EP0270826B1 - Hülsenspannsystem für einen Spulendorn - Google Patents

Hülsenspannsystem für einen Spulendorn Download PDF

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Publication number
EP0270826B1
EP0270826B1 EP87116079A EP87116079A EP0270826B1 EP 0270826 B1 EP0270826 B1 EP 0270826B1 EP 87116079 A EP87116079 A EP 87116079A EP 87116079 A EP87116079 A EP 87116079A EP 0270826 B1 EP0270826 B1 EP 0270826B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
tube
elements
stop
spring
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
EP87116079A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0270826A1 (de
Inventor
Heinz Mutter
Ruedi Schneeberger
Erwin Holbein
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.)
Maschinenfabrik Rieter AG
Original Assignee
Maschinenfabrik Rieter AG
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 Maschinenfabrik Rieter AG filed Critical Maschinenfabrik Rieter AG
Publication of EP0270826A1 publication Critical patent/EP0270826A1/de
Application granted granted Critical
Publication of EP0270826B1 publication Critical patent/EP0270826B1/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
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/40—Arrangements for rotating packages
    • B65H54/54—Arrangements for supporting cores or formers at winding stations; Securing cores or formers to driving members
    • B65H54/543—Securing cores or holders to supporting or driving members, e.g. collapsible mandrels
    • 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
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a sleeve tensioning system for a spool, which is used for winding synthetic filament yarns.
  • the invention is concerned with the generation of the clamping forces, which hold a sleeve or a pack against the mandrel during the coil build-up via the sleeve clamping elements.
  • Bobbins for winding synthetic filament yarns are known, see, for example, US Pat. No. 4,336,912; 4460133; 3030039; 4458850. Such mandrels are built into a winding machine for use, being mounted in a floating manner for rotation about their own longitudinal axis, see for example US Pat. No. 4,298,171; 4014476, European Patent No. 73930, and European Patent application No. 161385.
  • EP-A-217276 shows a new mandrel construction, according to which the sleeve-bearing part and the bearing part are formed from one piece.
  • EP-A-219752 describes a sleeve clamping system in which the clamping forces are generated by bodies made of porous elastomers.
  • US PS 4232835 shows a sleeve clamping system, according to which the sleeve clamping forces are generated by disc springs.
  • the generation of the clamping forces by disc springs is fraught with some problems. Certain problems of such elements are further highlighted below in the description of the figures of this application.
  • the problems of the disc springs can be solved by the use of porous elastomers according to EP-A-219752, but it is suspected that such elastomer materials are subject to aging phenomena in the long term, which impair the clamping performance. If this occurs in practice, the force-generating must Elements to be replaced. In addition, the assembly and loosening power is very high.
  • This invention is concerned with an alternative solution which contains fewer aging risks and can be operated with a smaller amount of releasing force.
  • a spool according to this invention has an axially movable first part, a second part spaced axially from the first part, an elastically deformable part between the first and second parts to bias the latter in the spacing increasing direction, and sleeve tensioning elements which move radially with axial movement of the first part.
  • the coil mandrel is characterized in that the deformable part consists of several bodies and that each body is subjected to a shear load in use in order to generate the prestress.
  • reference numeral 10 indicates the casing tube a coil mandrel of any type, with a longitudinal (rotary) axis 12 out.
  • Reference numeral 14 indicates a central guide which is arranged coaxially with the tube 10.
  • Sleeve clamping elements 34 sit on the conical surface of element 16 and protrude radially outward into a corresponding opening 36 in the casing tube 10 in.
  • the element 16 is movable in the longitudinal direction (axial direction) of the mandrel or of the tube 10, the elements 34 sliding on the conical surface of the element 16 and thereby moving radially outwards or inwards through their respective openings 36.
  • a stop 28 is fixed relative to the tube 10 and the Guide 14 mounted (details not shown).
  • An elastically deformable body in the form of a hollow truncated cone 40, contacts the guide 14 and the stop 28 at its smaller end, and the end face of the element 16 and the inside of the flange 18 at its larger end.
  • the body is 40 in all operating states compressed between the element 16 and the stop 28. Since the stop 28 sits firmly on the guide 14, the body 40 exerts an axially directed force on the element 16, which biases the element 16 away from the stop 28 (to the left in FIG. 1).
  • a suitable means (not shown) is present to limit the movement of the element 16 away from the stop 28 and thereby the displacement of the sleeve clamping elements 34 radially outwards.
  • This state determines the maximum inner diameter of the sleeves 30, which are to be held on the mandrel by this sleeve clamping system.
  • Sleeves with smaller inner diameters, up to the outer diameter of tube 10, can be held by a smaller distance between element 16 and stop 28.
  • the sleeve 30 has the maximum permissible inside diameter D, this corresponds to a certain distance L between the element 16 and the stop 28.
  • the distance range (L-1) can be called "sleeve clamping area", and the force / displacement characteristic of the body 40 is to be arranged such that predetermined sleeve clamping forces are exerted by the clamping elements 34 on the sleeve 30 to be tensioned within the sleeve clamping area.
  • the distance between element 16 and stop 28 must be able to be reduced even further, for example to the distance s. In this state, the body 40 must exert a predetermined maximum prestress on the element 16 to be overcome by the release means.
  • Body 40 is formed from a compact elastomer, i.e. without significant porosity.
  • space around the body 40 must be left free.
  • a chamber 42 within the body and a chamber 44 surrounding the body 40 are left free.
  • Deformations of the end portions of the body 40 are limited, not only by contact with the stop 28 and the end face of the element 16, but also by contact with the guide 14 and the inside of the flange 18.
  • the axial forces transmitted by the element 16 strain the Body 40 with pressure and / or with thrust. The result is a spread of the wall thickness t, the spread not necessarily being evenly distributed over the entire length of the body.
  • Fig. 2 shows a variant with modified disc springs to explain the comparison between this invention and a conventional disc spring assembly.
  • the guide 14 and the casing tube 10 are the same as in FIG. 1, and it can be assumed that the whole arrangement has a stop (similar to the stop 28, FIG. 1) fixed on the guide 14 and a cone element (similar to the element 16 1, but without flange 18); however, the latter elements are not shown in FIG. 2.
  • the cone element is preloaded by a package of disc springs 50, of which only three springs are shown in this figure.
  • Each of these springs 50 comprises an inner ring 52, which surrounds the guide 14, and an outer ring 54, which lies well on the inside of the casing tube 10. Axial forces are transmitted between adjacent springs 50 by touching their outer rings 54 or their inner rings 52.
  • the spring 56 indicated with dash-dot lines is a conventional disk spring, without inner and outer rings 52, 54.
  • the axial load which the curvature 50A causes would not have the same effect on the disk spring 56. Instead, the inner diameter of the spring 56 would be reduced and / or the outer diameter of the spring would expand, as indicated by the small arrows.
  • the general structure of the coil mandrel 200 partially shown in FIG. 3 largely corresponds to the structure of the mandrels shown in the aforementioned European patents 217 776 and 219 752, and that in FIG. 3 Reference numerals used correspond as closely as possible to the reference numerals of the aforementioned European patent specifications.
  • the outer tube is indicated as a sleeve-carrying part of the mandrel 200.
  • This tube 22 is connected by a suitable means 210 (only partially shown) to a bearing section (not shown, left of the picture).
  • the mandrel 200 is designed so that it can wind a plurality of threads simultaneously by rotating about its own longitudinal axis into individual packages (bobbins). For each thread to be wound, the mandrel 200 must receive a corresponding empty sleeve (not shown in FIG. 3) and hold it in place during the bobbin build-up.
  • bobbins individual packages
  • FIG. 3 shows the sleeve clamping unit for such a sleeve, namely for the one which is worn at the "inner" end of the tube 22 (closest to the bearing part) in use.
  • a similar sleeve tensioning unit is provided for every other thread to be wound up (for every other sleeve).
  • the assembly shown in FIG. 3 comprises a stop 86A, which is fixed with screws 92 in relation to the outer tube 22.
  • the unit also comprises two sleeve clamping devices, which are arranged in mirror image on opposite sides of the stop 86A, but are otherwise constructed similarly.
  • the description below refers primarily to the left device, the reference numerals for the corresponding parts of the right device being added in parentheses.
  • the sleeve tensioning device includes a set of sleeve tensioning elements 34 (34) which (as in Fig. 1) radially backward (as in Fig. 1) by axial movement of a cone 76 (100) can be moved outside.
  • Cone 76 (100) is connected at its larger end to a guide member 96 A (102A), and the latter part slides on the inside of tube 22 to guide the axial movements of cone 76 (100).
  • the cone 76 (100) connects to an annular piston 74 (98) which is guided on the outside on the inside of the tube 22 and on the inside on a connecting tube 66A.
  • a pressure chamber 78 (104) On the other side of the piston 74 (98), the cavity within the tube 22 is left open to form a pressure chamber 78 (104).
  • the various pressure chambers can be supplied with pressure medium through the bearing section via a suitable line 220 and via the connecting channel 230 provided in the guide tube 66A.
  • chamber 78 (104) When chamber 78 (104) is pressurized, piston 74 (98) slides along guide tube 66A against stop 86A.
  • the cone 76 (100) follows the movement of the piston 74 (98), which releases a sleeve or coil. However, this movement can only be carried out by overcoming a prestress exerted on the guide part 96A (102A) and originating from two spring elements 400 (400). As indicated by the reference numerals, all the spring elements 400 are constructed identically, and only one of them is individually described below as an example.
  • Each spring element 400 comprises a truncated cone-shaped body 40A made of a compact elastomeric material, similar to the body 40 in FIG. 1. Furthermore, however, each element 400 also comprises an outer metal ring 410 and an inner metal ring 420. Body 40A is part of its larger end part over its entire wall thickness the inside of the ring 410, and on its smaller end portion firmly connected to the outside of the ring 420.
  • Each element 400 including the body 40A and rings 410, 420, is therefore assembled as a unit in the unit, the individual spring elements 400 being arranged in pairs in mirror image to one another, so that one ring 410 of the pair against the stop 86A and the other ring 410 of the Pair abuts against the respective guide part 96A (102A).
  • the axial forces are transmitted between the elements of the pair by contacting the inner rings 420.
  • each ring 420 is provided with a sliding layer 430, and the latter sits snugly on the outer surface of the guide tube 66A, so that the element can slide freely along the guide tube.
  • the outer surface of one ring 410 of a pair is from a flange 85 at stop 86A, and the outer surface of the other ring 410 of the pair of springs is positioned through a flange 97 (101) at guide member 96A (102A).
  • the inner and outer rings 420, 410 form limiting means in and of themselves, which limit the freedom of movement of the body 40A outwards and inwards under deformation.
  • each body 40A is already compressed in this state by the rings 410, 420, so that the desired axial force is exerted on the respective guide part 96A (102A) and thereby the sleeve tensioning elements 34 are subject to the desired clamping forces.
  • bodies 40A are further compressed between their respective rings 410, 420, releasing the tensioning forces.
  • the axial forces which are transmitted from the stop 86A and the guide parts 96A, 102A to the spring elements 400 load each body 40A with pressure and thrust, so that the wall thickness of the element spreads out from its fully relaxed state (not shown).
  • Suitable spring elements are available from Huber + Suhner, 8330 Pfäffikon, under the general name "Vibratex elements".
  • the example shown in FIG. 3 is a special version of the Vibratex element V14, the inner surface of the outer ring 410 and the outer surface of the inner ring 420 being arranged slightly obliquely to the axis in order to better transmit the axial forces to the body 40A.
  • the inner and outer surfaces of both rings are arranged coaxially to the axis.
  • each individual spring element is formed in the form of a rotating body. This is not a requirement.
  • the rotational symmetry of the entire unit is important, but this is favored by the rotational symmetry of the individual components.
  • each element is neatly guided inside the tube 66A and outside on the flange 85 or 97 (101) and centered with respect to the mandrel axis. Imbalance cannot occur due to the radial displacement of the entire element.
  • the deformation must be distributed symmetrically around the mandrel axis.
  • the effects of axial forces and that of centrifugal force must be taken into account.
  • the radial spread of the smaller end from the body 40A is limited to the ring 420 by the vulcanization.
  • the "free length" (F, Fig. 1) of the elastic body should be kept short, just to keep the free radial expansion small.
  • the deformation necessary to generate the restoring force is caused as far as possible by shear loading.
  • the freedom of the elastic body to expand radially can thus be reduced to a minimum.
  • the Shore A hardness can be between 30 and 90, with a value in the range of 50 to 80 being preferred.
  • the characteristic feature of shear loading is the thrust module.
  • the elastic body can have a shear modulus between 30 and 280 N / cm2, a value in the range from 50 to 200 N / cm2 being preferred.
  • each element must face the axis of rotation be centered. For this purpose, however, it is not absolutely necessary to provide internal and external guidance. If a continuous central element (tube 66A) is not necessary for the aggregate as a whole, each element can be filled on the inside or limited internally by its inner ring.

Landscapes

  • Winding Filamentary Materials (AREA)
  • Springs (AREA)
  • Rolls And Other Rotary Bodies (AREA)
EP87116079A 1986-11-11 1987-11-02 Hülsenspannsystem für einen Spulendorn Expired - Lifetime EP0270826B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4490/86 1986-11-11
CH449086 1986-11-11

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP90114238A Division EP0404204B1 (de) 1986-11-11 1987-11-02 Hülsenspannsystem für eine Spulendorn
EP90114238.0 Division-Into 1990-07-25

Publications (2)

Publication Number Publication Date
EP0270826A1 EP0270826A1 (de) 1988-06-15
EP0270826B1 true EP0270826B1 (de) 1991-04-17

Family

ID=4277082

Family Applications (2)

Application Number Title Priority Date Filing Date
EP87116079A Expired - Lifetime EP0270826B1 (de) 1986-11-11 1987-11-02 Hülsenspannsystem für einen Spulendorn
EP90114238A Expired - Lifetime EP0404204B1 (de) 1986-11-11 1987-11-02 Hülsenspannsystem für eine Spulendorn

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP90114238A Expired - Lifetime EP0404204B1 (de) 1986-11-11 1987-11-02 Hülsenspannsystem für eine Spulendorn

Country Status (5)

Country Link
US (1) US4830299A (enrdf_load_stackoverflow)
EP (2) EP0270826B1 (enrdf_load_stackoverflow)
JP (1) JPS63123773A (enrdf_load_stackoverflow)
DE (2) DE3788733D1 (enrdf_load_stackoverflow)
IN (1) IN169417B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4224100A1 (de) * 1991-08-02 1993-02-04 Barmag Barmer Maschf Spulspindel

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3198736B2 (ja) * 1993-07-14 2001-08-13 東レ株式会社 ボビン把持装置およびボビンホルダ
CH691856A5 (de) * 1997-02-18 2001-11-15 Rieter Ag Maschf Spulendorn.
JP6337505B2 (ja) * 2014-02-24 2018-06-06 住友電気工業株式会社 線状体の巻き取り装置および線状体の製造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB788244A (en) * 1955-07-25 1957-12-23 Karlsruhe Augsburg Iweka Improvements in or relating to devices for supporting and driving bobbins for synthetic thread winding machines
US2941735A (en) * 1955-12-13 1960-06-21 Du Pont Bobbin chuck
US4142690A (en) * 1975-04-18 1979-03-06 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Spool carrier, particularly for winding up textile threads or the like
US4232835A (en) * 1979-07-12 1980-11-11 E. I. Du Pont De Nemours And Company Bobbin chuck
GB8524303D0 (en) * 1985-10-02 1985-11-06 Rieter Ag Maschf Chuck structures

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4224100A1 (de) * 1991-08-02 1993-02-04 Barmag Barmer Maschf Spulspindel

Also Published As

Publication number Publication date
EP0404204B1 (de) 1994-01-05
US4830299A (en) 1989-05-16
JPH0367943B2 (enrdf_load_stackoverflow) 1991-10-24
EP0270826A1 (de) 1988-06-15
DE3769446D1 (de) 1991-05-23
EP0404204A2 (de) 1990-12-27
JPS63123773A (ja) 1988-05-27
DE3788733D1 (de) 1994-02-17
IN169417B (enrdf_load_stackoverflow) 1991-10-12
EP0404204A3 (de) 1991-05-08

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