CN103567297A

CN103567297A - Connecting die of metal round tubes

Info

Publication number: CN103567297A
Application number: CN201310551512.2A
Authority: CN
Inventors: 任少琳; 毛育智
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-11
Filing date: 2013-11-11
Publication date: 2014-02-12

Abstract

The invention discloses a connecting die of metal round tubes. The metal round tubes comprises the tube A and the tube B. An expanded opening is formed in one end of the tube A, one end of the tube B is inserted into the expanded opening, die bodies are installed on an extruding machine and are a plurality of same cuboid die bodies, the exterior of the tube A is defined by all the die bodies, concentric circles are formed by the die bodies, the tube A and the tube B, and at least two transverse conical protruding edges are arranged on the circular-arc-shaped inner side face, opposite to the outer wall of the tube A, of each die body at intervals. The connecting die is simple in structure, good in environment friendliness, and safe to use due to the fact that no chemical residue exists in surfaces and welding joints after the tubes are connected. Technological operation is easy and convenient to conduct, labor intensity is greatly relieved, all welding follow-up processes are omitted, and machining cost is greatly lowered.

Description

Metal circular tube connecting mold

Technical field

The present invention relates to metal circular tube and connect, particularly a kind of metal circular tube connecting mold.

Background technology

Many fields of modern production and life, capital relates to the connection technique of metal circular tube, existing technique generally all adopts pipe one end enlarging, another root pipe inserts in enlarging, then welding, there is many defects in this technique: peripheral weld is difficult to evenly, operating personnel's skills involved in the labour be had relatively high expectations, careless slightly, welding slag outflow; The oxidation of welding rear tubular member is serious, must affect environmental protection through the chemical treatment of operations such as cleaning, antirust, and processing cost is higher; Pipe fitting after chemical treatment, the chemical composition residue that it is surperficial, is difficult to clean out completely, and particularly, around weld seam, some residues can reside in weld seam for a long time, are unfavorable for using safety.

Summary of the invention

The technical problem to be solved in the present invention, is to provide a kind of metal circular tube connecting mold, and simple in structure, easy and simple to handle, the feature of environmental protection is good, reduces costs, and uses safety.

For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of metal circular tube connecting mold is provided, metal circular tube comprises A pipe and B pipe, and one end of A pipe is provided with enlarging, and insert in enlarging one end of B pipe, mould is arranged on extruder, described mould is some identical cuboid moulds, and all moulds are enclosed in outside A pipe, forms concentric circles with A pipe, B pipe, every mould is managed on the circular arc shaped inside face that outer wall is relative with A, is interval with at least two horizontal taper fins.

Above-mentioned metal circular tube connecting mold, mould structure is simple, and technological operation is easy, owing to being physical connection purely between two metal circular tubes, the feature of environmental protection is good, and pipe quality of connection pattern tool guarantees, overcome and caused the inhomogeneous defect of weld seam because of workpiece form error, reduced and welded required fixture and mould, greatly reduced labour intensity simultaneously, exempted all subsequent techniques of welding, greatly reduce processing cost, and pipe fitting connection rear surface and weld seam, without chemical residue, are used safety.Be widely used in copper pipe and copper pipe, copper pipe and iron pipe, copper pipe and stainless steel tube, copper pipe and aluminum pipe, stainless steel tube and iron pipe, etc. the connection of all kinds of metal circular tubes.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.

Fig. 1 is the longitudinal section of described invention;

Fig. 2 is the cross-sectional view of described invention.

The specific embodiment

Referring to Fig. 1, Fig. 2, a kind of metal circular tube connecting mold is provided, metal circular tube comprises that one end of A pipe 1 and B pipe 2, A pipe 1 is provided with enlarging 3, and insert in enlarging 3 one end of B pipe 2, mould 4 is arranged on extruder 5, described mould 4 is six identical cuboid moulds, and all moulds 4 are enclosed in outside A pipe 1, forms concentric circles with A pipe 1, B pipe 2, every mould 4 is managed on the circular arc shaped inside face that 1 outer wall is relative with A, is interval with two horizontal taper fins 6.Add man-hour, start extruder 5, all moulds 4 push A pipe 1 simultaneously, make A pipe 1 that plastic deformation occur, tightly edge is enclosed within the outer surface of B pipe 2, form the larger magnitude of interference, make to be fastenedly connected between the two, simultaneously, under the squeezing action of all taper fins 6, A manages each correspondence position of 1 inwall, form respectively corresponding the second taper fin 7, the second taper fin 7 embeds B and manages 2 outer walls, make A pipe 1 and B pipe 2 further form the connection of " holding formula ", connect more fastening, can avoid the connection slippage of A pipe 1 and B pipe 2, can bear the axial tension of 4 MPas, complete being fastenedly connected between A pipe 1 and B pipe 2.

Above-described embodiment is the preferred embodiments of the present invention, and all and the similar structure of the present invention and the equivalence of doing change, and all should belong to protection category of the present invention.

Claims

1. a metal circular tube connecting mold, metal circular tube comprises A pipe and B pipe, one end of A pipe is provided with enlarging, insert in enlarging one end of B pipe, and mould is arranged on extruder, it is characterized in that: described mould is some identical cuboid moulds, all moulds are enclosed in outside A pipe, form concentric circles with A pipe, B pipe, every mould is managed on the circular arc shaped inside face that outer wall is relative with A, is interval with at least two horizontal taper fins.