Welding auxiliary devices and assembly / welding methods

Abstract

This invention belongs to the field of welding technology and discloses a welding auxiliary device and a welding assembly method. The welding auxiliary device includes a straightening assembly and a support plate. The straightening assembly includes a clamping block, which is disposed on the welding test plate and abuts against it along its length. The support plate is disposed on the side of the welding assembly platform and supports the welding test plate. An clearance groove is provided on the support plate to accommodate the FGB gasket. Using this welding auxiliary device, the welding assembly method can enhance the rigidity of the welding test plate, prevent bending deformation during welding, improve welding quality, and eliminate the need for laborious leveling of the welding test plate and automatic welding carriage. The construction process is simple and the welding efficiency is high. Furthermore, it effectively prevents the weld material from sticking to the welding assembly platform below after the FGB gasket is welded through, saving subsequent processing time and steps.

Description

Technical Field

[0001] This invention relates to the field of welding technology, and in particular to a welding auxiliary device and welding method. Background Technology

[0002] FGB single-sided submerged arc welding is a highly efficient submerged arc welding process that uses a ceramic backing containing fiberglass cloth to adhere to the back of the groove and fills the narrow-gap V-shaped groove with iron powder of a certain height to achieve single-sided welding and double-sided forming. FGB single-sided submerged arc welding has high requirements for parameters such as the material cutting accuracy and assembly accuracy of the welding groove, otherwise welding defects such as incomplete penetration, burn-through, and cracks are prone to occur.

[0003] Because the FGB method single-sided submerged arc automatic welding has high welding requirements, a large number of welding process development tests, welding process qualification, welder training, welder examinations, and production tests are required for FGB method single-sided submerged arc automatic welding. All of these require the assembly and welding of FGB method single-sided submerged arc automatic welding test plates. The existing assembly method for single-sided submerged arc welding using the FGB method involves first pre-assembling the two welding test plates and the FGB backing together. Then, a wedge-shaped iron tip is used to support the welding test plates and the rail pad on the assembly platform. The upper surfaces of the welding test plates and the rail pad are leveled by adjusting the wedge-shaped iron tip. The wedge-shaped iron tip is then temporarily welded to the welding test plates and the rail pad to ensure that the upper surfaces of each part are flat and to facilitate the setting of the rail and the submerged arc welding trolley. Finally, the welding trolley is used to weld the welding bevel on the welding test plates. However, this method is complicated, difficult to level, and has a large welding workload, which greatly affects the efficiency of automatic welding. In addition, because the welding test plates are suspended by the wedge-shaped iron tip, they are prone to longitudinal bending deformation during the welding process. Summary of the Invention

[0004] The purpose of this invention is to provide a welding auxiliary device and welding method that eliminates the need for leveling and improves welding stability.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Welding auxiliary equipment, including:

[0007] A straightening assembly, the straightening assembly including a clamping block, the clamping block being disposed on a welding test plate and abutting against the welding test plate along the length direction of the welding test plate;

[0008] A support plate is provided on the side of the welding platform. The support plate is used to support the welding test plate. An avoidance groove is provided on the support plate to accommodate the FGB gasket.

[0009] Preferably, the straightening assembly further includes a stud and a nut, with the stud disposed on the welding test plate and the clamping block passing through the stud and abutting against the welding test plate.

[0010] Preferably, a plurality of studs are evenly arranged along the length of the welding test plate.

[0011] Preferably, the straightening assembly further includes a washer disposed between the nut and the clamping block.

[0012] Preferably, the distance between the upper surface of the support plate and the upper surface of the welding platform is equal to the thickness of the welding test plate.

[0013] Preferably, two support plates are provided, which are spaced apart on the side of the welding platform. The upper surfaces of the two support plates are at the same horizontal height, and the length of the clamping block is less than the distance between the two support plates.

[0014] The welding method, using the aforementioned welding auxiliary device, includes the following steps:

[0015] S1. Install the clamping block on the back of the welding test plate and press the clamping block against the welding test plate;

[0016] S2. The support plate is installed on the side of the welding platform;

[0017] S3. Place the back of the welding test plate on the support plate and adjust the position of the welding test plate so that the FGB pad on the back of the welding test plate is located in the clearance groove, so that the back of the welding test plate makes stable and full contact with the support plate.

[0018] S4. Place the guide rail for the automatic welding trolley on the welding platform and the welding test plate, and adjust the direction of the guide rail so that the length direction of the guide rail is parallel to the extension direction of the welding bevel of the welding test plate.

[0019] S5. Place the automatic welding trolley on the track, start the automatic welding trolley, and weld the welding bevel.

[0020] Preferably, the straightening assembly further includes a stud and a nut, and the installation of the clamping block on the back of the welding test plate in step S1 includes:

[0021] Studs are uniformly welded along the length direction on the back side of the welding test plate;

[0022] The clamping block is inserted through the stud and abuts against the welding test plate;

[0023] Tighten the nut on the stud so that the nut abuts against the clamping block, so that the clamping block is pressed tightly against the welding test plate.

[0024] Preferably, step S2, which involves setting the support plate on the side of the welding platform, includes:

[0025] The two support plates are positioned at the same horizontal level on the side of the welding platform, and the distance between the two support plates is greater than the length of the clamping block.

[0026] Preferably, after welding the weld bevel, the process further includes:

[0027] Remove the straightening assembly.

[0028] The beneficial effects of this invention are as follows:

[0029] The welding auxiliary device provided by this invention features a support plate on the side of the welding platform, allowing welding test plates to be placed on the support plate for welding without the need for leveling and ensuring good stability, thus greatly improving work efficiency. Since the welding test plate is placed on the side of the welding platform, the automatic welding carriage can move on the platform to weld the test plate on the side without the need for leveling, and the automatic welding carriage has good stability, thereby improving welding quality and efficiency. By creating a clearance groove on the support plate to accommodate the FGB gasket, the FGB gasket on the back of the welding test plate can be placed into the clearance groove, ensuring complete and stable contact between the welding test plate and the support plate, thus guaranteeing stability and conductivity between the welding test plate and the support plate, and ensuring welding quality. Furthermore, the presence of a clamping block along the length of the welding test plate enhances its rigidity, preventing longitudinal bending deformation during welding, thereby further improving welding quality.

[0030] The welding method provided by this invention uses a welding auxiliary device to install a clamping block on the back of the welding test plate, which enhances the rigidity of the welding test plate and prevents bending deformation during welding, thereby further improving the welding quality. Placing the welding test plate on the support plate on the side of the welding platform eliminates the need for laborious leveling compared to using wedge-shaped iron tips or other pads, simplifying the construction process and increasing welding efficiency. Furthermore, placing the welding test plate on the support plate on the side of the welding platform effectively prevents the solder from sticking to the welding platform below after the FGB backing has been welded through, saving subsequent processing time and steps. Attached Figure Description

[0031] Figure 1This is a schematic diagram of the pre-assembled welding test plate provided in a specific embodiment of the present invention;

[0032] Figure 2 This is an installation diagram of the straightening component provided in a specific embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the installation of the support plate provided in a specific embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the welding test plate placed on the support plate according to a specific embodiment of the present invention;

[0035] Figure 5 This is an installation diagram of the automatic welding trolley and track provided in a specific embodiment of the present invention.

[0036] In the picture:

[0037] 100 - Welding test plate;

[0038] 200-Welding platform;

[0039] 300-Automatic Welding Cart;

[0040] 400-railway;

[0041] 500-FGB gasket;

[0042] 1-Straightening assembly; 11-Clamping block; 12-Stud; 13-Nut; 14-Washer;

[0043] 2-Support plate; 21-Allowing groove. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0045] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0048] like Figures 1 to 3As shown, the present invention provides a welding auxiliary device, which includes a straightening component 1 and a support plate 2. The straightening component 1 includes a clamping block 11, which is disposed on the welding test plate 100 and abuts against the welding test plate 100 along the length direction of the welding test plate 100. The support plate 2 is disposed on the side of the welding platform 200 and is used to support the welding test plate 100. The support plate 2 has an avoidance groove 21 for accommodating the FGB gasket 500. In this embodiment, since the welding platform 200 has a support plate 2 on its side, the welding test plate 100 can be placed on the support plate 2 for welding without leveling and with good stability, greatly improving work efficiency. Because the welding test plate 100 is placed on the side of the welding platform 200, the automatic welding carriage 300 can move on the welding platform 200 to weld the welding test plate 100 on the side without leveling the automatic welding carriage 300, and the automatic welding carriage 300 has good stability, thereby improving welding quality and welding efficiency. Furthermore, compared to the traditional method of placing wedge-shaped iron tips or pads at the bottom of the welding test plate 100, providing the support plate 2 on the side of the welding platform 200 can effectively prevent over-welding. After the FGB backing 500 is welded through, the solder adheres to the welding platform 200 below. By opening a relief groove 21 on the support plate 2 to accommodate the FGB backing 500, the FGB backing 500 on the back of the welding test plate 100 is placed into the relief groove 21, so that the welding test plate 100 can make complete and stable contact with the support plate 2, thereby ensuring the stability and conductivity between the welding test plate 100 and the support plate 2, and ensuring the welding quality. Since the welding test plate 100 is provided with a clamping block 11 in the length direction, the clamping block 11 abuts against the welding test plate 100, thereby enhancing the rigidity of the welding test plate 100 and preventing longitudinal bending deformation of the welding test plate 100 during the welding process, thereby further improving the welding quality. Specifically, the operator places two welding test plates 100 with welding bevels and two arc-extinguishing plates on the assembly and welding platform 200 for assembly and initial positioning welding. Then, FGB pads 500 are pasted on the back of the two welding test plates 100 at the position opposite the welding bevel, thus forming a pre-assembled welded part.

[0049] Furthermore, such as Figure 2As shown, the straightening assembly 1 also includes a stud 12 and a nut 13. The stud 12 is disposed on the welding test plate 100, and the clamping block 11 passes through the stud 12 and abuts against the welding test plate 100. In this embodiment, the clamping block 11 is a cuboid metal block with a through hole. Before welding, the operator first draws positioning points on the back of the two welding test plates 100 respectively, and welds the stud 12 on the positioning points so that the stud 12 is perpendicular to the welding test plate 100. Then, the operator aligns the through hole on the clamping block 11 with the stud 12 and inserts it into the stud 12. Then, the nut 13 is screwed onto the stud 12 and tightened so that the clamping block 11 abuts against the back of the welding test plate 100. The clamping block 11 is positioned and fixed by the stud 12 and the nut 13, which facilitates disassembly and adjustment, thereby improving the practicality of the welding auxiliary device.

[0050] Specifically, such as Figure 2 As shown, multiple studs 12 are evenly arranged along the length of the welding test plate 100. In this embodiment, multiple studs 12 are evenly welded along the length of the welding test plate 100, which can increase the pressure on the clamping block 11, making the clamping block 11 more stably pressed against the welding test plate 100, improving the clamping effect and ensuring the rigidity of the welding test plate 100.

[0051] Specifically, such as Figure 2 As shown, the straightening assembly 1 also includes a washer 14, which is disposed between the nut 13 and the clamping block 11. In this embodiment, the washer 14 is made of metal and passes through the stud 12. The nut 13 abuts against the clamping block 11 through the washer 14, which increases the force-bearing area, prevents damage to the clamping block 11, and improves the stability of the contact between the two.

[0052] Furthermore, the distance between the upper surface of the support plate 2 and the upper surface of the welding platform 200 is equal to the thickness of the welding test plate 100. Specifically, after the pre-assembled welded parts are placed on the support plate 2, since the distance between the upper surface of the support plate 2 and the upper surface of the welding platform 200 is equal to the thickness of the welding test plate 100, the upper surface of the welding test plate 100 is flush with the upper surface of the welding platform 200, which facilitates the subsequent placement of the track 400 and the automatic welding trolley 300 without the need to level the automatic welding trolley 300 again.

[0053] Furthermore, such as Figure 3 and Figure 4As shown, two support plates 2 are provided, spaced apart on the side of the welding platform 200. The upper surfaces of the two support plates 2 are at the same horizontal height, and the length of the clamping block 11 is less than the distance between the two support plates 2. Specifically, the two support plates 2 support the two ends of the two welding test plates 100 respectively. Since the distance between the two support plates 2 is greater than the length of the clamping block 11, when the pre-assembled welding parts are placed on the support plates 2, the clamping block 11 can be positioned between the two support plates 2, thereby ensuring that the welding test plate 100 and the support plates 2 can be in stable contact. Specifically, the support plates 2 are made of metal. The contact between the support plates 2 and the welding test plates 100 forms a welding circuit between the automatic welding carriage 300, the welding platform 200, and the welding test plates 100, ensuring that the welding is carried out normally and stably.

[0054] like Figure 4 and Figure 5 As shown, this embodiment also provides a welding method using the above-mentioned welding auxiliary device, including the following steps:

[0055] S1. Install clamping blocks 11 on the back of the welding test plate 100 and press the clamping blocks 11 against the welding test plate 100. In this embodiment, the operator installs clamping blocks 11 on the back of the two welding test plates 100 respectively, thereby enhancing the rigidity of the welding test plate 100 and preventing the welding test plate 100 from bending and deforming during the welding process.

[0056] S2. A support plate 2 is provided on the side of the welding platform 200. In this embodiment, the support plate 2 is welded on the side of the welding platform 200 to support the welding test plate 100.

[0057] S3. Place the back of the welding test plate 100 on the support plate 2, and adjust the position of the welding test plate 100 so that the FGB pad 500 on the back of the welding test plate 100 is located in the clearance groove 21, so that the back of the welding test plate 100 is in stable and sufficient contact with the support plate 2. In this embodiment, the operator places the back of the welding test plate 100 on the support plate 2 and adjusts the position of the welding test plate 100 so that the FGB pad 500 is located in the clearance groove 21, so that the support plate 2 can provide stable support for the welding test plate 100 and ensure the stability of the welding process.

[0058] S4. Place the guide rail 400 that guides the automatic welding trolley 300 on the welding platform 200, and adjust the direction of the guide rail 400 so that the length direction of the guide rail 400 is parallel to the extension direction of the welding bevel of the welding test plate 100. In this embodiment, when the support plate 2 is installed, the distance between the upper surface of the support plate 2 and the upper surface of the welding platform 200 is equal to the thickness of the welding test plate 100. Therefore, when the welding test plate 100 is placed on the support plate 2, the upper surface of the welding test plate 100 is flush with the upper surface of the welding platform 200. Specifically, the operator places the rail 400 on the welding test plate 100 and the welding platform 200 along the welding bevel extension direction parallel to that of the welding test plate 100. This allows the automatic welding carriage 300 to approach the welding bevel for welding, avoiding exceeding the operating range of the automatic welding carriage 300 due to excessive distance. At the same time, since the upper surface of the welding test plate 100 is flush with the upper surface of the welding platform 200, there is no need to laboriously level the rail 400 and the automatic welding carriage 300, which greatly improves welding efficiency.

[0059] S5. Place the automatic welding carriage 300 on the track 400, start the automatic welding carriage 300, and weld the welding bevel. In this embodiment, the operator places the automatic welding carriage 300 on the track 400 and adjusts the height and position of the welding gun on the automatic welding carriage 300, and then starts the automatic welding carriage 300 to weld the two welding test plates 100.

[0060] Furthermore, the straightening assembly 1 also includes a stud 12 and a nut 13. The step S1 of installing the clamping block 11 on the back of the welding test plate 100 includes: uniformly welding the stud 12 along the length direction on the back of the welding test plate 100; passing the clamping block 11 through the stud 12 and abutting against the welding test plate 100; and screwing the nut 13 onto the stud 12 so that the nut 13 abuts against the clamping block 11 so that the clamping block 11 is tightly attached to the welding test plate 100. In this embodiment, the clamping block 11 is a rectangular metal block with through holes. Before welding, the operator first draws multiple positioning points evenly on the back of the two welding test plates 100, and welds studs 12 on the positioning points so that the studs 12 are perpendicular to the welding test plates 100. Then, the operator aligns the through holes on the clamping block 11 with the studs 12 and inserts them into the studs 12. Subsequently, the nut 13 is screwed onto the studs 12 and tightened so that the clamping block 11 is pressed against the back of the welding test plate 100. The clamping block 11 is positioned and fixed by the studs 12 and the nut 13, which facilitates disassembly and adjustment, thereby improving the practicality of the welding auxiliary device.

[0061] Further, step S2, which involves setting support plates 2 on the side of the welding platform 200, includes: setting two support plates 2 at the same horizontal height on the side of the welding platform 200, and ensuring that the distance between the two support plates 2 is greater than the length of the clamping block 11. In this embodiment, the operator welds the two support plates 2 alternately to the side of the welding platform 200. The two support plates 2 respectively support the two ends of the two welding test plates 100. Since the distance between the two support plates 2 is greater than the length of the clamping block 11, when the pre-assembled welded parts are placed on the support plates 2, the clamping block 11 can be located between the two support plates 2, thereby ensuring that the welding test plate 100 and the support plates 2 can be in stable contact. Specifically, the support plates 2 are made of metal, and the contact between the support plates 2 and the welding test plates 100 forms a welding circuit between the automatic welding carriage 300, the welding platform 200, and the welding test plates 100, ensuring that the welding is carried out normally and stably.

[0062] Furthermore, after welding the weld bevel, the process also includes removing the straightening assembly 1. In this embodiment, after welding is completed, the operator unscrews the nut 13 from the stud 12, and then removes the clamping block 11 from the stud 12; afterwards, the operator uses a steel pipe to fit over the stud 12 and forcefully bends the stud 12, repeating this several times until the stud 12 is broken off at the root, thereby removing the straightening assembly 1 from the welding test plate 100; the removed stud 12, nut 13, and clamping block 11 can still be used for the next welding.

[0063] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A welding method, characterized in that, Using welding auxiliary equipment, the welding auxiliary equipment includes: A straightening assembly (1) includes a clamping block (11) which is disposed on a welding test plate (100) and abuts against the welding test plate (100) along the length direction of the welding test plate (100); Support plate (2), the support plate (2) is set on the side of the welding platform (200), the support plate (2) is used to support the welding test plate (100), and the support plate (2) is provided with a relief groove (21), the relief groove (21) is used to accommodate the FGB gasket (500). The straightening assembly (1) also includes a stud (12) and a nut (13). The stud (12) is disposed on the welding test plate (100), and the clamping block (11) passes through the stud (12) and abuts against the welding test plate (100). There are two support plates (2), which are spaced apart on the side of the welding platform (200). The upper surfaces of the two support plates (2) are at the same horizontal height, and the length of the clamping block (11) is less than the distance between the two support plates (2). Includes the following steps: S1. Install the clamping block (11) on the back of the welding test plate (100) and press the clamping block (11) against the welding test plate (100); S2. The support plate (2) is provided on the side of the welding platform (200); S3. Place the back of the welding test plate (100) on the support plate (2), adjust the position of the welding test plate (100) so that the FGB pad (500) on the back of the welding test plate (100) is located in the clearance groove (21) so that the back of the welding test plate (100) makes stable and full contact with the support plate (2); S4. Place the guide rail (400) that guides the automatic welding trolley (300) on the welding platform (200) and adjust the direction of the guide rail (400) so that the length direction of the guide rail (400) is parallel to the extension direction of the welding bevel of the welding test plate (100). S5. Place the automatic welding trolley (300) on the track (400), start the automatic welding trolley (300), and weld the welding bevel; The straightening assembly (1) further includes a stud (12) and a nut (13). Step S1, installing the clamping block (11) on the back of the welding test plate (100), includes: Studs (12) are uniformly welded along the length direction on the back side of the welding test plate (100); The clamping block (11) is inserted through the stud (12) and abuts against the welding test plate (100); Tighten the nut (13) on the stud (12) so that the nut (13) abuts against the clamping block (11) so that the clamping block (11) is pressed against the welding test plate (100); Step S2, which involves setting the support plate (2) on the side of the welding platform (200), includes: The two support plates (2) are set on the side of the welding platform (200) at the same horizontal height, and the distance between the two support plates (2) is greater than the length of the clamping block (11); After welding the aforementioned weld bevel, the process further includes: Remove the straightening component (1).

2. The welding method according to claim 1, characterized in that, Multiple studs (12) are evenly arranged along the length of the welding test plate (100).

3. The welding method according to claim 1, characterized in that, The straightening assembly (1) also includes a gasket (14) disposed between the nut (13) and the clamping block (11).

4. The welding method according to claim 1, characterized in that, The distance between the upper surface of the support plate (2) and the upper surface of the welding platform (200) is equal to the thickness of the welding test plate (100).

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