EP3838769B1 - Poste de travail pour une machine d'emballage doté d'un mécanisme de levage pourvu de mécanisme à genouillère - Google Patents

Poste de travail pour une machine d'emballage doté d'un mécanisme de levage pourvu de mécanisme à genouillère Download PDF

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Publication number
EP3838769B1
EP3838769B1 EP20210091.3A EP20210091A EP3838769B1 EP 3838769 B1 EP3838769 B1 EP 3838769B1 EP 20210091 A EP20210091 A EP 20210091A EP 3838769 B1 EP3838769 B1 EP 3838769B1
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EP
European Patent Office
Prior art keywords
lower tool
actuator assembly
tool
toggle lever
work station
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.)
Active
Application number
EP20210091.3A
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German (de)
English (en)
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EP3838769A1 (fr
Inventor
Markus WÄGELE
Florian Lutz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Multivac Sepp Haggenmueller GmbH and Co KG
Original Assignee
Multivac Sepp Haggenmueller GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Publication of EP3838769A1 publication Critical patent/EP3838769A1/fr
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Publication of EP3838769B1 publication Critical patent/EP3838769B1/fr
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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
    • 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
    • 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
    • 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
    • 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
    • B65B61/06—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 by cutting

Definitions

  • the present invention relates to work stations for packaging machines with a lifting mechanism for lifting a lower tool.
  • thermoformer designed as a thermoformer, in which at least one tool with a toggle lever can be moved into a lowered and a raised position.
  • the tool has an electric linear drive as a drive, which drives the toggle lever.
  • the DE 42 16 210 A1 describes a packaging machine with a deep-drawing station, which has an upper part and a lower part that can be lowered into a lowered position or raised into a raised position relative thereto.
  • a lifting device which includes a toggle lever system, is provided for moving the lower part.
  • the toggle lever system is actuated by a piston-cylinder device.
  • the DE 10 2009 008 452 B3 describes a thermoforming packaging machine with a work station which includes a stationary mold half and a movable mold half.
  • the stationary tool half is attached to upper ends of guide rails.
  • the movable mold half is movable along the guide rails via guide bushings and can therefore be moved towards and away from the stationary mold half.
  • the movable die is moved toward and away from the stationary die by an electric jack.
  • the electric hoist consists of a first lifting device for effecting a lifting movement with a large stroke and a second lifting device for effecting a lifting movement with a small stroke.
  • the second lifting device generates a force which presses the movable mold half against the stationary mold half.
  • the first lifting device consists of a first electric motor and a toggle lever linkage.
  • the first lifting device causes a large lift of the movable mold half, which is reached when a dead center of the toggle linkage is reached.
  • the second lifting device comprises an electric motor and an eccentric shaft which connects a first lever of the toggle linkage to a second lever of the toggle linkage. When the output shaft of the second electric motor is rotated, the second lever of the toggle linkage is raised or lowered relative to the first lever of the toggle linkage, thereby creating a stroke of the second lever.
  • WO 2005075291 A2 relates to a work station with two actuator assemblies, the work station being used for a packaging machine with upper and lower tools and a lifting mechanism.
  • the invention relates to a workstation for a packaging machine according to claim 1 and a method for operating a workstation for a packaging machine according to claim 12.
  • the dependent claims specify advantageous embodiments of the invention.
  • a work station according to the invention for a packaging machine comprises an upper tool, a lower tool and a lifting mechanism.
  • the lower tool is guided for a closing movement directed toward the upper tool along a vertical direction.
  • the elevator includes a toggle mechanism that connects the lower tool and a support structure.
  • the lifting mechanism has a first actuator arrangement and a second actuator arrangement.
  • the first actuator assembly is configured to apply a first force to raise the lower die.
  • the second actuator assembly is configured to apply a second force to raise the lower die.
  • the first actuator arrangement acts on the lower tool, bypassing the toggle lever mechanism.
  • the second actuator assembly engages the toggle mechanism.
  • both forces that actually lead to lifting of the lower die and forces that act on the lower die in an upward direction, but do not result in actual movement of the lower die are "lifting the lower die” forces.
  • a pressing force with which the lower tool is pressed from below onto the upper tool is a “force for raising the lower tool” or part of such a force within the meaning of the invention.
  • the individual actuator arrangements can be dimensioned smaller than if only a single actuator arrangement were provided.
  • a suitable adjustment of the lifting forces acting on the lower tool depending on the operating situation of the work station is simplified. For example, only one of the two actuator assemblies can be active in certain operating states in order to exert a force on the lower tool, while the other actuator assembly is inactive. In operating states where an increased force is required to lift the lower tool, in particular when the lower tool is to be pressed against the upper tool, both actuator arrangements can be active.
  • a toggle lever mechanism has the property that the transmission ratio between the force applied and the resulting force shifts continuously during the movement of the toggle lever mechanism.
  • the toggle lever mechanism thus has ranges of motion in which it provides a transmission ratio that is favorable for high power transmission, but also ranges of motion in which the transmission ratio is unfavorable for high power transmission. Since the first actuator arrangement acts on the lower tool bypassing the toggle lever mechanism, the effect of the first force applied by the first actuator arrangement on the lower tool is independent of the instantaneous operating state of the toggle lever mechanism. This ensures that the lower tool can also be raised efficiently when the toggle lever mechanism is in a state in which it has a transmission ratio that is unfavorable for good power transmission.
  • the second actuator arrangement acts on the toggle lever mechanism and allows the leverage provided by the toggle lever mechanism to be used to lift the lower tool.
  • the first actuator arrangement can act directly on the lower tool.
  • the first actuator arrangement can act on an element that is rigidly connected to the lower tool.
  • the first actuator arrangement can act on an element which carries the lower tool without there being an articulated connection between the lower tool and the element which the first actuator arrangement acts on.
  • the first actuator arrangement can act on the lower tool without the interposition of an articulated connection. It is also conceivable that, for example, there is at most one articulated connection between the lower tool and the actuator arrangement.
  • the lower tool can be raised relative to the support structure by means of the first force.
  • the lower tool can be raised in relation to the upper tool by means of the first force.
  • the lower tool can be raised relative to the support structure by means of the second force.
  • the lower tool can be raised in relation to the upper tool by means of the second force.
  • the upper tool can be fixed in place on a frame of the work station.
  • the support structure may be fixedly attached to a frame of the workstation or may be part of the frame of the workstation.
  • the support structure can be stationary with respect to the upper tool.
  • the first actuator assembly may be configured to raise the die a first stroke.
  • the second actuator assembly may be configured to raise the die a second stroke.
  • the first hub can be larger than the second hub.
  • the first actuator arrangement may be optimized for providing a large stroke and the second actuator arrangement may be optimized for providing a high force to lift the lower die. The greater first stroke of the first actuator arrangement can make it possible to move the lower tool relatively close to the upper tool by means of the first actuator arrangement.
  • the second actuator assembly may be configured to be activated to apply the second force after the lower tool is lifted by the first actuator assembly.
  • the first actuator assembly and the second actuator assembly may be configured to at least temporarily apply the first force and the second force simultaneously.
  • a particularly high force for lifting the lower tool can be provided at times.
  • a high force for pressing the lower tool onto the upper tool can be achieved.
  • raising the lower tool by the first actuator arrangement leads to an adjustment of the toggle lever mechanism even without active operation of the second actuator arrangement. If the toggle lever mechanism is adjusted when the lower tool is raised by the first actuator arrangement, the translation of the toggle lever mechanism changes.
  • the presence of the unfavorable translation range of the toggle lever mechanism does not have a negative effect when the lower tool is raised by the first actuator arrangement, since the first actuator arrangement acts on the lower tool bypassing the toggle lever mechanism.
  • an unfavorable translation range of the toggle lever mechanism can be overcome during the lifting of the lower tool by the first actuator arrangement.
  • raising of the hoist by the first actuator assembly results in stretching of the toggle mechanism.
  • stretching the toggle lever mechanism the translation for the second force for raising the lower tool can be increased by the second actuator arrangement.
  • the second actuator arrangement can be configured to provide a contact pressure force for pressing the lower tool onto the upper tool.
  • the toggle lever mechanism comprises a single toggle lever construction which connects the lower tool and the support structure to one another.
  • the toggle mechanism comprises a plurality of toggle structures each connecting the lower tool and the support structure to one another.
  • the second actuator assembly may include an element variable in length.
  • the variable-length element can act simultaneously on two opposite toggle constructions. By attacking the variable-length element on two opposite toggle constructions, an improved introduction of force into the toggle constructions can be achieved.
  • the element variable in length can, for example, comprise a pneumatic cylinder, a spindle drive or an electric linear drive.
  • the first actuator arrangement and/or the second actuator arrangement can have an element variable in length. This can be, for example, a pneumatic cylinder, a spindle drive or an electric linear drive.
  • the bottom tool can be suspended from rods.
  • the bars can, for example, be firmly connected to the upper tool.
  • the first actuator assembly may be suspended from the rods.
  • the second actuator assembly may be suspended from the rods.
  • the second actuator arrangement can act on the toggle lever mechanism in such a way that a translation of the second force applied by the second actuator arrangement by the toggle lever mechanism develops a greater effect for lifting the lower tool the further the toggle lever mechanism is stretched.
  • the invention also relates to a method for operating a work station for a packaging machine.
  • the method can be suitable, designed and/or configured for operating the workstation according to the invention. Features described with regard to the workstation can be transferred to the method and vice versa.
  • a method for operating a workstation for a packaging machine includes raising a lower tool along a vertical direction towards an upper tool by applying a first force by means of a first actuator arrangement.
  • the first actuator arrangement acts on the lower tool bypassing a toggle lever mechanism, the toggle lever mechanism connecting the lower tool and a support structure to one another.
  • the method also includes applying a second force to press the lower tool onto the upper tool by means of a second actuator arrangement.
  • the second actuator arrangement acts on the toggle lever arrangement.
  • the toggle lever arrangement is preferably adjusted.
  • the toggle lever arrangement is preferably initially adjusted into a working area with improved leverage (improved transmission) by lifting the lower tool by means of the first actuator arrangement.
  • the second actuator arrangement then actively actuates the toggle lever arrangement to raise the lower tool further and/or to press the lower tool against the upper tool.
  • the first force can also be applied, at least temporarily.
  • the packaging machine 1 shows an exemplary packaging machine 1 in which a work station 3 according to the invention can be used.
  • the packaging machine 1 is designed as a thermoforming packaging machine.
  • the packaging machine 1 comprises a machine frame 5 on which a forming station 7, a sealing station 9 and a cutting station 11 are arranged.
  • the packaging machine 1 comprises a conveyor device 13 for conveying a lower film web 15 along a transport direction T.
  • the lower film web 15 is fed in succession to the forming station 7, to an insertion section 17 located between the forming station 7 and the sealing station 9, to the sealing station 9 and to the cutting station 11.
  • packaging troughs are formed in the lower film web 15 by deep-drawing.
  • the forming station 7 comprises an upper part 7a of the forming tool and a lower part 7b of the forming tool which can be moved relative thereto and which cooperate to deep-draw the packaging troughs in the web of lower film 15 .
  • the packaging troughs formed in the lower film web 15 are filled with products to be packaged.
  • the filled packages are sealed in the sealing station 9 by sealing an upper film 19 to the lower film 15.
  • the sealing station 9 comprises an upper part 9a of the sealing tool and a lower part 9b of the sealing tool which is movable relative thereto and which interact in order to seal the packaging cavities with the upper film 19 .
  • the cutting station 11 comprises an upper part 11a of the cutting tool and a lower part 11b of the cutting tool which can be moved relative thereto.
  • the upper part 11a of the cutting tool and the lower part 11b of the cutting mechanism work together to separate the packaging from the composite film.
  • the invention relates to a work station 3 for a packaging machine 1.
  • the work station 3 can be, for example, the forming station 7, the sealing station 9 or the cutting station 11 of a thermoforming packaging machine.
  • the work station 3 it would also be conceivable for the work station 3 to be used in a packaging machine 1 of a different type, for example in a tray sealing machine.
  • the work station 3 comprises an upper tool 21 and a lower tool 23.
  • Examples of the upper tool 21 in the packaging machine 1 described above are the upper forming tool part 7a, the upper sealing tool part 9a or the upper cutting tool part 11a.
  • Examples of the lower die 23 in the packaging machine 1 described above are the lower die 7b, the lower die sealing 9b, or the lower die 11b.
  • FIG. 2 shows in a schematic perspective view a workstation 3 according to an embodiment.
  • this is a sealing station 9.
  • the construction described can also be transferred to other work stations 3 by replacing the upper tool 21 and the lower tool 23 with differently configured tools.
  • the upper tool 21 is attached to the machine frame 5 in a stationary manner. This can be done, for example, via screw holes.
  • the upper tool 21 in 2 may have coolant holes 25 .
  • Vertical rods 27 are attached to the upper tool 21 .
  • the vertical rods 27 extend downward from the upper tool 21 .
  • the bars 27 provide vertical guidance for the die 23 .
  • the lower tool 23 is guided along a vertical direction for movement toward the upper tool 21 .
  • the lower tool 23 comprises a working part 23a which cooperates with the upper tool 21 when the lower tool 23 is raised along the vertical direction.
  • the working part 23a of the lower tool 23 comprises recesses for at least partially receiving packaging trays.
  • the lower tool 23 can first be brought closer to the upper tool 21 along the vertical direction and then pressed against it in order to provide a working pressure. It goes without saying that when the lower tool 23 is pressed against the upper tool 21 , one or more components can be present between the lower tool 23 and the upper tool 21 .
  • the lower film web 15 can be present between the lower part 7b of the forming tool and the upper part 7a of the forming tool, or, in the case of a sealing station 9, the lower film web 15 and the upper film 19 can be present between the lower part 9b of the sealing tool and the upper part 9b of the sealing tool.
  • the lower tool 23 also includes a support part 23b, on which the working part 23a is supported.
  • the Support part 23b of the lower tool 23 has two parallel, horizontal support elements 29.
  • the working part 23a of the lower tool 23 can simply stand on the support part 23b.
  • the working part 23a can be firmly connected to the support part 23b, for example by screw connections. No articulated connection is preferably provided between the support part 23b and the working part 23a of the lower tool 23 .
  • the work station 3 includes a lifting gear 31 for lifting the lower tool 23 and for applying the closing force for pressing the lower tool 23 onto the upper tool 21.
  • the lifting mechanism 31 comprises a first actuator arrangement 33 for applying a first force to raise the lower tool 23.
  • the first actuator arrangement 33 comprises a first pneumatic cylinder 35 which is fixed to the two carrier elements 29 of the support part 23b of the lower tool 23 associated intermediate plate 37 attacks.
  • an extendable end of the first pneumatic cylinder 35 is attached to the intermediate plate 37 .
  • the first actuator arrangement 33 therefore acts directly on the lower tool 23 .
  • the lifting mechanism 31 also comprises a toggle lever mechanism 41.
  • the toggle lever mechanism 41 comprises a plurality of toggle lever constructions 43.
  • the individual toggle lever constructions 43 are designed analogously to one another in the illustrated embodiment.
  • the toggle mechanism 41 includes four toggle structures 43 each mounted on one of the vertical bars 27 .
  • the toggle structures 43 each comprise a first lever 45 and a second lever 47.
  • the first lever 45 is pivotally connected to the associated rod 27 about a horizontal axis.
  • the second lever 47 is connected to the lower tool 23 so as to be rotatable about a horizontal axis.
  • the first lever 45 and the second lever 47 are connected to one another at a connection point 49 so as to be rotatable about a horizontal axis.
  • the lifting gear 31 also includes a second actuator arrangement 51, which includes two second pneumatic cylinders 53 in the embodiment shown.
  • the second pneumatic cylinder 53 each connect two opposite toggle constructions 43. As shown in FIG 4 and 6 As can be seen, the second pneumatic cylinders 53 are connected to the associated toggle lever constructions 43 in such a way that the toggle lever constructions 43 are erected when the second pneumatic cylinders 53 are extended and thus a force for lifting the lower tool 23 is generated.
  • a retraction of the second pneumatic cylinder ie a shortening of the second pneumatic cylinder 53 , on the other hand, can lead to the toggle lever constructions 43 collapsing and the lower tool 23 being lowered.
  • the first actuator assembly 33 engages, as shown in FIG 3 visible, bypassing the toggle lever mechanism 41 on the lower tool 23.
  • the action of force on the lower tool 23 by the first actuator arrangement 33 therefore does not take place via the toggle lever mechanism 41 .
  • the second actuator arrangement 51 acts on the toggle lever mechanism 41 .
  • a power transmission for raising the lower tool 23 by the second actuator arrangement 51 takes place according to the translation of the toggle lever mechanism 41.
  • the first actuator assembly 33 for raising the lower tool 23 is actuated.
  • the first pneumatic cylinder 35 is extended and raises the lower tool 23 .
  • the second actuator arrangement 51 is in a freewheeling mode.
  • the second pneumatic cylinders 53 can therefore be extended or retracted essentially without resistance.
  • the toggle lever mechanism 41 is thus put into a state by the lifting of the lower tool 23 by means of the first actuator arrangement 33, which acts on the lower tool 23 bypassing the toggle lever mechanism 41, in which there is an improved translation when the toggle lever mechanism 41 is actuated by the second actuator arrangement 51 .
  • the second actuator arrangement 51 is activated and acts on the toggle lever mechanism 41 to raise the lower tool 23 further or to press the lower tool 23 against the upper tool 21. In concrete terms, this takes place through an exit the second pneumatic cylinder 51 and a resulting power transmission by means of the toggle lever mechanism 41 to the lower tool 23. This procedure is particularly efficient since the toggle lever mechanism 41 has already been brought into a working area with a good translation by the first actuator arrangement 51 before the activation of the second actuator arrangement 51.
  • the first actuator arrangement 33 can essentially be dimensioned in such a way that it applies the force required for lifting the lower tool 23 , ie can at least counteract the weight of the lower tool 23 .
  • the additional force for pressing the lower tool 23 against the upper tool 21 can be provided by the second actuator arrangement 51 .
  • the second pneumatic cylinders 53 of the second actuator arrangement 51 can be dimensioned relatively small due to the distribution of the force between the first actuator arrangement 33 and the second actuator arrangement 51 when the lower tool 23 is pressed against the upper tool 21 and due to the good transmission ratio in the toggle lever mechanism 41.
  • the lower die 23, the first actuator assembly 33 and the second actuator assembly 51 are supported by the vertical rods 27. As shown in FIG. The stroke of the lower tool 23 can be adjusted in a simple manner by adjusting the vertical rods 27 on the upper tool 21 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Forklifts And Lifting Vehicles (AREA)

Claims (15)

  1. Poste de travail (3) pour une machine d'emballage (1), comprenant
    un outil supérieur (21) et un outil inférieur (23), dans lequel l'outil inférieur (23) est guidé pour un déplacement de fermeture dirigé le long d'une direction verticale vers l'outil supérieur (21) ; et
    un mécanisme de levage (31) comprenant un mécanisme à genouillère (41), qui relie l'outil inférieur (23) et une structure de support l'un à l'autre,
    dans lequel le mécanisme de levage (31) comprend un premier ensemble d'actionneur (33) configuré pour appliquer une première force pour lever l'outil inférieur (23) et un second ensemble d'actionneur (51) configuré pour appliquer une seconde force pour lever l'outil inférieur (23), et
    dans lequel le premier ensemble d'actionneur (33) vient en prise avec l'outil inférieur (23) en évitant le mécanisme à genouillère (41) et le second ensemble d'actionneur (51) vient en prise avec le mécanisme à genouillère (41).
  2. Poste de travail selon la revendication 1, dans lequel ledit premier ensemble d'actionneur (33) est configuré pour lever ledit outil inférieur (23) sur une première course et ledit second ensemble d'actionneur (51) est configuré pour lever ledit outil inférieur (23) sur une seconde course, dans lequel ladite première course est supérieure à ladite seconde course.
  3. Poste de travail selon la revendication 1 ou 2, dans lequel le second ensemble d'actionneur (51) est configuré pour être activé pour appliquer la seconde force après que l'outil inférieur (23) ait été levé par le premier ensemble d'actionneur (33).
  4. Poste de travail selon l'une quelconque des revendications précédentes, dans lequel le premier ensemble d'actionneur (33) et le second ensemble d'actionneur (51) sont configurés pour appliquer simultanément au moins temporairement la première force et la seconde force.
  5. Poste de travail selon l'une quelconque des revendications précédentes, dans lequel un levage de l'outil inférieur (23) par le premier ensemble d'actionneur (33) entraîne un ajustement du mécanisme à genouillère (41) même sans fonctionnement actif du second ensemble d'actionneur (51).
  6. Poste de travail selon l'une quelconque des revendications précédentes, dans lequel un levage de l'outil inférieur (23) par le premier ensemble d'actionneur (33) provoque un étirement du mécanisme à genouillère (41).
  7. Poste de travail selon l'une quelconque des revendications précédentes, dans lequel le second ensemble d'actionneur (51) est configuré pour fournir une force de pression afin de presser l'outil inférieur (23) contre l'outil supérieur (21).
  8. Poste de travail selon l'une quelconque des revendications précédentes, dans lequel le mécanisme à genouillère (41) comprend une pluralité de constructions de genouillère (43) qui relient chacune l'outil inférieur (23) et la structure de support, dans lequel le second ensemble d'actionneur (51) vient en prise de préférence au niveau de la pluralité de constructions de genouillère (43).
  9. Poste de travail selon la revendication 8, dans lequel le second ensemble d'actionneur (51) comprend un élément à longueur variable, en particulier un cylindre pneumatique (53), qui agit simultanément sur deux constructions de genouillère (43) opposées.
  10. Poste de travail selon l'une quelconque des revendications précédentes, dans lequel le premier ensemble d'actionneur (33) et/ou le second ensemble d'actionneur (51) comprennent un élément à longueur variable, en particulier un cylindre pneumatique (35, 53).
  11. Poste de travail selon l'une quelconque des revendications précédentes, dans lequel l'outil inférieur (23) est suspendu à des tiges (27), de préférence dans lequel le premier et/ou le second ensemble d'actionneur (33, 51) est également suspendu aux tiges (27).
  12. Procédé pour faire fonctionner un poste de travail (3) pour une machine d'emballage (1), comprenant les étapes consistant à
    lever un outil inférieur (23) le long d'une direction verticale vers un outil supérieur (21) en appliquant une première force au moyen d'un premier ensemble d'actionneur (33) qui vient en prise avec l'outil inférieur (23) en évitant un mécanisme à genouillère (41) qui relie l'outil inférieur (23) et une structure de support ;
    appliquer une seconde force pour presser l'outil inférieur (23) contre l'outil supérieur (21) au moyen d'un second ensemble d'actionneur (51) qui agit sur le mécanisme à genouillère (41).
  13. Procédé selon la revendication 12, dans lequel le mécanisme à genouillère (41) est ajusté par un levage de l'outil inférieur (23) au moyen du premier ensemble d'actionneur (33).
  14. Procédé selon la revendication 12 ou 13, dans lequel le mécanisme à genouillère (41) est d'abord ajusté en levant l'outil inférieur (23) au moyen du premier ensemble d'actionneur (33) dans une zone de travail avec un effet de levier amélioré, puis le second ensemble d'actionneur (51) actionne activement l'agencement de genouillère (41) pour lever davantage l'outil inférieur (23) et/ou pour presser l'outil inférieur (23) contre l'outil supérieur (21).
  15. Procédé selon l'une quelconque des revendications 12 à 14, dans lequel la première force est également appliquée au moins temporairement pendant l'application de la seconde force.
EP20210091.3A 2019-12-17 2020-11-26 Poste de travail pour une machine d'emballage doté d'un mécanisme de levage pourvu de mécanisme à genouillère Active EP3838769B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019219833.3A DE102019219833A1 (de) 2019-12-17 2019-12-17 Arbeitsstation für eine Verpackungsmaschine mit einem Hubwerk mit Kniehebelmechanismus

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EP3838769A1 EP3838769A1 (fr) 2021-06-23
EP3838769B1 true EP3838769B1 (fr) 2022-12-28

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US (1) US11713152B2 (fr)
EP (1) EP3838769B1 (fr)
CN (1) CN214649364U (fr)
DE (1) DE102019219833A1 (fr)
ES (1) ES2936655T3 (fr)

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DE102020134816A1 (de) * 2020-12-23 2022-06-23 Multivac Sepp Haggenmüller Se & Co. Kg Hubwerk

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US3552093A (en) * 1968-09-16 1971-01-05 Int Inpak Inc Packaging machines
DE4216210A1 (de) * 1992-05-15 1993-11-18 Multivac Haggenmueller Kg Arbeitsstation mit einem Oberteil und einem relativ dazu bewegbaren Unterteil
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ES2197273T5 (es) 1997-08-08 2007-11-01 Multivac Sepp Haggenmuller Kg Dispositivo de elevacion para una estacion de trabajo de una maquina envasadora.
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DE102009017871B4 (de) * 2009-04-17 2014-08-28 Schuler Pressen Gmbh & Co. Kg Auswerfereinrichtung für eine Umformeinrichtung
DE102017123805A1 (de) * 2017-10-12 2019-04-18 Weber Maschinenbau Gmbh Breidenbach Arbeitsstation mit Hubmechanismus für eine Verpackungsmaschine

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US20210179307A1 (en) 2021-06-17
US11713152B2 (en) 2023-08-01
ES2936655T3 (es) 2023-03-21
EP3838769A1 (fr) 2021-06-23
CN214649364U (zh) 2021-11-09
DE102019219833A1 (de) 2021-06-17

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