Pipe clamping, centering and welding device

Abstract

The utility model discloses a pipe clamping, centering and welding device, which is applied to the technical field of pipe welding devices, and is characterized by comprising a welding seat, a first three-jaw chuck and a second three-jaw chuck which are used for clamping a first pipe and a second pipe are slidably connected to the two ends of the welding base correspondingly based on sliding assemblies, the first three-jaw chuck and the second three-jaw chuck are coaxially arranged, and a fixing base is fixedly connected to the middle of the welding base. A flange positioning assembly used for positioning a flange plate is fixedly connected to the middle of the fixing base, and pipe positioning and fixing assemblies used for positioning and clamping the first pipe and the second pipe are fixedly arranged at the positions, at the two ends of the flange positioning assembly, of the fixing base. The welding device has the technical effects of simple structure and high welding precision.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe welding devices, in particular to a pipe clamping and centering welding device. Background Art

[0002] In the welding process, it is often necessary to Figure 1 The two pipes of different diameters shown are coaxially fixed together through a flange to meet the conduction requirements. The conventional welding method can only open a step positioning hole of the corresponding diameter on the flange. The pipe is positioned in the step positioning hole during welding. However, on the one hand, processing the step positioning hole on the flange increases the processing cost; on the other hand, in order to facilitate the placement of the pipe in the step positioning hole, the diameter of the step positioning hole needs to be slightly larger than the diameter of the pipe. This results in a certain gap between the pipes after they are placed in the step positioning hole, which leads to poor axiality of the pipe connection, which needs to be improved. Utility Model Content

[0003] The utility model aims to provide a pipe clamping and centering welding device, which has the advantages of simple structure and high welding precision.

[0004] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a pipe clamping and centering welding device, including a welding seat; the two ends of the welding seat are slidably connected with a first three-jaw chuck and a second three-jaw chuck for clamping a first pipe and a second pipe based on a sliding component, the first three-jaw chuck and the second three-jaw chuck are coaxially arranged, the middle position of the welding seat is fixedly connected with a fixed seat, the middle position of the fixed seat is fixedly connected with a flange positioning component for positioning the flange, and the fixed seat is fixedly provided with pipe positioning and fixing components for positioning and clamping the first pipe and the second pipe at both ends of the flange positioning component.

[0005] The utility model is further configured as follows: the sliding assembly includes a sliding seat slidably connected to the welding seat and used for fixedly mounting the first three-jaw chuck or the second three-jaw chuck, the welding seat is fixedly connected to a slide rail, the sliding seat is fixedly connected to a slider slidably connected to the slide rail, and the welding seat is fixedly provided with a telescopic sliding assembly for driving the sliding seat to slide.

[0006] The utility model is further configured as follows: the telescopic sliding assembly comprises a mounting seat fixedly connected to the welding seat and a telescopic cylinder fixedly connected to the mounting seat, and the telescopic end of the telescopic cylinder is fixedly connected to the sliding seat.

[0007] The utility model is further configured as follows: the flange positioning assembly includes a flange positioning plate fixedly connected to the fixing seat, the flange positioning plate is provided with a flange positioning groove for positioning the flange plate, and the flange positioning groove is fixedly provided with at least two positioning pins that cooperate with the positioning holes on the flange plate.

[0008] The utility model is further configured as follows: the pipe positioning and fixing assembly includes a pipe positioning plate fixedly connected to both ends of the flange positioning plate at intervals, the pipe positioning plate is provided with a first pipe positioning groove for positioning the first pipe or the second pipe, and the pipe positioning plate is provided with a clamping assembly for clamping and fixing the first pipe or the second pipe in the first pipe positioning groove.

[0009] The utility model is further configured as follows: the clamping assembly includes a pipe clamping plate rotatably connected to the pipe positioning plate, the pipe clamping plate is provided with a second pipe positioning groove that cooperates with the first pipe positioning groove, and the flange positioning plate and the pipe clamping plate are fixed based on a lock connection.

[0010] The utility model is further configured as follows: the fixing seat and the mounting seat can be detachably fixedly connected to the welding seat.

[0011] In summary, the utility model has the following beneficial effects:

[0012] 1. A first three-jaw chuck and a second three-jaw chuck coaxially arranged are slidably connected based on a sliding assembly at both ends of the welding seat, a flange positioning assembly is arranged in the middle of the welding seat, and a pipe positioning assembly is arranged at both ends of the flange positioning assembly, and the first three-jaw chuck and the second three-jaw chuck are used to clamp one end of the first pipe and the second pipe respectively. The pipe positioning assembly opens a first pipe positioning groove on the pipe positioning plate, and sets a clamping assembly to clamp and fix the first pipe and the second pipe in the first pipe positioning groove, and the other ends of the first pipe and the second pipe are positioned and supported by the pipe positioning assembly, so that the first pipe and the second pipe are fixed to the first pipe and the second pipe. The axis lines of the two pipes are aligned and overlapped, and at the same time, the flange positioning assembly opens a flange positioning groove on the flange positioning plate and sets a positioning pin on the flange positioning groove, and positions the flange through the flange positioning groove and the positioning pin so that the flange can overlap with the axis lines of the first pipe and the second pipe. When the flange, the first pipe and the second pipe are positioned, the telescopic cylinder of the sliding assembly drives the sliding seat to slide on the slide rail so that the ends of the first pipe and the second pipe abut against the flange, and finally welding is performed, so that the axis of the connection between the pipes can be guaranteed without machining a step positioning hole on the flange, thereby reducing the processing cost and ensuring the processing accuracy;

[0013] 2. Both the fixed seat and the mounting seat can be detachably fixedly connected to the welding seat, so as to facilitate the adaptation to the processing requirements of different parts and improve the adaptation range. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the structure of the processed pipe in this embodiment;

[0015] Figure 2 is a schematic diagram of the overall structure of this embodiment in a welding state;

[0016] Figure 3 It is a schematic diagram of the overall structure of this embodiment;

[0017] Figure 4 yes Figure 3 An enlarged schematic diagram of part A.

[0018] Figure numerals: 1. welding seat; 2. sliding assembly; 21. sliding seat; 22. slide rail; 23. slider; 24. telescopic sliding assembly; 25. mounting seat; 26. telescopic cylinder; 3. first three-jaw chuck; 4. second three-jaw chuck; 5. fixed seat; 6. flange positioning assembly; 61. flange positioning plate; 62. flange positioning groove; 63. positioning pin; 7. pipe positioning and fixing assembly; 71. pipe positioning plate; 72. first pipe positioning groove; 73. clamping assembly; 731. pipe clamping plate; 732. second pipe positioning groove; 733. lock; 8. first pipe; 9. second pipe; 10. flange. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] Example:

[0021] refer to Figure 1 The parts to be welded include a flange 10 and a first pipe 8 and a second pipe 9 coaxially welded and fixed at both ends of the flange 10. Four positioning holes are opened on the flange 10 along the circumferential direction.

[0022] refer to Figures 2 to 4A pipe clamping and centering welding device comprises a horizontally arranged welding seat 1, and two ends of the welding seat 1 are respectively slidably connected with a first three-jaw chuck 3 and a second three-jaw chuck 4 for clamping a first pipe 8 and a second pipe 9 based on a sliding assembly 2, and the first three-jaw chuck 3 and the second three-jaw chuck 4 are coaxially arranged, and a fixed seat 5 is fixedly connected at the middle position of the welding seat 1, and a flange positioning assembly 6 for positioning a flange 10 is fixedly connected at the middle position of the fixed seat 5, and the fixed seat 5 is fixedly provided with a flange positioning assembly 6 for positioning and clamping the first pipe at both ends. The pipe positioning and fixing assembly 7 of the first pipe 8 and the second pipe 9 clamps one end of the first pipe 8 and the second pipe 9 respectively through the first three-jaw chuck 3 and the second three-jaw chuck 4, and positions and supports the other ends of the first pipe 8 and the second pipe 9 through the pipe positioning assembly, so that the axis lines of the first pipe 8 and the second pipe 9 are aligned and overlapped, and the flange 10 is positioned through the flange positioning assembly 6 so that the axis lines of the flange 10 and the first pipe 8 and the second pipe 9 are on the same axis line, thereby ensuring the accuracy of welding.

[0023] refer to Figure 2 Specifically, the sliding assembly 2 includes a sliding seat 21 slidably connected to the welding seat 1 for fixedly installing the first three-jaw chuck 3 or the second three-jaw chuck 4, a slide rail 22 is fixedly connected to the welding seat 1, a slider 23 slidably connected to the slide rail 22 is fixedly connected to the sliding seat 21, and a telescopic sliding assembly 24 for driving the sliding seat 21 to slide is fixedly provided on the welding seat 1. The telescopic sliding assembly 24 includes a mounting seat 25 fixedly connected to the welding seat 1 and a telescopic cylinder 26 fixedly connected to the mounting seat 25, and the telescopic end of the telescopic cylinder 26 is fixedly connected to the sliding seat 21. When the two ends of the first pipe 8 are respectively clamped and positioned by the three-jaw chuck and positioned and clamped by the pipe positioning and fixing assembly 7, the telescopic cylinder 26 drives the sliding seat 21 to slide on the slide rail 22 so that the end of the first pipe 8 abuts against the flange 10, and the second pipe 9 is the same. When the first pipe 8 and the second pipe 9 are both abutted against the flange 10, welding can be carried out. The fixing seat 5 and the mounting seat 25 can be detachably fixedly connected to the welding seat 1. When the specifications of the welded parts need to be changed, it is only necessary to detach the fixing seat 5 and the mounting seat 25 and replace the corresponding clamps, thereby improving the adaptability range.

[0024] refer to Figure 3 to Figure 4 Specifically, the flange positioning assembly 6 includes a flange positioning plate 61 fixedly connected to the fixing seat 5, a flange positioning groove 62 for positioning the flange 10 is opened on the flange positioning plate 61, and at least two positioning pins 63 that cooperate with the positioning holes on the flange 10 are fixedly provided on the flange positioning groove 62. The flange 10 can be positioned and fixed by placing the flange 10 in the flange positioning groove 62 and inserting the positioning pins 63 into the positioning holes on the flange 10.

[0025] refer to Figure 3 to Figure 4 Specifically, the pipe positioning and fixing assembly 7 includes a pipe positioning plate 71 fixedly connected at intervals at both ends of the flange positioning plate 61, a first pipe positioning groove 72 for positioning the first pipe 8 or the second pipe 9 is provided on the pipe positioning plate 71, a clamping assembly 73 for clamping and fixing the first pipe 8 or the second pipe 9 in the first pipe positioning groove 72 is provided on the pipe positioning plate 71, and the clamping assembly 73 includes a pipe clamping plate 731 rotatably connected to the pipe positioning plate 71, and a second pipe positioning groove 732 cooperating with the first pipe positioning groove 72 is provided on the pipe clamping plate 731. The blue positioning plate 61 and the tube clamping plate 731 are connected and fixed based on the lock 733. When the first tube 8 or the second tube 9 is placed in the first tube positioning groove 72, the tube clamping plate 731 is rotated to clamp the first tube 8 and the second tube 9 in the first tube positioning groove 72 and the second tube positioning groove 732. The first tube positioning groove 72 and the second tube positioning groove 732 are used to position and support the end of the first tube 8 or the second tube 9. After positioning, the tube clamping plate 731 is locked and fixed to the positioning plate through the lock 733.

[0026] Brief description of the usage process: The first three-jaw chuck 3 and the second three-jaw chuck 4 are used to clamp one end of the first pipe 8 and the second pipe 9 respectively, and the pipe positioning assembly is used to position and support the other end of the first pipe 8 and the second pipe 9, so that the axis lines of the first pipe 8 and the second pipe 9 are aligned and coincident. At the same time, the flange positioning assembly 6 opens a flange positioning groove 62 on the flange positioning plate 61 and sets a positioning pin 63 on the flange positioning groove 62. The flange 10 is positioned through the flange positioning groove 62 and the positioning pin 63 so that the flange 10 can coincide with the axis lines of the first pipe 8 and the second pipe 9. After the flange 10, the first pipe 8 and the second pipe 9 are positioned, the telescopic cylinder 26 of the sliding assembly 2 drives the sliding seat 21 to slide on the slide rail 22 so that the ends of the first pipe 8 and the second pipe 9 abut against the flange 10, and finally welding is performed.

[0027] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A pipe clamping and centering welding device, comprising a welding seat (1); characterized in that: The two ends of the welding seat (1) are slidably connected with a first three-jaw chuck (3) and a second three-jaw chuck (4) for clamping a first pipe (8) and a second pipe (9) based on a sliding assembly (2); the first three-jaw chuck (3) and the second three-jaw chuck (4) are coaxially arranged; a fixing seat (5) is fixedly connected at the middle position of the welding seat (1); a flange positioning assembly (6) for positioning a flange (10) is fixedly connected at the middle position of the fixing seat (5); and pipe positioning fixing assemblies (7) for positioning and clamping the first pipe (8) and the second pipe (9) are fixedly provided at both ends of the flange positioning assembly (6).

2. A pipe clamping and centering welding device according to claim 1, characterized in that: The sliding assembly (2) comprises a sliding seat (21) slidably connected to the welding seat (1) and used for fixedly mounting the first three-jaw chuck (3) or the second three-jaw chuck (4); a sliding rail (22) is fixedly connected to the welding seat (1); a sliding block (23) slidably connected to the sliding rail (22) is fixedly connected to the sliding seat (21); and a telescopic sliding assembly (24) is fixedly provided on the welding seat (1) for driving the sliding seat (21) to slide.

3. A pipe clamping and centering welding device according to claim 2, characterized in that: The telescopic sliding assembly (24) comprises a mounting seat (25) fixedly connected to the welding seat (1) and a telescopic cylinder (26) fixedly connected to the mounting seat (25), wherein the telescopic end of the telescopic cylinder (26) is fixedly connected to the sliding seat (21).

4. A pipe clamping and centering welding device according to claim 1, characterized in that: The flange positioning assembly (6) comprises a flange positioning plate (61) fixedly connected to the fixing seat (5), the flange positioning plate (61) being provided with a flange positioning groove (62) for positioning the flange (10), and the flange positioning groove (62) being fixedly provided with at least two positioning pins (63) which cooperate with positioning holes on the flange (10).

5. A pipe clamping and centering welding device according to claim 4, characterized in that: The pipe positioning and fixing assembly (7) comprises a pipe positioning plate (71) fixedly connected to both ends of the flange positioning plate (61) at intervals, the pipe positioning plate (71) being provided with a first pipe positioning groove (72) for positioning the first pipe (8) or the second pipe (9), and the pipe positioning plate (71) being provided with a clamping assembly (73) for clamping and fixing the first pipe (8) or the second pipe (9) in the first pipe positioning groove (72).

6. A pipe clamping and centering welding device according to claim 5, characterized in that: The clamping assembly (73) includes a pipe clamping plate (731) rotatably connected to the pipe positioning plate (71), and a second pipe positioning groove (732) matching the first pipe positioning groove (72) is provided on the pipe clamping plate (731). The flange positioning plate (61) and the pipe clamping plate (731) are connected and fixed based on a lock (733).

7. The pipe clamping and centering welding device according to claim 3 is characterized in that: The fixing seat (5) and the mounting seat (25) can both be detachably fixedly connected to the welding seat (1).

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