EP0441136B1 - Method of and device for handling, especially transporting blanks - Google Patents

Method of and device for handling, especially transporting blanks Download PDF

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Publication number
EP0441136B1
EP0441136B1 EP91100479A EP91100479A EP0441136B1 EP 0441136 B1 EP0441136 B1 EP 0441136B1 EP 91100479 A EP91100479 A EP 91100479A EP 91100479 A EP91100479 A EP 91100479A EP 0441136 B1 EP0441136 B1 EP 0441136B1
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EP
European Patent Office
Prior art keywords
blanks
edges
deflection
conveyor
strand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91100479A
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German (de)
French (fr)
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EP0441136A2 (en
EP0441136A3 (en
Inventor
Heinz Focke
Kurt Liedtke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Focke and Co GmbH and Co KG
Original Assignee
Focke and Co GmbH and Co KG
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Publication date
Application filed by Focke and Co GmbH and Co KG filed Critical Focke and Co GmbH and Co KG
Publication of EP0441136A2 publication Critical patent/EP0441136A2/en
Publication of EP0441136A3 publication Critical patent/EP0441136A3/en
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Publication of EP0441136B1 publication Critical patent/EP0441136B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00Feeding articles separated from piles; Feeding articles to machines
    • B65H5/28Feeding articles stored in rolled or folded bands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/126Feeding carton blanks in flat or collapsed state

Definitions

  • the invention relates to a method for handling, in particular conveying, a large number of blanks which are connected to one another at their edges, in particular longitudinal edges, to form a continuous material web, for the production of packs, preferably in connection with a packaging machine. Furthermore, the invention relates to a device for performing the method.
  • Transporting the packaging material poses a particular problem in high-performance packaging machines. This is especially true when processing blanks from thin cardboard, for example for the production of hinged boxes (hinge-lid packs) for cigarettes.
  • the blanks specially designed for this type of pack are delivered in stacks and mostly filled by hand into a magazine of the packaging machine. This handling is labor-intensive and does not do justice to the performance of modern packaging machines.
  • the invention has for its object to propose measures for trouble-free handling, in particular the transport of blanks in connection with a packaging machine, by which the use of operating personnel is reduced to a minimum, but nevertheless promotes the blanks with high performance over longer and complex transport routes can be.
  • the method according to the invention is characterized in that the interconnected blanks are folded together like an accordion or zigzag up to the sealing position of the blanks and that the blank strand thus formed is conveyed under deflection in different directions and is thereby supported by conveying members, the blanks being fanned out in the region of the deflection parallel to their folded edges or edges or transversely to these.
  • the method according to the invention for transporting and / or storing blanks made of thin cardboard, in particular for hinged boxes, is based on a continuous material web composed of blanks which are connected to one another at their edges via material residues. In the area of these edges or remaining connections, the blanks are folded in a zigzag shape, so that the blanks lie close to one another while maintaining the bond within the material web, forming a blank strand. This is conveyed in the direction transverse to the level of the blanks and diverted under fanning out of the blanks connected to one another. The possibility of redirection is important, since this is the only way to provide funding that meets the requirements.
  • the cutting strand is also fanned out (temporarily) in the area of straight conveyor lines. This enables sections of different storage capacity to be formed on blanks.
  • the device according to the invention for handling, in particular for conveying and storing blanks, which are joined together at their edges to form a continuous strand of material and folded together in a zigzag shape to the sealing position has driven conveyor belts as conveying members which are continuous are arranged on at least two opposite sides of the cutting strand for guiding the same, and which, while taking the cutting strand with them, bear against respectively facing longitudinal edges and / or transverse edges thereof with frictional and / or positive locking, with one of the conveyor belts on the inside of the cutting strand and is provided in the area of horizontal conveyor lines on the underside and wherein the conveyor belts are divided into a plurality of directly adjoining belt sections, with deflection rollers for adjoining conveyor belts on the same axis e are arranged.
  • the zigzag-shaped, predominantly closely spaced blanks of the material web are captured and transported in the predominant area of a transport or storage section by conveyor belts on opposite sides.
  • the conveyor belts are designed in a special way, namely with an elastic, soft support, into which the edges, in particular folded edges of the blanks, are slightly pressed in, deforming the support. As a result, relative displacements of the blanks or of the folded edges with respect to the conveyor belts are excluded.
  • the blanks are fanned out in the form of a beam and thereby deflected, preferably at an angle of 90 °.
  • the free edges of the blanks extending transversely to the conveying direction are supported in the region of the deflection by an external guide and are kept at a regular distance from one another in particular.
  • the support is a correspondingly deflected deflection conveyor belt.
  • a support is provided inside is also in the area of the deflection to secure the formation of the blank strand, depending on the type of deflection, a deflection roller for the inside conveyor belt or a special form roller.
  • the transport of blanks according to the invention optimally enables the formation of blank memories.
  • a longer conveyor line with blanks arranged next to one another in a sealed position results in a high storage capacity.
  • the blanks are (temporarily) brought apart from one another.
  • conveyor belts for transporting the blanks are arranged so that the effective conveying path thereof, namely the length of a conveyor strand, can be changed.
  • the invention is concerned with the introduction of the blanks or the material web into the zigzag position of the blanks.
  • a folding element is provided according to the invention, which causes the material web fed in the extended position to fold in due to the reciprocating movement. This runs into a funnel-shaped receiving piece, which is laterally limited by divergent conveyor belts. The conveyor section for the folded material web begins after the receiving piece.
  • the device for handling, in particular conveying blanks 20, shown in detail in the drawings, can be connected to a packaging machine (not shown), but also to a station for loading and unloading containers, pallets, etc. for the extensive transport of packaging material.
  • the blanks 20 are specially designed in the present exemplary embodiment. These are blanks 20 for the production of hinged boxes, in particular for holding cigarettes.
  • the blanks 20 used for this have a special, characteristic structure, as shown and described for example in DE-A 37 16 897.
  • the blanks are connected to one another in the region of longitudinal edges 21, 22 to form a continuous material web 23.
  • the connection within the material web 23 is retained for the transport, storage, etc. of the blanks 20.
  • the material web 23 is folded in a zigzag shape (e.g. FIG. 4, middle area).
  • the material web 23 folded in this way forms a continuous blank strand 24 of fanned blanks or blanks 20 arranged side by side up to the sealing layer.
  • the blank strand 24, as can be seen in particular from FIG. 1, can be deflected in all directions, the rectangular, elongated blanks 20 each in the transverse direction ( Fig. 2) or in the longitudinal direction (Fig. 3) for deflecting the cutting strand 24.
  • the blanks 20 shown here have the structure typical of hinged boxes. In the area of transverse edges 25, 26, the blanks 20 are specially designed. The transverse edge 25 is limited in the central area of the blank 20 extending inner lid tab 27, which rests on the inside of a lid front wall 28 in the finished hinged box. The inner lid tab 27 forms a laterally projecting projection of the material web 23.
  • transverse edge 26 is directed parallel to the longitudinal axis of the material web 23 in the region of a front wall 29 of the blank 20.
  • Oblique legs 30 adjoin the sides in the region of side tabs 31, 32 of the blank.
  • the blanks 20 are connected in the manner described in DE-A 37 16 897 only in a partial area of the longitudinal edges 21, 22 via material webs 33. These extend in the area of inner side tabs 34, 35 and in the area of inner lid side tabs 36, 37 adjacent thereto. In the area of the material webs 33, the material web 23 is folded over in the zigzag-shaped formation to form a folded edge 38.
  • the blanks 20 are predominantly in a sealed position within the blank strand 24.
  • the blank strand 24 is supported on an endless conveyor in the region of the folded edges 38, that is to say on the longitudinal edges 21, 22.
  • This consists of conveyor belts 39, 40 and 41.
  • These are designed in a special way, namely with a belt 42 which consists of a tension-resistant carrier belt 43 and an elastic, soft support 44.
  • the latter faces the blanks 20 or the folded edges 38. These penetrate slightly into the elastic support 44 with corresponding deformation.
  • the cutting strand 24 is carried along by the conveyor belts 39, 40 and 41 without slipping.
  • the respective formation of the blanks 20 within the blank strand 24 is fixed.
  • the cutting strand 24 is expediently continuously supported over the full length by conveyor belts 39, 40 and 41 or other guiding and conveying members on two opposite sides. In the area of a rectilinear conveying path for the cut strand 24, this is grasped by the conveying belt 42 of a conveyor belt 39, 40 and 41 on the folding edges 38 extending on both sides, corresponding to the longitudinal edges 21, 22.
  • the conveyor belts expediently run in the central region of the blank strand 24 or the blank 20 (e.g. FIG. 6).
  • the conveyor belts 39, 40 and 41 have a smaller width than that of the blank strand 24. As a result, conveyor belts can be arranged offset to the central plane of the blank strand 24.
  • the belts 42 of the conveyor belts 39 and 40 lie against the blanks 20 in the region of the inner side tabs 34, 35.
  • the conveyor belts 39, 40 are deflected at the beginning of a rectilinear conveying path, specifically via an outer deflecting roller 45 for the upper conveyor belt 39 and via an inner or lower deflecting roller 46.
  • the lower conveyor belt 40 is driven in this embodiment, while the upper, opposite one Conveyor belt 39 runs freely without its own drive.
  • the deflection roller 45 is rotatably mounted, specifically on a drive shaft 47 for deflection rollers 48, 49 of a subsequent section of conveyor belts.
  • the design of conveying and support members in the region of the deflection of the material web 23 is of particular importance.
  • the deflection can alternatively take place via the short dimension (width) of the blanks 20 (exemplary embodiment 2) or over the longitudinal dimension (Fig. 3).
  • the blanks 20 are fanned out in the region of the deflection.
  • the folded edges 38 are arranged at a shorter distance on the radially inner side and at a greater distance from one another on the radially outer side with a correspondingly greater arc length.
  • the conveyor belt 40 running on the inside is led over the deflection point, the conveying belt 42 resting on the cutting strand 24 leading over the deflection roller 46 from a horizontal conveying direction into a vertical conveying direction.
  • the returning belt of the conveyor belt 40 is guided over a corresponding deflection roller 51 which is offset and arranged parallel to the deflection roller 46.
  • the horizontal conveyor belt 39 ends in the outer region before the deflection.
  • the conveyor belt 41 connects to the deflection area.
  • a special deflection belt 52 is provided here for guiding the blank strand 24, which is strongly fanned on the outside, in the region of the deflection.
  • This driven conveyor element is designed in the same way as the conveyor belts 39, 40 and 41.
  • the drive takes place in the area of the transition to the horizontal conveyor section (conveyor belt 39).
  • the two deflection rollers 49, 50 are mounted on a rotatably driven shaft. The deflection on the opposite side is carried out in an analogous manner via (idle) deflection rollers 53.
  • the deflection belts 52 are designed or dimensioned such that the conveying belt 42 follows the arcuate contour of the blank strand 24 in the region of the deflection. Due to the described design of the belt 42, the regular Fan formation of the blanks 20 also fixed here within the blank strand 24. The fan formation occurs automatically at the transition of the material web 23 into the sheet. For this purpose, the deflection belt 52 or its conveyor belt is driven at a higher speed than that of the conveyor belts 39, 40 and 41.
  • the deflection shown in FIG. 3 over the longer dimension of the blanks 20 is constructed in a similar manner. However, horizontally or vertically conveying conveyor belts for the cut strand 24 end at the beginning or at the end of the deflection area. Within the same, the blanks 20 are transported by an externally arranged deflection conveyor 54. This is driven, in the present case via a deflection roller 55 facing the horizontal conveying area. This is seated on a driven shaft 56. An opposite deflection roller 57 facing the vertical conveying area runs idle without a drive.
  • the deflection conveyor 54 or its conveying belt 42 bears in an arc shape on the outer edges of the blank strand 24, namely on the transverse edges 25, which are also the free edge edges of the inner lid tab 27.
  • the deflection conveyor 54 here has the width of the inner lid tab 27.
  • An outer, returning run of the deflection conveyor 54 is guided over support rollers 58.
  • the drive speed of the deflection conveyor 54 is greater than the speed of the deflection belt 52 during the deflection according to the larger arc length. Fig. 2.
  • the blank strand 24 is only slightly fanned out in the deflection according to FIG. 3.
  • the contour of the form roller 59 corresponds to the contour of the transverse edge 26 with the angled legs 30.
  • the blanks 20 are therefore supported in a form-fitting manner on the form roller 59.
  • conveying members for the blank strand 24 are arranged in the area of the longitudinal edges 21, 22.
  • the vertical conveyor rope is assigned a wider conveyor belt 61 here.
  • the horizontal conveyor line has two conveyor belts 62, 63 arranged at a short distance from one another on both sides of the blank strand 24. These are guided over separate deflection rollers 64, 65 mounted on the same axis.
  • the individual conveyor belt 61 runs over a deflection roller 66.
  • the cutting strand 24 is guided and protected in the area of the free, non-interconnected transverse edges 25, 26 by guide elements.
  • a guide web 67 is arranged at a short distance from the cutting strand 24.
  • a cheek 68 of a machine frame is located on the opposite side. This forms a protruding guide rib 69 in the region of the depression formed by the transverse edge 26.
  • the projecting acute-angled corners due to the legs 30 lie here in a protected area due to depressions in the cheek 68 on both sides of the guide rib 69.
  • Additional guide elements for the cutting strand 24 can be arranged in the area of special conveyor lines, as shown by way of example in FIGS. 9 and 10.
  • guide rails 70 are arranged on both sides of the cutting strand 24 and connected to the guide webs 67 via a support bracket 71.
  • the opposite area of the cut strand 24 also has corresponding guide elements, namely guide bars 72 in the area of the longitudinal edges 21, 22.
  • the guide bars 72 are connected to the cheek 68.
  • the cheek 68 as part of a machine frame is a supporting element for the deflection rollers of the conveyor belts and also the guide webs 67.
  • freely projecting support bolts 73 are arranged on the cheek 68.
  • the guide webs 67 are connected to the cheek 68 via support brackets 74.
  • the support bolts 73 can, if necessary, be attached to angled support arms 75, which in turn are connected to the cheek 68.
  • the design of the blank strand 24 enables the formation of blank memories or storage sections. These are formed in the area of horizontal or vertical conveyor lines. 4 shows a storage path 76 within a horizontal conveyor line. The concept of such a storage section is to fan out (temporarily) the sealing position of the blanks 20 within the cutting strand 24, namely when the storage section is being dismantled. During the normal transport phase, the blanks 20 are also conveyed in a sealed position in the area of the storage path 76. If the supply of the cut strand 24 is temporarily interrupted or reduced, the storage section 76 is removed by bringing the cuts into the fanned out position (FIG. 4).
  • the storage path 76 is assigned two conveyor belts 77 and 78 which work and are formed independently of one another.
  • the conveyor belt 77 designed in the manner already described, the cut strand 24 is fed into the region of the storage section 76 adjoining the conveyor belt 77.
  • the conveyor belt 78 is guided at the end facing the storage section 76 via larger-dimensioned deflection rollers 79.
  • the two deflection rollers 79 of the conveyor belts 78 opposite one another above and below the cutting strand 24 can be moved back and forth in the conveying plane of the cutting strand 24, in the embodiment shown in FIG. 4 from the position shown in solid lines (right) to the position shown in broken lines .
  • the position shown in solid lines corresponds to the dismantling of the storage section 76.
  • the storage is dismantled by fanning out the blanks 20 within the storage section 76.
  • the conveyor belt 78 By supplying material (cutting strand 24) through the conveyor belt 77, the storage must now be rebuilt until the blanks are oriented in the sealing position in the area of the storage path 76.
  • the conveyor belt 78 returns to the dot-dash position by shifting the deflection roller 79. This corresponds to the normal position.
  • the deflection rollers 79 are mounted on a common carriage 80. This is U-shaped in cross section (FIG. 10) and can be moved with an (upright) support wall 81 on parallel slide rods 82. The carriage 80 moves with the guide rollers 79 into the positions described.
  • each conveyor belt 78 is guided around a first loop roller 84 on the slide 80 and a second, fixed loop roller 85 on the machine frame or on the cheek 68.
  • the distance between the two loop rollers 84, 85 becomes smaller when the deflection rollers 79 are shifted into the normal position, corresponding to the removal of the web loop 83.
  • the cutting strand 24 is stabilized in the area of the storage path 76, that is to say in an area without conveyor belts, by other support members in the respective formation which changes with respect to the zigzag position of the cuts 20.
  • two elastically stretchable support straps 86, 87 are arranged above and below the blank strand 24. These are designed as round profiles.
  • the support straps 86, 87 are spaced apart from one another on the longitudinal edges 21, 22 of the blanks 20.
  • the support straps 86, 87 are firmly anchored on the entry side of the storage section 76, in the present case with fastening bolts 88 on the cheek 68.
  • the support straps 86, 87 run over suitably designed profile rollers 89, 90. These are supported coaxially here with deflection rollers 91 for the Conveyor belts 77.
  • the profile rollers 89, 90 are rotatably mounted on a support pin 73 of the deflection roller 91.
  • the opposite end of the support belts 86, 87 is connected to the slide 80, and also via a fastening bolt 92.
  • the fastening here takes place in the axis of the deflection roller 79.
  • the support belts 86, 87 are removed from the support plane via profiled guide pieces 93 of the slide 80 led to the fastening bolt 92.
  • the support belts 86, 87 are stretched when the storage section 76 is dismantled in accordance with the displacement of the conveyor belt 78 up to the maximum stretch according to the position in FIG. 4, solid lines. This prevents a relative movement of the blanks 20 within the storage path 76 with respect to the support members, namely the support belts 86, 87.
  • the "stretching”, namely spreading of the blank strand 24 takes place to the same extent as the stretching of the support belts 86, 87, so that the zigzag folded blanks 20 are guided smoothly into the fanned out position and back into the sealing position.
  • the conveyor belt 77 stands still or runs at a reduced conveying speed.
  • FIGS. 11 and 12 Another Tehma is addressed by way of example in FIGS. 11 and 12. It is about the formation of the blank strand 24 by zigzag-shaped folding of the material web 23.
  • This can be provided in various ways, namely as a wound bobbin or - as shown in FIGS. 11 and 12 - in folded stacks 94 on one Pallet 95 or the like.
  • the material web 23 is drawn off from the stacks 24 one after the other, namely by a pair of pull rollers 96.
  • the material web 23 thereby temporarily reaches the stretched position.
  • a folding member 97 follows, which (again) produces the zigzag folding and thus forms the cutting strand 24, which is transported away between two (upright) conveyor belts 40, 41.
  • the folding member 97 here consists of two folding rollers 98, 99 arranged at a short distance from one another, between which the material web 23 runs.
  • the folding rollers 98, 99 are connected to a guide piece 100 which is moved back and forth in a profile rail 101, transversely to the plane of the material web 23.
  • the material web 23 runs between the folding rollers 98, 99.
  • a sideways movement takes place during a phase in which a kink between adjacent blanks 20 is in the area of Folding rolls 98, 99 is located.
  • the material web 23 is folded by the sideways movement.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Advancing Webs (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Handhaben, insbesondere Fördern einer Vielzahl von Zuschnitten, die unter Bildung einer fortlaufenden Materialbahn an ihren Rändern, insbesondere Längskanten, miteinander verbunden sind, für die Herstellung von Packungen, vorzugsweise im Zusammenhang mit einer Verpackungsmaschine. Weiterhin betrifft die Erfindung eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method for handling, in particular conveying, a large number of blanks which are connected to one another at their edges, in particular longitudinal edges, to form a continuous material web, for the production of packs, preferably in connection with a packaging machine. Furthermore, the invention relates to a device for performing the method.

Der Transport des Verpackungsmaterials bereitet bei Verpakkungsmaschinen hoher Leistung ein besonderes Problem. Dies gilt vor allem bei der Verarbeitung von Zuschnitten aus dünnem Karton, zum Beispiel für die Herstellung von Klappschachteln (Hinge-Lid-Packungen) für Zigaretten. In der Praxis werden die für diesen Packungstyp besonders gestalteten Zuschnitte in Stapeln angeliefert und überwiegend von Hand in ein Magazin der Verpackungsmaschine eingefüllt. Diese Handhabung ist arbeitsaufwendig und wird der Leistungsfähigkeit moderner Verpackungsmaschinen nicht gerecht.Transporting the packaging material poses a particular problem in high-performance packaging machines. This is especially true when processing blanks from thin cardboard, for example for the production of hinged boxes (hinge-lid packs) for cigarettes. In practice, the blanks specially designed for this type of pack are delivered in stacks and mostly filled by hand into a magazine of the packaging machine. This handling is labor-intensive and does not do justice to the performance of modern packaging machines.

Aus der EP-A-0 150 889 ist eine Vorrichtung zur Förderung von Blechdosendeckeln bekannt. Hierzu sind am Umfang der Deckel angreifende Riemen als Endlosförderer vorgesehen. Die kreisrunden Deckel sind nicht miteinander verbunden.From EP-A-0 150 889 a device for conveying tin can lids is known. For this purpose, belts engaging on the circumference of the cover are provided as endless conveyors. The circular covers are not connected to each other.

Der Erfindung liegt die Aufgabe zugrunde, Maßnahmen für eine störungsfreie Handhabung, insbesondere den Transport von Zuschnitten im Zusammenhang mit einer Verpackungsmaschine vorzuschlagen, durch die der Einsatz von Bedienungspersonal auf ein Minimum verringert, gleichwohl aber die Zuschnitte mit hoher Leistung auch über längere und komplexe Transportwege gefördert werden können.The invention has for its object to propose measures for trouble-free handling, in particular the transport of blanks in connection with a packaging machine, by which the use of operating personnel is reduced to a minimum, but nevertheless promotes the blanks with high performance over longer and complex transport routes can be.

Zur Lösung dieser Aufgabe ist das erfindungsgemäße Verfahren dadurch gekennzeichnet, daß die miteinander verbundenen Zuschnitte ziehharmonikaartig bzw. zick-zack-förmig bis zur Dichtlage der Zuschnitte aneinandergefaltet sind und daß der so gebildete Zuschnittstrang unter Umlenkung in unterschiedlicher Richtung gefördert und dabei durch Förderorgane abgestützt wird, wobei die Zuschnitte im Bereich der Umlenkung parallel zu ihren Faltkanten bzw. Rändern oder quer zu diesen aufgefächert werden.To achieve this object, the method according to the invention is characterized in that the interconnected blanks are folded together like an accordion or zigzag up to the sealing position of the blanks and that the blank strand thus formed is conveyed under deflection in different directions and is thereby supported by conveying members, the blanks being fanned out in the region of the deflection parallel to their folded edges or edges or transversely to these.

Das erfindungsgemäße Verfahren zum Transport und/oder Speichern von Zuschnitten aus dünnem Karton, insbesondere für Klappschachteln, geht aus von einer fortlaufenden Materialbahn aus Zuschnitten, die an ihren Rändern über Materialreste miteinander verbunden sind. Im Bereich dieser Ränder bzw. Restverbindungen werden die Zuschnitte zick-zack-förmig gefaltet, so daß die Zuschnitte bei Aufrechterhaltung des Verbunds innerhalb der Materialbahn dicht aneinanderliegen, unter Bildung eines Zuschnittstrangs. Dieser wird in Richtung quer zur Ebene der Zuschnitte gefördert und unter Auffächern der miteinander verbundenen Zuschnitte umgelenkt. Die Umlenkungsmöglichkeit ist von Bedeutung, da nur auf diese Weise eine den Erfordernissen entsprechende Förderung möglich ist.The method according to the invention for transporting and / or storing blanks made of thin cardboard, in particular for hinged boxes, is based on a continuous material web composed of blanks which are connected to one another at their edges via material residues. In the area of these edges or remaining connections, the blanks are folded in a zigzag shape, so that the blanks lie close to one another while maintaining the bond within the material web, forming a blank strand. This is conveyed in the direction transverse to the level of the blanks and diverted under fanning out of the blanks connected to one another. The possibility of redirection is important, since this is the only way to provide funding that meets the requirements.

Bei dem erfindungsgemäßen Verfahren wird der Zuschnittstrang auch im Bereich von geradlinigen Förderstrecken (zeitweilig) aufgefächert. Dadurch können Abschnitte unterschiedlicher Speicherkapazität an Zuschnitten gebildet werden.In the method according to the invention, the cutting strand is also fanned out (temporarily) in the area of straight conveyor lines. This enables sections of different storage capacity to be formed on blanks.

Die erfindungsgemäße Vorrichtung zur Handhabung, insbesondere zum Fördern und Speichern von Zuschnitten, die unter Bildung eines Zuschnittstrangs an ihren Rändern zu einer fortlaufenden Materialbahn miteinander verbunden und zick-zack-förmig bis zur Dichtlage aneinander gefaltet sind, weist als Förderorgane angetriebene Förderbänder auf, die durchgängig an wenigstens zwei einander gegenüberliegenden Seiten des Zuschnittstrangs zur Führung desselben angeordnet sind, und die unter Mitnahme des Zuschnittstrangs an jeweils zugekehrten Längskanten und/oder Querkanten desselben unter Reib- und/oder Formschluß anliegen, wobei im Bereich von Umlenkungen eines der Förderbänder innenseitig des Zuschnittstrangs und im Bereich von horizontalen Förderstrecken an der Unterseite vorgesehen ist und wobei die Förderbänder in mehrere, unmittelbar aneinander anschließende Bandabschnitte unterteilt sind, wobei Umlenkrollen für aneinander anschließende Förderbänder auf derselben Achse angeordnet sind.The device according to the invention for handling, in particular for conveying and storing blanks, which are joined together at their edges to form a continuous strand of material and folded together in a zigzag shape to the sealing position, has driven conveyor belts as conveying members which are continuous are arranged on at least two opposite sides of the cutting strand for guiding the same, and which, while taking the cutting strand with them, bear against respectively facing longitudinal edges and / or transverse edges thereof with frictional and / or positive locking, with one of the conveyor belts on the inside of the cutting strand and is provided in the area of horizontal conveyor lines on the underside and wherein the conveyor belts are divided into a plurality of directly adjoining belt sections, with deflection rollers for adjoining conveyor belts on the same axis e are arranged.

Die zick-zack-förmig gefalteten, überwiegend eng aneinanderliegenden Zuschnitte der Materialbahn werden im überwiegenden Bereich einer Transport- bzw. Speicherstrecke durch Förderbänder an gegenüberliegenden Seiten erfaßt und transportiert. Die Förderbänder sind in besonderer Weise ausgebildet, nämlich mit einer elastischen, weichen Auflage, in die die Kanten, insbesondere Faltkanten der Zuschnitte leicht eingedrückt werden unter Verformung der Auflage. Dadurch sind Relativverschiebungen der Zuschnitte bzw. der Faltkanten gegenüber den Förderbändern ausgeschlossen.The zigzag-shaped, predominantly closely spaced blanks of the material web are captured and transported in the predominant area of a transport or storage section by conveyor belts on opposite sides. The conveyor belts are designed in a special way, namely with an elastic, soft support, into which the edges, in particular folded edges of the blanks, are slightly pressed in, deforming the support. As a result, relative displacements of the blanks or of the folded edges with respect to the conveyor belts are excluded.

Im Bereich von Umlenkstellen der Materialbahn bzw. des Zuschnittstrangs werden die Zuschnitte strahlenförmig aufgefächert und dadurch umgelenkt, vorzugsweise in einem Winkel von 90°. Die quer zur Förderrichtung sich erstreckenden freien Kanten der Zuschnitte werden im Bereich der Umlenkung durch eine Außenführung abgestützt und auf insbesondere regelmäßigen Abstand voneinander gehalten. Die Abstützung ist erfindungsgemäß ein entsprechend umgelenktes Umlenk-Förderband. Innenseitig ist im Bereich der Umlenkung ebenfalls eine Abstützung zur Sicherung der Formation des Zuschnittstrangs vorgesehen, und zwar je nach Art der Umlenkung eine Umlenkwalze für das innenseitige Förderband oder eine besondere Formwalze.In the area of deflection points of the material web or of the blank strand, the blanks are fanned out in the form of a beam and thereby deflected, preferably at an angle of 90 °. The free edges of the blanks extending transversely to the conveying direction are supported in the region of the deflection by an external guide and are kept at a regular distance from one another in particular. According to the invention, the support is a correspondingly deflected deflection conveyor belt. Inside is also in the area of the deflection a support is provided to secure the formation of the blank strand, depending on the type of deflection, a deflection roller for the inside conveyor belt or a special form roller.

Der erfindungsgemäße Transport von Zuschnitten ermöglicht in optimaler Weise die Bildung von Zuschnitt-Speichern. Eine längere Förderstrecke mit in Dichtlage nebeneinander angeordneten Zuschnitten ergibt eine hohe Speicherkapazität. Beim Abbau des Speichers werden die Zuschnitte (zeitweilig) in einen größeren Abstand voneinander gebracht.The transport of blanks according to the invention optimally enables the formation of blank memories. A longer conveyor line with blanks arranged next to one another in a sealed position results in a high storage capacity. When the storage tank is dismantled, the blanks are (temporarily) brought apart from one another.

Besonders vorteilhaft ist die Ausbildung eines Speichers, bei dem die Speicherstrecke in bezug auf die wirksame Länge veränderlich ist. Hierzu sind Förderbänder zum Transport der Zuschnitte verstellbar angeordnet, derart, daß die wirksame Förderstrecke derselben, nämlich die Länge eines Fördertrums, veränderbar ist.It is particularly advantageous to design a memory in which the storage distance can be varied with respect to the effective length. For this purpose, conveyor belts for transporting the blanks are arranged so that the effective conveying path thereof, namely the length of a conveyor strand, can be changed.

Schließlich befaßt sich die Erfindung mit der Einführung der Zuschnitte bzw. der Materialbahn in die Zick-Zack-Lage der Zuschnitte. Hierfür ist erfindungsgemäß ein Knickorgan vorgesehen, welches aufgrund hin- und hergehender Bewegung das Einfalten der in gestreckter Position zugeführten Materialbahn bewirkt. Diese läuft in ein sich trichterförmig erweiterndes Aufnahmestück ein, welches seitlich durch divergierende Förderbänder begrenzt ist. Im Anschluß an das Aufnahmestück beginnt die Förderstrecke für die gefaltete Materialbahn.Finally, the invention is concerned with the introduction of the blanks or the material web into the zigzag position of the blanks. For this purpose, a folding element is provided according to the invention, which causes the material web fed in the extended position to fold in due to the reciprocating movement. This runs into a funnel-shaped receiving piece, which is laterally limited by divergent conveyor belts. The conveyor section for the folded material web begins after the receiving piece.

Weitere Merkmale der Erfindung betreffen die Ausbildung der Organe zum Fördern, Umlenken und sonstigen Handhaben des Zuschnittstrangs, auf Einrichtungen für die Bildung und den Abbau von Speicherabschnitten sowie auf die Bildung einer zick-zack-förmig gefalteten Materialbahn aus einer Strecklage derselben. Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnungen näher erläutert. Es zeigt:

Fig. 1
den beispielhaften Verlauf eines Zuschnittstrangs mit mehreren Ablenkungen in perspektivischer Darstellung,
Fig. 2
einen Abschnitt einer Vorrichtung zum Fördern und Umlenken des Zuschnittstrangs aus zick-zack-förmig gefalteter Materialbahn in Seitenansicht,
Fig. 3
eine Darstellung entsprechend Fig. 2 bei einer Umlenkung in anderer Richtung,
Fig. 4
einen Förderabschnitt der Vorrichtung mit variablen Zuschnitt-Speicher in Seitenansicht,
Fig. 5
einen Ausschitt V in Fig. 2 bei stark vergrößertem Maßstab,
Fig. 6
einen Vertikalschnitt durch einen Förderbereich für die Zuschnitte gemäß Schnittebene VI - VI in Fig. 2,
Fig. 7
einen entsprechenden Vertikalschnitt in der Ebene VII - VII der Fig. 3,
Fig. 8
einen Querschnitt VIII - VIII in Fig. 4,
Fig. 9
einen Querschnitt IX - IX in Fig. 4,
Fig. 10
einen Querschnitt X - X in Fig. 4,
Fig. 11
eine Einzelheit der Vorrichtung im Bereich der Aufnahme einer Materialbahn und der Bildung einer zick-zack-förmigen Formation in Seitenansicht,
Fig. 12
einen Vertikalschnitt zu der Einzelheit gem. Fig. 11 in der Schnittebene XII - XII.
Further features of the invention relate to the formation of the organs for conveying, deflecting and other handling of the blank strand, to devices for the formation and the dismantling of storage sections and to the formation of a zig-zag folded material web from a stretched position thereof. Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. It shows:
Fig. 1
the exemplary course of a cutting strand with several deflections in a perspective view,
Fig. 2
1 shows a section of a device for conveying and deflecting the blank strand made of a zig-zag folded material web, in a side view,
Fig. 3
2 with a deflection in another direction,
Fig. 4
a conveyor section of the device with variable blank storage in side view,
Fig. 5
a section V in FIG. 2 on a greatly enlarged scale,
Fig. 6
3 shows a vertical section through a conveying area for the blanks according to section plane VI-VI in FIG. 2,
Fig. 7
a corresponding vertical section in the plane VII - VII of Fig. 3,
Fig. 8
a cross section VIII - VIII in Fig. 4,
Fig. 9
a cross section IX - IX in Fig. 4,
Fig. 10
3 shows a cross section X - X in FIG. 4,
Fig. 11
a detail of the device in the area of receiving a material web and the formation of a zigzag formation in side view,
Fig. 12
a vertical section to the detail acc. Fig. 11 in the sectional plane XII - XII.

Die in den Zeichnungen in Einzelheiten dargestellte Einrichtung zum Handhaben, insbesondere Fördern von Zuschnitten 20 kann mit einer Verpackungsmaschine (nicht gezeigt) im Zusammenhang stehen, aber auch mit einer Station zur Be- und Entladung von Behältern, Paletten etc. zum weitläufigen Transport von Verpackungsmaterial. Die Zuschnitte 20 sind bei dem vorliegenden Ausführungsbeispiel besonders gestaltet. Es handelt sich dabei um Zuschnitte 20 für die Herstellung von Klappschachteln, insbesondere zur Aufnahme von Zigaretten. Die hierfür verwendeten Zuschnitte 20 haben einen besonderen, charakteristischen Aufbau, wie beispielsweise in DE-A 37 16 897 dargestellt und beschrieben. Die Zuschnitte sind im Bereich von Längskanten 21, 22 miteinander verbunden unter Bildung einer fortlaufenden Materialbahn 23.The device for handling, in particular conveying blanks 20, shown in detail in the drawings, can be connected to a packaging machine (not shown), but also to a station for loading and unloading containers, pallets, etc. for the extensive transport of packaging material. The blanks 20 are specially designed in the present exemplary embodiment. These are blanks 20 for the production of hinged boxes, in particular for holding cigarettes. The blanks 20 used for this have a special, characteristic structure, as shown and described for example in DE-A 37 16 897. The blanks are connected to one another in the region of longitudinal edges 21, 22 to form a continuous material web 23.

Für den Transport, die Speicherung etc. der Zuschnitte 20 bleibt der Zusammenhang innerhalb der Materialbahn 23 erhalten. Im Bereich der Längskanten 21, 22 ist die Materialbahn 23 zick-zack-förmig gefaltet (z.B. Fig. 4, mittlerer Bereich). Die so gefaltete Materialbahn 23 bildet einen fortlaufenden Zuschnittstrang 24 aus gefächerten oder bis zur Dichtlage nebeneinander angeordneten Zuschnitten 20. Der Zuschnittstrang 24 ist, wie insbesondere aus Fig. 1 ersichtlich, in alle Richtungen umlenkbar, wobei die rechteckigen, länglichen Zuschnitte 20 jeweils in Querrichtung (Fig. 2) oder in Längsrichtung (Fig. 3) zur Umlenkung des Zuschnittstrangs 24 aufgefächert werden.The connection within the material web 23 is retained for the transport, storage, etc. of the blanks 20. In the area of the longitudinal edges 21, 22, the material web 23 is folded in a zigzag shape (e.g. FIG. 4, middle area). The material web 23 folded in this way forms a continuous blank strand 24 of fanned blanks or blanks 20 arranged side by side up to the sealing layer. The blank strand 24, as can be seen in particular from FIG. 1, can be deflected in all directions, the rectangular, elongated blanks 20 each in the transverse direction ( Fig. 2) or in the longitudinal direction (Fig. 3) for deflecting the cutting strand 24.

Die hier gezeigten Zuschnitte 20 haben den für Klappschachteln typischen Aufbau. Im Bereich von Querkanten 25, 26 sind die Zuschnitte 20 besonders gestaltet. Die Querkante 25 begrenzt einen sich im mittleren Bereich des Zuschnitts 20 erstreckenden Deckelinnenlappen 27, der bei der fertigen Klappschachtel an der Innenseite einer Deckelvorderwand 28 anliegt. Der Deckelinnenlappen 27 bildet einen seitlich vorstehenden Vorsprung der Materialbahn 23.The blanks 20 shown here have the structure typical of hinged boxes. In the area of transverse edges 25, 26, the blanks 20 are specially designed. The transverse edge 25 is limited in the central area of the blank 20 extending inner lid tab 27, which rests on the inside of a lid front wall 28 in the finished hinged box. The inner lid tab 27 forms a laterally projecting projection of the material web 23.

Auf der gegenüberliegenden Seite ist die Querkante 26 im Bereich einer Vorderwand 29 des Zuschnitts 20 parallel zur Längsachse der Materialbahn 23 gerichtet. An den Seiten schließen schräggerichtete Schenkel 30 im Bereich von Seitenlappen 31, 32 des Zuschnitts an.On the opposite side, the transverse edge 26 is directed parallel to the longitudinal axis of the material web 23 in the region of a front wall 29 of the blank 20. Oblique legs 30 adjoin the sides in the region of side tabs 31, 32 of the blank.

Die Zuschnitte 20 sind in der in DE-A 37 16 897 beschriebenen Weise lediglich in einem Teilbereich der Längskanten 21, 22 über Materialstege 33 miteinander verbunden. Diese erstrecken sich im Bereich von inneren Seitenlappen 34, 35 sowie im Bereich von hierzu benachbarten inneren Deckelseitenlappen 36, 37. Im Bereich der Materialstege 33 wird die Materialbahn 23 bei der zick-zack-förmigen Formation umgeknickt unter Bildung einer Faltkante 38.The blanks 20 are connected in the manner described in DE-A 37 16 897 only in a partial area of the longitudinal edges 21, 22 via material webs 33. These extend in the area of inner side tabs 34, 35 and in the area of inner lid side tabs 36, 37 adjacent thereto. In the area of the material webs 33, the material web 23 is folded over in the zigzag-shaped formation to form a folded edge 38.

Die Zuschnitte 20 liegen innerhalb des Zuschnittstrangs 24 überwiegend in Dichtlage zueinander. Zur Stabilisierung der Zuschnitt-Formation und zum vorzugsweise kontinuierlichen Transport des Zuschnittstrangs 24 ist dieser im Bereich der Faltkanten 38, also an den Längskanten 21, 22, an einem Endlosförderer abgestützt. Dieser besteht hier aus Förderbändern 39, 40 und 41. Diese sind in besonderer Weise ausgebildet, nämlich mit einem Gurt 42, der aus einem zugfesten Trägerband 43 und einer elastischen, weichen Auflage 44 besteht. Letztere ist den Zuschnitten 20 bzw. den Faltkanten 38 zugekehrt. Diese dringen geringfügig unter entsprechender Verformung in die elastische Auflage 44 ein. Dadurch sind die Zuschnitte 20 gegen Relativverschiebung gesichert. Der Zuschnittstrang 24 wird rutschfrei durch die Förderbänder 39, 40 und 41 mitgenommen. Die jeweilige Formation der Zuschnitte 20 innerhalb des Zuschnittstrangs 24 ist fixiert.The blanks 20 are predominantly in a sealed position within the blank strand 24. To stabilize the blank formation and for preferably continuously transporting the blank strand 24, the blank strand 24 is supported on an endless conveyor in the region of the folded edges 38, that is to say on the longitudinal edges 21, 22. This consists of conveyor belts 39, 40 and 41. These are designed in a special way, namely with a belt 42 which consists of a tension-resistant carrier belt 43 and an elastic, soft support 44. The latter faces the blanks 20 or the folded edges 38. These penetrate slightly into the elastic support 44 with corresponding deformation. As a result, the blanks 20 are secured against relative displacement. The cutting strand 24 is carried along by the conveyor belts 39, 40 and 41 without slipping. The respective formation of the blanks 20 within the blank strand 24 is fixed.

Der Zuschnittstrang 24 wird zweckmäßigerweise über die volle Länge ununterbrochen durch Förderbänder 39, 40 und 41 oder andere Führungs- und Förderorgane an zwei einander gegenüberliegenden Seiten abgestützt. Im Bereich eine geradlinigen Förderstrecke für den Zuschnittstrang 24 wird dieser an den sich zu beiden Seiten erstreckenden Faltkanten 38 - korrespondierend mit den Längskanten 21, 22 - jeweils durch den fördernden Gurt 42 eines Förderbandes 39, 40 und 41 erfaßt. Die Förderbänder verlaufen zweckmäßigerweise im mittleren Bereich des Zuschnittstrangs 24 bzw. der Zuschnitte 20 (z.B. Fig. 6). Die Förderbänder 39, 40 und 41 haben eine geringere Breite als die des Zuschnittstrangs 24. Es können dadurch Förderbänder versetzt zur Mittelebene des Zuschnittstrangs 24 angeordnet sein. Dadurch ist es moglich, die Förderbänder 39, 40 und 41 als Bandabschnitte auszubilden, wobei aufeinanderfolgende Bandabschnitte im Umlenkbereich gleichachsig gelagert sein können. Jeweils einer der im Bereich des Zuschnittstrangs 24 einander gegenüberliegenden Förderbänder 39, 40 bzw. 40, 41 ist angetrieben.The cutting strand 24 is expediently continuously supported over the full length by conveyor belts 39, 40 and 41 or other guiding and conveying members on two opposite sides. In the area of a rectilinear conveying path for the cut strand 24, this is grasped by the conveying belt 42 of a conveyor belt 39, 40 and 41 on the folding edges 38 extending on both sides, corresponding to the longitudinal edges 21, 22. The conveyor belts expediently run in the central region of the blank strand 24 or the blank 20 (e.g. FIG. 6). The conveyor belts 39, 40 and 41 have a smaller width than that of the blank strand 24. As a result, conveyor belts can be arranged offset to the central plane of the blank strand 24. This makes it possible to design the conveyor belts 39, 40 and 41 as belt sections, it being possible for successive belt sections to be supported coaxially in the deflection area. In each case one of the conveyor belts 39, 40 or 40, 41 lying opposite one another in the region of the cutting strand 24 is driven.

Wie insbesondere aus Fig. 6 ersichtlich, liegen die Gurte 42 der Förderbänder 39 und 40 im Bereich der inneren Seitenlappen 34, 35 an den Zuschnitten 20 an. Die Förderbänder 39, 40 sind am Beginn einer geradlinigen Förderstrecke umgelenkt, und zwar über eine äußere Umlenkrolle 45 für das obere Förderband 39 und über eine innenseitige bzw. untere Umlenkrolle 46. Das untere Förderband 40 ist bei dieser Ausführung angetrieben, während das obere, gegenüberliegende Förderband 39 ohne eigenen Antrieb frei mitläuft. Zu diesem Zweck ist die Umlenkrolle 45 drehbar gelagert, und zwar auf einer Antriebswelle 47 für Umlenkrollen 48, 49 eines anschließenden Abschnitts von Förderbändern.As can be seen in particular from FIG. 6, the belts 42 of the conveyor belts 39 and 40 lie against the blanks 20 in the region of the inner side tabs 34, 35. The conveyor belts 39, 40 are deflected at the beginning of a rectilinear conveying path, specifically via an outer deflecting roller 45 for the upper conveyor belt 39 and via an inner or lower deflecting roller 46. The lower conveyor belt 40 is driven in this embodiment, while the upper, opposite one Conveyor belt 39 runs freely without its own drive. For this purpose, the deflection roller 45 is rotatably mounted, specifically on a drive shaft 47 for deflection rollers 48, 49 of a subsequent section of conveyor belts.

Von besonderer Bedeutung ist die Gestaltung von Förder- und Stützorganen im Bereich der Umlenkung der Materialbahn 23. Die Umlenkung kann alternativ über die kurze Abmessung (Breite) der Zuschnitte 20 erfolgen (Ausführungsbeispiel der Fig. 2) oder über die Längsabmessung (Fig. 3). Im Bereich der Umlenkung werden die Zuschnitte 20 aufgefächert. Bei der Umlenkung über die kürzere Abmessung sind die Faltkanten 38 an der radial innenliegenden Seite mit einem kürzeren Abstand und an der radial außenliegenden Seite mit einem entsprechend der größeren Bogenlänge mit einem größeren Abstand voneinander angeordnet.The design of conveying and support members in the region of the deflection of the material web 23 is of particular importance. The deflection can alternatively take place via the short dimension (width) of the blanks 20 (exemplary embodiment 2) or over the longitudinal dimension (Fig. 3). The blanks 20 are fanned out in the region of the deflection. When deflecting over the shorter dimension, the folded edges 38 are arranged at a shorter distance on the radially inner side and at a greater distance from one another on the radially outer side with a correspondingly greater arc length.

Um die zuletzt genannte Umlenkung zu bewerkstelligen, ist das innenseitig verlaufende Förderband 40 über die Umlenkstelle hinweggeführt, wobei der fördernde, am Zuschnittstrang 24 anliegende Gurt 42 über die Umlenkrolle 46 hinwegführt aus einer horizontalen Förderrichtung in eine vertikale Förderrichtung. Der rücklaufende Gurt des Förderbandes 40 wird über eine versetzt und parallel zur Umlenkrolle 46 angeordnete entsprechende Umlenkrolle 51 geleitet.In order to accomplish the last-mentioned deflection, the conveyor belt 40 running on the inside is led over the deflection point, the conveying belt 42 resting on the cutting strand 24 leading over the deflection roller 46 from a horizontal conveying direction into a vertical conveying direction. The returning belt of the conveyor belt 40 is guided over a corresponding deflection roller 51 which is offset and arranged parallel to the deflection roller 46.

Im äußeren Bereich endet das horizontale Förderband 39 vor der Umlenkung. Im vertikalen Förderbereich schließt das Förderband 41 an den Umlenkbereich an.The horizontal conveyor belt 39 ends in the outer region before the deflection. In the vertical conveying area, the conveyor belt 41 connects to the deflection area.

Zur Führung des auf der Außenseite stark gefächerten Zuschnittstrangs 24 im Bereich der Umlenkung ist hier ein besonderes Umlenkband 52 vorgesehen. Dieses angetriebene Förderorgan ist in gleicher Weise ausgebildet wie die Förderbänder 39, 40 und 41. Wie aus Fig. 6 ersichtlich handelt es sich um zwei Umlenkbänder 52, die zu beiden Seiten der Förderbänder 39 und 41 laufen. Der Antrieb erfolgt im Bereich des Übergangs zum horizontalen Förderabschnitt (Förderband 39). Die beiden Umlenkrollen 49, 50 sind auf einer drehbar angetriebenen Welle gelagert. Die Umlenkung an der gegenüberliegenden Seite erfolgt in analoger Weise über (leerlaufende) Umlenkrollen 53.A special deflection belt 52 is provided here for guiding the blank strand 24, which is strongly fanned on the outside, in the region of the deflection. This driven conveyor element is designed in the same way as the conveyor belts 39, 40 and 41. As can be seen from FIG. 6, there are two deflection belts 52 which run on both sides of the conveyor belts 39 and 41. The drive takes place in the area of the transition to the horizontal conveyor section (conveyor belt 39). The two deflection rollers 49, 50 are mounted on a rotatably driven shaft. The deflection on the opposite side is carried out in an analogous manner via (idle) deflection rollers 53.

Die Umlenkbänder 52 sind so ausgebildet bzw. bemessen, daß der fördernde Gurt 42 der bogenförmigen Kontur des Zuschnittstrangs 24 im Bereich der Umlenkung folgt. Durch die geschilderte Ausbildung des Gurts 42 wird die regelmäßige Fächerformation der Zuschnitte 20 innerhalb des Zuschnittstrangs 24 auch hier fixiert. Die Fächerbildung entsteht automatisch beim Übergang der Materialbahn 23 in den Bogen. Zu diesem Zweck ist das Umlenkband 52 bzw. dessen fördernder Gurt mit einer größeren Geschwindigkeit angetrieben als diejenige der Förderbänder 39, 40 und 41.The deflection belts 52 are designed or dimensioned such that the conveying belt 42 follows the arcuate contour of the blank strand 24 in the region of the deflection. Due to the described design of the belt 42, the regular Fan formation of the blanks 20 also fixed here within the blank strand 24. The fan formation occurs automatically at the transition of the material web 23 into the sheet. For this purpose, the deflection belt 52 or its conveyor belt is driven at a higher speed than that of the conveyor belts 39, 40 and 41.

Die in Fig. 3 gezeigte Umlenkung über die längere Abmessung der Zuschnitte 20 ist in ähnlicher Weise aufgebaut. Allerdings enden horizontal bzw. vertikal fördernde Förderbänder für den Zuschnittstrang 24 am Beginn bzw. am Ende des Umlenkbereichs. Innerhalb desselben werden die Zuschnitte 20 durch einen außen anliegenden Umlenkförderer 54 transportiert. Dieser ist angetrieben, und zwar im vorliegenden Falle über eine dem horizontalen Förderbereich zugekehrte Umlenkrolle 55. Diese sitzt auf einer angetriebenen Welle 56. Eine gegenüberliegende, dem vertikalen Förderbereich zugekehrte Umlenkrolle 57 läuft ohne Antrieb leer. Der Umlenkförderer 54 bzw. dessen fördernder Gurt 42 liegt bogenförmig an den außenliegenden Kanten des Zuschnittstrangs 24 an, nämlich an den Querkanten 25, die zugleich die freien Randkanten des Deckelinnenlappens 27 sind. Der Umlenkförderer 54 hat hier die Breite des Deckelinnenlappens 27.The deflection shown in FIG. 3 over the longer dimension of the blanks 20 is constructed in a similar manner. However, horizontally or vertically conveying conveyor belts for the cut strand 24 end at the beginning or at the end of the deflection area. Within the same, the blanks 20 are transported by an externally arranged deflection conveyor 54. This is driven, in the present case via a deflection roller 55 facing the horizontal conveying area. This is seated on a driven shaft 56. An opposite deflection roller 57 facing the vertical conveying area runs idle without a drive. The deflection conveyor 54 or its conveying belt 42 bears in an arc shape on the outer edges of the blank strand 24, namely on the transverse edges 25, which are also the free edge edges of the inner lid tab 27. The deflection conveyor 54 here has the width of the inner lid tab 27.

Ein äußerer, rücklaufender Trum des Umlenkförderers 54 wird über Stützrollen 58 geführt.An outer, returning run of the deflection conveyor 54 is guided over support rollers 58.

Die Antriebsgeschwindigkeit des Umlenkförderers 54 ist aufgrund der größeren Bogenlänge größer als die Geschwindigkeit des Umlenkbandes 52 bei der Umlenkung gem. Fig. 2.The drive speed of the deflection conveyor 54 is greater than the speed of the deflection belt 52 during the deflection according to the larger arc length. Fig. 2.

Innenseitig ist der Zuschnittstrang 24 bei der Umlenkung gemäß Fig. 3 nur geringfügig gefächert. Zur Stützung und Umlenkung des Zuschnittstrangs 24 ist hier lediglich eine freidrehbar gelagerte, also leerlaufende Formrolle 59. Diese ist drehbar auf einem Tragbolzen 60 gelagert. Die Kontur der Formrolle 59 entspricht der Kontur der Querkante 26 mit den abgewinkelten Schenkeln 30. Die Zuschnitte 20 sind demnach formschlüssig auf der Formrolle 59 abgestützt.On the inside, the blank strand 24 is only slightly fanned out in the deflection according to FIG. 3. To support and redirect the cutting strand 24, there is only one freely rotatable, that is to say idling, form roller 59, which is rotatably mounted on a support pin 60. The contour of the form roller 59 corresponds to the contour of the transverse edge 26 with the angled legs 30. The blanks 20 are therefore supported in a form-fitting manner on the form roller 59.

In den an die Umlenkstelle gem. Fig. 3 anschließenden horizontalen und vertikalen Förderbereichen sind Förderorgane für den Zuschnittstrang 24 im Bereich der Längskanten 21, 22 angeordnet. Der vertikale Förderstrick ist hier ein breiteres Förderband 61 zugeordnet. Die horizontale Förderstrecke weist zwei in geringem Abstand voneinander angeordnete Förderbänder 62, 63 zu beiden Seiten des Zuschnittstrangs 24 auf. Diese sind über gesonderte, auf derselben Achse gelagerte Umlenkrollen 64, 65 geführt. Das einzelne Förderband 61 läuft über eine Umlenkrolle 66.According to the deflection point. 3 subsequent horizontal and vertical conveying areas, conveying members for the blank strand 24 are arranged in the area of the longitudinal edges 21, 22. The vertical conveyor rope is assigned a wider conveyor belt 61 here. The horizontal conveyor line has two conveyor belts 62, 63 arranged at a short distance from one another on both sides of the blank strand 24. These are guided over separate deflection rollers 64, 65 mounted on the same axis. The individual conveyor belt 61 runs over a deflection roller 66.

Der Zuschnittstrang 24 wird im Bereich der freien, nicht miteinander verbundenen Querkanten 25, 26 durch Leitorgane geführt und geschützt. Im Bereich der Querkante 25, also des Deckelinnenlappens 27, ist ein Führungssteg 67 mit geringem Abstand von dem Zuschnittstrang 24 angeordnet. Auf der gegenüberliegenden Seite befindet sich eine Wange 68 eines Maschinengestells. Diese bildet eine vorstehende Führungsrippe 69 im Bereich der durch die Querkante 26 gebildete Vertiefung. Die vorstehenden spitzwinkligen Ecken aufgrund der Schenkel 30 liegen hier in einem geschützten Bereich aufgrund von Vertiefungen in der Wange 68 zu beiden Seiten der Führungsrippe 69.The cutting strand 24 is guided and protected in the area of the free, non-interconnected transverse edges 25, 26 by guide elements. In the region of the transverse edge 25, that is to say the inner lid flap 27, a guide web 67 is arranged at a short distance from the cutting strand 24. A cheek 68 of a machine frame is located on the opposite side. This forms a protruding guide rib 69 in the region of the depression formed by the transverse edge 26. The projecting acute-angled corners due to the legs 30 lie here in a protected area due to depressions in the cheek 68 on both sides of the guide rib 69.

Im Bereich besonderer Förderstrecken können zusätzliche Führungsorgane für den Zuschnittstrang 24 angeordnet sein, wie Fig. 9 und 10 beispielhaft zeigen. Im Bereich von an die Querkanten 25 angrenzenden Abschnitten der Längskanten 21 und 22 sind Leitschienen 70 zu beiden Seiten des Zuschnittstrangs 24 angeordnet und über einen Tragbügel 71 mit den Führungsstegen 67 verbunden.Additional guide elements for the cutting strand 24 can be arranged in the area of special conveyor lines, as shown by way of example in FIGS. 9 and 10. In the region of sections of the longitudinal edges 21 and 22 adjoining the transverse edges 25, guide rails 70 are arranged on both sides of the cutting strand 24 and connected to the guide webs 67 via a support bracket 71.

Auch der gegenüberliegende Bereich des Zuschnittstrangs 24 weist entsprechende Leitorgane auf, nämlich Leitstege 72 im Bereich der Längskanten 21, 22. Die Leitstege 72 sind mit der Wange 68 verbunden.The opposite area of the cut strand 24 also has corresponding guide elements, namely guide bars 72 in the area of the longitudinal edges 21, 22. The guide bars 72 are connected to the cheek 68.

Die Wange 68 als Teil eines im übrigen nicht gezeigten Maschinengestells ist Tragorgan für die Umlenkrollen der Förderbänder wie auch der Führungsstege 67. Zur Aufnahme der (frei drehbaren) Umlenkrollen für die Förderbänder sind an der Wange 68 frei abstehende Tragbolzen 73 angeordnet. Die Führungsstege 67 sind über Tragbügel 74 mit der Wange 68 verbunden. Die Tragbolzen 73 können, soweit erforderlich, an abgewinkelten Tragarmen 75 angebracht sein, die ihrerseits mit der Wange 68 verbunden sind.The cheek 68 as part of a machine frame (not shown) is a supporting element for the deflection rollers of the conveyor belts and also the guide webs 67. To accommodate the (freely rotatable) deflection rollers for the conveyor belts, freely projecting support bolts 73 are arranged on the cheek 68. The guide webs 67 are connected to the cheek 68 via support brackets 74. The support bolts 73 can, if necessary, be attached to angled support arms 75, which in turn are connected to the cheek 68.

Die Gestaltung des Zuschnittstrangs 24 ermöglicht die Bildung von Zuschnittspeichern bzw. Speicherstrecken. Diese werden im Bereich von horizontalen oder vertikalen Förderstrecken gebildet. Fig. 4 zeigt eine Speicherstrecke 76 innerhalb eines horizontalen Förderstrangs. Das Konzept einer solchen Speicherstrecke besteht darin, die Dichtlage der Zuschnitte 20 innerhalb des Zuschnittstrangs 24 (zeitweilig) aufzufächern, nämlich beim Abbau der Speicherstrecke. Während der normalen Transportphase werden die Zuschnitte 20 auch im Bereich der Speicherstrecke 76 in Dichtlage gefördert. Bei zeitweilig unterbrochener oder vermindeter Zufuhr des Zuschnittstrangs 24 wird die Speicherstrecke 76 abgebaut, indem die Zuschnitte in die aufgefächerte Position gebracht werden (Fig. 4). Dadurch ist die Abförderung von Zuschnitten 20 in Dichtlage an der Austrittsseite der Speicherstrecke 76 (in Fig. 4 rechts) möglich, auch wenn eintrittsseitig keine Zuschnitte 20 zugeführt werden. Eine solche Unterbrechung der Zuschnittzufuhr ist beispielsweise bei einem Wechsel von Paletten oder anderen Transportorganen gegeben, wenn die Zuschnitte 20 bzw. die Materialbahn 23 stapelweise oder als Bobine zur Verfügung gestellt wird.The design of the blank strand 24 enables the formation of blank memories or storage sections. These are formed in the area of horizontal or vertical conveyor lines. 4 shows a storage path 76 within a horizontal conveyor line. The concept of such a storage section is to fan out (temporarily) the sealing position of the blanks 20 within the cutting strand 24, namely when the storage section is being dismantled. During the normal transport phase, the blanks 20 are also conveyed in a sealed position in the area of the storage path 76. If the supply of the cut strand 24 is temporarily interrupted or reduced, the storage section 76 is removed by bringing the cuts into the fanned out position (FIG. 4). This enables the removal of blanks 20 in the sealing position on the outlet side of the storage section 76 (on the right in FIG. 4), even if no blanks 20 are fed in on the inlet side. Such an interruption in the supply of blanks occurs, for example, when changing pallets or other transport elements when the blanks 20 or the material web 23 are made available in stacks or as a bobbin.

Der Speicherstrecke 76 sind zwei voneinander unabhängig arbeitende und ausgebildete Förderbänder 77 und 78 zugeordnet. Durch das in der bereits beschriebenen Weise ausgebildete Förderband 77 wird der Zuschnittstrang 24 in den Bereich der an das Förderband 77 anschließenden Speicherstrecke 76 eingefördert. Zum Förderband 78, welches den Zuschnittstrang 24 aus der Speicherstrecke 76 abfördert, besteht ein größerer Abstand, entsprechend der Länge der Speicherstrecke 76.The storage path 76 is assigned two conveyor belts 77 and 78 which work and are formed independently of one another. By means of the conveyor belt 77 designed in the manner already described, the cut strand 24 is fed into the region of the storage section 76 adjoining the conveyor belt 77. There is a greater distance from the conveyor belt 78, which conveys the cut strand 24 out of the storage section 76, corresponding to the length of the storage section 76.

Das Förderband 78 wird an dem der Speicherstrecke 76 zugekehrten Ende über größer dimensionierte Umlenkrollen 79 geführt. Die beiden Umlenkrollen 79 der einander oberhalb und unterhalb des Zuschnittstrangs 24 gegenüberliegenden Förderbänder 78 sind in der Förderebene des Zuschnittstrangs 24 hin- und herbewegbar, bei dem in Fig. 4 gezeigten Ausführungsbeispiel aus der in ausgezogenen Linien (rechts) gezeigten Stellung in die strichpunktiert gezeichnete Position. Die in ausgezogenen Linien gezeigte Stellung entspricht dem Abbau der Speicherstrecke 76. Der Speicher ist durch Auffächern der Zuschnitte 20 innerhalb der Speicherstrecke 76 abgebaut. Durch Zufuhr von Material (Zuschnittstrang 24) durch das Förderband 77 muß jetzt der Speicher wieder aufgebaut werden, bis im Bereich der Speicherstrecke 76 die Zuschnitte in Dichtlage orientiert sind. Während dieser Auffüllung der Speicherstrecke 76 kehrt das Förderband 78 durch Verschieben der Umlenkrolle 79 in die strichpunktierte Stellung zurück. Diese entspricht der Normalstellung.The conveyor belt 78 is guided at the end facing the storage section 76 via larger-dimensioned deflection rollers 79. The two deflection rollers 79 of the conveyor belts 78 opposite one another above and below the cutting strand 24 can be moved back and forth in the conveying plane of the cutting strand 24, in the embodiment shown in FIG. 4 from the position shown in solid lines (right) to the position shown in broken lines . The position shown in solid lines corresponds to the dismantling of the storage section 76. The storage is dismantled by fanning out the blanks 20 within the storage section 76. By supplying material (cutting strand 24) through the conveyor belt 77, the storage must now be rebuilt until the blanks are oriented in the sealing position in the area of the storage path 76. During this filling of the storage section 76, the conveyor belt 78 returns to the dot-dash position by shifting the deflection roller 79. This corresponds to the normal position.

Zur Durchführung dieser Bewegungen des Förderbands 78 zum Abbau und Wiederauffüllen des Speichers sind die Umlenkrollen 79 an einem gemeinsamen Schlitten 80 gelagert. Dieser ist im Querschnitt U-förmig ausgebildet (Fig. 10) und mit einer (aufrechten) Tragwandung 81 auf parallelen Gleitstangen 82 verschiebbar. Der Schlitten 80 wandert mit den Umlenkrollen 79 in die beschriebenen Positionen.To carry out these movements of the conveyor belt 78 to dismantle and refill the storage, the deflection rollers 79 are mounted on a common carriage 80. This is U-shaped in cross section (FIG. 10) and can be moved with an (upright) support wall 81 on parallel slide rods 82. The carriage 80 moves with the guide rollers 79 into the positions described.

Zum Ausgleich der Längenunterschiede der Förderbänder 78 bilden diese im Bereich des Schlittens 80 eine Bandschleife 83. Zu diesem Zweck wird jedes Förderband 78 um eine erste Schleifenrolle 84 am Schlitten 80 und eine zweite, feststehende Schleifenrolle 85 am Maschinengestell bzw. an der Wange 68 geführt. Der Abstand zwischen den beiden Schleifenrollen 84, 85 wird bei der Verschiebung der Umlenkrollen 79 in die Normalstellung kleiner, entsprechend dem Abbau der Bahnschleife 83.To compensate for the differences in length of the conveyor belts 78, they form a belt loop 83 in the area of the slide 80. For this purpose, each conveyor belt 78 is guided around a first loop roller 84 on the slide 80 and a second, fixed loop roller 85 on the machine frame or on the cheek 68. The distance between the two loop rollers 84, 85 becomes smaller when the deflection rollers 79 are shifted into the normal position, corresponding to the removal of the web loop 83.

Der Zuschnittstrang 24 wird im Bereich der Speicherstrecke 76, also in einem Bereich ohne Förderbänder, durch andere Stützorgane in der jeweiligen, sich hinsichtlich der Zick-Zack-Position der Zuschnitte 20 ändernde Formation stabilisiert. Bei dem vorliegenden Ausführungsbeispiel sind oberhalb und unterhalb des Zuschnittstrangs 24 je zwei elastisch dehnbare Stützgurte 86, 87 angeordnet. Diese sind hier als Rundprofile ausgebildet. Die Stützgurte 86, 87 liegen mit Abstand voneinander an den Längskanten 21, 22 der Zuschnitte 20 an.The cutting strand 24 is stabilized in the area of the storage path 76, that is to say in an area without conveyor belts, by other support members in the respective formation which changes with respect to the zigzag position of the cuts 20. In the present exemplary embodiment, two elastically stretchable support straps 86, 87 are arranged above and below the blank strand 24. These are designed as round profiles. The support straps 86, 87 are spaced apart from one another on the longitudinal edges 21, 22 of the blanks 20.

Die Stützgurte 86, 87 sind an der Eintrittsseite der Speicherstrecke 76 fest verankert, im vorliegenden Falle mit Befestigungsbolzen 88 an der Wange 68. Die Stützgurte 86, 87 laufen über passend ausgebildete Profilrollen 89, 90. Diese sind hier gleichachsig gelagert mit Umlenkrollen 91 für die Förderbänder 77. Die Profilrollen 89, 90 sind freidrehbar auf einem Tragbolzen 73 der Umlenkrolle 91 gelagert.The support straps 86, 87 are firmly anchored on the entry side of the storage section 76, in the present case with fastening bolts 88 on the cheek 68. The support straps 86, 87 run over suitably designed profile rollers 89, 90. These are supported coaxially here with deflection rollers 91 for the Conveyor belts 77. The profile rollers 89, 90 are rotatably mounted on a support pin 73 of the deflection roller 91.

Das gegenüberliegende Ende der Stützgurte 86, 87 ist mit dem Schlitten 80 verbunden, und zwar ebenfalls über einen Befestigungsbolzen 92. Die Befestigung erfolgt hier in der Achse der Umlenkrolle 79. Die Stützgurte 86, 87 werden aus der Stützebene über profilierte Leitstücke 93 des Schlittens 80 zum Befestigungsbolzen 92 geführt.The opposite end of the support belts 86, 87 is connected to the slide 80, and also via a fastening bolt 92. The fastening here takes place in the axis of the deflection roller 79. The support belts 86, 87 are removed from the support plane via profiled guide pieces 93 of the slide 80 led to the fastening bolt 92.

Die Stützgurte 86, 87 werden beim Abbau der Speicherstrecke 76 entsprechend der Verschiebung des Förderbands 78 gedehnt bis zur Maximaldehnung gemäß Position in Fig. 4, ausgezogene Linien. Dadurch wird eine Relativbewegung der Zuschnitte 20 innerhalb der Speicherstrecke 76 gegenüber den Stützorganen, nämlich den Stützgurten 86, 87 vermieden. Die "Dehnung", nämlich Spreizung des Zuschnittstrangs 24 erfolgt in demselben Maß wie die Dehnung der Stützgurte 86, 87, so daß eine reibungsfreie Führung der zick-zack-förmig gefalteten Zuschnitte 20 in die aufgefächerte Position und zurück in die Dichtlage gegeben ist.The support belts 86, 87 are stretched when the storage section 76 is dismantled in accordance with the displacement of the conveyor belt 78 up to the maximum stretch according to the position in FIG. 4, solid lines. This prevents a relative movement of the blanks 20 within the storage path 76 with respect to the support members, namely the support belts 86, 87. The "stretching", namely spreading of the blank strand 24 takes place to the same extent as the stretching of the support belts 86, 87, so that the zigzag folded blanks 20 are guided smoothly into the fanned out position and back into the sealing position.

Während des Speicherabbaus steht das Förderband 77 still oder läuft mit einer verminderten Fördergeschwindigkeit.During the storage reduction, the conveyor belt 77 stands still or runs at a reduced conveying speed.

Ein anderes Tehma ist beispielshaft in Fig. 11 und 12 angesprochen. Es geht um die Bildung des Zuschnittstrangs 24 durch zick-zack-förmiges Falten der Materialbahn 23. Diese kann auf verschiedene Weise zur Verfügung gestellt werden, nämlich als gewickelte Bobine oder - wie in Fig. 11 und 12 gezeigt - in gefalteten Stapeln 94 auf einer Palette 95 oder dergleichen. Die Materialbahn 23 wird von den Stapeln 24 nacheinander abgezogen, und zwar durch ein Paar von Zugwalzen 96. Die Materialbahn 23 gelangt dadurch zeitweilig in Strecklage. Es folgt ein Faltorgan 97, welches die Zick-Zack-Faltung (wieder) herstellt und so den Zuschnittstrang 24 bildet, der zwischen zwei (aufrechten) Förderbändern 40, 41 abtransportiert wird.Another Tehma is addressed by way of example in FIGS. 11 and 12. It is about the formation of the blank strand 24 by zigzag-shaped folding of the material web 23. This can be provided in various ways, namely as a wound bobbin or - as shown in FIGS. 11 and 12 - in folded stacks 94 on one Pallet 95 or the like. The material web 23 is drawn off from the stacks 24 one after the other, namely by a pair of pull rollers 96. The material web 23 thereby temporarily reaches the stretched position. A folding member 97 follows, which (again) produces the zigzag folding and thus forms the cutting strand 24, which is transported away between two (upright) conveyor belts 40, 41.

Das Faltorgan 97 besteht hier aus zwei in geringem Abstand voneinander angeordneten Faltrollen 98, 99, zwischen denen die Materialbahn 23 hindurchläuft. Die Faltrollen 98, 99 sind mit einem Führungsstück 100 verbunden, welches in einer Profilschiene 101 hin- und herbewegt wird, quer zur Ebene der Materialbahn 23. Die Materialbahn 23 läuft zwischen den Faltrollen 98, 99 hindurch. Eine seitwärts Bewegung erfolgt während einer Phase, in der eine Knickstelle zwischen benachbarten Zuschnitten 20 sich im Bereich der Faltrollen 98, 99 befindet. Durch die Seitwärtsbewegung erfolgt die Faltung der Materialbahn 23.The folding member 97 here consists of two folding rollers 98, 99 arranged at a short distance from one another, between which the material web 23 runs. The folding rollers 98, 99 are connected to a guide piece 100 which is moved back and forth in a profile rail 101, transversely to the plane of the material web 23. The material web 23 runs between the folding rollers 98, 99. A sideways movement takes place during a phase in which a kink between adjacent blanks 20 is in the area of Folding rolls 98, 99 is located. The material web 23 is folded by the sideways movement.

Diese läuft sodann vorgefaltet in ein in Förderrichtung divergierendes Mundstück 102 ein. Dieses besteht aus an jeder Seite angeordneten, angetriebenen Mundstückbändern 103, 104. Mit zunehmender Verbreiterung eines Förderraums zwischen den Mundstückbändern 103, 104 wird die Zick-Zack-Faltung aufgebaut und die Zuschnitte 20 in zunehmend kleinerem Abstand zueinander bewegt, bis sie schließlich im Bereich der Förderbänder 40, 41 in Dichtlage angeordnet sind.This then runs in a prefolded manner into a mouthpiece 102 which diverges in the conveying direction. This consists of driven mouthpiece belts 103, 104 arranged on each side. With the increasing widening of a conveying space between the mouthpiece belts 103, 104, the zigzag fold is built up and the blanks 20 are moved at an increasingly smaller distance from one another until they finally reach in the region of Conveyor belts 40, 41 are arranged in the sealing position.

Claims (14)

  1. Process for the handling, especially conveyance, of a multiplicity of blanks which are connected to one another at their edges, especially longitudinal edges (21, 22), to form a continuous material web, for the production of packs, preferably in conjunction with a packaging machine, characterised in that the blanks (20) connected to one another are folded against one another in a concertina-like or zigzag-shaped manner until the blanks lie closely against one another, and in that the blank strand (24) thus formed is conveyed in a different direction, at the same time being deflected, and is supported by conveying members, in the region of the deflection the blanks (20) being fanned open parallel to their folding edges or longitudinal edges (21, 22) or transversely relative to these.
  2. Process according to Claim 1, characterised in that the material web consists of blanks (20) made of especially thin cardboard which are connected to one another at their edges via a residual connection formed by shorter and longer punching cuts, the material web being folded in a zigzag-shaped manner in the region of the residual connections between adjacent blanks (29), an especially continuous conveying drive being exerted on the blank strand (24), preferably on outer edges (longitudinal edges 21, 22 and/or transverse edges 25, 26) of the latter which are formed as a result of the zigzag folding.
  3. Apparatus for the handling, especially conveyance and storage, of blanks which, to form a blank strand (24), are connected to one another at their edges (21, 22) to form a continuous material web and which are folded in a zigzag-shaped manner until they lie closely against one another,
    - there being provided as conveying members driven conveyor bands (39, 40, 41) which are arranged continuously on at least two mutually opposite sides of the blank strand (24) in order to guide the latter and which, taking up the blank strand (24), bear frictionally and/or positively on respectively facing longitudinal edges (21, 22) and/or transverse edges (25, 26) of the latter,
    - one of the conveyor bands (39, 40, 41) being provided on the inside of the blank strand (24) in the region of deflections and on the underside in the region of horizontal conveying zones,
    - and the conveyor bands (39, 40, 41) being subdivided into a plurality of band portions directly adjoining one another, deflecting rollers (49, 50, 51..) for conveyor bands adjoining one another being arranged on the same shaft.
  4. Apparatus according to Claim 3, characterised in that in the region of the deflection of the blank strand (24), the blanks (20) connected to one another being fanned open in the region of the radially outer side of the blank strand (24), is arranged respectively a deflection band (52) or deflection conveyor (54), the conveying side or belt (42) of which bears arcuately against radially outer edges (longitudinal edges 21, 22 or transverse edges 25, 26) along a path in the form of an arc of a circle.
  5. Apparatus according to Claim 3, characterised in that, during a deflection of the material web (23) via the especially short transverse edges (25, 26), the blanks (20) are supported on the inside on a shaping roller (59), the profile of which corresponds to the contour of the transverse edge (25, 26), especially is trapezoidal for supporting the correspondingly designed transverse edge (26) of a blank (20) for the production of hinge-lid packs.
  6. Apparatus according to Claim 3 or 4, characterised in that the conveyor bands (39, 40, 41, etc.) and/or the deflection bands (52) or deflection conveyors (54) are equipped with an elastic coating (44) on the side facing the blanks (20), for the positive or non-positive pressing in of edges of the blanks (20) during transport.
  7. Apparatus according to Claim 3, characterised in that, on the free sides not grasped by conveyor bands (39, 40, 41, etc), the blank strand (24) is guided and safeguarded against damage by fixed guide webs (67) or guide ribs (69).
  8. Apparatus according to Claim 3, characterised in that the conveying members (conveyor bands 39, 40, 41, etc) for the blank strand (24) and guide members (guide web 67, guide rib 69, guide rails 70, etc) are arranged on a supporting member located on one side, especially on a cheek (68) as part of a machine frame, deflection rollers (45, 46, etc) for conveyor bands (39, 40, 41, etc) being attached to carrier bolts (60) and guide members (guide web 67, etc) projecting on one side on supporting bars (71) projecting on one side.
  9. Apparatus especially according to Claim 3, characterised in that a storage zone (67) with a blank strand (24) of variable density of the blanks (20) is formed in the region of a straight, especially horizontal conveying zone, and during the reduction of the storage zone (76) the blanks (20) can be fanned open at an increasing distance from one another.
  10. Apparatus according to Claim 9, characterised in that the storage zone (76) is formed between two conveyor bands (77, 78) terminating or deflected at a distance from one another, whilst the discharge conveyor band (78) located at the front in the conveying direction of the blank strand (24) is movable in the conveying direction for continuing the transport of the blank strand (24) when there is an interrupted or reduced feed of the blank strand (24) by the rear feeding conveyor band (77).
  11. Apparatus according to Claim 10, characterised in that the adjustable conveyor band (78) is guided over a deflection roller (79) which is movable to and fro in the conveying direction of the blank strand (24), for building up or reducing the storage zone (76), at the same time with an increase or reduction of a band loop (83) formed by the conveyor band (78).
  12. Apparatus according to Claim 9, characterised in that, in the region of the storage zone (76), the blank strand (24) is supported by elastically stretchable guide members bearing against the edges of the blank strand (24), especially by supporting belts (86, 87) made of elastic material which follow the variations in length of the storage zone (76) during the reduction and build-up of the latter by stretching, in such a way that the relative position between the edges of the blanks (20) grasped by the supporting belts (86, 87) remains unchanged.
  13. Apparatus especially according to Claim 3, characterised in that the blank strand (24) is formed from an extended material web (23) as a result of the transverse movement of a folding member (97) which acts on the material web (23) and which exerts a transversely directed folding force in one direction and the other in the region of the folding edges (38) or longitudinal edges (21, 22) to be formed, the folding member (97) preferably consisting of two folding rollers (98, 99) which are arranged at a short distance from one another and between which the material web (23) runs through and which are movable to and fro transversely relative to this, especially with a guide element (100) in a sectional rail (101).
  14. Apparatus according to Claim 13, characterised in that the folding member (97) is followed by a mouthpiece (102) which consists of diverging mouthpiece bands (103, 104) and which merges into a conveying zone, for the blank strand (24), formed by conveyor bands (40, 41).
EP91100479A 1990-02-06 1991-01-17 Method of and device for handling, especially transporting blanks Expired - Lifetime EP0441136B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4003451A DE4003451A1 (en) 1990-02-06 1990-02-06 Method of supplying carton making machine with blanks
DE4003451 1990-02-06

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EP0441136A2 EP0441136A2 (en) 1991-08-14
EP0441136A3 EP0441136A3 (en) 1991-10-16
EP0441136B1 true EP0441136B1 (en) 1995-03-29

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US (1) US5154036A (en)
EP (1) EP0441136B1 (en)
JP (1) JP2622432B2 (en)
BR (1) BR9100495A (en)
DE (2) DE4003451A1 (en)

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DE3643545A1 (en) * 1986-12-19 1988-06-30 Brueckner Trockentechnik Gmbh GOODS STORAGE FOR TRANSPORTING A TEXTILE TRACK
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IT1220347B (en) * 1988-04-27 1990-06-15 I M A Ind Macch Autom Spa SYSTEM FOR FOOD PRE-PACKAGED PACKAGING BOXES IN FOLDED TUBULAR SHAPE APPROACHED TO PACKAGING MACHINES
US4896475A (en) * 1989-02-21 1990-01-30 Polysar Financial Services S.A. Rocker frame

Also Published As

Publication number Publication date
DE4003451A1 (en) 1991-08-08
DE59105018D1 (en) 1995-05-04
JP2622432B2 (en) 1997-06-18
US5154036A (en) 1992-10-13
JPH04213559A (en) 1992-08-04
BR9100495A (en) 1991-10-29
EP0441136A2 (en) 1991-08-14
EP0441136A3 (en) 1991-10-16

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