US3628410A - Cutoff control for cutting long sheets - Google Patents

Cutoff control for cutting long sheets Download PDF

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Publication number
US3628410A
US3628410A US3628410DA US3628410A US 3628410 A US3628410 A US 3628410A US 3628410D A US3628410D A US 3628410DA US 3628410 A US3628410 A US 3628410A
Authority
US
United States
Prior art keywords
web
knife
brake
knife means
cycle
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
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English (en)
Inventor
Albert F Shields
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.)
S&S Corrugated Paper Machinery Co Inc
Original Assignee
S&S Corrugated Paper Machinery Co Inc
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 S&S Corrugated Paper Machinery Co Inc filed Critical S&S Corrugated Paper Machinery Co Inc
Application granted granted Critical
Publication of US3628410A publication Critical patent/US3628410A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D36/00—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut
    • B23D36/0008—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices
    • B23D36/0033—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for obtaining pieces of a predetermined length
    • B23D36/0058—Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock which the latter is travelling otherwise than in the direction of the cut for machines with only one cutting, sawing, or shearing devices for obtaining pieces of a predetermined length the tool stopping for a considerable time after each cutting operation
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/38—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with means operable by the moving work to initiate the cutting action
    • B26D5/40—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with means operable by the moving work to initiate the cutting action including a metering device
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/364—By fluid blast and/or suction
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4653—With means to initiate intermittent tool action
    • Y10T83/4656—Tool moved in response to work-sensing means
    • Y10T83/4659—With means to vary "length" of product
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4653—With means to initiate intermittent tool action
    • Y10T83/4656—Tool moved in response to work-sensing means
    • Y10T83/4676—With work-responsive means to initiate flying movement of tool
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4653—With means to initiate intermittent tool action
    • Y10T83/4685—With means to vary frequency of initiation
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4693—With means to concurrently adjust flying frequency and retain flying speed of tool
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/4804—Single tool action drive
    • Y10T83/4807—With one-revolution drive

Definitions

  • IU'SCI 83/287 ABSTRACT Actuation of a brake means brings a cyclically ⁇ 299 83/335 variable drive transmission for cutoff knives to a stop at a [51] [m U B238 25/12 minimum speed point in each cycle and the transmission ';f-.. remains stopped until a predetermined lengljh fthe web is fed [50] Field] of Search 83/285 287 past the knife bars.
  • the speed of the knives be equal to or substantially equal to the linear speed of the moving web, in order to prevent either buckling of the web, which would occur if the knives moved too slowly, or ripping of the web which would occur if the knives moved too fast.
  • the instant invention cuts long sheet lengths by intermittently driving a cyclically variable transmission driven cutoff. That is, the cutoff is stopped for a period during which a predetermined length of the web is advanced at paper speed. At the end of this period, the cutoff is actuated automatically and by the time the knife drums engage the web the cyclically variable transmission is up to substantially maximum speed. After each cutting the transmission is again stopped for another period of time during which a predetermined length of the web is delivered, after which the transmission is actuated and the knives cut the sheet from the web. During acceleration and deceleration of the quadric chain transmission as well as when the transmission is stopped, the web is moving at uniform high speed.
  • sheet length is equal to a predetermined length of the web fed while the transmission is stopped plus a length of the web fed in the interval during which the knife bars make one revolution. It is also noted that the transmission is halted at a predetermined point in the cycle to a very high degree of accuracy, made possible to a great extent by the fact that the stopping point is located near the point of minimum velocity in the cycle during continuous transmission operation and'braking takes place at a very low speed.
  • a primary object of the instant invention is to provide a novel mechanism for cutting relatively long length sheets from a moving web.
  • Another object is to provide apparatus of this type, in which a quadric chain or other cyclically variable speed transmission driven cutoff is stopped during each complete cycle of the cutoff while the web continues to be fed at high speed.
  • Still another object is to provide apparatus of this type in which the knife bar transmission is braked to a stop at a point in the cycle where velocity is normally at a minimum.
  • FIG. I is a block diagram showing cutoff apparatus constructed in accordance with teachings of the instant invention.
  • FIG. 2 is a knife bar velocity diagram.
  • FIG. 3 is a fragmentary side elevation of board having multiple corrugated layers.
  • the apparatus of HG. ll receives web or ribbon 11, moving in the direction indicated by arrow A, and produces sheets 112 of predetermined length by cutting web 11 transverse to its direction of movement A. More particularly, feeder M continuously moves web l l from left to right with respect to FIG. l between knife bars or drums I5, 16 of adjustable cyclically variable transmission driven cutofi 20, of a type described in detail in my aforesaid US. Pat. No. 3,176,565. As will hereinafter be seen, the knives carried by bars 15, 16 periodically engage web llll to cut same transverse to the direction of movement A to produce sheets 112 that are removed by takeofi device 19. As seen in FIG. 3,
  • sheet Ill is constructed of seven layers of material, three of which are corrugated. This produces very stiff board which requires very high cutting forces.
  • Web feeder I4 is directly driven by input drive 22 which also drives variable speed unit 23.
  • Clutch brake unit 25 is interposed between variable speed unit 23 and adjustable cutoff 20.
  • Unit 25 consists of clutch section 26 and brake section 27.
  • Clutch 26 and brake 27 are coordinated in a manner well known to the art, so that when clutch in is operated into engagement, brake 27 is released essentially simultaneously. Conversely, when brake 27 is actuated, clutch 26 is released essentially simultaneously.
  • measuring means or settable counter 28 includes an input derived from signals produced by web feeder M and an output which is used to actuate clutch 26 and atthe same time release brake 27. As will also hereinafter be seen, actuation of brake 27 to stop cutoff 20 and the release of clutch 26 are controlled by signals derived from cutoff 20.
  • knife drums 115, lb rotate at a speed which varies within each cycle. If a quadric chain linkage is used to drive the cutoff, its velocity diagram will be as illustrated in FIG. 2. In particular, cutting takes place at or near maximum velocity B for knife bars 15, I6. Brake 2'7 is applied and actual stopping of cutoff 20 occurs at portion C of the cycle where velocity is minimum.
  • the length of sheet 12 is a function of the count made by settable counter 2% plus the time knife bars l5, l6 require to make one revolution.
  • F or best cutting advantage cutoff 20 is set for normal operation at a sheet length where a high cutting force is present.
  • Counter 2% is then set to control a major portion of the length of sheet 12 with final adjustments being made by slight adjustment made by varying the Reeves drive of cutoff 20. Sheet length accuracy is maintained by stopping cutoff 20 at a low point on the normal velocity diagram.
  • counter 28 after settable counter 2% uncounts and transmits a signal causing engagement of clutch 2b and release of brake 27, counter 28 automatically resets and then stands idle until receipt of a signal from cutoff 20. Such signal fed to counter 28 indicates that sheet 12 has been severed from web 11 and cutoff 20 is stopped.
  • quadric chain drive transmission While specific reference in the foregoing specification has been made to a quadric chain drive transmission, the latter may be replaced by a slotted crank or elliptical gear type transmission.
  • Apparatus for transforming a moving elongated web into sheets comprising feeding means for moving the web longitudinally at uniform speed, an adjustable knife means for cutting the moving web transverse to the axis thereof to produce sheets, input power means to drive said feeding means and said knife means, a brake actuable to stop said knife means following each cutting of the web by said knife means, a disengageable clutch interposed between said power means and said knife means, said feeding means moving said web when said clutch is both engaged and disengaged,
  • a settable measuring means which controls engagement of said clutch and release of said brake in response to signals derived from said feeding means whereby said knife means is actuated to cut said web into sheets each having a length determined by the setting of said measuring means plus the movement of said web in the interval required to operate said knife means through a cycle, afier each cut by said knife means said feeding means moving a preselected length of said web past said knife means while said clutch is disengaged and said brake is engaged, and said feeding means also moving an additional preselected length of said web past said knife means while the clutch is engaged and said knife means is operated through a cycle, whereby each of said sheets is of a length equal to said preselected length plus said additional preselected length.
  • said knife means is constructed with cutting elements that operate at a speed that varies within each cycle of uniform input speed supplied by said input power means to said knife means, said cutting elements engaging said web when said cutting elements are approximately at maximum speed within each cycle, said brake acting to stop said knife means during a portion of said cycle when said cutting elements are approximately at minimum speed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Control Of Cutting Processes (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Making Paper Articles (AREA)
US3628410D 1969-11-21 1969-11-21 Cutoff control for cutting long sheets Expired - Lifetime US3628410A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87867869A 1969-11-21 1969-11-21

Publications (1)

Publication Number Publication Date
US3628410A true US3628410A (en) 1971-12-21

Family

ID=25372565

Family Applications (1)

Application Number Title Priority Date Filing Date
US3628410D Expired - Lifetime US3628410A (en) 1969-11-21 1969-11-21 Cutoff control for cutting long sheets

Country Status (6)

Country Link
US (1) US3628410A (enrdf_load_stackoverflow)
JP (1) JPS5126675B1 (enrdf_load_stackoverflow)
CA (1) CA930661A (enrdf_load_stackoverflow)
DE (1) DE2046950C3 (enrdf_load_stackoverflow)
FR (1) FR2071723A5 (enrdf_load_stackoverflow)
GB (1) GB1286735A (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803962A (en) * 1972-06-23 1974-04-16 G Koslow Cut-to-length machine
US3834262A (en) * 1971-12-03 1974-09-10 British Steel Corp Stock cutting measurement systems
US3880033A (en) * 1973-06-26 1975-04-29 Molins Machine Co Inc Rotary shear assembly
US3901114A (en) * 1973-10-11 1975-08-26 Black Clawson Co Saw assembly
US3921428A (en) * 1975-01-02 1975-11-25 Sterling Tool Company Web processing apparatus and electric control therefor
US3962942A (en) * 1974-11-29 1976-06-15 Molins Machine Company, Inc. Cutoff mechanism
US3971277A (en) * 1975-06-19 1976-07-27 Owens-Corning Fiberglas Corporation Intermittently operable rotary chopping apparatus for matted fibrous material
US3982454A (en) * 1974-06-11 1976-09-28 L. Schuler Gmbh Apparatus for the control and regulation of cutting interval and synchronism at a cutting mechanism for the machining of strip material
US4058037A (en) * 1976-03-18 1977-11-15 Hitachi Metals, Ltd. Full rotation type, sheet web shearing machine
US4635511A (en) * 1982-04-29 1987-01-13 Mitsubishi Denki Kabushiki Kaisha Cutter control apparatus
US4854147A (en) * 1986-03-24 1989-08-08 The Boeing Company Wire pinch mark applicator
US6295909B1 (en) * 1997-07-10 2001-10-02 Kvaerner Technology & Research Limited Shearing metal strip
US20050223861A1 (en) * 2004-04-08 2005-10-13 Gilberto Spirito Unit for feeding and cutting into lengths a strip of wrapping material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3681782D1 (de) * 1985-06-07 1991-11-07 Somar Corp Verfahren und vorrichtung zum bohren von geweben in einer gewebeklebevorrichtung.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1824163A (en) * 1924-07-03 1931-09-22 Maier William Cutting machine
US2193259A (en) * 1939-06-05 1940-03-12 Morgan Construction Co Shearing apparatus
US2548427A (en) * 1944-03-08 1951-04-10 Loewy Eng Co Ltd Control apparatus for periodically operating machines
GB736599A (en) * 1952-09-05 1955-09-14 Loewy Eng Co Ltd Improvements in and relating to rotating shears
US2861635A (en) * 1955-01-27 1958-11-25 United States Steel Corp Power transmitting apparatus
US3176565A (en) * 1962-10-08 1965-04-06 Albert F Shields Counterbalancing means for cutoff knives
US3424041A (en) * 1964-08-21 1969-01-28 Parsons & Whittemore Shearing machines for strip products particularly to those used in the corrugated board industry

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1824163A (en) * 1924-07-03 1931-09-22 Maier William Cutting machine
US2193259A (en) * 1939-06-05 1940-03-12 Morgan Construction Co Shearing apparatus
US2548427A (en) * 1944-03-08 1951-04-10 Loewy Eng Co Ltd Control apparatus for periodically operating machines
GB736599A (en) * 1952-09-05 1955-09-14 Loewy Eng Co Ltd Improvements in and relating to rotating shears
US2861635A (en) * 1955-01-27 1958-11-25 United States Steel Corp Power transmitting apparatus
US3176565A (en) * 1962-10-08 1965-04-06 Albert F Shields Counterbalancing means for cutoff knives
US3424041A (en) * 1964-08-21 1969-01-28 Parsons & Whittemore Shearing machines for strip products particularly to those used in the corrugated board industry

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3834262A (en) * 1971-12-03 1974-09-10 British Steel Corp Stock cutting measurement systems
US3803962A (en) * 1972-06-23 1974-04-16 G Koslow Cut-to-length machine
US3880033A (en) * 1973-06-26 1975-04-29 Molins Machine Co Inc Rotary shear assembly
US3901114A (en) * 1973-10-11 1975-08-26 Black Clawson Co Saw assembly
US3982454A (en) * 1974-06-11 1976-09-28 L. Schuler Gmbh Apparatus for the control and regulation of cutting interval and synchronism at a cutting mechanism for the machining of strip material
US3962942A (en) * 1974-11-29 1976-06-15 Molins Machine Company, Inc. Cutoff mechanism
US3921428A (en) * 1975-01-02 1975-11-25 Sterling Tool Company Web processing apparatus and electric control therefor
US3971277A (en) * 1975-06-19 1976-07-27 Owens-Corning Fiberglas Corporation Intermittently operable rotary chopping apparatus for matted fibrous material
US4058037A (en) * 1976-03-18 1977-11-15 Hitachi Metals, Ltd. Full rotation type, sheet web shearing machine
US4635511A (en) * 1982-04-29 1987-01-13 Mitsubishi Denki Kabushiki Kaisha Cutter control apparatus
US4854147A (en) * 1986-03-24 1989-08-08 The Boeing Company Wire pinch mark applicator
US6295909B1 (en) * 1997-07-10 2001-10-02 Kvaerner Technology & Research Limited Shearing metal strip
US20050223861A1 (en) * 2004-04-08 2005-10-13 Gilberto Spirito Unit for feeding and cutting into lengths a strip of wrapping material
US7437982B2 (en) * 2004-04-08 2008-10-21 G.D S.P.A. Unit for feeding and cutting into lengths a strip of wrapping material
CN100478256C (zh) * 2004-04-08 2009-04-15 吉地股份公司 馈送包装材料纸带并切割成多段用的装置

Also Published As

Publication number Publication date
DE2046950C3 (de) 1973-09-27
GB1286735A (en) 1972-08-23
FR2071723A5 (enrdf_load_stackoverflow) 1971-09-17
DE2046950B2 (de) 1973-03-01
CA930661A (en) 1973-07-24
DE2046950A1 (de) 1971-06-16
JPS5126675B1 (enrdf_load_stackoverflow) 1976-08-07

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