US3572026A - Drive control for roving frame - Google Patents

Drive control for roving frame Download PDF

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Publication number
US3572026A
US3572026A US805786A US3572026DA US3572026A US 3572026 A US3572026 A US 3572026A US 805786 A US805786 A US 805786A US 3572026D A US3572026D A US 3572026DA US 3572026 A US3572026 A US 3572026A
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United States
Prior art keywords
control
pulley
bobbin
driving
belt
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Expired - Lifetime
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US805786A
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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
    • D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
    • D01H1/14—Details
    • D01H1/20—Driving or stopping arrangements
    • D01H1/32—Driving or stopping arrangements for complete machines
    • D01H1/34—Driving or stopping arrangements for complete machines with two or more speeds; with variable-speed arrangements, e.g. variation of machine speed according to growing bobbin diameter

Definitions

  • the rovings which'areformedfrointextile fibers and which are'fedlby the flyer f'rameare woundonbobbinsin layers lying concentric with the axes'of the frames;
  • a rotary-threaded member which serves to shift a carriage is also axially shiftable under the effect of a'compensating' control system.
  • the invention consists in a control for textile machines comprising-a drivingcone pulley, driven cone pulleys, the axes of the'pulley being arranged substantially parallel to one another, a transmission belt operatively connected between the pulleysfor' transmitting torque from the driving pulley to the driven pulley, the transmission belt being arranged for axiallysliding movementalong to the pulleys, a carriage guiding the'belt, axiallymoveable therewith, operatively connected to a member and axially displaceable in response to movements of. said memberin.
  • the sequenceofsteps in the winding operation is thusfinally determinedhby the-profileof the-cone pulleys and also bythe natureof the,sequencerofmovements of the belt;
  • Themovementof thebeltis generally effected .byta guide forkxwhich isfixed to the cable which runsraround a cam whose: profile corresponds to the: nature of. the speed. cor rectiomwhich is necessitated.
  • the driven cone pulley By means of this speedcontrol it is possible forthe driven cone pulley to' accurately control the sequence of speed changes inthe spindles without. constructing the cone pulleys with steeply sloping surfaces. It is possible to provide a corrective action by use of a particular cone pulley profile, with a slightvariation in" the angle of slope thereof, to provide a cor-- rective action, with greater accuracy, by means of asystem'for controlling'theaxial movement of a threaded member".
  • the compensation means includes a cam which is connected to the. threaded member through an' intermediary assembly including a worm gear I whichis carried by the threaded member and, secondly, a
  • ingmeans for returningthe device to its initial position whichcomprises: an auxiliary motor which is connected, firstly, to thedriving cone. pulley and, secondly, through the intermediary of a freewheel assembly, to the threaded member so that the said driving cone pulley and the: said threadedlmember are driven in a direction'opposite. to that corresponding to their nonnalworking direction.
  • Means for controlling the energization of the said auxiliary motor, and
  • this means serving to controltheenergization of the auxiliary motor comprise an electric circuit equipped with limit switches responsive to. the rotation of thecompensating cam.
  • FIG. 1 shows an elevational view of 'an embodiment of a speed control in the position assumed at the start of aworking cycle
  • FIG. 2 shows, on a larger scale, a detail of FIG. 1;
  • FIG. 3 shows a cross section taken substantially along the line III-III of FIG. 2;
  • FIG. 4 shows an alternative embodiment of speed control shown in FIG. 2;
  • FIG. 5 shows the speed control of FIG. 1 in the position at the end of a working cycle and further provided with an assembly for returning the control to its initial position;
  • FIG. 6 shows a partial, side view, of the spaced control along the line Vl-VI of HO. 5, and
  • FIGS. 7 and 8 show a detail of the speed control shown in FIG. 6 in two different positions and on an enlarged scale.
  • the speed control shown in FIG. 1 includes a driving cone pulley 21 and a driven cone pulley 22 which are respectively carried by two parallel shafts 23, 24, and also a belt 25 which extends about the two cone pulleys and through a guide disposed in a carriage 27 which is movable along a slide 28 which lies parallel to the axes of the two cone pulleys.
  • the carriage 27 carries a threaded portion 32 which threadedly engages a rotary threaded member 33 which extends parallel to the slide 28.
  • the threaded member is disposed on a shaft 29 between two bearings 36 and 37 mounted in the machine frame 38.
  • the driving cone pulley 21 can be driven at different speeds by any suitable means (represented diagrammatically by a toothed gear 41 attached to a shaft 23 on the cone pulley 21 and an interchangeable gear 42 operatively engaging the gear wheel 41 In operation the driven cone pulley 22 rotates a vertical orientated rotatable spindle 45 belonging to a flyer frame.
  • any suitable means represented diagrammatically by a toothed gear 41 attached to a shaft 23 on the cone pulley 21 and an interchangeable gear 42 operatively engaging the gear wheel 41
  • the driven cone pulley 22 rotates a vertical orientated rotatable spindle 45 belonging to a flyer frame.
  • Each spindle 45 on which yarn 47 is wound is rotatably mounted in a support 48 which is slidable along a column 49 in a vertically reciprocating manner under the control of a suitable drive means.
  • the spindle 45 is slidable along a vertical orientated splined shaft 53 the lower portion of which carries a pulley 54 over which runs a belt 55 which passes over a further pulley 56 attached to the lower end of a vertically orientated intermediate shaft 57 the lower end of which is connected to the shaft 24 of the driven cone pulley 22 through bevel gears 58 and 59.
  • Flyers 62 are orientated so as to be coaxially rotatable with the spindle 45 by a belt transmission 63.
  • the threaded member 33 is rotatable about its axis, axially slidable.
  • the threaded member 33 is rotated intermittently by a toothed gear 71 which meshes with a long-toothed pinion gear 72 secured to a shaft 73 which is mounted for rotation in the machine frame 38 and driven through a chain of other suitable transmission 74 by an assembly or rocker unit 76.
  • the rocker unit is arranged to effect reverse reciprocating movement of the spindles.
  • the rocker unit 76 also serves to reduce the magnitude of the alternating working strokes of the spindles and to vary the rotational speed of the spindles as a function of the increase in diameter of the textile (roving) 47 being wound on the bobbin. This latter function is carried out by the threaded member 33 which is driven by the train of motiontransmitting elements hereinabove described.
  • the axial sliding movement of the threaded member 33 is efiected by a compensating cam 81 which is operatively connected to a roller 82 which is carried at a central point of a lever 83 and which pivots, at one of its ends, about a pin 84 carried by the machine frame 38.
  • a finger 85 (see also FIGS. 2 and 3) carried by lever 83 engages in a grooved ring 86 which is freely rotatably mounted on the respective end of the shaft 29 of the threaded member 33 and is retained on this shaft 29 by a disc 87 which is held in position against a shoulder on the shaft 29 by a nut 88 which cooperates with a lock nut 89.
  • the lever 83 is biased for pivoting about pin 84 associated therewith in the direction in which the roller 82 is urged against cam 81 by a spring 92.
  • One end of the spring is attached at 93 to the machine frame 38 and the other end is attached to one end of a rod 95. The other end of the rod is hooked on to the free end of the pivotable lever 83.
  • Cam 81 is attached to a shaft 101 which is rotatable in bearings 102 carried by a support 103 which is secured to the machine frame 38 and which also carries the swivel pin 84 about which lever 83 pivots. Also attached to shaft 101 is a toothed gear 105 which meshes with a worm gear 106 rigidly secured to tee shaft 29.
  • cam 81 is readily interchangeable with another cam different configuration by means of a locating portion 107 to which it is connected by means of a nut 108 located at one end of the locating portion 107, which is threaded and engages an associated aperture in the cam 81.
  • the start and end of a working cycle are accurately determined by two limit switches 111 and 112 whose actuating rollers 113 and 114 are respectively pushed back by two fingers 115 and 116 which are secured to shaft 101 which carries the compensating cam.
  • the control is in the position shown in FIG. 1.
  • the belt 25 passes between the driving cone pulley 21 and the driven cone pulley 22 at the maximum and minimum effective diameter respectively.
  • the cone pulleys are formed such as to minimize the slipping of the belt when the machine starts. This position corresponds to the maximum speed of the driven cone pulley 22 and to the start of the formation of a winding of the roving or yarn on the bobbin.
  • the rotation of the threaded member 33 results in a certain amount of displacement of the carriage 27 and the belt 25, in the direction of arrow f1, i.e.
  • This angular displacement of the threaded member 33 results in an angular displacement of the same magnitude of the worm gear 106 and, consequently, a corresponding angular displacement of the toothed gear wheel 105 and of the shaft 101 which a carries the latter.
  • the compensating cam 81 thus rotates through the angular displacement so that the roller 82, which is urged against the cam. causes the lever 83 to pivot the pin 84 in the direction of arrow f2 which causes the threaded member 33 to be displaced axially for a corresponding amount.
  • the carriage 27 is thus shifted not only as a result of the rotation of the threaded member 33 but also under the effect of the axial displacement thereof. This, of course, has an accelerated compensating effect.
  • the profile shape of the compensating cam 81 is determined so that the axial displacement of the threaded member 33 is appropriate to ensure that the rotation of speed of the spindle 45 varies according to a predetermined required sequence.
  • FIG. 2 shows the initial position 0 of the roller 82 about the cam 81 and 12 successive positions (numbered as 1- -l2). The first four positions corresponding to an effective portion of cam 81, while the last eight positions (5-12) correspond to a functionally noneffective portion of the cam, i.e. the portion of the cam which does not cause axial displacements of the threaded member 33.
  • the corrective displacements of the threaded member 33 brought about by positions 1-4 of the roller along the cam in the course of a working cycle.
  • cone pulleys 21, 22 with linear generatrices and effect the entire compensation by cam 81 or, alternatively, to use cone pulleys of hyperbolic generatrices and bring about half of the necessary corrective action. In so doing there is no problem with excessive inclination of the belt on the cone pulleys for it is unnecessary in that half of the corrective action is performed by the cam. In the regions where the slope of the cone pulleys would, in fact, be too great, the effective parts of the cam which operate over the rest of the cone pulleys, in which the generatrix is relatively flat (of small concavity), the roller would be in: contact with the functionally inactive portion of the cam 81.
  • FIG. 4 illustrates a modification of the embodiment of FIGS. 1 and 2.
  • Theessential difference is that theworm gear 1696A is stationary rather than being fixed to theshaft 29.
  • the worm gear 106A- is fixed to the sleeve 121 whichrotates in bearings 122 carried by the machine frame 38.
  • Shaft 29 is axially slidable in the sleeve 121 butbeing prevented from rotating with respect thereto by a key 123'which is secured in the worm gear 106A and is mounted for axial sliding motion in a longitudinal groove 124 in the shaft29.
  • Thesleeve 121 is axially retained in thebearing 12 2 byashoulder' 127 and a ring 128, the latter of which is fixed to the sleeve by retaining pins or keys 129.
  • FIG. 5 illustrates an apparatus which enables all the components of thespeed control to be automatically brought back tothe position which they assume. at the start of a cycle for winding yarn or roving on a bobbin.
  • This apparatus includes an auxiliary motor 151 which is connected, through a belt transmission 152, firstly tothe shaft of the drivingcone pulley 21' and, secondly, to the shaft 73 operatively connected to the threaded member 33.
  • the belt 152 passes over'a pulley 155 fixed on the shaft of motor 151, over'a pulley 156' attached to the shaft of the driving cone pulley 21, and overa pulley l57'which isfreely rotatably mounted on shaft 73 (for example with the interposition of roller bearings 161, 162) and forms part of a free wheel assembly generally designated as l63'(seeFIG. 7 also).
  • the rotor 164 of this freewheel unit' is integral with shaft73 owing to the provision of a key 165.
  • the wedging elements of the free wheelunit are formed by rollers 167 lying between the cams 168 of the rotor and the cylindrical bore 1690f the hub 171 of the pulley 157.
  • the freewheel unit operates so that when the rotor 164 has stopped or rotates at 'a low speed during the working phase of the drive action of the threaded member 33, the pulley 157 can be driven at high speed in the direction of arrow fii by'the shaft ofcone pulley 21,. which rotates inthe direction of arrow f3 (FIG.- 6), and through the belt 152, and at the sametime drives the auxiliary motor 151 which is no longer energized but turns under no-load conditions.
  • the cone pulleys of the speed control are driven from the'control means 42, and the threaded member 33 is driven from shaft'18l of the'rocker unit (as already explained above).
  • the auxiliary motor 151 is When the active portion of the winding cycle has con- I cluded, the limit switch 112 (FIG. 3) is actuated by a finger 116' carried by the shaft 101 which is attached to the compensating cam 81 is attached.
  • Means will effect mechanical uncoupling of the driving means for controlling the driving cone pulley 21, mechanical uncoupling of the drive 180 of the shaft 181 of the rocker unit, and energization of the auxiliary motor 151, whose circuit connections are so arranged that the motor will now rotate in the opposite direction to that in which it was rotating when driven by the cone pulleys of the speed control inthe no-load condition, during an active portion of the workingcycle for winding roving or yarn.
  • the auxiliary motor 151 which drives through the chain transmission 152 and the free wheel unit 163'in the direction of arrow f7 FIG.
  • the limit switch 111 is actuated by finger 115 which discontinues energization of the auxiliary motor and reengages the couplings of the drive 42, serving to drive the cone pulley 21, and of the drive means 180 serving to drive the rocker unit 76.
  • the assembly is then ready for another .winding cycle.
  • a control for textile machines comprising'a driving cone pulley, a driven cone pulley, the axes .of the pulleys being arranged substantially'parallel to one another,a transmission belt operatively connected between the pulleys for transmitting torquefrom the driving pulley to the driven pulley, the
  • transmission belt being arranged for axial sliding movement along to the pulleys, a member, a carriage for guiding.
  • the belt axially movable therewith, operatively connected to the member and axially displaceable in response to movementsof the member in a first direction and compensating means responsive to the displacement of the member for effecting a further displacement of the member in a second direction and a further axial movement of the carriage and belt to thereby effect the output torque of the driving pulley.
  • the compensating means includes a cam means for' rotating the cam in response to. a displacement of the member, a pivotally mounted lever connected to the member and including a fol lower portion responsive to the rotation of the cam whereby the displacement-of the member in the first direction effects the rotation of the earn which pivots the lever which in turn further displaces the member in the first direction.
  • a control as claimed in claim 4 wherein the means for returning the'transmission belt includes means responsive to 1 the rotation of the cam to the end of the effective portion of the working cycle, said responsive means actuating an auxiliary driving means, said auxiliary driving means operatively connected to the driven pulley and the member for rotating the driven pulley and displacing the member in the reverse direction opposite to their normal directions of movement thereby returning the carriage-and belt to their initial position.
  • a control as claimed in claim 6 wherein a bobbin is provided, transmission means connected between the driven pulley and the bobbin and means for winding thread on the bobbin whereby variations in torque and the rotational speed of the driven pulley are in effect responsive to the degree of winding of the material on the bobbin.

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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)
US805786A 1968-03-12 1969-03-10 Drive control for roving frame Expired - Lifetime US3572026A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR143379 1968-03-12

Publications (1)

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US3572026A true US3572026A (en) 1971-03-23

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US805786A Expired - Lifetime US3572026A (en) 1968-03-12 1969-03-10 Drive control for roving frame

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US (1) US3572026A (it)
BE (1) BE729018A (it)
CH (1) CH500406A (it)
DE (1) DE1913055A1 (it)
FR (1) FR1566512A (it)
GB (1) GB1235095A (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375744A (en) * 1979-09-28 1983-03-08 Rieter Machine Works Ltd. Apparatus for controlling the rotational speed of the spindles of a spinning preparatory machine
CN113215691A (zh) * 2021-05-11 2021-08-06 苏州市诚双纺织厂 一种具有防缠绕功能的纺纱设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD222362B5 (de) * 1983-11-25 1994-05-05 Grossenhainer Textilmaschinen Verfahren zur Vorgarnspannungsregelung an Vorspinnmaschinen mit Einzelantrieben
CN107237016A (zh) * 2017-08-09 2017-10-10 青岛金汇丰机械有限公司 一种粗纱机用无差速系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003362A (en) * 1933-05-17 1935-06-04 Whitin Machine Works Roving frame builder motion
US2175108A (en) * 1938-03-30 1939-10-03 Casablancas High Draft Co Ltd Flier frame for textile rovings
US2870597A (en) * 1957-05-09 1959-01-27 Saco Lowell Shops Roving frame builder mechanism
US3089302A (en) * 1961-09-20 1963-05-14 Perfecting Service Company Lay control transmission for roving frames
US3134217A (en) * 1962-08-09 1964-05-26 Perfecting Service Company Stop motion for fly frames
US3345813A (en) * 1966-02-15 1967-10-10 Shuford Mills Inc Bobbin drive mechanism for roving frames

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2003362A (en) * 1933-05-17 1935-06-04 Whitin Machine Works Roving frame builder motion
US2175108A (en) * 1938-03-30 1939-10-03 Casablancas High Draft Co Ltd Flier frame for textile rovings
US2870597A (en) * 1957-05-09 1959-01-27 Saco Lowell Shops Roving frame builder mechanism
US3089302A (en) * 1961-09-20 1963-05-14 Perfecting Service Company Lay control transmission for roving frames
US3134217A (en) * 1962-08-09 1964-05-26 Perfecting Service Company Stop motion for fly frames
US3345813A (en) * 1966-02-15 1967-10-10 Shuford Mills Inc Bobbin drive mechanism for roving frames

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375744A (en) * 1979-09-28 1983-03-08 Rieter Machine Works Ltd. Apparatus for controlling the rotational speed of the spindles of a spinning preparatory machine
CN113215691A (zh) * 2021-05-11 2021-08-06 苏州市诚双纺织厂 一种具有防缠绕功能的纺纱设备

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Publication number Publication date
GB1235095A (en) 1971-06-09
FR1566512A (it) 1969-05-09
DE1913055A1 (de) 1970-06-04
CH500406A (fr) 1970-12-15
BE729018A (it) 1969-08-01

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