EP0557609B1 - Installation pour le contrÔle en ligne de découpes de boîtes - Google Patents

Installation pour le contrÔle en ligne de découpes de boîtes Download PDF

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Publication number
EP0557609B1
EP0557609B1 EP92121379A EP92121379A EP0557609B1 EP 0557609 B1 EP0557609 B1 EP 0557609B1 EP 92121379 A EP92121379 A EP 92121379A EP 92121379 A EP92121379 A EP 92121379A EP 0557609 B1 EP0557609 B1 EP 0557609B1
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EP
European Patent Office
Prior art keywords
ejector
blanks
belt
linear
conveying path
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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.)
Expired - Lifetime
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EP92121379A
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German (de)
English (en)
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EP0557609A1 (fr
Inventor
Fritz Kurandt
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System Kurandt GmbH
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System Kurandt GmbH
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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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • B65H29/62—Article switches or diverters diverting faulty articles from the main streams
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/006—Controlling; Regulating; Measuring; Improving safety

Definitions

  • the invention relates to a device for on-line control and for the automatic ejection of wrong and / or faulty folding box blanks in the production of folding box cartons according to the preamble of claim 1.
  • Folding boxes made of cardboard or similar material represent a significant share of the packaging materials on the market in the packaging industry. This is not only based on the food industry with its diverse carton designs or the electrical and electronic industry, but also to a particularly high degree on the pharmaceutical industry. Both those placed in glasses or other airtight containers and those in foil packaging are put on the market Pharmaceuticals are generally available in portions in folding box cartons, the imprints of which are immediately legible or provide information about the contents of the box in coded form.
  • the requirements for a large amount of information are particularly important for folding cartons for the pharmaceutical industry and are largely precisely defined by a large number of laws and government regulations .
  • the optical, mechanical and / or electronic monitoring means that are able to detect defective or incorrect production parameters or product components with as little delay as possible, in order to rectify any errors immediately or to eject faulty products from online production without interrupting production.
  • optoelectronic bar code readers, glue trace control detectors and similar monitors are integrated into a high-performance folder gluer, which is only part of the automatic production line. This monitors the multiple folding of the flat blank into a six-sided or versatile container and the final gluing for the permanent assembly to the desired container shape in each production step.
  • a so-called rotary ejector in the form of a turntable is known Folding carton gluing machines (DE-C-37 43 728).
  • this blank is detected by magnetically controlled switching rollers, taking into account the delay time or the number of boxes between recognition and the passage of the blank to be removed from the rotary ejector, fed to a rotating ejector disk and taken over after being taken along ejected an undetermined angle of rotation in the tangential direction. Since the detection detectors are installed very differently in relation to the ejector in the production process, the delay times between detection and activation of the ejection device must be set according to the respective arrangement.
  • the turntable of the known ejection device is arranged laterally to the conveying path of the blanks and aligned in their plane so that the peripheral region of the disc lies directly below or above the path of movement of the blanks along their conveying path or overlaps them.
  • the blanks run into the folding box gluing machine individually, that is to say at a predetermined distance.
  • the position of the blanks is defined by non-slip engagement between the upper endless belt and the lower endless belt of the conveyor line.
  • the blanks protrude on both sides of the belt conveyor, so that the wrong or faulty blank can be gripped during production by means of the mechanism of the rotary ejector.
  • the gripper is a friction roller that is activated when the wrong blank runs past the rotary plate of the rotary ejector, the edge of the blank onto the plate surface provided with a friction layer presses and pulls out the blank between the two endless belts of the conveyor line.
  • the friction roller When the friction roller is activated, the continuously rotating turntable thus detects a blank which is recognized as being defective at the moment of passing and converts its linear movement into the rotary movement of the turntable during production. However, this is only ensured if the box is held correctly during its lateral displacement. Otherwise, there can only be an undefined lateral shift without complete removal.
  • the rotational movement of the defective blank not only requires certain pressure and friction values, but also a distance between the successive blanks in the conveyor track, which must correspond at least to the difference between the diagonal length of the blank and its width. This places special demands on the separation of the blanks, ie the spacing of the individual blanks from one another, which lead to a reduction in the production output of the entire machine system.
  • the angle of rotation, over which the defective blank is carried by the rotary plate of the rotary ejector is not defined, since it depends not only on the size, but also on the surface quality and weight of the blank, which results in very different friction Driving forces and torques can result.
  • the uncontrolled discharge direction that cannot be prevented in this way often causes machine malfunctions, which can lead to a further reduction in the production output of the overall system.
  • the for taking a defective The required frictional connection between the activated friction roller and the turntable over different arc lengths, depending on the dimensioning of the blank, is only ensured for certain dimensioning areas in the blank dimensions and its box thickness, depending on the adjustment of the rotary ejector. It has also been shown that when the production speed is increased along the conveyor line, the blanks between the friction roller and the turntable are not always reliably grasped. Such blanks can then be partially moved and partially rotated from the ongoing production, so that ultimately there are malfunctions which result in the shutdown of the entire automated on-line system.
  • the present invention comes in, which is based on the object of specifying an ejector for at least partially automated on-line production systems for producing folding box cartons from corresponding blanks, in which any swiveling or deflecting or rotating movement of the one to be removed from the production line Cutting is avoided, so that the disadvantages caused thereby are eliminated and the previously required increased demands on the operating personnel of the machines with reliable sorting can be dispensed with.
  • the ejector according to the invention for blanks in the manufacture of folding box cartons only carries out translatory movements instead of the previously required deflection or pivoting movements with the blanks to be eliminated in each case, the distance between the blanks fed on the linear conveyor line can also be minimized in the scale flow and thus the production speed increase.
  • the blank is ejected in a controlled manner with a precisely defined ejection direction and removal speed via a linear conveyor in the given conveyor level.
  • the detection of defective blanks is independent of their thickness, their surface properties as well as their size and weight.
  • the trouble-free ejection is achieved according to the invention by the synchronization of the speed of the linear conveying path of the blanks along the production line on the one hand and the linear speed of the ejection device which conveys in the plane of the same to the direction of production on the other hand.
  • the coordination of the two speeds with one another is only dependent on the angle defined between the two linear movements in the same plane, as described above. Once the system has been set up, the angle is generally not changed.
  • cut pieces 4 for the production of folding box cartons are moved at a speed V 1 in the direction of the arrow in the conveying plane along a conveying path 3 in this exemplary embodiment, lying at a respective distance 5 from one another.
  • the usual production speeds for this are 300 to 600 m / min.
  • the conveyor section 3 consists of a double belt arrangement, that is to say two endless conveyor belts lying one above the other at a close spacing, which rotate at the same speed in the direction of the arrow and hold the individual blanks 4 in a defined manner by friction.
  • a fixed rail arrangement 9 with a conveyor belt 6 for removing defective blanks 4 'in the form shown is positioned in the conveying plane, the ejector belt moving in the direction of the arrow the speed V 2 moves.
  • This gripper mechanism (not shown in more detail in FIG. 1) detects the blank 4 'at the beginning of the linear ejector, which is arranged such that its area 10 adjacent to the conveying path 3 is flush below or above the edge area of the blanks 4, the conveying plane of the linear ejector 6 , 8, 9 lies in the conveyor plane of conveyor section 3.
  • the section overlapping in plan view between the area 10 of the linear ejector 6, 8 9 and the respective edge area of a blank 4 is designed in such a way that no contact disturbances for the blanks 4 can occur along the conveying direction of the on-line system. Only in the event that a blank is recognized as incorrect, defective, incorrect or incorrectly printed by one or more reporting detectors, not shown here, is a gripper mechanism 7, 8 activated at the moment this blank 4 'passes the linear ejector, which blank either indirectly pressed by friction on the area 10 or pushed further onto this area by linear movement until it is carried along in the direction of movement and in the same movement plane of the linear ejector with only translatory movement at the speed V 2 .
  • the conveyor belt 6 of the linear ejector thus rotates at a higher speed than the production speed specified by the conveyor section 3, depending on the angle of attack ⁇ .
  • the ejection speed is thus 1.4 times greater than the conveying speed of the blanks 4 along the production line.
  • the distance 5 of the individual blanks 4 from one another or, if appropriate, a given overlap distance in a stream of blanks can thus be completely independent of the ejection process, by means of which the production processes determining the separation can be minimized.
  • FIG. 2 and 3 show, for example, embodiments for possible ejectors of defective blanks 4 'from the conveyor section 3.
  • a plunger 7 which can be moved back and forth in translation in the direction of the double arrow, is activated when one is not
  • the measuring and testing device shown ie a suitable code reader, has previously recognized a faulty blank 4 'and a Corresponding signal for the actuation of the ram, taking into account the delay time between detection of the error and passing of the faulty blank on the linear ejector.
  • the shown activated, ie extended, position of the plunger 7 is at most only available for a fraction of the length of passage of a blank, calculated to the smallest possible blank length.
  • the plunger In the non-activated position, the plunger is withdrawn outside the range of movement of the cutting sequence.
  • the defective blank 4 ' which is pushed into the gripper region of the linear ejector by means of the plunger 7 is gripped by the latter and with the increased speed V 2 , which corresponds to the projection speed taking into account the angle ⁇ in the direction of the conveying movement of the speed of the conveying path 3, essentially in the Conveying level remaining, carried along and ejected exactly in the direction of the slide rail 9.
  • the plunger 7 thus pushes the defective blank out of the transport direction so that it inevitably runs into the laterally inclined ejection belt and is slid out of the rail 9 by friction with this belt.
  • the inlet section 9, ie the section 8 of the ejector belt 6 adjacent to the conveyor section 3, is designed to be pivotable, so that it can be moved in the direction of the blank 4 'and, as shown, away from it.
  • This pivotable section 8 is pivoted downward for the ejection of a defective blank 4 'until it is the blank between itself and the low-friction surface of the slide rails 9 or a corresponding guide plate jammed and thereby pulling the blank out of the conveyor section 3 by means of a force-locking coupling.
  • the linear conveyor consists of the endless belt 6 'rotating at the speed V 2 , which is driven by the motor 11, and the low-friction coated guide rail 9.
  • the linear conveyor can consist of two endless belts rotating at a close distance from one another, corresponding to the conveyor section 3, which according to FIG. 3 also consists of two endless belts 3 rotating synchronously at a close distance from one another.
  • the endless belts so to speak, clamp the blanks 4 between them.
  • Fig. 4 shows the linear conveyor designed according to the invention in a lateral top view in more detail.
  • the endless belt 6 ' which ejects a defective or faulty blank is therefore guided in the region of the pivotable section 8 according to FIG. 3 on the one hand around a folding roller 16 and on the other hand around a deflection roller assigned to the motor 11.
  • the lower run of the discharge belt 6 ' is defined in terms of position by means of a plurality of support rollers 21 arranged at a distance from one another. A distance can be set in a defined manner between the lower run and the slide or guide rail 9, the adjustment of which can be carried out as a function of the thickness of the blanks.
  • the surface of the slide rail 9 is treated in such a way that it permits as little friction as possible with the blank, while the surface of the ejection belt 6 'should have the highest possible coefficient of friction compared to the blank to be ejected.
  • the ejecting belt 6 'could advantageously be pre-tensioned via the tensioning roller 20, which is mounted on the free pivotable end of a tensioning lever 14 - in such a way that the folding roller 16 is held in tension in its two positions, namely a lower ejection position (not shown) and the illustrated inactive position is.
  • the folding roller 16 is fixedly connected to a pivot rod 15 by means of the folding lever 13 and can be pivoted together with the latter about a pivot point.
  • the pivoting process takes place by means of an electromagnet 17 via its actuating plunger 22.
  • a plunger roller 24 is mounted, which engages in a fork bearing of the free end of the pivot rod 15.
  • the stroke of the actuating plunger 22 for specifying the passive and the activated position of the folding lever 13 can be precisely specified by loosening a lock nut 18 by means of the adjusting screw 19.
  • the tension of the ejection belt 6 'set with the tensioning roller 20 must be increased above a maximum value to be applied to the output voltage again in the eject position.
  • the folding lever 13 and the rigidly connected to it, but pivotable about a common pivot pivot rod 15 are shown in Fig. 4 with dash-dotted lines in the position in which the ejector belt 6 'can be mounted or removed from the linear ejector without tension.
  • a cover 23 encloses the non-pivotable part of the linear ejector.
  • the electromagnet 17 is designed as a double magnet, ie return spring forces are not required, which leads to an additional reduction in the required switching times. These mechanical measures and the pulsed activation of the two electromagnets with a defined overvoltage (fast excitation) lead to very constant switching times in the ms range. In addition, the switching time is tracked exactly depending on the conveying speed by an electronic compensation circuit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Claims (9)

  1. Dispositif pour le contrôle en ligne et l'éjection automatique de flans pour boites pliantes mauvaises et/ou défectueuses lors de la fabrication de cartons pour boites pliantes, à l'aide d'opérations appropriées de pliage et de collage, et dans lequel au moins un éjecteur, qui est disposé latéralement par rapport à la section de convoyage et peut être amené à engrener avec le flan, peut être actionné par l'intermédiaire de détecteurs de signalisation, tel qu'un lecteur de code ou analogue, cet éjecteur éliminant respectivement le flan indésirable de la fabrication en cours le long d'une section de convoyage, qui déplace les flans ayant des dimensions éventuellement différentes, selon une succession dense ou bien selon une disposition en série à la manière des tuiles d'un toit, caractérisé en ce que le dispositif est un éjecteur linéaire (6), qui se déplace approximativement dans le plan d'entraînement en faisant un angle aigu de réglage (α) par rapport à la direction d'entraînement, la vitesse (V1), avec laquelle les flans (4) sont déplacés sur la section de convoyage (3), et la vitesse (V2), avec laquelle des flans (4') devant être éliminés sont éliminés par l'éjecteur linéaire (6), étant accordées l'une sur l'autre conformément à la relation V 1 = V 2 cos α.
    Figure imgb0007
  2. Dispositif selon la revendication 1, caractérisé en ce que l'éjecteur linéaire (6) est constitué par un convoyeur à bande, qui est disposé en étant aligné dans le plan de la section de convoyage (3) et peut être amené à engrener avec des flans (4) à l'intérieur de la section de convoyage (3), et possédant un coefficient de frottement élevé, et par un dispositif fixe à rail présentant un faible coefficient de frottement.
  3. Dispositif selon la revendication 1, caractérisé en ce que l'éjecteur linéaire possède un dispositif de préhension dans sa partie (10) voisine de la section de convoyage (3).
  4. Dispositif selon les revendications 1 et 2, caractérisé en ce qu'au moins l'entrée (8) du convoyeur à bande, qui est voisine de la section de convoyage (3), peut basculer en assumant des fonctions d'organes de préhension.
  5. Dispositif selon la revendication 1, caractérisé en ce que la section de convoyage (3) et/ou l'éjecteur linéaire (6) est constitué respectivement par deux convoyeurs à bande sans fin, qui sont superposés en étant séparés par une faible distance et reçoivent entre eux les flans (4,4').
  6. Dispositif selon la revendication 1, caractérisé en ce que sur le côté de la section de convoyage (3), qui est situé à l'opposé du dispositif de préhension, est prévu un poussoir (7), qui coopère avec cette section de convoyage.
  7. Dispositif selon les revendications 1 à 5, caractérisé en ce que la partie pivotante (8) formant éjecteur de flans indésirables (4') et la partie, qui exécute l'évacuation définie, de l'éjecteur linéaire (figure 4), sont entourées par une bande d'éjection (6').
  8. Dispositif selon les revendications 1 à 5 et 7, caractérisé en ce qu'une partie basculante (8) est constituée par un levier rabattable (13) qui peut être actionné par un électroaimant (17) et comporte un rouleau rabattable.
  9. Dispositif selon les revendications 1 à 5, 7 et 8, caractérisé en ce que la précontrainte de la bande d'éjection (6') et la distance entre la bande (6') et le rail formant glissière (9) sont réglables.
EP92121379A 1991-12-19 1992-12-16 Installation pour le contrÔle en ligne de découpes de boîtes Expired - Lifetime EP0557609B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4142051 1991-12-19
DE4142051 1991-12-19
US08/013,645 US5342278A (en) 1991-12-19 1993-02-04 Apparatus for the on-line control of folding box blanks

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EP0557609A1 EP0557609A1 (fr) 1993-09-01
EP0557609B1 true EP0557609B1 (fr) 1997-03-12

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DE102006021998A1 (de) * 2006-05-10 2007-11-15 Köra-Packmat Maschinenbau GmbH Vorrichtung und Verfahren zum Ausschleusen von Flachmaterialprodukten

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JP5173341B2 (ja) * 2007-09-26 2013-04-03 三菱重工印刷紙工機械株式会社 製函機の不良品除去装置および製函機
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US10322050B1 (en) 2012-01-10 2019-06-18 Alessio Pigazzi Method of securing a patient onto an operating table when the patient is in a position such as the Trendelenburg position and apparatus therefor including a kit
US8464720B1 (en) 2012-01-10 2013-06-18 Alessio Pigazzi Method of securing a patient onto an operating table when the patient is in the trendelenburg position and apparatus therefor including a kit
US10912699B2 (en) 2012-01-10 2021-02-09 Alessio Pigazzi Method of securing a patient onto an operating table when the patient is in a position such as the trendelenburg position and apparatus therefor including a kit
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WO2020132123A1 (fr) 2018-12-19 2020-06-25 Pearson Packaging Systems Procédé d'inspection et de montage de boîte non montée
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Publication number Priority date Publication date Assignee Title
DE102006021998A1 (de) * 2006-05-10 2007-11-15 Köra-Packmat Maschinenbau GmbH Vorrichtung und Verfahren zum Ausschleusen von Flachmaterialprodukten
DE102006021998B4 (de) * 2006-05-10 2008-01-31 Köra-Packmat Maschinenbau GmbH Vorrichtung und Verfahren zum Ausschleusen von Flachmaterialprodukten

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US5342278A (en) 1994-08-30
EP0557609A1 (fr) 1993-09-01

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