A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Provided is a sleeve for glass tube molding that, without reducing the mechanical strength of the sleeve shaft, can prevent foreign objects such as rust from generating off the sleeve shaft and can prevent foreign objects such as rust from adhering to molten glass. The sleeve 1 for glass tube molding is equipped with a sleeve shaft 10 having a through-hole 11, and is equipped with a pipe member 40 comprising a material having superior rust resistance to the sleeve shaft 10. The pipe member 40 is provided with a main body portion 40a, and a tapered portion 40b having an outer peripheral surface with a tapered shape that increases in diameter the closer to one end side of the pipe member 40. The through-hole 11 is provided with an insertion portion 11a into which the main body portion 40a is inserted, and a contact portion 11b with a tapered shape whereat the outer peripheral surface of the tapered portion 40b comes into contact with one end of the through-hole 11. A portion or all of the inner surface of the through-hole 11 of the sleeve shaft 10 is covered by inserting the pipe member 40 into the through-hole 11 of the sleeve shaft 10.
Provided is a sleeve for glass tube molding that, without reducing the mechanical strength of the sleeve shaft, can prevent foreign objects such as rust from generating off the sleeve shaft and can prevent foreign objects such as rust from adhering to molten glass. The sleeve 1 for glass tube molding is equipped with a sleeve shaft 10 having a through-hole 11, and is equipped with a pipe member 40 comprising a material having superior rust resistance to the sleeve shaft 10. The pipe member 40 is provided with a main body portion 40a, and a tapered portion 40b having an outer peripheral surface with a tapered shape that increases in diameter the closer to one end side of the pipe member 40. The through-hole 11 is provided with an insertion portion 11a into which the main body portion 40a is inserted, and a contact portion 11b with a tapered shape whereat the outer peripheral surface of the tapered portion 40b comes into contact with one end of the through-hole 11. A portion or all of the inner surface of the through-hole 11 of the sleeve shaft 10 is covered by inserting the pipe member 40 into the through-hole 11 of the sleeve shaft 10.
SLEEVE FOR GLASS TUBE MOLDING
HÜLSE ZUR GLASROHRFORMUNG
MANCHETTE DESTINÉE AU MOULAGE D'UN TUBE EN VERRE
HOSHIBA KENICHI (author)
2020-04-01
Patent
Electronic Resource
English
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