EP1000863A1 - Packaging machine with maintenance device for gluing nozzles - Google Patents

Abstract

The packing machine has glue jets (14) to apply glue to the packs (10). The jets can be moved to the servicing position by a turning arm (18). In this position, the jets are alternately located over a catching container (24) for portions of glue, and a water container (25). The water container has a rotating roller (22) of elastic foam material serving as a cleaning and closing unit for the glue jets.

Description

The invention relates to a packaging machine, in particular for the production of cigarette packs, with at least one Glue unit with glue nozzles for applying glue Cut the packs.

Connections are used in all areas of packaging technology used by folding rag glue. This applies in particular to the manufacture of cigarette packs. Glue aggregates are increasing used with glue nozzles for applying glue (points). An example of applying glue to blanks EP 835 810 discloses soft cup packs of this type with glue nozzles can also in other, neighboring technical areas are used, for example in the manufacture of the cigarettes.

One problem is the fault-free operational readiness of the glue nozzles over an extended timespan. The causes lie above all in the properties of the glue, which is relatively short-term hardens. This leads above all to business interruptions to undesirable closures of the glue nozzles.

The invention has for its object the reliable operation to improve glue aggregates with glue nozzles, namely a longer, trouble-free operation of such glue units to ensure.

To solve this problem, the glue nozzle is a relative to this movable elastic closure and cleaning member assigned, in particular a rotatable roller, disc or the like made of elastic material.

The locking and cleaning element has a double function fulfill. On the one hand, during a business interruption by the cleaning movement, namely in particular by a rotating rotation, the glue nozzle cleaned. On the other hand, it works the organ as a sealing closure means of the nozzle mouth, so that the glue nozzle immediately when starting up again is functional.

The closure and cleaning organ is after another Feature of the invention a supply of solvent for glue, in particular, assigned water, the closure and cleaning member immersed in the solvent due to the movement and this (constantly) the glue nozzle to eliminate supplies hardened glue.

The glue nozzle is preferably cleaned and sealed in a position away from the glue nozzle lying maintenance or cleaning position. A cleaning unit is positioned accordingly and the glue nozzle or the glue unit is movably mounted.

Further features of the invention relate to the configuration the glue unit or the cleaning unit and on its positioning.

Fig. 1

einen Teilbereich einer Verpackungsmaschine in stark vereinfachter Seitenansicht,

Fig. 2

eine Einzelheit der Verpackungsmaschine, nämlich ein Leimaggregat, in Seitenansicht, bei vergrößertem Maßstab,

Fig. 3

die Einzelheit gemäß Fig. 2 bei veränderter Stellung des Leimaggregats,

Fig. 4

die Einzelheit gemäß Fig. 2 und Fig. 3 bei nochmals veränderter Stellung des Leimaggregats,

Fig. 5

das Leimaggregat gemäß Fig. 2 bis Fig. 4 in einer Queransicht, teilweise geschnitten,

Fig. 6

ein Leimaggregat für einen anderen Anwendungsfall in Seitenansicht, teilweise im Vertikalschnitt,

Fig. 7

das Leimaggregat gemäß Fig. 6 in einer veränderten Betriebsstellung,

Fig. 8

das Leimaggregat gemäß Fig. 6 und Fig. 7 in Reinigungsstellung,

Fig. 9

das Leimaggregat gemäß Fig. 6 bis 8 in einer Queransicht, teilweise geschnitten, und zwar in Reinigungsposition,

Fig. 10

ein Teilbereich eines Wartungsaggregats für Leimdüsen in Draufsicht bzw. im Horizontalschnitt bei vergrößertem Maßstab,

Fig. 11

ein System für die Versorgung und Entsorgung des Wartungsaggregats mit Wasser und Leimrückständen.

Further details and features of the invention are explained in more detail below with reference to exemplary embodiments illustrated in the drawings. It shows:

Fig. 1

a partial area of a packaging machine in a greatly simplified side view,

Fig. 2

a detail of the packaging machine, namely a glue unit, in side view, on an enlarged scale,

Fig. 3

2 with the position of the glue unit changed,

Fig. 4

the detail according to FIG. 2 and FIG. 3 with the glue unit again in a different position,

Fig. 5

2 to 4 in a transverse view, partially in section,

Fig. 6

a glue unit for another application in side view, partly in vertical section,

Fig. 7

6 in a changed operating position,

Fig. 8

6 in FIG. 6 and FIG. 7 in the cleaning position,

Fig. 9

6 to 8 in a transverse view, partially in section, namely in the cleaning position,

Fig. 10

a partial area of a maintenance unit for glue nozzles in plan view or in horizontal section on an enlarged scale,

Fig. 11

a system for the supply and disposal of the maintenance unit with water and glue residues.

In the drawings is an advantageous application for the Design of glue units shown in packaging technology. It is about the production of (cigarette) packs 10 of the soft cup type. The packaging machine shown schematically in FIG. 1 consists of a folding turret 11 and a downstream drying turret 12. The folding turret 11 Cigarette groups as contents of the packs 10 through a pocket chain 13 fed. Structure and mode of operation of the packaging machine result, for example, from US Pat. No. 5,784,855.

The packaging machine has several glue units for Transfer of glue to blanks of packs 10 and 10 respectively Folding rag. The glue units are each with glue nozzles 14, 15 equipped, through the glue portions on the package 10 or Parts of the same are transmitted.

A first glue unit 16 is located in the area of the folding turret 11 and is positioned stationary on the outer circumference thereof. The glue unit 16 is used to apply glue bottom-side folding tab of the pack 10, namely on the inside an outer longitudinal tab 17 of a bottom wall of the pack 10. The processes involved in applying the glue to these longitudinal tabs 17 result from EP 835 810, for example. that a glue unit 16 each several side by side lying glue nozzles 14 to several at the same time Transfer glue points.

The glue nozzle 14 (or the nozzle unit from several side by side arranged nozzles) is between an operating position (Fig. 2) and a maintenance or cleaning or stand-by position (Fig. 3, Fig. 4) movable. For this purpose is the glue nozzle 14 mounted on an arcuate swivel arm 18, the one around a pivot bearing located away from the glue nozzle 14 19 can be pivoted, namely by a transverse Shaft journal 20 (Fig. 5), which is driven in a suitable manner becomes. In the operating position (Fig. 2) is the glue nozzle 14 directed obliquely to ensure an optimal conveying direction for to ensure the glue portions when transferred to the longitudinal tab 17.

If the operation is temporarily interrupted, the glue nozzle 14 withdrawn from the operating position by actuating the swivel arm 18 in a maintenance or cleaning position. In this The glue nozzle 14 is in the position of a position Maintenance unit 21. The glue nozzle 14 cleaned from existing residues of hardened glue.

In addition, the glue nozzle 14 is sealed until for restarting.

For this purpose, the glue nozzle 14 is a closure and cleaning element assigned. This exists in the present embodiment from a (cylindrical) roller 22 made of elastic Material such as rubber, plastic or the like. Preferably consists of the (cleaning and sealing) roll 22 an elastic foam, for example foam rubber or Foam plastic. Fine-pored polyester foam is particularly suitable with open on the cylindrical surface of the roller 22 Pores.

The roller 22 has a double function. For one thing, it does a tight seal of the glue nozzle 14 or a nozzle mouth by placing the glue nozzle 14 on the circumference of the elastic Roll 22. The relative position is chosen so that the glue nozzle or the nozzle head elastically presses into the roller 22 (Fig. 8).

On the other hand, the roller 22 is a cleaning member. By (temporary) Rotation relative to the standing glue nozzle 14 is in the area the nozzle mouth cleaned.

The roller 22 can be a solvent, for example water, carry along to the removal of hardened glue at the Glue nozzle 14 to improve. For this purpose, the (rotating driven) roller 22 with a portion of the circumference in a supply of solvent, for example in a water bath 23 on. By the structure of the roller 22, in particular by the Training as a foam, water is constantly carried along and transferred to the glue nozzle 14.

The maintenance unit 21 also enables trial operation the glue nozzles 14 by dispensing glue portions in the retracted position. Such trial portions of glue will be picked up by a collecting container.

In the present exemplary embodiment, the maintenance unit forms 21 a unit consisting of two side by side and interconnected containers, namely the collecting container 24 on the one hand and a water tank 25 on the other. The roller 22 is a cylindrical structure in the area of the water tank 25 stored, with an obliquely directed Axis of rotation. The relative position is chosen so that the glue nozzle 14 in the cleaning or closed position directed at a right angle to the outer surface of the roller 22 is.

For the rotating drive of the roller 22 is the maintenance unit 21 assigned a drive motor 26. This is with one Bracket 27 connected, which in turn on the water tank 25, namely on an upright wall of the same. The drive motor 26 is via a rotary bearing 28 with this bracket 27 connected and accordingly pivotable to the bracket 27. The drive motor is activated by an upward swiveling movement 26 moved out of the operating position, namely under Take the roll 22. This is then outside the Water tank 25 and can wear or damage be replaced. There is a segment 29 on the holder 27 attached with two locking holes 30, 31. In this one of Hand-operated locking pin 32, the working position (Fig. 5) and the position of the roller 22 outside the water tank 25 fixed.

The unit of the maintenance unit 21 is (by a linear unit 56) slidable. In the present embodiment is the glue nozzle 14 in a single cleaning and waiting position movable. On the one hand, a trial operation of the glue nozzle 14 and cleaning and sealing To ensure the same, the maintenance unit 21 is relative displaceable to the glue nozzle 14. For this purpose, the maintenance unit is at rest with slide guides 33 on guide rods 34. By shifting the maintenance unit 21, the glue nozzle 14 alternatively in the area of the collecting container 24 or Water container 25 or positioned in the region of the roller 22 (Fig. 3, Fig. 4). Overall, the maintenance unit 21 is at rest a support base 35, which is connected to the machine frame is.

Analogous to the described glue unit 16 with a maintenance unit 21 can be a glue unit, not shown, for applying Glue formed on side tabs of the package blank (EP 835 810) his.

In the case of cigarette packs, it is customary to have a sleeve 36 Apply glue. In the case of a pack 10 of the soft cup type this banderole extends across an end face of the Pack. Lateral legs of the band 36 are large Front wall and rear wall connected by adhesive.

It is known to apply glue through glue nozzles 15 to the banderoles 36 to apply (EP 0 842 856). The bands 36 are at the Glue is fed through a band conveyor 37 (suction belt) promoted in a vertical plane, namely downwards. Glue nozzles 15 are positioned at an angle - pointing obliquely downwards for transferring glue points 38. There are two glue nozzles 15 positioned side by side (Fig. 9) for the application of two rows of glue dots 38 on each banderole.

The two glue nozzles 15 are part of a glue unit 39 in the area of the drying turret 12 (Fig. 1). The glue unit 39 is positioned stationary adjacent to the drying turret 12.

The (two) glue nozzles 15 lie side by side in or on a carrier 40 positioned. The carrier 40 has a (or two) wells 41 in which the glue nozzles 15 lie. For the free side is the recess 41 with a cover 42 Sheet metal or the like provided so that the glue nozzles 15 in an enclosed chamber.

The carrier 40 is arranged on an off-center or offset Pivot bearing 43 held. The carrier is around this pivot bearing 43 40 with the glue nozzles 15 from the operating position according to FIG. 6 in a first maintenance position according to FIG. 7 with downwards Glue nozzles 15 and in a cleaning and closed position 8 movable with inclined glue nozzles 15. A drive unit 44 acts in the area of the rotary bearing 43 on a pivot of the pivot bearing 43 in a rotating sense. On arm 45 projecting transversely determines the exact position of the glue nozzles 15 in the working position according to FIG. 6, namely by System on a stop 46. This is designed as an eccentric and thus enables different stop positions by turning for adjusting the operating position of the nozzles 15.

A maintenance unit 47 is different from the exemplary embodiment 2 ff. A sump 48 and one Water tub 49 are connected to one another. The Glue unit 39 or the carrier 40 with the glue nozzles 15 - Outside the operating position (Fig. 6) - in two positions movable. In the first as shown in FIG. 7 above the drip pan 48 trial portions of glue can be dispensed by the drip pan 48 are added. In an inclined position 8, the glue nozzles 15 contact the outer surface a roller 50 made of elastic material, in particular elastic foam. The roll 50 is outside or above the water tub 49. A separate transfer roller 51 dips into the water of the water tub 49 and transmits due to rotation water on the roller 50 or the outer surface. The transfer roller 51 is with axle ends 52 in a recess 53 which is open at the top and lies opposite one another, stored upright walls of the water tub 49, can accordingly can be freely removed upwards.

The roller 50 is connected to a transverse drive motor 54. This is stored in an annular holder 55 Water tub 49 or next to the water tub. The drive motor 54 can be pulled out of the holder 55 together with the roller 50 become 50 to replace the roll.

Another special feature is the design of the maintenance unit 47 according to FIG. 6 to FIG. 10 and the system for Supply and disposal of the same.

A quantity of water 57 is constantly maintained in the collecting trough 48 receive. This takes the position in FIG. 7 dispensed portions of glue so that they do not stick to walls stick to the drip pan. The glue portions are partially dissolved, at least by the water in the drip pan 48 promoted.

For this purpose the water is constantly or from time to time Amount of water 57 supplied, namely via a water inflow 58.

To ensure a constant water circulation, connects the drip pan 48 a drain 59, which is approximately at the level of Upper level of the amount of water 57 is positioned. At the top the drip pan 48 is provided with a cover 60, which has an opening for the passage of the glue portions.

Also the part of the maintenance unit which has the rollers 50, 51 47 works with solvent or water flowing through. An inflow pipe 61 for solvent connects to the water tub 49 or water. The inflow pipe 61 opens into a horizontal Direction in the water tub 49, in the immediate vicinity Neighborhood to the transfer roller 51. The inflow pipe 61 is provided with a control element, namely a one-way flow control valve 62. With this, the inflow amount to the water tub 49 can be regulated, but without the possibility of backflow. The Inflow pipe 61 can be located below the throttle check valve 62 be designed as a hose.

The lower, bottom area of the water tub 49 is contoured. In the area of the transfer roller 51 there is a cylindrical formed to the transfer roller 51 bottom pan 63. This forms a gap with the transfer roller 51 for the water bath 23.

A closes to the bottom pan 63 within the water pan 49 Well 64. In their area there is water for withdrawal collected from the water tub 49 and discharged through an outlet 65.

The maintenance unit 47 is with regard to the flowing media - In particular with other glue units of the packaging machine - Connected to a common circulation system according to FIG. 11. The embodiment shown relates to the supply and disposal of the water basin 49.

A central reservoir 66 contains a sufficient amount of liquid or water for the supply of several or all glue units of the packaging machine. The reservoir 66, the water is pumped 67 through an extraction line 68 taken. The water passes through a filter 69 to a distribution organ, namely a divider 70 close conveyor lines 71 to the individual glue units or to the water trays 49 of the same. The conveyor lines 71 pass into the inflow pipe 61.

The outlet 65 of the water tub 49 is connected to a return line 72 connected, which leads to the reservoir 66 and in one lower area opens into this. A first part of the return line 72 leads to a collecting container 73, to which also Connect return lines 72 from other glue units. From Collecting tank 73 guides the common part of the return line 72 via a pump 74 and a filter 75 to the reservoir 66. There may be minor ones on its bottom Collect glue residues that are removed in longer periods can be.

Reference symbol list:

10th

pack

11

Folding turret

12th

Dry turret

13

Pocket chain

14

Glue nozzle

15

Glue nozzle

16

Glue aggregate

17th

Longitudinal lobes

18th

Swivel arm

19th

Pivot bearing

20th

Shaft journal

21

Maintenance unit

22

role

23

water bath

24th

Collecting container

25th

Water tank

26

Drive motor

27

bracket

28

Pivot bearing

29

segment

30th

Rest hole

31

Rest hole

32

Locking pin

33

Sliding guide

34

Guide rod

35

Support base

36

Sleeve

37

Banderole conveyor

38

Glue point

39

Glue aggregate

40

carrier

41

deepening

42

cover

43

Pivot bearing

44

Drive unit

45

poor

46

attack

47

Maintenance unit

48

Drip pan

49

Water tub

50

role

51

Transfer role

52

Axle end

53

Recess

54

Drive motor

55

bracket

56

Linear unit

57

Amount of water

58

Water inflow

59

Outflow

60

cover

61

Inflow pipe

62

One-way flow control valve

63

Floor pan

64

deepening

65

Spout

66

Storage container

67

pump

68

Sampling line

69

filter

70

Divider

71

Conveyor line

72

Return line

73

Collection container

74

pump

75

filter

Claims (11)

Packaging machine, in particular for the production of cigarette packs (10), with at least one glue unit (16, 15) having glue nozzles (16, 47) for applying glue to blanks of the packs (10), characterized in that the glue nozzle (14, 15 ) - or the glue nozzles forming a nozzle unit - is assigned an elastic closure and cleaning element which can be moved relative to the latter, in particular a rotatable roller, disc or the like made of elastic material, the closure and cleaning element being interrupted during an interruption of operation of the glue nozzle (14, 15) is delivered to seal and / or clean them. Machine according to claim 1, characterized in that during the cleaning movement the closure and cleaning member is immersed in a bath with solvent for glue, for example in water, and in that the solvent is applied to the glue nozzle (14, 15 by the cleaning movement of the closing and cleaning member ) is transferable. Machine according to claim 1 or 2, characterized in that the cleaning and closing member is a - temporarily - rotating driven roller (22, 50) made of elastic material, in particular foam, the roller (22, 50) for cleaning and / or to close the glue nozzle (14, 15) with a circumferential surface on it with elastic deformation. Machine according to Claim 1 or one of the further claims, characterized in that a maintenance unit (21, 47) is assigned to the glue unit (16, 39), the maintenance unit (21, 47) being a water tank (25) or a water pan (49 ), into which the roller (22, 50) dips with a partial area, the glue nozzle (14, 15) resting in the cleaning or closed position on the top of the roller (22, 50). Machine according to Claim 4 or one of the further claims, characterized in that the maintenance unit (21, 47) has a collecting container (24) or a collecting trough (48), preferably in connection with the water container (25) or the water trough (49 ), for taking up glue portions based on a test of the glue nozzles (14, 15). Machine according to claim 4 or one of the further claims, characterized in that the maintenance unit (21) can be displaced transversely relative to the glue nozzles (14) in the maintenance position, such that, alternatively, the water container (25) with roller (22) or the collecting container (24) is positioned below the glue nozzle (14). Machine according to Claim 4 or one of the further claims, characterized in that the glue nozzles (15), preferably with a carrier (40) for a plurality of glue nozzles (15) lying next to one another, can be moved out of the operating position of the glue nozzles (15) by pivoting movement in several maintenance positions, in particular in a (first) downward position above the collecting trough (48) and in a second position with obliquely directed glue nozzles (15) under the same on the roller (50). Machine according to claim 5 or one of the further claims, characterized in that in the collecting trough (48) for receiving glue portions during a trial operation of the glue nozzles (14, 15) has a solvent, in particular a quantity of water (57), into which the glue portions are dispensed, the amount of water (57) preferably being renewable by constant or cyclical circulation via a water inflow (58) and an outflow (59) on the collecting trough (48) with the removal of glue portions taken up. Machine according to claim 4 or one of the further claims, characterized in that the water container (25) or the water pan (49) of the maintenance unit (21, 47) can be supplied and discharged in a constant or cyclical circulation, in particular via a in the Water tub (49) flowing inlet pipe (61) and an outlet (65) from the water tub (49). Machine according to claim 9 or one of the further claims, characterized in that the water trough (49), in particular with corresponding organs of further glue units, is connected to a common, closed circulation system for liquid, in particular water, preferably with a central storage container (66) , the liquid or water can be removed via a removal line (68) and can be supplied to the water pan (49) via filters (69), the water pan (49) via the outlet (65) being withdrawn by means of a return line (72) to the reservoir (66 ) is eligible for funding. Machine according to claim 2 or one of the further claims, characterized in that the closure and cleaning member, in particular the roller (50), is mounted outside the solvent or the water bath (23) and solvent or water from the roller (50) a transfer member can be fed, preferably through a transfer roller (51) immersed in the water bath (23).

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