EP1510288B1 - Procédé d'affûtage des lames d'une machine de coupe rotative et machine de coupe rotative pour mettre en oeuvre ledit procédé - Google Patents

Procédé d'affûtage des lames d'une machine de coupe rotative et machine de coupe rotative pour mettre en oeuvre ledit procédé Download PDF

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Publication number
EP1510288B1
EP1510288B1 EP20030405621 EP03405621A EP1510288B1 EP 1510288 B1 EP1510288 B1 EP 1510288B1 EP 20030405621 EP20030405621 EP 20030405621 EP 03405621 A EP03405621 A EP 03405621A EP 1510288 B1 EP1510288 B1 EP 1510288B1
Authority
EP
European Patent Office
Prior art keywords
knife
grinding disc
cutting
cutting machine
grinding
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
EP20030405621
Other languages
German (de)
English (en)
Other versions
EP1510288A1 (fr
Inventor
Sommer Remo
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.)
Mueller Martini Holding AG
Original Assignee
Mueller Martini Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mueller Martini Holding AG filed Critical Mueller Martini Holding AG
Priority to DE50306512T priority Critical patent/DE50306512D1/de
Priority to EP20030405621 priority patent/EP1510288B1/fr
Priority to JP2004247617A priority patent/JP4570923B2/ja
Priority to US10/927,187 priority patent/US7083503B2/en
Publication of EP1510288A1 publication Critical patent/EP1510288A1/fr
Application granted granted Critical
Publication of EP1510288B1 publication Critical patent/EP1510288B1/fr
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
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/12—Means for treating work or cutting member to facilitate cutting by sharpening the cutting member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/368—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades installed as an accessory on another machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
    • B24B3/36—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades
    • B24B3/46—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of cutting blades of disc blades
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/303—With tool sharpener or smoother

Definitions

  • the invention relates to a method for grinding a knife of a rotary cutting machine for the printed products processing industry, wherein a first knife with a first bearing forms a first cutting element and cooperates for the cutting operation with a second knife, which forms a second cutting element with a second cutting element.
  • Rotary cutting machines are used particularly in the printing product processing industry for cutting the open sides of printed products, for example magazines.
  • the cutting takes place in a continuous process whereby the printed products are usually conveyed between two belts in the shingled stream.
  • the rotary cutting machine has an upper blade and a lower blade, also called counter blade on. Between these two blades, the scale flow is cut in a conventional manner.
  • a rotary cutting machine of the applicant that is Upper blade made of a steel blade carrier, on which carbide blades are clamped.
  • the lower blade or counter blade consists of a blade carrier made of steel, on which a ring made of hard metal is glued.
  • the gap between the upper and lower blades should be in a range of, for example, 0.03 to 0.035 mm.
  • the bearings of the two blade shafts may consist of a precision angular contact ball bearing assembly.
  • the adjustment of the lower knife is done via a setting spindle with vernier. When adjusting either a bushing or a carriage is moved on a dovetail guide.
  • the entire cutting element is removed from the rotary cutting machine for regrinding and replaced by a replacement cutting element with sharp blades.
  • the dismantled cutting element and the replacement cutting element respectively comprise the knife and the bearing.
  • the removed cutting element is installed in an external grinding device and there the upper knife is reground. Subsequently, the cutting element is re-installed with the reground upper blade in the rotary cutting machine. Subsequently, the kerf must be readjusted.
  • This method has the advantages that the machine life is comparatively short and that the geometries between the upper blade and the lower blade are preserved since all the components remain in the cutting element. For the user of the rotary cutting machine, however, it is disadvantageous because he is forced to purchase more expensive replacement cutting elements.
  • the pre-published WO 00/69596 discloses a device for sharpening circular leaves having a cutting edge on the circumference, which are ground at the end edge of an annular grinding wheel.
  • the invention has for its object to provide a method of the type mentioned, which allows easier regrinding, especially the upper blade, at a lower cost and still high quality cut.
  • a knife in particular the lower knife, is exchanged by a grinding wheel and the non-exchanged knife is ground therewith.
  • the process takes advantage of the existing high precision bearings of the rotary cutting machine for regrinding.
  • the knife can thus be ground with very high precision. This allows a narrower gap setting and thus a better cutting quality even with a reground knife.
  • the inventive method is particularly suitable for regrinding the upper blade, but in principle, the lower blade or counter blade can be reground by the upper blade is replaced by a grinding wheel.
  • the method is particularly suitable for regrinding an upper knife, which is designed as a segment knife and thus has a plurality of blades on a support.
  • Such segmental upper blades are always ground dry. Since the blades are interrupted due to the segmentation and the surface to be regrind is relatively small, no critical heating takes place and it is therefore not necessary to cool during the grinding process.
  • wet regrinding is also possible with the method according to the invention. Dry regrinding is of course much easier, since no coolant must be supplied.
  • the grinding wheel is connected via an endless drive member with the knife to be ground.
  • the knife is provided to provide the grinding wheel and the knife to be ground with a wheel and in particular a pulley.
  • the pulleys are designed to provide a suitable gear ratio and optimum grinding speed.
  • tungsten carbide the optimum grinding speed of 20 to 25 m / sec. be achieved.
  • As a drive member is particularly suitable a flexible flat belt. For safety reasons or as dust protection can be easily grown a protective cover. With sparks flight is due to the low delivery rate is not expected.
  • the invention also relates to a rotary cutting machine for carrying out the method.
  • the rotary cutting machine 1 shown in Figures 1 and 2 has a machine frame 2, in which a cutting element 5 is mounted, which has an upper blade 6.
  • the cutting element 5 has a shaft, not shown here, which is driven by a motor 3 which is mounted on the machine frame 2.
  • a drive member not shown here, is arranged, which connects the motor with the shaft of the cutting element 5.
  • a mounting plate 13 is arranged, with which the rotary cutting machine 1 can be arranged in a suitable position next to a scale flow or a transport device for such a scale flow.
  • the upper blade 6 is a so-called segment blade and has a disc-shaped carrier 7, on the periphery of a plurality of blades 8 are clamped hard metal.
  • Such outer diameter 6 are known in the art.
  • the cutting element 5 has a in Figure 2 only indicated Bearing 16, which is designed as a precision angular contact ball bearings. In the figure 2, the axis A1 of this bearing 16 is indicated.
  • a pulley 9 is constructed, which is arranged coaxially to the axis A1.
  • a drive belt 10 is placed, which is placed around another pulley 11 of a grinding wheel 12.
  • This grinding wheel 12 is placed on a receptacle 28, on which, according to FIG. 3, the lower blade 20 of a further cutting element 29 is usually seated.
  • This receptacle 28 is connected to a shaft, not shown here, which is mounted in a bearing 17 only indicated in Figure 4.
  • the axis A2 of this shaft is parallel to the axis A1.
  • the receptacle 28 is adjustable on a provided with a vernier knob 18 of a feed device 19 in the directions of the axis A2.
  • the adjustment takes place in a conventional manner, in particular via an adjusting spindle.
  • a sleeve or a carriage is moved on a dovetail guide. It is thus possible along the axis A2 a very precise delivery of the grinding wheel 12.
  • the grinding wheel 12 has, according to FIG. 2, a flat inner side 15 which can be placed in an upper area against a lower area of an inner side 14 of the upper blade 6. If the upper blade 6 is rotated about the axis A1 with the motor 3, the grinding wheel 12 simultaneously rotates about the axis A2, since the drive belt 10 connects the upper blade 6 with the grinding wheel 12. Since now the pulley 11 has a substantially smaller diameter than the pulley 9, the grinding wheel 12 rotates much faster than the upper blade. 6
  • the gear ratio is chosen to give an optimum grinding speed that is in the case of blades 8 made of hard metal in the range of 20 to 25 m / sec. lies.
  • the lower blade 20 is removed and thus removed from the receptacle 28.
  • the grinding wheel 12 is placed on the receptacle 28 and rotatably connected thereto.
  • the pulley 11 is already sitting on the grinding wheel 12.
  • the pulley 9 is attached to the upper blade 6.
  • a protective cover not shown here, is attached, which covers in particular the upper blade 6.
  • the motor 3 is switched on, so that now the upper blade 6 and the grinding wheel 12 are driven. Due to the above-mentioned translation, the relative rotational speed corresponds to the optimum grinding speed.
  • the grinding wheel 12 is now delivered until the inner side 15 of the grinding wheel 12 bears against surfaces of the blades 8.
  • the regrinding time depends on how severely the blades 8 are worn.
  • the grinding wheel 12 is readjusted, for example, by about 1/100 mm and then ground for about one minute. This process is repeated until the blades 8 have the required quality. After the last delivery, for example, 10 minutes must be ground.
  • the grinding wheel 12 is exchanged for the lower blade 20.
  • the drive belt 10 and the two pulleys 9 and 11 are removed here. After adjusting the kerf, the rotary cutting machine 1 is ready for further production.
  • the aforementioned regrinding can be done dry because the blades are interrupted due to the segmentation and no critical heating takes place. If the upper blade 6 is not such a segment blade, a wet regrinding with suitable coolant is basically possible.
  • the regrinding is carried out with high precision, since the high precision of the bearings of the cutting elements with the backlash-free adjustment is also used for regrinding.
  • the cutting gap can thus be set optimally small even after regrinding, resulting in excellent cutting results.
  • the method is also applicable for grinding the lower blade 20.
  • the upper blade 6 is replaced by the grinding wheel 21 shown in FIGS. 3 and 4.
  • the grinding wheel 21 is driven directly by the motor 3 accordingly.
  • a pulley 23 is placed, which is connected via the drive belt 10 with the pulley 22.
  • the translation is chosen so that there is an optimal cutting speed.
  • the nachzuschleifende lower blade 20 consists of a carrier 26, on which a ring 27 is cemented from hard metal. According to FIG. 4, this ring 27 has an inner side 25 on which, during regrinding, a plane inner side 24 of FIG Grinding wheel 21 is applied.
  • the lower blade 20 is delivered by turning the knob 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (10)

  1. Procédé d'affûtage d'une lame (6, 20) d'une machine de coupe rotative (1) pour l'industrie de traitement des produits imprimés, sachant qu'une première lame (6) forme avec un premier palier (16) un premier élément de coupe (5) et coopère pour l'opération de coupe avec une deuxième lame (20) qui forme avec un deuxième palier (17) un deuxième élément de coupe (29), caractérisé en ce que, pour affûter l'une des lames (6, 20), l'autre lame (20, 6) est démontée et remplacée par une meule d'affûtage (12, 21), et la meule d'affûtage (12, 21) ou la lame à affûter (20) est approchée pour l'opération d'affûtage.
  2. Procédé selon la revendication 1, caractérisé en ce que la meule d'affûtage (12, 21) et la lame à affûter (6, 20) sont individuellement entraînées, ou présentent des moyens d'entraînement (9, 11 ; 22, 23) qui sont mutuellement reliés par un organe d'entraînement (10).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le deuxième palier (17) présente des moyens pour régler l'emprise de coupe, et en ce que ces moyens sont utilisés pour l'approche de la meule d'affûtage (12) ou de la lame à affûter (20).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la première lame (6) est une lame segmentée qui présente plusieurs couteaux (8) qui sont disposés sur le pourtour d'un élément porteur (7).
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la première lame (6) est une lame supérieure et la deuxième lame (20) une lame inférieure ou encore une contre-lame.
  6. Procédé selon la revendication 5, caractérisé en ce que la lame supérieure est une lame segmentée qui est réaffûtée à sec.
  7. Procédé selon la revendication 5 ou 6, caractérisé en ce que, pour le réaffûtage de la lame supérieure (6), la lame inférieure (20) est remplacée par une meule d'affûtage (12), et en ce que la meule d'affûtage (12) ou la lame à affûter (6) est approchée pour l'opération d'affûtage.
  8. Procédé selon la revendication 7, caractérisé en ce que l'approche s'effectue à l'aide d'un vernier.
  9. Machine de coupe rotative pour l'industrie de traitement des produits imprimés, sachant qu'une première lame (6) forme avec un premier palier (16) un premier élément de coupe (5) et coopère pour l'opération de coupe avec une deuxième lame (20) qui forme avec un deuxième palier (17) un deuxième élément de coupe (29), caractérisée en ce que, pour la mise en oeuvre du procédé selon la revendication 1, il est prévu au moins une meule d'affûtage (12, 21), qui est montée à la place de la première ou deuxième lame (6, 20) sur le support (28) de la lame correspondante (6, 20) et qui présente une surface d'affûtage (15, 24) contre laquelle peut être appliqué ou encore approché le côté à affûter (14, 25) de la lame à affûter (6, 20).
  10. Machine de coupe rotative selon la revendication 9, caractérisée en ce qu'un élément d'entraînement (11, 23), notamment une poulie de courroie, est fixé sur la meule d'affûtage (12, 21), et en ce qu'il est prévu un deuxième élément d'entraînement (9, 23) qui est monté sur la lame à affûter (6, 20), et en ce qu'il est prévu un organe d'entraînement (10), notamment une courroie d'entraînement, qui relie la meule d'affûtage (12, 21) à la lame à affûter (6, 20).
EP20030405621 2003-08-28 2003-08-28 Procédé d'affûtage des lames d'une machine de coupe rotative et machine de coupe rotative pour mettre en oeuvre ledit procédé Expired - Lifetime EP1510288B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE50306512T DE50306512D1 (de) 2003-08-28 2003-08-28 Verfahren zum Schleifen der Messer einer Rotationsschneidemaschine sowie Rotationsschneider zur Durchführung des Verfahrens
EP20030405621 EP1510288B1 (fr) 2003-08-28 2003-08-28 Procédé d'affûtage des lames d'une machine de coupe rotative et machine de coupe rotative pour mettre en oeuvre ledit procédé
JP2004247617A JP4570923B2 (ja) 2003-08-28 2004-08-26 回転裁断装置の刃を研磨する方法ならびにこの方法を実施するための回転裁断装置
US10/927,187 US7083503B2 (en) 2003-08-28 2004-08-27 Method for sharpening the knife of a rotary trimmer and a rotary trimmer for realizing the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030405621 EP1510288B1 (fr) 2003-08-28 2003-08-28 Procédé d'affûtage des lames d'une machine de coupe rotative et machine de coupe rotative pour mettre en oeuvre ledit procédé

Publications (2)

Publication Number Publication Date
EP1510288A1 EP1510288A1 (fr) 2005-03-02
EP1510288B1 true EP1510288B1 (fr) 2007-02-14

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Application Number Title Priority Date Filing Date
EP20030405621 Expired - Lifetime EP1510288B1 (fr) 2003-08-28 2003-08-28 Procédé d'affûtage des lames d'une machine de coupe rotative et machine de coupe rotative pour mettre en oeuvre ledit procédé

Country Status (4)

Country Link
US (1) US7083503B2 (fr)
EP (1) EP1510288B1 (fr)
JP (1) JP4570923B2 (fr)
DE (1) DE50306512D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE502004008416D1 (de) 2004-09-20 2008-12-18 Mueller Martini Holding Ag Rotationsschneidemaschine mit Verstellvorrichtung zum Einstellen des Schnittspaltes der Messer in Längsrichtung der Messerwellen
EP1952956A1 (fr) 2007-02-02 2008-08-06 Müller Martini Holding AG Dispositif de découpe pour des produits imprimés en formation imbriquée
WO2009129157A1 (fr) * 2008-04-15 2009-10-22 Premark Feg L.L.C. Trancheuse de produit alimentaire à opération d’affûtage programmée

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516385B1 (fr) * 1968-12-05 1976-02-27
JPS508184A (fr) * 1973-05-28 1975-01-28
JPH03160462A (ja) * 1989-11-17 1991-07-10 Mita Ind Co Ltd マゼンタ感光性トナー
CH681363A5 (fr) * 1990-04-02 1993-03-15 Grapha Holding Ag
JP2888617B2 (ja) * 1990-08-07 1999-05-10 ユジナージュ モンタージュ エ アシスタンス テクニーク ユー エム ア テ 回転切断装置
US5709255A (en) * 1996-10-18 1998-01-20 Key Knife, Inc. Chipper with detachable facing knives
US6748836B2 (en) * 1998-01-15 2004-06-15 Gerber Technology, Inc. Dual sharpener apparatus for maintaining the sharpness of the cutting edge on blades used to cut sheet-type work materials
US5941148A (en) * 1998-01-16 1999-08-24 Tidland Corporation Automatic slitter blade sharpener
IT1310565B1 (it) * 1999-05-12 2002-02-18 Julia Utensili Srl Dispositivo di affilatura per lame a disco
DE10135177A1 (de) * 2001-07-19 2003-02-06 Werner Schaefer Kreismesser mit Diamant- bzw. Bornitrideinlage für Längsschneideeinrichtungen
US6692424B2 (en) * 2001-08-01 2004-02-17 Gammerler Corporation Rotary trimmer apparatus and method
US6616515B2 (en) * 2001-09-17 2003-09-09 David L. Dwyer Universal jointing attachment for inserted tooth carbide heads
US6752052B2 (en) * 2001-10-30 2004-06-22 Delaware Capital Formation, Inc. Cutter assembly
US6634257B2 (en) * 2002-01-15 2003-10-21 John W. Long Sharpening method and apparatus for rotary knives

Also Published As

Publication number Publication date
US7083503B2 (en) 2006-08-01
JP4570923B2 (ja) 2010-10-27
JP2005074624A (ja) 2005-03-24
DE50306512D1 (de) 2007-03-29
EP1510288A1 (fr) 2005-03-02
US20050048878A1 (en) 2005-03-03

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