US3295776A - Method and means for readying supply bobbins - Google Patents

Method and means for readying supply bobbins Download PDF

Info

Publication number
US3295776A
US3295776A US402096A US40209664A US3295776A US 3295776 A US3295776 A US 3295776A US 402096 A US402096 A US 402096A US 40209664 A US40209664 A US 40209664A US 3295776 A US3295776 A US 3295776A
Authority
US
United States
Prior art keywords
bobbin
yarn
air
jet
arbor
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
US402096A
Other languages
English (en)
Inventor
David G Cruickshank
Robert E Males
Nelson John
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leesona Corp
Original Assignee
Leesona Corp
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 by Leesona Corp filed Critical Leesona Corp
Priority to US402096A priority Critical patent/US3295776A/en
Priority to GB40125/65A priority patent/GB1085657A/en
Priority to DE19651560415 priority patent/DE1560415A1/de
Priority to NL6512902A priority patent/NL6512902A/xx
Priority to CH1370865A priority patent/CH436064A/de
Priority to BE670641D priority patent/BE670641A/xx
Application granted granted Critical
Publication of US3295776A publication Critical patent/US3295776A/en
Assigned to JOHN BROWN INDUSTRIES LTD., A CORP. OF DE. reassignment JOHN BROWN INDUSTRIES LTD., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: LEESONA CORPORATION; 333 STRAWBERRY FIELD RD., WARWICK, RI. A CORP. OF MA.
Assigned to LEESONA CORPORATION reassignment LEESONA CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE 3-31-81 STATE OF DELAWARE Assignors: JOHN BROWN INDUSTRIES LTD.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/086—Preparing supply packages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • FIG. 7a ATTORNE United States Patent 3,295,776 METHOD AND MEANS FGR READYING SUPPLY BOBBINF;
  • the present invention relates to winding machines of the automatic type wherein yarn is wound from supply bobbins into packages and relates, more particularly, to method and means for readying supply bobbins for rewinding into take-up packages on an automatic winding machine.
  • the structure of the Kieronski patent application consists of an automatically indexing yarn carrier for controlled movement to doif a spent bobbin therefrom and bring a fresh supply bobbin, transferred to said carrier from a reserve magazine, to an active unwinding position; a rotatable arbor for rotating said fresh bobbin in a controlled manner; and fluid means for extricating the outer end of yarn from the fresh supply bobbin and presenting said end for uniting with the loose outer yarn end of the take-up package being wound on the automatic winding machine.
  • Supply bobbins of the type employed for rewinding on a winding machine of the type disclosed in the Goodhue et al. patent commonly are wound so that the final windings of the service wind of the bobbin are at or near the top or apical end of the bobbin as the bobbin is positioned on a spinning frame.
  • the yarn guide means of the frame is lowered to the lower butt end or base of the bobbin in a relatively rapid motion at which time winding of the bobbin is stopped.
  • This final motion of the yarn guiding means produces a rather steep helical turn, or possible several steep helical turns of yarn over the outer wraps of yarn on the service wind.
  • the one or more steep helical turns extending from the top to the bobbin of the service wind are known in the trade as the dotting wind and this term will be employed herein to describe these yarn wraps. Since the bobbin is still rotating and yarn is being wound thereon, after the dofling wind has been formed and with the ring rail at the base of the bobbin, a terminal cluster or bunch of yarn windings is produced on the base of the bobbin.
  • tailing wind is a continuation of the dotting wind which, in turn, is a continuation of the main or service Wind of the bobbin and is formed as an incident of the operation of the frame on which such supply bobbins are wound. Since the machine of the Goodhue et al.
  • the method and apparatus of the cited Kieronski patent application provides automatic means directed to accomplishing the foregoing desideratum.
  • an excessively long length of yarn or a rather large number of coils of yarn exceeding the length of the tailing wind and even the doffing wind, may be stripped off the bobbin during the end-finding and readying cycle.
  • This possibility is presented since the fluid means employed in locating the loose outer end of the supply bobbin exerts a pressure stream along the outer yarn wraps of a part of the service wind as Well as the tailing wind on the bobbin, urging these wraps downward to a cutting means where the yarn is severed.
  • one object of the present invention is to provide a method for readying a supply bobbin automatically for joining of outer end thereof with the outer yarn end of a companion take-up package.
  • Another object of the present invention is to provide means for extricating the outer yarn end of a bobbin automatically and to present said yarn end for joining with the outer yarn end of a companion. take-up package.
  • a further object of the present invention is to provide means for exerting a force tangentially against the zone of a bobbin having the outer yarn end of the bobbin embedded therein to extricate the end therefrom, the force acting in plane in which the yarn wraps are disposed, and means for acting on this outer yarn end after its extrication to manipulate it for joining with the outer yarn end of a companion take-up package.
  • an additional object of the present invention is to provide fluid means for locating the outer yarn end of a supply bobbin, fluid means for introducing the yarn into a zone where, by cooperation of a positive fluid stream and negative pressure the tailing wind of the bobbin is unwound and severed, and the outer end of yarn attached to the bobbin is delivered for uniting with the outer yarn end of a companion take-up package.
  • Another object of the present invention is to provide method and means for locating the outer yarn end of a supply bobbin automatically which is simple in operation and design, yet which is durable and reliable in performance.
  • FIG. 1 is a front elevational View of the present invention incorporated in an automatic winding machine
  • FIG. 2 is a view taken along lines 22 of FIG. 1;
  • FIG. 3 is a View taken along lines 33 of FIG. 2;
  • FIG. 4 is an enlarged perspective view of the bobbin carrier portion of the present invention.
  • FIG. 5 is a perspective view similar to FIG. 4 showing the operation of the transverse jet at the initial stage of extricating the outer yarn end of the bobbin;
  • FIG. 5a is a diagrammatic view illustrating the path of the air from the transverse jet and the course assumed by the yarn end during the readying stage of FIG. 5;
  • FIG. 6 is a view similar to FIG. 5 showing the yarn end as it is acted on by the down-jet and cross-jet;
  • FIG. 6a is a diagrammatic view illustrating the path of the air from the transverse jet, down jet, and cross-jet, and the course assumed by the yarn end in response thereto at the end-finding stage of FIG. 6;
  • FIG. 7 is a view similar to FIG. 5 showing the yarn end engaged in severing means
  • FIG. 7a is a diagrammatic view illustrating the path of air from the transverse jet, down-jet, and cross-jet as the yarn end is positioned as shown in FIG. 7;
  • FIG. 8 is a view similar to FIG. 5 showing the yarn end being conveyed axially of the bobbin by the up-jet.
  • the present invention may be characterized as comprising a yarn carrier arranged for translation around a vertical axis, with a rotatable, inflatable arbor supported on the yarn carrier.
  • the arbor serves to support a supply yarn bobbin thereon and to rotate the bobbin in a direction opposite to the direction of the yarn winding thereof.
  • Centering means are provided to guide the central bore of the bobbin onto the arbor. With the supply bobbin rotating, means are operative to direct a transverse fluid stream against the lower end of the bobbin in a manner such that the fluid stream impinges on the yarn winds of the bobbin at a point tangent to the axis of the bobbin.
  • the force of the fluid stream is directed in the plane of the yarn coils, that is to say, normal to the axis of the bobbin on which the yarn is wound.
  • the outer yarn end normally constituting the tailing wind
  • fluid means are operative to provide a positive pressure against the outer end of yarn to move it into a zone for severing, the positive pressure stream in said zone being directed in a path to create a vortex, the cavity of which forms about the severing means.
  • the cooperative effect of positive and negative pressures is operative to position the outer yarn end for severing.
  • the numeral 10 designates the lower front section of a yarn winding machine which section may be an element of the frame for containing various operative members of the yarn servicing assembly as disclosed in the Goodhue et al. patent earlier identified.
  • the upper part of section 10 is covered by a flat supporting plate 12 on which is disposed various yarn servicing elements including a yarn sensing and tensioning device 14, the construction and operation of which is fully described in US. Patent 3,081,045 issued March 12, 1963 to T. E. Pitts, et al.
  • a bonnet 15 is provided to generally enclose the forward end of section 10, as fully described in the earlier cited ieronski patent application.
  • plate 12 serves as a support for a conventional slub catcher 16, and a yarn guiding bail 18.
  • a rail 20 is situated beneath the front end of section 10 of the machine.
  • This rail 20 constitutes a part of the frame of the winding machine and is supported in fixed, spaced relationship to the floor or other surface on which the machine rests, the support therefore not being illus' trated herein.
  • a pedestal bearing 22 is mounted on the upper surface of rail 20. Screws 23 serve to hold the pedestal bearing in place on said rail.
  • a hollow, tubular and rotatable shaft 24 is journalled at its lower end in the pedestal bearing 22. At its upper end shaft 24 projects into the interior of section 10.
  • a second shaft 26 extends longitudinally within tubular shaft 24, and is held concentrically therewithin by suitable bushings, not illustrated. At its lower end internal shaft 26 passes downwardly through pedestal bearing 22 and rail 20, the lowermost end of said shaft 26 having a bevel gear 30 afiixed thereon.
  • a further bevel gear 32 is suitably supported on a power shaft 34 for rotation and is positioned to enmesh with gear 30.
  • Power shaft 34 extends rearwardly from rail 20 beneath the machine and is connected at its opposing end to a suitable power source, not shown herein, so that, during operation of the machine, shaft 34 undergoes constant rotation and transmits that rotation to internal shaft 26 through bevel gears 30, 32.
  • Clutch means are operative periodically to transmit the drive from internal shaft 26 to external tubular shaft 24 to thereby rotate this external shaft through one full revolution.
  • certain elements of the apparatus which are connected to external shaft 24 are rotated around the axis of shaft 26 as part of the over-all end-finding cycle. These elements include a yarn carrier bracket 40 and a support 42 for a rockable balloon restricting tube 44.
  • bracket 40 is seen to have a stepped-down section 50 which lays in a horizontal plane radially outward from shaft 24.
  • a conventional air motor 52 is affixed on the upper surface of section 50 and toward the outer margin thereof.
  • Section 50 is hollow so as to provide a cavity at 53 (see FIG. 3).
  • the armature 54 of air motor 52 extends downward into cavity 53 and has a pulley 55 secured to the lowermost end thereof. Pressurized air is introduced to air motor 52 via air hose 56 to effect rotation of armature 54.
  • Air hose 56 may be connected to either of a pair of opposite ports 57, 58 to admit air to either side of motor 52. In this fashion the direction of rotation of motor 52 can be controlled.
  • the port not selected to feed air into motor 52 will serve as a vent.
  • Air motor 52 acts as the driving means for an inflatable arbor 60.
  • the lower end of arbor 60 is provided with a whorl 62 which is supported in a pair of spaced anti-friction bearings 64, 66 for rotation.
  • the bearings 64, 66 are press-fitted into a bore through section 50 (see FIG. 2).
  • the lower end of whorl 62 is enlarged to form a pulley 68.
  • An endless timing belt 70 passes about pulleys 55 and 68 so that, as air motor 52 is driven, arbor 60 will be rotated.
  • a port 74 (FIG. 1), for the admittance of air into interspace 72 is drilled through the side of section 50.
  • An air line 76 is connected by a suitable fitting to port 74 and is attached at its opposite end to an air supply source through a main air control valve to be described in more detail hereafter.
  • the whorl 62 of arbor 60 has a radial air passage 78 therein, which said passage extends internally to the center of the whorl.
  • the blade 80 of arbor 60 is drilled longitudinally to provide an air passage at 82, said passage intersecting with passage 78.
  • Transverse branches 84, 86 are bored inwardly of blade 80 and intersect with longitudinal passage 82. The upper portion of said passage 82 is sealed against the leakage of air by a cap 87, and screw 88 which threadedly engages with blade 80.
  • the arbor 60 is comprised, in essence, of two separate bladder portions 94 and 95, the portion 94 being defined between rings 91 and 92, while portion 95 is bounded by rings 92 and 93.
  • a bobbin B may be deposited so that its central bore is received on the arbor. Air is thereupon admitted through port 74, into interspace 72, through passages 78 and 82 and outward through branches 84 and 86 to inflate bladder portions 94 and 95.
  • the bladder thus inflated, grips bobbin B securely whereby the bobbin can be rotated with the arbor as a part of the over-all yarn endfinding cycle.
  • guide 106 and its slot 104 are parallel to arbor 60 and are aflixed to bracket 40 by means such as screws (not shown).
  • Member 100 is provided with a rather wide radial slot 108 which extends from the margin inwardly to the center of said member.
  • slot 103 flares to provide a clearance between arbor 60 and the member so that said member 100 can slide vertically of the arbor 60 without interference therefrom.
  • Member 100 is thereby movable from a lower position with arm 102 bearing on the lower end of slot 104 at which position said member 100 encircles the lower end of spindle blade to a raised or elevated position with member situated in a plane above arbor 60.
  • Member 100 is actuated longitudinally of arbor 60 by means of a cam 110 which engages with slider 102.
  • Cam 110 is mounted fast on a vertical rod 112 by means of a D-shaped hub which mates with a D-shaped section 119 of rod 112.
  • Said rod 112 is rotatably journalled at its lower end in a bracket extension 114, (FIGS. 1 and 2), provided as an integral part of pedestal bearing 22.
  • the upper section of rod 112 is carried for rotation in a bearing 116 mounted at the uppermost end of an arm 118 projecting vertically from bracket 40.
  • Said slider 102 has a bore through its central hub somewhat larger in size than the diameter of rod 112 whereby said slider is supported on the rod 112 for slidable movement axially therealong.
  • pedest al bearing 22 has a flange-like section cast integral therewith, said flange having gear teeth formed therein to provide a sun wheel 120.
  • the lower end of rod 112 has a planetary gear 122 secured tightly thereon.
  • the diameters of the sun wheel 120 and planetary gear 122 are the same so as to provide a 1:1 ratio therebetween.
  • planetary gear is likewise rotated to revolve cam 110. With shaft 24 rotating, if it be assumed that member 100 is in its starting position slider 102 will ride up the inclined edge 124- of cam 110 to lift slider 102 and, hence, plate 100 upwardly.
  • Plate 100 has already been said to act as a centering device. That is to say, a supply bobbin is released from a supply bobbin magazine of the type, for example, fully. described in the cited Kieronski patent application, and enters tube 44 butt-first. Since this operation is achieved at the point where plate 100 is in its elevate-d position the butt end of the bobbin comes to rest on the plate 100. By virtue of the concavity of plate 100 the butt of the bobbin moves so that its central bore is aligned with the central hole through plate 100. Thus, as plate 100 falls downwardly over arbor 60, in response to downward movement of slider 102, the arbor enters into the bore of the bobbin.
  • plate 100 fulfills the further purpose of doflflng the spent bobbin.
  • This operation is effected as said plate 100 is elevated in response to rotation of shaft 24.
  • the bobbin situated on arbor 60 is elevated above the arbor.
  • bracket 42 has an upright arm 132 thereon, see FIG. 1, the upper portion of which carries a roller 134.
  • this roller 134 is moved into engagement with camming surface of a cam member 136 to rock tube 44 and sweep the spent bobbin oft member 100, the bobbin being free to fall out of the tube and away from the yarn carrier.
  • arbor 60 is seen to be partially enclosed by a generally semicircular casing or duct 148 which acts to control the movement of pressurized air in a manner to be related more fully hereafter.
  • Duct 140 is aflixed to bracket 41) and extends from a position with its rear wall abutting against and enclosed by guide 106 to a diametric position where said duct connects with a mating U-shaped air passage 14-2.
  • the outer or remote section 143 air passage 142 is sealed by a wall 144, and the lower side of said section 143 is cut away and enclosed by a waste collecting screen 146 (see FIG. 3).
  • a resilient sealing element or flap 148 having an expandable aperture encloses an opening through the side wall of section 143 proximate to screen 146.
  • a cleaning instrument can be inserted conveniently through the aperture to remove the waste collected on screen 146.
  • the right-hand side-wall 150 (FIG. 1) is formed to be arcuate and is relatively high so as to extend above the upper extreme of arbor 68. It will be observed that this high side-wall 150 extends only partially around arbor 60, this wall then inclining downwardly to join with a lower arcuate side-wall 152 which extends around to connect with air passage 142. Further, duct 140 has a lower wall or floor 154 which fits closely against the raised portion of section 50 containing the whorl 62 of arbor 68. Duct 140 thereby provides a substantially complete enclosure surrounding the upper region of arbor 68. A top wall or cover is provided on duct 140.
  • Said cover 158 encloses the section of duct 148 between plate 168 and the forward end of air passage 142.
  • the edge 159 of cover 158 adjacent plate 100 is formed concentrically around a portion of arbor 60 and is configured to conform essentially to the circumferential dimension of the portion of plate 100 which adjoins therewith so that, when plate 100 is in its lowermost position, it acts generally as a continuance of upper wall 158.
  • the clearance hole in plate 100 which accommodates arbor 60 is only slightly larger than the diameter of the arbor, it will be appreciated that said plate 100 is effective to more or less deter the rapid escape of air upwardly past arbor 60 when this member is lowered around the arbor.
  • duct 150 affords 'a generally enclosed air conduit around the lower section of arbor 60 extending to air passage 142 (see FIG. 4).
  • annulus 160 of tool steel.
  • a pair of opposing cutting wheels 162, 163, are mounted for rotation on respective fingers 164, 165, for movement relative to annulus 160.
  • Each said finger is supported on a respective arm 166, 167 which is, in turn, rockable about an associated stud 168, 169 embedded in the upper surface of bracket section 50.
  • the ends of arms 166, 167 remote from fingers 164, 165 are suitably joined by a pin 172 to an adjusting nut 170 engaged with a screw 174.
  • the screw 174 is threaded through a clip 176 attached to bracket section 50 and upstanding therefrom.
  • axially movement of screw 174 acts to shift the position of adjusting nut 170 causing arms 166, 167 to rock on their studs 168, 169 and move cutter wheels 162, 163 relative to annulus 166.
  • the cutter wheels desirably, are set snugly against annulus 160 to rotate by frictional engagement therewith and to cut yarn introduced therebetween.
  • each fluid jet 186-184 is connected through an appropriate air hose 190, 192, 194 and 196, respectively, to a main air control valve 200 which is, in turn connected to a central air source, not shown, and which may be the same type of air control valve fully described in the Kieronski patent application referred to earlier herein. Since valve 288 is fully described and its operation completely set forth in that patent application further details thereof will not be set forth herein.
  • valve is operable cooperatively with a plurality of trip dogs 202 to admit air through the various jets in a programmed manner as desired and each trip dog is adjustable to control the on-off status of each of the plurality of valves 264 and therefore the flow of air through each of the jets 180 84. It is well within the scope of one skilled in the art to which this invention pertains to adapt the valve of the Kieronski patent application to the requirements of the present invention.
  • transverse jet 180 this jet is joined with its air hose 190 through a connection 286 which has a slotted block 288 cast integral therewith along one side thereof.
  • a clamp screw 210 is passed through the slot in block 288 and threadedly engages in a slidable nut in the slot (not shown), in the top side of bracket section 58.
  • An enlarged shoulder portion of screw 218 binds on the top of block 288 to clamp the block in any desired position within the limits of the slot.
  • transverse jet 188 can be suitably positioned to deliver pressurized air to strike the outer yarn coils or windings at the lower end of the bobbin at a point tangent to the axis of said bobbin, see FIG. 5.
  • the air delivered by transverse jet is operable to raise the outer end of yarn from the donned bobbin and cause this end to unwind from the bobbin as said bobbin is rotated on arbor 60.
  • the target area for the outer yarn end blown by transverse jet 188 is against the interior side of side wall 158 at the point thereof where the open end of slot 188 lies proximate thereto, the end thus entering into the path of the air emitted from down-jet 182.
  • down-jet 182 is secured in an opening through side wall 158 of duct 140 by a collar 212 which is press-fitted into the opening.
  • Downjet 182 is aligned in the vertical plane of and at the outer open end of slot 183 so that the air discharged therefrom flows downward and intersects the path of the yarn delivered by transverse jet 180. This intersecting zone occurs in the region of slot 108 in plate 100.
  • transverse jet 180 and down-jet 182 are cooperative to the end that the outer yarn end which is initially retrieved from the bobbin by the transverse jet is delivered into the air stream from down-jet 182.
  • the yarn end is thereupon blown downwardly below plate and into the interior cavity of duct 140, there being ample clearance between plate 180 and side wall 150 for this movement of the yarn. It has been found in practice that the yarn end will migrate to the region within duct without assistance from the pressure of down-jet 182 and will be duly transferred by the cross-jet to be next described. Yet, down-jet 182 is provided to the end that prompt and rapid delivery of the yarn end into the duct will be achieved.
  • Cross-jet 184 is secured in an aperture 214 through the lower section of side wall and extends into duct 140 below the plane of cover 158.
  • Cross-jet 184 is aligned to deliver air along the interior wall of duct 140 (see FIG. 3), the air current therefrom conforming generally to the contour of this interior wall and circulating vertically around the lower region of arbor 60 due to the arcuate configuration of side walls 150 and 152.
  • the yarn end of the tailing wind is carried between cutter wheels 162, 163 and annulus to be severed.
  • the up-jet 186 provides a blast of air to move the yarn, that is to say, the doffing Wind plus possibly a length of the service wind,
  • up-jet 186 is provided as the upturned end of stiff depending air hose 196, the opposite end of said air hose being fitted into a valve 2112 of main air control valve 200.
  • auxiliary air jets provided for controlling the yarn during its upward movement to the zone enclosed by bonnet 15 and into position for uniting with the yarn end from the take-up package.
  • These jets may include an auxiliary jet 216 receiving pressurized air through a suitable air tube 218 connected to a valve in air control valve 211%).
  • auxiliary jets are fully described in the patent application of Kieronski and reference is directed thereto for further articulars thereof.
  • FIG. 1 the arbor is shown in its active unwinding position.
  • external shaft 24 is rotated by instrumentalities referred to therein to achieve one full revolution of the external shaft.
  • shaft 24 will rotate in a counterclockwise direction (FIG. 3) in consequence whereof a trip dog 202 is carried into contact with an appropriate star wheel 204 to shut off the air to arbor 60 and thereby release the spent bobbin.
  • cam 11% which is fixed on shaft 24 is rotated to bring its inclined edge 124 into engagement with slider 102.
  • slider 1112 is caused to ride up in slot 104 thereby elevating member 100.
  • the base of the spent bobbin on arbor 6t resides on or closely adjacent plate 160, this plate, as it rises, operates to elevate the bobbin off the arbor.
  • roller 13 1 continues into contact with camming surface 136 resulting in tube 44 being rocked counterclockwise (FIG. 1).
  • the spent bobbin falls down through tube 44 to be ejected.
  • Doifing of the bobbin is completed after about 130 of rotation of shaft 24, assuming the shaft 24 to be at zero degrees when arbor 611 is in its active unwinding position as shown in FIG. 1.
  • trip dog 202 engages a star wheel 204 to admit air through air line 76 thereby inflating bladder 90 and causing it to expand against the wail of the central bore of the bobbin B. This occurs after shaft 24 has rotated about 185. With the bobbin B secured on arbor 60 a further trip dog 202 operates to rotate a related star wheel 2114 associated with a valve to admit air through air hose 56 to drive air motor 52 and, in turn, rotate bobbin B opposite to the direction in which the yarn is wound thereon.
  • transverse jet 180 is aligned to direct its air blast against the tailing wind (see FIGS. 5, 5a) at the base of bobbin B and to strike this tailing wind at a point tangent to the axis of the bobbin and generally in the plane of the yarn windings on the bobbin in order to extricate the outer end E of yarn off the adjoining yarn wraps of the tailing wind, the operation being illustrated in FIGS. 5 and 5a. Since the force of the air pressure is in the same plane as the windings on the bobbin, the wraps or coils of yarn on the bobbin are left undisturbed except for the outer yarn end residing in the tailing wind.
  • the yarn end E is thereby extended from bobbin B, through slot 108, and along duct 14%, see FIG. 7. Due to the fact that the yarn will naturally tend to be drawn in a straight line, it will move into the zone of cutter wheels 1162, 163 as it extends between slot 108 and the downstream end of duct adjacent air passage 142. Further, since the current of high pressure air from cross-jet 1% moves along arcuate walls 150, 152 it has a whirling or circular motion imparted thereto tending to form a cavity or vortex at the base of arbor 613 and in the zone of cutter wheels 162, 163.
  • This cavity or negative pressure zone at the center of circulating air from cross-jet 184 creates a pressure differential within duct 141i acting to draw the yarn end E blown downstream by the air from the cross-jet, and engaged of the edge of slot 198, between the cutter wheels and annulus 160, see FIGS. 6 and 641.
  • the tailing wind is severed by the cutter wheels 162, 163 which rotate by frictional engagement with the annulus.
  • the clipped or severed ends of tailing wind are carried away in the stream of air flowing into air passage 142, see FIGS. 7, 70. These ends eventually come to rest on screen 146.
  • the amount or length of yarn which will be cut from the bobbin wiil depends on the duration of the air flow from, particularly, transverse jet and cross-jet 1% combined with the continuance of rotation of the bobbin.
  • transverse jet dhil and cross-jet 184 the downstream movement of the yarn along duct 141i is stopped.
  • These movements coincide with the removal of the tailing wind from bobbin B and are accomplished by positioning appropriate trip dogs 202 to strike suita'ble star wheels 2114 thereby closing the valves which control air movement to transverse jet 180 and cross-jet 1S4.
  • air to down-jet 182 is shut off by closing the appropriate control valve in main air valve 2190 by further trip dog 202.
  • the tailing wind is severed, and jets 180 184 are turned off after generally 250 of indexing of shaft 24.
  • An appropriate air valve in control valve 201) is actuated by a trip dog 202 to admit air to up-jet 186 immediately after jets 180434 are shut off. In consequence thereof the doffing wind is blown upwardly (see FIG. 8) into the zone beneath bonnet 15 to be controlled by instrumentalities associated with control section 11) of the winding machine to unite the supply yarn with the yarn from the take-up package.
  • a method of preparing a bobbin wound with yarn for unwinding comprising the steps of, applying a force to the yarn on said bobbin to extend the outer yarn end from said bobbin in a plane substantially normal to the axis of the bobbin, providing severing means for cutting said outer yarn end, directing a fluid stream in a path to move the extended outer yarn end to said severing means, and severing said outer yarn end to produce a free yarn end connected to said bobbin.
  • a method as set forth in claim 1 including the step of directing the fluid stream in a path to create a vortex in the zone of said severing means to induce said outer yarn end into engagement with the severing means.
  • a method as set forth in claim 1 including the step of applying a force to the outer yarn end to induce said extended yarn end into the path of said fluid stream.
  • a method as set forth in claim 1 including the step of rotating the bobbin in a direction opposite to the direction in which yarn is wound thereon as said force is applied to said yarn.
  • a method as set forth in claim 1 including the step of directing the free yarn end axially of said bobbin.
  • Apparatus for preparing a bobbin wound with yarn for unwinding comprising, support means for positioning said bobbin, first fluid delivery means located to deliver a fluid stream against the yarn on said bobbin in a path substantially normal to the axis of said bobbin to extend the outer yarn end therefrom, severing means operable to sever said outer yarn end extending from said bobbin, and second fluid delivery means for directing a fluid stream against said outer yarn end in a path to induce said end to said severing means for severing to thereby produce a free yarn end connected to said bobbin.
  • Apparatus as set forth in claim 6 including a downjet for directing a fluid stream against said outer yarn end to induce said end into the path of said stream emitted by Said second fluid delivery means.
  • Apparatus as set forth in claim 6 including means for rotating said bobbin in a direction opposite to the direction in which yarn is wound thereon as said stream from said first fluid delivery means is directed thereto.
  • Apparatus as set forth in claim 6 including a conduit for guiding said stream emitted by said second fluid means, said conduit being arranged to circulate said last mentioned stream in a path to create a vortex in the zone of said severing means.
  • Apparatus as set forth in claim 6 including an upjet for emitting a fluid stream to move said free yarn end axially of said bobbin.
  • Apparatus for preparing a bobbin for unwinding comprising support means for positioning said bobbin for unwinding, conduit means having a side wall for partially surrounding said support means, first fluid delivery means located to deliver a fluid stream against the yarn on said bobbin in a path substantially normal to the axis of the bobbin to extend the outer yarn end therefrom, and against the side wall of said conduit means, severing means positioned within the confines of said conduit means and operable to sever the yarn end extending from said bobbin, and second fluid delivery means positioned to emit a fluid stream along said conduit side wall in a path to induce said end to said severing means for severing to produce a free yarn end connected to said bobbin.
  • Apparatus as set forth in claim 11 including means for rotatably positioning said support means, and a motor for rotating said support means in a direction opposite to the direction in which yarn is wound on the bobbin as the stream from said first fluid delivery means is directed to the bobbin.
  • conduit side wall is arcuate to thereby circulate the fluid from said second fluid stream in a path to create a vortex in the zone of said severing means.
  • Apparatus as set forth in claim 11 including an upjet for emitting a fluid stream to move said free yarn end axially of said bobbin.
  • Apparatus as set forth in claim 11 including a Waste collector associated with said conduit means for receiving the yarn severed by said severing means.
  • Apparatus as set forth in claim 12 including centering means for locating said bobbin on said support means, and means associated with said support means to hold said bobbin in position thereon.

Landscapes

  • Replacing, Conveying, And Pick-Finding For Filamentary Materials (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US402096A 1964-10-07 1964-10-07 Method and means for readying supply bobbins Expired - Lifetime US3295776A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US402096A US3295776A (en) 1964-10-07 1964-10-07 Method and means for readying supply bobbins
GB40125/65A GB1085657A (en) 1964-10-07 1965-09-21 Method and means for readying supply bobbins
DE19651560415 DE1560415A1 (de) 1964-10-07 1965-10-01 Verfahren und Vorrichtung zur Vorbereitung einer vollgespulten Bobine fuer das Abspulen
CH1370865A CH436064A (de) 1964-10-07 1965-10-05 Verfahren und Vorrichtung zur Vorbereitung einer mVerfahren und Vorrichtung zur Vorbereitung einer mit Garn bespulten Bobine für das Abspulen it Garn bespulten Bobine für das Abspulen
NL6512902A NL6512902A (de) 1964-10-07 1965-10-05
BE670641D BE670641A (de) 1964-10-07 1965-10-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US402096A US3295776A (en) 1964-10-07 1964-10-07 Method and means for readying supply bobbins

Publications (1)

Publication Number Publication Date
US3295776A true US3295776A (en) 1967-01-03

Family

ID=23590504

Family Applications (1)

Application Number Title Priority Date Filing Date
US402096A Expired - Lifetime US3295776A (en) 1964-10-07 1964-10-07 Method and means for readying supply bobbins

Country Status (6)

Country Link
US (1) US3295776A (de)
BE (1) BE670641A (de)
CH (1) CH436064A (de)
DE (1) DE1560415A1 (de)
GB (1) GB1085657A (de)
NL (1) NL6512902A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373948A (en) * 1965-12-02 1968-03-19 Reiners Walter Method and device for pneumatically removing the tip or foot bunch from supply coils
US3398906A (en) * 1967-03-03 1968-08-27 Leesona Corp Yarn-finding device
US3441230A (en) * 1966-05-27 1969-04-29 Reiners Walter Pneumatic device for seizing a starting length of yarn wound on a cop
US3471101A (en) * 1967-05-05 1969-10-07 North American Rockwell Bobbin-readying means for automatic winders
US3480216A (en) * 1967-08-31 1969-11-25 North American Rockwell Apparatus for preparing bobbins for delivery to an automatic winder
US4036444A (en) * 1975-07-03 1977-07-19 Maschinenfabrik Schweiter Ag Apparatus for pneumatically separating a foot lap from a spinning cop
US4858836A (en) * 1986-12-12 1989-08-22 Murata Kikai Kabushiki Kaisha Yarn end finding device
US4917326A (en) * 1987-04-15 1990-04-17 Murata Kikai Kabushiki Kaisha Fluff scattering preventing device in winder

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769598A (en) * 1952-09-11 1956-11-06 Barber Colman Co Machine for operating upon bobbins
US3034737A (en) * 1957-08-10 1962-05-15 Reiners Walter Method for preparing spinning cops for rewinding
US3059866A (en) * 1957-04-20 1962-10-23 Reiners Walter Method and means for readying spinning cops
US3136494A (en) * 1956-10-18 1964-06-09 Reiners Walter Method and means for preparing spinning cops for rewinding
US3236464A (en) * 1962-02-03 1966-02-22 Reiners Walter Device for removing a starting length of yarn from a textile coil
US3257083A (en) * 1963-03-26 1966-06-21 Reiners Walter Suction device for withdrawing a starting length of yarn from a textile coil

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769598A (en) * 1952-09-11 1956-11-06 Barber Colman Co Machine for operating upon bobbins
US3136494A (en) * 1956-10-18 1964-06-09 Reiners Walter Method and means for preparing spinning cops for rewinding
US3059866A (en) * 1957-04-20 1962-10-23 Reiners Walter Method and means for readying spinning cops
US3034737A (en) * 1957-08-10 1962-05-15 Reiners Walter Method for preparing spinning cops for rewinding
US3236464A (en) * 1962-02-03 1966-02-22 Reiners Walter Device for removing a starting length of yarn from a textile coil
US3257083A (en) * 1963-03-26 1966-06-21 Reiners Walter Suction device for withdrawing a starting length of yarn from a textile coil

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3373948A (en) * 1965-12-02 1968-03-19 Reiners Walter Method and device for pneumatically removing the tip or foot bunch from supply coils
US3441230A (en) * 1966-05-27 1969-04-29 Reiners Walter Pneumatic device for seizing a starting length of yarn wound on a cop
US3398906A (en) * 1967-03-03 1968-08-27 Leesona Corp Yarn-finding device
US3471101A (en) * 1967-05-05 1969-10-07 North American Rockwell Bobbin-readying means for automatic winders
US3480216A (en) * 1967-08-31 1969-11-25 North American Rockwell Apparatus for preparing bobbins for delivery to an automatic winder
US4036444A (en) * 1975-07-03 1977-07-19 Maschinenfabrik Schweiter Ag Apparatus for pneumatically separating a foot lap from a spinning cop
US4858836A (en) * 1986-12-12 1989-08-22 Murata Kikai Kabushiki Kaisha Yarn end finding device
US4917326A (en) * 1987-04-15 1990-04-17 Murata Kikai Kabushiki Kaisha Fluff scattering preventing device in winder

Also Published As

Publication number Publication date
BE670641A (de) 1966-01-31
NL6512902A (de) 1966-04-12
GB1085657A (en) 1967-10-04
DE1560415A1 (de) 1970-04-30
CH436064A (de) 1967-05-15

Similar Documents

Publication Publication Date Title
US3975893A (en) Pneumatically operated yarn threading mechanisms for textile yarn processing machine
US5651507A (en) Yarn splicing device for bobbin-winding textile machines
JPS6047371B2 (ja) オ−プンエンド精紡機
CN101654200B (zh) 纤维机械
US4127983A (en) Yarn guiding and threading mechanisms for use with textile yarn processing machines
CN102530650A (zh) 制造交叉卷绕筒子的纺织机械的工位
US3295776A (en) Method and means for readying supply bobbins
US5109662A (en) Operating method and apparatus for the automated removal of yarn remnants from winding tubes by an automated maintenance and servicing device traveling along a textile yarn processing machine
CN100484855C (zh) 在筒管上卷绕留头纱和交叉卷绕筒子纱的装置
US4120142A (en) Yarn injection mechanism for cooperation with pneumatic yarn threading devices of a textile yarn processing machine
US3217235A (en) Winding machine
US5224330A (en) Arrangement for the intermediate storage of a yarn
US3224692A (en) Transfer tail winding apparatus
US3850377A (en) Apparatus for readying wound bobbins
US5136833A (en) Method and apparatus for removing yarn package and transport adapter from a spindle assembly of a yarn processing machine and securing the free end portion of yarn for transport
US3727852A (en) Bobbin processing
US2395462A (en) Yarn winding machine
CN101481056B (zh) 防扭结装置及具有该防扭结装置的自动络纱机
US5772136A (en) Automatic assembly machine for yarns
US3628320A (en) Method and apparatus for traveler threading
US4118919A (en) Yarn take-up and supply mechanism for use with textile machines
US4137700A (en) Broken yarn transfer mechanisms for textile yarn processing machines
US4164115A (en) Pneumatically operated yarn threading mechanisms for textile yarn processing machines
JPH0351331A (ja) 精紡機における糸取扱い方法並びに装置
US3388872A (en) Pneumatic device for seizing a starting length of yarn from a cop

Legal Events

Date Code Title Description
AS Assignment

Owner name: JOHN BROWN INDUSTRIES LTD.; 100 WEST TENTH ST., WI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:LEESONA CORPORATION; 333 STRAWBERRY FIELD RD., WARWICK, RI. A CORP. OF MA.;REEL/FRAME:003936/0206

Effective date: 19810501

AS Assignment

Owner name: LEESONA CORPORATION

Free format text: CHANGE OF NAME;ASSIGNOR:JOHN BROWN INDUSTRIES LTD.;REEL/FRAME:003936/0238

Effective date: 19810331