EP0754627B1 - Verfahren und Vorrichtung für die Spannungskontrolle eines Beutelbandes in einer Verpackungsmaschine - Google Patents

Verfahren und Vorrichtung für die Spannungskontrolle eines Beutelbandes in einer Verpackungsmaschine Download PDF

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Publication number
EP0754627B1
EP0754627B1 EP96202561A EP96202561A EP0754627B1 EP 0754627 B1 EP0754627 B1 EP 0754627B1 EP 96202561 A EP96202561 A EP 96202561A EP 96202561 A EP96202561 A EP 96202561A EP 0754627 B1 EP0754627 B1 EP 0754627B1
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EP
European Patent Office
Prior art keywords
web
feed
roll
tension
dancer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96202561A
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English (en)
French (fr)
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EP0754627A1 (de
Inventor
Bernard Lerner
Richard W. Hess
William N. Cronauer
Rick S. Wehrmann
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.)
Automated Packaging Systems Inc
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Automated Packaging Systems Inc
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Filing date
Publication date
Priority claimed from US07/936,925 external-priority patent/US5341625A/en
Priority claimed from US07/954,378 external-priority patent/US5394676A/en
Priority claimed from US07/954,305 external-priority patent/US5289671A/en
Application filed by Automated Packaging Systems Inc filed Critical Automated Packaging Systems Inc
Publication of EP0754627A1 publication Critical patent/EP0754627A1/de
Application granted granted Critical
Publication of EP0754627B1 publication Critical patent/EP0754627B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/123—Feeding flat bags connected to form a series or chain
    • 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
    • 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

Definitions

  • the present invention relates generally to packaging systems, more particularly to apparatus and methods for forming packages by sequentially loading and separating bags from a web in the form of a chain of interconnected and pre-opened bags, and in particular, but not exclusively, to packaging machines and methods.
  • a pair of drive nip rolls are adjacent a load station.
  • a coil of so-called "bags-on-a-roll” is mounted on a mandrell to supply a web in the form of a chain of pre-opened bags to be fed through the machine.
  • the web is fed from the supply along a path of travel through a so-called dancer arrangement, then through any accessory devices such as imprinters or hole punchers that may be provided, and thence through a section of the machine known as a bagger to the nip rolls.
  • a method for providing tension control in a packaging machine utilising webs of pre-opened bags characterised by:
  • the method preferably includes the step of applying an accelerating force to a face of each bag as it approaches the load station while maintaining tension within the web, thereby slightly pre-opening the bags. Desirably, tension in the third section is maintained by applying differential feed rates with two components of the second mechanism.
  • the first mechanism preferably includes a pair of drive nip rolls and the method further includes the step of varying the feed rate of the nip rolls in response to sensed web feed conditions. Desirably, relative movement of a pair of feed rolls is used to sense web feed conditions.
  • the method preferably further includes the steps of:
  • the present invention further provides apparatus for delivering a web from a supply station to a load station in a packaging machine, the apparatus comprising:
  • the second web gripping means is preferably a co-acting pair of belt conveyors and a downstream load station nip roll pair having a feed rate greater than that of the conveyors.
  • a dancer mechanism controls tension in a middle one of the three sections, and the first gripping and feed means includes a powered nip roll set having a feed rate responsive to motion of the dancer mechanism.
  • the first gripping and feed means preferably includes:
  • the feed rate control means preferably comprises a pair of nip rolls at least one of which is connected to a stepper motor and motor output control means for sensing relative location of the roll sets in the control range and controlling the motor in response to such location sensing.
  • the frames are pivotally connected and the output control means is a gear segment connected to the frame pivot to sense relative frame pivoting in the range, the gear segment being meshed with a pot gear that is connected to a potentiometer.
  • the machine preferably includes structure adapted to releasably retain the frames in the web feed position.
  • the rate control means desirably includes a pair of nip rolls, one of the nip rolls including a shaft projecting into a curved slot in the upper dancer frame, the slot including a feed position retention portion, and said one of the nip rolls being movable from a tension control range position to a web feed position wherein a portion of the shaft is in the feed position retention portion.
  • a packaging machine constructed in accordance with a preferred embodiment of the invention is illustrated generally at 10.
  • the machine 10 is constructed to load bags from a web 11 in the form of an interconnected chain of open bags.
  • the bags are preferably connected together along lines of weakness so that each bag can be separated from the web after it has been loaded with a product.
  • the packaging machine 10 includes an upstanding support frame 12 that sits atop a base 13.
  • the base 13 is supported by rollers 14 that allow the packaging machine 10 to be moved easily.
  • the packaging machine 10 further includes a bagger 15 that is cantilever mounted on the support frame 12.
  • the bagger includes a removable housing or cover 16 that encloses the bagger and covers a bagger web feed mechanism M, Figure 6.
  • a web supply and tensioning device 17 is connected to base 13 below the bagger 15.
  • the support frame 12 is preferably a hollow, single-leg frame that is, as is best seen in Figure 5, laterally offset to one side of the base 13.
  • An enclosed inner chamber 18 ( Figure 1) of the support frame forms a portion of an air manifold.
  • a support arm 20 projects laterally from the support frame 12.
  • the arm 20 is the cantilever support for the bagger 15.
  • the arm 20 is also preferably hollow to provide an air chamber which is in communication with the chamber 18 to form a further portion of the air manifold.
  • the tube 20 projects through and is secured to the stand 12, Figure 5. Apertures A in the arm 20 provide fluid communication between the chambers of the stand and the arm.
  • An air regulator 21 is connected to the support frame 12 and is connectable to an external air supply source (not shown).
  • the air regulator allows air from an external source to enter the air manifold and maintain the air within the manifold at a desired pressure.
  • a set of connectors 22 are provided along the support arm for connection of accessories (not shown). If an accessory requires a reduced air pressure, an air regulator can be attached to a connector in order to adjust the pressure of the air supplied by the manifold.
  • the web supply and tensioning device 17 includes a lower frame 30 and a cantilevered supply shaft 31 for carrying a roll of bags R.
  • a roll positioning hub 32 is mounted on the supply shaft near an end connected to the frame 30 while a hub assembly 33 is mounted at its opposite end.
  • the two hubs 32, 33 have knobs 34, 35 for clamping of the hubs onto the shaft in adjusted positions along the shaft.
  • the hub assembly 33 is removed from the supply shaft and a supply roll is slid onto the shaft.
  • the hub assembly 33 is placed back on the supply shaft and is slid up against the supply roll such that a spring 36 of the hub assembly 33 is against the supply roll in order to bias the supply roll against the positioning hub 32 while allowing the roll to rotate freely.
  • the tensioning device 17 also includes an upper frame 39 which carries an upper dancer roll set 40.
  • the upper frame 39 is pivotally connected to the lower frame 30 and is pivotable with respect to the remainder of the tensioning device about an axis co-axial with an idler roll 43.
  • the upper dancer roll set has three idler rolls 41a, 41b, 41c.
  • Three lower idler rolls 42a, 42b, 42c are carried by the lower frame 30 and form a lower roll set.
  • the upper and lower rolls define a section of a web path of travel with the lower rolls being respectively laterally offset rearwardly of the path of travel with respect to the upper rolls.
  • the web path of travel begins with the supply roll R, passes over the idler roll 43 and continues through the web tensioning device.
  • the idler roll 43 is mounted on the frame 30 along the pivot axis of the upper dancer roll set 40 and its shaft serves as the pivot for the upper set.
  • a segment of a gear 44 is attached to the upper frame 39 so that it pivots with the upper dancer roll set 40 about the axis of the idler roll 43.
  • the gear segment 44 is in mesh with a "pot gear” 45 that is connected to a potentiometer 46.
  • This pot gear 45 causes pot rotation in response to the rotation of the gear segment 44 and thereby “informs" the potentiometer of the position of the upper dancer roll set 40.
  • a stepper motor 50 is controlled by the potentiometer 46 and drives a drive roll 51 via a toothed belt 52.
  • the drive roll 51 has an idler roll 53 nipped against it to form a nip roll assembly.
  • This nip roll assembly contributes to the definition of the web path of travel and provides one of the features of the invention.
  • This assembly pulls the web from the supply roll R and functions to isolate tension effects of the supply roll in the feed section of the path of travel from sections of the web path which are downstream from the nip assembly.
  • the nip roll 53 is biased against the drive roll 51 by two springs 54a, 54b.
  • a shaft of the nip roll travels within a slot 55 provided by the upper frame 39.
  • a second slot is on an opposite side of the frame 39, but is not illustrated.
  • the springs 54a, 54b are stretched and the nip roll 53 is pulled away from the drive roll 51 to move its axial shaft into offset end sections of the slots 55 and to horizontal sections of slots 56 defined within the frame 30. This retains the upper set in the position of Figure 13 to facilitate set-up feeding of the web between the nip roll and the drive roll and through the tensioning device.
  • each counter weight has a control knob 61 that threadedly engages a screw 62 located in a corresponding slot defined by the upper frame 39. By loosening and tightening the knob, the counter weight can be shifted appropriately along an upper guide portion of the frame 39 to adjust the amount of tension applied to the web.
  • the counter weights are small and compact as contrasted with dancer arms used with previous machines.
  • the web is fed from a supply roll R carried by the supply shaft 31 over the idler roll 43 and between the nip roll 53 and drive roll 51.
  • the upper dancer roll set 40 is in its web feed position of Figure 13, the web is laid across the three lower rolls 42a, 42b, 42c.
  • the drive roll shaft is then manually moved out of the offset sections of the slots 55 and the horizontal sections of slots 56.
  • the upper dancer roll set is then lowered until the upper dancer rolls 41a, 41b, 41c engage the web and push it down such that the web is now woven over each lower roll and under each upper dancer roll in a "zig-zag" fashion.
  • the upper dancer roll set 40 moves upwardly thereby causing the gear segment 44 to pivot in conjunction with the upper dancer roll set movement which, in turn, rotates the pot gear 45.
  • the potentiometer thereby "instructs” the stepper motor to drive the drive roll 51 to feed the web from the supply roll to increase the volume of web in the web tensioning device 17.
  • This allows the upper dancer roll set 40 to move downwardly against the web.
  • This causes the segment of the gear to move the pot gear, which causes the potentiometer to "instruct" the stepper motor to slow its driving of the drive roll 51.
  • the upper dancer roll set 40 moves up and down in a tension control range to control the tension of the web.
  • the web travels under the third upper dancer roll 41c, it travels upwardly through a second section of the web path to the bagger 15.
  • accessory devices may be positioned along the second section.
  • the bagger feed mechanism M functions to isolate downstream tensional effects from the second section so that the mechanism M and the nip roll assembly of the device 17 cooperate to isolate this second section from up- and downstream tensional forces.
  • the feed mechanism M defines a third section of the web path of travel.
  • An idler roll 71 over which the web 11 is fed delineates the upstream end of the mechanism M.
  • a second idler roll 72 is further along the web path of travel within the bagger.
  • a pair of load station nip rolls 73, 74, with the roll 74 being a driven roll, are positioned adjacent an output end 70b of the bagger 15.
  • Grooves 75 are defined in each of the rolls 71, 72, 73, 74.
  • Four lower elastic belts 76 are around the rolls 71, 74 and in their grooves 75 to provide a lower web conveyor.
  • Four upper elastic belts 77 are around the rolls 72, 73 and in their grooves 75 to provide a co-acting upper web conveyor.
  • the upstream rolls 71, 72 are offset, both longitudinally and laterally of the web path with the axis of the upstream lower conveyor roll 71 located above the plane of an upper conveyor feed reach 77f. While the location of the lower conveyor roll 71 may be adjusted, in the preferred and disclosed arrangement it is located in a plane that contains the axes of the upper conveyor rolls 72, 73. Because of the offset of the roll 71, the lower belts 76 are stretched around and in contact with an underside of the roll 72. The upper conveyor belts 77 are elongate oval in shape while belts 76 are otherwise configured because of the contact with the upper belt roll 72.
  • the bending of the lower belts 76 over the upstream upper belt roll 72 assures a positive clamping of a web being fed against the upper roll and positive frictional engagement of the belt with a web being fed through the bagger.
  • This frictional engagement at the upper rearward roll 72 contributes to two of the outstanding features of the invention. First, it isolates downstream tensional forces from upstream sections of the web and thus, delineates a division between the second and third sections of the web path of travel.
  • the assured frictional engagement with the belt permits the bagger feed mechanism M to grasp a web and self-thread it through the mechanism M to a load station adjacent the nip rolls 73, 74. Further, by reversing the direction of belt rotation, one may readily unthread the machine to facilitate change over to a different web or correct a malalignment should it occur as a web is self threaded.
  • the dimensioning of the nip rolls 73, 74 provides another of the outstanding features of the invention.
  • the radial depth of the grooves 75 in these nip rolls is slightly greater than the diameter of the belts 76, 77.
  • the diameters of the rolls 73, 74 are slightly greater than the diametrical dimension of the belts as they are reeved around the nip rolls and disposed in the grooves with the result that the lineal surface speed of the rolls 73, 74 at their line of nip engagement is slightly greater than the surface speed of feed reaches 76f, 77f.
  • This speed differential provides several outstanding advantages. First, it provides positive web tensioning through the third section in the path of travel between the feed reaches 76f, 77f.
  • the upper nip roll 73 is offset rearwardly along the path of travel with respect to the drive roll 74.
  • the nip roll 73 is nipped against the drive roll by springs 80a, 80b.
  • a lever 81 is connected to an outer shaft of the nip roll 73 in a cammed relationship such that movement of the lever selectively from its position in Figure 10 to its position in Figure 9 will cause the nip roll 73 to be separated from the drive roll 74 as shown in Figure 9. This separation facilitates machine service and maintenance.
  • the nip roll 73 and the drive roll 74 are connected to a support 73a to form a nip roll sub-assembly.
  • the nip roll sub-assembly can be mounted in a selected one of two locations based upon operator choice.
  • Four holes 78 are aligned with either of two sets of holes 79a, 79b (See Fig. 15) located on the bagger 15.
  • Bolts 79c (two of four are shown) are used to secure the nip roll sub-assembly in its selected location on the bagger.
  • Figure 16 illustrates the nip roll sub-assembly mounted in its lower position and connected to the holes 79b.
  • a longer belt 74b is required to connect the roll 74 and the stepper motor 74a in the lower position than is the case in the upper position.
  • a set of three fingers 82 is secured to the support 73a by fasteners 82a, Figure 10.
  • the fingers 82 depend from the support 73a and then extend forwardly through arcuately curved sections 82b disposed in grooves 83 formed in the upper nip roll 73.
  • the fingers extend further forwardly and downwardly through a second set of arcuately curved sections 82c which are complementally, closely adjacent the lower nip roll 74.
  • the lower finger sections 82c serve as web deflectors to deflect the web downwardly and assure appropriate positioning of each bag to be loaded at the load station.
  • a spark gap detector 82d is positioned slightly upstream from the nip rolls 73, 74 and co-acts with the fingers 82 to sense web perforations that delineate lines of weakness between successive bags.
  • the web normally acts as an insulator preventing spark travel between the sensor and the fingers.
  • arcs travel through the web from the sensor to the fingers, thereby providing a signal for registration of a bag in position to be loaded. Because the bags are slightly pre-opened by the tension created by the drag of the belts 76, 77, offset perforations at an upstream location in the backs of the bags can be detected by the sensor.
  • An air knife 84 is in communication with the air manifold defined by the support frame 12 and support arm 20.
  • the air knife is commercially available from Exair Corporation, 1250 Century Circle North, Cincinnati, Ohio 45246 under Part No. X032092.
  • An air tube 85 is also in communication with the air manifold. After a bag passes between the nip rolls 73, 74 and is in a position for loading, a burst of air from air tube 85 opens the bag while a steady, laterally elongate, stream of air from the air knife completes and maintains the opening of the bag.
  • the air from the air knife passes from between upper and lower portions 84a, 84b, Figure 10. After the air passes between these two portions, it travels over and around a radiused corner 84c of the lower portion 84b and along a front side of the air knife and into the bag. Because of the long, lateral dimension of the air knife, it provides a sheet of air under low pressure thereby creating a thorough side-to-side opening of the bag.
  • a product may be either manually or automatically loaded into the bag.
  • a solenoid 86 terminates the flow of air through the air knife 84.
  • a clamping sub-assembly 90 is moved in against the bag causing the bag to move against a heater bar sub-assembly 91, Figure 2.
  • the clamping sub-assembly 90 is connected to the machine 10 by guide rods 96, 97.
  • the sub-assembly 90 includes a support 92 and a seal pad 93 connected to the support, Figure 2.
  • a seal pad housing 94 is connected to the support 92 via lost motion connections (one of which is shown at 95).
  • the lost motion connections each include a pin 100 and a spring 101.
  • the heater bar sub-assembly 91 includes a heater bar 102 protected by a conventional Teflon® cover. Upper and lower gripper plates 103, 104 flank the heater bar. Each of the gripper plates 103, 104 has a flat surface 105. The plates are mounted on the bagger 15 by bolts 106, 107 that are surrounded by springs 108, 109. Upper and lower edges 105a, 105b of the plates are sharpened and serrated.
  • a jam prevention system includes two reflective devices located on the clamping sub-assembly, a light beam emitter and a light beam receiver.
  • the structure and operation of the jam prevention system is more fully described in a co-pending patent application, which is incorporated herein in its entirety by reference, entitled “Packaging Machine and Method,” filed concurrently herewith and owned by a common assignee.
  • the clamping sub-assembly 90 is moved against the heater bar sub-assembly 91 by an air cylinder 110.
  • the air cylinder 110 is in fluid communication with the air manifold within the support frame 12 and support arm 20.
  • the seal pad housing 94 compresses against its lost motion connections and the seal pad 93 clamps a loaded bag against the gripper plates 103, 104 and thence against the heater bar 102. While the loaded bag is clamped between the sub-assemblies, the stepper motor 74a reverses the web feed thereby separating the loaded bag from the web.
  • Electronic controls for the machine 10 are contained within a housing 120 that is illustrated in Figures 17-19.
  • the controls include a controller board defining a bus system and one or more auxiliary boards coupled to the bus system.
  • the housing 120 is a removable section of the bagger 15 and therefore can easily be removed as a unit for maintenance and service as opposed to individually removing electrical circuit boards or other components.
  • the structure and operation of the electronic control system of the machine 10 is more fully described in a co-pending patent application, which is incorporated herein in its entirety by reference, entitled “Bagging Control Apparatus and Method," filed 27th August 1992 and owned by a common assignee.
  • An input module 130 is connected to the support frame 12.
  • the input module 130 includes a keypad 131 that allows operator input for programming and controlling the machine 10.
  • the bagger 15 and input module 130 are individually pivotable as illustrated in phantom in Figure 1.
  • Two screws 132, 133 are respectively contained within slots 134, 135 located within a portion of a module support bracket 136. By loosening the screws 132, 133, the module can be rotated about an extension of the tube 201 to position the keypad at a desired orientation.
  • Split clamps 137, Figure 5 rotatively fix the bagger 15 at a desire orientation on the tube 20. Loosening of cap bolts 139 (only one of four being shown in Figure 5) allows the bagger to be rotated to a desired orientation and then clamped in that orientation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Package Closures (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Advancing Webs (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Claims (14)

  1. Verfahren zum Bereitstellen einer Spannungssteuerung in einer Verpackungsmaschine, die Bahnen aus vorgeöffneten Beutein verwendet, gekennzeichnet durch:
    a) Fördern einer länglichen Bahn (11) aus vorgeöffneten Beuteln von einem Nachschub (R) entlang eines ersten Abschnitts eines Transportwegs durch einen ersten Bahn-Ergreifungs- und - Fördermechanismus (17) hindurch, indem die Bahn zwischen dem Nachschub und dem ersten Mechanismus gespannt wird, während eine solche Spannungsausübung von den förderabseitigen Wegabschnitten isoliert wird;
    b) Fördern der Bahn von dem ersten Mechanismus entlang eines zweiten Abschnitts des Wegs durch einen zweiten Bahn-Ergreifungs- und -Fördermechanismus (M), während Spannung in dem zweiten Abschnitt von einem dritten förderabseitigen Abschnitt der Bahn isoliert wird;
    c) kontrolliertes Spannen der Bahn in dem zweiten Abschnitt beim Fördern der Bahn durch den zweiten Abschnitt hindurch; und
    d) Ausüben von Spannung an einem dritten Abschnitt der Bahn förderabseitig von dem zweiten Mechanismus.
  2. Verfahren nach Anspruch 1, gekennzeichnet durch Ausüben einer Beschleunigungskraft auf eine Fläche jedes Beutels, wenn er sich der Ladestation nähert, während die Spannung innerhalb der Bahn beibehalten wird, wodurch die Beutel geringfügig vorgeöffnet werden.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Spannung in dem dritten Abschnitt beibehalten wird, indem differentielle Fördergeschwindigkeiten mit zwei Bestandteilen (73, 74) des zweiten Mechanismus ausgeübt werden.
  4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der erste Mechanismus ein Paar Antriebs-Klemmwalzen (51, 53) enthält und das Verfahren weiterhin einen Schritt zum Verändern der Fördergeschwindigkeit der Klemmwalzen als Reaktion auf erfaßte Bahn-Förderbedingungen enthält.
  5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Relativbewegung eines Paares Förderwalzen (41, 42) verwendet wird, um Bahn-Förderbedingungen zu erfassen.
  6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es die folgenden Schritte enthält:
    a) relatives Positionieren schwenkbar verbundener oberer und unterer Tänzerrahmen (30, 39), die jeweils eine obere und eine untere Tänzerwalzengruppe (40, 42) tragen, so daß die Walzengruppen auf entgegengesetzten Seiten einer imaginären Ebene sind;
    b) Fördern der Bahn vorwiegend entlang der Ebene, während die Walzengruppen auf entgegengesetzten Seiten von ihr derart positioniert sind;
    c) Bewegen des oberen Rahmens, um seine Walzengruppe auf der anderen Seite der Ebene in einer Bahn-Förderposition in einem Spannung-Steuerungsbereich zu positionieren; und
    d) Steuern der Bahnspannung zwischen dem Nachschub und dem ersten Mechanismus durch Überwachen der relativen Positionen der Tänzerrahmen als Reaktion auf das Fördern der Bahn durch die Beutelmaschine hindurch; und Steuern der Förderung der Bahn als Reaktion auf die relativen Positionen der Tänzerrahmen.
  7. Vorrichtung zum Heranführen einer Bahn von einer Nachschubstation an eine Ladestation in einer Verpackungsmaschine, wobei die Vorrichtung aufweist:
    a) ein erstes Bahn-Ergreifungs- und -Fördermittel (17), das entlang eines Bahn-Transportwegs positioniert ist, um eine Bahn von einem Vorrat bei der Nachschubstation zu ziehen;
    b) einen Bahn-Fördermechanismus (M), der einen Abschnitt des Bahnwegs bestimmt und ein zweites Bahn-Ergreifungs- und - Fördermittel (76, 77) enthält, das entlang des Bahn-Transportwegs in der Nähe des Eingangs zu dem Mechanismus positioniert ist; und
    wobei die Vorrichtung dadurch gekennzeichnet ist, daß:
    c) jedes der Ergreifungs- und Fördermittel derart ausgelegt ist, daß es Bahnspannung-Erzeugungskräfte förderaufseitig von ihm von einem förderabseitigen Bahnabschnitt isoliert und umgekehrt, wodurch der Bahnweg in drei Abschnitte unterteilt wird und in jedem von ihnen die Bahnspannung unabhängig von den anderen Abschnitten gesteuert wird.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß das zweite Bahn-Ergreifungsmittel ein zusammenwirkendes Paar Bandförderer (76, 77) ist und ein förderabseitiges Ladestation-Klemmwalzenpaar (73, 74) eine Fördergeschwindigkeit hat, die größer als die der Förderer ist.
  9. Vorrichtung nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß ein Tänzermechanismus (30, 39, 40, 42) die Steuerung in einem mittleren der drei Abschnitte steuert und daß das erste Ergreifungs- und Fördermittel eine angetriebene Klemmwalzengruppe (51, 53) enthält, die eine auf die Bewegung des Tänzermechanismus reagierende Fördergeschwindigkeit hat.
  10. Vorrichtung nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß das erste Ergreifungs- und Fördermittel enthält:
    a) eine obere und eine untere Tänzerwalzengruppe (40, 42);
    b) einen oberen und einen unteren Tänzerwalzenrahmen (30, 39), die jeweils die obere bzw. die untere Gruppe tragen; dadurch gekennzeichnet, daß
    c) die Rahmen relativ beweglich zueinander miteinander verbunden sind und in einer Bahn-Förderposition und einem Bahnspannung-Steuerungsbereich selektiv relativ positionierbar sind;
    d) die obere Walzengruppe, wenn sie sich in der Bahn-Förderposition befindet, auf einer Seite einer imaginären Ebene ist, die durch die Achsen der am meisten förderaufseitigen und am meisten förderabseitigen Walzen der unteren Gruppe bestimmt ist, wobei die obere Gruppe auf der entgegengesetzten Seite der Ebene ist, wenn sie sich in dem Spannung-Steuerungsbereich befindet;
    e) ein Rahmenbewegung-Erfassungsmechanismus (44, 45, 46) mit den Rahmen funktionell verbunden ist und so ausgelegt ist, daß er die Relativbewegung der Rahmen erfaßt, wenn er sich in dem Steuerungsbereich befindet; und
    f) ein Bahn-Fördergeschwindigkeit-Steuerungsmittel (51, 53) derart positioniert ist, um mit einer entlang dem Weg geförderten Bahn in Eingriff zu gelangen, um die Fördergeschwindigkeit der Bahn als Reaktion auf die durch den Mechanismus erfaßte Relativbewegung der Rahmen zu steuern.
  11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß das Fördergeschwindigkeit-Steuerungsmittel aufweist: ein Paar Klemmwalzen (51, 53), von denen mindestens eine mit einem Schrittmotor (50) verbunden ist; und ein MotorausgabeSteuerungsmittel (46) zum Erfassen des relativen Orts der Walzengruppen in dem Steuerungsbereich und Steuern des Motors als Reaktion auf eine derartige Ort-Erfassung.
  12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß die Tänzerrahmen (30, 39) schwenkbar verbunden sind und daß das Ausgabe-Steuerungsmittel ein mit dem Rahmendrehpunkt verbundener Getriebeabschnitt (44) ist, um eine Rahmen-Relativdrehung in dem Bereich zu erfassen, wobei der Gewindeabschnitt mit einem Topfzahnrad (45) verzahnt ist, das mit einem Potentiometer (46) verbunden ist.
  13. Vorrichtung nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß die Maschine einen Aufbau (54, 55, 56) enthält, der ausgelegt ist, um die Rahmen in der Rahmen-Förderposition lösbar zu halten.
  14. Vorrichtung nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, daß das Fördergeschwindigkeit-Steuerungsmittel ein Paar Klemmwalzen enthält, wobei eine der Klemmwalzen (51, 52) eine Welle enthält, die in einen gekrümmten Schlitz in dem oberen Tänzerrahmen ragt, und der Schlitz (55) einen Förderposition-Halteabschnitt enthält, wobei die eine der Klemmwalzen bewegbar ist von einer Spannung-Steuerungsbereichsposition zu einer Bahn-Förderposition, wobei ein Abschnitt der Welle in dem Förderposition-Halteabschnitt ist.
EP96202561A 1992-08-27 1993-08-26 Verfahren und Vorrichtung für die Spannungskontrolle eines Beutelbandes in einer Verpackungsmaschine Expired - Lifetime EP0754627B1 (de)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US07/936,925 US5341625A (en) 1992-08-27 1992-08-27 Bagging control apparatus and method
US936925 1992-08-27
US954305 1992-09-30
US07/954,378 US5394676A (en) 1992-09-30 1992-09-30 Packaging machine and method
US07/954,305 US5289671A (en) 1992-09-30 1992-09-30 Packaging machine and method
EP19930306802 EP0586201B1 (de) 1992-08-27 1993-08-26 Vorrichtung zum Verpacken
US954378 1997-10-20

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP19930306802 Division EP0586201B1 (de) 1992-08-27 1993-08-26 Vorrichtung zum Verpacken
EP93306802.5 Division 1993-08-26

Publications (2)

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EP0754627A1 EP0754627A1 (de) 1997-01-22
EP0754627B1 true EP0754627B1 (de) 1999-06-16

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EP19930306800 Expired - Lifetime EP0588520B1 (de) 1992-08-27 1993-08-26 Vorrichtung und Verfahren zum Siegeln von Verpackungen
EP19930306801 Expired - Lifetime EP0592096B1 (de) 1992-08-27 1993-08-26 Steuerung eines Verfahrens und einer Vorrichtung zum Verpacken in Beuteln
EP96202561A Expired - Lifetime EP0754627B1 (de) 1992-08-27 1993-08-26 Verfahren und Vorrichtung für die Spannungskontrolle eines Beutelbandes in einer Verpackungsmaschine
EP19930306802 Expired - Lifetime EP0586201B1 (de) 1992-08-27 1993-08-26 Vorrichtung zum Verpacken

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EP19930306800 Expired - Lifetime EP0588520B1 (de) 1992-08-27 1993-08-26 Vorrichtung und Verfahren zum Siegeln von Verpackungen
EP19930306801 Expired - Lifetime EP0592096B1 (de) 1992-08-27 1993-08-26 Steuerung eines Verfahrens und einer Vorrichtung zum Verpacken in Beuteln

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DE19920479B4 (de) * 1999-05-04 2005-03-31 Windmöller & Hölscher Kg Maschine zur Bearbeitung und/oder Herstellung von Gegenständen
TW466203B (en) * 1999-07-07 2001-12-01 Tetra Laval Holdings & Amp Fin Filling machine
CN113501172A (zh) * 2021-08-03 2021-10-15 浙江康凌机械制造有限公司 一种快递连卷袋智能封袋贴单打包机
CN115231061B (zh) * 2022-07-04 2023-09-15 无锡市尚来科技有限公司 卧式塑料袋包装机
CN115871998A (zh) * 2023-01-06 2023-03-31 佛山森洋自动化包装设备有限公司 一种制袋包装一体机

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2004001A1 (de) * 1970-01-29 1971-09-02 Cloud Machine Corp Verfahren und Vorrichtung zur kontinuierlichen Herstellung einer Anzahl von gefuellten Verpackungen
JPS6018329Y2 (ja) * 1979-09-17 1985-06-04 株式会社太洋商会 包装装置
FR2558704B1 (fr) * 1984-01-27 1987-12-11 Manguelin Henri Installation de distribution de sacs en matiere plastique souple, notamment de sacs a poignees laterales, stockes en bobine, en particulier pour les magasins a grande surface
US4546596A (en) * 1984-05-08 1985-10-15 Hayssen Manufacturing Company Method of and apparatus for forming, filling and sealing packages
EP0208766B1 (de) * 1985-01-04 1990-03-28 Automated Packaging Systems, Inc. Verpackungsanordnung und verfahren
FR2583712B1 (fr) * 1985-06-21 1987-09-04 Vannier Pierre Perfectionnement apporte au dispositif distributeur de sacs individuels d'emballage
US4768327A (en) * 1987-06-22 1988-09-06 Package Machinery Company Packaging machine with variable sealing jaw displacement apparatus
US4899520A (en) * 1988-03-29 1990-02-13 Automated Packaging Systems, Inc. Packaging apparatus and method
FR2638420B1 (fr) * 1988-11-02 1991-05-24 Jaquier Claude Machine pour emballer des portions de produits dans un film, notamment dans un film transparent retractable

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Publication number Publication date
DE69303561T2 (de) 1996-10-31
DE69314273T2 (de) 1998-03-12
ES2135841T3 (es) 1999-11-01
EP0588520B1 (de) 1996-07-10
DE69314273D1 (de) 1997-11-06
ES2108830T3 (es) 1998-01-01
EP0592096B1 (de) 1997-03-05
EP0588520A1 (de) 1994-03-23
DE69303561D1 (de) 1996-08-14
EP0754627A1 (de) 1997-01-22
EP0592096A1 (de) 1994-04-13
DE69325399D1 (de) 1999-07-22
DE69308451D1 (de) 1997-04-10
EP0586201A1 (de) 1994-03-09
DE69325399T2 (de) 1999-12-16
EP0586201B1 (de) 1997-10-01

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