Pipeline welding auxiliary line marking device

Abstract

The utility model relates to a pipeline welding auxiliary line marking device which aims at improving marking precision and working efficiency and reducing personal errors. The device comprises a fixed seat, a V-shaped column, a track, a positioning block, a U-shaped block, a screw rod, a sliding block, a V-shaped block, a sliding seat, a clamping arm, a clamp, a limiting groove, a positioning rod and a positioning sleeve. A V-shaped column and a rail which are parallel and coaxial are arranged on the fixing seat, a U-shaped block is fixed through a positioning block and internally provided with a threaded hole and a guide rail, a screw penetrates through the U-shaped block, one end of the screw is connected with a rotating handle, the other end of the screw is connected with a sliding block, and the sliding block slides along the guide rail and is provided with the V-shaped block. The sliding seat slides along the track, and the hinged clamping arm and the clamp are used for fixing the marking pen. And the positioning sleeve and the stop pin on the positioning rod are matched with the limiting groove, so that accurate limiting is realized. According to the device, pipeline centering is guaranteed through cooperation of the V-shaped column and the V-shaped block, stable scribing is guaranteed through the U-shaped block and the guide rail, accurate movement is guaranteed through screw driving, and the device is suitable for pipelines with different diameters and high in universality.

Description

Technical Field

[0001] This application relates to the field of metal pipe manufacturing or processing technology, specifically a pipe welding auxiliary line marking device. Background Technology

[0002] In pipe welding, accurately marking welding guide lines is a crucial step in ensuring welding quality and efficiency. Traditional methods typically rely on manual marking, where workers use rulers, pencils, or other simple tools to measure and mark on the pipe surface. This method is not only time-consuming and labor-intensive but also susceptible to human error, leading to inaccurate markings and consequently affecting weld quality. Furthermore, manual marking is difficult on complex pipes or irregular surfaces, further reducing work efficiency. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a pipe welding auxiliary line marking device, aiming to improve marking accuracy and work efficiency while reducing human error. To achieve the above objective, this application provides the following technical solution: a pipe welding auxiliary line marking device, comprising:

[0004] A fixed base is provided with a V-shaped column and a track. The V-shaped column and the track are arranged in parallel. The two sections of the V-shaped column are arranged coaxially, and the two sides of the two sections of the V-shaped column are connected by two positioning blocks.

[0005] The U-shaped block is disposed on the positioning block, and the U-shaped block has a threaded hole in the middle and guide rails on its inner walls on both sides.

[0006] A screw is provided in the threaded hole of the U-shaped block, and a rotating handle is provided at one end of the screw and a slider is connected to the other end. The slider is adapted to the guide rail and can slide along the guide rail. A V-shaped block is provided on the slider, and the opening of the V-shaped block faces the V-shaped post.

[0007] A sliding seat is disposed on the track and can slide along the track. A clamping arm is hinged to the sliding seat, and a clip is provided at one end of the clamping arm to hold a marker pen.

[0008] A limiting groove is provided on the side wall of the sliding seat;

[0009] A positioning rod is provided on the fixed base, and a positioning sleeve is fitted on the positioning rod. A stop pin is provided on the positioning sleeve, and a protrusion is provided at the end of the stop pin. The protrusion is adapted to the limiting groove. When the positioning sleeve is rotated, the protrusion can be engaged into the limiting groove.

[0010] In a preferred embodiment of this technical solution, the V-shaped block is located at the connection gap between the two V-shaped columns and can extend into the connection gap between the two V-shaped columns.

[0011] In a preferred embodiment of this technical solution, one end of the U-shaped block is hinged to the positioning block, and the other end is provided with a hook for engaging with the positioning block.

[0012] In a preferred embodiment of this technical solution, the side of the protrusion opposite to the limiting groove is arc-shaped.

[0013] In a preferred embodiment of this technical solution, the positioning rod is provided with a plurality of positioning sleeves.

[0014] In a preferred embodiment of this technical solution, the clamping arm is composed of multiple U-shaped hinge pieces, a rotating shaft, and a clamp. The multiple U-shaped hinge pieces are hinged end to end and then hinged to the rotating shaft. One end of the rotating shaft is hinged to a clamp.

[0015] In a preferred embodiment of this technical solution, a scale is provided on the outer wall of the positioning rod to indicate the position of the positioning sleeve.

[0016] In a preferred embodiment of this technical solution, the limiting groove and the axis of the marker are on the same plane.

[0017] Compared with the prior art, the beneficial effects of this application are:

[0018] This invention employs a V-shaped column and V-block design to ensure stable alignment between the pipe and the marking device, avoiding positional deviations caused by pipe movement during traditional manual marking. The U-shaped block and guide rail in the device ensure smooth movement of the marking assembly, effectively reducing vibration and further guaranteeing the straightness and accuracy of the marking. Precise movement of the marking assembly is achieved by rotating the handle to drive the screw, and the assembly is easy to install and remove, greatly improving work efficiency. This device can adapt to the marking needs of pipes of different diameters; by adjusting the position of the V-block, a tight fit with different pipes can be achieved, making it widely applicable. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a pipe welding auxiliary line marking device proposed in an embodiment of this application;

[0020] Figure 2 This is another perspective view of a pipe welding auxiliary line marking device proposed in the embodiments of this application;

[0021] In the diagram: 1. Fixed base; 2. V-shaped column; 3. Rail; 4. Positioning block; 5. U-shaped block; 6. Guide rail; 7. Screw; 8. Handle; 9. Slider; 10. V-shaped block; 11. Sliding seat; 12. Clamping arm; 13. Clamp; 14. Marker; 15. Limiting groove; 16. Positioning rod; 17. Positioning sleeve; 18. Stop pin; 19. Protrusion; 20. Hook; 21. U-shaped hinge piece; 22. Rotating shaft. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0023] It should be noted that in the description of this application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "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 application 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 application.

[0024] Furthermore, it should be understood that, for ease of description, the dimensions of the various components shown in the accompanying drawings are not drawn to actual scale; for example, the thickness or width of some layers may be exaggerated relative to other layers.

[0025] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined or described in one figure, it will not need to be discussed or described in detail in the description of the subsequent figures.

[0026] In order to solve the technical problems in the background art, such as Figure 1-2 As shown, this application provides a technical solution: a pipe welding auxiliary line marking device, characterized as follows:

[0027] The fixed base 1 serves as a stable base for securing the entire pipeline welding auxiliary line marking device. The fixed base 1 can be made of metal or rigid plastic to ensure its strength and stability. V-shaped columns 2 and rails 3 are arranged parallel to each other on the fixed base 1. The V-shaped columns 2 support and position the pipeline, while the rails 3 facilitate the movement of the sliding seat 11. The unique V-shaped design of the V-shaped columns 2 provides automatic centering to accommodate pipelines of different diameters. The two sides of the two V-shaped columns 2 are connected by two positioning blocks 4, which can be fixed to the V-shaped columns 2 by bolts or welding to ensure structural stability. A U-shaped block 5 is mounted on the positioning blocks 4, with a threaded hole in the center for mounting the screw 7. Guide rails 6 are provided on the inner walls of both sides of the U-shaped block 5 for the sliding of the slider 9. The screw 7 passes through the threaded hole in the U-shaped block 5 and has a rotating handle 8 installed at one end for manual rotation. The other end of the screw 7 is connected to the slider 9, which slides along the guide rails 6. A V-block 10 is provided on the slider 9, with its opening facing the V-shaped post 2, for contact with the pipe and to assist in marking. A sliding seat 11 is mounted on the track 3 and can slide along it. A clamping arm 12 is hinged to the sliding seat 11, with a clip 13 at one end for engaging a marker pen 14. A limiting groove 15 is provided on the side wall of the sliding seat 11 to limit its range of motion and ensure marking accuracy. A positioning rod 16 is mounted on the fixed seat 1, and a positioning sleeve 17 is fitted onto it. A stop pin 18 is provided on the positioning sleeve 17, with a protrusion 19 at its end. The protrusion 19 is adapted to the limiting groove 15; by rotating the positioning sleeve 17, the protrusion 19 can be engaged into the limiting groove 15, thereby fixing the position of the sliding seat 11.

[0028] In use, first place the pipe between the V-shaped posts 2, and adjust the position of the slider 9 by rotating the handle 8 so that the V-shaped block 10 contacts the pipe surface. Then, slide the sliding seat 11 along the track 3 to the appropriate position, and fix the marker pen 14 by the clip 13. Finally, rotate the positioning sleeve 17 to make the protrusion 19 engage in the limiting groove 15, fix the position of the sliding seat 11, and begin marking the welding auxiliary lines.

[0029] It should be noted that the V-block 10 is movable, and its position is located in the connecting gap between the two V-shaped posts 2. This design allows the V-block 10 to move out of or into the connecting gap of the V-shaped posts 2 to accommodate pipes of different diameters. The movement of the V-block 10 can be achieved by rotating the screw 7. When the screw 7 rotates, the slider 9 moves along the guide rail 6 of the U-block 5, thereby causing the V-block 10 to move into or out of the connecting gap of the V-shaped posts 2.

[0030] It is worth noting that one end of the U-shaped block 5 is connected to the positioning block 4 via a hinge structure, allowing the U-shaped block 5 to rotate freely on the positioning block 4. The other end of the U-shaped block 5 is designed with a hook 20. The hook 20 is a protruding part, which can be hook-shaped or buckle-shaped, used to engage with the positioning block 4 to fix the position of the U-shaped block 5. A corresponding protruding structure or notch is designed between the hook 20 and the positioning block 4, allowing the hook 20 to accurately engage with the positioning block 4. This engaging structure ensures the stability of the U-shaped block 5 during operation and prevents displacement due to external forces.

[0031] It should be noted that the arc-shaped design of the protrusion 19 makes its fit with the limiting groove 15 smoother, reducing the friction when the protrusion 19 is engaged in the limiting groove 15, thus making the positioning operation smoother. The protrusion 19 is designed as a semi-circular or elliptical arc, which ensures that when the positioning sleeve 17 is rotated, the protrusion 19 can slide smoothly into the limiting groove 15, reducing jamming.

[0032] It is worth noting that the positioning rod 16 is provided with several positioning sleeves 17, which can be distributed along the positioning rod 16 as needed. The number of positioning sleeves 17 depends on the design requirements and application scenario of the device, and can be determined according to the adjustment range and accuracy requirements of the pipe welding auxiliary line marking device. The positioning sleeves 17 are distributed along the axial direction of the positioning rod 16, which can be uniform or non-uniform according to specific adjustment requirements. This distribution allows the positioning rod 16 to fix the protrusion 19 at different positions to adapt to different marking requirements. Each positioning sleeve 17 can move independently along the positioning rod 16 to adjust the position of the protrusion 19. By rotating the positioning sleeve 17, the protrusion 19 can be engaged into the limiting groove 15 on the sliding seat 11, thereby fixing the position of the sliding seat 11.

[0033] It should be noted that the clamping arm 12 is a composite structure consisting of multiple U-shaped hinge pieces 21, a rotating shaft 22, and a clip 13. This design makes the clamping arm 12 adjustable. The U-shaped hinge pieces 21 are U-shaped components made of metal or engineering plastic, hinged end to end to form a continuous linkage structure. This design allows the clip 13 to be adjusted to different heights during use. The rotating shaft 22 is a shaft passing through the center of the U-shaped hinge piece 21 at its end, and it is hinged to the center of the U-shaped hinge piece 21 at that end, allowing the rotating shaft 22 to rotate around the U-shaped hinge piece 21. The other end of the rotating shaft 22 is hinged to the clip 13, which is used to fix the marker pen 14 or other marking tools. The clip 13 can be designed to be adjustable to accommodate marker pens 14 of different diameters.

[0034] It is worth noting that a series of scales are provided on the outer wall of the positioning rod 16. These scales can be linear or segmented, and are used to precisely indicate the position of the positioning sleeve 17 along the positioning rod 16. Each graduation on the scale can be marked with a number or symbol, which corresponds to a specific position of the positioning sleeve 17. These markings can help users quickly identify and adjust the positioning sleeve 17 to a preset position.

[0035] It is worth noting that the limiting groove 15 is located on the side wall of the sliding seat 11. Its design ensures that when the marker 14 is fixed by the clip 13, the axis of the marker 14 coincides with the plane containing the limiting groove 15. This design ensures the stability and consistency of the marker 14 during the marking process, as the axis of the marker 14 and the limiting groove 15 are on the same plane, reducing marking errors caused by axis deviation. By keeping the axis of the marker 14 and the limiting groove 15 on the same plane, marking accuracy can be improved because this alignment reduces any potential errors caused by axis deviation.

[0036] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pipe welding auxiliary line marking device, characterized in that, include: A fixed base (1) is provided with a V-shaped column (2) and a track (3). The V-shaped column (2) and the track (3) are arranged in parallel. The two sections of the V-shaped column (2) are arranged coaxially, and the two sides of the two sections of the V-shaped column (2) are connected by two positioning blocks (4). U-shaped block (5), the U-shaped block (5) is disposed on the positioning block (4), and the U-shaped block (5) has a threaded hole in the middle and guide rails (6) on its inner walls on both sides; A screw (7) is provided in the threaded hole of the U-shaped block (5), and a rotating handle (8) is provided at one end of the screw (7), and a slider (9) is connected to the other end of the slider (9). The slider (9) is adapted to the guide rail (6) and can slide along the guide rail (6). A V-shaped block (10) is provided on the slider (9), and the opening of the V-shaped block (10) faces the V-shaped post (2). A sliding seat (11) is provided on the track (3) and can slide along the track (3). A clamping arm (12) is hinged on the sliding seat (11). A clip (13) is provided at one end of the clamping arm (12). The clip (13) engages with a marker pen (14). A limiting groove (15) is provided on the side wall of the sliding seat (11); A positioning rod (16) is provided on the fixed base (1), and a positioning sleeve (17) is fitted on the positioning rod (16). A stop pin (18) is provided on the positioning sleeve (17), and a protrusion (19) is provided at the end of the stop pin (18). The protrusion (19) is adapted to the limiting groove (15). When the positioning sleeve (17) is rotated, the protrusion (19) can be locked into the limiting groove (15).

2. The pipe welding auxiliary line marking device according to claim 1, characterized in that, The V-shaped block (10) is located in the gap between the two V-shaped columns (2) and can extend into the gap between the two V-shaped columns (2).

3. The pipe welding auxiliary line marking device according to claim 1, characterized in that, One end of the U-shaped block (5) is hinged to the positioning block (4), and the other end is provided with a hook (20) for engaging with the positioning block (4).

4. The pipe welding auxiliary line marking device according to claim 1, characterized in that, The side of the protrusion (19) opposite to the limiting groove (15) is arc-shaped.

5. The pipe welding auxiliary line marking device according to claim 1, characterized in that, The positioning rod (16) is provided with a plurality of positioning sleeves (17).

6. The pipe welding auxiliary line marking device according to any one of claims 1-5, characterized in that, The clamping arm (12) is composed of multiple U-shaped hinge pieces (21), a rotating shaft (22) and a clamp (13). The multiple U-shaped hinge pieces (21) are hinged end to end and then hinged to the rotating shaft (22). One end of the rotating shaft (22) is hinged to the clamp (13).

7. The pipe welding auxiliary line marking device according to claim 6, characterized in that, The outer wall of the positioning rod (16) is provided with a scale for indicating the position of the positioning sleeve (17).

8. The pipe welding auxiliary line marking device according to claim 6, characterized in that, The limiting groove (15) and the axis of the marker (14) are on the same plane.

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