US3451640A - Yarn guide assembly - Google Patents

Yarn guide assembly Download PDF

Info

Publication number
US3451640A
US3451640A US671312A US3451640DA US3451640A US 3451640 A US3451640 A US 3451640A US 671312 A US671312 A US 671312A US 3451640D A US3451640D A US 3451640DA US 3451640 A US3451640 A US 3451640A
Authority
US
United States
Prior art keywords
cam
slide
follower
yarn guide
groove
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
US671312A
Other languages
English (en)
Inventor
John P Kieronski
Harry B Miller
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.)
Whitin Machine Works Inc
Original Assignee
Whitin Machine Works Inc
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 Whitin Machine Works Inc filed Critical Whitin Machine Works Inc
Application granted granted Critical
Publication of US3451640A publication Critical patent/US3451640A/en
Assigned to CONGRESS FINANCIAL CORPORATION reassignment CONGRESS FINANCIAL CORPORATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). AGAINST PATENTS & TRADEMARKS Assignors: LESCATH CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2806—Traversing devices driven by cam
    • B65H54/2809—Traversing devices driven by cam rotating grooved cam
    • B65H54/2812—Traversing devices driven by cam rotating grooved cam with a traversing guide running in the groove
    • 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

  • a yarn guide assembly for use in the traverse mechanism of a winding machine comprising a pair of spacedapart, elongated slide bars having grooves facing each other and constituting parallel slide tracks and a slide element having flange portions received in the tracks on the slide bars for sliding movement.
  • a yarn guide projects from one side of the slide element in a direction generally perpendicular to the plane defined by the axes of the slide bar grooves, and a cam follower projects from the slide element in the other direction.
  • This invention relates to a yarn guide of the type used in the traverse mechanism of a winding machine.
  • traverse mechanism In winding yarn (or other thread-like elements) into a roll or so-called package, the yarn is moved back and forth across the length of a rotating take-up roll by a traverse mechanism to produce a cylindrical, conical or other desired shape of package.
  • a traverse mechanism is composed of a drum cam having an endless cam groove of appropriate shape to build the desired roll and a yarn guide assembly constituted by a fixed rod parallel to the roll, a tubular guide piece carried by the rod and provided with a yarn guide element, and a cam follower suitably connected to the guide piece.
  • the force acting on the cam and reacting against the cam follower at any given point is a function of the mass of the moving parts of the mechanism and the acceleration of those parts relative to the cam surface.
  • the acceleration is a function of the operating speed and the shape of the cam groove.
  • the yarn guide assembly of the invention is employed with a rotating drum scroll cam of the type conventionally used in a traverse mechanism and comprises a pair of spaced-apart, elongated slide bars having parallel track formations, such as, for example, grooves facing each other.
  • a slide element having slide-following portions received for sliding movement on the track formations of the slide bars carries a yarn guide element on one side and a cam follower on the other side of the path of movement.
  • the slide bars can be spaced relatively closeto each other, and thus the slide element can have a size and weight considerably less than the size and weight of the tubular guide used in a rod-type of guide assembly without any reduction in strength.
  • a further advantage of the closely spaced slide bars and the slide element is that the dimension in a direction generally radially of the drum cam can be minimized, thus making it possible to minimize the size and length of the cam follower shaft with a consequent further reduction in weight.
  • the cam can be located closer to the yarn guide point, and the sizes of all of the moving parts can be reduced accordingly.
  • the slide element is composed of (l) a body in the general form of a flat plate, each of two opposite edges of which are formed to match the slide formations of the slide bars and are received for sliding movement along the slide bar, (2) a flange projecting from one face of the body and carrying the yarn guide element, and (3) a cylindrical shaft extending from the other side of the body.
  • the cam follower has a cylindrical hole and is mounted for pivotal movement on the shaft, the follower preferably being of a type that is slidable along the groove.
  • a preferred form of cam follower is that described and shown in copending application Ser. No. 647,023 for Cam Mechanism, filed June 19, 1967, which is assigned to the assignee of this application.
  • the slide element may be formed in one piece, prefercut-outs further reduce the weight of the slide element while providing flanges of an appropriate length for the guiding surfaces to provide stability.
  • FIG. 1 is a view in end cross-section of a portion of a traverse mechanism embodying the yarn guide assembly, the moving parts of the guide assembly, however, being shown in elevation for greater clarity;
  • FIG. 2 is a top view in cross-section through a portion of the traverse mechanism of FIG. 1, the moving parts again being shown in elevation and the view being taken generally along the lines 22 of FIG. 1 and looking in the direction of the arrows; and
  • FIG. 3 is a front elevational view of the mechanism of FIGS. 1 and 2, the guide bars, however, being shown in phantom to enable a clearer illustration of the slide and cam follower elements.
  • the traverse mechanism includes a rotating drum scroll cam 10 having an endless cam groove 12 extending helically around the drum between reversal points 12a .(only one of which is shown, see FIG. 3).
  • a keel groove 14 which, as is described in greater detail below, is traversed by a keel on the cam follower element which guides the cam follower across a crossover (not shown) in the groove 12.
  • the keel groove 14 is not needed.
  • the drawings illustrate only the segment of the cam and its cam groove 12 and keel groove 14 in the region of the cam groove reversal 12a.
  • the keel groove 14 is somewhat wider than it is in the helical parts of the cam groove 12 so as to allow for the curvature and a slight amount of cocking of the cam follower with respect to the instantaneous axes of the grooves 12 and 14.
  • the drum cam 10 drives a yarn guide assembly 16 which is composed of a pair of spaced-apart, elongated slide bars 18 and 20, only portions of which are shown in the drawings.
  • the slide bars are suitably fastened to fixed parts of the machine, and each is provided with a track formation in the form of a groove 18a and 20a, respectively.
  • the bars 18 and 20 are spaced relatively close to each other equidistant from a radial axial plane of the cam 10 and are, of course, mounted so that the axes of the grooves 18a and 20a are parallel to each other and parallel to the axis of the cam 10.
  • the guide element 22 includes a body 220 generally in the form of a rectangular plate.
  • the longer edges 22b and 220 of the plate are formed, in cross-section (FIG. 1), to match the shapes of the slide bar groves 18a and 20a (see FIG. 1), and each includes a cut-out 22b or 22c subdividing the edges 22b and 220 into spaced-apart segments, the segments constituting the track-follower portions of the slide element 22 and being slidably received in the slide bar grooves.
  • the follower 26 Projecting rearwardly toward the axis of the cam 10 is a cylindrical shaft 24 which receives a cam follower element 26, the cam follower 26 having a hole 28 of a size affording pivotal movement of the follower 26 on the shaft 24.
  • the follower 26 includes a main cam-folfollowing portion 26a of a width substantially equal to the width of the cam groove 12 and somewhat elongated in the direction of the axis of the cam groove 12 and a keel portion 26b extending down from the base of the main follower portion 26a.
  • the keel portion 26b is substantially narrower and longer than the main camfollowing portion 26a and projects into the keel groove 14 of the cam.
  • the follower 26 is guided along the slot by engagement of one or the other of the side faces 26c or 26d of the portion 26a with the co-engaging wall of the cam groove 12.
  • the cam follower As the cam rotates and with the follower 26 in a position where it moves from right to left, with respect to FIG. 3, the right face 26d of the follower engages the right wall of the cam groove 12 until the point where the reversal portion 12a of the groove begins and the follower is decelerated in the leftward direction.
  • the cam follower In the position illustrated in FIG. 3, the cam follower is approximately at the center of the reversal portion 12a at the left end of the cam 10, and in this position and in the following approximately 180 of rotation of the cam 10, the left face 220 of the follower engages the left wall of the groove 12.
  • the cam groove 12 will have a cross-over (not shown) and thus the keel groove 14 is provided to guide the follower through the cross-over where, as is well understood by those skilled in the art, the cam groove 12 is interrupted and there is no cam surface for the main follower portion 26a to engage.
  • the embodiment of the follower illustrated in the drawings conforms to the principles of the cam follower described in the copending application of John P. Kieronski entitled, Cam Mechanism, filed June 19, 1967, as mentioned above.
  • the cam-following faces 26c and 26d of the cam follower are curved, and the minimum curvature of the faces is greater than the maximum curvature of any point along the cam groove 12.
  • This construction provides a significant reduction in compressive or contact stresses at the line of contact between the follower and the cam groove 12. Accordingly, the follower is capable of enduring higher loads and therefore higher operating speeds.
  • a flange 22 Extending from the front face of the guide element 22 is a flange 22 which is disposed generally in a radialaxial plane of the cam 10.
  • the flange 22 supports a yarn guide element 30, which is made of, for example, a ceramic material and is in the form of a fiat plate having tapered edges converging toward a tip 30a formed with a slot 30b.
  • the slide element 22 should be made of a low-friction material, such as nylon, and where the material can be molded or cast, the yarn guide element 30 can be molded or cast in place.
  • the main body portion 22a, the shaft 24 and the flange 22 can readily be formed integrally regardless of whether the slide element is cast and then machined or ground or is machined from a block of material.
  • the yarn guide element 30 When the yarn guide element 30 is cast in place, it includes an elongated hole 300 which becomes filled with the material and is thereby firmly secured in place on the slide member 22.
  • the cam drum 10 In operation, the cam drum 10 is rotated and drives the cam 26, slide element 22 and yarn guide 30 longitudinally back and forth.
  • the mov ing parts of the guide assembly that is, the yarn guide element 30, the slide element 22 and the cam follower 26, are subjected to high acceleration relative to the groove 12, thus creating forces of relatively high magnitude.
  • the moving parts of the mechanism are of minimum size and weight, owing to the novel and improved structural features of the assembly, the forces are nonetheless minimized for a given acceleration. As a result, the speed of operation of the mechanism can be quite high Without exceeding the strengths of the elements.
  • the guide mechanism operates with good stability of the guide element 22, which is enhanced by the relatively large span between the segmented guide flanges constituted by the edges 22! and 220 of the slide element body 22b.
  • the forming of the slide element 22 as an integral member composed of the shaft 24 carrying the cam follower and the flange 22f carrying the yarn guide element 30 eliminates the need for the connections that would be required if the parts of the guide were separate.
  • the construction of the mechanism particularly insofar as it embodies slide bars guiding the slide element along a guide space between them, enables the location of the slide element 22 and the yarn guide element 30 very close to the drum 10, thereby minimizing the sizes and thus the weights of these parts.
  • a yarn guide assembly for use with a rotating drum scroll cam in a traverse mechanism and having a low weight and size and being thus adapted for high speed operation without creating correspondingly high forces upon acceleration comprising a pair of closely spacedapart elongated slide bars having parallel slide grooves facing each other; a one-piece molded or cast slide element having (1) a body in the general form of a fiat plate straddling the space between the slide bars, the body being elongated in a direction longitudinally of the slide bars and the longer edges being received in the slide grooves for sliding movement therealong, and the body having notches formed in the said longer edges to define longitudinally spaced slide segments, (2) a narrow elongated flange projecting from one face of the body and disposed with its longer dimension aligned with the longer axis of the body, and (3) a cylindrical shaft projecting from the other face of the body in a direction opposed to the flange; a yarn guide carried by the slide element, the yarn guide being a platelike element disposed with its major plane substantially

Landscapes

  • Winding Filamentary Materials (AREA)
US671312A 1967-09-28 1967-09-28 Yarn guide assembly Expired - Lifetime US3451640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67131267A 1967-09-28 1967-09-28

Publications (1)

Publication Number Publication Date
US3451640A true US3451640A (en) 1969-06-24

Family

ID=24693973

Family Applications (1)

Application Number Title Priority Date Filing Date
US671312A Expired - Lifetime US3451640A (en) 1967-09-28 1967-09-28 Yarn guide assembly

Country Status (4)

Country Link
US (1) US3451640A (enrdf_load_stackoverflow)
CH (1) CH515173A (enrdf_load_stackoverflow)
GB (1) GB1228209A (enrdf_load_stackoverflow)
NL (1) NL6813797A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3690579A (en) * 1971-11-15 1972-09-12 Northrop Carolina Inc Textile thread winder with improved thread traversing mechanism
US3706420A (en) * 1970-11-23 1972-12-19 Manuel Lapidas Yarn winding mechanism
US5850983A (en) * 1996-10-15 1998-12-22 Georg Sahm Gmbh & Co. Kg Traversing yarn guide for winding machines with reversing screwthread shaft having an endless screwthread groove
US10349767B2 (en) 2016-08-16 2019-07-16 Napkin Knots, LLC Cutlery bundle securing assembly and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475215A (en) * 1936-09-29 1937-11-16 Thomas Holt Ltd Improvements in thread guides for yarn and like winding-machines
GB802430A (en) * 1954-03-20 1958-10-08 Georg Sahm Cross-winding machine
US2934284A (en) * 1956-07-06 1960-04-26 Steeger Wilhelm Thread traverse mechanism for a precision cross winding machine
US3059874A (en) * 1961-03-31 1962-10-23 Du Pont Yarn traversing apparatus
US3086722A (en) * 1962-04-26 1963-04-23 Du Pont Yarn traverse mechanism
US3373949A (en) * 1964-10-21 1968-03-19 British Nylon Spinners Ltd Yarn winding mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475215A (en) * 1936-09-29 1937-11-16 Thomas Holt Ltd Improvements in thread guides for yarn and like winding-machines
GB802430A (en) * 1954-03-20 1958-10-08 Georg Sahm Cross-winding machine
US2934284A (en) * 1956-07-06 1960-04-26 Steeger Wilhelm Thread traverse mechanism for a precision cross winding machine
US3059874A (en) * 1961-03-31 1962-10-23 Du Pont Yarn traversing apparatus
US3086722A (en) * 1962-04-26 1963-04-23 Du Pont Yarn traverse mechanism
US3373949A (en) * 1964-10-21 1968-03-19 British Nylon Spinners Ltd Yarn winding mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3706420A (en) * 1970-11-23 1972-12-19 Manuel Lapidas Yarn winding mechanism
US3690579A (en) * 1971-11-15 1972-09-12 Northrop Carolina Inc Textile thread winder with improved thread traversing mechanism
US5850983A (en) * 1996-10-15 1998-12-22 Georg Sahm Gmbh & Co. Kg Traversing yarn guide for winding machines with reversing screwthread shaft having an endless screwthread groove
US10349767B2 (en) 2016-08-16 2019-07-16 Napkin Knots, LLC Cutlery bundle securing assembly and method
US10463182B2 (en) 2016-08-16 2019-11-05 Napkin Knots, LLC Cutlery bundle securing assembly and method

Also Published As

Publication number Publication date
CH515173A (de) 1971-11-15
GB1228209A (enrdf_load_stackoverflow) 1971-04-15
NL6813797A (enrdf_load_stackoverflow) 1969-04-01

Similar Documents

Publication Publication Date Title
US3011736A (en) Yarn-ballooning control sleeve for winding machines
US3451640A (en) Yarn guide assembly
US3086722A (en) Yarn traverse mechanism
US3664596A (en) Traversing device for winding machines
US3350021A (en) Thread winding machine
US3823886A (en) Apparatus for winding materials, such as threads, yarns or bands into cross-wound bobbins
US2618441A (en) Cone winder tension compensator
US3900166A (en) Apparatus for reciprocating a yarn guide
US3940075A (en) Winding machine
US2965322A (en) Machine for winding filament or yarn packages
US2934284A (en) Thread traverse mechanism for a precision cross winding machine
KR19990067939A (ko) 권취 기계
JPS6118679A (ja) 巻取り機
US3059874A (en) Yarn traversing apparatus
US3799464A (en) Thread or yarn winding control apparatus
US3334829A (en) Traverse device
US5201347A (en) Weft feeder having yarn reserve winding unit with adjustable cross section
US3670978A (en) Compensator device
US3797767A (en) High-speed cross-winding device
US2352781A (en) Traversing apparatus
US3612428A (en) Traverse mechanism useful in textile machines
US3353761A (en) Thread guide arrangement for a winding machine
US2524121A (en) Winder
US2705598A (en) Tube take-up for two-for-one twister
US3858818A (en) Thread windup apparatus and process

Legal Events

Date Code Title Description
AS Assignment

Owner name: CONGRESS FINANCIAL CORPORATION

Free format text: SECURITY INTEREST;ASSIGNOR:LESCATH CORPORATION;REEL/FRAME:004087/0502

Effective date: 19830103