Metal plate welding process and equipment used in metal plate welding process

Abstract

The invention provides a metal plate welding process and equipment used by the metal plate welding process, and belongs to the technical field of welding. A to-be-welded metal plate is placed below the water surface in the water bath pool, meanwhile, the air blowing assembly is arranged outside the welding gun head of the welding robot, air and argon are blown out of the outer side and the inner side of the air blowing assembly respectively, an isolation air gap can be formed in water through the air, and therefore the metal plate can be welded. The welding gun head can move to the welding seam of the metal plate from the isolation air gap and conduct welding operation, argon is blown out in the welding process to achieve gas protection, the welding requirement is met, meanwhile, direct heat exchange can be conducted through water and a large amount of heat generated by welding, the cooling effect is better, and the welding efficiency is improved. The problems of welding deformation and burnthrough caused by too high heat are avoided, additional transfer is not needed in the whole welding process, shaping equipment does not need to be arranged for aftertreatment, the process steps are simple, the machining efficiency is higher, operation is convenient, the cost is reduced, and the product quality is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and specifically relates to a welding process for metal plates and the equipment used. Background Art

[0002] When welding small and thin metal plates, due to factors such as high temperature, it is extremely easy to cause deformation of the metal plates and burn through the metal plates, affecting the product quality.

[0003] Currently, the existing methods for welding thin metal plates on the market usually clamp the metal plates on the welding station, and then use a welding gun head to weld the metal plates. At this time, in order to avoid deformation and burn-through problems of the metal plates, the temperature of the metal plates is usually adjusted during the welding process. For example, a welding device and welding method for aluminum alloy thin plates disclosed in patent application CN118951242A clamp the thin plates to be welded through a support seat and a welding seat, and place the joints of the two thin plates in the middle of the welding seat. At the same time, a cooling part and a heating part are provided in both the support seat and the welding seat, and the cooling part and the heat dissipation part are used to cool or heat the thin plates. In addition, during spot welding, the cooling medium is introduced into the cooling part to cool the thin plates, and then the thin plates are fully welded. During the full welding process, the thin plates are prevented from overheating. In addition, after welding is completed, the thin plates need to be heated through the heating part, and then the possibly deformed thin plates are shaped by means of reciprocating rolling to maintain the appearance and performance of the welded thin plates and achieve the welding of the thin plates. Although the above method can already meet the requirements of thin plate welding, however, it needs to be welded first and then shaped, which has the problem of cumbersome process. In addition, during welding, only the cooling part in the support seat and the welding seat is used to cool the thin plates, and only indirect cooling of the thin plates can be achieved, and the cooling effect is limited. There are still problems of deformation and burn-through of the thin plates, which is not conducive to the improvement of product quality. Summary of the Invention

[0004] Aiming at the above problems existing in the prior art, the present invention aims to provide a welding process for metal plates and the equipment used. First, spot welding of the metal plates is carried out to obtain a primary product, and then the primary product is clamped into a water bath, and drained full welding is carried out to obtain a finished product, ensuring that other areas of the metal plates except the welding areas are immersed in water during the welding process, realizing rapid heat exchange with the metal plates, thereby avoiding deformation and burn-through problems caused by high temperature, ensuring product quality, and moreover, no additional shaping operation is required, the process is simpler, the efficiency is higher, and it is conducive to the improvement of product quality.

[0005] The specific technical solution is as follows:

[0006] A welding process for metal plates, characterized by including the following steps:

[0007] Step S1, prepare for welding;

[0008] Perform interface treatment on the metal plates to be welded, then detect the equipment status and set welding parameters;

[0009] Step S2, spot welding;

[0010] Perform spot welding operations on the metal plates to be welded so that the welded metal plates form an integral structure to obtain a primary product;

[0011] Step S3, full welding;

[0012] Place the primary product into the water bath and accurately clamp it. Then start the outer insulation protection of the water bath, and then start the welding equipment to blow out air first to form an isolation air gap in the water. Control the welding gun head to move to the weld, and then blow out argon to form a protective gas mass at the welding point. Move the welding gun head to complete the welding of the entire weld to obtain a finished product;

[0013] Step S4, cleaning;

[0014] Start the water pump connected to the water bath to impact the weld to achieve weld cleaning;

[0015] Step S5, drying;

[0016] Take out the cleaned metal plate from the water bath and start the fan to form a wind field to achieve rapid drying of the metal plate.

[0017] In the above-mentioned welding process of metal plates, in step S3, when clamping the primary product into the water bath, the metal plate is immersed below the water surface, and the immersion depth range is 5 - 10 mm.

[0018] In the above-mentioned welding process of metal plates, in step S5, the hanging power-on method is used for drying. At this time, the tools used in the hanging power-on method include two chucks. The two chucks are respectively electrically connected to the positive and negative poles of a weak current. The chucks are suspended in the wind field environment, and the two chucks respectively clamp both ends of the metal plate.

[0019] A device used in a welding process of metal plates, for processing the above-mentioned welding process of metal plates, having the following characteristics, including:

[0020] A frame, the frame has a load-bearing platform;

[0021] A welding robot, the welding robot is set at one end of the load-bearing platform, and a welding gun head is set on the robotic arm of the welding robot;

[0022] A water bath is provided at the other end of the load platform. The water bath is filled with water at a predetermined level. A clamping station is provided in the water bath and is immersed below the water surface. A water outlet and a drain are respectively provided on the side wall and the bottom wall of the water bath. A water pump is provided on the load platform and is connected to the water outlet and the drain by pipes.

[0023] The outer insulating protection component includes a fixed sleeve, a lifting sleeve and a lifting drive. The fixed sleeve and the lifting sleeve are both made of insulating materials. The fixed sleeve is arranged on the outside of the water bath and the welding robot. The lifting sleeve is provided outside the fixed sleeve. The lifting sleeve performs lifting movement relative to the fixed sleeve in the vertical direction. The lifting drive is mounted on the frame in the vertical direction, and the driving shaft of the lifting drive is hinged to the outer wall of the lifting sleeve.

[0024] Fan, the fan is arranged on the side of the frame;

[0025] The blowing assembly includes a fixed plate, an outer cylinder and an inner cylinder. The outer cylinder is coaxially sleeved outside the inner cylinder, and the welding gun head is installed in the inner cylinder. One end of the outer cylinder and the inner cylinder are connected to the fixed plate, and the fixed plate is installed on the robotic arm. The space between the outer cylinder and the inner cylinder is connected to the air supply equipment, and the space between the inner cylinder and the welding gun head is connected to the argon supply equipment.

[0026] In the equipment used in the above-mentioned metal plate welding process, an insulating pad is provided between the bottom of the water bath and the load-bearing platform.

[0027] In the equipment used in the above-mentioned metal plate welding process, both the fixed sleeve and the lifting sleeve are provided with isolation plates, and the isolation plates of the fixed sleeve and the lifting sleeve are both arranged between the water bath and the welding robot.

[0028] The equipment used in the above-mentioned metal plate welding process further includes an outer cover, which is mounted on the outside of the mechanical arm equipped with the welding gun head, and one end of the outer cover is mounted on the outside of the fixed plate and connected to the fixed plate.

[0029] The equipment used in the above-mentioned metal plate welding process also includes a flexible cover, which is an accordion cover structure. One end of the flexible cover is connected to the end of the outer cover away from the fixed plate, and the other end of the flexible cover extends toward the other robotic arms of the welding robot.

[0030] In the equipment used in the above-mentioned metal plate welding process, one end of the inner tube away from the fixed plate extends outside the outer tube, and the end of the inner tube extending outside the outer tube is bent outward to form an outward turning edge.

[0031] The positive effects of the above technical solution are:

[0032] The welding process of the above-mentioned metal plate and the equipment used place the metal plate to be welded on the clamping station under the water surface of the water bath pool, and blow air and argon through the blowing component to the welding gun head. First, blow air to form an isolation air gap in the water, so that the welding gun head can move through the isolation air gap to the weld of the metal plate to be welded, and then blow argon to form a protective gas mass at the welding position to meet the requirements of argon arc welding. Moreover, a large amount of heat generated during the welding process can be directly heat-exchanged with water, avoiding the problems of deformation and burning through of the metal plate caused by excessive heat. There is no need to transfer and set up shaping equipment for post-treatment. The process is simple, the operation is convenient, the processing efficiency is improved, and the product quality is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a flowchart of a welding process for a metal plate according to the present invention;

[0034] Figure 2 It is a schematic diagram of the equipment used for a welding process of a metal plate according to the present invention;

[0035] Figure 3 It is a schematic diagram of the equipment used for a welding process of a metal plate according to the present invention after hiding the outer insulation protection component;

[0036] Figure 4 It is a structural diagram of the blowing component of the equipment used for a welding process of a metal plate according to the present invention;

[0037] Figure 5 is Figure 4 an enlarged view of part A in

[0038] In the drawings: 1. Frame; 11. Load platform; 2. Welding robot; 21. Welding gun head; 22. Manipulator; 3. Water bath pool; 31. Clamping station; 32. Water outlet; 4. Outer insulation protection component; 41. Fixed sleeve; 42. Lifting sleeve; 43. Lifting drive; 44. Partition board; 5. Blowing component; 51. Fixed plate; 52. Outer cylinder; 53. Inner cylinder; 54. Outer cover; 531. Flanged edge; 6. Insulating pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] In order to make the technical means, creative features, achieved purposes and effects realized by the present invention easy to understand, the following embodiments are combined with the attached Figure 1 to Figure 5 to specifically elaborate on the technical solutions provided by the present invention, but the following content is not a limitation of the present invention.

[0040] Figure 1 It is a flowchart of a welding process for a metal plate according to the present invention. As Figure 1As shown in the figure, the welding process of the metal plate provided in this embodiment is used for welding metal plates with small size and thin thickness, and includes the following steps: Step S1, preliminary welding; Step S2, spot welding; Step S3, full welding; Step S4, cleaning; and Step S5, drying.

[0041] Specifically, during the preliminary welding process of Step S1, the metal plates to be welded are first subjected to interface treatment, and the treatment methods include operations such as shaping and grinding, so that the connection interfaces of the two metal plates to be welded are flat and clean, which is beneficial to subsequent welding operations. After the pretreatment of the metal plates is completed, the equipment status is then detected, including detecting the water depth between the water level in the water bath 3 and the clamping station 31, the remaining amount of the welding rod, the air supply status of the gas storage equipment, etc., to ensure that the water level in the water bath 3 meets the cooling requirements while avoiding interference with welding. Moreover, it can also ensure the continuous supply of the welding rod during the entire welding process. In addition, it can also ensure the continuous supply of air and argon during the welding process to ensure the welding effect. Finally, the welding parameters are set, and the welding current, voltage, and welding speed are adjusted according to the thickness and material of the metal plate, and the air pressure and flow rate of air and argon are adjusted according to the water depth between the water surface and the clamping station 31 to ensure that a stable isolation air gap can be formed during welding and also meet the welding requirements of argon arc welding.

[0042] Specifically, during the spot welding process of Step S2, the metal plates to be welded need to be placed on the spot welder for spot welding operations. At this time, the spacing range between adjacent two welding points is 80 - 100 mm. Preferably, the spacing between adjacent two welding points is 80 mm, which ensures that the two metal plates are more stable after being connected by spot welding. After the spot welding is completed, the welded metal plates can form an integral structure to obtain a primary product, providing conditions for subsequent stable clamping on the clamping station 31 and maintaining stability during welding.

[0043] Specifically, during the full welding process in step S3, the primary product needs to be first placed into the water bath 3 and accurately clamped on the clamping station 31. Then, the outer insulation protection of the water bath 3 is started. Since during welding, the metal plate to be welded needs to be connected to the electrode, and there is a large current passing through the metal plate during the welding process, the water in the water bath 3 is also electrified. In addition, during welding, an isolation air gap is blown out in the water through the air, and there is a problem of water splashing. At this time, isolation can be achieved through the outer insulation protection, improving the welding safety. After the outer insulation protection operation is completed, the welding equipment is started to blow out air first to form an isolation air gap in the water, so that the welding gun head 21 can move from the formed isolation air gap to the weld to be welded, avoiding the influence of water on the welding, and ensuring the smooth progress of welding. Moreover, the movement of the welding gun head 21 to the weld is controlled to avoid the influence of water on the welding gun head 21 itself and the welding process, providing conditions for welding when the welding gun head 21 is subsequently moved. When formally welding, argon is blown out to form a protective gas mass at the welding position, that is, the welding position is protected by argon to prevent welding oxidation problems and ensure the welding performance. At this time, the welding gun head 21 is moved to complete the welding of the entire weld, achieving the full welding operation and obtaining the finished product.

[0044] In addition, when clamping the primary product into the water bath 3, the metal plate is immersed below the water surface, ensuring that the water can completely immerse the metal plate, so that the heat on the metal plate during welding can directly exchange heat with the water, achieving rapid heat dissipation, thereby avoiding the deformation and burning-through problems of the metal plate caused by excessive heat, and ensuring the welding quality. And the immersion depth range is 5 - 10 mm. Preferably, the immersion depth is selected as 6 mm, which can not only facilitate the formation of an isolation air gap when air is blown out, but also ensure the heat exchange effect, and the structural design is more reasonable.

[0045] Specifically, during the cleaning process in step S4, after the full welding is completed, at this time, the water in the water bath 3 no longer plays a role in the welding process of the metal plate. The water pump connected to the water bath 3 is started. There is a water outlet 32 on the side wall of the water bath 3 and a drain port at the bottom. The water pump pumps the water in the water bath 3 from the drain port and discharges it into the water bath 3 through the water outlet 32. The water flow through the water outlet 32 impacts the weld to wash the weld, thereby achieving weld cleaning. The surface cleaning can be completed without additionally transporting the metal plate and setting up special cleaning equipment, improving the welding effect and ensuring the product quality.

[0046] Specifically, when performing the drying process in step S5, first take out the cleaned metal plate from the water bath 3 and transfer the metal plate to a dry environment. At this time, the fan is started to form a wind field to achieve the rapid drying of the metal plate, providing conditions for the subsequent storage, transportation, etc. of the metal plate.

[0047] More specifically, when drying the finished product, the hanging and electrifying method is used for drying. At this time, the tools used in the hanging and electrifying method include two chucks. The two chucks are respectively electrically connected to the positive and negative poles of a weak current through wires. The chucks are suspended in the wind field environment, so that when the metal plate is clamped by the chucks later, the metal plate can be in the wind field environment, and the moisture on the surface of the metal plate can be quickly dried by the airflow, realizing the rapid drying of the metal plate. Moreover, the two chucks respectively clamp the two ends of the metal plate, so that when the chucks are electrified, the current can flow from one end of the metal plate to the other end. At this time, due to the resistance of the metal plate, it will generate heat by itself, and the evaporation of the water on its surface is accelerated through its own heat generation, improving the drying efficiency.

[0048] In addition, this embodiment also provides the equipment used in the welding process of the above metal plate. Figure 2 It is a schematic diagram of the equipment used in a welding process of a metal plate according to the present invention; Figure 3 It is a schematic diagram of the equipment used in a welding process of a metal plate according to the present invention after hiding the outer insulation protection component. As Figure 2 and Figure 3 shown, the equipment used in the welding process of the metal plate provided in this embodiment includes: a frame 1, a welding robot 2, a water bath 3, an outer insulation protection component 4, a fan, and a blowing component 5.

[0049] Specifically, the frame 1 is horizontally placed on the ground. At this time, the frame 1 has a horizontally arranged load platform 11, which provides an installation carrier for installing structures such as the welding robot 2 and the water bath 3 later.

[0050] Specifically, the welding robot 2 is arranged at one end of the load platform 11. Preferably, the welding robot 2 is a multi-axis robot, which can move in multiple trajectories and directions to meet different welding requirements. At this time, a welding gun head 21 is arranged on the robotic arm 22 of the welding robot 2, and solder is sent out through the welding gun head 21 to achieve welding. It should be noted that the welding robot 2 is a common automated device in welding processing, and moreover, the welding gun head 21 adopts a welding gun head 21 for argon arc welding to meet the requirements of argon arc welding. Since the welding robot 2 belongs to the prior art, its specific structure will not be described in detail here.

[0051] Specifically, the water bath 3 is arranged at the other end of the load platform 11, so that the water bath 3 is located beside the welding robot 2, facilitating the welding gun head 21 of the subsequent welding robot 2 to weld the metal plate in the water bath 3. The water bath 3 is filled with water at a predetermined water level, and rapid heat exchange during welding is achieved through the water to avoid deformation and burn-through of the metal plate. At this time, a clamping station 31 is arranged in the water bath 3 and immersed below the water surface. The spot-welded metal plate is placed through the clamping station 31 to fix the primary product, ensuring the stability of the primary product during subsequent full welding, guaranteeing the welding quality. At the same time, it can also ensure that the primary product clamped on the clamping station 31 is immersed below the water surface, ensuring rapid heat dissipation of the metal plate during welding and guaranteeing the product quality. Water outlets 32 and a drain port are respectively provided on the side wall and the bottom wall of the water bath 3, and a water pump is arranged on the load platform 11 and is respectively connected to the water outlet 32 and the drain port through pipelines. After welding is completed, the water in the water bath 3 can be pumped out from the drain port by starting the water pump and discharged back into the water bath 3 through the water outlet 32 in the reverse direction to realize the recycling of water. Moreover, when the water is discharged from the water outlet 32, it can impact the weld on the metal plate in the water bath 3 to clean the weld and meet the cleaning requirements. It is worth noting that one electrode of the electric welding machine extends into the water bath 3 through a wire and is electrically connected to the clamping station 31, so that when the metal plate to be welded is clamped on the clamping station 31, it can be connected to this electrode to meet the welding requirements.

[0052] Specifically, an outer insulation protection component 4 is arranged outside the water bath 3 and the welding robot 2. Moreover, the outer insulation protection component 4 further includes a fixed sleeve 41, a lifting sleeve 42, and a lifting drive 43. Both the fixed sleeve 41 and the lifting sleeve 42 are made of insulating materials and can achieve electrical isolation. At this time, the fixed sleeve 41 is sleeved outside the water bath 3 and the welding robot 2 to realize the outer protection of the water bath 3 and the welding robot 2 and ensure welding safety. In addition, a lifting sleeve 42 is sleeved outside the fixed sleeve 41, and the lifting sleeve 42 moves up and down relative to the fixed sleeve 41 in the vertical direction. That is, the height of the fixed sleeve 41 can be extended in the height direction through the lifting sleeve 42, so that during loading and unloading, the lifting sleeve 42 can be lowered to facilitate the loading and unloading operation, and during welding, the height coverage range can be increased by raising the lifting sleeve 42 to improve the protection effect. In addition, the lifting drive 43 is installed on the frame 1 in the vertical direction, and the drive shaft of the lifting drive 43 is hinged to the outer side wall of the lifting sleeve 42. That is, the movement of the lifting drive 43 can provide power for the lifting movement of the lifting sleeve 42.

[0053] Specifically, a blower is also arranged beside the frame 1, so that after the finished product is taken out of the water bath 3, it can be transferred to the blower to be dried to ensure the dryness of the product.

[0054] Figure 4The structural diagram of the air blowing component of the equipment used in the welding process of a metal plate according to the present invention is as follows. As Figures 2 to 4 shown, the air blowing component 5 is installed on the welding robot 2. The air blowing component 5 further includes a fixing plate 51, an outer cylinder 52 and an inner cylinder 53. The outer cylinder 52 is coaxially sleeved outside the inner cylinder 53. At this time, there is a gap between the outer cylinder 52 and the inner cylinder 53. The welding gun head 21 is installed inside the inner cylinder 53, and there is a gap between the welding gun head 21 and the inner cylinder 53. One ends of the outer cylinder 52 and the inner cylinder 53 are both connected to the fixing plate 51, and the fixing plate 51 is installed on the robotic arm 22, so that the air blowing component 5 can move along with the robotic arm 22, that is, the synchronous movement of the air blowing component 5 and the welding gun head 21 is realized. In addition, the space between the outer cylinder 52 and the inner cylinder 53 is connected to the air supply device, and the space between the inner cylinder 53 and the welding gun head 21 is connected to the argon supply device. During welding, high-pressure air can be blown out through the gap between the outer cylinder 52 and the inner cylinder 53 to form an air flow on the outermost side, so as to blow away the water in the water bath 3 to form an isolation air gap, avoiding the influence of water on welding and ensuring the normal progress of welding. In addition, argon can be blown out through the gap between the inner cylinder 53 and the welding gun head 21 to form a protective gas at the welding gun head 21, meeting the requirements of argon arc welding. When the isolation air gap is formed by air and argon is only used as a protective gas, it can not only meet the requirements of argon arc welding, but also avoid excessive use of argon, reduce the welding cost and avoid waste of resources.

[0055] More specifically, an insulating pad 6 is provided between the bottom of the water bath 3 and the load platform 11. Since the clamping station 31 in the water bath 3 is electrically connected to one electrode of the electric welding machine, the water in the water bath 3 is also conductive. To prevent accidents, setting the insulating pad 6 at the bottom of the water bath 3 can improve the safety of the equipment. It should be noted that a drain hole is provided on the load platform 11 and beside the water bath 3, and the drain hole is connected to the collection box through a pipeline, so that the water splashed outside the water bath 3 can flow into the collection box through the drain hole, preventing accidental electric leakage problems and further improving the safety.

[0056] More specifically, both the fixed sleeve 41 and the lifting sleeve 42 are provided with isolation plates 44. During installation, the isolation plates 44 of the fixed sleeve 41 and the lifting sleeve 42 are both arranged between the water bath 3 and the welding robot 2, that is, the isolation between the water bath 3 and the welding robot 2 can be realized through the isolation plates 44, preventing water from accidentally splashing onto the welding robot 2 during welding, improving the protection effect and better safety. It should be noted that since both the fixed sleeve 41 and the lifting sleeve 42 are provided with isolation plates 44, when the lifting sleeve 42 moves up and down relative to the fixed sleeve 41, no matter what height the lifting sleeve 42 is at, there is an isolation plate 44 for corresponding height adjustment, with better adaptability.

[0057] More specifically, the robotic arm 22 of the welding gun head 21 is also provided with an outer cover 54, one end of the outer cover 54 is arranged outside the fixed plate 51 and connected to the fixed plate 51, so that the outer cover 54 and the fixed plate 51 can form a barrel-shaped structure. The outer cover 54 can be used to protect the outside of the robotic arm 22 on which the welding gun head 21 is installed, so that when the welding gun head 21 is extended into the water bath 3 for welding, the robotic arm 22 on which the welding gun head 21 is installed will also have a section close to the water surface or in contact with the water. At this time, the outer cover 54 can be used to isolate the robotic arm 22 from water, further reducing the risk of leakage, while also improving the protection of the welding robot 2 itself and extending its service life.

[0058] More specifically, the robotic arm 22 of the welding robot 2 is also covered with a flexible cover. In this case, the flexible cover has an accordion-shaped structure, which allows for multi-directional deformation. Furthermore, one end of the flexible cover is connected to the end of the outer cover 54 facing away from the fixed plate 51, and the other end of the flexible cover extends toward the other robotic arm 22 of the welding robot 2. This not only provides comprehensive isolation and protection for the welding robot 2, but also meets the movement requirements of the welding robot 2's arms, providing greater adaptability.

[0059] Figure 5 for Figure 4 An enlarged view of part A in the figure. Figure 4 and Figure 5 As shown, the end of the inner tube 53 facing away from the fixed plate 51 extends outside the outer tube 52, allowing air to be blown out first, forming an isolating air gap in the water first. In addition, the end of the inner tube 53 extending outside the outer tube 52 is bent outward to form an outward-turned edge 531. The outward-turned edge 531 allows the inner space of the end of the inner tube 53 extending outside the outer tube 52 to be expanded into a trumpet hole. On the one hand, argon gas can be collected through the trumpet hole, so that the argon gas can be accumulated on the solder of the welding gun head 21, improving the protection effect. On the other hand, the outer wall of the outward-turned edge 531 can guide the air so that it can be blown out obliquely downward, pushing away the water and quickly forming an isolating air gap without interfering with the argon gas inside, maintaining the argon arc welding effect.

[0060] The welding process and equipment for metal plates provided in this embodiment include step S1, preliminary welding; step S2, spot welding; step S3, full welding; step S4, cleaning; and step S5, drying. By placing the metal plates to be welded below the water surface in the water bath 3, at the same time, a blowing component 5 is arranged outside the welding gun head 21 of the welding robot 2. Air and argon are blown out from the outside and inside of the blowing component 5 respectively. The air can form an isolation air gap in the water, enabling the welding gun head 21 to move through the isolation air gap to the weld of the metal plate and perform welding operations, and blowing argon during the welding process to achieve gas protection. While meeting the welding requirements, it can also directly exchange heat with a large amount of heat generated by welding through water, with a better cooling effect, avoiding problems such as welding deformation and burn-through caused by excessive heat. Moreover, during the entire welding process, there is no need for additional transfer, and there is no need to set up shaping equipment for post-treatment. The process steps are simple, the processing efficiency is higher, the operation is convenient, the cost is reduced, and the product quality is ensured.

[0061] The above are only preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding process for a metal plate, characterized in that, It includes the following steps: Step S1, preliminary welding; Perform interface treatment on the metal plates to be welded, then detect the equipment status and set welding parameters; Step S2, spot welding; Perform spot welding operations on the metal plates to be welded so that the welded metal plates form an integral structure to obtain a primary product; Step S3, full welding; Place the primary product into the water bath pool and accurately clamp it. Then start the outer insulation protection of the water bath pool. Next, start the welding equipment to blow out air first to form an isolation air gap in the water, and control the welding gun head to move to the weld. Then blow out argon to form a protective gas mass at the welding area. Move the welding gun head to complete the welding of the entire weld to obtain a finished product; Step S4, cleaning; Start the water pump connected to the water bath pool to impact the weld to achieve weld cleaning; Step S5, drying; Take out the cleaned metal plate from the water bath pool and start the fan to form a wind field to achieve rapid drying of the metal plate.

2. The welding process of the metal plate according to claim 1, characterized in that, In step S3, when clamping the primary product into the water bath pool, the metal plate is immersed below the water surface, and the immersion depth range is 5 - 10 mm.

3. The welding process of the metal plate according to claim 1, characterized in that, In step S5, the hanging power-on method is used for drying. The tools used in the hanging power-on method include two chucks. The two chucks are respectively electrically connected to the positive and negative poles of a weak current. The chucks are suspended in the wind field environment, and the two chucks respectively clamp both ends of the metal plate.

4. An apparatus used in the welding process of a metal plate, for processing the welding process of the metal plate according to any one of claims 1-3, characterized in that, It includes: A frame, which has a load-bearing platform; A welding robot, which is arranged at one end of the load-bearing platform, and the welding gun head is arranged on the robotic arm of the welding robot; A water bath pool, which is arranged at the other end of the load-bearing platform. The water bath pool contains water at a predetermined water level. A clamping station is arranged in the water bath pool and is immersed below the water surface. Water outlets and drain ports are respectively opened on the side wall and the bottom wall of the water bath pool, and a water pump is arranged on the load-bearing platform and is respectively connected to the water outlet and the drain port through pipelines; An outer insulation protection assembly, which includes a fixed sleeve, a lifting sleeve and a lifting drive. Both the fixed sleeve and the lifting sleeve are made of insulating materials. The fixed sleeve is sleeved outside the water bath pool and the welding robot. The lifting sleeve is sleeved outside the fixed sleeve. The lifting sleeve moves up and down relative to the fixed sleeve in the vertical direction. The lifting drive is installed on the frame in the vertical direction, and the drive shaft of the lifting drive is hinged to the outer side wall of the lifting sleeve; A fan, which is arranged beside the frame; A blowing assembly, which includes a fixing plate, an outer cylinder and an inner cylinder. The outer cylinder is coaxially sleeved outside the inner cylinder. The welding gun head is installed in the inner cylinder. One ends of the outer cylinder and the inner cylinder are both connected to the fixing plate. The fixing plate is installed on the robotic arm. The space between the outer cylinder and the inner cylinder is connected to an air supply device, and the space between the inner cylinder and the welding gun head is connected to an argon supply device.

5. The device used in the welding process of the metal plate according to claim 4, characterized in that, An insulating pad is arranged between the bottom of the water bath pool and the load-bearing platform.

6. The device used in the welding process of the metal plate according to claim 4, characterized in that, The fixed sleeve and the lifting sleeve are both provided with an isolation plate, and the isolation plates of the fixed sleeve and the lifting sleeve are both arranged between the water bath and the welding robot.

7. The device used in the welding process of the metal plate according to claim 4, characterized in that, It also includes an outer cover, which is sleeved on the outside of the robot arm on which the welding gun head is installed, and one end of the outer cover is sleeved on the outside of the fixing plate and connected to the fixing plate.

8. The device used in the welding process of the metal plate according to claim 7, characterized in that, It also includes a flexible cover, which is an accordion cover structure. One end of the flexible cover is connected to the end of the outer cover away from the fixed plate, and the other end of the flexible cover extends toward the other mechanical arms of the welding robot.

9. The device used in the welding process of the metal plate according to claim 4, characterized in that, One end of the inner cylinder facing away from the fixing plate extends to the outside of the outer cylinder, and one end of the inner cylinder extending to the outside of the outer cylinder is bent outward to form an outward turning edge.

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