Pneumatic pincer type drawbench

The invention provides a pneumatic pincer type drawbench. The drawbench comprises a support, a mould installation seat, a driving chain wheel, a driven chain wheel, a transmission chain, a clamping seat, which is movably arranged on the support and is capable of moving along the moving direction of the transmission chain, a clamp arranged on the clamping seat, and a connecting mechanism for connecting the clamping seat to the transmission chain. The connecting mechanism is connected to a connecting member arranged on the clamping seat and is capable of rotating up and down around the clamping seat. The connecting member has a hook part that can hook the roller of the transmission chain. The clamp has a stretchable scissors fork structure, the front end of the scissors fork structure is provided with a first clamping head and a second clamping head, and the first clamping head and the second clamping head are connected, are capable of rotating relative to each other, and form a jaw which can be opened and closed. The clamp seat is also provided with a first cylinder that drives the scissors fork structure to stretch, and is further provided with a second cylinder for driving the connecting member to rotate up and down. The pneumatic pincer type drawbench reduces the work strength and improves the production efficiency of workbench through utilizing cylinders to drive the clamp and the connecting mechanism.