EP1955971B1 - Spannvorrichtung für eine Rotationsverbindung einer Welle mit einer Hülse mit zylindrischer Innenwandung - Google Patents

Spannvorrichtung für eine Rotationsverbindung einer Welle mit einer Hülse mit zylindrischer Innenwandung Download PDF

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Publication number
EP1955971B1
EP1955971B1 EP07002721A EP07002721A EP1955971B1 EP 1955971 B1 EP1955971 B1 EP 1955971B1 EP 07002721 A EP07002721 A EP 07002721A EP 07002721 A EP07002721 A EP 07002721A EP 1955971 B1 EP1955971 B1 EP 1955971B1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamping device
bodies
cage
sleeve
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.)
Not-in-force
Application number
EP07002721A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1955971A1 (de
Inventor
Jerzy Kwiatkowski
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.)
Jurmet Sp Z Oo
Original Assignee
Jurmet Sp Z Oo
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 Jurmet Sp Z Oo filed Critical Jurmet Sp Z Oo
Priority to AT07002721T priority Critical patent/ATE448167T1/de
Priority to EP07002721A priority patent/EP1955971B1/de
Priority to DE502007001959T priority patent/DE502007001959D1/de
Priority to PL07002721T priority patent/PL1955971T3/pl
Publication of EP1955971A1 publication Critical patent/EP1955971A1/de
Application granted granted Critical
Publication of EP1955971B1 publication Critical patent/EP1955971B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • 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
    • B65H75/249—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages expansion caused by actuator movable in direction perpendicular to or about the axis

Definitions

  • the invention relates to a clamping device for a rotational connection of a driven shaft with a sleeve surrounding the shaft with cylindrical inner wall, with circumferentially distributed for clamping between the shaft outer side and sleeve inner wall clamping bodies, which are located in a clamp body cage.
  • Such devices are known as sprag clutches (see. DE 41 03 136 A1 and GB 1 586 539 A ).
  • a clamping device of the type mentioned in which the clamping body are slidably mounted on a substantially tangential to the shaft outer side, rigidly connected to the cage guide pin and depending on the position on the guide pin against the sleeve inner wall in a clamping or non-clamping position are located within the sprag cage a with respect to this rotatable drive ring is arranged, which is connected to the sprags so that upon rotation of the drive ring relative to the sprag cage all clamp body can be moved to the guide pin.
  • connection between the driving ring and sprags consists of individual connecting pins.
  • the coupling connection can be rigid or force-coupled. Also correspondingly strong magnetic clutches, friction clutches and the like are possible.
  • the clamping body can be pressed by spring force into an end position, wherein this spring force is preferably caused by a pushed on the guide pin cylinder spring. It is essential that the spring force presses the clamping body in a clamping position, so that disengagement of the clamping body from the clamping position takes place against the spring force.
  • the sprag cage comprises individual spaced apart segments interconnected by the guide pins. There are free spaces between the segments, in each of which one or more clamping bodies are arranged.
  • a special feature is preferably the shape of the clamping body.
  • the clamping body can be designed, for example, as a barrel body or as an ellipsoid.
  • the barrel body can be a circle cluster or a parabolic one Be tons.
  • a circle body is characterized in that the generator is a circular arc, while in a parabolic barrel body the generator is a parabola. Also a spherical shape is possible.
  • the outer surface of the clamping body is increased friction occupied and / or structured.
  • the clamping body cage is equipped with 4 to 10, preferably 6, clamping bodies.
  • each free space may contain a single clamp body or a clamp body pair.
  • three or more clamp body can be installed side by side in a free space with a corresponding number of guide pins.
  • an arrangement is selected with an even number of sprags in the circumferentially adjacent within the cage in the circumferential direction adjacent clamping body axially offset from each other in the free spaces.
  • the driving ring with the clamp bodies equipped with clamping body cage is rotatable or detachable connected to a drive shaft.
  • the invention also relates to an ensemble consisting of a cardboard or plastic sleeve, which is coupled via the tensioning device to the drive shaft.
  • a tensioning device 100 shown in the figures serves to connect a sleeve 7 with a rotatable shaft 8 (shown here in a transparent manner), wherein the. Clamping device 100 should allow easy release of the shaft after completion of a winding operation of the sleeve 7.
  • the sleeve 7 is wrapped, for example, with a plastic film, a textile web, a metal foil or with a paper web outside multilayer. How out FIG. 2 shows, the sleeve 7 has an inner diameter Dg, while the shaft has an outer diameter Dw. The difference dg - dw must be bridged by the clamping device 100.
  • the tensioning device 100 comprises a clamping body cage 1, which is subdivided into individual segments 10, which are interconnected by a ring torus 14. The latter sits stretched over a bearing ring 15 and can be bent and pulled off if necessary, so that the clamping body cage 1 can be deducted from the shaft 8.
  • the segments 10 have seen in the axial direction of the shaft has an approximately trapezoidal shape, wherein the curved outer sides 18 of the segments 10 within an (imaginary) circle lie whose diameter is slightly smaller than the inner diameter Dg of the sleeve 7. Between the individual segments 10 are free spaces 19 left. The free spaces 19 are each bounded by flanks 20 of the segments 10. In the exemplary embodiment, six segments 10 and six free spaces 19 essentially form the clamp body cage 1.
  • the segments 10 are drilled and each have an access hole 16 which starts on the outer side 18 of the segment 10, runs in a tangential direction within the segment 10 and terminates at an outlet opening 21 in the region of the flank 20.
  • an inlet opening 22 is arranged on the opposite flank of the adjacent segment, to which a further receiving bore 17 adjoins.
  • a metal guide pin 3 is firmly embedded, for example, set by a thread.
  • the guide pin 3 bridges exposed, is pushed on a part of the length of the guide pin 3, a clamping body 2.
  • the clamp body 2 can also be designed as a parabolic barrel body, as an ellipsoid or as a sphere.
  • the round outer walls of the clamp body 3 are covered with silicone rings 23, so that the outside has a high coefficient of friction. Other friction-increasing structures or coverings are possible.
  • the clamping body 2 are arranged displaceably on the guide pin 3 within the free space 19.
  • a spring force is exerted, so that the clamping body 2 is pressed into an end position.
  • the outside of the clamp body 2 presses against the sleeve inner wall 11 and clamps the clamp body cage 1 against the sleeve. 7
  • the driver ring 4 is connected via a quasi-radially aligned driver pin 5, the tip of which penetrates from the side into the clamp body 2, with this firmly connected, so that in an adjustment of the clamp body - cage 1 relative to the driver ring 4, an adjustment of the clamp body 2 takes place with a displacement against the spring force in a non-clamping position.
  • FIG. 3 a total of six clamping body 2 are provided, which are arranged on tangential or fast tangential ("substantially tangential") extending guide pin 3 slidably.
  • the clamping bodies are seen in the circumferential direction from one to the other axially offset by about half a flank width. This results in a precise balancing and force distribution of the pressure forces against the sleeve. Also, the sleeve is well secured against displacement in the axial direction as well as against relative rotation to the shaft. Another arrangement is possible for example by a pair of adjacently arranged clamping body in a free space. Also each one-piece, but guided over two parallel guide pin clamp body are technically feasible and considered to fall under the invention.
  • a shaft 8 is equipped with at least two spaced clamping devices 100.
  • the clamp body cage 1 By rotating the driver ring 4 with the clamp body cage 1 held the clamp body 2 are moved to the guide pin 3 against the spring force of the cylinder spring 6. With this they are disengaged from the clamping position.
  • the diameter of the clamping body cage is thus limited to the diameter of the outer side of the segments 10.
  • the clamping body cage or the clamping device 100 can be inserted into the interior of the sleeve. Once the drive ring is released, the clamp body 2 move back into the opposite positions and thus in the clamping positions due to the force exerted on them spring force.
  • a solution of the clamping device is done by re-twisting the driving ring 4 in the corresponding opposite direction for releasing the clamping body. 2

Landscapes

  • Making Paper Articles (AREA)
  • Automatic Assembly (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Processing Of Terminals (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Clamps And Clips (AREA)
EP07002721A 2007-02-08 2007-02-08 Spannvorrichtung für eine Rotationsverbindung einer Welle mit einer Hülse mit zylindrischer Innenwandung Not-in-force EP1955971B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT07002721T ATE448167T1 (de) 2007-02-08 2007-02-08 Spannvorrichtung für eine rotationsverbindung einer welle mit einer hülse mit zylindrischer innenwandung
EP07002721A EP1955971B1 (de) 2007-02-08 2007-02-08 Spannvorrichtung für eine Rotationsverbindung einer Welle mit einer Hülse mit zylindrischer Innenwandung
DE502007001959T DE502007001959D1 (de) 2007-02-08 2007-02-08 Spannvorrichtung für eine Rotationsverbindung einer Welle mit einer Hülse mit zylindrischer Innenwandung
PL07002721T PL1955971T3 (pl) 2007-02-08 2007-02-08 Urządzenie dociskowe do obrotowego połączenia wału z tuleją o cylindrycznej ścianie wewnętrznej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07002721A EP1955971B1 (de) 2007-02-08 2007-02-08 Spannvorrichtung für eine Rotationsverbindung einer Welle mit einer Hülse mit zylindrischer Innenwandung

Publications (2)

Publication Number Publication Date
EP1955971A1 EP1955971A1 (de) 2008-08-13
EP1955971B1 true EP1955971B1 (de) 2009-11-11

Family

ID=38191373

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07002721A Not-in-force EP1955971B1 (de) 2007-02-08 2007-02-08 Spannvorrichtung für eine Rotationsverbindung einer Welle mit einer Hülse mit zylindrischer Innenwandung

Country Status (4)

Country Link
EP (1) EP1955971B1 (pl)
AT (1) ATE448167T1 (pl)
DE (1) DE502007001959D1 (pl)
PL (1) PL1955971T3 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102294664B (zh) * 2011-06-30 2013-04-17 西北工业大学 一种用于内撑式套筒的夹具

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4143829A (en) * 1978-02-27 1979-03-13 Martin Automatic, Inc. Core chuck
GB1586539A (en) * 1978-04-17 1981-03-18 Plevin & Walker Ltd Core support
US4496114A (en) * 1981-07-22 1985-01-29 Hiroshi Kataoka Winding shaft provided on surface with spool fixing rollers
DE8909225U1 (de) * 1989-07-31 1990-01-11 Özdemir, Aysun, 3000 Hannover Friktionswickelwelle
DE4103136A1 (de) 1991-02-02 1992-08-13 Schaeffler Waelzlager Kg Klemmkoerperkupplung

Also Published As

Publication number Publication date
ATE448167T1 (de) 2009-11-15
EP1955971A1 (de) 2008-08-13
DE502007001959D1 (de) 2009-12-24
PL1955971T3 (pl) 2010-05-31

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