| 摘要 |
PURPOSE:To prevent a tube from being deformed, by securing and clamping a part where a tube has been heat-shrunk to the outer circumference of a notched section of a sheave by a split ring. CONSTITUTION:A roll 1 is rotated at a speed on the order of 10rpm and after one end of a tube 2 is heat-shrunk by hot air blown from a nozzle 5, the rotation of the roll 1 is stopped and immediately a split ring 3 is fitted to a notch section A of a sheave 1e of 1f where the one end of the tube 2 is present so that the end is clamped securely. Then the roll 1 is again rotated, and while hot air is blown from a nozzle 5 inclined at an angle of 45-60 deg. to the axis of the roll 1 and directed toward the secured split ring 3, the nozzle 5 is moved at a constant speed from the side where the split ring 3 is present toward the other side. Thus, foreign matter or air can be positively prevented from entering between the barrel outer surface of the roll and the tube inner surface, and the tube can be secured, so that the tube would not be deformed in use. |
