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EP1375125A1 - Device for cutting handles for plastic bags - Google Patents

Device for cutting handles for plastic bags Download PDF

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Publication number
EP1375125A1
EP1375125A1 EP03008387A EP03008387A EP1375125A1 EP 1375125 A1 EP1375125 A1 EP 1375125A1 EP 03008387 A EP03008387 A EP 03008387A EP 03008387 A EP03008387 A EP 03008387A EP 1375125 A1 EP1375125 A1 EP 1375125A1
Authority
EP
European Patent Office
Prior art keywords
cutting
grip
cutting device
cutting knife
knife
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03008387A
Other languages
German (de)
French (fr)
Other versions
EP1375125B1 (en
Inventor
Heinrich Greve
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.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher 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.)
Filing date
Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP1375125A1 publication Critical patent/EP1375125A1/en
Application granted granted Critical
Publication of EP1375125B1 publication Critical patent/EP1375125B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D1/00—Multiple-step processes for making flat articles ; Making flat articles
    • B31D1/06—Multiple-step processes for making flat articles ; Making flat articles the articles being handles
    • B31D1/065—Multiple-step processes for making flat articles ; Making flat articles the articles being handles the articles being parcel carriers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/86—Forming integral handles or mounting separate handles
    • B31B70/864—Mounting separate handles on bags, sheets or webs
    • B31B70/87—Applying handles on one side of a moving longitudinally folded web, e.g. after cutting a tubular web longitudinally; Applying handles on both sides of a moving web and folding this web longitudinally afterwards

Definitions

  • the invention relates to a cutting device for cutting grip strips for plastic bags, where a grip strip of conveyor elements through a cutting zone is conveyable, a cutting knife is stored in the cutting zone is, and the cutting knife is so displaceable that it with its blade in the Cross section of the grip strip protrudes into the cutting zone, a corresponding one Method and a machine for the production of plastic bags.
  • the handle strips that can be produced with the device generally consist of flexible Plastic material and are in the production process of an endless roll peeled off, placed in a side fold of the plastic bag and with the material of the plastic bag welded.
  • the grip strips are found, for example, as Carrying handles for diaper packaging use.
  • the grip strip is preferred welded at the end to the material of the plastic bag, so that the Can grip grip strips.
  • the grip strips With higher weights the transported in the plastic bag Goods should be so wide that the grip strips on the outer Corners of the plastic bag can be attached to evenly that To be able to absorb carrying weight. So that the grip strips better match the shape of the Plastic bag is adjusted and an optimal flow of carrying capacities is achieved, the grip strips are cut lengthways at the ends, so that they stick to the Can spread the V-shaped plastic bag.
  • DE 43 07 842 A1 shows a special embodiment of such a diaper or Toiletry bag with cut-in grip strips.
  • the object is achieved by rotating the cutting knife in a cutting device is drivably mounted and during a cut by pressing the Motor is movable at a speed that is not equal to the conveying speed of the grip strip in the cutting zone.
  • the corresponding process sees the steps: conveying grip strips through a cutting zone and providing a rotatingly driven cutting knife in a starting position in the cutting zone, rotating movement of the Cutting knife from a start position to an end position for executing a Grip the cut in the handle, during this movement the cutting knife dips into the cross section of the grip strip, before, in the cutting zone of Grip strips and the cutting knife with different speeds be moved.
  • the rotating movement of the cutting knife according to the invention enables the difference in speed between that conveyed through the cutting zone Handle strips and the cutting knife to vary during the cutting process.
  • the cutting knife can be in or against the conveying direction of the handle strip to be cut.
  • the rotational movement changed the cutting angle of the cutting edge of the cutting knife relative to the surface of the grip strip.
  • this decreases Tendency to get caught in the material of the grip strip considerably. sliced the grip strips are practically always when selecting suitable speeds.
  • the rotational movement of the knife also causes it to dip into the cross section of the grip strip, is pulled through until it reaches its apex, and then out again the cross section of the material of the cutting strip is pulled out.
  • the knife in contrast, only ever held in one position and in the one to be cut Dipped film. This quickly makes the knife blunt and at the interface must be replaced early.
  • Another disadvantage is that a Pneumatic cylinders depending on their state of wear and the operating conditions works with different cycle times, which is why those produced with it Cuts are of different lengths.
  • reaction times of a rotary drive move in one narrower fluctuation range than pneumatic cylinders, which actually cutting lengths achieved more precisely controlled and the cutting process easier on different plastic bags can be adapted in production.
  • FIG. 1 shows how a grip strip 2 can be arranged in a plastic bag 4 can.
  • the grip strip 2 is inserted into a fold 6.
  • the material layers of the plastic bag 4 are joined together at the end sides by welds 8.
  • the end regions of the grip strip 2 protrude into the weld seam 8 into where they can be welded to the material of the plastic bag 4.
  • the grip strip 2 can be welded onto the 10 Material of the plastic bag 4 may be connected.
  • the Plastic bag 4 also has a tear-open perforation 12 around the in the plastic bag 4 goods can be easily removed.
  • the plastic bag 4 passes through the cutting device according to the invention during its manufacture in Direction of passage D.
  • the fold edge a of the fold 6 hidden Plastic bag 4, the folded edge b of the grip strip 2 and the outer edge d of the Handle strips 2 are shown in dashed lines because these are in plan view are not visible. However, the outer edge c of the plastic bag 4 is visible.
  • Figure 2 shows a cross section through the plastic bag 4 along the line A-B in Figure 1. It can be clearly seen how the grip strip 2 is folded in around the folded edge b the fold 6 comes to rest, the depth of which is from the outer edge c and the fold edge a is limited laterally. The grip strip 2 is chosen in its width so that its Outer edges d still come to lie within fold 6.
  • the fold 6 is shown in an open form with a view of the grip strip 2.
  • the grip strip 2 is with welding points 10 with the material of Plastic bag 4 connected.
  • the fold edges are a, b and the outer edges c, d clearly visible.
  • the grip strip 2 has a cut 14 at each end with a length L.
  • the double length L corresponds to the length of one Cut that with the cutting device according to the invention in the grip strip 2 is introduced. Since in the manufacture of the plastic bag 4 cutting the Handle strip 2 at a different location than the welding of the Handle strip 2 with the remaining material of the plastic bag 4, a cut with the Length (2 x L) during a conveying movement of the grip strip 2 by a Cutting zone C take place.
  • the cut handle strip 2 is then the Welding device fed so that both end sides of the grip strip 2 with a approximately the same distance L to the weld 8 welded into the plastic bag 4 can be.
  • a motor 20 drives a cutting plate 24 via an axis of rotation 22.
  • engine 20 axis of rotation 22 and cutting plate 24 are on a sliding carriage 26 constructed, which is arranged in the support frame 30 by means of guide rods 28 is. Laterally, the guide rods 28 are held in brackets 34 which Spars 32 are attached.
  • the grip strip 2 and the plastic bag 4 are so conveyed through the cutting zone C that it already has a fold 6 form.
  • the motor 20 can be electrical, hydraulic or otherwise be driven, electric motors are preferably used.
  • the Motor 20 can be operated at constant or variable speed.
  • FIG. 5 shows a plan view of the cutting zone C. It is easy to see how the Grip strip 2 is held by the guide plate 36 in a continuous position, in which he passes the cutting plate 24 at a defined distance. By a Rotary movement of the cutting plate 24 moves the cutting knife 40 on the Folded edge b of the grip strip 2 and pierces it when the rotational movement is continued. Upon further rotation of the cutting knife 40 dips this out of the cross section of the grip strip 2 again. About from Position in which the cutting knife 40 is from the cross section of the grip strip 2 is moved out, the grip strip 2 is no longer cut.
  • This sequence of movements is shown on a larger scale in FIG corresponds to circle II from FIG. 5.
  • the cutting knife 40 is in a starting position S shown in which it is the conveyed strand of the grip strip 2 in the Not yet cuts the folded edge. With a further rotation of the Cutting plate 24 pierces the tip of the cutting knife 40, the folded edge and reaches the intermediate position 1. Up to this intermediate position, the cut 14 in Grip strip 2 reaches about a length L. If the rotation continues of the cutting plate 24 about the axis of rotation 22, the cutting knife 40 gradually dips out of the folded edge b and finally reaches an end position E, in the gripped strip 2 is no longer cut.
  • One version has proven itself with regard to the conveying and rotating speeds, in which the film material of the grip strips 2 in the cutting zone C is approximately 3 are moved through the cutting zone C up to 6 times faster than the peripheral speed of the cutting knife 40.
  • the diameter of the cutting plate 24 can have a maximum angle of rotation of 60 °, in a preferred embodiment maximum 40 °, have been overcome, which corresponds to the distance covered of 55 mm.
  • the lower the active cutting angle the less deep the dive the cutting knife 40 in the fold 6.
  • the cutting knife 40 from Motor 20 can be moved back to the starting position S. This driving back to the start position can be done at a higher or lower speed than the actual cutting speed, which in turn depends on when the next cut must be made and how quickly the cutting plate 24 reaches the starting position can reach.
  • an angle of rotation or Rotation measuring sensor is used, which is positioned at a suitable location, for example on the motor 20, the axis of rotation 22, or the cutting plate 24 is with appropriate sensor elements. From the determined angle of rotation or rotation path and the time interval required for the corresponding rotation the speed of the cutting knife 40 can then be calculated. This speed value can be controlled by the open-loop / closed-loop control with the speed value be compared, for the promotion of the grip strip 2 in the cutting zone C is determined. The determined comparison value can be used for a Process monitoring and adjustment of the speeds of the drives involved.
  • the exact location of the individual elements during the cutting process can an enlarged view of the circle 1 from Figure 4, shown in Figure 8 is removed.
  • the baffle 38 is arranged so that it is spatially between the grip strip 2 and the outer material of the plastic bag 4, which forms the fold 6, lies.
  • the guide plate 38 has in the embodiment upper and lower element, which between the handle strips to be conveyed 2, the cutting knife 40 and the outer contour of the cutting plate 24.
  • FIG. 7 shows an example of how the cutting knife 40 can be attached to the cutting plate 24 in a simple manner with the aid of a clamping plate 42.
  • a plurality of cutting knives 40 can also be fastened on the cutting plate 24.
  • the cutting plate 24 itself can be provided with cutting edges.
  • the cutting plate 24 can then have an oval shape, be mounted eccentrically or have a link control in order to temporarily cut and not cut with the cutting edge. It is also possible to move the sliding carriage 26 laterally in order to bring the rotating cutting plate 24 into a cutting position or non-cutting position.

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  • Making Paper Articles (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Knives (AREA)

Abstract

The cutting device includes a cutting plate (24) which rotates to move the cutter (40) onto the fold edge (b) of the handle strip (2) and pierce it as the rotary motion continues. As the cutter rotates further, it come out of the cross section of the handle strip. From this point onwards, the handle strip is no longer being cut.

Description

Die Erfindung bezieht sich auf eine Schneidvorrichtung zum Schneiden von Griffstreifen für Kunststoffbeutel, bei der ein Griffstreifen von Förderelementen durch eine Schneidezone förderbar ist, ein Schneidmesser in der Schneidezone gelagert ist, und das Schneidmesser so verlagerbar ist, dass es mit seiner Klinge in den Querschnitt des Griffstreifens in der Schneidezone hineinragt, ein entsprechendes Verfahren sowie eine Maschine zur Herstellung von Kunststoffbeuteln.The invention relates to a cutting device for cutting grip strips for plastic bags, where a grip strip of conveyor elements through a cutting zone is conveyable, a cutting knife is stored in the cutting zone is, and the cutting knife is so displaceable that it with its blade in the Cross section of the grip strip protrudes into the cutting zone, a corresponding one Method and a machine for the production of plastic bags.

Die mit der Vorrichtung herstellbaren Griffstreifen bestehen in der Regel aus flexiblem Kunststoffmaterial und werden beim Produktionsvorgang von einer Endlosrolle abgezogen, in eine seitliche Falte des Kunststoffbeutels eingelegt und mit dem Material des Kunststoffbeutels verschweißt. Die Griffstreifen finden beispielsweise als Tragegriffe für Windelverpackungen Verwendung. Der Griffstreifen wird bevorzugt endseitig mit dem Material des Kunststoffbeutels verschweißt, damit man mittig den Griffstreifen fassen kann. Bei höheren Gewichten der im Kunststoffbeutel transportierten Ware sollte der Griffstreifen so breit sein, dass er jeweils an den äußeren Ecken des Kunststoffbeutels befestigt werden kann, um gleichmäßig das Tragegewicht aufnehmen zu können. Damit der Griffstreifen besser an die Form des Kunststoffbeutels angepasst ist und ein optimaler Fluss der Tragekräfte erreicht wird, werden die Griffstreifen endseitig längs eingeschnitten, damit sich diese beim Tragen des Kunststoffbeutels V-förmig aufspreizen können. Auch die DE 43 07 842 A1 zeigt eine besondere Ausführungsart eines solchen Windel- bzw. Hygieneartikelbeutels mit endseitig eingeschnittenen Griffstreifen.The handle strips that can be produced with the device generally consist of flexible Plastic material and are in the production process of an endless roll peeled off, placed in a side fold of the plastic bag and with the material of the plastic bag welded. The grip strips are found, for example, as Carrying handles for diaper packaging use. The grip strip is preferred welded at the end to the material of the plastic bag, so that the Can grip grip strips. With higher weights the transported in the plastic bag Goods should be so wide that the grip strips on the outer Corners of the plastic bag can be attached to evenly that To be able to absorb carrying weight. So that the grip strips better match the shape of the Plastic bag is adjusted and an optimal flow of carrying capacities is achieved, the grip strips are cut lengthways at the ends, so that they stick to the Can spread the V-shaped plastic bag. Also DE 43 07 842 A1 shows a special embodiment of such a diaper or Toiletry bag with cut-in grip strips.

Bisher werden die Einschnitte in den Griffstreifen hergestellt, indem durch Betätigung eines Pneumatikzylinders ein endseitig an diesem befestigtes Messer in einen vorbeigeförderten Griffstreifen einsticht und bei Erreichen der gewünschten Schnittlänge von dem Pneumatikzylinder wieder aus der Schnittposition hinausgezogen wird. Dabei kommt es jedoch immer wieder zu Funktionsstörungen, weil sich das Messer in dem Folienmaterial verhakt oder überhaupt kein Schnitt in den Griffstreifen eingebracht wird.So far, the incisions in the grip strips have been made by actuation of a pneumatic cylinder into a knife attached to the end of this Gripped strips of sticks and when the desired cutting length is reached pulled out of the cutting position by the pneumatic cylinder becomes. However, it always comes to malfunctions, because that Knife hooked into the film material or no cut at all in the grip strips is introduced.

Es ist Aufgabe der vorliegenden Erfindung, die genannten Funktionsstörungen des Standes der Technik zu minimieren.It is an object of the present invention to address the malfunctions mentioned To minimize the state of the art.

Die Aufgabe wird gelöst, indem in einer Schneidvorrichtung das Schneidmesser rotierend antreibbar gelagert ist und während eines Schnittes mittels Betätigung des Motors mit einer Geschwindigkeit bewegbar ist, die ungleich ist zur Fördergeschwindigkeit des Griffstreifens in der Schneidezone.The object is achieved by rotating the cutting knife in a cutting device is drivably mounted and during a cut by pressing the Motor is movable at a speed that is not equal to the conveying speed of the grip strip in the cutting zone.

Das entsprechende Verfahren sieht die Schritte: Durchfördern von Griffstreifen durch eine Schneidezone und Bereitstellen eines rotierend antreibbaren Schneidmessers in einer Startposition in der Schneidezone, rotierende Bewegung des Schneidmessers von einer Startposition in eine Endposition zur Ausführung eines Schnittes in den Griff streifen, wobei während dieser Bewegung das Schneidmesser in den Querschnitt des Griffstreifens eintaucht, vor, wobei in der Schneidzone der Griffstreifen und das Schneidmesser mit unterschiedlichen Geschwindigkeiten bewegt werden.The corresponding process sees the steps: conveying grip strips through a cutting zone and providing a rotatingly driven cutting knife in a starting position in the cutting zone, rotating movement of the Cutting knife from a start position to an end position for executing a Grip the cut in the handle, during this movement the cutting knife dips into the cross section of the grip strip, before, in the cutting zone of Grip strips and the cutting knife with different speeds be moved.

Die erfindungsgemäße rotierende Bewegung des Schneidmessers ermöglicht es, die Geschwindigkeitsdifferenz zwischen dem durch die Schneidezone geförderten Griffstreifen und dem Schneidmesser während des Schneidvorgangs zu variieren. Dabei kann sich das Schneidmesser in oder auch entgegen der Förderrichtung des zu schneidenden Griffstreifens bewegen. Infolge der Rotationsbewegung verändert sich zudem der Schnittwinkel der Schneide des Schneidmessers relativ zur Oberfläche des Griffstreifens. Infolge der Bewegung des Schneidmessers sinkt dessen Neigung, sich in dem Material des Griffstreifens zu verhaken, erheblich. Geschnitten werden die Griffstreifen bei Auswahl geeigneter Geschwindigkeiten praktisch immer. Durch die Kombination der variablen Geschwindigkeitsdifferenz und Schnittwinkel ist es möglich, die Schneidvorrichtung auf unterschiedliches Material der Griffstreifen und unterschiedliche Abmessungen, Schnittlängen und Fördergeschwindigkeiten einzustellen, ohne dadurch an Schnittqualität einzubüssen. Die Rotationsbewegung des Messers bewirkt zudem, dass es in den Querschnitt des Griffstreifens eintaucht, durchgezogen wird, bis es seinen Scheitel erreicht, und dann wieder aus dem Querschnitt des Materials des Schnittstreifens herausgezogen wird. Dadurch ergibt sich eine gleichmäßige Abnutzung des Messers über die gesamte schnittaktive Klingenlänge. Beim angeführten Stand der Technik wird das Messer demgegenüber immer nur in einer Position gehalten und in die zu durchtrennende Folie eingetaucht. Dadurch wird das Messer an der Schnittstelle schnell stumpf und muss frühzeitig ausgewechselt werden. Ein weiterer Nachteil besteht darin, dass ein Pneumatikzylinder abhängig von seinem Verschleißzustand und den Betriebsbedingungen mit unterschiedlichen Taktzeiten arbeitet, weshalb die mit ihm hergestellten Schnitte unterschiedlich lang ausfallen.The rotating movement of the cutting knife according to the invention enables the difference in speed between that conveyed through the cutting zone Handle strips and the cutting knife to vary during the cutting process. The cutting knife can be in or against the conveying direction of the handle strip to be cut. As a result of the rotational movement changed the cutting angle of the cutting edge of the cutting knife relative to the surface of the grip strip. As a result of the movement of the cutting knife, this decreases Tendency to get caught in the material of the grip strip considerably. sliced the grip strips are practically always when selecting suitable speeds. By combining the variable speed difference and cutting angle it is possible to use the cutting device on different material of the grip strips and different dimensions, cutting lengths and conveyor speeds adjust without sacrificing cut quality. The rotational movement of the knife also causes it to dip into the cross section of the grip strip, is pulled through until it reaches its apex, and then out again the cross section of the material of the cutting strip is pulled out. Thereby there is even wear of the knife over the entire cutting active Blade length. In the state of the art, the knife in contrast, only ever held in one position and in the one to be cut Dipped film. This quickly makes the knife blunt and at the interface must be replaced early. Another disadvantage is that a Pneumatic cylinders depending on their state of wear and the operating conditions works with different cycle times, which is why those produced with it Cuts are of different lengths.

Zudem bewegen sich die Reaktionszeiten eines Rotationsantriebes in einem schmaleren Schwankungsbereich als Pneumatikzylinder, wodurch die tatsächlich erzielten Schnittlängen genauer gesteuert und der Schnittprozess einfacher auf unterschiedliche Kunststoffbeutel in der Fertigung angepasst werden können.In addition, the reaction times of a rotary drive move in one narrower fluctuation range than pneumatic cylinders, which actually cutting lengths achieved more precisely controlled and the cutting process easier on different plastic bags can be adapted in production.

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Merkmalen der Unteransprüche. Die Erfindung wird anhand eines Ausführungsbeispieles erläutert. Further advantageous embodiments of the invention result from the Features of the subclaims. The invention is based on a Embodiment explained.

Es zeigen:

Fig. 1
eine Draufsicht auf einen Kunststoffbeutel mit eingelegten Griffstreifen,
Fig. 2
einen Querschnitt durch einen Kunststoffbeutel entlang der Linie A-B in Fig. 1,
Fig. 3
eine Detailansicht eines Griffstreifens in einer aufgeklappten Falte,
Fig. 4
eine Seitenansicht einer Schneidevorrichtung,
Fig. 5
eine Draufsicht auf eine Schneidezone der Schneidvorrichtung,
Fig. 6
einen Bewegungszyklus des Schneidmessers als vergrößerte Ansicht des Kreises ll in Fig. 5,
Fig. 7
einen Querschnitt durch einen Schneidteller und
Fig. 8
eine Detailansicht auf die Messerführung als vergrößerte Ansicht des Kreises l in Fig. 4.
Show it:
Fig. 1
a plan view of a plastic bag with inserted grip strips,
Fig. 2
2 shows a cross section through a plastic bag along the line AB in FIG. 1,
Fig. 3
a detailed view of a grip strip in an open fold,
Fig. 4
a side view of a cutting device,
Fig. 5
a plan view of a cutting zone of the cutting device,
Fig. 6
5 shows a movement cycle of the cutting knife as an enlarged view of the circle II in FIG. 5,
Fig. 7
a cross section through a cutting plate and
Fig. 8
4 shows a detailed view of the knife guide as an enlarged view of the circle 1 in FIG. 4.

Figur 1 zeigt, wie ein Griffstreifen 2 in einem Kunststoffbeutel 4 angeordnet sein kann. Im Ausführungsbeispiel ist der Griffstreifen 2 in eine Falte 6 eingelegt. Die Materiallagen des Kunststoffbeutels 4 sind an den Endseiten durch Schweißnähte 8 zusammengefügt. Die Endbereiche des Griffstreifens 2 ragen bis in die Schweißnaht 8 hinein, wo sie mit dem Material des Kunststoffbeutels 4 verschweißt sein können. Alternativ oder zusätzlich kann der Griffstreifen 2 über Anschweißpunkte 10 mit dem Material des Kunststoffbeutels 4 verbunden sein. Im Ausführungsbeispiel weist der Kunststoffbeutel 4 zusätzlich eine Aufreißperforation 12 auf, um die im Kunststoffbeutel 4 befindliche Ware leicht entnehmen zu können. Der Kunststoffbeutel 4 durchläuft die erfindungsgemäße Schneidvorrichtung während seiner Herstellung in Durchlaufrichtung D. Die in der Falte 6 verborgene Falzkante a des Kunststoffbeutels 4, die Falzkante b des Griffstreifens 2 und die Außenkante d des Griffstreifens 2 sind in gestrichelten Linien dargestellt, weil diese in der Draufsicht nicht sichtbar sind. Sichtbar ist jedoch die Außenkante c des Kunststoffbeutels 4.FIG. 1 shows how a grip strip 2 can be arranged in a plastic bag 4 can. In the exemplary embodiment, the grip strip 2 is inserted into a fold 6. The material layers of the plastic bag 4 are joined together at the end sides by welds 8. The end regions of the grip strip 2 protrude into the weld seam 8 into where they can be welded to the material of the plastic bag 4. As an alternative or in addition, the grip strip 2 can be welded onto the 10 Material of the plastic bag 4 may be connected. In the exemplary embodiment, the Plastic bag 4 also has a tear-open perforation 12 around the in the plastic bag 4 goods can be easily removed. The plastic bag 4 passes through the cutting device according to the invention during its manufacture in Direction of passage D. The fold edge a of the fold 6 hidden Plastic bag 4, the folded edge b of the grip strip 2 and the outer edge d of the Handle strips 2 are shown in dashed lines because these are in plan view are not visible. However, the outer edge c of the plastic bag 4 is visible.

Figur 2 zeigt einen Querschnitt durch den Kunststoffbeutel 4 entlang der Linie A-B in Figur 1. Es ist gut zu erkennen, wie der Griffstreifen 2 um die Falzkante b gefaltet in der Falte 6 zu liegen kommt, deren Tiefe von der Außenkante c und der Falzkante a seitlich begrenzt wird. Der Griffstreifen 2 ist in seiner Breite so gewählt, dass seine Außenkanten d noch innerhalb der Falte 6 zu liegen kommen.Figure 2 shows a cross section through the plastic bag 4 along the line A-B in Figure 1. It can be clearly seen how the grip strip 2 is folded in around the folded edge b the fold 6 comes to rest, the depth of which is from the outer edge c and the fold edge a is limited laterally. The grip strip 2 is chosen in its width so that its Outer edges d still come to lie within fold 6.

In Figur 3 ist die Falte 6 in aufgeklappter Form mit Blick auf den Griffstreifen 2 dargestellt. Der Griffstreifen 2 ist mit Anschweißpunkten 10 mit dem Material des Kunststoffbeutels 4 verbunden. Gleichfalls sind die Falzkanten a, b und die Außenkanten c, d gut sichtbar. Der Griffstreifen 2 weist endseitig jeweils einen Schnitt 14 mit einer Länge L auf. Die doppelte Länge L entspricht jeweils der Länge eines Schnittes, der mit der erfindungsgemäßen Schneidvorrichtung in den Griffstreifen 2 eingebracht wird. Da bei der Herstellung des Kunststoffbeutels 4 das Schneiden des Griffstreifens 2 an einer anderen Stelle erfolgt als das Zusammenschweißen des Griffstreifens 2 mit übrigen Material des Kunststoffbeutels 4, kann ein Schnitt mit der Länge (2 x L) während einer Förderbewegung des Griffstreifens 2 durch eine Schneidezone C erfolgen. Der fertiggeschnittene Griffstreifen 2 wird dann der Schweißvorrichtung so zugeführt, dass beide Endseiten des Griffstreifens 2 mit einem etwa gleichen Abstand L zur Schweißnaht 8 in den Kunststoffbeutel 4 eingeschweißt werden können.In Figure 3, the fold 6 is shown in an open form with a view of the grip strip 2. The grip strip 2 is with welding points 10 with the material of Plastic bag 4 connected. Likewise, the fold edges are a, b and the outer edges c, d clearly visible. The grip strip 2 has a cut 14 at each end with a length L. The double length L corresponds to the length of one Cut that with the cutting device according to the invention in the grip strip 2 is introduced. Since in the manufacture of the plastic bag 4 cutting the Handle strip 2 at a different location than the welding of the Handle strip 2 with the remaining material of the plastic bag 4, a cut with the Length (2 x L) during a conveying movement of the grip strip 2 by a Cutting zone C take place. The cut handle strip 2 is then the Welding device fed so that both end sides of the grip strip 2 with a approximately the same distance L to the weld 8 welded into the plastic bag 4 can be.

In Figur 4 ist eine erfindungsgemäße Schneidvorrichtung in der Seitenansicht dargestellt. Ein Motor 20 treibt über eine Drehachse 22 einen Schneidteller 24 an. Motor 20, Drehachse 22 und Schneidteller 24 sind auf einen Verschiebeschlitten 26 aufgebaut, der über Führungsstangen 28 lageveränderbar im Traggestell 30 angeordnet ist. Seitlich werden die Führungsstangen 28 in Konsolen 34 gehalten, die auf Holmen 32 befestigt sind. Der Griffstreifen 2 und der Kunststoffbeutel 4 werden so durch die Schneidezone C hindurchbefördert, dass sie bereits eine Falte 6 ausbilden. Der Motor 20 kann elektrisch, hydraulisch oder auf sonstige Art angetrieben sein, wobei elektrische Motoren bevorzugt Verwendung finden. Der Motor 20 kann mit konstanter oder variabler Drehzahl betreibbar sein.In Figure 4, a cutting device according to the invention is shown in side view. A motor 20 drives a cutting plate 24 via an axis of rotation 22. engine 20, axis of rotation 22 and cutting plate 24 are on a sliding carriage 26 constructed, which is arranged in the support frame 30 by means of guide rods 28 is. Laterally, the guide rods 28 are held in brackets 34 which Spars 32 are attached. The grip strip 2 and the plastic bag 4 are so conveyed through the cutting zone C that it already has a fold 6 form. The motor 20 can be electrical, hydraulic or otherwise be driven, electric motors are preferably used. The Motor 20 can be operated at constant or variable speed.

Figur 5 zeigt eine Draufsicht auf die Schneidezone C. Gut erkennbar ist, wie der Griffstreifen 2 von dem Führungsblech 36 in einer Durchlaufppsition gehalten wird, in der er den Schneidteller 24 in einem definierten Abstand passiert. Durch eine Drehbewegung des Schneidtellers 24 bewegt sich das Schneidmesser 40 auf die Falzkante b des Griffstreifens 2 zu und durchsticht diese, wenn die Rotationsbewegung weiter fortgeführt wird. Bei einer weiteren Rotation des Schneidmessers 40 taucht dieses aus dem Querschnitt des Griffstreifens 2 wieder heraus. Etwa ab der Position, in der das Schneidmesser 40 aus dem Querschnitt des Griffstreifens 2 hinausbewegt wird, wird der Griffstreifen 2 nicht mehr geschnitten.FIG. 5 shows a plan view of the cutting zone C. It is easy to see how the Grip strip 2 is held by the guide plate 36 in a continuous position, in which he passes the cutting plate 24 at a defined distance. By a Rotary movement of the cutting plate 24 moves the cutting knife 40 on the Folded edge b of the grip strip 2 and pierces it when the rotational movement is continued. Upon further rotation of the cutting knife 40 dips this out of the cross section of the grip strip 2 again. About from Position in which the cutting knife 40 is from the cross section of the grip strip 2 is moved out, the grip strip 2 is no longer cut.

Dieser Bewegungsablauf ist in einem größeren Maßstab in Figur 6 dargestellt, die dem Kreis ll aus der Figur 5 entspricht. Das Schneidmesser 40 ist in einer Startposition S dargestellt, in der es den durchgeförderten Strang des Griffstreifens 2 in der Falzkante noch nicht schneidet. Bei einer weiteren Drehbewegung des Schneidtellers 24 durchstößt die Spitze des Schneidmessers 40 die Falzkante und erreicht die Zwischenposition 1. Bis zu dieser Zwischenposition hat der Schnitt 14 im Griffstreifen 2 etwa eine Länge L erreicht. Bei Fortsetzung der Rotationsbewegung des Schneidtellers 24 um die Drehachse 22 taucht das Schneidmesser 40 allmählich wieder aus der Falzkante b heraus und erreicht schließlich eine Endposition E, in der der durchgeförderte Griffstreifen 2 nicht mehr eingeschnitten wird.This sequence of movements is shown on a larger scale in FIG corresponds to circle II from FIG. 5. The cutting knife 40 is in a starting position S shown in which it is the conveyed strand of the grip strip 2 in the Not yet cuts the folded edge. With a further rotation of the Cutting plate 24 pierces the tip of the cutting knife 40, the folded edge and reaches the intermediate position 1. Up to this intermediate position, the cut 14 in Grip strip 2 reaches about a length L. If the rotation continues of the cutting plate 24 about the axis of rotation 22, the cutting knife 40 gradually dips out of the folded edge b and finally reaches an end position E, in the gripped strip 2 is no longer cut.

Hinsichtlich der Förder- und Drehgeschwindigkeiten hat sich eine Ausführung bewährt, bei der das Folienmaterial der Griffstreifen 2 in der Schneidezone C etwa 3 bis 6 mal schneller durch die Schneidezone C bewegt werden als die Umfangsgeschwindigkeit des Schneidmessers 40. Erhält eine Steuerungs-/Regelungseinheit von den Förderelementen zur Förderung der Griffstreifen 2 von einem Sensor, der die Drehgeschwindigkeit der Förderelemente überwacht, eine Impulsanzahl von 255 übermittelt, wobei jeder Impuls einem Förderweg von 1 mm entspricht, und übermittelt ein Sensor, der die Drehgeschwindigkeit des Schneidtellers 24 überwacht, eine Impulszahl von 55 Impulsen, so errechnet sich aus diesen Zahlen eine gesamte Schnittlänge von 200 mm, wobei sich die Griffstreifen 2 in diesem Beispiel mit etwa fünffacher Geschwindigkeit der Geschwindigkeit des Schneidmesser 40 durch die Schneidezone C bewegen. Je nach Auswahl des Durchmessers des Schneidtellers 24 kann dabei ein Drehwinkel von maximal 60 °, in bevorzugter Ausgestaltung maximal 40 °, überwunden worden sein, der dem zurückgelegten Weg von 55 mm entspricht. Je geringer der schnittaktive Drehwinkel ausfällt, umso weniger tief taucht das Schneidmesser 40 in die Falte 6 ein. Danach kann das Schneidmesser 40 vom Motor 20 wieder in die Startposition S zurückgefahren werden. Dieses Zurückfahren in die Startposition kann mit einer höheren oder niedrigeren Geschwindigkeit erfolgen als die eigentliche Schnittgeschwindigkeit, was wiederum davon abhängt, wann der nächste Schnitt erfolgen muss und wie schnell der Schneidteller 24 die Startposition erreichen kann.One version has proven itself with regard to the conveying and rotating speeds, in which the film material of the grip strips 2 in the cutting zone C is approximately 3 are moved through the cutting zone C up to 6 times faster than the peripheral speed of the cutting knife 40. Receives a control unit of the conveyor elements to promote the grip strips 2 by a sensor that monitors the speed of rotation of the conveyor elements, a pulse count of 255 transmitted, with each pulse corresponding to a conveying path of 1 mm, and transmitted a sensor that monitors the rotational speed of the cutting plate 24, a Pulse number of 55 pulses, a total is calculated from these numbers Cutting length of 200 mm, with the grip strips 2 in this example approximately five times the speed of the cutting knife 40 through the Move cutting zone C. Depending on the selection of the diameter of the cutting plate 24 can have a maximum angle of rotation of 60 °, in a preferred embodiment maximum 40 °, have been overcome, which corresponds to the distance covered of 55 mm. The lower the active cutting angle, the less deep the dive the cutting knife 40 in the fold 6. Then the cutting knife 40 from Motor 20 can be moved back to the starting position S. This driving back to the start position can be done at a higher or lower speed than the actual cutting speed, which in turn depends on when the next cut must be made and how quickly the cutting plate 24 reaches the starting position can reach.

Zur Ermittlung der Bewegung des Schneidmessers 40 kann ein Drehwinkel- oder Drehwegmesssensor eingesetzt werden, der an geeigneter Stelle positioniert ist, beispielsweise am Motor 20, der Drehachse 22, oder der Schneidteller 24 ist mit entsprechenden Sensorelementen ausgestattet. Aus dem ermittelten Drehwinkel bzw. Drehweg und dem Zeitintervall, das für die entsprechende Drehung benötigt wurde, kann dann die Geschwindigkeit des Schneidmessers 40 errechnet werden. Dieser Geschwindigkeitswert kann von einer Steuerung/Regelung mit dem Geschwindigkeitswert verglichen werden, der für die Förderung des Griffstreifens 2 in der Schneidezone C ermittelt ist. Der ermittelte Vergleichswert ist nutzbar für eine Prozessüberwachung und Justierung der Geschwindigkeiten der beteiligten Antriebe. To determine the movement of the cutting knife 40, an angle of rotation or Rotation measuring sensor is used, which is positioned at a suitable location, for example on the motor 20, the axis of rotation 22, or the cutting plate 24 is with appropriate sensor elements. From the determined angle of rotation or rotation path and the time interval required for the corresponding rotation the speed of the cutting knife 40 can then be calculated. This speed value can be controlled by the open-loop / closed-loop control with the speed value be compared, for the promotion of the grip strip 2 in the cutting zone C is determined. The determined comparison value can be used for a Process monitoring and adjustment of the speeds of the drives involved.

Um eine Verletzung des übrigen Kunststoffbeutels 4 in der Schneidezone C durch das Schneidmesser 40 zu vermeiden, wird die gesamte Bewegungsbahn des Schneidmessers 40 im Bereich der Falte 6 durch ein Leitblech 38 abgedeckt, dessen vorderste Kante sich tiefer in die Falte 6 hinein erstreckt als die äußerste Spitze des Schneidmessers 40 in seinem äußersten Todpunkt reicht. Um leichter einen neuen Griffstreifen 2 in die Vorrichtung einlegen zu können, beispielsweise beim Einlegen einer neuen Materialrolle, bei anderen Abmessungen eines anderen zu fertigenden Kunststoffbeutels oder zu Wartungszwecken, ist es vorteilhaft, wenn das Führungsblech 36 und/oder das Leitblech 38 verschwenkbar oder verschiebbar angeordnet sind. Auch der Motor 20 sollte um die Schwenkachse 44 klappbar angebracht werden, um für Wartungsarbeiten leichter zugänglich zu sein.In order to injure the remaining plastic bag 4 in the cutting zone C. to avoid the cutting knife 40, the entire trajectory of the Cutting knife 40 in the area of the fold 6 covered by a baffle 38, the the foremost edge extends deeper into the fold 6 than the outermost tip of the cutting knife 40 at its extreme dead point. To make it easier to be able to insert new grip strips 2 into the device, for example when Insert a new roll of material, with different dimensions another manufacturing plastic bag or for maintenance purposes, it is advantageous if that Guide plate 36 and / or the baffle plate 38 arranged pivotally or displaceably are. The motor 20 should also be mounted such that it can be folded about the pivot axis 44 to be more easily accessible for maintenance work.

Die genaue Lage der einzelnen Elemente während des Schneidevorgangs kann einer vergrößerten Darstellung des Kreises l aus Figur 4, die in Figur 8 dargestellt ist, entnommen werden. Das Leitblech 38 ist so angeordnet, dass es räumlich zwischen dem Griffstreifen 2 und dem außenliegenden Material des Kunststoffbeutels 4, das die Falte 6 ausbildet, liegt. Das Leitblech 38 weist im Ausführungsbeispiel ein oberes und unteres Element auf, die zwischen sich den durchzufördernden Griffstreifen 2, das Schneidmesser 40 sowie die Außenkontur des Schneidtellers 24 aufnehmen.The exact location of the individual elements during the cutting process can an enlarged view of the circle 1 from Figure 4, shown in Figure 8 is removed. The baffle 38 is arranged so that it is spatially between the grip strip 2 and the outer material of the plastic bag 4, which forms the fold 6, lies. The guide plate 38 has in the embodiment upper and lower element, which between the handle strips to be conveyed 2, the cutting knife 40 and the outer contour of the cutting plate 24.

In Figur 7 ist ein Beispiel gezeigt, wie das Schneidmesser 40 mit Hilfe einer Klemmplatte 42 auf dem Schneidteller 24 auf einfache Art und Weise befestigt werden kann. Anstelle des im Ausführungsbeispiel gezeigten einzelnen Schneidmessers 40 können auch eine Mehrzahl von Schneidmessern 40 auf dem Schneidteller 24 befestigt sein. Anstelle von separaten Schneidmessern 40 als Schneidelementen kann der Schneidteller 24 selbst mit Schnittkanten versehen sein. Um über einen definierten Drehwinkel ein definiertes Schnittverhalten zu erzielen, kann der Schneidteller 24 dann eine ovale Form aufweisen, exzentrisch gelagert sein oder über eine Kulissensteuerung verfügen, um mit der Schnittkante zeitweise zu schneiden und nicht zu schneiden. Auch ist es möglich, den Verschiebeschlitten 26 seitlich zu verfahren, um den rotierenden Schneidteller 24 in eine Schnittposition bzw. Nicht-Schnittposition zu bringen. Bezugszeichenliste 1 2 Griffstreifen 3 4 Kunststoffbeutel 5 6 Falte 7 8 Schweißnaht 9 . 10 Anschweißpunkt 11 12 Aufreißperforation 13 14 Schnitt 15 16 17 18 19 20 Motor 21 22 Drehachse 23 24 Schneidteller 25 26 Verschiebeschlitten 27 28 Führungsstangen 29 30 31 32 Holm 33 34 Konsole 35 36 Führungsblech 37 38 Leitblech 39 40 Schneidmesser 41 42 Klemmplatte 43 44 Schwenkachse a Falzkante b Falzkante c Außenkante d Außenkante C Schneidezone D Durchlaufrichtung E Endposition L Länge S Startposition l Zwischenposition ll Kreis FIG. 7 shows an example of how the cutting knife 40 can be attached to the cutting plate 24 in a simple manner with the aid of a clamping plate 42. Instead of the individual cutting knife 40 shown in the exemplary embodiment, a plurality of cutting knives 40 can also be fastened on the cutting plate 24. Instead of separate cutting knives 40 as cutting elements, the cutting plate 24 itself can be provided with cutting edges. In order to achieve a defined cutting behavior via a defined angle of rotation, the cutting plate 24 can then have an oval shape, be mounted eccentrically or have a link control in order to temporarily cut and not cut with the cutting edge. It is also possible to move the sliding carriage 26 laterally in order to bring the rotating cutting plate 24 into a cutting position or non-cutting position. LIST OF REFERENCE NUMBERS 1 2 grip strips 3 4 Plastic bags 5 6 wrinkle 7 8th Weld 9. 10 Anschweißpunkt 11 12 open perforation 13 14 cut 15 16 17 18 19 20 engine 21 22 axis of rotation 23 24 cutting plate 25 26 displacement slide 27 28 guide rods 29 30 31 32 Holm 33 34 console 35 36 guide plate 37 38 baffle 39 40 cutting blade 41 42 clamp 43 44 swivel axis a folding edge b folding edge c outer edge d outer edge C cutting zone D Throughput direction e end position L length S starting position l intermediate position ll circle

Claims (13)

Schneidvorrichtung zum Schneiden von Griffstreifen (2) für Kunststoffbeutel (4), in der ein Griffstreifen (2) von Förderelementen durch eine Schneidezone (C) förderbar ist, ein Schneidmesser (40) in der Schneidezone (C) gelagert ist, und das Schneidmesser (40) so verlagerbar ist, dass es mit seiner Klinge in den Querschnitt des Griffstreifens (2) in der Schneidezone (C) hineinragt,
dadurch gekennzeichnet, dass
das Schneidmesser (40) rotierend antreibbar gelagert ist und während eines Schnittes mittels Betätigung des Motors (20) mit einer Geschwindigkeit bewegbar ist, die ungleich ist zur Fördergeschwindigkeit des Griffstreifens (2) in der Schneidezone (C).Cutting device for cutting grip strips (2) for plastic bags (4), in which a grip strip (2) of conveying elements can be conveyed through a cutting zone (C), a cutting knife (40) is stored in the cutting zone (C), and the cutting knife ( 40) can be displaced such that its blade projects into the cross section of the grip strip (2) in the cutting zone (C),
characterized in that
the cutting knife (40) is mounted to be driven in rotation and can be moved during a cut by actuating the motor (20) at a speed which is not equal to the conveying speed of the grip strip (2) in the cutting zone (C). Schneidvorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass
dass das Schneidmesser (40) und der Griffstreifen (2) in der Schneidezone (C) in die gleiche Richtung bewegbar sind, wobei der Griffstreifen (2) schneller bewegbar ist als das Schneidmesser (40).Cutting device according to claim 1,
characterized in that
that the cutting knife (40) and the grip strip (2) can be moved in the same direction in the cutting zone (C), the grip strip (2) being movable faster than the cutting knife (40). Schneidvorrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass
zumindest ein Schneidmesser (40) auf einem rotierend antreibbaren Schneidteller (24) befestigt ist.Cutting device according to claim 1 or 2,
characterized in that
at least one cutting knife (40) is fastened on a rotatingly drivable cutting plate (24). Schneidvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
ein Schneidteller (24) während einer Umdrehung mit unterschiedlichen Geschwindigkeiten antreibbar ist.Cutting device according to one of the preceding claims,
characterized in that
a cutting plate (24) can be driven at different speeds during one revolution. Schneidvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
das Schneidmesser (40) durch eine Klemmplatte (42) auf dem Schneidteller (24) gehalten ist.Cutting device according to one of the preceding claims,
characterized in that
the cutting knife (40) is held on the cutting plate (24) by a clamping plate (42). Schneidvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der Drehwinkel und/oder der Drehweg eines Schneidmessers (40) während einer Rotationsbewegung mittels eines Sensors messbar ist.Cutting device according to one of the preceding claims,
characterized in that
the angle of rotation and / or the path of rotation of a cutting knife (40) can be measured by means of a sensor during a rotational movement. Schneidvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der schnittaktive Drehwinkel des Schneidmessers (40) einen Wert von maximal 60° aufweist.Cutting device according to one of the preceding claims,
characterized in that
the active cutting angle of the cutting knife (40) has a maximum value of 60 °. Schneidvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
das Führungsblech (36) und/oder das Leitblech (38) verschwenkbar und/oder verschiebbar angeordnet sind.Cutting device according to one of the preceding claims,
characterized in that
the guide plate (36) and / or the guide plate (38) are arranged pivotably and / or displaceably. Schneidvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
der Motor (20) um eine Schwenkachse (44) verschwenkbar ist.Cutting device according to one of the preceding claims,
characterized in that
the motor (20) can be pivoted about a pivot axis (44). Schneidvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
einer Steuerung/Regelung Messwerte von Sensoren zuführbar sind, die die Förderstrecke, -geschwindigkeit und/oder Drehwinkel des Griffstreifens (2), des Schnittmessers (40) und/oder des Materials des Kunststoffbeutels (4) repräsentieren, und die Messwerte von der Steuerung/Regelung mittels einer Software in Stellbefehle zur Beeinflussung eines Antriebs in der Schneidevorrichtung auswertbar sind.Cutting device according to one of the preceding claims,
characterized in that
A control system can be supplied with measured values from sensors which represent the conveying distance, speed and / or angle of rotation of the grip strip (2), the cutting knife (40) and / or the material of the plastic bag (4), and the measured values from the control system / Control can be evaluated by means of software in control commands for influencing a drive in the cutting device. Schneidvorrichtung nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Schneidevorrichtung Bestandteil einer Maschine zur Herstellung von Kunststoffbeuteln (4) ist und der Schneidevorrichtung andere Bearbeitungsgänge der Maschine vor- und nachgelagert sind, und das Material des Kunststoffbeutels (4) und des Griffstreifens (2) in gleicher Förderrichtung und in benachbarter Lage zueinander durch die Schneidezone (C) bewegbar sind.Cutting device according to one of the preceding claims,
characterized in that
the cutting device is part of a machine for the production of plastic bags (4) and the cutting device other processing steps of the machine are upstream and downstream, and the material of the plastic bag (4) and the grip strip (2) in the same conveying direction and in an adjacent position to each other through the Cutting zone (C) are movable. Maschine zur Herstellung von Kunststoffbeuteln (4),
dadurch gekennzeichnet, dass
die Maschine eine Schneidvorrichtung nach einem der Ansprüche 1 bis 11 aufweist.Machine for the production of plastic bags (4),
characterized in that
the machine has a cutting device according to one of claims 1 to 11. Verfahren zum Schneiden von Griffstreifen (2) für Kunststoffbeutel (4) mit folgenden Schritten: Durchfördern von Griffstreifen (2) durch eine Schneidezone C und Bereitstellen eines rotierend antreibbaren Schneidmessers (40) in einer Startposition in der Schneidezone C, rotierende Bewegung des Schneidmessers (40) von einer Startposition (S) in eine Endposition (E) zur Ausführung eines Schnittes in den Griffstreifen (2), wobei während dieser Bewegung das Schneidmesser (40) in den Querschnitt des Griffstreifens (2) eintaucht, in der Schneidzone C werden der Griffstreifen (2) und das Schneidmesser (40) mit unterschiedlichen Geschwindigkeiten bewegt. Method for cutting grip strips (2) for plastic bags (4) with the following steps: Conveying grip strips (2) through a cutting zone C and providing a rotatingly driven cutting knife (40) in a starting position in the cutting zone C, rotating movement of the cutting knife (40) from a start position (S) to an end position (E) for making a cut in the grip strip (2), the cutting knife (40) being immersed in the cross section of the grip strip (2) during this movement, in the cutting zone C, the grip strip (2) and the cutting knife (40) are moved at different speeds.
EP03008387A 2002-06-27 2003-04-11 Device for cutting handles for plastic bags Expired - Lifetime EP1375125B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10228860 2002-06-27
DE10228860A DE10228860B3 (en) 2002-06-27 2002-06-27 Cutting device for cutting grip strips for plastic bags

Publications (2)

Publication Number Publication Date
EP1375125A1 true EP1375125A1 (en) 2004-01-02
EP1375125B1 EP1375125B1 (en) 2004-09-15

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ID=29716696

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EP03008387A Expired - Lifetime EP1375125B1 (en) 2002-06-27 2003-04-11 Device for cutting handles for plastic bags

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EP (1) EP1375125B1 (en)
AT (1) ATE276096T1 (en)
DE (2) DE10228860B3 (en)
ES (1) ES2227493T3 (en)
TR (1) TR200402711T4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1616807A1 (en) * 2004-07-17 2006-01-18 LEMO Maschinenbau GmbH Bag made of thermoplastic material and method of manufacturing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1176612A (en) * 1967-04-24 1970-01-07 Holweg Const Mec Improvements in the manufacture of Shopping or Carrier Bags of Plastics Materials
GB1273157A (en) * 1969-04-28 1972-05-03 British Visqueen Ltd Carrier bags
US4730943A (en) * 1986-11-07 1988-03-15 Johnson James R Plastic bag with carrying handle
DE4307842A1 (en) * 1993-03-12 1994-09-15 Kobusch Folien Gmbh Packaging bag with a handle made of plastic film for hygiene articles, especially diapers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8718129U1 (en) * 1987-06-12 1996-08-22 Gämmerler, Hagen, 82057 Icking Cutting knife

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1176612A (en) * 1967-04-24 1970-01-07 Holweg Const Mec Improvements in the manufacture of Shopping or Carrier Bags of Plastics Materials
GB1273157A (en) * 1969-04-28 1972-05-03 British Visqueen Ltd Carrier bags
US4730943A (en) * 1986-11-07 1988-03-15 Johnson James R Plastic bag with carrying handle
DE4307842A1 (en) * 1993-03-12 1994-09-15 Kobusch Folien Gmbh Packaging bag with a handle made of plastic film for hygiene articles, especially diapers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1616807A1 (en) * 2004-07-17 2006-01-18 LEMO Maschinenbau GmbH Bag made of thermoplastic material and method of manufacturing

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DE10228860B3 (en) 2004-02-05
ATE276096T1 (en) 2004-10-15
TR200402711T4 (en) 2004-11-22
EP1375125B1 (en) 2004-09-15
ES2227493T3 (en) 2005-04-01

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