EP0023391A1 - Machine à bobiner et procédé de bobinage - Google Patents

Machine à bobiner et procédé de bobinage Download PDF

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Publication number
EP0023391A1
EP0023391A1 EP80302205A EP80302205A EP0023391A1 EP 0023391 A1 EP0023391 A1 EP 0023391A1 EP 80302205 A EP80302205 A EP 80302205A EP 80302205 A EP80302205 A EP 80302205A EP 0023391 A1 EP0023391 A1 EP 0023391A1
Authority
EP
European Patent Office
Prior art keywords
spool
speed
clutch
traverse
carriage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP80302205A
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German (de)
English (en)
Inventor
David Parr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
David Parr and Associates Ltd
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David Parr and Associates Ltd
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Filing date
Publication date
Application filed by David Parr and Associates Ltd filed Critical David Parr and Associates Ltd
Publication of EP0023391A1 publication Critical patent/EP0023391A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/2848—Arrangements for aligned winding
    • B65H54/2854—Detection or control of aligned winding or reversal
    • B65H54/2857—Reversal control
    • B65H54/2866—Reversal control by detection of position, or distance made of the traverser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H55/00—Wound packages of filamentary material
    • B65H55/04—Wound packages of filamentary material characterised by method of winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
    • B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/37—Tapes

Definitions

  • This invention relates to a spooling machine for winding elongate material, particularly but not exclusively metal tape or wire onto a take-up spool.
  • a spooling machine in accordance with a first aspect of the present invention comprises, a take-up spool carrier, a pinch wheel capstan drive for supplying material to be spooled to a spool carried in use by said carrier, and an electric torque motor for driving said carrier, whereby, in use, the take-up spool rotational speed is determined by the pass speed of the material supplied to the spool by said pinch wheel capstan drive, and the tension of the material being spooled is determined by the power input to the torque motor.
  • the machine includes means whereby the speed of the capstan drive can be varied, to vary the pass speed of the material being spooled.
  • mean ⁇ whereby upon initiation of the spooling operation there is a short delay after energisation of the torque motor at its chosen value for the spooling operation, before operation of the capstan drive at its chosen speed for the spooling operation the capstan drive speed being increased automatically and progressively from zero to the chosen speed during said delay, whereby initially spooling occurs at a high, but decreasing tension until such time that the speed of the capstan drive increases to said chosen value.
  • a further prior proposal for reversing the direction of traverse is the use of a double helix screw thread on the lead-screw.
  • the double helix arrangement is also disadvantageous in that it is slow to operate, requiring a dwell point where the drive is transferred from one helix to the reverse helix and is also mechanically complex.
  • a traverse mechanism including first and second clutches, the first clutch being engaged and the second clutch disengaged for traverse in one direction, and the second clutch being engaged and the first clutch being disengaged for traverse in the opposite direction.
  • said take-up spool carrier is carried on a take-up spool carriage and the machine further includes a captive nut carried by said carriage, a rotatable lead-screw co-operating with the nut and held against axial movement whereby as the lead-screw rotates the nut is caused to move axially along the length of the lead-screw, and a lead-screw drive mechanism, the lead-screw drive mechanism comprising means driving the input of said first clutch in one direction, means driving the input of said second clutch in the opposite direction, and a combined output member for the first and second clutches, the lead-screw being driven from the combined output member of the first and second clutches, and being driven in one rotational direction, to move the carriage in one linear direction, by engagement of the first clutch with the second clutch disengaged, so that the combined clutch output member is driven by the first clutch input member, and the lead-screw being driven in the opposite rotational direction to move the carriage in the opposite linear direction by engagement of the second
  • said first and second clutches are electromagnetic clutches.
  • said means driving the input of said first clutch includes a first electric motor and said means driving the input of said second clutch includes a second electric motor.
  • said first and second electric motors are constant speed motors, and share a common speed control mechanism whereby carriage traverse speed can be altered, the common control mechanism altering the speed of both the first and the second electric motors simultaneously and by the same amount.
  • said means driving the input of said first clutch includes an electric motor and said means driving the input of said second clutch includes said electric motor and a drive reversing mechanism whereby said electric motor drives both the first clutch input and the second clutch input at the same rotational speed but in opposite rotational directions.
  • lay is used herein to refer to the positioning of axially adjacent turns of a layer of materials wound onto the take-up spool.
  • wide lay is where there is a gap between axially adjacent turns of a width substantially equal to the material width.
  • Narrow lay is where there is zero, or substantially zero gap between axially adjacent turns.
  • An overlap lay is where axially adjacent turns of tape actually overlap one another, and in most applications an overlap lay is extremely undesirable, and is to be avoided since it results in damage to the marginal edges of the tape.
  • the lay of the winding is of course determined by the relationship between the rotational speed of the take-up spool and the traverse speed of the take-up spool.
  • Spools of wound material are often subject to rough handling during transit, and a problem which is often encountered is a spool being dropped onto one axial end. If the spool has been wound with a wide lay then particularly in the case of wound tape the gap between the marginal edges of the adjacent turns of the tape acts in effect as a shock absorbing space and minimizes the risk of damge to the marginal edges of the turns. However, in taking up the gap between the axially adjacent turns the tension in the turns is lost, and the winding on the spool becomes very loose, and adjacent turns, and even adjacent layers of turns can become entangled rendering the spool substantially impossible to unwind at a later date.
  • the narrower lay throughout the majority of the axial length of the spool maximizes the length of material which can be contained by the spool, and avoids axial collapse of the turns as can be encountered with a wider lay.
  • the wider lay at the two axial ends of each layer of turns provides a shock absorbing effect to minimize damage, in the case of tape, marginal edge damage, to the intermediate narrow lay turns, the axial extent of the turns wound at the wider lay being insufficient to result in significant tangling as a result of axial collapse.
  • a spooling machine in accordance with this further aspect of the present invention comprises means operable during relative traverse movement of the spool and material being wound as the material is wound adjacent the axial ends of the spool, to produce a variation in the relationship of the speed of traverse to the speed of rotation of the spool, such that the spacing between adjacent turns of the material being wound is greater adjacent the axial ends of the spool than over the remainder of the spool.
  • the spooling machine comprises a reciprocable carriage for carrying a take-up spool in use, means for reciprocating the carriage, and means sensing the position of the carriage in relation to the input path of material to the take-up spool in use, said sensing means in use controlling the speed of traverse of the reciprocable carriage in a manner to increase the speed of traverse at those points in the movement of the carriage where material is being wound adjacent the two axial ends of the take-up spool.
  • This further aspect of the present invention also material resides in a spool of / wherein the lay of the turns of each layer is wider adjacent the axial ends of the spool.
  • the machine includes a freestanding base 11 to the rear of which is a control console 12 and in front of which is a take-up spool carriage 13.
  • the carriage 13 is reciprocable to the left and right (in Figure 1)relative to the base 11 and the console 12 through a stroke which can be adjusted to be equal to the length of the core of a take-up spool 14.
  • the carriage 13 is formed with a pair of downwardly extending bearing lugs 15 at front and rear, each pair of lugs slidably engaging a support rod 16 carried by the base 11.
  • the rods l6 and lugs 15 form the sliding support for the reciprocatory movement of the carriage 13.
  • a rotatable lead-screw 17 Parallel to the rods l6 and lying therebetween is a rotatable lead-screw 17 which is held against axial movement relative to the base 11, and which is engaged between its ends by a nut 18 secured to the carriage.
  • the nut 18 is non-rotatable, and thus as the lead-screw 17 rotates the nut 18 is caused to traverse the length of the lead-screw carrying the carriage 13 with it along the rods 16.
  • a bearing block 19 extends upwardly from the carriage 13 in front of the console 12 and supports an electric torque motor 21 the output shaft 22 of which extends through the block 19 parallel to the plane of sliding movement of the carriage.
  • the shaft 22 is connected to a spool carrier 23 which detachably supports the spool l4 with the axis of the spool l4 coincident with the axis of the shaft 22.
  • the front face of the console 12 presented to the carriage 13 carries nine control knobs 24, 25, 26, 27, 28, 29, 31, 32 and 33 each of which bears a reference mark which during operation of the knob traverses a scale or series of markings on the console.
  • Exposed on the right-hand face of the control console are a plurality of pulleys which define the path which tape takes from the exterior of the machine to the take-up spool 14.
  • Tape for example nichrome tape having a width of 0.040 inches and having a thickness of 0.002 inches reaches the spooling machine from a source, which may be a bulk reel of tape, or may be a previous tape processing apparats, for example an annealing oven and is indicated at 34 in Figure 2.
  • the tapa34 passes over a first freely rotating pulley 35 at the upper right of the side face of the console 12 and then passes downwardly beneath a second freely rotating pulley 36 at the lower right of the side face.
  • the tape 34 passes through a pinch wheel capstan drive comprising a driven capstan roller 37 and an idler pulley or pinch wheel 38/is spring pressed against the capstan roller 37 to press the tape 34 firmly into contact with the roller 37.
  • the tape 34 is looped over a "dancer" pulley 39 which is spring urged along an arcuate path 41 towards the rear of the console 12.
  • the tape 34 passes beneath a freely rotating largerdiameter guide pulley 42 and beneath a smaller diameter freely rotating pulley 43 to the take-up spool 14.
  • the tape 34 is driven through the spooling machine by the action of the capstan drive defined by the capstan roller 37 and the pulley or pinch wheel 38.
  • the drive roller 37 is driven by an electric motor housed within the console 12 the speed of the electric motor being controlled by a number of factors, one of which is the setting of the control knob 26.
  • the setting of the control 27 controls the setting of a variable transformer whereby power is supplied to the torque motor 21 and thus the power output of the motor 21 is determined by the setting of the control knob 27.
  • the tape When tape is being wound onto the spool 14 the tape is not drawn through the machine by the torque motor 21, but is driven through the machine at a constant speed by the capstan drive 37, 38.
  • the power output of the torque motor 21 determines the tension in the tape between the take-up spool 14 and the capstan drive 37,38.
  • the speed of rotation of the take-up spool 14 will be determined by the pass speed of tape through the machine, and this in turn is determined by the speed of the capstan drive.
  • the torque motor attempts to rotate the spool l4 faster than is permitted by the pass speed of the tape, and thus tension in the tape is maintained.
  • the amount of torque generated by the motor 21 is dependent upon the power supplied to the motor 21 and this in turn therefore determines the tension in the tape.
  • the turning moment of the spool decreases (because the increase in winding diameter increases the radius of action insofar as tape being drawn onto the spool is concerned) and the decrease in turning moment has a compensating effect compensating for the increase in torque as the speed of the spool decreases, so that the overall effect, between the beginning and the end of a spooling operation, on the tension in the tape is substantially zero.
  • the position of the pulley 43 in relation to the axis of the spool 14 is adjustable to accommodate different dimensions of spool to keep the pulley 43 as close as possible to the spool. However, during a spooling operation the position of the pulley 43, once set, is maintained throughout the spooling operation.
  • the carriage 13 is traversed in a reciprocatory manner as tape is wound onto the spool 14.
  • the spool 14 is moved axially in relation to the path of the tape.
  • a lead-screw and nut arrangement is provided for traversing the carriage 13, but of course the direction of traverse must be reversed each time the incoming tape reaches an end flange of the spool 14.
  • the change in direction of traverse is achieved electronically, and the drive mechanism for the lead-screw 17 is illustrated diagrammatically in Figure 3.
  • the lead-screw 17 is supported in bearings in the base 11, and adjacent one end is formed with a pulley 44 around which extends a toothed drive belt 45.
  • the belt engaging surface of the pulley 44 is correspondingly toothed so that a non-slip drive connection is established.
  • the belt 45 extends around a similar toothed pulley 46 secured to the output members 47, and 48 of first and second electromagnetically operated clutches 49, 51.
  • the clutches 49, 51 are positioned with their axis co-extensive, and the input members 52, 53 of the clutches are supported by fixed bearing brackets 54, 55 secured to the base 11.
  • Each clutch input member 52, 53 carries a toothed pulley 56, 57 the toothed pulley 56 being engaged by a toothed belt (not shown) which also extends around a correspondingly toothed pulley on the output shaft of a respective electric motor.
  • the toothed pulley 57 of the second electromagnetic clutch 51 is similarly driven from a further respective electric motor, the two electric motors being identical, and always being operated at the same speed.
  • the two electric motors are controlled by a single control mechanism the setting of which is adjustable by the control knob 25.
  • the two electric motors rotate their respective pulleys 56 and 57 in opposite directions, and it will be recognised that when the electromagnetic clutch 49 is energised then the combined clutch output member 46, 47, 48 will be driven in one direction, provided that the clutch 51 is de-energised, whereas when the clutch 49 is de-energised and the clutch 51 is energised then the combined output member 46, 47, 48 will be driven in the opposite direction.
  • the direction of rotation of the lead-screw 17 is determined by which of the two clutches 49, 51 is energised.
  • the appropriate micro-switch is operated by the linkage to de-energise the clutch 49 and to energise the clutch 51 so that the lead-screw 17 is immediately rotated in the opposite direction returning the carriage 13 to the left.
  • the other micro-switch is operated, by way of said linkage, to de-energise the clutch 51 and re-energise the clutch 49.
  • control knob 29 is provided, rotation of the control knob 29 causing the direction of traverse of the carriage 13 to reverse irrespective of the point along the axial length of the spool at which tape is being wound onto the spool.
  • the knob 29 either operating to aforementioned microswitches or alternatively operating switches Ln parallel with said microswitches.
  • control knob 31 may be used to accurately set the point of traverse reversal at the left-hand end of the traverse of the carrige 13
  • control knob 32 may be used to accurately set the point of reversal at the right-hand end of the traverse.
  • the control knobs 31 and 32 are mechanically linked to the arrangement of linkage and micro- switches, and effect minute adjustments in the position of the linkage in relation to the microswitches thereby to effect precise control over the points in the traverse of the carriage 13 at which the linkage operates the microswitches.
  • FIG. 4 An alternative traverse mechanism drive arrangement is illustrated in Figure 4.
  • the arrangement includes an electric motor 71 the output shaft 72 of which carries a pulley wheel 73 and a gear wheel 74.
  • the gear wheel 74 is part of a reversing gear box 75 and meshes, within the gear box 75, with a second gear wheel 76.
  • a shaft 77 coupled to the gear wheel 76 carries a pulley 78 the diameter of which is identical to the diameter of the pulley wheel 73.
  • a drive belt 84 extends around the pulley wheels 73 and 81 so that the shaft 79 is driven by the pulley wheels 73, 81 and the belt 84 in the same rotational direction as the shaft 72.
  • the diameter of the pulley wheel 81 is greater than the diameter of the pulley wheel 73 by an extent calculated to achieve a five to one gearing reduction between the shaft-72 and the shaft 79.
  • the gear wheels 74 and 76 are such that the shaft 77 rotates at the same rotational speed as the shaft 72, but in the opposite rotational direction.
  • Parallel to the shaft 77, and having its axis co-extensive with the axis of the shaft 79 is a shaft 85 which, at one end, is in driving engagement with a pulley wheel 86 and at its opposite end is in driving engagement with the input member 88 of a second electromagnetic clutch 87.
  • the relative diameters of the pulley wheels 78 and 86 are such that again a.five to one reduction in gear ratio occurs between the shaft 77 and the shaft 85.
  • the output members of the clutches 82 and 87 are interconnected, to constitute a single output member 89.
  • the speed of rotation of the output member 89 will thus be equal to the rotational speeds of the shaft 79 and the shaft 85, but the direction of rotation of the output member 89 will be determined by which of the first and second clutches 82, 87 is energised at any given time. Assuming that the clutch 82 is energised and the clutch 87 is de-energised then the member 89 will rotate with the shaft 79 and conversely when the clutch 82 is de-energised and the clutch 87 is energised then the output member/ 89 will rotate with the shaft 85.
  • a drive belt 91 couples the output member 89 and a lead-screw 17 of the traversing mechanism so that the lead-screw 17 is driven in a direction determined by the direction of rotation of the output member 89.
  • the drive belt 91, and the drive belt coupling the pulleys 73 and 81, and 78 and 86 are toothed drive belts so that inaccuracies in the operation of the traverse mechanism, arising from slippage between the belts and the pulleys, is obviated.
  • the motor 71 again drives a pulley wheel 73 through the intermediary of an output shaft 72.
  • a shaft 79 is positioned parallel to the shaft 72 and is driven from the shaft 72 by way of the pulley wheel 73, a drive belt 84, and a pulley wheel 81 carried by the shaft 79.
  • a five to one reduction in rotational speed is achieved between the shaft 72 and the shaft 79 by appropriate choice of the diameters of the pulley wheels 73 and 81. There is of course no change in the rotational direction.
  • the shaft 79 is coupled to the input member 83 of the first electromagnetic clutch 82, the clutch 82 sharing a common output member 89 with the second electromagnetic clutch 87.
  • the input member 88 of the clutch 87 is driven by a shaft 85 having its axis co-extensive with the axis of the shaft 79.
  • the lead screw f'7 of the traverse mechanism is again driven from the output member 89 by way of a toothed drive belt 91.
  • the shaft 89 carries a second pulley wheel 92 which drives a pulley wheel 93 through a drive belt 94.
  • the pulley wheel 93 is secured to a shaft 95 parallel to the shafts 79 and 85, and the pulley wheels 92 and 93 are of the same diameter so that there is no change in rotational speed, or rotational direction, between the shaft 79 and the shaft 95.
  • the shaft 95 At its end remote from the pulley wheel 93 the shaft 95 carries a gear wheel 96 which meshes with a similar gear wheel 97 carried by the shaft 85.
  • the shaft 85 is caused to rotate in the opposite direction to the shaft 95, and the gear wheels 96 and 97 are so arranged that there is no change in rotational speed.
  • the control knob 24 ( Figure 1) is merely an on-off switch for the machine. When the knob 24 is in its off position then none of the control circuits or motors of the machine can be energised. When the knob 24 is in an on position indicator light 24a is illuminated, and the control circuits of the machine are energised. However, none of the motors are at this stage energised. The indicator lamp 24b is illuminated whenever the machine is connected to a power supply.
  • the control knob 28 is the start switch of the machine, and provided that control knob 24 is in its on position then rotation of the knob 28 to the start position will supply power to the torque motor 21, the one or two electric motors of the traverse mechanism, and the drive motor of the capstan drive 37, 38.
  • variable resistor The effect of the variable resistor is to ensure that while the motor 21 and the traverse motors are operated at their predetermined power setting the capstan motor is operated at a considerably reduced power setting which over the short delay period rises back to the predetermined power setting.
  • the capstan drive motr starts slowly, and over the period of the delay, which may only be two or three seconds, runs up to its predetermined operating speed.
  • the reason for this is that if the capstan motor is allowed to operate immediately at its predetermined speed, then the torque motor 21 may not have had time to apply sufficient torque to the spool 14 to maintain tension in the tape, and a loop of tape would be formed between the capstan drive roller 37 and the spool 14.
  • the delay provided by the start control knob 28 and its associated mechanism ensures that the spool 14 will take up the whole of the throughput of tape from the capstan drive from the instant that the machine is renderred operative.
  • a further reason for such a "start-up" procedure is that where the machine receives tape from an annealer then a sudden increase in speed at the capstan drive can stretch the hot tape in the annealer since the necessary rapid increase in tape speed will be resisted by the inertia of tape supply feeding the annealer. Since the traverse .................................... electric motor(S)are also immediately operated at their predetermined power setting the lay of the turns wound initially will be wider than required for the remainder of the winding operation, and the width of the lay will decrease as the speed of the capstan drive increases towards its predetermined value.
  • control knob 26 is ganged to the control knob 25 so that when an adjustment is made in the capstan drive speed by means of the knob 26 then a corresponding adjustment is made in the speed of operation of the traverse drive motor(s ⁇ to maintain the width of the lay constant.
  • the ganging of the control knobs 26, 25 is a one-way ganging since the control knob 25 can be operated to adjust the speed of operation of the traverse drive motor(s) without affecting the speed of operation of the capstan drive motor.
  • the manner in which the two controls are ganged is as follows.
  • the controls 25 and 26 are rotatable potentiometers, each including a spindle to which the respective control knob 25, 26 is secured, and a casing which is normally held stationary relative to the spindle. Rotation of the spindle relative to the casing varies the setting of the potentiometer.
  • the casing of the potentiometer of the control knob 26 is fixed relative to the console 12, and the spindle linking the control knob 26 to the potentiometer mechanism carries a pulley wheel.
  • the casing of the potentiometer associated with the control knob 25 is not fixed relative to the console 12, and can rotate.
  • This casing carries a further pulley wheel, and the pulley wheel of the spindle of the control knob 26 is linked to the pulley wheel of the casing of the potentiometer of the control knob 25 by means of a loop of non- extensible cord the two runs of which between the two pulleys are crossed so that a clockwise rotation of the control knob 26 results in a counter-clockwise rotation of the caang of the potentiometer normally controlled by the control knob 25.
  • the relative diameters of the two pulley wheels determines the angular extent through which the casng of the potentiometer normally controlled by the knob 25 is moved for a given angular movement of the knob 2 6.
  • the lay of tape on the spool l4 is an important criteria since a wide lay, that is to say where the gap between adjacent turns of a layer is substantially equal to the width of the tape provides good shock absorbing qualities in a wound spool, but has associated disadvantages.
  • the shock absorbing qualities are important during handling of a wound spool, since they minimize the danger of the marginal edges of the turns of tape being damaged by impact with one another if the spool is subject to an axial shock.
  • An alternative winding is a narrow lay in which there is substantially no gap between axially adjacent turns of each layer.
  • the narrow lay maximizes the capacity of the spool, and overcomes to a large extent the problem of turns overlapping with one another and becoming entangled if the spool is subject to an axial shock.
  • it has the disadvantage that if the spool is subject to an axial shock then the shock is absorbed by the marginal edges of the turns impacting against one another and thus there is a significant risk of damage to the marginal edges.
  • the axial extent of the wider lay turns at opposite axial ends of the spool is relatively small, so that little or no entanglement occurs as a result of absorbtion of the axial shock.
  • the capacity of the spool is only slightly less than that of a spool wound completely with turns of narrow lay.
  • the lay of the turns is, as will be recognised from the aforegoing description, determined by the relationship of the capstan drive speed to the traverse motor drive speed.
  • the lay can be varied manually by altering the setting of the control 25 which operates a potentiometer controlling the power supply to the traverse drive motor(s).
  • the control 25 which operates a potentiometer controlling the power supply to the traverse drive motor(s).
  • the potentiometer of the control knob 25 provides the primary adjustment of the speed of the traverse drive motor(s).
  • a further control knob 33 is linked similarly to a potentiometer, the potentiometer of the control knob 33 being electrically in parallel with the potentiometer with the control knob 25.
  • a further potentiometer 58 which has a controlling effect on the speed of the drive motor6)
  • the potentiometer 58 it will be recognised that during normal operation of the spooling machine the power supplied to the traverse drive motor(s) is determined by the settings of the control knobs 25, 33.
  • the linkage operates the traverse reversal micro-switches as the tape reaches an end flange of the spool, the linkage also serves to operate, prior to the tape reaching the end flanges, a pair of reed switches which short out of the control circuit the potentiometer controlled by the knob 25.
  • the reed switches are set to be operated by the linkage when the tape is within perhaps 1 ⁇ 4 of inch from an end flange of the spool 14.
  • the traverse motion is then reversed and the speed increase in maintained for the first t inch of the travel of the tape away from the end flange whereupon the reed switch is de-energised and the potentiometer of the control knob 25 is brought back into circuit and the speed of the traverse motor drops to the predetermined speed.
  • the winding then continues at the predetermined traverse speed until the opposite end flange is approached whereupon a second reed switch again short circuits the potentiometer of the knob 25 for the final 1 ⁇ 4 inch of travel, the traverse is reversed, and the speed increase is maintained for the first 1 ⁇ 4 of an inch of the return travel whereafter the potentiometer of the control knob 25 is put back into circuit.
  • the speed increase is of course determined by the setting of the potentiometer of the knob 33.
  • the speed increase of the traverse drive motow is not, of course, accompanied by an increase in the speed of the capstan drive motor.
  • the potentiometer 58 is provided.
  • a synthetic resin finger 59 is lightly biased into contact with the tape wound on the spool 14.
  • the finger 59 is carried by an arm 61 coupled to the control spindle of the potentiometer 58.
  • the casing of the potentiometer 58 is secured to the bearing block 19, and thus as the tape diameter on the spool 14 increases the finger 59 and thus the arm 6l are moved.
  • the arm 6l is moved angularly with respect to the potentiometer 58 and adjusts the setting of the potentiometer 58.
  • the potentiometer 58 effects a controlling function on the power supplied to the traverse drive motor(s), and is electrically in series with the parallel combination of the potentiometers controlled by the knobs 25 and 33.
  • the setting of the potentiometer 58 has, in relation to the traverse drive motors, a modifying effect on the power setting determined by the potentiometers of the knobs 25, 33.
  • the setting of the potentiometer 58 is altered to reduce the power supplied to the traverse drive motors)so that the speed of traverse is reduced to maintain the lay of turns on the spool constant not withstanding that the speed of rotation of the spool 14 is dropping.
  • the tape can be threaded through the machine and attached to an empty spool, the power switch 24 can be put into the on condition, and the spooling operation can then be initiated by operation of the control 28. Thereafter, provided that the tape is constant in its dimensions and properties throughout its length the spooling operation will continue without alternation to the setting of any of the controls until the spool is full.
  • the spool-full condition is sensed also by the finger 59 which, in addition to operating the potentiometer 58 operates a micro-switch which breaks the power supply to all of the motors of the apparatus.
  • the point of operation of the micro-switch is adjustable to facilitate the use of different diameters of spool, and the knob (not shown) for adjustment of the operating point of the micro-switch can be calibrated, for a given tape dimension, in terms of the weight of tape on a spool.
  • the knob (not shown) for adjustment of the operating point of the micro-switch can be calibrated, for a given tape dimension, in terms of the weight of tape on a spool.
  • the full condition of the spool relates to a predetermined weight of tape on the spool. Since spools of tape are normally sold by wieght, and not by length of tape then calibrating the setting knob for the micro-switch in terms of weight rather than in terms of length of spool or diameter of spool is advantageous.
  • a control knob 62 is provided on the side of the console 12.
  • the control knob 62 controls the tension in the spring urging the dancer wheel 39 along its track 4l.
  • the dancer wheel 39 will move to the clockwise end of its track 41 (as viewed in Figure 2) and when in this position, the dancer wheel assembly within the console operates a micro-switch in series with the micro-switch operated by the finger 59.
  • the dancer wheel 39 will be moved, by its tension spring, to a position wherein its operates the micro-switch thus de-energising all of the motors of the machine.
  • the portion of the base 11 upon which the carriage 13 is movable is hollow, and contains the guide rods l6, the lead-screw 17, and the lugs 15 and 18.
  • the hollow region is in the form of an oil bath so that the bearings of the carriage 13 on the guide rods l6, and the captive nut 18 engaged with the lead-screw 17 are either partially, or totally oil immersed.
  • both carriage traverse drive motors operate at the same speed to give the same tape lay for each layer of turns wound on the spool.
  • a deli erate imbalance in the speeds can be provided in order to give different lays for adjacent layers of turns. For example, if the motor driving pulley 56 runs faster than motor driving pulley 57 then each layer of turns would during traverse to the right will have wider lay than those wound during traverse to the left and a spool will be filled with turns of tape the layers of which are alternately wider and narrower layer.
  • Such a method of winding is believed to be both novel and useful particularly where damaged tape is to be wound onto spools having capacity of a large number of layers of turns.
  • the effect can be achieved by controlling the speed of the motor 71 in relation to the clutch energised at any given time.
  • the motor can have a resistor automatically connected in series with it whenever the clutch 82 is energised. In this manner the motor speed will be reduced when it is driving the lead-screw 17 through the clutch 82 but will return to its preset value when driving the lead-screw through the clutch 87.

Landscapes

  • Tension Adjustment In Filamentary Materials (AREA)
EP80302205A 1979-07-12 1980-07-01 Machine à bobiner et procédé de bobinage Withdrawn EP0023391A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB7924343 1979-07-12
GB7924343 1979-07-12
GB7934245 1979-10-03
GB7934245 1979-10-03

Publications (1)

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EP0023391A1 true EP0023391A1 (fr) 1981-02-04

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EP80302205A Withdrawn EP0023391A1 (fr) 1979-07-12 1980-07-01 Machine à bobiner et procédé de bobinage

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EP (1) EP0023391A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997004471A1 (fr) * 1995-07-18 1997-02-06 C.D. Wälzholz Produktions-Gesellschaft Mbh Procede permettant d'enrouler une bande electrique pour former une bobine de grande dimension
FR2884238A1 (fr) * 2005-04-12 2006-10-13 Calemard Soc Par Actions Simpl Procede d'enroulement d'un materiau en bande sur une bobine et le dispositif de mise en oeuvre
CN112621718A (zh) * 2020-12-10 2021-04-09 台州学院 一种二自由度并联驱动机械手

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH272935A (de) * 1948-05-22 1951-01-15 Siemens Ag Albis Spulenwickelmaschine.
DE807296C (de) * 1948-10-02 1951-06-28 Siemens Schuckertwerke A G Aufwickelvorrichtung fuer feinste Draehte oder Faeden
AT268948B (de) * 1965-07-09 1969-02-25 Schweiter Ag Maschf Präzisionskreuzspulapparat
DE1474231A1 (de) * 1964-01-16 1969-05-22 Luetcke Werner Walter Automatische Spulmaschine
US3489020A (en) * 1966-09-29 1970-01-13 Meteor Ag Drive mechanism for a to-and-fro movable carriage
US3680801A (en) * 1970-07-31 1972-08-01 Regal Mfg Co Yarn traverse mechansm
AT301402B (de) * 1968-04-25 1972-09-11 Schweiter Ag Maschf Einrichtung zum Aufwinden von Endlos-Garn auf eine Spule
US3854668A (en) * 1973-05-29 1974-12-17 Du Pont Winder linkage
US4049211A (en) * 1975-11-05 1977-09-20 Rieter Machine Works, Ltd. Winding apparatus for textile threads
DE2632014A1 (de) * 1976-07-16 1978-01-19 Schlafhorst & Co W Wickelvorrichtung
DE2109214B2 (de) * 1971-02-26 1978-04-13 F.M.N. Schuster & Co, 5030 Huerth Fadenführungsvorrichtung zum Wickeln von Fäden zu Kreuzspulen
US4136570A (en) * 1976-03-31 1979-01-30 Meteor Ag Transmission gear for a wire guide of a winding machine

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH272935A (de) * 1948-05-22 1951-01-15 Siemens Ag Albis Spulenwickelmaschine.
DE807296C (de) * 1948-10-02 1951-06-28 Siemens Schuckertwerke A G Aufwickelvorrichtung fuer feinste Draehte oder Faeden
DE1474231A1 (de) * 1964-01-16 1969-05-22 Luetcke Werner Walter Automatische Spulmaschine
AT268948B (de) * 1965-07-09 1969-02-25 Schweiter Ag Maschf Präzisionskreuzspulapparat
US3489020A (en) * 1966-09-29 1970-01-13 Meteor Ag Drive mechanism for a to-and-fro movable carriage
AT301402B (de) * 1968-04-25 1972-09-11 Schweiter Ag Maschf Einrichtung zum Aufwinden von Endlos-Garn auf eine Spule
US3680801A (en) * 1970-07-31 1972-08-01 Regal Mfg Co Yarn traverse mechansm
DE2109214B2 (de) * 1971-02-26 1978-04-13 F.M.N. Schuster & Co, 5030 Huerth Fadenführungsvorrichtung zum Wickeln von Fäden zu Kreuzspulen
US3854668A (en) * 1973-05-29 1974-12-17 Du Pont Winder linkage
US4049211A (en) * 1975-11-05 1977-09-20 Rieter Machine Works, Ltd. Winding apparatus for textile threads
US4136570A (en) * 1976-03-31 1979-01-30 Meteor Ag Transmission gear for a wire guide of a winding machine
DE2632014A1 (de) * 1976-07-16 1978-01-19 Schlafhorst & Co W Wickelvorrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997004471A1 (fr) * 1995-07-18 1997-02-06 C.D. Wälzholz Produktions-Gesellschaft Mbh Procede permettant d'enrouler une bande electrique pour former une bobine de grande dimension
FR2884238A1 (fr) * 2005-04-12 2006-10-13 Calemard Soc Par Actions Simpl Procede d'enroulement d'un materiau en bande sur une bobine et le dispositif de mise en oeuvre
CN112621718A (zh) * 2020-12-10 2021-04-09 台州学院 一种二自由度并联驱动机械手

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