Pneumatic punching machine

• Main Author: LYU QIHUA
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2016
• Subjects: PERFORMING OPERATIONS; PRESSES; PRESSES IN GENERAL; TRANSPORTING

The invention discloses a pneumatic punching machine. The pneumatic punching machine comprises support frames and a crank arm structure matched with the support frames. The crank arm structure comprises slide rails, a sliding block, a crank arm, a stroke adjusting mechanism and an air cylinder, wherein the slide rails are vertically arranged between the two adjacent sidewalls of the support frames; the sliding block is in sliding fit with the slide rails; one end of the crank arm is hinged to the upper end of the sliding block; the stroke adjusting mechanism is hinged to the bent part of the crank arm; the air cylinder is hinged to the other end of the crank arm; and the lower end of the sliding block is provided with a punch shank. Through the arrangement of the crank arm and push and pull of the air cylinder, punching force of the punch shank can be effectively increased; the stroke of the punching machine can be adjusted conveniently and rapidly through the stroke adjusting mechanism hinged to the bent par