CN202278290U

CN202278290U - Automatic submerged arc welding gun

Info

Publication number: CN202278290U
Application number: CN201120376858XU
Authority: CN
Inventors: 崔智�; 范东龙; 高明军
Original assignee: Sinopec Fourth Construction Co Ltd
Priority date: 2011-10-08
Filing date: 2011-10-08
Publication date: 2012-06-20
Anticipated expiration: 2021-10-08

Abstract

The utility model discloses an automatic submerged arc welding gun, which comprises a contact nozzle. A protective sleeve matched with the contact nozzle is arranged outside the contact nozzle, and the front end of the contact nozzle is a cone reducing to the outlet gradually. Since the front end of the contact nozzle is the cone, a corresponding section of the protective sleeve has a wedged structure, and the front end of the welding gun is in the shape of slender wedge, the welding gun can extend to the inside of a narrow and deep groove of a thick-wall pipeline, the applicable range of the automatic submerged arc welding gun for pipelines is expanded and the thick-wall pipelines can be welded by the automatic submerged arc welding gun. In addition, the automatic submerged arc welding gun is simple in structure, convenient in manufacturing, use, mounting and demounting and low in cost.

Description

A kind of Lincoln weld welding gun

Technical field

The utility model relates to a kind of welding gun, particularly relates to a kind of Lincoln weld welding gun.

Background technology

In current domestic oil-refining chemical construction project; The prefabricated maturation that trends towards further of pipeline batch production; And Lincoln weld becomes the main flow in the prefabricated production day by day, and its huge superiority is embodied in the welding high efficiency of posted sides pipeline, also has the more high advantage of the qualification rate of detection simultaneously.Under the prerequisite that guarantees construction quality, simultaneously again reduce construction cost in order to improve efficiency of construction to posted sides pipeline, groove type adopts " U " type or " V " type usually; Its bevel angle is less; Groove is very narrow, and common welding gun ignition tip slightly can't stretch into welding bead inside, can't realize welding; To above-mentioned situation, the improvement of submerged arc welding gun is imperative.

The utility model content

The utility model provides a kind of Lincoln weld welding gun for solving the technical problem that exists in the known technology, and this welding gun can be deep into the welding of posted sides pipeline groove internal implementation.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of Lincoln weld welding gun; Comprise ignition tip; Said ignition tip outside is provided with the protection sleeve adaptive with it, and the front end of said ignition tip is towards the diminishing cone of outlet.

The part of the corresponding said ignition tip front end of said protection sleeve is a wedge shape.

Advantage and the good effect that the utlity model has are: through the ignition tip front end is arranged to cone; The corresponding section of protection sleeve is the structure of wedge shape; Make the welding gun front end form the wedge shape of narrow length; Can be deep into narrow dark posted sides pipeline groove internal implementation welding, enlarge the scope of application of pipeline automatic welding machine, make automatic submerged-arc welding machine welding posted sides pipeline become possibility.And the utility model is simple in structure, it is easy to use to manufacture, easy accessibility, and cost is low.

Description of drawings

Fig. 1 is the structural representation of the utility model ignition tip;

Fig. 2 is the structural representation of the utility model protection sleeve;

Fig. 3 is Fig. 2 side view;

Fig. 4 is Fig. 2 vertical view.

Among the figure: 1, ignition tip, 2, protection sleeve.

The specific embodiment

For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:

See also Fig. 1; The Lincoln weld welding gun is according to posted sides pipeline groove characteristics and ignition tip operation principle; Change ignition tip 1 front end into cone by original cylinder; Can change its cone length and upper and lower side diameter according to the size and the groove spacing of pipeline wall thickness, to guarantee that ignition tip can be deep into the root of weld.

See also Fig. 2～Fig. 4, be positioned at ignition tip 1 outside protection sleeve 2 and utilize stainless steel tube or copper pipe to make, an end is pressed into the wedge shape sleeve according to pipe wall thickness and ignition tip end-cone body size, guarantees to be deep into the root of weld seam.Protection sleeve should make inner ignition tip waltz through on the one hand, and the not direct contact workpiece of protection ignition tip is avoided short circuit, and it is unobstructed to let solder flux flow on the other hand.The other end of protection sleeve is processed with internal thread.

Although combine accompanying drawing that the preferred embodiment of the utility model is described above; But the utility model is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, is not restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the utility model.

Claims

1. a Lincoln weld welding gun comprises ignition tip, and said ignition tip outside is provided with the protection sleeve adaptive with it, it is characterized in that, the front end of said ignition tip is towards the diminishing cone of outlet.

2. Lincoln weld welding gun according to claim 1 is characterized in that, the part of the corresponding said ignition tip front end of said protection sleeve is a wedge shape.