Arc-shaped plate welding method

Abstract

The invention relates to the technical field of arc-shaped plate machining, in particular to an arc-shaped plate welding method which comprises the following machining steps that two arc-shaped plates are obtained and placed on the top face of a positioning seat; the visual identification part is used for monitoring the welding seam condition, obtaining the welding seam size and the welding seam position, judging an error value and feeding parameters back to the central system; the positions of the two ends of the two arc-shaped plates are calibrated and fixed through the first limiting mechanism; making a light positioning point in the length direction of the welding seam through an infrared device; the second limiting mechanism comprises a transverse limiting piece and a longitudinal limiting piece, the transverse limiting piece clamps the front faces and the back faces of the two arc-shaped plates, meanwhile, the longitudinal limiting piece is aligned with a light ray positioning point, and the longitudinal limiting piece applies pressure to the two arc-shaped plates in the longitudinal direction; the arc-shaped plate welding method can improve the welding quality of the arc-shaped plate by aligning the welding line with the welding equipment to achieve welding and polishing the welding line to obtain the welding part.

Description

Technical Field

[0001] The present application relates to the technical field of arc plate processing, and in particular to a arc plate welding method. Background Art

[0002] Curved aluminum sheets, a key foundational material, are widely used in the manufacture of industrial products with curved cross-sections, such as curtain wall decoration and container shells. To meet the demands of varying sizes and specifications, the production process often requires joining multiple curved sheets together through side welding. The quality of these welds directly impacts the structural integrity and mechanical properties of the finished product.

[0003] In the existing welding process, in order to improve the welding quality and strength of the weld, the weld gap needs to be adjusted. The adjustment process is mainly achieved by extrusion to achieve positioning. When performing submerged arc welding operations, the flux needs to be released to cover the weld position, and with the assistance of the flux, the welding wire is melted in the flux covering layer to complete the welding.

[0004] However, it is difficult to control and ensure the size and stability of the weld gap by rigidly extruding and gathering the plates, which can easily lead to the completion of welding operations without meeting the weld gap requirements, greatly reducing the quality and strength of the weld, making it easy for weld leaks and cold welds to occur, and increasing the amount of subsequent repair welding rework. Summary of the Invention

[0005] In order to improve the welding quality of arc plates, the present application provides an arc plate welding method.

[0006] This application provides a method for welding curved plates, which adopts the following technical solutions: A method for welding an arc plate includes the following processing steps: Obtain two curved plates and place them on the top surface of the positioning seat.

[0007] Monitor the weld condition through visual recognition, obtain weld size and position, determine error values, and feed back parameters to the central system.

[0008] The positions of both ends of the two arc-shaped plates are calibrated and fixed by the first limiting mechanism.

[0009] Light positioning points are made along the length direction of the weld by an infrared device.

[0010] The second limiting mechanism includes a transverse limiting member and a longitudinal limiting member. The transverse limiting member clamps the front and back sides of the two arc-shaped plates, while the longitudinal limiting member aligns with the light positioning point and applies longitudinal pressure to the two arc-shaped plates.

[0011] The welding is carried out by aligning the weld with welding equipment, and the weld is polished to obtain a welded part.

[0012] By adopting the above technical solution, the visual recognition part is used to monitor the weld condition in real time, accurately obtain the weld size and position, and judge the error value. The degree of adaptation between the actual weld condition and the parameters is calibrated before welding. The first limiting mechanism calibrates and fixes the two ends of the arc plate, effectively reducing the position offset during the welding process. With the cooperation of the infrared device, a precise reference line is provided for the second limiting mechanism and the welding equipment. The horizontal and vertical limiting parts are used to stably clamp the arc plate in all directions, further ensuring the stability and accuracy of the welding. The infrared positioning is not only fast but also accurate, which significantly improves the accuracy and consistency of welding. Finally, the welding equipment is used to align the weld to realize automated welding, and the weld is polished to obtain a welded part.

[0013] Compared with the existing technology, this application reduces the errors of human operation through visual recognition, double limiting, infrared positioning and automated welding and polishing processing steps, ensures the consistency of the size of the weld gap between the arc plates, makes the splicing accuracy higher and the stability stronger, and achieves high precision, high efficiency and high quality of arc plate welding.

[0014] Preferably, in the processing steps of calibrating and fixing the two end positions of the two arc-shaped plates by means of a first limiting mechanism, the first limiting mechanism includes two limiting components, which are respectively installed at the two ends of the positioning seat, and the limiting components include a baffle, a slide and a pressure piece, wherein the baffle is slidably connected to the slide, and the pressure piece is movably arranged on the side wall of the baffle for pressing the end of the arc-shaped plate.

[0015] By adopting the above technical solution, the baffle is slidably connected to the slide seat and can be fine-tuned according to the specific size and shape of the arc plate. The movable setting of the pressure piece ensures that the clamping force is uniform and controllable. The end of the arc plate is pressed by the pressure piece, which effectively reduces the warping or movement of the end of the arc plate during the welding process, helps to improve the docking accuracy of the two plates, ensures the continuity and uniformity of the weld, and thus greatly improves the welding quality and structural strength.

[0016] Preferably, in the processing step of pressing the end of the arc-shaped plate by the pressing member, the pressing member includes a pressing block, a rotating shaft and a connecting torsion spring, wherein the pressing block is installed on the side wall of the baffle through the rotating shaft, one end of the connecting torsion spring is assembled with the pressing block, and the other end is assembled with the rotating shaft, and the end of the pressing block away from the baffle presses against the end of the arc-shaped plate.

[0017] By adopting the above technical solution, the pressure piece consists of a pressure block, a rotating shaft and a connecting torsion spring. The pressure block is installed on the side wall of the baffle through the rotating shaft. The connecting torsion spring provides a continuous and uniform pressing force for the pressure block, so that the end of the arc plate can be pressed, which reduces the movement or dislocation of the arc plate during the welding process and ensures the continuity and quality of the weld.

[0018] Preferably, in the processing step of making light positioning points along the length direction of the weld by an infrared device, the weld condition is monitored by a visual recognition component, and the central system calculates the position of the light positioning points after obtaining information, and determines that the light positioning points set on both sides of the weld are spaced and not arranged directly opposite each other, and light is transmitted at the light positioning points by an infrared device.

[0019] By adopting the above technical solution, the visual recognition component monitors the weld condition in real time, and combined with the calculation of the central system, it can accurately determine the position of the light positioning point, providing a reliable position reference for the subsequent assembly between the longitudinal limit member and the curved plate of the second limit mechanism. Light positioning points are set on both sides of the weld, and an interval and non-opposite arrangement is adopted, so that the longitudinal limit member and the transverse limit member can be staggered and reinforced, presenting an "N"-shaped mechanical distribution structure. The curved plate in the area near the weld can be stably reinforced, improving the extrusion stability of the two, ensuring the stability of the weld during welding, and reducing the occurrence of leaking welds and cold welds.

[0020] Preferably, in the processing step of the transverse limit member clamping the front and back surfaces of the two arc plates, the positioning seat includes guide rails arranged on the top surfaces of both sides thereof, and the extension direction of the guide rails is consistent with the length direction of the positioning seat, and the transverse limit member includes a guide wheel, a mounting seat, a connecting shaft and a pressure roller, and the guide wheel is correspondingly slid on the inner top surface of the guide rail, the guide wheel has a central axis, and the central axis is simultaneously slid into the side wall of the guide rail close to it, one end of the central axis is connected to the mounting seat through a bearing, and the connecting shaft is simultaneously connected to the two mounting seats by bearings, and the connecting shaft is consistent with the axis of the central axis, and the pressure roller is installed on the mounting seat, and the pressure roller and the connecting shaft are arranged parallel to each other, and a mounting gap is left between the two.

[0021] By adopting the above technical solution, the guide wheel is driven to drive the mounting seat, connecting shaft and pressure roller to move smoothly along the length direction of the guide rail. During the rotation of the guide wheel, the connecting shaft can rotate synchronously. With the cooperation of the connecting shaft and the pressure roller, the arc plate can be clamped horizontally, further enhancing the stability between the two plates, narrowing the weld seam, reducing the shaking or offset of the arc plate during welding, and achieving high-quality welding.

[0022] Preferably, in the processing step of grinding the weld, a grinding roller is provided on the mounting seat, the grinding roller, the pressure roller and the connecting shaft are arranged in parallel, and an installation gap is also reserved between the grinding roller and the connecting shaft.

[0023] By adopting the above technical solution, the grinding roller is arranged on the mounting seat, making the entire structure more compact. The installation gap reserved between the grinding roller and the connecting shaft is for the arc plate to pass through. The operator can change the position of the grinding roller or the pressure roller to meet different requirements of grinding or welding.

[0024] Preferably, when the longitudinal limit member applies longitudinal pressure to the two curved plates, the longitudinal limit member includes a connecting rod and a longitudinal pressure head, one end of the connecting rod is assembled on the top surface of the mounting seat, and an angle is left between the extension line of the connecting rod and the extension line of the connecting shaft, and the longitudinal pressure head is assembled on the end of the connecting rod away from the mounting seat, and the bottom end of the longitudinal pressure head presses against the top surface of the curved plate.

[0025] By adopting the above technical solution, the connecting rod and the longitudinal pressure head are assembled, so that the longitudinal limiter can stably apply longitudinal pressure to the arc plate, further reducing the longitudinal movement or dislocation of the arc plate during welding, and improving the stability of the arc plate welding process.

[0026] Preferably, when the bottom end of the longitudinal pressure head is pressed against the top surface of the arc plate, the angle A is calculated, cosA=a / c=x, A=arccos(x), where a refers to the length of the connecting shaft, c refers to the length of the connecting rod, and 30°≤A≤90°.

[0027] By adopting the above technical solution, the value of the angle A is determined according to the length a of the connecting shaft and the length c of the connecting rod, so as to achieve precise control of the pressure angle, ensure the effective transmission of the welding force, and make the longitudinal pressure provided by the longitudinal limiter more evenly distributed on both sides of the weld, thereby improving the extrusion stability of the two plates, thereby ensuring the stability of the weld during welding and reducing the occurrence of leaking welds and cold welds.

[0028] Preferably, before welding, the surface to be welded is pre-treated so that a zigzag weld is formed between the two arc-shaped plates.

[0029] By employing this technical solution, pretreatment creates a zigzag weld between the curved plates. This increases the weld's joint area and complexity, allowing the molten metal to more fully fill and bond during welding, thereby enhancing the weld's joint strength and improving the overall stability of the welded structure. Furthermore, the zigzag shape provides a better flow path for the molten metal during welding, facilitating the discharge of gases and impurities, thereby optimizing the weld's internal quality and helping to reduce potential defects during the welding process.

[0030] Preferably, the step of grinding the weld seam further includes the following steps: Use acetone or alkaline degreaser to remove oil and moisture from the weld surface.

[0031] Rinse any acetone or alkaline degreaser residue from the weld surface with water.

[0032] The air blowing and chip removal are performed by air blowing components installed on the mounting seat.

[0033] The arc-shaped plate passes through the installation gap between the connecting shaft and the pressure roller to drive the connecting shaft and / or the pressure roller to rotate, and a grease object is applied on the weld during the process.

[0034] By adopting the above technical solution, acetone or alkaline degreaser is used to remove oil and moisture from the weld surface to ensure the purity of the weld in subsequent processing. Then, water is used to rinse to remove residual degreaser, further improving the cleaning effect. This double cleaning mechanism provides more ideal surface conditions for subsequent weld processing. The air blowing part on the mounting base is used to blow away chips and exhaust chips to reduce the debris and dust generated during the grinding process, reducing the adverse effects of debris on weld quality.

[0035] In the process of driving the connecting shaft and / or the pressure roller to rotate, grease is applied to the weld to provide the necessary heat dissipation and impurity removal for the weld, thereby preventing oxidation and corrosion of the weld to a certain extent and improving the quality of the finished product.

[0036] In summary, this application includes at least one of the following beneficial technical effects: 1. This application reduces human operation errors through visual recognition, double limit, infrared positioning, and automated welding and grinding processing steps, ensuring the consistency of the weld gap between the curved plates, making the splicing accuracy higher and the stability stronger, and achieving high-precision, high-efficiency, and high-quality arc plate welding; 2. Light positioning points are set on both sides of the weld, and are arranged at intervals and not directly opposite each other, so that the longitudinal and transverse limiters can be staggered and reinforced, presenting an "N"-shaped mechanical distribution structure. The arc plate near the weld can be stably reinforced, improving the extrusion stability of the two, ensuring the stability of the weld during welding, and reducing the occurrence of leaking welds and false welds. 3. In the process of driving the connecting shaft and / or the pressure roller to rotate, apply grease to the weld to provide the necessary heat dissipation and impurity removal for the weld, prevent oxidation and corrosion of the weld to a certain extent, and improve the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1It is a schematic diagram of the coordination of the arc plate, the first limiting mechanism, and the second limiting mechanism in the embodiment of the present application.

[0038] Figure 2 It is a schematic diagram of the coordination of the positioning seat, the first limiting mechanism, and the second limiting mechanism in the embodiment of the present application.

[0039] Figure 3 yes Figure 2 main view.

[0040] Figure 4 yes Figure 3 Top view of .

[0041] Figure 5 It is a structural diagram of the longitudinal limit member in an embodiment of the present application.

[0042] Explanation of the accompanying drawings: 11. Limiting assembly; 111. Baffle; 112. Sliding seat; 113. Pressure member; 1131. Pressure block; 1132. Rotating shaft; 1133. Connecting torsion spring; 21. Horizontal limiting member; 211. Guide wheel; 212. Mounting seat; 213. Connecting shaft; 214. Pressure roller; 215. Sanding roller; 22. Longitudinal limiting member; 221. Connecting rod; 222. Longitudinal pressure head; 2221. Fixing stud; 2222. Spring; 2223. Ball; 2224. Limiting frame; 3. Arc plate; 31. Welding seam; 32. Light positioning point; 4. Positioning seat; 41. Guide rail; 42. Mounting plate; 43. Supporting member. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-5 This application is described in further detail.

[0044] The embodiment of the present application discloses a method for welding an arc plate.

[0045] Reference Figure 1 and Figure 2 , a curved plate welding method, comprising the following processing steps: Pretreatment of curved plate 3.

[0046] The joint surfaces of the curved plates 3 are pre-cut to form serrations, ensuring the cleanliness of the weld seam 31 of the curved plates 3. This results in a serrated weld seam 31 between the two curved plates 3. The serrated weld seam 31 may have triangular, rectangular, or trapezoidal teeth. This pre-treatment increases the joint area of the weld seam 31, allowing for more complete filling and bonding of the molten metal during welding. It also provides a better flow path for the molten metal, facilitating the discharge of gases and impurities, thereby optimizing the internal quality of the weld seam 31 and helping to reduce potential defects such as cracks and pores during welding.

[0047] Obtain two curved plates 3 and place them on the top surface of the positioning seat 4.

[0048] Specifically, the upper surface of the positioning seat 4 is provided with a profile similar to that of the curved plate 3. A mounting groove is provided in the middle of the positioning seat 4 and along its length. At least one mounting plate 42 is transversely arranged in the mounting groove. A gap is left between the mounting plate 42 and the bottom of the mounting groove for personnel operation. By installing a bearing member 43 from the bottom up, the length of the limiter extending from the top surface of the mounting plate 42 can be adjusted. In the process of assembling the curved plate 3 on the positioning seat 4, the two curved plates 3 are placed on the mounting plate 42 at the same time after the gap between them is minimized as much as possible, so that the bearing member 43 and the back of the curved plate 3 are abutted. The number of bearing members 43 depends on the situation, but it is required that the bearing members 43 are provided on the lower back of the two curved plates 3 and are symmetrical along the length midline of the mounting plate 42 to provide support for the curved plate 3. There is a gap between the curved plate 3 and the mounting plate 42.

[0049] The visual recognition component monitors the weld 31 condition, obtains the weld 31 size and weld 31 position, determines the error value, and feeds back the parameters to the central system.

[0050] The positions of both ends of the two arc-shaped plates 3 are calibrated and fixed by the first limiting mechanism.

[0051] Specifically, refer to Figure 1 and Figure 3 The first limiting mechanism includes two limiting assemblies 11, mounted at either end of the lengthwise direction of the positioning seat 4. The limiting assemblies 11 include a baffle 111, a slide 112, and a pressing member 113. The baffle 111 is slidably connected to the slide 112, and the pressing member 113 is movably mounted on the sidewall of the baffle 111 to press the end of the curved plate 3. By adjusting the position of the baffle 111 on the slide 112, the operator can fine-tune the position of the curved plate 3 according to its specific size and shape, thereby adjusting the distance between the two baffles 111 to match the length of the curved plate 3 mounted on the positioning seat 4.

[0052] In order to reinforce the arc plate 3, the pressing member 113 includes a pressing block 1131, a rotating shaft 1132 and a connecting torsion spring 1133, wherein the pressing block 1131 is installed on the side wall of the baffle 111 through the rotating shaft 1132, one end of the connecting torsion spring 1133 is assembled with the pressing block 1131, and the other end is assembled with the rotating shaft 1132, and the end of the pressing block 1131 away from the baffle 111 is pressed against the end of the arc plate 3. In this process, the connecting torsion spring 1133 provides a continuous and uniform pressing force for the pressing block 1131, so that the end of the arc plate 3 can be pressed, which plays a role in reducing the warping or movement of the end of the arc plate 3 during the welding process, effectively reducing the movement or dislocation of the arc plate 3 during the welding process, helping to improve the docking accuracy of the two plates, and ensuring the continuity and uniformity of the weld 31.

[0053] In another preferred technical solution, a sliding groove is provided in the height direction of the baffle 111, and an assembly block is slidably connected in the sliding groove. The rotating shaft 1132 is rotatably connected to the assembly block to realize the assembly of the entire pressing member 113 and the baffle 111. By sliding the pressing member 113, the height position of the pressing member 113 on the baffle 111 is calibrated, thereby adapting to arc-shaped plates 3 of different heights and sizes, thereby improving the flexibility of the pressing member 113. In order to achieve the locking of the pressing member 113, a bolt limiter can be used to limit the sliding stroke of the pressing member 113, thereby ensuring the stability of the pressing member 113 when pressing the arc-shaped plate 3.

[0054] Reference Figure 3 and Figure 4 , a light positioning point 32 is made along the length direction of the weld 31 using an infrared device.

[0055] The second limiting mechanism includes a transverse limiting member 21 and a longitudinal limiting member 22, so that the transverse limiting member 21 clamps the front and back sides of the two arc-shaped plates 3, and at the same time the longitudinal limiting member 22 is aligned with the light positioning point 32, and the longitudinal limiting member 22 applies longitudinal pressure to the two arc-shaped plates 3.

[0056] Specifically, in the processing step in which the transverse limit member 21 clamps the front and back surfaces of the two arc-shaped plates 3, the positioning seat 4 includes guide rails 41 arranged on the top surfaces on both sides thereof, and the extension direction of the guide rails 41 is consistent with the length direction of the positioning seat 4. The transverse limit member 21 includes a guide wheel 211, a mounting seat 212, a connecting shaft 213 and a pressure roller 214. The guide wheel 211 corresponds to the inner top surface of the sliding guide rail 41. The guide wheel 211 has a central axis, and the central axis is also slidably connected to the side wall of the guide rail 41 close to it. One end of the central axis is connected to the mounting seat 212 through a bearing, and the connecting shaft 213 is simultaneously connected to the two mounting seats 212 by a bearing. The connecting shaft 213 is consistent with the axis of the central axis, and the pressure roller 214 is installed on the mounting seat 212. The pressure roller 214 is arranged parallel to the connecting shaft 213, and an installation gap is left between the two.

[0057] When in use, the driving guide wheel 211 can drive the mounting seat 212, the connecting shaft 213 and the pressure roller 214 to move smoothly along the length direction of the guide rail 41. During the rotation of the guide wheel 211, the connecting shaft 213 can rotate synchronously. With the cooperation of the connecting shaft 213 and the pressure roller 214, the arc plate 3 can be clamped horizontally, further enhancing the stability between the two plates and reducing the weld 31.

[0058] In another preferred technical solution, referring to Figure 2 A frosting roller 215 is provided on the mounting seat 212 . The frosting roller 215 , the pressure roller 214 , and the connecting shaft 213 are arranged in parallel, and an installation gap is also reserved between the frosting roller 215 and the connecting shaft 213 .

[0059] The gap between the grinding roller 215 and the connecting shaft 213 is reserved for the arc plate 3 to pass through. The operator can switch the position of the grinding roller 215 or the pressure roller 214 to meet different grinding or welding requirements. The entire structure is more compact, the operating principle is relatively simple, and it is easy to implement.

[0060] When the longitudinal limit member 22 applies longitudinal pressure to the two curved plates 3, the weld 31 is monitored by the visual recognition member. After obtaining the information, the central system calculates the position of the light positioning point 32 and determines that the light positioning points 32 are set on both sides of the weld 31, and the left and right light positioning points 32 are spaced and not facing each other. The infrared device transmits light at the light positioning point 32, providing a reliable position reference for the subsequent assembly between the longitudinal limit member 22 of the second limit mechanism and the curved plate 3.

[0061] In this application, reference is made to Figure 2 and Figure 5 The longitudinal limit member 22 includes a connecting rod 221 and a longitudinal pressure head 222. One end of the connecting rod 221 is assembled on the top surface of the mounting seat 212, and an angle is left between the extension line of the connecting rod 221 and the extension line of the connecting shaft 213. The longitudinal pressure head 222 is assembled on the end of the connecting rod 221 away from the mounting seat 212, and the bottom end of the longitudinal pressure head 222 is pressed against the top surface of the arc plate 3.

[0062] Specifically, the visual recognition component automatically obtains the length of the connecting shaft 213 and the length of the connecting rod 221, and calculates the angle A, cosA=a / c=x, A=arccos(x), where a refers to the length of the connecting shaft 213, c refers to the length of the connecting rod 221, and 30°≤A≤90°.

[0063] More specifically, the longitudinal pressure head 222 includes a fixed stud 2221 threadedly connected to the end of the connecting rod 221, the fixed stud 2221 is arranged vertically to the connecting rod 221, and the bottom end of the fixed stud 2221 is movably assembled with a ball 2223. The movable assembly referred to here can be to assemble the ball 2223 at the bottom of the fixed stud 2221 through a single spring 2222. The optimization solution is to add limit frames 2224 on both sides of the bottom of the fixed stud 2221 on this basis, and the side walls of the limit frame 2224 close to the ball 2223 are also provided with springs 2222.

[0064] When the bottom end of the longitudinal pressure head 222 is pressed against the top surface of the arc plate 3, that is, the ball 2223 is pressed against the top surface of the arc plate 3, at this time, the two realize a point-in-time connection, and the spring 2222 above allows the ball 2223 to have the ability to swing slightly left and right. At this time, a connecting part is added to the outer wall of the ball 2223, and the limit frame 2224 allows the limit part of the ball 2223 to slide in the corresponding direction. The spring 2222 assembled at the limit frame 2224 provides a buffering capacity for the ball 2223, thereby realizing a soft connection between the ball 2223 and the arc plate 3.

[0065] In the present application, light positioning points 32 are set on both sides of the weld 31, and an interval and non-opposite arrangement is adopted, so that the longitudinal limiter 22 and the transverse limiter 21 are staggered and reinforced, presenting an "N"-shaped mechanical distribution structure. The arc plate 3 in the area near the weld 31 can be stably reinforced, thereby improving the extrusion stability of the two, ensuring the stability of the weld 31 during welding, and reducing the occurrence of leaking welds and cold welds. The value of the angle A is determined according to the length a of the connecting shaft 213 and the length c of the connecting rod 221 to achieve precise control of the pressure angle. By rotating the fixing stud 2221 and adjusting the length of the fixing stud 2221, different pressures are applied to the arc plate 3. In this process, by creatively adding the ball 2223, the spring 2222, and the limit frame 2224 for limiting the stroke of the ball 2223, it is ensured that the longitudinal pressure head 222 and the arc plate 3 are softly connected, which not only ensures the effective transmission of the welding force, but also makes the longitudinal pressure provided by the longitudinal limit member 22 more evenly distributed on both sides of the weld 31, thereby improving the extrusion stability of the two plates, and avoiding the longitudinal pressure head 222 from damaging the surface of the arc plate 3. At the same time, it allows it to have a slight position error and implements automatic calibration.

[0066] The welding is performed by aligning the weld seam 31 with welding equipment, and the weld seam 31 is polished to obtain a welded part.

[0067] The specific implementation steps include: Use acetone or alkaline degreasing agent to remove oil and moisture on the surface of the weld 31.

[0068] The acetone or alkaline degreasing agent remaining on the surface of the weld 31 is washed away with water.

[0069] The air blowing and chip removal are performed by the air blowing member installed on the mounting seat 212 .

[0070] The arc-shaped plate 3 passes through the installation gap between the connecting shaft 213 and the pressure roller 214 to drive the connecting shaft 213 and / or the pressure roller 214 to rotate, and a grease object is applied to the weld 31 during the process.

[0071] Acetone or alkaline degreasing agent is used to remove oil and moisture on the surface of the weld 31 to ensure the purity of the weld 31 in subsequent processing. Then, the residual degreasing agent is rinsed with water to further improve the cleaning effect. This double cleaning mechanism provides more ideal surface conditions for subsequent weld 31 processing; the air blowing part on the mounting seat 212 is used to blow away chips and exhaust chips to reduce the debris and dust generated during the grinding process, thereby reducing the adverse effects of debris on the quality of the weld 31.

[0072] In the process of driving the connecting shaft 213 and / or the pressure roller 214 to rotate, grease is applied to the weld 31 to provide necessary heat dissipation and impurity removal for the weld 31, thereby preventing oxidation and corrosion of the weld 31 to a certain extent and improving the quality of the finished product.

[0073] The above are all preferred embodiments of the present application. These embodiments are only explanations of the present application and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be covered within the scope of protection of the present application.

Claims

1. A method for welding an arc plate, characterized in that: The processing steps include: Obtain two curved plates (3) and place them on the top surface of the positioning seat (4); Monitor the weld (31) through a visual recognition component, obtain the weld (31) size and weld (31) position, determine the error value, and feed back the parameters to a central system; The positions of both ends of the two arc-shaped plates (3) are calibrated and fixed by a first limiting mechanism; Using an infrared device to make a light positioning point (32) along the length direction of the weld (31); The second limiting mechanism comprises a transverse limiting member (21) and a longitudinal limiting member (22), wherein the transverse limiting member (21) clamps the front and back surfaces of the two arc-shaped plates (3), and the longitudinal limiting member (22) is aligned with the light positioning point (32), and the longitudinal limiting member (22) applies longitudinal pressure to the two arc-shaped plates (3); The welding is performed by aligning the weld seam (31) with welding equipment, and the weld seam (31) is polished to obtain a welded part.

2. The arc plate welding method according to claim 1, characterized in that: In the processing steps of calibrating and fixing the positions of the two ends of the two arc-shaped plates (3) by means of a first limiting mechanism, the first limiting mechanism includes two limiting assemblies (11), which are respectively installed at the two ends of the positioning seat (4), and the limiting assembly (11) includes a baffle (111), a slide seat (112) and a pressing member (113), wherein the baffle (111) is slidably connected to the slide seat (112), and the pressing member (113) is movably arranged on the side wall of the baffle (111) for pressing the end of the arc-shaped plate (3).

3. The arc plate welding method according to claim 2, characterized in that: In the processing step of pressing the end of the arc plate (3) by the pressing member (113), the pressing member (113) includes a pressing block (1131), a rotating shaft (1132) and a connecting torsion spring (1133), wherein the pressing block (1131) is installed on the side wall of the baffle (111) through the rotating shaft (1132), one end of the connecting torsion spring (1133) is assembled with the pressing block (1131) and the other end is assembled with the rotating shaft (1132), and the end of the pressing block (1131) away from the baffle (111) presses against the end of the arc plate (3).

4. The arc plate welding method according to claim 1, characterized in that: In the processing step of making a light locating point (32) along the length direction of the weld (31) by using an infrared device, the weld (31) is monitored by a visual recognition component, and the central system calculates the position of the light locating point (32) after obtaining information, and determines that the light locating points (32) set on both sides of the weld (31) are spaced and not arranged directly opposite each other, and transmits light at the light locating point (32) by using the infrared device.

5. The arc plate welding method according to claim 4, characterized in that: In the processing step of clamping the front and back surfaces of the two arc-shaped plates (3) by the transverse limiting member (21), the positioning seat (4) includes guide rails (41) arranged on the top surfaces of both sides thereof, the extension direction of the guide rails (41) is consistent with the length direction of the positioning seat (4), the transverse limiting member (21) includes a guide wheel (211), a mounting seat (212), a connecting shaft (213) and a pressure roller (214), the guide wheel (211) is correspondingly slidably connected to the inner top surface of the guide rail (41), and the guide wheel (211) has The central shaft is slidably connected to the side wall of the guide rail (41) adjacent to it, one end of the central shaft is connected to the mounting seat (212) through a bearing, the connecting shaft (213) is simultaneously connected to the two mounting seats (212) by a bearing, the connecting shaft (213) is consistent with the axis of the central shaft, the pressure roller (214) is installed on the mounting seat (212), the pressure roller (214) and the connecting shaft (213) are arranged in parallel, and an installation gap is left between the two.

6. The arc plate welding method according to claim 5, characterized in that: In the processing step of grinding the weld (31), a grinding roller (215) is provided on the mounting seat (212), the grinding roller (215), the pressure roller (214), and the connecting shaft (213) are arranged in parallel, and an installation gap is also reserved between the grinding roller (215) and the connecting shaft (213).

7. The arc plate welding method according to claim 5, characterized in that: When the longitudinal limiting member (22) applies longitudinal pressure to the two arc-shaped plates (3), the longitudinal limiting member (22) comprises a connecting rod (221) and a longitudinal pressure head (222); one end of the connecting rod (221) is mounted on the top surface of the mounting seat (212), and an angle is left between the extension line of the connecting rod (221) and the extension line of the connecting shaft (213); the longitudinal pressure head (222) is mounted on the end of the connecting rod (221) away from the mounting seat (212), and the bottom end of the longitudinal pressure head (222) presses against the top surface of the arc-shaped plate (3).

8. The arc plate welding method according to claim 7, characterized in that: When the bottom end of the longitudinal pressure head (222) is pressed against the top surface of the arc plate (3), the angle A is calculated, cosA=a / c=x, A=arccos(x), wherein a refers to the length of the connecting shaft (213), c refers to the length of the connecting rod (221), and 30°≤A≤90°.

9. The arc plate welding method according to claim 5, characterized in that: Before welding the weld seam (31), the surface to be welded is pre-processed so that a zigzag weld seam (31) is formed between the two arc-shaped plates (3).

10. The arc plate welding method according to claim 8, characterized in that: The step of grinding the weld (31) specifically includes the following steps: Using acetone or alkaline degreasing agent to remove oil and moisture from the surface of the weld (31); Rinse the weld (31) surface with water to remove any acetone or alkaline degreasing agent remaining thereon; Blowing away chips and exhausting chips by blowing air through an air blowing member installed on the mounting seat (212); The arc-shaped plate (3) is passed through the installation gap between the connecting shaft (213) and the pressure roller (214), driving the connecting shaft (213) and / or the pressure roller (214) to rotate, and a grease object is applied to the welding seam (31) during the process.

Images