Positioning device and high-frequency pipe welding clamp

Abstract

This utility model relates to the field of welding fixture technology and discloses a positioning device, including a partition plate installed in the middle of a base plate. Two trapezoidal plates are fixedly connected to both ends of the upper surface of the base plate. The two trapezoidal plates at the same end of the base plate form a group, and a welding joint is left between the two groups of trapezoidal plates. The partition plate is located within the welding joint. Support components are connected to the side walls of the two trapezoidal plates on the same side of the base plate. Adjustment components are connected to the upper ends of the two support components, and pressure components are connected to the upper ends of the two adjustment components. The two pressure components are located above the two groups of trapezoidal plates respectively. A high-frequency welded pipe welding fixture includes the above-mentioned positioning device and a base plate. This positioning device and high-frequency welded pipe welding fixture, through the cooperation of the partition plate and the trapezoidal plates, can pre-fix the end positions of two welded pipes, avoiding misalignment during welding, ensuring the consistency of the docking position during manual or automated welding, and reducing quality problems caused by positioning errors.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically a positioning device and a high-frequency welded pipe welding fixture. Background Technology

[0002] High-frequency welded pipe is a straight seam welded pipe that is welded by high-frequency current heating and pressure extrusion. It is made by using steel strip or steel plate as raw material, rolling it into a circle by forming unit, and then using the skin effect and proximity effect of high-frequency current to heat the edge of the steel strip to a molten or plastic state, and then completing the welding by extrusion rollers.

[0003] During the production of high-frequency welded pipes, due to process limitations, the length of a single pipe is usually a fixed specification (such as 6 meters or 12 meters). However, in long-distance pipeline construction, to improve welding efficiency and reduce the number of joints on site, it is often necessary to pre-weld one or more high-frequency welded pipes end-to-end to combine them into a longer pipe section (such as 24 meters). To ensure that the two steel pipes do not shake or misalign during the welding process, special clamps are usually used to fix the pipes.

[0004] Currently used welding fixtures mainly possess clamping and basic limiting functions, but their ability to precisely position the butt joint of two steel pipes is insufficient. In actual welding operations, butt joint processes can be divided into manual welding and automated welding. In manual welding, operators can flexibly adjust the position of the welding torch based on experience and visual judgment to complete the butt weld. However, when using automated welding equipment, if the butt joint position of the steel pipe ends is not fixed and has poor repeatability, the equipment parameters and welding path must be readjusted before each welding operation. This not only reduces production efficiency but also easily leads to unstable welding quality or operational errors due to positioning errors. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a positioning device and a high-frequency welded pipe welding fixture, which can ensure that the end-to-end position of two steel pipes is fixed relative to the base plate each time.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a positioning device, comprising a partition plate installed in the middle of a base plate, two trapezoidal plates fixedly connected to both ends of the upper surface of the base plate, the two trapezoidal plates at the same end of the base plate forming a group, a welding joint being left between the two groups of trapezoidal plates, the partition plate being located inside the welding joint, support components being connected to the side walls of the two trapezoidal plates located on the same side of the base plate, adjustment components being connected to the upper ends of the two support components, pressure components being connected to the upper ends of the two adjustment components, the two pressure components being located above the two groups of trapezoidal plates respectively, and the pressure components being located in the middle of the two trapezoidal plates in the same group.

[0007] Furthermore, the support assembly includes several support blocks, one end of which is fixedly connected to the trapezoidal plate, and the other end of which is connected to the adjustment assembly.

[0008] Furthermore, the adjustment assembly includes a threaded rod and several telescopic rods. The lower end of the threaded rod passes through one of the support blocks and is threadedly connected to the support block. The lower ends of the several telescopic rods are respectively fixedly connected to other support blocks. The upper ends of the threaded rod and the upper ends of the several telescopic rods are all connected to the pressure assembly.

[0009] Furthermore, the pressure assembly includes a support plate, several L-shaped rods, and several pressure plates. The bottom surface of the support plate is fixedly connected to the upper end of several telescopic rods. The middle part of the support plate is sleeved and rotatably connected to the outside of the upper end of the threaded rod. The upper surface of the support plate is fixedly connected to one end of several L-shaped rods. The other end of several L-shaped rods is fixedly connected to the upper surface of several pressure plates respectively. The pressure plates are located directly above two trapezoidal plates in the same group.

[0010] Furthermore, a slot is provided in the middle of the upper surface of the base plate, the slot is located below the welding joint, and one end of the partition is located in the slot.

[0011] Furthermore, a rotating rod is fitted onto one corner of the partition and rotatably connected thereto, with both ends of the rotating rod being fixedly connected to the two sides of the slot, respectively.

[0012] Furthermore, the card slot has placement openings on both sides near the rotating rod end, and metal blocks are fixedly connected to the inner walls of both placement openings. A magnet is fixedly connected to the inside of the partition near the corner of the rotating rod, and the magnet attracts the two metal blocks.

[0013] This utility model also provides a high-frequency welded pipe welding fixture, including the above-mentioned positioning device, and also including a base plate.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This positioning device and high-frequency welded pipe welding fixture can pre-fix the end positions of two welded pipes through the cooperation of the partition plate and the trapezoidal plate, so as to avoid misalignment during welding, ensure the consistency of the docking position during manual or automated welding, and reduce quality problems caused by positioning errors. 2. This positioning device and high-frequency welded pipe welding fixture do not require repeated adjustment of the welded pipe position or equipment parameters before welding. The welded pipe can be quickly clamped by adjusting the components, which shortens the preparation time. It is especially suitable for automated welding scenarios and reduces the frequency of equipment debugging. 3. This positioning device and high-frequency welded pipe welding fixture, the partition plate achieves rapid separation and fixation through the rotating rod and magnet structure, which can not only meet the conventional welding needs, but also avoid interference with the automated welding stroke by rotating the partition plate. At the same time, the adjustment component supports the clamping needs of welded pipes of different diameters, enhancing the versatility of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance of the present utility model; Figure 2 This is a schematic diagram of the overall appearance of the present invention from another perspective; Figure 3 This is an exploded view of the base plate, trapezoidal plate, and partition plate of this utility model; Figure 4 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0016] In the diagram: 1. Base plate; 2. Trapezoidal plate; 3. Telescopic rod; 4. Support plate; 5. Threaded rod; 6. Support block; 7. Pressure plate; 8. Partition plate; 9. Metal block; 10. Magnet; 11. Rotating rod; 12. L-shaped rod; 101. Slot; 102. Weld joint; 103. Placement opening. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Please see Figures 1-4 A positioning device includes a partition 8 installed in the middle of a base plate 1. Two trapezoidal plates 2 are fixedly connected to both ends of the upper surface of the base plate 1. The two trapezoidal plates 2 at the same end of the base plate 1 form a group. A welding joint 102 is left between the two groups of trapezoidal plates 2. The partition 8 is located inside the welding joint 102. Support components are connected to the side walls of the two trapezoidal plates 2 located on the same side of the base plate 1. Adjustment components are connected to the upper ends of the two support components. Pressure components are connected to the upper ends of the two adjustment components. The two pressure components are located above the two groups of trapezoidal plates 2 respectively, and the pressure components are located in the middle of the two trapezoidal plates 2 in the same group.

[0019] like Figures 1 to 4 As shown, when using the positioning device of this utility model, simply place the first high-frequency welded pipe (hereinafter referred to as the steel pipe) to be welded between the two trapezoidal plates 2 on the left side of the base plate 1 (here and below, left and right refer to the same principle). Figure 1 (Described from the perspective of the first steel pipe) At this time, the first steel pipe is held in place by the two trapezoidal plates 2 and will not slip off the sides of the base plate 1. Then, the first steel pipe is pushed toward the weld joint 102 in the middle of the base plate 1 until the end of the first steel pipe touches the surface of the partition plate 8. At this time, the pressure component is controlled to descend by the adjustment component on the left side of the base plate 1, so that it can cooperate with the two trapezoidal plates 2 to clamp the first steel pipe from the top and bottom sides to maintain stability. After the first steel pipe is positioned, the partition plate 8 is separated from the weld joint 102. Then, the second steel pipe is placed on the two trapezoidal plates 2 on the right side of the base plate 1, and the end of the second steel pipe is pressed against the end of the first steel pipe. At this time, the two steel pipes are close together. Then, the pressure component is lowered by the adjustment component on the right side of the base plate 1, so that the second steel pipe can be clamped. After that, whether it is manual welding or automated machine welding, the position of the ends of the two steel pipes is fixed, and there is no need for repeated adjustment, thus improving work efficiency.

[0020] As a preferred embodiment of the present invention, the support component includes a plurality of support blocks 6, one end of each of the support blocks 6 being fixedly connected to the trapezoidal plate 2, and the other end of each of the support blocks 6 being connected to the adjustment component.

[0021] More specifically, by setting several support blocks 6, stable support can be provided for the adjustment component and the pressure component to prevent loosening.

[0022] As a preferred embodiment of this utility model, the adjustment component includes a threaded rod 5 and several telescopic rods 3. The lower end of the threaded rod 5 passes through one of the support blocks 6 and is threadedly connected to the support block 6. The lower ends of the several telescopic rods 3 are respectively fixedly connected to other support blocks 6. The upper ends of the threaded rod 5 and the upper ends of the several telescopic rods 3 are all connected to the pressure component.

[0023] More specifically, when it is necessary to adjust the height of the pressure component, simply turn the knob at the upper end of the threaded rod 5 to rotate the threaded rod 5. As the threaded rod 5 rotates, it will slowly unscrew from inside the support block 6 and rise (or screw in to lower), thereby changing the height of the pressure component. In addition, because several telescopic rods 3 are provided on both sides of the threaded rod 5, it can be ensured that the pressure assembly will not deviate when it is raised or lowered, but will only rise or fall in a specific direction.

[0024] As a preferred embodiment of this utility model, the pressure assembly includes a support plate 4, a plurality of L-shaped rods 12 and a plurality of pressure plates 7. The bottom surface of the support plate 4 is fixedly connected to the upper end of a plurality of telescopic rods 3. The middle part of the support plate 4 is sleeved and rotatably connected to the outside of the upper end of the threaded rod 5. The upper surface of the support plate 4 is fixedly connected to one end of a plurality of L-shaped rods 12. The other end of a plurality of L-shaped rods 12 is fixedly connected to the upper surface of a plurality of pressure plates 7 respectively. The plurality of pressure plates 7 are located directly above the two trapezoidal plates 2 in the same group.

[0025] More specifically, when it is necessary to tighten or loosen the limit on the steel pipe, as the threaded rod 5 rises and falls, the support plate 4 connected to the threaded rod 5 and the telescopic rod 3 can rise and fall, thereby pushing several L-shaped rods 12 and several pressure plates 7 on the support plate 4 to rise and fall, thus changing the height.

[0026] As a preferred embodiment of this utility model, a slot 101 is provided in the middle of the upper surface of the base plate 1. The slot 101 is located below the welding joint 102, and one end of the partition plate 8 is located in the slot 101.

[0027] More specifically, by setting the slot 101, the partition 8 can be supported and limited, improving the stability of the partition 8 when it is limited within the weld joint 102.

[0028] As a preferred embodiment of this utility model, a rotating rod 11 is sleeved and rotatably connected to one corner of the partition 8, and the two ends of the rotating rod 11 are fixedly connected to the two sides of the slot 101 respectively.

[0029] More specifically, by setting the rotating rod 11, when it is necessary to limit or expand, the partition 8 can be rotated to one side of the bottom plate 1 to avoid affecting the abutting of the ends of the two steel pipes; It should be noted that in practical applications, if the partition 8 affects the working stroke of the automated welding machine, simply raise the bottom plate 1 or install support legs, so that the partition 8 can be rotated 180° directly to the bottom plate 1, thus avoiding obstruction of the working stroke.

[0030] As a preferred embodiment of this utility model, the card slot 101 has placement openings 103 on both sides near the end of the rotating rod 11. Metal blocks 9 are fixedly connected to the inner walls of the two placement openings 103. A magnet 10 is fixedly connected to the inside of the partition plate 8 near the corner of the rotating rod 11. The magnet 10 attracts the two metal blocks 9.

[0031] More specifically, by setting up a placement opening 103, placing a metal block 9 inside the placement opening 103, and placing a magnet 10 inside the partition 8, the rotating partition 8 can be limited, reducing the probability of the partition 8 shaking.

[0032] This utility model also provides a high-frequency welded pipe welding fixture, including the above-mentioned positioning device, and also including a base plate 1.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A positioning device, characterized in that: The system includes a partition (8) installed in the middle of the base plate (1). Two trapezoidal plates (2) are fixedly connected to both ends of the upper surface of the base plate (1). The two trapezoidal plates (2) at the same end of the base plate (1) form a group. A welding joint (102) is left between the two groups of trapezoidal plates (2). The partition (8) is located inside the welding joint (102). The side walls of the two trapezoidal plates (2) located on the same side of the base plate (1) are connected to support components. The upper ends of the two support components are connected to adjustment components. The upper ends of the two adjustment components are connected to pressure components. The two pressure components are located above the two groups of trapezoidal plates (2) respectively, and the pressure components are located in the middle of the two trapezoidal plates (2) in the same group.

2. The positioning device according to claim 1, characterized in that: The support assembly includes several support blocks (6), one end of each of the support blocks (6) is fixedly connected to the trapezoidal plate (2), and the other end of each of the support blocks (6) is connected to the adjustment assembly.

3. A positioning device according to claim 2, characterized in that: The adjustment assembly includes a threaded rod (5) and several telescopic rods (3). The lower end of the threaded rod (5) passes through one of the support blocks (6) and is threadedly connected to the support block (6). The lower ends of the several telescopic rods (3) are respectively fixedly connected to other support blocks (6). The upper ends of the threaded rod (5) and the upper ends of the several telescopic rods (3) are connected to the pressure assembly.

4. A positioning device according to claim 3, characterized in that: The pressure assembly includes a support plate (4), several L-shaped rods (12) and several pressure plates (7). The bottom surface of the support plate (4) is fixedly connected to the upper end of several telescopic rods (3). The middle part of the support plate (4) is sleeved and rotatably connected to the outside of the upper end of the threaded rod (5). The upper surface of the support plate (4) is fixedly connected to one end of several L-shaped rods (12). The other end of several L-shaped rods (12) is fixedly connected to the upper surface of several pressure plates (7). Several pressure plates (7) are located directly above the two trapezoidal plates (2) in the same group.

5. A positioning device according to claim 4, characterized in that: A slot (101) is provided in the middle of the upper surface of the base plate (1). The slot (101) is located below the welding joint (102). One end of the partition plate (8) is located in the slot (101).

6. A positioning device according to claim 5, characterized in that: A rotating rod (11) is fitted and rotatably connected to one corner of the partition (8), and the two ends of the rotating rod (11) are fixedly connected to the two sides of the slot (101).

7. A positioning device according to claim 6, characterized in that: The slot (101) has placement openings (103) on both sides near the rotating rod (11). The inner walls of the two placement openings (103) are fixedly connected with metal blocks (9). The partition (8) has a magnet (10) fixedly connected inside one corner near the rotating rod (11). The magnet (10) attracts the two metal blocks (9).

8. A high-frequency welded pipe welding fixture, characterized in that: The positioning device comprising any one of claims 1-7 further comprises a base plate (1).

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