Cylindrical pipe flanging die

Abstract

The invention relates to a die, and in particular relates to a cylindrical pipe flanging die which comprises an inner core shaft, an inner core pipe, a gasket and an outer core shaft housing, and is characterized in that the outer diameter of the inner core pipe is smaller than that of the inner core shaft and the inner core pipe is connected with the inner core shaft; a step is formed at one end of the inner core shaft and the gasket is in slide fit with the step of the inner core shaft; the side faces of the inner core shaft are partially plane-shaped; and the outer core shaft housing is provided with a flanging step inwards. The cylindrical pipe flanging die is characterized in that the inner core shaft housing is provided with the flanging step, the gasket is sleeved to the step and can be assembled and disassembled optionally, and the inner core shaft is pulled out after processing while the gasket is still left in an end of the cylindrical pipe; with small length, the gasket can be turned by 90 degrees to avoid stretching steps in side face holes of the cylindrical pipes, so that the technical problem of completing flanging machining from two positions toward the interior of the pipe at a near distance with high mechanical efficiency for the same pipe is solved.

Description

technical field The invention relates to a mold, in particular to a cylindrical tube flanging mold. Background technique There are many types of metal thin-walled tubes, and most manufacturers use butt welding for welding points between metal thin-walled tubes used in radiators and heat exchangers. The disadvantage is that the welding density of thin-walled tubes is uneven and easy to For water leakage, it is good to use flanging and welding, but manual flanging is labor-intensive and inefficient, which brings inconvenience to the operation, especially on the basis of a flanged stretching step in the side hole of a cylindrical tube and then close It is not easy to mechanically flanging the end of the cylindrical pipe. Contents of the invention The object of the present invention is to provide a cylindrical tube flanging mold. Due to the requirements of the previous processing technology, it is necessary to flanging and stretching steps in the side hole of the cylindrical...

AI Technical Summary

Problems solved by technology

There are many types of metal thin-walled tubes, and most manufacturers use butt welding for welding points between metal thin-walled tubes used in radiators and heat exchangers. The disadvantage is that the welding density of thin-walled tubes is uneven and easy to For water leakage, it is good to use flanging and welding, but manual flanging is labor-intensive and inefficient, which brings inconvenience to the operation, especially on the basis of a flanged stretching step in the side hole of a cylindrical tube and then close It is not easy to mechanically flanging the cylindrical pipe end

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