EP1649989B1 - Apparatus for cutting out one or more cups out of a plastic web - Google Patents

Apparatus for cutting out one or more cups out of a plastic web Download PDF

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Publication number
EP1649989B1
EP1649989B1 EP04025151A EP04025151A EP1649989B1 EP 1649989 B1 EP1649989 B1 EP 1649989B1 EP 04025151 A EP04025151 A EP 04025151A EP 04025151 A EP04025151 A EP 04025151A EP 1649989 B1 EP1649989 B1 EP 1649989B1
Authority
EP
European Patent Office
Prior art keywords
cutting
blades
tool according
blade
adjustable
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.)
Expired - Lifetime
Application number
EP04025151A
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German (de)
French (fr)
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EP1649989A1 (en
Inventor
Dieter Stute
Gerd Wachsmuth
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.)
G Wachsmuth & Co Werkzeugbau GmbH
Original Assignee
G Wachsmuth & Co Werkzeugbau 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 G Wachsmuth & Co Werkzeugbau GmbH filed Critical G Wachsmuth & Co Werkzeugbau GmbH
Priority to DE502004006058T priority Critical patent/DE502004006058D1/en
Priority to EP04025151A priority patent/EP1649989B1/en
Priority to AT04025151T priority patent/ATE384605T1/en
Publication of EP1649989A1 publication Critical patent/EP1649989A1/en
Application granted granted Critical
Publication of EP1649989B1 publication Critical patent/EP1649989B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • B26D2007/2607—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member for mounting die cutters
    • 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
    • B26F2001/4463—Methods and devices for rule setting, fixation, preparing cutting dies

Definitions

  • the invention relates to a tool for punching single and multiple containers made of plastic films according to the preamble of claim 1.
  • Such a tool comprises a plurality of defined via a press driven knife for cutting and cutting through the film and a cutting plate with recessed and raised cut openings, which interact with the knives. With this tool, the knives cut on a cutting plate or an anvil. If the tool is not intended to be cut or notched on a cutting plate or anvil, but at a cutting edge, the life of the tool, ie the knife, in films of the type under consideration, which have a high elongation at break and only a thickness in the range of 0.35 mm, mainly depending on the kerf, which is accordingly very narrow (about 0.005 mm) is set, which prepares manufacturing problems because of the always occurring manufacturing tolerance.
  • the object of the previous invention is to provide a tool of the type mentioned in such a way that manufacturing tolerances can be reliably compensated and the kerf is precisely adjustable, in particular to be able to cut very thin films of high elongation at break.
  • the essential suggestion of the invention is not to permanently install all cutting blades of the tool in knife feed direction as previously in knife carriers, but to arrange them in an inclined position at an angle, for example of 2.5 °, to the knife feed direction and in the skew direction.
  • This makes it possible by axial displacement of the cutting blade in the knife carriers, ie displacement in the direction of the feed direction obliquely extending cutting blade axes to set the cutting gap exactly.
  • the adjustments are made with fine thread adjusting screws arranged in the knife carriers.
  • a displacement of the cutting blades in the blade carriers in the direction of the cutting edges decreases and a displacement in the direction of the blade carrier increases the cutting gap.
  • the cutting gap is understood to mean the air gap or the distance between the cutting edges of the cutting plate and the cutting edges of the cutting knives.
  • the cutting gap can be set separately for each cutting blade. This is of great importance since the manufacturing tolerances are sometimes so great that the cutting gaps become so large that a thin film, in particular high elongation at break (for example polypropylene film), can not be cut or can not be cut properly.
  • the invention makes it possible to set the cutting blades in the ⁇ m range to the required size of the cutting gap.
  • each knife carrier to act on a push rod whose length is adjustable.
  • an adjusting unit is provided, which has an adjusting screw which is in operative connection with two parts of the push rod and causes a relative movement of the two push rod parts by axial adjustment.
  • the drawing shows a part of a tool 2 for punching single and multiple containers made of plastic film with a cutting blade unit 4, a push rod 6, an adjusting unit 8, a cam 10 and an abutment 12th
  • the cutting blade unit 4 comprises a pressure piece 14, a knife carrier 16, a cutting knife 18, which is inserted from below into a recess 20 of the knife carrier and with the aid of a Allen screw 22, which is passed through a formed in the knife carrier bore 24 and screwed into the cutting blade 18 , And a spring means 26 which is disposed between the knife carrier 16 and the head 28 of the Allen screw 22 is held in a starting position. With the help of the Allen screw 22, the bias of the spring device 26 is adjustable.
  • Each cutting blade 18 cuts at a cutting edge 29 of a stationary cutting plate or die 30.
  • the knife carrier 16 is screwed under the pressure piece 14 by means of two fastening screws 32, 32 '.
  • the fastening screws are surrounded by a guide sleeve 34, 34 ', whose ends are received by the knife carrier 16 and the pressure member 14.
  • the guide sleeves 34, 34 ' are slidably guided in guide bushes 36, 36', 38, 38 'free of play, which are fixedly arranged in a punch holder plate, not shown.
  • the guide sleeves thus serve to guide the unit of knife carrier and pressure piece in the guide bushings.
  • each cutting blade 18 is adjustable with respect to its immersion depth, the adjustment against the force or bias of the spring device 26 takes place.
  • the cutting blade 18 can switch over the push rods 6 and the plungers 14 of cutting notches and vice versa.
  • the recess 20 and thus the cutting blade 18 inserted in the recess are arranged in an oblique position at an angle ⁇ of, for example, 2.5 ° to the knife feed direction 19, cf.
  • the cutting gap 31 By moving the cutting blade 18 in the direction of the cutting edge 29, the cutting gap 31 is reduced, by moving in the direction of the knife carrier 16, the cutting gap is increased, the cutting blade set by means of fine-thread adjustment screws 17 in the ⁇ m range to the required size of the cutting gap, ie can be preset.
  • the size of the cutting gap in the considered here to be cut plastic films in the range of 0.005 mm. This default setting is necessary because of the ever-present manufacturing tolerance to achieve a proper cutting of the plastic film by adjusting the correct size of the cutting gap, but at the same time causes the cutting blade 18 is no longer at the same level, especially not at the same level with usually tools of the type considered here star stamps, the corners of containers to be separated with a rounding pruning are located.
  • the push rod 6 is designed to be adjustable in length.
  • the push rod 6 consists of a pressure piece side lower part 41 and a switching curve side upper part 42, in which the lower part is guided in a telescopic manner, and the adjusting unit 8 is provided, which has an adjusting screw 46, which in operative connection with two parts 40, 42 of the Push rod is and causes axial displacement by a movement of the two push rod parts relative to each other.
  • the adjusting screw 46 is disposed in the upper part 42 of the push rod and is driven by turning on and off, whereby an extension or shortening of the upper part 42 and corresponding shortening or lengthening of the push rod 6 total is achieved to compensate for different altitudes of the cutting blade relative to each other and / or relative to the level of the star punches.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

Tool (2) for punching out disposable and multi-use containers made of plastic films comprises several cutting blades (18) and a cutting plate (30) or matrix with cutting edges (29) that interact with the cutting blades. The cutting blade is arranged in a blade support (16) at an angle to its axial feed direction and can be adjusted in the blade support in the direction of the angle relative to the cutting edges of the cutting plate to adjust the size of the cutting gap (31). Preferred Features: The blade supports can be adjusted in height to position all the cutting blades at the same height.

Description

Die Erfindung betrifft ein Werkzeug zum Stanzen von Einfach- und Mehrfachbehältern aus Kunststofffolien gemäß Oberbegriff des Anspruchs 1.The invention relates to a tool for punching single and multiple containers made of plastic films according to the preamble of claim 1.

Durch die EP 0615910 B1 ist ein derartiges Werkzeug bekannt, dass mehrere über eine Presse definiert zufahrbare Messer zum Einschneiden und Durchschneiden der Folie und eine Schnittplatte mit vertieften und erhabenen Schnittdurchbrüchen umfasst, die mit den Messern zusammenwirken. Bei diesem Werkzeug schneiden die Messer auf einer Schnittplatte oder einem Amboss. Wenn das Werkzeug nicht auf einer Schnittplatte oder einem Amboss schneiden oder kerben soll, sondern an einer Schnittkante, ist die Standzeit des Werkzeuges d. h. der Messer bei Folien der vorliegend betrachteten Art, die eine hohe Reißdehnung aufweisen und nur eine Dicke im Bereich von 0,35 mm haben, hauptsächlich abhängig vom Schnittspalt, welcher entsprechend sehr eng (etwa 0,005 mm) einzustellen ist, was fertigungstechnisch Probleme bereitet wegen der stets auftretenden Fertigungstoleranz.By the EP 0615910 B1 Such a tool is known that comprises a plurality of defined via a press driven knife for cutting and cutting through the film and a cutting plate with recessed and raised cut openings, which interact with the knives. With this tool, the knives cut on a cutting plate or an anvil. If the tool is not intended to be cut or notched on a cutting plate or anvil, but at a cutting edge, the life of the tool, ie the knife, in films of the type under consideration, which have a high elongation at break and only a thickness in the range of 0.35 mm, mainly depending on the kerf, which is accordingly very narrow (about 0.005 mm) is set, which prepares manufacturing problems because of the always occurring manufacturing tolerance.

Die Aufgabe der vorigen Erfindung besteht darin, ein Werkzeug der eingangs genannten Art so auszubilden, dass Fertigungstoleranzen sicher kompensiert werden können und der Schnittspalt exakt einstellbar ist, um insbesondere sehr dünne Folien hoher Reißdehnung schneiden zu können.The object of the previous invention is to provide a tool of the type mentioned in such a way that manufacturing tolerances can be reliably compensated and the kerf is precisely adjustable, in particular to be able to cut very thin films of high elongation at break.

Der wesentliche Vorschlag der Erfindung besteht darin, sämtliche Schneidmesser des Werkzeugs nicht wie bisher in Messer-Zustellrichtung fest in Messerträgern einzubauen, sondern in einer Schräglage unter einem Winkel, beispielsweise von 2,5°, zur Messer-Zustellrichtung und in Schräglagenrichtung verschiebbar anzuordnen. Hierdurch ist es möglich durch axiale Verschiebung der Schneidmesser in den Messerträgern, d. h. Verschiebung in Richtung der zur Zustellrichtung schräg verlaufenden Schneidmesserachsen, die Schneidspalte exakt einzustellen. Die Einstellungen erfolgen dabei mit in den Messerträgern angeordneten Feingewinde-Einstellschrauben. Eine Verschiebung der Schneidmesser in den Messerträgern in Richtung der Schnittkanten verringert und eine Verschiebung in Richtung der Messerträger vergrößert die Schneidspalte. Unter dem Schneidspalt wird der Luftspalt bzw. der Abstand zwischen den Schnittkanten der Schnittplatte und den Schneidkanten der Schneidesser verstanden. Durch die beschriebene Maßnahme kann also der Schneidspalt für jedes einzelne Schneidmesser separat eingestellt werden. Dies ist von großer Bedeutung, da die Fertigungstoleranzen manchmal so groß sind, dass die Schneidspalte so groß werden, dass eine dünne Folie, insbesondere hoher Reißdehnung (bspw. Polypropylenfolie), nicht oder nicht ordnungsgemäß geschnitten werden kann. Durch die Erfindung ist es möglich die Schneidmesser im µm-Bereich auf die erforderliche Größe des Schneidspaltes einzustellen.The essential suggestion of the invention is not to permanently install all cutting blades of the tool in knife feed direction as previously in knife carriers, but to arrange them in an inclined position at an angle, for example of 2.5 °, to the knife feed direction and in the skew direction. This makes it possible by axial displacement of the cutting blade in the knife carriers, ie displacement in the direction of the feed direction obliquely extending cutting blade axes to set the cutting gap exactly. The adjustments are made with fine thread adjusting screws arranged in the knife carriers. A displacement of the cutting blades in the blade carriers in the direction of the cutting edges decreases and a displacement in the direction of the blade carrier increases the cutting gap. The cutting gap is understood to mean the air gap or the distance between the cutting edges of the cutting plate and the cutting edges of the cutting knives. By the measure described so the cutting gap can be set separately for each cutting blade. This is of great importance since the manufacturing tolerances are sometimes so great that the cutting gaps become so large that a thin film, in particular high elongation at break (for example polypropylene film), can not be cut or can not be cut properly. The invention makes it possible to set the cutting blades in the μ m range to the required size of the cutting gap.

Da für den ordnungsgemäßen Betrieb des Werkzeugs sämtliche Schneidmesser auf gleiche Höhe eingestellt sein müssen, insbesondere auf gleiche Höhe mit den üblicherweise bei Werkzeugen der betrachteten Art vorhanden Sternstempeln, die die Ecken von zu trennenden Behältern mit einer Verrundung beschneiden, und durch die Schneidspaltvoreinstellung die Schneidmesser unterschiedliche Höhe zur Schnittplatte aufweisen, ist weiter vorgesehen, jeden Messerträger mit einer Druckstange zu beaufschlagen, deren Länge verstellbar ist. Hierzu ist eine Justiereinheit vorgesehen, welche eine Justierschraube aufweist, die in Wirkverbindung mit zwei Teilen der Druckstange steht und durch axiale Verstellung eine Relativbewegung beider Druckstangenteile bewirkt.Since, for proper operation of the tool, all cutting blades must be set at the same height, in particular level with the star punches commonly found on tools of the type considered, which truncate the corners of containers to be separated and the cutting blades differ by the cutting gap preset Height to the cutting plate, is provided further, each knife carrier to act on a push rod whose length is adjustable. For this purpose, an adjusting unit is provided, which has an adjusting screw which is in operative connection with two parts of the push rod and causes a relative movement of the two push rod parts by axial adjustment.

Die Erfindung soll nachfolgend anhand der beigefügten Zeichnung, die ein Ausführungsbeispiel zeigt, näher erläutert werden.The invention will be explained in more detail with reference to the accompanying drawings, which shows an embodiment.

Es zeigen

Fig. 1:
eine Seitenansicht eines Teils eines erfindungsgemäßen Werkzeugs zum Stanzen von Einfach- und Mehrfachbehältern aus Kunststofffolie,
Fig. 2:
das Werkzeug nach Fig. 1 in einer um 90° gedrehten Ansicht und
Fig. 3:
eine vergrößerte Darstellung einer der beim erfindungsgemäßen Werkzeug verwendeten Schnittmessereinheiten.
Show it
Fig. 1:
a side view of a portion of a tool according to the invention for punching single and multiple containers made of plastic film,
Fig. 2:
the tool of FIG. 1 in a rotated by 90 ° view and
3:
an enlarged view of one of the cutting blade units used in the tool according to the invention.

Gleiche und einander entsprechende Bauteile sind in den Figuren der Zeichnung mit den gleichen Bezugszeichen versehen.The same and corresponding components are provided in the figures of the drawing with the same reference numerals.

Die Zeichnung zeigt einen Teil eines Werkzeugs 2 zum Stanzen von Einfach- und Mehrfachbehältern aus Kunststofffolie mit einer Schneidmessereinheit 4, einer Druckstange 6, einer Justiereinheit 8, einer Kurvenscheibe 10 und einem Gegenlager 12.The drawing shows a part of a tool 2 for punching single and multiple containers made of plastic film with a cutting blade unit 4, a push rod 6, an adjusting unit 8, a cam 10 and an abutment 12th

Die Schneidmessereinheit 4 umfasst ein Druckstück 14, einen Messerträger 16, ein Schneidmesser 18, das von unten in eine Ausnehmung 20 des Messerträgers eingesetzt ist und mit Hilfe einer Inbusschraube 22, die durch eine im Messerträger ausgebildete Bohrung 24 hindurchgeführt und in das Schneidmesser 18 eingeschraubt ist, und eine Federeinrichtung 26, die zwischen dem Messerträger 16 und dem Kopf 28 der Inbusschraube 22 angeordnet ist, in einer Ausgangslage gehalten wird. Mit Hilfe der Inbusschraube 22 ist die Vorspannung der Federeinrichtung 26 einstellbar.The cutting blade unit 4 comprises a pressure piece 14, a knife carrier 16, a cutting knife 18, which is inserted from below into a recess 20 of the knife carrier and with the aid of a Allen screw 22, which is passed through a formed in the knife carrier bore 24 and screwed into the cutting blade 18 , And a spring means 26 which is disposed between the knife carrier 16 and the head 28 of the Allen screw 22 is held in a starting position. With the help of the Allen screw 22, the bias of the spring device 26 is adjustable.

Jedes Schneidmesser 18 schneidet an einer Schnittkante 29 einer ortsfesten Schnittplatte oder Matrize 30.Each cutting blade 18 cuts at a cutting edge 29 of a stationary cutting plate or die 30.

Der Messerträger 16 wird mit Hilfe zweier Befestigungsschrauben 32, 32' unter das Druckstück 14 geschraubt. Die Befestigungsschrauben sind von einer Führungshülse 34, 34' umgeben, deren Enden vom Messerträger 16 und vom Druckstück 14 aufgenommen sind. Die Führungshülsen 34, 34' sind verschiebbar in Führungsbuchsen 36, 36', 38, 38' spielfrei geführt, die fest in einer nicht dargestellten Stempelhalteplatte angeordnet sind. Die Führungshülsen dienen somit zum Führen der Einheit aus Messerträger und Druckstück in den Führungsbuchsen.The knife carrier 16 is screwed under the pressure piece 14 by means of two fastening screws 32, 32 '. The fastening screws are surrounded by a guide sleeve 34, 34 ', whose ends are received by the knife carrier 16 and the pressure member 14. The guide sleeves 34, 34 'are slidably guided in guide bushes 36, 36', 38, 38 'free of play, which are fixedly arranged in a punch holder plate, not shown. The guide sleeves thus serve to guide the unit of knife carrier and pressure piece in the guide bushings.

Mit Hilfe von in Gewindebohrungen, insbesondere Feingewindebohrungen (nicht dargestellt), der Messerträger 16 angeordneter Einstell-Druckschrauben 17, vgl. Fig. 2 und 3 (gestrichelt in Fig. 3 angedeutet), insbesondere mit Feingewinde, ist jedes Schneidmesser 18 hinsichtlich seiner Eintauchtiefe einstellbar, wobei die Einstellung gegen die Kraft bzw. Vorspannung der Federeineinrichtung 26 erfolgt.With the help of in threaded holes, especially fine thread holes (not shown), the knife carrier 16 arranged adjusting pressure screws 17, see. Fig. 2 and 3 (dashed lines in Fig. 3 indicated), in particular with fine thread, each cutting blade 18 is adjustable with respect to its immersion depth, the adjustment against the force or bias of the spring device 26 takes place.

Zur Betätigung der Schneidmesser 18 sind die Druckstücke 14 von den Druckstangen 6 beaufschlagt, auf welche eine übliche, nicht dargestellte Presse über die Gegenlager 12 und die Kurvenscheiben 10 einwirkt, was an sich bekannt ist und daher nicht näher beschrieben werden soll.To actuate the cutting blade 18, the pressure pieces 14 are acted upon by the push rods 6, to which a usual, not shown press on the anvil 12 and the cam 10 acts, which is known per se and should therefore not be described in detail.

Über den Drehwinkel der Kurvenscheiben 10 lassen sich die Schneidmesser 18 über die Druckstangen 6 und die Druckstücke 14 von Schneiden auf Kerben und umgekehrt umstellen.About the angle of rotation of the cam 10, the cutting blade 18 can switch over the push rods 6 and the plungers 14 of cutting notches and vice versa.

Die Ausnehmung 20 und damit das in der Ausnehmung eingesetzte Schneidmesser 18 sind in einer Schräglage unter einem Winkel α von bspw. 2,5° zur Messerzustellrichtung 19 angeordnet, vgl. Fig. 3. Durch Verschiebung des Schneidmessers 18 in der Ausnehmung 20 mit Hilfe der Einstellschraube 17 kann die Lage der Schneidkante 40 des Schneidmessers 18 relativ zur Schnittkante 29 der Schnittplatte 30 eingestellt und somit der Schneidspalt 31, d. h. der Abstand zwischen der Schneidkante des Schneidmessers und der Schnittkante der Schnittplatte eingestellt werden. Durch Verschieben des Schneidmessers 18 in Richtung Schnittkante 29 wird der Schneidspalt 31 verkleinert, durch Verschieben in Richtung des Messerträgers 16 wird der Schneidspalt vergrößert, wobei die Schneidmesser mit Hilfe der Feingewinde-Einstellschrauben 17 im µm-Bereich auf die erforderliche Größe des Schneidspaltes eingestellt, d. h. voreingestellt werden können. Die Größe des Schneidspaltes liegt bei den hier betrachteten zu schneidenden Kunststofffolien im Bereich von 0,005 mm. Diese Voreinstellung ist wegen der stets vorhandenen Fertigungstoleranz notwendig, um durch Einstellen der richtigen Größe des Schneidspaltes ein einwandfreies Schneiden der Kunststofffolie zu erzielen, bewirkt aber gleichzeitig, dass sich die Schneidmesser 18 nicht mehr auf gleicher Höhe, insbesondere nicht auf gleicher Höhe mit üblicherweise bei Werkzeugen der hier betrachteten Art vorgesehenen Sternstempeln, die die Ecken von zu trennenden Behältern mit einer Verrundung beschneiden, befinden.The recess 20 and thus the cutting blade 18 inserted in the recess are arranged in an oblique position at an angle α of, for example, 2.5 ° to the knife feed direction 19, cf. By moving the cutting blade 18 in the recess 20 by means of the adjusting screw 17, the position of the cutting edge 40 of the cutting blade 18 can be adjusted relative to the cutting edge 29 of the cutting plate 30 and thus the cutting gap 31, ie the distance between the cutting edge of the cutting blade and the cutting edge of the cutting plate are adjusted. By moving the cutting blade 18 in the direction of the cutting edge 29, the cutting gap 31 is reduced, by moving in the direction of the knife carrier 16, the cutting gap is increased, the cutting blade set by means of fine-thread adjustment screws 17 in the μ m range to the required size of the cutting gap, ie can be preset. The size of the cutting gap in the considered here to be cut plastic films in the range of 0.005 mm. This default setting is necessary because of the ever-present manufacturing tolerance to achieve a proper cutting of the plastic film by adjusting the correct size of the cutting gap, but at the same time causes the cutting blade 18 is no longer at the same level, especially not at the same level with usually tools of the type considered here star stamps, the corners of containers to be separated with a rounding pruning are located.

Um die Schneidmesser auf gleiche Höhe insbesondere auf das Niveau der Sternstempel zu bringen, ist die Druckstange 6 in der Länge verstellbar ausgebildet. Hierzu besteht die Druckstange 6 aus einem druckstückseitigen unteren Teil 41 und einem schaltkurvenseitigen oberen Teil 42, in dem das untere Teil teleskopartig geführt ist, und ist die Justiereinheit 8 vorgesehen, welche eine Justierschraube 46 aufweist, die in Wirkverbindung mit beiden Teilen 40, 42 der Druckstange steht und durch axiale Verstellung eine Bewegung beider Druckstangenteile relativ zueinander bewirkt. Im dargestellten Ausführungsbeispiel (Figuren 1 und 2) ist die Justierschraube 46 im oberen Teil 42 der Druckstange angeordnet und wird durch Verdrehen ein- und aus-gefahren, wodurch eine Verlängerung oder Verkürzung des oberen Teils 42 und entsprechend eine Verkürzung oder Verlängerung der Druckstange 6 insgesamt erreicht wird zur Kompensation unterschiedlicher Höhenlagen der Schneidmesser relativ zueinander und/oder relativ zum Niveau der Sternstempel.In order to bring the cutting blade at the same level in particular to the level of the star stamp, the push rod 6 is designed to be adjustable in length. For this purpose, the push rod 6 consists of a pressure piece side lower part 41 and a switching curve side upper part 42, in which the lower part is guided in a telescopic manner, and the adjusting unit 8 is provided, which has an adjusting screw 46, which in operative connection with two parts 40, 42 of the Push rod is and causes axial displacement by a movement of the two push rod parts relative to each other. In the illustrated embodiment (Figures 1 and 2), the adjusting screw 46 is disposed in the upper part 42 of the push rod and is driven by turning on and off, whereby an extension or shortening of the upper part 42 and corresponding shortening or lengthening of the push rod 6 total is achieved to compensate for different altitudes of the cutting blade relative to each other and / or relative to the level of the star punches.

Claims (8)

  1. Tool for stamping single and multiple receptacles out of plastic film, especially plastic film with a high elongation at rupture, comprising several blades, which may be advanced in a defined manner, and a cutting plate or stencil with cutting edges, acting in combination with the blades, with cutting slits formed between the cutting edges of the cutting plate and the blades arranged in blade supports which are connected with pressure pieces being actively connected via compression members with a press, characterized in that the blades (18) are disposed in the blade supports (16) in an inclined position relating to their axial advancement direction (19) and may be adjusted in the blade supports in the direction of the inclined position relative to the cutting edges (29) of the cutting plate (30) in order to adjust the size of the cutting slit (31).
  2. Tool according to claim 1, characterized in that the blade support (16) is adjustable in its height in order to adjust all blades (18) to the same height.
  3. Tool according to claim 2, characterized in that the length of the pressure pieces (14), and thus the compression members (6) acting upon the blade supports (16), is adjustable.
  4. Tool according to claim 1, characterized in that the blades (18) are disposed in recesses (20) of the blade supports (16), which are formed at an angle relative to the axial advancement direction, and are adjustable by means of adjusting screws in the recesses (20) in the direction of the inclined axes.
  5. Tool according to claim 3, characterized in that the compression members (6) are push rods the length of which is adjustable by means of an adjustment unit (8).
  6. Tool according to claim 1 or 4, characterized in that the blade axes or the inclined axes, respectively, are disposed so that they form an angle α of approximately 2.5 ° relating to the advancement direction of the blades (19).
  7. Tool according to claim 5, characterized in that the push rod (6) comprises a first, lower part (41) arranged at the side of the pressure piece and a second upper part (42) and that the adjustment unit (8) comprises an axially adjustable control element (46) which is arranged in one of the parts (41 or 42) and actively connected with the other part (41, 42), respectively.
  8. Tool according to claim 7, characterized in that the control element (46) is an adjusting screw which may be retracted or extended, respectively, by twisting it.
EP04025151A 2004-10-22 2004-10-22 Apparatus for cutting out one or more cups out of a plastic web Expired - Lifetime EP1649989B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE502004006058T DE502004006058D1 (en) 2004-10-22 2004-10-22 Tool for punching single and multiple containers made of plastic film
EP04025151A EP1649989B1 (en) 2004-10-22 2004-10-22 Apparatus for cutting out one or more cups out of a plastic web
AT04025151T ATE384605T1 (en) 2004-10-22 2004-10-22 TOOL FOR PUNCHING SINGLE AND MULTIPLE CONTAINERS FROM PLASTIC FILMS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04025151A EP1649989B1 (en) 2004-10-22 2004-10-22 Apparatus for cutting out one or more cups out of a plastic web

Publications (2)

Publication Number Publication Date
EP1649989A1 EP1649989A1 (en) 2006-04-26
EP1649989B1 true EP1649989B1 (en) 2008-01-23

Family

ID=34927076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04025151A Expired - Lifetime EP1649989B1 (en) 2004-10-22 2004-10-22 Apparatus for cutting out one or more cups out of a plastic web

Country Status (3)

Country Link
EP (1) EP1649989B1 (en)
AT (1) ATE384605T1 (en)
DE (1) DE502004006058D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3827943A1 (en) * 2019-11-27 2021-06-02 Industrias Tecnológicas de Mecanización y Automatizaciòn, S.A. Container pre-cutting system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2730121B2 (en) * 2018-05-07 2021-03-18 Ind Tecnologicas De Mecanizacion Y Automatizacion S A PACKAGING CUTTING MATRIX
DE102018120591A1 (en) * 2018-08-23 2020-02-27 B&B Verpackungstechnik GmbH Punching device for a device for producing packaging containers from a tubular web, device and method using the same
CN109760126A (en) * 2018-12-10 2019-05-17 南京纳华动漫有限公司 Overlay film cutting machine
CN110116429A (en) * 2019-05-30 2019-08-13 武汉市海泰伟创科技有限公司 A kind of packing film cutting device

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE653072C (en) * 1935-05-26 1937-11-13 Karl Krause Fa Cutting device for cutting machines u. like
DE1297580B (en) * 1966-04-01 1969-06-19 Martini Buchbindereimaschinen Adjustment gauge for adjusting the upper knife of a knife arrangement
CH493316A (en) * 1969-05-08 1970-07-15 Rickenbacher Walter Punching device with electro-pneumatically adjustable punching knives
DE2853267A1 (en) * 1978-12-09 1980-07-24 Applic Plastique Mec Elec DEVICE FOR CUTTING OUT CONTAINERS
DE4304951C2 (en) * 1993-02-18 1997-09-11 Wachsmuth & Co Werkzeugbau Tool for punching single and multiple containers made of plastic film
DE19521604C1 (en) * 1995-06-14 1997-04-17 Wachsmuth & Co Werkzeugbau Blades adjusting device for multi-compartment stamping installation
US5839341A (en) * 1996-04-12 1998-11-24 Mate Precision Tooling Punch unit
DE19929477A1 (en) * 1999-06-26 2000-12-28 Walter Engels Cutting knife has facet facing flank, basic body to which is fixed cutting strip with cutting section and edge, insertion end, groove and thrust piece

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3827943A1 (en) * 2019-11-27 2021-06-02 Industrias Tecnológicas de Mecanización y Automatizaciòn, S.A. Container pre-cutting system

Also Published As

Publication number Publication date
ATE384605T1 (en) 2008-02-15
EP1649989A1 (en) 2006-04-26
DE502004006058D1 (en) 2008-03-13

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