The utility model discloses a large-capacity rubber cylinder, which comprises a cylinder body and a
tail cover, one end of the rubber cylinder is provided with a rubber outlet
nozzle, the other end of the rubber cylinder is in
interference fit with the
tail cover, the other side, opposite to the cylinder body, of the
tail cover is provided with a concave basin cavity, a plurality of fins distributed at intervals are arranged in the basin cavity, and the plurality of fins are all detachably connected with the tail cover. A plurality of slots for inserting the fins are formed in one end, opposite to the glue outlet
nozzle, of the glue
barrel, and are distributed at the periphery of the glue outlet
nozzle. When only a small amount of glue is left in the glue
barrel, one ends of the detached fins are inserted into the inserting grooves, the glue outlet nozzle of the glue
barrel faces downwards, the glue barrel is placed in an inverted mode, the glue in the glue barrel is gathered at the glue outlet nozzle under the action of self gravity, and the glue barrel is convenient and time-saving to use.