EP2218575B1 - Packaging machine with a work station comprising an electrical lifting unit with a coarse and a fine stroke - Google Patents
Packaging machine with a work station comprising an electrical lifting unit with a coarse and a fine stroke Download PDFInfo
- Publication number
- EP2218575B1 EP2218575B1 EP20100000988 EP10000988A EP2218575B1 EP 2218575 B1 EP2218575 B1 EP 2218575B1 EP 20100000988 EP20100000988 EP 20100000988 EP 10000988 A EP10000988 A EP 10000988A EP 2218575 B1 EP2218575 B1 EP 2218575B1
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- EP
- European Patent Office
- Prior art keywords
- packaging machine
- machine according
- eccentric shaft
- electric motor
- lifting
- 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.)
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Links
- 238000004806 packaging method and process Methods 0.000 title claims description 33
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 240000006829 Ficus sundaica Species 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 238000003856 thermoforming Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
- B65B31/02—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas
- B65B31/021—Filling, closing, or filling and closing, containers or wrappers in chambers maintained under vacuum or superatmospheric pressure or containing a special atmosphere, e.g. of inert gas the containers or wrappers being interconnected
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/10—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by toggle mechanism
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
- B30B1/268—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks using a toggle connection between driveshaft and press ram
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
- B65B47/04—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved by application of mechanical pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B65/00—Details peculiar to packaging machines and not otherwise provided for; Arrangements of such details
- B65B65/02—Driving gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/04—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for severing webs, or for separating joined packages
Definitions
- the present invention relates to a packaging machine with a workstation having an electric hoist with coarse and fine stroke.
- a packaging machine with a hoist is out of the DE 42 16 210 A1 known.
- the hoist has a toggle linkage for the coarse stroke and in addition a pneumatically operated diaphragm device for the fine stroke, which ensures a high closing pressure.
- the fine stroke is required to ensure different end positions of the tool lower part for different film thicknesses.
- the pneumatic membrane device has a relatively high air consumption, which requires a corresponding amount of energy.
- Another packaging machine is out of the DE 103 51 567 A1 known in the u. A. for reasons of hygiene an electrically operated linear drive is used instead of a pneumatic lifting device. From the EP-0 895 933 A1 is a packaging machine is known which has a power lift.
- the DE 10 2006 040 807 A1 discloses a packaging machine with a sealing station, which has an electromotive hoist with a toggle lever drive.
- the EP 1 524 087 A1 discloses a forming station with an electromotive hoist for processing a film web.
- the EP 1 452 301 A2 shows a generic knee lever press, wherein a toggle lever is arranged on a formed as an eccentric part of a shaft.
- the EP 1 842 659 A2 shows a press with several spindle drives.
- thermoforming machine with reference to the figures.
- thermoforming machine has according to the Fig. 1 u. A. a bottom film feeder 21, a forming station 22 as a first workstation, a filling station 23, a top film feeder 25, a sealing station 28 as a second workstation and a cutting station 27 as a third workstation.
- thermoforming machine The operation of the thermoforming machine is as follows: First, a lower film 18 is removed from the lower film feeder 21 from a lower film roll 26 and fed to the forming station 22. In the forming station 22, the lower film 18 is heated in a mold and deep-drawn into packing pots P. The packing wells P can be provided in one or more tracks in the lower film 18. Subsequently, the lower film 18 is advanced into the filling station 23, in which the resulting packing pores P are filled by hand or automatically with packaged goods 24. In the next step, the deep-drawn and filled lower film 18 is advanced into the sealing station 28. In the sealing station 28, an upper film 19 is placed over the lower film 18, and preferably the air is sucked or evacuated in the interior of the package therein and optionally fumigated. Thereafter, the package is sealed by welding the top film 19 along a sealing edge of the package to the bottom film 18 by applying heat and pressure.
- the lower film 18 and the upper film 19 are cut to the package size. This can be done either in the sealing station 28 or, as in the illustrated embodiment, in the transverse and longitudinal cutting stations 27 and 29 arranged behind it.
- the forming station 22, the sealing station 28 and the cutting station 27 each serve as a workstation of the packaging machine.
- the Fig. 2 shows a schematic front view of the workstation or the molding station 22 of the packaging machine according to a first embodiment of the present invention.
- the work station 22 has a stationary mold half 1 and a movable mold half 2.
- the stationary mold half 1 is attached to upper ends of guide rails 14.
- the movable mold half 2 is movable via guide bushes 15 along the guide rails 14 and can therefore be moved towards and away from the stationary mold half 1.
- the movable mold half 2 is moved by an electric hoist 3 to the stationary mold half 1 and away from it.
- the electric hoist 3 consists of a first lifting device 4, 5 (s. Fig. 7 ) for effecting a stroke with a large stroke (coarse stroke) and a second lifting device 6, 7 (s. Fig. 7 ) for effecting a stroke with a small stroke (fine lift).
- the second lifting device 6, 7 generates a force which presses the movable mold half 2 against the stationary mold half 1. This force is also called closing force.
- the first lifting device 4, 5 consists of a first electric motor 4 (s. Fig. 7
- the toggle linkage 5 consists of a first lever 51 and a second lever 52.
- a lower end of the first lever 51 is fixed to a pivot shaft 53 which in turn is connected to an output shaft of a first electric motor 4 (see FIG. Fig. 7 ) connected is.
- the first electric motor 4 is attached to a frame 54 of the workstation 22 or the packaging machine.
- a rotation of the output shaft of the first electric motor 4 causes a pivoting of the first lever 51.
- a countershaft transmission (not shown) is provided between the output shaft of the first electric motor 4 and the first lever 51.
- An upper end of the second lever 52 is hinged to the movable mold half 2.
- An upper end of the first lever 51 and a lower end of the second lever 52 are rotatably connected together by an eccentric shaft 7, which will be described later in more detail.
- the eccentric shaft 7 serves as an axis about which the first lever 51 and the second lever 52 rotate relative to each other.
- the thus constructed first lifting device 4, 5 causes the large stroke of the movable mold half 2, which is reached when a dead center of the toggle linkage 5 is reached.
- the Fig. 3 shows that the toggle linkage 5 has a stop 9 immediately behind the dead center. The toggle linkage 5 can be kept stable in this position.
- FIGS. 2 to 6a . 7 8th show u. A. the structure and function of the second lifting device 6, 7 according to the first embodiment.
- the second lifting device 6, 7 has a second electric motor 6 (s. Fig. 7 ), which is fixed to the frame 54 of the workstation 22 and the packaging machine, and the eccentric shaft 7, which connects the first lever 51 with the second lever 52 of the toggle linkage 5.
- the eccentric shaft 7 has a first shaft portion 71 which is rotatably mounted in a bore in the first lever 51 of the toggle linkage 5.
- the eccentric shaft 7 also has a second shaft portion 72 disposed eccentric to the first shaft portion 71.
- the second shaft portion 72 is rotatably mounted in a bore in the second lever 52 of the toggle linkage 5.
- the first shaft section 71 is connected via a first gear 11, 16, 17 (s. FIGS. 7 and 8th ) is connected to an output shaft of the second electric motor 6.
- the first gear 11, 16, 17 consists of a pinion 11, which is fixedly connected to the output shaft of the second electric motor 6, a large gear 16 which is mounted on the pivot shaft 53 and the pinion 11 meshes, and a small gear 17, that the large gear 16 meshes.
- the small gear 17 is fixedly connected to the first shaft portion 71 of the eccentric shaft 7.
- the second electric motor 6 drives the large gear 16 via the pinion 11.
- the large gear 16 meshes with the small gear 17. Rotation of the small gear 17 causes identical rotation of the first shaft portion 71 of the eccentric shaft 7. This results in eccentric rotation of the second shaft portion 72 of the eccentric shaft 7.
- the second electric motor 6 can move synchronously with the first electric motor 4, so that no stroke is induced by the eccentric shaft 7 when the first electric motor 4 rotates.
- the second electric motor 6 can be partially moved simultaneously with the first electric motor 4, preferably at the end of the coarse stroke, to its target position.
- the closing force of the tool halves 1, 2 is adjustable at the same time.
- the desired end position of the eccentric shaft 7 may e.g. be stored in a table or a formula of a control program, e.g. includes the film thickness and the closing force as parameters.
- the packaging machine may additionally comprise a device for detecting and regulating the closing force between the stationary mold half 1 and the movable mold half 2. This device can regulate the closing force to a certain value. As a result, in particular deformations of the hoist 3 and film thickness differences can be readjusted.
- a second embodiment of the present invention is in Fig. 6b shown.
- the Fig. 6b shows similar to the Fig. 6a in the level VI-VI of the Fig. 1 a schematic side view of a portion of the hoist 3 of the forming station 22 of the packaging machine, with left the eccentric shaft 7 in the lower Position and right the eccentric shaft 7 in the upper position.
- the first shaft portion 71 is directly connected to the second shaft portion 72 of the eccentric shaft 7 is in the second embodiment in the Fig. 6b a second gear 10 is provided between the first shaft portion 71 and the second shaft portion 72 of the eccentric shaft 7.
- the second gear 10 is arranged in this way between the second electric motor 6 and the second shaft portion 72 of the eccentric shaft 7, which forms an output of the eccentric shaft 7 here.
- the second transmission 10 may be a cycloidal transmission. Cycloidal transmissions belong to the category of eccentric gear units.
- the first shaft portion 71 of the eccentric shaft 7 drives a gear eccentric (not to be confused with the eccentric shaft 7) of the cycloidal gear 10, which in turn drives an internal gear with n teeth of the cycloidal gear 10, which rolls in a ring gear with n + 1 teeth of the cycloidal gear 10 , Per revolution of the internal gear, the ring gear moves on a tooth portion on, whereby the second shaft portion 72 of the eccentric shaft 7 is rotated. This results in a large reduction, eg 40: 1.
- the eccentric shaft 7 requires an output with half a revolution, which can be generated at a reduction ratio of 40: 1 by 20 revolutions of the first shaft portion 71 of the eccentric shaft 7.
- the operation of the hoist 3 is based on the FIGS. 2 to 8 described.
- the movable mold half 2 is also in the lower position and removed from the stationary mold half 1.
- the Fig. 5 shows the resulting end position, with both the toggle linkage 5 and the eccentric shaft 7 are in the upper positions.
- the second stroke movement of the eccentric shaft 7 takes place substantially after the first stroke movement
- the second stroke movement can take place substantially simultaneously with the first stroke movement, so that the entire stroke movement can be carried out more quickly.
- first and second embodiments in each case a first electric motor 4 for the first lifting device 4, 5 and a second electric motor 6 for the second lifting device 6, 7 are used.
- the first and second lifting devices may use an identical electric motor (not shown).
- This electric motor is then preferably arranged on the pivot shaft 53 and is preferably coupled by couplings with the first and second lifting device. It is possible that the first lifting movement is carried out by the toggle linkage 5 substantially simultaneously with the second stroke movement through the eccentric shaft 7.
- the first lifting device 4, 5 is formed by the first electric motor 4 and the toggle linkage 5.
- the first lifting device may comprise the first electric motor 4 and a linear drive instead of the toggle linkage 5.
- the first lifting device may have a linear drive in addition to the toggle linkage 5. The linear drive must withstand the closing force; This can be effected by a brake on a spindle of the linear drive.
- toggle lever systems 5 may also be a plurality of toggle lever systems 5 and / or more than a first lifting device 4, 5 for the large stroke to achieve the desired positioning torques and times for larger moving masses.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Transmission Devices (AREA)
Description
Die vorliegende Erfindung bezieht sich auf eine Verpackungsmaschine mit einer Arbeitsstation, die ein elektrisches Hubwerk mit Grob- und Feinhub aufweist.The present invention relates to a packaging machine with a workstation having an electric hoist with coarse and fine stroke.
Eine Verpackungsmaschine mit einem Hubwerk ist aus der
Die
Es ist die Aufgabe der vorliegenden Erfindung, eine Verpackungsmaschine mit mindestens einer Arbeitsstation vorzusehen, die ein Hubwerk aufweist, das unter Beibehaltung eines guten energetischen Wirkungsgrades für eine sehr hohe Schließkraft sorgen kann.It is the object of the present invention to provide a packaging machine with at least one workstation having a hoist that can provide a very high closing force while maintaining a good energy efficiency.
Diese Aufgabe wird durch die Verpackungsmaschine mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.This object is achieved by the packaging machine with the features of
Weitere Merkmale und Vorteile der vorliegenden Erfindung werden aus der nachfolgenden Figurenbeschreibung ersichtlich.Further features and advantages of the present invention will become apparent from the following description of the figures.
Es zeigen:
- Fig. 1
- eine schematische Ansicht von wesentlichen Teilen einer Verpackungsmaschine gemäß der vorliegenden Erfindung;
- Fig. 2
- eine schematische Vorderansicht einer Arbeitsstation der Verpackungsmaschine gemäß einem ersten Ausführungsbeispiel der vorliegenden Erfindung, wobei das Kniehebelgestänge in einer unteren Position ist;
- Fig. 3
- eine schematische Vorderansicht der Arbeitsstation der Verpackungsmaschine gemäß dem ersten Ausführungsbeispiel der vorliegenden Erfindung, wobei das Kniehebelgestänge in einer Position unmittelbar hinter dem Totpunkt ist;
- Fig. 4
- eine schematische Vorderansicht der Arbeitsstation der Verpackungsmaschine gemäß dem ersten Ausführungsbeispiel der vorliegenden Erfindung, wobei die Exzenterwelle in einer unteren Position ist;
- Fig. 5
- eine schematische Vorderansicht der Arbeitsstation der Verpackungsmaschine gemäß dem ersten Ausführungsbeispiel der vorliegenden Erfindung, wobei die Exzenterwelle in einer oberen Position ist;
- Fig. 6a
- in einer Ebene VI-VI der
Fig. 1 eine schematische Seitenansicht eines Abschnitts des Hubwerks der Arbeitsstation der Verpackungsmaschine gemäß dem ersten Ausführungsbeispiel der vorliegenden Erfindung, wobei links die Exzenterwelle in der unteren Position und rechts die Exzenterwelle in der oberen Position ist; - Fig. 6b
- in einer Ebene VI-VI der
Fig. 1 eine schematische Seitenansicht eines Abschnitts des Hubwerks der Arbeitsstation der Verpackungsmaschine gemäß einem zweiten Ausführungsbeispiel der vorliegenden Erfindung, wobei links die Exzenterwelle in der unteren Position und rechts die Exzenterwelle in der oberen Position ist; - Fig. 7
- eine schematische Seitenansicht der Arbeitsstation der Verpackungsmaschine gemäß dem ersten Ausführungsbeispiel der vorliegenden Erfindung, wobei das Kniehebelgestänge in der oberen Position ist;
- Fig. 8
- eine schematische Vorderansicht einer Arbeitsstation der Verpackungsmaschine gemäß einem zweiten Ausführungsbeispiel der vorliegenden Erfindung, wobei das Kniehebelgestänge in der oberen Position ist.
- Fig. 1
- a schematic view of essential parts of a packaging machine according to the present invention;
- Fig. 2
- a schematic front view of a workstation of the packaging machine according to a first embodiment of the present invention, wherein the toggle linkage is in a lower position;
- Fig. 3
- a schematic front view of the workstation of the packaging machine according to the first embodiment of the present invention, wherein the toggle linkage is in a position immediately behind the dead center;
- Fig. 4
- a schematic front view of the workstation of the packaging machine according to the first embodiment of the present invention, wherein the eccentric shaft is in a lower position;
- Fig. 5
- a schematic front view of the workstation of the packaging machine according to the first embodiment of the present invention, wherein the eccentric shaft is in an upper position;
- Fig. 6a
- in a level VI-VI of the
Fig. 1 a schematic side view of a portion of the hoist of the workstation of the packaging machine according to the first embodiment of the present invention, with left the eccentric shaft in the lower position and right is the eccentric shaft in the upper position; - Fig. 6b
- in a level VI-VI of the
Fig. 1 a schematic side view of a portion of the hoist of the workstation of the packaging machine according to a second embodiment of the present invention, wherein on the left the eccentric shaft in the lower position and the right is the eccentric shaft in the upper position; - Fig. 7
- a schematic side view of the workstation of the packaging machine according to the first embodiment of the present invention, wherein the toggle linkage is in the upper position;
- Fig. 8
- a schematic front view of a workstation of the packaging machine according to a second embodiment of the present invention, wherein the toggle linkage is in the upper position.
Im Folgenden werden mit Bezug auf die Figuren Ausführungsbeispiele der Erfindung anhand einer Tiefziehmaschine beschrieben.In the following, embodiments of the invention will be described with reference to a thermoforming machine with reference to the figures.
Die Tiefziehmaschine hat gemäß der
Der Betrieb der Tiefziehmaschine ist folgendermaßen: Zunächst wird eine Unterfolie 18 von der Unterfolienzuführung 21 von einer Unterfolienrolle 26 abgezogen und der Formstation 22 zugeführt. In der Formstation 22 wird die Unterfolie 18 in einem Formwerkzeug erwärmt und zu Packungsmulden P tiefgezogen. Die Packungsmulden P können ein- oder mehrspurig in der Unterfolie 18 vorgesehen werden. Anschließend wird die Unterfolie 18 in die Füllstation 23 vorgeschoben, in der die entstandenen Packungsmulden P von Hand oder automatisch mit Verpackungsgut 24 gefüllt werden. Im nächsten Schritt wird die tiefgezogene und gefüllte Unterfolie 18 in die Siegelstation 28 vorgeschoben. In der Siegelstation 28 wird eine Oberfolie 19 über die Unterfolie 18 gelegt, und vorzugsweise wird die Luft im Inneren der darin befindlichen Packung abgesaugt bzw. evakuiert und ggf. begast. Danach wird die Packung versiegelt, indem die Oberfolie 19 entlang eines Siegelrands der Packung mit der Unterfolie 18 durch Aufbringen von Wärme und Druck verschweißt wird.The operation of the thermoforming machine is as follows: First, a
Anschließend werden die Unterfolie 18 und die Oberfolie 19 auf die Packungsgröße zugeschnitten. Dies kann entweder in der Siegelstation 28 oder, wie im dargestellten Ausführungsbeispiel, in den dahinter angeordneten Quer- und Längsschneidstationen 27 und 29 erfolgen.Subsequently, the
Die Formstation 22, die Siegelstation 28 und die Schneidstation 27 dienen jeweils als Arbeitsstation der Verpackungsmaschine.The forming
Die
Die Arbeitstation 22 hat eine ortsfeste Werkzeughälfte 1 und eine bewegbare Werkzeughälfte 2. Die ortsfeste Werkzeughälfte 1 ist an oberen Enden von Führungsholmen 14 befestigt. Die bewegbare Werkzeughälfte 2 ist über Führungsbuchsen 15 entlang den Führungsholmen 14 bewegbar und kann daher zu der ortsfesten Werkzeughälfte 1 hin und von dieser weg bewegt werden.The
Die bewegbare Werkzeughälfte 2 wird durch ein elektrisches Hubwerk 3 zu der ortsfesten Werkzeughälfte 1 hin und von dieser weg bewegt. Das elektrische Hubwerk 3 besteht aus einer ersten Hubvorrichtung 4, 5 (s.
Die erste Hubvorrichtung 4, 5 besteht aus einem ersten Elektromotor 4 (s.
Ein oberes Ende des zweiten Hebels 52 ist an der bewegbaren Werkzeughälfte 2 angelenkt. Ein oberes Ende des ersten Hebels 51 und ein unteres Ende des zweiten Hebels 52 sind durch eine Exzenterwelle 7 drehbar miteinander verbunden, die später in weiteren Einzelheiten beschrieben wird. Die Exzenterwelle 7 dient als eine Achse, um die sich der erste Hebel 51 und der zweite Hebel 52 relativ zueinander drehen.An upper end of the
Die so aufgebaute erste Hubvorrichtung 4, 5 bewirkt den großen Hub der bewegbaren Werkzeughälfte 2, der dann erreicht ist, wenn ein Totpunkt des Kniehebelgestänges 5 erreicht ist. Die
Die
Einzelheiten der Exzenterwelle 7 sind in den
Der erste Wellenabschnitt 71 ist über ein erstes Getriebe 11, 16, 17 (s.
Falls die Trägheit des zweiten Elektromotors 6 groß ist, würde das große Zahnrad 16 still stehen, auch wenn sich das Kniehebelgestänge 5 bewegt. Dadurch dreht sich das kleine Zahnrad 17, und ein bestimmter Hub der bewegbaren Werkzeughälfte 2 wird durch die Exzenterwelle 7 induziert. Sollte dies nicht erwünscht sein, kann sich der zweite Elektromotor 6 synchron mit dem ersten Elektromotor 4 bewegen, so dass kein Hub durch die Exzenterwelle 7 induziert wird, wenn sich der erste Elektromotor 4 dreht. Alternativ kann der zweite Elektromotor 6 teilweise zeitgleich mit dem ersten Elektromotor 4, vorzugsweise am Ende des Grobhubs, zu seiner Zielposition bewegt werden.If the inertia of the second
Wenn die Abtriebswelle des zweiten Elektromotors 6 gedreht wird, dreht sich der zweite Wellenabschnitt 72 der Exzenterwelle 7 folglich exzentrisch zum ersten Wellenabschnitt 71 mit der Untersetzung des ersten Getriebes 11, 16, 17. Infolge dessen wird der zweite Hebel 52 des Kniehebelgestänges 5 relativ zum ersten Hebel 51 angehoben oder abgesenkt. Der durch die Exzenterwelle 7 bewirkte Hub des zweiten Hebels 52 ist relativ klein, jedoch wird durch diesen Hub eine sehr große Schließkraft erzeugt, die schließlich die bewegbare Werkzeughälfte 2 gegen die ortsfeste Werkzeughälfte 1 drückt. Der maximale Hub der Exzenterwelle 7 wird in einer halben Umdrehung erreicht, d.h. bei einer Drehung um 180°. Der tatsächliche Hub der Exzenterwelle 7 ist einstellbar, indem die Endposition der Exzenterwelle 7 zwischen 0 und 180° eingestellt wird. Mit dem Hub der Exzenterwelle 7 ist gleichzeitig die Schließkraft der Werkzeughälften 1, 2 einstellbar. Die gewünschte Endposition der Exzenterwelle 7 kann z.B. in einer Tabelle oder einer Formel eines Steuerprogramms abgelegt sein, die z.B. die Folienstärke und die Schließkraft als Parameter beinhaltet. Die Verpackungsmaschine kann zusätzlich eine Vorrichtung zum Erfassen und Regeln der Schließkraft zwischen der ortsfesten Werkzeughälfte 1 und der bewegbaren Werkzeughälfte 2 aufweisen. Diese Vorrichtung kann die Schließkraft auf einen bestimmten Wert regeln. Hierdurch lassen sich insbesondere Verformungen des Hubwerks 3 und Foliendickenunterschiede nachregeln.As a result, when the output shaft of the second
Ein zweites Ausführungsbeispiel der vorliegenden Erfindung ist in der
Der Betrieb des Hubwerks 3 wird anhand der
In der Ausgangssituation gemäß der
Nun wird die Abtriebswelle des ersten Elektromotors 4 in Richtung des Pfeils in der
Nun wird die Abtriebswelle des zweiten Elektromotors 6 in Richtung der Pfeils in den
Die
Im dargestellten Ausführungsbeispiel erfolgt die zweite Hubbewegung der Exzenterwelle 7 im wesentlichen nach der ersten Hubbewegung des Kniehebelgestänges 5. Alternativ kann die zweite Hubbewegung im Wesentlichen gleichzeitig mit der ersten Hubbewegung erfolgen, so dass die gesamte Hubbewegung schneller durchgeführt werden kann.In the illustrated embodiment, the second stroke movement of the
Der Schutzumfang beschränkt sich nicht auf die dargestellten Ausführungsbeispiele, sondern er umfasst weitere Änderungen und Abwandlungen, sofern diese innerhalb des durch die beigefügten Ansprüche definierten Umfangs fallen.The scope of protection is not limited to the illustrated embodiments, but it includes further changes and modifications, provided that they fall within the scope defined by the appended claims.
Bei dem ersten und zweiten Ausführungsbeispiel werden jeweils ein erster Elektromotor 4 für die erste Hubvorrichtung 4, 5 und ein zweiter Elektromotor 6 für die zweite Hubvorrichtung 6, 7 verwendet. Gemäß einem nicht beanspruchten Ausführungsbeispiel können die erste und die zweite Hubvorrichtung einen identischen Elektromotor (nicht gezeigt) verwenden. Der Vorteil dieser Konfiguration ist die geringe Anzahl der beweglichen Teile. Dieser Elektromotor ist dann vorzugsweise an der Schwenkwelle 53 angeordnet und wird vorzugsweise durch Kupplungen mit der ersten und zweiten Hubvorrichtung gekoppelt. Dabei ist es möglich, dass die erste Hubbewegung durch das Kniehebelgestänge 5 im Wesentlichen gleichzeitig mit der zweiten Hubbewegung durch die Exzenterwelle 7 erfolgt.In the first and second embodiments, in each case a first
In den dargestellten Ausführungsbeispielen ist die erste Hubvorrichtung 4, 5 durch den ersten Elektromotor 4 und das Kniehebelgestänge 5 gebildet. Gemäß einem nicht beanspruchten Ausführungsbeispiel kann die erste Hubvorrichtung den ersten Elektromotor 4 und einen Linearantrieb anstelle zum Kniehebelgestänge 5 aufweisen. Alternativ kann die erste Hubvorrichtung einen Linearantrieb zusätzlich zum Kniehebelgestänge 5 aufweisen. Dabei muss der Linearantrieb der Schließkraft standhalten; dies kann durch eine Bremse an einer Spindel des Linearantriebs bewirkt werden.In the illustrated embodiments, the
Es können auch mehrere Kniehebelsysteme 5 vorhanden sein und/oder mehr als eine erste Hubvorrichtung 4, 5 für den großen Hub, um bei größeren bewegten Massen die gewünschten Positioniermomente und -zeiten zu erreichen.There may also be a plurality of
Claims (10)
- A packaging machine with at least one work station (22,27,28), wherein the work station (22,27,28) has a stationary mould half (1) and a movable mould half (2) which is moved by an electric lifting mechanism (3) relative to the stationary mould half (1), and
the electric lifting mechanism (3) has a first lifting device (4,5) for effecting a first lifting movement with large travel,
wherein the first lifting device (4,5) has a first electric motor (4) and a toggle lever rod system (5), wherein the large travel is reached substantially at a dead-centre position of the toggle lever rod system (5),
characterised in that
the lifting mechanism (3) has a second lifting device (6,7) for effecting a second lifting movement with small travel,
the second lifting device (6,7) generates a force which presses the movable mould half (2) towards the stationary mould half (1),
the second lifting device (6,7) has a second electric motor (6) and an eccentric shaft (7), and
the eccentric shaft (7) serves as an axis for the toggle lever rod system (5). - A packaging machine according to Claim 1,
wherein the first electric motor (4) is connected to the toggle lever rod system (5) via an auxiliary transmission. - A packaging machine according to Claim 1 or 2,
wherein the toggle lever rod system (5) has a stop member (9) immediately after or before the dead-centre position. - A packaging machine according to Claim 1,
wherein the lifting device also has a linear drive. - A packaging machine according to Claim 1,
wherein a first transmission (11,16,17) is disposed between the second electric motor (6) and the eccentric shaft (7). - A packaging machine according to Claim 5,
wherein
the eccentric shaft (7) has a first shaft section (71) and a second shaft section (72), which is arranged eccentrically in relation to the first shaft section (71), and a second transmission (10) is disposed between the first and second shaft sections (71,72) of the eccentric shaft (7). - A packaging machine according to any one of the preceding Claims,
wherein the first lifting movement takes place at the same time as the second lifting movement. - A packaging machine according any one of Claims 1 to 6,
wherein the second lifting movement takes place substantially after the first lifting movement. - A packaging machine according to any one of the preceding Claims,
further having a device for determining the closing force between the stationary mould half (1) and the movable mould half (2) and for regulating the closing force to a given value. - A deep-drawing machine as a packaging machine according to any one of the preceding Claims,
wherein the work station (22,27,28) is a moulding station (22), a sealing station (28) or a cutting station (27).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200910008452 DE102009008452B3 (en) | 2009-02-11 | 2009-02-11 | Packaging machine with a workstation having an electric hoist with coarse and fine stroke |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2218575A1 EP2218575A1 (en) | 2010-08-18 |
EP2218575B1 true EP2218575B1 (en) | 2013-01-02 |
Family
ID=42133522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100000988 Active EP2218575B1 (en) | 2009-02-11 | 2010-02-01 | Packaging machine with a work station comprising an electrical lifting unit with a coarse and a fine stroke |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2218575B1 (en) |
DE (1) | DE102009008452B3 (en) |
ES (1) | ES2400613T3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3998218A1 (en) * | 2017-10-12 | 2022-05-18 | Weber Maschinenbau GmbH Breidenbach | Work station with lifting mechanism for a packaging machine |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102010019576B4 (en) | 2010-05-05 | 2023-01-26 | Gea Food Solutions Germany Gmbh | Packaging machine with an exchangeable drive for the lifting device |
ES2597703T3 (en) | 2012-05-24 | 2017-01-20 | Multivac Sepp Haggenmüller Gmbh & Co Kg | Lifting equipment for a packaging machine |
EP2896573B1 (en) * | 2014-01-21 | 2018-03-14 | MULTIVAC Sepp Haggenmüller SE & Co. KG | Deep draw packaging machine with upper film moulding station and corresponding method |
DE102014210963A1 (en) * | 2014-06-06 | 2015-12-17 | Optima consumer GmbH | Drive device and station of a packaging machine |
DE102014116462A1 (en) * | 2014-11-11 | 2016-05-12 | Krones Ag | Device for filling a container with a filling product |
CN106734500A (en) * | 2016-12-27 | 2017-05-31 | 武汉理工大学 | A kind of servomotor drives the mechanical high speed fine punching machine host of main motion |
US10961093B2 (en) * | 2017-08-14 | 2021-03-30 | Cp Packaging, Inc. | Simplified lift mechanism for a packaging machine |
DE102019219833A1 (en) * | 2019-12-17 | 2021-06-17 | Multivac Sepp Haggenmüller Se & Co. Kg | Work station for a packaging machine with a lifting mechanism with a toggle mechanism |
CN112407446A (en) * | 2020-10-30 | 2021-02-26 | 上海爵诺科技有限公司 | High-speed cantilever type die opening and closing transmission mechanism |
DE102022107346A1 (en) | 2022-03-29 | 2023-10-05 | Multivac Sepp Haggenmüller Se & Co. Kg | Hoist mechanism with lock and procedure |
AT525795B1 (en) * | 2022-05-12 | 2023-08-15 | S A M Innovations Gmbh & Co Kg | Device for producing two-layer or multi-layer vacuum-packed and/or inert gas film packaging for foodstuffs |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4216210A1 (en) * | 1992-05-15 | 1993-11-18 | Multivac Haggenmueller Kg | Workstation with an upper part and a lower part movable relative to it |
DE59709858D1 (en) * | 1997-08-08 | 2003-05-22 | Multivac Haggenmueller Kg | Lifting device for a work station of a packaging machine |
DE10218633B3 (en) | 2002-04-25 | 2004-08-19 | Tmd Friction Europe Gmbh | Press |
DE10309030B3 (en) | 2003-03-01 | 2004-09-16 | Niemann, Wolfgang, Dipl.-Ing. | Toggle Press |
DE10347775B4 (en) | 2003-10-15 | 2006-07-13 | Uhlmann Pac-Systeme Gmbh & Co. Kg. | workstation |
DE10351567B4 (en) * | 2003-11-03 | 2017-06-22 | Gea Food Solutions Germany Gmbh | Thermoformer with an electrolinear cylinder |
DE102004006118A1 (en) * | 2004-02-06 | 2005-08-25 | Cfs Germany Gmbh | Packaging machine with several lifting devices per work station |
DE102006040807A1 (en) | 2006-08-31 | 2008-03-20 | Emil Pester Gmbh | Sealing station, for sealing cover sheet to support sheet in thermoforming machines, has at least one, preferably four, force sensors mounted in line of force between sealing tools |
-
2009
- 2009-02-11 DE DE200910008452 patent/DE102009008452B3/en not_active Expired - Fee Related
-
2010
- 2010-02-01 EP EP20100000988 patent/EP2218575B1/en active Active
- 2010-02-01 ES ES10000988T patent/ES2400613T3/en active Active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3998218A1 (en) * | 2017-10-12 | 2022-05-18 | Weber Maschinenbau GmbH Breidenbach | Work station with lifting mechanism for a packaging machine |
US11524809B2 (en) | 2017-10-12 | 2022-12-13 | Weber Maschinenbau Gmbh Breidenbach | Working station with a lifting mechanism for a packaging machine |
EP4276026A3 (en) * | 2017-10-12 | 2024-04-03 | Weber Food Technology GmbH | Working station with a lifting mechanism for a packaging machine |
Also Published As
Publication number | Publication date |
---|---|
DE102009008452B3 (en) | 2010-10-07 |
EP2218575A1 (en) | 2010-08-18 |
ES2400613T3 (en) | 2013-04-11 |
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