Squeeze device

A squeeze device configured to be arranged in an electric resistance welded pipe manufacturing line in which an impeder support mandrel is inserted and fixed in an open pipe in a direction from a line upstream side toward a position directly below a squeeze roll, the open pipe being along a pipe manufacturing line in which a forming material is to pass, comprising:

• a U-shaped fixed stand having a U shape with an open top, the electric resistance welded pipe manufacturing line passing through a middle of the U shape;
• a roll support plate composed of a slidable surface plate insertable into and extractable from an inside of the U-shaped fixed stand through the open top of the U-shaped fixed stand in a vertical direction, the roll support plate having an upstream-side main surface;
• and
• a squeeze roll mounted on the upstream-side main surface of the roll support plate and consisting of an upper roll and right and left side rolls configured to be screwed down toward the pipe-shaped material, the upper roll having a configuration with one roll for pressing butting edge portions of the pipe-shaped material from directly above or a configuration with two rolls each for pressing the butting edge portions from diagonally above, the right and left side rolls each having a roll shaft that is a vertical shaft or a tilted shaft tilted outwardly toward a higher position, the roll support plate having space for passage of the pipe-shaped material formed at a position surrounded by the side rolls and the upper roll, the squeeze roll not being mounted with a lower roll, wherein
• the U-shaped fixed stand is mounted with a first screw down device configured to inwardly screw down the right and left side rolls and a second screw down device configured to downwardly screw down the upper roll,
• the squeeze roll becomes changeable by extracting the roll support plate upwardly above the line through the open top of the U-shaped fixed stand without moving the impeder support mandrel in the open pipe, and
• the squeeze device further comprises an open-close lid that fixes the roll support plate in the U-shaped fixed stand after the roll support plate is inserted into the U-shaped fixed stand and closes the open top of the U-shaped fixed stand in a manner allowing the open top to be opened.