Intelligent welding device for stainless steel pipe and using method of intelligent welding device

Abstract

The invention discloses an intelligent welding device for a stainless steel pipe and a using method of the intelligent welding device, and belongs to the technical field of welding. The intelligent welding device comprises a supporting mechanism, a bearing clamping mechanism is installed on the upper surface of the supporting mechanism, a driving mechanism is installed on the surface of the bearing clamping mechanism, and a welding mechanism is installed on the surface of the driving mechanism; the welding mechanism comprises an arc-shaped plate, and mounting boxes are fixedly connected to the two edges of one side of the arc-shaped plate; through cooperative use of all the devices, when the welding gun assembly is used for welding a preheated closed opening, the preheating plate moves synchronously to preheat a subsequent stainless steel pipe to be welded, so that the efficiency of external welding of the stainless steel pipe is improved, heat preservation is conducted on the preheated closed opening through the arrangement of the electric heating plate, and the welding quality of the stainless steel pipe is improved. And the temperature at the closed opening is always kept within a certain range, so that when the welding gun assembly is used for external welding, the temperature difference stress at the closed opening is reduced, and the contraction deformation of the stainless steel pipe is inhibited.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and in particular to an intelligent welding device for stainless steel pipes and a using method thereof. Background Technique

[0002] Stainless steel pipes are hollow long round steel materials, mainly widely used in industrial pipelines such as petroleum, chemical industry, medical treatment, food, light industry, and mechanical instruments, as well as mechanical structure components, etc. In addition, when the bending and torsional strength are the same, the weight is lighter, so it is also widely used in manufacturing mechanical parts and engineering structures. It is also commonly used as furniture and kitchenware, etc.

[0003] Welding, also known as fusion welding, is a manufacturing process and technology for joining metals or other thermoplastic materials such as plastics by means of heating, high temperature or high pressure. There are many energy sources for modern welding, including gas flames, electric arcs, lasers, electron beams, friction, and ultrasonic waves, etc. In addition to being used in factories, welding can also be carried out in various environments, such as in the wild, underwater, and in space. No matter where it is, welding may pose risks to operators.

[0004] After investigation, a Chinese invention patent discloses a cylinder intelligent welding device (publication number: CN108857120B), including a workbench. Both sides of the top of the workbench are fixedly connected with boxes, and the top of the inner wall of the box is fixedly connected with a motor. One end of the output shaft of the motor is fixedly connected with a movable rod, and the bottom end of the movable rod is rotatably connected with the bottom of the inner wall of the box. One side of the box is movably connected with a hydraulic cylinder, and one side of the hydraulic cylinder extending into the box is fixedly connected with a fixed rod. The present invention relates to the technical field of welding devices. This cylinder intelligent welding device, through the movable connection of a hydraulic cylinder on one side of the box and a mechanized welding method, can use a rotating method for welding during welding to avoid harm to the operating personnel. Through the connection between the output end of the laser ranging sensor and the input end of the central processor, welding is carried out in an intelligent way, improving the welding efficiency, and the welding quality is also greatly improved.

[0005] Although the above patent sets up structures such as hydraulic cylinders and fixed rods, one end of the output shaft of the hydraulic cylinder is fixedly connected to a fixed rod, one end of the fixed rod penetrates through the fixed frame and extends into the interior of the fixed frame, the top of the workbench is fixedly connected to a welding machine, and in the mechanized welding method, when welding, the rotation method can be used for welding, avoiding harm to the operating personnel, greatly improving the safety factor, and using the intelligent method for welding, improving the welding efficiency. However, during the welding process of stainless steel pipes, due to the poor high thermal conductivity and large thermal expansion coefficient of stainless steel pipes, the heat is concentrated and the welding stress is too large during the welding process of stainless steel pipes, resulting in easy burn-through, deformation and cracking of stainless steel pipes during welding, reducing the welding effect of stainless steel pipes or making it impossible to complete welding, and affecting the production of stainless steel pipes.

[0006] Therefore, the present invention provides an intelligent welding device for stainless steel pipes and its use method to solve the above problems. Summary of the Invention

[0007] (1) Technical problems to be solved

[0008] The present invention provides an intelligent welding device for stainless steel pipes and its use method, aiming to solve the problems raised in the background technology.

[0009] (2) Technical solutions

[0010] To achieve the above object, the present invention provides the following technical solutions: An intelligent welding device for stainless steel pipes includes a support mechanism, a bearing and clamping mechanism is installed on the upper surface of the support mechanism, a driving mechanism is installed on the surface of the bearing and clamping mechanism, and a welding mechanism is installed on the surface of the driving mechanism;

[0011] The welding mechanism includes an arc-shaped plate, mounting boxes are fixedly connected to both edges on one side of the arc-shaped plate, an electric heating plate and a preheating plate corresponding to the existing stainless steel pipe are respectively fixedly connected inside the mounting boxes, a cavity is opened inside the arc-shaped plate, a drain pipe communicating with the cavity is fixedly connected to one side of the cavity, a heat dissipation fan fixedly connected to the mounting box is fixedly connected to the surface of the drain pipe, a spray head corresponding to the heat dissipation fan is fixedly connected to one end of the drain pipe, and a cooling mechanism is installed inside the arc-shaped plate.

[0012] As a preferred technical solution of the present application, the welding mechanism further includes a sliding block installed on the surface of the driving mechanism, a mounting plate is fixedly connected to the surface of the sliding block, welding gun assemblies are fixedly connected to both sides of the upper surface of the mounting plate, a fixing plate fixedly connected to the arc-shaped plate is fixedly connected to one side of the welding gun assembly, and a water collecting box is fixedly connected to the surface of the fixing plate.

[0013] As a preferred technical solution of the present application, the welding mechanism further includes a water pump fixedly connected to the upper surface of the fixing plate and having an input end communicating with the water collecting box. The output end of the water pump is fixedly connected to a delivery pipe communicating with the cavity. Guide wheels corresponding to the existing stainless steel pipe raw materials are installed at the four corners of the lower surface of the arc-shaped plate.

[0014] As a preferred technical solution of the present application, the cooling mechanism includes a sealing plate rotatably connected to the arc-shaped plate through a torsion spring and corresponding to the cavity. A rotating disk is rotatably connected to the inside of the arc-shaped plate through a rotating shaft. A sponge wipe corresponding to the sealing plate is fixedly connected to the surface of the rotating disk in an annular array. A rotating groove corresponding to the rotating disk and communicating with the cavity is formed in the lower surface of the arc-shaped plate. The sponge wipe corresponds to the weld seam after welding with the welding torch assembly.

[0015] As a preferred technical solution of the present application, the support mechanism includes a support frame and moving wheels installed at the four corners of the lower surface of the support frame. Support blocks are fixedly connected to both sides of the upper surface of the support frame. A limit disk is fixedly connected to one side of one of the support blocks. A first welding pad roller corresponding to the existing stainless steel pipe raw material is fixedly connected to the surface of the limit disk. Electric push rods are fixedly connected to both sides of the surface of the limit disk.

[0016] As a preferred technical solution of the present application, the support mechanism further includes clamping rods fixedly connected to the output ends of a plurality of electric push rods respectively. A second welding pad roller corresponding to the joint of the existing stainless steel pipe raw material and having coolant inside is fixedly connected to the opposite sides of the two clamping rods. A bearing plate is fixedly connected to one side of the support frame. A controller electrically connected to the electrical components of the intelligent welding device for the stainless steel pipe is fixedly connected to the surface of the bearing plate.

[0017] As a preferred technical solution of the present application, the support mechanism further includes a placement plate fixedly connected to the lower surface of the support frame and corresponding to the moving wheels. A detection arm electrically connected to the controller is installed on the upper surface of the placement plate. A welding assembly is fixedly connected to the output end of the detection arm. A pressing plate is fixedly connected to the surface of the welding assembly. Sliding wheels are installed on the surface of the pressing plate in a rectangular array.

[0018] As a preferred technical solution of the present application, the bearing and clamping mechanism includes support rods fixedly connected to the middle of the upper surface of the support frame in a rectangular array. A guide plate is slidably connected to the upper surface of the support rods. A threaded rod is threadedly connected to the inside of the guide plate. Every two adjacent threaded rods are connected by a belt drive. One ends of two of the threaded rods are fixedly connected to drive motors fixedly connected to the support rods. A clamping plate is fixedly connected to one side of the guide plate. A gasket is fixedly connected to the inner arc surface of the clamping plate.

[0019] As a preferred technical solution of the present application, the driving mechanism includes a guiding box fixedly connected to the upper surfaces of two of the support rods and slidably connected to the guiding plate. A lead screw threadedly connected to the sliding block is rotatably connected inside the guiding box through a bearing seat, and one end of the lead screw is fixedly connected to a servo motor fixedly connected to the guiding box.

[0020] A usage method of an intelligent welding device for stainless steel pipes, which is applied to the above-mentioned intelligent welding device for stainless steel pipes, includes the following specific steps:

[0021] S1: Based on the steel pipe precision forming equipment, the joints of the stainless steel pipe are fitted, and the stainless steel pipe is moved between several clamping plates. By the mutual cooperation of the driving motor and the clamping plates, while clamping the stainless steel pipe and keeping the joints fitted, based on the controller, two welding torch assemblies are respectively fitted to one side and the middle of the joint, and through the electric push rod, the second welding pad roller is driven to move directly below the joint;

[0022] S2: Based on the controller, start the two welding torch assemblies and the driving mechanism to drive the welding torch assemblies to move, and simultaneously weld one side and the middle of the joint, realizing the segmented welding of the stainless steel pipe. The fixing plate drives the arc-shaped plate to move, so that the electric heating plate and the preheating plate heated by the electric heater move synchronously. The electric heating plate heats both sides of the joint, and the preheating plate preheats the subsequent joints to be welded;

[0023] S3: While welding the stainless steel pipe, the rotating disk and the sponge wipe are fitted to the stainless steel pipe. Based on the frictional force, the rotating disk rotates, so that the sponge wipe pushes the sealing plate to rotate, and the water inside the cavity is absorbed by the sponge wipe, and the water is squeezed to the weld by the rotation of the sponge wipe to cool the weld. At the same time, through the second welding pad roller, the weld is cooled synchronously;

[0024] S4: Based on the cooling fan and the atomizing nozzle, cool the weld after water cooling, so that the welding torch assemblies continuously carry out segmented welding of the stainless steel pipe to complete the external welding of the stainless steel pipe. Driven by an external rotating device, the stainless steel pipe rotates so that the joint faces down and fits with the first welding pad roller. According to the controller, the probe arm drives the welding assembly to carry out internal welding on the stainless steel pipe, and the welding assembly is guided by the pressing plate and the sliding wheel to complete the welding of the stainless steel pipe.

[0025] (III) Beneficial effects

[0026] Based on the mutual cooperation of structures such as the driving mechanism and the welding mechanism, during the welding of the stainless steel pipe by the welding torch assembly, the preheating plate of the electric heater preheats both sides of the joint of the stainless steel pipe. When the welding torch assembly welds the preheated joint, the preheating plate moves synchronously to preheat the subsequent stainless steel pipe to be welded, thereby improving the efficiency of external welding of the stainless steel pipe. And through the setting of the electric heating plate, the preheated joint is kept warm, so that the temperature of the joint always remains within a certain range. Thus, when the welding torch assembly performs external welding, the temperature difference stress at the joint is reduced, thereby suppressing the shrinkage deformation of the stainless steel pipe;

[0027] Based on the mutual cooperation of structures such as the cooling mechanism and the welding mechanism, when the welding torch assembly performs external welding on the stainless steel pipe, the rotating disk and the sponge scrub rotate by rubbing on the surface of the stainless steel pipe, so that the sponge scrub pushes the sealing plate to move, and the water inside the cavity is absorbed by the sponge scrub. Based on the rotation of the sponge scrub, the water is squeezed to the weld to cool the weld. At the same time, based on the setting of the water pump, the water inside the cavity is sprayed out through the drain pipe and the atomizing nozzle, and the cooling fan is started to blow on the weld after spraying, so as to accelerate the evaporation of the water squeezed by the sponge scrub and the atomized water, quickly take out the heat, thereby further improving the cooling efficiency of the weld, reducing the high-temperature residence time of the weld, suppressing the expansion caused by uneven temperature, avoiding the thermal expansion of the stainless steel pipe after welding, and thus reducing the welding stress;

[0028] Based on the mutual cooperation of multiple welding torch assemblies and welding components, the welding of the stainless steel pipe is completed, realizing the integration of internal welding, external welding and cooling of the stainless steel pipe, which not only improves the welding efficiency of the stainless steel pipe, but also avoids the movement of the stainless steel pipe during the welding process, making the welding of the stainless steel pipe more convenient;

[0029] Through the mutual cooperation of the controller, the electric heating plate and the cooling mechanism, the intelligent welding device for the stainless steel pipe realizes the integration of segmented welding, segmented heating and cooling during the welding process, as well as the intelligent welding of the stainless steel pipe. This not only avoids manual welding of the stainless steel pipe, but also enables the integration to reduce the welding stress of the stainless steel pipe, making the stainless steel pipe more stable during welding. Description of the Drawings

[0030] Figure 1 It is a schematic structural diagram of an intelligent welding device for a stainless steel pipe and its usage method;

[0031] Figure 2 It is a schematic structural diagram of an intelligent welding device for a stainless steel pipe and its usage method from a second perspective;

[0032] Figure 3 It is a schematic structural diagram of an intelligent welding device for a stainless steel pipe and its usage method from a third perspective;

[0033] Figure 4 It is a schematic structural diagram of a support mechanism in an intelligent welding device for a stainless steel pipe and its usage method;

[0034] Figure 5 It is a schematic structural diagram of a welding mechanism in an intelligent welding device for a stainless steel pipe and its usage method;

[0035] Figure 6 It is a schematic structural diagram of an arc plate, a cavity and an installation box in an intelligent welding device for a stainless steel pipe and its usage method;

[0036] Figure 7 It is a schematic structural diagram of a driving mechanism and a welding torch assembly in an intelligent welding device for a stainless steel pipe and its usage method;

[0037] Figure 8 It is a schematic structural diagram of a bearing and clamping mechanism in an intelligent welding device for a stainless steel pipe and its usage method;

[0038] Figure 9 It is a schematic structural diagram of a support frame and a probe arm in an intelligent welding device for a stainless steel pipe and its usage method.

[0039] In the figure:

[0040] 1. Support mechanism; 101. Support frame; 102. Support block; 103. Limit disc; 104. First welding pad roller; 105. Electric push rod; 106. Clamping rod; 107. Bearing plate; 108. Controller; 109. Second welding pad roller; 110. Probe arm; 111. Welding assembly; 112. Tightening plate; 113. Placing plate;

[0041] 2. Bearing and clamping mechanism; 201. Support rod; 202. Guide plate; 203. Threaded rod; 204. Driving motor; 205. Clamping plate;

[0042] 3. Driving mechanism; 301. Guide box; 302. Lead screw; 303. Servo motor;

[0043] 4. Welding mechanism; 401. Sliding block; 402. Installation plate; 403. Welding torch assembly; 404. Fixed plate; 405. Water collecting box; 406. Guide wheel; 407. Arc plate; 408. Installation box; 409. Electric heating plate; 410. Preheating plate; 411. Cavity; 412. Drain pipe; 413. Cooling fan; 414. Water pump; 415. Delivery pipe;

[0044] 5. Cooling mechanism; 501. Sealing plate; 502. Rotating disc; 503. Sponge wiper. Specific implementation method

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] The present invention provides an intelligent welding device for stainless steel pipes and its usage method. Referring to Figures 1-9 as shown, three embodiments are provided:

[0047] Embodiment 1:

[0048] The intelligent welding device for stainless steel pipes includes a support mechanism 1. A load-bearing clamping mechanism 2 is installed on the upper surface of the support mechanism 1. A driving mechanism 3 is installed on the surface of the load-bearing clamping mechanism 2. A welding mechanism 4 is installed on the surface of the driving mechanism 3;

[0049] The welding mechanism 4 includes an arc plate 407. Installation boxes 408 are fixedly connected to both edges on one side of the arc plate 407. An electric heating plate 409 corresponding to the existing stainless steel pipe and a preheating plate 410 are respectively fixedly connected inside the installation boxes 408. A cooling mechanism 5 is installed inside the arc plate 407;

[0050] Among them, the electric heating plate 409 is used to maintain the temperature at the joint of the stainless steel pipe to avoid too large a temperature difference between the welding part of the stainless steel pipe due to too low a temperature;

[0051] Among them, the preheating plate 410 heats the joint of the stainless steel pipe based on an electric heater;

[0052] The welding mechanism 4 further includes a sliding block 401 installed on the surface of the driving mechanism 3. An installation plate 402 is fixedly connected to the surface of the sliding block 401. Welding torch assemblies 403 are fixedly connected to both sides of the upper surface of the installation plate 402. A fixing plate 404 fixedly connected to the arc plate 407 is fixedly connected to one side of the welding torch assembly 403. A water collecting box 405 is fixedly connected to the surface of the fixing plate 404;

[0053] Among them, the mutual cooperation of the installation plate 402 and the sliding block 401 is used to drive the two welding torch assemblies 403 to move synchronously, so that the welding torch assemblies 403 can simultaneously perform two-stage welding on the surface of the stainless steel pipe, thereby improving the efficiency of external welding of the stainless steel pipe;

[0054] Specifically, the stainless steel pipe is clamped inside the bearing and clamping mechanism 2, so that the output end of the welding torch assembly 403 fits the joint. At the same time, the electric heating plate 409 and the preheating plate 410 are started to heat the vicinity of the joint of the stainless steel pipe, and the welding torch assembly 403 is used to weld the joint. Driven by the driving mechanism 3, the two welding torch assemblies 403 are moved, and at the same time, the arc-shaped plate 407 drives the mounting box 408 to move, so that the electric heating plate 409 moves to the position of the preheating plate 410, and the preheating plate 410 moves to the place to be welded on the stainless steel pipe, so that the preheating plate 410 preheats the joint of the stainless steel pipe, and the electric heating plate 409 keeps the preheated joint warm. Thus, when the welding torch assembly 403 performs external welding, the temperature difference stress at the joint is reduced, thereby suppressing the shrinkage deformation of the stainless steel pipe.

[0055] Embodiment 2. Based on the embodiment, further, a cavity 411 is formed inside the arc-shaped plate 407. One side of the cavity 411 is fixedly connected with a drain pipe 412 communicating with the cavity 411. The surface of the drain pipe 412 is fixedly connected with a cooling fan 413 fixedly connected with the mounting box 408. One end of the drain pipe 412 is fixedly connected with an atomizing nozzle corresponding to the cooling fan 413;

[0056] Among them, the drain pipe 412 is used to drain the water inside the cavity 411 into the atomizing nozzle and spray it on the weld of the welded stainless steel pipe;

[0057] Among them, the cooling fan 413 is used to accelerate the evaporation of the water at the weld and improve the cooling efficiency;

[0058] Among them, the cavity 411 is used to store cooling water;

[0059] The welding mechanism 4 further includes a water pump 414 fixedly connected to the upper surface of the fixing plate 404 and with its input end communicating with the water collecting box 405. The output end of the water pump 414 is fixedly connected with a delivery pipe 415 communicating with the cavity 411. Guide wheels 406 corresponding to the existing stainless steel pipe raw materials are installed at the four corners of the lower surface of the arc-shaped plate 407;

[0060] Among them, the water collecting box 405 is used to store and add cooling water;

[0061] Among them, the water pump 414 and the delivery pipe 415 are used to deliver cooling water;

[0062] Among them, the guide wheels 406 are used to guide the arc-shaped plate 407 to make the arc-shaped plate 407 move more stably;

[0063] Specifically, the water pump 414 is started, and the cooling water enters the cavity 411 through the delivery pipe 415;

[0064] The cooling mechanism 5 includes a sealing plate 501 rotatably connected to the arc-shaped plate 407 through a torsion spring and corresponding to the cavity 411. Inside the arc-shaped plate 407, a rotating disk 502 is rotatably connected through a rotating shaft. The surface of the rotating disk 502 is fixedly connected with sponge wipes 503 arranged in an annular array corresponding to the sealing plate 501. A rotating groove corresponding to the rotating disk 502 and communicating with the cavity 411 is formed on the lower surface of the arc-shaped plate 407. The sponge wipes 503 correspond to the weld seams after welding with the welding torch assembly 403;

[0065] Among them, the sealing plate 501 seals the connection between the rotating groove and the cavity 411 to prevent the water inside the cavity 411 from freely discharging;

[0066] Among them, the sponge wipes 503 are used to absorb the cooling water inside the cavity 411;

[0067] Among them, the rotating disk 502 is used to drive the sponge wipes 503 to rotate;

[0068] Specifically, when the welding torch assembly 403 performs external welding on the stainless steel pipe, the rotating disk 502 and the sponge wipes 503 rotate based on friction, causing the sponge wipes 503 to push the sealing plate 501 to open, so that the cooling water in the cavity 411 is absorbed by the sponge wipes 503. Then, due to the rotation of the sponge wipes 503, the cooling water on the sponge wipes 503 is squeezed to the weld seam to cool the weld seam;

[0069] The support mechanism 1 includes a support frame 101 and moving wheels installed at the four corners of the lower surface of the support frame 101. On both sides of the upper surface of the support frame 101, support blocks 102 are fixedly connected. On one side of one of the support blocks 102, a limit disk 103 is fixedly connected. On the surface of the limit disk 103, a first welding pad roller 104 corresponding to the existing stainless steel pipe raw material is fixedly connected. On both sides of the surface of the limit disk 103, electric push rods 105 are fixedly connected;

[0070] Among them, the limit disk 103 is used to limit the stainless steel pipe;

[0071] Among them, the first welding pad roller 104 is used to support the stainless steel pipe during internal welding;

[0072] The support mechanism 1 further includes clamping rods 106 fixedly connected to the output ends of several electric push rods 105 respectively. On the opposite sides of the two clamping rods 106, a second welding pad roller 109 corresponding to the joint of the existing stainless steel pipe raw material and filled with coolant inside is fixedly connected. On one side of the support frame 101, a bearing plate 107 is fixedly connected. On the surface of the bearing plate 107, a controller 108 electrically connected to the electrical components of the intelligent welding device for this stainless steel pipe is fixedly connected;

[0073] Among them, the electric push rod 105 and the clamping rod 106 are used to drive the second welding pad roller 109 to fit under the joint of the stainless steel pipe, and support the joint during the welding of the stainless steel pipe;

[0074] Among them, the second welding pad roller 109 can not only be used to support the stainless steel pipe, but also cool the joint through the cooling water arranged inside it;

[0075] Among them, the controller 108 is used to control the electrical components in the intelligent welding device of the stainless steel pipe;

[0076] Specifically, after the stainless steel pipe moves to the bearing and clamping mechanism 2 and is clamped, the electric push rod 105 is started, and its output end drives the clamping rod 106 to move, so that the second welding pad roller 109 fits under the joint and supports it. At the same time, it is cooled when the welding torch assembly 403 performs external welding on the stainless steel pipe.

[0077] Embodiment 3, based on Embodiment 1 and Embodiment 2, further, the support mechanism 1 further includes a placement plate 113 fixedly connected to the lower surface of the support frame 101 and corresponding to the moving wheels. The upper surface of the placement plate 113 is provided with a probe arm 110 electrically connected to the controller 108. The output end of the probe arm 110 is fixedly connected to a welding assembly 111. The surface of the welding assembly 111 is fixedly connected with a pressing plate 112, and sliding wheels are arranged on the surface of the pressing plate 112 in a rectangular array;

[0078] Among them, the probe arm 110 is used to drive the welding assembly 111 to move;

[0079] Among them, the welding assembly 111 is used to perform internal welding on the stainless steel pipe;

[0080] Among them, the pressing plate 112 and the sliding wheels are used to guide the welding assembly 111;

[0081] Specifically, after the external welding of the stainless steel pipe is completed, the probe arm 110 is started through the controller 108 to insert the welding assembly 111 into the stainless steel pipe, and the welding assembly 111 is started to weld the inner side of the stainless steel pipe, so as to complete the internal welding of the stainless steel pipe. During the internal welding process of the welding assembly 111, it is guided based on the pressing plate 112 and the sliding wheels, so that the welding assembly 111 is more stable when moving;

[0082] The bearing and clamping mechanism 2 includes support rods 201 fixedly connected to the middle of the upper surface of the support frame 101 in a rectangular array. A guide plate 202 is slidably connected to the upper surface of the support rods 201. A threaded rod 203 is threadedly connected inside the guide plate 202. Every two adjacent threaded rods 203 are connected by belt drive. One ends of two of the threaded rods 203 are fixedly connected to a drive motor 204 fixedly connected to the support rods 201. A clamping plate 205 is fixedly connected to one side of the guide plate 202. A gasket is fixedly connected to the inner arc surface of the clamping plate 205;

[0083] Among them, the guide plate 202 is used to guide the clamping plate 205;

[0084] Among them, move the stainless steel pipe to the opposite side of the clamping plate 205, start the drive motor 204, drive two corresponding threaded rods 203 to rotate through the belt, so that the threaded rods 203 drive the clamping plate 205 to move, so that the clamping plate 205 drives the gasket to clamp the stainless steel pipe, so that the stainless steel pipe is more stable during welding;

[0085] The drive mechanism 3 includes a guide box 301 fixedly connected to the upper surfaces of two of the support rods 201 and slidably connected to the guide plate 202. A lead screw 302 threadedly connected to the sliding block 401 is rotatably connected inside the guide box 301 through a bearing seat. One end of the lead screw 302 is fixedly connected to a servo motor 303 fixedly connected to the guide box 301;

[0086] After the welding torch assembly 403 welds the joint of the stainless steel pipe, start the servo motor 303 at the same time, so that its output end drives the lead screw 302 to rotate, so that the lead screw 302 drives the sliding block 401 to slide inside the guide box 301, so that the two welding torch assemblies 403 move at the joint to complete the external welding of the stainless steel pipe.

[0087] A usage method of an intelligent welding device for stainless steel pipes, which is applied to the above-mentioned intelligent welding device for stainless steel pipes, includes the following specific steps:

[0088] S1: Based on the steel pipe precision forming equipment, make the joints of the stainless steel pipes fit, and move the stainless steel pipe between several clamping plates 205. While clamping the stainless steel pipe and keeping the joints fit by the mutual cooperation of the drive motor 204 and the clamping plate 205, based on the controller 108, control the two welding torch assemblies 403 to be respectively attached to one side and the middle of the joint, and drive the second welding pad roller 109 to move directly below the joint through the electric push rod 105;

[0089] S2: Based on the controller 108, start two torch assemblies 403 and drive the drive mechanism 3 to drive the torch assemblies 403 to move, and simultaneously weld one side and the middle of the joint, realizing segmented welding of the stainless steel pipe. And the fixing plate 404 drives the arc-shaped plate 407 to move, so that the electric heating plate 409 and the preheating plate 410 heated by the electric heater move synchronously. The electric heating plate 409 heats both sides of the joint, and the preheating plate 410 preheats the subsequent joint to be welded;

[0090] S3: While welding the stainless steel pipe, the rotating disk 502 and the sponge wiper 503 are in contact with the stainless steel pipe. Based on the frictional force, the rotating disk 502 rotates, so that the sponge wiper 503 pushes the sealing plate 501 to rotate, and the water inside the cavity 411 is absorbed by the sponge wiper 503, and the water is squeezed to the weld by the rotation of the sponge wiper 503 to cool the weld. At the same time, through the second welding pad roller 109, the weld is cooled synchronously;

[0091] S4: Based on the heat dissipation fan 413 and the atomizing nozzle, cool the weld after water cooling, so that the torch assembly 403 continuously performs segmented welding on the stainless steel pipe to complete the external welding of the stainless steel pipe. Based on an external rotating device, drive the stainless steel pipe to rotate so that the joint faces down and fits with the first welding pad roller 104. According to the control of the controller 108, drive the probe arm 110 to drive the welding assembly 111 to perform internal welding on the stainless steel pipe, and guide the welding assembly 111 through the pressing plate 112 and the sliding wheel to complete the welding of the stainless steel pipe.

[0092] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An intelligent welding device for stainless steel pipes, characterized in that: It includes a support mechanism (1), on the upper surface of the support mechanism (1), a bearing and clamping mechanism (2) is installed, on the surface of the bearing and clamping mechanism (2), a driving mechanism (3) is installed, and on the surface of the driving mechanism (3), a welding mechanism (4) is installed; The welding mechanism (4) includes an arc-shaped plate (407), at both edges on one side of the arc-shaped plate (407), mounting boxes (408) are fixedly connected respectively. Inside the mounting boxes (408), an electric heating plate (409) corresponding to the existing stainless steel pipe and a preheating plate (410) are fixedly connected respectively. Inside the arc-shaped plate (407), a cavity (411) is formed. On one side of the cavity (411), a drain pipe (412) communicating with the cavity (411) is fixedly connected. On the surface of the drain pipe (412), a heat dissipation fan (413) fixedly connected with the mounting box (408) is fixedly connected. One end of the drain pipe (412) is fixedly connected with an atomizing nozzle corresponding to the heat dissipation fan (413). Inside the arc-shaped plate (407), a cooling mechanism (5) is installed.

2. The intelligent welding device for a stainless steel pipe according to claim 1, wherein: The welding mechanism (4) further includes a sliding block (401) installed on the surface of the driving mechanism (3). On the surface of the sliding block (401), a mounting plate (402) is fixedly connected. On both sides of the upper surface of the mounting plate (402), welding torch assemblies (403) are fixedly connected. On one side of the welding torch assemblies (403), a fixing plate (404) fixedly connected with the arc-shaped plate (407) is fixedly connected. On the surface of the fixing plate (404), a water collecting box (405) is fixedly connected.

3. The intelligent welding device for a stainless steel pipe according to claim 2, characterized in that: The welding mechanism (4) further includes a water pump (414) fixedly connected to the upper surface of the fixing plate (404) and with its input end communicating with the water collecting box (405). The output end of the water pump (414) is fixedly connected with a delivery pipe (415) communicating with the cavity (411). At the four corners of the lower surface of the arc-shaped plate (407), guide wheels (406) corresponding to the existing stainless steel pipe raw materials are installed.

4. An intelligent welding device for a stainless steel pipe according to claim 1, characterized in that: The cooling mechanism (5) includes a sealing plate (501) rotatably connected to the arc-shaped plate (407) through a torsion spring and corresponding to the cavity (411). Inside the arc-shaped plate (407), a rotating disk (502) is rotatably connected through a rotating shaft. On the surface of the rotating disk (502), sponge wipes (503) corresponding to the sealing plate (501) are fixedly connected in an annular array. On the lower surface of the arc-shaped plate (407), a rotating groove corresponding to the rotating disk (502) and communicating with the cavity (411) is formed. The sponge wipes (503) correspond to the weld seams after welding of the welding torch assemblies (403).

5. The intelligent welding device for a stainless steel pipe according to claim 2, wherein: The support mechanism (1) includes a support frame (101) and moving wheels installed at the four corners of the lower surface of the support frame (101). On both sides of the upper surface of the support frame (101), support blocks (102) are fixedly connected. On one side of one of the support blocks (102), a limit disc (103) is fixedly connected. On the surface of the limit disc (103), a first welding pad roller (104) corresponding to the existing stainless steel pipe raw material is fixedly connected. On both sides of the surface of the limit disc (103), electric push rods (105) are fixedly connected.

6. The intelligent welding device for a stainless steel pipe according to claim 5, wherein: The support mechanism (1) further includes clamping rods (106) respectively fixedly connected to the output ends of a plurality of electric push rods (105). On the opposite sides of the two clamping rods (106), a second welding pad roller (109) corresponding to the joint of the existing stainless steel pipe raw material and provided with coolant inside is fixedly connected. On one side of the support frame (101), a bearing plate (107) is fixedly connected. On the surface of the bearing plate (107), a controller (108) electrically connected to the electrical components of the intelligent welding device for this stainless steel pipe is fixedly connected.

7. The intelligent welding device for a stainless steel pipe according to claim 6, characterized in that: The support mechanism (1) further includes a placement plate (113) fixedly connected to the lower surface of the support frame (101) and corresponding to the moving wheels. On the upper surface of the placement plate (113), a detection arm (110) electrically connected to the controller (108) is installed. At the output end of the detection arm (110), a welding assembly (111) is fixedly connected. On the surface of the welding assembly (111), a pressing plate (112) is fixedly connected. On the surface of the pressing plate (112), sliding wheels are installed in a rectangular array.

8. An intelligent welding device for stainless steel pipes according to claim 5, characterized in that: The carrying and clamping mechanism (2) includes support rods (201) fixedly connected in a rectangular array to the middle of the upper surface of the support frame (101). On the upper surface of the support rods (201), a guide plate (202) is slidably connected. Inside the guide plate (202), a threaded rod (203) is threadedly connected. Every two adjacent threaded rods (203) are connected by a belt drive. At one end of two of the threaded rods (203), drive motors (204) fixedly connected to the support rods (201) are fixedly connected. On one side of the guide plate (202), a clamping plate (205) is fixedly connected. On the inner arc surface of the clamping plate (205), a gasket is fixedly connected.

9. The intelligent welding device for a stainless steel pipe according to claim 8, characterized in that: The drive mechanism (3) includes a guide box (301) fixedly connected to the upper surfaces of two of the support rods (201) and slidably connected to the guide plate (202). Inside the guide box (301), a lead screw (302) threadedly connected to a sliding block (401) is rotatably connected through a bearing seat. At one end of the lead screw (302), a servo motor (303) fixedly connected to the guide box (301) is fixedly connected.

10. A method of using an intelligent welding device for stainless steel pipes, which is applied to the intelligent welding device for stainless steel pipes described in claims 1-9, characterized in that: Including the following specific steps: S1: Based on the precision forming equipment for steel pipes, the joints of the stainless steel pipes are made to fit together, and the stainless steel pipes are moved between several clamping plates (205). While clamping the stainless steel pipes and keeping the joints fitting together by the mutual cooperation of the driving motor (204) and the clamping plates (205), based on the controller (108), two welding torch assemblies (403) are respectively made to fit on one side and the middle of the joint, and through the electric push rod (105), the second welding pad roller (109) is driven to move directly below the joint. S2: Based on the controller (108), two welding torch assemblies (403) are started and the driving mechanism (3) drives the welding torch assemblies (403) to move, welding the one side and the middle of the joint simultaneously, realizing the segmented welding of the stainless steel pipes. And the fixed plate (404) drives the arc-shaped plate (407) to move, making the electric heating plate (409) and the preheating plate (410) heated by the electric heater move synchronously. The electric heating plate (409) heats both sides of the joint, and the preheating plate (410) preheats the subsequent joint to be welded. S3: While welding the stainless steel pipes, the rotating disk (502) and the sponge wiper (503) are in contact with the stainless steel pipes. Based on the frictional force, the rotating disk (502) rotates, making the sponge wiper (503) push the sealing plate (501) to rotate, so that the water inside the cavity (411) is absorbed by the sponge wiper (503), and the water is squeezed to the weld by the rotation of the sponge wiper (503) to cool the weld. At the same time, through the second welding pad roller (109), the weld is cooled synchronously. S4: Based on the cooling fan (413) and the atomizing nozzle, the weld after water cooling is cooled, enabling the welding torch assemblies (403) to continuously carry out segmented welding of the stainless steel pipes to complete the external welding of the stainless steel pipes. Driven by an external rotating device, the stainless steel pipes are rotated so that the joint faces down and fits with the first welding pad roller (104). According to the controller (108), the probing arm (110) drives the welding assembly (111) to carry out internal welding on the stainless steel pipes, and the welding assembly (111) is guided by the pressing plate (112) and the sliding wheels to complete the welding of the stainless steel pipes.

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