Patent ID: 8336177
Filing Date: 2012-12-25
Classification: B21D,B25B,F04B,Y10T

Abstract:
1. A tool for the connection of tubes (T) by means of connection sleeves (C), the tool comprising a jaw structure comprising two consecutive coplanar curved jaws connected at one end by a hinged joint allowing the jaws to rotate on a rotation axis orthogonal to their common position plane between an open rest position, wherein they define a laterally open reception seat, and a closed work position wherein they define an annular closed reception seat for a connection sleeve (C), each jaw of the jaw structure comprising an outer driving half ring fixed to the respective jaw and an inner support half-ring slidable with respect to the outer half ring on their common curvature axis, the inner and outer half rings forming an inner and an outer ring while the tool is in the work position, each inner half ring being provided with at least one radial engagement recess for housing a respective punch, and each outer half ring comprising a radially shaped profile cooperating with said punch to make the punch slide in its recess when said inner support half-rings rotates along its own curvature axis with respect to the outer driving half-ring, and a device to rotate one of the inner support half rings with respect to its outer driving half-ring, wherein for every punch, the inner surface of said driving half-ring bears a shaped profile acting as a cam, and a cam follower interposed between said shaped profile and the related punch.