Welding device and welding method for loader bucket production

Abstract

The invention relates to the technical field of bucket welding, in particular to a welding device and a welding method for loader bucket production. Comprising a support, a base is arranged at the top of the support, an upper cover is movably connected to the base, a power mechanism is arranged on the support, a welding manipulator is arranged on the power mechanism, and the power mechanism is used for driving the welding manipulator to move to conduct welding operation and controlling the upper cover to rotate to clamp a bucket. And a clamping and fixing mechanism is arranged between the base and the upper cover. Through the arranged clamping and fixing mechanism, the handle can be rotated to drive the upper clamping plate and the lower clamping plate to move, the upper clamping plate makes contact with the outer side of the upper cover, the lower clamping plate makes contact with the outer side of the base and the outer side of the main blade plate, the distance between the upper clamping plate and the lower clamping plate can be adjusted, and the butt joint gap between the main blade plate and the bottom plate is shortened; the welding workload and the welding heat input quantity are reduced, and the situation that welding deformation is generated due to deformation of the main blade plate, and consequently the welding quality is low is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of bucket welding, and in particular to a welding device and a welding method for producing a loader bucket. Background Art

[0002] A loader is a type of earthmoving machinery widely used in construction projects such as highways, railways, buildings, hydropower stations, ports, and mines. It is primarily used for loading bulk materials such as soil, sand, gravel, lime, and coal, and can also perform light excavation of ore and hard soil. By equipping it with various auxiliary devices, it can also perform bulldozing, lifting, and loading and unloading of other materials such as wood.

[0003] A loader is a loading machine with a bucket as its core working mechanism. It uses the bucket to scoop, lift, and unload materials. Buckets are structural components, consisting of a tooth adapter plate, base plate, side plates, wall panels, lug plates, back plate, main blade plate, bucket lug plates, bucket lug sleeves, bucket teeth, tooth adapters, and guard plates or bucket angles. Therefore, welding is the most critical manufacturing process for buckets, and welding quality directly affects the bucket's structural strength and service life.

[0004] The main blade of a bucket is a fabricated part obtained by outsourcing after gas cutting of plate material. Due to factors such as plate loading, unloading, transportation, and storage, the main blade can experience arching, collapse, and deflection. This deflection increases the gap between the main blade and the bucket floor and side panels, making them uneven. This increased gap increases welding workload and heat input, while the uneven gap leads to uneven heat input, resulting in uneven post-weld cooling shrinkage. Consequently, cooling of each weld causes corresponding deformation in the bucket floor, side panels, and main blade, affecting the bucket's weld quality. Summary of the Invention

[0005] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a welding device and a welding method for producing a loader bucket.

[0006] Technical solution: A welding device and welding method for loader bucket production, comprising a bracket, a base provided on the top of the bracket, an upper cover movably connected to the base, a power mechanism provided on the bracket, a welding manipulator provided on the power mechanism, the power mechanism being used to drive the welding manipulator to move for welding operations and control the rotation of the upper cover to clamp the bucket, a clamping and fixing mechanism being provided between the base and the upper cover, the clamping and fixing mechanism being used to clamp and flatten the bending position of the main blade plate, thereby reducing the curvature of the main blade plate and facilitating welding operations on the main blade plate.

[0007] Furthermore, the clamping and fixing mechanism includes a clamping unit, which includes an upper clamping plate, which is movably connected to the upper cover, and a lower clamping plate movably connected to the base, and a handle is threadedly connected between the lower clamping plate and the upper clamping plate, and the handle is used to adjust the distance between the upper clamping plate and the lower clamping plate, so as to facilitate appropriate adjustment according to different buckets. A tightening unit is provided in the handle, and the tightening unit is used to tighten the main blade plate to facilitate welding of the main blade plate.

[0008] Furthermore, the tightening unit includes an upper top plate movably connected to the upper clamping plate, a lower top plate movably connected to the lower clamping plate, first racks are provided at opposite ends of the upper top plate and the lower top plate, the two first racks are arranged opposite to each other, a first gear is meshed and connected between the two first racks, a rotating rod is provided in the first gear, the rotating rod is fixedly connected to the handle, an anti-loosening unit is provided in the rotating rod, and the anti-loosening unit is used to fix the position of the first gear to prevent the first gear from reversing and affecting the clamping effect on the main blade plate.

[0009] Furthermore, the anti-loosening unit includes a rotating groove opened in the rotating rod, a movable groove opened in the rotating rod, a ratchet bar movably connected in the movable groove, a plurality of ratchet grooves opened on the first gear, the ratchet groove is connected to the movable groove, a tension spring is provided between the ratchet bar and the movable groove, a rotating rod movably connected in the rotating rod, an end of the rotating rod away from the rotating rod is fixedly connected to a handle, the handle is located on the outside of the handle, a rotating block is provided at the other end of the rotating rod, the rotating block is movably connected to the rotating groove, a push plate is provided on the rotating rod, the push plate is located in the movable groove, and the push plate is in contact with the ratchet bar.

[0010] Furthermore, the power mechanism includes a dual-axis motor arranged on a bracket, one end of the dual-axis motor is provided with a reciprocating screw rod movably connected to the bracket, a sliding rod is connected to the bracket, a slider is movably connected to the reciprocating screw rod, the slider is movably connected to the sliding rod, the slider is connected to the welding robot, and the other end of the dual-axis motor is provided with a driving unit, and the driving unit is used to drive the upper cover to rotate and clamp the bucket.

[0011] Furthermore, the driving unit includes a rotating shaft connected to the bracket, the rotating shaft is connected to the base, and driving gears are provided at both ends of the rotating shaft. A driving shaft is provided between the base and the upper cover, and passive gears are provided at both ends of the driving shaft. The driving gear is meshed with the passive gear, and a transmission belt is connected to one end of the rotating shaft and the other end of the dual-axis motor.

[0012] Furthermore, the bracket is provided with a second rack located on one side of the reciprocating screw, and a gear shaft is movably connected to one side of the slider. A second gear is provided on the gear shaft, and the second gear is engaged with the second rack. A spring is provided at one end of the gear shaft, and a hitting ball is provided at the other end of the spring.

[0013] Furthermore, a plurality of upper hooks are provided on one side of the upper cover, a pad is movably connected in the base, a plurality of lower hooks are provided on one side of the pad, a pull rope is provided on the side of the pad away from the lower hooks, one end of the pull rope passes through the base and is connected to the rotating shaft.

[0014] Furthermore, a support plate is provided on the bracket, and the support plate is located below the base.

[0015] A welding method for a welding device for producing a loader bucket, the welding method comprising the following steps: S1. Spray: First, use the hoisting equipment to place the bucket on the base, and then spray the area near the welding position on the bucket with welding anti-spatter agent to reduce the fusion of welding spatter and bucket during welding, making it easier to clean welding spatter; S2. Clamping: Start the dual-axis motor, which controls the upper cover to rotate so that the upper cover and the base cooperate to clamp the bucket. At the same time, the deformed position of the main blade plate is fixed by the clamping and fixing mechanism, so that the joint gap between the main blade plate and the bottom plate and side plates is shortened and uniformed, reducing the welding workload and welding heat input, and reducing welding deformation. S3. Welding: Start the dual-axis motor, which drives the reciprocating screw to rotate. The reciprocating screw drives the slider and the welding manipulator to move. The welding manipulator moves and welds the bucket. Welding is performed in a segmented manner, such as jump welding or symmetrical welding, in the order of inside first and outside later, to reduce heat input and prevent welding deformation during the welding process. S4, knocking: The slider drives the welding manipulator to move during welding. Under the action of the second rack, the second gear rotates, which in turn drives the spring and the striking ball to rotate. The striking ball knocks the bottom of the main blade during the rotation process to eliminate welding stress and avoid cracking caused by residual stress. S5. Wipe: Use a rag or other cleaning tools to clean the welding spatter generated during the welding process in the bucket to ensure that the surface of the bucket is clean after welding.

[0016] Compared with the prior art, the present invention has the following advantages: 1. The clamping and fixing mechanism provided in the present invention can realize that the upper clamping plate and the lower clamping plate are driven to move by rotating the handle, so that the upper clamping plate contacts the outer side of the upper cover, and the lower clamping plate contacts the outer side of the base and the outer side of the main blade plate, so that the distance between the upper clamping plate and the lower clamping plate can be adjusted, and the butt gap between the main blade plate and the bottom plate can be reduced, thereby reducing the welding workload and welding heat input. The uniform gap makes the welding heat input uniform, reducing the welding deformation caused by the deformation of the main blade plate, resulting in low welding quality; at the same time, rotating the rotating rod can control the first gear to drive the two first racks to move away from each other, and then drive the upper top plate and the lower top plate to move away, so that the deformed position of the main blade plate can be clamped by the lower top plate and the lower clamping plate; 2. The present invention is capable of realizing a dual-axis motor driving a welding manipulator to perform welding operations through the power mechanism provided; at the same time, the dual-axis motor drives the transmission belt to rotate, thereby driving the rotating shaft and the driving gear to rotate, and the driven gear rotates accordingly. The driven gear drives the upper cover to rotate through the drive shaft, thereby clamping the bucket; 3. The present invention provides an upper hook and a lower hook, so that the upper hook can limit the upper end of the bucket. At the same time, the pull rope will pull the pad inward, and the main blade plate will be squeezed inward by the lower hook, so that the distance between the main blade plate and the bottom plate is reduced, which is convenient for welding the main blade plate and the bottom plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention with a bucket; Figure 3 It is a rear perspective structural diagram of the present invention; Figure 4 It is a schematic diagram of the exploded structure of the clamping and fixing mechanism of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the first gear of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the welding robot of the present invention; Figure 7 This is a schematic diagram of a first cross-sectional structure of the first gear of the present invention; Figure 8 This is a schematic diagram of a second cross-sectional structure of the first gear of the present invention; Figure 9 It is a schematic cross-sectional view of the ratchet bar and the ratchet groove of the present invention when they are separated; Figure 10 Schematic diagram of the cross-sectional structure of the ratchet bar and the ratchet groove of the present invention; Figure 11 It is a schematic diagram of a partial three-dimensional structure of the rotating rod of the present invention; Figure 12It is a partial three-dimensional structural schematic diagram of the draw cord of the present invention.

[0018] The numbers in the figure are: 1. bracket, 2. base, 3. upper cover, 4. welding manipulator, 5. upper splint, 6. lower splint, 7. handle, 8. upper top plate, 9. lower top plate, 10. first rack, 11. first gear, 12. rotating rod, 13. rotating groove, 14. movable groove, 15. ratchet bar, 16. ratchet groove, 17. tension spring, 18. rotating rod, 181. handle, 19. rotating block, 20. push plate, 21. dual-axis motor, 22. reciprocating screw, 23. sliding rod, 24. slider, 25. driving gear, 26. driven gear, 27. rotating shaft, 28. transmission belt, 29. second rack, 30. second gear, 301. gear shaft, 31. spring, 32. hitting ball, 33. upper hook, 34. lower hook, 35. pull rope, 36. pad, 37. support plate. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example 1 A welding device and welding method for producing a loader bucket, such as Figure 1-12As shown, it includes a bracket 1, the top of the bracket 1 is fixedly connected to a base 2, the base 2 is rotatably connected to an upper cover 3, the bracket 1 is provided with a power mechanism, the power mechanism is provided with a welding manipulator 4, the power mechanism is used to drive the welding manipulator 4 to move for welding operations and control the upper cover 3 to rotate to clamp the bucket, a clamping and fixing mechanism is provided between the base 2 and the upper cover 3, the clamping and fixing mechanism is used to clamp and flatten the bending position of the main blade plate, reduce the bending degree of the main blade plate, and facilitate the welding operation of the main blade plate; when working, the worker first puts the bucket to be welded on the base 2, and then starts the power mechanism, which first drives the upper cover 3 to move closer to the base 2, and then performs the welding on the bottom plate and side plate of the bucket. The two ends of the main blade plate are fixed by the side plates, and the deformed position of the main blade plate is clamped and fixed to the bottom plate by the clamping and fixing mechanism, thereby reducing the butt gap between the main blade plate and the bottom plate, reducing the welding workload and welding heat input, and the uniform gap makes the welding heat input uniform, reducing the welding deformation caused by the deformation of the main blade plate, resulting in low welding quality, and then welding the connection position of the main blade plate with the bottom plate and side plates. During welding, the welding is performed in the order of inside first and outside later by jump welding or symmetrical welding to reduce heat input and prevent welding deformation during welding.

[0021] In one embodiment, the clamping and fixing mechanism includes a clamping unit, which includes an upper clamping plate 5, which is in contact with the upper cover 3, and a lower clamping plate 6 is in contact with the base 2. A handle 7 is threadedly connected between the lower clamping plate 6 and the upper clamping plate 5, and the handle 7 is used to adjust the distance between the upper clamping plate 5 and the lower clamping plate 6 to facilitate appropriate adjustment according to different buckets. A tightening unit is provided in the handle 7, and the tightening unit is used to tighten the main blade plate to facilitate welding of the main blade plate. The handle 7 is divided into three parts: upper, middle and lower. The upper and lower parts of the handle 7 are rotatably connected to the middle part. The upper and lower parts of the handle 7 are respectively connected to the upper splint 5 and the lower splint 6 by threads. When working, the worker adjusts the distance between the upper splint 5 and the lower splint 6 according to the volume of different buckets. When adjusting, the worker rotates the upper and lower parts of the handle 7, and the handle 7 drives the upper splint 5 and the lower splint 6 to move, so that the upper splint 5 contacts the outer side of the upper cover 3, and the lower splint 6 contacts the outer side of the base 2 and the outer side of the main blade. The distance between the upper splint 5 and the lower splint 6 can be adjusted to meet the clamping needs of different buckets.

[0022] In one embodiment, the tightening unit includes an upper top plate 8 slidably connected to the upper splint 5, a lower top plate 9 is slidably connected to the lower splint 6, and the opposite ends of the upper top plate 8 and the lower top plate 9 are fixedly connected to a first rack 10, the two first racks 10 are arranged opposite to each other, and a first gear 11 is meshed and connected between the two first racks 10, a rotating rod 12 is fixedly connected to the first gear 11, and both ends of the rotating rod 12 are fixedly connected to the middle of the handle 7, and an anti-loosening unit is provided in the rotating rod 12, and the anti-loosening unit is used to fix the position of the first gear 11. The first gear 11 is arranged to prevent the first gear 11 from reversing and affecting the clamping effect of the main blade plate; when working, the worker rotates the anti-loosening unit, and the anti-loosening unit drives the first gear 11 to rotate, and the first gear 11 drives the two first racks 10 to move away from each other, and then drives the upper top plate 8 and the lower top plate 9 to move away from each other, so that the upper top plate 8 is in contact with the inner side of the upper cover 3, and the lower top plate 9 is in contact with the inner side of the base 2 and the inner side of the main blade plate, and then the deformed position of the main blade plate is clamped through the lower top plate 9 and the lower clamping plate 6, so as to correct the deformation of the main blade plate, facilitate the welding of the main blade plate and improve the welding quality of the bucket.

[0023] In one embodiment, the anti-loosening unit includes a rotating groove 13 provided in the rotating rod 12, a movable groove 14 is provided in the rotating rod 12, a ratchet bar 15 is rotatably connected in the movable groove 14, a plurality of ratchet grooves 16 are provided on the first gear 11, the ratchet groove 16 is communicated with the movable groove 14, a tension spring 17 is fixedly connected between the ratchet bar 15 and the movable groove 14, a rotating rod 18 is rotatably connected in the rotating rod 12, the end of the rotating rod 18 passes through the handle 7, and two rotating blocks 19 located in the rotating rod 12 are fixedly connected to the rotating rod 18, the rotating block 19 is slidably connected to the rotating groove 13, and the rotating rod 1 8 is fixedly connected with a push plate 20, and the push plate 20 is located in the movable groove 14. The push plate 20 contacts the ratchet bar 15. The end of the rotating rod 18 away from the rotating rod 12 is fixedly connected with a handle 181, and the handle 181 is located on the outside of the handle 7. When working, the worker rotates the rotating rod 18 through the handle, and the rotating rod 18 drives the rotating block 19 and the push plate 20 to rotate. The push plate 20 pushes the ratchet bar 15 to move, and the ratchet bar 15 moves outward, and the tension spring 17 is stretched. When the push plate 20 is rotated into place, the ratchet bar 15 extends into place, and the ratchet bar 15 is located in the ratchet groove 16. As the rotating rod 18 continues to rotate, the ratchet bar 15 will drive the second A gear 11 rotates, thereby driving the first rack 10 to move, thereby clamping the deformed position of the main blade plate. Workers can set multiple clamping and fixing mechanisms according to the deformation of the main blade plate, so as to achieve the purpose of correcting the deformation of the main blade plate. The upper and lower sides of the rotating groove 13 are fixedly connected with protrusions, and the upper and lower sides of the rotating block 19 are provided with grooves, and the protrusions correspond to the grooves. After the rotating block 19 is rotated into place, the protrusions in the rotating groove 13 cooperate with the grooves on the rotating block 19 to clamp the rotating block 19, fixing the position of the rotating block 19, and the ratchet bar 15 and the ratchet groove 16 can prevent the first gear 11 from reversing when the rotating rod 12 stops rotating. The first gear 11 is rotated to prevent the first gear 11 from loosening and causing the main blade plate to be not clamped tightly; when the main blade plate is welded, the worker reverses the rotating rod 18, the protrusion in the rotating groove 13 is disengaged from the groove on the rotating block 19, and the push plate 20 is also reset. The ratchet bar 15 is reset under the elastic force of the tension spring 17, and the ratchet bar 15 is separated from the ratchet groove 16. The ratchet bar 15 no longer blocks the first gear 11. At this time, the upper top plate 8 and the lower top plate 9 are moved closer to the middle, so that the lower top plate 9 can be separated from the main blade plate, and then the upper splint 5 and the lower splint 6 are separated from the base 2 and the upper cover 3, and then the part blocked by the lower splint 6 and the lower top plate 9 can be welded.

[0024] In one embodiment, the power mechanism includes a dual-axis motor 21 fixedly connected to the bracket 1, one end of the dual-axis motor 21 is fixedly connected to a reciprocating screw 22 rotatably connected to the bracket 1, a slide rod 23 is fixedly connected to the bracket 1, a slider 24 is connected to the reciprocating screw 22 through a ball bearing, the slider 24 is slidably connected to the slide rod 23, and the slider 24 is fixedly connected to the welding robot 4, and a driving unit is provided at the other end of the dual-axis motor 21, which is used to drive the upper cover 3 to rotate and clamp the bucket; when working, the worker starts the dual-axis motor 21, and the dual-axis motor 21 drives the reciprocating screw 22 to rotate, thereby driving the slider 24 to move, and the slide rod 23 provides guidance for the movement of the slider 24 to facilitate the smooth movement of the slider 24.

[0025] In one embodiment, the driving unit includes a rotating shaft 27 rotatably connected to the bracket 1, the rotating shaft 27 is fixedly connected to the base 2, both ends of the rotating shaft 27 are fixedly connected to the driving gear 25, the upper cover 3 is fixedly connected to the driving shaft, the base 2 is rotatably connected to the driving shaft on the upper cover 3, both ends of the driving shaft on the upper cover 3 are fixedly connected to the passive gear 26, the active gear 25 is meshed with the passive gear 26, one end of the rotating shaft 27 is connected to the other end of the dual-axis motor 21 with a transmission belt 28; when working, the worker starts the dual-axis motor 21, the dual-axis motor 21 drives the transmission belt 28 to rotate, and then drives the rotating shaft 27 and the active gear 25 to rotate, and the passive gear 26 rotates accordingly, and the passive gear 26 drives the upper cover 3 to rotate through the driving shaft to achieve clamping of the bucket.

[0026] In one embodiment, the bracket 1 is fixedly connected to a second rack 29 located on one side of the reciprocating screw 22, and a gear shaft 301 is rotatably connected to one side of the slider 24. A second gear 30 is fixedly connected to the gear shaft 301, and the second gear 30 is engaged with the second rack 29. One end of the gear shaft 301 is fixedly connected to two springs 31, and the other end of the spring 31 is fixedly connected to a striking ball 32; during operation, the movement of the slider 24 drives the second gear 30 to move, and under the action of the second rack 29, the gear shaft 301 and the second gear 30 rotate, thereby driving the spring 31 and the striking ball 32 to rotate. During the rotation process, the striking ball 32 will knock on the bottom of the main blade plate to eliminate welding stress and avoid cracking caused by residual stress.

[0027] In one embodiment, a plurality of upper hooks 33 are provided on one side of the upper cover 3, a pad 36 is slidably connected to the inside of the base 2, a plurality of lower hooks 34 are fixedly connected to one side of the pad 36, and two pull ropes 35 are fixedly connected to the side of the pad 36 away from the lower hooks 34, one end of the pull rope 35 passes through the base 2 and is fixedly connected to the rotating shaft 27; initially, as Figure 1 As shown, the pull rope 35 is in a relaxed state and the lower hook 34 is in a downward state. When working, the worker first pulls out the pad 36 and then puts the bucket on the base 2. Then the worker rotates the lower hook 34 upward so that the lower hook 34 hooks the main blade plate. As the rotating shaft 27 rotates, the upper cover 3 gradually clamps the bucket, and the upper hook 33 limits the upper end of the bucket. At the same time, the pull rope 35 will also pull the pad 36 inward, and the main blade plate will be squeezed inward through the lower hook 34, so that the distance between the main blade plate and the bottom plate is reduced, which is convenient for welding the main blade plate and the bottom plate.

[0028] In one embodiment, a support plate 37 is fixedly connected to the bracket 1, and the support plate 37 is located below the base 2; when the bucket does not need to be fixed, the lower clamping plate 6 and the lower top plate 9 can clamp the pad 36 and the base 2 to prevent the pad 36 from moving, and the support plate 37 is used to support the clamping and fixing mechanism.

[0029] A welding method for a welding device for producing a loader bucket, the welding method comprising the following steps: S1. Spraying: First, use the hoisting equipment to place the bucket on the base 2, and then spray the area near the welding position on the bucket with welding anti-spatter agent to reduce the fusion of welding spatter and bucket during welding, making it easier to clean welding spatter; S2. Clamping: The dual-axis motor 21 is started to rotate, and the dual-axis motor 21 controls the upper cover 3 to rotate, so that the upper cover 3 and the base 2 cooperate to clamp the bucket. At the same time, the deformed position of the main blade plate is fixed by the clamping and fixing mechanism, so that the joint gap between the main blade plate and the bottom plate and the side plate is shortened and uniformed, thereby reducing the welding workload and welding heat input and reducing welding deformation; S3, welding: The dual-axis motor 21 is started to rotate, and the dual-axis motor 21 drives the reciprocating screw 22 to rotate. The reciprocating screw 22 drives the slider 24 and the welding manipulator 4 to move. The welding manipulator 4 moves and welds the bucket. The welding is performed in a segmented welding method of skip welding or symmetrical welding in the order of first inside and then outside to reduce heat input and prevent welding deformation during the welding process. S4, knocking: During the mobile welding process, the slider 24 drives the welding manipulator 4, and the second gear 30 rotates under the action of the second rack 29, thereby driving the spring 31 and the striking ball 32 to rotate. The striking ball 32 knocks the bottom of the main blade during the rotation process to eliminate welding stress and avoid cracking caused by residual stress; S5. Wipe: Use a rag or other cleaning tools to clean the welding spatter generated during the welding process in the bucket to ensure that the surface of the bucket is clean after welding.

[0030] Working principle: When working, the worker first puts the bucket to be welded on the base 2, and then starts the power mechanism. The power mechanism first drives the upper cover 3 to move closer to the base 2, clamps the bottom plate and side plates of the bucket, and then moves the welding manipulator 4 to weld the bottom plate and side plates. After welding, the main blade plate is docked with the bottom plate and side plates. The two ends of the main blade plate are fixed by the side plates, and the deformed position of the main blade plate is clamped and fixed to the bottom plate by the clamping and fixing mechanism, narrowing the docking gap between the main blade plate and the bottom plate, reducing the welding workload and welding heat input. The uniform gap makes the welding heat input uniform, reducing the welding deformation caused by the deformation of the main blade plate, resulting in low welding quality, and then weld the connection position between the main blade plate and the bottom plate and side plates. When welding, the welding is performed in the order of inside first and outside through jump welding or symmetrical welding to reduce heat input and prevent welding deformation during welding. When the lifting device is in the working state, the lifting device 11 is in the working state, and the lifting device 11 is in the working state, and the lifting device 11 is in the working state, and the lifting device 11 is in the working state, and the lifting device 11 is in the working state, and the lifting device 11 is in the working state, and the lifting device 11 is in the working state, and the lifting device 11 is in the working state.

[0031] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications may be made to the present invention without departing from the principles and spirit of the invention as defined in the claims. Therefore, the detailed description of the disclosed embodiments is intended to be illustrative only and not to limit the present invention, which is to be defined by the claims.

Claims

1. A welding device for producing loader buckets, characterized by: The invention comprises a bracket (1), a base (2) is provided on the top of the bracket (1), an upper cover (3) is movably connected to the base (2), a power mechanism is provided on the bracket (1), a welding manipulator (4) is provided on the power mechanism, the power mechanism is used to drive the welding manipulator (4) to move for welding operation and control the upper cover (3) to rotate to clamp the bucket, a clamping and fixing mechanism is provided between the base (2) and the upper cover (3), the clamping and fixing mechanism is used to clamp and flatten the bending position of the main blade plate, reduce the bending degree of the main blade plate, and facilitate the welding operation of the main blade plate.

2. A welding device for producing a loader bucket according to claim 1, characterized in that: The clamping and fixing mechanism includes a clamping unit, which includes an upper clamping plate (5), the upper clamping plate (5) is movably connected to the upper cover (3), and a lower clamping plate (6) is movably connected to the base (2). A handle (7) is threadedly connected between the lower clamping plate (6) and the upper clamping plate (5), and the handle (7) is used to adjust the distance between the upper clamping plate (5) and the lower clamping plate (6) to facilitate appropriate adjustment according to different buckets. A tightening unit is provided in the handle (7), and the tightening unit is used to tighten the main blade plate to facilitate welding of the main blade plate.

3. A welding device for producing a loader bucket according to claim 2, characterized in that: The clamping unit includes an upper top plate (8) movably connected to the upper clamping plate (5), a lower top plate (9) movably connected inside the lower clamping plate (6), first racks (10) are provided at opposite ends of the upper top plate (8) and the lower top plate (9), the two first racks (10) are arranged opposite to each other, a first gear (11) is meshed and connected between the two first racks (10), a rotating rod (12) is provided inside the first gear (11), the rotating rod (12) is fixedly connected to the handle (7), and an anti-loosening unit is provided inside the rotating rod (12), the anti-loosening unit is used to fix the position of the first gear (11) to prevent the first gear (11) from reversing and affecting the clamping effect of the main blade plate.

4. A welding device for producing a loader bucket according to claim 3, characterized in that: The anti-loosening unit includes a rotating groove (13) provided in the rotating rod (12), a movable groove (14) provided in the rotating rod (12), a ratchet bar (15) movably connected in the movable groove (14), a plurality of ratchet grooves (16) provided on the first gear (11), the ratchet grooves (16) being connected to the movable groove (14), a tension spring (17) provided between the ratchet bar (15) and the movable groove (14), a rotating rod (18) movably connected in the rotating rod (12), one end of the rotating rod (18) being fixedly connected to a handle (181), the handle (181) being located on the outside of the handle (7), a rotating block (19) being provided at the other end of the rotating rod (18), the rotating block (19) being movably connected to the rotating groove (13), a push plate (20) being provided on the rotating rod (18), the push plate (20) being located in the movable groove (14), and the push plate (20) being in contact with the ratchet bar (15).

5. The welding device for producing a loader bucket according to claim 4, characterized in that: The power mechanism includes a double-axis motor (21) arranged on a bracket (1), one end of the double-axis motor (21) is provided with a reciprocating screw (22) movably connected to the bracket (1), a slide bar (23) is connected to the bracket (1), a slider (24) is movably connected to the reciprocating screw (22), the slider (24) is movably connected to the slide bar (23), and the slider (24) is connected to the welding manipulator (4), and the other end of the double-axis motor (21) is provided with a driving unit, and the driving unit is used to drive the upper cover (3) to rotate and clamp the bucket.

6. The welding device for producing a loader bucket according to claim 5, characterized in that: The driving unit comprises a rotating shaft (27) connected to the bracket (1), the rotating shaft (27) being connected to the base (2), and both ends of the rotating shaft (27) being provided with driving gears (25). A driving shaft is provided between the base (2) and the upper cover (3), and both ends of the driving shaft are provided with passive gears (26), the active gear (25) being meshed with the passive gear (26), and a transmission belt (28) is connected between one end of the rotating shaft (27) and the other end of the dual-axis motor (21).

7. The welding device for producing a loader bucket according to claim 6, characterized in that: The bracket (1) is provided with a second rack (29) located on one side of the reciprocating screw (22); one side of the slider (24) is movably connected to a gear shaft (301); a second gear (30) is provided on the gear shaft (301); the second gear (30) is engaged with the second rack (29); a spring (31) is provided at one end of the gear shaft (301); and a striking ball (32) is provided at the other end of the spring (31).

8. The welding device for producing a loader bucket according to claim 7, characterized in that: A plurality of upper hooks (33) are provided on one side of the upper cover (3), a cushion block (36) is movably connected in the base (2), a plurality of lower hooks (34) are provided on one side of the cushion block (36), a pull rope (35) is provided on the side of the cushion block (36) away from the lower hooks (34), and one end of the pull rope (35) passes through the base (2) and is connected to the rotating shaft (27).

9. The welding device for producing a loader bucket according to claim 8, characterized in that: A support plate (37) is provided on the bracket (1), and the support plate (37) is located below the base (2).

10. The welding method of a loader bucket production welding device according to claim 9, characterized in that: The welding method comprises the following steps: S1. Spraying: First, use the hoisting equipment to place the bucket on the base (2), and then spray the welding anti-spatter agent on the area near the welding position on the bucket to reduce the fusion of welding spatter and the bucket during the welding process, making it easier to clean the welding spatter; S2, clamping: start the double-axis motor (21) to work, the double-axis motor (21) controls the upper cover (3) to rotate, so that the upper cover (3) and the base (2) cooperate to clamp the bucket, and at the same time fix the deformation position of the main blade plate through the clamping and fixing mechanism, so that the joint interval between the main blade plate and the bottom plate and the side plate is reduced and the interval is uniform, thereby reducing the welding workload and welding heat input and reducing welding deformation; S3, welding: starting the double-axis motor (21), the double-axis motor (21) drives the reciprocating screw (22) to rotate, the reciprocating screw (22) drives the slider (24) and the welding manipulator (4) to move, the welding manipulator (4) moves and welds the bucket, and welding is performed in a segmented welding method of jump welding or symmetrical welding in the order of first inside and then outside, so as to reduce heat input and prevent welding deformation during the welding process; S4, knocking: the slider (24) drives the welding manipulator (4) to perform mobile welding. Under the action of the second rack (29), the second gear (30) rotates, thereby driving the spring (31) and the striking ball (32) to rotate. The striking ball (32) knocks the bottom of the main blade during the rotation process to eliminate welding stress and avoid cracking caused by residual stress; S5. Wipe: Use a rag or other cleaning tools to clean the welding spatter generated during the welding process in the bucket to ensure that the surface of the bucket is clean after welding.

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