EP0982106B1 - Vorrichtung zur Entfernung von Abfallstücken in einer Maschine zum Schneiden von Papierrollen o. dgl - Google Patents

Vorrichtung zur Entfernung von Abfallstücken in einer Maschine zum Schneiden von Papierrollen o. dgl Download PDF

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Publication number
EP0982106B1
EP0982106B1 EP19980830506 EP98830506A EP0982106B1 EP 0982106 B1 EP0982106 B1 EP 0982106B1 EP 19980830506 EP19980830506 EP 19980830506 EP 98830506 A EP98830506 A EP 98830506A EP 0982106 B1 EP0982106 B1 EP 0982106B1
Authority
EP
European Patent Office
Prior art keywords
portions
trimmed
cut
logs
conveyor means
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
EP19980830506
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English (en)
French (fr)
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EP0982106A1 (de
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.)
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Publication date
Application filed by MTC Macchine Trasformazione Carta SRL filed Critical MTC Macchine Trasformazione Carta SRL
Priority to EP19980830506 priority Critical patent/EP0982106B1/de
Priority to DE1998623185 priority patent/DE69823185T2/de
Publication of EP0982106A1 publication Critical patent/EP0982106A1/de
Application granted granted Critical
Publication of EP0982106B1 publication Critical patent/EP0982106B1/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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/18—Means for removing cut-out material or waste
    • 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
    • B26D2210/00—Machines or methods used for cutting special materials
    • B26D2210/11—Machines or methods used for cutting special materials for cutting web rolls

Definitions

  • the present invention generally relates to the field of paper converting machines and more precisely it relates to an apparatus for conveying the cut portions, such as rolls or stacks, and for removing the trimmed portions in a transversal cutting machine of logs of paper and the like.
  • the transversal cutting machines have just the object of cutting off into rolls or shorter stacks the logs of paper and comprise normally a bench with one or more slides onto which the logs to cut off are placed in turn.
  • a stepped conveying system pushes a log portion beyond the cutting line of a rocking saw.
  • a clamping device holds the log upstream and downstream of the cutting line. Once cut off, the roll or the stack is carried away by a conveying apparatus provided downstream of the cutting zone.
  • the front and back ends of the log are then trimmed and the trimmed portions are taken away along an outlet conveyor.
  • the stepped movement of the log is carried out by means of pushers that protrude from a chain, which translates centrally in the slide on which the log lays.
  • a first problem of the existing machines is that the pushers have a limited surface and in particular are substantially rectangular strips. This shape is due to the limited clearance at the moment of the passage in the zone of conveying away the rolls or stacks. In fact, the removal is normally carried out by means of parallel belts close to one another, whereby the pushers, which are fastened to a loop chain, in the outlet zone have to pass between two belts and then turn back.
  • the limited surface and the strip-like shape of the pushers have the consequence of a not regular cut of the logs end, in particular when the last roll or stack is cut off from the trimmed portion. In fact, since the trimmed portion is thin, the trimmed portion bends thus preventing the saw from cutting precisely.
  • a second problem of the existing machines is that the trimmed portions, at the beginning and end of the log, once cut, often lose their compact shape and become loose. In this way they disturb the outlet zone, where the belts cannot always convey them, and sometimes jam and block the passage of the rolls or stacks.
  • pushing devices are provided that, after that sensors distinguish the trimmed portions from the rolls, push selectively the trimmed portions sideways.
  • "traps" are provided, such as zones of fall of the trimmed portions obtained by distancing some belts so that they allow the passage of the rolls, which have larger size, causing only the trimmed portions to fall. In both these systems, the unevenness of the trimmed portions and their tendency to loosen cause the above-described problems.
  • the displacement of the outlet means allows the passage of the pushers also when they have large surface.
  • the pushers comprise a large flat element, for example circular, whereby the logs are pushed by a larger surface thus allowing a cut of the trimmed portions with fewer defects.
  • an apparatus 1 for conveying rolls 2 and removing trimmed portions 3, according to the present invention, is arranged downstream of a transversal cutting machine 4.
  • the latter comprises a loading and supporting bench 5 of logs 6 to cut into rolls, a cutting zone 7 of the logs 6 by means of a rocking saw 8 and a gripping device 9.
  • Apparatus 1 comprises a first conveyor belt 15 and a second conveyor belt 16 fastened to a base 17.
  • the first conveyor belt 15 is bound to the base 17 by means of a frame 18 pivotally connected about transversal hinges 19, whereby the conveyor belt 15, integrally to frame 18, can move away from the outlet zone by rotating to a position raised with respect to a transport plane 20 of log 6 and of rolls 2.
  • the transversal cutting machine 4 produces a row of rolls 2 up to the end of log 6. At every cut saw 8 lowers and gripping device 9 clamps log 6. At the last cut, the last roll 2a is separated from a trimmed portion 3a brought by pusher 10. Therefore, saw 8 severs the last roll 2a from trimmed portion 3a by dropping onto the end of the log.
  • quick conveyor 12 carries last roll 2a away, while trimmed portion 3a is brought, as shown in figure 1, towards apparatus 1.
  • first conveyor belt 15 As soon as last roll 2a has passed on the first conveyor belt 15, the latter is raised to the position shown with dotted line in figure 1, allowing at the same time the fall of trimmed portion 3a and the passage of pusher 10 that rotates about sprocket 22 following in succession the positions indicated with dotted lines.
  • the transversal cutting machine has started to cut a second log 6, and after the first cut a second trimmed portion 3b is severed and carried by quick conveyor 12.
  • a collector not shown receives trimmed portions 3a, 3b.
  • the first conveyor 15 is lowered by cylinder 21.
  • the above mentioned advantages are achieved disturbing the least possible the rolls to carry away, collecting in a "clean and safe” way the trimmed portions and, allowing the use of a pusher 10 of size large enough to allow a regular separation of the first or last roll from the trimmed portions by means of saw 8.
  • the first conveyor belt 15 can also be moved away from the outlet zone in a different way than that shown, for example by rotating it about a hinge longitudinal with respect to the direction of transport of the rolls, or displacing it vertically or horizontally, respectively above or at the side of the outlet zone.

Claims (5)

  1. Vorrichtung zum Befördern von geschnittenen Stücken, ausgehend von Papiermaterialklötzen und dergleichen, wie für die Herstellung von Rollen (2, 2a) oder Stapeln, und zum Entfernen der Abfallstücke (3a, 3b), die auf einer Querschneidmaschine angeordnet ist, wobei die Maschine Folgendes umfasst:
    eine Schneidzone (7, 8), in der die Klötze (6) in Stücke (2, 2a) geschnitten werden;
    Schiebemittel (10, 11), die die Klötze (6) durch die Schneidzone schieben;
    Auslassmittel für die abgeschnittenen Stücke in einer stromabwärts von der Schneidzone angeordneten Auslasszone, wobei die Auslassmittel in der Auslasszone ein erstes Fördermittel (15) und ein zweites Fördermittel (16), die an einer Basis (17) befestigt sind, umfassen, dadurch gekennzeichnet, dass das erste Fördermittel (15) mittels eines Rahmens (18) mit der Basis (17) verbunden ist, wobei der Rahmen auf einer zum zweiten Fördermittel (16) weisenden Seite um ein Querscharnier (19) schwenkbar verbunden ist, wobei das erste Fördermittel (15) sich von der Auslasszone weg bewegen kann, indem es sich in einer Transportrichtung (20) der abgeschnittenen Stücke (2) um das Scharnier (19) dreht und so die Abfallstücke (3a, 3b) von den abgeschnittenen Stücken (2, 2a) umlenkt, so dass die Abfallstücke den zweiten Förderer (16) nicht erreichen und gesammelt werden können.
  2. Fördervorrichtung nach Anspruch 1, bei der das Schiebemittel großflächige Schieber (10) umfasst, durch die die Klötze (6) gleichmäßig geschoben werden, wodurch das Abschneiden des Abfallstücks (3a) von der letzten Rolle (2a) mit größerer Abstützung erfolgen kann, wobei das erste Fördermittel (15) sich von der Auslasszone weg bewegt, damit auch die großflächigen Schieber (10) passieren können.
  3. Verfahren zum Befördern von geschnittenen Stücken, ausgehend von Papiermaterialklötzen und dergleichen, wie für die Herstellung von Rollen (2, 2a) oder Stapeln, und zum Entfernen der Abfallstücke (3a, 3b) nach einer Schneidphase, bei der man
    die Klötze (6) durch eine Schneidzone (7) transportiert;
    die Klötze in Stücke (2, 2a) schneidet;
    die abgeschnittenen Stücke (2, 2a) und die Abfallstücke (3a, 3b) zur Auslasszone (1) stromabwärts von der Schneidzone (7) abführt und
    die Abfallstücke (3a, 3b) am Ende des Abführschrittes, wenn die Abfallstücke passieren, von den abgeschnittenen Stücken (2, 2a) umlenkt,
    dadurch gekennzeichnet, dass man beim Umlenken ein erstes Fördermittel (15) auf einer zum zweiten Fördermittel weisenden Seite bezüglich eines zweiten Fördermittels (16) dreht, wobei beide Fördermittel dazu vorgesehen sind, die abgeschnittenen Stücke wegzutragen, wobei sich der erste Förderer (15) aufgrund der Drehung bezüglich einer Transportrichtung (20) der abgeschnittenen Stücke (2) von der Auslasszone weg bewegen kann, so dass die Abfallstücke den zweiten Förderer (16) nicht erreichen und gesammelt werden können.
  4. Verfahren zum Befördern von abgeschnittenen Stücken (2, 2a) nach Anspruch 8, bei dem das Transportieren der Klötze mittels großflächiger Schieber (10) durchgeführt wird, wobei durch das Umlenken der Abfallstücke bezüglich der abgeschnittenen Stücke (2, 2a) auch gestattet wird, dass die großflächigen Schieber (10) ohne Behinderung durch das Fördermittel (15) passieren können.
  5. Verfahren zum Befördern von abgeschnittenen Stücken nach Anspruch 9, bei dem das Umlenken nach dem Abführen des letzten abgeschnittenen Stücks (2a) jedes Klotzes durchgeführt wird, wobei die Verschiebung des Fördermittels bewirkt,
    dass ein erstes Abfallstück (3a) fällt, das von einem der Schieber (10) herangebracht wird, der frei passieren und zum Schieben eines weiteren Klotzes (6) zurückkehren kann,
    dass ein zweites Abfallstück (3b) fällt, bevor das erste abgeschnittene Stück (2) des folgenden Klotzes (6) passiert,
    wobei das Fördermittel (15) gleich nach dem Passieren des zweiten Abfallstücks (3b) in eine solche Position zurückkehrt, die einen regelmäßigen Transport der folgenden abgeschnittenen Stücke (2) gestattet.
EP19980830506 1998-08-21 1998-08-21 Vorrichtung zur Entfernung von Abfallstücken in einer Maschine zum Schneiden von Papierrollen o. dgl Expired - Lifetime EP0982106B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19980830506 EP0982106B1 (de) 1998-08-21 1998-08-21 Vorrichtung zur Entfernung von Abfallstücken in einer Maschine zum Schneiden von Papierrollen o. dgl
DE1998623185 DE69823185T2 (de) 1998-08-21 1998-08-21 Vorrichtung zur Entfernung von Abfallstücken in einer Maschine zum Schneiden von Papierrollen o. dgl

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19980830506 EP0982106B1 (de) 1998-08-21 1998-08-21 Vorrichtung zur Entfernung von Abfallstücken in einer Maschine zum Schneiden von Papierrollen o. dgl

Publications (2)

Publication Number Publication Date
EP0982106A1 EP0982106A1 (de) 2000-03-01
EP0982106B1 true EP0982106B1 (de) 2004-04-14

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EP19980830506 Expired - Lifetime EP0982106B1 (de) 1998-08-21 1998-08-21 Vorrichtung zur Entfernung von Abfallstücken in einer Maschine zum Schneiden von Papierrollen o. dgl

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EP (1) EP0982106B1 (de)
DE (1) DE69823185T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102785259A (zh) * 2012-07-31 2012-11-21 福建省石狮市华联服装配件企业有限公司 胶索自动切割机的尾部弃料处理设备

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20011667A1 (it) * 2001-07-31 2003-01-31 Giovanni Gambini Dispositivo per la eliminazione dei rifili di rotoli o log di materiale nastriforme
ITMI20021703A1 (it) 2002-07-30 2004-01-30 Giovanni Gambini Dispositivo migliorato per l'eleminazione dei rifili di rotoli o log di materiale nastriforme
ITFI20070279A1 (it) 2007-12-12 2009-06-13 Futura Spa Dispositivo per lo scarto dei rifili che si formano con il taglio dei logs di materiale cartaceo
EP2958414B1 (de) 2013-02-25 2019-04-10 1045929 Ontario Limited Vorrichtung zum ausheben eines rasens und system zur entsorgung eines defekten rollrasens
CN110405822B (zh) * 2019-09-02 2021-07-30 海盐县新艺印刷有限公司 一种印刷机印刷前用原纸裁切设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE491788C (de) * 1930-02-13 August Fomm Fa Papierschneidemaschinentisch
US4462287A (en) * 1982-12-02 1984-07-31 Crown Zellerbach Corporation Apparatus for culling cant ends
IT1233279B (it) * 1989-04-05 1992-03-26 Perini Finanziaria Spa Troncatrice per il taglio di bastoni di materiale cartaceo e simili

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102785259A (zh) * 2012-07-31 2012-11-21 福建省石狮市华联服装配件企业有限公司 胶索自动切割机的尾部弃料处理设备

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DE69823185T2 (de) 2005-04-21
EP0982106A1 (de) 2000-03-01
DE69823185D1 (de) 2004-05-19

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