EP2636623B1 - Dispositif pour faire fonctionner un cylindre contacteur et procédé pour faire fonctionner un cylindre contacteur - Google Patents

Dispositif pour faire fonctionner un cylindre contacteur et procédé pour faire fonctionner un cylindre contacteur Download PDF

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Publication number
EP2636623B1
EP2636623B1 EP20120158593 EP12158593A EP2636623B1 EP 2636623 B1 EP2636623 B1 EP 2636623B1 EP 20120158593 EP20120158593 EP 20120158593 EP 12158593 A EP12158593 A EP 12158593A EP 2636623 B1 EP2636623 B1 EP 2636623B1
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EP
European Patent Office
Prior art keywords
roller
take
contact
contact roller
axis
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.)
Active
Application number
EP20120158593
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German (de)
English (en)
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EP2636623A1 (fr
Inventor
Hans-Jürgen KITTSTEINER
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.)
Andritz AG
Original Assignee
Andritz AG
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Filing date
Publication date
Application filed by Andritz AG filed Critical Andritz AG
Priority to EP20120158593 priority Critical patent/EP2636623B1/fr
Priority to CN201310072564.1A priority patent/CN103303717B/zh
Publication of EP2636623A1 publication Critical patent/EP2636623A1/fr
Application granted granted Critical
Publication of EP2636623B1 publication Critical patent/EP2636623B1/fr
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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
    • 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
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/30—Supports; Subassemblies; Mountings thereof
    • B65H2402/32—Sliding support means
    • 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
    • B65H2403/40—Toothed gearings
    • B65H2403/41—Rack-and-pinion, cogwheel in cog railway
    • 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
    • B65H2403/53—Articulated mechanisms
    • B65H2403/532—Crank-and-rocker mechanism
    • B65H2403/5321—Crank-and-rocker mechanism with oscillating crank, i.e. angular movement of crank inferior to 360
    • 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
    • B65H2404/40—Shafts, cylinders, drums, spindles
    • B65H2404/43—Rider roll construction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/524—Vibration
    • 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 present invention relates to a device for operating a contact roller in a plant for monoaxially or biaxially stretching polymer films.
  • the invention relates to a device allowing a variable positioning of a contact roller in relation to a polymer film take-up roller outer surface.
  • the invention relates to a process for operating a contact roller in a plant for biaxially stretching polymer films by using the device of the invention.
  • the invention relates to a process allowing a variable positioning of a contact roller in relation to a polymer film take-up roller outer surface.
  • the first step of an overall process of fabricating biaxially oriented films comprising polymer materials is an extrusion, through a die, of a film of a molten polymer onto a roll ("chill roll") the surface of which is kept at a temperature below the glass transition temperature of the respective polymer.
  • the roll surface quenches the polymer into an amorphous state.
  • a subsequent step of said process comprises steps of stretching the film previously generated by well-known methods in the longitudinal (machine) direction and/or in the transverse direction, the latter being a stretching step in a direction perpendicular to the machine direction, commonly. These stretching steps may be performed alone or may be performed one after the other or may be performed simultaneously. In the case of sequential stretching, the stretching process itself is carried out by two machine units, usually first in the longitudinal/ machine direction (i. e. in the direction of the travelling path of the polymer film on the stretching device) and then in the transverse direction.
  • a stretching action in the longitudinal (machine) direction and transverse direction needs the simultaneous application of stretching forces to the film material in two directions (usually perpendicular to each other), while the film is moving with high speed along a moving path of the film on a stretching device.
  • the drawn polymer film is "heat set” or crystallized under tension and with a temperature gradient starting at elevated temperatures and continuing to decreased temperatures.
  • the heat setting step prevents the film from shrinking back to its unstretched shape and locks the molecular orientation in the polymer film plane.
  • the orientation of the polymer molecule chains thus obtained is responsible for the high strength and stiffness of the oriented film.
  • the polymer film stretched monoaxially or biaxially is guided to a take-up roller to which the final polymer film is taken up for further processing or storage.
  • the diameter of the roll (or bale on the roller) continuously increases.
  • a contact roller is used. Said contact roller applies a steady pressure to the outermost polymer film layer taken up to the take-up roller (or bale of polymer film already taken up to the take-up roller).
  • the document EP-B 1 423 318 proposed a countercontrol for a linear motor drive driving the contact roller with the aim of maintaining an improved contact pressure during the entire process of taking up the polymer film to the take-up roller.
  • the contact pressure force i. e. in general the force produced by the linear motor, may change depending upon the vibration state in order to ensure the application of a contact pressure in a way as uniform as possible.
  • the arrangement causes an increase or decrease of the force on the movable part of the driving motor and, thus, on the line of contact between the contact roller and the take-up roller, or the bale which is wounded onto the take-up roller, preferably such that the relieve motion between the two rollers, compared to an uncorrected state, is minimized or even becomes zero (or at least tends to become zero) so that unwanted vibrations (relative vibrations or changes of the distance of the rollers) are prevented thereby.
  • a major disadvantage of using the linear motor for preventing vibrations or relative changes of the distance between the two rollers is that a linear motor (as used in the prior art EP-B 1 423 318 ), due to an arrangement of the stationary magnets along a linear (open loop) circuitry, tends to suffer from considerable cogging due to the finite number of magnetic poles, which cogging makes difficult, if not impossible, providing a continuous linear control of the pressure exerted by the contact roller towards the take-up roller, on the one hand, and effecting a damping effect in cases of vibrations and changes of the relative distance between the take-up and contact rollers in the course of the process of taking up the polymer film drawn, on the other hand.
  • the invention relates to a device for operating at least one contact roller in contact with a take-up roller or with a polymer film bale wound to the take-up roller, preferably in a plant for stretching a polymer film which is, after the stretching step, wound to said take-up roller rotatable around a rotational axis, said at least one contact roller being rotatable around a rotational axis arranged parallel to the take-up roller's rotational axis, being supported movably by variable distances perpendicular relative to the take-up roller's rotational axis and providing for a permanent application of a predetermined pressure to the polymer film during said winding to the take-up roller or polymer film bale along a contact line being on the surface of the contact roller and take-up roller or polymer film bale and parallel to the axes of the take-up and contact rollers, said device characterised by comprising
  • the invention also relates to a device for operating at least one contact roller in contact with a take-up roller or with a polymer film bale wound to the take-up roller, preferably in a plant for stretching a polymer film which is, after the stretching step, wound to said take-up roller rotatable around a rotational axis, said at least one contact roller being rotatable around a rotational axis arranged parallel to the take-up roller's rotational axis, being supported movably by variable distances perpendicular relative to the take-up roller's rotational axis and providing for a permanent application of a predetermined pressure to the polymer film during said winding to the take-up roller or polymer film bale along a contact line being on the surface of the contact roller and take-up roller or polymer film bale and parallel to the axes of the take-up and contact rollers, said device characterised by comprising
  • the invention further relates to a process for operating at least one contact roller in contact with a take-up roller or with a polymer film bale wound to the take-up roller, preferably in a plant for stretching a polymer film which is, after the stretching step, wound to said take-up roller rotatable around a rotational axis, said at least one contact roller being rotatable around a rotational axis arranged parallel to the take-up roller's rotational axis and being supported movably by variable distances perpendicular relative to the take-up roller's rotational axis, wherein a predetermined pressure is applied permanently to the polymer film by said contact roller during said winding to the take-up roller or polymer film bale along a contact line being on the surface of the contact roller and take-up roller or polymer film bale and parallel to the axes of the take-up and contact rollers, said process characterised by comprising
  • the invention also relates to a process for operating at least one contact roller in contact with a take-up roller or with a polymer film bale wound to the take-up roller, preferably in a plant for stretching a polymer film which is, after the stretching step, wound to said take-up roller rotatable around a rotational axis, said at least one contact roller being rotatable around a rotational axis arranged parallel to the take-up roller's rotational axis and being supported movably by variable distances perpendicular relative to the take-up roller's rotational axis, wherein a predetermined pressure is applied permanently to the polymer film by said contact roller during said winding to the take-up roller or polymer film bale along a contact line being on the surface of the contact roller and take-up roller or polymer film bale and parallel to the axes of the take-up and contact rollers, said process characterised by comprising
  • the device and process of the invention can provide the functions of
  • the at least one direct gearless-drive motor means is, in preferred embodiments of the invention, used as contact pressure element providing for an optimum contact pressure of the contact roller to the polymer film to be wound to the take-up roller (or to the bale of polymer film material already wound to the contact roller), as well as it is used as a damping means for the contact roller.
  • the direct gearless drive motor means employed in the present device due to an arrangement of the motor's stationary magnets along a closed loop circuitry allows a substantial reduction, if not even a disappearance, of the cogging phenomenon. As a consequence, a continuous linear control of the pressure exerted by the contact roller towards the take-up roller can be ensured.
  • a damping effect and a minimization, if not even a disappearance, of losses of contact between the take-up and contact rollers along their contact line can be achieved by the continuous linear control of the pressure exerted by the contact roller towards the take-up roller during the whole process of winding up the polymer drawn by the stretching device to the take-up roller.
  • Figure 1 shows one embodiment of the device of the present invention, wherein at least one linear guidance 30 is used, on which the motor means 10, via the intermediate force transmission means 20, moves the contact roller 1 towards (or away from) the take-up roller 0, wherein a rocker arm 21 is used as a force transmission means 20.
  • a rocker arm 21 is used as a force transmission means 20.
  • the take-up roller 0 is driven, by suitable separate motor means (not shown here), at a variable predetermined velocity.
  • the axis of the take-up roller 0 is usually supported to be stationary, e. g. is supported on a suitable stationary stand which may form part of the stretching device.
  • At least one contact roller 1 In contact with the take-up roller 0, or with the polymer material wound to said take-up roller 0, is at least one contact roller 1. There may be one contact roller, or there may be more than one (e. g. two or even three) contact roller(s) 1. In preferred embodiments of the invention, there is exactly one contact roller 1 in contact with the take-up roller 0 or with a bale 0' of polymer film material already wound to said take-up roller 0.
  • the contact roller 1 (or in cases where more than one contact roller 1 is used: the contact rollers 1, 1) may be mounted on a stand or base or frame or to a suspension in such a manner that the rotational axes of the take-up roller 0 and of the (preferably one and optionally more than one) contact roller 1 are substantially parallel to each other, and that the surface of the contact roller(s) 1 is in rotational contact to the surface of the (empty) take-up roller 0 or is in contact to the outermost polymer film layer already wound to the take-up roller 0 (if polymer film is already wound to the take-up roller 0).
  • the contact roller surface contacts the take-up roller surface (or the surface of the bale of polymer material already wound to the take-up roller 0) along a contact line which is also parallel to the rotational axes of the take-up and contact rollers 0, 1.
  • the contact roller 1 (e. g. mounted on a stand or base or frame or to a suspension) is movable, relative to the take-up roller 0, and variable distances of the contact roller 1, relative to the rotational axis of the take-up roller 0, may be adjusted including a distance between the contact roller 1 and the take-up roller 0 where the surfaces of the contact and take-up rollers 1, 0 (or the surface of the contact roller 1 and the surface of the outermost polymer film layer wound to the take-up roller 0) are in contact along a contact line parallel to the rotational axes of the contact and take-up rollers 1, 0.
  • the take-up roller 0 is empty, and the surfaces of the take-up roller 0 and of the contact roller 1 are in direct contact. With a continuing take-up process, the diameter of the bale 0' of polymer film material already wound to the take-up roller 0 increases.
  • the arriving polymer film 2 is pressed to the surface of the empty take-up roller 0 (or, if already some polymer film 2 was wound to the take-up roller 0, to the surface of the polymer film bale 0' already wound to the take-up roller 0) by means of the contact roller 1 at a predetermined pressure.
  • the axis of the contact roller 1 is adjustable to match to the take-up roller diameter increasing in the course of the take-up (or winding) process.
  • the contact roller 1 (or in case that more than one contact roller is employed: the contact rollers 1) is/are supported movably by variable distances relative to the take-up roller's rotational axis.
  • movable arrangements are guidances, e. g.
  • the contact roller 1 is mounted to at least one linear guidance (e. g. the at least one linear guidance found in Figures 1 and 2 at "30").
  • the contact roller 1 is mounted to a suspension in a pending arrangement, relative to the take-up roller 0.
  • the contact roller 1 is mounted to at least one linear guidance 30, there may be used one linear guidance, or there may be used more than one (e. g. two, three or even four) linear guidance(s).
  • the linear guidance(s) has/have to receive the bearings for the rollers, in this case: for the at least one contact roller(s) 1, and serve the contact rollers' movement when actuated in accordance with the present invention.
  • the linear guidance(s) also transmit all forces resulting from the roller rotation (including the rotation of the contact roller 1 in response to its contact to the take-up roller 0) into the mounting frame of the overall plant.
  • Such forces may have high values, for example in cases where the take-up roller 0 effects "unround” rotations due to waves in the polymer wound to the take-up roller 0.
  • a proper and stable support by the at least one linear guidance (30) is required essentially.
  • the contact roller 1 provides for a permanent application of a predetermined pressure to the polymer film 2 at the contact point or - better - along the contact line.
  • predetermined pressure is defined to mean a pressure of the outer surface of the contact roller 1 applied to the outer surface of the take-up roller 0 (or, if already some polymer film 2 was wound to the take-up roller 0, to the surface of the polymer film bale 0' already wound to the take-up roller 0) which is just sufficient to effect a smooth and waveless winding of the polymer film, in large numbers of layers wound, to the take-up roller 0.
  • the pressure applied by the contact roller 1 to the take-up roller 0 is in a range of from 100 N to 5,000 N (without restricting the invention to this range).
  • the axis of the contact roller 1 is preferably supported on bearings allowing a smooth movement or rotation of the contact roller 1.
  • the device comprises at least one direct gearless-drive motor means 10, preferably one direct gearless-drive motor means 10 or two direct gearless-drive motor means 10, 10, more preferably one direct gearless-drive motor means 10, for exerting a rotational drive force around a motor axis 11.
  • Said direct gearless-drive motor means 10 is/are used for the purpose of keeping the outer surface the contact roller 1 in a permanent and uniform contact with the outer surface of the take-up roller 0 (if the latter is empty and has not yet wound to it any polymer film material 2) or with the outer surface of the bale 0' of polymer material already wound to the take-up roller 0, while applying a predetermined pressure to the polymer film wound to the take-up roller 0.
  • the at least one direct gearless-drive motor means 10 is capable of exerting a rotational drive force around a motor axis 11. This is shown in the Figures by the double arrow 40: The force exerted may be directed into both rotational directions.
  • the axis 11 of the at least one direct gearless-drive motor means 10 is substantially parallel to the axes of the contact roller 1 and of the take-up roller 0.
  • the advantage of using at least one direct gearless-drive motor means 10 in the device of the present invention is as follows: Due to the arrangement of the motor's stationary magnets along a closed loop circuitry, a substantial reduction, if not even a disappearance, of the cogging phenomenon can be effected. As a consequence, a cogging-free actuation of the direct gearless drive motor's action may occur, into both directions indicated in Figure 1 by the directional arrow 40.
  • This cogging-free actuation may lead to a continuous linear movement of a force transmission means 20 connected to the motor means 10 and, in turn, may result into a continuous linear control of the pressure exerted by the contact roller 1 towards the take-up roller 0 at any distance between the contact roller outer surface from the take-up roller rotational axis.
  • the contact roller 1 must be variable in its position, relative to the take-up roller axis. Simultaneously, a permanent application of a steady pressure to the polymer film 2 by the contact roller 1 is desired. This is achieved, in accordance with the present invention, by that the at least one direct gearless-drive motor means 10 is capable of actuating a force transmission means 20 by its rotational movement around the motor axis 11.
  • the at least one direct gearless-drive motor means 10, preferably one direct gearless-drive motor means 10, is mounted to a separate stand 31 in operational distance to the contact roller (1).
  • the at least one direct gearless-drive motor means 10, preferably one direct gearless-drive motor means 10, is mounted at a distance from the contact roller 1 which can ensure that the motor means 10 may not only actuate a force transmission means 20 by its rotational movement around the motor axis 10, but also the force exerted onto the force transmission means 20 is transferred to the contact roller 1 for its movement towards, and away from, the take-up roller.
  • the at least one motor means has/have a fixed position, while the contact roller 1 moves, relative to the motor means 10, with the action of the force transmission means 20.
  • the at least one direct gearless-drive motor means 10, preferably two direct gearless-drive motor means 10, is/are mounted to one journal or to both journals of the contact roller 1 in operational distance to a separate stand 31.
  • at least one motor means 10 is, preferably two motor means 10, 10 are moving together with the contact roller 10, relative to the fixed stand 31, with the action of the force transmission means 20, one end of which is fixed to the fixed stand 31.
  • the device for operating a contact roller 1 comprises a force transmission means 20 connected to and actuated by said at least one direct gearless-drive motor means 10.
  • Said force transmission means 20 is capable of transforming, and in operation actually transforms, the rotational drive force around the axis 11 and exerted by the direct gearless-drive motor means 10 into a translational drive force substantially perpendicular to the motor axis 11.
  • said force transmission means 20 is capable of transmitting, and in operation actually transmits, said translational drive force to the contact roller 1, thereby moving the contact roller 1 towards, or away from, the take-up roller 0.
  • the directions of movement are shown in Figure 1 by the double-arrow 41 and are perpendicular to the rotational axes of the take-up and contact rollers 0, 1.
  • the device for operating a contact roller 1 comprises at least one linear guidance 30, preferably exactly one linear guidance 30 or an even number of linear guidances 30, e. g. two linear guidances 30, 30, on which the contact roller 1 or the bearing and support on which the contact roller 1 is supported may be moved in linear directions towards, or away from, the take-up roller 0.
  • Figures 1 and 2 show one linear guidance 30 exemplarily, but without restricting the invention to such an embodiment.
  • the movement is effected in accordance with the invention by the translational drive force effected by said force transmission means 20 upon actuation by the force transmission means 20 which, in turn, is actuated by the direct gearless-drive motor means 10 rotating around the motor axis 11.
  • the translational drive force can be applied to the contact roller in a smooth and reliable manner allowing the application of the desired pressure to the polymer film 2 to be wound to the take-up roller 0.
  • the device for operating a contact roller 1 comprises a rocker arm 21 as the force transmission means 20.
  • one rocker arm 21 is pivotably connecting one disk 22 driven by the motor means 10 rotationally around the motor axis 11, and at least one fixation point at the separate stand 31, or two rocker arms 21, 21 are pivotably connecting two disks 22, 22 driven by two motor means 10, 10 rotationally around the respective motor axes 11, 11, and at least one fixation point at the separate stand 31.
  • the contact roller 1 is moved towards, and away from, the take-up roller 0 or the bale 0' wound thereto so as to apply a predetermined pressure to the polymer film 2 wound to the take-up roller 0.
  • the rotational movement driving force exerted by the motor 10 rotationally around the motor axis 11 is transformed into a linear or translational movement driving force by means of a mechanical transformation element, which is the rocker arm 21 proposed as the force transmission means 20.
  • the translational movement of the contact roller 1 initiated by the rocker arm 21 occurs on the linear guidance 30 also shown in Figure 1 .
  • the directions of movement are shown in Figure 1 by the double-arrow 41.
  • the transformation of the rotational movement driving force of the direct gearless-drive motor 10 into the linear or translational movement driving force is effected around the top and bottom dead center positions of the motor axis 11 towards the contact roller centre.
  • the latter embodiment is particularly advantageous, since a relatively small rotational movement of the motor axis 11 transmits into a relatively small translational movement of the force transmission means 20, especially of the rocker arm 21, as shown in Figure 1 .
  • a sensitive movement of the contact roller 1 towards, or away from, the take-up roller 0 may be achieved, resulting into a similarly sensitive pressure application onto the take-up roller 0 or the polymer film 2 wound to the take-up roller 0.
  • a substantial reduction, if not even a disappearance, of the cogging phenomenon can be effected by using the direct gearless drive motor means 10.
  • a cogging-free actuation of the direct gearless drive motor's action may be initiated into both directions indicated in Figure 1 by the directional arrow 40.
  • Such a cogging-free actuation may lead to a continuous linear movement of the rocker arm 21 used as the force transmission means 20 connected to the motor means 10 and, in turn, may result into a continuous linear control of the pressure exerted by the contact roller 1 towards the take-up roller 0 at any distance between the contact roller outer surface from the take-up roller rotational axis.
  • the device for operating a contact roller 1 comprises a cograil 25 as the force transmission means 20.
  • said cograil 25 is pivotably connecting a cogwheel 26 driven by the motor axis 11 rotationally to the bearing of the contact roller axis.
  • the contact roller 1 is moved towards, and away from, the take-up roller 0 or the bale 0' wound thereto so as to apply a predetermined pressure to the take-up roller or the polymer film 2 wound to the take-up roller 0.
  • the directions of movement are shown in Figure 2 by the double-arrow 41.
  • the direct gearless drive motor means 10 is mounted to the journal of the contact roller 1, or where two direct gearless drive motor means 10, 10 are mounted to the journals of the contact roller 1, one cograil 25 is pivotably connecting one cogwheel 26 driven by the motor means 10 rotationally around the motor axis 11, and at least one fixation point at the separate stand 31, or two cograils 25, 25 are pivotably connecting two cogwheels 26, 26 driven by two motor means 10, 10 rotationally around the respective motor axes 11, 11, and at least one fixation point at the separate stand 31.
  • the contact roller 1 is moved towards, and away from, the take-up roller 0 or the bale 0' wound thereto so as to apply a predetermined pressure to the polymer film 2 wound to the take-up roller 0.
  • the latter embodiment is shown in Figure 4 , where only one motor means 10, one cogwheel 26 and one cograil 25 fixed to one fixation point at a fixed stand 31 are shown for reasons of simplicity.
  • the rotational movement driving force of the motor 10 around the motor axis 11 is transformed into a linear or translational movement driving force by means of a mechanical transformation element which is the cograil 25 proposed as the force transmission means 20.
  • the translational movement of the contact roller 1 transmitted by the cograil 25 and initiated by the cogwheel 26 driven by the direct gearless-drive motor means 10 occurs on the linear guidance 30 also shown in Figures 2 and 4 .
  • the transformation of the rotational movement driving force of the direct gearless-drive motor 10 into the linear or translational movement driving force is effected around the top and bottom dead center positions of the motor axis 11 towards the contact roller centre.
  • the latter embodiment is particularly advantageous, since a relatively small rotational movement of the motor axis 11 transmits into a relatively small translational movement of the force transmission means 20, especially of the cograil 25 as transmitted by the cogwheel 26, as shown in Figures 2 and 4 .
  • a sensitive movement of the contact roller 1 towards, or away from, the take-up roller 0 may be achieved, resulting into a similarly sensitive pressure application onto the take-up roller 0 or the polymer film 2 wound to the take-up roller 0.
  • the directions of movement are shown in Figures 2 and 4 by the double-arrow 41.
  • the effect of using the direct gearless drive motor means 10 in combination with the cograil/cogwheel force transmission means combination of this embodiment is particularly advantageous: A substantial reduction, if not even a disappearance, of the cogging phenomenon can be achieved. As a consequence, a cogging-free actuation of the direct gearless drive motor's action may occur, into both directions indicated in Figures 2 and 4 by the directional arrow 40.
  • This cogging-free actuation may lead to a continuous linear movement of the cograil 25 used as the force transmission means 20 connected to the motor means 10 via the cogwheel 26 and, in turn, may result into a continuous linear control of the pressure exerted by the contact roller 1 towards the take-up roller 0 at any distance between the contact roller outer surface from the take-up roller rotational axis.
  • the contact roller 1 may be in a pendulum-like arrangement with respect to the direct gearless-drive motor means 10 of the present invention.
  • This embodiment is exemplarily described while referring to Figure 3 attached hereto.
  • the invention comprises cases, where the direct gearless drive motor means 10 is arranged above said contact roller 1 (as shown in Figure 3 exemplarily, but without restriction) or where the direct gearless drive motor means is arranged below said contact roller 1 (not shown in a Figure).
  • the direct gearless-drive motor means 10 is used for the purpose of keeping the outer surface the contact roller 1 in a permanent and uniform contact with the outer surface of the take-up roller 0 (if the latter is empty and has not yet wound to it any polymer film material 2) or with the outer surface of the bale 0' of polymer material already wound to the take-up roller 0, while applying a predetermined pressure to the take-up roller outer surface or the polymer film wound to the take-up roller 0.
  • the direct gearless drive motor means 10 is capable of exerting a rotational drive force around a motor axis 11. This is shown in the Figures by the double arrow 40: The force exerted may be directed into both rotational directions.
  • the axis 11 of the direct gearless-drive motor means 10 is substantially parallel to the axes of the contact roller 1 and of the take-up roller 0.
  • the contact roller 1 must be variable in its position relative to the take-up roller axis. Simultaneously, a permanent application of a steady pressure to the polymer film 2 by the contact roller 1 is desired.
  • the direct gearless-drive motor means 10 is capable of actuating the pendulum-like force transmission means by its rotational movement around its rotational axis 11.
  • said direct gearless-drive motor means 10 is arranged above the contact roller 1.
  • a smooth actuation of a force transmission means 20 by said direct gearless motor means 10 may be achieved, resulting into transformation of the rotational drive force exerted by the motor means 10 around the motor axis 11 into a translational drive force to the contact roller 1.
  • a smooth and continuous movement of the contact roller 1 towards, or away from, the take-up roller 0 is achieved.
  • the device for operating a contact roller 1 comprises a force transmission means 20 connected to and actuated by said direct gearless drive motor means 10.
  • Said force transmission means 20 is capable of transforming, and in operation actually transforms, the rotational drive force exerted by the axis 11 of the direct gearless-drive motor means 10 into a translational drive force substantially perpendicular to the motor axis 11.
  • said force transmission means 20 is capable of transmitting, and in operation actually transmits, said translational drive force to the contact roller 1, thereby moving the contact roller 1 towards, or away from, the take-up roller 0.
  • the device for operating a contact roller 1 comprises a rocker arm 21 as the force transmission means 20.
  • Said rocker arm 21 is pivotably connecting a disk 22 driven by the motor axis 11 rotationally above the contact roller 1 to the bearing of the contact roller axis.
  • the contact roller 1 is moved towards, and away from, the take-up roller 0 or the bale 0' wound thereto so as to apply a predetermined pressure to the polymer film 2 wound to the take-up roller 0.
  • the rotational movement driving force of the motor axis 11 is transformed into a linear or translational movement driving force by means of a mechanical transformation element which is the rocker arm 21 positioned above the contact roller 1.
  • the translational movement of the contact roller 1 initiated by the rocker arm 21 may occurs on the linear guidance 30.
  • the directions of movement are similar to those shown in Figure 1 by the double-arrow 41.
  • the device for operating a contact roller 1 comprises a pendulum arm 23 as the force transmission means 20.
  • the pendulum arm 23 is capable of pivotably connecting, and in operation actually connects, the direct gearless drive motor means 10 and its rotating motor axis 11 fixed at one end of the pendulum arm 23 to the bearing of the contact roller axis pending at the other end of the pendulum arm 23.
  • the direct gearless drive motor means 10 may be arranged above said contact roller 1 (as shown in Figure 3 exemplarily, but without restriction). In alternative, albeit still preferred embodiments of the invention, the direct gearless drive motor means may be arranged below said contact roller 1.
  • the force transmission means 20 is not restricted to the pendulum arm embodiment (shown in Figure 3 exemplarily), but may also be embodied by a different translational force transmission means as, for example, a rocker arm 21.
  • the device for operating a contact roller 1 comprises a force transmission means 20, 21, 23, 25 which connects to each of the journals of the axis of the contact roller 1.
  • a force transmission means 20, 21, 23, 25 which connects to each of the journals of the axis of the contact roller 1.
  • an advantageous operation of the take-up roller 0 in winding the polymer film drawn can be achieved:
  • the use of the direct gearless drive motor means 10 in the device of the invention achieves a substantial reduction, if not even a disappearance, of the cogging phenomenon.
  • a cogging-free actuation of the direct gearless drive motor's action may occur, into both directions indicated in Figure 3 by the directional arrow 40.
  • This cogging-free actuation may lead to a continuous movement of the pendulum 23 used as the force transmission means 20 connected to the motor means 10 in the form of a circular arc around the direct gearless drive motor axis 11 and, in turn, may result into a continuous linear control of the pressure exerted by the contact roller 1 towards the take-up roller 0 at any distance between the contact roller outer surface from the take-up roller rotational axis.
  • the invention further relates to processes for operating a contact roller 1 in contact with a take-up roller 0 or with the bale 0' of a polymer film 2 to be wound to the take-up roller 0.
  • Such processes of the invention may be applicable for operating plants from which polymer films 2 are obtained which have to be wound to a take-up roller 0.
  • Such processes are applicable for operating plants wherein polymer films are stretched, either monoaxially or biaxially, so as to improve specific properties of such polymer films, and the resulting films 2 have to be wound to a take-up roller 0 for storage of for further processing. All the steps of the process of operating a contact roller 1 in accordance with the present invention are now described in detail by referring to the above-described device for operating the contact roller 1. All embodiments of the device of the present invention and already explained above in detail are also applicable to the process of the invention described below in detail.
  • the diameter of the bale 0' of polymer film material already wound to the take-up roller 0 increases.
  • the arriving polymer film 2 is pressed to the surface of the empty take-up roller 0 (or, if already some polymer film 2 was wound to the take-up roller 0, to the surface of the polymer film bale 0' already wound to the take-up roller 0) by means of the contact roller 1.
  • the axis of the take-up roller 0 and the axis of the contact roller 1 are arranged to be substantially parallel to each other.
  • the contact roller surface contacts the take-up roller surface (or the surface of the bale of polymer material already wound to the take-up roller) along a certain line which is also parallel to the axes of both rollers 0, 1.
  • the axis of the take-up roller 0 is usually supported to be stationary; the axis of the contact roller 1 must be adjustable to match to the take-up roller diameter increasing in the course of the take-up (or winding) process.
  • the contact roller 1 provides for a permanent application of a predetermined pressure to the polymer film 2 at the contact point or - better - contact line between the take-up roller 0 (or the polymer film bale 0' already wound to the take-up roller 0) and the contact roller 1.
  • the axis of the contact roller 1 is usually supported on bearings allowing a smooth movement or rotation of the contact roller.
  • the contact roller 1, as described in detail above in connection with the description of the device of the present invention, is mounted on a stand or base or frame or is mounted to a suspension and, as mounted to such a stand, base, frame or suspension, is movable, relative to the take-up roller 0. Thereby, variable distances of the contact roller 1, relative to the rotational axis of the take-up roller 0, may be adjusted.
  • Such distances include a distance between the contact roller 1 and the take-up roller 0 where the surfaces of the contact and take-up rollers 1, 0 (or the surface of the contact roller 1 and the surface of the outermost polymer film layer wound to the take-up roller 0) are in contact along a contact line parallel to the rotational axes of the contact and take-up rollers 1, 0.
  • At least one direct gearless-drive motor means 10, preferably one direct gearless-drive motor means 10 or two direct gearless-drive motor means 10, 10, more preferably one direct gearless-drive motor means 10, is/are provided for the purpose of keeping the outer surface the contact roller 1 in a permanent and uniform contact with the outer surface of the take-up roller 0 (if the latter is empty and has not yet wound to it any polymer film material 2) or with the outer surface of the bale 0' of polymer material already wound to the take-up roller 0. Simultaneously and continuously during the winding process, a predetermined pressure to the polymer film wound to the take-up roller 0 is adjusted by means of the contact roller 1.
  • the at least one direct gearless drive motor means 10 is arranged for exerting a rotational drive force by the motor 10 around the motor axis 11. This is shown in the Figures by the double arrow 40. The force exerted may be directed into both rotational directions.
  • the axis 11 of the at least one direct gearless-drive motor means 10 is adjusted to be substantially parallel to the axes of the contact roller 1 and of the take-up roller 0.
  • the contact roller 1 must be made variable in its position relative to the take-up roller axis. Simultaneously, a permanent application of a steady pressure to the polymer film 2 by the contact roller is desired.
  • the at least one direct gearless-drive motor means 10, preferably one direct gearless-drive motor means 10, is mounted to a separate stand 31 in operational distance to the contact roller (1).
  • the term "in operational distance” is understood to mean that the at least one direct gearless-drive motor means 10, preferably one direct gearless-drive motor means 10, is mounted at a distance from the contact roller 1 which can ensure that the motor means 10 may not only actuate a force transmission means 20 by its rotational movement around the motor axis 10, but also the force exerted onto the force transmission means 20 is transferred to the contact roller 1 for its movement towards, and away from, the take-up roller 0.
  • the at least one direct gearless drive motor means 10 has a fixed position, while the contact roller 1 moves, relative to the motor means 10, with the action of the force transmission means 20.
  • the at least one direct gearless-drive motor means 10, preferably two direct gearless-drive motor means 10, is/are mounted to one journal or to both journals of the contact roller 1 in operational distance to a separate stand 31.
  • at least one motor means 10 is, preferably two motor means 10, 10 are, moving together with the contact roller 10, relative to the fixed stand 31, with the action of the force transmission means 20, one end of which is fixed to the fixed stand 31.
  • the process for operating a contact roller 1 comprises providing a force transmission means 20 connected to, and actuated by, said at least one direct gearless drive motor means 10.
  • Said force transmission means 20 is made transforming, and in operation actually transforms, the rotational drive force exerted by the direct gearless drive motor means 10 around the axis 11 of the direct gearless-drive motor means 10 into a translational drive force substantially perpendicular to the motor axis 11.
  • said force transmission means 20 is made transmitting, and in operation actually transmits, said translational drive force to the contact roller 1, thereby moving the contact roller 1 towards, or away from, the take-up roller 0.
  • the directions of movement are shown in Figure 1 by the double-arrow 41. The force exerted may be directed into both rotational directions.
  • the process for operating a contact roller 1 comprises providing a linear guidance 30 on which the contact roller 1 or the bearing and support on which the contact roller 1 is supported may be moved in linear directions towards, or away from, the take-up roller 0.
  • the movement is effected in accordance with the invention by the translational drive force effected by said transmission means 20 upon actuation by the force transmission means 20 which, in turn, is actuated by the direct gearless-drive motor means 10.
  • the translational drive force can be applied to the contact roller in a smooth and reliable manner allowing the application of the desired pressure to the polymer film 2 to be wound to the take-up roller 0.
  • the effect of the present process, by using the direct gearless drive motor means 10 in combination with the force transmission means 20, is particularly advantageous: A substantial reduction, if not even a disappearance, of the cogging phenomenon can be achieved. As a consequence, a cogging-free actuation of the direct gearless drive motor's action may occur, into both directions indicated in the Figures by the directional arrow 40. This cogging-free actuation leads to a continuous linear movement of the force transmission means 20 connected to the direct gearless drive motor means 10 and, in turn, may result into a continuous linear control of the pressure exerted by the contact roller 1 towards the take-up roller 0 at any distance between the contact roller outer surface from the take-up roller rotational axis.
  • the process for operating a contact roller 1 comprises providing a rocker arm 21 as the force transmission means 20.
  • one rocker arm 21 is made pivotably connecting one disk 22 driven by the motor means 10 rotationally around the motor axis 11, and at least one fixation point at the separate stand 31, or two rocker arms 21, 21 are made pivotably connecting two disks 22, 22 driven by two motor means 10, 10 rotationally around the respective motor axes 11, 11, and at least one fixation point at the separate stand 31.
  • the contact roller 1 is moved towards, and away from, the take-up roller 0 or the bale 0' wound thereto so as to apply a predetermined pressure to the polymer film 2 wound to the take-up roller 0.
  • the rotational movement driving force of the motor around its axis 11 is transformed into a linear or translational movement driving force by means of a mechanical transformation element which is the rocker arm 21 proposed.
  • the translational movement of the contact roller 1 initiated by the rocker arm 21 is conducted on the linear guidance 30 also shown in Figure 1 .
  • the directions of movement are shown in Figure 1 by the double-arrow 41.
  • the transformation of the rotational movement driving force of the direct gearless-drive motor 10 into the linear or translational movement driving force is effected around the top and bottom dead center positions of the motor axis 11 towards the contact roller centre.
  • the latter embodiment is advantageous, since a relatively small rotational movement of the motor axis 11 transmits into a relatively small translational movement of the force transmission means 20, especially of the rocker arm 21, as shown in Figure 1 .
  • a sensitive movement of the contact roller 1 towards, or away from, the take-up roller 0 may be achieved, resulting into a similarly sensitive pressure application onto the polymer film 1 wound to the take-up roller 0.
  • the process for operating a contact roller 1 comprises providing a cograil 25 as the force transmission means 20.
  • said cograil 21 is made pivotably connecting a cogwheel 26 driven by the motor axis 11 rotationally to the bearing of the contact roller axis.
  • the contact roller 1 is moved towards, and away from, the take-up roller 0 or the bale 0' wound thereto so as to apply a predetermined pressure to the polymer film 2 wound to the take-up roller 0.
  • the directions of movement are shown in Figure 2 by the double-arrow 41.
  • the direct gearless drive motor means 10 is mounted to the journal of the contact roller 1, or where two direct gearless drive motor means 10, 10 are mounted to the journals of the contact roller 1, one cograil 25 is made pivotably connecting one cogwheel 26 driven by the motor means 10 rotationally around the motor axis 11, and at least one fixation point at the separate stand 31, or two cograils 25, 25 are made pivotably connecting two cogwheels 26, 26 driven by two motor means 10, 10 rotationally around the respective motor axes 11, 11, and at least one fixation point at the separate stand 31.
  • the contact roller 1 is moved towards, and away from, the take-up roller 0 or the bale 0' wound thereto so as to apply a predetermined pressure to the polymer film 2 wound to the take-up roller 0.
  • the latter embodiment is shown in Figure 4 .
  • the rotational movement driving force of the motor axis 11 is transformed into a linear or translational movement driving force by means of a mechanical transformation element which is the cograil 25 proposed.
  • the translational movement of the contact roller 1 initiated by the cograil 25 and initiated by the cogwheel 26 driven by the direct gearless-drive motor means 10 is effected on the linear guidance 30 also shown in Figures 2 and 4 .
  • the transformation of the rotational movement driving force of the direct gearless-drive motor 10 into the linear or translational movement driving force is effected around the top and bottom dead center positions of the motor axis 11 towards the contact roller centre.
  • the latter embodiment is advantageous, since a relatively small rotational movement of the motor axis 11 transmits into a relatively small translational movement of the force transmission means 20, especially of the cograil 25 as transmitted by the cogwheel 26, as shown in Figure 1 .
  • a sensitive movement of the contact roller 1 towards, or away from, the take-up roller 0 may be achieved, resulting into a similarly sensitive pressure application onto the polymer film 1 wound to the take-up roller 0.
  • the directions of movement are shown in Figures 2 and 4 by the double-arrow 41.
  • the contact roller 1 may be provided to be in a pendulum-like arrangement with respect to the direct gearless-drive motor means 10 of the present invention. This embodiment is exemplarily described while referring to Figure 3 attached hereto.
  • a direct gearless-drive motor means 10 is provided for the purpose of keeping outer surface the contact roller 1 in a permanent and uniform contact with the outer surface of the take-up roller 0 (if the latter is empty and has not yet wound to it any polymer film material 2) or with the outer surface of the bale 0' of polymer material already wound to the take-up roller 0, while applying a predetermined pressure to the polymer film wound to the take-up roller 0.
  • the motor means 10 is made exerting a rotational drive force around a motor axis 11. This is shown in the Figures by the double arrow 40: The force exerted may be directed into both rotational directions.
  • the axis 11 of the direct gearless-drive motor means 10 is made to be substantially parallel to the axes of the contact roller 1 and of the take-up roller 0.
  • the contact roller 1 must be made variable in its position relative to the take-up roller axis. Simultaneously, a permanent application of a steady pressure to the polymer film 2 by the contact roller is desired. This is achieved, in accordance with the present invention, by making the direct gearless-drive motor means 10 capable of actuating driving means by its rotational movement.
  • said direct gearless-drive motor means 10 is arranged above the contact roller 1.
  • a smooth actuation of a transmission means 20 by said motor means 10 may be achieved, resulting into transformation of the rotational drive force exerted by the motor means 10 into a translational drive force to the contact roller 1, whereby a movement of the contact roller 1 towards, or away from, the take-up roller 0 is achieved.
  • the process for operating a contact roller 1 comprises providing a force transmission means 20 connected to and actuated by said motor means 10.
  • Said force transmission means 20 is made transforming, and in operation actually transforms, the rotational drive force exerted by the axis 11 of the direct gearless-drive motor means 10 into a translational drive force substantially perpendicular to the motor axis 11.
  • said force transmission means 20 is made transmitting, and in operation actually transmits, said translational drive force to the contact roller 1, thereby moving the contact roller 1 towards, or away from, the take-up roller 0.
  • the process for operating a contact roller 1 comprises providing a rocker arm 21 as the force transmission means 20.
  • Said rocker arm 21 is pivotably connecting a disk 22 driven by the motor axis 11 rotationally above the contact roller 1 to the bearing of the contact roller axis.
  • the contact roller 1 is moved towards, and away from, the take-up roller 0 or the bale 0' wound thereto so as to apply a predetermined pressure to the polymer film 2 wound to the take-up roller 0.
  • the rotational movement driving force of the motor axis 11 is transformed into a linear or translational movement driving force by means of a mechanical transformation element which is the rocker arm 21 positioned above the contact roller 1.
  • the translational movement of the contact roller 1 initiated by the rocker arm 21 may occurs on the linear guidance 30.
  • the directions of movement are similar to those shown in Figure 1 by the double-arrow 41.
  • the process for operating a contact roller 1 comprises providing a pendulum arm 23 as the force transmission means 20.
  • the pendulum arm 23 is capable of pivotably connecting, and in operation actually connects, the rotating motor axis 11 fixed at one end of the pendulum arm 23 to the bearing of the contact roller axis pending at the other end of the pendulum arm 23, thereby moving the contact roller 1 towards, and away from, the take-up roller 0 or the bale 0' wound thereto in the direction of a circular arc around the motor axis 11, as shown by the arrow 42 in Figure 3 .
  • a predetermined pressure is applied, by the contact roller 1 swinging like a pendulum around the direct gearless-drive motor means axis 11 in the shape of a circular arc, to the polymer film 2 wound to the take-up roller 0.
  • the process for operating a contact roller 1 according to the invention comprises providing a force transmission means 20, 21, 23, 25 which connects to each of the journals of the axis of the contact roller 1.
  • a force transmission means 20, 21, 23, 25 which connects to each of the journals of the axis of the contact roller 1.
  • the device and process of the present invention are highly advantageous over the known devices and processes for operating contact rollers, particularly the one described in the document EP-B 1 423 318 :
  • the effect of using the direct gearless drive motor means 10 in combination with the force transmission means 20 of this invention is particularly advantageous: A substantial reduction, if not even a disappearance, of the cogging phenomenon can be achieved by employing the direct gearless drive motor means 10. As a consequence, a cogging-free actuation of the direct gearless drive motor's action may occur, into both directions indicated in the Figures by the directional arrow 40.
  • This cogging-free actuation may lead to a continuous linear movement of the force transmission means 20 connected to the motor means 10 and, in turn, may result into a continuous linear control of the pressure exerted by the contact roller 1 towards the take-up roller 0 at any distance between the contact roller outer surface from the take-up roller rotational axis.
  • the device of the present invention may be realized easily: Only the contact roller is being moved as soon as any decrease of application pressure of the polymer film to the take-up roller occurs, e.g. as a result of an out-of-round rotation of the take-up roller or of vibrations occurring during winding the polymer film.
  • an increasing diameter of the bale of wound polymer film to the take-up roller does not require any adaptation of the position of the contact roller which is not compensated by the direct gearless-drive motor means in co-operation with the force transmission means actuated by said direct gearless drive motor means without the undesired cogging phenomenon.
  • the direct gearless-drive motor means allows short distances of movement of the contact roller, resulting into a substantial reduction of the mass of the driving unit. Moreover, there could be experienced surprisingly a decreasing influence of the reduced mass acceleration onto reduced vibrations in the course of operating the winding process.

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Claims (18)

  1. Dispositif pour faire fonctionner au moins un cylindre contacteur (1) en contact avec un cylindre préhenseur (0) ou avec une balle de film polymère (0') enroulée sur le cylindre préhenseur (0), préférentiellement dans une installation pour étirer un film polymère qui est, après l'étape d'étirage, enroulé sur ledit cylindre préhenseur (0) pouvant pivoter autour d'un axe rotatif, ledit au moins un cylindre contacteur (1) pouvant pivoter autour d'un axe rotatif disposé parallèle à l'axe rotatif du cylindre préhenseur, étant supporté mobile par des distances variables perpendiculaires par rapport à l'axe rotatif du cylindre préhenseur et prévoyant une application permanente d'une pression prédéterminée sur le film polymère (2) pendant ledit enroulement sur le cylindre préhenseur ou la balle de film polymère (0') le long d'une ligne de contact étant parallèle aux axes des cylindres préhenseur et contacteur (0, 1) et sur la surface du cylindre contacteur (1) et du cylindre préhenseur (0) ou de la balle de film polymère (0'), ledit dispositif étant caractérisé par le fait qu'il comprend :
    - au moins un moyen moteur d'entraînement sans engrenage direct (10) pour exercer une force d'entraînement rotative autour d'un axe moteur (11) ;
    - ledit axe moteur (11) étant essentiellement parallèle aux axes des cylindres contacteur et préhenseur (0, 1) et étant apte à actionner un moyen de transmission de force (20) par son mouvement rotatif ;
    - ledit moyen de transmission de force (20) étant raccordé audit et actionné par ledit au moins un moyen moteur (10) et transformant la force d'entrainement rotative exercée par l'axe (11) de l'au moins un moyen moteur d'entraînement sans engrenage direct (10) en une force d'entraînement de translation essentiellement perpendiculaire à l'axe moteur (11);
    - ledit moyen de transmission de force (20) étant apte à transmettre ladite force d'entraînement de translation au cylindre contacteur (1), déplaçant ainsi le cylindre contacteur (1) en le rapprochant ou en l'éloignant du cylindre préhenseur (0).
  2. Dispositif pour faire fonctionner au moins un cylindre contacteur (1) selon la revendication 1, dans lequel ledit cylindre contacteur (1) est guidé, dans les directions de la force d'entraînement de translation, par au moins un guidage linéaire (30).
  3. Dispositif pour faire fonctionner au moins un cylindre contacteur (1) selon la revendication 1 ou la revendication 2,
    dans lequel l'au moins un moyen moteur d'entraînement sans engrenage direct (10), préférentiellement un moyen moteur d'entraînement sans engrenage direct (10), est monté sur un support séparé (31) à distance opérationnelle du cylindre contacteur (1) ; ou
    dans lequel l'au moins un moyen moteur d'entraînement sans engrenage direct (10), préférentiellement deux moyens moteur d'entraînement sans engrenage direct (10), est/sont monté(s) sur le(s) tourillon(s) du cylindre contacteur (1) à distance opérationnelle d'un support séparé (31).
  4. Dispositif pour faire fonctionner au moins un cylindre contacteur (1) selon l'une quelconque des revendications 1 à 3,
    dans lequel ledit moyen de transmission de force (20) est un bras oscillant (21) raccordant de manière pivotante un disque (22) entraîné par un moyen moteur d'entraînement sans engrenage direct (10) monté sur un support séparé de manière rotative autour de l'axe moteur (11) et le roulement de l'axe du cylindre contacteur, étant ainsi apte à déplacer le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0) ; ou
    dans lequel ledit moyen de transmission de force (20) est un bras oscillant (21) raccordant de manière pivotante un disque (22) entraîné par un moyen moteur d'entraînement sans engrenage direct (10) monté sur un tourillon du cylindre contacteur de manière rotative autour de l'axe moteur (11) et au moins un point de fixation sur le support séparé (31), étant ainsi apte à déplacer le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0).
  5. Dispositif pour faire fonctionner au moins un cylindre contacteur (1) selon l'une quelconque des revendications 1 à 3,
    dans lequel ledit moyen de transmission de force (20) est une crémaillère (25) raccordant une roue dentée (26) entraînée par un moyen moteur d'entraînement sans engrenage direct (10) monté sur un support séparé de manière rotative autour de l'axe moteur (11) et le roulement de l'axe du cylindre contacteur, étant ainsi apte à déplacer le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0) ; ou
    dans lequel ledit moyen de transmission de force (20) est une crémaillère (25) raccordant une roue dentée (26) entraînée par un moyen moteur d'entraînement sans engrenage direct (10) monté sur un tourillon du cylindre contacteur de manière rotative autour de l'axe moteur (11) et au moins un point de fixation sur le support séparé (31), étant ainsi apte à déplacer le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0).
  6. Dispositif pour faire fonctionner au moins un cylindre contacteur (1) en contact avec un cylindre préhenseur (0) ou avec une balle de film polymère (0') enroulée sur le cylindre préhenseur (0), préférentiellement dans une installation pour étirer un film polymère qui est, après l'étape d'étirage, enroulé sur ledit cylindre préhenseur (0) pouvant pivoter autour d'un axe rotatif,
    ledit au moins un cylindre contacteur (1) pouvant pivoter autour d'un axe rotatif disposé parallèle à l'axe rotatif du cylindre préhenseur, étant supporté mobile par des distances variables perpendiculaires par rapport à l'axe rotatif du cylindre préhenseur et prévoyant une application permanente d'une pression prédéterminée sur le film polymère (2) pendant ledit enroulement sur le cylindre préhenseur ou sur la balle de film polymère (0') le long d'une ligne de contact étant parallèle aux axes des cylindres préhenseur et contacteur (0, 1) et sur la surface du cylindre contacteur (1) et du cylindre préhenseur (0) ou de la balle de film polymère (0'),
    ledit dispositif étant caractérisé par le fait qu'il comprend :
    - au moins un moyen moteur d'entraînement sans engrenage direct (10) pour exercer une force d'entraînement rotative autour d'un axe moteur (11) ;
    - ledit axe moteur (11) étant essentiellement parallèle aux axes des cylindres contacteur et préhenseur (0, 1) et étant apte à actionner un moyen de transmission de force (20) par son mouvement rotatif ;
    - ledit moyen moteur d'entraînement sans engrenage direct (10) étant disposé au-dessus ou en dessous dudit cylindre contacteur (1);
    - ledit moyen de transmission de force (20) raccordé audit et actionné par ledit moyen moteur d'entraînement sans engrenage direct (10) et transformant la force d'entrainement rotative exercée par l'axe (11) du moyen moteur d'entraînement sans engrenage direct (10) en une force d'entraînement de translation dans la direction d'un arc circulaire autour de l'axe moteur (11);
    - ledit moyen de transmission de force (20) étant apte à transmettre ladite force d'entraînement de translation au cylindre contacteur (1), déplaçant ainsi le cylindre contacteur (1) en le rapprochant ou en l'éloignant du cylindre préhenseur (0).
  7. Dispositif pour faire fonctionner au moins un cylindre contacteur (1) selon la revendication 6, dans lequel ledit moyen de transmission de force (20) est un bras oscillant (21) raccordant de manière pivotante l'axe moteur pivotant (11) et le roulement de l'axe du cylindre contacteur, déplaçant ainsi le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0).
  8. Dispositif pour faire fonctionner au moins un cylindre contacteur (1) selon la revendication 6, dans lequel ledit moyen de transmission de force (20) est un bras pendulaire (23) raccordant de manière pivotante l'axe moteur pivotant (11) fixé à une extrémité du bras pendulaire (23) et le roulement de l'axe du cylindre contacteur en attente à l'autre extrémité du bras pendulaire (23), déplaçant ainsi le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0).
  9. Dispositif pour faire fonctionner au moins un cylindre contacteur (1) selon l'une quelconque des revendications 1 à 8, dans lequel ledit moyen de transmission de force (20, 21, 23, 25) est raccordé à chacun des tourillons de l'axe du cylindre contacteur (1), permettant ainsi d'appliquer de manière uniforme la force de translation sur le cylindre contacteur (1) et, ainsi, le cylindre contacteur (1) sur la ligne de contact du cylindre contacteur (1) et du cylindre préhenseur (0) ou de la balle de film polymère enroulée sur le cylindre préhenseur (0).
  10. Procédé pour faire fonctionner au moins un cylindre contacteur (1) en contact avec un cylindre préhenseur (0) ou avec une balle de film polymère (0') enroulée sur le cylindre préhenseur (0), préférentiellement dans une installation pour étirer un film polymère qui est, après l'étape d'étirage, enroulé sur ledit cylindre préhenseur (0) pouvant pivoter autour d'un axe rotatif,
    ledit au moins un cylindre contacteur (1) pouvant pivoter autour d'un axe rotatif disposé parallèle à l'axe rotatif du cylindre préhenseur et étant supporté mobile par des distances variables perpendiculaires par rapport à l'axe rotatif du cylindre préhenseur,
    dans lequel une pression prédéterminée est appliquée en permanence sur le film polymère (2) par ledit cylindre contacteur (1) pendant ledit enroulement sur le cylindre d'enroulement ou sur la balle de film polymère (0') le long d'une ligne de contact étant parallèle aux axes des cylindres préhenseur et contacteur (0, 1) et sur la surface du cylindre contacteur (1) et du cylindre préhenseur (0) ou de la balle de film polymère,
    ledit procédé étant caractérisé par le fait qu'il comprend :
    - la fourniture d'au moins un moyen moteur d'entraînement sans engrenage direct (10) pour exercer une force d'entraînement rotative autour d'un axe moteur (11);
    - le réglage de la direction dudit axe moteur (11) pour qu'il soit essentiellement parallèle aux axes des cylindres contacteur et préhenseur (0, 1) et la fourniture au moyen moteur d'entraînement sans engrenage direct (10) de la capacité à actionner un moyen de transmission de force (20) par son mouvement rotatif ;
    - la fourniture dudit moyen de transmission de force (20) raccordé audit ou actionné par ledit moyen moteur (10), ledit moyen de transmission de force (20) transformant la force d'entraînement rotative exercée par le moyen moteur d'entraînement sans engrenage direct (10) autour de l'axe (11) du moyen moteur d'entraînement sans engrenage direct (10) en une force d'entraînement de translation essentiellement perpendiculaire à l'axe moteur (11) ; et
    - le fait de permettre audit moyen de transmission de force (20) de transmettre ladite force d'entraînement de translation au cylindre contacteur (1), déplaçant ainsi le cylindre contacteur (1) en le rapprochant ou en l'éloignant du cylindre préhenseur (0).
  11. Procédé selon la revendication 10, ledit procédé comprenant le guidage dudit cylindre contacteur (1) dans les directions de la force d'entraînement de translation par au moins un guidage linéaire (30).
  12. Procédé selon la revendication 10 ou la revendication 11, comprenant :
    - soit les étapes de montage d'au moins un moyen moteur d'entraînement sans engrenage direct (10), préférentiellement un moyen moteur d'entraînement sans engrenage direct (10), sur un support séparé (31) à distance opérationnelle du cylindre contacteur (1) ;
    - soit l'étape de montage d'au moins un moyen moteur d'entraînement sans engrenage direct (10), préférentiellement deux moyens moteur d'entraînement sans engrenage direct (10), sur le(s) tourillon(s) du cylindre contacteur (1) à distance opérationnelle d'un support séparé (31).
  13. Procédé selon l'une quelconque des revendications 10 à 12,
    ledit procédé comprenant une étape de fourniture, en tant que ledit moyen de transmission de force (20), d'un bras oscillant (21) raccordant de manière pivotante un disque (22) entraîné par un moyen moteur d'entraînement sans engrenage direct (10) monté sur un support séparé de manière rotative autour de l'axe moteur (11) et le roulement de l'axe du cylindre contacteur, étant ainsi apte à déplacer le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0) ; ou
    ledit procédé comprenant une étape de fourniture, en tant que ledit moyen de transmission de force (20), d'un bras oscillant (21) raccordant de manière pivotante un disque (22) entraîné par un moyen moteur d'entraînement sans engrenage direct (10) monté sur un tourillon du cylindre contacteur de manière rotative autour de l'axe moteur (11) et au moins un point de fixation sur le support séparé (31), étant ainsi apte à déplacer le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0).
  14. Procédé selon l'une quelconque des revendications 10 à 12,
    ledit procédé comprenant une étape de fourniture, en tant que ledit moyen de transmission de force (20), d'une crémaillère (25) raccordant une roue dentée (26) entraînée par un moyen moteur d'entraînement sans engrenage direct (10) monté sur un support séparé de manière rotative autour de l'axe moteur (11) et le roulement de l'axe du cylindre contacteur, étant ainsi apte à déplacer le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0) ; ou ledit procédé comprenant une étape de fourniture, en tant que ledit moyen de transmission de force (20), d'une crémaillère (25) raccordant une roue dentée (26) entraînée par un moyen moteur d'entraînement sans engrenage direct (10) monté sur un tourillon du cylindre contacteur de manière rotative autour de l'axe moteur (11) et au moins un point de fixation sur le support séparé (31), étant ainsi apte à déplacer le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0).
  15. Procédé pour faire fonctionner au moins un cylindre contacteur (1) en contact avec un cylindre préhenseur (0) ou avec une balle de film polymère (0') enroulée sur le cylindre préhenseur (0), préférentiellement dans une installation pour étirer un film polymère qui est, après l'étape d'étirage, enroulé sur ledit cylindre préhenseur (0) pouvant pivoter autour d'un axe rotatif,
    ledit au moins un cylindre contacteur (1) pouvant pivoter autour d'un axe rotatif disposé parallèle à l'axe rotatif du cylindre préhenseur et étant supporté mobile par des distances variables perpendiculaires par rapport à l'axe rotatif du cylindre préhenseur,
    dans lequel une pression prédéterminée est appliquée en permanence sur le film polymère (2) par ledit cylindre contacteur (1) pendant ledit enroulement sur le cylindre d'enroulement ou sur la balle de film polymère (0') le long d'une ligne de contact étant parallèle aux axes des cylindres préhenseur et contacteur (0, 1) et sur la surface du cylindre contacteur (1) et du cylindre préhenseur (0) ou de la balle de film polymère,
    ledit procédé étant caractérisé par le fait qu'il comprend :
    - la fourniture d'au moins un moyen moteur d'entraînement sans engrenage direct (10) pour exercer une force d'entraînement rotative autour d'un axe moteur (11);
    - le réglage de la direction dudit axe moteur (11) pour qu'il soit essentiellement parallèle aux axes des cylindres contacteur et préhenseur (0, 1) et la fourniture au moyen moteur d'entraînement sans engrenage direct (10) de la capacité à actionner un moyen de transmission de force (20) par son mouvement rotatif ;
    - la fourniture dudit moyen moteur d'entraînement sans engrenage direct (10) à disposer au-dessus dudit cylindre contacteur (1) ;
    - la fourniture dudit moyen de transmission de force (20) raccordé audit ou actionné par ledit moyen moteur d'entraînement sans engrenage direct (10), ledit moyen de transmission de force (20) transformant la force d'entraînement rotative exercée par l'axe (11) du moyen moteur d'entraînement sans engrenage direct (10) en une force d'entraînement de translation dans la direction d'un arc circulaire autour de l'axe moteur (11) ; et
    - le fait de permettre audit moyen de transmission de force (20) de transmettre ladite force d'entraînement de translation au cylindre contacteur (1), déplaçant ainsi le cylindre contacteur (1) en le rapprochant ou en l'éloignant du cylindre préhenseur (0).
  16. Procédé selon la revendication 15,
    ledit procédé fournissant ledit moyen de transmission de force (20) en tant que bras oscillant (21) raccordant de manière pivotante l'axe moteur pivotant (11) et le roulement de l'axe du cylindre contacteur, déplaçant ainsi le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0).
  17. Procédé selon la revendication 15,
    ledit procédé fournissant ledit moyen de transmission de force (20) en tant que bras pendulaire (23) raccordant de manière pivotante l'axe moteur pivotant (11) fixé à une extrémité du bras pendulaire (23) et le roulement de l'axe du cylindre contacteur en attente à l'autre extrémité du bras pendulaire (23), déplaçant ainsi le cylindre contacteur (1) en le rapprochant et en l'éloignant du cylindre préhenseur (0) ou de la balle (0') y étant enroulée de manière à appliquer une pression prédéterminée sur le film polymère (2) enroulé autour du cylindre préhenseur (0).
  18. Procédé selon l'une quelconque des revendications 10 à 17, fournissant en outre le raccordement dudit moyen de transmission de force (20, 21, 23, 25) à chacun des tourillons de l'axe du cylindre contacteur (1), permettant ainsi d'appliquer de manière uniforme la force de translation sur le cylindre contacteur (1) et, ainsi, le cylindre contacteur (1) sur la ligne de contact du cylindre contacteur (1) et du cylindre préhenseur (0) ou de la balle de film polymère enroulée sur le cylindre préhenseur (0).
EP20120158593 2012-03-08 2012-03-08 Dispositif pour faire fonctionner un cylindre contacteur et procédé pour faire fonctionner un cylindre contacteur Active EP2636623B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20120158593 EP2636623B1 (fr) 2012-03-08 2012-03-08 Dispositif pour faire fonctionner un cylindre contacteur et procédé pour faire fonctionner un cylindre contacteur
CN201310072564.1A CN103303717B (zh) 2012-03-08 2013-03-07 用于操作接触辊的装置以及用于操作接触辊的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120158593 EP2636623B1 (fr) 2012-03-08 2012-03-08 Dispositif pour faire fonctionner un cylindre contacteur et procédé pour faire fonctionner un cylindre contacteur

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EP2636623B1 true EP2636623B1 (fr) 2015-05-06

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CN107840173A (zh) * 2017-12-02 2018-03-27 无锡先导智能装备股份有限公司 收卷装置、收卷方法及分切机
CN109160336B (zh) * 2018-07-10 2020-09-22 上海大汇塑业有限公司 一种智能调节薄膜收卷装置及薄膜生产线

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DE2214350C3 (de) * 1972-03-24 1974-11-28 Erwin Kampf Maschinenfabrik, 5276 Wiehl Aufwickelvorrichtung für Bänder oder Folien
DE20114750U1 (de) 2001-09-06 2002-11-28 Brueckner Maschbau Anordnung zum Betrieb einer Kontaktwalze
JP2003221760A (ja) * 2002-01-24 2003-08-08 Tsudakoma Corp 織機の布巻取り装置
DE10250863B4 (de) * 2002-10-31 2005-06-02 Brückner Maschinenbau GmbH Wickelvorrichtung für bahnförmige Materialien, insbesondere Kunststofffolien
JP2006016102A (ja) * 2004-06-30 2006-01-19 Mitsubishi Heavy Ind Ltd シート状物巻取り装置

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CN103303717B (zh) 2016-08-24
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