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EP1214264A1 - Device for cross cutting material strips, in particular cardboard strips - Google Patents

Device for cross cutting material strips, in particular cardboard strips

Info

Publication number
EP1214264A1
EP1214264A1 EP00974362A EP00974362A EP1214264A1 EP 1214264 A1 EP1214264 A1 EP 1214264A1 EP 00974362 A EP00974362 A EP 00974362A EP 00974362 A EP00974362 A EP 00974362A EP 1214264 A1 EP1214264 A1 EP 1214264A1
Authority
EP
European Patent Office
Prior art keywords
belt conveyor
sheet
roller
lock
cross
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.)
Granted
Application number
EP00974362A
Other languages
German (de)
French (fr)
Other versions
EP1214264B1 (en
Inventor
Guido Spix
Albert Stitz
Frank Schmid
Wolfgang Lange
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.)
Jagenberg Querschneider GmbH
Original Assignee
Jagenberg Papiertechnik GmbH
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 Jagenberg Papiertechnik GmbH filed Critical Jagenberg Papiertechnik GmbH
Publication of EP1214264A1 publication Critical patent/EP1214264A1/en
Application granted granted Critical
Publication of EP1214264B1 publication Critical patent/EP1214264B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • B65H29/6618—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed
    • B65H29/6627—Advancing articles in overlapping streams forming an overlapping stream upon transfer from a first conveyor to a second conveyor advancing at slower speed in combination with auxiliary means for overlapping articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • B65H29/62—Article switches or diverters diverting faulty articles from the main streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/08—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/176—Cardboard
    • B65H2701/1762—Corrugated
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0476—Including stacking of plural workpieces
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2033—Including means to form or hold pile of product pieces
    • Y10T83/2037—In stacked or packed relation
    • Y10T83/2046—Including means to move stack bodily
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2066—By fluid current
    • Y10T83/207—By suction means
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2094—Means to move product at speed different from work speed
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2192—Endless conveyor
    • Y10T83/2194—And means to remove product therefrom

Definitions

  • the invention relates to a device for cross cutting material webs, in particular cardboard webs, with a cross cutter device containing two knife drums equipped with transverse knives and with a sheet transport device arranged behind the cross cutter device, which has a belt conveyor for accelerating the sheets produced during cross cutting and a brake connected to them - Contains and overlap device in which a stream of flakes is generated from the sheets.
  • Cross-cutting devices that produce individual sheets from a paper or cardboard web by cross-cutting, which are then deposited on a stack, contain, as is known, a sheet transport device behind the cross-cutting device, which begins with a fast belt conveyor. Using the fast belt conveyor, the web is tightened during cross cutting and the cut sheets are accelerated so that there is a gap between them. The gap is necessary so that a braking device arranged downstream can engage the individual trailing edges of the sheet. When braking a sheet, the leading edge of the following unbraked sheet slides over its trailing edge. In this way, a shingled stream of overlapping sheets is generated, which is then placed on a stack in a stacking device.
  • a generic cross cutting device is described in DE-A-41 19 511.
  • the invention has for its object to improve a generic cross cutting device so that it has a shorter length with a structurally simplified design. This object with the features of claim 1 solved
  • the sheet transport device begins with a fast tape feeder, which is preferably very short.
  • a sheet is briefly accelerated and then released immediately so that the overlapping process can be initiated by braking.
  • the gap between two successive sheets is minimized held
  • No interruption of belt conveyors is therefore necessary for the lock entrance. This makes it possible to considerably shorten the overall length of the transport device and thus the entire cross-cutting device
  • the lower fast belt conveyor is made as short as possible and is arranged as close as possible to the knife drums.
  • the length of the transport direction is extremely short
  • a catch roller forms with the upper run of the fast belt conveyor a tapering nip in which a new start of the web is safely accepted
  • the catch roller is advantageously the inlet-side deflection roller of an upper belt conveyor
  • the fast belt conveyor is followed by only a single further lower belt conveyor, on which both the shingled stream is formed and also transported to the stacking device
  • Claim 7 contains a particularly advantageous embodiment and arrangement of an element by means of which the sheets are moved downward at their trailing edges for overlapping Claims 9 and 10 contain configurations of a cross-cutting device according to the invention, in which individual elements are designed in a structurally simple form so that the device can be opened to remove jams
  • FIG. 1 shows the side view of a cross cutting device
  • FIG. 2 shows the sheet transport device in an enlarged section
  • Figure 3 shows the area of the arch lock
  • the device shown in an overall view in FIG. 1 is used to produce cardboard sheets from a continuously supplied cardboard web 1.
  • the following components are arranged one behind the other in the web / sheet running direction (from left to right in the figures)
  • a long-cutting device 2 in which the edges of the web 1 are trimmed and, if necessary, the web 1 is divided into up to 6 individual webs, a cross-cutting device 3, a sheet transport device 4, from which the sheets produced during cross-cutting are taken over and braked Shingled stream forms, and a stacking device 5, in which the sheets required in the shingled stream are deposited on stack 6, which lie on pallets 7
  • the cross-cutting device 3 contains, in a known manner, two knife drums 8, 9 arranged one above the other, each of which is equipped with at least one cross-knife 10.
  • the web 1 is cut in a scissor-type cut by the cross-knives 10 as it passes through. sertrommeln 8, 9 stored, driven feed roller pair 1 1, the web 1 feeds the knife drums 8, 9 at the desired web speed
  • the sheet transport device 4 which is shown enlarged in FIG. 2. It contains elements for taking over the beginning of the web generated in a cross section and for tightening the web during cross cutting, for accelerated further transport of the sheet produced for a cross section by a gap to generate between two sheets, and for braking a sheet to produce a shingled stream from overlapping sheets, which is fed to the stacking device 5 at a slower transport speed
  • the sheet transport device 4 begins with the device for taking over the beginning of the web and for accelerating the sheet produced in the cross section.
  • This device consists of an upper catch roller 12, which extends from the top to the front plane, and an associated lower fast belt conveyor 13.
  • the catch roller 12 is also the Deflection roller on the inlet side of a rapidly rotating upper belt conveyor 14, which consists of a plurality of belts arranged parallel and at a distance from one another, which extend at least over the area of the maximum format length.
  • the upper belts 14 are deflected by a deflection roller 15 which is driven by a rotary drive 16 So that a gap is formed between two sheets, the fast upper belts 14 are driven at a higher speed than the speed of the incoming web 1. With this increased speed, they also drive the catch rollers 12
  • the catch roller 12 is mounted eccentrically in lateral bearing shells which can be adjusted by means of a rotary drive 17. Rotation of the bearing shells causes the catching roller 12 to be raised or lowered
  • the lower belt conveyor 13 which consists of a machine-wide belt or a plurality of parallel belts, is arranged below the catching roller 12 so that its upper demanding strand 18 forms a clamping gap with the catching roller 12 in the entry plane of the leading edges of the sheet, an incoming beginning of the web is taken over in the clamping gap and a tensile force exerted on him, which tightens the web 1 during cross-cutting.
  • the arch produced in cross-section is then raised with the Transported further speed
  • a guide plate 19 arranged in the conveying plane between the knife drums 8, 9 and the belt conveyor 13 supports the beginning of the web until it is taken over by the belt conveyor 13.
  • the belt conveyor 13 is driven with the increased speed of the upper belt conveyor 14
  • the beginning of the web and the strand 18 demanding the sheet produced therefrom is delimited by an inlet-side deflection roller 20 and by an outlet-side deflection roller 21
  • the braking and overlapping device begins with an element for moving the trailing edges of the sheet downward.
  • the element preferably consists of a suction box 22 which can be subjected to negative pressure, the upper wall of which runs parallel to and slightly below the conveying plane and has openings for suckers A continuous, non-cyclically interrupted negative pressure is generated during operation.
  • the trailing edges of the sheets are sucked in and braked by the negative pressure.
  • the downward movement of the trailing edges of the sheet can also be caused by aerodynamically acting guide plates, as described, for example, in DE-A-26 01 081
  • a lower belt conveyor 23 which extends to the stacking device 5.
  • the lower belt conveyor 23 runs at the slower depositing speed at which the sheets are deposited on the stack 6.
  • the value of the depositing speed is approximately 20%. the web speed during cross cutting, in the example approx. 80 m / min.
  • the lower runs of the upper bands 14 extend at least over the length of the sheet format on the outlet side, the effective conveying path is limited by a fixed, height-adjustable guide tube 24, which the lower Trums of the upper belt 14 are supported on the rear side and then deflected upward away from the conveying path to the deflection roller 15.
  • a fixed, height-adjustable guide tube 24 which the lower Trums of the upper belt 14 are supported on the rear side and then deflected upward away from the conveying path to the deflection roller 15.
  • idler rollers 25 Located between the upper belts 14 there are circumferentially downwardly extending, idler rollers 25 on a common axis arranged The catch rollers 25 print the leading edge of an incoming sheet downwards from the fast-running upper belts 14 onto the slower lower belts 23
  • the outlet-side deflection roller 21 of the belt conveyor 13 is arranged at a distance of less than the maximum format length, preferably less than the minimum format length, from the axis of rotation of the knife drums 8, 9 and at the same time serves as an ejection roller for the braking and overlapping device arranged subsequently
  • An ejection roller guides a sheet into a subsequent stretch area, in which it is briefly, for at least one moment, not required to be clamped in, that is to say is released.
  • this is achieved in that a path follows the deflecting roller 21 in which At the beginning, no conveying means attacks the underside of a sheet and in which the distance between the upper and lower conveying means is greater than the thickness of the sheets located between them on the outlet side, the stretching area is bounded by the catch rails 24 without clamping the sheets slow subbands 23 form a clamping gap, through which the shingled stream is guided.
  • the distance between the catching rollers 24 and the deflection roller 21 on the outlet side is thus at least a current format length
  • an arch lock is arranged, which is shown enlarged in FIG. 3.
  • the arch lock serves to discharge defective sheets, for example sheets that contain a splice point
  • the deflecting roller 21 directs the belt of the belt conveyor 13 obliquely downward to a further deflecting roller 27, from which it is returned to the inlet-side deflecting roller 20.
  • the deflecting roller 21 thus limits the entrance to the sheet lock, and the belt conveyor 13 advantageously also serves as Conveyors in the bow sluice on the outlet side, the entrance to the sluice is delimited by a guide plate 28 which is fastened to the suction chamber 22.
  • the front draw roller 32 and the belt conveyor 13 preferably have a common drive.
  • the common drive is an electric motor 33, which drives a belt 34 rotating around the deflection roller 27 and the pull roller 32.
  • the two rollers 27, 32 are each mounted on a pivotable side part 35 on each longitudinal side of the machine, the drive 33 also being fastened to a side part 35.
  • the pivot axis 36 of the side parts 35 is located somewhat below the deflection roller 21, so that the inlet-side part of the lock can be moved in the direction of the knife drum 8, 9 by a piston-cylinder unit 37 for opening.
  • a pneumatically actuated lock flap 38 is arranged above the conveying plane in the area of the lock entrance between the catch roller 12 and the suction chamber 22 and can be moved downwards into the conveying plane to deflect an arc into the lock.
  • the active position of the lock flap 38 is shown in FIG. 3.
  • the two driven drawing rollers 31, 32 are designed as chopping rollers with rotating cutting rings. A discharged sheet is crushed into chips as it passes between the two drawing rollers 31, 32, which chips are fed into a container arranged under the lock exit.
  • the shredder for discharged sheets is therefore advantageously integrated into the sheet lock and does not require its own drive.
  • All elements arranged at the beginning of the sheet transport device 4 and extending across the machine width, i.e. the upper catch roller 12 with its adjusting device 17, the lower fast belt conveyor 13, the sheet lock, the suction box 22 and the inlet-side deflection roller 39 of the slow lower belt conveyor 23 are fixed in a common carriage 40.
  • the carriage 40 is mounted in the side walls of the frame of the sheet transport device 4 and can be displaced in and against the sheet running direction.
  • the carriage 40 is displaced by means of lateral piston-cylinder units 41, which pull it from its working position as close as possible to the cross-cutting device into a position spaced therefrom in which the area between the cross-cutting device 3 and the sheet transfer device port device 4 is open. In this way, jams can be cleared both in the transverse cutting device 3 and in the inlet of the sheet transport device 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Making Paper Articles (AREA)

Abstract

A device for cross cutting a cardboard web in which, both the blade drums, a sheet transport conveyor accelerates the sheets and then the sheets are positioned to shingle the sheets on a further conveyor. The sheet transport conveyor has a rerouting roller at the outlet side of its upper pass and then extends downwardly into a sheet discharge gate through which defective sheets are effected.

Description

B E S C H R E I B U N G DESCRIPTION
Vorrichtung zum Querschneiden von Materialbahnen, inbesondere KartonbahnenDevice for cross cutting material webs, especially cardboard webs
Technisches GebietTechnical field
Die Erfindung betrifft eine Vorrichtung zum Querschneiden von Materialbahnen, insbesondere von Kartonbahnen, mit einer Querschneidereinrichtung enthaltend zwei mit Quermessern bestückte Messertrommeln und mit einer hinter der Querschneideeinrichtung angeordneten Bogentransporteinrichtung, die einen Bandförderer zum Beschleunigen der beim Querschneiden erzeugten Bögen und eine sich daran anschlie- ssende Brems- und Überlappungseinrichtung enthält, in der ein Schuppenstrom aus den Bögen erzeugt wird.The invention relates to a device for cross cutting material webs, in particular cardboard webs, with a cross cutter device containing two knife drums equipped with transverse knives and with a sheet transport device arranged behind the cross cutter device, which has a belt conveyor for accelerating the sheets produced during cross cutting and a brake connected to them - Contains and overlap device in which a stream of flakes is generated from the sheets.
Stand der TechnikState of the art
Querschneidevorrichtungen, die aus einer Papier- oder Kartonbahn durch Querschneiden einzelne Bögen herstellen, die anschliessend auf einem Stapel abgelegt werden, enthalten bekannterweise hinter der Querschneidereinrichtung eine Bogentransporteinrichtung, die mit einem schnellen Bandförderer beginnt. Mittels des schnellen Bandförderers wird die Bahn beim Querschneiden gestrafft und die geschnittenen Bögen wer- den beschleunigt, damit eine Lücke zwischen ihnen entsteht. Die Lücke ist erforderlich, damit eine nachfolgend angeordnete Bremseinrichtung an den einzelnen Bogenhinter- kanten angreifen kann. Beim Abbremsen eines Bogens schiebt sich die Vorderkante des noch ungebremsten nachfolgenden Bogens über seine Hinterkante. So wird ein Schuppenstrom von überlappt angeordneten Bögen erzeugt, der anschliessend in ei- ner Stapeleinrichtung auf einem Stapel abgelegt wird. Eine gattungsgemässe Querschneideeinrichtung ist in der DE-A-41 19 511 beschrieben.Cross-cutting devices that produce individual sheets from a paper or cardboard web by cross-cutting, which are then deposited on a stack, contain, as is known, a sheet transport device behind the cross-cutting device, which begins with a fast belt conveyor. Using the fast belt conveyor, the web is tightened during cross cutting and the cut sheets are accelerated so that there is a gap between them. The gap is necessary so that a braking device arranged downstream can engage the individual trailing edges of the sheet. When braking a sheet, the leading edge of the following unbraked sheet slides over its trailing edge. In this way, a shingled stream of overlapping sheets is generated, which is then placed on a stack in a stacking device. A generic cross cutting device is described in DE-A-41 19 511.
Darstellung der ErfindungPresentation of the invention
Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemässe Querschneidevorrichtung so zu verbessern, dass sie bei konstruktiv vereinfachter Bauweise eine geringere Länge aufweist. Diese Aufgabe mit den Merkmalen des Patentanspruchs 1 gelostThe invention has for its object to improve a generic cross cutting device so that it has a shorter length with a structurally simplified design. This object with the features of claim 1 solved
Bei der erfindungsgemassen Querschneidevorrichtung beginnt die Bogentransportein- nchtung mit einem schnellen Banderforderer, der bevorzugt sehr kurz gestaltet ist Ein Bogen wird kurz beschleunigt und anschliessend sofort losgelassen, damit durch Abbremsen der Uberlappungsvorgang eingeleitet werden kann Die gezogene Lücke zwischen zwei aufeinanderfolgende Bogen wird so gering wie möglich gehalten Unmittelbar hinter der auslaufseitigen Umlenkrolle des schnellen Bandförderers befindet sich der Eingang einer Bogenschleuse Für den Schleuseneingang ist somit keine Unterbrechung von Bandförderern erforderlich Dies ermöglicht es, die Baulange der Trans- porteinπchtung und damit der gesamten Querschneidevorrichtung erheblich zu verkurzenIn the cross-cutting device according to the invention, the sheet transport device begins with a fast tape feeder, which is preferably very short. A sheet is briefly accelerated and then released immediately so that the overlapping process can be initiated by braking. The gap between two successive sheets is minimized held Immediately behind the deflection roller of the fast belt conveyor on the exit side there is the entrance of an arch lock. No interruption of belt conveyors is therefore necessary for the lock entrance. This makes it possible to considerably shorten the overall length of the transport device and thus the entire cross-cutting device
Die Unteranspruche enthalten bevorzugte, da besonders vorteilhafte Ausgestaltungen der ErfindungThe subclaims contain preferred, since particularly advantageous, embodiments of the invention
Bei der Ausgestaltung nach Patentanspruch 2 ist der untere schnelle Bandförderer möglichst kurz gestaltet und mit möglichst geringem Abstand von den Messertrommeln angeordnet Die Baulange der Transportrichtung wird so extrem kurzIn the embodiment according to claim 2, the lower fast belt conveyor is made as short as possible and is arranged as close as possible to the knife drums. The length of the transport direction is extremely short
Nach Patentanspruch 3 bildet eine Fangwalze mit dem oberen Trum des schnellen Bandförderers einen zulaufenden Klemmspalt, in dem ein neuer Bahnanfang sicher übernommen wirdAccording to claim 3, a catch roller forms with the upper run of the fast belt conveyor a tapering nip in which a new start of the web is safely accepted
Nach Patentanspruch 4 ist die Fangwalze vorteilhaft zugleich die einlaufseitige Umlenkwalze eines oberen BandförderersAccording to claim 4, the catch roller is advantageously the inlet-side deflection roller of an upper belt conveyor
Bei der Ausgestaltung nach Anspruch 5 folgt im Anschluss an den schnellen Bandfor- derer nur ein einziger weiterer unterer Bandförderer, auf dem sowohl der Schuppenstrom gebildet und auch bis zu der Stapeleinrichtung transportiert wirdIn the embodiment according to claim 5, the fast belt conveyor is followed by only a single further lower belt conveyor, on which both the shingled stream is formed and also transported to the stacking device
Der Patentanspruch 7 enthalt eine besonders vorteilhafte Ausgestaltung und Anordnung eines Elements, mittels der die Bogen an ihren Hinterkanten für das Überlappen abwärts bewegt werden Die Patentansprüche 9 und 10 enthalten Ausgestaltungen einer erfindungsgemassen Querschneidevorrichtung, bei denen einzelne Elemente in konstruktiv einfacher Form so gestaltet sind, dass die Vorrichtung zur Staubeseitigung geöffnet werden kannClaim 7 contains a particularly advantageous embodiment and arrangement of an element by means of which the sheets are moved downward at their trailing edges for overlapping Claims 9 and 10 contain configurations of a cross-cutting device according to the invention, in which individual elements are designed in a structurally simple form so that the device can be opened to remove jams
Kurze Beschreibung der ZeichnungBrief description of the drawing
Die Zeichnung dient zur Erläuterung der Erfindung anhand eines vereinfacht dargestellten AusfuhrungsbeispielsThe drawing serves to explain the invention with reference to a simplified embodiment example
Es zeigenShow it
Figur 1 die Seitenansicht einer Querschneidevorrichtung,FIG. 1 shows the side view of a cross cutting device,
Figur 2 in einem vergrosserten Ausschnitt die Bogentransporteinπchtung undFIG. 2 shows the sheet transport device in an enlarged section
Figur 3 den Bereich der BogenschleuseFigure 3 shows the area of the arch lock
Wege zur Ausführung der ErfindungWays of Carrying Out the Invention
Die in Figur 1 in einer Gesamtansicht dargestellte Vorrichtung dient zur Herstellung von Kartonbogen aus einer kontinuierlich zugefuhrten Kartonbahn 1 In Bahn-/Bogenlauf- richtung (in den Figuren von links nach rechts) sind folgende Komponenten hintereinander angeordnetThe device shown in an overall view in FIG. 1 is used to produce cardboard sheets from a continuously supplied cardboard web 1. The following components are arranged one behind the other in the web / sheet running direction (from left to right in the figures)
Eine Langschneideeinrichtung 2, in der die Rander der Bahn 1 beschnitten und gegebenenfalls die Bahn 1 in bis zu 6 Einzelbahnen aufgeteilt wird, eine Querschneideein- πchtung 3, eine Bogentransporteinnchtung 4, von der die beim Querschneiden hergestellten Bogen übernommen und abgebremst werden, wobei sich ein Schuppenstrom bildet, und eine Stapeleinrichtung 5, in der die in dem Schuppenstrom zugeforderten Bogen auf Stapel 6 abgelegt werden, die auf Paletten 7 liegenA long-cutting device 2, in which the edges of the web 1 are trimmed and, if necessary, the web 1 is divided into up to 6 individual webs, a cross-cutting device 3, a sheet transport device 4, from which the sheets produced during cross-cutting are taken over and braked Shingled stream forms, and a stacking device 5, in which the sheets required in the shingled stream are deposited on stack 6, which lie on pallets 7
Die Querschneideeinπchtung 3 enthalt auf bekannte Weise zwei übereinander angeordnete Messertrommeln 8, 9, die jeweils mit zumindest einem Quermesser 10 bestuckt sind Von den Quermessern 10 wird die Bahn 1 beim Durchlauf in einem Sche- renschnitt durchgetrennt Ein im Gestell der Querschneideeinrichtung 3 vor den Mes- sertrommeln 8, 9 gelagertes, angetriebenes Vorschubwalzenpaar 1 1 fuhrt die Bahn 1 den Messertrommeln 8, 9 mit der gewünschten Bahngeschwindigkeit zuThe cross-cutting device 3 contains, in a known manner, two knife drums 8, 9 arranged one above the other, each of which is equipped with at least one cross-knife 10. The web 1 is cut in a scissor-type cut by the cross-knives 10 as it passes through. sertrommeln 8, 9 stored, driven feed roller pair 1 1, the web 1 feeds the knife drums 8, 9 at the desired web speed
Unmittelbar hinter der Querschneideeinrichtung 3 ist die Bogentransporteinπchtung 4 angeordnet, die in Figur 2 vergrossert dargestellt ist Sie enthalt Elemente zum Übernehmen des bei einem Querschnitt erzeugten Bahnanfangs und zum Straffen der Bahn beim Querschneiden, zum beschleunigten Weitertransport des bei einem Querschnitt erzeugten Bogens, um eine Lücke zwischen zwei Bogen zu erzeugen, und zum Abbremsen eines Bogens zur Herstellung eines Schuppenstroms aus überlappenden Bogen, der mit verlangsamter Transportgeschwindigkeit der Stapeleinrichtung 5 zugeführt wirdImmediately behind the cross cutting device 3 is the sheet transport device 4, which is shown enlarged in FIG. 2. It contains elements for taking over the beginning of the web generated in a cross section and for tightening the web during cross cutting, for accelerated further transport of the sheet produced for a cross section by a gap to generate between two sheets, and for braking a sheet to produce a shingled stream from overlapping sheets, which is fed to the stacking device 5 at a slower transport speed
Die Bogentransporteinπchtung 4 beginnt mit der Einrichtung zur Übernahme des Bahnanfangs und zur Beschleunigung des beim Querschnitt erzeugten Bogens Diese Einrichtung besteht aus einer oberen Fangwalze 12, die von oben umfänglich bis in Forderebene reicht, und einem zugehörigen unteren schnellen Bandförderer 13 Die Fangwalze 12 ist zugleich die einlaufseitige Umlenkwalze eines schnell umlaufenden oberen Bandförderers 14, der aus mehreren, parallel mit Abstand voneinander angeordneten Bandern besteht, die sich zumindest über den Bereich der maximalen For- matlange erstrecken Auslaufseitig werden die Oberbander 14 von einer Umlenkwalze 15 umgelenkt, die von einem Drehantrieb 16 angetrieben wird Damit sich eine Lücke zwischen zwei Bogen bildet, werden die schnellen Oberbander 14 mit einer gegenüber der Geschwindigkeit der einlaufenden Bahn 1 erhöhten Geschwindigkeit angetrieben Mit dieser erhöhten Geschwindigkeit treiben sie auch die Fangwaize 12 anThe sheet transport device 4 begins with the device for taking over the beginning of the web and for accelerating the sheet produced in the cross section.This device consists of an upper catch roller 12, which extends from the top to the front plane, and an associated lower fast belt conveyor 13. The catch roller 12 is also the Deflection roller on the inlet side of a rapidly rotating upper belt conveyor 14, which consists of a plurality of belts arranged parallel and at a distance from one another, which extend at least over the area of the maximum format length. On the outlet side, the upper belts 14 are deflected by a deflection roller 15 which is driven by a rotary drive 16 So that a gap is formed between two sheets, the fast upper belts 14 are driven at a higher speed than the speed of the incoming web 1. With this increased speed, they also drive the catch rollers 12
Um ihre umfängliche Position verschiedenen Kartondicken anpassen zu können, ist die Fangwalze 12 exzentrisch in seitlichen Lagerschalen gelagert, die mittels eines Drehantriebs 17 verstellt werden können. Eine Drehung der Lagerschalen bewirkt ein Anheben oder Absenken der Fangwalze 12In order to be able to adapt its circumferential position to different cardboard thicknesses, the catch roller 12 is mounted eccentrically in lateral bearing shells which can be adjusted by means of a rotary drive 17. Rotation of the bearing shells causes the catching roller 12 to be raised or lowered
Der aus einem maschinenbreiten Band oder mehreren parallelen Bandern bestehende untere Bandförderer 13 ist unterhalb der Fangwalze 12 so angeordnet, dass sein oberer fordernder Trum 18 in der Einlaufebene der Bogenvorderkanten mit der Fangwalze 12 einen Klemmspalt bildet in dem Klemmspalt wird ein einlaufender Bahnanfang übernommen und eine Zugkraft auf ihn ausgeübt, die die Bahn 1 beim Querschneiden strafft Der beim Querschnitt hergestellte Bogen wird anschliessend mit der erhöhten Geschwindigkeit weitertransportiert Ein in der Forderebene zwischen den Messertrommeln 8, 9 und dem Bandförderer 13 angeordnetes Leitblech 19 stutzt den Bahnanfang, bis er vom Bandförderer 13 übernommen wird Der Bandförderer 13 wird mit der erhöhten Geschwindigkeit des oberen Bandförderers 14 angetrieben Sein in der Forderebene verlaufender, den Bahnanfang und den daraus hergestellten Bogen fordernder Trum 18 wird von einer einlaufseitigen Umlenkrolle 20 und von einer auslauf- seitigen Umlenkrolle 21 begrenztThe lower belt conveyor 13, which consists of a machine-wide belt or a plurality of parallel belts, is arranged below the catching roller 12 so that its upper demanding strand 18 forms a clamping gap with the catching roller 12 in the entry plane of the leading edges of the sheet, an incoming beginning of the web is taken over in the clamping gap and a tensile force exerted on him, which tightens the web 1 during cross-cutting. The arch produced in cross-section is then raised with the Transported further speed A guide plate 19 arranged in the conveying plane between the knife drums 8, 9 and the belt conveyor 13 supports the beginning of the web until it is taken over by the belt conveyor 13. The belt conveyor 13 is driven with the increased speed of the upper belt conveyor 14 The beginning of the web and the strand 18 demanding the sheet produced therefrom is delimited by an inlet-side deflection roller 20 and by an outlet-side deflection roller 21
Mit geringem Abstand hinter der Umlenkrolle 21 beginnt die Brems- und Uberlap- pungseinπchtung mit einem Element zur Abwartsbewegung der Bogenhinterkanten Bevorzugt besteht das Element aus einem mit Unterdruck beaufschlagbaren Saugkasten 22, dessen obere Wand parallel mit etwas Abstand unterhalb der Forderebene verlauft und Säugöffnungen aufweist Bevorzugt wird wahrend des Betriebs ein kontinuierlicher, nicht taktweise unterbrochener Unterdruck erzeugt Von dem Unterdruck werden den Hinterkanten der Bogen angesaugt und abgebremst Die Abwartsbewegung der Bogenhinterkanten kann auch durch aerodynamisch wirkende Leitbleche bewirkt werden, wie sie beispielsweise in der DE-A-26 01 081 beschrieben sindAt a short distance behind the deflection roller 21, the braking and overlapping device begins with an element for moving the trailing edges of the sheet downward. The element preferably consists of a suction box 22 which can be subjected to negative pressure, the upper wall of which runs parallel to and slightly below the conveying plane and has openings for suckers A continuous, non-cyclically interrupted negative pressure is generated during operation. The trailing edges of the sheets are sucked in and braked by the negative pressure. The downward movement of the trailing edges of the sheet can also be caused by aerodynamically acting guide plates, as described, for example, in DE-A-26 01 081
Im Anschluss an das Element zur Abwartsbewegung der Bogenhinterkanten folgt ein unterer Bandförderer 23, der bis an die Stapeleinrichtung 5 reicht Der untere Bandförderer 23 lauft mit der langsameren Ablagegeschwindigkeit, mit der die Bogen auf dem Stapel 6 abgelegt werden Der Wert der Ablagegeschwindigkeit betragt ca 20% der Bahngeschwindigkeit beim Querschneiden, im Beispiel ca 80 m/min Beim Abbremsen eines Bogens schiebt sich die Vorderkante eines nachfolgenden, noch schneller lau- fenden Bogens über seine Hinterkante Es entsteht so ein Schuppenstrom von sich überlappenden Bogen, der mit der langsamen Ablagegeschwindigkeit auf den Unterbandern 23 weitergefordert wirdFollowing the element for the downward movement of the trailing edges of the sheet is followed by a lower belt conveyor 23 which extends to the stacking device 5. The lower belt conveyor 23 runs at the slower depositing speed at which the sheets are deposited on the stack 6. The value of the depositing speed is approximately 20%. the web speed during cross cutting, in the example approx. 80 m / min. When a sheet is braked, the front edge of a subsequent sheet, which runs even faster, slides over its trailing edge. This creates a stream of overlapping sheets that overlaps the lower belts with the slow depositing speed 23 is required
Um einen Bogen wahrend des Abbremsens im Uberlappungsbereich an seiner Ober- seite sicher zu fuhren, reichen die unteren Trums der Oberbander 14 zumindest über die Lange des Bogenformats Auslaufseitig wird die wirksame Forderstrecke durch ein feststehendes, in der Hohe verstellbares Fuhrungsrohr 24 begrenzt, das die unteren Trums der Oberbander 14 an der Ruckseite abstutzt und anschliessend nach oben von der Forderstrecke weg zu der Umlenkrolle 15 umlenkt Unmittelbar hinter dem Fuh- rungsrohr 24 sind zwischen den Oberbandern 14 umfänglich nach unten über diese hinausreichende, freilaufend gelagerte Fangrollen 25 auf einer gemeinsamen Achse angeordnet Die Fangrollen 25 drucken die Vorderkante eines einlaufenden Bogens von den schnell laufenden Oberbandern 14 weg nach unten auf die langsameren Unterbander 23 Sie bilden mit den Unterbandern 23 einen Klemmspalt, durch den der erzeugte Schuppenstrom gefordert wirdIn order to safely guide a sheet on its upper side during braking in the overlap area, the lower runs of the upper bands 14 extend at least over the length of the sheet format on the outlet side, the effective conveying path is limited by a fixed, height-adjustable guide tube 24, which the lower Trums of the upper belt 14 are supported on the rear side and then deflected upward away from the conveying path to the deflection roller 15. Immediately behind the guide tube 24, between the upper belts 14 there are circumferentially downwardly extending, idler rollers 25 on a common axis arranged The catch rollers 25 print the leading edge of an incoming sheet downwards from the fast-running upper belts 14 onto the slower lower belts 23
Da die Position des Fuhrungsrohr 24 und der Fangrollen 25 der Bogenlänge angepasst werden muss, sind diese Elemente in einem Wagen 26 gelagert, der über den erforderlichen Bereich in und gegen Bogenlaufπchtung verstellt werden kannSince the position of the guide tube 24 and the catch rollers 25 must be adapted to the length of the sheet, these elements are mounted in a carriage 26 which can be adjusted over and over the required area in and against the sheet running direction
Die auslaufseitige Umlenkrolle 21 des Bandförderers 13 ist mit einem Abstand von weniger als der maximalen Formatiange, bevorzugt von weniger als der minimalen Formatlange, von der Rotationsachse der Messertrommeln 8, 9 angeordnet und dient zugleich als Ausstossrolle zu der nachfolgend angeordneten Brems- und Uberiap- pungseinπchtung Eine Ausstossrolle leitet einen Bogen in einen nachfolgenden Strek- kenbereich, in dem er kurzzeitig, für zumindest einen Augenblick, nicht eingespannt gefordert, also losgelassen wird Erreicht wird dies nach der Erfindung dadurch, dass im Anschluss an die Umlenkrolle 21 eine Strecke folgt, in der zu Beginn kein Fordermittel an der Unterseite eines Bogens angreift und in der der Abstand zwischen den oberen und unteren Fordermitteln grosser ist als die Dicke der zwischen ihnen befind - chen Bogen Auslaufseitig wird der Streckenbereich ohne Einspannung der Bogen von den Fangrolien 24 begrenzt, die mit den langsamen Unterbandern 23 einen Klemmspalt bilden, durch den der Schuppenstrom gefuhrt wird Der Abstand der Fangrollen 24 von der auslaufseitigen Umlenkrolle 21 betragt somit zumindest eine aktuelle FormatlangeThe outlet-side deflection roller 21 of the belt conveyor 13 is arranged at a distance of less than the maximum format length, preferably less than the minimum format length, from the axis of rotation of the knife drums 8, 9 and at the same time serves as an ejection roller for the braking and overlapping device arranged subsequently An ejection roller guides a sheet into a subsequent stretch area, in which it is briefly, for at least one moment, not required to be clamped in, that is to say is released. According to the invention, this is achieved in that a path follows the deflecting roller 21 in which At the beginning, no conveying means attacks the underside of a sheet and in which the distance between the upper and lower conveying means is greater than the thickness of the sheets located between them on the outlet side, the stretching area is bounded by the catch rails 24 without clamping the sheets slow subbands 23 form a clamping gap, through which the shingled stream is guided. The distance between the catching rollers 24 and the deflection roller 21 on the outlet side is thus at least a current format length
Zwischen der auslaufseitigen Umlenkrolle 21 des schnellen Bandförderers 13 und dem Saugkasten 22 ist eine Bogenschleuse angeordnet, die vergrossert in Figur 3 dargestellt ist Die Bogenschleuse dient zum Ausschleusen schadhafter Bogen, beispielsweise von Bogen, die eine Splicestelle enthaltenBetween the outlet-side deflection roller 21 of the fast belt conveyor 13 and the suction box 22, an arch lock is arranged, which is shown enlarged in FIG. 3. The arch lock serves to discharge defective sheets, for example sheets that contain a splice point
Zur Bildung der Schleuse lenkt die Umlenkrolle 21 das Band des Bandförderers 13 schräg nach unten zu einer weiteren Umlenkrolle 27, von der es zu der einlaufseitigen Umienkrolle 20 zurückgeführt wird Die Umlenkrolle 21 begrenzt so den Eingang der Bogenschleuse, und der Bandförderer 13 dient vorteilhaft zugleich als Forderer in der Bogenschleuse Auslaufseitig wird der Eingang zur Schleuse von einem Leitblech 28 begrenzt, das an der Saugkammer 22 befestigt ist Eine weitere Leitrolle 29 unterhalb des Saugkastens 22 und ein nachfolgendes Leitblech 30 führen gemeinsam mit dem Band 13 einen ausgeschleusten Bogen zu zwei angetriebenen Zugwalzen 31 , 32 am Schleusenausgang, von denen er aus der Querschneidemaschine gezogen wird.To form the lock, the deflecting roller 21 directs the belt of the belt conveyor 13 obliquely downward to a further deflecting roller 27, from which it is returned to the inlet-side deflecting roller 20. The deflecting roller 21 thus limits the entrance to the sheet lock, and the belt conveyor 13 advantageously also serves as Conveyors in the bow sluice on the outlet side, the entrance to the sluice is delimited by a guide plate 28 which is fastened to the suction chamber 22. Another guide roller 29 below of the suction box 22 and a subsequent guide plate 30, together with the belt 13, guide a discharged sheet to two driven pull rollers 31, 32 at the lock exit, from which it is pulled out of the cross cutting machine.
Bevorzugt weisen die vordere Zugwalze 32 und der Bandförderer 13 ein gemeinsamen Antrieb auf. Im vorliegenden Beispiel ist der gemeinsame Antrieb ein Elektromotor 33, der einen die Umlenkwalze 27 und die Zugwalze 32 umlaufenden Riemen 34 antreibt. Um die Schleuse zur Staubeseitigung öffnen zu können, sind die beiden Walzen 27, 32 an jeder Längsseite der Maschine jeweils an einem schwenkbaren Seitenteil 35 gela- gert, wobei an einem Seitenteil 35 auch der Antrieb 33 befestigt ist. Die Schwenkachse 36 der Seitenteile 35 befindet sich etwas unterhalb der Umlenkrolle 21 , so dass der einlaufseitige Teil der Schleuse von einer Kolben-Zyiinder-Einheit 37 zum Öffnen in Richtung zu den Messertrommel 8, 9 bewegt werden kann. Oberhalb der Förderebene ist im Bereich des Schleuseneingangs zwischen der Fangwalze 12 und der Saugkam- mer 22 eine pneumatisch betätigbare Schleusenklappe 38 angeordnet, die zum Ablenken eines Bogens in die Schleuse nach unten in die Förderebene bewegt werden kann. Die aktive Position der Schleusenklappe 38 ist in Figur 3 dargestellt.The front draw roller 32 and the belt conveyor 13 preferably have a common drive. In the present example, the common drive is an electric motor 33, which drives a belt 34 rotating around the deflection roller 27 and the pull roller 32. In order to be able to open the lock to remove jams, the two rollers 27, 32 are each mounted on a pivotable side part 35 on each longitudinal side of the machine, the drive 33 also being fastened to a side part 35. The pivot axis 36 of the side parts 35 is located somewhat below the deflection roller 21, so that the inlet-side part of the lock can be moved in the direction of the knife drum 8, 9 by a piston-cylinder unit 37 for opening. A pneumatically actuated lock flap 38 is arranged above the conveying plane in the area of the lock entrance between the catch roller 12 and the suction chamber 22 and can be moved downwards into the conveying plane to deflect an arc into the lock. The active position of the lock flap 38 is shown in FIG. 3.
Bei einer bevorzugten Ausführungsform sind die beiden angetriebenen Zugwalzen 31 , 32 als Schnitzelwalzen mit umlaufenden Schneidringen ausgestaltet. Ein ausgeschleuster Bogen wird beim Durchlauf zwischen den beiden Zugwalzen 31 , 32 zu Schnitzeln zerkleinert, die einem unter dem Schleusenausgang angeordneten Behälter zugeführt werden. Das Schnitzelwerk für ausgeschleuste Bögen ist somit vorteilhaft in die Bogenschleuse integriert und benötigt keinen eigenen Antrieb.In a preferred embodiment, the two driven drawing rollers 31, 32 are designed as chopping rollers with rotating cutting rings. A discharged sheet is crushed into chips as it passes between the two drawing rollers 31, 32, which chips are fed into a container arranged under the lock exit. The shredder for discharged sheets is therefore advantageously integrated into the sheet lock and does not require its own drive.
Alle am Anfang der Bogentransporteinrichtung 4 angeordneten und sich quer über die Maschinenbreite erstreckenden Elemente, also die obere Fangwalze 12 mit ihrer Ver- stelleinrichtung 17, der untere schnelle Bandförderer 13, die Bogenschleuse, der Saugkasten 22 und die einlaufseitige Umlenkwalze 39 des langsamen unteren Band- förderers 23 sind in einem gemeinsamen Wagen 40 befestigt. Der Wagen 40 ist begrenzt in und gegen Bogenlaufrichtung verschiebbar in den Seitenwänden des Gestells der Bogentransporteinrichtung 4 gelagert. Die Verschiebung des Wagens 40 erfolgt mittels seitlicher Kolben-Zylinder-Einheiten 41 , die ihn von seiner Arbeitsposition möglichst nahe an der Querschneideeinrichtung in eine davon beabstandete Position zie- hen, in der der Bereich zwischen der Querschneideeinrichtung 3 und der Bogentrans- porteinrichtung 4 geöffnet ist. So lassen sich Staus sowohl in der Querschneideeinrichtung 3 als auch im Einlauf der Bogentransporteinrichtung 4 beseitigen. All elements arranged at the beginning of the sheet transport device 4 and extending across the machine width, i.e. the upper catch roller 12 with its adjusting device 17, the lower fast belt conveyor 13, the sheet lock, the suction box 22 and the inlet-side deflection roller 39 of the slow lower belt conveyor 23 are fixed in a common carriage 40. The carriage 40 is mounted in the side walls of the frame of the sheet transport device 4 and can be displaced in and against the sheet running direction. The carriage 40 is displaced by means of lateral piston-cylinder units 41, which pull it from its working position as close as possible to the cross-cutting device into a position spaced therefrom in which the area between the cross-cutting device 3 and the sheet transfer device port device 4 is open. In this way, jams can be cleared both in the transverse cutting device 3 and in the inlet of the sheet transport device 4.

Claims

PATENTANSPRUCHEPATENT CLAIMS
1 Vorrichtung zum Querschneiden von Matenalbahnen (1 ), insbesondere von Kartonbahnen, mit1 device for cross-cutting material webs (1), in particular cardboard webs, with
- einer Querschneideeinrichtung (3), die zwei mit Quermessern (10) bestuckte Messertrommeln (8, 9) enthalt und einer hinter der Querschneideeinrichtung (3) angeordneten Bogentransporteinπch- tung (4), die einen Bandförderer (13) zum Beschleunigen der beim Querschneiden erzeugten Bogen und eine sich daran anschliessende Brems- und Uberlappungs- einπchtung enthalt, in der ein Schuppenstrom aus den Bogen erzeugt wird, dadurch gekennzeichnet, dass die Traπsporteinπchtung (4) mit einem unteren Bandförderer (13) beginnt, dessen oberer, fordernder Trum (18) auslaufseitig von einer Umienkrolle (21 ) begrenzt wird,- A cross cutting device (3), which contains two knife drums (8, 9) equipped with cross knives (10) and a sheet transport device (4) arranged behind the cross cutting device (3), which produces a belt conveyor (13) for accelerating the cross cutting Includes sheet and a subsequent braking and overlap device in which a shingled stream is generated from the sheets, characterized in that the sports device (4) begins with a lower belt conveyor (13), the upper, demanding strand (18) of which is bounded on the outlet side by an outer roller (21),
- die als Ausstossrolle einen Bogen zu einem nachfolgenden Streckenbereich leitet, in dem er kurzzeitig nicht eingespannt gefordert wird, und- which, as an ejection roller, directs an arc to a subsequent route area in which it is not required to be clamped for a short time, and
- die den Eingang einer Bogenschleuse begrenzt, wobei das nach unten umgelenkte Band des Bandförderers (13) zugleich als Forderer in der Bogenschleuse dient- Which limits the entrance to an arch lock, the downwardly deflected belt of the belt conveyor (13) also serving as a conveyor in the arch lock
22
Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der Abstand der auslaufseitigen Umlenkrolle (21 ) von den Rotationsachsen der Messertrommeln (8, 9) weniger als die maximale Formatlange, bevorzugt weniger als die minimale Formatlange, betragtApparatus according to claim 1, characterized in that the distance of the deflection roller (21) on the outlet side from the axes of rotation of the knife drums (8, 9) is less than the maximum format length, preferably less than the minimum format length
33
Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass oberhalb des unteren Bandförderers (13) eine Fangwalze (12) angeordnet ist, die mit dem fordern- den Trum (18) des Bandförderers (13) einen Klemmspalt bildetApparatus according to claim 1 or 2, characterized in that a catch roller (12) is arranged above the lower belt conveyor (13), which forms a clamping gap with the demanding strand (18) of the belt conveyor (13)
44
Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass die Fangwalze (12) zugleich die einlaufseitige Umlenkwalze eines oberen Bandförderers (14) ist, der sich zumindest über den Bereich der maximalen Formatlange erstreckt Device according to claim 3, characterized in that the catch roller (12) is at the same time the inlet-side deflection roller of an upper belt conveyor (14) which extends at least over the area of the maximum format length
5.5th
Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass mit Abstand hinter dem unteren Bandförderer (13) ein weiterer, langsamerer Bandförderer (23) angeordnet ist, der bis an die Stapeleinrichtung (5) reicht und der mit Fangrollen (24) einen Klemmspalt bildet, der den Streckenbereich ohne Einspannung der Bögen begrenzt.Device according to one of claims 1 to 4, characterized in that a further, slower belt conveyor (23) is arranged at a distance behind the lower belt conveyor (13), which extends to the stacking device (5) and one with catch rollers (24) Clamping gap forms, which limits the route area without clamping the arches.
6.6th
Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass mit geringem Abstand hinter der auslaufseitigen Umlenkrolle (21 ) des Bandförderers (13) die Brems- und Überlappungseinrichtung mit einem Element zur Abwärtsbewegung der Bogenhinterkanten beginnt.Device according to one of claims 1 to 5, characterized in that the braking and overlapping device begins with an element for the downward movement of the trailing edges of the sheet at a short distance behind the deflection roller (21) of the belt conveyor (13) on the outlet side.
7. Vorrichtung nach einem der Anspruch 6, dadurch gekennzeichnet, dass das Element zur Abwärtsbewegung der Bogenhinterkanten ein mit Unterdruck beaufschlagbarer Saugkasten (22) ist, dessen obere Wand parallel mit etwas Abstand unterhalb der Förderebene verläuft und Saugöffnungen aufweist.7. Device according to one of claim 6, characterized in that the element for the downward movement of the trailing edge of the sheet is a suction box (22) which can be acted upon by a vacuum, the upper wall of which runs parallel at a certain distance below the conveying plane and has suction openings.
8.8th.
Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass am Ausgang der Bogenschleuse zwei angetriebene Zugwalzen (31 , 32) angeordnet sind, die als Schnitzelwalzen ausgebildet sind.Device according to one of claims 1 to 7, characterized in that two driven pull rollers (31, 32) are arranged at the exit of the arc lock, which are designed as chips rollers.
9.9th
Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der einlaufseitige Teil der Bogenschleuse zum Öffnen der Schleuse in Richtung zu den Messertrommeln (8, 9) schwenkbar gelagert ist.Device according to one of claims 1 to 8, characterized in that the inlet-side part of the arch lock for opening the lock is pivotally mounted in the direction of the knife drums (8, 9).
10.10th
Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass alle am Anfang der Bogentransporteinrichtung (4) angeordneten und sich quer über die Maschinenbreite erstreckenden Elemente in einem gemeinsamen Wagen (40) befestigt sind, der begrenzt in und gegen Bogenlaufrichtung verschiebbar in den Seitenwänden des Gestells der Bogentransporteinrichtung (4) gelagert ist. Device according to one of claims 1 to 9, characterized in that all the elements arranged at the beginning of the sheet transport device (4) and extending across the machine width are fastened in a common carriage (40) which is displaceable in and against the sheet running direction in the side walls of the frame of the sheet transport device (4) is mounted.
EP00974362A 1999-09-21 2000-09-01 Device for cross cutting material strips, in particular cardboard strips Expired - Lifetime EP1214264B1 (en)

Applications Claiming Priority (3)

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DE19945114A DE19945114A1 (en) 1999-09-21 1999-09-21 Device for cross-cutting material webs, in particular cardboard webs
DE19945114 1999-09-21
PCT/EP2000/008534 WO2001021517A1 (en) 1999-09-21 2000-09-01 Device for cross cutting material strips, in particular cardboard strips

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EP1214264B1 EP1214264B1 (en) 2005-03-09

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EP (1) EP1214264B1 (en)
JP (1) JP3616765B2 (en)
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DE (2) DE19945114A1 (en)
ES (1) ES2238322T3 (en)
WO (1) WO2001021517A1 (en)

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US6883409B1 (en) 2005-04-26
ES2238322T3 (en) 2005-09-01
DE19945114A1 (en) 2001-03-22
WO2001021517A1 (en) 2001-03-29
ATE290505T1 (en) 2005-03-15
DE50009740D1 (en) 2005-04-14
JP3616765B2 (en) 2005-02-02
JP2003509313A (en) 2003-03-11
EP1214264B1 (en) 2005-03-09

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