US3032073A - Coil winding machine - Google Patents

Coil winding machine Download PDF

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US3032073A
US3032073A US690838A US69083857A US3032073A US 3032073 A US3032073 A US 3032073A US 690838 A US690838 A US 690838A US 69083857 A US69083857 A US 69083857A US 3032073 A US3032073 A US 3032073A
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coil
shaft
coils
conveyors
flier
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Harry W Moore
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings, prior to mounting into machines
    • H02K15/0435—Wound windings

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  • H/S HTTOEA/EKS V May 1, 1962 H. w. MOORE COIL WINDING MACHINE 3 Sheets-Sheet 3 Filed Oct. 17 1957 INVENTOR.
  • This invention relates to a coil winding machine for winding coils upon a mandrel element and moreparticularly to an improved mandrel assembly for recelvmg coils as they are Wound and for subsequently discharging the coils onto an accumulator, although the invention is not necessarily so limited.
  • An object of this invention is to provide an improved coil winding machine wherein coils wound by a flier onto a mandrel assembly are retained by the mandrel assembly and advanced progressively to an accumulator onto which the coils are discharged.
  • Another object of this invention is to provide an improved mandrel assembly including a pair of juxtaposed conveyors carrying a plurality of coil receiving elements which co-operate in pairs to provide coil receiving forms, the construction and arrangement being such that the coil receiving forms are advanced by said conveyors first into position to receive a coil and then into position to discharge the completed coil.
  • a further object of this invention is to provide drive means for the aforesaid mandrel assembly and means for synchronizing the operation of said drive means with the operation of the coil winding mechanism.
  • Still another object of this invention is to provide an mproved mechanism for wrapping a tape about the coils formed upon the mandrel assembly as these coils are advanced from the point of formation to the point of discharge.
  • Still a further object of this invention is to provide an accumulator for receiving coils discharged by the mandrel assembly, which accumulator functions to accumulate a given number of coils and then to release these coils for removal from the coil winding machine.
  • Still a further object of this invention is to provide, in a coil winding machine, an improved flier assembly for winding the coils upon a mandrel receiver and improved means for layering the coils onto the receiver.
  • FIGURE 1 is a side elevational view of the coil winding machine of this invention with some parts broken away and others illustrated in sectional detail to reveal the interior construction thereof.
  • FIGURE 2 is a fragmentary top plan view of a portion of the coil winding machine of FIGURE 1.
  • FIGURE 3 is a sectional view taken substantially along the line 33 of FIGURE 2.
  • FIGURE 4 is an enlarged fragmentary perspective view of a drive mechanism for the mandrel assembly of the coil winding machine of FIGURE 1 with portions broken away.
  • FIGURE 5 is an enlarged fragmentary plan view of an assembly for placing a strip of adhesive tape about the coils formed by the coil winding machine of FIG- URE 1.
  • FiGURE 6 is a fragmentary plan view drawn to reduced scale showing the assembly of FIGURE 5 in an operative position.
  • FIGURE 7 is an enlarged perspective view of a coil wound by the coil winding machine of FIGURE 1.
  • FIGURE 1 a conventional drive assembly 10 for operating the coil winding machine.
  • the drive assembly 10 which includes an electric motor or the like, not shown, for imparting rotation to a shaft 12 also includes conventional clutch and brake mechanisms for stopping and starting the rotation of the shaft 12 at predetermined intervals, as will be described in greater detail hereinafter.
  • the drive assembly Ill derives support from a bed or platform 114, but is broken away therefrom in the drawings for convenience.
  • a tubular shaft 16 co-axial with the axis of rotation of the shaft 12.
  • the shaft 16 is partitioned by a wall 18 extending normal to the geometric axis thereof.
  • Telescoped on the tubular shaft 16 and splined thereto by means of ribs 20 is a second tubular shaft 22.
  • the arrangement is such that the shaft 22 rotates with the shaft 16 but is slidable axially thereon.
  • An L-shaped flier element 24 is fixedly secured to the shaft 22 and counterbalanced for rotation by a suitable weight 26. Wire, illustrated at 28, is supplied to the flier 24 as follows.
  • a cylindrical body 30 mounted within shaft 16 on one side of the partition 18 therein, is a cylindrical body 30 recessed to receive a pulley 32.
  • Body 36 is splined to shaft 16 with a rib 34.
  • Wire 28 is fed to the pulley 32 through central borings provided in the shaft 12 and the cylindrical body 30.
  • the shaft 16 and the shaft 22 telescoped thereon are provided with aligned apertures 36 and 3S permitting the wire 28 to pass from pulley 32 to a pulley 46 mounted for rotation on the flier 24.
  • the aperture 38 is large enough to permit axial movement of the shaft 22 without interference with the wire 28.
  • From the pulley 46 wire 28 passes to conventionally arranged pulleys 42 and 48 journalled in a supporting element 44 fixedly attached to the flier 24 by means of an arm 46.
  • the wire leaving pulley 48 is wound onto a mandrel assembly as will be described in greater detail in the following.
  • the wire is tensioned at its source by conventional means not shown.
  • the mandrel assembly upon which the coils are wound by the flier 24 is supported as follows. Journalled for rotation upon bearings 56a and 5% within the outer end of shaft 16 is a shaft 52 for supporting the mandrel assembly. Between the bearings 50a and 5% are concentric cylindrical sleeves 60 and 62 which maintain these bearings in fixed spaced relation. A portion 53 of the shaft 52 is enlarged and journalled within a bearing support member 54 fixedly secured to the shaft 16 by suitable bolts 56. The end of the shaft 52 projecting into the shaft 16 is threaded to receive a nut 58.
  • the nut 58 is tightened upon a lock washer 59, against bearing 50a so that bearings Stla and Sill) along with the sleeves 6t and 62 are compressed in a tight sandwich against the shoulder formed by the enlarged portion 53 of the shaft 52.
  • Bearing member 54 compresses this: sandwich between itself and a shoulder 64 formed within the tubular shaft 16.
  • This bearing assembly supports the shaft 52 for independent rotation relative to the flier 24 and also supports the shaft so that the rather large weight of the mandrel assembly can be supported by the end of the shaft 52 projecting outside the tubular shaft 16.
  • Shaft 52 terminates in an enlarged disc portion 66 to which is secured a body member 68 which supports the mandrel assembly.
  • Body member 68 is oriented in a plane normal to the axis of rotation of the flier 24 and is of such a dimension that the flier may rotate thereabout.
  • body member 68 is provided with a dovetail slot 79 which slidably receives like housings 72a and 72b supporting conveyor assemblies designated by the reference numerals 74 and 76.
  • housings 72 which are mounted one above the other, threadedly engage a shaft 73 journalled within body.
  • Shaft 73 is oppositely threaded for the housings 72a and 72b so that the vertical separation between these housing may be adjusted by manual rotation of this shaft.
  • Each housing 72 includes a pair of side rails 78 which form the sides of the conveyor assemblies 74 and 76.
  • a horizontal shaft 80 supporting, as best seen in FIGURE 3, a sprocket 82.
  • a similar shaft 84 supports a similar sprocket, not shown, on the outwardly projecting ends of the side rails 78.
  • the shafts 84 are journalled in journals 85 adjustably secured to the side rails '78 by screws 87.
  • the sprockets co-operate to support conveyor chains illustrated in FIGURE 3. These chains, which resemble ordinary bicycle chains, comprise a series of rollers 86 supported in spaced relation by links 89.
  • the journals 85 are adjustable to enable proper tensioning of these conveyor chains.
  • Each coil receiving element comprises an L-shaped member 88 having a planar member 92 pivotally secured thereto so as to form a U-shaped element.
  • each member 88 is provided with spaced flanges 93 at the base thereof straddling the supporting conveyor chain. These flanges are fixedly joined to the links 89 of the chain between each pair of rollers 86.
  • the U-shaped coil receiving elements are carried in tightly spaced relation by the conveyor chains.
  • the conveyor chains are driven in synchronism by a suitable driving assembly and are so arranged that the coil receiving elements on the two chains are aligned in vertically spaced relation.
  • coil receiving elements on the upper portion of the upper conveyor 74 are aligned vertically with the coil receiving elements on the lower portion of the lower con veyor 76 and co-operate therewith to provide coil receiving channels on the upper and lower sides of the conveyor assemblies.
  • the coils are wound into these aligned channels and encircle both conveyors as illustrated in FIGURES 1 and 3.
  • Successively wound coils designated 208a, 208b, 208e, 208d, and 2082 are illustrated.
  • Channels for receiving the coils at the sides of the conveyor assemblies as the coils are wound are provided as follows.
  • Adjustably secured to the sides of the conveyor housings 72 by means of screws 94 are guide brackets 96, there being one guide bracket on each side of each housing 72.
  • these brackets 96 may be moved vertically one toward the other and one away from the other by virtue of their slidable connection with the housings 72.
  • Portions 98 of these brackets 96 extend parallel to the side rails 78.
  • Each bracket 96 also includes a laterally outwardly projecting flange portion 100 which functions as a side rail for a coil receiving channel.
  • flange members 102 Co-operating with these flanges 100 and in spaced relation thereto are flange members 102 reciprocally positioned by means of air cylinders 104 as follows.
  • the flange members 102 are secured to vertical brackets 106 by means of screws 108 and slide plates 109.
  • the screws 108 penetrate vertical slots 111 within the brackets 106 to provide for vertical adjustment of the flange members 102.
  • the brackets 106 are mounted at their ends for sliding horizontal movement on parallel rods 110. These rods 110 are anchored in U-shaped support members 112 which in turn are secured to the base platform 114 by suitable arms 116.
  • pairs of flange members 102 are thus supported on each side of the aligned conveyor assemblies 74 and 76.
  • the brackets 106 are each actuated horizontally by the plunger 117 of an associated air cylinder 104, there being one air cylinder on each side of the aligned conveyors supported by the support members 112.
  • the construction is such that the flange members 102 maybe actuated inwardly into abutment with the guide brackets 96 to provide a channel for receiving a coil as it is wound and they may be actuated away from the guide brackets 96 to enable the coil to be moved out of and away from the plane in which it is wound.
  • this mechanism includes a hydraulic piston 260 engaging a yoke member 262, which is pivotally mounted to a bracket 266 fixedly secured to the housing for the drive mechanism 10.
  • the yoke 262 which is bifurcated engages the opposite sides of a cylindrical member 270 rotatably secured to the tubular shaft 22 by means of a bearing 272, the latter being secured by snap rings 274.
  • the construction of this layering assembly is such that the cylindrical member 270 is free to rotate on the shaft 22 but is restrained from axial movement thereon.
  • this layering mechanism is as follows. As the flier 24 is rotated by the drive assembly 10, the hydraulic piston 260 is repeatedly actuated by a hydraulic supply, not shown, to reciprocate the yoke 262. The yoke 262 in turn reciprocates the cylindrical member 270 and in turn the tubular shaft 22. The tubular shaft 22 imparts reciprocatory movement to the flier 24 so as to layer the coils within the coil receiving elements as the flier 24 rotates. It is to be understood that the relative axial and rotary movements of the flier 24 will be determined largely by the diameter of the wire which is to be layered within the coil receiving channel and the width of the coil receiving channel.
  • an actuator shaft 118 is journalled for rotary motion in a bracket 120 secured to the body member 68. T he actuator shaft 118 passes vertically through each of the housings 72a and 72b. Within each of the housings 72 a worm 122 is fixedly attached to the actuator shaft. The Worms 122 in the housings 72 are threaded oppositely. These worms 122 each engage a gear 124 splined to the shaft journalled within the associated housing 72. Through rotary motion of the worms 122, and the sprockets 82 thereby, the conveyor chains are caused to rotate.
  • the shaft 118 is rotated by the mechanism illustrated in FIGURE 4.
  • This mechanism which is housed in a housing 300 under the platform 114 includes a rack 302 which is actuated reciprocally by an air cylinder 304.
  • the rack 302 engages a gear 306 which is connected through a shaft 307 to a gear 308 which drives a rack 310 reciprocally within the housing in a direction normal to the direction of movement of rack 302.
  • the rack 310 is stabilized by rollers 312 and the rack 302 is stabilized by a roller 314.
  • the rack 310 reciprocates between housings 315 attached to housing 300 rotating a pinion 316 which is splined to a tubular shaft 318.
  • the aperture within the tubular shaft 318 has a hexagonal cross-section.
  • a hexagonal shaft 320 Slidably mounted within the shaft 318 is a hexagonal shaft 320 terminating in an adapter portion 322 provided with a slot 324.
  • the shaft 320 is adapted to be actuated vertically by an air cylinder 326. Upon vertical upward actuation of the shaft 320, the adapter portion 322 is carried into engagement with a flattened end portion 328 of the shaft 118.
  • this mechanism is as follows. Initially when it is desired to advance the conveyors 74 and 76 the air cylinder 326 is energized. This moves the shaft 320 upwardly to bring the adapter portion thereof into engagement with the shaft 118. Subsequently, air cylinder 304 is energized to cause rotation of the shaft 118. This advances the conveyors a predetermined distance. The air cylinder 304 is then deenergized stopping rotation of the conveyors and subsequently the air cylinder 326 is energized to retract the shaft 320. With the shaft 320 retracted, the flier 24 is free to rotate about the body member 68. After the shaft 325) is retracted, air cylinder 3%4 is reversed to reset the conveyor drive mechanism. Suitable stops, not shown, limit the movement of air cylinder 304 such that the advancement of the conveyor chains may be accurately reproduced.
  • the conveyors advance such that the upper surface of the upper conveyor moves in the same direction as the lower surface of the lower conveyor. With reference to FIG- URE 1, this enables the coils formed upon the conveyors to be advanced to the right toward the outwardly projecting rounded ends of the conveyors.
  • each of the guide brackets 96 is provided on its left hand margin with a rack engaging a gear 152 mounted upon a horizontal shaft 154.
  • the gear 152 threadedly engages a worm 156, there being two gears 152 and one worm in each of the housings 72a and 72]), with the worms 156 in these two housings threaded oppositely.
  • These worms 156 are splined to a shaft 158, which rises vertically from the bracket 129 of the body member 68 parallel to the shaft 118.
  • the shaft 158 terminates in a flattened end portion 162 similar to the end portion 328 of the shaft 118.
  • the shaft 158 is rotated by the following mechanism.
  • this mechanism includes an air cylinder 164 adapted to actuate a rack 166 reciprocally within the housing 3%.
  • the rack 166 stabilized by rollers 168, engages and rotates a pinion 1'70 splined to a tubular shaft 172.
  • the shaft 172 is provided with a hexagonal aperture slidably receiving a hexagonal shaft 174.
  • the shaft 174 is reciprocated vertically by an air cylinder 176.
  • the shaft 174 terminates in an adapter portion 173 provided with a slot 13 analogous to the adapter portion 322 of the shaft 320.
  • the mechanism operates as follows. Upon energizetion of the air cylinder 176, the shaft 174- carrying the adapter portion 178 is actuated vertically upwardly to bring the adapter portion 178 into engagement with the flattened end portion 162 of the shaft 1153. Upon subsequent energization of the air cylinder 164, the rack 166 is driven so as to rotate the shaft 174, causing rotation of the shaft 158. Upon rotation of the shaft 158, the guide brackets 96 are driven one toward the other. As is most apparent in FIGURE 3, this movement of the guide brackets 96 will release the coils formed thereon from compressive engagement therewith. This enables the coils to be moved by the mechanism described hereinbefore.
  • the air cylinder 164 When the coils have been advanced the predetermined distance, the air cylinder 164 is retracted. This replaces the guide brackets 96 to their original position. Subsequently, the air cylinder 176 is energized to retract the shaft 174. Clearly, the advancement of the conveyors and the adjustment of the distance between the guide brackets 96 must be accomplished when the flier 24 is stopped.
  • each of these coils is wrapped with a tape by the following mechanism.
  • a tape 1% is supplied by a reel 192.
  • the tape 1% passes through a series of three pinching rollers 194, 1% and 198.
  • the roller 1% is a driven roller which serves to draw the tape 19% from the reel advancing it under a roller 2% mounted within a housing 2114 through a slotted guide element 206 to a position overlying the coil which is to receive the tape.
  • This coil is designated by the reference numeral 208C.
  • an air cylinder 210 is energized.
  • the air cylinder 21f! reciprocally moves a bracket 212.
  • the bracket 212 carries a knife member 218 slidably mounted in a guide 214 secured to a supporting frame 216.
  • the knife is moved downwardly as viewed in FIG- URE 5, to sever the length 1900 of the tape overlying the coil 2118c. This operation is performed in its entirety during the time the flier is winding a new coil.
  • the bracket 212 also carries a journal member 220 supporting a shaft 222. Mounted on the shaft 222 are a pair of jaw members 22 -1 and 226 each provided with a tapered tooth 228. Spring means 227 bias the teeth 22% into compressive engagement.
  • the jaw members 224 and 226 Upon actuation of the air cylinder 210, the jaw members 224 and 226 are urged downwardly as viewed in FIGURE 5 through the slotted guide element 2% whereupon they advance upon the strip of tape 1911a, which is simultaneously being severed. As the jaw members 224 and 226 strike the coil 21180 which is to receive the tape 1911a the teeth 228 carried thereby cam against the coil to spread apart, then pass around the coil, then clamp together again to wrap the tape 19% about the coil.
  • FIGURE 3 illustrates the side rail 78 behind the portion of the coil 2118c which is to be taped is notched at 22? to provide clearance for the jaw teeth 228 behind the coil.
  • the teeth 228 cam back over the coil and withdraw from the coil. This completes the taping operation.
  • FIGURE 6 illustrates the teeth 228 in the position in which they are cammed over the coil 2118c.
  • FIGURE 7 illustrates a completed and taped coil 298, with strands which interconnect the coils cut off.
  • the completed coils are discharged from the conveyors as follows.
  • the U- shaped coil receiving elements carrying the coils are caused to round the end portions of the conveyors.
  • the coil receiving elements carried by the separate conveyors approach one another.
  • the planar members 12 of the coil receiving elements of the lower conveyor 74 pivot away under the influence of gravity from the associated L-shaped members 88 as these coil receiving elements round the end of the conveyor. This enables the completed coils to slip out of the coil receiving elements and drop onto an accumulator labeled 160.
  • the accumulator has a downwardly descending sloped portion 161 leading to a second downwardly descending sloped portion 163 of lesser slope.
  • the completed coils slide downwardly on the accumulator onto the portion 163 and there are stopped by a flange 246 co-operating with a vertical shaft 242.
  • a coil 21132 is illustrated substantially at the end of the accumulator. It is to be understood, of course, that all coils are joined by a connecting strand, not shown, due to the fact that the coils are wound from a single interrupted strand. Interconnected coils which would ordinarily be found between the coils 208d and Ztlde in FIGURE 1 have been eliminated from the drawing to avoid confusion of detail.
  • the shaft 242, which is seated in a hollow portion 244 of the accumulator 160, is mounted for vertical reciprocal motion in the platform 114 and is adapted to be driven vertically by an air cylinder, not shown.
  • a second shaft 246 mounted for vertical reciprocal motion in the platform 1.14 is actuated vertically upwardly by an air cylinder not shown.
  • the shaft 246 rises upwardly in spaced relation to the shaft 242 to engage a hollow portion 248 of the accumulator the arrangement being such that the shafts 242 and 245 engage the accumulator in spaced relation on opposite ends of the sloped portion 163 of the accumulator.
  • the accumulated coils are therefore situated between the shafts 246 and 242.
  • the air cylinder governing the operation of the shaft 242 is actuated to retract the shaft 242. This enables the coils accumulated on the accumulator 169 to be out free and removed either manually or automatically by apparatus not shown. When these coils have been removed, the shaft 242 is returned to its position in engagement with the accumulator 160 and the shaft 246 is withdrawn to enable the accumulation of additional coils on the portion 163 of the accumulator 160.
  • the mandrel assembly comprising the conveyors 74 and 76 is rotatably mounted relative to the flier 24.
  • the shafts 242 and 246 supporting the accumulator 160 co-operate to prevent rotation of the mandrel assembly.
  • the accumulator 164) is fixedly attached to the side members 78 of the upper conveyor '74.
  • the complete operating cycle of the coil winding machine is reviewed in the following.
  • the coil winding machine is illustrated at the termination of the winding of coil 2M0.
  • the air cylinder 164 was actuated to bring the flange members 102 into engagement with the guide brackets 96.
  • the flier 24 was rotated by the drive mechanism while simultaneously the hydraulic piston 269 was actuated reciprocally to layer the coil within the coil receiving channel.
  • drive wheel 196 associated with the tape dispensing mechanism was actuated to position a piece of tape 130a over the previously wound coil 2080.
  • air cylinder 210 was actuated to Wrap the strip of tape 196a about the coil 298a and then retracted to complete the taping operation. After a predetermined number of turns were wound in the coil 208a the flier was stopped in the position illustrated in FIGURE 1.
  • the hydraulic cylinder 266 is actuated to shift the flier 24 to the extreme left as viewed in FIGURE 1.
  • air cylinder 164 is actuated to retract the flange members 102 from the guide brackets 96 so as to free the wound coil 208 for axial movement.
  • air cylinders 176 and 326 are actuated to elevate the shafts 174 and 320 into engagement with the shafts 118 and 158 of the mandrel assembly in readiness for advancement of the conveyor assemblies.
  • air cylinder 164 is first energized to displace the guide brackets 96 one toward the other to free the coil 208a for axial movement, then air cylinder 304 is energized to drive the conveyor assemblies a predetermined distance. As illustrated in FIGURE 1, this predetermined distance corresponds conveniently to the center to center separation between two alternate U-shaped coil receiving elements on the conveyors, although it could as well be equal to the center to center distance between adjacent coil receiving elements.
  • coil 208d which is illustrated in FIGURE 1 at the end portion of the conveyors drops from the conveyors onto the accumulator 160 to the portion 163 thereof.
  • air cylinder 304 is maintained in the energized position while air cylinder 164 is actuated in the reverse direction to restore the guide brackets 96 to their original position.
  • air cylinders 176 and 326 are actuated to retract the shafts 174 and 320.
  • air cylinder 304 is retracted to its original position.
  • the coil winding machine With subsequent actuation of air cylinder 104 to position the flange members 102 into abutment with the guide brackets 96, the coil winding machine is in position for the winding of a new coil. Since the flier 24 is being maintained in an extreme left position, as viewed in FIG- URE 1, by the hydraulic piston 260, the start of the new coil in the proper coil receiving channel is insured.
  • the shaft 242 associated therewith is actuated downwardly and the shaft 246 also associated therewith is actuated upwardly to free the accumulated coils for manual or automatic removal from the accumulator 160.
  • the shaft 242 associated therewith is actuated downwardly and the shaft 246 also associated therewith is actuated upwardly to free the accumulated coils for manual or automatic removal from the accumulator 160.
  • the shaft 242 associated therewith is actuated downwardly and the shaft 246 also associated therewith is actuated upwardly to free the accumulated coils for manual or automatic removal from the accumulator 160.
  • the housings 72 associated with the conveyors 74 and 76 are adjustably secured to the body member 68 such that the separation therebetween may be adjusted by rotation of the shaft 73 which threadedly engages the housings 72.
  • some variation in the size of the coils wound by the coil winding machine may be obtained.
  • it is ap parent that a wide variation in the number of turns per coil is possible with the present apparatus.
  • the shape of the coil which is wound by the present coil winding machine remains substantially constant and is not subject to variation. It is nonetheless deemed within the scope of this invention to construct modified coil winding machines capable of winding coils of diflerent shapes, but utilizing the dual conveyor structure and associated mechanisms of the present coil winding machine.
  • the coil winding machine of this invention is not limited to the production of coils having the shape illustrated in FIGURE 7 of the drawings.
  • a coil winding machine including a rotatable flier for winding coils and a receiving mandrel upon which the coils are wound
  • said mandrel comprises a pair of endless conveyors arranged in parallel relation, a plurality of coil receiving elements carried by said conveyors, pairs of coil receiving elements, one carried by each conveyor, co-operating to provide a coil receiving channel for a single coil, and means for driving said conveyors so as to present successive pairs of coil receiving elements to said flier.
  • a mandrel assembly for receiving a coil, a supply assembly for delivering wire for winding into a coil on the mandrel assembly and means for rotating one of said assemblies relative to the other to wind a coil in a plane normal to the axis of relative rotation
  • a mandrel assembly including a pair of coil receiving elements provided with channels parallel to the plane in which the coil is wound and co-operating, when in position to receive a coil, to provide a coil form about which a single coil is wound, and means for sequentially moving said coil receiving elements into the plane in which the coils are wound then out of said plane in a direction normal thereto and through 360 of rotation to discharge the coil wound thereon and to return the coil receiving elements to the plane in which the coils are wound.
  • a mandrel assembly for receiving a coil, a supply assembly for delivering wire for winding into a coil on the mandrel assembly and means for rotating one of said assemblies relative to the other to wind a coil in a plane normal to the axis of relative rotation
  • a mandrel assembly including a pair of coil receiving elements provided with channels parallel to the plane in which the coil is wound and co-operating, when in position to receive a coil, to provide a coil receiving form about which a single coil is wound, and conveyor means for sequentially moving said coil receiving elements into the plane in which the coils are wound, then out of said plane in a direction normal thereto and oppositely through 368 of rotation one toward the other to discharge the coil wound thereon and to return the coil receiving elements to the plane in which the coils are wound.
  • the form according to claim 7 including a pair of flanged guide brackets, there being one mounted adjacent each side of said stacked conveyors, a pair of flange members engaging said guide brackets and co-operating with the flanges thereof to form coil receiving channels at the sides of said stacked conveyors, said coil receiving channels and said coil receiving elements co-operating to provide a coil receiving form, and means for withdrawing said flange members from the coil receiving form to permit the formed coils to be carried by said conveyors out of the plane in which they are formed.
  • a coil Winding machine including a rotatable flier for winding a coil and means providing a receiving form for said coils, said means including a pair of endless conveyors stacked in parallel relation one above the other, a plurality of coil receiving elements mounted on said conveyors, said elements being arranged in spaced pairs, one element of each pair in each conveyor, and aligned in spaced planes parallel to the plane of rotation of said flier, a pair of spaced parallel guide brackets mounted adjacent each side of said stacked conveyors and co-operating with an aligned pair of coil receiving elements carried thereby to provide a coil form in the plane of rotation of said flier, means for synchronously driving said conveyors to advance said aligned pairs of coil receiving elements through the plane in which the coils are formed, and means co-ordinated with said drive means for dis placing said spaced guide brackets one toward the other so as to release the formed coils from said guide brackets when the conveyors are in motion.
  • a coil winding machine including a rotatable fiier for winding a coil, a coil receiving form including a pair of endless conveyors stacked in parallel one opposite the other, a plurality of coil receiving elements carried by said conveyors, said elements being arranged in pairs, one element of each pair being carried by each conveyor, and aligned in spaced planes parallel to the plane of rotation of said flier to provide a receiving form for a single coil, and means for driving said conveyors in synchronism so as to advance said pairs of coil receiving elements through the plane of rotation of said flier.
  • said conveyors each comprise an endless chain mounted on spaced sprocket members, and the coil receiving elements carried thereby each comprise an L- shaped member seated upon and secured to said chain, and a planar member pivotally secured to said L-shaped member and co-operating therewith to provide a U-shaped coil receiving element.
  • a coil Winding machine including a rotatable flier for intermittently Winding successive coils, a coil receiver comprising a pair of endless conveyors stacked one above the other extending parallel to and distributed about the axis of rotation of said flier, a plurality of coil receiving elements carried by said conveyors, the coil receiving elements on one conveyor being paired with those on the other conveyor with the pairs of coil receiving elements being aligned in spaced planes normal to the axis of rotation of said flier and co-operating to receive coils wound thereby, and means for driving said conveyors so as to move said pairs of coil receiving elements successively into position in the plane of rotation of said flier to receive the coils wound thereby, said driving means including a pair of drive sprockets and associated gears, one sprocket engaging each conveyor, a pair of Worms aligned coaxially and meshing with said gears for rotating said sprockets, a driven shaft interconnecting said worms to simultaneously drive said conveyors,
  • a coil Winding machine including a rotatable flier for winding a coil, a mandrel assembly providing coil forms for receiving the coils as they are wound, said mandrel assembly comprising a pair of like elongate endless conveyors, each conveyor comprising an endless chain mounted upon spaced sprockets so as to have parallel straight side portions and rounded end portions, said conveyors being disposed in parallel relation on opposite sides of the axis of rotation of said flier so as to have adjacent and co-extensive side portions, a plurality of coil receiving elements carried by said conveyors, the coil receiving elements of said conveyors co-operating in pairs to provide a plurality of receiving forms for single coils wound about both said conveyors in a plane normal to the axis of rotation of said flier, means for intermittently driving said conveyors oppositely in synchronism whereby said coil receiving elements are advanced in a stepwise manner parallel to the axis of rotation of said flier to receive coils and thence toward the rounded end
  • a coil winding machine comprising a mandrel assembly for receiving a coil, a supply assembly for delivering wire for winding into a coil on the mandrel assembly, said mandrel assembly and said supply assembly being rotatable one relative to the other about a common axis, means restraining rotation of said mandrel assembly, means for rotating said supply assembly relative to said mandrel assembly to wind a coil on said mandrel assembly in a plane normal to said common axis, said mandrel assembly including means providing a coil form for receiving the wound coil and means for discharging the wound coil from the coil form, the means restraining rotation of said mandrel assembly including an accumulator arm attached to said mandrel assembly for receiving and accumulating the coils discharged thereby, a pair of reciprocally mounted spindles for engaging said accumulator arm to restrain rotation thereof, said spindles engaging said accumulator arm in spaced relation, and means for oppositely actuating said spindles reciprocally such that first one then
  • a coil winding machine comprising a mandrel assembly for receiving a coil, a supply assembly for delivering wire for winding into a coil on the mandrel assembly, said mandrel assembly and said supply assembly being rotatable one relative to another about a common axis of rotation, said mandrel assembly including a rotatably mounted body member, a pair of housings slidably engaging said body member in spaced relation, means adjustably securing said housings to said body member whereby the separation between said housings is variable, a pair of conveyors arranged in spaced parallel co-extensive relation extending parallel to and on opposite sides of said axis of rotation, there being one conveyor supported by each said housing, each said housing supporting a pair of side rails enclosing the sides of said conveyors, each said conveyor comprising an elongate continuous chain and sprocket assembly and a plurality of U-shaped coil receiving elements supported by said chain, the coil receiving elements of one conveyor being aligned in pairs with the coil receiving elements
  • each said coil receiving element comprises an L-shaped member secured to said chain and a planar member pivotally secured to the L-shaped member and co-operating therewith to provide a U-shaped member, said planar members pivoting to assist the release of the coils from the coil receiving elements as these elements move one toward another at the ends of said conveyors.
  • the coil Winding machine including accumulator means engaging the side rails supported by one of said housings at one end of the associated conveyor for restraining rotation of said mandrel assembly and for receiving the coils discharged thereby, said supply assembly including a flier for Winding a coil upon said mandrel assembly.

Description

May 1, 1962 H. w. MOORE COIL WINDING MACHINE 3 Sheets-Sheet 1 Filed Oct. 17, 1957 INVENTOR. ##EE/ l/l/ M0025 Filed Oct. 17, 1957 3 Sheets-Sheet 2 INVENTOR. H43? Y W. M 0025 BY 5 1% w JIE. 3
H/S HTTOEA/EKS" V May 1, 1962 H. w. MOORE COIL WINDING MACHINE 3 Sheets-Sheet 3 Filed Oct. 17 1957 INVENTOR. HflEEV M. M0056 United States Patent ()fl ice 3,032,073 COEL WINDING MACHINE Harry W. Moore, 5051 Kittridge Road, Dayton, Ohio Filed Oct. 17, 1957, Ser. No. 690,838 14 Claims. (Cl. 140-922) This invention relates to a coil winding machine for winding coils upon a mandrel element and moreparticularly to an improved mandrel assembly for recelvmg coils as they are Wound and for subsequently discharging the coils onto an accumulator, although the invention is not necessarily so limited.
An object of this invention is to provide an improved coil winding machine wherein coils wound by a flier onto a mandrel assembly are retained by the mandrel assembly and advanced progressively to an accumulator onto which the coils are discharged.
Another object of this invention is to provide an improved mandrel assembly including a pair of juxtaposed conveyors carrying a plurality of coil receiving elements which co-operate in pairs to provide coil receiving forms, the construction and arrangement being such that the coil receiving forms are advanced by said conveyors first into position to receive a coil and then into position to discharge the completed coil.
A further object of this invention is to provide drive means for the aforesaid mandrel assembly and means for synchronizing the operation of said drive means with the operation of the coil winding mechanism.
Still another object of this invention is to provide an mproved mechanism for wrapping a tape about the coils formed upon the mandrel assembly as these coils are advanced from the point of formation to the point of discharge.
Still a further object of this invention is to provide an accumulator for receiving coils discharged by the mandrel assembly, which accumulator functions to accumulate a given number of coils and then to release these coils for removal from the coil winding machine.
Still a further object of this invention is to provide, in a coil winding machine, an improved flier assembly for winding the coils upon a mandrel receiver and improved means for layering the coils onto the receiver.
Other objects and advantages reside in the construction of parts, the combination thereof, the method of manufacture and the mode of operation, as will become more apparent from the following description.
In the drawings, FIGURE 1 is a side elevational view of the coil winding machine of this invention with some parts broken away and others illustrated in sectional detail to reveal the interior construction thereof.
FIGURE 2 is a fragmentary top plan view of a portion of the coil winding machine of FIGURE 1.
FIGURE 3 is a sectional view taken substantially along the line 33 of FIGURE 2.
FIGURE 4 is an enlarged fragmentary perspective view of a drive mechanism for the mandrel assembly of the coil winding machine of FIGURE 1 with portions broken away.
FIGURE 5 is an enlarged fragmentary plan view of an assembly for placing a strip of adhesive tape about the coils formed by the coil winding machine of FIG- URE 1.
FiGURE 6 is a fragmentary plan view drawn to reduced scale showing the assembly of FIGURE 5 in an operative position.
FIGURE 7 is an enlarged perspective view of a coil wound by the coil winding machine of FIGURE 1.
Referring to the drawings in greater detail, there is shown in FIGURE 1 a conventional drive assembly 10 for operating the coil winding machine. The drive assembly 10 which includes an electric motor or the like, not shown, for imparting rotation to a shaft 12 also includes conventional clutch and brake mechanisms for stopping and starting the rotation of the shaft 12 at predetermined intervals, as will be described in greater detail hereinafter. The drive assembly Ill derives support from a bed or platform 114, but is broken away therefrom in the drawings for convenience.
Fixedly secured to shaft 12 by suitable bolts 14 is a tubular shaft 16 co-axial with the axis of rotation of the shaft 12. The shaft 16 is partitioned by a wall 18 extending normal to the geometric axis thereof. Telescoped on the tubular shaft 16 and splined thereto by means of ribs 20 is a second tubular shaft 22. The arrangement is such that the shaft 22 rotates with the shaft 16 but is slidable axially thereon. An L-shaped flier element 24 is fixedly secured to the shaft 22 and counterbalanced for rotation by a suitable weight 26. Wire, illustrated at 28, is supplied to the flier 24 as follows.
Mounted within shaft 16 on one side of the partition 18 therein, is a cylindrical body 30 recessed to receive a pulley 32. Body 36 is splined to shaft 16 with a rib 34.
so as to rotate therewith. Wire 28 is fed to the pulley 32 through central borings provided in the shaft 12 and the cylindrical body 30. The shaft 16 and the shaft 22 telescoped thereon are provided with aligned apertures 36 and 3S permitting the wire 28 to pass from pulley 32 to a pulley 46 mounted for rotation on the flier 24. The aperture 38 is large enough to permit axial movement of the shaft 22 without interference with the wire 28. From the pulley 46 wire 28 passes to conventionally arranged pulleys 42 and 48 journalled in a supporting element 44 fixedly attached to the flier 24 by means of an arm 46. The wire leaving pulley 48 is wound onto a mandrel assembly as will be described in greater detail in the following. The wire is tensioned at its source by conventional means not shown.
The mandrel assembly upon which the coils are wound by the flier 24 is supported as follows. Journalled for rotation upon bearings 56a and 5% within the outer end of shaft 16 is a shaft 52 for supporting the mandrel assembly. Between the bearings 50a and 5% are concentric cylindrical sleeves 60 and 62 which maintain these bearings in fixed spaced relation. A portion 53 of the shaft 52 is enlarged and journalled within a bearing support member 54 fixedly secured to the shaft 16 by suitable bolts 56. The end of the shaft 52 projecting into the shaft 16 is threaded to receive a nut 58. The nut 58 is tightened upon a lock washer 59, against bearing 50a so that bearings Stla and Sill) along with the sleeves 6t and 62 are compressed in a tight sandwich against the shoulder formed by the enlarged portion 53 of the shaft 52. Bearing member 54 compresses this: sandwich between itself and a shoulder 64 formed within the tubular shaft 16.
This bearing assembly supports the shaft 52 for independent rotation relative to the flier 24 and also supports the shaft so that the rather large weight of the mandrel assembly can be supported by the end of the shaft 52 projecting outside the tubular shaft 16.
Shaft 52 terminates in an enlarged disc portion 66 to which is secured a body member 68 which supports the mandrel assembly. Body member 68 is oriented in a plane normal to the axis of rotation of the flier 24 and is of such a dimension that the flier may rotate thereabout.
As best illustrated in FIGURE 2, body member 68 is provided with a dovetail slot 79 which slidably receives like housings 72a and 72b supporting conveyor assemblies designated by the reference numerals 74 and 76. These housings 72, which are mounted one above the other, threadedly engage a shaft 73 journalled within body.
Patented May 1, 1962.
member 68. Shaft 73 is oppositely threaded for the housings 72a and 72b so that the vertical separation between these housing may be adjusted by manual rotation of this shaft.
Each housing 72 includes a pair of side rails 78 which form the sides of the conveyor assemblies 74 and 76. Within each housing 72 is a horizontal shaft 80 supporting, as best seen in FIGURE 3, a sprocket 82. As illustrated in FIGURE 1, a similar shaft 84 supports a similar sprocket, not shown, on the outwardly projecting ends of the side rails 78. The shafts 84 are journalled in journals 85 adjustably secured to the side rails '78 by screws 87. The sprockets co-operate to support conveyor chains illustrated in FIGURE 3. These chains, which resemble ordinary bicycle chains, comprise a series of rollers 86 supported in spaced relation by links 89. The journals 85 are adjustable to enable proper tensioning of these conveyor chains. These chains support coil receiving elements best illustrated in FIGURES 1 and 5. Each coil receiving element comprises an L-shaped member 88 having a planar member 92 pivotally secured thereto so as to form a U-shaped element. As illustrated in FIG- URE 3, each member 88 is provided with spaced flanges 93 at the base thereof straddling the supporting conveyor chain. These flanges are fixedly joined to the links 89 of the chain between each pair of rollers 86. As illustrated in FIGURE 1, the U-shaped coil receiving elements are carried in tightly spaced relation by the conveyor chains.
As will be described hereinafter, the conveyor chains are driven in synchronism by a suitable driving assembly and are so arranged that the coil receiving elements on the two chains are aligned in vertically spaced relation. Thus, coil receiving elements on the upper portion of the upper conveyor 74 are aligned vertically with the coil receiving elements on the lower portion of the lower con veyor 76 and co-operate therewith to provide coil receiving channels on the upper and lower sides of the conveyor assemblies. The coils are wound into these aligned channels and encircle both conveyors as illustrated in FIGURES 1 and 3. Successively wound coils designated 208a, 208b, 208e, 208d, and 2082 are illustrated.
Channels for receiving the coils at the sides of the conveyor assemblies as the coils are wound are provided as follows. Adjustably secured to the sides of the conveyor housings 72 by means of screws 94 are guide brackets 96, there being one guide bracket on each side of each housing 72. As will be described subsequently, these brackets 96 may be moved vertically one toward the other and one away from the other by virtue of their slidable connection with the housings 72. Portions 98 of these brackets 96 extend parallel to the side rails 78. Each bracket 96 also includes a laterally outwardly projecting flange portion 100 which functions as a side rail for a coil receiving channel.
Co-operating with these flanges 100 and in spaced relation thereto are flange members 102 reciprocally positioned by means of air cylinders 104 as follows. The flange members 102 are secured to vertical brackets 106 by means of screws 108 and slide plates 109. The screws 108 penetrate vertical slots 111 within the brackets 106 to provide for vertical adjustment of the flange members 102. The brackets 106 are mounted at their ends for sliding horizontal movement on parallel rods 110. These rods 110 are anchored in U-shaped support members 112 which in turn are secured to the base platform 114 by suitable arms 116. As best illustrated in FIGURE 3, pairs of flange members 102 are thus supported on each side of the aligned conveyor assemblies 74 and 76. The brackets 106 are each actuated horizontally by the plunger 117 of an associated air cylinder 104, there being one air cylinder on each side of the aligned conveyors supported by the support members 112.
The construction is such that the flange members 102 maybe actuated inwardly into abutment with the guide brackets 96 to provide a channel for receiving a coil as it is wound and they may be actuated away from the guide brackets 96 to enable the coil to be moved out of and away from the plane in which it is wound.
Coils are Wound into the channel thus formed in the mandrel assembly by rotating the flier 24 relative to the mandrel assembly. As the flier 24 rotates, a mechanism is used to layer the coil within the coil receiving channel. With reference to FIGURE 1, this mechanism includes a hydraulic piston 260 engaging a yoke member 262, which is pivotally mounted to a bracket 266 fixedly secured to the housing for the drive mechanism 10. The yoke 262 which is bifurcated engages the opposite sides of a cylindrical member 270 rotatably secured to the tubular shaft 22 by means of a bearing 272, the latter being secured by snap rings 274. The construction of this layering assembly is such that the cylindrical member 270 is free to rotate on the shaft 22 but is restrained from axial movement thereon.
The operation of this layering mechanism is as follows. As the flier 24 is rotated by the drive assembly 10, the hydraulic piston 260 is repeatedly actuated by a hydraulic supply, not shown, to reciprocate the yoke 262. The yoke 262 in turn reciprocates the cylindrical member 270 and in turn the tubular shaft 22. The tubular shaft 22 imparts reciprocatory movement to the flier 24 so as to layer the coils within the coil receiving elements as the flier 24 rotates. It is to be understood that the relative axial and rotary movements of the flier 24 will be determined largely by the diameter of the wire which is to be layered within the coil receiving channel and the width of the coil receiving channel.
The completed coils are carried on the conveyors out of the plane in which they are wound by the following mechanism. Referring to FIGURE 1, an actuator shaft 118 is journalled for rotary motion in a bracket 120 secured to the body member 68. T he actuator shaft 118 passes vertically through each of the housings 72a and 72b. Within each of the housings 72 a worm 122 is fixedly attached to the actuator shaft. The Worms 122 in the housings 72 are threaded oppositely. These worms 122 each engage a gear 124 splined to the shaft journalled within the associated housing 72. Through rotary motion of the worms 122, and the sprockets 82 thereby, the conveyor chains are caused to rotate.
The shaft 118 is rotated by the mechanism illustrated in FIGURE 4. This mechanism which is housed in a housing 300 under the platform 114 includes a rack 302 which is actuated reciprocally by an air cylinder 304. The rack 302 engages a gear 306 which is connected through a shaft 307 to a gear 308 which drives a rack 310 reciprocally within the housing in a direction normal to the direction of movement of rack 302. The rack 310 is stabilized by rollers 312 and the rack 302 is stabilized by a roller 314. The rack 310 reciprocates between housings 315 attached to housing 300 rotating a pinion 316 which is splined to a tubular shaft 318. The aperture within the tubular shaft 318 has a hexagonal cross-section. Slidably mounted within the shaft 318 is a hexagonal shaft 320 terminating in an adapter portion 322 provided with a slot 324. The shaft 320 is adapted to be actuated vertically by an air cylinder 326. Upon vertical upward actuation of the shaft 320, the adapter portion 322 is carried into engagement with a flattened end portion 328 of the shaft 118.
The operation of this mechanism is as follows. Initially when it is desired to advance the conveyors 74 and 76 the air cylinder 326 is energized. This moves the shaft 320 upwardly to bring the adapter portion thereof into engagement with the shaft 118. Subsequently, air cylinder 304 is energized to cause rotation of the shaft 118. This advances the conveyors a predetermined distance. The air cylinder 304 is then deenergized stopping rotation of the conveyors and subsequently the air cylinder 326 is energized to retract the shaft 320. With the shaft 320 retracted, the flier 24 is free to rotate about the body member 68. After the shaft 325) is retracted, air cylinder 3%4 is reversed to reset the conveyor drive mechanism. Suitable stops, not shown, limit the movement of air cylinder 304 such that the advancement of the conveyor chains may be accurately reproduced.
Due to the opposite threading of the worms 122, the conveyors advance such that the upper surface of the upper conveyor moves in the same direction as the lower surface of the lower conveyor. With reference to FIG- URE 1, this enables the coils formed upon the conveyors to be advanced to the right toward the outwardly projecting rounded ends of the conveyors.
Before it is possible to move the coils to the right, as viewed in FIGURE 1, after their formation it is first necessary to retract the flange members 102 and to free the coils from compressive engagement with the guide brackets 96. Air cylinder 104 is used to retract the flange members 1112. The following mechanism relieves the compressive engagement between the coils and the guide brackets 8'6. Referring to FIGURE 1, each of the guide brackets 96 is provided on its left hand margin with a rack engaging a gear 152 mounted upon a horizontal shaft 154. The gear 152 threadedly engages a worm 156, there being two gears 152 and one worm in each of the housings 72a and 72]), with the worms 156 in these two housings threaded oppositely. These worms 156 are splined to a shaft 158, which rises vertically from the bracket 129 of the body member 68 parallel to the shaft 118. The shaft 158 terminates in a flattened end portion 162 similar to the end portion 328 of the shaft 118.
The shaft 158 is rotated by the following mechanism. Referring to FIGURE 4, this mechanism includes an air cylinder 164 adapted to actuate a rack 166 reciprocally within the housing 3%. The rack 166, stabilized by rollers 168, engages and rotates a pinion 1'70 splined to a tubular shaft 172. The shaft 172 is provided with a hexagonal aperture slidably receiving a hexagonal shaft 174. The shaft 174 is reciprocated vertically by an air cylinder 176. The shaft 174 terminates in an adapter portion 173 provided with a slot 13 analogous to the adapter portion 322 of the shaft 320.
The mechanism operates as follows. Upon energizetion of the air cylinder 176, the shaft 174- carrying the adapter portion 178 is actuated vertically upwardly to bring the adapter portion 178 into engagement with the flattened end portion 162 of the shaft 1153. Upon subsequent energization of the air cylinder 164, the rack 166 is driven so as to rotate the shaft 174, causing rotation of the shaft 158. Upon rotation of the shaft 158, the guide brackets 96 are driven one toward the other. As is most apparent in FIGURE 3, this movement of the guide brackets 96 will release the coils formed thereon from compressive engagement therewith. This enables the coils to be moved by the mechanism described hereinbefore. When the coils have been advanced the predetermined distance, the air cylinder 164 is retracted. This replaces the guide brackets 96 to their original position. Subsequently, the air cylinder 176 is energized to retract the shaft 174. Clearly, the advancement of the conveyors and the adjustment of the distance between the guide brackets 96 must be accomplished when the flier 24 is stopped.
After the conveyors have moved the completed coils to the right as viewed in FIGURE 1, each of these coils is wrapped with a tape by the following mechanism. Referring to FIGURE 5, a tape 1% is supplied by a reel 192. The tape 1% passes through a series of three pinching rollers 194, 1% and 198. The roller 1% is a driven roller which serves to draw the tape 19% from the reel advancing it under a roller 2% mounted within a housing 2114 through a slotted guide element 206 to a position overlying the coil which is to receive the tape. This coil is designated by the reference numeral 208C.
With the tape 1% in this position, an air cylinder 210 is energized. The air cylinder 21f! reciprocally moves a bracket 212. The bracket 212 carries a knife member 218 slidably mounted in a guide 214 secured to a supporting frame 216. Upon actuation of the air cylinder 21th, the knife is moved downwardly as viewed in FIG- URE 5, to sever the length 1900 of the tape overlying the coil 2118c. This operation is performed in its entirety during the time the flier is winding a new coil.
The bracket 212 also carries a journal member 220 supporting a shaft 222. Mounted on the shaft 222 are a pair of jaw members 22 -1 and 226 each provided with a tapered tooth 228. Spring means 227 bias the teeth 22% into compressive engagement. Upon actuation of the air cylinder 210, the jaw members 224 and 226 are urged downwardly as viewed in FIGURE 5 through the slotted guide element 2% whereupon they advance upon the strip of tape 1911a, which is simultaneously being severed. As the jaw members 224 and 226 strike the coil 21180 which is to receive the tape 1911a the teeth 228 carried thereby cam against the coil to spread apart, then pass around the coil, then clamp together again to wrap the tape 19% about the coil. As illustrated in FIGURE 3, the side rail 78 behind the portion of the coil 2118c which is to be taped is notched at 22? to provide clearance for the jaw teeth 228 behind the coil. Upon subsequent retraction of the air cylinder 210, the teeth 228 cam back over the coil and withdraw from the coil. This completes the taping operation. FIGURE 6 illustrates the teeth 228 in the position in which they are cammed over the coil 2118c. FIGURE 7 illustrates a completed and taped coil 298, with strands which interconnect the coils cut off.
Referring to FIGURE 1, the completed coils are discharged from the conveyors as follows. As the conveyors are advanced progressively to carry the coils thereon to the right end as viewed in FIGURE 1, the U- shaped coil receiving elements carrying the coils are caused to round the end portions of the conveyors. As they round these end portions, the coil receiving elements carried by the separate conveyors approach one another. As illustrated in FIGURE 1, the planar members 12 of the coil receiving elements of the lower conveyor 74 pivot away under the influence of gravity from the associated L-shaped members 88 as these coil receiving elements round the end of the conveyor. This enables the completed coils to slip out of the coil receiving elements and drop onto an accumulator labeled 160.
The accumulator has a downwardly descending sloped portion 161 leading to a second downwardly descending sloped portion 163 of lesser slope. The completed coils slide downwardly on the accumulator onto the portion 163 and there are stopped by a flange 246 co-operating with a vertical shaft 242. A coil 21132 is illustrated substantially at the end of the accumulator. It is to be understood, of course, that all coils are joined by a connecting strand, not shown, due to the fact that the coils are wound from a single interrupted strand. Interconnected coils which would ordinarily be found between the coils 208d and Ztlde in FIGURE 1 have been eliminated from the drawing to avoid confusion of detail. The shaft 242, which is seated in a hollow portion 244 of the accumulator 160, is mounted for vertical reciprocal motion in the platform 114 and is adapted to be driven vertically by an air cylinder, not shown.
When through the successive winding of a number of coils, several coils have been accumulated on the accumulator 161 and it is desired to remove these coils from the accumulator, a second shaft 246 mounted for vertical reciprocal motion in the platform 1.14 is actuated vertically upwardly by an air cylinder not shown. The shaft 246 rises upwardly in spaced relation to the shaft 242 to engage a hollow portion 248 of the accumulator the arrangement being such that the shafts 242 and 245 engage the accumulator in spaced relation on opposite ends of the sloped portion 163 of the accumulator. The accumulated coils are therefore situated between the shafts 246 and 242.
With the shaft 246 elevated, the air cylinder governing the operation of the shaft 242 is actuated to retract the shaft 242. This enables the coils accumulated on the accumulator 169 to be out free and removed either manually or automatically by apparatus not shown. When these coils have been removed, the shaft 242 is returned to its position in engagement with the accumulator 160 and the shaft 246 is withdrawn to enable the accumulation of additional coils on the portion 163 of the accumulator 160.
It is to be noted that in the construction of this coil winding machine, the mandrel assembly comprising the conveyors 74 and 76 is rotatably mounted relative to the flier 24. The shafts 242 and 246 supporting the accumulator 160 co-operate to prevent rotation of the mandrel assembly. To this end the accumulator 164) is fixedly attached to the side members 78 of the upper conveyor '74.
For purposes of clarity of description, the complete operating cycle of the coil winding machine is reviewed in the following. Referring to FIGURE 1, the coil winding machine is illustrated at the termination of the winding of coil 2M0. In winding coil 2tl8a, the air cylinder 164 was actuated to bring the flange members 102 into engagement with the guide brackets 96. Then the flier 24 was rotated by the drive mechanism while simultaneously the hydraulic piston 269 was actuated reciprocally to layer the coil within the coil receiving channel. At some time during the winding of coil 208a, drive wheel 196 associated with the tape dispensing mechanism was actuated to position a piece of tape 130a over the previously wound coil 2080. Following this, air cylinder 210 was actuated to Wrap the strip of tape 196a about the coil 298a and then retracted to complete the taping operation. After a predetermined number of turns were wound in the coil 208a the flier was stopped in the position illustrated in FIGURE 1.
With stoppage of the flier after coil 268a is wound, the hydraulic cylinder 266 is actuated to shift the flier 24 to the extreme left as viewed in FIGURE 1. Next air cylinder 164 is actuated to retract the flange members 102 from the guide brackets 96 so as to free the wound coil 208 for axial movement. Simultaneously, air cylinders 176 and 326 are actuated to elevate the shafts 174 and 320 into engagement with the shafts 118 and 158 of the mandrel assembly in readiness for advancement of the conveyor assemblies. Following this, air cylinder 164 is first energized to displace the guide brackets 96 one toward the other to free the coil 208a for axial movement, then air cylinder 304 is energized to drive the conveyor assemblies a predetermined distance. As illustrated in FIGURE 1, this predetermined distance corresponds conveniently to the center to center separation between two alternate U-shaped coil receiving elements on the conveyors, although it could as well be equal to the center to center distance between adjacent coil receiving elements.
As the conveyors advance the predetermined distance, coil 208d which is illustrated in FIGURE 1 at the end portion of the conveyors drops from the conveyors onto the accumulator 160 to the portion 163 thereof. With the conveyors advanced the predetermined distance, air cylinder 304 is maintained in the energized position while air cylinder 164 is actuated in the reverse direction to restore the guide brackets 96 to their original position. Then air cylinders 176 and 326 are actuated to retract the shafts 174 and 320. Finally air cylinder 304 is retracted to its original position.
With subsequent actuation of air cylinder 104 to position the flange members 102 into abutment with the guide brackets 96, the coil winding machine is in position for the winding of a new coil. Since the flier 24 is being maintained in an extreme left position, as viewed in FIG- URE 1, by the hydraulic piston 260, the start of the new coil in the proper coil receiving channel is insured.
After any desired number of coils have been wound and accumulated on the portion 163 of the accumulator 160, the shaft 242 associated therewith is actuated downwardly and the shaft 246 also associated therewith is actuated upwardly to free the accumulated coils for manual or automatic removal from the accumulator 160. Clearly, in order to remove the coils thus accumulated it will be necessary to sever the connecting strand between the last accumulated coil which is to be removed and the coils yet remaining on the conveyor assembly.
As was noted hereinbefore, the housings 72 associated with the conveyors 74 and 76 are adjustably secured to the body member 68 such that the separation therebetween may be adjusted by rotation of the shaft 73 which threadedly engages the housings 72. By this means, some variation in the size of the coils wound by the coil winding machine may be obtained. Also, it is ap parent that a wide variation in the number of turns per coil is possible with the present apparatus. However, the shape of the coil which is wound by the present coil winding machine remains substantially constant and is not subject to variation. It is nonetheless deemed within the scope of this invention to construct modified coil winding machines capable of winding coils of diflerent shapes, but utilizing the dual conveyor structure and associated mechanisms of the present coil winding machine. Thus, the coil winding machine of this invention is not limited to the production of coils having the shape illustrated in FIGURE 7 of the drawings.
Although the preferred embodiment of the device has been described, it will be understood that within the purview of this invention various changes may be made in the form, details, proportion and arrangement of parts, the combination thereof and mode of operation, which generally stated consist in a device capable of carrying out the objects set forth, as disclosed and defined in the appended claims.
Having thus described my invention, I claim:
1. In a coil winding machine including a rotatable flier for winding coils and a receiving mandrel upon which the coils are wound, the improvement wherein said mandrel comprises a pair of endless conveyors arranged in parallel relation, a plurality of coil receiving elements carried by said conveyors, pairs of coil receiving elements, one carried by each conveyor, co-operating to provide a coil receiving channel for a single coil, and means for driving said conveyors so as to present successive pairs of coil receiving elements to said flier.
2. In a coil winding machine of the type having a mandrel assembly for receiving a coil, a supply assembly for delivering wire for winding into a coil on the mandrel assembly and means for rotating one of said assemblies relative to the other to wind a coil in a plane normal to the axis of relative rotation, a mandrel assembly including a pair of coil receiving elements provided with channels parallel to the plane in which the coil is wound and co-operating, when in position to receive a coil, to provide a coil form about which a single coil is wound, and means for sequentially moving said coil receiving elements into the plane in which the coils are wound then out of said plane in a direction normal thereto and through 360 of rotation to discharge the coil wound thereon and to return the coil receiving elements to the plane in which the coils are wound.
3. In a coil winding machine of the type having a mandrel assembly for receiving a coil, a supply assembly for delivering wire for winding into a coil on the mandrel assembly and means for rotating one of said assemblies relative to the other to wind a coil in a plane normal to the axis of relative rotation, a mandrel assembly including a pair of coil receiving elements provided with channels parallel to the plane in which the coil is wound and co-operating, when in position to receive a coil, to provide a coil receiving form about which a single coil is wound, and conveyor means for sequentially moving said coil receiving elements into the plane in which the coils are wound, then out of said plane in a direction normal thereto and oppositely through 368 of rotation one toward the other to discharge the coil wound thereon and to return the coil receiving elements to the plane in which the coils are wound.
4. In a coil winding machine the form according to claim 7, including a pair of guide brackets fixedly mounted one adjacent each side of said stacked conveyors cooperating with said coil receiving elements to provide a coil receiving form, the construction and arrangement being such that said coils, upon movement of said conveyors, are removed from said guide brackets.
5. In a coil winding machine, the form according to claim 7, including a pair of flanged guide brackets, there being one mounted adjacent each side of said stacked conveyors, a pair of flange members engaging said guide brackets and co-operating with the flanges thereof to form coil receiving channels at the sides of said stacked conveyors, said coil receiving channels and said coil receiving elements co-operating to provide a coil receiving form, and means for withdrawing said flange members from the coil receiving form to permit the formed coils to be carried by said conveyors out of the plane in which they are formed.
6. A coil Winding machine including a rotatable flier for winding a coil and means providing a receiving form for said coils, said means including a pair of endless conveyors stacked in parallel relation one above the other, a plurality of coil receiving elements mounted on said conveyors, said elements being arranged in spaced pairs, one element of each pair in each conveyor, and aligned in spaced planes parallel to the plane of rotation of said flier, a pair of spaced parallel guide brackets mounted adjacent each side of said stacked conveyors and co-operating with an aligned pair of coil receiving elements carried thereby to provide a coil form in the plane of rotation of said flier, means for synchronously driving said conveyors to advance said aligned pairs of coil receiving elements through the plane in which the coils are formed, and means co-ordinated with said drive means for dis placing said spaced guide brackets one toward the other so as to release the formed coils from said guide brackets when the conveyors are in motion.
7. In a coil winding machine including a rotatable fiier for winding a coil, a coil receiving form including a pair of endless conveyors stacked in parallel one opposite the other, a plurality of coil receiving elements carried by said conveyors, said elements being arranged in pairs, one element of each pair being carried by each conveyor, and aligned in spaced planes parallel to the plane of rotation of said flier to provide a receiving form for a single coil, and means for driving said conveyors in synchronism so as to advance said pairs of coil receiving elements through the plane of rotation of said flier.
8. In a coil winding machine, the form according to claim 7, wherein said conveyors each comprise an endless chain mounted on spaced sprocket members, and the coil receiving elements carried thereby each comprise an L- shaped member seated upon and secured to said chain, and a planar member pivotally secured to said L-shaped member and co-operating therewith to provide a U-shaped coil receiving element.
9. In a coil Winding machine including a rotatable flier for intermittently Winding successive coils, a coil receiver comprising a pair of endless conveyors stacked one above the other extending parallel to and distributed about the axis of rotation of said flier, a plurality of coil receiving elements carried by said conveyors, the coil receiving elements on one conveyor being paired with those on the other conveyor with the pairs of coil receiving elements being aligned in spaced planes normal to the axis of rotation of said flier and co-operating to receive coils wound thereby, and means for driving said conveyors so as to move said pairs of coil receiving elements successively into position in the plane of rotation of said flier to receive the coils wound thereby, said driving means including a pair of drive sprockets and associated gears, one sprocket engaging each conveyor, a pair of Worms aligned coaxially and meshing with said gears for rotating said sprockets, a driven shaft interconnecting said worms to simultaneously drive said conveyors, a drive shaft projecting across the path of rotation of said flyer to engage said driven shaft, and means for disconnecting said drive shaft from said driven shaft to provide clearance for said flier when winding a coil.
10. In a coil Winding machine including a rotatable flier for winding a coil, a mandrel assembly providing coil forms for receiving the coils as they are wound, said mandrel assembly comprising a pair of like elongate endless conveyors, each conveyor comprising an endless chain mounted upon spaced sprockets so as to have parallel straight side portions and rounded end portions, said conveyors being disposed in parallel relation on opposite sides of the axis of rotation of said flier so as to have adjacent and co-extensive side portions, a plurality of coil receiving elements carried by said conveyors, the coil receiving elements of said conveyors co-operating in pairs to provide a plurality of receiving forms for single coils wound about both said conveyors in a plane normal to the axis of rotation of said flier, means for intermittently driving said conveyors oppositely in synchronism whereby said coil receiving elements are advanced in a stepwise manner parallel to the axis of rotation of said flier to receive coils and thence toward the rounded end portions of said conveyors, said coil receiving forms collapsing to release the coils carried thereby as the coil receiving elements thereof approach one another in advancing over the rounded end portions of said conveyors.
11. A coil winding machine comprising a mandrel assembly for receiving a coil, a supply assembly for delivering wire for winding into a coil on the mandrel assembly, said mandrel assembly and said supply assembly being rotatable one relative to the other about a common axis, means restraining rotation of said mandrel assembly, means for rotating said supply assembly relative to said mandrel assembly to wind a coil on said mandrel assembly in a plane normal to said common axis, said mandrel assembly including means providing a coil form for receiving the wound coil and means for discharging the wound coil from the coil form, the means restraining rotation of said mandrel assembly including an accumulator arm attached to said mandrel assembly for receiving and accumulating the coils discharged thereby, a pair of reciprocally mounted spindles for engaging said accumulator arm to restrain rotation thereof, said spindles engaging said accumulator arm in spaced relation, and means for oppositely actuating said spindles reciprocally such that first one then the other engages said accumulator arm, the construction and arrangement being such that coils are accumulated on said accumulator arm while one spindle engages said accumulator arm and are removable from said accumulator arm while the other spindle engages said accumulator arm.
12. A coil winding machine comprising a mandrel assembly for receiving a coil, a supply assembly for delivering wire for winding into a coil on the mandrel assembly, said mandrel assembly and said supply assembly being rotatable one relative to another about a common axis of rotation, said mandrel assembly including a rotatably mounted body member, a pair of housings slidably engaging said body member in spaced relation, means adjustably securing said housings to said body member whereby the separation between said housings is variable, a pair of conveyors arranged in spaced parallel co-extensive relation extending parallel to and on opposite sides of said axis of rotation, there being one conveyor supported by each said housing, each said housing supporting a pair of side rails enclosing the sides of said conveyors, each said conveyor comprising an elongate continuous chain and sprocket assembly and a plurality of U-shaped coil receiving elements supported by said chain, the coil receiving elements of one conveyor being aligned in pairs with the coil receiving elements of the other conveyor in a plane normal to said axis of rotation and co-operating to provide a coil receiving form, means for rotating said mandrel and supply assemblies one relative to the other to Wind a coil in a pair of said aligned coil receiving elements, and means for actuating said chain and sprocket assemblies of said conveyors in synchronism to advance the coil receiving elements and the coil supported thereby out of the plane in which the coil is Wound and to position a second pair of aligned coil receiving elements in said plane, said pairs of coil receiving elements upon repeated advancement of said conveyors, discharging the coils carried thereby as they move one to Ward another at the ends of said conveyors.
13. The coil Winding machine according to claim 12, wherein each said coil receiving element comprises an L-shaped member secured to said chain and a planar member pivotally secured to the L-shaped member and co-operating therewith to provide a U-shaped member, said planar members pivoting to assist the release of the coils from the coil receiving elements as these elements move one toward another at the ends of said conveyors.
14. The coil Winding machine according to claim 12, including accumulator means engaging the side rails supported by one of said housings at one end of the associated conveyor for restraining rotation of said mandrel assembly and for receiving the coils discharged thereby, said supply assembly including a flier for Winding a coil upon said mandrel assembly.
References Cited in the file of this patent UNITED STATES PATENTS 946,531 Beech Jan. 18, 1910 1,837,840 Slusher Dec. 22, 1931 2,046,883 Robbins July 7, 1936 2,246,608 Taylor et al. June 24, 1941 2,268,866 Furness Jan. 6, 1942 2,424,307 Dunbar July 22, 1947 2,445,109 Ferguson July 13, 1948 2,453,366 Furness Nov. 9, 1948 2,527,662 Stevens Oct. 31, 1950 2,624,374 Burge et al. Jan. 6, 1953 2,681,187 Zettelmeyer June 15, 1954 2,700,514 Whittum Jan. 25, 1955 2,705,978 Caldwell Apr. 12, 1955 2,724,415 Orth Nov. 22, 1955 2,889,610 Buddecke June 9, 1959 FOREIGN PATENTS 244,887 Great Britain Dec. 31, 1925
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1280193B (en) * 1964-10-03 1968-10-17 Schloemann Ag Coiler system for hot-rolled wire
DE1294321B (en) * 1966-02-17 1969-05-08 Schloemann Ag Coiler system for hot-rolled wire
US3782424A (en) * 1972-09-22 1974-01-01 Essex International Inc Reversible cast control device for flyer winder
US3793864A (en) * 1971-11-15 1974-02-26 Pirelli Waveguide winding machine
US5141032A (en) * 1987-12-08 1992-08-25 National-Standard Company Apparatus for making rubberless tire bead assemblies

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US946531A (en) * 1907-04-05 1910-01-18 Westinghouse Electric & Mfg Co Coil-former.
GB244887A (en) * 1924-11-10 1925-12-31 Arthur Kirkland Improvements in or relating to patterning mechanism for circular knitting machines
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1280193B (en) * 1964-10-03 1968-10-17 Schloemann Ag Coiler system for hot-rolled wire
DE1294321B (en) * 1966-02-17 1969-05-08 Schloemann Ag Coiler system for hot-rolled wire
US3793864A (en) * 1971-11-15 1974-02-26 Pirelli Waveguide winding machine
US3782424A (en) * 1972-09-22 1974-01-01 Essex International Inc Reversible cast control device for flyer winder
US5141032A (en) * 1987-12-08 1992-08-25 National-Standard Company Apparatus for making rubberless tire bead assemblies

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