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EP0982104B1 - Méthode ainsi que dispositif pour déplacer le couteau circulaire d'une machine pour la coupe de rouleaux de papier ou d'objets similaires - Google Patents

Méthode ainsi que dispositif pour déplacer le couteau circulaire d'une machine pour la coupe de rouleaux de papier ou d'objets similaires Download PDF

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Publication number
EP0982104B1
EP0982104B1 EP19980830510 EP98830510A EP0982104B1 EP 0982104 B1 EP0982104 B1 EP 0982104B1 EP 19980830510 EP19980830510 EP 19980830510 EP 98830510 A EP98830510 A EP 98830510A EP 0982104 B1 EP0982104 B1 EP 0982104B1
Authority
EP
European Patent Office
Prior art keywords
saw
support
orbit
rocking arm
point
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
EP19980830510
Other languages
German (de)
English (en)
Other versions
EP0982104A3 (fr
EP0982104A2 (fr
Inventor
Alessandro De Matteis
Sergio Landucci
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.)
MTC Macchine Trasformazione Carta SRL
Original Assignee
MTC Macchine Trasformazione Carta SRL
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 MTC Macchine Trasformazione Carta SRL filed Critical MTC Macchine Trasformazione Carta SRL
Priority to EP19980830510 priority Critical patent/EP0982104B1/fr
Priority to DE69814853T priority patent/DE69814853T2/de
Publication of EP0982104A2 publication Critical patent/EP0982104A2/fr
Publication of EP0982104A3 publication Critical patent/EP0982104A3/fr
Application granted granted Critical
Publication of EP0982104B1 publication Critical patent/EP0982104B1/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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely
    • 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
    • B26D1/157—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 rotating about a movable axis
    • B26D1/16—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 rotating about a movable axis mounted on a movable arm or the like

Definitions

  • the present invention generally relates to paper converting machines, and more precisely it relates to a transversal cutting machine of the type having a rocking saw for logs of paper and the like for the production of rolls of toilet paper, all purpose and industrial rolls, stacks of napkins and the like.
  • the invention relates to a method for driving a saw and causing it to follow a complex orbit.
  • the invention relates to a drive apparatus of a saw that carries out such method.
  • Transversal cutting machines are known for making rolls or stacks of paper, for example rolls of toilet paper, general purpose towels, napkins and the like, which are supplied with logs of paper wound upstream.
  • one or more logs are placed on a bench for their stepped conveying. Then, the downstream ends of the logs pass in turn through a cutting off section and are held by a clamp device so that a rocking saw is driven through the paper for cutting off in succession the rolls or stacks. More precisely, before of each lowering motion of the saw onto the logs, the latter are pushed forward axially for a distance equal to the length of each final roll or stack. The logs are held only at the moment of the cut by means of a clamping device which allows their sliding in the stepped conveying as well.
  • Means are provided for synchronising the stepped movement of the log and the moment in which the saw is raised between two consecutive cuts.
  • most of machines are equipped with means for pushing the logs and means for rocking the saw support with independent motors, synchronised by programmable means.
  • the existing machines have means for driving the saw that can be improved both inertially, and on the effectiveness of the cut and of the cutting time.
  • additional complex means are provided, further to the components of the drive apparatus of the orbit.
  • transversal cutting machine according to the present invention as defined in claim 1 comprising:
  • the rocking frame comprises:
  • the first rocking arm is made of two parts and means are provided for adjusting its length, whereby the orbit of the saw can be adjusted for recovering the wear of the saw.
  • the length of the first rocking arm is adjustable for example by means of an electromechanical jack that adjusts the relative position of its parts.
  • crank preferably, is made of two arms bent with respect to each other and integral to each other by means of a coupling that allows the adjustment of the angle thereof. In this way the adjustment of the angle changes the distance between the axes of the crank thus changing the cutting parameters.
  • both the lengths of at least one of the two arms and the point of pivot of the first rocking arm at the drive shaft can be changed.
  • the invention is also defined by a method according to claim 6.
  • a transversal cutting machine comprises a base 1, capable of slidingly supporting a log of paper 2, for example toilet paper to cut off into rolls by means of a rocking saw 3, supported and driven by a drive apparatus 4 fixed to a frame 5.
  • a base 1 capable of slidingly supporting a log of paper 2, for example toilet paper to cut off into rolls by means of a rocking saw 3, supported and driven by a drive apparatus 4 fixed to a frame 5.
  • Saw 3 is shown in the position of top dead center of its orbit and, with dotted line, in the position of bottom dead center in which the saw has been completely driven into log 2. During the cut log 2 is held by a clamping device 6.
  • the drive apparatus 4 for driving saw 3 comprises means for adjusting the orbit versus the wear of the saw after a sharpening and according to the different cutting conditions to which the machine must be adapted.
  • the drive apparatus 4 comprises:
  • the first rocking arm 14 is made of two parts 14a and 14b, which can slide with respect to each other operated by a electromechanical jack 18. In this way, the change of length can be carried out automatically after each sharpening step of saw 3 for compensating its reduction of diameter by adjusting the trajectory of the sharpened edge for continuing the cutting off of the logs into rolls.
  • the first rocking arm 14, moreover, have portion 14a which comprises a plurality of linking housings 19 to the eccentric point 10a of drive shaft 10.
  • portion 14a which comprises a plurality of linking housings 19 to the eccentric point 10a of drive shaft 10.
  • crank mechanism 15 are variable, similarly to the change of length of first rocking arm 14, in order to adjust the orbit and then the cutting parameters.
  • Circular saw 3 of the cutting off machine therefore, follows an orbit which is the composition of two plane motions, the former being given by the first rocking arm 14 to the first point 12a of support 12 and the latter being given by crank mechanism 15 to second point 12b of support 12.
  • the former motion can be changed with continuity without stopping the machine for adjusting the trajectory of the sharpened edge of the saw after each sharpening thus allowing the continuation of the cut.
  • Both motions moreover, can be changed stopping the machine for adjusting in a discrete way the orbit of saw 3 and the approaching speed between saw and log, as well as for adjusting the exit speed and the angle of the orbit of the saw throughout the log versus the different types and size of the material to cut.

Landscapes

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

Claims (8)

  1. Machine de coupe transversale de rouleaux de papier et objets analogues, comprenant :
    une scie (3),
    un support (12) qui porte de façon pivotante ladite scie (3) ainsi que des éléments de transmission du mouvement de rotation à ladite scie (3),
    un appareil d'entraínement pour entraíner ledit support (12), qui abaisse cycliquement ladite scie (3) sur lesdits rouleaux (2) afin de les couper en tronçons,
    caractérisée en ce que ledit appareil d'entraínement est relié de façon pivotante à deux points distincts (12a, 12b) dudit support (12), de sorte que ladite scie (3) suit une orbite composite obtenue par combinaison de deux mouvements d'entraínement distincts communiqués auxdits points (12a, 12b).
  2. Machine de coupe transversale selon la revendication 1, dans laquelle ledit appareil d'entraínement comprend :
    un arbre d'entraínement (10) ;
    un premier bras oscillant (14) dont les extrémités pivotent respectivement à un premier point (12a) dudit support (12) et à un premier point excentré (10a) dudit arbre d'entraínement (10) ;
    un mécanisme à manivelle (15) comportant une manivelle (17), qui pivote à un deuxième point (12b) du support (12), et un deuxième bras oscillant (16) qui pivote à un deuxième point (10b) dudit arbre d'entraínement (10).
  3. Machine de coupe transversale selon la revendication 2, dans laquelle ledit premier bras oscillant (14) est constitué d'au moins deux parties (14a, 14b) mutuellement solidaires, des moyens étant prévus pour permettre auxdites parties de coulisser l'une par rapport à l'autre ou d'être verrouillées l'une à l'autre, pour le changement de longueur dudit premier bras oscillant (14).
  4. Machine de coupe transversale selon la revendication 3, dans laquelle lesdits moyens qui permettent auxdites parties (14a, 14b) dudit premier bras oscillant (14) de coulisser ou d'être verrouillées l'une par rapport à. l'autre comprennent un vérin électromécanique (18) qui effectue ledit changement de longueur après chaque affûtage de ladite scie (3) pour compenser sa réduction de diamètre.
  5. Machine de coupe transversale selon la revendication 2, dans laquelle ladite manivelle (17) dudit mécanisme à manivelle (15) est formée par deux leviers (17a, 17b) coudés l'un par rapport à l'autre, des moyens étant prévus pour régler l'angle entre lesdits leviers, de sorte que la longueur de ladite manivelle est réglable.
  6. Procédé de coupe de rouleaux de papier et analogues en tronçons, comprenant les étapes de :
    installation d'une scie rotative sur un support ;
    oscillation dudit support suivant une orbite, ladite orbite passant à travers ledit rouleau à couper ;
    caractérisé en ce que ladite orbite est obtenue par l'intermédiaire d'au moins deux points distincts dudit support et par communication de mouvements d'entraínement distincts auxdits points, de sorte que l'orbite est composite.
  7. Procédé de coupe selon la revendication 6, dans lequel la course communiquée auxdits points distincts est réglable et ladite orbite est modifiable après chaque affûtage de ladite scie.
  8. Procédé de coupe selon la revendication 6, dans lequel la course d'un premier et d'un deuxième points dudit support est engendrée respectivement au moyen d'un premier bras oscillant de longueur réglable et d'un mécanisme à manivelle de forme variable.
EP19980830510 1998-08-21 1998-08-21 Méthode ainsi que dispositif pour déplacer le couteau circulaire d'une machine pour la coupe de rouleaux de papier ou d'objets similaires Expired - Lifetime EP0982104B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19980830510 EP0982104B1 (fr) 1998-08-21 1998-08-21 Méthode ainsi que dispositif pour déplacer le couteau circulaire d'une machine pour la coupe de rouleaux de papier ou d'objets similaires
DE69814853T DE69814853T2 (de) 1998-08-21 1998-08-21 Verfahren sowie Vorrichtung zum Bewegen des Kreismessers einer Maschine zum Schneiden von Papierrollen oder dergleichen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19980830510 EP0982104B1 (fr) 1998-08-21 1998-08-21 Méthode ainsi que dispositif pour déplacer le couteau circulaire d'une machine pour la coupe de rouleaux de papier ou d'objets similaires

Publications (3)

Publication Number Publication Date
EP0982104A2 EP0982104A2 (fr) 2000-03-01
EP0982104A3 EP0982104A3 (fr) 2000-03-15
EP0982104B1 true EP0982104B1 (fr) 2003-05-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980830510 Expired - Lifetime EP0982104B1 (fr) 1998-08-21 1998-08-21 Méthode ainsi que dispositif pour déplacer le couteau circulaire d'une machine pour la coupe de rouleaux de papier ou d'objets similaires

Country Status (2)

Country Link
EP (1) EP0982104B1 (fr)
DE (1) DE69814853T2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI981573A1 (it) * 1998-07-09 2000-01-09 Italconverting Srl Dispositivo di taglio di rotoli di materiale in foglio
US7526984B2 (en) 2003-06-05 2009-05-05 Todd R. Morrison Roll cutting apparatus
ES2451569T3 (es) * 2004-03-31 2014-03-27 M T C - Macchine Trasformazione Carta S.R.L. Método de corte transversal de cintas continuas de papel y elementos similares
ITFI20060338A1 (it) * 2006-12-27 2008-06-28 Futura Spa Dispositivo e metodo per il raffreddamento dei mezzi di taglio dei logs in macchine troncatrici.
ITRN20120058A1 (it) * 2012-12-20 2014-06-21 Sica Spa Apparato e metodo di taglio di tubi in materiale termoplastico.
CN103640041B (zh) 2013-09-09 2016-02-10 宇宙纸巾技术有限公司 圆刀切割装置
CN104002324B (zh) * 2014-01-13 2016-08-17 浙江鼎业机械设备有限公司 一种卫生纸巾分切机
PL2921268T3 (pl) * 2014-03-19 2017-06-30 Universal Tissue Technology S.R.L. Maszyna do cięcia bel
CN104044168B (zh) * 2014-06-20 2016-03-09 浙江鹤翔印刷机械有限公司 纸筒破碎装置
CN107394560A (zh) * 2017-06-19 2017-11-24 昆山思柯马自动化设备有限公司 插线端子快速裁切机构
CN109227662A (zh) * 2018-09-24 2019-01-18 安徽秋华建筑工程有限公司 一种岩棉保温板用可均匀切块的切割装置
CN117565125B (zh) * 2024-01-15 2024-03-12 烟台誉衡管业有限公司 一种电力施工mpp电力管切割装置及其使用方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855733A (en) * 1956-12-28 1958-10-14 American Chain & Cable Co Abrasive cutting wheel method
US3540338A (en) * 1968-11-21 1970-11-17 James Mcewan Inc Cutoff machine
DE2012361C2 (de) * 1970-03-16 1972-01-13 Hobema Maschinenfabrik Hermann H. Raths, 4000 Düsseldorf Kreismesserschneidemaschine

Also Published As

Publication number Publication date
EP0982104A3 (fr) 2000-03-15
DE69814853T2 (de) 2004-05-06
EP0982104A2 (fr) 2000-03-01
DE69814853D1 (de) 2003-06-26

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