EP0408912B1 - Method and device for production of paperstacks - Google Patents
Method and device for production of paperstacks Download PDFInfo
- Publication number
- EP0408912B1 EP0408912B1 EP90111612A EP90111612A EP0408912B1 EP 0408912 B1 EP0408912 B1 EP 0408912B1 EP 90111612 A EP90111612 A EP 90111612A EP 90111612 A EP90111612 A EP 90111612A EP 0408912 B1 EP0408912 B1 EP 0408912B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- suction
- laying
- rollers
- gripping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/24—Interfolding sheets, e.g. cigarette or toilet papers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/16—Rotary folders
- B65H45/162—Rotary folders with folding jaw cylinders
Definitions
- the invention relates to a device for producing U or. Zig-zag-shaped single sheets or cloths stacked one inside the other and overlapping in a stack with the features of the preamble of claim 1.
- a device of the type mentioned is known from US-A-4 778 441 and has two sets of rollers for processing two material webs, two further depositing rollers, which cooperate to form stacks and folds, are arranged and driven in a machine frame and have a strip-like crease on their circumference - And fold cutting as well as suction elements. Furthermore, at least one knife roller with a separating knife as well as transport, pull or. Deflection rollers provided.
- the depositing rollers of this known device show as Kink and rebate cutting edges in cross-section of wedge-shaped elements which engage in correspondingly wedge-shaped recesses in the other laying roller and thereby form the material to be processed accordingly.
- the papers or cloths prepared in this way are also deposited on a stack in the correct position.
- the fold edge formation is unsatisfactory, since it is dependent on the relatively large wedge angle of the fold and fold cutting edge.
- the stacks are usually very airy and have a large height with the same number of parts deposited. It is also difficult to identify production errors immediately.
- DE-C-178 663 Another device for zigzag-shaped depositing of paper webs or the like is known from DE-C-178 663.
- folding devices are attached to rollers running against one another and have grippers or jaws, with the aid of which the paper is folded.
- the paper is pressed with the aid of insertion knives into a gap in the respective counter-roller and then folded relatively sharply with the aid of the grippers or jaws and then placed alternately on the right and left.
- This known device is only able to reliably detect the material of a single material layer during the fold formation.
- the processing of two layers of material is not possible, so that this device can, for example, only process endless, perforated material webs and cannot be used for processing material webs which consist of a sequence of separated single sheets. This also applies in particular because the single sheets must have a small distance of up to 5 mm during processing for manufacturing reasons.
- the invention is therefore based on the object of providing a device of the type mentioned which permits reliable and precise fold formation and furthermore the storage of folded individual sheets in a mutually interlocking stack position. This should also be possible if the single sheets are at a short distance from each other during processing.
- the device according to the invention has laying rollers which, in addition to the suction elements, are provided with at least one gripping element which is movable relative to the laying roller.
- the position and arrangement of the suction elements also play an important role, according to the invention at least one suction element in the gripping element and one suction element next to the gripping element and a third suction element in each case being arranged next to the associated folding and folding blade on the circumference of the depositing roller.
- the movable gripping element is arranged in a recess which is open towards the circumference of the laying roller and forms a gripping gap with a trailing or leading, fixed edge of the laying roller.
- the gripping gap and those immediately in front or behind and on the movable gripping element suction elements arranged on the fixed edge are also designed so that both the single sheet to be folded or folded and the ends of the two adjacent single sheets lying inside these can be gripped safely and reliably. Due to the position of the suction elements, this is also ensured if the ends of the inner sheets are at a short distance from one another during processing.
- the single sheets are gripped when the folding and folding blade on the other laying roller has pressed the single sheet into the gripping nip and the suction elements fix the exact position and position of the single sheet to be folded and folded and the ends of the adjacent single sheets lying in it. As this enables good fold formation, guidance and safe transport of the individual sheets, it is also possible to work at a high working speed.
- a device 1 for U-shaped or zigzag-shaped folding and for the production of folded cloths which are overlapping or interlocking and which are stored in a stack 2 or of single sheets 3 comprises, according to FIG. 1, two sets of rolls 4 and 5 for each Material web 6, 7 and in each case one depositing roller 8, 9 which cooperates in the formation of the stack, directly at the stacking point 10.
- each roller set 4, 5 has at least one knife roller 11 with a separating knife 12 as well as transport, pulling and / or deflecting rollers 13, 14. All rollers are stored in a machine frame 15 (Fig. 3). The respective direction of rotation of the rollers results from the arrows in FIG. 1.
- the U-shaped or zigzag-shaped depositing of the individual sheets 3 and the insertion of the next individual sheet 3 between the parts or halves of the single sheet 3 to be folded is carried out with the aid of the two depositing rollers 8, 9, each of which is arranged on the one depositing roller 8 and 9 folding and rebating blades 16 and on the other laying roller 9 and 8 assigned and initially open gripping gaps 17 and gripping elements 18.
- the endless web of material 6 or 7 is first cut into individual sheets 3 with the aid of the separating knife 12 on the cutter roller 11, then the individual sheets 3 are separated somewhat, for example up to 5 mm, and then they become the laying roller 8 or 9 in this way supplied that a single sheet 3 transported from the depositing roller 8 to the stacking point 10 by half a sheet length or by a partial length to one of the other depositing roller 9 fed single sheet 3a is offset.
- the leading end 19 of the single sheet 3a meets at the nip 57 of the two laying rollers 8, 9 on the center of the single sheet 3 fed by the other laying roller 8, provided that the single sheet has a fold.
- the leading end 19 of the single sheet 3a also meets at the nip 57 at a fold to be formed in the other single sheet 3.
- the individual sheet 3a extends or extends on the laying roller 9, as does the single sheet 3 on the laying roller 8 in the corresponding working position from a folding and folding cutter 16 to the next folding and folding cutter 20 in the circumferential direction and afterwards.
- the gripping gaps 17 and gripping elements 18 are arranged on the two laying rollers 8 and 9, in each case halfway between two folding and folding blades 16 and 20 or 16 and 21 or 20 and 21.
- a single sheet 3 for example located on the depositing roller 8, in the position according to FIG. 1 is pressed by the folding and folding blade 16 of the depositing roller 9 into the gripping gap 17 of the depositing roller 8 and then there with the aid of the gripping element 18 positionally fixed, the single sheet 3 is gripped on the laying roller 8 in the middle with simultaneous buckling or fold formation.
- the leading end 19 of the next single sheet 3a transported on the depositing roller 9 to the stacking point 10 and the trailing end 22 of the last, already deposited single sheet 3 by means of suction elements 23, 24 to be explained in more detail and acting through the folded single sheet 3.
- the suction elements 23, 24 release the leading end 19 of the single sheet 3a and the trailing end of the last single sheet 3 that has already been deposited.
- the gripping gap 17 and the gripping element 18 reach the upper left edge of the stack 2, the gripping element 18 releases the single sheet 3 packed in the middle.
- the folding and folding cutter 16 is on the laying roller 8 in the area of the narrowest point of the roller gap 57 and presses the single sheet 3a into the gripping gap 17, whereupon the latter closes by pivoting the gripping element 18.
- the laying roller 9 which releases the single sheet 3a as soon as the gripping element 18 is at the upper right end of the stack 2.
- the formation of folds and folds as well as the storage in the stack takes place in basically the same way for all further individual sheets 3 and 3a which are transported to the stacking point 10.
- At least one suction element 23 is arranged on the gripping element 18 and another suction element 24 is arranged directly next to the gripping element 18 on the circumference 25 of the laying roller 8, 9.
- Another suction element 26 is located immediately next to and in the running direction of the laying rollers 8, 9 behind each buckling and Folding cutter 16, 20 and 21. All suction elements 23, 24 and 26 are suction openings located in the contour of the laying rollers 8, 9, to which individual suction channels 27, each of which can be controlled separately, in the gripping elements 18 and suction channels 28 and 29 in the laying rollers 8, 9 to lead.
- a suction air control valve 30 (Fig.
- the gripping element 18 is arranged in a recess 31 of the laying roller 8, 9 which is open towards the periphery 25. It is pivotally mounted and has the shape of a flap which has a clamping piece 32 with a clamping surface 33 at its free end. Relative to the direction of rotation of the depositing rollers 8, 9, the clamping surfaces 33 are arranged in a trailing manner on the clamping pieces. So that the gripping elements 18 can be effective, their clamping surfaces 33 are each assigned a counter surface in the form of a contact surface 34 rigidly arranged on the depositing roller 8, 9. When the gripping element 18 is open, the gripping gap 17 is in each case between the clamping piece 32 or its clamping surface 33 and the contact surface 34 on the laying roller 8, 9.
- the gripping element 18 is arranged on a shoe axis 35, which is used to control the Pivotal movement has a control lever 36.
- the control lever 36 carries a guide roller 37 and a stationary control cam 38 is also provided, with the aid of which the pivoting movements of the pivot axis 35 or the gripping element 18 are positively controlled.
- the control cam 38 is finally located on a cam carrier 39 which is arranged outside the depositing rollers 8, 9 (FIG. 3).
- each suction air duct 27 leads from the suction opening located in the lateral surface 40 of each laying roller 8, 9 through the respective gripping element 18 and then through its pivot axis 35 to the suction air control valve 30.
- the other suction channels 28 and 29 are connected to the suction air control valve 30 or its rotating control disk 44 through further bores 42 and 43.
- the bores 41, 42 and 43 are in air-conducting connection with control windows 41 ', 42' and 43 'assigned to them.
- the bores 42 and 43 run between the actual roller body and the control disk 44 in extension pieces 42 ′′ and 43 ′′ assigned to them.
- the suction air control valve 30 has a stationary control disk 45, in which there are suction air control channels 47, 58 and 59 and channels 47 'and 58' for atmospheric pressure compensation.
- the suction air control channels 47, 58 and 59 are connected by means of suction ports 46 and 46 'to a suction air source, not shown in the figures.
- the two control disks 44 and 45 effect the cyclical generation and cancellation of the suction air, the control windows 41 ′, 42 ′ and 43 ′ thereof being located on the control channels 47 and 47 ′ or 58, 58 ′ and 59, 58 ′. move past.
- the suction air control valve 30 is arranged concentrically by means of a bearing 30 '(FIG. 4) to the drive and bearing shaft 48 of the laying roller 8, 9 and secured in a rotationally fixed manner on the machine frame 15 by means of a bolt 49 (FIG. 3).
- Ball bearings 50 serve to mount the drive and bearing shaft 48 in the machine frame 15 and a gear 51 is provided for the drive, as can also be seen from FIG.
- the gripping element 18 or its pivoting and control lever 36 is acted upon by a spring 52 which presses the gripping element 18 into the closed position.
- the control cam 38 is used, which, via the guide roller 37 and the control lever 36, pivots the gripping element 18 with its clamping piece 32 into the open position when the gripping element 18 of the one laying roller 8 or 9 and the folding and folding cutter 16 the other depositing roller 8 or 9 are in the area of the nip 57 or its narrowest point, as shown in Figure 2.
- the part of the control cam 38 which causes the opening extends only over a relatively short arc in the area of the roller gap 57 and the lateral, upper edge of the stack 2, as is also shown in FIG. 2.
- the storage of the laying roller 8, 9 in the machine frame 15 takes place largely symmetrically according to FIG.
- the same also applies to the suction air control, so that one suction air control valve 30 is expediently arranged axially at each end of the laying roller 8, 9 (FIG. 3).
- the two laying rollers 8, 9 each have a plurality of gripping elements 18 and buckling and folding blades 16 axially next to one another. In between there are grooves 53 so that the laying rollers 8, 9 are slightly comb-shaped as a result.
- the gripping gap 17 extends radially. The same applies to the clamping surfaces 33 and the contact surfaces 34 on the laying rollers 8, 9.
- the kinking and folding blades 16, 20 and 21 are mounted in the laying rollers 8, 9 by means of elastic holders 60.
- each laying roller 8 or 9 is fed a material web prepared by separating cuts or single sheets 3, 3a are fed.
- a suction element 26 is required in each of the two laying rollers 8, 9 behind the kinking and folding blades 16, 20, 21.
- the double-layer web obtained in this way is only taken over by a laying roller 8 and fed to the nip 57.
- this laying roller 8 must be equipped with suction elements 26 behind the folding and folding blades 16, 20, 21.
- the other laying roller 9 does not require any suction elements behind its kinking and folding edges 16, 20 and 21.
- Both exemplary embodiments work according to the same method.
- the result of this is that one single sheet with the location of the fold to be formed and two other single sheets with their ends are pressed at the same point under lateral guidance from an original direction of movement and then fixed there with the formation of folds, the ends of the a single sheet lie in the fold of the other single sheet and that the single sheets are fixed mechanically and with suction air.
Landscapes
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Herstellen von U-bzw. zick-zack-förmig gestalteten und in einem Stapel ineinander und überlappend abgelegten Einzelblättern bzw. Tüchern mit den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to a device for producing U or. Zig-zag-shaped single sheets or cloths stacked one inside the other and overlapping in a stack with the features of the preamble of
Eine Vorrichung der genannten Art ist aus der US-A-4 778 441 bekannt und weist zwei Rollensätze zur Verarbeitung von zwei Materialbahnen auf, wobei ferner zwei zur Stapelbildung sowie zur Falzbildung zusammenwirkende Ablegewalzen in einem Maschinengestell angeordnet sowie angetrieben sind und an ihrem Umfang leistenförmige Knick- und Falzschneiden sowie Saugelemente aufweisen. Ferner sind für jede Materialbahn mindestens je eine Messerwalze mit einem Trennmesser sowie Transport-, Zug-bzw. Umlenkwalzen vorgesehen.A device of the type mentioned is known from US-A-4 778 441 and has two sets of rollers for processing two material webs, two further depositing rollers, which cooperate to form stacks and folds, are arranged and driven in a machine frame and have a strip-like crease on their circumference - And fold cutting as well as suction elements. Furthermore, at least one knife roller with a separating knife as well as transport, pull or. Deflection rollers provided.
Die Ablegewalzen dieser bekannten Vorrichtung weisen als Knick- und Falzschneide im Querschnitt keilförmige Elemente auf, die in entsprechend keilförmige Vertiefungen in der jeweils anderen Ablegewalze eingreifen und dabei das zu verarbeitende Material entsprechend formen. Auch die Ablage der derart vorbereiteten Papiere oder Tücher auf einem Stapel erfolgt lagegenau. Unbefriedigend ist jedoch die Falzkantenbildung, da sie von dem relativ großen Keilwinkel der Knick-und Falzschneide abhängig ist. Dies hat zur Folge, daß die Stapel meist sehr luftig sind und bei gleicher Anzahl von abgelegten Teilen eine große Höhe besitzen. Auch ist es schwierig, Produktionsfehler sofort zu erkennen.The depositing rollers of this known device show as Kink and rebate cutting edges in cross-section of wedge-shaped elements which engage in correspondingly wedge-shaped recesses in the other laying roller and thereby form the material to be processed accordingly. The papers or cloths prepared in this way are also deposited on a stack in the correct position. However, the fold edge formation is unsatisfactory, since it is dependent on the relatively large wedge angle of the fold and fold cutting edge. As a result, the stacks are usually very airy and have a large height with the same number of parts deposited. It is also difficult to identify production errors immediately.
Eine andere Vorrichtung zum zick-zack-förmigen Ablegen von Papierbahnen o. dgl. ist aus der DE-C- 178 663 bekannt. Bei dieser Vorrichtung sind Falzvorrichtungen an gegeneinander laufenden Walzen befestigt und weisen Greifer oder Backen auf, mit deren Hilfe die Falzung des Papieres erfolgt. Hierbei wird das Papier mit Hilfe von Einführmessern in einen in der jeweiligen Gegenwalze befindlichen Spalt gedrückt und sodann mit Hilfe der Greifer bzw. Backen relativ scharfkantig gefaltet und sodann abwechselnd rechts und links abgelegt. Diese bekannte Vorrichtung ist nur in der Lage, während der Falzbildung das Material einer einzigen Materiallage sicher zu erfassen. Die Bearbeitung von zwei Materiallagen ist nicht möglich, so daß diese Vorrichtung z.B. nur endlose, perforierte Materialbahnen verarbeiten kann und sich nicht zur Verarbeitung von Materialbahnen verwenden läßt, die aus einer Folge von abgetrennten Einzelblättern besteht. Dies gilt ferner insbesondere auch deshalb, weil die Einzelblätter aus fertigungstechnischen Gründen während der Verarbeitung einen geringen Abstand von bis zu 5 mm erhalten müssen.Another device for zigzag-shaped depositing of paper webs or the like is known from DE-C-178 663. In this device, folding devices are attached to rollers running against one another and have grippers or jaws, with the aid of which the paper is folded. Here, the paper is pressed with the aid of insertion knives into a gap in the respective counter-roller and then folded relatively sharply with the aid of the grippers or jaws and then placed alternately on the right and left. This known device is only able to reliably detect the material of a single material layer during the fold formation. The processing of two layers of material is not possible, so that this device can, for example, only process endless, perforated material webs and cannot be used for processing material webs which consist of a sequence of separated single sheets. This also applies in particular because the single sheets must have a small distance of up to 5 mm during processing for manufacturing reasons.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung der genannten Art zu schaffen, die eine sichere und exakte Falzbildung und ferner die Ablage von gefalteten Einzelblättern in wechselseitiger, ineinander greifender Stapellage gestattet. Dies soll ferner auch dann möglich sein, wenn sich die Einzelblätter während der Verarbeitung in einem geringen Abstand zueinander befinden.The invention is therefore based on the object of providing a device of the type mentioned which permits reliable and precise fold formation and furthermore the storage of folded individual sheets in a mutually interlocking stack position. This should also be possible if the single sheets are at a short distance from each other during processing.
Gelöst wird diese der Erfindung zugrunde liegende Aufgabe mit den Merkmalen des kennzeichnenden Teiles des Patentanspruches 1.This object on which the invention is based is achieved with the features of the characterizing part of
Die erfindungsgemäße Vorrichtung weist Ablegewalzen auf, die zusätzlich zu den Saugelementen mit mindestens einem relativ zur Ablegewalze beweglichen Greifelement versehen sind. Dabei spielt ferner die Lage und Anordnung der Saugelemente eine wesentliche Rolle, wobei gemäß der Erfindung mindestens ein Saugelement im Greifelement und ein Saugelement neben dem Greifelement sowie ein drittes Saugelement jeweils neben der zugeordneten Knick- und Falzschneide jeweils am Umfang der Ablegewalze angeordnet sind.The device according to the invention has laying rollers which, in addition to the suction elements, are provided with at least one gripping element which is movable relative to the laying roller. The position and arrangement of the suction elements also play an important role, according to the invention at least one suction element in the gripping element and one suction element next to the gripping element and a third suction element in each case being arranged next to the associated folding and folding blade on the circumference of the depositing roller.
Das bewegliche Greifelement ist in einer zum Umfang der Ablegewalze hin offenen Ausnehmung angeordnet und bildet mit einer nachlaufenden oder vorlaufenden, festen Kante der Ablegewalze einen Greifspalt. Der Greifspalt und die unmittelbar davor bzw. dahinter und am beweglichen Greifelement bzw. an der festen Kante angeordneten Saugelemente sind darüber hinaus so gestaltet, daß jeweils sowohl das zu faltende bzw. zu knickende Einzelblatt als auch die in diesen innen liegenden Enden der beiden benachbarten Einzelblätter sicher und zuverlässig gegriffen werden können. Aufgrund der Lage der Saugelemente ist dies ferner auch dann gewährleistet, wenn bei der Verarbeitung sich die Enden der innen liegenden Blätter in einem geringen Abstand voneinander befinden.The movable gripping element is arranged in a recess which is open towards the circumference of the laying roller and forms a gripping gap with a trailing or leading, fixed edge of the laying roller. The gripping gap and those immediately in front or behind and on the movable gripping element suction elements arranged on the fixed edge are also designed so that both the single sheet to be folded or folded and the ends of the two adjacent single sheets lying inside these can be gripped safely and reliably. Due to the position of the suction elements, this is also ensured if the ends of the inner sheets are at a short distance from one another during processing.
Die Einzelblätter werden gegriffen, wenn die Knick- und Falzschneide auf der jeweils anderen Ablegewalze das Einzelblatt in den Greifspalt gedrückt hat und die Saugelemente die genaue Lage und Position des abzuknickenden und zu faltenden Einzelblattes und der in ihm liegenden Enden der benachbarten Einzelblätter fixieren. Da somit eine gute Falzbildung, Führung und ein sicherer Transport der Einzelblätter möglich ist, kann auch mit einer hohen Arbeitsgeschwindigkeit gearbeitet werden.The single sheets are gripped when the folding and folding blade on the other laying roller has pressed the single sheet into the gripping nip and the suction elements fix the exact position and position of the single sheet to be folded and folded and the ends of the adjacent single sheets lying in it. As this enables good fold formation, guidance and safe transport of the individual sheets, it is also possible to work at a high working speed.
Weitere Merkmale der Erfindung gehen aus der Beschreibung und den Ansprüchen im Zusammenhang mit der Zeichnung hervor.Further features of the invention emerge from the description and the claims in connection with the drawing.
Die Erfindung wird nachstehend anhand eines Ausführungsbeispieles, das in der Zeichnung prinzipmäßig dargestellt ist, näher beschrieben. Dabei zeigen:
- Fig. 1:
- eine Prinzipskizze der Rollensätze für die beiden Materialbahnen im Bereich der Stapelstelle;
- Fig. 2:
- in größerem Maßstab sowie abgebrochen die beiden Ablegewalzen im Bereich der Stapelstelle;
- Fig. 3:
- eine Prinzipskizze der Vorrichtung in Draufsicht;
- Fig. 4:
- eine Ansicht der stationären Steuerscheibe des Saugluftsteuerventils in Richtung der Pfeile IV/IV in Fig, 3;
- Fig. 5:
- eine Ansicht der rotierenden Steuerscheibe in Richtung der Pfeile V/V in Fig. 3 und
- Fig. 6:
- eine Prinzipskizze einer abgewandelten Rollenanordnung, bei der zwei vorbereitete Materialbahnen auf einer gemeinsamen Walze zusammengeführt werden und danach als Doppelbahn den beiden Ablegewalzen zugeführt werden.
- Fig. 1:
- a schematic diagram of the roller sets for the two material webs in the area of the stacking point;
- Fig. 2:
- on a larger scale and broken off the two depositing rollers in the area of the stacking point;
- Fig. 3:
- a schematic diagram of the device in plan view;
- Fig. 4:
- a view of the stationary control disc of the suction air control valve in the direction of arrows IV / IV in Fig. 3;
- Fig. 5:
- a view of the rotating control disc in the direction of arrows V / V in Fig. 3 and
- Fig. 6:
- a schematic diagram of a modified roller arrangement, in which two prepared material webs are brought together on a common roller and then fed to the two laying rollers as a double web.
Eine Vorrichtung 1 zum U- bzw. zick-zack-förmigen Falten und zum Herstellen von in einem Stapel 2 überlappend bzw. ineinander greifend abgelegten, gefalteten Tüchern bzw. von Einzelblättern 3 umfaßt gemäß Fig. 1 zwei Rollensätze 4 bzw. 5 für je eine Materialbahn 6, 7 und je eine, bei der Stapelbildung zusammenwirkende Ablegewalze 8, 9 unmittelbar an der Stapelstelle 10. Jeder Rollensatz 4, 5 weist ausser der Ablegewalze 8, 9 mindestens eine Messerwalze 11 mit einer Trennmesser 12 sowie Transport-, Zug- und/oder Umlenkwalzen 13, 14 auf. Sämtliche Walzen sind in einem Maschinengestell 15 (Fig. 3) gelagert. Die jeweilige Drehrichtung der Walzen ergibt sich aufgrund der Pfeile in Fig. 1.A
Die U- bzw. zick-zack-förmige Ablage der Einzelblätter 3 und das Einführen des jeweils nächsten Einzelblattes 3 zwischen die Teile bzw. Hälften des zu faltenden Einzelblattes 3 erfolgt mit Hilfe der beiden Ablegewalzen 8, 9, die hierzu jeweils auf der einen Ablegewalze 8 bzw. 9 Knick- und Falzschneiden 16 und auf der jeweils anderen Ablegewalze 9 bzw. 8 zugeordnete und zunächst offene Greifspalten 17 und Greifelemente 18 aufweisen. Im Betrieb wird die endlose Materialbahn 6 bzw. 7 zunächst mit Hilfe des Trennmessers 12 auf der Messerwalze 11 in Einzelblätter 3 geschnitten, danach werden die Einzelblätter 3 etwas, beispielsweise bis zu 5 mm voneinander entfernt und sodann werden sie der Ablegewalze 8 bzw. 9 derart zugeführt, daß ein von der Ablegewalze 8 zur Stapelstelle 10 transportiertes Einzelblatt 3 um eine halbe Blattlänge bzw. um eine Teillänge zu einem von der anderen Ablegewalze 9 zugeführten Einzelblatt 3a versetzt ist. Das vorlaufende Ende 19 des Einzelblattes 3a trifft am Walzenspalt 57 der beiden Ablegewalzen 8, 9 auf die Mitte des von der anderen Ablegewalze 8 zugeführten Einzelblattes 3, sofern das Einzelblatt einen Falz aufweist. Wenn das Einzelblatt 3 zwei, entgegengesetzt gerichtete Knickstellen oder Falze oder noch mehr Knickstellen bzw. Falze erhält, so trifft das vorlaufende Ende 19 des Einzelblattes 3a am Walzenspalt 57 ebenfalls auf eine im anderen Einzelblatt 3 zu bildende Knickstelle. Dabei erstreckt sich bzw. reicht das Einzelblatt 3a auf der Ablegewalze 9 ebenso wie das Einzelbatt 3 auf der Ablegewalze 8 in der entsprechenden Arbeitsposition von einer Knick- und Falzschneide 16 bis zu der in Umfangsrichtung sowie nachlaufend nächsten Knick- und Falzschneide 20.The U-shaped or zigzag-shaped depositing of the
Die Greifspalte 17 und Greifelemente 18 sind auf den beiden Ablegewalzen 8 und 9 jeweils auf der halben Länge zwischen zwei Knick- und Falzschneiden 16 und 20 bzw. 16 und 21 bzw. 20 und 21 angeordnet. Bei der Knick- und Falzbildung wird daher ein z.B. auf der Ablegewalze 8 befindliches Einzelblatt 3 in der Position gemäß Fig. 1 von der Knick- und Falzschneide 16 der Ablegewalze 9 in den Greifspalt 17 der Ablegewalze 8 gedrückt und dann dort mit Hilfe des Greifelementes 18 lagemäßige fixiert, wobei bei gleichzeitiger Knick- bzw. Falzbildung das Einzelblatt 3 auf der Ablegewalze 8 mittig ergriffen wird. Ferner werden dabei das vorlaufende Ende 19 des nächsten, auf der Ablegewalze 9 zur Stapelstelle 10 transportierten Einzelblattes 3a und das nachlaufende Ende 22 des letzten, bereits abgelegten Einzelblattes 3 mittels noch näher zu erläuternden und durch das gefalzte Einzelblatt 3 hindurch wirkenden Saugelementen 23, 24 erfaßt. Bei der Weiterbewegung der Ablegewalze 8 zum Stapel 2 geben die Saugelemente 23, 24 das vorlaufende Ende 19 des Einzelblattes 3a und das nachlaufende Ende des letzten, bereits abgelegten Einzelblattes 3 frei. Erreicht der Greifspalt 17 und das Greifelement 18 den linken, oberen Rand des Stapels 2, gibt das Greifelement 18 das mittig gepackte Einzelblatt 3 wieder frei. Inzwischen ist die Knick- und Falzschneide 16 auf der Ablegewalze 8 im Bereich der engsten Stelle des Walzenspaltes 57 und drückt das Einzelblatt 3a in den Greifspalt 17, woraufhin sich dieser durch Verschwenken des Greifelementes 18 schließt. Nunmehr erfolgt derselbe Arbeitsvorgang wie beschrieben mit der Ablegewalze 9, die das Einzelblatt 3a freigibt, sobald sich das Greifelement 18 am rechten, oberen Ende des Stapels 2 befindet. Die Knick-und Falzbildung sowie die Ablage im Stapel erfolgt bei allen weiteren, zur Stapelstelle 10 transportieren Einzelblättern 3 und 3a in grundsätzlich gleicher Art und Weise.The
Zur Führung und um einen sicheren Transport der Einzelblätter 3 bzw. 3a sicherzustellen, sind mindestens je ein Saugelement 23 am Greifelement 18 und ein weiteres Saugelement 24 unmittelbar neben dem Greifelement 18 jeweils am Umfang 25 der Ablegewalze 8, 9 angeordnet. Ein weiteres Saugelement 26 befindet sich unmittelbar neben sowie in Laufrichtung der Ablegewalzen 8, 9 hinter jeder Knick- und Falzschneide 16, 20 und 21. Alle Saugelemente 23, 24 und 26 sind in der Kontur der Ablegewalzen 8, 9 befindliche Saugöffnungen, zu denen einzelne, jeweils gesondert ansteuerbare Saugkanäle 27 in den Greifelementen 18 sowie Saugkanäle 28 und 29 in den Ablegewalzen 8, 9 führen. Über ein Saugluft-Steuerventil 30 (Fig. 3 - 5) wird in den Saugkanälen 27 - 29 der beiden Ablegewalzen 8, 9 derart im Takt Unterdruck erzeugt bzw. wieder aufgehoben, daß sich die Einzelblätter 3 und 3a in der gewünschten Weise zu einem Stapel 2 ablegen. Diese Art der Saugluftansteuerung ist grundsätzlich bekannt und daher nicht Gegenstand der Erfindung.For guidance and to ensure safe transport of the
Das Greifelement 18 ist in einer zum Umfang 25 hin offenen Ausnehmung 31 der Ablegewalze 8, 9 angeordnet. Es ist schwenkbar gelagert und besitzt die Form einer Klappe, die an ihrem freien Ende ein Klemmstück 32 mit einer Klemmfläche 33 aufweist. Bezogen auf die Drehrichtung der Ablegewalzen 8, 9 sind die Klemmflächen 33 an den Klemmstücken jeweils nachlaufend angeordnet. Damit die Greifelemente 18 wirksam sein können, ist ihren Klemmflächen 33 jeweils eine Gegenfläche in Form einer an der Ablegewalze 8, 9 starr angeordneten Anlagefläche 34 zugeordnet. Bei geöffnetem Greifelement 18 befindet sich der Greifspalt 17 jeweils zwischen dem Klemmstück 32 bzw. seiner Klemmfläche 33 und der Anlagefläche 34 an der Ablegewalze 8, 9.The gripping
Wie Figur 2 ferner zeigt, ist das Greifelement 18 auf einer Schuenkachse 35 angeordnet, die zur Steuerung der Schwenkbewegung einen Steuerhebel 36 aufweist. Der Steuerhebel 36 trägt eine Führungsrolle 37 und ferner ist eine stationär angeordnete Steuerkurve 38 vorgesehen, mit deren Hilfe die Schwenkbewegungen der Schwenkachse 35 bzw. des Greifelementes 18 zwangsgesteuert werden. Die Steuerkurve 38 befindet sich schließlich an einem Kurventräger 39, der ausserhalb der Ablegewalzen 8, 9 angeordnet ist (Fig. 3).As FIG. 2 also shows, the gripping
Wie die Figuren ferner zeigen, führt jeder Saugluftkanal 27 von der in der Mantelfläche 40 jeder Ablegewalze 8, 9 befindlichen Saugöffnung durch das jeweilige Greifelement 18 und sodann durch dessen Schwenkachse 35 zu dem Saugluft-Steuerventil 30. Hierzu befindet sich eine Bohrung 41 in jeder Schwenkachse 35. Durch weitere Bohrungen 42 und 43 sind die anderen Saugkanäle 28 und 29 mit dem Saugluft-Steuerventil 30 bzw. seiner rotierenden Steuerscheibe 44 verbunden. Innerhalb der Steuerscheibe 44 stehen die Bohrungen 41, 42 und 43 mit ihnen zugeordneten Steuerfenstern 41', 42' und 43' in luftleitender Verbindung. Dabei verlaufen die Bohrungen 42 und 43 zwischen dem eigentlichen Walzenkörper und der Steuerscheibe 44 in ihnen zugeordneten Verlängerungsstücken 42'' und 43''.As the figures further show, each
Neben der rotierenden Steuerscheibe 44 weist das Saugluft-Steuerventil 30 eine stationäre Steuerscheibe 45 auf, in der sich Saugluft-Steuerkanäle 47, 58 und 59 und Kanäle 47' und 58' für den atmosphärischen Druckausgleich befinden. Die Saugluft-Steuerkanäle 47, 58 und 59 sind mittels Saugstutzen 46 und 46' mit einer in den Figuren nicht dargestellten Saugluftquelle verbunden. Die beiden Steuerscheiben 44 und 45 bewirken bei Drehung der Steuerscheibe 44 die taktmäßige Erzeugung und Aufhebung der Saugluft, wobei sich deren Steuerfenster 41', 42' und 43' an den Steuerkanälen 47 und 47' bzw. 58, 58' und 59, 58' vorbeibewegen.In addition to the
Das Saugluft-Steuerventil 30 ist konzentrisch mittels eines Lagers 30' (Fig. 4) zur Antriebs- und Lagerwelle 48 der Ablegewalze 8, 9 angeordnet und mit Hilfe eines Bolzens 49 drehfest am Maschinengestellt 15 gesichert (Fig. 3). Zur Lagerung der Antriebs- und Lagerwelle 48 im Maschinengestell 15 dienen Kugellager 50 und zum Antrieb ist ein Zahnrad 51 vorgesehen, wie ebenfalls aus Figur 3 hervorgeht.The suction
Das Greifelement 18 bzw. sein Schwenk- und Steuerhebel 36 ist von einer Feder 52 beaufschlagt, die das Greifelement 18 in die Schließstellung drückt. Zum Öffnen des Greifelementes 18 dient die Steuerkurve 38, welche über die Führungsrolle 37 und den Steuerhebel 36 das Greifelement 18 mit seinem Klemmstück 32 in die Öffnungslage verschwenkt, wenn sich das Greifelement 18 der einen Ablegewalze 8 bzw. 9 und die Knick- und Falzschneide 16 der jeweils anderen Ablegewalze 8 bzw. 9 im Bereich des Walzenspaltes 57 bzw. seiner engsten Stelle befinden, wie dies in Figur 2 dargestellt ist. Nach dem Öffnen des Walzenspaltes 17 muß dieser sehr schnell wieder geschlossen werden. Der das Öffnen bewirkende Teil der Steuerkurve 38 erstreckt sich nur über ein relativ kurzes Bogenstück im Bereich des Walzenspaltes 57 und der seitlichen, oberen Kante des Stapels 2, wie dies auch in Figur 2 dargestellt ist.The gripping
Die Lagerung der Ablegewalze 8, 9 im Maschinengestell 15 erfolgt gemäß Figur 3 weitgehend symmetrisch. Gleiches gilt auch für die Saugluftsteuerung, so daß zweckmäßigerweise je ein Saugluft-Steuerventil 30 axial an jedem Ende der Ablegewalze 8, 9 angeordnet ist (Fig. 3).The storage of the laying
Die Darstellung in Figur 3 ist schließlich der besseren Übersicht wegen etwas vereinfacht, da z.B. Steuerhebel 36 und Führungsrollen 37 nicht an allen Schwenkachsen 35 dargestellt sind, obwohl ihre Anordnung dort jeweils zwingend notwendig ist.The representation in Figure 3 is finally somewhat simplified for the sake of clarity, since
An ihrem Umfang 25 weisen die beiden Ablegewalzen 8, 9 jeweils axial nebeneinander mehrere Greifelement 18 und Knick- und Falzschneiden 16 auf. Dazwischen befinden sich Rillen bzw. Nuten 53, so daß die Ablegewalzen 8, 9 im Ergebnis leicht kammförmig sind. Der Greifspalt 17 erstreckt sich radial. Gleiches gilt für die Klemmflächen 33 und die Anlageflächen 34 an den Ablegewalzen 8, 9. Die Knick- und Falzschneiden 16, 20 und 21 sind mittels elastischer Halterungen 60 in den Ablegewalzen 8, 9 gelagert.On their
Bei dem in den Figuren 1 und 2 dargestellten Ausführungsbeispiel wird jeder Ablegewalze 8 bzw. 9 jeweils eine durch Trennschnitte vorbereitete Materialbahn zugeführt bzw. es werden Einzelblätter 3, 3a zugeführt. Hierbei ist in beiden Ablegewalzen 8, 9 hinter den Knick- und Falzschneiden 16, 20, 21 jeweils ein Saugelement 26 notwendig.In the exemplary embodiment shown in FIGS. 1 and 2, each laying
Gemäß dem in Figur 6 prinzipmäßig dargestellten Ausführungsbeispiel besteht aber auch die Möglichkeit, die beiden vorbereiteten Materialbahnen 6 und 7 bzw. ihre Einzelblätter vor Erreichen der Ablegewalzen 8, 9 gemeinsam auf eine Walze 14 zu führen und bereits hier eine doppellagige Bahn, bestehend aus Einzelblättern oder aus perforierten Materialbahnen zu bilden. Die so gewonnene, doppellagige Bahn wird bei dieser Ausführungsform nur von einer Ablegewalze 8 übernommen und dem Walzenspalt 57 zugeführt. Dafür muß diese Ablegewalze 8 mit Saugelementen 26 hinter den Knick- und Falzschneiden 16, 20, 21 ausgerüstet sein. Die andere Ablegewalze 9 benötigt in diesem Fall keine Saugelemente hinter ihren Knick- und Falzschneiden 16, 20 und 21.According to the exemplary embodiment shown in principle in FIG. 6, there is also the possibility of leading the two
Beide Ausführungsbeispiele arbeiten nach dem gleichen Verfahren. Dies besteht im Ergebnis darin, daß jeweils das eine Einzelblatt mit der Stelle des zu bildenden Falzes und jeweils zwei andere Einzelblätter mit ihren Enden an derselben Stelle unter seitlicher Führung aus einer ursprünglichen Bewegungsrichtung gedrückt und sodann dort unter Falzbildung fixiert werden, wobei jeweils die Enden des einen Einzelblattes im Falz des anderen Einzelblattes liegen und daß die Einzelblätter mechanisch und mit Saugluft fixiert werden.Both exemplary embodiments work according to the same method. The result of this is that one single sheet with the location of the fold to be formed and two other single sheets with their ends are pressed at the same point under lateral guidance from an original direction of movement and then fixed there with the formation of folds, the ends of the a single sheet lie in the fold of the other single sheet and that the single sheets are fixed mechanically and with suction air.
Claims (9)
- Device for manufacturing u-shaped or zig-zag shaped single sheets (3) or tissues, laid in a stack (2) in one another and overlapping, in particular from absorbent paper, with the aid of two sets of rollers (4, 5) for two material lines (6, 7), wherein two cooperating laying rollers for stack forming and for folding are arranged and driven in a machine frame (15), and on their periphery (25) are provided with at least one crease and fold cutter (16, 20, 21) and suction elements (24, 26) and wherein further for each material line (6, 7) at least one each of a blade roller (11) with a separating blade (12) as well as transport, traction or guide rollers (13 and 14) are provided, characterised in that each laying roller (8, 9) additionally is provided with at least one gripping element (18) movable relative to the laying roller, and that there are arranged at least a suction element (23) in the gripping element (18), and a gripping element (24) adjacent to the gripping element (18) as well as a suction element (26) adjacent to the crease and fold cutter (16, 20, 21) each on the periphery (25) of the laying roller (8, 9).
- Device according to claim 1, characterised in that the gripping element (18) is arranged in a recess (31) opening out into the periphery (25) of the laying roller (8, 9).
- Device according to claims 1 and 2, characterised in that the gripping element (18) is a pivotably mounted flap, which at its free end is provided with a gripping piece (32) with a gripping surface (33) and that the gripping surface (33) is additionally allocated a counter surface in the form of a contact surface (34) rigidly arranged on the laying roller (8, 9).
- Device according to one of the preceding claims, characterised in that the gripping element (18) is provided near to its gripping surface (33) with at least one suction element (23) located in the cover surface (40) of the laying roller (8, 9) in the form of a suction opening with an associated suction channel (27).
- Device according to one of the preceding claims, characterised in that at least one suction element (26) or a suction opening and an associated suction channel (29) are arranged in the direction of rotation of the laying roller (8, 9) directly behind the crease and fold cutter (16, 20, 21) and a suction element (24) or a suction opening and an associated suction channel (28) are arranged near to the recess (31) receiving the flap shaped gripping element (18), wherein the suction elements (24, 26) or suction openings are located in the cover surface (40) of the laying roller (8, 9).
- Device according to one of the preceding claims, characterised in that the gripping element (18) is arranged on a swivel axle (35) and that this is provided with a control lever (36) for controlling the swivelling movement, to which is allocated a stationarily arranged control curve (38) outside the laying roller (8, 9).
- Device according to one of the preceding claims, characterised in that the swivel axle (35) of the gripping element (18) is provided with a longitudinal bore (41), which is connected in an air conducting manner to the air suction channel (27).
- Device according to claim 1, characterised in that for each material line (6, 7) or for its single sheets (3), a set of rollers (4, 5) with a laying roller (8, 9 respectively) and at least one each of a blade, transport, traction and/or guide rollers (11, 13, 14) are provided and that the material lines (6, 7) or their single sheets (3) are brought together offset with respect to one another at the gap between the rollers (57) of the two laying rollers (8, 9).
- Device according to claim 1, characterised in that the material lines (6, 7) are each guided together from a blade roller (11) and at least one transport and/or traction roller (13) to a common guide roller (14), offset with respect to one another and then together are guided onto one of the two laying rollers (8) and taken up thereby.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE3923436A DE3923436A1 (en) | 1989-07-15 | 1989-07-15 | METHOD AND DEVICE FOR PRODUCING PAPER PACKS |
DE3923436 | 1989-07-15 |
Publications (2)
Publication Number | Publication Date |
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EP0408912A1 EP0408912A1 (en) | 1991-01-23 |
EP0408912B1 true EP0408912B1 (en) | 1994-08-24 |
Family
ID=6385109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP90111612A Expired - Lifetime EP0408912B1 (en) | 1989-07-15 | 1990-06-20 | Method and device for production of paperstacks |
Country Status (4)
Country | Link |
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US (1) | US5147273A (en) |
EP (1) | EP0408912B1 (en) |
JP (1) | JPH0346964A (en) |
DE (2) | DE3923436A1 (en) |
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US10449746B2 (en) | 2016-06-27 | 2019-10-22 | C. G. Bretting Manufacturing Co., Inc. | Web processing system with multiple folding arrangements fed by a single web handling arrangement |
CN106429603B (en) * | 2016-11-23 | 2017-10-10 | 江西欧克科技有限公司 | A kind of face tissue folding machine of replaceable specification |
IT201800002342A1 (en) * | 2018-02-02 | 2019-08-02 | Perini Fabio Spa | INTERLIFTING MACHINE WITH SEPARATORY FINGERS ADJACENT TO THE RESPECTIVE INTERFOLIATING ROLLS |
IT201900001579A1 (en) * | 2019-02-04 | 2020-08-04 | Mtc Macch Trasformazione Carta S R L | FOLDING UNIT, OR INTERFOLIATING, OF PAPER SHEETS FOR A PAPER TRANSFORMATION MACHINE |
CN111591824B (en) * | 2020-05-14 | 2023-04-21 | 杨传萌 | Paper folding machine for folding a web of paper |
CN111924628A (en) * | 2020-07-15 | 2020-11-13 | 佛山市南海铭阳机械制造有限公司 | Folding stick of drawing type cotton soft towel machine |
CN114455380B (en) * | 2022-02-17 | 2024-03-26 | 杭州临安华晟日用品有限公司 | Folding and slitting device for non-woven fabrics and paper products |
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DE636666C (en) * | 1934-09-29 | 1936-10-14 | August Koenig Dr Ing | Combined cylinder pre-folding and zigzag folding devices for producing alternately folded form strips or the like from paper webs |
US2092952A (en) * | 1934-11-26 | 1937-09-14 | Samuel J Campbell | Paper interfolding machine |
US2872186A (en) * | 1956-07-10 | 1959-02-03 | Levey Fred K H Co Inc | Folder for printing presses |
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US3490762A (en) * | 1967-09-07 | 1970-01-20 | Paper Converting Machine Co | Web-lapping machine |
CH483921A (en) * | 1968-04-17 | 1970-01-15 | Bay Otto | Machine for folding foil material in zigzag breaks |
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AT330561B (en) * | 1973-08-03 | 1976-07-12 | Bunzl & Biach Ag | METHOD AND APPARATUS FOR MANUFACTURING A STACKING PACK OF PAPER TOWELS FOLDED INTO A ZIG-ZAG |
DE2533434A1 (en) * | 1975-07-25 | 1977-02-10 | Kawanoe Zoki K K | Rapid continuous web folding roller system - has suction openings on successive rollers laying web in zigzag |
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DD137795A3 (en) * | 1976-12-23 | 1979-09-26 | Klaus Hertrich | FOLDING CYLINDER FOR ROTATION FOLDER |
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DD153473A3 (en) * | 1979-12-27 | 1982-01-13 | Oskar Birke | DEVICE FOR CONTROLLING THE FOLDING FLAPS OF A FOLDING CYLINDER |
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DE3605085A1 (en) * | 1986-02-18 | 1987-08-20 | Hobema Maschf Hermann | DEVICE FOR MANUFACTURING AND STACKING ONE OR MULTIPLE CROSS-SIDED CROSS-SECTIONS MADE OF PAPER, CELLULAR, FIBER FABRIC OR THE LIKE. |
DE3708016A1 (en) * | 1987-03-12 | 1988-09-22 | Womako Masch Konstr | Device for the zig-zag folding of a material web |
US4765604A (en) * | 1987-04-17 | 1988-08-23 | C. G. Bretting Manufacturing Company | Resilient creaser |
US4824426A (en) * | 1987-05-11 | 1989-04-25 | Paper Converting Machine Company | Method and apparatus for interfolding webs |
US4917665A (en) * | 1987-06-16 | 1990-04-17 | C. G. Bretting Manufacturing Co. Inc. | Bedroll interfolding machinery improvement |
US4778441A (en) * | 1987-06-16 | 1988-10-18 | C.G. Bretting Manufacturing Co., Inc. | Interfolding machinery improvement |
-
1989
- 1989-07-15 DE DE3923436A patent/DE3923436A1/en not_active Withdrawn
-
1990
- 1990-06-20 DE DE59006888T patent/DE59006888D1/en not_active Expired - Fee Related
- 1990-06-20 EP EP90111612A patent/EP0408912B1/en not_active Expired - Lifetime
- 1990-07-06 JP JP2179388A patent/JPH0346964A/en active Pending
- 1990-07-10 US US07/551,439 patent/US5147273A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59006888D1 (en) | 1994-09-29 |
EP0408912A1 (en) | 1991-01-23 |
US5147273A (en) | 1992-09-15 |
DE3923436A1 (en) | 1991-01-24 |
JPH0346964A (en) | 1991-02-28 |
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