EP1713690A2 - Packaging machine comprising several lifting devices per working station - Google Patents
Packaging machine comprising several lifting devices per working stationInfo
- Publication number
- EP1713690A2 EP1713690A2 EP05707193A EP05707193A EP1713690A2 EP 1713690 A2 EP1713690 A2 EP 1713690A2 EP 05707193 A EP05707193 A EP 05707193A EP 05707193 A EP05707193 A EP 05707193A EP 1713690 A2 EP1713690 A2 EP 1713690A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lifting
- packaging machine
- lifting devices
- packaging
- shafts
- 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.)
- Withdrawn
Links
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
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
- B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
-
- 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
- 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
Definitions
- the present invention relates to a packaging machine with at least one work station, which has an upper tool and a vertically displaceable lower tool, the lower tool having a plurality of lifting devices arranged parallel to one another.
- the packaging is usually manufactured and filled in a semi-continuous, intermittent packaging machine, in which the packaging troughs are first deep-drawn from a film, then filled with the goods to be packaged and then sealed with a cover film.
- the packaging produced in this way is cut apart in the last step.
- the film is transported a certain length per cycle.
- several packaging trays are shaped, filled, sealed and cut at the same time.
- tools such as the deep-drawing mold, the sealing or the cutting tool have to be moved vertically.
- the packaging machines according to the prior art currently have the disadvantage that not enough packaging can be produced per unit of time.
- the object of the present invention is therefore to provide a packaging machine which overcomes the disadvantages of the prior art.
- a packaging machine with a work station which has an upper tool and a vertically displaceable lower tool, the lower tool having a plurality of lifting devices preferably arranged parallel to one another and / or a lifting device having at least three lifting shafts.
- the packaging machine according to the invention allows a film feed of any length per cycle and thus the simultaneous production of a large number of filled packages.
- the packaging machine according to the invention is simple and inexpensive to manufacture and operate.
- the lower tool has a plurality of lifting devices arranged parallel to one another, so that the lower tool can be moved up and down by a plurality of lifting devices.
- a lifting device in the sine of the invention has at least one drive, for example a motor and / or a cylinder.
- the drive is preferably connected to a means, a transmission, which converts a rotary and / or a linear movement into an up and down movement and / or supports the respective movement.
- a means is, for example, a toggle lever, a cam, a cam and / or a nut / spindle combination.
- These lifting devices can be arranged next to one another as well as one behind the other in relation to the running direction of the film web, an arrangement in series with respect to the film movement being preferred.
- the lifting devices are preferably of identical design.
- the lifting devices are also preferably operable independently of one another.
- This embodiment of the present invention has the advantage that the user does not have to operate all the devices at the same time, so that he can choose the number of lifting devices used depending on the length of the film feed.
- the lower tool of the respective work station is designed in several parts in accordance with the number of lifting devices. In this case, part of the lower tool is then assigned to a lifting device. In the event that not all lifting devices are used, one or more of the lifting devices can serve as redundancy.
- the lifting devices are controlled by a central control unit.
- This Embodiment of the present invention is particularly advantageous when the lifting devices have to be operated synchronously.
- a lifting device preferably has two drive means.
- each drive means preferably interacts with at least two lifting shafts.
- the drive means very particularly preferably work in opposite directions.
- Figure 1 shows the basic structure of a thermoforming packaging machine.
- Figure 2 shows a perspective view of a toggle lever system in the raised position.
- Figure 3 shows a toggle lever system with 3 lifting shafts.
- Figure 4 shows two lifting stations arranged in series for a work station.
- FIG. 1 shows the packaging machine according to the invention in a schematic representation.
- a film 1 is rolled from a roll in cycles and first passes through a deep-drawing station 2, which consists of an upper tool 3 and a lower tool 4.
- the lower tool 4 is mounted on a plate 5 which, as indicated by the arrow, can be raised and lowered.
- the deep-drawing station 2 In the deep-drawing station 2, however, at least one, but usually several, packaging troughs 6 are formed into the film 1.
- the number and the arrangement of the packaging troughs, which are produced simultaneously in one cycle, are transported in cycles, filled with a product to be packed, and in the following sealing station 10, the packaging troughs are sealed with a cover film.
- the length of the feed per cycle depends on the number of packaging troughs that are manufactured at the same time. Currently bar lengths Aimed for> 1200 mm.
- the sealing station 10 also consists of an upper tool 12 and a lower tool 11, wherein the lower tool 11 can also be
- the packaging is cut apart in the cutting station 7, which likewise consists of an upper tool 8 and a lower tool 9, the lower tool 9 also being able to be raised and lowered at the cutting station.
- the deep-drawing station 2, the sealing station 10 and the cutting station 7 are also referred to below as work stations 2, 10, 7.
- the work stations each have tools which - previously also referred to as upper tools 3, 8, 12 - are stationary or can be raised and are referred to below as stationary parts 3, 8, 12.
- the workstations 2, 10, 7 can in particular be fastened to one or more essentially horizontal rails (not referred to below as assembly rails 15), not shown, by means of so-called suspension points which are attached to the workstations 2, 10, 7.
- the work stations can in particular be provided on the rails so as to be horizontally displaceable.
- the work stations each have tools which - previously also referred to as lower tools 4, 9, 11 - can be raised or lowered and which are referred to below as lifting parts 4, 9, 11.
- the lifting parts 4, 9, 11 are arranged at a work station below the stationary parts 3, 8, 12. It is also appropriate, but not necessary according to the invention, that the stationary parts 3, 8, 12 are arranged at a work station above the lifting parts 4, 9, 11. According to the invention, the lifting parts are raised or lowered compared to the stationary parts by means of at least two means 50.
- the means 50 are also referred to below as a lifting table.
- At least one, but preferably all, work stations have at least two lifting tables, which are preferably arranged one behind the other in relation to the running direction of the film.
- the lower tools can be designed in several parts, in which case the number of parts corresponds to the number of lifting devices.
- An exemplary lifting table is shown in Figure 2.
- the lifting table 50 has a plate 5 on which the lifting parts 4, 9, 11 can be mounted.
- the plate 5 is provided with two guide bushes 61 which receive guide rods 51.
- Further support rods 52 carry a fastening device 53 for the stationary part 3, 8, 12, which is not shown in FIG. 2.
- the lifting table 50 is provided in accordance with the invention in particular in such a way that it can be attached by means of several suspension points 54, for example four suspension points 54, in the horizontally extending one in FIG 2 mounting rail 15, not shown, can be inserted horizontally.
- the fastening device 53 and thus the stationary part 3, 8, 12 can, in a preferred embodiment of the lifting table 50, be provided so as to be vertically displaceable relative to the suspension points 54.
- Such a vertical displacement or movement of the stationary part 3, 8, 12 is provided, for example, by means of a stroke actuator 55, which is provided in particular as an electric motor, for example by means of a spindle drive, or the like.
- the support rods 52 can also - in addition to their function as support rods 52 - perform a function as guide rods for the plate 5 or the lifting part 4, 9, 11.
- the plate 5 On its lower side, the plate 5 has bearings 62, in which upper ends 63a of rods 63 are pivoted about axes.
- the rods 63 are rotatably connected at their lower end 63b via a boom 64 to a first lifting shaft 65a or to a second lifting shaft 65b, the lifting shaft itself being rotatably supported in yokes 66.
- the yokes 66 are firmly connected to the support rods 52.
- the yokes 66 can also be axially displaceable and supported on a spring element in order to compensate for film thickness fluctuations and to avoid that the packaging machine is damaged when the outward stroke is too great.
- the spring force in this embodiment is somewhat greater than the desired seal or cutting force.
- the arms 64 and the rods 63 form toggle lever systems which convert a rotary movement of the lifting shafts 65a, 65b into a translatory or linear movement of the plate 5 and thus of the lifting parts 4, 9, 11 relative to the stationary part not shown in FIGS. 2 to 4.
- the first toggle lever system is attached to the first lifting shaft 65a and the second toggle lever system is attached to the second lifting shaft 65b.
- the first toggle lever system may include a plurality of toggle levers provided on the first lift shaft 65a.
- the second toggle lever system can comprise a plurality of toggle levers that are provided on the second lifting shaft 65b.
- two toggle levers are provided on each of the two lifting shafts 65a, 65b.
- the first and second lifting shafts 65a, 65b are moved by means of an electric cylinder 68 (Parker Hannifin GmbH Germany) which has a first point of application and a second point of application.
- a first lever 67a is provided on the first lifting shaft 65a and a second lever 67b on the second lifting shaft 65b.
- the first point of application is provided at the end of the first lever 67a facing away from the first lifting shaft 65a and the second point of application is provided at the end of the second lever 67b facing away from the second lifting shaft 65b.
- the lifting part 4, 9, 11 and the plate 5 are in their / their highest position because the arms 64 and the supports 63 are each arranged essentially linearly one behind the other.
- the electric cylinder 68 is completely retracted in the exemplary embodiment shown, ie the points of attack are at the smallest distance.
- the plate 5 and thus the lifting part 4, 9, 11 are lowered if the extension of the electric cylinder 68 causes the lifting shafts 65a, 65b to rotate and the knee lever systems to buckle.
- This movement is indicated in FIG. 2 by means of the arrows 69.
- this movement is carried out uniformly for both lifting shafts 67a, 67b or for both toggle lever systems, so that there is no tilting of the plate 5.
- compensating means are provided on the lifting device 50 according to the invention.
- a first possibility of such compensating means is to provide the guide bushes 61. The longer the guide bushes 61 are provided, the better the guidance of the lifting part 4, 9, 11 in the guide rods 51 and thus its protection against tilting.
- compensating means Another possibility of such compensating means is to ensure a synchronized and opposite movement of the lifting shafts 65a, 65b by, for example, a link chain, a toothed belt, a gearwheel arrangement, a traction means - in particular a wire wound several times on the lifting shafts 65a, 65b - or a A combination of such synchronization means is provided between the lifting shafts 65a, 65b.
- Compensating means that synchronize directly at the lifting shafts - ie with the same Effective boom lengths on both toggle lever systems, in particular a uniform and opposing movement of the lifting shafts 65a, 65b by means of gears, chains or the like, are also referred to below as direct compensating means.
- a wire (not shown) is connected in a crossed manner to the lifting shafts 65a, 65b, in particular wound up by means of one or more revolutions, in such a way that the wire turns in the opposite direction, ie with a different direction of rotation made, rotary movement of the lifting shafts 65a, 65b unwound from one lifting shaft above and at the same time wound onto the other lifting shaft below or vice versa.
- This ensures that the force of the electric cylinder 68 is transmitted directly and evenly to both toggle lever systems. For example, larger frictional resistances of one system are compensated for by the compensating means.
- Compensating means that indirectly cause a synchronized movement of the lifting shafts such as, for example, extended guide bushes 61, are also referred to below as indirect compensating means.
- direct and indirect compensating means are used both cumulatively and alternatively. It is important to ensure that the compensating means have as little slip as possible. This can be accomplished, for example, by providing spring means integrated in the compensating means.
- the wire 71 is provided with a tensioning means or a spring means 70, for example a spiral spring that can be expanded linearly along its axis, the wire 71 being provided in a crossed manner between the lifting shafts 65a, 65b and the spring means 70 tensioning the wire 71.
- the spring means 70 is provided, for example, in such a way that any slippage of the compensating means provided as wire 71 is prevented.
- FIG. 4 In an alternative embodiment, not shown in FIG.
- the wire 71 is provided with a tensioning means or a spring means 70, which is provided on the wire 71 or on the lifting shafts 65a, 65b in such a way that when the plate 5 is raised, it becomes a Deflection of the spring means 70 comes.
- a tensioning means or a spring means 70 which is provided on the wire 71 or on the lifting shafts 65a, 65b in such a way that when the plate 5 is raised, it becomes a Deflection of the spring means 70 comes.
- a tensioning means or a spring means 70 which is provided on the wire 71 or on the lifting shafts 65a, 65b in such a way that when the plate 5 is raised, it becomes a Deflection of the spring means 70 comes.
- a chain or a toothed belt to be crossed between the lifting shafts 65a, 65b. In this case, a counter-rotating movement of the lifting shafts 65a, 65b can be effected with particularly simple means.
- the lifting table can also be operated with a pneumatic or hydraulic cylinder.
- FIG. 3 shows a lifting device with three lifting shafts 65 a - c and two linear cylinders 68, one linear cylinder driving the lifting shafts 65 b and c and the other cylinder driving the lifting shafts 65 a and b.
- the person skilled in the art recognizes that a cylinder 68 may also be sufficient for driving.
- the linear cylinders are connected on the one hand to the yoke 66 and on the other hand to the levers 67 a and b or 67 b and c.
- the levers 67 a - c are in turn non-rotatably connected to the lifting shafts 65 a - c.
- the person skilled in the art recognizes that the electric linear cylinders work in opposite directions.
- the lifting rod In the illustrated upper position of the plate 5, the lifting rod is fully retracted in the rear electric cylinder, while it is fully extended in the front electric cylinder. In the lowered position of the plate 5, the situation is exactly the opposite.
- the cylinders 68 can in each case also be mounted on the shafts 65a or 65c.
- FIG. 4 shows two lifting stations 50 arranged in a row, ie one behind the other in the running direction of the film.
- the width of the two lifting stations 50 in the running direction essentially corresponds to the feed length of the film in one cycle.
- the person skilled in the art recognizes that the bars 90 on which the respective lower tool (not shown) lies are arranged transversely to the running direction, contrary to the prior art are what simplifies the modular arrangement.
- the two lifting stations each have a drive, but are operated completely synchronously.
- the lifting device can also be designed as in EP 0 569937, which is designed in DE 103 51 567.4.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Basic Packing Technique (AREA)
- Packaging Of Machine Parts And Wound Products (AREA)
Abstract
The invention relates to a packaging machine comprising at least one working station (2,7,10) which is provided with an upper tool (3, 8, 12) and a vertically displaceable lower tool (4, 3, 11). The lower tool comprises several lifting devices (50) which are parallel in relation to each other.
Description
Verpackungsmaschine mit mehreren Hubvorrichtungen pro ArbeitsstationPackaging machine with several lifting devices per work station
Die vorliegende Erfindung betrifft eine Verpackungsmaschine mit mindestens einer Arbeitsstation, die ein Oberwerkzeug und ein vertikal verschiebbares Unterwerkzeug aufweist, wobei das Unterwerkzeug mehrere parallel zueinander geordnete Hubvorrichtungen aufweist.The present invention relates to a packaging machine with at least one work station, which has an upper tool and a vertically displaceable lower tool, the lower tool having a plurality of lifting devices arranged parallel to one another.
Heutzutage werden Lebensmittel oftmals in Kunststoffverpackungen verpackt, um diese haltbar zu machen. Das Herstellen und Befüllen der Verpackungen geschieht in der Regel in einer semikontinuierlich, taktweise arbeitenden Verpackungsmaschine, bei der die Verpackungsmulden zunächst aus einer Folie tiefgezogen, sodann mit dem zu verpackenden Gut befüllt und anschließend mit einer Deckelfolie versiegelt wird. Die so hergestellten Verpackungen werden im letzten Schritt auseinander geschnitten. Pro Takt wird die Folie um eine gewisse Länge weitertransportiert. In der Regel werden mehrere Verpackungsmulden gleichzeitig geformt, befüllt, versieget und geschnitten. Bei der Herstellung der Verpackungen müssen Werkzeuge, beispielsweise die Tiefziehform, das Siegel- oder das Schneidwerkzeug vertikal bewegt werden. Die Verpackungsmaschinen gemäß dem Stand der Technik haben derzeit den Nachteil, dass nicht genug Verpackungen pro Zeiteinheit hergestellt werden können.Nowadays, food is often packed in plastic packaging to make it durable. The packaging is usually manufactured and filled in a semi-continuous, intermittent packaging machine, in which the packaging troughs are first deep-drawn from a film, then filled with the goods to be packaged and then sealed with a cover film. The packaging produced in this way is cut apart in the last step. The film is transported a certain length per cycle. As a rule, several packaging trays are shaped, filled, sealed and cut at the same time. When manufacturing the packaging, tools such as the deep-drawing mold, the sealing or the cutting tool have to be moved vertically. The packaging machines according to the prior art currently have the disadvantage that not enough packaging can be produced per unit of time.
Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, eine Verpackungsmaschine zur Verfügung zu stellen, mit der die Nachteile des Standes der Technik überwunden werden.The object of the present invention is therefore to provide a packaging machine which overcomes the disadvantages of the prior art.
Gelöst wird die Aufgabe erfindungsgemäß durch eine Verpackungsmaschine mit einer Arbeitsstation, die ein Oberwerkzeug und ein vertikal verschiebbares Unterwerkzeug aufweist, wobei das Unterwerkzeug mehrere vorzugsweise parallel zueinander angeordnete Hubvorrichtungen und/oder eine Hubvorrichtung mindestens drei Hubwellen aufweist, aufweist.The object is achieved according to the invention by a packaging machine with a work station which has an upper tool and a vertically displaceable lower tool, the lower tool having a plurality of lifting devices preferably arranged parallel to one another and / or a lifting device having at least three lifting shafts.
Es war für den Fachmann überaus erstaunlich und nicht zu erwarten, dass mit der erfindungsgemäßen Verpackungsmaschine wesentlich mehr Verpackungen pro
Zeiteinheit hergestellt werden können. Die erfindungsgemäße Verpackungsmaschine erlaubt einen beliebig langen Folienvorschub pro Takt und damit die gleichzeitige Herstellung einer Vielzahl von befüllten Verpackungen. Die erfindungsgemäße Verpackungsmaschine ist einfach und kostengünstig herzustellen und zu betreiben.It was extremely surprising for the person skilled in the art and it was not to be expected that the packaging machine according to the invention would produce significantly more packaging per Unit of time can be produced. The packaging machine according to the invention allows a film feed of any length per cycle and thus the simultaneous production of a large number of filled packages. The packaging machine according to the invention is simple and inexpensive to manufacture and operate.
Erfindungsgemäß weist das Unterwerkzeug mehrere parallel zueinander angeordnete Hubvorrichtungen auf, so dass das Unterwerkzeug durch mehrere Hubvorrichtungen auf und ab bewegt werden kann. Eine Hubvorrichtung im Sine der Erfindung weist zumindest einen Antrieb, beispielsweise einen Motor und/oder einen Zylinder, auf. Vorzugsweise ist der Antrieb mit einem Mittel, einem Getriebe, verbunden, dass eine rotative- und/oder eine lineare Bewegung in eine Auf- und Abbewegung umwandelt und/oder die jeweilige Bewegung unterstützt. Ein derartige Mittel ist beispielsweise ein Kniehebel, eine Kurvenscheibe, eine Nocke und/oder eine Mutter/Spindel-Kombination. Diese Hubvorrichtungen können bezogen auf die Laufrichtung der Folienbahn sowohl nebeneinander als auch hintereinander angeordnet sein, wobei eine Anordnung hintereinander bezogen auf die Folienbewegung bevorzugt ist.According to the invention, the lower tool has a plurality of lifting devices arranged parallel to one another, so that the lower tool can be moved up and down by a plurality of lifting devices. A lifting device in the sine of the invention has at least one drive, for example a motor and / or a cylinder. The drive is preferably connected to a means, a transmission, which converts a rotary and / or a linear movement into an up and down movement and / or supports the respective movement. Such a means is, for example, a toggle lever, a cam, a cam and / or a nut / spindle combination. These lifting devices can be arranged next to one another as well as one behind the other in relation to the running direction of the film web, an arrangement in series with respect to the film movement being preferred.
Vorzugsweise sind die Hubvorrichtungen identisch ausgebildet.The lifting devices are preferably of identical design.
Weiterhin bevorzugt sind die Hubvorrichtungen unabhängig voneinander betreibbar. Diese Ausführungsform der vorliegenden Erfindung hat den Vorteil, dass der Benutzer nicht alle Vorrichtungen gleichzeitig betreiben muss, so dass er in Abhängigkeit der Länge des Folienvorschubs die Anzahl der eingesetzten Hubvorrichtungen wählen kann. In diesem Fall ist es vorteilhaft, wenn das Unterwerkzeug der jeweiligen Arbeitsstation entsprechend der Anzahl der Hubvorrichtungen mehrteilig ausgeführt ist. In diesem Fall ist dann jeweils ein Teil des Unterwerkzeugs einer Hubvorrichtung zugeordnet. Für den Fall, dass nicht alle Hubvorrichtungen zum Einsatz kommen, können eine oder mehrere der Hubvorrichtungen als Redundanz dienen.The lifting devices are also preferably operable independently of one another. This embodiment of the present invention has the advantage that the user does not have to operate all the devices at the same time, so that he can choose the number of lifting devices used depending on the length of the film feed. In this case, it is advantageous if the lower tool of the respective work station is designed in several parts in accordance with the number of lifting devices. In this case, part of the lower tool is then assigned to a lifting device. In the event that not all lifting devices are used, one or more of the lifting devices can serve as redundancy.
In einer weiteren bevorzugten Ausführungsform der vorliegenden Erfindung werden die Hubvorrichtungen von einer zentralen Steuereinheit gesteuert. Diese
Ausführungsform der vorliegenden Erfindung ist insbesondere dann vorteilhaft, wenn die Hubvorrichtungen synchron betrieben werden müssen.In a further preferred embodiment of the present invention, the lifting devices are controlled by a central control unit. This Embodiment of the present invention is particularly advantageous when the lifting devices have to be operated synchronously.
Vorzugsweise weist eine Hubvorrichtung zwei Antriebsmittel auf.A lifting device preferably has two drive means.
Weiterhin bevorzugt wirkt jedes Antriebsmittel jeweils mit mindestens zwei Hubwellen zusammen.Furthermore, each drive means preferably interacts with at least two lifting shafts.
Ganz besonders bevorzugt arbeiten die Antriebsmittel gegensinnig.The drive means very particularly preferably work in opposite directions.
Im Folgenden wird die Erfindung anhand der Figuren 1 - 4 erläutert.The invention is explained below with reference to FIGS. 1-4.
Figur 1 zeigt den prinzipiellen Aufbau einer Tiefziehverpackungsmaschine.Figure 1 shows the basic structure of a thermoforming packaging machine.
Figur 2 zeigt eine perspektivische Darstellung eines Kniehebelsystems in angehobener Position.Figure 2 shows a perspective view of a toggle lever system in the raised position.
Figur 3 zeigt ein Kniehebelsystem mit 3 Hubwellen.Figure 3 shows a toggle lever system with 3 lifting shafts.
Figur 4 zeigt zwei in Reihe angeordnete Hubstationen für eine Arbeitsstation.Figure 4 shows two lifting stations arranged in series for a work station.
Figur 1 zeigt die erfindungsgemäße Verpackungsmaschine in schematischer Darstellung. Eine Folie 1 wird von einer Rolle taktweise abgerollt und durchläuft zunächst eine Tiefziehstation 2, die aus einem Oberwerkzeug 3 und einem Unterwerkzeug 4 besteht. Das Unterwerkzeug 4 ist auf einer Platte 5 montiert, die, wie durch den Pfeil angedeutet, angehoben und abgesenkt werden kann. In der Tiefziehstation 2 werde mindestens eine meistens jedoch mehrere Verpackungsmulden 6 in die Folie 1 geformt. Die Anzahl und die Anordnung der Verpackungsmulden, die gleichzeitig bei einem Takt hergestellt werden, werden taktweise weitertransportiert, mit einem Verpackungsgut befüllt und in der folgenden Siegelstation 10 werden die Verpackungsmulden mit einer Deckelfolie versiegelt. Die Länge des Vorschubes pro Takt richtet sich nach der Anzahl der Verpackungsmulden, die gleichzeitig hergestellt werden. Derzeit werden Taktlängen
> 1200 mm angestrebt. Auch die Siegelstation 10 besteht aus einem Oberwerkzeug 12 und einem Unterwerkzeug 11 , wobei auch bei der Siegelstation das Unterwerkzeug 11 angehoben und abgesenkt werden kann.Figure 1 shows the packaging machine according to the invention in a schematic representation. A film 1 is rolled from a roll in cycles and first passes through a deep-drawing station 2, which consists of an upper tool 3 and a lower tool 4. The lower tool 4 is mounted on a plate 5 which, as indicated by the arrow, can be raised and lowered. In the deep-drawing station 2, however, at least one, but usually several, packaging troughs 6 are formed into the film 1. The number and the arrangement of the packaging troughs, which are produced simultaneously in one cycle, are transported in cycles, filled with a product to be packed, and in the following sealing station 10, the packaging troughs are sealed with a cover film. The length of the feed per cycle depends on the number of packaging troughs that are manufactured at the same time. Currently bar lengths Aimed for> 1200 mm. The sealing station 10 also consists of an upper tool 12 and a lower tool 11, wherein the lower tool 11 can also be raised and lowered in the sealing station.
Abschließend werden die Verpackungen in der Schneidstation 7 auseinandergeschnitten, die ebenfalls aus einem Oberwerkzeug 8 und einem Unterwerkzeug 9 besteht, wobei auch bei der Schneidstation das Unterwerkzeug 9 angehoben und abgesenkt werden kann.Finally, the packaging is cut apart in the cutting station 7, which likewise consists of an upper tool 8 and a lower tool 9, the lower tool 9 also being able to be raised and lowered at the cutting station.
Die Tiefziehstation 2, die Siegelstation 10 und die Schneidstation 7 werden im Folgenden auch als Arbeitsstationen 2, 10, 7 bezeichnet. Die Arbeitsstationen weisen jeweils Werkzeuge auf, die - bisher auch als Oberwerkzeuge 3, 8, 12 bezeichnet -stationär oder anhebbar vorgesehen sind und die im Folgenden als Stationärteile 3, 8, 12 bezeichnet werden. Die Arbeitsstationen 2, 10, 7 können insbesondere an einer oder mehreren nicht dargestellten, im wesentlichen horizontal verlaufenden Schienen (im Folgenden auch als Montageschienen 15 bezeichnet) mittels sogenannter Aufhängepunkte befestigt sein, die an den Arbeitsstationen 2, 10, 7 angebracht sind. An den Schienen können die Arbeitsstationen insbesondere horizontal verschiebbar vorgesehen sein. Die Arbeitsstationen weisen jeweils Werkzeuge auf, die - bisher auch als Unterwerkzeuge 4, 9, 11 bezeichnet - heb- bzw. senkbar sind und die im Folgenden als Hubteile 4, 9, 11 bezeichnet werden. Es ist zwar zweckmäßig, jedoch erfindungsgemäß nicht zwingend notwendig, dass die Hubteile 4, 9, 11 an einer Arbeitsstation unterhalb der Stationärteile 3, 8, 12 angeordnet sind. Ebenso ist es zweckmäßig, jedoch erfindungsgemäß nicht notwendig, dass die Stationärteile 3, 8, 12 an einer Arbeitsstation oberhalb der Hubteile 4, 9, 11 angeordnet sind. Die Hubteile werden gegenüber den Stationärteilen erfindungsgemäß mittels mindestens 2 Mitteln 50 gehoben bzw. gesenkt. Die Mittel 50 werden im Folgenden auch als Hubtisch bezeichnet.The deep-drawing station 2, the sealing station 10 and the cutting station 7 are also referred to below as work stations 2, 10, 7. The work stations each have tools which - previously also referred to as upper tools 3, 8, 12 - are stationary or can be raised and are referred to below as stationary parts 3, 8, 12. The workstations 2, 10, 7 can in particular be fastened to one or more essentially horizontal rails (not referred to below as assembly rails 15), not shown, by means of so-called suspension points which are attached to the workstations 2, 10, 7. The work stations can in particular be provided on the rails so as to be horizontally displaceable. The work stations each have tools which - previously also referred to as lower tools 4, 9, 11 - can be raised or lowered and which are referred to below as lifting parts 4, 9, 11. It is expedient, but not absolutely necessary according to the invention, that the lifting parts 4, 9, 11 are arranged at a work station below the stationary parts 3, 8, 12. It is also appropriate, but not necessary according to the invention, that the stationary parts 3, 8, 12 are arranged at a work station above the lifting parts 4, 9, 11. According to the invention, the lifting parts are raised or lowered compared to the stationary parts by means of at least two means 50. The means 50 are also referred to below as a lifting table.
Erfindungsgemäß weist mindestens eine vorzugsweise jedoch alle Arbeitsstationen mindestens zwei Hubtische auf, die vorzugsweise bezogen auf die Laufrichtung der Folie hintereinander angeordnet sind. Die Unterwerkzeuge können mehrteilig ausgebildet sein, wobei in diesem Fall die Anzahl der Teile der Anzahl der Hubvorrichtungen entspricht.
Ein beispielhafte Hubtisch ist in Figur 2 dargestellt. Der Hubtisch 50 weist eine Platte 5 auf, auf der die Hubteile 4, 9, 11 montierbar sind. Die Platte 5 ist mit zwei Führungsbuchsen 61 versehen, die Führungsstangen 51 aufnehmen. Weitere Trägerstangen 52 tragen eine Befestigungsvorrichtung 53 für das in den Figuren 2 nicht dargestellte Stationärteil 3, 8, 12. Der Hubtisch 50 ist erfindungsgemäß insbesondere derart vorgesehen, dass er mittels mehrerer Aufhängepunkte 54, beispielsweise vier Aufhängepunkte 54, in der horizontal verlaufenden, in Figur 2 nicht dargestellten Montageschiene 15 horizontal verschieblich eingesetzt werden kann. Die Befestigungsvorrichtung 53 und damit das Stationärteil 3, 8, 12 kann in einer bevorzugten Ausführungsform des Hubtisches 50 gegenüber den Aufhängepunkten 54 vertikal verschiebbar vorgesehen sein. Eine solche vertikale Verschiebung bzw. Bewegung des Stationärteils 3, 8, 12 ist beispielsweise mittels eines Hubaktuators 55 vorgesehen, der insbesondere als Elektromotor, beispielsweise mittels Spindeltrieb, oder dergleichen vorgesehen ist. Die Trägerstangen 52 können erfindungsgemäß ebenfalls - zusätzlich zu ihrer Funktion als Trägerstangen 52 - eine Funktion als Führungsstangen für die Platte 5 bzw. das Hubteil 4, 9, 11 ausüben. In diesem Fall kann es vorgesehen sein, auf zusätzliche Führungsstangen 51 zu verzichten und die Trägerstangen 52 als Führungsstangen 51 zu verwenden. Auf ihrer unteren Seite weist die Platte 5 Lager 62 auf, in denen obere Enden 63a von Stangen 63 um Achsen schwenkbar gelagert sind. Die Stangen 63 sind an ihrem unteren Ende 63b drehbar über Ausleger 64 mit einer ersten Hubwelle 65a bzw. mit einer zweiten Hubwelle 65b verbunden, wobei die Hubwelle ihrerseits in Jochs 66 drehbar gelagert ist. Die Jochs 66 sind fest mit den Trägerstangen 52 verbunden. Die Jochs 66 können jedoch auch axial verschieblich und auf einem Federelement gelagert sein, um Foliendickenschwankungen auszugleichen und um zu vermeiden, dass die Verpackungsmaschine bei einem zu großen Ausfwärtshub beschädigt wird. Die Federkraft ist bei dieser Ausführungsform etwas größer als die gewünschte Siegel oder Schneidkraft. Die Ausleger 64 und die Stangen 63 bilden Kniehebelsysteme, die eine rotative Bewegung der Hubwellen 65a, 65b in eine translatorische bzw. lineare Bewegung der Platte 5 und damit der Hubteile 4, 9, 11 relativ zum in Figur 2 bis 4 nicht dargestellten Stationärteil umwandeln. Hierbei ist das erste Kniehebelsystem an der ersten Hubwelle 65a und das zweite Kniehebelsystem an der zweiten Hubwelle 65b angebracht. Hierbei kann
das erste Kniehebelsystem durchaus eine Mehrzahl von Kniehebeln, die an der ersten Hubwelle 65a vorgesehen sind, umfassen. Ebenso kann das zweite Kniehebelsystem durch aus eine Mehrzahl von Kniehebeln, die an der zweiten Hubwellen 65b vorgesehen sind, umfassen. Im Beispiel der Figuren 2 bis 4 sind an beiden Hubwellen 65a, 65b jeweils zwei Kniehebel vorgesehen. Die erste und zweite Hubwelle 65a, 65b wird mittels eines einen ersten Angriffspunkt und einen zweiten Angriffspunkt aufweisenden Elektrozylinders 68 (Firma Parker Hannifin GmbH Deutschland), bewegt. Hierzu ist ein erster Hebel 67a an der ersten Hubwelle 65a und zweiter Hebel 67b an der zweiten Hubwelle 65b vorgesehen. Der erste Angriffspunkt ist an dem der ersten Hubwelle 65a abgewandten Ende des ersten Hebels 67a vorgesehen und der zweite Angriffspunkt ist an dem der zweiten Hubwelle 65b abgewandten Ende des zweiten Hebels 67b vorgesehen. Im in der Figur 2 dargestellten ausgefahrenen Zustand der Hubeinrichtung 50 ist das Hubteil 4, 9, 11 und die Platte 5 auf seiner/ihrer höchsten Position, weil die Ausleger 64 und die Träger 63 jeweils im wesentlichen linear hintereinander angeordnet sind. In dieser Situation ist im dargestellten Ausführungsbeispiel der Elektrozylinder 68 vollständig eingezogen, d.h. die Angriffspunkte weisen den kleinsten Abstand auf. Zu einer Absenkung der Platte 5 und damit des Hubteils 4, 9, 11 kommt es, wenn durch ein Ausfahren des Elektrozylinders 68 eine Drehung der Hubwellen 65a, 65b mit einhergehendem Einknicken der Kniehebelsysteme bewirkt wird. Diese Bewegung ist in Figur 2 mittels der Pfeile 69 angedeutet. Erfindungsgemäß wird diese Bewegung gleichmäßig für beide Hubwellen 67a, 67b bzw. für beide Kniehebelsysteme durchgeführt, so dass es zu keinem Verkanten der Platte 5 kommt. Hierzu sind erfindungsgemäß Ausgleichsmittel an der Hubeinrichtung 50 vorgesehen. Eine erste Möglichkeit solcher Ausgleichsmittel besteht darin, die Führungsbuchsen 61 vorzusehen. Je länger die Führungsbuchsen 61 vorgesehen sind, desto besser ist die Führung des Hubteils 4, 9, 11 in den Führungsstangen 51 und damit dessen Absicherung gegen Verkanten. Eine weitere Möglichkeit solcher Ausgleichmittel besteht darin, eine synchronisierte und gegenläufige Bewegung der Hubwellen 65a, 65b dadurch zu gewährleisten, dass beispielsweise eine Gliederkette, ein Zahnriemen, eine Zahnradanordnung, ein Zugmittel - insbesondere ein auf den Hubwellen 65a, 65b mehrfach aufgewickelter Draht - oder eine Kombination solcher Synchronisationsmittel zwischen den Hubwellen 65a, 65b vorgesehen ist. Ausgleichsmittel, die direkt an den Hubwellen eine synchronisierte - d.h. bei gleichen
wirksamen Auslegerlängen an beiden Kniehebelsystemen insbesondere eine gleichmäßige und gegenläufige - Bewegung der Hubwellen 65a, 65b mittels Zahnräder, Ketten oder dergleichen bewirken, werden im folgenden auch als direkte Ausgleichsmittel bezeichnet. Im Bereich des Jochs 66 zwischen den Hubwellen 65a, 65b ist ein Draht (nicht dargestellt) derart gekreuzt mit den Hubwellen 65a, 65b verbunden, insbesondere mittels einer oder mehrerer Umdrehungen aufgewickelt, vorgesehen, dass sich der Draht bei einer gegenläufigen, d.h. mit unterschiedlichem Drehsinn vorgenommenen, rotativen Bewegung der Hubwellen 65a, 65b von der einen Hubwelle oben abwickelt und gleichzeitig auf die andere Hubwelle unten aufwickelt oder umgekehrt. Hierdurch wird gewährleistet, dass die Kraftwirkung des Elektrozylinders 68 direkt und in gleichmäßiger Weise auf beide Kniehebelsysteme übertragen wird. Beispielsweise größere Reibungswiderstände des einen Systems werden durch die Ausgleichsmittel ausgeglichen. Dadurch wird gewährleistet, dass die Bewegung der Hubeinrichtung lediglich einen Freiheitsgrad aufweist und dass die Höhe der Platte 5 in eineindeutiger Weise durch den Ausfahrzustand bzw. Einfahrzustand des Elektrozylinders 68 festgelegt ist. Ausgleichsmittel, die indirekt eine synchronisierte Bewegung der Hubwellen bewirken, wie beispielsweise verlängerte Führungsbuchsen 61, werden im Folgenden auch als indirekte Ausgleichsmittel bezeichnet. Es ist erfindungsgemäß vorgesehen, direkte und indirekte Ausgleichsmittel sowohl kumulativ als auch alternativ einzusetzen. Dabei ist darauf zu achten, dass die Ausgleichsmittel möglichst keinen Schlupf aufweisen. Dies kann beispielsweise dadurch bewerkstelligt werden, dass in den Ausgleichsmitteln Federmittel integriert vorgesehen sind. Der Draht 71 ist in einer besonders vorteilhaften Ausführungsform mit einem Spannmittel bzw. einem Federmittel 70, beispielsweise einer entlang ihrer Achse linear dehnbaren Spiralfeder, versehen wobei der Draht 71 gekreuzt zwischen den Hubwellen 65a, 65b vorgesehen und das Federmittel 70 den Draht 71 spannt. Im in der Figur 4 angegebenen Beispiel ist das Federmittel 70 beispielsweise derart vorgesehen, dass ein möglicherweise vorliegender Schlupf des als Draht 71 vorgesehenen Ausgleichsmittels unterbunden wird. In einer in Figur 4 nicht dargestellten alterntiven Ausführungsform ist der Draht 71 mit einem Spannmittel bzw. einem Federmittel 70 versehen, welches derart an dem Draht 71 bzw. an den Hubwellen 65a, 65b vorgesehen ist, dass es bei einer Anhebung der Platte 5 zu einer Auslenkung des Federmittels 70 kommt. In einerweiteren nicht dargestellten Ausführungsform der
Erfindung ist es vorgesehen, eine Kette oder einen Zahnriemen gekreuzt zwischen den Hubwellen 65a, 65b vorzusehen. In diesem Fall kann mit besonders einfachen Mitteln eine gegenläufige Drehbewegung der Hubwellen 65a, 65b bewirkt werden.According to the invention, at least one, but preferably all, work stations have at least two lifting tables, which are preferably arranged one behind the other in relation to the running direction of the film. The lower tools can be designed in several parts, in which case the number of parts corresponds to the number of lifting devices. An exemplary lifting table is shown in Figure 2. The lifting table 50 has a plate 5 on which the lifting parts 4, 9, 11 can be mounted. The plate 5 is provided with two guide bushes 61 which receive guide rods 51. Further support rods 52 carry a fastening device 53 for the stationary part 3, 8, 12, which is not shown in FIG. 2. The lifting table 50 is provided in accordance with the invention in particular in such a way that it can be attached by means of several suspension points 54, for example four suspension points 54, in the horizontally extending one in FIG 2 mounting rail 15, not shown, can be inserted horizontally. The fastening device 53 and thus the stationary part 3, 8, 12 can, in a preferred embodiment of the lifting table 50, be provided so as to be vertically displaceable relative to the suspension points 54. Such a vertical displacement or movement of the stationary part 3, 8, 12 is provided, for example, by means of a stroke actuator 55, which is provided in particular as an electric motor, for example by means of a spindle drive, or the like. According to the invention, the support rods 52 can also - in addition to their function as support rods 52 - perform a function as guide rods for the plate 5 or the lifting part 4, 9, 11. In this case, provision can be made to dispense with additional guide rods 51 and to use the support rods 52 as guide rods 51. On its lower side, the plate 5 has bearings 62, in which upper ends 63a of rods 63 are pivoted about axes. The rods 63 are rotatably connected at their lower end 63b via a boom 64 to a first lifting shaft 65a or to a second lifting shaft 65b, the lifting shaft itself being rotatably supported in yokes 66. The yokes 66 are firmly connected to the support rods 52. However, the yokes 66 can also be axially displaceable and supported on a spring element in order to compensate for film thickness fluctuations and to avoid that the packaging machine is damaged when the outward stroke is too great. The spring force in this embodiment is somewhat greater than the desired seal or cutting force. The arms 64 and the rods 63 form toggle lever systems which convert a rotary movement of the lifting shafts 65a, 65b into a translatory or linear movement of the plate 5 and thus of the lifting parts 4, 9, 11 relative to the stationary part not shown in FIGS. 2 to 4. Here, the first toggle lever system is attached to the first lifting shaft 65a and the second toggle lever system is attached to the second lifting shaft 65b. Here can the first toggle lever system may include a plurality of toggle levers provided on the first lift shaft 65a. Likewise, the second toggle lever system can comprise a plurality of toggle levers that are provided on the second lifting shaft 65b. In the example of FIGS. 2 to 4, two toggle levers are provided on each of the two lifting shafts 65a, 65b. The first and second lifting shafts 65a, 65b are moved by means of an electric cylinder 68 (Parker Hannifin GmbH Germany) which has a first point of application and a second point of application. For this purpose, a first lever 67a is provided on the first lifting shaft 65a and a second lever 67b on the second lifting shaft 65b. The first point of application is provided at the end of the first lever 67a facing away from the first lifting shaft 65a and the second point of application is provided at the end of the second lever 67b facing away from the second lifting shaft 65b. In the extended state of the lifting device 50 shown in FIG. 2, the lifting part 4, 9, 11 and the plate 5 are in their / their highest position because the arms 64 and the supports 63 are each arranged essentially linearly one behind the other. In this situation, the electric cylinder 68 is completely retracted in the exemplary embodiment shown, ie the points of attack are at the smallest distance. The plate 5 and thus the lifting part 4, 9, 11 are lowered if the extension of the electric cylinder 68 causes the lifting shafts 65a, 65b to rotate and the knee lever systems to buckle. This movement is indicated in FIG. 2 by means of the arrows 69. According to the invention, this movement is carried out uniformly for both lifting shafts 67a, 67b or for both toggle lever systems, so that there is no tilting of the plate 5. For this purpose, compensating means are provided on the lifting device 50 according to the invention. A first possibility of such compensating means is to provide the guide bushes 61. The longer the guide bushes 61 are provided, the better the guidance of the lifting part 4, 9, 11 in the guide rods 51 and thus its protection against tilting. Another possibility of such compensating means is to ensure a synchronized and opposite movement of the lifting shafts 65a, 65b by, for example, a link chain, a toothed belt, a gearwheel arrangement, a traction means - in particular a wire wound several times on the lifting shafts 65a, 65b - or a A combination of such synchronization means is provided between the lifting shafts 65a, 65b. Compensating means that synchronize directly at the lifting shafts - ie with the same Effective boom lengths on both toggle lever systems, in particular a uniform and opposing movement of the lifting shafts 65a, 65b by means of gears, chains or the like, are also referred to below as direct compensating means. In the area of the yoke 66 between the lifting shafts 65a, 65b, a wire (not shown) is connected in a crossed manner to the lifting shafts 65a, 65b, in particular wound up by means of one or more revolutions, in such a way that the wire turns in the opposite direction, ie with a different direction of rotation made, rotary movement of the lifting shafts 65a, 65b unwound from one lifting shaft above and at the same time wound onto the other lifting shaft below or vice versa. This ensures that the force of the electric cylinder 68 is transmitted directly and evenly to both toggle lever systems. For example, larger frictional resistances of one system are compensated for by the compensating means. This ensures that the movement of the lifting device has only one degree of freedom and that the height of the plate 5 is uniquely determined by the extended or retracted state of the electric cylinder 68. Compensating means that indirectly cause a synchronized movement of the lifting shafts, such as, for example, extended guide bushes 61, are also referred to below as indirect compensating means. According to the invention, direct and indirect compensating means are used both cumulatively and alternatively. It is important to ensure that the compensating means have as little slip as possible. This can be accomplished, for example, by providing spring means integrated in the compensating means. In a particularly advantageous embodiment, the wire 71 is provided with a tensioning means or a spring means 70, for example a spiral spring that can be expanded linearly along its axis, the wire 71 being provided in a crossed manner between the lifting shafts 65a, 65b and the spring means 70 tensioning the wire 71. In the example shown in FIG. 4, the spring means 70 is provided, for example, in such a way that any slippage of the compensating means provided as wire 71 is prevented. In an alternative embodiment, not shown in FIG. 4, the wire 71 is provided with a tensioning means or a spring means 70, which is provided on the wire 71 or on the lifting shafts 65a, 65b in such a way that when the plate 5 is raised, it becomes a Deflection of the spring means 70 comes. In a further embodiment of the The invention provides for a chain or a toothed belt to be crossed between the lifting shafts 65a, 65b. In this case, a counter-rotating movement of the lifting shafts 65a, 65b can be effected with particularly simple means.
Der Fachmann erkennt, das auch der Hubtisch auch mit einem Pneumatik- oder Hydraulikzylinder betreibbar ist.Those skilled in the art will recognize that the lifting table can also be operated with a pneumatic or hydraulic cylinder.
Figur 3 zeigt eine Hubvorrichtung mit drei Hubwellen 65 a - c und zwei Linearzylinder 68, wobei der eine Linearzylinder die Hubwellen 65 b und c und der andere Zylinder die Hubwellen 65 a und b antreibt. Der Fachmann erkennt, dass ggf. auch ein Zylinder 68 zum Antrieb ausreicht. Die Linearzylinder sind zum einen mit dem Joch 66 und zum anderen mit den Hebeln 67 a und b bzw. 67 b und c verbunden. Die Hebel 67 a - c sind wiederum drehfest mit den Hubwellen 65 a - c verbunden. Der Fachmann erkennt, dass die Elektrolinearzylinder gegenläufig arbeiten. In der dargestellten oberen Stellung der Platte 5 ist bei dem hinteren Elektrozylinder die Hubstange vollständig eingezogen, während sie bei dem vorderen Elektrozylinder vollständig ausgefahren ist. In der abgesenkten Stellung der Platte 5 sind die Verhältnisse genau umgekehrt. Der Fachmann erkennt, dass die Zylinder 68 jeweils auch an den Wellen 65a bzw. 65c gelagert sein können.FIG. 3 shows a lifting device with three lifting shafts 65 a - c and two linear cylinders 68, one linear cylinder driving the lifting shafts 65 b and c and the other cylinder driving the lifting shafts 65 a and b. The person skilled in the art recognizes that a cylinder 68 may also be sufficient for driving. The linear cylinders are connected on the one hand to the yoke 66 and on the other hand to the levers 67 a and b or 67 b and c. The levers 67 a - c are in turn non-rotatably connected to the lifting shafts 65 a - c. The person skilled in the art recognizes that the electric linear cylinders work in opposite directions. In the illustrated upper position of the plate 5, the lifting rod is fully retracted in the rear electric cylinder, while it is fully extended in the front electric cylinder. In the lowered position of the plate 5, the situation is exactly the opposite. The person skilled in the art recognizes that the cylinders 68 can in each case also be mounted on the shafts 65a or 65c.
Ergänzend wird auf die Ausführung zu Figur 2 verwiesen.In addition, reference is made to the embodiment of FIG. 2.
Figur 4 zeigt zwei in Reihe angeordnet, d.h. in Laufrichtung der Folie hintereinander angeordnete Hubstationen 50. Die Breite der beiden Hubstationen 50 in Laufrichtung entspricht im wesentlichen der Vorschublänge der Folie bei einem Takt. Durch die Hintereinanderschaltung von mehreren Hubstationen können nahezu beliebig lange Vorschübe während eines Taktes realisiert werden, ohne gewisse Untergrenzen beispielsweise bei der Anpressung des Unterwerkzeuges an das Oberwerkzeuges, des Unterdrucks beim Tiefziehen und/oder der Anpressdruck beim Siegeln zu unterschreiten. Es ist deutlich zu erkennen, dass die beiden Hubstationen nicht gleich lang sind. Der Fachmann erkennt, dass dies je nach gewünschtem Andruck des Unter- an das Oberwerkzeug nicht der Fall sein muss. Ferner erkennt der Fachmann, dass die Balken 90, auf denen das jeweilige Unterwerkzeug (nicht dargestellt) liegt entgegen dem Stand der Technik quer zur Laufrichtung angeordnet
sind, was die modulartige Anordnung vereinfacht. Die beiden Hubstationen weisen jeweils einen Antrieb auf, werden jedoch vollkommen synchron betrieben.FIG. 4 shows two lifting stations 50 arranged in a row, ie one behind the other in the running direction of the film. The width of the two lifting stations 50 in the running direction essentially corresponds to the feed length of the film in one cycle. By connecting several lifting stations in series, feeds of almost any length can be realized during one cycle without falling below certain lower limits, for example when the lower tool is pressed against the upper tool, the negative pressure during deep drawing and / or the contact pressure during sealing. It can be clearly seen that the two lifting stations are not the same length. The person skilled in the art recognizes that this does not have to be the case depending on the desired pressure of the lower and upper tool. Furthermore, the person skilled in the art recognizes that the bars 90 on which the respective lower tool (not shown) lies are arranged transversely to the running direction, contrary to the prior art are what simplifies the modular arrangement. The two lifting stations each have a drive, but are operated completely synchronously.
Die Hubvorrichtung kann bei allen Ausführungsbeispielen auch wie in der EP 0 569937, der in der DE 103 51 567.4 ausgebildet sein.
In all of the exemplary embodiments, the lifting device can also be designed as in EP 0 569937, which is designed in DE 103 51 567.4.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
1 Folie 2, 7, 10 Arbeitsstationen 3, 8, 12 Stationärteil/Oberwerkzeug 4, 9, 11 Hubteil/Unterwerkzeug 5 Platte 6 Verpackungsmulde 15 Montageschiene 50 Hubeinrichtung/Hubtisch 51 Führungsstangen 52 Trägerstangen 53 Befestigungsvorrichtung 54 Aufhängepunkt 55 Hubaktuator 61 Führungsbuchsen 62 Lager 63 Stangen 63a/63b obere/untere Enden von Stangen 64 Ausleger 65a- •c erste/zweite Hubwelle 66 Joch 67a- c erster/zweiter Hebel 68 Elektrozylinder 69 Pfeil 70 Federmittel 71 Zugmittel, insbesondere Draht 80 Laufrichtung der Folie 90 Balken
1 film 2, 7, 10 work stations 3, 8, 12 stationary part / upper tool 4, 9, 11 lifting part / lower tool 5 plate 6 packaging tray 15 mounting rail 50 lifting device / lifting table 51 guide rods 52 support rods 53 fastening device 54 suspension point 55 lifting actuator 61 guide bushes 62 bearings 63 rods 63a / 63b upper / lower ends of rods 64 cantilevers 65a- • c first / second lifting shaft 66 yoke 67a- c first / second lever 68 electric cylinder 69 arrow 70 spring means 71 traction means, in particular wire 80 running direction of the film 90 bars
Claims
1. Verpackungsmaschine mit mindestens einer Arbeitsstation (2, 7, 10), die ein Oberwerkzeug (3, 8, 12) und ein vertikal verschiebbares Unterwerkzeug (4, 9, 11) aufweist, dadurch gekennzeichnet, dass das Unterwerkzeug (4, 9, 11) mehrere parallel zueinander angeordnete Hubvorrichtungen (50) und/oder eine Hubvorrichtung mindestens drei Hubwellen (65a, 65b, 65c) aufweist.1. Packaging machine with at least one work station (2, 7, 10), which has an upper tool (3, 8, 12) and a vertically displaceable lower tool (4, 9, 11), characterized in that the lower tool (4, 9, 11) has a plurality of lifting devices (50) arranged parallel to one another and / or a lifting device has at least three lifting shafts (65a, 65b, 65c).
2. Verpackungsmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass die Hubvorrichtungen (50) identisch ausgebildet sind.2. Packaging machine according to claim 1, characterized in that the lifting devices (50) are of identical design.
3. Verpackungsvorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass die Hubvorrichtungen unabhängig voneinander betreibbar sind.3. Packaging device according to one of the preceding claims, characterized in that the lifting devices can be operated independently of one another.
4. Verpackungsvorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass die Hubbvorrichtungen (50) von einer Steuereinheit steuerbar sind.4. Packaging device according to one of the preceding claims, characterized in that the lifting devices (50) can be controlled by a control unit.
5. Verpackungsvorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass eine Hubvorrichtung zwei Antriebsmittel (68) aufweist.5. Packaging device according to one of the preceding claims, characterized in that a lifting device has two drive means (68).
6. Verpackungsvorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, dass jedes Antriebsmittel jeweils mit mindestens zwei Hubwellen (65 a - c) zusammenwirkt.6. Packaging device according to one of the preceding claims, characterized in that each drive means interacts with at least two lifting shafts (65 a - c).
7. Verpackungsmaschine nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, dass die Antriebsmittel (68) gegensinnig arbeiten. 7. Packaging machine according to one of claims 5 or 6, characterized in that the drive means (68) work in opposite directions.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410006118 DE102004006118A1 (en) | 2004-02-06 | 2004-02-06 | Packaging machine with several lifting devices per work station |
PCT/EP2005/001121 WO2005075291A2 (en) | 2004-02-06 | 2005-02-04 | Packaging machine comprising several lifting devices per working station |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1713690A2 true EP1713690A2 (en) | 2006-10-25 |
Family
ID=34801734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05707193A Withdrawn EP1713690A2 (en) | 2004-02-06 | 2005-02-04 | Packaging machine comprising several lifting devices per working station |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1713690A2 (en) |
DE (1) | DE102004006118A1 (en) |
NO (1) | NO20063938L (en) |
WO (1) | WO2005075291A2 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005017755A1 (en) | 2005-04-15 | 2006-10-19 | Cfs Germany Gmbh | Foodstuffs packaging machine, has antenna for data exchange between transponder and computer- and/or control unit, where data are transmitted to transponder and are accessed from transponder by antenna |
US7665281B2 (en) | 2005-07-13 | 2010-02-23 | Cfs Germany Gmbh | Machine for making packaging with form-fit connection |
DE102006050415A1 (en) * | 2006-10-20 | 2008-04-24 | Cfs Germany Gmbh | Packaging machine with a controllable pneumatic / hydraulic drive |
PL1988024T5 (en) | 2007-05-04 | 2018-06-29 | Gea Food Solutions Germany Gmbh | Packaging machine with foreign substance detection |
DE102009008452B3 (en) * | 2009-02-11 | 2010-10-07 | Multivac Sepp Haggenmüller Gmbh & Co. Kg | Packaging machine with a workstation having an electric hoist with coarse and fine stroke |
DE102010019576B4 (en) | 2010-05-05 | 2023-01-26 | Gea Food Solutions Germany Gmbh | Packaging machine with an exchangeable drive for the lifting device |
DE102017123805A1 (en) | 2017-10-12 | 2019-04-18 | Weber Maschinenbau Gmbh Breidenbach | Workstation with lifting mechanism for a packaging machine |
PL3715267T3 (en) * | 2019-03-26 | 2022-01-10 | Weber Maschinenbau Gmbh Breidenbach | Work station for a packing 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 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2010070A1 (en) * | 1968-06-04 | 1970-02-13 | Multivac Sepp Haggenmul | |
US3524298A (en) * | 1969-07-01 | 1970-08-18 | Mahaffy & Harder Eng Co | Automatic packaging apparatus |
CA1002442A (en) * | 1972-01-12 | 1976-12-28 | Mahaffy And Harder Engineering Company | Continuous movement packaging machine |
DE2440372A1 (en) * | 1974-08-23 | 1976-03-04 | Josef Finnah | Packing and sealing line for foil wrapped workpieces - has vertically movable working tools arranged along conveying track |
US4034536A (en) * | 1976-06-11 | 1977-07-12 | Mahaffy & Harder Engineering Company | Packaging apparatus and techniques |
DE3173115D1 (en) * | 1981-08-03 | 1986-01-16 | Hajek Heinrich | Device for manufacturing packages of clinging and/or sticky foils |
DE8809001U1 (en) * | 1988-07-13 | 1989-09-07 | Fabricius, Karl, Hünenberg | Lifting drive for a punch on packaging machines |
DE4216210A1 (en) * | 1992-05-15 | 1993-11-18 | Multivac Haggenmueller Kg | Workstation with an upper part and a lower part movable relative to it |
US5517805A (en) * | 1994-11-08 | 1996-05-21 | Epstein; Moshe | Vacuum-packaging machine with translating tools |
DE29621761U1 (en) * | 1996-12-14 | 1998-04-09 | Dixie-Union GmbH & Co. KG, 87437 Kempten | Packaging machine with a chamber consisting of an upper part and a lower part |
DE19734513A1 (en) * | 1997-08-08 | 1999-02-11 | Multivac Haggenmueller Kg | Lifting device for a work station of a packaging machine |
DE59709858D1 (en) * | 1997-08-08 | 2003-05-22 | Multivac Haggenmueller Kg | Lifting device for a work station of a packaging machine |
-
2004
- 2004-02-06 DE DE200410006118 patent/DE102004006118A1/en not_active Withdrawn
-
2005
- 2005-02-04 WO PCT/EP2005/001121 patent/WO2005075291A2/en not_active Application Discontinuation
- 2005-02-04 EP EP05707193A patent/EP1713690A2/en not_active Withdrawn
-
2006
- 2006-09-04 NO NO20063938A patent/NO20063938L/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2005075291A3 * |
Also Published As
Publication number | Publication date |
---|---|
DE102004006118A1 (en) | 2005-08-25 |
WO2005075291A2 (en) | 2005-08-18 |
NO20063938L (en) | 2006-09-04 |
WO2005075291A3 (en) | 2006-02-16 |
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