EP2455289B1 - Vorrichtung und Verfahren zum definierten Aufnehmen von Säcken - Google Patents

Vorrichtung und Verfahren zum definierten Aufnehmen von Säcken Download PDF

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Publication number
EP2455289B1
EP2455289B1 EP11009138.6A EP11009138A EP2455289B1 EP 2455289 B1 EP2455289 B1 EP 2455289B1 EP 11009138 A EP11009138 A EP 11009138A EP 2455289 B1 EP2455289 B1 EP 2455289B1
Authority
EP
European Patent Office
Prior art keywords
bag
valve
bags
air
sacks
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
EP11009138.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2455289A1 (de
Inventor
Christian Remfert
Bernhard STÖVESAND
Frank Wältermann
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.)
Haver and Boecker OHG
Original Assignee
Haver and Boecker OHG
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Publication date
Application filed by Haver and Boecker OHG filed Critical Haver and Boecker OHG
Publication of EP2455289A1 publication Critical patent/EP2455289A1/de
Application granted granted Critical
Publication of EP2455289B1 publication Critical patent/EP2455289B1/de
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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

Definitions

  • the invention relates to a device and a method for defined picking up of bags and in particular of flexible valve bags from a storage table on which a bag bundle is arranged lying flat and from which a bag is taken and picked up individually to the bag, for example by means of a slip on a Place the filler neck of a rotating packing machine out of the US 3,934,388 a device for separating bag stacks open sacks has become known, wherein a bag stack is stored in a bag magazine. The topmost bag of the sack stack is lifted by a sucker acting on one end. Underneath the raised end of the uppermost open bag runs a revolving chain so that the uppermost open bag is completely lifted by the chain section.
  • the open bag deposited on the chain section is further transported by the chain section and introduced between transport rollers which ensure the further transport of the offensive bag. From the transport rollers of the open bag is pushed onto a transfer table, where from below via air nozzles an air cushion is built on which the open bag continues to slide until it is stopped at the end. There, the open end of the offensive bag is received and the open bag is transferred to a filling machine.
  • Rotary packing machines have a plurality of, for example, 4, 6, 8, 10, 12 or 16 filling nozzles, onto which the valve bags to be filled are plugged with their valve during the rotational movement.
  • the valve bag is plugged targeted by a slip-on at a fixed angular position.
  • the slip-on picks up from a bag bundle on a still unfilled valve bag and brings him to a suitable Aufsteckposition.
  • the valve bag valve must be opened defined.
  • shot is correct insofar as the sacks have to bridge a short distance unguided the space between the slip-on and the filler neck of the packing machine.
  • the sacks are precisely and repeatably positioned throughout the attachment process to keep the slip rate within the desired high range.
  • the bags In order to achieve a high Aufsteckquote, the bags must be picked up defined and shot from a defined position on the filler neck of the packing machine.
  • such bags are made of paper or they have an outer layer of paper, which leads to a certain rigidity of the valve bags.
  • a slider or a gripper aligns the bag bundles specifically.
  • valve sacks are common, which do not consist of a relatively stiff material, such as paper, but made of fabric, foil or other more flexible materials.
  • bags made of woven or ribbon fabric are inexpensive to manufacture and such bags can have a high strength.
  • such sacks have the disadvantage that they have a considerably lower rigidity.
  • the bag bundle is less alignable and in particular, the individual bag is difficult to align because a mechanical load through a slide can already lead to a drape on the bag surface and thus an undefined position of the bag.
  • undefined positions in the processing of automatic bag pegs can result in a significantly reduced pegging rate that is no longer tolerable.
  • a positioning device is provided with at least one blowing device which has at least one inclined to the horizontal air nozzle, which obliquely from above toward one end of the is to be picked up bag to be positioned defined by a targeted air blast the male uppermost bag of the bag bundle at a stop.
  • the receiving device has many advantages, since it is suitable and intended to individually receive and define the respectively to be picked upmost sack of the bag bundle. This allows a defined further processing of the bag, whereby a high reproducibility of Sacêtsteckens is made possible on a filler neck of a rotating packaging machine.
  • the slip-on rate can be significantly increased even with flexible bags, so that a fully automatic filling of different materials can be done in such valve bags.
  • the positioning positioned over the at least one targeted air blast of the blowing device the male uppermost bag defined on a stop. A not yet perfectly aligned sack is conditionally applied to the stop by the air blast, so that further mechanical means are not required.
  • the storage device is particularly preferably designed as a storage table.
  • air nozzle By the obliquely directed from the top of one end of the bag air nozzle is preferably a gentle, but certain air blast spent on the end of the bag. In addition to air, other gases can be blown.
  • the blowing device may also comprise a plurality of spatially adjacent and / or successively and / or staggered air nozzles.
  • the air nozzles are provided in one embodiment, in particular laterally offset.
  • the air nozzles may be provided, for example, on a pipe or the like over the width of the sacks to be aligned. It is also possible that one or more flat nozzles or louvers are provided to deliver the targeted air blast on the male uppermost bag of the bag bundle.
  • Valve bags often have a bottom seam or weld or the like that may already provide suitable resistance to the blast of air, such that the blast of air through the additional drag from the bottom seam or portions thereof results in movement of the bag toward the stop.
  • the particular sewn valve bags preferably have at least one tab or the like on a side surface, the bags in the bag bundle are then preferably positioned on the tray so that the tabs are each located above, so that the air shock is caught under the tab and to a particularly effective drive of the bag leads in the direction of the stop.
  • the tab may be formed as a folded end portion of the bag. For example, it is often customary to produce a valve bag by folding over an end wall two or more times and sewing it there. This regularly results in a folded end region as a tab under which such a blast of air can reach to carry the bag to its defined position.
  • At least one tab is designed or provided as a pocket.
  • a tab or the like can also be formed by a folded-down bottom of the bag, such as a folded-down valve bottom or folded-down bottom.
  • the maximum offset of the bags is less than the length of the tab so that the air blast carries the bag over the underlying and does not catch under the flap of the underlying.
  • the sacks may at least partially consist of a fabric or a ribbon fabric.
  • the sacks can be designed in particular to be permeable to air and have no inner or outer coating of the fabric and thus differ significantly in their properties from the paper sacks commonly used.
  • the storage device comprises a storage surface and a stop for one end of the bags.
  • the invention is also directed to a slip-on device with at least one receiving device according to at least one of the preceding claims and to a packing installation with a packing machine and a slip-on device and a receiving device, as described above.
  • a sack bundle with a plurality of sacks is laid flat on a depositing device.
  • at least one blowing device of a positioning at least one targeted air blast is discharged from above towards one end of the male bag to position the topmost bag of the bag bundle defined on a stop.
  • the method according to the invention also has many advantages, since a reliable and reproducible alignment of the individual bags is made possible.
  • the bag bundle is transported to the storage device and stored there.
  • a bag bundle has a higher stiffness than a single bag.
  • the bag bundle can be transported by carriers on the storage device and stored there. After a sack bundle with several in particular flat superimposed sacks is placed on the storage device, the topmost bag is positioned with the targeted air blast in each case.
  • the air blast is preferably directed under an overhead folded end portion or a tab provided on the side surface of the bag.
  • FIGS. 1 to 15 In the following, some embodiments of a device according to the invention will be explained.
  • Fig. 1 shows a highly schematic plan view of a packing station 60, which comprises a rotating packaging machine 1 and a slip-on device 10 and a discharge belt 70.
  • the packing machine 1 is used to fill valve bags 2 and, in the exemplary embodiment illustrated here, has six filling nozzles 3 arranged distributed over the circumference, of which valve bags 2 are each arranged at five filling nozzles 3.
  • the packing machine 1 is in the plug-on position.
  • the angle sensor 61 had previously detected the Vorbeirotieren the next filler neck 3 in the predetermined angular position 46 and thus triggered the next Aufsteckvorgang.
  • a plug-in device 10 associated sensor and the use of an existing in the packing machine sensor is possible, which detects the predetermined angular position 46.
  • the slip-on device 10 here has a empty-bag magazine 71 and a slip-on device 20.
  • Fig. 2 shows in a perspective overall view of the slip-on 10.
  • the empty bag magazine can be designed as empty bag cell magazine and be suitable for the automatic transport of bag bundles 5 of the receiving device 30 of the slip-10.
  • a bag bundle 5 is transported straight in the direction of the tray 42 designed as a storage device 42.
  • the storage table 34 has a storage surface 58 on which a bag bundle 5 can be stored. Following this, the uppermost valve bag 2 of the bag bundle 5 is gripped by the receiving device 30 and fed to the slip-on device 20. It is also possible that the bags are vorackzelt and individually arranged on the storage device 42 and the storage table 34 and taken there.
  • the slip-on device 10 can also be retrofitted to existing packing machines.
  • the sack weight of the individual sacks may vary and is in particular between about 5 and 50 kg, and preferably between 20 and 50 kg, but depending on the application also larger or be smaller.
  • Fig. 3 is shown in an enlarged schematic representation of the receiving device 30, with a defined receiving the valve bags 2 takes place, even if the valve bags are not made of a relatively rigid material, but of a flexible plastic material such as a fabric.
  • a sack bundle 5 is arranged from a plurality of valve sacks 2, wherein the individual valve sacks 2 are arranged offset in the longitudinal direction for better understanding here. This can also occur in practice, especially in the case of flexible sacks, since sacks of flexible material can not be aligned as easily as is the case, for example, with sacks made of paper.
  • the receiving device 30 has a gripping device 4, which here comprises a suction strip with a plurality of suction devices 59 arranged one behind the other.
  • the individual suction cups 59 can be selectively switched on or off depending on the width of the valve sacks to be processed and / or are arranged adjustable.
  • the receiving device 30 furthermore has a positioning device 50, which here comprises a blowing device 51, having one or more air nozzles 53.
  • the air nozzle 53 may in principle have any desired cross-section and, in particular, be designed as a flat nozzle 54 and extend over the depth of the bag.
  • the positioning device 50 causes with the blowing device 51, an alignment of the uppermost bag on the stop 52 of the tray 34 by a targeted air blast of the air nozzles 53 of the blowing device 51, the bag is moved in the direction of the stop 52 and is defined with the bag stop end 48 to the Stop 52 brought.
  • the other end 49 of the bag is designed accordingly. Even previously isolated sacks can be aligned accordingly.
  • Fig. 4 shows a further enlarged view of the receiving device 30 in the receiving position.
  • an arrow is drawn from the air nozzle 53 in the direction of the bag end 48 in order to align the bag with the stop 52.
  • the drawn arrow indicates the air flow.
  • the air flow can attack at the protruding end behind the sack seam or he attacks a tab 55, which forms, for example, by folding the bag end when the bag valve 8 is formed on the valve bag 2. It follows that a certain area protrudes like a tab, which is used here for transporting the valve bag 2 on the stop 52 back. By a blast of air lifts the tab 55 with the free end of the surface of the valve bag 2, allowing a particularly effective transport to the stop 52nd
  • box valve bags can be aligned accordingly.
  • the air flow can attack there under the folded bag bottom. It is also possible to attach a bag or the like on the side wall to align bags.
  • valve bag 2 to be accommodated has its end 48 on the stop 52 although the underlying valve sacks 2 of the sack bundle 5 are not perfectly aligned.
  • the gripping device 4 After being in the position of Fig. 4 the gripping device 4 with the suction strip and the suction cups 59 has grasped the end 48 of the valve bag 2 next to the flap 55, in this embodiment the gripping device 4 is pivoted upwards by 90 degrees, with the end of the bag 48 upwards and in the direction of the second one Sacking 49 is spent.
  • the second end 49 of the bag may remain on the bag bundle 5 or it may be lifted by suitable further sucker to prevent accidental entanglement with the underlying valve bags 2. This position is in Fig. 5 shown.
  • the contact device 40 is pivoted down with the roller bar 35, wherein a small gap between the roller bar 35 and the drive belt 36 remains so that the valve bag 2 is still movable in the vertical direction.
  • valve bag 2 is aligned in the vertical direction.
  • an alignment device 32 which has a blowing device 39 and the abutment device 40.
  • the abutment device 40 rests against the valve bag 2 on the side opposite the sucker 59.
  • the vacuum of the sucker 59 is turned off, while at the same time an air blast by the blowing device 39, which is equipped with air nozzles 41, is activated.
  • the air flow of the blowing device 39 is vertically upwardly or substantially upwardly aligned to engage under the tab 55 of the valve bag 2 and the bag total of the in Fig. 5 shown hanging position 37 in the Fig. 6 illustrated aligned position 38 to transfer.
  • valve bag 2 is lifted vertically by the blowing device 39 until it is bounded by the V-shaped upper stop 44 in its further movement upward. In this construction, the bag is kept defined in the aligned position 38 so that defined pinning is enabled.
  • FIG. 7 another embodiment of a slip-on device 20 for use on a slip-on 10 is shown schematically.
  • the slip-on device 20 also has a gripping device 4, which is equipped with a suction strip with a plurality of suction cups 59.
  • the gripping device 4 is not provided pivotably, but provided on a structure parallelogram-like movable.
  • Fig. 8 shows the gripping device 4 when gripping a valve bag 2 of the bag bundle 5 by means of the sucker 59. It has surprisingly been found that the sucker 59 for use in basically air-permeable textile bags from a fabric or a ribbon fabric find sufficient support, so a reliable Grasping and lifting with the gripping device 4 is possible.
  • the alignment device 32 here comprises a blowing device 39 and the abutment device 40.
  • the suction vacuum is turned off and blown by means of the blowing device 39 air obliquely upwards in the direction of the V-shaped stop 44, so that the valve bag of the in Fig. 9 position shown in the in Fig. 10 shown aligned position 38 is transferred.
  • the drawn arrow indicates the air flow which engages under the tab 55 of the valve bag 2 and reliably positions the bag in the V-shaped stop 44.
  • valve opening channel 31 can be seen where the valve bag 2 is accelerated with the bag feed device 62 designed as an acceleration device 6 and finally is shot onto a filler neck 3 of a packing machine 1.
  • the valve opening channel 31 is formed as a shot channel 7 and serves to shoot up the valve bags 2 on the filler neck 3.
  • the roller bar 35 moves tightly against the drive 36, so that the valve bag 2 is firmly held therebetween and can be driven in the longitudinal direction of the weft channel 7.
  • valve bag 2 When the movement begins, the previously with its upper end 48 obliquely upwardly oriented valve bag 2 is transferred with the deflector 28 from the oblique to a vertical position. It does not change that the bag well-defined.
  • the sack feed device 62 or acceleration device 6 can remain activated until, for example, the front end of the sack reaches the detection range of the in Fig. 12 shown sensor 21 passes. In this bag position 22, a complete stop of the valve bag 2, until the signal for shooting up the valve bag 2 is given.
  • Fig. 11 shows a front view into the valve opening channel 31, wherein below the valve opening channel 31 of the drive belt 36 and the roller bar 35 are shown, between which the valve bag 2 is received and accelerated.
  • the valve opening channel 31 or firing channel 7 consists of two channel parts 25 and 26, which are assigned to the Aufsteck money 23 and 24 of the Aufsteck issued 20.
  • the shape of the cross section 27 is diamond-shaped here, but may also be polygonal, oval or round.
  • the valve bag 2 is in the hanging position 29, in which it is aligned in the vertical direction exactly.
  • the suspended position 29 may correspond to the aligned position 38.
  • a blowing device 9 which here comprises two air nozzles 11 and 12.
  • the air nozzles 11 and 12 are provided on both sides 14 and 15 of the valve opening channel 31 so as to be disposed on both sides of the valve 8 of the valve bag 2.
  • the air nozzles 11 and 12 are designed to allow air in Direction of the outlet opening 13 of the firing channel 7 to blow.
  • the position of the air nozzles 11 and 12 can be adapted to the present conditions.
  • the exact beam direction can be adjustable. A beam direction slightly outward has brought positive results.
  • the air nozzles 11 and 12 are arranged here on flow guides 17 and 18, which lead to a cross-sectional constriction of the flow channel.
  • the flow guiding devices 17 and 18 are each designed here as a mounting part 19, but may also be an integral part of the valve opening channel 31 or firing channel 7.
  • the flow guides 17 and 18 are formed in the area in front of the air nozzles 11 and 12 aerodynamically, so that in the flow through the valve opening channel 31, the vortex formation is reduced.
  • the air nozzles 11 and 12 each blow an air stream 16, as indicated by the arrows in FIG Fig. 12 is indicated.
  • the cross-sectional constriction caused by the flow guiding devices 17 and 18 leads there to an increase in the flow velocity and thus in the lateral regions to a negative pressure which leads to an opening of the bag valve 8.
  • the signal to plug in is given a short time before the activation of the accelerator 6. Between 0.05 and about 1 second before activating the accelerator and the actual firing of the valve bag 2, the air flow 16 of the air nozzles 11 and 12 is turned on and can build an approximately stationary flow profile, which already leads to an opening of the bag valve 8. After the airflow 16 has been activated for preferably 0.2 to 0.5 seconds, the drive belt will be at maximum intended power switched to accelerate the valve bag 2 and foundedschjanen on the filler neck 3 a packing machine 1.
  • the acceleration capacity of the accelerator 6 can of course be accelerated only with a partial power.
  • Fig. 14 shows a cross section in the height of the air nozzles 11 and 12, the state of the valve bag 2 when leaving the firing channel 7.
  • the bag valve 8 is sufficiently open and can be plugged or shot onto the filler neck 3 of the packing machine 1.
  • Fig. 15 shows a valve bag 2 in a highly schematic plan view and in a schematic side view of the bag end 48th
  • the valve bag 2 here consists of ribbon fabric 57, which is permeable to air.
  • the valve bag 2 has the bag valve 8 at the end 48, which was created by folding in and folding the bag end or end area 56 several times.
  • a tab 55 results at the end 48 of the bag, which is about 0.5 to 4 cm long and provides sufficient flow resistance when under the tab 55, a stream of air is blown to align the valve bag 2 laterally or vertically.
  • the invention provides an advantageous device and an advantageous method, which also valve bags 2 made of flexible materials with high speed and reliable can be plugged onto the filler neck 3 of rotating or stationary packaging machines.
  • a reliable alignment of the valve bags 2 takes place on the delivery table 34 in order to ensure a defined receiving the valve bags 2.
  • the valve bags 2 repeatedly aligned in the vertical direction and it is done by the air flow in the valve port 31, a reliable opening of the bag valves 8 of the valve bags. 2
  • air is understood to mean not only air but also any other gas or gas mixture.
  • air nozzle basically includes any gas outlet elements and gas outlet surfaces. Are possible round, square, oval, rounded, flat and other cross-sectional shapes on the gas outlet surface. It is also possible, for example, that a pipe or hose is used as a gas outlet. The design does not have to be nozzle-shaped in the narrower sense. Also, an end of a pipe or hose without cross-sectional change is considered as an air nozzle in the context of the present invention.
EP11009138.6A 2010-11-20 2011-11-17 Vorrichtung und Verfahren zum definierten Aufnehmen von Säcken Active EP2455289B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201010051693 DE102010051693A1 (de) 2010-11-20 2010-11-20 Vorrichtung und Verfahren zum definierten Aufnehmen von Säcken

Publications (2)

Publication Number Publication Date
EP2455289A1 EP2455289A1 (de) 2012-05-23
EP2455289B1 true EP2455289B1 (de) 2015-07-08

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EP11009138.6A Active EP2455289B1 (de) 2010-11-20 2011-11-17 Vorrichtung und Verfahren zum definierten Aufnehmen von Säcken

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EP (1) EP2455289B1 (es)
CN (1) CN102556424B (es)
DE (1) DE102010051693A1 (es)
ES (1) ES2545620T3 (es)

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CN103303525B (zh) * 2013-07-04 2015-04-15 安徽远鸿机械自动化有限公司 一种具有双重理袋功能的给袋包装机
CN104276310A (zh) * 2014-07-22 2015-01-14 合肥三冠包装科技有限公司 一种包装机吸袋传袋结构
CN104670562A (zh) * 2015-02-12 2015-06-03 安徽永成电子机械技术有限公司 一种自动灌装线供袋机用静电吸附分离装置
DE102015005660A1 (de) * 2015-04-27 2016-10-27 Beumer Gmbh & Co. Kg Vorrichtung und Verfahren zum Ausrichten und Greifen eines Sacks
DE102015005664A1 (de) * 2015-04-27 2016-10-27 Beumer Gmbh & Co. Kg Vorrichtung zum Aufstecken von Ventilsäcken
DE102016125485A1 (de) * 2016-12-22 2018-06-28 Haver & Boecker Ohg Aufsteckvorrichtung und Verfahren zum Aufstecken von Ventilsäcken
CN108688880B (zh) * 2018-05-10 2023-11-07 桂林电子科技大学 一种阀口袋自动上袋机器人的末端操作器及运行方法
CN111703652A (zh) * 2020-06-23 2020-09-25 李桂华 一种水泥制备用环保型装袋封料加工装置及加工方法

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DE7243009U (de) * 1973-02-22 Gebr Borghart Kg Maschine zum selbsttätigen Auf stecken von Sacken, insbesondere von Ventilbodenssacken auf den Stutzen einer Füllmaschine
US2684191A (en) * 1951-01-29 1954-07-20 Consoldated Packaging Machiner Transfer mechanism for feeding opened bags to a bag filling apparatus
AT328963B (de) * 1973-12-04 1976-04-26 Voest Ag Verfahren zum abnehmen eines einseitig offenen sackes von einem stapel solcher sacke und aufstecken des abgenommenen sackes auf einen absackstutzen sowie vorrichtung zur durchfuhrung des verfahrens
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DE102008049255A1 (de) * 2008-09-26 2010-04-01 Haver & Boecker Ohg Vorrichtung und Verfahren zum Aufstecken von Ventilsäcken

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Publication number Publication date
CN102556424B (zh) 2016-05-25
ES2545620T3 (es) 2015-09-14
DE102010051693A1 (de) 2012-05-24
EP2455289A1 (de) 2012-05-23
CN102556424A (zh) 2012-07-11

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