pipe saw

Abstract

The invention discloses a pipe saw for cutting a pipe. The pipe saw comprises a circular casing, slide blocks, a concave helical gear disc, saw blades, ejector rods, springs, bolts and handles, wherein 4 slide block holes are circumferentially and uniformly formed in the circular casing; the planar square concave helical gear disc is movably connected to one side of the circular casing; a planar square convex helical gear is arranged on one side of each slide block; four slide blocks are mounted inside the four holes of the circular casing; the concave helical gear disc is rotated, and the convex helical gears on the four slide blocks are gradually rotated one by one into four square concave helical gears on the concave helical gear disc so as to fix the slide blocks; the concave helical gear disc is rotated, and the four slide blocks move up and down at the same time; a long hole is formed in one end of each slide block; the ejector rod and the spring are mounted inside the long hole; the small end of the ejector rod penetrates out of the other end of the slide block; the bolt is screwed into the slide block hole to press the spring; a saw blade groove is formed in the other end of the slide block; the saw blade is mounted inside the saw blade groove and is connected with the small end of the ejector rod; each handle is connected with the circular casing through a pawl. By adoption of the structure, the pipe saw cuts the pipe by using four saw blades at the same time, so that the pipe saw can cut the pipe rapidly with a smooth and flat cut and without burrs, is labor-saving, and is a good tool for a pipe repairer.

Description

technical field [0001] The invention relates to a tool for cutting pipes, in particular to a pipe saw with smooth cutting and labor-saving cutting. Background technique [0002] Known CN107070397C pipe sawing and chamfering equipment at present, it is made up of driving part, machine tool clamping device, and machine tool has the cutting knife of circular saw blade and the chamfering knife of disc milling cutter and is installed side by side on an axle Composition, the motor drives the machine tool, while sawing and chamfering thick-walled pipes. This machine tool is suitable for mass processing of pipe fittings in manufacturing plants, but it cannot be used as a pipe cutting tool for pipe repairers. There is a pipe cutter commonly used for cutting pipes. It utilizes the blade to extrude and rotate to extrude the pipe on an inclined plane and cut it off. It cannot be used if the cut surface of the pipe is required to be flat and free of burrs. There is still effort. Con...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of uneven cutting section, burrs, and laboriousness of the pipe cutter, the object of the present invention is to provide a pipe saw with a flat and labor-saving pipe cutting section.

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