WO2005105634A1 - Reel support unit for laminator - Google Patents

Reel support unit for laminator Download PDF

Info

Publication number
WO2005105634A1
WO2005105634A1 PCT/EP2005/051948 EP2005051948W WO2005105634A1 WO 2005105634 A1 WO2005105634 A1 WO 2005105634A1 EP 2005051948 W EP2005051948 W EP 2005051948W WO 2005105634 A1 WO2005105634 A1 WO 2005105634A1
Authority
WO
WIPO (PCT)
Prior art keywords
support unit
arms
reel
unit according
machine
Prior art date
Application number
PCT/EP2005/051948
Other languages
French (fr)
Inventor
Paolo Casagrande
Valter Pezzoni
Original Assignee
Schiavi S.P.A.
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 Schiavi S.P.A. filed Critical Schiavi S.P.A.
Publication of WO2005105634A1 publication Critical patent/WO2005105634A1/en

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
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/02—Supporting web roll
    • B65H16/06—Supporting web roll both-ends type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/50—Driving mechanisms
    • B65H2403/52—Translation screw-thread mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
    • B65H2511/10—Size; Dimensions
    • B65H2511/12—Width

Definitions

  • the present invention relates to machines for laminating films, webs and reelable sheet material in general, and in particular relates to a support unit for the reels of material mounted on the said machines.
  • the various layers of material are joined together by so-called laminating machines in which the backing layer of material is covered with an adhesive, either with or without a solvent, and is then laminated to another layer of material in film form.
  • the second layer of material may be a printed film.
  • a laminating machine therefore comprises two unwinding stations from which are respectively unwound the reel of backing material and the reel of material which is applied to it, a station where the adhesive is deposited on the backing material, a drying tunnel of given length in which the adhesive is heated and/or the solvent applied to it is stripped off to make the lamination effective, a laminating station in which the two layers are essentially calendered together, and a winding station where the laminated product is wound onto the receiving reel.
  • the unwinding stations and the winding station each have a unit for supporting their various reels.
  • the reel support units must be able to accommodate reels of different sizes. For this reason the units do not have a shaft to be inserted into the reel core because it would have to be replaced or its size adjusted whenever webs of different widths were used.
  • these support units comprise two cantilever arms fitted at their free ends with expansion heads able to rotate with respect to the said arms and engage firmly in the core of the reel to be supported. Both arms can travel along a crossmember.
  • the web unwinding axis must be as nearly as possible coincident with the machine's longitudinal axis of symmetry, in order that all stages in the joining process are carried out with the greatest possible accuracy, one of the two support arms is fitted with actuating means controlled by an encoder, or other similar means, which position it on the crossmember when the relevant details are entered by the operator. The other arm is then opposed to it and the expansion heads thus clamp the core of the reel.
  • the subject of the present invention is therefore a reel support unit for laminators, comprising two cantilever arms which can travel along a crossmember which is arranged at right angles to the longitudinal central axis of the machine and essentially parallel to the plane on which the machine stands, the free ends of the said arms being fitted with means for engaging and clamping the core of the said reel, these means being able to rotate relative to the said arms; both arms are fitted with mutually synchronized actuating means by which they can be moved in mutually opposite directions along the said crossmember, symmetrically about the longitudinal central axis of the machine, from and towards this axis.
  • the said actuating means of the arms comprise two half screws, threaded in opposite directions, which engage with bush means integral with the said arms.
  • the said half screws are connected to a gearmotor located essentially on the axis along which the material travels through the machine.
  • At least one of the reel core engagement means is coupled to rotary actuation means; the clamping means are preferably actuated by fluid-mechanical or pneumatic power, and comprise a plurality of inserts, mounted on the said reel core engagement means, capable of projecting radially outwards in response to a pressure pulse from the fluid.
  • the means for supplying the fluid under pressure to the hubs are controlled by the central control unit (CPU).
  • Figure 1 is a diagrammatic side elevation of a laminator
  • Figure 2 is a partial plan view from above of a reel support unit according to the present invention.
  • Figure 1 illustrates a laminator.
  • Reference 1 denotes the supporting frame of the said machine, to which the arms 2 that form the support unit according to the invention for the reels 10, 20 and 30 are connected.
  • the casing 40 which contains the film drying tunnel 401 with its outlet manifold 431 and outlet nozzles 441.
  • the fan 41 Positioned on the casing is the fan 41 which supplies the air to the inside of the manifold 431 of the said tunnel 401.
  • the backing film is unwound from the reel 10 on the train of rollers 101 , fed to the station 301 where the adhesive is deposited, and here passes along the roller track 411 which is located inside the said drying tunnel 401 on the support frame 421.
  • the film taken from the reel 20 by the train of rollers 501 is coupled to that emerging from the casing 40 on the train of rollers 601 and gathered onto the reel 30.
  • the motors 202 turning the reels.
  • FIG. 2 illustrates the support unit according to the present invention.
  • the reel 10 is shown with its core 11 fitted on the heads 132 of the hubs 102, which are mounted rotatably on the arms 2.
  • the heads 132 are fitted with radial pins 112 that clamp the core 11 , activated by the fluid that is fed by the inlets 122.
  • One of the two hubs is provided with a motor 202 for turning the reel 10.
  • Each arm is mounted in cantilever-fashion on a carriage 302 which is capable of moving along a guide 211 integral with a crossmember 201 of the machine by means of the slide 312 connected to the said carriage 302 and coupled to the said guide 211.
  • the carriage 302 is provided with a cavity 332 housing a bush 322 that engages with a half screw 113 passing out of the gearbox 103 of the motor 3 located on the crossmember 201.
  • the two half screws 113 are integral with each other and threaded in opposite directions.
  • a hole 342 In the end of each cavity 332 is a hole 342 for the respective half screw 113 to pass through.
  • each reel is positioned between the arms 2 of the respective support unit, which are open.
  • the reels used in this type of laminator can vary in width, and the support units must be able to accommodate webs with widths varying from about 1500 mm to about 650 mm, without prejudice to the necessity of positioning the film symmetrically with respect to the central axis of its unwinding path, so as to ensure the maximum precision in the work which is to be done upon it.
  • the action of the motor 3 turns the half screws 113 and so moves the carriages 302 carrying the arms 2 towards each other in an equal and opposite movement due to the opposite threads.
  • the heads 132 of the hubs 102 are inserted into the ends of the core 11 of the reel 10.
  • the radial pistons 112 projecting from the heads 132 can be actuated to clamp the reel 10 on the said hubs.
  • the reel is unloaded simply by re-opening the arms 2 in the outward direction, in other words by reversing the rotation of the two half screws 113. It does not matter whether the support unit is mounted in the unwinding stations of the webs that are to be laminated together, or in the station where the laminated web is wound up.
  • the coupling between the half screws 113 and the respective bushes 322 can be achieved by a screw nut system of conventional type, and more preferably is a screw nut system using interposed balls, of a type known per se, which ensures a low value of f rictional losses.
  • the reel support unit as conceived here ensures precise alignment of the web in the laminator without having to enter the data about the length of the core of the reel.
  • the means employed are found to be much simpler, as are the operations that have to be conducted when loading and unloading the reels.

Abstract

Reel support unit for laminator of film and/or continuous web materials, comprising two cantilever arms (2) which can travel, by means of suitable guide means (302, 312, 211), along a crossmember (201) which is arranged at right angles to the longitudinal central axis of the machine, the free ends of the said arms (2) being fitted with means for engaging (102, 132) and clamping (112) the core (11) of the said reel (10), these means being able to rotate relative to the said arms (2), which unit is characterized in that both arms (2) are fitted with mutually synchronized actuating means (113, 103, 3, 322) by which they can be moved in mutually opposite directions along the said crossmember, symmetrically about the longitudinal central axis of the machine, from and towards this axis.

Description

TITLE: "Reel support unit for laminator"
DESCRIPTION
Background and summary of the invention
The present invention relates to machines for laminating films, webs and reelable sheet material in general, and in particular relates to a support unit for the reels of material mounted on the said machines.
Numerous industrial processes use materials in the form of films or continuous webs composed of a plurality of layers of dissimilar materials. The various layers of material are joined together by so-called laminating machines in which the backing layer of material is covered with an adhesive, either with or without a solvent, and is then laminated to another layer of material in film form. In the particular field of industrial packaging, the second layer of material may be a printed film.
A laminating machine therefore comprises two unwinding stations from which are respectively unwound the reel of backing material and the reel of material which is applied to it, a station where the adhesive is deposited on the backing material, a drying tunnel of given length in which the adhesive is heated and/or the solvent applied to it is stripped off to make the lamination effective, a laminating station in which the two layers are essentially calendered together, and a winding station where the laminated product is wound onto the receiving reel. The unwinding stations and the winding station each have a unit for supporting their various reels.
Given the fact that the materials which can be joined together have a web width which can vary greatly, the reel support units must be able to accommodate reels of different sizes. For this reason the units do not have a shaft to be inserted into the reel core because it would have to be replaced or its size adjusted whenever webs of different widths were used.
At present, these support units comprise two cantilever arms fitted at their free ends with expansion heads able to rotate with respect to the said arms and engage firmly in the core of the reel to be supported. Both arms can travel along a crossmember. Given the fact that, independently of the width of the film web being used, the web unwinding axis must be as nearly as possible coincident with the machine's longitudinal axis of symmetry, in order that all stages in the joining process are carried out with the greatest possible accuracy, one of the two support arms is fitted with actuating means controlled by an encoder, or other similar means, which position it on the crossmember when the relevant details are entered by the operator. The other arm is then opposed to it and the expansion heads thus clamp the core of the reel.
However, there are a number of drawbacks to this type of solution: specifically, to ensure a certain degree of precision in the positioning of the reels, the width of each core that may be used on the machine must be known exactly. Moreover, much of the precision of the positioning is in any case influenced by the efficiency of the arrangement of the unmotorized support arm and by the stability of its clamping with respect to the position adopted by the other arm. It should also be stressed, however, that the operation always requires either long machine setting-up sessions, to store a large number of different reel measurements in the machine's control unit, or rather slow preparatory operations for each type of reel loaded.
It is an object of the present invention to provide a reel support unit for a laminator that will overcome the problems described above and enable precise positioning with extremely simple operations. This type of positioning should preferably require no knowledge of the exact dimensions of the different reels that may be used in the machine.
The subject of the present invention is therefore a reel support unit for laminators, comprising two cantilever arms which can travel along a crossmember which is arranged at right angles to the longitudinal central axis of the machine and essentially parallel to the plane on which the machine stands, the free ends of the said arms being fitted with means for engaging and clamping the core of the said reel, these means being able to rotate relative to the said arms; both arms are fitted with mutually synchronized actuating means by which they can be moved in mutually opposite directions along the said crossmember, symmetrically about the longitudinal central axis of the machine, from and towards this axis.
In a preferred embodiment the said actuating means of the arms comprise two half screws, threaded in opposite directions, which engage with bush means integral with the said arms. The said half screws are connected to a gearmotor located essentially on the axis along which the material travels through the machine.
At least one of the reel core engagement means is coupled to rotary actuation means; the clamping means are preferably actuated by fluid-mechanical or pneumatic power, and comprise a plurality of inserts, mounted on the said reel core engagement means, capable of projecting radially outwards in response to a pressure pulse from the fluid. Advantageously, the means for supplying the fluid under pressure to the hubs are controlled by the central control unit (CPU).
Brief description of the drawings
Other advantages and features of the device according to the present invention will become clear in the course of the following description of an embodiment thereof, provided by way of non-restrictive example with reference to the appended sheets of drawings, in which:
Figure 1 is a diagrammatic side elevation of a laminator; and
Figure 2 is a partial plan view from above of a reel support unit according to the present invention.
Description of the preferred embodiments of the invention
Figure 1 illustrates a laminator. Reference 1 denotes the supporting frame of the said machine, to which the arms 2 that form the support unit according to the invention for the reels 10, 20 and 30 are connected. On top of the frame is the casing 40 which contains the film drying tunnel 401 with its outlet manifold 431 and outlet nozzles 441. Positioned on the casing is the fan 41 which supplies the air to the inside of the manifold 431 of the said tunnel 401. The backing film is unwound from the reel 10 on the train of rollers 101 , fed to the station 301 where the adhesive is deposited, and here passes along the roller track 411 which is located inside the said drying tunnel 401 on the support frame 421. Next, the film taken from the reel 20 by the train of rollers 501 is coupled to that emerging from the casing 40 on the train of rollers 601 and gathered onto the reel 30. On the arms 2 are the motors 202 turning the reels.
Figure 2 illustrates the support unit according to the present invention. The reel 10 is shown with its core 11 fitted on the heads 132 of the hubs 102, which are mounted rotatably on the arms 2. The heads 132 are fitted with radial pins 112 that clamp the core 11 , activated by the fluid that is fed by the inlets 122. One of the two hubs is provided with a motor 202 for turning the reel 10. Each arm is mounted in cantilever-fashion on a carriage 302 which is capable of moving along a guide 211 integral with a crossmember 201 of the machine by means of the slide 312 connected to the said carriage 302 and coupled to the said guide 211. The carriage 302 is provided with a cavity 332 housing a bush 322 that engages with a half screw 113 passing out of the gearbox 103 of the motor 3 located on the crossmember 201. The two half screws 113 are integral with each other and threaded in opposite directions. In the end of each cavity 332 is a hole 342 for the respective half screw 113 to pass through.
The way in which the support unit according to the present invention operates will now be explained. At the moment when the reels are loaded onto the laminator, each reel is positioned between the arms 2 of the respective support unit, which are open. Generally speaking, the reels used in this type of laminator can vary in width, and the support units must be able to accommodate webs with widths varying from about 1500 mm to about 650 mm, without prejudice to the necessity of positioning the film symmetrically with respect to the central axis of its unwinding path, so as to ensure the maximum precision in the work which is to be done upon it. The action of the motor 3 turns the half screws 113 and so moves the carriages 302 carrying the arms 2 towards each other in an equal and opposite movement due to the opposite threads. In this way the heads 132 of the hubs 102 are inserted into the ends of the core 11 of the reel 10. Next, when the reel is firmly positioned between the arms 2, the radial pistons 112 projecting from the heads 132 can be actuated to clamp the reel 10 on the said hubs. Once the reel of a given film is exhausted, the reel is unloaded simply by re-opening the arms 2 in the outward direction, in other words by reversing the rotation of the two half screws 113. It does not matter whether the support unit is mounted in the unwinding stations of the webs that are to be laminated together, or in the station where the laminated web is wound up.
The coupling between the half screws 113 and the respective bushes 322 can be achieved by a screw nut system of conventional type, and more preferably is a screw nut system using interposed balls, of a type known per se, which ensures a low value of f rictional losses.
The reel support unit as conceived here ensures precise alignment of the web in the laminator without having to enter the data about the length of the core of the reel. The means employed are found to be much simpler, as are the operations that have to be conducted when loading and unloading the reels.

Claims

1. Reel support unit for laminator of film and/or continuous web materials, comprising two cantilever arms (2) which can travel, by means of suitable guide means (302, 312, 211), along a crossmember (201) which is arranged at right angles to the longitudinal central axis of the machine and essentially parallel to the plane on which the machine stands, the free ends of the said arms (2) being fitted with means for engaging ( 02, 132) and clamping (112) the core (11 ) of the said reel (10), these means being able to rotate relative to the said arms (2), which unit is characterized in that both arms (2) are fitted with mutually synchronized actuating means (113, 103, 3, 322) by which they can be moved in mutually opposite directions along the said crossmember, symmetrically about the longitudinal central axis of the machine, from and towards this axis.
2. Support unit according to Claim 1 , in which the actuating means of the said arms (2) comprise two half screws (113) which engage with bush means (322) integral with the said arms (2), and which are connected to a drive member (3, 103) located on the said crossmember (201).
3. Support unit according to Claim 2, in which the said drive member (3, 103) is located essentially on the longitudinal central axis of the machine.
4. Support unit according to Claim 2 or 3, in which the said half screws (113) are integral with each other and are threaded in opposite directions to each other.
5. Support unit according to any one of Claims 2 to 4, in which the screw/nut coupling between the two half screws (113) and the said bushes (322) is of the interposed-ball type.
6. Support unit according to any one of the preceding Claims 1 to 5, in which at least one of the reel (10) core (11) engagement means (102, 132) is coupled to rotary actuation means (202).
7. Support unit according to any one of the preceding Claims 1 to 6, in which the said clamping means comprise a plurality of inserts (112) capable of projecting radially outwards and able to move on the said reel (10) core (11) engagement means (132).
8. Support unit according to Claim 7, in which the said clamping means (112) are actuated by fluid, preferably pneumatic power.
9. Support unit according to Claim 8, in which the said clamping means (112) are all controlled by a single central control unit (CPU).
PCT/EP2005/051948 2004-05-05 2005-04-28 Reel support unit for laminator WO2005105634A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITGE2004A000034 2004-05-05
IT000034A ITGE20040034A1 (en) 2004-05-05 2004-05-05 COIL SUPPORT GROUP FOR COUPLING MACHINES.

Publications (1)

Publication Number Publication Date
WO2005105634A1 true WO2005105634A1 (en) 2005-11-10

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Family Applications (1)

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PCT/EP2005/051948 WO2005105634A1 (en) 2004-05-05 2005-04-28 Reel support unit for laminator

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WO (1) WO2005105634A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106081704A (en) * 2016-06-21 2016-11-09 胡承平 A kind of plastic film winding device being easily installed replacing
CN106477360A (en) * 2016-11-30 2017-03-08 桐乡市凯瑞包装材料有限公司 A kind of scalable thin-film unreeling mechanism
CN108688356A (en) * 2017-04-06 2018-10-23 精工爱普生株式会社 Printing equipment
CN108706365A (en) * 2018-03-28 2018-10-26 河南省新斗彩印刷有限公司 Suspension type base paper roll stand
CN109132639A (en) * 2018-09-29 2019-01-04 侯马市迪科特电子科技有限公司 A kind of convenient wrap-up of wallpaper

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650536A (en) * 1982-02-10 1987-03-17 Morton Thiokol S.P.A. Machine for applying a portion of photosensitive film to at least one face of a flat plate having a surface area greater than said portion
US4858911A (en) * 1985-10-22 1989-08-22 Somar Corporation Apparatus for conveying base
DE3911250C1 (en) * 1989-04-07 1990-05-17 Lemo M. Lehmacher & Sohn Gmbh, 5216 Niederkassel, De Winding apparatus for foil webs
US5279699A (en) * 1990-05-22 1994-01-18 Somar Corporation Sticking apparatus
WO2000015529A1 (en) * 1998-09-11 2000-03-23 Roberto Graffagnino Apparatus for collecting, distributing and storing flexible laminar elements, in particular industrial hides

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650536A (en) * 1982-02-10 1987-03-17 Morton Thiokol S.P.A. Machine for applying a portion of photosensitive film to at least one face of a flat plate having a surface area greater than said portion
US4858911A (en) * 1985-10-22 1989-08-22 Somar Corporation Apparatus for conveying base
DE3911250C1 (en) * 1989-04-07 1990-05-17 Lemo M. Lehmacher & Sohn Gmbh, 5216 Niederkassel, De Winding apparatus for foil webs
US5279699A (en) * 1990-05-22 1994-01-18 Somar Corporation Sticking apparatus
WO2000015529A1 (en) * 1998-09-11 2000-03-23 Roberto Graffagnino Apparatus for collecting, distributing and storing flexible laminar elements, in particular industrial hides

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106081704A (en) * 2016-06-21 2016-11-09 胡承平 A kind of plastic film winding device being easily installed replacing
CN106477360A (en) * 2016-11-30 2017-03-08 桐乡市凯瑞包装材料有限公司 A kind of scalable thin-film unreeling mechanism
CN108688356A (en) * 2017-04-06 2018-10-23 精工爱普生株式会社 Printing equipment
CN108688356B (en) * 2017-04-06 2022-03-25 精工爱普生株式会社 Printing device
CN108706365A (en) * 2018-03-28 2018-10-26 河南省新斗彩印刷有限公司 Suspension type base paper roll stand
CN109132639A (en) * 2018-09-29 2019-01-04 侯马市迪科特电子科技有限公司 A kind of convenient wrap-up of wallpaper

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