Automatic capping vacuum packaging machine

The invention discloses an automatic capping vacuum packaging machine, which comprises a bottom main body and an upper gland which are connected with each other, wherein the upper gland has an openingand closing action relative to the bottom main body; clamping hooks are arranged below the upper gland, and extend into the interior of the bottom main body; clamping mechanisms are mounted in the bottom main body; the clamping mechanisms are matched with the clamping hooks, and have an action of clamping or disengaging with the clamping hooks; the clamping mechanisms comprise shifting blocks andmotors for driving the shifting blocks to rotate; induction devices are mounted around the shifting blocks; and the induction devices can transmit induction signals to a controller to control the motors to rotate or stop. The automatic capping vacuum packaging machine adopts the joint action of the clamping mechanisms and the induction devices to realize the automatic opening and closing of the upper gland relative to the