EP0415116A1 - Arbre porte-lames pour un dispositif à coupe transversale rotatif et synchrone avec une coupe de cisaillement - Google Patents

Arbre porte-lames pour un dispositif à coupe transversale rotatif et synchrone avec une coupe de cisaillement Download PDF

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Publication number
EP0415116A1
EP0415116A1 EP90114848A EP90114848A EP0415116A1 EP 0415116 A1 EP0415116 A1 EP 0415116A1 EP 90114848 A EP90114848 A EP 90114848A EP 90114848 A EP90114848 A EP 90114848A EP 0415116 A1 EP0415116 A1 EP 0415116A1
Authority
EP
European Patent Office
Prior art keywords
knife
strip
cutter
knife drum
drum according
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.)
Withdrawn
Application number
EP90114848A
Other languages
German (de)
English (en)
Inventor
Hans Hornung
Eduard Voltz
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.)
Bielomatik Leuze GmbH and Co KG
Original Assignee
Valmet Strecker GmbH
Bielomatik Leuze GmbH and Co KG
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 Valmet Strecker GmbH, Bielomatik Leuze GmbH and Co KG filed Critical Valmet Strecker GmbH
Publication of EP0415116A1 publication Critical patent/EP0415116A1/fr
Withdrawn legal-status Critical Current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
    • B26D1/56—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/62—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
    • B26D1/626—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 travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
    • 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
    • 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
    • B26D2007/2685—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member flexible mounting means

Definitions

  • the invention relates to a knife drum for synchronous rotary cross cutters according to the preamble of claim 1.
  • DE-PS 20 21 061 From DE-PS 20 21 061 it is known to mount one or both of the male strips that come into engagement with one another in the case of cross cutters for shear cuts, for example by means of an inflatable hose running behind them. The suspension also clamps the male connector to hold it in place.
  • DE-PS 22 44 741 this principle has also been adopted for synchronous cross cutters with two counter-rotating knife drums, the peripheral speed of which on the cutting edge corresponds to the feed speed of the material web to be cut.
  • DE-PS 29 45 669 in addition, in order to improve the cutting geometry, the elastically flexible knife strip in question has been given a contact surface wound around the cutting edge, the shape of which is transferred to the knife strip by means of the elastic contact pressure.
  • the invention is intended to remedy this. It is therefore the object of the invention to design a knife drum according to the generic term in such a way that the insertion of the sprung knife bar is simplified and that the spring of the knife bar only needs to be adjusted in accordance with the mutual contact force of the knife bars coming into engagement which is desirable for the cut.
  • the knife bar now clamped flat, can be easily replaced. Nevertheless, the tilting moment effective on the knife bar and holding bar can be kept essentially constant. Furthermore, due to the fixed clamping of the male connector in the retaining bar, the suspension is released from its previous double function, so that it can be designed or adjusted solely according to the desired mutual contact pressure of the male connectors. In addition, the fixed clamping of the male connector prevents any buckling of the same, which also increases the cut security.
  • the knife drum according to FIG. 1 has, in mirror symmetry with respect to the sides of the drum axis, in each case a bar-shaped knife bar support 2 which runs essentially parallel to the drum axis.
  • the knife-edge support 2 contains an essentially rectangular groove 4, which has a lateral extension 6, extending slightly inclined with respect to the drum axis.
  • a retaining strip 8 is arranged for the relevant knife strip 10, which is pressed by an inflatable tube 12 lying in the extension 6 to the opposite band 14 as a contact surface.
  • the retaining strip 8 is composed of two parts, 16 and 18, which are held together by screws 20.
  • the knife strip 10 is clamped flat between the two parts 16 and 18 and held in position 18 by a corresponding shoulder 22.
  • the holding bar 8 is tiltable in the manner of a rocking beam in a corresponding hollow edge 28 at the base of the groove in such a way that it opposes that applied by the hose 12 Spring force can move away from the wall 14.
  • the tilting axis A formed by the edges 24 and 28 is oriented such that it extends from one in the wandering knife engagement point P of the vertical web S going out to be cut assumes a substantially constant distance a.
  • the tilting moment caused by the cutting force on the knife bar 10 together with the holding bar 8, which is to be compensated for by the suspension in the form of the hose 12 is essentially constant.
  • the retaining bar By two springs 30 to both ends of the retaining bar 8, of which only one is indicated schematically here, the retaining bar is in place regardless of the centrifugal force acting on it during operation, i. H. edge 24 is held in engagement with edge 28.
  • edge 24 For the rest, the shoulder 26 and correspondingly the weighing edge 24 can be divided into individual sections which are spaced apart from one another.
  • Knife edge support 40 and cover 44 have a plurality of mutually aligned bores 46 and 48, in which screw bolts 50 are inserted, lying side by side over the width of the knife drum.
  • Spherical spherical bearing rings 56 are placed on the bolts 50, each held by a shoulder 52 and a snap ring 54, in such a way that their center points Z on the tilting axis A (which appears to be shortened in perspective and only apparently coincides with the center axis of one of the bolts 50) lie.
  • a retaining strip 58 which is adapted in shape to that of paragraph 42 has transverse bores 60 into which bushes 62 are inserted.
  • a bearing ring 66 is inserted, which accommodates the relevant bearing ring 56 in such a way that the two bearing rings together form a self-aligning bearing, 68.
  • the bolts 50 are individually turned according to the required position of the respective self-aligning bearing and thus also the tilt axis A.
  • the position of the self-aligning bearings 68 could be adjustable by screwing in uniform screw bolts to a greater or lesser extent.
  • the knife bar 70 is clamped into an outside groove 72 of the holding bar 58 by means of wedge pieces 74 which are pulled inwards by screws 76 into a clamping position, the knife bar 70 being simultaneously is pressed against the bottom of the groove 72.
  • the shoulder 42 of the knife bar support 40 leaves the holding bar 58 space to rotate about the tilt axis A.
  • the holding strip 58 is in turn pressed against an opposite wall 82 of the shoulder 42 as a contact surface by an inflatable tube 78, which in this case lies in a corresponding recess 80 in the cover 44.
  • the knife bar carrier 90 in question in turn has a shoulder 92, which is closed off by a cover 94.
  • a holding strip 98 is arranged in the groove 96 thus formed, in which the relevant knife strip 100 is clamped in a similar manner by means of wedge pieces 102, as in the case of FIG. 2.
  • the retaining strip 98 has a radially inner side with respect to the drum axis from a recess 104, into which a strip-shaped projection 106 extending from the bottom of the groove 96 protrudes.
  • a leaf spring 116 which in this case forms the joint for the tiltable mounting of the holding strip, is clamped on the holding strip 98 as well as on the extension 106 by means of screws 108 and 110 and clamping strips 112 and 114.
  • Approach 106, terminal strips 112 and 114 and leaf spring 116 can be divided into individual sections arranged at mutual distances.
  • the holding strip 98 which leaves the groove 96 sufficient freedom of movement, is pressed by an inflatable tube 118, which is mounted in the cover 94, against an opposite wall 120, as a contact surface.
  • FIG. 4 corresponds essentially to the embodiment of FIG. 3 with regard to the clamping of the relevant male connector 130 in the relevant retaining bar 132, with the exception that the wedge piece 102 of the latter is replaced by an essentially cylindrical clamping piece 134.
  • the retaining strip 132 is accommodated in a kind of groove 136 of the knife edge support 138 and is supported in the direction of a side wall 140 of the groove by an inflatable tube 142.
  • the tiltable suspension of the retaining strip 132 is, in so far similar to the example of Fig. 2, realized by an axle bearing.
  • a series of successive bearing parts in the form of bearing blocks 144 are arranged within the groove 136, which, with the interposition of sleeve-shaped spring elements 146 made of rubber or the like, surround coaxial physical bearing axes 148.
  • the bearing axles 148 are an integral part of second bearing blocks, 150, on the holding strip 132.
  • the sleeve-shaped spring elements 146 are firmly clamped between the bore 152 of the respective bearing block 144 and the respective bearing axis 148 and / or are bonded to both, and thus to these two bearing means to form a non-rotatable connection.
  • the spring elements 146 are able to deliver tangential as well as radial spring forces which, despite certain tolerance deviations in the knife or bearing geometry, ensure perfect, gentle knife engagement. Otherwise, those of the Tangential spring forces originating from spring elements 146 may make the lateral support by the inflatable hose 142 superfluous, but the additional presence of the inflatable hose 142 allows the lateral spring or supporting force to be determined in turn independently of the radial spring force on the part of the spring elements 146 and accordingly precisely for what purpose it only requires the choice of the air pressure in the hose.
  • the above-described storage and clamping means which are shown by way of example, are interchangeable, as well as other suitable storage and clamping means can be selected.
  • the inflatable tube 12, 80, 118 or 142 can be replaced by other suspension means, such as a solid rubber strip or metallic springs, while on the other hand suspension means such as an inflatable air hose can also be used to clamp the male connector in the retaining strip which, of course, should then be harder than those which are used for the resilient support of the retaining strip.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Details Of Cutting Devices (AREA)
EP90114848A 1989-08-29 1990-08-02 Arbre porte-lames pour un dispositif à coupe transversale rotatif et synchrone avec une coupe de cisaillement Withdrawn EP0415116A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893928594 DE3928594A1 (de) 1989-08-29 1989-08-29 Messertrommel fuer rotations-gleichlaufquerschneider mit scherendem schnitt
DE3928594 1989-08-29

Publications (1)

Publication Number Publication Date
EP0415116A1 true EP0415116A1 (fr) 1991-03-06

Family

ID=6388131

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90114848A Withdrawn EP0415116A1 (fr) 1989-08-29 1990-08-02 Arbre porte-lames pour un dispositif à coupe transversale rotatif et synchrone avec une coupe de cisaillement

Country Status (3)

Country Link
EP (1) EP0415116A1 (fr)
JP (1) JPH0392290A (fr)
DE (1) DE3928594A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0900637A2 (fr) * 1997-09-04 1999-03-10 Mitsubishi Heavy Industries, Ltd. Machine de coupe rotative

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2051250A6 (es) * 1991-03-26 1994-06-01 Rojas Manuel Jimenez Mejoras en el objeto de la patente principal n{ 9100972 por:"dispositivo de sujecion de flejes en cilindros de perforacion y corte para maquinaria de artes graficas.
DE19749170C5 (de) * 1997-11-07 2010-02-11 Sms Siemag Aktiengesellschaft Messerhalter mit einem in einem Messerspalt angeordneten Messer und Scherwalze in die solch ein Messerhalter eingesetzt ist
FI981036A (fi) * 1998-05-11 1999-11-12 Valmet Corp Kaksoisrotaatioleikkurin terän välyksen säätölaite

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945669C2 (de) * 1979-11-12 1983-12-08 Dr. Otto C. Strecker Kg, 6102 Pfungstadt Gleichlauf-Rotationsquerschneider
DE3641487A1 (de) * 1986-12-04 1988-06-16 Hauni Werke Koerber & Co Kg Schneidvorrichtung zum abtrennen von abschnitten von einem bewegten materialstreifen
DE3743530A1 (de) * 1987-12-22 1989-07-06 Hauni Werke Koerber & Co Kg Querschneider

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2945669C2 (de) * 1979-11-12 1983-12-08 Dr. Otto C. Strecker Kg, 6102 Pfungstadt Gleichlauf-Rotationsquerschneider
DE3641487A1 (de) * 1986-12-04 1988-06-16 Hauni Werke Koerber & Co Kg Schneidvorrichtung zum abtrennen von abschnitten von einem bewegten materialstreifen
DE3743530A1 (de) * 1987-12-22 1989-07-06 Hauni Werke Koerber & Co Kg Querschneider

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0900637A2 (fr) * 1997-09-04 1999-03-10 Mitsubishi Heavy Industries, Ltd. Machine de coupe rotative
EP0900637A3 (fr) * 1997-09-04 2000-03-29 Mitsubishi Heavy Industries, Ltd. Machine de coupe rotative

Also Published As

Publication number Publication date
JPH0392290A (ja) 1991-04-17
DE3928594A1 (de) 1991-03-07

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