EP1017607A1 - Automatic cutting and stacking device for shaped blanks and method of use - Google Patents

Automatic cutting and stacking device for shaped blanks and method of use

Info

Publication number
EP1017607A1
EP1017607A1 EP98948927A EP98948927A EP1017607A1 EP 1017607 A1 EP1017607 A1 EP 1017607A1 EP 98948927 A EP98948927 A EP 98948927A EP 98948927 A EP98948927 A EP 98948927A EP 1017607 A1 EP1017607 A1 EP 1017607A1
Authority
EP
European Patent Office
Prior art keywords
blanks
cutting
cut
shaped
stacking
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.)
Granted
Application number
EP98948927A
Other languages
German (de)
French (fr)
Other versions
EP1017607B1 (en
Inventor
Herbert Sybrant Van De Velde Keyser
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.)
Solutia Europe BVBA SPRL
Original Assignee
Solutia Europe BVBA SPRL
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 Solutia Europe BVBA SPRL filed Critical Solutia Europe BVBA SPRL
Priority to EP98948927A priority Critical patent/EP1017607B1/en
Publication of EP1017607A1 publication Critical patent/EP1017607A1/en
Application granted granted Critical
Publication of EP1017607B1 publication Critical patent/EP1017607B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers

Definitions

  • This invention relates to an automatic cutting and stacking device for cut shaped blanks and method of use.
  • the equipment is beneficially suitable for the manufacture and handling of cut shaped interlayer blanks.
  • the equipment of this invention comprises: a feeding mechanism generally embodying a surface that feeds accurately a film under a set angle along a set arc into the cutting unit; a cutting unit that cuts the shaped film squarely accross its circular contours; and a stacking system that stacks, in a single planar movement, the blanks at their cut positions.
  • Cut shaped blanks are used in automobile windshields, in particular windshields having a tinted band along the upper side.
  • the originally straight web of for example polyvinyl butyral interlayer
  • the so curved web is subsequendy cut to produce the appropriate cut shaped blanks which can be used as interlayer between two sheets of glass for the manufacture of laminated windshields.
  • the cutting and the stacking of such blanks is generally performed manually, chiefly because of the non-linear shape of the blanks in casu two (opposite) sides are circular whereas the (opposite) cut sides are generally straight but not parallel.
  • a machine comprising: a feeding table; a cutting device; and an indexing table.
  • the invention herein thus relates to an automatic cutting and stacking device for arcuately shaped blanks comprising:
  • a stacking device comprising an indexing table with an attached slide plate and a base plate.
  • the feeding mechanism is, in a preferred embodiment, operated by means of a feeding wheel 12 which propels a set length of film to the cutting device.
  • the cutting device 2 can be represented by a stationary bed knife 21 combined with a traversing rotating knife 22.
  • the angle between the bed knife and the centerline of the feeding wheel shall be adjustable to thus achieve perpendicular cuts for any selected radius.
  • Indexing table 33 provided with base plate 3, is lowered, in a manner synchronized to the operation of the cutting device, by increments substantially corresponding to the thickness of the cut shaped blanks.
  • the base plate supporting the formed stack of cut blanks can be rolled of the indexing table and thus serve for whatever application and/ or treatment can be in order.
  • Fig. 1 is a plan view representing the automatic cutting and stacking device in accordance with the invention herein;
  • Fig. 2a; 2b; 2c; 2d; 2e; and 2f represent sectional views of the invention with respect to the operational sequence of the cutting and stacking device herein.
  • Fig. 2a represents starting position with empty base plate 3.
  • Fig. 2b shows the first cut blank 41.
  • Fig. 2c shows a stack of cut blanks accumulated on slide plate 31 and on the base plate.
  • Fig. 2d shows the removal of the base plate with stack of cut blanks.
  • Fig. 2e shows the stack on the base plate after being removed from the slide plate.
  • Fig. 2f shows the automatic stacking device after removal of the base plate carrying the stack of cut blanks.
  • the feeding table, Fig. 1, 1 is equipped with a system that positions the advancing forward edge of the shaped film in such a way into the cutting device that the cut will produce a blank of the desired size.
  • Feeding wheel 12 propels a set length of film along a guide 11 to the cutting device.
  • Pressure roller 13 presses the shaped film against the feeding wheel to thus prevent slippage which could alter the set angle for the blank.
  • a separate guide shall be used for each radius.
  • the cutting device 2 can be represented by any type of ⁇ tting mechanism which is generally known to be suitable for the automatic cutting of plastic films.
  • the cutting mechanism generally comprises a stationary bed knife and a knife, for example a guillotine knife, or preferably a rotating knife, which runs along the bed knife to thus perform a scissors cut.
  • a stationary bed knife 21 conbined with a traversing rotating knife 22.
  • the position, particularly the rotational orientation, of the cutting unit comprising the stationary bed knife and the counter- knife can be adjusted independently of and in relation to the feeding table by means of any suitable mechanism routinely available such as a vertical axis.
  • the angle between the bed knife and the center line of the feeding wheel is adjustable consequendy to allow a perpendicular cut for all radii.
  • the said angle is, for shaped films having a radius between 1 and 8 meters, from 0° to about 18°. Differendy expressed, the cutting angle is such that the cut is effected to yield a cut perpendicular to the edges of the contoured film.
  • the feeding wheel 12 is located as close as practical to the bed knife i.e. the exit border of the feeding table 1.
  • the blanks as they are cut from the contoured film are collected on base plate 3.
  • the contoured film is passed through the cutting device via the sliding plate 31 to the base plate until the selected length to be cut is reached.
  • the cut separates the blank from the contoured film.
  • the cut blanks are then superposed on the base plate.
  • the indexing table 33 is lowered in a manner synchronized to the operation of the cutting device.
  • the indexing increments substantially correspond to the thickness of the cut shaped films.
  • the increments can correspond to the thickness of one or more cut shaped blanks. It was found that (individual) indexing increments corresponding to two to ten times the thickness of the cut shaped blanks can be preferred.
  • the slide plate 31 serves to overcome the height difference between bed knife 21 and base plate 3.
  • the slide plate is permanendy attached to the indexing table 33.
  • the top of the indexing table is equipped with rollers 32 to thus facilitate the handling of the base plate, in particular the base plate onto which the cut blanks are stacked. While removing the base plate with the blanks, the small section of the blanks resting on the slide plate, follow the movement of the base plate to thus form a square stack of blanks after having left the slide plate.
  • a very preferred feeding table herein can be represented by the treatment table in accordance with copending European patent application EP-A-97870135.7 , filed Septenber 12, 1997.
  • the shaped films which can be handled by means of the automatic cutting and stackind device herein are preferably represented by plasticized polyvinyl butyral interlayer films. Such fims can be shaped by known manufacturing technics, most preferably in accordance with the dual umbrella shaper technology as described in EP-A-0.685.316.

Landscapes

  • Details Of Cutting Devices (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Pile Receivers (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

An automatic cutting and stacking device for arcuately shaped blanks is disclosed. The device contains a feeding table (1) followed by a cutting unit (2) and a stacking device. The cutting unit (2) is movable in relation to the feeding table (1) to thus allow a cutting perpendicular to the contour of the shaped film. The stacking unit comprises a slide plate (31) and a movable base plate (3) upon which the cut blanks are stacked. The height of the base plate (3) can be adjusted/lowered in relation to the accumulating thickness of the stacking height of the cut blanks. <IMAGE>

Description

AUTOMATIC CUTTING AND STACKING DEVICE FOR SHAPED BLANKS AND METHOD OF USE
This invention relates to an automatic cutting and stacking device for cut shaped blanks and method of use. The equipment is beneficially suitable for the manufacture and handling of cut shaped interlayer blanks. The equipment of this invention comprises: a feeding mechanism generally embodying a surface that feeds accurately a film under a set angle along a set arc into the cutting unit; a cutting unit that cuts the shaped film squarely accross its circular contours; and a stacking system that stacks, in a single planar movement, the blanks at their cut positions.
Cut shaped blanks are used in automobile windshields, in particular windshields having a tinted band along the upper side. To that effect, the originally straight web, of for example polyvinyl butyral interlayer, is stretched into a curved web that fits the shape of the windshield. The so curved web is subsequendy cut to produce the appropriate cut shaped blanks which can be used as interlayer between two sheets of glass for the manufacture of laminated windshields. The cutting and the stacking of such blanks is generally performed manually, chiefly because of the non-linear shape of the blanks in casu two (opposite) sides are circular whereas the (opposite) cut sides are generally straight but not parallel. The prior art, including industrial practice , relating to the manufacture of shaped blanks is well established and known to be economically marginal. Because of difficulties attached to the nonlinear shape of the blanks, the cutting and/ or stacking of the blanks is generally done, in total or partially, manually. Past efforts to automate the αitting and/or stacking operations of blanks have led to an equipment outiay whereby a series of individual machines were installed to subsequendy perform the: feeding operation; cutting operation; removal of the cut blanks; and the stacking of the cut blanks. Such known manufacturing arrangements are capital intensive, require large amounts of clean room, floor space and operator's assistance and are, inherendy, subject to substantial model change-over difficulties.
It is therefore a first object of this invention to make available equipment capable of automatically cutting arcuately shaped film and stacking of the cut blanks. It is another object of this invention to provide equipment capable of continously and automatically, substantially non-manually, cutting and stacking circularly contoured cut-shaped blanks. It is still another object of this invention to generate a method for the continuous manufacture and automatic stacking of cut shaped blanks. The foregoing and other objects of this invention can now be met by means of a machine comprising: a feeding table; a cutting device; and an indexing table. The invention herein thus relates to an automatic cutting and stacking device for arcuately shaped blanks comprising:
(a) a feeding table capable of feeding a set length of arcuately shaped film to a cutting device;
(b) a device that cuts the shaped film into blanks; and
(c) a stacking device comprising an indexing table with an attached slide plate and a base plate.
The feeding mechanism is, in a preferred embodiment, operated by means of a feeding wheel 12 which propels a set length of film to the cutting device. The cutting device 2 can be represented by a stationary bed knife 21 combined with a traversing rotating knife 22. The angle between the bed knife and the centerline of the feeding wheel shall be adjustable to thus achieve perpendicular cuts for any selected radius. Indexing table 33, provided with base plate 3, is lowered, in a manner synchronized to the operation of the cutting device, by increments substantially corresponding to the thickness of the cut shaped blanks. The base plate supporting the formed stack of cut blanks can be rolled of the indexing table and thus serve for whatever application and/ or treatment can be in order.
In describing the invention, reference will be made to the accompanying drawings wherein: Fig. 1 is a plan view representing the automatic cutting and stacking device in accordance with the invention herein;
Fig. 2a; 2b; 2c; 2d; 2e; and 2f represent sectional views of the invention with respect to the operational sequence of the cutting and stacking device herein. Fig. 2a represents starting position with empty base plate 3. Fig. 2b shows the first cut blank 41. Fig. 2c shows a stack of cut blanks accumulated on slide plate 31 and on the base plate. Fig. 2d shows the removal of the base plate with stack of cut blanks. Fig. 2e shows the stack on the base plate after being removed from the slide plate. Fig. 2f shows the automatic stacking device after removal of the base plate carrying the stack of cut blanks.
The invention is described and explained under particular reference to the drawings. The feeding table, Fig. 1, 1 is equipped with a system that positions the advancing forward edge of the shaped film in such a way into the cutting device that the cut will produce a blank of the desired size. Feeding wheel 12 propels a set length of film along a guide 11 to the cutting device. Pressure roller 13 presses the shaped film against the feeding wheel to thus prevent slippage which could alter the set angle for the blank. A separate guide shall be used for each radius. The cutting device 2 can be represented by any type of ααtting mechanism which is generally known to be suitable for the automatic cutting of plastic films. The cutting mechanism generally comprises a stationary bed knife and a knife, for example a guillotine knife, or preferably a rotating knife, which runs along the bed knife to thus perform a scissors cut. In a preferred execution, one can use a stationary bed knife 21 conbined with a traversing rotating knife 22. The position, particularly the rotational orientation, of the cutting unit comprising the stationary bed knife and the counter- knife can be adjusted independently of and in relation to the feeding table by means of any suitable mechanism routinely available such as a vertical axis. The angle between the bed knife and the center line of the feeding wheel is adjustable consequendy to allow a perpendicular cut for all radii. In a preferred adjustment of the cutting unit, the said angle is, for shaped films having a radius between 1 and 8 meters, from 0° to about 18°. Differendy expressed, the cutting angle is such that the cut is effected to yield a cut perpendicular to the edges of the contoured film. The feeding wheel 12 is located as close as practical to the bed knife i.e. the exit border of the feeding table 1.
The blanks as they are cut from the contoured film are collected on base plate 3. In more detail, the contoured film is passed through the cutting device via the sliding plate 31 to the base plate until the selected length to be cut is reached. The cut separates the blank from the contoured film. The cut blanks are then superposed on the base plate. To control the height of the cut blanks to avoid obstruction to oncoming blanks, the indexing table 33 is lowered in a manner synchronized to the operation of the cutting device. The indexing increments substantially correspond to the thickness of the cut shaped films. The increments can correspond to the thickness of one or more cut shaped blanks. It was found that (individual) indexing increments corresponding to two to ten times the thickness of the cut shaped blanks can be preferred.
The slide plate 31 serves to overcome the height difference between bed knife 21 and base plate 3. The slide plate is permanendy attached to the indexing table 33. The top of the indexing table is equipped with rollers 32 to thus facilitate the handling of the base plate, in particular the base plate onto which the cut blanks are stacked. While removing the base plate with the blanks, the small section of the blanks resting on the slide plate, follow the movement of the base plate to thus form a square stack of blanks after having left the slide plate.
The base plate carrying the stack of cut blanks is now ready for use on the laminating line or whatever application may be in order. A very preferred feeding table herein can be represented by the treatment table in accordance with copending European patent application EP-A-97870135.7 , filed Septenber 12, 1997. The shaped films which can be handled by means of the automatic cutting and stackind device herein are preferably represented by plasticized polyvinyl butyral interlayer films. Such fims can be shaped by known manufacturing technics, most preferably in accordance with the dual umbrella shaper technology as described in EP-A-0.685.316.

Claims

1. Automatic cutting and stacking device for arcuately shaped blanks comprising:
(a) a feeding table capable of feeding a set length of arcuately shaped film to a cutting device;
(b) a device that cuts the shaped film into blanks; and
(c) a stacking device comprising an indexing table with an attached slide plate and a base plate.
2. The device in accordance with claim 1 wherein the feeding table 1 is provided with a feeding wheel 12 and a pressure roller 13 and the cutting unit 2 comprises a stationary bed knife 21 combined with a traversing rotating knife 22.
3. The device in accordance with claim 2 wherein the feeding table is, in addition, provided with a guide 11.
4. The device in accordance with claim 2 wherein the cutting unit 2 is independentiy adjustable in relation to the feeding table over a domain represented by an angle from 0┬░ to 18┬░.
5. The device in accordance with claim 1 wherein the indexing table can be lowered in synchronization to the cutting operation by indexing increments corresponding to two to ten times of a cut shaped blank.
6. Use of the automatic cutting and stacking device in accordance with any one of claims 1 through 5 for the manufacture of cut shaped blanks from a shaped plasti zed polyvinyl butyral film.
EP98948927A 1997-09-23 1998-09-08 Automatic cutting and stacking device for shaped blanks and method of use Expired - Lifetime EP1017607B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP98948927A EP1017607B1 (en) 1997-09-23 1998-09-08 Automatic cutting and stacking device for shaped blanks and method of use

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP97870144A EP0905073A1 (en) 1997-09-23 1997-09-23 Automatic cutting and stacking device for shaped blanks and method of use
EP97870144 1997-09-23
EP98948927A EP1017607B1 (en) 1997-09-23 1998-09-08 Automatic cutting and stacking device for shaped blanks and method of use
PCT/EP1998/005678 WO1999015451A1 (en) 1997-09-23 1998-09-08 Automatic cutting and stacking device for shaped blanks and method of use

Publications (2)

Publication Number Publication Date
EP1017607A1 true EP1017607A1 (en) 2000-07-12
EP1017607B1 EP1017607B1 (en) 2003-03-26

Family

ID=8231043

Family Applications (2)

Application Number Title Priority Date Filing Date
EP97870144A Withdrawn EP0905073A1 (en) 1997-09-23 1997-09-23 Automatic cutting and stacking device for shaped blanks and method of use
EP98948927A Expired - Lifetime EP1017607B1 (en) 1997-09-23 1998-09-08 Automatic cutting and stacking device for shaped blanks and method of use

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP97870144A Withdrawn EP0905073A1 (en) 1997-09-23 1997-09-23 Automatic cutting and stacking device for shaped blanks and method of use

Country Status (11)

Country Link
EP (2) EP0905073A1 (en)
JP (1) JP2001517593A (en)
KR (1) KR100566782B1 (en)
CN (1) CN1079363C (en)
AT (1) ATE235415T1 (en)
AU (1) AU732555B2 (en)
BR (1) BR9812379A (en)
DE (1) DE69812660T2 (en)
DK (1) DK1017607T3 (en)
ES (1) ES2193560T3 (en)
WO (1) WO1999015451A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA920319A (en) * 1969-11-28 1973-02-06 Ford Motor Company Of Canada Method of expanding a pliable material
US4554713A (en) * 1982-09-07 1985-11-26 Ppg Industries, Inc. Apparatus for differentially stretching, aligning and cutting sheet material
US5137673A (en) * 1987-11-17 1992-08-11 Monsanto Company Process for forming plasticized polyvinyl butyral sheet
DE19537173C1 (en) * 1995-10-06 1996-12-19 Voith Sulzer Papiermasch Gmbh Insertion strip cutter for paper length

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9915451A1 *

Also Published As

Publication number Publication date
CN1270566A (en) 2000-10-18
CN1079363C (en) 2002-02-20
AU9537598A (en) 1999-04-12
WO1999015451A1 (en) 1999-04-01
EP1017607B1 (en) 2003-03-26
DK1017607T3 (en) 2003-06-23
AU732555B2 (en) 2001-04-26
KR100566782B1 (en) 2006-04-03
BR9812379A (en) 2000-09-12
JP2001517593A (en) 2001-10-09
DE69812660D1 (en) 2003-04-30
ES2193560T3 (en) 2003-11-01
KR20010023857A (en) 2001-03-26
ATE235415T1 (en) 2003-04-15
DE69812660T2 (en) 2004-02-05
EP0905073A1 (en) 1999-03-31

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