Slotting device for metal pipe and slotting method

Abstract

The invention relates to a slotting device for a metal pipe. The slotting device for the metal pipe comprises a base, wherein an accommodating tank for storing the metal pipe is arranged on the base; a hob core rod is arranged on the accommodating tank; the metal pipe is sleeved on the hob core rod; the slotting device which is mounted on the base is arranged right above the accommodating tank; the slotting device comprises a hob wheel fixing base and a hob wheel; the hob wheel is fixed on a rolling shaft with a bearing through a hob positioning device; the bearing is fixed on the hob wheel fixing base; and a to-be-slotted part of the metal pipe placed in the accommodating tank is pressed by the hob wheel. The invention also relates to a slotting method adopting the slotting device for the metal pipe. A long slot which is drawn according to the slotting device and the slotting method provided by the invention is free from jointed notch and small burr of the long slot punched by using a mould; the hob core rod is free from impact force of a punching machine, so that the service life of the hob core rod is greatly prolonged; a slot can be formed on a small pipe; the whole slotting process is a continuous linear motion; and compared with the punching machine, the slotting device has the advantage that the production efficiency is greatly increased.

Description

technical field [0001] The invention relates to the field of pipe fitting processing equipment, in particular to a metal pipe slotting device and a slotting method. Background technique [0002] The existing technology of opening long grooves in metal pipes is mainly to use a mold to punch the grooves in sections multiple times to form a relatively long groove. The main disadvantages are: 1) The long grooves opened have interfaces, and the burrs at the interfaces are relatively large; 2 ) The inner mold core of the mold is impacted by the punching machine, and the strength requirement is high; 3) Affected by the second point, the long slot opened has a relatively large limit, and the size of the inner cavity of the pipe is required to be relatively large, that is, the core is required The rod is big enough and has enough strength; 4) The efficiency of slotting is low for multiple punches in segments. Contents of the invention [0003] The object of the present invention i...

AI Technical Summary

Problems solved by technology

[0002] The existing technology for opening long grooves in metal pipes is mainly to use a mold to punch grooves in sections multiple times to form a relatively long groove. The main disadvantages are: 1) The long grooves opened have interfaces, and the burrs at the interfaces are relatively large; 2 ) The core in the tube of the mold is impacted by the punching machine, and the strength requirement is high; 3) Affected by the second point, the long groove opened has a relatively large limit, and the size of the inner cavity of the tube is required to be relatively large, that is, the core is required The rod is big enough and has enough strength; 4) The efficiency of slotting is low for segmented multiple punching

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