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EP0187323B1 - Method and device for the production of package blanks - Google Patents

Method and device for the production of package blanks Download PDF

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Publication number
EP0187323B1
EP0187323B1 EP85116139A EP85116139A EP0187323B1 EP 0187323 B1 EP0187323 B1 EP 0187323B1 EP 85116139 A EP85116139 A EP 85116139A EP 85116139 A EP85116139 A EP 85116139A EP 0187323 B1 EP0187323 B1 EP 0187323B1
Authority
EP
European Patent Office
Prior art keywords
embossing
sheet
rollers
station
roller
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
Application number
EP85116139A
Other languages
German (de)
French (fr)
Other versions
EP0187323A1 (en
Inventor
Heinz Focke
Jürgen Focke
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Focke and Co GmbH and Co KG filed Critical Focke and Co GmbH and Co KG
Publication of EP0187323A1 publication Critical patent/EP0187323A1/en
Application granted granted Critical
Publication of EP0187323B1 publication Critical patent/EP0187323B1/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31FMECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/08Creasing
    • B31F1/10Creasing by rotary tools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18Means for removing cut-out material or waste
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38Cutting-out; Stamping-out
    • B26F1/384Cutting-out; Stamping-out using rotating drums
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/16Cutting webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18Means for removing cut-out material or waste
    • B26D2007/1881Means for removing cut-out material or waste using countertools
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/146Cutting, e.g. perforating, punching, slitting or trimming using tools mounted on a drum
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/20Cutting sheets or blanks
    • B31B50/22Notching; Trimming edges of flaps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/25Surface scoring
    • B31B50/256Surface scoring using tools mounted on a drum
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/04Processes
    • Y10T83/0524Plural cutting steps
    • Y10T83/0572Plural cutting steps effect progressive cut
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/202With product handling means
    • Y10T83/2066By fluid current
    • Y10T83/207By suction means
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/465Cutting motion of tool has component in direction of moving work
    • Y10T83/4705Plural separately mounted flying cutters
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/465Cutting motion of tool has component in direction of moving work
    • Y10T83/4766Orbital motion of cutting blade
    • Y10T83/4795Rotary tool
    • Y10T83/4804Single tool action drive

Definitions

  • the invention relates to a method for producing blanks for packaging (folding cartons, folding boxes) from paper, cardboard or the like. By cutting off a web of packaging material, the blanks being separated from the web during transport, in particular at constant speed , and an apparatus for performing this method.
  • Such a method and the associated device are known from AT-B-102 844, which deals with the production of blanks which are arranged on the material web without interlocking, so that no pieces of waste are formed between toothed folding tabs of adjacent blanks that require special treatment.
  • the present invention is concerned with producing blanks for folding boxes, folding boxes or the like from thin cardboard, which are used extensively for the packaging of medicaments, etc.
  • the special feature of the design of the blanks is that folding tabs for forming the end faces of the folding box are relatively complex and are arranged on the material web with mutual engagement (toothing) in order to save material.
  • side walls of the folding box associated side tabs are formed with a smaller width than that of the assigned side wall. Due to the smaller widths of folding flaps, waste pieces are created when punching or separating the blanks.
  • the invention has for its object to provide a method and a device of the type mentioned, which or allows increased removal of the blanks with increased performance while simultaneously shaping the folding flap at both ends of the respective blank.
  • the production of the blanks is carried out in successive work cycles carried out during the transport movement of the material web.
  • the cuts are cut off with simultaneous shaping of the folding flaps at both ends of the cut in several, in particular two, successive separating cuts. These are laid out in such a way that each cut can be carried out without being affected by other necessary cuts.
  • selection of the successive separating cuts ensures that separating cuts which are at a short distance from one another due to the design of the folding flaps do not have to be carried out simultaneously. This applies in particular to separating cuts extending in the longitudinal direction of the material web or in the conveying direction thereof for the lateral limitation of the waste pieces formed between the toothed flaps arranged adjacent to each other.
  • embossments for forming fold lines within the blank are carried out in successive steps such that, for example, only longitudinal fold lines are formed in the first in a first embossing cycle and transverse fold lines are formed in a subsequent embossing cycle.
  • the separating cuts for separating the blanks from the subsequent web are carried out in accordance with a further proposal of the invention, which is known per se from EP-A-116 745, in such a way that the blanks remain connected to the web to the end via thin remaining connections. This makes it possible, in particular, to mechanically remove the waste pieces formed in the area of the folding tabs.
  • the blanks are then separated by tearing off, in particular by the locally higher transport speed of the web or the respective front blank.
  • the exemplary embodiment of the device shown relates to the production of blanks 10, as are used in a variety of ways in the packaging industry, for example for accommodating pharmaceutical and cosmetic products.
  • the blanks 10 are separated from a continuous web 11 of packaging material, in particular made of thin cardboard, one after the other and fed to a packaging machine for producing the folding cartons.
  • the blanks 10 extend over the width of the web 11 or their width corresponds to the transverse dimension of a spread blank 10.
  • this consists of marked surface areas for forming a front wall 12, a rear wall 13 and narrower side walls 14 and 15.
  • a connecting strip 16 connects to the rear wall 13 and is to be connected to the inside of the outer side wall 15 in order to form the folding box .
  • the end faces of the folding box are formed by folding tabs. These are each side flaps 17 and 18 in the area of the associated side walls 14, 15 and a closing flap 19 which on one side faces the front wall 12 and on the other side, in the direction of transport of the web 11, to the front Rear wall 13 connects.
  • the closing flap 19 consists of a top wall 20 in the dimensions of the end face of the folding box and a closing tongue 21 attached to the free side of the top wall 20.
  • the top wall 20 forms the outer, full-surface covering of the two end faces of the folding box, while the folded closing tongue 21 into one Gap is inserted, which arises on the inside of the front wall 12 or rear wall 13 in the finished folding box.
  • an edge 22 of the front wall 12 and the rear wall 13 opposite the locking flap 19 is free of locking flaps.
  • the closing flaps 19, on the one hand, and two abutting side flaps 17, 18 of adjacent blanks 10 are dimensioned such that they fill a material strip 23 formed between the box walls 12, 13, 14 and 15 successive blanks 10 in the longitudinal direction.
  • the blanks 10 are thereby arranged in a material-saving manner within the web 11.
  • the closing flap 19 is delimited in the area of the top wall 20 by lateral cutting lines 24 and 25, which extend in the longitudinal direction of the web 11, as a continuation of the lateral delimitation of the front wall 12 or rear wall 13.
  • the cutting lines 24, 25 are in the present case slightly bent and formed converging.
  • the top wall 20 is as wide as the adjoining front or rear wall 12, 13.
  • the side tabs 17 and 18 are formed in the predominant partial area with a smaller width than the adjacent side walls 14, 15.
  • the side tabs 17, 18 are delimited by angled cutting lines 26 and 27.
  • these narrower side flaps 17, 18 are of the same width as the associated side walls 14, 15.
  • In the region of the material strip 23 there are accordingly folding flaps 17, 18, 19 of adjacent or successive blanks 10.
  • Die Dimension of locking tabs 19 including locking tongue 21 corresponds to the width of the material strip 23.
  • the side tabs 17 and 18 correspond to half the width of the material strip 23, so that the side tabs 17, 18 of adjacent blanks 10 abut one another. When a blank 10 is severed, corresponding corresponding folding flaps are thereby exposed at the same time.
  • the design of the folding tabs 17 .. 19 creates waste pieces 28, 29, 30, 31 and 32 made of packaging material of different shapes and sizes.
  • cross-cutting lines 33 are provided in the area of the closing tabs 19 and further cross-cutting lines 34 in the area of the side tabs 17, 18, the latter approximately in the middle in the material strip 23.
  • the latter cutting lines 33 and 34 are designed so that narrow residual connections 35 and 36 remain between the adjacent blanks 10 or between the respective front blank 10 and the subsequent material web.
  • the described surface areas of the blank for the formation of walls and flaps are delimited by embossed longitudinal fold lines 37 and transverse fold lines 38. These fold lines 37, 38 are groove-like embossments.
  • the separating cuts namely cutting lines 24, 27 and 33, 34, as well as folding lines 37, 38 are made during the uninterrupted transport of the web 11, in particular during a continuous conveying thereof.
  • Cutting lines and / or folding lines are applied in successive steps, according to a special concept.
  • the web 11 passes through several work stations, namely a first embossing station 39 for attaching the longitudinal fold lines 37, then a second embossing station 40 for attaching the transverse fold lines 38. It then follows a first cutting station 41 for applying a certain number of selected cutting lines and a second cutting station 42 for applying further, namely the remaining cutting lines.
  • the web 11 then passes through a waste removal station 43. In the region of a separation station 44, the blanks 10 are finally separated from the subsequent web 11 one after the other, namely torn off.
  • the above work stations are formed by pairs of rollers in the embodiment of the device shown.
  • the web 11 is moved on a (horizontal) conveyor track and is moved between opposing upper and lower rollers.
  • a first pair of rollers consists of an upper and lower pulling roller 45 and 46, respectively. These are driven in rotation and provide the feed of the web 11 while determining the conveying speed.
  • a subsequent pair of rollers in the area of the first embossing station 39 consists of an (upper) embossing roller 47 and a lower counter-roller 48.
  • the embossing roller 47 is provided on the circumferential surface with embossing ribs 49 which extend in the circumferential direction, namely two groups of such spaced-apart circumferentially Embossing ribs 49, so that two groups of longitudinal fold lines 37 are attached per revolution of the embossing roller 47.
  • the embossing ribs 49 are each arranged at an axial distance from one another.
  • an image corresponding to FIG. 5 is thus produced with fold lines 37 running only in the longitudinal direction.
  • the counter roller 48 is provided in the region of the embossing ribs 49 with corresponding grooves 50, likewise in two groups distributed along the circumference.
  • a further embossing roller 51 with counter roller 52 is arranged on both sides of the web 11 in the region of the embossing station 40.
  • the embossing roller here consists of two groups of embossing ribs 53 extending in the axial direction. These are also arranged in such a way that transverse fold lines 38 of two blanks 10 are applied when the embossing roller 51 is rotated fully. After passing through this embossing station 40, the transverse folding lines 38 according to FIG. 6 are also arranged.
  • the counter roller 52 is formed in the region of the embossing ribs 53 with corresponding grooves 54 pointing in the axial direction, likewise in two groups.
  • the cutting lines 24 and 25 shown in FIG. 7 are applied for the lateral limitation of the two locking tabs 19.
  • a (lower) cutting roller 55 and an (upper) counter roller 56 are provided.
  • the cutting roller 55 is provided on the circumferential surface with two groups of projecting cutting knives 57, which correspond in design and size to the cutting lines 24 and 25 to be attached.
  • the cutting knives 57 interact with the smooth-surface counter roller 56. The latter creates the necessary back pressure when cutting.
  • a (lower) cutting roller 58 and an (upper) counter roller 59 are also arranged opposite one another.
  • the cutting roller 58 has a number of cutting knives 60 arranged in two groups in the dimensions, arrangement and design of the cutting lines 26 and 27 on the one hand and the transverse cutting lines 33 and 34 on the other hand. Accordingly, the necessary separating cuts are completed in the cutting station 42, as shown in FIG. 8. Except for the remaining connections 35, 36, the adjacent cuts 10 are separated from one another by cutting lines.
  • the waste disposal station 43 which is also equipped with two opposing rollers, namely a squeezing roller 61 (top) and a suction roller 62 (bottom).
  • the squeezing roller 61 is provided on its outer surface with ridges 63, namely in two groups arranged circumferentially apart from one another.
  • the elevations 63 correspond in their arrangement, design and size to the pieces of waste 28..32.
  • the suction roller 62 is connected to an air pressure source. Compressed air is conveyed into the interior of the suction roller 62 via a hollow shaft 66.
  • the end face 67 of the hollow suction roller 62 opposite the hollow shaft 66 arranged on one side is open, so that the waste pieces 28 ... 32 are blown off here.
  • the blanks 10 freed from the waste pieces 28, 32 are separated from the subsequent web 11 in the area of the separation station 44, specifically by pulling rollers 68, 69, which are driven at a slightly higher speed than the roller pairs described above and thus as the web 11.
  • the speed difference causes the break in the area of the remaining connections 35, 36.
  • All of the roller pairs described are driven centrally by a motor (not shown in detail) via a main drive shaft 70. This is directly assigned to the (lower) pull roller 46.
  • an intermediate drive shaft 71 is driven via a gear transmission 72.
  • the main drive shaft 70 is assigned an actuating gear 78, by means of which predetermined position differences or those which arise during operation are compensated for between the web 11 on the one hand and the roller pairs on the other.
  • the web 11 is provided with printing marks 76 arranged at regular intervals from one another. In the present case, these are arranged in the region of the side tab 18.
  • a photocell 77 installed stationary over the web 11 scans the print marks 76. Any differences in position are perceived by the photocell 77 and fed to the actuating gear 78.
  • a servomotor 79 which can be driven on the left and right and which is connected to the photocell 77 acts on a setting wheel 80 which is rotatably mounted on the main drive shaft 70.
  • the adjusting wheel 80 is provided with an off-center pin 81 on which a double gear 82 is rotatably mounted.
  • Single gears 83 and 84 equipped with different numbers of teeth - z. B. 48 or 50 teeth - are in engagement with counter gears 85 and 86 on the main drive shaft 70. That with the larger number of teeth - z. B. with 50 teeth - equipped counter gear 85 sits firmly on the main drive shaft 70, while the second counter gear 86 - for example with 48 teeth - is connected to the actual pull roller 46 and is rotatably mounted on the main drive shaft 70. Counter gear 86 and pull roller 46 are connected to each other.
  • the drive is accordingly transmitted from the main drive shaft 70 via the first counter gear 85 to the first single gear 83 of the double gear 82, from there to the second single gear 84 and then to the counter gear 86.
  • Slight adjustments of the adjusting wheel 80 triggered by the servomotor 79, cause an adjustment of the pulling rollers 45, 46 responsible for the feed and thus a correction of any relative positions.
  • the actuating gear 78 acts exclusively on the pull rollers 45, 46. Adjustment movements of the pull rollers 45, 46 in the sense of an additional feed or a slight deceleration of the web 11 are accordingly not transmitted to the roller pairs of the work stations.
  • the required adjustments of the pulling rollers 45, 46 in one direction or the other take place during the transport of the web 11 and while the pairs of rollers in the work stations remain unchanged.
  • the adjustment of the pull rollers 45, 46 can have a slight advance or a slight delay, depending on the displacements sensed in the relative position of the web 11. With a corresponding engagement position of the roller pairs in the work stations, this can result in the web 11 being slightly compressed or stretched in the region between the pull rollers 45, 46 and the embossing station 39.
  • the pairs of rollers in the work stations are designed such that segments 87, 88, 89, 90 and 91 on at least one of the work areas on the circumference of the rollers (embossing ribs, grooves, cutting knife) Rolls of a pair of rollers are formed, in the area of which the web 11 is conveyed without contact or drive.
  • the rollers in question are free from organs (elevations, etc.) which come into contact or contact with the web 11.
  • the roller pairs are adjusted in their relative position to each other so that work cycles (embossing, cutting, pressing out pieces of waste) always take place simultaneously for all workstations. Accordingly, segments 87..91 for web 11 also come into effect at the same time, so that a slight advance or a slight backward displacement become effective as soon as segments 87..91 lie opposite web 11.
  • the web 11 is conveyed between stationary top guides 92 and underpasses 93.

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  • Life Sciences & Earth Sciences (AREA)
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Description

Die Erfindung betrifft ein Verfahren zum Herstellen von Zuschnitten für Verpackungen (Faltkartons, Faltschachteln) aus Papier, Pappe od. dgl. durch Abtrennen von einer Bahn des Verpackungsmaterials, wobei die Zuschnitte während des Transports der Bahn, insbesondere bei konstanter Geschwindigkeit, von dieser abgetrennt werden, sowie eine Vorrichtung zur Durchführung dieses Verfahrens.The invention relates to a method for producing blanks for packaging (folding cartons, folding boxes) from paper, cardboard or the like. By cutting off a web of packaging material, the blanks being separated from the web during transport, in particular at constant speed , and an apparatus for performing this method.

Ein derartiges Verfahren sowie die dazugehörende Vorrichtung sind aus der AT-B-102 844 bekannt, wobei es dort um die Herstellung von Zuschnitten geht, die ohne gegenseitige Verzahnung auf der Materialbahn angeordnet sind, so daß auch keine Abfallstücke zwischen verzahnt angeordneten Faltlappen aneinandergrenzender Zuschnitte gebildet werden, die einer besonderen Behandlung bedürfen.Such a method and the associated device are known from AT-B-102 844, which deals with the production of blanks which are arranged on the material web without interlocking, so that no pieces of waste are formed between toothed folding tabs of adjacent blanks that require special treatment.

Bei der vorliegenden Erfindung geht es darum, Zuschnitte für Faltschachteln, Faltkartons od. dgl. aus dünnem Karton herzustellen, die umfänglich für die Verpackung von Arzneimitteln etc. eingesetzt werden. Die Besonderheit bei der Ausgestaltung der Zuschnitte liegt darin, daß Faltlappen zur Bildung der Stirnseiten der Faltschachtel relativ komplex ausgebildet und aus Gründen der Materialeinsparung mit wechselseitigem Eingriff (Verzahnung) auf der Materialbahn angeordnet sind. Des weiteren sind Seitenwänden der Faltschachtel zugeordnete Seitenlappen mit einer geringeren Breite ausgebildet als die der zugeordneten Seitenwand. Durch die Minderbreiten von Faltlappen entstehen Abfallstücke beim Stanzen bzw. Abtrennen der Zuschnitte.The present invention is concerned with producing blanks for folding boxes, folding boxes or the like from thin cardboard, which are used extensively for the packaging of medicaments, etc. The special feature of the design of the blanks is that folding tabs for forming the end faces of the folding box are relatively complex and are arranged on the material web with mutual engagement (toothing) in order to save material. Furthermore, side walls of the folding box associated side tabs are formed with a smaller width than that of the assigned side wall. Due to the smaller widths of folding flaps, waste pieces are created when punching or separating the blanks.

In der Praxis werden derartige Zuschnitte bisher überwiegend durch plattenartige Stanzwerkzeuge hergestellt, die in einem Arbeitstakt (Stanztakt) aus einem größeren Bogen des Verpackungsmaterials eine entsprechende Anzahl von Zuschnitten ausstanzen. Nach dem Stanztakt werden die Abfallstücke von Hand beseitigt. Die Zuschnitte müssen dann in eine für die nachfolgende Verpackung geeignete Position gebracht werden. Dadurch ist der Arbeitsaufwand verhältnismäßig groß und die Leistung auch der nachfolgenden Verpackungsmaschine begrenzt.In practice, such blanks have so far mainly been produced by plate-like punching tools, which punch out a corresponding number of blanks from a larger sheet of packaging material in one work cycle (punching cycle). After the punching cycle, the pieces of waste are removed by hand. The blanks must then be brought into a position suitable for the subsequent packaging. As a result, the workload is relatively large and the performance of the subsequent packaging machine is also limited.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung der eingangs genannten Art zu schaffen, das bzw. die bei erhöhter Leistung ein problemloses Abtrennen der Zuschnitte unter gleichzeitiger Ausformung der Faltlappen an beiden Enden des jeweiligen Zuschnitts erlaubt.The invention has for its object to provide a method and a device of the type mentioned, which or allows increased removal of the blanks with increased performance while simultaneously shaping the folding flap at both ends of the respective blank.

Diese Aufgabe wird verfahrenstechnisch durch die kennzeichnenden Merkmale des Patentanspruches 1 und vorrichtungstechnisch durch die kennzeichnenden Merkmale des Patentanspruches 8 gelöst.This object is achieved in terms of process technology by the characterizing features of patent claim 1 and in terms of device technology by the characterizing features of patent claim 8.

Erfindungsgemäß wird bei der Herstellung der Zuschnitte in aufeinanderfolgenden, während der Transportbewegung der Materialbahn durchgeführten Arbeitstakten vorgegangen. Das Abtrennen der Zuschnitte unter gleichzeitiger Ausformung der Faltlappen an beiden Enden des Zuschnitts erfolgt in mehreren, insbesondere zwei aufeinanderfolgenden Trennschnitten. Diese sind so gelegt, daß jeder Trennschnitt ohne Beeinträchtigung durch weitere notwendige Trennschnitte ausgeführt werden kann. Insbesondere wird durch Auswahl der aufeinanderfolgenden Trennschnitte gewährleistet, daß Trennschnitte, die aufgrund der Gestaltung der Faltlappen in geringem Abstand voneinander liegen, nicht gleichzeitig ausgeführt werden müssen. Dies gilt insbesondere für sich in Längsrichtung der Materialbahn bzw. in Förderrichtung derselben erstreckende Trennschnitte zur seitlichen Begrenzung der zwischen den verzahnt angeordneten Faltlappen aneinandergrenzender Zuschnitte ausgebildeten Abfallstücke.According to the invention, the production of the blanks is carried out in successive work cycles carried out during the transport movement of the material web. The cuts are cut off with simultaneous shaping of the folding flaps at both ends of the cut in several, in particular two, successive separating cuts. These are laid out in such a way that each cut can be carried out without being affected by other necessary cuts. In particular, selection of the successive separating cuts ensures that separating cuts which are at a short distance from one another due to the design of the folding flaps do not have to be carried out simultaneously. This applies in particular to separating cuts extending in the longitudinal direction of the material web or in the conveying direction thereof for the lateral limitation of the waste pieces formed between the toothed flaps arranged adjacent to each other.

Des weiteren werden Prägungen zur Bildung von Faltlinien innerhalb des Zuschnitts, nämlich zur Abgrenzung von Schachtelwänden, in aufeinanderfolgenden Schritten ausgeführt, derart, daß beispielsweise in einem ersten Prägetakt ausschließlich Längsfaltlinien und in einem nachfolgenden Prägetakt Querfaltlinien in den Zuschnitt eingeformt werden.Furthermore, embossments for forming fold lines within the blank, namely for delimiting box walls, are carried out in successive steps such that, for example, only longitudinal fold lines are formed in the first in a first embossing cycle and transverse fold lines are formed in a subsequent embossing cycle.

Die Trennschnitte zum Abtrennen der Zuschnitte von der nachfolgenden Bahn werden gemäß einem weiteren Vorschlag der Erfindung, welcher an sich bekannt ist aus der EP-A-116 745, so ausgeführt, daß die Zuschnitte bis zuletzt über dünne Restverbindungen mit der Bahn verbunden bleiben. Dadurch ist es insbesondere möglich, die im Bereich der Faltlappen gebildeten Abfallstücke mechanisch zu beseitigen. Danach erfolgt die Abtrennung der Zuschnitte durch Abreißen, insbesondere durch örtlich höhere Transportgeschwindigkeit der Bahn bzw. des jeweils vorderen Zuschnitts.The separating cuts for separating the blanks from the subsequent web are carried out in accordance with a further proposal of the invention, which is known per se from EP-A-116 745, in such a way that the blanks remain connected to the web to the end via thin remaining connections. This makes it possible, in particular, to mechanically remove the waste pieces formed in the area of the folding tabs. The blanks are then separated by tearing off, in particular by the locally higher transport speed of the web or the respective front blank.

Weitere Einzelheiten der Erfindung, insbesondere der erfindungsgemäßen Vorrichtung, sind in den Ansprüchen 9 bis 18 beschrieben.Further details of the invention, in particular the device according to the invention, are described in claims 9 to 18.

Nachstehend wird eine Ausführungsform einer erfindungsgemäßen Vorrichtung, mit welcher das erfindungsgemäße Verfahren durchführbar ist, anhand der beigefügten Zeichnung näher erläutert. Es zeigen:

  • Fig. 1 die wesentlichen Einzelheiten der Vorrichtung im schematischen Grundriß,
  • Fig. 2 eine ebenfalls schematische Seitenansicht der Vorrichtung gemäß Fig. 1,
  • Fig. 3 einen Ausschnitt der Vorrichtung im Grundriß bei gegenüber Fig. 1 vergrößertem Maßstab,
  • Fig. 4 eine Seitenansicht eines (mittleren) Teils der Vorrichtung in gegenüber Fig. 2 vergrößertem Maßstab,
  • Fig. 5 einen Ausschnitt der Bahn aus Verpackungsmaterial nach Prägung von Längsfaltlinien,
  • Fig. 6 eine Darstellung des Abschnitts der Bahn nach prägung der Querfaltlinien, Fig. 7 den Bahnabschnitt nach einem ersten Trennschnitt,
  • Fig. 8 den Bahnabschnitt nach einem weiteren Trennschnitt,
  • Fig. 9 einen Vertikalschnitt im Bereich einer Station zur Beseitigung von Abfallstücken.
An embodiment of a device according to the invention, with which the method according to the invention can be carried out, is explained in more detail below with reference to the attached drawing. Show it:
  • 1 shows the essential details of the device in a schematic plan view,
  • 2 is also a schematic side view of the device according to FIG. 1,
  • 3 shows a detail of the device in plan view on an enlarged scale compared to FIG. 1,
  • 4 is a side view of a (middle) part of the device on an enlarged scale compared to FIG. 2,
  • 5 shows a section of the web of packaging material after embossing longitudinal fold lines,
  • Fig. 6 is an illustration of the portion of the web after embossing the transverse fold lines, FIG. 7 the web section after a first separating cut,
  • 8 the web section after a further separating cut,
  • Fig. 9 is a vertical section in the area of a station for removing pieces of waste.

Das gezeigte Ausführungsbeispiel der Vorrichtung bezieht sich auf die Herstellung von Zuschnitten 10, wie sie in der Verpackungsindustrie vielfältig zur Anwendung kommen, beispielsweise zur Aufnahme von Pharmazeutischen und kosmetischen Produkten. Die Zuschnitte 10 werden von einer fortlaufenden Bahn 11 des Verpackungsmaterials, insbesondere aus dünner Pappe, nacheinander abgetrennt und einer Verpackungsmaschine zur Herstellung der Faltkartons zugeführt. Die Zuschnitte 10 erstrecken sich über die Breite der Bahn 11 bzw. deren Breite entspricht der Querabmessung eines ausgebreiteten Zuschnitts 10.The exemplary embodiment of the device shown relates to the production of blanks 10, as are used in a variety of ways in the packaging industry, for example for accommodating pharmaceutical and cosmetic products. The blanks 10 are separated from a continuous web 11 of packaging material, in particular made of thin cardboard, one after the other and fed to a packaging machine for producing the folding cartons. The blanks 10 extend over the width of the web 11 or their width corresponds to the transverse dimension of a spread blank 10.

Dieser besteht bei dem gezeigten Ausführungsbeispiel aus markierten Flächenbereichen zur Bildung einer Vorderwand 12, einer Rückwand 13 sowie schmaleren Seitenwänden 14 und 15. An die Rückwand 13 schließt ein Verbindungsstreifen 16 an, der zur Bildung der Faltschachtel mit der Innenseite der äußeren Seitenwand 15 zu verbinden ist.In the exemplary embodiment shown, this consists of marked surface areas for forming a front wall 12, a rear wall 13 and narrower side walls 14 and 15. A connecting strip 16 connects to the rear wall 13 and is to be connected to the inside of the outer side wall 15 in order to form the folding box .

Stirnseiten der Faltschachtel werden durch Faltlappen gebildet. Es handelt sich dabei jeweils um Seitenlappen 17 und 18 im Bereich der zugeordneten Seitenwände 14, 15 sowie um einen Schließlappen 19, der auf der einen Seite an die Vorderwand 12 und auf der anderen Seite, in Transportrichtung der Bahn 11 nach vorn weisend, an die Rückwand 13 anschließt. Der Schließlappen 19 besteht aus einer Deckwand 20 in den Abmessungen der Stirnfläche der Faltschachtel sowie einer an der freien Seite der Deckwand 20 angebrachten Schließzunge 21. Die Deckwand 20 bildet die äußere, vollflächige Abdeckung der beiden Stirnseiten der Faltschachtel, während die umgefaltete Schließzunge 21 in einen Spalt eingeschoben wird, der an der Innenseite der Vorderwand 12 bzw. Rückwand 13 bei der fertiggestellten Faltschachtel entsteht. Ein zum Schließlappen 19 gegenüberliegender Rand 22 der Vorderwand 12 sowie der Rückwand 13 ist zu diesem Zweck frei von Schließlappen.The end faces of the folding box are formed by folding tabs. These are each side flaps 17 and 18 in the area of the associated side walls 14, 15 and a closing flap 19 which on one side faces the front wall 12 and on the other side, in the direction of transport of the web 11, to the front Rear wall 13 connects. The closing flap 19 consists of a top wall 20 in the dimensions of the end face of the folding box and a closing tongue 21 attached to the free side of the top wall 20. The top wall 20 forms the outer, full-surface covering of the two end faces of the folding box, while the folded closing tongue 21 into one Gap is inserted, which arises on the inside of the front wall 12 or rear wall 13 in the finished folding box. For this purpose, an edge 22 of the front wall 12 and the rear wall 13 opposite the locking flap 19 is free of locking flaps.

In Längsrichtung der Bahn 11 sind die Schließlappen 19 einerseits und zwei aneinanderstoßende Seitenlappen 17,18 benachbarter Zuschnitte 10 so dimensioniert, daß sie einen zwischen den Schachtelwänden 12,13, 14 und 15 aufeinanderfolgender Zuschnitte 10 gebildeten Materialstreifen 23 in Längsrichtung ausfüllen. Die Zuschnitte 10 sind dadurch materialsparend innerhalb der Bahn 11 angeordnet.In the longitudinal direction of the web 11, the closing flaps 19, on the one hand, and two abutting side flaps 17, 18 of adjacent blanks 10 are dimensioned such that they fill a material strip 23 formed between the box walls 12, 13, 14 and 15 successive blanks 10 in the longitudinal direction. The blanks 10 are thereby arranged in a material-saving manner within the web 11.

In Querrichtung sind die Faltlappen 17,18,19 komplex gestaltet. Der Schließlappen 19 ist im Bereich der Deckwand 20 durch seitliche Schneidlinien 24 und 25 begrenzt, die sich in Längsrichtung der Bahn 11 erstrecken, als Fortsetzung der seitlichen Begrenzung von Vorderwand 12 oder Rückwand 13. Im Bereich der Schließzunge 21 sind die Schneidlinien 24, 25 im vorliegenden Falle leicht abgebogen und konvergierend ausgebildet. Die Deckwand 20 ist so breit wie die anschließende Vorder- oder Rückwand 12, 13.In the transverse direction, the folding tabs 17, 18, 19 are complex. The closing flap 19 is delimited in the area of the top wall 20 by lateral cutting lines 24 and 25, which extend in the longitudinal direction of the web 11, as a continuation of the lateral delimitation of the front wall 12 or rear wall 13. In the area of the closing tongue 21, the cutting lines 24, 25 are in the present case slightly bent and formed converging. The top wall 20 is as wide as the adjoining front or rear wall 12, 13.

Die Seitenlappen 17 und 18 sind im überwiegenden Teilbereich mit geringerer Breite ausgebildet als die angrenzenden Seitenwände 14,15. Zu diesem Zweck werden die Seitenlappen 17, 18 durch abgewinkelte Schneidlinien 26 und 27 begrenzt. Unmittelbar benachbart zu den Seitenwänden 14,15 sind diese schmaleren Seitenlappen 17, 18 in der gleichen Breite ausgebildet wie die zugeordneten Seitenwände 14, 15. Im Bereich des Materialstreifens 23 befinden sich demnach Faltlappen 17, 18, 19 benachbarter bzw. aufeinanderfolgender Zuschnitte 10. Die Abmessung von Schließlappen 19 einschließlich Schließzunge 21, entspricht der Breite des Materialstreifens 23. Die Seitenlappen 17 und 18 entsprechen der halben Breite des Materialstreifens 23, so daß die Seitenlappen 17, 18 benachbarter Zuschnitte 10 gegeneinanderstoßen. Beim Abtrennen eines Zuschnitts 10 werden dadurch zugleich nach vorn weisende korrespondierende Faltlappen freigelegt. Durch die Gestaltung der Faltlappen 17.. 19 entstehen Abfallstücke 28, 29, 30, 31 und 32 aus Verpackungsmaterial unterschiedlicher Gestalt und Größe.The side tabs 17 and 18 are formed in the predominant partial area with a smaller width than the adjacent side walls 14, 15. For this purpose, the side tabs 17, 18 are delimited by angled cutting lines 26 and 27. Immediately adjacent to the side walls 14, 15, these narrower side flaps 17, 18 are of the same width as the associated side walls 14, 15. In the region of the material strip 23 there are accordingly folding flaps 17, 18, 19 of adjacent or successive blanks 10. Die Dimension of locking tabs 19 including locking tongue 21 corresponds to the width of the material strip 23. The side tabs 17 and 18 correspond to half the width of the material strip 23, so that the side tabs 17, 18 of adjacent blanks 10 abut one another. When a blank 10 is severed, corresponding corresponding folding flaps are thereby exposed at the same time. The design of the folding tabs 17 .. 19 creates waste pieces 28, 29, 30, 31 and 32 made of packaging material of different shapes and sizes.

Zum Abtrennen der Zuschnitte 10 von der nachfolgenden Bahn 11 sind Querschneidlinien 33 im Bereich der Schließlappen 19 sowie weitere Querschneidlinien 34 im Bereich der Seitenlappen 17, 18, letztere etwa mittig im Materialstreifen 23, vorgesehen. Die letztgenannten Schneidlinien 33 und 34 werden so ausgeführt, daß schmale Restverbindungen 35 und 36 zwischen den benachbarten Zuschnitten 10 bzw. zwischen dem jeweils vorderen Zuschnitt 10 und der nachfolgenden Materialbahn verbleiben.In order to separate the blanks 10 from the subsequent web 11, cross-cutting lines 33 are provided in the area of the closing tabs 19 and further cross-cutting lines 34 in the area of the side tabs 17, 18, the latter approximately in the middle in the material strip 23. The latter cutting lines 33 and 34 are designed so that narrow residual connections 35 and 36 remain between the adjacent blanks 10 or between the respective front blank 10 and the subsequent material web.

Die beschriebenen Flächenbereiche des Zuschnitts zur Bildung von Wänden und Lappen werden durch eingeprägte Längsfaltlinien 37 und Querfaltlinien 38 begrenzt. Bei diesen Faltlinien 37, 38 handelt es sich um rillenartige Prägungen.The described surface areas of the blank for the formation of walls and flaps are delimited by embossed longitudinal fold lines 37 and transverse fold lines 38. These fold lines 37, 38 are groove-like embossments.

Die Trennschnitte, nämlich Schneidlinien 24..27 bzw. 33, 34, sowie die Faltlinien 37, 38 werden während des ununterbrochenen Transports der Bahn 11, insbesondere während einer kontinuierlichen Förderung derselben angebracht. Schneidlinien und/oder Faltlinien werden dabei in aufeinanderfolgenden Schritten angebracht, und zwar nach einem besonderen Konzept. Zu diesem Zweck durchläuft die Bahn 11 mehrere Arbeitsstationen, nämlich eine erste Prägestation 39 zum Anbringen der längsgerichteten Faltlinien 37, danach eine zweite Prägestation 40 zum Anbringen der quergerichteten Faltlinien 38. Es folgt sodann eine erste Schneidstation 41 zum Anbringen einer bestimmten Anzahl ausgewählter Schneidlinien und eine zweite Schneidstation 42 zum Anbringen weiterer, nämlich der restlichen Schneidlinien. Danach durchläuft die Bahn 11 eine Abfallbeseitigungsstation 43. Im Bereich einer Trennstation 44 werden schließlich die Zuschnitte 10 nacheinander von der nachfolgenden Bahn 11 abgetrennt, nämlich abgerissen.The separating cuts, namely cutting lines 24, 27 and 33, 34, as well as folding lines 37, 38 are made during the uninterrupted transport of the web 11, in particular during a continuous conveying thereof. Cutting lines and / or folding lines are applied in successive steps, according to a special concept. For this purpose, the web 11 passes through several work stations, namely a first embossing station 39 for attaching the longitudinal fold lines 37, then a second embossing station 40 for attaching the transverse fold lines 38. It then follows a first cutting station 41 for applying a certain number of selected cutting lines and a second cutting station 42 for applying further, namely the remaining cutting lines. The web 11 then passes through a waste removal station 43. In the region of a separation station 44, the blanks 10 are finally separated from the subsequent web 11 one after the other, namely torn off.

Die vorstehenden Arbeitsstationen werden bei dem gezeigten Ausführungsbeispiel der Vorrichtung durch Walzenpaare gebildet. Die Bahn 11 wird auf einer (horizontalen) Förderbahn bewegt und dabei zwischen einander gegenüberliegenden, oberen und unteren Walzen hindurchbewegt.The above work stations are formed by pairs of rollers in the embodiment of the device shown. The web 11 is moved on a (horizontal) conveyor track and is moved between opposing upper and lower rollers.

Ein erstes Walzenpaar besteht aus einer oberen und unteren Zugwalze 45 bzw. 46. Diese werden rotierend angetrieben und besorgen den Vorschub der Bahn 11 unter Festlegung der Fördergeschwindigkeit. Ein nachfolgendes Walzenpaar im Bereich der ersten Prägestation 39 besteht aus einer (oberen) Prägewalze 47 und einer unteren Gegenwalze 48. Die Prägewalze 47 ist auf der Umfangsfläche mit sich in Umfangsrichtung erstreckenden Prägerippen 49 versehen, und zwar zwei in Umfangsrichtung mit Abstand voneinander angeordneten Gruppen derartiger Prägerippen 49, so daß je Umdrehung der Prägewalze 47 zwei Gruppen von längsgerichteten Faltlinien 37 angebracht werden. Die Prägerippen 49 sind jeweils in einem axialen Abstand voneinander angeordnet. In der Prägestation 39 wird so ein der Fig. 5 entsprechendes Bild mit lediglich in Längsrichtung verlaufenden Faltlinien 37 hergestellt. Die Gegenwalze 48 ist im Bereich der Prägerippen 49 mit korrespondierenden Nuten 50, ebenfalls in zwei längs des Umfangs verteilten Gruppen, versehen.A first pair of rollers consists of an upper and lower pulling roller 45 and 46, respectively. These are driven in rotation and provide the feed of the web 11 while determining the conveying speed. A subsequent pair of rollers in the area of the first embossing station 39 consists of an (upper) embossing roller 47 and a lower counter-roller 48. The embossing roller 47 is provided on the circumferential surface with embossing ribs 49 which extend in the circumferential direction, namely two groups of such spaced-apart circumferentially Embossing ribs 49, so that two groups of longitudinal fold lines 37 are attached per revolution of the embossing roller 47. The embossing ribs 49 are each arranged at an axial distance from one another. In the embossing station 39, an image corresponding to FIG. 5 is thus produced with fold lines 37 running only in the longitudinal direction. The counter roller 48 is provided in the region of the embossing ribs 49 with corresponding grooves 50, likewise in two groups distributed along the circumference.

Mit einem größeren, nämlich der Länge der längsgerichteten Faltlinien 37 entsprechenden Abstand sind im Bereich der Prägestation 40 eine weitere Prägewalze 51 mit Gegenwalze 52 zu beiden Seiten der Bahn 11 angeordnet. Die Prägewalze besteht hier aus zwei Gruppen von in Axialrichtung sich erstreckenden Prägerippen 53. Auch diese sind so angeordnet, daß bei voller Umdrehung der Prägewalze 51 quergerichtete Faltlinien 38 zweier Zuschnitte 10 angebracht werden. Nach dem Durchlaufen dieser Prägestation 40 sind auch die quergerichteten Faltlinien 38 gemäß Fig. 6 angeordnet. Die Gegenwalze 52 ist im Bereich der Prägerippen 53 mit korrespondierenden, in Axialrichtung weisenden Nuten 54 ausgebildet, ebenfalls in zwei Gruppen.With a larger distance, namely the length of the longitudinal fold lines 37, a further embossing roller 51 with counter roller 52 is arranged on both sides of the web 11 in the region of the embossing station 40. The embossing roller here consists of two groups of embossing ribs 53 extending in the axial direction. These are also arranged in such a way that transverse fold lines 38 of two blanks 10 are applied when the embossing roller 51 is rotated fully. After passing through this embossing station 40, the transverse folding lines 38 according to FIG. 6 are also arranged. The counter roller 52 is formed in the region of the embossing ribs 53 with corresponding grooves 54 pointing in the axial direction, likewise in two groups.

In der nachfolgenden (ersten) Schneidstation 41 werden die in Fig. 7 gezeigten Schneidlinien 24 und 25 zur seitlichen Begrenzung der beiden Schließlappen 19 angebracht. Zu diesem Zweck sind eine (untere) Schneidwalze 55 und eine (obere) Gegenwalze 56 vorgesehen. Die Schneidwalze 55 ist auf der Umfangsfläche mit zwei Gruppen von vorspringenden Schneidmessern 57 versehen, die in der Gestaltung und Größe den anzubringenden Schneidlinien 24 und 25 entsprechen. Die Schneidmesser 57 wirken mit der glattflächigen Gegenwalze 56 zusammen. Letztere erzeugt den erforderlichen Gegendruck beim Schneiden.In the subsequent (first) cutting station 41, the cutting lines 24 and 25 shown in FIG. 7 are applied for the lateral limitation of the two locking tabs 19. For this purpose, a (lower) cutting roller 55 and an (upper) counter roller 56 are provided. The cutting roller 55 is provided on the circumferential surface with two groups of projecting cutting knives 57, which correspond in design and size to the cutting lines 24 and 25 to be attached. The cutting knives 57 interact with the smooth-surface counter roller 56. The latter creates the necessary back pressure when cutting.

In der folgenden Schneidstation 42 sind ebenfalls eine (untere) Schneidwalze 58 und eine (obere) Gegenwalze 59 einander gegenüberliegend angeordnet. Auch hier hat die Schneidwalze 58 eine Anzahl von in zwei Gruppen angeordneten Schneidmessern 60 in der Abmessung, Anordnung und Gestaltung der Schneidlinien 26 und 27 einerseits sowie der quergerichteten Schneidlinien 33 und 34 andererseits. In der Schneidstation 42 werden demnach die erforderlichen Trennschnitte vollendet, entsprechend der Darstellung in Fig. 8. Bis auf die Restverbindungen 35, 36 sind die benachbarten Zuschnitte 10 durch Schneidlinien voneinander abgetrennt.In the following cutting station 42, a (lower) cutting roller 58 and an (upper) counter roller 59 are also arranged opposite one another. Here too, the cutting roller 58 has a number of cutting knives 60 arranged in two groups in the dimensions, arrangement and design of the cutting lines 26 and 27 on the one hand and the transverse cutting lines 33 and 34 on the other hand. Accordingly, the necessary separating cuts are completed in the cutting station 42, as shown in FIG. 8. Except for the remaining connections 35, 36, the adjacent cuts 10 are separated from one another by cutting lines.

Es folgt sodann die Abfallbeseitigungsstation 43, die ebenfalls mit zwei einander gegenüberliegenden Walzen ausgestattet ist, nämlich einer Ausdrückwalze 61 (oben) und einer Absaugwalze 62 (unten). Die Ausdrückwalze 61 ist auf ihrer Mantelfläche mit Erhöhungen 63 versehen, und zwar in zwei mit ümfangsabstand voneinander angeordneten Gruppen. Die Erhöhungen 63 entsprechen in ihrer Anordnung, Gestaltung und Größe den Abfallstücken 28..32. Wenn die Bahn 11 im Anschluß an die Schneidstation 42 durch die Abfallbeseitigungsstation 43 hindurchläuft, werden die zuvor gebildeten Abfallstücke 28..32 durch die entsprechend ausgebildeten Erhöhungen 63 aus der Ebene der Bahn 11 herausgedrückt, und zwar nach unten in die Absaugwalze 62. Diese ist zu diesem Zweck mit Ausnehmungen 64 im Walzenmantel 65 versehen. Die Ausnehmungen 64 entsprechen in der Anordnung, Größe und Gestaltung ebenfalls den zu beseitigenden Abfallstücken 28..32. Diese werden nun durch die Erhöhungen 63 der Ausdrückwalze 61 durch die Ausnehmungen 64 hindurch in das Innere der Absaugwalze 62 gedrückt.This is followed by the waste disposal station 43, which is also equipped with two opposing rollers, namely a squeezing roller 61 (top) and a suction roller 62 (bottom). The squeezing roller 61 is provided on its outer surface with ridges 63, namely in two groups arranged circumferentially apart from one another. The elevations 63 correspond in their arrangement, design and size to the pieces of waste 28..32. When the web 11 passes through the waste removal station 43 following the cutting station 42, the previously formed waste pieces 28, 32 are pressed out of the plane of the web 11 by the correspondingly designed elevations 63, namely down into the suction roller 62. This is for this purpose provided with recesses 64 in the roll shell 65. The recesses 64 also correspond in arrangement, size and design to the pieces of waste 28 to 32 to be removed. These are then pressed through the elevations 63 of the squeezing roller 61 through the recesses 64 into the interior of the suction roller 62.

Zur Beseitigung der Abfallstücke 28..32 ist die Absaugwalze 62 an eine Luftdruckquelle angeschlossen. Über eine Hohlwelle 66 wird Druckluft in das Innere der Absaugwalze 62 gefördert. Die zu der einseitig angeordneten Hohlwelle 66 gegenüberliegende Stirnseite 67 der hohlen Absaugwalze 62 ist offen, so daß die Abfallstücke 28...32 hier abgeblasen werden.To remove the pieces of waste 28..32, the suction roller 62 is connected to an air pressure source. Compressed air is conveyed into the interior of the suction roller 62 via a hollow shaft 66. The end face 67 of the hollow suction roller 62 opposite the hollow shaft 66 arranged on one side is open, so that the waste pieces 28 ... 32 are blown off here.

Die von den Abfallstücken 28..32 befreiten Zuschnitte 10 werden im Bereich der Trennstation 44 von der nachfolgenden Bahn 11 abgesondert, und zwar durch Zugwalzen 68, 69, die mit einer geringfügig größeren Geschwindigkeit angetrieben werden als die vorstehend beschriebenen Walzenpaare und damit als die Bahn 11. Durch die Geschwindigkeitsdifferenz erfolgt der Abriß im Bereich der Restverbindungen 35, 36. Der Antrieb aller beschriebenen Walzenpaare erfolgt zentral durch einen im einzelnen nicht gezeigten Motor über eine Hauptantriebswelle 70. Diese ist unmittelbar der (unteren) Zugwalze 46 zugeordnet. Von der Hauptantriebswelle 70 ausgehend wird eine Zwischenantriebswelle 71 über ein Zahnradgetriebe 72, angetrieben. Auf der Zwischenantriebswelle 71, die der Gegenwalze 48 der ersten Prägestation 39 zugeordnet ist, sitzt ein Zahnrad 73, welches die nachfolgenden Walzenpaare jeweils über ein Zwischenrad 74 und ein Antriebsrad 75 antreibt. Der Antrieb von den (unteren) Walzen auf die zugeordneten gegenüberliegenden Walzen desselben Walzenpaares erfolgt über entsprechende, lediglich in Fig. 9 als Beispiel dargestellte Zahnräder, so daß alle Walzen zwangsweise angetrieben sind.The blanks 10 freed from the waste pieces 28, 32 are separated from the subsequent web 11 in the area of the separation station 44, specifically by pulling rollers 68, 69, which are driven at a slightly higher speed than the roller pairs described above and thus as the web 11. The speed difference causes the break in the area of the remaining connections 35, 36. All of the roller pairs described are driven centrally by a motor (not shown in detail) via a main drive shaft 70. This is directly assigned to the (lower) pull roller 46. Starting from the main drive shaft 70, an intermediate drive shaft 71 is driven via a gear transmission 72. On the intermediate drive shaft 71, which is assigned to the counter roller 48 of the first embossing station 39, there is a gear 73 which drives the subsequent roller pairs via an intermediate gear 74 and a drive gear 75. The drive from the (lower) rolls to the assigned opposite rolls of the same pair of rolls takes place via corresponding gearwheels, which are only shown as an example in FIG. 9, so that all rolls are forcibly driven.

Der Hauptantriebswelle 70 ist ein Stellgetriebe 78 zugeordnet, durch das vorgegebene oder sich im Laufe des Betriebes einstellende Positionsdifferenzen zwischen der Bahn 11 einerseits und den Walzenpaaren andererseits ausgeglichen werden. Zu diesem Zweck ist die Bahn 11 mit in regelmäßigen Abständen voneinander angeordneten Druckmarken 76 versehen. Diese sind im vorliegenden Falle im Bereich des Seitenlappens 18 angeordnet. Eine über der Bahn 11 ortsfest installierte Fotozelle 77 tastet die Druckmarken 76 ab. Etwaige Stellungsdifferenzen werden von der Fotozelle 77 wahrgenommen und dem Stellgetriebe 78 zugeleitet. Dieses ist der Hauptantriebswelle 70 zugeordnet. Ein links und rechts antreibbarer Stellmotor 79, der mit der Fotozelle 77 verbunden ist, wirkt auf ein Stellrad 80, welches drehbar auf der Hauptantriebswelle 70 gelagert ist. Das Stellrad 80 ist mit einem außermittig angebrachten Zapfen 81 versehen, auf dem ein Doppelzahnrad 82 drehbar gelagert ist. Mit unterschiedlicher Anzahl von Zähnen ausgerüstete Einzelzahnräder 83 und 84 - z. B. 48 bzw. 50 Zähne - stehen in Eingriff mit Gegenzahnrädern 85 und 86 auf der Hauptantriebswelle 70. Das mit der größeren Anzahl von Zähnen - z. B. mit 50 Zähnen - ausgerüstete Gegenzahnrad 85 sitzt fest auf der Hauptantriebswelle 70, während das zweite Gegenzahnrad 86 - beispielsweise mit 48 Zähnen - mit der eigentlichen Zugwalze 46 verbunden und mit dieser drehbar auf der Hauptantriebswelle 70 gelagert ist. Gegenzahnrad 86 und Zugwalze 46 sind dabei miteinander verbunden. Der Antrieb wird demnach von der Hauptantriebswelle 70 über das erste Gegenzahnrad 85 auf das erste Einzelzahnrad 83 des Doppelzahnrades 82, von diesem auf das zweite Einzelzahnrad 84 und sodann auf das Gegenzahnrad 86 übertragen. Durch geringfügige Verstellungen des Stellrades 80, ausgelöst durch den Stellmotor 79, wird eine Verstellung der für den Vorschub verantwortlichen Zugwalzen 45,46 bewirkt und damit eine Korrektur etwaiger Relatiwerstellungen. Das Stellgetriebe 78 wirkt, wie beschrieben, ausschließlich auf die Zugwalzen 45, 46. Stellbewegungen der Zugwalzen 45,46 im Sinne eines zusätzlichen Vorschubs oder einer geringfügigen Verzögerung der Bahn 11 werden, demnach nicht auf die Walzenpaare der Arbeitsstationen übertragen.The main drive shaft 70 is assigned an actuating gear 78, by means of which predetermined position differences or those which arise during operation are compensated for between the web 11 on the one hand and the roller pairs on the other. For this purpose, the web 11 is provided with printing marks 76 arranged at regular intervals from one another. In the present case, these are arranged in the region of the side tab 18. A photocell 77 installed stationary over the web 11 scans the print marks 76. Any differences in position are perceived by the photocell 77 and fed to the actuating gear 78. This is assigned to the main drive shaft 70. A servomotor 79 which can be driven on the left and right and which is connected to the photocell 77 acts on a setting wheel 80 which is rotatably mounted on the main drive shaft 70. The adjusting wheel 80 is provided with an off-center pin 81 on which a double gear 82 is rotatably mounted. Single gears 83 and 84 equipped with different numbers of teeth - z. B. 48 or 50 teeth - are in engagement with counter gears 85 and 86 on the main drive shaft 70. That with the larger number of teeth - z. B. with 50 teeth - equipped counter gear 85 sits firmly on the main drive shaft 70, while the second counter gear 86 - for example with 48 teeth - is connected to the actual pull roller 46 and is rotatably mounted on the main drive shaft 70. Counter gear 86 and pull roller 46 are connected to each other. The drive is accordingly transmitted from the main drive shaft 70 via the first counter gear 85 to the first single gear 83 of the double gear 82, from there to the second single gear 84 and then to the counter gear 86. Slight adjustments of the adjusting wheel 80, triggered by the servomotor 79, cause an adjustment of the pulling rollers 45, 46 responsible for the feed and thus a correction of any relative positions. As described, the actuating gear 78 acts exclusively on the pull rollers 45, 46. Adjustment movements of the pull rollers 45, 46 in the sense of an additional feed or a slight deceleration of the web 11 are accordingly not transmitted to the roller pairs of the work stations.

Die erforderlichen Verstellungen der Zugwalzen 45, 46 in der einen oder anderen Richtung erfolgen während des Transports der Bahn 11 und während unveränderter Drehung der Walzenpaare in den Arbeitsstationen. Die Verstellung der Zugwalzen 45,46 kann sich je nach den abgetasteten Verschiebungen in der Relativlage der Bahn 11 in einem geringfügigen Vorschub oder auch in einer geringfügigen Verzögerung auswirken. Diese kann bei entsprechender Eingriffsstellung der Walzenpaare in den Arbeitsstationen dazu führen, daß die Bahn 11 im Bereich zwischen den Zugwalzen 45,46 sowie der Prägestation 39 geringfügig gestaucht oder gereckt wird.The required adjustments of the pulling rollers 45, 46 in one direction or the other take place during the transport of the web 11 and while the pairs of rollers in the work stations remain unchanged. The adjustment of the pull rollers 45, 46 can have a slight advance or a slight delay, depending on the displacements sensed in the relative position of the web 11. With a corresponding engagement position of the roller pairs in the work stations, this can result in the web 11 being slightly compressed or stretched in the region between the pull rollers 45, 46 and the embossing station 39.

Zu Ausgleich derartiger Relativverschiebungen der Bahn 11 über deren gesamte Länge sind die Walzenpaare in den Arbeitsstationen so ausgebildet, daß zwischen den Arbeitsbereichen auf dem Umfang der Walzen (Prägerippen, Nuten, Schneidmesser) Segmente 87, 88, 89, 90 und 91 auf wenigstens einer der Walzen eines Walzenpaares gebildet sind, in deren Bereich die Bahn 11 berührungs- bzw. antriebsfrei gefördert wird. Im Bereich der Segmente 87..91 sind die betreffenden Walzen frei von mit der Bahn 11 in Eingriff bzw. Berührung tretenden Organen (Erhöhungen etc.). Die Walzenpaare sind in ihrer Relativstellung zueiander so justiert, daß Arbeitstakte (Prägen, Schneiden, Ausdrücken von Abfallstücken) stets gleichzeitig für alle Arbeitsstationen erfolgen. Demnach kommen auch gleichzeitig die Segmente 87..91 für die Bahn 11 zur Wirkung, so daß ein geringfügiger Vorschub bzw. eine geringfügige Rückwärtsverschiebung wirksam werden, sobald die Segmente 87..91 der Bahn 11 gegenüberliegen.To compensate for such relative displacements of the web 11 over its entire length, the pairs of rollers in the work stations are designed such that segments 87, 88, 89, 90 and 91 on at least one of the work areas on the circumference of the rollers (embossing ribs, grooves, cutting knife) Rolls of a pair of rollers are formed, in the area of which the web 11 is conveyed without contact or drive. In the area of the segments 87..91, the rollers in question are free from organs (elevations, etc.) which come into contact or contact with the web 11. The roller pairs are adjusted in their relative position to each other so that work cycles (embossing, cutting, pressing out pieces of waste) always take place simultaneously for all workstations. Accordingly, segments 87..91 for web 11 also come into effect at the same time, so that a slight advance or a slight backward displacement become effective as soon as segments 87..91 lie opposite web 11.

Im Bereich zwischen den Walzenpaaren wird die Bahn 11 zwischen ortsfesten Oberführungen 92 und Unterführungen 93 gefördert.In the area between the pairs of rollers, the web 11 is conveyed between stationary top guides 92 and underpasses 93.

Claims (18)

1. Process for producing blanks (10) for packs (folding cartons, folding boxes, etc.) made of paper, cardboard or the like, by severing them from a sheet (11) of packaging material, the blanks (10) being severed from the sheet (11) during the transport of the latter, especially at a constant speed, characterized in that each blank (10) is severed from the sheet (11) in several successive part cuts (24, 25 on the one hand and 26, 27 on the other), waste pieces (29, 30, 31) being formed by the part cuts (24, 25 on the one hand and 26, 27 on the other) between intermeshing folding tabs (17,18, 20) of adjacent blanks (10) and each waste piece (29, 30, 31) being limited by one of the successive part cuts (24, 25 on the one hand and 26, 27 on the other) respectively.
2. Process according to Claim 1, characterized in that the blanks (10) are severed from the sheet (11) as a result of stamping or cutting, with the exception of residual connections (35), and the residual connections (35) are severed as a result of tearing.
3. Process according to Claim 2, characterized in that the residual connections (35) are severed as a result of a (locally) higher speed of the sheet (11).
4. Process according to Claim 2 or 3, characterized in that the transverse severing cuts (33, 34), with residual connections (35, 36) being formed, are made in the second workcycle for the severing cuts.
5. Process according to one or more of Claims 1 to 4, characterized in that folding lines (37, 38) for limiting pack walls are made as a result of embossing during the transport of the sheet (11).
6. Process according to Claim 5, characterized in that the folding lines (37, 38) are made in successive work steps, particularly in such a way that folding lines (37) extending in the longitudinal direction of the sheet (11) are made during a first work step and folding lines (38) extending in the transverse direction are made during a second work step.
7. Process according to Claims 5 or 6, characterized in that the severing cuts and the folding lines (37, 38) are made simultaneously in the region of work stations provided for this purpose.
8. Apparatus for carrying out the process according to one or more of Claims 1 to 7, having an embossing station (39, 40) and a cutting station (41,42), each having embossing rollers (47, 48; 51, 52) and cutting rollers (55, 56; 58, 59) arranged in pairs, through which the sheet (11) of packaging material can be conveyed whilst forming the blanks (10), characterized in that the cutting station is divided into a first (41) and second (42) cutting station, the first cutting station (41) following the embossing station (39, 40) and making the first part cuts (24, 25) to limit laterally the waste pieces (29, 30, 31) formed between the intermeshing folding tabs (17, 18, 20) of adjacent blanks (10), whereas the second part cuts (26, 27) for limiting the waste pieces (29, 30, 31) laterally can be made in the second cutting station (42).
9. Apparatus according to Claim 8, characterized in that after the second cutting station (42), in the region of a waste removal station (43), the waste pieces (28.. 32) can be pressed out of the plane of the sheet (11) by a form tool and can be conveyed away by means of suction air or compressed air.
10. Apparatus according to Claim 9, characterized in that the waste pieces (28..32) can be pressed downwards by an (upper) pressing-out roller (61) out of their position in the plane of the sheet (11) into a suction roller (62) designed as a hollow roller, the pressing-out roller (61) being provided with elevations corresponding to the shape of the waste pieces (28..32) and the suction roller (62) being provided with matching recesses.
11. Apparatus according to Claim 10, characterized in that the suction roller (62) is designed as a hollow roller, through which compressed air supplied in the axial direction via a hollow shaft (66) can be conveyed, thereby carrying the waste pieces (28..32) with it via an open end face (67) of the suction roller (62).
12. Apparatus according to one or more of Claims 8 to 11, characterized in that the embossing station is divided into a first (39) and second (40) embossing station, a first pair of rollers being designed as embossing rollers, in the region of the first embossing station (39), in particular with an (upper) embossing roller (47) and a (lower) mating roller (48), embossing members (embossing ribs 49) being arranged in such a way that folding lines (37) extending only in the longitudinal direction can be made in the region of the first embossing station (39), and in that an embossing roller (51) and a mating roller (52) in the second subsequent embossing station (40) are designed or equipped with embossing ribs (53) in such a way that only transversely directed folding lines (38) can be made.
13. Apparatus according to Claim 12, characterized in that the mating rollers (48, 52) are provided with grooves (50, 54) which match the embossing ribs (49, 53).
14. Apparatus according to Claim 12, characterized in that the rollers of the embossing stations (39, 40) are at a distance from one another which corresponds at least to the length of the folding lines (37) extending in the longitudinal direction.
15. Apparatus according to one or more of Claims 8 to 14, characterized in that the cutting stations (41,42) and the waste removal station (43) are followed by a severing station (44) for severing the blanks (10) from the sheet (11) as a result of the tearing of residual connections (35, 36), the severing station (44) consisting of at least two interacting drawing rollers (68, 69) which are driven at a higher speed than the conveying speed of the sheet (11).
16. Apparatus according to one or more of Claims 8 to 15, characterized in that the rollers defining the embossing and cutting stations are provided with several, especially two groups of tools (embossing ribs, grooves, cutting knives, elevations, recesses) which are distributed at equal distances from one another along the periphery of the rollers, segments (87, 88, 89, 90, 91), in the region of which the sheet (11) can be conveyed without drive contact with the rollers, being formed on the rollers in the region between the projecting tools, and furthermore the work operations being capable of being carried out simultaneously in all the work stations (39,40,41, 42, 43).
17. Apparatus according to one or more of Claims 8 to 16, characterized in that the work stations (39..44) are preceded by a pair of drawing rollers (45,46) acting as a constantly engaged drive for the sheet (11), and the drive of the drawing rollers (45, 46) can be transmitted to the rollers of the following work stations (39..44) via a main drive shaft (70).
18. Apparatus according to Claim 17, characterized in that the (continuous) conveying drive of the sheet (11, is adjustable in the region of the drawing rollers (45, 46) to adjust the relative position of the sheet (11), in particular via a regulating gear (78) which acts on the drawing rollers (45,46) and which can be controlled by a monitoring device sensing the position of the sheet (11), especially by a photocell (77) in conjunction with a printed mark (76) on the sheet (11).
EP85116139A 1985-01-10 1985-12-18 Method and device for the production of package blanks Expired EP0187323B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3500547 1985-01-10
DE19853500547 DE3500547A1 (en) 1985-01-10 1985-01-10 METHOD AND DEVICE FOR PRODUCING CUT-OUTS FOR PACKAGING

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EP0187323A1 EP0187323A1 (en) 1986-07-16
EP0187323B1 true EP0187323B1 (en) 1988-06-08

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US (1) US4715847A (en)
EP (1) EP0187323B1 (en)
JP (1) JP2506329B2 (en)
BR (1) BR8600079A (en)
CA (1) CA1259841A (en)
DE (2) DE3500547A1 (en)

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DE4401268C2 (en) * 1994-01-18 1998-04-23 Windmoeller & Hoelscher Method and device for manufacturing packaging for liquid goods
EP2755892B1 (en) * 2011-09-16 2017-08-02 Focke & Co. (GmbH & Co.) Method and device for producing cigarette packages
EP3934902A1 (en) * 2019-03-08 2022-01-12 Bobst Lyon Line for manufacturing packagings in the form of folding boxes

Also Published As

Publication number Publication date
BR8600079A (en) 1986-09-23
DE3563179D1 (en) 1988-07-14
CA1259841A (en) 1989-09-26
JPS61163839A (en) 1986-07-24
DE3500547A1 (en) 1986-07-10
EP0187323A1 (en) 1986-07-16
JP2506329B2 (en) 1996-06-12
US4715847A (en) 1987-12-29

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