EP0639529A1 - Dispositif et procédé pour visser des fermetures à vis - Google Patents
Dispositif et procédé pour visser des fermetures à vis Download PDFInfo
- Publication number
- EP0639529A1 EP0639529A1 EP93112741A EP93112741A EP0639529A1 EP 0639529 A1 EP0639529 A1 EP 0639529A1 EP 93112741 A EP93112741 A EP 93112741A EP 93112741 A EP93112741 A EP 93112741A EP 0639529 A1 EP0639529 A1 EP 0639529A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- torque
- screw
- screwing
- sensor
- controller
- 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
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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
- B67B3/20—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
Definitions
- Device and method for screwing on screw closures in particular screw closures with a tamper-evident securing ring that overlaps a transfer ring on the bottle neck, comprising a rotationally drivable screw cap that engages or overlaps the screw cap, which is arranged at the free front end of a drive shaft, the drive shaft being connected via a first electromagnetic one Coupling can be coupled to the rotary drive shaft of a rotary drive, the screw attachment being mounted so that it can move up and down to engage the screw cap, a second brake magnetic clutch being arranged between the drive shaft carrying the screw attachment and the rotationally fixed clutch housing surrounding the first magnetic coupling, and wherein a sensor for detecting the unscrewing torque is provided.
- the invention relates to a method in which it is provided that the rotary drive is braked towards the end of the screwing-on process by an electromagnetic brake clutch.
- the invention is based on the fact that - as already discussed in the generic document - with conventional screwing devices and methods it is possible to automatically screw a closure cap loosely placed on a filled container.
- the rotary drive and the electromagnetic clutch are designed in known arrangements so that the screwing resistance is reliably overcome when screwing on.
- the torque must be set relatively high, so that it is guaranteed that irregularities, for example on the threaded neck of glass bottles, and the increased Resistance when slipping on the tamper-evident ring on the cap can be reliably overcome using a transfer ring on the bottle.
- this also means that in some cases the closing torque is so high that the screwed-on closure can hardly be opened by older or frail people.
- the object of the invention is to improve the generic device and the generic method even further, so that this also meets the highest requirements for a defined closure torque, as are made in particular by the pharmaceutical industry when unscrewing closure caps for pharmaceutical bottles can be.
- the sensor for detecting the torque is designed as a torque sensor which continuously detects the respectively applied torque, and that a controller is arranged downstream of the torque transmitter in such a way that the output signal of the torque transmitter is fed to the controller as the actual value of the torque.
- an output of the controller is connected to the brake magnetic clutch in order to obtain the predetermined target by comparing a stored setpoint or setpoint curve with the actual values supplied by the torque transmitter and by acting on the current or current duration or current pulse duration of the brake magnetic clutch - Adjust values.
- the magnetic brake clutch is not only used to maximize the torque from a certain distance to bring quickly to zero, but a very defined torque is adjusted so that a predetermined locking torque is reliably achieved.
- a fundamentally improved reproducibility of the closing process can be achieved, whereby on the one hand it is ensured that the closure cap is always completely screwed on and on the other hand an excessive closing torque which prevents reopening is avoided.
- a device for detecting the lowering path is provided, the output of which is connected to an input of the controller.
- This device is advantageously designed as an incremental encoder, it being possible for a rack to be arranged on the outside of the housing of the device, in which a gearwheel of the stationary incremental encoder engages.
- the above-mentioned object is also achieved by a method which is characterized in that a desired course of the torque as a function of the screw-on travel distance is stored in the controller, that the lowering travel is detected by means of a corresponding encoder with each individual screw-on process, and that Setpoint torque stored for the respective amount of the lowering path is compared with the actual torque determined by the torque transmitter and the brake clutch is more or less engaged according to the deviation.
- the activation of the brake magnetic clutch depending on the required correction can be done so that the amplitude of the current through the magnet windings is changed or that a kind of pulse width modulation is used, so that the effective duration of current is changed by changing the width and, if necessary, plus the height of the pulses can be.
- the control is preferably carried out exclusively via the brake clutch, whereas the drive clutch remains permanently and uniformly energized. This naturally presupposes that the braking effect of the brake clutch and accordingly, their dimensioning is such that, despite the current being supplied to the drive clutch, braking to zero torque is possible, if necessary.
- the control of the torque starts at the lowering distance that corresponds to the overlapping of the lower edge of the transfer ring by the lower edge of the tamper-evident ring on the closure cap.
- a relatively high torque has to be used in order to overcome irregularities in the thread on the one hand and the thickening caused by the transfer ring on the other hand.
- the required torque then drops significantly, and the control according to the invention is then used to achieve the desired locking torque.
- the control is advantageously set and transitioned from controlled operation to a state in which the maximum braking effect is used and the torque acting on the screw cap is brought to zero. Accordingly, it is ensured that the screw cap has a defined end position and at the same time a defined closing torque.
- an output of the controller with a memory or recorder for logging the torque values achieved with each individual screwing operation. Accordingly, when bottles with high-quality products are closed, particularly in the pharmaceutical sector, a high level of quality assurance of the filled bottles can be achieved, which was not possible with conventional closing techniques.
- the device shown in FIG. 1 comprises a screw attachment 1, which is dimensioned such that it can grip a screw cap, not shown in FIG. 1, placed loosely on a container neck .
- the screw attachment is fastened to a drive shaft 2, which is mounted in a first housing part 5 via a ball bearing 3 for absorbing the radial forces and an axial ball bearing 4 for absorbing the axial forces.
- a ball bearing 3 for absorbing the radial forces
- an axial ball bearing 4 for absorbing the axial forces.
- two star couplings 29 and 30 is the Drive shaft 2 with the drive shaft 12 rotatably connected with an intermediate torque sensor.
- This torque transmitter Md is formed by a product which is commercially available as such and is therefore not shown in detail. Because of its arrangement, this torque transmitter Md can detect the screw-on torque that is transmitted by the screw-on device 1.
- a magnetizable disk 6 with a flange extension encompassing the drive shaft 12 forms, together with a coil 8, which is supplied with current via a schematically indicated line 9, an electromagnetic clutch 10.
- the magnetizable disk 6 and the flange extension 7 are rotationally fixed to the drive shaft 12 connected.
- the coil 8 is arranged rotatably relative to the housing part 5.
- a coil 13 is arranged, which is also mounted in a rotationally fixed manner with respect to the housing part 5, and in which a magnetic flange part 14 connected to the shaft 28 in a rotationally fixed manner engages.
- a corresponding flange part 16 is mounted over a narrow horizontal gap, separated from the flange part 14 by means of an axial ball bearing 15, and is connected in a rotationally fixed manner to the shaft 17 by means of a tooth coupling 11 with a rotary drive (not shown).
- the two flange parts 14 and 16 together with the coil 13 form a magnetic coupling 20.
- This first magnetic coupling 20 transmits a defined torque corresponding to the current supplied via a line 21 to the coil 13 from the shaft 17 to the drive shaft 12 and via the torque transmitter Md to the Shaft 2, which carries the screw attachment 1.
- the magnetic clutch 20 functions as a drive clutch.
- the housing 5 or 19 is lowered over the base plate 22 in the direction of arrow 23, the first Clutch 20, that is, the drive clutch, is activated by switching on the current through the coil 13. Accordingly, the screw attachment 1 rotates and the screw cap is screwed on, the housings 5, 19 being continuously lowered together with the rotary drive.
- the progress of the lowering process is detected by a rack 25 attached to the outside of the base plate 22, which drives a gear 26 of an incremental encoder, not shown in the drawing, the gear 26, as indicated at 27, being mounted in a stationary manner.
- the screw-on torque F is a function of the screw-on distance s, i.e. from the progressive lowering movement of the screw head 1, as detected by the incremental encoder via the gear 26.
- the cap is lowered into the position shown in Fig. 2b, from which the screwdriver 1 is engaged and the cap rotates, so that their internal thread comes into engagement with the external thread of the bottle neck, which increases the torque.
- An additional increase in torque is due to the fact that, starting from this phase, the drip insert is pushed into the inside of the bottle neck and reaches the position shown in FIG. 2c.
- phase a further increase in the torque occurs in that the tamper-evident ring 29 is pushed over the edge of the transfer ring until the lower edge of the tamper-evident ring 29 engages over the lower edge of the transfer ring.
- the required torque suddenly drops, as shown between phases c and d in the drawing, and the control according to the invention is used here starting from this way point, with phase d regulating to a constant torque value is screwed further down and then in phase e the torque value is increased until the desired locking torque.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Jars (AREA)
- Closures For Containers (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19930112741 EP0639529B1 (fr) | 1993-08-09 | 1993-08-09 | Dispositif et procédé pour visser des fermetures à vis |
DE59300313T DE59300313D1 (de) | 1993-08-09 | 1993-08-09 | Vorrichtung und Verfahren zum Aufschrauben von Schraubverschlüssen. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19930112741 EP0639529B1 (fr) | 1993-08-09 | 1993-08-09 | Dispositif et procédé pour visser des fermetures à vis |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0639529A1 true EP0639529A1 (fr) | 1995-02-22 |
EP0639529B1 EP0639529B1 (fr) | 1995-06-28 |
Family
ID=8213154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19930112741 Expired - Lifetime EP0639529B1 (fr) | 1993-08-09 | 1993-08-09 | Dispositif et procédé pour visser des fermetures à vis |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0639529B1 (fr) |
DE (1) | DE59300313D1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10245879A1 (de) * | 2002-09-30 | 2004-04-08 | Elau Elektronik Automations Ag | Vorrichtung zum Anbringen von Schraubverschlüssen |
EP1524002A1 (fr) * | 2003-10-16 | 2005-04-20 | Groninger & Co. Gmbh | Dispositif de préhension avec limitation du couple pour visser une pièce dans un objet |
WO2007028509A1 (fr) * | 2005-09-09 | 2007-03-15 | Alcoa Deutschland Gmbh | Dispositif de fermeture pour mettre en place des bouchons a vis sur des recipients |
WO2007137737A1 (fr) * | 2006-05-31 | 2007-12-06 | Khs Ag | Procédé de détermination du couple final de fermeture lors de la fermeture de bouteilles ou de contenants similaires, et capsuleuse |
DE102009045637A1 (de) * | 2009-10-13 | 2011-04-14 | Krones Ag | Verfahren und Vorrichtung zum Schraubverschließen von Gefäßen, insbesondere Flaschen |
CN103671921A (zh) * | 2013-11-07 | 2014-03-26 | 南京化工职业技术学院 | 端面摩擦扭矩可控的机械密封装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3750845A1 (fr) * | 2019-06-10 | 2020-12-16 | Sidel Participations, S.A.S. | Machine de capsulage pour l'application de capsules sur des récipients dans des conditions aseptiques ou ultra propres |
CN110550590A (zh) * | 2019-10-12 | 2019-12-10 | 广州达意隆包装机械股份有限公司 | 一种旋盖头 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2129409A (en) * | 1982-10-04 | 1984-05-16 | Shibuya Kogyo Co Ltd | Rotary type capping apparatus |
FR2629440A1 (fr) * | 1988-04-01 | 1989-10-06 | Servajean Roger | Dispositif de vissage d'un element sur un organe presentant au moins une portee filetee notamment |
WO1991015422A1 (fr) * | 1990-04-09 | 1991-10-17 | Alcoa Deutschland Gmbh Verpackungswerke | Mecanisme vireur pour couvercles filetes et procede de montage de couvercles filetes sur des conteneurs |
DE4131910A1 (de) * | 1991-09-25 | 1993-04-08 | Heinlein Plastik Technik Gmbh | Vorrichtung und verfahren zum aufschrauben von schraubverschluessen |
-
1993
- 1993-08-09 EP EP19930112741 patent/EP0639529B1/fr not_active Expired - Lifetime
- 1993-08-09 DE DE59300313T patent/DE59300313D1/de not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2129409A (en) * | 1982-10-04 | 1984-05-16 | Shibuya Kogyo Co Ltd | Rotary type capping apparatus |
FR2629440A1 (fr) * | 1988-04-01 | 1989-10-06 | Servajean Roger | Dispositif de vissage d'un element sur un organe presentant au moins une portee filetee notamment |
WO1991015422A1 (fr) * | 1990-04-09 | 1991-10-17 | Alcoa Deutschland Gmbh Verpackungswerke | Mecanisme vireur pour couvercles filetes et procede de montage de couvercles filetes sur des conteneurs |
DE4131910A1 (de) * | 1991-09-25 | 1993-04-08 | Heinlein Plastik Technik Gmbh | Vorrichtung und verfahren zum aufschrauben von schraubverschluessen |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10245879A1 (de) * | 2002-09-30 | 2004-04-08 | Elau Elektronik Automations Ag | Vorrichtung zum Anbringen von Schraubverschlüssen |
EP1524002A1 (fr) * | 2003-10-16 | 2005-04-20 | Groninger & Co. Gmbh | Dispositif de préhension avec limitation du couple pour visser une pièce dans un objet |
WO2007028509A1 (fr) * | 2005-09-09 | 2007-03-15 | Alcoa Deutschland Gmbh | Dispositif de fermeture pour mettre en place des bouchons a vis sur des recipients |
WO2007137737A1 (fr) * | 2006-05-31 | 2007-12-06 | Khs Ag | Procédé de détermination du couple final de fermeture lors de la fermeture de bouteilles ou de contenants similaires, et capsuleuse |
US8001748B2 (en) | 2006-05-31 | 2011-08-23 | Khs Ag | Method of testing, determining, and adjusting a final closing torque of a beverage bottle or container closing machine and an apparatus for performing the method |
DE102009045637A1 (de) * | 2009-10-13 | 2011-04-14 | Krones Ag | Verfahren und Vorrichtung zum Schraubverschließen von Gefäßen, insbesondere Flaschen |
CN102040180A (zh) * | 2009-10-13 | 2011-05-04 | 克朗斯股份公司 | 用于旋盖容器、特别是旋盖瓶的方法和装置 |
CN102040180B (zh) * | 2009-10-13 | 2012-07-25 | 克朗斯股份公司 | 用于旋盖容器的方法和装置 |
US8915052B2 (en) | 2009-10-13 | 2014-12-23 | Krones Ag | Method and device for screw capping vessels, in particular bottles |
CN103671921A (zh) * | 2013-11-07 | 2014-03-26 | 南京化工职业技术学院 | 端面摩擦扭矩可控的机械密封装置 |
Also Published As
Publication number | Publication date |
---|---|
DE59300313D1 (de) | 1995-08-03 |
EP0639529B1 (fr) | 1995-06-28 |
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