US3093956A - Cable making machines - Google Patents

Cable making machines Download PDF

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Publication number
US3093956A
US3093956A US153583A US15358361A US3093956A US 3093956 A US3093956 A US 3093956A US 153583 A US153583 A US 153583A US 15358361 A US15358361 A US 15358361A US 3093956 A US3093956 A US 3093956A
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United States
Prior art keywords
cable
bobbin
pulley
cage
drum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US153583A
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English (en)
Inventor
Williams Ernest Joseph
Anthony George Henry
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.)
TRAFALGAR ENGINEERING Co
TRAFALGAR ENGINEERING Co Ltd
Original Assignee
TRAFALGAR ENGINEERING Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by TRAFALGAR ENGINEERING Co filed Critical TRAFALGAR ENGINEERING Co
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/02—Stranding-up
    • H01B13/0221—Stranding-up by a twisting take-up device
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/08—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the take-up reel rotates about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position and the supply reels are fixed in position
    • D07B3/10—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the take-up reel rotates about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the rope or cable on the take-up reel in fixed position and the supply reels are fixed in position with provision for imparting more than one complete twist to the ropes or cables for each revolution of the take-up reel or of the guide member

Definitions

  • the invention relates to a cable making machine of the type in which a number of strands are twisted together to form a cable.
  • Such machines normally include a cage having a number of hollow-spider arms which are arranged to be rotated about a central cradle carrying a bobbin onto which the cable is wound.
  • the strands are led through one hollow arm of the cage and, when the cage is rotating, are g1ven one twist at their point of entry into the spider arm and another at their point of exit.
  • the twisted strands or cable then passes over a haul-of1' pulley through a traversing device mounted on the cradle to the bobbin on which it is wound.
  • the traversing device ensures that the cable is laid on the bobbin in a uniform fashion along the whole length of the bobbin drum.
  • the traversing device cornprises two upstanding rollers positioned close to each other between the haul-oil pulley and the bobbin.
  • the rollers are reciprocated together parallel to the axis of the [bobbin so that the cable which is led between the rollers is laid along the whole length of the bobbin.
  • the cable is flexed both at its point of leaving the haul-off pulley and its point of entry between the rollers of the traversing device. This bending or flexing of the cable tends to damage the cover or insulation of the strands and it may cause work hardening of the wires with a consequent increase in their resistance to the passage of electric current.
  • the degree of bending can be lessened by increasing the distance between the haul-off pulley and the traverser but the increase necessary to reduce the flexing of the cable to such a degree that it would not be damaged would lead to machines of uneconomic length and the speed of rotation of the cage, which would also be increased in length, would necessarily be lowered.
  • machines In practice machines have to be designed to compromise between the degree of bending of the cable and an economic length of the machine.
  • the cable is traversed along the bobbin drum by a relative rocking movement between a pulley incorporated in a traversing device or in a capstan unit and the bobbin, the movement being such that the cable is led straight off the pulley groove and onto the bobbin drum without flexing throughout the whole traverse of the drum.
  • the pulley forms part of the traversing device and is rocked in a plane substantially parallel to the bobbin drum, while the bobbin is not rocked.
  • the rocking movement of the pulley is normally in an are centered on a point which lies on the line connecting the point at which the cable enters the traversing device and the centre of the bobbin so that the cable is led directly onto the pulley groove without bending throughout the traversing movement.
  • the bobbin can be rocked about a central axis perpendicular to the drum face while the pulley remains stationary or both the bobbin and the pulley may be rocked so that at any moment one is moving in an opposite direction relatively to the other so that the cable is traversed along the drum.
  • the pulley on the traversing device can be located very near to the bobbin in fact as near as desired provided that no fouling occurs during the rocking movement.
  • the machine can therefore be shortened considerably as compared with normal machines and will occupy less floor space in a factory.
  • the shortening of the machine results in a shortening of the length of the rotating cage so that a higher speed of the rotation of this cage becomes practicable with a consequent increase in the output of the machine.
  • the cage may be rotated at speeds in excess of 1500 r.p.m., as compared with only about 1000 rpm. in a conventional machine.
  • the pulley forming part of the traversing device is preferably the 'haul-oflt pulley which draws the cable through the machine but it may be a guide pulley.
  • the pulley is conveniently rotatably mounted on a rocker plate together with a measuring pulley also mounted on the plate and around which the cable passes so that the length of cable passing through the machine can be recorded.
  • two pulleys are mounted on the traversing device they will preferably be located, one above, and one below the point about which the device is rocked with their circumferencesvery close to this point.
  • FIGURE, 1 is a diagram illustrating the principles of the invention
  • FIGURE 2 is an elevation of one embodiment of a 7 machine in accordance with the invention.
  • FIGURE 3 is a plan view of the machine shown in FIGURE 2,
  • FIGURE 4 is a section on the line IVIV of FIG- URE 3,
  • FIGURE 5 is a sectional plan view of the cradle of the machine to a larger scale
  • FIGURE 6 is a part sectional view on the line VIVI of FIGURE 3, and
  • FIGURE 7 is a detailed view of the traversing screw and block.
  • the traversing device illustrated in its essentials in FIGURE 1 comprises a rocker plate 2, which is mounted on a cradle (not shown in FIGURE 1), for rocking movement on an are centered on a line XX which connects the centre of a hole 4 in the plate 2 through which the twisted strands (or cable) pass to the traversing device, and the central point of a bobbin generally indicated at 6, onto which the twisted strands are to be wound.
  • the rocking movement takes place in a plane parallel to the bobbin axis Y--Y.
  • a haul-oil pulley- 8 and a measuring pulley 10 are mounted for rotation about axes perpendicular to the line XX.
  • the cable passes around the pulley 8 and around the measuring pulley 10 onto the drum of the bobbin 6, the pulleys 8 and 10 being in line one on each side of the line X X.
  • the circumference of both the pulleys 8 and 10 lies very close to the line X--X so that the cable can be laid directly into the grooves of the pulley.
  • the rocking plate 2 has a tongue 11 having a slot 12, in which a roller 14 is mounted.
  • the roller 14 is carried by a traversing block (not shown in FIGURE 1) which engages in the thread of a traverse screw 16. As the screw 16 is rotated the block reciprocates from one end of the screw to the other, the plate 2 being caused to rock or oscillate about the line XX to lay the cable smoothly over the whole length of the drum of the bobbin 6,
  • the machine comprises a base frame generally indicated at 20 onto which a motor 22 is fastened.
  • the motor shaft 24 passes through a fluid-coupling device 26 to drive a pulley 28 (see FIG- URE 4).
  • the pulley 28 is connected to an upper pulley 30 by a belt 32, the upper pulley 30 being fastened to an upper lay shaft 34, extending along the length of the machine and mounted in bearing 36.
  • the lay shaft 34 carries drive pulleys 38 at each end from which a drive is transmitted by belts 40 to driven pulleys 42 at each end of the machine, the belts, which are not shown in FIG- URE 2 for the sake of clarity, are toothed, giving a power grip s'o that no slipping can occur.
  • Each of the pulleys 42 are connected to a short drive shaft for the rotating cage 43 of the machine, the drive shaft being carried in bearings 44.
  • An electro-magnetic brake generally indicated at 46 is provided for each of the drive shafts between the bearings 44 at each end.
  • Each drive shaft is connected to one of the discs 48 of the cage through connecting struts 50, the .two .discs being connected together near their periphery by three spider tubes 51 (only one of which is shown in FIGURE 2).
  • An approximately Uashaped cradle generally indicated at 52 is freely mounted between the cage discs within the tubes 51, independently of the cage so that when the cage is rotating at high speed the cradle remains relatively stationary, but is free to rock slightly if necessary.
  • a bobbin 54 onto which the cable'is to be wound extends across the arms of the cradle and is carried by them.
  • Strands of the cable are fed into the machine through a lay plate 56 at one end of the machine, under a lower guide pulley 58 carried by one of the cage discs 48 and over a corresponding guidepulley 60, the strands of cable being shown at 62 in FIGURE 2.
  • the strands pass through a tube 64 indicated by .dash lines in FIGURE 2 and mounted within one of the tubes 51 connecting the two discs.
  • the strands After emerging from the other end of tube 64 the strands pass over guide pulleys 66, 68 carried by the other disc 48 and through a central hole in the disc 48 along the axis of the cage through a corresponding hole 70 in the base of the U-shaped cradle through a traversing device comprising a rocker plate 72 mounted on the cradle, a driven haul-ofi pulley 74 and a measuring pulley 7 6, both pulleys being carried by the plate 72.
  • a traversing device comprising a rocker plate 72 mounted on the cradle, a driven haul-ofi pulley 74 and a measuring pulley 7 6, both pulleys being carried by the plate 72.
  • the cradle generally indicated :at 2 is carried at its base by a member 80 providing the inlet hole 70, and secured to the cage of the machine, through bearings 82. Thus the cradle can remain stationary despite the rotation of the member 80.
  • the drive for the take-up bobbin 54 is taken from the cage 43 and the gear train and is illustrated in FIGURE 5.
  • the driven gear 88 drives shaft 92 through an electro-magnetic slipping clutch 91 which in turn drives one of two meshing bevel gears 94, the driven one of which is connected to a chain sprocket 96 driving a'corresponding sprocket 98 mounted on a shaft 100.
  • the other end of the shaft has a drive gear 102 mounted on it which drives a corresponding gear 104 on the bobbin shaft 106.
  • Each end of the bobbin shaft is mounted in bearings provided by two freely rotatable rollers 108 for quick removal.
  • the block has a shaft 128 projecting from one side to carry a roller 130 which engages in a slot 132 in the tail portion 134 of the rocker plate (see FIGURE 4).
  • the block is free to slide along a slide 135 on the cradle as it is moved along the screw thread by the inter-engagement of its tongue 124 in the thread as the screw is rotated, the thread being doubled so that the block is reciprocated from end to end.
  • the plate 76 is oscillated or rocked in an arc about its axis which coincides with the hole in the member 80.
  • the rocker plate carries the pulleys 72, 74' these also are rocked so as to traverse the cable fed from the pulley 74 along the length of the drum of the bobbin 54 and lay the cable correctly onto that drum.
  • the thread cut into the traverse screw is such that its pitch varies so as to cause a faster movement of the block 126 at each end of the screw thread than at the centre point. This ensures that the cable is laid onto the bobbin evenly.
  • the pitch of the screw could be maintained constant, but its speed of rotation varied.
  • the screw thread is also arranged to have a slight dwell at each end so that the cable is laid correctly against the flanges of the bobbin.
  • the variation of the screw thread depends on the size of the bobbin. For example with a take-up bobbin having 16 diameter x 9%" traverse, the pitch of the traverse screw will vary (from A" at one end to Vs at the centre, to 0.9" at the other end. The pitch is not equal at the ends because part of the take-0E from the pulley 76 is off centre.
  • the drive for the traverse screw is directly connected to the drive for the bobbin so that the rotation of the bobbin and the oscillation of the pulleys of the traversing device are always maintainedin correct time with each other.
  • the driven bevel gear 94 drives in addition to the chain sprocket 96, a change gear wheel 136 meshing with a second change gear wheel 138 mounted on a shaft carrying a chain sprocket 140.
  • the sprocket 140 is connected by a chain 142 to a corresponding sprocket 144 on one end of the traverse screw 121.
  • the speed of rotation of the screw can be varied by changing the size of the change wheels 136, 138 which are covered by a removable cover 139.
  • the twisted strands or cable are laid directly into one of the grooves in the circumference of the pulley 74 from the hole in the member 80, without flexure whatever the angular position of the pulley 74 may be. This is because the pulleys are rocked about an are centered on the axis of the hole 7 over the second groove in the measuring pulley to the
  • the traversing device rocker plate 76 is mounted, inv bobbin drum.
  • the drive to the haul-off pulley is as follows.
  • the member 86 which is rotating with the cage carries a second drive gear 146 around its circumference (see FIGURE 5).
  • This gear drives a driven gear 148 (see FIGURE 6) fixed to a shaft 150 carrying a worm 152 which drives a worm wheel 154.
  • the worm wheel is mounted for rotation in the gearbox 120 and carries a driven change wheel 156 meshing with a second change wheel 158 keyed on the shaft of the haul-01f pulley 74.
  • the size of the gears 156, 158 can be varied to vary the speed of rotation of the haul-off pulley.
  • the measuring pulley 76 has a shaft 160 which is mounted freely in bearings 162 in the gearbox so that the pulley is rotated as the cable passes over it. This measuring pulley is connected up to a counting device (not shown) so that the length of cable passing through the machine can be recorded.
  • the pulleys '74, 76 will be seen to be as close to the flange of the take-up bobbin as is possible without fouling so that the machine has as short a length as possible. This enables the rotating cage, also to have as short a length as possible so that its speed of rotation and hence the output of the machine is high.
  • the length of traverse may be adjusted for diiferent Widths of bobbins.
  • the length of traverse may be varied by providing haul-off pulleys having different diameters. It will be appreciated that in the latter case and if the diameter is reduced, the circumference of the groove may not be on the centre line of the cradle and a guide wheel has to be provided to ensure that the cable does not rub on the edge of the hole 70-.
  • rocking movement of the rocker plate can be achieved by any other suitable device, such as a heart-shaped cam.
  • the bobbin may be rocked, the lead-off pulley either remaining stationary, in which case it no longer forms part of a traversing device but is incorporated rather in a stationary capstan unit, or alternatively both the pulley and the bobbin are rocked in opposite directions to achieve a relative rocking movement to traverse the cable.
  • a cable making machine comprising a bobbin cradle, a cage arranged to be rotated and to carry the strands of the cable 'around the bobbin cradle, a travers ing device for laying cable onto the drum of a bobbin "mounted in the bobbin cradle after the cable has passed through the said cage, a pulley forming part of the said traversing device, drive means to rock said pulley in a plane substantially parallel to the bobbin drum, and second drive means linked to the pulley drive, said second drive means being arranged to drive the bobbin to take up cable as the said pulley is being rocked to traverse cable across the drum of the bobbin.
  • a cable making machine as claimed in claim 1 in which the pulley is rocked along an arc centred on a point which lies on a line connecting the point at which the cable enters the traversing device to the centre of the bobbin.
  • a cable making machine as claimed in claim 1 in which the pulley forming part of the traversing device is driven to pull the cable through the cage from a supply bobbin.
  • a cable making machine comprising a bobbin cradle, a cage arranged to be rotated and to carry the strands of the cable around the bobbin cradle, a traversing device for laying cable onto the drum of a bobbin mounted in the bobbin cradle after the cable has passed through the said cage, a pulley forming part of the said traversing device, drive means to rock said pulley in a plane substantially parallel to the bobbin drum, second drive means linked to the pulley drive, said second drive means being arranged to drive the bobbin to take up cable as the said pulley is being rocked to traverse cable across the drum of the bobbin, and said pulley having its circumference arranged substantially tangential to a line connecting the centre of the bobbin drum to the point on which the cable enters the traversing device.
  • a cable making machine as claimed in claim 4 in which the pulley is an idler pulley arranged to measure the length of cable passing through the machine.
  • a cable making machine comprising a bobbin cradle, a cage arranged to be rotated and to carry the strands of the cable around the bobbin cradle, a traversing device for laying cable onto the drum of a bobbin mounted in the bobbin cradle after the cable has passed through the said cage, a pulley forming part of the said traversing device, drive means to rock said pulley in a plane substantially parallel to the bobbin drum, second drive means linked to the pulley drive, said second drive means being arranged to drive the bobbin to take up cable as the said pulley is being rocked to traverse cable across the drum of the bobbin, said traversing device including a rocker plate on which the said pulley is mounted, and a traverse screw adapted to rock the rocker plate, said tnaverse screw having a thread which is engaged by a traverse block connected to the rocker plate.
  • a cable making machine in which the thread of the traverse screw is such that its pitch varies along its length in such a way that the rocker plate is moved faster at each end of the screw than at the centre of the screw.
  • a cable making machine comprising a bobbin cradle, a cage arranged to be rotated and to carry the strands of the cable around the bobbin cradle, a traversing device for laying cable onto the drum of a bobbin mounted in the bobbin cradle after the cable has passed through the said cage, a pulley forming part of the said traversing device, drive means to rock said pulley in a plane substantially parallel to the bobbin drum, second drive means linked to the pulley drive, said second drive means being arranged to drive the bobbin to take up cable as the said pulley is being rocked to traverse cable across the drum of the bobbin, said pulley being carried by a rocker plate having an aperture through which the cable passes to the pulley after leaving the said cage, and the circumference of the said pulley lying substantially tangential to the line connecting said aperture with the centre of the bobbin drum.
  • a cable making machine as claimed in claim 8 in which the rocker plate is driven by a traverse screw, the drive means for the screw being linked with the drive means for the bobbin.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Ropes Or Cables (AREA)
  • Wire Processing (AREA)
US153583A 1960-11-22 1961-11-20 Cable making machines Expired - Lifetime US3093956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB40190/60A GB1011539A (en) 1960-11-22 1960-11-22 Improvements in and relating to cable making machines

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US3093956A true US3093956A (en) 1963-06-18

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US153583A Expired - Lifetime US3093956A (en) 1960-11-22 1961-11-20 Cable making machines

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US (1) US3093956A (da)
DE (1) DE1440239A1 (da)
DK (1) DK103447C (da)
GB (1) GB1011539A (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147581A (en) * 1962-05-10 1964-09-08 Godderidge Jean Twisting frame assembly

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110444348B (zh) * 2019-09-05 2024-07-19 合肥合宁电工设备有限公司 一种液压式底部自动上下盘装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2380801A (en) * 1943-11-24 1945-07-31 Willard L Stover Winch cable guide
FR1016031A (fr) * 1950-04-06 1952-10-30 Automobiles Ind Latil Procédé et dispositif d'enroulement correct pour câbles ou fils
US2773344A (en) * 1951-04-12 1956-12-11 Charles F Van Hook Vertical twisting machine
US2855163A (en) * 1955-06-23 1958-10-07 Sam R Powers Level wind attachment for winch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2380801A (en) * 1943-11-24 1945-07-31 Willard L Stover Winch cable guide
FR1016031A (fr) * 1950-04-06 1952-10-30 Automobiles Ind Latil Procédé et dispositif d'enroulement correct pour câbles ou fils
US2773344A (en) * 1951-04-12 1956-12-11 Charles F Van Hook Vertical twisting machine
US2855163A (en) * 1955-06-23 1958-10-07 Sam R Powers Level wind attachment for winch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147581A (en) * 1962-05-10 1964-09-08 Godderidge Jean Twisting frame assembly

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Publication number Publication date
DK103447C (da) 1966-01-03
DE1440239A1 (de) 1968-12-12
GB1011539A (en) 1965-12-01

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