US3882664A - Yarn deflecting means for automatic yarn piecing apparatus - Google Patents

Yarn deflecting means for automatic yarn piecing apparatus Download PDF

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Publication number
US3882664A
US3882664A US407126A US40712673A US3882664A US 3882664 A US3882664 A US 3882664A US 407126 A US407126 A US 407126A US 40712673 A US40712673 A US 40712673A US 3882664 A US3882664 A US 3882664A
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United States
Prior art keywords
yarn
traveler
flange
ring
package
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Expired - Lifetime
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US407126A
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English (en)
Inventor
Luther A Cleland
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SACO LOWELL CORP
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SACO LOWELL CORP
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Publication date
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Priority to US407126A priority Critical patent/US3882664A/en
Priority to ES425823A priority patent/ES425823A1/es
Priority to CA199,221A priority patent/CA999194A/en
Priority to DE2443616A priority patent/DE2443616C3/de
Priority to JP49107591A priority patent/JPS5065622A/ja
Priority to GB41340/74A priority patent/GB1480413A/en
Priority to CH1350674A priority patent/CH584299A5/xx
Application granted granted Critical
Publication of US3882664A publication Critical patent/US3882664A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/013—Carriages travelling along the machines

Definitions

  • ABSTRACT Pneumatic traveler threading of a length of yarn extended between a bobbin-yarn package and the traveler flange of a spinning ring encircling such package is facilitated when required by a hook-like member which engagingly deflects such yarn at a location intermediate its length and inwardly of the spinning ring.
  • such deflection causes that section of the yarn adjacent the traveler flange to extend at a relatively small angle to the horizontal, and preferably also causes such yarn section to extend laterally toward a point upon the traveler flange that is circumferentially spaced, in the direction of movement of the traveler during the traveler threading operation, from the point at which the yarn overlies the flange.
  • This invention relates to automatic yarn piecing apparatuses adapted to eliminate broken yarn or enddown" conditions at deliveries of textile spinning machines. It more particularly relates to piecing apparatuses of the type which, while performing a piecing operation at a spinning machine delivery requiring enddown servicing, establishes a length of yarn extended between the yarn collection package and the traveler flange of the spinning ring encircling the package at such delivery, and which then performs the traveler threading step of the piecing operation by moving the traveler about the ring flange, usually by pneumatic means, onto the yarn extended across and engaging such flange.
  • Illustrative piecing apparatuses of the foregoing general type are disclosed in US. Pat. Nos. 3,540,200, 3,628,320 and 3,728,852.
  • a length of yarn connected to and extending generally outwardly from the bobbin-yarn package at such delivery is engaged exteriorally of the spinning ring encircling such package by a member which secures the yarn in snubbed overlying engagement with at least the outer edge of the traveler flange of the spinning ring.
  • the traveler mounted upon the ring flange is then propelled thereabout, which may advantageously be done by directing a blast against the interior surface of the spinning ring, so as to mount the yarn and establish a threaded relationship therewith.
  • Patent 3,628,320 recognizes the foregoing problem, and proposes a solution which entails allowing, before attempted performance of the traveler threading step, a certain amount of winding rotation of the bobbinyarn package to which the yarn is connected.
  • Such solution requires the performance of an additional step in each piecing operation conducted by the piecing apparatus, even though the yarns angularity will not be such as to present a problem in an appreciable number of the total piecing operations conducted by the apparatus.
  • the performance of such additional step during each piecing operation, and whether needed or not, requires the provision of additional control and/or other components upon the piecing apparatus and also requires that the yarn be needlessly subjected to some additional stress during many piecing operations.
  • the primary object of the present invention is the provision of improved means, in an automatic yarn piecing apparatus which performs the traveler threading step of each piecing operation by propelling a traveler about a spinning ring onto a length of yarn extended between the traveler flange of such ring and a yarn collection package encircled thereby, for at desired times deflecting that section of the yarn adjacent to and extending inwardly from the traveler flange into a position favorable to mounting of the yarn by the traveler when the latter is propelled about the flange.
  • a related and more specific object is the provision of improved means which eliminates the problem of excessive vertical angulation of the yarn, when such problem exists during a particular piecing operation, with the imposition of only minimal stress upon the yarn, and which imposes no additional stress upon the yarn during those piecing operations when the yarnangulation problem is not present.
  • An additional related and more specific object is the provision of improved means of the described type which requires no additional control components in, or the performance of any separate operational steps by, the piecing apparatus, and which may comprise only one inexpensive component added to and operable in unison with an existing component of the apparatus.
  • the present invention provides improved means, in association with an automatic yarn piecing apparatus which performs the traveler-threading step of each piecing operation by propelling a traveler about a spinning ring onto a length of yarn extending between the traveler flange of such ring and a yarn collection package encircled thereby, for at desired times engaging such yarn intermediate its length and thereby deflecting that section thereof adjacent to and inwardly of the spinning ring into a position favorable to mounting of the yarn by the traveler when the latter is propelled about the ring flange.
  • the yarn is deflected both downwardly toward the elevation of the ring flange, and laterally toward a point upon such flange spaced from the point where the yarn overlies the flange.
  • the yarn deflecting means of the present invention may be and preferably is carried by the support arm of such depressor member in such a manner as to be automatically operable in unison therewith if, but only if, required during a particular piecing operation.
  • FIG. 1 is a fragmentary and somewhat schematic side elevational view, partially in vertical section, of a conventional yarn collection package, ring rail, spinning ring and traveler at a delivery of a textile spinning machine, and of a servicing assembly of an automatic yarn piecing apparatus which includes, in addition to conventional suction head, yarn depressor and traveler threading memebers, yarn deflecting means in accordance with the invention;
  • FIG. 2 is an enlarged fragmentary plan view of the components of FIG. 1 during a later time in a piecing operation when the yarn depressor member has pivoted downwardly and is being advanced, with the servicing assembly, along the ring holder and toward the spinning ring of the spinning machine;
  • FIG. 3 is a fragmentary front elevational view of the yarn depressor member and the yarn deflecting means of the servicing assembly;
  • FIG. 4 is a side elevational view of the yarn deflecting means, and of adjacent portions of the yarn depressor member;
  • FIG. 5 is a fragmentary plan view similar to FIG. 2, but showing the servicing assembly in its fully advanced position occupied during performance of the traveler threading step of a piecing operation;
  • FIG. 6 is a fragmentary side perspective view, partially in vertical section and withthe yarn collection package shown in phantom lines, taken substantially along the line 6-6 of FIG. 5.
  • Spinning machine 10 may be of a conventional and well-known type including, on each side thereof, a stationary spindle rail (not shown) and a vertically movable ring rail 14 which spinning ring 18 carried by a ring holder 19 of ring rail 14, and thence to a yarn collection package 20 encircled by ring 18 and mounted upon the spinning machines spindle rail (not shown) for rotation about a substantially vertical axis.
  • package 20 is rotated about its axis (in a clockwise direction when Z-twist yarn is being produced) so as to cause the yarn to be wound thereon, while ring rail 14 is moved vertically through reciprocatory strokes or traverses so as to cause the package to possess the desired structure ,or build.
  • ring rail 14 may reciprocate througha constant traverse of, say, approximately two inches as it is moved slowly from a lowermost and to an uppermost position relative to the bobbin component of package 20.
  • Spinning ring 18 and traveler 16 of course move vertically in unison with ring rail 14 at all times, both during normal operation of machine 10 and when an end-down condition exists at the machine delivery including such components.
  • Assembly 12 includesyarn retrieving means, illustratively in the form of a suction head 22.
  • Assemblyl2 also includes a yarn depressor member 26 pivotally connected adjacent its,
  • yarn depressor member26 piv.- ots downwardly from its elevated inoperative position, i in the process of which an arcuate position '32thereofi engages and depresses the yarn extending between'li package 20 and suctionhead 22, and assembly 12is again pivoted forwardly toward spinning machinerltlr During this forward movement of assembly 12, .engage ment between an arcuate portion 32 of yarn depressor member 26 and the complimentally curved outer sur-- face of spinning ring 18 assists in guiding asse-mbly26 from its intermediate position shown in FIG. 2 to its final position, shown in FIGS. 5 and 6 and wherein sub- I stantially the full length of depressor portion 32 engages ring 18.
  • a length of the yarn previously retrieved by suc- 7 tion head. 22 extends from package 20 to and over traveler flange 18 of ring 18, being secured in overlying engagement with at least the outer edge" of flange 18' by arcuate portion 32 of yarn depressor 26, A blast of i air then emitted from nozzle 24 into and against the inner circumference ofring 18 creates a clockwise, air
  • this procedure need not be followed, since yarn deflecting means are provided to so position the yarn, when required during the traveler threading step of each piecing operation performed by the piecing apparatus, in a manner favorable to its mounting by the traveler.
  • the yarn deflecting means of the present invention comprises a hook-like member 34 having a base section 36 fixedly secured in any suitable manner uponn the forward and upper end portion of the elongate support arm 26' of yarn depressor member 26.
  • a main body section 38 of member 34 first projects forwardly from base section 36 and arm 26', and then extends laterally therefrom in a generally rearward direction.
  • Formed integrally with the free end of main body section 38 is a depending section 40 having a rounded lower end.
  • the length of depending section 40 of member 34 is such that its lower end is at an elevation only slightly above that of flange 18' of spinning ring 18 when depressor 26 is in a lowered position of engagement with ring holder 19.
  • FIG. 2 shows assembly 12 approaching spinning ring 18 preparatory to performance of the traveler threading step of a piecing operation.
  • the length of yarn Y extending between package and flange 18 of ring 18 lies to the left of depending section 40 of member 26 as section 40 passes, during advancement of assembly 12, closely adjacent to and across the top of ring flange 18' and into the interior of ring 18 (i.e., into the cylindrical space enclosed by a vertical projection of the ring).
  • the aforesaid length of yarn Y will, if extending at an excessively large angle relative to the horizontal, be engaged intermediate its length and deflected from a linear condition by sections 38 and 40 of member 34.
  • engagement between yarn Y and the lower and generally horizontally extending edge of section 38 of member 34 deflects the yarn downwardly, such that the section Y thereof adjacent to and inwardly of ring flange 18' is positioned at a relatively small angle in relation to the horizontal.
  • Such angle is of course less than defined with the horizontal by the remaining yarn section Y" adjacent package 20, and preferably is not'in excess of approximately 20.
  • member 34 While the benefits realized from member 34 are due primarily to the downward deflection of yarn Y, when required, by the lower edge of its section 38, they are also attributable in part to the yarns lateral deflection by section 40 of member 34. Additionally, such lateral deflection of the yarn tends to minimize the small additional stress imposed upon the yarn by member 34.
  • the length of yarn Y established between package 20 and ring flang l8'likely will not extend at an excessively large angle (e.g., more than approximately 20") relative to the horizontal.
  • the yarn may not be engaged by either section 38 or section 40 of member 34, in which event even the aforesaid small amount of additional stress will not be imposed upon the yarn.
  • the vertical angularity of the yarn may not be so excessive as to require or undergo correction by section 38 of member 34, lateral deflection of the yarn by section 40 of member 34 will still occur. This is not undesirable since, as noted previously, the yarns lateral deflection does facilitate successful performance of the traveler threading step to some extent.
  • an automatic yarn piecing apparatus servicing a textile spinning machine including a spinning ring having a traveler flange encircling a yarn collection package, said apparatus including yarn positioning means for establishing a length of yarn extending from said package to and across said flange of said spinning ring, and traveler threading means for moving a traveler about said ring flange and onto said yarn extending across said flange, the improvement comprising:
  • yarn deflecting means for engaging said length of yarn at a location thereon intermediate said package and said ring flange and at desired times during operation of sid traveler threading means, and for deflecting a section of said yarn adjacent to and inwardly of said spinning ring flange into a position favorable to the mounting of said yarn by said traveler upon movement thereof about said ring flange by said traveler threading means.
  • said deflecting means is means for deflecting said yarn section downwardly to define an angle with the horizontal fleeting means is means for deflecting said yarn section generally laterally toward a point onsaid ring flange circumferentially spaced from the point at which said yarn crosses said flange, so as to cause said yarn section to define an angle with said ring flange smaller than the angle defined by the remaining section of said yarn adjacent said package.
  • said traveler threading means includes nozzle means for, at said desired times, creating a circular movement of air about the inner surface of said ring for moving said traveler about said ring flange, and wherein said yarn deflecting means is spaced from said ring to permit said movement of said air and said traveler about said ring in an unobstructed manner.
  • said yarn deflecting means comprises a generally hook-like member having a generally horizontally extending section for said downward deflecting such that said yarn section defines said smaller angle, and further having a downwardly depending section for deflecting said yarn section laterally toward a point on said ring flange cir cumferentially spaced from the point where said yarn crosses said flange.
  • said yarn positioning means includes a yarn depressor member engageable during operation of said traveler threading means with said spinning ring exteriorly thereof for se curing said yarn in position'across said flange, and wherein said yarn deflecting means is carried by said yarn depressor member andprojects therefrom into said spinning ring during said operation.
  • said yarn positioning means further includes yarn retrieving means for retrieving yarn from said package and ex-.
  • said traveler threading means includes nozzle means for, at said desired. times, creating a circular movement. of air about the inner surface of said ring for moving said traveler about said ring flange, and wherein. said yarn retrieving means includes a suction head adapted to apply yarn retrieving suction forces to said package,
  • said yarn deflecting means is spaced from said ring to permit said movement of said air and said traveler about said ring and application.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US407126A 1973-10-17 1973-10-17 Yarn deflecting means for automatic yarn piecing apparatus Expired - Lifetime US3882664A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US407126A US3882664A (en) 1973-10-17 1973-10-17 Yarn deflecting means for automatic yarn piecing apparatus
ES425823A ES425823A1 (es) 1973-10-17 1974-04-30 Perfeccionamientos en los aparatos automaticos de anudado de hilos para maquinas de hilatura textil.
CA199,221A CA999194A (en) 1973-10-17 1974-05-08 Yarn deflecting means for automatic yarn piecing apparatus
DE2443616A DE2443616C3 (de) 1973-10-17 1974-09-12 Automatische an Ringspinnmaschinen verfahrbare Einfädelvorrichtung
JP49107591A JPS5065622A (de) 1973-10-17 1974-09-18
GB41340/74A GB1480413A (en) 1973-10-17 1974-09-23 Automatic yarn piecing apparatus having yarn deflecting means
CH1350674A CH584299A5 (de) 1973-10-17 1974-10-08

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US407126A US3882664A (en) 1973-10-17 1973-10-17 Yarn deflecting means for automatic yarn piecing apparatus

Publications (1)

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US3882664A true US3882664A (en) 1975-05-13

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US407126A Expired - Lifetime US3882664A (en) 1973-10-17 1973-10-17 Yarn deflecting means for automatic yarn piecing apparatus

Country Status (7)

Country Link
US (1) US3882664A (de)
JP (1) JPS5065622A (de)
CA (1) CA999194A (de)
CH (1) CH584299A5 (de)
DE (1) DE2443616C3 (de)
ES (1) ES425823A1 (de)
GB (1) GB1480413A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155215A (en) * 1977-03-28 1979-05-22 Zinser Textilmaschinen Gmbh Automatic threading device for filament winding machines
CN110067054A (zh) * 2018-01-24 2019-07-30 里特机械公司 将纱线端部穿纱到钢领钢丝圈内的方法和装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3824952A1 (de) * 1988-07-22 1990-01-25 Reiners & Fuerst Ringspinn- oder ringzwirnmaschine
CN113174669B (zh) * 2021-04-14 2022-03-04 东华大学 一种用于环锭纺细纱自动接头的机器人末端执行机构
CN113279093B (zh) * 2021-06-10 2022-08-09 日照品特裕华纺织科技有限公司 一种环锭纺细纱机钢丝圈自动穿线方法及其穿线装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374616A (en) * 1965-09-30 1968-03-26 Celanese Corp Doffing machine
US3486319A (en) * 1968-06-24 1969-12-30 Parks Cramer Co Apparatus and method for detecting,piecing-up and reporting ends down on spinning machines
US3628320A (en) * 1969-08-01 1971-12-21 Maremont Corp Method and apparatus for traveler threading
US3728852A (en) * 1971-06-03 1973-04-24 Maremont Corp Servicing assembly for automatic yarn piecing apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374616A (en) * 1965-09-30 1968-03-26 Celanese Corp Doffing machine
US3486319A (en) * 1968-06-24 1969-12-30 Parks Cramer Co Apparatus and method for detecting,piecing-up and reporting ends down on spinning machines
US3628320A (en) * 1969-08-01 1971-12-21 Maremont Corp Method and apparatus for traveler threading
US3728852A (en) * 1971-06-03 1973-04-24 Maremont Corp Servicing assembly for automatic yarn piecing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4155215A (en) * 1977-03-28 1979-05-22 Zinser Textilmaschinen Gmbh Automatic threading device for filament winding machines
CN110067054A (zh) * 2018-01-24 2019-07-30 里特机械公司 将纱线端部穿纱到钢领钢丝圈内的方法和装置
EP3521487A1 (de) * 2018-01-24 2019-08-07 Maschinenfabrik Rieter AG Verfahren und vorrichtung zum einfädeln eines fadenendes in einen ringläufer
CN110067054B (zh) * 2018-01-24 2023-04-28 里特机械公司 将纱线端部穿纱到钢领钢丝圈内的方法和装置

Also Published As

Publication number Publication date
DE2443616A1 (de) 1975-04-30
DE2443616B2 (de) 1976-11-11
JPS5065622A (de) 1975-06-03
DE2443616C3 (de) 1980-01-24
CH584299A5 (de) 1977-01-31
GB1480413A (en) 1977-07-20
ES425823A1 (es) 1976-09-01
CA999194A (en) 1976-11-02

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