EP1892086B1 - Réglage de position sur un revêtement de sol doté d'un traitement d'image - Google Patents

Réglage de position sur un revêtement de sol doté d'un traitement d'image Download PDF

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Publication number
EP1892086B1
EP1892086B1 EP07015455.4A EP07015455A EP1892086B1 EP 1892086 B1 EP1892086 B1 EP 1892086B1 EP 07015455 A EP07015455 A EP 07015455A EP 1892086 B1 EP1892086 B1 EP 1892086B1
Authority
EP
European Patent Office
Prior art keywords
positions
determined
deviation
valve
tube pieces
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.)
Active
Application number
EP07015455.4A
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German (de)
English (en)
Other versions
EP1892086A3 (fr
EP1892086A2 (fr
Inventor
Rüdiger Duwendag
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP1892086A2 publication Critical patent/EP1892086A2/fr
Publication of EP1892086A3 publication Critical patent/EP1892086A3/fr
Application granted granted Critical
Publication of EP1892086B1 publication Critical patent/EP1892086B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/006—Controlling; Regulating; Measuring; Safety measures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • B31B2150/0014—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing transversally to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
    • B31B70/85—Applying patches or flexible valve inserts, e.g. applying film-like valves

Definitions

  • the invention relates to a method and apparatus for positioning valve or cover sheets relative to tubing components.
  • valve or cover sheets relative to components of tubing is particularly important in the manufacture of sacks and bags.
  • bags which are often provided for later filling with bulk materials, for example, with building materials such as cement, are usually prepared by a section of a hose is transported transversely to the tube axis, the end areas are reared, a valve sheet applied, for example glued Then, parts of the wound end portions are folded over to close the sack end, and finally bottom sheets are applied to the so formed bottoms.
  • one of the two ends can be formed in a different way, as it is often not necessary to provide a valve at both ends.
  • On ground cover sheets if the strength of a soil is already sufficient, can be dispensed with.
  • Such a bag is later filled by the or a valve.
  • the correct position of the valve or cover slip is important, but also the correct position of imprints, coatings such as glue jobs and also pre-breaks or creases that mark the later fold lines.
  • the production of such bags from pieces of tubing takes place in devices which are often referred to as Bodenlegevorraumen.
  • the hose pieces are transported transversely to its bag longitudinal axis and in the tube level usually horizontally in a transport device, wherein they are held immobile relative to the transport device.
  • the hose pieces are often clamped in the area of both ends between the belts of so-called Doppelbandreaem.
  • the valve leaflet and the ground cover sheets are transported by other transport devices to the hose pieces, this case also double conveyors or cylinders are provided, on the surfaces of the valve or bottom cover sheets are transported.
  • Such cylinders can be equipped with suckers or pliers.
  • the EP 0 571 728 also discloses a method and arrangement for monitoring deviations. Here are at least two successively recorded sub-images to form a picture, which is then used to test the soil.
  • the publication FR 2 638 675 In the production of plastic bags, determines the average deviation of the index marks of a web over a predetermined number of index marks from the target positions. This average deviation serves as the basis for corrections.
  • the object is achieved by a method according to claim 1 and a device according to claim 10.
  • images of the components of a plurality of pieces of tubing and / or of the aggregates acting on the pieces of tubing or the components applied to the piece of tubing are received. These images can be taken after various manufacturing steps during bag making. In this case, for example, each bag can be imaged or even every nth bag (n> 1). One or more images can be taken of a sack, depending on which positions are to be determined. So it may be useful to take pictures of the grooved hose pieces before the valve sheet is glued. After sticking the valve leaflet another picture can be taken.
  • the actual positions of the valve or cover sheets are. Imprints, coatings and / or embossing determined relative to a reference point of the hose piece.
  • a reference point is about the leading triangle tip, which arises when a flat lying piece of hose, which is transversely to a tube axis, but in the tube plane promoted, has been raised at its ends.
  • the mounted end is then parallel to a plane which is perpendicular to the tube plane and orthogonal to the tube axis.
  • the positions in the plane of the drawn-up end are preferably determined, the orthogonal positions to this plane are of secondary importance.
  • the difference between the actual positions and the associated setpoint positions is determined in order to obtain the deviations from the setpoint positions.
  • the calculated deviation is then followed by a value by which the valve or cover sheets, imprints, coatings and / or embossments are displaced relative to the constituents of pieces of tubing. This can be done by moving the aggregates that make the aforementioned additions or entries. Alternatively or additionally, the means that transport the pieces of hose, such as conveyor belts, can be moved. The means of transport can also be accelerated or decelerated if the determined deviation is in the transport direction of the hose pieces.
  • the value that follows from the determined deviation may be the determined deviation itself.
  • the deviation is determined on a piece of tubing to which, however, no influence can be taken.
  • the position changes thus affect the following pieces of hose.
  • a change in position can lead to larger deviations for the following pieces of tubing, ie reverse the desired effect.
  • a mean deviation is calculated by averaging over several recorded pieces of tubing.
  • the position of the relevant unit is changed, so that the relevant actual position is corrected by the calculated mean value. This correction can also be made if this mean value is within the product tolerance.
  • the position of the unit may not only mean the spatial position relative to the piece of hose, but in particular the phase position relative to the transport device which transports the pieces of hose.
  • the number of pieces of tubing over which the average value is formed is presumably the number of pieces of tubing transported during one revolution of a belt for transporting the pieces of tubing.
  • an average deviation is not calculated from the ascertained deviations, but a deviation function is determined.
  • This deviation function can be dependent on the time.
  • the function value of this function at a fixed point in time may be the deviation value with respect to a single bag or a single piece of tubing, but the deviation values of bags already measured or still to be measured may also be taken into account (moving averaging).
  • the function is also a periodic function.
  • a correction of the actual positions can then also be carried out periodically by means of a control and regulation unit, wherein the value which follows from the determined deviation and which is used for setting the positions, the function value of the function is at a certain time.
  • the recording of images is carried out by one or more cameras that may be attached to the machine frame of Bodenlegevorraum. These images taken by the cameras are transmitted to an evaluation and arithmetic unit which determines the positions of the respective reference point and the actual positions from the recorded images, calculates deviations from the desired positions and determines the mean values or functions. These mean values are then transmitted to a control unit, which activates actuators with which the layers of the imprints, coatings, embossings, valve leaflets and / or cover sheet labels can be changed or introduced into aggregates. These actuators may be, for example, motor-adjustable differentials, which can be adjusted during ongoing production, so that the correction of the positions can be done without interrupting production.
  • differential gears are usually used to change the phase angles and / or the rotational speeds of two driven by a drive components relative to each other.
  • a Bodenlegevorraum often a plurality of units is driven by a single drive, which drives a so-called vertical shaft, from each of which a torque is tapped for an aggregate.
  • the aforementioned process according to the invention can be carried out repeatedly during bag production in order to avoid waste as completely as possible.
  • Fig. 1 a shows a sequence of method steps for molding a valve bottom to a piece of hose.
  • Each method step is carried out in an assigned workstation, which are marked with 1 to 7.
  • the hose pieces 8 are conveyed by a double belt conveyor 9 to the individual workstations, the hose axis extending transversely to the conveying direction, but in the conveying plane.
  • the hose end is raised so that the now open bottom 10 is in a plane which is substantially orthogonal to the tube axis lies.
  • a valve sheet 11 is applied to the open floor 10.
  • another valve sheet 12 is applied.
  • areas of the bottom 10 are coated with glue in a manner not shown. Subsequently, in the workstation 5.
  • a ground cover sheet 13 is applied to the applied soil.
  • an imprint on the ground cover sheet is optionally printed in the workstation 7 by means of a format cylinder 14.
  • the format cylinder 14, not shown, carry raised clichés.
  • the double belt conveyor 9 comprises two circulating, endless conveyor belts 15, which are guided over deflection rollers 16.
  • the drive of the conveyor belts 15 is shown as an example for the lower conveyor belt 15.
  • the drive comprises a drive motor, not shown, which drives the drive pulley 18.
  • the conveyor belt 15 is guided over the pulleys 19, which are arranged so that the conveyor belt 15 wraps around the drive pulley 18 at least over an angle of 180 °.
  • the Fig. 2 shows various parameters that are taken into account in determining the position of the valve leaflet 11, the bottom cover sheet 13 and also the imprint 20 relative to the bottom 8 and are variable to minimize the manufacturing tolerances in the invention.
  • the reference points of the bottom 8 for the corresponding measurements for determining the positions are the tip 21 of the front floor triangle seen in the direction z and the center line 22 of the floor, which runs parallel to the running direction z.
  • the parameter a 1 denotes the distance of the front edge of the bottom cover sheet 13 from the top 21, the parameter a 2 the distance between the top 21 and the front edge of the imprint (in reading direction) and the parameter a 3 the distance of the rear edge of the valve sheet 11 from the top 21.
  • the phasing of the drives for the topsheet transport and valve lift conveyors are as well as the phase position of the form roller. 14 changed relative to the double belt conveyor.
  • all of these components are driven by a single drive, which drive drives a machine shaft from which torque is tapped to drive the individual transport devices.
  • a motor-adjustable superposition gear is provided, the servo motor is detectable and adjustable in its position. If some of the described components have their own drive motor, which operates independently of the machine shaft, the rotational position of this drive motor can be detected or regulated. This usually happens via known rotary encoders.
  • the parameters b 1 and b 2 denote the distance of the upper edge of the bottom cover sheet and the valve leaflet to the center line 22. These positions are adjusted by a motor-induced displacement of the transporting the bottom cover sheet or valve sheet relative to the double belt conveyor.
  • the same applies to the parameter b 4 which denotes the distance of the upper edge of the imprint to the center line 22, to the variation of which the format roller is displaced axially.
  • the parameter b 3 describes the width of the valve leaflet eleventh LIST OF REFERENCE NUMBERS 1 workstation 2 workstation 3 workstation 4 workstation 5 workstation 6 workstation 7 workstation 8th hose Connector 9 Double belt conveyors 10 raised soil 11 valve List 12 valve List 13 Bottom cover sheet 14 format cylinder 15 conveyor belt 16 idler pulley 17 role 18 sheave 19 disc 20 imprint 21 Top of the ground triangle 22 center line x Direction of the hose piece axis y Direction orthogonal to the transport direction z and to the direction of the tube axis y z Transport direction of the hose pieces

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  • Making Paper Articles (AREA)
  • Processing Or Creating Images (AREA)

Claims (12)

  1. Procédé pour la pose ou l'intégration dans la position adéquate de feuilles à valves ou de recouvrement (11, 12, 13), d'impressions (20), de revêtements et/ou de gaufrages sur ou dans des éléments de pièces de tubes (8), comprenant les étapes de processus suivantes :
    a) enregistrement d'images des éléments de pièces de tubes (8) munis de feuilles à valves ou de recouvrement (11, 12, 13), d'impressions (20), de revêtements et/ou de gaufrages, posés ou intégrés,
    b) détermination des positions de feuilles à valves ou de recouvrement (11, 12, 13), d'impressions (20), de revêtements et/ou de gaufrages par rapport à un point de référence des éléments de pièces de tubes (8),
    c) calcul de la divergence des positions déterminées par rapport à des positions de consigne, caractérisé en ce que
    les positions des feuilles à valves ou de recouvrement (11, 12, 13) et des éléments des pièces de tubes (8) sont modifiées d'une valeur qui résulte de la divergence qui a été déterminée,
    sachant que la valeur qui résulte de la divergence déterminée est calculée à partir d'une fonction qui décrit les divergences des positions déterminées par rapport aux positions de consigne en fonction du temps.
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    la valeur qui résulte de la divergence déterminée est déterminée par le fait qu'une divergence moyenne des positions déterminées par rapport aux positions de consigne est calculée par le biais de plusieurs positions déterminées.
  3. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la fonction est une fonction périodique.
  4. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    les positions des feuilles à valves ou de recouvrement (11, 12, 13) et des éléments des pièces de tubes (8) sont déterminées par au moins une caméra.
  5. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la divergence est déterminée par le biais du nombre des pièces de tubes (8) qui sont acheminées pendant une rotation de la courroie de transport (15) qui transporte les pièces de tubes (8).
  6. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la modification des positions est provoquée par un réglage différentiel effectué par un moteur.
  7. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    la détermination de la valeur qui résulte de la divergence déterminée est effectuée par une unité de calcul et de commande.
  8. Procédé selon la revendication précédente,
    caractérisé en ce que
    l'unité de calcul et de commande calcule aussi la divergence moyenne et/ou détermine la fonction qui décrit les divergences des positions déterminées par rapport aux positions de consigne en fonction du temps.
  9. Procédé selon la revendication précédente,
    caractérisé en ce que
    l`unité de calcul et de commande délivre des signaux de commande au réglage différentiel.
  10. Dispositif de positionnement d'ensembles pour la pose ou l'intégration de feuilles à valves ou de recouvrement (11, 12, 13), d'impressions (20), de revêtements et/ou de gaufrages sur ou à des éléments de pièces de tubes (8), muni
    - d'un dispositif permettant d'enregistrer des images de feuilles à valves ou de recouvrement (11, 12, 13), d'impressions (20), de revêtements et/ou de gaufrages et d'éléments de pièces de tubes (8),
    - d'une unité de calcul et de commande chargée de déterminer les positions relatives de feuilles à valves ou de recouvrement (11, 12, 13), d'impressions (20), de revêtements et/ou de gaufrages par rapport à des éléments de pièces de tubes (8), ainsi que de calculer la position relative à partir de plusieurs positions relatives, ou bien de déterminer une fonction de divergence,
    - d'une unité de mémoire dans laquelle les positions de consigne peuvent être sauvegardées, et
    caractérisé par
    un dispositif de réglage des positions relatives, sachant que la valeur qui résulte de la divergence déterminée est calculée à partir d'une fonction qui décrit les divergences des positions déterminées par rapport aux positions de consigne en fonction du temps.
  11. Dispositif selon la revendication 11,
    caractérisé en ce
    qu'une unité de commande est prévue, afin de recevoir de l'unité de calcul la différence entre la position relative moyenne et la position relative de consigne, et par laquelle le dispositif peut être alimenté en signaux de commande pour le réglage.
  12. Dispositif selon l'une des deux revendications,
    caractérisé en ce que
    le dispositif d'enregistrement d'images comprend un système de mesure optique, de préférence un système de caméras.
EP07015455.4A 2006-08-23 2007-08-07 Réglage de position sur un revêtement de sol doté d'un traitement d'image Active EP1892086B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006039564A DE102006039564B4 (de) 2006-08-23 2006-08-23 Positionsregelung an Bodenleger mit Bildverarbeitung

Publications (3)

Publication Number Publication Date
EP1892086A2 EP1892086A2 (fr) 2008-02-27
EP1892086A3 EP1892086A3 (fr) 2012-06-20
EP1892086B1 true EP1892086B1 (fr) 2016-02-24

Family

ID=38793017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07015455.4A Active EP1892086B1 (fr) 2006-08-23 2007-08-07 Réglage de position sur un revêtement de sol doté d'un traitement d'image

Country Status (4)

Country Link
US (1) US7702483B2 (fr)
EP (1) EP1892086B1 (fr)
JP (1) JP5588094B2 (fr)
DE (1) DE102006039564B4 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3820690A1 (fr) * 2018-07-09 2021-05-19 Windmöller & Hölscher KG Système pour le façonnage de morceaux de tuyau

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DE102008017444B4 (de) * 2008-04-03 2011-07-28 Windmöller & Hölscher KG, 49525 Vorrichtung und Verfahren zur Herstellung von Säcken aus Schlauchstücken
DE102008017441B4 (de) * 2008-04-03 2014-05-28 Windmöller & Hölscher Kg Verfahren und Anordnung zur Herstellung von Säcken aus Gewebematerial
DE102009047362B4 (de) 2009-11-25 2013-07-04 Windmöller & Hölscher Kg System und Verfahren zum Herstellen von Säcken oder Beuteln
DE102011003379A1 (de) 2011-01-31 2012-08-02 Windmöller & Hölscher Kg Verfahren zum Transport von Stapeln von Säcken oder Sackhalbzeugen von einer ersten Maschine zu einer zweiten Maschine sowie System, das eine erste Maschine und eine Transport und Speichervorrichtung enthält
DE102011003380B4 (de) 2011-01-31 2013-06-06 Windmöller & Hölscher Kg Verfahren und ein System zum Abarbeiten zumindest zweier aufeinander folgender Aufträge zur Herstellung von Säcken
DE102011003381A1 (de) 2011-01-31 2012-08-02 Windmöller & Hölscher Kg Verfahren und System zum Abarbeiten von Aufträgen zur Herstellung von Säcken
DE102019107459A1 (de) * 2018-06-28 2020-01-02 Windmöller & Hölscher Kg Werkzeugpositionierung

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3820690A1 (fr) * 2018-07-09 2021-05-19 Windmöller & Hölscher KG Système pour le façonnage de morceaux de tuyau

Also Published As

Publication number Publication date
DE102006039564B4 (de) 2013-01-17
EP1892086A3 (fr) 2012-06-20
EP1892086A2 (fr) 2008-02-27
DE102006039564A1 (de) 2008-02-28
JP5588094B2 (ja) 2014-09-10
US20080052025A1 (en) 2008-02-28
US7702483B2 (en) 2010-04-20
JP2008049707A (ja) 2008-03-06

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