US3728852A - Servicing assembly for automatic yarn piecing apparatus - Google Patents

Servicing assembly for automatic yarn piecing apparatus Download PDF

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US3728852A
US3728852A US00149501A US3728852DA US3728852A US 3728852 A US3728852 A US 3728852A US 00149501 A US00149501 A US 00149501A US 3728852D A US3728852D A US 3728852DA US 3728852 A US3728852 A US 3728852A
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assembly
movement
bracket
servicing
ring rail
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US00149501A
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G Anderson
A Harmon
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Maremont Corp
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Maremont Corp
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/013—Carriages travelling along the machines

Definitions

  • the disclosed servicing assembly which preferably includes yarn-positioning and traveler-threading mechanisms, is operable adjacent a ring rail of the spinning machine being serviced by the piecing apparatus.
  • the servicing assembly is mounted by a compound bracket upon an upright splined shaft, which shaft is rotatably mounted upon the mobile carriage of the piecing apparatus and operatively connected to a control cam mechanism of the apparatus, for cablecontrolled vertical movement of the assembly longitudinally of the shaft and horizontal movement thereof in response to shaft rotation.
  • a spring biased latch normally maintains the assembly in an elevated position above the maximum elevation of the ring rail of the spinning machine serviced by the apparatus.
  • a length of the yarn previously spun and wound upon the bobbin encircled by such ring is first withdrawn therefrom by mechanisms which apply a suction force and a beating action to that portion of the surface of the yarn package immediately above the spinning ring. Traveler threading of the withdrawn yarn is then effected by other mechanisms of the apparatus which bring the yarn into desired engagement with the rings surface and pneumatically propel the traveler about the ring and onto the yarn.
  • apparatuses may employ differing piecing techniques, but will in any event similarly include some type of mechanisms for con ducting yarn either to or from the ring-encircled bobbin at the delivery underoing servicing, and for in some manner threading the yarn with the traveler movable about such ring.
  • the servicing assembly embracing such mechanisms for performing the aforesaid functions must be of an extremely compact construction and must possess a high degree of reliability and precision in operation.
  • the mechanisms must perform their functions within a sharply restricted space and in close cooperation with such very small components of the spinning machine as its rings and travelers.
  • Each spinning ring which itself has a maximum diameter of only a few inches, will ofttimes be closely flanked on its opposite sides by antiballooning shields or plates which severely restrict the available working area, and the traveler movable about the ring may measure but a fraction of an inch in its greatest dimension.
  • the difficulty of achieving the necessary precise operation of the servicing mechanisms, within such a sharply confined space and in association with such small machine components, is further significantly aggravated by the fact that the latter are not stationary but rather constantly move both upwardly and downward in a vertical direction with the ring rail during operation of the spinning machine.
  • the servicing assembly and its attendant mechanisms therefore must be capable not only of precise generally-horizontal movement into and out of the confined areas adjacent the spinning rings, while in most cases also providing coordinated movement relative to one another, but additionally must be capable of precise vertical movements in unison with the ring rail of the spinning machine.
  • the apparatus will cause the apparatus to impede or prohibit the performance of other necessary or desired manual or automatic servicing of the spinning machine. If, for example, the piecing apparatus is incapable of movement past one end of the frame of the spinning machine, such machine cannot be serviced by certain types of automatic bobbin donning and doffing equipment now commercially available. In addition to the above described movement capabilities, it is therefore also highly desirable that the servicing mechanisms be movable both into and out of supported relationship with the spinning machines ring rail.
  • a primary object of the present invention is to provide a compact assembly of servicing mechanisms, of the described type associated with an automatic yarn piecing apparatus, which are so mounted and arranged that all required movements thereof are consistently realized in proper sequence and with good precision by relatively simple components of exceedingly durable, easily maintainable and inexpensive construction.
  • Another object of the invention is the provision of an assembly of the type described which normally occupies an inoperative position permitting free unobstructed movement of the piecing apparatus past at least one end of the frame of a spinning machine ser- For commercial usage, all movements of the servicviced by the apparatus, but which is quickly and easily moved during a piecing operation from its inoperative position to an operative position wherein the assembly is supported by a ring rail of the spinning machine for vertical movement in unison therewith, and which is of such light-weight and compact construction as to impose only a negligible load upon the ring rail when in its operative position even without the assistance of counterbalancing systems or the like.
  • a related object is the provision, in association with a servicing mechanism of the type described, of a support member which is automatically movable between retracted and extended positions in response to movement of the assembly to and from its aforesaid inoperative and operative positions, the support member when in its retracted position being disposed closely adjacent the carriage of the piecing apparatus and when in its ex- .tended position projecting from such carriage for engagement with a ring rail of the spinning machine being serviced by the apparatus.
  • a further object is to provide means in association with the aforesaid support member whereby the elevation of the servicing, assembly, when in its operative position, can be precisely adjusted as desired relative to the supporting ring rail of the spinning machine.
  • a more specific object of the invention is to provide a servicing assembly of the described type which is so constructed and mounted that various horizontal movements of the assembly toward and away from the spinning machine, and also relative movement between certain servicing mechanisms of the assembly, can be quickly and easily produced by simple rotary movement of an upright shaft upon which the assembly is supported for free vertical travel.
  • a related object is the provision, in association with such an assembly, of cam means engageable with components of the spinning machine during horizontal movement of the assembly theretoward for insuring accurate alignment between certain servicing mechanisms of the assembly and related components of the spinning machine during each piecing operation.
  • a servicing assembly of the described type is mounted by a compound bracket upon a rotatable splined shaft carried by the mobile carriage of the piecing apparatus.
  • the assembly and bracket are movable axially of the shaft, which extends vertically parallel to and throughoutthe entire extent of the path of movement of the ring rail of the spinning machine serviced by the apparatus.
  • the assembly and bracket are normally maintained in an elevated inoperative position upon the shaft by a spring-biased latch mechanism. At the outset of a piecing operation, release of the latch allows the assembly and bracket to descend by gravity along the shaft.
  • a support member In automatic response to such downward movement, a support member extends outwardly from the compound bracket into an overlying relationship with the ring rail of the spinning machine. Downward movement of the assembly continues until the support member engages the ring rail and supports the bracket and assembly for vertical movement in unison therewith. Adjustment means associated with the support member permit precise adjustment of the elevation of the assembly relative to the ring rail at this time.
  • the assembly In response to simple rotation of the splined shaft, realized by linkage means interconnecting such shaft and the control cam system of the piecing apparatus, the assembly is then extended toward and retracted away from the spinning frame by the compound bracket in the sequence and with the precision required for the various servicing mechanisms to perform their intended functions.
  • those mechanisms of the servicing assembly embodiment hereinafter described include suction head and beater mechanisms for freeing and withdrawing a length of the yarn previously wound upon the bobbin at the delivery undergoing servicing, and air-blast and depressor mechanisms for threading such yarn with the ring-mounted traveler at such delivery.
  • the assembly following vertical movement thereof to its operative position during each piecing operation,.is first advanced so as to bring the suction head and beater mechanisms closely adjacent that surface of the bobbin-yarn package located above andradially inwardly of the spinning ring at the spinning machine delivery undergoing servicing,
  • the servicing assembly is then retracted to withdraw the aforesaid mechanisms, and the depressor mechanism is moved downwardly past the mouth of the suction head and into engagement with the length of yarn extending therefrom.
  • the assembly is then again advanced to bring the depressor and air-blast mechanisms and the engaged yarn toward the spinning ring for traveler threading purposes.
  • the advancement and retraction of the assembly are realized by simple rotary movement of the splined shaft along which the assembly is vertically movable, and the downward movement of the depressor relative to the suction head mechanism is produced automatically by the immediately preceding retraction of the assembly.
  • Precise positioning of the suction head and depressor mechanisms relative to the spinning ring is achieved during the respective first and second advancements of the assembly by cam elements provided in association with such mechanisms and engageable'with such ring and the ring rails holder therefor, respectively.
  • the cam elements properly space the suction head and yarn depressor relative to the spinning ring for yarn withdrawing and traveler threading purposes, notwithstanding possible minor misalignments which at some deliveries might otherwise defeat the yarn withdrawing or traveler threading operations.
  • FIG. 1 is a rear elevational view of an automatic yarn piecing apparatus connected to a shown textile spinning frame or like machine and mounting a servicing assembly in accordance with the invention
  • FIG. 1A is an enlarged rear elevational view, with some components partially broken away, of the aforesaid servicing assembly and associated components of the piecing apparatus of FIG. 1;
  • FIG. 2 is a fragmentary front elevational view, partially in vertical section, of the servicing assembly and some of the associated components shown in FIG. 1A;
  • FIG. 3 is a top plan view taken from FIG. 2 and showing a movement-transmitting linkage associated with the assembly;
  • FIG. 4 is a partially diagrammatic rear elevational view of a cable system employed to move the assembly vertically;
  • FIG. 5 is an enlarged side elevational and partially sectional view showing in solid lines a bracket and support member associated with the assembly and occupying an elevated position wherein the support member is retracted, and showing the same components in phantom lines at a lower elevation whereat the support member is extended and in engagement with the ring rail ofthe spinning machine;
  • FIG. 6 is a fragmentary view, primarily in top plan but partially in horizontal section, taken substantially along line 6-6 of FIG. 2 and reoriented ninety degrees in a counterclockwise direction therefrom;
  • FIGS. 7, 8, l0 and 11 are top plan views, partially in horizontal section and partially broken away in FIG. 10, showing the servicing assembly and adjacent components in the positions sequentially occupied by them during a typical cycle of operation, a fragmentary portion of the ring rail and associated parts of the spinning frame also being shown;
  • FIG. 9 is a fragmentary view, partially in top plan and partially in horizontal section, supplementing and showing a component hidden from view in FIG. 8;
  • FIG. 12 is an enlarged side elevational view, partially in vertical section and partially broken away, taken from and looking in the direction of the arrows I2-l2 of FIG. 11;
  • FIG. 13 is an enlarged fragmentary section taken substantially along line I3--- 13 of FIG. 12;
  • FIG. 14 is an enlarged rear perspective view showing in exploded relationship the assembly and the mounting bracket therefor.
  • FIG. 15 is a fragmentary vertical section taken generally along line 15-15 through the mounting bracket of FIG. 14 and showing the bushing therefor.
  • the spinning machine 10 fragmentarily shown in FIG. 1 is of a conventional type having a plurality of yarn processing deliveries along each of its opposite sides.
  • yarn as roving normally passes downwardly from creel 12 through sets of drafting rolls 14, a guide member 16, a balloon control ring 18, and a traveler 20 (FIGSf7-12) movable about a spinning ring 22 flanked by anti-ballooning plates 24.
  • the spun yarn is then wound upon a bobbin 26 projecting axially upwardly through ring 22, such bobbin being removably seated upon an upright spindle 28 which is rotated at its lower end portion by a drive tape 30.
  • the yarn piecing apparatus 36 shown in FIG. 1 comprises a mobile carriage 38 connected in any suitable manner, as by a-track 40.and overhead rail 42, to spinning machine 10 (and possibly to other similar machines) for movement longitudinally of and closely adjacent at least one side of the machine, and preferably past at least one end thereof, to any one of its yarn processing deliveries requiring servicing by reason of an end-down condition thereat.
  • Carriage 38 includes an open center section 44 and four enclosed housing-like sections 46,48,50,52, the sections 46,48 being disposed on opposite sides of open center section 44 and the sections 50,52 being above and below the same.
  • Repair of the yarn discontinuity at a delivery of machine 10 requiring servicing is effected by various servicing mechanisms which are mounted within open center section 44 of carriage 38 for movement therefrom toward and away from machine 10.
  • These include a spindle rotation control mechanism 54 operable adjacent the elevation of the machines spindle rail 32 for controlling the directions and speeds of rotation of the spindle 28 and bobbin 26 at the delivery undergoing servicing; a yarn withdrawing and traveler threading assembly 56 including a plurality of mechanisms operable adjacent the elevation of the machines ring rail 34 for the withdrawing and traveler threading of a length of spun yarn from the deliverys bobbin 26; and a yarn end joining or piecing mechanism 58 operable adjacent the elevation of the machine's drafting rolls 14 for joining the aforesaid length of spun yarn to the roving yarn issuing from such rolls at the delivery.
  • the present invention is directed to the mounting of and components associated with mechanisms such as those of assembly 56, which must be capable of multidirectional movement toachieve the precise positioning of said assembly and of said mechanisms adjacent to and within the confined areas adjacent a spinning ring 22 on the spinning machines vertically moving ring rail 34.
  • the servicing mechanisms of assembly 56 include a suction head 60 connected to one end of a flexible conduit 62, a beater device 64 connected to one end of a flexible drive shaft 66, a yarn depressor 68 having an elongate main body portion, and an air nozzle 70 connected to a flexible tube 72.
  • Conduit 62, drive shaft 66 and tube 72 respectively extend to an air-suction source, a drive means and a compressed-air source disposed within the enclosed sections of carriage 38 and actuable by associated controls to produce, at desired times and for purposes subsequently discussed, a suction air-flow into the mouth 60 of head 60, rotation of the flexible blade 64' of beater 64, and emission of a blast of air from the open end 70 of nozzle 70.
  • the aforesaid air sources and drive means and their related controls may be of any suitable type, and are not shown in the drawings.
  • Suction head 60, beater 64, depressor 68 and nozzle 70 are all carried directly or indirectly by a frame-plate 73 (FIG. 14) of assembly 56 for movement together as -a unit toward and away from and vertically upward and downward relative to the spinning machine.
  • Beater 64 and nozzle 70 are fixedly mounted on opposite sides of and closely adjacent to mouth 60 of suction head 60, which faces machine 10.
  • Depressor 68 is mounted for pivotal movement in a substantially vertical plane relative to the aforesaid components, and particularly suction head 60, by mounting means best shown in FIGS. 12 and 13.
  • Such mounting means includes a pivot pin 74 slidably and rotatably mounted by suitable bearings 76 within a bore 78 provided through a thickened pad 80 upon suction head 60.
  • the opposite ends of pin 74 project axially beyond the extremities of bore 78 and are respectively provided with enlarged stop elements 82,84 which limit the extent of the pin's axial sliding movement relative to suction head 60.
  • a compression and torsion spring 86 encircles that portion of pin 74 between pad 80 and stop 82, and is secured at itsyopposite ends to such elements.
  • Spring 86 biases pin 74 in an axial direction, to the right as viewed in FIG. 13, normally resiliently maintaining the other stop element 84 in abutment with pad 80, and also biases the pin for rotation about its axis in the direction indicated by the arrow in FIG. 13.
  • Depressor 68 is welded or otherwise rigidly secured adjacent one end to stop element 84 of pin 74, for pivotal movement with and about the axis of the pin between the elevated and lowered positions of the depressor respectively shown in phantom lines (partially) and solid lines in FIG. .12.
  • Depressor 68 has flanges 88,90 formed integrally therewith adjacent its aforesaid one end, while its other end is provided with a downwardly projecting cam element 92 and with a laterally extending flange 94, the latter having an arcuate shape (best shown in FIGS. and 11) complementary to spinning rings 22.
  • Depressor 68 normally occupies the elevated inoperative position shown by phantom lines in FIG. 12, wherein its aforesaid arcuate flange 94 is disposed above and rearwardly of mouth 60' of suction head 60. The depressor is releasably maintained in such position, although subject to the torsional biasing force exerted by spring 86, by 'a pin 96 (FIGS.
  • depressors downward pivotal movement is arrested by engagement of its inner-end flange with an adjustable stop-bolt 98 threadably secured to a projecting car 100 upon suction head 60.
  • spring 86 shifts pivot pin 74 to the right and thereby again causes the depressor to overlie and be supported by pin 96 in such elevated position.
  • assembly mounting means including an upright splined shaft 102 (FIGS. 1-6 and 14) and a compound bracket 104 (FIGS. 1A, 2, 14 and 15) mounting assembly 56 upon and for multidirectional movement relative to carriage 38; assembly moving means including a spring 134 (FIGS. 1A-3), linkage 106 (FIGS. 1A-3) and cable 108 (FIGS. 1A-4) for imparting movement to the assembly; releasable latching means including a latch 110 (FIGS.
  • assembly support means including an extendable and retractable rod-like member 112 (F IG. 5) adapted to at desired times engage ring rail 34 and support assembly 56 for movement in unison therewith; and assembly support control means including a cam plate 1 14 (FIG. 5) for effecting the extension and retraction of member 112 in automatic response to movement of assembly 56-to and from its aforesaid elevated position.
  • splined shaft 102 extends vertically throughout the entire height of open center section 44 of carriage 38 at a location therein offset toward the rear (distal from spinning machine 10) of the carriage and its enclosed side section 46 (to the right as viewed in FIGS. 1 and 1A).
  • Suitable bearings 103 carried by sections 50,52 of carriage 38 support shaft 102 for rotary movement about its axis.
  • the upper end portion of shaft 102 projects into housing-like section 50 of carriage 38, and is connected by linkage 106 to a cam shaft 116 mounted within carriage section 46 and constituting, in accordance with known practices, a standard part of the overall control system of piecing apparatus 36.
  • Linkage 106 includes a plurality of levers 1 18,120,122 and 124', and a rocker shaft 126 on which levers 118 and 120 are mounted, shaft 126 being mounted within carriage section 46 in spaced parallel relationship to cam shaft 116 and projecting above shaft 116.
  • Lever 118 keyed or similarly affixed at one end to rocker shaft 126, at its opposite end carries a cam follower 128 engageable with a cam 130 mounted upon and rotatable with cam shaft 116.
  • levers 120, 122,124 The upper end portion of shaft 126 projects into carriage section 50 and is there joined by levers 120, 122,124 to the upper end portion of splined shaft 102, the levers 120,124 being rigidly affixed at one end to the respective shafts 126,102 and being pivotally interconnected by the remaining lever 122.
  • the connection 132 between levers 120,122 is, preferably and as shown, of a slot-and-bolt or equivalent type permitting adjustment of its distance from shaft 126 for the purpose of readily adjusting as desired the throw of linkage 106.
  • Resilient means such as coil spring 134, which is connected at one end to side wall 51 of carriage section 50 and at its opposite end to a stud 136 upon lever 124, biases shafts 102,126 in clockwise and counterclockwise directions, respectively.
  • the counterclockwise bias upon shaft 126 urges follower 128 of lever 118 into peripheral engagement with cam 130 of cam shaft 116.
  • cam shaft 116 brings a high-dwell segment of cam 130 into engagement with follower 128, it will be apparent that shaft 102 will be rotated in a counterclockwise direction about its axis by linkage 106 against the bias of spring 134.
  • rotation of shaft 102 in the opposite or clockwise direction will occur under the impetus of spring 134 when a low-dwell segment of cam 130 passes into engagement with follower 128.
  • Bracket 104 is connected to that portion of shaft 102 within open center carriage section 44.
  • Bracket 104 includes a yoke-like base section 138 and two lever-arm sections 140,142.
  • Shaft 102 extends through aligned bores provided within the vertically spaced legs 138' of yoke-like section 138 and within an end of lever section 140 disposed between such legs.
  • a bushing 144 (FIG. provided within the aforesaid bores has captive columns of ball bearings 144' received in the grooves between circumferentially adjacent splines of shaft 102.
  • Bearings 144' permit free vertical movement of bushing 144 and with it bracket sections 138,140 as a unit longitudinally of shaft 102, but constrain bushing 144 to rotate in unison with the shaft.
  • Lever section 140 of bracket 104 is clamped or otherwise rigidly secured to bushing 144, and therefore pivots in a substantially horizontal are about the axis of shaft 102 in response to rotation of the shaft.
  • Suitable bearings 146 provided between bracket section 138, on the one hand, and bushing 144 and bracket section 140, on the other hand, permit relative rotation therebetween, such that section 138 is not constrained to pivot or rotate with shaft 102.
  • Bracket section 138 projects radially from shaft 102 to a point closely adjacent the front (adjacent machine 10) open face of carriage section 44, and bracket section 142 is pivotally connected to the free end of section 138 by a vertical pivot pin 148 (see also FIGS. 7-11).
  • Bracket sections 140,142 extend in spaced parallel relationship to one another, from shaft 102 and pin 148 respectively, and at their free outer ends support servicing assembly 56, to the frame-plate 73 of which they are respectively pivotally connected by vertical pivot pins 150,152.
  • the bore 151 provided within frameplate 73 for reception of pivot pin 150 has a diameter sufficiently greater than the diameter of pin 150 to permit, for purposes subsequently discussed, some lateral movement of frame-plate 73 relative to pin 150 and bracket section 140.
  • a pair of bosses 154,156 project laterally from bracket section 138 toward the vertical carriage wall 158 separating carriage sections 44,46.
  • a vertical slot 160 and associated bushing 161 provided within boss 154 receive the outstanding flange of a guide member 162 (FIGS. 1A, 2 and 6) secured to and extending for substantially the entire height of wall 158 in parallel relationship to shaft 102.
  • slot 160 inwardly of bushing 161 provides a passage through boss 154 for cable 108.
  • cable 108 is entrained about suitable guide pulleys, such as those identified by the numeral 166 (FIGS. 2-4), so as to be movable in a closed path of travel through carriage sections 44,46,50 and 52.
  • cable 108 passes loosely through slot 160 of bracket boss 156 in coextensive parallel relationship to shaft 102, and carries a lug 168 adapted to abut the undersurface of such boss.
  • a similar lug 169 upon that portion of cable 108 within carriage section 46 is adapted to at desired times alternately engage vertically-spaced limit switches 170,172 (FIG. 4) mounted within such carriage section.
  • cable 108 is wrapped a plurality of times about each of a pair of rotatable drive capstans 174,176 (FIG. 4).
  • Capstans 174,176 project from the gear box 197 (FIGS. 1, 1A and 4) of piecing apparatus 36, which gear box is driven by a belt 198 from the main drive motor 199 of apparatus 36. Rotation of capstans 174,176 is controlled by suitable electrical systems which include limit switches 170,172 (FIG. 4) respectively.
  • Capstan 174 rotates counterclockwise when actuated, driving cable 108 in a direction moving lug 168 downwardly within carriage section 44 and lug 169 upwardly within carriage section 46. As lug 168 nears the bottom of carriage section 44, lug 169 engages and trips limit switch 172, deactivating capstan 174 and thus halting cable 108. The elevation of lug 168 at this time is below the minimum elevation reached during normal operation by ring rail 34 of spinning machine 10. Capstan 176. rotates in a clockwise direction when actuated, driving cable 108 i in the opposite direction and causing upward movement of lug 168 and downward movement of lug 169.
  • bracket 104 moves upwardly to an elevated position, its boss 154 engages tapered flange 110' of latch 110 and pivots the latch clockwise out of its path of travel. As the undersurface of boss 154 passes above flange 110' of latch 110, the latter is automatically biased into underlying relationship with the former by spring 178.
  • bracket 104 and assembly 56 maintains bracket 104 and assembly 56 in their elevated position until the latch is released, through engagement of its inner flange 110 by the finger 180 upon cam shaft 116, even though in the meantime cable lug 168 may have passed downwardly out of engagement with boss 154 of bracket 104.
  • a horizontally-extending pivot pin 182 and interconnecting counterweight arm 184 secure rod-like support member 112 to boss 156 of bracket section 138 for pivotal movement between retracted and extended positions respectively illustrated in solid and phantom lines in FIG. 5.
  • the center of gravity of arm 184 and support member 112 is so located in relation to the axis of pin 182 that the former are biased about the latter toward their laterally-extended position shown in phantom lines in the lower portion of FIG. 5.
  • an adjustable stopbolt 186 carried by arm 184 engages boss 154 of bracket section 138, and support member 112 extends from carriage 38 into overlying relationship with ring rail 34 of spinning machine 10.
  • the effective elevation of the forward end portion of member 112, when in its extended position, may of course be varied. as desired by adjustment of bolt 186.
  • bracket 104 When bracket 104 is moved upwardly along shaft 102 to the elevation thereof shown in solid lines in FIG. 5, support member 112 engages and is pivoted inwardly to its retracted position by stationarycam means in the form of a plate 114, which projects at such elevation from the rear wall of carriage section 46 in the direction of open center section 44 of the carriage.
  • the lower edge of cam plate 114 preferably flares slightly forwardly, in the direction of machine 10, as shown in FIG. 5.
  • member 112 might be biased to its extended position by a spring or some other type of biasing means.
  • adjustment screw 186 might with equal effectiveness be carried upon the forward end portion of member 112, rather than upon arm 184, in which event arm 184 would directly engage boss 154 of bracket section 138 upon extension of member 112.
  • servicing assembly 56 When piecing apparatus 36 is not engaged in a yarn piecing operation, servicing assembly 56 then occupies its vertically elevated and horizontally retracted inoperative position illustrated in FIGS. 1-7 (solid-line showing only in FIG. 5).
  • Latch 110 underlies and supports bracket 104.
  • Cam shaft 116 is stationary, and follower 128 oflinkage 106 engages a radial segment 130 of cam 130.
  • Support rod 112 is retracted by cam plate 114.
  • apparatus 36 may move freely closely adjacent and longitudinally of spinning machine 10, and if desired past one or both of its opposite ends, to any yarn processing delivery of the spinning machine requiring servicing by reason of an end-down condition thereat.
  • cam shaft 116 causes finger 180 to release latch 110 (FIG. 2).
  • Cam shaft 116 is rotated by a belt 200 (FIGS. 1 and 1A) entrained about a pulley 202 affixed to the lower end of shaft 116 and about a drive pulley 204 of gear box 197, the rotation of drive pulley 204 being controlled by the electrical control circuitry (not shown) of apparatus 36.
  • actuation of capstan 174 (FIG.
  • bracket 104 drives cable 108 until its lug 168 nears the bottom of carriage section 44 and its lug 169 engages limit switch 172. Since no longer held in itselevated inoperative position, bracket 104 descends by gravity along shaft 102. The rate of such descent may be limited, if necessary or desired, by not actuating cable capstan 174 until latch is released.
  • support member 112 passes out of engagement with cam plate 114 and is thereupon automatically biased to its extended position illustrated in phantom lines in FIG. 5. Descent of bracket 104 and the assembly 56 carried by it continue until support member 112 engages ring rail 34 of spinning machine 10. Upon such engagement, which will occur irrespective of the vertical position then occupied by ring rail 34, support member 112 supports bracket 104 and assembly 56 for vertical movement in unison with the ring rail.
  • a stop element 188 (FIGS. 2, 9 and 12) mounted upon any convenient part of assembly 56 beneath and rearwardly of mouth 60 of suction head 60.
  • a stop element 188 At its forward end element 188 has an arcuate cam member 191 adapted to matingly engage the cylindrical outer surface of the spinning ring 22, of the yarn processing delivery of machine 10 undergoing servicing, at an elevation below the path of travel of the traveler 20 about the conventional traveler flange provided at the ring's upper edge. Engagement at such elevation is assured by initial appropriate adjustment of the screw 186 (FIG. 5) associated with support member 112 of assembly 56.
  • a small tab element 192 extends upwardly from the right end of cam member 191, as viewed in top plan in FIG. 9, for engagement with the traveler flange of spinning ring 22 at such time as member 191 engages as aforesaid the rings cylindrical outer surface.
  • cam member 191 both halts the advancement of assembly 56 and, if necessary, laterally realigns the assembly so that mouth 60 of its suction head mechanism 60 and blade 64 of its beater mechanism 64 are disposed closely adjacent the surface of the spun yarn wound upon bobbin 26 immediately above spinning ring 22, as shown in FIG. 8.
  • the realignment of assembly 56 occurs automatically, if required and upon engagement of cam member 191 with spinning ring 22, due to the complementary curvatures of such components and due to the lateral-movement capability afforded assembly 56 by the previously mentioned differences in diameter between the bore 151 and the pin 150 (FIG. 14) interconnecting frame-plate 73 of assembly 56 and lever 140 of compound bracket 104.
  • assembly 56 is moved from its extended position of FIG. 8 to an extreme retracted position illustrated in FIG. 10.
  • Such movement is produced by linkage 106 (FIGS. 1A, 2 and 3) rotating splined shaft 102 in a counterclockwise direction in response to further rotation of cam shaft 116 bringing a high-dwell segment of cam 130 adjacent follower 128.
  • the movement of assembly 56 to its extreme retracted position causes engagement between stop element 82 of yarn depressor pivot pin 74 (FIGS. 10 and 13) and a bolt-type actuator 195 (FIGS. 10 and 14) carried by and projecting an adjustablyvariable distance laterally from lever section 142 of compound bracket 104.
  • Assembly 56 is now again advanced, for traveler threading purposes and as is shown in FIGS. 11 and 12, toward machine 10.
  • Such advancement is produced by spring 134 (FIGS. 1A, 2 and 3) of linkage 106, which rotates splined shaft 102 in a clockwise direction as further rotation of cam shaft 126 brings another lowdwell segment of cam 130 into engagement with follower 128, and is halted by abutment of arcuate flange 94 of depressor 68, which is now disposed forwardly of suction head 60 and stop element 188, with the cylinoperation, it is highly desirable that a precise vertical spacing exist between the traveler flange of spinning ring 22 and the arcuate depressor flange 94 therebeneath engaging the cylindrical outer surface of the spinning ring.
  • cam element 92 (FIGS. 12 and 14) provided upon the undersurface of the leading end of depressor 68.
  • cam element 92 engages and slides along the upper surface of spinning ring holder 190, camming the forward end portion of depressor 68 upwardly about the axis of pin 74 and against the torsional biasing force of spring 86 (FIG. 13) if and as required to insure that the vertical spacing between the traveler flange of ring 22 and the depressor flange 94 will be within desired limits.
  • the stop-bolt 98 (FIGS. 12 and 14) associated with depressor 68 is initially adjusted to assure occurrence of the aforesaid engagement between cam element 92 and the ring holder 190 at each delivery of spinning machine 10 which might require servicing by apparatus 36.
  • Assembly 56 affords many benefits and advantages. While in its elevated position, it in no way impedes movement of carriage 38 longitudinally of spinning machine 10 and, if desired, past one or both ends thereof.
  • the assembly is of a compact and lightweight construction, and is moved to and from its various positions with speed and precision by a relatively small number of highly reliable, durable, and inexpensive components. By utilizing movement of one component to produce or initiate desired movement of another, the use of expensive and frequently unreliable timing devices and the like is minimized.
  • an automatic yarn piecing apparatus servicing a textile spinning frame or like machine having a vertically movable ring rail said apparatus including a carriage movable longitudinally of said machinev adjacent said ring rail, and a servicing assembly adapted during each piecing operation to be supported by said ring rail for movement therewith, the improvement comprising:
  • a servicing assembly support member connected to said assemblyfor vertical movement therewith and for lateral movement relative thereto between an extended position wherein said support member projects from said carriageinto overlying relationship with said ring rail and a retracted position wherein said support member is laterally offset from overlying relationship with said ring rail, said support member when in said extended position thereof being adapted to engage said ring rail and to thereby support said servicing assembly for said movement with said ring rail;
  • support member lateral moving means for laterally moving said support member from one to another of its said positions in response to vertical movement of said assembly adjacent said elevated position thereof.
  • said support member lateral moving means includes biasing means for biasing said support member toward said extended position thereof, and cam means mounted by said carriage adjacent said elevated position of said assembly, said support member engaging and being retracted by said cam means upon upward movement of said assembly to said elevated position thereof, and said support member disengaging said cam means and being extended by said biasing means upon downward movement of said assembly from said elevated position.
  • Apparatus as in claim 1 including releasable latch means carried by said carriage for releasably latching said assembly in its said elevated position upon upward movement of said assembly thereto.
  • said assembly mounting means includes an upright shaft mounted upon said carriage for rotation about its axis, and bracket means connecting said assembly to said shaft for vertical movement longitudinally of said shaft and for lateral movement toward and away from said spinning machine in response to rotation of said shaft.
  • bracket means includes first and second bracket sections connected to said shaft and movable longitudinally thereof as a unit, said second bracket section being pivotable about the axis of said shaft relative to said first bracket section in response to rotation of said shaft.
  • bracket section is pivotally connected to said assembly
  • bracket means further includes a third bracket section extending generally parallel to said second bracket section and pivotally connected adjacent its opposite ends to said first bracket section and to said assembly.
  • said servicing assembly includes a plurality of servicing mechanisms, means mounting one of said mechanisms for movement relative to another of said mechanisms, and cooperating means upon said assembly and upon said bracket for initiating said movement of said one mechanism in response to movement of said assembly away from said spinning machine.
  • an automatic yarn piecing apparatus servicing a textile spinning frame or like machine having a ring rail supporting a spinning ring mounting a traveler thereon, said apparatus including a servicing assembly operable adjacent said ring rail and having a first servicing mechanism adapted to extend a length of yarn over said spinning ring and a second servicing mechanism adapted to engage and position said yarn for travelerthreading purposes, the improvement comprising:
  • assembly mounting means mounting said assembly for movement toward and away from said spinning ring;
  • mechanism mounting means upon said assembly mounting said second mechanism for movement relative to said first mechanism from an inoperative position to an operative position; and cooperating means associated with both of said mounting means for cooperatively effecting said movement of said second mechanism relative to said first mechanism in response to movement of said assembly away from said spinning ring.
  • said mechanism mounting means includes a pivot pin mounted upon said assembly for rotary movement about and linear movement longitudinally of its axis, said second mechanism being affixed to said pivot pin and pivotable therewith relative to said first mechanism upon predetermined linear movement of said pin longitudinally of its axis.
  • an automatic yarn piecing apparatus servicing a textile spinning frame or like machine having a vertically movable ring rail said apparatus including a carriage movable longitudinally of said machine adjacent said ring rail, and a servicing assembly adapted during each piecing operation to be supported by said ring rail for movement therewith, the improvement comprising: assembly mounting means upon said carriage mounting said assembly for vertical movement upwardly to and downwardly from an elevated position above the maximum elevation of said ring rail;
  • bracket means connecting said assembly to said shaft for vertical movement longitudinally of said shaft and for lateral movement of said assembly toward and away from said spinning machine in response to rotation of said shaft, said latch means including a latch element movable into and out of the path of vertical travel of said bracket means and having a cam surface thereon causing movement of said latch element out of the path of vertical travel of said bracket means upon engagement thereby, and resilient means biasing said latch means into the path of vertical travel of said bracket means.
  • said cable means includes a cable passing freely and substantially vertically through said bracket means and drivable in opposite directions, and lug means upon said cable engageable with said bracket means when said cable is driven upwardly through said bracket means, said lug means being movable relative to said bracket means when said cable is driven downwardly.
  • Apparatus as in claim 14, including a pair of oppositely rotatable capstans, said cable being wrapped a plurality of times about said capstans and driven thereby upon actuation thereof.
  • an automatic yarn piecing apparatus servicing a textile spinning frame or like machine having a vertically movable ring rail said apparatus including a carriage movable longitudinally of said machine forwardly of said ring rail, and a servicing assembly adapted to operate adjacent said ring rail, the improvement comprising:
  • bracket means connecting said servicing assembly to said shaft for vertical movement of said bracket.
  • bracket means includes a plurality of interconnected bracket sections movable as a unit longitudinally of said shaft, one of said bracket sections being affixed to said shaft for pivotal movement in response to rotation of said shaft relative to the other of said bracket sections.
  • an automatic yarn piecing apparatus servicing a textile spinning frame or like machine including a ring rail supporting a spinning ring having a traveler flange thereon, said apparatus including a servicing assembly adapted during each piecing operation to be moved generally horizontally toward said ring rail of said machine, the improvement comprising:
  • a yarn depressor mechanism carried by said assembly for movement relative thereto in a generally vertical direction and for generally horizontal movement with said assembly into abutment with the main body portion of said spinning ring;
  • cam means carried by said depressor mechanism and engageable with said ring rail during said generally horizontal movement of said assembly for thereby moving said depressor generally vertically relative to said assembly to position said depressor a desired vertical distance from said traveler flange of said spinning ring abutted by said depressor.
  • an automatic yarn piecing apparatus servicing a textile spinning frame or like machine including a ring rail supporting a spinning ring thereon, said apparatus including a servicing assembly adapted during each piecing operation to be moved generally horizontally toward said ring rail of said spinning machine for positioning a servicing mechanism of said assembly adjacent said spinning ring, the improvement comprising:
  • assembly mounting means including a bracket mounted for generally horizontal movement toward said ring rail during each piecing operation; means interconnecting said bracket and said assembly for generally horizontal movement of said assembly with said bracket and for adjustive lateral movement of said assembly relative to said bracket;
  • cam means comprises an arcuate member having a curvature complementary to the curvature of the outer surface of the main body portion of said spinning ring.
  • bracket includes a plurality of bracket sections, and lost-motion connecting means so interconnecting said assembly and one of said bracket sections as to permit said lateral movement of said assembly under the impetus of said engagement of said cam means with said spinning ring

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00149501A 1971-06-03 1971-06-03 Servicing assembly for automatic yarn piecing apparatus Expired - Lifetime US3728852A (en)

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US14950171A 1971-06-03 1971-06-03

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US3728852A true US3728852A (en) 1973-04-24

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US00149501A Expired - Lifetime US3728852A (en) 1971-06-03 1971-06-03 Servicing assembly for automatic yarn piecing apparatus

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US (1) US3728852A (de)
JP (1) JPS5138812B1 (de)
CA (1) CA949402A (de)
CH (1) CH531064A (de)
DE (1) DE2163140C3 (de)
GB (1) GB1387289A (de)

Cited By (10)

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Publication number Priority date Publication date Assignee Title
US3855769A (en) * 1973-09-19 1974-12-24 Leesona Corp Strand threading mechanism for ring textile machines
US3882664A (en) * 1973-10-17 1975-05-13 Saco Lowell Corp Yarn deflecting means for automatic yarn piecing apparatus
US3905187A (en) * 1974-01-23 1975-09-16 Saco Lowell Corp Auxiliary yarn piecing equipment
US4155215A (en) * 1977-03-28 1979-05-22 Zinser Textilmaschinen Gmbh Automatic threading device for filament winding machines
US4165601A (en) * 1977-03-10 1979-08-28 Zinser Textilmaschinen Gmbh Control system for yarn-tying device of thread-winding machine
US4766718A (en) * 1985-10-16 1988-08-30 Zinser Textilmaschinen Gmbh Positioning mechanism for a traveling automatic maintenance unit for a textile ring spinning machine or the like
CN112111817A (zh) * 2019-06-19 2020-12-22 铜陵松宝智能装备股份有限公司 一种环锭细纱机自动接头方法
CN112111816A (zh) * 2019-06-19 2020-12-22 铜陵松宝智能装备股份有限公司 一种接头机操作台的位置调整机构
CN112111827A (zh) * 2019-06-19 2020-12-22 铜陵松宝智能装备股份有限公司 一种接头机操作平台的位置调整机构
CN112111825A (zh) * 2019-06-19 2020-12-22 铜陵松宝智能装备股份有限公司 一种细纱机自动接头机用的操作台

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DE2454900B2 (de) * 1974-11-20 1981-06-04 Fritz 7347 Bad Überkingen Stahlecker Offenend-Spinnmaschine mit wenigstens einer verfahrbaren Wartungseinrichtung
DE3932664A1 (de) * 1989-09-29 1991-04-11 Rieter Ag Maschf Verfahren zum betrieb einer spinnmaschine, insbesondere ringspinnmaschine, sowie bedienroboter zur durchfuehrung des verfahrens
DE102017123992A1 (de) * 2017-10-16 2019-04-18 Kraussmaffei Technologies Gmbh Einschnecken-Plastifiziereinheit
CZ201848A3 (cs) * 2018-01-31 2019-07-31 Rieter Cz S.R.O. Zařízení pro manipulaci s koncem příze na spřádacím místě prstencového spřádacího stroje, způsob manipulace s koncem příze a prstencový spřádací stroj
EP3748054B1 (de) * 2019-06-06 2023-02-22 Lakshmi Machine Works Ltd. Ringspinnmaschine mit einer automatischen fadenanspinnanordnung und einer kippvorrichtung für eine fadenführung für die automatische fadenanspinnanordnung

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US3403866A (en) * 1966-03-14 1968-10-01 Leesona Corp Textile machine
US3486319A (en) * 1968-06-24 1969-12-30 Parks Cramer Co Apparatus and method for detecting,piecing-up and reporting ends down on spinning machines
US3540200A (en) * 1967-08-19 1970-11-17 Toyo Boseki Automatic yarn piecing apparatus for ring spinning frame or the like

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US3403866A (en) * 1966-03-14 1968-10-01 Leesona Corp Textile machine
US3540200A (en) * 1967-08-19 1970-11-17 Toyo Boseki Automatic yarn piecing apparatus for ring spinning frame or the like
US3486319A (en) * 1968-06-24 1969-12-30 Parks Cramer Co Apparatus and method for detecting,piecing-up and reporting ends down on spinning machines

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855769A (en) * 1973-09-19 1974-12-24 Leesona Corp Strand threading mechanism for ring textile machines
US3882664A (en) * 1973-10-17 1975-05-13 Saco Lowell Corp Yarn deflecting means for automatic yarn piecing apparatus
US3905187A (en) * 1974-01-23 1975-09-16 Saco Lowell Corp Auxiliary yarn piecing equipment
US4165601A (en) * 1977-03-10 1979-08-28 Zinser Textilmaschinen Gmbh Control system for yarn-tying device of thread-winding machine
US4155215A (en) * 1977-03-28 1979-05-22 Zinser Textilmaschinen Gmbh Automatic threading device for filament winding machines
US4766718A (en) * 1985-10-16 1988-08-30 Zinser Textilmaschinen Gmbh Positioning mechanism for a traveling automatic maintenance unit for a textile ring spinning machine or the like
CN112111817A (zh) * 2019-06-19 2020-12-22 铜陵松宝智能装备股份有限公司 一种环锭细纱机自动接头方法
CN112111816A (zh) * 2019-06-19 2020-12-22 铜陵松宝智能装备股份有限公司 一种接头机操作台的位置调整机构
CN112111827A (zh) * 2019-06-19 2020-12-22 铜陵松宝智能装备股份有限公司 一种接头机操作平台的位置调整机构
CN112111825A (zh) * 2019-06-19 2020-12-22 铜陵松宝智能装备股份有限公司 一种细纱机自动接头机用的操作台
CN112111817B (zh) * 2019-06-19 2021-12-10 铜陵松宝智能装备股份有限公司 一种环锭细纱机自动接头方法

Also Published As

Publication number Publication date
GB1387289A (en) 1975-03-12
DE2163140B2 (de) 1975-01-30
DE2163140A1 (de) 1972-12-14
JPS5138812B1 (de) 1976-10-23
DE2163140C3 (de) 1975-09-18
CA949402A (en) 1974-06-18
CH531064A (de) 1972-11-30

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