EP1364757A1 - Vorrichtung sowie verfahren zum schneiden und zur entfernung von bahnen - Google Patents

Vorrichtung sowie verfahren zum schneiden und zur entfernung von bahnen Download PDF

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Publication number
EP1364757A1
EP1364757A1 EP01908277A EP01908277A EP1364757A1 EP 1364757 A1 EP1364757 A1 EP 1364757A1 EP 01908277 A EP01908277 A EP 01908277A EP 01908277 A EP01908277 A EP 01908277A EP 1364757 A1 EP1364757 A1 EP 1364757A1
Authority
EP
European Patent Office
Prior art keywords
die
loop region
cut
cutter roll
blade
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.)
Withdrawn
Application number
EP01908277A
Other languages
English (en)
French (fr)
Other versions
EP1364757A4 (de
Inventor
Hiroshi c/o ZUIKO CORPORATION TAKAYAMA
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.)
Zuiko Corp
Original Assignee
Zuiko Corp
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 Zuiko Corp filed Critical Zuiko Corp
Publication of EP1364757A1 publication Critical patent/EP1364757A1/de
Publication of EP1364757A4 publication Critical patent/EP1364757A4/de
Withdrawn legal-status Critical Current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
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1854—Means for removing cut-out material or waste by non mechanical means by air under pressure

Definitions

  • the present invention relates to a cut and removal apparatus and a cut and removal method for forming a through hole in a predetermined shape in a single-layer or multilayer sheet-like member.
  • a method using a cutter roll called a die cutter (see Japanese Laid-Open Patent Publication No. 8-71999 and No. 11-188698, for example).
  • the cutter roll die-cuts a sheet-like member in cooperation with an anvil roll.
  • no disclosure is made on how to dispose of die-cut portions die-cut off from the sheet-like member. If die-cut portions are not properly disposed of, a die of the cutter roll and the like may be clogged with such die-cut portions, and as a result, frequent cleaning of the cutter roll may be necessary. This reduces the serviceability ratio of the apparatus.
  • Japanese Laid-Open Patent Publication No. 8-52696 discloses an apparatus for producing sanitary goods by die-cutting a whole cloth sheet.
  • die-cut sanitary goods are passed to a feed roll to be transported to a next process stage.
  • the feed roll that receives the sanitary goods by adsorption rotates while keeping external contact with the cutter roll. Therefore, the structure of the prior art is not suitable for high-speed operation. Moreover, since the cutter roll performs only sucking, suction holes thereof are easily clogged. This reduces the serviceability ratio of the apparatus.
  • an object of the present invention is to provide a cut and removal apparatus and a cut and removal method capable of attaining a high serviceability ratio and high-speed operation.
  • the cut and removal apparatus includes an anvil roll, a cutter roll, and a suction part.
  • the cutter roll is placed in an almost-contact position with respect to the anvil roll.
  • the cutter roll has at least one blade in a loop shape for die-cutting off a predetermined portion from a sheet-like member.
  • the cutter roll has an air vent for supplying and discharging air in an inner-loop region surrounded by the blade, and holds a die-cut portion obtained by the die-cutting with the blade.
  • the suction part is placed at a position apart from the outer circumference of the cutter roll for sucking the held die-cut portion.
  • the "almost-contact position” refers to the position in which the anvil roll and the cutter roll are in parallel with each other and are close to or in contact with each other to such a degree that the blade of the cutter roll can die-cut the sheet-like member in cooperation with the anvil roll.
  • the cut and removal method uses the cut and removal apparatus described above.
  • the cutter roll rotates while the sheet-like member is being fed between the two rolls.
  • the method includes steps of decompression, die-cutting, transportation, pressurization, and charging performed during one rotation of the cutter roll.
  • a plurality of air vents in the inner-loop region communicate with a negative pressure chamber to reduce the atmospheric pressure near the surface of the inner-loop region.
  • the blade is in contact with the surface of the anvil roll so that the die-cut portion is die-cut off from the sheet-like member with the blade.
  • the transportation step the die-cut portion is transported along the circumference of the cutter roll while being kept adsorbed to the surface of the inner-loop region.
  • the plurality of air vents in the inner-loop region communicate with a positive pressure chamber to raise the atmospheric pressure near the surface of the inner-loop region.
  • the charging step the die-cut portion in the inner-loop region is sucked into the suction part and discharged.
  • air is supplied to the air vents to which the die-cut portion is adsorbed. This prevents the air vents from clogging, and therefore improves the serviceability ratio of the apparatus.
  • the die-cut portion held on the cutter roll is sucked into and transported through the suction part located apart from the surface of the cutter roll. This enables high-speed operation of the apparatus.
  • the die-cut portion sucked into the suction part may be collected and discarded, or may be recycled.
  • the shape of the through holes formed by die-cutting the sheet-like member may be circular, oval, or polygonal, or may be any combination of straight lines and/or curved lines.
  • the blade of the cutter roll is looped, which generally exhibits higher strength than a non-looped blade.
  • the thickness of the blade of the cutter roll is preferably determined so that the area of the portion of the blade coming into contact with the anvil roll is substantially constant at any time. This makes it possible to keep constant the pressure exerted when the blade of the cutter roll is brought into contact with the anvil roll.
  • the cutter roll and the anvil roll may be made of a material such as tool steel, high-speed tool steel, powder high-speed tool steel by HIP and sintering, and cemented carbide.
  • the hardness may be different between the cutter roll and the anvil roll. For a longer life of the blade, the hardness of the cutter roll is preferably greater than the hardness of the anvil roll.
  • the blade may be coated with diamond-like carbon.
  • the blades may preferably be placed at an equiangular pitch for nicely balanced rotation of the cutter roll.
  • the suction part In the discharging step, as the distance between the suction inlet of the suction part and the blade is smaller, the suction part can suck the die-cut portion stably. However, if the distance is too small, the die-cut portion is easily caught on the blade or easily twisted about near the suction inlet, possibly damaging the suction part and the blade. Therefore, in general, the distance is preferably set at 5 mm to 45 mm.
  • One or more air vents are provided for one inner-loop region.
  • a plurality of, or a number of air vents having small open ends are preferably provided.
  • the cut and removal apparatus described above further includes a negative pressure chamber turned to a negative pressure and a positive pressure chamber turned to a positive pressure.
  • the plurality of air vents are placed to communicate with one of the negative pressure chamber and the positive pressure chamber alternately via at least one path depending on the phase of the inner-loop region.
  • the area of an open end of the path communicating with the negative pressure chamber or the positive pressure chamber is preferably equal to or greater than the sum of the cross-sectional areas of the plurality of air vents.
  • the negative pressure from the negative pressure chamber and the positive pressure from the positive pressure chamber act effectively near the surface of the inner-loop region.
  • phase refers to the angle measured from the reference point.
  • the size of the die-cut portion is not limited.
  • the area of the die-cut portion that is, the area of the inner-loop region is set in a range of about 10 cm 2 to about 70 cm 2 . If the area of the die-cut portion exceeds 70 cm 2 , the opening of the suction part must be made large. This increases suction loss.
  • the suction part has a roughly circular opening for sucking the die-cut portion, and the diameter of the opening is set at roughly one to five times as large as the length of the blade in the rotation direction of the cutter roll.
  • the suction part may fail to suck the die-cut portion, or suction loss increases.
  • the surface of the inner-loop region of the cutter roll protrudes outwards in the radial direction of the cutter roll from the surface of the portion of the cutter roll outside the blade.
  • air between the die-cut portion and the surface of the cutter roll is sucked. Therefore, with the above structure in this preferred example, it is possible to swiftly reduce the atmospheric pressure in the inner-loop region, and also possible to easily feed the sheet-like member between the cutter roll and the anvil roll.
  • the cut and removal apparatus includes an anvil roll, a cutter roll, a suction device, an air supply device, and a duct.
  • the cutter roll is placed in an almost-contact position with respect to the anvil roll.
  • the cutter roll has a blade in a loop shape for die-cutting off a predetermined portion.
  • the cutter roll has an air vent in an inner-loop region surrounded by the blade.
  • the suction device sucks air through the air vent while the inner-loop region rotates over a first range of predetermined phases to adsorb a die-cut portion obtained by the die-cutting with the blade to the surface of the inner-loop region.
  • the air supply device supplies air between the surface of the inner-loop region and the die-cut portion through the air vent during rotation of the inner-loop region over a second range of other predetermined phases.
  • the duct sucks the die-cut portion from outside the cutter roll to transport the die-cut portion together with air during rotation of the inner-loop region over the second range.
  • the suction device includes a first chamber communicating with the air vent during the rotation over the first phase range.
  • the air supply device includes a second chamber communicating with the air vent during the rotation over the second phase range.
  • the two chambers are formed in (defined by) a neighboring member located near the cutter roll, and separated from each other to prevent communication with each other.
  • the cut and removal method uses the cut and removal apparatus of the embodiment described above. This method includes steps of decompression, die-cutting, transportation, pressurization, and charging performed during one rotation of the cutter roll.
  • a plurality of air vents in the inner-loop region communicate with the first chamber to reduce the atmospheric pressure near the surface of the inner-loop region.
  • the blade is in contact with the surface of the anvil roll so that the die-cut portion is die-cut off from the sheet-like member with the blade.
  • the transportation step the die-cut portion is transported along the circumference of the cutter roll while being kept adsorbed to the surface of the inner-loop region.
  • the plurality of air vents in the inner-loop region communicate with the second chamber to raise the atmospheric pressure near the surface of the inner-loop region.
  • the charging step the die-cut portion in the inner-loop region is sucked into the duct together with air and discharged.
  • the "sheet-like member” refers to a cloth-like structure having a large area compared with its thickness, including fiber laminates and the like in addition to films and cloths. It may be continuous in the form of a roll such as a web, and as a concept, it includes semimanufactures of sanitary napkins and disposable diapers and pants.
  • FIG. 1 is an exploded perspective view showing an outline of a cut and removal apparatus of the first example of the present invention.
  • FIG. 2 is a side layout of the cut and removal apparatus.
  • FIG. 3 is a partially omitted vertical section of a cutter roll.
  • FIG. 4 is a layout of a cut and removal apparatus of the second example.
  • FIG. 5 is a plan view of an anvil roll.
  • FIGS. 1 to 3 illustrate the first example.
  • a continuous sheet-like member that is, a web 3 is fed between an anvil roll 1 and a cutter roll 2 .
  • predetermined portions (die-cut portions) 31 are die-cut off from the web 3 , forming through holes 30 in the web 3 at a predetermined pitch.
  • the cutter roll 2 is in an almost-contact position with respect to the anvil roll 1 .
  • the cutter roll 2 has a plurality of blades 20 , for example.
  • the blades 20 are used for die-cutting off the die-cut portions 31 .
  • increased-diameter flange portions 23 of the cutter roll 2 are in external contact with the anvil roll 1 .
  • the flange portions 23 serve to stabilize the rotation of the cutter roll 2 and protect the blades 20 .
  • First and second fixing members (neighboring members) 61 and 62 are provided on the two sides of the cuter roll 2 , and the fixing members 61 and 62 are secured to a frame not shown.
  • a number of air vents 22 are formed in an inner-loop region 21 of each blade 20 of the cutter roll 2 . As clearly shown in FIG. 3 , the air vents 22 extend in the radial direction of the cutter roll 2 and open externally at the inner-loop region 21 , so that the die-cut portion 31 is adsorbed to and held on the surface of the inner-loop region 21 , as will be described later.
  • the illustrated cut and removal apparatus includes a suction device 4 and an air supply device 5 .
  • a plurality of communicating paths 24 communicating with the air vents 22 extend in parallel with each other in the axial direction. As shown in FIG. 3 , one end of each of the communicating paths 24 is closed by the first fixing plate 61 , while the other end thereof communicates with a negative pressure chamber (first chamber) 41 or a positive pressure chamber (second chamber) 51 formed inside the second fixing plate 62 .
  • the negative pressure chamber 41 and the positive pressure chamber 51 are separated from each other to prevent communication with each other, while they communicate with a pneumatic source 7 via piping members 42 and 52 , and the like.
  • the pneumatic source 7 which includes a pump, a tank, an ejector, and the like although they are not shown, sucks air inside the negative pressure chamber 41 via the piping member 42 and supplies pressure air into the positive pressure chamber 51 via the piping member 52 .
  • the air vents 22 in this inner-loop region communicate with the negative pressure chamber 41 via the communication path 24 .
  • the suction device 4 shown in FIG. 1 sucks air through the air vents 22 to allow the die-cut portion 31 cut off with the blade 20 to be adsorbed to the surface of the inner-loop region 21 .
  • the air vents 22 communicate with the positive pressure chamber 51 via the communicating path 24 .
  • the air supply device 5 supplies air under pressure out to a space between the surface of the inner-loop region 21 and the die-cut portion 31 through the air vents 22 .
  • a tapered hood 81 coupled to a duct 80 is placed in the vicinity of the cutter roll 2 .
  • the duct 80 communicates with a pneumatic source 82 for sucking air inside the duct 80 .
  • the pneumatic source 7 may also serve as the pneumatic source 82 .
  • the duct 80 and the hood 81 constitute a suction part 8 .
  • the suction part 8 sucks the die-cut portion 31 from outside the cutter roll 2 into the duct 80 and transports it together with air.
  • the cutter roll 2 rotates while the sheet-like member 3 is being fed between the two rolls 1 and 2 . During one rotation of the cutter roll 2 , process steps of decompression, die-cutting, transportation, pressurization, and discharging are performed.
  • the decompression step starts, in which the plurality of air vents 22 in the inner-loop region 21 come to communicate with the negative pressure chamber 41 via the communicating path 24 , to allow the pneumatic source 7 to suck air through the air vents 22 .
  • the atmospheric pressure near the surface of the inner-loop region 21 gradually decreases.
  • the die-cutting step starts, in which the blade 20 comes into contact with the surface of the anvil roll 1 , to allow the die-cut portion 31 (FIG. 1 ) to be die-cut off from the sheet-like member 3 in cooperation between the blade 20 and the anvil roll 1 .
  • the die-cut portion 31 is then adsorbed to the surface of the inner-loop region 21 .
  • the die-cut portion 31 that is kept adsorbed to the surface of the inner-loop region 21 , is transported along the circumference of the cutter roll 2 with the rotation of the anvil roll 1 .
  • the pressurizing step starts, in which the plurality of air vents 22 in the inner-loop region 21 communicate with the positive pressure chamber 51 via the communicating path 24 , to allow the pneumatic source 7 to supply compressed air to the air vents 22 under pressure.
  • the atmospheric pressure near the surface of the inner-loop region 21 increases.
  • the die-cut portion 31 adsorbed to the surface of the inner-loop region 21 becomes easily detached from the surface of the cutter roll 2 .
  • the die-cut portion 31 is therefore sucked at a suction inlet 83 of the hood 81 into the duct 80 together with air and discharged.
  • the above process steps are performed in sequence for the respective inner-loop regions 21 , forming the through holes 30 in the web 3 at a predetermined pitch by die-cutting.
  • the anvil roll 1 is rotatable.
  • each of the communicating paths 24 communicating with the negative pressure chamber 41 or the positive pressure chamber 51 and the cross-sectional area of the communicating path 24 it is preferable to set the area of the open end 25 of each of the communicating paths 24 communicating with the negative pressure chamber 41 or the positive pressure chamber 51 and the cross-sectional area of the communicating path 24 to be equal to or more than the sum of the cross-sectional areas of the plurality of air vents 22 communicating with the communicating path 24 .
  • Only one communicating path 24 , or a plurality of communicatinq paths 24 may communicate with one inner-loop region 21 .
  • the first and second ranges ⁇ 1 and ⁇ 2 shown in FIG. 2 should be set so that one inner-loop region 21 is prevented from communicating both the negative pressure chamber 41 and the positive pressure chamber 51 simultaneously.
  • the area of the die-cut portion 31 that is, the area of the inner-loop region 21 is preferably set at 10 cm 2 to 70 cm 2 .
  • the surface of the inner-loop region 21 preferably protrudes outwards in the radial direction of the cutter roll 2 by a slight amount ⁇ H from the surface of the portion of the cutter roll 2 outside the blade 20 . This can reduce the capacity of air existing between the die-cut portion 31 and the surface of the cutter roll 2 in the inner-loop region 21 , and thus shorten the time required for decompression.
  • the diameter D of the suction inlet 83 of the hood 81 is preferably equal to or larger than the length of the blade 20 in the rotation direction of the cutter roll 2 and equal to or smaller than five times as large as the length of the blade 20 .
  • a cover and door 100 covering the cutter roll 2 and the like may be provided for prevention of entering of dirt and dust.
  • FIGS. 4 and 5 illustrate the second example.
  • the anvil roll 1 includes a holding section 10 for holding the sheet-like member 3 .
  • the holding section 10 may be constructed of an arm or the like for pressing the sheet-like member 3 against the surface of the anvil roll 1 .
  • the holding section 10 is preferably composed of a plurality of air vents 12 to provide adsorption function with air as in the cutter roll 2 described above.
  • transfer drums 13 and 14 may be used as the means for feeding and transporting the web 3 .
  • the plurality of blades are not necessarily placed at an equiangular pitch. Only one blade 20 may be provided on the cutter roll 2 .
  • the flange portions 23 may not be provided.
  • the pneumatic sources 7 and 82 may be united.
  • the present invention is applicable to high-speed machine for continuously forming through holes in a sheet-like member.
EP01908277A 2001-03-02 2001-03-02 Vorrichtung sowie verfahren zum schneiden und zur entfernung von bahnen Withdrawn EP1364757A4 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/001652 WO2002070213A1 (fr) 2001-03-02 2001-03-02 Dispositif et procede servant a couper et a evacuer une bande

Publications (2)

Publication Number Publication Date
EP1364757A1 true EP1364757A1 (de) 2003-11-26
EP1364757A4 EP1364757A4 (de) 2004-05-12

Family

ID=11737090

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01908277A Withdrawn EP1364757A4 (de) 2001-03-02 2001-03-02 Vorrichtung sowie verfahren zum schneiden und zur entfernung von bahnen

Country Status (4)

Country Link
EP (1) EP1364757A4 (de)
JP (1) JPWO2002070213A1 (de)
CN (1) CN1128700C (de)
WO (1) WO2002070213A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612014A1 (de) * 2004-07-02 2006-01-04 Sandvik Intellectual Property AB Rotationsstanze sowie Schneidevorrichtung mit einer solchen Rotationsstanze
EP2457704A1 (de) * 2009-07-21 2012-05-30 Unicharm Corporation Schneidevorrichtung für das bandelement eines saugfähigen artikels

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DE10321778B4 (de) * 2003-05-14 2006-03-30 Windmöller & Hölscher Kg Schneid- und Transportwalze in einer Wickelvorrichtung zum Aufwickeln von Materialbahnen
JP4557860B2 (ja) * 2005-10-11 2010-10-06 トキワ工業株式会社 ピロー包装装置及びシュリンク包装体
JP5001697B2 (ja) * 2007-03-29 2012-08-15 大王製紙株式会社 吸収性物品の製品カッター装置
JP5504433B2 (ja) 2009-02-03 2014-05-28 株式会社瑞光 使い捨て着用物品の製造方法およびその製造装置
JP5249845B2 (ja) * 2009-04-24 2013-07-31 救急薬品工業株式会社 口腔内投与剤層の形成方法
IT1401265B1 (it) * 2010-08-06 2013-07-18 Gallucci Dispositivo per lo scarico, da un piano di lavoro, di articoli piani nei quali sono ricavate, mediante taglio e/o incisione, porzioni su cui sono riprodotti disegni e/o scritte
CN102407536A (zh) * 2011-09-30 2012-04-11 曾洲 一种导光板加工装置
CN103128788A (zh) * 2011-12-05 2013-06-05 苏州源德福科技有限公司 废料提取装置
CN103128795A (zh) * 2011-12-05 2013-06-05 苏州源德福科技有限公司 一种模切装置
CN103128790A (zh) * 2011-12-05 2013-06-05 苏州源德福科技有限公司 提取刀
CN103128786A (zh) * 2011-12-05 2013-06-05 苏州源德福科技有限公司 一种吹气圆辊提取刀
JP5913951B2 (ja) * 2011-12-14 2016-05-11 花王株式会社 裁断装置
JP5995533B2 (ja) * 2012-06-01 2016-09-21 株式会社瑞光 使い捨て着用物品となる材料から一部を次々に切り抜いて除去するシステムおよび該システムの復旧方法
CN102862185B (zh) * 2012-09-19 2015-09-16 缪国兴 一种卫生用品打孔设备及应用该设备的卫生用品生产工艺
CN103042574A (zh) * 2013-01-18 2013-04-17 坂崎雕刻模具（昆山）有限公司 圆压圆模切机吸气刀辊
CN103406942A (zh) * 2013-08-23 2013-11-27 无锡商业职业技术学院 一种辊压模具
JP5786056B1 (ja) * 2014-03-27 2015-09-30 ユニ・チャーム株式会社 吸収性物品の製造装置、及び吸収性物品の製造方法
CN104552427A (zh) * 2015-01-29 2015-04-29 苏州安洁科技股份有限公司 一种刀腔排废辊刀
CN105751299B (zh) * 2016-04-25 2017-08-25 三明市普诺维机械有限公司 一种辊压冲孔装置
CN106182130B (zh) * 2016-08-31 2018-06-01 江苏金卫机械设备有限公司 一种旋切装置
DE102017213389B4 (de) * 2017-08-02 2022-07-28 Heidelberger Druckmaschinen Ag Rotationsstanze zum Ausstanzen eines Materialstücks aus einem Bedruckstoff
KR102008871B1 (ko) * 2018-12-06 2019-10-21 (주)하나기술 진공롤링부를 구비하는 이차전지 전극 노칭시스템
CN110421638B (zh) * 2019-09-06 2020-05-12 阳西县金宇星防护用品制造有限公司 一种高效的吸附棉模切设备

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US5570620A (en) * 1993-12-22 1996-11-05 Best Cutting Die Company Panel cutting apparatus
EP0933174A1 (de) * 1998-01-28 1999-08-04 Offset Feuilles Nord Verfahren sowie Vorrichtung zum Entfernen von Abfallteilen

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US3257885A (en) * 1964-06-19 1966-06-28 Smithe Machine Co Inc F L Rotary panel cutter
US5570620A (en) * 1993-12-22 1996-11-05 Best Cutting Die Company Panel cutting apparatus
EP0933174A1 (de) * 1998-01-28 1999-08-04 Offset Feuilles Nord Verfahren sowie Vorrichtung zum Entfernen von Abfallteilen

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See also references of WO02070213A1 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612014A1 (de) * 2004-07-02 2006-01-04 Sandvik Intellectual Property AB Rotationsstanze sowie Schneidevorrichtung mit einer solchen Rotationsstanze
EP2457704A1 (de) * 2009-07-21 2012-05-30 Unicharm Corporation Schneidevorrichtung für das bandelement eines saugfähigen artikels
EP2457704A4 (de) * 2009-07-21 2013-05-29 Unicharm Corp Schneidevorrichtung für das bandelement eines saugfähigen artikels

Also Published As

Publication number Publication date
EP1364757A4 (de) 2004-05-12
CN1128700C (zh) 2003-11-26
CN1400933A (zh) 2003-03-05
JPWO2002070213A1 (ja) 2004-07-02
WO2002070213A1 (fr) 2002-09-12

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