EP0136602A1 - Device for manufacturing carrying bags from synthetic material - Google Patents

Device for manufacturing carrying bags from synthetic material Download PDF

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Publication number
EP0136602A1
EP0136602A1 EP84110899A EP84110899A EP0136602A1 EP 0136602 A1 EP0136602 A1 EP 0136602A1 EP 84110899 A EP84110899 A EP 84110899A EP 84110899 A EP84110899 A EP 84110899A EP 0136602 A1 EP0136602 A1 EP 0136602A1
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EP
European Patent Office
Prior art keywords
carriage
knife
web
lever
bags
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
EP84110899A
Other languages
German (de)
French (fr)
Other versions
EP0136602B1 (en
Inventor
Fritz Achelpohl
Friedhelm Mundus
Wilfried Ing. Grad. Ebmeyer
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
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Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Priority to AT84110899T priority Critical patent/ATE31161T1/en
Publication of EP0136602A1 publication Critical patent/EP0136602A1/en
Application granted granted Critical
Publication of EP0136602B1 publication Critical patent/EP0136602B1/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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • 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
    • B31B70/006—Controlling; Regulating; Measuring; Safety measures
    • 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
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • 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
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B70/16—Cutting webs
    • B31B70/18—Cutting webs longitudinally
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S493/00—Manufacturing container or tube from paper; or other manufacturing from a sheet or web
    • Y10S493/916—Pliable container
    • Y10S493/926—Pliable container having handle or suspension means
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6592—Interrelated work-conveying and tool-moving means
    • Y10T83/6595—With means to move tool laterally of feed direction during cutting

Definitions

  • the invention relates to a device for producing plastic carrier bags from a film tube sheet made of thermoplastic material, with a preferred device that intermittently transports the sheet by a width of the bag to be produced, with a device separating the film tube sheet in its central region along a wavy curve in half tube sheets, transversely to the direction of travel Foil tube web movable cutting device, the knife is provided with a tangential to the wavy control device aligning, with a detour device for moving the semi-tubular webs in the longitudinal direction by half a width of the bags to be produced relative to each other and with a cross welding separator, which is centered through the troughs of the mirror image to each other Semi-tubular webs simultaneously welded the bags in pairs.
  • a deflection roller is provided for moving the carriage carrying the cutting device, which is displaceably mounted on a guide arranged transversely to the preferred direction of the web in the machine frame Tubular film web runs, which is driven intermittently by the feed rollers and is provided with an elliptical circumferential groove in which a sliding block pushing the knife carriage back and forth runs.
  • the deflecting roller is also provided with an also elliptical cutting groove into which the cutting knife rotatably mounted on the slide is immersed.
  • a crank drive which derives its drive from the shaft of the deflecting roller and rotates the cutting knife in such a way that its cutting edge points in the longitudinal direction of the elliptical cutting groove. Since, in the known device, the deflection roller serving to control the cutting device and the cutting knife derives its drive from the intermittent drive of the feed rollers, additional masses have to be accelerated and braked with each machine cycle. Furthermore, in the known device, a format adjustment, that is to say the production of bags of different widths, is only possible if the tubular film web runs with slip over the deflection roller provided with the control curve, if the deflection roller with the associated drive devices is not to be exchanged as a whole.
  • the object of the invention is therefore to provide a device of the type specified in the introduction, in which no large masses have to be accelerated and braked to control the cutting device.
  • this object is achieved in that a in the machine frame transverse to the direction of advance of the tubular film web Carriage is displaceably guided, which is driven to and fro by a drive derived from a first rotating control cam via a gear, that a cutting knife passing through the plane of the web is rotatably supported about its longitudinal axis in the carriage about an axis perpendicular to the tubular film web a second rotating control cam derived drive controls it in such a way that its cutting edge is approximately tangential to the wave curve in the cutting point running on the wave curve.
  • the two control cams can be driven continuously in spite of the intermittent path preference, so that the devices controlling the cutting device are not accelerated and braked in cycles.
  • a simple format adjustment by changing the speed is possible in the device according to the invention. A slip of the web relative to a roller deflecting this does not have to be accepted.
  • a lever is expediently mounted with one end in the machine frame, which is supported in its central region on the circumferential surface of the control cam via a sliding block or a cam roller or runs in a corresponding groove-shaped control cam and with its other End is connected directly or via a coupling rod with the carriage.
  • a lever pivoted from the second control cam and articulated in the machine frame which carries at its end facing the carriage an axially extending slideway in which a sliding block or a roller runs is arranged at the end of a control lever pivoting the knife.
  • This lever can be in its middle Area be stored in the machine frame and carry at its end opposite the slide a slide roller or a sliding block, which run in a guide groove or on the peripheral surface of the cam.
  • the drive of the control cams is expediently derived from the main drive of the machine.
  • the control cams can be arranged coaxially on a shaft.
  • guide rods or rollers can be provided in pairs on both sides of the web and on both sides of the knife.
  • the carriage can be provided with a bracket which extends over an edge of the tubular film web and which is provided at the end of its outer leg with a rotatably mounted disk in which the upper end of the knife is held.
  • the web is guided between the legs of the bracket, so that it cannot deflect during the cut.
  • a permanent magnet can be arranged below the knife on the knife axis, which takes the disk made of magnetic material with it.
  • the rotary drive of the knife is derived from a lever pivoted by the second control cam, which is pivotably mounted on the lever moving the carriage.
  • the wave-shaped cut is carried out in such a way that the wave troughs are complementary to the wave crests.
  • the waveform is chosen in such a way that it forms handsome handle tabs on the later edges of the bag.
  • the area of the tubular film through which the wavy cut is made can be reinforced by extrusion, so that the bags have reinforced grip areas.
  • the drawing shows only the main elements of the device for producing plastic carrier bags, but not the machine frame and other parts that are not necessary for understanding.
  • the main drive of the machine continuously drives the shaft 1 on which the crank disc 2 is keyed.
  • the bolt 3, on which the connecting rod 4 is mounted, is attached eccentrically to the crank disk 2.
  • the connecting rod 4 is connected in the joint 5 to the rod 6 which is axially displaceably mounted in the machine frame and which is connected via lateral supports to the upper separating welding jaw 7, which interacts with the counter-welding roller 8, which is mounted and driven in the usual manner in the machine frame.
  • the semi-tubular webs 9, 10 are intermittently by the drive roller pair 11 in the machine cycle by a width of each bags to be produced, whereby they stand still during the welding cycle.
  • the semi-tubular webs 9, 10 are produced in that the supplied tubular film web 12 is separated in its central region by an approximately sinusoidal cut 13.
  • This separating cut is effected by the knife 14, which is arranged rotatably about the vertical knife axis in the carriage 15, which is moved back and forth by the control device transversely to the direction of travel of the web in accordance with the amplitude of the wavy cut.
  • the half-tube web 9 runs over the three-way detour 16 which shifts the half-tube webs 9, 10 by half a width of the bags to be produced, so that the two half-tube webs are arranged in mirror image to one another.
  • the semi-tubular webs 9, 10 are provided parallel to self-relocating devices 17, 18, which separate the semi-tubular webs 9, 10 from each other so far that their parts forming the later grip tabs no longer overlap one another.
  • the devices 17, 18 displacing the semi-tubular webs each consist of two deflecting rods 19, 20 arranged parallel to one another and at an angle, which are connected to one another by a web 21.
  • the devices 17, 18 are arranged rotatably and pivotably in the machine frame.
  • the half-tube webs 9, 10 running from the offset devices then run over the guide rollers 22, 23. Before the half-tube webs enter the welding station, the tabs formed by the wave crests are provided with punch hole punchings 24 by a punching device, not shown.
  • the knife 14 is arranged between guide rods 25, 26, 27, 28 provided in pairs on both sides of the web.
  • the cutting knife 14 is controlled by the cam disks 29, 30. These are fastened to the shaft 31 in planes parallel to one another.
  • the carriage 15 is guided on a rod 32 fastened transversely to the preferred direction A of the track in the machine frame. It has a roller 33 on its opposite side, with which it is supported on a rail 34.
  • the carriage 15 is moved back and forth by the coupling rod 35, which is articulated on the lever 36, which is pivotally mounted about the pivot point 37 in the machine frame.
  • a roller 38 is mounted thereon, which runs on the peripheral surface of the cam curve 30 and is pressed against it by a spring (not shown).
  • the two-armed lever 40 is pivotally mounted about the pivot point 39 and carries at one end the cam roller 41 which runs on the circumference of the cam plate 29.
  • the double-armed lever 40 is provided with a forked or groove-shaped guide 42, in which the roller 43 runs, which is mounted on the end of the control lever 44, which is fixedly connected to the axis of the cutting knife 14.
  • the shaft 31 supporting the cams 29, 30 is the output shaft of the bevel gear 45, the input shaft 46 of which is driven by the cardan shaft 47, which is connected to the shaft 48 on which the chain wheel 49 is keyed.
  • the sprocket 49 is driven by a drive chain 50 from a sprocket 51 which is keyed onto the drive shaft 1.
  • the cams 29, 30 are driven continuously by the machine drive.
  • the cams have radial cam pieces on which the cam rollers 38, 41 run when the cutting device is stationary during the intermittent web stoppages.
  • FIG. 5 shows the design of the carriage 15 and the knife 14 rotatably mounted therein.
  • the knife axis is mounted in the carriage 15 and provided with the control lever 44.
  • the carriage 15 is provided with a bracket 53 which overlaps the edge of the tubular film web 12.
  • a disc 55 is rotatably mounted, which is provided with a central slot in which the upper edge of the cutting knife 14 is held.
  • a permanent magnet 56 is fastened on the knife shaft below the tubular web 12 and, due to its magnetic force, rotates the disk 55 to relieve the cutting knife.
  • the cam disks 60, 61 are driven in the manner described above by the output shaft of the bevel gear 45.
  • the roller 62 runs on the circumference of the cam disk 61 and is arranged in the central region of the lever 64 mounted in the frame at the pivot point 63. With the end of the lever 64, the knife carriage 15 is connected to its reciprocating drive in a manner not shown.
  • the lever 64 is provided in a manner not shown with a plug connection which effects length compensation.
  • the tooth segment 66 is mounted in the pivot point 65, which meshes with the pinion 67, which the knife in each case tangential direction of the wave curve adjusted.
  • the toothed segment 66 forms an arm of a two-armed lever, the other arm 68 of which at the end carries a cam roller 69 which runs on the circumference of the cam plate 60.
  • the levers 68 and 64 are each pressed against the peripheral surfaces of the cams by the springs shown.

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  • Making Paper Articles (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

In an apparatus for making plastics carrier bags from a web of tubular film of thermoplastic material, a feeding mechanism intermittently conveys the webs by one bag width and a severing mechanism cuts the web into half tubes along an undulating curve. A carriage displaceable in the machine frame transversely to the feeding direction of the web is reciprocated by a drive derived from a first rotating control cam through gearing. A cutting knife pivotable in the carriage about its longitudinal axis passes through the plane of the tube about an axis perpendicular thereto and is so controlled by an oscillating drive derived from a second rotating control cam that its edge is substantially tangential to the undulating curve at the cutting point. A detour assembly retards one of the half tubes to bring the bag side edge zones into phase and each half tube is formed into bags by a transverse sever-sealing device.

Description

Die Erfindung betrifft eine Vorrichtung zum Herstellen von Kunststofftragetaschen aus einer Folienschlauchbahn aus thermoplastischem Kunststoff mit einer die Bahn intermittierend um jeweils eine Breite der herzustellenden Beutel transportierenden Vorzugeinrichtung, mit einer die Folienschlauchbahn in ihrem mittleren Bereich längs einer wellenförmigen Kurve in Halbschlauchbahnen trennenden, quer zur Laufrichtung der Folienschlauchbahn verfahrbaren Schneideinrichtung, deren Messer mit einer dieses tangential zur wellenförmigen Kurve ausrichtenden Steuereinrichtung versehen ist, mit einer Umwegeinrichtung zum Verschieben der Halbschlauchbahnen in Längsrichtung um eine halbe Breite der herzustellenden Beutel relativ zueinander und mit einer Querschweißtrenneinrichtung, die mittig durch die Wellentäler der spiegelbildlich zueinander ausgerichteten Halbschlauchbahnen gleichzeitig von diesen paarweise die Beutel abschweißt.The invention relates to a device for producing plastic carrier bags from a film tube sheet made of thermoplastic material, with a preferred device that intermittently transports the sheet by a width of the bag to be produced, with a device separating the film tube sheet in its central region along a wavy curve in half tube sheets, transversely to the direction of travel Foil tube web movable cutting device, the knife is provided with a tangential to the wavy control device aligning, with a detour device for moving the semi-tubular webs in the longitudinal direction by half a width of the bags to be produced relative to each other and with a cross welding separator, which is centered through the troughs of the mirror image to each other Semi-tubular webs simultaneously welded the bags in pairs.

Bei einer aus den DE-OS 30 04 220 und 30 04 244 bekannten Vorrichtung dieser Art ist zum Verfahren des die Schneideinrichtung tragenden Schlittens, der auf einer quer zur Vorzugsrichtung der Bahn im Maschinengestell angeordneten Führung verschieblich gelagert ist, eine Umlenkwalze vorgesehen, über die die Schlauchfolienbahn läuft, die intermittierend mit den Vorzugswalzen angetrieben ist und mit einer elliptischen Umfangsnut versehen ist, in der ein den Messerschlitten hin- und herverschiebender Gleitstein läuft. Parallel zu dieser Führungsnut ist die Umlenkwalze mit einer ebenfalls elliptischen Schneidnut versehen, in die das drehbar auf dem Schlitten gelagerte Schneidmesser eintaucht. Zur Steuerung des Schneidmessers in tangentialer Richtung der wellenförmigen Kurve ist ein Kurbeltrieb vorgesehen, der seinen Antrieb von der Welle der Umlenkwalze ableitet und das Schneidmesser derart verdreht, daß dessen Schneide in Längsrichtung der elliptischen Schneidnut weist. Da bei der bekannten Vorrichtung die der Steuerung der Schneideinrichtung und des Schneidmessers dienende Umlenkwalze ihren Antrieb von dem intermittierenden Antrieb der Vorzugswalzen ableitet, müssen mit jedem Maschinentakt zusätzliche Massen beschleunigt und abgebremst werden. Weiterhin ist bei der bekannten Vorrichtung eine Formatverstellung, also die Herstellung von Beuteln unterschiedlicher Breite, nur möglich, wenn die Schlauchfolienbahn mit Schlupf über die mit der Steuerkurve versehene Umlenkwalze läuft, wenn nicht die Umlenkwalze mit den zugehörigen Antriebseinrichtungen insgesamt ausgetauscht werden soll.In a device of this type known from DE-OS 30 04 220 and 30 04 244, a deflection roller is provided for moving the carriage carrying the cutting device, which is displaceably mounted on a guide arranged transversely to the preferred direction of the web in the machine frame Tubular film web runs, which is driven intermittently by the feed rollers and is provided with an elliptical circumferential groove in which a sliding block pushing the knife carriage back and forth runs. Parallel to this guide groove, the deflecting roller is also provided with an also elliptical cutting groove into which the cutting knife rotatably mounted on the slide is immersed. To control the cutting knife in the tangential direction of the undulating curve, a crank drive is provided which derives its drive from the shaft of the deflecting roller and rotates the cutting knife in such a way that its cutting edge points in the longitudinal direction of the elliptical cutting groove. Since, in the known device, the deflection roller serving to control the cutting device and the cutting knife derives its drive from the intermittent drive of the feed rollers, additional masses have to be accelerated and braked with each machine cycle. Furthermore, in the known device, a format adjustment, that is to say the production of bags of different widths, is only possible if the tubular film web runs with slip over the deflection roller provided with the control curve, if the deflection roller with the associated drive devices is not to be exchanged as a whole.

Aufgabe der Erfindung ist es daher, eine Vorrichtung der eingangs angegebenen Art zu schaffen, bei der zur Steuerung der Schneideinrichtung keine größeren Massen beschleunigt und abgebremst werden müssen.The object of the invention is therefore to provide a device of the type specified in the introduction, in which no large masses have to be accelerated and braked to control the cutting device.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß im Maschinengestell quer zur Vorschubrichtung der Schlauchfolienbahn ein Schlitten verschieblich geführt ist, der durch einen von einer ersten rotierenden Steuerkurve über ein Getriebe abgeleiteten Antrieb hin- und hergehend angetrieben ist, daß in dem Schlitten um eine zu der Schlauchfolienbahn senkrechte Achse ein die Bahnebene durchsetzendes Schneidmesser um seine Längsachse drehbar gelagert ist, dessen von einer zweiten rotierenden Steuerkurve abgeleiteter Drehantrieb dieses derart steuert, daß dessen Schneide in dem auf der Wellenkurve verlaufenden Schneidpunkt etwa tangential zur Wellenkurve steht. Bei der erfindungsgemäßen Vorrichtung können die beiden Steuerkurven trotz des intermittierenden Bahnvorzugs kontinuierlich angetrieben werden, so daß ein taktweises Beschleunigen und Abbremsen der die Schneideinrichtung steuernden Einrichtungen entfällt. Weiterhin ist bei der erfindungsgemäßen Vorrichtung eine einfache Formatverstellung durch eine Geschwindigkeitsänderung möglich. Ein Schlupf der Bahn relativ zu einer diese umlenkenden Walze muß hierbei nicht in Kauf genommen werden.According to the invention, this object is achieved in that a in the machine frame transverse to the direction of advance of the tubular film web Carriage is displaceably guided, which is driven to and fro by a drive derived from a first rotating control cam via a gear, that a cutting knife passing through the plane of the web is rotatably supported about its longitudinal axis in the carriage about an axis perpendicular to the tubular film web a second rotating control cam derived drive controls it in such a way that its cutting edge is approximately tangential to the wave curve in the cutting point running on the wave curve. In the device according to the invention, the two control cams can be driven continuously in spite of the intermittent path preference, so that the devices controlling the cutting device are not accelerated and braked in cycles. Furthermore, a simple format adjustment by changing the speed is possible in the device according to the invention. A slip of the web relative to a roller deflecting this does not have to be accepted.

Zweckmäßigerweise ist zum hin- und hergehenden Antrieb des Schlittens ein Hebel mit seinem einen Ende im Maschinengestell schwenkbar gelagert, der sich in seinem mittleren Bereich auf der Umfangsfläche der Steuerkurve über einen Gleitstein oder eine Nockenrolle abstützt oder in einer entsprechenden nutförmigen Steuerkurve läuft und mit seinem anderen Ende unmittelbar oder über eine Koppelstange mit dem Schlitten gelenkig verbunden ist.For the reciprocating drive of the slide, a lever is expediently mounted with one end in the machine frame, which is supported in its central region on the circumferential surface of the control cam via a sliding block or a cam roller or runs in a corresponding groove-shaped control cam and with its other End is connected directly or via a coupling rod with the carriage.

In weiterer Ausgestaltung der Erfindung ist zur Drehung des Messers in dem Schlitten ein von der zweiten Steuerkurve verschwenkter, im Maschinengestell gelenkig gelagerter Hebel vorgesehen, der an seinem dem Schlitten zugewandten Ende eine axial verlaufende Gleitbahn trägt, in der ein Gleitstein oder eine Rolle läuft, die am Ende eines das Messer verschwenkenden Steuerhebels angeordnet ist. Dieser Hebel kann in seinem mittleren Bereich im Maschinengestell gelagert sein und an seinem der Gleitbahn gegenüberliegenden Ende eine Gleitrolle oder einen Gleitstein tragen, die in einer Führungsnut oder auf der Umfangsfläche der Steuerkurve laufen.In a further embodiment of the invention, to rotate the knife in the carriage, a lever pivoted from the second control cam and articulated in the machine frame is provided, which carries at its end facing the carriage an axially extending slideway in which a sliding block or a roller runs is arranged at the end of a control lever pivoting the knife. This lever can be in its middle Area be stored in the machine frame and carry at its end opposite the slide a slide roller or a sliding block, which run in a guide groove or on the peripheral surface of the cam.

Zweckmäßigerweise ist der Antrieb der Steuerkurven von dem Hauptantrieb der Maschine abgeleitet. Die Steuerkurven können gleichachsig auf einer Welle angeordnet sein.The drive of the control cams is expediently derived from the main drive of the machine. The control cams can be arranged coaxially on a shaft.

Zum Straffhalten und Führen der Bahn im Bereich des Messers können beidseits der Bahn und beidseits des Messers paarweise Führungsstangen oder -walzen vorgesehen sein.In order to hold and guide the web in the area of the knife, guide rods or rollers can be provided in pairs on both sides of the web and on both sides of the knife.

In anderer Ausgestaltung der Erfindung kann der Schlitten mit einem über einen Rand der Schlauchfolienbahn greifenden Bügel versehen sein, der am Ende seines äußeren Schenkels mit einer drehbar gelagerten Scheibe versehen ist, in der das obere Ende des Messers gehaltert ist. Zwischen den Schenkeln des Bügels ist die Bahn geführt, so daß sie während des Schnittes nicht ausweichen kann. Um das Messer von der Mitnahme der Scheibe zu entlasten, kann unterhalb des Messers auf der Messerachse ein Permanentmagnet angeordnet sein, der die aus magnetischem Material bestehende Scheibe mitnimmt.In another embodiment of the invention, the carriage can be provided with a bracket which extends over an edge of the tubular film web and which is provided at the end of its outer leg with a rotatably mounted disk in which the upper end of the knife is held. The web is guided between the legs of the bracket, so that it cannot deflect during the cut. In order to relieve the knife of the entrainment of the disk, a permanent magnet can be arranged below the knife on the knife axis, which takes the disk made of magnetic material with it.

In weiterer Ausgestaltung der Erfindung ist vorgesehen, daß der Drehantrieb des Messers von einem von der zweiten Steuerkurve verschwenkten Hebel abgeleitet ist, der schwenkbar auf dem den Schlitten verfahrenden Hebel gelagert ist. Bei dieser Ausgestaltung werden Antriebseinrichtungen gespart.und die Ausgestaltung der Steuerkurven vereinfacht sich.In a further embodiment of the invention it is provided that the rotary drive of the knife is derived from a lever pivoted by the second control cam, which is pivotably mounted on the lever moving the carriage. With this configuration, drive devices are saved and the configuration of the control cams is simplified.

Um die Beutel von den parallel zueinander verlaufenden Halbschlauchbahnen nebeneinanderliegend abschweißen zu können, kann zwischen der Schneideinrichtung und der-Querschweiß-Trenn-Einrichtung mindestens eine aus zwei zueinander parallelen Wendestangen bestehende Einrichtung zum Versetzen der zugehörigen Halbschlauchbahn parallel zu sich selbst nach außen vorgesehen sein.In order to be able to weld the bags from the semi-tubular webs running parallel to one another, one can choose between the cutting device and the - cross-weld separator direction at least one device consisting of two mutually parallel turning bars for displacing the associated half-tube web parallel to itself can be provided to the outside.

Der wellenförmige Schnitt wird derart ausgeführt, daß die Wellentäler komplementär zu den Wellenbergen sind. Die Wellenform wird derart gewählt, daß sie an den späteren Beutelrändern ansehnliche Grifflaschen bilden. Der Bereich der Schlauchfolie, durch den der wellenförmige Schnitt gelegt wird, kann durch Extrusion verstärkt sein, so daß die Beutel verstärkte Griffbereiche aufweisen.The wave-shaped cut is carried out in such a way that the wave troughs are complementary to the wave crests. The waveform is chosen in such a way that it forms handsome handle tabs on the later edges of the bag. The area of the tubular film through which the wavy cut is made can be reinforced by extrusion, so that the bags have reinforced grip areas.

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt

  • Fig. 1 eine Seitenansicht der Vorrichtung zum Herstellen von Kunststofftragetaschen in schematischer Darstellung,
  • Fig. 2 eine Draufsicht auf die Vorrichtung nach Fig. 1,
  • Fig. 3 eine Draufsicht auf die Steuerung des das Schneidmesser tragenden Schlittens sowie des Schneidmessers,
  • Fig. 4 eine der Fig. 3 entsprechende Darstellung der Steuerung mit unterschiedlichen Stellungen der Getriebehebel,
  • Fig. 5 einen Schnitt durch den Schlitten längs der Linie V - V in Fig. 4,
  • Fig. 6 einen Schnitt durch die Steuereinrichtung längs der Linie VI - VI in Fig. 4,
  • Fig. 7 eine Seitenansicht der Steuereinrichtung mit Antriebseinrichtungen,
  • Fig. 8 eine Draufsicht auf eine andere Ausführungsform des Schlittens,
  • Fig. 9 einen Schnitt durch den Schlitten nach Fig. 8 und
  • Fig. 10 eine Draufsicht auf eine andere Steuereinrichtung des Schlittens und des Schneidmessers in schematischer Darstellung.
Embodiments of the invention are explained in more detail below with reference to the drawing. In this shows
  • 1 is a side view of the device for producing plastic carrier bags in a schematic representation,
  • 2 is a plan view of the device of FIG. 1,
  • 3 is a top view of the control of the carriage carrying the cutting knife and the cutting knife,
  • 4 shows a representation of the control corresponding to FIG. 3 with different positions of the gear lever,
  • 5 shows a section through the carriage along the line V - V in FIG. 4,
  • 6 shows a section through the control device along the line VI-VI in FIG. 4,
  • 7 is a side view of the control device with drive devices,
  • 8 is a plan view of another embodiment of the carriage,
  • Fig. 9 shows a section through the carriage of Fig. 8 and
  • Fig. 10 is a plan view of another control device of the carriage and the cutting knife in a schematic representation.

In der Zeichnung sind der besseren Übersicht halber nur die Hauptelemente der Vorrichtung zum Herstellen von Kunststofftragetaschen dargestellt, nicht aber auch das Maschinengestell und weitere zum Verständnis nicht erforderliche Teile.For the sake of a better overview, the drawing shows only the main elements of the device for producing plastic carrier bags, but not the machine frame and other parts that are not necessary for understanding.

Der Hauptantrieb der Maschine treibt kontinuierlich die Welle 1 an, auf der die Kurbelscheibe 2 aufgekeilt ist. Auf der Kurbelscheibe 2 ist exzentrisch der Bolzen 3 befestigt, auf dem die Pleuelstange 4 gelagert ist. Die Pleuelstange 4 ist im Gelenk 5 mit der im Maschinengestell axial verschieblich gelagerten Stange 6 verbunden, die über seitliche Träger mit der oberen Trennschweißbacke 7 verbunden ist, die mit der Gegenschweißrolle 8 zusammenwirkt, die in üblicher Weise in dem Maschinengestell gelagert und angetrieben ist.The main drive of the machine continuously drives the shaft 1 on which the crank disc 2 is keyed. The bolt 3, on which the connecting rod 4 is mounted, is attached eccentrically to the crank disk 2. The connecting rod 4 is connected in the joint 5 to the rod 6 which is axially displaceably mounted in the machine frame and which is connected via lateral supports to the upper separating welding jaw 7, which interacts with the counter-welding roller 8, which is mounted and driven in the usual manner in the machine frame.

Die Halbschlauchbahnen 9, 10 werden von dem Antriebswalzenpaar 11 im Maschinentakt intermittierend um jeweils eine Breite der herzustellenden Beutel vorgeschoben, wobei sie jeweils während des Schweißtakts stillstehen.The semi-tubular webs 9, 10 are intermittently by the drive roller pair 11 in the machine cycle by a width of each bags to be produced, whereby they stand still during the welding cycle.

Die Halbschlauchbahnen 9, 10 werden dadurch hergestellt, daß die zugeführte Schlauchfolienbahn 12 in ihrem mittleren Bereich durch einen etwa sinusförmigen Schnitt 13 getrennt wird. Dieser Trennschnitt wird durch das Messer 14 bewirkt, das um die vertikale Messerachse drehbar in dem Schlitten 15 angeordnet ist, der entsprechend der Amplitude des wellenförmigen Schnitts von einer Steuereinrichtung quer zur Laufrichtung der Bahn hin- und herbewegt wird.'Nach der Ausführung des sinusförmigen Trennschnitts läuft die Halbschlauchbahn 9 über die aus drei Walzen bestehende Umwegeinrichtung 16, die die Halbschlauchbahnen 9,10 um eine halbe Breite der herzustellenden Beutel relativ zueinander verschiebt, so daß die beiden Halbschlauchbahnen spiegelbildlich zueinander angeordnet sind.The semi-tubular webs 9, 10 are produced in that the supplied tubular film web 12 is separated in its central region by an approximately sinusoidal cut 13. This separating cut is effected by the knife 14, which is arranged rotatably about the vertical knife axis in the carriage 15, which is moved back and forth by the control device transversely to the direction of travel of the web in accordance with the amplitude of the wavy cut. ' After executing the sinusoidal separating cut, the half-tube web 9 runs over the three-way detour 16 which shifts the half-tube webs 9, 10 by half a width of the bags to be produced, so that the two half-tube webs are arranged in mirror image to one another.

Zwischen der Umwegeinrichtung 16 und den Vorzugswalzen 11 sind die Halbschlauchbahnen 9, 10 parallel zu sich selbst versetzende Einrichtungen 17, 18 vorgesehen, die die Halbschlauchbahnen 9, 10 so weit voneinander entfernen, daß deren die späteren Grifflappen bildenden Teile einander nicht mehr überlappen. Die die Halbschlauchbahnen versetzenden Einrichtungen 17, 18 bestehen aus jeweils zwei parallel zueinander und schräg angeordneten Umlenkstangen 19, 20, die durch einen Steg 21 miteinander verbunden sind. Um den Versatz einstellen zu können, sind die Einrichtungen 17, 18 drehbar und schwenkbar im Maschinengestell angeordnet. Die von den Versatzeinrichtungen ablaufenden Halbschlauchbahnen 9, 10 laufen sodann über die Leitwalzen 22, 23. Bevor die Halbschlauchbahnen in die Schweißstation einlaufen, werden die durch die Wellenberge gebildeten Grifflappen durch eine nicht dargestellte Stanzeinrichtung mit Grifflochausstanzungen 24 versehen.Between the detour device 16 and the preferred rollers 11, the semi-tubular webs 9, 10 are provided parallel to self-relocating devices 17, 18, which separate the semi-tubular webs 9, 10 from each other so far that their parts forming the later grip tabs no longer overlap one another. The devices 17, 18 displacing the semi-tubular webs each consist of two deflecting rods 19, 20 arranged parallel to one another and at an angle, which are connected to one another by a web 21. In order to be able to set the offset, the devices 17, 18 are arranged rotatably and pivotably in the machine frame. The half-tube webs 9, 10 running from the offset devices then run over the guide rollers 22, 23. Before the half-tube webs enter the welding station, the tabs formed by the wave crests are provided with punch hole punchings 24 by a punching device, not shown.

Zur Straffhaltung der Bahn 12 im Bereich des Trennschnitts ist das Messer 14 zwischen jeweils paarweise beidseits der Bahn vorgesehenen Leitstangen 25, 26, 27, 28 angeordnet.To keep the web 12 taut in the region of the separating cut, the knife 14 is arranged between guide rods 25, 26, 27, 28 provided in pairs on both sides of the web.

Die Steuerung des Schneidmessers 14 erfolgt durch die Kurvenscheiben 29, 30. Diese sind in zueinander parallelen Ebenen auf der Welle 31 befestigt. Der Schlitten 15 ist auf einer quer zur Vorzugsrichtung A der Bahn im Maschinengestell befestigten Stange 32 geführt. Er weist auf seiner gegenüberliegenden Seite eine Rolle 33 auf, mit der er auf einer Schiene 34 abgestützt ist. Der Schlitten 15 wird von der Koppelstange 35 hin- und hergehend verschoben, die an dem Hebel 36 angelenkt ist, der um den Drehpunkt 37 in dem Maschinengestell schwenkbar gelagert ist.The cutting knife 14 is controlled by the cam disks 29, 30. These are fastened to the shaft 31 in planes parallel to one another. The carriage 15 is guided on a rod 32 fastened transversely to the preferred direction A of the track in the machine frame. It has a roller 33 on its opposite side, with which it is supported on a rail 34. The carriage 15 is moved back and forth by the coupling rod 35, which is articulated on the lever 36, which is pivotally mounted about the pivot point 37 in the machine frame.

Im mittleren Bereich des Schwenkhebels 36 ist auf diesem eine Laufrolle 38 gelagert, die auf der Umfangsfläche der Nockenkurve 30 läuft und durch eine nicht dargestellte Feder gegen diese angedrückt ist.In the central region of the pivot lever 36, a roller 38 is mounted thereon, which runs on the peripheral surface of the cam curve 30 and is pressed against it by a spring (not shown).

Im Maschinengestell ist um den Drehpunkt 39 der zweiarmige Hebel 40 schwenkbar gelagert, der an seinem einen Ende die Nockenrolle 41 trägt, die auf dem Umfang der Kurvenscheibe 29 abläuft. An seinem anderen Ende ist der doppelarmige Hebel 40 mit einer gegabelten oder nutförmigen Führung 42 versehen, in der die Rolle 43 läuft, die an dem Ende des Steuerhebels 44 gelagert ist, der fest mit der Achse des Schneidmessers 14 verbunden ist.In the machine frame, the two-armed lever 40 is pivotally mounted about the pivot point 39 and carries at one end the cam roller 41 which runs on the circumference of the cam plate 29. At its other end, the double-armed lever 40 is provided with a forked or groove-shaped guide 42, in which the roller 43 runs, which is mounted on the end of the control lever 44, which is fixedly connected to the axis of the cutting knife 14.

Die die Kurvenscheiben 29, 30 tragende Welle 31 ist die Ausgangswelle des Kegelradgetriebes 45, dessen Eingangswelle 46 durch die Kardanwelle 47 angetrieben wird, die mit der Welle 48 verbunden ist, auf die das Kettenrad 49 aufgekeilt ist. Das Kettenrad 49 wird durch eine Antriebskette 50 von einem Kettenrad 51 angetrieben, das auf die Antriebswelle 1 aufgekeilt ist.The shaft 31 supporting the cams 29, 30 is the output shaft of the bevel gear 45, the input shaft 46 of which is driven by the cardan shaft 47, which is connected to the shaft 48 on which the chain wheel 49 is keyed. The sprocket 49 is driven by a drive chain 50 from a sprocket 51 which is keyed onto the drive shaft 1.

Die Kurvenscheiben 29, 30 werden kontinuierlich mit den Haschinenantrieb angetrieben. Die Kurvenscheiben weisen radiale Kurvenstücke auf, auf denen die Nockenrollen 38, 41 laufen, wenn die Schneideinrichtung während der intermittierenden bahnstillstände stillsteht.The cams 29, 30 are driven continuously by the machine drive. The cams have radial cam pieces on which the cam rollers 38, 41 run when the cutting device is stationary during the intermittent web stoppages.

Aus Fig. 5 ist die Ausgestaltung des Schlittens 15 und das in diesem drehbar gelagerte Messer 14 ersichtlich. Die Messerachse ist in dem Schlitten 15 gelagert und mit dem Steuerhebel 44 versehen.5 shows the design of the carriage 15 and the knife 14 rotatably mounted therein. The knife axis is mounted in the carriage 15 and provided with the control lever 44.

Bei der Ausführungsform nach Fig. 9 ist der Schlitten 15 mit einem den Rand der Schlauchfolienbahn 12 übergreifenden Bügel 53 versehen. In dem Ende des oberen Schenkels 54 des Bügels ist eine Scheibe 55 leicht drehbar gelagert, die mit einem zentralen Schlitz versehen ist, in dem die obere Kante des Schneidmessers 14 gehaltert ist. Unterhalb der Schlauchbahn 12 ist auf der Messerwelle ein Permanentmagnet 56 befestigt, der zur Entlastung des Schneidmessers aufgrund seiner magnetischen Kraft die Scheibe 55 mitdreht.In the embodiment according to FIG. 9, the carriage 15 is provided with a bracket 53 which overlaps the edge of the tubular film web 12. In the end of the upper leg 54 of the bracket, a disc 55 is rotatably mounted, which is provided with a central slot in which the upper edge of the cutting knife 14 is held. A permanent magnet 56 is fastened on the knife shaft below the tubular web 12 and, due to its magnetic force, rotates the disk 55 to relieve the cutting knife.

Bei der Ausführungsform nach Fig. 10 werden die Kurvenscheiben 60, 61 in der zuvor beschriebenen Weise von der Ausgangswelle des Kegelradgetriebes 45 angetrieben. Auf dem Umfang der Kurvenscheibe 61 läuft die Rolle 62, die im mittleren Bereich des im Drehpunkt 63 im Gestell gelagerten Hebels 64 angeordnet ist. Mit dem Ende des Hebels 64 ist der Messerschlitten 15 in nicht dargestellter Weise zu seinem hin- und hergehenden Antrieb verbunden. Der Hebel 64 ist in nicht dargestellter Weise mit einer den Längenausgleich bewirkenden Steckverbindung versehen.In the embodiment according to FIG. 10, the cam disks 60, 61 are driven in the manner described above by the output shaft of the bevel gear 45. The roller 62 runs on the circumference of the cam disk 61 and is arranged in the central region of the lever 64 mounted in the frame at the pivot point 63. With the end of the lever 64, the knife carriage 15 is connected to its reciprocating drive in a manner not shown. The lever 64 is provided in a manner not shown with a plug connection which effects length compensation.

Auf dem Hebel 64 ist im Drehpunkt 65 das Zahnsegment 66 gelagert, das mit dem Ritzel 67 kämmt, das das Messer jeweils in tangentialer Richtung der Wellenkurve verstellt. Das Zahnsegment 66 bildet einen Arm eines zweiarmigen Hebels, dessen anderer Arm 68 endseitig eine Nockenrolle 69 trägt, die auf dem Umfang der Kurvenscheibe 60 läuft. Die Hebel 68 und 64 sind jeweils durch die dargestellten Federn gegen die Umfangsflächen der Kurvenscheiben angedrückt.On the lever 64, the tooth segment 66 is mounted in the pivot point 65, which meshes with the pinion 67, which the knife in each case tangential direction of the wave curve adjusted. The toothed segment 66 forms an arm of a two-armed lever, the other arm 68 of which at the end carries a cam roller 69 which runs on the circumference of the cam plate 60. The levers 68 and 64 are each pressed against the peripheral surfaces of the cams by the springs shown.

Claims (11)

1. Vorrichtung zum Herstellen von Kunststofftragetaschen aus einer Folienschlauchbahn aus thermoplastischem Kunststoff
mit einer die Bahn intermittierend jeweils um die Breite der herzustellenden Beutel transportierenden Vorzugeinrichtung,
mit einer die Folienschlauchbahn in ihrem mittleren Bereich längs einer wellenförmigen Kurve in Halbschlauchbahnen trennenden, quer zur Laufrichtung der Folienschlauchbahn verfahrbaren Schneideinrichtung, deren Messer mit einer dieses tangential zur wellenförmigen Kurve ausrichtenden Steuereinrichtung versehen ist,
mit einer Umwegeinrichtung zum Verschieben der Halbschlsuchbahnen in Längsrichtung um eine halbe Breite der herzustellenden Beutel relativ zueinander und
mit einer Querschweißtrenneinrichtung, die mittig durch die Wellentäler der spiegelbildlich zueinander ausgerichteten Halbschlauchbahnen gleichzeitig von diesen paarweise die Beutel abschweißt,
dadurch gekennzeichnet, daß im Maschinengestell quer zur Vorschubrichtung der Schlauchfolienbahn ein Schlitten verschieblich geführt ist, der durch einen von einer ersten rotierenden Steuerkurve über ein Getriebe abgeleiteten Antrieb hin- und hergehend angetrieben ist, und daß in dem Schlitten um eine zu der Schlauchfolienbahn senkrechte Achse ein die Schlauchebene durchsetzendes Schneidmesser um seine Längsachse drehbar gelagert ist, dessen von einer zweiten rotierenden Steuerkurve abgeleiteter Drehantrieb dieses derart steuert, daß dessen Schneide in dem auf der Wellenkurve verlaufenden Schneidpunkt etwa tangential zur Wellenkurve steht.1. Device for producing plastic carrier bags from a film tube made of thermoplastic material
with a preferred device transporting the web intermittently around the width of the bags to be produced,
with a cutting device which separates the film tube web in its central region along a wavy curve in half-tube webs and which can be moved transversely to the running direction of the film tube web, the knife of which is provided with a control device orienting it tangentially to the wave-shaped curve,
with a detour device for displacing the half-search tracks in the longitudinal direction by half a width of the bags to be produced relative to one another and
with a cross-welding separating device, which simultaneously welds the bags in pairs in the middle through the troughs of the half-tubular webs, which are aligned in mirror image,
characterized in that a carriage is displaceably guided in the machine frame transversely to the direction of advance of the tubular film web, which is driven back and forth by a drive derived from a first rotating control cam via a gear, and in that in the carriage about an axis perpendicular to the tubular film web the cutting knife passing through the hose plane is rotatably supported about its longitudinal axis, the rotary drive derived from a second rotating control cam controls the latter such that its cutting edge is approximately tangential to the wave curve in the cutting point running on the wave curve. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zum hin- und hergehenden Antrieb des Schlittens ein Hebel mit seinem einen Ende im Maschinengestell schwenkbar gelagert ist, der sich in seinem mittleren Bereich auf der Umfangsfläche der Steuerkurve über einen Gleitstein oder eine Nockenrolle abstützt oder in einer entsprechenden nutförmigen Steuerkurve läuft und mit seinem anderen Ende unmittelbar oder über eine Koppelstange mit dem Schlitten gelenkig verbunden ist.2. Apparatus according to claim 1, characterized in that for the reciprocating drive of the carriage, a lever is pivotally mounted with its one end in the machine frame, which is supported in its central region on the peripheral surface of the cam via a sliding block or a cam roller or runs in a corresponding groove-shaped control curve and is articulated at its other end directly or via a coupling rod to the carriage. 3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß zur Drenung des Messers in dem Schlitten ein von der zweiten Steuerkurve verschwenkter, im Maschinengestell gelenkig gelagerter Hebel vorgesehen ist, der an seinem den: Schlitten zugewandten Ende eine axial verlaufende Gleitbahn trägt, in der ein Gleitstein oder eine Rolle läuft, die am Ende eines das Messer verschwenkenden Steuerhebels angeordnet ist.3. Apparatus according to claim 1 or 2, characterized in that for the drainage of the knife in the carriage a pivoted by the second control cam, articulated in the machine frame lever is provided which carries at its end facing the carriage an axially extending slide, in which runs a sliding block or a roller which is arranged at the end of a control lever pivoting the knife. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Hebel in seinem mittleren Bereich im Maschinengestell gelagert und an seinem der Gleitbahn gegenüberliegenden Ende eine Gleitrolle oder dergleichen trägt, die in einer Führungsnut oder auf der Umfangsfläche der Steuerkurve läuft.4. Device according to one of claims 1 to 3, characterized in that the lever is mounted in its central region in the machine frame and carries at its end opposite the slide a slide roller or the like which runs in a guide groove or on the peripheral surface of the control cam. 5. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Antrieb der Steuerkurven von dem Hauptantrieb der Maschine abgeleitet ist.5. Device according to one of the preceding claims, characterized in that the drive of the control cams is derived from the main drive of the machine. 6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Steuerkurven gleichachsig auf einer Welle angeordnet sind.6. Device according to one of the preceding claims, characterized in that the control cams are arranged coaxially on a shaft. 7. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Bahn im Bereich des Messers über beidseits von dieser und diesem jeweils paarweise angeordnete Führungsstangen oder -walzen läuft.7. Device according to one of claims 1 to 6, characterized in that the web runs in the region of the knife on both sides of this and this pair of guide rods or rollers arranged in each case. 8. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Schlitten mit einem über einen Rand der Schlauchfolienbahn gleitenden Bügel versehen ist, der am Ende seines äußeren Schenkels mit einer drehbar gelagerten Scheibe versehen ist, in der das obere Ende des Messers gehaltert ist.8. Device according to one of claims 1 to 6, characterized in that the carriage is provided with a sliding over an edge of the tubular film web bracket, which is provided at the end of its outer leg with a rotatably mounted disc in which the upper end of the knife is supported. 9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß unterhalb des Messers auf der Messerachse ein Permanentmagnet angeordnet ist, der die aus magnetischem Material bestehende Scheibe mitnimmt.9. The device according to claim 8, characterized in that a permanent magnet is arranged below the knife on the knife axis, which takes the disk made of magnetic material. 10. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Drehantrieb des Messers von einem von der zweiten Steuerkurve-verschwenkten Hebel abgeleitet ist, der-schwenkbar auf dem den Schlitten verfahrenden Hebel gelagert ist.10. The device according to claim 1 or 2, characterized in that the rotary drive of the knife is derived from a lever pivoted by the second control cam, which is pivotally mounted on the lever moving the carriage. 11. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zwischen der Schneideinrichtung und der Querschweiß-Trenn-Einrichtung mindestens eine aus zwei zueinander parallelen Wendestangen bestehende Einrichtung zum Versetzen der zugehörigen Halbschlauchbahn parallel zu sich selbst nach außen vorgesehen ist.11. Device according to one of the preceding claims, characterized in that between the cutting device and the cross-welding separating device at least one device consisting of two mutually parallel turning bars for displacing the associated half-tube web is provided parallel to itself to the outside.
EP84110899A 1983-10-05 1984-09-12 Device for manufacturing carrying bags from synthetic material Expired EP0136602B1 (en)

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AT84110899T ATE31161T1 (en) 1983-10-05 1984-09-12 DEVICE FOR MAKING PLASTIC CARRYING BAGS.

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Application Number Priority Date Filing Date Title
DE3336231A DE3336231A1 (en) 1983-10-05 1983-10-05 DEVICE FOR PRODUCING PLASTIC CARRYING BAGS
DE3336231 1983-10-05

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EP0136602A1 true EP0136602A1 (en) 1985-04-10
EP0136602B1 EP0136602B1 (en) 1987-12-02

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JP (1) JPS6097838A (en)
AT (1) ATE31161T1 (en)
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DE (1) DE3336231A1 (en)
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CN110744862A (en) * 2019-10-30 2020-02-04 杭州柯宏网络科技有限公司 Packaging bag processing device capable of preventing bag from being folded towards middle during operation

Also Published As

Publication number Publication date
DK475984A (en) 1985-04-06
ATE31161T1 (en) 1987-12-15
EP0136602B1 (en) 1987-12-02
DE3336231C2 (en) 1990-03-22
US4605392A (en) 1986-08-12
DK161063B (en) 1991-05-27
DE3336231A1 (en) 1985-04-25
DK161063C (en) 1991-11-18
JPS6097838A (en) 1985-05-31
DK475984D0 (en) 1984-10-04
JPH0548740B2 (en) 1993-07-22
CA1237009A (en) 1988-05-24

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