EP2340206A1

EP2340206A1 - Device and method for fitting valve bags

Info

Publication number: EP2340206A1
Application number: EP09736123A
Authority: EP
Inventors: Vincent Delatour
Original assignee: Haver and Boecker OHG
Current assignee: Haver and Boecker OHG
Priority date: 2008-09-26
Filing date: 2009-09-22
Publication date: 2011-07-06
Anticipated expiration: 2029-09-22
Also published as: DE102008049255A1; WO2010034460A1; EP2340206B1; EA201190001A1; DK2340206T3; EA022541B1; ES2553896T3; CN102164822B; CN102164822A

Abstract

The invention relates to a device and to a method for fitting and filling valve bags (2), comprising a bag fitting device (10) for fitting the valve bags, a gripper device (4) and a fitting device (5), wherein the gripper device is provided for gripping an empty valve bag, and wherein the fitting device is suited for fitting a valve bag on a filling nozzle (27) of a rotating packing machine (1) equipped with a plurality of filling nozzles. A movement of the gripper device can be controlled by a rotatable eccentric device, and the eccentric device can be rotated using a motor in order to periodically receive valve bags and fit them by means of the fitting device.

Description

Device and method for attaching valve bags

description

The invention relates to a device and a method for attaching valve neck and in particular a device for attaching valve bags to one or the filler neck of a packing machine, as well as a equipped with a packing machine and a Sackaufsteckvorrichtung packing system.

Such Sackaufsteckvorrichtungen or slip-on machines and packaging systems have become known in the art. For example, from DE 35 25 348 C2 discloses a device for attachment to the filler neck or the filler neck of a packing machine, are provided in the two suction bars, which seize on both sides of the bag valve a scattered bag and open the bag valve. The movement of the squeegee is controlled by air cylinder. Subsequently, the bag is accelerated with open bag valve via drive means and shot in the direction of the filling tube. In the known device, the gripper strips are arranged to open the bag valve in the longitudinal direction stationary, as well as it is the drive means.

Since the announcement of this device for attaching valve neck speed when filling Gutern in valve bags has increased significantly, which also the demands on the motion coordination and the control of the packing system and the slip-on machines have increased accordingly. Today's demands on flexibility and Plug speed meets this known device only conditionally.

It is therefore the object of the present invention to provide a device for attaching valve bags, which allows flexible control and high performance.

This object is achieved by a device having the features of claim 1 and by a packing system with the features of claim 10. The inventive method is the subject of claim 14. Preferred developments of the invention are subject of the dependent claims. Further features of the present invention will be defined in the following description.

The Sackaufsteckvorrichtung invention is used for attaching bags and in particular for attaching valve bags and has at least one gripper device and at least one slip-on. The gripper device is provided and suitable for gripping an empty valve sack and the slip-on device is suitable for mounting a valve sack on a filler neck of a rotating packaging machine equipped in particular with a plurality of guide lugs. In this case, a movement of the gripper device via a rotatable eccentric is controllable, wherein the eccentric means is rotatable by means of a motor to periodically accept by means of the gripping device valve bags and aufzustecken means of Aufsteckeinrichtung.

The invention has many advantages. A significant advantage of the Sackaufsteckvorrichtung invention is the considerable flexibility. By means of the rotatable eccentric device, which is driven by a particularly electric motor, a flexible control of the movement of the gripper can be achieved. tion and adapted to the particular conditions control of Aufsteckvorrichtung total done.

It is particularly advantageous that the rotational speed of the eccentric device can be increased or reduced via the motor with almost no time delay. Thus, it is always possible to react to changing conditions. The speed of a movement can even be accelerated or decelerated while the movement is still being performed by the gripper device. As a result, it is possible to respond flexibly to changing conditions, so that the overall attachment rate can be increased. For example, if only 1% of the bags are not placed on a filler neck, 36 bags will accumulate on the ground after one hour at a filling rate of 3600 bags, which would add up to 360 bags in 10 working hours unless the bags are collected which is necessary at periodic intervals so as not to impair the function.

For modern bottling services, e.g. filling one bag or more per second already means an improvement of the slip rate of only 0.1% of e.g. 99.5% to 99.6%, a significant reduction in incorrectly plugged sacks, in this example relatively 20%.

With the invention, the reliability of a packing system according to the invention is increased, wherein the filling speed is simultaneously still risigerbar.

In a preferred embodiment of the invention, the gripper device is pivoted by means of the eccentric in a cycle or cycle from a bag receiving position to a bag transfer position for transferring the valve bag to the slip-on device and back into the bag-receiving position. In particular, a cycle represents a closed cycle in which the eccentric not go down and is pivoted forth, but only turns in one direction. A movement of the eccentric device taking place only in one direction of rotation is advantageous, since a rotation that is in particular continuous in one direction does not load the eccentric device and the gripper device as much as is the case with constantly changing directions of movement. By avoiding changing directions of rotation, the invention contributes to increasing the life of a device according to the invention.

In preferred embodiments, the speed of the engine of the eccentric is changed within a cycle in a steady manner. This means that the control device controls the rotational speed of the motor in such a way that the number of start / stop operations is reduced as much as possible, in particular, a continuous passage of the motor is sought. By a continuous adjustment of the speed of the motor to the current conditions can be adjusted at any time for the current Aufsteckgeschwindigkeit optimal rotational speed of the eccentric device.

Thus, for example, the movement of the gripper device can be reduced via a reduced rotational speed of the motor and thus of the eccentric device, when the suction grippers of the gripper device approach the next bag to be picked up, although a certain waiting time must still be bridged before picking up.

By reducing the rotational speed of the eccentric device, the necessary waiting time can be bridged until the next valve sack is accepted, while at the same time the moving components are spared by the reduced rotational speed. In the prior art, on the other hand, each movement was carried out at maximum speed, resulting in a large number of start / stop operations with maximum acceleration and deceleration, respectively. An adaptation of the movement speed By contrast, the gripper device within a cycle to the currently prevailing conditions permits a more gentle mode of operation, as a result of which an overall higher slip-on performance is possible, since the permissible load limits of the respective components are not achieved despite the higher speed.

If compressed air cylinders are used to control the gripper device, vibrations may occur which lead to a reduction in the attachment rate at higher powers. With the invention, harmful vibrations are avoided.

Advantageously, the plug-on device can be activated when detecting a start signal. The gripper device can be activated upon detection of a start signal, so that overall the Sackaufsteckvorrichtung when detecting or with the forwarding of a start signal can be activated or controlled to adjust the movement of the gripper device or the Aufsteckvorgang in time to the detection of a start signal.

In particular, when a start signal is detected, a new valve sack is picked up by a sack stack and transferred to the slip-on device, which subsequently attaches the sack to a filler neck.

However, it is also possible and preferred that upon detection of a start signal, a bag received on the slip-on device is accelerated by means of an acceleration device and attached to a filler neck rotating past. In this variant, the valve bag is accelerated, for example, almost without time delay after detecting the start signal and is attached very short time later on the filler neck. Of course, fixed or predefinable or adjustable waiting times between the detection a start signal and the activation of the gripper device and / or the Aufsteckeinrichtung possible.

In a particularly preferred embodiment, the respective time interval of successive start signals is detected and evaluated by the control device. In that case, it is particularly preferred if a rotational speed of the motor of the eccentric device is changed as a function of the currently detected time interval.

Typically, a start signal is issued when a filler neck of a device has reached a predetermined angular position. Now, if the time interval of a start signal is reduced to a following start signal compared to a previous time interval, this indicates an increase in the rotational speed of the packing machine. If a reduction in the time interval and thus an increase in the rotational speed of the packing machine is detected, the control device determines a correspondingly adapted base speed of the motor, in order to accelerate the picking up of a valve bag from a stack of valve bags. Conversely, if the time interval between two successive start signals increases, this indicates a reduction in the rotational speed of the packaging machine, whereupon the rotational speed of the motor of the eccentric device is correspondingly reduced.

In this way results in a very simple self-regulating operation of Sackaufsteckvorrichtung on a packing machine. The operation of the Sackaufsteckvorrichtung takes place automatically, provided that the packing machine provides corresponding start signals. On a reduction or an increase in the rotational speed of the packaging machine, the Sackaufsteckvorrichtung reacts flexibly and adapts to a change in the shortest possible time. As a result, high and highest Aufsteckquoten can be achieved at high and highest Aufsteckraten while the individual components of the Sackaufsteckvorrichtung be operated in a gentle manner, whereby the life is increased despite increasing the capacity.

In a preferred refinement, the gripper device is arranged pivotably and is suitable and provided for gripping and receiving a valve bag of a bag bundle arranged on a receiving surface of a depositing table in a first pivoting position and transferring it to the plug-in device in a second pivoting position.

In this case, the slip-on preferably consists of at least two Aufsteckteilen, of which at least one Aufsteckteil is pivotally mounted. The motor serves as a common drive for the pivoting of the gripper device and for the pivoting of the at least one pivotable plug-on part. For this purpose, the gripper device is mechanically coupled to the pivotable plug-on part via a coupling mechanism. This means that preferably not only the gripper device but also the slip-on device are controlled via the eccentric device. The mechanically coupled to the gripper device Aufsteckeinrichtung is also driven by the eccentric, so that there is a particularly flexible and easy control of Sackaufsteckvorrichtung.

Particularly preferably, the slip-on device is arranged to be adjustable in the longitudinal direction relative to the gripper device in order to be able to compensate for different bag dimensions. If, for example, different sack widths are used for different materials to be filled or for different container sizes, then the radial distance of the slip-on device from the filler neck can be adjusted accordingly in a simple manner. As a result, the attachment rate can be further increased with different bag dimensions. On the other hand, due to the flexible control of the rotational speed of the eccentric device, it is also possible to compensate to a certain extent for different bag dimensions, since the rotational speed can be adapted.

In particular, the packaging installation according to the invention has a rotatable packaging machine for filling goods into valve sacks, wherein the rotatable packaging machine has a plurality of filling sockets arranged distributed over the circumference of the packaging machine. Furthermore, at least one control device and at least one arranged at a predetermined angular position Sackaufsteckvorrichtung for attaching the valve bags to the filler neck of the packing machine is provided. The attachment of the valve bags on the filler neck by means of a slip-on. At least one gripper device is provided for gripping an empty valve sack. A movement of the gripper device is controllable via a rotatable eccentric, wherein the eccentric means is rotatable by means of a motor to periodically accept valve bags and aufzustecken means of Aufsteckeinrichtung.

The packing system according to the invention also has many advantages. In the packaging system according to the invention, the capacity can be increased, while at the same time the Sackaufsteckquote can be improved.

Preferably, the gripper device is pivotable by means of the eccentric in one cycle from a bag receiving position to a bag transfer position for transferring the valve bag to the plug-on device and back into the bag receiving position.

Advantageously, at least one sensor device is provided with which is detectable when a filler neck reaches a predetermined angular position. In particular, at Reaching a prescribed angular position issued a start signal to the Sackaufsteckvorrichtung.

As a sensor device, a mechanical sensor can be used, which triggers a signal when, for example, the filling nozzle reaches a predetermined angular position. It is also possible that an optical, magnetic or other sensor serves to detect the position of the filler neck. Furthermore, it is possible that a central rotary encoder, e.g. at the axis of rotation of the packing machine triggers the corresponding start signals, since the position of the individual filler neck over the circumference of the packing machine and thus relative to the central axis of rotation of the packing machine is known and thus can be deduced from the signal of the rotary encoder on the respective angular position of the filler neck.

In preferred developments, the control device adapts the rotational speed of the motor of the eccentric device to a rotational speed of the packing machine in order to essentially ensure a continuous rotation of the eccentric device.

In preferred developments, the packing installation has a previously described attachment device.

In the method according to the invention for attaching valve socks to the filling nozzles of a rotating packing machine equipped with a plurality of filling nozzles, the gripper device grips an empty valve bag and the plug-on device tucks the empty valve bag onto a filling nozzle. In this case, a movement of the gripper device is controlled via a rotatable eccentric device. The rotatable eccentric is rotated by means of a motor to periodically accept valve bags and attach them by means of the slip-on device. The method according to the invention is also very advantageous. With the method according to the invention the Aufsteckquote can be increased while the components are used in a gentle manner.

Preferably, a speed of the motor of the eccentric is changed continuously or continuously in a cycle. This means that a stop of the engine within a cycle is avoided if possible in order to minimize acceleration and deceleration, while at the same time the highest possible Aufsteckgeschwindigkeit is achieved.

Preferably, the slip-on device and / or the gripper device is activated upon detection of a start signal. Particularly preferably, the time interval of successive start signals is detected, in order in particular to change the rotational speed of the motor of the eccentric device as a function of the detected time interval.

In preferred embodiments, the basic speed of the engine is changed when a time difference between two time intervals exceeds a predetermined level. That is, within a normal cycle, the engine has a base speed which is variable within the cycle according to a predetermined schedule, for example, to realize latencies above a reduced speed. If the time interval between the start signals changes, the basic speed of the motor can be adjusted accordingly, while the variations in the speed within a cycle are maintained accordingly.

Further advantages and possible applications of the present invention will become apparent from the embodiments which are described below with reference to the accompanying figures. Show:

1 is a schematic plan view of a packing plant with a packing machine and a device for attaching valve neck,

2 shows an overall view of the device according to the invention for attaching valve neck;

FIG. 3 is a perspective view of the clip-on head of the device of FIG. 2 in a first position; FIG.

4 shows the plug-on head of the device in a second position;

FIG. 5 shows the plug-on head of the device according to FIG. 2 in a third position; FIG.

FIG. 6 shows the plug-on head of the device according to FIG. 2 in a fourth position; FIG.

Fig. 7 is a schematic diagram in which the rotational speed of the eccentric is plotted over the distance of the filler in the circumferential direction; and

Fig. 8 is a schematic diagram in which the rotational speed of the eccentric is shown over time.

With reference to the figures, an embodiment of the packing installation 80 with a slip-on device 10 will now be explained. The slip-on device 10 is designed as a slip-on machine and serves to attach valve sacks 2 to the filling nozzle or tubes of a packing machine 1.

The slip-on device 10 can also be retrofitted to existing packing machines 1. So it is possible in principle, any existing rotary packaging machine 1 with a Aufsteckvor- direction 10, wherein the slip-on device 10 automatically adapts automatically to the rotational speed of the packing machine 1.

The control and adaptation of the movement sequences to one another will be described in detail with reference to FIGS. 7 and 8.

FIG. 1 shows a packing installation 80 which has a packing machine 1 for filling products into valve bags 2, a slip-on machine 10 and a discharge belt 70 for removing the filled valve bags 2. The packing machine 1 is designed here as a rotary filling system with a plurality of filling nozzles 27, onto which the valve sacks 2 to be filled are plugged by means of the slip-on machine 10.

The packing machine 1 rotates in the direction of rotation 48, while the plugged valve bags 2 are filled. The ready-packed valve bags 2 are deposited on the discharge belt 70 and thus transported away.

For example, such sacks or valve sacks 2 are made with building materials, such as e.g. Cement or automatically filled with other powdery or granular substances. For this purpose, for example, the rotating packaging machine 1 shown in FIG. 1 is used. It is also possible to use a single packer or an inline packer. In rotating packaging machines 1, the plurality of filling nozzles 27 are arranged distributed symmetrically over the circumference. The device 10 shown in Fig. 2 for attaching the valve bags 2 is arranged in a predetermined angular position or Aufsteckposition 58 of the packing machine 1.

Now, if a filler 27 of the packing machine 1 is in the Aufsteckposition 58, an empty valve bag 2 is attached with the slip-on 10 on the filler neck 27 with the slip-10. Modern packaging machines 1 with a number of eight or twelve or even sixteen or even more filling nozzles 27 have enormous throughput capacities at which filling rates on the order of 1 sack per second or more are possible. This means that about 3,000 to 5,000 bags are filled per hour, which is an enormous logistical requirement.

To automate the Aufsteckens therefore a slip-on 10 is used with a blank bag magazine 30 for temporary storage of the empty valve sacks 2.

The operator then only has to insert bag bundles 3 into the compartments 31 of the empty bag magazine 30. The bag bundles 3 are automatically fed to the delivery table 7 and are first transported to a waiting area 28 and then to a Aufnähmetlache 6, where they are lifted individually. Subsequently, the valve of the valve bag 2 is opened and the valve bag 2 is projecting onto the filling nozzle 27 of the packing machine 1.

3 to 6, the plug-on head 20 of the slip-on machine 10 according to the invention is shown in four different positions in an enlarged perspective view, the plug-in head 20 being shown in the position for processing wide valve bags 2 in the illustrations according to FIGS. 3 and 4, while in the illustrations according to FIGS. 5 and 6 the plug-on head 20 is set to the processing of narrower valve bags 2.

The plug-on head 20 of the plug-on machine 10, shown enlarged in the perspective view according to FIG. 3, comprises a housing 32 for the storage and arrangement of the various components.

On the housing 32, the gripper device 4 is pivotally provided, which comprises a suction bar 19 which is in a first pivot position 8 in the bag acceptance position 53 and the top valve bag 2 of a flat stacked stacked ten valve bags 2 existing bag bundle 3 takes. For this purpose, the suction strip 19 has a plurality of suction devices 33 which are spaced apart from one another in the longitudinal direction 13 and which can preferably be individually switched on and off in order to adapt the active length of the suction strip to the current bag width 34.

Furthermore, a Aufsteckeinrichtung 5 is arranged on the housing 32, which consists of two Aufsteckteilen 11 and 12, of which the Aufsteckteil 11 is pivoted respectively when opening or closing.

The Aufsteckeinrichtung 5 includes the Aufsteckteile 11 and 12, wherein at each Aufsteckteil an angled plate 22 and 23 a Sackventilöffnungseinrichtung 21 is provided. Furthermore, a roller bar 25 is provided on the attachment part 11 and a belt drive 26 on the attachment part 12. The roller rail 25 and the belt drive 26 form an acceleration device 24. The belt drive 26 serves to drive and accelerate one between the roller rail 25 and the belt drive 26 Valve sacks 2.

The roller bar 29 serves to guide the valve bag 2 when plugging in and is opened only in case of failure. The pressure cylinder 49 presses the roller bar 29 uniformly against the belt drive 26th

In Fig. 3, the plug-on head 20 is shown in a position in which the suction bar 19 is pivoted into the first pivot position 8, to lift in the bag acceptance position 53 a new valve bag 2 of the bag bundle 3. The suckers 33 of the suction bar 19 take the valve bag 2 in the blind valve area. At the same time, in the position according to FIG. 3, the slip-on device 5 or its slip-on part 11 are shown in a pivoted, ie, moved-apart position. The movements of the Aufsteckteils 11 and the gripper device 4 with the suction bar 19 are mechanically positively coupled via the coupling mechanism 15, so that during a movement of the gripper device. 4 automatically also the slip-5 moves. The movement is controlled by a common drive 14, which comprises an eccentric device 51 and an electric motor 50.

The drive 14 acts via a transmission arm 52 directly on the pivot arm 37 of the Aufsteckeinrichtung 5, which transmits the torque on the pivot axis 41 on the lever 36, which in turn transmits the torque to the lever 39 and finally to the lever 40 via the pivot point 42. The thus formed two toggle levers 16 and 17 control the movement of the gripper device 4 and 5 Aufsteckeinrichtung such that collisions are avoided, while at the same time a substantially maximum operating speed and reliability is achieved. This means here that during the transfer from the position shown in FIG. 3 to the second pivot position 9 shown in FIG. 4, first the suction bar 19 is pivoted upward at high speed, while the closing speed of the pivoting movement of the attachment part 11 over the entire pivoting operation remains almost constant, so that the risk of a collision is reliably avoided. The suction bar 19 and the gripper device 4 are located in Fig. 4 in the bag transfer position 54 for transferring the valve bag 2 to the slip-5.

At the same time only a drive 14 is required by the positively controlled mechanical coupling of the two pivotable components, namely the gripper device 4 and 5 Aufsteckeinrichtung, whereby a significant additional effort is saved.

The transmission of the pivoting movement to the gripper device 4 is effected by the lever 40, which is pivoted about the pivot point 46 and thereby causes a movement of the pivotable about the pivot point 43 first coupling rod 44 and the second coupling rod 45, and the lever 47. The first coupling rod 44 is here formed by a spring device 38 in the form of a pneumatic cylinder in order to provide different bag bundle strengths. to be able to equal. By parallel to the lever 47 arranged second coupling rod 45 a parallelogram is formed, which causes a constant alignment of the suction bar, so that does not change in the movement, the position of the blind valve portion 35 for horizontal alignment.

After the transfer from the position shown in Fig. 3 in the position shown in Fig. 4, the bag valve is opened by the closing operation of the angled plates 22 and 23 of the bag opening device 21, while the valve bag 2 down between the roller bar 25 and the belt drive 26 extends. After the valve has been opened, the belt drive 26 is activated and the valve bag 2 is shot in the longitudinal direction 13 onto a filler neck 27 of a packaging machine 1 or filling system 80. The suction pad 19 is located in the second pivot position. 9

The states of the plug-on head 20 shown in FIGS. 5 and 6 basically correspond to the states shown in FIGS. 3 and 4, but the plug-on head 20 is set to process narrower valve bags 2.

In order to keep the distance to be bridged from the end of the slip-on device 5 to the start of the filler neck 27 even with narrower valve sacks 2 to a constant and as small as possible, the slip-on device 5 is moved in the longitudinal direction 13. This results in a transfer from the state shown in Fig. 3 by longitudinal displacement of the state shown in Fig. 5.

At the same time, the gripper device 4 has kept its position stationary, since the Aufnähmetlache 6 of the tray table 7 remains stationary. The coupling mechanism 15 allows a very comfortable and reliable operation of the slip-on 10, since the slip-5 is mounted relative to the gripper device 4 on the slide bar 18 slidably. By the coupling mechanism 15 which acts on the slide bar 18, it is ensured that even in the position shown in Fig. 5 for narrower valve bags 2 of the drive 14 reliably coordinated pivoting movements of the gripper device 4 and 5 Aufsteckaufrichtung causes. The coordination of the movements does not have to be changed.

FIG. 6 shows the state in which the slip-on device 5 is closed, in which a blind valve of a valve sack 2, not shown, has been opened by the opening device 21, so that the valve sack 2 could be shot onto a filler neck 27.

In Fig. 7 is a schematic diagram is shown, in which the speed 55 of the eccentric 51 is shown over the circumferential distance of two filler neck 27 in a concrete example. The rotational speed 55 of the eccentric device 51, which is designed in particular as a crank drive, above the distance 56 between two filling nozzles 27 results as curve 61, whereby the rotational speed 55 of the eccentric device 51 must increase correspondingly with decreasing circumferential distance between two filling nozzles 27, in order to achieve the correspondingly larger plugging rate of the eccentric device 51 Valve bags 27 to be able to meet at a given packing machine 1 with a given scope. If, for example, a packing machine 1 with a certain circumference is equipped with only 4 filling nozzles 27, half the speed 55 with respect to a packing machine 1 of the same diameter with eight filling nozzles 27 is sufficient, since the corresponding circumferential distance between two filling nozzles 27 has doubled.

FIG. 8 shows a schematic diagram of the rotational speed 55 of the eccentric device 51 over the expiry time. If, for example, a first time interval 56 is one thousand milliseconds between a first start signal 57 and a second start signal 57 and a second time interval increases to one thousand ten milliseconds, this means at unchanged speed 55 of the eccentric device 51 that the crank of the crank drive is at the triggering of the second start signal is in a slightly advanced angular position. To compensate for this, the speed 55 of the eccentric 51 is correspondingly reduced in response to the extended time interval 56, so that in the illustrated embodiment, after the third period or after the third cycle, the eccentric 51 is again in the intended position, if the Start signal 57 is triggered.

If the time interval 56 then decreases to, for example, nine hundred and ninety milliseconds, the start signal 57 is already triggered before the eccentric device is in the intended position. Then, the speed 55 of the eccentric 51 is slightly increased, so that after this cycle, the eccentric 51 is again in the intended position when the start signal 57 is triggered.

About the illustrated principle, the Sackaufsteckvorrichtung 10 of the packing station 80 can be automatically adjusted to the rotational speed of the packing machine 1. For this purpose, a sensor device 59 (see FIG. 1) is provided at an angular position 60 in order to detect an approaching filler neck 27 at an early stage so that the slip-on device 10 still has sufficient time to place a sack 2 at the slip-on position 58.

By the transmission of the start signals 57 by the sensor device 59 and by the analysis of their time intervals, the Sackaufsteckvorrichtung 10 automatically sets without further information on the prevailing conditions. It follows that the Sackaufsteckvorrichtung 10 is not only suitable for use in the packaging machine 1, but is also suitable for use on any rotating packaging machines.

By adapting the rotational speed 55 of the eccentric device 51 after each cycle or after a predetermined number of cycles, a flexible control of the packing system 80 is made possible, which allows high filling rates with high Aufsteckquoten at a gentle operation. List of reference numbers:

1 packing machine 36 lever

2 Valve bag 37 Swivel arm

3 sack bundles 38 spring device

4 gripper device 39 lever

5 attachment device 40 lever

6 receiving surface 41 fulcrum

7 Storage table 42 Fulcrum

8 1. Swivel position 43 Pivot point

9 2. Swivel position 44 1. Coupling rod

10 Slot machine 45 2. Coupling rod

11 Plug-in part 46 Pivot point

12 Attachment 47 Lever

13 longitudinal direction 48 direction of rotation

14 drive 49 pressure cylinder

15 coupling mechanism 50 motor

16 Knee lever 51 Eccentric device

17 Knee lever 52 Transfer arm

18 slide bar 53 sack accepting position

19 Suction bar 54 Bag transfer position 20 Attachment head 55 Speed

21 bag opening device 56 time interval

22 Angled plate 57 Start signal

23 Angled sheet 58 Attachment position

24 acceleration device 59 sensor device

25 roller bar 60 angular position

26 Belt drive 61 Curve

27 filling nozzle 70 discharge conveyor

28 waiting area 80 packing plant

29 roller bar

30 empty bag magazine

31 subject

32 housing 33 suckers

34 sack width

35 blind valve area

Claims

Claims :

1. Sackaufsteckvorrichtung (10) for attaching valve bags (2) with a gripper device (4) and with a Aufsteckeinrichtung (5), wherein the gripper means (4) for gripping an empty valve bag (2) is provided and wherein the Aufsteckeinrichtung (5) is suitable, a valve bag (2) on a filler neck (27) one with a plurality of filler neck

(27) equipped rotating packaging machine (1) aufzustecken, characterized in that a movement of the gripper device (4) via a rotatable eccentric device (51) is controllable, wherein the

Eccentric means of a motor (50) is rotatable to periodically accept valve bags (2) and by means of

Put on slip-on device (5).

2. Sackaufsteckvorrichtung (10) according to claim 1, wherein the gripper means (4) by means of the eccentric device (51) in a cycle from a bag acceptance position (53) to a bag transfer position (54) for transfer to the slip-on device (5) and back into the bag acceptance position (53) is pivotable.

3. Sackaufsteckvorrichtung (10) according to claim 2, wherein a rotational speed (55) of the motor (50) of the eccentric device (51) is continuously changed within a cycle.

4. Sackaufsteckvorrichtung (10) according to one of the preceding claims, wherein the Aufsteckeinrichtung (5) upon detection of a start signal (57) can be activated.

5. Sackaufsteckvorrichtung (10) according to one of the preceding claims, wherein a time interval (56) of successive start signals (57) can be detected.

6. Sackaufsteckvorrichtung (10) according to one of the preceding claims, wherein a rotational speed (55) of the motor (50) of the eccentric device (51) in dependence on the detected time interval (56) is variable.

7. Sackaufsteckvorrichtung (10) according to any one of the preceding claims, wherein the speed (55) of the motor (50) is variable, when a time difference exceeds a predetermined amount.

8. Sackaufsteckvorrichtung (10) according to one of the preceding claims, wherein the gripper device (4) is pivotally provided and is suitable, a valve bag (2) on a receiving surface (6) of a storage table (7) arranged bag bundle (3) in a first To take and receive pivot position (8) and transfer in a second pivot position (9) to the Aufsteckeinrichtung (5), wherein the Aufsteckeinrichtung (5) of at least two Aufsteckteilen

(11,12), of which at least one Aufsteckteil (11) is pivotally mounted, and wherein the motor (50) as a common drive (14) for the pivoting of the gripper device (4) and the pivotable Aufsteckteils (11) is provided in that the gripper device (4) and the pivotable plug-on part (11) are mechanically coupled via a coupling mechanism (15).

9. Sackaufsteckvorrichtung (10) according to any one of the preceding claims 9 to 12, wherein the Aufsteckeinrichtung (5) in the longitudinal direction (13) relative to the gripper device (4). is arranged adjustable to compensate for different bag sizes can.

10. packing installation (80) with a rotatable packing machine (1) for filling goods in valve bags (2), with a plurality of circumferentially of the packing machine (1) distributed filling nozzle (27), at least one control device and at least one at a predetermined angular position

(58) arranged Sackaufsteckvorrichtung (10) for attaching the valve bags (2) on the filler neck (27) by means of a Aufsteckeinrichtung (5), wherein at least one gripper device (4) for gripping an empty valve bag (2) is provided, characterized in that a movement of the gripper device (4) via a rotatable eccentric (51) is controllable, wherein the eccentric means of a motor (50) is rotatable to periodically valve bags (2) to accept and aufzustecken means of the slip-on (5).

11. Packing installation (80) according to claim 10, wherein the gripper device (4) by means of the eccentric device (51) in a cycle from a bag acceptance position (53) to a bag transfer position (54) for transfer to the slip-on device (5) and back into the bag acceptance position (53) is pivotable.

12. packing installation (80) according to any one of the preceding claims 10 or 11, wherein a sensor device (59) is provided, with which is detectable when a filler neck (27) reaches a predetermined angular position (60), whereupon a start signal (57) the Sackaufsteckvorrichtung (10) can be dispensed.

13. packing installation (80) according to any one of the preceding claims 10 to 12, wherein the control device, the rotational speed (55) of the Motor (50) to a speed of the packing machine (1) adapts to substantially ensure a continuous rotation of the eccentric (51).

14. A method for attaching valve bags (2) to a filler neck (27) of a plurality of filling nozzles (27) equipped rotating packing machine (1), wherein a gripper device (4) takes an empty valve bag (2) and in which a slip-on ( 5) the empty valve bag (2) aufsteckt on a filler neck, characterized in that a movement of the gripper device (4) via a rotatable eccentric means (51) is controlled, wherein the eccentric means by means of a motor (50) is rotated to periodically valve bags ( 2) to accept and by means of slip-on device (5) aufzustecken.

15. The method of claim 14, wherein a rotational speed (55) of the motor (50) of the eccentric device (51) is optionally changed continuously or continuously in one cycle.

16. The method according to any one of the preceding claims 14 to

15, wherein the Aufsteckeinrichtung (5) when detecting a start signal (57) is activated.

17. The method according to any one of the preceding claims 14 to

16, wherein a time interval (56) of successive start signals (57) is detected.

18. The method according to any one of the preceding claims 14 to 19, wherein a rotational speed (55) of the motor (50) of the eccentric device (51) in dependence on the detected time interval (56) is changed.

19. The method according to any one of the preceding claims 14 to

18, wherein the speed (55) of the motor (50) is changed when a time difference exceeds a predetermined amount.