US2780840A - Roller arrangement for drafting systems of spinning machines - Google Patents

Roller arrangement for drafting systems of spinning machines Download PDF

Info

Publication number
US2780840A
US2780840A US2780840DA US2780840A US 2780840 A US2780840 A US 2780840A US 2780840D A US2780840D A US 2780840DA US 2780840 A US2780840 A US 2780840A
Authority
US
United States
Prior art keywords
roller
rollers
delivery
supporting
drafting
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
Other languages
English (en)
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 filed Critical
Application granted granted Critical
Publication of US2780840A publication Critical patent/US2780840A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons

Definitions

  • the present invention relates to spinning machines and, more particularly, to roller arrangements for drafting systems of spinning machines, especially speed frames and spinning frames.
  • the fiber material is grasped by guiding and retaining members which move in the direction of movement of the sliver and are located between feed rollers and delivery rollers.
  • the said sliver is pulled out from said guiding and retaining members by the front delivery roller.
  • the said guiding and retaining members have the purpose of preventing accidental movement of the bers, particularly those fibers which are neither grasped by the feeding nor the delivery rollers, because such accidental movements affect the uniformity of the liber material during the drafting operation.
  • Still another object of the invention consists in the provision of a roller assembly, particularly for use in connection with spinning machines, especially drafting systems, which, while allowing the employment of return rollers for the drafting apron or aprons adjacent the delivery roller, will materially reduce the distance between the clamping line of such apron or aprons and the clamping line between the delivering rollers.
  • Figure l illustrates a two apron drafting system of the heretofore customary type.
  • Figure 2 diagrammatically illustrates a rst embodiment of the invention.
  • Figure 2a is a longitudinal section through the arrangement of Figure 2.
  • Ptent Figure 3 represents another embodiment of the invention and illustrates the same in longitudinal section.
  • Figure 4 is across section through the arrangement of Figure 3.
  • Figure S is a perspective view of still another arrangement according to the invention.
  • Figure 6 represents a perspective view of a still further embodiment of the invention.
  • Figure 7 illustrates a front view of an arrangement according to the invention showing how it is journalled in the machine.
  • Figure 8 is a front View of an arrangement according to the invention and shows the same as an independent unit.
  • Figure 9 represents a side view of an arrangement according to the invention as used in connection with the front delivery roller of a drafting system.
  • Figure 10 shows the invention as used in connection with the front pressure roller of a drafting system.
  • Figure l1 illustrates an embodiment of the invention somewhat modified over the arrangement shown in Figure l0.
  • Figure 12 illustrates a drafting system in which the delivery as well as the conveying elements are designed according to the present invention.
  • Figure 13 diagrammatically illustrates a side view of a specific embodiment of the invention using the principle of Figure l2.
  • the invention is characterized primarily by the combination of at least two rollers which contact each other and of which one roller only, namely, the roller with the smaller diameter, grasps the liber material, whereas the other roller having a larger diameter serves as supporting element for the first-mentioned roller of smaller diameter.
  • the larger roller may simultaneously serve as driving and/or clearer roller for the smaller roller.
  • an odd number of rollers with decreasing diameter are arranged preferably one behind the other in one plane and have looped around them an endless belt in such a manner that only the rollers of the largest and smallest diameters are contacted by the belt.
  • the guiding and supporting rollers may be journalled in bearing parts common thereto. Intermediate bearing parts may be maintained properly spaced from the lateral bearing means by tube-shaped roller elements.
  • the bearing means may be rigidly interconnected by bars or the like.
  • Roller units of the above-mentioned type may selectively be employed as feeding members, delivery members, guiding members and/or pressure members. It is possible to journal at least two roller units or aggregates in the bearing means common to said two units or aggregates.
  • FIG. 1 illustrates a heretofore common arrangement and particularly clearly indicates the problem underlying the present invention.
  • the arrangement shown in Figure 1 is a two apron drafting system (Casablanca drafting systems).
  • the aprons R1 and R2 and the clamping line B of the front delivery roller pair Z1 and Z2
  • the shorter the Idistance a the better will be the control of the fibers, especially of the shorter bers, and the less will be the proportion of the floating bers.
  • the radius of curvature r2 of the upper apron which usually passes in slack condition and forward bulging around a likewise stationary edge has a magnitude of about four to live millimeters, a value which cannot be Ina-de smaller even when using an upper pressureroller in a single apron drawing frame.
  • the delivery cylinder Zz is driven and has to transfer forces which act tangentially thereon over the entire length of the machine, Consequently the delivery cylinder Zz must have the required torsional strength and rigidity; in other words, it must have a sufficiently great diameter. Furthermore, no torsional vibrations of the delivery cylinder must occur.
  • Thedelivery cylinder Z2 is at each spinning point subjected to bending stresses by the positively loaded pressure roller Z1.
  • the delivcryroller Z2 therefore, must have the required moment of inertia in order to prevent a bending through beyond a predetermined extent.
  • rl ⁇ hefinvention is primarily based on the principle of combiningat, least two rollers to one supporting roller aggregatezor unit, one of said rollers having a smaller diameter grasping the-liber material whilerthe other roller having. a "larger diameter lserves. as supporting element for the first-nientioned roller.
  • Suchra unit oraggregate replaces vthe, heretofore used individualrollersin the drafting ⁇ system so thatrwhenever the new unit is vbeing used, the heretofore employed large diameter can be replaced by a materially smaller diameter.
  • FIGs 2 and 2a illustrate the principle of the invention in its most simple embodiment.
  • the delivery roller Z2 of Figure 1 has been replaced by the roller unit or aggregate 1, 2.
  • the roller 1 has a smaller diameter than the roller 2 and has a considerably smaller diameter than the heretofore employed delivery roller Z2.
  • the roller 1 having the smaller diameter grasps the liber material in a similar manner as was -done heretofore by the delivery roller Z2, whereas the larger roller 2 serves as supporting andy driving roller for the roller 1.
  • the driving of the roller 1 by the roller 2 may be effected by purely rolling friction, but, if desired, this may also be effected Vby'providing the periphery of the rollers 1 and 2 Vwith a knurled surface or with teeth meshing with each other.
  • the direction of rotation of the roller 2 is naturally opposite to the direction of rotation of the roller 1.
  • Figure 2a furthermore indicates how the larger supporting roller 2 may simulaneously serve as clearer roller, i. e., for removal of the lap from roller 1.
  • the roller 2 is below the clamping point of the ber material provided with at grooves which are provided with clearing elements 2a as, for instance, stripping materialfor clearer rollers, brushes or card wire band. In this way, lap about to form on the roller 1 will be taken olf after half a revolution of the roller 1.
  • roller 2 may be provided with or without a groove and may consist of lap repelling material of any standard type.
  • the two roller unit shown in Figures 2 and 2a and illustrating the principle of the invention in connection with delivery cylinders may also be used as pressure means instead of the roller Z1, while cooperating with a single roller Z2 or with a roller unit 1, 2.
  • the roller unit When using the roller unit as pressure means, the two lateral supports 5 of the unit are rigidly interconnected by means of a transverse bar.
  • the bearing supports may either be divided or the shaft, as illustrated in Figure 5, may be composed of tubular sections 3a.
  • the arrangement of intermediate bearings 6 will aid the entire aggregate against torsion.
  • one or more portions or the entire length of the rollers 1 to 3 may be provided with teeth which, however, should be set back with regard to the belt supporting surface of the rollers so that the belt passing around the rollers 1 and 3 will not be bulged out by the teeth.
  • Supporting roller aggregates according to Figures 2 to 6 may form independent units which may be handled as such and which can be built in as structural units into the drafting systems and so on in the same manner as individual cylinders.
  • the units according to the present invention operate in the following manner:
  • roller 3 is driven because its diameter and thus the respective looping angle of the belt is greatest so that in this way the belt is best carried along.
  • Such a supporting aggregate makes it possible to subject also rollers of smaller radius of curvature to positive clamping pressure without risking any undue bending through and with the possibility to drive such cylinders Without additional lap danger.
  • the smooth outer' encircling surfaces ofthe aggregate oier good withdrawing possibilities.
  • These supporting roller units may be mounted at the various points in the drafting systems of spinning machines and speed frames as shown for instance in Figures 9 to l2, in order to reduce the passage distance and thus the floating fibers.
  • Figure l0 shows a supporting roller aggregate as pressure roller on a normal delivery roller, in addition to the delivery roller also shaft 3, i. e., the entire pressure roller being driven. Also in this instance, a decrease in the passage a is obtained over the application of normal pressure roller Z1, according to Figure l.
  • the supporting bearings 4of the two rollers aggregates shown in Figure 12 may be combined to a single element 13 as illustrated in Figure 13 so that these two supporting roller aggregates will be safely suspended as to the two strongest driven shafts 3 and 3a.
  • the lower belt, as shown in Figure 12 may also whenusing a supporting roller aggregate, be vprovided witha tension Vroller 12.
  • the invention is not limited to the particular embodiments shown in the drawing, butmay also be applied in connection with all types of drafting systems of spinning machines, especially speed frames .and spinning frames.
  • the arrangement according to the invention may also be built into machines using the heretofore customary roller arrangements, in order to reduce the distance between the two drafting elements, especially where heretofore this was not possible due to constructive difficulties concerning the roller diameters.
  • the subdividing of a large diameter intr, ⁇ a plurality of smaller diameters supporting each other is essentialin connection with the present invention. It is also to be understood that the present invention 1s not limited to the particular constructions shown inthe accompanying drawings but also comprises any modifications within the scope of the appended claims.
  • an upper delivery roller in form'of .a pin arranged below and for cooperation ⁇ with said upper delivery roller so as to form a nip therewith for drafting fiber material and delivering drafted ber material to a bobbin, guiding means closely spaced from said delivery rollers and located on the approach side thereof for guiding fiber material being drafted ltoward and between said delivery rollers, and at least one supporting roller arranged below and drivingly engaging said lower delivery roller, the diameter of the rollers below said ,upper delivery roller increasing with each roller below said upper delivery roller and in the direction away from said upper delivery roller.
  • a supporting roller arranged for positive driving connection, a lower deiivery roller in form of a pin having a diameter considerabiy less than the diameter of said supporting roller and having its peripheral portion arranged for frictional engagement with the peripheral portion ofk said supporting roller, said supporting roller supporting said lower delivery roller, an upper delivery roller arranged adjacentto and above said lower delivery roller for drafting ber material therebetween and delivering drafted bermaterial to a bobbin, upper and lower guiding members respectively arranged in closely spaced relationship ⁇ to the nip of said upper and lower delivery rollers for guiding material being drafted toward and between said upperand lower delivery rollers, and clearing cover means mounted on said supporting roller and adapted totcounteract lap accumulation on said lower delivery roller.
  • An arrangement-according to claim 8 which includes first bearing 'means spaced from each other and common tothepsiuperirnposed rollers for supporting the same, intermediate bearing means spaced from said first bearing, means ⁇ 'for .additionally supporting said superimposed rollers, ⁇ and tubeshaped spacer means between said intermediate bearingl means and said first bearing means for maintaining said intermediate bearing means spaced from said rst bearing means.
  • each of said upper and lower delivery means includes three superimposed rollers of different diameters having an endless belt looped therearound, the arrangement being :such that the rollers of the delivery means are arranged adjacent each other and that the belts respectively passing :around the same face leach other only over that respective portion of the belts which contacts the respective roller of smallest diameter', and in which each of the guiding means arranged in closely spaced relationship to the nip of said upper and lower delivery means includes a plurality of rollers successively increasing in Adiameter in a direction away from said delivery means, the rollers 4oi said guiding means having their axes arranged in substantially the same plane a-nd having endless belts respectively looped therearound, the rollers of said guiding means being arranged relative to each other so that the belts pertaining thereto face each other over -the distance extending from one point of contact thereof with the respective roller of largest diameter to one point ⁇ of contact of the same belt with the roller of smallest diameter of the ys

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US2780840D 1952-01-25 1953-01-19 Roller arrangement for drafting systems of spinning machines Expired - Lifetime US2780840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEU1524A DE958817C (de) 1952-01-25 1952-01-25 Klemmwalzenpaar, insbesondere Ausgangswalzenpaar, fuer Streckwerke von Spinnereimaschinen

Publications (1)

Publication Number Publication Date
US2780840A true US2780840A (en) 1957-02-12

Family

ID=7565118

Family Applications (1)

Application Number Title Priority Date Filing Date
US2780840D Expired - Lifetime US2780840A (en) 1952-01-25 1953-01-19 Roller arrangement for drafting systems of spinning machines

Country Status (4)

Country Link
US (1) US2780840A (it)
DE (1) DE958817C (it)
FR (1) FR1074798A (it)
GB (1) GB729253A (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050972A (en) * 1958-04-04 1962-08-28 Kidde Textile Machinery Corp Take-up mechanism for knitting machines
US3070848A (en) * 1963-01-01 Konig

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1083719B (de) * 1956-10-20 1960-06-15 Dr Oskar Koenig Oberwalzenanordnung, insbesondere fuer die Ausgangsoberwalze an Spinnmaschinenstreckwerken
DE1170841B (de) * 1959-12-21 1964-05-21 Konrad Goetzfried Verfahren zum pneumatischen Spinnen eines Fadens

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US375881A (en) * 1888-01-03 Scavenger-roll for spinni ng-m ach in es
US1654940A (en) * 1925-08-19 1928-01-03 Noah E Lucas Underclearer roll
US2178627A (en) * 1939-11-07 devaux

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE352830C (de) * 1922-05-05 Jan Frederik Jannink Walzenstreckwerk fuer Baumwollspinnereimaschinen
FR547209A (it) * 1922-12-04
DE352764C (de) * 1920-01-22 1922-05-04 Fernando Casablancas Streckwerk
FR544236A (fr) * 1921-12-06 1922-09-19 Mécanisme pour l'étirage des fibres de coton
DE461351C (de) * 1925-06-22 1928-06-23 Grant Mclean Nadelwalzenstreckwerk fuer Spinnmaschinen
GB304757A (it) * 1928-01-26
GB384822A (en) * 1932-01-02 1932-12-15 Wool Ind Res Association Improvements in or relating to the spinning of textile fibres
DE678178C (de) * 1936-04-28 1939-07-10 Paul Devaux Durchzugstreckwerk fuer Spinnereimaschinen
DE678179C (de) * 1936-08-31 1939-07-10 Paul Devaux Durchzugstreckwerk fuer Spinnereimaschinen
FR821982A (fr) * 1937-05-19 1937-12-17 Dispositif étireur pour machines de préparation et de filature
US2193196A (en) * 1937-06-15 1940-03-12 H & B American Machine Company Mechanism for drawing textile slivers or rovings
US2132299A (en) * 1937-06-16 1938-10-04 H & B American Machine Company Drawing mechanism for textile slivers or rovings
CH210324A (it) * 1937-12-06 1940-07-15 Casablancas High Draft Co Ltd Meccanismo per stirare stoppini tessili.
CH268501A (de) * 1947-04-11 1950-05-31 Hill Ambler Geoffrey Verfahren und Streckwerk zum Verziehen von Textilfasern.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US375881A (en) * 1888-01-03 Scavenger-roll for spinni ng-m ach in es
US2178627A (en) * 1939-11-07 devaux
US1654940A (en) * 1925-08-19 1928-01-03 Noah E Lucas Underclearer roll

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070848A (en) * 1963-01-01 Konig
US3050972A (en) * 1958-04-04 1962-08-28 Kidde Textile Machinery Corp Take-up mechanism for knitting machines

Also Published As

Publication number Publication date
DE958817C (de) 1957-02-21
FR1074798A (it) 1954-10-08
GB729253A (it) 1955-05-04

Similar Documents

Publication Publication Date Title
US2193196A (en) Mechanism for drawing textile slivers or rovings
US2132299A (en) Drawing mechanism for textile slivers or rovings
US2780840A (en) Roller arrangement for drafting systems of spinning machines
CN102191593A (zh) 纺纱机的牵伸装置
US3636591A (en) Drafting device for textile machines
US2686939A (en) Drawing frame or system comprising an endless belt for conveying the fibrous material in slubbing, roving, and spinning frames
CN103572429A (zh) 在纺纱间机器上的具有牵伸机构的装置
US3727391A (en) Apparatus for drafting and twisting fibers
EP1683898A2 (en) Draft device in pneumatic spinning device
US2074556A (en) Drawing mechanism of spinning machines
DE1859997U (de) Ablegevorrichtung fuer flachkaemmaschinen od. dgl.
JP3085110B2 (ja) 精紡機のドラフト装置
US2025394A (en) Cotton drawing frame
JP7251345B2 (ja) 精紡機
US2141219A (en) Drafting mechanism
US1771656A (en) Textile machine
US4564979A (en) Combing machine for textile fibres
US3350870A (en) Textile drafting apparatus
US2582213A (en) Drawing mechanism for textile fibers
US2098974A (en) Drafting apparatus
US2944301A (en) Roll support for textile apparatus
US1799448A (en) Drawing mechanism for fibrous material
US2387937A (en) Rollers of drafting mechanism for textile fibers
US1936443A (en) Draft roll
US1217067A (en) Spinning-machine.