| 主权项 |
1. An upper tool holder for holding an upper tool of a press brake exchangeably, comprising:
a holder main body; an attachment portion to an upper table of the press brake, that is provided on an upper portion of the holder main body; a support portion that the upper tool is to be fixed with, and provided on a lower portion of the holder main body; a clamp that is provided swingably at a vertically intermediate position of the holder main body; an actuator that includes a pushing member for pushing the upper portion of the clamp, and fixes the upper tool with the support portion by pushing the upper portion of the clamp by the pushing member; and an open restriction member that has an open restriction portion for restricting, when the upper tool is not fixed with the support portion, the clamp from opening from a position for holding the upper tool in a laterally slidable state, wherein the open restriction member is provided at a position distanced from a pushed position of the upper portion of the clamp by the pushing member with an insertion thereof between the clamp and the holder main body enabled. |
