Single-cylinder parallel mold closing mechanism

The invention discloses a single-cylinder parallel mold closing mechanism. The single-cylinder parallel mold closing mechanism comprises an oil cylinder connecting base fixedly connected to a frame of an injection molding machine, and a mold opening/closing oil cylinder fixedly connected to the oil cylinder connecting base, wherein the front end of a piston rod of the mold opening/closing oil cylinder is connected with a pushing arm through a screw rod; guide rods are respectively arranged on the two edges of the pushing arm; the two ends of the pushing arm are respectively connected with one end of a connecting rod; the other end of the connecting rod is connected with one end of a pushing rod; the middle and the other end of the pushing rod are respectively connected with elbow rods; and the two ends of the elbow rods are respectively connected with a mold frame assembly. The single-cylinder parallel mold closing mechanism adopts single cylinder to drive left and right mold frames to perform mold opening/closing actions; the mold opening/closing actions are synchronous and stable, so that shoe products do no clamp uppers when molds are closed for bottoming; and shoe lasts are prevented from being collided and damaged when the molds are opened for lifting the shoe lasts, so that the product quality is guaranteed, and the service life of the molds is prolonged.