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EP1699729A1 - Device for screwing caps onto containers - Google Patents

Device for screwing caps onto containers

Info

Publication number
EP1699729A1
EP1699729A1 EP04819640A EP04819640A EP1699729A1 EP 1699729 A1 EP1699729 A1 EP 1699729A1 EP 04819640 A EP04819640 A EP 04819640A EP 04819640 A EP04819640 A EP 04819640A EP 1699729 A1 EP1699729 A1 EP 1699729A1
Authority
EP
European Patent Office
Prior art keywords
gripping tongs
cam
closing
closed
gripping
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
EP04819640A
Other languages
German (de)
French (fr)
Other versions
EP1699729B1 (en
Inventor
Horst Lang
Martina Wrede
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 EP1699729A1 publication Critical patent/EP1699729A1/en
Application granted granted Critical
Publication of EP1699729B1 publication Critical patent/EP1699729B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B67B3/2013—Closing bottles, jars or similar containers by applying caps by applying and rotating preformed threaded caps by carousel-type capping machines
    • B67B3/2033—Closing bottles, jars or similar containers by applying caps by applying and rotating preformed threaded caps by carousel-type capping machines comprising carousel co-rotating capping heads

Definitions

  • the invention relates to a device for screwing closure caps onto vessels according to the preamble of claim 1.
  • the invention is based on the object of providing a device for screwing closure caps onto vessels, in which the control for the gripping tongs does not require a stationary lifting curve and enables the gripping tongs to be reversed quickly and variably.
  • control members rotating with the closing heads in conjunction with the stationary stops enable the gripping tongs to be reversed precisely and quickly - without any stationary control cam.
  • the stops themselves can be easily implemented and are also easy to accommodate in sterile rooms.
  • Fig. 1 shows the side view of a capping head with open gripper, partially in section
  • Fig. 2 is a partial side view of a capping head according to Fig. 1 with the gripper closed
  • Fig. 3 is a partial side view of a capping head with a modified control member with the gripper closed
  • FIG. 4 shows a vertical section through the closing head according to FIG. 3
  • FIG. 5 shows the top view of the closing head according to FIG Fig. 6 is a plan view of another embodiment of a device for screwing on caps
  • FIG. 7 shows section A B according to FIG. 6.
  • the device according to FIGS. 1, 2 and 5 is designed for screwing plastic closure caps V with an internal thread onto containers G in the form of PET bottles for beverages. It has a rotor 1 rotating around a vertical axis of rotation D, on which a plurality of closing heads 2 are arranged which are distributed uniformly over the circumference and which rotate on a circular path K.
  • Each capping head 2 is rotatably mounted in a horizontal bearing bracket 10, which in turn is attached to a vertical column 11. This is recorded in a height-adjustable manner in the rotor 1 by means of a stroke curve, not shown, as indicated by the double arrow 12.
  • An electric servo motor 13 is also fastened on the bearing bridge 10 and, via gearwheels 14, 15, 16, sets the closing head 2 in rotation at predetermined regions of its circular path K with the rotor 1 at a predetermined speed and torque.
  • Each closing head 2 has at the lower end a gripping pliers 3 made up of several, in particular three, double-lever gripping arms 17, 18, each for a closing cap V.
  • the gripping arms 17, 18 can be pivoted about horizontal axes 19, 20 and are provided at the lower end with gripping jaws 21, 22 for a closure cap V.
  • the gripping arms 17, 18 have curved elongated holes 23, 24 into which bolts 25, 26 engage. These are attached to a control head 27 which can be moved in height by means of a rod 28 Capping head 2 is mounted.
  • a compression spring 29 is arranged on the vertical rod 28, which is supported at the lower end directly on the closing head 2 and at the upper end on a sleeve 30 fastened on the rod 28.
  • the compression spring 29 thus urges the control head 27 into its upper end position shown in FIG. 2, in which the bolts 25, 26 close or hold the gripping pliers 3 via the elongated holes 23, 24.
  • a closure cap V is firmly clamped between the gripping jaws 21, 22, so that it can be screwed onto a vessel G by the closing head 2 driven by the servo motor 13.
  • a vessel holder 31 is fastened to the rotor 1 under each closing head 2, in which the vessel G is clamped in a rotationally fixed manner.
  • a plunger 8 is mounted vertically movable in the closing head 2 concentrically with the rod 28. This is supported by a ball 32 on the rod 28, so that a rotational movement is possible relative to this.
  • the plunger 8 protrudes a bit upwards out of the closing head 2.
  • a control element 4 acting on the plunger 8 for the gripping tongs 3 in the form of a cam 7 is rotatably mounted on a vertical axis 33.
  • the axis 33 is laterally offset from the likewise vertically arranged tappet 8 and fastened on a U-shaped bearing block 34, which in turn is fastened on the upper side of the bearing bracket 10.
  • the control member 4 therefore makes both the vertical movement of the bearing bridge 10 and thus the closing head 2 and its orbital movement on the circular path K about the axis of rotation D.
  • the cam 7 of the control member 4 is designed as a space curve and shaped in such a way that in the open position shown in FIG. 1 it engages the plunger 8 and, via this, the rod 28 pushes into its lower end position.
  • the gripping tongs 3 are hereby opened or kept open and can thus be lowered onto a closure cap V to be gripped.
  • the sealing caps V are moved in the usual way by means of a feed 35 under the sealing heads 2 in a divisional manner.
  • the cam 7 of the control member 4 is shaped such that it releases the tappet 8 in the closed position shown in FIG. 2, so that the rod 28 can assume its upper end position under the influence of the compression spring 29.
  • the gripping tongs 3 are kept closed or closed, so that a closure cap V gripped by the gripping tongs 3 can be screwed onto a vessel G.
  • the open position of the control member 4 is offset by approximately 90 degrees from the closed position. Both positions are stabilized by the bearing friction on the axis 33 (closed position) and by the friction between the cam 7 and the plunger 8, caused by the compression spring 29 (open position).
  • Each control member 4 also has at the upper end a non-rotatably connected to its cam 7 angle lever 9. This interacts with two bolt-shaped stops 5, 6, which are arranged on columns S stationary on the circular path K of the capping heads 2.
  • the first stop 5 reverses the gripping tongs 3 from the open position shown in FIG. 1 to the closed position shown in FIG. 2 shortly after it has been placed on a closure cap V.
  • the second stop 6 controls the gripping pliers from the closed position shown in FIG. 2 to the one in FIG. 1 shown opening position shortly after the cap V has been screwed completely onto the container G.
  • the second stop 6 is indicated by dash-dotted lines in FIG. 5, since it is actually further away from the first stop 5.
  • the closing head 2 ' according to FIGS. 3 and 4 largely coincides with the closing head 2 according to FIGS. 1 and 2, with the exception of the control member 4'. Corresponding parts are marked with the same reference number and the addition '. Only the deviations are described below.
  • the control member 4' is rotatably mounted on its axis 33 'concentrically with the plunger 8'.
  • the plunger 8 ' carries at its upper end a horizontal bolt 36 which protrudes from the plunger 8' on both sides.
  • a roller 37 is rotatably mounted, which cooperates with the cam 7 'of the control member 4'. This results in better friction conditions than in the direct contact between the plunger 8 and the cam 7 of the closing head 2.
  • better self-locking is possible by incorporating slight depressions 38 into the cams 7 ', into which the rollers 37 are influenced the compression spring 29 'are pressed.
  • the bolt 36 is guided in elongated holes in the bearing block 34 'and therefore does not take part in the rotation of the closing head 2'.
  • the device according to FIGS. 6 and 7 differs from the device according to FIGS. 3 and 4 only in the design of the control member 4 ′′ and the stationary stops 5 ′ and 6 ′ interacting therewith.
  • the control member 4 ′′ here has a horizontal lever 38 , on the top two concentric cam rollers 39 are rotatably arranged with a vertical axis of rotation.
  • the stationary stops 5 'and 6' for opening and closing the gripping pliers 3 each have a horizontal plate 40, 41, on the undersides of which groove curves 42, 43 are formed.
  • the groove curves 42, 43 each have start and end regions which run tangentially to the circular path K and a central region which runs obliquely to the circular path K.
  • the tangential areas enable a smooth entry and exit of the cam rollers 39, while the inclined central area causes the lever 38 and thus the control element 4 "to be rotated by approximately 85 °.
  • the groove curves 42, 43 only extend over a small part of the circular path K and are arranged on the columns S so as to be adjustable independently of one another. This results in low manufacturing costs and easy adaptation to the operating conditions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Jars (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Wrapping Of Specific Fragile Articles (AREA)
  • Closures For Containers (AREA)
  • Lock And Its Accessories (AREA)

Abstract

Disclosed is a device for screwing caps (V) onto containers (G), comprising several closing heads (2) which revolve around a closed track (K) and each of which is provided with a set of controllable gripping tongs (3). A control unit (4) which revolves along with the gripping tongs (3) is allocated to each set of gripping tongs for the open position and the closed position of the associated gripping tongs (3). The revolving control units (4) can be reversed between the open position and the closed position by means of stationary stops (5, 6), allowing the gripping tongs to be reversed quickly and with precision while making it simple to adjust the open and closed position without using a stationary radial cam.

Description

Vorrichtung zum Aufschrauben von Verschlusskappen auf Gefäße Device for screwing caps on vessels
Beschreibungdescription
Die Erfindung betrifft eine Vorrichtung zum Aufschrauben von Verschlusskappen auf Gefäße gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for screwing closure caps onto vessels according to the preamble of claim 1.
Es ist bereits eine derartige Vorrichtung bekannt, bei der die Betätigung der Greifzangen für die Verschlüsse durch eine stationäre Steuerkurve erfolgt, in die mit den Greifzangen auf einer Kreisbahn umlaufende Kurvenrollen eingreifen (SU-PS 1 736 915) . Die Zeit für die Schließ- und Öffnungsbewegung der Greifzangen ist hierbei auf Grund der max. zulässigen Kurvensteigung relativ groß, was hohen Leistungen im Wege steht. Eine Veränderung der Schließ- bzw. Öffnungsposition der Greifzangen erfordert einen zeitraubenden Austausch der Steuerkurve . Auch die Fertigung und Montage der Steuerkurve ist sehr kostenintensiv, da ihr Verlauf exakt auf den Verlauf einer zweiten Steuerkurve abgestimmt sein muss, welche die Hubbewegung der Verschließköpfe definiert.Such a device is already known, in which the gripping tongs for the closures are actuated by a stationary control cam into which cam rollers rotating on a circular path engage with the gripping tongs (SU-PS 1 736 915). The time for the closing and opening movement of the gripping tongs is based on the max. permissible curve slope relatively large, which stands in the way of high performance. Changing the closing or opening position of the gripper tongs requires a time-consuming exchange of the control cam. The manufacture and assembly of the control cam is also very cost-intensive, since its course must be exactly coordinated with the course of a second control cam, which defines the stroke movement of the closing heads.
Der Erfindung liegt die Aufgabe zu Grunde, eine Vorrichtung zum Aufschrauben von Verschlusskappen auf Gefäße zu schaffen, bei der die Steuerung für die Greifzangen ohne stationäre Hubkurve auskommt und ein schnelles und variables Umsteuern der Greifzangen ermöglicht.The invention is based on the object of providing a device for screwing closure caps onto vessels, in which the control for the gripping tongs does not require a stationary lifting curve and enables the gripping tongs to be reversed quickly and variably.
Diese Aufgabe wird erfindungsgemäß durch die im Anspruch 1 angegebenen Merkmale gelöst.This object is achieved by the features specified in claim 1.
BESTATIGUNGSKOPIE Bei einer erfindungsgemäßen Vorrichtung erfolgt durch die mit den Verschließköpfen umlaufenden Steuerorgane in Verbindung mit den stationären Anschlägen ein präzises und schnelles Umsteuern der Greifzangen - ganz ohne stationäre Steuerkurve. Die Anschläge selbst können einfach umgesetzt werden und sind auch in Sterilräumen leicht unterzubringen.BESTATIGUNGSKOPIE In a device according to the invention, the control members rotating with the closing heads in conjunction with the stationary stops enable the gripping tongs to be reversed precisely and quickly - without any stationary control cam. The stops themselves can be easily implemented and are also easy to accommodate in sterile rooms.
Eine besonders einfache und zuverlässige Umsteuerung ergibt sich, wenn gemäß einer Weiterbildung der Erfindung die Schließposition und/oder die Öffnungsposition der Steuerorgane selbsthemmend stabilisiert ist.A particularly simple and reliable reversal results if, according to a development of the invention, the closed position and / or the open position of the control elements is stabilized in a self-locking manner.
Für die Ausbildung der Steuerorgane sind verschiedene Möglichkeiten denkbar. Besonders bevorzugt ist die Gestaltung nach den Unteransprüchen 3 bis 5.Various possibilities are conceivable for the training of the control organs. The design according to subclaims 3 to 5 is particularly preferred.
Im Nachstehenden werden zwei Ausführungsbeispiele der Erfindung anhand der Zeichnungen beschrieben. Es zeigen:Two exemplary embodiments of the invention are described below with reference to the drawings. Show it:
Fig. 1 die Seitenansicht eines Verschließkopfs mit geöffneter Greifzange, teilweise im SchnittFig. 1 shows the side view of a capping head with open gripper, partially in section
Fig. 2 die teilweise Seitenansicht eines Verschließkopfs nach Fig. 1 mit geschlossener GreifzangeFig. 2 is a partial side view of a capping head according to Fig. 1 with the gripper closed
Fig. 3 die teilweise Seitenansicht eines Verschließkopfs mit abgewandeltem Steuerorgan bei geschlossener GreifzangeFig. 3 is a partial side view of a capping head with a modified control member with the gripper closed
Fig. 4 einen senkrechten Schnitt durch den Verschließkopf nach Fig. 34 shows a vertical section through the closing head according to FIG. 3
Fig. 5 die Draufsicht auf den Verschließkopf nach Fig. l Fig. 6 die Draufsicht auf eine weitere Ausführung einer Vorrichtung zum Aufschrauben von Verschlusskappen5 shows the top view of the closing head according to FIG Fig. 6 is a plan view of another embodiment of a device for screwing on caps
Fig. 7 den Schnitt A B nach Fig. 6.7 shows section A B according to FIG. 6.
Die Vorrichtung nach den Fig. 1, 2 und 5 ist zum Aufschrauben von mit einem Innengewinde versehenen Verschlusskappen V aus Kunststoff auf Gefäße G in Form von PET-Flaschen für Getränke ausgebildet. Sie weist einen um eine senkrechte Drehachse D umlaufenden Rotor 1 auf, auf dem gleichmäßig über den Umfang verteilt mehrere Verschließköpfe 2 angeordnet sind, die auf einer Kreisbahn K umlaufen.The device according to FIGS. 1, 2 and 5 is designed for screwing plastic closure caps V with an internal thread onto containers G in the form of PET bottles for beverages. It has a rotor 1 rotating around a vertical axis of rotation D, on which a plurality of closing heads 2 are arranged which are distributed uniformly over the circumference and which rotate on a circular path K.
Jeder Verschließkopf 2 ist drehbar in einer horizontalen Lagerbrücke 10 gelagert, die ihrerseits auf einer senkrechten Säule 11 befestigt ist. Diese ist mittels einer nicht gezeigten Hubkurve gesteuert höhenbeweglich im Rotor 1 aufgenommen, wie durch den Doppelpfeil 12 angedeutet ist. Auf der Lagerbrücke 10 ist ferner ein elektrischer Servomotor 13 befestigt, der über Zahnräder 14, 15, 16 den Verschließkopf 2 an vorgegebenen Bereichen seiner Kreisbahn K mit dem Rotor 1 mit vorgegebener Drehzahl und vorgegebenen Drehmoment in Rotation versetzt.Each capping head 2 is rotatably mounted in a horizontal bearing bracket 10, which in turn is attached to a vertical column 11. This is recorded in a height-adjustable manner in the rotor 1 by means of a stroke curve, not shown, as indicated by the double arrow 12. An electric servo motor 13 is also fastened on the bearing bridge 10 and, via gearwheels 14, 15, 16, sets the closing head 2 in rotation at predetermined regions of its circular path K with the rotor 1 at a predetermined speed and torque.
Jeder Verschließkopf 2 weist am unteren Ende eine aus mehreren, insbesondere drei doppelhebelartigen Greifarmen 17, 18 aufgebaute Greifzange 3 für jeweils eine Verschlusskappe V auf. Die Greifarme 17, 18 sind um horizontale Achsen 19, 20 schwenkbar und am unteren Ende mit Greifbacken 21, 22 für eine Verschlusskappe V versehen. Am oberen Ende weisen die Greifarme 17, 18 kurvenförmige Langlöcher 23, 24 auf, in die Bolzen 25, 26 eingreifen. Diese sind an einem Steuerkopf 27 befestigt, der mittels einer Stange 28 höhenbeweglich im Verschließkopf 2 gelagert ist. Auf der senkrechten Stange 28 ist eine Druckfeder 29 angeordnet, die sich am unteren Ende direkt am Verschließkopf 2 und am oberen Ende an einer auf der Stange 28 befestigten Hülse 30 abstützt. Die Druckfeder 29 drängt so den Steuerkopf 27 in seine in Fig. 2 gezeigte obere Endposition, in der die Bolzen 25, 26 über die Langlöcher 23, 24 die Greifzange 3 schließen bzw. geschlossen halten. Dabei wird zwischen den Greifbacken 21, 22 eine Verschlusskappe V fest eingeklemmt, so dass sie durch den über den Servomotor 13 angetriebenen Verschließkopf 2 auf ein Gefäß G aufgeschraubt werden kann. Hierzu ist unter jedem Verschließkopf 2 ein Gefäßhalter 31 am Rotor 1 befestigt, in dem das Gefäß G drehfest eingespannt ist.Each closing head 2 has at the lower end a gripping pliers 3 made up of several, in particular three, double-lever gripping arms 17, 18, each for a closing cap V. The gripping arms 17, 18 can be pivoted about horizontal axes 19, 20 and are provided at the lower end with gripping jaws 21, 22 for a closure cap V. At the upper end, the gripping arms 17, 18 have curved elongated holes 23, 24 into which bolts 25, 26 engage. These are attached to a control head 27 which can be moved in height by means of a rod 28 Capping head 2 is mounted. A compression spring 29 is arranged on the vertical rod 28, which is supported at the lower end directly on the closing head 2 and at the upper end on a sleeve 30 fastened on the rod 28. The compression spring 29 thus urges the control head 27 into its upper end position shown in FIG. 2, in which the bolts 25, 26 close or hold the gripping pliers 3 via the elongated holes 23, 24. In this case, a closure cap V is firmly clamped between the gripping jaws 21, 22, so that it can be screwed onto a vessel G by the closing head 2 driven by the servo motor 13. For this purpose, a vessel holder 31 is fastened to the rotor 1 under each closing head 2, in which the vessel G is clamped in a rotationally fixed manner.
Konzentrisch zur Stange 28 ist im Verschließkopf 2 ein Stößel 8 höhenbeweglich gelagert. Diese stützt sich über eine Kugel 32 auf der Stange 28 ab, so dass relativ zu dieser eine Drehbewegung möglich ist. Nach oben hin ragt der Stößel 8 ein Stück aus dem Verschließkopf 2 heraus . In diesem Bereich ist ein auf den Stößel 8 einwirkendes Steuerorgan 4 für die Greifzange 3 in Form eines Nockens 7 auf einer senkrechten Achse 33 drehbar gelagert. Die Achse 33 ist seitlich gegenüber dem gleichfalls senkrecht angeordneten Stößel 8 versetzt und auf einem U-förmigen Lagerbock 34 befestigt, der seinerseits auf der Oberseite der Lagerbrücke 10 befestigt ist. Das Steuerorgan 4 macht daher sowohl die Höhenbewegung der Lagerbrücke 10 und damit des Verschließkopfs 2 als auch dessen Umlaufbewegung auf der Kreisbahn K um die Drehachse D mit.A plunger 8 is mounted vertically movable in the closing head 2 concentrically with the rod 28. This is supported by a ball 32 on the rod 28, so that a rotational movement is possible relative to this. The plunger 8 protrudes a bit upwards out of the closing head 2. In this area, a control element 4 acting on the plunger 8 for the gripping tongs 3 in the form of a cam 7 is rotatably mounted on a vertical axis 33. The axis 33 is laterally offset from the likewise vertically arranged tappet 8 and fastened on a U-shaped bearing block 34, which in turn is fastened on the upper side of the bearing bracket 10. The control member 4 therefore makes both the vertical movement of the bearing bridge 10 and thus the closing head 2 and its orbital movement on the circular path K about the axis of rotation D.
Der Nocken 7 des Steuerorgans 4 ist als Raumkurve ausgebildet und derart geformt, dass er in der in Fig. 1 gezeigten Öffnungsposition den Stößel 8 und über diesen die Stange 28 in ihre untere Endposition drückt. Hierdurch wird, wie bereits beschrieben, die Greifzange 3 geöffnet bzw. offen gehalten und kann so auf eine zu ergreifende Verschlusskappe V abgesenkt werden. Die Verschlusskappen V werden in üblicher Weise mittels einer Zuführung 35 teilungsgerecht unter die Verschließköpfe 2 bewegt.The cam 7 of the control member 4 is designed as a space curve and shaped in such a way that in the open position shown in FIG. 1 it engages the plunger 8 and, via this, the rod 28 pushes into its lower end position. As already described, the gripping tongs 3 are hereby opened or kept open and can thus be lowered onto a closure cap V to be gripped. The sealing caps V are moved in the usual way by means of a feed 35 under the sealing heads 2 in a divisional manner.
Weiter ist der Nocken 7 des Steuerorgans 4 derart geformt, dass er in der in Fig. 2 gezeigten Schließposition den Stößel 8 freigibt, so dass die Stange 28 unter dem Einfluss der Druckfeder 29 ihre obere Endposition einnehmen kann. Hierdurch wird, wie bereits beschrieben, die Greifzange 3 geschlossen bzw. geschlossen gehalten, so dass eine von der Greifzange 3 erfasste Verschlusskappe V auf ein Gefäß G aufgeschraubt werden kann.Furthermore, the cam 7 of the control member 4 is shaped such that it releases the tappet 8 in the closed position shown in FIG. 2, so that the rod 28 can assume its upper end position under the influence of the compression spring 29. In this way, as already described, the gripping tongs 3 are kept closed or closed, so that a closure cap V gripped by the gripping tongs 3 can be screwed onto a vessel G.
Die Öffnungsposition des Steuerorgans 4 ist gegenüber der Schließposition um ca. 90 Grad versetzt. Beide Positionen werden durch die Lagerreibung an der Achse 33 (Schließposition) und durch die Reibung zwischen Nocken 7 und Stößel 8, verursacht durch die Druckfeder 29, (Öffnungsposition) selbsthemmend stabilisiert.The open position of the control member 4 is offset by approximately 90 degrees from the closed position. Both positions are stabilized by the bearing friction on the axis 33 (closed position) and by the friction between the cam 7 and the plunger 8, caused by the compression spring 29 (open position).
Jedes Steuerorgan 4 weist ferner am oberen Ende einen drehfest mit seinem Nocken 7 verbundenen Winkelhebel 9 auf. Dieser wirkt mit zwei bolzenför igen Anschlägen 5, 6 zusammen, die auf Säulen S stationär an der Kreisbahn K der Verschließköpfe 2 angeordnet sind. Der erste Anschlag 5 steuert die Greifzange 3 aus der in Fig. 1 gezeigten Öffnungsposition in die in Fig. 2 gezeigte Schließposition um, kurz nachdem diese auf eine Verschlusskappe V aufgesetzt worden ist. Der zweite Anschlag 6 steuert die Greifzange aus der in Fig. 2 gezeigten Schließposition in die in Fig. 1 gezeigte Öffnungsposition um, kurz nachdem die Verschlusskappe V vollständig auf das Gefäß G aufgeschraubt worden ist. Der zweite Anschlag 6 ist in Fig. 5 strichpunktiert angedeutet, da er in Wirklichkeit weiter entfernt vom ersten Anschlag 5 ist.Each control member 4 also has at the upper end a non-rotatably connected to its cam 7 angle lever 9. This interacts with two bolt-shaped stops 5, 6, which are arranged on columns S stationary on the circular path K of the capping heads 2. The first stop 5 reverses the gripping tongs 3 from the open position shown in FIG. 1 to the closed position shown in FIG. 2 shortly after it has been placed on a closure cap V. The second stop 6 controls the gripping pliers from the closed position shown in FIG. 2 to the one in FIG. 1 shown opening position shortly after the cap V has been screwed completely onto the container G. The second stop 6 is indicated by dash-dotted lines in FIG. 5, since it is actually further away from the first stop 5.
Der Verschließkopf 2' nach Fig. 3 und 4 stimmt mit Ausnahme des Steuerorgans 4' weitestgehend mit dem Verschließkopf 2 nach Fig. 1 und 2 überein. Entsprechende Teile sind mit der gleichen Bezugsziffer und dem Zusatz ' markiert. Im Nachstehenden sind nur die Abweichungen beschrieben.The closing head 2 'according to FIGS. 3 and 4 largely coincides with the closing head 2 according to FIGS. 1 and 2, with the exception of the control member 4'. Corresponding parts are marked with the same reference number and the addition '. Only the deviations are described below.
Beim Verschließkopf 2' ist das Steuerorgan 4' auf seiner Achse 33' konzentrisch zum Stößel 8' drehbar gelagert. Der Stößel 8' trägt an seinem oberen Ende einen horizontalen Bolzen 36, der beiderseits aus dem Stößel 8' herausragt. Auf den herausragenden Enden des Bolzens 36 ist jeweils eine Rolle 37 drehbar gelagert, die mit dem Nocken 7' des Steuerorgans 4' zusammenwirkt. Hierdurch ergeben sich bessere Reibungsverhältnisse als bei dem direkten Kontakt zwischen dem Stößel 8 und dem Nocken 7 des Verschließkopfs 2. Außerdem ist eine bessere Selbsthemmung möglich, in dem in den Nocken 7' leichte Absenkungen 38 eingearbeitet sind, in welche die Rollen 37 unter dem Einfluss der Druckfeder 29' eingedrückt werden. Der Bolzen 36 ist in Langlöchern des Lagerbocks 34' geführt, und macht daher, die Rotation des Verschließkopfs 2' nicht mit.In the closing head 2 ', the control member 4' is rotatably mounted on its axis 33 'concentrically with the plunger 8'. The plunger 8 'carries at its upper end a horizontal bolt 36 which protrudes from the plunger 8' on both sides. On the protruding ends of the bolt 36, a roller 37 is rotatably mounted, which cooperates with the cam 7 'of the control member 4'. This results in better friction conditions than in the direct contact between the plunger 8 and the cam 7 of the closing head 2. In addition, better self-locking is possible by incorporating slight depressions 38 into the cams 7 ', into which the rollers 37 are influenced the compression spring 29 'are pressed. The bolt 36 is guided in elongated holes in the bearing block 34 'and therefore does not take part in the rotation of the closing head 2'.
Die Vorrichtung nach Fig. 6 und 7 unterscheidet sich von der Vorrichtung nach Fig. 3 und 4 lediglich durch die Gestaltung des Steuerorgans 4" und der damit zusammenwirkenden stationären Anschläge 5' und 6'. Das Steuerorgan 4" weist hier einen horizontalen Hebel 38 auf, an dessen Oberseite zwei konzentrische Kurvenrollen 39 mit senkrechter Drehachse drehbar angeordnet sind.The device according to FIGS. 6 and 7 differs from the device according to FIGS. 3 and 4 only in the design of the control member 4 ″ and the stationary stops 5 ′ and 6 ′ interacting therewith. The control member 4 ″ here has a horizontal lever 38 , on the top two concentric cam rollers 39 are rotatably arranged with a vertical axis of rotation.
Die stationären Anschläge 5' und 6' zum Öffnen bzw. Schließen der Greifzange 3 weisen hier jeweils eine horizontale Platte 40, 41 auf, an deren Unterseiten Nutkurven 42, 43 ausgebildet sind. Die Nutkurven 42, 43 weisen jeweils tangential zur Kreisbahn K verlaufende Anfangs- und Endbereiche sowie einen schräg zur Kreisbahn K verlaufenden Mittelbereich auf . Die tangentialen Bereiche ermöglichen einen stoßfreien Ein- und Auslauf der Kurvenrollen 39 während der schräge Mittelbereich die Verdrehung des Hebels 38 und damit des Steuerorgans 4" um ca. 85° bewirkt.The stationary stops 5 'and 6' for opening and closing the gripping pliers 3 each have a horizontal plate 40, 41, on the undersides of which groove curves 42, 43 are formed. The groove curves 42, 43 each have start and end regions which run tangentially to the circular path K and a central region which runs obliquely to the circular path K. The tangential areas enable a smooth entry and exit of the cam rollers 39, while the inclined central area causes the lever 38 and thus the control element 4 "to be rotated by approximately 85 °.
Hierdurch wird auch bei hohen Leistungen ein verschleißfreier und sanfter Ablauf der Umsteuerung der Greifzangen 3 bewirkt. Die Nutkurven 42, 43 erstrecken sich nur über einen kleinen Teil der Kreisbahn K und sind unabhängig voneinander verstellbar an den Säulen S angeordnet . Hierdurch ergeben sich günstige Fertigungskosten und eine einfache Anpassung an die Betriebsbedingungen. This results in a wear-free and smooth sequence of reversing the gripping tongs 3 even at high outputs. The groove curves 42, 43 only extend over a small part of the circular path K and are arranged on the columns S so as to be adjustable independently of one another. This results in low manufacturing costs and easy adaptation to the operating conditions.

Claims

Patentansprüche claims
1. Vorrichtung zum Aufschrauben von Verschlusskappen (V) auf Gefäße (G) mit mehreren auf einer geschlossenen Bahn umlaufenden Verschließköpfen (2) , von denen jeder eine gesteuert auf- und zu bewegbare Greifzange (3) aufweist, dadurch gekennzeichnet, dass jeder Greifzange (3) ein zusammen mit dieser umlaufendes Steuerorgan (4) zugeordnet ist, das relativ zur geschlossenen Bahn (K) zwischen einer die Greifzange (3) öffnenden Öffnungsposition und einer die Greifzange (3) schließenden Schließposition bewegbar ist und dass die Steuerorgane (4) durch stationäre Anschläge (5, 6) zwischen der Öffnungsposition und der Schließposition umsteuerbar sind.1. Device for screwing caps (V) onto vessels (G) with a plurality of sealing heads (2) rotating on a closed path, each of which has a gripping tongs (3) that can be opened and closed in a controlled manner, characterized in that each gripping tongs ( 3) is associated with a revolving control element (4) which can be moved relative to the closed path (K) between an opening position opening the gripping tongs (3) and a closing position closing the gripping tongs (3) and that the control elements (4) can be moved through stationary stops (5, 6) can be reversed between the open position and the closed position.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Schließposition und/oder die Öffnungsposition der Steuerorgane (4) selbsthemmend stabilisiert ist.2. Device according to claim 1, characterized in that the closed position and / or the open position of the control members (4) is stabilized in a self-locking manner.
3. Vorrichtung nach Anspruch 1 oder 2 , dadurch gekennzeichnet, dass das Steuerorgan (4) einen drehbar am Rotor (1) gelagerten Nocken (7) aufweist, der über einen verschiebbar im Verschließkopf (2) gelagerten Stößel (8) die zugehörige Greifzange (3) betätigt.3. Apparatus according to claim 1 or 2, characterized in that the control member (4) has a rotatably mounted on the rotor (1) cam (7) which via a slide in the closing head (2) mounted plunger (8) the associated gripping pliers ( 3) actuated.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass jedes Steuerorgan (4) einen drehfest mit dem Nocken (7) verbundenen Winkelhebel (9) aufweist, der mit den stationären Anschlägen (5, 6) zusammenwirkt. 4. The device according to claim 3, characterized in that each control member (4) has a non-rotatably connected to the cam (7) angle lever (9) which cooperates with the stationary stops (5, 6).
5. Vorrichtung nach Anspruch 3 und 4 , dadurch gekennzeichnet, dass die Drehachse des Nockens (7) und die Längsachse des Stößels (8) parallel zur Drehachse (D) des Rotors (1) angeordnet sind und der Nocken (7) als Raumkurve ausgebildet ist.5. The device according to claim 3 and 4, characterized in that the axis of rotation of the cam (7) and the longitudinal axis of the plunger (8) are arranged parallel to the axis of rotation (D) of the rotor (1) and the cam (7) is designed as a space curve is.
6. Vorrichtung nach einem der Ansprüche 1 bis 5 , dadurch gekennzeichnet, dass die stationären Anschläge (5', 6') schräg zur geschlossenen Bahn (K) der Verschließköpfe (2) verlaufende Kurvenstücke (42, 43) aufweisen.6. Device according to one of claims 1 to 5, characterized in that the stationary stops (5 ', 6') obliquely to the closed path (K) of the closing heads (2) have curved pieces (42, 43).
7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Steuerorgane (4) mit die Kurvenstücke (42, 43) abtastenden Rollen (39) oder dgl . versehen sind. 7. The device according to claim 6, characterized in that the control members (4) with the curve pieces (42, 43) scanning rollers (39) or the like. are provided.
EP04819640A 2003-12-02 2004-12-01 Device for screwing caps onto containers Expired - Lifetime EP1699729B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10356222A DE10356222A1 (en) 2003-12-02 2003-12-02 Device for screwing caps onto vessels
PCT/EP2004/013599 WO2005054113A1 (en) 2003-12-02 2004-12-01 Device for screwing caps onto containers

Publications (2)

Publication Number Publication Date
EP1699729A1 true EP1699729A1 (en) 2006-09-13
EP1699729B1 EP1699729B1 (en) 2007-02-14

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EP04819640A Expired - Lifetime EP1699729B1 (en) 2003-12-02 2004-12-01 Device for screwing caps onto containers

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US (1) US20070068117A1 (en)
EP (1) EP1699729B1 (en)
AT (1) ATE353851T1 (en)
DE (2) DE10356222A1 (en)
WO (1) WO2005054113A1 (en)

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Also Published As

Publication number Publication date
US20070068117A1 (en) 2007-03-29
WO2005054113A1 (en) 2005-06-16
DE10356222A1 (en) 2005-06-30
ATE353851T1 (en) 2007-03-15
EP1699729B1 (en) 2007-02-14
DE502004002930D1 (en) 2007-03-29

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