Automatic centering and clamping device for pipe welding

Abstract

The application discloses a kind of automatic centering clamping devices for pipeline welding, and relates to the technical field of pipeline welding.The application includes track base, and automatic group assembly is arranged at the track of the track base, roller assembly is arranged at the track of the track base, C-type positioner fixed seat is slidably installed at the track of the track base, and C-type positioner movable disc is rotatably installed at the side surface of the C-type positioner fixed seat.The distance between the two claw blocks can be adapted to fix pipes of different diameters by the cooperation of electric push rod, support frame, motor, bidirectional threaded rod, threaded sleeve and claw block, thereby avoiding the problem of reduced work efficiency caused by the inability of claw block to fix the pipe when the pipe is too small or the difficulty of claw block in stably fixing the pipe when the pipe is too large, as the claw block cannot be adjusted and switched according to the required pipe diameter.

Description

Technical Field

[0001] This invention relates to the field of pipeline welding technology, specifically to an automatic centering and clamping device for pipeline welding. Background Technology

[0002] Automatic centering and clamping devices for pipeline welding are equipment used in the welding process. They are mainly used to automatically position and clamp the ends of pipes to ensure the accuracy and consistency of the welding process. The device achieves automated operation through hydraulic or electric systems and has efficient and fast centering functions. It can effectively reduce manual operation, improve welding quality, and reduce the risk of welding deformation. It is widely used in pipeline welding operations in the petroleum, chemical, and construction industries to improve production efficiency and safety.

[0003] Chinese patent publication number CN212398692U discloses an auxiliary pipeline welding device for water conservancy projects, including a placement frame. A connecting groove is formed in the middle of the inner wall of the placement frame, and a clamping device is installed inside the connecting groove. Auxiliary devices are fixedly connected to the middle of the left and right sides of the upper surface of the placement frame. This auxiliary pipeline welding device for water conservancy projects, by rotating the operating handle, drives the clamping rod to rotate, causing the clamping plate to move inward to clamp the pipeline. Then, the push rod motor is activated to connect the inner ends of the pipelines together for welding, thereby enhancing the clamping effect of the device and improving the work efficiency of the welders. By opening the latch and manipulating the top half-ring to rotate upward along the rotating axis to open it, the pipeline passes through the inside of the half-ring and the latch is closed, thus avoiding the situation where the pipeline position shifts during welding, affecting the welding quality.

[0004] However, the current centering clamping device has the following problems: the size of the clamps is fixed when centering the pipe. Therefore, when the pipe is too small, the clamps will not be able to fix the pipe, and when the pipe is too large, the clamps will have difficulty stabilizing the pipe. Since the clamps cannot be adjusted and switched according to the required pipe diameter, the work efficiency will be reduced. Therefore, we propose an automatic centering clamping device for pipe welding. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic centering and clamping device for pipe welding, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic centering and clamping device for pipe welding, comprising a track base, an automatic alignment component and a roller assembly, a C-type positioner fixing seat slidably mounted on the track base, a C-type positioner motor rotatingly mounted on the side of the C-type positioner fixing seat, three electric push rods fixed on the side of the C-type positioner motor, a support frame fixed to the telescopic end of each of the three electric push rods, a motor fixed to the side of each of the three support frames, a bidirectional threaded rod fixed to the output shaft of the motor, two threaded sleeves threadedly connected to the circumferential surfaces of the bidirectional threaded rod with opposite thread directions, and a claw block fixed to the top of each of the two threaded sleeves.

[0007] According to the above technical solution, the inner wall of the C-type positioner fixing base is provided with a rotary drive component, the inner wall of the C-type positioner fixing base is provided with a lifting cylinder, the inner wall of the C-type positioner fixing base is provided with a two-way rotary reducer, the inner wall of the C-type positioner drive plate is provided with a large gear plate, the interior of the C-type positioner drive plate is provided with a universal joint, the interior of the C-type positioner drive plate is provided with a coupling, the interior of the C-type positioner drive plate is provided with a drive shaft, the interior of the C-type positioner drive plate is provided with a bevel gear, and the interior of the C-type positioner drive plate is provided with a trapezoidal lead screw.

[0008] According to the above technical solution, a small block is fixed to the side of the threaded sleeve, an elastic telescopic rod is fixed to the inner wall of the small block, a semi-circular block is fixed to the bottom of the telescopic end of the elastic telescopic rod, and a multi-arc groove positioning block is fixed to the side of the support frame, with the arc groove of the multi-arc groove positioning block contacting the arc surface of the semi-circular block.

[0009] According to the above technical solution, the C-type displacement motor is provided with a pressure-bearing device on its side. The pressure-bearing device includes two elastic telescopic rods. Each of the telescopic ends of the two elastic telescopic rods is fixed with a pressure-bearing head. Each of the telescopic ends of the two elastic telescopic rods is fixed with a connecting rod on its outer wall. An L-shaped telescopic rod is fixed to the end of the connecting rod away from the elastic telescopic rod. A convex block is fixed to the side of the L-shaped telescopic rod.

[0010] According to the above technical solution, the outer wall of the telescopic end of the two L-shaped telescopic rods is fixed with the same bidirectional telescopic rod.

[0011] According to the above technical solution, the convex block is in contact with the multi-arc groove positioning block.

[0012] According to the above technical solution, the fixed end of the electric push rod is provided with a positioning device, the positioning device includes an L-shaped rod, one end of the L-shaped rod is fixed to the outer wall of the fixed end of the electric push rod, the other end of the L-shaped rod is fixed with a round block, a fixing block is fixed to the side of the C-type positioner fixing seat, a movable semi-groove block is slidably installed on the side of the C-type positioner fixing seat, a spring is provided between the movable semi-groove block and the fixing block, and arc blocks are fixed on both sides of the movable semi-groove block.

[0013] According to the above technical solution, the arc block is located on the movement trajectory of the circular block, and the slot of the moving half-groove block is located on the movement trajectory of the circular block.

[0014] This invention provides an automatic centering and clamping device for pipe welding. It has the following advantages: (1) The present invention uses the cooperation of electric push rod, support frame, motor, bidirectional threaded rod, threaded sleeve and claw block to make the distance between the two claw blocks adaptable to fix pipes of different diameters, thereby avoiding the problem that when the pipe is too small, the claw block will not be able to fix the pipe, and when the pipe is too large, the claw block will have difficulty stabilizing the pipe. Since the claw block cannot be adjusted and switched according to the required pipe diameter, the work efficiency will be reduced. At the same time, through the cooperation of threaded sleeve, claw block, small block, elastic telescopic rod, semi-arc block and multi-arc groove positioning block, when the claw block moves to the size of the pipe diameter, the semi-arc block will stop in the groove of the corresponding multi-arc groove positioning block. At this time, the other two pairs of threaded sleeves and claw blocks are adjusted according to the position of the semi-arc block and the groove of the multi-arc groove positioning block, thereby ensuring that the distance of the three pairs of claw blocks is the same, avoiding the problem that the distance of the three pairs of claw blocks is deviated, which leads to the inability to stably clamp the pipe.

[0015] (2) By setting up a pressure-bearing device, the convex block will stay next to the slot corresponding to the multi-arc groove positioning block in cooperation with the second elastic telescopic rod, the pressure-bearing head, the connecting rod, the L-shaped telescopic rod, and the convex block. This allows the claw block and the threaded sleeve to play a positioning role during adjustment, thereby avoiding the problem of the adjustment angle of the claw block and the threaded sleeve being too large or too small. At the same time, with the cooperation of the bidirectional telescopic rod, the second elastic telescopic rod, the pressure-bearing head, and the L-shaped telescopic rod, the telescopic end of the L-shaped telescopic rod on one side will drive the L-shaped telescopic rod, the second elastic telescopic rod, and the pressure-bearing head on the other side to move through the bidirectional telescopic rod. This avoids the problem that the pressure-bearing head on one side is pressed down while the pressure-bearing head on the other side does not move, and the immobile pressure-bearing head will block the pipeline from moving to the center position of the C-type displacement motor.

[0016] (3) By setting up a positioning device, with the cooperation of L-shaped rod, round block, fixed block, movable half-groove block, spring and arc block, when the round block moves into the groove of the movable half-groove block, the spring will reset the movable half-groove block and arc block through its own elastic force, thereby achieving the final positioning of the round block, thus ensuring that the notch of the C-type displacement motor is directly above. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the entire invention; Figure 2 This is a schematic diagram of the structure at the C-type displacement motor disk of the present invention; Figure 3 This is a schematic diagram of the structure of the C-type positioner fixing seat of the present invention; Figure 4 This is a schematic diagram of the structure of the electric actuator of the present invention; Figure 5 This is a schematic diagram of two structural features of the elastic telescopic rod of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the structure at point A in the middle; Figure 7 This is a schematic diagram of the positioning device of the present invention.

[0018] In the diagram: 1. Track base; 2. Automatic assembly assembly; 3. Roller assembly; 4. C-type positioner mounting base; 41. Rotary drive component; 42. Lifting cylinder; 43. One-to-two angle reducer; 5. C-type positioner drive plate; 51. Large gear plate; 52. Universal joint; 53. Coupling; 54. Drive shaft; 55. Bevel gear; 56. Trapezoidal lead screw; 6. Pressure-bearing device; 61. Elastic telescopic rod II; 62. Pressure-bearing head; 63. Connecting rod 64. L-shaped telescopic rod; 65. Convex block; 66. Bidirectional telescopic rod; 7. Positioning device; 71. L-shaped rod; 72. Round block; 73. Fixed block; 74. Moving semi-groove block; 75. Spring; 76. Arc block; 8. Electric push rod; 9. Support frame; 10. Motor; 11. Bidirectional threaded rod; 12. Threaded sleeve; 13. Claw block; 14. Small block; 15. Elastic telescopic rod one; 16. Semi-arc block; 17. Multiple arc groove positioning block. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-7One embodiment of the present invention is: an automatic centering and clamping device for pipe welding, comprising a track base 1, an automatic alignment component 2 (existing technology, not described in detail) provided at the track of the track base 1, a roller assembly 3 provided at the track of the track base 1, a C-type positioner fixing seat 4 (existing technology, not described in detail) rotatably mounted on the side of the C-type positioner fixing seat 4, a C-type positioner motor 5 (existing technology, not described in detail), and three electric... The three electric push rods 8 are each fixed to a support frame 9 at their telescopic ends. A motor 10 is fixed to the side of each of the three support frames 9. A bidirectional threaded rod 11 is fixed to the output shaft of the motor 10. Two threaded sleeves 12 are threaded onto the circumferential surfaces of the bidirectional threaded rod 11 with opposite thread directions. A claw block 13 is fixed to the top of each of the two threaded sleeves 12. A rotary drive component 41 is provided on the inner wall of the C-type positioner mounting base 4 (this is existing technology and will not be elaborated further). A lifting cylinder 42 is provided on the inner wall of the C-type positioner mounting base 4. The inner wall of the fixed seat 4 is equipped with a two-way rotary reducer 43, which is prior art and will not be elaborated further. The inner wall of the C-type shifting drive plate 5 is equipped with a large gear plate 51, which is prior art and will not be elaborated further. The C-type shifting drive plate 5 has a universal joint 52 inside, which is prior art and will not be elaborated further. The C-type shifting drive plate 5 has a coupling 53 inside, which is prior art and will not be elaborated further. The C-type shifting drive plate 5 has a drive shaft 54 ​​inside, which is prior art and will not be elaborated further. The C-type shifting drive plate 5 has a bevel gear 5 inside. 5. This is existing technology and will not be elaborated further. The C-type displacement motor 5 is equipped with a trapezoidal lead screw 56, which is existing technology and will not be elaborated further. Through the above structure, the distance between the two claw blocks 13 can be adapted to fix pipes of different diameters, thereby avoiding the problem that when the pipe is too small, the claw block 13 will not be able to fix the pipe, and when the pipe is too large, the claw block 13 will have difficulty stabilizing the pipe. Since the claw block 13 cannot adjust and switch with the required pipe diameter, the work efficiency will be reduced.

[0021] A small block 14 is fixed to the side of the threaded sleeve 12. An elastic telescopic rod 15 is fixed to the inner wall of the small block 14. A semi-circular block 16 is fixed to the bottom of the telescopic end of the elastic telescopic rod 15. A multi-arc groove positioning block 17 is fixed to the side of the support frame 9. The arc groove of the multi-arc groove positioning block 17 contacts the arc surface of the semi-circular block 16. With the above structure, when the claw block 13 moves to the size of the pipe diameter, the semi-circular block 16 will stop in the groove of the corresponding multi-arc groove positioning block 17. At this time, the other two pairs of threaded sleeves 12 and claw blocks 13 are adjusted according to the position of the semi-circular block 16 and the groove of the multi-arc groove positioning block 17 to ensure that the distance of the three pairs of claw blocks 13 is the same, avoiding the problem that the distance of the three pairs of claw blocks 13 is deviated, which would lead to the inability to stably clamp the pipe.

[0022] The C-type shifting motor 5 is provided with a pressure-bearing device 6 on its side. The pressure-bearing device 6 includes two elastic telescopic rods 61. Each of the telescopic ends of the two elastic telescopic rods 61 is fixed with a pressure head 62. Each of the telescopic ends of the two elastic telescopic rods 61 is fixed with a connecting rod 63. An L-shaped telescopic rod 64 is fixed to the end of the connecting rod 63 away from the elastic telescopic rods 61. A convex block 65 is fixed to the side of the L-shaped telescopic rod 64. The convex block 65 contacts the multi-arc groove positioning block 17. With the above structure, the convex block 65 will stay next to the corresponding groove of the multi-arc groove positioning block 17, so that the claw block 13 and the threaded sleeve 12 can play a positioning role during adjustment, thereby avoiding the problem of the adjustment angle of the claw block 13 and the threaded sleeve 12 being too large or too small.

[0023] The outer walls of the telescopic ends of the two L-shaped telescopic rods 64 are fixed with the same bidirectional telescopic rod 66. With the above structure, the telescopic end of one side of the L-shaped telescopic rod 64 will drive the other side of the L-shaped telescopic rod 64, the elastic telescopic rod 61, and the pressure head 62 to move through the bidirectional telescopic rod 66. This avoids the problem that one side of the pressure head 62 is suppressed while the other side of the pressure head 62 does not move. The immobile pressure head 62 will prevent the pipeline from moving to the center position of the C-type displacement motor 5.

[0024] In use, when pipes of different diameters need to be fixed using the C-type positioning motor 5, the operator starts the motor 10. The output shaft of the motor 10 causes the bidirectional threaded rod 11 to rotate. The rotation of the bidirectional threaded rod 11 drives the two threaded sleeves 12 to move. The movement of the two threaded sleeves 12 drives their respective claw blocks 13 to move, thus allowing the distance between the two claw blocks 13 to adapt to fixing pipes of different diameters. This avoids the situation where the claw blocks 13 cannot fix the pipe when it is too small, or the claw blocks 13 cannot secure the pipe when it is too large. Because the claw blocks 13 cannot be adjusted and switched according to the required pipe diameter, this leads to... This leads to reduced work efficiency. The movement of one pair of threaded sleeves 12 and claw blocks 13 causes the small block 14 to move, which in turn causes the elastic telescopic rod 15 to move. The movement of the elastic telescopic rod 15 then causes the semi-arc block 16 to move. When the claw block 13 moves to the appropriate pipe diameter, the semi-arc block 16 stops in the slot of the corresponding multi-arc groove positioning block 17. At this point, the other two pairs of threaded sleeves 12 and claw blocks 13 are adjusted according to the positions of the semi-arc block 16 and the slots of the multi-arc groove positioning block 17 to ensure that the distance between the three pairs of claw blocks 13 is the same, thus avoiding the problem of unstable clamping of the pipe due to deviation in the distance between the three pairs of claw blocks 13.

[0025] When the pipe is placed on the C-type displacement motorized disc 5, the pipe will compress the pressure head 62. The compression of the pressure head 62 will compress the telescopic end of the elastic telescopic rod 61. When the telescopic end of the elastic telescopic rod 61 is compressed and moves, it will drive the L-shaped telescopic rod 64 to move. When the L-shaped telescopic rod 64 moves, it will simultaneously compress the telescopic end of the body. The movement of the L-shaped telescopic rod 64 will drive the convex block 65 to move along the side of the multi-arc groove positioning block 17. When the pipe is in the middle of the C-type displacement motorized disc 5, it will no longer compress the pressure head 62. Therefore, the convex block 65 will stay next to the corresponding groove of the multi-arc groove positioning block 17, so that the claw block 13 and the threaded sleeve 12 can play a positioning role during adjustment, thereby avoiding the adjustment of the claw block 13 and the threaded sleeve 12. The problem of excessively large or small joint angle: When the pipeline is biased to one side in the C-type displacement manipulator 5, the pipeline will press down on the pressure head 62 on that side. The pressure head 62 on that side will be compressed and will compress the telescopic end of the corresponding elastic telescopic rod 61. When the telescopic end of the elastic telescopic rod 61 is compressed and moves, it will drive the corresponding L-shaped telescopic rod 64 to move. When the L-shaped telescopic rod 64 on that side moves, it will also compress its telescopic end. The telescopic end of the L-shaped telescopic rod 64 on that side will drive the L-shaped telescopic rod 64, elastic telescopic rod 61, and pressure head 62 on the other side to move through the bidirectional telescopic rod 66. This avoids the problem that one pressure head 62 is pressed down while the other pressure head 62 does not move. The stationary pressure head 62 will prevent the pipeline from moving to the center position of the C-type displacement manipulator 5.

[0026] Please see Figures 1-7 Based on the above embodiments, in another embodiment of the present invention, a positioning device 7 is provided at the fixed end of the electric push rod 8. The positioning device 7 includes an L-shaped rod 71. One end of the L-shaped rod 71 is fixed to the outer wall of the fixed end of the electric push rod 8, and a round block 72 is fixed at the other end of the L-shaped rod 71. A fixing block 73 is fixed on the side of the C-type positioner fixing seat 4. A movable half-groove block 74 is slidably installed on the side of the C-type positioner fixing seat 4. A spring 75 is provided between the movable half-groove block 74 and the fixing block 73. Arc blocks 76 are fixed on both sides of the movable half-groove block 74. The arc blocks 76 are located on the movement trajectory of the round block 72. The groove of the movable half-groove block 74 is located on the movement trajectory of the round block 72. With the above structure, the spring 75 will reset the movable half-groove block 74 and the arc blocks 76 through its own elastic force, thereby achieving the final positioning of the round block 72, thus ensuring that the notch of the C-type positioner motor 5 is directly above.

[0027] In use, after the C-type shifting motor 5 is used, it will drive the electric push rod 8 to move. The movement of the electric push rod 8 will drive the L-shaped rod 71 to move. The movement of the L-shaped rod 71 will drive the circular block 72 to move. The movement of the circular block 72 will abut against the arc block 76, thereby causing the arc block 76 to drive the moving half-groove block 74 to move downward and compress the spring 75. When the circular block 72 moves into the groove of the moving half-groove block 74, the spring 75 will reset the moving half-groove block 74 and the arc block 76 through its own elasticity, thereby achieving the final positioning of the circular block 72 and ensuring that the notch of the C-type shifting motor 5 is directly above.

[0028] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An automatic alignment and clamping device for pipe welding, comprising a track base (1), an automatic alignment assembly (2) provided at the track of the track base (1), and a roller assembly (3) provided at the track of the track base (1), characterized in that: A C-type positioner mounting base (4) is slidably installed on the track of the track base (1). A C-type positioner motor plate (5) is rotatably installed on the side of the C-type positioner mounting base (4). Three electric push rods (8) are fixed on the side of the C-type positioner motor plate (5). Support frames (9) are fixed to the telescopic ends of the three electric push rods (8). Motors (10) are fixed to the sides of the three support frames (9). A bidirectional threaded rod (11) is fixed to the output shaft of the motor (10). Two threaded sleeves (12) are threaded on the circumferential surfaces of the bidirectional threaded rod (11) with opposite thread directions. Claw blocks (13) are fixed to the top of the two threaded sleeves (12).

2. The automatic centering and clamping device for pipe welding according to claim 1, characterized in that: The inner wall of the C-type positioner mounting base (4) is provided with a rotary drive component (41), the inner wall of the C-type positioner mounting base (4) is provided with a lifting cylinder (42), the inner wall of the C-type positioner mounting base (4) is provided with a two-way rotary reducer (43), the inner wall of the C-type positioner drive plate (5) is provided with a large gear plate (51), the interior of the C-type positioner drive plate (5) is provided with a universal joint (52), the interior of the C-type positioner drive plate (5) is provided with a coupling (53), the interior of the C-type positioner drive plate (5) is provided with a drive shaft (54), the interior of the C-type positioner drive plate (5) is provided with a bevel gear (55), and the interior of the C-type positioner drive plate (5) is provided with a trapezoidal lead screw (56).

3. The automatic centering and clamping device for pipe welding according to claim 2, characterized in that: A small block (14) is fixed to the side of the threaded sleeve (12), and an elastic telescopic rod (15) is fixed to the inner wall of the small block (14). A semi-circular block (16) is fixed to the bottom of the telescopic end of the elastic telescopic rod (15). A multi-arc groove positioning block (17) is fixed to the side of the support frame (9). The arc groove of the multi-arc groove positioning block (17) is in contact with the arc surface of the semi-circular block (16).

4. The automatic centering and clamping device for pipe welding according to claim 3, characterized in that: The C-type displacement motor disk (5) is provided with a pressure device (6) on its side. The pressure device (6) includes two elastic telescopic rods (61). The telescopic ends of the two elastic telescopic rods (61) are fixed with pressure heads (62). The outer walls of the telescopic ends of the two elastic telescopic rods (61) are fixed with connecting rods (63). An L-shaped telescopic rod (64) is fixed at the end of the connecting rod (63) away from the elastic telescopic rods (61). A convex block (65) is fixed on the side of the L-shaped telescopic rod (64).

5. The automatic centering and clamping device for pipe welding according to claim 4, characterized in that: The outer walls of the telescopic ends of the two L-shaped telescopic rods (64) are fixed with the same bidirectional telescopic rod (66).

6. The automatic centering and clamping device for pipe welding according to claim 5, characterized in that: The convex block (65) is in contact with the multi-arc groove positioning block (17).

7. The automatic centering and clamping device for pipe welding according to claim 6, characterized in that: The fixed end of the electric push rod (8) is provided with a positioning device (7). The positioning device (7) includes an L-shaped rod (71). One end of the L-shaped rod (71) is fixed to the outer wall of the fixed end of the electric push rod (8). The other end of the L-shaped rod (71) is fixed with a round block (72). The side of the C-type positioner fixing seat (4) is fixed with a fixing block (73). The side of the C-type positioner fixing seat (4) is slidably installed with a movable half-groove block (74). A spring (75) is provided between the movable half-groove block (74) and the fixing block (73). Arc blocks (76) are fixed on both sides of the movable half-groove block (74).

8. The automatic centering and clamping device for pipe welding according to claim 7, characterized in that: The arc block (76) is located on the movement trajectory of the circular block (72), and the slot of the movable half-groove block (74) is located on the movement trajectory of the circular block (72).

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