EP1000863B1 - Packaging machine with maintenance device for gluing nozzles - Google Patents

Description

The invention relates to a packaging machine, in particular for the production of Cigarette packs, with a glue unit having at least one glue nozzle for applying the glue on blanks of the packages, wherein the glue aggregate between one of the blanks or packs facing operating position on the one hand and a retracted maintenance or cleaning position movable and in the Maintenance or cleaning position, the nozzle closed by an elastic closure member is.

Adhesive units are known in which glue nozzles or a nozzle unit by means pivotable lever from an operating position in the range of a trajectory of Packs in a cleaning position passes through downward pivoting movement. In the area of cleaning position or during the downward movement is the Nozzle unit with the glue nozzles moved past a brush roller, the over a Downpipe is provided with a cleaning agent. In the return to the starting point or operating position, the nozzle unit is moved past the brush roller again. Furthermore, a collecting container is arranged below the brush roller for receiving intermittently emerging from the glue nozzle glue (DE 196 39 260 A1).

Known is a metering valve for adhesive, which is fixedly mounted and the one is associated with adjustable slide. This has an elastic closure piece, which consists of a silicone sponge soaked in oil or another antiblocking agent having. At this the nozzle is in the closed position of the valve.

The invention is based on the object, a packaging machine in terms of design and mode of operation of a glue unit, such that a permanent, error-free operation of the glue unit with high performance of the packaging machine and in case of business interruptions.

a) im Bereich der Wartungs- bzw. Reinigungsstellung ist ein Wartungsaggregat für das Leimaggrega positioniert,

b) das Wartungsaggregat besteht aus einem Wasserbehälter bzw. einer Wasserwanne, aus einer Rolle aus elastischem Werkstoff und aus einem Auffangbehälter bzw. einer Auffangwanne zur Aufnahme von Leimportionen,

c) das Leimaggregat ist in der Wartungs- bzw. Reinigungsstellung oberhalb des Wartungsaggregats positioniert,

d) in einer ersten Stellung des Leimaggregats befindet sich das Leimaggregat oberhalb des Wasserbehälters bzw. oberhalb der Wasserwanne, wobei die Düsen des Leimaggregats an der zeitweilig rotierend angetriebenen Rolle als Verschluss- und Reinigungsorgan anliegen,

e) die Rolle ist oberhalb des Wasserbehälters bzw. der Wasserwanne gelagert und taucht mit einem Teilbereich in ein Bad mit einem Lösungsmittel für Leim innerhalb des Wasserbehälters bzw. der Wasserwanne ein,

f) in einer zweiten Stellung im Bereich des Wartungsaggregats befindet sich das Leimaggregat oberhalb des Auffangbehälters bzw. der Auffangwanne zur Aufnahme von Leimportionen, die probeweise vom Leimaggregat vor Rückbewegung desselben in die Betriebsstellung abgegeben werden.

To solve this problem, the packaging machine according to the invention is characterized according to the preamble of claim 1 by the following features:

a) in the area of the maintenance or cleaning position, a maintenance unit for the glue aggregate is positioned,

b) the maintenance unit consists of a water tank or a water trough, of a roll of elastic material and of a collecting container or a collecting trough for receiving glue portions,

c) the glue unit is positioned in the maintenance or cleaning position above the maintenance unit,

d) in a first position of the glueing unit, the glueing unit is located above the water tank or above the water tank, the nozzles of the glueing unit resting against the temporarily rotating roller as the closing and cleaning member,

e) the roller is mounted above the water tank or the water tub and immersed with a partial area in a bath with a solvent for glue inside the water tank or the water tub,

f) in a second position in the area of the maintenance unit, the glue unit is located above the collecting container or the collecting trough for receiving Leimportionen that are submitted by the same time from the glue unit before returning the same in the operating position.

The maintenance unit arranged in the area of the maintenance or cleaning position for the glue nozzles ensures their operation. By the rotating moving role Foam in conjunction with a container with a solvent will be optimal Cleaning the glue nozzles in the maintenance or cleaning position, namely during interruptions in operation, guaranteed. Before returning the glue unit to the operating position Try a separate collection container trial Leimportionen fed.

Other features relate to the operation of the glue unit and the Training of the same in the gluing of banderoles.

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 will be explained in more detail with reference to embodiments illustrated in the drawings. It shows:

Fig. 1

a section 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

the detail according to FIG. 2 with a changed position of the glue aggregate,

Fig. 4

the detail according to FIG. 2 and FIG. 3 with a further change in the position of the glue aggregate,

Fig. 5

the glue unit according to FIG. 2 to FIG. 4 in a transverse view, partly in section,

Fig. 6

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

Fig. 7

the glue unit according to FIG. 6 in a changed operating position,

Fig. 8

the glue unit according to FIG. 6 and FIG. 7 in the cleaning position,

Fig. 9

the glueing unit according to FIGS. 6 to 8 in a transverse view, partially cut, in cleaning position,

Fig. 10

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

Fig. 11

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

In the drawings, an advantageous application for the Design of glue units in packaging technology shown. It is about the production of (cigarette) packs 10 of the type soft mug. The packaging machine shown schematically in Fig. 1 consists of a folding turret 11 and a Subordinate drying turret 12. The folding turret 11 Cigarette groups as contents of the packs 10 by a bag chain 13 supplied. Construction and operation of the packaging machine result, for example, from US 5,784,855.

The packaging machine has several glue units on Transfer of glue to blanks of the packs 10 and Folding tabs. The glue units are each with glue nozzles 14, 15 equipped, through the Leimportionen on the pack 10 or Parts of the same are transmitted.

A first glue unit 16 is located in the region of the folding turret 11 and is fixedly positioned on the outer periphery thereof. The glue unit 16 is used for applying glue bottom-side folding flaps of the pack 10, namely on the inside an outer longitudinal flap 17 of a bottom wall of the package 10. The procedures for applying the glue to this longitudinal flap 17 result from EP 835 810, for example. that a glue unit 16 each several more side by side lying glue nozzles 14 to several at the same time Transfer glue points.

The glue nozzle 14 (or the nozzle unit of 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, the glue nozzle 14 mounted on a bow-shaped pivot arm 18, which is about a lying away from the glue nozzle 14 pivot bearing 19 can be pivoted, by a transversely directed Shaft 20 (Fig. 5), which is driven in a suitable manner becomes. In the operating position (Fig. 2) is the glue nozzle 14 obliquely directed to an optimal conveying direction for to ensure the glue portions during transfer to the longitudinal tabs 17.

At temporary interruption of operation, the glue nozzle 14 retracted by operating the pivot arm 18 from the operating position in a maintenance or cleaning position. In this Position is the glue nozzle 14 in the area of a Maintenance unit 21. In this first the glue nozzle 14 cleaned from existing residues cured glue.

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

For this purpose, the glue nozzle 14 is a closing and cleaning member assigned. This consists in the present embodiment from a (cylindrical) roller 22 made of elastic Material, such as rubber, plastic or the like. Preferably the (cleaning and closing) roller 22 is made an elastic foam, for example foam rubber or Plastic foam. Particularly suitable is fine-pored polyester foam with on the cylindrical lateral surface of the roller 22 open Pores.

The roller 22 has a dual function. For one thing, it causes a tight closure of the glue nozzle 14 or a nozzle orifice by conditioning the glue nozzle 14 on the circumference of the elastic Role 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 cleaning member. By (temporary) Rotation relative to the stationary glue nozzle 14 becomes this in the range the nozzle mouth cleaned.

In this case, the roller 22, a solvent, for example water, carry along to the removal of cured glue on the Glue nozzle 14 to improve. For this purpose, the (diving driven) roller 22 with a portion of the circumference in a supply of solvent, for example in a water bath 23 one. Due to the structure of the roller 22, in particular by the Training as a foam, water is constantly carried and transferred to the glue nozzle 14.

The maintenance unit 21 also allows the trial operation the glue nozzles 14 by delivery of Leimportionen in the withdrawn position. Such sample portions of glue are taken from a container.

In the present embodiment, the maintenance unit forms 21 a unit consisting of two adjacent ones and interconnected containers, namely the collection container 24 on the one hand and a water tank 25 on the other. The roller 22 is in the form of a cylindrical structure stored the water tank 25, with an obliquely directed Axis of rotation. The relative position is chosen so that the glue nozzle 14 in the cleaning or closing position below directed at a right angle to the lateral 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 one is with one Mount 27 connected, in turn, to the water tank 25, namely on an upright wall thereof, is attached. The drive motor 26 is via a pivot bearing 28 with this bracket 27 connected and therefore pivotable to the bracket 27th By upward pivoting movement is the drive motor 26 moves out of the operating position, and under Take the role 22. This is then outside the Water tank 25 and may wear or damage be replaced. On the holder 27 is a segment 29th attached with two locking holes 30, 31. In this occurs from Hand-operated detent pin 32 a, which is the working position (Fig. 5) and the position of the roller 22 outside of the water tank 25 fixed.

The unit of the maintenance unit 21 is (by a linear unit 56) displaceable. 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 14th on the other hand, the cleaning and the closure to ensure the same, the maintenance unit 21 is relative slidable to the glue nozzle 14. For this purpose, the maintenance unit rests with sliding guides 33 on guide rods 34. By transverse displacement of the maintenance unit 21, the glue nozzle 14 alternatively in the area of the collecting container 24 or the Water tank 25 or positioned in the region of the roller 22 (Figures 3, 4). Overall, the maintenance unit 21 rests on a support base 35 which is connected to the machine frame is.

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

For cigarette packs, it is customary, a band 36 with Glue to install. In a package 10 of the type soft cup extends this banderole across a face of the Pack. Lateral legs of the band 36 are with large area Front wall and rear wall connected by gluing.

It is known, glue through glue nozzles 15 on the bands 36th to apply (EP 0 842 856). The bands 36 are at the Supply of glue through a band conveyor 37 (suction belt) in the vertical plane, namely down, promoted. Glue nozzles 15 are positioned at an angle - pointing diagonally downwards for the transfer of glue dots 38. There are two glue nozzles 15 positioned side by side (FIG. 9) for applying two rows of glue dots 38 on each band.

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

The (two) glue nozzles 15 are adjacent to each other in or on a carrier 40 positioned. The carrier 40 has a (or two) recesses 41, in which the glue nozzles 15 are located. to free side is the recess 41 with a cover 42 made Provided sheet metal or the like, so that the glue nozzles 15 in an encased chamber lie.

The carrier 40 is arranged at an off-center or offset Swivel bearing 43 held. To this pivot bearing 43 is the carrier 40 with the glue nozzles 15 from the operating position shown in FIG. 6 in a first maintenance position shown in FIG. 7 with downward Glue nozzles 15 and in a cleaning and closing position as shown in FIG. 8 with obliquely arranged glue nozzles 15 movable. In the region of the rotary bearing 43, a drive unit 44 acts on a pivot of the pivot bearing 43 in a rotating sense. One Transversely projecting arm 45 determines the exact position of the glue nozzles 15 in the working position shown in FIG. 6, by Attachment to a stop 46. This is designed as an eccentric and thus allows different stop positions by rotation for adjusting the operating position of the nozzle 15th

A maintenance unit 47 is different from the embodiment 2 ff. formed. A drip pan 48 and a Water trough 49 are connected together to form a unit. The Glue aggregate 39 and the carrier 40 with the glue nozzles 15 is - Outside the operating position (Fig. 6) - in two positions movable. In the first of FIG. 7 above the drip pan 48 can be submitted to sample Leimportionen by the drip pan 48 are received. In an inclination According to FIG. 8, the glue nozzles 15 receive contact with the lateral surface a roller 50 made of elastic material, in particular elastic foam. The roller 50 is outside or above the water trough 49. A separate transfer roller 51 dips into the water of the water tank 49 and transmits due to rotation of water on the roller 50 and its lateral surface. The transfer roller 51 is provided with axle ends 52 in FIG an open-topped recess 53 in opposite, stored upright walls of the water tank 49, therefore, can be removed freely upwards.

The roller 50 is connected to a transverse drive motor 54. This stores in an annular holder 55 of the Water tank 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 the eventual replacement of the roller 50.

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

In the drip pan 48 is a constant amount of water 57 upright receive. This takes the in the position shown in FIG. 7 given Leimportionen on, so that they are not on walls stick to the drip pan. The glue portions are partially dissolved, at least by the water in the drip tray 48 carried off.

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

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

Also, the rollers 50, 51 having part of the maintenance unit 47 works with flowing solvent or water. To the water tank 49 includes a supply pipe 61 for solvents or water. The inflow pipe 61 opens in horizontal Direction in the water tub 49, and in the immediate Neighborhood to the transfer roller 51. The inflow pipe 61 is provided with a control member, namely with a throttle check valve 62. With this, the inflow to the water trough 49 are regulated, but without Rückflussmöglichkeit. The Inflow pipe 61 may be below the throttle check valve 62nd be formed as a hose.

The lower, bottom-side region of the water trough 49 is contoured. In the area of the transfer roller 51 is a cylindrical, formed on the transfer roller 51 bottom tray 63. This forms a gap relative to the transfer roller 51 for the water bath 23.

To the bottom tray 63 includes within the water tank 49 a Well 64. In their area is water for removal collected from the water trough 49 and discharged through an outlet 65.

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

A central reservoir 66 contains a sufficient amount to liquid or water for the supply of several or all glue units of the packaging machine. The reservoir 66, the water is pumped 67 via a withdrawal line 68 taken. The water passes through a filter 69 to a distribution member, namely a divider 70. At these close feed lines 71 to the individual glue units or to the water troughs 49 of the same. The delivery lines 71 go over into the inflow pipe 61.

The outlet 65 of the water trough 49 is connected to a return line 72 connected, which leads to the reservoir 66 and in a bottom area in this opens. A first part of the return line 72 leads to a collection container 73, to the well Connect return lines 72 of other glue units. from Sump 73 performs the common part of the return line 72 via a pump 74 and a filter 75 to the reservoir 66. At its bottom may be low Glue residues accumulate, which removes in longer periods of time can be.

Claims (5)

1. Packaging machine, in particular for producing cigarette packs (10), having a glue subassembly (16, 39) which has at least one glue nozzle (14, 15) and is intended for applying glue to blanks of the packs (10), it being the case that the glue subassembly (16, 39) can be moved between, on the one hand, an operating position, in which it is directed towards the blanks of the packs (10), and, on the other hand, a drawn-back maintenance or cleaning position, and in the maintenance or cleaning position the nozzle (14, 15) is closed by an elastic closure element, characterized by the following features:

   a) a maintenance subassembly (21, 47) for the glue subassembly (16, 39) is positioned in the region of the maintenance or cleaning position,

   b) the maintenance subassembly (21, 47) comprises a water container (25) or a water basin (49), a roller (22, 50) made of elastic material, and a collecting container (24) or a collecting basin (48) for receiving glue portions,

   c) the glue subassembly (16, 39), in the maintenance or cleaning position, is positioned above the maintenance subassembly (21, 47),

   d) in a first position of the glue subassembly (16, 39), the glue subassembly (16, 39) is located above the water container (25) or above the water basin (49), the nozzle (14, 15) of the glue subassembly (16, 39) butting against the roller (22, 50), which is driven temporarily in rotation, as closure and cleaning element,

   e) the roller (22, 50) is mounted above the water container (25) or the water basin (49) and has a sub-region dipping into a bath with a solvent for glue within the water container (25) or the water basin (49),

   f) in a second position in the region of the maintenance subassembly (21, 47), the glue subassembly (16, 39) is located above the collecting container (24) or the collecting basin (48) for receiving glue portions, which are discharged on a trial basis by the glue subassembly (16, 39) before the latter moves back into the operating position.
2. Packaging machine according to Claim 1, characterized in that the glue subassembly (16, 39) with the glue nozzles (14, 15) can be moved, by a pivot arm (18), from the operating position into the region of the water container (25) or of the water basin (49) and, thereafter, into the region of the collecting container (24) or of the collecting basin (48) and back into the operating position.
3. Packaging machine according to Claim 1, characterized in that the maintenance subassembly (21) can be displaced transversely relative to the glue subassembly (16) in the maintenance position such that alternatively the water container (25) with roller (22) or the collecting container (24) is positioned beneath the glue nozzle (14) of the glue subassembly (16).
4. Packaging machine according to Claim 1, characterized by the following features:

   a) the glue subassembly (16) is fitted on a pivot arm (18),

   b) the glue subassembly (16), in the operating position, is positioned with glue nozzles (14) directed radially in relation to a folding turret (11),

   c) by virtue of the pivot arm (18) being actuated, the glue subassembly (16) can be advanced towards the maintenance subassembly (21), which is positioned in a stationary manner alongside the folding turret (11), such that the glue subassembly (16) is positioned above the roller (22), or above the collecting container (24), with the glue nozzles (14) directed essentially downwards.
5. Packaging machine according to Claim 1 or one of the further claims, for producing packs (10) with a band (36) fastened on the pack (10) by glue, characterized by the following features:

   a) the bands (36) can be transported in a vertical plane by a band conveyor (37),

   b) the glue subassembly (39) is mounted in a stationary manner adjacent to the band conveyor (37) and can be pivoted by an arm (45),

   c) in the operating position, the glue nozzles (15) are positioned obliquely downwards at an angle, adjacent to the band conveyor (37),

   d) in the maintenance or cleaning position, the glue nozzles (15) are positioned, by way of a pivoting movement, above the maintenance subassembly (21, 47).

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