EP0166299A2 - Device for cutting a tear strip - Google Patents

Device for cutting a tear strip Download PDF

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Publication number
EP0166299A2
EP0166299A2 EP85107185A EP85107185A EP0166299A2 EP 0166299 A2 EP0166299 A2 EP 0166299A2 EP 85107185 A EP85107185 A EP 85107185A EP 85107185 A EP85107185 A EP 85107185A EP 0166299 A2 EP0166299 A2 EP 0166299A2
Authority
EP
European Patent Office
Prior art keywords
strip
knife
packaging material
material web
movable
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
EP85107185A
Other languages
German (de)
French (fr)
Other versions
EP0166299B1 (en
EP0166299A3 (en
Inventor
Siegfried Knecht
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.)
Maschinenfabrik Alfred Schmermund GmbH and Co
Original Assignee
Maschinenfabrik Alfred Schmermund GmbH and Co
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 Maschinenfabrik Alfred Schmermund GmbH and Co filed Critical Maschinenfabrik Alfred Schmermund GmbH and Co
Publication of EP0166299A2 publication Critical patent/EP0166299A2/en
Publication of EP0166299A3 publication Critical patent/EP0166299A3/en
Application granted granted Critical
Publication of EP0166299B1 publication Critical patent/EP0166299B1/en
Expired 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
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • 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
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/812—Applying patches, strips or strings on sheets or webs
    • B31B70/8123—Applying strips
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8125—Applying strips or strings, e.g. tear strips or strings
    • B31B50/8126—Applying strips or strings, e.g. tear strips or strings parallel to the direction of movement of the webs or the blanks
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8125—Applying strips or strings, e.g. tear strips or strings
    • B31B50/8128—Applying strips or strings, e.g. tear strips or strings the webs or blanks remaining stationary during application of the strips or strings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2181—Active delivery means mounted on tool support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/4824—With means to cause progressive transverse cutting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8798—With simple oscillating motion only
    • Y10T83/8817—Axially entending cutting edge
    • Y10T83/8818—Axially progressing cut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9411—Cutting couple type
    • Y10T83/9447—Shear type

Definitions

  • the invention relates to a device for cutting a tear strip from a tape and for applying it to a web of packaging material according to the preamble of claim 1.
  • Such a device is known for example from DE-PS 15 86 o93, in which work is carried out with a fixed knife and a movable knife to which suction air can be applied in order to separate the tear strip from a tape.
  • the movable knife performs a linear movement with respect to the fixed knife, so that the tear strip is essentially knocked off the tape by the two knife edges.
  • such a separation is undesirable.
  • the object of the present invention is to provide a device of the type mentioned in the introduction in which a striking cut is avoided.
  • the device shown comprises a fixed knife 10 with a cutting edge 11 and a support and guide surface 12 for a belt 13, which is conveyed by means of a conveyor 14 intermittently with a width equal to the length of the desired tear strip 15.
  • the support and guide surface 12 is arranged horizontally.
  • the device comprises a movable knife 16 which can be pivoted back and forth about an axis 17 by a predetermined angle, which is preferably in the range from 45 to 50 °.
  • a pinion (not shown) on axis 17, which meshes with a gear wheel (also not shown).
  • the movable knife 16 has a cutting edge 18, wherein the two cutting edges 11, 18 of the blades 1 0, 16 are arranged mutually inclined, preferably by about 1 °, and tendons form of a hyperboloid of revolution. Adjacent to the cutting edge 18 of the knife 16 open at its lower edge suction air openings 19 which can be connected to a suction air source, not shown, so that the detached tear strip 15 can be held and transferred by the movable knife 16.
  • the pivot axis 17, which extends in the longitudinal direction of the movable knife 16, runs parallel to the cutting edge 18 and is connected at both ends to an angle lever 20 (only one shown), which has a cam roller 21 at its free end, which has a curve (not shown) in FIG Intervention stands.
  • This curve serves to vent the movable knife 16 during its return stroke into the starting position, which is shown in FIG. 1, from the fixed knife 10, which is why this curve exerts a slight stroke on the latter via the cam roller 21 during the return stroke of the movable knife 16 , so that a ventilation in the order of 1/10 mm or the like is effected.
  • the pivot axis 17 is spatially arranged in such a way that in the end position of the fixed knife 16, the latter is the separated one Tear strip 15 holds in the plane of a packaging material web 22, which is fed via a corresponding guide 23, 24 and guide or conveyor rollers 25, 26 to a schematically indicated welding device 27.
  • the packaging material web 22 is conveyed intermittently, the belt 13 and the packaging material web 22 being essentially orthogonal to one another; however, the conveying direction of the belt 13 is arranged slightly obliquely to the longitudinal direction of the packaging material web 22, which in turn is guided to rise slightly when the belt 13 is conveyed in the horizontal direction to the horizontal, so that the cutting edge 18 of the movable knife 16 and thus the detached tear strip 15 in the end position of the movable knife 16 for applying the tear strip 15 to the packaging material web 22 is in the plane of the packaging material web 22, as shown in FIG. 2.
  • the tear strip 15 held until then by the suction air openings 19 is released by interrupting the suction air supply to the suction air openings 19 and fed together with the packaging material web 22 to the welding device 27, where the two are connected to one another. Between the tear strips 15, which follow one another in the longitudinal direction on the packaging material web 22, there remains a small distance in which the packaging material web 22 is later cut into individual sections.
  • the conveyance of the belt 13 in the horizontal direction and the packaging material 22 in a plane which is inclined to the horizontal only in the longitudinal direction of the packaging material web 22 is preferred.
  • the formation of the knife 1 0, 16 ensures a progressive, pulling and with respect to the cutting edges 11, 18 contact-free cutting of the tear strip 1o from the belt 13 and a flashing off the cutting edges 11, 18 when pivoting the pivotable about its pivot axis 16, diameter 16, wherein at Use of a gear drive for the movable knife 16 to select the stroke during ventilation so that the drive gear still remains in engagement with the pinion.
  • the tape 13 is fed by the desired width of the tear strip 15, after which the tear strip 15 progresses by rotation of the movable knife 16 separated from the belt 13 and held by suction air on the movable knife 16, so that the Tear strips 15 can be transferred into the plane of the packaging material web 22.

Abstract

Die Erfindung betrifft eine Vorrichtung zum Abschneiden eines Aufreißstreifens (15) von einem Band (13) mit einer Breite gleich der Länge des Streifens (15) und zum Aufbringen auf eine intermittierend geförderte, im wesentlichen quer zum Band (13) befindliche Verpackungsmaterialbahn (22) mit zwei gegeneinander beweglichen Messern (10, 16), von denen eines feststeht und zur Führung des intermittierend entsprechend der gewünschten Streifenbreite zugeführten Bandes (13) dient, wobei das bewegliche Messer (16) zum Transport des abgeschnittenen Streifens (15) mit Saugluft beaufschlagbar ist. Zur Erzielung eines ziehenden Abschneidens sind die Schneidkanten der Messer (10, 16) Sehnen eines Rotationshyperboloids und gegeneinander geneigt, und das bewegliche Messer (16) ist um seine Längsachse (17) um einen vorbestimmten Winkel hin- und zurückschwenkbar, wobei seine Längsachse (17) derart angeordnet ist, daß sich das bewegliche Messer (16) in seiner Endstellung in der Ebene der Verpackungsmaterialbahn (22) befindet, und eine Einrichtung (20, 21) zum Ablüften des beweglichen (16) vom feststehenden Messer (10) beim Zurückschwenken vorgesehen ist.The invention relates to a device for cutting a tear strip (15) from a strip (13) with a width equal to the length of the strip (15) and for applying it to an intermittently conveyed packaging material web (22) which is located essentially transversely to the strip (13). with two mutually movable knives (10, 16), one of which is fixed and is used to guide the strip (13) fed intermittently according to the desired strip width, the movable knife (16) for transporting the cut strip (15) can be acted upon by suction air . To achieve pulling cutting, the cutting edges of the knives (10, 16) tendons of a rotational hyperboloid and inclined towards each other, and the movable knife (16) can be pivoted back and forth about its longitudinal axis (17) by a predetermined angle, its longitudinal axis (17 ) is arranged such that the movable knife (16) is in its end position in the plane of the packaging material web (22), and a device (20, 21) for venting the movable (16) from the fixed knife (10) when pivoting back is.

Description

Die Erfindung betrifft eine Vorrichtung zum Abschneiden eines Aufreißstreifens von einem Band und zum Aufbringen auf eine Verpackungsmaterialbahn nach dem Oberbegriff des Anspruchs 1.The invention relates to a device for cutting a tear strip from a tape and for applying it to a web of packaging material according to the preamble of claim 1.

Eine derartige Vorrichtung ist beispielsweise aus der DE-PS 15 86 o93 bekannt, bei der mit einem feststehenden Messer und einem beweglichen mit Saugluft beaufschlagbaren Messer gearbeitet wird, um den Aufreißstreifen von einem Band abzutrennen. Das bewegliche Messer führt hierbei gegenüber dem feststehenden Messer eine Linearbewegung durch, so daß der Aufreißstreifen von dem Band durch die beiden Messerkanten im wesentlichen abgeschlagen wird. Ein derartiges Abtrennen ist jedoch unerwünscht.Such a device is known for example from DE-PS 15 86 o93, in which work is carried out with a fixed knife and a movable knife to which suction air can be applied in order to separate the tear strip from a tape. The movable knife performs a linear movement with respect to the fixed knife, so that the tear strip is essentially knocked off the tape by the two knife edges. However, such a separation is undesirable.

Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung der eingangs genannten Art zu schaffen, bei der ein schlagender Schnitt vermieden wird.The object of the present invention is to provide a device of the type mentioned in the introduction in which a striking cut is avoided.

Diese Aufgabe wird entsprechend dem kennzeichnenden Teil des Anspruchs 1 gelöst.This object is achieved in accordance with the characterizing part of claim 1.

Hierdurch ergibt sich ein fortschreitender, ziehender und berührungloser Schnitt, wobei das schwenkbare Messer derart verschwenkt wird, daß es in seiner Endstellung unmittelbar oberhalb der Verpackungsmaterialbahn angeordnet ist und den abgetrennten Abreißstreifen somit auf die Verpackungsmaterialbahn auflegen kann, so daß die Verpackungsmaterialbahn den aufgelegten Aufreißstreifen zu einer Schweißvorrichtung weitertransportiert, wo beide miteinander verbunden werden.This results in a progressive, pulling and non-contact cut, the pivoting knife being pivoted such that it is arranged in its end position directly above the packaging material web and can thus place the detached tear-off strip on the packaging material web, so that the packaging material web forms the tear-open strip in one Welding device transported where both are connected.

Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further embodiments of the invention can be found in the following description and the subclaims.

Die Erfindung wird nachstehend anhand des in den beigefügten Abbildungen dargestellten Ausführungsbeispiels näher erläutert.

  • Fig. 1 zeigt schematisch und perspektivisch eine Vorrichtung zum Abschneiden und Aufbringen eines Aufreißstreifens.
  • Fig. 2 zeigt ausschnittsweise eine Seitenansicht der Vorrichtung von Fig. 1.
The invention is explained below with reference to the embodiment shown in the accompanying figures.
  • Fig. 1 shows schematically and in perspective a device for cutting and applying a tear strip.
  • FIG. 2 shows a partial side view of the device from FIG. 1.

Die dargestellte Vorrichtung umfaßt ein feststehendes Messer 1o mit einer Schneidkante 11 und einer Auflage- und Führungsfläche 12 für ein Band 13, das mittels einer Fördereinrichtung 14 intermittierend mit einer Breite gleich der Länge des gewünschten Aufreißstreifens 15 gefördert wird. Die Auflage- und Führungsfläche 12 ist waagerecht angeordnet.The device shown comprises a fixed knife 10 with a cutting edge 11 and a support and guide surface 12 for a belt 13, which is conveyed by means of a conveyor 14 intermittently with a width equal to the length of the desired tear strip 15. The support and guide surface 12 is arranged horizontally.

Ferner umfaßt die Vorrichtung ein bewegliches Messer 16, das um eine Achse 17 um einen vorbestimmmten Winkel, der vorzugsweise im Bereich von 45 bis 50° liegt, hin- und zurückschwenkbar ist. Zu diesem Zweck befindet sich beispielsweise auf der Achse 17 ein nicht dargestelltes Ritzel, das mit einem ebenfalls nicht dargestellten Zahnrad in Eingriff steht. Das bewegliche Messer 16 besitzt eine Schneidkante 18, wobei die beiden Schneidkanten 11, 18 der Messer 10, 16 gegeneinander geneigt angeordnet sind, vorzugsweise um etwa 1°, sowie Sehnen eines Rotationshyperboloids bilden. Benachbart zur Schneidkante 18 des Messers 16 münden an dessen Unterkante Saugluftöffnungen 19, die an eine nicht dargestellte Saugluftquelle anschließbar sind, so daß der abgetrennte Aufreißstreifen 15 von dem beweglichen Messer 16 festgehalten und überführt werden kann.Furthermore, the device comprises a movable knife 16 which can be pivoted back and forth about an axis 17 by a predetermined angle, which is preferably in the range from 45 to 50 °. For this purpose, there is, for example, a pinion (not shown) on axis 17, which meshes with a gear wheel (also not shown). The movable knife 16 has a cutting edge 18, wherein the two cutting edges 11, 18 of the blades 1 0, 16 are arranged mutually inclined, preferably by about 1 °, and tendons form of a hyperboloid of revolution. Adjacent to the cutting edge 18 of the knife 16 open at its lower edge suction air openings 19 which can be connected to a suction air source, not shown, so that the detached tear strip 15 can be held and transferred by the movable knife 16.

Die sich in Längsrichtung des beweglichen Messers 16 erstreckende Schwenkachse 17 verläuft parallel zur Schneidkante 18 und ist an beiden Enden jeweils mit einem Winkelhebel 2o verbunden (nur einer dargestellt), der an seinem freien Ende eine Kurvenrolle 21 aufweist, die mit einer nicht dargestellten Kurve in Eingriff steht. Diese Kurve dient dazu, das bewegliche Messer 16 bei dessen Rückhub in die Ausgangsstellung, die in Fig. 1 dargestellt, von dem feststehenden Messer 1o abzulüften, weshalb diese Kurve über die Kurvenrolle 21 während des Rückhubs des beweglichen Messers 16 einen geringfügigen Hub auf letzteres ausübt, so daß ein Ablüften in der Größenordnung von 1/1o mm oder dergleichen bewirkt wird.The pivot axis 17, which extends in the longitudinal direction of the movable knife 16, runs parallel to the cutting edge 18 and is connected at both ends to an angle lever 20 (only one shown), which has a cam roller 21 at its free end, which has a curve (not shown) in FIG Intervention stands. This curve serves to vent the movable knife 16 during its return stroke into the starting position, which is shown in FIG. 1, from the fixed knife 10, which is why this curve exerts a slight stroke on the latter via the cam roller 21 during the return stroke of the movable knife 16 , so that a ventilation in the order of 1/10 mm or the like is effected.

Die Schwenkachse 17 ist räumlich derart angeordnet, daß in der Endstellung des feststehenden Messers 16 dieses den abgetrennten Aufreißstreifen 15 in der Ebene einer Verpackungsmaterialbahn 22 hält, die über entsprechende Führungen 23, 24 und Führungs- bzw. Förderrollen 25, 26 einer schematisch angedeuteten Schweißvorrichtung 27 zugeführt wird. Die Verpackungsmaterialbahn 22 wird intermittierend gefördert, wobei das Band 13 und die Verpackungsmaterialbahn 22 im wesentlichen orthogonal zueinander verlaufen; jedoch ist die Förderrichtung des Bandes 13 leicht schräg zur Längsrichtung der Verpackungsmaterialbahn 22 angeordnet, die ihrerseits bei Förderung des Bandes 13 in waagerechter Richtung zur Horizontalen leicht ansteigend geführt wird, damit die Schneidkante 18 des beweglichen Messers 16 und damit der abgetrennte Aufreißstreifen 15 in der Endstellung des beweglichen Messers 16 zum Aufbringen des Aufreißstreifens 15 auf die Verpackungsmaterialbahn 22 sich in der Ebene der Verpackungsmaterialbahn 22 befindet, wie in Fig. 2 dargestellt ist. Der bis dahin durch die Saugluftöffnungen 19 gehaltene Aufreißstreifen 15 wird durch Unterbrechen der Saugluftzufuhr zu den Saugluftöffnungen 19 freigegeben und zusammen mit der Verpackungsmaterialbahn 22 der Schweißvorrichtung 27 zugeführt, wo beide miteinander verbunden werden. Zwischen in Längsrichtung auf der Verpackungsmaterialbahn 22 aufeinanderfolgenden Aufreißstreifen 15 verbleibt ein kleiner Abstand, in dem die Verpackungsmaterialbahn 22 später in einzelne Abschnitte zerschnitten wird. Die Förderung des Bandes 13 in Horizontalrichtung sowie der Verpackungsmaterial 22 in einer Ebene, die nur in Längsrichtung der Verpackungsmaterialbahn 22 zur Horizontalen ansteigend geneigt ist, wird bevorzugt.The pivot axis 17 is spatially arranged in such a way that in the end position of the fixed knife 16, the latter is the separated one Tear strip 15 holds in the plane of a packaging material web 22, which is fed via a corresponding guide 23, 24 and guide or conveyor rollers 25, 26 to a schematically indicated welding device 27. The packaging material web 22 is conveyed intermittently, the belt 13 and the packaging material web 22 being essentially orthogonal to one another; however, the conveying direction of the belt 13 is arranged slightly obliquely to the longitudinal direction of the packaging material web 22, which in turn is guided to rise slightly when the belt 13 is conveyed in the horizontal direction to the horizontal, so that the cutting edge 18 of the movable knife 16 and thus the detached tear strip 15 in the end position of the movable knife 16 for applying the tear strip 15 to the packaging material web 22 is in the plane of the packaging material web 22, as shown in FIG. 2. The tear strip 15 held until then by the suction air openings 19 is released by interrupting the suction air supply to the suction air openings 19 and fed together with the packaging material web 22 to the welding device 27, where the two are connected to one another. Between the tear strips 15, which follow one another in the longitudinal direction on the packaging material web 22, there remains a small distance in which the packaging material web 22 is later cut into individual sections. The conveyance of the belt 13 in the horizontal direction and the packaging material 22 in a plane which is inclined to the horizontal only in the longitudinal direction of the packaging material web 22 is preferred.

Die Ausbildung der Messer 10, 16 gewährleistet ein fortschreitendes, ziehendes und bezüglich der Schneidkanten 11, 18 berührungsloses Abschneiden des Aufreißstreifens 1o von dem Band 13 sowie ein Ablüften der Schneidkanten 11, 18 beim Zurückschwenken des um seine Schwenkachse 16 verschwenkbaren Messers 16, wobei bei Verwendung eines Zahnradantriebes für das bewegliche Messer 16 der Hub beim Ablüften so zu wählen ist, daß das Antriebszahnrad mit dem Ritzel immer noch in Eingriff bleibt. In der Ausgangsstellung des beweglichen Messers 16, in der sich seine Schneidkante 18 oberhalb der Schneidkante 11 des feststehenden Messers 1o befindet, findet der Vorschub des Bandes 13 um die gewünschte Breite des Aufreißstreifens 15 statt, wonach durch Drehung des beweglichen Messers 16 der Aufreißstreifen 15 fortschreitend von dem Band 13 abgetrennt und durch Saugluft an dem beweglichen Messer 16 festgehalten wird, so daß der Aufreißstreifen 15 in die Ebene der Verpackungsmaterlalbahn 22 überführt werden kann.The formation of the knife 1 0, 16 ensures a progressive, pulling and with respect to the cutting edges 11, 18 contact-free cutting of the tear strip 1o from the belt 13 and a flashing off the cutting edges 11, 18 when pivoting the pivotable about its pivot axis 16, diameter 16, wherein at Use of a gear drive for the movable knife 16 to select the stroke during ventilation so that the drive gear still remains in engagement with the pinion. In the starting position of the movable knife 16, in which its cutting edge 18 is located above the cutting edge 11 of the fixed knife 10, the tape 13 is fed by the desired width of the tear strip 15, after which the tear strip 15 progresses by rotation of the movable knife 16 separated from the belt 13 and held by suction air on the movable knife 16, so that the Tear strips 15 can be transferred into the plane of the packaging material web 22.

Claims (3)

1. Vorrichtung zum Abschneiden eines Aufreißstreifens (15) von einem Band (13) mit einer Breite gleich der Länge des Streifens (15) und zum Aufbringen auf eine intermittierend geförderte, im wesentlichen quer zum Band (13) befindliche Verpackungsmaterialbahn (22) mit zwei gegeneinander beweglichen Messern (10, 16), von denen eines feststeht und zur Führung des intermittierend entsprechend der gewünschten Streifenbreite zugeführten Bandes (13) dient, wobei das bewegliche Messer (16) zum Transport des abgeschnittenen Streifens (15) mit Saugluft beaufschlagbar ist, dadurch gekennzeichnet, daß die Schneidkanten (11, 18) der Messer (10, 16) Sehnen eines Rotationshyperboloids bilden und gegeneinander, vorzugsweise um etwa 1°, geneigt sind und das bewegliche Messer (16) um eine Längsachse (17) um einen vorbestimmten Winkel, vorzugsweise 45 bis 50°, hin- und zurückschwenkbar ist, wobei seine Längsachse (17) derart angeordnet ist, daß sich das bewegliche Messer (16) in seiner Endstellung in der Ebene der Verpackungsmaterialbahn (22) befindet, und eine Einrichtung (2o, 21) zum Ablüften des beweglichen Messers (16) vom feststehenden Messer (10) beim Zurückschwenken vorgesehen ist.1. Device for cutting a tear strip (15) from a band (13) with a width equal to the length of the strip (15) and for application to an intermittently conveyed, essentially transverse to the band (13) packaging material web (22) with two mutually movable blades (1 0, 16), one of which is fixed one, and for guiding the intermittently according to the desired strip width supplied strip (13) is used wherein the movable knife (16) is acted upon by suction air for transporting the cut strip (15), characterized in that the cutting edges (11, 18) of the knife (1 0, 16) tendons form of a hyperboloid of revolution and are against each other, preferably by about 1 °, inclined and the movable blade (16) about a longitudinal axis (17) predetermined by a Angle, preferably 45 to 50 °, can be pivoted back and forth, its longitudinal axis (17) being arranged such that the movable knife (16) is in its end position located in the plane of the packaging material web (22), and a device (2o, 21) for venting the movable knife (16) from the fixed knife (1 0 ) is provided when pivoting back. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Förderebene für das Band (13) horizontal und die Förderebene für die Verpackungsmaterialbahn (22) in Längsrichtung der Verpackungsmaterialbahn (22) zur Horizontalen leicht ansteigend geneigt ist.2. Device according to claim 1, characterized in that the conveying plane for the belt (13) is horizontal and the conveying plane for the packaging material web (22) in the longitudinal direction of the packaging material web (22) is inclined slightly rising to the horizontal. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Schwenkachse (17) des beweglichen Messers (16) über Kniehebel (2o) mit einer Kurve in Eingriff steht, die das bewegliche Messer (16) vom festehenden Messer (10) beim Zurückschwenken ablüftet.3. Apparatus according to claim 1 or 2, characterized in that the pivot axis (17) of the movable knife (16) via toggle lever (2o) engages with a curve which the movable knife (16) from the fixed knife (1 0 ) vented when swiveling back.
EP85107185A 1984-06-23 1985-06-11 Device for cutting a tear strip Expired EP0166299B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843423295 DE3423295A1 (en) 1984-06-23 1984-06-23 DEVICE FOR CUTTING A TAKE-OFF STRIP
DE3423295 1984-06-23

Publications (3)

Publication Number Publication Date
EP0166299A2 true EP0166299A2 (en) 1986-01-02
EP0166299A3 EP0166299A3 (en) 1986-12-03
EP0166299B1 EP0166299B1 (en) 1988-06-08

Family

ID=6239040

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85107185A Expired EP0166299B1 (en) 1984-06-23 1985-06-11 Device for cutting a tear strip

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US (1) US4648299A (en)
EP (1) EP0166299B1 (en)
JP (1) JPS6119596A (en)
DE (2) DE3423295A1 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
EP0538768A1 (en) * 1991-10-18 1993-04-28 AZIONARIA COSTRUZIONI MACCHINE AUTOMATICHE-A.C.M.A.-S.p.A. Tubular pillow pack, particularly for food products
CN112706998A (en) * 2020-11-05 2021-04-27 江苏瑞驰机电科技有限公司 Processing equipment for easy-to-open pull wire of cigarette packet and cigarette strip

Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
DE3915285A1 (en) * 1989-05-10 1990-11-15 Schmermund Maschf Alfred DEVICE FOR SEPARATING TAKE-OFF STRIPS AND APPLYING ON A PACKING MATERIAL RAIL
JP3005250B2 (en) * 1989-06-30 2000-01-31 テキサス インスツルメンツ インコーポレイテツド Bus monitor integrated circuit
JP2759349B2 (en) * 1989-08-11 1998-05-28 株式会社名南製作所 Veneer veneer cutting equipment
US5480509A (en) * 1990-07-27 1996-01-02 Canon Kabushiki Kaisha Laminating apparatus
DE4301696A1 (en) * 1993-01-22 1994-08-11 Delta Real Ets Device for opening envelopes
DE10201368C1 (en) * 2002-01-16 2003-05-28 Fischer Maschf Karl E Cutting device, for cutting sheet material, comprises a sliding plate movably positioned in a delivery belt conveying direction on a delivery table between the delivery table and the sheet material

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FR406935A (en) * 1909-09-11 1910-02-15 Paul Blache Improvements in machines for cutting paper, cardboard or other similar materials
DE1128355B (en) * 1959-07-06 1962-04-19 Alfred Schmermund Device in a packaging machine for cutting off and sticking a tear strip onto the packaging material
GB952715A (en) * 1961-11-10 1964-03-18 Schmermund Alfred Improvements in or relating to cutting arrangements for cutting longitudinally moving webs
FR1364031A (en) * 1963-05-06 1964-06-19 Etudes De Machines Speciales Rotary cutting mechanism for materials in layers of significant thickness
US3750510A (en) * 1971-05-04 1973-08-07 Frastan Hollinwood Ltd Cutting apparatus for paper and like webs
DE1586093B2 (en) * 1966-07-26 1976-04-15 Hauni-Werke Körber & Co KG, 2000 Hamburg DEVICE FOR APPLYING TEAR STRIPS TO A WRAPPING TAPE

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US3709077A (en) * 1971-03-01 1973-01-09 Bretting C Mfg Co Inc Cut-off device
JPS54156890U (en) * 1978-04-24 1979-10-31
DE3241636A1 (en) * 1982-11-11 1984-05-17 Focke & Co, 2810 Verden DEVICE FOR PRODUCING PACKAGING CUTS

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Publication number Priority date Publication date Assignee Title
FR406935A (en) * 1909-09-11 1910-02-15 Paul Blache Improvements in machines for cutting paper, cardboard or other similar materials
DE1128355B (en) * 1959-07-06 1962-04-19 Alfred Schmermund Device in a packaging machine for cutting off and sticking a tear strip onto the packaging material
GB952715A (en) * 1961-11-10 1964-03-18 Schmermund Alfred Improvements in or relating to cutting arrangements for cutting longitudinally moving webs
FR1364031A (en) * 1963-05-06 1964-06-19 Etudes De Machines Speciales Rotary cutting mechanism for materials in layers of significant thickness
DE1586093B2 (en) * 1966-07-26 1976-04-15 Hauni-Werke Körber & Co KG, 2000 Hamburg DEVICE FOR APPLYING TEAR STRIPS TO A WRAPPING TAPE
US3750510A (en) * 1971-05-04 1973-08-07 Frastan Hollinwood Ltd Cutting apparatus for paper and like webs

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0538768A1 (en) * 1991-10-18 1993-04-28 AZIONARIA COSTRUZIONI MACCHINE AUTOMATICHE-A.C.M.A.-S.p.A. Tubular pillow pack, particularly for food products
CN112706998A (en) * 2020-11-05 2021-04-27 江苏瑞驰机电科技有限公司 Processing equipment for easy-to-open pull wire of cigarette packet and cigarette strip

Also Published As

Publication number Publication date
DE3563195D1 (en) 1988-07-14
DE3423295A1 (en) 1986-01-02
US4648299A (en) 1987-03-10
EP0166299B1 (en) 1988-06-08
JPS6119596A (en) 1986-01-28
EP0166299A3 (en) 1986-12-03

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