US3813866A - Gripping means for doffing yarn packages - Google Patents

Gripping means for doffing yarn packages Download PDF

Info

Publication number
US3813866A
US3813866A US00221864A US22186472A US3813866A US 3813866 A US3813866 A US 3813866A US 00221864 A US00221864 A US 00221864A US 22186472 A US22186472 A US 22186472A US 3813866 A US3813866 A US 3813866A
Authority
US
United States
Prior art keywords
ring
gripping
tube
interrupted
levers
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
US00221864A
Other languages
English (en)
Inventor
G Goldammer
E Grimm
E Egli
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.)
Rieter Ingolstadt GmbH
Original Assignee
Schubert und Salzer Maschinenfabrik 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 Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
Application granted granted Critical
Publication of US3813866A publication Critical patent/US3813866A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/001—Bobbin-taking arrangements

Definitions

  • the ring has a gap and the two free ring ends are positively moved toward each other across the gap to contract the ring to embrace the tube.
  • a separate lever arm is connected to each ring free end.
  • the two levers are disposed substantially parallel and are normally wedged apart to maintain the ring ends in spread condition to receive a tube.
  • Electromagnetic drive means effect movement of the levers together to contract the ring and grip a tube end. After the arm is raised, the levers are spread to release the tube and a plate above the ring presses the tube quickly out of the ring.
  • the invention relates more particularly to a gripping means for doffing .yarn packages on ring spinning and ring doublingtmachines, comprising an annular gripping or clamping element adapted to engage the core of the yarn package.
  • One aim of the present invention is to provide an annular gripping element which is engageable with the outer periphery of the core of a yarn package and which avoids the above-mentioned disadvantages.
  • the present invention is a gripping or clamping device for doffing yarn packages on ring spinning machinery comprising a gripping snap ring adapted to engage theouter surface of the core of such a yarn package and means connected with ends of the ring at'opposite sides of the ring gap for applying force to the ring for changing its diameter.
  • the means for applying the force can be adapted to exert either a tension or a thrust force.
  • the gripping ring comprises a number of secondary rings. In order to engage the whole of the outer peripheral surface of the core, the gaps in these secondary rings are circumferentially offset from one another.
  • the interrupted ring comprises two ring segments and one end of each such segment is fixed at a stationary point.
  • the two ends of the rings adjacent to the gap in the ring can be moved in relation to each other. By simultaneous movement of the ends toward each other, an accelerated contraction of the ring is brought about.
  • the gripping action of the interrupted ring can be improved by making it of a flexible, non-elastic, band-like part which on its inner surface has an elastic coating.
  • a solenoid is used to produce the thrust or tension forces.
  • the bore of the gripping ring is closed in an upward direction by a pressure plate which can be moved vertically. This makes possible an accelerated ejection of the core or tube with the rest of the yarn package from the gripping ring.
  • FIG. 1 is a diagrammatic bottom plan of a gripper arm showing the device of the invention.
  • FIG. 2 is a longitudinal section along the line II-II of FIG. 1.
  • FIG. 3 is a plan of a two-piece gripping ring.-
  • FIG. 4 is an exploded top perspective of a gripping element made up of several secondary rings.
  • the gripping arm shown in FIGS. 1 and 2 is part of a doffing device which can travel along ring spinning machinery, that is to say a ring spinning or ring doubling frame.
  • the doffing device can be of conventional construction, as described for instance in the above-mentioned British patent specification 1,012,789.
  • the gripper arm 1 is actuated by a drive via a thrust rod 10.
  • the drive can be as described in the same British patent specification and is therefore not described in detail.
  • a gripping or clamping ring 2 constituting a gripping or clamping element is mounted so as to be capable of moving.
  • the gripping ring is an interrupted ring with ends 21 and 22 adjacent to the interruption or gap.
  • the gripping ring 2 includes a flexible nonelastic part 20 in the form of a band and an elastic lining or coating 20 fixed on the part 20. While the flexible part 20 is preferably in the form of a strip string, the elastic part 20' can be made of rubber, plastics material or another material increasing frictional engagement with the package core. If rubber is selected as a mate rial for the coating, it can be connected with the part 20 by vulcanisation for example.
  • levers 23 and 24 are connected, respectively, by means of pins 230 and 240.
  • the levers 22 and 24 can pivot about pivot pins 231 and 241 located intermediately of their ends, and their free ends opposite ring 2 carry rollers 232 and 242.
  • the rollers are caused to abut against each other by a compression spring 25 acting on the lever arms on the side of pivots 231, 241 opposite rollers 232, 242.
  • Such roller abutment limits the opening of the gripping ring 2.
  • a bifurcated lever 3 which can pivot about a pin 30, and a wedge-shaped downwardly inclined projection 31 located on the side of pin 30 opposite the lever furcations is arranged directly in front of the rollers 232 and 242.
  • the other, bifurcated, end of the twoarmed lever 3 is connected with a drive part 32, which is connected with a rod 33 guided in the housing of the gripping arm 1 and capable of being moved vertically through the rod 33 by a solenoid 12.
  • a compression spring 34 encircling the rod 33 and engageable with a collar on the lower rod end reacts against the shell of the gripping arm 1 to press the rod 33 and the drive part 32 normally downward thereby holding wedge 31 out of engagement with rollers 232 and 242.
  • the upper end of the gripping opening or bore of the gripping ring 2 is normally closed by a vertically movable plate 4 which is arranged in the head of the gripping arm 1 and pressed toward ring 2 by a spring 40.
  • the gripping arm is lowered together with the centering plate 11 and the gripping ring 2 over the core or tube of a yarn package, so that the core comes to lie in the bore of the ring 2.
  • the core which comes to extend through the opening of the gripping ring abuts against the abutment plate 4 at the top end of the bore and presses the plate away from the gripping ring 2 against the force of the spring 40.
  • the solenoid 12 is actuated so that the rod 33 is attracted by it and moves upwards together with the drive part 32 in a vertical direction.
  • the pivoting movement of the bifurcated lever 3 effected thereby causes the wedge-like end 31 to be thrust between the rollers 232 and 242 so that the latter are pushed apart against the force of the spring 25.
  • the levers 23 and 24 pivot about the pins 231 and 241 and now exert a tension force on the ends 21 and 22 adjacent to the gap in the gripping ring 2 so that the ends are moved towards each other.
  • the gripping ring 2 is thus caused to contract and becomes pressed against the outer periphery of the tube 5.
  • the gripping ring consists of two ring halves or segments 26 and 27, whose adjacent ends 260 and 270 are attached at the pivot points 261 and 271 which are stationary with respect to the housing or shell of the gripping arm.
  • the levers 23 and 24 are joined in a fixed manner with the opposite ends 262 and 272 of the two ring segments 26 and 27, adjacent to the variable gap in the composite ring.
  • the levers 23 and 24 are operated in the manner already explained so that the ring segments 26 and 27 are drawn together by the tension forces acting at their ends 262 and 272 adjacent to the interruption in the ring and the ring segments accordingly grip the upper end of the core or tube 5 lying between them.
  • ends 260 .and 270 can be anchored in a manner different to that shown.
  • both ends can be anchored at a single point and in this case the ends 260 and 2'70 would overlap or be connected by means of resilient intermediate members.
  • the gripping ring or element in accordance with the invention comprises two superposed interrupted secondary gripping rings 28, 29 of elastic material arranged so that the interruptions in them between their respective ends (281, 282 and 291, 292) are circumferentially offset (see FIG. 4).
  • the interrupted secondary rings 28 and 29 are connected with each other by interrupted intermediate rings 28, 29 of non-elastic material in the manner indicated by connecting lines A.
  • the superposed secondary rings are shown in exploded relationship in FIG. 4. It will be seen that the end 281 adjacent to the interruption of the gripping ring 28 is connected with the intermediate ring 28' while the end 282, adjacent to the interruption, is connected with the intermediate ring 29'.
  • the end 291 adjacent to the interruption in the ring of the ring 29 is connected in a fixed manner with the intermediate ring 29 and the end 292 adjacent to the gap is connected in a fixed manner with the intermediate ring 28.
  • a pressing force acting at the ends adjacent to the interruptions of the gripping rings 28 and 29 can be produced by means of gear wheels (which are not shown) for example.
  • gear wheels are connected respectively with the ends 282 and 292 in a fixed manner and mesh with a rack which can be moved along the longitudinal axis of the gripping arm.
  • the invention has been described with reference to a travelling cop doffing device. It can, however, also be used successfully with stationarily arranged doffing devices.
  • a gripping device for dofi'mg yarn packages wound on tubes on ring spinning and ring twisting machinery comprising an interrupted gripping ring engageable with a yarn package tube end portion and having two spaced free ends, and drive means connected with said ends for positively moving said ends towards each other and thereby contracting said gripping ring for pressing it against the outer suface of such tube, said interrupted with a yarn package tube end portion, said interrupted ring comprising a flexible nonelastic annular band and an elastic lining fixed on said band and having two spaced free ends, and drive means connected with said ends for positively moving said ends towards each other and thereby contracting said gripping ring for pressing it against the outer surface of such tube.
  • HcCOY (31830 JR. C, 1*IARt32EMZI, DANE? Arresting Officer Commissioner of Patents

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00221864A 1971-02-05 1972-01-31 Gripping means for doffing yarn packages Expired - Lifetime US3813866A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712105344 DE2105344A1 (de) 1971-02-05 1971-02-05 Greifer zum Abziehen voller Garnkörper

Publications (1)

Publication Number Publication Date
US3813866A true US3813866A (en) 1974-06-04

Family

ID=5797850

Family Applications (1)

Application Number Title Priority Date Filing Date
US00221864A Expired - Lifetime US3813866A (en) 1971-02-05 1972-01-31 Gripping means for doffing yarn packages

Country Status (8)

Country Link
US (1) US3813866A (enrdf_load_stackoverflow)
CH (1) CH529854A (enrdf_load_stackoverflow)
DE (1) DE2105344A1 (enrdf_load_stackoverflow)
ES (1) ES399457A1 (enrdf_load_stackoverflow)
FR (1) FR2124465B1 (enrdf_load_stackoverflow)
GB (1) GB1385334A (enrdf_load_stackoverflow)
IT (1) IT947189B (enrdf_load_stackoverflow)
NL (1) NL7201491A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339912A (en) * 1979-09-28 1982-07-20 Societe Alsacienne De Constructions Mecaniques De Mulhouse Device for gripping yarn supports on revolving-spindle textile machines
US5090191A (en) * 1989-04-11 1992-02-25 Zinser Textilmaschinen Gmbh Tube gripping apparatus for a textile machine
US5136833A (en) * 1989-07-24 1992-08-11 Palitex Project Company Gmbh Method and apparatus for removing yarn package and transport adapter from a spindle assembly of a yarn processing machine and securing the free end portion of yarn for transport
US5544828A (en) * 1991-11-06 1996-08-13 Maschinenfabrik Niehoff Gmbh & Co. Kg Automatic bobbin-changing device having a vertical rotating axis
US20150016927A1 (en) * 2012-03-16 2015-01-15 Maschinenfabrik Niehoff Gmbh & Co. Kg Bobbin Changing Device

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD203341A1 (de) * 1982-04-01 1983-10-19 Textilmaschinenbau Grossenhain Huelsengreifeinrichtung mit selbsttaetigem toleranzausgleich
DE4420039B4 (de) * 1993-07-23 2004-01-29 Maschinenfabrik Rieter Ag Spinnmaschine
DE102019128613A1 (de) * 2019-10-23 2021-04-29 Saurer Spinning Solutions Gmbh & Co. Kg Ringspinnmaschine sowie Kopsgreifer

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1463479A (en) * 1921-10-29 1923-07-31 William W Miller Doffing and donning mechanism
US2862756A (en) * 1955-05-31 1958-12-02 Robert W Larson Pulpwood grapple
US2962856A (en) * 1958-06-10 1960-12-06 Deering Milliken Res Corp Bobbin handling arrangement
US3053561A (en) * 1960-12-07 1962-09-11 Hamel Richard Bottle handling device
GB1012789A (en) * 1963-07-04 1965-12-08 Schubert & Salzer Maschinen Textile machinery
US3307340A (en) * 1963-04-01 1967-03-07 To Yo Da Automatic Loom Works Apparatus for continuously effecting automatic bobbin exchange on spinning machine
US3398522A (en) * 1967-05-08 1968-08-27 Leesona Corp Textile machine
US3442072A (en) * 1963-09-04 1969-05-06 Matteo Gillono Device for loading and unloading spindles
US3566597A (en) * 1968-01-26 1971-03-02 Az Cit Carrelli Ind Fessili So Device for automatically substituting empty bobbin tubes for charged bobbins in ring spinning and twisting machines
US3633959A (en) * 1968-08-05 1972-01-11 John K Mccollough Bobbin grasper

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1463479A (en) * 1921-10-29 1923-07-31 William W Miller Doffing and donning mechanism
US2862756A (en) * 1955-05-31 1958-12-02 Robert W Larson Pulpwood grapple
US2962856A (en) * 1958-06-10 1960-12-06 Deering Milliken Res Corp Bobbin handling arrangement
US3053561A (en) * 1960-12-07 1962-09-11 Hamel Richard Bottle handling device
US3307340A (en) * 1963-04-01 1967-03-07 To Yo Da Automatic Loom Works Apparatus for continuously effecting automatic bobbin exchange on spinning machine
GB1012789A (en) * 1963-07-04 1965-12-08 Schubert & Salzer Maschinen Textile machinery
US3408806A (en) * 1963-07-04 1968-11-05 Schubert & Salzer Maschinen Apparatus for the continuous replacement of full cops with empty cops
US3442072A (en) * 1963-09-04 1969-05-06 Matteo Gillono Device for loading and unloading spindles
US3398522A (en) * 1967-05-08 1968-08-27 Leesona Corp Textile machine
US3566597A (en) * 1968-01-26 1971-03-02 Az Cit Carrelli Ind Fessili So Device for automatically substituting empty bobbin tubes for charged bobbins in ring spinning and twisting machines
US3633959A (en) * 1968-08-05 1972-01-11 John K Mccollough Bobbin grasper

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4339912A (en) * 1979-09-28 1982-07-20 Societe Alsacienne De Constructions Mecaniques De Mulhouse Device for gripping yarn supports on revolving-spindle textile machines
US5090191A (en) * 1989-04-11 1992-02-25 Zinser Textilmaschinen Gmbh Tube gripping apparatus for a textile machine
US5136833A (en) * 1989-07-24 1992-08-11 Palitex Project Company Gmbh Method and apparatus for removing yarn package and transport adapter from a spindle assembly of a yarn processing machine and securing the free end portion of yarn for transport
US5544828A (en) * 1991-11-06 1996-08-13 Maschinenfabrik Niehoff Gmbh & Co. Kg Automatic bobbin-changing device having a vertical rotating axis
US20150016927A1 (en) * 2012-03-16 2015-01-15 Maschinenfabrik Niehoff Gmbh & Co. Kg Bobbin Changing Device
US9758341B2 (en) * 2012-03-16 2017-09-12 Maschinenfabrik Niehoff Gmbh & Co. Kg Bobbin changing device

Also Published As

Publication number Publication date
ES399457A1 (es) 1974-11-01
NL7201491A (enrdf_load_stackoverflow) 1972-08-08
GB1385334A (en) 1975-02-26
CH529854A (de) 1972-10-31
IT947189B (it) 1973-05-21
DE2105344A1 (de) 1972-11-09
FR2124465B1 (enrdf_load_stackoverflow) 1974-04-05
FR2124465A1 (enrdf_load_stackoverflow) 1972-09-22

Similar Documents

Publication Publication Date Title
US2533731A (en) Bobbin for knitting yarn and the like
US3813866A (en) Gripping means for doffing yarn packages
US3546870A (en) Method and machine for automatically relocating spinning frame travelers
US3221374A (en) Can-centering apparatus
US3154909A (en) Apparatus for automatically exchanging bobbins in spinning machines
GB843668A (en) An improved mechanism for winding strands subject to high constrictive force
US3491526A (en) Yarn severing arrangement for textile spindles
US3929297A (en) Automatic winding machine having a clamping device
US3036421A (en) Spindle drive control
GB1391303A (en) Apparatus for winding yarn
US4777792A (en) Gripping device for tubes or the like, for apparatus for automatically replacing these in textile machines
US3350868A (en) Automatic doffing apparatus
US3154260A (en) Capstans
ES8102216A1 (es) Un dispositivo para la rotura y eliminacion de hebras o me- chas con el fin de evitar defectos debidos a la rotura de una hebra cuando se combinan dos hebras fibrosas no hiladas
US3118625A (en) Filament winding device
US4145010A (en) Device for winding synthetic fibers
US2819582A (en) Yarn feeding means
US1962757A (en) Winding machine
US3364293A (en) Method of preventing knot breakage during drawing of yarn
US2434210A (en) Guide mechanism
US2897715A (en) Braider carrier
GB2000533A (en) Continuous winding of yarn
GB883693A (en) A control device for a textile drafting mechanism
US3103779A (en) Tube for ring spinning frame and apparatus for connecting a yarn end to said tube
US1821656A (en) Bobbin holder for creels of spinning frames and the like