| 摘要 |
PURPOSE:To make a transferred strip body so as to accurately surround a cylindrical body through in a noncontact state by setting up a lot of slit holes, extending in the circumferential direction, on an outer circumferential surface of the cylindrical body opened with an air supply port at one end in axial uniformity, while installing each ring rib projectingly among these slit holes of the cylindrical body. CONSTITUTION:In this air nozzle, bore diameters D1, D2...Dn of air flow distributing ring ribs 6, 6 and so on projectingy installed among respective slit holes 4, 4 and so on of a cylindrical body 1 are constituted to be small in diameter successively in inverse proportion to each of setup positions L1, L2...Ln from the side end of an air supply port 2. Consequently, air quantity to be jetted out of each slit hole 4 is fed out of the air supply port 2 by expansion of a phased area with the bore difference between these air flow distributing ring ribs 6 and 6 installed in front and in the rear of the slit hole 4, distributing air uniformly, and it is discharged out of each slit hole 4. Accordingly, when a transferred strip body such as a film or the like is surrounded through the cylindrical body, this transfers trip body keeps a state of being floated by air pressure out of each slit hole 4, and it is moved as maintaining a noncontact state.
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