Welding tool for positioning angles of multiple bent pipes

Abstract

The utility model relates to the technical field of bent pipe welding, in particular to a welding tool for positioning multiple bent pipes in angular directions, which comprises a limit block and a mounting plate, bent pipe welding counterbores are respectively arranged at two ends of the mounting plate, one end of each bent pipe is inserted into the corresponding bent pipe welding counterbore, the other end of each bent pipe is inserted into a process notch arranged on the limit block, and the limit block is arranged on the mounting plate. Limiting blocks are fixedly arranged at the two ends of the mounting plate respectively. The welding tool for positioning the multiple bent pipes in the angular direction is simple and practical, the bent pipes can be quickly and accurately positioned and fixed to the mounting plate, a stable foundation is provided for follow-up welding work, the welding precision and efficiency are effectively improved, and the risk that the positions and the angular directions of the bent pipes deviate in the welding process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipe bending welding technology, specifically to a welding fixture for positioning multiple pipe bends at different angles. Background Technology

[0002] In modern industrial manufacturing, especially in the production of precision structural components, welding technology, as an efficient and reliable connection method, is widely used in the manufacture of various metal components. Among numerous welding applications, it is particularly common to encounter situations where multiple bends need to be welded to both sides of a mounting plate, and these bends have specific positional and angular requirements relative to the mounting plate. For example... Figure 2 The mounting plate 4 shown in the figure has a bent pipe welding countersunk hole 41 at both ends. One end of the bent pipe is welded to the bent pipe welding countersunk hole 41, and the other end has a specific angular requirement. Such products often have extremely high requirements for the dimensional accuracy, angular accuracy and overall structural stability after welding.

[0003] During welding, deformation of the welded parts is inevitable due to thermal stress. For precision products, this deformation can severely affect assembly accuracy and final performance. Controlling welding deformation is particularly crucial when mounting plates require high precision, post-weld secondary processing is difficult, and dimensional accuracy requirements are extremely stringent. Failure to effectively control the angularity and spacing of bends during welding can not only lead to difficulties in subsequent assembly but may also prevent the product from meeting design requirements, resulting in resource waste and low production efficiency.

[0004] Traditional welding methods often struggle to simultaneously meet the demands of high precision requirements, such as accurate angular positioning, dimensional accuracy control, and welding deformation control. Operators typically need extensive experience and exceptional skills to ensure welding quality through repeated adjustments and corrections. This not only increases the difficulty and labor intensity of welding but also makes it difficult to guarantee the consistency and stability of weld quality.

[0005] Furthermore, with the continuous development of industrial manufacturing technology, the requirements for welding efficiency are becoming increasingly stringent. Improving welding efficiency, shortening production cycles, and reducing production costs while ensuring welding quality have become pressing issues for the manufacturing industry. Therefore, developing a welding fixture specifically designed for welding multiple bends on both sides of an mounting plate, capable of effectively controlling the bend angle and distance, and improving welding efficiency and quality, has significant practical implications and application value. Utility Model Content

[0006] To address the aforementioned issues, this invention provides a welding fixture for positioning multiple bends at different angles. This fixture is simple and practical, enabling quick and accurate positioning and fixing of bends onto the mounting plate. It provides a stable foundation for subsequent welding work, effectively improving welding accuracy and efficiency, and reducing the risk of deviations in bend position and angle during the welding process.

[0007] The technical solution of this utility model is as follows:

[0008] A welding fixture for positioning multiple bent pipes at an angle includes a limiting block and a mounting plate. The mounting plate has countersunk holes for bent pipe welding at both ends. One end of the bent pipe is inserted into the countersunk hole for bent pipe welding, and the other end of the bent pipe is inserted into a process notch provided on the limiting block. The limiting blocks are fixedly provided at both ends of the mounting plate.

[0009] The process notch is a "U" shaped notch.

[0010] Threaded holes are machined at both ends of the mounting plate, and bolt holes are machined on the limit block. After the screw passes through the bolt hole, it engages with the threaded hole to fix the limit block on the mounting plate.

[0011] The limiting block and the mounting plate are machined with matching positioning pin holes I and II, and positioning pins are installed in positioning pin holes I and II.

[0012] The countersunk hole of the bent pipe is clearance-fitted with one end of the bent pipe.

[0013] The process notch and the other end of the bend are clearance fit.

[0014] Optionally, the surface of the limiting block is coated with a thermally conductive coating.

[0015] Optionally, the limiting block is made of a material with high thermal conductivity.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model discloses a welding fixture for positioning multiple bends at angles. This welding fixture for positioning multiple bends at angles is simple and practical. It can quickly and accurately position and fix the bends on the mounting plate, providing a stable foundation for subsequent welding work, effectively improving the accuracy and efficiency of welding, and reducing the risk of deviation in the position and angle of the bends during the welding process.

[0018] 2. This utility model discloses a welding fixture for positioning multiple bends at an angle. The welding fixture for positioning multiple bends at an angle has a process notch designed as a "U" shape. This notch shape can better match the shape of the bend, providing a more stable and accurate positioning for the bend. At the same time, the "U" shape notch has a more obvious restrictive effect on the bend during the positioning process, which helps to further improve the accuracy of bend positioning, reduce the shaking of the bend during welding, and ensure welding quality.

[0019] 3. This utility model discloses a welding fixture for locating multiple bends at an angular direction. The fixture has a thermally conductive coating on the surface of the limiting block. This coating has high thermal conductivity, enabling it to quickly conduct heat generated during welding away from the surface of the limiting block. This helps reduce the temperature of the limiting block, minimizing deformation caused by temperature rise, thus ensuring the stability of the bend positioning at an angular direction. Simultaneously, the thermally conductive coating also improves the heat dissipation efficiency of the limiting block, extending the service life of the fixture.

[0020] 4. This utility model discloses a welding fixture for positioning multiple bends at an angular direction. The limiting blocks of this welding fixture for positioning multiple bends at an angular direction are made of high thermal conductivity materials, such as aluminum alloys and copper alloys. High thermal conductivity materials can quickly conduct away the heat generated during the welding process, effectively reducing the temperature of the limiting blocks and reducing the impact of thermal stress on the limiting blocks. This not only ensures the shape and dimensional accuracy of the limiting blocks, thereby maintaining the positioning angular accuracy of the bends, but also reduces the risk of damage to the limiting blocks due to thermal deformation, improving the reliability and service life of the fixture. In addition, the use of high thermal conductivity materials can also accelerate the heat dissipation rate of the welding area to a certain extent, reduce welding deformation, and improve welding quality. Attached Figure Description

[0021] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0022] In the attached diagram:

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a welding fixture for positioning multiple bent pipes at an angle, according to an embodiment of this utility model.

[0024] Figure 2 This is a three-dimensional structural diagram of the mounting plate of a welding fixture for positioning multiple bent pipes in an angular direction, according to an embodiment of the present utility model.

[0025] Figure 3 This is a three-dimensional structural diagram of a limiting block for a welding fixture with multiple bends positioned at an angle, according to an embodiment of the present invention.

[0026] Figure 4 This is a schematic diagram of the welding position after the welding fixture for positioning multiple bends at an angle is assembled according to an embodiment of the present invention.

[0027] The components represented by the various reference numerals in the diagram are:

[0028] This utility model includes: 1. Limiting block, 11. Positioning pin hole I, 12. Bolt hole, 13. Process notch, 2. Screw, 3. Positioning pin, 4. Mounting plate, 41. Countersunk hole for welding bent pipe, 42. Threaded hole, 43. Positioning pin hole II, 5. Bent pipe, 6. Position to be welded. Detailed Implementation

[0029] The welding fixture for positioning multiple bends at angles is designed to solve problems such as ensuring accurate positioning of the bends, correct angle, and controlling welding deformation when welding multiple bends with angular requirements on both sides of a mounting plate. For example... Figure 1 As shown, the tooling mainly includes a limiting block 1, screws 2, positioning pins 3, mounting plate 4, and a bent pipe 5.

[0030] like Figure 2 As shown, the mounting plate 4 is the basic component of the entire tooling. It has two ends with countersunk holes 41 for welding bent pipes. The size of the countersunk holes 41 is designed according to the diameter of the bent pipe 5. The countersunk holes 41 and one end of the bent pipe 5 are clearance fit, with the clearance range controlled between 0.05 and 0.1 mm. This fit method facilitates the insertion of the bent pipe 5, ensures a certain assembly accuracy, and can accommodate a certain manufacturing error, thereby reducing the requirements for the machining accuracy of the bent pipe 5 and the countersunk holes 41.

[0031] Threaded holes 42 are machined at both ends of the mounting plate 4 to mate with bolt holes 12 on the limiting block 1, thereby fixing the limiting block 1 and the mounting plate 4 together with screws 2. In addition, positioning pin holes II 43 are machined on the mounting plate 4 to mate with positioning pin holes I 11 on the limiting block 1, for installing positioning pins 3, thereby further improving the positioning accuracy between the limiting block 1 and the mounting plate 4.

[0032] In this embodiment, the limiting block 1 can be made of a high thermal conductivity material, such as aluminum alloy, or it can be coated with a thermally conductive coating, which is a graphene coating with a thickness of 5-10 μm.

[0033] High thermal conductivity materials or thermally conductive coatings can quickly conduct away the heat generated during the welding process, effectively reducing the temperature of the limiting block 1 and the mounting plate 4, reducing the impact of thermal stress on the limiting block 1 and the mounting plate 4, ensuring the stability of the bend positioning angle, and extending the service life of the tooling.

[0034] like Figure 3As shown, the limiting block 1 has bolt holes 12 machined on it, which correspond to the threaded holes 42 on the mounting plate 4. The screw 2 passes through the bolt holes 12 and engages with the threaded holes 42 to fix the limiting block 1 on the mounting plate 4. The limiting block 1 also has a positioning pin hole I 11 machined on it, which engages with the positioning pin hole II 43 on the mounting plate 4 to install the positioning pin 3.

[0035] The limiting block 1 is provided with a process notch 13, which is a "U"-shaped notch in this embodiment. The size of the "U"-shaped notch is designed according to the shape and size of the bend 5, and the process notch 13 and the other end of the bend 5 are in clearance fit, with the clearance range controlled between 0.03-0.08mm. This fit can better adapt to the shape of the bend 5, provide more stable and accurate positioning for the bend 5, and reduce the shaking of the bend 5 during welding, thus ensuring welding quality.

[0036] Screw 2 is used to fix the limiting block 1 to the mounting plate 4. Its specifications are selected according to the size of the bolt hole 12 on the limiting block 1 and the threaded hole 42 on the mounting plate 4. During installation, after the screw 2 passes through the bolt hole 12 on the limiting block 1, it engages with the threaded hole 42 on the mounting plate 4 to achieve a reliable connection between the limiting block 1 and the mounting plate 4.

[0037] The positioning pin 3 is installed in the positioning pin hole I11 on the limiting block 1 and the positioning pin hole II43 on the mounting plate 4 to further improve the positioning accuracy between the limiting block 1 and the mounting plate 4. The size of the positioning pin 3 is designed according to the size of the positioning pin hole I11 and the positioning pin hole II43 to ensure that the positioning pin 3 can be accurately inserted into the positioning pin hole and prevent the limiting block 1 from shifting during the welding process.

[0038] The bend 5 is the part to be welded. Its material can be stainless steel, aluminum alloy or titanium alloy, etc., depending on the product's usage requirements. One end of the bend 5 is inserted into the bend welding countersunk hole 41 on the mounting plate 4, and the other end is inserted into the process notch 13 on the limiting block 1. Through the combined action of the limiting block 1 and the mounting plate 4, the positioning angle of the bend 5 is achieved.

[0039] How to use welding fixtures for positioning multiple bends at an angle:

[0040] First, place the two limiting blocks 1 at both ends of the mounting plate 4, aligning the positioning pin holes I11 on the limiting blocks 1 with the positioning pin holes II43 on the mounting plate 4. Then, insert the positioning pins 3 to ensure accurate positioning between the limiting blocks 1 and the mounting plate 4. Next, pass the screws 2 through the bolt holes 12 on the limiting blocks 1 and thread them into the threaded holes 42 on the mounting plate 4. Gradually tighten the screws 2 to firmly fix the limiting blocks 1 onto the mounting plate 4. Insert one end of the bent pipe 5 into the bent pipe welding countersunk hole 41 on the mounting plate 4, and the other end into the process notch 13 on the limiting blocks 1. Adjust the position and angle of the bent pipe 5 to meet the design requirements. Figure 4 As shown, argon arc welding is used to tack weld the position 6 of the bend 5 to ensure that the bend 5 will not move during the welding process. Then, the subsequent welding work is carried out with the tooling. During the welding process, since the limiting block 1 is made of a high thermal conductivity material or has a thermally conductive coating on its surface, it can quickly dissipate the heat generated by welding, reduce thermal stress, and reduce welding deformation.

[0041] After welding is completed, after the tooling has cooled down, remove screw 2 and positioning pin 3, remove limit block 1 from mounting plate 4, and then use tooling to re-measure the angle and distance of bend 5. If it does not meet the design requirements, post-weld correction can be performed to ensure product quality.

[0042] The welding fixtures for positioning multiple bends in the angular direction of this embodiment have the following technical advantages:

[0043] Accurate positioning: The bending pipe 5 can be accurately positioned angularly by the process notch 13 on the limiting block 1 and the countersunk hole 41 for welding the bending pipe on the mounting plate 4, ensuring the welding position and angular accuracy of the bending pipe 5.

[0044] Reliable connection: The limiting block 1 is fixed to the mounting plate 4 by screws 2 and positioning pins 3. The connection is firm and reliable and can withstand the force and torque during the welding process, preventing the limiting block 1 from shifting.

[0045] Good heat dissipation: The limiting block 1 is made of high thermal conductivity material or has a thermally conductive coating on its surface, which can quickly dissipate the heat generated by welding, reduce thermal stress, reduce welding deformation, and ensure the flatness of the mounting plate after welding.

[0046] Wide range of applications: This tooling is suitable for welding of stainless steel, aluminum alloy or titanium alloy bends 5, and can be used for welding different types of mounting plates and bends 5, with high versatility.

[0047] Easy to operate: The tooling structure is simple, and it is easy to install and disassemble. It can quickly realize the positioning and assembly of the bend 5, improve welding efficiency, and reduce the labor intensity of workers.

Claims

1. A welding fixture for positioning multiple bent pipes at an angular direction, characterized in that, The device includes a limiting block (1) and a mounting plate (4). The mounting plate (4) has a bend welding countersunk hole (41) at both ends. One end of the bend (5) is inserted into the bend welding countersunk hole (41), and the other end of the bend (5) is inserted into the process notch (13) on the limiting block (1). The limiting block (1) is fixedly installed at both ends of the mounting plate (4).

2. The welding fixture for positioning multiple bends at an angle according to claim 1, characterized in that, The process notch (13) is a "U" shaped notch.

3. The welding fixture for positioning multiple bends at an angle according to claim 1, characterized in that, Threaded holes (42) are machined at both ends of the mounting plate (4), and bolt holes (12) are machined on the limiting block (1). After the screw (2) passes through the bolt hole (12), it engages with the threaded hole (42) to fix the limiting block (1) on the mounting plate (4).

4. The welding fixture for positioning multiple bends at an angle according to claim 3, characterized in that, The limiting block (1) and the mounting plate (4) are machined with matching positioning pin holes I (11) and II (43), and positioning pins (3) are installed in positioning pin holes I (11) and II (43).

5. The welding fixture for positioning multiple bends at an angle according to claim 1, characterized in that, The countersunk hole (41) of the bent pipe is clearance-fitted with one end of the bent pipe (5).

6. The welding fixture for positioning multiple bends at an angle according to claim 2, characterized in that, The process notch (13) and the other end of the bend (5) are in clearance fit.

7. The welding fixture for positioning multiple bends at an angle according to claim 1, characterized in that, The surface of the limiting block (1) is coated with a thermally conductive coating.

8. The welding fixture for positioning multiple bends at an angle according to claim 1, characterized in that, The limiting block (1) is made of a material with high thermal conductivity.

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