EP1361937B1 - Cleaning device for a longitudinal cutting device and method for cleaning said cutting device - Google Patents
Cleaning device for a longitudinal cutting device and method for cleaning said cutting device Download PDFInfo
- Publication number
- EP1361937B1 EP1361937B1 EP02703490A EP02703490A EP1361937B1 EP 1361937 B1 EP1361937 B1 EP 1361937B1 EP 02703490 A EP02703490 A EP 02703490A EP 02703490 A EP02703490 A EP 02703490A EP 1361937 B1 EP1361937 B1 EP 1361937B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- roll
- material web
- suction nozzle
- circumferential surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- 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
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1845—Means for removing cut-out material or waste by non mechanical means
- B26D7/1854—Means for removing cut-out material or waste by non mechanical means by air under pressure
-
- 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
- B26D7/18—Means for removing cut-out material or waste
- B26D7/1845—Means for removing cut-out material or waste by non mechanical means
- B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
-
- 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
Definitions
- the invention relates to a longitudinal cutting device for a material web and a Process for cleaning according to the preamble of claim 1, 2 or 8.
- Longitudinal cutting devices of this type come e.g. B. following one Rotary printing machine used to print one in the printing press Material web, in particular a paper web, into a plurality of partial webs disassemble.
- particles are in the form of fine chips or Dust free, some with the material web from the slitter can be dissipated, but can remain attached to the roller to another part where they can interfere with the further cutting process.
- WO 96/07490 describes the dedusting of a material web with the aid of a High-velocity gas stream. This document assumes that a Efficient dedusting is only possible if there is an area on the area to be dedusted such gas pressure is generated that the critical inversely proportional to the gas pressure Voltage less than the electrostatic voltage between the material web and the particles held on it. I.e. by generating a high pressure, the Discharge of the particles and thus the elimination of the electrostatic attraction promoted.
- JP 10-156796 AA shows a cutting device with a blowing nozzle and one Suction nozzle.
- DE 631 858 C provides a cutting device with a suction box and one Shovel.
- CH 613 881 A5 discloses a device for dedusting, in which one Inlet gusset from a web and a roller a blow nozzle and at the end of the looped region of the roller, a suction nozzle is arranged.
- DE 21 64 554 A shows a device for dust-free longitudinal cutting in progress Webs, a suction roller being provided under the circular knives.
- the Vacuum area essentially limited to the wrapping area.
- EP 0 183 863 A1 discloses a longitudinal cutting device (FIG. 7) with a blowing nozzle on one side of the web associated with a suction nozzle on the other side of the web is.
- EP 0 608 498 A1 describes a device for cleaning a roller, one of which Blowing and a suction nozzle the looping area of the web on the roller is arranged opposite.
- the invention has for its object a longitudinal cutting device for Cutting a material web into a plurality of partial webs and a method for Clean a slitter to create.
- the advantages which can be achieved with the invention are that particles which Cutting the material web free and on the outer surface of the roller Slitter stick, can be reliably removed before the Shell surface can come into contact with the material web again on its rotation.
- the invention can be used particularly advantageously in a longitudinal cutting device, whose roller has a groove cooperating with the circular knife.
- a longitudinal cutting device is a part of the material web in the cutting Groove pressed in, so that particles are released in the groove on the resulting edge can get stuck, and if not removed, over time enforce.
- the blowing nozzle is expediently aligned with the groove.
- the clear width of the blowing nozzle in the axial direction is preferably between 0.2 times and 2 times the width of the groove. So the blow nozzle can be sharp on the Deliver groove-oriented fluid jet, the cleaning effect of which is essentially in unfolds this critical area of the roller.
- the blowing nozzle is expediently oriented in such a way that it is located on the lateral surface of the rotating roller running predominantly against the direction of rotation of the roller Fluid flow generated. With such an orientation, the effective one Flow rate to which the particles in the groove are exposed is additive from the Path velocity of the particles and the velocity of the fluid flow together.
- suction nozzle provided on the lateral surface of the roller.
- Their clear expanse is preferably at least twice as large as that of the blow nozzle, so that it matches the the circumferential surface of the roller scattered and expanded fluid flow essentially can suction completely.
- the suction nozzle can refer to the direction of rotation of the Roller be arranged in front of the blow nozzle, so that against the direction of rotation to suck off the fluid flow spreading from the lateral surface of the roller.
- the blow nozzle at its mouth surrounded by the suction nozzle all around is independent, so that the suction nozzle can intercept the fluid flow of the blowing nozzle of the direction in which it spreads on the outer surface of the roller.
- the longitudinal cutting device can also be equipped with a collecting container for through the Suction nozzle suction particles are provided. This allows that of the particles to release the released air directly into the same room in which the Slitter is in use.
- the longitudinal cutting device shown in an axial section in FIG. 1 comprises an essentially cylindrical roller 01, on which a tightly guided material web 02, here Paper, is deflected by approx. 180 °.
- the roller 01 is not between two in FIG. 1 shown side plates rotatably and with a to the throughput speed the speed adapted to the material web 02.
- FIG. 2 shows a partial side view of the longitudinal cutting device from FIG. 1.
- a groove 04 into which a knife 06, z. B. a Circular knife 06, with its cutting edge 07 immersed.
- the circular knife 06 is on one mounted to the roller 01 parallel shaft 08, which in Fig. 2 only as one Dash line is indicated.
- the cutting edge 07 of the circular knife 06 has one planar and a frustoconical side surface.
- the planar side surface is at Cutting process in the range from 0 to 0.1 mm on a side wall 09 of the groove 04, see above that the material web 02 is cut in the area of this side wall 09.
- a cleaning device is located vertically below the roller 01 the groove 04 is arranged, which comprises a blowing nozzle 11 and a suction nozzle 12.
- the Blowing nozzle 11, suction nozzle 12 and roller 01 are on the same side of the material web 02 arranged.
- the material web 02 forms with the lateral surface 03 of the roller 01 in Direction of transport of the material web 02 seen behind the roller 01 a gap, d. H. an outlet gap or outlet gusset. In this outlet gap are blowing nozzle 11 and Suction nozzle 12 arranged.
- the longitudinal axes of both nozzles 11; 12 extend in the plane defined by the groove 04 of the roller 01.
- the suction nozzle 12 is in the view of the Fig.
- the blow nozzle 11 is aligned so that it has a fluid jet, preferably a compressed air jet, at an angle ⁇ of between 30 and 65 ° against the surface normal of the Shell surface 03 aligns.
- This choice of the angle ⁇ ensures that the Blown air flow on the outer surface 03 essentially against Direction of movement of the lateral surface 03 spreads out, so that adhering to the roller 01 Particles increased by the speed of rotation of the roller 01 Flow velocity are exposed.
- the orientation of the Blown air jet against the outer surface 03 and not tangent to it that at the point of impact of the blast air jet forms a dynamic pressure, which in turn locally increased flow velocities.
- the blow nozzle 11 is at an overpressure operated at approx. 0.4 bar.
- a suction pump (not shown in the figure) is connected to the suction nozzle 12, which provides the necessary vacuum. Furthermore, the suction nozzle 12 and the vacuum line connecting the suction pump or following the suction pump Collecting container for particles carried by the suction air flow, e.g. B. a filter bag or a collecting chamber of an electrostatic or cyclone separator. So the filtered suction air flow can flow directly back into the environment of the Longitudinal cutting device are delivered.
- the clear width I is that of tubular design here Blower nozzle 11 substantially larger than the width of the groove 04, so that of the Mouth of the blowing nozzle 11 at a distance of a few millimeters from the groove 04 most of the blown air jet discharges into the groove 04 and is guided in it, without essential parts of the blast air jet on both sides of the groove 04 on the Distribute lateral surface 03 in the axial direction.
- the suction nozzle 12 serves to blow this blown air flow from the roller 01 again vacuum before it hits the cut material web 02. That way uncontrolled striking movements of the material web 02 avoided.
- the free cross section the suction nozzle 12 is substantially larger than that of the blowing nozzle 11.
- the clear width L of the suction nozzle 12 is in particular in the axial direction more than twice the clear width I of the blow nozzle 11 to ensure that also parts of the blown air flow, which on the lateral surface 03 in the axial direction be scattered, essentially vacuumed and no uncontrolled Cause fluttering movements of the cut material web 02.
- the suction nozzle 12 is operated with a negative pressure of approx. 0.25 bar.
- FIG. 3 shows the arrangement of the blowing nozzle 11 and the suction nozzle 12 on the roller 01 in a section on an enlarged scale compared to FIG. 1.
- the main blowing direction the blowing nozzle 11, which in the case of a cylindrical blowing nozzle 11 has its longitudinal axis 14 corresponds to the outer surface 03 of the roller 01 at the point of impact P.
- the blown air stream spreads on the outer surface 03 of the roller 01 in essentially along a tangent 17 at the point of impact P to the mouth 18 of the Suction nozzle 12 out.
- the edge of the mouth 18 is according to the circumferential shape of the Roller 01 swung into a segment of a circle so that the distance between the mouth 18 and the lateral surface 03 is essentially the same everywhere.
- One of them is cut material web 02 facing wall 19 of the suction nozzle 12 as far up preferred that the tangent 17 intersects the wall 19. Therefore there is none straight path from point P to material web 02, on which the blown air flow Material web 02 could reach without braking.
- FIG. 4 shows a modification of that described with reference to FIGS. 1 to 3 Cleaning device in a view analogous to that of Fig. 3.
- the Mouth 18 of the suction nozzle 12 an even larger area of the circumference of the roller 01 3 than in the case shown in FIG. 3, and the outlet opening of the blowing nozzle 11 lies inside the suction nozzle 12.
- the suction nozzle 12 is capable of such Aspirate portions of the blown air flow, which from the point of impact P in the direction of rotation the roller 01, that is to the right in FIG. 4, spread out.
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Cutting Devices (AREA)
- Cleaning In General (AREA)
- Shearing Machines (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Die Erfindung betrifft eine Längsschneideinrichtung für eine Materialbahn und ein Verfahren zur Reinigung gemäß dem Oberbegriff des Anspruches 1, 2 oder 8.The invention relates to a longitudinal cutting device for a material web and a Process for cleaning according to the preamble of claim 1, 2 or 8.
Eine derartige Einrichtung, sowie ein derartiges Verfahren sind aus der DE- 631858C bekannt.Such a device and such a method are known from the DE-631858C known.
Längsschneideinrichtungen von diesem Typ kommen z. B. im Anschluss an eine Rotationsdruckmaschine zum Einsatz, um eine in der Druckmaschine bedruckte Materialbahn, insbesondere eine Papierbahn, in eine Mehrzahl von Teilbahnen zu zerlegen.Longitudinal cutting devices of this type come e.g. B. following one Rotary printing machine used to print one in the printing press Material web, in particular a paper web, into a plurality of partial webs disassemble.
Beim Zerschneiden der Materialbahn werden Partikel in Form von feinen Spänen oder Stäuben frei, die zu einem Teil mit der Materialbahn aus der Längsschneideinrichtung abgeführt werden, zu einem anderen Teil aber an der Walze haften bleiben können, wo sie sich störend auf den weiteren Schneidvorgang auswirken können.When cutting the material web, particles are in the form of fine chips or Dust free, some with the material web from the slitter can be dissipated, but can remain attached to the roller to another part where they can interfere with the further cutting process.
Die WO 96/07490 beschreibt die Entstaubung einer Materialbahn mit Hilfe eines Hochgeschwindigkeitsgasstromes. Bei dieser Schrift wird davon ausgegangen, dass eine effiziente Entstaubung nur dann möglich ist, wenn auf dem zu entstaubenden Bereich ein solcher Gasdruck erzeugt wird, dass die zum Gasdruck umgekehrt proportionale kritische Spannung kleiner als die elektrostatische Spannung zwischen der Materialbahn und den darauf gehaltenen Partikeln ist. D. h. durch Erzeugen eines hohen Drucks wird die Entladung der Partikel und damit die Aufhebung der elektrostatischen Anziehung gefördert.WO 96/07490 describes the dedusting of a material web with the aid of a High-velocity gas stream. This document assumes that a Efficient dedusting is only possible if there is an area on the area to be dedusted such gas pressure is generated that the critical inversely proportional to the gas pressure Voltage less than the electrostatic voltage between the material web and the particles held on it. I.e. by generating a high pressure, the Discharge of the particles and thus the elimination of the electrostatic attraction promoted.
Mit einer solchen Vorrichtung ist es zwar denkbar, eine Materialbahn vor oder nach dem Längsschneiden zu reinigen, sie eignet sich jedoch nicht zum Beseitigen von Partikeln, die an der Walze der Schneideinrichtung selbst hängen bleiben, und die deshalb mit jeder Umdrehung der Walze erneut die Kontaktzone zum Messer, z. B. Kreismesser durchlaufen und den Schneidvorgang stören können.With such a device it is conceivable to have a material web before or after To clean slitting, but it is not suitable for removing particles, that get stuck on the roller of the cutting device itself, and therefore with everyone Rotation of the roller again the contact zone to the knife, z. B. circular knife run through and can interfere with the cutting process.
Die JP 10-156796 AA zeigt eine Schneideinrichtung mit einer Blasdüse und einer Saugdüse.JP 10-156796 AA shows a cutting device with a blowing nozzle and one Suction nozzle.
Die DE 631 858 C stellt eine Schneideinrichtung mit einem Saugkasten und einer Schaufel dar.DE 631 858 C provides a cutting device with a suction box and one Shovel.
Die CH 613 881 A5 offenbart eine Vorrichtung zum Entstauben, bei der in einen Einlaufzwickel von einer Bahn und einer Walze eine Blasdüse und am Ende des umschlungenen Bereichs der Walze eine Saugdüse angeordnet ist.CH 613 881 A5 discloses a device for dedusting, in which one Inlet gusset from a web and a roller a blow nozzle and at the end of the looped region of the roller, a suction nozzle is arranged.
Die DE 21 64 554 A zeigt eine Vorrichtung zum staubfreien Längsschneiden laufender Bahnen, wobei unter den Kreismessern eine Saugwalze vorgesehen ist. Dabei ist der Unterdruckbereich im wesentlichen auf den Umschlingungsbereich begrenzt.DE 21 64 554 A shows a device for dust-free longitudinal cutting in progress Webs, a suction roller being provided under the circular knives. Here is the Vacuum area essentially limited to the wrapping area.
Die EP 0 183 863 A1 offenbart eine Längsschneideinrichtung (Fig. 7) mit einer Blasdüse auf einer Seite der Bahn, der eine Saugdüse auf der anderen Seite der Bahn zugeordnet ist.EP 0 183 863 A1 discloses a longitudinal cutting device (FIG. 7) with a blowing nozzle on one side of the web associated with a suction nozzle on the other side of the web is.
Die EP 0 608 498 A1 beschreibt eine Vorrichtung zur Reinigung einer Walze, wobei eine Blas- und eine Saugdüse dem Umschlingungsbereich der Bahn an der Walze gegenüberliegend angeordnet ist.EP 0 608 498 A1 describes a device for cleaning a roller, one of which Blowing and a suction nozzle the looping area of the web on the roller is arranged opposite.
Der Erfindung liegt die Aufgabe zugrunde, eine Längsschneideinrichtung zum Zerschneiden einer Materialbahn in eine Mehrzahl von Teilbahnen und ein Verfahren zum Reinigen einer Längsschneideinrichtung zu schaffen. The invention has for its object a longitudinal cutting device for Cutting a material web into a plurality of partial webs and a method for Clean a slitter to create.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1, 2 oder 8 gelöst.This object is achieved by the features of claim 1, 2 or 8 solved.
Die mit der Erfindung erzielbaren Vorteile bestehen darin, dass Partikel, die beim Zerschneiden der Materialbahn frei werden und an der Mantelfläche der Walze der Längsschneideinrichtung haften bleiben, zuverlässig beseitigt werden können, bevor die Mantelfläche auf ihrer Drehung erneut mit der Materialbahn in Kontakt treten kann.The advantages which can be achieved with the invention are that particles which Cutting the material web free and on the outer surface of the roller Slitter stick, can be reliably removed before the Shell surface can come into contact with the material web again on its rotation.
Die Erfindung ist besonders vorteilhaft einsetzbar bei einer Längsschneideinrichtung, deren Walze eine mit dem Kreismesser zusammenwirkende Nut aufweist. Bei einer solchen Längsschneideinrichtung wird beim Schneiden ein Teil der Materialbahn in die Nut hineingedrückt, so dass an dem entstehenden Rand frei werdende Partikel in der Nut stecken bleiben können, und wenn sie nicht entfernt werden, diese im Laufe der Zeit zusetzen.The invention can be used particularly advantageously in a longitudinal cutting device, whose roller has a groove cooperating with the circular knife. At a such longitudinal cutting device is a part of the material web in the cutting Groove pressed in, so that particles are released in the groove on the resulting edge can get stuck, and if not removed, over time enforce.
Um die Reinigungswirkung der Blasdüse auf diesen kritischen Bereich zu konzentrieren, ist die Blasdüse zweckmäßigerweise auf die Nut ausgerichtet.To concentrate the cleaning effect of the blow nozzle on this critical area, the blowing nozzle is expediently aligned with the groove.
Die lichte Weite der Blasdüse in axialer Richtung beträgt vorzugsweise zwischen dem 0,2-fachen und dem 2-fachen der Breite der Nut. So kann die Blasdüse einen scharf auf die Nut ausgerichteten Fluidstrahl liefern, dessen Reinigungswirkung sich im wesentlichen in diesem kritischen Bereich der Walze entfaltet.The clear width of the blowing nozzle in the axial direction is preferably between 0.2 times and 2 times the width of the groove. So the blow nozzle can be sharp on the Deliver groove-oriented fluid jet, the cleaning effect of which is essentially in unfolds this critical area of the roller.
Zweckmäßigerweise ist die Blasdüse so orientiert, dass sie an der Mantelfläche der rotierenden Walze einen überwiegend entgegen der Drehrichtung der Walze verlaufenden Fluidstrom erzeugt. Bei einer solchen Orientierung setzt sich die wirksame Strömungsgeschwindigkeit, der die Partikel in der Nut ausgesetzt sind, additiv aus der Bahngeschwindigkeit der Partikel und der Geschwindigkeit des Fluidstroms zusammen.The blowing nozzle is expediently oriented in such a way that it is located on the lateral surface of the rotating roller running predominantly against the direction of rotation of the roller Fluid flow generated. With such an orientation, the effective one Flow rate to which the particles in the groove are exposed is additive from the Path velocity of the particles and the velocity of the fluid flow together.
Um zu verhindern, dass der Fluidstrom auf die Materialbahn trifft, ist vorzugsweise eine auf die Mantelfläche der Walze ausgerichtete Saugdüse vorgesehen. Deren lichte Weite ist vorzugsweise wenigstens zweimal so groß wie die der Blasdüse, so dass sie den an der Mantelfläche der Walze gestreuten und aufgeweiteten Fluidstrom im wesentlichen vollständig absaugen kann.In order to prevent the fluid flow from hitting the material web, there is preferably one aligned suction nozzle provided on the lateral surface of the roller. Their clear expanse is preferably at least twice as large as that of the blow nozzle, so that it matches the the circumferential surface of the roller scattered and expanded fluid flow essentially can suction completely.
Einer ersten Ausgestaltung zufolge kann die Saugdüse bezogen auf die Drehrichtung der Walze vor der Blasdüse angeordnet sein, um so den sich entgegen der Drehrichtung an der Mantelfläche der Walze ausbreitenden Fluidstrom abzusaugen. Alternativ besteht die Möglichkeit, dass die Blasdüse an ihrer Mündung von der Saugdüse ringsum umgeben ist, so dass die Saugdüse den Fluidstrom der Blasdüse abfangen kann, unabhängig davon, in welcher Richtung er sich auf der Mantelfläche der Walze ausbreitet.According to a first embodiment, the suction nozzle can refer to the direction of rotation of the Roller be arranged in front of the blow nozzle, so that against the direction of rotation to suck off the fluid flow spreading from the lateral surface of the roller. Alternatively, there is Possibility that the blow nozzle at its mouth surrounded by the suction nozzle all around is independent, so that the suction nozzle can intercept the fluid flow of the blowing nozzle of the direction in which it spreads on the outer surface of the roller.
Um zu verhindern, dass der gegen die Mantelfläche geblasene Fluidstrom durch geradlinige Ausbreitung auf die Materialbahn treffen und diese auslenken kann, ist vorzugsweise vorgesehen, dass die Tangente der Mantelfläche der Walze am Schnittpunkt dieser Mantelfläche mit der Hauptblasrichtung der Blasdüse eine von der Blasdüse abgewandte Wand der Saugdüse schneidet.In order to prevent the fluid flow blown against the outer surface rectilinear spreading can hit the material web and deflect it preferably provided that the tangent of the lateral surface of the roller on Intersection of this lateral surface with the main blowing direction of the blowing nozzle one of the Blower nozzle cuts wall of the suction nozzle.
Die Längsschneideinrichtung kann femer mit einem Auffangbehälter für durch die Saugdüse abgesaugten Partikel versehen sein. Dies erlaubt es, die von den Partikeln befreite Luft direkt wieder in den gleichen Raum abzugeben, in dem die Längsschneideinrichtung im Einsatz ist.The longitudinal cutting device can also be equipped with a collecting container for through the Suction nozzle suction particles are provided. This allows that of the particles to release the released air directly into the same room in which the Slitter is in use.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher beschrieben.Embodiments of the invention are shown in the drawings and are in following described in more detail.
Es zeigen:
- Fig. 1
- eine Längsschneideinrichtung im Schnitt;
- Fig. 2
- eine Längsschneideinrichtung in einer partiellen Seitenansicht;
- Fig. 3
- ein vergrößertes Detail aus Fig. 1;
- Fig. 4
- einen Schnitt analog dem der Fig. 3 durch eine Längsschneideinrichtung gemäß einer zweiten Ausgestaltung der Erfindung.
- Fig. 1
- a slitter in section;
- Fig. 2
- a longitudinal cutting device in a partial side view;
- Fig. 3
- an enlarged detail of Fig. 1;
- Fig. 4
- a section analogous to that of FIG. 3 through a longitudinal cutting device according to a second embodiment of the invention.
Die in Fig. 1 in einem Axialschnitt gezeigte Längsschneideinrichtung umfasst eine im
wesentlichen zylindrische Walze 01, auf der eine straff geführte Materialbahn 02, hier aus
Papier, um ca. 180° umgelenkt wird. Die Walze 01 ist zwischen zwei in der Fig. 1 nicht
gezeigten Seitenplatten drehbar gelagert und mit einer an die Durchlaufgeschwindigkeit
der Materialbahn 02 angepassten Geschwindigkeit drehangetrieben.The longitudinal cutting device shown in an axial section in FIG. 1 comprises an
essentially
Fig. 2 zeigt eine partielle Seitenansicht der Längsschneideinrichtung aus Fig. 1. In der
Mantelfläche 03 der Walze 01 ist eine Nut 04 ausgebildet, in die ein Messer 06, z. B. ein
Kreismesser 06, mit seiner Schneidkante 07 eintaucht. Das Kreismesser 06 ist auf einer
zu der Walze 01 parallelen Welle 08 montiert, die in der Fig. 2 lediglich als eine
Strichpunktlinie angedeutet ist. Die Schneidkante 07 des Kreismessers 06 weist eine
planare und eine kegelstumpfförmige Seitenfläche auf. Die planare Seitenfläche liegt beim
Schneidvorgang im Bereich von 0 bis 0,1 mm an einer Seitenwand 09 der Nut 04 an, so
dass die Materialbahn 02 im Bereich dieser Seitenwand 09 geschnitten wird. Dabei
entstehende Späne sowie der Teil der Materialbahn 02, der über der Nut 04 liegt, werden
vom Kreismesser 06 in die Nut 04 hineingedrückt. Dabei können Partikel, die beim
Schneiden frei werden, in der Nut 04 hängen bleiben und diese bei lang andauerndem
Schneidbetrieb allmählich zusetzen, mit der Folge, dass der Abstand bzw. Kontakt
zwischen der Seitenwand der Schneidkante 07 und der Seitenwand 09 der Nut 04 gestört
wird oder das Kreismesser 06 sogar aus der Nut 04 heraus verdrängt wird.FIG. 2 shows a partial side view of the longitudinal cutting device from FIG. 1. In the
Um dies zu vermeiden, ist lotrecht unterhalb der Walze 01 eine Reinigungsvorrichtung für
die Nut 04 angeordnet, die eine Blasdüse 11 und eine Saugdüse 12 umfasst. Die
Blasdüse 11, Saugdüse 12 und Walze 01 sind auf der gleichen Seite der Materialbahn 02
angeordnet. Die Materialbahn 02 bildet mit der Mantelfläche 03 der Walze 01 in
Transportrichtung der Materialbahn 02 gesehen hinter der Walze 01 einen Spalt, d. h.
einen Auslaufspalt bzw. Auslaufzwickel. In diesem Auslaufspalt sind Blasdüse 11 und
Saugdüse 12 angeordnet. Die Längsachsen beider Düsen 11; 12 erstrecken sich in der
durch die Nut 04 der Walze 01 definierten Ebene. Die Saugdüse 12 ist in der Ansicht der
Fig. 2 transparent gezeichnet, um auch die Blasdüse 11 zeigen zu können. Die Blasdüse
11 ist so ausgerichtet, dass sie einen Fluidstrahl, vorzugsweise einen Pressluftstrahl,
unter einem Winkel α von zwischen 30 und 65° gegen die Oberflächennormale der
Mantelfläche 03 richtet. Durch diese Wahl des Winkels α wird erreicht, dass der
Blasluftstrom sich an der Mantelfläche 03 im wesentlichen entgegen der
Bewegungsrichtung der Mantelfläche 03 ausbreitet, so dass an der Walze 01 haftende
Partikel eine durch die Drehgeschwindigkeit der Walze 01 vergrößerten
Anströmgeschwindigkeit ausgesetzt sind. Andererseits wird durch die Ausrichtung des
Blasluftstrahls gegen die Mantelfläche 03 und nicht tangential zu dieser erreicht, dass sich
am Auftreffpunkt des Blasluftstrahls ein Staudruck bildet, der seinerseits wiederum lokal
erhöhte Strömungsgeschwindigkeiten bedingt. Die Blasdüse 11 wird mit einem Überdruck
von ca. 0,4 bar betrieben.In order to avoid this, a cleaning device is located vertically below the
An die Saugdüse 12 ist eine (in der Fig. nicht dargestellte) Saugpumpe angeschlossen,
die den betriebsnotwendigen Unterdruck liefert. Femer ist in einer die Saugdüse 12 und
die Saugpumpe verbindenden Unterdruckleitung oder im Anschluß an die Saugpumpe ein
Auffangbehälter für von dem Saugluftstrom mitgeführte Partikel, z. B. ein Filterbeutel oder
eine Auffangkammer eines elektrostatischen oder Zyklon-Abscheiders, angeordnet. So
kann der gefilterte Saugluftstrom direkt wieder in die Umgebung der
Längsschneideinrichtung abgegeben werden.A suction pump (not shown in the figure) is connected to the
Wie in Fig. 2 zu erkennen ist, ist die lichte Weite I der hier rohrförmig ausgebildeten
Blasdüse 11 im wesentlichen größer als die Breite der Nut 04, so dass der von der
Mündung der Blasdüse 11 in dem Abstand von wenigen Millimetern von der Nut 04
abgegebene Blasluftstrahl größtenteils in die Nut 04 eintritt und so in dieser geführt wird,
ohne dass sich wesentliche Teile des Blasluftstrahles beiderseits der Nut 04 auf der
Mantelfläche 03 in axialer Richtung verteilen.As can be seen in FIG. 2, the clear width I is that of tubular design here
Wie in Fig. 1 anhand der den Verlauf des Blasluftstroms darstellenden Pfeile 13 gut zu
erkennen ist, dient die Saugdüse 12 dazu, diesen Blasluftstrom von der Walze 01 wieder
abzusaugen, bevor er auf die geschnittene Materialbahn 02 trifft. Auf diese Weise werden
unkontrollierte Schlagbewegungen der Materialbahn 02 vermieden. Der freie Querschnitt
der Saugdüse 12 ist wesentlich größer als der der Blasdüse 11.As in FIG. 1, the
Wie Fig. 2 zeigt, ist insbesondere die lichte Weite L der Saugdüse 12 in axialer Richtung
mehr als zweimal so groß wie die lichte Weite I der Blasdüse 11, um zu gewährleisten,
dass auch Teile des Blasluftstroms, die an der Mantelfläche 03 in axialer Richtung
gestreut werden, im wesentlichen abgesaugt werden und keine unkontrollierten
Flatterbewegungen der geschnittenen Materialbahn 02 hervorrufen. Die Saugdüse 12
wird mit einem Unterdruck von ca. 0,25 bar betrieben.As shown in FIG. 2, the clear width L of the
Fig. 3 zeigt die Anordnung der Blasdüse 11 und der Saugdüse 12 an der Walze 01 in
einem Schnitt in einem gegenüber Fig. 1 vergrößerten Maßstab. Die Hauptblasrichtung
der Blasdüse 11, die im Falle einer zylindrischen Blasdüse 11 ihrer Längsachse 14
entspricht, schneidet die Mantelfläche 03 der Walze 01 am Auftreffpunkt P. Der Winkel α
der Längsachse 14 zur Oberflächennormalen 16 der Walze 01 am Auftreffpunkt P beträgt
ca. 45°. Der Blasluftstrom breitet sich an der Mantelfläche 03 der Walze 01 im
wesentlichen entlang einer Tangente 17 am Auftreffpunkt P zur Mündung 18 der
Saugdüse 12 hin aus. Der Rand der Mündung 18 ist entsprechend der Umfangsform der
Walze 01 kreissegmentförmig geschwungen, so dass der Abstand zwischen der Mündung
18 und der Mantelfläche 03 überall im wesentlichen gleich ist. Dabei ist eine der
geschnittenen Materialbahn 02 zugewandte Wand 19 der Saugdüse 12 so weit nach oben
vorgezogen, dass die Tangente 17 die Wand 19 schneidet. Es existiert daher kein
gradliniger Weg vom Punkt P zur Materialbahn 02, auf dem der Blasluftstrom die
Materialbahn 02 ungebremst erreichen könnte.3 shows the arrangement of the blowing
Fig. 4 zeigt eine Abwandlung der mit Bezug auf Figuren 1 bis 3 beschriebenen
Reinigungseinrichtung in einer Ansicht analog der der Fig. 3. Bei dieser Variante deckt die
Mündung 18 der Saugdüse 12 einen noch größeren Bereich des Umfangs der Walze 01
ab als im in Fig. 3 gezeigten Fall, und die Austrittsöffnung der Blasdüse 11 liegt innerhalb
der Saugdüse 12. Bei dieser Anordnung ist die Saugdüse 12 in der Lage, auch solche
Anteile des Blasluftstromes abzusaugen, die sich vom Auftreffpunkt P aus in Drehrichtung
der Walze 01, also nach rechts in der Fig. 4, ausbreiten. FIG. 4 shows a modification of that described with reference to FIGS. 1 to 3
Cleaning device in a view analogous to that of Fig. 3. In this variant, the
- 01.01.
- Walzeroller
- 02.02.
- Materialbahnweb
- 03.03.
- Mantelflächelateral surface
- 04.04th
- Nutgroove
- 05.05th
- --
- 06.06th
- Messer, KreismesserKnives, circular knives
- 07.07th
- Schneidkantecutting edge
- 08.08th
- Wellewave
- 09.09th
- SeitenwandSide wall
- 10.10th
- --
- 11.11th
- Blasdüseblow nozzle
- 12.12th
- Saugdüsesuction nozzle
- 13.13th
- Pfeilarrow
- 14.14th
- Längsachselongitudinal axis
- 15.15th
- --
- 16.16th
- Oberflächennormalesurface normal
- 17.17th
- Tangentetangent
- 18.18th
- Mündungmuzzle
- 19.19th
- Wandwall
- PP
- Auftreffpunktof impact
- αα
- Alphaalpha
- II
- lichte Weite der Blasdüse (11)clear width of blowing nozzle (11)
- LL
- lichte Weite der Saugdüse (12)clear width of the suction nozzle (12)
Claims (10)
- Slitter for cutting up a material web (02), comprising a roll (01) that supports the material web (02) and a knife (06) that interacts with the roll (01), a suction nozzle (12) being provided, characterized in that a blower nozzle (11) is provided and in that the blower nozzle (11) and suction nozzle (12) are arranged in the region of the outlet of the material web (02) and roll (01), and in that the clear width (L) of the suction nozzle (12) in the axial direction of the roll (01) is at least twice as large as the clear width (I) of the blower nozzle (11).
- Slitter for cutting up a material web (02), comprising a roll (01) that supports the material web (02) and a knife (06) that interacts with the roll (01), a suction nozzle (12) being provided, characterized in that a blower nozzle (11) is provided and in that the blower nozzle (11) and suction nozzle (12) are arranged in the region of the outlet of the material web (02) and roll (01), and in that a tangent (17) to the circumferential surface (03) at the point of intersection (P) of the circumferential surface (03) with the main blowing direction of the blower nozzle (11) intersects a wall (19) of the suction nozzle (12) that faces away from the blower nozzle (11).
- Slitter according to Claim 1 or 2, characterized in that the blower nozzle (11) has a clear width (I) in the axial direction of the roll (01) which is between 0.2 times and 2 times the width of a groove (04) interacting with the circular knife (06).
- Slitter according to Claim 1 or 2, characterized in that the roll (01) can be rotated in accordance with a conveying movement of the material web (02), and in that the blower nozzle (11) is oriented in order to produce at the circumferential surface (03) a fluid stream running predominantly counter to the direction of rotation of the roll (01).
- Slitter according to Claim 1, characterized in that a tangent (17) to the circumferential surface (03) at the point of intersection (P) of the circumferential surface (03) with the main blowing direction of the blower nozzle (11) intersects a wall (19) of the suction nozzle (12) that faces away from the blower nozzle (11 ).
- Slitter according to Claim 1 or 2, characterized in that a collecting container for the particles extracted by the suction nozzle (12) is provided.
- Slitter according to one of the preceding claims, characterized in that the fluid stream is an air stream.
- Method of cleaning a slitter comprising a roll (01) that supports a material web (02) to be cut, and comprising a suction nozzle (12), characterized in that a fluid stream is blown towards a region of the circumferential surface (03) of the roll (01) that faces away from the material web (02), and in that the fluid stream flows over the circumferential surface (03) of the roll (01) counter to the direction of movement of the latter, and in that a tangent (17) to the circumferential surface (03) at the point of intersection (P) of the circumferential surface (03) with the main blowing direction of a blower nozzle (11) intersects a wall (19) of the suction nozzle (12) that faces away from the blower nozzle (11).
- Method according to Claim 8, characterized in that the fluid stream is extracted from the circumferential surface (03) of the roll (01) before it encounters the material web (02).
- Method according to Claim 9, characterized in that the extracted fluid stream is freed of particles.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10108234 | 2001-02-21 | ||
| DE10108234A DE10108234B4 (en) | 2001-02-21 | 2001-02-21 | Slitting device for a material web and method for cleaning the slitting device |
| PCT/DE2002/000100 WO2002066212A1 (en) | 2001-02-21 | 2002-01-17 | Cleaning device for a longitudinal cutting device and method for cleaning said cutting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1361937A1 EP1361937A1 (en) | 2003-11-19 |
| EP1361937B1 true EP1361937B1 (en) | 2004-11-10 |
Family
ID=7674930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02703490A Expired - Lifetime EP1361937B1 (en) | 2001-02-21 | 2002-01-17 | Cleaning device for a longitudinal cutting device and method for cleaning said cutting device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7147724B2 (en) |
| EP (1) | EP1361937B1 (en) |
| AT (1) | ATE281908T1 (en) |
| DE (2) | DE10108234B4 (en) |
| WO (1) | WO2002066212A1 (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7000622B2 (en) * | 2002-09-30 | 2006-02-21 | Lam Research Corporation | Methods and systems for processing a bevel edge of a substrate using a dynamic liquid meniscus |
| DE102008053760B4 (en) * | 2008-10-29 | 2021-09-02 | manroland sheetfed GmbH | Printing or coating machine with a device for longitudinal cutting of sheet material |
| JP5634927B2 (en) * | 2011-03-23 | 2014-12-03 | 富士フイルム株式会社 | Film cutting apparatus and method, and film manufacturing method |
| EP3007870B1 (en) | 2013-06-12 | 2017-07-26 | The Procter and Gamble Company | The method of perforating a nonlinear line of weakness |
| MX2015017172A (en) | 2013-06-12 | 2016-03-16 | Procter & Gamble | A nonlinear line of weakness formed by a perforating apparatus. |
| WO2016148899A1 (en) | 2015-03-17 | 2016-09-22 | The Procter & Gamble Company | Apparatus for perforating a web material |
| WO2016148900A1 (en) | 2015-03-17 | 2016-09-22 | The Procter & Gamble Company | Apparatus for perforating a nonlinear line of weakness |
| WO2016148894A1 (en) | 2015-03-17 | 2016-09-22 | The Procter & Gamble Company | Method for perforating a nonlinear line of weakness |
| IT201700064754A1 (en) * | 2017-06-12 | 2018-12-12 | Ace Di Barbui Davide & Figli Srl | POWDER EXTRACTION GROUP FOR CONTINUOUS CUTTING GROUP OF SHEET OR COIL MATERIAL, CONTINUOUS CUTTING GROUP, PRODUCTION LINE |
| US11806890B2 (en) * | 2017-09-11 | 2023-11-07 | The Procter & Gamble Company | Perforating apparatus and method for manufacturing a shaped line of weakness |
| US11008710B2 (en) | 2017-09-11 | 2021-05-18 | The Procter & Gamble Company | Sanitary tissue product with a shaped line of weakness |
| US11806889B2 (en) | 2017-09-11 | 2023-11-07 | The Procter & Gamble Company | Perforating apparatus and method for manufacturing a shaped line of weakness |
| CN108673939A (en) * | 2018-05-16 | 2018-10-19 | 湖州新空环保设备有限公司 | A kind of packing box paperboard die-cutting machine |
| CN109482578A (en) * | 2018-12-31 | 2019-03-19 | 桂林电子科技大学 | A kind of target dust-extraction unit |
| US11499124B2 (en) * | 2020-03-13 | 2022-11-15 | YFY Consumer Products, Co. | Solid granules used for cleaning agents |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1746431A (en) * | 1928-03-19 | 1930-02-11 | Kolitsch August | Drying apparatus |
| US1806458A (en) * | 1929-04-18 | 1931-05-19 | Johnson & Johnson | Mechanism for slitting fabric |
| DE631858C (en) * | 1933-05-06 | 1936-06-27 | Thomas Hamilton Grozier | Device for catching and collecting paper dust and other waste produced when cutting paper webs |
| US2234153A (en) * | 1939-02-16 | 1941-03-04 | United Eng Foundry Co | Method and apparatus for manufacturing metallic strip |
| US2472596A (en) * | 1946-05-17 | 1949-06-07 | Eastman Kodak Co | Removal of excess liquid from wet film |
| US2956300A (en) * | 1956-09-17 | 1960-10-18 | Oxy Dry Sprayer Corp | Web tensioning and cleaning apparatus |
| GB909634A (en) | 1960-11-21 | 1962-10-31 | Cons Thermoplastics Company | Improvements in or relating to film-piercing apparatus |
| DE2164554A1 (en) | 1971-12-24 | 1973-06-28 | Jagenberg Werke Ag | DEVICE FOR DUST-FREE LONGITUDINAL CUTTING OF RUNNING MATERIAL RAILS MADE OF PAPER, CARDBOARD, PLASTIC FILM OD. DGL |
| DE2602236A1 (en) * | 1976-01-22 | 1977-07-28 | Maschf Augsburg Nuernberg Ag | DEVICE FOR CONTINUOUS DUST COLLECTION OF MATERIAL TRAILS |
| DE3479749D1 (en) | 1984-12-03 | 1989-10-19 | Temming Ag Peter | Format paper with a low dust content, process for its manufacture and its use |
| DE3730631A1 (en) | 1987-09-11 | 1989-03-23 | Pelikan Ag | Crush cutter device |
| SE461636B (en) | 1987-11-23 | 1990-03-12 | Ove Larsson | SKAERTRISSA |
| DE3906376A1 (en) | 1989-03-01 | 1990-09-06 | Will E C H Gmbh & Co | Device for slitting moving webs of material |
| DE4018074C2 (en) * | 1990-06-06 | 1995-09-14 | Voith Gmbh J M | Device for cleaning a rotating paper machine screen |
| JPH0798318B2 (en) | 1992-07-08 | 1995-10-25 | 明産株式会社 | Dust collector |
| FI94271C (en) | 1992-11-03 | 1995-08-10 | Valmet Paper Machinery Inc | Method of cleaning rollers and roller cleaning device |
| JPH07237185A (en) * | 1994-02-28 | 1995-09-12 | Hitachi Chem Co Ltd | Sheet cutting device |
| DE4408075C2 (en) | 1994-03-10 | 1998-10-29 | Roland Man Druckmasch | Device for longitudinally cutting substrates in sheet and roll machines |
| DE4425666C2 (en) | 1994-07-20 | 1997-04-17 | Roland Man Druckmasch | Device for slitting webs |
| EP0789635B1 (en) * | 1994-09-06 | 1999-08-11 | Patent Consulting & Development GmbH | Method and apparatus for removing dust particles from a relatively moving material web |
| JP2983916B2 (en) * | 1996-12-04 | 1999-11-29 | 明産株式会社 | Dust collection device |
| DE19702196C5 (en) * | 1997-01-23 | 2010-04-22 | Voith Patent Gmbh | Device for cleaning a conveyor belt |
| US6093256A (en) | 1997-11-14 | 2000-07-25 | Fort James Corp | Embossing roll cleaning method |
| FI3921U1 (en) | 1999-01-12 | 1999-04-21 | Valmet Corp | Apparatus for cleaning paper machine tissues |
| DE10016822C2 (en) | 2000-04-06 | 2002-08-01 | Koenig & Bauer Ag | Device for dedusting a web |
-
2001
- 2001-02-21 DE DE10108234A patent/DE10108234B4/en not_active Expired - Fee Related
-
2002
- 2002-01-17 WO PCT/DE2002/000100 patent/WO2002066212A1/en not_active Application Discontinuation
- 2002-01-17 AT AT02703490T patent/ATE281908T1/en not_active IP Right Cessation
- 2002-01-17 EP EP02703490A patent/EP1361937B1/en not_active Expired - Lifetime
- 2002-01-17 US US10/467,333 patent/US7147724B2/en not_active Expired - Fee Related
- 2002-01-17 DE DE50201514T patent/DE50201514D1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US7147724B2 (en) | 2006-12-12 |
| ATE281908T1 (en) | 2004-11-15 |
| WO2002066212A1 (en) | 2002-08-29 |
| US20040064911A1 (en) | 2004-04-08 |
| EP1361937A1 (en) | 2003-11-19 |
| DE10108234B4 (en) | 2004-03-18 |
| DE50201514D1 (en) | 2004-12-16 |
| DE10108234A1 (en) | 2002-09-26 |
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