US3006037A - Resilient top roll and nippers for drawing frames of spinning machines - Google Patents

Resilient top roll and nippers for drawing frames of spinning machines Download PDF

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Publication number
US3006037A
US3006037A US729604A US72960458A US3006037A US 3006037 A US3006037 A US 3006037A US 729604 A US729604 A US 729604A US 72960458 A US72960458 A US 72960458A US 3006037 A US3006037 A US 3006037A
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United States
Prior art keywords
roll
sleeve
resilient
rolls
collars
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Expired - Lifetime
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US729604A
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English (en)
Inventor
Bettolo Aroldo Roberto
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MEC SANT ANDREA NOVARA SpA OFF
S P A OFFICINA MECCANICA SANT'ANDREA NOVARA
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MEC SANT ANDREA NOVARA SpA OFF
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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
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H2700/00—Spinning or twisting machines; Drafting devices
    • D01H2700/245—Conception or fabrication of drafting cylinders

Definitions

  • top rolls with a resilient covering, i.e. a cylindrical skirt of relatively large thickness and elasticity. Since the guiding of the fibres, particularly the lateral fibres, of a sliver was found to be insufficient, clearances were left within the relatively thick skirts or resilient material, of a form such as to remain unaltered under the action of weighting in respect of form and size in an axial direction.
  • a resilient intermediate body provided with a leather or rubber coating was secured to the roll core.
  • This intermediate resilent body could comprise, according to this further proposal, a circular brush of thin wire or a brush fitted with animal or vegetable bristles.
  • a resilient sleeve of cylindrical shape is fitted on the roll core which is provided with lateral rings.
  • the sleeve bears on the rings, leaving a clearance between the roll core and sleeve.
  • weighting does not alter the form of the sleeve.
  • the resilient nipping is but small and almost always insufficient. Moreover, the nipping pressure is heavier in the middle than at the sides of a sliver being passed through the nip.
  • a textile fibre drafting roll comprising a core having a pair of rings or ribs provided around, and axially spaced from one another along, the core, and a sleeve of resilient material mounted "around the core.
  • the sleeve has a part extending over the rings, the inner diameter of this part is larger than the outer diameter of the rings or ribs, so as to be normally out of contact with the periphery of the rings or ribs.
  • the sleeve is such that, when the roll is brought into rolling contact with a counter-pressure device for the pressing therebetween of a sliver of textile fibres, the rings or ribs are able to engage the sleeve in the area of contact and the portion of the sleeve interjacent the rings or ribs is able to cooperate with the counter-pressure device in the rolling and pressing of the sliver.
  • FIGURE 1 is an elevation view illustrating a resilient top roll associated with a fluted bottom cylinder, a part of the top roll being shown in section,
  • FIGURE la is a cross-sectional View of FIGURE 1,
  • FIGURE 1b is a similar view to FIGURE 1, the arrangement comprising atop roll of modified construction,
  • FIGURE 2 is a similar view to FIGURE 1, the arrangement comprising a modified cooperating bottom roll device with an elastic belt.
  • FIGURE 2a is a cross-sectional view of FIGURE 2
  • FIGURE 3 is a similar view to FIGURE 1, the arrangement comprising a further modified bottom roll, similar to the top roll,
  • FIGURE 3a is a cross-sectional view of FIGURE 3,
  • FIGURE 4 is a view similar to FIGURE 1, the arrangement comprising a still further modified cooperating bottom roll device, and
  • FIGURE 4a is a cross-sectional view of FIGURE 4.
  • the top roll comprises a core 1 provided with lateral rings or collars 2 and 2.
  • a cylindrical sleeve 3 made of resilient material, as for example, oil-proof synthetic rubber, is fitted on the core, the inner diameter of the sleeve being larger than the outer diameter of the collars.
  • the end portions of the sleeve 3 are inturned 4 and 4' and rest at their ends against the outside of the collars 2 and 2'. The sleeve 3 thus envelops the collars.
  • the thickness of the sliver causes the middle portion of the sleeve interjacent the collars 2 and 2' to yield farther radially inwardly towards the core 2 while the rings pinch the adjacent portions of the sleeve against the bottom roll 6.
  • the pinching action of the collars thus prevents parts of the sleeve being drawn axially past the collarstowards thecenter by the tension induced'inthe middle portion of the sleeve bythe sliver f.
  • the yielding movement of the middle portion of the sleeve towards the core is therefore dependent on the ability of the sleeve material to stretch.
  • the nipping pressure exerted by the middle portion ofv the sleeve can also, therefore, be predetermined and is chiefly dependent on the hardness, resiliency, and diameter of the sleeve.
  • the pressure exerted on the sliver by the middle portion which. in efiect constitutes the working width of the top roller, is further uniform between the rolls.
  • the middle portion of the sleeve yields in accordance with the curvature of the bottom rollso as-partly to encircle the latter over the arc a-b.
  • the yielding of the middle portion of the sleeve towards the axis of the core being of course greatest where the sleeve'intersects the planecontaining the axes of the top and bottom rolls.
  • The-nip betweenthe top and'bottom rolls istherefore constituted by a curved area, which affords amore efiicient guide for the fibres of the sliver f therebyincreasing the drawing efficiencyof the-drawing mechanism.
  • Uniformity of nipping pressure throughout theoperative width of thenip can be easily ascertained andmeasured by the resistance opposed to a thin thread or athin strip in various parts of the nip during drawing.
  • the lateral fibres of a sliver are guided in a particularly efiicient manner through the illustrated device.
  • annuli 7 and 7' made of the same material as the sleeve or made of soft resilient material, for example sponge rubber, or consist ing-of resilient tubular rings.
  • the annuli 7 -and-7 may either be. firmly secured-to-the sleeve or may consist of movable rings. In the latter case, it is; desirable to secure them against axial displacement;
  • FIGURES 1 and 1a and the arrangementshown in FIGURE 1b, which arrangements have'a plain bottom roller or shaft, will-be sufficient.
  • the top roll is similar to the top roll of FIGURE 1.
  • the bottom roll 6, however, is formed with a portion 6' of reduced diameter beneath the middle portion of the sleeve 3, which reduced portion serves to accommodate and guide a belt 8-made of soft and resilient material such as sponge'rubber or the like.
  • the outer surface of the belt may be covered with a thin s ip of rubber, leather or the like.
  • the radial walls of the portion 6' also serve to improve the guiding and control'of the fibres of a sliver passed through the nip.-
  • the bottom roll 6" has lateral rings 2" and a resilient. sleeve having inturned end portions so thatv the top and bottom rolls have similar construction, features. This arrangement considerably enlarges the nipping surface (see FIGURE 3a) as compared with the nipping surface of: either FIGURE 1a or FIG- URE 2a.
  • the-bottom roll may, have construction, featuressimilar. to those of the top roll shown in FIGURE 1b.
  • FIGURES 4 and 4a illustrate a further alternative arrangementcomprising a top rollof similar construction to the top roll of FIGURE 1.
  • the top roll 1 co-operates with a counter-pressure device comprising a bottom roll 6, a belt reversing or guide bar 10 located forwardly of the roll 6 in the direction of movement of the sliver, and a belt 9 adapted to travel over the roll 6 and the bar 10.
  • the top roll 1 is arranged to bear principally on the belt 9 between the roll 6 and the bar 19 thereby obtaining greater resilience.
  • Such an arrangement affords a particularly large nipping surface as shown in FIGURE 4a.
  • This arrangement moreover advantageously reduces the nip space between the draft rolls and control rolls.
  • a pair of elongated members at least one of which comprises a roll said members having in operation relatively moving peripheral surfaces. c0- operative in forming in operation a drafting zone between them, said members being disposed parallel and radially disposed relative to one another, said roll having a core provided with axially spaced collars fixed thereon for rotation therewith, a resilient sleeve disposed extending axially over said core for rotation with saidroll with opposite ends disposed axially outwardly of the collars, said sleeve having an inner diameter greater than the diameter of said collars and portions thereof radially adjacent said collars radially spaced from said collars, and in operation said collars'being disposed relative the other of said elongated members in position for bearing on corresponding portions of the sleeveradially adjacent thereof and causing said portions to bear on said other member thereby defining the width of the drafting zone along an axial length of the members intermediate
  • a drafting apparatus for drafting sliver and the like in combination, a pair of elongated members at least one of which comprises a roll, said members having in operation relatively moving peripheral surfaces cooperativein forming in operation a drafting zone between 1' them, said members being disposed parallel and radially disposed relative to one another, said roll having a core provided with axially spaced collars fixed thereon for I ing on corresponding portions of the sleeve radially adjacent thereof and causing said portions to bear on said other member thereby defining the width of the drafting zone along an axiallength of'the members intermediate the collars, and a traveling belt traveling over said other member between it and said roll along the zone intermediate thecollars of said roll.
  • a pair of rolls having in operation relatively moving peripheral, surfaces cooperative in forming in operation a drafting zone between them, said rolls being disposed parallel and radially disposed relative to one another, one of said rolls having a core provided with axially spaced collars fixed thereon for rotation therewith, a resilient sleeve disposed extending axially over said-core with opposite ends disposed axially outwardly of the collars, said sleeve having an inner diameter greater than the diameter of said collars and portions thereof radially adjacent said collars radially spaced from said collars, and in operation said collars being disposed relative the other of said rolls in position for bearing on corresponding portions of the sleeve radial-1y adjacent thereof and causing said portions to bear on said other roll thereby defining the Width of the drafting zone along an axial length of the members intermediate the collars.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US729604A 1957-04-29 1958-04-21 Resilient top roll and nippers for drawing frames of spinning machines Expired - Lifetime US3006037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT830324X 1957-04-29

Publications (1)

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US3006037A true US3006037A (en) 1961-10-31

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ID=11319686

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US729604A Expired - Lifetime US3006037A (en) 1957-04-29 1958-04-21 Resilient top roll and nippers for drawing frames of spinning machines

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US (1) US3006037A (US06291589-20010918-C00001.png)
BE (1) BE566801A (US06291589-20010918-C00001.png)
DE (1) DE1094641B (US06291589-20010918-C00001.png)
FR (1) FR1205917A (US06291589-20010918-C00001.png)
GB (1) GB830324A (US06291589-20010918-C00001.png)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078519A (en) * 1959-10-08 1963-02-26 Pirelli Elastic draft pressure roller for spinning machines
EP0016267A1 (en) * 1979-03-15 1980-10-01 Keiichiro Yoshida Material tensioning method and apparatus
US4470253A (en) * 1980-06-09 1984-09-11 Firma Zinser Textilmaschinen Gmbh Spinning frame, preferably ring spinning frame
US4489461A (en) * 1981-10-24 1984-12-25 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method and apparatus for textile fiber drafting
US5038553A (en) * 1988-09-29 1991-08-13 Rieter Machine Works, Ltd. Drafting arrangement for false twist spinning
US20080220702A1 (en) * 2006-07-03 2008-09-11 Sang Fang Chemical Industry Co., Ltd. Polishing pad having surface texture

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2465804A1 (fr) * 1979-09-18 1981-03-27 Tashk Sp Konstru Rouleau de pression du mecanisme d'etirage de machines textiles
DE2937726C2 (de) * 1979-09-18 1984-09-27 Taškentskoe special'noe konstruktorskoe bjuro tekstil'nych mašin, Taškent Druckwalze für Streckwerke von Textilmaschinen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1809252A (en) * 1928-05-29 1931-06-09 Pflimlin Jules Drawing device for spinning frames and for preparatory machinery
US1809251A (en) * 1930-01-06 1931-06-09 Pflimlin Jules Drawing device for spinning frames and for preparing machinery
GB395378A (en) * 1931-01-30 1933-07-10 Santiago Casaramona Salvat Improvements in drawing rollers for preparing, spinning and like textile machines
GB454619A (en) * 1935-03-29 1936-10-05 Ver Kugellagerfabriken Ag Improvements in top rollers of drawing or drafting apparatus of spinning machines, drawing frames and the like
FR1079910A (fr) * 1952-03-31 1954-12-03 Sampre Manchon élastique susceptible d'être appliqué ou fixé comme revêtement des rouleaux de pression sur les cylindres d'étirage et d'accompagnement sur les trains d'étirage des métiers à filer
GB729975A (en) * 1953-04-27 1955-05-11 Sampre S A Meccanica Prec E Improvements in or relating to rollers for use on textile spinning machines

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE394904C (de) * 1922-01-25 1924-05-10 James Edward Lees Druckwalze fuer Durchzugsstreckwerke
DE494184C (de) * 1928-06-12 1930-03-19 Julius Pflimlin Belastete Druckwalze fuer Streckwerke von Spinnereimaschinen
CH143886A (de) * 1929-11-28 1930-11-30 Pflimlin Jules Einrichtung an Zylinderstreckwerken von Spinnereimaschinen zur Erzielung von grossem Verzug.
DE543406C (de) * 1929-12-02 1932-02-05 Wladimir Andrejewitsch Judin Durchzugsstreckwerk fuer Spinnmaschinen
CH161019A (fr) * 1931-01-30 1933-04-15 Salvat Santiago Casaramona Cylindre de filature pour mécanismes de conduite, rétention et étirage des mèches et rubans textiles.
DE738597C (de) * 1940-09-24 1943-08-21 Hermann Kluftinger Dipl Ing Oberwalze fuer Riemchenstreckwerke

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1809252A (en) * 1928-05-29 1931-06-09 Pflimlin Jules Drawing device for spinning frames and for preparatory machinery
US1809251A (en) * 1930-01-06 1931-06-09 Pflimlin Jules Drawing device for spinning frames and for preparing machinery
GB395378A (en) * 1931-01-30 1933-07-10 Santiago Casaramona Salvat Improvements in drawing rollers for preparing, spinning and like textile machines
GB454619A (en) * 1935-03-29 1936-10-05 Ver Kugellagerfabriken Ag Improvements in top rollers of drawing or drafting apparatus of spinning machines, drawing frames and the like
FR1079910A (fr) * 1952-03-31 1954-12-03 Sampre Manchon élastique susceptible d'être appliqué ou fixé comme revêtement des rouleaux de pression sur les cylindres d'étirage et d'accompagnement sur les trains d'étirage des métiers à filer
GB729975A (en) * 1953-04-27 1955-05-11 Sampre S A Meccanica Prec E Improvements in or relating to rollers for use on textile spinning machines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3078519A (en) * 1959-10-08 1963-02-26 Pirelli Elastic draft pressure roller for spinning machines
EP0016267A1 (en) * 1979-03-15 1980-10-01 Keiichiro Yoshida Material tensioning method and apparatus
US4470253A (en) * 1980-06-09 1984-09-11 Firma Zinser Textilmaschinen Gmbh Spinning frame, preferably ring spinning frame
US4489461A (en) * 1981-10-24 1984-12-25 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method and apparatus for textile fiber drafting
US5038553A (en) * 1988-09-29 1991-08-13 Rieter Machine Works, Ltd. Drafting arrangement for false twist spinning
US20080220702A1 (en) * 2006-07-03 2008-09-11 Sang Fang Chemical Industry Co., Ltd. Polishing pad having surface texture

Also Published As

Publication number Publication date
FR1205917A (fr) 1960-02-05
BE566801A (US06291589-20010918-C00001.png)
GB830324A (en) 1960-03-16
DE1094641B (de) 1960-12-08

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