Pitting paper tube pasting device

The utility model discloses a pitting paper tube pasting device, which comprises a surface paper rack with a platform, a gluing device, a tension adjusting device and an adjustable extrusion device, wherein the surface paper rack is arranged next to a tube coiling machine; a paper scroll is arranged at one end of the surface paper rack; the adjustable extrusion device is arranged at the other end of the surface paper rack; the gluing device and the tension adjusting device are arranged on the platform of the surface paper rack between the paper scroll and the adjustable extrusion device; the adjustable extrusion device comprises a fixed bracket, an adjusting screw rod, an adjusting slide block, a leather roller and a spiked club; the adjusting screw rod is arranged at the upper end of the fixed bracket; the lower end of the adjusting screw rod is connected with the adjusting slide block; and the adjusting slide block can move up and down along a track on the fixed bracket under the action of the adjusting screw rod. The pitting paper tube pasting device has the beneficial effects that the procedure of additionally fabricating pits after rolling is omitted, and thus the labor intensity of workers is alleviated; the pits are directly formed, and thus the product quality and the yield of paper tubes are improved.