EP0277260B1 - Vorrichtung zum Schneiden von folienartigen Werkstoffen - Google Patents

Vorrichtung zum Schneiden von folienartigen Werkstoffen Download PDF

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Publication number
EP0277260B1
EP0277260B1 EP87102828A EP87102828A EP0277260B1 EP 0277260 B1 EP0277260 B1 EP 0277260B1 EP 87102828 A EP87102828 A EP 87102828A EP 87102828 A EP87102828 A EP 87102828A EP 0277260 B1 EP0277260 B1 EP 0277260B1
Authority
EP
European Patent Office
Prior art keywords
cutting knife
knife
cutting
counterknife
ring
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
EP87102828A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0277260A3 (en
EP0277260A2 (de
Inventor
Reinhard Blatter
Heinz Dohnalek
Michael J. Mehltretter
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.)
IBSM Mehltretter GmbH
Original Assignee
IBSM Mehltretter 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 IBSM Mehltretter GmbH filed Critical IBSM Mehltretter GmbH
Publication of EP0277260A2 publication Critical patent/EP0277260A2/de
Publication of EP0277260A3 publication Critical patent/EP0277260A3/de
Application granted granted Critical
Publication of EP0277260B1 publication Critical patent/EP0277260B1/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
    • B26D1/01—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 involving a cutting member which does not travel with the work
    • B26D1/12—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/24—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 involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with another disc cutter
    • 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

Definitions

  • the invention relates to a device for cutting film webs, e.g. thin, coated plastic films for magnetic tapes and the like according to the preamble of claim 1.
  • a cutting device for thin web material is known from the generic DE-PS 968 269.
  • a circular cutting knife interacts with a likewise circular counter-knife offset in the radial direction to form circular scissors, the cutting knife being set axially against the counter-knife for cutting.
  • the circular cutting knife which is elastic on its own, is interchangeably received in a rigid support member, which in turn is axially displaceable on a hub flange of a knife shaft. The axial travel of the support member is suspended by a so-called worm spring and limited by a stop.
  • the aim of this arrangement of the support member is to produce a cutting unit which on the one hand consumes as little as possible of the material which is naturally expensive for cutting knives and on the other hand forms a frustoconical shape in the cutting area with simultaneous rigidity.
  • the area of the cutting unit in contact with the counter knife is offset in the axial direction against the worm spring, so that this results in a spring-loaded pressing.
  • this offset consists of a pure axial displacement of the cutting unit and, superimposed on it, due to the asymmetrical eccentric load from a tilting movement about a parallel to a radial axis.
  • the cutting unit with the cutting knife is completely rigid in comparison to the worm spring, there is practically no axial displacement due to the strong eccentric load and the narrow bearing seat.
  • the fit of the support member on the hub flange must be dimensioned with ample play in order to allow sufficient tilting movement and thus to allow an adjustment path with the consequence of a resilient pressure of the cutting unit on the counter knife.
  • this large play between the support member and the hub flange which in operation increases due to the constantly changing tilting movement of the knife shaft due to wear, it is not possible to maintain a very slight overlap of a few tenths of a millimeter in the radial direction receive; Such a small overlap is to be aimed for in order to achieve the highest cutting edge quality.
  • this tilting movement reduces the originally linear contact of the cutting knife on the counter knife to a two-point contact at the end of the line area while at the same time lifting the intermediate peripheral area of the cutting knife off the counter knife.
  • the cut edge quality of the processed web material deteriorates considerably.
  • this two-point system leads to increased edge pressure with the accompanying phenomenon of very heavy wear.
  • the invention has for its object to provide a cutting device which uses interchangeable cutting blades which are flat in the dismantled state and truncated cone-shaped in the installed state, an excellent cutting quality of the cut material and a long service life of the cutting knife being achieved. Furthermore, the radial overlap of the cutting knife and counter knife should be able to assume the lowest values and, at the same time, the arrangement of several knives with a minimal axial distance should be possible.
  • the feed path is completely absorbed by the elastic deformation of the cutting knife, so that an axially movable support member for the cutting knife is eliminated or can be formed in one piece with the hub flange.
  • the latter can, however, be firmly attached to the knife shaft without taking an axial path into account with the smallest axial dimensions. This enables the arrangement of several knives at small axial distances and thus the simultaneous cutting of very narrow strips.
  • the tilting movement is reduced to a minimum and is furthermore irrelevant for the function: namely, due to the bead-like deformation of the cutting knife in the contact area Possibly slight tilting is compensated for by the line or surface contact that always occurs as a result of the elastic clamping. Since the resilient abutment of the cutting knife against the counter knife is effected in itself by the elasticity of the cutting knife, the cutting knife can be centered on the hub flange regardless of a required tilting movement, and thus this fit can be measured with the tightest tolerances. This makes it possible to maintain a very small depth of overlap between the grooving knife and the cutting knife even over a longer operating period.
  • FIG. 1 shows the basic principle for the elastic clamping of an annular, flat cutting knife (1) when the cutting knife is deformed into a truncated cone shape while at the same time maintaining its elasticity, in particular in its outer edge region.
  • the two side surfaces of the cutting knife (1) are each subjected to line forces on circular lines with different diameters d and D, so that the originally flat cutting knife bulges into the shape of a truncated cone (shown in broken lines).
  • the forces, the knife material and the resulting axial deflection are dimensioned such that the cutting knife returns to its flat, planar shape after the force is removed. This advantageously enables the radial regrinding of an entire package of cutting knives placed against one another in one operation.
  • the cutting knife (1) Since the cutting knife (1) is only subject to line loads and is otherwise freely absorbed, its elasticity is retained even after the clamping, so that a bead-like deformation of the circumferential section in contact with the counter knife is made possible.
  • Figure 2 shows a clamping device for several cutting knives, in which the frustoconical curvature of the cutting knives (1) is achieved by a hub flange (5) which is divided into rings (5a) in the axial direction.
  • the rings (5a) are preferably of identical design and axially pressed together in the assembled state and firmly on a knife shaft (3).
  • the flat cutting knife is elastically deformed by circular edges (9 and 11) with the diameters d and D.
  • the width and the depth of a circumferential groove (7) formed by the rings (5a) are dimensioned such that the cutting knife (1) can deflect freely into the frustum of a cone.
  • the desired deflection can be achieved by appropriate dimensioning of the edges (9 and 11).
  • FIG. 2 shows the interaction of the cutting knife (1) with a slot knife (19) on a counter knife shaft (21) in the operating state. It can be seen that the cutting knife (1) remains in contact with the edges (9 and 11) and therefore the favorable interaction with the grooving knife (19) is ensured while maintaining the shape of the truncated cone.
  • the axial feed path when adjusting the knife shafts (3 and 21) against one another is dimensioned such that only a part of the deformation of the cutting knife (1) is canceled in its contacting circumferential area with the counter knife (13) and in a flap-like, flat-shaped contact with the counter knife transforms.
  • Figure 3 shows the implementation of the principle of Figure 1 with a plate spring (13) with a suitable coordination of the geometry and force ratios.
  • the outer diameter of the plate spring (13) is significantly larger than the outer circumference of a hub flange (5).
  • the plate spring (13) mainly serves to deform the cutting knife into its truncated cone shape, while the employment is taken up by the elastic bead-like deformation of its contacting peripheral region.
  • the hub flange (5) is also subdivided into rings (5a) with a stepped design, which additionally enables safe and exact mounting when the cutting knives (1) and the plate springs (13) are mounted on the knife shaft (3).
  • FIG. 4 shows an advantageous development of the device according to FIG. 3.
  • a ring (5a) is provided with two edges (17 and 17 ') which correspond to the inclination of the cutting knife surface as desired.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
EP87102828A 1986-12-09 1987-02-27 Vorrichtung zum Schneiden von folienartigen Werkstoffen Expired - Lifetime EP0277260B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3642005 1986-12-09
DE3642005A DE3642005C1 (de) 1986-12-09 1986-12-09 Vorrichtung zum Schneiden von folienartigen Werkstoffen

Publications (3)

Publication Number Publication Date
EP0277260A2 EP0277260A2 (de) 1988-08-10
EP0277260A3 EP0277260A3 (en) 1988-10-19
EP0277260B1 true EP0277260B1 (de) 1990-10-03

Family

ID=6315786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102828A Expired - Lifetime EP0277260B1 (de) 1986-12-09 1987-02-27 Vorrichtung zum Schneiden von folienartigen Werkstoffen

Country Status (4)

Country Link
EP (1) EP0277260B1 (nl)
JP (1) JPS63144995A (nl)
KR (1) KR920007590B1 (nl)
DE (1) DE3642005C1 (nl)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI80225C (fi) * 1988-03-14 1990-05-10 Valmet Paper Machinery Inc Oeverknivhaollare.
JPH0335994A (ja) * 1989-06-30 1991-02-15 Asahi Plast:Kk 合成樹脂成形品の曲面切断装置
US5215202A (en) * 1990-09-05 1993-06-01 Aichi Sharyo Co., Ltd. Mobile vehicular apparatus with aerial cabin
US5183168A (en) * 1990-09-05 1993-02-02 Aichi Sharyo Co. Ltd. Mobile vehicular apparatus with aerial cabin
US5268591A (en) * 1990-09-21 1993-12-07 Kabushiki Kaisha Aichi Corporation Upper power supply arrangement for mobile vehicular apparatus with aerial platform
US5107954A (en) * 1990-10-31 1992-04-28 Aichi Sharyo Co. Ltd. Control device for mobile vehicular apparatus with aerial platform
US5286159A (en) * 1990-11-08 1994-02-15 Kabushiki Kaisha Aichi Corporation Mobile vehicular apparatus with aerial working device
US5200674A (en) * 1990-11-16 1993-04-06 Aichi Sharyo Co., Ltd. Electric power supply device for mobile vehicular apparatus with aerial cabin having force-feedback manipulator
DE4132120A1 (de) * 1991-09-26 1993-04-01 Gerhardt Int As Vorrichtung zum durchschneiden, einschneiden, durchperforieren oder einperforieren von blattmaterial und verfahren zu seiner herstellung
US5621089A (en) * 1992-05-27 1997-04-15 Novo Nordisk Biotech, Inc. Nucleic acid constructs for the production of a Bacillus alkaline protease
US9050213B2 (en) 2012-03-30 2015-06-09 The Procter & Gamble Company Apparatuses and methods for making absorbent articles
US9039855B2 (en) 2012-03-30 2015-05-26 The Procter & Gamble Company Apparatuses and methods for making absorbent articles
US20130255861A1 (en) 2012-03-30 2013-10-03 Uwe Schneider Apparatuses and Methods for Making Absorbent Articles
US8440043B1 (en) 2012-03-30 2013-05-14 The Procter & Gamble Company Absorbent article process and apparatus for intermittently deactivating elastics in elastic laminates
US9028632B2 (en) 2012-03-30 2015-05-12 The Procter & Gamble Company Apparatuses and methods for making absorbent articles
DE102015005559B4 (de) * 2015-04-29 2023-07-27 Jörg von Seggern Maschinenbau GmbH Schneidevorrichtung mit zumindest zwei Obermessern zum Herausschneiden eines Streifens einer Folie
DE102019104029A1 (de) * 2019-02-18 2020-08-20 Sprick Gmbh Bielefelder Papier- Und Wellpappenwerke & Co. Vorrichtung zum Schneiden einer Verpackungsmaterialbahn

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE87283C (nl) *
DE319326C (de) * 1920-03-03 Ernst Gessner Federnd gelagertes Kreismesser fuer Laengsschneider
FR1040361A (fr) * 1950-08-05 1953-10-14 Goebel Ag Couteau circulaire pour couper des bandes de papier, carton, tissu ou analogue
DE968269C (de) * 1951-11-13 1958-01-30 Goebel Gmbh Maschf Kreismesser zum Schneiden von Papier, Karton, Gewebe od. dgl. sowie Verfahren zum Einsetzen des Schneidringes des Kreismessers in sein Tragglied
GB793270A (en) * 1955-11-24 1958-04-16 Goebel Gmbh Maschf Rotary cutter for slitting webs of paper, cardboard, fabrics or the like
DE2304092A1 (de) * 1973-01-27 1974-08-01 Goebel Gmbh Maschf Einrichtung zum laengsschneiden schmaler streifen
DE2405849C2 (de) * 1974-02-07 1984-10-31 Agfa-Gevaert Ag, 5090 Leverkusen Schneidevorrichtung zum Längsschneiden von Folienbahnen
DE2624875C3 (de) * 1976-06-03 1978-11-30 Dienes Werke Fuer Maschinenteile Gmbh & Co Kg, 5063 Overath Streifenschneidmaschine
JPS5867691U (ja) * 1981-10-30 1983-05-09 三菱マテリアル株式会社 スリツタ装置
JPS5915800A (ja) * 1982-07-19 1984-01-26 Kurita Water Ind Ltd フアウリング防止装置
JPS6339030Y2 (nl) * 1985-03-30 1988-10-13
JPS62241695A (ja) * 1986-04-14 1987-10-22 オルフア株式会社 シ−ト裁断装置

Also Published As

Publication number Publication date
JPS63144995A (ja) 1988-06-17
JPH057152B2 (nl) 1993-01-28
KR880007184A (ko) 1988-08-26
EP0277260A3 (en) 1988-10-19
DE3642005C1 (de) 1988-03-03
EP0277260A2 (de) 1988-08-10
KR920007590B1 (ko) 1992-09-08

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