| 摘要 |
A thomson molding device is provided to shorten the length section of an air channel connecting the inside and the outside of a cutting blade by installing a path cover on an air path groove to open both ends of the air path groove. A thomson molding device comprises a mold plate and a mold part. The mold plate(24) is formed on the air path groove of a recess shape. The mold part(20) comprises a path cover being installed at the air path groove to open both ends of the air path groove. The path cover is formed in a tube shape and an auxiliary passing hole is formed in the inside section of the cutting blade. A plurality of path covers are installed with corresponding to each air path groove and are installed at constant intervals in the inside section of the cutting blade. |
