US3877333A - Sheet locating device - Google Patents

Sheet locating device Download PDF

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Publication number
US3877333A
US3877333A US413203A US41320373A US3877333A US 3877333 A US3877333 A US 3877333A US 413203 A US413203 A US 413203A US 41320373 A US41320373 A US 41320373A US 3877333 A US3877333 A US 3877333A
Authority
US
United States
Prior art keywords
sheet
web
severed
leading edge
block
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
US413203A
Other languages
English (en)
Inventor
Edward Albert Erne Illingworth
Eric Stone
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.)
Ilford Imaging UK Ltd
Original Assignee
Ilford 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 Ilford Ltd filed Critical Ilford Ltd
Application granted granted Critical
Publication of US3877333A publication Critical patent/US3877333A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/765—Photosensitive materials characterised by the base or auxiliary layers characterised by the shape of the base, e.g. arrangement of perforations, jags
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D15/00—Apparatus for treating processed material
    • G03D15/04—Cutting; Splicing
    • G03D15/043—Cutting or splicing of filmstrips
    • G03D15/046—Automatic cutting
    • 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
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
    • Y10T83/0419—By distorting within elastic limit
    • 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
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
    • Y10T83/0443—By fluid application
    • 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
    • Y10T83/04—Processes
    • Y10T83/0505—With reorientation of work between cuts
    • 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
    • Y10T83/04—Processes
    • Y10T83/0524—Plural cutting steps
    • 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
    • Y10T83/4564—With means to produce plurality of work-feed increments per tool cycle
    • Y10T83/4567—Including supplemental work-feed 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
    • Y10T83/444—Tool engages work during dwell of intermittent workfeed
    • Y10T83/4645—With means to clamp work during dwell
    • 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
    • Y10T83/6572—With additional mans to engage work and orient it relative to tool station

Definitions

  • ABSTRACT Method of performing a cross cutting operation on a travelling flexible web of material to form discrete sheets of material followed by an operation on the trailing edge of the thus formed severed sheet of material comprises moving the leading edge of the web to a clamping station, clamping the leading edge of the web, cross cutting the web to form a severed sheet of the flexible web material, causing the middle of the severed sheet to bow in a predetermined curvature whilst maintaining the trailing edge of the sheet parallel to the position in which it was cross cut, thus causing the trailing edge of the sheet to move towards the leading edge of the sheet by a pre-determined distance and then performing the operation on the trailing edge of the severed sheet.
  • SHEET LOCATING DEVICE BACKGROUND OF THE INVENTION This invention relates to the severing of travelling web material into discrete sheets on which a further op eration is performed.
  • the web is severed by means of a cross-cutting operation and if any further operation is required to be performed on the thus formed trailing edge of the severed sheet, it is then required that the severed sheet be moved so as to remove its trailing edge from the means which performs the cross-cutting.
  • a method of performing a cross cutting operation on a travelling flexible web of material to form discrete sheets of material followed by an operation on the trailing edge of the thus formed severed sheet of material comprises moving the leading edge of the web to a clamping station, clamping the leading edge of the web, cross cutting the web to form a severed sheet of the flexible web material, causing the middle of the severed sheet to bow in a pre-determined curvature whilst maintaining the trailing edge of the sheet parallel to the position in which it was cross cut, thus causing the trailing edge of the sheet to move towards the leading edge of the sheet by a predetermined distance and then performing the operation on the trailing edge of the severed sheet.
  • the middle of the severed sheet of flexible web material can be caused to bow by means of air pressure, by means of suction or by a mechanical means forcing the middle of the severed sheet into a spaced located on one side of the sheet.
  • the middle of the severed sheet is caused to bow by making it conform to the shape of a block having a concave hollow therein (concave block).
  • the sheet is made to conform to the shape of the concave block by means of a convex block which is ofthe same curvature as the concave block and which forces the middle of the sheet into the middle of the concave shaped block. This may be aided either by air pressure directed from the convex block towards the concave block or by suction means in the concave block.
  • the convex block may have a flat shoulder member which clamps the severed sheet to a flat portion of the platform holding the free end flat and parallel to the position in which it was cross-cut after the convex block forces the middle of the severed sheet into the concave block.
  • a separate clamp is provided which clamps the severed sheet to a flat portion of the platform;
  • both the concave and convex blocks are covered with protective material, e.g., looped nylon velvet. This serves to minimise any pressure effects on the sheet.
  • One use of the method of the present invention is in the production of round cornered photosensitive films which are cut from webs of photosensitive film material.
  • sheets of film material are X-ray films, it being desirable that X-ray films have round corners to prevent damage to the envelopes in which the films are to be placed.
  • a method of preparing round cornered photosensitive film sheets from a web of photosensitive film material comprises moving the leading edge of the web to a clamping station, clamping the leading edge of the web, removing the corners of the leading edge of the web, crosscutting the web to form a severed sheet of film, causing the middle of the severed sheet to bow in a predetermined curvature, whilst maintaining the trailing edge of the severed sheet parallel to the position in which it was cross cut, thus causing the trailing edge of the sheet to move towards the leading edge of the sheet by a pre-determined amount and then removing the corners from the trailing edge of the severed sheet.
  • the four corners of the sheet of film are removed by a punching operation.
  • the severed sheet is caused to bow in the middle by forcing it into a convave block by means of a convex block.
  • both the convex block and the concave block have shoulders thereon between which the film is clamped holding it flat and parallel to the position in which it was cross cut.
  • both the convex and the concave blocks are covered with protective material, e.g., looped nylon velvet.
  • protective material e.g., looped nylon velvet. This is a non-frillable material and serves to minimise pressure marks on the photosensitive sheet material.
  • an apparatus for cross cutting and roundcornering webs of flexible material into discrete sheets each of which have round corners which apparatus comprises a platform over which a travelling web of material can be caused to move, a clamping means located on the platform for clamping the leading edge of the flexible web material, a web cross cutting means, a concave shaped block located either above or below the path of the web between the clamping means and the cross cutting means, and on the reverse side of the web from the concave block a convex block having the same curvature as the concave block and which is loated in register therewith and means to enable the convex block to locate in the concave block thereby causing a sheet of web therebetween to bow in a predetermined curvature, clamping means being provided which serve to clamp the severed film holding it flat and parallel to the position in which it is cut together with punching means for round-cornering each of the four corners of the severed sheet.
  • both the concave and convex blocks are covered with protective material, e.g., looped nylon velvet.
  • the apparatus also comprises a pair of driven nip rollers through which the web is traversed and which serve to move the web through the apparatus and also to apply a tension to the web.
  • FIG. 1 of the accompanying drawings is a diagrammatic view of an apparatus according to the present invention and by means of which the method of the present invention may be performed.
  • FIG. 2 of the accompanying drawings represents schematically the operative steps of the method of the present invention.
  • FIG. 3 is a view of a modified embodiment of the invention.
  • a clamp 2 which acts to clamp the leading edge of a travelling web W as it is fed through the apparatus.
  • Located on either side of the clamping means are two punches 3 and 4.
  • On the other end of the platform is a guillotine 5 which serves to cross-cut a web.
  • Located inwards from the guillotine 5 are two punches 6 and 7 for round-cornering the trailing edge of the sheet when formed.
  • the punches 3, 4, 6 and 7 are connected to a superstructure which is located over the platform but which for simplicity is not shown in the drawing.
  • Located beneath each punch is a die into which in operation the punch fits.
  • a concave block 9 having a shoulder 10 and a block 11 which is convex on its under surface, located above concave block 9 in register therewith and which is of such a curvature that it fits into the concave block 9.
  • Both the innersurface of concave block 9 and the outersurface of convex block 11 are covered with a protective covering of looped nylon velvet, as is the undersurface of the clamp 12 and the surfaces of the clamp 2 and the shoulder 10 over which the web W passes.
  • a clamp 12 is located above a flat part of the platform 1 (this clampis connected to the superstructure of the device which is not shown). Also present on the platform are a mounted pair of nip rollers 13.
  • the travelling flexible web W is fed through the guillotine 5 which is in the open position over the concave block 9 into the nip of the pair of nip rollers 13 and then through the clamping means 2.
  • the travelling web W is indexed to travel so that its leading edge stops at the end of the'clamping means 2.
  • the web is then clamped in the clamping means 2.
  • the punches 3 and 4 then act to round-corner the corners of the leading edge of the flexible web material.
  • the guillotine 5 then acts to sever the web material forming a severed sheet of flexible material.
  • the convex block 11 then moves down causing the flexible sheet to conform to the shape of the concave block 9, The sheet of flexible material thus is bowed to a pre-determined curvature,
  • FIG. 1 a clamp 12 is shown which is located above the shoulder 10.
  • the clamping means employed is a flat shoulder 14 attached to the block 11 which is located over the shoulder 10.
  • FIG. 2 the four drawings show the four main operative steps of the method.
  • the first drawing shows the step (a) of clamping the leading edge of the travelling flexible web W.
  • the second drawing shows the step (b) of crosscutting the travelling to form a discrete sheet.
  • the third drawing shows the step (c) of bowing the middle of the discrete sheet in a pre-determined curvature.
  • the effect of this step is to move the trailing edge of the discrete sheet towards its leading edge by a predetermined distance L whilst maintaining this edge parallel to the position in which it was crosscut.
  • the fourth drawing shows the step (d) of performing an operation on the displaced trailing edge of the sheet.
  • an operation may simultaneously by performed on the leading edge of the sheet.
  • an operation on the leading edge of the sheet may be performed at any time after step (a) for example after step (a) and before step (b).
  • a method of performing a cross cutting operation on a travelling flexible web of material to form discrete sheets of material followed by an operation on the trailing edge of the thus formed severed sheet of material comprises moving the leading edge of the web to a clamping station, clamping the leading edge of the web, cross cutting the web to form a severed sheet of the flexible web material, causing the middle of the severed sheet to bow in a pre-determined curvature whilst maintaining the trailing edge of the sheet parallel to the position in which it was cross cut, thus causing the trailing edge of the sheet to move towards the leading edge of the sheet by a predetermined distance and then performing the operation on the trailing edge of the severed sheet.
  • convex block has a flat shoulder member which clamps the severed sheet to a flat portion of the platform holding its free end flat and parallel to the position in which it was cross-cut after the convex blocks forces the middle of the severed sheet into the concave block.
  • a method of preparing round-cornered photosensitive film sheets from a web of photosensitive film material comprises moving the leading edge of the web to a clamping station, clamping the leading edge of the web, removing the corners of the leading edge of the web, cross-cutting the web to form a severed sheet of film, causing the middle of the severed sheet to bow in a predetermined curvature whilst maintaining the trailing edge of the severed sheet parallel to the position in which it was cross-cut, thus causing the trailing edge of the sheet to move towards the leading edge of the sheet by a pre-determined amount and then removing the corners from the trailing edge of the severed sheet.
  • An apparatus for cross-cutting and roundcornering webs of flexible material into discrete sheets each of which have round corners which apparatus comprises a platform over which a travelling web of material is caused to move, a clamping means located on the platform for clamping the leading edge of the flexible web material, a web cross cutting means, a concave shaped block located on one side of the path of the web between the said clamping means and the said cross cutting means, and on the reverse side of the web from the said concave block a convex block having the same curvature as the concave block and which is located in register with the said concave block, and means to enable the convex block to locate in the concave block thereby causing a sheet of web therebetween to bow in a pre-determined curvature, there being provided clamping means which, in operation, serve to clamp the film holding it flat and parallel to the position in which it is cut, together with punching means for round-cornering each of the four corners of the sheet.
  • Apparatus according to claim 16 which further comprises a pair of driven nip rollers.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Details Of Cutting Devices (AREA)
  • Advancing Webs (AREA)
US413203A 1972-11-22 1973-11-06 Sheet locating device Expired - Lifetime US3877333A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5386872A GB1386024A (en) 1972-11-22 1972-11-22 Apparatus for and method of cutting web material

Publications (1)

Publication Number Publication Date
US3877333A true US3877333A (en) 1975-04-15

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ID=10469245

Family Applications (1)

Application Number Title Priority Date Filing Date
US413203A Expired - Lifetime US3877333A (en) 1972-11-22 1973-11-06 Sheet locating device

Country Status (8)

Country Link
US (1) US3877333A (en(2012))
JP (1) JPS50489A (en(2012))
BE (1) BE807584A (en(2012))
CH (1) CH571992A5 (en(2012))
DE (1) DE2357840A1 (en(2012))
FR (1) FR2208394A5 (en(2012))
GB (1) GB1386024A (en(2012))
IT (1) IT997609B (en(2012))

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013357A (en) * 1974-08-23 1977-03-22 Mita Industrial Company, Ltd. Copying machine in which, paper jamming at copying paper cutting mechanism is prevented
US4034634A (en) * 1975-10-03 1977-07-12 Arbter C Apparatus and method for unwinding and cutting a fabric web into individual uniform lengths
US4407177A (en) * 1980-06-16 1983-10-04 E. I. Du Pont De Nemours And Company On-line corner rounder
US4519285A (en) * 1983-06-30 1985-05-28 The Boeing Company Cutting method and apparatus for tape laying machines
US5022297A (en) * 1990-05-25 1991-06-11 E. I. Du Pont De Nemours And Company Method and apparatus for preparing sheet stacks
US5509645A (en) * 1994-02-01 1996-04-23 Minolta Co., Ltd. Sheet sorter with hole punching assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1497765A (en) * 1921-02-25 1924-06-17 Morgan & Wright Cutting machine
US3007360A (en) * 1959-03-09 1961-11-07 Western Electric Co Apparatus for selective shearing of contacts from tapes including means to retract hose tapes not being sheared
US3112665A (en) * 1960-03-08 1963-12-03 Otto Hansel Junior G M B H Method and apparatus for wrapping candy or the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1497765A (en) * 1921-02-25 1924-06-17 Morgan & Wright Cutting machine
US3007360A (en) * 1959-03-09 1961-11-07 Western Electric Co Apparatus for selective shearing of contacts from tapes including means to retract hose tapes not being sheared
US3112665A (en) * 1960-03-08 1963-12-03 Otto Hansel Junior G M B H Method and apparatus for wrapping candy or the like

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013357A (en) * 1974-08-23 1977-03-22 Mita Industrial Company, Ltd. Copying machine in which, paper jamming at copying paper cutting mechanism is prevented
US4034634A (en) * 1975-10-03 1977-07-12 Arbter C Apparatus and method for unwinding and cutting a fabric web into individual uniform lengths
US4407177A (en) * 1980-06-16 1983-10-04 E. I. Du Pont De Nemours And Company On-line corner rounder
US4519285A (en) * 1983-06-30 1985-05-28 The Boeing Company Cutting method and apparatus for tape laying machines
US5022297A (en) * 1990-05-25 1991-06-11 E. I. Du Pont De Nemours And Company Method and apparatus for preparing sheet stacks
US5509645A (en) * 1994-02-01 1996-04-23 Minolta Co., Ltd. Sheet sorter with hole punching assembly

Also Published As

Publication number Publication date
CH571992A5 (en(2012)) 1976-01-30
GB1386024A (en) 1975-03-05
BE807584A (fr) 1974-05-21
DE2357840A1 (de) 1974-05-30
IT997609B (it) 1975-12-30
FR2208394A5 (en(2012)) 1974-06-21
JPS50489A (en(2012)) 1975-01-07

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