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USH1100H - Yarn bobbin - Google Patents

Yarn bobbin Download PDF

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Publication number
USH1100H
USH1100H US07/729,374 US72937491A USH1100H US H1100 H USH1100 H US H1100H US 72937491 A US72937491 A US 72937491A US H1100 H USH1100 H US H1100H
Authority
US
United States
Prior art keywords
yarn
tube
tapered
support tube
support
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.)
Abandoned
Application number
US07/729,374
Inventor
Mark D. Blue
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.)
EIDP Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US07/729,374 priority Critical patent/USH1100H/en
Assigned to E. I. DU PONT DE NEMOURS AND COMPANY reassignment E. I. DU PONT DE NEMOURS AND COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BLUE, MARK D.
Application granted granted Critical
Publication of USH1100H publication Critical patent/USH1100H/en
Abandoned 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
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/04—Kinds or types
    • B65H75/08—Kinds or types of circular or polygonal cross-section
    • B65H75/10—Kinds or types of circular or polygonal cross-section without flanges, e.g. cop tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/26—Arrangements for preventing slipping of winding
    • 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

  • This invention relates to winding of yarn packages and, more particularly, relates to the supports on which textile yarn packages are wound.
  • a cylindrical yarn support has tapered recesses extending around its circumference located adjacent each of its ends. Each recess is tapered toward the center of the support to provide a tapered surface at the yarn winding reversals. This tapered recess increases the normal component of yarn tension resulting in higher frictional force at the reversals to reduce yarn sloughing or slippage toward the center of the support.
  • FIG. 1 is an elevation view of a yarn support with the initial winding shown on the surface of the support.
  • FIG. 2 is an enlarged view of one end of the support showing a diagram of the relative magnitude of the force components resulting from yarn tension at the reversals during winding.
  • FIG. 3 is an enlarged view of one end of a prior art support showing a diagram of the relative magnitude of force components resulting from yarn tension at the reversals during winding.
  • the preferred yarn support is a hollow cylindrical tube 10 having a pair of tapered recesses 12, 14 formed into its outer surface near and in substantial parallelism with each end of the tube 10. Each recess is tapered toward the center of the tube 10 to provide tapered surfaces 12a and 14a at the locations where the yarn reversals 20 occur during the traverse winding of yarn 22 on rotating support 10.
  • the recesses 12, 14 are typically 0.010 inch deep by 5/8 inch wide, and the yarn tube is formed of paper.
  • Yarn may be wound on support 10 on readily available winding equipment.
  • the yarn 22 is carried by a suitable guide that traverses the rotating support as indicated by the direction arrows.
  • the tapered surfaces 12a and 14a provide a tapered surface or ramp at the location of the winding reversals 20 on the package support.
  • the normal component of the yarn tension (FN) results in high frictional force which overcomes transverse component (FT) of yarn tension to cause the yarn to remain in place.
  • FT' transverse component of yarn tension
  • the transverse component of yarn tension FT' exceeds the normal component of yarn tension FN' causing the yarn to tend to slip or slough to the center of the support 10'.

Landscapes

  • Winding Filamentary Materials (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)

Abstract

A yarn package support tube for traverse wound packages has tapered recesses adjacent each end of the tube extending around the circumference of the tube. The recesses taper toward the center of the tube to provide a tapered surface at the yarn winding reversals.

Description

This invention relates to winding of yarn packages and, more particularly, relates to the supports on which textile yarn packages are wound.
In the process of helically winding yarn (particularly polyester and polyamide yarns) onto cylindrical yarn supports, it has been found that there is a tendency for the initial windings of yarn next to the bobbin, near the yarn reversals, to slough toward the center of the bobbin. This sloughing causes entanglement between adjacent layers of yarn which results in breakage of the yarn at the entanglement when it is unwound from the bobbin for further processing.
SUMMARY OF THE INVENTION
A cylindrical yarn support has tapered recesses extending around its circumference located adjacent each of its ends. Each recess is tapered toward the center of the support to provide a tapered surface at the yarn winding reversals. This tapered recess increases the normal component of yarn tension resulting in higher frictional force at the reversals to reduce yarn sloughing or slippage toward the center of the support.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is an elevation view of a yarn support with the initial winding shown on the surface of the support.
FIG. 2 is an enlarged view of one end of the support showing a diagram of the relative magnitude of the force components resulting from yarn tension at the reversals during winding.
FIG. 3 is an enlarged view of one end of a prior art support showing a diagram of the relative magnitude of force components resulting from yarn tension at the reversals during winding.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIG. 1, the preferred yarn support is a hollow cylindrical tube 10 having a pair of tapered recesses 12, 14 formed into its outer surface near and in substantial parallelism with each end of the tube 10. Each recess is tapered toward the center of the tube 10 to provide tapered surfaces 12a and 14a at the locations where the yarn reversals 20 occur during the traverse winding of yarn 22 on rotating support 10. The recesses 12, 14 are typically 0.010 inch deep by 5/8 inch wide, and the yarn tube is formed of paper.
Yarn may be wound on support 10 on readily available winding equipment. For example, the yarn 22 is carried by a suitable guide that traverses the rotating support as indicated by the direction arrows.
In operation the tapered surfaces 12a and 14a provide a tapered surface or ramp at the location of the winding reversals 20 on the package support. As shown in FIG. 2, when the yarn is laid down in a reversal curve on this ramp, the normal component of the yarn tension (FN) results in high frictional force which overcomes transverse component (FT) of yarn tension to cause the yarn to remain in place. When compared to a similar reversal 20' on a straight cylindrical prior art support 10' (FIG. 3), the transverse component of yarn tension FT' exceeds the normal component of yarn tension FN' causing the yarn to tend to slip or slough to the center of the support 10'.

Claims (3)

What is claimed is:
1. A yarn support tube for traverse wound yarn packages, said tube having tapered recesses extending around its circumference adjacent each of its ends, each recess being tapered toward the center of the support tube to provide a tapered surface at yarn winding reversals on the support tube, whereby as yarn is laid down in a reversal curve on said tapered surface, the normal component of yarn tension is greater than the transverse component of yarn tension causing the yarn to remain in place.
2. The yarn support tube of claim 1 wherein said tube is formed of paper.
3. The yarn support tube of claim 1 or 2 wherein said tapered recess is about 0.010 inch deep and about 5/8 inch wide.
US07/729,374 1991-07-12 1991-07-12 Yarn bobbin Abandoned USH1100H (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07/729,374 USH1100H (en) 1991-07-12 1991-07-12 Yarn bobbin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/729,374 USH1100H (en) 1991-07-12 1991-07-12 Yarn bobbin

Publications (1)

Publication Number Publication Date
USH1100H true USH1100H (en) 1992-09-01

Family

ID=24930753

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/729,374 Abandoned USH1100H (en) 1991-07-12 1991-07-12 Yarn bobbin

Country Status (1)

Country Link
US (1) USH1100H (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834032A (en) 1931-01-29 1931-12-01 Revonah Spinning Mills Bobbin
US2569094A (en) 1945-08-06 1951-09-25 Sonoco Products Co Textile cone
US3138345A (en) 1960-09-27 1964-06-23 Sulzer Ag Bobbin body having rthread end attaching means
US3158335A (en) 1962-07-03 1964-11-24 American Schlafhorst Company I Winding core for textile yarn packages
US4055311A (en) 1974-07-04 1977-10-25 Hoechst Aktiengesellschaft Device for winding up yarns
US4063688A (en) 1974-03-18 1977-12-20 Rhone-Poulenc-Textile Textile yarn carrier
US4742972A (en) 1987-05-13 1988-05-10 Sonoco Products Company Carrier for textile yarn

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1834032A (en) 1931-01-29 1931-12-01 Revonah Spinning Mills Bobbin
US2569094A (en) 1945-08-06 1951-09-25 Sonoco Products Co Textile cone
US3138345A (en) 1960-09-27 1964-06-23 Sulzer Ag Bobbin body having rthread end attaching means
US3158335A (en) 1962-07-03 1964-11-24 American Schlafhorst Company I Winding core for textile yarn packages
US4063688A (en) 1974-03-18 1977-12-20 Rhone-Poulenc-Textile Textile yarn carrier
US4055311A (en) 1974-07-04 1977-10-25 Hoechst Aktiengesellschaft Device for winding up yarns
US4742972A (en) 1987-05-13 1988-05-10 Sonoco Products Company Carrier for textile yarn

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Legal Events

Date Code Title Description
AS Assignment

Owner name: E. I. DU PONT DE NEMOURS AND COMPANY, DELAWARE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BLUE, MARK D.;REEL/FRAME:005841/0592

Effective date: 19910715

STCF Information on status: patent grant

Free format text: PATENTED CASE