EP0982105A1 - Dispositif de serrage pour des rouleaux de papier ou des produits similaires - Google Patents

Dispositif de serrage pour des rouleaux de papier ou des produits similaires Download PDF

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Publication number
EP0982105A1
EP0982105A1 EP98830507A EP98830507A EP0982105A1 EP 0982105 A1 EP0982105 A1 EP 0982105A1 EP 98830507 A EP98830507 A EP 98830507A EP 98830507 A EP98830507 A EP 98830507A EP 0982105 A1 EP0982105 A1 EP 0982105A1
Authority
EP
European Patent Office
Prior art keywords
transversal
top clamp
clamp element
cutting machine
logs
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.)
Granted
Application number
EP98830507A
Other languages
German (de)
English (en)
Other versions
EP0982105B1 (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 EP19980830507 priority Critical patent/EP0982105B1/fr
Priority to DE1998619710 priority patent/DE69819710T2/de
Publication of EP0982105A1 publication Critical patent/EP0982105A1/fr
Application granted granted Critical
Publication of EP0982105B1 publication Critical patent/EP0982105B1/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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D2007/013—Means for holding or positioning work the work being tubes, rods or logs
    • 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 paper converting machines and, more precisely, it relates to a transversal cutting machine of logs of paper and the like, for the production of rolls of toilet paper, general purpose towels, industrial rolls, stacks of napkins and the like.
  • the invention relates to a device for clamping the log during the cut off step of a saw.
  • Transversal cutting machines for making small rolls or stacks of paper, for example rolls of toilet paper, general purpose towels, stacks of napkins and the like, that are supplied with logs of paper rolled upstream.
  • one or more logs are normally loaded on a stepped pushing bench. Then, the end of the logs being cut is in turn held by means of clamps and a rocking saw is driven in succession into the paper thus cutting off the logs into rolls or stacks. More precisely, before that the saw is driven onto the logs, the latter are pushed forward axially for distances equal to the height of each roll or stack. Then, the logs are blocked only at the moment of the cut by means of a clamping device that allows, instead, their sliding during a pushing step.
  • the clamping device has normally an encircling shape so that the log does not collapse but at the same time the log cannot slide at the moment of the cut.
  • a transversal cutting machine should be adjustable to cut into portion logs of different diameter, according to the production needs.
  • Each clamping device therefore, must be equipped with means for clamping the log with interchangeable or adjustable clamping surfaces, for adapting itself in turn to a range of different diameters.
  • a first type of known clamping device provides the replacement of the elements for clamping the log, further to a stop of the machine.
  • This type of machine requires long stops, since the elements of the clamping device must first be disassembled after removal of their driving apparatus, then must be replaced with other elements of different size, and finally assembled again along with their driving apparatus for starting again the machine.
  • a second type of cut off machines provides a holding device with flexible surfaces, which however are of composite and expensive structure.
  • the cut off step is carried out by means of a quickly rotating belt saw or circular saw, whose support has an oscillating movement which can be reciprocating, rotating along a circle or along a more complex orbit.
  • Means are provided for synchronising the stepped movement of the log and the moment in which the saw is at the top dead center 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.
  • transversal cutting machine of the type comprising a clamping device in two sections crossed by a rocking saw.
  • the clamping device comprises a support base for the log and a top clamp element capable of pushing from the above the log against the base.
  • the top clamp element is arranged on transversal bars supported by uprights of variable length whereby the height of the top clamp element can be adjusted according to the different range of diameters.
  • the base comprises a pair of symmetrical bottom supports and a pair of interchangeable bottom shells engaging with the bottom supports in a releasable way.
  • the top clamp element comprises top supports and interchangeable top shells engaging with the top supports in a releasable way.
  • the shells engage with the supports preferably by means of releasable lock reference pins.
  • a transversal cutting machine comprises a bench 1, capable of slidingly supporting a log of paper 2, for example toilet paper, to cut off into rolls by means of a rocking and rotating saw 3, supported and driven by a mechanical transmission 3a fixed to a frame 3b.
  • the saw 3 is shown in the position of top dead center of its orbit and, with dotted line, it is shown in the position of bottom dead center in which the saw has been completely driven into log 2.
  • the log 2 is held, in the cutting zone, by a clamping device 4, divided in two sections 5 and 6 respectively upstream and downstream of the slot 7 through which saw 3 passes.
  • Each section respectively consists in a base, 5a and 6a, and a top clamp element 5b, 6b, that pushes the log 2 from the above against base 5a, 6a for holding it in synchronism with the lowering of the saw 3 that passes through slot 7.
  • section 5 In the preferred embodiment, only section 5, the downstream one, completely opens itself with respect to log 2, for releasing the cut roll 2a, whereas section 6, the upstream one, continues to hold loosely log 2, so that it slightly brakes the log when pushed forward.
  • Section 6 has a funnel shaped opening for making easier the inlet of the log 2 to cut off into rolls.
  • bases 5a and 6a consist in symmetrical bottom shells, that are fixed by means of quickly releasable lock pins 8 to symmetrical bottom supports 8a integral to bench 1.
  • the two symmetrical bottom shells 5a, 6a allow the passage between them of a pusher 9, that pushes forward log 2 and is dragged by a loop chain 9a through bench 1 and protruding from it.
  • the top clamp elements 5b and 6b comprises, instead, top shells, releasably fixed to transversal bars horizontal 10 and 11 by means of quick releasable lock pins 12a, 12b.
  • transversal bar 10 is releasably locked by means of pins 12a to transversal bar 10 not directly, but by means of a cylinder 13.
  • Transversal bar 10 (fig. 2 and 3) is supported by uprights 14 and 15, to the first of which is also pivotally connected.
  • transversal bar 11 (fig. 2 and 4) is supported by uprights 16 and 17 to the first of which is also pivotally connected.
  • Upright 17 is discontinued by a cylinder 20 that adjusts the pressure of shell 6b onto log 2, thus having a damping function.
  • the top clamp element 6b is releasably locked by means of pins 12b directly to transversal bar 11.
  • Uprights 14-17 are linked to a height-adjusting device comprising a drive unit 19 that operates vertical screwed shafts 22a, 22b and 22c. In this way, it is possible to move transversal bars 10 and 11 translating them vertically parallel to themselves. More precisely, by operating the drive unit it is possible to lower or raise uprights 15 and 17 integral to one another by a fork 18 linked to one of the vertical screwed shafts 22a. Screwed shafts 22b and 22c of uprights 14,16 are operated, in synchronism to shafts 22a of uprights 15 and 17, by a chain 21 extending through bench 1.
  • the clamping device according to the invention is flexible according to different ranges of diameters of the log to cut off into rolls.
  • the surrounding shape of both shells 5b and 6b and bases 5a and 6a is enough to assure a pressure on the log 2 without that this it escapes during the cut, which is carried out at high frequency.
  • the peculiarity of the clamping device according to the invention is therefore that of assuring a sufficient flexibility to different ranges of diameters with easy replacement of the shells and quick adjustment of the position of the top clamp element. This, in particular, is possible with the presence of the interchangeable shells and the motorised positioning of the height of transversal bars 10 and 11.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
EP19980830507 1998-08-21 1998-08-21 Dispositif de serrage pour des rouleaux de papier ou des produits similaires Expired - Lifetime EP0982105B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19980830507 EP0982105B1 (fr) 1998-08-21 1998-08-21 Dispositif de serrage pour des rouleaux de papier ou des produits similaires
DE1998619710 DE69819710T2 (de) 1998-08-21 1998-08-21 Spannvorrichtung für Papierrolle oder ähnliche Produkte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19980830507 EP0982105B1 (fr) 1998-08-21 1998-08-21 Dispositif de serrage pour des rouleaux de papier ou des produits similaires

Publications (2)

Publication Number Publication Date
EP0982105A1 true EP0982105A1 (fr) 2000-03-01
EP0982105B1 EP0982105B1 (fr) 2003-11-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19980830507 Expired - Lifetime EP0982105B1 (fr) 1998-08-21 1998-08-21 Dispositif de serrage pour des rouleaux de papier ou des produits similaires

Country Status (2)

Country Link
EP (1) EP0982105B1 (fr)
DE (1) DE69819710T2 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002049814A1 (fr) * 2000-12-21 2002-06-27 Paper Converting Machine Company Appareil destine a supporter un produit circulaire allonge pendant une operation de coupe
WO2007004925A1 (fr) * 2005-06-30 2007-01-11 Sca Hygiene Products Ab Procédé et dispositif pour débiter une bûche en papier ou un matériau similaire
EP1582320B1 (fr) * 2004-03-31 2008-07-16 M T C - Macchine Trasformazione Carta S.r.l. Dispositif de serrage pour machines pour faire la coupe transversale des pièces longues de papier
ITMI20120155A1 (it) * 2012-02-06 2013-08-07 Gambini Int Sa Apparecchiatura perfezionata per taglio di log di carta in una pluralita' di rotoli
ITPI20120055A1 (it) * 2012-05-07 2013-11-08 Idea Pcm S R L "pressina per troncatore a diametri regolabili"
US9796104B2 (en) 2013-10-16 2017-10-24 MTorres Tissue SRL Log clamping device
CN112207875A (zh) * 2020-09-22 2021-01-12 张稳定 一种可防磨损的定距切割pe管材加工用裁剪装置
CN112372586A (zh) * 2020-07-29 2021-02-19 江苏中钧新材料科技有限公司 一种断桥铝加工台

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109531654B (zh) * 2018-10-30 2020-10-02 湖北兴欣科技股份有限公司 多重增强钢塑复合管切割装置
CN110170909B (zh) * 2019-03-28 2024-01-26 北京百慕合金有限责任公司 柔性托举装置、砂轮切割设备及切割方法
CN110341080B (zh) * 2019-07-12 2021-10-08 赵雪莉 一种纤维级聚丙烯管切割方法
CN110815346B (zh) * 2019-11-27 2021-01-26 天长市诚信塑业有限公司 一种有机玻璃管切割无裂纹分切设备
CN111168738B (zh) * 2020-01-06 2021-07-13 浙江农丰软管股份有限公司 一种用于冷热缩软管的自动裁切装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049954A (en) * 1957-06-03 1962-08-21 Fmc Corp Apparatus for cutting articles
US3118337A (en) * 1964-01-21 Cut-off machines
US5105699A (en) * 1990-08-15 1992-04-21 James Dickson Slicing orifice
EP0555190A2 (fr) * 1992-02-07 1993-08-11 FABIO PERINI S.p.A. Procédé et machine pour la coupe de rouleaux de papier ou similaires
DE4308032A1 (de) * 1993-03-13 1994-09-15 Schmidt Rsa Entgrat Tech Verfahren und Vorrichtung zum Ablängen von Stücken von einem stangenförmigen Profilmaterial

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118337A (en) * 1964-01-21 Cut-off machines
US3049954A (en) * 1957-06-03 1962-08-21 Fmc Corp Apparatus for cutting articles
US5105699A (en) * 1990-08-15 1992-04-21 James Dickson Slicing orifice
EP0555190A2 (fr) * 1992-02-07 1993-08-11 FABIO PERINI S.p.A. Procédé et machine pour la coupe de rouleaux de papier ou similaires
DE4308032A1 (de) * 1993-03-13 1994-09-15 Schmidt Rsa Entgrat Tech Verfahren und Vorrichtung zum Ablängen von Stücken von einem stangenförmigen Profilmaterial

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002049814A1 (fr) * 2000-12-21 2002-06-27 Paper Converting Machine Company Appareil destine a supporter un produit circulaire allonge pendant une operation de coupe
US6532851B2 (en) 2000-12-21 2003-03-18 Paper Converting Machine Company Apparatus for supporting product during cutting
EP1582320B1 (fr) * 2004-03-31 2008-07-16 M T C - Macchine Trasformazione Carta S.r.l. Dispositif de serrage pour machines pour faire la coupe transversale des pièces longues de papier
EP1970175A1 (fr) * 2004-03-31 2008-09-17 M T C - Macchine Trasformazione Carta S.r.l. Dispositif de serrage pour machines de découpe transversale de blocs de papier
US8261646B2 (en) 2004-03-31 2012-09-11 Mtc-Macchine Trasformazione Carta S.R.L. Clamping device for transversal cutting machines of logs of paper
WO2007004925A1 (fr) * 2005-06-30 2007-01-11 Sca Hygiene Products Ab Procédé et dispositif pour débiter une bûche en papier ou un matériau similaire
ITMI20120155A1 (it) * 2012-02-06 2013-08-07 Gambini Int Sa Apparecchiatura perfezionata per taglio di log di carta in una pluralita' di rotoli
EP2623279A1 (fr) * 2012-02-06 2013-08-07 Gambini International S.A. Appareil de découpe de blocs de papier amélioré dans plusieurs rouleaux
ITPI20120055A1 (it) * 2012-05-07 2013-11-08 Idea Pcm S R L "pressina per troncatore a diametri regolabili"
US9796104B2 (en) 2013-10-16 2017-10-24 MTorres Tissue SRL Log clamping device
CN112372586A (zh) * 2020-07-29 2021-02-19 江苏中钧新材料科技有限公司 一种断桥铝加工台
CN112207875A (zh) * 2020-09-22 2021-01-12 张稳定 一种可防磨损的定距切割pe管材加工用裁剪装置

Also Published As

Publication number Publication date
DE69819710T2 (de) 2004-09-23
EP0982105B1 (fr) 2003-11-12
DE69819710D1 (de) 2003-12-18

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