EP1594663A1 - Longitudinal cutting device for cutting out strips in a moving web of material - Google Patents

Longitudinal cutting device for cutting out strips in a moving web of material

Info

Publication number
EP1594663A1
EP1594663A1 EP04703092A EP04703092A EP1594663A1 EP 1594663 A1 EP1594663 A1 EP 1594663A1 EP 04703092 A EP04703092 A EP 04703092A EP 04703092 A EP04703092 A EP 04703092A EP 1594663 A1 EP1594663 A1 EP 1594663A1
Authority
EP
European Patent Office
Prior art keywords
knife
circular
circular knife
gear
cutting device
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
EP04703092A
Other languages
German (de)
French (fr)
Other versions
EP1594663B1 (en
Inventor
Ralf Dedeken
Armin Hutzenlaub
Dietmar Kunkel
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.)
Kampf GmbH and Co Maschinenfabrik
Original Assignee
Kampf GmbH and Co Maschinenfabrik
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
Priority claimed from DE2003106858 external-priority patent/DE10306858A1/en
Application filed by Kampf GmbH and Co Maschinenfabrik filed Critical Kampf GmbH and Co Maschinenfabrik
Publication of EP1594663A1 publication Critical patent/EP1594663A1/en
Application granted granted Critical
Publication of EP1594663B1 publication Critical patent/EP1594663B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • 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
    • B26D1/245—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 for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6587—Including plural, laterally spaced tools
    • Y10T83/6588—Tools mounted on common tool support
    • Y10T83/659—Tools axially shiftable on support
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6603—Tool shiftable relative to work-conveying means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7751—Means to separate elements of tool pair
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/7822—Tool pair axially shiftable
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/7847—Tool element axially shiftable
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7868—Tool element selectively operative

Definitions

  • the invention relates to a longitudinal cutting device for cutting running material webs, with at least one slide which is adjustably mounted on a guide extending transversely to the web running direction and which has a holder for a freely rotatable upper knife, which can be set in the direction of the lower knife, and a drive shaft, which extends over the entire width of the machine and over which the upper knife, in particular a circular knife, can be driven by means of a gear.
  • Longitudinal cutting devices for paper, plastic film and aluminum foil webs usually contain a plurality of circular knives arranged in pairs, with a pair of circular knives each cutting the web in the longitudinal direction for division into individual webs.
  • Longitudinal cutting devices of this type are components of winding machines which produce individual, narrower winding rolls from a wide material web. In order to be able to produce different winding roll formats, the pairs of circular knives can be positioned transversely to the web running direction.
  • a generic longitudinal cutting device is known from WO 99/47317.
  • the longitudinal cutting device described here consists of a driven upper knife and a freely rotatable lower knife.
  • circular knives are used as the upper knife and pot knives in particular as the lower knife.
  • Each pair of knives can be positioned transversely to the running direction of the web to be divided to set the required format width.
  • each upper knife can be adjusted in the direction of its axis of rotation against the associated lower knife, so that the two cutting edges can be aligned exactly relative to one another.
  • each upper knife can be raised to an inactive position if it is not required for slitting.
  • An electric motor serves as the rotary drive for the upper knife, with brushless DC motors in particular being used in a very compact design. The motor is located above the upper knife and drives the upper knife by means of a belt. By laying the drive motor over the circular knife, a narrower design of the longitudinal cutting device is possible.
  • US Pat. No. 3,974,727 discloses a cutting device with a rotary knife for cutting cardboard sheets.
  • the cutting edge of the cutting device consists of two separately driven circular knives that are driven by a gear and a drive shaft that extends over the entire width of the machine.
  • the slide for receiving the circular knife can be displaced transversely to the drive shaft.
  • the circular knives are pivotally received about the axis of the driving gear, the gears of the driving gear being in constant engagement.
  • the invention has for its object to improve a generic longitudinal cutting device according to Patent No. 101 47731 so that the circular knife driving gear can be decoupled from the gearbox and thus each circular knife can be switched off individually.
  • This object is achieved in that the angle between the connecting line of the center line of the center points of a gearwheel located on the drive shaft with a gearwheel engaged with it and the feed direction of the upper knife is between 60 ° and 120 °.
  • FIG. 1 shows the basic structure of a longitudinal cutting device with a gear drive for driving the circular knife
  • FIG. 2 shows a section through the drive shaft and the gear transmission according to FIG. 1 in section INI
  • FIG. 3 shows the basic structure of a longitudinal cutting device with a gear drive for driving the circular knife
  • Longitudinal cutting devices for paper, plastic film and aluminum foil webs usually contain a number of knives arranged in pairs, each pair of knives severing the web in the longitudinal direction for division into individual webs.
  • Longitudinal cutting devices of this type are components of winding machines which produce individual, narrower winding rolls from a wide material web.
  • the knife pairs can be positioned transversely to the web running direction.
  • the knife pairs usually consist of an upper knife, in particular a circular knife, which is freely rotatably mounted and driven by the material web, and a driven lower knife, in particular a pot knife or a grooved shaft provided with cutting edges.
  • the longitudinal cutting device 1 is shown with a gear transmission.
  • the longitudinal cutting device 1 consists of an upper knife 2, in particular a circular knife, a holder 3 for the circular knife 2, which is attached to a single knife holder 4.
  • the individual knife holder 4 is releasably attached to a carriage 5.
  • the carriage 5 is in turn mounted linearly displaceably on a support beam 6 by means of linear guide rails 7.
  • the drive shaft 8 for the circular knife 2 is rotatably mounted in a boom 9.
  • the boom 9 is in turn connected to the carriage 5.
  • the drive shaft 8 is circumferentially form-fitting, for transmitting a torque and axially displaceably guided through a bushing 11, the bushing 11 being fastened to the carriage 5 in a freely rotatable manner and a gearwheel 14 driving the circular knife 2 being fastened to the bushing.
  • the section shown in Figure 2 through the receptacle of the drive shaft 8 and through the bushing 11 and the bracket 9 serves to illustrate the drive of the circular knife 2.
  • the bushing 11 is positively but axially displaceably arranged on the drive shaft 8, the bushing 11 being rotationally fixed is connected to the outer ring of a bearing 12.
  • the inner ring of the bearing 2 is in turn fastened in the arm 9 so that the bushing 11 is rotatably mounted.
  • the gear 13 for driving the circular knife 2 is fixed.
  • the bushing 11 is axially displaceable over the longitudinal profile and / or the form-fitting elements 10 of the drive shaft 8.
  • Drive shaft 8 can be profiled, for example designed as a square shaft, or it is equipped with form-fitting elements 10, such as slot nuts, feather keys or ball guides, as are used, for example, in linear guides.
  • form-fitting elements 10 such as slot nuts, feather keys or ball guides, as are used, for example, in linear guides.
  • a combination of profiled drive shaft 8 and provided with form-fitting elements 10 is of course also conceivable.
  • the torques are on the drive shaft 8 to the bushing 11 and then to the gear
  • the material web 15 runs between the circular knife 2 and the lower knife 16, which perform a scissor cut against each other be employed.
  • the cutting edge of the circular knife 2 is moved against the cutting edge of the lower knife 16 via guide elements 17.
  • the guide elements 17 can move the circular knife approximately 20 to 30 mm radially in the direction of the lower knife.
  • a protective hood 18 is additionally arranged around the circular knife 2.
  • FIG. 3 A preferred embodiment of the invention is shown in FIG. 3.
  • the basic structure of the longitudinal cutting device corresponds to the embodiment described in FIG. 1.
  • the holder 20 for the circular knife 2 is in a modified form, it also serves to receive an intermediate gear 21.
  • the intermediate gear 21 is driven via the drive shaft 8 and the gear 22 fastened thereon via a bushing 11.
  • the drive shaft 8 is immediately on
  • Carriage 5 rotatably supported in a short boom 23.
  • an intermediate gearwheel 21 in the gear unit for driving the circular knife 2 and the position of the drive shaft 8 relative to the intermediate gearwheel 21 frees up the area 24 between the material web 15 and the short boom 23. In this area 24 further devices for grinding or cleaning the circular measurement sers 2 introduced or permanently installed. This makes the dismantling of the circular knife 2 easier.
  • coated material webs 15, such as, for example, adhesive films, are cut with the circular knife 2, it can lead to contamination on the
  • Circular knife 2 come.
  • a device that can be arranged in the area 24 is a circular disk 25 made of felt.
  • the circular disk 25 is used to clean the circular knife 2 and can be brought up to the circular knife.
  • the circular knife 2 and the intermediate gear 21 are moved via the guide elements 17 in the direction of the individual knife holder 4.
  • the gears 21, 22 remain continuously engaged.
  • the guide elements 17 move the holder 20 and the circular knife 2 and the intermediate gearwheel against the lower knife 16.
  • the rotary movement of the circular knife 2 is transmitted to the gearwheel 22, to the intermediate, via a torque generated on the drive shaft 8 - Gear 21 and then transferred to gear 14 on the circular knife.
  • the gearwheel 14 is fixedly connected to the circular knife 2 and rotatably mounted in the holder 20.
  • the circular knife 2 is first moved radially in the direction of the lower knife 16 and then axially in the direction of the movement of the carriage 5 against the lower knife 16 to form a shear system.
  • the driven circular knife 2 offers the advantage that a leading cut can be produced, which has a positive effect on the cutting quality of the material webs 15.
  • the circular disk 25 made of felt can now be brought up to the circular knife 2 and the circular knife 2 can be cleaned during the cutting.
  • the positive thing here is that idle times and set-up times are reduced.
  • the circular disk 25 can also be a non-engaged circular disk
  • a device for grinding the circular knife can also be inserted into the free area 24 or be permanently installed.
  • a housing 26 is arranged around the circular disk 25 to protect the circular disk and to collect dirt or abrasive particles.

Abstract

The invention relates to a longitudinal cutting device for cutting out strips (15) in a moving web of material. Said device comprises at least one carriage (5) which is mounted in such a manner that it can be displaced on a guide element (7) which extends transversally in relation to the direction of movement of the web of material. Said device also comprises a support (3, 20) with a freely rotatably mounted upper blade (2). Said device further comprises a drive shaft (8, 29, 39, 46) which extends over the entire width of the machine and which enables the upper blade (2), especially a circular blade, to be driven by means of a gear mechanism. Said upper blade (2) can be operated in a displaceable manner until a toothed wheel (14) which is connected to the circular blade and to the toothed wheel (13, 21) which drives the circular blade (2), is decoupled.

Description

B E S C H R E I B U N G DESCRIPTION
Längsschneideeinrichtung zum Schneiden von laufenden MaterialbahnenLongitudinal cutting device for cutting running material webs
Technisches GebietTechnical field
Die Erfindung betrifft eine Längsschneideeinrichtung zum Schneiden von laufenden Materialbahnen, mit mindestens einem Schlitten, der an einer sich quer zur Bahnlaufrichtung erstreckenden Führung verstellbar gelagert ist und der eine Halterung für ein frei drehbares Obermesser aufweist, welches in Richtung des Untermessers zustellbar ist und einer Antriebswelle, die sich über die gesamte Breite der Maschine erstreckt und über die das Obermesser, insbesondere ein Kreismesser, mittels eines Getriebes antreibbar ist.The invention relates to a longitudinal cutting device for cutting running material webs, with at least one slide which is adjustably mounted on a guide extending transversely to the web running direction and which has a holder for a freely rotatable upper knife, which can be set in the direction of the lower knife, and a drive shaft, which extends over the entire width of the machine and over which the upper knife, in particular a circular knife, can be driven by means of a gear.
Stand der TechnikState of the art
Längsschneideeinrichtungen für Papier, Kunststoffolien- und Aluminiumfolienbahnen enthalten üblicherweise mehrere paarweise angeordnete Kreismesser, wobei jeweils ein Kreismesserpaar die Bahn zur Aufteilung in Einzelbahnen in Längsrichtung durchtrennt. Derartige Längsschneideeinrichtungen sind Bestandteile von Wickelmaschinen, die aus einer breiten Materialbahn einzelne schmalere Wickelrollen herstellen. Um verschiedene Wickelrollenformate herstellen zu können, sind die Kreismesserpaare quer zur Bahnlaufrichtung positionierbar.Longitudinal cutting devices for paper, plastic film and aluminum foil webs usually contain a plurality of circular knives arranged in pairs, with a pair of circular knives each cutting the web in the longitudinal direction for division into individual webs. Longitudinal cutting devices of this type are components of winding machines which produce individual, narrower winding rolls from a wide material web. In order to be able to produce different winding roll formats, the pairs of circular knives can be positioned transversely to the web running direction.
Eine gattungsgemäße Längsschneideeinrichtung ist aus der WO 99/47317 bekannt. Die hierin beschriebene Längsschneideeinrichtung besteht aus einem angetriebenen Obermesser und einem frei drehbar gelagerten Untermesser. Als Obermesser werden insbesondere Kreismesser und als Untermesser insbesondere Topfmesser verwendet.A generic longitudinal cutting device is known from WO 99/47317. The longitudinal cutting device described here consists of a driven upper knife and a freely rotatable lower knife. In particular, circular knives are used as the upper knife and pot knives in particular as the lower knife.
Jedes Messerpaar ist zur Einstellung der erforderlichen Formatbreite quer zur Laufrichtung der zu teilenden Bahn positionierbar. Zusätzlich ist jedes Obermesser in Richtung seiner Drehachse gegen das zugeordnete Untermesser anstellbar, damit die beiden Schneidkanten exakt relativ zueinander ausgerichtet werden können. Weiterhin ist jedes Obermesser in eine inaktive Position anhebbar, falls es nicht zum Längsschneiden benötigt wird. Als Drehantrieb für das Obermesser dient ein Elektromotor, wobei insbesondere bürstenlose Gleichstrommotoren in sehr kompakter Bauweise verwendet werden. Der Motor ist über dem Obermesser angeordnet und treibt das Obermesser mittels eines Riemens an. Durch die Verlegung des Antriebsmotors über das Kreismesser ist eine schmalere Bauweise der Längsschneideeinrichtung möglich.Each pair of knives can be positioned transversely to the running direction of the web to be divided to set the required format width. In addition, each upper knife can be adjusted in the direction of its axis of rotation against the associated lower knife, so that the two cutting edges can be aligned exactly relative to one another. Furthermore, each upper knife can be raised to an inactive position if it is not required for slitting. An electric motor serves as the rotary drive for the upper knife, with brushless DC motors in particular being used in a very compact design. The motor is located above the upper knife and drives the upper knife by means of a belt. By laying the drive motor over the circular knife, a narrower design of the longitudinal cutting device is possible.
In der amerikanischen Patentschrift US 3,974,727 ist eine Schneidvorrichtung mit drehangetriebenem Messer zum Fasson schneiden von Kartonplatten offenbart. Die Schneide der Schneidvorrichtung besteht dabei aus zwei separat angetriebenen Kreismessern, die über ein Getriebe und eine sich über die gesamte Breite der Maschine erstreckende Antriebswelle angetrieben werden. Zur individuellen Anstellung der Schneidvorrichtung an die jeweilige Schneidposition ist der Schlitten zur Aufnahme der Kreismesser quer zur Antriebswelle verschiebbar. Zur Einstellung der Schnitttiefe sind die Kreismesser über die Achse des antreibenden Zahnrads schwenkbar aufgenommen, dabei befinden sich die Zahnräder des antreibenden Getriebes in ständigem Eingriff.US Pat. No. 3,974,727 discloses a cutting device with a rotary knife for cutting cardboard sheets. The cutting edge of the cutting device consists of two separately driven circular knives that are driven by a gear and a drive shaft that extends over the entire width of the machine. For the individual adjustment of the cutting device to the respective cutting position, the slide for receiving the circular knife can be displaced transversely to the drive shaft. To adjust the depth of cut, the circular knives are pivotally received about the axis of the driving gear, the gears of the driving gear being in constant engagement.
Darstellung der ErfindungPresentation of the invention
Der Erfindung liegt die Aufgabe zugrunde, eine gattungsgemäße Längsschneideeinrichtung nach Patent Nr. 101 47731 so zu verbessern, daß das Kreismesser antreibende Zahnrad vom Getriebe entkoppelbar und somit jedes Kreismesser individuell abschaltbar ist.The invention has for its object to improve a generic longitudinal cutting device according to Patent No. 101 47731 so that the circular knife driving gear can be decoupled from the gearbox and thus each circular knife can be switched off individually.
Diese Aufgabe wird dadurch gelöst, daß der Winkel zwischen der Verbindungslinie der Mittellinie der Mittelpunkte eines auf der Antriebswelle befindlichen Zahnrads mit einem mit diesem im Eingriff befindlichen Zahnrad und der Zustellrichtung des Obermessers zwischen 60° und 120° beträgt.This object is achieved in that the angle between the connecting line of the center line of the center points of a gearwheel located on the drive shaft with a gearwheel engaged with it and the feed direction of the upper knife is between 60 ° and 120 °.
Vorteilhafte Ausgestaltungsformen der Erfindung ergeben sich aus den Unteransprüchen.Advantageous embodiments of the invention result from the subclaims.
Durch die erfindungsgemäße Zustellbarkeit über einen Winkel von 60° bis 120° in Bezug auf die Verbindungslinie der Mittellinie der Mittelpunkte eines auf der Antriebswelle befindlichen Zahnrads mit einem mit diesem im Eingriff befindlichen Zahnrad und der Zustellrichtung des Obermessers ist es nun möglich, daß das Kreismesser antreibende Zahnrad vom Getriebe gelöst werden kann. Dies bietet den Vorteil, daß nur diejenigen Kreismesser die eine wirkliche Schneidarbeit leisten sich im Eingriff mit dem antreibenden Zahnrad befinden und auch nur diese Kreismesser angetrieben werden, die für die Schneidoperation benötigt werden. Die nicht benötigten Kreismesser und deren Lagerung wird geschont und der Verschleiß wird minimiert. Gleichzeitig benötigt der die Antriebswelle antreibende Motor eine geringere Leistung, wodurch die Wirtschaftlichkeit der Anlage erhöht wird.Due to the deliverability according to the invention over an angle of 60 ° to 120 ° with respect to the connecting line of the center line of the center points of a gearwheel located on the drive shaft with a gearwheel which is in engagement therewith the feed direction of the upper knife, it is now possible for the gear wheel driving the circular knife to be detached from the transmission. This offers the advantage that only those circular knives that perform a real cutting work are in engagement with the driving gear and only those circular knives that are required for the cutting operation are driven. The circular knives that are not required and their storage are protected and wear is minimized. At the same time, the motor driving the drive shaft requires less power, which increases the economic efficiency of the system.
Kurze Beschreibung der ZeichnungBrief description of the drawing
Nachfolgend soll die Erfindung anhand von Zeichnungen näher erläutert werden. Es zeigenThe invention will be explained in more detail below with reference to drawings. Show it
Figur 1 den prinzipiellen Aufbau einer Längsschneideeinrichtung mit einem Zahnradgetriebe zum Antrieb des Kreismessers,1 shows the basic structure of a longitudinal cutting device with a gear drive for driving the circular knife,
Figur 2 einen Schnitt durch die Antriebswelle und das Zahnradgetriebe gemäß Figur 1 im Schnitt INI,FIG. 2 shows a section through the drive shaft and the gear transmission according to FIG. 1 in section INI,
Figur 3 den prinzipiellen Aufbau einer Längsschneideeinrichtung mit einem Zahnradgetriebe zum Antrieb des Kreismessers,FIG. 3 shows the basic structure of a longitudinal cutting device with a gear drive for driving the circular knife,
Wege zur Ausführung der ErfindungWays of Carrying Out the Invention
Längsschneideeinrichtungen für Papier, Kunststoffolien- und Aluminiumfolienbahnen enthalten üblicherweise eine Reihe von paarweise angeordneten Messern, wobei jeweils ein Messerpaar die Bahn zur Aufteilung in Einzelbahnen in Längsrichtung durchtrennt. Derartige Längsschneideeinrichtungen sind Bestandteile von Wickelma- schinen, die aus einer breiten Materialbahn einzelne schmalere Wickelrollen herstellen. Um verschiedene Wickelrollenformate herstellen zu können, sind die Messerpaare quer zur Bahnlaufrichtung positionierbar. Die Messerpaare bestehen üblicherweise aus einem Obermesser, insbesondere einem Kreismesser, das frei drehbar gelagert und von der Materialbahn angetrieben ist und einem angetriebenen Untermesser, insbesondere einem Topfmesser oder einer mit Schneidkanten versehenen Nutenwelle. Durch das Antreiben des Obermessers mit einer höheren Drehgeschwindigkeit als der des Untermessers ist es möglich einen voreilenden Schnitt zu erzeugen.Longitudinal cutting devices for paper, plastic film and aluminum foil webs usually contain a number of knives arranged in pairs, each pair of knives severing the web in the longitudinal direction for division into individual webs. Longitudinal cutting devices of this type are components of winding machines which produce individual, narrower winding rolls from a wide material web. In order to be able to produce different winding roll formats, the knife pairs can be positioned transversely to the web running direction. The knife pairs usually consist of an upper knife, in particular a circular knife, which is freely rotatably mounted and driven by the material web, and a driven lower knife, in particular a pot knife or a grooved shaft provided with cutting edges. By driving the upper knife with a higher rotational speed than that of the lower knife, it is possible to produce a leading cut.
In Figur 1 ist die Längsschneideeinrichtung 1 mit einem Zahnradgetriebe dargestellt. Die Längsschneideeinrichtung 1 besteht aus einem Obermesser 2, insbesondere einem Kreismesser, einer Halterung 3 für das Kreismesser 2, die an einem Einzelmesserhalter 4 befestigt ist. Der Einzelmesserhalter 4 ist auf einem Schlitten 5 lösbar befestigt. Der Schlitten 5 wiederum ist auf einem Tragbalken 6 mittels linearer Führungsschienen 7 linear verschiebbar montiert. Die Antriebswelle 8 für das Kreismesser 2 ist in einem Ausleger 9 drehbar gelagert. Der Ausleger 9 wiederum ist mit dem Schlitten 5 verbunden. Die Antriebswelle 8 ist umfänglich formschlüssig, zur Übertragung eines Drehmomentes und axial verschiebbar durch eine Buchse 11 geführt, wobei die Buchse 11 frei drehbar am Schlitten 5 befestigt ist und an der Buchse ein das Kreismesser 2 antreibendes Zahnrad 14 befestigt ist.In Figure 1, the longitudinal cutting device 1 is shown with a gear transmission. The longitudinal cutting device 1 consists of an upper knife 2, in particular a circular knife, a holder 3 for the circular knife 2, which is attached to a single knife holder 4. The individual knife holder 4 is releasably attached to a carriage 5. The carriage 5 is in turn mounted linearly displaceably on a support beam 6 by means of linear guide rails 7. The drive shaft 8 for the circular knife 2 is rotatably mounted in a boom 9. The boom 9 is in turn connected to the carriage 5. The drive shaft 8 is circumferentially form-fitting, for transmitting a torque and axially displaceably guided through a bushing 11, the bushing 11 being fastened to the carriage 5 in a freely rotatable manner and a gearwheel 14 driving the circular knife 2 being fastened to the bushing.
Der in Figur 2 dargestellte Schnitt durch die Aufnahme der Antriebswelle 8 sowie durch die Buchse 11 und den Ausleger 9 dient zur Verdeutlichung des Antriebs des Kreismessers 2. Die Buchse 11 ist formschlüssig, aber axial verschieblich auf der Antriebswelle 8 angeordnet, wobei die Buchse 11 drehfest mit dem Außenring eines Lagers 12 verbunden ist. Der Innenring des Lagers 2 wiederum ist im Ausleger 9 befestigt, so daß die Buchse 11 drehbar gelagert ist. Auf der äußeren Oberfläche der Buchse 11 ist das Zahnrad 13 zum Antrieb des Kreismessers 2 befestigt.The section shown in Figure 2 through the receptacle of the drive shaft 8 and through the bushing 11 and the bracket 9 serves to illustrate the drive of the circular knife 2. The bushing 11 is positively but axially displaceably arranged on the drive shaft 8, the bushing 11 being rotationally fixed is connected to the outer ring of a bearing 12. The inner ring of the bearing 2 is in turn fastened in the arm 9 so that the bushing 11 is rotatably mounted. On the outer surface of the socket 11, the gear 13 for driving the circular knife 2 is fixed.
Zur Positionierung des Kreismessers 2 ist die Buchse 11 axial über das Längsprofil und/oder die formschlüssigen Elemente 10 der Antriebswelle 8 verschiebbar. DieTo position the circular knife 2, the bushing 11 is axially displaceable over the longitudinal profile and / or the form-fitting elements 10 of the drive shaft 8. The
Antriebswelle 8 kann dabei profiliert, zum Beispiel als Kantwelle ausgeführt sein oder sie ist mit formschlüssigen Elementen 10, wie zum Beispiel Nutensteinen, Passfedern oder Kugelführungen, wie sie zum Beispiel in Linearführungen eingesetzt werden, ausgestattet. Es ist natürlich auch eine Kombination aus profilierter und mit form- schlüssigen Elementen 10 versehener Antriebswelle 8 vorstellbar. Die Drehmomente werden über die Antriebswelle 8 an die Buchse 11 und anschließend an das ZahnradDrive shaft 8 can be profiled, for example designed as a square shaft, or it is equipped with form-fitting elements 10, such as slot nuts, feather keys or ball guides, as are used, for example, in linear guides. A combination of profiled drive shaft 8 and provided with form-fitting elements 10 is of course also conceivable. The torques are on the drive shaft 8 to the bushing 11 and then to the gear
13 übertragen. Mittels des Zahnrads 13 wird dann das Kreismesser 2 über ein Zahnrad13 transferred. By means of the gear 13, the circular knife 2 is then over a gear
14 angetrieben, wobei das Kreismesser 2 fest mit dem Zahnrad 14 verbunden ist.14 driven, wherein the circular knife 2 is firmly connected to the gear 14.
Wie in Figur 1 dargestellt, verläuft die Materialbahn 15 zwischen dem Kreismesser 2 und dem Untermesser 16, die zur Durchführung eines Scherenschnitts gegeneinander angestellt werden. Über Führungselemente 17 wird die Schneidkante des Kreismessers 2 gegen die Schneidkante des Untermessers 16 bewegt. Für die Zustellung des Kreismessers 2 können die Führungselemente 17 das Kreismesser ca. 20 bis 30 mm radial in Richtung des Untermessers verfahren. Beim radialen Zustellen des Kreismes- sers 2 gegen das Untermesser 16 in Richtung des Pfeils P verändert sich der Achsabstand der Antriebswelle 8 zum Zentrum 19 des Kreismessers 2. Der Abstandsfehler bewegt sich aber in so kleinen Bereichen, daß dies auf das Abwälzen des Zahnradpaares keinen negativen Einfluß hat.As shown in Figure 1, the material web 15 runs between the circular knife 2 and the lower knife 16, which perform a scissor cut against each other be employed. The cutting edge of the circular knife 2 is moved against the cutting edge of the lower knife 16 via guide elements 17. For the infeed of the circular knife 2, the guide elements 17 can move the circular knife approximately 20 to 30 mm radially in the direction of the lower knife. When the circular knife 2 is fed radially against the lower knife 16 in the direction of the arrow P, the center distance of the drive shaft 8 from the center 19 of the circular knife 2 changes Has influence.
Beim Herausfahren des Kreismessers 2 aus der Schneidposition, entgegen der Richtung des Pfeils P, werden das antreibende Zahnrad 13 und das von diesem angetriebenen Zahnrad 14 entkoppelt. Die Entkopplung und die Kopplung der Zahnräder 13, 14 findet dabei vornehmlich während des Stillstands der Antriebswelle 8 statt, so daß eine Beschädigung der Zahnräder 13, 14 ausgeschlossen ist. Das Verfahren des Kreismessers und des daran befestigten Zahnrads 14 ist ohne weitere Probleme möglich, weil das Zahnrad 14 mit dem Kreismesser 2 in der Halterung 3 frei drehbar gelagert ist.When the circular knife 2 moves out of the cutting position, counter to the direction of the arrow P, the driving gear 13 and the gear 14 driven by it are decoupled. The decoupling and coupling of the gears 13, 14 takes place primarily during the standstill of the drive shaft 8, so that damage to the gears 13, 14 is excluded. The movement of the circular knife and the gearwheel 14 attached to it is possible without further problems because the gearwheel 14 with the circular knife 2 is freely rotatably mounted in the holder 3.
Nach dem Koppeln und Zustellen des Kreismessers 2 gegen das Untermesser 16 bewegt sich das Kreismesser 2 zusammen mit dem Zahnrad 14 axial gegen dasAfter coupling and setting the circular knife 2 against the lower knife 16, the circular knife 2 moves together with the gear 14 axially against the
Untermesser 16, bis daß das Kreismesser 2 und das Untermesser 16 zusammen ein Schersystem bilden. Um das Kreismesser 2 ist zusätzlich eine Schutzhaube 18 angeordnet.Lower knife 16 until the circular knife 2 and the lower knife 16 together form a shaving system. A protective hood 18 is additionally arranged around the circular knife 2.
Eine bevorzugte Ausführungsform der Erfindung ist in Figur 3 wiedergegeben. Der prinzipielle Aufbau der Längsschneideeinrichtung entspricht der in Figur 1 beschriebenen Ausführungsform. Die Halterung 20 für das Kreismesser 2 liegt in einer veränderten Form vor, sie dient zusätzlich zur Aufnahme eines Zwischen-Zahnrads 21. Der Antrieb des Zwischen-Zahnrads 21 erfolgt über die Antriebswelle 8 und dem darauf über eine Buchse 11 befestigten Zahnrad 22. Die Antriebswelle 8 ist unmittelbar amA preferred embodiment of the invention is shown in FIG. 3. The basic structure of the longitudinal cutting device corresponds to the embodiment described in FIG. 1. The holder 20 for the circular knife 2 is in a modified form, it also serves to receive an intermediate gear 21. The intermediate gear 21 is driven via the drive shaft 8 and the gear 22 fastened thereon via a bushing 11. The drive shaft 8 is immediately on
Schlitten 5 in einem kurzen Ausleger 23 drehbar gelagert. .Carriage 5 rotatably supported in a short boom 23. ,
Durch die Aufnahme eines Zwischen-Zahnrads 21 in das Getriebe zum Antrieb des Kreismessers 2 und der Lage der Antriebswelle 8 zum Zwischen-Zahnrad 21 wird der Bereich 24 zwischen der Materialbahn 15 und dem kurzen Ausleger 23 frei. In diesen Bereich 24 können weitere Einrichtungen zum Schleifen oder Reinigen des Kreismes- sers 2 eingeführt oder fest montiert werden. Hierdurch wird die Demontage des Kreismessers 2 erleichtert.The inclusion of an intermediate gearwheel 21 in the gear unit for driving the circular knife 2 and the position of the drive shaft 8 relative to the intermediate gearwheel 21 frees up the area 24 between the material web 15 and the short boom 23. In this area 24 further devices for grinding or cleaning the circular measurement sers 2 introduced or permanently installed. This makes the dismantling of the circular knife 2 easier.
Werden mit dem Kreismesser 2 beispielsweise beschichtete Materialbahnen 15, wie beispielsweise Klebefolien, geschnitten, so kann es zu Verunreinigungen auf demIf, for example, coated material webs 15, such as, for example, adhesive films, are cut with the circular knife 2, it can lead to contamination on the
Kreismesser 2 kommen. Eine Einrichtung, die im Bereich 24 angeordnet werden kann, ist eine Kreisscheibe 25 aus Filz. Die Kreisscheibe 25 dient zur Reinigung des Kreismessers 2 und kann an das Kreismesser herangeführt werden.Circular knife 2 come. A device that can be arranged in the area 24 is a circular disk 25 made of felt. The circular disk 25 is used to clean the circular knife 2 and can be brought up to the circular knife.
Zum Einführen der Materialbahn 15 werden das Kreismesser 2 und das Zwischen- Zahnrad 21 über die Führungselemente 17 in Richtung des Einzelmesserhalters 4 bewegt. Dabei bleiben die Zahnräder 21 , 22 kontinuierlich im Eingriff. Nach dem Einführen der Materialbahn 15 verfahren die Führungselemente 17 die Halterung 20 und das Kreismesser 2 sowie das Zwischen-Zahnrad gegen das Untermesser 16. Die Drehbewegung des Kreismessers 2 wird dabei über ein an der Antriebswelle 8 erzeugtes Drehmoment an das Zahnrad 22, an das Zwischen-Zahnrad 21 und anschließend auf das Zahnrad 14 am Kreismesser übertragen. Das Zahnrad 14 ist fest mit dem Kreismesser 2 verbunden und in der Halterung 20 drehbar gelagert. Die Zustellbewegung des Kreismesser 2 erfolgt zuerst radial in Richtung des Untermes- sers 16 und anschließend axial in Richtung der Verfahrbewegung des Schlittens 5 gegen das Untermesser 16 zur Bildung eines Schersystems. Das angetriebene Kreismesser 2 bietet den Vorteil, daß ein voreilender Schnitt erzeugt werden kann, was sich positiv auf die Schnittqualität der Materialbahnen 15 auswirkt.To insert the material web 15, the circular knife 2 and the intermediate gear 21 are moved via the guide elements 17 in the direction of the individual knife holder 4. The gears 21, 22 remain continuously engaged. After the material web 15 has been introduced, the guide elements 17 move the holder 20 and the circular knife 2 and the intermediate gearwheel against the lower knife 16. The rotary movement of the circular knife 2 is transmitted to the gearwheel 22, to the intermediate, via a torque generated on the drive shaft 8 - Gear 21 and then transferred to gear 14 on the circular knife. The gearwheel 14 is fixedly connected to the circular knife 2 and rotatably mounted in the holder 20. The circular knife 2 is first moved radially in the direction of the lower knife 16 and then axially in the direction of the movement of the carriage 5 against the lower knife 16 to form a shear system. The driven circular knife 2 offers the advantage that a leading cut can be produced, which has a positive effect on the cutting quality of the material webs 15.
Während des Schneidens von beschichteten Materialbahnen 15, wie beispielsweise Klebefolien, bleiben Teile des Beschichtungswerkstoffs aus dem Scherbereich auf dem Kreismesser 2 haften. In den Bereich 24 kann nun die Kreisscheibe 25 aus Filz an das Kreismesser 2 herangefahren werden und das Kreismesser 2 während des Schneidens reinigen. Positiv hierbei ist, daß sich Neben- und Rüstzeiten verringern. Natürlich kann die Kreisscheibe 25 auch eine nicht im Eingriff befindliche KreisscheibeDuring the cutting of coated material webs 15, such as adhesive films, parts of the coating material from the shear area stick to the circular knife 2. In the area 24, the circular disk 25 made of felt can now be brought up to the circular knife 2 and the circular knife 2 can be cleaned during the cutting. The positive thing here is that idle times and set-up times are reduced. Of course, the circular disk 25 can also be a non-engaged circular disk
2 reinigen.2 clean.
Neben dem Reinigen der Kreisscheibe 2 kann in den freien Bereich 24 ebenfalls eine Einrichtung zum Schleifen des Kreismessers eingeführt oder fest montiert werden. Um die Kreisscheibe 25 ist ein Gehäuse 26 zum Schutz der Kreisscheibe und zum Auffangen von Verschmutzungen oder Schleifpartikeln angeordnet. In addition to cleaning the circular disk 2, a device for grinding the circular knife can also be inserted into the free area 24 or be permanently installed. A housing 26 is arranged around the circular disk 25 to protect the circular disk and to collect dirt or abrasive particles.

Claims

P A T E N T A N S P R Ü C H E PATENT CLAIMS
1.1.
Längsschneideeinrichtung nach Patent Nr. 101 47 731 zum Schneiden von laufenden Materialbahnen (15), mit mindestens einem Schlitten (5), der an einer sich quer zur Bahnlaufrichtung erstreckenden Führung (7) verstellbar gelagert ist und der eine Halterung (3) mit einem frei drehbar gelagerten Obermesser (2) aufweist, welches in Richtung des Untermessers (16) zustellbar ist und einer Antriebswelle (8), die sich über die gesamte Breite der Maschine erstreckt und über die das Obermesser (2), insbesondere ein Kreismesser, • mittels eines Getriebes antreibbar ist, dadurch gekennzeichnet, daß der Winkel zwischen der Verbindungslinie der Mittelpunkte eines auf der Antriebswelle befindlichen Zahnrads (13) mit einem mit diesem im Eingriff befindlichen Zahnrad (14, 21) und der Zustellrichtung des Obermessers (2) zwischen 60° und 120° beträgt.Longitudinal cutting device according to Patent No. 101 47 731 for cutting running material webs (15), with at least one slide (5) which is adjustably mounted on a guide (7) extending transversely to the web running direction and which has a holder (3) with a free one Has rotatably mounted upper knife (2) which can be set in the direction of the lower knife (16) and a drive shaft (8) which extends over the entire width of the machine and via which the upper knife (2), in particular a circular knife, • by means of a Gearbox can be driven, characterized in that the angle between the connecting line of the center points of a gearwheel (13) located on the drive shaft with a gearwheel (14, 21) meshing with it and the feed direction of the upper knife (2) is between 60 ° and 120 ° is.
2. Längsschneideeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß ein Verfahren des Kreismessers (2) mittels Führungselementen (17) und gegen die Richtung des Untermessers (16) bis zur Entkopplung eines mit dem Kreismesser verbundenen Zahnrads (14) und dem Kreismesser (2) antreibenden Zahnrad (13, 21) möglich ist.2. Longitudinal cutting device according to claim 1, characterized in that a method of the circular knife (2) by means of guide elements (17) and against the direction of the lower knife (16) until the decoupling of a gear connected to the circular knife (14) and the circular knife (2) driving gear (13, 21) is possible.
3.Third
Längsschneideeinrichtung nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die Antriebswelle (8) umfänglich formschlüssig, zur Übertragung eines Drehmomentes und axial verschiebbar durch eine Buchse (11) geführt ist, die frei drehbar am Schlitten (5) befestigt ist und an der ein das Kreismesser (2) antreibendes Zahnrad (14) befestigt ist.Longitudinal cutting device according to one of claims 1 and 2, characterized in that the drive shaft (8) is circumferentially positively, for the transmission of a torque and axially displaceable through a bushing (11) which is freely rotatably fastened to the carriage (5) and on which a gear (14) driving the circular knife (2) is fastened.
4.4th
Längsschneideeinrichtung nach einem der Ansprüche 1 bis 3, gekennzeichnet durch ein zwischen dem Zahnrad (22) und dem Kreismesser (2) angeordnetes Zwischen- Zahnrad (21), das an der Halterung (20) des Kreismessers (2) drehbar befestigt ist, wobei das Zwischen-Zahnrad (21) einerseits vom Zahnrad (22) antreibbar ist und andererseits das Kreismesser (2) antreibt.Longitudinal cutting device according to one of claims 1 to 3, characterized by an intermediate gear (21) which is arranged between the gear (22) and the circular knife (2) and is rotatably fastened to the holder (20) of the circular knife (2), the intermediate gear (21) on the one hand being drivable by the gear (22) and on the other hand driving the circular knife (2).
5.5th
Längsschneideeinrichtung nach Anspruch 4, gekennzeichnet durch eine Kreisscheibe (25) zum Reinigen des Kreismessers (2), die im Bereich (24) zwischen der Materialbahn (15) und der Antriebswelle (8) angeordnet ist. Longitudinal cutting device according to claim 4, characterized by a circular disc (25) for cleaning the circular knife (2), which is arranged in the region (24) between the material web (15) and the drive shaft (8).
EP04703092A 2003-02-19 2004-01-17 Longitudinal cutting device for cutting out strips in a moving web of material Expired - Fee Related EP1594663B1 (en)

Applications Claiming Priority (3)

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DE2003106858 DE10306858A1 (en) 2001-09-27 2003-02-19 Longitudinal cutting machine for cutting sheet of material, has holder attached to the retainer fastened to the carriage with an upper cutter turned towards a lower cutter via the drive shaft of a gear wheel
DE10306858 2003-02-19
PCT/EP2004/000334 WO2004073943A1 (en) 2003-02-19 2004-01-17 Longitudinal cutting device for cutting out strips in a moving web of material

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US20060162521A1 (en) 2006-07-27

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