EP0641631B1 - 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
EP0641631B1
EP0641631B1 EP94111085A EP94111085A EP0641631B1 EP 0641631 B1 EP0641631 B1 EP 0641631B1 EP 94111085 A EP94111085 A EP 94111085A EP 94111085 A EP94111085 A EP 94111085A EP 0641631 B1 EP0641631 B1 EP 0641631B1
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EP
European Patent Office
Prior art keywords
stack
trimmed
trimming
conveying means
pressing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94111085A
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German (de)
French (fr)
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EP0641631A1 (en
Inventor
Horst Rathert
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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 cutting machine for three-sided trimming of stacks from book blocks, brochures or the like.
  • a cutting station with side knives and with a cross knife, with a pressing device for exerting a pressing pressure on the stack of material to be cut lying on the system table and with a feed device for the cycles Conveying the stack of material to be cut into the trimming station.
  • 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.
  • 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 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.
  • 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 trimming station is automatically supplied with the stacks of cut material 1 made from book blocks, brochures or the like from an insertion slide 7, which can be moved forwards and backwards in the longitudinal table 6 in a longitudinal recess 6a, bearing against lateral alignment rails 8, 9 which are adjustable in size.
  • the head and foot side are first trimmed by the two side knives 2 and then the front of the stack of the trimmings is trimmed by the cross knife 3.
  • a pre-pressing device 10 is located in the entry of the three-knife cutting machine at right angles to the infeed direction of the stacks of cut material 1, to which the individual stacks of cut material 1 are guided in a lying manner. 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 are arranged on both sides of the plane of movement of the stack of cut material 1 and have chains 19, 18 running around deflection sprockets 15, 15 and 17, 18, respectively. 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 press plates 13 of the chains 19, 20 was provided in such a way that the surface of the press plates 13 is located slightly outside the pitch circle of the sprockets 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 with a driven transport roller 36 and an upper transport roller 37 which can be swung in and out via a working cylinder.
  • the stack of cut material 1 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 which 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 transport rollers 46 from the stack of cut material 1 and, at the same time, the stack of cut material 1 is aligned on the aligning rail 8 via an aligning rod 51 which is oriented in a vertical plane and can be pivoted into the movement path 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 immediately in front of the three-knife cutting machine, which enables the pressed stack of cut material to be introduced almost directly 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.
  • fixed press plates with a lower one are arranged within a conveyor system 53, 54 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 moved 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 pivoted 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 range 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.

Description

Die Erfindung bezieht sich auf eine Schneidemaschine zum dreiseitigen Beschneiden von Stapeln aus Buchblocks, Broschuren o. dgl. mit einer Schneidestation mit Seitenmessern und mit einem Quermesser, mit einer Preßeinrichtung zum Ausüben eines Preßdruckes auf den auf dem Anlagetisch liegenden Schneidgutstapel und mit einer Zufuhreinrichtung zum taktweisen Fördern des Schneidgutstapels in die Beschneidestation.The invention relates to a cutting machine for three-sided trimming of stacks from book blocks, brochures or the like. With a cutting station with side knives and with a cross knife, with a pressing device for exerting a pressing pressure on the stack of material to be cut lying on the system table and with a feed device for the cycles Conveying the stack of material to be cut into the trimming station.

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.

Aus der deutschen Offenlegungsschrift 20 22 951 ist eine Dreimesserschneidemaschine bekannt zum dreiseitigen Beschneiden von Stapeln aus Buchblocks mit einer mit einem Druckstück versehenen Preßplatte in der Schneidstation. Das Druckstück trägt eine Formatplatte, die durch federnde Mittel von der Preßplatte abgedrückt wird. Die Preßplatte setzt sich mit einer Kante nachgiebig auf das Schneidgut und kippt nachgiebig auf die ganze Fläche, wodurch die im Schneidgut eingeschlossene Luft herausgestrichen wird.From German published patent application 20 22 951 a three-knife cutting machine is known for three-sided cutting of stacks from book blocks with a press plate provided with a pressure piece in the cutting station. The pressure piece carries a format plate which is pressed off the press plate by resilient means. The press plate resiliently sits on the material to be cut with one edge and tilts flexibly on the entire surface, as a result of which the air trapped in the material to be cut is wiped out.

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.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.

Lufteinschlüsse im Schneidgutstapel verringern die Druckspannung unter dem Preßstempel, so daß das Schneidgut im Bereich des Messers für den Seiten beschnitt 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.Inclusions of air in the stack of material to be cut reduce the compressive stress under the press ram, so that the material to be cut in the area of the knife for the sides is compressed more as a result of 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.

Die Aufgabe wird durch die Merkmale der unabhängigen Ansprüche 1 und 4 gelöst. Vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.The object is solved by the features of independent claims 1 and 4. Advantageous developments of the invention result from the subclaims.

Während bisher das Pressen des Schneidgutstapels ausschließlich in der Schneidestation der Dreimesserschneidemaschine ausgeführt wurde, und zwar durch den sich 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 material to be cut was previously carried out exclusively in the cutting station of the three-knife cutting machine, namely by the lowering ram, it is now proposed according to the invention for the first time to subject the stack of material to be pre-pressed in the feed device in such a way that progressive pressing out of the ones included in the stack 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.

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 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 rectangular 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 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 trimming station is automatically supplied with the stacks of cut material 1 made from book blocks, brochures or the like from an insertion slide 7, which can be moved forwards and backwards in the longitudinal 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, in a known manner, after the stack 1 to be cut has been aligned beforehand and held by the press ram 4, the head and foot side are first trimmed by the two side knives 2 and then the front of the stack of the trimmings is trimmed by the cross knife 3.

Erfindungsgemäß befindet sich in der Einfuhr der Dreimesserschneidemaschine rechtwinklig zur Einlaufrichtung der Schneidgutstapel 1 eine Vorpreßeinrichtung 10, der die einzelnen Schneidgutstapel 1 taktweise liegend zu geführt 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 heraus gepreßt.According to the invention, a pre-pressing device 10 is located in the entry of the three-knife cutting machine at right angles to the infeed direction of the stacks of cut material 1, to which the individual stacks of cut material 1 are guided in a lying manner. 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, 15 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 are arranged on both sides of the plane of movement of the stack of cut material 1 and have chains 19, 18 running around deflection sprockets 15, 15 and 17, 18, respectively. 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 press plates 13 of the chains 19, 20 was provided in such a way that the surface of the press plates 13 is located slightly outside the pitch circle of the sprockets 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.To apply and adjust 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 with a driven transport roller 36 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 of cut material 1 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 which 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 Transportwalzen 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 transport rollers 46 from the stack of cut material 1 and, at the same time, the stack of cut material 1 is aligned on the aligning rail 8 via an aligning rod 51 which is oriented in a vertical plane and can be pivoted into the movement path 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 FIG. 3 of the drawing, the pre-pressing device 10 is arranged in a straight line immediately in front of the three-knife cutting machine, which enables the pressed stack of cut material to be introduced almost directly 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, fixed press plates with a lower one are arranged within a conveyor system 53, 54 Press plate 55 arranged in a horizontal plane and a pivotable upper press plate 56 cooperating with the lower press plate. For trouble-free import and export from the pre-press device, the upper press plate 56 is moved 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 working cylinders 59, 60, the upper press plate 56 can be pivoted 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 range 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 Figut 1 werden, wie dies aus der Figur 5 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. 5, 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.

Claims (10)

  1. Trimming machine for trimming stacks (1) of inner books, brochures or the like on three sides, having a trimming station with lateral knives (2) and with a transverse knife (3), having a pressing device (4) for exerting a pressure upon the stack (1) of material to be trimmed situated on the supporting table (5) and having a feed device for conveying the stack (1) of material to be trimmed in a timed manner into the trimming station, characterized by a preliminary pressing device (10) which is disposed in the feed device, preferably immediately upstream of the trimming station, for expelling air trapped in the stack (1) of material to be trimmed by progressively exerting pressure starting from one end of the stack (1) of material to be trimmed and which comprises continuous conveying means (11, 12), which act from above and from below, are drivable so as to rotate at the same speed and to which the stack (1) of material to be trimmed may be supplied by means of a conveying device (35).
  2. Trimming machine according to claim 1, characterized in that the conveying means comprise plate chains (11, 12) having pressing plates (13), which are oriented at right angles to the direction of passage, are supported in the pressing zone on rails (26, 27) and are disposed on chains (19, 20), which lie at a distance from one another and are guided around chain wheels (15-18).
  3. Trimming machine according to claim 2, characterized in that the pressing plates (13) are coupled to the chains (19-20) in such an offset manner that their surfaces lie slightly outside of the pitch circle of the chain wheels (15-18).
  4. Trimming machine for trimming stacks (1) of inner books, brochures or the like on three sides, having a trimming station with lateral knives (2) and with a transverse knife (3), having a pressing device (4) for exerting a pressure upon the stack (1) of material to be trimmed situated on the supporting table (5) and having a feed device for conveying the stack (1) of material to be trimmed in a timed manner into the trimming station, characterized by a preliminary pressing device (10) which is disposed in the feed device, preferably immediately upstream of the trimming station, for expelling air trapped in the stack (1) of material to be trimmed by progressively exerting pressure starting from one end of the stack (1) of material to be trimmed and which comprises a conveying system having a lower pressing plate (55) and an upper pressing plate (56) disposed in a rotatably driven upper and lower continuous conveying means (53, 54), of which the upper pressing plate may be swivelled by operating means (59, 60) between an opening position inclined relative to the lower pressing plate (55) and a closing position parallel to the lower pressing plate (55) while simultaneously applying a pressure upon the working runs of the conveying means (53, 54) and to which (55, 56) the stack (1) of material to be trimmed may be supplied in a timed manner in such a way that a stack (1) of material to be trimmed situated between the upper run of the lower conveying means (54) and the lower run of the upper conveying means (53) may be pressed together with the runs between the pressing plates (55, 56).
  5. Trimming machine according to claims 1 to 4, characterized in that the working run of the lower conveying means (12, 54) is positioned in a higher plane than the infeed plane of the conveying device (35).
  6. Trimming machine according to claims 1 to 5, characterized in that the distance between the pressing plates (11, 12) and/or between the conveying means (53, 54) having the pressing plates (55, 56) is variable by adjusting means (33, 34) in order to adjust the compressive force.
  7. Trimming machine according to claims 1 to 6, characterized in that the conveying means (11, 12; 53, 54) have a free space (41) for receiving the spine regions of the stack (1) of material to be trimmed.
  8. Trimming machine according to claims 1 to 7, characterized in that the working run of the upper conveying means (11, 53) has an inlet (28) narrowing in a wedge-shaped manner as well as an outlet (29) widening in a wedge-shaped manner.
  9. Trimming machine according to claim 4, characterized in that, instead of the pressing plates (11, 12), belts, rollers or similar conveying means are used.
  10. Trimming machine according to claim 9, characterized in that an arrangement of belts (64), which are positioned at a defined distance from one another, is used as conveying means.
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)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Publications (2)

Publication Number Publication Date
EP0641631A1 EP0641631A1 (en) 1995-03-08
EP0641631B1 true EP0641631B1 (en) 1997-03-26

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EP94111085A Expired - Lifetime EP0641631B1 (en) 1993-08-26 1994-07-16 Method and machine for three-sided cutting of stacked books, brochures or the same

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JP (1) JPH07148697A (en)
DE (2) DE4328682A1 (en)

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JP4514306B2 (en) 2000-10-18 2010-07-28 ホリゾン・インターナショナル株式会社 Three-way cutting machine
JP2008126325A (en) * 2006-11-17 2008-06-05 Horizon International Inc Mechanism for positioning and carrying booklet in cutter
JP5230325B2 (en) * 2007-09-28 2013-07-10 大王製紙株式会社 Laminating continuous sheet cutting device
JP4980964B2 (en) * 2008-03-18 2012-07-18 王子ネピア株式会社 Work cutting apparatus and method
WO2019116578A1 (en) * 2017-12-15 2019-06-20 三菱重工機械システム株式会社 Cardboard box dividing device and cardboard box production device
EP3711940B1 (en) 2017-12-15 2021-08-25 Mitsubishi Heavy Industries Machinery Systems, Ltd. Cardboard box dividing device and cardboard box production device
CN110027046A (en) * 2019-04-08 2019-07-19 六安市叶集区鑫瑞金属制品有限责任公司 A kind of foam cutting device of lost foam
DE102020002261A1 (en) * 2020-04-09 2021-04-29 Giesecke+Devrient Currency Technology Gmbh Method for cutting a stack of paper sheets and cutting device

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DE2022951A1 (en) * 1969-07-07 1971-01-21 Polygraph Leipzig Press plate for three-knife cutting machines
CH645294A5 (en) * 1980-03-21 1984-09-28 Grapha Holding Ag BOOK BLOCK CUTTER.
US4418594A (en) * 1981-11-13 1983-12-06 Standard Oil Company (Indiana) Bottle saw system
DE3302946C2 (en) * 1982-02-05 1986-12-04 H. Wohlenberg KG GmbH & Co, 3000 Hannover Three-knife cutting machine
US4509417A (en) * 1983-02-12 1985-04-09 E.C.H. Will (Gmbh & Co.) Apparatus for expelling air from stacks of paper sheets or the like
DE3434135C2 (en) * 1984-09-18 1995-08-10 Ernst Holz Device for cutting food, in particular meat into slices
DE3613315A1 (en) * 1986-04-19 1987-10-22 Wolfgang Mohr ARRANGEMENT FOR FEEDING STACKED, SHEET-SHAPED GOODS TO A PROCESSING STATION, IN PARTICULAR CUTTING STATION
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US4796821A (en) * 1986-07-25 1989-01-10 P. T. Panamas Cutting apparatus for living plant materials
US4984516A (en) * 1988-10-07 1991-01-15 Attilio Scalzitti Apparatus for removing fluid from overlapping sheets of material
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DE4038516C2 (en) * 1990-12-03 1994-03-31 Erwin Jenkner Process for moving strip or plate-shaped workpieces stacked flush with one another on a low-friction workpiece support, and device for carrying out this process
DE4293457T1 (en) * 1991-09-20 1994-07-21 Marquip Inc Slits of arches arranged like roof tiles

Also Published As

Publication number Publication date
JPH07148697A (en) 1995-06-13
EP0641631A1 (en) 1995-03-08
DE4328682A1 (en) 1995-03-02
DE59402209D1 (en) 1997-04-30

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