EP2422970B1 - Folding box gluing machine - Google Patents

Description

The invention relates to a folding box gluing machine with a plurality of module-shaped processing stations for the production of folding box blanks according to the preamble of claim 1.

• Einen Einleger, der die zu verarbeitenden Zuschnitte mit hoher Geschwindigkeit aus einem Stapel nacheinander abzieht und einzeln der nachfolgenden ersten Bearbeitungsstation zuführt,
• Ein Auftragwerk für Klebstoff, üblicherweise Leim, das auf die zu verklebenden Faltlappen einen Klebstoffstreifen aufträgt und
• Eine Faltstation, in der die mit einem Klebestreifen versehenen Zuschnittteile zur Herstellung einer Klebeverbindung um 180° umgelegt, also gefaltet werden.
• Im Anschluss an die Faltstation ist üblicherweise eine sogenannte Überleitstation angeordnet, in der die Schachteln gezählt, markiert und - falls schadhaft - ausgeschleust werden können.
• Danach folgt eine Pressstation, an deren Anfang ein Schuppenstrom aus gefalteten Zuschnitten gebildet wird, der in der Pressstation für einige Zeit unter Druck gehalten wird, damit die beiden Zuschnitte an der Klebenaht verbunden werden.

Folding box gluing machines of the generic type for the production of folding boxes from folding box blanks are known to have at least the following modules as processing stations:

• A feeder, which pulls the blanks to be processed at high speed from a stack one after the other and feeds them individually to the subsequent first processing station,
• An applicator for glue, usually glue, which applies an adhesive strip to the folding flaps to be glued and
• A folding station in which the blank parts provided with an adhesive strip are folded by 180 °, ie folded, to produce an adhesive bond.
• Following the folding station usually a so-called transfer station is arranged, in which the boxes can be counted, marked and - if defective - can be discharged.
• This is followed by a pressing station, at the beginning of which a shingled flow of folded blanks is formed, which is held in the pressing station for some time under pressure, so that the two blanks are connected to the adhesive seam.

The individual processing stations have conveying means driven for transporting the folding box blanks. These consist, for example, each one arranged on the side of the machine upper and lower conveyor belt, the lower conveyor belt is guided in a roller cheek and the upper conveyor belt in a roller rail. The conveyor belts are arranged transversely adjustable and can thus be adjusted to the respective folding carton blank format. The blanks are transported printed side down between the top and bottom conveyor belts. From the DE 10 2004 022 344 A1 Such a folding box gluing machine is known.

However, there are applications in which the continuous lower conveyor belts interfere, for example, with a line scan camera, an image of the entire printed blank width should be included for inspection purposes. In order to create a gap for the camera inspection over the complete cutting width, for example, the upper conveyor belt is maintained throughout and split the lower conveyor belt. Due to the design, it is expensive to drive the rear lower conveyor belt. However, there are also applications where the upper or upper and lower conveyor belts are split.

Object of the present invention is therefore to provide transport devices that easily and safely transport across transport gaps either within a module or between two modules carton blanks.

This object is achieved by the characterizing features of claim 1.

In a preferred embodiment, the Faltschachtelklebemaschine several successively arranged processing modules for the production of cartons from Faltschachtelzuschnitten on. The processing modules each have a transport device which has at least one upper and one lower conveying device, the conveying means of which contact one another. The carton blanks are transported between these upper and lower conveyors. In order to safely bridge a gap within the module or between two modules, at least one of the upper and / or lower conveyors is formed divided and consists of at least two conveyors, which are at a distance from each other. In order to ensure safe transport of the folding box blanks across the gap, at least one of the conveyors is connected to a drive.

According to the invention, the distance between the split conveyors is variable. This is especially easy to implement

Embodiments, which have as conveyor belts, belts, rollers, suction rolls, suction plates or suction belts.

Figur 1

zeigt in einer perspektivischen Darstellung beispielhaft einzelne Bearbeitungsstationen einer Faltschachtelklebemaschine

Figur 2

zeigt die durchgehende Transportvorrichtung gemäß Stand der Technik in einer Bearbeitungsstation einer Faltschachtelklebemaschine

Figuren 3a-3e

zeigen in schematischer Darstellung erfindungsgemäße Transportvorrichtungen in Form von Riemenförderern

Figur 4

Alternative erfindungsgemäße Transportvorrichtung mit Saugband

Figuren 5a+5b

Alternative erfindungsgemäße Transportvorrichtungen mit Transportwalzen

Figuren 6a+6b

Alternative erfindungsgemäße Transportvorrichtungen mit Transportkugeln

Figur 7

Alternative erfindungsgemäße Transportvorrichtungen mit Saugwalze

Figur 8a+8b

Alternative erfindungsgemäße Transportvorrichtungen mit Saugblech

The invention will be explained with reference to various embodiments:

FIG. 1

shows in a perspective view by way of example individual processing stations a Faltschachtelklebemaschine

FIG. 2

shows the continuous transport device according to the prior art in a processing station a Faltschachtelklebemaschine

FIGS. 3a-3e

show in a schematic representation transport devices according to the invention in the form of belt conveyors

FIG. 4

Alternative transport device according to the invention with suction belt

Figures 5a + 5b

Alternative transport devices according to the invention with transport rollers

Figures 6a + 6b

Alternative transport devices according to the invention with transport balls

FIG. 7

Alternative transport devices according to the invention with suction roll

Figure 8a + 8b

Alternative transport devices according to the invention with suction plate

All Faltschachtelklebemaschinen according to the embodiments include a plurality of processing stations, which are traversed by the box blanks sequentially.

FIG. 1 shows, by way of example, individual processing stations of such a folding box gluing machine.

The folder gluer starts in FIG. 1 bottom right with an insert 1, which pulls off the blanks to be processed at high speed from a stack one after the other and feeds them individually to the subsequent processing station. Following the insert 1 is followed by an alignment station 4, in which the blanks are individually aligned against a lateral stop. Lead through the alignment station Transversely positionable machine components in the form of two pairs of belts, which serve as conveying elements and can be transversely positioned via actuators.

This is followed by a primary crusher 6 and a first folding module 7. The machine components in the form of belt pairs, which can be positioned transversely in the form of belt pairs, both through the primary shredder 6 and through the folding module 7, are conveyed transversely and positioned with an actuator depending on the type of trimming.

On the folding module 7 follows a turning station 9. The turning station 9 includes for rotating the blanks about a vertical axis by 90 ° two parallel juxtaposed conveyor lines whose speed is adjustable separately. The blanks are on both conveyor lines, so that they are rotated at different speeds of the two conveyor lines. The two conveyor lines contain driven rollers as conveying elements.

Subsequent to the turning station 9 is followed by a further alignment station 10, which corresponds in its construction of the alignment station behind the insert 1. It thus again contains transversely positionable machine components in the form of pairs of conveyor belts as conveying elements.

The next processing station 13 serves to perform box-type dependent processing operations; For example, further score lines are pre-broken or special folds are performed. Also through the processing station 13 lead belt pairs as conveying elements that can be positioned transversely with actuators.

This is followed by a folding station 14, in which the blank parts previously provided with an adhesive seam are folded over by 180 °. The folding station 14 includes pairs of belts as conveying elements and an adhesive applicator, which can be moved by means of actuators in their dependent of the cutting type transverse position. Then follows a transfer station 15, of which the folded, provided with not yet set adhesive seam blanks in all parts exactly aligned the subsequent collection and Pressing device 16 are supplied. In the collecting and pressing device 16, a shingled stream of folded blanks is first formed, which is subsequently held under pressure for some time between conveying press belts, so that the adhesive seams set. The transfer station also contains pairs of belts, which can be transversely adjusted by means of actuators.

FIG. 2 shows by way of example a transport device 8, each with a left and right upper conveyor 3, 3 'and in each case a left and right lower conveyor 2, 2', in the present example as a belt conveyor with corresponding conveyor belts as conveying means 5, 5 ', 12, 12' is trained. The conveyors 3, 3 ', 2, 2' are mounted on round trusses 11, so that they can be adjusted to the respective box cutting width.

In the following schematic illustrations, for better clarity, only one upper and one lower conveyor is shown.

The FIGS. 3a to 3e show various transport devices 20 according to the invention in the form of belt conveyors. In FIG. 3a a possibility is shown, a carton blank 24 safely across a gap with the distance width b between two lower conveyors 22, 22 'to transport. The transport 20 according to the invention consists of an upper conveyor 21, which has a conveyor belt 23, which is guided around deflection rollers 26 as conveying means. As a lower conveyor, the transport has a first lower conveyor 22 seen in the conveying direction 25 and with a distance width b to this second lower conveyor 22 '. Both lower conveyors 22, 22 'also have conveyor belts 23, which are guided around deflection rollers 26. The conveying means 23 of the upper and lower conveyors 21, 22, 22 'touch each other and clamp the carton blank to be transported between them. The upper conveyor is in a known manner in a roller rail 29 and the lower conveyor means are mounted in roller cheeks 28.

The seen in the conveying direction 25 second guide roller 26, seen in the conveying direction 25, first lower conveyor 22 is connected to a drive not shown and thus serves as a drive roller 27 for the conveyor 23 of the lower conveyor 22. By rotation of the drive roller 27 counterclockwise the conveyor 23 of the lower conveyor 22 is also set in motion counterclockwise. Since the upper run of the conveyor 23 of the lower conveyor 22 contacts the lower run of the conveyor 23 of the upper conveyor 21, the conveyor 23 of the upper conveyor 21 is set in motion clockwise due to the friction between the two conveyors 23. Similarly, due to the friction between the conveying means 23 of the upper conveyor 21 and the second lower conveyor 22 'seen in the conveying direction, the conveyor 23 of the second lower conveyor 22' is set in motion counterclockwise. A folded between the conveyor 23 carton blank is transported in the conveying direction 25 in this manner.

In FIG. 3b an alternative transport device 20 is shown. In contrast to the transport device 20 of the FIG. 3a is in the transport device according to FIG. 3b seen in the conveying direction 25 second guide pulley 26 of the second lower conveyor 22 seen in the conveying direction 25 'connected to a drive not shown and thus serves as a drive roller 27. By the drive roller 27 is thus the conveyor 23 seen in the conveying direction 25 second lower conveyor 22nd 'driven. By means of the friction, the conveying means 23 of the upper conveying device 21 is thereby driven and, in turn, via the friction, the conveying means 23 of the lower conveying device 22 seen in the conveying direction 25.

In Figure 3c another alternative transport device 20 is shown. In this embodiment, as seen in the conveying direction 25 second guide roller 26 of the upper conveyor 21 is provided as a drive roller. The drive of the lower conveyors 22, 22 'takes place via friction of the contacting conveying means 23.

In 3d figure another alternative transport device 20 is shown. In this embodiment, seen in the conveying direction 25 second guide roller 26 of the As seen in the conveying direction 25 second deflection roller 26 seen in the conveying direction 25 second lower conveyor 22 'as a drive roller 27 is provided. The drive of the upper conveyor 21 via friction of the touching conveyor 23rd

In FIG. 3e another alternative transport device 20 is shown. In this embodiment, both the upper conveyor 21 and the two lower conveyors 22, 22 'are each driven by a drive roller 27.

The transport devices 20 according to the invention according to FIGS. 3a to 3e provide a cost-effective and secure way to transport folding box blanks over gaps within a module, the gaps, as needed, can be different sizes.

The transport devices shown are not to be considered as exhaustive. There are also other alternatives possible. In addition, these drive concepts can not only be used to bridge gaps within a module. It is also possible to use these drive concepts to bridge gaps between two modules.

In the in the FIGS. 3a to 3e illustrated embodiments, the conveyor 23 are designed as conveyor belts or conveyor belts.

In the FIG. 4 For this purpose, an alternative option is shown. In the illustrated transport device 20, the conveying means 23 for the upper conveyor 21 is designed as a suction belt. The box blank is sucked via the suction box 31, which is connected to a suction air connection 30, via the holes 32 in the suction belt. The transport is then carried out as in the previous embodiments in that at least one of the deflection rollers 26 of the upper conveyor 21 or the two lower conveyors 22, 22 'is connected to a drive.

In the FIGS. 5a and 5b Two further alternative embodiments are shown. In FIG. 5a the two lower conveyors 22 and 22 'with rollers 33 are designed as a conveyor and the upper conveyor 21 as a belt conveyor with seen in the conveying direction 25 second guide roller 26 as a driven pulley. In the FIG. 5b it is the other way around. The upper conveyor 21 is designed with rollers 33 as a conveyor and the lower conveyor means 22, 22 'each as a driven belt conveyor.

In the Figures 6a and 6b Two further alternative embodiments are shown. In contrast to the versions according to the FIGS. 5a and 5b the rollers 33 are formed as balls 36 which are mounted in a ball bar, not shown.

In the FIG. 7 a further alternative embodiment is shown. In this embodiment, the transport device 20 has two driven lower conveyors 22, 22 '. The upper conveyor 21 consists of rollers 33 and a suction roller 34 with a fixed suction head 35. The rotating suction roller 34 is located above the gap with the distance b between the two lower conveyors 22, 22 '. In the hollow chamber of the suction roll 34 there is a suction head 35, which sucks the folding box blanks 24. The suction area inside the roller is restricted in the lower area, whereby the blank is released again when leaving the gap. Analogous to the variants of FIGS. 5b and 6b can also in the embodiment according to FIG. 7 the rollers 33 are replaced by balls 36. Furthermore, the upper conveyors could be formed before and after the suction roll 34 as a conveyor belt 23 with guide rollers 26.

In the FIGS. 8a and 8b a further alternative embodiment is shown. In the illustrated transport device 20, the conveying means 23 for the upper conveyor 21 is designed as a conveyor belt. The conveyor 23 is guided in such a way around pulleys 26 and 40 that a gap for a suction box 31 is formed. The box blank 24 is sucked via the suction box 31, which is connected to a suction air connection 30, via holes 38 in a suction plate 37, which is designed, for example, as a rigid suction plate.

The transport device 20 also has two lower conveyors 22, 22 'which are guided around deflection rollers 26. The transport of the carton blanks 24 then takes place, as already described in previous embodiments, in that at least one of the deflecting rollers 26 of the upper conveyor 21 or of the two lower conveyors 22, 22 'is connected to a drive. So that the carton blanks 24 can be transported under the suction box 31 without interference, this advantageously has an enema aid 39.

In this embodiment, a gap has thus been created for the suction box in the upper area and a gap in the lower area for, for example, a line scan camera or a machining tool.

LIST OF REFERENCE NUMBERS

1

depositors

2, 2 '

lower conveyor

3,3 '

upper conveyor

4

aligner

5, 5 '

funding

6

primary crusher

7

folding module

8th

transport device

9

turning station

10

aligner

11

around Traverse

12, 12 '

funding

13

processing station

14

folding station

15

transfer station

16

Collecting and pressing device

20

transport device

21

upper conveyor

22, 22 '

lower conveyor

23

funding

24

folding box

25

conveying direction

26

guide rollers

27

driven pulley

28

roller cheek

29

roll bar

30

suction air

31

suction box

32

Holes in the suction belt

33

roll

34

suction roll

35

suction head

36

Bullet

37

rigid suction plate

38

Holes in the suction plate

39

running-in aid

40

idler pulley

b

Gap width

Claims (7)

1. Folder gluer including several processing modules arranged in series for producing folding boxes out of folding box blanks, each processing module including a transport device that has at least one upper and one lower conveying device including conveying means that contact each other for transporting the box blanks, which are transported in a conveying direction between the upper and lower conveying devices,
   characterized in
   that the lower conveying device is divided and consists of at least two conveying devices that are at a distance to each other in the conveying direction, wherein the distance between the divided conveying devices in the conveying direction is modifiable and wherein at least one of said conveying devices is connected to a drive.
2. Folder gluer according to Claim 1,
   characterized in
   that the conveying means of the conveying devices are embodied as transport belts or tapes and/or suction belts and/or a suction plate and/or rollers and/or balls and/or suction rollers.
3. Folder gluer according to one of Claims 1 to 2,
   characterized in
   that the second deflection roller (26) as viewed in the conveying direction (25) of the first lower conveying device (22) as viewed in the conveying direction (25) is connected to a drive and is thus used as a drive roller (27) for the conveying means (23) of the lower conveying device (22)
4. Folder gluer according to one of Claims 1 to 2,
   characterized in
   that the second deflection roller (26) as viewed in the conveying direction (25) of the second lower conveying device (22') as viewed in the conveying direction (25) is connected to a drive and is thus used as a drive roller (27) for the conveying means (23) of the lower conveying device (22').
5. Folder gluer according to one of Claims 1 to 2,
   characterized in
   that the second deflection roller (26) as viewed in the conveying direction (25) of the upper conveying device (21) is connected to a drive and is thus used as a drive roller (27) for the conveying means (23) of the upper conveying device (21).
6. Folder gluer according to one of Claims 1 to 3,
   characterized in
   that the second deflection rollers (26) as viewed in the conveying direction (25) of the two lower conveying devices (22, 22') are connected to a drive and are thus used as drive rollers (27) for the conveying means (23) of the lower conveying devices (22, 22').
7. Folder gluer according to one of Claims 1 to 3,
   characterized in
   that the first deflection roller (26) as viewed in the conveying direction (25) of the first conveying devices (22) as viewed in the conveying direction (25) and the second deflection rollers (26) as viewed in the conveying direction (25) of the upper conveying device (21) and of the second conveying device (22') as viewed in the conveying direction (25) are connected to a drive and are thus used as drive rollers (27) for the conveying means (23) of the lower conveying devices (22, 22') and of the upper conveying device (21).

Images