EP0531285B1 - Tete de serrage pour cylindres de bobinage - Google Patents

Tete de serrage pour cylindres de bobinage Download PDF

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Publication number
EP0531285B1
EP0531285B1 EP90909709A EP90909709A EP0531285B1 EP 0531285 B1 EP0531285 B1 EP 0531285B1 EP 90909709 A EP90909709 A EP 90909709A EP 90909709 A EP90909709 A EP 90909709A EP 0531285 B1 EP0531285 B1 EP 0531285B1
Authority
EP
European Patent Office
Prior art keywords
clamping
clamping head
pieces
shank
clamping pieces
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
EP90909709A
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German (de)
English (en)
Other versions
EP0531285A1 (fr
Inventor
Jürgen TREUTNER
Walter Dörfel
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.)
Beloit Technologies Inc
Original Assignee
Beloit Technologies Inc
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Filing date
Publication date
Application filed by Beloit Technologies Inc filed Critical Beloit Technologies Inc
Publication of EP0531285A1 publication Critical patent/EP0531285A1/fr
Application granted granted Critical
Publication of EP0531285B1 publication Critical patent/EP0531285B1/fr
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

Definitions

  • the invention relates to a clamping head for winding tubes of the type reproduced in the preamble of claim 1.
  • Such a clamping head is known from DE 1 574 438 B. It is used for winding web-like material, such as paper webs, film webs and the like. Like. Used on winding cores and also for unwinding such winding cores, with a tensioning head being clamped in a central, essentially circular recess at each end of the core, in order to transmit the torque required for winding or braked unwinding to the winding core or from the winding core.
  • a hexagonal clamping head shaft is provided, which is surrounded by segment-shaped clamping pieces. With their radially inner surfaces (contact surfaces), the clamping pieces rest flat on the six outer surfaces of the clamping head as long as they are in their (not spread) rest position.
  • the radial outer surfaces of the clamping pieces which will later be brought into contact in the outer recess of the winding tube, form a circumference in the rest position which is normally less than the clear dimension of the recess at the front end of the winding tube.
  • the clamping pieces and the clamping head shaft can be turned relative to each other. As a result, the clamping pieces can be pressed uniformly radially outward over their entire length, as seen in the axial direction of the clamping head, so that their outer surfaces in the recess of the winding tube expand non-positively. As the web winds up, the roll diameter and thus the torque to be transmitted increases. This automatically leads to an increased spreading of the clamping pieces.
  • a similar clamping head as from DE 1 574 438 B is known from DE 29 10 114 A1, the difference being that in the latter document the clamping pieces with their radially inner surfaces do not lie flat against the outer surfaces of the clamping head shaft, but rather one have circular cylindrical inner contour, which is provided with axially extending grooves and wherein elongated pressure pieces fitted into the grooves protrude radially inward with a convexly curved surface and this surface lies linearly against the six outer surfaces of the clamping head shank.
  • the removal of the winding sleeves from the clamping head is easier with another clamping head type, as described, inter alia, in DE 28 15 310 C, than with the clamping heads of the type mentioned at the outset, because in this other known clamping head type one instead of a twist Axial displacement between the clamping head shaft and the clamping pieces is carried out in order to achieve the expansion or contraction of the clamping pieces.
  • the sliding surfaces between the clamping head shaft and clamping head pieces are wedge-shaped.
  • An axial stop connected to the clamping pieces which comes to rest on the end face of the sleeve when the clamping pieces are not yet expanded, enables the transmission of a force acting in the axial direction, through which the clamping pieces slide along the clamping head shaft and thereby spread out in the recess at the end of the winding tube.
  • the constant expansion path over the entire clamping length depends on the size of the insertion force applied in the axial direction.
  • a further clamping head of the type mentioned in which the clamping head shaft has not only a polygonal clamping zone with a constant cross-section seen in the axial direction, but also a frustoconical clamping zone with a circular cross-section tapering in the direction of insertion.
  • the frustoconical clamping zone is in front of the polygonal, constant cross-section clamping zone when viewed in the direction of insertion.
  • the two clamping zones arranged one behind the other have the purpose that one of the two clamping zones still remains effective when a force acting axially on the clamping head or a force acting on the clamping head in the circumferential direction is relieved or completely eliminated.
  • This known geometry of the clamping zones means that the radial clamping path of the clamping pieces, which can be generated by the frustoconical clamping zone, with the maximum clamping path that can be realized by the constant cross-section, polygonal clamping zone, must be exactly the same size; this is the only way to ensure that one of the two clamping zones can also transmit the clamping forces alone, ie without the participation of the other clamping zone.
  • the invention is therefore based on the object of providing a tensioning head of the type mentioned at the outset, in which the removal from the winding tube is facilitated when the torque-dependent expansion is obtained.
  • An inventive clamping head has u. a. the advantage that the radial expansion path is torque-dependent, so that damage to the winding cores, as well as slipping of the winding cores is avoided, and that the pulling off of the clamping head from the winding core is nevertheless facilitated.
  • the advantages of the two types of clamping head mentioned at the outset are thus combined with one another without the mutual disadvantages occurring.
  • the advantage is also achieved that the relative position between the winding tube and the clamping head shaft in the axial direction is always exactly defined, because the expansion path is always composed of a displacement-related and a rotation-related portion, the displacement-related portion always automatically has priority because the clamping head must first be pushed in its axial direction before the twisting can begin.
  • the relative position between the clamping pieces (and thus also the winding tube) and the clamping head shank in the clamping heads of the second type is necessarily variable and undefined. However, this is usually undesirable.
  • a comparatively low frictional resistance between the clamping head shaft and the clamping pieces during expansion or contraction is achieved by the features of claim 5.
  • particularly precisely definable relative positions between the clamping head shank and the clamping pieces are thereby achieved.
  • a certain sliding movement can also take place. The rolling movement can be realized in a particularly simple manner by the features of claim 6.
  • a clamping head for winding cores 10 generally designated 100 in the figures, consists of a clamping head shaft 20, a sleeve-shaped part serving as clamping head housing 30, and clamping pieces 40.
  • the winding cores 10 shown in the figures consist, as can be seen from FIGS. 1a / b, of circular cylindrical tubes with front ends 11 and a concentric recess 12 accessible from the front, into which the clamping head 100 can be inserted in the axial direction.
  • Tubular winding sleeves are the most common, but in principle it is also possible to use closed cylindrical cylindrical bodies with corresponding recesses in the ends as winding sleeves.
  • the clamping head shaft 20 is shaped as a truncated pyramid, the base 21 of which is fastened to a plate 22.
  • the plate 22 or the clamping head shank 20 itself are rotatably mounted on support arms in a manner known per se and may be driven in the direction of rotation about the axial direction B.
  • the clamping head shaft is designed as a cantilever shaft, that is, it is supported on one side. With regard to its base 21 and its free end 23, the clamping head housing 30 is rotatably mounted. There is also one at its free end Restoring device 50 to be described later.
  • the six clamping surfaces 24 of the clamping head shank 20 are slightly inclined to the axial direction B and are straight in the direction of extension corresponding to the axial direction; on the other hand, the clamping surfaces 24 are concavely curved in the direction C of the clamping head circumference (see FIGS. 1c and 5), this concave curvature at the narrow end (free end 23) of the truncated pyramid being most pronounced and steadily decreasing to zero at the base 21. This can be seen particularly clearly from FIG. 5.
  • the six clamping pieces 40 evenly distributed on the circumference consist of pressure pieces 41 and sliding pieces 42, which are connected to one another in a manner known per se.
  • springs 44 are guided which (as can be seen from FIG. 1b) are designed as open rings and serve as return springs acting in the contraction sense.
  • the sliders 42 are, as shown in Fig. 1a, rectilinear in the axial direction and, as can be seen from Fig. 5 and 6, convex in the transverse extent (circumferential direction C), so that their contact surface 45 with which they on the associated clamping surface 24 of the clamping head shaft 20 rest, are circular cylindrical in shape.
  • the respective contact between the clamping piece and clamping head shaft takes place along a line of contact 46 (see FIGS. 5 and 6) - regardless of the size of the angle of rotation between the clamping head shaft and clamping piece.
  • the clamping head housing 30 has a cylindrical sliding surface 31 at the base end of the clamping head shaft and a cylindrical sliding surface 32 at the free end of the clamping head.
  • a flange-like, projecting stop 33 is connected in one piece to the clamping head housing or fastened to it. It forms a first end stop 34 for the front end 11 of the winding tube 10 and a second end stop 35 for the axial movement relative to the clamping head shaft 20, which interacts with the plate 22 (see FIG. 2a).
  • the clamping head housing 30 is provided with elongated openings 36, within which the clamping pieces 40 are received and arranged to be radially displaceable. End stops 37 limit the maximum possible expansion path of the clamping pieces 40.
  • the reset device 50 is located in a conically tapered cover 51 which is connected to the clamping head housing 30, for. B. is rotatably connected by screws, not shown in the drawing.
  • an annular or annular segment-shaped groove 52 is provided, in which two coil springs 53, a lid-fixed, i.e.. H. thus also stop 54 fixed to the housing and a driver 55 in the form of an annular segment.
  • the driver 55 is non-rotatably attached to the free end of the clamping head shaft 20 via an arm 56 connected to it.
  • the driver 55 and the arm 56 are shaped so that they can be rotated together within the cover 51 and with respect to the clamping head housing 30 against the restoring action of the springs 53.
  • the springs 53 hold the clamping head housing 30 and the clamping head shaft 20 in a neutral rotational position with respect to one another, as long as the clamping head is outside the winding sleeve or the rotation between the clamping head shaft and the clamping head housing has not yet taken place, which is the case in the working positions according to FIGS. 1 and 2 .
  • one of the springs 53 is tensioned and the other spring 53 is relaxed or tensioned in the opposite direction. This can be seen from FIGS. 3c and 4c.
  • the energy now stored in the compressed or expanded spring is only released again when the winding tube is removed from the clamping head.

Landscapes

  • Winding Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

Tête de serrage pour cylindres de bobinage sur lesquels s'enroulent ou se déroulent des matières en feuilles continues, telles que des feuilles continues de papier ou analogue, comportant une broche polygonale (20), et des pièces de serrage (40) appliquées sur cette broche, ces pièces (40) et la broche (20) étant mobiles en rotation l'une par rapport à l'autre, cette rotation produisant un déplacement radial (trajet d'expansion/contraction) de la pièce de serrage (40). Lorsqu'on obtient, pour cette tête, un écartement fonction du couple de rotation, le retrait de la tête du cylindre est facilité du fait que la broche (20) est configurée en forme de tronc de pyramide, les pièces de serrage (40) et la broche (20) sont déplaçables l'une par rapport à l'autre en direction axiale (B), les pièces des serrage (40) sont munies d'une butée de fin de course (34) agissant en direction axiale (B), pour le cylindre de bobinage, et d'une butée de fin de course (35) fixée sur la broche et agissant en direction axiale, ou sont montées coopérantes avec ces butées, et, le parcours de serrage (trajet d'expansion/contraction) des pièces de serrage (40) se compose d'une portion déterminée par la rotation et d'une portion déterminée par le déplacement, de telle façon que la (seconde) butée (35) parvienne dans sa position axiale de fin de course, avant que la fin du parcours de serrage soit atteinte.

Claims (10)

  1. Tête de serrage pour mandrin d'enroulement, servant à enrouler ou à dérouler un produit en bande, comme des bandes de papier ou similaires, comportant
    - une broche (20) de tête de serrage polygonale, et
    - des pièces de serrage (40), placées au contact de cette broche de tête de serrage,
       pour laquelle les pièces de serrage (40) et la broche (20) de tête de serrage peuvent tourner les unes par rapport à l'autre et pour laquelle cette rotation provoque un déplacement radial (course d'expansion et de contraction) des pièces de serrage (40), caractérisée
    - en ce que la broche (20) de tête de serrage à une forme de tronc de pyramide,
    - en ce que les pièces de serrage (40) et la broche (20) de tête de serrage peuvent coulisser les unes par rapport à l'autre dans la direction (B) de l'axe,
    - en ce que les pièces de serrage (40) sont chacune équipées, d'une butée finale (34) et (35) agissant dans la direction (B) de l'axe, pour le mandrin enrouleur (10) d'une part et pour la broche (20) de tête de serrage, d'autre part, ou sont reliées avec elles de façon active, et
    - en ce que la course de serrage (course d'expansion et de contraction) des pièces de serrage (40) est constituée d'une partie déterminée par une rotation et d'une partie déterminée par une translation, de telle façon que la (deuxième) butée finale (35), arrive dans sa position axiale finale, avant que soit atteinte la fin de la course de serrage.
  2. Tête de serrage pour mandrin d'enroulement, servant à enrouler et à dérouler un produit en bande, comme des bandes de papier ou similaires, comportant
    - une broche (20) de tête de serrage polygonale,
    - des pièces de serrage (40), placées au contact de cette broche de tête de serrage,
       pour laquelle les pièces de serrage (40) et la broche (20) de tête de serrage peuvent tourner les unes par rapport à l'autre et pour laquelle cette rotation provoque un déplacement radial (course d'expansion et de contraction) des pièces de serrage (40), caractérisée
    - en ce que la broche (20) de tête de serrage à une forme de tronc de pyramide,
    - en ce que les pièces de serrage (40) et la broche (20) de tête de serrage peuvent coulisser les unes par rapport à l'autre dans la direction (B) de l'axe,
    - en ce que les pièces de serrage (40) sont chacune équipées, d'une butée finale (34) et (35) agissant dans la direction (B) de l'axe, pour le mandrin enrouleur (10) d'une part et pour la broche (20) de tête de serrage, d'autre part, ou sont reliées avec elles de façon active, et
    - en ce que les surfaces latérales (surfaces de serrage 24) de la broche (20) de tête de serrage, ou les surfaces de contact (45) des pièces de serrage (40), venant au contact contre ces surfaces de serrage, ou les deux, présentent une courbure dans la direction (C) de la périphérie de la tête de serrage et en ce que le dimensionnement de cette courbure varie, de façon essentiellement continue, le long de la direction (B) de l'axe, de telle façon qu'une rotation entre la broche (20) de tête de serrage et les pièces de serrage (40) provoque une course d'expansion et de contraction de même grandeur le long de la longueur totale des pièces de serrage (40), dirigée dans le sens (B) de l'axe.
  3. Tête de serrage suivant la revendication 1, caractérisée en ce que les surfaces latérales (surfaces de serrage 24) de la broche (20) de tête de serrage, ou les surfaces de contact (45) des pièces de serrage (40), ou les deux, présentent une courbure dans la direction (C) de la périphérie de la tête de serrage et en ce que le dimensionnement de cette courbure varie, de façon essentiellement continue, le long de la direction (B) de l'axe, de telle façon qu'une rotation entre la broche (20) de tête de serrage et les pièces de serrage (40) provoque une course d'expansion et de contraction de même grandeur le long de la longueur totale des pièces de serrage (40), dirigée dans le sens (B) de l'axe.
  4. Tête de serrage suivant la revendication 2 ou la revendication 3, caractérisée en ce que les surfaces de serrage (24), à l'extrémité la plus épaisse (base 21) de la broche (20) de tête de serrage, sont droites, et, à l'extrémité la plus fine (extrémité libre 23) présentent une courbure concave, ou bien, à l'extrémité la plus épaisse, présentent une courbure convexe et sont droites à l'extrémité la plus fine.
  5. Tête de serrage suivant l'une quelconque des revendications 1 à 4, caractérisée en ce que les surfaces latérales (surfaces de serrage 24) de la broche (20) de tête de serrage, ou les surfaces de contact (45) des pièces de serrage (40), ou les deux, présentent une courbure dans la direction (C) de la périphérie de la tête de serrage de telle façon que le contact réciproque entre la broche (20) de tête de serrage et les différentes pièces de serrage (40) soit réalisé essentiellement de façon linéaire et permette un mouvement de roulement, au moins en partie, entre la broche de tête de serrage et les différentes pièces de serrage.
  6. Tête de serrage suivant la revendication 5, caractérisée en ce que les surfaces de contact (45) des pièces de serrage (40) ont une forme de cylindre de révolution.
  7. Tête de serrage suivant l'une quelconque des revendications 1 à 6, caractérisée par au moins un ressort (53) pouvant être mis en serrage par rotation entre la broche (20) de tête de serrage et les pièces de serrage (40), pour renverser la rotation après le desserrage du mandrin enrouleur (10).
  8. Tête de serrage suivant la revendication 7, caractérisée en ce que le ressort (53), au moins en un exemplaire, est un ressort en spirale, disposé sensiblement suivant la direction périphérique (C) de la tête de serrage (100).
  9. Tête de serrage suivant la revendication 7 ou la revendication 8, caractérisée en ce que le ressort (53), au moins en un exemplaire, s'appuie, d'une part, sur une partie de boîtier (boîtier 30 de la tête de serrage), sur une butée (54) solidaire du boîtier, en pouvant tourner par rapport à à la broche (20) de tête de serrage en même temps que les pièces de serrage (40), et en pouvant, en particulier, également coulisser, et en ce qu'il s'appuie, d'autre part, sur un tenon d'entraînement (55), solidaire de la broche (20) de tête de serrage.
  10. Tête de serrage suivant l'une quelconque des revendications 1 à 9, caractérisée par une partie de boîtier (boîtier 30 de la tête de serrage), recevant les pièces de serrage (40) dans des percements (36) et pouvant se déplacer en même temps que les pièces de serrage (40), au moins dans une direction, par rapport à la broche de tête de serrage.
EP90909709A 1990-05-26 1990-06-21 Tete de serrage pour cylindres de bobinage Expired - Lifetime EP0531285B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4017007 1990-05-26
DE4017007 1990-05-26

Publications (2)

Publication Number Publication Date
EP0531285A1 EP0531285A1 (fr) 1993-03-17
EP0531285B1 true EP0531285B1 (fr) 1994-02-16

Family

ID=6407260

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90909709A Expired - Lifetime EP0531285B1 (fr) 1990-05-26 1990-06-21 Tete de serrage pour cylindres de bobinage

Country Status (7)

Country Link
EP (1) EP0531285B1 (fr)
JP (1) JPH0729710B2 (fr)
BR (1) BR9008024A (fr)
CA (1) CA2083815C (fr)
DE (1) DE59004646D1 (fr)
FI (1) FI101214B (fr)
WO (1) WO1991018819A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI100002B (fi) * 1994-06-23 1997-07-15 Valmet Paper Machinery Inc Kiinnityspää rullauksessa käytettäviä hylsyjä varten
US6905686B1 (en) 1997-12-02 2005-06-14 Neuralab Limited Active immunization for treatment of alzheimer's disease
US6750324B1 (en) 1997-12-02 2004-06-15 Neuralab Limited Humanized and chimeric N-terminal amyloid beta-antibodies
DE102005021077A1 (de) * 2005-05-06 2006-11-09 Kampf Gmbh & Co Maschinenfabrik Spannkopf für eine Rollenschneid- und Wickelmaschine
WO2013128479A1 (fr) * 2012-02-27 2013-09-06 I.E.S. International Expanding Shafts S.R.L Arbre extensible pour supporter des bobines et des dispositifs similaires
TR201902834T4 (tr) * 2014-08-12 2019-03-21 I E S Int Expanding Shafts S R L Bilhassa aktarma bobinleri için sürtünme millerinin sürtünme halkası.
CN112875368B (zh) * 2021-01-27 2023-05-09 重庆望变电气（集团）股份有限公司 硅钢冷涂后锥度张力收卷工艺

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO133832C (fr) * 1966-10-13 1976-07-07 Sonoco Products Co
DE2815310C2 (de) * 1978-04-08 1982-06-16 Jagenberg-Werke AG, 4000 Düsseldorf Spannkopf für Wickelhülsen
DE2910114C2 (de) * 1979-03-15 1983-04-21 A. Ahlström Development GmbH, 7315 Weilheim Spannkopf für die Kernrohre von Wickeln aus Papier, Kunststoffolien u.dgl.
DE3700472A1 (de) * 1987-01-09 1988-07-21 Goebel Gmbh Maschf Expansions-spannkopf

Also Published As

Publication number Publication date
DE59004646D1 (de) 1994-03-24
CA2083815C (fr) 1996-04-23
FI101214B1 (fi) 1998-05-15
EP0531285A1 (fr) 1993-03-17
JPH05506634A (ja) 1993-09-30
BR9008024A (pt) 1993-07-13
FI925356A (fi) 1992-11-25
FI925356A0 (fi) 1992-11-25
CA2083815A1 (fr) 1991-11-27
FI101214B (fi) 1998-05-15
WO1991018819A1 (fr) 1991-12-12
JPH0729710B2 (ja) 1995-04-05

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