EP0505461B1 - Lippenmesser und schneidevorrichtung - Google Patents

Lippenmesser und schneidevorrichtung Download PDF

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Publication number
EP0505461B1
EP0505461B1 EP91901439A EP91901439A EP0505461B1 EP 0505461 B1 EP0505461 B1 EP 0505461B1 EP 91901439 A EP91901439 A EP 91901439A EP 91901439 A EP91901439 A EP 91901439A EP 0505461 B1 EP0505461 B1 EP 0505461B1
Authority
EP
European Patent Office
Prior art keywords
knives
knife
cutting
shaft
cutting device
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
EP91901439A
Other languages
English (en)
French (fr)
Other versions
EP0505461A1 (de
Inventor
Régis Jean-Marie Rémi MUNIER
Olivier Luc Eloi Berne
Serge Daniel Serpillon
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.)
Kodak Pathe SA
Eastman Kodak Co
Original Assignee
Kodak Pathe SA
Eastman Kodak Co
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 Kodak Pathe SA, Eastman Kodak Co filed Critical Kodak Pathe SA
Publication of EP0505461A1 publication Critical patent/EP0505461A1/de
Application granted granted Critical
Publication of EP0505461B1 publication Critical patent/EP0505461B1/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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—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
    • B26D7/2621—Means for mounting the cutting member for circular cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0046—Cutting members therefor rotating continuously about an axis perpendicular to the edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/0066—Cutting members therefor having shearing means, e.g. shearing blades, abutting 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/783—Tool pair comprises contacting overlapped discs
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/783—Tool pair comprises contacting overlapped discs
    • Y10T83/7834—With means to effect axial pressure on pair
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9396—Shear type
    • Y10T83/9401—Cutting edge wholly normal to axis of rotation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9372—Rotatable type
    • Y10T83/9403—Disc type

Definitions

  • the invention relates to a knife and a cutting device for the longitudinal cutting of products into strips such as photographic strips.
  • the knives used for this kind of application are mounted on a shaft at a spacing chosen according to the desired cutting width.
  • This knife holder shaft is mounted opposite a second shaft parallel to the first and on which are mounted counter knives against which the knives bear.
  • Such an arrangement of knives is in common use for the manufacture of photographic films or tapes of soft metal and in particular for the cutting of tapes for recording of magnetic sounds.
  • such tapes are guided on both sides, on their edges, when passing over the heads of a tape recorder, the parallelism faults not to exceed in this case an order of magnitude of a few hundredths of a millimeter.
  • patent FR 2 439 736 describes a cutting device comprising a lower knife holder shaft and an upper knife holder shaft, mutually parallel, both driven and housed in fixed bearings.
  • the lower knives have flat front faces rigidly clamped in the axial direction on the lower knife holder shaft and between which engage the corresponding upper knives, mounted on the upper knife holder shaft.
  • the upper knives are each produced by assembling a hub on which are mounted, a spacer ring centered lengthwise with, on either side of it, an elastic plane annular knife plated on an inner collar. , these elements being pressed against each other by means of spring disks.
  • the height of the spacer corresponds approximately to the height of the elastic knife.
  • US Patent 3,286,574 describes a cutting device in which the upper knives and the lower knives are flexible discs mounted on two parallel shafts, the upper knives coming from the end of one of their faces pressing on the lower knives.
  • Such a system has drawbacks since, during the sharpening of the discs, the height of these discs is necessarily reduced, just as the flexibility is modified, it is then necessary to then modify the respective positioning of the shafts which does not is not without complicating the device.
  • US Patent 3,730,043 describes a cutting device comprising a cutting shaft on which the knives are mounted by means of spring devices, maintaining for each knife the necessary bearing force on the corresponding counter knives. This type of device has the same drawbacks as those described above with reference to patent FR 2 439 736.
  • US Patent 4,428,265 relates to a device for supporting a set of flat knives against corresponding counter knives.
  • the support device comprises a combination of a threaded system disposed at one end of the knife holder shaft and a suitable tool such as a torque screwdriver for driving the threaded system in order to adjust the force. knife support on the counter knives.
  • a spring device arranged at one end of the shaft makes it possible to maintain the force of support of the knives on the counter-knives.
  • US Pat. No. 3,055,249 describes a cutting device comprising a cutting shaft on which knives are mounted back-to-back or face-to-face facing corresponding counter knives. Such a device does not allow bearing of the knives on the corresponding counter-knives by means of an axial displacement of one of the shafts relative to the other.
  • knives there are also other types of knives commonly used for this kind of application. Among these are the knives which it is common to call “lip knives". These knives which will be discussed in more detail later consist of discs provided with a central hole so that they can be mounted on a cutting shaft with only one degree of freedom, translation, and comprising on the periphery of one of their faces a lip intended to press against a knife mounted also on a shaft parallel to the first.
  • the bearing force of the knives on the counter knives is achieved by means of spring devices or other mechanical devices placed on the back of each knife.
  • Such devices due to mechanical tolerances, pose problems of regularity of the pressing force exerted by the knife on the counter knife, which causes an irregularity in the wear of the lip on the periphery of the knife.
  • Fig. 1 which is now referred to schematically shows a knife as known in the prior art of the lip knife type.
  • the knife shown consists of a disc (1) provided with a central hole (2) so that it can be, according to the prior art, mounted, by means of a ring or mount, on a cutting shaft. It includes, on the periphery of one of its faces, a lip (3) intended to press on a counter knife also mounted on a shaft arranged parallel to the first shaft.
  • the leading face (4) of the lip that is to say the face bearing on the counter knife, defines an angle ⁇ relative to the vertical, called draft angle, which is between + 0.5 ° and + 5 °.
  • the upper surface of the lip is generally designed so as to achieve an angle of attack ⁇ of between 0 and 45 ° and is optionally followed by a second surface defining an angle ⁇ sometimes called the offset angle which can vary between 10 and 45 ° .
  • these knives are generally, as shown in FIG. 2, mounted on a shaft (6) by means of a ring (7) or frame whose width defines the pitch for mounting the knives.
  • the ring comprises a lower part on which the knife is mounted directly and an upper part blocking said knife in translation when the blade comes out (8), arranged, as shown in FIG. 2, over the entire periphery of the knife, presses on the knife.
  • the knife holder shaft is moved by a certain distance of the order of 0.05 to 0.3 mm in the direction represented by the arrow A.
  • the leaf spring (8) generates a pressing force of the knife lip on the counter knife. This force is generally between 10N and 30N.
  • the knife is locked in rotation by means of a spindle (10).
  • the thickness of the knife shown in FIG. 1 is approximately 2 millimeters or more, in order to produce a non-deformable blade.
  • the diameter d of the central hole (2) is approximately 95 mm and the total diameter D of the knife is approximately 135 mm, that is to say that the height of what is called “the canvas” or the “soul” of the knife, namely (Dd) / 2, is about 20 mm.
  • the mass of the assembly comprising the stepped ring, the spring blade and the knife is approximately 900 g. According to this same principle, there exists in the technique previous other types of mounting of the same lip knife, which differ from the type previously mentioned by the device for generating the force of support of the knife on the counter knife.
  • the support force of the knife is generated by 5 springs distributed equidistantly around the circumference of the knife.
  • the bearing force is generated by a metal rod forming a spring extending in response to the small movement mentioned in the device with leaf spring.
  • this metal tube is also known to replace this metal tube with an O-ring.
  • the knife is of the type described with reference to FIG. 1.
  • the dimensions of this knife are different from those known in the prior art.
  • the knife according to the present invention is intended to be mounted directly on the knife holder shaft. Under these conditions, the diameter of the central hole is approximately equal to that of the shaft, thus making it possible to have, for the same knife diameter, a canvas height greater than that of the knives previously known and to produce knives whose flexibility is sufficient to generate the necessary support forces on the counter knives (between 10N and 30N and preferably between 10 and 20N).
  • the thickness of the knives is less than that of conventional knives and is preferably between 0.8 and 1.4 mm.
  • Fig. 3 to which reference is now made represents a device for mounting knives according to the present invention.
  • the knives (12) are mounted directly on the cutting shaft (11).
  • the knives are separated from each other by a spacer (13) allowing the knives to be kept in the cutting position and also making it possible to maintain the desired distance between them.
  • the knives (12) press against the knives (15), themselves mounted on a shaft (14) arranged parallel to the first.
  • the pressing force is generated by the response of the flexible knives to a small movement of the knife-holder shaft in the direction indicated by the arrow B when the knives press on the counter-knives.
  • the mass of the assembly comprising the knife and the spacer does not exceed 200 g.
  • Such mounting of the knife directly on the cutting shaft makes it possible to obtain a force for pressing the knives on the counter-knives, for a given displacement value, whose variations compared to an average value between 10N and 20N do not exceed 10% in absolute value.
  • such a device can have only one knife.
  • said knife is held in the cutting position by means of two rings arranged on either side of said knife.
  • at least one of these rings namely, that located opposite the knife, is stepped.
  • Such an assembly of the knife makes it possible to carry out the sharpening directly on the cutting shaft. Indeed, we no longer have, as in the prior art, a complex spring assembly which had the disadvantage of storing dust when the sharpening was carried out without dismantling the knives from the shaft or without separating them from their spring mechanism. Such an assembly also makes it possible to reduce the haze of the faces of the knives
  • the bearing force should not be too great so as not to damage the knives too quickly, and preferably, for knife dimensions and shaft displacement values such as those indicated above, is included between 10N and 20N
  • the corresponding thickness of the knife then varies between 0.8 mm and 1.4 mm.
  • Tests have been carried out in order to measure, for different types of lip knives, the variations in absolute value, relative to an average value, of the support forces F of the knives on the counter knives and this for a given value ⁇ displacement of the knife holder shaft.
  • the graph (V) represents the average of the results obtained for the four previous measurements.
  • the dashed lines represent the results obtained with conventional knives; the curves in solid lines represent the results obtained with knives according to the invention.
  • the number of operating hours of the knife is plotted on the abscissa and the level of dust from the cut is plotted on the ordinate.
  • the graphics produced show that in all cases, the level of dustiness obtained for the knives according to the invention is lower than that obtained with conventional knives, the difference generally increasing with the knife operating time.
  • Tests have also shown that, by sharpening the knives carried out directly on the cutting shaft, about half the material is removed from the knives than in the case where this sharpening is carried out when the knives are removed from the shaft. . In addition, the time required for this operation is approximately five times less.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Knives (AREA)
  • Details Of Cutting Devices (AREA)

Claims (5)

  1. Schneidevorrichtung zum Zerschneiden von Bandmaterial in dessen Längsrichtung, mit einer Schneidewelle (11), auf der eine Vielzahl von oberen kreisrunden Messern (12) gelagert ist, die eine zentrale Öffnung aufweisen und so angeordnet sind, daß sie auf untere Messer (15) Druck ausüben, die ebenfalls auf einer Welle (14) gelagert sind, die parallel zu der ersten Welle verläuft, wobei jedes der oberen Messer unmittelbar auf der Schneidewelle (11) gelagert und mittels zweier jeweils auf seinen beiden Seiten angeordneter Ringe in seiner Schneidestellung gehalten ist, dadurch gekennzeichnet, daß die oberen Messer mit Schultern versehen sind und mit den unteren Messern über eine an ihrem Außenumfang vorgesehene Lippe in Berührung gelangen, und daß die oberen Messer flexibel ausgebildet und jeweils zueinander mit der Rückseite zur Vorderseite auf der Schneidewelle so gelagert sind, daß eine axiale Bewegung einer der Wellen relativ zu der anderen bewirkt, daß jedes obere Messer auf das entsprechende untere Messer mit einer Auflagekraft einwirkt, deren Stärke von der Flexibilität der oberen Messer und dem Ausmaß der axialen Bewegung abhängt.
  2. Schneidevorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Ring mehrstufig ausgebildet ist und sein höchster Abschnitt jeweils dem oberen Messer gegenüberliegt.
  3. Schneidevorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der von den oberen Messern auf die unteren Messer ausgeübte mittlere Druck im Bereich von etwa 10 N bis 20 N liegt.
  4. Schneidevorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß der von den oberen Messern auf die unteren Messer ausgeübte mittlere Druck im Bereich von 15 N liegt.
  5. Schneidevorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der mehrstufige Ring als Abstandhalter dient und die oberen Messer in einem gewünschten Abstand voneinander hält.
EP91901439A 1989-12-12 1990-12-06 Lippenmesser und schneidevorrichtung Expired - Lifetime EP0505461B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR8916676A FR2655588A1 (fr) 1989-12-12 1989-12-12 Couteau a levre et dispositif de coupe.
FR8916676 1989-12-12
PCT/FR1990/000884 WO1991009711A1 (fr) 1989-12-12 1990-12-06 Couteau a levre et dispositif de coupe

Publications (2)

Publication Number Publication Date
EP0505461A1 EP0505461A1 (de) 1992-09-30
EP0505461B1 true EP0505461B1 (de) 1994-06-01

Family

ID=9388594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91901439A Expired - Lifetime EP0505461B1 (de) 1989-12-12 1990-12-06 Lippenmesser und schneidevorrichtung

Country Status (6)

Country Link
US (1) US5365821A (de)
EP (1) EP0505461B1 (de)
JP (1) JP3164365B2 (de)
DE (1) DE69009495T2 (de)
FR (1) FR2655588A1 (de)
WO (1) WO1991009711A1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5974922A (en) * 1998-04-22 1999-11-02 Eastman Kodak Company High rake knives for color paper slitting
JP4132569B2 (ja) * 2000-05-01 2008-08-13 富士フイルム株式会社 スリッタ刃
US7122235B2 (en) * 2001-06-11 2006-10-17 Eastman Kodak Company Tack free cauterized edge for pressure sensitive adhesive web
US20030031838A1 (en) 2001-06-11 2003-02-13 Eastman Kodak Company Tack free edge for pressure sensitive adhesive web
FR2826899B1 (fr) * 2001-07-04 2003-09-19 Eastman Kodak Co Dispositif de controle pour la mise en oeuvre d'un procede de rectification d'un arbre de coupe
FR2826894B1 (fr) * 2001-07-04 2003-09-19 Eastman Kodak Co Procede de rectification et dispositif de controle d'un arbre de coupe
US7614332B2 (en) * 2003-10-23 2009-11-10 Tac-Fast Georgia, Llc Carpet beveller
JP2005339593A (ja) * 2004-05-24 2005-12-08 Fuji Photo Film Co Ltd 磁気テープおよびその製造方法
CN101961797B (zh) * 2010-10-20 2013-01-16 宁波市凹凸重工有限公司 纵剪机
CN103586929A (zh) * 2013-10-28 2014-02-19 无锡泰极纸业有限公司 一种精切机的刀轴结构
KR20210063843A (ko) * 2019-11-25 2021-06-02 주식회사 엘지화학 슬리터

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
GB1052582A (de) *
US2239623A (en) * 1941-02-19 1941-04-22 Oster Charles Everett Slitting machine
US3055249A (en) * 1958-09-02 1962-09-25 Nat Res Dev Tape slitting apparatus
US3261249A (en) * 1963-10-14 1966-07-19 Battle Creek Packaging Machine Web cutting assembly with rotating cutting blade
US3286574A (en) * 1964-04-22 1966-11-22 Durand Auguste Paul Paper slitting apparatus
US3465631A (en) * 1966-10-06 1969-09-09 Beloit Eastern Corp Self-sharpening slitter
US3730043A (en) * 1970-11-09 1973-05-01 Ampex Apparatus for shearing webs
US3977385A (en) * 1973-06-21 1976-08-31 National Research Development Corporation Internal combustion engines with straight line reinforcing members between cylinder heads and main bearings
US4061063A (en) * 1976-12-27 1977-12-06 The Procter & Gamble Company Rotary shear
US4428265A (en) * 1981-10-22 1984-01-31 Industrial Tools Inc. Tape slitter axial loading system
FI77593C (fi) * 1987-06-26 1989-04-10 Valmet Paper Machinery Inc Staolkonstruktion som anvaends vid laengsskaerning av materialbanor.

Also Published As

Publication number Publication date
JP3164365B2 (ja) 2001-05-08
FR2655588A1 (fr) 1991-06-14
US5365821A (en) 1994-11-22
JPH05502824A (ja) 1993-05-20
DE69009495T2 (de) 1994-11-24
EP0505461A1 (de) 1992-09-30
DE69009495D1 (de) 1994-07-07
FR2655588B1 (de) 1995-01-06
WO1991009711A1 (fr) 1991-07-11

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