EP1647373B1 - Method for cutting more sides of a printed product - Google Patents
Method for cutting more sides of a printed product Download PDFInfo
- Publication number
- EP1647373B1 EP1647373B1 EP20040405649 EP04405649A EP1647373B1 EP 1647373 B1 EP1647373 B1 EP 1647373B1 EP 20040405649 EP20040405649 EP 20040405649 EP 04405649 A EP04405649 A EP 04405649A EP 1647373 B1 EP1647373 B1 EP 1647373B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- cut
- printed products
- pressing
- thickness
- 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.)
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- 238000005520 cutting process Methods 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims description 23
- 238000003825 pressing Methods 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims description 62
- 238000005259 measurement Methods 0.000 claims description 5
- 238000009826 distribution Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 230000032258 transport Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
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- 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
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
- B26D1/09—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type with a plurality of cutting members
-
- 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
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
-
- 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
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/02—Means for moving the cutting member into its operative position for cutting
-
- 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
- B26D7/04—Means for holding or positioning work with clamping means providing adjustable clamping pressure
-
- 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
-
- 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
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
- B26D5/14—Crank and pin means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/444—Tool engages work during dwell of intermittent workfeed
- Y10T83/4523—With means to vary number of work-feed increments between tool strokes
Definitions
- the invention relates to a method according to the preamble of claim 1 and a cutting device according to the preamble of claim 8 for trimming a plurality of edges of a printed product.
- three-knife trimmer are known in which the material to be cut is cut against cutting strips.
- Such three-knife trimmers are able to truncate in the same position a stack consisting of at least one book or book block completely and on all three sides.
- the cut-to-cut material to be cut is aligned on a cutting table and is trimmed on the head and foot as well as on the front.
- the cutting sequence can also be reversed.
- the material to be cut is pressed against the cutting table with a press ram, so that it can not shift due to the cutting forces that occur.
- a press ram To ensure that the geometry of the material to be cut remains stable during the cutting process, it must be ensured that all air that is still freshly bound is removed Cutting material is located, can escape. Air that is in the cut during the cutting process is harmful in several ways. On the one hand, the friction value between the blades is reduced by the action of the air as air cushion, whereby the layers can shift each other during the cutting process. Secondly, because of the trapped air, the cut material is too thick, which increases the deflection of the cut material in the area of the cuts, so that the upper layers of the cut material are cut longer. Both effects affect the quality of the cut.
- a method for cutting cut material is for example from DE 42 06 329 A known.
- a pressing device is used, in which a drive for pressing elements, taking into account the lowest building mass according to a predetermined characteristic is adjustable.
- the lifting movement of the pressing element is preselected depending on the application height of the material to be cut.
- a Presskraft- and Hub Ounaus angles in which an operator enters the desired pressing force and lifting height.
- the DE 30 11 090 A discloses a cutting device with a mechanically driven pressing device, in which the pressing force is hydraulically adjustable.
- the pressing device is automatically positioned according to the respective preceding crop height.
- the invention has for its object to provide a method and a device for trimming multiple edges of a printed product, which allows a higher quality of cut.
- the object is achieved in a method having the features of claim 1 and in a device having the features of claim 8.
- Cutting device 1 shown here has a feed device 2 indicated here, a feed device 7, as well as a cutting device 17 for printed products, mainly book block or books.
- the feeding device 2 has a per se known conveying means with which the printed products 5 are fed in accordance with the direction of arrow 60 to a stacking device 4 and form a stack of printed products 5 there.
- the material to be cut 10 consists of at least one printed product 5.
- Printed products are for example magazines, catalogs, paperbacks or the like. Printed matter.
- the printed products produced within a production may vary in thickness.
- the maximum set to the height of the smallest thickness of the material to be cut 10 pusher 3 pushes the material to be cut from the stacking device 4 in the feeder 7, which consists essentially of a lower take-off roll 9 and an upper take-off roll 8.
- Both take-off rollers 8, 9 are by the engine 43 and drive means 44 driven.
- the motor 43 is connected via the line 45 to a control device 30.
- the lower take-off roller 9 is fixedly connected to the machine frame (not shown), while the upper take-off roller 8 can be moved vertically in guides 13.
- the force required for the promotion of the material to be cut 10 in the direction of the arrow 15 is generated by a compression spring 12.
- the vertical position of the upper take-off roll 8 is detected by a connection 14 by a measuring device 11.
- the measuring device 11 is connected by a signal line 32 to the control device 30.
- the cut material 10 after it has left the feeding device 7 in the direction of the cutting device 17, is conveyed to the cutting table 18 of the cutting device 17 by a conveying means 42 (not shown in more detail but known per se). Thereafter, the pusher 3 moves back to its original position and is ready to deport the next material to be cut 10.
- the material to be cut 10 On the cutting table 18, the material to be cut 10 is positively positioned by means not shown here alignment in the longitudinal and transverse directions and then pressed by a punch 19 against the cutting table 18 and thus fixed.
- the ram 19 is disposed at the lower end of a spindle 20 which is drivingly connected to a servo motor 21 controlled by the servo drive 29 via the line 35.
- the servo drive 29 is connected via the signal line 34 to the sensor 22, which detects the position of the ram 19. By turning the spindle 20, the punch 19 is moved up or down.
- the servo drive 29 is connected to the control device 30 via the signal lines 36, 37. If the material to be cut 10 pressed on the cutting table 18 and thus fixed, this is then with a front knife 23 at the front and then cut with two side knives 24 on the head and on the foot. The order of cuts can also be reversed, head and foot before front trim.
- the front blade 23 moves vertically in the directions of the double arrow 25, while the two side blades 24 move in the directions of the double arrow 26 during the cutting operation. These directions of movement are in Fig. 1 indicated by the dashed lines 27 and 28.
- the cut material 10 is cut in a processing cycle.
- the guided blades 23 and 24 are driven by cranks 46, 47 via the linkages 48, 49.
- the cranks 46, 47 in turn are driven by the motor 50 to which they are connected via the drive means 51.
- the motor 50 is connected by the line 52 to the control device 30. It is obvious to choose the motors 43, 50 as servomotors. In this case, a servo drive is connected between the motors 43, 50 and the control device 30. If the material to be cut 10 is cut and the pressure is released by lifting the ram 19, the material to be cut 10 is transported away from the cutting table 18 by means of a removal device, not shown.
- the way transport device can be formed in a known manner as a slider, gripper or conveyor belt system.
- a subsequent material to be cut 10 is conveyed simultaneously with the discharge of the cut material to be cut 10.
- a sensor 31 is provided, which is connected via a signal line 33 to the control device 30.
- the individual processing steps thus include the feeding of the material to be cut 10 by pushing off the stacking device 4 and transferring the material to be cut 10 into the cutting device 17, the pressing of the material to be cut 10 on the cutting table 18 by means of press ram 19, the execution of the front section with the front blade 23 and the Stepberough by the side knife 24 and the final release of the ram 19 from the cutting material 10th
- These steps are in the Fig. 2 showing a processing cycle over the duration T, illustrated by the curves 38 to 41 and in dependence on the machine angle M.
- the curve 38 shows the feeding of the material to be cut 10 from the stacking device 4 to the cutting table 18 between a machine angle of 130 ° to 260 ° on the transport path W. Shortly before the material to be cut 10 arrives in the cutting position on the cutting table 18, the ram 19 begins according to the curve 39 to reduce the pressing stroke D and reaches its lowest position on the cutting material 10 at about 300 °.
- the curve 40 shows the movement S F of the front knife 23.
- cutting begins, for example, about 30 ° later, at about 330 °.
- the lower end position of the front blade is reached at 0 °, from where the front blade 23 immediately after the return stroke to the upper end position begins.
- the movement of the side knives according to the curve 41 is analogous to the movement of the front knife, but in the present example phase-shifted by 110 °. This prevents a collision of the knives 23, 24.
- the time available when cutting a thin relative to a thick material to be cut 10 for the pressing process is now according to Fig. 2 from 0.21 T to 0.30 T substantially increased. Due to the longer pressing time, the air present in the material to be cut 10 can escape to a greater extent. This results in a much more stable stack due to a higher friction between the individual sheets. As already mentioned, this has a positive effect on the quality of the cut.
- the adaptation of the pressing movement to the different thickness D D or D d of the material to be cut 10 is merely an example here. Alternatively, for example, the time gained for the extension of the alignment process or the transport of the cut material 10 may be used.
- the proportion of the cutting process on one processing cycle is now reduced in favor of the remaining processing steps. Significantly more time is available for the remaining and quality-relevant processing steps. This additional time can be distributed to the other processing steps.
- the pressing time is 1.19 T versus 0.60 T with proportional distribution according to the diagram in Fig. 3 , With a material to be cut 10 with a comparatively large thickness D D still results in a comparatively long pressing time of 1.11 T. Due to this significantly extended pressing time correspondingly much air can be pressed out of the material to be cut.
- the thickness of a cutting material 10 consisting of a plurality of printed products 5 can vary within a certain range, it is advantageous to know the effective relative thickness S R of the material to be cut 10 before the pressing process, and thus optimally and continuously adjust the processing steps for each processing cycle to be able to. This is achieved on the basis of values previously determined in a calibration process and a continuous measurement of the thickness of the material to be cut 10 in the area of the feed device 7.
- the coordination of the drives is made by the control device 30, which is connected via the lines 37,45,52 with the drives or motors.
- the required measured values and signals are received by the control device 30 via the signal lines 32, 33, 36.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nonmetal Cutting Devices (AREA)
- Control Of Cutting Processes (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Details Of Cutting Devices (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Anspruchs 1 und eine Schneideinrichtung gemäß dem Oberbegriff des Anspruchs 8 zum Beschneiden mehrerer Kanten eines Druckproduktes .The invention relates to a method according to the preamble of claim 1 and a cutting device according to the preamble of
Zum Schneiden von Schneidgut, beispielsweise Broschürenstapel, Buchblocks oder dergleichen, sind Dreischneider bekannt, bei denen das Schneidgut gegen Schneidleisten geschnitten wird. Solche Dreischneider sind in der Lage, in der gleichen Position einen Stapel, der aus wenigstens einem Buch bzw. Buchblock besteht, komplett und auf allen drei Seiten zu beschneiden. Dazu befindet sich das zu beschneidende, eingespannte Schneidgut ausgerichtet auf einem Schneidtisch und wird an Kopf und Fuss sowie an der Front beschnitten. Je nach Ausführung des Dreischneiders kann die Schnittfolge auch umgekehrt sein.For cutting material to be cut, for example, brochures, book blocks or the like, three-knife trimmer are known in which the material to be cut is cut against cutting strips. Such three-knife trimmers are able to truncate in the same position a stack consisting of at least one book or book block completely and on all three sides. For this purpose, the cut-to-cut material to be cut is aligned on a cutting table and is trimmed on the head and foot as well as on the front. Depending on the design of the three-knife trimmer, the cutting sequence can also be reversed.
Während dem Schneidvorgang wird das Schneidgut mit einem Pressstempel gegen den Schneidtisch gepresst, damit es sich aufgrund der auftretenden Schneidkräfte nicht verschieben kann. Damit die Geometrie des Schneidgutes während dem Schneidvorgang stabil bleibt, muss sichergestellt werden, dass vorgängig alle Luft, die sich noch im frisch gebundenen Schneidgut befindet, entweichen kann. Luft, die sich während des Schneidvorganges im Schneidgut befindet, ist in mehreren Hinblicken schädlich. Einerseits wird der Reibwert zwischen den Blättern durch die Wirkung der Luft als Luftkissen vermindert, wodurch sich die Lagen während des Schneidvorganges gegenseitig verschieben können. Zweitens ist aufgrund der eingeschlossenen Luft das Schneidgut zu dick, was die Einfederung des Schneidgutes im Bereich der Schnitte vergrössert, so dass die oberen Lagen des Schneidgutes länger geschnitten werden. Durch beide Effekte wird die Schnittqualität beeinträchtigt.During the cutting process, the material to be cut is pressed against the cutting table with a press ram, so that it can not shift due to the cutting forces that occur. To ensure that the geometry of the material to be cut remains stable during the cutting process, it must be ensured that all air that is still freshly bound is removed Cutting material is located, can escape. Air that is in the cut during the cutting process is harmful in several ways. On the one hand, the friction value between the blades is reduced by the action of the air as air cushion, whereby the layers can shift each other during the cutting process. Secondly, because of the trapped air, the cut material is too thick, which increases the deflection of the cut material in the area of the cuts, so that the upper layers of the cut material are cut longer. Both effects affect the quality of the cut.
Ein Verfahren zum Beschneiden von Schneidgut ist beispielsweise aus der
Weiter offenbart die
Die
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren sowie eine Einrichtung zum Beschneiden mehrerer Kanten eines Druckproduktes zu schaffen, das eine höhere Schnittqualität ermöglicht.The invention has for its object to provide a method and a device for trimming multiple edges of a printed product, which allows a higher quality of cut.
Die Aufgabe ist bei einem Verfahren mit den Merkmalen des Anspruchs 1 sowie bei einer Einrichtung mit den Merkmalen des Anspruchs 8 gelöst.The object is achieved in a method having the features of claim 1 and in a device having the features of
Anschliessend wird die Erfindung unter Bezugnahme auf die Zeichnung, auf die bezüglich aller in der Beschreibung nicht näher erwähnten Einzelheiten verwiesen wird, anhand eines Ausführungsbeispiels erläutert. In der Zeichnung zeigen:
- Fig. 1
- schematisch eine Ansicht einer erfindungsgemässen Schneideinrichtung,
- Fig. 2
- ein Diagramm, das bei maximal möglicher Taktzahl bei einem Verarbeitungszyklus die Schritte des Transportes, der Pres- sung, des Front- und des Kopf-/Fussschnittes zeigt,
- Fig. 3
- ein Diagramm gemäss
Fig. 2 , jedoch mit doppelter Zykluszeit, - Fig. 4
- ein Diagramm gemäss
Fig. 3 , mit verlängerter Presszeit und - Fig. 5
- ein Diagramm zur Illustration von Bauschigkeit und Abhängigkeit der Dicke von der Presskraft zur Ermittlung der Federkennlinie des Schneidgutes.
- Fig. 1
- 1 is a schematic view of a cutting device according to the invention;
- Fig. 2
- a diagram showing the maximum possible number of cycles in a processing cycle, the steps of transport, the pres- solution, of the front and the head / foot cut,
- Fig. 3
- a diagram according to
Fig. 2 but with twice the cycle time, - Fig. 4
- a diagram according to
Fig. 3 , with extended press time and - Fig. 5
- a diagram illustrating the bulkiness and dependence of the thickness of the pressing force to determine the spring characteristic of the material to be cut.
Die in
Der maximal auf die Höhe der kleinsten Dicke des Schneidgutes 10 eingestellte Abschieber 3 schiebt das Schneidgut aus der Stapelvorrichtung 4 in die Zuführvorrichtung 7, die im Wesentlichen aus einer unteren Abzugrolle 9 und einer oberen Abzugrolle 8 besteht. Beide Abzugrollen 8, 9 werden durch den Motor 43 und Antriebsmittel 44 angetrieben. Der Motor 43 ist über die Leitung 45 mit einer Steuervorrichtung 30 verbunden. Die untere Abzugrolle 9 ist ortsfest mit dem Maschinengestell (nicht dargestellt) verbunden, während sich die obere Abzugrolle 8 in Führungen 13 vertikal bewegen lässt. Die für die Förderung des Schneidgutes 10 erforderliche Kraft in Richtung des Pfeils 15 wird durch eine Druckfeder 12 erzeugt. Die vertikale Position der oberen Abzugrolle 8 wird durch eine Verbindung 14 durch eine Messvorrichtung 11 erfasst. Die Messvorrichtung 11 ist durch eine Signalleitung 32 mit der Steuervorrichtung 30 verbunden. Das Schneidgut 10 wird, nachdem es die Zuführvorrichtung 7 in Richtung der Schneidvorrichtung 17 verlassen hat, mit einem nicht näher dargestellten, aber an sich bekannten Fördermittel 42 auf den Schneidtisch 18 der Schneidvorrichtung 17 gefördert. Danach bewegt sich der Abschieber 3 wieder in seine Ausgangslage zurück und ist bereit, das nächste Schneidgut 10 abzuschieben.
Auf dem Schneidtisch 18 wird das Schneidgut 10 mittels hier nicht gezeigten Ausrichtmitteln in Längs- und Querrichtung formschlüssig positioniert und anschliessend durch einen Pressstempel 19 gegen den Schneidtisch 18 gepresst und somit fixiert. Der Pressstempel 19 ist am unteren Ende einer Spindel 20 angeordnet, die mit einem durch den Servoantrieb 29, über die Leitung 35 gesteuerten Servomotor 21, antriebsverbunden ist. Der Servoantrieb 29 ist über die Signalleitung 34 mit dem Sensor 22, der die Position des Pressstempels 19 erfasst, verbunden. Durch Drehen der Spindel 20 wird der Pressstempel 19 nach oben oder unten bewegt. Der Servoantrieb 29 ist über die Signalleitungen 36, 37 mit der Steuervorrichtung 30 verbunden. Ist das Schneidgut 10 auf dem Schneidtisch 18 gepresst und somit fixiert, wird dieses anschliessend mit einem Frontmesser 23 an der Front und darauf mit zwei Seitenmessern 24 am Kopf sowie am Fuss beschnitten. Die Reihenfolge der Schnitte kann auch umgekehrt, Kopf- und Fuss- vor Frontbeschnitt sein. Das Frontmesser 23 bewegt sich in den Richtungen des Doppelpfeiles 25 vertikal, während die beiden Seitenmesser 24 sich in den Richtungen des Doppelpfeiles 26 beim Schneidvorgang bewegen. Diese Bewegungsrichtungen sind in
Ist das Schneidgut 10 geschnitten und die Pressung durch Anheben des Pressstempels 19 gelöst, wird das Schneidgut 10 mit einer nicht gezeigten Wegtransportvorrichtung vom Schneidtisch 18 wegbefördert.
Die Wegtransportvorrichtung kann in bekannter Weise als Schieber-, Greifer oder Transportbandsystem ausgebildet sein. Vorzugsweise wird gleichzeitig mit dem Ausfördern des geschnittenen Schneidgutes 10 ein nachfolgendes Schneidgut 10 eingefördert. Zur Ermittlung des Maschinenwinkels M ist ein Sensor 31 vorgesehen, der über eine Signalleitung 33 mit der Steuervorrichtung 30 verbunden ist.
Die einzelnen Verarbeitungsschritte umfassen somit das Zuführen des Schneidgutes 10 durch Abschieben von der Stapelvorrichtung 4 und Ueberführen des Schneidgutes 10 in die Schneidvorrichtung 17, das Pressen des Schneidgutes 10 auf den Schneidtisch 18 mittels Pressstempel 19, die Ausführung des Frontschnittes mit dem Frontmesser 23 sowie den Seitenbeschnitt durch die Seitenmesser 24 und das abschliessende Lösen des Pressstempels 19 vom Schneidgut 10.
Diese Schritte sind in der
Die Kurve 38 zeigt die Zuführung des Schneidgutes 10 von der Stapelvorrichtung 4 zum Schneidtisch 18 zwischen einem Maschinenwinkel von 130° bis 260° auf dem Transportweg W. Kurz bevor das Schneidgut 10 in der Schneidposition auf dem Schneidtisch 18 eintrifft, beginnt sich der Pressstempel 19 gemäss der Kurve 39 um den Presshub D zu senken und erreicht seine unterste Position auf dem Schneidgut 10 bei etwa 300°. Die Kurve 40 zeigt die Bewegung SF des Frontmessers 23. Dieses beginnt sich bei etwa 270° zu senken und beginnt, kurz nachdem der Pressstempel seine untere Endlage erreicht hat, mit dem Schneiden eines dicken Schneidgutes 10 der Dicke DD, kurz nach 300°. Bei dünnem Schneidgut der Dicke Dd beginnt das Schneiden beispielsweise etwa 30° später, bei ca. 330°. Die untere Endlage des Frontmessers wird bei 0° erreicht, von wo das Frontmesser 23 unmittelbar anschliessend den Rückhub in die obere Endlage beginnt. Die Bewegung der Seitenmesser nach der Kurve 41 ist analog zur Bewegung des Frontmessers, jedoch im vorliegenden Beispiel um 110° phasenverschoben. Damit wird eine Kollision der Messer 23, 24 verhindert. Der totale Hub SF des Frontmessers 23 und SS der Seitenmesser 24 ist unabhängig von allen anderen Parametern stets gleich lang.
Sobald das Schneiden durch die Seitenmesser 24 erfolgt ist, wird gemäss Kurve 39 die Pressung beendet und das geschnittene Schneidgut 10 vom Schneidtisch 18 wegbefördert. Gleichzeitig wird das nächste Schneidgut 10 zugeführt und der eben beschriebene Verarbeitungszyklus wiederholt. Die in
Alternativ kann beispielsweise die gewonnene Zeit für die Verlängerung des Ausrichtvorgangs oder des Transports des Schneidgutes 10 verwendet werden.
Wird der Schneidvorgang mit dem Frontmesser 23 und den Seitenmessern 24 bei allen Betriebsbedingungen mit maximaler Geschwindigkeit durchgeführt, so ergibt dies weitere Vorteile. Dies wird nachfolgend anhand der
The maximum set to the height of the smallest thickness of the material to be cut 10
On the cutting table 18, the material to be cut 10 is positively positioned by means not shown here alignment in the longitudinal and transverse directions and then pressed by a
If the material to be cut 10 is cut and the pressure is released by lifting the
The way transport device can be formed in a known manner as a slider, gripper or conveyor belt system. Preferably, a subsequent material to be cut 10 is conveyed simultaneously with the discharge of the cut material to be cut 10. To determine the machine angle M, a
The individual processing steps thus include the feeding of the material to be cut 10 by pushing off the stacking device 4 and transferring the material to be cut 10 into the cutting
These steps are in the
The
Once the cutting is done by the
Alternatively, for example, the time gained for the extension of the alignment process or the transport of the
If the cutting operation with the
Als Erstes muss die Schneideinrichtung 1 auf die Abmessungen der Druckprodukte resp. des Schneidgutes eingestellt werden.First, the cutting device 1 on the dimensions of the printed products resp. be set of the cutting material.
Unter Umständen müssen sogar Teile wie beispielsweise der Schneidtisch 18 oder der Pressstempel 19 ausgetauscht werden. Der Pressstempel 19 wird zur Erfassung des 0-Punktes auf den Schneidtisch 18 abgesenkt und das Messsystem des Servoantriebes 29 geeicht. Ein in dem Diagramm nach
- Relative Dickenmessung eines Schneidgutes 10 durch Messung der Distanz SR der
8,9Abzugsrollen mit der Messvorrichtung 11, bei der für den Abzugvorgang benötigten Kraft FR und Abspeichern des Messwerts SR(0) inder Steuervorrichtung 30, die zu diesem Zweck über dieSignalleitung 32mit der Messvorrichtung 11 verbunden ist. - Fördern des Schneidgutes 10 auf
den Schneidtisch 18, wobei der Pressstempel 19 sich in einer oberen Lage befindet. - Absenken des Pressstempels 19 auf die Dicke DL und Abspeichern des Messwertes DL(0) in
der Steuervorrichtung 30. Diese Dicke entsprichtdem zugeführten Schneidgut 10, bevor die Luft ausgepresst ist. Bei dieser Dicke erfolgt die ersteBerührung von Pressstempel 19 und Schneidgut 10. Die Erkennung dieser Position kann visuell durch den Bediener oder mittels optoelektronischen Sensoren erfolgen. Der Messwert der Position des Pressstempels 19 kann amServoantrieb 29 abgefragt werden, der über dieSignalleitung 34mit dem Sensor 22 desServomotors 21 verbunden ist. - Aufbau der Presskraft F2, die mindestens der in der Produktion benötigten Presskraft entsprechen soll und Messung der Dicke D2(0)
- Aufbau der Presskraft F1, die wesentlich kleiner als die Presskraft F2 sein soll und Messung der Dicke D1 und Abspeichern des Messwerts D1(0)
- Relative thickness measurement of a material to be cut 10 by measuring the distance S R of the take-off rollers 8.9 with the measuring
device 11, at the required force F R for the withdrawal process and storing the measured value S R (0) in thecontrol device 30, for this purpose on theSignal line 32 is connected to the measuringdevice 11. - Conveying the material to be cut 10 on the cutting table 18, wherein the
pressing die 19 is in an upper position. - Lowering of the
ram 19 to the thickness D L and storing the measured value D L (0) in thecontrol device 30. This thickness corresponds to the supplied cuttingmaterial 10 before the air is squeezed out. In this thickness, the first contact of the 19 and 10 cutting material takes place. The detection of this position can be done visually by the operator or by means of optoelectronic sensors. The measured value of the position of thepunch press ram 19 can be interrogated on theservo drive 29, which is connected via thesignal line 34 to thesensor 22 of theservomotor 21. - Structure of the pressing force F 2 , which should at least correspond to the pressing force required in production and measurement of the thickness D 2 (0)
- Structure of the pressing force F 1 , which should be much smaller than the pressing force F2 and measurement of the thickness D 1 and storing the measured value D 1 (0)
Der Aufbau einer bestimmten Kraft am Pressstempel erfolgt über den Aufbau eines entsprechenden Drehmomentes am Servomotor 21 durch den Servoantrieb 29. Mit Hilfe der Punkte P1(0) und P2(0) lassen sich die Steigung der Federkennlinie nach der Formel C = (F2 - F1) / (D2 (0) - D1(0)) und der Punkt P0(0) berechnen. Der Eichvorgang muss lediglich am ersten Schneidgut 10 durchgeführt werden, da die einmal ermittelte Federkennlinie C als konstant betrachtet werden kann, weil die Differenzen der Dicke SR innerhalb einer Produktion relativ klein sind.
Unter der Annahme, dass bei allen Druckprodukten 5 einer Serie D0-SR, DB und C des Schneidgutes 10 konstant sind, lassen sich in Abhängigkeit der laufend gemessenen Dicke SR(n) alle anderen Punkte, wie P0(n), P1(n), P2(n) und PL(n) berechnen.
Die Dicke DL eines losen Schneidgutes 10 errechnet sich beispielsweise nach der Formel:
Assuming that in all printed
The thickness D L of a loose material to be cut 10 is calculated, for example, according to the formula:
Die Koordination der Antriebe wird durch die Steuervorrichtung 30 vorgenommen, die über die Leitungen 37,45,52 mit den Antrieben oder Motoren verbunden ist. Die benötigten Messwerte und Signale erhält die Steuervorrichtung 30 über die Signalleitungen 32,33,36.
Aus den obigen Erläuterungen ist es offensichtlich, dass durch die Optimierung des Presshubes vor allem bei steifen und/oder dünnen Druckprodukten 5 eine wesentliche Reduktion der Pressgeschwindigkeit und vor allem der Beschleunigung erreichbar ist. Unabhängig von der Produktionsgeschwindigkeit kann die Schneidvorrichtung 17 immer mit der maximalen Geschwindigkeit arbeiten, die hierbei nicht durch die Schnittgeschwindigkeit, sondern durch die von der Mechanik bestimmten Grenzen limitiert wird. Wesentlich ist zudem, dass die bei tiefer Maschinengeschwindigkeit vergrösserte Zykluszeit Z insbesondere für die Operationen Transportieren, Ausrichten und Pressen zur Verfügung steht, da für den Schneidvorgang immer gleich viel Zeit benötigt wird.The coordination of the drives is made by the
From the above explanations, it is obvious that by optimizing the pressing stroke, especially in the case of stiff and / or thin printed
Claims (12)
- Method for cutting several sides of a printed product (5, 10) over several processing steps of a processing cycle, with a cutting device (1), which has a stacking device (4) for taking printed products (5, 10), a feed device (7) for conveying the printed products (10) from the stacking device (4) into a cutting device (17) made with a press die (19) for pressing the printed products (10) onto a cutting table (18) and with knives (23, 24) for cutting the printed products (10) on the cutting table (18), in which the press die (19) and the knives (23, 24) are driven separately and their drives are controlled by a control device (30) and in which the processing cycle comprises at least the following processing steps:- feeding the printed products (10) from the stacking device (4) to the cutting device (17),- pressing the printed products (10) onto the cutting table (18) of the cutting device (17),- cutting the printed products (10) on the cutting table (18) of the cutting device (17),- releasing the press die from the cutting table (18) of the cutting device (17)and removing the cut printed products (10) from the cutting table, characterised in that a processing cycle, which is variable over time, made up of the processing steps of feeding, pressing, cutting and releasing, has a knife movement, which is constant over time, and feeding, pressing and releasing steps, which are variable over time, when cutting the printed products, and that the thickness of a material to be cut (10) consisting of several printed products (5) is determined using constant measurement of the thickness of the material to be cut.
- Method according to claim 1, characterised in that the knife movements consist of a pre-stroke and a return stroke.
- Method according to claim 1 or 2, characterised in that the values determined based on the bulkiness and/or spring characteristics (C) of the printed products (5) or the material to be cut (10) determine the upper end position of the stroke of the press die (19).
- Method according to claim 3, characterised in that the thickness (D, d) of the material to be cut (10) is determined in the area of the feed device (2) by measuring.
- Method according to claim 3 or 4, characterised in that the start of the pressure stroke is controlled depending on the thickness of the material to be cut (10), which has been determined.
- Method according to one of claims 3 to 5, characterised in that the value required for a comparison of thickness is determined by a measuring device (11) on the material to be cut (10).
- Method according to one of claims 3 to 6, characterised in that the spring characteristics (C) of the material to be cut (10) is determined by at least two pressing forces and the thicknesses measured from this.
- Cutting device (1) for cutting several edges of a printed product (5, 10) in a processing cycle consisting of the processing steps of feeding, pressing and cutting the printed products (5, 10) as well as releasing the press die (19) from the printed products (10), which has a stacking device (4), a feed device (7), a press die (19) and a cutting device (17) consisting of several knives (23, 24) working together with this, in which the press die (19) and the knives (23, 24) of the cutting device (17) are driven separately and controlled by a control device (30), characterised by a measuring device (11) for constant determination of the thickness of a printed product (10) and a control device (30) connected to the measuring device (11) for time distribution between a cutting process, which is constant over time, and at least one of the rest of the processing steps of the processing cycle.
- Device according to claim 8, characterised in that the cutting device (17) is made with a front knife (23) and two side knives (24) connected to this in a driven way.
- Device according to claim 8 or 9, characterised in that the measuring device (11) is arranged in the area of the feed device (7).
- Device according to claim 10, characterised in that the feed device (7) has its own drive device connected to the control device (30).
- Cutting device according to one of claims 8 to 11, characterised in that the press die (19) is connected to a controlled servomotor (21) in a driven way.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20040405649 EP1647373B1 (en) | 2004-10-18 | 2004-10-18 | Method for cutting more sides of a printed product |
AT04405649T ATE513662T1 (en) | 2004-10-18 | 2004-10-18 | METHOD FOR TRIMING MULTIPLE EDGES OF A PRINTED PRODUCT |
JP2005271511A JP5695285B2 (en) | 2004-10-18 | 2005-09-20 | Method for cutting multiple edges of a printed product |
US11/252,253 US8336431B2 (en) | 2004-10-18 | 2005-10-18 | Method for trimming multiple edges of a print product |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20040405649 EP1647373B1 (en) | 2004-10-18 | 2004-10-18 | Method for cutting more sides of a printed product |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1647373A1 EP1647373A1 (en) | 2006-04-19 |
EP1647373B1 true EP1647373B1 (en) | 2011-06-22 |
Family
ID=34932324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040405649 Active EP1647373B1 (en) | 2004-10-18 | 2004-10-18 | Method for cutting more sides of a printed product |
Country Status (4)
Country | Link |
---|---|
US (1) | US8336431B2 (en) |
EP (1) | EP1647373B1 (en) |
JP (1) | JP5695285B2 (en) |
AT (1) | ATE513662T1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1782930B1 (en) * | 2005-11-02 | 2012-03-14 | Müller Martini Holding AG | Device for trimming printed products |
US20090238662A1 (en) * | 2008-03-18 | 2009-09-24 | Goss International Americas, Inc. | Servo driven apparatus for trimming and transporting printed products in a trimmer |
US8186252B2 (en) * | 2008-03-18 | 2012-05-29 | Goss International Americas, Inc. | Method and apparatus for trimming and transporting printed products in a trimmer |
JP5954821B2 (en) * | 2011-08-15 | 2016-07-20 | ミュラー・マルティニ・ホルディング・アクチエンゲゼルシヤフト | Method for speed control of cutting device |
CN102514033A (en) * | 2011-12-30 | 2012-06-27 | 卧龙电气集团股份有限公司 | Cutting bed with pressing parts |
TWI487609B (en) * | 2012-03-06 | 2015-06-11 | Chan Li Machinery Co Ltd | Crop screening device for fiber products and cutting and screening method |
DE102015004857A1 (en) * | 2015-04-15 | 2016-10-20 | Kolbus Gmbh & Co. Kg | Method and device for loading a three-knife cutting machine with material to be cut |
EP3085501B1 (en) | 2015-04-21 | 2017-12-20 | Müller Martini Holding AG | Apparatus for performing cutting operation of open formatedges of a printproduct |
EP3482892A3 (en) | 2017-11-08 | 2019-10-02 | Müller Martini Holding AG | Equipment for carrying out cutting operations for open format edges of a printed product |
EP3486079B1 (en) | 2017-11-16 | 2021-02-24 | EMMECI S.p.A. | Line for the production of covered cardboard boxes |
CN108437035A (en) * | 2018-02-28 | 2018-08-24 | 重庆普天印务有限公司 | Ripper send book apparatus |
CN109013978A (en) * | 2018-06-25 | 2018-12-18 | 芜湖汉科信息技术有限公司 | A kind of electronic component foot cut device |
CN110883834B (en) * | 2019-12-10 | 2022-01-11 | 绵阳一康制药有限公司 | Automatic marking knife type medicine cutting device |
CN112497324B (en) * | 2020-11-06 | 2022-05-13 | 徐州亮华环保科技有限公司 | Paper pressing assembly of paper cutter with measurable and controllable pressure and working method of paper pressing assembly |
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US3424044A (en) * | 1966-03-10 | 1969-01-28 | Miehle Goss Dexter Inc | Continuous three-knife trimmer |
US3528332A (en) * | 1968-02-01 | 1970-09-15 | Miehle Goss Dexter Inc | Continuous one-station three-knife book trimmer |
US3981212A (en) * | 1971-02-06 | 1976-09-21 | Mccain William B | Sheet trimming machine |
US3722336A (en) * | 1971-02-10 | 1973-03-27 | North American Rockwell | Feed, transport and delivery mechanism for book trimmers and the like |
DE3011090A1 (en) | 1980-03-22 | 1981-10-01 | Rahdener Maschinenfabrik August Kolbus Gmbh & Co Kg, 4993 Rahden | PRESS STAMP DRIVE FOR PAPER CUTTING MACHINES |
JPS58192792A (en) * | 1982-02-05 | 1983-11-10 | ハ−・ボ−レンベルク・カ−ゲ−・ゲ−エムベ−ハ−・ウント・コンパニ− | Three-way cutter |
DE3302946C2 (en) * | 1982-02-05 | 1986-12-04 | H. Wohlenberg KG GmbH & Co, 3000 Hannover | Three-knife cutting machine |
US4558615A (en) * | 1982-04-08 | 1985-12-17 | De La Rue Giori S.A. | Method for the manufacture of freshly printed security papers cut to format and automatic cutting machine for carrying out the method |
DD248766B1 (en) * | 1986-05-02 | 1989-06-28 | Polygraph Leipzig | CUTTING CHUTE FACILITY FOR THREE-PIPE CUTTING MACHINES |
US4809754A (en) * | 1988-04-07 | 1989-03-07 | Macmillan Bloedel Limited | Curve veneer clipper |
DE59106764D1 (en) * | 1990-04-26 | 1995-11-30 | Wohlenberg Vertriebs Und Servi | METHOD AND DEVICE FOR SETTING UP A THREE-CUTTER. |
DE4206329A1 (en) * | 1992-02-29 | 1993-09-02 | Perfecta Schneidemaschinenwerk Gmbh | Press used in guillotine for paper, cardboard, etc - has servomotor driving spindle through toothed belt with nut on spindle bearing on press head |
DE19516047C2 (en) * | 1995-05-04 | 1997-04-30 | Wohlenberg Vertriebs Und Servi | Triple cutter |
US5694821A (en) * | 1995-12-08 | 1997-12-09 | Simonds Industries, Inc. | Method for controlling work feed rate for cutting wood, metal and other materials |
US6484615B2 (en) * | 1997-08-15 | 2002-11-26 | Formax, Inc. | Slicing blade for concurrently slicing a plurality of product loaves disposed in a side-by-side relationship |
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JP2001252890A (en) * | 2000-03-08 | 2001-09-18 | Horizon International Inc | Three-way cutting machine |
DE10021449A1 (en) * | 2000-05-03 | 2001-11-08 | Heidelberger Druckmasch Ag | Cutting device |
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 |
ITPD20010075A1 (en) * | 2001-03-30 | 2002-09-30 | Eurotecnica Engineering Srl | TRIMMING MACHINE OF FILE WITH COMBINED MOTOR BLADES |
US7213493B2 (en) * | 2001-10-26 | 2007-05-08 | Goss International Americas, Inc. | Infeed apparatus for a sheet material article trimmer |
-
2004
- 2004-10-18 EP EP20040405649 patent/EP1647373B1/en active Active
- 2004-10-18 AT AT04405649T patent/ATE513662T1/en active
-
2005
- 2005-09-20 JP JP2005271511A patent/JP5695285B2/en not_active Expired - Fee Related
- 2005-10-18 US US11/252,253 patent/US8336431B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
ATE513662T1 (en) | 2011-07-15 |
EP1647373A1 (en) | 2006-04-19 |
US20060081100A1 (en) | 2006-04-20 |
US8336431B2 (en) | 2012-12-25 |
JP2006110715A (en) | 2006-04-27 |
JP5695285B2 (en) | 2015-04-01 |
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