METHOD TO MAKE BENDS IN THE TRAILING ENDS OF BARS METHOD TO MAKE BENDS IN THE TRAILING ENDS OF BARS FOR BUILDING WORK IN BENDING-SHAPING MACHINES, ANDFOR BUILDING WORK IN BENDING-SHAPING MACHINES, AND BENDING-SHAPING MACHINES FOR BARS FOR BUILDING WO BENDING-SHAPING MACHINES FOR BARS FOR BUILDING WORK WHICH EMPLOY SUCH METHOD RK WHICH EMPLOY SUCH METHOD

摘要

Method to make bends in the trailing ends of bars for building work in bending-shaping machines which comprise in working sequence a drawing and/or straightening assembly (11), a shearing assembly (16), a bending assembly (12) and clamping means (17-117), which have a first retracted position under the working plane and a second working position, the bars for building work being obtained from a bar (10) coming from a feeding section (22) possibly wound in a roll, the bar (10) with all its bends already made except a bend (24) in its trailing end being separated from the feeding section (22) and being fed forwards downstream by a required length, the bend (24) in its trailing end being then carried out in cooperation with the clamping means (17-117). sending-shaping machine for bars for building work, which comprises in working sequence a drawing and/or straightening assembly (11), a shearing assembly (16), a bending assembly (12) and clamping means (17-117), which have a first retracted position under the working plane and a second working position, the bars for building work being obtained from a bar (10) coming from a feeding section (22) possibly wound in a roll, the machine comprising means for the controlled forward displacement (11-12) of the feeding section (22) partly pre-shaped and sheared to a required length.