EP1035063B1 - Spannvorrichtung für Wickelkern - Google Patents

Spannvorrichtung für Wickelkern Download PDF

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Publication number
EP1035063B1
EP1035063B1 EP99103923A EP99103923A EP1035063B1 EP 1035063 B1 EP1035063 B1 EP 1035063B1 EP 99103923 A EP99103923 A EP 99103923A EP 99103923 A EP99103923 A EP 99103923A EP 1035063 B1 EP1035063 B1 EP 1035063B1
Authority
EP
European Patent Office
Prior art keywords
core
rotors
annular ring
collar
inner face
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
EP99103923A
Other languages
English (en)
French (fr)
Other versions
EP1035063A1 (de
Inventor
Minoru Ueyama
Masaru Kawasaki
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.)
Fuji Univance Corp
Original Assignee
Fuji Tekko Co Ltd
Fuji Iron Works Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Tekko Co Ltd, Fuji Iron Works Co Ltd filed Critical Fuji Tekko Co Ltd
Priority to EP99103923A priority Critical patent/EP1035063B1/de
Priority to DE69923760T priority patent/DE69923760T2/de
Publication of EP1035063A1 publication Critical patent/EP1035063A1/de
Application granted granted Critical
Publication of EP1035063B1 publication Critical patent/EP1035063B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
    • B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
    • B65H75/246—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages expansion caused by relative rotation around the supporting spindle or core axis
    • B65H75/247—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages expansion caused by relative rotation around the supporting spindle or core axis using rollers or rods moving relative to a wedge or cam surface

Definitions

  • This invention relates to a chuck device for a winding core for use in a winding apparatus (slitter rewinder) for slitting a sheet web of a material such as paper, cloth, synthetic resin film, metal foil or the like in an optional breadth, followed by winding up, or an unwinding apparatus.
  • a winding apparatus shutter rewinder
  • a chuck device which comprises a collar disposed to be rotatable unitedly with a rotary drive shaft for winding by reason of a frictional coupling, etc. thereto and means for transmitting the rotation of the collar to a hollow winding core such as a paper tube externally inserted on the collar therearound, whereby the winding core attached can be rotated in one rotational direction in a restraining fashion.
  • a mechanically expansible bobbin comprising a central shaft, a longitudinally movable tube disposed about the shaft and radially displaceable elongated segments circumferentially spaced apart and longitudinally disposed about the tube.
  • the tube has a cam face corresponding to each elongated segment and follower wheels are provided to be engageable with the cam face in order to ensure radial displacement of the elongated segment in response to a longitudinal movement of the tube.
  • the radial expansion or contraction of the elongated segments enables the mounting or removal of a material roll.
  • a winding shaft having a hollow shaft body, gripping ledges and a pneumatic extension device for the ledges.
  • Resilient pressure pieces are disposed dispersedly over the outer face of the shaft body.
  • rollers As a transmission means for transmitting the rotation of the collar to the winding core, for example, means of rollers is known (JP Pat. First Publication 5-17055A).
  • the rollers are fitted in the outer periphery of the collar at a plurality of recessed portions thereof having a slanting bottom, so that they can be frictionally coupled to the inner face of the winding core when located in a shallow position of the slanting bottom.
  • the chuck device comprises, for example, as shown in Fig. 6, a collar proper 3 having a circumferential groove 6 on its outer periphery and an annular ring 5 fitted rotatably in the groove.
  • the collar proper is defined with a plurality of recessed portions 7 at both sides of the groove 6 so that the recesses 7 are circumferentially equidistantly spaced apart from each other and each have a bottom face slanted to a tangential direction in a manner that its one end side in a circumferential direction is shallow.
  • the annular ring 5 is formed with cutouts 4 that are circumferentially equidistantly positioned to conform to the recessed portions 7 and apertured each on the ring at 41 in a narrower width than inboard, and rollers 9 rolling on the slanted bottom 8 are inserted and fitted in the cutouts 4 to be capable of partly protruding from the opening 41.
  • the rollers 9 protrude from the opening 41 thereby to engage with the inner face of a winding core C.
  • the chuck device is further provided, on the annular ring 5 at its circumferentially equidistant positions, with a plurality of pins 120 for forcing and abuttingly supporting the inner face of the winding core C by means of spring means 11.
  • a hollow winding core C such as a paper tube
  • the collar body 3 is rotated in that condition
  • the collar 3 is rotated owing to the frictional resistance between the pins 120 and the inner face of the core C, without the annular ring 5 being rotated.
  • the rollers 9 move from a deep to a shallow bottom position of the recessed portions 7 and protrude from the openings 41 on the ring 5, thus strongly forcing abuttingly against the inner face of the core C to be frictionally coupled thereto.
  • the core C is revolved together with the collar body 3 through the rollers 9, and winding or unwinding is thus performed.
  • the forgoing chuck device equipped with the conventional forcing abuttment means including the pins 120 is defective because of its construction that the pins are biased by the spring to forcingly abut against the inner face of the winding core, thus being movable only linearly. That is to say, when the core will be externally inserted around the collar, the pins in a protruding state (immobile state) are likely to catch the edge of the core tube, whereas when the core will be removed out, the pins biting within the core are difficult to be retracted. If the easiness of insertion or removal of the core is favored by rounding or radiusing the top of the pins to make the slip smooth, another problem arises in that the engagement force to the core will be diminished.
  • this invention is designed for providing such a new improved forcing abutment means that facilitates the removal or attachment operation of a winding core and at the same time maintains the engagement force to the inner face of the core at a predetermined level.
  • the present invention relates to a chuck device for a winding core generally comprising a collar proper on which to externally insert the winding core at its inner hollow side; an annular ring fitted rotatably on the collar proper at its outer periphery; and rotation transmitting means, formed on the ring, for transmitting the rotation drive from the collar proper to the inner face of the core, the transmitting means engaging with the collar proper and moving radially outwardly, upon rotation drive, thereby rotating the core while forcingly supporting it from the inner face.
  • the chuck device is characterized in that a plurality of wheel-like rotors and forcing abutment means for energizing and forcing the rotors abuttingly against the inner face of the core are disposed on the outer periphery of the annular ring at a predetermined distance circumferentially spaced apart from each other, the rotors being rotatable only in an axial direction of the annular ring.
  • the wheel-like rotors are thus energized by means of the forcing abutment means against the inner face of the core and rotated only in the axial direction of the annular ring, namely an insertion or removal direction of the core.
  • the edge or inner face of the core is guided with the rotors to be fitted and inserted smoothly; during chucking the rotors are not rotated in the rotational direction of the annular ring; and when the core will be removed from the device, the rotors, even when bited within the core, roll off the core and guide the inner face of the core owing to the rotary mortion of the wheels, whereby it is possible to readily remove the core.
  • the chuck device 1 is generally constructed of a collar proper 3 fitted around a rotational drive shaft 2 in a manner that its rotation can be transmitted; and means for transmitting the rotation of the collar proper 3 to a winding core C such as a paper tube which is externally inserted onto the collar, the transmitting means being formed on the outer periphery of the collar 3, whereby when the winding core C is rotated in one rotational direction in a restraining manner, a sheet web W (cf. Fig. 5) slitted in an optional width can be wound up on the core.
  • the rotation of the drive shaft 2 is transmitted to the collar proper 3, for example, through friction means provided in the rotary drive shaft.
  • plural friction means are disposed at intervals of a desired distance in the axial direction of the shaft, as described below.
  • the aforementioned means for transmitting the rotation of the collar 3 to the core C is constructed as follows:
  • An annular ring 5 is fitted rotatably in a circumferential groove 6 defined in the outer periphery of the collar proper 3.
  • recessed portions 7 are formed at circumferentially equidistant positions (four positions in Fig. 1).
  • the recessed portions 7 are formed to be somewhat elongated in the circumferential direction and each of their bottom faces 8 is slanted in a manner that one end side of the bottom 8 in the circumferential direction is shallow relative to the tangential direction of the collar proper 3.
  • the difference in height of the slanting bottom face 8 varies depending upon the diameter of rollers 9, which are adapted to be received in the recessed portions 7, but is determined to be generally on the order of 1 to 4 mm. The rollers will be described below.
  • the annular ring 5 consists of, as shwon in Fig. 3A, two half-rings 51, which are coupled together while being fitted in the groove 6. In coupling, screws 53 are threaded into screw holes 52 formed on the half-rings 51 at both terminal faying faces thereof.
  • the annular ring 5 may be of a one-piece ring 51 (Fig. 3B). In that case, the annular ring 5 can be simply coupled to the collar proper 3 by press fitting in the groove 6, and it is more advantageous.
  • the annnular ring 5 is further formed with cutouts 4 at its circumferentially equidistant positions (four positions in Fig. 3A) to conform to the recessed portions 7 of the collar 3, the cutouts being apertured at 41 on the outer periphery of the ring in a narrower width than inboard.
  • a roller 9 is inserted and fitted into each of the cutouts 4 in a manner that the roller is capable of partially protruding from the opening 41 and thus detachably retained in place.
  • the rollers 9 fitted in the cutouts 4 are disposed on the collar proper 3 with both ends thereof fitted in the recessed portions 7 so as to revolve on the slanting bottom face 8. That is, when the annular ring 5 is rotated relatively to the collar proper 3, the respective rollers 9 fitted in the cutouts 4 are revolved simultaneously on the slanting bottom face 8.
  • the rollers 9 are initially (before a core is mounted) located at a deep position 8a on the slanting bottom face 8 and retained in place, so that they little or slightly protrude from the openings 41 of the cutouts 4, whereas when a core C is inserted, the rollers 9 are moved to a shallow position 8b to protrude outwardly from the openings 41 thereby to force the core C at its inner face.
  • the rollers 9 are frictionally coupled to the core C by reason of the forcing pressure.
  • the chuck device is further provided, on the annular ring 5, with rotatable forcing abutment means for supporting elastically or flexibly the core from its inner face, which is an essetial feature of this invention.
  • wheel-like rotors 12 and forcing abutment means for the wheel-like rotors are disposed on the annular ring 5 at circumferentially equidistant positions thereof, for example, in the vicinity of the cutouts 4.
  • the wheel-like rotors 12 are formed to be rotatable only in the axial direction of the annular ring 5 and simultanesouly to be capable of forcing abuttingly against the inner face of the core C by means of spring means 11 embedded within the ring 5. Thereby the insertion or removal operation of the core is facilitated and racing (idle running) of the annular ring 5 to the core C upon actuation of rotation is precluded.
  • the wheel-like rotor 12 assumes a bored short cylindrical form and is pivotally connected to the annular ring 5 through its central shaft 12a so as to be free rotatable. Since the central shaft 12a is disposed in parallel to the tangential direction of the annular ring 5, the rotors 12 are thereby rotatable only in the axial direction of the ring 5, namely in the insertion or withdrawal direction of the core C.
  • the shaft 12a of the wheel-like rotor 12 pivoted therearound is disposed, as shown in Figs. 2B and 2C, to be free-rotatable between an upper part of a sleeve 13 embedded in the annular ring 5 and a carrier 14 slidingly movable within the sleeve 13 and biased by means of the spring means 11.
  • a carrier 14 slidingly movable within the sleeve 13 and biased by means of the spring means 11.
  • the wheel-like rotors 12 are constructed to be energized toward the inner face of the core C and rotatable only in the axial direction of the annular ring 5, namely in the insertion or removal direction of the core C, with the result that when the core C will be inserted or removed, the edge or inner face of the core is guided with the rotors 12 to be inserted or removed smoothly whereas during chucking, the rotors 12 are not rotated relative to the rotation direction of the ring 5.
  • a desired engagement force to the inner face of the core can be readily attained.
  • the rotors 12 can be, upon removal of the core C, moved out of engagement with the biting portion to guide the inner face of the core by reason of the rotation, and consequently, the removal operation is extremely facilitated.
  • the chuck device 1 constructed as described above is usually used for a winding shaft in a winding apparatus.
  • a plurality of chuck devices 1 are installed onto a rotation drive shaft 2 axially at intervals of a predetermined distance around its circumference, as exemplified in Fig. 4A.
  • annular spacers S are interposed between respective chuck devices so as to be fitted in place to their collars 3 (cf. Figs.4A and 4B).
  • bearings 15 are provided at both side edges of the collar 3 on the rotation shaft 2 side.
  • the rotary drive shaft 2 is provided with frictional coupling means in order to transmit its rotation drive to the collar proper 3: That is, the rotary drive shaft 2 has a pressurized air passage 21 axially therethrough and formed, at circumferentially regular intervals (for example, an angle of 90°) around a circumference thereof per each chuck device, with through-holes 22 apertured from the admission passage 21 side to the outer peripheral face of the shaft 2. Every four through-holes 22 are provided at axially spaced intervals in the drive shaft 2 so as to be deviated by an angle of 45° every one collar 3 is mounted. In each of the through-holes 22, a cylindrical forcing member 23 having a semi-spherical top end is fitted to be slidingly movable and is attached with packings 24 at its circumferential face.
  • a cylindrical forcing member 23 having a semi-spherical top end is fitted to be slidingly movable and is attached with packings 24 at its circumferential face.
  • rollers 9 are located at a deep position 8a of the slanting bottom face 8 in the recessed portions 7, without projecting outwardly from the openings 41 or in only slightly projecting state (the solid lines in Fig. 5).
  • the rotors 12 are free rotatable in the withdrwal direction of the core C and move like a wheel, so that even if the rotors make inroads into the core by centrifugal force or the like, they can come off the bitten core by reason of the rotation. Moreover, the rotation also makes it possible to guide the rollers along the inner face of the core thereby to facilitate removal of the core.

Landscapes

  • Winding Of Webs (AREA)

Claims (2)

  1. Einspannvorrichtung für einen Wickelkern zur Nutzung bei einer Blattbahn mit einem eigentlichen Bund (3), um den der Wicklungskern (C) an seiner inneren hohlen Seite außen einzufügen ist, und durch den der Antrieb einer Drehwelle (2) an den Wicklungskern zu übertragen ist; einem Ring mit einem kreisförmigen Querschnitt (5), der drehbar um einen äußeren Umfang des eigentlichen Bunds gepasst ist; und an dem Ring mit einem kreisförmigen Querschnitt ausgebildete Drehübertragungseinrichtungen (9), zur Übertragung des Drehantriebs von dem eigentlichen Bund an die Innenfläche des Kerns, wobei die Übertragungseinrichtungen mit dem eigentlichen Bund in Eingriff kommen und sich radial nach außen bewegen, nach dem Drehantrieb, wobei sie somit den Kern drehen, während sie ihn von der Innenfläche drückend stützen, dadurch gekennzeichnet, dass eine Vielzahl von radartigen Drehzylindern (12, 12a) und Druckwiderlagereinrichtungen (11, 13, 14) in dem äußeren Umfang des Rings mit einem kreisförmigen Querschnitt (5), voneinander um einen vorbestimmten Abstand um den äußeren Umfang beabstandet, vorgesehen sind, um die radartigen Drehzylinder derart vorzuspannen und zu drücken, dass sie an die Innenfläche des Kerns (C) stoßen, wobei die Drehzylinder lediglich in der axialen Richtung des Rings mit einem kreisförmigen Querschnitt drehbar sind.
  2. Einspannvorrichtung für einen Wickelkern nach Anspruch 1, dadurch gekennzeichnet, dass jede der Druckwiderlagereinrichtungen eine Hülse (13), die in den Ring mit einem kreisförmigen Querschnitt (5) eingebettet ist, eine Federeinrichtung (11), und einen Drehzylinder-Träger (14) aufweist, der in der Hülse gleitbar beweglich ist und in der Lage ist, durch die Federeinrichtung vorgespannt zu werden; und, dass jeder der Drehzylinder (12) einen kurzen zylindrischen Körper mit einer Mittelwelle (12a) aufweist und jeder parallel zu einer tangentialen Richtung des Rings mit einem kreisförmigen Querschnitt (5), zwischen einem oberen Teil der Hülse (13) und dem Drehzylinder-Träger, angeordnet ist, so dass die Drehzylinder, wenn sie nach unten gedrückt werden, zusammen mit dem Träger einfahren können, wobei die Drehzylinder drehbar um die Mittelwelle (12a) gelagert sind.
EP99103923A 1999-03-05 1999-03-05 Spannvorrichtung für Wickelkern Expired - Lifetime EP1035063B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99103923A EP1035063B1 (de) 1999-03-05 1999-03-05 Spannvorrichtung für Wickelkern
DE69923760T DE69923760T2 (de) 1999-03-05 1999-03-05 Spannvorrichtung für Wickelkern

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99103923A EP1035063B1 (de) 1999-03-05 1999-03-05 Spannvorrichtung für Wickelkern

Publications (2)

Publication Number Publication Date
EP1035063A1 EP1035063A1 (de) 2000-09-13
EP1035063B1 true EP1035063B1 (de) 2005-02-16

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP99103923A Expired - Lifetime EP1035063B1 (de) 1999-03-05 1999-03-05 Spannvorrichtung für Wickelkern

Country Status (2)

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EP (1) EP1035063B1 (de)
DE (1) DE69923760T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107867580A (zh) * 2016-09-27 2018-04-03 东莞市雅康精密机械有限公司 分切机、滑差轴及滑差环
CN109019108A (zh) * 2018-08-06 2018-12-18 孙立强 一种pe卷膜用多功能卷取架

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823892A (en) * 1972-09-05 1974-07-16 Didde Glaser Inc Expandable roll core shaft unit
JPS6387460A (ja) * 1986-09-30 1988-04-18 Katsuji Suzuki フイルム等の巻取り軸
JPH0733194B2 (ja) * 1991-07-10 1995-04-12 株式会社セイワ 巻芯支持装置
DE9113939U1 (de) * 1991-11-08 1992-01-02 Deublin Gerätebau GmbH, 6234 Hattersheim Wickelwelle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107867580A (zh) * 2016-09-27 2018-04-03 东莞市雅康精密机械有限公司 分切机、滑差轴及滑差环
CN109019108A (zh) * 2018-08-06 2018-12-18 孙立强 一种pe卷膜用多功能卷取架

Also Published As

Publication number Publication date
EP1035063A1 (de) 2000-09-13
DE69923760T2 (de) 2006-01-05
DE69923760D1 (de) 2005-03-24

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