EP1488895A2 - Cutting blade and method of making thereof - Google Patents

Cutting blade and method of making thereof Download PDF

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Publication number
EP1488895A2
EP1488895A2 EP20040011343 EP04011343A EP1488895A2 EP 1488895 A2 EP1488895 A2 EP 1488895A2 EP 20040011343 EP20040011343 EP 20040011343 EP 04011343 A EP04011343 A EP 04011343A EP 1488895 A2 EP1488895 A2 EP 1488895A2
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EP
European Patent Office
Prior art keywords
cutting
knife
cutting knife
channels
carrier
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Withdrawn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
EP20040011343
Other languages
German (de)
French (fr)
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EP1488895A3 (en
Inventor
Gerhard Becker
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.)
Adolf Mohr Maschinenfabrik GmbH and Co KG
Original Assignee
Mohr Adolf
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 Mohr Adolf filed Critical Mohr Adolf
Publication of EP1488895A2 publication Critical patent/EP1488895A2/en
Publication of EP1488895A3 publication Critical patent/EP1488895A3/en
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting 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
    • B26D1/08—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 of the guillotine type
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support

Definitions

  • the invention relates to a cutting knife for cutting stacked, sheet-like material, the cutting knife having a wedge shape, with a Cutting surface and, for the material being cut, a deflecting surface at a wedge angle are arranged to each other and the line of intersection of the cutting edge of the cutting knife.
  • the invention further relates to a method for manufacturing of such a cutting knife.
  • Such cutting knives are used in particular to stack, sheet-like material, for example a stack of paper, in a pulling cut cut.
  • the good rests on a flat surface and it occurs if not is cut in the counter cut, the cutting knife in bottom dead center a cutting bar.
  • the cutting surface of the cutting knife defines the Cutting plane, while the cut material in the area of the deflecting surface of the Cutting knife is deflected.
  • the cut good is either for a benefit or for cutting waste.
  • Such devices for cutting stacked, sheet-like material are designed, for example, as single-knife cutting machines or three-knife trimmers.
  • DE 31 01 911 A1 describes a cutting machine in which the deflecting surface a brush device is assigned to the cutting knife. through This facility is intended to ensure that when lifting the Cutting knife adhering to the cutting knife after the cut has been made Cutting waste can be removed completely. In practice, this can be used in generally achieve satisfactory results. However, you cannot Always prevent material to be cut from getting stuck in the brush.
  • DE 34 44 952 A1 describes a cutting machine in which one separate blowing air nozzle is provided, with the blowing air in the direction of the deflecting surface of the cutting knife can be blown.
  • the air jet kicks in on the cutting knife essentially parallel to the deflecting surface.
  • Cutting knives are also known from the prior art, at where blown air is used to influence the cutting process. It but these are rotating cutting knives and devices for Cutting a leaf. Reference is made, for example, to DE 101 08 234 A1.
  • the object of the present invention is to provide a cutting knife of the input to create the type mentioned, which ensures that generated during the cut Cutting waste does not adhere to it. This should especially apply when cutting with the cutting knife material that tends to become charge electrostatically.
  • the object of the invention is also a method to specify for the manufacture of such a knife.
  • the task is solved with a cutting knife of the type mentioned in that there is in the area the deflecting surface with outlet openings for blowing air is provided.
  • the blowing air from the cutting knife emerges and consequently any cutting material which has a tendency to Sticking cutting knife is blown away by the cutting knife.
  • This is particularly so an advantage for material to be cut, which has the tendency to become electrostatic charge. This material to be cut is safely removed from the deflecting surface of the cutting knife blown away.
  • blowing air from the cutting knife through it Outlets.
  • the appropriate pressure level of the blown air is selected. It can do this absolutely compressed air, thus air with a relatively high pressure.
  • the blowing air can be directed through the cutting knife in different ways and way.
  • a structurally particularly simple design provided that holes in the cutting knife for the passage of the Blown air are integrated, with the holes in the area of the deflector Emerge from this.
  • the passage cross section for the blown air is essentially unchanged.
  • the holes can be very easily insert into the cutting knife.
  • Cutting knife nozzles are formed, for example, by the passages for the blowing air is in the direction of the outlet openings or in the region of the outlet openings taper conically.
  • the bores or passages for the blowing air are arranged parallel to the cutting surface of the cutting knife.
  • the cutting knife that this has a knife holder and a hard metal cutting edge inserted in it having. Both the knife holder and the carbide cutting edge are preferably provided with the deflecting surface.
  • the Bores and / or a connecting channel into which the bores open advantageously formed between the knife carrier and the hard metal cutting edge.
  • the blowing air is fed to the cutting knife, for example, by means of at least one hose, the side of the cutting knife, based on a side perpendicular to the cutting plane, with the cutting knife connected is.
  • This hose is connected to a compressed air source.
  • the cutting knife is preferred by first making channels in the Knife holder of the cutting knife are introduced.
  • the arrangement of the Channels are made according to the air flow in the cutting knife.
  • the knife holder is connected to the carbide edge of the cutting knife. Due to the arrangement of the knife carrier and carbide cutting edge the blow air passages formed in the cutting knife, which in the outlet openings lead.
  • there is no need to drill holes in it Introduce cutting knife but first the channels in the knife holder generated, especially by milling.
  • the channels are closed, to form the passages in the cutting knife, by connecting knife carriers and carbide cutting edge. This connection is made advantageously by Soldering.
  • the cutting knife shown in FIGS. 1 and 2 is found, for example, in a cutting machine use, as in DE 31 01 901 A1 or DE 37 13 897 A1 is disclosed.
  • the cutting knife 1 for cutting stacked, sheet-like material is wedge-shaped. It has a cutting surface 2 and a deflection surface 3 on. These are arranged at a wedge angle to each other. Their intersecting line forms the cutting edge 4 of the cutting knife 1.
  • the cutting knife 1 consists of a knife holder 5, which has a recess is provided for receiving a hard metal cutting edge 6.
  • the carbide cutting edge 6 is positioned with respect to the knife carrier 5 such that the deflecting surface sections 3a and 3b form a flat deflecting surface 3.
  • the cutting knife arranged side by side, has various hole arrangements 7, each hole arrangement 7 by three arranged one above the other Threaded bores 8 is formed. These are used to attach the Cutting knife 1, specifically the knife carrier 5 on a not shown Cutter bar of a cutting machine using screws.
  • the one above the other Arranged holes 8 are therefore provided to grind the Cutting knife 1 due to its regrinding, the reduced height extension to compensate for the cutting knife 1.
  • the cutting knife 1 penetrates, parallel to the cutting edge 4, an air duct 9, and a large number of further air ducts 10 extend vertically from it, whose outlet openings 11 are located in the area of the deflecting surface 3.
  • the air ducts 9 and 10 are produced by before soldering the hard metal cutting edge 6 to the knife carrier 5, grooves in the knife carrier 5 are milled in the area of the recess. In these Cutout of the knife carrier 5, the hard metal cutting edge 6 is then used and soldered to the knife carrier 5. When placing the hard metal cutting edge 6 on the knife carrier 5, the grooves are closed, making the Air channels 9 and 10 are formed. On opposite sides of the cutting knife 1, thus in the area of the outlet openings of the air duct 9 Connections 12 fastened with the cutting knife 1, with which hoses 13th get connected. Through this, compressed air becomes the air channels 9 and 10 fed.
  • the compressed air supply is preferably clocked so that it is in decline the cutting knife, thus when cutting, and when returning the Cutting knife is fed.
  • a connection between the cutter bar and the cutter holder be provided through which compressed air can be guided.
  • the Knife holder When attaching the Knife holder on the cutter bar are air holes in the cutter bar and coupled in the knife carrier.
  • the cutter bar or cutter carrier To provide coupling elements which when connected to the cutter bar Knife carriers interact and create a fluid-tight connection between ensure these parts. The cutting knife can be changed thus proceed as usual, automatically coupling the air connections he follows.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The knife is wedge-shaped. It has a cutting surface (2) and a deflector surface (3) for the cut paper, and a cutting edge (4). The knife has integrated channels (10) for blown air, which open into outlets (11) in its deflector surface. The channels open into a connection bore (9), which is connected to a compressed air supply (13), e.g. a hose. The knife consists of a carrier (5) and a hard metal blade (6) fitted into it and connected by soldering.

Description

Die Erfindung betrifft ein Schneidmesser zum Schneiden von gestapeltem, blattförmigem Gut, wobei das Schneidmesser Keilform aufweist, mit einer Schneidfläche und, für das geschnittene Gut, eine Abweisfläche, die im Keilwinkel zueinander angeordnet sind und deren Schnittgerade die Schneidkante des Schneidmessers bildet. Die Erfindung betrifft ferner ein Verfahren zum Herstellen eines solchen Schneidmessers.The invention relates to a cutting knife for cutting stacked, sheet-like material, the cutting knife having a wedge shape, with a Cutting surface and, for the material being cut, a deflecting surface at a wedge angle are arranged to each other and the line of intersection of the cutting edge of the cutting knife. The invention further relates to a method for manufacturing of such a cutting knife.

Derartige Schneidmesser werden insbesondere verwandt, um gestapeltes, blattförmiges Gut, beispielsweise einen Papierstapel, im ziehenden Schnitt zu durchtrennen. Das Gut ruht auf einer ebenen Unterlage und es tritt, sofern nicht im Gegenschnitt geschnitten wird, das Schneidmesser im unteren Totpunkt in eine Schneidleiste ein. Die Schneidfläche des Schneidmessers definiert die Schneidebene, während das geschnittene Gut im Bereich der Abweisfläche des Schneidmessers abgelenkt wird. Bei dem geschnittenen Gut handelt es sich entweder um einen Nutzen oder um Schneidabfall.Such cutting knives are used in particular to stack, sheet-like material, for example a stack of paper, in a pulling cut cut. The good rests on a flat surface and it occurs if not is cut in the counter cut, the cutting knife in bottom dead center a cutting bar. The cutting surface of the cutting knife defines the Cutting plane, while the cut material in the area of the deflecting surface of the Cutting knife is deflected. The cut good is either for a benefit or for cutting waste.

Derartige Vorrichtungen zum Schneiden von gestapeltem, blattförmigem Gut sind beispielsweise als Einmesserschneidmaschinen oder Dreischneider ausgebildet.Such devices for cutting stacked, sheet-like material are designed, for example, as single-knife cutting machines or three-knife trimmers.

In der Praxis zeigt es sich, dass beim Schneiden anfallender Schneidabfall im Bereich der Schneidzone verbleibt und damit für die weiteren Schnittfolgen nachteilig ist. Man ist bestrebt, zwischen den einzelnen Schnitten Schneidabfälle vollständig zu entsorgen, dies geschieht beispielsweise manuell.In practice, it turns out that cutting waste generated during cutting The area of the cutting zone remains and thus for the further cutting sequences is disadvantageous. One tries to cut waste between the individual cuts to dispose of completely, for example manually.

In der DE 31 01 911 A1 ist eine Schneidmaschine beschrieben, bei der der Abweisfläche des Schneidmessers eine Bürsteneinrichtung zugeordnet ist. Mittels dieser Einrichtung soll sichergestellt werden, dass beim Anheben des Schneidmessers nach erfolgtem Schnitt am Schneidmesser anhaftende Schneidabfälle vollständig entfernt werden. In der Praxis lassen sich hiermit in aller Regel zufriedenstellende Ergebnisse erzielen. Allerdings lässt sich nicht immer verhindern, dass Schneidgut in der Bürste hängen bleibt.DE 31 01 911 A1 describes a cutting machine in which the deflecting surface a brush device is assigned to the cutting knife. through This facility is intended to ensure that when lifting the Cutting knife adhering to the cutting knife after the cut has been made Cutting waste can be removed completely. In practice, this can be used in generally achieve satisfactory results. However, you cannot Always prevent material to be cut from getting stuck in the brush.

In der DE 34 44 952 A1 ist eine Schneidmaschine beschrieben, bei der eine separate Blasluftdüse vorgesehen ist, mit der Blasluft in Richtung der Abweisfläche des Schneidmessers geblasen werden kann. Der Luftstrahl tritt dabei im wesentlichen parallel zur Abweisfläche auf das Schneidmesser auf. Mit einer solchen Vorrichtung lassen sich gleichfalls keine vollständig zufriedenstellenden Ergebnisse erzielen, weil die Blasluft in Richtung des Ortes der Entstehung des Späneabfalls gerichtet ist, somit nicht in Richtung der eigentlichen gewünschten Abführrichtung des Abfalls und überdies bei sprödem Schneidgut die Gefahr besteht, dass Schneidabfälle in den Bereich der Blasluftdüse hoch spritzen und sich zwischen dieser und dem Schneidmesser verklemmen. Eine ähnliche Vorrichtung, mit demzufolge den selben Nachteilen, ist aus der DE 37 13 897 A1 bekannt.DE 34 44 952 A1 describes a cutting machine in which one separate blowing air nozzle is provided, with the blowing air in the direction of the deflecting surface of the cutting knife can be blown. The air jet kicks in on the cutting knife essentially parallel to the deflecting surface. With a such a device can also not be completely satisfactory Get results because the blowing air towards the place of origin of the Chip waste is directed, thus not in the direction of the actual desired Direction of discharge of the waste and, moreover, the danger in the case of brittle material to be cut there is cutting waste spraying up into the area of the blowing air nozzle and jam between this and the cutting knife. A similar device, with the same disadvantages, is from DE 37 13 897 A1 known.

In der DE 38 29 682 A2 ist ergänzend zu der vorgenannten Blasluftdüse eine weitere Blasluftdüse vorgesehen, die unmittelbar hinter der Schneidleiste angeordnet, somit in den Tisch, der das zu schneidende Gut aufnimmt, integriert ist. Der bauliche Aufwand einer solchen Vorrichtung ist erheblich, ohne wesentlich zur Verbesserung der Späneabfuhr beizutragen.DE 38 29 682 A2 is a supplement to the above-mentioned blowing air nozzle further blowing air nozzle is provided, which is arranged directly behind the cutting bar, thus integrated into the table that receives the material to be cut. The structural outlay of such a device is considerable without being essential to help improve chip removal.

Die Nachteile der vorstehend diskutierten Vorrichtungen sind noch größer, wenn Schneidgut zu schneiden ist, das sich elektrostatisch auflädt und demzufolge die Neigung hat, an metallischen Teilen, wie dem Schneidmesser quasi zu kleben. Solche Schneidabfälle können durch die vorbeschriebenen Blasluftdüsen bzw. die Bürste nicht oder nicht zufriedenstellend entfernt werden.The disadvantages of the devices discussed above are even greater when cutting material to be cut that is electrostatically charged and consequently has a tendency to close to metallic parts, such as the cutting knife glue. Such cutting waste can through the above-described blowing air nozzles or the brush is not removed or is not removed satisfactorily.

Aus dem Stand der Technik sind ferner Schneidmesser bekannt geworden, bei denen Blasluft zur Beeinflussung des Schneidvorgangs Verwendung findet. Es handelt sich hierbei aber um rotierende Schneidmesser und Vorrichtungen zum Schneiden eines Blattes. Verwiesen wird beispielsweise auf die DE 101 08 234 A1.Cutting knives are also known from the prior art, at where blown air is used to influence the cutting process. It but these are rotating cutting knives and devices for Cutting a leaf. Reference is made, for example, to DE 101 08 234 A1.

Aufgabe der vorliegenden Erfindung ist es, ein Schneidmesser der Eingangs genannten Art zu schaffen, bei dem sichergestellt ist, dass beim Schnitt erzeugte Schneidabfälle nicht an diesem haften. Dies soll insbesondere dann gelten, wenn mit dem Schneidmesser Material geschnitten wird, das dazu neigt, sich elektrostatisch aufzuladen. Aufgabe der Erfindung ist es ferner, ein Verfahren zur Herstellung eines solchen Messers anzugeben.The object of the present invention is to provide a cutting knife of the input to create the type mentioned, which ensures that generated during the cut Cutting waste does not adhere to it. This should especially apply when cutting with the cutting knife material that tends to become charge electrostatically. The object of the invention is also a method to specify for the manufacture of such a knife.

Gelöst wird die Aufgabe bei einem Schneidmesser der Eingangs genannten Art dadurch, dass es im Bereich die Abweisfläche mit Austrittsöffnungen für Blasluft versehen ist.The task is solved with a cutting knife of the type mentioned in that there is in the area the deflecting surface with outlet openings for blowing air is provided.

Erfindungsgemäß ist damit vorgesehen, dass die Blasluft aus dem Schneidmesser austritt und demzufolge jegliches Schneidgut, das die Tendenz hat, am Schneidmesser zu haften, vom Schneidmesser weggeblasen wird. Dies ist insbesondere von Vorteil bei Schneidgut, das die Neigung hat, sich elektrostatisch aufzuladen. Dieses Schneidgut wird sicher von der Abweisfläche des Schneidmessers weggeblasen.According to the invention it is provided that the blowing air from the cutting knife emerges and consequently any cutting material which has a tendency to Sticking cutting knife is blown away by the cutting knife. This is particularly so an advantage for material to be cut, which has the tendency to become electrostatic charge. This material to be cut is safely removed from the deflecting surface of the cutting knife blown away.

Wesentlich ist damit, dass die Blasluft aus dem Schneidmesser durch dessen Austrittsöffnungen ausströmt. In Abhängigkeit von dem zu schneidenden Gut, beispielsweise gestapelten Blättern aus Seidenpapier, Kunststofffolie, Papier usw. wird das geeignete Druckniveau der Blasluft gewählt. Es kann sich hierbei durchaus um Druckluft, somit Luft mit relativ hohem Druck handeln.It is essential that the blowing air from the cutting knife through it Outlets. Depending on the material to be cut, for example, stacked sheets of tissue paper, plastic film, paper etc. the appropriate pressure level of the blown air is selected. It can do this absolutely compressed air, thus air with a relatively high pressure.

Die Leitung der Blasluft durch das Schneidmesser kann auf unterschiedliche Art und Weise erfolgen. Gemäß einer baulich besonders einfachen Gestaltung ist vorgesehen, dass in das Schneidmesser Bohrungen für die Durchleitung der Blasluft integriert sind, wobei die Bohrungen im Bereich der Abweisfläche des Schneidmessers aus diesem austreten. Der Durchtrittsquerschnitt für die Blasluft ist damit im wesentlichen unverändert. Die Bohrungen lassen sich sehr einfach in das Schneidmesser einbringen. Es ist durchaus denkbar, dass in dem Schneidmesser Düsen gebildet sind, beispielsweise indem die Durchgänge für die Blasluft sich in Richtung der Austrittsöffnungen bzw. im Bereich der Austrittsöffnungen konisch verjüngen. Gemäß einer besonders einfachen Gestaltung des Schneidmessers ist vorgesehen, dass die Bohrungen bzw. Durchlässe für die Blasluft parallel zur Schneidfläche des Schneidmessers angeordnet sind. The blowing air can be directed through the cutting knife in different ways and way. According to a structurally particularly simple design provided that holes in the cutting knife for the passage of the Blown air are integrated, with the holes in the area of the deflector Emerge from this. The passage cross section for the blown air is essentially unchanged. The holes can be very easily insert into the cutting knife. It is quite conceivable that Cutting knife nozzles are formed, for example, by the passages for the blowing air is in the direction of the outlet openings or in the region of the outlet openings taper conically. According to a particularly simple design of the cutting knife it is provided that the bores or passages for the blowing air are arranged parallel to the cutting surface of the cutting knife.

Es ist durchaus denkbar, die Luft nicht parallel zur Schneidfläche, sondern senkrecht zur Keilfläche austreten zu lassen.It is quite conceivable that the air is not parallel to the cutting surface, but to emerge perpendicular to the wedge surface.

Gemäß einer besonders vorteilhaften Gestaltung des Schneidmessers ist vorgesehen, dass dieses einen Messerträger und eine in diesen eingesetzte Hartmetallschneide aufweist. Sowohl der Messerträger als auch die Hartmetallschneide sind vorzugsweise mit der Abweisfläche versehen. Bei einer Ausbildung des Schneidmessers mit Messerträger und Hartmetallschneide sind die Bohrungen und / oder ein Verbindungskanal, in den die Bohrungen münden, vorteilhaft zwischen dem Messerträger und der Hartmetallschneide gebildet.According to a particularly advantageous design of the cutting knife, that this has a knife holder and a hard metal cutting edge inserted in it having. Both the knife holder and the carbide cutting edge are preferably provided with the deflecting surface. During an apprenticeship of the cutting knife with knife carrier and carbide cutting edge are the Bores and / or a connecting channel into which the bores open, advantageously formed between the knife carrier and the hard metal cutting edge.

Das Zuführen der Blasluft zum Schneidmesser erfolgt beispielsweise mittels mindestens eines Schlauches, der seitlich des Schneidmessers, bezogen auf eine senkrecht zur Schneidebene angeordnete Seite, mit dem Schneidmesser verbunden ist. Dieser Schlauch steht in Verbindung mit einer Druckluftquelle.The blowing air is fed to the cutting knife, for example, by means of at least one hose, the side of the cutting knife, based on a side perpendicular to the cutting plane, with the cutting knife connected is. This hose is connected to a compressed air source.

Hergestellt wird das Schneidmesser bevorzugt, indem zunächst Kanäle in den Messerträger des Schneidmessers eingebracht werden. Die Anordnung der Kanäle erfolgt entsprechend der Luftführung im Schneidmesser. Anschließend wird der Messerträger mit der Hartmetallschneide des Schneidmessers verbunden. Aufgrund der Anordnung von Messerträger und Hartmetallschneide werden die Blasluftdurchlässe im Schneidmesser gebildet, die in die Austrittsöffnungen münden. In diesem Fall ist es damit nicht erforderlich, Bohrungen in das Schneidmesser einzubringen, sondern es werden zunächst die Kanäle im Messerträger erzeugt, insbesondere durch Fräsen. Geschlossen werden die Kanäle, zur Bildung der Durchgänge im Schneidmesser, durch Verbinden von Messerträger und Hartmetallschneide. Diese Verbindung erfolgt vorteilhaft durch Löten.The cutting knife is preferred by first making channels in the Knife holder of the cutting knife are introduced. The arrangement of the Channels are made according to the air flow in the cutting knife. Subsequently the knife holder is connected to the carbide edge of the cutting knife. Due to the arrangement of the knife carrier and carbide cutting edge the blow air passages formed in the cutting knife, which in the outlet openings lead. In this case, there is no need to drill holes in it Introduce cutting knife, but first the channels in the knife holder generated, especially by milling. The channels are closed, to form the passages in the cutting knife, by connecting knife carriers and carbide cutting edge. This connection is made advantageously by Soldering.

Weitere Merkmale der Erfindung sind in der Beschreibung der Figuren und den Figuren selbst dargestellt, wobei bemerkt wird, dass alle Einzelmerkmale und Kombinationen von Einzelmerkmalen erfindungswesentlich sind. Further features of the invention are in the description of the figures and the Figures themselves represented, it being noted that all individual features and Combinations of individual features are essential to the invention.

In den Figuren ist die Erfindung anhand eines Ausführungsbeispiels dargestellt, ohne auf dieses beschränkt zu sein. Es zeigt:

Figur 1
eine Ansicht des erfindungsgemäßen Schneidmessers, in Richtung einer Hauptfläche gesehen, der die Abweisfläche des Schneidmessers zugeordnet ist (Ansicht B gemäß Figur 2) und
Figur 2
einen Schnitt durch das Schneidmesser gemäß der Linie A-A in Figur 1, veranschaulicht in vergrößerter Darstellung.
The invention is illustrated in the figures using an exemplary embodiment, without being limited to this. It shows:
Figure 1
a view of the cutting knife according to the invention, seen in the direction of a main surface to which the deflecting surface of the cutting knife is assigned (view B according to Figure 2) and
Figure 2
a section through the cutting knife along the line AA in Figure 1, illustrated in an enlarged view.

Das in den Figuren 1 und 2 gezeigte Schneidmesser findet beispielsweise bei einer Schneidmaschine Verwendung, wie sie in der DE 31 01 901 A1 oder DE 37 13 897 A1 geoffenbart ist.The cutting knife shown in FIGS. 1 and 2 is found, for example, in a cutting machine use, as in DE 31 01 901 A1 or DE 37 13 897 A1 is disclosed.

Das Schneidmesser 1 zum Schneiden von gestapeltem, blattförmigem Gut ist keilförmig ausgebildet. Es weist eine Schneidfläche 2 und eine Abweisfläche 3 auf. Diese sind im Keilwinkel zueinander angeordnet. Deren Schnittgerade bildet die Schneidkante 4 des Schneidmessers 1.The cutting knife 1 for cutting stacked, sheet-like material is wedge-shaped. It has a cutting surface 2 and a deflection surface 3 on. These are arranged at a wedge angle to each other. Their intersecting line forms the cutting edge 4 of the cutting knife 1.

Das Schneidmesser 1 besteht aus einem Messerträger 5, der mit einem Rücksprung zur Aufnahme einer Hartmetallschneide 6 versehen ist. Die Hartmetallschneide 6 ist bezüglich des Messerträgers 5 so positioniert, dass die Abweisflächenabschnitte 3a und 3b eine ebene Abweisfläche 3 bilden. Im oberen Bereich weist das Schneidmesser, nebeneinander angeordnet, diverse Lochanordnungen 7 auf, wobei jede Lochanordnung 7 durch drei übereinander angeordnete Gewindebohrungen 8 gebildet ist. Diese dienen der Befestigung des Schneidmessers 1, konkret des Messerträgers 5 an einem nicht gezeigten Messerbalken einer Schneidmaschine mittels Schrauben. Die übereinander angeordneten Bohrungen 8 sind deshalb vorgesehen, um bei Abschliff des Schneidmessers 1 infolge dessen Nachschleifens die verminderte Höhenerstreckung des Schneidmessers 1 ausgleichen zu können. The cutting knife 1 consists of a knife holder 5, which has a recess is provided for receiving a hard metal cutting edge 6. The carbide cutting edge 6 is positioned with respect to the knife carrier 5 such that the deflecting surface sections 3a and 3b form a flat deflecting surface 3. In the upper area the cutting knife, arranged side by side, has various hole arrangements 7, each hole arrangement 7 by three arranged one above the other Threaded bores 8 is formed. These are used to attach the Cutting knife 1, specifically the knife carrier 5 on a not shown Cutter bar of a cutting machine using screws. The one above the other Arranged holes 8 are therefore provided to grind the Cutting knife 1 due to its regrinding, the reduced height extension to compensate for the cutting knife 1.

Das Schneidmesser 1 durchsetzt, parallel zur Schneidkante 4, ein Luftkanal 9, und es gehen von diesem eine Vielzahl weiterer Luftkanäle 10 senkrecht ab, deren Austrittsöffnungen 11 sich im Bereich der Abweisfläche 3 befinden.The cutting knife 1 penetrates, parallel to the cutting edge 4, an air duct 9, and a large number of further air ducts 10 extend vertically from it, whose outlet openings 11 are located in the area of the deflecting surface 3.

Hergestellt werden die Luftkanäle 9 und 10, indem entsprechend deren Verlauf, vor dem Verlöten der Hartmetallschneide 6 mit dem Messerträger 5, Nuten in den Messerträger 5 im Bereich dessen Aussparung eingefräst werden. In diese Aussparung des Messerträgers 5 wird dann die Hartmetallschneide 6 eingesetzt und mit dem Messerträger 5 verlötet. Beim Auflegen der Hartmetallschneide 6 auf den Messerträger 5 werden die Nuten geschlossen, womit die Luftkanäle 9 und 10 gebildet sind. Auf gegenüberliegenden Seiten des Schneidmessers 1, somit im Bereich der Austrittsöffnungen des Luftkanals 9 werden Anschlüsse 12 mit dem Schneidmesser 1 befestigt, mit denen Schläuche 13 verbunden werden. Durch diese wird Druckluft den Luftkanälen 9 und 10 zugeführt. Vorzugsweise ist die Druckluftzufuhr so getaktet, dass sie beim Niedergang des Schneidmessers, somit beim Schnitt, und beim Rückhub des Schneidmessers zugeführt wird.The air ducts 9 and 10 are produced by before soldering the hard metal cutting edge 6 to the knife carrier 5, grooves in the knife carrier 5 are milled in the area of the recess. In these Cutout of the knife carrier 5, the hard metal cutting edge 6 is then used and soldered to the knife carrier 5. When placing the hard metal cutting edge 6 on the knife carrier 5, the grooves are closed, making the Air channels 9 and 10 are formed. On opposite sides of the cutting knife 1, thus in the area of the outlet openings of the air duct 9 Connections 12 fastened with the cutting knife 1, with which hoses 13th get connected. Through this, compressed air becomes the air channels 9 and 10 fed. The compressed air supply is preferably clocked so that it is in decline the cutting knife, thus when cutting, and when returning the Cutting knife is fed.

Statt der Zuführung der Druckluft mittels eines Schlauches zum Schneidmesser kann durchaus eine Verbindung zwischen Messerbalken und dem Messerträger vorgesehen sein, durch die Druckluft geführt werden kann. Beim Befestigen des Messerträgers am Messerbalken werden Luftbohrungen im Messerbalken und im Messerträger gekuppelt. Am Messerbalken oder Messerträger sind entsprechend Kupplungselemente vorzusehen, die bei mit dem Messerbalken verbundenem Messerträger zusammenwirken und eine fluiddichte Verbindung zwischen diesen Teilen gewährleisten. Der Wechsel des Schneidmessers kann somit wie üblich vonstatten gehen, wobei automatisch die Kupplung der Luftanschlüsse erfolgt. Instead of supplying compressed air to the cutting knife using a hose can be a connection between the cutter bar and the cutter holder be provided through which compressed air can be guided. When attaching the Knife holder on the cutter bar are air holes in the cutter bar and coupled in the knife carrier. Corresponding to the cutter bar or cutter carrier To provide coupling elements which when connected to the cutter bar Knife carriers interact and create a fluid-tight connection between ensure these parts. The cutting knife can be changed thus proceed as usual, automatically coupling the air connections he follows.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Schneidmessercutting blade
22
Schneidflächecutting surface
33
Abweisflächedeflecting
3a3a
Abschnittsection
3b3b
Abschnittsection
44
Schneidkantecutting edge
55
Messerträgerblade carrier
66
HartmetallschneideCarbide cutting
77
Lochanordnungenhole arrangements
88th
Gewindebohrungenthreaded holes
99
Luftkanalair duct
1010
Luftkanalair duct
1111
Austrittsöffnungoutlet opening
1212
Anschlussconnection
1313
Schlauchtube

Claims (11)

Schneidmesser (1) zum Schneiden von gestapeltem, blattförmigem Gut, wobei das Schneidmesser (1) Keilform aufweist, mit einer Schneidfläche (2) und, für das geschnittene Gut, einer Abweisfläche (3), die im Keilwinkel zueinander angeordnet sind, und deren Schnittgerade die Schneidkante (4) des Schneidmessers (1) bildet, dadurch gekennzeichnet, dass das Schneidmesser (1) im Bereich der Abweisfläche (3) mit Austrittsöffnungen (11) für Blasluft versehen ist.Cutting knife (1) for cutting stacked, sheet-like material, the cutting knife (1) having a wedge shape, with a cutting surface (2) and, for the cut material, a deflecting surface (3), which are arranged at a wedge angle with respect to one another, and their cutting line forms the cutting edge (4) of the cutting knife (1), characterized in that the cutting knife (1) is provided in the region of the deflecting surface (3) with outlet openings (11) for blowing air. Schneidmesser nach Anspruch 1, dadurch gekennzeichnet, dass in das Schneidmesser (1) Bohrungen bzw. Kanäle (9, 10) für Blasluft integriert sind, wobei die Bohrungen bzw. Kanäle (9, 10) im Bereich der Abweisfläche (3) des Schneidmesser (1) aus diesem austreten.Cutting knife according to claim 1, characterized in that bores or channels (9, 10) for blown air are integrated in the cutting knife (1), the bores or channels (9, 10) in the region of the deflecting surface (3) of the cutting knife ( 1) exit this. Schneidmesser nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Bohrungen bzw. Kanäle (9, 10) an eine Druckluftzufuhr (13) anschließbar sind.Cutting knife according to claim 1 or 2, characterized in that the bores or channels (9, 10) can be connected to a compressed air supply (13). Schneidmesser nach Anspruch 3, dadurch gekennzeichnet, dass die Bohrungen bzw. Kanäle (10) in einen Verbindungskanal (9) münden, der an eine Druckluftzufuhr (13) anschließbar ist.Cutting knife according to claim 3, characterized in that the bores or channels (10) open into a connecting channel (9) which can be connected to a compressed air supply (13). Schneidmesser nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass es einen Messerträger (5) und eine in diesen eingesetzte Hartmetallschneide (6) aufweist.Cutting knife according to one of claims 1 to 4, characterized in that it has a knife carrier (5) and a hard metal cutting edge (6) inserted therein. Schneidmesser nach Anspruch 5, dadurch gekennzeichnet, dass die Bohrungen bzw. Kanäle (9, 10) zwischen dem Messerträger (5) und der Hartmetallschneide (6) gebildet sind. Cutting knife according to claim 5, characterized in that the bores or channels (9, 10) are formed between the knife carrier (5) and the hard metal cutting edge (6). Schneidmesser nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Hartmetallschneide (6) und der Messerträger (5) mittels einer Lötverbindung miteinander verbunden sind.Cutting knife according to claim 5 or 6, characterized in that the hard metal cutting edge (6) and the knife carrier (5) are connected to one another by means of a soldered connection. Schneidmesser nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass zum Zuführen der Blasluft mindestens ein Schlauch (13) vorgesehen ist, der seitlich des Schneidmessers (1), bezogen auf eine senkrecht zur Schneidfläche (2) angeordnete Seite, mit dem Schneidmesser (1) verbunden ist.Cutting knife according to one of claims 1 to 7, characterized in that at least one hose (13) is provided for supplying the blown air , said hose (13) to the side of the cutting knife (1), with respect to a side arranged perpendicular to the cutting surface (2), with the cutting knife ( 1) is connected. Schneidmesser nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Bohrungen bzw. Luftkanäle (9, 10) parallel zur Schneidfläche (2) angeordnet sind.Cutting knife according to one of claims 1 to 8, characterized in that the bores or air channels (9, 10) are arranged parallel to the cutting surface (2). Verfahren zum Herstellen eines Schneidmessers mit den Merkmalen des Patentanspruchs 1, mit folgenden Schritten: Einbringen von Kanälen (9, 10) in einen Messerträger (5) des Schneidmessers (1), Verbinden von Messerträger (5) und einer Hartmetallschneide (6) des Schneidmessers (1), wobei aufgrund der Anordnung von Messerträger (5) und Hartmetallschneide (6) Blasluftdurchlässe (9, 10) im Schneidmesser (1) gebildet werden, die in die Austrittsöffnungen (11) münden. Method for producing a cutting knife with the features of claim 1, with the following steps: Introducing channels (9, 10) into a knife carrier (5) of the cutting knife (1), Connecting the knife carrier (5) and a hard metal cutting edge (6) of the cutting knife (1), blown air passages (9, 10) being formed in the cutting knife (1) due to the arrangement of the knife carrier (5) and hard metal cutting edge (1), which lead into the outlet openings (11) open. Verfahren nach Anspruch 10, wobei die Hartmetallschneide (6) und der Messerträger (5) durch Löten miteinander verbunden werden.The method of claim 10, wherein the hard metal cutting edge (6) and the Knife carriers (5) are connected to each other by soldering.
EP20040011343 2003-06-18 2004-05-13 Cutting blade and method of making thereof Withdrawn EP1488895A3 (en)

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DE10327754 2003-06-18
DE2003127754 DE10327754A1 (en) 2003-06-18 2003-06-18 Cutting knife and method for its production

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EP1488895A3 EP1488895A3 (en) 2005-06-15

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DK3077309T3 (en) * 2013-11-06 2019-04-23 Jesco Holding Aps System and method for providing ionized air for extruded mold blown web materials and a knife for cutting a tubular extruded mold blown web material into two or more webs
CN105568733A (en) * 2015-12-22 2016-05-11 常熟市复林造纸机械有限公司 Blade for paper making machine
CN105818176A (en) * 2016-04-14 2016-08-03 长葛市全鑫工程机械制造有限公司 Fruit knife and fruit cutting machine
CN109531665B (en) * 2018-10-30 2021-03-26 江门思味园食品有限公司 Prevent slicer that section glues sword
US11027941B2 (en) * 2019-02-14 2021-06-08 Product Solutions Int'l, LLC Slabbing machine

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