EP0744367A2 - Apparatus for producing a perforated track in travelling web, e.g. a paper web - Google Patents

Apparatus for producing a perforated track in travelling web, e.g. a paper web Download PDF

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Publication number
EP0744367A2
EP0744367A2 EP96108160A EP96108160A EP0744367A2 EP 0744367 A2 EP0744367 A2 EP 0744367A2 EP 96108160 A EP96108160 A EP 96108160A EP 96108160 A EP96108160 A EP 96108160A EP 0744367 A2 EP0744367 A2 EP 0744367A2
Authority
EP
European Patent Office
Prior art keywords
web
perforation
paper web
comb
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96108160A
Other languages
German (de)
French (fr)
Other versions
EP0744367A3 (en
EP0744367B1 (en
Inventor
Walter Kaipf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Sulzer Papiermaschinen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0744367A2 publication Critical patent/EP0744367A2/en
Publication of EP0744367A3 publication Critical patent/EP0744367A3/en
Application granted granted Critical
Publication of EP0744367B1 publication Critical patent/EP0744367B1/en
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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
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • B65H19/267—Cutting-off the web running to the wound web roll by tearing or bursting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/20—Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/24—Perforating by needles or pins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • B26D2007/202—Rollers or cylinders being pivoted during operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/417—Handling or changing web rolls
    • B65H2301/4187—Relative movement of core or web roll in respect of mandrel
    • B65H2301/4189—Cutting
    • B65H2301/41894—Cutting knife moving on circular or acuate path, e.g. pivoting around winding roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5152—Cutting partially, e.g. perforating
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/329—Plural breakers
    • 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
    • Y10T83/4847—With cooperating stationary tool
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9314—Pointed perforators

Definitions

  • the invention relates to a device for producing a perforation track in a web, e.g. Paper web. Reference is made to the preamble of claim 1.
  • a preferred field of application of this device is winding machines, in which a web is wound into a roll.
  • the device creates a perforation track running transversely to the direction of travel of the web. The web is then cut along this perforation track.
  • the known devices for perforating a running paper web have considerable disadvantages.
  • the perforation device according to FIG. 2 in document (1) has a shaft with a comb, and also a counter roller with an elastic jacket. When the perforation device is not in operation, the perforation comb is in a position such that it does not come into contact with the paper web. If a perforation track is to be placed in the paper web, the shaft makes one revolution; thus the perforation comb is moved into and out of the paper web so that it leaves a perforation track.
  • This device has the disadvantage that its construction is very large. The control must work very precisely because the shaft and the counter roll must run synchronously with the paper web, otherwise premature web separation will take place.
  • Document (2) shows and describes a device for severing a paper web.
  • the machine e.g. winding machine
  • the complete cut is then made by increasing the web tension.
  • This device has the disadvantage that the winding machine has to be stopped for the purpose of weakening the web, which means that the reel changing process takes a relatively long time. There is also a risk of damaging the surface of the backup roller.
  • the invention has for its object to provide a device for perforating a paper web, which is simple in construction, does not require a high control effort, and with which a perforation track can be placed reliably and reproducibly across the web width.
  • the device according to the invention is simple in construction, requires no complex control and works absolutely reliably. This is especially true when the web is not particularly tight in the running direction, ie when the web tension is low. Thanks to the invention, it is possible to introduce the perforation track into the web at a precisely identifiable location, despite the machine continuing to run, with premature tearing of the web being avoided with certainty.
  • the invention is further developed by the features of at least one of the subclaims. It is important that the tips of the perforation comb can dip into the recesses of the web support body without touching it.
  • the length of the recesses (measured transversely to the direction of web travel) and thus their number is to be determined in such a way that the web does not yield when the perforation comb is immersed.
  • the length of the recesses depends on the sheet properties, in particular on the rigidity of the sheet. E.g. thin paper webs with low stiffness require a large number of recesses of short length, relatively thick and stiff paper webs, however, a smaller number of recesses with a correspondingly relatively long length (claim 5).
  • the width of the transverse ribs, which separate the recesses from one another, should be as small as possible, e.g. only 2 to 4 mm, so that the areas of the perforation comb free of tips could be kept as short as possible (claim 6).
  • Figure 1 shows a support roller 1, which has a perforated roller shell.
  • the back-up roller can, for example, be part of a winding machine for winding a paper web.
  • a paper web 2 is brought up to the support roller 1 from below via a guide roller 3. It runs through the perforation device 4 according to the invention and on a device 5 for applying a trace of glue.
  • the gluing device is irrelevant to the invention.
  • the device 4 comprises a shaft 4.1.
  • Their axis 4.2 runs parallel to the web 2, but transversely to the web running direction, that is, across the entire web width.
  • Wave 4.1 has a perforation comb 4.3.
  • the Shaft 4.1 is rotatably supported. It has a drive so that it can rotate in the direction of arrow 4.4.
  • a support body 4.5 is located on the side of the web 2 opposite the shaft 4.1. This extends like the shaft 4.1 across the web width. It is very important that the support body 4.5 has recesses 4.6 which are open towards the paper web 2. In other words, the support body 4.5 has in principle the shape of a channel that is open towards the web.
  • the trough can have transverse ribs 4.8, which subdivide the interior of the trough, so that the aforementioned recesses 4.6 are created.
  • the comb 4.3 on the one hand and the recesses 4.6 on the other hand are designed and arranged in such a way that the comb or its tips 4.7 can engage in the mentioned recesses 4.6 when the shaft 4.1 rotates and the comb reaches the position in which its tips 4.6 insert into paper web 2. There is no contact between comb 4.3 and support body 4.5.
  • the shaft 4.1, the perforation comb 4.3 fastened thereon and the support body 4.5 preferably extend over the entire web width. However, in individual cases it may be sufficient if these three elements only extend over a part of the web width.
  • the length L of the recesses 4.6 - as explained above - is made dependent on the type of paper.
  • the width B of the transverse ribs 4.8 is chosen to be as small as possible, e.g. only 2 to 4 mm.
  • the device works as follows:
  • the shaft 4.1 In the normal state, ie when the paper web 2 is wound into a paper roll, the shaft 4.1 is in the angular position shown in FIG. 1, in which the comb 4.3 faces away from the support body 4.5. Should one Perforation track are placed in paper web 2, the shaft 4.1 makes one revolution, so that the crest 4.3 with its tips 4.7 dips into the paper web 2 and emerges from it again as a result of the further rotation of the shaft 4.2.
  • the peripheral speed of the tips 4.7 need not necessarily be exactly the same as the speed of the web 2. A somewhat higher speed is also conceivable, as well as a somewhat lower one. In the former case, perforation slits are produced in the running direction of the paper web 2, which are relatively short, while in the second case they are relatively long.
  • the distance between the shaft 4.1 and the support body 4.5 is adjustable, as indicated schematically by double arrow 4.9.
  • the support roller 1 is assigned a web holder (6) which can be pressed against the support roller (to hold the new web start after the web has been severed).
  • FIG. 1 An important advantage of the invention over the embodiment according to document (1), FIG. 1, is as follows:
  • roller 8 equipped with a knife 9 must be moved off the paper web in order to be disengaged.
  • the shaft 4.1 is already at a corresponding distance from the paper web 2.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Paper (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Making Paper Articles (AREA)

Abstract

A pivot mounted shaft (4.1) has a perforating comb (4.3) at one point on its periphery, with a pivot axis (4.2) running across the direction of travel and positioned on one side of the paper web (2). The other side of the paper web has a stationary support (4.5) which has at least one recess (4.6) into which the points (4.7) of the perforating comb fit during rotation. The distance between the shaft and support can be adjusted. The support is in the form of a groove the interior of which is divided by at least one transverse ridge (4.8). The perforating comb has no point near each transverse ridge.

Description

Die Erfindung betrifft eine Vorrichtung zum Erzeugen einer Perforationsspur in einer Bahn, z.B. Papierbahn. Auf den Oberbegriff von Anspruch 1 wird verwiesen.The invention relates to a device for producing a perforation track in a web, e.g. Paper web. Reference is made to the preamble of claim 1.

Ein bevorzugtes Anwendungsgebiet dieser Vorrichtung sind Wickelmaschinen, worin eine Bahn zu einer Rolle aufgewickelt wird. Dabei wird - zum Durchführen eines Rollenwechsels - mittels der Vorrichtung eine quer zur Bahnumlaufrichtung verlaufende Perforationsspur in der Bahn erzeugt. Danach wird die Bahn entlang dieser Perforationsspur durchgetrennt.A preferred field of application of this device is winding machines, in which a web is wound into a roll. In order to carry out a roll change, the device creates a perforation track running transversely to the direction of travel of the web. The web is then cut along this perforation track.

Derartige Vorrichtungen sind bekannt aus:

  • (1) DE 36 11 895 C2
  • (2) DE 40 34 997 C1
Such devices are known from:
  • (1) DE 36 11 895 C2
  • (2) DE 40 34 997 C1

Die bekannten Vorrichtungen zum Perforieren einer laufenden Papierbahn haben erhebliche Nachteile. Die Perforationsvorrichtung gemäß Fig. 2 in Druckschrift (1) weist eine Welle mit einem Kamm auf, ferner eine Gegenwalze mit einem elastischen Mantel. Bei Nicht-Betrieb der Perforationseinrichtung befindet sich dabei der Perforationskamm in einer Position, daß er mit der Papierbahn nicht in Berührung gelangt. Soll eine Perforationsspur in der Papierbahn gelegt werden, so führt die Welle eine Umdrehung aus; damit wird der Perforationskamm in die Papierbahn hinein- und aus dieser wieder herausbewegt, so daß er eine Perforationsspur hinterläßt. Diese Vorrichtung hat den Nachteil, daß ihr Bauaufwand sehr groß ist. Die Steuerung muß sehr präzise arbeiten, weil die Welle und die Gegenwalze synchron mit der Papierbahn laufen müssen, da sonst eine vorzeitige Bahntrennung erfolgt.The known devices for perforating a running paper web have considerable disadvantages. The perforation device according to FIG. 2 in document (1) has a shaft with a comb, and also a counter roller with an elastic jacket. When the perforation device is not in operation, the perforation comb is in a position such that it does not come into contact with the paper web. If a perforation track is to be placed in the paper web, the shaft makes one revolution; thus the perforation comb is moved into and out of the paper web so that it leaves a perforation track. This device has the disadvantage that its construction is very large. The control must work very precisely because the shaft and the counter roll must run synchronously with the paper web, otherwise premature web separation will take place.

Bei der Ausführungsform von Figur 1 in Druckschrift (1) läuft die Welle in Gegenrichtung zur Papierbahn. Dies führt zu undefinierter Perforierung und zur Gefahr des Bahnabrisses während des Perforationsvorganges.In the embodiment of Figure 1 in document (1), the shaft runs in the opposite direction to the paper web. This leads to undefined perforation and the risk of web break during the perforation process.

Druckschrift (2) zeigt und beschreibt eine Vorrichtung zum Durchtrennen einer Papierbahn. Dabei wird während des Stillstands der Maschine (z.B. Wickelmaschine) gegen die auf einer Stützwalze aufliegende Bahn gedrückt, um die Bahn zu quetschen und damit zu schwächen. Die vollständige Durchtrennung erfolgt anschließend durch Erhöhung der Bahnspannung. Diese Vorrichtung hat den Nachteil, daß die Wickelmaschine zum Zwecke des Schwächens der Bahn stillgesetzt werden muß, wodurch der Rollenwechselvorgang relativ viel Zeit beansprucht. Außerdem besteht die Gefahr einer Beschädigung der Oberfläche der Stützwalze.Document (2) shows and describes a device for severing a paper web. The machine (e.g. winding machine) is pressed against the web resting on a support roller in order to squeeze the web and thereby weaken it. The complete cut is then made by increasing the web tension. This device has the disadvantage that the winding machine has to be stopped for the purpose of weakening the web, which means that the reel changing process takes a relatively long time. There is also a risk of damaging the surface of the backup roller.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Perforieren einer Papierbahn zu schaffen, die einfach im Aufbau ist, die keinen hohen Steuerungsaufwand verlangt, und mit der eine Perforationsspur über die Bahnbreite zuverlässig und reproduzierbar gelegt werden kann.The invention has for its object to provide a device for perforating a paper web, which is simple in construction, does not require a high control effort, and with which a perforation track can be placed reliably and reproducibly across the web width.

Diese Aufgabe wird durch die kennzeichnenden Merkmale von Anspruch 1 gelöst.This object is solved by the characterizing features of claim 1.

Die Vorrichtung gemäß der Erfindung ist einfach im Aufbau, bedarf keiner aufwendigen Steuerung und arbeitet absolut zuverlässig. Dies gilt besonders auch dann, wenn die Bahn in Laufrichtung nicht besonders stark gespannt ist, d.h. bei geringem Bahnzug. Dank der Erfindung gelingt es, die Perforationsspur - trotz weiterlaufender Maschine - an einer genau bestimmbaren Stelle in die Bahn einzubringen, wobei ein vorzeitiges Durchreißen der Bahn mit Sicherheit vermieden wird.The device according to the invention is simple in construction, requires no complex control and works absolutely reliably. This is especially true when the web is not particularly tight in the running direction, ie when the web tension is low. Thanks to the invention, it is possible to introduce the perforation track into the web at a precisely identifiable location, despite the machine continuing to run, with premature tearing of the web being avoided with certainty.

Besonders gute Ergebnisse sind erzielbar, wenn die Erfindung durch die Merkmale wenigstens einer der Unteransprüche weiter ausgestaltet wird. Wichtig ist, daß die Spitzen des Perforationskammes in die Ausnehmungen des Bahnstützkörpers eintauchen können ohne denselben zu berühren. Die Länge der Ausnehmungen (gemessen quer zur Bahnlaufrichtung) und somit deren Anzahl ist derart zu bestimmen, daß die Bahn beim Eintauchen des Perforationskammes nicht ausweicht. Die LÄnge der Ausnehmungen hängt ab von den Bahn-Eigenschaften, insbesondere von der Steifigkeit der Bahn. Z.B. dünne Papierbahnen mit geringer Steifigkeit erfordern eine große Anzahl von Ausnehmungen geringer Länge, relativ dicke und steife Papierbahnen dagegen eine geringere Anzahl von Ausnehmungen mit dementsprechend relativ großer Länge (Anspruch 5). Die Breite der Querrippen, welche die Ausnehmungen voneinander trennen, wählt man möglichst klein, z.B. nur 2 bis 4 mm, so daß die von Spitzen freien Bereiche des Perforationskammes möglichst kurz gehalten werden könnten (Anspruch 6).Particularly good results can be achieved if the invention is further developed by the features of at least one of the subclaims. It is important that the tips of the perforation comb can dip into the recesses of the web support body without touching it. The length of the recesses (measured transversely to the direction of web travel) and thus their number is to be determined in such a way that the web does not yield when the perforation comb is immersed. The length of the recesses depends on the sheet properties, in particular on the rigidity of the sheet. E.g. thin paper webs with low stiffness require a large number of recesses of short length, relatively thick and stiff paper webs, however, a smaller number of recesses with a correspondingly relatively long length (claim 5). The width of the transverse ribs, which separate the recesses from one another, should be as small as possible, e.g. only 2 to 4 mm, so that the areas of the perforation comb free of tips could be kept as short as possible (claim 6).

Die Erfindung ist anhand der Zeichnung näher erläutert.The invention is explained in more detail with reference to the drawing.

Figur 1 zeigt eine Stützwalze 1, die einen perforierten Walzenmantel aufweist. Die Stützwalze kann zum Beispiel Bestandteil einer Wickelmaschine zum Aufwickeln einer Papierbahn sein.Figure 1 shows a support roller 1, which has a perforated roller shell. The back-up roller can, for example, be part of a winding machine for winding a paper web.

Eine Papierbahn 2 wird im vorliegenden Falle von unten über eine Leitwalze 3 an die Stützwalze 1 herangeführt. Dabei läuft sie durch die erfindungsgemäße Perforationsvorrichtung 4 sowie an einer Vorrichtung 5 zum Auftragen einer Leimspur. Die Leimvorrichtung spielt für die Erfindung keine Rolle.In the present case, a paper web 2 is brought up to the support roller 1 from below via a guide roller 3. It runs through the perforation device 4 according to the invention and on a device 5 for applying a trace of glue. The gluing device is irrelevant to the invention.

Wie man auch aus Figur 2 im einzelnen erkennt, umfaßt die erfindungsgemäße Vorrichtung 4 eine Welle 4.1. Deren Achse 4.2 verläuft parallel zur Bahn 2, jedoch quer zur Bahnlaufrichtung, also quer über die gesamte Bahnbreite. Welle 4.1 weist einen Perforationskamm 4.3 auf. Die Welle 4.1 ist drehbar gelagert. Sie hat einen Antrieb, so daß sie in Richtung des Pfeiles 4.4 umlaufen kann.As can also be seen in detail from FIG. 2, the device 4 according to the invention comprises a shaft 4.1. Their axis 4.2 runs parallel to the web 2, but transversely to the web running direction, that is, across the entire web width. Wave 4.1 has a perforation comb 4.3. The Shaft 4.1 is rotatably supported. It has a drive so that it can rotate in the direction of arrow 4.4.

Auf der der Welle 4.1 gegenüberliegenden Seite der Bahn 2 befindet sich ein Stützkörper 4.5. Dieser erstreckt sich gleich der Welle 4.1 quer zur Bahnbreite. Ganz entscheidend ist, daß Stützkörper 4.5 Aussparungen 4.6 aufweist, die gegen die Papierbahn 2 hin offen sind. Mit anderen Worten: Der Stützkörper 4.5 hat im Prinzip die Form einer Rinne, die gegen die Bahn hin offen ist. Die Rinne kann Querrippen 4.8 aufweisen, die den Innenraum der Rinne unterteilen, so daß die genannten Aussparungen 4.6 entstehen. Der Kamm 4.3 einerseits und die Aussparungen 4.6 andererseits sind derart gestaltet und angeordnet, daß der Kamm bzw. dessen Spitzen 4.7 in die genannten Aussparungen 4.6 dann eingreifen können, wenn die Welle 4.1 umläuft, und der Kamm in jene Position gelangt, in der seine Spitzen 4.6 in die Papierbahn 2 einstechen. Dabei findet doch kein Kontakt zwischen Kamm 4.3 und Stützkörper 4.5 statt.A support body 4.5 is located on the side of the web 2 opposite the shaft 4.1. This extends like the shaft 4.1 across the web width. It is very important that the support body 4.5 has recesses 4.6 which are open towards the paper web 2. In other words, the support body 4.5 has in principle the shape of a channel that is open towards the web. The trough can have transverse ribs 4.8, which subdivide the interior of the trough, so that the aforementioned recesses 4.6 are created. The comb 4.3 on the one hand and the recesses 4.6 on the other hand are designed and arranged in such a way that the comb or its tips 4.7 can engage in the mentioned recesses 4.6 when the shaft 4.1 rotates and the comb reaches the position in which its tips 4.6 insert into paper web 2. There is no contact between comb 4.3 and support body 4.5.

Vorzugsweise erstrecken sich die Welle 4.1, der darauf befestigte Perforationskamm 4.3 und der Stützkörper 4.5 über die gesamte Bahnbreite hinweg. Jedochh kann es im Einzelfall genügen, wenn sich diese drei Elemente nur über einen Teil der Bahnbreite erstrecken.The shaft 4.1, the perforation comb 4.3 fastened thereon and the support body 4.5 preferably extend over the entire web width. However, in individual cases it may be sufficient if these three elements only extend over a part of the web width.

Die Länge L der Ausnehmungen 4.6 wird - wie oben erläutert - von der Papiersorte abhängig gemacht. Die Breite B der Querrippen 4.8 wird möglichst klein gewählt, z.B. nur 2 bis 4 mm.The length L of the recesses 4.6 - as explained above - is made dependent on the type of paper. The width B of the transverse ribs 4.8 is chosen to be as small as possible, e.g. only 2 to 4 mm.

Die Vorrichtung arbeitet wie folgt:The device works as follows:

Im Normalzustand, d.h. wenn die Papierbahn 2 zu einer Papierrolle aufgewickelt wird, befindet sich die Welle 4.1 in der in Figur 1 gezeigten Winkelposition, in der Kamm 4.3 dem Stützkörper 4.5 abgewandt ist. Soll eine Perforationsspur in Papierbahn 2 gelegt werden, so führt die Welle 4.1 eine Umdrehung aus, so daß Kamm 4.3 mit seinen Spitzen 4.7 in die Papierbahn 2 eintaucht und zufolge des weiteren Umlaufes der Welle 4.2 aus dieser wieder austaucht.In the normal state, ie when the paper web 2 is wound into a paper roll, the shaft 4.1 is in the angular position shown in FIG. 1, in which the comb 4.3 faces away from the support body 4.5. Should one Perforation track are placed in paper web 2, the shaft 4.1 makes one revolution, so that the crest 4.3 with its tips 4.7 dips into the paper web 2 and emerges from it again as a result of the further rotation of the shaft 4.2.

Die Umfangsgeschwindigkeit der Spitzen 4.7 muß dabei nicht unbedingt genau gleich der Geschwindigkeit der Bahn 2 sein. Es ist auch sowohl eine etwas höhere Geschwindigkeit denkbar, als auch eine etwas geringere. Im ersteren Falle werden Perforationsschlitze in Laufrichtung der Papierbahn 2 erzeugt, die relativ kurz sind, während sie im zweiten Falle relativ lang sind.The peripheral speed of the tips 4.7 need not necessarily be exactly the same as the speed of the web 2. A somewhat higher speed is also conceivable, as well as a somewhat lower one. In the former case, perforation slits are produced in the running direction of the paper web 2, which are relatively short, while in the second case they are relatively long.

Der Abstand zwischen der Welle 4.1 und dem Stützkörper 4.5 ist einstellbar, wie mittels Doppelpfeil 4.9 schematisch angedeutet.The distance between the shaft 4.1 and the support body 4.5 is adjustable, as indicated schematically by double arrow 4.9.

Der Stützwalze 1 ist ein Bahnhalter (6) zugeordnet, der (zum Festhalten des neuen Bahnanfanges nach der Durchtrennung der Bahn) an die Stützwalze andrückbar ist.The support roller 1 is assigned a web holder (6) which can be pressed against the support roller (to hold the new web start after the web has been severed).

Ein wichtiger Vorteil der Erfindung gegenüber der Ausführungsform gemäß Druckschrift (1), Figur 1, ist folgender:An important advantage of the invention over the embodiment according to document (1), FIG. 1, is as follows:

Bei der genannten Druckschrift muß die mit einem Messer 9 bestückte Walze 8 von der Papierbahn abgefahren werden, um außer Eingriff gebracht zu werden.In the cited document, the roller 8 equipped with a knife 9 must be moved off the paper web in order to be disengaged.

Bei der Erfindung ist dies nicht notwendig. Die Welle 4.1 hat bereits einen entsprechenden Abstand von der Papierbahn 2.This is not necessary in the invention. The shaft 4.1 is already at a corresponding distance from the paper web 2.

Die Erfindung ist anwendbar vorzugsweise (aber nicht ausschließlich) beim Rollenwechselverfahren gemäß Patentanmeldung 195 19 306.7 (PA 10169 = R 05355).The invention is applicable preferably (but not exclusively) in the roll change process according to patent application 195 19 306.7 (PA 10169 = R 05355).

Claims (6)

Vorrichtung zum Erzeugen einer Perforationsspur in einer laufenden Bahn (2), z.B. Papierbahn, wobei die Perforationsspur sich quer zur Bahnlaufrichtung erstreckt; 1.1 mit einer drehbar gelagerten Welle (4.1), die an einer Stelle ihres Umfanges einen Perforationskamm (4.3) aufweist, deren Drehachse (4.2) quer zur Bahnlaufrichtung verläuft, und die auf der einen Seite der Papierbahn (2) angeordnet ist; 1.2 mit einer Bahnstützvorrichtung (4.5), die auf der anderen Seite der Papierbahn angeordnet ist; gekennzeichnet durch die folgenden Merkmale: 1.3 die Bahnstützvorrichtung (4.5) ist ein stationärer Körper; 1.4 die Bahnstützvorrichtung (4.5) weist wenigstens eine Ausnehmung (4.6) auf, in welche die Spitzen (4.7) des Perforationskammes bei dessen Umlauf eintauchen. Device for producing a perforation track in a running web (2), for example a paper web, the perforation track extending transversely to the web running direction; 1.1 with a rotatably mounted shaft (4.1) which has a perforation comb (4.3) at one point on its circumference, the axis of rotation (4.2) of which runs transversely to the web running direction and which is arranged on one side of the paper web (2); 1.2 with a web support device (4.5) which is arranged on the other side of the paper web; characterized by the following features: 1.3 the web support device (4.5) is a stationary body; 1.4 the web support device (4.5) has at least one recess (4.6) into which the tips (4.7) of the perforation comb dip when it rotates. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der gegenseitige Abstand von Welle (4.1) und Stützkörper (4.5) einstellbar ist.Device according to claim 1, characterized in that the mutual distance between shaft (4.1) and support body (4.5) is adjustable. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sich die Welle (4.1), der darauf angeorfdnete Perforationskamm (4.3) und die Bahnstützvorrichtung (4.5) quer über die gesamte Breite der Bahn (2) erstrecken.Device according to claim 1 or 2, characterized in that the shaft (4.1), the perforation comb (4.3) arranged thereon and the web support device (4.5) extend across the entire width of the web (2). Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Stützkörper (4.5) nach Art einer Rinne geformt ist, deren Innenraum mittels wenigstens einer Querrippe (4.8) unterteil ist, wobei der Perforationskamm (4.3) im Bereich jeder Querrippe frei von Spitzen (4.7) ist.Device according to one of claims 1 to 3, characterized in that the support body (4.5) is shaped in the manner of a channel, the interior of which is subdivided by means of at least one transverse rib (4.8), the perforation comb (4.3) being free of peaks in the region of each transverse rib (4.7) is. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Länge (L) jeder Ausnehmung (4.6) (also der Abstand zwischen benachbarten Querrippen 4.8) ungefähr 20 bis 200 mm beträgt.Device according to claim 4, characterized in that the length (L) of each recess (4.6) (ie the distance between adjacent transverse ribs 4.8) is approximately 20 to 200 mm. Vorrichtung nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Breite (B) einer einzelnen Querrippe (4.8) kleiner als 10 mm, vorzugsweise kleiner als 5 mm ist.Apparatus according to claim 4 or 5, characterized in that the width (B) of an individual transverse rib (4.8) is less than 10 mm, preferably less than 5 mm.
EP96108160A 1995-05-26 1996-05-22 Apparatus for producing a perforated track in a travelling web, e.g. a paper web Expired - Lifetime EP0744367B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29508732U 1995-05-26
DE29508732U DE29508732U1 (en) 1995-05-26 1995-05-26 Device for perforating a running paper web

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EP0744367A2 true EP0744367A2 (en) 1996-11-27
EP0744367A3 EP0744367A3 (en) 1998-05-27
EP0744367B1 EP0744367B1 (en) 2001-04-11

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US (1) US5881622A (en)
EP (1) EP0744367B1 (en)
JP (1) JP2920822B2 (en)
KR (1) KR960040583A (en)
AT (1) ATE200467T1 (en)
BR (1) BR9601720A (en)
CA (1) CA2177313C (en)
DE (2) DE29508732U1 (en)
ES (1) ES2157365T3 (en)

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WO2015140466A1 (en) * 2014-03-21 2015-09-24 Spoolex Method and module for cutting a non-woven textile strip in a method for winding said strip about a rotatably driven receiving bobbin

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Also Published As

Publication number Publication date
CA2177313A1 (en) 1996-11-27
ATE200467T1 (en) 2001-04-15
JP2920822B2 (en) 1999-07-19
JPH09117897A (en) 1997-05-06
DE59606739D1 (en) 2001-05-17
BR9601720A (en) 1998-03-31
ES2157365T3 (en) 2001-08-16
CA2177313C (en) 2003-07-29
EP0744367A3 (en) 1998-05-27
US5881622A (en) 1999-03-16
EP0744367B1 (en) 2001-04-11
DE29508732U1 (en) 1995-09-21
KR960040583A (en) 1996-12-17

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