DE102021117589A1 - Method and device for handling sections of a web of material - Google Patents

Abstract

The invention relates to a method and a device for handling sections (73) of a material web (20) made of packaging material, in particular within a device for producing packs (10) for products from the cigarette industry, a continuous material web (20) being transported along a conveyor line and sections (73) are severed from the material web (20) in a cutting device (21). The invention is characterized in that the sections (73) severed from the material web (20) are guided by means of compressed air into a collecting container (74) arranged adjacent to the cutting device (21).

Description

The invention relates to a method for handling sections of a material web made of packaging material, in particular within a device for producing packs for products in the cigarette industry, with a continuous material web being transported along a conveyor path and sections being cut off from the material web in a cutting device, according to the preamble of claim 1.

Furthermore, the invention relates to a corresponding device according to the preamble of claim 9.

Methods and devices of the type mentioned at the outset are known from practice in various configurations. Proceeding from this, the object of the invention is to further develop methods and devices, preferably while avoiding the disadvantages of the solutions known from the prior art, but at least to provide alternative solutions.

A method according to the invention has the features of claim 1. Accordingly, it is provided that the sections severed from the web of material are guided by means of compressed air (from the regular conveying path) into a collecting container arranged adjacent to the cutting device.

An advantage of this solution can be seen in the fact that no manual removal of the sections is required. Instead, the sections can first be collected in the collection container and then emptied when the opportunity arises. In this way it can also be achieved that the operator does not have to reach into the machine to remove the sections during setup of the device or when troubleshooting.

According to a preferred development of the invention, it can be provided that the collection container has a preferably cylindrical turbulence section, with an imaginary circulation axis directed transversely to the supply of the sections, and that the sections directed into the turbulence section by means of compressed air are circulated about the circulation axis by the compressed air.

An advantage of this solution can be that in this way an eddy current is generated in the turbulence section, in which the sections are circulated around the circulation axis. Surprisingly, it has been shown that this leads to the sections being rolled up. In addition, it is possible in this way to counteract the sections getting caught in the turbulence section.

In a preferred embodiment of the method, it can be provided that the sections in the cutting device are separated from the material web by a separating cut directed transversely to the longitudinal direction of the material web and transversely to the conveying path, and that the sections circulate around the same with their longitudinal extension essentially parallel to the circulation axis will. Relatively short blanks are thus transported transversely. Elongated blanks can also be handled, in which case the longitudinal extension points in the longitudinal direction of the conveying line, but which roll up as described above and are then transported like short blanks pointing transversely to the conveying line.

A further special feature can be that the compressed air is introduced into the turbulence section off-centre and at the edge in cross-section. In other words, it is provided that the compressed air is introduced tangentially to the eddy current.

In this case, the compressed air sweeps along the inside of the walls of the turbulence section and is conducted through the at least partially curved walls to form a turbulent flow rotating about the circulation axis.

In a preferred use of the method, it can be provided that within a device for producing packs for products in the cigarette industry, a section is separated from the web of material in accordance with a print mark applied to the web of material, in particular in a synchronization process and/or a setup process of the device .

In another preferred use of the method, it can be provided that the method is used within a device for producing packs for products in the cigarette industry in order to direct residual sections of the material web into the collection container during a synchronization process and/or during regular operation of the device.

In a further preferred use of the method, it can be provided that the method is used within a device for producing packs for products in the cigarette industry in order to separate splices of the material web from the material web and direct the corresponding section of the material web into the collection container. To detect the splice For example, an ultrasonic sensor can be used to detect the splices in the area of the splice.

Finally, in another preferred use of the method, it can be provided that the method is used within a device for producing packs for products in the cigarette industry in order to direct sections into the collection container that are to be separated out due to defects in the product to be packaged that are detected in the packaging process . Missing cigarettes in the contents of the pack, for example, can be detected as a defect in the product to be packaged using known sensors.

A device according to the invention has the features of claim 9 . Accordingly, it is provided that a collecting container for receiving the sections severed from the material web is arranged adjacent to the cutting device, and that the device is set up to direct the sections severed from the material web into the collecting container by means of compressed air.

Provision can preferably be made for the collection container to have a turbulence section that is preferably cylindrical (in cross section), with an imaginary circulation axis directed transversely to the feed of the sections, and that the sections directed into the turbulence section by means of compressed air can be circulated by the compressed air around the circulation axis.

It can preferably also be provided that the device is set up to introduce the compressed air into the turbulence section transversely to the circulation axis and that the compressed air can escape from the turbulence section in the direction of the circulation axis, in particular through corresponding openings on preferably opposite sides of the collection container.

Furthermore, it can be provided that the collecting container has a feed section arranged upstream of the turbulence section, and wherein the collecting container is arranged directly adjacent to the cutting device, so that the sections separated from the material web in the cutting device can be fed to the turbulence section by means of compressed air through the feed section.

Alternatively, the feed section can also be dispensed with and the sections severed from the material web in the cutting device can be guided directly to the collection container.

Provision can preferably be made for a compressed air nozzle to be arranged in the area of the cutting device, and for the material web or the sections severed from it to be passed between the compressed air nozzle and the collection container, so that the sections can be steered through the compressed air nozzle into the collection container, in particular in the area of a opening of the supply section facing the compressed air nozzle.

Provision can furthermore be made for the circulation axis to be directed essentially parallel to a longitudinal axis of the collecting container in the region of the turbulence section.

In a preferred embodiment of the invention, it can be provided that the collection container has a closable opening in the area of at least one side for removing sections from the collection container.

Furthermore, it can be provided that the collection container has openings in the region of opposite sides, through which the compressed air can escape from the collection container, but not the sections.

• 1 und 2 eine Vorrichtung zur Herstellung von Packungen für Produkte der Zigarettenindustrie in schematischer räumlicher Darstellung,
• 3 eine Einzelheit der Vorrichtung in vergrößerter räumlicher Darstellung im Bereich III in 1,
• 4 und 5 einen Vertikalschnitt durch die Vorrichtung entlang Schnittlinie IV - IV in 3 bei unterschiedlichen Betriebszuständen der Vorrichtung, und
• 6 einen Vertikalschnitt durch die Vorrichtung entlang Schnittlinie VI - VI in 5.

A preferred embodiment of the invention is described below with reference to the drawings. In these show:

• 1 and 2 a device for the production of packs for products of the cigarette industry in a schematic spatial representation,
• 3 a detail of the device in an enlarged spatial representation in area III in 1 ,
• 4 and 5 a vertical section through the device along section line IV - IV in 3 at different operating states of the device, and
• 6 a vertical section through the device along section line VI - VI in 5 .

1 and 2 show parts of an apparatus for making packs for products of the cigarette industry. Within the scope of the application, products of the cigarette industry are understood to mean tobacco products such as cigarettes, cigarillos and the like, but also novel tobacco products such as heat-not-burn products or liquid carriers for e-cigarettes. In the present exemplary embodiment, the device is used to produce packs 10 each with at least one cigarette group 11 as the pack contents.

Cigarettes for the cigarette group 11 are provided in a cigarette magazine 12 and ejected in a known manner with a cigarette plunger 13 from the cigarette magazine 12 and pushed into pockets 14 of an adjacent revolver 15 in order to form a cigarette group 11 in each of the pockets 14.

The cigarette groups 11 are then successively pushed out of the pockets 14 of the turret 15 with a driver 16 and transported along a driver track 17 . During the subsequent transport of the cigarette groups 11 along the driver track 17, the cigarette groups 11 are wrapped individually in an inner wrapping 18 (also called an inner liner).

The material for the inner wrapper 18 is supplied from innerliner bobbins 19, namely as a continuous web of material 20, from which individual blanks 22 are later cut off in a cutting device 21 and are wrapped around the cigarette group 11.

In the exemplary embodiment shown, two innerliner bobbins 19 are provided, from each of which a material web 20 is drawn off and fed to a splicing unit 23 . In the splicing unit 23, the ends or beginnings of the material webs 20 can be connected to one another in a known manner in order to ensure continuous operation of the device even when the bobbin is changed.

From the splicing unit 23, the web of material 20 is guided via various guides by a web guider 24 to an embossing apparatus 25, in which embossing can be applied to the web of material 20. The web guider 24 can be used to guide the material web 20, for example as an edge or center control.

The material web 20 is guided from the embossing apparatus 25 to the cutting device 21 and the blanks 22 are separated there in a known manner. The blanks 22 separated from the material web 20 in the cutting device 21 are wrapped or folded around a cigarette group 11 in a known manner, so that cigarette groups 11 wrapped in a blank 22 are provided at the end of the driver track 17 .

The cigarette groups 11 wrapped in a blank 22 are then pushed over a stage 26 into pockets 27 of a folding turret 28 , the pockets 27 of the folding turret 28 containing partially folded blanks 29 for an outer wrapper 30 . In the area of the stage 26, a blank 31 for a collar 32 is fed to the cigarette group 11 wrapped in the blank 22 beforehand.

Like the material for the inner wrapping 18 , the material for the collar 32 is supplied as a continuous web of material 33 which is drawn off from one of two collar bobbins 34 . A splicing unit 35 is also provided for the material web 33 in order to ensure uninterrupted operation of the device even when a collar bobbin 34 is changed.

The feeding of the blanks 29 for the outer casing 30 is in 2 shown. Stacks 37 with blanks 29 are fed into a blank stack feed station 36 and lifted in the area of a first linear unit 38 and fed to a cassette 39 . Before that, however, the stacks 37 are aligned by means of a stack aligner 40 . The cassette 39 is movably mounted on a second linear unit 41 so that the blanks 31 or stack 37 can be fed to a blank magazine 42 .

The blanks 29 are separated from the blank magazine 42 and transported along a blank path 43 and finally conveyed away transversely in a deflection station 44 . Via a bending station 45 for pre-bending longitudinal grooves in the blanks 29 or for pre-forming curves on blanks 29 for round-corner packs, the blanks 29 pass a coding roller 46 and embossing rollers 47 to a cold-glue station 48, in which glue is applied to the blanks 29 before they are stamped individually into a pocket 27 of the folding turret 28 by means of a slap 49 and are thereby partially erected. With the coding roller 46, the blanks 29 can be provided with an identification, for example a production code, during the continuous transport.

While circulating on the folding turret 28 , the blanks 29 are folded around the pack contents and finally discharged from the folding turret 28 and transferred to a driver track 50 . There, by means of a cap aligner 51, a lid of the pack 10 is pushed slightly forward in the transport direction in order to avoid overlapping with an adjacent front wall of the pack 10, then in two glue stations 52, 53 glue is applied to the side tabs of the blank 29 and these are fed through switches 54 applied, while the pack 10 is transported by a slide 55 on the back.

A locking turret 57 having pockets 56 is arranged following the driver track 50 . An alignment station 58 is located on the periphery of the closure turret 57. In the alignment station 58, the packs 10 pushed by the slide 55 from the driver track 50 into the pockets of the closure turret 57 are ejected aligned, namely by (slight) pressure on a bottom wall and a top wall of the pack 10 opposite the bottom wall. In addition, the locking turret 57 serves to secure the position of the glued side flaps until the glue has set.

The packs 10 are pushed off the closure turret 57 by a conveyor 59 and fed to a pack track 60 . In the area of the pack track 60 there is an ejection station 61 for defective packs 10 and a subsequent loading station 62 for packs 10 in order to be able to close any gaps in the pack flow in the pack track 60 . Following the pack track 60 running horizontally, the packs 10 are transported along a vertical pack track 63 .

3 shows the area of the cutting device 21 on an enlarged scale. The material web 20 is guided into the cutting device 21 via a plurality of deflection rollers. The web of material 20 is checked for splices in the web of material 20 between two first deflection rollers 64 , 65 . For example, one or more ultrasonic sensors 66 can be used here in order to detect splices in the material web 20 that have arisen as a result of the material webs 20 of different bobbins 19 being connected in the splicing unit 23 .

A print mark sensor 67 is provided on the second deflection roller 65 and detects the position of print marks on the material web 20 .

The material web 20 is then guided into the cutting device 21 via a third deflection roller 68 . There the material web 20 rests on the circumference of a cutting roller 69 . Furthermore, a stationary knife 70 is provided on the circumference of the cutting roller 69 . A knife shaft 71 is used to apply perforations to the material web 20 or the blanks 22, for example for a flap on the blank 22. Following the knife shaft 71, the cut blank 22 is transferred to a conveyor roller 77 and is held on it by means of vacuum. Since the construction and function of the cutting device 21 has already been described in numerous applications by the applicant and is therefore known to the person skilled in the art, a description of further details will not be given at this point.

The blanks 22 separated from the web of material 20 in the cutting device 21 are held ready below the cutting roller 69 in the driver track 17 and taken along by a cigarette group 11 and wrapped around it in a known manner.

A special feature is that a compressed air nozzle 72 is provided in order to direct sections 73 separated from the material web into a collecting container 74 if necessary.

The compressed air nozzle 72 is arranged below the cutting roller 69 in the present exemplary embodiment.

Compressed air nozzle 72 and collecting container 74 are arranged on different sides of the conveying path or the web of material 20 or the blanks 22 or sections 73 .

In addition to a turbulence section 75, the collecting container 74 also has a feed section 76. The feed section 76 faces the conveying path and has a feed opening 78 for the sections 73 near the circumference of the conveying roller 77, while an opening of the compressed air nozzle 72 is at a small distance on the other side of the conveyor line is arranged. It goes without saying that a feed section 76 can also be dispensed with, for example if the construction of the device allows the turbulence section 75 to be arranged closer to the conveying section.

Finally, a transfer nozzle 79 is also arranged below the cutting roller 69, which is used to lift blanks 22 severed from the material web 20 from the circumference of the cutting roller 69 and to facilitate transfer to the conveyor roller 77.

how 3 shows, the collection container 74 is essentially cylindrical in the area of the turbulence section 75 . Openings 81 are provided as air outlets in the walls of the collection container 74 at the front. An opening 82 is also provided on an end face 80, via which sections 73 can be removed from the turbulence section. In the present case, the end face 80 of the collection container 74 is designed as a pivotable door 83 .

1. a) wenn bei bedruckten Materialbahnen 20 die Schneidwalze 69 der Schneideinrichtung 21 noch nicht zu den Druckmarken der Materialbahn 20 synchronisiert ist, oder
2. b) wenn bei Materialbahnen 20 ein z.B. zerknitterter Bahnanfang vor Inbetriebnahme der Maschine abgeschnitten werden muss, um einen sauberen Anfangsschnitt zu erzeugen,
3. c) bei Erkennung und Beseitigung eines Abschnitts 73 der Materialbahn 20 mit einer Spleißstelle, sowie
4. d) bei Beseitigung eines Abschnitts 73 oder Zuschnitts 22 im laufenden Betrieb bei Erkennung einer fehlerhaften Formation des Packungsinhalts.

4 shows the regular operation of the device, in which blanks 22 are separated from the material web 20 and wrapped around the cigarette group 11. 5 in contrast to this, shows the ejection of a section 73 into the collection container 74. This can occur in the following cases in particular:

1. a) if, in the case of printed material webs 20, the cutting roller 69 of the cutting device 21 is not yet synchronized with the print marks of the material web 20, or
2. b) when material webs 20, for example, a crumpled beginning of the web before commissioning must be cut off by the machine to produce a clean initial cut,
3. c) upon detection and removal of a section 73 of the material web 20 with a splice, and
4. d) on-line removal of a section 73 or blank 22 upon detection of defective formation of the package contents.

• Nachdem die Materialbahn 20 vom Bediener der Vorrichtung durch die entsprechende Apparate (Prägeapparat 25, Schneideinrichtung 21) hindurchgezogen und eingefädelt wurde, bzw. die üblichen Sicherheitseinrichtungen der Vorrichtung anschließend verriegelt wurden, kann der Synchronisations- bzw. Einrichtungsvorgang (rapportgerechtes Abschneiden der Materialbahn 20) gestartet werden. Dies kann durch die Steuerung der Vorrichtung eingeleitet werden. Dabei wird die Vorrichtung vorzugsweise langsam, insbesondere manuell betrieben und von der Materialbahn 20 wird mehrfach ein Abschnitt 73 abgetrennt bis das Material rapportgerecht zur Druckmarke abgeschnitten wurde bzw. die beiden Schneidorgane der Schneideinrichtung 21 eine rapportgerechte Schnittstellung an der Materialbahn 20 erreichen.

With reference to 5 the synchronization or setup process for a printed material web 20 can take place as follows:

• After the operator of the device has pulled the material web 20 through the appropriate apparatus (embossing apparatus 25, cutting device 21) and threaded it, or the usual safety devices of the device have then been locked, the synchronization or setup process (cutting of the material web 20 in accordance with the pattern) can be started will. This can be initiated by controlling the device. The device is preferably operated slowly, in particular manually, and a section 73 is severed several times from the material web 20 until the material has been cut off in accordance with the print mark or the two cutting elements of the cutting device 21 reach a cutting position on the material web 20 in accordance with the repeat.

This can be achieved by regulating the motor slip on the cutting roller 69 . The negative pressure with which the material web 20 or the blanks 22 are held on the rollers 69, 77 during normal operation of the device is also reduced until the print marks on the material web 20 have reached an intended cutting position in the cutting device 21.

At the same time, a compressed air pulse is triggered via the compressed air nozzle 72 or compressed air is directed or directed into the supply section 76 of the collection container 74, as a result of which a turbulence about an imaginary circulation axis is generated in the turbulence section 75 of the collection container 74. Corresponding to the openings 81 in the end faces 80, the circulation axis runs transversely to the longitudinal axis of the turbulence section 75. The compressed air is introduced tangentially into the turbulence section 75 ( 5 ).

The sections 73 severed from the material web 20 are entrained by the air flow and guided into the turbulence section 75 of the collecting container 74, where they then tend to roll up due to the suction inside the turbulence section 75 or the turbulence of the air.

After the synchronization or setup process has been completed, the sections 73 remain in the collection container 74 as waste. In order to empty the collecting container 74, it has a pivotable door 83 which is arranged on an end face 80 and through which the sections 73 can be removed from the collecting container 74. For easier removal of the sections 73, the collection container 74 can be designed to be removable from the driver track.

In the case of non-printed material webs 20 that do not require synchronization with the print mark, it may be sufficient to only prepare a clean beginning of the web and therefore to eliminate a possibly crumpled beginning of the material web 20 . Here, too, the procedure is similar. The cutting device 21 is operated until the crumpled area of the material web 20 has been removed as a section 73 through the compressed air nozzle 72 into the collecting container 74 . Thereafter, the device can be used in normal operation.

Furthermore, there is a further possibility with regard to eliminating a section 73 with a splice, in which case the process can be initiated by detecting the overlapping ends of the material web 20 by means of splice/ultrasonic sensors 66 . With this option, the cigarette group 11 that is no longer wrapped must accordingly be ejected in the further process.

The ejection of a blank 20 or section 73 can also be used when the faulty formation of the cigarette group 11 is detected upstream of the cutting device 21 . In this case, too, the faulty cigarette group 11 must be ejected accordingly.

reference list

10

pack

11

cigarette group

12

cigarette magazine

13

cigarette rod

14

pocket

15

revolvers

16

driver

17

carrier track

18

inner wrapper

19

Innerliner bobbin

20

web of material (inner wrapping)

21

cutting device

22

cutting (inner wrapping)

23

splice unit (inner casing)

24

web guider

25

embossing apparatus

26

stage

27

pocket

28

folding revolver

29

cutting (outer wrapper)

30

outer casing

31

cut (collar)

32

collar

33

web of material (collar)

34

collar bobbine

35

splice unit (collar)

36

Blank stack infeed station

37

stack (cut)

38

linear unit

39

cassette (blank)

40

Stack aligner (stack)

41

linear unit

42

blank magazine (blank)

43

cutting web

44

deflection station

45

bending station

46

coding station

47

embossing rollers

48

cold glue station

49

goof

50

carrier track

51

cap aligner

52

glue station

53

glue station

54

soft

55

slider

56

pocket (bolt revolver)

57

bolt turret

58

alignment station

59

sponsor

60

packing track (horizontal)

61

ejection station

62

refill station

63

packing track (vertical)

64

pulley

65

pulley

66

ultrasonic sensor

67

Print mark sensor

68

pulley

69

cutting roller

70

knife

71

knife shaft

72

compressed air nozzle

73

section

74

collection container

75

swirl section

76

feeding section

77

conveyor roller

78

feed opening

79

transfer nozzle

80

face

81

opening (air outlet)

82

opening (door)

83

door

Claims (16)

Method for handling sections (73) of a material web (20) made of packaging material, in particular within a device for producing packs (10) for products from the cigarette industry, a continuous material web (20) being transported along a conveyor path and being cut in a cutting device (21) Sections (73) are severed from the material web (20), characterized in that the sections (73) severed from the material web (20) are guided by means of compressed air into a collecting container (74) arranged adjacent to the cutting device (21). procedure after claim 1 , characterized in that the collecting container (74) has a preferably cylindrical turbulence section (75) with an imaginary axis of circulation directed transversely to the supply of the sections (73), and that the sections directed into the turbulence section (75) by means of compressed air (73) are circulated by the compressed air around the axis of circulation. procedure after claim 1 or 2 , characterized in that the compressed air is introduced into the turbulence section (75) transversely to the circulation axis and can escape from the turbulence section (75) in the direction of the circulation axis, in particular through corresponding openings (80) on preferably opposite sides of the collection container (74). procedure after claim 3 or one of the other preceding claims, characterized in that the compressed air is introduced into the turbulence section (75) eccentrically in cross-section and at the edge. procedure after claim 1 or one of the other preceding claims, characterized in that within a device for producing packs (10) for products of the cigarette industry, a section (73) is separated from the material web (20) in accordance with a printed mark applied to the material web (20). , in particular in a synchronization process and/or a setup process of the device. procedure after claim 1 or one of the other preceding claims, characterized in that within a device for producing packs (10) for products of the cigarette industry, the method is used to cut sections (73) of the material web (20) during a synchronization process and/or during regular operation of the device into the collection container (74). procedure after claim 1 or one of the other preceding claims, characterized in that within a device for producing packs (10) for products of the cigarette industry, the method is used to separate splice points of the material web (20) from the material web (20) and the corresponding section (73) of the material web (20) into the collecting container (74). procedure after claim 1 or one of the other preceding claims, characterized in that within a device for producing packs (10) for products of the cigarette industry, the method is used to guide sections (73) into the collecting container (74) which are recognized as a result of the packaging process Faults in the product to be packaged are to be eliminated. Device for handling sections (73) of a material web (20) made of packaging material, in particular within a device for producing packs (10) for products from the cigarette industry, the device being set up to transport a continuous material web (20) along a conveyor path and cutting off sections (73) from the web of material (20) in a cutting device (21), characterized in that a collecting container (74) for receiving the sections (73) cut off from the web of material (20) is arranged adjacent to the cutting device (21). and that the device is set up to direct the sections (73) severed from the material web (20) into the collecting container (74) by means of compressed air. device after claim 9 , characterized in that the collecting container (74) has a preferably cylindrical turbulence section (75) with an imaginary axis of circulation directed transversely to the supply of the sections (73), and that the sections (73) directed into the turbulence section (75) by means of compressed air through which compressed air can be circulated around the axis of circulation. device after claim 10 , characterized in that the device is set up to introduce the compressed air into the turbulence section (75) transversely to the circulation axis and that the compressed air can escape from the turbulence section (75) in the direction of the circulation axis, in particular through corresponding openings (80) preferably opposite sides of the collecting container (74). device after claim 11 , characterized in that the collecting container (74) has a feed section (76) arranged upstream of the turbulence section (75), and wherein the collecting container (74) is arranged directly adjacent to the cutting device (21), so that the in the cutting device (21) of the sections (73) separated from the material web (20) can be fed to the turbulence section (75) by means of compressed air through the feed section (76). device after claim 9 or one of the other preceding claims, characterized in that a compressed air nozzle (72) is arranged in the area of the cutting device (21), and that the material web (20) or the sections (73) cut from it between the compressed air nozzle (72) and the collection container (74) are passed through, so that the sections (73) can be steered through the compressed air nozzle (72) into the collection container (74), in particular in the area of an opening of the supply section (76) facing the compressed air nozzle (72). device after claim 9 or one of the other preceding claims, characterized in that the axis of circulation is directed essentially parallel to a longitudinal axis of the collecting container (74) in the region of the turbulence section (75). device after claim 9 or one of the other preceding claims, characterized in that the collection container (74) has a closable opening (82) in the area of at least one side for the removal of sections (73). device after claim 9 or one of the other preceding claims, characterized in that the collection container (74) has openings (81) in the region of opposite sides, through which the compressed air can escape from the collection container (74), but not the sections (73).

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