A tube clamping tool for machining thin-walled steel tubes

Abstract

The utility model discloses a pipe clamp tool for processing thin wall steel pipe, including clamp subassembly, operating assembly and spot welding avoidance structure, and clamp subassembly contains two symmetrical pipe clamp body, and two pipe clamp bodies respectively include two clamping parts that are connected to the outer wall of steel pipe, and two connecting arms are connected in the one end of two clamping parts, operating assembly is connected with the connecting arm of two pipe clamp bodies respectively, is used for providing holding position for operating pipe clamp tool, and spot welding avoidance structure includes hollow spot welding area that is set up on the clamping part of two pipe clamp bodies along the welding circumference direction of steel pipe, and is formed pipe clamp cavity through two pipe clamp body and is combined, and the outer wall of steel pipe is adhered to the embracing structure, can one end of two steel pipes is held stably and is aligned and is resisted, guarantees that the relative position accuracy is higher when welding, carries out spot welding operation through hollow spot welding area, has reduced the auxiliary operation time, has shortened the welding period, thereby has improved production efficiency, has helped guaranteeing the welding quality.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, specifically to a pipe clamping tool for processing thin-walled steel pipes. Background Technology

[0002] Thin-walled steel pipes (typically referring to steel pipes with a very small wall thickness to diameter ratio) are widely used in automotive exhaust systems, bicycle frames, furniture structures, decorative components, low-pressure fluid transport pipelines, and various small mechanical equipment frames due to their lightweight, good structural strength, and relatively economical cost. When connecting these small-diameter thin-walled steel pipes, butt welding and spot welding are commonly used processes. Whether it's butt welding, which requires forming a continuous sealed weld, or spot welding, which involves partial connections, accurately and stably fixing the pipe fittings to be welded is a key prerequisite for achieving high-quality and high-efficiency welding.

[0003] Currently, in small- and medium-scale production settings, the spot welding of small-diameter thin-walled steel pipes commonly employs the following simplified method: the operator manually places two steel pipes at the required angle and position on a workbench or simple clamp, then directly holds the pipe to be welded against another fixed object to restrict its movement, continuously applying pressure or maintaining its position by hand during the welding process. It is evident that fixing the welding of such small-diameter thin-walled steel pipes typically involves methods such as placement and manual restraint, which is cumbersome, lacks operational stability, increases the risk of welding deformation, prolongs the welding cycle, and reduces production efficiency. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the welding and fixing of small-diameter thin-walled steel pipes in the prior art usually adopts the methods of placement and hand-holding limit to fix their position, which is cumbersome, has poor operation stability, increases the risk of welding deformation, and reduces production efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides a pipe clamping tool for processing thin-walled steel pipes, comprising: The clamp assembly includes two symmetrically arranged pipe clamp bodies and a pipe clamp cavity formed by the two pipe clamp bodies joining together to surround and clamp the steel pipe. The two pipe clamp bodies are a clamping structure adapted to the shape of the steel pipe, and each includes two clamping parts that fit and connect to the outer wall of the steel pipe, and two connecting arms connected to one end of the two clamping parts. An operating component is connected to the connecting arms of the two pipe clamp bodies respectively, and is used to provide a gripping part for operating the pipe clamp tool. The operating component drives the two pipe clamp bodies to open or close relative to each other, and clamps and aligns one end of the two steel pipes by the two pipe clamp bodies closing. The spot welding avoidance structure includes a hollow spot welding area opened on the clamping part of the two pipe clamps along the welding circumference of the steel pipe, and the hollow spot welding area corresponds to the spot welding operation position of the two steel pipes.

[0006] As a preferred embodiment, the two clamping parts are semi-circular arc structures, and the hollow spot welding area is connected to the pipe clamp cavity, so that the ends of the two steel pipes clamped by the clamp assembly are exposed in the hollow spot welding area.

[0007] As a preferred embodiment, the tube clamp cavity includes two clamping grooves disposed on the inner walls of the two clamping parts, and the two clamping grooves are arc groove structures.

[0008] As a preferred embodiment, the hollowed-out spot welding area includes a plurality of short arc-shaped spot welding holes that are respectively spaced apart on the two clamping parts along the circumferential direction.

[0009] As a preferred embodiment, the hollowed-out spot welding area includes two elongated arc-shaped spot welding channels that are continuously arranged on the two clamping parts along the circumferential direction.

[0010] As a preferred embodiment, the inner wall of the clamping groove is provided with an anti-slip pad layer, which is a rubber pad structure or a silicone pad structure.

[0011] As a preferred embodiment, the anti-slip pad layer is composed of an anti-slip coating applied to the inner wall of the clamping groove.

[0012] As a preferred embodiment, the connecting arm includes a set of arc-shaped arms disposed opposite to each other and a connecting groove formed between the set of arc-shaped arms; the operating component includes two pivotally disposed lever handles and a spring disposed between the two lever handles, the two lever handles being fixedly connected to the connecting grooves of the two connecting arms respectively, and the opening and closing action of the clamp assembly is controlled by pressing the two lever handles.

[0013] As a preferred embodiment, the two pipe clamps are locked in relative position by a locking structure when they are in the mating state. The locking structure is located on the other end of the two clamping parts away from the connecting arm.

[0014] As a preferred embodiment, the locking structure includes a locking buckle disposed at one end of one of the clamping portions, and a locking groove disposed at the other end of the clamping portion and engaging with the locking buckle.

[0015] As a preferred embodiment, the locking structure includes two locking blocks disposed opposite to the ends of the two clamping portions and threaded holes disposed corresponding to the two locking blocks, and a locking member threaded into the threaded holes to fasten the two clamping portions.

[0016] Compared with the prior art, the technical solution of this utility model has the following advantages: 1. The pipe clamp tool provided by this utility model forms a pipe clamp cavity by two symmetrical pipe clamp bodies engaging together. This cavity, with its clamping structure, fits snugly against the outer wall of the steel pipe, stably clamping and aligning one end of each pipe. This ensures higher relative positional accuracy during welding, preventing pipe displacement caused by hand tremors or uneven force, effectively reducing the risk of welding deformation and ensuring consistent welding quality. The operating components provide dedicated gripping areas that drive the two pipe clamp bodies to open or close relative to each other, replacing the tedious process of manual placement and gripping. This makes pipe fixing simpler and less strenuous, reducing reliance on operator experience. The hollowed-out spot welding areas designed on the two clamping parts correspond to the spot welding positions of the two steel pipes, ensuring stable clamping without obstructing the spot welding area. Spot welding can be performed directly without repeated disassembly or adjustment of the clamps, reducing auxiliary operation time, shortening the welding cycle, and thus improving production efficiency.

[0017] 2. In the pipe clamp tool provided by this utility model, the hollow spot welding area is a pipe clamp cavity formed by the mating of two pipe clamp bodies, so that the ends of the two steel pipes that need to be spot welded are exposed in the hollow spot welding area. The welding tool can directly contact the spot welding area without additional adjustment or avoidance. This simplifies the spot welding operation process, saves operation time, and improves the efficiency of spot welding operations. The operator can directly observe the welding situation in the spot welding area, understand the formation and fusion state of the weld point in real time, and make it convenient to adjust the welding parameters in a timely manner, thereby effectively ensuring the welding quality and reducing the occurrence of welding defects.

[0018] 3. The pipe clamp tool provided by this utility model, by setting multiple short arc-shaped spot welding holes at intervals on the clamping part, can retain more material of the clamping part of the pipe clamp body while meeting the spot welding requirements. This allows the pipe clamp body to maintain good structural strength and rigidity when clamping the steel pipe, and it is not easy to deform due to force, thus continuously and stably clamping the steel pipe, ensuring the stability of the welding process. In addition, the spaced spot welding holes can disperse the stress on the pipe clamp during use. Each spot welding hole corresponds to a specific spot welding position, allowing operators to more clearly and accurately locate and weld each weld point, improving the accuracy of the spot welding position and helping to ensure welding quality.

[0019] 4. The pipe clamp tool provided by this utility model increases the friction coefficient between the inner wall of the clamping groove and the thin-walled steel pipe through the anti-slip pad layer. This effectively prevents the thin-walled steel pipe from sliding or shifting during welding, ensuring the accuracy of the welding position and improving the welding quality. The anti-slip pad layer preferably uses soft rubber pads and silicone pads. When clamping the thin-walled steel pipe, it can prevent the hard pipe clamp body from directly contacting the steel pipe surface, which can play a buffering role, making the clamping force more evenly distributed on the steel pipe surface, reducing excessive local pressure, and preventing the thin-walled steel pipe from deforming due to concentrated force, thus ensuring the original shape and dimensional accuracy of the steel pipe.

[0020] 5. In the pipe clamp tool provided by this utility model, the arc-shaped arm is conducive to optimizing force transmission and structural strength, and improving the resistance to deformation. The connecting groove provides a precise fixing space for the lever handle, ensuring that the lever handle and the arc-shaped arm form a rigid connection. Based on the lever principle, the two pivotally set lever handles allow the operator to apply only a small pressing force to amplify the force through the lever, thereby driving the clamp assembly to generate sufficient clamping force. For scenarios that require frequent opening and closing or clamping of steel pipe welding, it can significantly reduce the intensity of operation and improve work efficiency. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 A schematic diagram of the working process of the pipe clamp tool provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the pipe clamp tool after the operation components are hidden. Figure 3 This is a schematic diagram of the clip assembly of this utility model; Figure 4 This is a schematic diagram of the spot welding hole structure of this utility model; Figure 5 This is a schematic diagram of the spot welding channel of this utility model.

[0023] Figure 6 This is a cross-sectional schematic diagram of the pipe clamp tool of this utility model, showing the locking structure in particular.

[0024] Explanation of reference numerals in the attached drawings: 1. Pipe clamp body; 11. Clamping part; 12. Connecting arm; 13. Connecting groove; 14. Clamping groove; 2. Pipe clamp cavity; 3. Operating component; 31. Lever handle; 4. Hollowed-out spot welding area; 41. Spot welding hole; 42. Spot welding channel; 5. Anti-slip pad; 6. Locking block; 7. Locking element; 8. Steel pipe. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0026] In the description of this utility model, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; and they can be internal connections between two components.

[0028] Example The following is a detailed description of this embodiment with reference to the accompanying drawings: This embodiment provides, as follows: Figure 1-6 The diagram illustrates a pipe clamping tool for processing thin-walled steel pipes, comprising a clamping assembly, an operating assembly 3, and a spot-welded clearance structure. The clamping assembly includes two symmetrically arranged clamping bodies 1 and a clamping cavity 2 formed by the two clamping bodies 1 clamping together to surround and clamp the steel pipe 8. The two clamping bodies 1 are fitted to the shape of the steel pipe and each includes two clamping portions 11 that fit against the outer wall of the steel pipe, and two connecting arms 12 connected to one end of each clamping portion 11. The operating assembly 3 is connected to the connecting arms 12 of the two clamping bodies 1. The operating component 3 is used to provide a gripping part for the operating pipe clamp tool. It drives the two pipe clamp bodies 1 to open or close relative to each other. The two pipe clamp bodies 1 are closed to clamp and align one end of the two steel pipes. The spot welding avoidance structure includes a hollow spot welding area 4 opened on the clamping part 11 of the two pipe clamp bodies 1 along the welding circumference of the steel pipe 8. The hollow spot welding area 4 corresponds to the spot welding operation position of the two steel pipes 8. That is, the end of the two steel pipes that are clamped and abutted together is exposed in the hollow spot welding area to facilitate the subsequent spot welding operation of the two steel pipes.

[0029] The above-described implementation method is the core technical solution of this embodiment. The pipe clamp tool forms a pipe clamp cavity 2 by two symmetrical pipe clamp bodies 1 engaging together. This cavity fits snugly against the outer wall of the steel pipe, stably clamping and aligning one end of each pipe. This ensures higher relative positional accuracy during welding and avoids pipe displacement caused by hand shaking or uneven force, effectively reducing the risk of welding deformation. This also helps ensure consistent welding quality. The operating component 3 provides a dedicated gripping area, which can drive the two pipe clamp bodies 1 to open or close relative to each other, replacing the tedious process of manual placement and gripping. This makes the steel pipe fixing operation simpler and less strenuous, reducing reliance on operator experience. The hollowed-out spot welding area 4 designed on the two clamping parts 11 corresponds to the spot welding position of the two steel pipes. While stably clamping the steel pipe, it does not obstruct the spot welding area. Spot welding can be performed directly without repeated disassembly or adjustment of the clamp, reducing auxiliary operation time, shortening the welding cycle, and thus improving production efficiency.

[0030] For further optimization settings, refer to Figure 3 The two clamping parts 11 are semi-circular arc structures, so that the ends of the two steel pipes 8 clamped by the clamping assembly are exposed in the hollow spot welding area 4. The pipe clamp cavity 2 includes two clamping grooves 14 set on the inner wall of the two clamping parts 11. The two clamping grooves 14 are circular arc groove structures. The semi-circular arc symmetrical structure can make the clamping force evenly distributed on the outer wall of the steel pipe. It can not only play a welding clamping and positioning role for a group of steel pipes to be welded, but also minimize the local deformation of the steel pipe caused by the clamping force. At the same time, this semi-circular arc clamping part 11 can achieve a rounding effect, so that thin-walled steel pipes with slight deformation, protrusions or elliptical shapes can be restored to a near-initial circular shape, ensuring the original shape and dimensional accuracy of the steel pipe, so that the welded steel pipe can still meet the usage requirements. The hollow spot welding area 4 is a pipe clamp cavity 2 formed by the mating of two pipe clamp bodies, so that the ends of the two steel pipes that need to be spot welded are exposed in the hollow spot welding area 4. The welding tool can directly contact the spot welding area without additional adjustment or avoidance. This simplifies the spot welding operation process, saves operation time, and improves the efficiency of spot welding. The operator can directly observe the welding situation in the spot welding area, understand the formation and fusion state of the weld in real time, and make it convenient to adjust the welding parameters in a timely manner, thereby effectively ensuring the welding quality and reducing the occurrence of welding defects.

[0031] To improve the reliability and stability of the clamping part 11 in clamping the steel pipe, such as Figure 6As shown, the inner walls of the two clamping grooves 14 are provided with anti-slip pads 5. The anti-slip pads 5 increase the friction coefficient between the inner walls of the clamping grooves 14 and the thin-walled steel pipe 8, which can effectively prevent the thin-walled steel pipe from sliding or shifting during the welding process, ensuring the accuracy of the welding position and improving the welding quality. The anti-slip pads 5 are preferably rubber pads or silicone pads. When clamping the thin-walled steel pipe, they can prevent the hard pipe clamp 1 from directly contacting the surface of the steel pipe, which can play a buffering role, making the clamping force more evenly distributed on the surface of the steel pipe, reducing excessive local pressure, preventing the thin-walled steel pipe from deforming due to concentrated force, and ensuring the original shape and dimensional accuracy of the steel pipe. Obviously, the anti-slip pad 5 can also be configured in other ways. For example, the anti-slip pad 5 can also be composed of an anti-slip coating applied to the inner wall of the clamping groove 14. The anti-slip coating can be made by mixing silicone particles with epoxy resin. After coating, it forms a single coating with both anti-slip and protective functions, reducing the direct friction and wear between the steel pipe 8 and the pipe clamp 1, and further enhancing the protective function.

[0032] The following is combined Figure 2-5 The specific configuration of the hollowed-out spot welding area is described in detail below: As a preferred embodiment, refer to Figure 4 The hollowed-out spot welding area 4 includes a plurality of short arc-shaped spot welding holes 41 spaced apart on the two clamping parts 11 along the circumferential direction. By spaced apart on the clamping parts 11, the material of the pipe clamp body 1 can be preserved to a greater extent while meeting the spot welding requirements. This allows the pipe clamp body 1 to maintain good structural strength and rigidity when clamping the steel pipe 8, and it is not easy to deform due to force, thereby continuously and stably clamping the steel pipe and ensuring the stability of the welding process. In addition, the spaced spot welding holes 41 can disperse the stress on the pipe clamp during use. Each spot welding hole 41 corresponds to a specific spot welding position, and the operator can more clearly and accurately locate and weld each weld point, improving the accuracy of the spot welding position and helping to ensure the welding quality.

[0033] As a deformable implementation method, reference Figure 5 The hollowed-out spot welding area 4 includes two elongated arc-shaped spot welding channels 42 continuously arranged along the circumference on the two clamping parts 11. This continuous spot welding channel 42 design provides a larger operating space and a smoother welding path for welding operations. During spot welding, the welding tool can move more quickly and continuously along the spot welding channel without frequent position adjustments, greatly improving the efficiency of spot welding. It is especially suitable for welding tasks that require continuous spot welding or multiple weld points closely arranged. Those skilled in the art can select the specific structure of the hollowed-out spot welding area 4 based on the above description, and other equivalent embodiments will not be described in detail here.

[0034] like Figure 3 As shown, the connecting arm 12 includes a set of arc-shaped arms arranged opposite each other and a connecting groove 13 formed between the set of arc-shaped arms; the operating component 3 includes two pivotally mounted lever handles 31 and a spring component disposed between the two lever handles 31. The two lever handles 31 are respectively fixedly connected to the connecting grooves 13 of the two connecting arms 12. Pressing the two lever handles 31 controls the opening and closing action of the clamp assembly. This structural design, with its arc-shaped arms, optimizes force transmission and structural strength, improves resistance to deformation, and provides a precise fixing space for the lever handles 31 through the connecting grooves 13 (e.g., by welding, bolting, etc.), ensuring a rigid connection between the lever handles 31 and the arc-shaped arms. Utilizing the lever principle, the two pivotally mounted lever handles 31 allow the operator to apply only a small pressing force to amplify the force through the lever, thereby driving the clamp assembly to generate sufficient clamping force. For scenarios requiring frequent opening and closing or clamping of steel pipes for welding, this significantly reduces operational intensity and improves work efficiency.

[0035] In this embodiment, the two pipe clamps 1 are locked in relative position by a locking structure when they are in the mating state. The locking structure is located on the other end of the two clamping parts 11 away from the connecting arm 12. As a preferred embodiment, refer to Figure 6 The locking structure includes two locking blocks 6 disposed opposite to the ends of the two clamping parts 11, and threaded holes corresponding to the two locking blocks 6, as well as a locking member 7 threaded into the threaded holes to fasten the two clamping parts 11. The locking member 7 is a bolt structure. In this structure, the locking bolt is connected through the mechanical engagement of the thread and the threaded hole. After tightening, it can generate a huge preload, making the two clamping parts 11 fit tightly together to form a rigid lock. This locking method can withstand greater radial or axial external forces and is not prone to loosening due to long-term stress or high-frequency vibration. It is especially suitable for thin-walled steel pipes or high-strength operation scenarios where the clamping reliability requirements are extremely high.

[0036] As an alternative to the above-mentioned locking structure, the locking structure includes a locking buckle disposed at the end of one of the clamping parts 11, and a locking groove disposed at the end of the other clamping part 11 and connected to the locking buckle in a snap-fit ​​manner. With this structure, when the two pipe clamps 1 are aligned, a rigid lock can be formed by the snap-fit ​​between the locking buckle and the locking groove, which enhances the clamping stability, ensures the locking reliability, ensures that the clamping parts always remain aligned, prevents the clamping from loosening due to vibration or external force collision, and ensures the accuracy of the steel pipe welding position.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A pipe clamping tool for processing thin-walled steel pipes, characterized in that, include: The clamp assembly includes two symmetrically arranged pipe clamp bodies (1) and a pipe clamp cavity (2) formed by the two pipe clamp bodies (1) together to surround and clamp the steel pipe (8). The two pipe clamp bodies (1) are a hugging structure adapted to the shape of the steel pipe (8), and each includes two clamping parts (11) that fit and connect to the outer wall of the steel pipe, and two connecting arms (12) connected to one end of the two clamping parts (11). The operating component (3) is connected to the connecting arm (12) of the two pipe clamp bodies (1) respectively, and is used to provide a gripping part for operating the pipe clamp tool. The operating component (3) drives the two pipe clamp bodies (1) to open or close relative to each other, and clamps and aligns one end of the two steel pipes (8) by the two pipe clamp bodies (1) closing together. The spot welding avoidance structure includes a hollow spot welding area (4) opened on the clamping part (11) of the two pipe clamps (1) along the welding circumference of the steel pipe (8), and the hollow spot welding area (4) corresponds to the spot welding operation position of the two steel pipes (8).

2. The pipe clamping tool for processing thin-walled steel pipes according to claim 1, characterized in that: The two clamping parts (11) are semi-circular arc structures, and the hollow spot welding area (4) is connected to the pipe clamp cavity (2), so that the end of the two steel pipes (8) clamped by the clamp assembly is exposed in the hollow spot welding area (4).

3. The pipe clamping tool for processing thin-walled steel pipes according to claim 2, characterized in that: The hollow spot welding area (4) includes a plurality of short arc-shaped spot welding holes (41) respectively arranged at intervals on the two clamping parts (11) along the circumferential direction.

4. The pipe clamping tool for processing thin-walled steel pipes according to claim 2, characterized in that: The hollow spot welding area (4) includes two long arc-shaped spot welding channels (42) that are continuously arranged on the two clamping parts (11) along the circumferential direction.

5. The pipe clamping tool for machining thin-walled steel pipes according to any one of claims 1-4, characterized in that: The tube clamp cavity (2) includes two clamping grooves (14) disposed on the inner wall of the two clamping parts (11), and the two clamping grooves (14) are arc groove structures.

6. The pipe clamping tool for processing thin-walled steel pipes according to claim 5, characterized in that: The inner wall of the clamping groove (14) is provided with an anti-slip pad layer (5), which is a rubber pad structure or a silicone pad structure.

7. The pipe clamping tool for processing thin-walled steel pipes according to claim 6, characterized in that: The anti-slip pad layer (5) is composed of an anti-slip coating applied to the inner wall of the clamping groove (14).

8. The pipe clamping tool for processing thin-walled steel pipes according to claim 1, characterized in that: The connecting arm (12) includes a set of arc-shaped arms arranged opposite each other and a connecting groove (13) formed between the set of arc-shaped arms; the operating component (3) includes two pivotally arranged lever handles (31) and a spring member arranged between the two lever handles (31). The two lever handles (31) are respectively fixedly connected in the connecting groove (13) of the two connecting arms (12). Pressing the two lever handles (31) is used to control the opening and closing action of the clamp assembly.

9. The pipe clamping tool for processing thin-walled steel pipes according to claim 1, characterized in that: The two pipe clamps (1) are locked in relative position by a locking structure in the mating state. The locking structure is located on the other end of the two clamping parts (11) away from the connecting arm (12).

10. The pipe clamping tool for processing thin-walled steel pipes according to claim 9, characterized in that: The locking structure includes two locking blocks (6) disposed opposite to the ends of the two clamping portions (11) and screw holes disposed corresponding to the two locking blocks (6), and a locking member (7) threaded into the screw holes to fasten the two clamping portions (11); or, the locking structure includes a locking buckle disposed at the end of one of the clamping portions (11), and a locking groove disposed at the end of the other clamping portion (11) and forming a snap-fit ​​connection with the locking buckle.

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