EP3269539B1 - Device for opening an end area of a tubular sack body - Google Patents

Device for opening an end area of a tubular sack body Download PDF

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Publication number
EP3269539B1
EP3269539B1 EP16179471.4A EP16179471A EP3269539B1 EP 3269539 B1 EP3269539 B1 EP 3269539B1 EP 16179471 A EP16179471 A EP 16179471A EP 3269539 B1 EP3269539 B1 EP 3269539B1
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EP
European Patent Office
Prior art keywords
suction devices
transporting direction
bag body
another
suction
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
EP16179471.4A
Other languages
German (de)
French (fr)
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EP3269539A1 (en
Inventor
Martin Reischer
Emanuel Jank
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.)
Starlinger and Co GmbH
Original Assignee
Starlinger and Co GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Starlinger and Co GmbH filed Critical Starlinger and Co GmbH
Priority to ES16179471T priority Critical patent/ES2726708T3/en
Priority to EP16179471.4A priority patent/EP3269539B1/en
Priority to TW106122729A priority patent/TWI720222B/en
Priority to US16/317,617 priority patent/US10960634B2/en
Priority to PCT/EP2017/067206 priority patent/WO2018011114A1/en
Priority to JP2019501572A priority patent/JP6956168B2/en
Priority to CN201780043646.XA priority patent/CN109476109B/en
Priority to BR112019000379-7A priority patent/BR112019000379B1/en
Priority to KR1020197000970A priority patent/KR102466798B1/en
Publication of EP3269539A1 publication Critical patent/EP3269539A1/en
Application granted granted Critical
Publication of EP3269539B1 publication Critical patent/EP3269539B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/003—Opening or distending bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • B31B2150/0014—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing transversally to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/003—Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents

Definitions

  • the invention relates to a device for opening an end region of a tubular bag body, according to the preamble of claim 1.
  • Chest bags also called cross-bottom bags, are bags of cuboidal shape which are made in bag making machines by providing tubular bag bodies whose end portions are opened and folded into cross bottoms. The bag bodies are guided lying flat when folding through the clothing plant, so that the tube walls of the tubular bag body abut each other, especially at the end portions of the tubular bag body.
  • the two tube walls are separated from each other at the end regions of the tubular bag body and folded over 180 ° with respect to each other, usually one of the two tube walls is folded over with the help of a spreading tool as a side flap on itself, creating an open bottom, in which the another hose wall forms a second side flap.
  • valve sheets can be inserted for the production of box valve bags, which are formed by further folding operations to a valve through which the bags can be filled by means of a filler neck.
  • the final bottom configuration is made by overlapping the bottom side flaps.
  • the overlapping bottom side flaps are glued or welded depending on the material.
  • bottom cover sheets can be placed on the overlapping bottom side flaps and adhesively bonded or welded thereto.
  • the end region of the tubular bag body during transport of the bag body in the transport direction can be opened on the transport device, wherein the carrier carriage when opening the end portion of the bag body per bag body always moves with this linearly for a short time.
  • a device for opening one end of a sack tube section according to the preamble of claim 1 is known from the document DE8234461U known.
  • the object is achieved by providing a device for opening an end portion of a tubular bag body with the features of claim 1.
  • Advantageous embodiments of the invention are set forth in the subclaims.
  • the device according to the invention is designed to open an end region of a tubular bag body, which end region extends between an open hose body end and a bottom center line.
  • a transport device transports the bag body with adjacent hose walls in a bag conveying plane with a transport speed in a transport direction, wherein the bottom center line is aligned in the transport direction.
  • On both sides of the bottom center line are arranged transversely to the transport direction reciprocally driven suction devices which are movable until it rests against the tube walls of the intermediate end portion of the bag body and thereafter, while exerting a suction force on the respective tube wall away from each other, whereby they move the Pull hose walls away from each other, wherein the suction devices are additionally movable in and against the transport direction.
  • the suction devices are mounted on first joints, wherein at each first joint, two pivot arms are pivotally hinged relative to each other, wherein each pivot arm is pivotally connected by means of a second joint with a Stellschwenkarm, each Stellstell arm is driven to move.
  • the suction devices can be driven at a higher speed, whereby compared to the prior art, the transport speed of the transport device further increased and thus the production rate of bags can be further increased.
  • the design of the device has the advantage that the mass of the device and in particular the mass of the moving parts of the device relative to the device known from the prior art can be reduced, whereby less energy must be expended to the end portions of the bag body to open.
  • each adjusting swivel arm is driven by its own actuator.
  • the suction devices are arbitrarily movable, taking into account the geometric dimensions of the Stellschwenkarme and the pivot arms transversely to the transport direction and in the transport direction in a plane.
  • the level is referred to below as a work plane.
  • the adjusting pivot arms are driven in pairs by an actuator, wherein optionally between the actuator and at least one of the Stellschwenkarme lever or gearbox are interposed.
  • the working plane is aligned at an angle to the bag conveying plane, wherein the angle is preferably adjustable. Due to the variability of the angle of the working plane, the device according to the invention can be particularly easily adapted for the mounting of different widths of floors and different width bag bodies. For narrow floors, an angle of 0 ° or a flat angle to the bag conveying plane is chosen, and for steeper floors a steeper angle can be set. With such a construction, it is further ensured that the opening device correctly transfers the opened end region to a subsequent processing station, in particular to a spreading device, without having to accept an unguided or undefined state between the opening of the end region and its further processing.
  • the orbit substantially in the form of an elliptical orbit.
  • the suction devices are mounted on mutually opposite holders, the device additionally having alignment arms, which hold the mutually opposite holders in the movement in the working plane parallel to each other.
  • the holder and the suction devices are mutually always aligned the same way, whereby the end portion of the tubular bag body can be opened in recurring accuracy.
  • the transport speed of the transport device and thus the production rate of sacks can be increased once again, if the pivot arms, the alignment arms and / or the Stellschwenkarme have recesses.
  • the pivot arms, the alignment arms and / or the Stellschwenkarm are made of a lightweight material, such as aluminum, magnesium or plastic.
  • the holder and the suction devices are as easily formed and made of aluminum or plastic, or a combination of these materials.
  • the present invention is preferably further developed such that opposing suction devices are arranged offset from one another in the transport direction, whereby they attack each other offset to the tube walls to be separated.
  • each actuator is formed by a stepper motor, a servo motor, a hydraulically driven motor or a pneumatically driven motor.
  • each holder carries a plurality of suction devices, wherein the suction devices are arranged on each holder in at least one row.
  • the holders are designed to be adjustable so that the rows of suction devices are aligned parallel to the bag conveying plane.
  • the advantage is obtained that the holders are always aligned with respect to the bag conveying plane.
  • soils can be formed at both opposite end regions of the tubular bag body, or a bottom can be formed only at one end region. If trays are to be formed at both end regions, a device according to the invention is used to open each of the end regions, the devices advantageously being used arranged offset from each other. This has the advantage that even with tubular bag bodies with a short length both end areas can be opened and can be dispensed with an adjustment of the device due to lack of space.
  • FIG. 1 the system 40 in a schematic side view
  • FIG. 2 show the system 40 in a schematic plan view.
  • the system 40 further comprises two positioning devices 2 in the form of baffles and two spreading devices 3.
  • the spreading devices 3 each comprise two rollers 4 and a belt drive 4 mounted on the rollers 4 and driven by the rollers 4, which holds and drives a spreading tool 6.
  • the embodiment of the spreading devices 3 and the embodiment of the setting-up devices 2 correspond to the embodiments of the spreading device and the positioning device known from the patent EP 2 441 574 B1 ,
  • a transport device 27 transports the bag body 8 with adjacent hose walls 15 continuously with a transport speed V in the transport direction 25 in a bag conveying plane 14.
  • the transport device 27 is formed by a belt conveyor.
  • the open end portions 7 of the bag body 8 are formed opposite to each other on the bag bodies 8, wherein one device 1 for opening an end portion 7 of a side of the bag body 8 is provided.
  • the end regions 7 each extend between a hose body end 17 and a bottom center line 16, wherein the bottom center lines 16 are each aligned in the transport direction 25.
  • the devices 1 are arranged offset to one another.
  • a device 1 comprises four Stellschwenkarme 9, four pivot arms 10, four actuators 11, two holders 12 and four suction devices 13, wherein in each case two suction devices 13 are arranged attached to a holder 12.
  • the two suction devices 13 each attached to a holder 12 are mounted in a row on this and stylized by two triangles.
  • one device 1 each has four alignment arms 24, which keep the holders 12 always parallel to one another during a movement of the holders 12.
  • the Ausrichtarme 24 are the sake of clarity, only in the FIGS. 4 to 6 shown.
  • the alignment arms 24 are movably connected to one another via ball bearings, to the holders 12 and to the actuators 11 or to a housing of the actuators 11.
  • each holder 12 is driven by two actuators 11, wherein the Stellschwenkarme 9 are each connected at one end to a drive shaft of an actuator 11 and are connected to the other ends each articulated by a second joint x2 with a pivot arm 10.
  • the pivot arms 10 are rotatably connected at one of their ends by means of a first joint x1 with the holders 12.
  • the actuators 11 are advantageously formed by stepper motors or servomotors. By the actuators 11, the holder 12 can be displaced as desired in a working plane 19, wherein the working plane 19 is aligned at an angle ⁇ relative to the bag conveying plane 14.
  • the actuators 11 are aligned parallel to each other and are attached by means not shown brackets to fixed elements of the transport device 27 that they are rotatably mounted relative to the bag conveying plane 14 and at different angles relative to the bag conveying plane 14 can be fixed. Furthermore, the actuators 11 are mounted relative to the stationary elements of the transport device 27, that a distance between the actuators 11 and the bag conveying plane 14 is variable.
  • the first joints x1 are formed clamped around the horizontal, whereby the rows of suction devices 13 can always be aligned parallel to the bag conveying plane 14 at different angles a.
  • the angle ⁇ of the working plane 19 and the distance of the working plane 19 with respect to the bag conveying plane 14 is arbitrarily adjustable, whereby the system 40 easy to differently wide bottoms and different width bag body 8 can be adjusted.
  • the bag body 8 are initially flat on the transport device 27, wherein the bag body 8 are transported at a transport speed V by the transport device 27 in the transport direction 25. In this state, the tube walls 15 of the tubular bag body 8 are on each other.
  • the bag body 8 are advantageously secured to the transport device 27 by means not shown holding against slipping. If a tubular bag body 8 passes the positioning device 2, the end region 7 of the bag body 8 is folded over substantially orthogonally along the bottom center line 16 to the rest of the bag body 8. See FIG. 2 ,
  • a first position 20 the suction device 13 of the devices 1 with the tube walls 15 of the folded end portions 7 of the bag body 8 brought into contact, the speed of the suction device 13 is driven by the actuators 11 adapted to the transport speed V.
  • the first position 20 is in FIG. 3 shown.
  • a suction applied by the suction device 13 on the tube walls 15 suction the tube walls 15 are sucked. From this time corresponds to a speed component of the holder 12 in the transport direction 25 of the transport speed V of the transport device 27, whereby warping of the tube walls 15 during opening of the end portion 7 is avoided.
  • the two holders 12 and the suction device 13 arranged thereon begin to move away from each other and thereby open the end region 7.
  • FIG. 2 shows in the upper part of an already opened by the device 1 end portion 7 of a
  • the suction force is interrupted and the suction devices 13 are controlled by the actuators 11 moves back to the first position 20, wherein the suction device 13 and the holder 12 for opening the end portion 7 and the subsequent return to the first position 20 a Depart essentially elliptical orbit 18.
  • the end regions 7 opened by the device 1 are then unfolded apart by the spreading device 3 and formed into open bottoms, whereby a bag bottom can be formed in further steps not shown in the figures.
  • FIG. 3 schematically shows substantially elliptical orbits 18, the holders 12 and the suction means 13 of the device 1 according to the invention used in the system 40 according to FIG. 1 for repeated opening of end portions 7 of successive bag bodies 8 depart.
  • the suction devices 13 are in the first position 20, the suction devices 13 essentially abut against the tube walls 15 of the end region 7. For reasons of clarity, the tube walls 15 are in FIG. 3 not shown.
  • the suction devices 13 and the holders 12 are arranged offset from one another to open an end region 7. By applying a suction force, one hose wall 15 is temporarily coupled, each with a holder 12.
  • a position of the Stellschwenkarme 9 and the pivot arms 10 in befindlichem in the first position 20 bracket is in FIG. 4 shown.
  • the actuators 11 are now controlled so that the holder 12 and the suction devices 13 follow the substantially elliptical orbit 18, wherein the holder 12 are held by the alignment arms 24 always parallel to each other.
  • the tube walls 15 are separated from each other, wherein the tube walls 15 are folded in the direction of the bag conveying plane 14 by the inclination of the working plane 19 to the bag conveying plane 14 by the angle ⁇ when driving off the substantially elliptical orbit.
  • FIG. 5 shows the holder 12 in a second position 21 already partially spaced apart. If the holders 12 and / or the suction devices 13 reach a third position 22, the suction force is interrupted and the suction devices 13 detach from the hose walls 15. The speed component of the holders 11 in the transport direction 25 when the substantially elliptical orbit 18 is moved away from the first position 20 to the third position 22 is equal to the transport speed V.
  • FIG. 6 shows the position of the Stellschwenkarme 9 and the pivot arms 10 in the third position 22. Subsequently, the direction of movement of the holder 12 is reversed, the holder 12 are stopped or braked in a fourth position 23 briefly. If the end region 7 of a following bag body 8 is at the height of the first position 20, the holders 12 are moved into the first position 20, whereby the end region 7 of the next bag body 8 can be opened.
  • FIG. 7 shows the position of the Stellschwenkarme 9 and the pivot arms 10 in the fourth position 23. The two holders 12 move synchronously along their respective elliptical path 18 to each other.
  • the holders 12 are briefly moved in their path in front of the third position 22 relative to the bag body 8 such that they hold the end area 7 open and no longer open it.
  • FIGS. 4 to 7 schematically show positions of pivot arms 10 and adjusting pivot arms 9 of the device 1 according to the invention used in the system 40 according to FIG. 1 when descending the substantially elliptical path 18 after FIG. 3 with the holders 12.
  • the pivot arms 10, the Stellschwenkarme 9 and the alignment arms 24 are formed by flat metal elements having recesses.

Description

Die Erfindung betrifft eine Vorrichtung zum Öffnen eines Endbereichs eines schlauchförmigen Sackkörpers, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a device for opening an end region of a tubular bag body, according to the preamble of claim 1.

Kastensäcke, auch Kreuzbodensäcke genannt, sind Säcke von quaderförmiger Gestalt, die in Sackkonfektionsanlagen hergestellt werden, indem schlauchförmige Sackkörper bereitgestellt werden, deren Endbereiche geöffnet und zu Kreuzböden gefaltet werden. Die Sackkörper werden beim Falten flach liegend durch die Konfektionsanlage geführt, so dass die Schlauchwände des schlauchförmigen Sackkörpers aneinander anliegen, insbesondere auch an den Endbereichen des schlauchförmigen Sackkörpers. Zur Bodenbildung werden die beiden Schlauchwände an den Endbereichen des schlauchförmigen Sackkörpers voneinander getrennt und in Bezug aufeinander um 180° umgeklappt, wobei zumeist eine der beiden Schlauchwände mit Hilfe eines Spreizwerkzeugs als Seitenklappe auf sich selbst umgeklappt wird, wodurch ein offener Boden entsteht, bei dem die andere Schlauchwand eine zweite Seitenklappe bildet. Durch das Umklappen einer Schlauchwand am Endbereich des schlauchförmigen Sackkörpers entsteht am vorderen und hinteren Teil dieses Endbereichs jeweils ein dreieckiger Umschlag. Diesen Vorgang nennt man in der Fachsprache auch "Aufziehen". In weiterer Folge können zur Herstellung von Kastenventilsäcken Ventilzettel eingelegt werden, die durch weitere Faltungsvorgänge zu einem Ventil ausgebildet werden, durch das hindurch die Säcke mittels eines Füllstutzens befüllbar sind. Die endgültige Bodenkonfiguration wird durch einander überlappendes Einschlagen der Bodenseitenklappen hergestellt. Die überlappenden Bodenseitenklappen werden je nach Material verklebt oder verschweißt. Alternativ oder zusätzlich können Bodendeckblätter auf die überlappenden Bodenseitenklappen aufgelegt und mit diesen verklebt oder verschweißt werden.Chest bags, also called cross-bottom bags, are bags of cuboidal shape which are made in bag making machines by providing tubular bag bodies whose end portions are opened and folded into cross bottoms. The bag bodies are guided lying flat when folding through the clothing plant, so that the tube walls of the tubular bag body abut each other, especially at the end portions of the tubular bag body. For bottom formation, the two tube walls are separated from each other at the end regions of the tubular bag body and folded over 180 ° with respect to each other, usually one of the two tube walls is folded over with the help of a spreading tool as a side flap on itself, creating an open bottom, in which the another hose wall forms a second side flap. By folding a tube wall at the end of the tubular bag body is formed at the front and rear of this end portion each have a triangular envelope. This process is called in the jargon also "Aufziehen". As a result, valve sheets can be inserted for the production of box valve bags, which are formed by further folding operations to a valve through which the bags can be filled by means of a filler neck. The final bottom configuration is made by overlapping the bottom side flaps. The overlapping bottom side flaps are glued or welded depending on the material. Alternatively or additionally, bottom cover sheets can be placed on the overlapping bottom side flaps and adhesively bonded or welded thereto.

Eine entsprechende Sackkonfektionsanlage ist in der AT 408 427 B beschrieben. Als nachteilig bei dieser bekannten Sackkonfektionsanlage hat sich jedoch der erforderliche taktweise Betrieb herausgestellt, der hohe Anforderung an die Antriebe stellt und den Durchsatz an zu verarbeitenden Sackkörpern limitiert. Der Zeitaufwand für das getaktete Aufziehen der Böden einschließlich der erforderlichen Fixierung der aufgezogenen Böden kann sogar eine obere Grenze für die Leistungsfähigkeit der gesamten Vorrichtung zur Herstellung von Säcken darstellen.A corresponding Sackkonfektionsanlage is in the AT 408 427 B described. A disadvantage of this known bag making plant, however, the required cyclic operation has been found that makes high demands on the drives and limits the throughput of processed to bag bodies. The time required for cyclic mounting of the floors, including the required fixation of the raised floors, may even be an upper limit to the performance of the entire sack making apparatus.

Dieser Nachteil wurde durch die in der EP 2 441 574 B1 offenbarte Vorrichtung zum Ausbilden von offenen Böden von Sackkörpern überwunden, bei der die Sackkörperabschnitte kontinuierlich gefördert werden. Die Bodenöffhungseinrichtung, mit deren Hilfe die beiden Lagen am Endbereich des schlauchförmigen Sackkörpers voneinander getrennt werden, ist gemäß diesem Dokument als pneumatische Bodenöffhungseinrichtung ausgebildet, bei der einander bezüglich der zu trennenden Materiallagen gegenüber liegende Saugeinrichtungen vorgesehen sind, die an den Schlauchwänden des Sackkörpers angreifen und in der Folge auseinander bewegt werden, wodurch die Schlauchwände voneinander getrennt werden, so dass das Spreizwerkzeug dazwischen eingreifen kann. Hinsichtlich der Ausführung der Bodenöffnungseinrichtung sind diesem Dokument jedoch keine Details zu entnehmen.This disadvantage was caused by in the EP 2 441 574 B1 has been overcome disclosed apparatus for forming open trays of bag bodies, in which the bag body sections are conveyed continuously. The Bodenöffhungseinrichtung, by means of which the two layers are separated from each other at the end of the tubular bag body is formed according to this document as a pneumatic Bodenöffhungseinrichtung, in which with respect to the material layers to be separated opposite suction devices are provided which engage the hose walls of the bag body and in the sequence are moved apart, whereby the tube walls are separated from each other, so that the spreading tool can intervene therebetween. With regard to the execution of the bottom opening device, however, no details can be found in this document.

In der Patentanmeldung EP 2 711 164 A1 ist eine elektrisch angetriebene Bodenöffnungsvorrichtung beschrieben, in der die Saugeinrichtungen an Haltern angebracht sind. Die Halter sind mittels paralleler Schwenkarme quer zur Transportrichtung hin und her bewegbar, wodurch der Endbereich des schlauchförmigen Sackkörpers geöffnet werden kann. Die parallelen Schwenkarme sind gelenkig auf einem Trägerschlitten gelagert, welcher in einer Führungsschiene in einer Schrägrichtung über einen Zahnriemen angetrieben hin und her bewegbar ist. Die Schrägrichtung steht in einem Winkel schräg zur Transportrichtung, wobei die Schrägrichtung in Transportrichtung ausgerichtet ist. Durch die Ausgestaltung der Vorrichtung kann der Endbereich des schlauchförmigen Sackkörpers während eines Transports des Sackkörpers in Transportrichtung auf der Transporteinrichtung geöffnet werden, wobei sich der Trägerschlitten beim Öffnen des Endbereichs des Sackkörpers je Sackkörper immer kurzzeitig mit diesem linear mitbewegt.In the patent application EP 2 711 164 A1 An electric powered floor opening device is described in which the suction devices are attached to holders. The holders are movable by means of parallel pivot arms transversely to the transport direction to and fro, whereby the end portion of the tubular bag body can be opened. The parallel pivot arms are articulated mounted on a carrier carriage, which is in a guide rail in a direction oblique via a toothed belt driven back and forth. The oblique direction is at an angle oblique to the transport direction, wherein the oblique direction is aligned in the transport direction. Due to the design of the device, the end region of the tubular bag body during transport of the bag body in the transport direction can be opened on the transport device, wherein the carrier carriage when opening the end portion of the bag body per bag body always moves with this linearly for a short time.

Als nachteilig bei der aus der Patentanmeldung EP 2 711 164 A1 bekannten Vorrichtung erweist sich, dass die Vorrichtung aufgrund einer hohen Masse der beim Öffnen der Endbereiche bewegten Teile, insbesondere bei hohen geforderten Produktionsraten, einem hohen Verschleiß unterworfen ist. Dieser Verschleiß wird aufgrund des hohen Anteils an Linearbewegungen noch erhöht. Der Antrieb umfasst auch Riemen, die ebenfalls der Abnutzung unterliegen. Dies alles führt zu einem erhöhten Wartungsaufwand und zu hohen Wartungskosten. Ferner ist durch die Ausbildung der Vorrichtung der Nachteil erhalten, dass aufgrund der hohen zu bewegenden Massen die Transportgeschwindigkeit der Transporteinrichtung limitiert wird, da bei hohen Transportgeschwindigkeiten die Vorrichtung nicht mehr mit der Transportgeschwindigkeit Schritt halten kann und eine Wiederholgenauigkeit beim Öffnen der Endbereiche verloren geht. Somit ist die Produktionsrate einer mit dieser bekannten Vorrichtung ausgestatteten Konfektionieranlage limitiert.As disadvantageous in the from the patent application EP 2 711 164 A1 known device proves that the device is subject to high wear due to a high mass of moving when opening the end portions, especially at high production rates required. This wear is further increased due to the high proportion of linear movements. The drive also includes belts that are also subject to wear. All this leads to increased maintenance and high maintenance costs. Furthermore, the design of the device has the disadvantage that due to the high masses to be moved, the transport speed of the transport device is limited because at high transport speeds, the device can no longer keep up with the transport speed and repeatability is lost when opening the end regions. Thus, the Production rate of equipped with this known device confectioning limited.

Eine Vorrichtung zum Öffnen eines Endes eines Sackschlauchabschnittes gemäß des Oberbegriffs des Anspruchs 1 ist aus dem Dokument DE8234461U bekannt.A device for opening one end of a sack tube section according to the preamble of claim 1 is known from the document DE8234461U known.

Es ist die Aufgabe der vorliegenden Erfindung eine Vorrichtung zum Öffnen eines Endbereichs eines schlauchförmigen Sackkörpers bereitzustellen, die das Öffnen von den Endbereichen der schlauchförmigen Sackkörper bei hohen Transportgeschwindigkeiten der Transporteinrichtung ermöglicht, um die Produktionsrate von Konfektionieranlagen zu erhöhen.It is the object of the present invention to provide a device for opening an end portion of a tubular bag body, which allows the opening of the end portions of the tubular bag body at high transport speeds of the transport device to increase the production rate of confectioning equipment.

Erfindungsgemäß wird die Aufgabe durch Bereitstellen einer Vorrichtung zum Öffnen eines Endbereichs eines schlauchförmigen Sackkörpers mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen dargelegt.According to the invention the object is achieved by providing a device for opening an end portion of a tubular bag body with the features of claim 1. Advantageous embodiments of the invention are set forth in the subclaims.

Die erfindungsgemäße Vorrichtung ist zum Öffnen eines Endbereichs eines schlauchförmigen Sackkörpers ausgebildet, welcher Endbereich sich zwischen einem offenen Schlauchkörperende und einer Bodenmittenlinie erstreckt. Eine Transporteinrichtung transportiert die Sackkörper mit aneinanderliegenden Schlauchwänden in einer Sackförderebene mit einer Transportgeschwindigkeit in einer Transportrichtung, wobei die Bodenmittenlinie in Transportrichtung ausgerichtet ist. Auf beiden Seiten der Bodenmittenlinie sind quer zur Transportrichtung hin und her beweglich angetriebene Saugeinrichtungen angeordnet, die bis zur Anlage an den Schlauchwänden des dazwischen befindlichen Endbereichs des Sackkörpers bewegbar sind und danach unter Ausübung einer Saugkraft auf die jeweilige Schlauchwand voneinander weg bewegbar sind, wodurch sie die Schlauchwände voneinander wegziehen, wobei die Saugeinrichtungen zusätzlich in und entgegen der Transportrichtung bewegbar sind. Die Saugeinrichtungen sind an ersten Gelenken montiert, wobei an jedem ersten Gelenk zwei Schwenkarme relativ zueinander schwenkbar angelenkt sind, wobei ein jeder Schwenkarm mittels eines zweiten Gelenks mit einem Stellschwenkarm schwenkbar verbunden ist, wobei jeder Stellschwenkarm beweglich angetrieben ist.The device according to the invention is designed to open an end region of a tubular bag body, which end region extends between an open hose body end and a bottom center line. A transport device transports the bag body with adjacent hose walls in a bag conveying plane with a transport speed in a transport direction, wherein the bottom center line is aligned in the transport direction. On both sides of the bottom center line are arranged transversely to the transport direction reciprocally driven suction devices which are movable until it rests against the tube walls of the intermediate end portion of the bag body and thereafter, while exerting a suction force on the respective tube wall away from each other, whereby they move the Pull hose walls away from each other, wherein the suction devices are additionally movable in and against the transport direction. The suction devices are mounted on first joints, wherein at each first joint, two pivot arms are pivotally hinged relative to each other, wherein each pivot arm is pivotally connected by means of a second joint with a Stellschwenkarm, each Stellstell arm is driven to move.

Durch die erfindungsgemäße Ausbildung der Vorrichtung können die Saugeinrichtungen mit einer höheren Geschwindigkeit angetrieben werden, wodurch gegenüber dem Stand der Technik die Transportgeschwindigkeit der Transporteinrichtung weiter gesteigert und somit die Produktionsrate von Säcken weiter erhöht werden kann.The inventive design of the device, the suction devices can be driven at a higher speed, whereby compared to the prior art, the transport speed of the transport device further increased and thus the production rate of bags can be further increased.

Ferner ist durch die Ausbildung der Vorrichtung der Vorteil erhalten, dass die Masse der Vorrichtung und insbesondere die Masse der bewegten Teile der Vorrichtung gegenüber der Vorrichtung bekannt aus dem Stand der Technik reduziert werden kann, wodurch weniger Energie aufgewendet werden muss, um die Endbereiche der Sackkörper zu öffnen.Furthermore, the design of the device has the advantage that the mass of the device and in particular the mass of the moving parts of the device relative to the device known from the prior art can be reduced, whereby less energy must be expended to the end portions of the bag body to open.

Vorteilhaft ist jeder Stellschwenkarm von einem eigenen Stellantrieb angetrieben. Hierdurch ist der Vorteil erhalten, dass die Saugeinrichtungen beliebig unter Berücksichtigung der geometrischen Abmessungen der Stellschwenkarme und der Schwenkarme quer zur Transportrichtung und in Transportrichtung in einer Ebene bewegbar sind. Die Ebene wird in weiterer Folge als Arbeitsebene bezeichnet. Durch die beliebige Bewegung der Saugeinrichtungen in der Arbeitsebene kann jeder Punkt in der Arbeitsebene erreicht werden, wodurch die Vorrichtung für verschiedene Sackformate geeignet ist.Advantageously, each adjusting swivel arm is driven by its own actuator. As a result, the advantage is obtained that the suction devices are arbitrarily movable, taking into account the geometric dimensions of the Stellschwenkarme and the pivot arms transversely to the transport direction and in the transport direction in a plane. The level is referred to below as a work plane. By arbitrary movement of the suction devices in the working plane, each point in the working plane can be achieved, whereby the device is suitable for different bag formats.

In einer weiteren Ausführungsvariante sind die Stellschwenkarme paarweise von einem Stellantrieb angetrieben, wobei optional zwischen dem Stellantrieb und zumindest einem der Stellschwenkarme Hebel oder Getriebe zwischengeschaltet sind. Hierdurch ist der Vorteil erhalten, dass auf eine aufwendige Steuerung der Stellantriebe verzichtet werden kann, um die Saugeinrichtungen immer auf einer exakt gleichen Bahn in der Arbeitsebene zu bewegen.In a further embodiment, the adjusting pivot arms are driven in pairs by an actuator, wherein optionally between the actuator and at least one of the Stellschwenkarme lever or gearbox are interposed. As a result, the advantage is obtained that can be dispensed with a complex control of the actuators to move the suction always on a precisely the same path in the working plane.

Vorteilhaft ist die Arbeitsebene in einem Winkel zur Sackförderebene ausgerichtet, wobei der Winkel bevorzugt einstellbar ist. Durch die Veränderbarkeit des Winkels der Arbeitsebene kann die erfindungsgemäße Vorrichtung besonders einfach für das Aufziehen von unterschiedlich breiten Böden und unterschiedlich breiten Sackkörpern angepasst werden. Für schmale Böden wird hierbei ein Winkel von 0° oder ein flacher Winkel gegen die Sackförderebene gewählt, und für breitere Böden kann ein steilerer Winkel eingestellt werden. Bei einer solchen Bauform ist weiters sichergestellt, dass die Öffnungseinrichtung den geöffneten Endbereich korrekt an eine nachfolgende Bearbeitungsstation, insbesondere an eine Spreizvorrichtung übergibt, ohne dass zwischen dem Öffnen des Endbereichs und seiner weiteren Bearbeitung ein ungeführter bzw. undefinierter Zustand in Kauf genommen werden muss.Advantageously, the working plane is aligned at an angle to the bag conveying plane, wherein the angle is preferably adjustable. Due to the variability of the angle of the working plane, the device according to the invention can be particularly easily adapted for the mounting of different widths of floors and different width bag bodies. For narrow floors, an angle of 0 ° or a flat angle to the bag conveying plane is chosen, and for steeper floors a steeper angle can be set. With such a construction, it is further ensured that the opening device correctly transfers the opened end region to a subsequent processing station, in particular to a spreading device, without having to accept an unguided or undefined state between the opening of the end region and its further processing.

Zweckmäßig sind die Saugeinrichtungen, insbesondere zum Öffnen der Endbereiche der Sackkörper, in einer Umlaufbahn bewegbar, die folgende Positionen umfasst:

  • eine erste Position, in der die Saugeinrichtungen an oder nahe der Bodenmittenlinie an den aneinander anliegenden Schlauchwänden des Endbereichs des Sackkörpers anliegen,
  • eine zweite Position, in der die Saugeinrichtungen gegenüber der ersten Position in Transportrichtung und voneinander weg bewegt worden sind,
  • eine dritte Position, in der die Saugwirkung der Saugeinrichtungen abgestellt wird, wobei die dritte Position an oder nahe einem Umkehrpunkt der Umlaufbahn von der Bewegung in der Transportrichtung in eine Bewegung entgegen der Transportrichtung liegt, und
  • eine vierte Position, die an oder nahe einem Umkehrpunkt der Umlaufbahn von der Bewegung entgegen der Transportrichtung in eine Bewegung in der Transportrichtung liegt. Kehren die Saugeinrichtungen von der vierten Position wieder in die erste Position zurück, so wurde zwischenzeitig von der Transporteinrichtung bereits ein weiterer Sackkörper in Stellung gebracht, dessen Endbereich beim darauffolgenden Abfahren der Positionen geöffnet wird. Durch das Abfahren der vier Positionen ist sichergestellt, dass zum Öffnen der Endbereiche der Sackböden immer die gleiche Umlaufbahn abgefahren wird, wodurch der Vorteil erhalten ist, dass die Endbereiche der schlauchförmigen Sackkörper immer korrekt geöffnet werden und durch eine weitere Bearbeitungsstation, insbesondere eine Spreizvorrichtung, ein offener Boden an den Endbereichen geformt werden kann. Ferner ist der Vorteil erhalten, dass eine Wegstrecke zum Öffnen des Endbereichs des schlauförmigen Sackkörpers und einem erneuten Zurückkehren in die erste Position zum Öffnen des Endbereichs eines darauf folgenden Sackkörpers möglichst kurz ist.
Suitably, the suction devices, in particular for opening the end regions of the bag body, are movable in an orbit comprising the following positions:
  • a first position, in which the suction devices abut against the adjacent tube walls of the end region of the bag body at or near the bottom center line,
  • a second position in which the suction devices have been moved in the transport direction and away from one another relative to the first position,
  • a third position, in which the suction effect of the suction devices is turned off, wherein the third position is at or near a reversal point of the orbit of the movement in the transport direction in a movement opposite to the transport direction, and
  • a fourth position, which is at or near a reversal point of the orbit from the movement opposite to the transport direction in a movement in the transport direction. If the suction devices return from the fourth position back to the first position, another bag body has already been brought into position by the transport device, the end region of which is opened during the subsequent movement of the positions. By traversing the four positions, it is ensured that the same orbits are always traveled to open the end regions of the bag bottoms, whereby the advantage is obtained that the end regions of the tubular bag bodies are always opened correctly and through a further processing station, in particular a spreading device open bottom can be formed at the end portions. Furthermore, the advantage is obtained that a distance to open the end region of the loop-shaped bag body and a return to the first position for opening the end portion of a subsequent bag body is as short as possible.

Vorteilhaft weist die Umlaufbahn im Wesentlichen die Form einer elliptischen Umlaufbahn auf.Advantageously, the orbit substantially in the form of an elliptical orbit.

Bevorzugt sind die Saugeinrichtungen an einander gegenüberliegenden Haltern montiert, wobei die Vorrichtung zusätzlich Ausrichtarme aufweist, welche die einander gegenüberliegenden Halter bei der Bewegung in der Arbeitsebene parallel zueinander halten. Hierdurch ist der Vorteil erhalten, dass die Halter und die Saugeinrichtungen zueinander zwangsweise immer gleich ausgerichtet sind, wodurch in wiederkehrender Genauigkeit der Endbereich des schlauchförmigen Sackkörpers geöffnet werden kann.Preferably, the suction devices are mounted on mutually opposite holders, the device additionally having alignment arms, which hold the mutually opposite holders in the movement in the working plane parallel to each other. In this way, the advantage is obtained that the holder and the suction devices are mutually always aligned the same way, whereby the end portion of the tubular bag body can be opened in recurring accuracy.

Die Transportgeschwindigkeit der Transporteinrichtung und somit die Produktionsrate an Säcken kann noch einmal erhöht werden, wenn die Schwenkarme, die Ausrichtarme und/oder die Stellschwenkarme Ausnehmungen aufweisen. Durch das Vorsehen von Ausnehmungen wird das Massenträgheitsmoment der Schwenkarme, der Ausrichtarme und der Stellschwenkarme reduziert, wodurch die gesamte Konstruktion schneller beschleunigbar ist. Vorteilhaft sind die Schwenkarme, die Ausrichtarme und/oder der Stellschwenkarm aus einem möglichst leichten Material, wie Aluminium, Magnesium oder Kunststoff gebildet.The transport speed of the transport device and thus the production rate of sacks can be increased once again, if the pivot arms, the alignment arms and / or the Stellschwenkarme have recesses. By providing recesses, the mass moment of inertia of the pivot arms, the alignment arms and the Stellschwenkarme is reduced, whereby the entire construction is faster accelerated. Advantageously, the pivot arms, the alignment arms and / or the Stellschwenkarm are made of a lightweight material, such as aluminum, magnesium or plastic.

Vorteilhaft sind die Halter und die Saugeinrichtungen möglichst leicht ausgebildet und aus Aluminium oder Kunststoff, oder einer Kombination dieser Materialien gebildet.Advantageously, the holder and the suction devices are as easily formed and made of aluminum or plastic, or a combination of these materials.

Insbesondere dann, wenn eine Bodenöffnungseinrichtung in einer Sackkonfektionsanlage für Sackkörper aus luftdurchlässigen Geweben eingesetzt werden soll, besteht die Gefahr, dass es beim Anlegen der Saugeinrichtungen an den Schlauchwänden zu einer Luftansaugung durch die Schlauchwände hindurch kommt, wodurch die Saugeinrichtungen nicht nur die ihnen zugeordnete Schlauchwand, sondern auch die dahinter befindliche Schlauchwand ansaugen und somit keine Trennung der Lagen erfolgt. Um dies zu verhindern, ist die vorliegende Erfindung bevorzugt dahingehend weitergebildet, dass einander gegenüberliegende Saugeinrichtungen in Transportrichtung zueinander versetzt angeordnet sind, wodurch sie zueinander versetzt an den zu trennenden Schlauchwänden angreifen.In particular, when a bottom opening device is to be used in a bag making machine for bag bodies made of air-permeable fabrics, there is the danger that when applying the suction devices on the hose walls to an air intake through the tube walls passes, whereby the suction devices not only their associated hose wall, but also suck in the hose wall located behind it and thus there is no separation of the layers. To prevent this, the present invention is preferably further developed such that opposing suction devices are arranged offset from one another in the transport direction, whereby they attack each other offset to the tube walls to be separated.

Bevorzugt ist je ein Stellantrieb durch einen Schrittmotor, einen Servomotor, einen hydraulisch angetriebenen Motor oder einen pneumatisch angetriebenen Motor gebildet.Preferably, each actuator is formed by a stepper motor, a servo motor, a hydraulically driven motor or a pneumatically driven motor.

Um zu vermeiden, dass sich die Schlauchwände des Endbereichs während des Öffnungsvorgangs verziehen, ist es günstig, wenn die Saugeinrichtungen beim Öffnen des Endbereichs -während ihres Kontakts mit den Schlauchwänden- mit einer Geschwindigkeit in der Arbeitsebene bewegt werden, deren Geschwindigkeitskomponente in der Transportrichtung gleich der Transportgeschwindigkeit ist.In order to avoid that the tube walls of the end region warp during the opening operation, it is favorable when the suction devices are moved during the opening of the end region-while in contact with the tube walls-at a speed in the working plane whose speed component in the transport direction is equal to the speed Transport speed is.

Vorteilhaft trägt jeder Halter mehrere Saugeinrichtungen, wobei die Saugeinrichtungen an jedem Halter in zumindest einer Reihe angeordnet sind. Hierdurch ist der Vorteil erhalten, dass bei Ausübung einer Saugkraft die Schlauchwände flächig angesaugt werden, wodurch eine Deformation der Schlauchstücke vermieden wird.Advantageously, each holder carries a plurality of suction devices, wherein the suction devices are arranged on each holder in at least one row. As a result, the advantage is obtained that, when a suction force is exerted, the tube walls are sucked flat, whereby a deformation of the tube pieces is avoided.

Bevorzugt sind die Halter so verstellbar ausgebildet, dass die Reihen an Saugeinrichtungen parallel zur Sackförderebene ausgerichtet sind. Hierdurch ist der Vorteil erhalten, dass die Halter gegenüber der Sackförderebene immer gleich ausgerichtet sind.Preferably, the holders are designed to be adjustable so that the rows of suction devices are aligned parallel to the bag conveying plane. As a result, the advantage is obtained that the holders are always aligned with respect to the bag conveying plane.

Je nach Anforderung an die herzustellenden Säcke können an beiden einander gegenüberliegenden Endbereichen des schlauchförmigen Sackkörpers Böden ausgeformt werden, oder nur an einem Endbereich ein Boden ausgeformt werden. Sollen an beiden Endbereichen Böden ausgeformt werden, wird zum Öffnen jedes der Endbereiche jeweils eine erfindungsgemäße Vorrichtung verwendet, wobei die Vorrichtungen vorteilhaft zueinander versetzt angeordnet sind. Hierdurch ist der Vorteil erhalten, dass auch bei schlauchförmigen Sackkörpern mit geringer Länge beide Endbereiche geöffnet werden können und auf eine Anpassung der Vorrichtung aufgrund von Platzmangel verzichtet werden kann.Depending on the requirements of the bags to be produced, soils can be formed at both opposite end regions of the tubular bag body, or a bottom can be formed only at one end region. If trays are to be formed at both end regions, a device according to the invention is used to open each of the end regions, the devices advantageously being used arranged offset from each other. This has the advantage that even with tubular bag bodies with a short length both end areas can be opened and can be dispensed with an adjustment of the device due to lack of space.

Weitere vorteilhafte Ausgestaltungen der erfindungsgemäßen Vorrichtung werden in weiterer Folge anhand der Figuren näher erläutert.

  • Figuren 1 und 2 zeigen schematische Ansichten einer Ausführungsvariante eines Systems zum Ausbilden von offenen Böden an offenen Endbereichen von schlauchförmigen Sackkörpern, in welchem System erfindungsgemäße Vorrichtungen zum Öffnen der Endbereiche der schlauchförmigen Sackkörper zum Einsatz gelangen.
  • Figur 3 zeigt schematisch im Wesentlichen elliptische Umlaufbahnen, die die Saugeinrichtungen der erfindungsgemäßen Vorrichtung eingesetzt in dem System gemäß Figur 1 zum wiederholenden Öffnen von Endbereichen von aufeinanderfolgenden Sackkörpern abfahren.
  • Figuren 4 bis 7 zeigen schematisch Stellungen von Schwenkarmen und Stellschwenkarmen der erfindungsgemäßen Vorrichtung eingesetzt in dem System gemäß Figur 1 beim Abfahren der im Wesentlichen elliptischen Umlaufbahn nach Figur 3.
Further advantageous embodiments of the device according to the invention will be explained in more detail with reference to the figures.
  • Figures 1 and 2 show schematic views of an embodiment of a system for forming open trays at open end portions of tubular bag bodies, in which system according to the invention device for opening the end portions of the tubular bag body used.
  • FIG. 3 schematically shows substantially elliptical orbits that the suction devices of the device according to the invention used in the system according to FIG. 1 for repeatedly opening end areas of successive bag bodies.
  • FIGS. 4 to 7 show schematically positions of pivot arms and Stellschwenkarmen the device according to the invention used in the system according to FIG. 1 when traveling down the substantially elliptical orbit FIG. 3 ,

Figuren 1 und 2 zeigen schematisch Ansichten einer Ausführungsvariante eines Systems 40 zum Ausbilden von offenen Böden an offenen Endbereichen 7 von schlauchförmigen Sackkörpern 8, in welchem System 40 erfindungsgemäße Vorrichtungen 1 zum Öffnen der Endbereiche 7 der schlauchförmigen Sackkörper 8 zum Einsatz gelangen, wobei Figur 1 das System 40 in einer schematischen Seitenansicht und Figur 2 das System 40 in einer schematischen Draufsicht zeigen. Das System 40 umfasst weiters zwei Aufstelleinrichtungen 2 in Form von Umlenkblechen und zwei Spreizvorrichtungen 3. Die Spreizvorrichtungen 3 umfassen jeweils zwei Rollen 4 und einen auf den Rollen 4 gelagerten und durch die Rollen 4 angetriebenen Riementrieb 5, der ein Spreizwerkzeug 6 hält und antreibt. Die Ausführungsform der Spreizvorrichtungen 3 und die Ausführungsform der Aufstelleinrichtungen 2 entsprechen den Ausführungsformen der Spreizvorrichtung und der Aufstelleinrichtung bekannt aus dem Patent EP 2 441 574 B1 . Figures 1 and 2 12 schematically show views of a variant of a system 40 for forming open bottoms at open end regions 7 of tubular bag bodies 8, in which system 40 devices 1 according to the invention are used for opening the end regions 7 of the tubular bag bodies 8 FIG. 1 the system 40 in a schematic side view and FIG. 2 show the system 40 in a schematic plan view. The system 40 further comprises two positioning devices 2 in the form of baffles and two spreading devices 3. The spreading devices 3 each comprise two rollers 4 and a belt drive 4 mounted on the rollers 4 and driven by the rollers 4, which holds and drives a spreading tool 6. The embodiment of the spreading devices 3 and the embodiment of the setting-up devices 2 correspond to the embodiments of the spreading device and the positioning device known from the patent EP 2 441 574 B1 ,

Eine Transporteinrichtung 27 transportiert die Sackkörper 8 mit aneinanderliegenden Schlauchwänden 15 kontinuierlich mit einer Transportgeschwindigkeit V in Transportrichtung 25 in einer Sackförderebene 14. Die Transporteinrichtung 27 ist durch einen Bandförderer gebildet.A transport device 27 transports the bag body 8 with adjacent hose walls 15 continuously with a transport speed V in the transport direction 25 in a bag conveying plane 14. The transport device 27 is formed by a belt conveyor.

Die offenen Endbereiche 7 der Sackkörper 8 sind einander gegenüberliegend an den Sackkörpern 8 ausgebildet, wobei je eine Vorrichtung 1 zum Öffnen eines Endbereichs 7 einer Seite des Sackkörpers 8 vorgesehen ist. Die Endbereiche 7 erstrecken sich jeweils zwischen einem Schlauchkörperende 17 und einer Bodenmittenlinie 16, wobei die Bodenmittenlinien 16 jeweils in Transportrichtung 25 ausgerichtet sind. Aus Gründen des Platzbedarfs der Vorrichtungen 1 sind die Vorrichtungen 1 zueinander versetzt angeordnet.The open end portions 7 of the bag body 8 are formed opposite to each other on the bag bodies 8, wherein one device 1 for opening an end portion 7 of a side of the bag body 8 is provided. The end regions 7 each extend between a hose body end 17 and a bottom center line 16, wherein the bottom center lines 16 are each aligned in the transport direction 25. For reasons of space requirements of the devices 1, the devices 1 are arranged offset to one another.

Je eine Vorrichtung 1 umfasst vier Stellschwenkarme 9, vier Schwenkarme 10, vier Stellantriebe 11, zwei Halter 12 und vier Saugeinrichtungen 13, wobei jeweils zwei Saugeinrichtungen 13 an einem Halter 12 angebracht angeordnet sind. Die zwei Saugeinrichtungen 13 jeweils angebracht an einem Halter 12 sind in einer Reihe an diesem angebracht und durch zwei Dreiecke stilisiert. Ferner weist je eine Vorrichtung 1 jeweils vier Ausrichtarme 24 auf, die die Halter 12 während einer Bewegung der Halter 12 immer parallel zueinander halten. Die Ausrichtarme 24 sind der Übersichtlichkeit halber nur in den Figuren 4 bis 6 dargestellt. Die Ausrichtarme 24 sind beweglich vorzugsweise über Kugellager miteinander, mit den Haltern 12 und mit den Stellantrieben 11 oder einem Gehäuse der Stellantriebe 11 verbunden.Depending on a device 1 comprises four Stellschwenkarme 9, four pivot arms 10, four actuators 11, two holders 12 and four suction devices 13, wherein in each case two suction devices 13 are arranged attached to a holder 12. The two suction devices 13 each attached to a holder 12 are mounted in a row on this and stylized by two triangles. Furthermore, one device 1 each has four alignment arms 24, which keep the holders 12 always parallel to one another during a movement of the holders 12. The Ausrichtarme 24 are the sake of clarity, only in the FIGS. 4 to 6 shown. The alignment arms 24 are movably connected to one another via ball bearings, to the holders 12 and to the actuators 11 or to a housing of the actuators 11.

Wie aus Figur 2 ersichtlich wird je ein Halter 12 mittels zwei Stellantrieben 11 angetrieben, wobei die Stellschwenkarme 9 jeweils mit einem Ende mit einer Antriebswelle eines Stellantriebs 11 verbunden sind und mit dem anderen Enden jeweils gelenkig mittels eines zweiten Gelenks x2 mit einem Schwenkarm 10 verbunden sind. Die Schwenkarme 10 sind an einem ihrer Enden mittels eines ersten Gelenks x1 drehbar mit den Haltern 12 verbunden. Die Stellantriebe 11 sind vorteilhaft durch Schrittmotoren oder Servomotoren gebildet. Durch die Stellantriebe 11 können die Halter 12 beliebig in einer Arbeitsebene 19 verlagert werden, wobei die Arbeitsebene 19 in einem Winkel α gegenüber der Sackförderebene 14 ausgerichtet ist.How out FIG. 2 each holder 12 is driven by two actuators 11, wherein the Stellschwenkarme 9 are each connected at one end to a drive shaft of an actuator 11 and are connected to the other ends each articulated by a second joint x2 with a pivot arm 10. The pivot arms 10 are rotatably connected at one of their ends by means of a first joint x1 with the holders 12. The actuators 11 are advantageously formed by stepper motors or servomotors. By the actuators 11, the holder 12 can be displaced as desired in a working plane 19, wherein the working plane 19 is aligned at an angle α relative to the bag conveying plane 14.

Die Stellantriebe 11 sind zueinander parallel ausgerichtet und sind so mittels nicht dargestellter Halterungen an feststehenden Elementen der Transporteinrichtung 27 angebracht, dass diese drehbar gegenüber der Sackförderebene 14 gelagert und in verschiedenen Winkeln gegenüber der Sackförderebene 14 fixierbar sind. Ferner sind die Stellantriebe 11 so gegenüber den feststehenden Elementen der Transporteinrichtung 27 angebracht, dass ein Abstand zwischen Stellantrieben 11 und der Sackförderebene 14 veränderbar ist. Die ersten Gelenke x1 sind um die Horizontale festklemmbar ausgebildet, wodurch die Reihen an Saugeinrichtungen 13 bei unterschiedlichen Winkeln a immer parallel zur Sackförderebene 14 ausgerichtet werden können.The actuators 11 are aligned parallel to each other and are attached by means not shown brackets to fixed elements of the transport device 27 that they are rotatably mounted relative to the bag conveying plane 14 and at different angles relative to the bag conveying plane 14 can be fixed. Furthermore, the actuators 11 are mounted relative to the stationary elements of the transport device 27, that a distance between the actuators 11 and the bag conveying plane 14 is variable. The first joints x1 are formed clamped around the horizontal, whereby the rows of suction devices 13 can always be aligned parallel to the bag conveying plane 14 at different angles a.

Durch Veränderung des Winkels der Stellantriebe 11 und des Abstands der Stellantriebe 11 gegenüber der Sackförderebene 14 ist der Winkel α der Arbeitsebene 19 und der Abstand der Arbeitsebene 19 gegenüber der Sackförderebene 14 beliebig anpassbar, wodurch das System 40 einfach an unterschiedlich breite Böden und unterschiedlich breite Sackkörper 8 angepasst werden kann.By changing the angle of the actuators 11 and the distance of the actuators 11 relative to the bag conveying plane 14, the angle α of the working plane 19 and the distance of the working plane 19 with respect to the bag conveying plane 14 is arbitrarily adjustable, whereby the system 40 easy to differently wide bottoms and different width bag body 8 can be adjusted.

In weiterer Folge wird der Vorgang zum Auffalten der Endbereiche 7 eines schlauchförmigen Sackkörpers 8 näher beschrieben. Der Einfachheit halber wird dieser Vorgang nur anhand des in Transportrichtung 25 gesehenen linken Endbereichs 7 beschrieben. Der Auffaltvorgang beim in Transportrichtung 25 gesehen rechten Endbereich 7 erfolgt genau gleich, aber aufgrund der versetzten Anordnung der Aufstelleinrichtungen 2, der erfindungsgemäßen Vorrichtungen 1 und der Spreizvorrichtungen 3 zeitlich versetzt.Subsequently, the process for unfolding the end regions 7 of a tubular bag body 8 will be described in more detail. For the sake of simplicity, this process will be described only with reference to the left end region 7 seen in the transport direction 25. The Auffaltvorgang when viewed in the direction of transport 25 right end portion 7 is exactly the same, but staggered due to the staggered arrangement of Aufstellinrichtungen 2, the inventive devices 1 and the spreading devices 3.

Die Sackkörper 8 liegen zunächst flach auf der Transporteinrichtung 27 auf, wobei die Sackkörper 8 mit einer Transportgeschwindigkeit V durch die Transporteinrichtung 27 in die Transportrichtung 25 befördert werden. In diesem Zustand liegen die Schlauchwände 15 der schlauchförmigen Sackkörper 8 aufeinander auf. Die Sackkörper 8 werden vorteilhaft auf der Transporteinrichtung 27 durch nicht dargestellte Haltemittel gegen Verrutschen gesichert. Passiert ein schlauchförmiger Sackkörper 8 die Aufstelleinrichtung 2, wird der Endbereich 7 des Sackkörpers 8 im Wesentlichen orthogonal entlang der Bodenmittenlinie 16 zum Rest des Sackkörpers 8 umgefaltet. Siehe dazu Figur 2.The bag body 8 are initially flat on the transport device 27, wherein the bag body 8 are transported at a transport speed V by the transport device 27 in the transport direction 25. In this state, the tube walls 15 of the tubular bag body 8 are on each other. The bag body 8 are advantageously secured to the transport device 27 by means not shown holding against slipping. If a tubular bag body 8 passes the positioning device 2, the end region 7 of the bag body 8 is folded over substantially orthogonally along the bottom center line 16 to the rest of the bag body 8. See FIG. 2 ,

In weiterer Folge werden in einer ersten Position 20 die Saugeinrichtung 13 der Vorrichtungen 1 mit den Schlauchwänden 15 der umgefalteten Endbereiche 7 des Sackkörpers 8 in Kontakt gebracht, wobei die Geschwindigkeit der Saugeinrichtung 13 angetrieben durch die Stellantriebe 11 an die Transportgeschwindigkeit V angepasst ist. Die erste Position 20 ist in Figur 3 dargestellt. Durch eine durch die Saugeinrichtung 13 auf die Schlauchwände 15 aufgebrachte Saugkraft werden die Schlauchwände 15 angesaugt. Ab diesem Zeitpunkt entspricht eine Geschwindigkeitskomponente der Halter 12 in Transportrichtung 25 der Transportgeschwindigkeit V der Transporteinrichtung 27, wodurch ein Verziehen der Schlauchwände 15 beim Öffnen des Endbereichs 7 vermieden wird. Dann beginnen sich die beiden Halter 12 und die an ihnen angeordneten Saugeinrichtung 13 voneinander wegzubewegen und öffnen dadurch den Endbereich 7. Figur 2 zeigt im oberen Bereich eine bereits durch die Vorrichtung 1 geöffneten Endbereich 7 eines schlauchförmigen Sackkörpers 8. Anschließend wird die Saugkraft unterbrochen und die Saugeinrichtungen 13 werden gesteuert durch die Stellantriebe 11 zurück in die erste Position 20 bewegt, wobei die Saugeinrichtung 13 bzw. die Halter 12 zum Öffnen des Endbereichs 7 und der anschließenden Rückkehr zur ersten Position 20 eine im Wesentlichen elliptische Umlaufbahn 18 abfahren. Siehe dazu Figur 3. Die durch die Vorrichtung 1 geöffneten Endbereiche 7 werden anschließend durch die Spreizeinrichtung 3 auseinander gefaltet und zu offenen Böden geformt, wodurch in weiteren nicht in den Figuren dargestellten Schritten ein Sackboden gebildet werden kann.Subsequently, in a first position 20, the suction device 13 of the devices 1 with the tube walls 15 of the folded end portions 7 of the bag body 8 brought into contact, the speed of the suction device 13 is driven by the actuators 11 adapted to the transport speed V. The first position 20 is in FIG. 3 shown. By a suction applied by the suction device 13 on the tube walls 15 suction the tube walls 15 are sucked. From this time corresponds to a speed component of the holder 12 in the transport direction 25 of the transport speed V of the transport device 27, whereby warping of the tube walls 15 during opening of the end portion 7 is avoided. Then, the two holders 12 and the suction device 13 arranged thereon begin to move away from each other and thereby open the end region 7. FIG. 2 shows in the upper part of an already opened by the device 1 end portion 7 of a The suction force is interrupted and the suction devices 13 are controlled by the actuators 11 moves back to the first position 20, wherein the suction device 13 and the holder 12 for opening the end portion 7 and the subsequent return to the first position 20 a Depart essentially elliptical orbit 18. See FIG. 3 , The end regions 7 opened by the device 1 are then unfolded apart by the spreading device 3 and formed into open bottoms, whereby a bag bottom can be formed in further steps not shown in the figures.

Figur 3 zeigt schematisch im Wesentlichen elliptische Umlaufbahnen 18, die die Halter 12 und die Saugeinrichtungen 13 der erfindungsgemäßen Vorrichtung 1 eingesetzt in dem System 40 gemäß Figur 1 zum wiederholenden Öffnen von Endbereichen 7 von aufeinanderfolgenden Sackkörpern 8 abfahren. FIG. 3 schematically shows substantially elliptical orbits 18, the holders 12 and the suction means 13 of the device 1 according to the invention used in the system 40 according to FIG FIG. 1 for repeated opening of end portions 7 of successive bag bodies 8 depart.

Befinden sich die Saugeinrichtungen 13 in der ersten Position 20, liegen die Saugeinrichtungen 13 im Wesentlichen an den Schlauchwänden 15 des Endbereichs 7 an. Aus Gründen der bessern Übersichtlichkeit sind die Schlauchwände 15 in Figur 3 nicht dargestellt. Um ein Ansaugen einer Schlauchwand 15 durch eine andere Schlauchwand 15 hindurch zu vermeiden, wodurch in weiterer Folge keine Trennung der Lagen erfolgen würde, sind die Saugeinrichtungen 13 bzw. die Halter 12 zum öffnen eines Endbereichs 7 zueinander versetzt angeordnet. Durch Aufbringen einer Saugkraft wird je eine Schlauchwand 15 mit je einem Halter 12 temporär gekoppelt. Eine Stellung der Stellschwenkarme 9 und der Schwenkarme 10 bei in der ersten Position 20 befindlicher Halterung ist in Figur 4 dargestellt. Zum Öffnen des Endbereichs 7 werden die Stellantriebe 11 nun so angesteuert, dass die Halter 12 bzw. die Saugeinrichtungen 13 der im Wesentlichen elliptischen Umlaufbahn 18 folgen, wobei die Halter 12 durch die Ausrichtarme 24 immer parallel zueinander gehalten werden. Hierdurch werden die Schlauchwände 15 voneinander getrennt, wobei durch die Neigung der Arbeitsebene 19 zur Sackförderebene 14 um den Winkel α beim Abfahren der im Wesentlichen elliptischen Umlaufbahn 18 die Schlauchwände 15 in Richtung der Sackförderebene 14 geklappt werden.If the suction devices 13 are in the first position 20, the suction devices 13 essentially abut against the tube walls 15 of the end region 7. For reasons of clarity, the tube walls 15 are in FIG. 3 not shown. In order to avoid suction of a hose wall 15 through another hose wall 15, which would subsequently result in no separation of the layers, the suction devices 13 and the holders 12 are arranged offset from one another to open an end region 7. By applying a suction force, one hose wall 15 is temporarily coupled, each with a holder 12. A position of the Stellschwenkarme 9 and the pivot arms 10 in befindlichem in the first position 20 bracket is in FIG. 4 shown. To open the end portion 7, the actuators 11 are now controlled so that the holder 12 and the suction devices 13 follow the substantially elliptical orbit 18, wherein the holder 12 are held by the alignment arms 24 always parallel to each other. As a result, the tube walls 15 are separated from each other, wherein the tube walls 15 are folded in the direction of the bag conveying plane 14 by the inclination of the working plane 19 to the bag conveying plane 14 by the angle α when driving off the substantially elliptical orbit.

Figur 5 zeigt die Halter 12 in einer zweiten Position 21 schon teilweise beabstandet zueinander. Erreichen die Halter 12 bzw. die Saugeinrichtungen 13 eine dritte Position 22 wird die Saugkraft unterbrochen und die Saugeinrichtungen 13 lösen sich von den Schlauchwänden 15. Die Geschwindigkeitskomponente der Halter 11 in Transportrichtung 25 bei dem Abfahren der im Wesentlichen elliptischen Umlaufbahn 18 von der ersten Position 20 zur dritten Position 22 ist gleich der Transportgeschwindigkeit V. FIG. 5 shows the holder 12 in a second position 21 already partially spaced apart. If the holders 12 and / or the suction devices 13 reach a third position 22, the suction force is interrupted and the suction devices 13 detach from the hose walls 15. The speed component of the holders 11 in the transport direction 25 when the substantially elliptical orbit 18 is moved away from the first position 20 to the third position 22 is equal to the transport speed V.

Figur 6 zeigt die Stellung der Stellschwenkarme 9 und der Schwenkarme 10 in der dritten Position 22. In weiterer Folge wird die Bewegungsrichtung der Halter 12 umgekehrt, wobei die Halter 12 in einer vierten Position 23 kurzzeitig gestoppt oder abgebremst werden. Befindet sich der Endbereich 7 eines darauf folgenden Sackkörpers 8 auf Höhe der ersten Position 20, werden die Halter 12 in die erste Position 20 bewegt, wodurch der Endbereich 7 des nächsten Sackkörpers 8 geöffnet werden kann. Figur 7 zeigt die Stellung der Stellschwenkarme 9 und der Schwenkarme 10 in der vierten Position 23. Die zwei Halter 12 bewegen sich synchron entlang ihrer jeweiligen elliptischen Bahn 18 zueinander. FIG. 6 shows the position of the Stellschwenkarme 9 and the pivot arms 10 in the third position 22. Subsequently, the direction of movement of the holder 12 is reversed, the holder 12 are stopped or braked in a fourth position 23 briefly. If the end region 7 of a following bag body 8 is at the height of the first position 20, the holders 12 are moved into the first position 20, whereby the end region 7 of the next bag body 8 can be opened. FIG. 7 shows the position of the Stellschwenkarme 9 and the pivot arms 10 in the fourth position 23. The two holders 12 move synchronously along their respective elliptical path 18 to each other.

In einer weiteren Ausführungsvariante werden die Halter 12 in ihrer Bahn kurzzeitig vor der dritten Position 22 so gegenüber dem Sackkörper 8 bewegt, dass diese den Endbereich 7 offen halten und nicht mehr weiter öffnen.In a further embodiment variant, the holders 12 are briefly moved in their path in front of the third position 22 relative to the bag body 8 such that they hold the end area 7 open and no longer open it.

Figuren 4 bis 7 zeigen schematisch Stellungen von Schwenkarmen 10 und Stellschwenkarmen 9 der erfindungsgemäßen Vorrichtung 1 eingesetzt in dem System 40 gemäß Figur 1 beim Abfahren der im Wesentlichen elliptischen Bahn 18 nach Figur 3 mit den Haltern 12. FIGS. 4 to 7 schematically show positions of pivot arms 10 and adjusting pivot arms 9 of the device 1 according to the invention used in the system 40 according to FIG. 1 when descending the substantially elliptical path 18 after FIG. 3 with the holders 12.

In einer bevorzugten Ausführungsvariante sind die Schwenkarme 10, die Stellschwenkarme 9 und die Ausrichtarme 24 durch flächige Metallelemente gebildet, welche Ausnehmungen aufweisen. Hierdurch ist der Vorteil erhalten, dass die Masse der bewegten Teile reduziert wird, wodurch zum einen kleine Stellantriebe 11 vorgesehen werden können und zum anderen hohe Verfahrgeschwindigkeiten der Halter 12 erreicht werden können.In a preferred embodiment, the pivot arms 10, the Stellschwenkarme 9 and the alignment arms 24 are formed by flat metal elements having recesses. As a result, the advantage is obtained that the mass of the moving parts is reduced, whereby on the one hand small actuators 11 can be provided and on the other hand, high traversing speeds of the holder 12 can be achieved.

Claims (13)

  1. A device (1) for opening an end region (7) of a tubular bag body (8), which end region (7) extends between an open tube body end (17) and a bottom central line (16), having a transporting device (27), on which the bag body (8) is transporteable with adjacent tube walls (15) in a bag conveying plane (14) at a transport rate (V) in a transporting direction (25), wherein the bottom central line (16) is oriented in the transporting direction (25), and having suction devices (13) arranged on both sides of the bottom central line (16), which are driven so as to be movable transversely back and forth to the transporting direction (25) and moveable to abut at the tube walls (15) of the end region (7) of the bag body (8) situated therebetween and which are then moveable apart from one another under exertion of a suction force onto the respective tube wall (15), pulling the tube walls (15) apart from one another, wherein the suction devices (13) are additionally moveable in and opposite to the transporting direction (25), characterized in that the suction devices (13) are mounted at first articulate joints (x1), wherein at each first articulate joint (x1) there are hinged two pivoting arms (10) pivotable relative to one another, wherein each pivoting arm (10) is pivotingly connected to a positioning pivoting arm (9) by means of a second articulate joint (x2), wherein each positioning pivoting arm is driven movably.
  2. A device (1) according to claim 1, characterized in that each positioning pivoting arm (9) is driven by its own positioning drive (11).
  3. A device (1) according to claim 1, characterized in that the positioning pivoting arms (9) are driven pair-wise by a positioning drive (11), wherein there are optionally interposed levers or gears between the positioning drive (11) and at least one of the positioning pivoting arms (9).
  4. A device (1) according to any of the preceding claims, characterized in that the suction devices (13) are moveable in a working plane (19), which is oriented at an acute angle (α) to the bag conveying plane (14), wherein the angle (α) is preferably adjustable.
  5. A device (1) according to claim 4, characterized in that the suction devices (13) are mounted on holders (12) opposing one another, wherein the device (1) has orienting arms (24), which hold the holders (12) opposing one another in parallel with one another in the case of a movement in the working plane (19).
  6. A device (1) according to claim 5, characterized in that the positioning pivoting arms (9), the pivoting arms (10) and/or the orienting arms (24) have at least one recess.
  7. A device (1) according to claim 5 or 6, characterized in that the rate component of the holders (12) in the transporting direction (25), when opening the end region (7) of a tubular bag body (8), essentially corresponds to the transport rate (V).
  8. A device (1) according to any of claims 5 to 7, characterized in that each holder (12) carries several suction devices (13), wherein the suction devices (13) are arranged at each holder (12) in at least one row.
  9. A device (1) according to claim 8, characterized in that the holders (12) are configured adjustable such that the rows of suction devices (13) are oriented in parallel to the bag conveying plane (14).
  10. A device (1) according to any of the preceding claims, characterized in that the suction devices (13) may be moved in a circumferential trajectory (18) having the following positions:
    a first position (20), in which the suction devices (13) rest at or near the bottom central line (16) at the adjacent tube walls (15) of the end region (7) of the bag body (8),
    a second position (21), in which the suction devices (13) have been moved in regard to the first position (20) in the transporting direction (25) and away from each other,
    a third position (22), in which the suction effect of the suction devices (13) is turned off,
    wherein the third position (22) is situated at or near the point of return of the circumferential trajectory (18) from the movement in the transporting direction (25) into a movement opposite to the transporting direction (25), and
    a fourth position (23), which is situated at or near a point of return of the circumferential trajectory (18) from the movement opposite to the transporting direction (25) into a movement in the transporting direction (25).
  11. A device (1) according to claim 10, characterized in that the first positions (20) of suction devices (13) opposing one another in the transporting direction (25) are arranged offset to one other.
  12. A device (1) according to any of claims 2 to 11, characterized in that the positioning drives (11) are formed by stepping motors or servo-motors.
  13. A system (40) for forming open bottoms at open end regions (7) of tubular bag bodies (8), characterized in that each bag body (8) has end regions (7) opposing one another, wherein, for opening each of the end regions (7), there is configured respectively one device (1) according to any of claims 1 to 12 and wherein the devices (1) are arranged offset to one another in the transporting direction (25) of the bag bodies (8).
EP16179471.4A 2016-07-14 2016-07-14 Device for opening an end area of a tubular sack body Active EP3269539B1 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
ES16179471T ES2726708T3 (en) 2016-07-14 2016-07-14 Device for opening an end zone of a tubular shaped bag body
EP16179471.4A EP3269539B1 (en) 2016-07-14 2016-07-14 Device for opening an end area of a tubular sack body
TW106122729A TWI720222B (en) 2016-07-14 2017-07-06 A device for opening an end region of a tubular bag body
PCT/EP2017/067206 WO2018011114A1 (en) 2016-07-14 2017-07-10 Device for opening an end region of a tubular bag body
US16/317,617 US10960634B2 (en) 2016-07-14 2017-07-10 Device for opening an end region of a tubular bag body
JP2019501572A JP6956168B2 (en) 2016-07-14 2017-07-10 A device for opening the end area of a tubular bag
CN201780043646.XA CN109476109B (en) 2016-07-14 2017-07-10 Device for opening the end region of a tubular pouch
BR112019000379-7A BR112019000379B1 (en) 2016-07-14 2017-07-10 DEVICE FOR OPENING A TERMINAL REGION AND A TUBULAR BAG BODY AND SYSTEM FOR SETTING OPEN FUNDS IN OPEN TERMINAL REGIONS OF TUBULAR BAG BODIES
KR1020197000970A KR102466798B1 (en) 2016-07-14 2017-07-10 A device for spreading the end area of a tubular bag body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16179471.4A EP3269539B1 (en) 2016-07-14 2016-07-14 Device for opening an end area of a tubular sack body

Publications (2)

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EP3269539A1 EP3269539A1 (en) 2018-01-17
EP3269539B1 true EP3269539B1 (en) 2019-02-20

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EP16179471.4A Active EP3269539B1 (en) 2016-07-14 2016-07-14 Device for opening an end area of a tubular sack body

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EP (1) EP3269539B1 (en)
JP (1) JP6956168B2 (en)
KR (1) KR102466798B1 (en)
CN (1) CN109476109B (en)
BR (1) BR112019000379B1 (en)
ES (1) ES2726708T3 (en)
TW (1) TWI720222B (en)
WO (1) WO2018011114A1 (en)

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Publication number Publication date
US10960634B2 (en) 2021-03-30
WO2018011114A1 (en) 2018-01-18
CN109476109B (en) 2020-10-09
EP3269539A1 (en) 2018-01-17
TWI720222B (en) 2021-03-01
BR112019000379A2 (en) 2019-04-24
TW201808731A (en) 2018-03-16
KR20190028699A (en) 2019-03-19
CN109476109A (en) 2019-03-15
US20190291379A1 (en) 2019-09-26
BR112019000379B1 (en) 2022-09-06
ES2726708T3 (en) 2019-10-08
JP6956168B2 (en) 2021-10-27
KR102466798B1 (en) 2022-11-14
JP2019521049A (en) 2019-07-25

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