US3885272A - Pneumatic cleaning plant for drawing systems in spinning preparation machines and spinning machines - Google Patents

Pneumatic cleaning plant for drawing systems in spinning preparation machines and spinning machines Download PDF

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Publication number
US3885272A
US3885272A US384974A US38497473A US3885272A US 3885272 A US3885272 A US 3885272A US 384974 A US384974 A US 384974A US 38497473 A US38497473 A US 38497473A US 3885272 A US3885272 A US 3885272A
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United States
Prior art keywords
drawing system
spinning
machines
suction
air
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Expired - Lifetime
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US384974A
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English (en)
Inventor
Angelo Marzoli
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Folli Marzoli and C SpA
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Folli Marzoli and C SpA
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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
    • D01H5/60—Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/66—Suction devices exclusively
    • 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 pneumatic cleaning plant for drawing systems in spinning preparation machines and spinning machines comprising suction means and means adapted to dispense puffs of air acting on the parts of the machine to be cleaned, so as to cause the dust and foreign particles adhering to these parts to be suspended in the surrounding air space, whereby said suspension is easily removed by suction.
  • the yarn consisting of an assembly of different length fibres is notably subjected to strong tensile stresses because of which a certain amount of fibre, especially the short fibre, becomes separated and dust forms. It is thus necessary to provide for cleaning the drawing members and removing the suspended fibres and fibrils and the dust.
  • Pneumatic cleaning devices consisting of suction nozzles fixed to the outlet of the grooved cylinders of the drawing system or close to said cylinders and the lower belts, with the purpose of sucking in and removing the suspended fibres and fibrils, the dust and any broken yarn.
  • these known pneumatic devices are completed by mechanical cleaning members, for example rubber bars, disposed in contact with the cylinders and belts.
  • the object of this invention is to provide a pneumatic cleaning plant free from the aforementioned disadvantages and able to carry out its function with greater efficiency and durability without requiring frequent maintenance operations.
  • This object is attained by forcedly provoking the suspension in air of all the fibres, fibrils and dust which form in the zone of the drawing system and then sucking and removing said suspension from this zone.
  • puffs of preferably mobile air are made to act in the space so as to also raise those particles which may have been deposited on the members of the drawing system and to mix them with the suspended particles, so forming with them a suspension in air which can be easily sucked in and removed.
  • the pneumatic cleaning plant according to the invention for carrying out the aforementioned concept comprises means for placing the zone of the drawing system under suction, and mobile means for feeding air jets into said zone for striking the members of the drawing system.
  • the mobile means for feeding air jets may be provided with traverse reciprocating or rotational motion and are connected by suitable tubes to at least one motorised fan.
  • the means for feeding the air jets may consist of a component element of the drawing system.
  • the means for feeding the air jets may be the hollow bar, suitably bored, which supports the brackets for the tensioning devices of the lower belts; in this case the rotary motion may be derived from one of the lower drawing cylinders by means of a suitable drive.
  • a header in the form of a funnel extending over the entire length of the machine and connected at its base by way of a slot with a channel connected in its tum to at least one motor driven suction fan.
  • Said channel may be provided with openings for drawing in any broken yarn or roving.
  • FIG. 1 is a diagrammatic cross section through the assembly of drawing devices in a spinning machine to which the plant according to the invention is applied.
  • FIG. 2 is a detailed view from above of the system for feeding air under pressure
  • FIG. 3 is a diagrammatic section analogous to that of FIG. 1 in which the plant according to the invention is applied to a spindle frame;
  • FIG. 4 is a perspective view of the derivation of motion for the rotating air feed member
  • FIG. 5 is a rear view of the cleaning plant according to the invention applied over the entire length of the spindle frame.
  • FIGS. 1 and 3 show a drawing system in which the yarn 1 passes between pairs of drawing rollers 2 and 4 mounted in a lower support and respective pressure rollers 5 and 7 rotatably mounted in a swinging arm 8.
  • the fibres of the yarn are controlled between these pairs of rollers by an upper belt 9 guided above a roller 3 and a lower belt 10 guided above a roller 6 and kept taut by a tensioning device Ill which is supported by a bracket 12 carried by a hollow bar 13.
  • Bars 14 and 15 driven with straight line reciprocating motion are brought intermittently into contact with the surfaces of the drawing rollers 2 and 4 respectively.
  • the yarn 1 leaving the drawing device is fed to the winding devices 16 (FIG. 3).
  • the yarn is drawn in the zone between the drawing rollers 2 and 4 by the effect of the pressure exerted by the corresponding pressure rollers 5 and 7. Because of the increasing speed of rotation between the drawing rollers 2 and 4 the yarn undergoes elongation and is strongly stressed. Because of these stresses, short fibres and fibrils become separated from the yarn (and dust is created), partly staying suspended and partly depositing especially on the fixed members.
  • the purpose of the belts 9 and 10 is to guide and control the yarn, and fibres, fibrils etc. also deposited on it.
  • the purpose of the bars 14 and 15 is to mechanically remove the fibrils adhering to the surfaces of the drawing rollers 2 and 4. These are driven with reciprocating motion so that they become intermittently removed from the rollers and create a compulsory passage for the agitated air as will be explained hereinafter.
  • the cleaning plant according to the invention firstly provides means for feeding jets of air at pressure into the drawing system zone in order to agitate and suspend in the air all the impurities including those which may have deposited on the members of the drawing system.
  • a header channel 17 is provided which extends over the entire length of the machine and is supplied with air under pressure from a motor driven fan 34. Flexible pipes 18 lead from this channel 17.
  • one of said pipes 18 is provided for every four spindles.
  • Each pipe opens into a closed box 19 traversed by the hollow bar 13, which within the box comprises holes 20 so that the air under pressure can pass into the bar.
  • the hollow bar 13 is provided with a plurality of holes 21 through which the air under pressure can leave in the form of jets (see the arrows in FIGS. 1 and 3) so as to strike the members of the drawing system.
  • gears 22 and 23 (FIG. 4) mounted respectively on the hollow bar 13 and axle 24 of the drawing roller 2 together with the connection between them by means of a chain 25, the drawing roller 2 transmits its rotational motion to the bar 13 which consequently expels the air jets with turbulent motion.
  • the air jets leaving the holes 21 of the hollow bar 13 carry out a brushing action on the various members of the drawing system so that existing impurities cannot be deposited on them and they are instead effectively placed in suspension.
  • a funnel intake header 28 the open mouth of which faces the members of the drawing system and which extends over the entire length of the machine.
  • This intake header is connected by way of a bottom slot 27 to a channel 26 which also extends over the entire length of the machine.
  • Two channel headers 29 extend from the channel 26 and are connected to the suction ports of two motor driven suction fans 30, the delivery ports 31 of which convey the indrawn air and impurities to a channel 32 and finally to a filter box 33, where the impurities are retained while the air is expelled into the room or to the outside.
  • the channel 26 is also provided with suction ports 35 facing the direction of the yarn or roving leaving the drawing systems, through which any broken yarn or roving is sucked and removed.
  • the feeding of air under pressure could also take place by other rotating or otherwise mobile members situated in the zone close to the drawing systems.
  • the intake header instead of extending along the entire machine could be divided into a number of compartments.
  • a pneumatic cleaning plant for drawing systems in spinning preparation machines and spinning machines having drawing and belt drive rollers comprising, in combination, means for placing a drawing system zone under suction and comprising: a suction fan with outlet communicating with the atmosphere outside said drawing system zone, and a funnel-shaped intake member connected to said suction fan; and blowing means having at least one movable member separated from said drawing and belt drive rollers for feeding jets of air into said zone, said blowing means comprising at least one rotating movable member, with a plurality of holes, and motor driven fan means connected to said rotating movable member; said blowing means being a component of the drawing system; a lower belt for the drawing system; and a tensioning device for said lower belt, said component comprising a support bar for said tensioning device.
  • a plant as claimed in claim 1 including lower rollers of the drawing system, one of said lower rollers being linked to said rotating movable member for applying rotary motion to said rotating movable member in which the rotary motion of the member for feeding jets of air is derived from the movement of one of the lower rollers of the drawing system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US384974A 1972-08-10 1973-08-02 Pneumatic cleaning plant for drawing systems in spinning preparation machines and spinning machines Expired - Lifetime US3885272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT28081/72A IT963897B (it) 1972-08-10 1972-08-10 Impianto pneumatico di pulitura dei sistemi di stiro in macchine di preparazione alla filatura e di filatura

Publications (1)

Publication Number Publication Date
US3885272A true US3885272A (en) 1975-05-27

Family

ID=11222881

Family Applications (1)

Application Number Title Priority Date Filing Date
US384974A Expired - Lifetime US3885272A (en) 1972-08-10 1973-08-02 Pneumatic cleaning plant for drawing systems in spinning preparation machines and spinning machines

Country Status (7)

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US (1) US3885272A (cs)
CH (1) CH569099A5 (cs)
DE (1) DE2339880A1 (cs)
ES (1) ES417601A1 (cs)
FR (1) FR2195714B1 (cs)
GB (1) GB1432477A (cs)
IT (1) IT963897B (cs)

Cited By (7)

* 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
US4519199A (en) * 1981-05-15 1985-05-28 Spindelfabrik Sussen, Schurr, Stahlecker & Grill Gmbh Device for interrupting the feed of a roving to the drawing frames of a spinning machine
US4642852A (en) * 1984-06-14 1987-02-17 National Research Development Corporation Dust extractor for drawframe
US4662167A (en) * 1985-03-15 1987-05-05 Hans Stahlecker Spinning machine maintenance unit with fly catching needle
US4897202A (en) * 1988-01-25 1990-01-30 Pure-Chem Products, Inc. Process and apparatus for recovery and recycling conveyor lubricants
US4897203A (en) * 1988-02-26 1990-01-30 Pure-Chem Products, Inc. Process and apparatus for recovery and recycling conveyor lubricants
US4985967A (en) * 1989-03-10 1991-01-22 Fritz Stahlecker Drafting unit for a spinning machine with movable cover

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1246306B (it) * 1990-10-23 1994-11-17 Savio Spa Perfezionamenti nelle macchine a filare con impianto pneumatico di aspirazione per l'asportazione di pulviscolo, velo di fibre e fili rotti.
DE10061405A1 (de) * 2000-12-09 2002-06-13 Rieter Ag Maschf Vorrichtung zum Absaugen von Verunreinigungen in einer Textilmaschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126586A (en) * 1960-10-10 1964-03-31 Noguera
US3237249A (en) * 1963-12-05 1966-03-01 Maremont Corp Hollow air cleaning rolls
US3346926A (en) * 1965-01-05 1967-10-17 Andreani Eugenio Textile apron stabilizing and cleaning system for drafting units
US3387318A (en) * 1964-05-04 1968-06-11 Pneumafil Corp Blow cleaning

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1334487A (fr) * 1962-06-28 1963-08-09 Perfectionnements aux dispositifs de nettoyage des trains d'étirage de fibres textiles
DE1248521B (de) * 1963-02-06 1967-08-24 Saco Lowell Shops Vorrichtung zum Entfernen von Faserflug an Spinnereimaschinen-Streckwerken

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126586A (en) * 1960-10-10 1964-03-31 Noguera
US3237249A (en) * 1963-12-05 1966-03-01 Maremont Corp Hollow air cleaning rolls
US3387318A (en) * 1964-05-04 1968-06-11 Pneumafil Corp Blow cleaning
US3346926A (en) * 1965-01-05 1967-10-17 Andreani Eugenio Textile apron stabilizing and cleaning system for drafting units

Cited By (7)

* 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
US4519199A (en) * 1981-05-15 1985-05-28 Spindelfabrik Sussen, Schurr, Stahlecker & Grill Gmbh Device for interrupting the feed of a roving to the drawing frames of a spinning machine
US4642852A (en) * 1984-06-14 1987-02-17 National Research Development Corporation Dust extractor for drawframe
US4662167A (en) * 1985-03-15 1987-05-05 Hans Stahlecker Spinning machine maintenance unit with fly catching needle
US4897202A (en) * 1988-01-25 1990-01-30 Pure-Chem Products, Inc. Process and apparatus for recovery and recycling conveyor lubricants
US4897203A (en) * 1988-02-26 1990-01-30 Pure-Chem Products, Inc. Process and apparatus for recovery and recycling conveyor lubricants
US4985967A (en) * 1989-03-10 1991-01-22 Fritz Stahlecker Drafting unit for a spinning machine with movable cover

Also Published As

Publication number Publication date
DE2339880A1 (de) 1974-02-21
GB1432477A (en) 1976-04-14
FR2195714B1 (cs) 1977-08-05
CH569099A5 (cs) 1975-11-14
FR2195714A1 (cs) 1974-03-08
ES417601A1 (es) 1976-06-01
IT963897B (it) 1974-01-21

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