EP0524196A1 - Mecanisme vireur pour couvercles filetes et procede de montage de couvercles filetes sur des conteneurs. - Google Patents

Mecanisme vireur pour couvercles filetes et procede de montage de couvercles filetes sur des conteneurs.

Info

Publication number
EP0524196A1
EP0524196A1 EP91905499A EP91905499A EP0524196A1 EP 0524196 A1 EP0524196 A1 EP 0524196A1 EP 91905499 A EP91905499 A EP 91905499A EP 91905499 A EP91905499 A EP 91905499A EP 0524196 A1 EP0524196 A1 EP 0524196A1
Authority
EP
European Patent Office
Prior art keywords
torque
rotation
closing
angle
container
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
EP91905499A
Other languages
German (de)
English (en)
Other versions
EP0524196B1 (fr
Inventor
Guenter Spatz
Wolfhard Schwarz
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.)
Alcoa Deutschland GmbH Verpackungswerke
Original Assignee
Alcoa Deutschland GmbH Verpackungswerke
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6404038&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0524196(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Alcoa Deutschland GmbH Verpackungswerke filed Critical Alcoa Deutschland GmbH Verpackungswerke
Publication of EP0524196A1 publication Critical patent/EP0524196A1/fr
Application granted granted Critical
Publication of EP0524196B1 publication Critical patent/EP0524196B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

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
    • B67B3/20—Closing bottles, jars or similar containers by applying caps by applying and rotating preformed threaded caps
    • B67B3/2073—Closing bottles, jars or similar containers by applying caps by applying and rotating preformed threaded caps comprising torque limiting means
    • B67B3/208—Electrical means responsive to the torque applied and acting on motor control means, e.g. strain gauges or power measurement means
    • 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

Definitions

  • the invention relates to a turning device for screw caps according to the preamble of claim 1 and a method for applying screw caps to containers according to the preamble of claim 10.
  • a rotating device for screw closures and a method for applying such closures to containers are known (DE-OS 37 15 935).
  • the known rotating device is used to screw closures onto containers and to maintain a predetermined closing torque.
  • a torque limiting device prevents the desired torque from being exceeded.
  • a control circuit measures the drive current absorbed by the drive motor of the rotary device and releases it Rising of the current to a certain value, which corresponds to a certain torque of the screwed closure, control signals by which the drive current of the drive motor is interrupted. This directly affects the energy supply to the drive.
  • This object is achieved in a rotating device of the type mentioned at the beginning with the aid of the guided characteristics solved. Because the control device first determines via a torque sensor whether a certain closing torque, the application torque, has been reached during the closing process, a defined starting point for the further measurements during the closing process is established. After reaching this application torque, the angle of rotation about which the screw closure is rotated by the rotating device is detected. The detection of the angle of rotation after the application torque has been reached ensures that the container is closed particularly sensitively. Damage to the mouth area can thus be excluded with a high degree of certainty and a very exact adherence to a desired opening torque can be ensured.
  • control device is designed such that the angle of rotation by which the screw closure is rotated further after the predetermined application torque has been reached can be limited to a predeterminable value.
  • This design of the turning device leads to a particularly sensitive setting of the desired closing torque, the predetermined opening torque being able to be adhered to very precisely.
  • the torque acting on the screw closure is detected with the aid of the control device serving as a torque limiting device.
  • the current supplied to the drive of the rotary device or the voltage applied to the drive is detected. Since the power consumed by the drive is proportional to the voltage or Is current, the instantaneous torque can be determined from the instantaneous values of the current or the voltage. This moment detection is particularly easy to carry out.
  • the change in the tightening torque over time is recorded. If, therefore, the closure suddenly hooks or cant when screwing it on, which is recognized by a rapid increase in the torque per unit of time, the closing process can be interrupted so that the mouth region of the container is not damaged.
  • the closure is first screwed onto the container until a predetermined tightening torque, the application torque, is reached. This defines a defined initial state of the closing process. The closure is then rotated further by a predeterminable angle of rotation with respect to the container. This leads to a secure setting of the desired closing torque, with damage to the muzzle being practically excluded.
  • the change in the tightening torque over time is also detected after the application torque has been reached. Disruptions
  • the method during this phase for example tilting of the closure on the container, can thus be reliably detected.
  • an embodiment of the method is preferred in which the screw closure is screwed on until a high limit torque lying above the closing moment is reached.
  • the closure is then rotated in the opposite direction by a predeterminable angle of rotation in order to set the desired closing torque - and thus also a specific opening torque. It is particularly advantageous with this method that containers can also be closed, the threads of which show minor damage and in which an increased closing torque must therefore be applied in order to screw the closure onto the container.
  • the illustration shows a container 1, here a bottle, onto which a plastic screw cap 3 is to be screwed.
  • the closure is gripped by a sketched sealing cone 5 of a rotating device 7 and placed on the container 1. It is irrelevant to the invention whether the sealing cone 5 is rotated relative to the container 1 or whether the sealing cone is fixed and the container 1 rotates.
  • the sealing cone 5 is rotated here by a motor 9 serving as a drive, which is supplied with current or voltage via a switching device 11.
  • a sensor 13 is provided between the power supply and the switching device, which detects the current or the voltage. In principle, it is also possible to provide the sensor 13 between the switching device 11 and the motor 9.
  • a torque sensor 15, which detects the torque acting on the screw closure 3, is assigned to the motor 9 or the closing cone 5. Furthermore, the locking cone 5 is assigned a rotation angle sensor 17, which detects the angular position of the cone.
  • a strain gauge system which is integrated in the spindle of the motor 5, which is not explicitly shown in the figure, is preferably used as the torque sensor 15.
  • An in. Is preferably used for the angle measurement the spindle integrated opto-electronic incremental encoder.
  • the signals from the current or voltage sensor 13, the torque sensor 15 and those from the angle of rotation sensor 17 are fed to a control device 19 which evaluates and processes the measured values. Furthermore, these signals are fed to a comparator circuit 21. This also receives suitable values Ml, M2, M3, M7 and Mö for suitable tightening torques as well as certain values W and Wl for predetermined angles of rotation via suitable actuators. The output signals of the comparator circuit 21 are fed to the control device 19.
  • the control device 19 is connected via a control line 23 to the switching device 11 of the motor 9. It is also provided with a differentiator 25 to which the output signals of the torque and angle sensors are fed.
  • the sensor 13 which detects the supply voltage and / or the supply current of the motor 9, serves to determine the torque currently applied by the motor, it being assumed that the torque is proportional to the voltage or to the current. By detecting the changes over time of the supply voltage or the supply current of the motor, changes over time of the torque can also be determined. In this case, the torque sensor 15 described above could be omitted.
  • the function of the rotating device 7 and the method for closing containers are explained in more detail below.
  • the device and the method are suitable for closing any container.
  • the use of the device or the method for closing bottles with the aid of plastic closures is preferred.
  • the bottles can be made of glass or plastic, for example PET.
  • the screw cap 3 is introduced into the sealing cone 5 in any manner, for example in a so-called pick process.
  • the sealing cone 5 with the screw closure 3 clamped therein is then arranged over a container 1 to be sealed.
  • the locking cone 5 rotates here relative to the fixed container 1.
  • the rotating screw cap 3 is now placed on the container 1.
  • a corresponding switching signal is sent from the control device 19 via the control line 23 to the switching device 11, which, for example, has an electronic switch or a relay, so that the motor 9 is supplied with energy.
  • the switching device 11 which, for example, has an electronic switch or a relay, so that the motor 9 is supplied with energy.
  • the closing torque or tightening torque exerted by the motor 9 on the closing cone 5 or the screw closure 3 is recorded.
  • the instantaneous moment can be determined on the one hand with the aid of the sensor 13, which measures the Tor 9 delivered current or the applied voltage. It is also possible to directly measure the torque transmitted from the motor 9 to the closing cone 5 with the aid of the torque sensor 15.
  • the output signal of the sensor 13 or of the torque sensor 15 is fed to the control device 19 but also to the comparator 21.
  • the rotation angle sensor 17 can be dispensed with.
  • the torque applied by the motor 9 can be determined so precisely that when the predeterminable closing torque M2 is reached via the control device 19 and the control line 23, the switching device 11 is actuated such that the motor 9 is switched off.
  • the torque is proportional to that applied to the motor. current or voltage. If only a low accuracy is desired when the closing torque M2 is reached, this method is sufficient for closing containers.
  • the control device 19 can, for example, be provided with a timing element which specifies a specific time within which the application or the closing torque must be reached. If this is not the case, a control signal is outputted via a signal line S and the currently under ⁇ half of the closing cone 1 discarded 5 arranged vessel 1 from the closing line.
  • a specific angle of rotation can also be specified. This means that the closure is screwed onto the container by one full revolution, for example. After that, the application torque must be reached. If this is not the case, it is concluded that there is damage to the container or the closure. The corresponding container is separated out.
  • the application torque M1 is reached and the rotation angle sensor 17 has been activated by the control device 19, the locking cone 5 is rotated further until the instantaneous rotation angle reaches the value W entered into the comparator 21.
  • the predetermined angle of rotation W is determined on the basis of experiments. This ensures that the desired closing torque M2 is reached.
  • the momentary tightening torque can be monitored further using the torque sensor 15 and compared in the comparator circuit 21 with a second torque value, a predetermined maximum value M3. If this maximum value M3 is reached during the further rotation of the closure, it can be concluded that there is a muzzle error. If, for example, the thread on the outside of the container is jagged, it cuts into the inner wall or into the thread of the plastic screw closure 3. The torque required to turn the closure further increases so much that the predetermined maximum value M3 is exceeded.
  • the switching device 11 is actuated via the control line 23 such that the motor 9 no longer drives the locking cone 5. This avoids that excessive torque acts on the mouth area of the container 1 and damage occurs.
  • the maximum tightening torque .M3 could also be exceeded before the desired angle of rotation W is reached if the closure 3 jams on the thread of the container after reaching the application torque Ml. Even then, on the one hand, it would not be ensured that the seal provided in the closure seals the container pressure tightly, on the other hand, if the sealing process continues, an excessive moment could act on the mouth region of the container due to the tilting and lead to damage.
  • a differentiating element 25 which determines the time derivative of the output signal of the torque sensor 15 but also of the output signal of the angle of rotation sensor 17.
  • the opening torque, the torque Mo required for the first opening of the container can be set to a desired value.
  • additional security is also achieved in this way by tilting the closure or damage to the thread of the closure or the container being recognized and the containers concerned being able to be separated out.
  • the method can be modified insofar as the screw cap 3 is screwed by the motor 9 until the torque sensor 15 and the comparator 21 determine that a torque limit value Mg has been reached which is above the closing torque M2.
  • the increased tightening torque means that containers 1 with small thread damage can also be securely closed. Basically, it should be noted that in the event of thread damage, the ultimately desired locking torque M2 is reached before the lock has reached its final position on the container thread, because the damage creates additional frictional forces.
  • a reversal is carried out after the closure has been screwed on up to the limit torque Mg by a control signal from the control device 19, which is fed via line 23 to the switching device 11 the energy supply to the motor 9 is reached. This then turns in the opposite direction.
  • the angle of rotation sensor 17 is activated simultaneously with this control signal. Its output signals are compared in the comparator 21 with an angle value W1 assigned to the left rotation or the opening movement.
  • the switching device 11 can be controlled in such a way that an energy reversal or polarity reversal of the energy supply to the motor 9 is achieved, it is possible for the rotary device of the type described above to be controlled such that when an error occurs during the When a container is closed, the direction of rotation is first reversed and the closure is unscrewed again from the container. Then the closing process is started again. If a proper the container is left in the normal manufacturing process. Only when an error occurs again, for example because the closure or the mouth area of the container has been destroyed, is the container removed from the process. In this way, discharges can be reduced to a minimum, which means that further processing steps have to be carried out outside the normal workflow. By reversing the energy supply, a further improvement of the closing process can be achieved.
  • the closure 3 Due to the possibility of energy reversal, it is also possible to turn the closure 3 against the closure direction after the first placement on the container 1. In this way, the thread provided in the closure can be optimally aligned with respect to the container thread. After a certain counterclockwise rotation, the closure engages on the container, which can be determined, for example, by the axial movement of the closure relative to the container. This movement can be sensed by a suitable displacement sensor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Jars (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Closures For Containers (AREA)

Abstract

L'invention propose un mécanisme vireur pour couvercles filetés, en particulier en matière synthétique, destinés à des conteneurs, qui est pourvu d'un entraînement et d'un dispositif limiteur de couple. Ledit mécanisme se caractérise par le fait que l'on utilise comme dispositif limiteur de couple, un mécanisme de commande (19) qui commande l'approvisionnement en énergie de l'entraînement (9) en fonction du couple de fermeture et/ou de l'angle de rotation du couvercle (3) mesuré par un capteur (17) d'angle de rotation. Le mécanisme de commande actionne un dispositif de commutation en fonction du signal provenant d'un capteur de couple (15) ou d'un capteur d'angle de rotation, ledit signal étant comparé dans un comparateur (21) avec des couples ou des angles de rotation prédéterminés. Le dispositif de commutation (9) peut ouvrir, interrompre ou inverser l'alimentation en énergie du moteur (9). Si l'alimentation en énergie est inversée, le sens de rotation du moteur est inversé.
EP91905499A 1990-04-09 1991-03-02 Mecanisme vireur pour couvercles filetes et procede de montage de couvercles filetes sur des conteneurs Revoked EP0524196B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4011398A DE4011398C2 (de) 1990-04-09 1990-04-09 Vorrichtung und Verfahren zum Aufbringen von Schraubverschlüssen auf Behälter
DE4011398 1990-04-09
PCT/EP1991/000394 WO1991015422A1 (fr) 1990-04-09 1991-03-02 Mecanisme vireur pour couvercles filetes et procede de montage de couvercles filetes sur des conteneurs

Publications (2)

Publication Number Publication Date
EP0524196A1 true EP0524196A1 (fr) 1993-01-27
EP0524196B1 EP0524196B1 (fr) 1994-10-05

Family

ID=6404038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91905499A Revoked EP0524196B1 (fr) 1990-04-09 1991-03-02 Mecanisme vireur pour couvercles filetes et procede de montage de couvercles filetes sur des conteneurs

Country Status (7)

Country Link
US (1) US5321935A (fr)
EP (1) EP0524196B1 (fr)
KR (1) KR970009389B1 (fr)
AT (1) ATE112536T1 (fr)
DE (1) DE4011398C2 (fr)
ES (1) ES2066427T3 (fr)
WO (1) WO1991015422A1 (fr)

Cited By (1)

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EP1139556A1 (fr) * 2000-03-30 2001-10-04 Etablissements Andre Zalkin Et Cie Dispositif, procédé et programme de commande de moteur électrique

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EP0639529B1 (fr) * 1993-08-09 1995-06-28 Patricia Heinlein Dispositif et procédé pour visser des fermetures à vis
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DE19521924C2 (de) * 1994-06-24 1999-08-05 Lange Gmbh Dr Bruno Schraubverschluß für ein Gefäß sowie Vorrichtung zum automatisierten Verschließen des Gefäßes
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FR2856394B1 (fr) * 2003-06-23 2007-04-13 Andre Zalkin & Cie Ets Dispositif et procede de commande de bouchage de recipient et machine associee
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US20060162285A1 (en) * 2005-01-21 2006-07-27 Haynes Clinton A Torque transducer assembly
JP2006335385A (ja) * 2005-05-31 2006-12-14 Shibuya Kogyo Co Ltd キャッピング方法とキャッピング装置
DE102006025811A1 (de) * 2006-05-31 2007-12-06 Khs Ag Verfahren zur Bestimmung des Verschließ-Endmoments beim Verschließen von Flaschen oder dergleichen Behälter sowie Verschließmaschine
DE102007047742A1 (de) * 2007-10-05 2009-04-09 Krones Ag Verfahren und Vorrichtung zum Verschließen von Behältnissen
US7992365B2 (en) * 2008-01-11 2011-08-09 Parata Systems, Llc Devices and methods for verifying capping of vials in system for dispensing prescriptions
DE102008030038A1 (de) 2008-06-12 2009-12-17 Arzneimittel Gmbh Apotheker Vetter & Co. Ravensburg Vorrichtung zur Prüfung der bestimmungsgemäßen Positionierung eines Stopfens in einer einen Hohlkörper aufweisenden Spritze oder Karpule
DE102008030271A1 (de) 2008-06-19 2009-12-31 Arzneimittel Gmbh Apotheker Vetter & Co. Ravensburg Vorrichtung und Verfahren zur Prüfung der Dichtigkeit von Verschlusskappen auf medizinischen Hohlkörpern
IT1391298B1 (it) * 2008-10-17 2011-12-01 Arol Spa Testa per l'applicazione di capsule filettate a contenitori
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DE102010012858B4 (de) * 2010-03-25 2020-07-09 Packsys Global (Switzerland) Ltd. Vorrichtung und Verfahren zur rotatorischen Ausrichtung eines Tubenkopfes relativ zu einem Tubenkörper
DE102012003809A1 (de) * 2012-02-27 2013-08-29 Heuft Systemtechnik Gmbh Verfahren und Vorrichtung zum berührungslosen Prüfen des zum Öffnen eines Kunststoff-Schraubverschlusses erforderlichen Drehmoments
JP6188800B2 (ja) * 2012-08-07 2017-08-30 スィドラクス アー・エスＣｅｄｒｅｘ Ａ／Ｓ テストチューブ蓋着脱装置
JP6155482B2 (ja) * 2013-03-26 2017-07-05 靜甲株式会社 キャップの巻締め方法および巻締め装置
JP6898242B2 (ja) 2015-01-23 2021-07-07 テトラ ラバル ホールディングス アンド ファイナンス エス エイ スクリューキャップ及び食品用パッケージング容器
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1139556A1 (fr) * 2000-03-30 2001-10-04 Etablissements Andre Zalkin Et Cie Dispositif, procédé et programme de commande de moteur électrique
FR2807235A1 (fr) * 2000-03-30 2001-10-05 Andre Zalkin & Cie Ets Dispositif, procede et programme de commande de moteur electrique
US6525498B2 (en) 2000-03-30 2003-02-25 Etablissements Andre Zalkin Electric motor control device, method and program

Also Published As

Publication number Publication date
DE4011398A1 (de) 1991-10-10
EP0524196B1 (fr) 1994-10-05
ES2066427T3 (es) 1995-03-01
ATE112536T1 (de) 1994-10-15
WO1991015422A1 (fr) 1991-10-17
KR970009389B1 (ko) 1997-06-12
US5321935A (en) 1994-06-21
DE4011398C2 (de) 1994-09-22

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