Patent GB-847034-A (GB)
Title: Coil transfer mechanism
IPC: B21C47/24
Filed: 1958-06-05
Abstract: 847,034. Winding and reeling. MESTA MACHINE CO. June 5, 1958 [June 12, 1957], No. 17984/58. Class 83 (4). [Also in Group XXX] Apparatus for transferring coils of metal strip from one or more coiling-machines to an endless conveyer comprises a transfer arm mounted for vertical swinging and on which is slidably mounted an arbor engageable within the opening in a coil, and mechanism adapted to cause the arbor to slide outwards from one side of the arm and transversely to the plane of the coil to engage the coil when the arm is vertical, to thereafter swing the arm to horizontal position such that the arbor is turned through a rightangle, and to withdraw the arbor from the opening in the coil when the arm is in the latter position, so that the coil is deposited either directly or through further transfer means upon the conveyer. In one embodiment, Figs. 1 and 3, coils are transferred alternately from each of two coiling-machines 10, 11 to endless conveyer chains 34 by two transfer arms 17 mounted on horizontal shafts 18 journalled in a carriage 15 reciprocable on rails 14, 15 between two positions, the arrangement being such that in one position of the carriage one arm receives a coil from the machine 11 while the other deposits a coil previously received from machine 10 to the chains 34, and vice versa in the other position of the carriage. The carriage 15 is in two parts pivotally connected at 15a, and is reciprocated by a drive-rod 24 embodying a rack engaged with a pinion arrangement 26 driven by a reversible motor 27. The shafts 18 are also connected together. One shaft has a splined portion 19 connecting it to a crank 20 which is reciprocated by a link 20a actuated by a crank 20b rotated through gearing 22 by a motor 21. The other shaft 18 may be extended to couple it to another pair of transfer arms associated with further coiling-machines. Each transfer arm 17 has an arbor 29 slidable in it and normally locked in projected position by a latch lever 30, Fig. 3. When the carriage is moved to one position one of the transfer arms 17 is in vertical position opposite machine 10 so that a pusher 41 can be operated to slide a coil 40 on to the arbor 29. As the carriage is moved to its other position this arm 17 is lowered to the chain-line position, Fig. 3, in which the latch lever 30 is lifted by a stop 39 so that the arbor can slide downwardly under control of a piston 37 engaging a roller 38 on the arbor, the piston being lowered slowly by displacement of fluid from a cylinder 36 to deposit the coil on the chains 34. As the coil 40 is deposited a coil is being received by the other arm 17 from the machine 11 for subsequent transfer to the chains 34 when the carriage moves to its other position. In a second embodiment, Fig. 5, each coiling- machine has a transfer arm 56 similar to arms 17 of the previous embodiment and mounted for individual oscillation on a horizontal shaft driven by a separate motor assembly. In the vertical position of the arm 56 its arbor 60 is in alignment with the mandrel 54 of the associated machine and receives a coil from it. When the arm 56 is lowered the arbor is unlocked and lowered as in the previous embodiment but the coil is received by arms 58 on a reciprocating carriage. The carriage is then moved to bring the arms 58 into a position above a pair of conveyer chains 59, from which position it is lifted by the piston of a piston-and-. cylinder lifting-device 63 for subsequent deposition on the chains 59 when the carriage has returned to its original position to receive another coil.