US3544016A - Winding mandrel for packaging glass strands - Google Patents

Winding mandrel for packaging glass strands Download PDF

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Publication number
US3544016A
US3544016A US711776A US3544016DA US3544016A US 3544016 A US3544016 A US 3544016A US 711776 A US711776 A US 711776A US 3544016D A US3544016D A US 3544016DA US 3544016 A US3544016 A US 3544016A
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US
United States
Prior art keywords
tube
mandrel
fingers
strand
winding
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
US711776A
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English (en)
Inventor
Cecil R Cunningham
James C Rushton
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.)
Owens Corning
Original Assignee
Owens Corning Fiberglas Corp
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 Owens Corning Fiberglas Corp filed Critical Owens Corning Fiberglas Corp
Application granted granted Critical
Publication of US3544016A publication Critical patent/US3544016A/en
Assigned to WILMINGTON TRUST COMPANY, WADE, WILLIAM, J. reassignment WILMINGTON TRUST COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OWENS-CORNING FIBERGLAS CORPORATION
Assigned to OWENS-CORNING FIBERGLAS CORPORATION, A CORP. OF DE. reassignment OWENS-CORNING FIBERGLAS CORPORATION, A CORP. OF DE. TERMINATION OF SECURITY AGREEMENT RECORDED NOV. 13, 1986. REEL 4652 FRAMES 351-420 Assignors: WADE, WILLIAM J. (TRUSTEES), WILMINGTON TRUST COMPANY, A DE. BANKING CORPORATION
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
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/20—Force systems, e.g. composition of forces
    • 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
    • B65H2701/312—Fibreglass strands
    • B65H2701/3122—Fibreglass strands extruded from spinnerets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S242/00—Winding, tensioning, or guiding
    • Y10S242/92—Glass strand winding

Definitions

  • Carr ABSTRACT A rotatable mandrel for holding a tube on which a glass strand is wound into a package which has elongated fingers extending lengthwise of the mandrel in closely adjoining relation, said fingers being loosely held for outward movement under the centrifugal force of the rotation of the mandrel whereby the tube is held to its greatest diameter, each of said fingers having a groove along its longitudinal centerline and tapered edges whereby on termination of the rotating movement of the mandrel and of the associated application of centrifugal force against the tube, the tube is constricted by the tension of the wound strand thereon and to effect an accommodating reduction in diameter, portions of the tube collapse and enter into the depressed areas of the center grooves and tapered edges ofthe fingers.
  • the present invention relates generally to apparatus and methods for drawing and winding a strand of continuous glass filaments. More specifically the invention pertains to a mandrel for holding a tube upon which such a fibrous glass strand is wound into a package and a method of utilizing such a mandrel in conjunction with a collapsible tube.
  • This accumulated high compression force in the completely wound package has the objectionable effect of constricting the packaging tube into a smaller diameter.
  • This constricting force may make it difficult to remove the tube from the mandrel. It also is inclined to bind the turns of the glass strand so tightly together around the tube that the unwinding operation 1 for subsequent use or treatment of the strand, such as twisting and plying, is unsatisfactory.
  • a resilient plastic tube which is expandable while the strand is being wound and then returns to a reduced diameter has worked quite effectively in relieving the tension of the wound strand and releasing the strand quite freely in later unwinding operations of the strand from the tube.
  • the centrifugal force is nullified and the tube is then free to contract under the constricting stress of the wound strand and to return to its original diameter.
  • the tube is still loose enough upon the mandrel to be easily removed.
  • the expanded form of the tube during rotation of the mandrel and the return of the tube to its original size at the termination of the rotation reduces the binding between turns of the strand whereby subsequent unwinding of the strand from the tube is smoothly effected.
  • a further object of the invention is a mandrel suitable for use with a collapsible tube composed of material which does not possess substantial elasticity or rigidity.
  • the successful performance of the invention is further advanced through the use of a tube which returns to its original diameter through straightening of its collapsed portions under outward thrust of the fingers of the mandrel.
  • FIG. 1 is a diagrammatic illustration of a conventional ap paratus for forming and winding a glass strand into a package;
  • FIG. 2 is a perspective view of one of the fingers of the mandrel on which the packaging tube is mounted;
  • FIG. 3 is an end view of the mandrel
  • FIG. 4 is a side elevational view thereof
  • FIG. 5 is a partial sectional view of the mandrel taken on line 5-5 of FIG. 4 showing three adjoining fingers in their most outwardly extended position;
  • FIG. 6 is a similar partial sectional view of the mandrel with the packaging tube shown thereon and the fingers slightly depressed under the tube;
  • FIG. 7 is the same sectional view of the mandrel showing a preliminary portion of a strand wound on the packaging tube.
  • FIG. 8 is a like sectional view of the mandrel on which a full package of the strand has been collected, and shows the collapsed portions of the tube after rotation of the mandrel has been terminated and the compressive force of the wound strand has constricted the tube.
  • FIG. 1 is depicted diagrammatically a molten glass feeding bushing 12 with outlet nipples 14 projecting downwardly therefrom. Issuing from the outlet nipples 14, generally two to four hundred in number, are small streams of molten glass which are attenuated into filaments R6. The filaments are drawn downwardly by the rotation of the mandrel 18 of the winding mechanism 20. Not far below the bushing 12 the filaments 16 are coated with a size by the applicator 24 and are then brought together to form strand 26 by the gathering action of grooved shoe 25.
  • a traversing device 27 of conventional design diagrammatically depicted reciprocates the strand 26 back and forth Iongitudinally of the surface of the packaging tube 22 mounted on the mandrel 18.
  • the flanged tube holding fingers 29 of the mandrel have their lower ends lodged in dove tail slots 31 extending longitudinally of the body 32 of the mandrel 18 for substantially the full length thereof and are radially locked in the slots by their dove tail shaped lower portions and longitudinally by end cap 33 and retaining ring 35.
  • the mandrel I8 is secured to the tapered motor spindle 37, fragmentarily shown in FIG. 4, which extends outwardly from the housing of the winding mechanism 20.
  • a member 38 encircles the spindle 37 and includes hearings to support the spindle and mandrel.
  • the mandrel is approximately 21 inches long and there are 12 fingers. With the fingers extended the diameter of the mandrel is approximately six and thirty-six hundredths of an inch.
  • the outer flanged portions of the fingers are sufficiently broad to pinching of the tube together constitute a continuous circumferential surface around the mandrel when the fingers are depressed to the limit of their inward movement within the slots 31.
  • FIG. 6 a packaging tube 22 has been placed on the mandrel with a slight depression of the fingers 29 against the thrust of the springs 39.
  • the spring tension retains the tube in position until rotation of the mandrel is initiated and is not sufficient to impede later removal of the tube.
  • the starting end of the glass strand is manually tied around the tube.
  • the winding drive is set in operation. This may be accomplished through release of a clutch which has been held in drive disengaging position by the foot of the operator while he placed the tube on the mandrel and fastened the leading end of the glass strand around the tube.
  • the tube accelerates to its selected speed (which may be ten thousand or more revolutions per minute) the fingers are propelled by centrifugal force outwardly against the interior of the tube.
  • One type of packaging tube adaptable to the practice of this invention has in its original form its greatest diameter such as the tube shown placed on the mandrel in FIG. 6.
  • This tube may have two or three plies and be composed of a paper or other fibrous base strengthened sufficiently with a size or binder to make it substantially nonstretchable while retaining considerable flexibility.
  • One tube of this type which has performed well has an inner diameter of approximately 6% inches and a wall thickness of .030 of an inch.
  • FIG. 7 a portion of the mandrel with the tube 22 thereon is pictured under rotation wherein the winding of the strand 26 on the tube has been started with the attendant continuous drawing of the filaments 16 from the bushing I2 and their gathering into the strand 26.
  • the traversing device 27 evenly distributes the strand back and forth over the length of the tube.
  • the high rotational speed of the mandrel applies such a pulling tension on the strand being collected that the strand is stretched to a substantial proportion of the approximately 3- percent limit in its estimated possible elongation. This extension in length of the strand is retained while the strand is wound.
  • the major contraction of the tube is effected when the packaging of the strand upon the tube has been completed and the rotation of the mandrel has been terminated. Then the strand through its inherent elasticity tends to shorten to its original length. Its previous elongation under the pulling force of the rotation may vary within an approximate range between 1% and 3 percent dependent upon the rotational speed of the mandrel, the length of the winding operation, and the glass composition. Both greater winding speed and a long winding period increase the elongation.
  • the packaging of the strand 26 has been completed and rotation of the mandrel 18 brought to a stop.
  • the tube 22 has been constricted about 2 percent of its diameter by the shortening of the strand to its normal length from the elongation effected by the winding process. In extreme cases the desired reduction in the diameter of the tube may be as high as 6 percent.
  • the fingers 29 are shown depressed somewhat above the limit of their inward movement which in this embodiment is set by abutment of adjacent edges of the fingers. This inward limit could also be determined in mandrels of alternate design by the inward ends of the fingers reaching the bottom of the slots 31 or the bottom of the finger flanges seating upon the flat lands of the mandrel body 32.
  • the corresponding reduction in the diameter of the tube 22 is achieved through collapsing of the tube portions above the longitudinal center grooves 43 and the indented tapered edges 45 of the fingers which together constitute in this instance about one-third of the outer faces of the fingers. In the spaces provided by the grooves and tapered edges the surplus tube portions are gathered in wrinkled form as indicated at 220. While the basic nature of the fibrous composition of the tubes supports such wrinkling, the humid atmosphere in the winding zone is a facilitating factor.
  • the filaments of the strand are straightened and brought tightly together by the pulling force in opposition to any individual tendency to variously curl.
  • the strand may also be considered to be unnaturally curved about the tube and to have some propensity to straighten.
  • the new reduced diameter of the tube is retained until it is used again. Any moisture absorbed by it during the original winding operation is lost during storage or subsequent drawing of the strand from the tube.
  • one manufactured with an initial creped form may be utilized.
  • the creping should be controlled to permit at least a 3 percent increase in diameter.
  • When later collapsed the creping of the tube would be concentrated in the spaces of the grooves 43 and tapered edges 45.
  • the various features which contribute to the success of the invention include fingers with outer flanges which cover as completely as possible the full periphery of the mandrel and thus provide a minimum space between the fingers for entry of portions of the tube when under collapsing pressure. Such entry not only may jam the fingers preventing their depression but also may allow portions of the tube to be gripped between adjacent fingers and consequently prevent removal of the tube from the mandrel.
  • the principal feature of the mandrel of this invention is the provision of depressed areas in which excess portions of the tube may be gathered to accommodate the required reduction in the diameter of the tube.
  • depressed areas of other forms and extent may be just as effective. Such areas should run fairly uniformly lengthwise of the fingers and be regularly spaced circumferentially of the mandrel.
  • Alternate forms may include two offset smaller grooves in place of the single center groove.
  • tapered edges In addition to providing gathering space for wrinkling portions of the tube, as noted above, the tapered edges have the further important function of reducing the possibility of the tube being pinched between the edges of adjoining fingers. In some instances tapered edges alone may serve the full purpose of the invention.
  • the invention involves a mandrel of a special structure adapted for allowing shrinkage of a tube of a nonresilient or inelastic material and a method utilizing such a mandrel with a tube of the stated nature.
  • a mandrel for carrying a tube upon which a glass strand is wound having a plurality of fingers extending lengthwise of the mandrel, the outer faces of the fingers being closely arrayed and constituting the outer surface of the mandrel, means holding and guiding said fingers for limited radial movement, the outer surfaces of said fingers being majorly curved to together form a cylindrical contour, and depressed areas in said outer surfaces of said fingers positioned along longitudinal portions of said surfaces.
  • a mandrel according to claim 1 in which the fingers are roughly of T cross section with the lower portion of the T form positioned in a guiding slot and the outer edges of the top portion of the T are substantially in contact when the fingers are in the most inward position of their radial movement.
  • a mandrel and a tube carried on the mandrel upon which a glass strand is wound said mandrel having a plurality of fingers extending lengthwise of the mandrel, the outer faces of the fingers being closely arrayed and constituting the outer surface of the mandrel, and means holding and guiding said fingers for limited radial movement, the outer surfaces of said fingers being majorly curved to together form a cylindrical contour, and depressed zones of substantial area in said outer surfaces of said fingers positioned along longitudinal portions of said surfaces, said fingers being held outwardly under centrifugal force during rotation of the mandrel and holding the tube in a stretched condition and the fingers being depressed inwardly by constriction of the wound strand at the termination of the rotation, said tube being collapsible and portions of said tube collapsing into said depressed zones under constriction of the glass strand.
  • a rotatable mandrel in combination with a packaging tube for a fibrous glass strand wound thereon for mounting on said mandrel, the mandrel having an expandable generally cylindrical and continuous peripheral surface and the packaging tube being of a taut, flexible nonelastic composition, said mandrel being characterized in that there are shallow depressed zones of substantial area in its peripheral surface whereby the tube may be held tautly when the cylindrical peripheral surface is in expanded condition and portions of the tube may collapse and enter the depressed zones when the cylindrical peripheral surface is in a contracted condition.
  • a mandrel for carrying a tube on which a fibrous glass strand is wound having longitudinally extending fingers, said fingers having generally arced outer surfaces which together constitute a cylindrical outer surface of the mandrel, each of said fingers having a central longitudinal groove therein an inwardly tapered edges.

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  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Unwinding Of Filamentary Materials (AREA)
US711776A 1968-03-08 1968-03-08 Winding mandrel for packaging glass strands Expired - Lifetime US3544016A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71177668A 1968-03-08 1968-03-08

Publications (1)

Publication Number Publication Date
US3544016A true US3544016A (en) 1970-12-01

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ID=24859482

Family Applications (1)

Application Number Title Priority Date Filing Date
US711776A Expired - Lifetime US3544016A (en) 1968-03-08 1968-03-08 Winding mandrel for packaging glass strands

Country Status (7)

Country Link
US (1) US3544016A (enrdf_load_stackoverflow)
BE (1) BE729545A (enrdf_load_stackoverflow)
FR (1) FR2003517A1 (enrdf_load_stackoverflow)
GB (1) GB1229709A (enrdf_load_stackoverflow)
LU (1) LU58167A1 (enrdf_load_stackoverflow)
NL (1) NL136084C (enrdf_load_stackoverflow)
SE (1) SE345121B (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871592A (en) * 1973-08-03 1975-03-18 Ppg Industries Inc Apparatus for winding glass strands
US4093137A (en) * 1977-05-19 1978-06-06 Ppg Industries, Inc. Expandable collet
DE3514401A1 (de) * 1985-04-20 1986-10-30 Agfa-Gevaert Ag, 5090 Leverkusen Spannzange zum aufnehmen von huelsen
US5279470A (en) * 1991-06-27 1994-01-18 Basf Magnetics Gmbh Winding mandrel tensioning means
US5375791A (en) * 1993-02-11 1994-12-27 Minnesota Mining And Manufacturing Company Hub aligning rotary chuck
US5769342A (en) * 1996-12-13 1998-06-23 Ppg Industries, Inc. Ergonomic endcap, collets, winders, systems and methods of winding forming packages using the same
US20030160833A1 (en) * 2002-02-22 2003-08-28 Fuji Photo Film Co., Ltd. Holder device of recording paper roll
US6669129B1 (en) * 2001-08-31 2003-12-30 Stocker Yale, Inc. Fiber optic cable winding tool
US20070034727A1 (en) * 2005-07-27 2007-02-15 Fuji Photo Film Co., Ltd. Roll holder device
US20080179001A1 (en) * 2007-01-25 2008-07-31 United Solar Ovonic Llc Lamination process and roller for use therein

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102372196B (zh) * 2010-08-17 2015-09-09 乐金电子(天津)电器有限公司 吸尘器的匀速回线卷线器

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871592A (en) * 1973-08-03 1975-03-18 Ppg Industries Inc Apparatus for winding glass strands
US4093137A (en) * 1977-05-19 1978-06-06 Ppg Industries, Inc. Expandable collet
DE3514401A1 (de) * 1985-04-20 1986-10-30 Agfa-Gevaert Ag, 5090 Leverkusen Spannzange zum aufnehmen von huelsen
US5279470A (en) * 1991-06-27 1994-01-18 Basf Magnetics Gmbh Winding mandrel tensioning means
US5375791A (en) * 1993-02-11 1994-12-27 Minnesota Mining And Manufacturing Company Hub aligning rotary chuck
US6012672A (en) * 1996-12-13 2000-01-11 Ppg Industries Ohio, Inc. Ergonomic endcap, collets, winders, systems and methods of winding forming packages using the same
US5769342A (en) * 1996-12-13 1998-06-23 Ppg Industries, Inc. Ergonomic endcap, collets, winders, systems and methods of winding forming packages using the same
US6669129B1 (en) * 2001-08-31 2003-12-30 Stocker Yale, Inc. Fiber optic cable winding tool
US20030160833A1 (en) * 2002-02-22 2003-08-28 Fuji Photo Film Co., Ltd. Holder device of recording paper roll
US7100859B2 (en) * 2002-02-22 2006-09-05 Fuji Photo Film Co., Ltd. Holder device of recording paper roll
US20070034727A1 (en) * 2005-07-27 2007-02-15 Fuji Photo Film Co., Ltd. Roll holder device
US20080179001A1 (en) * 2007-01-25 2008-07-31 United Solar Ovonic Llc Lamination process and roller for use therein
US7947149B2 (en) * 2007-01-25 2011-05-24 United Solar Ovonic Llc Lamination process and roller for use therein

Also Published As

Publication number Publication date
BE729545A (enrdf_load_stackoverflow) 1969-09-08
LU58167A1 (enrdf_load_stackoverflow) 1969-10-21
FR2003517A1 (enrdf_load_stackoverflow) 1969-11-07
SE345121B (enrdf_load_stackoverflow) 1972-05-15
NL136084C (nl) 1973-01-15
GB1229709A (enrdf_load_stackoverflow) 1971-04-28
DE1911022A1 (de) 1969-10-02
DE1911022B2 (de) 1972-07-06
NL6903240A (enrdf_load_stackoverflow) 1969-09-10

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Legal Events

Date Code Title Description
AS Assignment

Owner name: WADE, WILLIAM, J., DELAWARE

Free format text: SECURITY INTEREST;ASSIGNOR:OWENS-CORNING FIBERGLAS CORPORATION;REEL/FRAME:004652/0351

Effective date: 19861103

Owner name: WILMINGTON TRUST COMPANY, DELAWARE

Free format text: SECURITY INTEREST;ASSIGNOR:OWENS-CORNING FIBERGLAS CORPORATION;REEL/FRAME:004652/0351

Effective date: 19861103

Owner name: WADE, WILLIAM, J., ONE RODNEY SQUARE NORTH, WILMIN

Free format text: SECURITY INTEREST;ASSIGNOR:OWENS-CORNING FIBERGLAS CORPORATION;REEL/FRAME:004652/0351

Effective date: 19861103

Owner name: WILMINGTON TRUST COMPANY, ONE RODNEY SQUARE NORTH,

Free format text: SECURITY INTEREST;ASSIGNOR:OWENS-CORNING FIBERGLAS CORPORATION;REEL/FRAME:004652/0351

Effective date: 19861103

AS Assignment

Owner name: OWENS-CORNING FIBERGLAS CORPORATION, A CORP. OF DE

Free format text: TERMINATION OF SECURITY AGREEMENT RECORDED NOV. 13, 1986. REEL 4652 FRAMES 351-420;ASSIGNORS:WILMINGTON TRUST COMPANY, A DE. BANKING CORPORATION;WADE, WILLIAM J. (TRUSTEES);REEL/FRAME:004903/0501

Effective date: 19870730

Owner name: OWENS-CORNING FIBERGLAS CORPORATION, FIBERGLAS TOW

Free format text: TERMINATION OF SECURITY AGREEMENT RECORDED NOV. 13, 1986. REEL 4652 FRAMES 351-420;ASSIGNORS:WILMINGTON TRUST COMPANY, A DE. BANKING CORPORATION;WADE, WILLIAM J. (TRUSTEES);REEL/FRAME:004903/0501

Effective date: 19870730