US3663992A - Loading mechanism applied to the drafting mechanism of a spinning machine - Google Patents

Loading mechanism applied to the drafting mechanism of a spinning machine Download PDF

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Publication number
US3663992A
US3663992A US2462A US3663992DA US3663992A US 3663992 A US3663992 A US 3663992A US 2462 A US2462 A US 2462A US 3663992D A US3663992D A US 3663992DA US 3663992 A US3663992 A US 3663992A
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United States
Prior art keywords
eccentric
support
arm
spring
side walls
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Expired - Lifetime
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US2462A
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English (en)
Inventor
Nobugi Ooki
Kenzi Okubo
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NSK Ltd
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NSK Ltd
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Publication date
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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

Definitions

  • the loading mechanism of the invention is provided with [30] Forelgn Application Priority Data means for compensating the unparallelism of the top roller to June 30, 1969 Japan ..44/6l020 cmverafing 90mm 011%
  • the present invention relates to an improvement in the drafting mechanism of a spinning machine and more particularly to an improved loading mechanism applied to a third, fourth or a back top roller of the drafting mechanism.
  • the guide arms are capable of swinging about the respective supporting pin mounted on the respective saddle housing disposed to the carrier arm in such a way that the movement of the guide arms are limited in a plane parallel to a tangential plane in which the sliver moves, and the top rollers are loaded by means of spring loading which permits changes in pressure to be made in predetermined discrete steps.
  • the principal object of the present invention is to provide improvements in the known spring-loaded top roller arrangement which is always capable of compensating for the unarallel condition of the top roller to the cooperating bottom roller rotating at a very slow speed.
  • FIG. I is a side view of a drafting mechanism of the invention in a partly fragmentary elevational section
  • FIG. 2 is a side view of the supporting mechanism of the back top rollers shown in FIG. 1, respectively,
  • FIG. 3 is a perspective view of a support shown in FIG. 2,
  • FIG. 4 is a side view of the loading mechanism, partly in section, shown in FIG. 2 illustrating a detailed construction thereof,
  • FIGS. 5 and 6 are side views of the modified loading mechanism, partly in section, according to the present invention.
  • FIG. 7 is a side view of another modified loading mechanism, partly in section, according to the present invention.
  • FIG. 8 is a perspective view of an eccentric member utilized for the loading mechanism shown in FIG. 7,
  • FIG. 9 is a sectional side view of a further modified loading mechanism according to the present invention.
  • FIG. 10 is an exploded perspective view of elements of the loading mechanism shown in FIG. 9.
  • FIG. 1 showing a drafting mechanism of a three line system
  • a pair of back top rollers are coaxially connected by a shaft of smaller diameter and the shaft of the top rollers 1 is rotatably mounted on a roller supporting portion of a back guide arm 2 so that the top rollers 1 are supported in parallel condition to the back bottom roller 3.
  • a pendulum arm mechanism utilizing a spherical supporting mechanism is applied for supporting the guide arm 2 upon a support 4. Therefore, a three-dimensional adjustment of the supporting condition of the top back rollers l is possible.
  • the supporting mechanism is shown in the drawings as comprising a ball 20 seated in a depression in a supporting portion 4g of the support 4 and engaging in a depression 2a at one end of the guide arm 2.
  • an improved loading mechanism 5 is applied to solve the above-mentioned problem.
  • the support 4 has side walls 4a and 4b and an upper wall 4h.
  • the support 4 is adjustably mounted on a top plate 6a of a carrier arm 6 by a top plate 40 and a fastening bolt 7.
  • a helical spring 8 is connected at its bottom end to an abutment member 9 turnably mounted on an intermediate position of the guide arm 2 and connected at its top end to a cylindrical projection 4d projected downward from the top plate 4c of the support 4 in a compressed condition.
  • the abutment member 9 comprises an eccentric set screw 9a threaded in the guide arm 2 as shown in the drawing.
  • the eccentric set screw 9a is provided with a cap 9b eccentrically integrated to the top of the set screw 9a so that the cap 9b is coaxially engaged with a spring washer 8a connected to the bottom end of the spring 8.
  • the eccentric set screw 9a is provided with a female aperture 9f opened downward so that a screwdriver 10 can be engaged.
  • the size and shape of the helical spring 8 are so designed that the spring 8 is almost restricted in its lateral movement by the side walls 4a and 4b.
  • the above-mentioned unparallel condition of the top rollers 1 against the cooperating bottom rollers 3 can be corrected by adjusting the relative eccentricity of the eccentric set screw 9a to the longitudinal axis of the helical spring 8.
  • the above-mentioned adjustment of the relative eccentricity of the eccentric set screw 9a to the longitudinal axis of the helical spring 8 can be carried out by turning the eccentric set screw 9a applying the manual operation with the screwdriver 10.
  • the support 4 is provided with a pair of projections 4e inwardly projected from the bottom ends of the side walls 4a and 4b. This projections works as a pair of stop means for restricting the downward movement of the guide arm 2.
  • FIGS. 5 and 6 Modified embodiments of the loading mechanism are shown in FIGS. 5 and 6.
  • the shape of the spring washer 8a and the eccentric set screw 9a are changed in an opposite way, while in FIG. 6, a ball 9c is slidably embraced between the spherical recesses 8b, 9a formed in the spring washer 8a and the cap 9b of the. eccentric set screw 9a.
  • FIGS. 7 and 8 A further modified embodiment of the loading mechanism is shown in FIGS. 7 and 8.
  • a cylindrical projection 4f corresponding to the cylindrical projection 4d is provided with a coaxial aperture passing therethrough.
  • the eccentric plate 11 is provided with an upper projection 1 lb and a lower curved projection 1 1c integral with a main body llla in such a way that the upper projection 11b and the main body 11a have a common longitudinal turn axis while the curved projection 11c has an eccentrical turning axis with respect to the common axis.
  • the upper projection 11b is tumably engaged with the aperture of the cylindrical projection 4e while the lower curved projection 11c passes through an aperture formed in the guide arm 2 and its curved end contacts the guide arm 2, as shown in FIG. 7. Therefore, if the eccentric plate 11 is turned by turning the upper projection 11b, the compensation of the unparallel condition of the top back roller 1 to the cooperating bottom roller 3 can be similarly attained.
  • FIGS. 9 and 10 A still further modified embodiment of the loading mechanism according to the present invention is shown in FIGS. 9 and 10.
  • an eccentric member 12 having a similar function as the eccentric plate 11 (FIG. 7), is utilized.
  • the eccentric member 12 comprises a main cylindrical body 12a and an upper cylindrical projection 12b and a lower cylindrical projection 12c.
  • the main cylindrical body 12a and the upper cylindrical projection 12b have a common longitudinal axis while the lower cylindrical projection 120 has an eccentric axis.
  • the upper projection 12b is turnably engaged with an aperture formed in the cylindrical projection 4d while the lower projection 12c is also turnably engaged with the aperture of the guide arm 2.
  • the compensation of the unparallel condition of the back top rollers l to the cooperating bottom rollers 3 can be similarly carried out by turning the eccentric member 12 by means of a tool inserted in slot 9f in the lower projection 120.
  • the above-mentioned loading mechanism can be applied for compensating for the unparallel condition of the top rollers to the cooperating bottom roller in case these rollers rotate at so slow a speed that the ability of the self-compensation of the unparallel condition is poor.
  • the guide arm is spherically supported upon the support.
  • a conventional supporting means such as a supporting means utilizing a pivot pin so as to turnably supporting the guide arm about the pivot pin, it was confirmed that the above-mentioned loading mechanism of the present invention can be satisfactorily applied.
  • a drafting mechanism for a spinning machine having a pair of bottom rollers and a cooperating pair of top rollers having a shaft
  • means for loading said top rollers against said bottom rollers comprising a common carrier member, a support having a top plate, spaced side walls and a lower arm-supporting portion, means for mounting said support by its top plate on said common carrier, a guide arm bearing at one end on said top roller shaft and having a portion received between said side walls of said support with play between said side walls and said arm portion, means supporting the opposite end of said guide arm on said lower arm-supporting portion of said support for pivotal movement about said supporting means and for lateral movement of said guide arm, an abutment member disposed on a portion of said arm intermediate its ends and between said side walls of said support, a springrcceiving member on said top plate on said support, a helical compression spring received between said abutment member and said spring receiving member, said spring being received snugly between said side walls and having a diameter greater than the width of said
  • An improved loading device according to claim 1, wherein said means supporting said opposite end of said guide arm comprises opposite recesses in said arm and said lower arm-supporting portion of said support and a ball disposed between said arm and said support engaging in said recesses.
  • said abutment member further comprises a spherical contacting member receiving a bottom end of said helical spring, said eccentric member is provided with a spherically shaped portion formed at a top thereof, a central axis of said spherically shaped portion is eccentric from a turning axis of said eccentric member, said spherical contacting spring movably contacts said spherically shaped portion directly.
  • said abutment member further comprises a contacting member receiving a bottom end of said helical spring, said contacting member is provided with a recess, said eccentric member is provided with a projection formed at a top thereof, a central axis of said recess is eccentric from a turning axis of said eccentric member, said recess of said contacting member movably contacts said projection directly.
  • said abutment member further comprises a contacting member receiving a bottom end of said helical spring, said contacting member is provided with a downward projection, said eccentric member is provided with a recess formed at a top thereof, a central axis of said projection is eccentric from a turning axis of said eccentric member, said projection of said contacting member movably contacts said recess of said eccentric member directly.
  • said abutment member further comprises a spherical member receiving a bottom end of said helical spring and a ball embraced between said spherical member and said eccentric member, said spherical member and said eccentric member are provided with a spherical shaped recess for movably contact said ball, respectively, said spherical shaped recess of said eccentric member is eccentrically formed at a top of said eccentric member.
  • a drafting mechanism for a spinning machine having a pair of bottom rollers and a cooperating pair of top rollers having a shaft
  • means for loading said top rollers against said bottom rollers comprising a common carrier member, a support having a top plate, spaced side walls and a lower arm-supporting portion, means for mounting said support by its top plate on said common carrier, a guide arm bearing roller shaft and having a portion received between said side at one end on said top roller of said support with play between said side walls and said arm portion, means supporting the opposite end of said guide arm on said lower arm-supporting portion of said support for pivotal movement about said supporting means and for lateral movement of said guide'arm, an eccentric member disposed on a portion of said arm intermediate its ends and between said side walls of said support, a springreceiving member on said top plate on said support, a helical compression spring received between said guide arm and said spring receiving member, said spring being received snugly between said side walls and having a diameter greater than the width of said arm portion received between said side walls

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US2462A 1969-06-30 1970-01-13 Loading mechanism applied to the drafting mechanism of a spinning machine Expired - Lifetime US3663992A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6102169 1969-06-30
JP6102069 1969-06-30

Publications (1)

Publication Number Publication Date
US3663992A true US3663992A (en) 1972-05-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
US2462A Expired - Lifetime US3663992A (en) 1969-06-30 1970-01-13 Loading mechanism applied to the drafting mechanism of a spinning machine

Country Status (4)

Country Link
US (1) US3663992A (enrdf_load_stackoverflow)
BR (1) BR7017583D0 (enrdf_load_stackoverflow)
ES (1) ES376222A1 (enrdf_load_stackoverflow)
GB (1) GB1302911A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093390A (en) * 1975-10-29 1978-06-06 Ntn Toyo Bearing Co. Ltd. Bracket tightening device
US4187588A (en) * 1975-12-26 1980-02-12 Ntn Toyo Bearing Co. Ltd. Construction of pendulum arm type high sensitivity self-aligning weighting arm
DE3016814A1 (de) * 1979-05-28 1980-12-11 Textima Veb K Oberwalzen-belastungsmittel fuer spinnereimaschinen-streckwerke
US7419138B1 (en) * 2007-02-23 2008-09-02 Cmc Rescue, Inc. Self-camming pulley
US20120297748A1 (en) * 2010-02-12 2012-11-29 Maschinenfabrik Rieter Ag Drawing Frame for a Spinning Machine
US20190360128A1 (en) * 2018-05-24 2019-11-28 Saurer Spinning Solutions Gmbh & Co. Kg Drafting system and drafting system unit for a spinning machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801448A (en) * 1955-12-19 1957-08-06 Saco Lowell Shops Textile drafting mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801448A (en) * 1955-12-19 1957-08-06 Saco Lowell Shops Textile drafting mechanism

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Kramer, German Application 1,126,287 Printed Mar. 22, 1962 *
Kubler, German Application 1,066,921 Printed Oct. 8, 1959 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4093390A (en) * 1975-10-29 1978-06-06 Ntn Toyo Bearing Co. Ltd. Bracket tightening device
US4187588A (en) * 1975-12-26 1980-02-12 Ntn Toyo Bearing Co. Ltd. Construction of pendulum arm type high sensitivity self-aligning weighting arm
DE3016814A1 (de) * 1979-05-28 1980-12-11 Textima Veb K Oberwalzen-belastungsmittel fuer spinnereimaschinen-streckwerke
US7419138B1 (en) * 2007-02-23 2008-09-02 Cmc Rescue, Inc. Self-camming pulley
US20120297748A1 (en) * 2010-02-12 2012-11-29 Maschinenfabrik Rieter Ag Drawing Frame for a Spinning Machine
US8671657B2 (en) * 2010-02-12 2014-03-18 Maschinenfabrik Rieter Ag Drawing frame for a spinning machine
US20190360128A1 (en) * 2018-05-24 2019-11-28 Saurer Spinning Solutions Gmbh & Co. Kg Drafting system and drafting system unit for a spinning machine
US11879186B2 (en) * 2018-05-24 2024-01-23 Saurer Spinning Solutions Gmbh & Co. Kg Drafting system and drafting system unit for a spinning machine

Also Published As

Publication number Publication date
BR7017583D0 (pt) 1973-01-09
GB1302911A (enrdf_load_stackoverflow) 1973-01-10
ES376222A1 (es) 1972-07-01

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