoring device
arc
arc current
lever
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
EP01113648A
Other languages
German (de)
English (en)
Other versions
EP1172317A3 (fr
EP1172317B1 (fr
Inventor
Peter Kettenmann
Hans Butterfass
Carsten Huschle
Robert Müller
Thomas Dr. Wolf
Martin Reuter
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1172317A2 publication Critical patent/EP1172317A2/fr
Publication of EP1172317A3 publication Critical patent/EP1172317A3/fr
Application granted granted Critical
Publication of EP1172317B1 publication Critical patent/EP1172317B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B65H7/12—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 responsive to double feed or separation
    • 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
    • B65H2511/10—Size; Dimensions
    • B65H2511/13—Thickness
    • 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
    • B65H2511/20—Location in space
    • B65H2511/21—Angle
    • B65H2511/212—Rotary position
    • 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
    • B65H2511/20—Location in space
    • B65H2511/22—Distance
    • 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
    • B65H2511/20—Location in space
    • B65H2511/24—Irregularities, e.g. in orientation or skewness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/50—Occurence
    • B65H2511/51—Presence
    • 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
    • B65H2511/515—Absence
    • 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
    • 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
    • B65H2511/524—Multiple articles, e.g. double 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
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing
    • B65H2513/512—Starting; Stopping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • 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
    • B65H2553/26—Piezoelectric sensors
    • 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
    • B65H2553/60—Details of intermediate means between the sensing means and the element to be sensed
    • B65H2553/61—Mechanical means, e.g. contact arms
    • 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
    • B65H2553/80—Arangement of the sensing means
    • B65H2553/81—Arangement of the sensing means on a movable element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2555/00—Actuating means
    • B65H2555/10—Actuating means linear
    • B65H2555/14—Actuating means linear piezoelectric

Definitions

  • the invention relates to a monitoring device for sheet feeding, in particular scaled sheet feed, to a sheet processing machine, according to the preamble of Claim 1 and a method for controlling the arc current build-up, respectively Sheet current during its transport into a sheet processing machine, according to the Claims 18 and 20.
  • EP 0 242 622 B1 discloses a monitoring device of the type mentioned here which has a scanning roller arranged above a feed table, which with the help an electric stepper motor is displaceable in the direction of the feed table. With the Sampling roller is coupled to a sensor that always sends a signal to a control device transmitted when at least two sheets overlap. It has been shown that the Monitoring device can be used only to a limited extent and in cases where a dynamic and very precise displacement of the scanning roller is required, among other things can not be used due to the relatively slow stepper motor.
  • Another object of the invention is in providing a method of controlling the arc current in which a high Functional reliability can be guaranteed.
  • a monitoring device with the features of Claim 1 proposed.
  • This includes at least one above or below one Arcing current arranged sensing element which by means of an actuator in the direction of Arc stream and is movable away from the arc stream.
  • the monitoring device records is characterized in that the actuator has at least one piezo actuator or from this is formed. With the help of the piezo actuator is a dynamic, so very fast and precise displacement of the probe element possible, which in certain monitoring processes may be necessary.
  • the Piezo actuator constructed as in DE 196 46 511 C1 from marco System analyses und Anlagen GmbH, their content in terms of structure and function of the piezo actuator is made the subject of this description.
  • the piezo actuator has a base body which has a stacked structure constructed from ceramic lamellae.
  • this is one im Center of gravity of the base body, pivoting or tilting axis, so that the probe element directly or with the interposition of a transmission gear in Direction of the arc flow or a base over which the arc flow is transported, and is displaceable in the opposite direction.
  • a method having the features of claim 18 is also used to achieve the object proposed in which to control the arc current build-up or At least sheet current during its transport into a sheet processing machine a sensing element is displaceable in the direction of a counter pressure element, via which the scaled or single-sheet flow, that is transported.
  • the process is characterized in that the sensing element is placed against the arc current, that is pressed with a defined force and this during its transfer into the Machine, for example a sheet-fed printing machine, is detected.
  • the sensing element depending on the current moment Arc current thickness always shifted relative to the arc current so that the contact pressure with which the probe element is pressed against the arc current, to a predeterminable value or is kept within a specifiable range of values.
  • the path is determined that the probe element compared to preferably fixed, for example formed by a feed table Counter pressure element is shifted.
  • This allows the thickness of the arc current to be very precise can be determined or measured so that double and missing sheets are no longer necessary can be recognized, which leads for example to the output of an error signal.
  • Furthermore can by means of the change in distance of the sensing element relative to the counter-pressure element including the respective current machine speed also early, late and diagonal bends are recognized.
  • the process is characterized by high accuracy and also has a high level of functional reliability. It is also particularly advantageous that due to the constant pressing force of the sensing element on the counter pressure element the measurement conditions are constant regardless of the respective arc current thickness. It is therefore an automation of the sheet or the Arc current thickness measurement and / or arc current monitoring possible.
  • the Contact pressure of the sensing element to the arc current is monitored and that when over or If an error signal is triggered below a limit value for the contact pressure, what for example, to visually indicate a fault or immediately to stop the Machine leads.
  • an error signal can also be output here as soon as the distance of the sensing element to the counter-pressure element a certain upper or lower Limit exceeded or fallen short of. So, for example, occurs within the Arc current a double arc, so that at this point the thickness of the arc current is increased to an impermissible level, the probe element is preferably, with the aid of a suitable one dynamic actuator from the counter pressure element so far that the contact pressure of the sensing element to the arc current remains at a constant value. Will the tactile element in this case, however, beyond a maximum permissible distance from the counterpressure element moves, a desired message takes the form of a signal.
  • Claim 20 is used to control the build-up of arc current or the arc stream during its conversion into an arc Machine provided that initially build up the shingled or single sheet having arc current is detected, that is, it is determined how the Arc current thickness changed. In a preferred embodiment, this is done at the beginning of the Arch transfer first placed the probe on the counter pressure element, i.e. in System brought and pressed with a defined force, for example around the zero point adjust and determine the machine vibrations. Then the arc flow into the transported between the counter pressure element and the sensing element formed nip, so that the probe element now with preferably defined, in particular constant, force on the Arc current is pressed.
  • a defined force for example around the zero point adjust and determine the machine vibrations.
  • the arc current detection Information is collected using a suitable device, for example a control and control device that determines the height profile contour of the arc current.
  • the Arc current height profile is determined by the different thickness of the arc current, which can be shingled and / or individual sheets arranged at a distance from one another having.
  • the probe element is removed from the Arc stream turned off, so spaced from the arc stream, and during the further Transfer of the arc current always in the direction of the arc current and in opposite direction, i.e. shifted away from the arc stream, that the clear distance between the probe element and the arc current is constant or substantially constant.
  • the probe element travels the arc current contour without contact, the Displacement movement of the probe element to set the constant distance of the Tactile element to the arc current depending on the machine speed.
  • the clear distance between the sensing element and the arc current is so small that if there is a double arc in the arc stream, there is a contact between the Double sheet and the tactile element comes.
  • This "collision" is different can be determined, for example by determining the when the double sheet is touched by the same force exerted on the feeler element. After detection of the double sheet, the a fault in the arc current, an error message is issued, what For example, the machine stops immediately.
  • Other disorders of the Arc currents are early and late arcs, which are contrary to that due to the height profile determined, idealized arc current too early or too late on the probe arrive and therefore due to the time of touching the probe element, which means a suitable facility can be easily monitored, as an early relationship Late arches can be recognized.
  • the feeler element is a function of the Machine speed is oscillatingly shifted around the sheet current without contact Monitor double or multiple sheets. That above or below the arc current arranged probe element is moved linearly or along a circular path section.
  • the sheet stream has spaced apart single sheets, provided that the Probe element in a first defined by the height profile of an error-free arc current End position in each between a previous arc and an immediate one immersed following arc formed space, that is, is moved into. If the Arc current is not error-free and, for example, an early, late or oblique arc has, the sensing element is pressed against the arc current, which for example by means of of a sensor system can be determined.
  • the probe element is in one the height profile of the fault-free arc flow defined first end position in each between the Trailing edge of a previous sheet and trailing edge of a subsequent sheet Recessed in the top of the arc stream. With a double or multiple sheet the probe element contacts the arc current, which leads to an error display.
  • the device 1 described below can be used both for monitoring a shingled stream as well as a single sheet having no further be used.
  • Figure 1 shows an embodiment of the device 1 for monitoring the scaled Sheet feed to a sheet processing machine, not shown, such as Press.
  • the monitoring device 1 has a rigid, stationary arrangement Carrier 3 on which an adjusting device 5 and here as a transmission gear Serving lever mechanism 7 housing 8 is attached.
  • the actuating device 5 has an actuator 9, which is formed by a piezo actuator 11 is.
  • the structure and function of the piezo actuator 11 is known, so in the following only shortly afterwards.
  • the piezo actuator 11 has a cuboid here Base body and is by appropriate electrical control by a perpendicular to 1, axis 13 extending clockwise and counterclockwise is defined tiltable.
  • the axis 13 lies in the center of gravity of the piezo actuator 11.
  • the lever mechanism 7 has a first lever 15 and a second lever 17 which are coupled to one another via an intermediate joint 19.
  • the one-piece second Lever 17 consists of a first partial lever 21 and a second partial lever 23, which have a Leaf spring 25 are interconnected.
  • the leaf spring 15 is thus in the second lever 17th integrated.
  • the first partial lever 21 has on its end opposite the leaf spring 25 the intermediate joint 19 on.
  • the second partial lever 23 has the leaf spring 25 on it opposite end of a sensing element 27, which is formed here by a scanning roller 29 is, which is held freely rotatable about an axis 31 on the second partial lever 23.
  • the piezo actuator 11 is electrically controlled about the axis 13 tilted, whereby the first lever 15 by a small amount in the direction of the double arrow 33 can be moved up or down. This movement is via the intermediate joint 19 translated to the second lever 17 or the first partial lever 21.
  • the Translated deflection of the first partial lever 21 is on the leaf spring 25 to the second
  • Sub-lever 23 forwarded whereby the distance X of the sensing roller 29 compared to a Backing element serving pad 35, for example from a feed table is formed, via which an arc flow not shown in Figure 1 in the direction of the arc processing machine is guided, is adjustable.
  • the piezo actuator 11 Tracer roller 29 with a defined force on the base 35 or transported over it Single sheet or shingled sheet stream can be pressed on.
  • the monitoring device 1 arranged above the counter-pressure element, that is, the base 35.
  • the Monitoring device is arranged below the counter pressure element.
  • the sensing roller 29 To the To engage the sensing roller 29 against the counter-pressure element, the sensing roller 29 must be vertical To be shifted upward while the one shown in Figure 1 Embodiment the downward movement of the feeler roller 29 in the vertical direction he follows.
  • the counter-pressure element is formed here by the base 35 purely by way of example. at another, not shown embodiment, the back pressure element can also from a roller or roller, a relatively taut conveyor belt or the like be educated.
  • the monitoring device 1 also has an inductive displacement measuring system 37 trained first sensor system that the second lever 17 and the is assigned to the first partial lever 21 and serves to position the second lever 17 relatively to the carrier 3 or to the base 35, so that an exact Positioning the lever 17 and thus adjusting the contact pressure of the feeler roller 29 on the Document 35 or one carried / transported over it Arc current is possible.
  • a second sensor system designed here as an inductive force measuring system 39 provided with the help of which the bending of the leaf spring 25 can be detected.
  • the degree the bending of the leaf spring 25 is thus a measure of the contact pressure of the feeler roller 29 the pad 35 or the one or more lying thereon or transported over it Arc.
  • the contact pressure determined by means of the force measuring system 39 is also a measure of the distance X of the feeler roller 29 from the base 35, since the distance X depends on the number of sheets located between the feeler roller 29 and the base 35 increased if a measurement with constant force is to take place.
  • the monitoring device 1 further comprises a control and not shown Control device which has a microcontroller and suitable software with the Help the scale structure and the sheet thickness / thickness can be determined automatically.
  • the Microcontroller is preferably integrated in the monitoring device 1, that is, it is mounted in or on the housing 8. Of course, the microcontroller can also be used as separate unit can be formed on a remote from the monitoring device 1 Place is arranged. With the control and regulation device that is also Position measuring system 37 and the force measuring system 39 connected. In addition, the electrical control of the piezo actuator 11 by means of the control and Control device are carried out.
  • the open-loop and closed-loop control device forms, together with the pushbutton element 27, the Actuator 9 and with the sensor systems 37, 39 an intelligent sensor, with its Help double, early, late, oblique and / or missing sheets can be determined and also a Measurement of the thickness of the arc current can be made.
  • FIG. 5 shows a section of an exemplary embodiment of the shingled sheet stream 61, which is transported in the direction of an arrow 63 over the pad 35.
  • the arc stream 61 has a double sheet 65, which is formed here from two sheets adhering to each other.
  • the feeler roller 29 When the feeler roller 29 is pressed against the sheet current with a defined force and the Arc current has a fault, for example this double arc 65, the Difference in thickness of the arc current by a deflection movement with the help of Leaf spring 25 spring-loaded sensing roller 29 compensated.
  • the change in contact pressure is included Can be determined with the aid of the force measuring system 39, so that a constant Contact force of the feeler roller 29 against the sheet current of the actuator 5, here the piezo actuator 11 is correspondingly electrically controlled, which leads to actuation of the lever mechanism 7 and thus to lift or - in the case of a missing sheet - to lower the feeler roller 29 leads to the pad 35.
  • the electromechanical monitoring device 1 enables a self-learning, automatic double sheet detection in the sheet scale or in a single sheet having arc current. Furthermore, a very small contact pressure of the sensing roller 29 on the Arc current possible, this using the piezo actuator 11 very quickly and accurately is adjustable. It should be noted that with the monitoring device 1 a packet, Double sheet and thickness control can be performed. It is a compact and space-saving design of the monitoring device 1 possible.
  • the Monitoring device 1 also has the advantage that it can also be used for thin sheets can be used.
  • the measuring range of the monitoring device 1 is preferably in one Range from 0 mm to 6 mm. There is a very high resolution in the micrometer range realizable.
  • Figure 2 shows greatly enlarged the intermediate joint 19 between the first lever 15 and the first partial lever 21.
  • the intermediate joint 19 has a defined pivot point 43 in order to the first partial lever 21 or the second lever 17 by an electrical Control of the piezo actuator 11 rotated relative to the first lever 15 or is pivoted.
  • FIG. 7 shows a further exemplary embodiment of the intermediate joint 19.
  • FIG. 3 shows the second lever 17 in the area of the leaf spring on a greatly enlarged scale 25. It can be seen that the leaf spring 25 is formed in that appropriately shaped Incisions 45 and 47 were made in the second lever 17.
  • the leaf spring 25 has a small thickness D, which can be less than 1 mm.
  • Figure 8 shows another Embodiment of the leaf spring 25.
  • FIG. 4 shows a diagram in which the time t in seconds is plotted on the abscissa axis and the thickness D of the layer located between the feeler roller 29 and the support 35, that is to say the distance X between the feeler roller and the support in millimeters, is plotted on the ordinate axis.
  • a first signal curve 49 and a dashed line indicate a first signal curve 49 and a second signal curve 51, which show an unfiltered signal or filtered signal that can be determined with the aid of an exemplary embodiment of the monitoring device 1.
  • the monitoring device 1 has a microcontroller and suitable software.
  • the microcontroller In order to be able to monitor the sheet current, the microcontroller only needs to be given a start signal and the machine speed must be entered.
  • the microcontroller monitors the machine interface and takes over the value for the measuring force, ie the force with which the feeler roller 29 is pressed against the support 35 or the feed table, when the sheet feed is started. Then, by means of electrical control of the piezo actuator 11, the feeler roller 29 is moved against the feed table surface until the force measuring system 37 determines or determines the predetermined contact pressure of the feeler roller 29 on the feed table.
  • the zero line 53 and the machine vibrations (P1) are determined until the first sheet arrives. This takes place here during the first two machine revolutions.
  • the monitoring device 1 determines the sheet thickness D B and forwards this as thickness information to the control and regulating device of the device 1.
  • the scale build-up (P4) is then detected. This measurement signal is filtered and fed to the control and regulation device. If the upper or lower limit 57 or 59 of the arc current thickness is exceeded or undershot, the solves
  • Monitoring device 1 an error signal. It becomes clear that even during of the shed structure, a double sheet or a missing sheet is recognized and as an error signal can be spent.
  • the scale structure i.e. the height of the arch scale
  • the sensing element 27 is at the beginning of the sheet transfer to the base 35th or the arc stream.
  • the arc current is thus detected touching, the contact pressure in particular during the build-up of the arches is kept at a constant value. From those determined by the arc current detection Information is then the height profile of the proper, that is, no double, Parcel, missing, early, late and / or inclined sheet current determined.
  • the touch element is removed from the Arc current turned off, that is in the embodiment shown in Figure 1 upwards moved away and always in the same direction during the further transfer of the arc current shifted to the arc stream and opposite direction that the clear distance preferably constant between the sensing element and the arc current, but at least in Is essentially constant.
  • the clocked displacement movement of the probe element relative compared to the arc flow this is done depending on the contour profile of the height profile the trouble-free arc current and depending on the machine speed.
  • FIG. 6 shows the height profile 67 of the section of the arc stream 61 shown in FIG. 5.
  • the arc stream 61 is under construction, as a comparison with FIG. 5 shows.
  • the arc stream 61 has a trouble-free, proper height profile.
  • a recess 73 is formed due to the overlap of the sheets, into which the sensing element is immersed during its oscillating up and down movement, so that the distance between the sensing element and the top of the Arc current is always constant both in the region of the recess 73 and in the region of the elevations 75, within which the arc current 61 has its greatest thickness.
  • section C there is the double sheet 65 (FIG. 5), as a result of which the sheet current thickness 61 is exactly one sheet thicker than in section B and in section D following section C. Since the oscillating movement of the probe element depends on the error-free Height profile (sections B and D) determined and its approach to the base is constant during the transport of the sheet flow, the probe in the area of the double sheet 65 automatically hits the sheet flow 61, either when immersed in the recess 73 between two sheets or in the area of the arc current in which it has its greatest thickness.

Landscapes

  • Controlling Sheets Or Webs (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP01113648A 2000-07-11 2001-06-19 Dispositif de contrôle pour l'alimentation en feuilles d'une machine à traiter des feuilles et procédé de contrôle de la formation d'un courant de feuilles Expired - Lifetime EP1172317B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10033638A DE10033638A1 (de) 2000-07-11 2000-07-11 Überwachungsvorrichtung für die Bogenzufuhr zu einer Bogen verarbeitenden Maschine und Verfahren zur Kontrolle des Bogenstromaufbaus des Bogenstroms
DE10033638 2000-07-11

Publications (3)

Publication Number Publication Date
EP1172317A2 true EP1172317A2 (fr) 2002-01-16
EP1172317A3 EP1172317A3 (fr) 2003-12-10
EP1172317B1 EP1172317B1 (fr) 2005-08-17

Family

ID=7648530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01113648A Expired - Lifetime EP1172317B1 (fr) 2000-07-11 2001-06-19 Dispositif de contrôle pour l'alimentation en feuilles d'une machine à traiter des feuilles et procédé de contrôle de la formation d'un courant de feuilles

Country Status (5)

Country Link
US (1) US6561509B2 (fr)
EP (1) EP1172317B1 (fr)
JP (1) JP2002087640A (fr)
AT (1) ATE302153T1 (fr)
DE (2) DE10033638A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1840061A1 (fr) * 2006-04-01 2007-10-03 MAN Roland Druckmaschinen AG Elément de guidage de feuille et de conduite de feuille actif
EP1840060A2 (fr) * 2006-04-01 2007-10-03 MAN Roland Druckmaschinen AG Dispositif de détection d'une pile
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JP4714595B2 (ja) * 2006-01-31 2011-06-29 リョービ株式会社 重畳検知装置
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EP1840060A2 (fr) * 2006-04-01 2007-10-03 MAN Roland Druckmaschinen AG Dispositif de détection d'une pile
EP1840060A3 (fr) * 2006-04-01 2009-06-17 manroland AG Dispositif de détection d'une pile
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CN104183053B (zh) * 2013-05-24 2016-08-17 北京嘉岳同乐极电子有限公司 厚度检测装置及其制造方法

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DE10033638A1 (de) 2002-01-24
DE50107099D1 (de) 2005-09-22
EP1172317A3 (fr) 2003-12-10
ATE302153T1 (de) 2005-09-15
US6561509B2 (en) 2003-05-13
US20020060420A1 (en) 2002-05-23
EP1172317B1 (fr) 2005-08-17
JP2002087640A (ja) 2002-03-27

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