| 摘要 |
841,111. Angular bending. ETABLISSEMENTS B. FAURE. April 23, 1957 [April 24, 1956], No. 12963/57. Class 83 (4). [Also in Groups XV and XXVIII] A pneumatic tool for securing wires together by wrapping a U-shaped clip 3, Fig. 5, round them, has a rod 1 with a hooked end 4, and a movable mass 2 slidable inside the tool which pushes the clips towards the hooked end and deforms them round the wires. The rod 1 has an elongated outer surface from the hooked end and the clips are inserted at a great distance from the hooked end, e.g. ten times the maximum dimension of the clips. Initially a spring 20, Fig. 1, is not compressed and a push-piece 17, 18, carried by the end of a finger 16, projects into hollow rod 1 where it has introduced a clip 3. Compressed air enters the tool through a valve 28, Fig. 2, which is opened when a rod 27, urged by a control-member 31, closes an exhaust orifice 30. Air entering tube 14, Fig. 1, through a hole 23, lifts a piston 15 upwards, compressing the spring 20 and pulling the pushpiece 17, 18 away from a passage 1b of the rod 1. When a piston 15 rises above an outlet hole 24 compressed air is admitted via a tube 26 into the rod 1 where it propels the mass 2 towards the hooked end of the rod 1. An end 2b pushes forward a clip 3, held in position by a permanent magnet 11, and bends it round the wires. A new clip 3 is now spring-urged from a magazine 13 into the path of travel of the push-piece 17, 18. As soon as the control member 31 is released, compressed air escapes through an orifice 30, then, when the piston 15 has moved down below the hole 24, through a hole 32 at the top of the cylinder 14. A spring 7 returns the mass 2 to rest position and the spring 20 returns the push-piece 17, 18, carrying a new clip 3, to its initial position. Thus, movement of the mass 2 is only possible when the push-piece 17, 18 has been moved out of the path of the mass 2. The end 17 of the push-piece is wedge-shaped so that the end one of a chain of clips may be readily detached by it. Specifications 710,616 and 841,061 are referred to. |
