B - Operations – Transporting – 21 – F
Patent
B - Operations, Transporting
21
F
B21F 35/02 (2006.01) F16F 1/02 (2006.01)
Patent
CA 2658569
A coil spring end forming apparatus is provided that includes a pair of horizontally disposed parallel rollers 8; a mandrel 22; a stopper 20 that is provided adjacent to the circumferential surface of the mandrel 22 and is moved up or down and rotated integrally with the mandrel 22; a clamp jig 24 that is provided so as to be movable toward or away from the mandrel 22 and that holds a semi-formed spring 30 in cooperation with the mandrel 22, and a pusher 12 for pushing the semi-formed spring 30 toward the stopper 20, wherein in a state in which the axis of the mandrel 22 is positioned between the axes of the parallel rollers 8 and the semi-formed spring 30, a clamp portion 2 holds the semi-formed spring 30 at the inner side of a triangle formed by the axes of the parallel rollers 8 and the semi-formed spring 30 and rotates around the axis along the winding direction of the semi-formed spring 30 to form a pigtail portion at one end of the semi-formed spring 30, and a coil spring end forming method is further provided.
L'invention concerne un dispositif et un procédé pour réaliser une extrémité d'un ressort à boudin. Le dispositif comprend un paire de rouleaux (8) parallèles disposés horizontalement, un noyau (22), une butée (20) installée adjacente à la surface périphérique du noyau (22), mobile verticalement et rotative ensemble avec le noyau (22), un gabarit de serrage (24) installé afin d'être approchable et séparable du noyau (22) et maintenant un ressort (30) semi-fini en coopération avec le noyau (22), et un pousseur (12) pour pousser le ressort (30) semi-fini vers la butée (20). Dans le procédé, une grande partie de queue est formée à une extrémité du ressort (30) semi-fini lorsque l'axe du noyau (22) est positionné entre l'axe du ressort (30) semi-fini et les axes des rouleaux (8) parallèles. Pour réaliser la grande partie de queue, une pièce de serrage (2) tourne le ressort (30) semi-fini dans sa direction d'enroulement autour de l'axe tout en maintenant le ressort (30) à l'intérieur d'un triangle formé par les axes des rouleaux (8) parallèles et l'axe du noyau (22).
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Mitsubishi Steel Mfg. Co. Ltd.
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