EP1053083B1 - Granuliervorrichtung mit schneidrotor - Google Patents

Granuliervorrichtung mit schneidrotor Download PDF

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Publication number
EP1053083B1
EP1053083B1 EP99946138A EP99946138A EP1053083B1 EP 1053083 B1 EP1053083 B1 EP 1053083B1 EP 99946138 A EP99946138 A EP 99946138A EP 99946138 A EP99946138 A EP 99946138A EP 1053083 B1 EP1053083 B1 EP 1053083B1
Authority
EP
European Patent Office
Prior art keywords
recess
cutting
rotor
cutting blade
rotor body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99946138A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1053083A1 (de
Inventor
Peter Meister
Juergen Seifert
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.)
Rieter Automatik GmbH
Original Assignee
Rieter Automatik 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 Rieter Automatik GmbH filed Critical Rieter Automatik GmbH
Publication of EP1053083A1 publication Critical patent/EP1053083A1/de
Application granted granted Critical
Publication of EP1053083B1 publication Critical patent/EP1053083B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • 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
    • B02C18/148—Disintegrating by knives or other cutting or tearing members which chop material into fragments with rotating knives within horizontal containers specially adapted for disintegrating plastics, e.g. cinematographic films
    • 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
    • B02C18/186—Axially elongated knives

Definitions

  • the invention relates to a granulating device for separating plastic fiber strands in pellets with a strand feeder and a cutting rotor according to the preamble of claim 1.
  • Such granulating are in Strand pelletizers used in which a plastic in molten State from nozzles is pressed into strands, which are initially in a supply channel be cooled to the extent that they have no sticky surface, and then be fed by means of a strand feeding a granulator.
  • a cylindrical cutting rotor rotates with high speed, which is equipped on its outer surface with Schneidmessem and separates the plastic fiber strands into pellets.
  • Such pellets can then as Plastic granules are provided for further processing steps.
  • the heart of such a granulator is the cutting rotor with his knives.
  • These knives are distributed around the circumference of the rotor shell and can be mechanical or pneumatic or hydromechanical or electromechanical be clamped with their foot portions in grooves in the rotor body.
  • cutting rotors are conceivable in which preferably carbide knives are soldered in the grooves of the rotor body, however, have such Solutions have the disadvantage that the blades are not replaced without much effort can be.
  • the document EP 0 357 549 A1 discloses a cutting rotor with grooves in a Rotor body clamped knives known, the knives at least one Have concave clamping surface against which a cone screw is applied, the Axle parallel to the longitudinal direction of the knife, wherein the cone of the cone screw eccentrically abuts the clamping surface.
  • This known solution looks for a knife two against each other braced cone screws in front, with the one Cone screw in the axial direction from an edge of the knife from the knife clamped and the second cone screw from the opposite edge of the Knife this strained.
  • the knife in the axial direction on the Rotor mantle fixed and prestressed.
  • a Clamping sleeve with obvious multiple flattening of its outer contour (see Fig. 1) proposed).
  • a multi-flattened clamping sleeve is a complicated and thus expensive component, which also has correspondingly shaped recesses in the rotor body presupposes what constitutes a significant factory problem
  • the invention is based on the object, a simple structural measure to create, with the attachment of the highest possible number of Schneidmessem allowing easy replacement of cutting blades and their secure attachment in the rotor should be made possible.
  • This task will solved in that the clamping sleeve at its inner end an eccentric Approach as a locking device against rotation of the clamping sleeve having in an extension of the recess in the rotor body protrudes and engages with a recess-free area next to the opposite recess stands.
  • the operation of the locking device against rotation of the clamping sleeve is based so on two interrelated features, namely the design of the clamping sleeve with the eccentric approach and the Length of the recesses that allow the recording of the approach and prevent his twisting at the same time. This will ensure that when Screwing in a clamping sleeve spreading the grub screw, the clamping sleeve in held their position, so not rotated by the grub screw can ⁇ so that it spreads immediately when tightening the clamping sleeve, so that they can certainly exercise their detention function.
  • the recesses in the cutting blades and the recesses in the rotor body together in cross-section staggered circle segments.
  • This offset of the cross-sectional circle segments of the recesses against each other is minimal and ensures that not only a clamping effect in tangential direction acting on the cutting blade from the clamping sleeve, but also a radial component presses the knife onto the rotor.
  • the cross-sectional circle segment of the recess of the cutting blade radially outward of the cross-sectional circle segment of the recess of Rotor body offset. An offset in this direction causes the collet radially presses the knife into the groove of the rotor body, so no play between the groove bottom and the cutting blade is possible.
  • recesses are provided on each side of the blade, which with two corresponding clamping sleeves are engaged, which bear against the rotor body support.
  • the cutting blades with their foot in the grooves in the axial Direction at an acute angle less than 10 degrees, preferably between 3 and 6 degrees to the rotor axis of the cutting rotor on the rotor shell evenly arranged distributed in the rotor body.
  • This arrangement has the advantage that the pellets in the granulator are not cut off by the plastic fiber strands, but can be cut off.
  • the recess of the Cutting knife introduced on the cutting edge side.
  • the recess is the cutting blade of the clamping element, the Clamping sleeve, pressed on the groove surface of the rotor body, the cutting edge opposite.
  • a preferred material for the clamping sleeve is spring bronze. This material is not only highly elastic as the spring steel, but also allows a limited plastic deformation, so that the spring bronze easier on cross-sectional displacements and cross-section offset between the recess of the cutting blade and the recess in the rotor body can adjust.
  • Fig. 1 shows a schematic diagram of a cutting rotor 1, as in a Granulating device of a first preferred embodiment of the invention is used.
  • the cutting rotor has a rotor body 5, which on its rotor shell surface 2 cutting blade 3 preferably carries hard metal plates.
  • the Hard metal plates have a cutting edge 7, which consists of the rotor shell protrudes.
  • a foot portion 22 of each insert is inserted in a groove 6, the parallel to the rotor axis 4 in the rotor body 5 of the rotor shell surface 2 from is incorporated.
  • the groove 6 has a sharp angle of attack ⁇ to the radial r of the Cutting rotor 1, so that the cutting blade a same angle can take as soon as it is fixed in the groove.
  • the circle segments of the cross sections of the recesses 12 of the rotor body 5 and the recesses 8 of the cutting blades 3 are radial in this embodiment offset against each other. Since this offset is only 0, 02 - 0, 2 millimeters, is he in the schematic diagram of Figure 1 not visible.
  • This offset is the Recess 8 in the cutting blade 3 radially outward of the recess 12 offset in the rotor body 5. This offset is when driving the slotted clamping sleeve in the clamping position of the foot area 22 of the Cutting knife 3 pressed on the groove bottom of the groove 6.
  • By arranging the Recess 8 on the cutting edge side 21 of the cutting blade 3 is achieved that the clamping element 11, the cutting blade simultaneously with a back 25th flat pressed against the groove side wall 26. This will be beneficial to the Cutting forces acting on the protruding cutting edge 7 of the cutting blade. 3 act, transmitted via the groove side wall 26 to the rotor body 5.
  • Both the recess 12 in the rotor body 5 and the recess 8 in the cutting blade 3 have smooth surfaces and are easy by milling or drilling producible.
  • the clamping surfaces on which the clamping sleeve acts completely free of thread-like notches, so that a material-weakening notch effect, in particular in the area of the rotor body 5 is avoided. Since the axial tension through the clamping sleeve no pressure in the axial direction or longitudinally exerted on the cutting blade 3, are the cutting blades are not in their longitudinal extent of the order of magnitude Fitting tolerance between groove 6 and cutting blade 3 bent or warped.
  • the clamping sleeve 11 To replace a cutting blade 3, the clamping sleeve 11 must from her Clamping position to be removed.
  • an internal thread in the clamping sleeve are provided.
  • the slotted clamping sleeve has an internal thread on. This internal thread tapers conically inwards, so that a cylindrical grub screw 17 with a hexagon socket 27 on her Clamping sleeve 11 can be screwed while the cylindrical outer contour the clamping sleeve expands, so that these form fit the rotor body 5 with the Cutting knife 3 connects via the recesses 8 and 12 in the radial direction and frictionally ensures that an axial displacement of the cutting blade. 3 relative to the rotor body 5 can not occur.
  • This second preferred Embodiment of the invention has over the first the advantage that the Clamping sleeve does not have to be pressed into the recesses 8 and 12, but it can be provided a push fit, which only by screwing the Grub screw 17 in the tapered from outside to inside thread the clamping sleeve 11 for a frictional connection between the rotor body. 5 and cutting blade 3 leads.
  • FIG. 2 also shows the schematic diagram of a cutting rotor 3 a Granulating device of a third preferred embodiment of the invention, which will now be explained in detail with the aid of FIGS. 3 to 6.
  • FIG. 3 shows a View of a cutting blade 3 of a granulator of the third Embodiment of the invention.
  • This cutting blade 3 has in the foot area 22nd on the cutting edge side 21 two recesses 8 and 9, which are parallel to Cutting edge 7 were introduced into the cutting blade 3.
  • This recess is clearly shown in profile in the side view of Figure 4 and forms in Cross section of a circle segment.
  • This circle segment is opposite the recess 12, which is shown in Figures 1 and 2, radially by 0, 02 to 0, 2 millimeters offset radially outwards relative to the recess 12.
  • Fig. 5 shows a cross section through a clamping sleeve 11 of a third Embodiment of the invention.
  • This clamping sleeve 11 has an internal thread 13th on, which is cylindrical from the outer edge 14 of the clamping sleeve inwards extends and in the end region 16 of the clamping sleeve merges into an inner cone 15.
  • a grub screw 17, as shown in Figure 6, stands with the Inner cone 15 by a cone lug 18 engaged as soon as Grub screw 17 is screwed into the internal thread 13 of the clamping sleeve 11.
  • this screwing the grub screw 17 into the clamping sleeve 11 is the Clamping sleeve 11 in the region of the inner cone 15 through the cone extension 18 of Grub screw 17 widened. This is the transition of an external thread 28 of the grub screw 17 to the cone extension 18 only subjected to pressure.
  • the clamping sleeve 11 by removing the grub screw and by screwing a puller quickly and safely replaced.
  • the second and third Embodiment have through the clear and predictable separation of functions of Grub screw and serving as a clamping element clamping sleeve a large Advantage and increased safety against breakage and misconduct compared with the solutions in the prior art. Since the grub screw the Figure 6 is not like a cone screw of the prior art to train is claimed, their dimensions can be kept extremely small, so that the recesses, in particular in the rotor body 5, relative to the State of the art can be reduced. Also this fact increases the Reliability of the granulating device according to the invention.
  • Fig. 7 shows a side view of a clamping element 10 with a Locking device 30 against rotation.
  • This locking device consists in this vorzugzugten embodiment of an eccentric 29, as a cylindrical Approach to the clamping sleeve 11 has been formed.
  • the axis of the eccentric is included half the recess depth t of the recess 9 in the cutting blade 3, as in Figure 4 shown opposite the longitudinal axis 31 of the clamping sleeve 11 offset.
  • the Eccentric has a depth a. Accordingly, the recess 12 in the Cutting rotor for receiving the clamping element 10 of Figure 7 by the amount a deeper than the recess 8 or 9 in the cutting blade 3. After insertion the slotted clamping sleeve 11, as shown in Fig.
  • the eccentric 29 in Engagement with the recess-free area of the cutting blade 3.
  • the approach to lock a rotation of the clamping sleeve 11 can as locking device 30th assume any shape when the recess 12 in the rotor body. 5 is adapted according to the shape of the locking device 30.
  • the eccentric 29, adapted and enlarged Recess, such as a hole in the rotor body 5 in extension of Recess 12 may be arranged.
  • Fig. 8 shows an enlarged portion of a cutting rotor 1 fitted with me Clamping element 10 with a locking device 30 against rotation of the Clamping elements 10 in the form of a clamping sleeve 11.
  • the eccentric 29 is behind the Image plane and is therefore shown in dashed lines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Disintegrating Or Milling (AREA)
  • Preliminary Treatment Of Fibers (AREA)
EP99946138A 1998-12-02 1999-09-07 Granuliervorrichtung mit schneidrotor Expired - Lifetime EP1053083B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19855617 1998-12-02
DE19855617A DE19855617C2 (de) 1998-12-02 1998-12-02 Granuliervorrichtung mit Schneidrotor
PCT/EP1999/006572 WO2000032367A1 (de) 1998-12-02 1999-09-07 Granuliervorrichtung mit schneidrotor

Publications (2)

Publication Number Publication Date
EP1053083A1 EP1053083A1 (de) 2000-11-22
EP1053083B1 true EP1053083B1 (de) 2004-11-24

Family

ID=7889749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99946138A Expired - Lifetime EP1053083B1 (de) 1998-12-02 1999-09-07 Granuliervorrichtung mit schneidrotor

Country Status (12)

Country Link
US (1) US6386469B1 (US07585860-20090908-C00162.png)
EP (1) EP1053083B1 (US07585860-20090908-C00162.png)
JP (1) JP4092677B2 (US07585860-20090908-C00162.png)
KR (1) KR100567452B1 (US07585860-20090908-C00162.png)
CN (1) CN1239299C (US07585860-20090908-C00162.png)
AT (1) ATE283152T1 (US07585860-20090908-C00162.png)
BR (1) BR9908549A (US07585860-20090908-C00162.png)
CA (1) CA2319804C (US07585860-20090908-C00162.png)
DE (2) DE19855617C2 (US07585860-20090908-C00162.png)
ES (1) ES2228101T3 (US07585860-20090908-C00162.png)
TW (1) TW434129B (US07585860-20090908-C00162.png)
WO (1) WO2000032367A1 (US07585860-20090908-C00162.png)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10062113C1 (de) 2000-12-13 2002-04-18 Bkg Bruckmann & Kreyenborg Granuliertechnik Gmbh Trenneinrichtung für Unterwassergranulatoren
JP3936268B2 (ja) 2002-09-19 2007-06-27 株式会社松井製作所 細断機
DE20301364U1 (de) 2003-01-24 2003-04-17 Kocher + Beck Gmbh + Co. Rotationsstanztechnik Kg, 72124 Pliezhausen Magnetzylinder
DE10316303A1 (de) * 2003-04-08 2004-10-21 Cfs Germany Gmbh Messerkopf für Fleischkutter
DE102004049862B4 (de) * 2004-10-13 2013-08-01 Automatik Plastics Machinery Gmbh Messerrotor zum Granulieren von Kunststoffsträngen
DE102005052191A1 (de) * 2005-10-28 2007-05-03 Knecht Maschinenbau Gmbh Fleischkutter
DE102007052586A1 (de) * 2007-11-03 2009-05-07 Schmidt & Heinzmann Gmbh & Co. Kg Schneidvorrichtung
DE102008019776A1 (de) 2008-04-18 2009-10-22 CFS Bühl GmbH Verfahren, Vorrichtung sowie Messer zum Aufschneiden von Lebensmitteln
WO2010148208A1 (en) * 2009-06-17 2010-12-23 Gala Industries, Inc. Solid one-piece cutter hub and blade combination
CN101733857B (zh) * 2010-02-05 2013-10-30 石家庄德倍隆科技有限公司 塑料挤出机用节能型自牵引式拉条切粒机
DE102010008187A1 (de) 2010-02-16 2011-08-18 KENNAMETAL INC., Pa. Werkzeug zur spanenden Materialbearbeitung sowie Verfahren zum Ausrichten von Schneideinsätzen in einem solchen Werkzeug
DE102011052529A1 (de) * 2011-08-09 2013-02-14 Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg Verfahren zum Schärfen, insbesondere Nachschärfen von Messern eines Messerringzerspaners
DE202012101980U1 (de) * 2012-05-30 2012-09-12 Bkg Bruckmann & Kreyenborg Granuliertechnik Gmbh Messerkopf für eine Unterwasser-Granulieranlage
US20150202788A1 (en) 2014-01-17 2015-07-23 Automatik Plastics Machinery Gmbh Pelletizing device with a cutting rotor
CN105936097A (zh) * 2016-06-07 2016-09-14 东莞市汇如涞电能科技有限公司 分段拼接式切粒机滚刀
USD925627S1 (en) * 2019-02-26 2021-07-20 The Charles Machine Works, Inc. Microtrencher blade
USD925628S1 (en) * 2019-02-26 2021-07-20 The Charles Machine Works, Inc. Microtrencher blade
USD925626S1 (en) * 2019-02-26 2021-07-20 The Charles Machine Works, Inc. Microtrencher blade
US11104025B2 (en) * 2019-03-20 2021-08-31 Mccain Foods Limited Blade assembly for cutting food
CN110899301B (zh) * 2019-12-02 2021-01-08 烟台腾泰环保建材有限公司 一种建筑垃圾分类回收方法
GB202109030D0 (en) * 2021-06-23 2021-08-04 Element Six Uk Ltd Rotary abrasive machining
USD1040197S1 (en) 2021-07-16 2024-08-27 The Charles Machine Works, Inc. Microtrencher blade
USD1032318S1 (en) 2022-03-17 2024-06-25 The Charles Machine Works, Inc. Tooth for use with a microtrenching blade

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US2652749A (en) * 1951-10-17 1953-09-22 Hagmeister Heinrich Toolholder
FR2131650A5 (US07585860-20090908-C00162.png) 1971-03-27 1972-11-10 Svenska Ind Tablerings Svetab
US3887975A (en) 1974-05-13 1975-06-10 Kennametal Inc Slotting cutter and cutting insert therefor
DE2829732A1 (de) * 1978-07-06 1980-01-17 Scheer & Cie C F Schneidwerkzeug
DE3319799A1 (de) * 1983-06-01 1984-12-06 Werner 6967 Buchen Keller Vorrichtung zur klemmenden befestigung von schneideinsaetzen
DE3439029C2 (de) * 1984-10-25 1986-11-20 Rudolf P. 7000 Stuttgart Fritsch Rundlaufendes Schneidwerkzeug, insbesondere zum Stranggranulieren von Kunststoffen
DE3736269A1 (de) * 1987-10-27 1989-09-14 Bert Steffens Rotierendes werkzeug zum bearbeiten von werkstoffen in muehlenraeumen
CH678027A5 (US07585860-20090908-C00162.png) * 1988-09-02 1991-07-31 Krupp Widia Schweiz Ag
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US5042733A (en) 1990-08-06 1991-08-27 Hans Hench Rotary cutter, particularly for granulating plastic material

Also Published As

Publication number Publication date
WO2000032367A1 (de) 2000-06-08
DE19855617C2 (de) 2003-07-17
KR20010040529A (ko) 2001-05-15
EP1053083A1 (de) 2000-11-22
JP2002531283A (ja) 2002-09-24
KR100567452B1 (ko) 2006-04-04
BR9908549A (pt) 2000-11-28
DE59911143D1 (de) 2004-12-30
DE19855617A1 (de) 2000-06-08
JP4092677B2 (ja) 2008-05-28
US6386469B1 (en) 2002-05-14
ATE283152T1 (de) 2004-12-15
CN1239299C (zh) 2006-02-01
CA2319804A1 (en) 2000-06-08
ES2228101T3 (es) 2005-04-01
CN1289283A (zh) 2001-03-28
CA2319804C (en) 2007-05-01
TW434129B (en) 2001-05-16

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