Automatic packaging machine for four-color cotton swab barrels

The utility model relates to an automatic packaging machine for four-color cotton swab barrels, which is characterized in that a first color separation mechanism and a second color separation mechanism divide the four-color cotton swab barrels which are disorderly arranged in supplied materials into four single-color channels of a buffer area, and the four single-color channels enter the buffer area after the cotton swab barrels of a certain color in the buffer area are full; the first color separation mechanism is used for removing the cotton swab barrels with the colors into a full material box; the cotton swab barrels behind the buffer area enter a color arrangement mechanism to be automatically arranged according to a set color; the cotton swab barrels after color arrangement enter a forward and reverse arrangement mechanism to be arranged according to required forward and reverse staggered arrangement; the cotton swab barrels which are arranged positively and negatively enter a material arranging mechani