EP2266764B1 - Method and device for separating continuously supplied paper piles - Google Patents
Method and device for separating continuously supplied paper piles Download PDFInfo
- Publication number
- EP2266764B1 EP2266764B1 EP20100010479 EP10010479A EP2266764B1 EP 2266764 B1 EP2266764 B1 EP 2266764B1 EP 20100010479 EP20100010479 EP 20100010479 EP 10010479 A EP10010479 A EP 10010479A EP 2266764 B1 EP2266764 B1 EP 2266764B1
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- EP
- European Patent Office
- Prior art keywords
- cutting
- knives
- cutting edges
- disk
- counter
- 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.)
- Not-in-force
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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
- B26D1/0006—Cutting members therefor
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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
- B26D1/12—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 cutting member moving about an axis
- B26D1/25—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 cutting member moving about an axis with a non-circular cutting member
- B26D1/26—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 cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut
- B26D1/28—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 cutting member moving about an axis with a non-circular cutting member moving about an axis substantially perpendicular to the line of cut and rotating continuously in one direction during cutting
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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
- B26D1/12—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 cutting member moving about an axis
- B26D1/14—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter
- B26D1/24—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 cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
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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
- B26D1/0006—Cutting members therefor
- B26D2001/0033—Cutting members therefor assembled from multiple blades
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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
- B26D1/0006—Cutting members therefor
- B26D2001/0046—Cutting members therefor rotating continuously about an axis perpendicular to the edge
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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
- B26D1/0006—Cutting members therefor
- B26D2001/006—Cutting members therefor the cutting blade having a special shape, e.g. a special outline, serrations
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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
- B26D1/0006—Cutting members therefor
- B26D2001/0066—Cutting members therefor having shearing means, e.g. shearing blades, abutting blades
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/202—With product handling means
- Y10T83/2092—Means to move, guide, or permit free fall or flight of product
- Y10T83/2096—Means to move product out of contact with tool
- Y10T83/2122—By ejector within a hollow cutter
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- 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
- Y10T83/465—Cutting motion of tool has component in direction of moving work
- Y10T83/4766—Orbital motion of cutting blade
- Y10T83/4795—Rotary tool
Definitions
- the invention is in the field of paper processing and relates to a method and an apparatus for cutting continuously conveyed paper layers, wherein the separation takes place approximately parallel to the conveying direction.
- the method and apparatus are particularly suitable for dicing multiple-sided or multiple-use multi-page printed products that comprise two or more than two identical or different pieces and that are conveyed in one stream, such that adjacent copies are in a printed product and are arranged aligned in the conveying direction for all printed products.
- An apparatus and a method having the features of the preamble of claims 1 and 7 is of CH 666651 A described.
- the DE 3319103 A discloses the features of the preamble of claim 5.
- the publication CH-666 651 describes a device for cutting continuously conveyed paper layers, in particular of a scale flow of printed products, with the aid of a rotating driven cutting disc, which has two each arranged in the plane of an end face of the disc, circular cutting edges. Each of the two cutting edges is arranged cooperating with a counter-blade rotating in the opposite direction, the counter-blades also each having a circular cutting edge.
- the paper layers are pressed against each other for the separation.
- the cutting disk has, for example, a hollow grinding running around its circumference or consists of two disk parts placed against each other, wherein the mutually facing sides of the two disk parts are ground obliquely on their circumference. Obviously, the paper layers in such a device are severed by two parallel cutting processes, such that a waste strip is formed between the two severed product parts.
- the cutting disc is also proposed to form the cutting disc as a cutting disc or saw blade with sawtooth grinding, so not as a cutting but as a cutting tool.
- the cutting disc is also proposed instead of the usual for sawing the teeth, this order on two of the disc parts mentioned above corresponding mirror image disc parts.
- a rotating cutting wheel For the cutting of continuously conveyed paper layers, a rotating cutting wheel is also disclosed. Said teeth have alternating saw teeth and peeling blades around their circumference, wherein the cutting edges of the peeling blades lie alternately in the plane of one and in the plane of the other end face of the cutting disk.
- the function of the saw teeth is to clear a dividing seam by machining.
- the function of the paring knife is to improve the originating from the clearing paper edges on both sides of the sawed joint in a peeling cut.
- the cutting disc is operated in the opposite direction to the promotion, such that the paring cut substantially in the direction of the paper layers and against the conveying direction, which is unnecessary for the peeling process (as of course for the sawing) the use of a counter knife.
- the invention thus has as its object to provide a further method and a further device, which are suitable for the separation of substantially continuously conveyed paper layers, wherein the paper edges resulting from the separation should meet high quality requirements. Furthermore, the inventive method is to enable a device that is very space-saving.
- a pure cutting process is used for the separation of continuously conveyed paper layers, ie no cutting steps.
- Said cutting process is a shear cutting, that is cutting between intersecting cutting edges of a cutting blade and one with the cutting blade cooperating counter knife, wherein the two cutting edges are substantially rectilinear and the cutting edge of the cutting blade is advantageously arranged on a rotating cutting disc and the paper layers abut the cutting edge of the counter knife.
- the cutting process is carried out in successive cutting steps alternately on one side and on the other side of a parting line, such that a narrow strip of waste is cut out of the paper layers.
- the cutting steps are performed synchronously on both sides of the parting line.
- the paper layers are pressed against each other during the dicing of the resulting parting line so that they, where the cutting edges act, fit snugly against the cutting edge of the counter knife.
- the counter blades are preferably stationary during the separation and, more preferably, for extending their life parallel to the conveying direction displaceable.
- a plurality of cutting blades are each arranged on the cutting disk.
- the paper layers to be separated are, for example, quasi endless paper webs or there are successively conveyed stacks of paper layers, for example multi-page printed products, in particular, as already mentioned above, two or more uses. If such printed products are relatively thin (for example, only two- or four-sided), the method according to the invention also provides for partially overlapping printed products, ie for a scale flow of the printed products, a separation with paper edges which can meet the highest quality requirements.
- a plurality of cutting blades are used, which are arranged alternately around the circumference of a cutting disc are, and two counter-knife with rectilinear, parallel to the conveying direction aligned cutting edges.
- the axis of rotation of the cutting wheel is arranged on one side of the paper layers to be separated perpendicular to the conveying direction, such that the cutting edges of the cutting blade can be moved through the paper layers.
- the cutting edges of the counter blades are arranged on the other side of the paper layers and aligned on the two end faces of the cutting wheel.
- the rotating cutting disc is operated concurrently with the promotion of the paper layers.
- the alternating cutting blades have substantially rectilinear cutting edges which lie alternately in the plane of one and the other end faces of the cutting disc and which have two ends, one of which is formed as a sharp cutting tip.
- the cutting wheel, the means for conveying the paper layers and the counter blades are arranged relative to each other, that at the beginning of each cutting step, the cutting tip of the cutting blade first meets the paper layers and the cutting edge of the cutting blade forms a cutting angle with the cutting edge of the counter knife, at least as long the two cutting edges intersect, advantageously greater than 15 ° and less than 60 °.
- the two cooperating cutting edges are therefore never parallel to each other during the entire cutting step (only crossing cut, never full-edged cut). Depending on whether the cutting tip is leading or trailing relative to the cutting edge, the cut takes place in a cutting direction which runs counter to the conveying direction or is rectified therewith.
- the conveying speed and the rotational speed of the cutting disc are to be adapted to the configuration of the cutting blade, that the continuous cutting produced by the alternating cutting steps on each side of the parting line, so that the paper layers are promoted from cutting step to cutting step on each side of the parting line by a distance which is not larger than the length of the cut producible in a cutting step.
- the rotational speed of the blade for each conveying speed is a lower one Limit set.
- the blade is rotated much faster than at said minimum speed.
- the method according to the invention and the device according to the invention can be used to advantage for the separation of printed products, which are designed as two- or multiple-use and which are conveyed successively or overlapping one another.
- FIG. 1 illustrates a single cutting step of a first exemplary embodiment of the method.
- the paper layers 1 to be severed are shown stationary, while the axis of rotation M of the cutting disk 2 moves in a direction F '.
- This corresponds to a promotion of the paper layers 1 in the direction F at stationary rotation axis M (synchronization of promotion F and disc rotation R).
- the cutting disc 2 Of the cutting disc 2, only the cutting edge 3 of a single cutting blade 4 is shown.
- the cutting edge 5 of the stationary counter knife 6 extends in the support plane of the paper layers 1 and perpendicular to the axis of rotation M of the cutting wheel 2.
- the distance between the axis of rotation M of the cutting disk 2 and the surface of the paper layers 1, or the cutting edge 5 of the counter knife 6 is such that the cutting edge 3 of the cutting blade 2 arranged on the cutting blade 4, the paper layers 1 can completely penetrate. That is, a vertex of the cutting wheel 2 lying beyond the cutting edge 5 of the counter knife 6 has a distance from the cutting edge 5 which is greater than the radial distance between the two ends of the cutting edge 3.
- the cutting disc 2 and the counter blade 6 are relative to each other and the cutting blade 4 is arranged on the cutting disc 2 such that the cutting edges 3 in the direction of rotation R trailing and radially outer end of the cutting edge 3, the first striking the paper layers 1 cutting tip 7, wherein this cutting tip 7 is immersed in the paper layers 1 in a still uncut position and the cutting direction (direction of movement of the crossing point K of the cutting edges of the cutting blade and counter knife) is rectified with the conveying direction F.
- the cutting edge 3 of the cutting blade 4 is shown in three successive phases, indicated by indices .1, .2 and .3.
- the cutting step begins, that is, the cutting tip 7.1 hits the paper layers 1.
- the cutting step is completed, that is, the entire cutting edge 3.3 is on the side of the counter blade 6 outside the paper layers 1.
- the second phase (Index .2) is approximately midway between the first and the third phase, wherein the cutting edge of the cutting blade 3.2 crosses the cutting edge 5 of the counter knife 6.
- the cutting angle (alpha.1) is advantageously already greater than 15 ° and is not greater than, for example, 60 ° during the cutting step.
- the rotational speed R must be so high in comparison to the conveying speed F that the second edge 8 forms the cutting tip 7 together with the cutting edge 3 at an angle of advantageously approximately 90 ° and not as Cutting edge is formed, at no time during the cutting step has a position relative to the paper layers 1, which is located further upstream than the position of the first impact of the cutting tip. 7
- FIG. 2 shows the device with viewing angle parallel to the cutting disc axis, FIG. 3 cut transversely to the conveying direction F.
- the mentioned, most important components are the cutting disc 2, on whose circumference the alternating cutting blades 4 and 4 'are arranged with cutting edges 3 and 3', two counter blades 6 and 6 'with cutting edges 5 and 5' and pressing means 10/11 and 10 '/ 11 '.
- the cutting edges 3 of the cutting blades 4 are in the plane of FIG FIG. 3 arranged on the left end face of the blade 2 and cooperate with the cutting edge 5 of counter blade 6.
- the cutting edges 3 ' are arranged in the plane of the right end of the blade 2 and cooperate with the cutting edge 5' of the counter blade 6 '.
- the counter knives 6 and 6 ' are advantageously arranged guided in a rail, such that they can be easily moved parallel to the conveying direction. With such a displacement, it becomes possible to have a location of the cutting edge locally worn by the cutting steps through a not yet used or replace a less worn point, which extends the life of the counter knife relevant.
- the pressing means 10/11 and 10 '/ 11' the only in FIG. 3 are represented, the paper layers 1 press during the separation on both sides of the resulting parting line on each other and against the counter knives 6 and 6 ', such that the paper layers during the cutting steps fed to the cutting edges 5 and 5' are applied.
- the pressing means can also serve as conveying means with the aid of which the paper layers are conveyed through the separating point, or they can support further conveying means (not shown) in this conveying function.
- the pressing means are designed, for example, as pairs of counter-rotating around at least two rollers (not shown) rotating press belts 10 and 11, and 10 'and 11', wherein the press belt 10 or 10 'the separating wheel side and the press belt 11 or 11' on the counter-blade side is arranged and wherein the speed of the press belts corresponds to the conveying speed.
- the press belts of the pairs 10/11 and 10 '/ 11' or the rollers over which they run, are pressed against each other with suitable resilient means.
- at least one of the rollers is designed as actively driven drive rollers.
- FIGS. 4 and 5 show an exemplary embodiment of the cutting wheel 2 for the method according to FIG 1.
- This has a diameter of only 200 mm, for example 24 cutting blade 4 and alternately 24 cutting blade 4 ', the cutting edges 3 or 3' each between 5 and 15 mm, for example about 10 mm long.
- the angle beta between the cutting edge 7 forming edges of the cutting blade is about 90 ° (between 85 ° and 95 °), the angle gamma between the tangent to the cutting tip 7 and the cutting edge 3 about 45 °.
- the direction of rotation R of the cutting disc 2 is such that the radially outer ends of the cutting edges run after the cutting edges.
- the position of the cutting edge 5 of the counter blade 6 is such that the radially outer ends of the cutting edges 3 meet first on the paper layers and therefore represent the cutting tips 7.
- the cutting disc 2 is for example in one piece, that is made of a solid disc, as in FIG. 5 is shown. But it can also be made of two mirror-image disk parts, wherein the disk parts are arranged relative to each other, that the cutting blades of one disk part are aligned with the gaps between the cutting blades of the other disk part (see below Fig. 10 +11). Two such part discs can be distanced from each other to produce wider joints by corresponding washers in a predetermined amount.
- FIG. 5 is also clearly visible how the cutting edges 3 and 3 'of the cutting blades 4 and 4' are arranged alternately in the plane of one and the other end face of the cutting disc 2.
- the cutting edges of the cutting blade can be easily reground, but the cutting blades can also be designed self-sharpening
- FIGS. 6 to 8 show in the same representations as the figures 1, 4 and 5 a second exemplary embodiment of method and apparatus. Like elements are designated by like reference numerals.
- the main difference of this second embodiment from the first embodiment described in connection with the preceding figures is that the cutting tips 7, although in turn are the radially outer ends of the cutting edges 3, but precede the cutting edges. That is, the cutting tips 7 strike the paper layers in the end portion of the section of the preceding cutting step, and the cutting point K moves counter to the conveying direction F (cutting direction opposite to the conveying direction).
- the cutting angle alpha is smaller during the cutting step, but also moves here advantageously in a range below 60 ° and remains greater than 15 °.
- FIG. 9 very schematically shows a cutting step of a third, exemplary embodiment of the method.
- the radially inner end (cutting tip 7) of the cutting edge 3 of the cutting blade 4 first strikes the paper layers 1 and is arranged in advance of the cutting edge 3. It results in a same cutting process as in FIG. 6 illustrated, ie with a cutting direction which is opposite to the conveying direction and with a decreasing during the cutting step cutting angle. From a comparison of Figures 9 and 6 shows that it is also possible to arrange the two ends of the cut edges 3 at the same radial distance from the blade axis, such that the cut edges 3 are perpendicular to a central radius.
- the method can be used not only for separating paper layers but also for trimming such paper layers. Since, as mentioned above for such a trimming only on one side of the dividing line, a high edge quality is desired, a cutting disc can be used, at which the cutting edges of all cutting blades in the plane of the same disc face are (see below Fig. 13 ).
- Fig. 10-12 show two examples of a cutting disc 2, which is made of two mirror-image disc parts 12, 12 ', which with an angular offset ( Fig. 10 +11) or congruent ( Fig. 12 ) are mounted on each other.
- Fig. 11 Like the sectional view in Fig. 11 shows, the axially outwardly facing surfaces of the disc parts 12, 12 'substantially flat.
- the respective inwardly facing surfaces are structured to form the cutting blades 4, 4 '.
- the angular offset is in the case of Fig. 10 such that in each case a notch 13, 13 'strikes a cutting blade 4, 4' of the counter-pane.
- Fig. 13 shows an example for producing a side section of the paper layers 1 with only one disc part 12, the according to 10 or 12 is trained. The paper layers are pressed when cutting from above and below.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Cutting Devices (AREA)
- Nonmetal Cutting Devices (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
Description
Die Erfindung liegt auf dem Gebiete der Papierverarbeitung und betrifft ein Verfahren und eine Vorrichtung zum Zertrennen von kontinuierlich geförderten Papierlagen, wobei die Zertrennung in etwa parallel zur Förderrichtung erfolgt. Das Verfahren und die Vorrichtung sind insbesondere geeignet zum Zertrennen von als Zweifachnutzen oder Mehrfachnutzen ausgebildeten, mehrseitigen Druckprodukten, die zwei oder mehr als zwei gleiche oder voneinander verschiedene Exemplare umfassen und die in einem Strom gefördert werden, derart, dass in einem Druckprodukt miteinander verbundenen Exemplare nebeneinander und für alle Druckprodukte in Förderrichtung aufeinander ausgerichtet angeordnet sind. Es sind aber selbstverständlich auch andere Anwendungen von der Vorrichtung gemäss Erfindung denkbar. Ein Vorrichtung sowie ein Verfahren mit den Merkmalen des Oberbegriffs der Ansprüche 1 und 7 wird vom
Im Unterschied zum Prozess des Beschneidens von Druckprodukten, in dem von Druckprodukten unerwünschte Randbereiche in einem Kopf-, Fuss- und/oder Frontschnitt abgeschnitten werden und deshalb die Qualität der Papierkanten nur auf der Seite des Druckproduktes nicht aber auf der Seite des weggeschnittenen Abschnitts wichtig ist, ist es beim Zertrennen von Mehrfachnutzen wichtig, dass beide durch die Zertrennung entstehenden Kanten eine möglichst gute Qualität haben.In contrast to the process of cropping printed products, in which printed areas unwanted edge areas in a top, bottom and / or front section are cut and therefore the quality of the paper edges is important only on the side of the printed product but not on the side of the cut-away section , it is important when dividing multiple benefits that both by the separation resulting edges have the best possible quality.
Es hat sich gezeigt, dass eine beidseitig gleich gute Kantenqualität beim Zertrennen von kontinuierlich geförderten Papierlagen besser erreichbar ist, wenn die Zertrennung nicht durch einen einzigen Schnitt bewirkt wird sondern durch Erstellung einer Trennfuge entweder durch Sägen oder Fräsen und Entfernung eines spanartigen Abfalls oder durch paralleles Schneiden entlang von zwei möglichst nahe nebeneinander verlaufenden, parallelen Schnittlinien, wobei zwischen den beiden zertrennten Teilen ein schmaler Abfallstreifen entsteht.It has been shown that equal edge quality on both sides is better achieved when cutting continuously fed paper layers, if the separation is not effected by a single cut but by creating a parting line either by sawing or milling and removal of a chip-like waste or by parallel cutting along two parallel cutting lines that are as close as possible to each other, creating a narrow strip of waste between the two parts.
Die Publikation
In derselben Publikation wird auch vorgeschlagen, die Trennscheibe als Frässcheibe oder Sägescheibe mit Sägezahnschliff auszubilden, also nicht als schneidendes sondern als spanabhebendes Werkzeug. Für den Fall des Sägezahnschliffs wird vorgeschlagen, anstelle der für Sägen üblichen Schränkung der Zähne, diese an zwei den weiter oben genannten Scheibenteilen entsprechenden spiegelbildgleichen Scheibenteilen anzuordnen.In the same publication, it is also proposed to form the cutting disc as a cutting disc or saw blade with sawtooth grinding, so not as a cutting but as a cutting tool. In the case of the Sägezahnschliffs is proposed instead of the usual for sawing the teeth, this order on two of the disc parts mentioned above corresponding mirror image disc parts.
In der Publikation
Es zeigt sich, dass bezüglich Kantenqualität beim Zertrennen von kontinuierlich geförderten Papierlagen noch Handlungsbedarf besteht. Die Erfindung stellt sich also die Aufgabe, ein weiteres Verfahren und eine weitere Vorrichtung zu schaffen, die sich für die Zertrennung von im wesentlichen kontinuierlich geförderten Papierlagen eignen, wobei die bei der Zertrennung entstehenden Papierkanten hohen Qualitätsansprüchen genügen sollen. Ferner soll das erfindungsgemässe Verfahren eine Vorrichtung ermöglichen, die sehr raumsparend ist.It turns out that with regard to edge quality when cutting continuously fed paper layers there is still need for action. The invention thus has as its object to provide a further method and a further device, which are suitable for the separation of substantially continuously conveyed paper layers, wherein the paper edges resulting from the separation should meet high quality requirements. Furthermore, the inventive method is to enable a device that is very space-saving.
Diese Aufgabe wird gelöst durch das Verfahren und die Vorrichtung, wie sie in den Patenansprüchen definiert sind.This object is achieved by the method and the device as defined in the patent claims.
Gemäss Erfindung wird für die Zertrennung von kontinuierlich geförderten Papierlagen ein reiner Schneidprozess eingesetzt, also keine spanabhebenden Schritte. Der genannte Schneidprozess ist ein Scherschneiden, das heisst ein Schneiden zwischen sich kreuzenden Schneidkanten eines Schneidmessers und eines mit dem Schneidmesser kooperierenden Gegenmessers, wobei die beiden Schneidkanten im wesentlichen geradlinig sind und die Schneidkante des Schneidmessers vorteilhafterweise an einer rotierenden Trennscheibe angeordnet ist und die Papierlagen an der Schneidkante des Gegenmessers anliegen. Der Schneidprozess wird in unmittelbar aufeinanderfolgenden Schneidschritten alternierend auf der einen und auf der anderen Seite einer Trennfuge durchgeführt, derart, dass aus den Papierlagen ein schmaler Abfallstreifen ausgeschnitten wird. Alternativ werden die Schneidschritte beidseits der Trennfuge synchron ausgeführt. Die Papierlagen werden während dem Zertrennen beidseitig von der entstehenden Trennfuge aufeinandergepresst, so dass sie, da wo die Schneidkanten wirken, satt an der Schnittkante des Gegenmessers anliegen. Die Gegenmesser sind vorzugsweise während der Zertrennung stationär und besonders bevorzugt zur Verlängerung ihrer Lebensdauer parallel zur Förderrichtung verschiebbar.According to the invention, a pure cutting process is used for the separation of continuously conveyed paper layers, ie no cutting steps. Said cutting process is a shear cutting, that is cutting between intersecting cutting edges of a cutting blade and one with the cutting blade cooperating counter knife, wherein the two cutting edges are substantially rectilinear and the cutting edge of the cutting blade is advantageously arranged on a rotating cutting disc and the paper layers abut the cutting edge of the counter knife. The cutting process is carried out in successive cutting steps alternately on one side and on the other side of a parting line, such that a narrow strip of waste is cut out of the paper layers. Alternatively, the cutting steps are performed synchronously on both sides of the parting line. The paper layers are pressed against each other during the dicing of the resulting parting line so that they, where the cutting edges act, fit snugly against the cutting edge of the counter knife. The counter blades are preferably stationary during the separation and, more preferably, for extending their life parallel to the conveying direction displaceable.
Für die alternierenden oder synchronen Schneidschritte sind je eine Mehrzahl von Schneidmessern an der Trennscheibe angeordnet.For the alternating or synchronous cutting steps, a plurality of cutting blades are each arranged on the cutting disk.
Die zu zertrennenden Papierlagen sind beispielsweise quasi endlose Papierbahnen oder es sind hintereinander geförderte Stapel von Papierlagen, beispielsweise mehrseitige Druckprodukte, insbesondere, wie oben bereits erwähnt, Zwei- oder Mehrfachnutzen. Wenn solche Druckprodukte relativ dünn sind (beispielsweise nur zwei- oder vierseitig) ergibt das erfindungsgemässe Verfahren auch für einander teilweise überlappende Druckprodukte, also für einen Schuppenstrom der Druckprodukte, eine Trennung mit Papierkanten, die den höchsten Qualitätsanforderungen genügen können.The paper layers to be separated are, for example, quasi endless paper webs or there are successively conveyed stacks of paper layers, for example multi-page printed products, in particular, as already mentioned above, two or more uses. If such printed products are relatively thin (for example, only two- or four-sided), the method according to the invention also provides for partially overlapping printed products, ie for a scale flow of the printed products, a separation with paper edges which can meet the highest quality requirements.
Zur Durchführung der alternierenden Schneidschritte werden also eine Mehrzahl von Schneidmessern eingesetzt, die alternierend um den Umfang einer Trennscheibe angeordnet sind, und zwei Gegenmesser mit geradlinigen, parallel zur Förderrichtung ausgerichteten Schneidkanten. Die Rotationsachse der Trennscheibe ist auf der einen Seite der zu zertrennenden Papierlagen senkrecht zur Förderrichtung angeordnet, derart, dass die Schneidkanten der Schneidmesser durch die Papierlagen hindurch bewegt werden können. Die Schneidkanten der Gegenmesser sind auf der anderen Seite der Papierlagen angeordnet und auf die beiden Stirnseiten der Trennscheibe ausgerichtet. Die rotierende Trennscheibe wird mit der Förderung der Papierlagen gleichlaufend betrieben. Die alternierenden Schneidmesser haben im wesentlichen geradlinige Schneidkanten, die alternierend in der Ebene der einen und der anderen Stirnseite der Trennscheibe liegen und die zwei Enden aufweisen, von denen das eine als scharfe Schneidspitze ausgebildet ist. Die Trennscheibe, das Mittel zur Förderung der Papierlagen und die Gegenmesser sind derart relativ zueinander angeordnet, dass zu Beginn jedes Schneidschritts die Schneidspitze des Schneidmessers zuerst auf die Papierlagen trifft und die Schneidkante des Schneidmessers mit der Schneidkante des Gegenmessers einen Schneidwinkel bildet, der, mindestens solange die beiden Schneidkanten sich kreuzen, vorteilhafterweise grösser ist als 15° und kleiner als 60°. Die beiden kooperierenden Schneidkanten sind also während des ganzen Schneidschritts nie parallel zueinander (nur kreuzender Schnitt, nie vollkantiger Schnitt). Je nachdem, ob die Schneidspitze relativ zur Schneidkante vor- oder nachlaufend ist, erfolgt der Schnitt in einer Schnittrichtung, die der Förderrichtung entgegenläuft oder mit dieser gleichgerichtet ist.To carry out the alternating cutting steps, therefore, a plurality of cutting blades are used, which are arranged alternately around the circumference of a cutting disc are, and two counter-knife with rectilinear, parallel to the conveying direction aligned cutting edges. The axis of rotation of the cutting wheel is arranged on one side of the paper layers to be separated perpendicular to the conveying direction, such that the cutting edges of the cutting blade can be moved through the paper layers. The cutting edges of the counter blades are arranged on the other side of the paper layers and aligned on the two end faces of the cutting wheel. The rotating cutting disc is operated concurrently with the promotion of the paper layers. The alternating cutting blades have substantially rectilinear cutting edges which lie alternately in the plane of one and the other end faces of the cutting disc and which have two ends, one of which is formed as a sharp cutting tip. The cutting wheel, the means for conveying the paper layers and the counter blades are arranged relative to each other, that at the beginning of each cutting step, the cutting tip of the cutting blade first meets the paper layers and the cutting edge of the cutting blade forms a cutting angle with the cutting edge of the counter knife, at least as long the two cutting edges intersect, advantageously greater than 15 ° and less than 60 °. The two cooperating cutting edges are therefore never parallel to each other during the entire cutting step (only crossing cut, never full-edged cut). Depending on whether the cutting tip is leading or trailing relative to the cutting edge, the cut takes place in a cutting direction which runs counter to the conveying direction or is rectified therewith.
Die Fördergeschwindigkeit und die Rotationsgeschwindigkeit der Trennscheibe sind derart an die Ausgestaltung der Schneidmesser anzupassen, dass durch die alternierenden Schneidschritte auf jeder Seite der Trennfuge je ein kontinuierlicher Schnitt entsteht, dass also die Papierlagen von Schneidschritt zu Schneidschritt auf jeder Seite der Trennfuge um eine Strecke gefördert werden, die nicht grösser ist als die Länge des in einem Schneidschritt erzeugbaren Schnitts. Durch diese Bedingung ist der Rotationsgeschwindigkeit der Trennscheibe für jede Fördergeschwindigkeit eine untere Grenze gesetzt. Vorteilhafterweise wird die Trennscheibe aber bedeutend schneller rotiert als mit der genannten minimalen Geschwindigkeit.The conveying speed and the rotational speed of the cutting disc are to be adapted to the configuration of the cutting blade, that the continuous cutting produced by the alternating cutting steps on each side of the parting line, so that the paper layers are promoted from cutting step to cutting step on each side of the parting line by a distance which is not larger than the length of the cut producible in a cutting step. By this condition, the rotational speed of the blade for each conveying speed is a lower one Limit set. Advantageously, however, the blade is rotated much faster than at said minimum speed.
Experimente zeigen, dass das erfindungsgemässe Verfahren zum Zertrennen von kontinuierlich geförderten Papierlagen Papierkanten von guter Qualität liefern, wenn die Trennfuge bzw. die Trennscheibe zwischen 3 und 6 mm breit ist, insbesondere zwischen 4 und 5 mm. Experimente zeigen ferner, dass eine bessere Kantenqualität erreicht werden kann, je grösser der Durchmesser der Trennscheibe ist. Es zeigt sich aber auch, dass bereits mit Trennscheiben eines Durchmessers im Bereich von ca. 160 bis 250 mm gute und insbesondere genügende Resultate erzielt werden, also mit Trennscheiben, die bedeutend kleiner sind als bekannte Trennscheiben, die demselben Zwecke dienen. Derart kleine Trennscheiben erlauben eine platzsparende Ausgestaltung der Vorrichtung zur Durchführung des erfindungsgemässen Verfahrens.Experiments show that the inventive method for cutting continuously conveyed paper layers provide good quality paper edges when the parting line or the separating disk is between 3 and 6 mm wide, in particular between 4 and 5 mm. Experiments also show that a better edge quality can be achieved, the larger the diameter of the cutting wheel. However, it also turns out that good and in particular sufficient results are achieved even with cutting discs of a diameter in the range of about 160 to 250 mm, ie with cutting discs, which are significantly smaller than known cutting discs, which serve the same purpose. Such small cutting discs allow a space-saving design of the device for carrying out the inventive method.
Das erfindungsgemässe Verfahren und die erfindungsgemässe Vorrichtung ist mit Vorteil zur Zertrennung von Druckprodukten einsetzbar, die als Zwei- oder Mehrfachnutzen ausgebildet sind und die nacheinander oder einander überlappend gefördert werden.The method according to the invention and the device according to the invention can be used to advantage for the separation of printed products, which are designed as two- or multiple-use and which are conveyed successively or overlapping one another.
Im nachfolgenden Beschreibungsteil werden nochmals charakteristische Merkmale sowohl des Verfahrens als auch der Vorrichtung und der Trennscheibe wiedergegeben, wie sie in der Stammanmeldung zur vorliegenden Teilanmeldung beansprucht wurden. Diese Merkmale sollen auch Teil der Offenbarung dieser Teilanmeldung sein:
- 1A. Ein Verfahren zum Zertrennen von im Wesentlichen kontinuierlich in einer
Förderrichtung geförderten Papierlagen in einer parallel zur Förderrichtung (F) ausgerichteten Zertrennrichtung, wobei durch zwei parallele Schnitte zwischen je zwei Schneidkanten ein Abfallstreifen entsteht. Das Verfahren zeichnet sich dadurch aus, dass die zwei parallelen Schnitte in alternierenden, ohne Zwischenschritte aufeinander folgenden oder in synchronen Schneidschritten erstellt werden, wobei in den alternierenden oder synchronen Schneidschritten je ein erstes oder ein zweites Paar von im wesentlichen geradlinigen Schneidkanten von Schneidmesser und Gegenmesser in einem scherenden Schnitt kooperieren, während die Papierlagen an den Schneidkanten der Gegenmesser anliegen. - 1B. Das in Punkt 1A genannte Verfahren, das sich im Weiteren dadurch auszeichnen kann, dass für die aufeinander folgenden, alternierenden oder synchronen Schneidschritte an einer mit der Förderrichtung im Gleichlauf rotierenden Trennscheibe angeordnete Schneidmesser verwendet werden, wobei für das erste Paar von Schneidkanten die Schneidkante des Schneidmessers in der Ebene einer ersten Stirnseite der Trennscheibe liegt und die Schneidkante des Gegenmessers auf die erste Stirnseite der Trennscheibe ausgerichtet ist und wobei für das zweite Paar von Schneidkanten die Schneidkante des Schneidmessers in der Ebene einer zweiten Stirnseite der Trennscheibe liegt und die Schneidkante des Gegenmessers auf die zweite Stirnseite der Trennscheibe ausgerichtet ist.
- 1C. Das in Punkt 1A bzw. 1B genannte Verfahren, das sich im Weiteren dadurch auszeichnen kann, dass die Papierlagen während der Zertrennung gegeneinander gepresst werden, derart, dass sie satt an den Gegenmessern anliegen.
- 1D. Das in Punkt 1B bzw. 1C genannte Verfahren, das sich im Weiteren dadurch auszeichnen kann, dass die Ausrichtung der Schneidkanten der Schneidmesser und die Schneidkanten der Gegenmesser derart aufeinander abgestimmt sind, dass ein als Schneidspitze ausgerüstetes Ende der Schneidkanten der Schneidmesser zuerst auf die Papierlagen trifft.
- 1E. Das in Punkt 1D genannte Verfahren, das sich im Weiteren dadurch auszeichnen kann, dass die Schneidspitze der Schneidkante vorläuft und dass die Papierlagen in jedem Schneidschritt in einer der Förderrichtung (F) entgegenlaufenden Schneidrichtung geschnitten werden.
- 1 F. Das in Punkt 1D genannte Verfahren, das sich im Weiteren dadurch auszeichnen kann, dass die Schneidspitze der Schneidkante nachläuft und dass die Papierlagen in jedem Schneidschritt in einer mit der Förderrichtung (F) gleichgerichteten Schneidrichtung geschnitten werden.
- 1G. Das in Punkt 1A genannte Verfahren, das sich im Weiteren dadurch auszeichnen kann, dass ein Schneidwinkel (alpha) zwischen der Schneidkante des Schneidmessers und der Schneidkante des Gegenmessers, solange die beiden Schneidkanten gekreuzt sind, grösser als 15° und kleiner als 60° ist.
- 2A. Eine Vorrichtung zum Zertrennen von im wesentlichen kontinuierlich in einer Förderrichtung (F) geförderten Papierlagen in einer im wesentlichen parallel zur Förderrichtung (F) ausgerichteten Zertrennrichtung, wobei durch zwei parallele Schnitte zwischen je einer Schneidkante eines Schneidmessers und einer Schneidkante eines Gegenmessers ein Abfallstreifen entsteht, welche Vorrichtung für die Erstellung der zwei parallelen Schnitte ein Schneidmesser und ein Gegenmesser mit je einer Schneidkante aufweist. Die Vorrichtung zeichnet sich dadurch aus, dass zur Erstellung der zwei parallelen Schnitte in alternierenden, ohne Zwischenschritte aufeinander folgenden oder synchronen Schneidschritten ein erstes und ein zweites Paar von in einem scherenden Schnitt kooperierend angeordneten, im wesentlichen geradlinigen Schneidkanten von Schneidmesser und Gegenmesser vorgesehen sind, und dass die Vorrichtung ferner Mittel aufweist, mit deren Hilfe die Papierlagen an den Schneidkanten der Gegenmesser anliegend förderbar sind.
- 2B. Die in Punkt 2A genannte Vorrichtung, die sich im Weiteren dadurch auszeichnen kann, dass die Schneidmesser um den Umfang einer im Gleichlauf mit der Förderrichtung (F) rotierenden Trennscheibe angeordnet sind, wobei für das erste Paar von Schneidkanten die Schneidkante des Schneidmessers in der Ebene einer ersten Stirnseite der Trennscheibe liegt und die Schneidkante des Gegenmessers auf die erste Stirnseite der Trennscheibe ausgerichtet ist und wobei für das zweite Paar von Schneidkanten die Schneidkante des Schneidmessers in der Ebene einer zweiten Stirnseite der Trennscheibe angeordnet ist und die Schneidkante des Gegenmessers auf die zweite Stirnseite der Trennscheibe ausgerichtet ist.
- 2C. Die in Punkt 2A bzw. 2B genannte Vorrichtung, die sich im Weiteren dadurch auszeichnen kann, dass die Vorrichtung Mittel zum Zusammenpressen der Papierlagen und zum satten Anlegen der Papierlagen an die Gegenmesser aufweist, die vorzugsweise als aktive Fördermittel oder Hilfsfördermittel ausgestaltet sind.
- 2D. Die in Punkt 2A genannte Vorrichtung, die sich im Weiteren dadurch auszeichnen kann, dass die Trennscheibe je eine Mehrzahl von Schneidmessern mit Schneidkanten für das erste und das zweite Paar von Schneidkanten aufweist, die alternierend um den Umfang der Trennscheibe angeordnet sind.
- 2E. Die in Punkt 2D genannte Vorrichtung, die sich im Weiteren dadurch auszeichnen kann, dass die Schneidkanten der Schneidmesser und die Schneidkanten der Gegenmesser derart angeordnet sind, dass als Schneidspitzen ausgerüstete Enden der Schneidkanten der Schneidmesser vor den Schneidkanten (3, 3') auf die Papierlagen treffen und dass diese Schneidspitzen den Schneidkanten vorlaufen oder nachlaufen.
- 2F. Die in Punkt 2A genannte Vorrichtung, die sich im Weiteren dadurch auszeichnen kann, dass die Trennscheibe je eine Mehrzahl von Schneidmessern mit Schneidkanten für das erste und das zweite Paar von Schneidkanten aufweist, die entlang dem Umfang der Trennscheibe jeweils paarweise nebeneinander angeordnet und in Umfangsrichtung durch Einkerbungen voneinander getrennt sind.
- 3A. Eine Trennscheibe, die sich für ein Verfahren gemäss Punkt 1A oder für eine Vorrichtung gemäss Punkt 2A eignet und die sich dadurch auszeichnet, dass um den Umfang alternierend Schneidmesser angeordnet sind, die im wesentlichen geradlinige, in der Ebene der einen oder der anderen Stirnseite der Trennscheibe liegende Schneidkanten aufweisen, wobei jede der Schneidkanten ein als Schneidspitze ausgebildetes Ende aufweist, das vorzugsweise radial aussen liegend oder radial innen liegend ist.
- 3B. Die in Punkt 3A genannte Trennscheibe, die sich im Weiteren dadurch auszeichnen kann, dass sie einstückig oder aus zwei miteinander gekoppelten, im Wesentlichen spiegelsymmetrischen Scheibenteilen aufgebaut ist.
- 1A. A method of dicing essentially continuously in one
Conveying direction of conveyed paper layers in a direction parallel to the conveying direction (F) aligned severing direction, whereby by two parallel cuts between each two cutting edges a waste strip is formed. The method is characterized in that the two parallel cuts in alternating, without intermediate steps successive or in synchronous cutting steps are created, wherein in the alternating or synchronous cutting steps depending on a first or a second pair of substantially rectilinear cutting edges of the cutting blade and counter knife in cooperate with a shearing cut, while the paper layers abut the cutting edges of the counter knife. - 1B. The method mentioned in point 1A, which may further be characterized in that are used for the successive, alternating or synchronous cutting steps on a rotating with the conveying direction in synchronous cutting blade cutting blade, wherein for the first pair of cutting edges, the cutting edge of the cutting blade is in the plane of a first end face of the cutting disc and the cutting edge of the counter blade is aligned with the first end face of the blade and wherein for the second pair of cutting edges, the cutting edge of the cutting blade in the plane of a second end face of the blade is and the cutting edge of the counter blade on the second end face of the blade is aligned.
- 1C. The method mentioned in point 1A or 1B, which may further be characterized in that the paper layers are pressed against each other during the separation, such that they fit snugly against the counter knives.
- 1D. The method mentioned in point 1B or 1C, which may further be characterized in that the alignment of the cutting edges of the cutting blades and the cutting edges of the counter-blades are coordinated so that an end equipped as a cutting tip of the cutting edges of the cutting blade first meets the paper layers ,
- 1E. The method mentioned in point 1D, which may further be distinguished in that the cutting tip precedes the cutting edge and in that the paper layers are cut in each cutting step in a cutting direction opposite to the conveying direction (F).
- 1 F. The method mentioned in point 1D, which may be further characterized in that the cutting tip of the cutting edge trailing and that the paper layers are cut in each cutting step in a direction aligned with the conveying direction (F) cutting direction.
- 1G. The method mentioned in point 1A, which may be further characterized in that a cutting angle (alpha) between the cutting edge of the cutting blade and the cutting edge of the counter knife, as long as the two cutting edges are crossed, greater than 15 ° and less than 60 °.
- 2A. An apparatus for severing substantially continuously in a conveying direction (F) funded paper layers in a direction substantially parallel to the conveying direction (F) aligned separating, wherein by two parallel cuts between each cutting edge of a cutting blade and a cutting edge of a counter knife a waste strip is formed, which Device for the preparation of the two parallel cuts a cutting blade and a counter knife, each having a cutting edge. The device is characterized in that for the preparation of the two parallel cuts in alternating, without intermediate steps successive or synchronous cutting steps, a first and a second pair of co-operating in a shearing cut arranged, substantially rectilinear cutting edges of the cutting blade and counter blade are provided, and in that the apparatus further comprises means with the aid of which the paper layers can be conveyed lying adjacent to the cutting edges of the counter-blades.
- 2 B. The device referred to in point 2A, which may be further characterized in that the cutting blades are arranged around the circumference of a cutting disc rotating in synchronism with the conveying direction (F), wherein for the first pair of cutting edges, the cutting edge of the cutting blade in the plane of the cutting edge of the counter blade is aligned with the first end face of the blade and wherein the cutting edge of the cutting blade is arranged in the plane of a second end face of the blade for the second pair of cutting edges and the cutting edge of the counter blade on the second end of the Cutting disc is aligned.
- 2C. The device mentioned in point 2A or 2B, which may further characterized in that the device comprises means for compressing the paper layers and the rich application of the paper layers to the counter knife, which are preferably designed as active conveying means or auxiliary conveying means.
- 2D. The device mentioned in item 2A, which may further be characterized in that the cutting disc each having a plurality of cutting blades with cutting edges for the first and the second pair of cutting edges, which are arranged alternately around the circumference of the cutting disc.
- 2E. The device referred to in point 2D, which may further be characterized in that the cutting edges of the cutting blades and the cutting edges of the counter-blades are arranged such that equipped as cutting tips ends of the cutting edges of the cutting blade in front of the cutting edges (3, 3 ') on the paper layers and that these cutting tips precede or run after the cutting edges.
- 2F. The apparatus mentioned in item 2A, which may be further characterized in that the cutting disk each having a plurality of cutting blades with cutting edges for the first and the second pair of cutting edges, which are arranged in pairs next to each other along the circumference of the cutting disk and are separated from one another in the circumferential direction by notches.
- 3A. A cut-off wheel suitable for a method according to item 1A or for a device according to item 2A and which is characterized in that cutting blades are arranged alternately around the circumference, which are substantially rectilinear, in the plane of one or the other end face of the cutting wheel Having horizontal cutting edges, wherein each of the cutting edges has a trained as a cutting tip end, which is preferably lying radially outward or radially inward.
- 3B. The cutting disc mentioned in point 3A, which may be further characterized in that it is constructed in one piece or from two mutually coupled, substantially mirror-symmetrical disc parts.
Beispielhafte Ausführungsformen eines Verfahrens und einer Vorrichtung werden im Zusammenhang mit den folgenden Figuren detailliert beschrieben. Dabei zeigen:
- Figur 1
- einen einzigen Schneidschritt einer ersten, beispielhaften Ausfüh- rungsform eines Verfahrens zum Zertrennen von kontinuierlich geförderten Papierlagen (Schnitt entlang der entste- henden Trennfuge);
- Figuren 2 u. 3
- der Schneidbereich einer Vorrichtung zum Zertrennen von kontinu- ierlich geförderten Papierlagen nach dem Verfahren gemäss Fig. 1 (
Fig. 2 : Ansicht parallel zur Achse der Trennscheibe;Fig. 3 : Schnitt senkrecht zur Trennfuge); -
Figur 4 - eine beispielhafte Trennscheibe zur Durchführung des Verfahrens nach Fig. 1 (Blickwinkel parallel zur Scheibenachse);
-
Figur 5 - eine perspektivische Darstellung des Schneidmesserbereichs der Trennscheibe gemäss
Fig. 4 ; -
Figuren 6bis 8 wie Figuren 1,4 und 5 für eine zweite beispielhafte Ausführungs- form des Verfahrens zum Zertrennen von kon- tinuierlich geförderten Papierlagen;- Figur 9
- ein Schneidschritt einer dritten beispielhaften Ausführungsform des Verfahrens;
- Fig.10-12
- Gestaltungen einer Trennscheibe, bestehend aus zwei Scheibenteilen in verschiedenen Ansichten;
- Fig. 13
- die Verwendung eines einzelnen Scheibenteils zum Beschneiden eines Druckereiprodukts an einer Seitenkante.
- FIG. 1
- a single cutting step of a first exemplary embodiment of a method for dicing continuously fed paper layers (cut along the resulting parting line);
- FIGS. 2 and 3 3
- the cutting region of a device for severing continuously fed paper layers according to the method according to FIG. 1 (
Fig. 2 : View parallel to the axis of the cutting wheel;Fig. 3 : Section perpendicular to the parting line); - FIG. 4
- an exemplary cutting disc for carrying out the method of Figure 1 (angle parallel to the disc axis).
- FIG. 5
- a perspective view of the cutting blade portion of the blade according to
Fig. 4 ; - FIGS. 6 to 8
- like figures 1,
4 and 5 for a second exemplary embodiment of the method for dicing continuously fed paper layers; - FIG. 9
- a cutting step of a third exemplary embodiment of the method;
- Fig.10-12
- Design of a cutting wheel, consisting of two disc parts in different views;
- Fig. 13
- the use of a single disc portion for pruning a printed product at a side edge.
Figur 1 illustriert einen einzigen Schneidschritt einer ersten, beispielhaften Ausführungsform des Verfahrens. Dabei sind zur Vereinfachung der Darstellung die zu zertrennenden Papierlagen 1 stationär dargestellt, während sich die Rotationsachse M der Trennscheibe 2 in einer Richtung F' bewegt. Dies entspricht einer Förderung der Papierlagen 1 in der Richtung F bei stationärer Rotationsachse M (Gleichlauf von Förderung F und Scheibenrotation R). Von der Trennscheibe 2 ist nur die Schneidkante 3 eines einzigen Schneidmessers 4 dargestellt. Die Schneidkante 5 des stationären Gegenmessers 6 verläuft in der Auflageebene der Papierlagen 1 und senkrecht zur Rotationsachse M der Trennscheibe 2. Der Abstand zwischen der Rotationsachse M der Trennscheibe 2 und der Oberfläche der Papierlagen 1, bzw. der Schneidkante 5 des Gegenmessers 6 ist derart, dass die Schneidkante 3 des am Umfang der Trennscheibe 2 angeordneten Schneidmessers 4 die Papierlagen 1 vollständig durchdringen kann. Das heisst, ein jenseits der Schneidkante 5 des Gegenmessers 6 liegender Scheitelpunkt der Trennscheibe 2 hat von der Schneidkante 5 einen Abstand, der grösser ist als der radiale Abstand zwischen den beiden Enden der Schneidkante 3. FIG. 1 illustrates a single cutting step of a first exemplary embodiment of the method. In this case, to simplify the illustration, the paper layers 1 to be severed are shown stationary, while the axis of rotation M of the
Die Trennscheibe 2 und das Gegenmesser 6 sind relativ zueinander und das Schneidmesser 4 ist auf der Trennscheibe 2 derart angeordnet, dass das den Schneidkanten 3 in Rotationsrichtung R nachlaufende und radial aussenliegende Ende der Schneidkante 3 die zuerst auf die Papierlagen 1 treffende Schneidspitze 7 darstellt, wobei diese Schneidspitze 7 in einer noch ungeschnittenen Stelle in die Papierlagen 1 eintaucht und die Schneidrichtung (Bewegungsrichtung des Kreuzungspunktes K der Schneidkanten von Schneidmesser und Gegenmesser) mit der Förderrichtung F gleichgerichtet ist.The
Die Schneidkante 3 des Schneidmessers 4 ist in drei aufeinanderfolgenden Phasen dargestellt, die mit Indices .1, .2 und .3 bezeichnet sind. In der ersten Phase (Index .1) beginnt der Schneidschritt, das heisst, die Schneidspitze 7.1 trifft auf die Papierlagen 1. In der dritten Phase (Index .3) ist der Schneidschritt abgeschlossen, das heisst die ganze Schneidkante 3.3 befindet sich auf der Seite des Gegenmessers 6 ausserhalb der Papierlagen 1. Die zweite Phase (Index .2) liegt zeitlich etwa mittig zwischen der ersten und der dritten Phase, wobei die Schneidkante 3.2 des Schneidmessers die Schneidkante 5 des Gegenmessers 6 kreuzt.The
Wie aus der Figur 1 ersichtlich ist, wird der Schneidwinkel alpha zwischen der Schneidkante 3 und der Schneidkante 5 des Gegenmessers 6 während des Schneidschrittes grösser. In der ersten Phase ist der Schneidwinkel (alpha.1) vorteilhafterweise bereits grösser als 15° und wird während des Schneischrittes nicht grösser als beispielsweise 60°. Ferner ist aus der Figur 1 ersichtlich, dass die Rotationsgeschwindigkeit R im Vergleich zur Fördergeschwindigkeit F derart gross sein muss, dass die zweite Kante 8, die zusammen mit der Schneidkante 3 unter einem Winkel von vorteilhafterweise ca. 90° die Schneidspitze 7 bildet und nicht als Schneidkante ausgebildet ist, zu keinem Zeitpunkt des Schneidschrittes eine Position relativ zu den Papierlagen 1 hat, die weiter stromaufwärts liegt als die Position des ersten Auftreffens der Schneidspitze 7.As can be seen from the figure 1, the cutting angle alpha between the
Die Schneidkanten 3 der Schneidmesser 4 sind in der Ebene der in
Die Gegenmesser 6 und 6' sind vorteilhafterweise in einer Schiene geführt angeordnet, derart, dass sie parallel zur Förderrichtung einfach verschoben werden können. Mit einer derartigen Verschiebung wird es möglich eine durch die Schneidschritte örtlich abgenützte Stelle der Schneidkante durch eine noch nicht verwendete oder eine weniger abgenützte Stelle zu ersetzen, was die Lebensdauer des Gegenmessers relevant verlängert.The
Die Pressmittel 10/11 und 10'/11', die nur in
Die Trennscheibe 2 ist beispielsweise einstückig, das heisst aus einer vollen Scheibe gefertigt, wie das in
Beispiele von weiteren Ausführungsformen von Verfahren und Vorrichtung weisen die folgenden Merkmale auf:
- Die Gegenmesser sind nicht stationär sondern bewegen sich in Förderrichtung mit derselben Geschwindigkeit wie die Papierlagen.
- Anstelle einer Kombination einer Trennscheibe mit stationärer Achse mit einer im wesentlichen kontinuierlichen Förderung der Papierlagen sind die Papierlagen stationär und die Achse der Trennscheibe wird parallel zu den Papierlagen bewegt, wie dies in den Figuren 1 und
6 dargestellt ist. In diesem Falle sind auch die Pressmittel mindestens während der Zertrennung stationär. - Anstatt dass die Achse der Trennscheibe über den zu zertrennenden Papierlagen und die Schneidkanten der Gegenmesser darunter angeordnet sind, sind die Achse der Trennscheibe unter den Papierlagen und die Schneidkanten der Gegenmesser darüber angeordnet.
- Die Förderrichtung ist nicht horizontal.
- The counter-blades are not stationary but move in the conveying direction at the same speed as the paper layers.
- Instead of a combination of a stationary axis cutting wheel with a substantially continuous conveying of the paper layers, the paper layers are stationary and the axis of the cutting wheel is moved parallel to the paper layers, as shown in Figures 1 and
6 is shown. In this case, the pressing means are stationary at least during the separation. - Instead of the axis of the cutting disc are arranged over the paper layers to be separated and the cutting edges of the counter knife underneath, are the axis of the cutting disc under the paper layers and the cutting edges of the counter knife arranged above it.
- The conveying direction is not horizontal.
Das Verfahren kann selbstverständlich nicht nur zum Trennen von Papierlagen sondern auch zum Beschneiden derartiger Papierlagen angewendet werden. Da, wie eingangs erwähnt für ein derartiges Beschneiden nur auf der einen Seite der Trennlinie eine hohe Kantenqualität gewünscht wird, kann eine Trennscheibe verwendet werden, an der die Schneidkanten aller Schneidmesser in der Ebene derselben Scheibenstirnseite liegen (siehe unten
Selbstverständlich wird es auch andere Materialien als Papierlagen geben, die mit dem Verfahren und der Vorrichtung in einer guten Qualität zertrennt werden können.Of course, there will be other materials than paper sheets that can be cut with the method and apparatus in good quality.
Wie die Schnittansicht in
Bei beiden Anordnungen gemäss
Claims (12)
- A device for separating paper webs (1) conveyed in an essentially continuous manner in a conveying direction (F), in a separating direction aligned essentially parallel to the conveying direction (F), with a first and second pair of essentially straight-lined cutting edges (3, 5; 3', 5') which are arranged in each case in a cooperating manner in a shearing cut and each consisting of a cutting edge (3, 3') of a cutting knife (4, 4') and a cutting edge (5, 5') of a counter-knife (6, 6'), for creating a waste strip by way of two parallel cuts between the first and the second pair of cutting edges (3, 5; 3', 5'), moreover comprising means with whose help the paper webs (1) can be conveyed in a manner bearing on the cutting edges (5, 5') of the counter-knives (6, 6'), and a rotatable separating disk (2),
characterised in that
in each case a plurality of cutting knives (4, 4') with cutting edges (3, 3') for the first and second pair of cutting edges are arranged about the periphery of the separating disk (2), and for the first pair of cutting edges (3, 5) the cutting edges (3) of the cutting knives (4) lie in the plane of a first end-side of the separating disk (2), and the cutting edge (5) of the counter-knife (6) is aligned to the first end-side of the separating disk (2) and for the second end pair of cutting edges (3', 5') the cutting edges (3') of the cutting knives (4') are arranged in the plane of a second end-side of the separating disk (2), and the cutting edge (5') of the counter-knife (6') is aligned to the second end-side of the separating disk (2), and the separating disk (2) is constructed of two essentially mirror-symmetrical disk parts which are coupled to one another,
wherein the disk parts:a. are arranged relative to one another with an angular offset, in a manner such that the cutting knives of the one disk part are aligned to gaps between the cutting knives of the other disk part and thus part cuts can be carried out consecutively without intermediate steps, in an alternating manner orb. the disk parts are assembled congruently onto one another and thus part cuts can be carried out synchronously. - A device according to claim 1, characterised in that the device comprises means (10/11, 10'/11') for pressing together paper webs (2) and for the snug bearing contact of the paper webs (1) onto the counter-knives (6, 6'), said means being preferably designed as active conveying means or auxiliary conveying means.
- A device according to claim 1 or 2, characterised in that the cutting edges (3, 3') of the cutting knives (4, 4') and the cutting edges (5, 5') of the counter-knives (6, 6') are arranged in a manner such that ends of the cutting edges (3, 3') of the cutting knives (4, 4'), said ends being designed as cutting tips (7, 7'), hit the paper webs (1) before the cutting edges (3, 3') and that these cutting tips (7, 7') lead or trail the cutting edges (3, 3').
- A device according to one of the claims 1 to 3, characterised in that the separating disk (2) in each case comprises a plurality of cutting knives (4, 4') with cutting edges (3, 3') for the first and the second pair of cutting edges which are arranged in each case in pairs next to one another along the periphery of the separating disk (2) and are separated from one another in the peripheral direction by way of notches (13, 13') .
- A separating disk for a device according to one of the claims 1 to 4, wherein in each case a plurality of cutting knives (4, 4') with essentially straight-lined cutting edges (3, 3') are arranged about the periphery of the separating disk (2), wherein first cutting edges (3) of the cutting knives (4) lie in the plane of a first end-side of the separating disk (2), and second cutting edges (3') of the cutting knives (4') are arranged in the plane of a second end-side of the separating disk (2), characterised in that the separating disk (2) is constructed of two essentially mirror-symmetrical disk parts which are coupled to one another,
wherein the disk parts:a. are arranged relative to one another with an angular offset, in a manner such that the cutting knives of the one disk part are aligned to gaps between the cutting knives of the other disk part and thus part cuts can be carried out consecutively without intermediate steps, in an alternating manner orb. the disk parts are assembled congruently onto one another and this part cuts can be carried out synchronously - A separating disk according to claim 5, characterised in that each of the cutting edges (3, 3') comprises an end which is designed as a cutting tip (7, 7') and preferably lies radially outwards or radially inwards.
- A method for separating paper webs (1) conveyed in an essentially continuous manner in a conveying direction, in a separating direction aligned parallel to the conveying direction (F), amid the use of a device according to one of the claims 1 to 4, wherein by way of two parallel cuts between in each case a cutting edge (3, 5) of a cutting knife arranged on the rotating separating disk and a cutting edge of counter-knife which is stationary during the separation, a separating gap and a waste strip arises,
characterised in that
the two parallel cuts are created in alternating cutting steps which are consecutive without intermediate steps or in synchronous cutting steps, wherein in the alternating or synchronous cutting steps, in each case a first and a second pair of essentially straight-lined cutting edges (3, 5 and 3', 5') of cutting knives (4, 4') and counter-knives (6, 6') cooperate in an alternating or synchronous manner in a shearing cut, whilst the paper webs (1) bear on the cutting edges (5, 5') of the counter-knives (6, 6'). - A method according to claim 7, characterised in that the paper webs (1) during the separation are pressed against one another on both sides of the arising separating gap, in a manner such that they bear snugly on the counter-knives (6, 6') where the cutting edges act.
- A method according to claim 7 or 8, characterised in that the alignment of the cutting edges (3, 3') of the cutting knives (4, 4'), and the cutting edges (5, 5') of the counter-knives (6, 6') are matched to one another in a manner such that an end of the cutting edges (3, 3') of the cutting knives (4, 4'), said end designed as a cutting tip (7, 7'), firstly hits the paper webs (1).
- A method according to claim 9, characterised in that the cutting tip (7, 7) leads the cutting edge (3, 3') and that the paper webs (1) in each cutting step are cut in a cutting direction which runs counter to the conveying direction (F).
- A method according to claim 9, characterised in that the cutting tip (7, 7') trails the cutting edge (3, 3') and that the paper webs (1) in each cutting step are cut in a cutting direction which is the same as the conveying direction.
- A method according to one of the claims 7 to 11, characterised in that a cutting angle (alpha) between the cutting edge (3, 3') of the cutting knife (4, 4') and the cutting edge (5, 5') of the counter-knife (6, 6') is larger than 15° and smaller than 60°, as long as the cutting edges are crossed.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH11162007 | 2007-07-11 | ||
EP20080405172 EP2014427B1 (en) | 2007-07-11 | 2008-07-08 | Method and device for separating continuously supplied paper piles |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08405172.1 Division | 2008-07-08 | ||
EP20080405172 Division EP2014427B1 (en) | 2007-07-11 | 2008-07-08 | Method and device for separating continuously supplied paper piles |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2266764A1 EP2266764A1 (en) | 2010-12-29 |
EP2266764B1 true EP2266764B1 (en) | 2012-08-29 |
Family
ID=38698317
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20100010479 Not-in-force EP2266764B1 (en) | 2007-07-11 | 2008-07-08 | Method and device for separating continuously supplied paper piles |
EP20080405172 Not-in-force EP2014427B1 (en) | 2007-07-11 | 2008-07-08 | Method and device for separating continuously supplied paper piles |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20080405172 Not-in-force EP2014427B1 (en) | 2007-07-11 | 2008-07-08 | Method and device for separating continuously supplied paper piles |
Country Status (6)
Country | Link |
---|---|
US (1) | US8069759B2 (en) |
EP (2) | EP2266764B1 (en) |
AT (1) | ATE540788T1 (en) |
AU (1) | AU2008203029B2 (en) |
CA (1) | CA2636961A1 (en) |
DK (1) | DK2014427T3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109015780B (en) * | 2018-08-10 | 2024-02-02 | 安徽格林开思茂光电科技股份有限公司 | Touch screen cutting tool |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1473377A (en) * | 1923-11-06 | Machine for cutting | ||
US3142216A (en) * | 1961-02-07 | 1964-07-28 | Carl F Rupnow | Slot cutting machine for continuously advancing strip material |
FR2394326A1 (en) * | 1977-06-16 | 1979-01-12 | Destructeurs Indls Exploit | Machine for shredding old documents - has two contra rotating shafts with interlocking cutters, some with claws to grip documents |
DE3313103A1 (en) * | 1983-04-12 | 1984-10-18 | Feinwerktechnik Schleicher & Co, 7778 Markdorf | CUTTING DEVICE FOR DEVICES FOR SHREDDING GRINDING MATERIAL FROM FLAT MATERIAL OR FLAT MATERIAL LAYERS, LIKE DOCUMENTS ETC. |
DE3401958C2 (en) | 1984-01-20 | 1986-04-03 | Hagen 8021 Icking Gämmerler | Device for the continuous separation of sheet-like structures lying one on top of the other |
US4589458A (en) * | 1984-10-29 | 1986-05-20 | Vermont American Corporation | Multiple saw blade adjustable dado cutter |
DE3536989A1 (en) * | 1985-10-17 | 1987-04-23 | Aichele Werkzeuge Gmbh & Co Kg | Cutter disc, especially for cutting paper |
US4643060A (en) * | 1986-02-03 | 1987-02-17 | Westvaco Corporation | Air cooled slotter and slitter blade cutting edges |
US4717328A (en) * | 1986-04-07 | 1988-01-05 | Alterio Joseph C D | Slitter-corrugator apparatus for pasta |
US5309962A (en) * | 1993-05-13 | 1994-05-10 | Vermont American Corporation | Multiple saw blade adjustable dado cutter assembly including a cam assembly and nestable dado blades |
EP0960006B1 (en) * | 1997-01-30 | 2002-04-17 | Ferag AG | Method and device for cutting continuously delivered flat objects |
US6073527A (en) * | 1997-04-11 | 2000-06-13 | Marquip, Inc. | Method and apparatus for direct shingling of cut sheets at the cutoff knife |
US5890409A (en) * | 1997-05-20 | 1999-04-06 | Zenith Cutter Co. | Slotting blade with out-of-phase serrations |
US7044410B2 (en) * | 2003-11-26 | 2006-05-16 | Michilin Prosperity Co., Ltd. | Round undulating blade and blade module for shredder |
DE202004004275U1 (en) * | 2004-03-17 | 2004-06-03 | Imabt Weichselbaum Inh. Bernhard Teufel E.K. | Blade for a cutting device, especially a rotary cutting machine, comprises a spacer element arranged between a first and a second blade element |
DE102004020256A1 (en) | 2004-04-26 | 2005-11-17 | Gramatec Gmbh | Cutting knife for rotary cutting machines |
-
2008
- 2008-07-07 CA CA 2636961 patent/CA2636961A1/en not_active Abandoned
- 2008-07-08 AT AT08405172T patent/ATE540788T1/en active
- 2008-07-08 DK DK08405172T patent/DK2014427T3/en active
- 2008-07-08 EP EP20100010479 patent/EP2266764B1/en not_active Not-in-force
- 2008-07-08 EP EP20080405172 patent/EP2014427B1/en not_active Not-in-force
- 2008-07-09 AU AU2008203029A patent/AU2008203029B2/en not_active Expired - Fee Related
- 2008-07-10 US US12/170,757 patent/US8069759B2/en not_active Expired - Fee Related
Also Published As
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CA2636961A1 (en) | 2009-01-11 |
AU2008203029A1 (en) | 2009-01-29 |
US20090013841A1 (en) | 2009-01-15 |
US8069759B2 (en) | 2011-12-06 |
EP2266764A1 (en) | 2010-12-29 |
EP2014427A3 (en) | 2009-03-04 |
EP2014427A2 (en) | 2009-01-14 |
ATE540788T1 (en) | 2012-01-15 |
AU2008203029B2 (en) | 2013-05-02 |
EP2014427B1 (en) | 2012-01-11 |
DK2014427T3 (en) | 2012-04-16 |
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