US3552249A - Mechanism for cutting a moving web of sheet material - Google Patents

Mechanism for cutting a moving web of sheet material Download PDF

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Publication number
US3552249A
US3552249A US735331A US3552249DA US3552249A US 3552249 A US3552249 A US 3552249A US 735331 A US735331 A US 735331A US 3552249D A US3552249D A US 3552249DA US 3552249 A US3552249 A US 3552249A
Authority
US
United States
Prior art keywords
web
roller
carriage
driven roller
blades
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
US735331A
Other languages
English (en)
Inventor
Reginald Leonard Ballard
Ensor William Harold Steer
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.)
PHILLIPS ENGINEERING Ltd
Original Assignee
PHILLIPS ENGINEERING Ltd
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 PHILLIPS ENGINEERING Ltd filed Critical PHILLIPS ENGINEERING Ltd
Application granted granted Critical
Publication of US3552249A publication Critical patent/US3552249A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H20/00—Advancing webs
    • B65H20/24—Advancing webs by looping or like devices
    • 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
    • B23D33/00—Accessories for shearing machines or shearing devices
    • B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2183—Product mover including gripper means
    • Y10T83/2185—Suction gripper
    • 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
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4526—Dwell caused by imposing reverse motion on portion of flexible moving work
    • 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
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6582—Tool between tandem arranged work carrying means
    • 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
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8841—Tool driver movable relative to tool support
    • Y10T83/8843—Cam or eccentric revolving about fixed axis

Definitions

  • ABSTRACT A mechanism for cutting a moving web of sheet material to form a plurality of separate sheets of material, the mechanism comprising a pair of relatively movable blades disposed between a pair of driven rollers around which the web of material is passed, a movable carriage having a freely [54] MECHANISM FOR CUTTINGAMOVING WEB 0F rotatable guide roller around which the web passes before SHEET MATERIAL passing around the first of said driven rollers, means for mo,v-
  • This invention relates to mechanism for cutting a moving web of sheet material at intervals and in directions transverse to the length ofthe web in order to form a plurality of separate sheets of material, the object of the invention being to provide such a mechanism in an improved form.
  • Mechanism in accordance with the invention comprises a pair of relatively movable blades, a first driven roller and a second driven roller disposed respectively on opposite sides of said blades, a movable carriage having a freely rotatable guide roller around which in use the web of sheet material is passed before being passed around said first driven roller, suction means associated with each of said driven rollers for holding sheet material on to the peripheries thereof, and means for actuating said blades to cut the web of sheet material, said means being actuable in synchronism with the movement of said carriage so that cutting is effected at a time when the web of material passing from said first driven roller to the second driven roller and between said blades is temporarily arrested by reason of the carriage moving in a direction which will cause a loop to be formed in the material before it reaches the first driven roller, the drive between the first driven roller and the web of material and/or the drive between the first driven roller and driving means to which it is connected being such as to permit slip between the roller and the web whilst the latter is temporarily arrested as a
  • said carriage is mounted for reciprocable linear motion and is driven by means of a crank having an adjustable throw.
  • the suction means associated with each of said driven rollers may comprise a stationary pipe or chamber to which suction is applied and which communicates with grooves or slots formed in the periphery of the roller so as to form a vacuum therein when said grooves of slots are covered by the web or sheets ofcut material.
  • FIG. 1 is a sectional elevation showing one example of a mechanism in accordance with the invention
  • FIG. 2 is a section on line 2-2 of FIG. 1 showing a detail of the mechanism
  • FIG. 3 is a section on line 3-3 of FIG. 1 showing another detail of the mechanism.
  • a pair of relatively movable blades which conveniently comprises a fixed blade and a movable blade 11.
  • On opposite sides of said blades are mounted respectively a first driven roller 12 and a second driven roller 13.
  • the first driven roller 12 is connected by means of a conventional friction clutch to driving means (not shown) which when the clutch is not slipping will drive said roller at a speed such that its periphery is moving twice as fast as the speed of a web of material 14 which in use will be advanced towards said first driven roller by means of any suitable form of feed rolls (not shown), it being understood that said web of material which may be of paper or any other material can have matter printed upon it or be subject to any other like operation as may be desired.
  • the second driven roller 13 is driven at a speed which is slightly greater than twice the web speed.
  • a movable carriage 15 which is conveniently mounted on a guide 16 for reciprocable rectilinear motion, one end of said carriage being connected to a crank 17 of variable throw.
  • the opposite end of said carriage carries a freely rotatable guide roller 18 and the arrangement is such that said carriage can move in a direction parallel to a plane containing the axes of said driven rollers.
  • said carriage is disposed beneath the driven rollers 12 and 13 and beneath the carriage there is provided a further freely rotatable roller 19 around which the web of material is led before being passed round said freely rotatable roller 18 on the carriage and thence round the first driven roller 12, between the relatively movable blades 10 and 11 and thence on to the second driven roller 13.
  • the aforesaid carriage 15 will be reciprocated and it will be appreciated that in one direction of motion (i.e. when moving to the right as shown in FIG. 1) it will be adapted to form a loop of material between the first driven roller 12 and said further roller 19 beneath the carriage.
  • the drive between the periphery of the first driven roller 12 and the web of material and/or the drive between said roller and the friction clutch permits slip to occur between the periphery of the first driven roller and the web whilst said loop is being formed and at this moment it will be appreciated that the web of material in front of the first driven roller 12 will be temporarily arrested.
  • suction means are associated with each driven roller for holding the material on to the periphery of each roller.
  • the first driven roller 12 there is provided a chamber 24 which partially em braces the exterior of the roller on that side thereof nearer to said blades, the roller being formed with a plurality of axially spaced circumferentially extending grooves 25 which communicate with the interior of said chamber and to which suction will be applied.
  • the grooves 25 will be covered by the web and a vacuum will be formed in the grooves so that the web will be held on to the periphery of the roller, it being understood however that a slip can occur between the roller and the web when necessary as above described.
  • a plurality of stripper fingers 26 are provided which extend into said grooves for stripping the web from the roller 12 and directing it towards the blades 10 and 11.
  • a pipe 27 connected to a source of suction is inserted into the interior of the roller which is hollow and said pipe communicates with a chamber 28 which engages the inner periphery of the roller over a small arc thereof.
  • the roller itself is formed with a plurality of circumferentially spaced axially extending slots or rows of holes 29 which communicate with said chamber 28 when aligned therewith so that a vacuum will be formed beneath the cut sheets of material over a small are adjacent to the upper part of the roller.
  • the sheets of material will there fore be carried part way round the second roller before meeting any convenient form of stationary stripping means 30 which will strip the sheets from the roller and enable them to fall into any conveniently positioned receptacle (not shown).
  • the throw of the aforesaid crank can be adjusted and the moment of actuation of said blades can also be adjusted to vary the intervals between successive actuations of the blades in order to vary the length of sheets that are cut, whilst the fact that the web is temporarily arrested whilst cutting is being effected will enable the cuts to be made with great accuracy.
  • Mechanism for cutting a moving web of sheet material at intervals and in directions transverse to the length of the web in order to form a plurality of separate sheets of material comprising a pair of relatively movable blades, means for advancing said web towards the blades at a predetermined speed, a first driven roller and means for driving said first driven roller at a peripheral speed greater than said predetermined speed, a second driven roller, said first and second rollers being disposed respectively on opposite sides of said blades, a carriage having a freely rotatable guide roller around which in use the web of sheet material is passed before being passed around said first driven roller, means for reciprocating said carriage, suction "means associated with each of saiddriven rollers for holding sheet'material on to the vperipheries thereof, and means for actuating said blades to cut 'betweensaid web'of material and said means for driving said first driven roller.
  • Mechanism as claimedin claim 1 wherein the suction means associatedwith said first'driven' roller comprises a suction chamber disposed externally of the roller and in engagement-therewith, said roller being formed on its exterior with a plurality. of axially spaced circumferentially extending grooves.
  • suction means associated with said second driven roller comprises'a suction chamber arranged inside the roller so as to extend over a smallarc of the inner periphery thereof, said roller being'formed-with a plurality of circumferentially spaced apertures which are arranged to communicate with said suction chamber when aligned therewith whereby suction will be applied to the exterior of the roller over a small arc thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Advancing Webs (AREA)
  • Replacement Of Web Rolls (AREA)
US735331A 1967-06-09 1968-06-07 Mechanism for cutting a moving web of sheet material Expired - Lifetime US3552249A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB26739/67A GB1154658A (en) 1967-06-09 1967-06-09 Mechanism for Cutting a Moving Web of Sheet Material.

Publications (1)

Publication Number Publication Date
US3552249A true US3552249A (en) 1971-01-05

Family

ID=10248471

Family Applications (1)

Application Number Title Priority Date Filing Date
US735331A Expired - Lifetime US3552249A (en) 1967-06-09 1968-06-07 Mechanism for cutting a moving web of sheet material

Country Status (6)

Country Link
US (1) US3552249A (de)
CH (1) CH489342A (de)
DE (1) DE1761566B1 (de)
FR (1) FR1570794A (de)
GB (1) GB1154658A (de)
NL (1) NL6807913A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000671A (en) * 1972-06-12 1977-01-04 Harper & Tunstall Limited Transport guide for pliable sheet material
US4014233A (en) * 1975-03-21 1977-03-29 Hoechst Aktiengesellschaft Apparatus for severing a sheet of material from a web
US4024782A (en) * 1974-04-01 1977-05-24 Eastman Kodak Company Apparatus for cutting the trailing end of an expiring web

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667924A (en) * 1950-08-22 1954-02-02 Mcbee Co Shuttle mechanism for feeding web to punch presses
US3085457A (en) * 1960-03-11 1963-04-16 Champlain Company Inc High speed web stopping mechanism
US3159521A (en) * 1960-12-12 1964-12-01 Strunck & Co H Apparatus to sever, print and apply labels to containers
US3191475A (en) * 1963-03-18 1965-06-29 Continental Can Co Shear assembly for a moving web

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE677882C (de) * 1937-01-21 1939-07-05 Rudolf Haas Dr Ing Verfahren und Vorrichtung zum Veraendern der Breite von Papierbahnen
DE723878C (de) * 1939-01-28 1942-08-12 Mechanische Werkstaette Ing F Foerdereinrichtung fuer Bahnen insbesondere Papierbahnen an Querschneidern und Faltmaschinen
DE836744C (de) * 1949-11-03 1952-04-17 Kurt Duennebier Vorrichtung fuer das absatzweise Zufuehren bestimmter Teillaengen der von Pipier- oder sonstigen Werkstoffrollen entnommenen Werkstoffbaender zu einer Verarbeitungsmaschine
US3013458A (en) * 1956-08-03 1961-12-19 Miller Wrapping & Sealing Mach Resilient stripping device for intermittently actuated cutter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667924A (en) * 1950-08-22 1954-02-02 Mcbee Co Shuttle mechanism for feeding web to punch presses
US3085457A (en) * 1960-03-11 1963-04-16 Champlain Company Inc High speed web stopping mechanism
US3159521A (en) * 1960-12-12 1964-12-01 Strunck & Co H Apparatus to sever, print and apply labels to containers
US3191475A (en) * 1963-03-18 1965-06-29 Continental Can Co Shear assembly for a moving web

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000671A (en) * 1972-06-12 1977-01-04 Harper & Tunstall Limited Transport guide for pliable sheet material
US4024782A (en) * 1974-04-01 1977-05-24 Eastman Kodak Company Apparatus for cutting the trailing end of an expiring web
US4014233A (en) * 1975-03-21 1977-03-29 Hoechst Aktiengesellschaft Apparatus for severing a sheet of material from a web

Also Published As

Publication number Publication date
FR1570794A (de) 1969-06-13
NL6807913A (de) 1968-12-10
GB1154658A (en) 1969-06-11
CH489342A (de) 1970-04-30
DE1761566B1 (de) 1971-10-14

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