US3541630A - Roll clearing - Google Patents

Roll clearing Download PDF

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Publication number
US3541630A
US3541630A US679901A US3541630DA US3541630A US 3541630 A US3541630 A US 3541630A US 679901 A US679901 A US 679901A US 3541630D A US3541630D A US 3541630DA US 3541630 A US3541630 A US 3541630A
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US
United States
Prior art keywords
roll
nozzle
shoe
suction
rolls
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
US679901A
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English (en)
Inventor
Harry S Barr Jr
William C Bess Jr
Alfred C Morrow
Rudolph Hovan Hocutt
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.)
Pneumafil Corp
Original Assignee
Pneumafil Corp
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 Pneumafil Corp filed Critical Pneumafil Corp
Application granted granted Critical
Publication of US3541630A publication Critical patent/US3541630A/en
Assigned to FIRST NATIONAL BANK AND TRUST COMPANY OF OKLAHOMA CITY, THE reassignment FIRST NATIONAL BANK AND TRUST COMPANY OF OKLAHOMA CITY, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CIMOIL CORPORATION, CMI CORPORATION, CMI INTERNATIONAL CORPORATION, GRAMCO SPECIALITIES, INC., MACHINERY INVESTMENT CORPORATION, PANOPLY REINSURANACE COMPANY, LTD.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/62—Non-rotary cleaning pads or plates; Scrapers
    • D01H5/625—Non-rotary cleaning pads or plates; Scrapers in cooperation with suction or blowing means

Definitions

  • a roll engaging wiping shoe is movably supported on the nozzle on the side of the nozzle orifice forward of the orifice with respect to the direction of rotation of the roll to be cleared.
  • This invention relates to the art of roll clearing, and more particularly to an improved technique for clearing rolls of accumulations of foreign matter by the utilization of a suction air stream.
  • suction clearing nozzles have been evolved to implement the removal of foreign matter from the surfaces of processing rolls, as in the textile arts where the drafting rolls of textile processing apparatus such as spinning frames, roving frames and the like must be maintained free of accumulations of foreign matter. Such accumulations result when fiber residues which tend to coat the rollers, cause the fibers themselves to stick to the rollers, producing so-called lap ups.
  • a variety of suction clearing apparatus employing a suction nozzle in combination with a movable shoe to accommodate roll movement, such for example as shown by U.S. Pat. 3,251,101.
  • a suction nozzle is arranged in proximity to the surface of the rolls to be cleared, and a slidable sleeve-like shoe is extended from the nozzle orifice to ride over the roll surface.
  • the movable shoe permits axial displacement of the roll 'without requiring nozzle movement.
  • the shoe contacts the roll surface at the leaving side of the surface with respect to the orifice.
  • a further object of the invention is to provide suction clearers for axially movable rolls in which accumulations of foreign matter on the clearer components are eliminated.
  • Another object of the invention is to provide a suction clearer for rolls which are axially movable without requiring movement of the nozzle of the clearer.
  • a further object of the invention is to provide an irnproved suction clearing nozzle arrangement.
  • nozzles connected by appropriate suction duct work to a low pressure source, such as the intake side of a fan.
  • the nozzles are arranged with their intake orifices at a spaced distance from the moving surfaces to be cleared, which in the illustrated embodimnet here described, are shown by way of example as the surfaces of textile processing rolls, such as drafting rolls.
  • the roll surface is wiped advance of its movement into the air stream established by the nozzles.
  • a wiping shoe which is movably mounted with respect to a stationary nozzle to engage the roll surface to be cleared in advance of its movement into the air stream, or as hereinafter described as forward of the orifice with respect to the direction of rotation of the roll.
  • a feature of the invention resides in the recognition of the fact that roll clearing efficiency may be significantly improved by the utilization of the suction ducts in which a wiping member is positioned to engage the surface of the roll to be cleared at a point forward of the nozzle orifice.
  • Another feature of the 4invention resides in the provision of a roll engaging wiping shoe on a roll clearing suction nozzle in which the roll axis may be displaced with respect to the nozzle without interfering with clearing efficiency by arranging the shoe for movement with respect to the nozzle, while maintaining contact with the roll surface.
  • a further feature of the invention resides in the ar- ⁇ rangement of the wiping shoe at a spaced distance from the suction nozzle to minimize crevices in which foreign matter may accumulate.
  • FIG. 1 is a perspective view of a suction nozzle provided with a wiping shoe in accordance with the teaching of this invention, as viewed from the rear of the top front roll of a roll stand, and showing a roll in phantom;
  • FIG. 2 is a schematic side elevational view of a suction roll clearer and shoe shown in operative position with respect to a roll, such as the top front roll of a spinning frame;
  • FIG. 3 is a front elevational view, looking from the left of FIG. 2;
  • FIG. 4 is a cross-sectional view on line 4-4 of FIG. 3 showing the relationship between the wiping shoe and the suction nozzle;
  • FIG. 5 is a cross-sectional view through the wiping shoe illustrating a preferred weighting arrangement therefor.
  • the clearer comprises a nozzle 12, having a rounded rectangular cross section, as best seen in FIG. 4.
  • the lower end of the nozzle 12, facing the roll R to be cleared is provided with faux wall 14 having orifice 15 formed therein.
  • the upper end of the nozzle 12 is formed with flange 17 at a slightly spaced distance from the top thereof, so that the top of the nozzle 12 projects above the ange 17 as a nipple 18.
  • Flange 17 is preferably contoured to engage the surface of suction duct 20 with nipple 18 of a length preferably less than the thickness of the duct side wall and projecting through the side wall of the suction duct to provide a smooth air path between the interior of the nozzle 12, and the suction duct or flute 20.
  • pivot pins 22 and 23 Extending from the opposite ends of nozzle 12, as viewed in FIGS. 3 and 4, are pivot pins 22 and 23.
  • Roll engaging wiping shoe is pivotally secured with respect to the sleeve by means of pivot pins 22 and 23.
  • Shoe 25 is of a yoke shaped configuration, as best seen in FIG. 4, comprising clearer plate 27 having ears 28 and 29 which straddle nozzle 12. Ears 28 and 29 are formed with pivot pin engaging openings 32 and 33 respectively, which are slightly larger in diameter than the pivot pins 22 and 23 respectively so as to loosely fit over the pivot pins.
  • Wiping shoe plate 27 is preferably formed with a rounded nose 35 providing line contact with the surface of roll R, as best seen in FIG. 2.
  • the components of the nozzle assembly including nozzle 12 and clearer shoe 25 are preferably formed of any one of a wide variety of moldable plastics.
  • Polymers such as Du Ponts Delrin or Celaneses Celcon, are found suitable.
  • weight 38 of a relatively high density material, such as steel, lead, or the like, in the plate. This may be accomplished by molding the weight 38 directly into the shoe 25 at the time of molding, or by routing out a recess for the weight, and after insertion of the recess, superposing a cover plate over the plate.
  • the inventive concept here disclosed resides in a recognition of the fact that where suction nozzles are employed for roll clearing, it is generally found necessary to implement removal of accumulations of material from the roll surface by wiping the surface of the roll as it passes into the air stream established by a suction nozzle.
  • Conventionally employed roll wiping members must be movably supported with respect to the relatively fixed nozzles, so as to accommodate axial displacement of the rolls, and so as to accommodate roll irregularities Without damaging the rolls.
  • Previously evolved movable wiper members have been 'subject to fouling by the foreign matter removed from the rolls, with the foreign matter accumulating on the sides of the wiping member remote from the nozzle orifice and in creyices between the wiping member and the nozzle.
  • this is eliminated by positioning the wiping member on the nozzle with clearance between the wiper and the nozzle, and with the wiper positioned forwardly of the nozzle with respect to the roll surface. It appears that in accordance with Bernoullis theorem, the speed of rotation of the roll creates a slight vacuum immediately adjacent the surface of the roll with respect to the surrounding atmosphere, so that any accumulations of foreign matter on the roll surface remain pressed against the roll surface, and are drawn beneath the wiper member. Upon passing out from under the wiper member, the reduction in pressure provided by the upward curve of the wiper nose permits the foreign matter to move up the wiper member. Additionally, the spacing between the ⁇ wiper and nozzle wall permits the flow of air through this space to remove any foreign matter therefrom. Movement of the wiper shoe as a result of roll displacement further aids in dislodging any accumulations.
  • appropriate duct work or fiutes 20 are arranged to extend in the vicinity of the rolls to be cleared, and clear assemblies 10 are connected to the duct work, with the duct work being connected to an appropriate suction source, such as the intake side of a fan or the like.
  • One preferred embodiment which is above described and illustrated employs a pivotally mounted roll engaging wiper shoe 25 arranged on a suction nozzle 12, with the suction nozzle at a spaced distance from the roll surface.
  • a clearer assembly 10 serves to clear the rolls of accumulations of foreign matter, and any lap ups dislodged by the action of the clearer' shoe against the roll surface pass beneath nose 35 and are drawn into the air stream established by the nozzle 12.
  • the reduced pressure produced by the flow of the suction air stream passing into nozzle 12 along with the reduction of pressure from the movement of the layer of air immediately adjacent the roll surface out from beneath the nose 35, serves to dislodge any accumulations of material on the roll surface which are then drawn into the suction flute 20 for collection at some suitable remote point, such for example as by means of a Pneumafil collector unit, or the like.
  • means for clearing the rolls of any accumulations of foreign matter comprising. a suction duct positioned adjacent the rolls to be cleared; a suction nozzle coupled to said suction duct and extending therefrom toward the surface of a roll to be cleared, said nozzle having two spaced wall portions extending to an inlet orifice spaced from the surface of the roll to be cleared, said nozzle having two spaced wall portions extending to an inlet orifice spaced from the surface of the roll to be cleared; and a roll engaging shoe comprising a plate member having ears extending from said plate member to straddle the nozzle wall forward of the direction of roll rotation, said plate member movably supported on the nozzle, with an air space between the plate and the nozzle wall forward of the orifice with respect to the direction of rotation of the roll to be cleared to form a smooth surfaced air channel between said plate and said forward nozzle wall, [said wiping shoe engaging the roll surface forward of the perennial with respect to the direction of roll rotation.
  • said pivot connection comprises pivot pins extending from said nozzle 1 into openings in said ears which openings are larger than the pins.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
US679901A 1967-11-01 1967-11-01 Roll clearing Expired - Lifetime US3541630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67990167A 1967-11-01 1967-11-01

Publications (1)

Publication Number Publication Date
US3541630A true US3541630A (en) 1970-11-24

Family

ID=24728852

Family Applications (1)

Application Number Title Priority Date Filing Date
US679901A Expired - Lifetime US3541630A (en) 1967-11-01 1967-11-01 Roll clearing

Country Status (7)

Country Link
US (1) US3541630A (fr)
BE (1) BE723005A (fr)
CH (1) CH498212A (fr)
DE (1) DE1805923C3 (fr)
ES (1) ES360103A1 (fr)
FR (1) FR1590381A (fr)
GB (1) GB1189609A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825634A (en) * 1986-12-15 1989-05-02 Zinser Textilmaschinen Gmbh Suction tube for collecting broken ends of yarn at the outlet of a textile machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716864A1 (de) * 1987-05-20 1988-12-08 Skf Textilmasch Komponenten Unterriemchenhalter fuer spinnereimaschinen-streckwerke
CN112228379B (zh) * 2020-10-16 2022-11-22 中国航发沈阳发动机研究所 一种引气管

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719334A (en) * 1953-03-16 1955-10-04 Iii Andrew E Buchanan Scavenger hood for pin drafting machines
GB872939A (en) * 1958-12-09 1961-07-12 Ferdinand Reiterer Improvements in devices for cleaning rollers, more particularly for textile machines
FR1297224A (fr) * 1961-05-16 1962-06-29 Schlumberger Cie N Perfectionnements aux dispositifs de nettoyage de cylindres de machines textiles
US3101504A (en) * 1959-09-12 1963-08-27 Luwa Ag Cleaning device for yarn carrying rotary cylinders of textile machines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719334A (en) * 1953-03-16 1955-10-04 Iii Andrew E Buchanan Scavenger hood for pin drafting machines
GB872939A (en) * 1958-12-09 1961-07-12 Ferdinand Reiterer Improvements in devices for cleaning rollers, more particularly for textile machines
US3101504A (en) * 1959-09-12 1963-08-27 Luwa Ag Cleaning device for yarn carrying rotary cylinders of textile machines
FR1297224A (fr) * 1961-05-16 1962-06-29 Schlumberger Cie N Perfectionnements aux dispositifs de nettoyage de cylindres de machines textiles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825634A (en) * 1986-12-15 1989-05-02 Zinser Textilmaschinen Gmbh Suction tube for collecting broken ends of yarn at the outlet of a textile machine

Also Published As

Publication number Publication date
CH498212A (de) 1970-10-31
DE1805923B2 (de) 1975-01-09
GB1189609A (en) 1970-04-29
DE1805923C3 (de) 1975-08-14
ES360103A1 (es) 1970-06-16
DE1805923A1 (de) 1969-07-31
FR1590381A (fr) 1970-04-13
BE723005A (fr) 1969-04-01

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FIRST NATIONAL BANK AND TRUST COMPANY OF OKLAHOMA

Free format text: SECURITY INTEREST;ASSIGNORS:CMI INTERNATIONAL CORPORATION;CMI CORPORATION;CIMOIL CORPORATION;AND OTHERS;REEL/FRAME:004280/0861

Effective date: 19840301