US3850394A - Bobbin holder - Google Patents

Bobbin holder Download PDF

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Publication number
US3850394A
US3850394A US00361461A US36146173A US3850394A US 3850394 A US3850394 A US 3850394A US 00361461 A US00361461 A US 00361461A US 36146173 A US36146173 A US 36146173A US 3850394 A US3850394 A US 3850394A
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United States
Prior art keywords
tube
spreading
bobbin holder
levers
push rod
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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
US00361461A
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English (en)
Inventor
H Raasch
D Engelhardt
W Maassen
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
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Publication date
Application filed by W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
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Publication of US3850394A publication Critical patent/US3850394A/en
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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
    • B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
    • B65H49/02—Methods or apparatus in which packages do not rotate
    • B65H49/04—Package-supporting devices
    • B65H49/06—Package-supporting devices for a single operative package
    • 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

  • BOBBIN HOLDER Inventors: Hans Raasch, Rheydt; Dietmar Engelhardt; Wilhelm Maassen, Monchengladbach, all of Germany W. Schlafhorst & Co., Monchengladbach, Germany Filed: May 18, 1973 Appl. No.: 361,461
  • a bobbin holder for receiving and securing a conical or cylindrical tube is provided with a support tube, a conical clamping ring axially movably mounted on the support tube, and a pair of spreading levers each having a free end and being pivoted for movement toward or away from each other in a plane which includes the axis of the support tube.
  • the clamping ring and the spreading levers are spaced from each other in the axial direction of the support tube.
  • the pivots of the levers are closer than the free ends of the levers to the clamping ring.
  • the position of the clamping ring closest to the pivots of the spreading levers is the smallest diameter portion.
  • the clamping ring and the spreading levers are, accordingly, adapted to engage the respective ends of the conical or cylindrical tube and thus secure the conical or cylindrical tube.
  • the invention relates to a bobbin holder for receiving and securing conical and cylindrical tubes, the bobbin holder comprising movable or resilient elements which are provided with contoured contact surfaces for the tube ends.
  • a tube mounting should furthermore ensure that the central axis of a yarn bobbin is always aligned toward the center of the inlet eyes or the like that are disposed in the path of the thread.
  • the spool of yarn to be unwound is usually swung automatically from a standby position into the unwind position. It can furthermore happen that the yarn bobbin is subject to a movement during the unwinding process.
  • a tube must therefore be secured so that it cannot be loosened from its seat either by the weight of the spool of yarn or by the gravitationally produced forces that occur.
  • there are tubes of conical and cylindrical shape are Besides the shape, however, the diameter and the length of such tubes may also vary over wide ranges.
  • a bobbin holder should be suited for as many types of tubes as possible without the necessity to change parts of the bobbin holder or to perform timeconsuming adjustments. Finally, it should be possible to remove empty tubes easily and to push full bobbins onto the bobbin holder without effort.
  • the bobbin holder comprises a support tube which is equipped with a clamping ring that is adjustable according to the length of the tube and forms the contact surface for one end of the tube, and with two spreading levers that are adjustable according to the diameter of the tube and form the contact surface for the other end of the tube.
  • the conical clamping ring assures good Contact and centering of tubes of small and large diameters, regardless of whether the tube is of conical or cylindrical shape.
  • the two spreading levers adapt themselves likewise to any tube diameter, forming a further contact surface. In this manner, positive support on both sides is achieved for the pushed-on tubes with their yarn bodies.
  • the great adaptability of the bobbin holder according to the invention is obtained by the fact that the spreading levers are fulcrumed at the support tube and are enclosed in the region of the fulcrums by a circular spring element. It is particularly advantageous here that the spreading levers be provided with sloping guide surfaces.
  • a push rod which is provided with a transverse pin and adjusts the spreading levers through their guide slopes, be arranged in the support tube.
  • the spreading levers can be pushed together easily. If, however, forces act unevenly on the spreading levers from the outside, for instance, static and/or dynamic forces due to the weight of the bobbins, these forces are always counteracted by forces which cause self-locking between the individual parts and thereby ensure, nevertheless, a secure holding of the tube with its body of yarn.
  • the push rod can be coupled with a switching lever.
  • This switching lever can be operated manually as well as automatically. Automatic operation is possible, for instance, during the swinging motion of the bobbin holder from an unwind position into a stand-by or loading position.
  • the removal of an empty tube can further be facilitated by providing that the push rod be coupled by slide wires for bridging the contact surfaces of the spreading levers. In this manner the inner edge of an empty tube is prevented from catching upon removal of the empty tube.
  • FIG. 1 is a longitudinal cross section through the bobbin holder with a spool of yarn in the clamped condition
  • FIG. 2 is a fragmentary longitudinal cross section through the bobbin holder and spool of FIG. 1 in a plane perpendicular to FIG. 1;
  • FIG. 3 is a front view for FIG. 2;
  • FIG. 4 is the bobbin holder in the view according to FIG. 1 being manually operated to release the tube;
  • FIG. 5 is a view corresponding to FIG. 1 but with a short, cylindrical tube and corresponding bobbin body now being clamped on the bobbin holder and a cam being provided for mechanical operation of the push rod;
  • FIG. 6 is a view which illustrates the forces on the substantially horizontal bobbin holder under various possible loads
  • FIG. 7 is a force diagram of the forces in FIG. 6;
  • FIG. 8 is a view which illustrates the forces on a bobbin holder arranged in a substantially vertically downwardly hanging position
  • FIG. 9 is a view which illustrates the forces on the bobbin holder when a tube is pushed on.
  • the bobbin holder 1 consists of a support sleeve or tube 2, which in the embodiment shown here is screwed to an unwind frame 3.
  • the support tube 2 has two pins 4, which can be seen particularly clearly in FIG. 2.
  • the two spreading levers 5 and 6 are pivoted on the pins 4.
  • the sliding sleeve 7, which is provided with an internal thread, is movably supported in the support tube 2.
  • a push rod 8 is screwed into the sliding sleeve 7.
  • the push rod 8 is firmly connected to a transverse pin 9, which may be seen particularly clearly in FIG. 3.
  • the two guide slopes 5' and 6' of the spreading levers 5 and 6 bear against the transverse pin 9.
  • the two spreading levers 5 and 6 In the vicinity of the respective fulcrum of each, the two spreading levers 5 and 6 have a slot-like recess, into which a circular spring element 10 is placed.
  • the circular spring element 10 pushes the spreading levers 5 and 6 against the transverse pin 9.
  • a sleeve 11 is firmly connected to the slide bushing 7. At its end remote from the slide bushing 7, the sleeve 11 has two bearings 12 into which the slide wires 13 are received.
  • the slide wires 13 are designed so that they disappear within the contour of the spreading levers 5 and 6 in the position shown in FIG. 1.
  • the point of exit of the slide wires 13 in the spreading levers is situated at the point where a groove forms the contact surface 14, against which the front end of the conical tube 15 can brace itself.
  • the conical tube 15 carries a yarn body 16.
  • the sliding bushing 7 is pinned to the shaft 17, which in turn carries the collar 18 which is secured axially on the shaft 17 by the retaining ring 19.
  • a washer 20 bears against a step in the support tube 2.
  • a compression spring 21 pushes the collar 18 and the washer 20 against the step in the support tube 2 and the retaining ring 19, respectively. It will be seen that through the retaining ring 19, which is inserted into a groove in the support tube 2, a positive fixation of the shaft 17 and thereby also of the slide bushing 7 is effected.
  • a switching lever 22 is fulcrumed at the bearing 23 and connected to the shaft 17 by a pin 24. By moving the switching lever 22 counterclockwise (FIG. 4) the shaft 17 can be moved against the force of the compression spring 21.
  • the conical clamping ring 25 is movably attached to the support tube 2 by means of a cup spring 27 which rests with its outer diameter against a counterbore in the conical clamping ring 25 and can be clamped or released by the clamping disc 28.
  • a cup spring 27 which rests with its outer diameter against a counterbore in the conical clamping ring 25 and can be clamped or released by the clamping disc 28.
  • the operation of the bobbin holder 1 is as follows.
  • the switching lever 22 is gripped with one hand and is swung counterclockwise as shown in FIG. 4.
  • the bobbin holder 1 is provided with a switching lever 22' which can also be operated mechanically, for instance, by means of a cam 29.
  • the switching leber 22 or 22' By swinging the switching leber 22 or 22', respectively, counterclockwise, as shown in FIG. 4, the shaft 17 and thereby also the slide bushing 7 are removed to the left.
  • FIG. 5 is illustrated how the bobbin holder 1 is adapted to another tube configuration. While in FIG. 1 an elongated conical tube 15 is mounted, in FIG. 5 a shorter cylindrical tube 29 is mounted.
  • the spreading levers 5 and 6 are swung apart so far that the transverse pin 9 can be turned freely.
  • the push rod 8 is subsequently screwed into the slide bushing 7 so far that the spread of the spreading levers 5 and 6 corresponds to the hole of the tube when the guide slopes 5' and 6' rest against the transverse pin 9.
  • the conical clamping ring 25 is moved until the tube 29 is held axially and radially between the contact surfaces 14 of the spreading levers 5, 6 and the clamping ring 25. Then the clamping disc 28 is pulled up again. Securing the push rod 8 against rotation is not necessary, as the spreading levers 5, 6 are pushed against the transverse pin 9 by the circular spring element 10 and prevent rotation in this manner.
  • the indicator markings 30 and 31 applied respectively on the support tube 2 and the guide slopes 5', 6 can facilitate the adjustment when going from one tube configuration to another.
  • a particular advantage of the bobbin holder 1 according to the invention resides in the fact that in the case of forces acting unevenly from the outside on the spreading levers 5, 6, selflocking is caused between certain parts and the holding of the tubes is reliably assured.
  • the spreading levers 5, 6 can easily be pressed together if the pressure is distributed on the spreading levers 5, 6 uniformly, such as is the case if a new bobbin of yarn is pushed on. For this operation, the self-locking of the longitudinally moving parts is inoperative.
  • a force P acting unilaterally on the spreading lever 6 produces a contact force P, at the transverse pin 9.
  • P deviates from the vertical by the contact angle a.
  • the inclined contact force P acts upon the push rod 8 as the axial component A and the radial component P Axial component A acts on the push rod 8 in the release sense.
  • Resisting movement of the transverse pin 9 along the guide slope 6' is a friction force P 'p. produced at the point of contact. This friction force is perpendicular to P and acts upon the push rod 8 as the axial component A and the radial component P A counteracts A.
  • the radial components P and P act on the push rod 8 as lever forces and produce the support reaction forces P and P at the support points of the push rod 8. Resisting movement of the push rod 8 axially due to the force A, the support friction force P u and P ,u. is produced at the support points of the push rod 8. These friction forces are perpendicular to P and P and act against the axial force A. Finally, also the bias force A of the compression spring 21 acts against the axial force A. The spreading lever 6 cannot be released by the force P if the condition A P u P p. A 2 A is fulfilled. One can thereby determine the limit conditions, for which a bobbin holder according to the invention is still self-locking under the action ofa unilateral force P.
  • the contact angle 04 can be given as a function ofthe friction coefficient [.L. if the spreading levers 5, 6 are of steel and the bobbin is wound on a plastic tube, resulting in a friction coefficient ]J. 0.3, and the condition tan (ct/2) ,u. is fulfilled, a contact angle a 33.5 still gives reliable self-locking.
  • the axial load acts, for instance, through the cylindrical tube 29, in equal parts on the spreading levers 5 and 6 as P
  • P is divided into a force P perpendicular to the contact surfaces l4 and the component P generated at an angle of 90 thereto.
  • the component P produces an axial force A on the push rod 8, which would have a releasing effect.
  • the support forces such as are generated in the case of a unilateralapplication of force, do not become effective.
  • the friction forces counteracting the axial force A are also eliminated.
  • the friction forces P a which become effective at the contact surfaces 14, additionally oppose the collapsing of the spreading levers 5, 6.
  • P a is effective at the same angle but in opposite direction as P If one wants to cancel the effect of P then P p. must be equal to or greater than P Therefrom.
  • the limit condition for self-locking with an axial load is obtained tan ,B E a. This condition indicates how large the spreading angle ,8 can be allowed to become for a given friction coefficient between the tube and the spreading lever.
  • a force P and P inclined against the vertical by an angle (1 acts on the transverse pin 9 if a tube is pushed on.
  • These forces act on the push rod 8 as equidirectional axial forces A and A,,, while the radial components P and P have opposing directions and mutually cancel.
  • friction forces P a and P ,u. are generated during the movement.
  • the radial components on the push rod 8 are ineffective, as they are of opposite direction.
  • the axial components A and A are opposed here to the axial forces A, and A If the push rod 8 is to move axially due to uniform pressure on the spreading levers 5, 6, the condition A A A A must be fulfilled. This gives the limit condition, at which no self-locking occurs while a tube is pushed on.
  • the range of the contact angle a is defined by the following relation:
  • a mean value for the contact angle a can be selected which offers even for deviations of the assumed friction coefficient sufficient safety that the desired conditions are achieved.
  • Bobbin holder for receiving and securing a conical or cylindrical tube, comprising a support sleeve having an axis, a conical clamping ring axially movably mounted on said support sleeve, a pair of spreading levers each having a free end, pivot means for pivoting said levers toward or away from each other in a plane which includes the axis of said support sleeve, said clamping ring and said spreading levers being spaced from each other in axial direction of said support sleeve, said pivot means being closer than said free ends of said levers to said clamping ring, said clamping ring having a portion thereof of minimum diameter facing toward said pivot means, said clamping ring and said pair of spreading levers thereby being adapted to engage respective ends of the tube and thus secure the tube on the bobbin holder.
  • Bobbin holder according to claim 1, in which said spreading levers are provided with mutually facing guide surfaces, and including a pin arranged in engagement with said guide surfaces, said pin having an axis disposed transversely to said axis of said support sleeve.
  • Bobbin holder including a push rod axially movably mounted coaxially in said support sleeve, said pin being mounted on said push rod, whereby axial movement of said push rod moves said pin along said guide surfaces of said spreading levers and thereby adjusts said spreading levers.
  • each of said guide surfaces is shaped so that an angle a is defined between said guide surface at any point at which said guide surface is to contact the pin in operation of the bobbin holder and the axis of the push rod is such that tan a p. and tan (a/2) ,u, wherein [.L is the ocefficient of friction between the material of said spreading levers and the material of the tube.
  • Bobbin holder according to claim 1 in which a spreading angle ,8 of each of the spreading levers, which is the angle between the axis of said support tube and a line from the pivot means of said spreading levers to the point on said spreading lever which contacts an end of the tube, and the coefficient of friction ,u. between the material of said spreading lever and the material of the tube are such that tan B pt.
  • Bobbin holder according to claim 4, further comprising lever means coupled to said push rod for axially moving said push rod.
  • each of said slide wires being positioned to be received in the groove of a respective one of said spreading levers and thereby cover said contact surface when said push rod is actuated to release the tube secured on the bobbin holder.
  • Bobbin holder according to claim 3 in which the guide surfaces of said spreading levers are provided with indicator markings to assist in adjusting the spread of said spreading levers, and said support tube has an external surface provided with indicator markings to assist in adjusting the axial position of said clamping ring on the tube.
  • Bobbin holder for receiving and securing a conical or cylindrical tube, comprising a support sleeve, and a pair of means having respective contoured surfaces engageable with the ends of a tube, disposed around said support sleeve, one of said means comprising a substantially conical clamping ring mounted on said support sleeve and movable along the length thereof into engagement with one of the ends of the tube, and the other of said means comprising a pair of spreading lever means respectively fixed at one end thereof relative to said support sleeve and yieldably adjustable at the other end thereof to the diameter of the tube and engageable with the other end of the tube.

Landscapes

  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Unwinding Of Filamentary Materials (AREA)
  • Winding Filamentary Materials (AREA)
  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
US00361461A 1972-05-26 1973-05-18 Bobbin holder Expired - Lifetime US3850394A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2225555A DE2225555C3 (de) 1972-05-26 1972-05-26 Spulenhalter

Publications (1)

Publication Number Publication Date
US3850394A true US3850394A (en) 1974-11-26

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ID=5845896

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Application Number Title Priority Date Filing Date
US00361461A Expired - Lifetime US3850394A (en) 1972-05-26 1973-05-18 Bobbin holder

Country Status (5)

Country Link
US (1) US3850394A (enrdf_load_stackoverflow)
JP (1) JPS5744569B2 (enrdf_load_stackoverflow)
CH (1) CH553717A (enrdf_load_stackoverflow)
DE (1) DE2225555C3 (enrdf_load_stackoverflow)
IT (1) IT986105B (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544053A1 (de) * 1975-10-02 1977-04-07 Schlafhorst & Co W Spulenhalter
DE3134519A1 (de) * 1981-09-01 1983-03-17 Fried. Krupp Gmbh, 4300 Essen "vorrichtung zum endlosen ueberkopf-abhaspeln von metalldraht"
US4399957A (en) * 1981-12-02 1983-08-23 Singer Hans S Yarn package holder
US4485987A (en) * 1983-10-03 1984-12-04 Barber-Colman Company Holder for the core of a yarn package or the like
EP0129510A1 (de) * 1983-06-15 1984-12-27 Hans S. Singer Co., Inc. Haltevorrichtung für eine Garnspule
US4552321A (en) * 1984-02-06 1985-11-12 Raeckelboom Marc A Strand guide
US4556178A (en) * 1984-06-11 1985-12-03 Hans S. Singer Co., Inc. Holder for yarn package
US4765562A (en) * 1986-06-19 1988-08-23 Ic-Acbf Device for positioning and holding a yarn support tube during an operation of unwinding or winding
US5170979A (en) * 1992-02-28 1992-12-15 Milliken Research Corporation Universal package holder
US5522565A (en) * 1994-04-12 1996-06-04 Deshaies; Marcel R. Adjustable yarn package holder
US6082796A (en) * 1997-04-17 2000-07-04 Scaglia Spa Device to grip and manipulate bobbins of textile thread
US20170233209A1 (en) * 2014-09-23 2017-08-17 Futura S.P.A. Expandable pin for supporting parent reels in paper converting plants
CN110055673A (zh) * 2019-05-28 2019-07-26 广州市鲲扬节能设备科技有限责任公司 一种减捻器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63117875A (ja) * 1986-11-07 1988-05-21 Furukawa Electric Co Ltd:The 撚線機のボビン支持装置
DE68907832T2 (de) * 1988-08-23 1994-02-24 Tokyo Electric Co Ltd Spulenhalter.
FR2676237A1 (fr) * 1991-05-06 1992-11-13 Schlumberger Cie N Dispositif d'entrainement du bobinot d'un banc a broches pour fibres longues et courtes.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681189A (en) * 1948-12-31 1954-06-15 Ind Rayon Corp Spool holding device
US3331567A (en) * 1964-11-23 1967-07-18 Casablancas Ltd Rotary suspension bobbin holder for textile machines
US3400899A (en) * 1966-05-13 1968-09-10 Tytgath Georges Bobbin holder for fastening yarn bobbins to the bobbin creel of contents to be spun

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD18309A (enrdf_load_stackoverflow) *

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681189A (en) * 1948-12-31 1954-06-15 Ind Rayon Corp Spool holding device
US3331567A (en) * 1964-11-23 1967-07-18 Casablancas Ltd Rotary suspension bobbin holder for textile machines
US3400899A (en) * 1966-05-13 1968-09-10 Tytgath Georges Bobbin holder for fastening yarn bobbins to the bobbin creel of contents to be spun

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544053A1 (de) * 1975-10-02 1977-04-07 Schlafhorst & Co W Spulenhalter
DE3134519A1 (de) * 1981-09-01 1983-03-17 Fried. Krupp Gmbh, 4300 Essen "vorrichtung zum endlosen ueberkopf-abhaspeln von metalldraht"
US4399957A (en) * 1981-12-02 1983-08-23 Singer Hans S Yarn package holder
EP0129510A1 (de) * 1983-06-15 1984-12-27 Hans S. Singer Co., Inc. Haltevorrichtung für eine Garnspule
US4485987A (en) * 1983-10-03 1984-12-04 Barber-Colman Company Holder for the core of a yarn package or the like
US4552321A (en) * 1984-02-06 1985-11-12 Raeckelboom Marc A Strand guide
US4556178A (en) * 1984-06-11 1985-12-03 Hans S. Singer Co., Inc. Holder for yarn package
US4765562A (en) * 1986-06-19 1988-08-23 Ic-Acbf Device for positioning and holding a yarn support tube during an operation of unwinding or winding
US5170979A (en) * 1992-02-28 1992-12-15 Milliken Research Corporation Universal package holder
US5522565A (en) * 1994-04-12 1996-06-04 Deshaies; Marcel R. Adjustable yarn package holder
US6082796A (en) * 1997-04-17 2000-07-04 Scaglia Spa Device to grip and manipulate bobbins of textile thread
US20170233209A1 (en) * 2014-09-23 2017-08-17 Futura S.P.A. Expandable pin for supporting parent reels in paper converting plants
CN110055673A (zh) * 2019-05-28 2019-07-26 广州市鲲扬节能设备科技有限责任公司 一种减捻器

Also Published As

Publication number Publication date
DE2225555B2 (de) 1980-08-07
DE2225555C3 (de) 1981-07-30
CH553717A (de) 1974-09-13
IT986105B (it) 1975-01-20
DE2225555A1 (de) 1973-12-13
JPS5744569B2 (enrdf_load_stackoverflow) 1982-09-22
JPS4985334A (enrdf_load_stackoverflow) 1974-08-15

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