EP3919422A1 - Système d'enroulement de feuille et composite d'une installation d'étirage de feuille et d'un tel système d'enroulement de feuille - Google Patents

Système d'enroulement de feuille et composite d'une installation d'étirage de feuille et d'un tel système d'enroulement de feuille Download PDF

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Publication number
EP3919422A1
EP3919422A1 EP21175099.7A EP21175099A EP3919422A1 EP 3919422 A1 EP3919422 A1 EP 3919422A1 EP 21175099 A EP21175099 A EP 21175099A EP 3919422 A1 EP3919422 A1 EP 3919422A1
Authority
EP
European Patent Office
Prior art keywords
film
roller
film web
designed
contact roller
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
EP21175099.7A
Other languages
German (de)
English (en)
Other versions
EP3919422C0 (fr
EP3919422B1 (fr
Inventor
Helmut Gumpinger
Xaver Schwarz
Jens Adler
Anthimos Giapoulis
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.)
Brueckner Maschinenbau GmbH and Co KG
Original Assignee
Brueckner Maschinenbau GmbH and Co KG
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
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Publication of EP3919422A1 publication Critical patent/EP3919422A1/fr
Application granted granted Critical
Publication of EP3919422C0 publication Critical patent/EP3919422C0/fr
Publication of EP3919422B1 publication Critical patent/EP3919422B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/044—Sensing web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/26—Mechanisms for controlling contact pressure on winding-web package, e.g. for regulating the quantity of air between web layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding 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
    • B65H18/00—Winding webs
    • B65H18/08—Web-winding mechanisms
    • B65H18/14—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web
    • B65H18/16—Mechanisms in which power is applied to web roll, e.g. to effect continuous advancement of web by friction roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2207—Changing the web roll in winding mechanisms or in connection with winding operations the web roll being driven by a winding mechanism of the centre or core drive type
    • B65H19/2215—Turret-type with two roll supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/443—Moving, forwarding, guiding material by acting on surface of handled material
    • B65H2301/4432—Moving, forwarding, guiding material by acting on surface of handled material by means having an operating surface contacting only one face of the material, e.g. roller
    • B65H2301/44324—Rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/513—Modifying electric properties
    • B65H2301/5133—Removing electrostatic charge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/15—Roller assembly, particular roller arrangement
    • B65H2404/152—Arrangement of roller on a movable frame
    • B65H2404/1522—Arrangement of roller on a movable frame moving linearly in feeding direction
    • 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
    • B65H2511/20—Location in space
    • B65H2511/21—Angle
    • 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
    • B65H2511/20—Location in space
    • B65H2511/23—Coordinates, e.g. three dimensional coordinates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/17—Nature of material
    • B65H2701/175—Plastic
    • B65H2701/1752—Polymer film

Definitions

  • the invention relates to a film winding system and a composite of a film stretching system with such a film winding system.
  • Film stretching systems are used to produce a film web from a plastic melt which has certain material properties in order to be able to be used for certain purposes.
  • the film stretching systems include stretching stages in the longitudinal direction and / or in the transverse direction.
  • the line speed is increasing more and more and is now more than 400 m / min. Even faster film stretching systems are to be put into operation in the future.
  • an important aspect is how the finished starting product, namely the film web, is wound up.
  • film winding systems are provided that wind up the produced film web. When winding, however, it is important that no creases are pressed into the film web and that enough air is still wrapped in so that the individual layers can later be separated from one another more easily.
  • the film web is wound up at a winding station.
  • the film web becomes an internally known winding station, however fed via a contact roller to ensure optimal alignment before winding.
  • the film web covers the contact roller over 90 ° or over 0 °.
  • a degree of wrap of 0 °
  • the film web runs between the contact roller and the film bale (also called the bale of the film) into the bale of film.
  • the film web is deflected by 90 ° on the contact roller before it runs into the bale of film.
  • the film winding system comprises a film entry area via which a film web to be wound can be fed to the film winding system.
  • a first winding station is also provided. In a winding position, the first winding station is designed to wind the film web into a bale of film.
  • a contact roller and a measuring roller are also provided. The contact roller is arranged (immediately) adjacent to the first winding station (when this is in the winding position) and is designed to guide the film web to the first winding station.
  • the wording "directly" is to be understood to mean that the contact roller is in contact with the bale of film or that only the web of film that is wound onto the bale of film runs between the contact roller and the bale of film.
  • a spacing space could also be formed between the contact roller and the bale of film.
  • This spacing space that is to say spacing, is preferably less than 100 cm, 80 cm, 70 cm, 60 cm, 50 cm, 40 cm cm, 30 cm, 20 cm, 10 cm, 5 cm, 3 cm, 2 cm, 1 cm or smaller than 0.5 cm.
  • the measuring roller is arranged in front of the contact roller in the direction of movement of the film web and is designed to guide the film web to the contact roller.
  • the wording "in the direction of movement of the film web" is to be understood to mean that a certain area of the film web first runs over the measuring roller and only afterwards over the contact roller.
  • a first adjusting device is provided and designed to move the measuring roller in relation to the contact roller along a travel path in such a way that a degree of wrap over which the film web covers the contact roller can be changed.
  • a "degree of wrap” is to be understood as a value of how far the film web covers the contact roller.
  • the contact roller extends over 360 °. With a degree of wrap of 90 °, the film web would only rest on a quarter of the lateral surface of the, in particular, cylindrical contact roller. In contrast, with a degree of wrap of 180 °, the film web would rest on half of the lateral surface of the, in particular, cylindrical contact roller.
  • the degree of wrap can be changed. This is achieved in that the film web is first passed over a measuring roller and only forwarded from the measuring roller to the contact roller.
  • the degree of wrap can be changed because the area of impact of the film web on the contact roller can be adjusted.
  • the degree of wrap can therefore be adapted individually to the needs of the film web.
  • the degree of wrap can therefore be optimally adjusted to the properties of the film, such as the material thickness, the material strength, the material expansion or the shrinkage. For each material, therefore, an optimum can be set in terms of the degree of wrap to achieve the best bale of film.
  • the contact roller can only have a minor influence on the film tension.
  • the first adjustment device is designed to move the measuring roller with respect to the contact roller along the travel path during operation, i.e. while the film web is being wound, in order to change the degree of wrap during operation. In this way, it is possible to react immediately to changing parameters of the film web. For example, it is possible that the film web to be produced changes very quickly, which means that different degrees of wrap are required. Loosening screw connections and converting parts of the system is then not necessary and would not be expedient.
  • the first adjustment device is designed in particular to move the measuring roller in a stepless manner with respect to the contact roller. A method in discrete steps (for example, using notch steps) would also be conceivable.
  • the first adjustment device is designed to move the measuring roller along the entire travel path or along the major part of the travel path with a first movement vector and / or a second movement vector.
  • the first adjustment device comprises a first guide system.
  • the movement with the first movement vector can take place via the first guidance system.
  • the first adjustment device also comprises a second guide system.
  • the movement with the second movement vector can take place via the second guidance system.
  • the first or second guide system can be, for example, a slide system or a rail system.
  • the measuring roller itself can be attached to the first guide system or the second guide system.
  • the measuring roller it would be possible for the measuring roller to be moved with the first motion vector via the first guide system and at the same time with the second motion vector via the second guide system.
  • this is optional.
  • the measuring roller could only be moved with the first movement vector or only with the second movement vector. The movement of the measuring roller in order to change the degree of wrap is always relative to the contact roller.
  • the first movement vector comprises only one component in the X direction. This component is not equal to zero.
  • the other components (Y direction, Z direction) are zero.
  • the X direction runs parallel to the floor in the direction of the film entry area.
  • the Y direction runs in the longitudinal direction of the contact roller or the measuring roller.
  • the Z direction is perpendicular to the floor and away from the floor.
  • the second motion vector includes components in the X direction and in the Z direction that are not equal to zero.
  • the component in the Y direction is zero. This means that the measuring roller only moves horizontally when moving with the first movement vector. When moving with the second motion vector, the measuring roller would move obliquely.
  • the measuring roller When the measuring roller moves with the second movement vector, it can be moved further in the Z direction than in the X direction over the entire travel path. It would also be possible for the measuring roller to be moved further in the X direction than in the Z direction. In principle, the measuring roller could also be moved the same distance in the Z direction as in the X direction over the entire travel path (45 ° course). When the measuring roller moves with the second movement vector, the ratio between the component in the X direction and the component in the Z direction would preferably be constant over most of the travel path or over the entire travel path.
  • the second motion vector preferably forms an angle with an XY plane which is greater than 10 °, 20 °, 30 °, 40 °, 50 °, 60 ° or which is greater than 70 °, but which is more preferably smaller than 80 °, 75 °, 65 °, 55 °, 45 °, 35 °, 25 ° or which is smaller than 15 °.
  • the travel path of the measuring roller could also run in an arc.
  • the travel path of the measuring roller comprises several arcuate segments that are connected to one another directly or by linearly extending sections.
  • the first adjustment device is particularly preferably designed to position the measuring roller between a first position and a second position in order to thereby set the degree of wrap.
  • the measuring roller In the first position, the measuring roller is only spaced apart from the contact roller in the vertical direction (above or below). As a result, the film web runs between the measuring roller and the contact roller almost exclusively with a vertical component. As a result, a degree of wrap of approximately 0 ° can be set on the contact roller.
  • the second position the measuring roller is only spaced apart from the contact roller in the horizontal direction (in the film pull-off direction between the film entry area and the contact roller). As a result, the film web runs between the measuring roller and the contact roller almost exclusively with a horizontal component. As a result, a degree of wrap of 90 ° can be set on the contact roller. Positions of the measuring roller between this first and this second position result in a degree of wrap between 0 ° and 90 °.
  • a control device is also provided.
  • the control device is designed to control the first adjustment device in such a way that it moves the measuring roller in such a way that a predetermined setpoint value for the degree of wrap is achieved.
  • This setpoint value can be loaded by the control device, for example from a data memory, or received from an input unit (for example a keyboard). It would also be possible that the Control device calculates the setpoint.
  • the control device could be designed to load at least one material property of the film web, such as the film type, the material thickness, the material strength, the material expansion, the shrinkage and / or the film temperature from a data memory or from an input unit (e.g. keyboard ) to recieve.
  • the control device could then calculate the setpoint value for the degree of wrap from this at least one material property. Additionally or alternatively, the control device could be designed to load at least one system parameter of the film stretching system such as the system speed and / or the film tension from a data memory or to receive it from an input unit. Depending on this at least one system parameter, the control device could calculate the setpoint value for the degree of wrap. Depending on the setpoint, the measuring roller can then be moved accordingly. Certain positions of the measuring roller can be stored in a lookup table together with certain degrees of wrap. A corresponding formula could also be stored (for example an equation) from which the control device can calculate the corresponding position of the measuring roller as a function of the target value.
  • a force measuring device is preferably also provided and arranged on the measuring roller.
  • the force measuring device is then designed to measure an actual value for a film tension and to transmit it to the control device.
  • the control device is in turn designed to compare the actual value for the film tension with a target value for the film tension. Depending on this comparison, the control device is designed to increase, reduce or maintain the degree of wrap. For example, this prevents thin foils from tearing.
  • a deflection roller and a second adjusting device are also provided.
  • the deflection roller is arranged between the film entry area and the measuring roller.
  • the second adjustment device is designed to move the deflecting roller in the vertical direction in such a way that the film web is between the deflecting roller and the measuring roller or between the deflecting roller and the contact roller can be aligned approximately (less than 5 ° deviation) horizontally.
  • the deflection roller achieves the same conditions on the measuring roller, so that a force measuring device used there delivers measurement results that can be compared with one another even with different degrees of wrap.
  • a first and / or a second stabilizing roller are preferably also provided and can be arranged on a first edge region of the film web.
  • the first stabilization roller can be brought into contact with an upper side of the film web and the second stabilization roller with an underside of the film web.
  • the first and the second stabilizing rollers are preferably only spaced apart from one another in the vertical direction and are thus arranged directly one above the other so that they support one another.
  • a third and / or a fourth stabilizing roller are also provided, which are arranged like the first and the second stabilizing roller.
  • the third and fourth stabilizing rollers can, however, be arranged on a second edge area opposite to the first edge area.
  • the first edge region could be a right edge region of the film web and the second edge region could be a left edge region of the film web.
  • An "edge area” is to be understood as the area of the film web which is spaced from the respective side edge preferably by less than 50 cm, 40 cm, 30 cm, 20 cm or by less than 10 cm. Instead of a stabilizing roll, it is also possible to speak of a spreader.
  • a third adjustment device to which the contact roller is attached is also preferably provided.
  • the third adjustment device is designed to move the contact roller in the direction of the film entry area. This ensures that a distance between the contact roller and the increasingly thicker bale of film is constant or that the contact roller is always in contact with the bale of film with a defined contact pressure.
  • the third adjustment device moves the contact roller preferably around a motion vector which preferably has only one component in the X direction.
  • the measuring roller is preferred when the contact roller moves with the same movement vector as the contact roller proceedings. This ensures that the degree of wrap can also be kept constant during operation if necessary.
  • the film winding system also comprises at least one unloading device.
  • This is arranged in the area of the film web and designed to reduce an electrical charge on the film web or the bale of film. Such an electrical charge can otherwise be life-threatening for the operating personnel.
  • the unloading device preferably comprises a multiplicity of flexible / freely movable electrically conductive metal strips (a type of lametta strip) which can be brought into contact with the film web. These metal strips are preferably arranged distributed over the entire width of the film web or over the predominant width of the film web.
  • a discharge conductor e.g. rod-shaped
  • This or these discharge conductors would preferably be arranged at a distance from the film web.
  • the distance should preferably be less than 30 mm, 20 mm, 10 mm or less than 5 mm. However, the distance is preferably greater than 4 mm or 5 mm.
  • An alternating electric field is applied to this discharge conductor. This alternating electric field is a high voltage, which dissipates the static charge.
  • the combination of the film winding system and a film stretching system according to the invention allows the film winding system to be connected to an exit area of the film stretching system.
  • the film stretching system includes an entrance area to which a film or plastic melt can be fed.
  • the film stretching system comprises various zones in which the plastic film is heated and stretched to form a mono-axially or biaxially oriented film web (for example via a longitudinal stretching stage and / or via a transverse stretching stage or oven). The resulting film web is then fed to the film winding system.
  • Figure 1 shows a composite 100 of a film winding system 1 according to the invention and a film stretching system 110.
  • the film stretching system 110 can be designed as a longitudinal stretching system or transverse stretching system or sequential stretching system with a longitudinal stretching stage and a transverse stretching stage or as a simultaneous stretching system.
  • the film stretching system 110 is used to produce a plastic film web 2, which is also referred to below as film web 2.
  • the film stretching system 110 is divided into different zones 110a, 110b, 110c, 110d and 110e. Of course, not all of these zones 110a, 110b, 110c, 110d and 110e actually have to be present. In the various zones 110a to 110e, the film web 2 is exposed to different temperatures in order to generate or set certain film properties.
  • the first zone 110a is also referred to as the preheating zone.
  • the second zone 110b is referred to as the stretching zone, whereas the third zone 110c is referred to as the further heating zone.
  • the fourth zone 110d is also referred to as the neutral zone and the fifth zone 110e as the cooling zone.
  • even fewer or more neutral zones can be located between the individual zones 110a to 110e to ensure a separation of the zones 110a to 110e, so that the individual zones 110a to 110e influence one another less strongly (the air flows from one zone 110a to 110e into the other).
  • film stretching machine 110 it is possible to produce film webs with a width that is greater than 2 m, 3 m, 4 m, 5 m, 6 m, 7 m, 8 m, 9 m, 10 m, 11 m, 12 m, 13 m or larger than 15 m, but which is preferably smaller than 17 m, 16 m, 15 m, 14 m, 13 m, 12 m, 11 m, 10 m, 9 m, 8 m, 7 m, 6 m, 5 m, 4 m or less than 3 m.
  • the film stretching system 110 comprises an entrance area 111, with a film to be stretched being able to be fed to the film stretching system 110 at its entrance area 111. At the end of the film stretching system 110, that is to say at its exit area 112, the stretched film web 2 emerges.
  • the exit area 112 of the film stretching system 110 is connected to a film entry area 3 of the film winding system 1 according to the invention.
  • the Figures 2A and 2B show an embodiment which describes a film winding system 1 very generally.
  • the film web 2 is fed to the film winding system 1 by the film stretching system. This takes place via the film entry area 3.
  • the film web 2 then runs in the direction of a first winding station 4, which is located in the Figures 2A and 2B is in a winding position.
  • the first winding station 4 is designed to wind the film web 2 into a bale of film 5.
  • the film web 2 is fed to the first winding station 4 via a 0 ° loop.
  • the film web 2 is fed to the first winding station 4 via a 90 ° loop.
  • a contact roller 6 is provided for this purpose.
  • the film web 2 is fed vertically to the contact roller 6 and the film web 2 rests in the space between the contact roller 6 and the first winding station 4 and is immediately wound up to form the film bale 5.
  • a possible deflection of the contact roller 6 has a smaller influence on the film web 2 with a degree of wrap of 0 ° than with a degree of wrap of 90 °. With smaller degrees of wrap, the air inclusion can be kept constant despite the slightly uneven running of the film web 2 or uniform conditions can be created on the film roll 5 because the film web 2 initially runs onto the contact roller 6.
  • Thinner film webs 2 are more affected by fluttering, which is why the degree of wrap should be selected to be greater in order to calm the film web 2. In contrast, thicker film webs 2 should be guided over the contact roller 6 with a smaller degree of wrap in order to avoid wrinkling.
  • a corresponding dynamic setting of the degree of wrap is described in the following figures.
  • the first winding station 4 comprises a base body 4a.
  • the main body 4a of the first winding station 4 can be set in a rotational movement. This can be done, for example, via an (electric) motor.
  • the base body 4a it can be in the simplest case be a (hollow) cylindrical piece of cardboard.
  • the base body 4a can, however, also be made of metal.
  • a second winding station 7 is also shown.
  • the second winding station 7 also comprises a base body 7a. This base body 7a can also be set in a rotational movement.
  • the film web 2 can thus also be wound around the base body 7 a of the second winding station 7.
  • the first winding station 4 has been moved into the winding position.
  • the first winding station 4 In the winding position, the first winding station 4 is arranged adjacent to the contact roller 6.
  • the second winding station 7, on the other hand, has been moved or pivoted into an unloading position.
  • the bale of film 5 can be removed from the respective, in this case the second, winding station 7.
  • Figure 2A is indicated by arrows that the first winding station 4 can be moved or pivoted from the winding position into the unloading position.
  • the second winding station 7 can likewise be moved or pivoted from the unloading position (after the bale of film 5 has been removed) into the winding position.
  • the movement from the winding position into the unloading position and back into the winding position is preferably circular or approximated to a circular movement.
  • the movement could also include different, preferably arcuate segments which adjoin one another or are connected to one another by straight sections.
  • a cutting device (not shown) is also provided. The cutting device is designed to cut through the film web 2 along its entire width when the first or second winding station 4, 7 is pivoted in the direction of the unloading position, the respective other winding station 7, 4 then being designed to extend this far into the To be pivoted winding position, so that the respective base body 4a, 7a immediately comes into contact with the now resulting cut new beginning of the film web 2 and winds this new beginning on the base body 4a, 7a already set in rotation.
  • the cutting device preferably moves obliquely (in the X direction and Y direction) in order to introduce a straight cut into the film web 2 due to the movement speed of the film web 2.
  • the cutting device could, however, also move in a straight line (only in the Y direction), in which case the film web 2 would then be cut off at an angle.
  • FIG 3A is shown how a degree of wrap of 0 ° is realized.
  • a contact roller 6 and a measuring roller 8 are provided.
  • the contact roller 6 is in particular arranged directly (less than 10 cm, 8 cm, 6 cm, 4 cm, 2 cm, 1 cm) adjacent to the first winding station 4, which in this case is in the winding position.
  • the contact roller 6 preferably touches the first winding station 4. If several winding stations 4, 7 are used, this naturally applies to that winding station 4, 7 which is in the winding position.
  • the contact roller 6 is designed to guide the film web 2 to the respective, in this case to the first winding station 4.
  • the measuring roller 8 is arranged in front of the contact roller 6 in the direction of movement of the film web 2 and serves to guide the film web 2 to the contact roller 6.
  • a first adjustment device 10 is also provided and designed to move the measuring roller 8 relative to the contact roller 6 along a travel path such that a desired degree of wrap, by which the film web 2 covers the contact roller 6, can be set or changed.
  • the diameter of the contact roller 6 and the measuring roller 8 are different. They could also be the same.
  • the film web 2 runs between the measuring roller 8 and the contact roller 6, preferably with only one component in the vertical direction (perpendicular to the floor).
  • the measuring roller 8 is located in Figure 3A in a first position. To set a degree of wrap of 0 °, the measuring roller 8 only needs to be arranged at a distance from the contact roller 6 in the vertical direction (Z direction).
  • the measuring roller 8 must be offset from the contact roller 6 in such a way that both the contact roller 6 and the measuring roller 8 merely touch one (same) plane (YZ plane), this plane runs perpendicular to the ground.
  • the film web 2 accordingly runs through this plane.
  • a distance between the measuring roller 8 and the contact roller 6 is less than 3 m, 2.5 m, 2 m, 1.5 m or less than 1 m, in particular with a degree of wrap of 0 °.
  • the contact roller 6 and the measuring roller 8 rotate in the same direction.
  • the contact roller 6 and the base body 4a, 7a of the respective winding station 4, 7 in the winding position rotate in different directions.
  • both the contact roller 6 and the measuring roller 8 could be tempered.
  • Such a temperature control (cooling or heating) could be achieved by a corresponding fluid (air, liquid).
  • the distance between the measuring roller 8 and the contact roller 6 can be constant over the entire travel path of the measuring roller 8. However, the distance preferably changes. The distance can be smaller as well as larger over the entire travel path.
  • the first adjusting device 10 is designed to move the measuring roller 8 with respect to the contact roller 6 even while the film web 2 is being wound up. This allows the degree of wrap to be changed during operation.
  • the movement of the measuring roller 8 with respect to the contact roller 6 takes place in particular continuously. It could also be done in discrete steps.
  • the method takes place, for example, pneumatically, electrically, hydraulically and / or mechanically.
  • the first adjustment device 10 is also designed to move the measuring roller 8 along the entire travel path or along the major part of the travel path with a first movement vector and / or with a second movement vector.
  • the first adjustment device 10 comprises a first guide system 11 for this purpose, the first guide system 11 being movable with the first movement vector.
  • the second guidance system 12 is movable with the second motion vector.
  • the first and / or second guide system 11, 12 can be, for example, a slide, rail and / or chain system.
  • the measuring roller 8 is attached to the second guide system 12, whereas the second guide system 12 is attached to the first guide system 11.
  • Both guide systems 11, 12 can preferably be controlled independently of one another. It would also be possible for the measuring roller 8 to be fastened to the first guide system 11, the first guide system 11 in turn being able to be fastened to the second guide system 12. If the first guide system 11 is attached to the second guide system 12, then a movement of the second guide system 12 always leads to a movement of the first guide system 11, whereas a movement of the first guide system 11 does not lead to a movement of the second guide system 12. The opposite applies in the event that the second guide system 12 is attached to the first guide system 11.
  • the first motion vector comprises only one component in the X direction, the X direction running parallel to the floor in the direction of the film entry region 3.
  • the component in the X direction is greater than zero, whereas all other components are zero.
  • the second motion vector includes a component in the X direction and a component in the Z direction.
  • the component in the Z direction runs perpendicularly away from the floor (upwards) and is perpendicular to the component in the X direction.
  • a component in the Y direction is zero. The component in the Y direction would otherwise run parallel to the axis of rotation or longitudinal axis of the contact roller 6 or the measuring roller 8.
  • the measuring roller 8 can be moved obliquely via the second guide system 12.
  • the second motion vector preferably forms an angle of 45 ° with an XY plane.
  • the angle could also be larger be than 10 °, 20 °, 30 °, 40 °, 50 °, 60 ° or greater than 70 °.
  • the angle is preferably smaller than 80 °, 75 °, 65 °, 55 °, 45 °, 35 °, 25 ° or smaller than 15 °.
  • the travel path of the measuring roller 8 could also run in an arc. This would apply in particular to the second guide system 12.
  • the travel path of the measuring roller 8 could also comprise several arcuate segments which are connected to one another directly or by linearly extending sections.
  • Figure 3A it is shown that the measuring roller 8 has been moved into the first position in order to set a degree of wrap of 0 °. In this position, the measuring roller 8 is only spaced apart from the contact roller 6 in the vertical direction. In this exemplary embodiment, the measuring roller 8 is arranged below the contact roller 6. However, it could also be arranged above the contact roller 6. It is thereby achieved that the film web 2 is moved between the measuring roller 8 and the contact roller 6 almost exclusively with a vertical component.
  • a deflection roller 15 and a second adjusting device 16 are also provided.
  • the second adjusting device 16 is preferably a slide, rail and / or chain system.
  • the drive is again preferably pneumatically, electrically, hydraulically and / or mechanically.
  • the deflection roller 15 is arranged between the film entry area 3 and the measuring roller 8.
  • the second adjustment device 16 is designed to move the deflection roller 15 in the vertical direction (Z-direction) in such a way that the film web 2 between the deflection roller 15 and the measuring roller 8 or between the deflection roller 15 and the contact roller 6 is approximately (less than 5 ° deviation) is aligned horizontally.
  • the deflection roller 15 could also be temperature-controllable (for example heated and / or cooled).
  • the deflection roller 15 is also moved with a component in the Z direction.
  • the diameter of the deflecting roller 15 can correspond to the diameter of the contact roller 6 or the diameter of the measuring roller 8 or differ from these diameters.
  • the deflecting roller 15 could additionally also be adjusted in the horizontal direction (X direction).
  • the deflection roller 15 could therefore be moved with a motion vector which includes both a component in the X direction and a component in the Y direction. In the simplest case, the deflecting roller 15 would be moved along a straight line, that is to say at an angle.
  • the travel path of the deflecting roller 15 could also comprise a plurality of segments running in an arc, which are connected to one another directly or by at least one linear section.
  • the travel path of the deflecting roller 15 to correspond to the travel path of the measuring roller 8. More preferably, both the deflecting roller 15 and the measuring roller 8 would complete the same sequence of movements at the same time.
  • first and second stabilizing rollers 20, 21 are also provided and arranged on a first edge region of the film web.
  • the first stabilization roller 20 can be brought into contact with an upper side of the film web 2.
  • the second stabilization roller 21, on the other hand, can be brought into contact with an underside of the film web 2.
  • the first and second stabilizing rollers 20, 21 are only spaced apart from one another in the vertical direction and are arranged directly one above the other.
  • the third and fourth stabilizing rollers are preferably arranged offset from the first and second stabilizing rollers 20, 21, respectively, in the Y direction.
  • the stabilizing rollers 20, 21 are preferably arranged between the deflection roller 15 and the measuring roller 8.
  • the stabilizing rollers 20, 21 are preferably arranged closer to the measuring roller 8 or the contact roller 6 than to the deflecting roller 15.
  • a third adjustment device 25 is preferably also provided.
  • the third adjustment device 25 is again preferably a slide, rail and / or chain system.
  • the third adjustment device 25 can also be driven pneumatically, electrically, hydraulically and / or mechanically.
  • the contact roller 6 is attached to the third adjustment device 25.
  • the third adjustment device 25 is designed to move the contact roller 6 in the X direction. This ensures that the distance between the contact roller 6 and the film roll 5, which is getting thicker and thicker, remains constant.
  • the respective first or second winding station 4, 5, which is currently in the winding position could be moved in the X direction via an adjusting device so that the distance from the outermost position of the film roll 5 to the contact roller 6 remains constant.
  • a control device 30 is also provided. For the sake of clarity, this is only available in Figure 3A shown. It can of course also be provided in all other figures.
  • the control device 30 is designed to control the first adjustment device 10 in such a way that it moves the measuring roller 8 in such a way that a predetermined setpoint value for the degree of wrap is achieved.
  • the control device 30 could also be used to control the second and / or the third adjustment device 16, 25.
  • the control device 30 can select a specific position for the measuring roller 8 in order to then move the measuring roller 8 up to this position.
  • the relationships between the nominal value and the position of the measuring roller 8 can be stored in a look-up table, for example.
  • the position to be set for the measuring roller 8 can also be corrected by the current position of the contact roller 6 (which can be moved along the X direction as a function of the thickness of the film roll 5).
  • the position of the measuring roller 8 to be set can also be calculated using a system of equations.
  • the parameters of this system of equations are at least the setpoint value for the degree of wrap and optionally also the position of the contact roller 6.
  • the control device 30 then sets the position of the measuring roller 8 by controlling the first and / or second guide system 11, 12.
  • the target value can be loaded from a data memory (not shown) or received in writing or from an input unit (e.g. computer, tablet computer, external control unit and / or mobile radio device).
  • the control device 30 would also be able to determine the setpoint value on the basis of at least one material property of the film web. These material properties include, for example, the type of film, the material thickness, the material strength, the material expansion, the shrinkage and / or the film temperature. It would also be possible for the control device 30 to determine the setpoint value from a system parameter of the film stretching system 110. These system parameters include, for example, the system speed and the film tension.
  • a force measuring device (not shown) is preferably also provided, which is arranged on the measuring roller 8.
  • the force measuring device 8 is designed to measure a current value (actual value) for the film tension and to transmit it to the control device 30. Using this actual value, the control device 30 can control the first adjustment device 10 in such a way that the degree of wrap is increased, reduced or maintained. This prevents the film web 2 from entering.
  • FIG. 3B a degree of wrap of 22.5 ° is now shown. This was achieved in that the measuring roller 8 was moved with a first movement vector (for example exclusively) along the X direction. The measuring roller 8 was moved closer in the direction of the film entry area 3. However, it would also be possible for the measuring roller 8 to be moved with a second motion vector which includes both a component in the X direction and a component in the Z direction.
  • a first movement vector for example exclusively
  • the measuring roller 8 was moved closer in the direction of the film entry area 3.
  • a second motion vector which includes both a component in the X direction and a component in the Z direction.
  • FIG 3C a degree of wrap of 45 ° is shown. This is achieved in that the measuring roller 8 has a second motion vector along the X direction and moved along the Z direction. In this connection, the deflection roller 15 was also moved in its vertical position by the second adjusting device 16. As a result, the film web 2 is still aligned horizontally between the deflection roller 15 and the measuring roller 8.
  • the measuring roller 8 could additionally or alternatively also be moved with the first movement vector or exclusively with the first movement vector (in the X direction) in order to be able to set the degree of wrap of 45 °.
  • FIG 3D a degree of wrap of 67.5 ° is shown. This is achieved in that the measuring roller 8 was still moved with a second movement vector along the X direction and along the Z direction. In this connection, the deflection roller 15 was also moved in its vertical position by the second adjusting device 16. As a result, the film web 2 is still aligned horizontally between the deflection roller 15 and the measuring roller 8. In principle, the measuring roller 8 could also be moved with the first movement vector or exclusively with the first movement vector (in the X direction).
  • the first and second stabilizing rollers 20, 21, like the third and fourth stabilizing rollers, are preferably adjustable in their position (in particular vertically) via the first adjusting device 10.
  • the stabilizing rollers 20, 21 are preferably coupled to the second guide system 12. If the measuring roller 8 is adjusted with the second movement vector (X direction and Z direction), then the stabilizing rollers 20, 21 are preferably also changed, at least in their vertical position.
  • FIG 3E a degree of wrap of 90 ° is shown. This is achieved in that the measuring roller 8 was still moved with a second movement vector along the X direction and along the Z direction. In this connection, the deflection roller 15 was also moved in its vertical position by the second adjusting device 16. As a result, the film web 2 is still aligned horizontally between the deflection roller 15 and the contact roller 6.
  • the measuring roller 8 could additionally also with the first motion vector or exclusively with the first motion vector (in the X direction) are moved. In this exemplary embodiment, the measuring roller 8 is out of contact with the film web 2. However, this need not be the case.
  • the measuring roller 8 is only spaced apart from the contact roller 6 in the horizontal direction.
  • the control device 30 Via the control device 30, the measuring roller 8 can preferably be switched between the first position ( Figure 3A ) and the second position ( Figure 3E ) are proceeded.
  • the stabilizing rollers 20, 21 are preferably arranged closer to the contact roller 6 with a higher degree of wrap than with a lower degree of wrap.
  • the first, second and / or third adjustment device 10, 16, 25 preferably also include a braking and / or locking device, which ensures that the respective adjustment device 10, 16, 25 remains permanently in position (even in the event of a power failure of the respective Adjusting device 10, 16, 25) until the braking and / or locking device is released again.
  • the film web 2 it would also be possible for the film web 2 to run completely above the contact roller 6.
  • the measuring roller 8 and the deflecting roller 15 would be arranged in mirror image.
  • FIG 4 yet another embodiment of the film winding system 1 is shown.
  • At least one unloading device 40, 41, 42 is shown here.
  • This discharge device 40, 41, 42 is arranged in the region of the film web 2 and is designed to reduce an electrical charge on the film web 2 or on the film roll 5.
  • An unloading device 40 can for example be arranged between the deflecting roller 15 and the measuring roller 8.
  • This unloading device 40 can be arranged above and / or below the film web 2.
  • an unloading device 41 can also be arranged in the area of the measuring roller 8 or between the measuring roller 8 and the contact roller 6.
  • an unloading device 42 can also be arranged directly on the film roll 5 after the contact roller 6.
  • the unloading device 40, 41, 42 can be a multiplicity of flexible, electrically conductive metal strips (for example a type of lametta strip) which can be brought into contact with the film web 2. These preferably extend over the entire width of the film web 2 (in the Y direction). Additionally or alternatively, the at least one discharge device 40, 41, 42 can be a discharge conductor which is arranged at a distance from the film web 2 (the at least one discharge conductor is arranged without contact with the film web 2) and via an alternating electrical field (High voltage: more than 500 V, 1000 V, 2000 V, 3000 V, 4000 V, 5000 V, 6000 V, 7000 V, 8000 V, 9000 V or more than 10000 V). The distance between the at least one discharge conductor and the film web is adjustable and, in particular, can be changed continuously or in discrete steps (for example automatically) during operation. The distance can be adjusted depending on the type of film and / or tension, for example.
  • the diameter of the contact roller 6 is variable.
  • a flexible contact roller can be used.
  • a cambered contact roller 6 can also be used.
  • Such a cambered contact roller 6 is, for example, from DE 10 2009 048 074 A1 known, the content of which is included with respect to the cambered contact roller 6 by reference.
  • the contact roller 6, the measuring roller 8 and the deflecting roller 15 preferably extend over the entire width of the film web 2 (and possibly beyond).
  • the stabilizing rollers 20, 21 extend only over the respective edge area of the film web 2 or a part thereof.
  • control units which are arranged between the deflection roller 15 and the measuring roller 8 or between the measuring roller 8 and the contact roller 6 or between the contact roller 6 and the corresponding winding station 4, 7 in the winding position and further film properties (for Example film thickness, film temperature, crack formation) and forward these film properties to the control device 30 so that the control device 30 corrects the degree of wrap on the basis of the other film properties.
  • additional control units can be optical cameras and / or IR sensors, for example.
  • the measuring roller 8 and / or the deflection roller 15 and / or the contact roller 6 could be driven via a common drive device.
  • the synchronization could take place, for example, via corresponding gears and / or chains or belts.
  • the measuring roller 8 and / or the deflecting roller 15 and / or the contact roller 6 are each driven via a separate drive device.

Landscapes

  • Winding Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
EP21175099.7A 2020-06-05 2021-05-20 Système d'enroulement de feuille et composite d'une installation d'étirage de feuille et d'un tel système d'enroulement de feuille Active EP3919422B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020115007.5A DE102020115007A1 (de) 2020-06-05 2020-06-05 Folienwickelsystem und Verbund aus einer Folienreckanlage und einem solchen Folienwickelsystem

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EP3919422A1 true EP3919422A1 (fr) 2021-12-08
EP3919422C0 EP3919422C0 (fr) 2023-10-18
EP3919422B1 EP3919422B1 (fr) 2023-10-18

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US (1) US11891257B2 (fr)
EP (1) EP3919422B1 (fr)
JP (1) JP2021193054A (fr)
KR (1) KR20210151702A (fr)
CN (1) CN113753641A (fr)
DE (1) DE102020115007A1 (fr)
HU (1) HUE064804T2 (fr)
MX (1) MX2021006639A (fr)
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CN115231021B (zh) * 2022-07-18 2024-01-30 南通新江海动力电子有限公司 薄膜电容器用卷膜机
US11816893B1 (en) 2022-08-03 2023-11-14 Industrial Video Solutions Inc. Systems and methods for monitoring and controlling industrial processes
US11932991B2 (en) * 2022-08-03 2024-03-19 Industrial Video Solutions Inc. Systems and methods for monitoring and controlling industrial processes

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US5397514A (en) * 1990-10-25 1995-03-14 Bruckner Maschinenbau Gernot Bruckner Gmbh & Co. Kg Process for producing flat and annular-cross-section extrudates and device for implementing the process
JPH09315632A (ja) * 1996-05-29 1997-12-09 Diafoil Co Ltd フイルムの卷取り方法
EP1232982A2 (fr) * 2001-02-14 2002-08-21 Fuji Tekko Co., Ltd Tambour de contact
EP1640300A2 (fr) * 2000-08-07 2006-03-29 Windmöller & Hölscher KG Dispositif pour l'enroulement d'une bande de matériau en continu
DE102009005355A1 (de) * 2008-01-18 2009-07-23 Metso Paper, Inc. Verfahren beim Aufrollen einer Faserbahn und ein Aufroller
DE102009048074A1 (de) 2009-10-01 2011-04-07 Brückner Maschinenbau GmbH & Co. KG Reckwalze sowie zugehöriges Längsreckwerk oder -stufe
US20140299705A1 (en) * 2011-11-21 2014-10-09 Swiss Winding Inventing Ag Winder for an endless material web

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DE1216521B (de) 1961-09-01 1966-05-12 Dornier Gmbh Lindauer Vorrichtung zum biaxialen Recken von Filmen, Folien oder dergleichen Bahnen aus thermo-plastischem Kunststoff
DE2935743A1 (de) * 1979-09-05 1981-03-26 Zanders Feinpapiere AG, 51465 Bergisch Gladbach Zusatzvorrichtung an aufrolleinrichtungen und verfahren zum aufrollen von druckempfindlichen materialbahnen
US4798350A (en) * 1987-05-29 1989-01-17 Magna-Graphics Corporation Web rewind apparatus with cutless web transfer

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Publication number Priority date Publication date Assignee Title
US5397514A (en) * 1990-10-25 1995-03-14 Bruckner Maschinenbau Gernot Bruckner Gmbh & Co. Kg Process for producing flat and annular-cross-section extrudates and device for implementing the process
JPH09315632A (ja) * 1996-05-29 1997-12-09 Diafoil Co Ltd フイルムの卷取り方法
EP1640300A2 (fr) * 2000-08-07 2006-03-29 Windmöller & Hölscher KG Dispositif pour l'enroulement d'une bande de matériau en continu
EP1232982A2 (fr) * 2001-02-14 2002-08-21 Fuji Tekko Co., Ltd Tambour de contact
DE102009005355A1 (de) * 2008-01-18 2009-07-23 Metso Paper, Inc. Verfahren beim Aufrollen einer Faserbahn und ein Aufroller
DE102009048074A1 (de) 2009-10-01 2011-04-07 Brückner Maschinenbau GmbH & Co. KG Reckwalze sowie zugehöriges Längsreckwerk oder -stufe
US20140299705A1 (en) * 2011-11-21 2014-10-09 Swiss Winding Inventing Ag Winder for an endless material web

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JP2021193054A (ja) 2021-12-23
PL3919422T3 (pl) 2024-03-18
EP3919422C0 (fr) 2023-10-18
MX2021006639A (es) 2021-12-06
KR20210151702A (ko) 2021-12-14
CN113753641A (zh) 2021-12-07
EP3919422B1 (fr) 2023-10-18
US20210380364A1 (en) 2021-12-09
HUE064804T2 (hu) 2024-04-28
DE102020115007A1 (de) 2021-12-09
US11891257B2 (en) 2024-02-06

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