US3552251A - Rotary slit cutter - Google Patents

Rotary slit cutter Download PDF

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Publication number
US3552251A
US3552251A US3552251DA US3552251A US 3552251 A US3552251 A US 3552251A US 3552251D A US3552251D A US 3552251DA US 3552251 A US3552251 A US 3552251A
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US
United States
Prior art keywords
web
rotary
knife
knives
cylinder
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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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English (en)
Inventor
Herbert E Neff
William R Chestnut
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Bobst Champlain Inc
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Bobst Champlain Inc
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/18Perforating by slitting, i.e. forming cuts closed at their ends without removal of material
    • B26F1/20Perforating by slitting, i.e. forming cuts closed at their ends without removal of material with tools carried by a rotating drum or similar support
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • B26D5/30Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier
    • B26D5/32Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed having the cutting member controlled by scanning a record carrier with the record carrier formed by the work itself
    • 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
    • B26D7/26Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2692Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member the rollers or cylinders being mounted skewed
    • 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
    • Y10T83/465Cutting motion of tool has component in direction of moving work
    • Y10T83/4693With means to concurrently adjust flying frequency and retain flying speed of tool
    • 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
    • Y10T83/465Cutting motion of tool has component in direction of moving work
    • Y10T83/4766Orbital motion of cutting blade
    • Y10T83/4795Rotary tool
    • Y10T83/4809With loop former preceding tool
    • 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
    • Y10T83/465Cutting motion of tool has component in direction of moving work
    • Y10T83/4766Orbital motion of cutting blade
    • Y10T83/4795Rotary tool
    • Y10T83/4818Interconnected work feeder and tool driver
    • 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
    • Y10T83/465Cutting motion of tool has component in direction of moving work
    • Y10T83/4766Orbital motion of cutting blade
    • Y10T83/4795Rotary tool
    • Y10T83/4824With means to cause progressive transverse cutting
    • Y10T83/4827With helical cutter blade
    • 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
    • Y10T83/465Cutting motion of tool has component in direction of moving work
    • Y10T83/4766Orbital motion of cutting blade
    • Y10T83/4795Rotary tool
    • Y10T83/4847With cooperating stationary tool

Definitions

  • the slit cutter comprises a rotary cylinder carrying knives, and a stationary fixed knife the cutting edge of which is ground away or relieved except at those parts along its length where the web is to be slit. All of the rotary knives cooperate with the resulting intermittent edge of the single fixed knife.
  • the knives are preferably helically mounted on the cylinder, and the cylinder and fixed knife are skewed at an angle such that the resulting slits are perpendicular to the long axis of the web. There is a metering roll ahead of the knives, and a pull roll following the knives, both driven accurately at web speed, and serving to maintain control of the web inde-.
  • Cigarette manufacturers employ cigarette pack filling machines with a continuous printed web feed into the machine for the wrappers or so-called "labels for a soft pack".
  • the web has been notched to facilitate feeding and handling in the pack filling machine, the notches being cut in proper register with the printing on the web.
  • the triangular notches have been made with a reciprocating punch utilizing male and female type dies, requiring dwell of the web, or on a swinging type punch which moves with the web during the punch cycle.
  • Each of the approaches have definite speed limitations.
  • a rotary type cutter will .work at higher speeds, and has been used for cutting a sheet all the way across.
  • Such a cutter may be a double rotary cutter using two knife cylinders with overlapping blades.
  • a rotary cutter also has been used cooperating with asingle stationary blade, the blades passing one another so closely as to cut a web across its width even when the rotary knife matches web speed.
  • the rotary blades are made helical, and the rotary'and fixed blades then are disposed at an angle that is skewed in proper relation to the web travel to obtain a cut which is square across the web.
  • Double rotary cutters provide high operating speed, but have not been thought feasible for short slits. In a practical case there may be say nine knives around a knife cylinder, and perfect meshing of the knifes is needed for all nine blades. This is very difficult even with continuous blades, and multiple short blades easily get out of mesh thereby impairing their life.
  • a rotary slit cutter comprising a rotary cylinder carrying a knife, and a fixed knife with its edge disposed at the line of coincidence of the paths of the rotary cutting edge and the web.
  • the cutting edge of one of the knives is cut away or relieved except at those parts along its length where the web is to be slit.
  • the rotary cylinder has a plurality of like knives. spaced around the cylinder, and these knives all have continuous cutting edges.
  • the rotary knives are, preferably slightly helically mounted on the cylinder, and the fixed knife and the cylinder are skewed at an angle such that the resulting slits are perpendicular to the long axis of the web.
  • the knife cylinder and the fixed knife have a skew angle which is adjustable, and means are provided for effectuating a gradual controlled adjustment which. is equal for both the cylinder and the fixed knife.
  • the skew angle is adjusted whenever the length of the cut sheet is changed.
  • the rotary knife cylinder is driven through appropriate gear means, and there is a swivel joint between the shaft and the gearing in order to accommodate the desired adjustment of the skew angle.
  • a running register or a compensator roll may be used, in conjunction with electric eye scanning means to maintain the desired register. If the web has been preprinted and is being fed from a roll, a so-called feathering drive preferably is employed.
  • FIG. 1 shows a piece of printed web provided with lines of short slits
  • FIG. 2 is a simplified plan view of a rotary slit cutter embodying features of our invention
  • FIG. 3 is a simplified elevational view of the rotary slit cutter
  • FIG. 4 is a fragmentary section showing the rotary and fixed knives
  • FIG. 5 shows how the cutting edge of the fixed knife is relieved or cut away to make short slits
  • FIG. 6 is a schematic diagram showing the application of electric eye scanning means for register control.
  • FIG. 7 is a schematic view showing the use of a compensator roll instead of a running register.
  • sheet 12 is assumed to have been printed to act as the wrapper or so-called label of soft cigarette packs.
  • each wrapper is 7 inches wide, and sheet or web 12 has a width of 44 inches, making up six wrappers across, with a one-inch margin at each edge for scrap.
  • Each line of slits has seven slits as shown, across the web.
  • the repeat length" for the printing is here shown to be 36 inches, corresponding to nine wrappers each 4 inches'along the web, and the lines of slits are therefore spaced four inches apart. This dimension will vary with the cigarette length.
  • the invention of course,'is applicable to a slit web used for any other purpose.
  • the rotary slit cutter comprises a rotary knife cylinder 14 carrying a plurality of rotary knives 16, and there is a single fixed or stationary knife 18 disposed beneath the web, the latter being shown in FIG. 3 by the broken line 20.
  • the cylinder 14 (FIG. 2) and fixed knife 18 are longer than the width of the web, indicat'ed in FIG. 2 by broken lines 20.
  • Both the rotary and fixed knives are located at the web line, and are brought so close together as to contact and thereby have a cutting action on the web even though the rotary knives are turned at web speed.
  • the cylinder 14 has nine knives 16, equally spaced about the cylinder, the angular separation being 40, and the linear separation at the web being four inches.
  • the edges of the knives are disposed on a circle having a circumference of 36 inches, or a diameter of 36 hr inches. If the printing web is coming directly from a print line, such as a multicolor gravure press line, the gravure cylinders would conveniently have the same diameter, so that the parts may be turned in one to one ratio by a common line shaft or main drive shaft 24 (FIGS. 2 and 6) running lengthwise of the press line.
  • the knives 16 are preferably disposed at an angle or helically on the knife cylinder 14.
  • the angle is small, say one degree, and is exaggerated in the drawing.
  • the cylinder is disposed with its shaft at an angle or skewed, as will be seen from inspection of the shaft 22.
  • the fixed knife 18 is skewed at the same angle, say one degree, as the cylinder axis.
  • the angle is opposite the helix angle. They seem alike in FIG. 2 because in FIG. 2 the rotary knife is shown a at the top rather than at the bottom of the cylinder where it cuts. With the web moving in the direction of the arrow, the resulting cut may be made perpendicular to the long axis of the web.
  • the rotary knife cylinder is driven by main drive shaft 24 through gearing located at 26.
  • This is preferably connected to shaft 22 through a swivel joint or.coupling 28.
  • This may be a universal joint, in which case two such joints may be used in series, so as to maintain a uniform velocity.
  • other connections are preferably used such as the Sier-Bath flexible gear couplings made by Sier-Bath Gear Company, Inc. of North Bergen, New Jersey, USA.
  • the skew angle is conveniently adjusted by appropriate means.
  • the bearing block 30 for cylinder 14 also carries the fixed knife 18.
  • the adjustment may be controlled and made gradually by means of a threaded link 32 connected to bearing block 30 at an ear 34.
  • the link may be moved and subsequently locked by nuts 36 and 38 on each side of an ear 40 fixed on the frame a bolt received in a bolt hole.
  • each rotary knife 16 is secured to a holder 50 by screws 52.
  • Holder 50 in turn is secured to cylinder 14 by means of appropriate screws 54.
  • the screws 54 .inpractice include screws which force the blade outward, as
  • FIG. 5 shows how the cutting edge of the fixed knife 18 is relieved or cut away as shown at 62, for most of its length, leaving only the seven short cutting edges 64. In the present case these are Vzinch long, corresponding to the desired slit length of /zinch.
  • the machine preferably includes a metering roll 70 (FIG. 3) with a cooperating nip roll 72 ahead of the knives, and a pull roll 74 with a cooperating nip roll 76 following the knives.
  • These rolls 70 and 74 both are driven at the desired web speed, and they are geared to and driven by the main drive shaft 24, as shown in FIG. 2 by the gear boxes 78 and 80.
  • the nip rolls have been omitted to better show the me tering roll 70 and pull roll 74.
  • the slits must be located in proper registration with the printing on the web, and for this purpose the gearing in box 26 (FIG. 2) differs from the gearing at 78 and 80 in including running register means symbolized at 27.
  • This may be of the worm and gear type with the worm slidable axially for a change of say 45 at shaft 22, or it may be of the planetary or differential gear 360 type. In either case a rotative correction may be fed to the knife shaft 22.
  • line shaft 24 drives metering roll 70 through gearing at 78, and drives pull roll 74 through gearing at 80.
  • the rotary knife cylinder 14 is driven through gearing at 26 which includes a running register symbolized at 27.
  • Some corrective motion may be fed into shaft 22 by means of a correction motor M.
  • This may be controlled by conventional means, including an electric eye scanner 82 which scans the web 20 at a point near the knife cylinder 14.
  • a pulse signal from scanner 82 is compared with a pulse signal from a socalled phase micrometer 84 which is secured to and turns with the shaft 22 of knife cylinder 14.
  • the signals are compared in suitable circuitry often referred to as a computer shown at 86, and a correction signal is sent on cable 88 to the correction motor M.
  • Thescanner, phase micrometer and circuitry in the computer may be of the type sold by the Registron Division of Bobst-Champlain, Inc. located at Roseland, New Jersey, as
  • FIG. 7 is generally the same as FIG. 3 except that the web 12 is fed downward and then upward around a'compensator roll 90.
  • This may be moved up or down by means of vertically slidable bearings 92 at both ends operated by vertical screws 94 at both ends turns turned through gearing at 96 by a correction motor M.
  • the control circuitry may be exactly like that shown in FIG. 6, except that the running register 27 in FIG. 6 is eliminated, and the correction motor M is then used to raise or lower the compensator roll 90 as shown in FIG. 7, in which the motor M corresponds to the motor M in FIG. 6.
  • the skewing angle is dependent upon the feed up and When the webis accurately controlled by metering and pull rolls on each side of the rotary knife as here shownfthere is some leeway in the knife travel relative to the web travel. With a 36" repeat length as here shown, the effectiveknife cylinder circumference should be 36" but maybe somewhat more-or somewhat less without spoiling the operation. This is so because the rotary knife can slide on the web somewhat without cutting the web except at th'e instant when the knife and web are at the fixed knife. This possibility is a convenience in that some change in repeat l'en gth'may be accommodated without necessarily requiring an'ew knife cylinder.
  • the printed web is assumed to be coming from a printer, such as a multicolor gravure printing line.
  • the web may be preprinted and rolled, the roll subsequently being fed directly to the present slit cutter.
  • the rate of feed of the metering and pull rolls should preferably be variable to accommodate a change in repeat length of the preprinted web. This change inay be slight but it is cumulative.
  • a so called feathering drive may be used for the metering rolls, such as 1 the drive disclosed in US. Pat. to I-laskin et al. 2,812,938 issued No v. 12, 1957 and entitled Registering Drive for a Web".
  • This adjustment employs an electric eye scanner and 7 phase micrometer, all as is fully described in the patent, and the frequency and direction of the adjustment of the rotary knife cylinder is monitered and used to adjust the speed of the metering roll.
  • the same electpic eye scanner and phase micrometer that are used to obtain proper slit to print registration also serve to activate the circuitry of the I-Iaskin feathering drive.
  • a llegistron type C370 would be used.
  • the slitter may be used following a last gravure color print station, and if located very close to that station the metering roll 70 may be eliminated.
  • the device may be run at high speed and is. substantially as simple as made at each of the rotary blades.
  • the apparatus will work at high speed, say 800 ft. per minute.
  • a rotary slit cutter for operating on a continuously moving web to produce a line of short slits extending transversely of the web, said cutter comprising a rotary knife cylinder having a plurality of knives substantially helically mounted thereon, each of said knives having a continuous cutting edge, a stationary or fixed knife having an intermittent cutting edge disposed in the path of the cutting edges of said rotary knives, said cylinder and fixed knife being mounted relative to the transverse axis of said web at an angle skewed an amount such that the resulting slits are perpendicular to the long axis of the web.
  • a rotary slit cutter for operating on a continuously moving, previously printed web to produce a line of short slits extending transversely of the web, said cutter comprising a rotary knife cylinder carrying a rotary knife having a cutting edge, a stationary or fixed knife having its edge disposed at the path of the said rotary cutting edge, the edge of one of said knives being cut away or relieved except at those parts along its length where the web is to be slit, means for sensing said print on said web and means operatively connected to said sensing means for momentarily varying the speed of said web relative to said rotary knife edges so as to afford registration of said slits with the printing on said web.
  • a rotary slit cutter as defined in claim 2, wherein the means for momentarily varying the speed of said web relative to said rotary knife edges comprises running register means operatively connected to said drive means for momentarily varying the rotational speed of said rotary knife cylinder.
  • a rotary slit cutter as defined in claim I in which the skew angle of the knife cylinder and fixed knife'is adjustable, and in which there are means for effectuating a gradual controlled adjustment of the skew angle, and additional means for locking the said knife cylinder and fixed knife against movement from the desired angular position.
  • a rotary slit cutter as defined in claim 7 for operating on a previously printed web, in which a running register means is provided in the drive means of the rotary knife cylinder in order to afford registration of the slits with the printing on the web.
  • a rotary slit cutter as defined in claim 7 for operating on a previously printed web, in which there is a compensator roll ahead of the knives to provide registration adjustment for correction of the registration of the slits with the printing on the web.
  • a rotary slit cutter as defined in claim 1 in which the rotary knife is approximately helically mounted on the knife cylinder to produce a shear cut, and in which the cylinder and fixed knife are mounted at an angle skewed an amount such that the resulting slits are perpendicular to the long axis of the web.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Making Paper Articles (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Nonmetal Cutting Devices (AREA)
US3552251D 1968-12-03 1968-12-03 Rotary slit cutter Expired - Lifetime US3552251A (en)

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US78086268A 1968-12-03 1968-12-03

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US (1) US3552251A (xx)
JP (1) JPS4926550B1 (xx)
BE (1) BE741917A (xx)
CH (1) CH513701A (xx)
DE (1) DE1957212A1 (xx)
ES (1) ES373673A1 (xx)
FR (1) FR2025071A1 (xx)
GB (1) GB1228099A (xx)
SE (1) SE352283B (xx)

Cited By (27)

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US3750510A (en) * 1971-05-04 1973-08-07 Frastan Hollinwood Ltd Cutting apparatus for paper and like webs
US3859879A (en) * 1972-03-08 1975-01-14 Stanztechnik Gmbh Roeder & Spe Cutting apparatus
US3869950A (en) * 1972-03-07 1975-03-11 Herve Fils Papet Sentier Apparatus for transverse cutting or perforating a continuously advancing web
US3888147A (en) * 1971-05-11 1975-06-10 Olivetti & Co Spa Cutting device for cutting sheets from a roll in a copy machine
US4044641A (en) * 1975-02-03 1977-08-30 International Paper Company Machine for handling sheet material
US4914997A (en) * 1987-07-22 1990-04-10 G.D. Societa Per Azioni Transverse cutting device for cutting into lengths a strip traveling continuously along a predetermined path
US5000812A (en) * 1989-07-28 1991-03-19 Imtec, Inc. Printer cutter laminator
US5000069A (en) * 1989-10-06 1991-03-19 Ithaca Peripheral Inc. Rotary cutter
US5001952A (en) * 1988-11-30 1991-03-26 Kanzaki Paper Manufacturing Co., Ltd. Rotary cutter
US5090285A (en) * 1987-12-14 1992-02-25 Hitachi Metals, Ltd. Sheet cutter
US5117718A (en) * 1991-04-23 1992-06-02 Integrated Design Corporation Web perforating apparatus
US5240160A (en) * 1991-03-04 1993-08-31 Nippon Petrochemicals Company, Limited Rotary splitting tool to fabricate a fibrillated web
WO2000061325A1 (en) * 1999-04-09 2000-10-19 Advanced Technology & Machinery, Inc. Overspeed helical rotary knife
WO2002016244A2 (en) * 2000-08-23 2002-02-28 Moore North America, Inc. Rotary cutter with automatic knife offset
US6431491B1 (en) 1998-07-27 2002-08-13 Fabio Perini S.P.A. Perforator for weblike materials with means for modifying the interval between consecutive lines of perforations
US6565499B2 (en) * 2000-01-24 2003-05-20 Rinaldo Benzoni Automatic machine for slitting and creasing paperboard sheets and the like
US6652434B2 (en) * 2001-04-03 2003-11-25 Rinaldo Benzoni Device for forming box joining flaps in a box splitting machine
US20050034582A1 (en) * 2003-06-04 2005-02-17 Tecnau S.R.L. Punching and/or perforating equipment for continuous forms
US7191690B2 (en) * 2001-01-10 2007-03-20 Heidelberger Druckmaschinen Ag Helical mechanism cutting unit and method for operating for the same
US20070272262A1 (en) * 2003-11-19 2007-11-29 Fiorenzo Draghetti Cutting Unit for Cutting Continuous Cigarette Rods
CN101537645B (zh) * 2009-04-24 2010-12-29 李秉江 双回转刀切纸机横切装置及调整切纸长度和方正度方法
CN102699415A (zh) * 2012-05-04 2012-10-03 中冶南方工程技术有限公司 曲柄连杆式飞剪调节丝杆的长度设计方法
US20140090533A1 (en) * 2012-09-08 2014-04-03 Mark Andy, Inc. Die cutting system
CN104139416A (zh) * 2014-07-01 2014-11-12 李秉江 单回转刀横切装置
WO2015150851A1 (en) * 2014-04-03 2015-10-08 Sandvik Intellectual Property Ab High performance rotary cutting apparatus for profiles with straight edges
US20190016004A1 (en) * 2017-07-17 2019-01-17 Elsner Engineering Works, Inc. Thermal compensating mount for a knife roll in a web processing machine
US10913631B2 (en) * 2017-11-30 2021-02-09 Müller Martini Holding AG Apparatus and method for cutting or perforating a paper web

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IT1190473B (it) * 1986-02-03 1988-02-16 Mauro Lenzi Dispositivo di perfezionamento per l'esecuzione di perforazioni trasversali su di un nastro di carta
DK155240C (da) * 1986-05-02 1989-07-17 Eskofot As Filmskaereindretning
US4805501A (en) * 1986-10-15 1989-02-21 Fobelmac Consulting Ag System for processing a web
DE4202186A1 (de) * 1992-01-28 1993-07-29 Will E C H Gmbh & Co Schneidapparat
CN108818695B (zh) * 2018-06-08 2019-12-10 芜湖市亿仑电子有限公司 一种电容器金属化薄膜加工用分切机纠偏装置
JP6687686B2 (ja) * 2018-08-02 2020-04-28 ハイペリオン マテリアルズ アンド テクノロジーズ (スウェーデン) アクティエボラーグ 直線縁部を有する形状用の高性能回転切断装置

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US2020996A (en) * 1933-06-19 1935-11-12 Goss Printing Press Co Ltd Cutting mechanism
US2670796A (en) * 1951-01-10 1954-03-02 United States Steel Corp Apparatus for cutting strip
US2850092A (en) * 1956-03-01 1958-09-02 United States Steel Corp Flying shear
US3056323A (en) * 1958-04-14 1962-10-02 Paper Converting Machine Co Progressive transverse web cutting apparatus
US3083602A (en) * 1961-01-13 1963-04-02 West Virginia Pulp & Paper Co Precise web metering device
US3190163A (en) * 1961-01-06 1965-06-22 John J Bradley Cutting device

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US2020996A (en) * 1933-06-19 1935-11-12 Goss Printing Press Co Ltd Cutting mechanism
US2007544A (en) * 1934-05-04 1935-07-09 Meisel Press Mfg Company Production of perforated webs
US2670796A (en) * 1951-01-10 1954-03-02 United States Steel Corp Apparatus for cutting strip
US2850092A (en) * 1956-03-01 1958-09-02 United States Steel Corp Flying shear
US3056323A (en) * 1958-04-14 1962-10-02 Paper Converting Machine Co Progressive transverse web cutting apparatus
US3190163A (en) * 1961-01-06 1965-06-22 John J Bradley Cutting device
US3083602A (en) * 1961-01-13 1963-04-02 West Virginia Pulp & Paper Co Precise web metering device

Cited By (35)

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Also Published As

Publication number Publication date
SE352283B (xx) 1972-12-27
FR2025071A1 (xx) 1970-09-04
JPS4926550B1 (xx) 1974-07-10
DE1957212A1 (de) 1970-06-25
ES373673A1 (es) 1972-02-01
CH513701A (fr) 1971-10-15
GB1228099A (xx) 1971-04-15
BE741917A (xx) 1970-05-04

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