| 摘要 |
A crimping tool with cheek plates that are closed and opened by an axially reciprocating piston via a lever drive. A securing arrangement operates as a function of the piston motion and permits an interruption of the piston drive, only after complete closure of the cheek plates. A pressure medium drive is controlled by a valve with an actuating lever for the piston. The securing arrangement operates jointly with the actuating lever or the pressure medium valve so that the pressure medium supply is interrupted only after complete closure of the cheek plates. A guide is provided at the actuating lever for turning on and off the cheek plate drive, and it extends in the direction of the piston movement. An abutment slides along it and is located on the piston. On one end of the guide, there is a point of engagement, and on the other end, at a distance corresponding to the full piston stroke, a point of disconnection is provided so that during actuation of the actuating lever, the guide and abutment are engaged, thereby holding the actuating lever in the turned-on position for the duration of a full piston stroke.
|
