Fixing device for open type thin-wall cylinder section assembling and welding

The utility model provides a fixing device for open type thin-wall cylinder section assembly welding, which comprises a base and is characterized in that a fixing frame provided with an arc-shaped through hole is arranged on the base, a plurality of pressing blocks are movably arranged in the arc-shaped through hole, and ejector rods are movably arranged on the pressing blocks. According to the open-type thin-walled cylinder section welding device, the open-type thin-walled cylinder section can be conveniently placed in the arc-shaped through hole of the fixing frame, then the open-type thin-walled cylinder section is fixed in the arc-shaped through hole through the pressing blocks, and then the open-type thin-walled cylinder section is pressed and fixed through the ejector rods on the pressing blocks, so that the open-type thin-walled cylinder section can be welded, and the stability during welding is guaranteed. According to the open-type thin-walled cylinder welding device, the base is provided with the pr