ITTO20130468A1 - Gruppo di alimentazione a rulli per una macchina segatrice automatica per il taglio di tubi in modalita' bitubo - Google Patents

Gruppo di alimentazione a rulli per una macchina segatrice automatica per il taglio di tubi in modalita' bitubo

Info

Publication number
ITTO20130468A1
ITTO20130468A1 IT000468A ITTO20130468A ITTO20130468A1 IT TO20130468 A1 ITTO20130468 A1 IT TO20130468A1 IT 000468 A IT000468 A IT 000468A IT TO20130468 A ITTO20130468 A IT TO20130468A IT TO20130468 A1 ITTO20130468 A1 IT TO20130468A1
Authority
IT
Italy
Prior art keywords
rollers
pair
tubes
axis
rotation
Prior art date
Application number
IT000468A
Other languages
English (en)
Italian (it)
Inventor
Marco Casagranda
Edoardo Trentin
Original Assignee
Adige Spa
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 Adige Spa filed Critical Adige Spa
Priority to IT000468A priority Critical patent/ITTO20130468A1/it
Priority to US14/288,509 priority patent/US9278458B2/en
Priority to CA2852837A priority patent/CA2852837C/en
Priority to TW103118980A priority patent/TWI629137B/zh
Priority to JP2014115411A priority patent/JP6377962B2/ja
Priority to IN1480DE2014 priority patent/IN2014DE01480A/en
Priority to ZA2014/04124A priority patent/ZA201404124B/en
Priority to CN201410247161.0A priority patent/CN104227770B/zh
Priority to RU2014122973A priority patent/RU2656903C2/ru
Priority to KR1020140068479A priority patent/KR102222141B1/ko
Priority to MX2014006777A priority patent/MX349307B/es
Priority to BR102014013790-4A priority patent/BR102014013790B1/pt
Priority to PL14171460.0T priority patent/PL2810727T3/pl
Priority to HUE14171460A priority patent/HUE029780T2/en
Priority to ES14171460.0T priority patent/ES2594127T3/es
Priority to PT141714600T priority patent/PT2810727T/pt
Priority to EP14171460.0A priority patent/EP2810727B9/en
Publication of ITTO20130468A1 publication Critical patent/ITTO20130468A1/it

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0625Arrangements for feeding or delivering work of other than sheet, web, or filamentary form by endless conveyors, e.g. belts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D47/00Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
    • B23D47/04Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for feeding, positioning, clamping, or rotating work
    • B23D47/06Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for feeding, positioning, clamping, or rotating work for stock of indefinite length
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22Feeding members carrying tools or work
    • B23Q5/34Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16Cutting rods or tubes transversely
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16Cutting rods or tubes transversely
    • B26D3/161Cutting rods or tubes transversely for obtaining more than one product at a time
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/24Cutting work characterised by the nature of the cut made; Apparatus therefor to obtain segments other than slices, e.g. cutting pies
    • B26D3/26Cutting work characterised by the nature of the cut made; Apparatus therefor to obtain segments other than slices, e.g. cutting pies specially adapted for cutting fruit or vegetables, e.g. for onions
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/06Arrangements for feeding or delivering work of other than sheet, web, or filamentary form
    • B26D7/0683Arrangements for feeding or delivering work of other than sheet, web, or filamentary form specially adapted for elongated articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B25/00Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
    • B27B25/02Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees with feed and pressure rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27BSAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B25/00Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
    • B27B25/08Feeding devices able to be attached to any sawing machine
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G21/00Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
    • B65G21/20Means incorporated in, or attached to, framework or housings for guiding load-carriers, traction elements or loads supported on moving surfaces
    • B65G21/2045Mechanical means for guiding or retaining the load on the load-carrying surface
    • B65G21/2063Mechanical means for guiding or retaining the load on the load-carrying surface comprising elements not movable in the direction of load-transport
    • B65G21/209Mechanical means for guiding or retaining the load on the load-carrying surface comprising elements not movable in the direction of load-transport for augmenting or creating a pression force between the load and the load-carrying surface
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00Cutting
    • Y10T83/647With means to convey work relative to tool station
    • Y10T83/664Roller
    • Y10T83/6641Plural independent rollers for feed of plural distinct work

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Wood Science & Technology (AREA)
  • Sawing (AREA)
  • Road Paving Machines (AREA)
IT000468A 2013-06-06 2013-06-06 Gruppo di alimentazione a rulli per una macchina segatrice automatica per il taglio di tubi in modalita' bitubo ITTO20130468A1 (it)

Priority Applications (17)

Application Number Priority Date Filing Date Title
IT000468A ITTO20130468A1 (it) 2013-06-06 2013-06-06 Gruppo di alimentazione a rulli per una macchina segatrice automatica per il taglio di tubi in modalita' bitubo
US14/288,509 US9278458B2 (en) 2013-06-06 2014-05-28 Feed unit for an automatic saw cutting machine for cutting tubes in double-tube cutting mode
CA2852837A CA2852837C (en) 2013-06-06 2014-05-30 Feed unit for an automatic saw cutting machine for cutting tubes in double-tube cutting mode
TW103118980A TWI629137B (zh) 2013-06-06 2014-05-30 用於切割雙管模式之自動切鋸機的進給單元
JP2014115411A JP6377962B2 (ja) 2013-06-06 2014-06-04 ダブル管切断モードで管を切断する自動鋸切断機のための供給ユニット
IN1480DE2014 IN2014DE01480A (https=) 2013-06-06 2014-06-04
ZA2014/04124A ZA201404124B (en) 2013-06-06 2014-06-05 Feed unit for an automatic saw cutting machine for cutting tubes in double-tube cutting mode
CN201410247161.0A CN104227770B (zh) 2013-06-06 2014-06-05 用于以双管切割模式切割管材的自动锯切割机的进给单元
RU2014122973A RU2656903C2 (ru) 2013-06-06 2014-06-05 Подающее устройство для автоматической распилочной машины для резки труб в сдвоенном режиме резки
KR1020140068479A KR102222141B1 (ko) 2013-06-06 2014-06-05 이중 튜브 커팅 모드에서 튜브를 커팅하기 위한 자동 톱 커팅 기계용 공급 유닛
MX2014006777A MX349307B (es) 2013-06-06 2014-06-06 Unidad de alimentación para una máquina de corte de sierra para cortar tubos en corte de doble tubo.
BR102014013790-4A BR102014013790B1 (pt) 2013-06-06 2014-06-06 Unidade de alimentação para uma máquina de corte automática para cortar tubos em modo de corte de duplo tubo
PL14171460.0T PL2810727T3 (pl) 2013-06-06 2014-06-06 Zespół podający dla pilarki automatycznej do cięcia w trybie cięcia dwóch rur
HUE14171460A HUE029780T2 (en) 2013-06-06 2014-06-06 Dosing unit for automatic sawing machine for tandem sawing of pipes
ES14171460.0T ES2594127T3 (es) 2013-06-06 2014-06-06 Unidad de alimentación para una máquina de corte de sierra automática para cortar tubos en modo de corte de doble tubo
PT141714600T PT2810727T (pt) 2013-06-06 2014-06-06 Unidade de alimentação para uma máquina de corte automática para cortar tubos em modo de corte de duplo tubo
EP14171460.0A EP2810727B9 (en) 2013-06-06 2014-06-06 Feed unit for an automatic saw cutting machine for cutting tubes in double-tube cutting mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000468A ITTO20130468A1 (it) 2013-06-06 2013-06-06 Gruppo di alimentazione a rulli per una macchina segatrice automatica per il taglio di tubi in modalita' bitubo

Publications (1)

Publication Number Publication Date
ITTO20130468A1 true ITTO20130468A1 (it) 2014-12-07

Family

ID=49000579

Family Applications (1)

Application Number Title Priority Date Filing Date
IT000468A ITTO20130468A1 (it) 2013-06-06 2013-06-06 Gruppo di alimentazione a rulli per una macchina segatrice automatica per il taglio di tubi in modalita' bitubo

Country Status (17)

Country Link
US (1) US9278458B2 (https=)
EP (1) EP2810727B9 (https=)
JP (1) JP6377962B2 (https=)
KR (1) KR102222141B1 (https=)
CN (1) CN104227770B (https=)
BR (1) BR102014013790B1 (https=)
CA (1) CA2852837C (https=)
ES (1) ES2594127T3 (https=)
HU (1) HUE029780T2 (https=)
IN (1) IN2014DE01480A (https=)
IT (1) ITTO20130468A1 (https=)
MX (1) MX349307B (https=)
PL (1) PL2810727T3 (https=)
PT (1) PT2810727T (https=)
RU (1) RU2656903C2 (https=)
TW (1) TWI629137B (https=)
ZA (1) ZA201404124B (https=)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3058346B1 (fr) * 2016-11-10 2019-06-28 Groupe Meyer-France Installation de decoupe d'une piece en materiau metallique ou composite
CN110253159B (zh) * 2019-07-08 2021-03-26 济南邦德激光股份有限公司 一种五轴三联动激光切管机
CN110370354B (zh) * 2019-08-15 2024-02-23 港华辉信工程塑料(中山)有限公司 应用于管件坯体的自动定型及裁切废料设备
WO2021133781A2 (en) * 2019-12-24 2021-07-01 Black & Decker Inc. Flywheel driven fastening tool
EP3888863A1 (de) * 2020-03-31 2021-10-06 A O Schallinox GmbH Schneidevorrichtung
CN112591304A (zh) * 2020-11-25 2021-04-02 浙江金科复合材料科技有限公司 一种具有耐老化生产聚乙烯埋地双壁波纹管的装置
EP4063049A1 (en) * 2021-03-24 2022-09-28 Airbus Operations, S.L.U. Device and method for drilling with automatic drilling parameters adaptation
CN113894355A (zh) * 2021-10-11 2022-01-07 佛山豪德数控机械有限公司 一种垂直挂式锯板机构
CN114160878A (zh) * 2021-12-23 2022-03-11 广州永胜钢铁制品有限公司 一种不锈钢管切割方法及其装置
CN114505902A (zh) * 2022-02-17 2022-05-17 陈国森 一种大型pvc管道加工用切割装置
CN117301146B (zh) * 2023-12-01 2024-01-30 太原天翔保温管有限公司 一种保温管切割装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1481437A1 (de) * 1967-03-02 1969-05-14 Schmitz Soehne Gmbh J H Kugelrollgang fuer Durchmesser- und Transportrichtungsaenderung
US3855053A (en) * 1972-01-31 1974-12-17 Free Flow Packaging Corp Improved packing material
DE4400038A1 (de) * 1994-01-05 1995-07-06 Grimm Hans W Dr Ing Vorrichtung zum Schneiden von Papierrollen aus mehreren Stangen gleichzeitig, bei getaktetem Vorschub der Einzelstangen
EP1136198A2 (en) * 2000-03-17 2001-09-26 Giovanni Gambini Multiple cutting machine for rolls of kitchen paper and/or toilet paper
JP2009056516A (ja) * 2007-08-30 2009-03-19 Aisho:Kk パイプ切断装置

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2647595A1 (de) * 1976-10-21 1978-04-27 Karl Volz Maschinenbau Maschine zum schneiden von papier
DE2725284A1 (de) * 1977-06-02 1978-12-07 Mannesmann Ag Vorrichtung zum spannen von einzelnen oder mehreren rohren oder profilen
US4160471A (en) * 1977-08-22 1979-07-10 Domtar Inc. Power infeed for chipper
SU1235670A1 (ru) * 1984-12-11 1986-06-07 Научно-производственное объединение "Медоборудование" Фрезерно-отрезной станок
SU1449257A1 (ru) * 1986-04-11 1989-01-07 Минское специальное конструкторское бюро протяжных станков Устройство дл зажима и выгрузки заготовок отрезного станка
JP2567426B2 (ja) * 1987-11-10 1996-12-25 株式会社アマダ 切断機の送材装置
JPH0818176B2 (ja) * 1989-11-24 1996-02-28 昭和アルミニウム株式会社 定尺切断装置
US5271304A (en) * 1990-07-03 1993-12-21 Carruthers Equipment Co. Automatic food slicing machine
DE59201006D1 (de) * 1991-05-07 1995-02-02 Wintersteiger Gmbh & Co Gattersäge.
JPH0586420U (ja) * 1992-04-24 1993-11-22 株式会社オリイ パイプ定寸カッター
JP2906116B2 (ja) * 1994-11-14 1999-06-14 忍 大西 長尺ワークの順送り自動加工方法及びその装置
JP2759772B2 (ja) * 1995-02-17 1998-05-28 有限会社加地製作所 ログペーパー切断装置
JPH09295081A (ja) * 1996-05-08 1997-11-18 Shinobu Onishi 長尺パイプの順送り自動加工装置
JP4201912B2 (ja) * 1999-03-24 2008-12-24 日新製鋼株式会社 溶接管の管端処理装置
JP4361993B2 (ja) * 1999-11-22 2009-11-11 株式会社アマダ 切断加工方法およびその装置
TW547289U (en) * 2002-06-28 2003-08-11 Rainbow Trust Ind Co Ltd Cutting machine for metal net layered tubular bodies
ITPI20070030A1 (it) * 2007-03-16 2008-09-17 Ga Vo Meccanica Di Tancredi & C Snc Apparecchiatura per giuntare anime tubolari
TWM361395U (en) * 2009-01-06 2009-07-21 Huan-Cheng Lian Cutting machine for tubular material
CN202540371U (zh) * 2012-04-27 2012-11-21 安徽贝士德塑料科技有限公司 塑料管材自动切割机

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1481437A1 (de) * 1967-03-02 1969-05-14 Schmitz Soehne Gmbh J H Kugelrollgang fuer Durchmesser- und Transportrichtungsaenderung
US3855053A (en) * 1972-01-31 1974-12-17 Free Flow Packaging Corp Improved packing material
DE4400038A1 (de) * 1994-01-05 1995-07-06 Grimm Hans W Dr Ing Vorrichtung zum Schneiden von Papierrollen aus mehreren Stangen gleichzeitig, bei getaktetem Vorschub der Einzelstangen
EP1136198A2 (en) * 2000-03-17 2001-09-26 Giovanni Gambini Multiple cutting machine for rolls of kitchen paper and/or toilet paper
JP2009056516A (ja) * 2007-08-30 2009-03-19 Aisho:Kk パイプ切断装置

Also Published As

Publication number Publication date
EP2810727B9 (en) 2016-09-21
ES2594127T3 (es) 2016-12-15
JP2015006723A (ja) 2015-01-15
BR102014013790A2 (pt) 2015-12-29
KR20140143339A (ko) 2014-12-16
RU2014122973A (ru) 2015-12-10
KR102222141B1 (ko) 2021-03-04
CA2852837C (en) 2021-04-13
EP2810727A1 (en) 2014-12-10
MX349307B (es) 2017-07-19
HUE029780T2 (en) 2017-04-28
EP2810727B1 (en) 2016-05-18
ZA201404124B (en) 2016-08-31
CA2852837A1 (en) 2014-12-06
PL2810727T3 (pl) 2016-11-30
CN104227770A (zh) 2014-12-24
RU2656903C2 (ru) 2018-06-07
CN104227770B (zh) 2017-09-01
US20140360330A1 (en) 2014-12-11
US9278458B2 (en) 2016-03-08
IN2014DE01480A (https=) 2015-07-24
TW201521952A (zh) 2015-06-16
PT2810727T (pt) 2016-07-14
BR102014013790B1 (pt) 2022-10-11
MX2014006777A (es) 2015-03-26
TWI629137B (zh) 2018-07-11
JP6377962B2 (ja) 2018-08-22

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