A flange welding device

Abstract

The application discloses a flange plate welding device, and belongs to the technical field of flange welding equipment. The device comprises a case, a flange fixing device, a flange transmission structure, a pipeline fixing device, a pipeline transmission structure and a three-axis welding mechanical arm. The three-axis welding mechanical arm is fixedly installed on the top wall of the case. The flange transmission structure and the pipeline transmission structure are arranged on the two sides of the case respectively. The flange fixing device and the pipeline fixing device are installed on the flange transmission structure and the pipeline transmission structure respectively. The flange plate welding device can overcome the problems of separate fixed and rotary driving and low function integration, effectively solve the problems that the flange fixing and rotary driving in the existing device are difficult to be considered in limited space, the flange is prone to axial movement and circumferential deviation when rotating, and the welding quality is affected.

Description

Technical Field

[0001] This invention belongs to the technical field of flange welding equipment, specifically referring to a flange welding device. Background Technology

[0002] Currently, in flange and pipe welding operations, the functions of fixing the flange and driving its rotation are usually performed by two independent functional modules. After the flange is clamped and positioned using a chuck or ring-shaped fixing frame, an additional rotary table or rotary drive mechanism drives the flange to rotate. This "fix first, then rotate" separate design not only results in a bulky equipment structure and large space occupation, but also causes spatial interference between the fixing device and the rotary drive device in the flange area, making it difficult to simultaneously ensure reliable flange fixing and smooth rotation drive within a limited welding station.

[0003] Furthermore, existing flange fixing devices often employ rigid jaws or clamping blocks, which have poor adaptability to flanges of different diameters, requiring adjustment or replacement of the clamps when changing specifications. Flange rotation is mostly driven by the chuck itself or external roller frames, resulting in a long force transmission path. Additionally, the flange is prone to axial movement and circumferential displacement during rotation, affecting the continuity and uniformity of the weld. How to achieve integrated flange fixing and rotation drive within a limited space, while ensuring both fixing reliability and rotational stability, has become a key technical challenge that needs to be addressed in this field. Summary of the Invention

[0004] In order to overcome the problems of separate fixed and rotary drives and low functional integration, this invention provides a flange welding device, which effectively solves the problems in existing devices where flange fixing and rotary drive are difficult to balance in a limited space, and where axial movement and circumferential displacement easily occur when the flange rotates, affecting the weld quality.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a flange welding device, including a chassis, a flange fixing device, a flange transmission structure, a pipe fixing device, a pipe transmission structure, and a three-axis welding robot arm. The three-axis welding robot arm is fixedly installed on the top wall of the chassis. The three-axis welding robot arm can realize the functions of horizontal rotation and adjustment of welding angle. The flange transmission structure and the pipe transmission structure are respectively arranged on both sides of the chassis. The flange fixing device and the pipe fixing device are respectively installed on the flange transmission structure and the pipe transmission structure.

[0006] Furthermore, the chassis is divided into upper and lower layers. The upper layer of the chassis is a welding layer for flanges, and the lower layer of the chassis is a placement layer for components such as controllers. The baffle at the front end of the welding layer is made of a material that can reduce the strong light generated by welding while still being visible. The rear end of the welding layer is provided with a discharge port, and the bottom wall of the discharge port is sloped to facilitate the delivery of the welded flange. The two sides of the welding layer are provided with flange and pipe feeding inlets.

[0007] Furthermore, the flange fixing device includes a flange fixing rope loop, a loop engaging cylinder, and a double-sided connecting bracket. The flange fixing rope loop is sleeved and fixed to the flange plate. The telescopic end of the loop engaging cylinder is hinged to one side of the flange fixing rope loop. One end of the double-sided connecting bracket is hinged to the other side of the flange fixing rope loop, and the other end of the double-sided connecting bracket is hinged to the bottom of the loop engaging cylinder. Reinforcing ribs are provided at the corners of the double-sided connecting bracket to improve its stability.

[0008] Furthermore, the flange transmission structure includes a screw groove, a ball screw, a fixed plate A, a rotating plate A, an extension plate A, and a discharge cylinder A. The screw groove is fixedly installed on the inner wall of the machine housing. The ball screw engages and rotates within the screw groove. A threaded nut is provided on the ball screw, and the nut is fixedly connected to the extension plate A. The fixed plate A is fixedly connected to the top wall of the extension plate A. The rotating plate A is hinged to the fixed plate A. A set of double-sided connecting brackets is fixedly provided on both the fixed plate A and the rotating plate A. The discharge cylinder A is hinged to the side wall of the extension plate A. When the discharge cylinder A extends or retracts, the rotating plate A rotates with the double-sided connecting brackets, causing the flange fixing rope loop on one side to tilt. After the flange loses support on one side, it is discharged from the equipment. Reinforcing ribs are provided at the connection points between the two sets of double-sided connecting brackets and the rotating plate A and the extension plate A, respectively, to improve stability.

[0009] Furthermore, the pipe fixing device includes a feeding extension plate, a feeding lifting plate, a fixed plate B, a rotating plate B, an extension plate B, a discharge cylinder B, and a connecting support plate. The extension plate B is fixedly installed on the inner wall of the machine housing, and the fixed plate B is fixedly installed on the extension plate B. The rotating plate B is hinged to the fixed plate B. There are two sets of feeding lifting plates, and the two sets of feeding lifting plates are fixedly connected to the fixed plate B and the rotating plate B respectively through connecting plates. The feeding extension plate is fixedly installed on the feeding port on the side wall of the machine housing. The feeding extension plate and the feeding lifting plate are set at the same horizontal height. One end of the connecting support plate is fixedly connected to the rotating plate B, and the other end of the connecting support plate is fixedly connected to the feeding lifting plate. The telescopic end of the discharge cylinder B is hinged to the connecting support plate, and the base of the discharge cylinder B is hinged to the extension plate B.

[0010] Furthermore, the pipeline transmission structure includes a transmission cylinder, a pipeline pushing plate, double-sided limiting brackets, and strong magnetic fixing clamps. The base of the transmission cylinder is fixedly connected to the extension plate B. The pipeline pushing plate is fixedly mounted on the telescopic end of the transmission cylinder. The double-sided limiting brackets are engaged and rotatably mounted on the pipeline pushing plate. Two sets of strong magnetic fixing clamps are respectively fixedly mounted at both ends of the double-sided limiting brackets. The clamping plates of the strong magnetic fixing clamps slide on the fixing clamps. By connecting an external power source, the clamping plates are energized to generate magnetic attraction, thereby fixing the pipeline. The double-sided limiting brackets are driven by a servo motor.

[0011] Furthermore, the pipe pusher plate engages and slides between two adjacent sets of feed extension plates.

[0012] Furthermore, the chassis is equipped with a rotating roller and a roller adjusting cylinder. The base of the roller adjusting cylinder is fixedly installed on the inner wall of the chassis, and the roller adjusting cylinder is tilted towards the center of the flange. The rotating roller is engaged and rotated on the telescopic end of the roller adjusting cylinder.

[0013] Furthermore, the rotating roller passes through the flange fixing rope loop and contacts the flange that is fixed thereto. When the flange enters the machine housing, the roller adjusting cylinder retracts. After the flange contacts and is fixed with the pipeline, the roller adjusting cylinder extends, and the rotating roller contacts and is fixed with the flange, thereby providing a rotational driving force for the flange during the welding process of the three-axis welding robot arm.

[0014] The flange welding device provided in this solution has the following advantages:

[0015] (1) This application achieves automatic unloading after welding by linking the flange fixing device and the pipe fixing device for material unloading. When the unloading cylinder A and the unloading cylinder B retract simultaneously, the rotating plate A and the rotating plate B deflect synchronously. After the flange assembly loses its double-sided support, it is automatically sent out from the rear end of the machine box by means of the inclined surface of the bottom wall of the discharge port. This design avoids manual contact with high-temperature workpieces, which not only improves production efficiency but also eliminates the safety hazard of burns.

[0016] (2) This application uses a flange fixing rope loop sleeve in conjunction with a loop sleeve clamping cylinder to achieve adaptive fixing of the flange. At the same time, the rotating roller passes through the flange fixing rope loop sleeve and directly contacts the flange, providing rotational driving force for it during the welding process. The open structure of the rope loop sleeve is compatible with flanges of different diameters and allows the roller to pass through the rope loop sleeve and act on the flange surface, realizing the synergistic integration of fixing and driving functions.

[0017] (3) This application uses a strong magnetic clamp in conjunction with a double-sided limiting bracket to achieve adsorption fixation and rotation drive of the pipeline; after the strong magnetic clamp is energized, the clamp plate is magnetically attracted to the outer wall of the pipeline, and it is released when the power is cut off, so as to achieve quick assembly and disassembly; the double-sided limiting bracket provides support to both ends of the pipeline at the same time, preventing axial movement during rotation, ensuring the stability of the relative position between the flange and the pipeline during the welding process, thereby improving the quality of the weld. Attached Figure Description

[0018] Figure 1 A front perspective view of a flange welding device provided by the present invention;

[0019] Figure 2 A rear perspective view of a flange welding device provided by the present invention;

[0020] Figure 3 A rear perspective view of the internal structure of a flange welding device provided by the present invention;

[0021] Figure 4 A front perspective view of the internal structure of a flange welding device provided by the present invention;

[0022] Figure 5 A top view of the internal structure of a flange welding device provided by the present invention;

[0023] Figure 6 A front view of the internal structure of a flange welding device provided by the present invention;

[0024] Figure 7 An exploded view of the internal structure of a flange welding device provided by the present invention;

[0025] Figure 8 A schematic diagram of the connection structure between the flange fixing device and the flange transmission structure;

[0026] Figure 9 This is a schematic diagram of the connection structure between the pipe fixing device and the pipe transmission structure.

[0027] Among them, 1. Chassis, 2. Flange fixing device, 3. Flange transmission structure, 4. Pipe fixing device, 5. Pipe transmission structure, 6. Three-axis welding robotic arm, 11. Welding layer, 12. Placement layer, 121. Discharge port, 122. Inlet port, 21. Flange fixing rope loop, 22. Loop locking cylinder, 23. Double-sided connecting bracket, 31. Screw groove, 32. Ball screw, 33. Fixed plate A, 34. Rotating plate A, 35. Extension plate A, 36. Discharge cylinder A, 41. Inlet extension plate, 42. Feeding lifting plate, 43. Fixed plate B, 44. Rotating plate B, 45. Extension plate B, 46. Discharge cylinder B, 47. Connecting support plate, 51. Transmission cylinder, 52. Pipe pushing plate, 53. Double-sided limiting bracket, 54. Strong magnetic fixing clamp, 13. Rotating roller, 14. Roller adjusting cylinder.

[0028] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] like Figures 1-9 As shown, the flange welding device provided by the present invention includes a housing 1, a flange fixing device 2, a flange transmission structure 3, a pipe fixing device 4, a pipe transmission structure 5, and a three-axis welding robot arm 6. The three-axis welding robot arm 6 is fixedly installed on the top wall of the housing 1. The flange transmission structure 3 and the pipe transmission structure 5 are respectively arranged on both sides of the housing 1. The flange fixing device 2 and the pipe fixing device 4 are respectively installed on the flange transmission structure 3 and the pipe transmission structure 5.

[0032] The chassis 1 is divided into upper and lower layers. The upper layer of the chassis 1 is a flange welding layer 11, and the lower layer of the chassis 1 is a storage layer 12 for components such as controllers. The baffle at the front end of the welding layer 11 is made of a material that can reduce the strong light generated by welding and is visible. The rear end of the welding layer 11 is provided with a discharge port 121. The bottom wall of the discharge port 121 is set as a slope. The two sides of the welding layer 11 are provided with flanges and pipe feeding inlets 122.

[0033] The flange fixing device 2 includes a flange fixing rope loop 21, a loop engaging cylinder 22, and a double-sided connecting bracket 23. The flange fixing rope loop 21 is sleeved and fixed to the flange plate. The telescopic end of the loop engaging cylinder 22 is hinged to one side of the flange fixing rope loop 21. One end of the double-sided connecting bracket 23 is hinged to the other side of the flange fixing rope loop 21, and the other end of the double-sided connecting bracket 23 is hinged to the bottom of the loop engaging cylinder 22. The corner of the double-sided connecting bracket 23 is provided with reinforcing ribs to improve the stability of the double-sided connecting bracket 23.

[0034] The flange transmission structure 3 includes a screw groove 31, a ball screw 32, a fixed plate A33, a rotating plate A34, an extension plate A35, and a discharge cylinder A36. The screw groove 31 is fixedly installed on the inner wall of the housing 1. The ball screw 32 is engaged and rotated in the screw groove 31. The ball screw 32 is provided with a threaded nut, which is fixedly connected to the extension plate A35. The fixed plate A33 is fixedly connected to the top wall of the extension plate A35. The rotating plate A34 is hinged to the fixed plate A33. A set of double-sided connecting brackets 23 are fixedly provided on the fixed plate A33 and the rotating plate A34 respectively. The discharge cylinder A36 is hinged to the side wall of the extension plate A35.

[0035] The pipe fixing device 4 includes a feeding extension plate 41, a feeding lifting plate 42, a fixed plate B43, a rotating plate B44, an extension plate B45, a discharge cylinder B46, and a connecting support plate 47. The extension plate B45 is fixedly installed on the inner wall of the housing 1, and the fixed plate B43 is fixedly installed on the extension plate B45. The rotating plate B44 is hinged to the fixed plate B43. There are two sets of feeding lifting plates 42, and the two sets of feeding lifting plates 42 are respectively connected to the fixed plate B46 via a connecting plate. 3 is fixedly connected to the rotating plate B44. The feeding extension plate 41 is fixedly installed on the feeding port 122 on the side wall of the machine box 1. The feeding extension plate 41 and the feeding lifting plate 42 are set at the same horizontal height. One end of the connecting support plate 47 is fixedly connected to the rotating plate B44, and the other end of the connecting support plate 47 is fixedly connected to the feeding lifting plate 42. The telescopic end of the discharge cylinder B46 is hinged to the connecting support plate 47, and the base of the discharge cylinder B46 is hinged to the extension plate B45.

[0036] The pipeline transmission structure 5 includes a transmission cylinder 51, a pipeline pushing plate 52, a double-sided limiting bracket 53, and a strong magnetic fixing clamp 54. The base of the transmission cylinder 51 is fixedly connected to the extension plate B45. The pipeline pushing plate 52 is fixedly mounted on the telescopic end of the transmission cylinder 51. The double-sided limiting bracket 53 is engaged and rotated on the pipeline pushing plate 52. Two sets of strong magnetic fixing clamps 54 are respectively fixedly mounted at both ends of the double-sided limiting bracket 53. The clamping plate of the strong magnetic fixing clamp 54 slides on the fixing clamp. The double-sided limiting bracket 53 is driven by a servo motor.

[0037] The pipe pusher plate 52 engages and slides between two adjacent sets of feed extension plates 41.

[0038] The housing 1 is equipped with a rotating roller 13 and a roller adjusting cylinder 14. The base of the roller adjusting cylinder 14 is fixedly installed on the inner wall of the housing 1, and the roller adjusting cylinder 14 is tilted towards the center of the flange. The rotating roller 13 is engaged and rotated on the telescopic end of the roller adjusting cylinder 14.

[0039] The rotating roller 13 passes through the flange fixing rope loop 21 and contacts the flange that is fixed thereto.

[0040] In practical use, the flange and the pipe are placed on the flange fixing device 2 and the pipe fixing device 4 respectively from the feed inlets 122 on both sides of the machine box 1;

[0041] After the flange is placed between the two sets of flange fixing rope loops 21, the loop engagement cylinder 22 extends, and the flange fixing rope loop 21 rotates with its hinge point with the double-sided connecting bracket 23 as the center. The two sets of flange fixing rope loops 21 on both sides of the flange nest and fix the flange.

[0042] The metal tube is placed between the two sets of feed extension plates 41. At this time, the transmission cylinder 51 is in the extended state, and the strong magnetic fixing clamp 54 is outside the placement range of the feed extension plates 41.

[0043] The pipe is pushed into the housing 1, the transmission cylinder 51 retracts, the pipe pushing plate 52 moves from the gap between the two sets of feeding extension plates 41, the strong magnetic fixing clamp 54 engages the edge of the pipe, the strong magnetic fixing clamp 54 is energized, the clamp plate generates magnetism and is attracted to the outer wall of the pipe, so that the strong magnetic fixing clamp 54 is fixed relative to the pipe. As the transmission cylinder 51 retracts, the pipe moves from the feeding extension plate 41 to the area where the feeding support plate 42 is located.

[0044] The flange is sent into the housing 1, the ball screw 32 rotates under the drive of the motor, and the nut threaded to the ball screw 32 slides in the screw groove 31, sending the extension plate A35 from outside the housing 1 into the housing 1 until the flange is engaged with the pipe.

[0045] Welding begins, and the welding gun on the three-axis welding robot arm 6 works to weld the gap between the flange and the pipe. During the welding process, the flange and the pipe need to be rotated. The roller adjusting cylinder 14 extends, and the rotating roller 13 passes through the flange fixing rope loop 21 and contacts and presses against the flange. The rotating roller 13 rotates under the action of the motor, and the flange rotates, causing the pipe to rotate at the same angular velocity. Then the motor connected to the double-sided limiting bracket 53 is powered on and rotates. At this time, the strong magnetic fixing clamp 54 still maintains the magnetic attraction and fixing effect, so the pipe can rotate. However, the double-sided limiting bracket 53 is limited by the power line connected to the strong magnetic fixing clamp 54. Therefore, after each rotation, the double-sided limiting bracket 53 needs to be reset.

[0046] After welding is completed, the roller adjusting cylinder 14 retracts, the rotating roller 13 disconnects from the flange connection surface, the strong magnetic fixing clamp 54 disconnects from the external power supply, and the transmission cylinder 51 extends to make the strong magnetic fixing clamp 54 detach from the pipeline.

[0047] Release the welded flange assembly. The discharge cylinders A36 and B46 retract simultaneously, and the rotating plates A34 and B44 deflect simultaneously. After the flange assembly loses support on one side, it is sent out from the discharge port 121 on the back of the machine box 1 under the action of gravity.

[0048] The above workflow is controlled by the central controller located below chassis 1.

[0049] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0050] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A flange welding device, characterized in that: The system includes a chassis (1), a flange fixing device (2), a flange transmission structure (3), a pipe fixing device (4), a pipe transmission structure (5), and a three-axis welding robot arm (6). The three-axis welding robot arm (6) is fixedly installed on the top wall of the chassis (1). The flange transmission structure (3) and the pipe transmission structure (5) are respectively located on both sides of the chassis (1). The flange fixing device (2) and the pipe fixing device (4) are respectively installed on the flange transmission structure (3) and the pipe transmission structure (5).

2. The flange welding device according to claim 1, characterized in that: The flange fixing device (2) includes a flange fixing rope loop (21), a loop engaging cylinder (22), and a double-sided connecting bracket (23). The flange fixing rope loop (21) is sleeved and fixed to the flange plate. The telescopic end of the loop engaging cylinder (22) is hinged to one side of the flange fixing rope loop (21). One end of the double-sided connecting bracket (23) is hinged to the other side of the flange fixing rope loop (21), and the other end of the double-sided connecting bracket (23) is hinged to the bottom of the loop engaging cylinder (22). The corner of the double-sided connecting bracket (23) is provided with reinforcing ribs.

3. The flange welding device according to claim 2, characterized in that: The flange transmission structure (3) includes a screw groove (31), a ball screw (32), a fixed plate A (33), a rotating plate A (34), an extension plate A (35), and a discharge cylinder A (36). The screw groove (31) is fixedly installed on the inner wall of the machine housing (1). The ball screw (32) is engaged and rotated in the screw groove (31). The ball screw (32) is provided with a threaded nut. The nut is fixedly connected to the extension plate A (35). The fixed plate A (33) is fixedly connected to the top wall of the extension plate A (35). The rotating plate A (34) is hinged to the fixed plate A (33). A set of double-sided connecting brackets (23) are fixedly provided on the fixed plate A (33) and the rotating plate A (34). The discharge cylinder A (36) is hinged to the side wall of the extension plate A (35).

4. The flange welding device according to claim 3, characterized in that: The pipe fixing device (4) includes a feeding extension plate (41), a feeding lifting plate (42), a fixed plate B (43), a rotating plate B (44), an extension plate B (45), a discharge cylinder B (46), and a connecting support plate (47). The extension plate B (45) is fixedly installed on the inner wall of the machine box (1), and the fixed plate B (43) is fixedly installed on the extension plate B (45). The rotating plate B (44) is hinged to the fixed plate B (43). The feeding lifting plate (42) is provided in two sets, and the two sets of feeding lifting plates (42) are respectively connected by a connecting plate. The plate is fixedly connected to the fixed plate B (43) and the rotating plate B (44). The feeding extension plate (41) is fixedly installed on the machine box (1). The feeding extension plate (41) and the feeding lifting plate (42) are set at the same horizontal height. One end of the connecting support plate (47) is fixedly connected to the rotating plate B (44), and the other end of the connecting support plate (47) is fixedly connected to the feeding lifting plate (42). The telescopic end of the discharge cylinder B (46) is hinged to the connecting support plate (47), and the base of the discharge cylinder B (46) is hinged to the extension plate B (45).

5. The flange welding device according to claim 4, characterized in that: The pipeline transmission structure (5) includes a transmission cylinder (51), a pipeline pushing plate (52), a double-sided limiting bracket (53), and a strong magnetic fixing clamp (54). The base of the transmission cylinder (51) is fixedly connected to the extension plate B (45). The pipeline pushing plate (52) is fixedly mounted on the telescopic end of the transmission cylinder (51). The double-sided limiting bracket (53) is engaged and rotated on the pipeline pushing plate (52). Two sets of strong magnetic fixing clamps (54) are respectively fixedly mounted at both ends of the double-sided limiting bracket (53). The clamping plate of the strong magnetic fixing clamp (54) slides on the fixing clamp. The double-sided limiting bracket (53) is driven by a servo motor.

6. The flange welding device according to claim 5, characterized in that: The chassis (1) is divided into upper and lower layers. The upper layer of the chassis (1) is a welding layer (11) for flanges, and the lower layer of the chassis (1) is a placement layer (12) for components such as controllers. The baffle at the front end of the welding layer (11) is made of a material that can reduce the strong light generated by welding and is visible. The rear end of the welding layer (11) is provided with a discharge port (121). The bottom wall of the discharge port (121) is set as a slope. The two sides of the welding layer (11) are provided with flanges and inlets (122) for feeding pipes.

7. The flange welding device according to claim 6, characterized in that: The pipe push plate (52) engages and slides between two adjacent sets of feed extension plates (41).

8. The flange welding device according to claim 7, characterized in that: The housing (1) is provided with a rotating roller (13) and a roller adjusting cylinder (14). The base of the roller adjusting cylinder (14) is fixedly installed on the inner wall of the housing (1), and the roller adjusting cylinder (14) is tilted towards the center of the flange. The rotating roller (13) is engaged and rotated on the telescopic end of the roller adjusting cylinder (14).

9. The flange welding device according to claim 8, characterized in that: The rotating roller (13) passes through the flange fixing rope loop (21) and contacts the flange that is fixed thereto.

Images