US3323747A - Friction device for winding machines - Google Patents

Friction device for winding machines Download PDF

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Publication number
US3323747A
US3323747A US452472A US45247265A US3323747A US 3323747 A US3323747 A US 3323747A US 452472 A US452472 A US 452472A US 45247265 A US45247265 A US 45247265A US 3323747 A US3323747 A US 3323747A
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US
United States
Prior art keywords
winding
ring
friction device
friction
outer ring
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
US452472A
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English (en)
Inventor
Willi J Schmidt
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.)
Kalle GmbH and Co KG
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Kalle GmbH and Co KG
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 Kalle GmbH and Co KG filed Critical Kalle GmbH and Co KG
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Publication of US3323747A publication Critical patent/US3323747A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • B65H23/063—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle and controlling web tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/06—Registering, tensioning, smoothing or guiding webs longitudinally by retarding devices, e.g. acting on web-roll spindle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
    • F16D7/02—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type
    • F16D7/021—Slip couplings, e.g. slipping on overload, for absorbing shock of the friction type with radially applied torque-limiting friction surfaces
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed
    • G11B15/50—Controlling, regulating, or indicating speed by mechanical linkage, e.g. clutch

Definitions

  • the present invention relates to a friction device for winding machines which ensures, during the winding-up operation, a predetermined tension of a web to be wound up.
  • This friction device is used when plural windings, e.g. of narrow webs of films which are produced by longitudinally dividing a wide web of film, are to be performed on a common winding shaft, which, due to the differences of the thickness of the initial web often occurring, would not result in accurate conveyance. Exact winding further requires smooth running of the winding core and of the units supporting the winding core on the winding shaft.
  • Known friction devices generally have the following construction: Between two discs mounted on the winding shaft, which are movable along the winding shaft but secured against any torsion, there are two additional discs supporting the winding core and rotating on the winding shaft. Between an outer mounted disc and an inner rotating disc there are discs of felt or synthetic plastic, which, by means of an adjusting ring of variable pressure, may contact the rotating center discs, the outer mounted discs serving as abutments. Corresponding to the contact .pressure of the felt or plastic discs on the center discs supporting the winding core, a predetermined torsional moment is transferred by the leading winding shaft to the rotating discs and thus to the winding core, this causing a certain tension of the web to be wound up.
  • the known friction devices have the advantage of being simple, but also exhibit a variety of drawbacks. Particularly, there is insufficiently accurate conveyance in the known devices, especially as regards soft friction. Lateral conveyance of the wound-up web results in a considerable percentage of scrap. Although the adjusting ring makes possible a gradual variable tenison of the web, it is almost impossible, for various reasons, to maintain this tension during a longer period. The lateral limitation by the mounted adjusting rings, for example, may cause a linear expansion of the side discs by means of frictional heat, which results in an increase of the contact pressure of the felt discs and thus in an undesirable increase of the web tension.
  • the present invention provides a friction device which overcomes the drawbacks mentioned above and ensures smooth and exact winding.
  • FIGURE l is a view in longitudinal section through one embodiment of a friction device according to the present invention.
  • FIGURE 2 is a sectional view taken on line 2 2 of FIGURE 1.
  • the friction device of the present invention comprises two concentrically mounted rings 1 and 2 which are ro- Patented June 6, 1967 ICC tatable with respect to each other with gradually variable friction and without lateral movement in a plane at a right angle to the common axis and in the common center, the friction between the inner ring 1 and the outer ring 2 being effected by brake devices 8 and 8 in the annular space 12 between the outer ring 2 .and the inner ring 1.
  • An adjusting ring 10 is mounted on the inner ring 1 and at least partially covers the annular space.
  • the brake devices are interconnected on one side by a resilient means 14 and, on the other side, one of them is mounted by the bolt 13 on t-he inner ring 1 and one is mounted by the bolt 13' on the adjusting ring 10 which is adjustable, in various positions in the zone of the slots 17 by means of fastening devices, with respect to the inner ring 1.
  • Exact running of the two concentric rings 1 and 2 of the friction device of the present invention may be effected by a radially and axially supporting bearing between the inner ring 1 and the outer ring 2, e.g. a ball bearing, which can be adjusted so as to operate smoothly and with freedom from play.
  • a radially and axially supporting bearing between the inner ring 1 and the outer ring 2 e.g. a ball bearing, which can be adjusted so as to operate smoothly and with freedom from play.
  • the brake devices 8 and 8 may comprise friction material generally used for brake linings. Their number need not be two, as shown in FIGURE 2, and more than two brake devices may be mounted in the space 12.
  • the inner ring 1 has means on its inner surface whereby the friction device can be mounted on a winding shaft.
  • the device preferably comprises a key 18 radially mounted on the inside and adapted to engage in a groove of the winding shaft.
  • the friction device of the present invention has means capable -of coupling the outer ring 2 and the winding core 9.
  • a clamping device preferably is used for this purpose, which comprises the groove 4a,-
  • the vertical side walls of the groove 4a are provided with sloped ⁇ sections projecting against the spiral spring 4, the sloped sections being adjustable by rotating the threaded ring 3 so that they are opposite to each other, to increase tension, or alternating, to release tension.
  • the spiral spring 4 is raised from the groove 4a and against the winding core. If, however, a vertical section of the flank of the outer ring 2 is opposite to a sloped projection of the .threaded ring 3, the tension spring 4 seats in the groove 4a and the winding core 9 is released.
  • the outer periphery of the outer ring 2 is further provided with a plurality of small projections 16 serving as lateral stops for the winding core 9.
  • the winding core 9 correspondingly possesses on its periphery, over the entire width, an equal number of depressions which are spaced in such a manner that, in a matching position, the winding core 9 can be drawn over the projections of the outer ring 2.
  • the advantage of this arrangement lies in .the fact that, when removing the winding cores upon completion of the winding operation, it is not necessary to remove the entire friction devices, but the individual winding cores, the spring 4 being released, can be passed over any number of friction devices to the end of the winding shaft, where they can be taken off by removing this end from the bearing. A new adjustment of the web tension is thus not required for the next succeeding winding operation.
  • FIGURE 1 there are shown two concentrically mounted rings 1 and 2, the inner ring having a key 18 by means of which it can be keyed in the keyway of a winding shaft.
  • the outer ring 2 is coupled with the winding core 9 by means of a clamping device.
  • the annular space 12 which is sealed by a labyrinth seal, there are two radially operating brake shoes 8 and 8 connected by the compression spring y 14.
  • One of the shoes is mounted by the bolt 13 on the inner ring 1 and the other by the bolt 13' on the adjusting ring 10.
  • the brake shoes 8, which serve to obtain a desired friction value depending on the winding width and winding material, are on the outside adjacent to an extension of the outer ring 2, which simultaneously is the outer part of the ball bearing race.
  • the adjustment of the contact pressure of the brake shoes 8 and 8 on the outer ring 2, and thus the regulation of the friction value, is performed by turning the adjusting ring 10, which is mounted on the inner ring 1, after loosening the two screws 11 and 11 which then can be moved in the slots 17.
  • Adjustment of the adjusting ring 10 is limited by the end walls 15, at the ends of the slots 17, by means of which the adjusting ring 10 is secured to the inner ring 1.
  • the height of the end walls .15 determines the width of the annular space 12.
  • the bolt 13 serves as a fixed point of the brake shoe 8 and is mounted on the adjusting ring 10, whereas the bolt 13', secured to the brake shoe 8,', is connected with the inner ring 1.
  • the adjusting ring 10 can be moved to another position, the bolts 13 and 13 being separated from each other or moved towards each other, in accordance with the direction of rotation.
  • this movement becomes inversely effective as longitudinal change of the compression spring 14, which presses the brake shoes 8 and 8 more or less against the braking area of the outer ring 2.
  • the outer periphery of the outer ring 2 is provided with a clamping device which comprises the threaded ring 3 and the spiral tension spring 4.
  • a clamping device which comprises the threaded ring 3 and the spiral tension spring 4.
  • the plane side of the threaded ring 3 which is opposite to the spiral tension spring 4 is intermittently provided with conical projections which project from the rectangular plane side of the threaded ring 3.
  • the opposite ila-nk of the outer ring 2 is intermittently conically formed so that, when the corresponding conical sections are opposite to each other, the tension spring 4 passing around the entire periphery is forced out of the groove 4a by means of this enlargement of the diameter in the zones of the conical sections and thus clamps the winding core 9.
  • the clamping device ensures rapid and smooth mounting of the winding cores.
  • a friction device for a winding machine which cornprises two relatively rotatable, concentric, inner and outer rings having an annular space between them, an adjusting ring mounted on the inner ring, and a pair of brake shoes in the annular space, one being pivotally secured at one end thereof to the inner ring and one being pivotally secured at one end thereof to the adjusting ring, the other ends of the brake shoes being connected by spreading mea-ns.
  • a friction device according to claim 1 including bearing means between the inner and outer rings.
  • a friction device including means for locking the adjusting ring in a desired position.
  • a friction device according to claim 1 in which the spreading means is a compression spring.
  • a friction device including clamping means on the outer ring whereby the latter can be connected to a winding core.
  • a friction device in which the clamping means comprises a groove in the periphery of the outer ring, a spring in the groove, and means for raising the spring in the groove over at least a portion of the periphery of the outer ring.
  • a friction device in which the periphery of the outer ring has a plurality of projections thereon which serve as abutments for a winding core.
  • N'. L. MINTZ Assistant Examiner.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Winding Of Webs (AREA)
  • Braking Arrangements (AREA)
US452472A 1964-05-06 1965-05-03 Friction device for winding machines Expired - Lifetime US3323747A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK52885A DE1290407B (de) 1964-05-06 1964-05-06 Rutschkupplung fuer Aufwickelvorrichtungen

Publications (1)

Publication Number Publication Date
US3323747A true US3323747A (en) 1967-06-06

Family

ID=7226526

Family Applications (1)

Application Number Title Priority Date Filing Date
US452472A Expired - Lifetime US3323747A (en) 1964-05-06 1965-05-03 Friction device for winding machines

Country Status (6)

Country Link
US (1) US3323747A (xx)
BE (1) BE663368A (xx)
DE (1) DE1290407B (xx)
GB (1) GB1106620A (xx)
LU (1) LU48516A1 (xx)
NL (2) NL6505349A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5344043A (en) * 1989-09-29 1994-09-06 Thomas S. Moulding Dispenser especially adapted for dispensing medication units
EP1288430A2 (de) * 2001-08-31 2003-03-05 Kaba Gallenschütz GmbH Antriebs- und Verriegelungsaggregat

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19517225C2 (de) * 1995-05-11 1998-03-12 Beiersdorf Ag Wickelwelle
TWI550207B (zh) * 2014-09-05 2016-09-21 楊正平 具離心力調變功能之扭力釋放裝置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206381A (en) * 1938-10-31 1940-07-02 Rca Corp Film magazine
US2405446A (en) * 1943-11-02 1946-08-06 Carey Philip Mfg Co Roll supporting device
US2726051A (en) * 1953-02-09 1955-12-06 Lifetime Products Corp Coiler

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE909428C (de) * 1952-04-26 1954-04-15 Eickhoff Geb Rutschkupplung fuer Foerderbandantriebe
DE1143074B (de) * 1958-11-13 1963-01-31 Kampf Maschf Erwin Wickelwelle
DE1140424B (de) * 1959-02-23 1962-11-29 Fischer & Krecke Kg Vorrichtung an Wickelwellen zum Festklemmen von Wickelhuelsen fuer Papierrollen od. dgl.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2206381A (en) * 1938-10-31 1940-07-02 Rca Corp Film magazine
US2405446A (en) * 1943-11-02 1946-08-06 Carey Philip Mfg Co Roll supporting device
US2726051A (en) * 1953-02-09 1955-12-06 Lifetime Products Corp Coiler

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5344043A (en) * 1989-09-29 1994-09-06 Thomas S. Moulding Dispenser especially adapted for dispensing medication units
EP1288430A2 (de) * 2001-08-31 2003-03-05 Kaba Gallenschütz GmbH Antriebs- und Verriegelungsaggregat
EP1288430A3 (de) * 2001-08-31 2004-04-28 Kaba Gallenschütz GmbH Antriebs- und Verriegelungsaggregat

Also Published As

Publication number Publication date
DE1290407B (de) 1969-03-06
NL7411509A (xx) 1975-01-31
LU48516A1 (xx) 1966-11-04
BE663368A (xx) 1965-11-03
NL6505349A (xx) 1965-11-08
GB1106620A (en) 1968-03-20

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