CN201151041Y - Device for compactly extruding brazing seam of welded tube - Google Patents

Abstract

The utility model relates to a brazing seam squeezing compacting device of a welding pipe, which comprises a welding pipe (3) which needs welding, a welding gun (2) which is arranged on a brazing seam (33) of the welding pipe (3) which needs welding, and a directive wheel (1), wherein the directive wheel (1) is arranged on the welding pipe (3) which needs welding. The brazing seam squeezing compacting device also comprises a pair of squeeze wheel groups (4) which are arranged on the guiding direction (5), wherein the squeeze wheel groups (4) are squeezed and contacted with two sides of the brazing seam (33) and the contact cross section is elliptical. The utility model has the advantages that the inner organization structure of the brazing seam becomes compact through squeezing the brazing seam of the welding pipe by squeeze wheels, the defect which exists in the brazing seam possibly is eliminated, and the welding pipe achieves the quality of a seamless tube.

Description

The weld seam device for compactly extruding of welded tube

Technical field

The utility model relates to a kind of welded tube, relates in particular to a kind of device that the commissure of this welded tube is carried out compactly extruding.

Background technology

Straight seam welded steel pipe in the prior art, copper pipe when welding not butt welded seam carry out squeeze job, the weld seam of welded tube often internal organizational structure is fine and close inadequately, causes the major defect of welded tube relatively to concentrate on the commissure, also is the principal element that influences the welded tube quality.

The weld seam internal organizational structure densification that solves straight seam welded steel pipe, copper pipe is the key that improves the welded tube weldquality.

Summary of the invention

The utility model technical issues that need to address have provided a kind of weld seam device for compactly extruding of welded tube, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises: the welded tube of a need welding, a welding gun that is placed on the welded tube commissure that needs welding, a directive wheel; Described directive wheel is placed on the welded tube that needs welding; Also comprise: a pair of extruding wheels on guide direction; Described extruding wheels contact with the extruding of commissure two sides, and its contacting section is an ellipticity.

Compared with prior art, the beneficial effects of the utility model are: the extruding of the commissure by extruding wheels butt welding pipe makes the internal organizational structure densification of commissure, and eliminates the defective that the commissure may exist, so that welded tube reaches the quality of seamless pipe.

Description of drawings

Fig. 1 is a schematic perspective view of the present utility model;

Fig. 2 is the main cross section figure of Fig. 1;

Fig. 3 is the side cross-sectional view of Fig. 1;

Fig. 4 is a fundamental diagram of the present utility model;

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

By Fig. 1, Fig. 2, Fig. 3 as seen: the utility model comprises: 3, one of the welded tubes of a need welding are placed in 2, one directive wheels 1 of welding gun on welded tube 3 commissures 33 that need welding; Described directive wheel 1 is placed on the welded tube 3 that needs welding; Also comprise: 5 a pair of extruding wheels 4 on guide direction; Described extruding wheels 4 contact with the extruding of commissure 33 2 sides, and its contacting section is an ellipticity;

The ratio of its oval major and minor axis of described ellipticity cross section is 8: 6-8: between 7.5.

Thicker tube wall generally is 8: 6, and thin tube wall generally is 8: 7.5.

The utility model welded tube is guided by guide wheel, along the traffic direction operation, through the welding of welding gun, is admitted to extruding wheels butt welding pipe and pushes.The operation principle of extruding is carried out according to the signal of Fig. 4.

As seen from Figure 4: combination shaping is oval 41 extruding wheels 4, after the welding gun welding fabrication is passed through in the commissure 33 of welded tube 3,42 pairs of welded tubes of extruding force 3 by extruding wheels 4 push from variation in moulding, under the effect of the extruding force 42 of pushing wheels 4, welded tube 3 is squeezed into ellipse, and along 33 extruding of tube wall extruding force 32 butt welded seams.

Through the weld seam of welding gun welding, when entering the extruding wheels, melt metal is solidified, under the squeezing action of extruding wheels, welded tube produces along the tube wall extruding force along the tube wall butt welded seam, and weld seam is under squeezing action, the densification that the institutional framework of weld seam is pressed, thus the quality of weld seam improved.

Claims (2)

1. the weld seam device for compactly extruding of a welded tube comprises: the welded tube (3) of a need welding, a welding gun (2) that is placed on welded tube (3) commissure (33) that needs welding, a directive wheel (1); Described directive wheel (1) is placed on the welded tube (3) that needs welding; It is characterized in that also comprising: a pair of extruding wheels (4) of (5) on guide direction; Described extruding wheels (4) contact with the extruding of commissure (33) two sides, and its contacting section is an ellipticity.

2. the weld seam device for compactly extruding of welded tube according to claim 1, it is characterized in that: the ratio of its oval major and minor axis of described ellipticity cross section is 8: 6-8: between 7.5.

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