Injection molding machine and pneumatic support mechanism

A pneumatic support mechanism for supporting a movable mold base in an injection molding machine, making a reciprocating movement on the guide rail along with the movable mold base, and adjusting the height of the movable mold base in the vertical direction, the pneumatic support mechanism comprising:

• an upper support plate;
• a lower support plate disposed below the upper support plate, wherein two accommodating cavity groups are arranged at each of a left side and a right side of the lower support plate, each accommodating cavity group includes two accommodating cavities, an air vent is arranged between the two accommodating cavities in each accommodating cavity group, a first air inlet and a second air inlet are respectively formed in a left side and a right side of a first side wall of the lower support plate, the first air inlet is in communication with a leftmost accommodating cavity of the lower support plate, and the second air inlet is in communication with a rightmost accommodating cavity of the lower support plate;
• and
• a plurality of cylinders respectively received in the accommodating cavities.