US3705441A - Stripper for the drawing frames of spinning machines - Google Patents

Stripper for the drawing frames of spinning machines Download PDF

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Publication number
US3705441A
US3705441A US40129A US3705441DA US3705441A US 3705441 A US3705441 A US 3705441A US 40129 A US40129 A US 40129A US 3705441D A US3705441D A US 3705441DA US 3705441 A US3705441 A US 3705441A
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US
United States
Prior art keywords
shaft
roller
tube
stripper roller
mounting means
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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
US40129A
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English (en)
Inventor
Adolf M Muller
Josef Grosselfinger
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Individual
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Individual
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Filing date
Publication date
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Publication of US3705441A publication Critical patent/US3705441A/en
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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
    • D01H5/64—Rollers or aprons with cleaning surfaces
    • D01H5/645—Rollers or aprons with cleaning surfaces in cooperation with suction or blowing means

Definitions

  • ABSTRACT A leather-covered stripper roller, bearing upon one of two coacting transport rollers for the conveyance of filamentary material to remove adhering lint or fluff with the aid of an associated suction device, comprises a tube rotatably journaled on a fixed shaft which carries an externally operable brake engageable with the tube from withinJ
  • the brake preferably includes an elastically expandable sleeve which is intermittently inflatable by compressed air to arrest the stripper roller against frictional entrainment by the engaged transport roller.
  • a brake in the form of a resilient clamp guided in a groove provided in the stripping roller is used as the means by which the stripping roller is stopped.
  • the associated grooved roller is provided with a cam for the purpose of releasing the brake for a short period during each revolution of the grooved roller (German Patent Specification No. 1,253,618).
  • a tubular stripping roller mounted on a rigid shaft is connectable to a brake provided in the in-
  • the mounting of the brake in the interior of the stripping roller affords the decisive advantage that flock or other dirt is unable to settle in the zone of the brake.
  • the surfacesof the stripping roller and of its associated roller in the drawing frame need not be provided with a special profile as is necessary in the present state of the art, the generation of dynamic out-of-balance forces being thus prevented by this improvement.
  • the brake according to the invention may be of various constructions.
  • permanent magnets for example, permanent magnets, magneto-couplings, braking laminae, or other eleproduced during the pressure phase.
  • the stripping roller is advantageously at least partially enclosed by a suction device of known construction.
  • the brake may be a hollow cylinder having an elastically deformable, and thus expandable, wall extending along at least part of the inner surface of the tubular stripping roller.
  • the elastic wall may be deformed by mechanical means, for example by subjecting a cylindrical hose made of an elastic materialto an axial load whereby the zone in the middle of the cylinder is caused to bulge out and thus to bear with braking action against the inner surface of the stripping roller.
  • a fluid under pressure for example compressed air
  • guide members mounted in spaced-apart relationship on the shaft of the stripping roller are advantageously provided in engagement with the elastic jacket; a cylindrical spacer, whose outer surface is located at a short radial distance from the elastic jacket, is disposed between the guide members, and has a radial bore for the passage of the pressure medium.
  • At least one end face of the stripping roller may be provided with a bore for the supply of pressure medium and with a connecting fitting.
  • the brake according to the invention can be caused to bulge out by a short-time pressure impulse, and its elastic wall can thus be pressed' against the inner surface of the tubular stripping roller. Since the stripping roller is driven solely by friction, it is stopped practically instantaneously as two bodies contact each other over a large surface area. By suitable control of the pressure medium, the time for which the stripping roller is to remain stationary can be selectively varied, it being thus possible to adapt the operation to the properties of the sliver material.
  • filamentary material such as synthetic thread, or staple-fiber thread or thread of poor-quality cotton is spun.
  • FIG. 1 is a side elevation of a pair of drawing rolls with a stripping roller
  • FIG. 2 is a longitudinal section through the stripping roller shown in FIG. 1;
  • FIG. 3 shows a corresponding fragmentary longitudinal section through the stripping roller in the braked condition.
  • FIG. 1 shows diagrammatically, by way of example, one embodiment in which a stripping roller 3 is provided in the zone of a grooved transport roller 2 coacting with a pressure roller 2a to convey a sliver 5.
  • the stripping roller 3 is enclosed by a suction trough 4 connected to a suction duct 7. It is the purpose of the stripping roller 3 to remove flock or other dirt from the grooved roller 2 and to feed it to the zone of the suction trough 4 where the flock 8 then adhering to the surface of the stripping roller 3 is sucked off. Broken sliver may be sucked off through an entrance port 6 into the suction trough 4.
  • the stripping roller 3 contains a brake (not shown in FIG.
  • FIGS. 2 and 3 show by way of example one advantageous construction of a brake of this kind provided in the interior of the stripping roller 3.
  • the stripping roller 3 comprises a fixed shaft and, mounted thereon, a rotatable tube 9 sheathed in a leather cover 19.
  • the leather cover 19 extends over a pair of end disks forming hubs in which the shaft 10 is secured in position as well as held against rotation.
  • the rotatable tube 9 is mounted on the shaft 10 by means of bearings 21.
  • the hubs 20 are surrounded by the leather cover 19 only for sealing purposes, no fixed connection existing at this location between the hubs and the tube 9.
  • a brake 11 in the form of an inflatable cylinder is provided in the interior of the tube 9.
  • Mounted on the shaft 10 in axially spaced relationship are two collars or guide members 12 to which an elastic jacket or sleeve 13, for example a rubber hose, is secured.
  • a spacing element 14 extends between the collars 12, this spacer consisting, for example, of a sleeve mounted on the shaft 10 or connected to these collars by means of hubs.
  • the diameter of the cylindrical surface of the spacing element 14 is such as to leave a narrow annular pressure space 15 between the elastic jacket 13 and the spacing element 14, this space being in communication with a pressure source through a radial bore 16, an axial bore 17 and a connecting fitting 18.
  • the outer surface of the elastic jacket 13 is normally spaced by a small annular clearance 22 from the inner surface of the tube 9.
  • a control valve (not shown) will be used by which the connection between the pressure source and the pressure space 15 is interrupted. Tests carried out with the system described have shown that the frictional contact between the elastic jacket 13 and the rotatable tube 9 is instantaneously interrupted when the control valve disconnects the pressure source from the clearance 15 and connects the latter with the ambient atmosphere. It is surprising that it is possible to obtain with the system embodying an invention a sudden stopping of the stripping roller and an equally sudden rotation thereof without the occurrence of uncontrollable slip phenomena.
  • the brake illustrated in FIGS. 2 and 3 is an advantageous construction given merely by way of example.
  • the invention may be realized in various ways.
  • an inflatable bag may be provided which in its inflated condition is in frictional contact with suitable surfaces of the tubular stripping roller 9 which may, for example, also be of laminated construction.
  • Mechanical, electric or electromagnetic couplings or brakes of known construction may also be provided in the interior of the stripping roller.
  • a hydraulic pressure medium may be used, but modifications of this kind do not entail the advantages afforded by the construction illustrated in the drawing and described by way of example, namely that the stripping roller is stopped with low inertia and little of energy without the occurrence of dynamic forces.
  • a system for conveying filamentary material with the aid of a pair of coacting transport rollers the combination therewith of fixed mounting means including a shaft, a stripper roller frictionally engaging one of said transport rollers for cleaning the surface thereof, said stripper roller including a tube rotatably joumaled on said shaft, and brake means on said mounting means inside said stripper roller engageable therewith from within, said brake means comprising a body on said shaft with an elastically deformable wall portion and being externally operable for arresting said stripper roller against frictional entrainment by the engaged transport roller by expanding said deformable wall portion into contact with the inner wall of said tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)
US40129A 1969-05-23 1970-05-25 Stripper for the drawing frames of spinning machines Expired - Lifetime US3705441A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691926419 DE1926419A1 (de) 1969-05-23 1969-05-23 Putzvorrichtung fuer Streckwerke von Spinnereimaschinen

Publications (1)

Publication Number Publication Date
US3705441A true US3705441A (en) 1972-12-12

Family

ID=5735039

Family Applications (1)

Application Number Title Priority Date Filing Date
US40129A Expired - Lifetime US3705441A (en) 1969-05-23 1970-05-25 Stripper for the drawing frames of spinning machines

Country Status (5)

Country Link
US (1) US3705441A (enrdf_load_stackoverflow)
CH (1) CH513257A (enrdf_load_stackoverflow)
DE (1) DE1926419A1 (enrdf_load_stackoverflow)
FR (1) FR2043637B1 (enrdf_load_stackoverflow)
GB (1) GB1265113A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306337A (en) * 1978-03-15 1981-12-22 Luwa Ag Pneumatic cleaning apparatus for the infeed table of a spinning machine
US20150040355A1 (en) * 2013-08-12 2015-02-12 Kabushiki Kaisha Toyota Jidoshokki Cleaner for fiber bundle feeder in fore-spinning frame
CN112160048A (zh) * 2020-09-29 2021-01-01 南京特塑复合材料有限公司 在线清洁辊面的展纤装置及展纤方法
CN114108144A (zh) * 2021-11-29 2022-03-01 朱宝昌 一种基于除绒并条机的石墨烯锦纶混纺并条工艺

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4625836A (en) * 1982-11-10 1986-12-02 Robotic Systems Limited Locking device for movable arm assembly
JP2750417B2 (ja) * 1989-10-03 1998-05-13 豊和工業株式会社 紡機のドラフト装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE609142C (de) * 1933-01-01 1935-02-08 Ernst Toeniessen Putzvorrichtung fuer die Unterwalzen von Strecken und Streckwerken
GB965414A (en) * 1959-09-03 1964-07-29 Ernst Jacobi A clearer roller for spinning frames, more particularly fly frames or like
US3408698A (en) * 1965-11-02 1968-11-05 Franz X Rosele Apparatus for cleaning the drawing rollers in spinning machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE609142C (de) * 1933-01-01 1935-02-08 Ernst Toeniessen Putzvorrichtung fuer die Unterwalzen von Strecken und Streckwerken
GB965414A (en) * 1959-09-03 1964-07-29 Ernst Jacobi A clearer roller for spinning frames, more particularly fly frames or like
US3408698A (en) * 1965-11-02 1968-11-05 Franz X Rosele Apparatus for cleaning the drawing rollers in spinning machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306337A (en) * 1978-03-15 1981-12-22 Luwa Ag Pneumatic cleaning apparatus for the infeed table of a spinning machine
US20150040355A1 (en) * 2013-08-12 2015-02-12 Kabushiki Kaisha Toyota Jidoshokki Cleaner for fiber bundle feeder in fore-spinning frame
CN112160048A (zh) * 2020-09-29 2021-01-01 南京特塑复合材料有限公司 在线清洁辊面的展纤装置及展纤方法
CN112160048B (zh) * 2020-09-29 2021-12-31 南京特塑复合材料有限公司 在线清洁辊面的展纤装置及展纤方法
CN114108144A (zh) * 2021-11-29 2022-03-01 朱宝昌 一种基于除绒并条机的石墨烯锦纶混纺并条工艺

Also Published As

Publication number Publication date
FR2043637A1 (enrdf_load_stackoverflow) 1971-02-19
GB1265113A (enrdf_load_stackoverflow) 1972-03-01
CH513257A (de) 1971-09-30
FR2043637B1 (enrdf_load_stackoverflow) 1974-03-15
DE1926419A1 (de) 1970-12-10

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