EP0383450B1 - Magnetische Walzvorrichtung - Google Patents

Magnetische Walzvorrichtung Download PDF

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Publication number
EP0383450B1
EP0383450B1 EP19900300886 EP90300886A EP0383450B1 EP 0383450 B1 EP0383450 B1 EP 0383450B1 EP 19900300886 EP19900300886 EP 19900300886 EP 90300886 A EP90300886 A EP 90300886A EP 0383450 B1 EP0383450 B1 EP 0383450B1
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EP
European Patent Office
Prior art keywords
rollers
roller
main
workpiece
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19900300886
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English (en)
French (fr)
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EP0383450A1 (de
Inventor
Hideo C/O Bellmatic Limited Suzuki
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.)
Bellmatic Ltd
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Bellmatic Ltd
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Filing date
Publication date
Application filed by Bellmatic Ltd filed Critical Bellmatic Ltd
Publication of EP0383450A1 publication Critical patent/EP0383450A1/de
Application granted granted Critical
Publication of EP0383450B1 publication Critical patent/EP0383450B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/02—Shape or construction of rolls
    • B21B27/03—Sleeved rolls
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G1/00—Calenders; Smoothing apparatus
    • D21G1/002—Opening or closing mechanisms; Regulating the pressure
    • D21G1/004—Regulating the pressure
    • D21G1/0053—Regulating the pressure using magnetic forces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories

Definitions

  • This invention relates according to the precharacterising part of claims 1 and 2 respectively to an apparatus for rolling metal foil, cloth, paper, on the like, for calendering.
  • Numerals 1, 2 and 3 denote rollers
  • numerals 5, 6 and 7 denote guide rollers
  • numeral 4 denotes a workpiece.
  • the workpiece 4 is guided by the guide rollers 5, 6 and 7 and rolled by the rollers 1, 2 and 3 respectively such that the workpiece 4 is flattened or calendered.
  • a hydraulic pump 8 presses a bearing 1a which supports the roller 1 such that the workpiece 4 is pressed between rollers 1 and 2. It is also possible to press upwardly on a bearing 2a which supports the roller 2 such that the workpiece 4 is pressed in between rollers 1 and 2.
  • rollers 1, 2 and 3 are made of metal, they tend to deflect as shown in Fig. 15 because of the pressure applied to the bearings 1a or 21. So, it is impossible to clamp the workpiece between the rollers with a uniform pressure, resulting in poor performance.
  • the pressure exerted by the hydraulic pump 8 against the bearings 1a or 2a cannot always be maintained at a constant value, so the unbalanced pressure causes an unbalanced rolling as shown in Fig. 17.
  • one of the rollers 1, 2 and 3 is of an elastic material, for instance, plastic or the like, its surface is easily scratched resulting in a degraded workpiece.
  • DE-A-3404833 representing the closest prior art discloses rolling apparatus comprising two parallel work rollers, adapted to press a workpiece passing between the two rollers. At least one of the work rollers is movable and means are provided for controllably urging the or each movable roller towards the other to press the workpiece.
  • a rolling apparatus comprising a main roller rotatably supported by a frame and a pressure roller rotatably supported by the frame, the pressure roller being urged towards the main roller under a force, the workpiece being arranged to pass between the pressure and main rollers so as to be pressed, characterised in that the main roller is of non-magnetic material and is hollow, in that a magnet is provided inside the hollow main roller and in that the pressure roller is of magnetic material so that the pressure roller is urged by said magnet towards the main roller to provide said force.
  • a rolling apparatus comprising a frame and two cylindrical main rollers rotatably supported adjacent and parallel to each other by the frame, at least one of said main rollers being mounted so as to be movable towards and away from the other main roller and being urged towards the other main roller under a force, the workpiece being arranged to pass between the main rollers so as to be pressed, characterised in that the main rollers are of magnetic material, in that the frame has two yokes, each main roller being disposed adjacent to a respective yoke, each yoke having a solenoid wound thereon for magnetising the respective yoke by generating magnetic flux perpendicular to the direction of motion of the workpiece and along a line through the centres of the two main rollers, one of the yokes being magnetised as a north and the other as a south pole, the main rollers being magnetised by the magnetic flux generated by the solenoids so as to be attracted to each other by said force.
  • Numeral 11 denotes a main roller which is tubularly shaped and is placed in opposition relation with other pressure rollers and made of non-magnetic materials.
  • the roller rim is preferably thin so that a sufficient magnetic attractive force may be established between the main roller 11 and a pressure roller 13. Although a thin roller rim is preferable, it should be mechanically strong enough to undergo the rolling pressure without excessive deterioration.
  • the main roller 11 is rotatably supported by a frame 12.
  • a suitable number of the pressure rollers 13 which are made of magnetic material are provided around the circumference of the main roller 11.
  • the pressure rollers 13 are rotatably supported by the frame and in pressing relation against the main roller 11.
  • a yoke 14 which consists of magnetic material is inserted and both ends of the yoke 14 are fixed to the frame 12.
  • the yoke 14 is provided with several solenoids 22 which are in opposing relation to the pressure rollers 13. Magnetic flux caused by these solenoids 22 is shown in Fig. 5.
  • a suitable number of guide roller 16 are provided in planetary relation to the main roller 11, and these guide rollers 16 are rotatably supported by the frame 12. Referring to Fig. 1, a workpiece 17 is inserted and passed between the main roller 11 and the pressure roller 13 being guided by the respective guide roller 16. Repeating several equivalent path ways, the workpiece 17 is finally drawn out.
  • the yoke 14 is provided with salient poles 21a which establish a magnetic pole and also with grooves 21b which accommodate the solenoids 22 shaped annularly with the winding coil accommodated therein.
  • the magnetic flux in the yoke, established by the solenoids 22, is shown in Fig. 5.
  • N-pole and S-pole are alternately established, and around the circumference of the yoke 14, N-pole or S-pole is established. In this drawing, N-pole is shown. It is also possible to eliminate the guide rollers so that the workpiece 17 is advanced along the circumference of the main roller 11 being inserted and pressed between the main roller 11 and the presser roller 13.
  • each pressure roller 13 is attracted to the main roller 11 because of a magnetic force established by the solenoids 22.
  • the pressure roller 13 is rotated by the fractional force between the pressure roller 13 and the workpiece 17.
  • the pressing of workpiece between the pressure rollers 13 and the main roller 11 is conducted by the magnetic force established by the solenoids 22, and the magnetic force is controlled by regulating the electric direct current to the solenoids.
  • a yoke 26 is provided with solenoids 25 and with salient poles 26a which establish the magnetic poles and with grooves 26b in which solenoids are accommodated.
  • the magnetic flux in the yoke 26 is shown in Fig. 7.
  • N-pole and S-pole are alternately established, and around the circumference of the yoke 26, N-pole or S-pole is established. In this drawing, N-pole is shown.
  • a yoke 31 is provided with solenoids 32 and salient poles 31b established by the solenoids and grooves 31a grooved in parallel with the axial line of yoke such that the solenoids 32 are accommodated therein.
  • the magnetic flux will be as shown in Fig. 9.
  • N-pole or S-pole is established.
  • N-pole is shown.
  • N-pole or S-pole is established.
  • the yokes 14, 26 and 31 establish a uniform magnetic attractive force in a direction perpendicular to the axis of a yoke such that the presser roller is attracted to the main roller with a uniform attractive force established along its axial line throughout.
  • the uniform magnetic attractive force can be easily controlled by regulating the electric current to the solenoids. In this manner the pressing due to the pressure roller 12 can be adjusted. It is also possible to use a permanent magnet in lieu of solenoids 22, 25 and 32.
  • Two main rollers 36, 37 are placed in opposing relation and the distance between these two rollers is adjustable. Electromagnets 38 and 39 are disposed such that an attractive force between these two main rollers 36, 37 is established.
  • the main rollers 36, and 37 are made of magnetic material and are adapted to be moved in the direction of the attractive force and rotatably supported by a frame 40 and 41.
  • One of the main rollers is driven by a belt 42 connected to a drive source 43.
  • the electric magnets 38 and 39 are provided with yokes 44, 45 respectively which are fixed to the frames 40, 41.
  • the yokes 44, 45 are provided with solenoids 46, 47 respectively.
  • Salient poles 44a, 45a are placed adjacent to the main rollers 36 and 37 respectively. It is so adapted that when the electromagnet 39 establishes a N-pole, the electromagnet 38 establishes a S-pole so that both main rollers 36 and 37 attract each other.
  • the main rollers 36 and 37 approach each other and clamp the workpiece 49.
  • the drive motor 43 energizes, the main roller 36 rotates and the workpiece 49 is advanced by the fractional force established between the workpiece and the main roller.
  • the workpiece is rolled and the pressing force by these main rollers is controlled by regulating the electric current to the solenoids 46 and 47.
  • a middle roller 50 is placed between main rollers 36 and 37.
  • the middle roller 50 is made of a magnetic material, and is attracted to, in contacting relation with, both main rollers 36, 37 when solenoids 46, 47 are energized.
  • a workpiece 49 clamped between the middle roller 50 and the main rollers 36 and 37 is advanced by the fractional force established between the middle roller 50 and the main rollers 36 and 37.
  • several guide rollers 48 are placed such that the workpiece 49 is guided between the middle roller and the main roller.
  • solenoids 46 and 47 When solenoids 46 and 47 are energized, the main roller 36 and 37 tend to approach each other, and the workpiece 49 is pressed between the main roller and the middle roller. Further, when the main roller 36 rotates being driven by a belt 42 connected to a motor 43, the workpiece is advanced by the frictional force established between the main roller and the middle roller.
  • the pressing force against the workpiece can be controlled by regulating the electric current to the solenoids 46 and 47.
  • FIG. 12 the sixth embodiment of the present invention will be described.
  • Two middle rollers 50a, 50b made of a magnetic material are placed between main rollers 36, and 37.
  • the construction of the sixth embodiment is very similar to that of the fifth embodiment.
  • a workpiece 49 is inserted between the middle roller 50a and a main roller 37 and is drawn out and finally inserted between the middle roller 50a and a main roller 36.
  • solenoids 46, and 47 energize, an attractive force is established between the main rollers 36, and 37 and between the middle roller 50a, 50b.
  • the main roller 36 is rotated by a belt connected to a motor 43
  • the workpiece 49 is advanced by the friction force established between the workpiece and the main roller.
  • the pressing force against the workpiece can be controlled by regulating the electric current to the solenoids 46, and 47.
  • auxiliary rollers 51 are disposed between main rollers 36, and 37.
  • the auxiliary rollers 51 are made of magnetic material. Increasing the quantity of auxiliary rollers 51 cause the magnetic force established between solenoids 46, and 47 to be weakened.
  • auxiliary solenoids 52 are placed proximate the auxiliary rollers 51.
  • the auxiliary rollers 51 are rotatably supported by frames 53 and are adapted to be moved vertically.
  • the frames 53 are disposed between the main rollers 36, and 37, and are replaceable.
  • the auxiliary solenoids 52 can be eliminated. It is also possible to establish the necessary magnetic force auxiliary solenoids 52.
  • the direction of magnetic force established by the auxiliary rollers 51 is in accordance with the direction of magnetic force established by the solenoids 52.
  • several guide rollers 48 are located at suitable positions, and a workpiece 49 is inserted between the main roller 37 and the auxiliary roller 51, and further between the main roller 36 and the auxiliary roller 51 being rolled and guided steppingly.
  • the solenoids 46, and 47 and the auxiliary solenoids 52 When the solenoids 46, and 47 and the auxiliary solenoids 52 are energized, the attractive force between the main rollers 36, and 37 and between the auxiliary rollers 51 are established.
  • the main roller 36 When the main roller 36 is rotated by a belt 42 connected to a drive motor 43, the workpiece 49 is rolled by the main rollers and auxiliary rollers, guided by guide rollers. The workpiece 49 is advanced by the frictional force established between the workpiece and the opposing roller.
  • the solenoids 46, and 47 and the auxiliary solenoids 52 are used but these solenoids can be replaced by permanent magnets. According to the aforementioned embodiments, the presser rollers undergo the forced drive.
  • uniform pressure can be applied perpendicularly on the workpiece clamped between the main roller and the pressure roller and the pressure can be freely controlled by regulating the electric current to the solenoid.
  • both the main roller and the pressure roller are made of metals
  • the workpiece is pressed between the main roller and the presser roller by the magnetic attractive force established therebetween, and the problem of shorter roller life is eliminated although the pressing force is considerably strong, and the frequency of exchanging rollers becomes less because the rollers are made of hard metals.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Metal Rolling (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (6)

  1. Walzvorrichtung mit einer drehbar mittels eines Rahmens gelagerten Hauptwalze (11) und einer drehbar mittels des Rahmens gelagerten Preßwalze (13), wobei die Preßwalze (13) unter einer Kraft gegen die Hauptwalze (11) getrieben wird und wobei das Werkstück so angeordnet ist, daß es zwischen der Preßwalze und der Hauptwalze hindurchläuft, um zusammengepreßt zu werden, dadurch gekennzeichnet, daß die Hauptwalze aus nichtmagnetischem Werkstoff besteht und hohl ist, daß innerhalb der hohlen Hauptwalze (11) ein Magnet (22) vorgesehen ist, und dadurch, daß die Preßwalze (13) aus magnetischem Werkstoff besteht, so daß die Preßwalze (13) mittels des Magneten (22) gegen die Hauptwalze getrieben wird, um die Kraft zu erzeugen.
  2. Walzvorrichtung mit einem Rahmen (40, 41) und zwei zylindrischen Hauptwalzen (36, 37), die drehbar nebeneinander und parallel zueinander mittels des Rahmens (40, 41) gelagert sind, wobei wenigstens eine der Hauptwalzen so angebracht ist, daß sie in Richtung auf die andere Hauptwalze und von dieser weg beweglich ist und unter einer Kraft gegen die andere Hauptwalze getrieben wird, und wobei das Werkstück (49) so angeordnet ist, daß es zwischen den Hauptwalzen (36, 37) hindurchläuft, um zusammengepreßt zu werden, dadurch gekennzeichnet, daß die Hauptwalzen (36, 37) aus magnetischem Werkstoff bestehen und daß der Rahmen zwei Joche (44, 45) aufweist, wobei jede Hauptwalze (36, 37) angrenzend an ein entsprechendes Joch (44, 45) angeordnet ist und wobei jedes Joch eine darauf gewickelte Magnetspule (46, 47) aufweist, um das entsprechende Joch zu magnetisieren, indem senkrecht zu der Bewegungsrichtung des Werkstücks (49) und entlang einer Linie durch die Mitten der beiden Hauptwalzen (36, 37) ein magnetischer Fluß erzeugt wird, wobei eines der Joche als Nordpol und das andere als Südpol magnetisiert wird und wobei die Hauptwalzen (36, 37) mittels des durch die Magnetspulen (46, 47) erzeugten magnetischen Flusses magnetisiert werden, so daß sie mittels der Kraft gegenseitig angezogen werden.
  3. Walzvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sie eine Mittelwalze (50), die drehbar an dem Rahmen (40, 41) gelagert und angrenzend an jede der beiden Hauptwalzen (36, 37) angeordnet ist, und mehrere Leitwalzen (48), die in von der Mittelwalze (50) entfernten Stellungen drehbar an dem Rahmen (40, 41) gelagert sind, aufweist, wobei das Werkstück (49) mittels der Leitwalzen (48) zwischen einer der beiden Hauptwalzen (36, 37) und der Mittelwalze (50) geführt ist und nachfolgend mittels der Leitwalzen (48) zwischen der anderen Hauptwalze und der Mittelwalze (50) geführt ist.
  4. Walzvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sie zwei Mittelwalzen (50a, 50b), die drehbar an dem Rahmen gelagert sind, wobei jede Mittelwalze angrenzend an beide Hauptwalzen (36, 37) angeordnet ist, und mehrere Leitwalzen (48), die in von den Mittelwalzen (50a, 50b) entfernten Stellungen drehbar an dem Rahmen (40, 41) gelagert sind, aufweist, wobei das Werkstück mittels der Leitwalzen (48) zwischen einer der beiden Hauptwalzen (36, 37) und den beiden Mittelwalzen geführt ist und dann nachfolgend zwischen der anderen Hauptwalze und den beiden Mittelwalzen geführt ist.
  5. Walzvorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß sie mehrere Hilfswalzen (51) aus magnetischem Werkstoff, die hintereinander zwischen den beiden Hauptwalzen (36, 37) angeordnet sind, mehrere Hilfsrahmen (53), die zwischen den beiden Hauptwalzen angeordnet sind und jeweils eine entsprechende Hilfswalze (51) drehbar lagern, mehrere, jeweils an einem entsprechenden Hilfsrahmen (53) angeordnete Magnetspulen (52) zum Magnetisieren der entsprechenden Hilfswalze (51) und mehrere Leitwalzen (48), die an von den Hilfswalzen (51) entfernten Stellen drehbar an dem Rahmen gelagert sind, aufweist, wobei das Werkstück (49) mittels der Leitwalzen (48) zwischen einer der beiden Hauptwalzen und einer der Hilfswalzen (51) geführt ist und dann mittels der Leitwalzen (48) zwischen jedem Paar von Hilfswalzen (51) geführt ist, bis es zwischen der anderen Hauptwalze und der angrenzenden Hilfswalze (51) hindurchtritt.
  6. Walzvorrichtung nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, daß die auf das Werkstück (49) ausgeübte Preßkraft gesteuert werden kann, indem der den Magnetspulen (46, 47) zugeführte elektrische Strom gesteuert wird.
EP19900300886 1989-02-15 1990-01-29 Magnetische Walzvorrichtung Expired - Lifetime EP0383450B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1035483A JPH081037B2 (ja) 1989-02-15 1989-02-15 磁気利用のロ−ル加圧装置
JP35483/89 1989-02-15

Publications (2)

Publication Number Publication Date
EP0383450A1 EP0383450A1 (de) 1990-08-22
EP0383450B1 true EP0383450B1 (de) 1993-10-13

Family

ID=12443000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900300886 Expired - Lifetime EP0383450B1 (de) 1989-02-15 1990-01-29 Magnetische Walzvorrichtung

Country Status (3)

Country Link
EP (1) EP0383450B1 (de)
JP (1) JPH081037B2 (de)
DE (1) DE69003834T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008045743B3 (de) 2008-09-04 2010-04-08 Ungerer GmbH & Co. KG Verfahren und Vorrichtung zur Verbesserung mechanischer Eigenschaften von magnetisch aktivierbaren Materialien
RU2518836C1 (ru) * 2012-10-24 2014-06-10 Общество с Ограниченной Ответственностью Научно-производственное предприятие "ИНЖМЕТ" Составной предварительно напряженный валок
JP2015148270A (ja) * 2014-02-06 2015-08-20 Ｂｅｌｌｍａｔｉｃ株式会社 磁気ロール装置
CN103850078A (zh) * 2014-04-01 2014-06-11 博路威机械江苏有限公司 一种高速双压区三辊轧光机
JP2015205261A (ja) * 2014-04-23 2015-11-19 Ｂｅｌｌｍａｔｉｃ株式会社 塗布システム

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4887110A (de) * 1972-02-25 1973-11-16
AT345632B (de) * 1976-11-18 1978-09-25 Voest Ag Vorrichtung zum richten von ferromagnetischen blechbaendern
DE3325385A1 (de) * 1983-07-14 1985-01-31 Kleinewefers Gmbh, 4150 Krefeld Druckbehandlungswalze
DE3404833A1 (de) * 1984-02-08 1985-08-14 Sulzer-Escher Wyss AG, Zürich Verfahren und vorrichtung zum walzen von metall-folien
JPH01153809A (ja) * 1987-12-10 1989-06-16 Mitsubishi Heavy Ind Ltd 加圧ロール装置

Also Published As

Publication number Publication date
JPH02216294A (ja) 1990-08-29
DE69003834D1 (de) 1993-11-18
JPH081037B2 (ja) 1996-01-10
DE69003834T2 (de) 1994-02-10
EP0383450A1 (de) 1990-08-22

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