EP3558828A1

EP3558828A1 - Fitting device and method for fitting valve bags

Info

Publication number: EP3558828A1
Application number: EP17832229.3A
Authority: EP
Inventors: Christian Remfert
Original assignee: Haver and Boecker OHG
Current assignee: Haver and Boecker OHG
Priority date: 2016-12-22
Filing date: 2017-12-21
Publication date: 2019-10-30
Anticipated expiration: 2037-12-21
Also published as: EA201991244A1; CN110088002B; ES2904924T3; DE102016125485A1; WO2018115379A1; CN110088002A; EP3558828B1; EA038507B1

Abstract

Fitting device (1) for fitting woven and/or stitched valve bags (10) onto a filling spout (101) of a packaging machine (100), having a gripper holder (4) which can be moved between a receiving position (2) and an orientation position (3), and has a gripper (5), in order to grip a valve bag (10) in the receiving position (2), and having a blowing device (6) with an air nozzle (7), in order to orient the valve bag (10) in a defined manner in the orientation position (3). In the orientation position (3), an accommodating space (20) for a portion (10) of the valve bag (2) is formed between the gripper holder (4) and the blowing device (6). The gripper (5) is aligned with the accommodating space (20) from a first side (21), and the nozzle (7) is aligned with the accommodating space (20) from an opposite, second side (22), in order to act on opposite side walls (11, 12) of a valve bag (10) accommodated in the accommodating space (20).

Description

Plug-on device and method for attaching valve bags

Besehreibung

The present invention relates to a AufSteckvorrichtung for attaching valve bags and in particular for attaching woven and / or sewn valve bags to a filler neck of a particular rotating packing machine.

In the prior art, various devices and

Method for attaching valve bags to the filler neck of rotating packaging machines has become known. Rotary packaging machines with 4, 6, 8, 10, 12 or even 16 or any other number of filler neck have become known in the art. They become effective filling

used various materials. For example, bulk materials such as cement are often rotated by

Packaging machines filled. Modern packaging machines allow high filling rates, in which, for example, one bag or more is filled per second.

For automatic operation of such a packing system, the valve bags are plugged or shot open by a AufSteckautomaten on the filler neck of the packing machine during the rotational movement. To achieve a high stocking rate, the bags must be picked up in a defined manner and defined

Position are shot onto the filler neck of the packing machine. When filling such bulk materials in valve sacks made of paper can be reliably worked with a high Aufsteckrate, as valve sacks made of paper have a certain inherent rigidity.

On the other hand, valve bags are made of more flexible materials

used, for example, from a tissue or a

Ribbon fabric made of plastic materials, so these valve bags have greater flexibility, which causes considerable difficulties in automatic Aufsteckung.

It is therefore known from EP 2 455 288 Bl a device and a method, which valve bags made of fabric or ribbon fabric on the rotating filler neck of a

Packing machine to be shot up. The known device uses in certain valve bags a tab-like area that arises during sewing and protrudes from the bag surface to blow below a targeted puff of air, with which defines the valve bag at an upper stop

is positioned.

The known device works reliably and

allows high Aufsteckraten and high AufSteckquoten, provided that a sufficient tab is formed on the valve bag on which the air blast can attack. In flexible valve bags, where no or a very weak tab protrudes from the surface of the bag, it has

proved that a reliable Aufsteckung only with relatively low speeds or Aufsteckraten

works. The attack surface for the air blast is not sufficient to quickly align the valve bag up. At low speeds works such

On-the-go equipment but not economical.

It is therefore the object of the present invention, a AufSteckeinrichtung and a method for attaching

Valve bags on a filler neck of a packing machine for To provide, which even with flexible valve bags without sufficiently protruding tabs, a high Aufsteckrate with high AufSteckquote can be achieved.

This task is performed by a plug-in device with the

Features of claim 1 and by the method with the

Characteristics of claim 17 solved. Preferred developments of the invention are subject of the dependent claims. Further

Advantages and features of the present invention will become apparent from the general description and the description of the

Embodiment.

An attaching device according to the invention is used for attaching valve bags and in particular for attaching woven and / or sewn (flexible) valve bags to a

Filler of a packing machine. The attaching device comprises one between a receiving position and a

Alignment position movable gripper holder with at least one gripper to a valve bag in the receiving position

take. The AufSteckvorrichtung further comprises a

Blower with at least one air nozzle to the

Align the valve bag in the alignment position (defined). Between the gripper holder and the blowing device is

formed a receiving space for a bag portion of the valve bag at least in the alignment position. The gripper is in the alignment position from a first side and the air nozzle is aligned in the alignment position from an opposite second side to the receiving space to

opposite side walls of a recorded in the receiving space valve bag act.

The Aufsteckvorrichtung invention has many advantages. A considerable advantage of the invention

Plug-in device consists in that the blowing device with the air nozzle or the air nozzles of one of the grippers

opposite side acting on the valve bag to be aligned. It has surprisingly been found that so that an effective Aufsteckung is possible. Surprisingly, it is not necessary to blow from below against a tab on the valve bag valve to thereby transport the valve bag upwards. The tab can not be present or almost not exist. The air blast takes place

especially from the opposite side of the tab, so that the tab can not contribute to the feed, if there is even a tab.

By the invention, an air cushion is formed on the opposite side of the gripper, through which any friction between the valve bag and any walls

is reduced. Typically, the valve bag is picked up by the gripper from a stack of sacks (eg horizontally on a table) and into a raised position

spent. If air is directed in the direction of the valve sack only from the side opposite the gripper, the valve sack can slide on an air cushion and be aligned. In this case, the valve bag by the often very rough

Surface of woven and / or sewn valve bags by the directed air flow are also (at least partially) transported in the vertical direction to be aligned.

In the alignment position between the gripper holder and the blowing device, a receiving space for a bag portion of the valve bag is formed, wherein the gripper on a first

Side wall and in particular an upper side wall and the air nozzle act on an opposite second and in particular lower side wall of the valve bag. Previously, the gripper has taken in the receiving position, the uppermost valve bag of a bag stack on a receiving table or

for example, get passed over another gripper. The gripper can in particular in the valve area the

Take the valve bag. In a preferred embodiment, a contact device is provided with an upper stop. The upper stop limits the receiving space upwards. At the upper stop a valve bag is defined aligned. Preferably, the upper stop is V-shaped. In particular, an acute-angled region is formed on the V-shaped stop. As a result, a defined positioning of a valve bag is ensured at the top stop. In preferred

Embodiments, the investment device comprises an angle plate. At the angle plate, the upper stop may be formed. The upper stop can be formed by the angle plate. The angle plate is designed in particular V-shaped and is open to the receiving space, so that a defined orientation of a valve bag and in particular of the valve area is made possible at the top stop.

Preferably, the gripper holder is coupled to the blowing device. It is particularly preferred that the

Gripper holder is movable relative to the blowing device.

Preferably, the gripper holder and the blowing device are pivotally coupled together. In this case, an opposite pivoting is possible, which leads depending on the pivoting direction to an enlargement or reduction of the receiving space.

In advantageous developments, air openings are formed on the contact device and in particular on the angle plate. Particularly preferably, some air openings are formed in the corner or in the vicinity of the corner or in the acute-angled area of the upper stop. The air openings allow air to escape from the receiving space through the air openings into the environment. This will be a derivative of the

Air flow from the air nozzles and thus allows a directed flow without congestion, creating a positioning of the

Valve bag is facilitated.

Preferably, the gripper holder is attached to a

Gripper holder coupling swivel added. It is the Gripper holder coupling movable to transfer the gripper holder from the receiving position to the alignment position. The majority of the way of the gripper holder of the

Recording position in the alignment position becomes special

preferably achieved by a movement of the gripper holder coupling. In addition, a not insignificant movement of the

Gripper holder are performed to reach the alignment position. To carry out such a movement, a drive device may be provided which is provided for pivoting the gripper holder and / or the blowing device. Preferably, the drive device is by a

Cylinder drive formed or includes such.

Preferably, the drive device with the

Gripper holder coupling and coupled to a pivot arm of the gripper holder. This is by, for example, the extension of the

Cylinder pivoting of the gripper holder on the

Gripper holder coupling reached. As a result, preferably changes the angular orientation of the gripper holder for

Gripper holder coupling.

Preferably, the abutment means and in particular the angle plate is pivotally coupled to the gripper holder and preferably synchronized driven by means of the same drive. Preferably, the gripper holder is pivotally received on the gripper holder coupling or pivotally coupled thereto.

Preferably, the gripper holder coupling between a lower receiving position and an upper transfer position

pivotable. An additional pivoting of the

Gripper holder is achieved in particular by the drive device, which aligns the gripper and the air nozzle or the air nozzles corresponding to the valve bag to be positioned.

In all embodiments, it is preferred that a

Transport device for transporting an (aligned) Valve bag is provided which comprises at least one belt strip and / or at least one roller bar. Preferably, the transport device is used to the (in

vertical direction) valve bag to accelerate towards the filler neck and finally aufzuschießen. During acceleration, the opening of the bag valve can take place.

It is preferred that the air nozzle at least partially toward the V-shaped opening of the upper stop

is aligned. Then an air flow is achieved at least in the direction of the upper stop, whereby a

more reliable positioning is achieved.

Preferably, the blowing device comprises a tube with a plurality of air nozzles and is attached directly or indirectly to the angle plate. In this case, a plurality of passage openings are particularly preferably formed between the tube and the angle plate. The attachment of the blowing device to the angle plate can be done over several (narrow) webs. Through openings between the angle plate and the tube with the air nozzles are very advantageous, as this suction of the bag wall is prevented at the angle plate, since a venturi effect and concerns of the bag wall to the angle plate can be prevented.

In all embodiments, it is preferable to provide at least one additional nozzle, which is aligned from a first side in the direction of the receiving space. The additional nozzle acts on the first side surface of the valve bag. In preferred embodiments, a seam and / or a tab and / or a bag projection is provided on the first side surface of the valve bag. Preferably, the auxiliary nozzle blows under the tab on the first side surface of the valve bag.

The additional nozzle offers (in all variants) considerable advantages, since thereby the positioning quality and thus the

Aufsteckrate and AufSteckquote be improved again can. The additional nozzle largely corresponds to the known from the prior art nozzle, but with no alone in difficult bag material and insufficient bag supernatants

sufficiently satisfactory result was achievable. As an additional nozzle in difficult cases, however, the reliability of Aufsteckung is further increased. When using both nozzles, the bag section is both from below and from above

(both sides) wrapped with a directed air flow. In particular, the bag section, on which the air nozzle and the additional nozzle act for defined alignment, is oriented obliquely to the vertical.

Preferably, the gripper is in the transfer position and / or in the alignment position at an angle between about 30 ° and 80 ° and in particular between about 30 ° and 70 ° and

preferably at about about 50 ° +/- 15 ° to the horizontal

aligned.

The auxiliary nozzle preferably blows on the above

arranged wall (upper wall or first side surface) and the air nozzle on the lower wall arranged (lower wall or second side surface) of the valve bag.

The inventive method is used for attaching

Valve bags and in particular for attaching woven and / or sewn valve bags (for example

Ribbon fabric) on a filler neck of a particular rotating packing machine, wherein in a receiving position, a valve bag with a gripper gripped and in a

Alignment position of the valve bag with a puff of air

Air nozzle (defined) is aligned. In this case, the gripper grips the valve bag on a first side wall and the air nozzle acts on the opposite second side wall to align the valve bag in at least partially vertical direction. The method according to the invention also has many advantages. The method makes it possible, valve bags with a bag valve and two opposite side surfaces or

Reliable automatic attachment of side walls, even if the valve bags have no or very short folded flaps

have and consist of flexible ribbon fabric.

Preferably, the gripper engages the upper side wall of a bag stack lying on a stack of sacks to this

subsequently defined to align. The air nozzle is aligned at least partially upwards to align and blows from below against the second side wall of the valve bag. At the same time the gripper is released and the valve bag is guided freely in the air flow. This will be a transport of

Valve bag guaranteed to the top stop. The force required for transport is applied to the rough side wall of the valve sack by the blast of air. Preferably, the air nozzle blows from below against the bag wall located obliquely in the space and forms an air cushion between the wall of the valve bag and the angle plate, whereby the

Friction is reduced and a reliable transport to the top stop is ensured.

Advantageously, the air nozzle is operated with a flow of air at a higher level until a sensor detects the valve bag at an upper stop. Then the airflow can be reduced to a lower level or switched off. By reducing to a lower level becomes one

Wrinkling in the upper area of the valve bag is prevented.

In all embodiments, it is preferred that at least one additional nozzle and in particular a plurality of additional nozzles direct an air flow to the upper side wall when the valve bag

to be aligned. The auxiliary nozzle sends

preferably then an air flow, when the air nozzle and the gripper holder have been pivoted at least a little bit towards each other. The air nozzle and the gripper holder become pivoted towards each other after a sack was grabbed and lifted. The air flow of the auxiliary nozzle can be reduced or optionally switched off when a sensor detects the valve bag at the top stop. Alternatively or additionally, targeted blowing with the aid of the additional nozzle can assist the release of the valve sack from the grippers.

In all embodiments, it is preferable to carry out a gripper or all grippers as a sucker. In particular, the suckers are designed as suction cups.

In particularly preferred embodiments, the blowing device with the air nozzle or the air nozzles is first activated to align the valve bag. As a result, for example, a folded end of a valve sack can be brought back into the correct and correct position. The sucker then lets go of the valve bag, for example, by switching off the vacuum on the sucker. Depending on the bag material can then be activated in addition to the air nozzle still the additional nozzle, so that a particularly reliable transfer of the valve bag ensures the top stop and the release of the bag is supported by the suckers if necessary. The lower side wall of the valve bag slides on the

Air cushion of the air nozzle obliquely upwards until the valve bag rests against the upper stop. Then the air supply to the air nozzle can be switched off and reduced at the additional nozzle. This can save energy. In addition, a

Drape flexible bags reliably prevents the upper stop. This positioning will be upheld

until the roller and belt strips have been closed and the previously oriented valve bag is accelerated towards the filling machine.

Further advantages and features of the present invention will become apparent from the embodiment, which is explained below with reference to the accompanying figures. In the figures show:

Figure 1 is a schematic plan view of a packing plant with a packing machine and a device for attaching valve bags;

Figure 2 is a highly schematic overall view of

inventive AufSteckvorrichtung for attaching valve bags;

3 shows a cross section through the AufSteckvorrichtung according to

Figure 2;

FIG. 4 shows an enlarged cross-section according to FIG. 3 in another pivoting position;

Figure 5 is a schematic side view of the upper

Stop connected blowing device;

Figure 6 is a highly schematic representation of

A plug-in device in a first position;

Figure 7 is a highly schematic representation of

On the plug-in device according to FIG. 6 in a second position; and

Figure 8 is a highly schematic representation of

Plug-in device according to FIG. 6 in a third position.

With reference to the accompanying figures 1 to 8 is in

Below, an embodiment of an inventive AufSteckvorrichtung 1 explained. FIG. 1 shows a highly schematic plan view of a packing installation, which comprises a rotating packing machine 101, an attaching device 1 and a discharge belt 120. The packing machine 100 for filling valve bags 10 has shown here Embodiment six distributed over the circumference arranged filler neck 101, of which five filler neck 101 each valve bags 10 are arranged.

The packing machine 100 is in the open position. The angle sensor 102 has previously detected the vorbeirotieren the next filler neck 101 in the predetermined angular position 103, and thus triggered the next AufSteckvorgang. In addition to the use of a sensor (angle sensor 102) assigned to the plug-in device 1, it is also possible to use a sensor present in the packing machine, which sensor

Angular position 103 detected.

The AufSteckvorrichtung 1 here has a blank bag magazine or empty bag cell belt 110, which for automatic

Transport of bag bundles or bag stack 19 is suitable.

In the illustration according to FIG. 2, a sack bundle 19 becomes straight onto the storage surface formed as a receiving table 30

transported. The receiving table 30 has a

Working surface on which a plurality of bag bundles 19 can be stored and processed one after the other.

The sack weight of the individual sacks may vary and is in particular between about 5 kg and 50 kg and preferably between 20 kg and 50 kg and may also be larger or larger depending on the application be smaller.

After gripping and lifting, the end of the valve sack can initially rest horizontally on the receiving table 30.

The obliquely standing in the space aligned sack portion of the valve bag is in the transport in the direction of the

Filler deflected, so that the bag section is then oriented vertically before plugging. Just before shooting the bag valve is opened by means not shown. For example, the blind valve can be opened by negative pressure or by an air flow and the Venturi principle, as it is also described in EP 2 455 288 Bl.

FIG. 3 is a schematic cross-sectional view of FIG

To see on the plug device 1. Shown is the

Plug-in head of the plug-in device. The attaching device comprises a driven belt strip 31 and a roller bar 32, which are shown here in the closed position, in which a valve bag 10 located between them

is removed and can be shot on a filler neck.

The angle plate 17 with the upper stop 16 has an approximately V-shaped configuration and is oriented obliquely in space, so that a contact surface for a side wall of a

Valve sacks an angle between about 30 ° and 80 ° and

in particular about 60 ° to the horizontal.

Figure 3 shows the AufSteckvorrichtung 1 in the

Alignment 3, in which a valve bag 10 has been aligned with the upper stop 16, while the end still on the

Shooting table 30 may lie down. Subsequently, the

Valve bag shot onto a filler neck of a packing machine 100.

After firing, the belt strip 31 and the roller bar 32 open by the roller bar 32 is pivoted open. In this case, the gripper 5 is pivoted with increasing speed down.

FIG. 5 shows a schematic side view of FIG

Investment device 15 with the designed as an angle plate 17 upper stop 16, which is fixedly connected to the blowing device 6 with the air nozzles 7. The air nozzles 7 are in Direction of the end 17 c of the second leg 17 b of the angle plate 17 aligned. If a sack is there for

Alignment is located, the air flow is deflected in the direction of the upper stop 16 in the acute corner of the angle plate 17, so that at least part of the air flow of the air nozzles 7 exits through the air openings 18 at the upper stop 16 of the contact device 15. This ensures that a valve bag can be reliably aligned and thereby blown between the angle plate 17 and the valve bag 10 air

Air nozzles 7 can escape upwardly through the air openings 18.

Between the abutment means 15 and the blower 6 attached thereto, through-holes 35 are provided, between which narrow webs 36 (narrower than high) are present. Through the through-openings 35 prevents the side wall 12 of the valve bag 10 on the wall of the investment device by the air flow 7a of the air nozzle 7

sucks, as it can be caused by a Venturi effect.

With reference to Figures 6 to 8 is hereinafter the

Motion explained.

FIG. 6 shows the gripper holder 4 in the receiving position 2, in which the gripper 5 grips the uppermost valve bag 10 of a bag stack 19 at the upper end, on which the bag valve is also provided. This leaves a distance of 1 or 2 cm (or even 3 or 4 cm) between the gripper and the outermost end of the valve bag. By this distance, a collision with the not shown here stop edge for the bag stack 19 is prevented.

The gripper holder 4 is designed here as a tube to supply the here designed as a vacuum gripper 5 with vacuum. The vacuum port 40 is through the hinge point 29 at the

Gripper holder coupling 8 out. When recording, it is possible that about a lift and

lowerable fixing element 34, such as a sucker, the valve bag 10 is fixed at the bag end 14 to the

Take off valve bag 10 in total and smoothen it slightly.

The gripper 5 is attached to the gripper holder 4. Of the

Gripper holder 4 is pivotally received on the gripper holder coupling 8. The gripper holder 4 has a pivot arm 25 on which one end of the drive device 23 designed as a cylinder drive engages. The other end of the

Drive device 23 is pivotable on the

Gripper holder coupling 8 added. An extension of the

Cylinder drive 24 leads to a pivoting of the

Gripper holder 4 and the associated gripper 5. Fixedly connected to the gripper holder 4 and the auxiliary nozzle 27, which also air in the direction of the valve bag in the

Recording room 20 can blow. The auxiliary nozzle 27 but does not blow on the same surface of the valve bag 10 as the air nozzle 7, but on the opposite side. Additional nozzle 27 blows on the same side on which the gripper holder 4 with the grippers 5 takes the valve bag.

The gripper holder 4 is pivotally connected to a holding plate 37, which in turn is fixedly connected to the angle plate 17. On the retaining plate 37 engages the

Coupling rod 9, which hinged at the other end with the

Gripper holder coupling 8 is connected. This means that the retaining plate 37 hinged to the coupling rod 9 and the

Gripper holder 4 is connected. The gripper holder 4 is

pivotally received on the gripper holder coupling 8 and can be transferred by extending the cylinder drive 24 from the position shown in Figure 6 in the position shown in Figure 7.

FIG. 7 shows an intermediate position in which the gripper 5 and the angle plate 17 have already been pivoted towards one another a little way. At the same time, the gripper 5 has become clear from the bag stack 19 because the gripper holder coupling 8 has been raised by the pivot lever 8a and the counter link 8b, which together form a parallelogram guide.

The gripper 5 has the recorded valve bag 10 with the

Sack section 13 introduced into the receiving space 20, which extends between the angle plate 17 and the gripper holder 14. The air flow 7a from the air nozzles 7 of the blowing device 6 now acts on the foremost region of the valve bag 10. The blowing device 6 blows with the air nozzles 7 from the second side 22 of the receiving space in the direction of the second or lower side wall 12 of the valve bag 10. On the first or upper side wall 11 engages from the first side 21 of the receiving space 20 from the gripper 5 of the gripper holder 4 still the valve bag 10 and is released in this position.

By a further extension of the cylinder drive 24, the AufSteckvorrichtung 1 is transferred to the position shown in Figure 8, in which the teat 5 only has a relatively small distance from the angle plate 17. The vacuum of the nipple 5 was previously switched off and the valve bag 10 became a targeted air blast 7 a from the air nozzle 7

reliably positioned on the upper stop 16. In this case slides in the positioning of the valve bag 10 on the air cushion provided by the air nozzle 7 and is guided by the air flow reliably upwards to the upper stop 16. The air flow 7a is here aligned obliquely upward through the bottom or the lower side wall 12 of the valve bag 10.

In addition, if necessary or at particularly difficult

Materials also an air flow from the additional nozzle 27 are activated, which impinges on the top 11 of the valve bag 10 and also supporting a positioning of the

Valve sacks at the top stop 16 provides. Highly schematically here is a sensor 28 is shown, for example, optically detects the front end of the valve bag 10 at the top stop 16. Following this, the air flow 7 and / or the air flow 27 can be reduced in order to avoid drapery on the valve bag and also the

Reduce energy consumption.

When the valve bag 10 is aligned and the roller bar 32 is closed against the belt strip 31, the valve bag is fixed and the air supply can be switched off.

Overall, the invention provides an advantageous

On-plug device and an advantageous method for

Available, which even with flexible and sewn or woven valve bags high Aufsteckraten of much more than 2500 bags per hour with high AufSteckquote is made possible. By a nozzle bar, which is aligned with the back of the valve bag, a reliable alignment of the valve bag can be achieved on an executed in particular as an angle sheet upper stop. Through the air nozzle (s), which acts on the valve bag from behind and below, a reliable plugging is made possible even with an end folded over at the upper end, since the folded air is reliably folded back by the air flow.

For the first time, the invention provides an attaching device with which inferior or wrinkled or bent valve sacks can be attached, and for the first time provides automatic processing.

For fine adjustment, it is preferred that the blowing device as a whole or each individual air nozzle of the blowing device can be adjusted in terms of alignment and / or blowing strength in order to be able to set optimum conditions. In addition, it is preferable for each air nozzle (or all together) to control the timing and duration of the air supply (also individually). LIST OF REFERENCE NUMBERS

1 plug-in device 21 first side

2 pickup position 22 second side

3 alignment position 23 drive device

4 gripper holder 24 cylinder drive

5 grippers 24a piston rod

6 Blowing device 25 Swivel arm from 4

7 air nozzle 26 transfer position vo

7a air flow 27 additional nozzle

8 gripper holder coupling 27a air flow

8a pivot lever 28 sensor

8b counter-link 29 joint

9 coupling rod 30 shooting table

10 Valve bag 31 Belt strip

11 first, upper 32 roll bar

Sidewall 33 eccentric

12 second, lower 34 fixing

Sidewall 35 Passage opening

13 bag section 36 bridge

14 sack end 37 holding plate

15 contact device 40 vacuum connection for

16 top stop 100 packing machine

17 Angle plate 101 filler neck

17a first leg 102 angle sensor

17b second leg 103 predetermined

17c end of 17b angular position

18 air opening 110 empty bag cell band

19 sack stack 120 discharge belt

20 recording room

Claims

Claims :

1. AufSteckvorrichtung (1) for attaching valve bags (10), in particular for attaching woven and / or sewn valve bags (10) on a filler neck (101) of a

Packing machine (100),

with a gripper holder (4) movable between a pickup position (2) and an alignment position (3) and having at least one gripper (5) for gripping a valve bag (10) in the picking position (2)

and with a blowing device (6) with at least one

Air nozzle (7) to align the valve bag (10) in the alignment position (3),

characterized,

in that at least in the alignment position (3) a receiving space (20) for a sack portion (10) of the valve sack (2) is formed between the gripper holder (4) and the blowing device (6) and that the gripper (5) is formed from a first side (3). 21) and the air nozzle (7) are aligned from an opposite second side (22) to the receiving space (20) to act on opposite side walls (11, 12) of a valve bag (10) received in the receiving space (20).

2. AufSteckvorrichtung (1) according to the preceding claim, wherein a contact device (15) with an upper stop (16) delimits the receiving space (20) and a valve bag (10) defined thereon can be aligned.

3. AufSteckvorrichtung (1) according to the preceding claim, wherein the abutment means (15) comprises an angle plate (17) with the upper stop (16).

4. Aufsteckvorrichtung (1) according to one of the preceding

Claims, wherein the gripper holder (4) with the

Blower (6) is coupled. A plug-in device (1) according to the preceding claim, wherein the gripper holder (4) is movable relative to the blowing device (6).

On-plug device (1) according to one of the preceding

Claims, wherein on the contact device (15) air openings (18) are formed.

On-plug device (1) according to one of the preceding

Claims, wherein the gripper holder (4) on a

Gripper holder coupling (8) is pivotally received and wherein the gripper holder coupling (8) is movable to the

Gripper holder (4) from the receiving position (2) in the

Align alignment position (3).

On-plug device (1) according to one of the preceding

Claims, wherein a drive means (23) for

Pivoting of the gripper holder (4) and / or the

Blowing device (6) is provided, wherein the

Drive device (23) in particular comprises a cylinder drive (24).

9. AufSteckvorrichtung (1) according to the preceding claim, wherein the drive means (23) with the

Gripper holder coupling (8) and with a pivot arm (25) of the gripper holder (4) is coupled.

10. Aufsteckvorrichtung (1) according to one of the preceding

Claims, wherein the abutment means (15) is pivotally coupled to the gripper holder (4) and wherein the

Gripper holder (4) is pivotally mounted on the gripper holder coupling (8).

11. Aufsteckvorrichtung (1) according to one of the preceding

Claims, wherein the gripper holder coupling (8) between a lower receiving position (2) and an upper

Transfer position (26) is pivotable.

12. AufSteckvorrichtung (1) according to one of the preceding

Claims, wherein a transport device for transporting a valve sack (10) is provided, which comprises at least one belt strip (31) and / or a roller bar (32).

13. Aufsteckvorrichtung (10) according to one of the preceding

Claims, wherein the air nozzle (7) is at least partially aligned in the V-shaped opening of the upper stop (16).

14. Aufsteckvorrichtung (10) according to one of the preceding

Claims, wherein the blowing device (6) comprises a tube with a plurality of air nozzles (7) and is fixed to the angle plate (17), wherein between the tube and the angle plate (17) a plurality of through holes (35) are formed.

15. Aufsteckvorrichtung (10) according to one of the preceding

Claims, wherein at least one auxiliary nozzle (27) provided and from a first side (21) in the direction of

Recording space (20) is aligned.

16. A fitting device (10) according to the preceding claim, wherein the auxiliary nozzle (27) is attached to the gripper holder (4).

17. A method for attaching valve bags (2), in particular for attaching woven and / or sewn valve bags (10) on a filler neck (3) of a packing machine (1), wherein in a receiving position (2) a valve bag (10) with a Gripped gripper (5) and aligned in an alignment position (3) of the valve bag (10) with an air blast of an air nozzle (7),

characterized,

in that the gripper (5) grips the valve bag (10) on a first side wall (11) and the air nozzle (7) acts on the opposite second side wall (12) and then the gripper releases the first side wall around the first side wall Make valve bag (10) in at least partially vertical direction.

18. Method according to the preceding claim, wherein the gripper (4) engages the upper side wall (11) of a valve bag (10) lying on a stack of sacks (19).

19. The method according to one of the two preceding claims, wherein the air nozzle (7) is aligned for aligning at least partially upwards and from below against the second side wall (12) of the valve bag (10) blows.

20. The method according to any one of the three preceding claims, wherein the air nozzle (7) is operated with a flow of air at a higher level until a sensor (28) detects the valve bag (10) at an upper stop (16) and wherein the air flow then is reduced to a lower level or switched off.

21. The method according to any one of the four preceding claims, wherein at least one additional nozzle (27) directs a flow of air on the upper side wall (11).

22. The method according to any one of the five preceding claims, wherein the auxiliary nozzle (27) emits an air flow when the air nozzle (7) and the gripper holder (4) have been pivoted at least a little bit towards each other.

23. Method according to one of the six preceding claims,

wherein the air flow of the auxiliary nozzle (27) is reduced or switched off when a sensor (28) detects the valve bag (10) at the upper stop (16).