US2941263A - Textile drawing mechanism - Google Patents

Textile drawing mechanism Download PDF

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Publication number
US2941263A
US2941263A US720860A US72086058A US2941263A US 2941263 A US2941263 A US 2941263A US 720860 A US720860 A US 720860A US 72086058 A US72086058 A US 72086058A US 2941263 A US2941263 A US 2941263A
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US
United States
Prior art keywords
component
top rolls
rolls
carrier arm
twin
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
US720860A
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English (en)
Inventor
Kubler Friedrich
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.)
SKF GmbH
Original Assignee
SKF Kugellagerfabriken GmbH
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 SKF Kugellagerfabriken GmbH filed Critical SKF Kugellagerfabriken GmbH
Application granted granted Critical
Publication of US2941263A publication Critical patent/US2941263A/en
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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
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/46—Loading arrangements
    • D01H5/50—Loading arrangements using springs
    • D01H5/505—Loading arrangements using springs for top roller arms
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/46—Loading arrangements
    • D01H5/50—Loading arrangements using springs

Definitions

  • This invention relates generally to drawing mechanisms for textile machinery, for example, spinning frames and the like, and, more particularly, is directed toward improvements in drawing mechanisms of the kind wherein twin top rolls, that is, assemblies of two axially aligned top rolls at the opposite ends of a roller shaft, cooperate with lower rolls which are rotatably supported in an underframe of the mechanism, and the twin top rolls are individually suspended from an arm or carrier which is pivoted on a iixed support for movement between operative and inoperative positions, with springs acting be tween the pivoted arm and the top rolls suspended therefrom to urge the latter toward the related lower rolls, while releasable locking means is provided for retaining the pivoted arm in its operative position against the reactions of the forces of the springs weighting the top rolls.
  • the spacing between the nip points formed by the lines of Contact between the individual top rolls and the corresponding bottom rolls should be variable either for the purpose of adapting the drawing mechanism for the processing of dilerent iibrous materials, for example, materials having different staple lengths, or in order rto obtain a general improvement in the drawing conditions.
  • the weighting or pressures acting on the individual top rolls also determine the quality of the yarn to be produced so that it is frequently necessary rto vary such weighting or pressures and also to vary the spacing between the nip points for each drawing mechanism on the complete spinning machine.
  • a breakdown or failure occurring in one of the drawing mechanisms of a spinning or other textile machine renders the entire machine, or at least a major portion thereof, inoperative for a lengthy period in the event that the failure cannot be corrected with the drawing mechanism situ-Y ated on the machine.
  • a textile drawing mechanism comprises a xed support or bracket, a carrier arm including a first component pivotallv mounted on the fixed support and a second component releasably secured to the rst component in longitudinal alignment with the latter to overlie the drawing field when the carrier arm is disposed in its operative position where it can be releasably locked by a conventional locking means, such second component of the carrier arm having a section which is swingable laterally in a plane parallel to the plane of the drawing field and which carries the twin top rolls and the weighting means acting upon the latter.
  • each drawing mechanism can be provided with additional interchangeable removable components of the'carrier arm thereof, so that adjustments of the spacing and weighting of the top rolls can be eifected on one of the additional removable components of a drawing mechanism, and the latter, following such adjustment, can be installed in place of the previously used removable component.
  • a laterally swingable section onthe removable component of the carri-er arm inv a drawingr mechanism embodying this invention has the advantage of ensuring the automatically accurate adjustment of all of the top rolls in relation to the corresponding bottom rollssothat the axesof the top and bottom rolls areV always parallel.
  • lateral swinging of a section of the removable component is made possible by a frictionless joint, for example, in the form of a thin resilient plate, connecting the swingable section to the remainder of the removable component of the carrier arm.
  • the removable component of the carrier arm is longitudinally adjustable relative to the component of thecarrier arm which is permanently pivoted on the xed support or bracket, so that longitudinal adjustment of the removable component makes it possible to vary the positions of all of the top ⁇ rolls relative to thecorresponding bottom rolls without requiring displacement of eitherthe usual supporting bar carryingI the fixed supports or brackets of the drawing mechanisms or of the bottom rolls of the drawing mechanisms.
  • Still another feature of the drawing mechanism embodying the present invention isY the provision of a protective cover extending over both components of the carrier arm to avoid the accumulation of lint about the carrier arm, such protective cover being secured inl position by the same means employed for releasably securing thercmovable component ofthe carrier arm to the component of the latter which -is permanently pivoted onthe fixed' support.
  • the laterallyswingable section of the removable component of the carrier arm is formed with a longitudinal extending slot, and a holder for each set ofV twin top rolls is adjustably and removably received in suchslot to permit adjustment of the spacing between the sets of twin top rollsy as well as to facilitate the replacement of any worn or defective set of twin top rolls, eachsetl of twin top rolls being mounted in a housing which is pivoted on arms depending from the related holder and which carries a stop engageable with the arms when the carrier arm is released for upward movement from its operative position, thereby tolimit the swinging of the housing in the direction moving the related set of twin top rolls away from the carrier arm.
  • the stops associated with the several sets of twin top rolls arer arranged so that the housingv accommodating the set of twin top rollsfurthest from the swinging or pivoting axis of the carrier arm, that is, the foremost set of twin top rolls,- can swing through an angle. greater than the. permittedv swinging ofv the. other housings.
  • the carrier arm upon release. of the usual lockingy means retaining; the carrier arm in its operative position, for example, during a prolonged inoperative of the associated spinning or othertextile machine, allof the sets of twin top rolls, other than the above mentioned foremost set of twin top rolls, are lifted from the associated bottom rolls, while. the ⁇ foremost. twin top continue to rest on the bottom rolls under the relaf tively low pressure exerted bythe weight of the ⁇ carrier 4 arm, thereby to prevent the extension of the twist of the already drawnyarn into the drawing iield.
  • Fig. l is a longitudinal sectional view of the carrier y arm and associated parts of a drawing mechanism embodying the present invention
  • Fig. 2 is a horizontal sectional view taken along the line lI--II of Fig. l;
  • Fig. 3 is a fragmentary, longitudinal sectional view, similar to a portion of Fig. l, but showing another embodiment of the invention.
  • a iixed support orbracket 2 is suitably secured, for example, by a clamping bolt 3, to a supporting bar 1 provided on a spinning or other textile machine, and that the iixed'y support 2 includes side members having upwardly extending portions which carry a pin 4 extending therebetween.
  • the drawing mechanism embodying this invention in cludes a carrier arm made up of a rst component 6 which is pivotally mounted on the pin -4 and a second component which is generally identiied by the reference numeral 5 and is removably secured to the pivotally mounted component 6.
  • a conventional locking device-I (not shown) may be provided for preventing unintentional upwardswinging of the component 6 about pin 4', withI carrier arm in the illustrated operative position..
  • a suitable securing assembly 15 releasably secures section 14- of the removable com.- ponent '5 to the pivoted component 6 of the carrier arm.
  • such securing means 15 is shown to includer a hollow, internally tapped, flat-sided female member extending through correspondingly fiat-sided openings in the section 14 and the component 6 to avoid turning of the femaleV component, and a machine screw which passes through an opening of a lateral reinforcement of the section 14 and is threaded into the abovev described female member.
  • the removableI component 5 ofthe carrier arm further includes: an elongated section 14' having an upwardly opening, U-shaped cross-section and extending longitudinally from the section 14, with the adjacent ends of the sections14 and 14' being joined together by africtionless joint which permits lateral swinging of the section 14 relative to the section 14.
  • the frictionless. joint. between the sections 14 and 14 is formed by a thin sheet or plate 16 of flexible or resilient steel which is held between the adjacent. ends of the sections y14 and '14 by rivets, screws or the like.
  • Thev bottom of section 14' of the removable component of thecarrier arm is provided with a central elongated slot 7, and a holder 8 for each set of twin top rollsis slidable along the lower surface of the bottom of secti'on y14 and is formed with upstanding lugs-8' at the opposite. ends of the holder projecting slidably into the slot 7 for ensuring parallelism of the axes of the several sets of twin top rolls. Each holder 8 is releasably secured to.
  • the ⁇ section 14' by a screw 12 extending from theholder through the slot 7 and receiving a nut so that, when the nut ou the-screw 12 is loosened, the related holderl 8 may be moved along the section 14' in order to adjust the spacing between the sets4 of twin top rolls'.
  • Bach holder 8. has depending arms 9 which, at their lower ends, carry a pin 10l on which a, housing 11. is
  • Each housing or saddle 11 is intended to accommodate the bearing of a related set of twin ltop rolls which are ⁇ represented in broken lines, as at 13 on Fig. 1, and which may be constructed in the manner disclosed in United States Letter Patent No. 2,740,164, issued April 3, 1956, to E. F. Schmid and I. Raible.
  • each housing 11 is provided with an integral stop 20 or 20' disposed in back of the related arms 9 and engageable with the latter in order to limit the swinging of the housing by the associated springs 21, that is, in the direction moving the twin top rolls 13 downwardly away from the carrier arm.
  • the stop 20 of the housing 11 supporting the foremost set of twin top rolls that is, the set of twin top rolls disposed furthest from the pivoting axis of the carrier arm defined by the pin 4
  • the related housing 11 can swing through a greater angle, as represented by the broken lines on Fig. 1, than the angular movement of the other housings 11 permitted by the related stops 20.
  • the foremost twin top rolls 13 of the drawing mechanism will continue to rest upon the related bottom rolls (not shown), while the other sets of twin top rolls 13 are lifted from the bottom rolls associated therewith. Accordingly, during prolonged inoperative periods of the associated spinning or other textile machine, all of the twin top rolls, other than the foremost twin top rolls, can be raised from the related bottom rolls, while the foremost set of twin top rolls continues to rest on the related bottom rolls with the relatively light pressure resulting merely from the weight of the carrier arm in order to prevent the extension of the twist of the already drawn yarn into the drawing field.
  • the drawing mechanism is further provided with a protective cover 17 which extends around the components and 6 of the carrier arm and which is secured in position by the securing assembly 15 provided for releasably attaching the removable component 5 to the pivoted component 6.
  • FIG. 3 it will be seen that the embodiment of the invention there illustrated is generally similar to that described above with reference to Figs. 1 and 2, and that the several parts thereof are identified by the same reference numerals employed in connection with the description of the corresponding parts of the ⁇ first described embodiment.
  • the drawing mechanism of Fig. 3 differs from that of Figs. 1 and 2 only in that the removable component 5 of the carrier arm is adjustable longitudinally with respect to the component 6 which is permanently pivoted on the pin 4.
  • the web, or laterally extending portion of the U-shaped component 6 is formed with a longitudinal slot 18, and the securing assembly 19 for removably attaching component 5 to component 6 includes a screw passing through the protective cover 17, the slot 18 and an opening in a cross-bracing member of the section 14 of component 5, and a nut threaded on such screw below the cross-bracing member of section 14.
  • the spacing and weighting of the top rolls can be adjusted at a location remote from the spinning or other textilemachine in order to ensure accuracy in effecting the necessary adjustments, and in order to avoid a lengthy period of inoperativeness of the spinning machine during changes inthe conditionsu of the drawing mechanisms thereof.
  • a breakdown or failure in the drawing mechanism can be quickly and easily corrected merely by replacing such removable component of the carrier arm with a new component having properly functioning top rolls suspended therefrom.
  • the component S of the carrier arm is removable, such replacement of the weighting springs 21 or insertion of shims for varying the forces exerted thereby can be effected at a location -remote from the spinning or other machine, thereby to greatly facilitate the adjustment of the weighting forces.
  • a textile drawing mechanism comprising a fixed support, la carrier arm including first and second components and means releasably securing said components to each other in longitudinally aligned relationship, means pivotally mounting said first component of the carrier arm on said fixed support so tha-t the carrier arm can swing between an operative position, where said second component overlies a drawing field, and a raised inoperative position, said second component having a section of substantial length, a frictionless joint connecting said section to the remainder ⁇ of the second component to permit free lateral swinging of said section, sets of twin top rolls, means suspending said sets of twin top rolls from said section of the second component of said carrier arm, and means weighting said top rolls.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US720860A 1957-03-15 1958-03-12 Textile drawing mechanism Expired - Lifetime US2941263A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES52745A DE1054886B (de) 1957-03-15 1957-03-15 Oberwalzen-Trag- und -Belastungsarm fuer Spinnereimaschinen-Streckwerke

Publications (1)

Publication Number Publication Date
US2941263A true US2941263A (en) 1960-06-21

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Application Number Title Priority Date Filing Date
US720860A Expired - Lifetime US2941263A (en) 1957-03-15 1958-03-12 Textile drawing mechanism

Country Status (7)

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US (1) US2941263A (is")
BE (1) BE565175A (is")
CH (1) CH360005A (is")
DE (1) DE1054886B (is")
FR (1) FR1203576A (is")
GB (1) GB829396A (is")
NL (1) NL99991C (is")

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044128A (en) * 1958-10-25 1962-07-17 Skf Kugellagerfabriken Gmbh Gerber
US4969238A (en) * 1988-11-05 1990-11-13 Zinser Textilmaschinen Gmbh Apparatus for selectively securing a carrier member of a textile drafting apparatus
CN100352980C (zh) * 2004-10-29 2007-12-05 宁波韵升股份有限公司 一种紧密纺纱器传动装置的握持机构

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1087497B (de) 1959-02-25 1960-08-18 Skf Kugellagerfabriken Gmbh Schwenkbare Spindellagerung fuer Spinn- und Zwirnmaschinen
DE1123531B (de) 1959-02-25 1962-02-08 Skf Kugellagerfabriken Gmbh Spannrollenanordnung an einem Band- oder Riementrieb
DE1160342B (de) 1961-05-10 1963-12-27 Zinser Textilmaschinen Gmbh Zentrale Be- und Entlastungseinrichtung fuer Streckwerke an Spinnereimaschinen
DE1214121B (de) 1962-03-17 1966-04-07 Skf Kugellagerfabriken Gmbh Oberwalzen- Trag- und Belastungsarm fuer Spinnereimaschinen-Streckwerke

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2644988A (en) * 1949-11-16 1953-07-14 Tmm Research Ltd Means for supporting and loading the top rollers of textile drafting apparatus
US2675587A (en) * 1949-09-23 1954-04-20 Ver Kugellagerfabriken Ag Device for supporting and weighting the top rolls of drawing mechanisms
US2834995A (en) * 1953-02-27 1958-05-20 Tmm Research Ltd Drafting apparatus of textile spinning and like machines
US2834996A (en) * 1954-08-16 1958-05-20 Dixon Corp Saddle for spinning frame or the like
US2850770A (en) * 1958-09-09 Noguera

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2565228A (en) * 1948-09-03 1951-08-21 Saco Lowell Shops Drawing mechanism for spinning and roving frames
DE898420C (de) * 1949-02-27 1954-04-05 Ver Kugellagerfabriken Ag Fuehrung fuer paarweise angeordnete Oberwalzen von Streckwerken u. dgl.
CH330431A (de) * 1955-01-19 1958-06-15 Spinnerei Karl Marx Veb Oberwalzentrag- und -belastungsarm für Spinnereimaschinenstreckwerke

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2850770A (en) * 1958-09-09 Noguera
US2675587A (en) * 1949-09-23 1954-04-20 Ver Kugellagerfabriken Ag Device for supporting and weighting the top rolls of drawing mechanisms
US2644988A (en) * 1949-11-16 1953-07-14 Tmm Research Ltd Means for supporting and loading the top rollers of textile drafting apparatus
US2834995A (en) * 1953-02-27 1958-05-20 Tmm Research Ltd Drafting apparatus of textile spinning and like machines
US2834996A (en) * 1954-08-16 1958-05-20 Dixon Corp Saddle for spinning frame or the like

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3044128A (en) * 1958-10-25 1962-07-17 Skf Kugellagerfabriken Gmbh Gerber
US4969238A (en) * 1988-11-05 1990-11-13 Zinser Textilmaschinen Gmbh Apparatus for selectively securing a carrier member of a textile drafting apparatus
CN100352980C (zh) * 2004-10-29 2007-12-05 宁波韵升股份有限公司 一种紧密纺纱器传动装置的握持机构

Also Published As

Publication number Publication date
GB829396A (en) 1960-03-02
DE1054886B (de) 1959-04-09
FR1203576A (fr) 1960-01-20
CH360005A (de) 1962-01-31
NL99991C (is")
BE565175A (is")

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