| 摘要 |
A device for cutting a helically wound wire (40) and forming a loop at the cut end, comprises a guiding-positioning member (96) for restraining relative movement of the helical for cutting and forming a loop on the end of the helical, and shearing-clenching member (88) movable relative to the guiding-positioning member between a rest position and cutting and clenching positions. When moved from the rest position (Fig. 7a) to the cutting position (Fig. 7b), a first shearing surface 140 on the shearing-clenching member and a mating second shearing surface 129 on a cutting channel 128 of the guiding-positioning member cooperate to shear the helical. As the shearing-clenching member continues in a single motion between the cutting and clenching positions, an abutment surface 138 on the shearing-clenching member engages one of the sheared ends of the helical and cooperates with an edge 170 on a retaining channel 126 of the member 96 to form a residual loop (Figs. 7c, 7d). The device and method are particularly suited for the automated cutting and finishing of helicals in the manufacture of bedspring assemblies. <IMAGE> |
