DE102008020009A1 - Method for erecting, forming and joining folding blanks for packaging machine, involves arranging base wall elements at side wall elements along lower circular edge - Google Patents

Abstract

The method involves arranging base wall elements (3.1',3.2',3.3',3.4') at side wall elements (2.1',2.4') along a lower circular edge. A folding blank-base wall (3') is arranged at the base wall element. A joining plate element (5') is arranged along one of the side wall-outer edges (K3,K4). A folding blank-side wall (2') is provided, which has one or more side wall elements arranged at the folding blank-side wall. An independent claim is included for a device for erecting, forming and joining folding blanks for a packaging machine.

Description

Technical area

The The invention relates to a method for erecting, shaping and joining Folding cartons made of folded carton blanks, in particular for packaging machines or packaging equipment according to the preamble of claim 1 and a device for carrying out the method, in particular a carton erector.

In individual packaging machines or in a packaging system with each other chained packaging machines are each to be packed Packaged goods and this provided packaging, in particular cardboard cartons, merged. folding cartons have to previously from prefabricated, non-glued or partially glued folding carton blanks manually or automatically erected in carton erectors and endged.

folding cartons are usually polyhedra, especially hexahedra. Cut one the surface model a polyhedron along a sufficiently large number from edges on, one can create a coherent system of bounding surfaces, the Mesh of the polyhedron, unfold in one plane. Vice versa let yourself from the network of the polyhedron by bending or folding impact along certain Sides of the faces as well as with help in addition attached adhesive salts create the surface model of the body. For example, the mesh of a box consists of a contiguous one System of three pairs of congruent, polye-bounding surfaces Rectangles, which basically can be arranged in different ways to each other.

It is known for the production of folding cartons serving as packaging This as a flat, ungekled folding carton blank the processing process supply. The conventional vending machine version with classic four-point bonding works with folding carton blanks, which essentially cruciform To form polyhedron networks, on each side of a generally rectangular, centered Bottom wall in each case joins a side wall, which by a later folding impact facilitating notch groove is offset in each case from the bottom wall. At least two opposite Sidewalls are wing-like at the edges in pairs formed. Such cartons blanks can be by conventionally known folding shafts with appropriate punch passages and push elements easy erected and based on the attached joining tabs with the then spatially adjoining side walls together, usually at the after folding and erection between joining tabs and Seitenwandungsteilen formed four surface contacts permanently joined, in particular positively bonded become.

Due cut falls in the corner areas of such, emanating from a rectangular base, cross-shaped Faltschachtel-blanks, especially in an unfavorable Length-width-height-side-ratio of trainees folding box but a lot of cutting waste at. For Users of carton erectors are therefore those with such loss of material Blanks conventional working automated folding carton forming despite high, basically personnel costs saving automation due to the high cardboard costs increasingly uneconomical.

Around To minimize material losses, is therefore also of partially pre-glued Faltschachtel-blanks out, in which, starting from a rectangular base the packaging all the individual side wall elements forming the entire carton side wall under the essential formation of a rectangle in a web shape next to each other are arranged. In particular, for forming a tray-shaped carton ("Tray") are on lower edge of the rectangular side wall still serving as a later bottom closure Base closure-walls formed. To form a carton box which can also be closed at the top can also at the top of the rectangular side wall lid-closure walls be formed. In particular, such blanks at the web-like Sidewall in the area of the outside Up edges marginally or more joining tabs on. After previous central refolding by 180 ° together Fold the joining tab also around 180 ° as well Bonding and flat pressing the join tab These blanks are then used as flat-crimped pods or "American Cases "insofar prefabricated provided to the packaging users.

Even though these pods of material minimized and thus cost-saving blanks go out, those have turned by 180 °, however, pre-glued and pre-pressed sleeves provided in this way a number of disadvantages.

The central turning of the pre-glued carton blank and the folding of the joining tab by 180 ° each entails the risk that the packaging material, in particular cardboard or corrugated cardboard, tears at the fold. This is often the case even if traditionally for material-saving preparation of folding operations on the fold line for the purpose of material compaction by grooves previously a Full groove or a hollow groove was formed. Also, corrugated board does not always break at the target Kerbrille, but also in a neighboring wave trough. Moreover, if the folding does not take place exactly along the desired fold lines, the formation of asymmetrical folding chutes is not excluded. Because the pre-glued and folded blanks also consist of two or even three layers of cardboard at the splices, they are also more difficult to transport or store. Since these already pre-glued at the manufacturer of the carton blank blank blanks pack only in smaller containers, transport, ship or store, this means in terms of packaging, transport and storage of larger packaging containers also basically more packaging - And transport and in turn more packaging waste, along with associated packaging disposal costs. Moreover, the pre-life of these sleeve blanks and thus also the referral of pre-glued sleeves by the packaging industry from the cardboard manufacturer is relatively expensive.

Here the invention tries to remedy this.

task The invention relates to a method and a device for erecting, Shapes and Joining a conventional material-friendly cut, two-dimensional present, ungeklebten, web-shaped Folding carton blank to provide a three-dimensional shaped body, which make it possible a variety of on different polygonal or curvilinear floor plans based cylinder-like or prismatic carton geometries material-friendly and cost-effective manufacture.

These The object is achieved by a method according to claim 1 and a device solved according to claim 12.

According to the invention, it is proposed to cut sheet-shaped folding carton blanks, which are specifically cut in a material-friendly manner, by means of first working members of a folding carton blank feeder ( I ) and in a Aufrichtstation ( II ) and in a forming and joining station ( III ) with the formation of an inner open tubular shaped body with self-contained side wall its Seitenwandungs-edge edges flush together so that a arranged on this Faschen pocket element with a then directly opposite seitenwandendständige side wall element form-fitting surface comes to rest and can be joined together by means of second working organs on the contact surface and that the carton blank is folded by means of third working members by centrally inwardly occurring fold wrapping along all the side wall elements with each other deducting first folding-target score lines, adjacent side wall elements with each other or Seitenwandendständige Seitenwandungselemente and Fügelaschenelemente are always aligned with each other at a turning angle of less than 180 ° ,

Especially it is advantageous that the conventional at the manufacturer of pre-glued sleeves completed joining process the side wall according to the invention now directly at the packaging users, in particular directly in the Packaging industry in the local manufacturing cost-saving can be integrated.

Thereby, that the former flat lying side wall in the room becomes an inside open and outside closed tubular shaped body closed and put together, preferably can be glued, an excessive stress of this to be hammered wall parts safely avoided. In particular, will a folding of adjacent wall parts by 180 ° with this in principle to feared Packaging cracks or breaks locked out.

Especially can be advantageous according to the invention most diverse prismatic shaped bodies, based on any polygonal floor plans, such. B. squares, pentagons and hexagons, or even a wide variety of cylindrical moldings, based on any curvilinear floor plans, such. As circles, ovals and arched triangles are formed. Even on partial polygonal-curvilinear-mixed Floor plans, such as B. circular sectors, based moldings, leave to shape oneself.

Especially it is gentle on the cutting material, the side wall of the carton blank in essentially rectangular form and by suitable attachment of notch grooves to be erected Specify the network of folding carton to be formed. Is possible but also, the douches only during in the forming and joining station expiring molding process by means of a to be arranged in the inner region of the sleeve-shaped molding Form organ, in particular a forming punch or a mold rail, on the inside surfaces of the Emboss side wall.

Advantageous is the carton blank by means of two sidewall edge-sided Seitenwandungselementen Ansetzender first working organs, preferably suction organs, the Folding box blank feeder taken and while of the entire erection-forming and joining process permanently so kept.

The second working organs are conventional as Add mandrel joining lance or joint rail, in the present form-fitting Add preferably designed as a folding rail. The join between sidewall edge sidewall elements and the fly ashtrays itself is conventional by gluing or folding.

The third work organs are preferably as mold rails or mold punches or as sidewall-centered Sidewall elements in addition attached Sauggreiforgane trained. By means of the latter, the while the folding of the molding expiring molding process simply by a correspondingly controlled Traversing movement of the suction gripping members are accomplished.

For the purpose of required training a bottom wall, the bottom wall elements by means fourth working organs, conventional Thrust elements, folded in by 90 ° and with each other or with opposite Sidewall elements permanently joined, in particular glued, hooked or stapled.

Preferably is at the processed folding carton blanks along the upper peripheral edge the side wall on at least one side wall member also at least one closing wall element forming an upper folding box closing wall arranged, wherein side wall elements and associated closure wall elements offset from each other by third folding-target score lines are. This is not only the processing of tray boxes (trays), but also possible from full cartons, which fully enclose the packaged goods.

For the purpose of Training this closing wall can the Schließwandungselemente, by means of fifth Work organs by 90 °, conventional Pushers, folded and with each other or with opposite Side wall elements joined, in particular be glued, hooked or stapled.

A inventive device to carry out of the method may in particular comprise a carton erector.

Farther This device may be part of a packaging machine.

embodiments The invention will be explained and described in more detail with reference to FIGS.

1 shows a conventionally known in the art conventionally unattached cross-shaped carton blank

2 Figure 1 shows a conventional non-glued tape carton blank conventionally known in the art

3 shows a conventionally known in the art tape-shaped carton blank after 2 in the factory pre-glued and folded state

4 shows a second sleeve-shaped molding 8th

5 shows a third sleeve-shaped molding 9

6 shows a fourth sleeve-shaped molding 10

7 shows a fifth sleeve-shaped molding 11

8th shows a schematic flow diagram of the method according to the invention

1 shows a conventionally known in the art non-glued cross-shaped carton blank with a centrally located bottom wall, at the opposite sides join in the unfolded state facing Seitenwandungsteile. On the narrower front side Seitenwandungsteilen wing bags are provided for bonding with flat adjoining Seitenwandungsteilen. With such blanks falls in the corner areas EB but especially a lot of cutting waste.

2 shows a known in the art itself also conventionally known cut from a rectangular Kartonageband ungeklebten ribbon-shaped carton blank 1 according to a first embodiment with relatively little blank waste. The carton blank 1 has a folding carton folding carton side wall 2 with a lower side wall circulation edge K1, an upper side wall circulation edge K2, a first side wall marginal edge K3 and a second side wall marginal edge K4.

The carton side wall 2 is present from four the carton side wall 2 building up side wall elements 2.1 . 2.2 . 2.3 . 2.4 composed. Along the lower circumferential edge K1 is on each side wall element 2.1 . 2.2 . 2.3 . 2.4 one each a carton bottom wall 3 constituting bottom wall element 3.1 . 3.2 . 3.3 . 3.4 arranged.

Along the side wall edge K3 is a wing bag element 5 intended.

The carton blank 1 has the side wall elements 2.1 . 2.2 . 2.3 . 2.4 with each other as well as the sides wall edge side wall elements 2.1 . 2.4 and the wing bag element 5 offset from each other first folding target score lines KL1 and the side wall elements 2.1 . 2.2 . 2.3 . 2.4 and the associated bottom wall elements 3.1 . 3.2 . 3.3 . 3.4 each set off second folding target score lines KL2 on.

3 shows the band-shaped carton blank 1 to 2 in pre-glued and folded state. The carton blank 1 was factory-folded along two first folding-target score lines KL1 and positively between the Fügelaschenelement 5 and the marginal sidewall element 2.4 glued and pressed. When folded, it forms a sleeve.

The 4 to 7 show sleeve-shaped moldings 8th . 9 . 10 . 11 each with closed side wall 2 in various embodiments as they can be created from corresponding strip-shaped, and processed according to the invention folding carton blanks.

4 shows a second sleeve-shaped molding 8th with curvilinear, here circular floor plan, as he from a Faltschachtelzuschnitt, whose Seitenwandung 2 only a single side wall element 2.1 together with fly ash 5 can be formed, shaped and joined.

5 shows a third sleeve-shaped molding 9 as he made a carton blank whose sidewall 2 three side wall elements 2.1 . 2.2 . 2.3 together with fly ash 5 and having three first target score lines SK1, can be shaped and joined.

6 shows a fourth sleeve-shaped molding 10 like he made out of a carton box, its side wall 2 six side wall elements 2.1 . 2.2 . 2.3 . 2.4 . 2.5 . 2.6 together with fly ash 5 and six first target score lines SK1 has, can be shaped and joined.

7 shows a fifth sleeve-shaped molding 11 as he made a carton blank whose sidewall 2 two side wall elements 2.1 . 2.2 together with fly ash 5 and two first target score lines SK1 has, can be shaped and joined. This shaped body 11 has a partially rectilinear as well as a partially curvilinear ground plan.

8th shows the schematic schematic flow diagram of the method according to the invention, starting from a relative to the first carton blank 1 slightly modified second carton blank 1' without the formation of cover surface side upper closing wall parts as well as with regard to material savings compared to the bottom wall elements 3.1 . 3.2 . 3.3 . 3.4 further optimized floor wall elements 3.1 ' . 3.2 ' . 3.3 ' . 3.4 ' ,

The well-known folding box blank 1' is in a device, in particular in a carton erector of a packaging machine by means of first working members, preferably by means of two on the marginal side wall elements 2.1 ' . 2.4 ' applying suction gripping members, a folding carton blank feeder ( I ) and in a Aufrichtstation ( II ) erected. On its side wall margins K3, K4 in a forming and joining station ( III ) to form an internally open tubular shaped body 6 with self-contained side wall 2 ' in the room flush so merged that on the side wall 2 ' arranged wing bag element 5 ' with the then directly opposite seitenwandendständi gene side wall element 2.4 ' comes form-fitting surface to the plant and can be joined together by means of second working organs on the contact surface. This can be done either by a suitably coordinated movement of the first working organs and / or with the aid of a folding rail. After appropriate positioning of the contact surfaces, the contact surface is then joined, preferably glued, by means of second working members.

The carton blank 1' This is done by means of third working organs by centrally inwardly occurring fold wrapping along the all side wall elements 2.1 ' . 2.2 ' . 2.3 ' . 2.4 ' convoluted with each other folding first folding-target score lines K1. As a result, a spatially internally open, in this case based on a parallelogram sleeve-shaped molding 6 with self-contained side wall 2 ' educated. According to the invention, however, a wide variety of prism-like or cylinder-like folding box geometries based on polygonal or curvilinear ground plans can be realized, in particular the 4 to 7 demonstrate.

By a subsequent movement of the first working organs and / or with the help of the median side wall elements 2.2 ' . 2.3 ' attacking other work organs, preferably again suction pads organs, or under Zuhilfename of appropriately trained mold rails becomes vorlegend after formation of the sleeve-shaped first molded body 6 with a parallelogram plan view in the present edition guiding example ultimately in the form of a cuboid shaped body with a rectangular layout desired folding carton 7 aligned by means of fourth working organs on a Einfalt corner angle of exactly 90 ° or formed and finally for the purpose of forming a bottom wall 3 ' conventionally via a joint of the bottom wall elements 3.1 ' . 3.2 ' . 3.3 ' . 3.4 ' by means of fifth working members with each other, preferably by means of push elements, in a bottom closure station (IV) closed.

All shaped body geometries 6 . 8th . 9 . 10 . 11 can conventionally be joined or closed at the bottom and / or top surface.

Neighboring side wall elements 2.1 ' . 2.2 ' . 2.3 ' . 2.4 ' or the sidewall end sidewall elements 2.1 ' . 2,4 ' in relation to the wing bag element 5 ' remain during the entire molding and joining process always under a material fractures sure exclusion angle less than 180 °.

Of the so erected folding carton can then in the packaging machine filled be used, for example, with bottles, cans or other containers, without any further intermediate storage or transportation outside the packaging machine requires.

1

first Folding box blank

1'

second Folding box blank

2

Folder-side

2.1

first Seitenwandungselement

2.2

second Seitenwandungselement

2.3

third Seitenwandungselement

2.4

fourth Seitenwandungselement

3

lower Folding carton bottom wall

3.1

first bottom panel

3.2

second bottom panel

3.3

third bottom panel

3.4

fourth bottom panel

4

upper Folder-Schließwandung

4.1

first Schließwandungselement

4.2

second Schließwandungselement

4.3

third Schließwandungselement

4.4

fourth Schließwandungselement

5

Add tab member

6

first sleeve-shaped molding

7

folding

KL1

first Folding target score lines

KL2

second Folding target score lines

KL3

third Folding target score lines

K1

lower side wall peripheral edge of 2

K2

upper side wall peripheral edge of 2

K3

first sidewall edge of 2

K4

second sidewall edge of 2

I

Folding box blank feeder

II

up station

III

Form and joining station

IV

Ground-closing station

8th

second sleeve-shaped molding

9

third sleeve-shaped molding

10

fourth sleeve-shaped molding

11

fifth sleeve-shaped molding

Claims (13)

Method for erecting, shaping and joining folding cartons of flat and unfolded prefabricated, two-dimensional folding carton blanks for packaging machines or packaging machines, folding carton blank feeder providing folding carton blanks, characterized in that the folding carton blank ( 1 . 1' ) a folding carton side wall (FIG. 2 . 2 ' ) having a lower side wall recirculating edge (K1), an upper sidewall receding edge (K2), a first sidewall edge (K3) and a second sidewall edge (K4), the carton sidewall (K1) 2 . 2 ' ) from one or more of the carton side wall ( 2 ' ) building up Seitenwandungselementen ( 2.2 . 2.3 . 2.3 . 2.4 , ...; 2.1 ' . 2.2 ' . 2.3 ' . 2.4 ' , ...), and wherein along the lower peripheral edge (K1) on at least one side wall element ( 2.1 . 2.2 . 2.3 . 2.4 , ...; 2.1 ' . 2.2 ' . 2.3 ' . 2.4 ' , ...) at least one folding carton bottom wall ( 3 . 3 ' ) constituting bottom wall element ( 3.1 . 3.2 . 3.3 . 3.4 , ..; 3.1 ' . 3.2 ' . 3.3 ' . 3.4 ' and at least one wing pocket element (K3, K4) along at least one of the side wall marginal edges (K3, K4). 5 . 5 ' ), and wherein the folding box blank ( 1 . 1' ) Sidewall Elements ( 2.1 . 2.2 . 2.3 . 2.4 , ...; 2.1 ' . 2.2 ' . 2.3 ' . 2.4 ' , ...) with each other and sidewall edge sidewall elements ( 2.1 . 2.4 ; 2.1 ' . 2.4 ' ) and fly ash elements ( 5 . 5 ' ) deducting first folding-target score lines (KL1) and side wall elements ( 2.1 . 2.2 . 2.3 . 2.4 , ...; 2.1 ' . 2.2 ' . 2.3 ' . 2.4 ' , ...) and associated floor elements ( 3.1 . 3.2 . 3.3 . 3.4 , each having second settable second folding score lines (KL2), that the folding box blank ( 1 . 1' ) by means of first working elements of the folding carton blank feeder ( I ) and in a Aufrichtstation ( II ) and in a forming and joining station ( III ) to form an internally open tubular shaped body ( 6 ) with self-contained side wall ( 2 ) its side wall marginal edges (K3, K4) are brought together flush so that a wing tongue element arranged thereon ( 5 . 5 ' ) with a then directly opposite Seitenwandendständigen side wall element ( 2.1 . 2.4 ) comes form-fitting surface to the plant and is joined together by means of second working organs on the contact surface and that the folding box blank ( 1 . 1' ) by means of third Workpieces by centrally inwardly folding along all the side wall elements ( 2.1 . 2.2 ' . 2.3 ' . 2.4 ' , ...) folded down among each other folding first folding score lines (KL1), with adjacent side wall elements ( 2.1 . 2.2 . 2.3 . 2.4 , ...; 2.1 ' . 2.2 ' . 2.3 ' . 2.4 ' ..) with one another or side wall-end side wall elements (FIG. 2.1 . 2 . 4 ; 2.1 ' . 2.4 ' ) and fly ash elements ( 5 . 5 ' ) are always aligned with each other at a turning angle of less than 180 °. A method according to claim 1, characterized in that along the upper peripheral edge (K2) of the side wall ( 2 ) on at least one side wall element ( 2.1 . 2.2 . 2.3 . 2.4 , ...) at least one folding box closure wall ( 4 ) constructing closing wall element ( 4.1 . 4.2 . 4.3 . 4.4 ..) is arranged, wherein Seitenwan elements ( 2.1 . 2.2 . 2.3 . 2.4 , ...) and associated closing wall elements ( 4.1 . 4.2 . 4.3 . 4.4 ..) are offset from each other by third folding target score lines (KL3). Method according to one of the preceding claims, characterized in that the side wall ( 2 . 2 ' ) of the folding carton blank ( 1 . 1' ) is formed substantially rectangular. Method according to one of the preceding claims, characterized in that the folding box blank ( 1 . 1' ) by means of sidewall-edge-side wall elements ( 2.1 . 2.4 ; 2.1 ' . 2.4 ' ) attaching first working members of the folding carton blank feeder ( I ) and held during the entire erection, molding and joining process. Method according to one of the preceding claims, characterized in that the first working members are designed as suction grippers are. Method according to one of the preceding claims, characterized characterized in that the second working organs as a joining mandrel, joining lance or joint rail are formed. Method according to one of the preceding claims, characterized in that the third working members as a molding rail or molding die or as at the side wall center side wall elements ( 2.2 . 2.3 . 2.2 ' . 2.3 ' ) are attached Saugreiforgane trained. Method according to one of the preceding claims, characterized in that the join between sidewall edge-side sidewall elements ( 2.1 . 2.4 . 2.1 ' . 2.4 ' ) and fly ashtrays ( 5 . 5 ' ) takes place at the joining mandrel, Fügelanze or joint rail by gluing. Method according to one of the preceding claims, characterized in that in order to form a lower bottom wall ( 3 . 3 ' ) the bottom wall elements ( 3.1 . 3.2 . 3.3 . 3.4 , ..; 3.1 ' . 3.2 ' . 3.3 ' . 3.4 ' , ..) of the folding carton blank ( 1 . 1' ) in a bottom closure station ( IV ) folded by 90 ° by means of fourth working members and with each other or with opposite side wall elements ( 2.1 . 2.2 . 2.3 . 2.4 , ..; 2.1 ' . 2.2 ' . 2.3 ' . 2.4 ' ..) be added. Method according to one of the preceding claims, characterized characterized in that for the purpose of forming an upper closing wall Schließwandungselemente by means of fifth Work organs folded in by 90 ° and with each other or with opposite Side wall elements joined become. Method according to one of the preceding claims, characterized in that the folding box blank ( 1 . 1' ) is always and permanently held during the removal, the erection, the fold impact, the joining and the alignment by means of the first working organs. Apparatus for carrying out the method according to one of the preceding claims, especially carton erector. Apparatus according to claim 12 as part of a packaging machine.