| 摘要 |
<p>A method and an apparatus (30) are provided for producing sequences of coil springs of more than one configuration, such as those differing in stiffness, shape, size or other property. At least two coiling stations (31, 32) are provided around different positions of a rotary index mechanism (40) that has a plurality of angularly spaced spring holders (43) that are sequentially moved through and rest simultaneously at a plurality of forming (31, 34) or other treating stations (33, 34) around a central axis. The coiling stations alternatively deliver coiled springs (20) to each holder (43), while one or more post forming stations, preferably including two knotting stations (33, 34) and one heat treating station (35), sequentially operate on each of the springs of the different configurations. A transfer station (36) transfers finished springs to a conveyor (37) that transfers programmed sequences of springs, row by row, to a spring interior assembler (38). The stations are controlled to simultaneously perform different operations on different springs, including different types of springs. Springs of different rows are formed or post formed or treated simultaneously at different ones of the stations.</p> |
