| 摘要 |
A machine (1) to position an inner pipe (7) of a coil (5) for heat exchangers, for instance a gas boiler or the like, the coil (5) comprising an outer pipe (6) wherein such inner pipe (7) is inserted, said outer pipe (6) having free ends (11, 13) from which corresponding free ends (12, 14) of the inner pipe (7) project; said machine comprises support means (16, 23) and constraining means (19, 26) to support and constrain said coil respectively and pusher means (42) movable according to an alternating motion to and from a free end (12, 14) of the inner pipe (7) that is opposite thereto, said pusher means (42) cooperating alternatively with such ends (12, 14) so as to displace at least one section of the inner pipe (7) adjacent thereto and located in the outer pipe (6) close to a wall of said outer pipe adjacent to the end (11, 13) of the latter from which projects the end (12, 14) of the inner pipe which said pusher means (42) cooperate with. |
