Automatic adjusting device for submerged arc welding

Abstract

The utility model relates to the technical field of welding devices, and discloses an automatic adjusting device for submerged-arc welding, which comprises a frame, a wire reel rotatably arranged on the frame, and a flux box wire feeding mechanism and a welding head which are arranged on the frame, the wire feeding mechanism comprises a wire feeding frame, a main wire feeding roller, an auxiliary wire feeding roller and a driving motor, the main wire feeding roller and the auxiliary wire feeding roller are rotationally connected to the wire feeding frame, a transmission part is arranged between the main wire feeding roller and the auxiliary wire feeding roller, and the main wire feeding roller controls the auxiliary wire feeding roller to rotate through the transmission part. The wire feeding frame is further provided with a distance adjusting mechanism, and the distance adjusting mechanism controls the distance between the auxiliary wire feeding roller and the main wire feeding roller. And the distance between the two wire feeding rollers can be conveniently adjusted so as to adapt to conveying of welding wires with different thicknesses. The device has the effects of adjusting the distance between the welding wire rollers and being wide in application range.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to an automatic adjustment device for submerged arc welding. Background Technology

[0002] Submerged arc welding (including submerged arc surfacing and electroslag surfacing) is a welding method in which an electric arc burns under a layer of flux. Its inherent advantages, such as stable weld quality, high welding productivity, and minimal arc light and fumes, make it a primary welding method in the fabrication of important steel structures such as pressure vessels, pipe sections, and box girder columns. In recent years, although many new, efficient, and high-quality welding methods have emerged, the application of submerged arc welding has remained unaffected. From the perspective of the proportion of deposited metal weight among various fusion welding methods, submerged arc welding accounts for approximately 10%, and this proportion has remained relatively stable over the years. In automatic submerged arc welding, the processes of arc ignition, wire feeding, arc movement along the welding direction, and welding termination are all completed mechanically. The roles of the welding wire and flux during welding are the same as those of the electrode core and electrode coating in manual arc welding. Different welding wires and fluxes with different compositions should be selected for welding different materials. For example, H08A welding wire is commonly used when welding low-carbon steel, paired with high-manganese, high-silicon flux such as HJ431. Welding power supplies typically use large-capacity arc welding transformers.

[0003] Chinese utility model patent CN211192440U discloses an automatic adjustment device for submerged arc welding, including a submerged arc welding system, an image acquisition system, a control system, and an automatic adjustment system. The submerged arc welding system, image acquisition system, and automatic adjustment system are all electrically connected to the control system. The submerged arc welding system includes a submerged arc welding head and a welding torch positioned below the welding head. The image acquisition system includes a camera positioned around the welding torch. The automatic adjustment system includes a lifting adjustment mechanism that drives the submerged arc welding head up and down, a translation adjustment mechanism that drives the submerged arc welding head laterally, and a rotation adjustment mechanism that drives the submerged arc welding head to rotate. Although this device can adjust the welding head in all directions, its practical application is limited. It cannot weld different materials because welding different materials requires different compositions of welding wire and flux, and the thickness of the welding wire also varies. Therefore, the wire feeding mechanism needs to be improved to adapt to welding wires of different thicknesses. Utility Model Content

[0004] The purpose of this invention is to provide an automatic adjustment device for submerged arc welding, which has the effect of adjusting the spacing of welding wire rollers and has a wide range of applications.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an automatic adjustment device for submerged arc welding, comprising a frame, a wire spool rotatably mounted on the frame, a flux box wire feeding mechanism mounted on the frame, and a welding head. The wire feeding mechanism includes a wire feeding frame, a main wire feeding roller and an auxiliary wire feeding roller rotatably connected to the wire feeding frame, and a drive motor for driving the main wire feeding roller to rotate. A transmission component is provided between the main wire feeding roller and the auxiliary wire feeding roller, and the main wire feeding roller controls the rotation of the auxiliary wire feeding roller through the transmission component. An adjustment mechanism is also provided on the wire feeding frame, and the adjustment mechanism controls the distance between the auxiliary wire feeding roller and the main wire feeding roller.

[0006] By adopting the above technical solution, the distance between the two wire feeding rollers can be easily adjusted to accommodate the feeding of welding wires of different thicknesses.

[0007] A further configuration of this utility model is as follows: the transmission component includes a transmission frame, a main shaft, a main gear, a transmission shaft, a transmission gear, a secondary shaft, and a secondary gear. The transmission frame is fixedly connected to the wire feeding frame. The main shaft is coaxially fixedly connected to the end of the main wire feeding roller and rotatably connected to the transmission frame. The end of the main shaft is coaxially fixedly connected to the output end of the drive motor. The secondary shaft is coaxially fixedly connected to the end of the secondary wire feeding roller and movably connected to the transmission frame. The transmission shaft is rotatably connected to the transmission frame. The transmission gear is coaxially fixedly connected to the transmission shaft. Both the main gear and the secondary gear mesh with the transmission gear.

[0008] By adopting the above technical solution, the drive motor drives the main wire feeding roller to rotate through the main shaft. The main shaft is connected to the main gear, which controls the rotation of the auxiliary gear through the transmission gear, so as to realize the rotation of the main wire feeding roller and the auxiliary wire feeding roller to feed the welding wire. When the distance adjustment mechanism adjusts the distance between the auxiliary wire feeding roller and the main wire feeding roller, the auxiliary gear at the end of the auxiliary wire feeding roller will move along the transmission gear to achieve the change of distance but still be able to transmit.

[0009] A further feature of this invention is that the adjusting mechanism includes an adjusting rod, a limiting rod, an adjusting block, and a movable component. The limiting rod is fixedly connected to the transmission frame and is arranged parallel to the secondary shaft. The adjusting block is coaxially rotatably connected to the secondary shaft. The adjusting rod has an external thread that passes through the limiting rod. The end of the adjusting rod is fixedly connected to the adjusting block. Both ends of the secondary shaft are movably connected to the transmission frame via the movable component.

[0010] A further feature of this invention is that the movable component includes a movable block, the transmission frame has a guide hole, the movable block is slidably connected in the guide hole, and the secondary shaft is rotatably connected in the guide hole.

[0011] A further feature of this invention is that two guide holes are provided, and two movable blocks are provided, with the two movable blocks respectively slidably connected within the guide holes.

[0012] A further feature of this invention is that the guide hole is an arc-shaped guide hole.

[0013] By adopting the above technical solution, the adjusting rod is rotated. The adjusting rod and the limiting rod are connected by a thread, so the position of the limiting rod is fixed. Therefore, the adjusting rod will move forward or backward. The end of the adjusting rod is connected to the secondary shaft through the adjusting block, so as to drive the secondary shaft to move, thereby realizing the process of the secondary wire feeding roller moving closer to or away from the main wire feeding roller. During its movement, the movable block will play a guiding role, so that the secondary gear and the main gear can always maintain a meshing state.

[0014] A further feature of this invention is that the transmission frame is provided with a strip-shaped hole, the movable block is provided with a limiting screw hole, a bolt is movably inserted into the strip-shaped hole, and the bolt passes through the strip-shaped hole and connects to the limiting screw hole.

[0015] A further feature of this invention is that a handwheel is provided at the end of the adjusting rod away from the adjusting block.

[0016] The beneficial effects of this utility model are: This utility model can conveniently adjust the distance between the two wire feeding rollers to accommodate welding wires of different thicknesses for conveying. The drive motor drives the main wire feeding roller to rotate through the main shaft. The main shaft is connected to a main gear, which controls the rotation of the auxiliary gear through the transmission gear, thereby realizing the rotation of the main wire feeding roller and the auxiliary wire feeding roller to convey the welding wire. When the distance adjustment mechanism adjusts the distance between the auxiliary wire feeding roller and the main wire feeding roller, the auxiliary gear at the end of the auxiliary wire feeding roller will move along the transmission gear to achieve distance changes while still enabling transmission. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this embodiment.

[0019] Figure 2 This is a schematic diagram of the wire feeding mechanism in this embodiment.

[0020] Figure 3 This is a schematic diagram of the transmission component structure in this embodiment.

[0021] Figure 4 This is a schematic diagram of the transmission component and the adjusting mechanism in this embodiment.

[0022] In the diagram, 1. Frame; 11. Wire spool; 12. Flux box; 13. Welding head; 2. Wire feeding mechanism; 21. Wire feeding frame; 22. Main wire feeding roller; 23. Auxiliary wire feeding roller; 24. Drive motor; 3. Transmission components; 31. Transmission frame; 311. Guide hole; 312. Strip hole; 313. Bolt; 32. Main shaft; 33. Main gear; 34. Transmission shaft; 35. Transmission gear; 36. Countershaft; 37. Countergear; 4. Adjustment mechanism; 41. Adjusting rod; 411. External thread; 412. Handwheel; 42. Limiting rod; 43. Adjusting block; 44. Movable block. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] Examples, such as Figure 1-4 As shown, an automatic adjustment device for submerged arc welding includes a frame 1, a wire spool 11 rotatably mounted on the frame 1, a flux box 12 mounted on the frame 1, a wire feeding mechanism 2, and a welding head 13. The wire feeding mechanism 2 includes a wire feeding frame 21, a main wire feeding roller 22 and an auxiliary wire feeding roller 23 rotatably connected to the wire feeding frame 21, and a drive motor 24 for driving the main wire feeding roller 22. A transmission component 3 is provided between the main wire feeding roller 22 and the auxiliary wire feeding roller 23, and the main wire feeding roller 22 controls the rotation of the auxiliary wire feeding roller 23 through the transmission component 3. A distance adjustment mechanism 4 is also provided on the wire feeding frame 21, which controls the distance between the auxiliary wire feeding roller 23 and the main wire feeding roller 22. This allows for convenient adjustment of the distance between the two wire feeding rollers to accommodate the feeding of welding wires of different thicknesses.

[0025] The transmission component 3 includes a transmission frame 31, a main shaft 32, a main gear 33, a transmission shaft 34, a transmission gear 35, a secondary shaft 36, and a secondary gear 37. The transmission frame 31 is fixedly connected to the wire feeding frame 21. The main shaft 32 is coaxially fixedly connected to the end of the main wire feeding roller 22 and rotatably connected to the transmission frame 31. The end of the main shaft 32 is coaxially fixedly connected to the output end of the drive motor 24. The secondary shaft 36 is coaxially fixedly connected to the end of the secondary wire feeding roller 23 and movably connected to the transmission frame 31. The transmission shaft 34 is rotatably connected to the transmission frame 31. The transmission gear 35 is coaxially fixedly connected to the transmission shaft 34. The main gear 33 and the secondary gear 37 both mesh with the transmission gear 35. The drive motor 24 drives the main wire feeding roller 22 to rotate through the main shaft 32. The main shaft 32 is connected to the main gear 33. The main gear 33 controls the rotation of the auxiliary gear 37 through the transmission gear 35, so as to realize the rotation of the main wire feeding roller 22 and the auxiliary wire feeding roller 23 to feed the welding wire. When the distance adjustment mechanism 4 adjusts the distance between the auxiliary wire feeding roller 23 and the main wire feeding roller 22, the auxiliary gear 37 at the end of the auxiliary wire feeding roller 23 will move along the transmission gear 35 to achieve the change of distance but still be able to transmit.

[0026] The adjusting mechanism 4 includes an adjusting rod 41, a limiting rod 42, an adjusting block 43, and a movable component. The limiting rod 42 is fixedly connected to the transmission frame 31 and is arranged parallel to the secondary shaft 36. The adjusting block 43 is coaxially rotatably connected to the secondary shaft 36. The adjusting rod 41 is provided with an external thread 411, and the thread of the adjusting rod 41 passes through the limiting rod 42. The end of the adjusting rod 41 is fixedly connected to the adjusting block 43. The two ends of the secondary shaft 36 are movably connected to the transmission frame 31 through the movable component.

[0027] The movable component includes a movable block 44, and a guide hole 311 is provided on the transmission frame 31. The movable block 44 is slidably connected in the guide hole 311, and the secondary shaft 36 is rotatably connected in the guide hole 311.

[0028] Two guide holes 311 are provided, and two movable blocks 44 are provided, with the two movable blocks 44 slidably connected in the guide holes 311 respectively.

[0029] The guide hole 311 is an arc-shaped guide hole 311.

[0030] By adopting the above technical solution, the adjusting rod 41 is rotated. The adjusting rod 41 and the limiting rod 42 are threadedly connected, so the position of the limiting rod 42 is fixed. Therefore, the adjusting rod 41 will move forward or backward. The end of the adjusting rod 41 is connected to the secondary shaft 36 through the adjusting block 43, so it will drive the secondary shaft 36 to move, thereby realizing the process of the secondary wire feeding roller 23 moving closer to or away from the main wire feeding roller 22. During its movement, the movable block 44 will play a guiding role, so that the secondary gear 37 and the main gear 33 can always maintain a meshing state.

[0031] The transmission frame 31 is also provided with a strip-shaped hole 312, and the movable block 44 is provided with a limit screw hole. A bolt 313 is movably inserted into the strip-shaped hole 312, and the bolt 313 passes through the strip-shaped hole 312 and is connected to the limit screw hole.

[0032] A handwheel 412 is provided at the end of the adjusting rod 41 away from the adjusting block 43.

[0033] This invention allows for easy adjustment of the distance between the two wire feeding rollers to accommodate welding wires of different thicknesses. The drive motor 24 drives the main wire feeding roller 22 to rotate via the main shaft 32. The main shaft 32 is connected to a main gear 33, which controls the rotation of the auxiliary gear 37 via a transmission gear 35, thereby enabling the rotation of the main wire feeding roller 22 and the auxiliary wire feeding roller 23 to feed the welding wire. When the distance adjustment mechanism 4 adjusts the distance between the auxiliary wire feeding roller 23 and the main wire feeding roller 22, the auxiliary gear 37 at the end of the auxiliary wire feeding roller 23 will move along the transmission gear 35 to achieve distance changes while still enabling transmission.

Claims

1. An automatic adjustment device for submerged arc welding, comprising a frame (1), a wire spool (11) rotatably mounted on the frame (1), a flux box (12) mounted on the frame (1), a wire feeding mechanism (2), and a welding head (13), characterized in that: The wire feeding mechanism (2) includes a wire feeding frame (21), a main wire feeding roller (22) and an auxiliary wire feeding roller (23) rotatably connected to the wire feeding frame (21), and a drive motor (24) for driving the main wire feeding roller (22) to rotate. A transmission component (3) is provided between the main wire feeding roller (22) and the auxiliary wire feeding roller (23). The main wire feeding roller (22) controls the rotation of the auxiliary wire feeding roller (23) through the transmission component (3). An adjustment mechanism (4) is also provided on the wire feeding frame (21). The adjustment mechanism (4) controls the distance between the auxiliary wire feeding roller (23) and the main wire feeding roller (22).

2. The automatic adjustment device for submerged arc welding according to claim 1, characterized in that: The transmission component (3) includes a transmission frame (31), a main shaft (32), a main gear (33), a transmission shaft (34), a transmission gear (35), a secondary shaft (36), and a secondary gear (37). The transmission frame (31) is fixedly connected to the wire feeder (21). The main shaft (32) is coaxially fixedly connected to the end of the main wire feeder (22) and rotatably connected to the transmission frame (31). The end of the main shaft (32) is coaxially fixedly connected to the output end of the drive motor (24). The secondary shaft (36) is coaxially fixedly connected to the end of the secondary wire feeder (23) and movably connected to the transmission frame (31). The transmission shaft (34) is rotatably connected to the transmission frame (31). The transmission gear (35) is coaxially fixedly connected to the transmission shaft (34). The main gear (33) and the secondary gear (37) both mesh with the transmission gear (35).

3. The automatic adjustment device for submerged arc welding according to claim 2, characterized in that: The adjusting mechanism (4) includes an adjusting rod (41), a limiting rod (42), an adjusting block (43), and a movable component. The limiting rod (42) is fixedly connected to the transmission frame (31) and is arranged parallel to the secondary shaft (36). The adjusting block (43) is coaxially rotatably connected to the secondary shaft (36). The adjusting rod (41) is provided with an external thread (411). The thread of the adjusting rod (41) passes through the limiting rod (42). The end of the adjusting rod (41) is fixedly connected to the adjusting block (43). The two ends of the secondary shaft (36) are movably connected to the transmission frame (31) through the movable component.

4. The automatic adjustment device for submerged arc welding according to claim 3, characterized in that: The movable component includes a movable block (44), and a guide hole (311) is provided on the transmission frame (31). The movable block (44) is slidably connected in the guide hole (311), and the secondary shaft (36) is rotatably connected in the guide hole (311).

5. The automatic adjustment device for submerged arc welding according to claim 4, characterized in that: Two guide holes (311) are provided, and two movable blocks (44) are provided, with the two movable blocks (44) slidably connected in the guide holes (311) respectively.

6. The automatic adjustment device for submerged arc welding according to claim 4, characterized in that: The guide hole (311) is an arc-shaped guide hole (311).

7. The automatic adjustment device for submerged arc welding according to claim 4, characterized in that: The transmission frame (31) is also provided with a strip hole (312), and the movable block (44) is provided with a limit screw hole. A bolt (313) is movably inserted into the strip hole (312), and the bolt (313) passes through the strip hole (312) and is connected to the limit screw hole.

8. The automatic adjustment device for submerged arc welding according to claim 7, characterized in that: A handwheel (412) is provided at the end of the adjusting rod (41) away from the adjusting block (43).

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