Welding seam welding device for welding steel pipe

Abstract

The utility model discloses a weld seam welding device for welding a steel pipe, which relates to the technical field of seamed steel pipe production, and comprises a base, the right end of the upper surface of the base is connected with a magnetic conducting bar mounting rack, the lower end of the magnetic conducting bar mounting rack is connected with a magnetic conducting bar mounting pipe in a penetrating manner, and the left side of the magnetic conducting bar mounting pipe is connected with a magnetic conducting bar; a steel belt shaping mechanism is arranged on the upper surface of the base and located on the left side of the magnetic conductive rod mounting frame, a steel belt shaping mechanism is arranged on the upper surface of the base and located on the left side of the steel belt shaping mechanism, a high-frequency generator is arranged on the upper surface of the base and located on the left side of the steel belt shaping mechanism, and the rear side face of the high-frequency generator is connected with the two ends of an induction coil. According to the device, the position of an opening of a steel belt is kept not to deviate through the steel belt shaping mechanism, the welding stability is improved, the opening of the steel belt is locally and rapidly heated through the induction coil and the magnetic conductive bar, and the welding efficiency and effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipe production, and specifically relates to a weld welding device for welded steel pipes. Background Art

[0002] The production of seamless steel pipes generally uses a weld welding device to shape a steel strip into a tubular shape, then weld the opening of the steel strip, and finally form a seamless steel pipe. For example, a weld welding device for welded steel pipes described in the patent with the patent publication number CN215880596U. When welding, the position of the opening of the steel strip is prone to deviation, resulting in difficulty for the welding torch head to maintain a direct alignment with the opening of the steel strip. Moreover, the action range of the welding torch head is small, and it is easy to produce the phenomenon of incomplete penetration, and the final welding effect is poor.

[0003] Based on this, a weld welding device for welded steel pipes is now provided, which can eliminate the drawbacks of existing devices. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a weld welding device for welded steel pipes to solve the problems in the background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A weld welding device for welded steel pipes includes a base. A magnetic guide rod mounting frame is connected to the right end of the upper surface of the base. The lower end of the magnetic guide rod mounting frame penetrates and connects a magnetic guide rod mounting tube. A magnetic guide rod is connected to the left side of the magnetic guide rod mounting tube. A steel strip shaping mechanism is arranged on the upper surface of the base to the left of the magnetic guide rod mounting frame. A steel strip trimming mechanism is arranged on the upper surface of the base to the left of the steel strip shaping mechanism. A high-frequency generator is arranged on the upper surface of the base to the left of the steel strip trimming mechanism. The two ends of an induction coil are connected to the rear side of the high-frequency generator. An extrusion structure is arranged on the upper surface of the base to the left of the high-frequency generator.

[0007] On the basis of the above technical solutions, the utility model also provides the following optional technical solutions:

[0008] In an optional solution: The steel strip shaping mechanism includes a pair of shaping roller brackets connected to the upper surface of the right end of the base. The bottom surface of the shaping roller bracket is rotatably connected to a shaping roller. The upper surface of the top end of the shaping roller bracket is connected to a shaping roller motor. The power output shaft of the shaping roller motor penetrates the top end of the shaping roller bracket and is connected to the upper end of the shaping roller.

[0009] In an alternative solution: The steel strip shaping mechanism includes a pair of upper shaping roller brackets symmetrically connected to the front and rear sides on the left of the steel strip shaping mechanism on the upper surface of the base. The upper shaping roller brackets are rotatably connected through the upper shaping roller rotating shafts. The front end of the upper shaping roller rotating shaft is connected to the power output shaft of the shaping roller motor. The shaping roller motor is connected to the front end face of the front upper shaping roller bracket. The upper shaping roller rotating shaft is coaxially connected with an upper shaping roller. A weld correction block is coaxially arranged in the middle of the upper shaping roller. A first square perforation is provided on the upper surface of the base directly below the upper shaping roller. Lower shaping roller brackets are respectively connected to the front and rear sides of the first square perforation. A lower shaping roller is rotatably connected between the pair of lower shaping roller brackets.

[0010] In an alternative solution: The extrusion structure includes pressure roller brackets symmetrically arranged on the front and rear sides to the left of the high-frequency generator on the upper surface of the base. A pressure roller is rotatably connected between the pair of pressure roller brackets. The front end of the pressure roller penetrates through the pressure roller bracket and is connected to the power output shaft of the pressure roller motor. The pressure roller motor is connected to the front end face of the front pressure roller bracket. A support unit is provided on the upper surface of the base below the pressure roller.

[0011] In an alternative solution: The support unit includes a pair of support roller brackets slidably connected to the left end of the base. The support roller brackets are symmetrically arranged on the front and rear sides directly below the pressure roller. A support roller is rotatably connected to the upper surface of the support roller brackets. A second square perforation is provided on the upper surface of the base at the position of the support roller. A support roller motor is connected to the lower surface of the support roller within the second square perforation.

[0012] In an alternative solution: A magnetic conduction rod housing is connected to the outside of the magnetic conduction rod. A water outlet groove is provided on the periphery of the pressure roller motor. A water inlet perforation is provided at the axis of the magnetic conduction rod. The water inlet perforation communicates with the magnetic conduction rod installation pipe. The right end of the magnetic conduction rod installation pipe communicates with a cooling water pipe.

[0013] In an alternative solution: The induction coil is made of highly conductive copper.

[0014] In an alternative solution: The wire of the induction coil has a hollow structure.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The present utility model keeps the opening position of the steel strip from shifting through the steel strip shaping mechanism, improving the stability of welding. The present utility model realizes rapid local heating of the steel strip opening by setting an induction coil and a magnetic conduction rod, improving the welding efficiency and effect. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the structure above the upper right side of the front end of the present utility model.

[0018] Figure 2Schematic diagram of the upper left structure at the rear end of the present utility model.

[0019] Figure 3 Schematic diagram of the lower left structure at the front end of the present utility model.

[0020] Figure 4 Schematic diagram of the cross-sectional structure of the magnetic conduction rod of the present utility model.

[0021] Annotation of reference numerals: 100, base; 201, shaping roller; 202, shaping roller bracket; 203, shaping roller motor; 301, upper profiling roller; 302, upper profiling roller bracket; 303, upper profiling roller rotating shaft; 304, profiling roller motor; 305, lower profiling roller; 306, lower profiling roller bracket; 307, first square perforation; 308, weld correction block; 401, high-frequency generator; 402, induction coil; 501, supporting roller; 502, supporting roller bracket; 503, supporting roller motor; 504, second square perforation; 601, pressure roller; 602, pressure roller bracket; 603, pressure roller motor; 701, magnetic conduction rod mounting frame; 702, magnetic conduction rod mounting tube; 703, magnetic conduction rod; 704, cooling water pipe; 705, water outlet groove; 706, magnetic conduction rod housing; 707, water inlet perforation. Detailed implementation manners

[0022] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0023] In one embodiment, as Figures 1-4 shown, a weld welding device for welded steel pipes includes a base 100. A magnetic conduction rod mounting frame 701 is connected to the right end of the upper surface of the base 100. The lower end of the magnetic conduction rod mounting frame 701 penetrates and is connected to a magnetic conduction rod mounting tube 702. The left side of the magnetic conduction rod mounting tube 702 is connected to a magnetic conduction rod 703. A steel strip shaping mechanism is provided on the upper surface of the base 100 to the left of the magnetic conduction rod mounting frame 701. A steel strip profiling mechanism is provided on the upper surface of the base 100 to the left of the steel strip shaping mechanism. A high-frequency generator 401 is provided on the upper surface of the base 100 to the left of the steel strip profiling mechanism. Both ends of an induction coil 402 are connected to the rear side of the high-frequency generator 401. An extrusion structure is provided on the upper surface of the base 100 to the left of the high-frequency generator 401. After passing through the shaping mechanism, the steel strip will be bent into a C shape, and then the shape of the steel strip is corrected by the profiling mechanism to make it close to a circular shape, and the position of the opening of the steel strip is kept unchanged. The induction coil 402 cooperates with the magnetic conduction rod 703 to perform heat treatment on the profiled steel strip, and at the same time, the extrusion structure closes the weld to complete the welding operation.

[0024] In one embodiment, as Figure 1As shown, the steel strip shaping mechanism includes a pair of shaping roller brackets 202 connected to the upper surface of the right end of the base 100. The lower surface of the shaping roller bracket 202 is rotatably connected to a shaping roller 201. The upper surface of the top end of the shaping roller bracket 202 is connected to a shaping roller motor 203. The power output shaft of the shaping roller motor 203 passes through the top end of the shaping roller bracket 202 and is connected to the upper end of the shaping roller 201.

[0025] In one embodiment, as Figure 1 and Figure 3 shown, the steel strip trimming mechanism includes a pair of upper trimming roller brackets 302 symmetrically connected to the front and rear sides of the upper surface of the base 100 on the left side of the steel strip shaping mechanism. The upper trimming roller bracket 302 is rotatably connected through an upper trimming roller rotating shaft 303. The front end of the upper trimming roller rotating shaft 303 is connected to the power output shaft of a trimming roller motor 304. The trimming roller motor 304 is connected to the front end face of the front upper trimming roller bracket 302. The upper trimming roller rotating shaft 303 is coaxially connected with an upper trimming roller 301. A weld correction block 308 is coaxially provided in the middle of the upper trimming roller 301. A first square perforation 307 is provided on the upper surface of the base 100 directly below the upper trimming roller 301. Lower trimming roller brackets 306 are respectively connected to the front and rear sides of the first square perforation 307. A lower trimming roller 305 is rotatably connected between the pair of lower trimming roller brackets 306.

[0026] In one embodiment, as Figure 1 and Figure 2 shown, the extrusion structure includes pressure roller brackets 602 symmetrically arranged on the front and rear sides to the left of a high-frequency generator 401 on the upper surface of the base 100. A pressure roller 601 is rotatably connected between the pair of pressure roller brackets 602. The front end of the pressure roller 601 passes through the pressure roller bracket 602 and is connected to the power output shaft of a pressure roller motor 603. The pressure roller motor 603 is connected to the front end face of the front pressure roller bracket 602. A support unit is provided on the upper surface of the base 100 below the pressure roller 601.

[0027] In one embodiment, as Figures 1-3 shown, the support unit includes a pair of support roller brackets 502 slidably connected to the left end of the base 100. The support roller brackets 502 are symmetrically arranged on the front and rear sides directly below the pressure roller 601. The upper surface of the support roller bracket 502 is rotatably connected to a support roller 501. A second square perforation 504 is provided on the upper surface of the base 100 at the position of the support roller 501. A support roller motor 503 is connected to the lower surface of the support roller 501 within the second square perforation 504.

[0028] In one embodiment, as Figure 4As shown, a magnetic conduction rod housing 706 is externally connected to the magnetic conduction rod 703. A water outlet groove 705 is provided on the periphery of the press roller motor 603. An inlet perforation 707 is provided at the axis of the magnetic conduction rod 703. The inlet perforation 707 communicates with the magnetic conduction rod installation pipe 702. The right end of the magnetic conduction rod installation pipe 702 communicates with a cooling water pipe 704.

[0029] In one embodiment, as Figure 2 shown, the induction coil 402 is made of highly conductive copper.

[0030] In one embodiment, as Figure 2 shown, the wire of the induction coil 402 has a hollow structure.

[0031] The above embodiment discloses a weld welding device for welded steel pipes. The steel strip enters the shaping mechanism from below the magnetic conduction rod installation pipe 702. Under the extrusion and traction of a pair of shaping rollers 201, the steel strip is initially shaped into a C shape and moves to the left. When the initially shaped steel strip passes over the upper shaping roller 301 and the lower shaping roller 305, its shape is further corrected to be close to a circle. The opening of the steel strip faces upward. The weld correction block 308 is inserted into the opening of the steel strip to prevent the weld offset caused by the rotation of the steel strip itself. Then, the high-frequency generator 401 supplies high-frequency alternating current to the induction coil 402 and cooperates with the guiding effect of the magnetic conduction rod 703 to realize local rapid heating of the opening of the steel strip directly below the press roller 601. While reaching the molten state on both sides of the opening of the steel strip, it is extruded and fused together by two support rollers 501 and the press roller 601 to complete the welding.

[0032] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A welding device for the weld seam of a welded steel pipe, comprising a base (100); It is characterized in that On the upper surface of the right end of the base (100), a magnetic rod mounting bracket (701) is connected. The lower end of the magnetic rod mounting bracket (701) penetrates and is connected to a magnetic rod mounting tube (702). The left side of the magnetic rod mounting tube (702) is connected to a magnetic rod (703). On the upper surface of the base (100), a steel strip shaping mechanism is provided to the left of the magnetic rod mounting bracket (701). On the upper surface of the base (100), a steel strip trimming mechanism is provided to the left of the steel strip shaping mechanism. On the upper surface of the base (100), a high-frequency generator (401) is provided to the left of the steel strip trimming mechanism. The two ends of an induction coil (402) are connected to the rear side of the high-frequency generator (401). On the upper surface of the base (100), an extrusion structure is provided to the left of the high-frequency generator (401).

2. The weld welding device for a welded steel pipe according to claim 1, characterized in that, The steel strip shaping mechanism includes a pair of shaping roller brackets (202) connected to the upper surface of the right end of the base (100). The upper surface of the bottom end of the shaping roller bracket (202) is rotatably connected to a shaping roller (201). The upper surface of the top end of the shaping roller bracket (202) is connected to a shaping roller motor (203). The power output shaft of the shaping roller motor (203) penetrates the top end of the shaping roller bracket (202) and is connected to the upper end of the shaping roller (201).

3. The welding device for the weld seam of a welded steel pipe according to claim 1, characterized in that, The steel strip trimming mechanism includes a pair of upper trimming roller brackets (302) symmetrically connected to the front and rear sides on the upper surface of the base (100) to the left of the steel strip shaping mechanism. The upper trimming roller bracket (302) is rotatably connected through an upper trimming roller rotating shaft (303). The front end of the upper trimming roller rotating shaft (303) is connected to the power output shaft of a trimming roller motor (304). The trimming roller motor (304) is connected to the front end face of the front upper trimming roller bracket (302). The upper trimming roller rotating shaft (303) is coaxially connected with an upper trimming roller (301). A weld seam correction block (308) is coaxially provided in the middle of the upper trimming roller (301). On the upper surface of the base (100) directly below the upper trimming roller (301), a first square perforation (307) is provided. Lower trimming roller brackets (306) are respectively connected to the front and rear sides of the first square perforation (307). A lower trimming roller (305) is rotatably connected between the pair of lower trimming roller brackets (306).

4. A welding device for the weld seam of a welded steel pipe according to claim 1, characterized in that, The extrusion structure includes pressure roller brackets (602) symmetrically arranged on the front and rear sides to the left of the high-frequency generator (401) on the upper surface of the base (100). A pressure roller (601) is rotatably connected between the pair of pressure roller brackets (602). The front end of the pressure roller (601) penetrates the pressure roller bracket (602) and is connected to the power output shaft of a pressure roller motor (603). The pressure roller motor (603) is connected to the front end face of the front pressure roller bracket (602). A support unit is provided on the upper surface of the base (100) below the pressure roller (601).

5. A weld welding device for welded steel pipes according to claim 4, characterized in that, The support unit includes a pair of support roller brackets (502) slidably connected to the left end of the base (100). The support roller brackets (502) are symmetrically arranged on the front and rear sides directly below the pressure roller (601). A support roller (501) is rotatably connected to the upper surface of the support roller brackets (502). A second square perforation (504) is provided on the upper surface of the base (100) at the position of the support roller (501). A support roller motor (503) is connected to the lower surface of the support roller (501) within the second square perforation (504).

6. The welding device for the weld of a welded steel pipe according to claim 4, characterized in that, A magnetic conduction rod housing (706) is connected to the outside of the magnetic conduction rod (703). A water outlet groove (705) is provided on the periphery of the pressure roller motor (603). A water inlet perforation (707) is provided at the axis of the magnetic conduction rod (703). The water inlet perforation (707) communicates with the magnetic conduction rod installation pipe (702). The right end of the magnetic conduction rod installation pipe (702) communicates with the cooling water pipe (704).

7. A welding device for the weld seam of a welded steel pipe according to claim 1, characterized in that, The induction coil (402) is made of highly conductive copper.

8. The welding device for the weld seam of a welded steel pipe according to claim 1, characterized in that, The wire of the induction coil (402) has a hollow structure.

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