| 摘要 |
PURPOSE:To prepare a tube of suitable external diameter automatically and efficiently by a method wherein during continuous molding of a tube the external diameter of the tube is measured and when it reaches the upper limit value the tube is brought into contact with a friction body to make automatic correction. CONSTITUTION:The tube 10 with an iron core 11 is mounted on the rod of an air cylinder 22 and goes on out of contact with a friction body 20 since the support roller 13 equipped on the rod of an air cyinder 22, in a usual state, is at a lifting point. The tube 10 with the iron core 11 passes a braider 15 and when a braid layer 12 begins to be braided the external diameter of the tube 10 is measured by an external diameter measuring device 30 and a measured signal is inputted into a controller 32. When the tube 10 is pulled by the wire 16 through braiding of the braid layer 12 and the external diameter becomes larger than the suitable one, an output signal is sent from the measuring device 30 to the controller 32, the air cylinder 22 operates, the rod 23 shrinks, the support roller 13 falls, the tube 10 touches the friction body 20 and the external diameter of the tube 10 is reduced. |
