EP0641631A1 - Method and machine for three-sided cutting of stacked books, brochures or the same - Google Patents

Method and machine for three-sided cutting of stacked books, brochures or the same Download PDF

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Publication number
EP0641631A1
EP0641631A1 EP94111085A EP94111085A EP0641631A1 EP 0641631 A1 EP0641631 A1 EP 0641631A1 EP 94111085 A EP94111085 A EP 94111085A EP 94111085 A EP94111085 A EP 94111085A EP 0641631 A1 EP0641631 A1 EP 0641631A1
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EP
European Patent Office
Prior art keywords
stack
cut
cutting machine
pressing
press plate
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
EP94111085A
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German (de)
French (fr)
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EP0641631B1 (en
Inventor
Horst Rathert
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.)
Kolbus GmbH and Co KG
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Kolbus GmbH and Co KG
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Publication of EP0641631A1 publication Critical patent/EP0641631A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/015—Means for holding or positioning work for sheet material or piles of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0675—Arrangements for feeding or delivering work of other than sheet, web, or filamentary form specially adapted for piles of sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0081—Cutting on three sides, e.g. trilateral trimming

Definitions

  • the invention relates to a method and an apparatus for three-sided trimming of stacks from book blocks, brochures or the like, in which side knives trim the top and bottom and a cross knife the front of the stack of material to be cut and the material to be cut is pressed against a support table during trimming .
  • the material to be cut such as stacks of book blocks, brochures or other printed products
  • a feed device aligned and held on the cutting table by a press ram.
  • the head and foot are trimmed in a first work cycle and the front cut in a second work cycle, whereupon the material to be cut is automatically ejected by an extension arm and guided out of the three-knife cutting machine by a conveyor belt.
  • Air pockets in the material to be cut reduce the compressive stress under the ram, see above that the material to be cut is more compressed in the area of the knife for the side trimming due to its linear contact than under the press ram.
  • This relatively strong compressive stress under the knife leads to the elongation of the paper up to tearing before the start of the cut and to pulling forward individual paper sheets or paper layers under the press ram, which results in hollow cut surfaces.
  • the object of the invention is to provide a three-knife cutting machine of the generic type with which the cutting quality and the effective performance can be improved.
  • the method according to the invention is characterized in that a stack of material to be cut is subjected to a pre-pressing, in that the air enclosed in the stack of material to be cut is pressed out beginning on one side of the stack under increasing pressure.
  • the stack of material to be cut can be detected and subjected to a pre-pressing during the passage, in that the enclosed air is pressed out against the direction of flow beginning on the inlet side.
  • the pressing force advantageously acts on the stack of material to be cut from both sides.
  • the air pockets present in the material to be cut can thereby be largely eliminated, so that a material stack which is highly compressed before the press ram is put in place is available for the cutting process, which significantly improves the cutting quality and permits a higher cycle sequence.
  • the effective performance of the three-knife cutting machine is increased by increasing the number of products per cutting insert.
  • a pre-pressing device which is preferably arranged directly in front of the trimming station and has endless conveying means which exert a pressing force on the stack of cut goods and act on the stack of cut goods from above and below and which exert the same speed the stack of goods to be cut can be fed via a conveyor.
  • Another device for carrying out the method is characterized by a lower press plate arranged in the feed device, preferably directly in front of the trimming station, within a conveyor system with a continuously driven upper and lower endless conveying means, as well as an upper press plate, which are actuated between an oblique to the lower press plate Opening position can be pivoted into a closing position parallel to the lower press plate by applying a pressing pressure to the working strands of the conveying means and to which the stacks of material to be cut can be fed in cycles.
  • FIG. 1 of the drawing shows a trimming station with two side knives 2, a cross knife 3 and a press ram 4, which presses a stack of cut material 1 against a support table 5 for three-sided trimming.
  • the cutting station stacks 1 of book blocks, brochures or the like are fed automatically from an insertion slide 7, which can be moved back and forth in the inlet table 6 in a longitudinal recess 6a, bearing against lateral alignment rails 8, 9 which are adjustable in size.
  • the head and foot sides are first trimmed by the two side knives 2 and then the front of the stack of cut goods is trimmed by the transverse knife 3.
  • a Vorpreßein device 10 which the individual stack 1 are fed cyclically lying. During the passage of the stacks of cut material 1 through the pre-pressing device 10, the air enclosed in the stack 1 is pressed out progressively against the direction of passage beginning on the inlet side.
  • the pre-pressing device 10 is formed by an upper and lower plate chain 11, 12 driven at the same speed and rotating, with pressing plates 13 oriented transversely to the direction of travel, which arranged on both sides of the plane of movement of the stack of cut material 1 and having chains 19, 18, which run around deflection chain wheels 15, 16 and 17, 18, 20 are articulated.
  • the chains 19, 20 are driven by a drive sprocket 25 via chains and gearwheels, not shown in detail.
  • the working strands of the two chains 19, 20 are slidably guided in the pressing zone on support rails 26, 27.
  • the articulation of the pressure plates 13 of the chains 19, 20 was provided in such a way that the surface of the pressure plates 13 is located slightly outside the pitch circle of the chain wheels 15-18, thereby preventing the stack 1 from being cut.
  • a trouble-free entry of the material to be cut 1 into the pre-pressing device 10 and also a trouble-free removal can be achieved by a wedge-shaped tapering plate chain inlet 28 and outlet 29.
  • adjusting spindles 33 on a support frame 32 of the lower plate chain 12 on the input and output sides which engage in a nut thread piece 34 of a support frame 30 of the upper plate chain 11 and are jointly motorized via drive means, not shown in detail be operated.
  • the pressing force advantageously acts from above and below on the stack of material to be cut 1, for which purpose the working strand of the lower plate chain 12 is positioned in a higher level with respect to the entry level of a feed belt 35.
  • a stack of cut material 1 to be pressed arrives via the feed belt 35 in front of an inlet lock 39 which is controlled in the path of movement by a light barrier 40 and which releases the stack of cut material 1 in accordance with the machine speed for introduction into the pre-pressing device 10.
  • a pair of feed rollers with a lower transport roller 36 driven by the drive sprocket 25 and an upper transport roller 37 which can be swung in and out via a working cylinder.
  • the stack 1 to be cut is taken over by the plate chains 11, 12 of the pre-pressing device 10 and transported forward until its front edge reaches a light barrier 43.
  • a leading stack of cut material 1 comes against the alignment rail 8, conveyed by a lower pair of transport rollers 45 driven by the plate chain drive and an upper pair of transport rollers 46 that can be pivoted on and off via working cylinders.
  • a light barrier 48 is provided, by means of which the speed of the pre-pressing device 10 is regulated in such a way that the stack of cuttings 1 hits the alignment rail 8 at a slower speed while being aligned with a side stop 50.
  • they lift up the upper trans port rollers 46 from the cutting material stack 1 and at the same time an alignment of the cutting material stack 1 takes place on the alignment rail 8 via an alignment rod 51 which can be swiveled into a vertical plane by a working cylinder 49.
  • the pressed and precisely aligned stack of cut goods 1 is gripped behind by the insertion slide 7 and transported to the cutting station of the three-knife cutting machine.
  • the pre-pressing device 10 is arranged in a straight line arrangement directly in front of the three-knife cutting machine, which is approximately enables direct feeding of the pressed stack of cut material into the cutting station.
  • the stacks 1 of cut material are fed via an indicated infeed conveyor 52 installed at right angles to the infeed conveyor 35.
  • FIG. 4 shows the pre-pressing device 10 in a modified embodiment.
  • the revolving plate chains there are fixed press plates arranged within a conveyor system 53, 54 with a lower press plate 55 arranged in a horizontal plane and a pivotable upper press plate 56 cooperating with the lower press plate.
  • the upper press plate 56 is used for trouble-free entry and exit from the pre-press device brought out of the plane of movement of the stack of material to be cut by means of the cylinder 59.
  • the upper press plate 56 can be swiveled downward from an open position inclined to the lower press plate 55 into a closed position parallel to the lower press plate 55 while simultaneously exerting a pressing pressure on the working strands of the conveyor system 53, 54 and thus on one in the effective area of the pressing plates 55, 56, the stack of sliced goods 1 transported in cycles.
  • the two press plates 55, 56 preferably have a covering 57, 58 made of an elastic material, which is useful for gentle treatment of sensitive products.
  • the distance between the conveying means 53, 54 and the pressing plates 55, 56 from one another can be changed by means of adjusting means.
  • the pressing plates 13 are replaced by a number of belts 64 oriented in the running direction at a defined distance from one another.
  • the distance between the belts 64 can serve to accommodate the back areas, for example when prepressing book blocks with a bulky back.
  • FIG. 5 shows a last embodiment variant of a pre-pressing device with a fixed lower press plate 62 as a support surface and a fixed swiveling upper press plate 63 which is brought into operative connection with the lower press plate 62.
  • a working cylinder 60 ' is provided, which brings the upper press plate 63 from an open position inclined to the lower press plate 62 into a closed position parallel to the lower press plate 62 and at the same time press pressure on a stack of cut material transported by conveyors 61 of a rotating chain system onto the lower press plate 62 1 exercises.
  • the second working cylinder 59 ′ engaging on the upper press plate 63 brings about an additional stroke of the press plate 63 for trouble-free insertion and export of the stack of cut goods 1.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Details Of Cutting Devices (AREA)
  • Nonmetal Cutting Devices (AREA)

Abstract

The invention relates to a process for the three-sided trimming of stacks of book blocks, brochures or the like, side cutters trimming the head and tail side, and a transverse cutter trimming the front side, of the stack, and said stack being pressed against a bearing table during trimming. With regard to increasing the cutting quality and performance in the case of said process, it is provided that a fed stack (1) is subjected to pre-pressing, in that the air enclosed in the stack (1) is pressed out with the progressive exertion of force, beginning on one side of the stack (1). <IMAGE>

Description

Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum dreiseitigen Beschneiden von Stapeln aus Buchblocks, Broschuren o. dgl., in denen Seitenmesser die Kopf- und Fußseite und ein Quermesser die Vorderseite des Schneidgutstapels beschneiden und der Schneidgutstapel beim Beschneiden gegen einen Auflagetisch gepreßt wird.The invention relates to a method and an apparatus for three-sided trimming of stacks from book blocks, brochures or the like, in which side knives trim the top and bottom and a cross knife the front of the stack of material to be cut and the material to be cut is pressed against a support table during trimming .

In bekannten Dreimesserschneidemaschinen dieser Bauart wird das Schneidgut, wie Stapel aus Buchblocks, Broschuren oder anderen Druckprodukten, mittels einer Zufuhreinrichtung automatisch unter die Messer geführt, ausgerichtet und von einem Preßstempel auf dem Schneidtisch gehalten. Sodann erfolgt in einem ersten Arbeitstakt der Kopf- und Fußbeschnitt und in einem zweiten Arbeitstakt der Vorderseitenbeschnitt, worauf das Schneidgut durch einen Ausleger automatisch ausgestoßen und von einem Förderband aus der Dreimesserschneidemaschine geführt wird.In known three-knife cutting machines of this type, the material to be cut, such as stacks of book blocks, brochures or other printed products, is automatically guided under the knife by means of a feed device, aligned and held on the cutting table by a press ram. Then the head and foot are trimmed in a first work cycle and the front cut in a second work cycle, whereupon the material to be cut is automatically ejected by an extension arm and guided out of the three-knife cutting machine by a conveyor belt.

Neben einer Vielzahl von variablen Faktoren, die die Schneidqualität beeinflussen, wie papierspezifische Eigenschaft, Einsatzhöhe des zu beschneidenden Stapels, Preßdruck, Messerschärfe, Messergeometrie, ist entscheidend ein von Lufteinschlüssen weitestgehend freier Schneidgutstapel. Lufteinschlüsse im Schneidgutstapel verringern die Druckspannung unter dem Preßstempel, so daß das Schneidgut im Bereich des Messers für den Seitenbeschnitt infolge seiner linienförmigen Berührung stärker zusammengedrückt wird als unter dem Preßstempel. Diese verhältnismäßig starke Druckspannung unter dem Messer führt zur Längung des Papiers bis hin zum Abriß vor Schnittbeginn sowie zum Vorziehen einzelner Papierbogen oder Papierlagen unter dem Preßstempel, wodurch sich hohle Schnittflächen ergeben. Verstärkt wird dieser Effekt bei großer Stapelhöhe und bei hoher Taktfolge, da einerseits die Preßkraft nicht beliebig heraufgesetzt werden kann, um Rückenbeschädigungen von Buchblocks oder Broschuren auszuschließen sowie im Hinblick auf Abdruckerscheinungen am Schneidgut, andererseits steht nicht genügend Zeit für das Entweichen der Luft aus dem Schneidgutstapel zur Verfügung.In addition to a large number of variable factors that influence the cutting quality, such as paper-specific properties, height of use of the stack to be trimmed, pressing pressure, knife sharpness, knife geometry, a stack of sliced goods that is largely free of air pockets is crucial. Air pockets in the material to be cut reduce the compressive stress under the ram, see above that the material to be cut is more compressed in the area of the knife for the side trimming due to its linear contact than under the press ram. This relatively strong compressive stress under the knife leads to the elongation of the paper up to tearing before the start of the cut and to pulling forward individual paper sheets or paper layers under the press ram, which results in hollow cut surfaces. This effect is intensified when there is a large stack height and with a high cycle rate, because on the one hand the pressing force cannot be increased arbitrarily in order to prevent back damage to book blocks or brochures and with regard to marks on the material to be cut, on the other hand there is not enough time for the air to escape from the stack of material to be cut to disposal.

Die Aufgabe der Erfindung besteht darin, eine Dreimesserschneidemaschine der gattungsgemäßen Art zu schaffen, mit der sich die Schneidqualität und die Effektivleistung verbessern lassen.The object of the invention is to provide a three-knife cutting machine of the generic type with which the cutting quality and the effective performance can be improved.

Zur Lösung dieser Aufgabe ist das erfindungsgemäße Verfahren gekennzeichnet dadurch, daß ein zugeführter Schneidgutstapel einer Vorpressung unterworfen wird, indem die im Schneidgutstapel eingeschlossene Luft unter fortschreitender Druckausübung beginnend an einer Seite des Stapels herausgepreßt wird.To achieve this object, the method according to the invention is characterized in that a stack of material to be cut is subjected to a pre-pressing, in that the air enclosed in the stack of material to be cut is pressed out beginning on one side of the stack under increasing pressure.

Dabei kann gemäß einem bevorzugten Verfahrensmerkmal der Schneidgutstapel erfaßt und während des Durchlaufs einer Vorpressung unterworfen werden, indem die eingeschlossene Luft entgegen der Durchlaufrichtung beginnend an der Einlaufseite herausgepreßt wird. In vorteilhafter Weise wirkt dabei die Preßkraft von beiden Seiten auf den Schneidgutstapel ein.According to a preferred feature of the method, the stack of material to be cut can be detected and subjected to a pre-pressing during the passage, in that the enclosed air is pressed out against the direction of flow beginning on the inlet side. The pressing force advantageously acts on the stack of material to be cut from both sides.

Während bisher das Pressen des Schneidgutstapels ausschließlich in der Schneidestation der Dreimesserschneidemaschine ausgeführt wurde, und zwar durch den sich vertikal absenkenden Preßstempel, wird nun erfindungsgemäß erstmals vorgeschlagen, den Schneidgutstapel bereits in der Zufuhreinrichtung einer Vorpressung zu unterwerfen, derart, daß ein fortschreitendes Herauspressen der im Stapel eingeschlossenen Luft erfolgt.While the pressing of the stack of cut material was previously carried out exclusively in the cutting station of the three-knife cutting machine, namely by the vertically lowering press ram, it is now proposed according to the invention for the first time to subject the stack of cut material to a pre-pressing already in the feed device, such that a progressive pressing out of the stack trapped air takes place.

Die im Schneidgutstapel vorhandenen Lufteinschlüsse lassen sich hierdurch weitestgehend eliminieren, so daß für den Schneidvorgang ein vor dem Aufsetzen des Preßstempels stark verdichteter Schneidgutstapel bereitsteht, was die Schneidqualität wesentlich verbessert und eine höhere Taktfolge zuläßt. Nicht zuletzt wird die Effektivleistung der Dreimesserschneidemaschine durch eine Erhöhung der Anzahl der Produkte je Schneideinsatz gesteigert.The air pockets present in the material to be cut can thereby be largely eliminated, so that a material stack which is highly compressed before the press ram is put in place is available for the cutting process, which significantly improves the cutting quality and permits a higher cycle sequence. Last but not least, the effective performance of the three-knife cutting machine is increased by increasing the number of products per cutting insert.

Ausgehend von einer Dreimesserschneidemaschine der genannten Gattung ist des weiteren zur Lösung der Aufgabe vorgesehen eine in der Zufuhreinrichtung vorzugsweise unmittelbar vor der Beschneidestation angeordnete Vorpreßeinrichtung mit auf den Schneidgutstapel von oben und unten einwirkenden mit gleicher Geschwindigkeit umlaufend antreibbaren eine Preßkraft auf den Schneidgutstapel ausübenden endlosen Fördermitteln, denen der Schneidgutstapel über eine Fördereinrichtung zuführbar ist. Eine andere Vorrichtung zur Durchführung des Verfahrens ist gekennzeichnet durch eine in der Zuführeinrichtung, vorzugsweise unmittelbar vor der Beschneidestation, innerhalb eines Fördersystems mit einem umlaufend angetriebenen oberen und unteren endlosen Fördermittel angeordnete untere Preßplatte sowie obere Preßplatte, die über Betätigungsmittel zwischen einer zur unteren Preßplatte schräg stehenden Öffnungsposition in eine zur unteren Preßplatte parallele Schließposition unter Aufbringung eines Preßdruckes auf die Arbeitstrume des Fördermittels schwenkbar ist und denen die Schneidgutstapel taktweise zuführbar sind.Starting from a three-knife cutting machine of the type mentioned, there is further provided to achieve the object a pre-pressing device, which is preferably arranged directly in front of the trimming station and has endless conveying means which exert a pressing force on the stack of cut goods and act on the stack of cut goods from above and below and which exert the same speed the stack of goods to be cut can be fed via a conveyor. Another device for carrying out the method is characterized by a lower press plate arranged in the feed device, preferably directly in front of the trimming station, within a conveyor system with a continuously driven upper and lower endless conveying means, as well as an upper press plate, which are actuated between an oblique to the lower press plate Opening position can be pivoted into a closing position parallel to the lower press plate by applying a pressing pressure to the working strands of the conveying means and to which the stacks of material to be cut can be fed in cycles.

Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous developments of the invention result from the subclaims.

Die Erfindung wird nachstehend anhand der Beschreibung von Ausführungsbeispielen unter Bezugnahme auf die Zeichnung näher erläutert. Es zeigen:

Fig. 1
eine Draufsicht auf eine Vorpreßeinrichtung in rechtwinkliger Anordnung zu einer Dreimesserschneidemaschine,
Fig. 2
die Vorpreßeinrichtung in Seitenansicht,
Fig. 3
die Vorpreßeinrichtung in einer Draufsicht in einer zur Dreimesserschneidemaschine geradlinigen Anordnung,
Fig. 4
die Vorpreßeinrichtung in einer abgewandelten Ausführungsform in Seitenansicht;
Fig. 5
die Vorpreßeinrichtung in einer weiteren abgewandelten Ausführungsform in Seitenansicht;
Fig. 6
die Vorpreßeinrichtung mit einer Ausführungsvariante des Ausführungsbeispiels gemäß Figur 1 in einer Draufsicht.
The invention is explained below with reference to the description of exemplary embodiments with reference to the drawing. Show it:
Fig. 1
a plan view of a pre-pressing device in a right-angled arrangement to a three-knife cutting machine,
Fig. 2
the pre-pressing device in side view,
Fig. 3
the pre-pressing device in a plan view in an arrangement straight to the three-knife cutting machine,
Fig. 4
the pre-pressing device in a modified embodiment in side view;
Fig. 5
the pre-pressing device in a further modified embodiment in side view;
Fig. 6
the pre-pressing device with an embodiment of the embodiment of Figure 1 in a plan view.

In Figur 1 der Zeichnung erkennt man eine Beschneidestation mit zwei Seitenmessern 2, einem Quermesser 3 sowie einem Preßstempel 4, der einen Schneidgutstapel 1 zum dreiseitigen Beschneiden gegen einen Auflagetisch 5 preßt.1 of the drawing shows a trimming station with two side knives 2, a cross knife 3 and a press ram 4, which presses a stack of cut material 1 against a support table 5 for three-sided trimming.

Der Beschneidestation werden die Schneidgutstapel 1 aus Buchblocks, Broschuren o. dgl. automatisch von einem im Einlauftisch 6 in einer Längsausnehmung 6a vor- und zurückverfahrbaren Einfuhrschieber 7 unter Anlage an seitlichen auf Format verstellbaren Ausrichtschienen 8, 9 zugeführt.The cutting station stacks 1 of book blocks, brochures or the like are fed automatically from an insertion slide 7, which can be moved back and forth in the inlet table 6 in a longitudinal recess 6a, bearing against lateral alignment rails 8, 9 which are adjustable in size.

In der Beschneidestation erfolgt in bekannter Weise, nachdem zuvor der Schneidgutstapel 1 ausgerichtet und von dem Preßstempel 4 festgehalten wird, zunächst das Beschneiden der Kopf- und Fußseite durch die beiden Seitenmesser 2 und sodann das Beschneiden der Vorderseite des Schneidgutstapels durch das Quermesser 3.In the trimming station, after the stack of cut goods 1 has been previously aligned and held by the press ram 4, the head and foot sides are first trimmed by the two side knives 2 and then the front of the stack of cut goods is trimmed by the transverse knife 3.

Erfindungsgemäß befindet sich in der Einfuhr der Dreimesserschneidemaschine rechtwinklig zur Einlaufrichtung der Schneidgutstapel 1 eine Vorpreßein richtung 10, der die einzelnen Schneidgutstapel 1 taktweise liegend zugeführt werden. Während des Durchlaufs der Schneidgutstapel 1 durch die Vorpreßeinrichtung 10 wird die im Stapel 1 eingeschlossene Luft entgegen der Durchlaufrichtung beginnend an der Einlaufseite fortschreitend herausgepreßt.According to the invention is in the import of the three-knife cutting machine at right angles to the direction of entry of the stack 1, a Vorpreßein device 10, which the individual stack 1 are fed cyclically lying. During the passage of the stacks of cut material 1 through the pre-pressing device 10, the air enclosed in the stack 1 is pressed out progressively against the direction of passage beginning on the inlet side.

Die Vorpreßeinrichtung 10 wird von einer oberen und unteren mit gleicher Geschwindigkeit umlaufend angetriebenen Plattenkette 11, 12 mit quer zur Laufrichtung orientierten Preßplatten 13 gebildet, die an beidseitig der Bewegungsebene der Schneidgutstapel 1 angeordneten um Umlenkkettenräder 15, 16 bzw. 17, 18 laufende Ketten 19, 20 angelenkt sind.The pre-pressing device 10 is formed by an upper and lower plate chain 11, 12 driven at the same speed and rotating, with pressing plates 13 oriented transversely to the direction of travel, which arranged on both sides of the plane of movement of the stack of cut material 1 and having chains 19, 18, which run around deflection chain wheels 15, 16 and 17, 18, 20 are articulated.

Der Antrieb der Ketten 19, 20 erfolgt von einem Antriebskettenrad 25 über im einzelnen nicht weiter dargestellte Ketten und Zahnräder.The chains 19, 20 are driven by a drive sprocket 25 via chains and gearwheels, not shown in detail.

Zum Aufbringen des Preßdruckes auf den Schneidgutstapel sind die Arbeitstrume der beiden Ketten 19, 20 in der Preßzone auf Stützschienen 26, 27 gleitend geführt.To apply the pressing pressure to the stack of material to be cut, the working strands of the two chains 19, 20 are slidably guided in the pressing zone on support rails 26, 27.

Die Anlenkung der Preßplatten 13 der Ketten 19, 20 wurde derart vorgesehen, daß sich die Oberfläche der Preßplatten 13 geringfügig außerhalb des Teilkreises der Kettenräder 15-18 befindet, wodurch ein Verschieben des Schneidgutstapels 1 ausgeschlossen wird.The articulation of the pressure plates 13 of the chains 19, 20 was provided in such a way that the surface of the pressure plates 13 is located slightly outside the pitch circle of the chain wheels 15-18, thereby preventing the stack 1 from being cut.

Ein störungsfreies Einlaufen des Schneidgutstapels 1 in die Vorpreßeinrichtung 10 und ebenso ein störungsfreies Herausführen läßt sich durch einen keilförmig verjüngenden Plattenketteneinlauf 28 sowie -auslauf 29 erreichen.A trouble-free entry of the material to be cut 1 into the pre-pressing device 10 and also a trouble-free removal can be achieved by a wedge-shaped tapering plate chain inlet 28 and outlet 29.

Zum Aufbringen sowie Einstellen des auf den Schneidgutstapel 1 wirkenden Preßdruckes befinden sich an einem Tragrahmen 32 der unteren Plattenkette 12 eingangs- und ausgangsseitig Stellspindeln 33, die in ein Muttergewindestück 34 eines Tragrahmens 30 der oberen Plattenkette 11 greifen und über im einzelnen nicht dargestellte Antriebsmittel gemeinsam motorisch betätigt werden.For applying and adjusting the pressing pressure acting on the material to be sliced 1 there are adjusting spindles 33 on a support frame 32 of the lower plate chain 12 on the input and output sides, which engage in a nut thread piece 34 of a support frame 30 of the upper plate chain 11 and are jointly motorized via drive means, not shown in detail be operated.

In vorteilhafter Weise wirkt die Preßkraft von oben und unten auf den Schneidgutstapel 1, wozu der Arbeitstrum der unteren Plattenkette 12 in einer bezogen auf die Einlaufebene eines Zufuhrbandes 35 höheren Ebene positioniert ist.The pressing force advantageously acts from above and below on the stack of material to be cut 1, for which purpose the working strand of the lower plate chain 12 is positioned in a higher level with respect to the entry level of a feed belt 35.

Ein zu pressender Schneidgutstapel 1 gelangt über das Zufuhrband 35 vor eine in die Bewegungsbahn von einer Lichtschranke 40 gesteuerte Einlaufsperre 39, die den Schneidgutstapel 1 in taktmäßiger Übereinstimmung mit der Maschinengeschwindigkeit für die Einfuhr in die Vorpreßeinrichtung 10 freigibt. Hierzu befindet sich zwischen dieser und dem Zufuhrband 35 ein Einzugswalzenpaar mit einer unteren vom Antriebskettenrad 25 mit angetriebenen Transportwalze 36 und einer oberen über einen Arbeitszylinder an- und abschwenkbare Transportwalze 37.A stack of cut material 1 to be pressed arrives via the feed belt 35 in front of an inlet lock 39 which is controlled in the path of movement by a light barrier 40 and which releases the stack of cut material 1 in accordance with the machine speed for introduction into the pre-pressing device 10. For this purpose, between this and the feed belt 35 there is a pair of feed rollers with a lower transport roller 36 driven by the drive sprocket 25 and an upper transport roller 37 which can be swung in and out via a working cylinder.

Von dem Zufuhrband 35 und dem Einzugswalzenpaar 36, 37 wird der Schneidgutstapel 1 durch die Plattenketten 11, 12 der Vorpreßeinrichtung 10 übernommen und solange vortransportiert bis seine Vorderkante eine Lichtschranke 43 erreicht. Gleichzeitig gelangt ein vorauslaufender Schneidgutstapel 1 gegen die Ausrichtschiene 8, gefördert von einem unteren und von dem Plattenkettenantrieb mit angetriebenen Transportwalzenpaar 45 und einem oberen über Arbeitszylinder an- und abschwenkbaren Transportwalzenpaar 46.From the feed belt 35 and the pair of feed rollers 36, 37, the stack 1 to be cut is taken over by the plate chains 11, 12 of the pre-pressing device 10 and transported forward until its front edge reaches a light barrier 43. At the same time, a leading stack of cut material 1 comes against the alignment rail 8, conveyed by a lower pair of transport rollers 45 driven by the plate chain drive and an upper pair of transport rollers 46 that can be pivoted on and off via working cylinders.

In einem definierten Abstand vor der Ausrichtschiene 8 ist eine Lichtschranke 48 vorgesehen, über die die Geschwindigkeit der Vorpreßeinrichtung 10 derart geregelt wird, daß der Schneidgutstapel 1 mit einer verlangsamten Geschwindigkeit auf die Ausrichtschiene 8 trifft unter Ausrichtung an einem Seitenanschlag 50. Während dieser Abbremsphase heben sich die oberen Trans portwalzen 46 vom Schneidgutstapel 1 ab und gleichzeitig erfolgt eine Ausrichtung des Schneidgutstapels 1 an der Ausrichtschiene 8 über eine von einem Arbeitszylinder 49 in die Bewegungsbahn einschwenkbare in lotrechter Ebene orientierte Ausrichtstange 51.At a defined distance in front of the alignment rail 8, a light barrier 48 is provided, by means of which the speed of the pre-pressing device 10 is regulated in such a way that the stack of cuttings 1 hits the alignment rail 8 at a slower speed while being aligned with a side stop 50. During this braking phase, they lift up the upper trans port rollers 46 from the cutting material stack 1 and at the same time an alignment of the cutting material stack 1 takes place on the alignment rail 8 via an alignment rod 51 which can be swiveled into a vertical plane by a working cylinder 49.

Der gepreßte und exakt ausgerichtete Schneidgutstapel 1 wird von dem Einfuhrschieber 7 hintergriffen und in die Schneidstation der Dreimesserschneidemaschine transportiert.The pressed and precisely aligned stack of cut goods 1 is gripped behind by the insertion slide 7 and transported to the cutting station of the three-knife cutting machine.

In Figur 3 der Zeichnung ist die Vorpreßeinrichtung 10 in gradliniger Anordnung unmittelbar vor der Dreimesserschneidemaschine angeordnet, was eine annähernd direkte Einfuhr des gepreßten Schneidgutstapels in die Schneidstation ermöglicht. Gemäß Pfeilrichtung werden die Schneidgutstapel 1 über ein angedeutetes im rechten Winkel zu dem Zufuhrband 35 installiertes Einlaufband 52 zugeführt.In Figure 3 of the drawing, the pre-pressing device 10 is arranged in a straight line arrangement directly in front of the three-knife cutting machine, which is approximately enables direct feeding of the pressed stack of cut material into the cutting station. In the direction of the arrow, the stacks 1 of cut material are fed via an indicated infeed conveyor 52 installed at right angles to the infeed conveyor 35.

Für das Vorpressen von Buchblocks und Broschuren, einzeln oder gestapelt, wird ein Freiraum 41 zwischen den einzelnen Plattenreihen zur Aufnahme der Rückenbereiche der Produkte erforderlich, in dem keine Pressung erfolgt. Zwangsläufig verlangt dies eine zeitliche Abstimmung der umlaufenden Plattenketten 11, 12 mit einer taktweisen Zufuhr der Produkte bzw. Produktstapel in Abhängigkeit vom Maschinentakt.For the pre-pressing of book blocks and brochures, individually or stacked, a space 41 between the individual rows of plates for receiving the back areas of the products is required, in which no pressing takes place. This inevitably requires a timing of the rotating plate chains 11, 12 with a cyclical supply of the products or product stacks depending on the machine cycle.

Die Figur 4 zeigt die Vorpreßeinrichtung 10 in einer abgewandelten Ausführungsform. Anstelle der umlaufenden Plattenketten befinden sich innerhalb eines Fördersystems 53, 54 angeordnet ortsfeste Preßplatten mit einer unteren in horizontaler Ebene angeordneten Preßplatte 55 und einer schwenkbaren mit der unteren Preßplatte zusammenwirkenden oberen Preßplatte 56. Für eine störungsfreie Einfuhr und Ausfuhr aus der Vorpreßeinrichtung wird die obere Preßplatte 56 mittels des Zylinders 59 aus der Bewegungsebene des Schneidgutstapels verbracht.FIG. 4 shows the pre-pressing device 10 in a modified embodiment. Instead of the revolving plate chains there are fixed press plates arranged within a conveyor system 53, 54 with a lower press plate 55 arranged in a horizontal plane and a pivotable upper press plate 56 cooperating with the lower press plate. The upper press plate 56 is used for trouble-free entry and exit from the pre-press device brought out of the plane of movement of the stack of material to be cut by means of the cylinder 59.

Über Arbeitszylinder 59,60 läßt sich die obere Preßplatte 56 aus einer zur unteren Preßplatte 55 schräg stehenden Öffnungsposition in eine zur unteren Preßplatte 55 parallele Schließposition abwärts schwenken unter gleichzeitiger Ausübung eines Preßdruckes auf die Arbeitstrume des Fördersystems 53, 54 und somit auf einen in den Wirkbereich der Preßplatten 55, 56 taktweise vortransportierten Schneidgutstapel 1.Via the working cylinder 59, 60, the upper press plate 56 can be swiveled downward from an open position inclined to the lower press plate 55 into a closed position parallel to the lower press plate 55 while simultaneously exerting a pressing pressure on the working strands of the conveyor system 53, 54 and thus on one in the effective area of the pressing plates 55, 56, the stack of sliced goods 1 transported in cycles.

Durch fortschreitende Abnahme des von den Preßplatten 55, 56 eingeschlossenen Winkels wird die im Schneidgutstapel 1 eingeschlossene Luft kontinuierlich beginnend an der Einlaufseite des Stapels herausgepreßt.As the angle enclosed by the pressure plates 55, 56 progressively decreases, the air enclosed in the stack of cut material 1 is pressed out continuously, beginning at the inlet side of the stack.

Die beiden Preßplatten 55, 56 weisen vorzugsweise einen Belag 57, 58 aus einem elastischen Material auf, was einer schonenden Behandlung von empfindlichen Produkten zweckdienlich ist.The two press plates 55, 56 preferably have a covering 57, 58 made of an elastic material, which is useful for gentle treatment of sensitive products.

Zum Einstellen der Preßkraft läßt sich der Abstand der Fördermittel 53, 54 sowie der Preßplatten 55, 56 zueinander über Verstellmittel verändern.To adjust the pressing force, the distance between the conveying means 53, 54 and the pressing plates 55, 56 from one another can be changed by means of adjusting means.

In einer abgewandelten Ausführungsform der Vorpreßeinrichtung in rechtwinkliger Anordnung zur Dreimesserschneidemaschine nach Figur 1 werden, wie dies aus der Figur 6 ersichtlich ist, die Preßplatten 13 ersetzt durch eine in Laufrichtung orientierte Anzahl von Riemen 64 in einem definierten Abstand zueinander. Der Abstand zwischen den Riemen 64 kann der Aufnahme der Rückenbereiche dienen, beispielsweise beim Vorpressen von Buchblocks mit stark auftragenden Rücken.In a modified embodiment of the pre-pressing device in a right-angled arrangement to the three-knife cutting machine according to FIG. 1, as can be seen from FIG. 6, the pressing plates 13 are replaced by a number of belts 64 oriented in the running direction at a defined distance from one another. The distance between the belts 64 can serve to accommodate the back areas, for example when prepressing book blocks with a bulky back.

In Figur 5 wird eine letzte Ausführungsvariante einer Vorpreßeinrichtung dargestellt mit einer ortsfesten unteren Preßplatte 62 als Auflagefläche und einer ortsfesten schwenkbaren oberen Preßplatte 63, die mit der unteren Preßplatte 62 in Wirkverbindung gebracht wird. Hierzu ist ein Arbeitszylinder 60' vorgesehen, der die obere Preßplatte 63 aus einer zur unteren Preßplatte 62 schräg stehenden Öffnungsposition in eine zur unteren Preßplatte 62 parallele Schließposition verbringt und gleichzeitig einen Preßdruck auf einen von Transporteuren 61 eines umlaufenden Kettensystems auf die untere Preßplatte 62 vortransportierten Schneidgutstapel 1 ausübt. Der zweite an der oberen Preßplatte 63 angreifende Arbeitszylinder 59' bewirkt einen zusätzlichen Hub der Preßplatte 63 für eine störungsfreie Einfuhr sowie Ausfuhr des Schneidgutstapels 1.FIG. 5 shows a last embodiment variant of a pre-pressing device with a fixed lower press plate 62 as a support surface and a fixed swiveling upper press plate 63 which is brought into operative connection with the lower press plate 62. For this purpose, a working cylinder 60 'is provided, which brings the upper press plate 63 from an open position inclined to the lower press plate 62 into a closed position parallel to the lower press plate 62 and at the same time press pressure on a stack of cut material transported by conveyors 61 of a rotating chain system onto the lower press plate 62 1 exercises. The second working cylinder 59 ′ engaging on the upper press plate 63 brings about an additional stroke of the press plate 63 for trouble-free insertion and export of the stack of cut goods 1.

Claims (15)

Verfahren zum dreiseitigen Beschneiden von Stapeln aus Buchblocks, Broschuren o. dgl., in dem Seitenmesser die Kopf- und Fußseite und ein Quermesser die Vorderseite des Schneidgutstapels beschneiden und der Schneidgutstapel beim Beschneiden gegen einen Auflagetisch gepreßt wird, dadurch gekennzeichnet, daß ein zugeführter Schneidgutstapel (1) einer Vorpressung unterworfen wird, indem die im Schneidgutstapel (1) eingeschlossene Luft unter fortschreitender Druckausübung beginnend an einer Seite des Stapels (1) herausgepreßt wird.Method for three-sided trimming of stacks from book blocks, brochures or the like, in which side knives trim the top and bottom side and a cross knife the front of the stack of material to be cut and the stack of material to be cut is pressed against a support table during trimming, characterized in that a stack of cut material supplied ( 1) is subjected to a pre-pressing, in that the air enclosed in the stack of material to be cut (1) is pressed out starting from one side of the stack (1), with increasing pressure being exerted. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß der Schneidgutstapel (1) erfaßt und während des Durchlaufs einer Vorpressung unterworfen wird, indem die eingeschlossene Luft entgegen der Durchlaufrichtung beginnend an der Einlaufseite herausgepreßt wird.A method according to claim 1, characterized in that the stack of material to be cut (1) is grasped and subjected to a pre-pressing during the passage, in that the enclosed air is pressed out against the direction of passage beginning at the inlet side. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß eine Preßkraft von beiden Seiten auf den Schneidgutstapel (1) einwirkt.Method according to claim 1 or 2, characterized in that a pressing force acts on the stack of cut material (1) from both sides. Schneidemaschine zum Durchführen des Verfahrens nach Anspruch 1 bis 3 mit einer Schneidestation mit Seitenmessern und einem Quermesser und mit einer Preßeinrichtung zum Ausüben eines Preßdruckes auf den auf dem Auflagetisch liegenden Schneidgutstapel und mit einer Zufuhreinrichtung zum taktweisen Fördern des Schneidgutstapels in die Beschneidestation, gekennzeichnet durch eine in der Zufuhreinrichtung, vorzugsweise unmittelbar vor der Beschneidestation angeordnete Vorpreßeinrichtung (10) mit auf den Schneidgutstapel (1) von oben und unten einwirkenden mit gleicher Geschwindigkeit umlaufend antreibbaren, eine Preßkraft auf den Schneidgutstapel (1) ausübenden endlosen Fördermitteln (11, 12), denen der Schneidgutstapel (1) über eine Fördereinrichtung (35) zuführbar ist.Cutting machine for performing the method according to claim 1 to 3 with a cutting station with side knives and a cross knife and with a pressing device for exerting a pressing pressure on the stack of cut goods lying on the support table and with a feed device for cyclically conveying the stack of cut goods into the trimming station, characterized by a in the feed device, preferably a pre-pressing device (10) arranged directly in front of the trimming station endless conveying means (11, 12) which can be driven at the same speed from above and below and which act on the stack of cut material (1) from above and below and to which the stack of cut material (1) can be fed via a conveyor (35). Schneidemaschine nach Anspruch 4, dadurch gekennzeichnet, daß die Fördermittel aus Plattenketten (11, 12) mit quer zur Durchlaufrichtung orientierten, in der Preßzone sich an Schienen (26, 27) abstützenden Preßplatten (13) bestehen, die an abständig zueinander liegenden um Kettenräder (15-18) geführte Ketten (19, 20) angeordnet sind.Cutting machine according to claim 4, characterized in that the conveying means consist of plate chains (11, 12) with pressing plates (13) oriented transversely to the direction of passage and supported on rails (26, 27) in the pressing zone and which are arranged around chain wheels ( 15-18) guided chains (19, 20) are arranged. Schneidemaschine nach Anspruch 5, dadurch gekennzeichnet, daß die Preßplatten (13) derart versetzt an den Ketten (19-20) angelenkt sind, daß sich ihre Oberflächen geringfügig außerhalb des Teilkreises der Kettenräder (15-18) befinden.Cutting machine according to claim 5, characterized in that the pressure plates (13) are articulated on the chains (19-20) so offset that their surfaces are located slightly outside the pitch circle of the chain wheels (15-18). Schneidemaschine zum Durchführen des Verfahrens nach Anspruch 1 bis 3, gekennzeichnet durch eine in der Zufuhreinrichtung, vorzugsweise unmittelbar vor der Beschneidestation, innerhalb eines Fördersystems mit einem umlaufend angetriebenen oberen und unteren endlosen Fördermittel (53, 54) angeordnete untere Preßplatte (55) sowie obere Preßplatte (56), die über Betätigungsmittel (59, 60) zwischen einer zur unteren Preßplatte (55) schräg stehenden Öffnungsposition und einer zur unteren Preßplatte (55) parallelen Schließposition unter Aufbringung eines Preßdruckes auf die Arbeitstrume des Fördermittels (53, 54) schwenkbar ist und denen (55, 56) der Schneidgutstapel (1) taktweise zuführbar ist.Cutting machine for carrying out the method according to claims 1 to 3, characterized by a lower press plate (55) and an upper press plate arranged in the feed device, preferably immediately before the trimming station, within a conveyor system with a rotating upper and lower endless conveying means (53, 54) (56) which can be pivoted via actuating means (59, 60) between an open position inclined to the lower press plate (55) and a closed position parallel to the lower press plate (55) while applying a pressing pressure to the working strands of the conveying means (53, 54) and to which (55, 56) the stack of cut material (1) can be fed in cycles. Schneidemaschine nach Anspruch 4 bis 7, dadurch gekennzeichnet, daß der Arbeitstrum des unteren Fördermittels (12, 54) in einer bezogen auf die Einlaufebene der Fördereinrichtung (35) höheren Ebene positioniert ist.Cutting machine according to claims 4 to 7, characterized in that the working strand of the lower conveying means (12, 54) is positioned in a higher plane with respect to the infeed plane of the conveying device (35). Schneidemaschine nach Anspruch 4 bis 8, dadurch gekennzeichnet, daß der Abstand der Plattenketten (11, 12) bzw. der Fördermittel (53, 54) mit den Preßplatten (55, 56) zueinander zum Einstellen der Preßkraft über Stellmittel (33, 34) veränderbar ist.Cutting machine according to Claims 4 to 8, characterized in that the distance between the plate chains (11, 12) or the conveying means (53, 54) with the pressing plates (55, 56) relative to one another can be changed for adjusting the pressing force via adjusting means (33, 34) is. Schneidemaschine nach Anspruch 4 bis 9, dadurch gekennzeichnet, daß die Fördermittel (11, 12; 53, 54) einen Freiraum (41) zur Aufnahme der Rückenbereiche der Schneidgutstapel (1) aufweisen.Cutting machine according to claims 4 to 9, characterized in that the conveying means (11, 12; 53, 54) have a free space (41) for receiving the back areas of the stack of goods to be cut (1). Schneidemaschine nach Anspruch 4 bis 10, dadurch gekennzeichnet, daß der Arbeitstrum des oberen Fördermittels (11, 53) einen sich keilförmig verjüngenden Einlauf (28) sowie einen sich keilförmig erweiternden Auslauf (29) aufweist.Cutting machine according to Claims 4 to 10, characterized in that the working section of the upper conveying means (11, 53) has a wedge-shaped tapering inlet (28) and a wedge-shaped widening outlet (29). Schneidemaschine nach Anspruch 5, 6 und 9 bis 11, dadurch gekennzeichnet, daß anstelle der Plattenketten (11, 12) Riemen, Rollen o. dgl. Fördermittel Verwendung finden.Cutting machine according to claim 5, 6 and 9 to 11, characterized in that instead of the plate chains (11, 12) belts, rollers or the like are used. Schneidemaschine nach Anspruch 12, dadurch gekennzeichnet, daß als Fördermittel eine Anordnung von Riemen (64) Verwendung findet, die in einem definierten Abstand zueinander positioniert sind.Cutting machine according to claim 12, characterized in that an arrangement of belts (64) which are positioned at a defined distance from one another is used as the conveying means. Schneidemaschine zur Durchführung des Verfahrens nach Anspruch 1 bis 3, gekennzeichnet durch eine in der Zufuhreinrichtung, vorzugsweise unmittelbar vor der Beschneidestation angeordnete untere Preßplatte (62) und eine obere Preßplatte (63), die über Betätigungsmittel (59', 60') zwischen einer zur unteren Preßplatte (62) schräg stehende Öffnungsposition und einer zur unteren Preßplatte (62) parallelen Schließposition unter Aufbringung eines Preßdruckes auf den Schneidgutstapel (1) schwenkbar ist und denen (62, 63) der Schneidgutstapel (1) mittels eines Förderers (61) taktweise zuführbar ist.Cutting machine for carrying out the method according to claims 1 to 3, characterized by a lower press plate (62) arranged in the feed device, preferably directly in front of the trimming station, and an upper press plate (63) which, via actuating means (59 ', 60'), between one for lower press plate (62) inclined opening position and a closed position parallel to the lower press plate (62) can be pivoted by applying a pressure to the stack of cut material (1) and to which (62, 63) the stack of cut material (1) can be fed in cycles by means of a conveyor (61) is. Schneidemaschine nach Anspruch 7 und 14, dadurch gekennzeichnet, daß die beiden Preßplatten (55, 56) einen Belag (57, 58) aus einem elastischen Material aufweisen.Cutting machine according to claim 7 and 14, characterized in that the two press plates (55, 56) have a covering (57, 58) made of an elastic material.
EP94111085A 1993-08-26 1994-07-16 Method and machine for three-sided cutting of stacked books, brochures or the same Expired - Lifetime EP0641631B1 (en)

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DE4328682 1993-08-26
DE4328682A DE4328682A1 (en) 1993-08-26 1993-08-26 Method for three-sided trimming of stacks from book blocks, brochures or the like. And cutting machine for performing the method

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CN111479678B (en) * 2017-12-15 2022-06-14 三菱重工机械系统株式会社 Corrugated box dividing device and corrugated box manufacturing device
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DE59402209D1 (en) 1997-04-30
EP0641631B1 (en) 1997-03-26
JPH07148697A (en) 1995-06-13
DE4328682A1 (en) 1995-03-02

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