Automatic pressure regulating pneumatic cylinder

An automatic pressure regulating pneumatic cylinder, comprising:

• a pneumatic cylinder, arranged with a connecting element for sealing said pneumatic cylinder on lower inside thereof, a piston slidably configured above said connecting element, a upper air chamber formed inside said pneumatic cylinder above said piston, and a lower air chamber formed inside said pneumatic cylinder between said piston and connecting element, an outside of said pneumatic cylinder further configured with a first air entering passage and second air entering passage allowing external air to one-way flow into said upper air chamber and a first guide passage allowing said external air to one-way flow into said lower air chamber and be converted into internal air;
• an air flow control unit, embedded inside said connecting element and composed of an exhaust floating piston, sealing element, elastic element and exhaust floating piston positioner from top to bottom, said exhaust floating piston allowed to correspondingly form an air passage for opening or closing through normal speed and rapid displacement of said piston and further cause said internal air of said lower air chamber to generate different air pressure resistance, allowing said pneumatic cylinder to achieve automatic internal pressure regulation.