Automatic module switching system of a combined processing apparatus

An automatic module switching system of a combined processing apparatus, and the automatic module switching system comprising:

• a chassis having
• two sidewalls oppositely defined on the chassis;
• a hanging wall extending between the two sidewalls;
• and
• multiple positioning sets disposed on the hanging wall, and each of the positioning sets including
• at least one first positioning magnetic element;
• and
• at least one positioning hole, and each of the at least one positioning hole being elongated and having a misaligning end and a positioning end;
• a moving mechanism mounted in the chassis;
• a holding device mounted on the moving mechanism, the moving mechanism driven to drive the holding device to move along a first moving direction, the holding device driven to move along a second moving direction on the moving mechanism, and the holding device including
• a fixed bracket connected with the moving mechanism and driven to move along the second moving direction;
• and
• a moving seat mounted to the fixed bracket and being movable along a third moving direction relative to the fixed bracket, and the moving seat having
• a moving holding surface facing toward the hanging wall of the chassis;
• and
• an aligning protrusion and at least one first aligning magnetic element disposed on the moving holding surface;
• and
• multiple processing modules detachably mounted onto the positioning sets of the hanging wall of the chassis and the holding device, and each of the processing module having
• a hanging surface facing toward the hanging wall of the chassis and provided with at least one second positioning magnetic element and at least one positioning protrusion, wherein a positional arrangement of the at least one second positioning magnetic element and the at least one positioning protrusion on the hanging surface corresponds to a positional arrangement of the at least one first positioning magnetic element and the positioning end of the at least one positioning hole of each of the positioning sets on the hanging wall;
• and
• a held surface facing toward the moving mechanism and provided with an aligning recess and at least one second aligning magnetic element, wherein a positional arrangement of the aligning end of the aligning recess and the at least one second aligning magnetic element on the held surface corresponds to a positional arrangement of the at least one first aligning magnetic element and the aligning protrusion on the moving holding surface of the moving seat.