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DE4200147A1 - Upper blade for circular pair of cutters to cut paper or cardboard into lengths - has cutting edge with two different bevels and is faced on cutting side with abrasion resistant hard metal insert - Google Patents

Upper blade for circular pair of cutters to cut paper or cardboard into lengths - has cutting edge with two different bevels and is faced on cutting side with abrasion resistant hard metal insert

Info

Publication number
DE4200147A1
DE4200147A1 DE19924200147 DE4200147A DE4200147A1 DE 4200147 A1 DE4200147 A1 DE 4200147A1 DE 19924200147 DE19924200147 DE 19924200147 DE 4200147 A DE4200147 A DE 4200147A DE 4200147 A1 DE4200147 A1 DE 4200147A1
Authority
DE
Germany
Prior art keywords
cutting
cutting edge
cardboard
abrasion resistant
upper blade
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.)
Withdrawn
Application number
DE19924200147
Other languages
German (de)
Inventor
Georg Mueller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Paper Jagenberg GmbH
Original Assignee
Jagenberg AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jagenberg AG filed Critical Jagenberg AG
Priority to DE19924200147 priority Critical patent/DE4200147A1/en
Publication of DE4200147A1 publication Critical patent/DE4200147A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/28—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass cutting tools
    • 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
    • B26D1/0006—Cutting members therefor
    • 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
    • B26D1/0006—Cutting members therefor
    • B26D2001/002—Materials or surface treatments therefor, e.g. composite materials
    • 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
    • B26D1/0006—Cutting members therefor
    • B26D2001/0046—Cutting members therefor rotating continuously about an axis perpendicular to the edge
    • 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
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • 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
    • B26D1/0006—Cutting members therefor
    • B26D2001/0066—Cutting members therefor having shearing means, e.g. shearing blades, abutting blades

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Nonmetal Cutting Devices (AREA)

Abstract

The upper blade is basically a disc with a cutting edge (5) formed by a pressure surface (6) bevelled back at an angle of between 3 and 15 deg. and between 0.2 mm and 1.0 mm long axially. There is a second sharper bevel towards the back of the blade (4) at an angle of between 30 and 45 deg. An insert between 0.2 and 0.5 mm thick of hard abrasion resistant metal (7) is let into the cutting face of the disc and extends radially from the edge (5) more than 15 mm towards the centre. USE/ADVANTAGE - High quality cut in paper or cardboard is achieved at low cost.

Description

Die Erfindung betrifft ein Obermesser für ein Kreismesserpaar zum Längsschneiden von Materialbahnen, insbesondere Papier- oder Kartonbahnen, gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to an upper knife for a pair of circular knives Slitting material webs, in particular paper or cardboard webs, according to the preamble of claim 1.

Bekannterweise werden zum Längsschneiden von Materialbahnen in Verarbeitungsmaschinen, z. B. Wickelmaschinen oder Querschneidemaschinen, Kreismesserpaare eingesetzt die die Bahnen durch sogenanntes Scher-Schneiden in Längsrichtung aufteilen. Die Kreismesserpaare bestehen aus einem scheibenförmigen Obermesser und einem topfförmigen Untermesser, das teilweise von den Bahnen umschlungen ist, wobei die Schneidkanten beider Messer beim Schneiden sich gegenseitig berühren und so einem erhöhten Verschleiß unterliegen. Um die Standzeiten der Kreismesserpaare zu erhöhen, ist aus der EP-02 97 399 B1 ein Kreismesserpaar mit einem gattungsgemäßen Obermesser bekannt, dessen Schneidkante aus einem abriebfesten und harten Material besteht. Die Rückenseite des Obermessers bildet mit der Schneidseite einen spitzen Winkel, zusätzlich befindet sich am Scheitel eine schmale, zylindrische Fläche, die von der Messerkante in axiale Richtung verläuft.As is known, for the longitudinal cutting of material webs in Processing machines, e.g. B. winding machines or cross cutting machines, Circular knife pairs used the sheets by so-called shear cutting split lengthways. The circular knife pairs consist of one disc-shaped upper knife and a pot-shaped lower knife, which partially is wrapped in the webs, the cutting edges of both knives at Cutting edges touch each other and so increased wear subject to. In order to increase the service life of the pairs of circular knives, the EP-02 97 399 B1 a pair of circular knives with a generic upper knife known, the cutting edge of an abrasion-resistant and hard material consists. The back of the upper knife forms one with the cutting side acute angle, in addition there is a narrow, cylindrical surface that runs from the knife edge in the axial direction.

Der Erfindung liegt die Aufgabe zugrunde, ein Obermesser für ein Kreismesser­ paar zu schaffen, das verschleißfest, unempfindlich gegen stoßartige mechanische Beanspruchungen und kostengünstig zu fertigen ist und mit hoher Qualität schneidet.The invention has for its object an upper knife for a circular knife couple to create the wear-resistant, insensitive to shock-like mechanical stress and inexpensive to manufacture and with high Quality cuts.

Diese Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved with the features of patent claim 1.

Die Unteransprüche enthalten bevorzugte, da besonders vorteilhafte Ausführungen der Erfindung.The sub-claims contain preferred, since particularly advantageous Embodiments of the invention.

Die Zeichnung dient zur Erläuterung der Erfindung anhand eines vereinfacht dargestellten Ausführungsbeispiels.The drawing serves to explain the invention with reference to a simplified illustrated embodiment.

Fig. 1 zeigt einen Querschnitt durch ein Obermesser nach der Erfindung. Fig. 1 shows a cross section through an upper knife according to the invention.

Fig. 2 zeigt in vergrößerter Darstellung den Bereich der Schneidkante. Fig. 2 shows an enlarged view of the area of the cutting edge.

Das Obermesser weist einen scheibenförmigen Grundkörper 1 mit einer zentralen Bohrung 2 auf, mit der es über ein auf einem Zapfen befestigtes Lager geschoben und an diesem befestigt wird. Der Grundkörper 1 ist aus Stahl Aluminium oder Kunststoff gefertigt und weist einen Durchmesser von ca. 200 mm und eine Dicke von ca. 4 mm auf. Radial außen ist der Grundkörper 1 auf seiner der Schneidseite 3 kegelstumpfförmig abgeschrägt, wobei die schräg zur Drehachse verlaufende Rückenseite 4 mit der Schneidseite 3 einen Keilwinkel α zwischen 30° und 45° bildet. Die Schneidkante 5 wird einerseits von der Schneidseite 3 und andererseits von einer Druckfläche 6 gebildet, die stumpfwinklig abgeschrägt zur Rückenseite 4 verläuft. Es entsteht so ein Druckwinkel β zwischen der Druckfläche 6 und der senkrechten zur Schneidseite 3, der zwischen 3° und 15° beträgt. Die Länge a der Druckfläche 6 in axialer Richtung beträgt zwischen 0,2 mm und 1 mm.The upper knife has a disk-shaped base body 1 with a central bore 2 , with which it is pushed over a bearing attached to a pin and attached to it. The base body 1 is made of steel, aluminum or plastic and has a diameter of approximately 200 mm and a thickness of approximately 4 mm. Radially outside, the base body 1 is beveled in the shape of a truncated cone on its cutting side 3 , the back side 4 , which extends obliquely to the axis of rotation, forms a wedge angle α between 30 ° and 45 ° with the cutting side 3 . The cutting edge 5 is formed, on the one hand, by the cutting side 3 and, on the other hand, by a pressure surface 6 which runs at an obtuse angle to the back side 4 . This creates a pressure angle β between the pressure surface 6 and the perpendicular to the cutting side 3 , which is between 3 ° and 15 °. The length a of the pressure surface 6 in the axial direction is between 0.2 mm and 1 mm.

Im Bereich der Schneidkante 5 ist auf der Schneidseite 3 eine Schicht (Schneidschicht 7) aus einem abriebfesten, harten Material aufgetragen, deren Dicke b zwischen 0,1 mm und 1 mm, bevorzugt zwischen 0,2 mm und 0,5 mm, beträgt. Die radial gemessene Höhe c der Schneidschicht 7 beträgt mindestens 10 mm, bevorzugt mehr als 15 mm, damit das Obermesser bei einem Verschleiß nachgeschliffen werden kann.In the area of the cutting edge 5 , a layer (cutting layer 7 ) made of an abrasion-resistant, hard material is applied on the cutting side 3 , the thickness b of which is between 0.1 mm and 1 mm, preferably between 0.2 mm and 0.5 mm. The radially measured height c of the cutting layer 7 is at least 10 mm, preferably more than 15 mm, so that the upper knife can be reground in the event of wear.

Die Schneidschicht besteht aus einem harten, verschleißfesten Material, insbesondere metallischen Hartstoffen wie Karbid, Nitrid oder Borid (z. B. Wolframkarbid-Kobalt) oder Keramiken (z. B. Chromoxyd CR2O3). Sie wird mittels Beschichtungsverfahren, z. B. durch Hochgeschwindigkeits-Flammspritzen, Detonationsbeschichtung oder Plasmabeschichtung, aufgetragen und anschließend fein geschliffen oder geläppt, damit eine feinste Oberfläche erzielt wird, wodurch die Standzeit vergrößert und das Ausbrechen an den Schneidkanten verhindert wird.The cutting layer consists of a hard, wear-resistant material, in particular metallic hard materials such as carbide, nitride or boride (e.g. tungsten carbide cobalt) or ceramics (e.g. chromium oxide CR 2 O 3 ). It is by means of coating processes, e.g. B. by high-speed flame spraying, detonation coating or plasma coating, applied and then finely ground or lapped, so that the finest surface is achieved, which increases the service life and prevents chipping at the cutting edges.

Claims (3)

1. Obermesser für ein Kreismesserpaar zum Längsschneiden von Materialbahnen, insbesondere Papier- oder Kartonbahnen mit einem scheibenförmigen Grundkörper (1), der eine mit der Schneidseite (3) einen spitzen Winkel (Keilwinkel α) bildende Rückenseite (3) aufweist, die zur Schneidkante (5) hin zusätzlich zu einer Druckfläche (6) abgewinkelt ist, und mit einer Schneidkante (5) aus einem harten, abriebfesten Material, dadurch gekennzeichnet, daß der Keilwinkel α zwischen 30° und 45°, der Druckwinkel β zwischen der Druckfläche (6) und der Senkrechten zur Schneidseite (3) zwischen 3° und 15° beträgt, und daß an der Schneidseite (3) im Bereich der Schneidkante (5) durch Beschichten eine Schicht (Schneidschicht 7) aus einem abriebfesten, harten Material aufgetragen ist, die eine Dicke zwischen 0,1 mm und 1 mm, bevorzugt zwischen 0,2 mm und 0,5 mm aufweist, und deren Höhe in radialer Richtung mindestens 10 mm, bevorzugt mehr als 15 mm, beträgt.Having 1 upper cutter for a pair of circular knives for longitudinally cutting material webs, in particular paper or cardboard webs with a disc-shaped base body (1), the (α wedge angle) an an acute angle with the cutting side (3) back side forming (3) to the cutting edge ( 5 ) is additionally angled towards a pressure surface ( 6 ), and with a cutting edge ( 5 ) made of a hard, abrasion-resistant material, characterized in that the wedge angle α between 30 ° and 45 °, the pressure angle β between the pressure surface ( 6 ) and the perpendicular to the cutting side ( 3 ) is between 3 ° and 15 °, and that on the cutting side ( 3 ) in the region of the cutting edge ( 5 ) by coating a layer (cutting layer 7) of an abrasion-resistant, hard material is applied, the one Thickness between 0.1 mm and 1 mm, preferably between 0.2 mm and 0.5 mm, and the height in the radial direction is at least 10 mm, preferably more than 15 mm. 2. Obermesser nach Anspruch 1, dadurch gekennzeichnet, daß die Länge der Druckfläche (6) in axialer Richtung zwischen 0,2 mm und 1 mm beträgt. 2. Upper knife according to claim 1, characterized in that the length of the pressure surface ( 6 ) in the axial direction is between 0.2 mm and 1 mm. 3. Obermesser nach Anspruch 1 oder 2, dadurch gekennzeich­ net, daß die Schneidschicht (7) nach dem Auftragen fein geschliffen oder geläppt wurde.3. Upper knife according to claim 1 or 2, characterized in that the cutting layer ( 7 ) has been finely ground or lapped after application.
DE19924200147 1992-01-07 1992-01-07 Upper blade for circular pair of cutters to cut paper or cardboard into lengths - has cutting edge with two different bevels and is faced on cutting side with abrasion resistant hard metal insert Withdrawn DE4200147A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19924200147 DE4200147A1 (en) 1992-01-07 1992-01-07 Upper blade for circular pair of cutters to cut paper or cardboard into lengths - has cutting edge with two different bevels and is faced on cutting side with abrasion resistant hard metal insert

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924200147 DE4200147A1 (en) 1992-01-07 1992-01-07 Upper blade for circular pair of cutters to cut paper or cardboard into lengths - has cutting edge with two different bevels and is faced on cutting side with abrasion resistant hard metal insert

Publications (1)

Publication Number Publication Date
DE4200147A1 true DE4200147A1 (en) 1993-07-08

Family

ID=6449138

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924200147 Withdrawn DE4200147A1 (en) 1992-01-07 1992-01-07 Upper blade for circular pair of cutters to cut paper or cardboard into lengths - has cutting edge with two different bevels and is faced on cutting side with abrasion resistant hard metal insert

Country Status (1)

Country Link
DE (1) DE4200147A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000021722A1 (en) * 1998-10-15 2000-04-20 Fabio Perini S.P.A. Disk-shape cutting tool, method of sharpening it and cutting machine using said tool
EP1306174A2 (en) * 2001-10-25 2003-05-02 Robert P. De Torre Resilent cutting blades
WO2004035273A1 (en) * 2002-10-18 2004-04-29 Fabio Perini S.P.A. Cutting machine with a sharpening unit for a blade, sharpening method and blade for said machine
CN110181241A (en) * 2019-06-25 2019-08-30 李坚 A kind of blade production technology

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706340A1 (en) * 1987-02-27 1988-09-08 Winter & Sohn Ernst METHOD FOR APPLYING A WEAR PROTECTIVE LAYER AND PRODUCT PRODUCED THEREOF
DE9000617U1 (en) * 1990-01-21 1990-05-31 BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München Circular cutting blade, particularly for a longitudinal cutting and/or creasing machine for corrugated cardboard

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3706340A1 (en) * 1987-02-27 1988-09-08 Winter & Sohn Ernst METHOD FOR APPLYING A WEAR PROTECTIVE LAYER AND PRODUCT PRODUCED THEREOF
DE9000617U1 (en) * 1990-01-21 1990-05-31 BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München Circular cutting blade, particularly for a longitudinal cutting and/or creasing machine for corrugated cardboard

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000021722A1 (en) * 1998-10-15 2000-04-20 Fabio Perini S.P.A. Disk-shape cutting tool, method of sharpening it and cutting machine using said tool
EP1306174A2 (en) * 2001-10-25 2003-05-02 Robert P. De Torre Resilent cutting blades
EP1306174A3 (en) * 2001-10-25 2005-05-25 Robert P. De Torre Resilent cutting blades
US7171884B2 (en) 2001-10-25 2007-02-06 De Torre Robert P Resilient cutting blades and cutting devices
WO2004035273A1 (en) * 2002-10-18 2004-04-29 Fabio Perini S.P.A. Cutting machine with a sharpening unit for a blade, sharpening method and blade for said machine
CN110181241A (en) * 2019-06-25 2019-08-30 李坚 A kind of blade production technology

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: JAGENBERG PAPIERTECHNIK GMBH, 41468 NEUSS, DE

8139 Disposal/non-payment of the annual fee