DEVICE FOR MAKING EXTRUSIONS ON METALLIC BELT Russian patent published in 1996 - IPC

FIELD: mechanical engineering. SUBSTANCE: device comprises pair of rollers having outer forming surfaces and mounted for permitting rotation about their parallel axes and mechanism for synchronous rotation of rollers in opposite directions. The first of the rollers is provided with radial punches. The second roller is provided with die hollows for the punches. The mechanism for synchronous rotation of the rollers includes gear wheels coupled with rollers. The device has a means for immediate locking a mutual axial position of the rollers that is made up as a ring hollow provided on one of the roller and a ring projection provided on the other roller that can be introduced in the hollow. One of the gear wheels is mounted for permitting variation in angular position with respect to respective roller. The device is also has a facility for securing the gear wheel to the roller at different angular positions. The facility is made up as arc-like grooves on the gear wheel connected with the roller through fastening members received in the grooves. Each punch received in the groove of the first roller has L-shaped portion. The roller has a ring groove wherein a ring is received. The ring interacts with the L-shaped portions of the punches and locks them in the grooves of the roller. EFFECT: improved design. 4 cl, 2 dwg