Bidirectional cutting belt type saw blade

The utility model relates to the technical field of band saw blade manufacturing, and discloses a bidirectional cutting band saw blade which comprises a first connecting plate, sliding blocks are fixedly connected to the two ends of the first connecting plate respectively, second connecting blocks are slidably connected to the two sides of the two sliding blocks respectively, and a second connecting plate is slidably connected to one side of each second connecting block. First connecting blocks are slidably connected to the two sides of the two second connecting plates correspondingly, and one sides of the two first connecting blocks penetrate through the first threaded holes through first screws correspondingly and are in threaded connection with the first connecting blocks. The device has a detachable function, can be detached during carrying, is convenient to carry, and can be assembled and adjusted according to actual use conditions in the use process, the practicability of the device is greatly improved,