Patent GB-985738-A (GB)
Title: Improvements in or relating to forming wire into coils and bundles
IPC: B21C47/14
Filed: 1963-10-30
Abstract: 985,738. Winding and reeling. FORGES DE LA PROVIDENCE S.A. Oct. 30, 1963 [Nov. 26. 1962; Jan. 15, 1963], No. 42930/63. Heading B3E. A method of reeling coiled wire bundles in which the coils are each on a plane at 90 - degrees to the bundle axis and the coils are of continually changing radius alternately increasing and decreasing between maximum and minimum radii comprises passing the wire to the bundle over a number of rollers in a bending device and continually varying the spacing between the rollers to vary the curvature in the wire coils as they are laid on the bundle. Apparatus comprises a base 51 supporting a bridge 52 housing a rotatable spindle 55 to which is attached an upper flanged reeling plate 3 and a support plate 12, rotatably mounted on the spindle 55, having a reeling arm 5 which carries guide rollers 4. Wire 58 is fed to the winder over a roller 1, through the spindle 55, about rollers 4 to a directing device 6, attached to the arm 5, to the plate 3 about which it is wound several times. Subsequently it passes through a bending device 14, on the plate 12, to a guide plate 62 also fixed to the plate 12 rotating between the rods 64, 65 of a reel 15. Motors 8, 10 of which at least the latter is speed adjustable or coupled with an adjustable transmission gear drive the plates 3, 12. A differential gear assembly rotatably mounted on the shaft 55 comprises a pinion 7 chain driven via motor 8, differential pinion 11 rotatable about supports 67 rigidly coupled to the shaft 55 and a pinion 9, chain driven by the motor 10 via a shaft 13 which also drives the plate 12 via a chain and sprocket 78, 79 at half the speed of the pinion 9. The shaft 55 is only rotated if the angular velocities of the pinions 7, 9 are different. The motor 8 runs at a constant speed proportional to the infeed velocity of the wire. A speed regulating device 20 fitted to the motor 10 which may be a three-phase commutator type, comprises a spindle 80 for displacing the motor brush assembly, driven via chain and sprocket gearing by a motor 84. The motor 84 and a motor (not shown) which drives a cam 19 of the bending device are connected to commutator rings 18 such that the motor speeds are adjusted synchronously. A rotatable roller 16 mounted on the plate 12 is driven by the flange 17 at the relative velocity of the plates 3, 12 and its lower portion supports the wire running off the plate 3 to the bending device 14. The device 14 comprises freely rotatable rollers 23 and a wire bending roller 21 rotatably mounted on a pin 25 in a forked lever 22, pivotable about a pin 22a, the pin 25 being held against the cam 19 by a spring (not shown). The cam controls the radius of curvature of the running off wire. A stop 24 on the cam serves to simultaneously turn on and off the drive of the device 20 and the cam 19. In a modification the motor 8 is coupled to a gear-wheel 42 of the pinion 7 and the motor 10 drives the pinion 9 via a shaft 13 which is also coupled to a gear 91 to drive the plate 12. The reeling plate has a lower flange rim 17. The motor 10 is speed adjusted by an epicyclic gear train comprising gears 36, 37 rotatably mounted in the gear 42 meshing with fixed and rotatable gears 34, 35 which drive a gear 38 to rotate, via bevel gears and a shaft 93 the cam plate 41 which actuates the motor control spindle. The spindle 93 rotating through one revolution for every 400 revolutions of the gear 42. A similar epicyclic gear arrangement is used to relate the speed of the cam plate 19, which is driven via a chain 95 and sprockets 32, 33, through gears 28-31 with that of the plate 12. The transmission ratio giving 1 revolution of the gear 28 to 200 revolutions of the plate 12. Since the difference between the angular velocities of the plates 3 and 12 is constant and the angular velocity of the plate 12 has a ratio of 2: 1 the angular velocities of the plate 19 and cam 41 are identical.