US3714770A - Inflatable gripper for handling spools of textile machines - Google Patents

Inflatable gripper for handling spools of textile machines Download PDF

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Publication number
US3714770A
US3714770A US00087873A US3714770DA US3714770A US 3714770 A US3714770 A US 3714770A US 00087873 A US00087873 A US 00087873A US 3714770D A US3714770D A US 3714770DA US 3714770 A US3714770 A US 3714770A
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US
United States
Prior art keywords
wall
gripper
folds
improvement
spool
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
US00087873A
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English (en)
Inventor
E Rothke
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
Zinser Textilmaschinen GmbH
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Filing date
Publication date
Application filed by Zinser Textilmaschinen GmbH filed Critical Zinser Textilmaschinen GmbH
Application granted granted Critical
Publication of US3714770A publication Critical patent/US3714770A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01H9/003—Graspers operating under the action of a fluid

Definitions

  • This invention relates to a mandrel-like gripper assembly for engaging and firmly holding spools of textile machines and is of the type which may be introduced at least partially into the hollow interior of the spool.
  • the gripper proper which projects beyond an associated support, is formed as a hollow body having a resilient wall that is radially expandable by a pressure medium admitted to the inside of the gripper for causing its expandable wall to be firmly clamped against the inner wall of the spool.
  • spools there are meant any kind of transportable cores, bobbins or sleeves on which a yarn package may be wound and which are adapted to be internally grasped by an expandable gripper of the afore-outlined type.
  • the gripper wall has the shape of a circular cylinder. It is a drawback of such structures that a relatively large pressure is needed for its expansion. Also, its cross-sectional rigidity is relatively slight in its expanded condition. Thus, in order to withstand the loads and stresses to which the gripper may be exposed, it has to be made of particularly high-strength, and hence expensive synthetic materials.
  • the objects of the invention are to provide improved grippers of the aforenoted type in which the disadvantages of known grippers no longer exist; which, particularly when used in automatic spool changing mechanisms of spinning or twisting machines, meet the requirements in a manner superior to grippers known heretofore; which have a superior operational safety and which may firmly and securely engage spools of widely varying inner diameters.
  • a gripper body of the aforenoted type the expandable wall of which includes parallel, longitudinally extending and circumferentially spaced folds or creases.
  • a gripper structure according to the invention is expandable by pressure that is smaller than that required for inflating grippers having a cylindrical wall. Consequently, the gripper structure according to the invention is exposed to lesser stresses and thus its life expectancy is greater. Further, under similar conditions, it may be expanded to a significantly greater extent than a cylindrical gripper having a comparable wall thickness.
  • the longitudinal folds render the gripper wall more rigid when expanded so that it is more resistant to bending or buckling forces than grippers having a cylindrical wall structure.
  • Such an increased rigidity is particularly advantageous in cases when the yarn, for some reason, has not been cut and the fully wound spool is moved away by the gripper from the spindle. In such instances the taut yarn exerts a pulling force on the 'spool.
  • the increased rigidity of the gripper body diminishes a lateral yielding of the gripper to such pulling force and thus not only prevents a wrong positioning of the spool which may cause damage thereto, but also causes the desired breakage of the yarn. Stated in different terms, by virtue of the increased rigidity of the gripper body, its resistance to the pulling of the yarn will cause breakage of the latter before the spool is pulled into an undesired, wrong lateral position. Because of the smaller stresses to which the gripper according to the invention is exposed, it may be made of a synthetic material of lesser strength which is less expensive and easier workable than the synthetic materials used heretofore for known cylindrical grippers.
  • novel expandable gripper body may be manufactured in a single operational step by pressing or injection molding of a synthetic material, rubber or similar elastic or flexible material.
  • FIG. I is a partially sectional side elevational view of a preferred gripper assembly according to the invention.
  • FIG. 2 is a sectional view along line IIII of FIG. 1.
  • the gripper assembly 10 includes a coupling member 11, a clamping sleeve 11' and a mandrel-like gripper body 12 made of a flexible elastic synthetic material.
  • the coupling member 11 has three functions: first, by means of its threaded terminal portion 14 it secures the entire gripper assembly 10 to the gripper rail 17; secondly, the collar portion 15 of the coupling member 11, in cooperation with the clamping sleeve' 11, firmly holds the gripper body 12 by its cylindrical terminal portion 35 and thirdly, by means of its throughgoing axial bore 16, the coupling member 11 admits pressurized fluid, preferably air, from the inner space 19 of gripper rail 17 into the inside of gripper body 12 for the purpose of inflating the same.
  • pressurized fluid preferably air
  • the inner space 19 of the gripper rail 17 is connected to a pressure source, not shown.
  • the gripper body 12 is shown in a deflated condition in which it may be introduced with a clearance into and withdrawn from the inner space of a spool 23.
  • pressure medium By introducing pressure medium into the inner space 20 of the gripper body 12, the latter may be expanded until it firmly engages the inner wall 22 of the spool 23.
  • the gripper body 12 has a circumferential wall 29 and a conically narrowing terminal portion or wall 30 integral therewith. From the terminal wall portion 30 to the location indicated at 32 there extends a gripper body portion 33 which has an approximately constant wall thickness and which is inscribable in a cylindrical shell. This body portion 33 serves for gripping the spool and has, according to the invention, a plurality preferably 4-6 of longitudinally extending, circumferentially spaced folds or creases 13 which are disposed parallel to the gripper axis. As seen in FIG. 2, the wall portion 33 whichhas an undulated cross sec tion, is composed of a total of five identical axial folds 13.
  • the axially parallel, circumferentially spaced elongated depressions or grooves formed by adjacent folds l3 taper both in the direction of the free tip of the gripper body and in the direction of the coupling member 11.
  • the folds l3 terminate in the conical end portion 30, about midway from the beginning of this portion and its terminal tip, and, on the other hand, they terminate immediately below the clamping sleeve 11'.
  • the gripper body 12 is preferably so designed that the wall'thicknesses are approximately constant even in those zones of the folds which adjoin the gripper wall portion 33.
  • the terminal por- It is, however, often a requirement that the gripper be capable of a limited transversal elastic deflection. This enables the gripper to automatically correct, by lateral deflection, any initial misalignment between the gripper and the spool during the introduction of the former in a deflated condition into the latter. For this reason, it is usually more advantageous to fixedly clamp radially expandable wall, the cross section of which having a c osed configuration surrounding said axis,
  • said wall including a plurality of axially parallel, circumferentially spaced folds.
  • tion 30 is integral with the gripper body portion 33, it is feasible to make this terminal'portion separately, for example, of a rigid material.
  • a gripper body portion which has an undulated cross section and which is held at both ends by a unitary support means.
  • the radial strength of the gripper is additionally increasedsince both ends of the gripper body portion are fixedly held.
  • said gripper body includes a free terminal portion ad- 40 joining said first-named portion of said wall; said folds extend into and terminate in said free terminal portion.
  • said gripper assembly includes means for securely holding said gripperv body, said gripper body includes a cylindrical wall portion axially adjacent said'folds and firmly clamped in saidlast-named means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Manipulator (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
US00087873A 1969-11-07 1970-11-09 Inflatable gripper for handling spools of textile machines Expired - Lifetime US3714770A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1956035A DE1956035C3 (de) 1969-11-07 1969-11-07 Zapfenartiger Greifer einer Hulsengreifvorrichtung

Publications (1)

Publication Number Publication Date
US3714770A true US3714770A (en) 1973-02-06

Family

ID=5750397

Family Applications (1)

Application Number Title Priority Date Filing Date
US00087873A Expired - Lifetime US3714770A (en) 1969-11-07 1970-11-09 Inflatable gripper for handling spools of textile machines

Country Status (5)

Country Link
US (1) US3714770A (enExample)
CA (1) CA938924A (enExample)
CH (1) CH513071A (enExample)
DE (1) DE1956035C3 (enExample)
GB (1) GB1297656A (enExample)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808788A (en) * 1972-03-16 1974-05-07 Nuova San Giorgio Spa Grasping device for doffing full bobbins and reloading empty tubes in a spinning frame
US3835633A (en) * 1973-04-30 1974-09-17 Zinser Textilmaschinen Gmbh Gripper for yarn carriers and the like
US4079980A (en) * 1975-02-27 1978-03-21 Phoenix Gummiwerke Ag Device for transporting annular running strips for pneumatic tires
US4438623A (en) * 1980-11-13 1984-03-27 Rieter Machine Works Ltd. Gripper apparatus on a ring spinning or ring twisting machine
US4445323A (en) * 1981-10-29 1984-05-01 Rieter Machine Works Limited Apparatus for the conjoint gripping of bobbins on a ring spinning or ring-twisting machine
US4456115A (en) * 1982-05-03 1984-06-26 Eli Lilly And Company Syringe inspection apparatus
US4500247A (en) * 1982-05-03 1985-02-19 Eli Lilly And Company Syringe inspection apparatus
US4713952A (en) * 1986-02-05 1987-12-22 Westinghouse Electric Corp. Tool and method for rotopeening the peripheral tubes in a tubesheet
US4771526A (en) * 1985-10-07 1988-09-20 Westinghouse Electric Corp. Sleeving of steam generators
US5622591A (en) * 1995-05-15 1997-04-22 Eastman Kodak Company Method for thermally attaching an element to a mounting surface
WO1997019785A1 (en) * 1995-11-30 1997-06-05 Dave Lapoint Automobile wheel finishing apparatus
US6241228B1 (en) 1999-10-26 2001-06-05 Charles Chupick Free-floating hydraulic clamping device using expandable arbor
US6260783B1 (en) * 1998-02-03 2001-07-17 Georgia Tech Research Corp. Automated yarn creeling device
US20070212441A1 (en) * 2006-03-10 2007-09-13 Husky Injection Molding Systems Ltd. Molded part picker
EP2031104A3 (en) * 2007-08-28 2010-01-06 Murata Machinery, Ltd. Residual-yarn removing device and picker member
US11312171B1 (en) 2021-07-12 2022-04-26 Richard Raymond Smith, Jr. Can graphics concealment through pigmented overvarnish

Families Citing this family (4)

* 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
DE4012836A1 (de) * 1990-04-23 1991-10-24 Neuenhauser Maschinenbau Havo Vorrichtung und verfahren zur erkennung der ist-lage von garnspulen
DE4016466A1 (de) * 1990-05-22 1991-11-28 Schlafhorst & Co W Textilmaschine, insbesondere automatische spulmaschine, mit einem transportsystem, in dem voneinander unabhaengige paletten zirkulieren
JP3572747B2 (ja) * 1995-09-08 2004-10-06 村田機械株式会社 残糸処理装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367098A (en) * 1964-12-19 1968-02-06 Zinser Textilmaschinen Gmbh Method and apparatus for exchanging tubes on textile machines
US3462934A (en) * 1967-04-11 1969-08-26 Zinser Textilmaschinen Gmbh Apparatus for gripping bobbins on textile machines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367098A (en) * 1964-12-19 1968-02-06 Zinser Textilmaschinen Gmbh Method and apparatus for exchanging tubes on textile machines
US3462934A (en) * 1967-04-11 1969-08-26 Zinser Textilmaschinen Gmbh Apparatus for gripping bobbins on textile machines

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3808788A (en) * 1972-03-16 1974-05-07 Nuova San Giorgio Spa Grasping device for doffing full bobbins and reloading empty tubes in a spinning frame
US3835633A (en) * 1973-04-30 1974-09-17 Zinser Textilmaschinen Gmbh Gripper for yarn carriers and the like
US4079980A (en) * 1975-02-27 1978-03-21 Phoenix Gummiwerke Ag Device for transporting annular running strips for pneumatic tires
US4438623A (en) * 1980-11-13 1984-03-27 Rieter Machine Works Ltd. Gripper apparatus on a ring spinning or ring twisting machine
US4445323A (en) * 1981-10-29 1984-05-01 Rieter Machine Works Limited Apparatus for the conjoint gripping of bobbins on a ring spinning or ring-twisting machine
US4456115A (en) * 1982-05-03 1984-06-26 Eli Lilly And Company Syringe inspection apparatus
US4500247A (en) * 1982-05-03 1985-02-19 Eli Lilly And Company Syringe inspection apparatus
US4771526A (en) * 1985-10-07 1988-09-20 Westinghouse Electric Corp. Sleeving of steam generators
US4713952A (en) * 1986-02-05 1987-12-22 Westinghouse Electric Corp. Tool and method for rotopeening the peripheral tubes in a tubesheet
US5622591A (en) * 1995-05-15 1997-04-22 Eastman Kodak Company Method for thermally attaching an element to a mounting surface
US5743995A (en) * 1995-05-15 1998-04-28 Eastman Kodak Company Apparatus for thermally attaching an element to a mounting surface
WO1997019785A1 (en) * 1995-11-30 1997-06-05 Dave Lapoint Automobile wheel finishing apparatus
US5857901A (en) * 1995-11-30 1999-01-12 Lapoint; Dave A. Automobile wheel finishing apparatus
US6260783B1 (en) * 1998-02-03 2001-07-17 Georgia Tech Research Corp. Automated yarn creeling device
US6241228B1 (en) 1999-10-26 2001-06-05 Charles Chupick Free-floating hydraulic clamping device using expandable arbor
US6978988B2 (en) 1999-10-26 2005-12-27 Charles Chupick Free-floating hydraulic clamping device with edge-gripping arbor
US20070212441A1 (en) * 2006-03-10 2007-09-13 Husky Injection Molding Systems Ltd. Molded part picker
EP2031104A3 (en) * 2007-08-28 2010-01-06 Murata Machinery, Ltd. Residual-yarn removing device and picker member
US11312171B1 (en) 2021-07-12 2022-04-26 Richard Raymond Smith, Jr. Can graphics concealment through pigmented overvarnish

Also Published As

Publication number Publication date
CH513071A (de) 1971-09-30
DE1956035A1 (de) 1971-05-13
DE1956035B2 (de) 1978-03-16
DE1956035C3 (de) 1978-11-16
CA938924A (en) 1973-12-25
GB1297656A (enExample) 1972-11-29

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