EP0982104B1 - Verfahren sowie Vorrichtung zum Bewegen des Kreismessers einer Maschine zum Schneiden von Papierrollen oder dergleichen - Google Patents
Verfahren sowie Vorrichtung zum Bewegen des Kreismessers einer Maschine zum Schneiden von Papierrollen oder dergleichen Download PDFInfo
- 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
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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)
- Transversale Schneidemaschine für Papierrollen oder dergleichen, miteiner Säge (3),einer Halterung (12), die die Säge (3) schwenkbar zusammen mit Übertragungsverbindungen für die Rotationsbewegung der Säge trägt,einer Antriebsvorrichtung, um die Halterung (12) anzutreiben, die zyklisch die Säge (3) auf die Rollen (2) senkt, die sie in Teile schneidet,
dase die Antriebsvorrichtung schwenkbar mit zwei unterschiedlichen Punkten (12a, 12b) der Halterung (12) verbunden ist, wobei die Säge (3) einer zusammengesetzten Raumkurve folgt, die dadurch entsteht, dass zwei unterschiedliche Antriebsbewegungen kombiniert werden, die an den beiden Punkten (12a, 12b) anaetzen. - Transversale Schneidemaschine nach Anspruch 1, wobeidie Antriebsvorrichtung aufweist:eine Antriebswelle (10);einen ersten Schwungarm (14) dessen Enden schwenkbar an einem ersten Punkt (12a) der Halterung (12) und einem ersten exzentrischen Punkt (10a) der Antriebswelle (10) gelagert sind;einen Kurbelmechanismus (15) mit einer Kurbel (17), schwenkbar gelagert an einem zweiten Punkt (12b) der Halterung (12) und einem zweiten Schwungarm (16), schwenkbar gelagert an einem zweiten Punkt (10b) der Antriebswelle (10).
- Transversale Schneidemaschine nach Anspruch 2, dadurch gekennzeichnet, dass der erste Schwungarm (14) aus mindestens zwei integralen Teilen besteht (14a, 14b), mit Mitteln ausgestallet, die erlauben, diese Teile gegeneinander zu verschieben und aneinander zu befestigen, um die Länge des ersten Schwungarmes (14) zu variieren.
- Transversale Schneidemaschine nach Anspruch 3, dadurch gekennzeichnet, dass die Mittel, die erlauben, die Teile (14a, 14b) des ersten Schwungarmes (14) gegeneinander zu verschieben und aneinander zu befestigen eine elektromechanische Hebevorrichtung (18) aufweisen, die nach jedem Schärfen der Säge (3) diese Längenänderung durchführt, um die Durchmesserverkleinerung zu kompensieren.
- Transversale Schneidemaschine nach Anspruch 2, dadurch gekennzeichnet, dass die Kurbel (17) des Kurbelmechanismus (15) aus zwei Hebeln (17a, 17b) gebildet wird, die gegeneinander abgewinkelt sind, mit Mitteln ausgestattet, um den Winkel zwischen diesen Hebeln einzustellen, womit die Länge der Kurbel regulierbar ist.
- Verfahren zum Schneiden von Papierrollen in Teile oder dergleichen, mit den Schritten:Anordnung von einer Kreissäge in einer Halterung;Schwingen der Halterung in einer Raumkurve, wobei die Raumkurve durch die Rolle geht, um sie abzuschneiden,
- Verfahren zum Abschneiden nach Anspruch 6 , dadurch gekennzeichnet, dass die Hubhöhe der unterschiedlichen Punkte einstellbar und die Raumkurve veränderlich ist nach jedem Schärfen der Säge.
- Verfahren zum Abschneiden nach Anspruch 6, dadurch gekennzeichnet, dass die Hubhöhe eines ersten und eines zweiten Punktes der Halterung jeweils gegeben ist mittels eines ersten Schwenkarmes mit einstellbarer Länge und einem Kurbelmechanismus unterschiedlicher Form.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69814853T DE69814853T2 (de) | 1998-08-21 | 1998-08-21 | Verfahren sowie Vorrichtung zum Bewegen des Kreismessers einer Maschine zum Schneiden von Papierrollen oder dergleichen |
EP19980830510 EP0982104B1 (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 (de) | 1998-08-21 | 1998-08-21 | Verfahren sowie Vorrichtung zum Bewegen des Kreismessers einer Maschine zum Schneiden von Papierrollen oder dergleichen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0982104A2 EP0982104A2 (de) | 2000-03-01 |
EP0982104A3 EP0982104A3 (de) | 2000-03-15 |
EP0982104B1 true EP0982104B1 (de) | 2003-05-21 |
Family
ID=8236768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19980830510 Expired - Lifetime EP0982104B1 (de) | 1998-08-21 | 1998-08-21 | Verfahren sowie Vorrichtung zum Bewegen des Kreismessers einer Maschine zum Schneiden von Papierrollen oder dergleichen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0982104B1 (de) |
DE (1) | DE69814853T2 (de) |
Families Citing this family (12)
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 |
DE602004015065D1 (de) * | 2004-03-31 | 2008-08-28 | Mtc Macchine Trasformazione | Spannvorrichtung für eine Maschine zum Querschneiden von stabförmigem Papiergut |
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 |
ES2619357T3 (es) * | 2014-03-19 | 2017-06-26 | Universal Tissue Technology S.R.L. | Registro de máquina de sierra |
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)
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 |
-
1998
- 1998-08-21 DE DE69814853T patent/DE69814853T2/de not_active Expired - Fee Related
- 1998-08-21 EP EP19980830510 patent/EP0982104B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0982104A2 (de) | 2000-03-01 |
DE69814853D1 (de) | 2003-06-26 |
EP0982104A3 (de) | 2000-03-15 |
DE69814853T2 (de) | 2004-05-06 |
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