阅读说明：本技术 一种钢管生产用焊接装置 (Welding set is used in steel pipe production ) 是由 林建维 于 2020-07-22 设计创作，主要内容包括：本发明提供了一种钢管生产用高频直缝焊接装置,所述焊接装置包括焊接座、挤压座、高频焊接座、导向座、封闭罩、第一供气管以及第二供气管,焊接座、挤压座、导向座、高频座、第一供气管以及第二供气管位于封闭罩内,钢管穿设封闭罩的一侧面后依次通过导向座、高频焊接座、挤压座以及焊接座,然后穿设封闭罩的另一侧面；所述第一供气管穿设封闭罩的一侧面并延伸至挤压座远离高频座一侧,第二供气管穿设封闭罩的一侧面,并延伸至挤压座靠近高频座一侧。对供气管的布置设计,气体保护不只在焊接前,也保护焊后焊缝上方,有效的改善整体高频焊接问题；封闭罩对焊接段整体封闭效果,使氩气不易散发,在双重保护下确保焊接过程的惰性气体保护效果。(The invention provides a high-frequency straight seam welding device for steel pipe production, which comprises a welding seat, an extrusion seat, a high-frequency welding seat, a guide seat, a sealing cover, a first air supply pipe and a second air supply pipe, wherein the welding seat, the extrusion seat, the guide seat, the high-frequency seat, the first air supply pipe and the second air supply pipe are positioned in the sealing cover; the first air supply pipe penetrates through one side face of the closed cover and extends to one side, away from the high-frequency seat, of the extrusion seat, and the second air supply pipe penetrates through one side face of the closed cover and extends to one side, close to the high-frequency seat, of the extrusion seat. The gas supply pipe is arranged, so that gas protection is not only carried out before welding, but also is carried out above a welded seam after welding, and the problem of integral high-frequency welding is effectively solved; the whole sealing effect of the sealing cover on the welding section makes argon not easy to diffuse, and the inert gas protection effect of the welding process is ensured under the double protection.)

1. The high-frequency straight seam welding device for steel pipe production is characterized by comprising a welding seat, an extrusion seat, a high-frequency seat, a guide seat, a closed cover, a first air supply pipe and a second air supply pipe, wherein the welding seat, the extrusion seat, the guide seat, the high-frequency seat, the first air supply pipe and the second air supply pipe are located in the closed cover; the first air supply pipe penetrates through one side face of the closed cover and extends to one side, away from the high-frequency seat, of the extrusion seat, and the second air supply pipe penetrates through one side face of the closed cover and extends to one side, close to the high-frequency seat, of the extrusion seat.

2. The high-frequency straight seam welding device for steel pipe production as claimed in claim 1, wherein the gas outlet end of the first gas supply pipe is provided with a gas supply section parallel to the welded steel pipe, and the gas supply section is provided with a plurality of gas outlet holes.

3. The high-frequency straight seam welding device for steel pipe production as claimed in claim 2, wherein the plurality of gas outlets are uniformly distributed on the lower side wall of the gas supply section along the axial direction of the first gas supply pipe, and are positioned right above the weld of the steel pipe.

4. A high-frequency butt welding apparatus for steel pipe production according to claim 2 or 3, wherein the end of the gas supply section is a closed end.

5. The high-frequency straight seam welding device for steel pipe production according to claim 1, wherein the sealing cover comprises a first upright, a second upright, a third upright, a fourth upright and a top cover connected with the top ends of the 4 uprights, a welding seat closing plate is arranged between the first upright and the second upright, an extrusion seat closing plate is arranged between the second upright and the third upright, a guide seat closing plate is arranged between the third upright and the fourth upright, and a high-frequency seat closing plate is arranged between the fourth upright and the first upright.

6. A high-frequency butt welding apparatus for steel pipe production according to claim 5, wherein said weld seat closing plate is fixed to said first support and said second support by screws, and said guide seat closing plate is fixed to said third support and said fourth support by a plurality of screws.

7. The high-frequency straight seam welding device for steel pipe production according to claim 6, wherein openings are oppositely formed in the middle lower portions of the welding seat closing plate and the guide seat closing plate, the openings are respectively closed by a detachable first closing block and a detachable second closing block, holes for the steel pipe to penetrate through are oppositely formed in the first closing block and the second closing block, and the first closing block and the second closing block are respectively fixed on the outer side face of the welding seat closing plate in an oriented mode through a plurality of screws.

8. The high-frequency straight seam welding apparatus for steel pipe production according to claim 6 or 7, wherein the screw is an eye screw.

9. The high-frequency straight seam welding apparatus for steel pipe production according to claim 5, wherein the extrusion seat closing plate comprises a lower plate, a left upper plate and a right upper plate, and the front end seat and the rear end seat of the bottom of the extrusion seat are located outside the extrusion seat closing plate and the high-frequency seat closing plate.

10. The high-frequency straight seam welding device for steel pipe production according to claim 1, wherein the welding holder, the extrusion holder, the high-frequency holder, the guide holder, and the enclosure are all fixed to the machine base bed by bolts.

Technical Field

The invention relates to the technical field of steel pipe processing, in particular to a welding device for steel pipe production.

Background

When ERW high frequency tubulation is welding, the material melting solidification process produces the oxidation easily, causes the welding seam corrosion resistance to reduce to impurity, moisture combine in welding seam and the air, produce the gas pocket easily and cause the welding seam fracture, consequently high frequency tubulation melts to solidification process in the welding, and the welding seam needs pure argon gas to protect, in order to reach the anticorrosive and air isolation effect of welding seam.

Because ERW high frequency welding is to solidification must have 500~800 mm's protection length, however common protective gas covers to the single-point mostly, is difficult to direct application to the high frequency welded tube, therefore the welding stage of tubulation technology needs a gas supply line that can cover before and after the welding to the peripheral welding set who keeps apart with the external world is done to the periphery, in order to ensure that longer welding section can both protect the welding seam, keep apart and external contact.

Disclosure of Invention

Aiming at the technical problems, the invention provides a welding device for steel pipe production, which can ensure that a longer welding section can protect a welding seam and isolate contact with the outside, and is easy to disassemble when a mould is adjusted.

In order to achieve the purpose, the invention adopts the following technical scheme:

a high-frequency straight seam welding device for steel pipe production comprises a welding seat, an extrusion seat, a high-frequency welding seat, a guide seat, a closed cover, a first air supply pipe and a second air supply pipe, wherein the welding seat, the extrusion seat, the guide seat, the high-frequency seat, the first air supply pipe and the second air supply pipe are located in the closed cover; the first air supply pipe penetrates through one side face of the closed cover and extends to one side, away from the high-frequency seat, of the extrusion seat, and the second air supply pipe penetrates through one side face of the closed cover and extends to one side, close to the high-frequency seat, of the extrusion seat.

Furthermore, the air outlet end of the first air supply pipe is provided with an air supply section parallel to the welded steel pipe, and the air supply section is provided with a plurality of air outlet holes.

Furthermore, a plurality of ventholes are evenly distributed on the pipe wall of the lower side of the air supply section along the axial direction of the first air supply pipe and are positioned right above the welding seam of the steel pipe.

Furthermore, the tail end of the gas supply section is a closed end.

Furthermore, the sealed cowling includes first stand, second stand, third stand, fourth stand and the top cap that is connected with 4 stand tops, is equipped with the welded seat closing plate between first stand and second stand, is equipped with extrusion seat closing plate between second stand and third stand, is equipped with guide holder closing plate between third stand and fourth stand, is equipped with high frequency seat closing plate between fourth stand and first stand.

Further, the welding seat closing plate is fixed to the first support column and the second support column through screws, and the guide seat closing plate is fixed to the third support column and the fourth support column through a plurality of screws.

Furthermore, openings are oppositely formed in the middle lower portions of the welding seat sealing plate and the guide seat sealing plate, a first sealing block and a second sealing block are detachably mounted on the openings respectively and sealed, holes for the steel pipes to penetrate through are oppositely formed in the second sealing blocks of the first sealing block, and the first sealing block and the second sealing block are fixed on the outer side face of the welding seat sealing plate in an oriented mode through a plurality of screws.

Further, the screw is an eye screw.

Further, the extrusion seat closing plate comprises a lower plate, a left upper plate and a right upper plate, and the front end seat and the rear end seat at the bottom of the extrusion seat are positioned on the outer sides of the extrusion seat closing plate and the high-frequency seat closing plate.

Furthermore, the welding seat, the extrusion seat, the high-frequency seat, the guide seat and the sealing cover are all fixed on the machine base bed by bolts.

On one hand, the high-frequency welding seam covering is different from the traditional welding air supply, the traditional welding air supply has no distribution problem because a single point faces to the welding seam, the high-frequency welding is self-three-roller die welding, the welding seam is divided by a welding roller, and the air supply is uniform before and after the welding, so the air supply distribution is very important, otherwise the air supply is interfered mutually, the welding device for producing the steel pipe is provided with a first air supply pipe extending to the upper part of the steel pipe after the welding and a second air supply pipe extending to the beginning of the steel pipe positioned near the welding point before the welding, the air supply protection before and after the welding is realized, air outlet holes are distributed on the air supply section of the first air supply pipe along the axial direction of the pipe, and the problem of the; the tail end of the first gas supply pipe is set to be a closed section, gas is not blown to a welding point from the rear of welding, and protective gas flows before and after welding can be prevented from influencing each other; the gas around the welding point is provided by covering a second gas supply pipe, and the second gas supply pipe blows gas to the periphery of the welding point from the front of the welding.

On the other hand, the welding device is provided with the sealing cover, the sealing cover avoids the arrangement of the four structures of the welding seat, the extrusion seat, the guide seat and the high-frequency seat, and a sealing structure is formed in a welding area, so that the sealing cover provides the integral sealing effect of a welding section, argon is not easy to diffuse, and the inert gas protection effect in the welding process is completely ensured under double protection.

Thirdly, a large adjusting space is needed when the welding section is subjected to die change, the welding seat sealing plate and the guide seat sealing plate of the sealing cover are detachably fixed on the upright post through screws, and the first sealing block and the second sealing block which are provided with steel pipe through holes are also detachably fixed through screws; the screw adopts the eyebolt can dismantle fast, provides and adjusts convenient operation of personnel, production that resets fast.

The welding device for steel pipe production disclosed by the invention aims at protecting the periphery of a weld bead, removes adverse effects of impurities and moisture in air on a welding process, greatly improves the problem of weld bead cracking, also improves the problem of oxidation of the weld bead at high welding temperature due to the fact that gas supply is argon inert gas, and effectively improves the problem of integral high-frequency welding by the aid of the arrangement design of gas supply of a gas supply pipe, wherein gas protection is uniformly distributed above the welded weld bead not only before welding but also after welding.

Drawings

FIG. 1 is a first schematic structural diagram of a closure cap of a welding device for producing steel pipes according to the present invention;

FIG. 2 is a second schematic structural view of a closure cap of the welding device for steel pipe production according to the present invention;

FIG. 3 is a third schematic structural view of a closure cap of the welding device for producing steel pipes according to the present invention;

FIG. 4 is a schematic view of the internal structure of the welding apparatus for producing steel pipes according to the present invention;

FIG. 5 is an enlarged schematic view of the gas supply end of the first gas supply pipe of the welding device for steel pipe production according to the present invention.

The device comprises a welding seat 1, a pressing seat 2, a high-frequency seat 3, a guide seat 4, a sealing cover 5, a first air supply pipe 6, a second air supply pipe 7, a steel pipe 8, a screw 9, a front seat 21, a rear seat 22, a first upright post 51, a second upright post 52, a third upright post 53, a fourth upright post 54, a top cover 55, a welding seat sealing plate 56, an extrusion seat sealing plate 57, a guide seat sealing plate 58, a high-frequency seat sealing plate 59, a first sealing block 561, a second sealing block 581, a lower plate 571, an upper left plate 572, an upper right plate 573, an air supply section 61 and an air outlet 611.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

The high-frequency straight seam welding device for steel pipe production shown in fig. 1-5 comprises a welding seat 1, an extrusion seat 2, a high-frequency seat 3, a guide seat 4, a closed cover 5, a first air supply pipe 6 and a second air supply pipe 7, wherein the welding seat 1, the extrusion seat 2, the guide seat 3, the high-frequency seat 4, the first air supply pipe 6 and the second air supply pipe 7 are located in the closed cover 5, and the welding seat, the extrusion seat, the high-frequency seat, the guide seat and the closed cover are all fixed on a machine base bed table through bolts.

In some embodiments, the sealing cap 5 includes a first pillar 51, a second pillar 52, a third pillar 53, a fourth pillar 54, and a top cap 55 connected to top ends of the 4 pillars, a welding seat closing plate 56 is disposed between the first pillar 51 and the second pillar 52, a pressing seat closing plate 57 is disposed between the second pillar 52 and the third pillar 53, a guide seat closing plate 58 is disposed between the third pillar 53 and the fourth pillar 54, and a high frequency seat closing plate 59 is disposed between the fourth pillar 54 and the first pillar 51.

In some embodiments, the weld seat closing plate 56 is secured to the first and second struts 51, 52 by screws 9, and the guide seat closing plate 58 is secured to the third and fourth struts 53, 54 by a plurality of screws 9.

In some embodiments, openings are oppositely formed in the lower middle portions of the welding seat closing plate 56 and the guide seat closing plate 58, the openings are respectively and detachably provided with a first closing block 561 and a second closing block 581 for closing, through holes for steel pipes to penetrate through are oppositely formed in the first closing block 561 and the second closing block 581, and the first closing block 561 and the second closing block 581 are respectively fixed on the outer side faces of the welding seat closing plate 56 and the guide seat closing plate 58 through a plurality of screws 9.

In some embodiments, the screw 9 is an eye screw.

In some embodiments, the through hole is a circular through hole, and the diameter of the circular through hole is adapted to the diameter of the steel pipe.

In some embodiments, the press seat closing plate 57 includes a lower plate 571, a left upper plate 572, and a right upper plate 573, and the front end seat 21 and the rear end seat 22 of the bottom of the press seat 2 are located outside the press seat closing plate 57 and the high-frequency seat closing plate 59.

The steel pipe 8 passes through a through hole on a guide seat closing plate 58 of the closing cover 5, then sequentially passes through the guide seat 4, the high-frequency seat 3, the extrusion seat 2 and the welding seat 1, and then passes through a welding seat closing plate 56 of the closing cover 5; the first gas supply pipe 6 extends to one side of the extrusion seat 2 far away from the high-frequency seat 3 after penetrating through the guide seat closing plate 58 of the closing cover 5, and the second gas supply pipe 7 extends to one side of the extrusion seat 2 close to the high-frequency seat 3 after penetrating through the guide seat closing plate 58 of the closing cover 5.

In some embodiments, the gas outlet end of the first gas supply pipe 6 is provided with a gas supply section 61 parallel to the steel pipe 5, and the gas supply section 61 is provided with a plurality of gas outlet holes 611.

In some embodiments, the plurality of air outlets 611 are uniformly distributed on the lower side wall of the air supply section 61 along the axial direction of the first air supply pipe 6, and are located right above the weld of the steel pipe 5.

In some embodiments, the gas supply section 61 terminates in a closed end.

Those of ordinary skill in the art will understand that: the invention is not to be considered as limited to the specific embodiments thereof, but is to be understood as being modified in all respects, all changes and equivalents that come within the spirit and scope of the invention.