| 摘要 |
<p>The invention relates to a clinching press comprising a press tool (52) and a prebending unit (1) to produce a reciprocating movement in a tool holder (14) of a prebending tool (12), said tool holder being articulated to a foundation (2). The prebending unit (1) has a pressure rod (50) coupled to the press tool (52) and a knee-joint mechanism (28, 30), joined, on the one hand, to a pivot point (36) on the tool holder (14) and, on the other hand, to a fixed pivot point (34) on the foundation (2). The pressure roller (46) is freely rotatably mounted at the connecting point (32) of the links (28, 30). The knee-joint mechanism (28, 30) has a gas pressure spring (38, 42) for returning the mechanism to the starting position shown. The knee-joint mechanism (28, 30) can be moved under the influence of the pressure rod (50), in a countinuous movement from the bent-out position shown to a position bent-out in the opposite direction, the tool holder (14) being displaceable along a predetermined path of movement between a starting position, a work position and an end position.</p> |
