US3636591A - Drafting device for textile machines - Google Patents

Drafting device for textile machines Download PDF

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Publication number
US3636591A
US3636591A US874136A US3636591DA US3636591A US 3636591 A US3636591 A US 3636591A US 874136 A US874136 A US 874136A US 3636591D A US3636591D A US 3636591DA US 3636591 A US3636591 A US 3636591A
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United States
Prior art keywords
bars
flexible
cylinders
field
lips
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Expired - Lifetime
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US874136A
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English (en)
Inventor
Jean Frederic Herubel
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N Schlumberger SAS
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N Schlumberger SAS
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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
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons
    • 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
    • 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
    • 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
    • D01H5/20—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by contact with stationary or reciprocating surfaces

Definitions

  • ABSTRACT The present invention relates to a drafting machine for the preparation and spinning of natural or manmade textile fibers and more particularly to the devices for controlling said fibers.
  • a device comprises, between feed cylinders and drafting cylinders, two fields of control elements movable in the sense of forward movement of the fibrous material to be drafted between the two fields.
  • a least one of said fields is constituted by bars with flexible lips each formed from a transverse strip of material presenting a degree of flexibility such as rubber, leather or an elastomer folded back on itself in the form of a loop called upon to exert a degree of pressure against the said fibrous material.
  • the present invention relates to high-draft drafting systems for the preparation and spinning of natural or manmade textile fibers.
  • Every preparing or spinning machine for textile fibers comprises a device serving to arrange the fibers parallel to each other and to draw the slivers or rovings.
  • a device is composed of feed cylinders, a control device, and drafting rollers.
  • the present invention concerns more particularly the device for controlling the fibers.
  • the many drafting devices used up to the present for drawing slivers or rovings comprise varied control parts, such as single or double fields or pinned bars or fallers, porcupine rolls, rollers with elastic covering, multiple and idler rollers, double or apron units and so on.
  • Some devices use a combination of several of these means.
  • the porcupine roll constitutes a field of needles over a very small active area which considerably diminishes the control of the treated fibers.
  • the object of the invention is to provide a drafting device which does not present the disadvantages listed above in the known devices.
  • a device comprises, between feed cylinders and drafting cylinders, two fields of control elements movable in the sense of forward movement of the fibrous material to be drafted which must pass between the two fields, one of these at least being constituted by bars with flexible lips each formed from a transverse strip of a material presenting a degree of flexibility such as rubber, leather, or an elastomer, folded back on itself in the form of a loop which is called upon to exert a degree of pressure against the fibrous material.
  • Such a device according to the invention presents a whole series of advantages, notably:
  • the bar with a flexible member having a very good holding-back action, while being very supple, permits, on one part, drafting effects and on the other part, feeding charges greater than those of the usual devices.
  • the bar with a flexible lip not having pins, the problem of the entry and leaving of pins from the material does not arise. What is more, the bar with a flexible lip can present the flexible lip in any position, the holding back and control of the fibers being always accomplished without producing irregularities in the sliver or roving.
  • the range of the materials which can be treated is no longer limited, the path and inclination of the field of lips being able to be chosen in the most favorable manner.
  • the other field of control elements is constituted by an endless apron passing against a table and over two terminal cylinders, whereas, in another embodiment, the other field of control elements is constituted also by bars with flexible lips of the same kind.
  • FIG. 1 is a schematic side view of a first embodiment of a drafting device according to the invention
  • FIG. 2 is an enlarged view of a bar with a flexible lip from the device of FIG. 1;
  • FIG. 3 is a side view of the bar of FIG. 2;
  • FIGS. 4, 5 and 6 shows various forms of bars with flexible lips
  • FIG. 7 is a schematic side view of the arrangement of two fields of control elements formed of bars with flexible lips;
  • FIGS. 8 to 12 show varied forms of the device of FIG. 7;
  • FIG. 13 is a side view of another drafting device according to the invention, in which the flexible lips are carried by bars similar to intersection bars;
  • FIG. 14 shows another embodiment in which the flexible lips are mounted inside a drafting apron
  • FIG. 15 shows a further embodiment in which the flexible lips are carried by an endless apron
  • FIG. 15A shows yet another embodiment in which the flexible lips are positioned both above and below the fibrous material
  • FIG. 16 shows a modification of the embodiment in FIG. 15
  • FIG. 17 shows yet another embodiment in which the flexible lips are mounted in a support which is vertically movable inside an endless apron
  • FIGS. l8, l9 and 20 show schematically possible arrangements of fields of fiber control elements, in a drafting device according to the invention.
  • FIGS. 21 and 22 represent embodiments similar to the preceding figures including a porcupine roller on the inlet and outlet sides of the machine respectively.
  • the drafting device for the preparation and spinning of natural or manmade textile fibers shown in FIG. 1 comprises between feed cylinders l and 2, and drafting cylinders 3, 4 and 5, a fiber control device designated as a whole by 7, and comprising two fields 8, 9 of fiber control elements which are movable in the direction f in which the fibrous material 10 passes between the two fields.
  • At least one of the two fields of fiber control elements in this example the upper field is constituted by bars with flexible lips, 13 the structure of which can for example be seen in FIGS. 2 and 3.
  • the lower field of control elements 9 is constituted in this example, by a belt or apron formed from canvas, or a notched endless belt which passes over a table 14 and two terminal cylinders 15, 16.
  • Such flexible lip 13 is constituted in this example by a transverse strip of a material possessing a desired degree of resilience, such as rubber, leather, or an elastomer, folded on itself to form a loop, the back of which is called on to exert pressure on the fibrous material 10.
  • a transverse strip of a material possessing a desired degree of resilience such as rubber, leather, or an elastomer
  • the two marginal portions of the folded strip are secured against a rigid support 18, by example by means of a plate 19 and bolts shown simply by their axes 21.
  • FIG. 3 there are shown by arrows A, B, C, D, E, F, and G, the values of the pressure exerted by the flexible lip 13 on the fibrous material 10 as a function of the location of the point considered across the width of the fibrous material.
  • the pressure indicated by arrow G is also the greatest, whereas on the edges where the thickness of the fibrous material is weak, the pressure indicated by arrows such as A, B is much weaker.
  • FIG. 2 there is indicated in broken lines, the configuration of the bar with flexible lip towards the middle of its length, that is at the place of greatest thickness of the fibrous material 10.
  • FIG. 4 shows a modification in the form of the flexible lip directed downstream of the fiber feed instead of directed upstream like that in FIG. 2.
  • FIGS. 5 and 6 show forms of bars in which the flexible lip 23 or 24 is symmetrical with reference to a theoretical geometric plane situated between the two faces of the strip fixed to the support 18.
  • the two marginal portions of the strip are secured to the support 18 one against the other. Whereas in FIG. 6 they are secured to the opposite sides of the support, so that the lip is wider.
  • FIG. 7 there is schematically shown a modification of the main part of the fiber control system illustrated in FIG. 1 in which the lower field of control elements is also constituted by bars with flexible lips 25 similar to those 13 of the upper field.
  • the lower bars with flexible lips 25 can be placed exactly opposite the upper bars with flexible lips 13 as shown in FIG; 7 or else with a slight shift as shown in FIG. 10.
  • the bars with flexible lips have been represented directed rearwardly or upstream but they can also by way of modification be directed forwardly or downstream, either in perfect coincidence as shown in FIG. 9 or with slight shift as shown in FIG. 12.
  • the flexible lips can also present a symmetrical form with reference to a theoretical geometric plane, situated midway between the two sidewalls of the strip as shown in FIGS. 8 and 11 which show respectively, the bar in coincidence and shifted.
  • the body 18 of the plate can be inclined during its working phase.
  • FIG. 13 there is shown another embodiment in which the flexible lips 13 are carried by bars 31 mounted in a mechanism designated as a whole by 32, of the intersecting bar kind which bars are displaced in a rectilinear direction along the fibrous material and which return to their starting point through a path located above their working path.
  • the other elements in the device are similar to those shown in FIG. 1 and are designated by the same reference numerals. Their operation is the same.
  • the upper field of control elements is again constituted by flexible lips 13, secured to bars 18 carried on an endless belt 41 mounted on two terminal rollers 42, 43, at least one of which is driven to assure movement of the lips 13.
  • the ensemble of these lips is mounted inside an endless belt 45 which passes around cylinders 46, 47, 48 driven at the same speed as that of the lips 13.
  • the fibrous material 10 is thus submitted to the pressure of the lips 13 through the intermediary of the belt 45.
  • the other elements are the same as shown in FIG. 1.
  • the lower field of control elements is the same as in FIG. 14, but the lips 13 of the upper field, which are again carried by bars 18 mounted on an endless belt 41, are in direct contact with the fibrous material 10, the belt 41 being carried by two cylinders 51, 52 at least one of which is driven at the desired speed.
  • the lower belt 41A carried by the cylinders 15 and 16 also carries bars 18 with lips 13 which form the lower field of fiber-controlling elements adapted to exert a pressure against the fiber material 10 in conjunction with the lips 13 of the upper field.
  • belts 41 and 41A are notched belts capable of being moved in perfect synchronism.
  • the device shown in FIG. 16 is only differentiated from that shown in FIG. 15 by the fact that the table 14 is raised relative to the downstream terminal cylinder 16, so that the drawing device presents a path with a plunging part as shown by 55, which permits control, not only of long fibers but also of short fibers, and consequently, improvement to a great extent of the regularity of the sliver or roving of emerging fibers.
  • FIG. 16 there is shown, also, a fixed guide 57 against which the internal face of the flexible lip supporting belt 41 is backed, facing the table 14 against which passes the lower belt 9.
  • FIG. 17 there is shown a modification of the embodiment of FIG. 14 from which it differs in that the flexible lips 13 are not subject to a translational movement, but are carried by bars 18 secured to a vertically movable support 61 inside of endless belt 45 was to be able to exert a variable pressure against the inner face of the said belt 45 and, in consequence, on the sliver or roving of fibers 10.
  • the support 61 is pivotally mounted on a horizontal shaft 62. There can further by provided means for regulating the pressure exerted by the lips 13 against the belt.
  • the path of the upper fiber control elements, and the path of the lower fiber control elements can be, perhaps parallel as in the embodiments illustrated or perhaps convergent in a first part as shown by 71 in FIG. 18, then parallel in a second part 72 or even convergent in a first part 71, as shown in FIG. 19 and divergent in a second part 73 or else first convergent as shown by 71 in FIG. 20, then parallel in a second part 72 and finally divergent in a third part 73.
  • the control system according to the invention designated as a whole by 7, is preceded and/or followed by a single or double porcupine roller as shown by 75, 76, respectively.
  • the porcupine roller can also be replaced for example by gill boxes or intersecting combs, or by drafting devices with double or single apron, or else by drafting devices with barrel rollers.
  • the speed of advance of the lower field of fiber control elements can be the same as the speed of the elements of the upper field, but it can also be slightly different therefrom, which can remedy insufficient pressure to hold back the fibers, notably for poor feeding charges.
  • the driving of the bars with resilient lips can be carried out by a screw, e.g., similar to an intersecting bar screw, by a notched belt, by a chain, or by any other appropriate means.
  • a device for drafting a fibrous material comprising feed cylinders, drafting cylinders, two fields of fiber controlling elements arranged between said feed and drafting cylinders and movable in the direction of movement of said fibrous material, at least one of said fields of fiber controlling elements being constituted by bars and flexible lips carried by said bars, said lips each being formed of a transverse thin strip of material presenting a degree of flexibility folded back on itself to form a loop called on to exert a pressure against the fibrous material.
  • a device further comprising two terminal cylinders, a table between said two terminal cylinders, and wherein said other field of fiber control elements is constituted by an endless belt passing over said table and said two terminal cylinders.
  • a device wherein the other field of fiber control elements is also constituted by bars with similar flexible lips.
  • each of said flexible lip carrying bars is made of a rigid material.
  • each of said bars has a strip-carrying face, said flexible strip having two marginal portions and said two marginal portions of said flexible strip being secured to said face of said bar.
  • each of said bars has two opposite strip-carrying faces, said flexible strip having two marginal portions and said two marginal portions of said flexible strip being secured respectively to said two opposite faces of said bar.
  • each bar of one of said two fields is located opposite a bar of the other field.
  • each bar of one of said two fields is shifted with reference to a bar of the other field in their direction of motion.
  • one of said two fields of fiber control elements comprises an endless belt, said flexible lip-carrying bars being arranged inside said endless belt, said lips being in contact with one run of said belt in an active area of said field.
  • a device wherein said flexible lipcarrying bars are carried on a support, said support being movable perpendicularly to the general plane of said lips on a zone where they cooperate with the other field of fiber controlling elements.
  • said field of fiber-controlling element further comprises two end cylinders, an endless belt passing over said two end cylinders, said field of flexible lip carrying bars being carried by said endless belt.
  • a device wherein said table is raised with reference to the end cylinder which carries the downstream end of the endless belt passing over said table.
  • a device wherein a support means is provided on which said field of flexible lip carrying bars is mounted for displacing said lip-carrying bars in a working path in the direction of movement of the fiber material and for returning said flexible lip-carrying bars through a path located above the working path.

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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)
US874136A 1968-11-28 1969-11-05 Drafting device for textile machines Expired - Lifetime US3636591A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR175735 1968-11-28

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US (1) US3636591A (el)
BE (1) BE740012A (el)
CH (1) CH523977A (el)
DE (1) DE1956829C3 (el)
ES (1) ES373974A1 (el)
FR (1) FR1593755A (el)
GB (1) GB1232919A (el)
NL (1) NL6917829A (el)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070732A (en) * 1974-07-16 1978-01-31 Schlumberger & Cie Textile fibre control system in a drawing device
US4107821A (en) * 1975-10-28 1978-08-22 N. Schlumberger & Cie Drawing device for sliver
US4193170A (en) * 1975-10-28 1980-03-18 N. Schlumberger & Cie Drawing device for sliver
DE3117301A1 (de) * 1980-04-30 1982-02-11 Murata Kikai K.K., Kyoto Verfahren und vorrichtung zum uebertragen der antriebskraft in einer verzugseinrichtung einer spinnmaschine
US4615170A (en) * 1984-08-29 1986-10-07 Interaction Devices for producing a continuous thread from a roving composed of parallel short fibers
US4727626A (en) * 1984-12-14 1988-03-01 Platt Saco Lowell S.A. Control of fibers in apron drafting systems of machinery used in the spinning process
JP2007508472A (ja) * 2003-10-17 2007-04-05 インスティトゥート、フュール、テクスティール−、ウント、フェルファーレンステヒニク、デンケンドルフ、デァ、ドイチェン、インスティトゥーテ、フュール、テクスティール−、ウント、ファーザーフォルシュング エプロンによって包囲された送出しトップローラ対を有する牽伸装置
WO2014018645A1 (en) 2012-07-25 2014-01-30 R. J. Reynolds Tobacco Company Mixed fiber sliver for use in the manufacture of cigarette filter elements
WO2015008125A1 (de) * 2013-07-16 2015-01-22 Maschinenfabrik Rieter Ag Streckwerk mit faserführungselement
EP2980286A1 (de) * 2014-08-01 2016-02-03 Deutsche Institute für Textil- und Faserforschung Denkendorf Walzenstreckanordnung einer arbeitsstelle einer stapelfaserverarbeitenden textilmaschine sowie damit ausgestattete textilmaschine
US10524500B2 (en) 2016-06-10 2020-01-07 R.J. Reynolds Tobacco Company Staple fiber blend for use in the manufacture of cigarette filter elements

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523159A1 (fr) * 1982-03-12 1983-09-16 Richard Schutz Procede d'affinage d'un ensemble de fibres textiles en nappe, en ruban, en meche, par cisaillement : etirage de haute performance
BG41936A1 (en) * 1985-05-07 1987-09-15 Bakhov Apparatus for drawing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175107A (en) * 1937-12-06 1939-10-03 Casablancas High Draft Co Ltd Mechanism for drawing textile rovings
GB826902A (el) * 1957-05-10 1960-01-27 Schiess Ag
GB964957A (el) * 1962-06-28 1964-07-29

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2175107A (en) * 1937-12-06 1939-10-03 Casablancas High Draft Co Ltd Mechanism for drawing textile rovings
GB826902A (el) * 1957-05-10 1960-01-27 Schiess Ag
GB964957A (el) * 1962-06-28 1964-07-29

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4070732A (en) * 1974-07-16 1978-01-31 Schlumberger & Cie Textile fibre control system in a drawing device
US4107821A (en) * 1975-10-28 1978-08-22 N. Schlumberger & Cie Drawing device for sliver
US4193170A (en) * 1975-10-28 1980-03-18 N. Schlumberger & Cie Drawing device for sliver
DE3117301A1 (de) * 1980-04-30 1982-02-11 Murata Kikai K.K., Kyoto Verfahren und vorrichtung zum uebertragen der antriebskraft in einer verzugseinrichtung einer spinnmaschine
US4615170A (en) * 1984-08-29 1986-10-07 Interaction Devices for producing a continuous thread from a roving composed of parallel short fibers
US4727626A (en) * 1984-12-14 1988-03-01 Platt Saco Lowell S.A. Control of fibers in apron drafting systems of machinery used in the spinning process
JP2007508472A (ja) * 2003-10-17 2007-04-05 インスティトゥート、フュール、テクスティール−、ウント、フェルファーレンステヒニク、デンケンドルフ、デァ、ドイチェン、インスティトゥーテ、フュール、テクスティール−、ウント、ファーザーフォルシュング エプロンによって包囲された送出しトップローラ対を有する牽伸装置
JP4639193B2 (ja) * 2003-10-17 2011-02-23 ドイッツチェ、インスティトゥーテ、フュール、テクスティール−、ウント、ファーザーフォルシュング、シュトゥットガルト ベルトによって包囲されたツイン式トップフロントローラを有する牽伸装置
WO2014018645A1 (en) 2012-07-25 2014-01-30 R. J. Reynolds Tobacco Company Mixed fiber sliver for use in the manufacture of cigarette filter elements
US9179709B2 (en) 2012-07-25 2015-11-10 R. J. Reynolds Tobacco Company Mixed fiber sliver for use in the manufacture of cigarette filter elements
US9833017B2 (en) 2012-07-25 2017-12-05 R.J. Reynolds Tobacco Company Mixed fiber sliver for use in the manufacture of cigarette filter elements
WO2015008125A1 (de) * 2013-07-16 2015-01-22 Maschinenfabrik Rieter Ag Streckwerk mit faserführungselement
CN105358749A (zh) * 2013-07-16 2016-02-24 里特机械公司 具有纤维引导元件的牵伸单元
EP2980286A1 (de) * 2014-08-01 2016-02-03 Deutsche Institute für Textil- und Faserforschung Denkendorf Walzenstreckanordnung einer arbeitsstelle einer stapelfaserverarbeitenden textilmaschine sowie damit ausgestattete textilmaschine
CN105316815A (zh) * 2014-08-01 2016-02-10 邓肯多夫德国纺织及纤维研究所 加工短纤维的纺织机工位的罗拉牵伸组件及纺织机
CN105316815B (zh) * 2014-08-01 2019-03-29 邓肯多夫德国纺织及纤维研究所 加工短纤维的纺织机工位的罗拉牵伸组件及纺织机
US10524500B2 (en) 2016-06-10 2020-01-07 R.J. Reynolds Tobacco Company Staple fiber blend for use in the manufacture of cigarette filter elements

Also Published As

Publication number Publication date
DE1956829A1 (de) 1970-10-08
CH523977A (fr) 1972-06-15
GB1232919A (el) 1971-05-26
NL6917829A (el) 1970-06-01
FR1593755A (el) 1970-06-01
DE1956829C3 (de) 1973-07-12
BE740012A (el) 1970-04-09
ES373974A1 (es) 1972-03-16
DE1956829B2 (de) 1972-12-14

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