Square pipe joint necking machine

Abstract

The invention discloses a square pipe joint necking machine. The square pipe joint necking machine is structurally provided with a machine body, a control door, a motor, an adjusting table, a pressingframe, a necking device and a rear driving table, wherein in a clamping process for a pipe joint, an extrusion force is exerted on an elastic ejection device, an ejection body retracts towards the interior of a side ring cavity, and the pipe joint to be necked can make contact with a square necking die conveniently; the elastic ejection device is not subjected to the extrusion force of the pipe joint, and is ejected to the front side end of the square necking die while carrying out concave bending deformation under the springing of spring steel, so that residual chippings are sprung and ejected off, the chippings are prevented from being adhered and accumulated on the wall surface of the square necking die, and after the chippings are ejected off, the necking body is rotated, and the chippings are thrown to a contact port; and a one-way door is extruded to be opened towards the interior of an inner groove chamber, the chippings fall into the inner groove chamber and are collected, then the chippings fall into the bottom of the inner groove chamber through holes in a middle clamping plate and are firmly stuck by a bottom sticking strip, and therefore the situation that in the rotating process, the one-way door is continuously opened and closed, and the chippings fall out is avoided.

Description

technical field [0001] The invention belongs to the field of necking machines, and more specifically relates to a square pipe joint necking machine. Background technique [0002] The pipe joint is a connection tool between two pipes and an important connection point in the installation of pipe fittings. When connecting pipes, the length of the pipe diameter needs to match. Therefore, it is necessary to use a shrinking machine to shrink the pipe joint It is used to change the diameter of the pipe joint, and more accurately and firmly connect the pipes. [0003] Based on the inventor's discovery above, the existing square pipe joint shrinking machine has the following deficiencies: [0004] Shrinking the pipe joint is to pass the square pipe with large diameter through the shrinking die to make the diameter smaller. Since the inner wall of the shrinking die will be slightly worn after use, after shrinking the iron square pipe, it will shrink Iron filings are easy to adhere t...

AI Technical Summary

Problems solved by technology

[0004] Shrinking the pipe joint is to pass the square pipe with large diameter through the shrinking die to make the diameter smaller. Since the inner wall of the shrinking die will be slightly worn after use, after shrinking the iron square pipe, it will shrink Iron filings tend to adhere to the inner wall of the pipe mold, and the accumulation of iron filings on the inner wall will easily cause scratches on the pipe surface when the pipe joint is shrinked, resulting in scratches on the surface of the pipe joint after shrinking

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