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EP0767004A1 - Outil de coupe pour déchiqueteurs - Google Patents

Outil de coupe pour déchiqueteurs Download PDF

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Publication number
EP0767004A1
EP0767004A1 EP96115497A EP96115497A EP0767004A1 EP 0767004 A1 EP0767004 A1 EP 0767004A1 EP 96115497 A EP96115497 A EP 96115497A EP 96115497 A EP96115497 A EP 96115497A EP 0767004 A1 EP0767004 A1 EP 0767004A1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting tool
edge
shaft
recesses
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.)
Granted
Application number
EP96115497A
Other languages
German (de)
English (en)
Other versions
EP0767004B1 (fr
Inventor
Bernd Päper
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.)
Holz- Metall- Abfall- Recyclingtechnik GmbH
Original Assignee
Holz- Metall- Abfall- Recyclingtechnik GmbH
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 Holz- Metall- Abfall- Recyclingtechnik GmbH filed Critical Holz- Metall- Abfall- Recyclingtechnik GmbH
Priority to EP01127043A priority Critical patent/EP1184080B1/fr
Publication of EP0767004A1 publication Critical patent/EP0767004A1/fr
Application granted granted Critical
Publication of EP0767004B1 publication Critical patent/EP0767004B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 size reduction machines.
  • Such a shredding machine is known from DE 42 42 740 A1.
  • This shredding machine has a cutting shaft that 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 in the comminution machine adjacent to the cutting shaft, the cutting side of which is complementary to the sections of the cutting tools which protrude beyond the surface of the cutting shaft.
  • FIG. 1 shows a plan view of an area of the cutting shaft 1 with the cutting tools 2 used here.
  • the cutting shaft 1 is a solid shaft which is rotatably supported and can be driven about its longitudinal axis.
  • the cutting plate 3 Adjacent to the circumference of the cutting shaft 1, the cutting plate 3, two re-cutting bars 4 and a further cutting plate serving as a stripping bar 5 are arranged, which are each complementary to the surface of the shaft and interact with it as a counter-cutting element.
  • the re-cutting bars 4 are held by U-shaped guide elements 6 and their distance from the cutting shaft 1 can be adjusted by means of set screws 7.
  • a sieve 8 is provided below the cutting shaft 1, in the area between the cutting plate 3 and the stripping bar 5, a sieve 8 is provided, which is attached to reinforcing rings 9. With the area facing away from the sieve 8, the shaft 1 engages in a loading space and takes material to be comminuted into an intermediate space 10 between the shaft 1 and the sieve 8.
  • the cutting tools 2 protruding above the surface of the shaft 1 cause the material to be shredded to be carried along, a counter-cut being effected when passing the cutting plate 3 or the re-cutting bar 4, as a result of which the material to be shredded is cut or machined.
  • the material is crushed into granules until its grain size is so small that the grains fall through the sieve into a collecting container.
  • the cutting tools 2 used here are elongated and have either a square or circular cross section.
  • the cutting tools 2 are mounted in recesses 11 made in the cutting shaft 1.
  • the recesses 11 are aligned transversely to the longitudinal axis of the cutting shaft 1 and are designed such that the cutting tools 2, with their end faces 13 pointing in the direction of rotation 12, project above the surface or lateral surface of the cutting shaft 1 and with its end face 13 pointing counter to the direction of rotation 12, it is supported against a contact surface 14 formed by the recess 11.
  • the recess 11 is V-shaped in cross section with two inclined support surfaces 15, so that the molding tool 2 inserted into the recess 11 is positively supported in the recess.
  • the recesses 11 are formed in a groove-like manner with a U-shaped cross section, so that the cutting tool 2 is also completely positively supported in the recess.
  • the knives which are square in cross section, are arranged on the shaft 1 in an upright diagonal and form a cutting edge 16 with the shape of an upwardly projecting cutting tip 17.
  • the object of the invention is to provide cutting tools which enable the use of a shredding machine with a cutting shaft for shredding different materials at high throughput.
  • the object is achieved by cutting tools with the features of claim 1, 2 or 11, 14.
  • a principle on which the invention is based is the design of cutting tools with three-dimensional shapes which can be inserted and fastened in uniform recesses, preferably V-shaped in cross section, and which have cutting edges of different shape and / or size or type.
  • the cutting tools according to the invention according to a first embodiment are one-piece, elongated metal bodies with two end faces or cutting faces 13 arranged parallel to one another and side faces or lateral faces 20 connecting the end faces 13 and oriented perpendicular to the end faces these cutting tools 2 thus each form a straight cylinder with different cross-sectional shapes.
  • the cross-sectional shape of the cutting tools 2 according to the first embodiment thus corresponds to the shape of their end faces 13.
  • the cutting tools 2 have a vertical bore 21, which is made in the longitudinal center and passes through the cutting tool 2.
  • the cutting tools are fastened in the recesses 11 of the cutting shaft 1 by means of a screw (not shown), the recesses 11, which are preferably V-shaped in cross-section, centrally having a vertical threaded hole 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. If the cutting tool 2 can be turned around a horizontal transverse axis 23 (FIGS. 3A, 3B, 3G, 3H, 3I, 3J), 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 tapered towards the bottom, whereby it is either tapered or curved, so that the cutting tools 2 can be inserted into the V-shaped recess 11 in a tilt-free manner about their horizontal transverse axis 23.
  • the lower region of the cross-sectional shape can also be designed with another shape. It is essential that this lower region of the cross-sectional shape forms a bearing region 26 for tilt-free storage in uniform recesses 11, in which the bearing region 26 of the cutting tools 2 is correspondingly adapted to the uniform shape of the recesses 11 of a cutting shaft.
  • the recess 11 can be a groove with a rectangular cross-section, into which a cutting tool 2 can be inserted without tilting with a correspondingly dimensionally adapted storage area. Due to the spatial adaptation to the uniform recesses 11 of different cutting tools 2, it is possible to replace them without great technical effort.
  • the length of the cutting tools 2 is dimensioned such that they rest in the recess 11 of the cutting shaft 1 with their end face 13 pointing counter to the direction of rotation 12 against the contact surface 14 of the recess 11, so that the cutting tool 2 is fixed in the longitudinal direction.
  • the end face and the adjacent lateral surface 20 or the adjacent lateral surfaces 20 form the cutting edge 16.
  • the shape of the cutting edge 16 is determined by the shape or the shape of the upper edge 24 of the cross-sectional area of the cutting tool 2 and corresponds to this.
  • a small protrusion causes a thin chip during operation and a large protrusion causes a correspondingly thicker chip.
  • FIG. 3A shows a cutting tool 2 with a known square cross section and a single cutting tip 17 per cutting edge 16. This cutting tool with a square cross section has the height H.
  • the tapered upper edge 24 can be spaced apart by the distance H + ⁇ , as a result of which the projection on the cutting shaft 1 increases by ⁇ compared to the cutting tool which is square in cross section in FIG. 3A.
  • the upper edge 24 of the cross-sectional area or the cutting edge 16 can also be formed in a zigzag shape with two relatively closely spaced tips 27 (FIGS. 3C, 3D), which means that the throughput of the material to be shredded compared to the use of a cutting tool 2 a single peak is increased significantly.
  • This cutting tool 2 is particularly suitable for shredding 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 off (FIGS. 3E, 3F).
  • cutting tools 2 with cutting edges 16 in the form of blunt tips 29 (FIGS. 3G, 3H) or with curved cutting edges (FIGS. 3I to 3L) are used, the width of the blunt tip 29 or the radius the arcuate cutting edge 30 can be varied accordingly.
  • the cutting tools 2 with a blunt tip 29 or with a small radius arcuate cutting edge 30 are preferably symmetrical about a horizontal plane, so that they can be used four times by turning about the horizontal and vertical transverse axes 23 and 32.
  • the symmetrical cutting tools 2 with an arcuate cutting edge 30 thus have a circular or oval cross section with a larger projection.
  • a further modification of the cutting tool 2 to extend the performance of the comminution machine is the configuration of the end face 13 with a hollow ground section 33 (FIGS. 5A, 5B), which is introduced adjacent to the cutting edge 16.
  • a flat area 34 is preferably left in the central area of the end face 13, so that the support of the cutting tool 2 on the contact face 14 in the recess 11 is ensured.
  • the cutting tool 2 with hollow ground section 33 shown in FIGS. 5A and 5B has a square cross section. Such a hollow grinding 2 can also be introduced accordingly on the end faces 13 of the cutting tools shown in FIGS. 3B to 3L.
  • the cutting tool body 35 is an elongated, one-piece metal body with a square cross section, two end faces 13a and side faces 20.
  • the length of the cutting tool body 35 is somewhat shorter than that of the cutting tools 2 shown in FIGS. 3A to 3L.
  • the cutting tool body 35 is however provided in the same way with the vertical bore 21 for fastening in the recess 11.
  • a horizontal threaded bore 38 is made centrally on the end faces 13a, in which a screw for fastening a cutting tip 36 can engage.
  • the end faces 13a have a contoured surface with two cross-shaped grooves 37, which each extend between the tips of the end faces 13a.
  • the cutting tips 36 are thin metal tips which can have a correspondingly square shape like the end faces 13a of the tool body 35.
  • a hole 38a is made, which can be penetrated by a fastening screw.
  • On their rear side they have crosswise arranged webs 39 which are spatially adapted to the grooves 37 of the end faces 13a, so that the cutting plates 36 can be attached to the end faces 13a of the cutting tool body 35 in a positive and non-rotatable manner.
  • the cutting tool 2 consisting of the cutting tool body 35 and the cutting tip 36 thus has the same spatial shape and the same dimensions as the one-piece cutting tool 2 shown in FIG. 3A. All four tips of the cutting tips 36 can be used as the cutting tip 39, so that a cutting tool 2 with two cutting tips 36 can be used eight times. In addition, cutting tips 36 can be attached to the cutting tool body with the three-dimensional shapes shown in FIGS. 3B to 3L, so that this variety of shapes of the cutting edges is also ensured in the multi-part cutting tool 2.
  • the cutting tip 36 can also be provided with a hollow grinding.
  • the grain size is determined by the size of the holes in the sieve 8 of the final granulate.
  • the inventors found that with unfavorable proportions, such as a large protrusion of the cutting tool and a small hole opening on the sieve 8, the material to be shredded very often has to be guided through the counter-cut between the cutting tool 2 and the cutting plate 3 or the re-cutting bar 4 until it is can penetrate through the perforated screen. This reduced the throughput and the frictional heat and increased tool wear.
  • the shredding machines can therefore be provided with different sets of cutting tools and correspondingly shaped cutting plates 3 or re-cutting bars 4, the shredding machine being able to be adapted to the material to be shredded simply by exchanging the cutting tools 2 and the corresponding cutting plates 3 or re-cutting bars 4.
  • the sets of cutting tools 2 differ from one another in the shape and / or the size or the height H of the cutting tools.
  • the size reduction machines can have round as well as polygonal cutting shafts in cross section.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Shovels (AREA)
  • Milling Processes (AREA)
  • Working Measures On Existing Buildindgs (AREA)
EP96115497A 1995-10-04 1996-09-26 Outil de coupe pour déchiqueteurs Expired - Lifetime EP0767004B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01127043A EP1184080B1 (fr) 1995-10-04 1996-09-26 Outil de coupe pour déchiqueteurs

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29515768U DE29515768U1 (de) 1995-10-04 1995-10-04 Schneidwerkzeug für Zerkleinerungsmaschinen
DE29515768U 1995-10-04

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP01127043A Division EP1184080B1 (fr) 1995-10-04 1996-09-26 Outil de coupe pour déchiqueteurs

Publications (2)

Publication Number Publication Date
EP0767004A1 true EP0767004A1 (fr) 1997-04-09
EP0767004B1 EP0767004B1 (fr) 2002-12-04

Family

ID=8013749

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01127043A Expired - Lifetime EP1184080B1 (fr) 1995-10-04 1996-09-26 Outil de coupe pour déchiqueteurs
EP96115497A Expired - Lifetime EP0767004B1 (fr) 1995-10-04 1996-09-26 Outil de coupe pour déchiqueteurs

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP01127043A Expired - Lifetime EP1184080B1 (fr) 1995-10-04 1996-09-26 Outil de coupe pour déchiqueteurs

Country Status (5)

Country Link
EP (2) EP1184080B1 (fr)
JP (1) JPH09187671A (fr)
AT (2) ATE413922T1 (fr)
DE (3) DE29515768U1 (fr)
ES (1) ES2317867T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1166875A3 (fr) * 2000-05-09 2003-02-12 Claudio Bano Rotor avec des outils à découpage, en particulier pour les déchiqueteurs
EP1304169A3 (fr) * 2001-10-18 2003-08-13 Heissenberger & Pretzler Ges.m.b.H. Dispositif à broyer
US9144803B2 (en) 2011-06-24 2015-09-29 Vecoplan Llc Shredder with multi-point cutters

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2196669T3 (es) * 1998-05-12 2003-12-16 Holz Metall Abfall Recyclingte Dispositivo de montaje de cuchillas en un arbol cortante de una maquina trituradora.
EP0956901A1 (fr) * 1998-05-12 1999-11-17 Holz-, Metall-, Abfall-, Recyclingtechnik GmbH Arbre coupant muni d'éléments coupants pour appareil désintégrateur
FI122643B (fi) * 2010-07-07 2012-04-30 Bmh Technology Oy Murskainroottorin teräpala
DK3248688T3 (en) * 2016-05-27 2018-08-06 Untha Shredding Tech Gmbh KNIFE FOR A MAKING MACHINE
CN106076554B (zh) * 2016-08-25 2018-07-20 广东隽诺环保科技股份有限公司 一种用于单轴撕碎机的刀片

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164329A (en) * 1976-12-03 1979-08-14 Lee Heydenreich Chipper roller and knives therefor
EP0387868A2 (fr) * 1989-03-15 1990-09-19 Klöckner Maschinen- und Anlagenbau GmbH Dispositif de broyage pour déchets de bois
DE4000887A1 (de) * 1990-01-13 1991-07-18 Karl Ackermann Vorrichtung zum zerkleinern von material aller art, insbesondere brennbarer abfall wie stangenholz und aeste
DE4242740A1 (de) * 1992-12-17 1994-06-23 Holz Metall Abfall Recyclingte Zerkleinerungsmaschine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3932345C3 (de) * 1989-09-28 1998-06-10 Vecoplan Maschf Gmbh Zerkleinerungsvorrichtung für Abfälle
DE9017301U1 (de) * 1990-12-21 1991-03-14 Vecoplan GmbH Maschinenfabrik, 5439 Bad Marienberg Hackmesser für Zerkleinerungsvorrichtungen
AT398711B (de) * 1993-03-04 1995-01-25 Mawera Holzfeuerungsanlagen Zylindrischer rotor
DE9307422U1 (de) * 1993-05-15 1993-10-21 Gross, Stefan, 74074 Heilbronn Zerkleinerungsvorrichtung für Abfälle
DE4342647C2 (de) * 1993-12-14 1997-10-02 Vecoplan Maschf Gmbh Zerkleinerungsvorrichtung
DE9416681U1 (de) * 1994-10-18 1995-01-26 Ackermann, Karl, 84323 Massing Zerkleinerungsvorrichtung für Hackgut mit Rundmesserzerkleinerungswalze
DE9421212U1 (de) * 1994-12-06 1995-08-17 Jahn, Richard, Dipl.-Ing. (FH), 55595 Argenschwang Schneid- und Hackmesser mit Stabilisierungskanten zum Einsatz in Zerkleinerungsvorrichtungen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4164329A (en) * 1976-12-03 1979-08-14 Lee Heydenreich Chipper roller and knives therefor
EP0387868A2 (fr) * 1989-03-15 1990-09-19 Klöckner Maschinen- und Anlagenbau GmbH Dispositif de broyage pour déchets de bois
DE4000887A1 (de) * 1990-01-13 1991-07-18 Karl Ackermann Vorrichtung zum zerkleinern von material aller art, insbesondere brennbarer abfall wie stangenholz und aeste
DE4242740A1 (de) * 1992-12-17 1994-06-23 Holz Metall Abfall Recyclingte Zerkleinerungsmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1166875A3 (fr) * 2000-05-09 2003-02-12 Claudio Bano Rotor avec des outils à découpage, en particulier pour les déchiqueteurs
EP1304169A3 (fr) * 2001-10-18 2003-08-13 Heissenberger & Pretzler Ges.m.b.H. Dispositif à broyer
US9144803B2 (en) 2011-06-24 2015-09-29 Vecoplan Llc Shredder with multi-point cutters

Also Published As

Publication number Publication date
DE29515768U1 (de) 1995-12-07
ES2317867T3 (es) 2009-05-01
ATE413922T1 (de) 2008-11-15
EP1184080A1 (fr) 2002-03-06
DE59609944D1 (de) 2003-01-16
ATE228888T1 (de) 2002-12-15
DE59611489D1 (de) 2008-12-24
EP0767004B1 (fr) 2002-12-04
JPH09187671A (ja) 1997-07-22
EP1184080B1 (fr) 2008-11-12

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