| 摘要 |
A bending machine for closing channels which simultaneously bends both side walls of a "U" shaped metal channel, comprising: a support frame; a lower male member slide mounted on the support frame, having a normally closed two-halves male member, each half having a notch in lateral wall thereof, and is associated with driving means for opening the halves of the male member when receiving a channel and for releasing the channel once its side walls thereof have been bent inside each notch, allowing to remove it therefrom; and two lateral bending inserts each slide mounted on the support frame, and associated with driving means, for bending both side walls of the channel into the notches. If desired an upper member, mounted on lowering and lifting means, is provided, having a blank holder to retain a channel on the lower male member when it is closed and/or a die member for simultaneously bend a plate forming a channel, and then close both side walls thereof forming a closed channel.
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