Fixing device for clamping synchronous belt die

The utility model relates to the technical field of synchronous belt production and processing, and discloses a fixing device for clamping a synchronous belt die, which comprises a worktable, a motor is mounted on the upper surface of the worktable, a first gear is coaxially mounted on a rotor of the motor, a coupler is mounted on the upper surface of the first gear, and a second gear is mounted on the lower surface of the coupler. And a mold is installed on the upper surface of the coupler, and second gears are engaged with the two sides of the first gear correspondingly. The additionally-arranged motor can drive the first gear to rotate, the first gear can also drive the second gears to rotate when rotating, the second gears are located on the two sides of the first gear and can limit the first gear, the first gear cannot deviate when rotating, and the first gear can also drive the mold to rotate stably; by means of the structure, the die is not prone to deviation after being subjected to the counter-acting