Freely-mounted and adjustable miniature air cylinder

The utility model belongs to the technical field of miniature air cylinders, and provides a freely-installed and adjusted miniature air cylinder which comprises a cylinder barrel and a fixing frame, a clamping groove with an opening in the front end is formed in the fixing frame, the cylinder barrel is arranged in the clamping groove in a clamping mode, and the telescopic end of the cylinder barrel faces the front side. An embedded through groove is formed in the bottom face of the fixing frame, at least two screw holes are formed in the side wall of one side of the fixing frame, and an openable connector used for being connected with an air inlet pipe is arranged on the top side of the fixing frame. The air cylinder can be fixedly installed through the embedded through groove in the bottom face of the fixing frame and can also be fixedly installed through the screw hole in the side wall of the fixing frame, and meanwhile the fixing angle of the fixing frame can be changed, so that the air cylinder is fixed i