EP3142952A1 - Device and method for adjusting the position of a packaging material path relative to a reference in a packaging machine - Google Patents

Device and method for adjusting the position of a packaging material path relative to a reference in a packaging machine

Info

Publication number
EP3142952A1
EP3142952A1 EP15716767.7A EP15716767A EP3142952A1 EP 3142952 A1 EP3142952 A1 EP 3142952A1 EP 15716767 A EP15716767 A EP 15716767A EP 3142952 A1 EP3142952 A1 EP 3142952A1
Authority
EP
European Patent Office
Prior art keywords
packaging material
material web
web
packaging
devices
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
EP15716767.7A
Other languages
German (de)
French (fr)
Other versions
EP3142952B1 (en
Inventor
Andre Philipp
He Li
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3142952A1 publication Critical patent/EP3142952A1/en
Application granted granted Critical
Publication of EP3142952B1 publication Critical patent/EP3142952B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/18—Registering sheets, blanks, or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B57/00—Automatic control, checking, warning, or safety devices
    • B65B57/02—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages
    • B65B57/04—Automatic control, checking, warning, or safety devices responsive to absence, presence, abnormal feed, or misplacement of binding or wrapping material, containers, or packages and operating to control, or to stop, the feed of such material, containers, or packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/0326—Controlling transverse register of web by moving the unwinding device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B65H23/038—Controlling transverse register of web by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/443—Moving, forwarding, guiding material by acting on surface of handled material
    • B65H2301/4432—Moving, forwarding, guiding material by acting on surface of handled material by means having an operating surface contacting only one face of the material, e.g. roller
    • B65H2301/44324—Rollers
    • B65H2301/443243—Rollers pivoting around an axis perpendicular to the plane of the material (especially when web is running in a U-loop)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/81—Packaging machines

Definitions

  • Packing material web in particular the web center of the packaging material web, to a
  • the invention relates to a method for adjusting the position of a
  • Packaging material web preferably by means of a device according to the invention and a packaging machine in the form of a tubular bag machine with a device according to the invention.
  • a device according to the preamble of claim 1 is known from DE 10 201 1 003 666 A1.
  • the device arranged in the feed region of a packaging material web in the region of a tubular bag machine comprises a device which moves the packaging material web by displacing the packaging material web in a direction transverse to the packaging material web
  • a device for adjusting the web center of a packaging material web is known in which the device has a plurality of deflection or transport rollers around which the packaging material web is guided.
  • the rollers are on a swing frame
  • Packaging material web in the region of a deflection roller by means of a pressing device to influence the transport direction of the packaging material web.
  • the packaging material web in the region of the (single) device in its conveying direction must be changed relatively strong, in particular the web center of the packaging material web with a reference point of
  • the present invention seeks to provide a device for adjusting the position of a
  • Packaging material web in particular the web center of the packaging material web, to a reference in a packaging machine according to the preamble of claim 1 such that at relatively low mechanical stress of the material of the packaging material as much as possible influence on the position or the web center of the packaging material to a reference of a
  • Packaging machine is enabled.
  • Direction and the second means for pivoting the packaging material web is formed about an axis perpendicular to the transport direction of the packaging material arranged axis.
  • Packaging material web further processing packaging machine arranged second device still correct, so that the packaging machine the
  • the first device is part of a carrier device in which the packaging material web is stored in the form of a packaging material roll.
  • the training of the first device is therefore
  • Carrier device can be adjusted by the first device in a wide range.
  • the second device comprises a pivotable about an axis rotary frame, and that a first distance between the two devices is greater than a second distance between the second device and a forming device of the packaging machine, in the region of the reference is arranged , In particular, by the relatively small second distance between the second device and the
  • Forming device is achieved a slight deviation of the web center for reference at the critical point of the packaging machine, since between the second device and the reference only a small conveying distance for the Packing material web is provided. Furthermore, it is made possible by a relatively large distance between the two devices that even with a relatively small change in the conveying direction of the packaging material web in the region of the first device due to the relatively large distance to the second device, the web center relatively strong in the area of the second device changes, so that the direction or position of the web center in the first device must be changed only relatively small.
  • a particularly preferred embodiment of the invention provides that between the two devices, a device for measuring in
  • Transverse direction of the packaging material web acting web tension is provided, and that a control device controls the two devices in dependence of the detected web tension of the packaging material web.
  • Training makes it possible, in particular, to control the two devices in such a way that the most uniform possible course of the web tension is achieved transversely to the conveying direction of the packaging material web or, overall, a particularly low load on the packaging material web.
  • Packaging machine a sensor system for detecting the position of the packaging material web is arranged.
  • the control device of the packaging machine then controls the two devices as a function of the detected position of the packaging material web.
  • the invention also includes a packaging machine in the form of a
  • the invention comprises a method for adjusting the position, in particular the web center of a packaging material web, to a reference in a packaging machine, preferably using a
  • Position of the packaging material web are provided, and a control device for Control of the two devices, which controls the two devices to achieve a desired position in response to a detected actual position of the packaging material web.
  • Packaging material web or relatively low stresses in the packaging material web it is provided that the control of the two devices takes place in dependence of a detected between the two devices web tension in the packaging material web.
  • the two devices each have a central position and two end positions, and if the control device, when the first or second device approaches an end position, drives the respective other device in such a way that the
  • the former can be moved back towards its middle position. This will especially avoid that, should one of the
  • Fig. 1 is a simplified plan view of a packaging machine in the form of a tubular bag machine with an inventive
  • FIG. 3b flowcharts for explaining the different operating modes.
  • FIGs. 1 and 2 is a packaging machine in the form of a
  • Tubular bag machine 100 shown.
  • a mold and filling tube 101 which is enclosed by a forming shoulder 102, can be seen.
  • Forming shoulder 102 is used to form a packaging material tube from a packaging material web 1.
  • the packaging material web 1 is, in particular, a heat-sealable packaging material web 1 consisting of plastic material, but it is also conceivable, for example, with a glue layer coated paper webs 1 consisting of paper. It is essential that the web center 2 of the packaging material web 1 must be aligned with the forming shoulder 102 for the correct shaping of the packaging material hose, from which filled bag packages are produced. In the illustrated embodiment, it is assumed that the web center 2 of the packaging material web 1 centered to the forming shoulder 102 and the
  • Form and fill tube 101 must be aligned, which is represented by the reference line 103.
  • the packaging material web 1 is stored in the form of a packaging material roll and rotatably mounted on a support means 15 in a horizontal direction.
  • a support means 15 for example by means of transport rollers 16 to 18 shown in FIG. 1, transport of the packaging material web 1 in the direction of the forming shoulder 102 is made possible or facilitated.
  • the tubular bag machine 100 is equipped with a device 10, which makes it possible to position the web center 2 of the packaging material web 1 to the reference line 103 or align.
  • the device 10 comprises a first device 21, which by the
  • Carrier device 15 is realized.
  • the first device 21 has an adjustment drive, not shown, which makes it possible to
  • the first device 21 comprises at least one first sensor 24, for example, detects the one web edge 3, 3 'of the packaging material web 1, from which a control device 50 in knowledge of the width of
  • the device 10 at a distance A- ⁇ to the first device 21, a second device 26, which has a rotating frame 27 with conveying or
  • Has pulleys which serves to promote the packaging material web 1. It is essential that the rotating frame 27 is pivotally mounted in the direction of the double arrow 29 about an axis 28 which is perpendicular to the plane of the drawing of FIG.
  • the second device 26 is also coupled to the control device 50 in order on the one hand to supply the control device 50 with the position of the second device 26 or its angular position as an input value, and on the other hand by the control device 50 to drive the rotary frame 27 in the axis 28 Position in a desired position.
  • the second device 26 is located at a distance A 2 to the forming shoulder 102, which in contrast to the representation of FIGS. 1 and 2 is substantially smaller than the distance A- ⁇ between the two devices 21, 26th
  • a sensor system 30 with web edge sensors 31, 32 is provided between the second device 26 and the forming shoulder 102, the signals of which are also supplied to the control device 50 as input values.
  • a deflection roller 33 which feeds the packaging material web 1 to the forming shoulder 102, is also shown by way of example.
  • Umlenkrolle 33 nor a variety of other deflection or transport rollers may have, which are not shown for the sake of simplicity.
  • the transport of the packaging material web 1 from the carrier device 15 to the forming shoulder 102 can take place either continuously or clocked, or in a mixed form, wherein in a partial area between the carrier device 15 and the forming shoulder 102 a buffer area with so-called Dancer rollers is arranged, which allows a balance between a cyclic and a continuous promotion of the packaging material web 1. Additionally it is optionally provided that in the area between the two
  • Means 21 and 26 means 35 for detecting
  • Material properties of the packaging material web 1 is arranged.
  • a tension profile of the web tension of the packaging material web 1 can be determined transversely to the transport direction 23 of the packaging material web 1.
  • the device 10 described so far for adjusting the web center 2 of the packaging material web 1 to the reference line 103 of the tubular bag machine 100 can be operated in various operating modes.
  • a first mode of operation will be explained, in which by the solid
  • the position of the packaging material web 1 on the carrier device 15 is first determined by means of the at least one first sensor 24, and then (with knowledge of the width of the packaging material web 1) the adjustably arranged carrier device 15 or the first Device 21 controlled by the control device 50 such that the packaging material web 1 is moved in the illustrated embodiment in the drawing plane of Fig. 1 from right to left until the actual position of the packaging material web 1 coincides with the desired position, in which the web center. 2 aligned with the reference line 103. Aligning the web center 2, 2 'with the reference line 103 takes place as a function of the web speed of the packaging material web 1 and further, packaging-specific properties.
  • materials of the packaging material web 1 can cause large so-called bow errors which ensure that the web center 2, 2 'of the packaging material web 1 in the region of the carrier device 15 coincides with the desired position (this means that the packaging material roll located on the carrier device 15 is centered is arranged with respect to the reference line 103), the web center 2, 2 'at the forming shoulder 102 but may still have a deviation a.
  • Deviation a, detected by the sensor system 30, can be quickly compensated for by the second device 26, which is located at a relatively small distance from the forming shoulder 102, by pivoting the second device 26 in one of the two directions of the double arrow 29.
  • FIG. 3 a the variation of the web center 2 'to the referenced web center 2 (curve Y) is shown by the course of the curve X over the time t. Furthermore, it can be seen by the curve Z, the course of the control signal for the first device 21. In particular, it can be seen that for the positioning described so far, the web center 2 to the reference line 103, in principle, only the first
  • the compensation of the mentioned bow error of the packaging material web 1 is basically compensated for solely by the first device 21, but is favored or accelerated by the second device 26.
  • Production in an already established state of the packaging material web 1 in the already aligned state of the web center 2 to the reference line 103 may occur. Since the second device 26 is arranged at a relatively small distance A 2 to the forming shoulder 102 and to the reference line 103 on the forming shoulder 102, it may happen, inter alia, that the second
  • Fig. 3b Operating mode is illustrated by the Fig. 3b. It is shown that the actual position and the desired position of the web center 2 (curve X) is aligned with the reference line 103 during the entire time. By the curve Y, the control signal for the first device 21 is illustrated, which after a certain time, a return of the second device 26 allows in its center position, which is illustrated by the curve Z (control signal of the second device 26).
  • the two devices 21, 26 are controlled as a function of the web tension profile detected by the device 35 such that certain stresses are not exceeded transversely to the longitudinal orientation of the packaging material web 1 in order to load the material of the packaging web 1 as little as possible.
  • the application of the device 10 should not be limited to tubular bag machines 100, but can also be used in other packaging machines. It can also be provided that when approaching the first device 21 to one of its lateral end positions in analogy to the mode explained in connection with FIGS. 2 and 3 b, the second device 26 is actuated such that the first device 21 again in the direction their middle position can be moved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)

Abstract

The invention relates to a device (10) for adjusting the position of a packaging material path (1, 1'), in particular the path center (2, 2') of the packaging material path (1, 1'), relative to a reference (103) in a packaging machine. According to the invention, two devices (21, 26) are provided for adjusting the position of the packaging material path (1, 1'), the first device (21) being designed to linearly move the packaging material path (1, 1') in a direction running perpendicularly to the transport direction (23) of the packaging material path (1, 1') and the second device (26) being designed to pivot the packaging material path (1, 1') about an axis (28) arranged perpendicularly to the transport direction (23) of the packaging material path (1, 1').

Description

Beschreibung Titel  Description title

VORRICHTUNG UND VERFAHREN ZUM EINSTELLEN DER POSITION EINER PACKSTOFFBAHN ZU EINER REFERENZ IN EINER VERPACKUNGSMASCHINE DEVICE AND METHOD FOR ADJUSTING THE POSITION OF A PACKAGE TRACK TO A REFERENCE IN A PACKAGING MACHINE

Stand der Technik Die Erfindung betrifft eine Vorrichtung zum Einstellen der Position einer PRIOR ART The invention relates to a device for adjusting the position of a

Packstoffbahn, insbesondere der Bahnmitte der Packstoffbahn, zu einer  Packing material web, in particular the web center of the packaging material web, to a

Referenz in einer Verpackungsmaschine nach dem Oberbegriff des Anspruchs 1. Ferner betrifft die Erfindung ein Verfahren zum Einstellen der Position einer  Reference in a packaging machine according to the preamble of claim 1. Furthermore, the invention relates to a method for adjusting the position of a

Packstoffbahn, vorzugsweise mittels einer erfindungsgemäßen Vorrichtung und eine Verpackungsmaschine in Form einer Schlauchbeutelmaschine mit einer erfindungsgemäßen Vorrichtung.  Packaging material web, preferably by means of a device according to the invention and a packaging machine in the form of a tubular bag machine with a device according to the invention.

Eine Vorrichtung nach dem Oberbegriff des Anspruchs 1 ist aus der DE 10 201 1 003 666 A1 bekannt. Die im Zuführbereich einer Packstoffbahn im Bereich einer Schlauchbeutelmaschine angeordnete Vorrichtung umfasst eine Einrichtung, die die Packstoffbahn durch Verschieben der Packstoffbahn in einer quer zur A device according to the preamble of claim 1 is known from DE 10 201 1 003 666 A1. The device arranged in the feed region of a packaging material web in the region of a tubular bag machine comprises a device which moves the packaging material web by displacing the packaging material web in a direction transverse to the packaging material web

Transportrichtung der Packstoffbahn verlaufenden Richtung mit dem Formrohr der Schlauchbeutelmaschine ausgerichtet. Weiterhin ist aus der DE 44 44 228 C2 eine Einrichtung zum Einstellen der Bahnmitte einer Packstoffbahn bekannt, bei der die Einrichtung mehrere Umlenk- bzw. Transportrollen aufweist, um die die Packstoffbahn geführt ist. Die Rollen sind an einem Schwenkrahmen  Direction of transport of the packaging material web extending direction aligned with the forming tube of the tubular bag machine. Furthermore, from DE 44 44 228 C2 a device for adjusting the web center of a packaging material web is known in which the device has a plurality of deflection or transport rollers around which the packaging material web is guided. The rollers are on a swing frame

angeordnet, der um eine senkrecht zur Transportrichtung der Packstoffbahn angeordneten Achse schwenkbar ist und dadurch die Richtung der geförderten Packstoffbahn beeinflusst. Zuletzt ist es aus der DE 10 2007 003 727 B4  arranged, which is pivotable about an axis perpendicular to the transport direction of the packaging material arranged axis and thereby influences the direction of the conveyed packaging material web. Finally, it is from DE 10 2007 003 727 B4

bekannt, durch gezieltes Ausüben eines Drucks auf die Oberfläche einer  known, by deliberately exerting a pressure on the surface of a

Packstoffbahn im Bereich einer Umlenkrolle mittels einer Andrückeinrichtung die Transportrichtung der Packstoffbahn zu beeinflussen.  Packaging material web in the region of a deflection roller by means of a pressing device to influence the transport direction of the packaging material web.

Den aus dem Stand der Technik bekannten Vorrichtungen ist gemeinsam, dass diese lediglich eine einzige Einrichtung zur Beeinflussung der Position der The devices known from the prior art have in common that they only a single device for influencing the position of the

Packstoffbahn bzw. deren Bahnmitte aufweisen. Dies hat zur Folge, dass, je nach Toleranzlage der zugeförderten Packstoffbahn sowie sonstigen Have packaging material web or the center of the web. This has the consequence that, ever according to the tolerance of the conveyed packaging material web as well as other

Umständen, die Packstoffbahn im Bereich der (einzigen) Einrichtung in ihrer Förderrichtung relativ stark verändert werden muss, um insbesondere die Bahnmitte der Packstoffbahn mit einem Referenzpunkt der Circumstances, the packaging material web in the region of the (single) device in its conveying direction must be changed relatively strong, in particular the web center of the packaging material web with a reference point of

Verpackungsmaschine auszurichten. Dies bedeutet eine relativ hohe Align packaging machine. This means a relatively high

mechanische Belastung des Materials der Packstoffbahn, was vor allem bei relativ dünnen Verpackungsmaterialen kritisch sein kann, so dass die Gefahr des Reißens der Packstoffbahn besteht. Darüber hinaus erfordert das Vorsehen lediglich einer einzigen Einrichtung zur Beeinflussung der Richtung der mechanical stress on the material of the packaging material web, which may be critical especially for relatively thin packaging materials, so that there is a risk of tearing the packaging material web. Moreover, the provision of only a single device for influencing the direction of the requires

Packstoffbahn eine sorgfältige Ausrichtung bzw. Anordnung der restlichen, diePacking material a careful alignment or arrangement of the remaining, the

Position der Packstoffbahn in der Verpackungsmaschine beeinflussenden Teile bzw. Einrichtungen. Position of the packaging material web in the packaging machine influencing parts or facilities.

Offenbarung der Erfindung Disclosure of the invention

Ausgehend von dem dargestellten Stand der Technik liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung zum Einstellen der Position einer Based on the illustrated prior art, the present invention seeks to provide a device for adjusting the position of a

Packstoffbahn, insbesondere der Bahnmitte der Packstoffbahn, zu einer Referenz in einer Verpackungsmaschine nach dem Oberbegriff des Anspruchs 1 derart weiterzubilden, dass bei relativ geringer mechanischer Belastung des Materials der Packstoffbahn eine möglichst große Beeinflussung der Position bzw. der Bahnmitte der Packstoffbahn zu einer Referenz einer Packaging material web, in particular the web center of the packaging material web, to a reference in a packaging machine according to the preamble of claim 1 such that at relatively low mechanical stress of the material of the packaging material as much as possible influence on the position or the web center of the packaging material to a reference of a

Verpackungsmaschine ermöglicht wird. Insbesondere sollen sich auch hinsichtlich der Beeinflussung der Bahnmitte kritische Packstoffe auf einerPackaging machine is enabled. In particular, should also be in terms of influencing the web center critical packaging on a

Verpackungsmaschine relativ einfach handhaben lassen. Handling packaging machine relatively easy.

Diese Aufgabe wird erfindungsgemäß bei einer Vorrichtung mit den Merkmalen des Anspruchs 1 dadurch gelöst, dass zwei Einrichtungen zum Einstellen der Position vorgesehen sind, wobei die erste Einrichtung zum linearen Verschieben der Packstoffbahn in einer senkrecht zur Transportrichtung verlaufenden This object is achieved in a device with the features of claim 1, characterized in that two means are provided for adjusting the position, wherein the first means for linear displacement of the packaging material web extending in a direction perpendicular to the transport direction

Richtung und die zweite Einrichtung zum Schwenken der Packstoffbahn um eine senkrecht zur Transportrichtung der Packstoffbahn angeordnete Achse ausgebildet ist. Das Vorsehen zweier separater Einrichtungen zum Einstellen bzw. Beeinflussen insbesondere der Bahnmitte der Packstoffbahn ermöglicht es, die benötigte Richtungsänderung der Packstoffbahn im Bereich jeder einzelnen Einrichtung relativ gering zu wählen, wodurch sich eine relativ geringe mechanische Belastung auf das Material der Packstoffbahn ergibt. Darüber hinaus lassen sich während der Förderung der Packstoffbahn entlang deren Transportwegs auftretende Störfaktoren, die zu einer Abweichung der Ist- Position von einer Soll-Position insbesondere der Bahnmitte der Packstoffbahn führen, durch die üblicherweise in relativ geringem Abstand zur die Direction and the second means for pivoting the packaging material web is formed about an axis perpendicular to the transport direction of the packaging material arranged axis. The provision of two separate means for adjusting or influencing in particular the web center of the packaging material web makes it possible to achieve the required change in direction of the packaging material web in the area of each individual To select device relatively low, resulting in a relatively low mechanical stress on the material of the packaging material web. In addition, can be during the promotion of the packaging material along their transport path occurring confounding factors that lead to a deviation of the actual position of a target position, in particular the web center of the packaging material, by usually at a relatively small distance from the

Packstoffbahn weiterverarbeitenden Verpackungsmaschine angeordnete zweite Einrichtung noch korrigieren, so dass die Verpackungsmaschine die Packaging material web further processing packaging machine arranged second device still correct, so that the packaging machine the

Packstoffbahn vollständig beispielsweise zur Ausbildung von Verpackungen verwenden kann. Can fully use packaging material web, for example, to form packaging.

Vorteilhafte Weiterbildungen der erfindungsgemäßen Vorrichtung sind in den Unteransprüchen aufgeführt. Advantageous developments of the device according to the invention are listed in the subclaims.

Besonders bevorzugt ist es, wenn die erste Einrichtung Bestandteil einer Trägereinrichtung ist, in der die Packstoffbahn in Form einer Packstoffrolle bevorratet ist. Die Ausbildung der ersten Einrichtung ist daher It is particularly preferred if the first device is part of a carrier device in which the packaging material web is stored in the form of a packaging material roll. The training of the first device is therefore

vorrichtungstechnisch relativ einfach, da die bereits üblicherweise vorgesehene Trägereinrichtung zum Bevorraten der Packstoffbahn lediglich in einer quer zur Transportrichtung der Packstoffbahn angeordneten Richtung verschiebbar ausgebildet werden muss, um die erste Einrichtung auszubilden. Darüber hinaus ermöglicht eine derartige Ausbildung der ersten Einrichtung, hinsichtlich der Positionierung der Packstoffrolle auf der Trägereinrichtung relativ große Device-related relatively simple, since the already usually provided support means for storing the packaging material web only in a transversely arranged to the transport direction of the packaging material web direction must be designed to be displaceable in order to form the first device. Moreover, such a design of the first device, with respect to the positioning of the packaging material roll on the carrier device allows relatively large

Toleranzen zuzulassen, da die Soll-Position der Packstoffbahn auf der Allow tolerances, since the desired position of the packaging material web on the

Trägereinrichtung durch die erste Einrichtung in einem weiten Rahmen eingestellt werden kann. Carrier device can be adjusted by the first device in a wide range.

Weiterhin ist es bevorzugt vorgesehen, wenn die zweite Einrichtung einen um eine Achse schwenkbaren Drehrahmen umfasst, und dass ein erster Abstand zwischen den beiden Einrichtungen größer ist als ein zweiter Abstand zwischen der zweiten Einrichtung und einer Formeinrichtung der Verpackungsmaschine, in deren Bereich die Referenz angeordnet ist. Insbesondere durch den relativ geringen zweiten Abstand zwischen der zweiten Einrichtung und der Furthermore, it is preferably provided that the second device comprises a pivotable about an axis rotary frame, and that a first distance between the two devices is greater than a second distance between the second device and a forming device of the packaging machine, in the region of the reference is arranged , In particular, by the relatively small second distance between the second device and the

Formeinrichtung wird eine geringe Abweichung der Bahnmitte zur Referenz an der kritischen Stelle der Verpackungsmaschine erzielt, da zwischen der zweiten Einrichtung und der Referenz lediglich noch eine geringe Förderstrecke für die Packstoffbahn vorgesehen ist. Weiterhin wird es durch einen relativ großen Abstand zwischen den beiden Einrichtungen ermöglicht, dass selbst bei einer relativ kleinen Änderung der Förderrichtung der Packstoffbahn im Bereich der ersten Einrichtung aufgrund des relativ großen Abstands zur zweiten Einrichtung sich die Bahnmitte bis in den Bereich der zweiten Einrichtung relativ stark ändert, so dass die Richtung bzw. Position der Bahnmitte in der ersten Einrichtung nur relativ gering verändert werden muss. Forming device is achieved a slight deviation of the web center for reference at the critical point of the packaging machine, since between the second device and the reference only a small conveying distance for the Packing material web is provided. Furthermore, it is made possible by a relatively large distance between the two devices that even with a relatively small change in the conveying direction of the packaging material web in the region of the first device due to the relatively large distance to the second device, the web center relatively strong in the area of the second device changes, so that the direction or position of the web center in the first device must be changed only relatively small.

Eine besonders bevorzugte Ausgestaltung der Erfindung sieht vor, dass zwischen den beiden Einrichtungen eine Einrichtung zur Messung von in A particularly preferred embodiment of the invention provides that between the two devices, a device for measuring in

Querrichtung der Packstoffbahn wirkenden Bahnspannungen vorgesehen ist, und dass eine Steuereinrichtung die beiden Einrichtungen in Abhängigkeit der erfassten Bahnspannungen der Packstoffbahn ansteuert. Eine derartige  Transverse direction of the packaging material web acting web tension is provided, and that a control device controls the two devices in dependence of the detected web tension of the packaging material web. Such

Ausbildung ermöglicht es insbesondere, die beiden Einrichtungen derart anzusteuern, dass ein möglichst gleichmäßiger Verlauf der Bahnspannung quer zur Förderrichtung der Packstoffbahn bzw. insgesamt gesehen eine besonders geringe Belastung der Packstoffbahn erzielt wird. Training makes it possible, in particular, to control the two devices in such a way that the most uniform possible course of the web tension is achieved transversely to the conveying direction of the packaging material web or, overall, a particularly low load on the packaging material web.

Zur Kontrolle der Ist-Position der Packstoffbahn ist es vorgesehen, dass zwischen der zweiten Einrichtung und der Formeinrichtung der To check the actual position of the packaging material web, it is provided that between the second device and the molding device of the

Verpackungsmaschine ein Sensorsystem zur Erfassung der Position der Packstoffbahn angeordnet ist. Die Steuereinrichtung der Verpackungsmaschine steuert dann die beiden Einrichtungen in Abhängigkeit von der erfassten Position der Packstoffbahn an.  Packaging machine, a sensor system for detecting the position of the packaging material web is arranged. The control device of the packaging machine then controls the two devices as a function of the detected position of the packaging material web.

Die Erfindung umfasst auch eine Verpackungsmaschine in Form einer The invention also includes a packaging machine in the form of a

Schlauchbeutelmaschine mit einer erfindungsgemäßen Vorrichtung zum Tubular bag machine with a device according to the invention for

Einstellen der Position, insbesondere der Bahnmitte der Packstoffbahn, zu einer Referenz. Setting the position, in particular the web center of the packaging material web, to a reference.

Weiterhin umfasst die Erfindung ein Verfahren zum Einstellen der Position, insbesondere der Bahnmitte einer Packstoffbahn, zu einer Referenz in einer Verpackungsmaschine, vorzugsweise unter Verwendung einer Furthermore, the invention comprises a method for adjusting the position, in particular the web center of a packaging material web, to a reference in a packaging machine, preferably using a

erfindungsgemäßen Vorrichtung, bei dem zwei, in Transportrichtung der Device according to the invention, in which two, in the transport direction of the

Packstoffbahn beabstandete separate Einrichtungen zur Beeinflussung derPacked web spaced separate means for influencing the

Position der Packstoffbahn vorgesehen sind, sowie eine Steuereinrichtung zur Ansteuerung der beiden Einrichtungen, die die beiden Einrichtungen zu Erzielung einer Soll-Position in Abhängigkeit einer erfassten Ist-Position der Packstoffbahn ansteuert. Zur Erzielung einer möglichst geringen mechanischen Belastung der Position of the packaging material web are provided, and a control device for Control of the two devices, which controls the two devices to achieve a desired position in response to a detected actual position of the packaging material web. To achieve the lowest possible mechanical load of

Packstoffbahn bzw. relativ geringen Spannungen in der Packstoffbahn ist es vorgesehen, dass die Ansteuerung der beiden Einrichtungen in Abhängigkeit einer zwischen den beiden Einrichtungen erfassten Bahnspannung in der Packstoffbahn erfolgt.  Packaging material web or relatively low stresses in the packaging material web, it is provided that the control of the two devices takes place in dependence of a detected between the two devices web tension in the packaging material web.

Ganz besonders bevorzugt ist es darüber hinaus, wenn die beiden Einrichtungen jeweils eine Mittelstellung und zwei Endstellungen aufweisen, und wenn die Steuereinrichtung bei der Annährung der ersten oder zweiten Einrichtung an eine Endstellung die jeweils andere Einrichtung derart ansteuert, dass die Moreover, it is particularly preferred if the two devices each have a central position and two end positions, and if the control device, when the first or second device approaches an end position, drives the respective other device in such a way that the

erstgenannte Einrichtung wieder in Richtung ihrer Mittelstellung bewegt werden kann. Dadurch wird insbesondere vermieden, dass, sollte sich eine der the former can be moved back towards its middle position. This will especially avoid that, should one of the

Einrichtungen bereits im Bereich ihrer Endstellung befinden, eine weitere zusätzliche Verstellung in Richtung der Endstellung nicht, oder nur noch bis zu einem gewissen Maß vorgenommen werden kann. Es handelt sich damit sozusagen um ein selbstausrichtendes System. Devices are already in the range of their final position, a further additional adjustment towards the end position is not, or can only be made to a certain extent. It is, so to speak, a self-aligning system.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung. Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing.

Diese zeigt in: This shows in:

Fig. 1 eine vereinfachte Draufsicht auf eine Verpackungsmaschine in Form einer Schlauchbeutelmaschine mit einer erfindungsgemäßen Fig. 1 is a simplified plan view of a packaging machine in the form of a tubular bag machine with an inventive

Vorrichtung zum Einstellen der Bahnmitte einer Packstoffbahn zu einem Device for adjusting the web center of a packaging material web to a

Referenzpunkt der Schlauchbeutelmaschine in einem ersten Reference point of the tubular bag machine in a first

Betriebsmodus, die Verpackungsmaschine gemäß Fig. 1 während eines zweiten Betriebsmodus und Fig. 3a Operating mode, the packaging machine of FIG. 1 during a second operating mode and Fig. 3a

und and

Fig. 3b Ablaufdiagramme zur Erläuterung der unterschiedlichen Betriebsmodi.  Fig. 3b flowcharts for explaining the different operating modes.

Gleiche Elemente bzw. Elemente mit gleicher Funktion sind in den Figuren mit den gleichen Bezugsziffern versehen. The same elements or elements with the same function are provided in the figures with the same reference numerals.

In den Fig. 1 und 2 ist eine Verpackungsmaschine in Form einer In Figs. 1 and 2 is a packaging machine in the form of a

Schlauchbeutelmaschine 100 dargestellt. Insbesondere erkennt man ein Formund Füllrohr 101 , das von einer Formschulter 102 umschlossen ist. Die Tubular bag machine 100 shown. In particular, a mold and filling tube 101, which is enclosed by a forming shoulder 102, can be seen. The

Formschulter 102 dient zum Formen eines Packstoffschlauchs aus einer Packstoffbahn 1. Bei der Packstoffbahn 1 handelt es sich insbesondere um eine heißsiegelbare, aus Kunststoffmaterial bestehende Packstoffbahn 1 , es sind jedoch auch beispielsweise mit einer Leimschicht beschichtete, aus Papier bestehende Packstoffbahnen 1 denkbar. Wesentlich ist, dass zur richtigen Formung des Packstoffschlauchs, aus dem befüllte Beutelpackungen hergestellt werden, die Bahnmitte 2 der Packstoffbahn 1 zur Formschulter 102 ausgerichtet werden muss. Im dargestellten Ausführungsbeispiel wird davon ausgegangen, dass die Bahnmitte 2 der Packstoffbahn 1 mittig zur Formschulter 102 bzw. zumForming shoulder 102 is used to form a packaging material tube from a packaging material web 1. The packaging material web 1 is, in particular, a heat-sealable packaging material web 1 consisting of plastic material, but it is also conceivable, for example, with a glue layer coated paper webs 1 consisting of paper. It is essential that the web center 2 of the packaging material web 1 must be aligned with the forming shoulder 102 for the correct shaping of the packaging material hose, from which filled bag packages are produced. In the illustrated embodiment, it is assumed that the web center 2 of the packaging material web 1 centered to the forming shoulder 102 and the

Form- und Füllrohr 101 ausgerichtet werden muss, was durch die Referenzlinie 103 dargestellt ist. Form and fill tube 101 must be aligned, which is represented by the reference line 103.

Die Packstoffbahn 1 ist in Form einer Packstoff rolle bevorratet und auf einer Trägereinrichtung 15 in einer horizontalen Richtung drehbar gelagert. Dadurch wird beim Abziehen der Packstoffbahn 1 , beispielsweise mittels in der Fig.1 dargestellter Transportrollen 16 bis 18, ein Transport der Packstoffbahn 1 in Richtung zur Formschulter 102 ermöglicht bzw. erleichtert. Erfindungsgemäß ist es vorgesehen, dass die Schlauchbeutelmaschine 100 mit einer Vorrichtung 10 ausgestattet ist, die es ermöglicht, die Bahnmitte 2 der Packstoffbahn 1 zur Referenzlinie 103 zu positionieren bzw. auszurichten. Hierzu umfasst die Vorrichtung 10 eine erste Einrichtung 21 , die durch die The packaging material web 1 is stored in the form of a packaging material roll and rotatably mounted on a support means 15 in a horizontal direction. As a result, during removal of the packaging material web 1, for example by means of transport rollers 16 to 18 shown in FIG. 1, transport of the packaging material web 1 in the direction of the forming shoulder 102 is made possible or facilitated. According to the invention it is provided that the tubular bag machine 100 is equipped with a device 10, which makes it possible to position the web center 2 of the packaging material web 1 to the reference line 103 or align. For this purpose, the device 10 comprises a first device 21, which by the

Trägereinrichtung 15 realisiert ist. Insbesondere weist die erste Einrichtung 21 einen nicht dargestellten Versteilantrieb auf, der es ermöglicht, die Carrier device 15 is realized. In particular, the first device 21 has an adjustment drive, not shown, which makes it possible to

Trägereinrichtung 15, und somit auch die auf der Trägereinrichtung 15 bevorratete Packstoffbahn 1 , in Richtung des Doppelpfeils 22 in einer senkrecht zur Transportrichtung 23 der Packstoffbahn 1 verlaufenden Richtung zu bewegen. Darüber hinaus umfasst die erste Einrichtung 21 zumindest einen ersten Sensor 24, der beispielsweise die eine Bahnkante 3, 3' der Packstoffbahn 1 erfasst, woraus eine Steuereinrichtung 50 in Kenntnis der Breite der Support means 15, and thus also on the support means 15th stockpiled packaging material web 1 to move in the direction of the double arrow 22 in a direction perpendicular to the transport direction 23 of the packaging material web 1 direction. In addition, the first device 21 comprises at least one first sensor 24, for example, detects the one web edge 3, 3 'of the packaging material web 1, from which a control device 50 in knowledge of the width of

Packstoffbahn 1 auf die genaue Position der Packstoffbahn 1 bzw. der Bahnmitte 2, 2' im Bereich der Trägereinrichtung 15 schließt. Packaging material web 1 on the exact position of the packaging material web 1 and the web center 2, 2 'in the region of the support means 15 closes.

Weiterhin umfasst die Vorrichtung 10 in einem Abstand A-ι zur ersten Einrichtung 21 eine zweite Einrichtung 26, die einen Drehrahmen 27 mit Förder- bzw. Furthermore, the device 10 at a distance A-ι to the first device 21, a second device 26, which has a rotating frame 27 with conveying or

Umlenkrollen aufweist, der zur Förderung der Packstoffbahn 1 dient. Wesentlich ist, dass der Drehrahmen 27 um eine Achse 28, die senkrecht zur Zeichenebene der Fig. 1 verläuft, in Richtung des Doppelpfeils 29 schwenkbar gelagert ist. Auch die zweite Einrichtung 26 ist mit der Steuereinrichtung 50 gekoppelt, um einerseits der Steuereinrichtung 50 die Position der zweiten Einrichtung 26 bzw. deren Winkellage als Eingangswert zuzuführen, und um andererseits von der Steuereinrichtung 50 angesteuert zu werden, um der Drehrahmen 27 in der Achse 28 in einer Soll-Position positionieren. Has pulleys, which serves to promote the packaging material web 1. It is essential that the rotating frame 27 is pivotally mounted in the direction of the double arrow 29 about an axis 28 which is perpendicular to the plane of the drawing of FIG. The second device 26 is also coupled to the control device 50 in order on the one hand to supply the control device 50 with the position of the second device 26 or its angular position as an input value, and on the other hand by the control device 50 to drive the rotary frame 27 in the axis 28 Position in a desired position.

Mittels beider Einrichtungen 21 , 26, die von der Steuereinrichtung 50 angesteuert werden bzw. mit dieser verbunden sind, lässt sich die Bahnmitte 2 der By means of both devices 21, 26, which are controlled by the control device 50 and are connected to this, the web center 2 of

Packstoffbahn 1 in Bezug zur Referenzlinie 103 der Formschulter 102 Packing material web 1 in relation to the reference line 103 of the forming shoulder 102

beeinflussen. Die zweite Einrichtung 26 befindet sich in einem Abstand A2 zur Formschulter 102, der im Gegensatz zur Darstellung der Fig. 1 und 2 wesentlich geringer ist als der Abstand A-ι zwischen den beiden Einrichtungen 21 , 26. influence. The second device 26 is located at a distance A 2 to the forming shoulder 102, which in contrast to the representation of FIGS. 1 and 2 is substantially smaller than the distance A-ι between the two devices 21, 26th

Weiterhin ist zwischen der zweiten Einrichtung 26 und der Formschulter 102 ein Sensorsystem 30 mit Bahnkantensensoren 31 , 32 vorgesehen, deren Signale ebenfalls der Steuereinrichtung 50 als Eingangswerte zugeführt werden. Furthermore, a sensor system 30 with web edge sensors 31, 32 is provided between the second device 26 and the forming shoulder 102, the signals of which are also supplied to the control device 50 as input values.

Zwischen dem Sensorsystem 30 und der Formschulter 102 ist darüber hinaus beispielhaft noch eine Umlenkrolle 33 dargestellt, die die Packstoffbahn 1 der Formschulter 102 zuführt. Between the sensor system 30 and the forming shoulder 102, a deflection roller 33, which feeds the packaging material web 1 to the forming shoulder 102, is also shown by way of example.

Ergänzend wird erwähnt, dass der Bereich zwischen der ersten Einrichtung 21 und der Formschulter 102 neben den Transportrollen 16 bis 18 und der In addition, it is mentioned that the area between the first device 21 and the forming shoulder 102 next to the transport rollers 16 to 18 and the

Umlenkrolle 33 noch eine Vielzahl von weiteren Umlenk- bzw. Transportrollen aufweisen kann, die lediglich der Einfachheit halber nicht dargestellt sind. Umlenkrolle 33 nor a variety of other deflection or transport rollers may have, which are not shown for the sake of simplicity.

Darüber hinaus wird erwähnt, dass der Transport der Packstoffbahn 1 von der Trägereinrichtung 15 zur Formschulter 102 entweder kontinuierlich, oder aber getaktet, oder aber in einer Mischform erfolgen kann, bei der in einem Teilbereich zwischen der Trägereinrichtung 15 und der Formschulter 102 ein Pufferbereich mit sogenannten Tänzerrollen angeordnet ist, der einen Ausgleich zwischen einer taktweisen und einer kontinuierlichen Förderung der Packstoffbahn 1 ermöglicht. Zusätzlich ist es optional vorgesehen, dass im Bereich zwischen den beidenIn addition, it is mentioned that the transport of the packaging material web 1 from the carrier device 15 to the forming shoulder 102 can take place either continuously or clocked, or in a mixed form, wherein in a partial area between the carrier device 15 and the forming shoulder 102 a buffer area with so-called Dancer rollers is arranged, which allows a balance between a cyclic and a continuous promotion of the packaging material web 1. Additionally it is optionally provided that in the area between the two

Einrichtungen 21 und 26 eine Einrichtung 35 zur Erfassung von Means 21 and 26 means 35 for detecting

Materialeigenschaften der Packstoffbahn 1 angeordnet ist. Insbesondere lässt sich mittels der Einrichtung 35, die ebenfalls mit der Steuereinrichtung 50 verbunden ist, ein Spannungsprofil der Bahnspannungen der Packstoffbahn 1 quer zur Transportrichtung 23 der Packstoffbahn 1 ermitteln. Material properties of the packaging material web 1 is arranged. In particular, by means of the device 35, which is likewise connected to the control device 50, a tension profile of the web tension of the packaging material web 1 can be determined transversely to the transport direction 23 of the packaging material web 1.

Die soweit beschriebene Vorrichtung 10 zum Einstellen der Bahnmitte 2 der Packstoffbahn 1 zu der Referenzlinie 103 der Schlauchbeutelmaschine 100 kann in verschiedenen Betriebsmodi betrieben werden. Mit Blick auf die Fig. 1 und 3a wird ein erster Betriebsmodus erläutert, bei dem durch die durchgezogenenThe device 10 described so far for adjusting the web center 2 of the packaging material web 1 to the reference line 103 of the tubular bag machine 100 can be operated in various operating modes. With reference to Figs. 1 and 3a, a first mode of operation will be explained, in which by the solid

Linien der Bahnkanten 3 und 4 der zu erreichende Endzustand der Position der Packstoffbahn 1 dargestellt ist, bei der die Bahnmitte 2 zur Referenzlinie 103 ausgerichtet ist. Durch die gestrichelte Darstellung der Packstoffbahn V ist ein Anfangszustand mit Bahnkanten 3', 4' dargestellt, bei der zwischen der Lines of the web edges 3 and 4 of the reaching end state of the position of the packaging material web 1 is shown, in which the web center 2 is aligned with the reference line 103. The dashed representation of the packaging material web V shows an initial state with web edges 3 ', 4', in which between the

Bahnmitte 2 im Endzustand und der Bahnmitte 2' im Anfangszustand eine seitliche Abweichung a vorhanden ist. Um aus dem Anfangszustand in den Endzustand zu gelangen, wird zunächst mittels des wenigstens einen ersten Sensors 24 die Position der Packstoffbahn 1 auf der Trägereinrichtung 15 ermittelt, und anschließend (in Kenntnis der Breite der Packstoffbahn 1 ) die verstellbar angeordnete Trägereinrichtung 15 bzw. die erste Einrichtung 21 durch die Steuereinrichtung 50 derart angesteuert, dass die Packstoffbahn 1 im dargestellten Ausführungsbeispiel in der Zeichenebene der Fig. 1 von rechts nach links bewegt wird, bis die Ist-Position der Packstoffbahn 1 mit der Soll- Position übereinstimmt, bei der die Bahnmitte 2 mit der Referenzlinie 103 ausgerichtet ist. Das Ausrichten der Bahnmitte 2, 2' mit der Referenzlinie 103 erfolgt dabei in Abhängigkeit von der Bahngeschwindigkeit der Packstoffbahn 1 und weiteren, verpackungsspezifischen Eigenschaften. Bahnmitte 2 in the final state and the web center 2 'in the initial state, a lateral deviation a is present. In order to reach the final state from the initial state, the position of the packaging material web 1 on the carrier device 15 is first determined by means of the at least one first sensor 24, and then (with knowledge of the width of the packaging material web 1) the adjustably arranged carrier device 15 or the first Device 21 controlled by the control device 50 such that the packaging material web 1 is moved in the illustrated embodiment in the drawing plane of Fig. 1 from right to left until the actual position of the packaging material web 1 coincides with the desired position, in which the web center. 2 aligned with the reference line 103. Aligning the web center 2, 2 'with the reference line 103 takes place as a function of the web speed of the packaging material web 1 and further, packaging-specific properties.

Insbesondere bei qualitativ bezüglich des Transports relativ schlechten Especially with regard to qualitatively relative to the transport relatively bad

Materialen der Packstoffbahn 1 können jedoch große sogenannte Bogenfehler auftreten, die dafür sorgen, dass zwar die Bahnmitte 2, 2' der Packstoffbahn 1 im Bereich der Trägereinrichtung 15 mit der Soll-Position übereinstimmt (das bedeutet, dass die auf der Trägereinrichtung 15 befindliche Packmittelrolle mittig in Bezug zur Referenzlinie 103 angeordnet ist), die Bahnmitte 2, 2' an der Formschulter 102 aber dennoch eine Abweichung a aufweisen kann. DieseHowever, materials of the packaging material web 1 can cause large so-called bow errors which ensure that the web center 2, 2 'of the packaging material web 1 in the region of the carrier device 15 coincides with the desired position (this means that the packaging material roll located on the carrier device 15 is centered is arranged with respect to the reference line 103), the web center 2, 2 'at the forming shoulder 102 but may still have a deviation a. These

Abweichung a, die mittels des Sensorsystems 30 erfasst wird, kann durch die zweite Einrichtung 26, die sich im relativ geringem Abstand zur Formschulter 102 befindet, rasch ausgeglichen werden, indem die zweite Einrichtung 26 in einer der beiden Richtungen des Doppelpfeils 29 geschwenkt wird. Deviation a, detected by the sensor system 30, can be quickly compensated for by the second device 26, which is located at a relatively small distance from the forming shoulder 102, by pivoting the second device 26 in one of the two directions of the double arrow 29.

In der Fig. 3a ist durch den Verlauf der Kurve X über der Zeit t die Veränderung der Bahnmitte 2' zur referenzierten Bahnmitte 2 (Kurve Y) dargestellt. Ferner erkennt man durch die Kurve Z den Verlauf des Steuersignals für die erste Einrichtung 21. Insbesondere erkennt man, dass für das soweit beschriebene Positionieren der Bahnmitte 2 zur Referenzlinie 103 grundsätzlich nur die ersteIn FIG. 3 a, the variation of the web center 2 'to the referenced web center 2 (curve Y) is shown by the course of the curve X over the time t. Furthermore, it can be seen by the curve Z, the course of the control signal for the first device 21. In particular, it can be seen that for the positioning described so far, the web center 2 to the reference line 103, in principle, only the first

Einrichtung 21 erforderlich ist. Auch das Ausgleichen der angesprochenen Bogenfehler der Packmittelbahn 1 ist grundsätzlich alleine durch die erste Einrichtung 21 ausgleichbar, wird jedoch durch die zweite Einrichtung 26 begünstigt bzw. beschleunigt. Device 21 is required. Also, the compensation of the mentioned bow error of the packaging material web 1 is basically compensated for solely by the first device 21, but is favored or accelerated by the second device 26.

In der Fig. 2 ist ein zweiter Betriebsmodus dargestellt, der während der 2, a second operating mode is shown, which during the

Produktion in einem bereits eingerichteten Zustand der Packstoffbahn 1 beim bereits ausgerichteten Zustand der Bahnmitte 2 zur Referenzlinie 103 auftreten kann. Da die zweite Einrichtung 26 in einem relativ geringem Abstand A2 zur Formschulter 102 bzw. zur Referenzlinie 103 an der Formschulter 102 angeordnet ist, kann es unter anderem dazu kommen, dass die zweite Production in an already established state of the packaging material web 1 in the already aligned state of the web center 2 to the reference line 103 may occur. Since the second device 26 is arranged at a relatively small distance A 2 to the forming shoulder 102 and to the reference line 103 on the forming shoulder 102, it may happen, inter alia, that the second

Einrichtung 26 bereits derart stark um die Achse 28 geschwenkt ist, dass sich diese nahe am Rand ihres Arbeitsbereiches, was durch die gestrichelte Device 26 is already pivoted so strongly about the axis 28, that these close to the edge of their work area, what by the dashed

Darstellung des Drehrahmens 27 dargestellt sein soll, befindet. In diesem Fall ist eine weitere Korrektur der Bahnmitte 2 bei einer von der Sensoreinrichtung 30 festgestellten Abweichung a in besagte Richtung nicht mehr möglich. Es ist daher zur Vermeidung von Produktionspausen wünschenswert, dass die zweite Einrichtung 26 aus der gestrichelten Darstellung wieder in eine mittlere Position (zurück-)geschwenkt wird, aus der heraus Abweichungen a der Bahnmitte 2 in Bezug zur Referenzlinie 103 in beide Richtungen durch die zweite Einrichtung 26 ausgeglichen werden können. Dies erfolgt dadurch, dass die erste Einrichtung 21 die Trägereinrichtung 15 aus der durch die gestrichelte Darstellung ersichtlichen Position nach rechts verschiebt, so dass die zweite Einrichtung 26 bezüglich ihres Winkels zur Achse 28 in Richtung ihrer mittleren Position Representation of the rotating frame 27 should be shown, is located. In this case, a further correction of the web center 2 is no longer possible with a deviation a detected by the sensor device 30 in said direction. It is Therefore, in order to avoid pauses in production, it is desirable for the second means 26 to be (re) pivoted from the dashed representation back to a middle position, from which deviations a of the web center 2 with respect to the reference line 103 are compensated in both directions by the second means 26 can be. This is done by the first means 21 shifting the carrier means 15 to the right from the position shown by the dashed line so that the second means 26 move in the direction of their central position with respect to their angle to the axis 28

zurückgeschwenkt werden kann. Die Funktionsweise dieses zweiten can be swung back. The operation of this second

Betriebsmodus ist durch die Fig. 3b verdeutlicht. Darin ist dargestellt, dass die Ist-Position und die Soll-Position der Bahnmitte 2 (Kurve X) während der gesamten Zeit mit der Referenzlinie 103 ausgerichtet ist. Durch die Kurve Y wird das Steuersignal für die erste Einrichtung 21 verdeutlicht, welches nach einer gewissen Zeit ein Rückführen der zweiten Einrichtung 26 in ihre Mittelposition ermöglicht, was durch die Kurve Z (Steuersignal der zweiten Einrichtung 26) verdeutlicht wird. Operating mode is illustrated by the Fig. 3b. It is shown that the actual position and the desired position of the web center 2 (curve X) is aligned with the reference line 103 during the entire time. By the curve Y, the control signal for the first device 21 is illustrated, which after a certain time, a return of the second device 26 allows in its center position, which is illustrated by the curve Z (control signal of the second device 26).

Die soweit beschriebene Vorrichtung 10 kann in vielfältiger Art und Weise abgewandelt bzw. modifiziert werden, ohne vom Erfindungsgedanken The device 10 described so far can be modified or modified in many ways without departing from the spirit of the invention

abzuweichen. Insbesondere ist es auch denkbar, die beiden Einrichtung 21 , 26 in Abhängigkeit des von der Einrichtung 35 erfassten Bahnspannungsverlaufs derart anzusteuern, dass quer zur Längsausrichtung der Packstoffbahn 1 in dieser bestimmte Spannungen nicht überschritten werden, um das Material der Packstoffbahn 1 möglichst wenig zu belasten. Weiterhin soll die Anwendung der Vorrichtung 10 nicht auf Schlauchbeutelmaschinen 100 begrenzt sein, sondern kann auch bei anderen Verpackungsmaschinen verwendet werden. Auch kann es vorgesehen sein, dass bei einer Annäherung der ersten Einrichtung 21 an eine ihrer seitlichen Endpositionen in Analogie zu dem im Zusammenhang mit der Fig. 2 und 3b erläuterten Modus die zweite Einrichtung 26 derart angesteuert wird, dass die erste Einrichtung 21 wieder in Richtung ihrer Mittelposition bewegt werden kann. departing. In particular, it is also conceivable to control the two devices 21, 26 as a function of the web tension profile detected by the device 35 such that certain stresses are not exceeded transversely to the longitudinal orientation of the packaging material web 1 in order to load the material of the packaging web 1 as little as possible. Furthermore, the application of the device 10 should not be limited to tubular bag machines 100, but can also be used in other packaging machines. It can also be provided that when approaching the first device 21 to one of its lateral end positions in analogy to the mode explained in connection with FIGS. 2 and 3 b, the second device 26 is actuated such that the first device 21 again in the direction their middle position can be moved.

Claims

Ansprüche claims 1 . Vorrichtung (10) zum Einstellen der Position einer Packstoffbahn (1 , 1 '), insbesondere der Bahnmitte (2, 2') der Packstoffbahn (1 , 1 '), zu einer Referenz (103) in einer Verpackungsmaschine, dadurch gekennzeichnet, dass zwei Einrichtungen (21 , 26) zum Einstellen der Position der 1 . Device (10) for adjusting the position of a packaging material web (1, 1 '), in particular the web center (2, 2') of the packaging material web (1, 1 '), to a reference (103) in a packaging machine, characterized in that two Means (21, 26) for adjusting the position of Packstoffbahn (1 , 1 ') vorgesehen sind, wobei die erste Einrichtung (21 ) zum linearen Verschieben der Packstoffbahn (1 , 1 ') in einer senkrecht zur Transportrichtung (23) der Packstoffbahn (1 , 1 ') verlaufenden Richtung und die zweite Einrichtung (26) zum Schwenken der Packstoffbahn (1 , 1 ') um eine senkrecht zur Transportrichtung (23) der Packstoffbahn (1 , 1 ') angeordnete Achse (28) ausgebildet ist.  Packing material web (1, 1 ') are provided, wherein the first means (21) for linear displacement of the packaging material web (1, 1') in a direction perpendicular to the transport direction (23) of the packaging material (1, 1 ') extending direction and the second device (26) for pivoting the packaging material web (1, 1 ') around a perpendicular to the transport direction (23) of the packaging material web (1, 1') arranged axis (28) is formed. 2. Vorrichtung nach Anspruch 1 , 2. Apparatus according to claim 1, dadurch gekennzeichnet,  characterized, dass die erste Einrichtung (21 ) Bestandteil einer Trägereinrichtung (15) ist, in der die Packstoffbahn (1 ) in Form einer Packstoffrolle bevorratet ist.  in that the first device (21) is part of a carrier device (15) in which the packaging material web (1) is stored in the form of a packaging material roll. 3. Vorrichtung nach Anspruch 1 oder 2, 3. Apparatus according to claim 1 or 2, dadurch gekennzeichnet,  characterized, dass die zweite Einrichtung (26) einen um die Achse (28) schwenkbaren Drehrahmen (27) umfasst, und dass ein erster Abstand (A-i) zwischen den beiden Einrichtungen (21 , 26) größer ist als ein zweiter Abstand (A2) zwischen der zweiten Einrichtung (26) und einer Formeinrichtung (102) der Verpackungsmaschine, in deren Bereich die Referenz (103) angeordnet ist. in that the second device (26) comprises a pivotable about the axis (28) pivotal frame (27), and that a first distance (Ai) between the two devices (21, 26) is greater than a second distance (A 2 ) between the second device (26) and a forming device (102) of the packaging machine, in whose region the reference (103) is arranged. 4. Vorrichtung nach einem der Ansprüche 1 bis 3, 4. Device according to one of claims 1 to 3, dadurch gekennzeichnet,  characterized, dass zwischen den beiden Einrichtungen (21 , 26) eine Einrichtung (35) zur Messung von in Querrichtung der Packstoffbahn (1 , 1 ') wirkenden  in that a device (35) for measuring transversely of the packaging material web (1, 1 ') acts between the two devices (21, 26) Bahnspannungen vorgesehen ist, und dass eine Steuereinrichtung (50) die beiden Einrichtungen (21 , 26) in Abhängigkeit der erfassten Web tension is provided, and that a control device (50) the both devices (21, 26) depending on the detected Bahnspannungen der Packstoffbahn (1 , 1 ') ansteuert. Web tension of the packaging material web (1, 1 ') controls. Vorrichtung nach Anspruch 3 oder 4, Apparatus according to claim 3 or 4, dadurch gekennzeichnet, characterized, dass zwischen der zweiten Einrichtung (26) und der Formeinrichtung (102) ein Sensorsystem (30) zur Erfassung der Position der Packstoffbahn (1 , 1 ') angeordnet ist. in that a sensor system (30) for detecting the position of the packaging material web (1, 1 ') is arranged between the second device (26) and the shaping device (102). Verpackungsmaschine in Form einer Schlauchbeutelmaschine (100) mit einer Vorrichtung (10) nach einem der Ansprüche 1 bis 5. Packaging machine in the form of a tubular bag machine (100) with a device (10) according to one of claims 1 to 5. Verfahren zum Einstellen der Position, insbesondere der Bahnmitte (2, 2') einer Packstoffbahn (1 , 1 '), zu einer Referenz (103) in einer Method for adjusting the position, in particular the web center (2, 2 ') of a packaging material web (1, 1'), to a reference (103) in one Verpackungsmaschine, vorzugsweise mittels einer Vorrichtung (10) nach einem der Ansprüche 1 bis 5, bei dem zwei, in Transportrichtung (23) der Packstoffbahn (1 , 1 ') beabstandete separate Einrichtungen (21 , 26) zur Beeinflussung der Position der Packstoffbahn (1 , 1 ') vorgesehen sind, sowie eine Steuereinrichtung (50) zur Ansteuerung der beiden Einrichtungen (21 , 26), die die beiden Einrichtungen (21 , 26) zur Erzielung einer Soll-Position in Abhängigkeit einer erfassten Ist-Position der Packstoffbahn (1 , 1 ') ansteuert. Packaging machine, preferably by means of a device (10) according to one of claims 1 to 5, in which two, in the transport direction (23) of the packaging material web (1, 1 ') spaced separate means (21, 26) for influencing the position of the packaging material web (1 , 1 '), as well as a control device (50) for controlling the two devices (21, 26), the two means (21, 26) for achieving a desired position in response to a detected actual position of the packaging material web (1 , 1 '). Verfahren nach Anspruch 7, Method according to claim 7, dadurch gekennzeichnet, characterized, dass die Ansteuerung der beiden Einrichtungen (21 , 26) in Abhängigkeit einer zwischen den beiden Einrichtungen (21 , 26) erfassten Bahnspannung in der Packstoffbahn (1 , 1 ') erfolgt. the control of the two devices (21, 26) takes place as a function of a web tension in the packaging material web (1, 1 ') detected between the two devices (21, 26). Verfahren nach Anspruch 7 oder 8, Method according to claim 7 or 8, dadurch gekennzeichnet, characterized, dass die beiden Einrichtungen (21 , 26) jeweils eine Mittelstellung und zwei Endstellungen aufweisen, und dass die Steuereinrichtung (50) bei der Annäherung der ersten oder zweiten Einrichtung (21 , 26) an eine in that the two devices (21, 26) each have a central position and two end positions, and in that the control device (50) is connected to a first and second device (21, 26) when approaching Endstellung die jeweils andere Einrichtung (26, 21 ) derart ansteuert, dass die erstgenannte Einrichtung (21 , 26) wieder in Richtung ihrer Mittelstellung bewegt werden kann. End position the other device (26, 21) controls such that the former device (21, 26) can be moved back in the direction of its center position.
EP15716767.7A 2014-05-14 2015-04-10 Device and method for adjusting the position of a packaging material web with respect to a reference in a packaging machine Active EP3142952B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014209095.4A DE102014209095A1 (en) 2014-05-14 2014-05-14 Apparatus and method for adjusting the position of a packaging material web to a reference in a packaging machine and packaging machine
PCT/EP2015/057871 WO2015172949A1 (en) 2014-05-14 2015-04-10 Device and method for adjusting the position of a packaging material path relative to a reference in a packaging machine

Publications (2)

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EP3142952A1 true EP3142952A1 (en) 2017-03-22
EP3142952B1 EP3142952B1 (en) 2018-03-14

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DE (1) DE102014209095A1 (en)
ES (1) ES2673624T3 (en)
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
WO2019219967A1 (en) * 2018-05-18 2019-11-21 Gea Food Solutions Germany Gmbh Method for controlling the position of a material web edge

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
DE102022130815A1 (en) * 2022-11-22 2024-05-23 Weber Food Technology Gmbh Packaging machine and method for packaging food products

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DE3733129C2 (en) * 1987-10-01 1999-02-18 Focke & Co Device for separating a material web into two partial webs
US5174096A (en) * 1990-10-05 1992-12-29 Ishida Scales Mfg. Co., Ltd. Form-fill-seal type packaging machine
DE4444228C2 (en) 1994-12-13 1997-12-18 Fife Gmbh Device for the lateral guidance of a running material web
DE19516871A1 (en) * 1995-05-09 1996-11-14 Rovema Gmbh Sachet-making machine with device for varying tension at edges of film
DE102007003727B4 (en) 2007-01-25 2009-06-18 Koenig & Bauer Aktiengesellschaft Web guiding device
DE102011003666A1 (en) 2011-02-04 2012-08-09 Rovema Gmbh Tubular bag machine for manufacturing bag used for packing food product, has motion sensor and film web drive units that are connected with control element which controls state of motion of film web portion

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Publication number Priority date Publication date Assignee Title
WO2019219967A1 (en) * 2018-05-18 2019-11-21 Gea Food Solutions Germany Gmbh Method for controlling the position of a material web edge
US11767138B2 (en) 2018-05-18 2023-09-26 Gea Food Solutions Germany Gmbh Method for controlling the position of a material web edge
US12600512B2 (en) 2018-05-18 2026-04-14 Gea Food Solutions Germany Gmbh Method for controlling the position of a material web edge

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WO2015172949A1 (en) 2015-11-19
ES2673624T3 (en) 2018-06-25
EP3142952B1 (en) 2018-03-14
DE102014209095A1 (en) 2015-11-19

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