EP1296813B1 - Method and device for producing flap cases comprising a closing accessory - Google Patents

Abstract

Hinge-lid boxes for cigarettes, comprising a box part (12) and lid (13), are frequently fitted with a closure aid for the lid (13). Said closure aid comprises interlocking elements which can be brought into engagement with one another, namely a lid inner tab (16), on the one hand, and a collar front wall (17), on the other hand. In order to ensure operativeness as soon as the pack is used, it is ensured that the closure aid is already in engagement when the pack is completed, i.e. before it is used for the first time. For this purpose, the lid (13) is partially opened after being substantially completed and is then moved into the closed position again thereby ensuring engagement of the closing elements.

Description

The invention relates to a method for producing cigarette packs of the type folding box, consisting of box part, cover and collar, wherein the lid by an interlocking organs existing Closing aid is held in the closed position, namely by interlocking a lid inner flap on the inside of a lid front wall with a Collar front wall of the collar. Furthermore, the invention relates to a device to carry out the process.

For cigarette packs of the type folding box or hinged lid is a Closing aid for the lid desirable, especially with hinged boxes with rounded or bevelled edges - round edges or Octagonal-pack.

A closing aid according to EP 0 434 962 has proved to be particularly advantageous. In this known embodiment is a on the inside of a lid front wall arranged lid inner flap designed in a special way, such that edge regions of the lid inner flap in the closed position with the Hook collar. Specifically, there is a positive engagement between Lid inner lobes and collar in the area of lateral, upright webs, the to limit a usual in the region of a collar front wall recess.

In a closing aid of the aforementioned or other, similar design with mutual hooking was found to be an entanglement after first use of the pack is not always guaranteed.

The invention is therefore based on the object to propose measures the reliable hooking the closing aid when putting the Ensure folding box.

This object is the method according to the invention characterized that in the manufacture of the package separated from each other Verhakungsorgane before the completion of the pack in a Verhakungsposition being brought, whereby that in the production of the packing from each other separate Verhakungsorgane before the completion of the pack in a Verhakungsposition be brought, the pack initially so far is completed, that a lid front wall of the closed lid without mutual engagement of Verhakungsorgane on the collar front wall is present that then the lid front wall in the opening direction of the lid is moved, such that the Verhakungsorgane, namely the inner lid lobes and the collar front wall, offset from each other and that Finally, the lid front wall is moved back into the closed position Introducing the hooking organs in the entanglement position.

The invention is based on the finding that the closing aid is often therefore does not come into effect because they are in mutual engagement with each other in the production of the package separated or are out of engagement. It then requires a certain deformation of the closing aid, to make them work. When using the inventive Procedure does not exist this risk, as the closing aid after completion of the package until use of the same already in the effective Position is held.

Advantageous is a method according to the invention, in which the package is largely is completed, namely in particular the lid, but without gluing the interconnected parts of the lid, in particular of inner and outer lid side flap. In this condition, the lid is still largely deformable, according to the invention can be partially opened and then again be closed, during the closing process, the Verhakungsorgane be engaged with each other, so in particular the lid inner lobes with the webs of the collar front wall. After that, the lid becomes completed by folding over the (outer) lid side flaps and connection with the (already folded) inner lid side lobes.

A device for carrying out the method accordingly consists of organs for opening the lid and reclosing the same, wherein Pressure elements on lid and box part for deformation of the hooking elements acting, such that during the closing process of the lid Verhakungsorgane get into engagement position.

Fig. 1

einen ausgebreiteten Zuschnitt für eine Klappschachtel mit Rundkanten,

Fig. 2

einen ausgebreiteten Zuschnitt für einen Kragen,

Fig. 3 bis Fig. 5

einen oberen, deckelseitigen Bereich einer Klappschachtel in verschiedenen Positionen,

Fig. 6

eine Vorrichtung zum Herstellen von Klappschachteln in vereinfachter Draufsicht,

Fig. 7

eine Einzelheit der Vorrichtung gemäß Fig. 6, nämlich einen Abschnitt einer Packungsbahn, in vergrößertem Maßstab,

Fig. 8

die Einzelheit gemäß Fig. 7 in Seitenansicht,

Fig. 9

ein Detail der Vorrichtung gemäß Fig. 7 und Fig. 8, bei nochmals vergrößertem Maßstab in Seitenansicht,

Fig. 10

ein anderes Organ der Vorrichtung gemäß Fig. 7 und Fig. 8 in einer Darstellung analog zu Fig. 9.

Other features of the invention will be explained in more detail with reference to the drawings. It shows:

Fig. 1

a spread blank for a folding box with round edges,

Fig. 2

a spread blank for a collar,

FIG. 3 to FIG. 5

an upper, lid-side area of a folding box in different positions,

Fig. 6

a device for producing folding boxes in a simplified plan view,

Fig. 7

6 shows a detail of the apparatus according to FIG. 6, namely a section of a package web, on an enlarged scale,

Fig. 8

the detail of FIG. 7 in side view,

Fig. 9

a detail of the device according to FIG. 7 and FIG. 8, in a further enlarged scale in side view,

Fig. 10

another organ of the device according to FIG. 7 and FIG. 8 in a representation analogous to FIG. 9.

The drawings are concerned with a preferred embodiment of a (cigarette) package 10 of the type Hinge-Lid. The package 10 consists of a blank 11 of thin cardboard, which forms a (lower) box part 12 and a lid 13. Furthermore belongs to this type of a pack 10, a collar 14 of a separate Blank, also made of thin cardboard. The pack 10 is rounded, upright Pack edge 15 is formed, is therefore a round edge packing. The cut 11 and the package made thereof are otherwise in accordance with the EP 0 434 962.

This also applies to a closing aid, so a device on the pack 10, the Closed position of the lid 13 guaranteed. The closing aid consists of hooking organs on the cover 13 on the one hand and on the box part 12 and on the collar 14 on the other. In the closed position these Verhakungsorgane come through the closing process the lid 13 engage with each other and thus ensure an exact closed position.

In the present embodiment are - as in EP 0 434 062 - a lid inner tabs 16 on the one hand and the collar 14 and its collar front wall 17 on the other the hooking organs. The lid inner tab 16 is located by folding at the Inside a lid front wall 22 and is connected to this by gluing. In the region of Seitenrändem 18, the lid inner tab 16 has a recess 19th or punched on. The two recesses interact with a predetermined, usual contour of the collar front wall 17. Through a central recess 20 arise lateral webs 21 with upwardly diverging edges. With these act the both side edges 18 of the lid inner flap 16 together, such that a free or upper region of the webs 21 under the lateral region of the lid inner flap 16 passes and is fixed as clamping or hooking. One through the recess 19 limited clamping tab 46 on the edge of the lid inner flap 16 is placed on the Inside of the respective web 21 on. The glue areas for fixing the lid inner flap 16 are positioned so that the area of the side edges 18 remains free and allows the hooking engagement with the collar 14. Before introducing the blank 11 in the folding turret 23 or in the area thereof, the closing aid is preformed, by erecting the clamping plate 46 in an inclined position, so that the process the threading with the collar or the webs 21 is facilitated.

In the production of the package 10, the procedure is such that the blank 11 in one Folding turret 23 is partially folded and filled by feeding a cigarette block 24 as package contents. With this cigarette block 24 of the U-shaped folded collar 14 in the radial direction in the folding turret 23 or in a pre-folded blank 11. Thereafter, the lid or the front part of the same on the cigarette block 24 and the collar 14 folded. As a result, cover inner tabs 16 and collar front wall 17 without mutual entanglement to each other or each other.

In this form, the pack 10 is pushed out of the folding turret 23 in the radial direction in a subsequent packet path 25. In the same area are last Folding steps performed, namely horizontally sideways side tabs 26 and Cover side flap 27 folded over to form side walls of the package 10. The Side tabs 26 and lid side tabs 27 are provided with glue prior to folding.

It is now a question of completing the manufacturing or folding process for the package 10, that in the finished package, the Verhakungsorgane the closing aid in engagement are, so the webs 21 of the collar 14 and the clamping tabs 46 of the lid inner flap 16. The procedure is that the completely or partially completed package 10 by appropriate displacement of the lid 13 and the cover front wall 22nd again slightly open and by moving into the closed position the engagement of Verhakungsorgane is reached.

Fig. 3 shows in a longitudinal or vertical section through the pack in the region of Lids 13 the initial state when lid inner lobes 16 and collar front wall 17 abut each other without mutual attack, after leaving the Folding turret 23. The lid 13 is then while maintaining the attachment to the collar 14 shifted in the opening direction (Fig. 4). This results in a slight change in angle between the lid front wall 22 and adjoining end wall 28. This Deformation is possible because the outer lid side tabs 27 are not yet internal Lid side tabs 29 are connected.

In the position shown in FIG. 4 is due to the displacement of the lid front wall 22 a free area of the side edge 18, namely up to the recess 19, outside the region of the collar 14 or outside the recess 20 in the area the collar front wall 17 (Figure 4). In this position, an effect comes to advantage, the by restoring forces in the packaging material, namely in the lid inner tab 16 is formed. By the folding process of the lid inner flap 16 are still restoring forces in this effective, the easy uprighting of a lateral portion of the lid inner flap Cause 16, namely in the area of the clamping plate 46th Will Now shown in FIG. 5, the lid pushed back into the closed position, resulting automatically engaging the lid inner flap 16 with the collar front wall 17, namely the webs 21, as shown in EP 0 434 962. The Pack 10 can now be completed.

In the area of the package track 25, organs are attached which are used during the (continuous) Transports of the largely finished packages 10 described Take measures. In the present example, two workstations are 30 and 31 formed. In the first workstation 30, a position of the lid 13 according to Fig. 4 produced. In the subsequent workstation 31, the lid 13 in the recirculated packunggerechte position, according to FIG. 5.

In the workstation 30 conveyor organs come into effect, the sideways, So cover exposed side flap 27 detect and relatively in the conveying direction move on, so with a movement speed that is higher than the conveying speed of the packs 10. This results in the relative displacement shown in Fig. 4. On each side of the packs 10 are for this purpose upper and lower Arranged conveyor rollers. A lower conveyor roller is designed as a segment disc 32 with a radially projecting segment 33. This comes due to appropriate Control of the movements on the underside of the lid side flap 27 to the plant. With the segment disc 32, a counter-roller 34 cooperates. This is above the Movement path of the lid side tabs 27 positioned. Counter roll 34 and segment 33 briefly capture the lid side tabs 27 and move it due corresponding rotational speeds in the conveying direction.

The workstation 31 positioned at a distance from the workstation 30 consists of several organs. These transmit a pushing or pushing action on the lid 13, such that it enters the position shown in FIG. The institutions concerned are positioned in the central region of the pack 10, ie in the region of the lid front wall 22 (Fig. 7).

A first pressure element in the conveying direction consists of two spaced apart, rotatably driven discs 35. These are on the perimeter with each a pressure segment 36 provided, which due to controlled movement plant the upwardly directed outside of the lid front wall 22 and - indirectly - the Collar front wall 17 receives. The two discs 35 are in a smaller axial Spaced apart, such that the pressure segments 36 in a middle Area of the collar front wall 17 act. This results in a slight upright lateral areas of the collar front wall 17 with the webs 21. In this way the webs 21 are brought into a favorable position for the threading of the closing aid.

As another organ, a pressure lever 37 is provided. This organ causes the shift the lid 13 in its packunggerechte position. The pressure lever 37 is mounted on a transverse shaft 38, parallel to the shaft for the discs 35. Auf the shaft are arranged two axially spaced pressure lever 37. Due to controlled Retativbewegung receive the pressure lever with a rounded Projection 39 system on the end wall 28 of the lid 13 and at an intermediate Cover front wall 22 and end wall 28 formed edge 40. By the tangsamere Movement of the pressure lever 37 and the projection 39 in the conveying direction of the Packs 10, the closing movement of the lid 13 while threading caused by lid inner tab 16 and collar front wall 17 in the Verhakungsstellung.

On the shaft 38 arranged further rollers or discs, namely two pressure discs 41, cause during the further movement of the packs holding down the Cover 13 and the lid front wall 22 while maintaining the Verhakungsstellung.

The pressure discs 41 are in the area of a glue unit 42 for gluing after arranged below sides of side tabs 26 and lid side tabs 27. The glue unit 42 has formed in a known manner glue discs 43, the positioned below the path of movement of the side flaps 26 and lid side flaps 27 are and glue transferred to these folding flaps.

The discs 35 on the one hand and the pressure discs 41 on the other hand are positioned that the latter have a greater distance from each other than the discs 35 and these partially enter the area between the pressure discs 41. The pressure levers 37 are outside of the pressure plates 41st

Following this station, the side flaps 26 and lid side flaps 27 folded in the usual way. The pack 10 is thus completed, with the organs the closing aid in the engaged position.

As shown, all organs of the two workstations 30, 31 by a common Gear 44 moves. The organs of workstation 30 are from the workstation 31 driven out via a belt 45. It is envisaged that the segment disc 32 is driven, the counter-roller 34 but runs along empty.

LIST OF REFERENCE NUMBERS

10

pack

11

cut

12

box part

13

cover

14

collar

15

pack edge

16

Lid inner tab

17

Collar front wall

18

margin

19

recess

20

deepening

21

web

22

Lid front wall

23

folding turret

24

cigarette block

25

packing sheet

26

side tabs

27

Lid side tabs

28

end wall

29

Lid side tabs

30

workstation

31

workstation

32

segment disc

33

segment

34

counter-roller

35

disc

36

pressure segment

37

pressure lever

38

wave

39

head Start

40

edge

41

thrust washer

42

glue assembly

43

Leimscheibe

44

transmission

45

belt

46

clamping plate

Claims (11)

1. Method for producing cigarette packs (10) of the hinge-lid box type, comprising a box part (12), lid (13) and collar (14), the lid (13) being retained in the closed position by a closure aid comprising interlocking elements, namely by a lid inner tab (16) on the inside of a lid front wall (22) intermeshing with a front wall (17) of the collar (14), characterized in that the interlocking elements, which are separated from one another during manufacturing of the pack (10), are brought into an interlocking position before the pack (10) is completed, the pack (10) initially being completed to the extent that a lid front wall (22) of the closed lid (13) bears against the collar front wall (17) without alternate engagement of the interlocking elements, in that then the lid front wall (22) is displaced in the opening direction of the lid (13) in such a manner that the interlocking elements, namely the lid inner tab (16) and the collar front wall (17), are situated offset with respect to one another, and in that finally the lid front wall (22) is displaced back into the closed position with the interlocking elements. being introduced into the interlocking position.
2. Device according to Claim 1, characterized in that, in the case of a closure aid having recesses (19) in the region of side borders (18) of the lid inner tab (16), as interlocking element on the lid, and having a web (21) for bounding a depression (20) of the collar front wall (17), as interlocking element on the collar, the lid front wall (20) having lid inner tabs (16) is displaced relative to the collar front wall to such an extent that the recesses (19) are situated offset with respect to the webs (21), and in that, for production of the interlocking position, the lid front wall (22) is displaced back into the starting position with the webs (21) being introduced into the associated recesses (19).
3. Method according to Claim 1 or 2, characterized in that, during the displacement of the lid front wall (22) into the closed position or into the interlocking position with the webs (21) of the collar (14), pressure is exerted at least temporarily on the lid front wall (22) in the region of the interlocking elements.
4. Method according to Claim 1 or one of the further claims, characterized in that the displacement of the lid front wall (22) into the one position and the other position takes place before lid side tabs (27, 29) are connected to one another by bonding.
5. Device for producing cigarette packs (10) of the hinge-lid box type, comprising a box part (12), lid (13) and collar (14), the lid (13) being retained in the closed position by a closure aid comprising interlocking elements, namely by a lid inner tab (16) on the inside of a lid front wall (22) intermeshing with a collar front wall (17), characterized by the following features:

   a) a pack conveyor path (25) along which. the pack (10), which is largely completed by folding of a blank (11), can be transported,

   b) an element is positioned above the pack conveyor path (25), which element causes a displacement of the lid front wall (22) relative to the collar front wall (17) in the direction of an opening position of the lid (13) and then an opposed displacement of the lid front wall (22) into the starting or closed position.
6. Device according to Claim 5, characterized in that the - largely completed - packs (10) can be transported in the region of the pack conveyor path (25) with the lid front wall facing the free side, in particular directed upwards, and with the outer lid side tabs (27) directed laterally in the plane of said lid front wall, and in that by means of actuating elements arranged above the path of movement of the pack (10) the lid front wall (22) can first of all be moved back from the box part (12) and can then be pushed back into the closed position.
7. Device according to Claim 5 or 6, characterized in that elements for displacing the lid front wall (22) in the conveying direction, namely, in particular, a segmental wheel (32) and a mating roller (34), are arranged above the path of movement of the packs (10) in a first working station (30) in the transportation direction of the packs (10), the elements being active in each case in the region of the laterally directed, outer lid side tabs (27) and grasping the latter.
8. Device according to Claim 7, characterized in that the lid side tabs (27) are grasped between the segmental wheel (32) or a segment (33) thereof, on the one hand, and a mating roller (34) preferably arranged above the path of movement, on the other hand, the segmental wheel (32) and mating roller (34) being moveable, namely rotatable, in the conveying direction relative to the pack (10).
9. Device according to Claim 7 or one of the further claims, characterized in that a push element is arranged in the region of the second working station (31) for the purpose of moving the lid (13) and the lid front wall (22) back into the closed position, namely, in particular, a pressure lever (37) which revolves in a rotating manner and, by means of a projection (39), obtains contact against the lid (13), preferably against an edge (40) formed between the lid front wall (22) and end wall (28).
10. Device according to Claim 7 or one of the further claims, characterized in that during the return movement of the lid front wall (22) into the closed position, pressure can be exerted at least temporarily on the lid front wall (22) in the region of the interlocking element - border regions of the lid inner tab (16) - preferably by two wheels (35) which are arranged at a transversely directed distance from each other and have pressure segments (36).
11. Device according to Claim 9 or one of the further claims, characterized in that during the return movement of the lid front wall (22) into the closed position, pressure can be exerted continuously or for most of the time on the lid front wall (22) in the region of the pressure lever (37), preferably by means of the rotatingly driven pressure wheels (41) mounted on the same axis as the pressure lever (37).

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