Material processing unit and method of opening and closing a housing part of a housing of a material processing unit

A material processing apparatus, comprising:

• a housing including a first housing part movable between an open position and a closed position relative to a second housing part, the housing defining a mounting space accessible when the first housing part is in the open position;
• at least one movable tool received in the mounting space of housing;
• a drive configured to drive the at least one movable tool;
• a first actuator configured in a locked actuation state to lock the first housing part in the closed position and configured in an unlocked actuation state to unlock the first housing part;
• a second actuator configured to at least permit an opening movement of the first housing part, the second actuator being in a closed actuation state when the first housing part is in the closed position and in an open actuation state when the first housing part is in the open position;
• a first sensor associated with the first actuator and configured to detect the actuation state of the first actuator and to generate a first actuation state signal corresponding to the actuation state of the first actuator;
• a second sensor associated with the second actuator and configured to detect the actuation state of the second actuator and to generate a second actuation state signal corresponding to the actuation state of the second actuator;
• and
• a controller configured to receive the first and second actuation state signals and to provide control signals to control the drive and the first and second actuators such that the controller prevents the first housing part from moving into the open position when the tool is being driven by the drive and/or the controller prevents the at least one movable tool from being driven by the drive when the first housing part is in the open position.