A welding device for repairing casting defects

Abstract

The application relates to the technical field of casting welding repair, and proposes a welding device for repairing casting defects, which comprises a bottom case, a casting clamping structure arranged on the bottom case, a lifting frame, a mounting case, a polishing device and a welding device, the lifting frame is fixedly connected to one side of the bottom case, a lifting groove frame is longitudinally and slidably arranged on the lifting frame, a turnover groove frame is rotatably arranged on the lifting groove frame, the number of the mounting cases is two, the two mounting cases are fixedly connected to the turnover groove frame and are perpendicular to each other, a position adjusting structure is arranged in the mounting case, the polishing device and the welding device are arranged in the two mounting cases respectively, and the polishing device and the welding device are matched with the corresponding position adjusting structures. Through the technical scheme, the problem that the existing welding device for repairing the surface defects of the casting is more dependent on the experience of the workers and is difficult to implement the automatic welding technology is solved.

Description

Technical Field

[0001] This invention relates to the field of casting welding repair technology, specifically to a welding apparatus for repairing defects in castings. Background Technology

[0002] During the casting process, errors inevitably occur, such as insufficient casting, surface porosity, and cold shuts. These can cause surface depressions, affecting the smoothness and surface stress of the casting. Therefore, in existing technologies, after quality inspection of the castings, if surface defects are found, welding equipment is usually used to repair the surface defects. The welding rod is fused to the defective surface under high temperature, thus completing the repair of the surface defects.

[0003] In existing technologies, when repairing surface defects of castings, the location of the defects is relatively random, and the area and shape of the defects are difficult to determine. Therefore, when using welding equipment to repair the surface of castings, it is basically up to the workers to operate the welding equipment and rely on their experience to first grind the surface defects of the castings, then perform overlay welding, and finally grind the overlay welding area to complete the surface repair of the castings.

[0004] However, some surface defects in castings are small, and when workers judge the defects by visual inspection or by flaw detection, they rely heavily on their work experience. Therefore, due to the uncertainty of surface defects in castings, it is difficult to implement highly automated welding technology to complete the defect repair work on the surface of castings. Summary of the Invention

[0005] This invention proposes a welding device for repairing defects in castings, which solves the problem that in the prior art, when using welding devices to repair surface defects in castings, the work relies heavily on the experience of the workers and is difficult to automate.

[0006] The technical solution of the present invention is as follows: A welding device for repairing defects in castings, comprising a bottom housing, wherein a casting clamping structure is provided on the bottom housing, and further comprising:

[0007] A lifting frame is fixedly connected to one side of the bottom housing. A lifting slot is slidably arranged on the lifting frame, and a tilting slot is rotatably arranged on the lifting slot.

[0008] The number of mounting boxes is set to two, and both are fixedly connected to the flip-up slot frame. The two mounting boxes are perpendicular to each other, and the mounting boxes are equipped with a position adjustment structure.

[0009] Grinding equipment and welding equipment are respectively installed in two mounting boxes, and both grinding equipment and welding equipment are matched with corresponding position adjustment structures;

[0010] The defect imprinting structure is provided on the flipping slot frame and is used to imprint defects on the surface of the casting.

[0011] The camera equipment is installed on the top of the lifting frame and is used to photograph the defects in the casting.

[0012] According to an exemplary embodiment of this disclosure, the casting clamping structure includes a rotating cylinder seat, a screw drive assembly, and a fixed socket. The rotating cylinder seat is rotatably mounted on the bottom housing. The screw drive assembly is disposed inside the rotating cylinder seat. A plurality of through slots are formed on the top circumference of the rotating cylinder seat. The fixed socket is slidably disposed in each of the through slots. The fixed socket is driven to cooperate with the screw drive assembly to drive the plurality of fixed sockets to move relative to each other.

[0013] Furthermore, it also includes multiple L-shaped inserts, which are inserted into the fixed socket and clamp the bottom of the casting.

[0014] The lifting frame is fixedly connected to a longitudinal slot frame, the lifting slot frame is slidably connected to the longitudinal slot frame, and the longitudinal slot frame is provided with a screw transmission assembly that drives the lifting slot frame to move longitudinally.

[0015] Furthermore, rotating seats are provided on both sides of the tilting slot frame, and the rotating seats are rotatably connected to the lifting slot frame. The lifting slot frame is provided with a first drive motor that drives the rotating seats and the tilting slot frame to rotate.

[0016] Furthermore, the mounting housing has a slot, and a flexible ring is provided in the slot. The outer wall of the grinding equipment or the welding equipment is in contact with the inner arc surface of the flexible ring, thus supporting and fixing the grinding equipment and the welding equipment.

[0017] According to an exemplary embodiment of this disclosure, the position adjustment structure includes a first electric cylinder and a rotating shaft seat. The first electric cylinder is disposed on the mounting housing, and the output end of the first electric cylinder is connected to the rotating shaft seat. Both the grinding equipment and the welding equipment are rotatably disposed on the rotating shaft seat.

[0018] According to an exemplary embodiment of this disclosure, the defect imprinting structure includes a second electric cylinder, an abutment holder, and an imprinting mold. The second electric cylinder is disposed on the flipping slot frame, the abutment holder is fixedly connected to the output end of the second electric cylinder, and the imprinting mold is disposed on the abutment holder. The imprinting mold enters the casting defect and imprints the shape of the defect.

[0019] Furthermore, the camera device is provided with a central camera and side cameras located on both sides, wherein the central camera is capable of capturing the shape of the rubbing mold.

[0020] Furthermore, the bottom of the lifting trough frame is provided with a receiving cylinder, and the top of the receiving cylinder is provided with a bendable receiving plate.

[0021] The working principle and beneficial effects of this invention are as follows:

[0022] 1. When it is necessary to repair defects on the surface of the casting after casting, first move the casting to the top of the rotating cylinder seat. Depending on the height and shape of the casting, an L-shaped insert of the corresponding volume can be used to clamp the casting to achieve clamping operation of castings of different volumes, and also to adapt to the longitudinal movement area of ​​the tilting slot frame.

[0023] 2. After fixing the casting to the upper side of the rotating cylinder, while the casting rotates with the rotating cylinder, a camera is used to photograph the surface of the casting. The photographed images are uploaded to the cloud and compared with the finished product images in the system to identify defective areas. The defective area is then rotated to the side closer to the tilting frame. As the lifting frame moves longitudinally, the tilting frame is tilted, allowing the grinding equipment to first grind the defective area on the casting surface. Then, the tilting frame continues to rotate, aligning the imprinting mold with the defective area. The imprinting mold is then moved into the defective area, and after the imprinting mold is removed, it is used... A central camera located in the middle captures images of the deformed rubbing mold, thereby determining the welding area and depth of the welding equipment used in the subsequent overlay welding process. Finally, it drives the rotating tray to rotate, aligning the welding equipment with the defect area and performing welding operations on the defect to repair the surface defects of the casting. In actual operation, this invention systematically completes the image comparison of the defect area of ​​the casting, targeted grinding, and determination of the defect shape after grinding. Finally, it welds and repairs the defect area of ​​the casting, which not only reduces the workload of the staff, but also ensures the timely detection of casting defects and improves the accuracy of the repair work. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1This is a schematic diagram of the structure of a welding device for repairing defects in castings provided by the present invention;

[0026] Figure 2 For the present invention Figure 1 A partial cross-sectional view of the mid-bottom chassis.

[0027] Figure 3 For the present invention Figure 1 A schematic diagram of the assembly between the bottom-mid chassis and the casting clamping structure;

[0028] Figure 4 For the present invention Figure 1 A schematic diagram of the structure of the lifting frame, lifting trough frame, tilting trough frame, grinding equipment and welding equipment working together;

[0029] Figure 5 For the present invention Figure 1 A schematic diagram of the structure of the lifting slot frame, tilting slot frame, mounting box, rubbing mold, grinding equipment and welding equipment;

[0030] Figure 6 For the present invention Figure 1 A partial cross-sectional structural diagram showing the coordination of the lifting trough frame, the tilting trough frame, the mounting chassis, the rubbing mold, the grinding equipment, and the welding equipment.

[0031] Figure 7 For the present invention Figure 1 A schematic diagram of the structure in which the central lifting frame, camera equipment, central camera, and side cameras work together;

[0032] Figure 8 For the present invention Figure 1 A schematic diagram of the structure of the L-shaped insert and the extension rod.

[0033] In the diagram: 1. Bottom chassis; 2. Lifting frame; 3. Lifting slot frame; 4. Tilting slot frame; 5. Mounting chassis; 6. Grinding equipment; 7. Welding equipment; 8. Camera equipment; 9. Rotating cylinder seat; 10. Fixed socket; 11. L-shaped insert; 12. Longitudinal slot frame; 13. Rotating seat; 14. First drive motor; 15. Flexible ring; 16. First electric cylinder; 17. Rotating shaft seat; 18. Second electric cylinder; 19. Abutment seat; 20. Imprinting mold; 21. Central camera; 22. Side camera; 23. Receiving cylinder; 24. Receiving plate; 25. Gearbox; 26. Second drive motor; 27. Flat threaded disc; 28. Drive shaft; 29. ​​Clutch; 30. Third drive motor; 31. Extension rod; 32. Lifting screw; 33. Fourth drive motor; 34. Fifth drive motor; 35. Video camera. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] In existing technologies, when using welding equipment to repair surface defects in castings, to address the difficulty of systematically completing casting repair operations with existing welding equipment, such as... Figures 1 to 8 As shown, this embodiment proposes a welding device for repairing casting defects, including a bottom housing 1. The bottom housing 1 is provided with a casting clamping structure, which includes a rotating cylinder 9, a screw drive assembly, and a fixed socket 10. The rotating cylinder 9 is rotatably mounted on the bottom housing 1. The screw drive assembly is provided inside the rotating cylinder 9. Multiple through slots are opened on the top circumference of the rotating cylinder 9. A fixed socket 10 is slidably arranged in each through slot. The fixed socket 10 is driven by the screw drive assembly to drive the multiple fixed sockets 10 to move relative to each other. The screw drive assembly drives the multiple fixed sockets 10 to move closer to each other, so that the fixed sockets 10 can support the bottom of the casting to be welded. A gearbox 25 is provided at the bottom of the rotating cylinder 9. A second drive motor 26 is provided inside the bottom housing 1. The output end of the second drive motor 26 is driven by the gearbox 25. When the second drive motor 26 is started, the rotating cylinder 9 is driven by the gearbox 25, so that the rotating cylinder 9 moves circumferentially on the casting, which facilitates the judgment of the circumferential defect position on the surface of the casting.

[0036] The screw drive assembly includes a flat threaded disc 27, which is rotatably connected inside a rotating cylinder 9. A drive shaft 28 is fixedly connected to the bottom of the flat threaded disc 27. A clutch 29 is provided at the bottom of the rotating cylinder 9, and the drive shaft 28 and the clutch 29 are in a transmission engagement. A third drive motor 30 is provided inside the rotating cylinder 9, and the output end of the third drive motor 30 is in a transmission engagement with the clutch 29. When the rotating cylinder 9 is stationary and the positions of multiple fixed sockets 10 need to be adjusted, the clutch 29 is used to connect the driving force of the third drive motor 30 with the drive shaft 28, starting the third drive motor 30 to drive the drive shaft 28 to rotate, causing the flat threaded disc 27 to rotate. Since the bottom of the fixed socket 10 is threadedly connected to the flat threaded disc 27, the fixed socket 10 can rotate within the corresponding through slot during the rotation of the flat threaded disc 27.

[0037] In this embodiment, multiple L-shaped inserts 11 are also included. The L-shaped inserts 11 are inserted into the fixed sockets 10. The multiple L-shaped inserts 11 clamp the bottom of the casting. Since different castings have different volumes and heights, the appropriate L-shaped inserts 11 are customized based on the actual volume of the castings produced. The L-shaped inserts 11 are inserted into the corresponding fixed sockets 10, so that the inner arc of the L-shaped inserts 11 clamps the bottom of the casting. Since the flipping slot frame 4 has a minimum flipping height, an extension rod 31 can be welded to the bottom of the L-shaped inserts 11 and inserted into the fixed sockets 10 to give the casting a certain clamping height.

[0038] In this embodiment, a lifting frame 2 is also included. The lifting frame 2 is fixedly connected to one side of the bottom housing 1. A lifting slot frame 3 is longitudinally slidably arranged on the lifting frame 2. A tilting slot frame 4 is rotatably arranged on the lifting slot frame 3. A longitudinal slot frame 12 is fixedly connected inside the lifting frame 2. The lifting slot frame 3 is slidably connected to the longitudinal slot frame 12. A screw transmission assembly for driving the longitudinal movement of the lifting slot frame 3 is arranged on the longitudinal slot frame 12. The screw transmission assembly includes a lifting screw 32, which is rotatably connected inside the longitudinal slot frame 12. A fourth drive motor 33 is arranged on the lifting slot frame 3. The output end of the fourth drive motor 33 is connected to the lifting screw 32. The lifting slot frame 3 is threadedly connected to the lifting screw 32 through a transmission nut assembly. When it is necessary to adjust the position of the tilting slot frame 4 according to the defect area on the surface of the casting, the fourth drive motor 33 is started to drive the lifting screw 32 to rotate. The lifting screw 32 is used to adjust the height of the lifting slot frame 3 and the tilting slot frame 4.

[0039] The rotating slot frame 4 is provided with rotating seats 13 on both sides. The rotating seats 13 are rotatably connected to the lifting slot frame 3. The lifting slot frame 3 is provided with a first drive motor 14 that drives the rotating seats 13 and the rotating slot frame 4 to rotate. When it is necessary to adjust the circumferential position of the rotating slot frame 4 so that the rotating slot frame 4 can complete the grinding, imprinting and welding operations in sequence during the rotating process, the first drive motor 14 is started to drive the rotating seats 13 and the rotating slot frame 4 to rotate, so that the rotating slot frame 4 rotates along the center point of the rotating seats 13.

[0040] In this embodiment, two mounting housings 5 ​​are provided, both of which are fixedly connected to the tilting frame 4. The two mounting housings 5 ​​are perpendicular to each other. A position adjustment structure is provided inside the mounting housing 5. A slot is opened on the mounting housing 5, and a flexible ring 15 is provided in the slot. The outer wall of the grinding equipment 6 or the welding equipment 7 is in contact with the inner arc surface of the flexible ring 15, supporting and fixing the grinding equipment 6 and the welding equipment 7. During the rotation of the tilting frame 4, the position of the two mounting housings 5 ​​will be adjusted so that the grinding equipment 6 or the welding equipment 7 corresponds to the defect area of ​​the casting. Because the flexible ring 15 can effectively support the grinding equipment 6 and the welding equipment 7 when adjusting the working angle of the grinding equipment 6 and the welding equipment 7 in the future.

[0041] Grinding equipment 6 and welding equipment 7 are respectively installed in two mounting boxes 5, and both grinding equipment 6 and welding equipment 7 are matched with corresponding position adjustment structures. The position adjustment structure includes a first electric cylinder 16 and a rotating shaft seat 17. The first electric cylinder 16 is installed on the mounting box 5, and the output end of the first electric cylinder 16 is connected to the rotating shaft seat 17. Grinding equipment 6 and welding equipment 7 are rotatably mounted on the rotating shaft seat 17. A fifth drive motor 34 is installed on the rotating shaft seat 17 to drive the rotating shaft to rotate. Starting the fifth drive motor 34 can drive the rotating shaft on the rotating shaft seat 17 to rotate, so that grinding equipment 6 and welding equipment 7 rotate around the center point of the rotating shaft seat 17 to adjust the operation of grinding equipment 6 and welding equipment 7, and start the first electric cylinder 16 to drive the rotating shaft seat 17 to move, so as to adjust the moving distance of grinding equipment 6 and welding equipment 7.

[0042] The tilting frame 4 is equipped with a defect imprinting structure for imprinting defects on the surface of the casting. The defect imprinting structure includes a second electric cylinder 18, a contact seat 19, and an imprinting mold 20. The second electric cylinder 18 is mounted on the tilting frame 4, and the contact seat 19 is fixedly connected to the output end of the second electric cylinder 18. The imprinting mold 20 is mounted on the contact seat 19. The imprinting mold 20 enters the defect area of ​​the casting and imprints the shape of the defect. The defect area is then ground using a grinding device 6 to facilitate subsequent welding repair. The position of the second electric cylinder 18 is adjusted, and the angle between the installation angle of the second electric cylinder 18 and the grinding equipment 6 or welding equipment 7 is close to 45 degrees, so that the abutment seat 19 is moved to the position corresponding to the defect. The second electric cylinder 18 is started to drive the abutment seat 19 and the imprint mold 20 to move into the defect, so that the imprint mold 20 enters the defect. After the imprint mold 20 is removed from the defect, the internal shape of the defect is imprinted on the imprint mold 20, thereby determining the shape of the subsequent welding overlay and the movement path of the subsequent welding equipment 7.

[0043] A camera device 8 is installed at the top of the lifting frame 2 to photograph defects in the casting. The camera device 8 has a central camera 21 in the middle and side cameras 22 on both sides. The central camera 21 can photograph the shape of the imprint mold 20. The central camera 21 and the side cameras 22 on the camera device 8 are used to photograph the surface of the casting. By uploading the photographed photos to the cloud and comparing them with the finished product images in the system, the defective areas of the casting can be identified. Image comparison technology is a commonly used sensing technology in the field of industrial identification. The technique involves uploading images of the finished casting to the cloud, then using a central camera 21 and multiple side cameras 22 to photograph the casting, comparing the casting photos with the finished product photos to identify defective areas between the casting and the finished product. After assessment, the defective areas of the casting are repaired by welding. When the imprint mold 20 is removed from the defective area, the central camera 21 is used to photograph and compare the shape imprinted by the imprint mold 20 to determine the welding area and the movement path of the welding equipment 7.

[0044] Furthermore, a video camera 35 is installed on the mounting box 5 corresponding to the grinding equipment 6. The video camera 35 is used to help the staff to perform grinding operations in the defective area of ​​the casting, making it easier for the staff to observe the defective area.

[0045] The bottom of the lifting trough frame 3 is provided with a receiving cylinder 23, and the top of the receiving cylinder 23 is provided with a bendable receiving plate 24. Because some metal chips are generated during the operation of the grinding equipment 6, and the receiving plate 24 has the characteristic of being able to bend when in contact with the outer surface of the casting, after the receiving plate 24 comes into contact with the casting, it adapts to the outer surface of the casting and changes its shape, so that the metal chips can enter the receiving cylinder 23 along the receiving plate 24, so that the receiving cylinder 23 collects the metal chips. The top of the receiving cylinder 23 is connected to the bottom of the lifting trough frame 3, and the receiving cylinder 23 has the characteristic of longitudinal extension and retraction, so that the overall height of the receiving cylinder 23 adapts to the height change of the lifting trough frame 3.

[0046] The working principle of this welding device for repairing defects in castings is as follows:

[0047] After the casting is fixed to the upper side of the rotating cylinder seat 9, the casting is rotated along with the rotating cylinder seat 9. The camera device 8 is used to take pictures of the surface of the casting. The pictures are uploaded to the cloud and compared with the finished product pictures in the system to determine the defective areas of the casting. Then the defective area is rotated to the side close to the flipping slot frame 4. During the longitudinal movement of the lifting slot frame 3, the flipping slot frame 4 is flipped. First, the grinding device 6 grinds the defective area on the surface of the casting. Then, the flipping slot frame 4 is rotated to make the imprint mold 20 correspond to the defective area. The imprint mold 20 is moved into the defective area. After the imprint mold 20 is moved out, the central camera 21 located in the middle takes pictures of the deformed imprint mold 20 to determine the welding area and depth of the welding device 7 for the subsequent overlay welding process. Finally, the flipping slot frame 4 is rotated to make the welding device 7 correspond to the defective area and the welding operation is performed on the defect to repair the surface defects of the casting.

[0048] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding apparatus for repairing defects in castings, comprising a bottom housing (1), wherein a casting clamping structure is provided on the bottom housing (1), characterized in that, Also includes: The lifting frame (2) is fixedly connected to one side of the bottom housing (1). The lifting frame (2) is longitudinally slidably provided with a lifting slot frame (3), and the lifting slot frame (3) is rotatably provided with a tilting slot frame (4). The number of mounting boxes (5) is set to two, and both are fixedly connected to the flip rack (4). The two mounting boxes (5) are perpendicular to each other, and the mounting boxes (5) are provided with a position adjustment structure. Grinding equipment (6) and welding equipment (7) are respectively installed in two mounting boxes (5), and both grinding equipment (6) and welding equipment (7) are matched with the corresponding position adjustment structure; The defect imprinting structure is provided on the flipping slot frame (4) for imprinting defects on the surface of the casting. The camera device (8) is installed on the top of the lifting frame (2) for photographing the defects of the casting.

2. The welding apparatus for repairing casting defects according to claim 1, characterized in that, The casting clamping structure includes: Rotary cylinder seat (9), which is rotatably mounted on the bottom casing (1); The helical drive assembly is provided inside the rotating cylinder (9); The fixed socket (10) has multiple through slots on the top circumference of the rotating cylinder seat (9), and each through slot is slidably provided with the fixed socket (10). The fixed socket (10) is in transmission cooperation with the screw transmission assembly to drive the multiple fixed sockets (10) to move relative to each other.

3. The welding apparatus for repairing defects in castings according to claim 2, characterized in that, Also includes: The number of L-shaped inserts (11) is set to multiple. The L-shaped inserts (11) are inserted into the fixed socket (10) and the multiple L-shaped inserts (11) clamp the bottom of the casting.

4. The welding apparatus for repairing defects in castings according to claim 3, characterized in that, The lifting frame (2) is fixedly connected to a longitudinal slot frame (12), and the lifting slot frame (3) is slidably connected to the longitudinal slot frame (12). The longitudinal slot frame (12) is provided with a screw transmission assembly that drives the lifting slot frame (3) to move longitudinally.

5. A welding apparatus for repairing defects in castings according to claim 4, characterized in that, Rotating seats (13) are provided on both sides of the flipping slot frame (4). The rotating seats (13) are rotatably connected to the lifting slot frame (3). The lifting slot frame (3) is provided with a first drive motor (14) that drives the rotating seats (13) and the flipping slot frame (4) to rotate.

6. A welding apparatus for repairing defects in castings according to claim 5, characterized in that, The mounting box (5) has a slot, and a flexible ring (15) is provided in the slot. The outer wall of the grinding equipment (6) or the welding equipment (7) is in contact with the inner arc surface of the flexible ring (15) to support and fix the grinding equipment (6) and the welding equipment (7).

7. A welding apparatus for repairing defects in castings according to claim 6, characterized in that, The position adjustment structure includes: The first electric cylinder (16) is mounted on the mounting housing (5); Rotary shaft seat (17), the output end of the first electric cylinder (16) is connected to the rotary shaft seat (17), and the grinding equipment (6) and the welding equipment (7) are rotatably mounted on the rotary shaft seat (17).

8. A welding apparatus for repairing defects in castings according to claim 5, characterized in that, The defect imprint structure includes: The second electric cylinder (18) is mounted on the tilting rack (4); Abutting bracket (19) is fixedly connected to the output end of the second electric cylinder (18); The rubbing mold (20) is set on the abutment seat (19). The rubbing mold (20) enters the defect of the casting and rubs the shape of the defect.

9. A welding apparatus for repairing defects in castings according to claim 8, characterized in that, The camera device (8) is provided with a central camera (21) in the middle and side cameras (22) on both sides. The central camera (21) is capable of capturing the shape of the rubbing mold (20).

10. A welding apparatus for repairing defects in castings according to claim 1, characterized in that, The bottom of the lifting trough (3) is provided with a receiving cylinder (23), and the top of the receiving cylinder (23) is provided with a bendable receiving plate (24).

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