GB2190029A - A film cutting device - Google Patents

A film cutting device Download PDF

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Publication number
GB2190029A
GB2190029A GB08709203A GB8709203A GB2190029A GB 2190029 A GB2190029 A GB 2190029A GB 08709203 A GB08709203 A GB 08709203A GB 8709203 A GB8709203 A GB 8709203A GB 2190029 A GB2190029 A GB 2190029A
Authority
GB
United Kingdom
Prior art keywords
knife
film
advancing
cutting device
speed
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Withdrawn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
GB08709203A
Other versions
GB8709203D0 (en
Inventor
Svend Fischlein
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.)
Eskofot AS
Original Assignee
Eskofot AS
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 Eskofot AS filed Critical Eskofot AS
Publication of GB8709203D0 publication Critical patent/GB8709203D0/en
Publication of GB2190029A publication Critical patent/GB2190029A/en
Withdrawn legal-status Critical Current

Links

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
    • B26D1/12—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 cutting member moving about an axis
    • B26D1/25—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 cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • B26D1/385—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Control Of Cutting Processes (AREA)
  • Making Paper Articles (AREA)
  • Details Of Cutting Devices (AREA)

Description

GB 2 190 029 A 1
SPECIFICATION helical knife is reciprocating.
According to a concrete embodiment one end of Afilm-cutting device the axis of rotation of the knife is displaced about one mm relative to the opposite end of the axis of The invention relates to a film-cutting device 70 rotation.
providing a substantially transverse cut in a length of Thefilm-cutting device according tothe invention film during advancement of thefilm. may be varied in many ways without thereby Agradual cutting of thefilm impliesthatthe knife deviating from the scope of the invention.
must be inclined in response to the advancing speed of thefilm. 75 CLAIMS
According to the invention the knife is a helical knife turnable aboutthe axis of the helix, the speed of 1. Afilm-cutting device providing a substantially rotation of the helical knife being proportional to the transverse cut in a length of film during advancing speed of the length of film. As a result,the advancement of thefilm, characterised bythe knife cut is substantially independent of the advancing 80 being a helical knife turnable aboutthe axis of the speed. Furthermore a suitably inclined axis of helix,the speed of rotation of the helical knife being rotation ensures a substantially transverse cut. proportional tothe advancing speed of thefilm in The invention will be described belowwith such a mannerthatthe cut is substantially referencetothe accompanying drawings, in which independent of the advancing speed.
Figure 1 illustrates a helical cutting device 85 2. Afilm-cutting device as claimed in claim 1, according to the invention, and characterised by the axis of rotation of the helical Figure2 illustrates the axis of rotation of the helix knife being inclined relative to the advancing relative to the advancing direction of the length of direction of the film, the angle to the advancing film. direction being adapted to the inclination of the helix The film-cutting device illustrated in the drawing 90 and the advancing speed of the film in such a manner for cutting a length of film comprises a helical top thatthe cut is substantially transverse.
knife 1 turnable aboutthe axis of the helix. Thetop 3. Afilm-cutting device substantially as knife cuts against a rectilinear bottom knife 2. As a described above with reference to the accompanying result a uniform load of the knife is obtained. When drawings.
the axis of the helix is perpendicularto the advancing direction of the film during advancement of said film, the latter causes an oblique cutting of the length of Printed for Her Majesty's Stationery Office by Croydon Printing Company (1) K) Ltd,9187, D8991685.
film, i.e. one edge of the length of film has moved Published by The Patent Office, 25Southampton Buildings, London, WC2A l AY, slightly beforethe cutting atthe opposite edge from which copies maybe obtained.
occurs. It is, however, possibleto compensate forthe latter by placing the axis of rotation of the helix correspondingly obliquely relative to the advancing direction of the film. However, the cutting must be perpendicularto the advancing direction too when the advancing direction is altered, and the latter object has according to the invention been achieved bythe helical knife rotating at a speed proportional to the advancing speed of the film. Such a proportionality can for instance be provided by means of a gear wheel or a chain drive between the i otary shaft of the knife and the rolls advancing the film.
As an alternativethe angular position of the axis of rotation can be altered in response to the advancing speed, wherebytanoc is proportional to the advancing speed provided the speed of rotation of the knife is constant. The angular position can be determined by means of a microprocessor.
As a rule the speed of rotation of the knife multiplied with tanoc must be proportional to the advancing speed of the film. Thus at a specific advancing speed the product of the speed of rotation of the knife and tanoc must be constant.
One maywish to vary both parameters, e.g. in case of very low advancing speeds on account of limits as to how slowlythe knife can cut.
The knife is made of stainless steel. The springs belowthe knife are suspended in such a mannerthat the helical blade is automatically sharpened.
According to an alternative embodimeritthe
GB08709203A 1986-05-02 1987-04-16 A film cutting device Withdrawn GB2190029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK204886A DK155240C (en) 1986-05-02 1986-05-02 FILM CUTTER FITTING

Publications (2)

Publication Number Publication Date
GB8709203D0 GB8709203D0 (en) 1987-05-20
GB2190029A true GB2190029A (en) 1987-11-11

Family

ID=8109703

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08709203A Withdrawn GB2190029A (en) 1986-05-02 1987-04-16 A film cutting device

Country Status (5)

Country Link
JP (1) JPS6339789A (en)
DE (1) DE3712590A1 (en)
DK (1) DK155240C (en)
GB (1) GB2190029A (en)
NL (1) NL8700980A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371741A2 (en) * 1988-11-30 1990-06-06 Kanzaki Paper Manufacturing Co., Ltd. Rotary cutter
EP0401701A1 (en) * 1989-06-04 1990-12-12 Somar Corporation Thin film bonding apparatus having adjustable film cutoff unit
EP0436065A2 (en) * 1989-12-31 1991-07-10 Somar Corporation Method and apparatus for automatically bonding film to a substrate and cutting the film to desired size
WO2020099804A1 (en) * 2018-11-16 2020-05-22 Compagnie Generale Des Etablissements Michelin System for cutting strips using helical knives and corresponding cutting method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW303574B (en) * 1995-07-06 1997-04-21 Somar Corp
SE509840C2 (en) * 1995-11-06 1999-03-15 Straalfors Ab Cutting device for cutting continuous webs

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB825724A (en) * 1957-08-30 1959-12-23 Paper Converting Machine Co Improvements in or relating to web cutting apparatus
GB988694A (en) * 1960-10-05 1965-04-07 Dunlop Rubber Co Improvements in or relating to apparatus for cutting lengths of rubber or rubber-like material from strips or sheets
GB1228099A (en) * 1968-12-03 1971-04-15
GB1239718A (en) * 1969-03-19 1971-07-21
GB1327076A (en) * 1970-04-15 1973-08-15 Iwatsu Electric Co Ltd Cutting device for a photo-copying machine
GB1571759A (en) * 1977-06-17 1980-07-16 Martin M Rotary shear machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB825724A (en) * 1957-08-30 1959-12-23 Paper Converting Machine Co Improvements in or relating to web cutting apparatus
GB988694A (en) * 1960-10-05 1965-04-07 Dunlop Rubber Co Improvements in or relating to apparatus for cutting lengths of rubber or rubber-like material from strips or sheets
GB1228099A (en) * 1968-12-03 1971-04-15
GB1239718A (en) * 1969-03-19 1971-07-21
GB1327076A (en) * 1970-04-15 1973-08-15 Iwatsu Electric Co Ltd Cutting device for a photo-copying machine
GB1571759A (en) * 1977-06-17 1980-07-16 Martin M Rotary shear machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0371741A2 (en) * 1988-11-30 1990-06-06 Kanzaki Paper Manufacturing Co., Ltd. Rotary cutter
EP0371741A3 (en) * 1988-11-30 1991-07-24 Kanzaki Paper Manufacturing Co., Ltd. Rotary cutter
EP0401701A1 (en) * 1989-06-04 1990-12-12 Somar Corporation Thin film bonding apparatus having adjustable film cutoff unit
US5162071A (en) * 1989-06-04 1992-11-10 Somar Corporation Adjustable film cutoff unit
EP0436065A2 (en) * 1989-12-31 1991-07-10 Somar Corporation Method and apparatus for automatically bonding film to a substrate and cutting the film to desired size
EP0436065A3 (en) * 1989-12-31 1991-12-04 Somar Corporation Method and apparatus for automatically bonding film to a substrate and cutting the film to desired size
WO2020099804A1 (en) * 2018-11-16 2020-05-22 Compagnie Generale Des Etablissements Michelin System for cutting strips using helical knives and corresponding cutting method

Also Published As

Publication number Publication date
GB8709203D0 (en) 1987-05-20
DK155240C (en) 1989-07-17
DK155240B (en) 1989-03-06
DK204886A (en) 1987-11-03
NL8700980A (en) 1987-12-01
DK204886D0 (en) 1986-05-02
JPS6339789A (en) 1988-02-20
DE3712590A1 (en) 1987-11-05

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)