EP3569373B1 - Querschneidvorrichtung für eine wickelmaschine - Google Patents
Querschneidvorrichtung für eine wickelmaschine Download PDFInfo
- Publication number
- EP3569373B1 EP3569373B1 EP19171017.7A EP19171017A EP3569373B1 EP 3569373 B1 EP3569373 B1 EP 3569373B1 EP 19171017 A EP19171017 A EP 19171017A EP 3569373 B1 EP3569373 B1 EP 3569373B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flange
- cutting device
- knife
- transverse cutting
- press
- 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.)
- Active
Links
- 238000005520 cutting process Methods 0.000 title claims description 45
- 239000000463 material Substances 0.000 claims description 43
- 238000004804 winding Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 4
- 230000000284 resting effect Effects 0.000 claims 1
- 230000006378 damage Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/22—Safety devices specially adapted for cutting machines
- B26D7/24—Safety devices specially adapted for cutting machines arranged to disable the operating means for the cutting member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/10—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
- B26D1/105—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge 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
- 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
- B26D1/157—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 rotating about a movable axis
- B26D1/18—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 rotating about a movable axis mounted on a movable carriage
- B26D1/185—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 rotating about a movable axis mounted on a movable carriage 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
- 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
- B26D1/20—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 a fixed member
- B26D1/205—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 a fixed member 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
- B26D5/007—Control means comprising cameras, vision or image processing systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
-
- 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
-
- 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
- B65H19/265—Cutting-off the web running to the wound web roll using a cutting member moving linearly in a plane parallel to the surface of the web and along a direction crossing the web
-
- 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
- B65H2301/5151—Cutting handled material transversally to feeding direction
- B65H2301/51512—Cutting handled material transversally to feeding direction using a cutting member moving linearly in a plane parallel to the surface of the web and along a direction crossing the handled material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/19—Specific article or web
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/84—Paper-making machines
Definitions
- the present invention relates to a cross-cutting or cross-cutting device for a winding machine for winding web-shaped material, preferably for a fibrous or nonwoven web, with a cross-cutting or cross-cutting means for cutting or severing the material web after the winding process has ended.
- the cross-cutting device generally comprises a rotating knife which can be moved transversely to the web of material and which cuts it.
- a hold-down device interacts with the knife so that it cannot escape when the material web is cut. This ensures that the web of material is forced into the rotating knife and is thus cut.
- the material web can build up between the rotating knife and the hold-down so that the hold-down can be torn off due to the forces that occur, which can lead to further damage to the cross-cutting device.
- the JP 63-182898 discloses a pivotable cross-cutting device with a hold-down device fixedly installed on the cross-cutting device.
- the invention is therefore based on the object of improving the cross-cutting device in such a way that a build-up of the web of material and damage to the device are prevented.
- the invention includes the technical teaching that the cross-cutting device for a winding machine extends transversely to the transport direction of a material web and is designed to pivot at least partially into the plane of the material web from a rest position for the cutting process of the material web.
- the cross-cutting device comprises at least one knife which is arranged to be movable along a guide orthogonally to the transport direction of the material web.
- the knife works continuously with a hold-down device. If a material jam forms between the knife and the hold-down device, then, according to the invention, the hold-down device is designed to move from an operating position into an evasive position. This prevents the hold-down device from tearing off, which can lead to further damage to the cross-cutting device.
- the knife is designed as a rotary knife and the hold-down device is arranged to be pivotable about the pivot point of the knife. In the event of a material jam, the hold-down device evades the forces that occur due to the movement across the web due to the pivoting movement.
- the hold-down device is preferably arranged on a flange which interacts with a holder arranged parallel to the knife.
- the pivoting movement of the hold-down device is thus independent of the rotation of the knife, so that it can cut the material jam free even without the hold-down device, or the material web can be uncut over the knife is guided if the knife is blunt. A further build-up of the material is thus avoided.
- the holder has an arcuate groove into which a guide element of the flange engages. This limits the pivoting movement of the flange and thus of the hold-down device. Because the flange has a spring-loaded latching device that holds the flange with the hold-down device in the operating position, if there are fluctuations in the material thickness and material strength, the hold-down device can be prevented from pivoting into the evasive position too early.
- the spring loading of the latching device is preferably adjustable so that the pivoting movement can be adapted to different webs of material (thickness, material, etc.).
- the flange with the hold-down device can preferably be designed such that it can be pivoted manually or automatically from the evasive position into the operating position. Both the automatic pivoting and the manual pivoting from the evasive position into the operating position by means of a lever prevent injury to the operator on the knife blade.
- FIG. 1 shows an exemplary winding machine 1 with the cross-cutting device 10 according to the invention.
- the winding machine 1 is located with the inlet area 2 at the end of a system on which fibers are produced into a fleece or nonwoven product.
- a web of material not designated further, runs over the inlet area 2 into the winding machine 1 and is wound on a winding shaft 4 to form a roll, not shown.
- a winding shaft 4 is shown in the reserve position.
- Above a contact roller 5, which supports the winding process, a cross-cutting device 10 is shown, which is described in detail in the following figures.
- About the discharge area 3 is the finished winding after separation from the The remaining material web is transported to an interim or final storage facility.
- FIGS. 2 and 3 show in an enlarged view the cross-cutting device 10, which extends transversely over the contact roller 5 and can be pivoted into the tensioned material web by means of rotatably mounted flanges 11 around the axis of rotation of the contact roller 5 (arrow).
- the cross-cutting device 10 is in the waiting position until the roll has been completely wound. After a predetermined winding length, the cross-cutting device 10 swivels into the plane of the material web, the knife 13 being located laterally outside the material web and below the plane of the material web. With the cutting movement, the knife 13 moves laterally into the web and cuts it.
- a wedge-shaped hold-down device 14 is then located above the plane of the material web, so that it is located between the knife 13 and the hold-down device 14 and is severed by the rotation and transverse movement of the knife over the material web.
- a linear guide 12 is arranged within the cross-cutting device 10, along which the knife 13 is driven across the material web and cuts the material web.
- the knife 13 is arranged at an angle of 30 ° to 60 ° to the longitudinal axis of the contact roller 5, the size of the angle depending, among other things, on the winding speed in order to achieve a cut that is as perpendicular as possible to the winding direction.
- FIG 4 shows an enlarged view of a part of the cross-cutting device 10, in which the lining 15 of the front and rear has been removed.
- the knife 13 is designed as a rotary knife that is set in rotation by means of a motor or pneumatic drive 17.
- the knife 13 is rotatably mounted on a frame 16 on which the drive 17 is also arranged in a rotationally fixed manner.
- a holder 18 for the Downholder 14 is arranged which is at least partially pivotable about this holder 18.
- the hold-down device 14 is fastened to a flange 20, which is guided on a circular path with a guide element 21 (not shown here) in a groove 19 of the holder 18.
- the hold-down device 14 In the operating position, when the knife 13 cuts the material web, the hold-down device 14 is in this upper position, the flange 20 with the guide element 21 being in the upper stop of the groove 19.
- the hold-down device 14 is held in this position with the flange 20 by means of spring elements (not shown).
- the spring elements are designed to be adjustable in order to be able to vary the latching forces for this position. According to the prior art, a blunt knife 13 led to a material jam, as a result of which the hold-down device 14 often tore off.
- the hold-down device 14 with the flange 20 can be in a lower avoidance position ( Figure 5 ) are pivoted so that the cross cutting device 10 is not damaged.
- the force of the spring elements is overcome and the flange 20 with the hold-down device 14 moves along the circularly arranged groove 19 into the lower evasive position.
- the flange 20 with the hold-down device 14 can be manually moved into the operating position using the handle 23 and lever 22 ( Figure 4 ) can be pivoted.
- Handle 23 and lever 22 are not permanently mounted, but can be inserted into a hole in the flange in the evasive position.
- the groove 19 is designed in such a way that the hold-down device 14 with the flange 20 can be pivoted by approximately 90 ° out of engagement with the knife 13, which in this view takes place in a clockwise direction in the material running direction.
- the position of the hold-down device 14 or the flange 20 can preferably be monitored by means of a sensor, so that a signal is transmitted to the control of the winding machine 1 when both components are pivoted. This can trigger a warning signal for the operator or automatically shut down the winding machine.
- the flange 20 with the hold-down device 14 can also be reset automatically. For this purpose, it is provided that the knife 13 is stationary and the frame 16 has been moved along the guide 12 into the waiting position on the flange 11 outside the material web.
- Figure 6 shows a sectional view through the cross cutting device, in which the knife 13 is arranged parallel to the holder 18.
- the guide element 21 can be seen that guides the flange 20 along the groove.
- the hold-down device 14 can be seen, which forms a small vertical gap with the knife 13 in this illustration.
- An exemplary latching element 24 is formed on the flange 20, which can act as a spring-loaded pin with a conical or rounded tip with a recess 25. The latching element 24 can be pressed out of the recess 25 after a breakaway force predefined by the spring force, so that the flange 20 with the hold-down device 14 can pivot along the groove 19 into the evasive position.
- Alternative locking devices are of course possible within the scope of the invention.
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Replacement Of Web Rolls (AREA)
- Treatment Of Fiber Materials (AREA)
Description
- Die vorliegende Erfindung betrifft eine Quertrenn- oder Querschneidvorrichtung für eine Wickelmaschine zum Wickeln von bahnförmigen Material, vorzugsweise für eine Faserstoff- oder Nonwovensbahn, mit einem Quertrenn- oder Querschneidemittel zum Durchschneiden oder Durchtrennen der Materialbahn nach Beendigung des Wickelvorganges nach dem Oberbegriff von Anspruch 1.
- Bei der Herstellung einer Warenbahn aus textilen oder nichttextilen Fasern wird diese am Ende der Anlage auf einem Wickler mittels einer Wickelwelle aufgewickelt. Hat die Materialrolle einen definierten Durchmesser erreicht, wird die Warenbahn mittels eines Schlagmessers oder alternativ mittels einer Quertrenn- oder Querschneidevorrichtung geschnitten und die Materialrolle in eine Warte- oder Lagerposition überführt. Die Querschneidevorrichtung umfasst in der Regel ein rotierendes Messer, das quer zur Warenbahn verfahrbar ist und diese zerschneidet. Damit beim Zerschneiden der Warenbahn diese nicht ausweichen kann, wirkt ein Niederhalter mit dem Messer zusammen. Damit wird sichergestellt, dass die Warenbahn in das rotierende Messer zwangsweise eintaucht und damit geschnitten wird.
- Lässt die Schärfe des Messers nach, kann sich die Warenbahn zwischen dem rotierenden Messer und dem Niederhalter aufstauen, so dass aufgrund der auftretenden Kräfte in Folge der Niederhalter abgerissen werden kann, was zu einer weiteren Beschädigung der Querschneidevorrichtung führen kann.
- Die
JP 63-182898 - Der Erfindung liegt daher die Aufgabe zugrunde, die Querschneidevorrichtung so zu verbessern, dass ein Aufstauen der Warenbahn und eine Beschädigung der Vorrichtung verhindert wird.
- Die Lösung dieser Aufgabe erfolgt durch die Merkmale von Anspruch 1.
- Die Erfindung schließt die technische Lehre ein, dass die Querschneidvorrichtung für eine Wickelmaschine sich quer zur Transportrichtung einer Warenbahn erstreckt und ausgebildet ist, für den Schneidvorgang der Warenbahn von einer Ruheposition zumindest teilweise in die Ebene der Warenbahn hinein zu verschwenken. Dabei umfasst die Querschneidvorrichtung zumindest ein Messer, das entlang einer Führung orthogonal zur Transportrichtung der Warenbahn verfahrbar angeordnet ist. Das Messer wirkt beim Schneidvorgang mit einem Niederhalter kontinuierlich zusammen. Bildet sich zwischen dem Messer und dem Niederhalter ein Materialstau, dann ist erfindungsgemäß der Niederhalter ausgebildet, von einer Betriebsposition in eine Ausweichposition zu verfahren. Damit wird ein Abreißen des Niederhalters vermieden, was zu einer weiteren Beschädigung der Querschneidvorrichtung führen kann.
- Dabei ist das Messer als Rotationsmesser ausgebildet und der Niederhalter um den Drehpunkt des Messers verschwenkbar angeordnet. Bei einem Materialstau weicht der Niederhalter durch die Schwenkbewegung den auftretenden Kräften aufgrund der Verfahrbewegung quer zur Warenbahn aus.
- Vorzugsweise ist der Niederhalter an einem Flansch angeordnet, der mit einer parallel zum Messer angeordneten Halterung zusammenwirkt. Die Schwenkbewegung des Niederhalters ist damit unabhängig von der Rotation des Messers, so dass dieses den Materialstau auch ohne den Niederhalter freischneiden kann, bzw. die Warenbahn ungeschnitten über das Messer geführt wird, falls das Messer stumpf ist. Ein weiterer Aufstau des Materials wird damit vermieden.
- Die Halterung weist eine kreisbogenförmige Nut auf, in die ein Führungselement des Flansches eingreift. Damit wird die Schwenkbewegung des Flansches und damit des Niederhalters begrenzt. Dadurch, dass der Flansch eine federbelastete Rastvorrichtung aufweist, die den Flansch mit dem Niederhalter in Betriebsposition hält, kann bei Schwankungen in der Materialdicke und Materialfestigkeit ein zu frühes Verschwenken des Niederhalters in die Ausweichposition vermieden werden.
- Vorzugsweise ist die Federbelastung der Rastvorrichtung einstellbar, so dass eine Anpassung der Schwenkbewegung an unterschiedliche Warenbahnen (Dicke, Material, etc.) möglich ist.
- Erst bei einem Überschreiten der Federkräfte wird die Rastvorrichtung ausgelöst und der Flansch mit dem Niederhalter in die Ausweichposition verschwenkt.
- Vorzugsweise kann der Flansch mit dem Niederhalter manuell oder automatisch von der Ausweichposition in die Betriebsposition verschwenkbar ausgebildet sein. Sowohl die automatische Verschwenkung wie auch die manuelle Verschwenkung von der Ausweichposition in die Betriebsposition mittels eines Hebels verhindert eine Verletzung des Bedieners an der Messerklinge.
- Eine weitere Automatisierung kann mittels eines Sensors erreicht werden, der die Position des Niederhalters und/oder des Flansches auf einem Teilumfang der Halterung feststellt. Damit kann der Bediener gewarnt werden und/oder ggfs. die Maschine abgestellt werden.
- Weitere, die Erfindung verbessernde Maßnahmen werden nachstehend gemeinsam mit der Beschreibung eines bevorzugten Ausführungsbeispiels der Erfindung anhand der Figuren näher dargestellt. Es zeigen:
- Figur 1:
- eine beispielhafte Wickelmaschine mit einer Querschneidvorrichtung;
- Figur 2:
- eine erste Detailansicht der erfindungsgemäßen Querschneideinrichtung;
- Figur 3:
- eine vergrößerte Detailansicht von
Figur 2 ; - Figur 4:
- eine weitere Detailansicht der erfindungsgemäßen Querschneideinrichtung;
- Figur 5:
- eine weitere Detailansicht der erfindungsgemäßen Querschneideinrichtung;
- Figur 6:
- eine Detailansicht auf die Rastvorrichtung.
-
Figur 1 zeigt eine beispielhafte Wickelmaschine 1 mit der erfindungsgemäßen Querschneideinrichtung 10. Die Wickelmaschine 1 steht mit dem Einlaufbereich 2 am Ende einer Anlage, auf der Fasern zu einem Vlies oder Nonwovensprodukt hergestellt werden. Eine nicht weiter bezeichnete Warenbahn läuft über den Einlaufbereich 2 in die Wickelmaschine 1 und wird auf einer Wickelwelle 4 zu einem nicht dargestellten Wickel aufgewickelt. Eine Wickelwelle 4 ist in Reserveposition dargestellt. Oberhalb einer Kontaktwalze 5, die den Wickelvorgang unterstützt, ist eine Querschneidvorrichtung 10 dargestellt, die im Detail in den nachfolgenden Figuren beschrieben wird. Über den Abführbereich 3 wird der fertige Wickel nach der Trennung von der verbleibenden Warenbahn zu einem Zwischen- oder Endlager transportiert. - Die
Figuren 2 und3 zeigen in einer vergrößerten Ansicht die Querschneidvorrichtung 10, die sich quer über die Kontaktwalze 5 erstreckt und mittels drehbar gelagerter Flansche 11 um die Drehachse der Kontaktwalze 5 in die gespannte Warenbahn einschwenkbar (Pfeil) ist. In dieser Darstellung befindet sich die Querschneidvorrichtung 10 in Warteposition, bis der Wickel fertig aufgewickelt ist. Nach einer vorgegebenen Wickellänge verschwenkt die Querschneidvorrichtung 10 in die Ebene der Warenbahn, wobei sich das Messer 13 seitlich außerhalb der Warenbahn befindet und unter der Ebene der Warenbahn befindet. Mit der Schneidbewegung fährt das Messer 13 seitlich in die Warenbahn und zertrennt diese. Ein keilförmiger Niederhalter 14 befindet sich dann oberhalb der Ebene der Warenbahn, so dass sich diese zwischen dem Messer 13 und dem Niederhalter 14 befindet und durch die Rotation und Querbewegung des Messers über die Warenbahn zertrennt wird. Innerhalb der Querschneidvorrichtung 10 ist eine lineare Führung 12 angeordnet, entlang der das Messer 13 quer über die Warenbahn angetrieben geführt wird und die Warenbahn zerteilt. Das Messer 13 ist in einem Winkel von 30° bis 60° zur Längsachse der Kontaktwalze 5 angeordnet, wobei die Größe des Winkels unter anderem von der Wickelgeschwindigkeit abhängt, um einen möglichst rechtwinkligen Schnitt zur Wickelrichtung zu erzielen. -
Figur 4 zeigt eine vergrößerte Darstellung auf einen Teil der Querschneidevorrichtung 10, bei der die Verkleidung 15 der Vorder- und Rückseite entfernt wurde. Das Messer 13 ist als Rotationsmesser ausgebildet, das mittels motorischem oder pneumatischem Antrieb 17 in Rotation versetzt wird. Das Messer 13 ist drehbar an einem Gestell 16 gelagert, an dem auch der Antrieb 17 drehfest angeordnet ist. Zwischen dem Messer 13 und dem Antrieb 17 ist eine Halterung 18 für den Niederhalter 14 angeordnet, der zumindest teilweise um diese Halterung 18 verschwenkbar ist. Hierzu ist der Niederhalter 14 an einem Flansch 20 befestigt, der mit einem hier nicht erkennbaren Führungselement 21 in einer Nut 19 der Halterung 18 auf einer Kreisbahn geführt wird. In Betriebsposition, wenn das Messer 13 die Warenbahn zerschneidet, befindet sich der Niederhalter 14 in dieser oberen Position, wobei sich der Flansch 20 mit dem Führungselement 21 im oberen Anschlag der Nut 19 befindet. Der Niederhalter 14 wird mit dem Flansch 20 mittels nicht dargestellter Federelemente in dieser Position gehalten. Die Federelemente sind einstellbar ausgebildet, um die Rastkräfte für diese Position variieren zu können. Nach dem Stand der Technik führte ein stumpfes Messer 13 zu einem Materialstau, wodurch es oft zu einem Abreißen des Niederhalters 14 kam. - Erfindungsgemäß kann bei einem Materialstau der Niederhalter 14 mit dem Flansch 20 in eine untere Ausweichposition (
Figur 5 ) verschwenkt werden, so dass die Querschneidvorrichtung 10 nicht beschädigt wird. Dabei wird die Kraft der Federelemente überwunden und der Flansch 20 mit dem Niederhalter 14 verfährt entlang der kreisrund angeordneten Nut 19 in die untere Ausweichposition. - Nachdem das aufgestaute Material zwischen Rotationsmesser 13 und Niederhalter 14 entfernt wurde, kann der Flansch 20 mit dem Niederhalter 14 mittels Griff 23 und Hebel 22 manuell in die Betriebsposition (
Figur 4 ) verschwenkt werden. Griff 23 und Hebel 22 sind nicht fest montiert, sondern können in der Ausweichposition in eine Bohrung des Flansches eingesteckt werden. Die Nut 19 ist so ausgebildet, dass der Niederhalter 14 mit dem Flansch 20 um etwa 90° aus dem Eingriff mit dem Messer 13 verschwenkt werden kann, was in dieser Ansicht im Uhrzeigersinn in Materiallaufrichtung erfolgt. - Vorzugsweise kann die Position des Niederhalters 14 oder des Flansches 20 mittels Sensor überwacht werden, so dass bei einem Verschwenken beider Bauteile ein Signal an die Steuerung der Wickelmaschine 1 übertragen wird. Dies kann ein Warnsignal für den Bediener auslösen oder die Wickelmaschine automatisch außer Betrieb setzen. Statt der manuellen Rückstellung von der Ausweichposition in die Betriebsposition mittels Griff 23 und Hebel 22 kann der Flansch 20 mit dem Niederhalter 14 auch automatisch zurückgestellt werden. Dazu ist vorgesehen, dass das Messer 13 stillsteht und das Gestell 16 entlang der Führung 12 wieder in die Warteposition am Flansch 11 außerhalb der Warenbahn verfahren wurde.
-
Figur 6 zeigt eine Schnittdarstellung durch die Querschneidvorrichtung, bei der das Messer 13 parallel zur Halterung 18 angeordnet ist. In dieser Darstellung ist das Führungselement 21 zu erkennen, dass den Flansch 20 entlang der Nut führt. Oberhalb des Flansches 20 ist der Niederhalter 14 zu erkennen, der mit dem Messer 13 in dieser Darstellung einen kleinen vertikalen Spalt ausbildet. Am Flansch 20 ist ein beispielhaftes Rastelement 24 ausgebildet, das als federbelasteter Stift mit kegelförmiger oder gerundeter Spitze mit einer Vertiefung 25 zusammen wirken kann. Das Rastelement 24 kann nach einer durch die Federkraft vordefinierten Losbrechkraft aus der Vertiefung 25 gedrückt werden, so dass der Flansch 20 mit dem Niederhalter 14 entlang der Nut 19 in die Ausweichposition verschwenken kann. Alternative Rastvorrichtungen sind im Rahmen der Erfindung selbstverständlich möglich. -
- 1
- Wickelmaschine
- 2
- Einlaufbereich
- 3
- Abführbereich
- 4
- Wickelwelle
- 5
- Kontaktwalze
- 10
- Querschneidvorrichtung
- 11
- Flansch
- 12
- Führung
- 13
- Messer
- 14
- Niederhalter
- 15
- Verkleidung
- 16
- Gestell
- 17
- Antrieb
- 18
- Halterung
- 19
- Nut
- 20
- Flansch
- 21
- Führungselement
- 22
- Hebel
- 23
- Griff
- 24
- Rastelement
- 25
- Vertiefung
Claims (9)
- Querschneidvorrichtung (10) für eine Wickelmaschine (1), die sich quer zur Transportrichtung einer Warenbahn erstreckt und ausgebildet ist, für den Schneidvorgang der Warenbahn von einer Ruheposition zumindest teilweise in die Ebene der Warenbahn hinein zu verschwenken, umfassend zumindest ein Messer (13), das entlang einer Führung (12) orthogonal zur Transportrichtung der Warenbahn verfahrbar angeordnet ist, mit einem Niederhalter (14), der beim Schneidvorgang kontinuierlich mit dem Messer (13) zusammenwirkt, wobei der Niederhalter (14) ausgebildet ist, von einer Betriebsposition in eine Ausweichposition zu verfahren und wobei das Messer (13) als Rotationsmesser ausgebildet ist dadurch gekennzeichnet, dass der Niederhalter (14) um den Drehpunkt des Messers (13) verschwenkbar angeordnet ist.
- Querschneidvorrichtung (10) nach Anspruch 1, dadurch gekennzeichnet, dass die Querschneidvorrichtung (10) einen Flansch (20) aufweist, an dem der Niederhalter (14) angeordnet ist, wobei der Flansch (20) mit einer parallel zum Messer (13) angeordneten Halterung (18) zusammenwirkt.
- Querschneidvorrichtung (10) nach Anspruch 2, dadurch gekennzeichnet, dass die Halterung (18) eine kreisbogenförmige Nut (19) aufweist, in die ein Führungselement (21) des Flansches (20) eingreift.
- Querschneidvorrichtung (10) nach einem der Ansprüche 2 bis 3, dadurch gekennzeichnet, dass der Flansch (20) eine federbelastete Rastvorrichtung aufweist, die den Flansch (20) mit dem Niederhalter (14) in Betriebsposition hält.
- Querschneidvorrichtung (10) nach Anspruch 4, dadurch gekennzeichnet, dass die Federbelastung der Rastvorrichtung einstellbar ist
- Querschneidvorrichtung (10) nach einem der vorgenannten Ansprüche 4 oder 5, dadurch gekennzeichnet, dass die Rastvorrichtung ausgebildet ist, bei Überschreiten der Federkräfte die Verrastung zu lösen, so dass der Flansch (20) mit dem Niederhalter (14) in die Ausweichposition verschwenkbar ist.
- Querschneidvorrichtung (10) nach einem der vorgenannten Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der Flansch (20) mit dem Niederhalter (14) ausgebildet ist, manuell oder automatisch von der Ausweichposition in die Betriebsposition zu verschwenken.
- Querschneidvorrichtung (10) nach Anspruch 7, dadurch gekennzeichnet, dass die manuelle Verschwenkung des Flansches (20) mit dem Niederhalter (14) von der Ausweichposition in die Betriebsposition mittels eines Hebels (22) erfolgen kann, der am Flansch (20) montierbar ist.
- Querschneidvorrichtung (10) nach einem der vorgenannten Ansprüche 2 bis 3, dadurch gekennzeichnet, dass die Querschneidvorrichtung (10) einen Sensor aufweist, mit dem die Position des Niederhalters (14) und/oder des Flansches (20) auf einem Teilumfang der Halterung (18) feststellbar ist.
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CN (1) | CN110498274B (de) |
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US4553328A (en) * | 1983-09-19 | 1985-11-19 | Eastman Machine Company | Guided lifting apparatus |
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KR20150136542A (ko) * | 2013-05-03 | 2015-12-07 | 더 프록터 앤드 갬블 캄파니 | 섬유를 위한 커팅 장치 및 커팅 방법 |
US20140326115A1 (en) * | 2013-05-03 | 2014-11-06 | The Procter & Gamble Company | Methods for cutting materials |
CN204662149U (zh) * | 2015-03-25 | 2015-09-23 | 浙江龙旺纺织涂层有限公司 | 布料裁剪装置 |
EP3124188B1 (de) * | 2015-07-30 | 2017-11-29 | Magna Steyr Fuel Systems GesmbH | Schneidvorrichtung |
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