Importance

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Abstract

A tube expander, in which a part of the reference stand is slidably attached to the support column or other member through the slide unit, can be established in the poor environment where dusts and dirts are in the air or when the tube expander for heat exchanger tubes is extremely frequently used, where only the slide body that is worn down can be removed from the slide unit means and a new slide body is attached through the fastening means easily at low cost, thus, there is no need to replace the reference stand itself. The tube expander is configured by a support column 19a formed on a base 19; a stripper plate 9 having strippers 9a which contacts an end plate 15a of the heat exchanger 15 and presses down the end plate 15a for defining a projection length of heat exchanger tubes 16 which are projected from the end plate 15a, the stripper plate 9 being reciprocally movable along a longitudinal direction of the support column 19a; and a reference stand 1 connected to the stripper plate 9 and reciprocally movable along the support column 19a for stopping the stripper plate 9 at a predetermined position. A part of the reference stand is slidably attached to a guide bar 3 formed on the support column 19a through a slide unit 1a; and a slide body id formed separately from a reference stand housing 1A is attached to the slide unit 1a located at the support column through a fastening means.

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First Claim