Automatic punching riveting device and die used for the device

B - Operations – Transporting – 21 – J

Patent

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Details

B21J 15/04 (2006.01) B21J 15/02 (2006.01) B21J 15/10 (2006.01) B21J 15/36 (2006.01)

Patent

CA 2471676

An automatic punching riveting device, comprising a die (18) having a center pin (25) receiving a hollow portion in the leg part (5) of an automatic punching rivet (1) and a die body (27) having a recessed part (26) for guiding the deformation of the leg part tip of the automatic punching rivet in radial outer direction formed on the outer peripheral side of the center pin (25), wherein the center pin (25) and the die body (27) are movably supported, relative to each other, along the axial direction of the center pin (25) facing a punch (14), and a disc spring (41) moves the center pin (25) relative to the die body (27) so that, when the automatic punching rivet (1) pressed by the punch (14) is driven into tightened members (2) and (3) and the leg part tip thereof starts to pierce the tightened member (3) on a receiving side, the center pin (25) can be brought into contact with the die side surface of the tightened member (3) on the receiving side, whereby the restriction of the driving direction of the tightened members can be relieved or eliminated.

L'invention concerne un dispositif de rivetage par poinçonnage automatique, qui comprend: une matrice (18) à tige centrale (25) recevant une partie creuse dans le montant (5) d'un rivet de poinçonnage automatique (1); et un corps de matrice (27) à cavité (26), pour le guidage de la déformation de l'extrémité du montant dudit rivet, dans la direction radiale externe, sur la périphérie externe de la tige centrale (25). En l'occurrence, la tige centrale (25) et le corps de matrice (27) sont supportés mobiles, l'une par rapport à l'autre, le long de la direction axiale de cette tige (25), faisant face à un poinçon (14), et un ressort à disque (41) déplace la tige centrale (25) par rapport au corps de matrice (27) de sorte que, lorsque le rivet de poinçonnage automatique (1), sous la pression du poinçon (14), est entraîné dans des éléments serrés (2, 3) et que l'extrémité du montant de ce rivet commence à percer l'élément serré (3), sur un côté réception, la tige centrale (25) peut être mise en contact avec la surface côté matrice de l'élément serré (3), sur le côté réception, moyennant quoi la restriction propre à la direction d'entraînement des éléments serrés peut être atténuée ou éliminée.

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