| 摘要 |
PROBLEM TO BE SOLVED: To easily fix a thread guide cylinder and rapidly detach the cylinder to read just the cylinder by forming the thread guide cylinder from a rotary sleeve in which the cylinder rotates about a fixing center part. SOLUTION: A thread guide cylinder 4 is formed from a fixed axis 5 in a fixed bearing 6 and a rotary sleeve 7. The sleeve 7 is mounted on bearing devices 8 and includes a protection coating 9 of polyurethane. The rotation of the sleeve 7 is ensured by a drive pulley 10 which is located at an end of the sleeve 7 and constitutes a part integral with the sleeve 7. The sleeve 7 has a releasing chamber 11 through which cooling fluid can be passed to control temperatures, if required. |
