The invention discloses a
chain type die clamping device. The device comprises a cylinder, wherein the cylinder comprises a cylinder body, and a
piston rod arranged in the cylinder body. The device further comprises a chain guide seat, a chain, a chain wheel and a die
clamper; the bottom part of the cylinder body is fixed to the chain guide seat; an arc-shaped through groove for guiding the chain moving track is formed in the chain guide seat; one end of the chain extends out of the arc-shaped through groove and is fixedly connected to the die
clamper, and the other end of the chain bypasses the
piston rod to be fixedly connected to the cylinder body; the chain wheel is fixed to a head part of the
piston rod and is engaged with the chain. According to the
chain type die clamping device, the chain guide seat is fixed to a table tray edge of a
punching machine, and the chain vertically moves to drive the die
clamper to horizontally move so as to achieve the effect of pushing and pulling the die clamper to the side edge of a die; meanwhile, a chain driving part is mounted at the outer part of the side edge of the
punching machine, so that the space of the table top of the
punching machine is not occupied for the chain driving part, and as a result, the influence on the use of a big die is avoided.