| 摘要 |
The present invention provides a tube expansion device that uses the simple and reliable movement of side regulating bodies to enable the prevention of decreases in productivity, even when the left and right end of a heat exchanger, i.e. the width of the heat exchanger, increases or decreases, or when insertion tubes are increased from a single row to multiple rows and the thickness of the heat exchanger increases. Not only if the width of the heat exchanger or the thickness of the heat exchanger increases of decreases, but also if the tubes of a (tall) heat exchanger having a long overall length are expanded, and if a rod-shaped threaded male member and an expanding and contracting rod of a cylinder, which is the reciprocating means of a reference platform, momentarily receive the deadweight of a stripper plate via the reference platform, the deflection and wear on the expanding and contracting rod and the rod-shaped threaded male member, and damage to the screw thread and the cylinder seal member, etc., can be prevented by supporting the reference platform at multiple positions. The tube expansion device, which is provided with side regulating bodies that position a clamped heat exchanger in a tube expansion position, is characterized by the side regulating bodies using magnets to attach to and detach from a rear surface regulating body for the heat exchanger provided to the pipe expansion device, or a receiving body to which the rear surface regulating body is provided. |
