WO2010149268A1

WO2010149268A1 - Device for embossing in particular the collar of a hinged-lid pack for cigarettes

Info

Publication number: WO2010149268A1
Application number: PCT/EP2010/003448
Authority: WO
Inventors: Michael Seemann; Corvyn Sommer
Original assignee: Focke & Co. (Gmbh & Co. Kg)
Priority date: 2009-06-22
Filing date: 2010-06-09
Publication date: 2010-12-29
Also published as: EP2445794B1; DE102009030069A1; CN102459005A; AU2010265175A1; RU2012101940A; EP2445794A1; AU2010265175B2; PL2445794T3; PL2445794T5; EP2445794B2; CN102459005B; RU2544149C2

Abstract

In order to apply embossments (10) on webs or pre-cuts made of thin cardboard, particularly on pre-cuts for collars (13) of a cigarette pack of the hinged-lid pack type, the material web (18) made of thin cardboard is conveyed between rolls, that is, particularly between a cutter roll (19) and a counter roll (20). Both rolls (19, 20) are provided with embossing pieces (24, 25), which have corresponding structures for generating protrusions and depressions oriented transversely to the material web (18).

Description

Device for embossing in particular collar of a folding box for cigarettes

description

The invention relates to a device for applying material deformations or embossing on blanks made of (thin) cardboard or similar packaging material for the production of packages, in particular cigarette packs, wherein the blanks or a material web for producing blanks by separating from the material web between on opposite sides The blanks or the material web arranged embossing elements, in particular embossing rollers can be guided and the material deformation or embossing by pressure transmission to the blank or on the material web by the embossing members can be produced.

The application of material deformations, namely embossing, in the region of a collar of a cigarette pack of the folding box type during the separation of a collar blank from a material web of thin cardboard is known from WO 2006/012960 A1. In this known device collar blanks are separated in the range of rolls of the material web. One of the rolls, namely a knife roll, is provided on the circumference with contoured cutting knives or cutting edges. The opposite roller, namely counter-roller, is formed with a smooth lateral surface. On the knife roller adjacent to the cutting blades embossing elements are mounted, which cause a deformation of the material web or the collar blank in the area between the rollers. However, the embossing effect is unsatisfactory.

The invention has for its object to further develop the device mentioned above so that optimal imprints in the blanks or in the web of thin cardboard or similar material, in particular in the range of Kragenzuschnitts, can be produced. To achieve this object, the device according to the invention is characterized in that the cooperating embossing elements, in particular embossing rollers, corresponding embossing areas or embossing pieces with elevations and depressions on the one hand and with these corresponding depressions and elevations on the other hand, such that the material to be deformed on both sides act upon with shaping pressure bar is.

The peculiarity of the invention is therefore that the thin cardboard is acted upon by embossing organs in the sense of female and male. This results in a conspicuous and permanent embossing deformation even with very short work cycles. In particular, cooperating embossing areas or embossing pieces are arranged on revolving rollers of a knife roller unit for producing collar pieces, wherein the collar pieces are used for the production of cigarette packs of the folding box type. Alternatively, the embossings can also be produced in cycles by corresponding, mutually movable stamp with corresponding embossing areas. The effective embossing is combined with the application of a cutting cut for the blank.

The embossing pieces are detachably arranged in recesses of the rolls, namely in the knife roll on the one hand and the counter roll on the other hand, so that they lie during the embossing process on both sides of the blank or the web and produce the embossing due to the shaping pressure transfer. Projections of one embossing piece are effective in the region of corresponding recesses of the other embossing piece. At least one of the embossing pieces is adjustably arranged for changing the relative position, in particular in connection with the dimension of the knife edges arranged on the circumference of the knife roller.

Alternatively, corresponding embossing areas can be incorporated or formed in lateral surfaces of the interacting rolls (knife roll and counter roll). It is advantageous that at least the counter-roller has a coat of particularly hard material, namely a coat Ceramic or sintered metal. In the shell of the respective roller, in particular in the coat of hard material, embossing areas are incorporated with projections and recesses, in particular in the function of a die.

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

1 an opened cigarette pack of the type folding box with embossing on the collar,

Fig. 2 shows a detail II of the package of FIG. 1, in enlarged

Scale,

3 shows a device for producing embossings on (collar) blanks in a schematic side view or in longitudinal section,

4 is a transverse view of the rollers according to viewing plane IV-IV of FIG. 3, on an enlarged scale,

5 shows an embossing piece as a detail on a further enlarged scale, FIG. 6 shows a detail of the device according to FIG. 3, namely a section VI, on an enlarged scale,

Fig. 7 is a transverse view VII-VII in Fig. 6, Fig. 8 is a cross-section VIII-VIII in Fig. 6, Fig. 9 shows a detail IX of Fig. 8 in modified relative position, slightly enlarged, Fig. 10 is a cross section XX of Fig. 4 by rolling, but another embodiment.

In the drawings, the preferred application is shown, namely the attachment of embossments 10 on a cigarette pack made of thin cardboard, here in the execution as a folding box or Hinge Lid Pack. By default, this type of packing consists of a (lower) box part 1 1, a lid 12 pivotally connected thereto and a collar 13 here of a separate blank. This forms a collar front wall 14 and collar side tabs 15. The collar 13 is in the box part 11 arranged and connected on the inside at least with a box front wall 16. An upper portion protrudes from the box part 11 and is visible with the lid 12 open. Within the folding box thus formed a cuboid cigarette block 17 is arranged as a package contents.

The embossment 10 is attached to the cigarette pack or folding box with the above structure on the collar 13, on the collar front wall 14 in a protruding from the box part 1 1 area. The embossment 10 is formed here as a decorative element. However, as an alternative or in addition, embossing with information, that is to say characters or symbols with a characterizing character, can be applied.

The embossment 10 is produced in a special way, namely with a material deformation that emerges from the plane of the material of the embossing carrier on one side or on both sides. In the present exemplary embodiment (FIGS. 6, 8), the embossing is designed so that it projects beyond the plane of the blank or the collar front wall 14 on one side, namely toward the free visible side of the collar 13.

The embossment 10 is mounted in the region of a continuously operating embossing unit with rotating embossing rollers, between which the blank to be embossed or a material web 18 of (thin) cardboard is moved through. For attaching the embossment 10 to a collar 13, a collar apparatus (FIG. 3) is used with rollers arranged on both sides of the material web 18, in particular above and below. This is an (upper) knife roller 19 and a (lower) counter roller 20. The material web 18 is conveyed between the two rollers 19, 20 (continuously) through, wherein the exact position of the embossing 10 attached and about the same time a blank for the collar 13 is separated. The material web 18 is conveyed by a drive member, here by feed rollers 21, 22. At a distance in front of the rollers 19, 20, an organ for detecting marks on the material web is arranged, namely a sensor 23 which scans printed marks on the material web 18 and so the rollers 19, 20 controls. On the circumference, namely on the lateral surface of the rollers 19, 20 embossing areas are mounted, in the embodiment of FIG. 3 to FIG. 9 embossed pieces 24, 25. These are separate shaped pieces in recesses 26, 27 of the two rollers 19th , 20 are arranged. Both rollers 19, 20 are therefore designed so that they exert a shaping, forming effect on the material web 18 and the blank. The embossing pieces 24, 25 or their embossed part 28, 29 are formed with corresponding projections 30 and recesses 31. The shapes or structures of the embossed parts 28, 29 of the rollers 19, 20 are matched to one another in the sense of positive and negative form or in the sense of male and female, so that, for example, a projection 30 of the one embossing part enters the recess 31 of the other embossing part , with the result that in the area of the embossing 10, the cardboard of the material web 18 projects beyond the plane of the web to one side and / or the other side. In the present embodiment, the embossing member 28 of the knife roller 19 is formed as a male and the embossing member 29 of the backing roll 20 as a die. In the finished blank or collar 13, accordingly, the embossment 10 is directed to the outside, ie to the visible side of the collar 13 with the lid open.

The embossing pieces 24, 25 are detachably arranged in the pocket-shaped recesses 26, 27 on the circumference of the rollers 19, 20. In the present

Embodiment (Fig. 6) in addition to the embossing member 28, 29 each have a projection 32 is formed as a lowered set stage. In this area, the embossing piece 24, 25 with a fastening means, here by means of screw 33, attached to the roller 19, 20. The screw 30 or a head thereof is located in a recess of the embossing piece 24, 25. At least the embossing member 28, 29 projects (slightly) over the

Lateral surface of the roller 19, 20 of time.

In the embodiment as a collar apparatus, one of the rollers 19, 20, namely the knife roller 19, is provided with a number of knives or cutting edges 34 which correspond to the contour of the blank to be produced, in this case the contour of a collar 13 (FIG. 4). The embossing pieces 24, 25 are arranged in the immediate vicinity of a cutting edge 34, which follows in the direction of rotation. The embossing pieces 24 ^ 25 are adjustably mounted on the rollers 19, 20, namely with respect to the relative position of the embossed parts 28, 29 to the lateral surface of the rollers 19, 20. In the present embodiment, the embossing piece 24, 25 on spacers within the recess 26, 27th stored, namely on sheet metal pieces 35, preferably made of spring steel. Several sheet metal pieces 35 are arranged to form a package as a support for an embossing piece 24, 25 at the inner bottom of the recess 26, 27, preferably with a bore in the region of the screw 33, so that the sheet metal pieces 35 are fixed. By changing the number of sheet metal pieces 35, namely by removing or adding sheet metal pieces 35, the relative position of the embossing piece 24, 25 is determined. A change is required in particular with adaptation to the effective working depth of the cutting edges 34.

An advantageous alternative works with embossing pieces 24, 25 of different dimensions or (radial) depth. For a collar apparatus, therefore, a set is provided with stamping pieces 24 for the knife roller 19, which are used according to the dimension of the knife roller or the cutting edges 34 or exchanged during regrinding of the cutting edges 34.

The blanks of a collar 13 cut off in the region of the rollers 19, 20 and provided with at least one embossing 10 are transported away by conveying elements or conveying rollers 36. These are formed so that only in lateral areas a contact of the conveyor rollers 36 is given to the blank for the collar 13, while at least the region of the embossment 10 by reduced diameter at least one of the conveyor rollers 36 creates a clearance or space 43 to a Contact of the roll coats with the embossing 10 to avoid.

An area of the material web 18 or a blank which is acted upon by the embossing parts 28, 29 in the sense of material deformation is fixed by pressure elements so that undulations in a region adjacent to the embossing 10 are avoided. In the present embodiment, the embossing member or the embossing piece 24, 25 with a Provided support edge or support web 37, which in the present case is designed as a frame or as a closed enclosure (Fig. 5). The support web 37 surrounds the region of the projections 30 and / or recesses 31. Advantageously, the embossing pieces 24, 25 are formed such that the support web 37 is attached to an embossing piece, in this case on the embossing piece of the knife roller 19 (FIG. 8). The support web 37 rests against the material web 18 with increased pressure during the embossing process, so that it is clamped in conjunction with the opposing embossing piece (FIG. 9). As a result, the material web 18 or the blank is locally fixed against contraction to form unwanted wrinkles. The support web 37 may be correspondingly attached to both embossing pieces 24, 25. The support web 37 can produce a weakly recognizable border 41 of the embossing 10 in the region of the embossing 10 (FIG. 2).

An advantageous alternative embodiment of a roll-based embossing unit is shown in FIG. The upper roller may be formed as a knife roller 19, preferably with all the features of the embodiment described above. Deviating from the counter roll 20 is formed. This consists of a roller core 38 made of steel or other

Material. A roll shell 39 consists of a high-strength material, in particular ceramic or sintered metal.

The roll shell 39 is provided with a plurality of embossed areas 40 formed or incorporated. These are aligned with respect to the position and in terms of the design of the arranged on the knife roller 19 embossing pieces 24, so that by co-operation of the embossing areas 40 on the one hand and the embossing pieces 24 on the other hand, the embossment 10 is prepared in the manner described. Such a formed embossing device can be produced with less effort with respect to the counter-roller 20. In this embodiment of a roller, in particular counter roller 20, the embossing areas 40 are formed as a die.

At least the counter-roller 20 or the lateral surface thereof is associated with a scraper 42 which frees the circumference of the counter-roller 20 from material residues. The devices can be used in the same or analogous manner also for attaching embossments to individual, prefabricated pack blanks, in particular for embossing blanks for cigarette packs of the folding box type. These are conveyed successively between the rollers provided exclusively with embossing elements.

LIST OF REFERENCE NUMBERS

10 embossing 39 roll jacket

11 box part 40 embossing area

12 lid 41 outline

13 collar 42 scraper

14 collar front wall 43 free space

15 collar side tabs

16 box front wall

17 cigarette block

18 material web

19 Knife roller 0 Counter roller 1 Feed roller 2 Feed roller 3 Sensor 4 Embossing piece 5 Embossing piece 6 Recess 7 Recess 8 Embossing part 9 Embossing part 0 Projection 1 Well 2 Lug 3 Screw 4 Cutting edge 5 Sheet metal piece 6 Conveyor rollers 7 Support web 8 Roll core

Claims

claims

1. A device for applying material deformations or embossing (10) on blanks of (thin) cardboard or similar packaging material for the production of packages, in particular cigarette packs, wherein the blanks or a material web (18) for producing blanks by separating from the material web (18) can be guided between embossing elements arranged on opposite sides of the blanks or the material web, in particular between embossing rolls (19, 20), and the material deformation or embossing (10) can be produced by pressure transmission to the blank or to the material web (18), characterized in that the cooperating embossing elements, in particular embossing rollers (19, 20), corresponding embossing areas (40) or embossing pieces (24, 25) with elevations or projections (30) and corresponding recesses (31) such that the deformed Area of the blank or the material web (18) out side with formgebe ndem pressure can be acted upon.

2. Apparatus according to claim 1, characterized in that in the manufacture of blanks for collar (13) as part of a (cigarette) pack of the type folding box / Hinge lid a web (18) of thin cardboard continuously between at least two opposing rollers (19, 20) can be conveyed through, which have embossing pieces (24, 25) or embossed areas (40) formed on their jacket in accordance with the embossing (10) to be produced, such that the mutually facing, corresponding embossing pieces (24, 25) or embossing areas (40) in the sense of a positive mold on the one hand and negative mold on the other hand - correspond to male and female - at the same time on both sides of the material web (18) are effective.

3. Apparatus according to claim 1 or 2, characterized in that at least one of the rollers (19, 20) as a knife roller (19) and the other as a counter-roller (20) is formed, wherein the knife roller transverse Cutting (34) for cutting blanks for the collar (13) immediately after the embossment (10).

4. Device according to claim 1 or one of the further claims, characterized in that the rollers (19, 20) at opposite, corresponding points at least one recess (31), in each of which an embossing piece (24, 25) is arranged, wherein the associated embossing pieces (24, 25) of the rollers (19, 20) are formed corresponding to projections (30) on the one hand and recesses (31) on the other.

5. Apparatus according to claim 4 or one of the further claims, characterized in that each embossing piece (24, 25) has a embossing part (28, 29) with areas for producing the embossing (10), wherein in addition to the embossing part (28, 29) a recessed projection (32) is formed and in this region a connecting means for fixing the embossing piece (24, 25) on the roller (19, 20) is mounted, in particular a screw (33).

6. Apparatus according to claim 2 or one of the further claims, characterized in that the embossing pieces (24, 25) in terms of

Relative position on the roller (19, 20) are adjustable, in particular in the radial direction thereof for adaptation to the embossing (10) or to the effective dimensions of the cutting blade or cutting edges (34) of the knife roller (19).

7. Apparatus according to claim 6 or one of the further claims, characterized in that in the recess (26, 27) for receiving the embossing piece (24, 25) interchangeable or removable spacers are arranged, on which the embossing piece (24, 25) is supported, in particular (several) shims or sheet metal pieces (35) which can be removed or supplemented if necessary for adjusting the embossing piece (24, 25).

8. The device according to claim 2 or one of the further claims, characterized in that an embossing device, in particular a Knife roller (19) of a collar apparatus, a plurality of embossing pieces (24) of different dimensions, in particular different (radial) depth are assigned and that they are alternatively according to the dimension of the knife roller or cutting (34) of the knife roller (19) attachable to this.

9. Device according to claim 1 or one of the further claims, characterized in that the blank or the material web (18) is fixed at least during the embossing process outside a embossing area against wrinkling, in particular by a holding area surrounding the embossing area or support web (37). which is arranged on at least one of the embossing pieces (24, 25) and exerts pressure on the material web (18) or blank during embossing in order to fix or clamp it.

10. The device according to claim 1 or one of the further claims, characterized in that the embossing pieces (24, 25) at least partially made of a high-strength material, in particular of ceramic or sintered metal.

11. The device according to claim 1 or one of the further claims, characterized in that at least the counter roller (20) of a collar apparatus for producing blanks for a collar (13) has an outer roll shell, wherein the roll shell (39) integrally formed embossed areas (40). has, which cooperate with corresponding embossing areas of the knife roller (19), in particular with attached thereto embossing pieces (24).

12. The device according to claim 11, characterized in that the counter-roller (20) has a roll shell (39) made of high-strength material, in particular ceramic or sintered metal.