METHOD OF MANUFACTURING FOR A SNAIL TYPE OF PIPE COIL AND AN APPARATUS THEREFORE

摘要

The present invention relates to a method of manufacturing a snail-shaped pipe coil, wherein the circumferential surface is made up of a plurality of stages while descending from the top, the multi-stage circumferential surface descends from the top to the bottom, the radius from the center of the mold to the circumferential surface The semicircular grooves are connected to each other to form a snail-shaped coil shape while being linearly enlarged or reduced, and have a semicircular groove equal to the diameter of the pipe to be formed on the multistage circumferential surface along the multistage circumferential surface, A mold manufacturing step of manufacturing a molding multistage mold having a rotating shaft hole for inserting the mold; By installing the multi-stage mold in a pipe bending machine and rotating the straight pipe in a radial direction with respect to the multi-stage circumferential surface, a preliminary pipe coil having a three-dimensional pipe coil whose radius increases or decreases linearly from the top to the bottom thereof is linearly manufactured. Manufacturing step; Compression molding of the three-dimensional pipe coil made in the preliminary manufacturing step is composed of a complete step of molding so that the pipe coil from the smallest radius to the largest radius is located on the same plane. The method according to the present invention is made by installing a multi-stage mold as described above in a pipe bending machine, the pipe bending machine is installed in the main body to rotate the multi-stage mold and the multi-stage mold. A support for holding the end of the straight pipe fixedly fixed, a press for pressing the straight pipe against the circumferential surface of the multi-stage mold to form a snail, and a tip inserted into the straight pipe to prevent deformation of the straight pipe. While the core is installed in the rear end comprises a pipe support rod fixedly attached to the protrusion of the main body. By using the method and apparatus of the present invention, the hollow straight pipe can be bent into a snail-shaped coil shape without deforming the hollow straight pipe.;Snail pipe coil manufacturing method, snail pipe coil manufacturing apparatus,