EP1184080B1 - Cutting tool for disintegrators - Google Patents

Cutting tool for disintegrators Download PDF

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Publication number
EP1184080B1
EP1184080B1 EP01127043A EP01127043A EP1184080B1 EP 1184080 B1 EP1184080 B1 EP 1184080B1 EP 01127043 A EP01127043 A EP 01127043A EP 01127043 A EP01127043 A EP 01127043A EP 1184080 B1 EP1184080 B1 EP 1184080B1
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EP
European Patent Office
Prior art keywords
cutting
cutting tool
tool
tool according
face
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Expired - Lifetime
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EP01127043A
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German (de)
French (fr)
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EP1184080A1 (en
Inventor
Bernd Päper
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PAEPER, BERND
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Individual
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B02C18/145—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers with knives spaced axially and circumferentially on the periphery of a cylindrical rotor unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/14—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C18/00—Disintegrating by knives or other cutting or tearing members which chop material into fragments
    • B02C18/06—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives
    • B02C18/16—Details
    • B02C18/18—Knives; Mountings thereof

Definitions

  • the invention relates to cutting tools for crushing machines and a crushing machine with such cutting tools.
  • Such a crusher is from the DE 42 42 740 A1 known.
  • This crushing machine has a cutting shaft which is equipped with cutting tools.
  • the cutting tools form sections projecting beyond the surface of the cutting shaft.
  • at least one cutting plate is arranged adjacent to the cutting shaft, the cutting side of which is formed complementary to the projecting over the surface of the cutting shaft portions of the cutting tools.
  • Fig. 1 this crusher is shown in cross section in the region of the cutting shaft 1.
  • Fig. 2 shows a plan view of a portion of the cutting shaft 1 with the cutting tools used in this case 2.
  • the cutting shaft 1 is a solid shaft which is rotatably supported about its longitudinal axis and driven.
  • the cutting plate 3 Adjacent to the circumference of the cutting shaft 1, the cutting plate 3, two Nachismebalken 4 and serving as Abstreifbalken 5 further cutting plate are arranged, which are each complementary to the surface of the shaft and cooperate with this as a counter-cutting element.
  • the Nachtrebalken 4 are held by U-shaped guide elements 6 and their distance from the cutting shaft 1 can be adjusted by means of screws 7.
  • a sieve 8 is provided in the region between the cutting plate 3 and the stripper bar 5, which is fastened to reinforcing rings 9.
  • the shaft 1 engages in a loading space and takes to shredded material in an intermediate space 10 between the shaft 1 and the wire 8 with.
  • the over the surface of the shaft 1 protruding cutting tools 2 cause the entrainment of the material to be shredded, wherein when passing the cutting plate 3 and the Nachismebalken 4 a counter cut is effected, whereby the material to be crushed is cut or machined.
  • the material is crushed into granules until the grain size is so small that the grains fall through the sieve into a collecting container.
  • the cutting tools 2 used in this case are elongated and have either a square or circular cross-section.
  • the recesses 11 are aligned transversely to the longitudinal axis of the cutting shaft 1 and formed so that the cutting tools 2 protrude with their pointing in the direction of rotation 12 end face 13 on the surface or lateral surface of the cutting shaft 1 and supported with their counter to the direction of rotation 12 facing end face 13 against a recess 11 formed by the bearing surface 14.
  • the recess 11 is formed in cross-section V-shaped with two inclined support surfaces 15, so that the mold inserted into the recess 11 2 stores positively in the recess.
  • the recesses 11 are groove-shaped with a U-shaped cross-section, so that the cutting tool 2 stores completely positive fit in the recess.
  • the square in cross-section blades are arranged diagonally upright standing on the shaft 1 and form a cutting edge 16 with the shape of an upwardly projecting cutting tip 17th
  • the DE 94 21 212 U1 describes a cutting tool for crushing machines with a cutting shaft, wherein the cutting shaft has a number of V-shaped recesses for receiving the cutting tools and wherein in each case a cutting tool can be inserted and fastened in one of the recesses, wherein one or more lateral surfaces of the cutting tool form a cutting edge.
  • the cutting tool is a one-piece knife, which is inserted into the V-shaped recess of the cutting shaft and is attached to a designated blade carrier.
  • the knife carrier is also used in each case in one of the V-shaped recesses and firmly connected to the cutting shaft, in particular welded. If the blade is worn, it will be completely replaced.
  • the object of the invention is to provide cutting tools that enable the use of a cutting machine with a cutting shaft for the comminution of different materials at high throughput and the creation of a high efficiency crusher.
  • An underlying principle of the invention is the formation of cutting tools with spatial shapes that can be used and fastened in uniform, preferably in cross-section V-shaped recesses and having cutting edges of different shape and / or size or type.
  • the cutting tools 2 ( Fig.3G, 3I to 3L ) are one-piece, elongated metal body with two mutually parallel end or cutting surfaces 13 and the end faces 13 connecting and aligned perpendicular to the end faces side or lateral surfaces 20.
  • the spatial forms of these cutting tools 2 thus each form a straight cylinder with different cross-sectional shapes.
  • the cross-sectional shape of the cutting tools 2 thus matches the shape of their end faces 13.
  • the cutting tools 2 have an introduced in the longitudinal center, vertical bore 21 which passes through the cutting tool 2.
  • the cutting tools are fastened by means of a screw (not shown) in the recesses 11 of the cutting shaft 1, wherein the recesses 11, which are preferably V-shaped in cross-section, centrally have a vertical threaded bore into which the screw engages.
  • the bore 21 of a such cutting tool is provided at its upper end with a recess 22 for receiving a screw head. Is the cutting tool 2 can be turned about a horizontal transverse axis 23 ( Fig. 3A ), the bore 21 has such a recess 22 at both ends.
  • the cross-sectional shape of the cutting tools 2 has an upper edge 24 above the horizontal transverse axis 23 and a lower edge 25 below the horizontal transverse axis.
  • the lower edge 25 of these cutting tools 2 is formed tapering downwards, wherein it is tapered or arcuate, so that the cutting tools 2 can be used without tilting about its horizontal transverse axis 23 in the V-shaped recess 11.
  • the lower portion of the cross-sectional shape may also be formed with another shape. It is essential that this lower portion of the cross-sectional shape forms a bearing portion 26 for tilt-free storage in uniform recesses 11, in which the bearing portion 26 of the cutting tools 2 is adapted to the uniform shape of the recesses 11 of a cutting shaft accordingly.
  • the recess 11 may be a rectangular in cross-section groove into which a cutting tool 2 can be used without tilting with a suitably adapted shape storage area. Due to the spatial shape adaptation to the uniform recesses 11 different cutting tools 2, it is possible to replace them without great technical effort.
  • the length of the cutting tools 2 is dimensioned so that they rest in the recess 11 of the cutting shaft 1 with its counter to the direction of rotation 12 facing end face 13 on the contact surface 14 of the recess 11, so that the cutting tool 2 is fixed in position in the longitudinal direction.
  • the height H of the cutting tool 2 that is, the distance between the lowest point of the lower edge 24 and the highest point of the upper edge 25 defines the projection of the cutting edge sixteenth firmly over the lateral surface of the cutting shaft 1.
  • a small supernatant causes a thin chip in operation and a large overhang a correspondingly thicker chip.
  • Fig. 3A shows a cutting tool 2 of known square cross section and a single cutting tip 17 per cutting edge 16. This cutting tool with square cross section has the height H.
  • the upper edge 24 of the cross-sectional area or the cutting edge 16 may also be formed in a zigzag shape with two relatively close to each other tips 27, whereby the throughput of the material to be crushed compared to the use of a cutting tool 2 with a single tip is significantly increased.
  • This cutting tool 2 is particularly suitable for the comminution of fibrous material.
  • Cutting tools for comminuting homogeneous, relatively soft material preferably have a straight, horizontal cutting edge 16, which preferably extends over the entire width of the cutting tool 2, so that very wide chips are lifted.
  • cutting tools 2 are provided with cutting edges 16 in the form of blunt tips 29 (FIG. Fig. 3G ) or with arcuate cutting edges ( Fig. 3I to 3L ), wherein the width of the blunt tip 29 and the radius of the arcuate cutting edge 30 can be varied accordingly.
  • the cutting tools 2 with blunt tip 29 and with a small radius having arcuate cutting edge 30 are preferably formed symmetrically about a horizontal plane, so that they can be used quadruple by turning around the horizontal and vertical transverse axis 23 and 32 respectively.
  • the symmetrical cutting tools 2 with a curved cutting edge 30 thus have a circular or oval cross-section with a larger projection.
  • the end face 13 is provided with a hollow ground 33 (FIG. Fig. 5A 5), which is inserted adjacent to the cutting edge 16 is formed.
  • a planar area 34 is left, so that the support of the cutting tool 2 is secured to the contact surface 14 in the recess 11.
  • FIG. 5A and 5B illustrated cutting tool 2 with hollow grinding 33 has a square cross-section.
  • Such a hollow section 2 can also be at the end faces 13 of the in the Fig. 3A .
  • 3G, 3I to 3L shown cutting tools are introduced accordingly.
  • the cutting tool 2 is designed in several parts, with a cutting tool body 35 and one or two cutting plates 36 (FIG. FIGS. 6A to 7C ).
  • the cutting tool body 35 is an elongate, one-piece metal body having a square cross section, two end surfaces 13 a and side surfaces 20.
  • the length of the cutting tool body 35 is slightly shorter than that in the Fig. 3A, 3G, 3I to 3L 2.
  • the cutting tool body 35 is provided in the same way with the vertical bore 21 for attachment in the recess 11.
  • end faces 13a At the end faces 13a centrally a horizontal threaded bore 38 is introduced, in which a screw for fixing a cutting plate 36 can engage.
  • the end faces 13a have a contoured surface with two cross-shaped grooves 37, each extending between the tips of the end faces 13a.
  • the cutting plates 36 are thin metal plates, which may have a corresponding square shape as the end faces 13 a of the tool body 35. In the center of the cutting plate 36, a hole 38 a is inserted, which can be penetrated by a fastening screw. On their back they have crosswise arranged webs 39, which are spatially adapted to the grooves 37 of the end faces 13a, so that the cutting plate 36 can be fixed positively and rotationally fixed to the end faces 13a of the cutting body 35.
  • the existing of the cutting tool body 35 and the cutting blade 36 cutting tool 2 thus has the same spatial shape and the same dimensions as that in Fig. 3A shown one-piece cutting tool 2. All four tips of the cutting tips 36 can be used as a cutting tip 39, so that a cutting tool 2 with two cutting tips 36 can be used eight times.
  • cutting plate 36 with the in the Fig. 3A, 3G, 3I to 3L shown space shapes are attached to the cutting tool body, so that this variety of shapes of the cutting is ensured in the multi-part cutting tool 2.
  • the cutting plate 36 may be provided according to the invention with a hollow grinding.
  • the performance of a crushing machine can be significantly increased. Due to the size of the holes of the screen 8, the grain size of the final granulate. The inventors found that in unfavorable proportions, such as large protrusion of the cutting tool and small hole opening on the screen 8, the material to be crushed very often through the countercut between the cutting tool 2 and the cutting plate 3 and the Nachismebalken 4 must be performed until it can pass through the perforated screen. This reduces throughput and increases frictional heat and tool wear.
  • the crushing machines can therefore be provided with different sets of cutting tools and correspondingly shaped cutting plates 3 and 4 Vietnamesebalken, the crushing machines can be easily adapted by replacing the cutting tools 2 and the corresponding cutting plates 3 and 4 Nachschnittbalken to the material to be shredded.
  • the sets of cutting tools 2 differ from each other in the shape and / or the size or the height H of the cutting tools.
  • the crushers can have both cross-section round and polygonal cutting waves.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Shovels (AREA)
  • Milling Processes (AREA)
  • Working Measures On Existing Buildindgs (AREA)

Abstract

The cutting surface is hollow-edged adjacent to the cutting edge and the cutting tool (2) is off-square so the cutting edge deviates from the section of a square tool in shape on the cutter shaft (1). The tool (2) fixed in the shaft (1) opening (11) projects from the shaft surface and the tool cutting edge is wider than a single point or has two points in which case the edge comes in zee form. This cutting edge can also be horizontally straight or again forms a truncated tip or is arcuate. The length of the tool (2) is such that its rear face (14) in the rotation sense bears on the surface (13) of the shaft hole (11) and so locates the tool lengthways.

Description

Die Erfindung betrifft Schneidwerkzeuge für Zerkleinerungsmaschinen sowie eine Zerkleinerungsmaschine mit derartigen Schneidwerkzeugen.The invention relates to cutting tools for crushing machines and a crushing machine with such cutting tools.

Eine solche Zerkleinerungsmaschine ist aus der DE 42 42 740 A1 bekannt. Diese Zerkleinerungsmaschine weist eine Schneidwelle auf, die mit Schneidwerkzeugen bestückt ist. Die Schneidwerkzeuge bilden über die Oberfläche der Schneidwelle hinausragende Abschnitte. In der Zerkleinerungsmaschine ist angrenzend an die Schneidwelle mindestens eine Schneidplatte angeordnet, deren Schnittseite komplementär zu den über die Oberfläche der Schneidwelle hinausragenden Abschnitten der Schneidwerkzeuge ausgebildet ist.Such a crusher is from the DE 42 42 740 A1 known. This crushing machine has a cutting shaft which is equipped with cutting tools. The cutting tools form sections projecting beyond the surface of the cutting shaft. In the crushing machine, at least one cutting plate is arranged adjacent to the cutting shaft, the cutting side of which is formed complementary to the projecting over the surface of the cutting shaft portions of the cutting tools.

In Fig. 1 ist diese Zerkleinerungsmaschine im Querschnitt im Bereich der Schneidwelle 1 dargestellt. Fig. 2 zeigt eine Draufsicht auf einen Bereich der Schneidwelle 1 mit den hierbei verwendeten Schneidwerkzeugen 2. Die Schneidwelle 1 ist eine Vollwelle, die um ihre Längsachse drehbar gelagert und antreibbar ist.In Fig. 1 this crusher is shown in cross section in the region of the cutting shaft 1. Fig. 2 shows a plan view of a portion of the cutting shaft 1 with the cutting tools used in this case 2. The cutting shaft 1 is a solid shaft which is rotatably supported about its longitudinal axis and driven.

Angrenzend an den Umfang der Schneidwelle 1 sind die Schneidplatte 3, zwei Nachschnittbalken 4 und eine als Abstreifbalken 5 dienende weitere Schneidplatte angeordnet, die jeweils komplementär zu der Oberfläche der Welle ausgebildet sind und mit dieser als Gegenschnittelement zusammenwirken. Die Nachschnittbalken 4 werden von U-förmigen Führungselementen 6 gehalten und deren Abstand zur Schneidwelle 1 kann mittels Stellschrauben 7 verstellt werden.Adjacent to the circumference of the cutting shaft 1, the cutting plate 3, two Nachschnittbalken 4 and serving as Abstreifbalken 5 further cutting plate are arranged, which are each complementary to the surface of the shaft and cooperate with this as a counter-cutting element. The Nachschnittbalken 4 are held by U-shaped guide elements 6 and their distance from the cutting shaft 1 can be adjusted by means of screws 7.

Unterhalb der Schneidwelle 1 ist im Bereich zwischen der Schneidplatte 3 und dem Abstreifbalken 5 ein Sieb 8 vorgesehen, das an Verstärkungsringen 9 befestigt ist. Mit dem vom Sieb 8 abgewandten Bereich greift die Welle 1 in einen Beschickungsraum ein und nimmt zu zerkleinerndes Material in einen Zwischenraum 10 zwischen der Welle 1 und dem Sieb 8 mit. Die über die Oberfläche der Welle 1 vorstehenden Schneidwerkzeuge 2 bewirken die Mitnahme des zu zerkleinernden Materials, wobei beim Vorbeigang an der Schneidplatte 3 bzw. den Nachschnittbalken 4 ein Gegenschnitt bewirkt wird, wodurch das zu zerkleinernde Material zerschnitten bzw. zerspant wird. Durch einen wiederholten Gegenschnitt an der Schneidplatte 3 und den Nachschnittbalken 4 wird das Material zu Granulat zerkleinert, bis dessen Korngröße so klein ist, daß die Körner durch das Sieb hindurch in einen Auffangbehälter fallen.Below the cutting shaft 1, a sieve 8 is provided in the region between the cutting plate 3 and the stripper bar 5, which is fastened to reinforcing rings 9. With the area facing away from the screen 8, the shaft 1 engages in a loading space and takes to shredded material in an intermediate space 10 between the shaft 1 and the wire 8 with. The over the surface of the shaft 1 protruding cutting tools 2 cause the entrainment of the material to be shredded, wherein when passing the cutting plate 3 and the Nachschnittbalken 4 a counter cut is effected, whereby the material to be crushed is cut or machined. By a repeated countercut on the cutting plate 3 and the Nachschnittbalken 4, the material is crushed into granules until the grain size is so small that the grains fall through the sieve into a collecting container.

Die hierbei verwendeten Schneidwerkzeuge 2 sind länglich ausgebildet und weisen entweder einen quadratischen oder kreisförmigen Querschnitt auf. Die Schneidwerkzeuge 2 lagern in in die Schneidwelle 1 eingebrachten Ausnehmungen 11. Die Ausnehmungen 11 sind quer zur Längsachse der Schneidwelle 1 ausgerichtet und so ausgebildet, daß die Schneidwerkzeuge 2 mit ihrer in Drehrichtung 12 zeigenden Stirnfläche 13 über die Oberfläche bzw. Mantelfläche der Schneidwelle 1 vorstehen und mit ihrer entgegen der Drehrichtung 12 zeigenden Stirnfläche 13 gegen eine durch die Ausnehmung 11 gebildete Anlagefläche 14 abstützen.The cutting tools 2 used in this case are elongated and have either a square or circular cross-section. The recesses 11 are aligned transversely to the longitudinal axis of the cutting shaft 1 and formed so that the cutting tools 2 protrude with their pointing in the direction of rotation 12 end face 13 on the surface or lateral surface of the cutting shaft 1 and supported with their counter to the direction of rotation 12 facing end face 13 against a recess 11 formed by the bearing surface 14.

Zur Aufnahme der im Querschnitt quadratischen Schneidwerkzeuge 2 ist die Ausnehmung 11 im Querschnitt V-förmig mit zwei schräg gestellten Auflageflächen 15 ausgebildet, so daß das in die Ausnehmung 11 eingesetzte Formwerkzeug 2 formschlüssig in der Ausnehmung lagert. Zur Aufnahme der im Querschnitt kreisförmigen Schneidwerkzeuge 2 sind die Ausnehmungen 11 rillenförmig mit U-förmigem Querschnitt ausgebildet, so daß auch das Schneidwerkzeug 2 vollständig formschlüssig in der Ausnehmung lagert.For receiving the cross-sectionally square cutting tools 2, the recess 11 is formed in cross-section V-shaped with two inclined support surfaces 15, so that the mold inserted into the recess 11 2 stores positively in the recess. To accommodate the circular cross-section cutting tools 2, the recesses 11 are groove-shaped with a U-shaped cross-section, so that the cutting tool 2 stores completely positive fit in the recess.

Die im Querschnitt quadratischen Messer sind diagonal hochkant stehend auf der Welle 1 angeordnet und bilden eine Schneidkante 16 mit der Form einer nach oben vorstehenden Schneidspitze 17.The square in cross-section blades are arranged diagonally upright standing on the shaft 1 and form a cutting edge 16 with the shape of an upwardly projecting cutting tip 17th

Die DE 94 21 212 U1 beschreibt ein Schneidwerkzeug für Zerkleinerungsmaschinen mit einer Schneidwelle, wobei die Schneidwelle eine Anzahl von V-förmigen Ausnehmungen zur Aufnahme der Schneidwerkzeuge aufweist und wobei jeweils ein Schneidwerkzeug in einer der Ausnehmungen einsetzbar und befestigbar ist, wobei eine oder mehrere Mantelflächen des Schneidwerkzeuges eine Schneidkante bilden. Das Schneidwerkzeug ist ein einteilig ausgebildetes Messer, das in die V-förmige Ausnehmung der Schneidwelle eingesetzt ist und an einem dafür vorgesehenen Messerträger befestigt ist. Der Messerträger ist dazu ebenfalls in jeweils eine der V-förmigen Ausnehmungen eingesetzt und fest mit der Schneidwelle verbunden, insbesondere verschweißt. Bei Verschleiß des Messers wird dieses komplett ausgewechselt.The DE 94 21 212 U1 describes a cutting tool for crushing machines with a cutting shaft, wherein the cutting shaft has a number of V-shaped recesses for receiving the cutting tools and wherein in each case a cutting tool can be inserted and fastened in one of the recesses, wherein one or more lateral surfaces of the cutting tool form a cutting edge. The cutting tool is a one-piece knife, which is inserted into the V-shaped recess of the cutting shaft and is attached to a designated blade carrier. The knife carrier is also used in each case in one of the V-shaped recesses and firmly connected to the cutting shaft, in particular welded. If the blade is worn, it will be completely replaced.

In der US 4,164,329 ist ein mit einem rillenförmigen Hohlschliff versehenes Schneidwerkzeug für eine Zerkleinerungsmaschine beschrieben, wobei das Schneidwerkzeug in eine nutförmige Ausnehmung einer Schneidwelle eingesetzt ist und das Schneidwerkzeug einteilig ausgeführt ist. Durch die spezielle runde Scheibenform des Schneidwerkzeuges mit der umlaufenden Rille in der stirnseitigen Schneidfläche soll die Standzeit erhöht und ein Span besserer Größe und Form produziert werden.In the US 4,164,329 is a provided with a grooved hollow cutting tool for a crushing machine, wherein the cutting tool is inserted into a groove-shaped recess of a cutting shaft and the cutting tool is made in one piece. The special round disc shape of the cutting tool with the circumferential groove in the face-side cutting surface to increase the life and produce a chip better size and shape.

Aufgabe der Erfindung ist die Schaffung von Schneidwerkzeugen, die die Verwendung einer Zerkleinerungsmaschine mit Schneidwelle zur Zerkleinerung unterschiedlicher Materialien bei hohem Durchsatz ermöglichen sowie die Schaffung einer Zerkleinerungsmaschine mit hoher Leistungsfähigkeit.The object of the invention is to provide cutting tools that enable the use of a cutting machine with a cutting shaft for the comminution of different materials at high throughput and the creation of a high efficiency crusher.

Diese Aufgaben werden durch Schneidwerkzeuge mit den Merkmalen des Anspruchs 1 und eine Zerkleinerungsmaschine mit den Merkmalen des Anspruchs 19 gelöst.These objects are achieved by cutting tools having the features of claim 1 and a crusher having the features of claim 19.

Ein der Erfindung zugrundeliegendes Prinzip ist die Ausbildung von Schneidwerkzeugen mit Raumformen, die in einheitliche, vorzugsweise im Querschnitt V-förmige Ausnehmungen einsetzbar und befestigbar sind und Schneidkanten unterschiedlicher Form und/oder Größe bzw. Art aufweisen.An underlying principle of the invention is the formation of cutting tools with spatial shapes that can be used and fastened in uniform, preferably in cross-section V-shaped recesses and having cutting edges of different shape and / or size or type.

Hierdurch wird es möglich, alleine durch Austausch des Schneidwerkzeuges und einer entsprechend angepaßten Schneidplatte den Durchsatz einer Zerkleinerungsmaschine zu optimieren und die Kornform des hierbei erzeugten Granulats einzustellen.This makes it possible to optimize the throughput of a crusher alone by replacing the cutting tool and a correspondingly adapted cutting plate and adjust the grain shape of the granules produced in this case.

Die Erfindung wird beispielhaft anhand der Zeichnungen näher erläutert. Es zeigen:

Fig. 1
eine aus der DE 42 42 740 A1 bekannte Zerkleinerungsmaschine im Querschnitt im Bereich der Schneidwelle,
Fig. 2
eine Draufsicht auf einen Bereich der Schneidwelle, die bei der in Fig. 1 gezeigten Zerkleinerungsmaschine verwendet wird,
Fig. 3A
ein Schneidwerkzeug im Querschnitt mit quadratischer Querschnittsform,
Fig. 3G, 3I bis 3L
jeweils ein Schneidwerkzeug im Querschnitt mit unterschiedlichen Querschnittsformen,
Fig. 4
eine Draufsicht auf ein Schneidwerkzeug,
Fig. 5A, 5B
eine Draufsicht und eine Seitenansicht eines Schneidwerkzeuges mit Hohlschliff,
Fig. 6A
eine Frontansicht im Teilschnitt eines Schneidwerkzeugkörpers für ein Schneidwerkzeug mit auswechselbaren Schneidplättchen, gemäß der Erfindung,
Fig. 6B
eine Seitenansicht eines Schneidwerkzeuges mit auswechselbaren Schneidplättchen, gemäß der Erfindung,
Fig. 7A bis 7C
jeweils eine Rück-, Seiten- und Frontansicht eines Schneidplättchens.
The invention will be explained in more detail by way of example with reference to the drawings. Show it:
Fig. 1
one from the DE 42 42 740 A1 known crusher in cross-section in the region of the cutting shaft,
Fig. 2
a plan view of a portion of the cutting shaft, which in the in Fig. 1 used crusher is used,
Fig. 3A
a cutting tool in cross-section with a square cross-sectional shape,
Figs. 3G, 3I to 3L
one cutting tool in cross-section with different cross-sectional shapes,
Fig. 4
a top view of a cutting tool,
Fig. 5A, 5B
a top view and a side view of a cutting tool with hollow grinding,
Fig. 6A
1 is a front view in partial section of a cutting tool body for a cutting tool with interchangeable cutting tips, according to the invention,
Fig. 6B
a side view of a cutting tool with replaceable cutting plate, according to the invention,
Figs. 7A to 7C
each a back, side and front view of a cutting plate.

Die Schneidwerkzeuge 2 (Fig.3G, 3I bis 3L) sind einteilige, längliche Metallkörper mit zwei zueinander parallel angeordneten Stirn- bzw. Schneidflächen 13 und die Stirnflächen 13 verbindenden und senkrecht zu den Stirnflächen ausgerichteten Seiten- bzw. Mantelflächen 20. Die Raumformen dieser Schneidwerkzeuge 2 bilden somit jeweils einen geraden Zylinder mit unterschiedlichen Querschnittsformen. Die Querschnittsform der Schneidwerkzeuge 2 stimmt somit mit der Form ihrer Stirnflächen 13 überein.The cutting tools 2 ( Fig.3G, 3I to 3L ) are one-piece, elongated metal body with two mutually parallel end or cutting surfaces 13 and the end faces 13 connecting and aligned perpendicular to the end faces side or lateral surfaces 20. The spatial forms of these cutting tools 2 thus each form a straight cylinder with different cross-sectional shapes. The cross-sectional shape of the cutting tools 2 thus matches the shape of their end faces 13.

Die Schneidwerkzeuge 2 weisen eine in der Längsmitte eingebrachte, vertikale Bohrung 21 auf, die das Schneidwerkzeug 2 durchquert. Die Schneidwerkzeuge werden mittels einer Schraube (nicht dargestellt) in den Ausnehmungen 11 der Schneidwelle 1 befestigt, wobei die Ausnehmungen 11, die im Querschnitt vorzugsweise V-förmig ausgebildet sind, zentral eine vertikale Gewindebohrung aufweisen, in die die Schraube eingreift. Die Bohrung 21 eines solchen Schneidwerkzeuges ist an ihrem oberen Ende mit einer Ausnehmung 22 zur Aufnahme eines Schraubenkopfes versehen. Ist das Schneidwerkzeug 2 um eine horizontale Querachse 23 wendbar (Fig. 3A), so weist die Bohrung 21 an beiden Enden eine solche Ausnehmung 22 auf.The cutting tools 2 have an introduced in the longitudinal center, vertical bore 21 which passes through the cutting tool 2. The cutting tools are fastened by means of a screw (not shown) in the recesses 11 of the cutting shaft 1, wherein the recesses 11, which are preferably V-shaped in cross-section, centrally have a vertical threaded bore into which the screw engages. The bore 21 of a such cutting tool is provided at its upper end with a recess 22 for receiving a screw head. Is the cutting tool 2 can be turned about a horizontal transverse axis 23 ( Fig. 3A ), the bore 21 has such a recess 22 at both ends.

Die Querschnittsform der Schneidwerkzeuge 2 weist oberhalb der horizontalen Querachse 23 einen oberen Rand 24 und unterhalb der horizontalen Querachse einen unteren Rand 25 auf. Der untere Rand 25 dieser Schneidwerkzeuge 2 ist nach unten hin verjüngend ausgebildet, wobei er spitz zulaufend oder bogenförmig ausgeführt ist, so daß die Schneidwerkzeuge 2 um ihre horizontale Querachse 23 kippfrei lagernd in die V-förmige Ausnehmung 11 eingesetzt werden können.The cross-sectional shape of the cutting tools 2 has an upper edge 24 above the horizontal transverse axis 23 and a lower edge 25 below the horizontal transverse axis. The lower edge 25 of these cutting tools 2 is formed tapering downwards, wherein it is tapered or arcuate, so that the cutting tools 2 can be used without tilting about its horizontal transverse axis 23 in the V-shaped recess 11.

Der untere Bereich der Querschnittsform kann auch mit einer anderen Form ausgebildet sein. Wesentlich ist, daß dieser untere Bereich der Querschnittsform einen Lagerbereich 26 zur kippfreien Lagerung in einheitlichen Ausnehmungen 11 bildet, in dem der Lagerbereich 26 der Schneidwerkzeuge 2 an die einheitliche Form der Ausnehmungen 11 einer Schneidwelle entsprechend angepaßt ist. So kann beispielsweise die Ausnehmung 11 eine im Querschnitt rechteckige Nut sein, in die mit einem entsprechend formmäßig angepaßten Lagerbereich ein Schneidwerkzeug 2 kippfrei eingesetzt werden kann. Durch die raumformmäßige Anpassung an die einheitlichen Ausnehmungen 11 unterschiedlicher Schneidwerkzeuge 2 ist es möglich, diese ohne großen technischen Aufwand auszutauschen.The lower portion of the cross-sectional shape may also be formed with another shape. It is essential that this lower portion of the cross-sectional shape forms a bearing portion 26 for tilt-free storage in uniform recesses 11, in which the bearing portion 26 of the cutting tools 2 is adapted to the uniform shape of the recesses 11 of a cutting shaft accordingly. Thus, for example, the recess 11 may be a rectangular in cross-section groove into which a cutting tool 2 can be used without tilting with a suitably adapted shape storage area. Due to the spatial shape adaptation to the uniform recesses 11 different cutting tools 2, it is possible to replace them without great technical effort.

Die Länge der Schneidwerkzeuge 2 ist so bemessen, daß sie in der Ausnehmung 11 der Schneidwelle 1 mit ihrer entgegen der Drehrichtung 12 zeigenden Stirnfläche 13 an der Anlagefläche 14 der Ausnehmung 11 anliegen, so daß das Schneidwerkzeug 2 in Längsrichtung lagefixiert ist.The length of the cutting tools 2 is dimensioned so that they rest in the recess 11 of the cutting shaft 1 with its counter to the direction of rotation 12 facing end face 13 on the contact surface 14 of the recess 11, so that the cutting tool 2 is fixed in position in the longitudinal direction.

Die an der Schneidwelle 1 über die Oberfläche der Schneidwelle vorstehende Kante zwischen der in Drehrichtung 12 zeigenden Stirnfläche und der angrenzenden Mantelfläche 20 bzw. den angrenzenden Mantelflächen 20 bildet die Schneidkante 16. Die Höhe H des Schneidwerkzeuges 2, das heißt der Abstand zwischen dem tiefsten Punkt des unteren Randes 24 und dem höchsten Punkt des oberen Randes 25 legt den Überstand der Schneidkante 16 über die Mantelfläche der Schneidwelle 1 fest. Ein kleiner Überstand bewirkt im Betrieb einen dünnen Span und ein großer Überstand einen entsprechend dickeren Span.The protruding on the cutting shaft 1 over the surface of the cutting shaft edge between the direction of rotation 12 facing The height H of the cutting tool 2, that is, the distance between the lowest point of the lower edge 24 and the highest point of the upper edge 25 defines the projection of the cutting edge sixteenth firmly over the lateral surface of the cutting shaft 1. A small supernatant causes a thin chip in operation and a large overhang a correspondingly thicker chip.

Fig. 3A zeigt ein Schneidwerkzeug 2 mit bekanntem quadratischem Querschnitt und einer einzigen Schneidspitze 17 pro Schneidkante 16. Dieses Schneidwerkzeug mit quadratischem Querschnitt weist die Höhe H auf. Fig. 3A shows a cutting tool 2 of known square cross section and a single cutting tip 17 per cutting edge 16. This cutting tool with square cross section has the height H.

Der obere Rand 24 der Querschnittsfläche bzw. die Schneidkante 16 kann auch zick-zack-förmig mit zwei relativ nahe beieinander liegenden Spitzen 27 ausgebildet sein, wodurch der Durchsatz des zu zerkleinernden Materials gegenüber der Verwendung eines Schneidwerkzeuges 2 mit einer einzigen Spitze deutlich erhöht wird. Dieses Schneidwerkzeug 2 ist insbesondere zum Zerkleinern von faserigem Material geeignet.The upper edge 24 of the cross-sectional area or the cutting edge 16 may also be formed in a zigzag shape with two relatively close to each other tips 27, whereby the throughput of the material to be crushed compared to the use of a cutting tool 2 with a single tip is significantly increased. This cutting tool 2 is particularly suitable for the comminution of fibrous material.

Schneidwerkzeuge zur Zerkleinerung von homogenem, relativ weichem Material weisen vorzugsweise eine geradlinige, horizontale Schneidkante 16 auf, die sich vorzugsweise über die gesamte Breite des Schneidwerkzeuges 2 erstreckt, so daß sehr breite Spane abgehoben werden.Cutting tools for comminuting homogeneous, relatively soft material preferably have a straight, horizontal cutting edge 16, which preferably extends over the entire width of the cutting tool 2, so that very wide chips are lifted.

Zur Erzeugung von körnigem Granulat werden Schneidwerkzeuge 2 mit Schneidkanten 16 in der Form von stumpfen Spitzen 29 (Fig. 3G) bzw. mit bogenförmigen Schneidkanten (Fig. 3I bis 3L) verwendet, wobei die Breite der stumpfen Spitze 29 bzw. der Radius der bogenförmigen Schneidkante 30 entsprechend variiert werden kann. Die Schneidwerkzeuge 2 mit stumpfer Spitze 29 bzw. mit einen kleinen Radius aufweisenden bogenförmiger Schneidkante 30 sind vorzugsweise symmetrisch um eine horizontale Ebene ausgebildet, so daß sie durch Wenden um die horizontale und die vertikale Querachse 23 bzw. 32 vierfach verwendet werden können. Die symmetrischen Schneidwerkzeuge 2 mit bogenförmiger Schneidkante 30 weisen somit einen kreisförmigen bzw. bei größerem Überstand ovalen Querschnitt auf.To produce granular granules, cutting tools 2 are provided with cutting edges 16 in the form of blunt tips 29 (FIG. Fig. 3G ) or with arcuate cutting edges ( Fig. 3I to 3L ), wherein the width of the blunt tip 29 and the radius of the arcuate cutting edge 30 can be varied accordingly. The cutting tools 2 with blunt tip 29 and with a small radius having arcuate cutting edge 30 are preferably formed symmetrically about a horizontal plane, so that they can be used quadruple by turning around the horizontal and vertical transverse axis 23 and 32 respectively. The symmetrical cutting tools 2 with a curved cutting edge 30 thus have a circular or oval cross-section with a larger projection.

Erfindungsgemäß ist zur Ausdehnung der Leistungsfähigkeit der Zerkleinerungsmaschine die Stirnfläche 13 mit einem Hohlschliff 33 (Fig. 5A, 5), der angrenzend an der Schneidkante 16 eingebracht wird, ausgebildet. Vorzugsweise wird im zentralen Bereich der Stirnfläche 13 ein ebenflächiger Bereich 34 belassen, so daß die Abstützung des Schneidwerkzeuges 2 an der Anlagefläche 14 in der Ausnehmung 11 sichergestellt ist.According to the invention, in order to extend the efficiency of the comminution machine, the end face 13 is provided with a hollow ground 33 (FIG. Fig. 5A 5), which is inserted adjacent to the cutting edge 16 is formed. Preferably, in the central region of the end face 13 a planar area 34 is left, so that the support of the cutting tool 2 is secured to the contact surface 14 in the recess 11.

Das in Fig. 5A und 5B dargestellte Schneidwerkzeug 2 mit Hohlschliff 33 weist einen quadratischen Querschnitt auf. Ein solcher Hohlschliff 2 kann auch an den Stirnflächen 13 der in den Fig. 3A, 3G, 3I bis 3L dargestellten Schneidwerkzeuge entsprechend eingebracht werden.This in Figs. 5A and 5B illustrated cutting tool 2 with hollow grinding 33 has a square cross-section. Such a hollow section 2 can also be at the end faces 13 of the in the Fig. 3A . 3G, 3I to 3L shown cutting tools are introduced accordingly.

Das erfindungsgemäße Schneidwerkzeug 2 ist mehrteilig ausgebildet, mit einem Schneidwerkzeugkörper 35 und einem oder zwei Schneidplättchen 36 (Fig. 6A bis 7C). Der Schneidwerkzeugkörper 35 ist ein länglicher, einteiliger Metallkörper mit quadratischem Querschnitt, zwei Stirnflächen 13a und Seitenflächen 20. Die Länge des Schneidwerkzeugkörpers 35 ist etwas kürzer als die der in den Fig. 3A, 3G, 3I bis 3L dargestellten Schneidwerkzeuge 2. Der Schneidwerkzeugkörper 35 ist jedoch in gleicher Weise mit der vertikalen Bohrung 21 zur Befestigung in der Ausnehmung 11 versehen.The cutting tool 2 according to the invention is designed in several parts, with a cutting tool body 35 and one or two cutting plates 36 (FIG. FIGS. 6A to 7C ). The cutting tool body 35 is an elongate, one-piece metal body having a square cross section, two end surfaces 13 a and side surfaces 20. The length of the cutting tool body 35 is slightly shorter than that in the Fig. 3A, 3G, 3I to 3L 2. The cutting tool body 35 However, it is provided in the same way with the vertical bore 21 for attachment in the recess 11.

An den Stirnflächen 13a ist zentral eine horizontale Gewindebohrung 38 eingebracht, in der eine Schraube zur Befestigung eines Schneidplättchens 36 eingreifen kann. Die Stirnflächen 13a weisen eine konturierte Oberfläche mit zwei kreuzförmig angeordneten Nuten 37 auf, die sich jeweils zwischen den Spitzen der Stirnflächen 13a erstrecken.At the end faces 13a centrally a horizontal threaded bore 38 is introduced, in which a screw for fixing a cutting plate 36 can engage. The end faces 13a have a contoured surface with two cross-shaped grooves 37, each extending between the tips of the end faces 13a.

Die Schneidplättchen 36 sind dünne Metallplättchen, die eine entsprechend quadratische Form wie die Stirnflächen 13a des Werkzeugkörpers 35 aufweisen können. Im Zentrum der Schneidplättchen 36 ist ein Loch 38a eingebracht, das von einer Befestigungsschraube durchgriffen werden kann. An ihrer Rückseite weisen sie kreuzweise angeordnete Stege 39 auf, die raumformmäßig an die Nuten 37 der Stirnflächen 13a angepaßt sind, so daß die Schneidplättchen 36 formschlüssig und verdrehfest an den Stirnflächen 13a der Schneidwerkzeug körper 35 befestigt werden können.The cutting plates 36 are thin metal plates, which may have a corresponding square shape as the end faces 13 a of the tool body 35. In the center of the cutting plate 36, a hole 38 a is inserted, which can be penetrated by a fastening screw. On their back they have crosswise arranged webs 39, which are spatially adapted to the grooves 37 of the end faces 13a, so that the cutting plate 36 can be fixed positively and rotationally fixed to the end faces 13a of the cutting body 35.

Das aus dem Schneidwerkzeugkörper 35 und dem Schneidplättchen 36 bestehende Schneidwerkzeug 2 weist somit die gleiche Raumform und die gleichen Abmessungen wie das in Fig. 3A dargestellte einteilige Schneidwerkzeug 2 auf. Alle vier Spitzen der Schneidplättchen 36 können als Schneidspitze 39 verwendet werden, so daß ein Schneidwerkzeug 2 mit zwei Schneidplättchen 36 achtfach verwendet werden kann. Zudem können Schneidplättchen 36 mit den in den Fig. 3A, 3G, 3I bis 3L gezeigten Raumformen am Schneidwerkzeugkörper befestigt werden, so daß auch diese Formenvielfalt der Schneiden beim mehrteiligen Schneidwerkzeug 2 gewährleistet ist. Die Schneidplättchen 36 können erfindungsgemäß mit einem Hohlschliff versehen sein.The existing of the cutting tool body 35 and the cutting blade 36 cutting tool 2 thus has the same spatial shape and the same dimensions as that in Fig. 3A shown one-piece cutting tool 2. All four tips of the cutting tips 36 can be used as a cutting tip 39, so that a cutting tool 2 with two cutting tips 36 can be used eight times. In addition, cutting plate 36 with the in the Fig. 3A, 3G, 3I to 3L shown space shapes are attached to the cutting tool body, so that this variety of shapes of the cutting is ensured in the multi-part cutting tool 2. The cutting plate 36 may be provided according to the invention with a hollow grinding.

Mit den erfindungsgemäßen Schneidwerkzeugen kann die Leistungsfähigkeit einer Zerkleinerungsmaschine wesentlich gesteigert werden. Durch die Größe der Löcher des Siebes 8 wird die Korngröße des Endgranulats festgelegt. Die Erfinder stellten fest, daß bei ungünstigen Proportionen, wie z.B. großem Überstand des Schneidwerkzeuges und kleiner Lochöffnung am Sieb 8 das zu zerkleinernde Material sehr oft durch den Gegenschnitt zwischen dem Schneidwerkzeug 2 und der Schneidplatte 3 bzw. den Nachschnittbalken 4 geführt werden muß, bis es durch das Lochsieb ausdringen kann. Hierdurch verringerte sich der Durchsatz, und die Reibungswärme und die Werkzeugabnutzung werden erhöht.With the cutting tools of the invention, the performance of a crushing machine can be significantly increased. Due to the size of the holes of the screen 8, the grain size of the final granulate. The inventors found that in unfavorable proportions, such as large protrusion of the cutting tool and small hole opening on the screen 8, the material to be crushed very often through the countercut between the cutting tool 2 and the cutting plate 3 and the Nachschnittbalken 4 must be performed until it can pass through the perforated screen. This reduces throughput and increases frictional heat and tool wear.

Mit den erfindungsgemäßen Formen der Schneidkante ist eine ideale Anpassung an das zu zerkleinernde Material und die Lochgröße des Siebes möglich, so daß die Korngröße und die Kornform des hierbei erzeugten Granulats gezielt eingestellt werden kann und der Durchsatz bei geringer Werkzeugabnutzung verbessert werden kann. Das Leistungsspektrum einer Zerkleinerungsmaschine kann somit durch die erfindungsgemäßen Schneidwerkzeuge 2 beträchtlich gesteigert werden.With the forms of the cutting edge according to the invention an ideal adaptation to the material to be crushed and the hole size of the screen is possible, so that the grain size and the grain shape of the granules thus produced can be selectively adjusted and the throughput can be improved with low tool wear. The performance of a crushing machine can thus be increased considerably by the cutting tools 2 according to the invention.

Die Zerkleinerungsmaschinen können deshalb mit unterschiedlichen Sätzen von Schneidwerkzeugen und entsprechend geformten Schneidplatten 3 bzw. Nachschnittbalken 4 versehen werden, wobei die Zerkleinerungsmaschinen einfach durch Austausch der Schneidwerkzeuge 2 und der entsprechenden Schneidplatten 3 bzw. Nachschnittbalken 4 an das zu zerkleinernde Material angepaßt werden können. Die Sätze von Schneidwerkzeugen 2 unterscheiden sich untereinander in der Form und/oder der Größe bzw. der Höhe H der Schneidwerkzeuge.The crushing machines can therefore be provided with different sets of cutting tools and correspondingly shaped cutting plates 3 and 4 Nachschnittbalken, the crushing machines can be easily adapted by replacing the cutting tools 2 and the corresponding cutting plates 3 and 4 Nachschnittbalken to the material to be shredded. The sets of cutting tools 2 differ from each other in the shape and / or the size or the height H of the cutting tools.

Die Zerkleinerungsmaschinen können sowohl im Querschnitt runde als auch polygone Schneidwellen aufweisen.The crushers can have both cross-section round and polygonal cutting waves.

Claims (20)

  1. A cutting tool for shredding machines with a cutting shaft, wherein the cutting shaft (1) has a number of recesses (11) of preferably V-shaped cross-section for receiving the cutting tools (2) of preferably square cross-section, and one cutting tool (2) is capable of being inserted and fastened in one of the recesses (11) in each case, and an edge region between an end face (13) forming a cutting face and one or more external faces (20) of the cutting tool (2) forms a cutting edge (16), wherein the cutting tool (2) is formed from a cutting-tool body (35) and at least one cutting plate (36), wherein the cutting-tool body (35) is an elongate, single-piece metallic body of preferably square cross-section and has two end faces (13a) and external faces (20) joining the end faces (13a), wherein the cutting plate (36) is fastened to one of the end faces (13a) so as to rest flat against it, wherein the cutting edge (16) and the end face (13) of the cutting tool (2) are formed on the cutting plate (36), characterized in that the cutting-tool body (35) has a vertical through-bore (21) for fastening in the recess (11) which is arranged both transversely and longitudinally in the centre on the cutting tool (2).
  2. A cutting tool according to Claim 1, characterized in that on at least one of its end faces (13a) the centre of the cutting-tool body (35) has a horizontal threaded bore (38) for receiving a screw for fastening the cutting plate (36), on which is provided a hole (38a) which can be traversed by a fastening screw.
  3. A cutting tool according to Claim 2, characterized in that the hole (38a) has a conical portion tapering towards the cutting-tool body (35).
  4. A cutting tool according to one or more of the preceding Claims, characterized in that the end face (13a) of the cutting-tool body (35), to which the metallic plate is capable of being fastened, is made contoured, wherein the cutting plate (36) is shaped in a complementary manner so that the contours of the end face (13a) and of the cutting plate (36) which engage in one another form a means to prevent turning.
  5. A cutting tool according to Claim 4, characterized in that the end face (13a) of the cutting-tool body (35) is provided with grooves arranged crosswise.
  6. A cutting tool according to any one of the preceding Claims, characterized in that the cutting tool has two cutting plates (36) which are capable of being fastened to the two end faces (13a) of the cutting-tool body (35).
  7. A cutting tool according to any one of the preceding Claims, characterized in that the cutting tool (2) is hardened in the region of its end face (13) which is adjacent to the cutting edge (16).
  8. A cutting tool according to one or more of the preceding Claims, characterized in that a hollow-ground portion (33) is formed adjacent to the cutting edge (16) on the end face (13) of the cutting tool (2).
  9. A cutting tool according to one or more of the preceding Claims, characterized in that in the case of a cutting tool (2) fastened to the cutting shaft (1) the cutting edge (16) projects beyond the external face of the cutting shaft (1), and the cutting edge (16) of the cutting tool (2) has a shape widened with respect to a single tip or a shape with at least two cutting tips.
  10. A cutting tool according to any one of the preceding Claims, characterized in that the cutting edge (16) forms a zigzag shape with two cutting tips.
  11. A cutting tool according to any one of Claims 1 to 9, characterized in that the cutting edge (16) is a horizontal edge extending in a straight line.
  12. A cutting tool according to any one of Claims 1 to 9, characterized in that the cutting edge (16) is in the shape of an obtuse tip (29).
  13. A cutting tool according to any one of Claims 1 to 9, characterized in that the cutting edge (16) is formed in the shape of a curve.
  14. A cutting tool according to Claim 13, characterized in that the cutting tool (2) is made circular or oval in cross-section.
  15. A cutting tool according to any one of Claims 1 to 14, characterized in that a mounting region (26) of the cutting tool (2) is adapted in its cross-sectional shape to the recesses (11) and is preferably made V-shaped in cross-section, so that the cutting tool (2) is capable of being inserted in a tilt-proof manner into one of the recesses (11).
  16. A cutting tool according to any one of Claims 1 to 15, characterized in that the length of the cutting tool (2) is dimensioned in such a way that in one of the recesses (11) of the cutting shaft (1) it rests with its end face (13) - directed towards the rear in the direction of rotation - against an abutment face (14) of the recesses (11), so that the cutting tool (2) is fixed in position in the longitudinal direction.
  17. A cutting tool according to any one of the preceding Claims, characterized in that hollow-ground portions (33) are formed on the two end faces (13) of the cutting tool (2).
  18. A cutting tool according to Claim 17, characterized in that the end faces (13) have a planar region (34) adjacent to one of the hollow-ground portions (33), wherein the planar region (34) is used for supporting the cutting tool (2) on an abutment face (14) of the recess (11).
  19. A shredding machine with a cutting shaft (1) and cutting tools (2) which are fastened on the cutting shaft (1) and which co-operate with a cutting plate (3) or after-cut beam (4), characterized in that the cutting tools (2) are designed in accordance with one or more of the preceding Claims.
  20. A shredding machine according to Claim 19, characterized in that the shredding machine has a plurality of sets of cutting tools (2) and a corresponding cutting plate (3) or after-cut beam (4) in each case, wherein the cutting tools (2) of the individual sets differ in shape and/or in size and height from one another.
EP01127043A 1995-10-04 1996-09-26 Cutting tool for disintegrators Expired - Lifetime EP1184080B1 (en)

Applications Claiming Priority (3)

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DE29515768U 1995-10-04
DE29515768U DE29515768U1 (en) 1995-10-04 1995-10-04 Cutting tool for shredding machines
EP96115497A EP0767004B1 (en) 1995-10-04 1996-09-26 Cutting tool for disintegrators

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EP1184080B1 true EP1184080B1 (en) 2008-11-12

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EP96115497A Expired - Lifetime EP0767004B1 (en) 1995-10-04 1996-09-26 Cutting tool for disintegrators

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JP (1) JPH09187671A (en)
AT (2) ATE413922T1 (en)
DE (3) DE29515768U1 (en)
ES (1) ES2317867T3 (en)

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JPH09187671A (en) 1997-07-22
ATE228888T1 (en) 2002-12-15
DE29515768U1 (en) 1995-12-07
ES2317867T3 (en) 2009-05-01
DE59609944D1 (en) 2003-01-16
EP0767004B1 (en) 2002-12-04
EP0767004A1 (en) 1997-04-09
ATE413922T1 (en) 2008-11-15
DE59611489D1 (en) 2008-12-24
EP1184080A1 (en) 2002-03-06

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