EP4275850A1 - Device for punching a conveyed flat element - Google Patents

Device for punching a conveyed flat element Download PDF

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Publication number
EP4275850A1
EP4275850A1 EP23172010.3A EP23172010A EP4275850A1 EP 4275850 A1 EP4275850 A1 EP 4275850A1 EP 23172010 A EP23172010 A EP 23172010A EP 4275850 A1 EP4275850 A1 EP 4275850A1
Authority
EP
European Patent Office
Prior art keywords
punching
tool
crankshaft
punching tool
connecting rod
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.)
Pending
Application number
EP23172010.3A
Other languages
German (de)
French (fr)
Inventor
Klaus von Seggern
Jörg von Seggern
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.)
Joerg von Seggern Maschinenbau GmbH
Original Assignee
Joerg von Seggern Maschinenbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Joerg von Seggern Maschinenbau GmbH filed Critical Joerg von Seggern Maschinenbau GmbH
Publication of EP4275850A1 publication Critical patent/EP4275850A1/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/14—Crank and pin means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2628—Means for adjusting the position of the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • 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
    • B65B61/065—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 by punching out
    • 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
    • B65B61/08—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 using rotary cutters
    • 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
    • B65B65/04—Mechanisms for converting a continuous rotary motion to intermittent rotary motion, e.g. Geneva drives
    • 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
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4436—Materials or surface treatments therefore

Definitions

  • the invention relates to a device for punching a conveyed surface element, in particular for punching a strip with containers formed in this strip, in particular by deep drawing, comprising at least one upper punching tool and comprising at least one lower punching tool, which can be moved relative to one another to carry out the punching.
  • Containers are regularly arranged in a bowl shape within conveyed surface elements, in particular within conveyed belts made of foil.
  • the trays are arranged regularly by deep-drawing the film. Treatment lines are known for this, in which a strip is transported further after the container has been deep-drawn.
  • the containers are arranged in certain areas of the belt, they can subsequently be filled and then closed, for example by sealing on a film.
  • the containers formed into the belt must then be separated by separating them from each other in the longitudinal direction of the belt and in the transverse direction to the belt conveying direction. This separation is carried out using generic devices.
  • a band into which containers are formed by deep drawing has a thickness of, for example, 1 millimeter. It is usually made of plastic. Punching such a material requires high forces.
  • a servo drive which includes a servo motor with a belt drive and spindle. With With such a servo drive, a lower punching tool is raised in order to guide it against the upper punching tool in order to carry out the punching.
  • the invention is therefore based on the object of providing a device for punching of the type mentioned at the outset, with which punching with high forces is possible without the occurrence of bends in the tools involved.
  • At least one movement device for a punching tool has at least one crankshaft lying approximately transversely to the conveying direction of the surface element and transversely to the direction of movement of the punching tool, to which connecting rod elements are articulated, the ends of which facing away from the crankshaft are articulated to the punching tool.
  • a crankshaft for driving at least one tool for punching the surface element.
  • a crankshaft can initially be made solid so that it can absorb high forces. It can be supported several times to prevent it from bending.
  • the crankshaft is arranged transversely to the conveying direction of the surface element and also transversely to the direction of movement of the tool. It follows that the crankshaft can extend, for example, over the entire width of the conveyed belt and can therefore support a punching tool that approaches the belt over the entire width of the belt. This counteracts any deflection of the tool due to the high forces.
  • connecting rod elements This support of the tool is provided by the connecting rod elements provided.
  • Several connecting rod elements are provided; they are distributed over the longitudinal extent of the crankshaft.
  • the connecting rod elements are articulated on the one hand on the crankshaft and on the other hand on the tool, so that forces emanating from the crankshaft can be transmitted to the tool during rotation of the crankshaft.
  • the punching tool is guided displaceably in a stand structure.
  • the punching tool is held in sliding guides, which are components of the frame, so that the punching tool is guided in the frame, for example, so that it can move upwards and downwards.
  • the punching lower tool is accommodated on a guide in the stand structure and that the connecting rod elements are articulated on this guide.
  • a guide is provided for the punching lower tool, which is displaceably accommodated in the frame.
  • the punching lower tool is arranged on this guide; for example, it rests on this guide.
  • the connecting rod elements are articulated on the guide and are therefore articulated in the area of the lower punching tool. Forces are transferred from the connecting rod elements to the guide and thus also to the punching lower tool held on the guide.
  • crankshaft has crank sections; the connecting rod elements are preferably articulated on these crank sections.
  • a rotation of the crankshaft can be converted into a translational movement of the tool due to the crank design and the articulation of the connecting rods, since the rotational movement of the crank is transmitted to the tool via the connecting rods and this is moved translationally in its displaceable guide in the frame.
  • adjacent crank sections have an offset from one another on the circumference of the crankshaft.
  • Adjacent crank sections can be arranged in a line on the circumference of the crankshaft. If, as suggested by this development, adjacent crank sections on the circumference of the crankshaft are offset from one another, then a defined force input via the connecting rod elements into the tool, for example the lower tool, is possible. It can thus be provided that a force is first introduced into one end of the tool and then forces are only introduced into other sections along the longitudinal extent of the tool. This allows force peaks to be placed on certain areas of the tool, resulting in a force rolling effect and thus an active cutting effect.
  • the punching tool can have a top bar in the punching area.
  • This top bar is preferably designed in one piece and covers the entire punching area.
  • the top bar is preferably hardened and flexible so that no offset occurs over the punching area.
  • At least one drive is assigned to the crankshaft, for example an electric motor.
  • Both punching tools are preferably held in the frame so that they can be adjusted in height. If the crankshaft is assigned to the lower punching tool, then the upper punching tool can also be held in the frame in a height-adjustable manner.
  • the device in Figure 1 has a machine frame 1 that supports several work stations. 2 denotes a deep-drawing station.
  • containers 5 are formed into a surface element 4 unrolled from a roll 3, in particular a film strip.
  • the surface element 4 is transported further along arrow 6, for example filled with objects and guided to a sealing station 6.
  • the containers 5 are closed with a sealing film 7 in this sealing station 26.
  • the containers 5 are then transported to a cutting station 8.
  • the containers 5 are cut with a rotating knife 9 parallel to the conveying direction of the surface element 4.
  • Cutting transversely to the conveying direction of the surface element 4 is carried out using a punching device 10.
  • Figure 2 shows a component of the punching device 10, namely a component of the upper punching tool 11. This extends over the entire width of the surface element 4, which is held in chains 12 on its longitudinal edges for its transport.
  • Containers 5 shown are to be separated from each other transversely to the conveying direction (arrow 6) of the surface element 4 using the punching device 10. Punching takes place along a line 13.
  • Figures 3 to 5 show the punching device 10 during a punching process.
  • a surface element 4 is punched, which is fed to the punching device 10 along the conveying direction marked by arrow 6.
  • This in Figures 2 to 5 Punching upper tool 11 shown is accommodated in a frame structure 14.
  • a punching lower tool 15 is also accommodated in the stand structure 14.
  • Figure 3 shows the bottom one, Figure 4 a medium and Figure 5 the top position of the lower punching tool 15.
  • a lifting drive is provided for this lower punching tool 15, which includes a crankshaft 16.
  • the crankshaft 16 is aligned transversely to the conveying direction (arrow 6) of the surface element 4.
  • the surface element 4 is passed between the lower punching tool 15 and the upper punching tool 11.
  • the crankshaft 16 has crank sections 17 to which connecting rod elements 18 are articulated.
  • Guides 19 are provided for the lower punching tool 15 and are held displaceably on the stand frame 14. Both guides 19 are connected to one another with a profile element 27.
  • the connecting rod elements 18 are articulated on the profile element 27, which is in Figures 3 to 5 also carries the punching lower tool 15.
  • FIG. 6 and 7 A different exemplary embodiment is in Figures 6 and 7 shown.
  • a middle crank section 17 is arranged offset from the other two crank sections 17 on the circumference of the crankshaft. This ensures that the middle connecting rod element 18 has a lead or on the outer sides compared to the other two connecting rod elements 18 has a wake.
  • the middle connecting rod element 18 can be guided over a dead center, as in Figure 6 shown.
  • crankshaft 16 has been rotated by the drive 20, approximately through 90° Figure 4 corresponding starting position.
  • the movement of the crankshaft 16 and the crank sections 17 has been converted into a movement of the connecting rods 18, with the result that the guides 19 with the profile element 27 have been moved on the stand frame 14 and the lower punching tool 15 is thereby guided in the direction of the upper punching tool 11.
  • the profile element 27 is not formed in one piece. It has a middle section 27 ⁇ which is in Figure 6 with the connecting rod element 18 was lifted a little way out of the longitudinal extent of the profile element 27. This raised position of the profile element 27 'is transferred to the lower tool 15.
  • the lower tool 15 is connected via pins 28 to a console 29 attached to the profile element 27.
  • the console 29 is also divided into sections Figure 6 middle section can be raised with the profile element section 27.
  • FIG 7 shows that the console 29 is placed closely against the lower tool 15.
  • Figure 7 shows the punching position, the connecting rod elements 18 have been raised accordingly with the crankshaft 16.
  • the console 29 also carries a stop plate 30 for the interchangeable positioning of the lower tool 15.
  • the lower punching tool also has a hardened top bar 21 on its top side.
  • This top bar 21 is made in one piece and continuous, but is also flexible.
  • the top bar 21 is applied to the top punching tool 11. By bending it can accommodate that the middle connecting rod element 18 is slightly higher than the outer connecting rod elements 18. In this way, the cutting process begins in the middle of the extension of the lower punching tool 15 and is then guided outwards. If the middle connecting rod element 18 is designed to trail the other two crank sections due to an offset of the crank section 17, then the middle connecting rod element 18 protrudes less far upwards than the outer connecting rod elements 18. In this case, the outer regions of the surface element 4 would be cut first become.

Abstract

Bei einer Vorrichtung zum Stanzen eines geförderten Flächenelementes, insbesondere zum Stanzen eines Bandes mit insbesondere durch Tiefziehen in diesem Band eingeformten Behältern, umfassend wenigstens ein Stanzoberwerkzeug und umfassend zumindest ein Stanzunterwerkzeug, die zum Ausführen der Stanzung gegeneinander bewegbar sind, ist vorgesehen, dass zumindest eine Bewegungseinrichtung für ein Stanzwerkzeug zumindest eine etwa quer zur Förderrichtung des Flächenelementes und quer zur Bewegungsrichtung des Stanzwerkzeuges liegende Kurbelwelle hat, an der Pleuelelemente angelenkt sind, deren von der Kurbelwelle abgewandte Enden an dem Stanzwerkzeug angelenkt sind.Eine Vorrichtung der eingangs genannten Gattung ermöglicht ein Stanzen mit hohen Kräften ohne das Auftreten von Biegungen in den beteiligten Werkzeugen.In a device for punching a conveyed surface element, in particular for punching a strip with containers formed in this strip, in particular by deep drawing, comprising at least one upper punching tool and comprising at least one lower punching tool, which can be moved relative to one another in order to carry out the punching, it is provided that at least one movement device for a punching tool has at least one crankshaft lying approximately transversely to the conveying direction of the surface element and transversely to the direction of movement of the punching tool, on which connecting rod elements are articulated, the ends of which facing away from the crankshaft are articulated on the punching tool. A device of the type mentioned at the beginning enables punching at high levels forces without the occurrence of bends in the tools involved.

Description

Die Erfindung betrifft eine Vorrichtung zum Stanzen eines geförderten Flächenelementes, insbesondere zum Stanzen eines Bandes mit insbesondere durch Tiefziehen in diesem Band eingeformten Behältern, umfassend wenigstens ein Stanzoberwerkzeug und umfassend zumindest ein Stanzunterwerkzeug, die zum Ausführen der Stanzung gegeneinander bewegbar sind.The invention relates to a device for punching a conveyed surface element, in particular for punching a strip with containers formed in this strip, in particular by deep drawing, comprising at least one upper punching tool and comprising at least one lower punching tool, which can be moved relative to one another to carry out the punching.

Innerhalb geförderter Flächenelemente, insbesondere innerhalb geförderter Bänder aus Folien, werden Behälter regelmäßig in Schalenform angeordnet. Das Anordnen der Schalen erfolgt regelmäßig durch Tiefziehen der Folie. Es sind dafür Behandlungsstraßen bekannt, in denen ein Band nach Tiefziehen der Behälter weitertransportiert wird. Die Behälter sind in bestimmten Bereichen des Bandes angeordnet, sie können nachfolgend befüllt und anschließend beispielsweise durch Aufsiegeln einer Folie verschlossen werden. Anschließend sind die in das Band eingeformten Behälter zu vereinzeln, dazu sind sie in Längsrichtung des Bandes und in Querrichtung zur Bandförderrichtung voneinander zu trennen. Dieses Trennen erfolgt mit gattungsgemäßen Vorrichtungen.Containers are regularly arranged in a bowl shape within conveyed surface elements, in particular within conveyed belts made of foil. The trays are arranged regularly by deep-drawing the film. Treatment lines are known for this, in which a strip is transported further after the container has been deep-drawn. The containers are arranged in certain areas of the belt, they can subsequently be filled and then closed, for example by sealing on a film. The containers formed into the belt must then be separated by separating them from each other in the longitudinal direction of the belt and in the transverse direction to the belt conveying direction. This separation is carried out using generic devices.

Ein Band, in das durch Tiefziehen Behälter eingeformt werden, hat eine Stärke von beispielsweise 1 Millimeter. Regelmäßig ist es aus einem Kunststoff ausgebildet. Ein derartiges Material zu stanzen, erfordert hohe Kräfte. So ist beispielsweise in der DE 10 2015 211 622 A1 ein Servoantrieb vorgeschlagen worden, der einen Servomotor mit Riemengetriebe und Spindel umfasst. Mit einem derartigen Servoantrieb wird ein Stanzunterwerkzeug angehoben, um es zum Ausführen der Stanzung gegen das Stanzoberwerkzeug zu führen.A band into which containers are formed by deep drawing has a thickness of, for example, 1 millimeter. It is usually made of plastic. Punching such a material requires high forces. For example, in the DE 10 2015 211 622 A1 a servo drive has been proposed, which includes a servo motor with a belt drive and spindle. With With such a servo drive, a lower punching tool is raised in order to guide it against the upper punching tool in order to carry out the punching.

Bei der Stanzung derartiger Bänder sind hohe Kräfte aufzubringen, es ist zudem zu verhindern, dass eine Durchbiegung der an der Stanzung beteiligten Werkzeuge eintritt.When punching such strips, high forces must be applied and it must also be prevented that the tools involved in the punching are bent.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zum Stanzen der eingangs genannten Gattung aufzuzeigen, mit dem ein Stanzen mit hohen Kräften ohne das Auftreten von Biegungen in den beteiligten Werkzeugen möglich ist.The invention is therefore based on the object of providing a device for punching of the type mentioned at the outset, with which punching with high forces is possible without the occurrence of bends in the tools involved.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, dass zumindest eine Bewegungseinrichtung für ein Stanzwerkzeug zumindest eine etwa quer zur Förderrichtung des Flächenelementes und quer zur Bewegungsrichtung des Stanzwerkzeuges liegende Kurbelwelle hat, an der Pleuelelemente angelenkt sind, deren von der Kurbelwelle abgewandte Enden an dem Stanzwerkzeug angelenkt sind.This object is achieved according to the invention in that at least one movement device for a punching tool has at least one crankshaft lying approximately transversely to the conveying direction of the surface element and transversely to the direction of movement of the punching tool, to which connecting rod elements are articulated, the ends of which facing away from the crankshaft are articulated to the punching tool.

Für den Antrieb zumindest eines Werkzeuges für die Stanzung des Flächenelementes wird nach der Erfindung eine Kurbelwelle vorgeschlagen. Eine Kurbelwelle kann zunächst einmal massiv ausgebildet werden, sodass sie hohe Kräfte aufnehmen kann. Sie kann mehrfach gelagert sein, um ein Durchbiegen zu verhindern. Nach der Erfindung ist die Kurbelwelle quer zur Förderrichtung des Flächenelementes und auch quer zur Bewegungsrichtung des Werkzeuges angeordnet. Daraus folgt, dass sich die Kurbelwelle beispielsweise über die gesamte Breite des geförderten Bandes erstrecken kann und somit ein an das Band anzunäherndes Stanzwerkzeug über die gesamte Breite des Bandes unterstützen kann. Das wirkt einer Durchbiegung des Werkzeuges aufgrund der hohen Kräfte entgegen.According to the invention, a crankshaft is proposed for driving at least one tool for punching the surface element. A crankshaft can initially be made solid so that it can absorb high forces. It can be supported several times to prevent it from bending. According to the invention, the crankshaft is arranged transversely to the conveying direction of the surface element and also transversely to the direction of movement of the tool. It follows that the crankshaft can extend, for example, over the entire width of the conveyed belt and can therefore support a punching tool that approaches the belt over the entire width of the belt. This counteracts any deflection of the tool due to the high forces.

Diese Unterstützung des Werkzeuges erfolgt durch die vorgesehenen Pleuelelemente. Es sind mehrere Pleuelelemente vorgesehen, sie sind über die Längserstreckung der Kurbelwelle verteilt. Die Pleuelelemente sind zum einen an der Kurbelwelle und zum anderen an dem Werkzeug angelenkt, sodass von der Kurbelwelle ausgehende Kräfte während einer Drehung der Kurbelwelle auf das Werkzeug übertragen werden können.This support of the tool is provided by the connecting rod elements provided. Several connecting rod elements are provided; they are distributed over the longitudinal extent of the crankshaft. The connecting rod elements are articulated on the one hand on the crankshaft and on the other hand on the tool, so that forces emanating from the crankshaft can be transmitted to the tool during rotation of the crankshaft.

Nach einer ersten Weiterbildung der Erfindung ist vorgesehen, dass das Stanzwerkzeug in einem Ständerwerk verschieblich geführt ist. Das Stanzwerkzeug ist in Schiebeführungen gehalten, die Bauteile des Ständerwerkes sind, sodass das Stanzwerkzeug in dem Ständerwerk beispielsweise nach oben und nach unten verschieblich geführt ist.According to a first development of the invention, it is provided that the punching tool is guided displaceably in a stand structure. The punching tool is held in sliding guides, which are components of the frame, so that the punching tool is guided in the frame, for example, so that it can move upwards and downwards.

Konkret kann vorgesehen sein, dass das Stanzunterwerkzeug an einer Führung im Ständerwerk aufgenommen ist und dass die Pleuelelemente an dieser Führung angelenkt sind. Für das Stanzunterwerkzeug ist nach dieser Weiterbildung eine Führung vorgesehen, die im Ständerwerk verschieblich aufgenommen ist. Das Stanzunterwerkzeug ist an dieser Führung angeordnet, es steht beispielsweise auf dieser Führung auf. Die Pleuelelemente sind an der Führung angelenkt und somit im Bereich des Stanzunterwerkzeuges angelenkt. Kräfte werden von den Pleuelelementen auf die Führung und somit auch auf das an der Führung aufgenommene Stanzunterwerkzeug gebracht.Specifically, it can be provided that the punching lower tool is accommodated on a guide in the stand structure and that the connecting rod elements are articulated on this guide. According to this further development, a guide is provided for the punching lower tool, which is displaceably accommodated in the frame. The punching lower tool is arranged on this guide; for example, it rests on this guide. The connecting rod elements are articulated on the guide and are therefore articulated in the area of the lower punching tool. Forces are transferred from the connecting rod elements to the guide and thus also to the punching lower tool held on the guide.

Die Kurbelwelle hat Kurbelabschnitte, vorzugsweise sind die Pleuelelemente an diesen Kurbelabschnitten angelenkt. Eine Drehung der Kurbelwelle kann aufgrund der Kurbelausbildungen und aufgrund der Anlenkung der Pleuel in eine translatorische Bewegung des Werkzeuges umgesetzt werden, da die Drehbewegung der Kurbel über die Pleuel auf das Werkzeug übertragen und dieses in seiner verschieblichen Führung im Ständerwerk translatorisch bewegt wird.The crankshaft has crank sections; the connecting rod elements are preferably articulated on these crank sections. A rotation of the crankshaft can be converted into a translational movement of the tool due to the crank design and the articulation of the connecting rods, since the rotational movement of the crank is transmitted to the tool via the connecting rods and this is moved translationally in its displaceable guide in the frame.

Nach einer nächsten Weiterbildung der Erfindung ist vorgesehen, dass einander benachbarte Kurbelabschnitte auf dem Umfang der Kurbelwelle einen Versatz zueinander aufweisen. Einander benachbarte Kurbelabschnitte können in einer Linie auf dem Umfang der Kurbelwelle angeordnet sein. Wenn, wie nach dieser Weiterbildung vorgeschlagen, einander benachbarte Kurbelabschnitte auf dem Umfang der Kurbelwelle einen Versatz zueinander haben, dann ist eine definierte Krafteintragung über die Pleuelelemente in das Werkzeug, beispielsweise das Unterwerkzeug, möglich. So kann vorgesehen sein, dass zunächst eine Kraft in ein Ende des Werkzeuges eingebracht wird und nachfolgend Kräfte erst in andere Abschnitte entlang der Längserstreckung des Werkzeuges in dieses eingebracht werden. Dadurch können Kraftspitzen auf bestimmte Bereiche des Werkzeuges gelegt werden, mit der Folge, dass es zu einem Kraftabrolleffekt und somit zu einem aktiven Schnitteffekt kommt.According to a next development of the invention, it is provided that adjacent crank sections have an offset from one another on the circumference of the crankshaft. Adjacent crank sections can be arranged in a line on the circumference of the crankshaft. If, as suggested by this development, adjacent crank sections on the circumference of the crankshaft are offset from one another, then a defined force input via the connecting rod elements into the tool, for example the lower tool, is possible. It can thus be provided that a force is first introduced into one end of the tool and then forces are only introduced into other sections along the longitudinal extent of the tool. This allows force peaks to be placed on certain areas of the tool, resulting in a force rolling effect and thus an active cutting effect.

Das Stanzwerkzeug kann im Stanzbereich eine Oberleiste aufweisen. Diese Oberleiste ist vorzugsweise einstückig ausgebildet, sie deckt den gesamten Stanzbereich ab. Dabei ist die Oberleiste vorzugsweise gehärtet und biegsam, so dass über den Stanzbereich kein Versatz auftritt.The punching tool can have a top bar in the punching area. This top bar is preferably designed in one piece and covers the entire punching area. The top bar is preferably hardened and flexible so that no offset occurs over the punching area.

Der Kurbelwelle ist nach einer Weiterbildung zumindest ein Antrieb zugeordnet, beispielsweise ein Elektromotor.According to a further development, at least one drive is assigned to the crankshaft, for example an electric motor.

Beide Stanzwerkzeuge sind vorzugsweise in dem Ständerwerk höhenveränderbar gehalten. Wenn die Kurbelwelle dem Stanzunterwerkzeug zugeordnet ist, dann kann gleichwohl auch das Stanzoberwerkzeug im Ständerwerk höhenveränderbar gehalten sein.Both punching tools are preferably held in the frame so that they can be adjusted in height. If the crankshaft is assigned to the lower punching tool, then the upper punching tool can also be held in the frame in a height-adjustable manner.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt. Es zeigen:

Figur 1:
eine schematische Seitenansicht einer Vorrichtung zum Fördern eines Flächenelementes und zum Einformen von Behältern, Versiegeln der Behälter und Abtrennen der Behälter voneinander;
Figur 2:
eine perspektivische Teilansicht der zu trennenden Behälter;
Figuren 3 bis 5:
perspektivische Ansichten der erfindungsgemäßen Vorrichtung zum Stanzen des Flächenelementes während eines Stanzvorgangs; und
Figuren 6 und 7:
perspektivische Ansichten der erfindungsgemäßen Vorrichtung in einer abweichenden Ausführungsform.
An embodiment of the invention is shown in the drawing. Show it:
Figure 1:
a schematic side view of a device for conveying a surface element and for forming containers, sealing the containers and separating the containers from one another;
Figure 2:
a partial perspective view of the containers to be separated;
Figures 3 to 5:
perspective views of the device according to the invention for punching the surface element during a punching process; and
Figures 6 and 7:
Perspective views of the device according to the invention in a different embodiment.

Die Vorrichtung in Figur 1 hat ein Maschinengestell 1, das mehrere Arbeitsstationen trägt. Mit 2 ist eine Tiefziehstation bezeichnet. In dieser werden in ein von einer Rolle 3 abgerolltes Flächenelement 4, insbesondere ein Folienband, Behälter 5 eingeformt. Das Flächenelement 4 wird nach dem Einformen der Behälter 5 entlang Pfeil 6 weitertransportiert, beispielsweise mit Gegenständen gefüllt und zu einer Siegelstation 6 geführt. Die Behälter 5 werden in dieser Siegelstation 26 mit einer Siegelfolie 7 verschlossen.The device in Figure 1 has a machine frame 1 that supports several work stations. 2 denotes a deep-drawing station. In this, containers 5 are formed into a surface element 4 unrolled from a roll 3, in particular a film strip. After the containers 5 have been formed, the surface element 4 is transported further along arrow 6, for example filled with objects and guided to a sealing station 6. The containers 5 are closed with a sealing film 7 in this sealing station 26.

Anschließend werden die Behälter 5 zu einer Schneidestation 8 transportiert. In dieser Schneidestation 8 werden die Behälter 5 mit einem rotierenden Messer 9 parallel zur Förderrichtung des Flächenelementes 4 geschnitten. Das Schneiden quer zur Förderrichtung des Flächenelementes 4 erfolgt mit einer Stanzvorrichtung 10.The containers 5 are then transported to a cutting station 8. In this cutting station 8, the containers 5 are cut with a rotating knife 9 parallel to the conveying direction of the surface element 4. Cutting transversely to the conveying direction of the surface element 4 is carried out using a punching device 10.

Figur 2 zeigt ein Bauteil der Stanzvorrichtung 10, nämlich ein Bauteil des Stanzoberwerkzeuges 11. Dieses erstreckt sich über die gesamte Breite des Flächenelementes 4, das zu seinem Transport an seinen Längsrändern in Ketten 12 gehalten ist. Die in Figur 2 gezeigten Behälter 5 sind quer zur Förderrichtung (Pfeil 6) des Flächenelementes 4 mit der Stanzvorrichtung 10 voneinander zu trennen. Das Stanzen erfolgt entlang einer Linie 13. Figure 2 shows a component of the punching device 10, namely a component of the upper punching tool 11. This extends over the entire width of the surface element 4, which is held in chains 12 on its longitudinal edges for its transport. In the Figure 2 Containers 5 shown are to be separated from each other transversely to the conveying direction (arrow 6) of the surface element 4 using the punching device 10. Punching takes place along a line 13.

Figuren 3 bis 5 zeigen die Stanzvorrichtung 10 während eines Stanzvorgangs. Gestanzt wird ein Flächenelement 4, das der Stanzvorrichtung 10 entlang der mit Pfeil 6 gekennzeichneten Förderrichtung zugeführt wird. Das in Figur 2 bis 5 gezeigte Stanzoberwerkzeug 11 ist in einem Ständerwerk 14 aufgenommen. Weiter in dem Ständerwerk 14 ist auch ein Stanzunterwerkzeug 15 aufgenommen. Figur 3 zeigt die unterste, Figur 4 eine mittlere und Figur 5 die oberste Stellung des Stanzunterwerkzeuges 15. Figures 3 to 5 show the punching device 10 during a punching process. A surface element 4 is punched, which is fed to the punching device 10 along the conveying direction marked by arrow 6. This in Figures 2 to 5 Punching upper tool 11 shown is accommodated in a frame structure 14. A punching lower tool 15 is also accommodated in the stand structure 14. Figure 3 shows the bottom one, Figure 4 a medium and Figure 5 the top position of the lower punching tool 15.

Für dieses Stanzunterwerkzeug 15 ist ein Hubantrieb vorgesehen, der eine Kurbelwelle 16 umfasst. Die Kurbelwelle 16 ist quer zur Förderrichtung (Pfeil 6) des Flächenelementes 4 ausgerichtet. Das Flächenelement 4 wird zwischen Stanzunterwerkzeug 15 und Stanzoberwerkzeug 11 hindurchgeführt. Die Kurbelwelle 16 hat Kurbelabschnitte 17, an denen Pleuelelemente 18 angelenkt sind. Für das Stanzunterwerkzeug 15 sind Führungen 19 vorgesehen, die an dem Ständerwerk 14 verschieblich gehalten sind. Beide Führungen 19 sind mit einem Profilelement 27 miteinander verbunden. Die Pleuelelemente 18 sind an dem Profilelement 27 angelenkt, das in Figur 3 bis 5 zudem das Stanzunterwerkzeug 15 trägt.A lifting drive is provided for this lower punching tool 15, which includes a crankshaft 16. The crankshaft 16 is aligned transversely to the conveying direction (arrow 6) of the surface element 4. The surface element 4 is passed between the lower punching tool 15 and the upper punching tool 11. The crankshaft 16 has crank sections 17 to which connecting rod elements 18 are articulated. Guides 19 are provided for the lower punching tool 15 and are held displaceably on the stand frame 14. Both guides 19 are connected to one another with a profile element 27. The connecting rod elements 18 are articulated on the profile element 27, which is in Figures 3 to 5 also carries the punching lower tool 15.

Ein abweichendes Ausführungsbeispiel ist in Figuren 6 und 7 gezeigt. Hier ist ein mittlerer Kurbelabschnitt 17 gegenüber den beiden anderen Kurbelabschnitten 17 auf dem Umfang der Kurbelwelle versetzt angeordnet. Dadurch wird erreicht, dass das mittlere Pleuelelement 18 gegenüber den beiden anderen Pleuelelementen 18 an den Außenseiten einen Vorlauf oder Nachlauf hat. Bei einem Vorlauf kann das mittlere Pleuelelement 18 über einen Totpunkt geführt werden, wie in Figur 6 gezeigt.A different exemplary embodiment is in Figures 6 and 7 shown. Here, a middle crank section 17 is arranged offset from the other two crank sections 17 on the circumference of the crankshaft. This ensures that the middle connecting rod element 18 has a lead or on the outer sides compared to the other two connecting rod elements 18 has a wake. During a forward run, the middle connecting rod element 18 can be guided over a dead center, as in Figure 6 shown.

In Figur 6 ist die Kurbelwelle 16 durch den Antrieb 20 gedreht worden, etwa um 90° einer Figur 4 entsprechenden Ausgangsstellung. Die Bewegung der Kurbelwelle 16 und der Kurbelabschnitte 17 ist in eine Bewegung der Pleuelstangen 18 umgesetzt worden mit der Folge, dass die Führungen 19 mit dem Profilelement 27 auf dem Ständerwerk 14 verschoben wurden und dadurch das Stanzunterwerkzeug 15 in Richtung Stanzoberwerkzeug 11 geführt ist.In Figure 6 the crankshaft 16 has been rotated by the drive 20, approximately through 90° Figure 4 corresponding starting position. The movement of the crankshaft 16 and the crank sections 17 has been converted into a movement of the connecting rods 18, with the result that the guides 19 with the profile element 27 have been moved on the stand frame 14 and the lower punching tool 15 is thereby guided in the direction of the upper punching tool 11.

Bei dem Ausführungsbeispiel in den Figuren 6 und 7 ist das Profilelement 27 nicht einstückig ausgebildet. Es hat einen mittleren Abschnitt 27`, der in Figur 6 mit dem Pleuelelement 18 ein Stück weit aus der Längserstreckung des Profilelementes 27 herausgehoben wurde. Diese angehobene Position des Profilelementes 27' wird auf das Unterwerkzeug 15 übertragen. Dazu ist das Unterwerkzeug 15 über Stifte 28 mit einer an das Profilelement 27 angesetzten Konsole 29 verbunden. Auch die Konsole 29 ist in Abschnitte unterteilt, der in Figur 6 mittlere Abschnitt kann mit dem Profilelementabschnitt 27 angehoben werden.In the exemplary embodiment in the Figures 6 and 7 the profile element 27 is not formed in one piece. It has a middle section 27` which is in Figure 6 with the connecting rod element 18 was lifted a little way out of the longitudinal extent of the profile element 27. This raised position of the profile element 27 'is transferred to the lower tool 15. For this purpose, the lower tool 15 is connected via pins 28 to a console 29 attached to the profile element 27. The console 29 is also divided into sections Figure 6 middle section can be raised with the profile element section 27.

Figur 7 zeigt dann, dass die Konsole 29 eng an das Unterwerkzeug 15 angelegt ist. Figur 7 zeigt die Stanzstellung, die Pleuelelemente 18 sind mit der Kurbelwelle 16 entsprechend angehoben worden. Die Konsole 29 trägt noch eine Anschlagsplatte 30 für das auswechselbare Ansetzen des Unterwerkzeuges 15. Figure 7 then shows that the console 29 is placed closely against the lower tool 15. Figure 7 shows the punching position, the connecting rod elements 18 have been raised accordingly with the crankshaft 16. The console 29 also carries a stop plate 30 for the interchangeable positioning of the lower tool 15.

Das Stanzunterwerkzeug weist an seiner Oberseite noch eine gehärtete Oberleiste 21 auf. Diese Oberleiste 21 ist einstückig und durchgängig, darüber hinaus aber biegsam ausgebildet.The lower punching tool also has a hardened top bar 21 on its top side. This top bar 21 is made in one piece and continuous, but is also flexible.

Die Oberleiste 21 ist an das Oberstanzwerkzeug 11 angelegt. Sie kann durch ein Durchbiegen aufnehmen, dass das mittlere Pleuelelement 18 etwas höher steht als die äußeren Pleuelelemente 18. Auf diese Weise beginnt in der Mitte der Erstreckung des Stanzunterwerkzeuges 15 der Schneidevorgang, er wird nachfolgend nach außen geführt. Wenn das mittlere Pleuelelement 18 durch einen Versatz des Kurbelabschnitts 17 nachlaufend zu den beiden anderen Kurbelabschnitten ausgebildet ist, dann steht das mittlere Pleuelelement 18 weniger weit nach oben vor als die äußeren Pleuelelemente 18. In diesem Falle würde in den äußeren Bereichen des Flächenelementes 4 zuerst geschnitten werden.The top bar 21 is applied to the top punching tool 11. By bending it can accommodate that the middle connecting rod element 18 is slightly higher than the outer connecting rod elements 18. In this way, the cutting process begins in the middle of the extension of the lower punching tool 15 and is then guided outwards. If the middle connecting rod element 18 is designed to trail the other two crank sections due to an offset of the crank section 17, then the middle connecting rod element 18 protrudes less far upwards than the outer connecting rod elements 18. In this case, the outer regions of the surface element 4 would be cut first become.

Claims (9)

Vorrichtung zum Stanzen eines geförderten Flächenelementes, insbesondere zum Stanzen eines Bandes mit insbesondere durch Tiefziehen in diesem Band eingeformten Behältern, umfassend wenigstens ein Stanzoberwerkzeug und umfassend zumindest ein Stanzunterwerkzeug, die zum Ausführen der Stanzung gegeneinander bewegbar sind,
dadurch gekennzeichnet,
dass zumindest eine Bewegungseinrichtung für ein Stanzwerkzeug zumindest eine etwa quer zur Förderrichtung des Flächenelementes (4) und quer zur Bewegungsrichtung des Stanzwerkzeuges liegende Kurbelwelle (16) hat, an der Pleuelelemente (18) angelenkt sind, deren von der Kurbelwelle (16) abgewandte Enden an dem Stanzwerkzeug angelenkt sind.Device for punching a conveyed surface element, in particular for punching a strip with containers formed in this strip, in particular by deep drawing, comprising at least one upper punching tool and comprising at least one lower punching tool, which can be moved relative to one another to carry out the punching,
characterized,
that at least one movement device for a punching tool has at least one crankshaft (16) lying approximately transversely to the conveying direction of the surface element (4) and transversely to the direction of movement of the punching tool, to which connecting rod elements (18) are articulated, the ends of which are facing away from the crankshaft (16). are articulated to the punching tool. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Stanzwerkzeug in einem Ständerwerk (14) verschieblich geführt ist.Device according to claim 1, characterized in that the punching tool is guided displaceably in a stand structure (14). Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass das Stanzunterwerkzeug (15) an einer Führung (19) im Ständerwerk (14) aufgenommen ist und dass die Pleuelelemente (18) an dieser Führung (19) angelenkt sind.Device according to claim 2, characterized in that the punching lower tool (15) is received on a guide (19) in the stand structure (14) and that the connecting rod elements (18) are articulated on this guide (19). Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Kurbelwelle (16) Kurbelabschnitte (17) hat und dass die Pleuelelemente (18) an diesen Kurbelabschnitten (17) angelenkt sind.Device according to one of the preceding claims, characterized in that the crankshaft (16) has crank sections (17) and that the connecting rod elements (18) are articulated on these crank sections (17). Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass einander benachbarte Kurbelabschnitte (17) auf dem Umfang der Kurbelwelle (16) einen Versatz zueinander aufweisen.Device according to claim 4, characterized in that adjacent crank sections (17) have an offset from one another on the circumference of the crankshaft (16). Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Kurbelwelle (16) zumindest ein Antrieb (20) zugeordnet ist.Device according to one of the preceding claims, characterized in that at least one drive (20) is assigned to the crankshaft (16). Vorrichtung nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass das Stanzoberwerkzeug (11) in dem Ständerwerk (14) höhenveränderbar gehalten ist.Device according to one of claims 2 to 6, characterized in that the upper punching tool (11) is held in the frame (14) so that it can be adjusted in height. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Stanzwerkzeug im Stanzbereich eine Oberleiste (21) aufweist.Device according to one of the preceding claims, characterized in that the punching tool has a top bar (21) in the punching area. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Oberleiste (21) gehärtet und biegsam ist.Device according to claim 8, characterized in that the top bar (21) is hardened and flexible.
EP23172010.3A 2022-05-12 2023-05-08 Device for punching a conveyed flat element Pending EP4275850A1 (en)

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CH401659A (en) * 1959-07-08 1965-10-31 Gillette France S A Rotating cutter
DE102015211622A1 (en) 2015-06-23 2016-12-29 Multivac Sepp Haggenmüller Se & Co. Kg Thermoforming packaging machine with foil punch
CN112518887A (en) * 2020-10-27 2021-03-19 陈由兵 Metalized film capacitor film medium fillet cutting device and method
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