EP3181462B1 - Method and device for fitting valve sacks - Google Patents

Method and device for fitting valve sacks Download PDF

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Publication number
EP3181462B1
EP3181462B1 EP15003610.1A EP15003610A EP3181462B1 EP 3181462 B1 EP3181462 B1 EP 3181462B1 EP 15003610 A EP15003610 A EP 15003610A EP 3181462 B1 EP3181462 B1 EP 3181462B1
Authority
EP
European Patent Office
Prior art keywords
valve
sack
roller
conveying direction
transport roller
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.)
Active
Application number
EP15003610.1A
Other languages
German (de)
French (fr)
Other versions
EP3181462A1 (en
Inventor
Marc Tellen
Andreas Haurenherm
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.)
Beumer Group GmbH and Co KG
Original Assignee
Beumer Group GmbH and Co KG
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 Beumer Group GmbH and Co KG filed Critical Beumer Group GmbH and Co KG
Priority to ES15003610T priority Critical patent/ES2750557T3/en
Priority to EP15003610.1A priority patent/EP3181462B1/en
Publication of EP3181462A1 publication Critical patent/EP3181462A1/en
Application granted granted Critical
Publication of EP3181462B1 publication Critical patent/EP3181462B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B65B43/14—Feeding individual bags or carton blanks from piles or magazines
    • B65B43/16—Feeding individual bags or carton blanks from piles or magazines by grippers
    • B65B43/18—Feeding individual bags or carton blanks from piles or magazines by grippers by suction-operated grippers
    • 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
    • B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B1/18—Methods of, or means for, filling the material into the containers or receptacles for filling valve-bags
    • 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
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B3/17—Methods of, or means for, filling the material into the containers or receptacles for filling valve bags
    • 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
    • B65B43/26—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/262—Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks opening of valve bags
    • 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
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/44—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation from supply magazines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/085—Suction grippers separating from the bottom of pile
    • B65H3/0858—Suction grippers separating from the bottom of pile this action resulting merely in a curvature of each article being separated
    • B65H3/0866—Suction grippers separating from the bottom of pile this action resulting merely in a curvature of each article being separated the final separation being performed between 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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/02—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains
    • B65H5/021—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts
    • B65H5/023—Feeding articles separated from piles; Feeding articles to machines by belts or chains, e.g. between belts or chains by belts between a pair of belts forming a transport nip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/33—Modifying, selecting, changing orientation
    • B65H2301/332—Turning, overturning
    • B65H2301/3321—Turning, overturning kinetic therefor
    • B65H2301/33212—Turning, overturning kinetic therefor about an axis parallel to the direction of displacement of material
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/33—Modifying, selecting, changing orientation
    • B65H2301/332—Turning, overturning
    • B65H2301/3322—Turning, overturning according to a determined angle
    • B65H2301/33222—90°
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/14—Roller pairs
    • B65H2404/144—Roller pairs with relative movement of the rollers to / from each other
    • B65H2404/1441—Roller pairs with relative movement of the rollers to / from each other involving controlled actuator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/191—Bags, sachets and pouches or the like

Definitions

  • the invention relates to a device for feeding and attaching valve bags along a rectilinear conveying direction to a filler neck of a filling machine, and to a corresponding method using the device.
  • the object of the invention is to provide a device improved so far and a corresponding method.
  • the invention initially proposes a device according to claim 1.
  • a transport roller is preferably to be understood as a deflection roller of the intermediate conveyor, which is preferably designed as a belt conveyor, with support areas of larger diameter and receiving areas of smaller diameter. The support areas are firmly connected to the deflection roller and transmit the moment of the transport roller.
  • the magazine can have a front wall.
  • the magazine bottom, the rear wall, the front wall, if present, and / or the side walls may be formed of parallel cylindrical rods.
  • a stacking direction of the magazine extending transversely to extension planes of the stacked valve sacks is arranged at an angle of up to 45 degrees to the vertical, wherein the suction gripper is preferably pivotable about an equally large angle.
  • the front edge of the magazine bottom can be offset in height from the rear edge, in particular higher than this, based on the suction gripper underneath.
  • the intermediate conveyor for detecting a lateral, parallel to the conveying direction extending edge portion of a valve bag is formed, which may have a width of 5% to 25% of a bag width.
  • the intermediate conveyor may have an upper and a lower roller bar, between which the lateral edge portion of a valve bag is frictionally detected.
  • the intermediate conveyor a lower belt drive with a circulating between the transport roller and a first deflection roller with horizontal axis of rotation guided lower conveyor belt and an upper belt drive with an upper conveyor belt, which is arranged between a adjacent to the pressure roller and above the transport roller second guide roller and a third deflecting roller arranged adjacent to the first deflecting roller, wherein the lateral edge section of a valve bag can be frictionally engaged between an upper run of the lower transporting belt and a lower run of the upper transporting belt.
  • a horizontal support surface may be arranged which is wider than the lateral edge portion and whose width corresponds in particular to the bag width, wherein the support surface extends over only a part of the length of the intermediate conveyor, for example. Over max. 30% or 50% of its length, seen in Aufsteckraum.
  • a guide means for example. Guide plate, may be provided for pivoting a valve bag transported by the intermediate conveyor into the vertical, or for supporting the gravitational pivoting movement, so that the Aufschussomeer correctly detects the valve bag.
  • a first drive for the vertical movement of the pressure roller and a second drive for the movement of the suction pad are coordinated controlled by a controller, so that the pressure roller against the feed roller is pressed as soon as the suction pad has moved a front bag portion of a valve bag between the transport roller and pressure roller ,
  • the opening means for opening a valve of a valve sack to be stowed can be formed in a manner known per se by shaped sheets which are provided with suction openings are, which in turn can be coupled with a negative pressure generating device, so that an opening effect can be achieved.
  • a guide means such as baffle or blowing nozzle for supporting a pivoting of an adjacent to the horizontal, lateral edge portion portion of the valve bag is arranged in a vertical position.
  • the intermediate conveyor may comprise a first intermediate conveyor for carrying the full width valve bag and a second intermediate conveyor for detecting only the lateral edge section of the valve bag.
  • the transport roller has at least two axially spaced, intended for cooperation with the pressure roller, in particular cylindrical bearing areas with a support diameter, between which at least one receiving area is formed with a smaller diameter, wherein the suction pads at least partially in the at least one receiving area is movable.
  • an axial width of the transport roller corresponds to a width of the removal opening between the side walls of the magazine.
  • the width of the transport roller may be equal to the mutual distance of the side walls of the magazine.
  • the at least one receiving region is preferably cylindrical and has a diameter which is between 10% and 90% of the contact diameter.
  • the object underlying the invention is further achieved by a method according to claim 13.
  • the pressure roller is moved against the transport roller immediately after the front bag section has been brought by the suction pad between the transport roller and the pressure roller.
  • valve sack is pivoted downward by gravity and / or by a guide plate or with the aid of a blowing nozzle.
  • the intermediate conveyor is formed from a first and a second intermediate conveyor, wherein the first intermediate conveyor carries the valve bag in its full width and the second intermediate conveyor detects only the lateral edge portion of the valve bag, while the remaining part of the valve bag vertically downwards is moved.
  • FIG. 1 shows a schematic side view of the device according to the invention for attaching valve bags 2 in a conveying direction 4 to a filler neck 6 of a filling machine, not shown.
  • a magazine 8 serves to receive a stack 10 of valve bags 2 and has a magazine bottom 12, side walls (parallel to the plane of representation), a front wall 14 and a rear wall 16.
  • a removal opening 18 is formed, which extends transversely between the side walls and is bounded to the front by a transverse leading edge 20 of the magazine bottom 12 and to the rear by a transverse trailing edge 22 of the magazine bottom 12 is limited.
  • a distance a of the front edge 20 from the front wall 14 is smaller than a distance b of the rear edge 22 from the rear wall 16.
  • the magazine 8 is preferably not oriented vertically, but at an angle 23 of about 30 degrees counter to the conveying direction 4, in other words such that a stacking direction 24, which is perpendicular to the extension planes of the individual valve bags 2 and the magazine bottom 12 to about Inclined 30 degrees to the vertical.
  • a suction gripper 30 is arranged, which is vertically movable, which is realized here so that it is pivotable about a horizontally and transversely to the conveying direction 4 arranged pivot axis 32, between a gripping position, in which the suction pads 30 a front Sack portion 2a of a lowermost valve bag 2.1 of the stack 10, which is still completely within the magazine 8, detected, and a in FIG. 1 illustrated transfer position in which the suction pad 30, after he has pulled out the front bag section 2a from the removal opening 18 and bent at the trailing edge 22 of the magazine bottom 12, the front bag section 2a between a transport roller 34 and a pressure roller 36 has brought.
  • the transport roller 34 has three cylindrical support regions 70 spaced from one another in the axial direction, each having a matching support diameter D. Between each two of the three bearing areas 70, two receiving areas 72 are formed by cylindrical portions of the transport roller 34 with a smaller diameter d.
  • the suction gripper 30, in turn, is designed so that it is at least partially movable into the receiving areas 72 in the course of a vertical movement, in this case during a pivoting movement about the pivot axis 32, and to a certain extent immersed in the receiving areas, as shown in FIG Fig. 1 and 2 is shown schematically. In particular, there are no suction or other parts of the suction pad within the bearing areas 70 of the transport roller 34, which would otherwise collide with these.
  • the transport roller 34 is rotatable and drivable about a horizontal, arranged transversely to the conveying direction 4 axis of rotation 34a.
  • the pressure roller 36 is movable by a non-illustrated drive in a pressure or release direction 36a against the transport roller 34 and away, so that the front bag portion 2a frictionally detected by the transport roller 34 as soon as he pressed by the pressure roller 36 against this is and the bottom valve bag 2a of the stack 10 is completely withdrawn from the magazine 8.
  • the transport roller 34 extends over an entire bag width B of a valve bag, s. Fig. 2 , And also the pressure roller 36 extends suitably over the entire bag width, so that the valve bag is pulled in a straight line in Aufsteckcardi 4 from the magazine.
  • an intermediate conveyor 40 which serves to supply the valve bag in the conveying direction 4 of a booster device, which comprises a Aufschuss choirer and means for opening the valve bag.
  • a special feature of the intermediate conveyor 40 is that it does not detect or carry a valve bag 2 in full width, but only a lateral edge portion 2b of a valve bag, which runs in the conveying direction 4 and in relation to the bag width B of a valve bag 2 is small and approximately between 5% and 25% thereof, for example, 10% of the bag width B. It would also be conceivable that the intermediate conveyor consists of two successively arranged conveyors or conveyor pairs.
  • a side edge portion 2b of the valve bag is detected while the remaining part of the valve bag is moved vertically down (for example, automatically by gravity alone or assisted by a Baffle or a tuyere).
  • the intermediate conveyor 40 is formed by two belt drives, wherein a lower belt drive 42 has a lower transport belt 44 which rotates between the transport roller 34 and a first guide roller 46, and an upper belt drive 48 with an upper transport belt 50, which between a adjacent to the pressure roller 36 and above the transport roller 34 arranged second guide roller 52 and a third adjacent to the first guide roller 46 arranged third guide roller 54 rotates.
  • the lateral edge portion 2b of a valve bag 2 is frictionally detected after leaving the transport roller 34 between the lower conveyor belt 44 and the upper conveyor belt 50, which are arranged closely adjacent to each other and the valve bag transported in the conveying direction 4.
  • valve bag 2 Since the valve bag 2 is only immediately after the transport roller 34, but then no longer supported, pivots the valve bag with the exception of the detected by the intermediate conveyor 40 lateral edge portion down and occupies a substantially vertical position. This is in FIG. 1 indicated with a dashed contour of a valve bag 2.
  • an injection conveyor 60 which serves to move the valve bag 2 through opening means 66 and to accelerate in the direction of the filler neck 6.
  • the Aufschuss choirer 60 consists in a conventional manner (s. Fig. 2 ) of two adjacent, arranged in a horizontal plane left and right belt drives 62, 64, between which the vertically depending part of the valve bag 2 is frictionally detected.
  • FIG. 2 shows in a plan view schematically the position of the lowermost valve bag 2.1 after pulling the front edge portion 2a from the magazine 8 at the point of detection between the transport roller 34 and the pressure roller 36.
  • a valve bag 2 is shown, the lateral edge portion 2b already from the intermediate conveyor 40 is detected and is still in horizontal alignment on a horizontal support surface 68.
  • a valve bag 2 the side edge portion 2b is detected by the intermediate conveyor 40, but otherwise is no longer on the support surface 68 and is vertically aligned by gravity.
  • FIG. 2 the Aufschuss choirer 60 with left belt drive 62 and right belt drive 64, between which the vertically depending part of a valve bag 2 is frictionally detected.
  • the opening means 66 arranged above the delivery conveyor 60 for opening the valve of a valve sack are in FIG FIG. 1 indicated.
  • the opening means 66 may consist in a manner known per se of divergently arranged mold sheets in the conveying direction 4, which are provided with suction openings which generate a vacuum Means are connectable to pull apart the side walls of a valve bag and so open the valve.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Zuführen und Aufstecken von Ventilsäcken entlang einer geradlinigen Förderrichtung auf einen Füllstutzen einer Füllmaschine, und auf ein entsprechendes Verfahren unter Verwendung der Vorrichtung.The invention relates to a device for feeding and attaching valve bags along a rectilinear conveying direction to a filler neck of a filling machine, and to a corresponding method using the device.

Bei einem aus DE 2 700 658 A1 bekannten Verfahren werden leere Ventilsäcke in einer Richtung quer zur eigentlichen Aufsteckrichtung, in der die Ventilsäcke auf den Füllstutzen aufgeschossen werden, zugeführt, was mit einer Richtungsänderung der Zuführbewegung verbunden ist und auch eine vorherige Vereinzelung der Ventilsäcke erfordert.At one off DE 2 700 658 A1 known methods are empty valve bags in a direction transverse to the actual Aufsteckrichtung in which the valve bags are shot onto the filler, supplied, which is associated with a change in direction of the feed movement and also requires a prior separation of the valve bags.

Weiterhin ist aus DE 1 944 715 A1 eine Vorrichtung zum Vereinzeln gestapelter, flacher Werkstücke bekannt, bei der die Werkstücke mittels eines vertikal bewegbaren Saugkastens aus einem Magazin gezogen und an eine Fördereinrichtung mit horizontal angeordneten Transportwalzen übergeben werden.Furthermore, it is off DE 1 944 715 A1 a device for separating stacked, flat workpieces known, in which the workpieces are pulled by means of a vertically movable suction box from a magazine and transferred to a conveyor with horizontally arranged transport rollers.

Die Aufgabe der Erfindung besteht darin, eine insoweit verbesserte Vorrichtung und ein entsprechendes Verfahren zu schaffen.The object of the invention is to provide a device improved so far and a corresponding method.

Zur Lösung dieser Aufgabe schlägt die Erfindung zunächst eine Vorrichtung nach Anspruch 1 vor.To solve this problem, the invention initially proposes a device according to claim 1.

Unter Transportwalze ist im Rahmen der Erfindung vorzugsweise eine Umlenkwalze des bevorzugt als Riemenförderer ausgebildeten Zwischenförderers mit Auflagebereichen größeren Durchmessers und Aufnahmebereichen kleineren Durchmessers zu verstehen. Die Auflagebereiche sind dabei fest mit der Umlenkrolle verbunden und übertragen das Moment der Transportwalze.In the context of the invention, a transport roller is preferably to be understood as a deflection roller of the intermediate conveyor, which is preferably designed as a belt conveyor, with support areas of larger diameter and receiving areas of smaller diameter. The support areas are firmly connected to the deflection roller and transmit the moment of the transport roller.

Das Magazin kann eine Vorderwand besitzen. Der Magazinboden, die Rückwand, die Vorderwand, soweit vorhanden, und / oder die Seitenwände können aus parallelen zylindrischen Stäben gebildet sein.The magazine can have a front wall. The magazine bottom, the rear wall, the front wall, if present, and / or the side walls may be formed of parallel cylindrical rods.

Es kann vorgesehen sein, dass eine quer zu Erstreckungsebenen der gestapelten Ventilsäcke verlaufende Stapelrichtung des Magazins unter einem Winkel von bis zu 45 Grad zur Vertikalen angeordnet ist, wobei der Sauggreifer bevorzugt um einen ebenso großen Winkel verschwenkbar ist. Die Vorderkante des Magazinbodens kann höhenversetzt gegenüber der Hinterkante sein, insbesondere höher als diese, bezogen auf den darunter befindlichen Sauggreifer.It can be provided that a stacking direction of the magazine extending transversely to extension planes of the stacked valve sacks is arranged at an angle of up to 45 degrees to the vertical, wherein the suction gripper is preferably pivotable about an equally large angle. The front edge of the magazine bottom can be offset in height from the rear edge, in particular higher than this, based on the suction gripper underneath.

Zweckmäßigerweise ist der Zwischenförderer zum Erfassen eines seitlichen, parallel zur Förderrichtung verlaufenden Randabschnitts eines Ventilsacks ausgebildet, der eine Breite von 5% bis 25% einer Sackbreite aufweisen kann.Conveniently, the intermediate conveyor for detecting a lateral, parallel to the conveying direction extending edge portion of a valve bag is formed, which may have a width of 5% to 25% of a bag width.

Der Zwischenförderer kann eine obere und eine untere Rollenleiste aufweisen, zwischen denen der seitliche Randabschnitt eines Ventilsacks reibschlüssig erfassbar ist. Alternativ kann vorgesehen sein, dass der Zwischenförderer einen unteren Riementrieb mit einem zwischen der Transportwalze und einer ersten Umlenkrolle mit horizontaler Drehachse umlaufend geführten unteren Transportriemen und einen oberen Riementrieb mit einem oberen Transportriemen, der zwischen einer benachbart zu der Andruckwalze und oberhalb der Transportwalze angeordneten zweiten Umlenkrolle und einer benachbart zu der ersten Umlenkrolle angeordneten dritten Umlenkrolle geführt ist, aufweist, wobei der seitliche Randabschnitt eines Ventilsacks zwischen einem Obertrum des unteren Transportriemens und einem Untertrum des oberen Transportriemens reibschlüssig erfassbar ist.The intermediate conveyor may have an upper and a lower roller bar, between which the lateral edge portion of a valve bag is frictionally detected. Alternatively it can be provided that the intermediate conveyor a lower belt drive with a circulating between the transport roller and a first deflection roller with horizontal axis of rotation guided lower conveyor belt and an upper belt drive with an upper conveyor belt, which is arranged between a adjacent to the pressure roller and above the transport roller second guide roller and a third deflecting roller arranged adjacent to the first deflecting roller, wherein the lateral edge section of a valve bag can be frictionally engaged between an upper run of the lower transporting belt and a lower run of the upper transporting belt.

Unmittelbar nach der Transportwalze kann eine horizontale Stützfläche angeordnet sein, die breiter als der seitliche Randabschnitt ist und deren Breite insbesondere der Sackbreite entspricht, wobei sich die Stützfläche nur über einen Teil der Länge des Zwischenförderers erstreckt, bspw. über max. 30% oder 50% dessen Länge, in Aufsteckrichtung gesehen.Immediately after the transport roller, a horizontal support surface may be arranged which is wider than the lateral edge portion and whose width corresponds in particular to the bag width, wherein the support surface extends over only a part of the length of the intermediate conveyor, for example. Over max. 30% or 50% of its length, seen in Aufsteckrichtung.

Im Bereich des Zwischenförderers kann ein Leitmittel, bspw. Leitblech, vorgesehen sein, zum Verschwenken eines durch den Zwischenförderer transportierten Ventilsacks in die Vertikale, oder zum Unterstützen der schwerkraftbedingten Schwenkbewegung, damit der Aufschussförderer den Ventilsack korrekt erfasst.In the region of the intermediate conveyor, a guide means, for example. Guide plate, may be provided for pivoting a valve bag transported by the intermediate conveyor into the vertical, or for supporting the gravitational pivoting movement, so that the Aufschussförderer correctly detects the valve bag.

Zweckmäßigerweise sind ein erster Antrieb für die vertikale Bewegung der Andruckwalze und ein zweiter Antrieb für die Bewegung des Sauggreifers von einer Steuerung koordiniert gesteuert, so dass die Andruckwalze gegen die Transportwalze andrückbar ist, sobald der Sauggreifer einen vorderen Sackabschnitt eines Ventilsacks zwischen Transportwalze und Andruckwalze bewegt hat.Conveniently, a first drive for the vertical movement of the pressure roller and a second drive for the movement of the suction pad are coordinated controlled by a controller, so that the pressure roller against the feed roller is pressed as soon as the suction pad has moved a front bag portion of a valve bag between the transport roller and pressure roller ,

Die Öffnungsmittel zum Öffnen eines Ventils eines aufzusteckenden Ventilsacks können in an sich bekannter Weise durch Formbleche gebildet sein, die mit Saugöffnungen versehen sind, welche wiederum mit einer Unterdruck erzeugenden Einrichtung koppelbar sind, so dass eine Öffnungswirkung erzielbar ist.The opening means for opening a valve of a valve sack to be stowed can be formed in a manner known per se by shaped sheets which are provided with suction openings are, which in turn can be coupled with a negative pressure generating device, so that an opening effect can be achieved.

Es kann vorgesehen sein, dass im Bereich des Zwischenförderers ein Leitmittel wie Leitblech oder Blasdüse zum Unterstützen eines Schwenkens eines an den horizontalen, seitlichen Randabschnitt angrenzenden Teil des Ventilsacks in eine vertikale Stellung angeordnet ist.It can be provided that in the region of the intermediate conveyor, a guide means such as baffle or blowing nozzle for supporting a pivoting of an adjacent to the horizontal, lateral edge portion portion of the valve bag is arranged in a vertical position.

Auch besteht die Möglichkeit, dass der Zwischenförderer einen ersten Zwischenförderer zum Tragen des Ventilsacks in voller Breite und einen zweiten Zwischenförderer zum Erfassen lediglich des seitlichen Randabschnitts des Ventilsacks umfasst.It is also possible for the intermediate conveyor to comprise a first intermediate conveyor for carrying the full width valve bag and a second intermediate conveyor for detecting only the lateral edge section of the valve bag.

In einer Variante kann vorgesehen sein, dass die Transportwalze mindestens zwei in axialer Richtung voneinander beabstandete, zum Zusammenwirken mit der Andruckwalze bestimmte, insbesondere zylindrische Auflagebereiche mit einem Auflagedurchmesser aufweist, zwischen denen mindestens ein Aufnahmebereich mit kleinerem Durchmesser gebildet ist, wobei der Sauggreifer zumindest teilweise in den mindestens einen Aufnahmebereich bewegbar ist. Dadurch kann der von dem Sauggreifer erfasste vordere Sackabschnitt eines untersten Ventilsacks zuverlässig in den Bereich zwischen Transport- und Andruckwalze gebracht werden, so dass auch bei einer unbeabsichtigten Verformung des vorderen Sackabschnitts stets eine sichere Übergabe des Ventilsacks an die Transportwalze erfolgt.In a variant, it can be provided that the transport roller has at least two axially spaced, intended for cooperation with the pressure roller, in particular cylindrical bearing areas with a support diameter, between which at least one receiving area is formed with a smaller diameter, wherein the suction pads at least partially in the at least one receiving area is movable. As a result, the front sack portion of a lowermost valve sack, which is detected by the suction gripper, can be reliably brought into the area between the transporting and pressure rollers, so that even when the front sack portion is unintentionally deformed, the valve sack is reliably transferred to the transport roller.

Bevorzugt ist vorgesehen, dass eine axiale Breite der Transportwalze einer Breite der Entnahmeöffnung zwischen den Seitenwänden des Magazins entspricht. Insbesondere kann die Breite der Transportwalze gleich dem gegenseitigen Abstand der Seitenwände des Magazins sein.It is preferably provided that an axial width of the transport roller corresponds to a width of the removal opening between the side walls of the magazine. In particular, the width of the transport roller may be equal to the mutual distance of the side walls of the magazine.

Der mindestens eine Aufnahmebereich ist bevorzugt zylindrisch und weist einen Durchmesser auf, der zwischen 10% und 90% des Auflagedurchmessers beträgt. Beispielsweise können drei Auflagebereiche und zwei zwischen je zwei Auflagebereichen angeordnete Aufnahmebereiche vorhanden sein.The at least one receiving region is preferably cylindrical and has a diameter which is between 10% and 90% of the contact diameter. For example, there may be three support areas and two receiving areas arranged between each two support areas.

Die der Erfindung zugrunde liegende Aufgabe wird weiterhin durch ein Verfahren nach Anspruch 13 gelöst.The object underlying the invention is further achieved by a method according to claim 13.

Zweckmäßigerweise wird die Andruckwalze gegen die Transportwalze bewegt, unmittelbar nachdem der vordere Sackabschnitt von dem Sauggreifer zwischen die Transportwalze und die Andruckwalze gebracht worden ist.Conveniently, the pressure roller is moved against the transport roller immediately after the front bag section has been brought by the suction pad between the transport roller and the pressure roller.

Bevorzugt ist vorgesehen, dass der übrige Teil des Ventilsacks schwerkraftbedingt und/oder durch ein Führungsblech oder mit Hilfe einer Blasdüse nach unten geschwenkt wird.It is preferably provided that the remaining part of the valve sack is pivoted downward by gravity and / or by a guide plate or with the aid of a blowing nozzle.

Ferner kann vorgesehen sein, dass der Zwischenförderer aus einem ersten und einem zweiten Zwischenförderer gebildet ist, wobei der erste Zwischenförderer den Ventilsack in seiner vollen Breite trägt und der zweite Zwischenförderer lediglich den seitlichen Randabschnitt des Ventilsacks erfasst, während der übrige Teil des Ventilsacks vertikal nach unten bewegt wird.Furthermore, it can be provided that the intermediate conveyor is formed from a first and a second intermediate conveyor, wherein the first intermediate conveyor carries the valve bag in its full width and the second intermediate conveyor detects only the lateral edge portion of the valve bag, while the remaining part of the valve bag vertically downwards is moved.

Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels erläutert, wobei auf eine Zeichnung Bezug genommen ist, in der

  • Figur 1 eine schematische Seitenansicht einer erfindungsgemäßen Vorrichtung zeigt, und
  • Figur 2 eine schematische Draufsicht auf die Vorrichtung nach Figur 1 zeigt.
The invention will be explained with reference to an embodiment, reference being made to a drawing in which
  • FIG. 1 a schematic side view of a device according to the invention shows, and
  • FIG. 2 a schematic plan view of the device according to FIG. 1 shows.

Figur 1 zeigt eine schematische Seitenansicht der erfindungsgemäßen Vorrichtung zum Aufstecken von Ventilsäcken 2 in einer Förderrichtung 4 auf einen Füllstutzen 6 einer nicht näher dargestellten Füllmaschine. Ein Magazin 8 dient der Aufnahme eines Stapels 10 von Ventilsäcken 2 und weist einen Magazinboden 12, Seitenwände (parallel zur Darstellungsebene), eine Vorderwand 14 und eine Rückwand 16 auf. In dem Magazinboden 12 ist eine Entnahmeöffnung 18 ausgebildet, die sich in Querrichtung zwischen den Seitenwänden erstreckt und nach vorn durch eine quer verlaufende Vorderkante 20 des Magazinbodens 12 begrenzt ist und nach hinten durch eine quer verlaufende Hinterkante 22 des Magazinbodens 12 begrenzt ist. Ein Abstand a der Vorderkante 20 von der Vorderwand 14 ist kleiner als ein Abstand b der Hinterkante 22 von der Rückwand 16. FIG. 1 shows a schematic side view of the device according to the invention for attaching valve bags 2 in a conveying direction 4 to a filler neck 6 of a filling machine, not shown. A magazine 8 serves to receive a stack 10 of valve bags 2 and has a magazine bottom 12, side walls (parallel to the plane of representation), a front wall 14 and a rear wall 16. In the magazine bottom 12 is a removal opening 18 is formed, which extends transversely between the side walls and is bounded to the front by a transverse leading edge 20 of the magazine bottom 12 and to the rear by a transverse trailing edge 22 of the magazine bottom 12 is limited. A distance a of the front edge 20 from the front wall 14 is smaller than a distance b of the rear edge 22 from the rear wall 16.

Das Magazin 8 ist bevorzugt nicht vertikal orientiert, sondern unter einem Winkel 23 von ca. 30 Grad entgegen der Förderrichtung 4, anders gesagt so, dass eine Stapelrichtung 24, die senkrecht zu den Erstreckungsebenen der einzelnen Ventilsäcke 2 und zum Magazinboden 12 verläuft, um etwa 30 Grad zur Vertikalen geneigt ist.The magazine 8 is preferably not oriented vertically, but at an angle 23 of about 30 degrees counter to the conveying direction 4, in other words such that a stacking direction 24, which is perpendicular to the extension planes of the individual valve bags 2 and the magazine bottom 12 to about Inclined 30 degrees to the vertical.

Etwa mittig unterhalb der Entnahmeöffnung 18 ist ein Sauggreifer 30 angeordnet, der vertikal bewegbar ist, was hier so realisiert ist, dass er um eine horizontal und quer zur Förderrichtung 4 angeordnete Schwenkachse 32 verschwenkbar ist, zwischen einer Greifstellung, in der der Sauggreifer 30 einen vorderen Sackabschnitt 2a eines untersten Ventilsacks 2.1 des Stapels 10, der sich noch vollständig innerhalb des Magazins 8 befindet, erfasst, und einer in Figur 1 dargestellten Übergabestellung, in der der Sauggreifer 30, nachdem er den vorderen Sackabschnitt 2a aus der Entnahmeöffnung 18 herausgezogen und an der Hinterkante 22 des Magazinbodens 12 abgeknickt hat, den vorderen Sackabschnitt 2a zwischen eine Transportwalze 34 und eine Andruckwalze 36 gebracht hat.Approximately centrally below the removal opening 18, a suction gripper 30 is arranged, which is vertically movable, which is realized here so that it is pivotable about a horizontally and transversely to the conveying direction 4 arranged pivot axis 32, between a gripping position, in which the suction pads 30 a front Sack portion 2a of a lowermost valve bag 2.1 of the stack 10, which is still completely within the magazine 8, detected, and a in FIG. 1 illustrated transfer position in which the suction pad 30, after he has pulled out the front bag section 2a from the removal opening 18 and bent at the trailing edge 22 of the magazine bottom 12, the front bag section 2a between a transport roller 34 and a pressure roller 36 has brought.

Die Transportwalze 34 weist drei jeweils in axialer Richtung voneinander beabstandete zylindrische Auflagebereiche 70 auf, die jeweils einen übereinstimmenden Auflagedurchmesser D besitzen. Zwischen jeweils zwei der drei Auflagebereiche 70 sind zwei Aufnahmebereiche 72 durch zylindrische Abschnitte der Transportwalze 34 mit kleinerem Durchmesser d gebildet. Der Sauggreifer 30 wiederum ist so ausgebildet, dass er im Zuge einer vertikalen Bewegung, in diesem Fall bei einer Schwenkbewegung um die Schwenkachse 32, zumindest teilweise in die Aufnahmebereiche 72 bewegbar ist und gewissermaßen in diese eintaucht, wie dies in Fig. 1 und 2 schematisch dargestellt ist. Insbesondere befinden sich keinerlei Saugelemente oder sonstige Teile des Sauggreifers innerhalb der Auflagebereiche 70 der Transportwalze 34, die ansonsten mit diesen kollidieren würden. Dadurch, dass der Sauggreifer 30 zumindest teilweise gewissermaßen in die Transportwalze 34 eintaucht oder in die Aufnahmebereiche 72 bewegt werden kann, besteht eine verbesserte Übergabesituation des von dem Sauggreifer 30 erfassten vorderen Sackabschnitts 2a eines Ventilsacks 2 an die Transportwalze 34 bzw. in den Bereich zwischen Transport- und Andruckwalze.The transport roller 34 has three cylindrical support regions 70 spaced from one another in the axial direction, each having a matching support diameter D. Between each two of the three bearing areas 70, two receiving areas 72 are formed by cylindrical portions of the transport roller 34 with a smaller diameter d. The suction gripper 30, in turn, is designed so that it is at least partially movable into the receiving areas 72 in the course of a vertical movement, in this case during a pivoting movement about the pivot axis 32, and to a certain extent immersed in the receiving areas, as shown in FIG Fig. 1 and 2 is shown schematically. In particular, there are no suction or other parts of the suction pad within the bearing areas 70 of the transport roller 34, which would otherwise collide with these. Due to the fact that the suction gripper 30 at least partially dips into the transport roller 34 to some extent or can be moved into the receiving areas 72, there is an improved transfer situation of the Suction gripper 30 detected front bag portion 2a of a valve bag 2 to the transport roller 34 and in the area between the transport and pressure roller.

Die Transportwalze 34 ist um eine horizontale, quer zur Förderrichtung 4 angeordnete Drehachse 34a dreh- und antreibbar. Die Andruckwalze 36 ist durch einen nicht näher dargestellten Antrieb in einer Andruck- bzw. Löserichtung 36a gegen die Transportwalze 34 und davon weg bewegbar, so dass der vordere Sackabschnitt 2a reibschlüssig von der Transportwalze 34 erfassbar ist, sobald er von der Andruckwalze 36 gegen diese gedrückt wird und der unterste Ventilsack 2a des Stapels 10 vollständig aus dem Magazin 8 herausziehbar ist.The transport roller 34 is rotatable and drivable about a horizontal, arranged transversely to the conveying direction 4 axis of rotation 34a. The pressure roller 36 is movable by a non-illustrated drive in a pressure or release direction 36a against the transport roller 34 and away, so that the front bag portion 2a frictionally detected by the transport roller 34 as soon as he pressed by the pressure roller 36 against this is and the bottom valve bag 2a of the stack 10 is completely withdrawn from the magazine 8.

Zweckmäßigerweise erstreckt sich die Transportwalze 34 über eine gesamte Sackbreite B eines Ventilsacks, s. Fig. 2, und auch die Andruckwalze 36 erstreckt sich zweckmäßigerweise über die gesamte Sackbreite, so dass der Ventilsack geradlinig in Aufsteckrichtung 4 aus dem Magazin gezogen wird.Appropriately, the transport roller 34 extends over an entire bag width B of a valve bag, s. Fig. 2 , And also the pressure roller 36 extends suitably over the entire bag width, so that the valve bag is pulled in a straight line in Aufsteckrichtung 4 from the magazine.

Anschließend an die Transportwalze 34 ist ein Zwischenförderer 40 angeordnet, der dazu dient, den Ventilsack in Förderrichtung 4 einer Aufschusseinrichtung zuzuführen, die einen Aufschussförderer und Mittel zum Öffnen des Ventilsacks umfasst. Eine Besonderheit des Zwischenförderers 40 besteht darin, dass er einen Ventilsack 2 nicht in voller Breite erfasst bzw. trägt, sondern lediglich einen seitlichen Randabschnitt 2b eines Ventilsacks, der in Förderrichtung 4 verläuft und im Verhältnis zur Sackbreite B eines Ventilsacks 2 klein ist und etwa zwischen 5% und 25% davon beträgt, beispielsweise 10% der Sackbreite B. Denkbar wäre auch, dass der Zwischenförderer aus zwei nacheinander angeordneten Förderern oder Fördererpaaren besteht. Zwischen dem ersten Fördererpaar wird der Ventilsack in seiner gesamten Breite erfasst und zwischen dem zweiten Fördererpaar wird lediglich ein seitlicher Randabschnitt 2b des Ventilsacks erfasst, während der übrige Teil des Ventilsacks vertikal nach unten bewegt wird (beispielsweise selbsttätig allein aufgrund der Schwerkraft oder unterstützt mit Hilfe eines Leitblechs oder einer Blasdüse).Subsequent to the transport roller 34, an intermediate conveyor 40 is arranged, which serves to supply the valve bag in the conveying direction 4 of a booster device, which comprises a Aufschussförderer and means for opening the valve bag. A special feature of the intermediate conveyor 40 is that it does not detect or carry a valve bag 2 in full width, but only a lateral edge portion 2b of a valve bag, which runs in the conveying direction 4 and in relation to the bag width B of a valve bag 2 is small and approximately between 5% and 25% thereof, for example, 10% of the bag width B. It would also be conceivable that the intermediate conveyor consists of two successively arranged conveyors or conveyor pairs. Between the first conveyor pair of the valve bag is detected in its entire width and between the second pair of conveyor only a side edge portion 2b of the valve bag is detected while the remaining part of the valve bag is moved vertically down (for example, automatically by gravity alone or assisted by a Baffle or a tuyere).

In dem dargestellten Ausführungsbeispiel ist der Zwischenförderer 40 von zwei Riementrieben gebildet, wobei ein unterer Riementrieb 42 einen unteren Transportriemen 44 aufweist, der zwischen der Transportwalze 34 und einer ersten Umlenkrolle 46 umläuft, und einen oberen Riementrieb 48 mit einem oberen Transportriemen 50, der zwischen einer benachbart zu der Andruckwalze 36 und oberhalb der Transportwalze 34 angeordneten zweiten Umlenkrolle 52 und einer benachbart zu der ersten Umlenkrolle 46 angeordneten dritten Umlenkrolle 54 umläuft. Der seitliche Randabschnitt 2b eines Ventilsacks 2 wird nach Verlassen der Transportwalze 34 zwischen dem unteren Transportriemen 44 und dem oberen Transportriemen 50, die eng benachbart zueinander angeordnet sind, reibschlüssig erfasst und der Ventilsack in Förderrichtung 4 transportiert. Da der Ventilsack 2 nur unmittelbar im Anschluss an die Transportwalze 34, danach aber nicht weiter abgestützt ist, schwenkt der Ventilsack mit Ausnahme des von dem Zwischenförderer 40 erfassten seitlichen Randabschnitts nach unten und nimmt eine im Wesentlichen vertikale Stellung ein. Dies ist in Figur 1 mit einer gestrichelten Kontur eines Ventilsacks 2 angedeutet.In the illustrated embodiment, the intermediate conveyor 40 is formed by two belt drives, wherein a lower belt drive 42 has a lower transport belt 44 which rotates between the transport roller 34 and a first guide roller 46, and an upper belt drive 48 with an upper transport belt 50, which between a adjacent to the pressure roller 36 and above the transport roller 34 arranged second guide roller 52 and a third adjacent to the first guide roller 46 arranged third guide roller 54 rotates. The lateral edge portion 2b of a valve bag 2 is frictionally detected after leaving the transport roller 34 between the lower conveyor belt 44 and the upper conveyor belt 50, which are arranged closely adjacent to each other and the valve bag transported in the conveying direction 4. Since the valve bag 2 is only immediately after the transport roller 34, but then no longer supported, pivots the valve bag with the exception of the detected by the intermediate conveyor 40 lateral edge portion down and occupies a substantially vertical position. This is in FIG. 1 indicated with a dashed contour of a valve bag 2.

Anschließend an den Zwischenförderer 40 ist ein Aufschussförderer 60 angeordnet, der dazu dient, den Ventilsack 2 durch Öffnungsmittel 66 zu bewegen und in Richtung des Füllstutzens 6 zu beschleunigen. Der Aufschussförderer 60 besteht in an sich bekannter Weise (s. Fig. 2) aus zwei benachbarten, in einer horizontalen Ebene angeordneten linken und rechten Riementrieben 62, 64, zwischen denen der vertikal herabhängende Teil des Ventilsacks 2 reibschlüssig erfassbar ist.Subsequent to the intermediate conveyor 40, there is arranged an injection conveyor 60, which serves to move the valve bag 2 through opening means 66 and to accelerate in the direction of the filler neck 6. The Aufschussförderer 60 consists in a conventional manner (s. Fig. 2 ) of two adjacent, arranged in a horizontal plane left and right belt drives 62, 64, between which the vertically depending part of the valve bag 2 is frictionally detected.

Figur 2 zeigt in einer Draufsicht schematisch die Stellung des untersten Ventilsacks 2.1 nach dem Herausziehen des vorderen Randabschnitts 2a aus dem Magazin 8 am Punkt der Erfassung zwischen der Transportwalze 34 und der Andruckwalze 36. Daneben ist ein Ventilsack 2 dargestellt, dessen seitlicher Randabschnitt 2b bereits von dem Zwischenförderer 40 erfasst ist und der sich noch in horizontaler Ausrichtung auf einer horizontalen Stützfläche 68 befindet. Weiter in Förderrichtung 4 zeigt Figur 2 einen Ventilsack 2, dessen seitlicher Randabschnitt 2b von dem Zwischenförderer 40 erfasst ist, der sich aber ansonsten nicht mehr auf der Stützfläche 68 befindet und schwerkraftbedingt vertikal ausgerichtet ist. FIG. 2 shows in a plan view schematically the position of the lowermost valve bag 2.1 after pulling the front edge portion 2a from the magazine 8 at the point of detection between the transport roller 34 and the pressure roller 36. In addition, a valve bag 2 is shown, the lateral edge portion 2b already from the intermediate conveyor 40 is detected and is still in horizontal alignment on a horizontal support surface 68. Next in the conveying direction 4 shows FIG. 2 a valve bag 2, the side edge portion 2b is detected by the intermediate conveyor 40, but otherwise is no longer on the support surface 68 and is vertically aligned by gravity.

Weiterhin zeigt Figur 2 den Aufschussförderer 60 mit linkem Riementrieb 62 und rechtem Riementrieb 64, zwischen denen der vertikal herabhängende Teil eines Ventilsacks 2 reibschlüssig erfasst ist. Die oberhalb des Aufschussförderers 60 angeordneten Öffnungsmittel 66 zum Öffnen des Ventils eines Ventilsacks sind in Figur 1 angedeutet. Die Öffnungsmittel 66 können in an sich bekannter Weise aus in Förderrichtung 4 divergierend angeordneten Formblechen bestehen, die mit Saugöffnungen versehen sind, welche mit einer Unterdruck erzeugenden Einrichtung verbindbar sind, um die Seitenwände eines Ventilsacks auseinanderzuziehen und so das Ventil zu öffnen.Further shows FIG. 2 the Aufschussförderer 60 with left belt drive 62 and right belt drive 64, between which the vertically depending part of a valve bag 2 is frictionally detected. The opening means 66 arranged above the delivery conveyor 60 for opening the valve of a valve sack are in FIG FIG. 1 indicated. The opening means 66 may consist in a manner known per se of divergently arranged mold sheets in the conveying direction 4, which are provided with suction openings which generate a vacuum Means are connectable to pull apart the side walls of a valve bag and so open the valve.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

22
Ventilsackvalve bag
2.12.1
unterster Ventilsackbottom valve bag
2a2a
vorderer Sackabschnittfront sack section
2b2 B
seitlicher Sackabschnittside bag section
44
Förderrichtungconveying direction
66
Füllstutzenfilling
88th
Magazinmagazine
1010
Stapelstack
1212
Magazinbodenmagazine bottom
1414
Vorderwandfront wall
1616
Rückwandrear wall
1818
Entnahmeöffnungremoval opening
2020
Vorderkanteleading edge
2222
Hinterkantetrailing edge
2323
Winkelcorner
2424
Stapelrichtungstacking direction
3030
SauggreiferSuction pads
3232
Schwenkachseswivel axis
3434
Transportwalzetransport roller
34a34a
Drehachseaxis of rotation
34b34b
Drehrichtungdirection of rotation
3636
Andruckwalzepressure roller
36a36a
Andruck-/LöserichtungPressing / releasing direction
4040
Zwischenfördererintermediate conveyor
4242
unterer Riementrieblower belt drive
4444
unterer Transportriemenlower transport belt
4646
erste Umlenkrollefirst pulley
4848
oberer Riementriebupper belt drive
5050
oberer TransportriemenUpper conveyor belt
5252
zweite Umlenkrollesecond deflection roller
5454
dritte Umlenkrollethird pulley
6060
AufschussfördererAufschussförderer
6262
linker Riementriebleft belt drive
6464
rechter Riementriebright belt drive
6666
Öffnungsmittelopening means
6868
Stützflächesupport surface
7070
Auflagebereichsupport area
7272
Aufnahmebescheidadmission notice
aa
Abstand (zwischen 20 und 14)Distance (between 20 and 14)
bb
Abstand (zwischen 22 und 16)Distance (between 22 and 16)
BB
Breite (von 2)Width (from 2)
DD
Auflagedurchmesser (Durchmesser von 70)Bearing diameter (diameter of 70)
DD
Durchmesser (von 72)Diameter (from 72)

Claims (15)

  1. Device for feeding and fitting valve sacks (2) collectively along a linear conveying direction (4) onto a filler nozzle (6) of a filling machine, with a magazine (8) for receiving a stack (10) of empty valve sacks (2), having two opposite side walls, a magazine bottom (12) and a rear wall (16), wherein a withdrawal opening (18) with a front edge (20) and a trailing edge (22), extending between the side walls, is arranged in the magazine bottom (12), with a rotatable transport roller (34), whose axis of rotation (34a) is horizontal and transverse to the conveying direction (4), and a pressure roller (36) arranged parallel to and above the transport roller (34), movable with a vertical movement component and rotatable around an axis of rotation running parallel to the axis of rotation (34a) of the transport roller (34), wherein at least one of the transport rollers (34) and the pressure rollers (36) can be driven in rotating fashion, with a suction gripper (30) that can be moved under the withdrawal opening with a vertical movement component, and can be pivoted around a horizontal pivot axis (32) and arranged transversely to the conveying direction (4) in order to grip and extract a front sack section (2a) of a lower-most valve sack (2.1) of the stack (10) from the withdrawal opening (18) while bending the front sack section (2a) at the trailing edge (22); it is possible to bring the front sack section (2a) between the transport roller (34) and the pressure roller (36), with an intermediate conveyor (40) adjoining the transport roller (34), working in the conveying direction (4) in order to grip the valve sack (2) in a friction-engaged manner, and with an opening conveyor (60), arranged after the intermediate conveyor (40), seen in the conveying direction (4), working in the conveying direction (4) for frictionally engaging side walls of a valve sack (2) and fitting the valve sack (2) onto the filler nozzle (6), opening means (66) to open a valve of the valve sack (2) being arranged in the vicinity of the opening conveyor (60).
  2. Device according to claim 1, characterized in that the intermediate conveyor (40) is designed to grip a lateral edge section (2b) running parallel to the conveying direction (4) of the valve sack (2), which may have a width of 5% to 25% of a sack width (B).
  3. Device according to claim 1 or 2, characterized in that a stack direction (24) of the magazine (8) running transversely to extension planes of the stacked valve sacks (2) is arranged at an angle of at most 45° to the vertical.
  4. Device according to one of the preceding claims, characterized in that the magazine (8) has a front wall (14).
  5. Device according to one of the preceding claims, characterized in that the magazine bottom (12), the rear wall (16), the front wall (14), as far as present, and/or the side walls are made from parallel cylindrical bars.
  6. Device according to one of the preceding claims, characterized in that a distance (a) of the front edge (20) from a front edge of the magazine bottom (12) is less than a distance (b) of the trailing edge (22) of the magazine bottom (12) from the rear wall (16).
  7. Device according to one of the preceding claims, characterized in that the intermediate conveyor has an upper and a lower roller strip between which the lateral edge section (2b) of a valve sack (2) can be gripped in a friction-engaged manner.
  8. Device according to one of claims 1 to 6, characterized in that the intermediate conveyor (40) has a lower belt drive (42) with lower transport belts (44) guided in a circulating manner between the transport roller (34) and a first guide roller (46) with horizontal axis of rotation and an upper belt drive (48) with an upper transport belt (50), which is guided between a second guide roller (52) adjacent to the pressure roller (36) and above the transport roller (34) and a third guide roller (54) adjacent to the first guide roller (46), wherein the lateral edge section (2b) of a valve sack (2) can be gripped in a friction-engaged manner between an upper run of the lower transport belt (44) and a lower run of the upper transport belt (50).
  9. Device according to one of the preceding claims, characterized in that a first drive for vertical movement of the pressure roller (36) and a second drive for movement of the suction gripper (30) are controlled in a coordinated manner by a controller, so that the pressure roller (36) can be pressed against the transport roller (34), as soon as the suction gripper (30) has moved a front sack section (2a) of a valve sack (2) between transport roller (34) and pressure roller (36).
  10. Device according to one of the preceding claims, characterized in that the opening means (66) are formed by profiled metal sheets provided with suction openings, which can be linked to equipment producing negative pressure.
  11. Device according to one of the preceding claims, characterized in that a guide means such as guide plate or blowing nozzle is arranged in the vicinity of the intermediate conveyor (40) for assisting pivoting of a part of the valve sack (2) bordering the lateral edge section (2b) into a vertical position.
  12. Device according to one of the preceding claims, characterized in that the intermediate conveyor comprises a first intermediate conveyor for bearing the valve sack (2) in full width (B) and a second intermediate conveyor for gripping only the lateral edge section (2b) of the valve sack (2).
  13. Method for feeding and fitting valve sacks (2) collectively along a linear conveying direction (4) onto a filler nozzle (6) of a filling machine, using a device in accordance with one of claims 1 to 12, wherein the front sack section (2a) of a lower-most valve sack (2.1) of a stack (10) of empty valve sacks (2) is gripped by the suction gripper (30), moved from the withdrawal opening (18) and is brought between the transport roller (34) and the receiving roller (36), pressed by the receiving roller (36) against the transport roller (34) and is pulled in the conveying direction (4) from the magazine (8), whereupon a lateral edge section (2b) of the valve sack (2) is gripped by the intermediate conveyor (40) and is transported along the conveying direction (4) in a horizontal position, the remaining part of the valve sack (2) being pivoted downward and vertical side walls of the valve sack (2) being gripped in a friction-engaged manner by the opening conveyor (60), the valve sack (2) being transported to the opening means (66), opened by this and fitted by the opening conveyor (60) along the conveying direction (4) onto the filler nozzle (6).
  14. Method according to claim 13, characterized in that the pressure roller (36) is moved against the transport roller (34), directly after the front sack section (2a) has been brought by the suction gripper (30) between the transport roller (34) and the pressure roller (36).
  15. Method according to claim 13 or 14, characterized in that the remaining part of the valve sack (2) is pivoted downward due to gravity and/or by a guide plate or by means of a blowing nozzle.
EP15003610.1A 2015-12-17 2015-12-17 Method and device for fitting valve sacks Active EP3181462B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES15003610T ES2750557T3 (en) 2015-12-17 2015-12-17 Device and procedure to fit valve bags
EP15003610.1A EP3181462B1 (en) 2015-12-17 2015-12-17 Method and device for fitting valve sacks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15003610.1A EP3181462B1 (en) 2015-12-17 2015-12-17 Method and device for fitting valve sacks

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EP3181462A1 EP3181462A1 (en) 2017-06-21
EP3181462B1 true EP3181462B1 (en) 2019-07-24

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ES (1) ES2750557T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH714198A1 (en) * 2017-09-28 2019-03-29 Ferag Ag Method and device for automated opening of suspension elements and provision of suspension elements in loading and transport means.
CN110065673A (en) * 2019-04-26 2019-07-30 广东交通职业技术学院 One kind taking out packed set automatically
CN112010064A (en) * 2020-09-11 2020-12-01 温州华思机械科技有限公司 Lower discharging device
CN117302659B (en) * 2023-11-28 2024-04-02 河南佰嘉新型节能材料有限公司 Valve bag filling opening supporting device

Citations (3)

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Publication number Priority date Publication date Assignee Title
US3566578A (en) * 1967-06-09 1971-03-02 Reed Paper Group Ltd Sack filling apparatus
DE2704137A1 (en) * 1977-02-02 1978-08-03 Natronag Papierprod Gmbh Valved sack extraction mechanism from magazine - has end portion sucked out before mechanically gripping for further extraction
EP0009521A1 (en) * 1978-09-29 1980-04-16 Peter John Niccolls Improvements in machines for applying bags or sacks to the discharge spouts of bag-filling machines

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
DE1944715A1 (en) * 1969-09-03 1971-03-11 Windmoeller & Hoelscher Device for separating stacked, flat, flexible workpieces
DE2700658C2 (en) 1977-01-08 1984-04-12 Haver & Boecker, 4740 Oelde Device for attaching empty valve bags to the filling spouts of a continuously rotating filling machine
US6976350B2 (en) * 2002-10-18 2005-12-20 Boss Packaging Inc. Bag presenter for a packaging machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3566578A (en) * 1967-06-09 1971-03-02 Reed Paper Group Ltd Sack filling apparatus
DE2704137A1 (en) * 1977-02-02 1978-08-03 Natronag Papierprod Gmbh Valved sack extraction mechanism from magazine - has end portion sucked out before mechanically gripping for further extraction
EP0009521A1 (en) * 1978-09-29 1980-04-16 Peter John Niccolls Improvements in machines for applying bags or sacks to the discharge spouts of bag-filling machines

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EP3181462A1 (en) 2017-06-21
ES2750557T3 (en) 2020-03-26

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