DE102007046776A1 - Device for attaching valve bags - Google Patents

Abstract

Apparatus by means of which valve bags can be fitted onto a filling nozzle (27) of a packing machine (1), having a fit-on head (20) on which are provided a pivotable gripper device (4) and a fit-on device (5), wherein the gripper device is provided and suitable for gripping and accommodating in a first pivoting position a valve bag of a bundle of bags arranged on an accommodating surface of a set-down table (7) and for transferring this valve bag, in a second pivoting position, to a fit-on device, the fit-on device being provided and suitable for opening the valve of the valve bag and accelerating the valve bag in order for it to be fitted on. The fit-on device here comprises two fit-on parts (11, 12), of which one fit-on part (11) is arranged in a pivotable manner. The fit-on device is arranged such that it can be adjusted longitudinally in relation to the gripper device, in order for it to be possible to compensate for different bag dimensions. Also provided is a common drive for the pivoting of the gripper device and of the pivotable fit-on part, the gripper device and the pivotable fit-on part being coupled mechanically via a coupling mechanism.

Description

The The invention relates to a device for attaching valve bags and in particular a device for attaching valve bags on a filler neck of a packing machine.

Such devices or slip-on machines have become known in the art. For example, is from the DE 35 25 348 C2 a device for attachment to the filler neck or the filler neck of a packing machine become known, in which two suction bars are provided which engage on both sides of the bag valve a scattered bag and open the bag valve. 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 bars are arranged to open the bag valve in the longitudinal direction stationary, as well as it is the drive means.

There the distance of the Aufsteckvorrichtung of the packing machine in the Usually unchangeable and there are different bag sizes Can be driven on a packing machine has become It has been proven that with smaller sack widths it is increasingly becoming a mistake when attaching or shooting up the bags comes. It has been found out that on the bigger one Distance between the end of the drive means of the slip-on machine and the beginning of the filler. Consequently, one is Device desirable in which the distance between the end of the drive means and the filler neck adjustable is. Since the shift of the whole attaching machines too expensive is, a device was constructed in which the gripper bar for opening the bag valve in the transport direction of the bag is stationary while the drive means is provided adjustable in the longitudinal direction. So can at a fixed provision of the valve bags the gripper bar always in the same place the bags take while the drive means in the longitudinal direction adjusted depending on the width of the bags will always be an optimal distance to the filler neck comply with the packaging machine, so that each one is essentially optimal Slip result is achieved.

at This prior art is now the gripping device for gripping the sacks stationary while the drive means is arranged displaceably in the longitudinal direction. Farther the gripper is provided pivotable about a longitudinal axis, while the drive means two pivotable components includes, which accelerate the bag when closed and can shoot up on the filler neck.

This known state of the art works reliably. However, it has proved to be disadvantageous that the different Movements of the drive means and the gripper device in time must be coordinated exactly. Because you have to Safety times are provided, so to carry out the various movements a considerable amount of time available must be made. This becomes a possible capacity increase limited.

It Therefore, the object of the present invention is a device for attaching valve bags available to provide, which allows a high Aufsteckrate.

These Task is solved by a device with the features of claim 1. Preferred developments of the inven tion are the subject the dependent claims. Further features of the present invention are defined in the following description.

The Device according to the invention is for plugging from valve bags to one or more filling nozzles provided a packing machine. The inventive Device comprises at least one plug-on, on which a pivotable gripper device and a Aufsteckeinrichtung provided are. In this case, the gripper device is provided and suitable for a valve bag arranged on a receiving surface of a tray table Sack bundle to achieve in a first pivot position and receive and in a second pivot position to a slip-on to hand over. The slip-on is in turn to provided and suitable to open the valve of a valve bag and to accelerate the valve bag for attachment. The slip-on device consists according to the invention of at least two slip-on parts, of which at least one slip-on z. B. arranged pivotally is, while the other Aufsteckteil not pivot or can also be provided pivotably. According to the invention a common drive for the pivoting of the gripper device and for the pivoting of the pivotable Aufsteckteils intended. For this purpose, the gripper device with the pivotable Plug-in part mechanically coupled via a coupling mechanism.

The invention has many advantages. It is particularly advantageous that only a common drive for pivoting with the gripper device and for pivoting the individual parts or components of the slip-on is needed because the individual components are connected via a coupling mechanism. The positively controlled mechanical coupling of the gripper device and the pivotable parts of the slip-on always leads to a precisely defined spatial position the different parts to each other, so that a collision of the individual parts with each other is not possible in principle. This eliminates a significant amount of time, which must be considered in conventional solutions, since no safety times between the individual movements must be observed. Rather, different movements can be started simultaneously in a coordinated manner.

Preferably is the Aufsteckeinrichtung in the longitudinal direction opposite the gripper device arranged adjustable to different Sack dimensions can be compensated when plugging.

In preferred embodiments of the invention comprises the coupling mechanism a toggle. This is advantageous because a toggle is a transmission one at one end fast movement into one at the other end initially slow movement and vice versa allowed.

In Another preferred embodiment of the invention uses the Knee lever on a slide bar and is in a longitudinal direction slidably attached.

Preferably has the coupling mechanism for the motion-coupled pivoting of Gripper device and the pivotable Aufsteckteils two together Connected toggle to increase the effect even more.

Thereby exactly matched motions are made possible, so that a very high operating speed can be achieved. simultaneously is a significant technical by the use of only one drive and saved money.

In preferred developments is the slip-along along the sliding bar slidably disposed so that in stationary gripper device a portable Aufsteckeinrichtung allows will compensate for different bag dimensions during processing to be able to.

Especially has the slip-on two pivotable Aufsteckteile on and consists of a total of the two pivotable Aufsteckteilen together. In this case, a plug-on part in particular has an opening element an opening device on to the bag valve of a open bag to be staked. Furthermore, the slip-on device or each plug-on part has an element of the acceleration device on, so when pivoting the two pivotable Aufsteckteile in each case an opening element and an acceleration element is pivoted.

In Further developments is a and in particular exactly a Aufsteckteil around the slide bar or rotatably connected rotary bar pivotally provided. Furthermore, it is possible that also the gripper device for rotation with the slide bar connected rotary rod is pivotally provided.

In In all embodiments, the gripper device preferably comprises a Saugerleiste with several suckers, preferably depending from the bag dimensions individual suckers can be switched off, so the number of suction pads acted upon by vacuum variable is.

Preferably the slip-on device comprises a bag opening device, wherein the opening means preferably each one having angled sheet metal on the two Aufsteckteilen. The two Angled sheets result in the mutually pivoted position altogether an approximately rectangular and in particular even almost square cross section, with a diagonal from corner to corner horizontally and the other diagonal from corner to corner about vertically is aligned. The length is the horizontal diagonal smaller than the width of the bag valve, so that a top in the Center held bag valve when pivoting the angled Sheets automatically opens.

In particularly preferred developments comprises the slip-on device an accelerator device having a roller bar on a Aufsteckteil includes. The acceleration device preferably comprises furthermore a belt drive on the other plug-on part.

Further Advantages and applications of the present invention emerge from the embodiments below will be described with reference to the accompanying figures.

In this demonstrate:

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

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

3 a perspective view of the plug-on head of the device according to 2 in a first position;

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

5 after the plug-on head of the device 2 in a third position; and

6 after the plug-on head of the device 2 in a fourth position.

With reference to the figures will now be an embodiment of the device according to the invention 10 explained, which is designed as a slip-on and for attaching valve bags 2 on the or the filler neck of a packing machine 1 serves.

In 1 is a plant shown, which is a packing machine 1 for filling products in bags 2 , a slip-on machine 10 and a discharge belt 70 for removing the filled valve bags 2 having. The packing machine 1 is here as a rotary filling system with several filling nozzles 27 carried out on which the valve bags to be filled 2 with the slip-on machine 10 be plugged.

The packing machine 1 turns in the direction of rotation 48 while the attached valve bags 2 be filled. The ready-packed valve bags 2 be on the discharge belt 70 filed and transported away.

For example, such bags 2 with building materials, such. As cement or filled with other powdery or granular substances automatically. For example, the in 1 shown used rotating packaging machine. It is also possible to use a row packer. With rotating packing machines, the several filling nozzles 27 arranged distributed symmetrically over the circumference. In the 2 illustrated device 10 for attaching the valve bags is in a predetermined angular position of the packing machine 1 arranged.

If now a filler neck 27 the packing machine 1 is in the slip-on position, with the slip-on machine 10 an empty sack 2 with the help of the plug-on head 20 on the filler neck 27 attached.

Modern packing machines 1 with a number of eight or twelve, or even sixteen, spouts have enormous throughput capacities that allow bottling rates on the order of 1 sack per second or more. This means that about 3,000 to 5,000 bags are filled per hour, which is an enormous logistical requirement.

To automate the Aufsteckens Aufsteckautomaten are therefore known in which a blank bag magazine 30 the bags are temporarily stored for the slip-on machine.

The operator then only needs sack bundles 3 into the subjects 31 the empty bag magazine 3 Insert. The bag bundles become the storage table 7 fed automatically and from the receiving surface 6 individually lifted. Subsequently, the valve of the valve bag 2 opened and the valve bag is placed on the filler neck of the packing machine 1 shot up.

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

The in the perspective view 3 enlarged illustrated plug-on head 20 of the slip-on machine 10 includes a housing 32 for storage and arrangement of the various components.

On the case 32 is the gripper device 4 pivotally provided, which is a Saugerleiste 19 includes, in a first pivot position 8th the top valve bag 2 one of flat stacked valve bags 2 existing bag bundle 3 grasps. For this purpose, the suction bar 19 several of each other in the longitudinal direction 13 spaced suckers 33 on, which are preferably individually switched on and off, to the active length of the suction bar to the current bag width 34 adapt.

Furthermore, on the housing 32 a slip-on device 5 arranged here from two pivotable Aufsteckteilen 11 and 12 exists, which pivot each other when opening or closing.

The slip-on device 5 includes the attachment pieces 11 and 12 , Wherein each plug-on part an angled sheet metal 22 respectively. 23 a blind valve opening device 21 is provided. Furthermore, on the slip-on 11 a roll bar 25 provided and on the slip-on 12 a belt drive 26 which is used to drive and accelerate one between the roller bar 25 and the belt drive 26 arranged sack serves.

The roller bar 29 serves to guide the bag when plugging in and is opened only in case of failure. The pressure cylinder 49 pushes the roller bar 29 evenly against the belt drive 26 ,

In 3 is the plug-in head 20 shown in a position in which the suction bar 19 in the ers te pivoting position is pivoted to a new bag 2 from the bag bundle 3 withdraw. The suckers seize 33 the suction bar 19 the bag in the bag valve area. At the same time are in the position after 3 the slip-on device 5 or their attachment parts 11 and 12 shown in a pivoted, that is moved apart position. The movements of the plug-on parts 11 and 12 and the gripper device 4 with the suction strip 19 are via the coupling mechanism 15 mechanically positively coupled, so that during a movement of the gripper device 4 automatically also the slip-on device 5 emotional. The movement is via a drive 14 controlled here as a piston-cylinder unit, whereby a fast and precise movement even in dusty environments over long periods of time is possible.

The drive 14 engages here directly on the swivel arm 37 the gripper device 4 indicating the torque over the pivot axis 41 on the lever 36 transmits, in turn, about the fulcrum 42 the torque on the lever 39 and finally on the lever 40 transfers. The thus formed two toggle lever 16 and 17 control the movement of the gripper device 4 and the slip-on device 5 such that collisions are avoided while at the same time achieving substantially maximum operating speed and operational reliability. This means here that in the transfer of the in 3 position shown in the in 4 shown position, the suction bar is first pivoted at high speed up, while the closing speed of the pivotal movement of the two Aufsteckteile 11 and 12 remains almost constant over the entire pivoting process, so that the risk of a collision is reliably avoided.

At the same time, the positively controlled mechanical coupling of the two pivotable components, namely the gripper device and the slip-on device, only becomes a drive 14 required, whereby a considerable additional effort is saved.

The transmission of the pivoting movement on the gripper device 4 takes place through the lever 40 , the pivot point 46 is pivoted while a movement of the first coupling rod 44 and the second coupling rod 45 , as well as the lever 47 causes. Through the 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 during the movement, the position of the blind valve area 35 does not change to horizontal orientation.

After the transfer of the in 3 position shown in the in 4 shown position, the bag valve by the closing operation of the angled sheets 22 and 23 the bag opening device 21 Open while the bag is down between the roller bar and the belt drive 26 extends. After opening the valve, the belt drive 26 activated and the bag in the longitudinal direction 13 on a filler neck 27 a packing machine or filling system 1 shot up.

The in the 5 and 6 illustrated states of the plug-on head 20 basically correspond to those in the 3 and 4 illustrated states, but with the plug-on head 20 on the processing of narrower bags 2 is set.

To the bridged distance from the end of the slip-on 5 At the beginning of the filler neck even with narrower sacks to keep a constant and the smallest possible size, the slip-on 5 in the longitudinal direction 13 method. This results in a transfer of the in 3 shown state by longitudinal displacement in the 5 illustrated state.

At the same time, the gripper device 4 keep their position stationary, since the bearing surface 6 of the filing table 7 remains stationary. The coupling mechanism 15 allows a very comfortable and reliable operation of Aufsteckautomates 10 , because the slip-on device 5 opposite the gripper device 4 on the slide bar 18 is slidably mounted. Through the coupling mechanism 15 attached to the slide bar 18 attacks, ensures that even in the 5 shown position for narrower bags of drive 14 reliably coordinated pivoting movements of the gripper device 4 and the slip-on direction 5 causes.

In 6 is the state with closed slip-on 5 illustrated in which a blind valve of a bag, not shown, through the opening means 21 would be opened so that the bag could be shot on a filler neck.

1

packing machine

2

valve bag

3

sack bundle

4

Gripper device

5

Aufsteckeinrichtung

6

receiving surface

7

tray table

8th

1. pivotal position

9

Second pivotal position

10

Contraption, Aufsteckautomat

11

An attachment

12

An attachment

13

longitudinal direction

14

drive

15

coupling mechanism

16

toggle

17

toggle

18

sliding bar

19

sucker bar

20

Aufsteckkopf

21

Sack opener

22

angled sheet

23

angled sheet

24

accelerator

25

roller strip

26

belt drive

27

filling

28

waiting area

29

roller strip

30

Empty bag magazine

31

subject

32

casing

33

sucker

34

sack width

35

Bag valve area

36

lever

37

swivel arm

38

lever

39

lever

40

lever

41

pivot point

42

pivot point

43

pivot point

44

1. coupling rod

45

Second coupling rod

46

pivot point

47

lever

48

direction of rotation

70

Austrageband

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3525348 C2 [0002]

Claims (15)

Contraption ( 10 ) for attaching valve bags ( 2 ), in particular for attaching valve bags ( 2 ) on a filler neck ( 27 ) a packing machine ( 1 ), with at least one plug-on head ( 20 ), on which a pivotable gripper device ( 4 ) and a slip-on device ( 5 ), the gripper device ( 4 ) and is suitable, a valve bag ( 2 ) one on a receiving surface ( 6 ) of a storage table ( 7 ) arranged bag bundle ( 3 ) in a first pivot position ( 8th ) and in a second pivot position ( 9 ) to a slip-on device ( 5 ), wherein the slip-on device ( 5 ) and is suitable, the valve of a valve bag ( 2 ) and open the valve bag ( 2 ) to attach, wherein the Aufsteckeinrichtung ( 5 ) from at least two Aufsteckteilen ( 11 . 12 ), of which at least one plug-on part ( 11 ) is pivotable, characterized in that a common drive ( 14 ) for the pivoting of the gripper device ( 4 ) and the pivotable Aufsteckteils ( 11 . 12 ) is provided by the gripper device ( 4 ) and the pivotable plug-on part ( 11 . 12 ) via a coupling mechanism ( 15 ) are mechanically coupled. Contraption ( 10 ) according to claim 1, wherein the slip-on device ( 5 ) longitudinal ( 13 ) relative to the gripper device ( 4 ) is adjustably arranged to compensate for different bag dimensions, Contraption ( 10 ) according to claim 1 or 2, wherein the coupling mechanism ( 15 ) a knee lever ( 16 . 17 ). Contraption ( 10 ) according to the preceding claim, wherein the toggle lever ( 16 ) on a slide bar ( 18 ) and in the longitudinal direction ( 13 ) is slidably mounted. Contraption ( 10 ) according to one of the two preceding claims, wherein the coupling mechanism ( 15 ) for the movement-coupled pivoting of the gripper device ( 4 ) and the pivotable Aufsteckteils ( 11 . 12 ) two connected knee levers ( 16 . 17 ). Contraption ( 10 ) according to one of the preceding claims, wherein the slip-on device ( 5 ) along the slide bar ( 18 ) is displaceable. Contraption ( 10 ) according to one of the preceding claims, wherein the slip-on device ( 5 ) two pivotable Aufsteckteile ( 11 . 12 ). Contraption ( 10 ) according to one of the preceding claims, wherein a Aufsteckteil is provided pivotably about the slide bar. Contraption ( 10 ) according to one of the preceding claims, wherein the gripper device ( 4 ) is provided pivotably about the slide bar. Contraption ( 10 ) according to one of the preceding claims, wherein the gripper device ( 4 ) comprises a suction strip with several suckers. Contraption ( 10 ) according to one of the preceding claims, wherein the slip-on device ( 5 ) a bag opening device ( 21 ), each having an angled plate ( 22 . 23 ) at the two Aufsteckteilen ( 11 . 12 ) having. Contraption ( 10 ) according to one of the preceding claims, wherein the slip-on device ( 5 ) an accelerator ( 24 ) comprising a roller bar ( 25 ) on a plug-on part ( 11 ). Contraption ( 10 ) according to the preceding claim, wherein the one acceleration device ( 24 ) a belt drive ( 26 ) on the other plug-on part ( 12 ). Contraption ( 10 ) according to the preceding claim, wherein the receiving surface ( 6 ) a waiting area ( 28 ) is upstream, to which a new bag bundle is transportable, while the arranged on the receiving surface current bag bundle is processed. Filling plant ( 1 ) with at least one filler neck ( 34 ) for filling valve bags ( 2 ), comprising at least one device for attaching the valve sacks to the filler neck ( 34 ) according to one of the preceding claims.