A laser welding apparatus for stainless steel pipes and a method thereof

Abstract

The application discloses a kind of stainless steel pipe laser welding equipment and method thereof, belong to laser welding technical field, the present application can drive clamping assembly rotation by switching feeding assembly, make the switching position between clamping assembly, so that the switching position between stainless steel pipe, to meet the continuous feeding operation of stainless steel pipe, while switching feeding assembly also drive transmission assembly rotation, so that transmission assembly can drive vacuum gripping assembly rotation, by rotating the position of vacuum chuck, stainless steel pipe baffle is corresponding with stainless steel pipe, and electric push rod cooperates vacuum chuck, can complete the gripping of stainless steel pipe baffle, and realize the butt joint with stainless steel pipe, to facilitate contact type welding operation, to realize the operation of automatic continuous feeding in this way, to improve welding efficiency, and by automatic pop-up assembly, after stainless steel pipe baffle is taken out, automatic replenishment filling material vacancy is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser welding, in particular to a stainless steel pipe laser welding device and method thereof. BACKGROUND

[0002] The original stainless steel pipe material is open at both ends, which requires us to perform precise welding operation on one end before packaging. The working principle of the laser welding device is based on laser welding technology. By focusing the laser beam through the focusing mirror to a small spot, an extremely high energy density is generated, which is sufficient to rapidly melt the welded material in a small area. Then, the molten metal solidifies during the cooling process to form a firm welded joint.

[0003] However, the current mainstream processing method still relies on manual operation, that is, the open stainless steel pipe is taken out one by one and placed on the designated welding device for initial welding. This highly dependent process not only has a low degree of automation, which significantly restricts the processing efficiency of the stainless steel pipe, but also easily causes thermal stress deformation during the welding process due to the high temperature environment required, which may even lead to changes in the metal organizational structure of the heat-affected zone and degradation of overall performance. More seriously, after the welding is completed, the product temperature is still high, and if manual material taking is performed at this time, the operator is at risk of being scalded.

[0004] To solve the above problems, the present application provides a stainless steel pipe laser welding device and method thereof. SUMMARY

[0005] The purpose of the present application is to solve the problems existing in the prior art and provide a stainless steel pipe laser welding device and method thereof.

[0006] To achieve the above purpose, the present application adopts the following technical solutions:

[0007] A stainless steel pipe laser welding device includes a welding auxiliary feeding mechanism, which includes an auxiliary frame, and a laser welding device is fixedly installed on the auxiliary frame.

[0008] The auxiliary frame is provided with a switching feeding assembly and a cooling assembly, the cooling assembly is combined with the switching feeding assembly, the switching feeding assembly is connected with a transmission assembly, and the transmission assembly is provided with a vacuum grabbing assembly.

[0009] The side surface of the auxiliary frame is provided with an automatic material ejecting assembly and a driving assembly, the vacuum grabbing assembly is located between the automatic material ejecting assembly and the switching feeding assembly, the switching feeding assembly is provided with four material clamping assemblies, and the driving assembly is in transmission connection with the material clamping assemblies.

[0010] Preferably, the vacuum grabbing assembly comprises a fixed plate, an electric push rod and a vacuum device are fixedly installed on two opposite sides of the fixed plate, four hoses are communicated with the vacuum device, one end of each hose is communicated with a vacuum chuck, and the vacuum chuck is rotatably installed on the fixed plate through a bearing.

[0011] Preferably, the transmission assembly comprises a transmission shaft and a second belt transmission structure, the transmission shaft is rotatably installed on the auxiliary frame through a bearing, one end of the transmission shaft is fixedly connected with a fixed disc, and one side of the fixed disc is fixedly connected with the electric push rod.

[0012] Preferably, the switching feeding assembly comprises a first motor, the first motor is fixedly installed on the auxiliary frame, a first rotating shaft is fixedly connected with an output shaft of the first motor, the first rotating shaft is rotatably installed on the auxiliary frame through a bearing, the first rotating shaft is in transmission connection with the transmission shaft through the second belt transmission structure, one end of the first rotating shaft is fixedly connected with a disc, one side of the disc is fixedly connected with four three-wing plates, the four three-wing plates separate the four material clamping assemblies, the same meshing tube is fixedly connected between the four three-wing plates, the meshing tube is fixedly connected to the middle of the disc, and four groups of meshing holes are arranged on the meshing tube.

[0013] Preferably, the driving assembly comprises three second rotating shafts, the second rotating shafts are rotatably installed on the auxiliary frame through bearings, first gears are fixedly connected to one ends of the second rotating shafts, and the three second rotating shafts are in transmission connection through two first belt transmission structures, one of the second rotating shafts is fixedly connected with an output shaft of a second motor, and the second motor is fixedly installed on the auxiliary frame.

[0014] Preferably, the material clamping assembly comprises a three-jaw chuck, the three-jaw chuck is rotatably installed on the disc through a bearing, a stainless steel pipe is clamped on the three-jaw chuck, a third rotating shaft is fixedly connected to one side of the three-jaw chuck, a second gear is fixedly connected to one end of the third rotating shaft, and the second gear is in meshing connection with the first gear.

[0015] Preferably, the cooling assembly comprises a cooling device and a shielding frame, the cooling assembly is installed on the auxiliary frame, one end of the cooling assembly is communicated with a fan, one end of the fan is communicated with a cold conveying pipe, two jet pipes are communicated with two ends of the cold conveying pipe through the shielding frame, the jet pipes are located in the meshing tube, side blocks are arranged on two sides of the two jet pipes, the side blocks are arranged on the inner wall of the meshing tube, the side blocks are fixedly connected to the side wall of the shielding frame, the shielding frame is arranged between the two three-wing plates arranged in the transverse direction, and the shielding frame is in lapping connection with the disc and the meshing tube.

[0016] Preferably, the automatic material ejecting assembly comprises a discharging cylinder, a limiting ring is arranged at a discharging opening of the discharging cylinder, and the discharging cylinder is used for storing stainless steel pipe pieces.

[0017] Preferably, the other end of the discharge cylinder is provided with an end cover, a spring is fixedly connected to the end cover, the front end of the spring is fixedly connected with a elastic plate, the elastic plate is arranged behind the stainless steel pipe baffle, both sides of the discharge cylinder are provided with a pin hole, and a bolt structure is arranged in the pin hole.

[0018] A method for using a stainless steel pipe laser welding device, comprising the following steps:

[0019] S1, when welding and sealing the stainless steel pipe, the stainless steel pipe is clamped and fixed by the three-jaw chuck, the fixed plate is moved by the retraction of the electric push rod, the vacuum chuck is moved by the fixed plate, the vacuum chuck enters the discharge cylinder and contacts the stainless steel pipe baffle, the vacuum chuck is vacuumized by the vacuum equipment, the vacuum chuck adsorbs the stainless steel pipe baffle, then the electric push rod is elongated, the vacuum chuck and the vacuum baffle are taken out of the discharge cylinder by the fixed plate, after taking out, the elastic force of the spring can push the elastic plate forward, the stainless steel pipe baffle is filled forward to the vacuum baffle, and the position is limited by the limiting ring;

[0020] S2, after clamping the stainless steel pipe and the stainless steel pipe baffle, the first rotating shaft is driven to rotate by the first motor, the first rotating shaft drives the disc and the second belt transmission structure to rotate, the disc drives the material clamping assembly to rotate and change position, the stainless steel pipe is located at the position of the laser welding and sealing device, when the second belt transmission structure rotates, the second belt transmission structure drives the transmission shaft to rotate, the transmission shaft drives the vacuum grabbing assembly to rotate through the fixed disc, at this time, the stainless steel pipe baffle and the stainless steel pipe correspond, then the electric push rod is retracted, the stainless steel pipe baffle contacts the stainless steel pipe, at the same time, the other side vacuum chuck contacts the stainless steel pipe baffle again and adsorbs it;

[0021] S3, after the stainless steel pipe baffle contacts the stainless steel pipe, the gap between the stainless steel pipe baffle and the stainless steel pipe is welded and sealed by the laser welding and sealing device, at the same time, the second rotating shaft is driven to rotate by the second motor, the second rotating shaft drives the first belt transmission structure to rotate, then the first gear and the second gear are driven to rotate, the second gear drives the three-jaw chuck to rotate, the three-jaw chuck drives the stainless steel pipe to rotate, the laser welding and sealing device performs circumferential welding and sealing operation, at the same time, the remaining two three-jaw chucks rotate, the welded stainless steel pipe and the stainless steel pipe which has not been welded are cooled;

[0022] S4, after the stainless steel pipe is welded and sealed, the vacuum chuck is removed by the vacuum equipment, the stainless steel pipe baffle is adsorbed, at the same time, the electric push rod drives the vacuum chuck to take out the stainless steel pipe baffle again through the fixed plate, the material clamping assembly is rotated again by switching the feeding assembly, then a new round of welding and sealing operation is performed.

[0023] Compared with the prior art, the present application provides a stainless steel pipe laser welding device and method, which has the following advantages:

[0024] 1、The stainless steel pipe laser welding equipment and its method, the switching feeding assembly can drive the clamping assembly to rotate, the clamping assembly can switch the position between each other, so that the stainless steel pipe can switch the position between each other, so as to meet the continuous feeding operation of the stainless steel pipe, and the switching feeding assembly can also drive the transmission assembly to rotate, so that the transmission assembly can drive the vacuum grabbing assembly to rotate, the position of the vacuum suction cup is switched through rotation, so that the stainless steel pipe baffle corresponds to the stainless steel pipe, and the electric push rod cooperates with the vacuum suction cup, so that the stainless steel pipe baffle can be grabbed, and the butt joint with the stainless steel pipe can be realized, so as to facilitate the contact type welding operation, so that the automatic continuous feeding operation can be realized in this way, so as to improve the welding efficiency, and the automatic feeding assembly can realize automatic feeding to fill the vacancy after the stainless steel pipe baffle is taken out.

[0025] 2、The stainless steel pipe laser welding equipment and its method, the switching feeding assembly can switch the position of the clamping assembly, then the second motor drives the second rotating shaft to rotate, so that the second rotating shaft drives the two first belt transmission structures to rotate, the first belt transmission structure can drive a plurality of second rotating shafts to rotate, so that the second rotating shaft drives the first gear and the second gear to drive, the second gear drives the three-jaw chuck to rotate, so that the three-jaw chuck rotates the stainless steel pipe, at the same time, the cooling equipment cools, and the fan transports the cold air, so that the cold air is sprayed out through the air jet pipe, so that the upper and lower stainless steel pipes can be cooled, at the same time, due to the rotation of the stainless steel pipe, the uniformity of cooling is improved, the pre-cooling method can reduce the heat affected zone in the welding process, reduce the change of metal organization and the performance of the heat affected zone, and keep the original performance of the stainless steel pipe, and the pre-cooling can reduce the initial temperature of the stainless steel pipe during welding, which is helpful for controlling the welding deformation, can reduce the thermal stress caused by high temperature welding, and reduce the deformation degree of the stainless steel pipe after welding.

[0026] 3、The stainless steel pipe laser welding equipment and its method, the switching feeding assembly can drive the clamping assembly and the transmission assembly to rotate, the transmission assembly drives the vacuum grabbing assembly to rotate, so that the vacuum grabbing assembly can switch the feeding, and the clamping assembly drives the stainless steel pipe to rotate, so that it can realize continuous operation with the vacuum grabbing assembly, at the same time, when the stainless steel pipe is welded, the driving assembly can drive the clamping assembly to rotate, so that the stainless steel pipe can rotate to complete a week of welding operation, and at the same time, the rapid cooling treatment of the stainless steel pipe can be met, this method can realize automatic production process, so that the whole operation is simple and convenient, and the cost is low, and the cooled stainless steel pipe can prevent the problem of scalding when taking out. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a perspective view of a stainless steel pipe laser welding equipment and its method proposed by the application;

[0028] Figure 2 A perspective view of a laser welding device for stainless steel pipes and a method thereof with a feeding mechanism for welding and sealing;

[0029] Figure 3 A perspective view of a laser welding device for stainless steel pipes and a method thereof with a rear view of an auxiliary frame;

[0030] Figure 4 A structural view of a laser welding device for stainless steel pipes and a method thereof with a structure view of a connection between an automatic feeding assembly and an auxiliary frame;

[0031] Figure 5 A perspective view of a laser welding device for stainless steel pipes and a method thereof with a sectional view of a switching feeding assembly;

[0032] Figure 6 A structural view of a laser welding device for stainless steel pipes and a method thereof with a structure view of a connection between a vacuum gripping assembly and a transmission assembly;

[0033] Figure 7 A structural view of a laser welding device for stainless steel pipes and a method thereof with a structure view of a connection between a driving assembly and a clamping assembly;

[0034] Figure 8 A perspective view of a laser welding device for stainless steel pipes and a method thereof with a disc;

[0035] Figure 9 A perspective view of a laser welding device for stainless steel pipes and a method thereof with a cooling assembly;

[0036] Figure 10 A perspective view of a laser welding device for stainless steel pipes and a method thereof with a sectional view of an automatic feeding assembly;

[0037] Figure 11 An enlarged view of A in the laser welding device for stainless steel pipes and the method thereof; Figure 10

[0038] ​In the figure: 100, welding auxiliary feeding mechanism; 101, auxiliary frame; 102, cooling assembly; 1021, cooling device; 1022, fan; 1023, cold pipe; 1024, shielding frame; 1025, air pipe; 1026, side stop; 103, automatic spring feeding assembly; 1031, feeding cylinder; 1032, spring; 1033, end cover; 1034, spring plate; 1035, limiting ring; 1036, bolt structure; 1037, pin hole; 104, vacuum grabbing assembly; 1041, vacuum device; 1042, fixed plate; 1043, hose; 1044, vacuum chuck; 1045, electric push rod; 105, switching feeding assembly; 1051, disc; 1052, first motor; 1053, first rotating shaft; 1054, three-wing plate; 1055, meshing cylinder; 106, driving assembly; 1061, second motor; 1062, second rotating shaft; 1063, first belt transmission structure; 1064, first gear; 107, clamping assembly; 1071, third rotating shaft; 1072, second gear; 1073, three-jaw chuck; 108, transmission assembly; 1081, second belt transmission structure; 1082, transmission shaft; 1083, fixed disc; 200, laser welding device. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0040] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0041] Embodiment 1: Reference Figures 1-8 and Figures 10-1 A stainless steel pipe laser welding device, comprising a welding auxiliary feeding mechanism 100, the welding auxiliary feeding mechanism 100 comprising an auxiliary frame 101, and a laser welding device 200 is fixedly installed on the auxiliary frame 101.

[0042] The auxiliary frame 101 is provided with a switching feeding assembly 105 and a cooling assembly 102. The switching feeding assembly 105 comprises a first motor 1052 fixedly installed on the auxiliary frame 101. The output shaft of the first motor 1052 is fixedly connected with a first rotating shaft 1053. The first rotating shaft 1053 is driven to rotate by the first motor 1052, so that the first rotating shaft 1053 drives a disc 1051 to rotate, and the disc 1051 drives the clamping assemblies 107 to rotate, so that the positions between the clamping assemblies 107 are switched, and continuous feeding operation can be realized. The first rotating shaft 1053 is rotatably installed on the auxiliary frame 101 through a bearing, and the first rotating shaft 1053 is in transmission connection with a transmission shaft 1082 through a second belt transmission structure 1081. The power can be transmitted at a long distance through the second belt transmission structure 1081, so that the transmission shaft 1082 can be driven to rotate. One end of the first rotating shaft 1053 is fixedly connected with the disc 1051. Four three-wing plates 1054 are fixedly connected to one side of the disc 1051. The three-wing plates 1054 block the clamping assemblies 107, so that the upper and lower clamping assembly arrangement areas can be ensured to be sealed by the three-wing plates 1054, the disc 1051 and the shielding frame 1024, so that the cold air can be prevented from leaking, and the cooling effect of the stainless steel pipe is better. The four three-wing plates 1054 separate the four clamping assemblies 107, and the same mesh tube 1055 is fixedly connected between the four three-wing plates 1054. The mesh tube 1055 is fixedly connected to the middle part of the disc 1051. The mesh tube 1055 is provided with four groups of mesh holes. The four groups of mesh holes on the mesh tube 1055 correspond to the four clamping assemblies 107 respectively, so that the cold air discharged from the air jet pipe 1025 can smoothly pass through the mesh holes to cool the stainless steel pipe. The cooling assembly 102 is combined with the switching feeding assembly 105. The switching feeding assembly 105 is connected with a transmission assembly 108. The transmission assembly 108 comprises the transmission shaft 1082 and the second belt transmission structure 1081. The transmission shaft 1082 is rotatably installed on the auxiliary frame 101 through a bearing. The transmission shaft 1082 can be stably rotated through the bearing, so as to stably drive the fixed plate 1042 to rotate. One end of the transmission shaft 1082 is fixedly connected with a fixed disc 1083. One side of the fixed disc 1083 is fixedly connected with the electric push rod 1045. The front and back movements of the fixed plate 1042 and the vacuum suction cup 1044 can be controlled through the electric push rod 1045. The vacuum suction cup 1044 can smoothly contact the stainless steel pipe baffle. Meanwhile, the vacuum suction cup 1044 can drive the stainless steel pipe baffle to be smoothly connected with the stainless steel pipe. The transmission assembly 108 is provided with a vacuum grabbing assembly 104. The vacuum grabbing assembly 104 comprises the fixed plate 1042. The electric push rod 1045 and the vacuum device 1041 are fixedly installed on the two sides of the fixed plate 1042. The vacuum suction cup 1044 can be vacuumized, so that the vacuum suction cup 1044 can be adsorbed on the stainless steel pipe baffle through the internal and external pressure difference, thereby facilitating the taking out of the stainless steel pipe baffle. Four hoses 1043 are communicated with the vacuum device 1041.The hose 1043 can be active, so that the vacuum chuck 1044 can smoothly turn, and after the vacuum chuck 1044 is removed, the elastic recovery of the hose 1043 can smoothly complete the turning reset. One end of the hose 1043 is in communication with the vacuum chuck 1044, and the vacuum chuck 1044 is rotatably installed on the fixed plate 1042 through a bearing.

[0043] The side of the auxiliary frame 101 is provided with an automatic material ejection assembly 103 and a driving assembly 106. The automatic material ejection assembly 103 includes a material ejection cylinder 1031, and a limiting ring 1035 is arranged at the material ejection opening of the material ejection cylinder 1031. The limiting ring 1035 can limit the stainless steel pipe baffle, so as to avoid the stainless steel pipe baffle being pushed out by the spring 1032. Meanwhile, the limiting ring 1035 is deformable, so that the limiting ring 1035 can be deformed by the vacuum chuck 1044 when the stainless steel pipe baffle is taken out, thereby successfully completing the material taking work of the stainless steel pipe baffle. The material ejection cylinder 1031 is used for storing the stainless steel pipe baffle. The other end of the material ejection cylinder 1031 is provided with an end cover 1033, and the spring 1032 is fixedly connected to the end cover 1033. The elastic force of the spring 1032 can drive the elastic plate 1034 to move, so that the elastic plate 1034 can apply force to the stainless steel pipe baffle, thereby successfully filling the material taking vacancy. The front end of the spring 1032 is fixedly connected to the elastic plate 1034, and the elastic plate 1034 is arranged behind the stainless steel pipe baffle. The material ejection cylinder 1031 is provided with a pin hole 1037 on both sides, and a latch structure 1036 is arranged in the pin hole 1037. The latch structure 1036 can limit the end cover 1033, so as to keep the stable connection between the end cover 1033 and the material ejection cylinder 1031. Meanwhile, the end cover 1033 can be removed, so as to facilitate the addition of the stainless steel pipe baffle into the material ejection cylinder 1031. The latch structure 1036 is arranged on the end cover 1033. The vacuum grabbing assembly 104 is located between the automatic material ejection assembly 103 and the switching material feeding assembly 105. The switching material feeding assembly 105 is provided with four material clamping assemblies 107, and the driving assembly 106 is in transmission connection with the material clamping assemblies 107.

[0044] In the embodiment: the first motor 1052 drives the first rotating shaft 1053 and the disc 1051 to rotate, so that the disc 1051 drives the material clamping assembly 107 to rotate, the material clamping assembly 107 switches positions between each other, so that the stainless steel pipes switch positions between each other, so as to meet the continuous feeding operation of the stainless steel pipes, and the first rotating shaft 1053 also drives the second belt transmission structure 1081 to rotate, the second belt transmission structure 1081 drives the vacuum material grabbing assembly 104 to rotate through the transmission shaft 1082, the position of the vacuum suction cup 1044 is switched through rotation, so that the stainless steel pipe baffle corresponds to the stainless steel pipe, and the electric push rod 1045 cooperates with the vacuum suction cup 1044, so as to complete the grabbing of the stainless steel pipe baffle and realize the butt joint with the stainless steel pipe, so as to facilitate the contact type welding and sealing operation, so as to realize the automatic continuous feeding operation in this way, so as to improve the welding and sealing efficiency, and after the stainless steel pipe baffle is taken out, the elastic force of the spring 1032 can drive the elastic plate 1034 to move, so that the elastic plate 1034 drives the stainless steel pipe baffle to move, so as to realize automatic material replenishment to fill the material vacancy.

[0045] Embodiment 2: refer to Figures 7-9 A stainless steel pipe laser welding device, comprising a driving assembly 106, the driving assembly 106 comprising three second rotating shafts 1062, the second rotating shafts 1062 being rotatably installed on the auxiliary frame 101 through bearings, one end of the second rotating shafts 1062 being fixedly connected with first gears 1064, and the three second rotating shafts 1062 being transmissionally connected through two first belt transmission structures 1063, so that the three second rotating shafts 1062 can be linked to move synchronously, and one of the second rotating shafts 1062 is fixedly connected with an output shaft of a second motor 1061, and the second motor 1061 is fixedly installed on the auxiliary frame 101.

[0046] The material clamping assembly 107 comprises a three-jaw chuck 1073, which can clamp and fix the stainless steel pipe, so as to avoid the stainless steel pipe from falling off and affecting the welding and sealing. The three-jaw chuck 1073 is rotatably installed on the disc 1051 through a bearing, the three-jaw chuck 1073 clamps the stainless steel pipe, one side of the three-jaw chuck 1073 is fixedly connected with a third rotating shaft 1071, one end of the third rotating shaft 1071 is fixedly connected with a second gear 1072, the second gear 1072 is engaged with the first gear 1064, the second gear 1072 is driven by the third rotating shaft 1071 to rotate through the transmission of the first gear 1064 and the second gear 1072, so that the stainless steel pipe and the stainless steel pipe baffle rotate to realize the circumferential welding and sealing operation of the stainless steel pipe and the stainless steel pipe baffle;

[0047] The cooling assembly 102 comprises a cooling device 1021 and a shielding frame 1024, the cooling assembly 102 is installed on the auxiliary frame 101, one end of the cooling assembly 102 is communicated with a fan 1022, one end of the fan 1022 is communicated with a cold air conveying pipe 1023, two ends of the cold air conveying pipe 1023 pass through the shielding frame 1024 and are communicated with two air injection pipes 1025 respectively, cold air can be generated by the cooling device 1021, and the cold air is delivered by the fan 1022 and discharged through the air injection pipes 1025, so that the stainless steel pipe can be quickly cooled and cooled, the air injection pipes 1025 are located in the mesh cylinder 1055, side shields 1026 are arranged on the two sides of the two air injection pipes 1025, the side shields 1026 are arranged on the inner wall of the mesh cylinder 1055, the side shields 1026 can shield the mesh holes on the left and right sides, so that the cold air is prevented from leaking from the left and right sides, the side shields 1026 are fixedly connected to the side walls of the shielding frame 1024, the shielding frame 1024 is arranged between the two transversely arranged three-wing plates 1054, and the shielding frame 1024 is overlapped with the disc 1051 and the mesh cylinder 1055.

[0048] In the embodiment, the position of the material clamping assembly 107 is adjusted by switching the feeding assembly, then the second shaft 1062 is driven to rotate by the second motor 1061, the second shaft 1062 drives the two first belt transmission structures 1063 to rotate, the first belt transmission structure 1063 drives a plurality of second shafts 1062 to rotate, the second shaft 1062 drives the first gear 1064 and the second gear 1072 to transmit, the second gear 1072 drives the three-jaw chuck 1073 to rotate, the three-jaw chuck 1073 rotates the stainless steel pipe, at the same time, the cooling device 1021 cools and the fan 1022 delivers cold air, the cold air is sprayed out through the air injection pipes 1025, and the upper and lower stainless steel pipes can be cooled, at the same time, the stainless steel pipe rotates, the uniformity of cooling is improved, the pre-cooling mode can reduce the heat affected zone in the welding and sealing process, reduce the change of metal organization and the performance drop of the heat affected zone, and the original performance of the stainless steel pipe is maintained, in addition, the pre-cooling can reduce the initial temperature of the stainless steel pipe during welding, which is helpful for controlling the welding deformation, can reduce the thermal stress caused by high temperature welding, and reduces the deformation degree of the stainless steel pipe after welding.

[0049] Embodiment 3: refer to Figures 2-5 A stainless steel pipe laser welding device, comprising an auxiliary frame 101, a switching feeding assembly 105 and a cooling assembly 102 are arranged on the auxiliary frame 101, the cooling assembly 102 is combined with the switching feeding assembly 105, a transmission assembly 108 is connected to the switching feeding assembly 105, and a vacuum material grabbing assembly 104 is arranged on the transmission assembly 108.

[0050] The side of the auxiliary frame 101 is provided with an automatic material ejection assembly 103 and a driving assembly 106, and the vacuum grabbing assembly 104 is located between the automatic material ejection assembly 103 and the switching feeding assembly 105, the switching feeding assembly 105 is provided with four material clamping assemblies 107, and the driving assembly 106 is in transmission connection with the material clamping assemblies 107;

[0051] In the embodiment: the switching feeding assembly 105 can drive the material clamping assemblies 107 and the transmission assembly 108 to rotate, the transmission assembly 108 drives the vacuum grabbing assembly 104 to rotate, so that the vacuum grabbing assembly 104 performs switching feeding, and the material clamping assemblies 107 drive the stainless steel pipe to rotate, so that the stainless steel pipe cooperates with the vacuum grabbing assembly 104 to realize continuous operation, and when the stainless steel pipe is welded and sealed, the driving assembly 106 drives the material clamping assemblies 107 to rotate, so that the stainless steel pipe rotates to perform one-week welding and sealing operation, and the rapid cooling treatment of the stainless steel pipe is satisfied, the automatic production process is realized, the whole operation is simple and convenient, the cost is low, and the cooled stainless steel pipe can prevent the problem of scalding when taking the material.

[0052] A use method of a stainless steel pipe laser welding device, comprising the following steps:

[0053] S1, when welding and sealing the stainless steel pipe, the three-jaw chuck 1073 clamps and fixes the stainless steel pipe, the electric push rod 1045 is retracted to drive the fixed plate 1042 to move, the fixed plate 1042 drives the vacuum suction cup 1044 to move, the vacuum suction cup 1044 enters the discharge cylinder 1031 and contacts the stainless steel pipe baffle, the vacuum device 1041 performs vacuum treatment on the vacuum suction cup 1044, the vacuum suction cup 1044 adsorbs the stainless steel pipe baffle, then the electric push rod 1045 is elongated, the fixed plate 1042 drives the vacuum suction cup 1044 and the vacuum baffle to move out of the discharge cylinder 1031, after taking out, the elastic force of the spring 1032 can push the elastic plate 1034 forward, so that the stainless steel pipe baffle is forwardly filled with the empty baffle, and the limiting ring 1035 is limited;

[0054] S2, after clamping the stainless steel pipe and the stainless steel pipe baffle, the first motor 1052 drives the first rotating shaft 1053 to rotate, the first rotating shaft 1053 drives the disc 1051 and the second belt transmission structure 1081 to rotate, the disc 1051 drives the material clamping assembly 107 to rotate and change position, so that the stainless steel pipe is located at the position of the laser welding and sealing device 200, when the second belt transmission structure 1081 rotates, the second belt transmission structure 1081 drives the transmission shaft 1082 to rotate, the transmission shaft 1082 drives the vacuum grabbing assembly 104 to rotate through the fixed disc 1083, at this time, the stainless steel pipe baffle corresponds to the stainless steel pipe, then the electric push rod 1045 is retracted, the stainless steel pipe baffle contacts the stainless steel pipe, at the same time, the other side vacuum suction cup 1044 contacts the stainless steel pipe baffle again and performs adsorption;

[0055] S3, after the stainless steel pipe baffle contacts with the stainless steel pipe, the gap between the stainless steel pipe baffle and the stainless steel pipe is welded and sealed by the laser welding and sealing device 200, at the same time, the second motor 1061 drives the second rotating shaft 1062 to rotate, the second rotating shaft 1062 drives the first belt transmission structure 1063 to rotate, and then the first gear 1064 and the second gear 1072 are driven to rotate, the second gear 1072 drives the three-jaw chuck 1073 to rotate, the three-jaw chuck 1073 drives the stainless steel pipe to rotate, the laser welding and sealing device 200 performs circumferential welding and sealing operation, at the same time, the remaining two three-jaw chucks 1073 rotate, the welded stainless steel pipe and the stainless steel pipe which has not been welded are cooled;

[0056] S4, after the stainless steel pipe is welded and sealed, the vacuum chuck 1044 is removed from the stainless steel pipe baffle by the vacuum equipment 1041, at the same time, the electric push rod 1045 drives the vacuum chuck 1044 to take out the stainless steel pipe baffle again through the fixed plate 1042, and then the new round of welding and sealing operation is carried out by rotating and exchanging the position of the clamping assembly 107 driven by the switching feeding assembly 105.

[0057] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A laser welding device for stainless steel pipes, comprising a welding seal auxiliary feeding mechanism, characterized in that, The welding and sealing auxiliary feeding mechanism includes an auxiliary frame, on which a laser welding and sealing device is fixedly installed; The auxiliary frame is equipped with a switching feed assembly and a cooling assembly. The cooling assembly is combined with the switching feed assembly. The switching feed assembly is connected to a transmission assembly, and the transmission assembly is equipped with a vacuum gripping assembly. The auxiliary frame is equipped with an automatic feeding assembly and a drive assembly on its side. The vacuum gripping assembly is located between the automatic feeding assembly and the switching feeding assembly. The switching feeding assembly is equipped with four clamping assemblies. The drive assembly and the clamping assemblies are connected by a transmission. The switching feeding assembly includes a first motor, which is fixedly mounted on an auxiliary frame. The output shaft of the first motor is fixedly connected to a first rotating shaft, which is rotatably mounted on the auxiliary frame via bearings. One end of the first rotating shaft is fixedly connected to a disc, and one side of the disc is fixedly connected to four three-winged plates. The four three-winged plates separate the four clamping assemblies, and the same screen is fixedly connected between the four three-winged plates. The screen is fixedly connected to the middle of the disc and has four sets of mesh holes. The cooling assembly includes a cooling device and a shielding frame. The cooling assembly is mounted on an auxiliary frame. One end of the cooling assembly is connected to a fan, and one end of the fan is connected to a cooling pipe. Both ends of the cooling pipe pass through the shielding frame and are connected to two jet pipes respectively. The jet pipes are located in the mesh cylinder. Side baffles are provided on both sides of the two jet pipes. The side baffles are erected on the inner wall of the mesh cylinder and are fixedly connected to the side wall of the shielding frame. The shielding frame is set between two horizontally arranged three-wing plates and overlaps with the disc and the mesh cylinder. The automatic feeding assembly includes a feeding cylinder, the feeding port of which is equipped with a limit ring, and the inside of the feeding cylinder is used to store stainless steel tube baffles. The other end of the discharge cylinder is equipped with an end cap, and a spring is fixedly connected to the end cap. The front end of the spring is fixedly connected to the spring plate. The spring plate is located behind the stainless steel tube baffle. Both sides of the discharge cylinder are provided with pin holes, and the pin holes are provided with a pin structure. The pin structure is located on the end cap.

2. A stainless steel pipe laser welding device according to claim 1, characterized in that, The vacuum gripping assembly includes a fixed plate, on which electric push rods and vacuum equipment are fixedly installed respectively. Four hoses are connected to the vacuum equipment, with one end of each hose connected to a vacuum suction cup. The vacuum suction cup is mounted on the fixed plate by means of bearings.

3. A stainless steel pipe laser welding device according to claim 2, characterized in that, The transmission assembly includes a transmission shaft and a second belt drive structure. The transmission shaft is rotatably mounted on an auxiliary frame via bearings. One end of the transmission shaft is fixedly connected to a fixed disc, and one side of the fixed disc is fixedly connected to an electric push rod. The first rotating shaft is connected to the transmission shaft via the second belt drive structure.

4. A stainless steel pipe laser welding device according to claim 3, characterized in that, The drive assembly includes three second rotating shafts, which are rotatably mounted on an auxiliary frame via bearings. One end of each second rotating shaft is fixedly connected to a first gear, and the three second rotating shafts are connected to each other via two first belt drive structures. One of the second rotating shafts is fixedly connected to the output shaft of a second motor, which is fixedly mounted on the auxiliary frame.

5. A stainless steel pipe laser welding device according to claim 4, characterized in that, The clamping assembly includes a three-jaw chuck, which is rotatably mounted on a disc via bearings. The three-jaw chuck holds a stainless steel tube. A third rotating shaft is fixedly connected to one side of the three-jaw chuck, and a second gear is fixedly connected to one end of the third rotating shaft. The second gear meshes with the first gear.

6. A method of using a stainless steel pipe laser welding equipment according to claim 5, characterized in that, Includes the following steps: S1. When welding and sealing stainless steel pipes, the stainless steel pipes are clamped and fixed by a three-jaw chuck. The electric push rod retracts and drives the fixed plate to move, which in turn drives the vacuum suction cup to move. The vacuum suction cup enters the discharge cylinder and contacts the stainless steel pipe baffle. The vacuum suction cup is then vacuumed by a vacuum device to allow it to adhere to the stainless steel pipe baffle. The electric push rod then extends, causing the fixed plate to pull the vacuum suction cup and vacuum baffle out of the discharge cylinder. After removal, the elastic force of the spring can push the spring plate forward, allowing the stainless steel pipe baffle to fill the gap and be limited by the limit ring. S2. After the stainless steel tube and stainless steel tube baffle are clamped, the first motor drives the first rotating shaft to rotate. The first rotating shaft drives the disc and the second belt drive structure to rotate, so that the disc drives the clamping assembly to rotate and change its position, so that the stainless steel tube is located at the laser welding and sealing device position. When the second belt drive structure rotates, it drives the drive shaft to rotate, so that the drive shaft drives the vacuum gripping assembly to rotate through the fixed disc. At this time, the stainless steel tube baffle and the stainless steel tube are aligned. Then, the electric push rod retracts, so that the stainless steel tube baffle contacts the stainless steel tube. At the same time, the vacuum suction cup on the other side contacts the stainless steel tube baffle again and performs adsorption. S3. After the stainless steel tube baffle comes into contact with the stainless steel tube, the gap between the stainless steel tube baffle and the stainless steel tube is welded and sealed by the laser welding and sealing device. At the same time, the second motor drives the second rotating shaft to rotate, and the second rotating shaft drives the first belt drive structure to rotate, which in turn drives the first gear and the second gear to drive the three-jaw chuck to rotate. The three-jaw chuck drives the stainless steel tube to rotate, so that the laser welding and sealing device can perform circumferential welding and sealing. At the same time, the other two three-jaw chucks rotate to cool the welded stainless steel tube and the stainless steel tube that has not yet been welded. S4. After the stainless steel pipe is welded and sealed, the vacuum suction cup is removed from the stainless steel pipe baffle by the vacuum equipment. At the same time, the electric push rod drives the vacuum suction cup to take out the stainless steel pipe baffle again through the fixed plate. Then, the feeding assembly is switched to drive the clamping assembly to rotate and exchange positions again, and then a new round of welding and sealing operation is carried out.

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