US1368536A - Winding-machine - Google Patents

Winding-machine Download PDF

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Publication number
US1368536A
US1368536A US317166A US31716619A US1368536A US 1368536 A US1368536 A US 1368536A US 317166 A US317166 A US 317166A US 31716619 A US31716619 A US 31716619A US 1368536 A US1368536 A US 1368536A
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winding
spindle
shaft
sheet
paper
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US317166A
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James C Anderson
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VARLEY DUPLEX MAGNET CO
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VARLEY DUPLEX MAGNET CO
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Priority to US317166A priority Critical patent/US1368536A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/06—Coil winding
    • H01F41/064—Winding non-flat conductive wires, e.g. rods, cables or cords
    • H01F41/066—Winding non-flat conductive wires, e.g. rods, cables or cords with insulation
    • H01F41/068—Winding non-flat conductive wires, e.g. rods, cables or cords with insulation in the form of strip material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/43—Electric condenser making
    • Y10T29/435—Solid dielectric type

Definitions

  • This invention relates to machines for winding strands of material, such as wire, thread, ribbon or filaments into coils, helices or bobbins, and has special reference to machines for winding copper wire into electric coils or helices for use in various kinds of apparatus.
  • the particular invention herein described is an improvement upon machines described in U. S. Patents No. 654,583, issued July 31, 1900, and No. 798,864, issued September 5, 1905.
  • a plurality of coils are wound simultaneously, in, separated zones, upon a spindle 0r mandrel, the convolutions of wire being wound in layers superposed one upon the other and the machine being adapted to introduce or inject sheets of paper between the adjacent layers during the building-up of the coils and while the spindle is in motion.
  • Each layer in all of the coils is finished at the same instant and at that instant a sheet of paper of suflicient length to make one wrapping around the coil and of suflicient Width to extend over all of the coils on the spindle is delivered to the spindle and wound thereon as a foundation for the next succeeding layer.
  • the machine stops and all of the coils on the spindle are removed in a body or stick which is afterward separated into individual coils by severing the various sheets of paper between the spaced coils.
  • the paper mechanism of the present application is of such a nature that it provides for the simultaneous winding of a comparatively large number of coils by providing mechanism capable of feeding to the spindle, successive sheets of paper of sufiicient width to cover a large number of coils on the spindle, and to inject said sheets into the coils and wind them thereupon evenly and smoothly to furnish individual foundations for the respective layers of wire.
  • the normal winding speed of the spindle was limited to the speed at which the paper could be successfully injected, whereas in the present machine means are provided for instantaneously increasing the speed immediately after the paper has been injected so that the average speed at which the wire will be wound will be much greater than that at which the aper is wound and much faster than in t e old machines.
  • This higher spindle speed continues durin three quarters or more of the layer and is then grad ually reduced through the remainder of the layer until at the end thereof the speed is such that the paper can be smoothly and successfully wound into the coil.
  • Figure 1 is a plan of the machine
  • Fig. 2 is a front elevation of the left end of the machine
  • Fig. 3 is a left side elevation
  • Fig. 4 is a right side elevation
  • Fig. 5 is a central vertical front to the rear section
  • Fig. 6 is a side elevation of the gage shaft and trip shaft with their associated arts
  • Fig. 7 is a rear end view of said shafts and parts
  • Fig. 8 is a section through the frame looking rearward from the line w-w on Fig. 5;
  • lg. 9 is a plan of the mechanism appearin below the line yy of Fig. 5;
  • iig. 10 is a plan of the cutting mechanism
  • Fig. 11 is a sectional detail of a rtion of the paper measuring the feeding evices
  • Fig. 12 is a left end elevation of the transfer and gripping devices
  • Fig. 13 is a right end elevation of the transfer and gripping mechanism
  • Fig. 14 is a diagrammatic perspective view of the gearing which drives the ejector rolls;
  • Fig. 15 is a detail of the cam and link which operates the transfer frame
  • Figs. 16, 17, 18, 19 and 20 illustrate the operation of the paper cutting, gripping, transferring and ejecting mechanism
  • Fig. 21 1s a conventional perspective of the speed control devices for the spindle
  • Fig. 22 is a longitudinal section of a finished stick of winding
  • Fig. 23 is an enlarged detail showing the interwinding of the wire and paper at the end of a layer.
  • 1 indicates a table upon which the main frame 2 of the machine rests.
  • 3 indicates a short shaft, mounted in brackets 4, to which power is communicated frictional surfaces 8 between the two pulleys into contact.
  • a third pulley 9 on shaft 3 is for a purpose not concerned with thepresent invention, and it will be understood that the hub construction of the ulleys 7 and 9 with res ect to the left-ban bearing bracket, is such that pulley 7 is held from movement toward the left when the shaft 3 is moved to bring about the frictional engagement mentioned.
  • Shaft 12 carries a chuck 14 for the left end of the winding spindle 15, the right-hand end of said spindle being held in a chuck 16 mounted to rotate in a bearing 17 rising from the frame 2.
  • the right-hand chuck 16 is provided with a leather collar 18 serving as a friction gear for a purpose which will hereinafter ap ear.
  • the shaft 12 carries a worm engaging with a worm gear (not shown) carried upon the end of a shaft 19 shown in dotted lines.
  • This shaft is horizontal and extends rearward to about midway of the machine where it carries a bevel,
  • the gage shaft is mounted in suitable hearings on the horizontal portion of the frame 2 and runs fore and aft of the machine, its forward end being provided with a knurled zone 34, or knob, by which it can be rotated by hand.
  • a jaw clutch 35 normall held in engagement by a spring 36 whic bears at one end against a bearing of the shaft 33 and at the other end against a member of the clutph which is pinned to the shaft.
  • Shaft 33 carries a disk 37 upon which a scale is marked to indicate the number of layers of wire which shall be wound into a coil, upon the completion of which the machine automatically stops. Adjacent to the disk is an index 38 by which the shaft may be set and which shows at any moment during the winding the number of la ers that have been wound upon the coils. his gage shaft also carries a tripping mechanism for throwing out the main clutch of the machine when the predetermined number of layers have been wound into the coils. This tripping mechanism consists of an arm 39 (see Figs.
  • cam shaft 26 is provided with two adjustable arms 48 and 49, each having a pin at its outer extremity and one of the arms being longer than the other.
  • the trip shaft 42 carries a crank 50 at its rear end to'which is secured an arm 51, the upper end of which is in the path of travel 0 the pin at the extremity of t e arm 48, and when struck by said pin, rocks the shaft 42 in a direction to release the hook 41 from arm 43 and cut off the power, as before described.
  • Shaft 44 carries at its rear end a curved arm 52, the free end of which is thrown into the path of the pin at the end of the arm 49 by the oscillation of shaft 44 when the power is cut off, so that when the pin on arm 49 strikes the end of arm 52, shaft 44 is oscillated in the reverse direction and again connects the power with the machine. It thus occurs that in each rotation of the cam shaft 26, which corresponds to the period required to wind one layer of wire, the power is cut off and after an interval depending upon the relative angular positions of the two arms 48 and 49, is again restored. During this brief interval, the machine runs under its momentum, its speed decreasing to a desired degree and then immediately increasing to the maximum.
  • the shaft 44 is oscillated in a direction to engage the friction pulleys, by means of a hand lever 53 at the front of the machine which is pressed downward until the arm 43 on the shaft 44 is engaged by the hook 41.
  • the trip shaft 42 has a normal bias to cause its hook 41 to engage the arm 43 by a spring 54 shown in Fig. 1.
  • a traverse rod 54 mounted to reciprocate in bearings 55 on each side of the machine and carrying a plurality of brackets 56, each supporting two guide rolls 57 for the wires which lead from the supply spools (not shown) to the spindle. There is one of these brackets and. its pair of guide rolls for each coil wound upon the spindle and the rod is moved back and forth in order to form the successive layers of the various coils.
  • This traverse rod is reciprocated by means of a cam cylinder 58 containing a cam groove in its surface engagcd by a block carried by a shoe 59 attached to the left extremity of the traverse rod. The cam is rotated by a train of gears 60 leading from the cam shaft 2(. and makes a half rotation for each layer.
  • the main frame 2 of the machine as seen in Figs. 5 and 8, comprises two rectangular portions 61 and 62, one surmounting the other and each in the form of a hollow rectange, the spaces together affording a space or passage 63 for the, reception of the depending sheets as they are measured off from the supply roll.
  • the mechanism is principally supported upon the horizontal top of the upper frame member 62.
  • This upper member is surmounted by a box-like frame 64, comprising front, back and end plates with the bottom open and communicating with the space 63 below.
  • Within and upon this box-like frame are mounted the various mechanisms for manipulating the paper, such mechanisms being controlled by the cam shaft through connections extending thereto from within the frame.
  • a frame 66 extending horizontall across the machine and having mgunted? therein four rollers 67, 68, 69 and 7U;' which are termed the measuring and feeding rollers for the paper.
  • the roller 67 is coneentric with the pivotal axis of the .fraimeTand power is delivered to this roller" thrgu g h a bevel pinion 71 which is located outside of the supporting bracket and is driven by another bevel pinion 72, as will be hereinafter described.
  • the three rollers 67, '68 and 69 are not in contact with each other, but the rollers 69 and 70 are in contact and grip'th paper between them in order to feed the same when the rollers are rotated b the gears attached respective] to the. rig it-hand end of the rollers an connected in a train.
  • the ro lcrs can be thrown upward to facih ate the operation of threading the paper between the various rollers and also to give access to parts of the mechanism beneath the rollers.
  • the bevel pinion 72 is carried by an inclined shaft 73 reaching rearward and downwardly to the drive shaft 23 whereby it is driven through the bevel pinion 74 and gear 75.
  • the last mentioned gear is loosely mounted on the said shaft 23, but is adapted to be connected therewith through a clutch 76 which is closed and opened b an oscillatin yoke 7 7 engaging a groove hub on the s idin clutch member.
  • the oscillating yoke is fixe upon a short shaft 78 which is rocked by means of a. crank arm 79 controlled by a cam disk 80 on the outer right-hand end of the cam shaft 26.
  • the arm 79 is provided with apin 81 which is held against the face of the cam by a spring 82.
  • a portion of the face of the cam is cut away, as shown at 83, which when presented to the pin, permits the arm to oscillate shaft 78 in a direction to engage or close the clutch 76, thereby communicating rotary motion to the measuring and feeding rollers.
  • the shaft 78 is oscillated in the opposite direction to open the clutch 76 by the movement of an arm 84 fastened to shaft 78 and bearing at its free end against a sliding hub 85 (see Fig. 11), which is located upon the projecting end of the cam shaft and is moved outward by reason of a roller 86 which it carries riding upon a cam plate 87 fixed to the face of the cam disk 80.
  • mechanism is provided for opening the clutch 76 at a later point in the rotation of the cam shaft with each rcvolution.
  • This mechanism consists of an arm 88 attached to the sliding hub 85 and extending radially therefrom and provided at its outer end with a segment of ear 89 meshing with a pinion 90 on the right-hand end of the shaft 91 extendin across the machine to the gage shaft 33 50m which it is driven by the bevel gearing 92.
  • the gage shaft rotates only a fraction of a turn during the winding of each layer of wire
  • the pinion 90 which moves the gear segment 89 will likewise rotate fractionally and the time when clutch 76 is opened will be successively later and later, resulting in an increased length of paper at each feeding operation.
  • a horizontal bar 93 carrying on f its under-surface a knife 94 made up of a number of teeth similar to the knifesqf a mowing machine, although the particular, form of knife is not important to the invention.
  • the bar 93 which carries this knife moves on the upper flanges of the end walls of the box-like frame 64 and is ada ted to be reciprocated from the shaft 95 t rough cranks 96 attached to the bar.
  • the shaft 95 is rocked by the cam 28 at the left end of the cam shaft through link 97 (Fig. 1). spring 98 (Fig.
  • the machine comprises a transfer mechanism which grips the PHDBI'lNEfOIB it is cut and applies a tension thereto to facilitate the cutting and thereafter transfers the severed edge to a position where it can be injected beneath the wire strands and thereafter wound onto the finished layers of wire.
  • the transfer mechanism comprises a shaft 101 (Figs. 5 and 8) having a crank arm 102 by which it is oscillated from cam 30 through link 103, the usual spring 10 1 serving to keep the roller at the end of the link in engagement with the edge of the cam.
  • On the shaft 101 are two arms, one at each end thereof indicated by 105 and 106 (Figs.
  • the upper gripping roller 112 preferably is of slightly greater diameter along the middle third of its length as seen in Fig. 8. It will be seen that when the frame 113 swings upon its pivot. the upper gripping roller will either separate from or approach the lower roller. To cause this swinging movement of the frame 113 it is provided with a roller 116.at one end which is engaged by a device which will be later explained for the purpose mentioned.
  • the pivotally hung frame 107 is held in normal relation to the crank arms 10:"). 106 in which it is hung by a spring 117 which holds a pin 10? against a stop pin 117' and the frame 113 is held in normal relation to the frame 107 by a spring 118 (Fig. 12). in which normal position the two gripping rollers are pressed together.
  • a short rocker shaft 122 provided with a curved finger 123, against the underside of which the roller 109 on the tail piece 108 of the transfer frame is adapted to lmpinge and ride when the transfer frame is returned to its forward position indicated generally in Fig. 5.
  • the transfer frame arrives at its forward position, its apron 110 should be in a plane substantially tangent to the surface of the winding on the spindle and as the diameter of the winding increases with each layer, it is necessary to correspondingly change the angular position of the apron each time it swlngs forward.
  • the transfer frame carries at its righthand end a pulley 126 (Figs. 13 and 14) having a frictional face adapted to engage with the leather collar 18 on the chuck of the spindle.
  • a pulley 126 Fixed to pulley 126 is a pinion 127 engaging with an idler 128 and the idler in turn meshes with a gear 129, all of these gears on the outside of the end plate of the transfer frame.
  • the shaft carrying gear 129 extends through the frame and carries another gear 130 which meshes with a pinion 131 on the end of the lower gripping roll 111.
  • Gear 130 also meshes with a gear 132 which in turn engages a pinion 133 on the end of the upper gripping roller 112.
  • the friction pulley 126 arrives at a position 'very close to, but not touching the friction collar 18 on the chuck of the winding spindle.
  • the cam 30 is provided with a supplemental cam 134 which is traversed b a finger 135on the end of the link 103 ig. 15).
  • this finger engages the cam 134, the roller on the end of the link is held out of contact with the edge of cam 30 and at the point 136 where a deep spot in cam 30 is presented to the roller on link 103.
  • cam 134 which permits the link to move rearwardlysuddenly under the action of spring 104 to carry the transfer frame forward slightly and bring the friction pulley 126 into engagement with the leather collar on the spindle chuck
  • Cotiperating with the winding spindle 15 is a' smoothing roller 143 (Figs. 1 and 5) mounted between arms 144 which are pivoted in brackets on an axis 145 located above and parallel to the winding spindle.
  • this roller 143 is adapted to rest against the front surface of the wound material, witha certain pressure determined by its weight or by a spring (not shown),' provided for the purpose. The function of this roller to perform which requires that it shall bear evenly at all points throu hout its length against.
  • Embracing the roll is a frame 147 pivoted to swing on an axis 148 'and having at its free end a roller 149. This frame constitutes a take-up for the web and is urged to its rearward po sition by a spring 150, the limit of its movement being determined by a chain 151.
  • the web of paper 152 leads from the roll around a fixed idle roller 153, thence around the roller 149. on the take-up and thence to the measuring and feeding rollers 67 to 70 over which it passes in the manner best shown in Figs. 16 to 20.
  • rollers 67, 68 and 69 are relatively located so. that the web in passing over and under them as shown will embrace a large portion of their peripheries, the roll 68 havmg more than 180 of its surface in contact with the web. This distributes the frictional grip of the rollers over a large area of the web. making it possible to apply the required feeding force to the web without tearing it and thereby facilitating the handling of webs of thin and delicate paper and material.
  • the measuring and feed ing rolls commence to turn by reason of the closing of clutch 76 under the action of cam 80, and a length of paper is fed downward past the knife between the gripping rolls 111 and 112, in front of the brake 140 and as far as necessary into the open space ()3 in the frame depending upon the length of paper-acquired at the given layer of the winding and also upon the number of turns which the sheet of paper is to make around the winding.
  • cam 29 permits the spring acting on shaft 120 to oscillate the finger 119 rearward; this allows the spring acting on the supplemental frame 113 to swing the latter forward and close the gripping rollers 111 and 112 upon the paper.
  • cam 28 rocks the shaft 95 which throws the knife bar 93 forward and severs the paper, the upper or sex-- ered end thereof then falling forward upon the table 110 of the transfer frame in the position shown in Fig. 18.
  • the severed edge of the paper travels forward or toward the winding spindle and this is determined by the fact that the closed gripping rolls 111 and 112 occupy a rear oblique position with respect to the paper when the transfer frame is in this position, and exert a forward tension upon the upper end of the sheet which is sufiicient to cause the paper to fall into the position described.
  • the cam 30 allows spring 104 to swing the transfer frame forward until it is in the upright position shown in Fig. 19 where the upper end of the paper lying upon the apron 110 occupies a substantially horizontal position having been turned since it was cut throu h an arc of 90, and the forward edge of tfie paper is presented ,at a tangent to the winding upon the spindle, immediately back of the points where the various wires enter the coils.
  • the transfer frame In moving to this position, the transfer frame is given a definite angular position to bring the edge of the paper tangent to the winding of the spindle, by the finger 123 which engages the roller 109 during the final movement of the transfer frame and determines the position of the apron in accordance with the diameter of the winding.
  • the variations of this position are illustrated by a comparison of Figs. 19 and 20 where in the former case the inclination of the apron is downward to accord with the small diameter of winding on the spindle, while in the latter case the tilt of the apron is upward to cooperate with the nearly completed winding of substantially greater diameteia, During the forward motion of the transfer. frame.
  • the cam controlling the knife permits the latter to move backward to the position shown in Fig. 5.
  • the cam which controls shaft 138 causes the brake plate 140 to swing forward until its upper taped edge rests against the paper along its full width. pressing it against the lower gripping roller 111 to furnish tension upon the sheet and keep it smooth while it is being drawn into the winding.
  • the supplemental cam 1 H cooperating with main cam 30 and operating through the finger 135 and link 103, permits spring 104 to throw the transfer frame slightly forward to bring the friction pul ley 126 and the friction collar 18 on the winding spindle into contact.
  • the gear train is then actuated to drive the gripping rollers 111 and 112 in a direction to eject the forward edge of the paper into the winding so that the strands leading from the supply spools to the respective rolls on the spindle will simultaneously grip the presented edge of the paper and draw it into the winding.
  • the peripheral speed of the spindle is slightly greater than that of the rolls 111 and 112 so that as soon as the edge of the paper is caught by the strands of wire, tension is immediately, applied to the area of the sheet between the spindle and the rolls.
  • the size of a sheet of paper introduced into the winding by this machine when three or more wrappings are allowed for each sheet varies from 10 to 25 inches in length and may have a width from 10 to 24 inches, depending upon the number of coils which are simultaneously wound.
  • the paper is exceedingly thin, and unless introduced into the winding under proper conditions will wrinkle or wind unevenly, especially at the high spindle speed which are required in order to turn out the product with rapidity.
  • the brake plate 140 which supplies tension and smooths the sheet just before it passes between the gripping rollers 111 and 112.
  • the upper gripping roll is of slightly greater diameter for the middle third of its length than at the end thirds, which causes the rollers to grip the middle portion of the sheet strongest.
  • each layer of wire is, for approximately three quarters of its length, wound at several thousand revolutions per minute, while during the winding of the remainin quarter of the layer the speed is gradua 1y reduced until at the end of the layer the rate is approximately one-fourth o the normal windings eed, at which (point the paper is injecte and interwoun with the wire.
  • t e main cam shaft 26 makes one rotation during the winding of each layer of wire.
  • the shorter arm 48 on the cam shaft strikes the set screw in the upper end of the arm 51 on trip shaft 42 and rocks the latter shaft to release the.
  • the machine stops by reason of the hook 41 being struck by pin 40 carried by the gage shaft.
  • the gage shaft 33 is turned backward hand to the zero position which sets the pin 40 back the number of steps corresponding to the number of layers to be wound and also resets the finger 123 to the beginning point of its movement. Attention is called to the disposition of the sheet in this machine while it is being measured from the web, cut and transferred to the spindle.
  • Fi 22 shows a sectional view of the stic of finished coils, the individual coils being represented by a, a, etc., and the intervening spaces, occupied by the paper only, by b, 6, etc., the whole structure being wound upon a tubular core a which is passed over the winding spindle and clamped thereto by the chuck 16.
  • a winding spindle In a winding machine, the combination of a winding spindle, means for continuously winding thereon a windable body, means for intermittently winding thereon a second windable body and automatic means for winding at reduced speed while both bodies are being wound on the spindle.
  • a spindle In a winding machine, the combination of a spindle, means for continuously. winding strand material thereon, means for intermittently winding sheet material thereon and means for running at a reduced speed while both materials are being wound.
  • a winding spindle In a winding machine, the combination of a winding spindle, means for winding strand material in superposed layers there on, means for winding sheet material between the layers and means for automatically reducing, without stopping, the speed of the spindle, during the winding of the sheet material.
  • a win ing spindle a transfer mechanism comprising a pair of bodily movable gripping rolls adapted to present the forward edge of a sheet to the spindle and means for thereafter rotating said (gripping rolls to feed the sheet to the spin a.
  • a winding spindle a pair of gripping rollers bodily movable to convey the sheet toward the spindle and gearing between the spindle and rollers, adapted to be brou ht into mesh by said movement of the to are, to rotate the latter and feed the sheet to the spindle.
  • a wading a sheet feeding and cutting mechanism and a transfer device comprising a pair of rollers and adapted to convey a sheet from said mechanism to the spindle, means for separating and closing said rollers while the device is in one position, to admit and grip the sheet between them,and means for rotating said rollers while the device is in its other. position, to feed the sheet to the spindle.
  • a win ing spindle a win ing spindle, a. pair of gripping rollers, means for separating the ro lers, means for feeding a sheet of the material between the rollers, means for closing the rollers to grip the sheet, means for moving the rollers with the sheet toward the spindle, a gear train between the rollers and spindle brought into mesh by the approach of the rollers to the spindle, whereby the rollers are caused to feed the sheet to the spindle.
  • a transfer mechanism comprising a pair of separable gripping rollers, a sheet feeding mechanism located above the transfer mechanism and adapted to feed asheet downward between the separated gripping rollers, means for closing the rollers to grip the sheet, and means for severing the sheet above the rollers.
  • a. sheet feeding mechanism from which the fed sheet is vertically suspended, a pair of gripping rolls one located on each side of the plane of the suspended sheet, means for clamping the sheet between the rolls with the axes of the latter in a plane oblique to the plane of the sheet, means for severing the sheet above the gripping rolls and means for swinging the rolls to a osition where their axes will be substantial y in a vertical plane.
  • a win ing spindle rotary rolls for feeding and measuring sheets from a continuous strip
  • a power shaft driving connections
  • Including a clutch between the power shaft and rolls and means for intermittently closing said clutch for successivel increasing periods.
  • a winding spindle comprising an oscillating frame and a sheet holding member pivoted thereto, and means for ers one of which is mounted u on eachframe, and means operative at eac oscillation of the oscillating frame to swing the ivoted frame to open and close the rollers or the purpose described.
  • a win ing spindle a win ing spindle, a air of gripping and feeding rolls, gearing a apted to connect the spindle and rolls to drive the latter from the former and means for imparting two motions to the gripping rolls one motion to position the sheet for delivery to the spindle and the other to engage said gearing to drive the rolls to deliver t e sheet to the spindle.
  • a windin spindle means for directing a plurality 0% strands to successive points along the length of said spindle, means for delivering sheet -material to the spindle and a smoothing roller arran d parallel to the s indle and adapted to. ar against the sur ace of the material on the spmdle, said roller having a surface conformm to the defamation of the spindle due to t e tension of the material during the winding operation.
  • a machine for winding strandand sheet material the combination of a windin spindle, means for directing a plurality o strands to successive points along the length of said spindle, means for delivering sheet material to the spindle and a smoothin roller arrangzd parallel to the s" indle and adapted to ar against the'sur ace of the material on the sp1ndle, saidrollerhavin a surface ta ring toward its axis from t e middle to t e extremities for the purpose set forth.
  • a winding spindle In a machine for winding sheet material, the combination of a winding spindle, a sheet feeding mechanism from which the fed sheet is vertically-suspended, a pair of gripping rolls one located on each side of the plane of the suspended sheet, means for severing the sheet above the gripping rolls and means for clamping the sheet between the rolls with the axes of the latter in a plane oblique to the lane of the sheet whereby a portion of t e sheet is bent for presentation to the spindle.
  • a windin spindle comprising a plurality of spaced rolls, over which the s eet is successively led in diverse directions, means for positively driving said rolls at uniform peripheral speed and means located beyond the rolls for positively gripping the sheet and imparting a longitudma tension to that portion of the sheet passing over the said spaced rolls.
  • a sheet feeding mechanism comprising three parallel positivel driven rolls, spaced apart and so placed 'relatively that the sheet in passing around them successively will emrace more than 180 of the circumference of one of them, in combination with means located beKond the rolls for positively ripping the s eet and im artin a Ion 'tu inal tension to that portio of tEe sheet over the said spaced rolls.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Replacement Of Web Rolls (AREA)

Description

J. C. ANDERSON.
WINDING MACHINE.
l N V EN TOR.
A TTORNEYS.
I0 SHEETSSHEET I.
Patented Feb. 15, 1921.
m M m m u A D u n N PM I o m m MW. M... P H mm m- 6 3 r0 6. 8 E W 6 W 3 W. 1 I!!! J. C. ANDERSON.
WINDING MACHINE. APPLICATIQII FILHI we. I3, 1919.
1,368,536. Patented Feb. 15,1921.
l0 SHEETS-SHEH' 3.
WITNESS.- /IIWENTOR.
, BY I Amxuzvs.
l. C. ANDERSON.
WINDING MACHINE.
APPLICATHJN FILED Aue.13. 1919.
1,368,536. Patented Feb. 15, 1921.
ID SHEETS-SHEET 5' J 'O I o z o 49 O WITNESS: INVENTOR.
A TTORNEYS.
, .1. E. ANDERSON.
WINDING MACHINE.
APPLICATION FILED Aua.13. l9i9.
Patented Feb. 15, 1921.
l0 SHEETS-SHEET 6.
INVENTOR.
WI TNESS:
'A TTORNEY.
J. C. ANDERSON.
WINDiNG MACHINE.
APPUCATION FILED AUG.13. 1919.
Patented Feb. 15, 1921.
10 SHEETS-SHEET 7- IN V EN TOR.
M M7 L M ATTORNEYS.
J. C; ANDRSON.
WiNDING MACHINE.
APPLICATION HLED AUGJE, 19:9.
Patented Feb. 15, 1921.
10 SHEETS-SHEET 8- J. C. ANDERSON, wmome MACHINE APPLICATION FILED AUGJS 1919- Patented Feb. 15, 1921.
I0 SHEETS-SHEET s.
I I I l ililllltilllv I N V EN TOR. M
URNEYS J. C. ANDERSON.
WINDING MACHlNE.
APPLICATION man AUG-I3. m9.
Patented Feb. 15, 1921.
10 SHEETS-SHEET l0.
WITNESS:
. j INVENTOR ATTORNEYS.
UNITED STATES PATENT OFFICE.
JAMES C. ANDERSON, OI RUTHERFORD, NEW JERSEY, ASSIGNOR TO VARLEY DUPLEX MAGNET COMPANY, A CORPORATION OF NEW JERSEY.
WINDING-MACHINE.
Application filed August 13, 1919.
T 0 all whom it may concern:
Be it known that I, JAMES C. ANnnnsoN, a citizen of the United States, residing at Rutherford, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Vinding- Machines, of which the following is a full, clear, and exact description.
This invention relates to machines for winding strands of material, such as wire, thread, ribbon or filaments into coils, helices or bobbins, and has special reference to machines for winding copper wire into electric coils or helices for use in various kinds of apparatus. The particular invention herein described is an improvement upon machines described in U. S. Patents No. 654,583, issued July 31, 1900, and No. 798,864, issued September 5, 1905. In the patented machines mentioned, a plurality of coils are wound simultaneously, in, separated zones, upon a spindle 0r mandrel, the convolutions of wire being wound in layers superposed one upon the other and the machine being adapted to introduce or inject sheets of paper between the adjacent layers during the building-up of the coils and while the spindle is in motion. Each layer in all of the coils is finished at the same instant and at that instant a sheet of paper of suflicient length to make one wrapping around the coil and of suflicient Width to extend over all of the coils on the spindle is delivered to the spindle and wound thereon as a foundation for the next succeeding layer. \Vhen the required number of layers are completed, the machine stops and all of the coils on the spindle are removed in a body or stick which is afterward separated into individual coils by severing the various sheets of paper between the spaced coils.
In an application for patent filed by me April 8, 1919, Serial No. 288,822, there is described an improvement upon the said patented machines consisting in the provision of a plurality of winding spindles and a means for mounting and shifting the same, whereby the delay necessitated in preparing the spindle for the new windings and manipulating the finished coils, is reduced. The improvement on the old patented machines disclosed in the present application is with respect to the paper mechanism and the manner in which the paper is handled and introduced between the layers of the Specification of Letters Patent.
Patented Feb. 15, 1921.
Serial No. 317,166.
coils, the final object in the present case, as well as in the invention of the pending application, being to increase the output or capacity of the machine. The paper mechanism of the present application is of such a nature that it provides for the simultaneous winding of a comparatively large number of coils by providing mechanism capable of feeding to the spindle, successive sheets of paper of sufiicient width to cover a large number of coils on the spindle, and to inject said sheets into the coils and wind them thereupon evenly and smoothly to furnish individual foundations for the respective layers of wire. As an additional improvement in the paper mechanism there is provided means for measuring, cutting, feeding and winding sheets of paper of sufficient length to make a plurality of turns or wrappings thereof between the adjacent layers of wire and to accomplish this at a high rate of spindle speed without wrinkling or producing other irregularities therein, notwithstanding the fact that the paper is exceedingly thin.
In this connection it may be mentioned that for insulating purposes it is considered better practice to use a plurality of wrappings of thin paper between the adjacent layers of wire, than to use a single wrapping of thicker paper for the reason that imperfcctions in the paper, whether it be thick or thin, extend entirely through and by using a number of layers an imperfection in one of them will be covered by a perfect portion of another. A plurality of wrappings of each sheet requires that the sheets shall be of considerable length and it is impracticable to feed such lengths by means of reciprocating carriages and other heavy moving parts as in the earlier machines on account of inertia problems involved. The radically different mechanism for handling these larger sheets, comprised in the present invention therefore becomes an important feature thereof.
In the patended machines, the normal winding speed of the spindle was limited to the speed at which the paper could be successfully injected, whereas in the present machine means are provided for instantaneously increasing the speed immediately after the paper has been injected so that the average speed at which the wire will be wound will be much greater than that at which the aper is wound and much faster than in t e old machines. This higher spindle speed continues durin three quarters or more of the layer and is then grad ually reduced through the remainder of the layer until at the end thereof the speed is such that the paper can be smoothly and successfully wound into the coil. To handle and control the wider and longersheets of thin paper required to cover the greater number of coils on the spindle and to make several wrappings around the successive layers of wire is-the special function of the present machine. The paper mechanism of the present application and the change speed devices referred to are intended to be used in connection with the duplex spindle apparatus of the pending application above mentioned, although for simplicity the drawings in the present case show an ordinary iingle spindle and simple mounting there- Referring to the drawings:
Figure 1 is a plan of the machine;
Fig. 2 is a front elevation of the left end of the machine;
Fig. 3 is a left side elevation;
Fig. 4 is a right side elevation;
Fig. 5 is a central vertical front to the rear section;
Fig. 6 is a side elevation of the gage shaft and trip shaft with their associated arts;
Fig. 7 is a rear end view of said shafts and parts;
Fig. 8 is a section through the frame looking rearward from the line w-w on Fig. 5;
lg. 9 is a plan of the mechanism appearin below the line yy of Fig. 5;
iig. 10 is a plan of the cutting mechanism;
Fig. 11 is a sectional detail of a rtion of the paper measuring the feeding evices;
Fig. 12 is a left end elevation of the transfer and gripping devices;
Fig. 13 is a right end elevation of the transfer and gripping mechanism;
Fig. 14 is a diagrammatic perspective view of the gearing which drives the ejector rolls;
Fig. 15 is a detail of the cam and link which operates the transfer frame;
Figs. 16, 17, 18, 19 and 20 illustrate the operation of the paper cutting, gripping, transferring and ejecting mechanism;
Fig. 21 1s a conventional perspective of the speed control devices for the spindle;
Fig. 22 is a longitudinal section of a finished stick of winding; and
Fig. 23 is an enlarged detail showing the interwinding of the wire and paper at the end of a layer.
Referring to the drawings, more especially to Figs. 1 and 2 thereof, 1 indicates a table upon which the main frame 2 of the machine rests. 3 indicates a short shaft, mounted in brackets 4, to which power is communicated frictional surfaces 8 between the two pulleys into contact. A third pulley 9 on shaft 3 is for a purpose not concerned with thepresent invention, and it will be understood that the hub construction of the ulleys 7 and 9 with res ect to the left-ban bearing bracket, is such that pulley 7 is held from movement toward the left when the shaft 3 is moved to bring about the frictional engagement mentioned. From pulley 7 a belt 10'leads upward through a horizontal plate member of the frame 2 to .1 pulley 11 on a shaft 12 mounted in a housing 13. Shaft 12 carries a chuck 14 for the left end of the winding spindle 15, the right-hand end of said spindle being held in a chuck 16 mounted to rotate in a bearing 17 rising from the frame 2. The right-hand chuck 16 is provided with a leather collar 18 serving as a friction gear for a purpose which will hereinafter ap ear.
Within t e housing 13, the shaft 12 carries a worm engaging with a worm gear (not shown) carried upon the end of a shaft 19 shown in dotted lines. This shaft is horizontal and extends rearward to about midway of the machine where it carries a bevel,
pinion 20 engaging with a bevel gear 21,,
from which gear a train 22 leads rearward 'to what may be termed the main drive shaft 23 of the machine. From this drive shaft motion is communicated through pinion 24 and gear 25 to a cam shaft 26. Inasmuch as a sheet of pa er is wound upon the spindle at the comp etion of each layer of wire wound thereon, it follows that in each period during the formation of the wire layers the paper mechanism must repeat or per orm its cycle of operations upon the paper. The shaft 26 controls all of the operations upon the paper and makes one rotation for each layer of wire in a coil. This shaft performs its function through fourcam disks mounted thereon and indicated respectively by 27, 28, 29 and 30. Cam shaft 26 carries a worm 31 which meshes with a gear 32 on a gage shaft 33. The gage shaft is mounted in suitable hearings on the horizontal portion of the frame 2 and runs fore and aft of the machine, its forward end being provided with a knurled zone 34, or knob, by which it can be rotated by hand. Between the gear 32 and the shaft 33 is a jaw clutch 35 normall held in engagement by a spring 36 whic bears at one end against a bearing of the shaft 33 and at the other end against a member of the clutph which is pinned to the shaft. By pulling outward on the end 34 of the shaft, the clutch is opened and released from the gear 32, thus freeing the shaft so that it may be rotated by hand for setting purposes. In the normal running condition, the clutch is engaged and shaft 33 is thereby geared to the cam shaft 26. Shaft 33 carries a disk 37 upon which a scale is marked to indicate the number of layers of wire which shall be wound into a coil, upon the completion of which the machine automatically stops. Adjacent to the disk is an index 38 by which the shaft may be set and which shows at any moment during the winding the number of la ers that have been wound upon the coils. his gage shaft also carries a tripping mechanism for throwing out the main clutch of the machine when the predetermined number of layers have been wound into the coils. This tripping mechanism consists of an arm 39 (see Figs. 6 and 8) adjustably clamped upon the shaft and provided with a pin 40 which is adapted to strike :1 lug on a hooked arm 41 attached to a trip shaft 42, thus rocking the latter and releasing the hooked arm from the end of a lever 43 carried by a shaft 44 and permitting the latter to oscillate slightly under the pull of a spring 45. (Fig. Shaft 44 is moutned in suitable bearings under the horizontal portion of the frame 2, extends from front to rear of the machine and carries a shaft crank 46, the end of which operates against the right-hand end of shaft 3 on which the drive pulleys are mounted. From this construction it will be seen that when the trip shaft 42 is oscillated by the pin 40 engaging the hooked lever 41, the spring 45 will release the pressure between the pulleys 5 and 7 and disengage the power from the machine. During each rotation of the cam shaft 26, the gage shaft 33 rotates a small fraction of a turn, each movement representing one layer of winding and corresponding to one of the s acings on the scale disk 37. Therefore, at t e beginning of the winding operation, the gage shaft is set by hand backward to the zero point 'on the scale, and when the shaft has moved forward the number of times corresponding to the predetermined total number of la ers, the pin 40 strikes the hooked arm an disconnects the power. At any point then in the winding of the coils the gage will show the number of layers that have been Wound. Obviously any device which will oscillate the trip shaft 42 in the same manner as it is oscillated by the pin 40, will likewise serve to disconnect the power, and accordingly the trip shaft 42 is provided at its forward end with a lever 47, the pressure on which by hand will instantly cut off the ower. This trip shaft is also operable durmg the winding of each layer of wire in order to momentarily cut off the power for a purpose and in a manner which will hereinafter he explained. This momentary cutting off of the power is accomplished by the mechanism shown in detail in Fig. 21, where it is seen that the cam shaft 26 is provided with two adjustable arms 48 and 49, each having a pin at its outer extremity and one of the arms being longer than the other. The trip shaft 42 carries a crank 50 at its rear end to'which is secured an arm 51, the upper end of which is in the path of travel 0 the pin at the extremity of t e arm 48, and when struck by said pin, rocks the shaft 42 in a direction to release the hook 41 from arm 43 and cut off the power, as before described. Shaft 44 carries at its rear end a curved arm 52, the free end of which is thrown into the path of the pin at the end of the arm 49 by the oscillation of shaft 44 when the power is cut off, so that when the pin on arm 49 strikes the end of arm 52, shaft 44 is oscillated in the reverse direction and again connects the power with the machine. It thus occurs that in each rotation of the cam shaft 26, which corresponds to the period required to wind one layer of wire, the power is cut off and after an interval depending upon the relative angular positions of the two arms 48 and 49, is again restored. During this brief interval, the machine runs under its momentum, its speed decreasing to a desired degree and then immediately increasing to the maximum. For starting the winding operation by hand, the shaft 44 is oscillated in a direction to engage the friction pulleys, by means of a hand lever 53 at the front of the machine which is pressed downward until the arm 43 on the shaft 44 is engaged by the hook 41. The trip shaft 42 has a normal bias to cause its hook 41 to engage the arm 43 by a spring 54 shown in Fig. 1.
Extending horizontally across the front of the machine immediately behind and above the winding spindle 15 is a traverse rod 54 mounted to reciprocate in bearings 55 on each side of the machine and carrying a plurality of brackets 56, each supporting two guide rolls 57 for the wires which lead from the supply spools (not shown) to the spindle. There is one of these brackets and. its pair of guide rolls for each coil wound upon the spindle and the rod is moved back and forth in order to form the successive layers of the various coils. This traverse rod is reciprocated by means of a cam cylinder 58 containing a cam groove in its surface engagcd by a block carried by a shoe 59 attached to the left extremity of the traverse rod. The cam is rotated by a train of gears 60 leading from the cam shaft 2(. and makes a half rotation for each layer.
The main frame 2 of the machine, as seen in Figs. 5 and 8, comprises two rectangular portions 61 and 62, one surmounting the other and each in the form of a hollow rectange, the spaces together affording a space or passage 63 for the, reception of the depending sheets as they are measured off from the supply roll. The mechanism is principally supported upon the horizontal top of the upper frame member 62. This upper member is surmounted by a box-like frame 64, comprising front, back and end plates with the bottom open and communicating with the space 63 below. Within and upon this box-like frame are mounted the various mechanisms for manipulating the paper, such mechanisms being controlled by the cam shaft through connections extending thereto from within the frame. Above the box-like frame and pivotally mounted on upwardly extending brackets 65, is a frame 66 extending horizontall across the machine and having mgunted? therein four rollers 67, 68, 69 and 7U;' which are termed the measuring and feeding rollers for the paper. The roller 67 is coneentric with the pivotal axis of the .fraimeTand power is delivered to this roller" thrgu g h a bevel pinion 71 which is located outside of the supporting bracket and is driven by another bevel pinion 72, as will be hereinafter described. The three rollers 67, '68 and 69 are not in contact with each other, but the rollers 69 and 70 are in contact and grip'th paper between them in order to feed the same when the rollers are rotated b the gears attached respective] to the. rig it-hand end of the rollers an connected in a train. By ivotally mounting the frame 6 the ro lcrs can be thrown upward to facih ate the operation of threading the paper between the various rollers and also to give access to parts of the mechanism beneath the rollers. For driving these measuring and feeding rollers, the bevel pinion 72 is carried by an inclined shaft 73 reaching rearward and downwardly to the drive shaft 23 whereby it is driven through the bevel pinion 74 and gear 75. The last mentioned gear is loosely mounted on the said shaft 23, but is adapted to be connected therewith through a clutch 76 which is closed and opened b an oscillatin yoke 7 7 engaging a groove hub on the s idin clutch member. The oscillating yoke is fixe upon a short shaft 78 which is rocked by means of a. crank arm 79 controlled by a cam disk 80 on the outer right-hand end of the cam shaft 26. To accomplish this, the arm 79 is provided with apin 81 which is held against the face of the cam by a spring 82. A portion of the face of the cam is cut away, as shown at 83, which when presented to the pin, permits the arm to oscillate shaft 78 in a direction to engage or close the clutch 76, thereby communicating rotary motion to the measuring and feeding rollers. The shaft 78 is oscillated in the opposite direction to open the clutch 76 by the movement of an arm 84 fastened to shaft 78 and bearing at its free end against a sliding hub 85 (see Fig. 11), which is located upon the projecting end of the cam shaft and is moved outward by reason of a roller 86 which it carries riding upon a cam plate 87 fixed to the face of the cam disk 80. This outward movement of the hub under the action of the cam rocks the shaft 78 in a direction contrary to that in which it is rocked bythe arm 79 with the result that the clutch is opened and the arm 79 restored to a position where it will again engage the surface of the cam 80 and ride thereupon until it again encounters the cutaway portion 83 of the cam, whereupon the operation will be repeated. In this manner the measuring and feeding rollers are rotated sufliciently to feed the approximate length of aper required for wrapping upon the spindle. Inasmuch, however,- as the sheets of paper which are introduced between the adjacent layers of winding are required to be of increasing length, due to the increasing diameter of the coils as they are built up, it is desirable to provide means for feeding the paper so that each sheet will be a required .amonnt longer than its predecessor. To accomplish this, mechanism is provided for opening the clutch 76 at a later point in the rotation of the cam shaft with each rcvolution. This mechanism consists of an arm 88 attached to the sliding hub 85 and extending radially therefrom and provided at its outer end with a segment of ear 89 meshing with a pinion 90 on the right-hand end of the shaft 91 extendin across the machine to the gage shaft 33 50m which it is driven by the bevel gearing 92. Since the gage shaft rotates only a fraction of a turn during the winding of each layer of wire, the pinion 90 which moves the gear segment 89 will likewise rotate fractionally and the time when clutch 76 is opened will be successively later and later, resulting in an increased length of paper at each feeding operation.
Immediately beneath the frame 66 in which the measuring and feeding rollers are mounted is a horizontal bar 93 carrying on f its under-surface a knife 94 made up of a number of teeth similar to the knifesqf a mowing machine, although the particular, form of knife is not important to the invention. The bar 93 which carries this knife moves on the upper flanges of the end walls of the box-like frame 64 and is ada ted to be reciprocated from the shaft 95 t rough cranks 96 attached to the bar. The shaft 95 is rocked by the cam 28 at the left end of the cam shaft through link 97 (Fig. 1). spring 98 (Fig. 9) returns the knife after it has moved forward to cut the paper and normally holds the roller 99 at the end of the link 97 against the edge of the cam; Immediately forward of the bar 93 which carries the knife is another bar 100 havin a cutting edge which cooperates with the knife in severing the paper. This bar is fixed and between its cutting edge and the knife-edge there is normally a space or passage through which the paper is fed downward from the feed rolls 69 and 70. As the paper is fed from the rolls 69 and 70. its free edge drops vertically in front of the knife and proceeds freely downward through the machine and into the space 63 to a distance depending upon the length fed out by the rolls. The proper length of paper having been fed out. it must next be severed and one edge presented to the winding spindle to be wound thereon at the proper time. For accomplishing this, the machine comprises a transfer mechanism which grips the PHDBI'lNEfOIB it is cut and applies a tension thereto to facilitate the cutting and thereafter transfers the severed edge to a position where it can be injected beneath the wire strands and thereafter wound onto the finished layers of wire. The transfer mechanism comprises a shaft 101 (Figs. 5 and 8) having a crank arm 102 by which it is oscillated from cam 30 through link 103, the usual spring 10 1 serving to keep the roller at the end of the link in engagement with the edge of the cam. On the shaft 101 are two arms, one at each end thereof indicated by 105 and 106 (Figs. 12 and 13) between and on the upper ends of which is pivotally hung a frame 107 having a tail piece 108 at one end provided with a roll 109. On the upper front edge of the frame is located an apron 110 extending across the machine and over which the paper is finally directed. as will be explained. Immediately to the rear of the table are two gripping rollers 111 and 112. the former extending across the machine and having a bearing at each end in the frame 107, and the latter immediately above and in contact with the former, but mounted in a supplemental frame 113 which extends across the machine and is pivoted at its extremities in upstanding ears 114 and 115 attached to the frame 107. The upper gripping roller 112 preferably is of slightly greater diameter along the middle third of its length as seen in Fig. 8. It will be seen that when the frame 113 swings upon its pivot. the upper gripping roller will either separate from or approach the lower roller. To cause this swinging movement of the frame 113 it is provided with a roller 116.at one end which is engaged by a device which will be later explained for the purpose mentioned. The pivotally hung frame 107 is held in normal relation to the crank arms 10:"). 106 in which it is hung by a spring 117 which holds a pin 10? against a stop pin 117' and the frame 113 is held in normal relation to the frame 107 by a spring 118 (Fig. 12). in which normal position the two gripping rollers are pressed together.
Under the action of cam 30. the frame 107 is swung rearward and downward through an arc of about 45 to the position shown in Fig. 16. This brings the roller 116 of the supplemental pivoted frame 113 in front of a finger 119 on a shaft 120. Shaft 120 is oscillated by cam 29 on the cam shaft through link 121 and forces the. finger 119 against the roller to tilt the frame 113 in a direction to separate the gripping rollers. as seen in Fig. 16 and thereby permit the downwardly moving sheet of paper to pass between them. Immediately above the shaft 120 is a short rocker shaft 122 provided with a curved finger 123, against the underside of which the roller 109 on the tail piece 108 of the transfer frame is adapted to lmpinge and ride when the transfer frame is returned to its forward position indicated generally in Fig. 5. hen the transfer frame arrives at its forward position, its apron 110 should be in a plane substantially tangent to the surface of the winding on the spindle and as the diameter of the winding increases with each layer, it is necessary to correspondingly change the angular position of the apron each time it swlngs forward. Accordingly provision is made for lowering the finger 123 as the layers are formed so that the front end of the transfer frame or the apron will be correspondingly elevated and thereby maintain its tangency with the surface of the winding. This movement of the finger 123 is accomplished by a cam 124 (Fig. 4:) on shaft 91. which. as before described. is driven by the gage shaft. Shaft 122 carrying the finger projects through the frame and carries a crank arm 125 having a pin at its extremity which bears against the edge of the cam 124. In this manner the finger 123 is lowered as each layer is wound.
The transfer frame carries at its righthand end a pulley 126 (Figs. 13 and 14) having a frictional face adapted to engage with the leather collar 18 on the chuck of the spindle. Fixed to pulley 126 is a pinion 127 engaging with an idler 128 and the idler in turn meshes with a gear 129, all of these gears on the outside of the end plate of the transfer frame. The shaft carrying gear 129 extends through the frame and carries another gear 130 which meshes with a pinion 131 on the end of the lower gripping roll 111. Gear 130 also meshes with a gear 132 which in turn engages a pinion 133 on the end of the upper gripping roller 112. From this arrangement of gearing it will be seen that when the friction pulley 126 is rotated. the two gripping rollers 111 and 112 will be rotated. The gear 132 is co-axial with the pivot of the supplemental frame 113 so that when said frame is tilted with respect to the transfer frame upon which it is mounted, and in order to separate the gripping rollers, the gear train will not be thrown out of mesh at any point.
When the transfer frame is swung forward to the position shown in Fig. 5 by the spring 104 which holds the roller on link 103 against the edge of cam 30, the friction pulley 126 arrives at a position 'very close to, but not touching the friction collar 18 on the chuck of the winding spindle. In order to bring these two surfaces into contact and thereby rotate the gripping rollers from the spindle, the cam 30 is provided with a supplemental cam 134 which is traversed b a finger 135on the end of the link 103 ig. 15). When this finger engages the cam 134, the roller on the end of the link is held out of contact with the edge of cam 30 and at the point 136 where a deep spot in cam 30 is presented to the roller on link 103. the finger encounters a step 137 in cam 134 which permits the link to move rearwardlysuddenly under the action of spring 104 to carry the transfer frame forward slightly and bring the friction pulley 126 into engagement with the leather collar on the spindle chuck,
and thereby cause the gear train and the gripping rollers to be driyen. This train is in motion only during the few turns necessary to wind the sheet upon the spindle; thereaftenby reason of the shape of cam 30 the transfer frame is moved rearward enough to separate the friction ulley .from the winding spindle, after w ich the transfer frame remains stationary until it is again swung rearward to the position shown in Fig. 16 before described.
In the lower central portion of the boxlike frame 64 is mounted another cross shaft 138 which is oscillated by cam 27 through link 139. To this shaft is fixed one edge of a spring metal plate 140 which extends across the machine hearly the full length of the shaft, its free upper edge rising to a point just beneath the knife bar said e e being provided with a series of deep slits 141 forming springdtongues. At the upper edge of the plate and on its front face 18 fixpd a tape or other friction strip 142. This plate and its mounting constitute a brake, the function of which will be later explained. J
Cotiperating with the winding spindle 15 is a' smoothing roller 143 (Figs. 1 and 5) mounted between arms 144 which are pivoted in brackets on an axis 145 located above and parallel to the winding spindle. During the winding operatidn, this roller 143 is adapted to rest against the front surface of the wound material, witha certain pressure determined by its weight or by a spring (not shown),' provided for the purpose. The function of this roller to perform which requires that it shall bear evenly at all points throu hout its length against. the winding on t e spindle, necessitates that it shall be of greatest diameter at the middle and taper toward its ends so that it will fit against the side of the winding when the winding and the winding spindle are sprung rearward at the middle by the tension of the many. strands of wire which are being wound thereon. The purpose of this roller will appear in the description of the operatlon.
The paper. which is delivered to the winding spindle in successive sheets by this machine, is cut from a continuous web which proceeds from a roll 146 mounted at the rear of the fnachine. It is understood that this roll is mounted in suitable anti-friction bearings and is )rovided with a suitable brake for controlling its momentum and maintaining a suitable tension on the web; these features, however, are not fully disclosed in this application. Embracing the roll is a frame 147 pivoted to swing on an axis 148 'and having at its free end a roller 149. This frame constitutes a take-up for the web and is urged to its rearward po sition by a spring 150, the limit of its movement being determined by a chain 151. The web of paper 152 leads from the roll around a fixed idle roller 153, thence around the roller 149. on the take-up and thence to the measuring and feeding rollers 67 to 70 over which it passes in the manner best shown in Figs. 16 to 20.
The rollers 67, 68 and 69 are relatively located so. that the web in passing over and under them as shown will embrace a large portion of their peripheries, the roll 68 havmg more than 180 of its surface in contact with the web. This distributes the frictional grip of the rollers over a large area of the web. making it possible to apply the required feeding force to the web without tearing it and thereby facilitating the handling of webs of thin and delicate paper and material.
In the description of the operation which follows it will be assumed that the web of paper is looped around the measuring roll-, ers and that its loose forward end is hanging opposite the knife edge, as shown in Fig. 19; that the transfer frame is in its rearward position, as shown in Fig. 16, with the grip in rolls 111 and 112 separated; that the ra e plate 140 is in its rearward position, as shown in Fig. 5, and that a layer of wire'on each of the several coils on the winding spindle has been completed and wrapped with paper and a new layer of winding on the various coils about to 00mmence. The rotation of the spindle and the traverse of the wire guides 57 cause the layer to be gradually formed. At the be ginning of the layer the measuring and feed ing rolls commence to turn by reason of the closing of clutch 76 under the action of cam 80, and a length of paper is fed downward past the knife between the gripping rolls 111 and 112, in front of the brake 140 and as far as necessary into the open space ()3 in the frame depending upon the length of paper-acquired at the given layer of the winding and also upon the number of turns which the sheet of paper is to make around the winding. Next, cam 29 permits the spring acting on shaft 120 to oscillate the finger 119 rearward; this allows the spring acting on the supplemental frame 113 to swing the latter forward and close the gripping rollers 111 and 112 upon the paper. thus drawing the paper tight between the gripping rolls and the feed rolls 69 and 70 and holding the paper against the cutting edge of bar 100. Next, cam 28 rocks the shaft 95 which throws the knife bar 93 forward and severs the paper, the upper or sex-- ered end thereof then falling forward upon the table 110 of the transfer frame in the position shown in Fig. 18. In falling or bending to this inclined position, the severed edge of the paper travels forward or toward the winding spindle and this is determined by the fact that the closed gripping rolls 111 and 112 occupy a rear oblique position with respect to the paper when the transfer frame is in this position, and exert a forward tension upon the upper end of the sheet which is sufiicient to cause the paper to fall into the position described. Next, the cam 30 allows spring 104 to swing the transfer frame forward until it is in the upright position shown in Fig. 19 where the upper end of the paper lying upon the apron 110 occupies a substantially horizontal position having been turned since it was cut throu h an arc of 90, and the forward edge of tfie paper is presented ,at a tangent to the winding upon the spindle, immediately back of the points where the various wires enter the coils. In moving to this position, the transfer frame is given a definite angular position to bring the edge of the paper tangent to the winding of the spindle, by the finger 123 which engages the roller 109 during the final movement of the transfer frame and determines the position of the apron in accordance with the diameter of the winding. The variations of this position are illustrated by a comparison of Figs. 19 and 20 where in the former case the inclination of the apron is downward to accord with the small diameter of winding on the spindle, while in the latter case the tilt of the apron is upward to cooperate with the nearly completed winding of substantially greater diameteia, During the forward motion of the transfer. frame. the cam controlling the knife permits the latter to move backward to the position shown in Fig. 5. Next, the cam which controls shaft 138 causes the brake plate 140 to swing forward until its upper taped edge rests against the paper along its full width. pressing it against the lower gripping roller 111 to furnish tension upon the sheet and keep it smooth while it is being drawn into the winding. Next, the supplemental cam 1 H cooperating with main cam 30 and operating through the finger 135 and link 103, permits spring 104 to throw the transfer frame slightly forward to bring the friction pul ley 126 and the friction collar 18 on the winding spindle into contact. The gear train is then actuated to drive the gripping rollers 111 and 112 in a direction to eject the forward edge of the paper into the winding so that the strands leading from the supply spools to the respective rolls on the spindle will simultaneously grip the presented edge of the paper and draw it into the winding. The peripheral speed of the spindle is slightly greater than that of the rolls 111 and 112 so that as soon as the edge of the paper is caught by the strands of wire, tension is immediately, applied to the area of the sheet between the spindle and the rolls. The full length of paper which has in the meantime been freely suspended below and behind the transfer frame and held at its upper edge only by the gripping rollers, will be wound upon the finished layers of wire as many times as may he predetermined by the length of the paper: the wire in the meantime at the end of each layer alternating with the wrappings of paper as indicated in the sectional view of one of the coils in Fig. 23. The size of a sheet of paper introduced into the winding by this machine when three or more wrappings are allowed for each sheet varies from 10 to 25 inches in length and may have a width from 10 to 24 inches, depending upon the number of coils which are simultaneously wound. The paper is exceedingly thin, and unless introduced into the winding under proper conditions will wrinkle or wind unevenly, especially at the high spindle speed which are required in order to turn out the product with rapidity. Hence,to control the sheet on its movement into the winding, I have provided the brake plate 140 which supplies tension and smooths the sheet just before it passes between the gripping rollers 111 and 112. In addition to this the upper gripping roll is of slightly greater diameter for the middle third of its length than at the end thirds, which causes the rollers to grip the middle portion of the sheet strongest. Thiscompensates for the curved shape of the winding spindle due to the tension of the wire strands thereon, which requires that the edge portions of the sheet shall yield more readily than the middle portion to keep that portion of the sheet between the gripping rolls and the spindle perfectly flat paper to from the instant that the spindle commences to pull upon the sheet. Furthermore, imme winding, it is pressed upon the roller 143, of tapered contour, which forces outward any entrapped air and irons or smooths the nally roduce the even hard foundation require ,7 for the next succeeding layer of wire. As soon as the paper is wound upon the spindle the brake recedes to its position shown in Fig. 5, the transfer frame returns to its position shown in Fig. 16 and the gripping rolls 111 and 112 are there separated by the finger 119 preparatory to a repetition of the operation when another layer of winding is finished.
In the former patented machine hereinbefore mentioned, the speed of the winding spindle was limited to that at which the paper could be successfully injected and wound into the helices and the normal winding speed was therefore comparatively low.
In the present machine while it is not pos-.
sible to introduce the paper at much higher spindle speed than in the former machines, yet means have been provided for decreasing the total winding time of the coils by driving the spindle at a considerably higher speed at all times during the formation of a layer except while the paper is being inserted and wound. In other words, each layer of wire is, for approximately three quarters of its length, wound at several thousand revolutions per minute, while during the winding of the remainin quarter of the layer the speed is gradua 1y reduced until at the end of the layer the rate is approximately one-fourth o the normal windings eed, at which (point the paper is injecte and interwoun with the wire. These operations are automatically performed, as will now be ex lained. Referring to Figs.
- 1, 5, 7 and 21, t e main cam shaft 26 makes one rotation during the winding of each layer of wire. When the shaft has completed approximately three quarters of a rotation, which corresponds to three quar ters of the layer of wire, the shorter arm 48 on the cam shaft strikes the set screw in the upper end of the arm 51 on trip shaft 42 and rocks the latter shaft to release the.
hook 41 from arm 43, permitting the main clutchcontrolling shaft to rock under the ull of spring 45 to disconnect the power rom the machine, as before explained. The machine then continues to run under its momentum and gradually slows down during the winding of the st quarter of the layer of wire. At the end of the layer when the desired speed of the spindle is attained,
- the paper is injected in the manner above explained and immediately thereafter the arm 49 on.the cam shaft 26 strikes the set screw in the upper end of the arm 52, which has in the meantime been thrown into the iately after the sheet enters the path of the pin in the arm 49 by the rocking of shaft 44. This engagement with the arm 52 rocks shaft 44 in the opposite direction until it is locked by the hook 41 and the power is again connected with the machine, whereupon the speed immediately increases to the maximum and continues until three qiliarters of the next layer of wire is wound, t e power being then again disconnected, as before, to repeat the operation. The capacity of this machine is therefore not only increased by the provision of mechanism for handling wide and long sheets of paper required in the simultaneous winding of a large number of coils, but also by reason of the provision for driving the winding spindle at a very much increased s eed during {he larger part of the formation of each a er.
When the predetermined number of layers of wire have been wound, the machine stops by reason of the hook 41 being struck by pin 40 carried by the gage shaft. Before the winding of the next stick of coils begins, the gage shaft 33 is turned backward hand to the zero position which sets the pin 40 back the number of steps corresponding to the number of layers to be wound and also resets the finger 123 to the beginning point of its movement. Attention is called to the disposition of the sheet in this machine while it is being measured from the web, cut and transferred to the spindle. By allowing the forward edge of the sheet to hang freely from the time the sheet is measured off until it is presented to the spindle, the necessity of carriages, guides and supports to control the sheet are avoided and it becomes possible to handle long sheets of material at high speed.
Fi 22 shows a sectional view of the stic of finished coils, the individual coils being represented by a, a, etc., and the intervening spaces, occupied by the paper only, by b, 6, etc., the whole structure being wound upon a tubular core a which is passed over the winding spindle and clamped thereto by the chuck 16.
I claim:
1. In a winding machine, the combination of a winding spindle, means for continuously winding thereon a windable body, means for intermittently winding thereon a second windable body and automatic means for winding at reduced speed while both bodies are being wound on the spindle.
2. In a winding machine, the combination of a spindle, means for continuously. winding strand material thereon, means for intermittently winding sheet material thereon and means for running at a reduced speed while both materials are being wound.
3. In a winding machine, the combination of a spindle, means for automatically disconnecting the driving power thereof at automatic means for holding said clutch open intermittently forpredetermined periods.
5. In a winding machine, the combination of a winding spindle, means for winding strand material in superposed layers there on, means for winding sheet material between the layers and means for automatically reducing, without stopping, the speed of the spindle, during the winding of the sheet material.
6. In a maEhine for winding strand mate- .rial in superposed layers, the combination of a winding spindle, a clutch controlling the application of power thereto, a shaft adapted to make one rotation for each layer of winding, two arms carried by said shaft at different angular positions thereon and means whereby said arms will successivel 0 en and close said clutch during each rotation of said shaft.
7. In a machine for winding sheet material, the combination of a winding spindle, and means for suspending a sheet of material from one edge and presenting said edge to the spindle.
8. In a machine for winding sheet material, the combination of a windingspindle, means for severing sheets from a continuous web, and means for sus ending the sheets from their last severed e ges and presenting said edges first to the winding spindle.
9. In a. machine for winding sheet material, the combination of a winding s indle, a sheet measuring and cuttin mecliiinism and a transfer mechanism a' apted to deliver the last severed edge of the sheet first to the spindle.
10. In a machine for windin sheet material, the combination of a win ing spindle a transfer mechanism comprising a pair of bodily movable gripping rolls adapted to present the forward edge of a sheet to the spindle and means for thereafter rotating said (gripping rolls to feed the sheet to the spin a.
11. In a machine for windin sheet material, the combination of a winding spindle, a pair of gripping rollers bodily movable to convey the sheet toward the spindle and gearing between the spindle and rollers, adapted to be brou ht into mesh by said movement of the to are, to rotate the latter and feed the sheet to the spindle.
. 12. In a machine for wind' sheet mate-. rial, the combination of a wading a sheet feeding and cutting mechanism and a transfer device comprising a pair of rollers and adapted to convey a sheet from said mechanism to the spindle, means for separating and closing said rollers while the device is in one position, to admit and grip the sheet between them,and means for rotating said rollers while the device is in its other. position, to feed the sheet to the spindle.
13. In a machine for windin sheet mate rial, the combination of a win ing spindle, a. pair of gripping rollers, means for separating the ro lers, means for feeding a sheet of the material between the rollers, means for closing the rollers to grip the sheet, means for moving the rollers with the sheet toward the spindle, a gear train between the rollers and spindle brought into mesh by the approach of the rollers to the spindle, whereby the rollers are caused to feed the sheet to the spindle.
14. In a machine for winding sheet material, the combination of a winding spindle, a transfer mechanism comprising a pair of separable gripping rollers, a sheet feeding mechanism located above the transfer mechanism and adapted to feed asheet downward between the separated gripping rollers, means for closing the rollers to grip the sheet, and means for severing the sheet above the rollers. y
15. In a machine for winding sheet mate- .rial, the combination of a winding spindle,
a. sheet feeding mechanism from which the fed sheet is vertically suspended, a pair of gripping rolls one located on each side of the plane of the suspended sheet, means for clamping the sheet between the rolls with the axes of the latter in a plane oblique to the plane of the sheet, means for severing the sheet above the gripping rolls and means for swinging the rolls to a osition where their axes will be substantial y in a vertical plane.
16. In a winding machine, the combination of a' winding spindle, feeding rolls for a continuous strip of sheet material, sever ing means fixedlylocated with respect to the rolls and means for driving said rolls intermittently and for successively increasing periods.
17. In a machine for windin sheet material, the combination of a win ing spindle, rotary rolls for feeding and measuring sheets from a continuous strip, a power shaft, driving connections, Including a clutch, between the power shaft and rolls and means for intermittently closing said clutch for successivel increasing periods.
18. In a machine or winding sheet material, the combination of a winding spindle, a sheet transferring mechanism comprising an oscillating frame and a sheet holding member pivoted thereto, and means for ers one of which is mounted u on eachframe, and means operative at eac oscillation of the oscillating frame to swing the ivoted frame to open and close the rollers or the purpose described.
20. In a machine for windin sheet material, the combination of a win ing spindle, a air of gripping and feeding rolls, gearing a apted to connect the spindle and rolls to drive the latter from the former and means for imparting two motions to the gripping rolls one motion to position the sheet for delivery to the spindle and the other to engage said gearing to drive the rolls to deliver t e sheet to the spindle.
21. In a machine for windin sheet material, the combination of a win ing spindle and a pair of gripping rolls through which the sheet passes, one of said rolls having an intermediate portion of its gripping surface of greater diameter than the remainder.
22. In a machine for windin sheet ma- 7 terial, the combination of a win ing spindle and apair of grip ing rolls through'which the sheet passes, t e middle portion of the gripping surface of one of the rolls being of greater diameter than the end portions.
23. In a machine for winding strand and sheet material, the combination of a windin spindle, means for directing a plurality 0% strands to successive points along the length of said spindle, means for delivering sheet -material to the spindle and a smoothing roller arran d parallel to the s indle and adapted to. ar against the sur ace of the material on the spmdle, said roller having a surface conformm to the defamation of the spindle due to t e tension of the material during the winding operation.
24,. n a machine for winding strandand sheet material, the combination of a windin spindle, means for directing a plurality o strands to successive points along the length of said spindle, means for delivering sheet material to the spindle and a smoothin roller arrangzd parallel to the s" indle and adapted to ar against the'sur ace of the material on the sp1ndle, saidrollerhavin a surface ta ring toward its axis from t e middle to t e extremities for the purpose set forth.
25. The process of alternately windin strand and sheet material into a coil whic consists in winding one of said materials alone at a given speed and then winding both materials simultaneously at a different speed.
26. The process of alternately winding strand and sheet material into a coil which consists in winding the strand material alone at a given speed and then winding both the strand and sheet materials simultaneously at a materially reduced s eed.
27. In a machine for windin slieet material, the combination of a winding spindle, means for feeding a continuous web of material toward the spindle, means for severing sheets from'the web, and means for presenting the last severed edge of a sheet to the winding spindle first.
28. In a machine for winding sheet material, the combination of a winding spindle, a sheet feeding mechanism from which the fed sheet is vertically-suspended, a pair of gripping rolls one located on each side of the plane of the suspended sheet, means for severing the sheet above the gripping rolls and means for clamping the sheet between the rolls with the axes of the latter in a plane oblique to the lane of the sheet whereby a portion of t e sheet is bent for presentation to the spindle.
29. In a winding machine, the combination of a windin spindle, sheet feeding mechanism, comprisin a plurality of spaced rolls, over which the s eet is successively led in diverse directions, means for positively driving said rolls at uniform peripheral speed and means located beyond the rolls for positively gripping the sheet and imparting a longitudma tension to that portion of the sheet passing over the said spaced rolls.
30. In a sheet winding machine a sheet feeding mechanism comprising three parallel positivel driven rolls, spaced apart and so placed 'relatively that the sheet in passing around them successively will emrace more than 180 of the circumference of one of them, in combination with means located beKond the rolls for positively ripping the s eet and im artin a Ion 'tu inal tension to that portio of tEe sheet over the said spaced rolls.
31. In a machine for windin sheet material, the combination of a win n spindle, a pair of gripping and feeding ro s, a gear train through which the rolls can be driven from the spindle and means for relatively moving the rolls and spindle in order to bring the gear train into mesh and thereby drive the rolls from the spindle.
In witness whereof I subscribe my signature.
JAMES C. ANDERSON.
passing
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474755A (en) * 1947-09-12 1949-06-28 Airdesign Inc Coil winding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2474755A (en) * 1947-09-12 1949-06-28 Airdesign Inc Coil winding machine

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