EP2338829B1 - Dispositif et procédé de fermeture de récipients à l'aide de mesures de distance - Google Patents

Dispositif et procédé de fermeture de récipients à l'aide de mesures de distance Download PDF

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Publication number
EP2338829B1
EP2338829B1 EP10195539.1A EP10195539A EP2338829B1 EP 2338829 B1 EP2338829 B1 EP 2338829B1 EP 10195539 A EP10195539 A EP 10195539A EP 2338829 B1 EP2338829 B1 EP 2338829B1
Authority
EP
European Patent Office
Prior art keywords
container
closing
distance
cap
closure
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.)
Not-in-force
Application number
EP10195539.1A
Other languages
German (de)
English (en)
Other versions
EP2338829A2 (fr
EP2338829A3 (fr
Inventor
Hartmut Davidson
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.)
Krones AG
Original Assignee
Krones 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 Krones AG filed Critical Krones AG
Publication of EP2338829A2 publication Critical patent/EP2338829A2/fr
Publication of EP2338829A3 publication Critical patent/EP2338829A3/fr
Application granted granted Critical
Publication of EP2338829B1 publication Critical patent/EP2338829B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B3/00—Closing bottles, jars or similar containers by applying caps
    • B67B3/26—Applications of control, warning, or safety devices in capping machinery
    • B67B3/262—Devices for controlling the caps
    • B67B3/264—Devices for controlling the caps positioning of the caps

Definitions

  • the present invention relates to an apparatus and a method for closing containers with screw caps.
  • Such devices have long been known from the prior art, which close, for example, PET plastic bottles with closures. These plastic bottles usually have external threads on their mouths, onto which the closures are screwed.
  • the plastic containers have a so-called circlip, over which the guarantee strip of the closure must be pushed.
  • the closure device must exceed a certain torque to overcome the circlip.
  • the JP 11 124 196 A describes a device for closing containers.
  • a control device detects a start position of a threaded engagement between the closure and the mouth of the container.
  • a displacement sensor is provided which detects an (absolute) displacement of the container closure.
  • a reverse rotation occurs until a stroke sensor detects the end of the threads. Subsequently, the closing of the containers angle of rotation controlled.
  • this procedure is relatively complicated, since, as already mentioned, the thread must first be detected via a reverse rotation.
  • the JP 61 15 591 A describes another device for closing containers with closures. Again, there is first a reverse rotation of the container closure until the threads are detected. Subsequently, a time-controlled closing or also a determination of a starting angle and then a rotation angle controlled closing takes place.
  • the DE 10 124 659 A1 describes a device for screwing screw caps on containers.
  • a speed monitoring is carried out, wherein a magnetic coupling is provided between a drivable spindle and the closing head.
  • a camera device is provided, which detects the meeting of the two threads of the closure and the container.
  • the EP 0 571 980 A2 discloses a device according to the preamble of claim 1.
  • the object of the present invention is to provide a device and a method for closing containers, which are simpler and, if necessary, less expensive than the state of the art.
  • a device for closing containers with closures has at least one closing head which at least temporarily carries or holds the closure, and also a rotary drive which rotates the closure with respect to the container.
  • the device has a distance determination device which, at least temporarily during the closing operation, determines a distance between an opening of the container and the closure in a longitudinal direction of the container.
  • the container is usually exactly positioned in terms of height, for example via a spike plate, which holds the support ring of the container, at a suitable location in the capper, the distance of the closure or the Verschmirroredkopfes to the mouth of the container and, for example, a support device, which carries the container to be measured.
  • the invention is therefore based on the finding that from the relative position of the closure relative to the container in the longitudinal direction of the container can be closed to the closure state.
  • the rotary drive rotates the closure about a longitudinal axis of the container.
  • the invention makes use of the fact that, for example, in a closed state of the container, the closure has a precisely defined distance from the mouth. Since the closure on the one hand usually firmly fixed in the capping or closing cone and on the other hand usually a spring pushes the closure in the thread of the container, an exact altitude is given.
  • the containers are containers with threads, in particular with external threads.
  • the capping head is not only rotatable, but also movable in a longitudinal direction of the container relative to the container.
  • the rotary drive more preferably rotates the closure and the container is also preferably held against rotation.
  • the device has a processor device which determines a closure state of the closure relative to the container from the determined distance.
  • a processor device which determines a closure state of the closure relative to the container from the determined distance.
  • a distance between the thread and the mouth or another reference point of the container (or the device) is determined and then is deduced from this distance to a Verschplischreib, for example, is determined how many revolutions are still necessary are to completely close the container or to have overcome the engagement of the guarantee strip on the retaining ring.
  • the processor device can take into account special characteristics of the thread, such as a thread pitch or a thread height.
  • the distance determining means is designed such that it determines the distance at least once during the closing process, d. H. in a period in which the closure is already partially screwed onto the thread, but the container is not completely closed.
  • the drive means which is preferably a servo drive, informed, this can due to the thread pitch calculate the closing end to be reached very accurately.
  • the device according to the invention reduces the torque after safely overcoming the guarantee strip a lower final torque with which the closure is fixed on the container at the end of the closing process.
  • the distance determination device preferably determines a distance between a container-carrying element and the closing head. It should be noted that the closure is firmly fixed in the sealing cone or in the closing head and thereby results in a position of the closure head and a position of the closure.
  • the container-carrying element or support element may, for example, be a so-called spike plate, which not only supports the container on its support ring but also prevents rotation of the container.
  • the container is fixed in height.
  • the position detection device is placed in the device such that the distance is detected at a time in which the closure is already threaded into the thread of the container, but not yet screwed to this firmly.
  • the device has a biasing device, which at least temporarily zuspannt the closure during the closing operation in the longitudinal direction of the mouth of the container. This means that, for example, when the container is upright, the closure is biased towards the bottom of the container. At the beginning or during the closing process, the closure is pressed by the biasing means or spring into the thread. Thus, the position of the closure relative to the container is precisely defined. However, it would also be conceivable that a biasing device biases the closure in the opposite direction, ie away from the mouth.
  • the device has a memory device in which characteristic data for a thread of the container (and / or the closure) are stored. These data may be, for example, a thread pitch or even a thread height (of the container and / or the closure). Based on this data, the processor device can determine from a measured distance between the thread and the container by which angle of rotation the shutter is still being rotated must, in order to achieve a complete closure of the container or at least until the guarantee strip has overcome the circlip.
  • the device has a transport device which transports the container along a predetermined transport path.
  • the above-mentioned support element can be guided or moved along the transport path.
  • the device has a carrier on which a plurality of containers is arranged. So it is also possible that several Verschpenköpfe are provided so that multiple containers can be closed at the same time.
  • the predetermined transport path is a circular path.
  • the closure is advantageously applied during transport of the container on this.
  • the distance determination device has a measuring element which is selected from a group of measuring elements which contains inductively operating measuring elements, capacitively operating measuring elements, optically operating measuring elements, mechanically operating measuring elements and the like. Therefore, a wide variety of physical length measuring methods can be used. Thus, for example, a surface detection of a magnetic field change would preferably be possible, so that the position of the shutter can be determined both with regard to a height and with respect to the angular position on a circular transport path by means of a single measuring device.
  • this magnetic field change could be caused by a movement of the closing head, this closing head being arranged closer or further away from a specific sensor device.
  • the distance determination device could also be set up in such a way that the distance is measured permanently and it is determined only at a precisely determined limit value that the closing head is still rotated by a predetermined angle of rotation.
  • the distance detection device could be designed such that it outputs a signal, for example, falls below a certain distance.
  • a position of the closing head relative to the container can be changed. So the capping head, the shutter first bring to the container and then start with the actual screwing.
  • the present invention is further directed to a method for closing containers with closures, wherein the closures are turned on mouths of the containers.
  • a distance between the mouth of the container (or another area of the container) and the closure in a longitudinal direction of the container is determined at least once during the closing operation.
  • a distance between the closure and a substantially arbitrary area of the container, which serves as a reference point can be measured.
  • a distance between a support ring or a support ring supporting element and the closure is determined.
  • the distance is determined after the closing operation has begun, but (clearly) before its end.
  • the distance is determined after the closing operation has begun, but (clearly) before its end.
  • the position-determining device is arranged in its angular position variable with respect to the closing head, but also that it is arranged variably in relation to a transport device for transporting the closures.
  • the closure is biased against the mouth of the container during the closing operation.
  • the closure is biased in the direction of a container bottom relative to the thread.
  • Fig. 1 shows a device 1 according to the invention for closing containers 10.
  • This device has a central shaft 20 which is rotated by a drive means 36 such as a servo motor about a rotation axis X.
  • a drive means 36 such as a servo motor about a rotation axis X.
  • a plurality of drive means 4 is arranged, which thus also rotate about the axis X.
  • These drive devices 4, or servomotors serve to drive the individual Verschwinkexcellent 2, which screw container closures on the containers 10.
  • the drive device 4 drives a first gear 32, which is embodied here as a long wheel whose teeth extend in the direction of the arrow P. From this gear 32, a second gear 34 is driven. Furthermore, this gear 34 can also move relative to the first gear 32 in the direction P and thus the capping head 2 can also move in the direction P up and down.
  • the Verschplikexcellent can be arranged in a clean room and the drive device 4 outside the clean room. The actuation of the Verschwinkexcellent in the direction P can be done by a guide curve.
  • the reference numeral 8 denotes a spindle or VerInstitutwerferstange on which the capping head 2, which in turn carries a container closure 12 moves up and down.
  • the container is held by a support element 22 (ie, a member carrying the container) or a spiked carrier.
  • a support element 22 ie, a member carrying the container
  • a spiked carrier ie, a member carrying the container
  • the position of the container 10 in the direction P is precisely defined.
  • the thread is defined in a precise position in the direction P.
  • the reference numeral 18 denotes a spring element, which the closing head 2 in the direction of the container, d. H. here biased in the direction of the arrow P1. In this way, the closure is pressed into the thread and is therefore precisely defined with respect to its position.
  • the reference numeral 14 roughly indicates schematically a distance measuring device which determines a distance between the closing head 2 and the support element 22.
  • this distance measuring device 14 can be movably arranged both in a circumferential device with respect to the axis Y and in a circumferential direction about the axis X.
  • the axis Y represents the axis of rotation, with respect to which the closures screwed onto the containers 10 become.
  • this axis also represents a rotation or symmetry axis of the container 10 and in particular also the longitudinal direction L of the container.
  • the distance detection device is also movable in the direction L.
  • the reference numeral 16 denotes a processor device or control device which controls the individual drive motors 4. This control takes place in particular in response to an input signal, which outputs the distance measuring device 14. Depending on this signal, the motors 4 are controlled and, for example, given a rotation angle in which the closures are still to rotate with respect to the containers (about the axis 4) to securely close the container and in particular to cause the locking ring of the guarantee band is overcome.
  • the reference numeral 36 denotes a further drive device, which causes the transport of the containers about the axis X. On a main carrier 38, the individual drive means 4 are arranged.
  • FIG. 2 shows a more detailed representation of the process. It can be seen here again that an opening 10a of the container 10 is seated on a support element 22, wherein this support element 22 carries here pointed projections 24 which prevent rotation of the container. More specifically, the container 10 is supported on its support ring 10b on this plate. A closure 12, of which, however, only the lower part, that is to say a part of the guarantee strip, is visible here, is screwed onto the thread 10c of a corresponding container 10.
  • the closure 12 is gripped by a closing head 2, whereby the position of the closure relative to the closing head 2 is precisely defined. Via the distance measuring device 14, a distance d between the closing head 2 and the plate 22 is measured. This is conceivable, for example, if these two elements are each made of an electrically conductive material. From this distance d, the position of the closure 12 relative to the thread 10c or relative to the container 10 in the direction L of the container can thus be determined.
  • a corresponding value can be sent to the drive device 4 (also cf. FIG. 1 ) can be issued to determine by which angle of rotation the closing head is still to turn.
  • a rough distance measurement can be carried out initially in order to check whether the closure has already intervened in the thread of the container mouth. At a later point in time during the closing process, a fine measurement can then be made in order to be able to determine exactly by which angle the shutter still has to be turned. It is also possible that a rotational position of the closure is detected at least once during the closing operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Jars (AREA)
  • Closures For Containers (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)
  • Closing Of Containers (AREA)

Claims (8)

  1. Dispositif (1) destiné à fermer des récipients (10) au moyen de fermetures à vis (12), le dispositif (1) comprenant une tête de fermeture (2) qui porte la fermeture (12) au moins par intermittence et un entraînement rotatif (4) étant prévu qui fait tourner la fermeture (12) par rapport au récipient (10),
    le dispositif (1) comprenant un système de détermination de distance (14), lequel détermine au moins par intermittence pendant une procédure de fermeture une distance (d) entre une embouchure (10a) du récipient (10) et la fermeture (12) dans une direction longitudinale (L) du récipient (10), le dispositif comprenant un système à processeur (16), lequel détermine à partir de la distance (d) déterminée un état de fermeture de la fermeture (12) par rapport au récipient (10), et le dispositif (1) comprend un dispositif mémoire dans lequel des données caractéristiques d'un filet du récipient sont mises en mémoire, caractérisé en ce que, sur la base de ces données, le système à processeur détermine à partir de la distance (d) mesurée de quel angle de rotation la fermeture (12) nécessite encore d'être amenée en rotation, afin que le récipient (10) soit intégralement fermé.
  2. Dispositif (1) selon la revendication 1,
    caractérisé en ce que
    le dispositif de détermination de distance (14) détermine une distance entre un élément (22) portant le récipient (10) et la tête de fermeture (2).
  3. Dispositif (1) selon au moins l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif (1) comprend un système de précontrainte (18), lequel serre la fermeture (12) sur l'embouchure (10a) du récipient dans la direction longitudinale (L) au moins par intermittence pendant la procédure de fermeture.
  4. Dispositif (1) selon au moins l'une des revendications précédentes,
    caractérisé en ce que
    le dispositif (1) comprend un système de transport, lequel transporte le récipient le long d'un trajet de transport prédéfini.
  5. Dispositif (1) selon au moins l'une des revendications précédentes,
    caractérisé en ce que
    le système de détermination de distance (14) comprend un élément de mesure, lequel est choisi dans un groupe d'éléments de mesure, lequel contient des éléments de mesure à fonctionnement par induction, des éléments de mesure à fonctionnement capacitif, des éléments de mesure à fonctionnement optique, des éléments de mesure à fonctionnement mécanique et similaires.
  6. Dispositif (1) selon au moins l'une des revendications précédentes, caractérisé en ce qu'
    une position de la tête de fermeture (2) par rapport au récipient (10) peut être modifiée.
  7. Procédé de fermeture de récipients au moyen de fermetures (12), à l'aide d'un dispositif (1) selon l'une des revendications précédentes, les fermetures (12) étant vissées sur les embouchures (10a) des récipients,
    une distance (d) entre l'embouchure (10a) du récipient (10) et la fermeture (12) dans une direction longitudinale (L) du récipient (10) étant déterminée au moins une fois pendant la procédure de fermeture.
  8. Procédé selon la revendication 7,
    caractérisé en ce que
    la fermeture (12) est précontrainte par rapport à l'embouchure du récipient (10) pendant la procédure de fermeture.
EP10195539.1A 2009-12-22 2010-12-17 Dispositif et procédé de fermeture de récipients à l'aide de mesures de distance Not-in-force EP2338829B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910060625 DE102009060625A1 (de) 2009-12-22 2009-12-22 Vorrichtung und Verfahren zum Verschließen von Behältnissen mit Abstandsmessungen

Publications (3)

Publication Number Publication Date
EP2338829A2 EP2338829A2 (fr) 2011-06-29
EP2338829A3 EP2338829A3 (fr) 2012-12-26
EP2338829B1 true EP2338829B1 (fr) 2016-03-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10195539.1A Not-in-force EP2338829B1 (fr) 2009-12-22 2010-12-17 Dispositif et procédé de fermeture de récipients à l'aide de mesures de distance

Country Status (3)

Country Link
EP (1) EP2338829B1 (fr)
CN (1) CN102139848B (fr)
DE (1) DE102009060625A1 (fr)

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DE102021127195A1 (de) 2021-10-20 2023-04-20 Krones Aktiengesellschaft Verschließen von Behältern mit Behälterverschlüssen

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EP3778417A1 (fr) 2015-01-23 2021-02-17 Tetra Laval Holdings & Finance S.A. Capuchon vissé et récipient d'emballage pour produits alimentaires
US10640351B2 (en) 2015-05-07 2020-05-05 Tetra Laval Holdings & Finance S.A. Cap orientation
DE102015112574A1 (de) 2015-07-30 2017-02-02 Steinfurth Mess-Systeme GmbH Verschließwinkelmessung mit Drehmoment
CN105915897B (zh) * 2016-05-30 2018-03-06 浙江宇视科技有限公司 一种检测摄像机外盖松脱的方法及装置、摄像机
DE102017200913A1 (de) 2017-01-20 2018-07-26 Krones Ag Vorrichtung und Verfahren zur Verschlusskontrolle für Verschlüsse auf Behältern
IT201700011057A1 (it) * 2017-02-01 2018-08-01 Arol Spa Gruppo di misura di coppia di torsione e/o carico assiale per teste di tappatura
CN114715448B (zh) * 2022-06-09 2022-08-26 北京先通国际医药科技股份有限公司 放射性药物的分装系统及分装方法、及其用途

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Also Published As

Publication number Publication date
EP2338829A2 (fr) 2011-06-29
CN102139848A (zh) 2011-08-03
DE102009060625A1 (de) 2011-06-30
EP2338829A3 (fr) 2012-12-26
CN102139848B (zh) 2014-12-17

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