US3468203A - Knives - Google Patents

Knives Download PDF

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Publication number
US3468203A
US3468203A US627978A US3468203DA US3468203A US 3468203 A US3468203 A US 3468203A US 627978 A US627978 A US 627978A US 3468203D A US3468203D A US 3468203DA US 3468203 A US3468203 A US 3468203A
Authority
US
United States
Prior art keywords
web
knife
cutting edge
spindle
framework
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
US627978A
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English (en)
Inventor
Edouard Roger Armelin
Arthur Frederick Geor Plaskett
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.)
Societe dEtudes de Machines Speciales SA
Original Assignee
Societe dEtudes de Machines Speciales SA
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 Societe dEtudes de Machines Speciales SA filed Critical Societe dEtudes de Machines Speciales SA
Application granted granted Critical
Publication of US3468203A publication Critical patent/US3468203A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/02—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member
    • B26D1/025—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a stationary cutting member for thin material, e.g. for sheets, strips or the like
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/956—Ultrasonic
    • 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
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6603—Tool shiftable relative to work-conveying 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
    • Y10T83/8776—Constantly urged tool or tool support [e.g., spring biased]

Definitions

  • the slitting knife which is adapted to bear on the web material during, or prior to, the rewinding operation, is provided with a vibrator.
  • This vibrator may be actuated by for instance an electric pulse generator in order to vibrate the cutting edge of the knife at a sufliciently high frequency to cause the material of the web to disintegrate in the immediate vicinity of contact between the knife cutting edge and the web material, by virtue of one or more factors, alone or in combination; these factors being (a) the contact of the cutting edge with the web material; (b) the impact of the knife caused by the vibrations; (c) the friction caused by the vibrating knife; and (d) the heat generated at the cutting edge by the vibrations.
  • the slitting knife may also be provided with an auxiliary heater for raising the temperature of the cutting edge in order to assist in the disintegration or slitting of the web at the point of contact.
  • apparatus for slitting flexible web material comprising a cutting edge, means for passing a web to be slit past said cutting edge in contact therewith and means for vibrating said cutting edge at a frequency in the sonic or ultrasonic range.
  • a method of slitting flexible web material comprising progressively unwinding a roll of said material, causing the web material to contact a cutting edge which 3,468,203 Patented Sept. 23, 1969 is vibrating at a frequency in the sonic or ultrasonic range and rewinding said web material into a plurality of separate rolls of narrower width.
  • FIGURE 1 is an end view of one embodiment
  • FIGURE 2 is a sectional view on line 2-2 of FIG- URE 1;
  • FIGURE 3 is an end view of a second embodiment
  • FIGURE 4 is a sectional view on line 4--4 of FIG- URE 3.
  • FIGURES l and 2 there is shown a supporting framework 20 having a rotatable spindle 2 supporting a roll 1 of web which is to be slit and rewound as two separate rolls 3, 4 on a further spindle 5 which may be driven by means such as an electric motor (not shown) to rewind the web.
  • a rotatable spindle 2 supporting a roll 1 of web which is to be slit and rewound as two separate rolls 3, 4 on a further spindle 5 which may be driven by means such as an electric motor (not shown) to rewind the web.
  • a knife 6 having a cutting edge 22 is spring-loaded so as to bear tangentially on the web material 21 and slit it into the two rolls 3 and 4 as it is rewound under the cutting edge 22 onto the spindle 5.
  • the knife 6 is pivoted at pivot point 7 on the framework 20 and rigidly connected to a loading lever 23 which is attached to an anchored tension spring 8 in order to retain and load the cutting edge 22 in contact with the web 21.
  • any suitable means may be incorporated in the anchorage of the spring 8, or otherwise, to adjust the pressure between the knife and the web.
  • the knife 6 is also provided with a vibrator 9' attached to the knife and actuated by a suitable pulse generator.
  • the pulse generator 24 may be of any convenient form but must be capable of vibrating the knife about its pivot 7 at a frequency in at least the sonic range, although ultrasonic frequencies in excess of 20,000 c.p.s. are preferable.
  • an electronic multi-vibrator capable of generating square wave electric pulses, which may be set to any desired frequency output. If desired however, a simpler mechanical pulse generator may be used to vibrate the knife.
  • the web of flexible material 2 1 is rewound from the roll 1 onto spindle 5, the web 21 passing under the cutting edge 22 to divide the reel 1 into rolls 3 and 4.
  • the knife is vibrated at a frequency preferably in excess of 20,000 c.p.s. by the vibrator 9, thus causing the web material 21 to part under the action of the factors hereinbefore recited. This vibration extends the life of the cutting edge considerably and renders it more effective even when it would be too blunt to use were no vibrations applied to it.
  • an auxiliary heater (not shown) attached to the knife may be employed to raise the temperature of the cutting edge to aid the slitting operation.
  • FIGURES 3 and 4 there is seen a similar arrangement, whereby a framework 20 supports spindles 11 and 15 from which the roll 10 is to be rewound and divided into rolls 13 and 14 after passing over a support roller 12 under a cutting knife 16 again provided with a vibrator 18 actuated by a pulse generator 24.
  • the support roller 12 is provided with an inset groove 25 beneath the knife 16 to allow vibrations of the cutting knife to take place without damaging the cutting edge on the support roller 12 thereof.
  • the cutting knife 16 is firmly clamped by one end 30 on the framework 20 and is constrained to vibrate within a fixed arc dictated by the depth of the groove 25 in the roller 12, bending along its length resiliently, as an alternative to being spring-loaded about a pivot as in the previous arrangement.
  • a plurality of knives may be used dependent upon the number of final rolls of material that it is desired to obtain.
  • Apparatus for slitting flexible web material comprising: a framework, a web supply spindle and a Web take-up spindle rotatably supported by the framework, means for driving the web take-up spindle to unwind the web from the web supply spindle and rewind it into the form of a reel on the web take-up spindle, a knife for slitting the web as it is wound onto the web take-up spindle, said knife being pivotally mounted on said framework and being resiliently biased to bear tangentially on the reel of the web on the take-up spindle, and means for vibrating the knife at a frequency at least in the sonic range.
  • Apparatus for slitting flexible web material comprising: a framework, a web supply spindle and a web take-up spindle rotatably supported by the framework, means for driving the web take-up spindle to unwind the web from the Web supply spindle and rewind it onto the web take-up spindle, a support roller for said web, said support roller being rotatably mounted in said framework in the path followed by the web when being rewound onto the web take-up spindle, a cutting edge for slitting the web, said cutting ede being mounted on the framework and arranged to bear on the web as it passes over the support roller, and means for vibrating the cutting edge at a frequency at least in the sonic range.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Nonmetal Cutting Devices (AREA)
US627978A 1966-04-15 1967-04-03 Knives Expired - Lifetime US3468203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB06668/66A GB1177064A (en) 1966-04-15 1966-04-15 Improvements in or relating to Knives

Publications (1)

Publication Number Publication Date
US3468203A true US3468203A (en) 1969-09-23

Family

ID=10081472

Family Applications (1)

Application Number Title Priority Date Filing Date
US627978A Expired - Lifetime US3468203A (en) 1966-04-15 1967-04-03 Knives

Country Status (4)

Country Link
US (1) US3468203A (en:Method)
BE (1) BE696420A (en:Method)
DE (1) DE1561733A1 (en:Method)
GB (1) GB1177064A (en:Method)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120223A (en) * 1976-11-15 1978-10-17 Windmoller & Holscher Apparatus for making tapes
US4132519A (en) * 1977-10-28 1979-01-02 Rohr Industries, Inc. Controlled porosity of uncured reinforced thermo-setting plastic material
FR2530129A1 (fr) * 1982-07-13 1984-01-20 Yoshida Kogyo Kk Appareil pour former des crochets sur des fermetures a glissiere, a boucles et crochets
US4671149A (en) * 1984-12-27 1987-06-09 Taga Electric Co., Ltd. Method of perforating a texture to be sewn
US5111724A (en) * 1991-05-21 1992-05-12 Gould Inc. Slitter knife arrangement
US5862728A (en) * 1996-06-17 1999-01-26 Soremartec S.A. Apparatus and method for cutting food products
US20050120842A1 (en) * 2003-12-05 2005-06-09 Fuji Photo Film Co., Ltd. Cutting method of fabric material
US20090123239A1 (en) * 2007-11-14 2009-05-14 Hon Hai Precision Industry Co., Ltd. Cutting apparatus with vibrator
US9481103B2 (en) 2011-07-26 2016-11-01 A O Shallinox Gmbh Cutter for dividing a processed product using ultrasound energy and device
IT201600104428A1 (it) * 2016-10-18 2018-04-18 Paper Converting Machine Company Italia S P A Macchina troncatrice per il taglio di log di materiale in foglio e relativo metodo di taglio

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2639212C3 (de) * 1976-08-31 1979-08-23 Feldmuehle Ag, 4000 Duesseldorf Verfahren und Vorrichtung zum Trennen einzelner Nutzen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530134A (en) * 1948-04-01 1950-11-14 Warner Swasey Co Cloth cutter
US3264923A (en) * 1965-02-15 1966-08-09 Walter J Waitzman Tape apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2530134A (en) * 1948-04-01 1950-11-14 Warner Swasey Co Cloth cutter
US3264923A (en) * 1965-02-15 1966-08-09 Walter J Waitzman Tape apparatus

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4120223A (en) * 1976-11-15 1978-10-17 Windmoller & Holscher Apparatus for making tapes
US4132519A (en) * 1977-10-28 1979-01-02 Rohr Industries, Inc. Controlled porosity of uncured reinforced thermo-setting plastic material
FR2530129A1 (fr) * 1982-07-13 1984-01-20 Yoshida Kogyo Kk Appareil pour former des crochets sur des fermetures a glissiere, a boucles et crochets
US4548116A (en) * 1982-07-13 1985-10-22 Yoshida Kogyo K. K. Apparatus for producing hooks on loop-and-hook fasteners
US4671149A (en) * 1984-12-27 1987-06-09 Taga Electric Co., Ltd. Method of perforating a texture to be sewn
US5111724A (en) * 1991-05-21 1992-05-12 Gould Inc. Slitter knife arrangement
US5862728A (en) * 1996-06-17 1999-01-26 Soremartec S.A. Apparatus and method for cutting food products
US20050120842A1 (en) * 2003-12-05 2005-06-09 Fuji Photo Film Co., Ltd. Cutting method of fabric material
US7536937B2 (en) * 2003-12-05 2009-05-26 Fujifilm Corporation Cutting method of fabric material
US20090123239A1 (en) * 2007-11-14 2009-05-14 Hon Hai Precision Industry Co., Ltd. Cutting apparatus with vibrator
US8042438B2 (en) * 2007-11-14 2011-10-25 Hon Hai Precision Co., Ltd. Cutting apparatus with vibrator
US9481103B2 (en) 2011-07-26 2016-11-01 A O Shallinox Gmbh Cutter for dividing a processed product using ultrasound energy and device
IT201600104428A1 (it) * 2016-10-18 2018-04-18 Paper Converting Machine Company Italia S P A Macchina troncatrice per il taglio di log di materiale in foglio e relativo metodo di taglio
EP3311965A1 (en) * 2016-10-18 2018-04-25 Paper Converting Machine Company Italia S.p.A. Cutting-off machine for the cutting of logs of sheet material and relative cutting method

Also Published As

Publication number Publication date
BE696420A (en:Method) 1967-09-01
GB1177064A (en) 1970-01-07
DE1561733A1 (de) 1970-03-12

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