Title:
曲げ装置用の引抜き組立体
Document Type and Number:
Japanese Patent JP4350812
Kind Code:
B2
Abstract:
Drawing assembly for bending machines used for metal shapes, in particular round pieces (11) for reinforcement purposes or metallic wire, the drawing assembly comprising at least a drawing device placed upstream of the shears (13) and the bending unit (14) and at least a straightening device placed upstream of the drawing device, the drawing device comprising at least a rotary drum having at its periphery a containing seating (19) for the round piece (11), the round piece (11) winding partly onto the rotary drum (17) and within the containing seating (19), the rotating drum (17) being at least 300 mm in diameter, the drawing device (12) comprising at least two contrasting cylinders (18) of a diameter of not more than 180 mm, placed in a position of reciprocal proximity and cooperating with the periphery of the rotary drum (17), the contrasting cylinders (18) acting against the periphery so as to define the arc of winding of the round piece (11) onto the rotary drum (17), there being immediately upstream of the rotary drum (17) a deflection assembly (16) which causes a loop-shaped deformation (20) of the round piece (11) passing through, the loop (20) having an equivalent diameter of at least 800 mm, and the round piece (11) cooperating, at the outlet area of the rotary drum (17), with a first straightening-stretching roll (24).
Inventors:
Marcello del Fabro
Giorgio del Fabro
Giorgio del Fabro
Application Number:
JP21516897A
Publication Date:
October 21, 2009
Filing Date:
August 08, 1997
Export Citation:
Assignee:
Emme et Pi Mackine Elet Ronicke Pietatrich Sochieta Per Azioni
International Classes:
B21C3/08; B21C19/00; B21D7/00; B21F23/00; B65H51/10
Domestic Patent References:
| JP8039131A | ||||
| JP58122113A |
Foreign References:
| US5440804 | ||||
| GB1454738A |
Attorney, Agent or Firm:
Takashi Ishida
Jun Tsuruta
Toshio Toda
Masaya Nishiyama
Jun Tsuruta
Toshio Toda
Masaya Nishiyama