A metal smelting and rolling product welding apparatus

Abstract

The application relates to the technical field of welding equipment, in particular to a metal smelting and calendering product welding equipment which comprises a clamping and supporting mechanism, an inner supporting mechanism and a welding mechanism, the clamping and supporting mechanism is used for clamping and supporting a pipe, the inner supporting mechanism is used for positioning the pipe, the welding mechanism comprises a motor, an outer side welding part and an inner side welding part, the motor is arranged on a plate A, the output end of the motor is connected with a gear which is engaged with a toothed disc, the outer side welding part is arranged on a base, the inner side welding part comprises a laser generator, an optical fiber, an adjusting part, a deviation rectifying part, a protective tube, a beam splitter and a light transmission lens, the adjusting part is arranged on a disc and connected with the light transmission lens, the beam splitter is located below the light transmission lens and connected with the disc, the deviation rectifying part is arranged on the disc, the protective tube penetrates through the disc and a supporting tube, the optical fiber is arranged on the inner side of the protective tube and connected with the laser generator, the metal smelting and calendering product welding equipment can realize synchronous welding of inner and outer joints of the pipe, can preheat, reduce cooling stress and prevent cracks.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and specifically to a welding equipment for metal smelting and rolling products. Background Technology

[0002] Ferrous metal rolled products refer to various products such as plates and pipes made from iron, chromium, manganese and their alloys (mainly steel and pig iron) through rolling (i.e., rolling process).

[0003] Chinese patent CN223043919U discloses a welding device for ferrous metal smelting and rolling products. By driving a second motor, a second gear rotates on a rack, which in turn drives a sliding wheel on a sliding plate to make a circular motion on a sliding ring. At the same time, a second electric telescopic rod drives a first electric telescopic rod to extend and retract to the welding point of the metal pipe. Then, the first electric telescopic rod drives the welding head to contact the metal pipe, so that the welding head can directly complete the full welding work on all welding surfaces of the metal pipe without manual rotation.

[0004] However, the existing technology has the following drawbacks: it can only perform unidirectional welding on the pipe joint from the outside. For thick-walled pipes, the penetration depth can only be increased by simply increasing the laser output power to barely achieve penetration welding of the pipe wall joint. However, under thick-walled structures, relying solely on high power and strong penetration on the outside can easily lead to internal defects such as incomplete fusion, shrinkage cavities, and microcracks at the weld root. Excessive heat input will exacerbate welding residual stress and material hardening, reducing the overall mechanical properties of the joint. This results in poor weld formation quality on the inner wall, which is prone to leakage failure under long-term pressure and corrosion conditions. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a welding device for metal smelting and rolling products.

[0006] The technical solution of the present invention: a welding equipment for rolled metal products, comprising: The clamping and supporting mechanism includes a base, plate a, plate b, slide rail, gear plate, support tube, and telescopic component a; plate a and slide rail are mounted on the base; plate b is slidably connected to the slide rail; the support tube has two sets of components that are respectively connected to plate a and plate b; telescopic component a is mounted on the base and connected to plate b (telescopic component a includes, but is not limited to, devices such as cylinders); the gear plate is rotatably mounted on the outer surface of the support tube. The internal support mechanism has two sets of components that are respectively connected to plate a and plate b; the internal support mechanism includes a tube body, a drive unit, an internal support wheel, and a disc; the tube body is connected to the support tube; the disc has multiple circularly distributed sliding grooves; the internal support wheel is slidably connected to the sliding grooves; the drive unit is connected to the internal support wheel; The welding mechanism includes a motor, an outer welding section, and an inner welding section. The motor is mounted on plate a, and its output end is connected to a gear that meshes with a gear disk. The outer welding section is mounted on a base and is used to weld the outer joints between pipes. The inner welding section includes a laser generator, an optical fiber, an adjustment section, a correction section, a protective tube, a beam splitter, and a transmission mirror. The adjustment section is mounted on a disk and connected to the transmission mirror. The beam splitter is located below the transmission mirror and connected to the disk. The correction section is mounted on the disk. The protective tube passes through the disk and the support tube. The optical fiber is located inside the protective tube and connected to the laser generator.

[0007] Preferably, the base is equipped with a controller to control the orderly operation of various electrical devices.

[0008] Preferably, the drive unit includes a telescopic component d, a transition ring, and a rod a; the transition ring is slidably disposed inside the tube; one end of the rod a is rotatably connected to the inner support wheel, and the other end is rotatably connected to the transition ring; the telescopic component d is disposed on the inner wall of the support tube and is connected to the transition ring.

[0009] Preferably, the outer welding mechanism includes a vertical plate, a laser welding head, a telescopic component b, and a sliding seat; the vertical plate is disposed on the base; the sliding seat is slidably disposed on the top of the vertical plate; the laser welding head is connected to the sliding seat; and the telescopic component b is disposed on the top of the vertical plate and connected to the sliding seat.

[0010] Preferably, the adjustment unit includes a telescopic component f, a plate d, and a motor b; the telescopic component f is disposed on the disk and connected to the plate d; the light-transmitting mirror is inclined at a 45° angle and is rotatably connected to the plate d through a triangular block.

[0011] Preferably, the correction unit includes a telescopic component c, a plate c, and a laser pointer; the telescopic component c is disposed on the disk and connected to the plate c; the laser pointer is disposed on the plate c.

[0012] Preferably, the protective tube has an internal air pipe; one end of the air pipe is connected to a high-pressure gas tank for storing protective gas, and the other end of the air pipe points to the joint of the tube.

[0013] Preferably, a camera and a light are respectively installed on the two discs on both sides.

[0014] Compared with the prior art, the above-mentioned technical solution of the present invention has the following beneficial technical effects: The system incorporates a clamping and supporting mechanism, an internal support mechanism, and a welding mechanism. The clamping and supporting mechanism, in conjunction with the internal support mechanism, enables stable docking between pipes. The welding mechanism allows for simultaneous welding of the inner and outer joints between pipes, ensuring sufficient molten pool at the joints of thick-walled pipes and achieving full welding, thus guaranteeing weld quality. Furthermore, a beam splitter divides the laser beam into two beams, allowing one beam to preheat the joint before welding, thereby reducing cooling stress and preventing cracking. Attached Figure Description

[0015] Figure 1 This is a perspective view of the pipe welding process in one embodiment of the present invention; Figure 2 This is a perspective view of one embodiment of the present invention after the pipe has been removed; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the cross-sectional structure of the toothed disc, support tube, and tube body in one embodiment of the present invention. Figure 1 ; Figure 5 for Figure 4 Enlarged structural diagram at point B; Figure 6 This is a schematic diagram of the cross-sectional structure of the toothed disc, support tube, and tube body in one embodiment of the present invention. Figure 2 ; Figure 7 This is a schematic diagram of the connection structure between the drive unit and the inner support wheel in a cross-sectional state of the disc and the tube body according to one embodiment of the present invention.

[0016] Reference numerals: 1. Base; 2. Plate a; 3. Slide rail; 4. Plate b; 5. Controller; 6. Telescopic component a; 7. Motor; 8. Laser generator; 9. Gear disc; 10. Vertical plate; 11. Laser welding head; 12. Gear; 13. Disc; 14. Telescopic component b; 15. Rod a; 16. Adapter ring; 17. Inner support wheel; 18. Beam splitter; 19. Telescopic component c; 20. Plate c; 21. Fiber optic cable; 22. Laser pointer; 23. Air tube; 24. Camera; 25. Plate d; 26. Telescopic component f; 27. Lens; 28. Tube body; 29. ​​Support tube; 30. Telescopic component d; 31. Protective tube. Detailed Implementation

[0017] Example 1, as Figures 1-6 As shown, the present invention proposes a welding equipment for metal smelting and rolling products, which includes a clamping and supporting mechanism, an internal support mechanism, and a welding mechanism. The clamping support mechanism includes a base 1, plate a2, plate b4, slide rail 3, gear disc 9, support tube 29, and telescopic component a6; plate a2 and slide rail 3 are mounted on the base 1; plate b4 is slidably connected to slide rail 3; the support tube 29 has two sets of components that are respectively connected to plate a2 and plate b4; the telescopic component a6 is mounted on the base 1 and connected to plate b4; the gear disc 9 is rotatably mounted on the outer surface of the support tube 29; the base 1 is equipped with a controller 5 for controlling the orderly operation of various electrical devices (the controller 5 includes, but is not limited to, a PLC controller 5). The inner support mechanism has two sets connected to plates a2 and b4 respectively; the inner support mechanism includes a tube 28, a drive unit, an inner support wheel 17, and a disc 13; the tube 28 is connected to the support tube 29; the disc 13 has multiple circularly distributed sliding grooves; the inner support wheel 17 is slidably connected to the sliding grooves (the roller part of the inner support wheel 17 is supported by rubber material and there is a large friction between it and the inner wall of the tube); the drive unit is connected to the inner support wheel 17; the outer welding mechanism includes a vertical plate 10, a laser welding head 11, a telescopic component b14, and a sliding seat; the vertical plate 10 is set on the base 1; the sliding seat is slidably set on the top of the vertical plate 10; the laser welding head 11 is connected to the sliding seat; the telescopic component b14 is set on the top of the vertical plate 10 and connected to the sliding seat (the telescopic component b14 includes, but is not limited to, devices such as cylinders).

[0018] The welding mechanism includes a motor 7, an outer welding section, and an inner welding section. The motor 7 is mounted on plate a2, and its output end is connected to a gear 12 that meshes with a gear disk 9. The outer welding section is mounted on base 1 and is used to weld the outer joints between pipes. The inner welding section includes a laser generator 8, an optical fiber 21, an adjustment section, a correction section, a protective tube 31, a beam splitter 18, and a transmission lens 27 (all beam splitters 18 are set at a 45° angle). The adjustment section is mounted on disk 13 and connected to the transmission lens 27 (the transmission lens 27 is a fused silica lens, and its surface is provided with an anti-reflection coating and an anti-laser loss coating (e.g., The fluoride-based film material has the characteristics of low refractive index, low absorptivity, and good damage resistance. The beam splitter 18 is located below the lens 27 and connected to the disk 13. (The beam splitter 18 is made of a prism surface coated with a 1064nm high-power hard dielectric beam splitting film; the beam splitting film is a customized ratio beam splitting film, and the customized ratio can be 3:7, 4:6, or 5:5 according to actual needs.) The correction section is located on the disk 13. The protective tube 31 passes through the disk 13 and the support tube 29. The optical fiber 21 is located inside the protective tube 31 and connected to the laser generator 8. (The optical fiber 21 is a flexible optical fiber, and its end...) The system is equipped with a collimating lens to convert the diverging light output from fiber optic 21 into an axially parallel beam. The adjustment unit includes a telescopic component f26, a plate d25, and a motor 7b. The telescopic component f26 is mounted on the disk 13 and connected to the plate d25 (the telescopic component f26 includes, but is not limited to, devices such as cylinders). The light-transmitting lens 27 is tilted at a 45° angle and rotatably connected to the plate d25 via a triangular block. The correction unit includes a telescopic component c19, a plate c20, and a laser pointer 22. The telescopic component c19 is mounted on the disk 13 and connected to the plate c20 (the telescopic component c19 includes, but is not limited to, devices such as cylinders). The light pen 22 is mounted on the plate c20; the protective tube 31 has an air pipe 23 inside; one end of the air pipe 23 is connected to a high-pressure gas tank for storing protective gas (the air pipe 23 is used to transport protective gas to protect the laser welding process), and the other end of the air pipe 23 points to the joint of the pipe (the air pipe 23 points to the vicinity of the joint, and the welding joints of different pipes may have deviations, but they are all within the coverage of the protective gas); the discs 13 on both sides are respectively equipped with a camera 24 and a lighting lamp (the lighting lamp is used to provide a light source for the camera 24; the camera 24 is used to capture and transmit image information of the welding process).

[0019] In this embodiment, the pipes to be welded at both ends are respectively fitted onto the pipe bodies 28 on both sides and joined together. Then, the telescopic component a6 drives the plate b4 to move, and the plate b4 drives the toothed disc 9 on one side to move. The toothed disc 9 on the plate a2 cooperates with the pipes on both sides to achieve the joining function (at this time, the clamping force of the toothed disc 9 on the pipe ends is small, and the pipes and the toothed disc 9 can easily move relative to each other). Then, the drive unit causes the inner support wheel 17 to slide out of the groove to support the inner wall of the pipe, so that the axis of the pipe coincides with the axis of the pipe body 28, realizing the positioning function of the pipe. Then, the telescopic component is opened again. Part a6 increases the clamping force of the toothed disc 9 on the end of the pipe, ensuring that the toothed disc 9 can drive the pipe to rotate and that the pipes can be tightly connected. Then, the laser pointer 22 is turned on. The laser emitted by the laser pointer 22 is reflected by the light transmission lens 27 and then directed perpendicularly to the beam splitter 18. The beam splitter 18 splits the laser into two beams and illuminates the inner wall of the pipe. The camera 24 transmits the image information to the controller 5. The operator can observe the position of the laser point on the display on the controller 5. The telescopic component f26 moves the plate d25, which in turn moves the light transmission lens 27, changing the laser refraction point. Position the laser until the refraction point is located at the joint between the pipes; then turn off the laser pointer 22 and control the telescopic component c19 to move the plate c20 and the laser pointer 22, so that the plate c20 is misaligned with the optical fiber 21, allowing the laser transmitted by the optical fiber 21 to irradiate the light-transmitting plate; after debugging, use the telescopic component b14 to move the sliding seat, thereby fine-tuning the position of the laser welding head 11 so that it is aligned with the joint between the pipes; turn on the laser generator 8 and the laser welding head 11, and the laser generated by the laser generator 8 is transmitted through the optical fiber 21 and irradiates the light-transmitting plate after vertical reflection. On the beam splitter 18, part of the laser beam passes through and undergoes slight refraction and deflection before illuminating the joint, while the other part of the laser beam is refracted and tilted to illuminate the joint. The motor 7 is turned on, which drives the gear 12 to rotate, which in turn drives the gear disk 9 to rotate, and the gear disk 9 drives the pipe to rotate. The tilted laser can preheat the inner joint, and the laser passing through the beam splitter 18 can weld the inner joint. The laser welding head 11 can weld the outer joint, thereby realizing the function of simultaneous welding of the inner and outer joints and ensuring the welding quality of the thick-walled pipe joint.

[0020] For larger joints, controller 5 controls the telescopic components f26 and b14 to work. The telescopic component f26 drives the light-transmitting mirror 27 to move back and forth slightly (along the width direction of the inner joint) through plate d25, so that the laser beam moves back and forth at a high frequency at the position of the inner joint. At the same time, the telescopic component b14 can drive the laser welding head 11 to move back and forth at a high frequency (along the direction of the outer joint), which can effectively widen the heat action range, cover a larger weld gap, melt more base metal, fill the joint, and realize the bridging and forming function of large joints.

[0021] It is worth noting that, since the laser welding head 11 welds the outer seam from the top and the laser generator 8 welds the inner seam from the bottom, although the inner and outer seams of the pipe are welded synchronously, the welding points are not aligned.

[0022] Example 2, as Figure 7 As shown, the present invention proposes a welding equipment for metal smelting and rolling products. Compared with Embodiment 1, this embodiment also includes a drive unit structure. The drive unit includes a telescopic component d30 (the telescopic component d30 includes, but is not limited to, a cylinder or other device), a transition ring 16, and a rod a15. The transition ring 16 is slidably disposed inside the tube body 28. One end of the rod a15 is rotatably connected to the inner support wheel 17, and the other end is rotatably connected to the transition ring 16. The telescopic component d30 is disposed on the inner wall of the support tube 29 and connected to the transition ring 16.

[0023] In this embodiment, the telescopic component d30 is used to push the adapter ring 16 to move. The adapter ring 16 drives one end of the rod a15 to move, so that the other end of the rod a15 drives the inner support wheel 17 to move. This enables each inner support wheel 17 to move synchronously in all directions, thereby achieving the support and positioning function of the inner wall of the pipe, so that the axis of the pipe coincides with the axis of the pipe body 28.

[0024] It should be noted that the joints of the pipes were thoroughly cleaned before welding.

[0025] In summary, the pipes to be welded at both ends are respectively fitted onto the pipe bodies 28 on both sides and joined together. Then, the telescopic component a6 drives the plate b4 to move, and the plate b4 drives the toothed disc 9 on one side to move. This, in conjunction with the toothed disc 9 on the plate a2, achieves the joining function of the pipes on both sides (at this time, the clamping force of the toothed disc 9 on the pipe ends is relatively small). Then, the telescopic component d30 pushes the adapter ring 16 to move, and the adapter ring 16 drives one end of the rod a15 to move, so that the other end of the rod a15 drives the inner support wheel 17 to move. This achieves the synchronous movement of each inner support wheel 17 in all directions, thereby achieving the support and positioning function of the inner wall of the pipe, and ensuring the axis of the pipe is aligned. Aligning with the axis of the pipe body 28, the pipe is positioned. Then, the telescopic component a6 is activated again, increasing the clamping force of the toothed disc 9 on the pipe ends to ensure a tight connection between the pipes. Next, the laser pointer 22 is activated, and the laser emitted by it is reflected by the light-transmitting lens 27 and directed perpendicularly towards the beam splitter 18. The beam splitter 18 splits the laser into two beams, which then illuminate the inner wall of the pipe. The camera 24 transmits the image information to the controller 5, allowing the operator to observe the laser point position on the display. The telescopic component f26 moves the plate d25, which in turn moves the light-transmitting lens 27, changing the position of the laser refraction point. Position the laser until the refraction point is located at the joint between the pipes; then turn off the laser pointer 22 and control the telescopic component c19 to move the plate c20 and the laser pointer 22, so that the plate c20 is misaligned with the optical fiber 21, allowing the laser transmitted by the optical fiber 21 to irradiate the light-transmitting plate; after debugging, use the telescopic component b14 to move the sliding seat, thereby fine-tuning the position of the laser welding head 11 so that it is aligned with the joint between the pipes; turn on the laser generator 8 and the laser welding head 11, the laser generated by the laser generator 8 is transmitted through the optical fiber 21 and irradiates the light-transmitting plate, and after vertical reflection, it irradiates the beam splitter 18, the beam splitter 18 makes part of the laser... The laser beam passes through and undergoes slight refraction before illuminating the joint. Another portion of the laser beam is refracted and tilted to illuminate the joint. Motor 7 is activated, which drives gear 12 to rotate, which in turn drives gear disk 9 to rotate, and gear disk 9 drives the pipe to rotate. The tilted laser can preheat the inner joint, reducing cooling stress and preventing cracks. The laser beam passing through beam splitter 18 can weld the inner joint. The laser welding head 11 can weld the outer joint, achieving precision welding without dead angles inside narrow and sealed pipes. This solves the problem that traditional thick-walled pipes can only be welded from the outside, resulting in insufficient fusion of the inner wall and poor corrosion resistance of the weld.

[0026] When the controller 5 receives weld information and identifies a large joint, the controller 5 will control the telescopic components f26 and b14 to work. The telescopic component f26 drives the light-transmitting mirror 27 to move back and forth slightly (along the width direction of the inner joint) through the plate d25, so that the laser beam moves back and forth at a high frequency at the position of the inner joint. At the same time, the telescopic component b14 can drive the laser welding head 11 to move back and forth at a high frequency (along the direction of the outer joint), which can effectively widen the heat action range, cover a larger weld gap, melt more base metal, fill the joint, and realize the bridging and forming function of large joints.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A welding device for rolled metal products, characterized in that, include: The clamping support mechanism includes a base (1), plate a (2), plate b (4), slide rail (3), gear plate (9), support tube (29), and telescopic component a (6); plate a (2) and slide rail (3) are mounted on the base (1); plate b (4) is slidably connected to slide rail (3); the support tube (29) has two sets of components that are respectively connected to plate a (2) and plate b (4); the telescopic component a (6) is mounted on the base (1) and connected to plate b (4); the gear plate (9) is rotatably mounted on the outer surface of the support tube (29); The internal support mechanism has two sets of components that are respectively connected to plate a (2) and plate b (4); the internal support mechanism includes a tube body (28), a drive unit, an internal support wheel (17) and a disc (13); the tube body (28) is connected to the support tube (29); the disc (13) has multiple circularly distributed sliding grooves; the internal support wheel (17) is slidably connected to the sliding grooves; the drive unit is connected to the internal support wheel (17); The welding mechanism includes a motor (7), an outer welding section and an inner welding section; the motor (7) is mounted on plate a (2), and the output end of the motor (7) is connected to a gear (12) that meshes with the gear disk (9); the outer welding section is mounted on the base (1) for welding the outer joint between pipes; the inner welding section includes a laser generator (8), an optical fiber (21), an adjustment section, a correction section, a protective tube (31), a beam splitter (18) and a light transmission mirror (27); the adjustment section is mounted on the disk (13) and connected to the light transmission mirror (27); the beam splitter (18) is located below the light transmission mirror (27) and connected to the disk (13); the correction section is mounted on the disk (13); the protective tube (31) passes through the disk (13) and the support tube (29); the optical fiber (21) is mounted inside the protective tube (31) and connected to the laser generator (8).

2. The welding equipment for metal smelting and rolling products according to claim 1, characterized in that, The base (1) is equipped with a controller (5) for controlling the orderly operation of various electrical devices.

3. The welding equipment for metal smelting and rolling products according to claim 1, characterized in that, The drive unit includes a telescopic component d (30), a transition ring (16), and a rod a (15); the transition ring (16) is slidably disposed on the inner side of the tube body (28); one end of the rod a (15) is rotatably connected to the inner support wheel (17), and the other end is rotatably connected to the transition ring (16); the telescopic component d (30) is disposed on the inner wall of the support tube (29) and connected to the transition ring (16).

4. The welding equipment for metal smelting and rolling products according to claim 1, characterized in that, The outer welding mechanism includes a vertical plate (10), a laser welding head (11), a telescopic component b (14), and a sliding seat; the vertical plate (10) is mounted on the base (1); the sliding seat is slidably mounted on the top of the vertical plate (10); the laser welding head (11) is connected to the sliding seat; the telescopic component b (14) is mounted on the top of the vertical plate (10) and connected to the sliding seat.

5. The welding equipment for metal smelting and rolling products according to claim 1, characterized in that, The adjustment part includes a telescopic component f (26) and a plate d (25); the telescopic component f (26) is disposed on the disc (13) and connected to the plate d (25); the light-transmitting lens (27) is inclined at a 45° angle and connected to the plate d (25) through a triangular block.

6. The welding equipment for metal smelting and rolling products according to claim 1, characterized in that, The correction unit includes a telescopic component c (19), a plate c (20), and a laser pointer (22); the telescopic component c (19) is located on the disc (13) and connected to the plate c (20); the laser pointer (22) is located on the plate c (20).

7. The welding equipment for metal smelting and rolling products according to claim 1, characterized in that, The protective tube (31) is equipped with an air tube (23); one end of the air tube (23) is connected to a high-pressure gas tank used to store protective gas in the outside, and the other end of the air tube (23) points to the joint of the tube.

8. The welding equipment for metal smelting and rolling products according to claim 1, characterized in that, A camera (24) and a light are respectively installed on the discs (13) on both sides.

Images